Field of the Invention
[0001] The present invention relates to a hinge and more particularly to a hinge device
for use as a furniture hinge and having an elastic member which is in contact with
a cam via a sleeve member.
Background of the Invention
[0002] Furniture such as doors and cabinets is generally mounted with hinges by means of
which a movable member of the furniture can be opened or closed with respect to the
main body of the furniture. For example, the Background of the Invention section of
the specification of
US Patent No. 8,689,402 B2 states that a furniture hinge typically includes a spring for generating a closing
and/or opening force and that, however, the spring may break after the furniture hinge
has been used for a while. To overcome this drawback of the conventional furniture
hinges, the aforesaid patent discloses a furniture hinge with a sliding element. More
specifically, the furniture hinge (100) disclosed in the embodiments and drawings
(e.g., FIG. 1, FIG. 2, FIG. 3a, FIG. 3b, and FIG. 6) of the aforesaid patent has a
fitting (101) and a hinge cup (102) to be opened or closed with respect to each other.
The furniture hinge (100) also includes a spring (2) having an end portion mounted
with a sliding element (1). When the hinge cup (102) is opened or closed with respect
to the fitting (101), the end portion of the spring (2) is in movable contact with
a cam (3) via the sliding element (1). According to this arrangement, the end portion
of the spring (2) is in contact with the cam (3) via the sliding element (1) and is
therefore less likely to break than its prior art counterparts. Nevertheless, the
furniture hinge (100) has its shortcomings as explained below. The end portion of
the spring (2, 12) has a circular cross section, and the sliding element (1, 11) has
a cylindrical cavity corresponding to the circular cross section so that the end portion
of the spring (2, 12) can be mounted in the cavity. To ensure that the sliding element
(1, 11) stays in place with respect to the spring (2, 12), the sliding element (1,
11) is engaged in the coils of the spring (2, 12) via an attachment device (4, 14).
Obviously enough, the sliding element (1, 11) will fall off the spring (2, 12) if
the attachment device (4, 14) is absent. On the other hand, while a circle-to-circle
mounting design is used for connecting the sliding element and the spring, the support
point is engaged in the coils of the spring via the attachment device of the sliding
element. If the mounting tolerance of the support point is improper in relation to
the contact angle between the cam and the sliding element, the quality of use of the
hinge will be compromised.
[0003] It can be known from the above that the mounting and positioning methods of the sliding
element affect the quality of use. As the assembly of the various components of a
hinge device may have different requirements, the connection between the sliding element
and the spring should be taken into account to meet practical needs.
Summary of the Invention
[0004] The present invention relates to a furniture hinge in which a sleeve member and an
elastic member are securely connected to each other.
[0005] According to one aspect of the present invention, a hinge device includes a fitting,
a connecting arm, a cam, an elastic member, and a sleeve member. The connecting arm
is pivotally connected to the fitting. The cam is located at the connecting arm. The
elastic member is mounted to the fitting and includes an end portion having a non-circular
cross section. The sleeve member is attached to the elastic member and is in contact
with the cam. The sleeve member includes a cavity in which the end portion of the
elastic member can be mounted.
[0006] According to another aspect of the present invention, a hinge device includes a fitting,
a connecting arm, an elastic member, and a sleeve member. The connecting arm is pivotally
connected to the fitting. The elastic member is mounted to the fitting and includes
an end portion having a non-circular cross section. The sleeve member is attached
to the elastic member and interacts with the connecting arm. The sleeve member includes
a cavity in which the end portion of the elastic member can be mounted. The fitting
is able to be driven to pivot with respect to the connecting arm by an elastic force
generated by the elastic member.
[0007] According to still another aspect of the present invention, a hinge device adapted
to be mounted to a piece of furniture is provided, wherein the furniture includes
a first furniture member and a second furniture member. The hinge device includes
a first fitting, a second fitting, a connecting arm, a cam, an elastic member, and
a sleeve member. The first fitting is mounted to the first furniture member. The second
fitting is mounted to the second furniture member. The connecting arm pivotally connects
the first fitting and the second fitting. The cam is located at the connecting arm.
The elastic member is mounted to one of the first fitting and the second fitting and
includes an end portion having a non-circular cross section. The sleeve member is
attached to the elastic member and is in contact with the cam. The sleeve member includes
a cavity in which the end portion of the elastic member can be mounted.
[0008] In some embodiments of any of the foregoing aspects, the hinge device further includes
another fitting connected to the connecting arm.
[0009] In some embodiments of any of the foregoing aspects, the elastic member further includes
another end portion and a coil portion connected between the end portion and the another
end portion; the coil portion of the elastic member defines a mounting hole, and the
hinge device further includes a connecting member passing through the mounting hole
in order to mount the elastic member to the fitting; and the another end portion of
the elastic member is pressed against the fitting.
[0010] In some embodiments of any of the foregoing aspects, the elastic member includes
a portion other than the end portion and having a non-circular cross section.
[0011] In some embodiments of any of the foregoing aspects, the cavity of the sleeve member
is a non-circular cavity.
[0012] In some embodiments of any of the foregoing aspects, the cavity of the sleeve member
includes a first portion and a second portion, the first portion has a greater diameter
than the second portion, and the second portion has a smaller width than the end portion
of the elastic member.
[0013] In some embodiments of any of the foregoing aspects, the first portion of the cavity
of the sleeve member has a diameter substantially equal to a width of the end portion
of the elastic member.
[0014] One advantage of the present invention is that the elastic member of the furniture
hinge is in contact with the cam via the sleeve member, and that due to its non-circular
cross section, the end portion of the elastic member can effectively secure the sleeve
member in position in the peripheral direction of the end portion of the elastic member.
Brief Description of the Drawings
[0015]
FIG. 1 is a perspective view of the hinge device according to an embodiment of the
present invention;
FIG. 2A is an exploded view showing how the two fittings and the connecting arm of
the hinge device in FIG. 1 are connected together via a pivotal connecting member;
FIG. 2B is an exploded view showing the sleeve member attached to each elastic member
of the hinge device in FIG. 1 and how each elastic member is mounted to the first
fitting via a connecting member;
FIG. 3A is an assembled view of an elastic member and the corresponding sleeve member
of the hinge device of FIG. 1, wherein the elastic member has an end portion with
a non-circular cross section;
FIG. 3B is an exploded view of the elastic member and the sleeve member in FIG. 3A;
FIG. 4A shows how the elastic members of the hinge device in FIG. 1 are mounted to
the first fitting and how the elastic members come into contact with the cams via
the corresponding sleeve members respectively;
FIG. 4B is a partial enlarged view of FIG. 4A, showing that the sleeve member has
a curved surface in contact with the cam;
FIG. 5A shows an elastic member of the hinge device according to another embodiment
of the present invention, wherein the elastic member has an end portion with a rectangular
cross section;
FIG. 5B shows an elastic member of the hinge device according to yet another embodiment
of the present invention, wherein the elastic member has an end portion with an elliptic
cross section;
FIG. 6 shows how each cam of the hinge device in FIG. 1 is in contact with a surface
of the corresponding sleeve member;
FIG. 7A shows how a sleeve member of the hinge device according to still another embodiment
of the present invention is in contact with the corresponding cam;
FIG. 7B shows how a sleeve member of the hinge device according to a further embodiment
of the present invention is in contact with the corresponding cam;
FIG. 8A shows how a sleeve member of the hinge device according to yet another embodiment
of the present invention is in contact with the corresponding cam;
FIG. 8B shows how a sleeve member of the hinge device according to still another embodiment
of the present invention is in contact with the corresponding cam;
FIG. 9A is an exploded view of an elastic member and the corresponding sleeve member
of the hinge device according to a further embodiment of the present invention;
FIG. 9B is an exploded view of an elastic member and the corresponding sleeve member
of the hinge device according to yet another embodiment of the present invention;
FIG. 10A is an exploded view of an elastic member and the corresponding sleeve member
of the hinge device according to still another embodiment of the present invention;
FIG. 10B is an assembled view of the elastic member and the sleeve member in FIG.
10A; and
FIG. 11 shows how the hinge device in FIG. 1 is applied to a piece of furniture.
Detailed Description of the Invention
[0016] Referring to FIG. 1, a hinge device 20 according to an embodiment of the present
invention includes a first fitting 22, a connecting arm 24 pivotally connected to
the first fitting 22, a cam 26 located at the connecting arm 24, an elastic member
28 mounted to the first fitting 22, and a sleeve member 30 attached to a portion of
the elastic member 28 and in contact with the cam 26. In this embodiment, the hinge
device 20 further includes a second fitting 32 connected to the connecting arm 24.
Please note that the hinge device 20 in this embodiment includes a pair of cams 26,
a pair of elastic members 28, and a pair of sleeve members 30 by way of example only;
the cam 26, the elastic member 28, and the sleeve member 30 need not be provided in
pairs.
[0017] As shown in FIG. 2A, the first fitting 22 includes a receiving room 34 defined by
a plurality of walls. For example, the first fitting 22 has a pair of sidewalls 36,
a bottom wall 38 connected between the sidewalls 36, a front wall 40 connected to
the front ends of the sidewalls 36, and a rear wall 42 connected to the rear ends
of the sidewalls 36. Each sidewall 36 has a pivot hole 44 and a connecting hole 46.
The bottom wall 38 has a pair of lugs 48.
[0018] The connecting arm 24 has two end portions, one of which is connected to the first
fitting 22 and the other of which is connected to the second fitting 32. A pivotal
connecting member 50 is passed through the connecting arm 24 and the pivot holes 44
to pivotally connect the connecting arm 24 and the first fitting 22, thus allowing
the first fitting 22 to pivot with respect to the connecting arm 24 (or the second
fitting 32).
[0019] The pair of cams 26 are located on two lateral sides of the connecting arm 24 respectively
and can be connected to or formed integrally with the connecting arm 24.
[0020] As shown in FIG. 2B, each elastic member 28 includes a first end portion 52. In this
embodiment, each elastic member 28 further includes a second end portion 54 and a
coil portion 56, wherein the coil portion 56 is coiled and is connected between the
end portions 52 and 54. The coil portion 56 of each elastic member 28 defines a mounting
hole 58 corresponding to one connecting hole 46 of the first fitting 22. Each elastic
member 28 is mounted to one lug 48 of the first fitting 22 with a connecting member
60 passing through its mounting hole 58 and the corresponding connecting hole 46.
Once mounted, each elastic member 28 is located in the receiving room 34 of the first
fitting 22 and has its second end portion 54 pressed against a portion of the first
fitting 22, such as the wall surface of the bottom wall 38 which faces the receiving
room 34.
[0021] FIG. 3A and FIG. 3B show how each sleeve member 30 is arranged in relation to the
corresponding elastic member 28. As shown in the drawings, the first end portion 52
of the elastic member 28 has a non-circular cross section. In other words, the cross
section of the first end portion 52 is not circular. By way of example only, the cross
section of the first end portion 52 may be D-shaped. The sleeve member 30, on the
other hand, includes a cavity 62 through which the first end portion 52 of the elastic
member 28 can pass and in which the first end portion 52 of the elastic member 28
can be mounted. The cavity 62, for example, is a non-circular cavity. The sleeve member
30 can be made of a wear-resistant plastic material. Owing to the non-circular cross
section of the first end portion 52 of the elastic member 28, the sleeve member 30
can be effectively held in position in the peripheral direction of the first end portion
52 of the elastic member 28.
[0022] It is worth mentioning that each elastic member 28 can be so manufactured that it
has a non-circular cross section throughout, meaning the cross section of the entire
elastic member 28, including portions other than the first end portion 52, can be
non-circular. More specifically, both end portions 52 and 54 and the coil portion
56 of the elastic member 28 may have a non-circular cross section.
[0023] Referring to FIG. 4A and FIG. 4B, each elastic member 28 is mounted to the first
fitting 22 via the corresponding connecting member 60, and the first end portion 52
of each elastic member 28 is in contact with the corresponding cam 26 via the corresponding
sleeve member 30. Each sleeve member 30 may have a curved surface 64 for contact with
the corresponding cam 26.
[0024] Referring to FIG. 5A and FIG. 5B, the first end portion of each elastic member 28
may have a square or rectangular cross section (e.g., the first end portion 200 shown
in FIG. 5A) or an elliptic cross section (e.g., the first end portion 300 shown in
FIG. 5B). In practice, there are no limitations on the shape of the non-circular cross
section.
[0025] As shown in FIG. 6, each cam 26 of the hinge device 20 is in contact with a surface
(e.g., the curved surface 64) of the corresponding sleeve member 30 and can be displaced
along the surface in the length direction of the end portion 52 of the corresponding
elastic member 28 such that an opening force or a closing force can be generated between
the first fitting 22 and the second fitting 32 of the hinge device 20.
[0026] Referring to FIG. 7A, in another embodiment of the present invention, the sleeve
member 400 has a cylindrical cross section and has a curved surface 402 for contact
with the cam 26. Referring to FIG. 7B, in yet another embodiment of the present invention,
the cam 500 has a curved surface 502 for contact with the sleeve member 504.
[0027] Referring to FIG. 8A, in still another embodiment of the present invention, the cam
600 has a curved surface 602 while the sleeve member 604 has a concavely curved surface
corresponding to the curved surface 602 of the cam 600. Referring to FIG. 8B, in further
embodiment of the present invention, the sleeve member 606 has a generally V-shaped
surface for contact with the curved surface 602 of the cam 600.
[0028] As shown in FIG. 9A and FIG. 9B, in another embodiment of the present invention,
the coil portion 702 and the second end portion 704 of the elastic member 700 are
generally circular in cross section while the first end portion 706 of the elastic
member 700 has a non-circular cross section corresponding to the cavity of the sleeve
member 30, wherein the cavity may be a non-circular one such as a D-shaped cavity
(see FIG. 9A) or a triangular cavity (see FIG. 9B), without limitation.
[0029] Referring to FIG. 10A, in yet another embodiment of the present invention, the cavity
802 of the sleeve member 800 includes a first portion 804 and a second portion 806.
The first portion 804 has a greater diameter than the second portion 806, and the
width W1 of the second portion 806 is less than the width W2 of the first end portion
810 of the elastic member 808. Accordingly, referring to FIG. 10B, after being inserted
through the first portion 804 of the sleeve member 800 to a position adjacent to the
second portion 806, the first end portion 810 of the elastic member 808 is restrained
in the peripheral direction and is therefore blocked in the cavity 802 at a position
adjacent to the second portion 806. Thus, the first end portion 810 of the elastic
member 808 is securely mounted in the cavity 802 of the sleeve member 800.
[0030] FIG. 11 shows how the hinge device 20 according to an embodiment of the present invention
is mounted to a piece of furniture 900. The furniture 900 includes a first furniture
member 902 and a second furniture member 904, wherein the first furniture member 902
can be opened or closed with respect to the second furniture member 904. The first
fitting 22 of the hinge device 20 is mounted to the first furniture member 902 while
the second fitting 32 is mounted to the second furniture member 904. As the first
fitting 22 is pivotally connected to the connecting arm 24, the first furniture member
902 can be brought into an opened state with respect to the connecting arm 24 (or
the second fitting 32) via the first fitting 22, and when the first fitting 22 is
pivoted by an external force in a closing direction D with respect to the connecting
arm 24 (or the second fitting 32), the elastic members 28 provide an elastic closing
force such that, with the sleeve members 30 in movable contact with their respective
cams 26, the first fitting 22 can be further driven to pivot with respect to the connecting
arm 24 by the elastic force generated by the elastic members 28.
[0031] While the present invention has been disclosed by way of the preferred embodiments
described above, the embodiments are not intended to be restrictive of the present
invention. The scope of patent protection sought by the applicant is defined by the
appended claims.
1. A hinge device (20), comprising:
a first fitting (22);
a connecting arm (24) pivotally connected to the first fitting (22);
an elastic member (28, 700, 808) mounted to the first fitting (22), the elastic member
(28, 700, 808) including an end portion (52, 200, 300, 706, 810) having a non-circular
cross section; and
a sleeve member (30, 400, 504, 604, 606, 800) attached to the elastic member (28,
700, 808) and interacting with the connecting arm (24), the sleeve member (30, 400,
504, 604, 606, 800) including a cavity (62, 802) in which the end portion (52, 200,
300, 706, 810) of the elastic member (28, 700, 808) can be mounted.
2. The hinge device (20) as claimed in claim 1, further comprising a cam (26, 500, 600)
located at the connecting arm (24), wherein the sleeve member (30, 400, 504, 604,
606, 800) is in contact with the cam (26, 500, 600).
3. The hinge device (20) as claimed in claim 1, wherein the first fitting (22) is able
to be driven to pivot with respect to the connecting arm (24) by an elastic force
generated by the elastic member (28, 700, 808).
4. The hinge device (20) as claimed in any of claims 1-3, further comprising a second
fitting (32) connected to the connecting arm (24), wherein the elastic member (28,
700, 808) is mounted to one of the first fitting (22) and the second fitting (32).
5. The hinge device (20) as claimed in claim 2, further comprising a second fitting (32),
wherein the hinge device (20) is adapted to be mounted to a piece of furniture (90),
the furniture (90) including a first furniture member (902) and a second furniture
member (904); the first fitting (22) is mounted to the first furniture member (902),
while the second fitting (32) is mounted to the second furniture member (904); the
connecting arm (24) pivotally connects the first fitting (22) and the second fitting
(32); and the elastic member (28, 700, 808) is mounted to one of the first fitting
(22) and the second fitting (32).
6. The hinge device (20) as claimed in any of claims 1-5, wherein the elastic member
(28) includes a portion other than the end portion (52, 200, 300) and having a non-circular
cross section.
7. The hinge device (20) as claimed in any of claims 1-3, wherein the elastic member
(28, 700, 808) further includes another end portion (54, 704) and a coil portion (56,
702), and the coil portion (56, 702) is connected between the end portion (52, 200,
300, 706, 810) and said another end portion (54, 704).
8. The hinge device (20) as claimed in claim 7, wherein the coil portion (56, 702) of
the elastic member (28, 700, 808) defines a mounting hole (58), and the hinge device
(20) further includes a connecting member (60) extending through the mounting hole
(58) in order to mount the elastic member (28, 700, 808) to the first fitting (22).
9. The hinge device (20) as claimed in claim 7, wherein said another end portion (54,
704) of the elastic member (28, 700, 808) is pressed against the first fitting (22).
10. The hinge device (20) as claimed in claim 4 or 5, wherein the elastic member (28,
700, 808) further includes another end portion (54, 704) and a coil portion (56, 702),
and the coil portion (56, 702) is connected between the end portion (52, 200, 300,
706, 810) and said another end portion (54, 704).
11. The hinge device (20) as claimed in claim 10, wherein the coil portion (56, 702) of
the elastic member (28, 700, 808) defines a mounting hole (58), and the hinge device
(20) further includes a connecting member (60) extending through the mounting hole
(58) in order to mount the elastic member (28, 700, 808) to the one of the first fitting
(22) and the second fitting (32).
12. The hinge device (20) as claimed in claim 10, wherein said another end portion (54,
704) of the elastic member (28, 700, 808) is pressed against the one of the first
fitting (22) and the second fitting (32).
13. The hinge device (20) as claimed in any of claims 1-12, wherein the cavity (62, 802)
of the sleeve member (30, 400, 504, 604, 606, 800) is a non-circular cavity.
14. The hinge device (20) as claimed in any of claims 1-13, wherein the cavity (802) of
the sleeve member (800) includes a first portion (804) and a second portion (806),
and the first portion (804) has a greater diameter than the second portion (806).
15. The hinge device (20) as claimed in claim 14, wherein the second portion (806) has
a width (W1) less than a width (W2) of the end portion (810) of the elastic member
(808).
Amended claims in accordance with Rule 137(2) EPC.
1. A hinge device (20), comprising:
a first fitting (22);
a connecting arm (24) pivotally connected to the first fitting (22);
an elastic member (808) mounted to the first fitting (22), the elastic member (808)
including an end portion (52, 200, 300, 706, 810) having a non-circular cross section;
and
a sleeve member (800) attached to the elastic member (808) and interacting with the
connecting arm (24), the sleeve member (800) including a cavity (802) in which the
end portion (52, 200, 300, 706, 810) of the elastic member (808) can be mounted; and
a cam (26, 500, 600) located at the connecting arm (24), wherein the sleeve member
(800) is in contact with the cam (26, 500, 600), wherein
the elastic member (808) further includes another end portion (54, 704) and a coil
portion (56, 702), and the coil portion (56, 702) is connected between the end portion
(52, 200, 300, 706, 810) and said another end portion (54, 704), wherein
the cavity (802) of the sleeve member (800) is a non-circular cavity,
characterized in, that
the cavity (802) of the sleeve member (800) includes a first portion (804) and a second
portion (806), and the first portion (804) has a greater diameter than the second
portion (806), and that
the second portion (806) has a width (W1) less than a width (W2) of the end portion
(810) of the elastic member (808).
2. The hinge device (20) as claimed in claim 1, wherein the first fitting (22) is able
to be driven to pivot with respect to the connecting arm (24) by an elastic force
generated by the elastic member (808).
3. The hinge device (20) as claimed in any of claims 1-2, further comprising a second
fitting (32) connected to the connecting arm (24), wherein the elastic member (808)
is mounted to the first fitting (22).
4. The hinge device (20) as claimed in claim 1, further comprising a second fitting (32),
wherein the hinge device (20) is adapted to be mounted to a piece of furniture (90),
the furniture (90) including a first furniture member (902) and a second furniture
member (904); the first fitting (22) is mounted to the first furniture member (902),
while the second fitting (32) is mounted to the second furniture member (904); the
connecting arm (24) pivotally connects the first fitting (22) and the second fitting
(32); and the elastic member (808) is mounted to the first fitting (22).
5. The hinge device (20) as claimed in any of claims 1-4, wherein the elastic member
(808) includes a portion other than the end portion (52, 200, 300) and having a non-circular
cross section.
6. The hinge device (20) as claimed in claim 1, wherein the coil portion (56, 702) of
the elastic member (808) defines a mounting hole (58), and the hinge device (20) further
includes a connecting member (60) extending through the mounting hole (58) in order
to mount the elastic member (808) to the first fitting (22).
7. The hinge device (20) as claimed in claim 1, wherein said another end portion (54,
704) of the elastic member (808) is pressed against the first fitting (22).