CN203471305U

CN203471305U - Supporting tool

Info

Publication number: CN203471305U
Application number: CN201320546902.6U
Authority: CN
Inventors: 施斌; 姚思捷
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2013-09-04
Filing date: 2013-09-04
Publication date: 2014-03-12
Anticipated expiration: 2023-09-04

Abstract

The utility model relates to a supporting tool comprising a casing 1, a gear and rack mechanism 2, a moment arm rocker 3 and a spring pawl structure 4. The casing 1 is a casting, and the gear and rack mechanism 2 is mounted inside the casing 1. The gear and rack mechanism 2 is a spur-gear and rack mechanism and comprises a gear 21 and a rack 22 meshing with each other. The moment arm rocker 3 is mounted in a center hole of the gear 21. The spring pawl structure 4 is arranged on the casing 1 to correspond to the gear 21. During operation, the moment arm rocker 3 is turned to drive the gear 21 to rotate to drive the rack 22 to slide from an outlet of the casing 1 so as to strut an object, the spring pawl structure 4 locks the gear and rack mechanism 2 until the object is strutted to the position as needed so that the rack is prevented from being pressed back by the object; after the assembling process is finished, the spring pawl structure 4 is released, the moment arm rocker 3 is turned to drive the gear 21 to rotate to drive the rack 22 to reset.

Description

A kind of supporting tool

Technical field

The utility model belongs to the aid field of automobile assembling, is specifically related to a kind of supporting tool.

Background technology

In all trades and professions, often can need to use external force that two objects are strutted, so that the gap between mounting arrangements or adjusting object.The for example assembling of automobile chassis bush, if panel beating gap surplus causes lining interference not, cannot mounting bush, if make with the hands to go to break into two with one's hands not only sweat but also be inconvenient to work of panel beating, at this moment need, with aid, panel beating is strutted to assemble lining, because application of force space is less, aid volume can not be too large.In industry manufacture, also can run into the orientation problem of parts, at this moment also need to, by force application means and the fitted position of can controlling well, also can often run into Similar Problems in daily life.

Summary of the invention

In order to solve the technical problem of above-mentioned existence, the utility model has designed a kind of supporting tool.

In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:

A kind of supporting tool, it is characterized in that: comprise shell (1), pinion and rack (2), driving mechanism and lockable mechanism, pinion and rack (2) is contained in the inside of shell (1), pinion and rack (2) comprises pitch wheel (21) and tooth bar (22), driving mechanism be contained in the centre bore of gear (21), with driven wheel tooth bar mechanism (2) work, make tooth bar (22) from shell (1) thus outlet is stretched out object is strutted, it is corresponding with gear (21) with spreadet spreadet wheel rackwork (2) after stretching out suitable displacement at tooth bar (22) that lockable mechanism is arranged on the top of shell (1).

Further, the bottom surface of tooth bar (22) is provided with slide block (221), and the bottom of shell (1) is provided with groove (11), and slide block (221) is embedded in groove (11) and slides along groove (11).

Further, in tooth bar (22) both sides, rear end, one limited block (222) is respectively set, spacing sidewall (12) cooperating on limited block (222) and shell (1).

Further, scale is carved with in tooth bar (22) side.

Further, pinion and rack (2) is spur gear rackwork.

Further, driving mechanism is arm of force handle (3), the axle of arm of force handle (3) is through gear (21) centre bore and gear (21) centre bore cooperating, and the axle rear and front end of arm of force handle (3) is rotated as supporting through the corresponding circular hole of shell (1) both sides and the circular hole of take respectively.

Further, the axle of arm of force handle (3) and gear (21) center bore inner wall coordinate by tooth slot structure, and tooth slot structure is symmetrical along axis.

Further, arm of force handle (3) is the shape and structure of " lightning fork ".

Further, lockable mechanism is spring pawl structures (4), teeth (211) cooperating of ratchet and gear (21); One end of the ratchet rotating shaft of spring detent mechanism (4) connects ratchet handle (41) so that discharge ratchet, and ratchet handle (41) is stretched in foundry goods enclosure.

Further, shell (1) is foundry goods; Shell (1) is left and right two halves formula structure, by the bolt at shell (1) edge, is assembled in aggregates.

This supporting tool has following beneficial effect:

(1) a kind of supporting tool small volume of the utility model, utilize the lever principle of pinion and rack and arm of force handle can realize by less power and support larger load, can also utilize the scale on supporting tool to carry out quantitative decision stroke size simultaneously, easy to use and use is extensive.

(2) a kind of supporting tool of the utility model is used spur gear rack-driving, and spur gear tooth bar is stable in transmission process, has the advantages such as simple in structure, transmitted power is large, efficiency is high, reliable operation, life-span length, compact conformation.

(3) a kind of supporting tool of the utility model has been considered the spacing situation of locking of tooth bar, and ratchet and spring are combined cleverly and have been realized advancing and locking of gear, after finishing using, can remove locking, easily tooth bar is regained.

(4) a kind of supporting tool of the utility model, easily realizes in technique, and simple in structure, cost is lower, successful.

Accompanying drawing explanation

Fig. 1: the contour structures schematic diagram of the utility model supporting tool;

Fig. 2: the internal structure schematic diagram of the utility model supporting tool;

Fig. 3: A place partial enlarged drawing in Fig. 1;

Fig. 4: the structural representation of limited block in the utility model supporting tool;

Fig. 5: the structural representation of pawl structures in the utility model supporting tool.

Description of reference numerals:

1-shell; 11-bottom groove; 12-spacing sidewall; 2-pinion and rack; 21-gear; 211-teeth; 22-tooth bar; 221-slide block; 222-limited block; 3-arm of force handle; 4-spring pawl structures; 41-ratchet handle.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

Fig. 1 to Fig. 5 shows a kind of supporting tool, comprises shell 1, pinion and rack 2, arm of force handle 3 and spring pawl structures 4, and shell 1 is foundry goods, and pinion and rack 2 is contained in the inside of shell 1, and pinion and rack 2 is pinion and racks always.Pinion and rack 2 comprises a pair of pitch wheel 21 and tooth bar 22, and arm of force handle 3 is contained in the centre bore of gear 21, and spring pawl structures 4 is arranged on shell 1 corresponding with gear 21.During work, thereby rotating arm of force handle 3 driven gears 21 rotates and drives tooth bars 22 to skid off object is strutted from the outlet of shell 1, until the softened displacement of object, reach after requirement, utilize spring pawl structures 4 by pinion and rack 2 lockings, prevent that tooth bar from being pushed back by object, until after assembly process completes, retracting spring pawl structures 4, thus then rotate arm of force handle 3 driven gears 21 and rotate 22 resets of driving tooth bar.

In order to apply rotating torque to gear 21, at arm of force handle 3 of gear 21 central hole break-through, arm of force handle 3 and gear 21 central hole locations coordinate by tooth slot structure, and teeth groove quantity and size design are wanted rationally and Central Symmetry distributes, to be used for transmitting the larger torque of arm of force handle 3.Through the axle rear and front end of the arm of force handle 3 at gear 21 centers, respectively through the corresponding circular hole of shell 1 both sides, and take the circular hole of shell 1 both sides and be rotated as supporting.The shape of arm of force handle 3 similar " lightning fork ", object is to reduce the application of force by increasing the arm of force, plays lever augmented effect.

In order to guarantee that pinion and rack 2 transmission direction are stable, at the bottom surface car of tooth bar 22, go out the elongated slide block 221 of a protrusion, slide block 221 be shaped as cuboid, in order to coordinate with the slide block 221 of tooth bar 22 bottom surfaces, the bottom of shell 1 has an elongated groove 11, the slide block 221 of tooth bar 22 bottom surfaces can slide along the groove 11 of the cuboid of shell 1 bottom, as shown in Figure 3.

In order to guarantee that tooth bar 22 does not come off with gear 21 when being elongated to maximum displacement, at tooth bar 22 each cars of both sides, rear end, go out the limited block 222 of a protrusion, as shown in Figure 4, the limited block 222 protruding in elongation process middle rack 22 both sides when tooth bar 22 slides and does not come in contact along the medial surface of shell 1, when tooth bar 22 is when being elongated to maximum displacement, the limited block 222 that protrude tooth bar 22 both sides will be blocked by the spacing sidewall 11 of shell 1 and can not continue to extend, the teeth of these hour rack 22 afterbodys and gear 21 engagements and not disengaging, this is also the maximum rating that tooth bar 22 can extend.Scale is carved with in tooth bar 22 sides, can carry out as required to determine quantitatively the displacement strutting when strutting object effortlessly.

Fig. 5 is spring pawl structures schematic diagram.Supporting tool needs tooth bar locking after object is strutted, prevent that tooth bar from being pushed back by object, in order to address this problem, a spring detent mechanism 4 is installed shell 1 is inner, the rotating shaft of ratchet through spring and under spring force effect by the teeth of ratchet pressed toward gear 21 211.The shape of the ratchet of spring detent mechanism 4 there are certain requirements, when transmitting gear 21 extends tooth bar 22, the contact-making surface of ratchet can slip over from each teeth 211 of gear 21 smoothly, when stopping gear 21 rotation, the teeth 211 that gear 21 is withstood at the top of ratchet can not reverse gear 21 under external force, thereby it is constant to have overcome the shift length that the power of object compression tooth bar 22 keeps tooth bar 22 to stretch out.One end of the ratchet rotating shaft of spring detent mechanism 4 connects ratchet handle 41 and stretches in foundry goods enclosure, after supporting tool uses, can turn ratchet handle 41 and overcome spring force and make ratchet top no longer withstand the teeth 211 of gear 21, thereby conveniently rotate backward gear 21, tooth bar 22 is recovered to shell 1 inside.

In order to facilitate the assemblings such as pinion and rack 2 and spring detent mechanism 4, shell 1 can be designed to left and right two halves formula, after pinion and rack 2 and spring detent mechanism 4 etc. has been assembled, by the bolt at shell 1 edge, assembled in aggregates.With lid, the outlet of supporting tool is covered to guarantee sealing when not in use.

By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technical scheme to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all in protection domain of the present utility model.

Claims

1. a supporting tool, it is characterized in that: comprise shell (1), pinion and rack (2), driving mechanism and lockable mechanism, pinion and rack (2) is contained in the inside of shell (1), pinion and rack (2) comprises pitch wheel (21) and tooth bar (22), driving mechanism be contained in the centre bore of gear (21), with driven wheel tooth bar mechanism (2) work, make tooth bar (22) from shell (1) thus outlet is stretched out object is strutted, it is upper corresponding with gear (21) with spreadet spreadet wheel rackwork (2) after stretching out suitable displacement at tooth bar (22) that lockable mechanism is arranged on shell (1).

2. supporting tool according to claim 1, is characterized in that: the bottom surface of tooth bar (22) is provided with slide block (221), and the bottom of shell (1) is provided with groove (11), and slide block (221) is embedded in groove (11) and slides along groove (11).

3. supporting tool according to claim 1 and 2, is characterized in that: in tooth bar (22) both sides, rear end, one limited block (222) is respectively set, spacing sidewall (12) cooperating on limited block (222) and shell (1).

4. supporting tool according to claim 3, is characterized in that: scale is carved with in tooth bar (22) side.

5. according to the supporting tool described in claim 1,2 or 4, it is characterized in that: pinion and rack (2) is spur gear rackwork.

6. supporting tool according to claim 5, it is characterized in that: driving mechanism is arm of force handle (3), the axle of arm of force handle (3) is through gear (21) centre bore and gear (21) centre bore cooperating, and the axle rear and front end of arm of force handle (3) is rotated as supporting through the corresponding circular hole of shell (1) both sides and the circular hole of take respectively.

7. supporting tool according to claim 6, is characterized in that: the axle of arm of force handle (3) and gear (21) center bore inner wall coordinate by tooth slot structure, and tooth slot structure is symmetrical along axis.

8. supporting tool according to claim 7, is characterized in that: arm of force handle (3) is the shape and structure of " lightning fork ".

9. according to the supporting tool described in claim 1,2,4,6,7 or 8, it is characterized in that: lockable mechanism is spring pawl structures (4) teeth (211) cooperating of ratchet and gear (21); One end of the ratchet rotating shaft of spring detent mechanism (4) connects ratchet handle (41) so that discharge ratchet, and ratchet handle (41) is stretched in foundry goods enclosure.

10. supporting tool according to claim 9, is characterized in that: shell (1) is foundry goods; Shell (1) is left and right two halves formula structure, by the bolt at shell (1) edge, is assembled in aggregates.