PORTABLE WORK BENCH

Description

SCOPE

[0001] This invention refers to a portable work bench intended to facilitate the performance of different mechanical and similar operations in various places, for example, on a construction work site or similar.

HISTORY

[0002] For the performance of work and construction complementary and auxiliary operations, occasionally tables to support devices and tools employed in said work are used. Often these tables lack suitable conditions for optimum performance of the work. In other cases the tables used do not have the means for suitably supporting the tools and devices needed to carry out the operations in question.

[0003] In the present state-of-the-art technique, for example the US 181 85 01 A and the US 299 79 00 A, several workbench types and attaching elements are known, which are intended for the technicians to carry out different mechanical operations outside the workshop. Some of these benches do not have attaching devices for parts and elements to be machined or finished before their incorporation in the installations o work sites.

[0004] It was becoming necessary to have a workbench with functional properties suitable for the needs of the operators when performing auxiliary technical operations of the type mentioned, such properties not being known in the previous performances.

BRIEF DESCRIPTION OF THE INVENTION

[0005] The new workbench consists of a solid frame and, at the same time, is easily portable thus permitting it to be transported in a vehicle. A solid base plate that defines the work plane and holds a movable and articulated arm on the head of which is an attaching device for the objects or parts to be treated, for example, their machining, is placed on the frame.

[0006] In order to facilitate the explanation, this description includes sketches in which a performance case of a portable workbench is represented for illustrative and non-limiting purposes, according to the principles of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] 

Figure 1 is an overall and detailed view of the new workbench and figure 2 is a detail of the attaching device.

Figure 3 is a side elevated view of a version of the bench mounted for use.

DETAILED DESCRIPTION OF THE INVENTION

[0008] The elements with numbers in the drawings correspond to the parts indicated below, forming functional sub-sets.

A. The carrying structure 1, which is very solid and resistant, constituted by a frame 11 with a preferably rectangular shape, defined by a vertical perimeter 12 and a horizontal plane board 13 on which the table top 2 of the bench rests immediately, and four supporting feet 14 made of an angular profile that are able to be folded or dismounted as regards the frame and possibly slightly leaning in divergence towards the floor. The set will be advantageously made of steel plate with a suitable thickness.

B. The workbench top 2 has the shape and sizes adjusted to those inside the perimeter 12 of the frame framework. It may be of one or various parts on the condition that it is resistant to deformation and its upper surface must be smooth but with a certain roughness to avoid the parts and tools from sliding in an undesirable way.
Typically, the bench top 2 will be of hard wood or light metal and will have means to attach it to the frame 1, which will be dismountable for transporting and storage. The back part has an orifice 21 corresponding to the orifice 15 of the frame framework.

C. The vertical axis 3 forms a support for the attaching device of the parts to be worked on and consists of a rod, preferably of carbon and tempered steel, with a shape and diameter suitable to make it highly resistant, taking into account the stresses it will have to withstand. Its foot has a screwed section 31 intended to be inserted into the orifices 15 of the frame 11 and 21 of the bench top 2 with the interposition of a washer 32 and final securing (dismountable) by means of a nut 33 with its washer or equivalent element.

D. The attaching device of the parts consists of an articulating block 5 with an orthogonal shape, provided with a vertical perforation 51, intended for insertion of the vertical carrying rod 3 and two parallel perforations for the passing of two horizontally moving rods 6 with the possibility of sliding. These are joined to a second orthoedric block 7, provided with a rectangular entrance 71 on one of the vertical faces and a transversal perforation 72. The block 7 carries a rod 73 for attaching an eccentric 8 with a circular shape.

[0009] Attachment of the parts is made by a lever or arm 9 with a laid L shape. Its smaller section 91 is intended to be housed in the entrance 71 of the block 7, as indicated in figure 2, and has an orifice 92 that will correspond to the transversal perforation 72, permitting insertion of a pin 10.

[0010] The above elements define a horizontal arm that basically constitutes the supporting device of the parts to be machined, in which three basic movements are possible:

a) vertical of the horizontal arm, parallel to itself on the vertical axis 3;

b) turning of the horizontal arm on its plane with respect to the axis 3 itself, and

c) horizontal of the arm, on its plane, by sliding the rods 6 with respect to the block 5

The eccentric 8 has a cylindrical shape and a lateral arm 81 for operation, which facilitates the tightening of the retained parts. It determines the stress made on the lever 9 and the stress of the latter on the retained part at each moment during its machining.
The components of the described device are sized suitably in order to be able to resist and transmit considerable stresses, in accordance with the auxiliary operations it is anticipated will be carried out on the workbench.

[0011] Figure 3 shows a portable workbench the shape of which has some structural variants as regards the performance of figures 1 and 2, but maintaining the general idea of a supporting frame 1, a support that can adapt a vertical position 94 and a horizontal position 95, movable according to the arrows, with the possibility of having the three basic movements indicated above for the attaching device 96 and the desired positioning of the parts.

[0012] The invention, within its essentiality, could be put into practice in other ways of performance that differ in detail from the one indicated as an example in the description, and which could also reach the protection claimed. It could, therefore, be built in any shape and size with the most suitable materials and means as the whole set forms parts defined by the scopes of the appending claims.

Claims

1. Portable workbench, intended to facilitate in situ mechanical operations upon items intended to be worked upon
said workbench comprising:

a carrying structure (1), a supporting table top (2) and a vertical support structure (3),

said vertical support structure (3) being removably attachable at the lower end (31) thereof to both said carrying structure (1) and table top (2);

a horizontal arm structure (5, 6, 7), which is removably attachable to the upper end of said vertical support structure,

said horizontal arm structure (5, 6, 7) being adapted to movably hold the parts intended to be worked upon,

characterized in that,
said horizontal arm structure comprising:

a first block (5), a second block (7) and two intermediate rods (6),

said first block (5) having a vertical opening (51), for removable attachment to the upper end of said vertical support structure (3) and two horizontal openings, for slidably receiving said two rods (6),

said second block (7) being adapted to form a fixation means which comprises an attachment arm (9) having an "L"-shaped profile, with a smaller vertical section (92) being attached to a rectangular opening (71) on said block (7) by means of a horizontal pin (10) inserted into a transverse coaxial opening 72 on said block (7), and

a larger horizontal section (93) which co-acts with an eccentric mechanism formed by a rod (73) protruding from said second block (7) and a rounded eccentric (8) provided with an operating arm (81), which is adapted to co-act when in use with said larger horizontal section (93),

so that said horizontal arm structure can support the items intended to be worked upon.

2. Portable workbench, according to claim 1,
characterized in that,
said carrying structure (1) includes a rectangular framework (11) having means (13) for supporting the table top (2) and for removably attaching said vertical support structure (3).

3. Portable workbench, according to claim 1,
characterized in that,
said vertical support structure (3) comprises a carrying rod with its lower end having a screw thread section (31) for removable attachment to said carrying structure (1) with said carrying rod being further surrounded by a helicoidal spring (34) that assists in positioning said horizontal arm structure into an elevated position relative to said table top (2).

Ansprüche

1. Tragbare Werkbank zur Erleichterung der Durchführung mechanischer Arbeitsvorgänge in situ an zu bearbeitenden Werkstücken, bestehend aus:

einer Tragstruktur (1), einer oberen Tischplatte (2) und einer vertikalen Haltestruktur (3),

wobei die genannte vertikale Haltestruktur (3) an ihrem unteren Ende (31) sowohl mit der genannten Tragstruktur (1) wie auch mit der oberen Tischplatte (2) lösbar verbunden werden kann,
einer horizontalen Armstruktur (5, 6, 7), die am oberen Ende der genannten vertikalen Haltestruktur lösbar befestigt werden kann,
wobei die genannte horizontale Armstruktur (5, 6, 7) so ausgelegt ist, dass sie die zu bearbeitenden Werkstücke beweglich festhalten kann,
dadurch gekennzeichnet,
dass die genannte horizontale Armstruktur aus aus einem ersten (5) und einem zweiten Block (7) sowie zwei Zwischenstäben (6) besteht,
wobei der erste Block (5) eine vertikale Öffnung (51) zur lösbaren Befestigung desselben am oberen Ende der vertikalen Haltestruktur (3) und zwei horizontale Öffnungen zur verschiebbaren Aufnahme der beiden Stäbe (6) aufweist,
wobei der zweite Block (7) so ausgelegt ist, dass er ein Befestigungsmittel bildet, das aus einem Befestigungsarm (9) mit (L)-förmigem Profil mit einem kürzeren vertikalen Abschnitt (92) besteht, der in einer rechteckigen Öffnung (71) dieses Blocks (7) mit Hilfe eines horizontalen in eine in diesem Block (7) vorhandene koaxiale, transversale Öffnung (72) eingeführten Stiftes (10) befestigt wird, und
mit einem längeren horizontalen Abschnitt (93), der mit einer Exzentervorrichtung in Wechselwirkung steht, welche aus einem aus diesem zweiten Block (7) hervorragenden Stab (73) und einem abgerundeten, mit einem Betätigungshebel (81) ausgestatteten Exzenter (8) gebildetet wird, wobei dieser Betätigungshebel so ausgelegt ist, dass er bei seiner Betätigung mit dem genannten längeren horizontalen Abschnitt (93) zusammenarbeitet,
so dass die horizontale Armstruktur die zu bearbeitenden Werkstücke, halten kann.

2. Tragbare Werkbank nach Anspruch 1, dadurch gekennzeichnet, dass die Tragstruktur (1) einen rechteckigen Rahmen (11) mit Mitteln (13) zum Tragen der oberen Tischplatte (2) und zur lösbaren Befestigung der vertikalen Haltestruktur (3) aufweist.

3. Tragbare Werkbank nach Anspruch 1, dadurch gekennzeichnet, dass die vertikale Haltestruktur (3) einen Trägerstab umfasst, dessen unteres Ende einen Gewindeabschnitt (31) zur lösbaren Befestigung an dieser Tragstruktur (1) aufweist, wobei dieser Trägerstab zusätzlich von einer Schraubenfeder (34) umgeben ist, die mithilft die genannte horizontale Armstruktur in einer gegenüber der oberen Tischplatte (2) erhöhten Position festzuhalten.

Revendications

1. Établi portatif, conçu pour faciliter les opérations mécaniques in situ sur des éléments devant être ouvrés, qui comprend:

une structure de soutien (1), une table supérieure de support (2) et une structure de support verticale (3);

ladite structure de support verticale (3) est démontable et peut être accouplée à l'extrémité inférieure (31) de celle-ci, tant à ladite structure de support (1) qu'à la table supérieure (2);

une structure à bras horizontal (5, 6, 7) démontable pouvant être accouplée à l'extrémité supérieure de ladite structure verticale de support;

ladite structure à bras horizontal (5, 6, 7) est dotée d'une capacité de mouvement et conçue pour supporter les pièces devant être ouvrées,

caractérisé en ce que
ladite structure à bras horizontal comprend:

un premier bloc (5), un second bloc (7) et deux tiges intermédiaires (6),

le premier bloc (5) est constitué d'une ouverture verticale (51) pouvant être accouplée et désaccouplée de l'extrémité supérieure de ladite structure de support vertical (3) et de deux ouvertures horizontales dans lesquelles viennent coulisser les deux tiges (6),

le second bloc (7) est adapté de manière à former un moyen de fixation comprenant un bras d'accouplement (9) doté d'un profil en forme de (L), avec une section verticale plus courte (92) fixée à une ouverture rectangulaire (71) dudit bloc (7) au moyen d'une broche horizontale (10), insérée dans une ouverture transversale coaxiale (72) sur ledit bloc (7), et

une section horizontale plus longue (93) qui coopère avec un mécanisme excentrique, constitué d'une tige (73) dépassant dudit second bloc (7), et un excentrique arrondi (8) doté d'un bras opérationnel (81) adapté de manière à coopérer lors de son utilisation avec ladite section horizontale plus longue (93),

ainsi, ladite structure à bras horizontal peut supporter les pièces devant être ouvrées.

2. Établi portatif, selon la revendication 1, caractérisé en ce que ladite structure porteuse (1) comprend une armature rectangulaire (11) munie d'éléments (13) destinés à soutenir la table supérieure (2) et à accoupler ladite structure de support verticale démontable (3).

3. Établi portatif, selon la revendication 1, caractérisé en ce que ladite structure de support verticale (3) comprend une tige porteuse dont l'extrémité inférieure est dotée d'une section filetée (31) venant s'accoupler à ladite structure porteuse démontable (1) ; ladite tige porteuse étant, en plus, entourée d'un ressort hélicoïdal (34) aidant à surélever ladite structure à bras horizontal par rapport à ladite table supérieure (2).

Drawing