CN1520769A - Mechanical device particularly for moving the seat and backrest of a chair - Google Patents

Abstract

A mechanical device, comprising a single plate that is connectable under a chair and with which an actuation rod can be associated transversely for the combined rotation and translational motion of an intermediate element pivoted inside a box-like body that is partially accommodated at a first seat formed below the single plate, the box-like body being associable with a central column and interacting with oscillation compensators that interact with the single plate.

Description

Be particularly useful for moving the seat of a chair and the mechanical device of backrest

Technical field

The present invention relates to a mechanical device, be particularly useful for the motion of a chair.

Background technology

Use a mechanical device known type, that be commonly referred to rocker at present, it comprises one first plate under the lower surface that can be connected chair.

Described first plate has laterally and two first outstanding down shoulders, makes to form an inner space that holds one second plate; Second plate is less and roughly take the shape of the letter U, and makes to form two second shoulders.

Especially, second plate is pivoted to first plate with a pivot, and this pivot is along the centerline that laterally roughly is arranged on first and second shoulders, and this plays the effect of the mechanism that is limited in the mutual oscillating stroke between first and second plates.

The swing compensation mechanism links to each other with second plate of position forwardly, and this swing compensation mechanism comprises pair of shells, holds a spring between this is to housing; Described spring can chair backward between shaking peroid by prestrain.

This compensation mechanism also comprises a tractive member that is coaxially set with this spring, be used to be connected in first plate.

Especially, this tractive member has the head that can be arranged in abutting connection with the upper surface of first plate, and a bar links to each other with this head; Described bar is by being formed on the first a plurality of suitable holes in first and second plates, make be contained in the leader in a nut link to each other, this handle is arranged on the outside of housing lower half.

On this bar and this nut, be processed with screw thread, thereby the rotation of handle produces the translation of this nut along the bar of tractive member, therefore make spring generation compression between the two housings.

At the rear of compensation mechanism, also have one the 3rd plate to link to each other with second plate; The 3rd plate also roughly takes the shape of the letter U and two the 3rd shoulders that are provided with the lower surface that is used to contact second plate.

The second and the 3rd plate has one second hole and one the 3rd hole that forms along same axis respectively, and this has constituted a hole of the upper end that is used to hold a newel, and this newel is used to support this chair.

The newel of the mechanical device of one known type holds a cylinder, controls the stroke of this cylinder by driving a upper knob.

Can drive this knob with the rotation that can put on a bar selectively by the user, this bar can be with respect to this mechanical device laterally with near flatly being pivoted.

Especially, this bar is set makes by two the 4th holes and a notch and one the 5th hole, these the 4th holes laterally are formed in second shoulder, and this notch and the 5th hole all are formed in first shoulder.

Like this, the free end that the moving axially of this bar causes it is with the disengaging in the 5th hole or engage, and relative second plate with chair of first plate and newel are freely swung or does not swing.

The shortcoming of the mechanical device of this known type is that design is used for preventing to point first shoulder that unexpectedly inserts this mechanism and can not get sufficient safety guarantee through the chair shaking peroid chien shih user that is everlasting.

Another shortcoming is: for mechanical device that this known type is provided to guarantee excellent mechanical intensity, used very thick plate, for example 3 millimeters or more than.

This need use a lot of materials, steel normally, and therefore need sizable expense, and cause the gross weight of this invention bigger.

Another shortcoming of known type is that the machining of this mechanical device is complicated especially, and this is because it requires to weld between the second and the 3rd plate usually.

Another significant drawbacks is the tractive member must be inserted in first hole before the assembling compensation mechanism, and this causes the increase of another expense, and makes structure become quite complicated.

Summary of the invention

Target of the present invention is by a mechanical device that provides permission to wave chair the most safely, avoids injuring the danger of pointing in the mechanism that unexpectedly is clipped in described device owing to pointing, and addresses the above problem, and eliminates the shortcoming of above-mentioned prior art.

Among this target, an object of the present invention is to provide a device, this device is the quantity by reducing the part number adopted and material and make the reduction manufacturing cost by improving machining efficient preferably.

Especially, an object of the present invention is to make said apparatus very strong very light again, this mainly is owing to reduced gross weight and used thin material.

Another free-revving engine provides a device, and this device allows can randomly carry out assembling rapidly and effectively compensation mechanism after its assembling.

Another purpose is by drive rod is set best, so that be reduced at the driving of being carried out under user's effect to this device.

Another purpose provides a machine-made device simple in structure and can enough known types.

Significantly this target and these and other objects of can becoming more will available following characteristics mechanical device realization: this mechanical device comprises the individual plates that is connected under the chair and a drive rod that can laterally be connected with this plate, the rotation and the translation of the combination of a middleware that is used in a box-like body, pivoting, this box-like body partly is contained in one first bottom that forms below of described individual plates, described box-like body links to each other with a newel and interacts with the swing compensation mechanism, and swing compensation mechanism and described individual plates interact.

Description of drawings

From following specific but be not being described in detail of unique embodiments of the invention to one by the non-limitative example the accompanying drawing, can clearer understanding further characteristics of the present invention and advantage.These accompanying drawings are:

Fig. 1 is the exploded perspective view according to mechanical device of the present invention;

Fig. 2 is the face upwarding stereogram of individual plates;

Fig. 3 is the sectional elevation along a broken line of individual plates;

Figure 4 and 5 are the upward views that have at this mechanical device of the bar of two diverse locations;

Fig. 6 to 8 is the multiple views that have this mechanical device that is arranged on the bar in the position that stops swing;

Fig. 9 to 11 is the multiple views that have this mechanical device that is arranged on the bar in the position that freely swings;

Figure 12 and 13 is side partial cross-sectional that this mechanical device of two steps inserting compensation mechanism is shown;

Figure 14 and 15 is the vertical views that do not have individual plates and have this mechanical device of the bar that is arranged on two diverse locations;

Figure 16 is provided with the stereogram that is used for by this mechanical device that stops the additional structure that locks this plate;

Figure 17 and 18 and Figure 14 and 15 similar, they show about by the described additional structure during stopping the driving that locks this plate.

The specific embodiment

In following all embodiment, relevant with some special case and in fact some individual characteristics that provide can exchange with other the different feature that is present among other embodiment.

And, should be noted that anyly in obtaining the process of patent be not understood that it is the content that patent requires by known things, but the things of abandoning.

Consult accompanying drawing, label " 1 " expression is particularly suitable for a mechanical device of the motion of a chair.

Mechanical device 1 comprise be roughly rectangle and for example can be connected a individual plates 2 under the chair with a plurality of screw (not shown), these screws pass each notch all bights, that always represent with label " 3 " that is formed on plate 2.

One substantially elliptical flange 4 is outstanding downwards in the neighboring area of individual plates 2, and the cross section of this flange is the band rounded triangle substantially.

Flange 4 roughly the middle part of plate 2 and below form one first base 5, be used for holding a box-like body 6, this box-like body links to each other with a newel 7 (showing its part at Fig. 1) that is used to support chair.

Especially, box-like body 6 has and is approximately flat and an oval-shaped bottom 8, outstanding one hollow and the primary circle tubular bar 9 downwards from this bottom, in an off-centered position; This bar can be contained in the cavity 10 of the complementary shape that the upper end of newel 7 axially forms.

One lateral lip of label " 11 " vertically laterally is formed at described flange with 8, two opposed facing first hole 12a in bottom and the 12b that all border district protrude in box-like body 6.

Should preferably be formed in the lateral lip 11 the first hole 12a and 12b, so that allow the location to be used to support two the relevant sleeve 13a and the 13b of a transverse pivot 14 along an axis of the longitudinal centre line of axis that is approximately perpendicular to bar 9 and box-like body 6.

Described pivot roughly is arranged on the central axis place transverse to box-like body 6.

Transverse pivot 14 has the free end of label " 14a " and " 14b " expression, this two free end always protrude in outside sleeve 13a and the 13b and be contained in represent by label " 15a " and " 15b " each in second hole, each is formed in the flange 4 of individual plates 2 along the axis identical with pivot 14 second hole.

Like this, individual plates 2 pivots by the relative box-like body 6 of an axis of pivot 14.

Shown in Fig. 6 and 9, when from lateral observation, the lateral lip 11 of box-like body 6 last week the edge shape preferably form slightly as " V " who puts upside down, the summit of " V " roughly is positioned on the pivot 14, thereby is formed for first and second flat part 11a and the 11b of the oscillating stroke of confinement plate 12 relative box-like body 6.

Like this, can form one first not turned position and one second rotated the position, first not turned position plate 2 be shelved on the first flat restriction stroke part 11a (Fig. 6 to 8); Rotating location plate 2 second is shelved on the second flat restriction stroke part 11b (Fig. 9 and 10).

One bar of label " 16 " expression also can laterally link to each other with box-like body 6 with plate 2, this bar comprise roughly straight and be positioned on the same axis and by interconnective first and second part 16a and the 16b of a third part 16c, this third part is roughly C shape and is contained in box-like body 6 inside.

Short 16a of first and long second portion 16b can pass a pair of the 3rd hole of being represented by label " 17a " and " 17b " respectively, should be formed in the box-like body 6 axis of the 3rd hole, and be provided with in the opposite direction with respect to bar 9 along the axis that is basically parallel to pivot 14.

In addition, second portion 16b gives prominence to outside at mechanical device 1 by one first groove in the flange 4 that is arranged on plate 2 or the part 18 of flattening, this second portion is connected to one the 4th part 16d in its outer end, the 4th part be tilt and be connected in leader 19.

Shown in Figure 4 and 5, bar 16 can carry out the axial translation motion of the predetermined length between two end positions, one of them end position is that the 16a of first almost completely is contained in the box-like body 6 (Fig. 4), another end position is that the 16a of first is arranged in one second groove or the part 20 of flattening, this second groove or the part and first of flattening flatten part 18 relative be formed in the flange 4 and more shallow than described first.

Like this, the determining positions of bar 16 free degree of individual plates 2 relative box-like body 6; In the time of in the 16a of first is contained in box-like body 6, plate 2 can freely rotate counterclockwise, forwards the second place of Fig. 9 to from the primary importance of Fig. 6.

Vice versa, begin and place second to flatten in the part 20 16a of first of bar 16, plate 2 is pinned by the stopping mutually of flange 4 of 16a of first and plate 2 from the primary importance of Fig. 6.

The 16a of first of bar 16 and the part 20 of flattening form and are adapted to pass through that relative box-like body 6 stops and the structure of pinning this plate.

Bar 16 also allows to be set at middleware 21 translation vertically and a partial rotational of box-like body 6 inside.

It is one subtriangular that middleware 21 is rendered as in plane, this triangle form be arranged on a basic side 21a of pivot 14 places, parallel its axis and be oppositely arranged with this base side and towards the top 21b of the C of bar 16 shape third part 16c.

Especially, in middleware 21, near and be parallel to basic side 21a and be useful on the fourth hole 22 that transverse pivot 14 is passed through, thereby provide middleware 21 to move pivotally.

Have one to be roughly parallel to the transverse notch 23 that pivot 14 forms near top 21b, be used for holding partly, rotationally third part 16c.

Like this, bar 16 produces the rotation of middleware 21 around pivot 14 around the rotation of the axis of the first and second part 16a and 16b.

Especially, when mentioning handle 19, third part 16c and top 21b rotate, make and contact pressurization applying between projection 21c below presetting at one of middleware 21 and the button 24, this button 24 usefulness labels " 25 " expression, and place, the top of a cylinder of the known type in being contained in newel 7 is outstanding.

Button 24 has constituted the structure that drives cylinder 25, therefore allows the user to change the distance of chair built on stilts.

Give prominence to below box-like body with swing compensation mechanism label " 26 " expression, that be used to compensate its swing with individual plates 2, and roughly relative with respect to the bar 9 of a roughly consistent axis and box-like body 6 with the axis of pivot 14.

Compensation mechanism 26 comprises that they are interrelated, make to form the container with a basic elliptical shape by one the first half housing of label " 27 " and " 28 " expression and one the second half housing.

That relative second, top half housing 28 is installed in lower position and have larger-diameter the first half housings 27 and be provided with one the 5th axially extending bore 29 that is connected to one second hole 30, this hole externally and bigger, design is used for holding the nut 31 of a female complementary shape.

The complementary threads end with label " 32a " expression of drawing piece 32 can link to each other with nut 31; Described drawing piece partly is contained in the first half housings 27 and the second half housings 28 and is outstanding by one the 6th upper aperture 33.

That drawing piece 32 has a T shape roughly and give prominence to a head 32b on the 6th hole; This head 32b can be by one first notch 34 in the bottom 8 that is formed on box-like body 6 in when assembling, and this notch is roughly relative with the position of bar 9 and along the vertical central axis line formation of box-like body 6.

This head 32b also can by with above-mentioned notch roughly mutually Sihe in individual plates 2, along one second notch 35 of same axis.

One the 3rd hole 36 that is used to hold head 32b is arranged on the upper surface of plate 2 and transverse to second notch 35, so that the connection of the picture bayonet (bayonet-like) that can not rotate of 32 pairs of plates 2 of drawing piece is provided in advance.

Like this, drawing piece 32 also plays a part to be used to connect a part of compensation mechanism 26 and plate 2.

By with the first half housings 27 and with the interaction of nut 31, drawing piece 32 also allows to regulate for example decrement of an elastically deformable spare of a helical spring 37 be usually located between one first ring washer 38a and the one second ring washer 38b, and this two packing ring is installed in respectively again in the first and second half housings 27 and 28.

In fact the rotation of the first half housings 27 causes that nut 31 moves axially along the complementary threads end 32a of drawing piece 32, causes the first packing ring 38a to move towards the second packing ring 38b, and the decrement that increases or reduce spring 37.

Between the operating period, the result of the swing of plate 2 relative box-like body 6 has finished the driving to spring 37 at chair; Especially, the user chair is rotated backward during (counterclockwise until the position that arrives Fig. 9) to springs preload.

Then, in case when no longer applying the power that generation swings backward, spring 37 just clockwise rotates, and drives the home position that chair turns back to Fig. 6.

The first half housings 27 have changed the decrement of spring 37 relative to rotating of drawing piece 32, therefore also cause the changes of properties of compensation mechanism 26 aspect the swing of control panel 2 relative box-like body 6.

By plate 2 is cut, then make it be subjected to local deformation, can advantageously obtain second notch 35, so that form a bridging part 39, this bridging part constitutes the restriction stroke part for drawing piece 32.

If stress on the first half housings 27 towards the second half housings 28, between the head 32b of drawing piece 32 and bridging part 39, produce actual contact, so just avoided damaging the lower surface (not shown) of chair.Can obtain individual plates 2 and box-like body 6 by the punch process that begins by a metallic plate; Processing type makes from limited thickness with the configurations that are all concrete selections extremely compact and that do not have weakness zone substantially, and the metallic plate of for example about 2-2.5 millimeter begins to provide the present invention, and this has remarkable economic efficiency.

Therefore, operate as follows: consult all accompanying drawings, the user moves and drives it by making bar produce one, thus produce the 16a of first and second flatten part 20 optionally with temporary transient interconnecting, make the chair swing or do not swing.

In addition, the user can act on the handle 19 of bar 16, the rotation that promotes it and cause described bar.

This drives the button 24 of cylinder 25 by third part 16c, so can regulate the height of chair built on stilts.

Handle 19 is given prominence in the place ahead of bar 16, therefore with respect to the user in side direction, thereby be easy to contact it, institute is so that the operation of driving cylinder.

This is because such situation: it unlike the prior art, with respect to the axis by first and second parts, the 4th part 16d that is used to connect handle is left in the sensing of third part 16c.

Yet, having been found that the present invention has finished predeterminated target and all purposes, a mechanical device that is provided makes and is easy to regulate chair and have maximum security.

This mainly is because such situation, and shape of the present invention is included in an individual plates that all holds the top edge of box-like body in each step of swing.

And the spacing between box-like body and each base is all very little, is enough to make user's finger to stretch into unexpectedly or be sandwiched in this mechanism in no instance.

By punch process the present invention, like this, do not need to be welded to each other the operation of member.

In addition, the simplification as the part assembly manipulation of the insertion of bayonet that has reduced the quantity of part and for example T shape drawing piece has produced assembling faster and production stage and has organized the optimization of stock deposit.

These technical schemes and others cause the remarkable decline of manufacturing cost, keep this mechanical device intensity constant at least simultaneously.

Simultaneously, the present invention has the advantage than light weight, and this mainly is because the efficient of having used thin material and having improved used part.

Certainly, the present invention has been easy to numerous modifications and variations, and all such modifications and variation all are in the scope of appended claims.

Employed material and the size that constitutes each member of the present invention certainly with the particular requirement close association.

Multiple structure above-described and the execution difference in functionality that claims define does not need necessarily to exist simultaneously or exist only in the illustrated embodiment, but can adopt in essence in all different embodiment of the chair mechanism different with illustrated embodiment.

Figure 16,17 and 18 shows to be adapted to pass through and stops and the additional structure of lockplate 2; Described latch-up structure is made of a lever or lock latch parts 40, this lock latch parts is L shaped substantially, thereby form one first alar part 41 and one second alar part 42, this both wing portions is positioned at same level and is provided with a locking pivot 44 at join domain, this locking pivot obtains in punch process, it is given prominence under block piece 40, is used for respect to the described lever of box-like body 6 pivots.

In fact, locking pivot 44 is accommodated in suitable seat 45 places, hole, and this hole is formed on the bottom 8 of box-like body 6 in the zone of contiguous the 3rd hole 17b, and the 3rd hole is positioned at opposite side with respect to first notch 34.

The free end of first alar part 41 is substantially transverse to box-like body 6 when inoperative, this free end has a tooth 46, is stopping that the sensing that latch-up structure is in this tooth under the off position is along be roughly an axis longitudinally with respect to box-like body.

Projection 47 is along outstanding at the free end of second alar part 42 perpendicular to a plane of described alar part, and can be arranged on and be formed at a suitable octal place that is placed in the top middleware 21.

Tooth 46 is towards the adjacent transverse flange 11 of box-like body 6; Near the above tooth of described lateral flange the cotter way of milling mouth 49 is arranged, this mills the cotter way mouth and is suitable for allowing tooth 46 to be free to slide within it, is projected into the outside of lateral flange 11 up to it.

Shown in Figure 17 and 18, the 16a of first of described bar is placed second motion of flattening the bar 16 within the part 20, also and by the rotation that the projection 47 and the interaction of octal 48 in being formed on middleware 21 give lever 40 match.

Like this, tooth 46 is given prominence to and is being milled outside the cotter way mouth 49, and a suitable office, location division that is engaged on that individual plates 2 places form, thereby further locks its motion.

Claims (30)

1. a mechanical device, it is characterized in that, it comprises an individual plates (2) that can be connected under the chair, one drive rod (16) can laterally be associated with this plate, be used for and the rotation and the translation of the combination of the inner middleware (21) that is pivoted of box-like body (6), this box-like body is accommodated in one first base (5) that forms below of described individual plates (2) partly and locates, described box-like body (6) can link to each other and swing compensation mechanism (26) and interact with a newel (7), swing compensation mechanism and described individual plates (2) interact.

2. a mechanical device, it is characterized in that, it comprises an individual plates (2) that can be connected under the chair, one drive rod (16) can laterally be associated with this plate, be used for and the rotation and the translation of the combination of the inner middleware (21) that is pivoted of box-like body (6), this box-like body is accommodated in one first base (5) that forms below of described individual plates partly and locates, described box-like body (6) can link to each other and swing compensation mechanism (26) and interact with a newel (7), swing compensation mechanism and described individual plates (2) interact, and be can be coupled by bayonet type connection (32b, 36) mode.

3. or the multinomial mechanical device that requires according to aforesaid right is characterized in that, described first base (5) forms with described box-like body complementary substantially, and first base forms from the outstanding downwards flange (4) of described individual plates (2) periphery by one.

4. according to the mechanical device of claim 1 and 3, it is characterized in that basic described flange (4) for ellipse is to have rounded triangle substantially in plane in cross section.

5. or the multinomial mechanical device that requires according to aforesaid right, it is characterized in that, it is flat and an oval-shaped bottom (8) substantially that described box-like body (6) has, be used to be connected to a hollow connecting rod (9) of described newel (7), outstanding downwards from this bottom in an off-centered position.

6. according to the mechanical device of claim 1 and 5, it is characterized in that, it comprises the vertical outstanding lateral lip (11) of described bottom (8) periphery from described box-like body (6), this flange in use points to, two first support holes (12a for a pivot (14), 12b) laterally be formed at described flange (11), this pivot is used for the mutual pivot of described box-like body (6) and described individual plates (2).

7. according to the mechanical device of claim 1 and 6, it is characterized in that, described two first hole (12a, 12b) face mutually and be formed in the described lateral lip (11) along an axis that is basically perpendicular to described bar (9) axis and described box-like body (6) longitudinal center axis, with admittance be used for described transverse pivot (14) two bearing sleeves (13a, 13b).

8. according to the mechanical device of claim 1 and 7, it is characterized in that, free end (the 14a of described pivot, 14b) protrude in described sleeve (13a, 13b), make along the axis identical with described pivot (14) be contained in the second paired hole among the described flange (4) that is formed on described individual plates (2) (15a, 15b) among.

9. or the multinomial mechanical device that requires according to aforesaid right, it is characterized in that, described drive rod (16) comprises a first (16a) and a second portion (16b), these two parts are straight basically, be positioned on the identical axis, and interconnect by one the 3rd C shape part (16c), wherein said third part (16c) is contained in the inside of described box-like body (6), makes with described middleware (21) to interact.

10. according to the mechanical device of claim 9, it is characterized in that, the described first and second part (16a, 16b) along an axis that is parallel to described pivot (14) axis by being formed on two the 3rd hole (17a that form in the described box-like body (6), 17b), these two the 3rd holes are formed on the opposite side with respect to described bar (9), wherein said individual plates (2) comprises first (18) and second (20) groove or the part of flattening that is formed in the described flange (4), so that hold described first and second parts (16a, 16b).

11. the mechanical device according to claim 1 and 10 is characterized in that, described first groove or the part (18) of flattening are darker than described second groove or the part (20) of flattening, thereby allow described individual plates (2) to freely swing with respect to described box-like body (6).

12. mechanical device according to claim 1 and 11, it is characterized in that, described second groove or the part (20) of flattening are more shallow, thus guarantee described first be contained in described second groove or the part of flattening in the time temporary transient locking described box-like body (6) and described individual plates (2) mutual swing.

13. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, have one in the plane of described middleware (21) near leg-of-mutton shape, this triangle locates to form a bottom side (21a) at the described pivot (14) of the axis that is parallel to it, and formation relative with described bottom side (21a) and towards the top (21b) of described the 3rd C shape part of described drive rod (16).

14. the mechanical device according to claim 1 and 13 is characterized in that, described middleware (21) have be parallel to described bottom side (21a) and with its near a fourth hole (22) that forms, so that partly and rotationally hold described pivot (14).

15. mechanical device according to claim 1 and 14, it is characterized in that, described middleware (21) has a transverse notch (23) that is roughly parallel to described pivot (14) near described top (21b), so that partly and rotationally hold the described third part (16c) of described drive rod (16).

16. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, described drive rod (16) is around the described first and second part (16a, the rotation of axis 16b) produces the rotation of described middleware around described pivot (14), thereby handles the driving that is contained in the cylinder (25) in the described newel (7).

17. mechanical device according to claim 1 and 16, it is characterized in that, it comprises the leader who is connected with end described drive rod that can be raised, make to from described middleware (21) outstanding downwards one preset projection (21c) and the contact given prominence between the button (25) on the described cylinder (25) is exerted pressure.

18. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, described swing compensation mechanism (26) comprises one the first half housing (27) and one the second half housing (28), this two housings can be interrelated to form an avette substantially container, be used to hold an elastically deformable spare, a spring (37) for example, with this strain part coaxial line a drawing piece (32) arranged, its described the first half housing (27) and described individual plates (2) that are used to interconnect, wherein said drawing piece (32) has an end of thread (32a) and a basic T shape head (32b), this end of thread links to each other with the nut (31) of a complementation, this nut is associated with described the first half housings (27), and this T shape head process goes out on described individual plates (2).

19. mechanical device according to claim 1 and 18, it is characterized in that, the bar of described drawing piece (32) is provided with to such an extent that make it pass one the 6th hole (33) that is formed on described the second half housings (28), and described head (32b) is provided with to such an extent that make in its one first notch (34) in being formed at the described bottom (8) of described box-like body (6) and pass through.

20. mechanical device according to claim 1 and 19, it is characterized in that, the head (32b) of described drawing piece (32) be provided with make it by to described first notch (34) roughly similar and be formed on one second notch (35) in the described individual plates (2) along same axis.

21. the mechanical device according to claim 1 and 20 is characterized in that, forms described first and second grooves (34,35) along the same axis that is parallel to described box-like body (6) longitudinal centre line.

22. one or multinomial mechanical device according to aforesaid right requires is characterized in that described first and second notches (34,35) are longer than the transverse arm of the described T shape head (32b) of described drawing piece (32), so that described head (32b) is passed through.

23. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, described individual plates (2) has the 3rd a vertical groove (36) that forms along the horizontal direction with respect to described second notch (35) at its upper surface, so that hold the described T shape head (32b) of described drawing piece (32), make between described drawing piece (32) and described individual plates (2) to connect for the bayonet type of not rotating.

24. one or multinomial mechanical device according to aforesaid right requires is characterized in that, can be connected with described individual plates (2) at assembling described compensation mechanism (26) described afterwards compensation mechanisms (26).

25. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, it comprises a bridging part (39), by cutting in described individual plates (2) and make its local deformation form described second notch (35), thus form project upwards with the described bridging part (39) that constitutes for a restriction stroke part of described drawing piece (32).

26. one or multinomial mechanical device according to aforesaid right requires is characterized in that, form described box-like body (6) and described individual plates (2) by punching press one single piece of metal piece punching press.

27. one or multinomial mechanical device according to the aforesaid right requirement, it is characterized in that, it comprises and is used for the additional structure that locks described individual plates (2) by stopping, constitute described additional latch-up structure by a L shaped lever or lock latch parts (40), this lever or lock latch parts (40) comprise and are arranged in first alar part of 1 on the same level (41) and one second alar part (42) and at the pivot (44) that forms by punching press that has of join domain, this pivot is outstanding below described lock latch parts or lever (40) at least, be used for described lock latch parts or lever pivots are arrived described box-like body (6), described pivot (44) is contained in the described base portion (8) that is formed on described box-like body (6), with described first notch (34) opposite side on, in a suitable seat hole (45) in the contiguous zone, described the 3rd hole (17b).

28. device according to claim 27, it is characterized in that, the free end of described first alar part (41) is configured to when inoperative transverse to described box-like body (6), this free end has a tooth (46), this tooth is along being an axis longitudinally for described box-like body (6) in described additional sensing when stopping that latch-up structure (40) is inoperative, free end at described second alar part (42), the outstanding projection (47) along a perpendicular plane, the suitable octal (48) in the engageable middleware (21) on be formed at described being placed on of this projection is located.

29. device according to claim 27 and 28, it is characterized in that, described tooth (46) is in the face of the described adjacent transverse flange of described box-like body (6), one mills cotter way mouth (49) is formed on the described lateral flange near described tooth (46), and the described cotter way mouth (45) that mills is suitable for allowing described tooth (46) to be free to slide therein until this tooth giving prominence to outside in described lateral flange.

30. according to claim 27,28 and 29 device, it is characterized in that, described bar (16) is placed on the described second part motion in (20) of flattening with its described first (16a) and is matched by the rotation that gives described lever or lock latch parts (40), the rotation of this lock latch parts makes described tooth (46) place described milling outside the cotter way mouth (49), a suitable adjacent part that makes that its engagement is arranged on that described individual plates (2) locates is with its motion of further locking.

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