HYBRID PUMP

Abstract

 Hybrid pump (HP) comprising a pump body (101) including a first cylindrical portion (101a), a second cylindrical portion (101d), and a common passage (101f). An oil reservoir (103) is arranged at one of the sides of the pump body (101) to hold the oil. A motor (105) is mounted on the other side of pump body (101) to incorporate the rotary motion to an eccentric cam (155) for pumping the oil during the electrical operation of the pump. A piston (109) is connected to a shaft holder (139) to incorporate reciprocating motion for the pumping of the oil during manual operation. The first cylindrical portion (101a) is configured to accommodate the piston (109). The common passage (101f) is configured for the passage of the pressurized oil pumped either by a manual or electrical operation of the hybrid pump (HP) into a chamber (101h).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a device for controlled tilting of a driver's cabin of a vehicle or any part of a vehicle using hydraulic cylinders. More particularly, the present disclosure relates to a hybrid pump that can be used for manual and electrical operation means for the controlled tilting of the driver's cabin of the vehicle or any part of the vehicle using hydraulic cylinders.

BACKGROUND

[0002] In the field of commercial or industrial transport or of specialty vehicles, it is known in the art to use vehicles whose driver's cabin is placed over the engine compartment and is mounted so that it can be tilted. Normally, the driver's cabin is titled in a forward direction around a horizontal axis or pivot that is parallel to the front axle. The titling facilitates easy and fast access to the engine or other vehicle parts during maintenance operations with the vehicle stationary. In modern-day commercial trucks, cabins are opened and closed to access the engine parts, which are under the cabin for periodic servicing or overhauling whenever required.

[0003] The driver cabins are loaded with several aggregates to provide comfort to the driver and co-driver. Aggregates are like Audio system, Air conditioning system, Blower system etc., which are adding additional weight to the cabin. The loaded cabin weight would range from 800 kg to 1500 kg and is not limited to. Thus, loaded cabins need a hydraulic system known as the cabin tilt system (CTS) to open and close the cabin. CTS consist of cylinder, pump and latch.

[0004] At present, the controlled tilting of the driver's cabin is performed by means of one or two or more hydraulic cylinders. By and large, the cylinders are usually pivoted by one end to a side point at the bottom of the driver's cabin. The other end is pivoted to the vehicle frame in order to cause the cabin to tilt to a predetermined limit angle of elevation, which corresponds to the maximum allowed tilting. The cylinders may be manually operated, or they may be operated by means of an appropriate electric motor with PMDC technology or BLDC technology or any other similar technology.

[0005] A manual actuating pump is used to deliver pressurized oil. Whenever we are actuating the pump, 30kg (approx.) load is required to operate the pump, and the same is to be applied manually. The number of strokes required to tilt the complete cabin will vary depending on the cabin tilt cylinder design, and the number of strokes ranges between 110 and 300 and is not limited to.

[0006] The manual cabin tilt arrangement is not user friendly due to the associated problem of fatigue and tiredness of the driver / co-driver for opening and or closing the cabin. To overcome the above, an electrically driven cabin tilt arrangement is preferred which may include the use of electric or electro-hydraulic systems.

[0007] Though the electrically driven cabin tilt arrangement is satisfactory, but it is having own demerit of non-operatable when there is a power interruption due to various reasons. It will be advantageous to provide a driver cabin tilt arrangement comprising a 'Hybrid cabin tilt pump' which can be operated both by manual and electrical means.

[0008] Therefore, there is a need for technology that overcomes these drawbacks, is more compact, sleek in design to accommodate existing arrangement, requires less maintenance, and provides improved cabin tilt system.

SUMMARY

[0009] In one aspect of the present disclosure, a hybrid pump comprises a pump body that includes a first cylindrical portion, a second cylindrical portion, and a common passage. An oil reservoir that is arranged at one of the sides of the pump body, a motor that is mounted on the other side of pump body at the second cylindrical portion to incorporate the rotary motion to an eccentric cam to provide to and pro motion to a piston of a pump element; a piston that is connected to a shaft holder to incorporate reciprocating motion; wherein the first cylindrical portion is configured to accommodate the piston; wherein the common passage is configured for the passage of the pressurized oil pumped either by a manual or electrical operation of the hybrid pump into a chamber; and wherein a common direction control valve is fitted to the chamber.

[0010] In some aspect of the present disclosure, the oil reservoir is constructed using transparent material such as nylon, poly carbonate, acrylic and not limited to.

[0011] In some aspect of the present disclosure, the upper end of the piston is pivotally connected to the first end of the shaft holder and the second end of the shaft holder is pivotally connected to a sleeve gland through a connecting rod,enabling unrestricted swiveling up to 360 degrees. This configuration allows manual operation from any direction, facilitating adaptable installation and operation in diverse environments.

[0012] In some aspects of the present disclosure, the piston receives a reciprocating motion by the up and down actuation of the shaft holder.

[0013] In some aspect of the present disclosure, the piston fitted with the sleeve gland can swivel 360 DEG about the axis of the piston.

[0014] In some aspects of the present disclosure, the pressurized oil flows to the common passage through the delivery non return valves.

[0015] In some aspects of the present disclosure, the pump body comprises vertical passage openings for the flow of the pressurized oil delivered by the direction control valve.

[0016] In some aspects of the present disclosure, the pump body comprises outlet ports provided for the fitment of connectors.

[0017] In some aspects of the present disclosure, the pump body comprises a recess is provided to accommodate a pressure release valve.

[0018] In some aspects of the present disclosure, the pump body is equipped with mounting holes on both sides, to accommodate on vehicle based on the space availability.

BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, show certain aspects of the subject matter disclosed herein and, together with the description, help explain some of the principles associated with the disclosed implementations. In the drawing,

Figure 1 schematically illustrate a hybrid pump (HP), in accordance with an aspect of the present disclosure;

Figure 2A illustrates a cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure;

Figure 2B illustrates another cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure;

Figure 2C illustrates yet another cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure;

Figure 3 illustrates the exploded view of the hybrid pump assembly, in accordance with an aspect of the present disclosure;

Figure 4 illustrates partial sectional view of the hybrid pump assembly, in accordance with an aspect of the present disclosure;

Figure 5 illustrates a shaft holder assembly of the hybrid pump assembly, in accordance with an aspect of the present disclosure;

Figure 6 illustrates an exemplary view of the hybrid pump shown without oil reservoir, in accordance with an aspect of the present disclosure;

Figure 7A illustrates an exemplary view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 7B illustrates an exemplary another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 7C illustrates an exemplary yet another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 7D illustrates an exemplary yet another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 8A illustrates an exemplary view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 8B illustrates an exemplary another view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure;

Figure 8C illustrates an exemplary yet another view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure; and

Figure 9 illustrates an exemplary view of the cabin tilting arrangement fitted with the hybrid pump, in accordance with an aspect of the present disclosure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Various embodiments of the disclosure are discussed in detail below. While specific implementations are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations may be used without parting from the spirit and scope of the disclosure. Thus, the following description and drawings are illustrative and are not to be construed as limiting. Numerous specific details are described to provide a thorough understanding of the disclosure. However, in certain instances, known details are not described in order to avoid obscuring the description.

[0021] References to one or an embodiment in the present disclosure can be references to the same embodiment or any embodiment; and, such references mean at least one of the embodiments.

[0022] Reference to "one embodiment", "an embodiment", "one aspect", "some aspects", "an aspect" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Moreover, various features are described which may be exhibited by some embodiments and not by others.

[0023] The terms used in this specification generally have their ordinary meanings in the art, within the context of the disclosure, and in the specific context where each term is used. Alternative language and synonyms may be used for any one or more of the terms discussed herein, and no special significance should be placed upon whether or not a term is elaborated or discussed herein. In some cases, synonyms for certain terms are provided.

[0024] A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and is not intended to further limit the scope and meaning of the disclosure or of any example term. Likewise, the disclosure is not limited to various embodiments given in this specification. Without intent to limit the scope of the disclosure, examples of instruments, apparatus, methods and their related results according to the embodiments of the present disclosure are given below. Note that titles or subtitles may be used in the examples for convenience of a reader, which in no way should limit the scope of the disclosure. Unless otherwise defined, technical and scientific terms used herein have the meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. In the case of conflict, the present document, including definitions will control.

[0025] Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or can be learned by practice of the herein disclosed principles. The features and advantages of the disclosure can be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features of the disclosure will become more fully apparent from the following description and appended claims or can be learned by the practice of the principles set forth herein.

[0026] As mentioned before, there is a need for technology that overcomes these drawbacks, is more compact, requires less maintenance, and provides improved cabin tilt system. The present disclosure also provides a hybrid cabin tilt system that addresses these issues by providing an electrical and mechanical actuation of the hybrid cabin tilt pump that is more efficient, easier to maintain, and easier to operate for the opening and closing the driver cabin.

[0027] Figure 1 schematically illustrates a hybrid pump (HP), in accordance with an aspect of the present disclosure. As shown in Fig.1, the hybrid pump includes a pump body (101), oil reservoir (103) and a motor (105). The pump body (101) which is common to accommodate both manual and an electrical operation feature. The oil reservoir (103) is configured to store the oil. And a motor (105) is configured for the electrical operation. The oil reservoir (103) is arranged at one of the sides of the pump body (101) and the motor (105) is mounted on the other side of pump body (101) opposite to the side of the oil reservoir (103) or any other side based on packaging requirement. As shown in Fig. 3, a gasket (107) is arranged in between the pump body (101) and the oil reservoir (103) to arrest the leakage of the oil arranged in the oil reservoir (103).

[0028] In some aspects of the present disclosure, the pump body (101) is equipped with mounting holes on both sides, to accommodate on vehicle based on the space availability.

[0029] In some aspects of the present disclosure, the oil reservoir (103) is constructed using transparent material such as nylon, poly carbonate, acrylic, etc. to facilitate easy accessing the volume of oil present in the oil reservoir (103). To know the oil level is important for the operator as oil is the operating medium. When the system is non-operable, operator can easily identify the absence of oil through this transparent reservoir.

[0030] Figure 2A illustrates a cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure. The pump body (101) as shown in Fig. 2A, comprises a first cylindrical portion (101a) to accommodate a piston (109) (As shown in Fig.3) provided for the manual operation and a ball seating portion (101b) to accommodate a suction ball (111) (As shown in Fig.4). Also, the pump body (101) has a cylindrical passage opening (101c) to facilitate for the flow of oil from the oil reservoir (103) to the first cylindrical portion (101a) of the pump body (101).

[0031] Figure 2B illustrates another cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure. As shown in Fig. 2B, the pump body (101) comprises a second cylindrical portion (101d) to accommodate the motor (105) and a transmission assembly provided for the electrical operation of the hybrid pump (HP). The pump body (101) further comprises recess portions (101e,101e') to accommodate delivery non return valves (113,115) shown in Fig. 8A provided to deliver the pressurized oil to a common passage (101f) shown in Fig.2c. A passage opening (101g) is provided for the flow of pressurized oil emerging through the delivery non return valves (113,115) to a chamber (101h) provided for the fitment of a direction control valve (117) shown in Fig.8A. A vertical passage opening (101i, 101j) are provided for the flow of pressurized oil to outlet ports (101k, 101l) provided for a fitment of connectors (119,121) (As shown in Fig.3) provided for connecting a pressure hose (123) provided for the supply of pressurized oil to a latch (125) and a hydraulic cylinder (127).

[0032] Figure 2C illustrates yet another cross-sectional view of the pump body (101), in accordance with an aspect of the present disclosure. The pump body (101) includes the common passage (101f) through which the pressurized oil pumped by the manual and electrical operation of the hybrid pump (HP) flows to the chamber (101h) that accommodates the direction control valve (117). The recess (101m) is provided to accommodate a pressure release valve (129) provided to safeguard the hybrid pump (HP) from the excess pressure built up which may occur during the electrical / manual operation.

[0033] Referring to Fig.3 and Fig.4, the manual activation is achieved by the reciprocating motion of the piston (109) that moves within the first cylindrical portion (101a) provided in the pump body (101). As shown in Fig.3, a pump gland (133) is mounted on the pump body (101) to support the piston (109). The suction ball (111) shown in Fig.7A, is assembled at the bottom of the ball seating portion (101b) that seals the entry of pressurised oil to the oil reservoir (103) during the deliver stroke of the piston (109). A piston seal (137) is mounted at the bottom portion of the piston (109) to establish airtight connection between the first cylindrical portion (101a) and the piston (109). Through the pump gland (133) the upper end of the piston (109) passes that is pivotally connected to the first end of a shaft holder (139) through a first pivot pin (143). The shaft holder (139) is provided to incorporate reciprocating motion to the piston (109).

[0034] A sleeve gland (141) is mounted at the neck portion of the pump gland (133) such a manner the sleeve gland (141) can swivel 360 deg about the axis of the piston (109). In a preferred embodiment the second end of the shaft holder (139) is connected to the sleeve gland (141) through a connecting rod (145). While the first end of the connecting rod (145) is pivotally connected to the shaft holder (139) through a second pivot pin (147), the second end of the connecting rod (145) is pivotally connected to the sleeve gland (141) through a third of pivot pin (149).

[0035] Figure 5 illustrates a shaft holder assembly of the hybrid pump assembly, in accordance with an aspect of the present disclosure. The up and down actuation of the shaft holder (139) provides reciprocating motion to the piston (109). A shaft of required length is inserted into the shaft holder (139) to facilitate the up and down actuation of the shaft holder (139) with less effort. The stroke length of the piston (109) can be adopted according to the requirement by changing the effective distance between the first and second end of the connecting rod (145). A stopper (151) is provided to control the angle of the manual actuation. Shaft holder can be manually operated from any direction as this swives up to 360 degrees. So that pump can be fitted wherever possible. Due to this swivel type, same pump can be communized for many vehicles and manual operations can be done through approachable side.

[0036] Figure 6 illustrates an exemplary view of the hybrid pump shown without oil reservoir, in accordance with an aspect of the present disclosure. Reference is invited to the Fig.3 and Fig. 6. The motor (105) is mounted to the pump body (101) to provide electrical actuation. A drive pin (153) is mounted on bearings fitted in the pump body (101) has a first end and a second end. The first end of the drive pin (153) is fitted to the motor shaft with key or any other mechanism. The second end of the drive pin (153) extends to the other side of the pump body (101) (reservoir side) has a cylindrical stepped portion disposed for the mounting of an eccentric cam (155). A bearing (157) is press fitted to the periphery of the eccentric cam (155) and fitted on the second end of the drive pin (153) with a key such a manner the rotation of the motor shaft transmits torque to the eccentric cam (155). The bearing (157) fitted to the eccentric cam (155) is in constant engagement with a spring-loaded piston of the pump element (159) and a rotation of the motor (105) rotates the eccentric cam (155) which provides to and pro motion to the piston of the pump element (159) to facilitate pumping of the low-pressure oil from the oil reservoir (103) that enters through the lock screw suction (161) shown in Fig. 8a & b. The pressurized oil pumped enters the delivery non return valve (115) through a lock screw delivery (163). The pressurized oil emerging through the delivery non return valve (115) reaches the direction control valve (117).

[0037] Figure 7A illustrates an exemplary view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig.7A, during the upward movement of the piston (109), which is the suction stroke, the suction ball (111) allows the entry of the oil from the oil reservoir (103) into the pressure chamber.

[0038] Figure 7B illustrates an exemplary another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig.7B, during the downward movement of the piston (109) which is the delivery stroke, the suction ball (111) seals the inlet passage of the oil from the oil reservoir (103) and allows the pressurized oil to flow out.

[0039] Figure 7C illustrates an exemplary yet another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig.7C, the pressurized oil flows out and enters the delivery non return valve (113).

[0040] Figure 7D illustrates an exemplary yet another view of mechanical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig.7D, the pressurized oil emerging from the delivery non return valve (113) reaches the direction control valve (117) which diverts the pressurized oil to the respective ports from where pressurized oil supplied to the hydraulic cylinder (127) and the latching (125) to facilitate tilting/ retracting of the cabin.

[0041] Figure 8A illustrates an exemplary view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig.8A, the low-pressure oil from the oil reservoir (103) reaches the lock screw suction (161) and enters the pump element (159) during the upward movement of the piston through the lock screw suction (103).

[0042] Figure 8B illustrates an exemplary another view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig. 8B, during the downward movement of the piston (109), the lock screw suction (161) seals the entry of oil to the oil reservoir (103) and allows the pressurized oil to flow out through the lock screw delivery (163).

[0043] Figure 8C illustrates an exemplary yet another view of electrical operation of the hybrid pump, in accordance with an aspect of the present disclosure. As shown in Fig. 8C, the pressurized oil enters the delivery non return valve (115) and reaches the direction control valve (117). The direction control valve (117) diverts the pressurized oil to the respective ports from where pressurized oil supplied to the hydraulic cylinder (127) and the latch (125) to facilitate tilting / retracting of the cabin.

[0044] Figure 9 illustrates an exemplary view of the cabin tilting arrangement fitted with the hybrid pump, in accordance with an aspect of the present disclosure. The cabin tilt arrangement includes the hybrid cabin tilt pump (HP), the cylinder (127), the latch (125) and the pressure hose (123).

[0045] The cabin tilt arrangement includes the hybrid cabin tilt pump (HP) that is connected to the cylinder (127). The hybrid cabin tilt pump (HP) is designed to operate either electrically or manually. The cylinder (127) is adapted to receive and send pressurized oil to facilitate tilting / retracting of the cabin. The latch (125) is connected to the hybrid cabin tilt pump (HP). The latch (125) is adapted to lock a cabin in the down position and release when the cabin is raised.

[0046] Pump body (101) consists of mounting holes on both the sides. This allows vehicle manufacturers to mount the Hybrid pump from either direction. So that the same Hybrid pump can be used for various types of vehicles without major modifications on vehicle. Also, shaft holder (139) allow operator to operator to operate from any direction using swivel.

[0047] The implementation set forth in the foregoing description does not represent all implementations consistent with the subject matter described herein. Instead, they are merely some examples consistent with aspects related to the described subject matter. Although a few variations have been described in detain above, other modifications or additions are possible. In particular, further features and/or variations can be provided in addition to those set forth herein. For example, the implementation described can be directed to various combinations and sub combinations of the disclosed features and/or combinations and sub combinations of the several further features disclosed above. In addition, the logic flows depicted in the accompany figures and/or described herein do not necessarily require the particular order shown, or sequential order, to achieve desirable results. Other implementations may be within the scope of the following claims.

Claims

1. A hybrid pump (HP) comprises:

a pump body (101) that includes:

a first cylindrical portion (101a);

a second cylindrical portion (101d);

a common passage (101f);

an oil reservoir (103) that is arranged at one of the sides of the pump body (101);

a motor (105) that is mounted on the other side of pump body (101) at the second cylindrical portion (101d) to incorporate the rotary motion to an eccentric cam (155) to provide to and pro motion to a piston of a pump element (159);

a piston (109) that is connected to a shaft holder (139) to incorporate reciprocating motion;

wherein the first cylindrical portion (101a) is configured to accommodate the piston (109);

wherein the common passage (101f) is configured for the passage of the pressurized oil pumped either by a manual or electrical operation of the hybrid pump (HP) into a chamber (101h); and

wherein a common direction control valve (117) is fitted to the chamber (101h).

2. The hybrid pump (HP) as claimed in claim 1, wherein the oil reservoir (103) is constructed using transparent material such as nylon, poly carbonate, acrylic and not limited to.

3. The hybrid pump (HP) as claimed in claim 1, wherein the upper end of the piston (109) is pivotally connected to the first end of the shaft holder (139) and the second end of the shaft holder (139) is pivotally connected to a sleeve gland (141) through a connecting rod (145) enabling unrestricted swiveling up to 360 degrees which allows manual operation from any direction, facilitating adaptable installation and operation in diverse environments.

4. The hybrid pump (HP) as claimed in claim 1, wherein the piston (109) receives a reciprocating motion by the up and down actuation of the shaft holder (139).

5. The hybrid pump (HP) as claimed in claim 1, wherein the piston (109) fitted with the sleeve gland (141) can swivel 360 DEG about the axis of the piston (109).

6. The hybrid pump (HP) as claimed in claim 1, wherein the pressurized oil flows to the common passage (101f) through the delivery non return valves (113,115).

7. The hybrid pump (HP) as claimed in claim 1, wherein the pump body (101) comprises vertical passage openings (101i,101j) for the flow of the pressurized oil delivered by the direction control valve (117).

8. The hybrid pump (HP) as claimed in claim 1, wherein the pump body (101) comprises outlet ports (101k,101l) provided for the fitment of connectors (119,121).

9. The hybrid pump (HP) as claimed in claim 1, wherein the pump body (101) comprises a recess (101m) is provided to accommodate a pressure release valve (129).

10. The hybrid pump (HP) as claimed in claim 1, wherein the pump body (101) is equipped with mounting holes on both sides, to accommodate on vehicle based on the space availability.

Drawing