DE102013101083B4 - Auxiliary tool for mounting a shock absorber - Google Patents

Abstract

An auxiliary tool for mounting a shock absorber, comprising: a holding assembly (A) disposed at one end (111) of the tubular body (11) of the shock absorber and for clamping the push rod (12) of the shock absorber; and a drive assembly (B) disposed on the support assembly (A), sliding on the push rod (12) and consisting essentially of an outer sleeve (40), an inner sleeve (50) and a rotary member (60). The outer sleeve (40) has an outer tube body (41), a guide rail (42) mounted inside the outer tube body (41), a first end portion (43) located at one end of the outer tube body (41) on the holding assembly (A) ) and a second end portion (44) disposed at the other end of the outer tube body (41). The inner sleeve (50) is movably plugged into the outer sleeve (40), wherein the inner sleeve (50) has an inner tube body (51) which can be attached to the shaft section (121) of the push rod (12) and has an external thread (511) on the outside of the inner tube body (51) adapted to the guide rail (42) adapted guide slot (52), and arranged at one end of the inner tube body (51) head portion (53) against which the nut (13) abuts, and the rotary member (60) a screw hole (61) having an internal thread (611) which exactly matches with the external thread (511) formed on the inner tube body (51) and rotatably disposed on the second end portion (44). Therefore, the holding assembly according to the invention can cooperate with the drive assembly. To operate the turning element is sufficient. In addition, it is avoided that the push rod returns to rest during operation when the rotary member is not rotated. This ensures increased safety during assembly of the shock absorber.

Description

The invention relates to an auxiliary tool or auxiliary tool set and a method for mounting a shock absorber.

Shock absorbers are used to decay different vibrations in different automobiles and various machines. When installing the shock absorber, a push rod installed in a pipe body must be pulled out so far that a major part of the push rod protrudes from the pipe body in order to mount the shock absorber.

Currently, such a pull-out is compulsory by hand, with the pulled-out push rod is attached by means of a pair of pliers or simply by hand to avoid retraction of the push rod. Because a spring disposed in the tube body is loaded simultaneously during the drawing-out operation, an extremely large restoring force is generated which acts on the push rod, so that the forced pulling-out work by hand has a relatively high safety risk.

Such conventional auxiliary tools for mounting shock absorbers are in DE 202 17 764 U1 . DE 20 2011 107 229 U1 and US 4,865,169 A described. DE 202 17 764 U1 and DE 20 2011 107 229 U1 refer to tools for pulling out a push rod of a shock absorber, the tools shown there include a tension spindle for this purpose. US 4,865,169 A discloses a clamping device for use with a gas spring which is attached to the end of the cylinder through which the piston rod passes, and which includes a clamping portion for clamping the piston rod. The clamping device has a U-shaped structure with clamping legs, which can be moved relative to each other by a bolt and nut arrangement.

The invention has for its object to provide a suitable for mounting a shock absorber auxiliary tool that can increase the safety during assembly of the shock absorber.

Another object of the present invention is to provide an auxiliary tool suitable for mounting a shock absorber, which avoids damaging the push rod of the shock absorber during pull-out.

This object is achieved with an auxiliary tool according to claim 1 and an auxiliary tool set according to claim 4 and a method according to claim 6. Advantageous embodiments are the subject of the dependent claims.

According to the invention, an auxiliary tool and an auxiliary tool set for mounting a shock absorber is provided, wherein the shock absorber a tubular body, a partially mounted inside and partly outside of the tubular body push rod, arranged on a protruding from the tubular body end of the push rod shaft portion with a threaded portion, one on the threaded portion of the shaft portion screwed nut has, while the auxiliary tool set has the following components:
a holding assembly which can be disposed at one end of the tubular body and serves for clamping or releasing the push rod; and
a drive assembly consisting essentially of an outer sleeve, an inner sleeve and a rotary member, the drive assembly being provided on the support assembly for sliding onto the push rod, and wherein the outer sleeve comprises an outer tube body, a guide rail mounted internally to the outer tube body, one at one end the outer tube body arranged on the holding assembly located, the first end portion, and disposed at the other end of the outer tube body, the second end portion, and wherein the inner sleeve is movably inserted into the outer sleeve, wherein the inner sleeve with an attachable to the shaft portion of the push rod inner tube body an external thread, a guide slot formed on the outside of the inner tube body, adapted to the guide rail, and a head portion disposed at one end of the inner tube body against which the nut is abutted, and the rotating member is egg n screw hole having an internal thread, which fits exactly to the external thread formed on the inner tube body, and is rotatably arranged on the second end portion.

According to the invention, the holding assembly may comprise two clamping jaws and two pressing units, the individual clamping jaws each comprising a contact surface, on each of which a concave clamping portion is formed, which serves for clamping or releasing the push rod, wherein both the contact surfaces and the concave clamping portions are each arranged opposite one another, and wherein the individual pressing units are arranged in each case inserted through the two clamping jaws, to set a distance between the two clamping jaws.

According to the invention, the individual pressing units of the holding assembly can each be provided with a bolt and a nut, wherein the individual bolts each have a head part and a shaft, wherein the Headpiece abuts against the clamping jaw, while the connected to the headstock shaft can be passed through the individual jaws, and wherein the nut is pressed against the other jaw and each screwed onto the shaft of a corresponding bolt.

According to the invention, the guide rail of the outer sleeve may extend from the first end portion to the second end portion.

According to the invention, the first end portion of the outer sleeve may be screwed to one end of the outer tube body.

In the following the invention and its embodiments will be explained in more detail with reference to the drawing. In the drawings shows:

1 an exploded perspective view of a first embodiment of an auxiliary tool set according to the invention for mounting a shock absorber;

2 an exploded perspective view of the first embodiment of an auxiliary tool set according to the invention in which the holding assembly and the drive assembly are separated from each other;

3 a section through the first embodiment of the auxiliary tool set according to the invention for mounting a shock absorber;

4 the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the holding assembly is arranged at one end of the tubular body;

5 the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the drive assembly is arranged on the push rod;

6 the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the nut of the shock absorber screwed onto the threaded portion of the push rod and abuts against the upper end of the inner sleeve;

7 the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the rotary member is in a first rotational position;

8th the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the rotary member is in a second rotational position;

9 the operation of the first embodiment of the auxiliary tool set according to the invention, wherein the fastening unit is in a locking position;

10 the operation of the first embodiment of a portion of the auxiliary tool set according to the invention, wherein the drive unit is released from the push rod;

11 a section through the first embodiment of the holding assembly, wherein the fastening unit is in a released position;

12 a section through the first embodiment of the holding assembly, wherein the fixing unit is in a clamped position; and

13 a section through a second embodiment of the auxiliary tool set according to the invention, wherein the first end portion of the outer sleeve of the drive unit is screwed onto one end of the outer tube body.

In 1 to 3 . 7 and 12 Parts of an auxiliary tool set according to the invention for mounting a shock absorber are shown, wherein the shock absorber 10 a tubular body 11 , partly inside and partly outside the tube body 11 attached push rod 12 , one on one of the tubular body 11 outstanding end of the push rod 12 trained shaft section 121 with a threaded part 1211 , one on the threaded part 1211 of the shaft portion 121 screwed nut 13 and one in the tubular body 11 attached spring 14 that with the pulled out push rod 12 is loaded while the auxiliary tool includes a holding assembly A and a drive assembly B, among others.

The holding assembly A, consisting of two clamping jaws 21 . 22 and two contact units 30 , is at one end 111 of the tubular body 11 arranged to the push rod 12 clamp or release.

The individual jaws 21 . 22 , each consisting of a contact surface 211 . 221 , on each a concave tensioning section 212 . 222 is formed, for clamping or releasing the push rod 12 serves are at the end 111 of the tubular body 11 attached, with both the contact surfaces 211 . 221 as well as the concave clamping sections 212 . 222 are arranged opposite each other.

The individual contact units 30 are each through the two jaws 21 . 22 inserted through a gap between the two jaws 21 . 22 adjust. In the exemplary embodiment, the individual contact units 30 each from a bolt 31 and a nut 32 , The individual bolts 31 each have a headboard 311 and a shaft 312 on, with the headboard 311 against the jaw 21 abuts while with the headboard 311 connected shaft 312 through the individual jaws 21 . 22 can be passed. The nut 32 be against the other jaw 22 pressed and each on the shaft 312 a corresponding bolt 31 screwed. Be the bolts 31 (or the nut 32 ) tightened, so come the two jaws 21 . 22 close to each other, so the push rod 12 is clamped. Be the bolts 31 (or the nut 32 ), so remove the two jaws 21 . 22 from each other, so the push rod 12 is detached.

The drive assembly B, consisting of an outer sleeve 40 , an inner sleeve 50 and a rotary element 60 , is on the push rod 12 fitted so that it sits on top of the holding assembly A.

The outer sleeve 40 is hollow inside and has an outer tube body 41 , an inside of the outer tube body 41 attached guide rail 42 one at one end of the outer tube body 41 trained, first end section 43 which is for seating on the holding assembly A, and one at the other end of the outer tube body 41 trained, second end portion 44 on. In the embodiment, the guide rail extends 42 starting from the first end portion 43 to the second end section 44 , At the second end portion 44 become a warehouse 45 and a C-shaped locking ring 46 attached, the bearing 45 from an outer ring 451 , a plurality of balls 452 and one relative to the outer ring 451 rotatable inner ring 453 consists. Because the camp 45 has a similar structure and a similar operation as a known ball bearing is not explained here in detail. The C-shaped locking ring 46 is by a latching connection at the second end 44 attached and lies against the outer ring 451 of the camp 45 at.

The inner sleeve 50 is made hollow inside and is movable by plugging in the outer sleeve 40 attached, with the inner sleeve 50 one on the shaft portion 121 the push rod 12 attachable inner tube body 51 with an external thread 511 , an outside of the inner tube body 51 trained, to the guide rail 42 adapted guide slot 52 so that the inner sleeve 50 along the guide rail 42 relative to the outer sleeve 40 is movable, and one at one end of the inner tube body 51 arranged head section 53 to which the nut 13 is applied and by the shaft portion 121 with its threaded part 1211 protrudes.

The rotary element 60 has a screw hole 61 with an internal thread 611 on, exactly to that on the inner tube body 51 trained external thread 511 fits, and is rotatable at the second end portion 44 appropriate. In the embodiment, the rotating element 60 also two from the second end section 44 outstanding, opposing handles 62 on, with the rotary element 60 fitting against the inner ring 453 of the camp 45 is arranged so that the rotating element can be rotated even faster.

Above, the main components and their configurations of the first embodiment of the present invention have been described. For the operation and its effectiveness, please see the description below.

In 4 and 11 is shown as the auxiliary tool according to the invention for mounting a shock absorber during a drawing work of the push rod 12 a shock absorber 10 is used. First, the holding assembly A is at the end 111 of the tubular body 11 attached, with the two Anpresseinheiten 30 in a detached state, so that the two jaws 21 . 22 and the push rod 12 do not touch each other.

As in 5 shown, the drive assembly B is on the push rod 12 attached, wherein the shaft portion 121 the push rod 12 through the inner sleeve 50 is hindurchführbar, so that the threaded part 1211 of the shaft portion 121 from the head section 53 the inner sleeve 50 protrudes.

The nut 13 of the shock absorber 10 will, as in 6 shown on the threaded part 1211 of the shaft portion 121 the push rod 12 screwed so that they are against the head section 53 the inner sleeve 50 is applied.

Subsequently, the rotary element 60 , as in 7 shown, turned. Because of the inner sleeve 50 attached guide slot 52 the guide rail 42 the outer sleeve 40 spans, becomes the inner sleeve 50 along the guide rail 42 moved relative to the outer sleeve, wherein the outer sleeve 40 first moves down until the first end section 43 the outer sleeve 40 abuts against the holding assembly A.

According to 8th becomes a movement space of the outer sleeve 40 limited to the bottom. Because the first end section 43 the outer sleeve 40 abuts against the holding assembly A, wherein the holding assembly A again against the end 111 of the tubular body 11 is applied, the outer sleeve can not be moved down in this state. Will the rotary element 60 rotated continuously, the inner sleeve moves 50 by turning the rotary element 60 straight up, with the push rod 12 from the tube body 11 is pulled out.

After the push rod 12 was pulled out to a designated length, as in 9 and 12 shown, the individual contact units 30 tightened by a tool, the two jaws 21 . 22 be pulled towards each other so that their concave clamping sections 212 . 222 the push rod 12 holds.

As in 9 and 10 shown, can the nut 13 then from the shaft portion 121 trained threaded part 1211 the push rod 12 be detached to the drive assembly B from the push rod 12 to remove. At this moment, because the holding assembly A is against the end 111 of the tubular body 11 rests, with the jaws 21 . 22 the push rod 12 Hold on, that will avoid the push rod 12 because of a collected restoring force of the loaded spring 14 returns to its original normal position. As a result, the exhaust work of the push rod 12 finished, so that the assembly of the shock absorber is feasible.

By the present invention is realized that the push rod 12 is pulled out in a drawing work by means of a holding assembly A and a drive group B, with only a simple operation by turning the rotary member 60 is required. Besides, during the whole operation it is avoided that the push rod 12 returns to its original normal position when the rotary element 60 not turned anymore. Therefore, safety in assembling the shock absorber is increased by the present invention.

Moreover, in the present invention, it is not necessary to use the push rod 12 during the whole exhaust work is always recorded, causing damage to the push rod 12 of the shock absorber 10 effectively avoided during extraction work.

In 13 shows a second embodiment of the present invention, wherein the auxiliary tool according to the invention also comprises a holding assembly A and a drive group B. Because the auxiliary tool has the same configuration and operation as the auxiliary tool in the first embodiment, it will not be explained here. There is only one difference between the two embodiments:
The first end section 43 the outer sleeve 40 in the drive group B is in the second embodiment by a screw at one end of the outer sleeve 41 arranged so that the outer sleeve 40 has a working length, which can be changed as needed, so that the auxiliary tool is adapted to different shock absorbers of different dimensions.

LIST OF REFERENCE NUMBERS

10

shock absorber

11

pipe body

111

The End

12

pushrod

121

shank portion

1211

threaded part

13

nut

14

feather

A

support assembly

B

drive assembly

21, 22

jaw

211, 221

contact area

212, 222

concave clamping section

30

pressing unit

31

bolt

311

headboard

312

shaft

32

nut

40

outer sleeve

41

Outer tube

42

guide rail

43

first end section

44

second end section

45

camp

451

outer ring

452

Bullet

453

inner ring

46

C-shaped locking ring

50

inner sleeve

51

Inner tube section

511

external thread

52

guide slot

60

rotating member

61

screw hole

611

inner thread

62

handle

Claims (6)

Auxiliary tool for mounting a shock absorber, wherein the auxiliary tool for pushing on a push rod ( 12 ) is provided a shock absorber and a drive assembly (B), which has an outer sleeve ( 40 ), an inner sleeve ( 50 ) and a rotary element ( 60 ), wherein the outer sleeve ( 40 ) an outer tube body ( 41 ), one inside the outer tubular body ( 41 ) mounted guide rail ( 42 ), one at one end of the outer tubular body ( 41 ), first end portion ( 43 ), and one at the other end of the outer tubular body ( 41 ), second end portion ( 44 ), and wherein the inner sleeve ( 50 ) movable in the outer sleeve ( 40 ) is inserted, wherein the inner sleeve ( 50 ) one on a shaft portion ( 121 ) of the push rod ( 12 ) attachable inner tube body ( 51 ) with an external thread ( 511 ), one on the outside of the inner tubular body ( 51 ) trained, to the guide rail ( 42 ) adapted guide slot ( 52 ), and one at one end of the inner tubular body ( 51 ) arranged head portion ( 53 ), and wherein the rotary element ( 60 ) a screw hole ( 61 ) with an internal thread ( 611 ), which is exactly to that on the inner tube body ( 51 ) formed external thread ( 511 ) and rotatable at the second end portion (FIG. 44 ) is arranged. Auxiliary tool according to claim 1, characterized in that the guide rail ( 42 ) of the outer sleeve ( 40 ) starting from the first end section ( 43 ) to the second end portion ( 44 ) extends. Auxiliary tool according to claim 1, characterized in that the first end portion ( 43 ) of the outer sleeve ( 40 ) on one end of the outer tubular body ( 41 ) is screwed on. Auxiliary tool set with an auxiliary tool according to one of claims 1 to 3, characterized in that the auxiliary tool set further comprises a holding assembly (A), which is for clamping or releasing the push rod ( 12 ), wherein the holding assembly (A) has two clamping jaws ( 21 . 22 ) and two contact units ( 30 ), wherein the individual clamping jaws ( 21 . 22 ) each have a contact surface ( 211 . 221 ), on each of which a concave tensioning section ( 212 . 222 ) is formed, for clamping or releasing the push rod ( 12 ), whereby both the contact surfaces ( 211 . 221 ) as well as the concave clamping sections ( 212 . 222 ) are respectively arranged opposite one another, and wherein the individual contact units ( 30 ) each by the two jaws ( 21 . 22 ) are arranged through a distance between the two clamping jaws ( 21 . 22 ). Auxiliary tool according to claim 4, characterized in that the individual pressing units ( 30 ) of the holding assembly (A) each with a bolt ( 31 ) and a nut ( 32 ), wherein the individual bolts ( 31 ) one head part each ( 311 ) and a shaft ( 312 ), wherein the head part ( 311 ) against the jaw ( 21 ), while the one with the head part ( 311 ) connected shaft ( 312 ) through the individual clamping jaws ( 21 . 22 ) is guided, and wherein the nut ( 32 ) against the other jaw ( 22 ) and each on the shaft ( 312 ) of a corresponding bolt ( 31 ) is screwed on. Method for mounting a shock absorber using an auxiliary tool set according to one of claims 4 or 5, wherein during assembly the drive assembly (B) is supported on the support assembly (A).

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