JPH0540938Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for disassembling and assembling a strut assembly (strut subassembly) in an automobile suspension by contracting the coil spring of the strut assembly. The present invention relates to a strut assembly disassembly and assembly device.

[Prior Art] Conventionally, this type of device or jig has been
The one shown in FIG. 14 has been proposed. In the structure shown in FIG. 14, when disassembling or reassembling the strut assembly, the coil spring of the strut assembly is set so as to be sandwiched between the upper and lower plates a and b, and the coil spring of the strut assembly is set between the upper and lower plates a and b.
Two screw shafts d screwed into the female thread part c in
(This screw shaft d is loosely fitted into the upper plate a) by rotating it, the lower plate b is brought relatively closer to the upper plate a,
The coil spring is being contracted.

[Problems to be solved by the invention] However, with such conventional strut assembly disassembly and assembly equipment, for example, it is impossible to reassemble the front suspension coil spring for one car without several people spending one day. However, there are problems in that the workability is poor and it is difficult to adapt to various coil springs.

The present invention is an attempt to solve these problems, and provides a strut assembly disassembly and assembly device that can disassemble and assemble strut assemblies in a short time and is fully compatible with various coil springs. The purpose is to

[Means for solving the problem] Therefore, the strut assembly disassembly and assembly device of the present invention disassembles and assembles the strut assembly by contracting the coil spring of the strut assembly. The device includes at least three support rods protruding along the circumference, and
a first coil spring contraction mechanism disposed at one end of the space surrounded by these support rods and capable of contracting the coil spring by contacting one end of the coil spring; a second coil spring contraction mechanism that is locked to the other end and can contract the coil spring in cooperation with the first coil spring contraction mechanism; A guide groove formed along the longitudinal direction of each support rod; a hook provided so as to be movable forward and backward with respect to the guide groove; and a hook capable of locking the other end of the coil spring and moving along the guide groove; a threaded shaft that is operatively connected to the hook, has an intermediate portion extending along the guide groove, is threadedly engaged with a female threaded portion at the other end of the support rod, and has the other end protruding from the support rod;
The present invention is characterized in that it includes an operation handle attached to the other end of the threaded shaft for rotating the threaded shaft.

[Operation] In the above-described strut assembly disassembly and assembly apparatus of the present invention, first, when disassembling the strut assembly, each hook of the second coil spring contraction mechanism is retracted, and the strut assembly is Insert the book into the space surrounded by the support rods, bring one end of the coil spring of the strut assembly into contact with the first coil spring contraction mechanism, project the hooks, and engage the other end of the coil spring with each hook. make it stop Thereafter, by turning each operating handle to drive each screw shaft into the support rod and moving each hook along the guide groove, the coil spring is contracted. Then, in this state,
The first coil spring contraction mechanism is operated to extend or protrude. Then, when the coil spring and the Atsupa sheet come off slightly, the insulator and Atsupa sheet are removed. After removing the Atsupa sheet, the first coil spring contraction mechanism is contracted or retreated.
In this way, the disassembly work of the strut assembly is completed.

Next, to assemble the strut assembly,
With each hook retracted, insert the unassembled strut assembly into the space surrounded by the three support rods, bring one end of the coil spring of the strut assembly into contact with the first coil spring contraction mechanism, and , each hook is projected and the other end of the coil spring is locked to each hook. Thereafter, by turning each operating handle to drive each screw shaft into the support rod and moving each hook along the guide groove, the coil spring is contracted. At this time, the coil spring is contracted while adjusting the movement of the three hooks so that the center of the shaft of the strut is approximately aligned with the hole in the upper sheet to be attached next. In this state, the first coil spring contraction mechanism is then operated to extend or project. When the tip of the strut's shaft inadvertently protrudes from the upper end of the coil spring, adjust the center of the strut's shaft to align with the hole in the next attachment sheet by slightly moving the three hooks again. do. In this way, when the shaft center of the strut is aligned with the hole in the top sheet, the top sheet is attached and then the insulator is attached. After the Atsupa sheet and the insulator are attached, the first coil spring contraction mechanism is contracted or retreated. In this way, the assembly work of the strut assembly is completed.

[Example] Hereinafter, a strut assembly disassembly and assembly device as an example of the present invention will be explained with reference to the drawings.
The figure is an elevational view of the device seen from a side different from that shown in Figure 1, Figure 3 is a plan view thereof, Figure 4 is a schematic configuration diagram showing the second coil spring contraction mechanism, and Figure 5 is a schematic configuration diagram showing the second coil spring contraction mechanism.
The figure is a side view showing the hook, Figure 6a is a perspective view showing the suspension attachment, and Figure 6a is a perspective view showing the suspension attachment.
Figure b is a perspective view showing the jack attachment, Figure 7 is an elevational view to explain its action,
Figure 8 is a partial view showing the part in Figure 7, and Figures 9 and 10.
Both figures are schematic diagrams for explaining how to lock the coil spring with the hook.
Figure 1 is a schematic diagram showing how the coil spring and Atsupa sheet slightly come off during disassembly.
Figures 2a and b are both schematic diagrams to explain how to align the shaft center of the strut with the hole in the top sheet during assembly, and Figure 13 is a schematic diagram showing how to align the shaft center of the strut with the hole in the top sheet during assembly. FIG.

This strut assembly disassembly and assembly device is a device that disassembles and reassembles the strut assembly by contracting the coil spring of the strut assembly (including the strut, coil spring, upper seat, lower seat, insulator, etc.) in an automobile suspension. As shown in Figs. 1 to 3, this strut assembly disassembly and assembly device is equipped with three support rods 2 erected on a substrate 1 at intervals of 120 degrees. A first coil spring contraction mechanism SC1 capable of contracting the coil spring 3 by supporting the lower seat 4 side with the lower end of the coil spring 3 in a vertically movable manner is disposed at the bottom of the space surrounded by the pillars 2. ing.

This first coil spring contraction mechanism SC1 is
The hydraulic jack 5 is configured to include a hydraulic jack 5 placed on a base plate 1, and the hydraulic jack 5 is fixed to the base plate 1 with its cylinder portion 5A facing upward.
The rod 5B is designed to be able to expand and contract in the vertical direction.

A strut assembly/attachment mounting base 8 is attached to the tip of the rod 5B.

If the coil spring 3 is short or small, a jack attachment 6 as shown in FIG. 6b is attached to the tip of the rod 5B of the hydraulic jack 5.

The strut assembly/attachment mounting base 8 is also provided with a strut fixing part 7 having a pin hole, and the pin hole of the strut fixing part 7 is connected to the pin hole of the lower end of the front suspension strut assembly. The lower end of the front suspension strut assembly is attached to the strut fixing part 7 by aligning the two struts and inserting the pin 9 into the pin hole of both. Since the strut does not have a pin hole that matches the pin hole of the fixing part 7, a rear suspension attachment 7A as shown in FIG. 6a is attached to this strut fixing part 7. That is, this attachment 7A has its pin hole 7A
-1 by inserting the pin 9 into the strut assembly/attachment mounting base 8, so that its upper half can be engaged with the rear suspension strut assembly.

Furthermore, the strut assembly/attachment mount 8 is attached to a certain column 2 so as to be able to move up and down. Note that three rollers 9 are attached to the strut assembly/attachment mount 8, thereby facilitating the vertical movement of the strut assembly/attachment mount 8.

Furthermore, when the hydraulic jack 5 operates its jack lever 11, pressure oil can be supplied to the cylinder portion 5A to extend the rod 5B.
When operated, hydraulic oil can be discharged from the cylinder portion 5A and the rod 5B can be contracted.

Furthermore, a second coil spring 3 is engaged with the upper end of the coil spring 3 in the upper part of the space surrounded by the three pillars 2, and can contract the coil spring 3 in cooperation with the first coil spring contraction mechanism SC1. A coil spring contraction mechanism SC2 is provided.

And this second coil spring contraction mechanism
SC2 is configured as follows. first,
Guide groove 1 formed along the vertical direction in each support column 2
6 (see Figure 4), each guide groove 16
The cursor 17 is fitted into this guide groove 1.
It is installed so that it can be raised and lowered along line 6.

Each cursor 17 is provided with a hook 18 having a hook portion 18a that can be engaged with the upper end portion of the coil spring 3 so as to be movable forward and backward relative to the cursor 17. That is, as shown in FIG. 5, this hook 18 has a long groove 18b formed therein, and the tip of the tightening bolt from the cursor 17 can come into contact with this long groove 18b. The hook 18 can be moved forward and backward relative to the cursor 17, but by tightening and operating a stopper 19 provided on the cursor 17 side and integrated with the bolt, the hook 18 can be held against the cursor 17 via the bolt. This allows the hook 18 to be fixed at a desired position relative to the cursor 17.

As a result, each hook 18 is engaged with the upper end portion of the coil spring 3 and can move up and down along the guide groove 16.

Each cursor 17 is provided with pins 20 and 21 that are applied to the support column 2 to support the reaction force of the coil spring 3 via the hook 18.

Further, the lower end of a screw shaft 22 is connected to each cursor 17 via a roller bearing 23 (see FIG. 4). That is, this cursor 1
7 and the screw shaft 22, as shown in FIG. 4, the screw shaft 22 passes through the upper wall of the cursor 17, further passes through the roller bearing 23, and is tightened with a nut at the lower end of the screw shaft. combined. As a result, even if the screw shaft 22 moves up and down while rotating, the cursor 17 does not rotate and the guide groove 1
It is possible to go up and down along 6.

Further, each threaded shaft 22 has an intermediate portion extending upward along the guide groove 16 and threadedly engages with a female threaded portion 24 at the upper end of the support column 2, and furthermore, the upper end thereof protrudes from the support column 2. There is.

The upper end of each screw shaft 22 is provided with a screw shaft 2.
An operation handle 25 for rotationally operating 2 is attached.

This strut assembly disassembly and assembling device is not a stationary strut assembly disassembly and assembling device, but a mobile strut assembly disassembly and assembling device. A moving frame 26 is provided which is supported by being appropriately attached to a support 2, and the base plate 1 is provided with wheels 27 which protrude laterally. The reason why the wheels 27 protrude sideways in this way is that when the wheels 27 are in use,
when moving this strut assembly disassembly equipment so that it is out of the way.
Holding the moving frame 26, rotate the strut assembly disassembly and assembly device in the counterclockwise direction in FIG. 2 until the wheels 27 reach the floor or the like.
After that, all you have to do is hold the frame 26 and push the device to the desired location.

With the above configuration, when disassembling the strut assembly, first loosen the stopper 19 and place each hook 18 of the second coil spring contraction mechanism SC2 in the retracted state as shown in FIGS. 7 and 8. do. At this time, the cursor 17 is set at approximately the midpoint of the vertical movement range.

Then, the strut assembly is inserted into the space surrounded by the three pillars 2, and the lower seat 4 at the lower end of the coil spring 3 of the strut assembly is supported by the first coil spring contraction mechanism SC1. That is, in the case of a front suspension strut assembly, the lower end of the strut is attached to the rod 5B of the hydraulic jack 5 via the strut assembly/attachment mounting base 8,
For rear suspension strut assembly, use rear suspension attachment 7A.
The lower end of the strut is then attached to the rod 5B of the hydraulic jack 5 via the strut assembly/attachment mount 8.

When installing, loosen the strut tightening screws beforehand.

After that, operate the jack lever 11 to move the hook 18 from the upper end of the coil spring 3 by 2 to 3
Jump up and down until it reaches the position of the roll.
Note that when the first stage of the hydraulic jack 5 is extended but does not reach this position, a jack attachment 6 as shown in FIG. 6b is used.

Next, each hook 18 is made to protrude as shown by the chain line in FIG.

At this time, the operating handle 25 is turned as shown in FIG. 9 to adjust the hook 18 so that it is inserted between the turns of the coil spring 3, and then the hook 18 is pushed in.

Further, the insertion position of the hook 18 is preferably as high as possible above the coil spring 3. This is because in that case, a larger margin stroke can be taken.

After that, each operation handle 25 is turned to lower each screw shaft 25, and each hook 18 is moved into the guide groove 1.
6, it is brought into engagement with the coil spring 3, as shown in FIG.

After confirming that the hook 18 is securely engaged with the coil spring, stopper 1
Tighten 9.

At this time, the three cursors 17 are equally tightened to the extent that a slight preload is applied.

Next, in this state, the hydraulic jack 5 of the first coil spring contraction mechanism SC1 is operated to move upward. When the coil spring 3 and the upper seat 14 are slightly separated as shown in FIG. 11, the tightening screws of the strut are then removed and the insulator 15 and the upper seat 14 are removed. After removing the Atsupashi seat, operate the jack hydraulic pressure release valve 12 to release the hydraulic jack 5 of the first coil spring contraction mechanism SC1.
Move down.

In this way, the strut assembly disassembly work is completed.

Next, to assemble the strut assembly,
As shown in FIGS. 7 and 8, with each hook 18 retracted, the unassembled strut assembly is inserted into the space surrounded by the three pillars 2, and the lower end of the coil spring 3 of the strut assembly is The lower seat 4 of the first coil spring contraction mechanism
At the same time, each hook 18 is made to protrude and the upper end of the coil spring 3 is supported by each hook 1.
Lock it at 8. At this time, coil spring 3
Adjust the three hooks 18 by putting them in and taking them out so that they stand straight up against the device.

After that, each operation handle 25 is turned to lower each screw shaft 22, and each hook 18 is moved into the guide groove 1.
6, the coil spring 3 is contracted. At this time, if the shaft center of the strut 13 is deviated from the center position as shown in FIGS.
The coil spring 3 is contracted while adjusting the lowering degree of the three hooks 18 so that the center of the shaft 3 substantially aligns with the hole in the upper sheet 14 to be attached next.

Thereafter, in this state, the hydraulic jack 5 of the first coil spring contraction mechanism SC1 is operated upward. As shown in FIG. 13, when the shaft tip of the strut 13 slightly protrudes from the upper end of the coil spring 3, the three hooks 18 are raised slightly again until the center of the shaft of the strut 13 is aligned with the upper sheet 14 to be attached next. Adjust to match the holes in the

In this way, when the shaft center of the strut 13 is aligned with the hole in the Atsupa sheet 14, the Atsupa sheet 14 is attached, and then the insulator 1
Attach 5. Then, after attaching the Atsupa sheet 14 and the insulator 15, the first
The hydraulic jack 5 of the coil spring contraction mechanism SC1 is moved downward. Note that after the hydraulic jack 5 is lowered, the tightening screws of the upper seat 14 and the insulator 15 are fully tightened.

Finally, the stopper 19 is loosened, the hook 18 is moved back and expanded, the strut fixing pin is pulled out, and the strut assembly is taken out.

In this way, the strut assembly assembly work is completed.

After use, push the hook 18 forward and tighten the stopper 19.

In this way, by using this strut assembly disassembly and assembly device, one person can reassemble the coil springs for one front suspension in about 15 minutes, and this allows one person to disassemble and assemble the strut assembly. can be done in a short time. Furthermore, it is fully compatible with various coil springs.

Note that Figures 1 and 7 are drawn schematically, so even if the lengths of the pillars 2 are different in Figures 1 and 7 and Figure 2, the lengths of the pillars 2 are originally the same. It is.

Furthermore, the present invention can be applied not only to an apparatus in which the apparatus of the above embodiment is turned upside down, but also to an apparatus in which the apparatus of the above embodiment is placed horizontally.

Also, instead of forming the long groove 18b in the hook 18, a long hole is formed in the hook 18, and the stopper 1
Pass the middle part of the bolt with 9 through this elongated hole,
Furthermore, by tightening the nut on the other end of the bolt,
It is also possible to fix the hook 18 to the cursor 17.

In addition, a pantry jack may be used instead of the hydraulic jack 5.

[Effects of the invention] As detailed above, according to the strut assembly disassembly and assembly apparatus of the present invention, the strut assembly can be disassembled and assembled by contracting the coil spring of the strut assembly. The assembly device includes at least three support rods protruding along the circumference, and is arranged at one end of a space surrounded by these support rods to abut one end of the coil spring to contract the coil spring. a first coil spring contraction mechanism capable of engaging with the other end of the coil spring at the other end of the space and collaborating with the first coil spring contraction mechanism to contract the coil spring; The second coil spring contraction mechanism is provided with a guide groove formed along the longitudinal direction of each of the support rods, and is provided so as to be movable forward and backward with respect to the guide groove. a hook capable of locking onto the other end and moving along the guide groove; and a hook having one end connected to the hook and having an intermediate portion extending along the guide groove and connected to a female threaded portion at the other end of the support rod. The strut assembly is composed of a threaded shaft whose other end protrudes from the support rod, and an operation handle attached to the other end of the threaded shaft for rotating the threaded shaft, making it easy to disassemble the strut assembly.・In addition to being able to perform assembly work in a short time, it also has the advantage of being fully compatible with various coil springs.

[Brief explanation of the drawing]

1 to 13 show a strut assembly disassembly and assembly device as an embodiment of the present invention.
An elevational view of the device seen from a side other than the one shown in the figure, FIG. 3 is a plan view thereof, FIG. 4 is a schematic configuration diagram showing the second coil spring contraction mechanism, and FIG. 5 shows the hook. 6a is a perspective view showing the suspension attachment, FIG. 6b is a perspective view showing the jack attachment, and FIG. 7 is an elevational view for explaining its function. Figure 8 is the seventh
Figures 9 and 10 are partial diagrams showing the part shown in the figure, and Figures 9 and 10 are schematic diagrams to explain how to lock the coil spring with the hook. Figure 11 is a partial diagram showing the coil spring and the Atsupa sheet that come off slightly when disassembled. Figures 12a and 12b are schematic diagrams showing how to align the shaft center of the strut with the hole in the top sheet during assembly, and Figure 13 is a schematic diagram showing how to align the shaft center of the strut with the hole in the top sheet during assembly. FIG. 14 is a schematic diagram showing a state in which the tip slightly protrudes from the upper end of the coil spring, and FIG. 14 is a perspective view of a conventional strut assembly disassembly and assembly device. 1... Board, 2... Support rod,
3...Coil spring, 4...Lower seat, 5
...Hydraulic jack, 5A...Cylinder part, 5B...
... Rod, 6... Jacket attachment, 7...
...Strut fixing part, 7A...Attachment for rear suspension, 7A-1...Pin hole, 8...
...Strut assembly/attachment mounting base, 9...Roller, 10...Pin, 11...Judge lever, 12...Judge hydraulic release valve,
13...Strut, 14...Atsupashito, 1
5... Insulator, 16... Guide groove, 17
... Cursor, 18 ... Hook, 18a ... Hook part, 18b ... Long groove, 19 ... Stopper, 2
0, 21...Pin, 22...Screw shaft, 23...Roller, 24...Female threaded portion, 25...Operation handle, 26...Moving frame, 27...Wheel,
SC1...First coil spring contraction mechanism, SC
2...Second coil spring contraction mechanism.

Claims (1)

[Scope of utility model registration request] A strut assembly disassembly and assembly device that disassembles and assembles the strut assembly by contracting the coil spring of the strut assembly is equipped with at least three support rods protruding along the circumference, and is equipped with at least three support rods protruding along the circumference. a first coil spring contraction mechanism disposed at one end of the enclosed space and capable of contracting the coil spring by contacting one end of the coil spring; a second coil spring contraction mechanism capable of locking and collapsing the coil spring in cooperation with the first coil spring contraction mechanism; a guide groove formed along the longitudinal direction; a hook that is provided so as to be movable forward and backward with respect to the guide groove and can be engaged with the other end of the coil spring and moved along the guide groove; The intermediate portion extends along the guide groove and is screwed into the female threaded portion of the other end of the support rod, and the other end is attached to the screw shaft protruding from the support rod and the other end of the same screw shaft. 1. A strut assembly disassembly and assembly device comprising: an operating handle for rotating the same threaded shaft;