EP1479481B1

EP1479481B1 - Portable work bench

Info

Publication number: EP1479481B1
Application number: EP03702657A
Authority: EP
Inventors: José Antonio Tejero Lopez
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-01
Filing date: 2003-01-23
Publication date: 2010-03-24
Anticipated expiration: 2023-01-23
Also published as: DK1479481T3; DE60331816D1; EP1479481A1; WO2003064112A1; ES2200669B1; ES2200669A1; ATE461785T1

Abstract

It includes a very solid frame that supports a table top and means to vertically hold a support for an attaching device of the parts to be machined, forming a horizontal arm able to communicate three basic movements to the parts: vertical, turning on its plate with respect to the vertical axis and horizontal. Applicable for in situ performance of auxiliary and complementary work and installation operations. <IMAGE>

Description

SCOPE

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

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.
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.
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

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.
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

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

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.

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.
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

lateral arm

lever

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.
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

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.
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).
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).