JP2008246661A - Assembly apparatus for strut assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly apparatus for a strut assembly capable of improving assemblability for a shock absorber rod upper end and a buffer member on an upper bracket. <P>SOLUTION: This assembly device for the strut assembly includes: a receiving table 5 to be attached at a bottom part 2 of a base frame; a movable table 7 which is supported vertically movable for a vertical column 3 of the base frame; and a nut runner 9 which is supported vertically movable for an upper end of a movable body. The receiving table 5 includes an outer casing support part 17, the movable table 7 includes a movable table 6, a bracket support portion for supporting an upper bracket 37 on vertical center line LO extending from the movable table 6, and right and left sliding tables which are slidable in an approaching and separating direction with respect to the vertical center line LO, and the sliding table includes right and left spring presser members and a rod position determining member. The right and left spring presser members compress a spring, thus the upper part of the rod which is positioned by the right and left rod position determining members is made to pass through a center hole on a buffer member for the upper bracket 37 and is then tightened by a nut. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a strut assembly assembling apparatus used as a vehicle suspension apparatus.

  The vehicle reduces the road surface reaction force received by the vehicle by the suspension device. This suspension device connects a vehicle body and an axle support member and holds a wheel in a predetermined alignment state, a spring that supports a vehicle body load while interfering with the road surface reaction force, and a vehicle body based on the road surface reaction force It is equipped with a shock absorber that absorbs and dampens vibrations. In particular, a strut assembly in which a spring and a shock absorber are made into one part is often used.

  This strut assembly is an upper bracket in which a spring is fitted on the outer cylinder outer periphery of the shock absorber, the lower part of the spring is locked to the lower bracket welded to the outer wall of the outer cylinder, and the upper part of the spring is bolted to the rod end. It is locked to. Usually, the upper bracket bolted to the rod end is bolted to the lower surface of the vehicle body side receiving plate, and the lower end of the outer cylinder is connected to the axle support member side. As a result, the road surface reaction force input from the axle support member side is absorbed by the elastic displacement of the spring, and the spring vibration is transmitted to the damping processing portion inside the shock absorber and is damped.

In assembling such a strut assembly, a strut assembly assembling apparatus is used. As an example, an assembly device in which the upper end of the rod is mechanically pulled out from an outer cylinder fixed to the base frame before assembly, and an upper bracket or the like is fitted to the upper end of the rod and then fastened with a nut is disclosed in Japanese Utility Model Publication No. 60-12788. Document 1).
By the way, in the assembling apparatus as shown in FIG. 11, the lower end of the strut assembly 110 is placed on the cradle 100 supported by the bottom base frame (not shown), and the vertical column extends upward from the lower base frame (not shown). The lower part of the shock absorber is held by the shock absorber holding part 120 supported by the part, thereby supporting the strut assembly 110 before assembly vertically.

Further, in this assembling apparatus, a movable base 130 is supported on an upper portion of a vertical column (not shown) so as to be movable up and down, and a support portion 150 of an upper bracket 140 is provided at the center of the movable base. An extended left and right horizontal base portion 160 is provided, and thereby a left and right spring pressing member 180 capable of locking the spring 170 is movably supported.
Here, when the movable base 130 is lowered, the left and right spring pressing members 180 compress the spring 170, and the upper end of the rod 190 relatively protrudes upward. At this time, the buffer member 200 is attached to the attachment hole of the upper bracket in the center of the movable base 130, and the screw portion 191 at the upper end of the rod is passed through the center hole h1. Further, a nut (not shown) is screwed onto the screw portion 191, thereby assembling the upper end portion of the strut assembly 110.

Japanese Utility Model Publication No. 60-12788

  However, when the movable base 130 side is lowered, the upper part of the strut assembly 110 whose lower part is supported by the cradle 100 and the shock absorber holding part 120 may be tilted, resulting in misalignment. Thus, when the center line La of the strut assembly and the center hole h1 of the buffer member 200 on the upper bracket 140 supported by the movable base 130 deviate, the screw portion 191 at the upper end of the rod becomes the buffer member on the upper bracket 140. 200, the shock-absorbing member 200 drops from the upper bracket (see the two-dot chain line in FIG. 11), and the workability is lowered.

Further, after the nut (not shown) is screwed to the upper end of the rod, when the left and right spring pressing members 180 are switched to the open position (the left and right open state), the springs are compressed and released. Is unstablely expanded and the outer peripheral surface of the spring and the left and right spring pressing members 180 slip, and the spring 170 is easily damaged.
In addition, the instantaneous restoring displacement direction when the spring 170 is compressed and released varies depending on the number of turns of the spring, the pressing force, a slight timing of coming off from the left and right spring pressing members 180, and is not necessarily displaced in the true vertical direction. It is unstable and easily protrudes from the spring upper pad 210 that is a spring receiver of the upper bracket 140. Alternatively, when the spring upper pad 210 is integrated with the upper end of the spring 170, the spring upper pad 210 tends to be displaced from the normal position of the upper bracket 140, and an improvement is desired.

The present invention has been made paying attention to the above-mentioned problems, and provides a strut assembly assembling apparatus capable of improving the assembling workability between the upper end of the rod of the shock absorber and the buffer member on the upper bracket. .
It is another object of the present invention to provide a strut assembly assembling apparatus capable of preventing the spring from being damaged when assembling the strut assembly, preventing the spring from protruding from the spring upper pad, or preventing the spring upper pad from shifting from the normal position.

  In order to achieve the above-mentioned object, the invention of claim 1 is attached to the bottom portion of the base frame and is supported by the vertical column portion of the base frame so as to be vertically movable, and a cradle that supports the shock absorber in a vertical direction. And a nut runner supported at the upper end of the movable base so as to be movable up and down. The receiving base includes an outer cylinder support portion that supports a lower portion of the shock absorber, and the movable base is movable. A main body, a bracket support portion that extends from the movable main body and supports the upper bracket of the strut assembly on a longitudinal center line of the cradle, a left and right horizontal base portion that extends left and right from the bracket support portion, and a left and right horizontal base portion And a left and right sliding base that is slidable in a direction that is in contact with and away from the longitudinal center line of the cradle. A rod positioning member that slidably sandwiches the rod so as to be positioned on the longitudinal center line, and displaces the movable base in an approaching direction with respect to the cradle, whereby the left and right springs The pressing member compresses the spring, the upper end of the rod whose position is regulated by the left and right rod positioning members is passed through the center hole of the upper bracket, and the nut is fastened to the upper end by the nut runner. .

  According to a second aspect of the present invention, in the strut assembly assembling apparatus according to the first aspect, the left and right spring pressing members allow an upward movement while being in sliding contact with a spring and a locking position for locking the spring at a lower portion thereof. When the nut is fastened to the screw part so as to be switchable between a first open position and a second open position separated from the spring, the rod positioning member is opened, The left and right spring pressing members are switched to the first opening position and then switched to the second opening position.

  According to a third aspect of the present invention, in the strut assembly assembling apparatus according to the first or second aspect, the left and right spring pressing members are formed of resin at a portion that is in sliding contact with the outer peripheral edge of the spring.

  According to the first aspect of the present invention, the movable base is moved closer to the receiving base, whereby the left and right spring pressing members in the locking position compress the spring, and the position is restricted by the left and right rod positioning members at the same time. At this time, the upper end of the rod whose position is regulated by the left and right rod positioning members is not displaced from the upper extension of the center line of the cradle. Therefore, it is possible to prevent the situation where the upper bracket interferes with the misaligned rod and falls from the mounting hole, and the assembling workability is improved.

  According to the second aspect of the present invention, the left and right spring pressing members are switched from the locking position to the first opening position, thereby allowing the left and right spring pressing members to move upward while being in sliding contact with the outer peripheral edge of the spring. Can do. For this reason, the left and right spring pressing members can be provided with a spring guide function, can regulate unstable elastic displacement when the spring is compressed and released, and the upper end of the spring protrudes beyond the spring upper pad that is the spring bracket of the upper bracket. If the spring upper pad is integrated with the upper end of the spring, it can be reliably prevented that the spring upper pad is displaced from the spring receiving position of the upper bracket. Improves.

  According to the third aspect of the present invention, since the work contact surface that is in sliding contact with the outer peripheral edge of the spring of the left and right spring pressing member is formed of resin, it is possible to eliminate damage to the spring. In addition, the part that forms the workpiece contact surface is made of resin, and the parts other than the resinous part are made of steel fittings that can withstand spring reaction force and impact, thereby preventing deterioration of the durability of the left and right spring retainer members. .

1 and 2 show a strut assembly assembling apparatus as an embodiment of the present invention.
This strut assembly assembling apparatus includes a base frame 1 including a bottom base frame 2 placed on a floor surface A and a vertical columnar vertical base frame 3 extending in a vertical direction from one end of the bottom base frame 2. Here, a receiving base 5 for supporting the shock absorber 4 in a vertical orientation is attached to the bottom base frame 2, and a movable base 7 having a movable main body 6 is supported on the vertical base frame 33 so as to be movable up and down. A nut runner 9 is supported on the vertical rail 8 at the upper end of the nut so as to be movable up and down.
A strut mounting base 11 having a receiving base 5 for supporting the shock absorber 4 in a vertical orientation and a load receiving member 12 are mounted on the upper surface of the bottom base frame 2.

The strut mounting base 11 is provided with strut mounting portions 13 on the two vertical wall surfaces thereof. The strut mounting base 11 is supported on the drive unit storage base 14 so as to be rotatable around the vertical rotation center line L1. In addition, the mounting base drive unit 15 in the drive unit storage base 14 is switched and controlled in a timely manner by the control means 16 to be described later, so that either one of the strut mounting portions 13 is switched to face the vertical base frame 3 side, Hold.
In each strut mounting portion 13, the strut mounting base 11 is switched and rotated every 180 ° by the drive unit storage base 14, and at that time, the strut can be assembled at the assembly position K1 facing the vertical base frame 3, and further 180 °. When the pre-assembly position K2 is rotated, a new pre-assembly strut is assembled in the strut mounting portion 13.
Each strut mounting portion 13 includes a receiving base 5 protruding from the vertical wall of the strut mounting base 11 by a predetermined amount, an outer cylinder holding portion 17 above the receiving base 5 by a predetermined amount, and a predetermined amount above the outer cylinder holding portion 17. Spring holding portions 18, and these support the struts along the longitudinal longitudinal center line.

  The cradle 5 is provided with a concave groove portion 21 on the upward surface thereof for mounting the cylindrical axle connecting portion 19 welded to the lower end of the shock absorber 4 without any deviation, and a low wall surface 22 is formed immediately below the concave groove portion 21. Is done. The low wall surface 22 is formed so as to be able to contact the upper end contact portion 121 of the load receiving member 12. The load receiving member 12 prevents the cradle 5 and the strut M ′ on the cradle 5 from being displaced downward. The retreat position E0 (2 in FIG. The position is switched from the position indicated by the dotted line) to the contact position E1 (the position indicated by the solid line in FIG. 1) by switching the supply and discharge of the high pressure air in the air cylinder 23. An air source (not shown) is connected to the air cylinder 23 via a switching valve 231 for switching air, and the switching valve 231 is switched at appropriate times by the control means 16 described later.

The outer cylinder holding portion 17 has an arm portion 171 protruding a predetermined amount from the vertical wall of the strut mounting base 11, a base end side is pin-coupled to the inside of the arm portion, and a rotating end side holds the outer cylinder bottom portion of the shock absorber 4. A pair of possible curved gripping members 172 and a drive unit 173 that is disposed in the strut mounting base 11 and that grips and operates the pair of curved gripping members 172 in the horizontal plane around the base end side.
The spring holding portion 18 is guided by a vertical rail 24 provided on the upper portion of the vertical wall of the strut mounting base 11, and a lifting frame 26 whose height position can be appropriately switched by an air cylinder 25, and a spring 27 supported by the lifting frame 26. A pair of spring gripping members 28 that can be sandwiched and an elastic force applying member (not shown) that grips and operates the spring gripping members 28 with a predetermined elastic force in the horizontal plane centering on the base end side. An air source (not shown) is connected to the air cylinder 25, and a switching valve (not shown) is switched in a timely manner by the control means 16 described later, so that the height position of the elevating frame 26 can be switched as appropriate.

Each strut mounting portion 13 including the cradle 5, the outer cylinder holding portion 17, and the spring holding portion 18 is formed between the assembly position K1 facing the vertical base frame 3 and the pre-assembly position K2 on the opposite side. Rotate alternately. The strut assembly M that has been assembled at the assembly position K1 is removed at the pre-assembly position K2, and a new pre-assembly strut M ′ is attached to the strut mounting portion 13 along the vertical center line L0.
On the other hand, the vertical base frame 3 arranged opposite to the strut mounting base 11 has a vertical support rail 8 attached to one side surface thereof, and the movable main body 6 of the movable base 7 is supported so as to be movable up and down. A spring compression raising / lowering drive motor 35 (hereinafter simply referred to as a main motor) is attached to the other side surface of the vertical base frame 3. The rotational force of the main motor 35 is transmitted to a feed screw shaft 36 provided along with the vertical support rail 8 via an endless belt 37.
The feed screw shaft 36 in the vertical support rail 34 is screwed into a feed screw member (not shown) supported on the movable body 6 side, and the movable body 6 side is moved up and down in accordance with forward and reverse rotation of the feed screw shaft 36. These can be moved, and these constitute an elevating drive unit.

  A vertical support rail 34 is provided at the upper portion of the movable body 6, and the nut runner 9 is supported here, and a bracket support portion 38 for supporting the upper bracket 37 is formed at the lower portion.

The nut runner 9 can be moved up and down by the electric vertical feed mechanism to the retreat position H1 and the fastening position H2. At the fastening position H2, the nut n is operated to be screwed onto the rod 39 on the upper part of the strut assembly M by using air pressure as a driving source. it can.
As shown in FIG. 7, the bracket support portion 38 has a central substrate 41 extending from the lower portion of the movable body 6 and a support frame 42 protruding from the lower portion thereof so as to be adjustable. As shown in FIGS. 7 and 2, the support frame 42 is formed with a plurality of clamping holes 421 for the fastening bolts 371 on the upper bracket 37 side. By pushing the fastening bolt 371 on the upper bracket side into the clamping hole 421, the fastening bolt 371 can be gripped without deviation and the upper bracket 37 side can be supported on the vertical center line L0.

As shown in FIG. 7, left and right horizontal base portions 43 are formed to extend from the left and right ends of the support frame 42 of the bracket support portion 38 to the left and right.
The left and right horizontal platform 43 is provided with left and right horizontal rails 44 to which a left and right slide 45 is attached. The left / right slide 45 is driven by an air cylinder 46 directly connected in two stages. Left and right spring pressing members 47 are attached to the lower part of the left and right sliding table 45 so as to be able to contact and separate from each other, and left and right rod positioning members 48 are provided above the left and right spring holding members 47.

  As shown in FIGS. 2 and 3, the left and right spring pressing members 47 are respectively pressed to the outer frame 49 fixed to the left and right slide base 45, the inner frame 51 integrally coupled to the inner side thereof, and the inner frame 51. And a resin piece 53 integrally clamped by the piece 52. Each outer frame 49 and inner frame 51 of each of the left and right spring pressing members 47 has a downward spring receiving portion h formed in a concave shape on the side facing the vertical center line L0. As shown in FIG. 3, the left and right spring pressing members 47 can be switched and moved between a locking position C0 and first and second opening positions C1 and C2. In the locking position C <b> 0, when the left and right recesses approach, a downward spring receiving portion h can be formed, and the upper end of the spring 27 can be locked.

  A pair of resin pieces 53 are fastened to the left and right inner frames 51 on the side facing the vertical center line L0. When the left and right spring pressing members 47 reach the first opening position C1 from the locking position C0, the sliding contact surface f1 slides on the outer peripheral surface of the spring 27 as shown in FIG. It is held in a position where it touches and allows its upward movement. Since the left and right spring pressing members 47 are held at the first opening position C1, the displacement of the spring 27 with which the sliding contact surface f1 is elastically displaced from the vertical center line L0 can be restricted. That is, it can have a spring guide function, restricts unstable elastic displacement when the spring 27 is compressed and released, and ensures that the upper end of the spring 27 protrudes from the spring upper pad 55 which is a spring receiver of the upper bracket 37. Can be prevented.

Left and right rod positioning members 48 are provided above the spring pressing member 47. As shown in FIGS. 4 and 6 (a) to 6 (c), the left and right rod positioning members 48 are driven by the left and right air cylinders 56 (see FIG. 7) fixed to the left and right sliding bases 45. The holding claw 57 is relatively moved.
Here, the left and right clamping claws 57 slide along a straight guide groove 511 (see FIG. 4) formed in the inner frame 51, and a retreat position N1 (see FIG. 7A) and a clamping position N2 (FIG. 7). (See (b)). The left and right clamping claws 57 are slidably sandwiched at the clamping position N2 (see FIG. 7B) so that the upper end portion of the rod 39 is positioned on the vertical center line L0 without being leaned from the left and right. That is, the left and right clamping claws 57 are formed so as to maintain a loose clamping state that allows the upper and lower sliding of the upper end of the rod 39 at the clamping position N2.

Here, a plurality of air pipes p <b> 1 and p <b> 2 are connected to the left and right air cylinders 56 that are the driving source of the spring pressing member 47 and the two-stage directly connected air cylinder 46 that is the driving source of the spring pressing member 47. The plurality of air pipes p1 and p2 are connected to an air source side (not shown) through a bracket support portion 38, a movable main body 6, and a flexible pipe 58 (see FIG. 1). In addition, as indicated by a two-dot chain line in FIG. 1, the switching control valve V of the left and right air cylinders 56 and the air cylinder 46 directly connected in two stages is also connected to the control means 16 via a lead wire (not shown).
The operation of such a strut assembly assembly apparatus will be described together with the control function of the control means 16.

In addition, the strut M ′ before assembly is attached to the strut mounting portion 13 on the side facing the pre-assembly position K2 of the strut attachment base 11 in advance, and the upper bracket is attached to the bracket support portion 38 of the movable base 7. 37 is attached so that the upper center hole In is positioned on the vertical center line L0.
Then, when the assembly start command is received from the operator, the control means 16 starts the assembly operation.

  When an assembly start command is received here, at that time, the strut mounting base 11 rotates 180 °, and the bracket support portion 38 faces the assembly position K1 as shown in FIG. At this time, the load receiving member 12 is arranged so as to abut on the low wall surface 22 of the cradle 5 of the bracket support portion 38 (E1 position), whereby the cradle 5 is displaced up and down by a load at the time of subsequent spring compression. Can be prevented.

In this initial position, as shown in FIG. 7 (a), the movable base 7 is held at the retracted position R0, which is the initial position, the left and right spring pressing members 47 are held at the second open position C2, and the left and right rods The positioning member 48 is held at the retreat position N1.
Next, as shown in FIG. 7B, the movable base 7 is moved down from the retracted position R0 to the assembling position R1 by the control means 16, and then the left and right spring pressing members 47 are held at the clamping position C0. It is assumed that the rod positioning member 48 is held at the clamping position N2.
Thereby, the deviation of the rod 39 from the longitudinal center line L0 is eliminated, and downward spring receiving portions h are formed in a concave shape on the lower surfaces of the left and right spring pressing members 47.

  Next, as shown in FIG. 8A, the control means 16 moves the movable base 7 downward from the assembling position R1 to the penetrating position R2. At this time, the upper ends of the springs 27 can be fitted into the downward spring receiving portions h of the left and right spring pressing members 47. At the same time, the center hole In of the collar I1 of the cushioning member I attached to the upper bracket 37 coincides with the vertical center line L0 by the action of the left and right rod positioning members 48. For this reason, the threaded portion of the upper end of the rod rising along the longitudinal center line L0 can pass through the center hole In without interfering with the collar I1, etc., and the threaded portion can be positioned upward. At this time, it is possible to prevent the threaded portion from coming into contact with the buffer member I, the buffer member I falling, and the penetration process from malfunctioning.

Next, as shown in FIG. 8B, the control means 16 further presses the movable base 7 from the penetrating position R2 to the fastening position R3 and is held in that state. In this state, the control means 16 moves the nut runner 9 downward from the retreat position H1 to the fastening position H2, and drives the nut runner 9 to be fastened at the fastening position H2. At this time, the nut runner 9 can fasten the upper bracket 37 with the upper end of the spring 39 in contact with the screw 39 of the rod 39 on the upper part of the strut assembly M by using the air pressure as a driving source. .
Next, the left and right rod positioning members 48 are switched to the retreat position N1, and the left and right spring pressing members 47 are switched and held at the first opening position C1. At this time, as shown in FIG. 3, the sliding contact surface f1 of each resin piece 53 integral with each of the left and right spring pressing members 47 is in sliding contact with the outer peripheral surface of the spring 27 which is elastically displaced and allowed to move upward. , The deviation with respect to the vertical center line L0 can be regulated.

That is, the sliding contact surface f1 (see FIG. 3) of each resin piece 53 can have a spring guide function, and unstable elastic displacement when the spring 27 is compressed and released can be restricted. For this reason, it is possible to reliably prevent the upper end of the spring 27 from protruding from the spring upper pad 55 which is a spring receiver of the upper bracket 37.
Next, as shown in FIG. 8C, the control means 16 switches the left and right spring pressing members 47 to the retracted position N1, the left and right sliding bases to the second open position C2, and lifts the nut runner 9 to the retracted position H1. . Thereafter, the control means 16 raises the movable platform 7 from the fastening position R3 to the retreat position R0.
Thereafter, the control means 16 rotates the strut mounting base 11 by 180 ° so that the assembled strut assembly M faces the pre-assembly position K2.

At this time, the next pre-assembly strut M ′ has already been attached to the other bracket support portion 38 of the strut mounting base 11, and the next assembly command is awaited.
As described above, according to the strut assembly assembling apparatus of FIG. 1, the screw portion 391 on the upper end side of the rod 39 whose position is restricted by the left and right rod positioning members 48 is simultaneously protruded and displaced toward the upper bracket 37 side. Since the upper end of the rod 39 whose position is regulated by the positioning member 48 does not deviate from the longitudinal center line L0, the rod 39 can surely penetrate the central hole In of the buffer member I attached to the attachment hole of the upper bracket 37, Occurrence of a situation in which the buffer member I attached to the attachment hole comes into contact with the displaced rod 39 and falls from the attachment hole can be prevented, and the assembling workability is improved.

  Further, the left and right spring pressing member 47 can have a spring guide function, and the upper end of the spring 27 can be reliably prevented from protruding from the spring upper pad 55 of the upper bracket 37. Further, since the work contact surface slidably contacting the outer peripheral edge of the spring 27 of the left and right spring pressing member 47 is formed of resin, the spring 27 can be prevented from being damaged. In addition, the portion that forms the workpiece contact surface is made of resin, and the portions other than the resin portion are made of steel fittings that can withstand the spring reaction force and impact, thereby preventing deterioration of the durability of the left and right spring retainer members 47. .

In the above description, the upper bracket 37 assembled to the strut M ′ before assembly is pre-equipped with a spring upper pad in its spring receiving portion (see FIG. 7A), and the upper end of the spring 27 is against this. Were assembled so that they contact each other.
On the other hand, in FIGS. 9A to 10C, the upper end of the spring 27 is pre-equipped with a spring upper pad 55 ′, and this is fitted into the spring receiving portion of the upper bracket 37. An embodiment of assembling is shown. The spring upper pad 55 is excluded from the spring receiving portion of the upper bracket 37 before assembly.
Here, there are few differences in an assembly process compared with the case in FIG. 7 (a)-FIG.8 (c), and duplication description is abbreviate | omitted. Here, the movable part 7 is held at the retreat position R0 in the initial state in FIG. 9A, the movable part 7 is moved down to the assembly position R1 in FIG. 9B, and the movable base is moved in FIG. 10A. Move down to the penetrating position R2. Further, in FIG. 10B, the movable base 7 is moved down to the penetrating position R2. Further, in FIG. 10 (b), the movable base is lowered to the fastening position R3, and the nut n is screwed onto the screw portion 391 of the rod 39. Then, in FIG. 10 (c), the left and right rods are assembled from the assembled strut assembly M. The positioning member 48 and the left and right spring pressing members 47 are switched to the retreat positions, respectively, so that the strut assembly M can be taken out.

  Here, the difference with respect to the process in the steps shown in FIGS. 7A to 8C is the operation at the penetration position R2 in FIG. 10B. In this step, the control means 16 switches the left and right rod positioning members 48 to the retracted position N1 while holding the movable platform 7 at the penetrating position R2, and further switches the left and right spring pressing members 47 to the first opening position C1.

At this time, the sliding contact surface f1 of each of the left and right resin pieces 53 held at the first open position C1 and the outer peripheral surface of the spring upper pad 55 at the upper end of the spring 27 that is elastically returned and displaced are brought into sliding contact.
Then, the spring upper pad 55 is fitted into the spring receiving portion of the upper bracket. Also in this case, the sliding contact surface f1 can be provided with a spring guide function, the displacement of the spring upper pad 55 with respect to the longitudinal center line L0 can be restricted, and the spring upper pad 55 can be attached at a regular position in the spring receiving portion.

  The strut assembly assembling apparatus shown in FIGS. 9 (a) to 10 (c) prevents the displacement of the rod 39 from the vertical center line L0 by the left and right rod positioning members in the same manner as the apparatus shown in FIG. The through-hole work with respect to the center hole In can be performed smoothly, and an effect of improving the assembly workability can be obtained. Moreover, both the spring upper pad 55 and the sliding contact surface f1 of each of the left and right resin pieces 53 are made of resin, so that they can be prevented from being damaged each other, and the occurrence of damage to the spring 27 can be reliably prevented.

It is a block diagram of the strut assembly assembly apparatus as one Embodiment of this invention. It is a principal part expanded side sectional view of the movable stand side of the strut assembly assembly apparatus of FIG. It is a principal part top view of FIG. It is side surface sectional drawing from the orthogonal direction of FIG. FIG. 4 is a partial cross-sectional view of FIG. 3, (a) is a partial cross-sectional view taken along line BB, and (b) is a partial cross-sectional view taken along line YY. FIG. 2 shows a clamping claw of the strut assembly assembling apparatus of FIG. 1, (a) is a plan view, (b) is a side view, and (c) is a front view. FIG. 2 is an explanatory diagram of an assembly process of the strut assembly assembling apparatus of FIG. 1, (a) shows an initial position, and (b) shows an assembly position. FIG. 2 is an explanatory diagram of an assembly process of the strut assembly assembling apparatus of FIG. 1, (a) shows a through position, (b) shows a fastening position, and (c) shows an open position. It is an assembly process explanatory drawing of the strut assembly assembling apparatus as 2nd embodiment, (a) shows an initial position, (b) shows an assembly position. FIG. 6 is an explanatory diagram of an assembly process of a strut assembly device as a second embodiment, where (a) shows a through position, (b) shows a fastening position, and (c) shows an open position. It is explanatory drawing of a conventional apparatus.

Explanation of symbols

2 Bottom of the base frame 3 Vertical column 5 Receiving base 6 Movable body 7 Movable base 9 Nut runner 17 Outer cylinder support part 37 Upper bracket 39 Rod 42 Bracket support part 43 Left and right horizontal base part 45 Left and right slide base 47 Spring pressing member 48 Rod positioning member n Nut I Buffer member In Center hole L0 Vertical center line

Claims (3)

A base that is attached to the bottom of the base frame and supports the shock absorber in a vertical orientation, a movable base that is supported by the vertical column portion of the base frame so as to be movable up and down, and a movable base that can be moved up and down at the upper end of the movable base A supported nut runner,
The cradle includes an outer cylinder support portion that supports a lower portion of the shock absorber,
The movable base includes a movable main body, a bracket support portion that extends from the movable main body and supports the upper bracket of the strut assembly on a longitudinal center line of the cradle, and a horizontal horizontal base portion that extends to the left and right from the bracket support portion. A left and right slide that is supported by the left and right horizontal base and is slidable in a direction that is movable toward and away from the longitudinal center line of the cradle,
The left and right sliding base includes a left and right spring pressing member capable of locking the spring at a lower portion thereof, and a rod positioning member that slidably holds the rod so as to be positioned on the vertical center line at an upper portion thereof.
The left and right spring pressing members compress the spring by displacing the movable table in the approaching direction with respect to the receiving table, and the upper end of the rod whose position is regulated by the left and right rod positioning members penetrates the central hole of the upper bracket. And a nut is fastened to the upper end by the nut runner. The strut assembly assembly device according to claim 1,
The left and right spring pressing members can be switched between a locking position for locking the spring at a lower portion thereof, a first opening position for allowing the spring to move upward while being in sliding contact with the spring, and a second opening position for releasing the spring. It can be mounted on the left / right slide,
When the nut is fastened to the screw portion, the rod positioning member is opened, and the left and right spring pressing members are switched to the first opening position, and then switched to the second opening position. Assembly assembly device. The strut assembly assembly device according to claim 1 or 2,
A strut assembly assembling apparatus characterized in that the left and right spring pressing members are formed of resin at a portion that is in sliding contact with the outer peripheral edge of the spring.

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