JP2574237Y2 - Component press-in device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to a McPherson strut type front suspension mechanism of a vehicle in which a coil spring is incorporated in a narrow part, for example, to absorb a shock applied to a vehicle body from a road surface. The present invention relates to a member press-fitting device capable of easily attaching a bump rubber to a strut.

[0002]

2. Description of the Related Art As described above, a front suspension of an automobile is an integral type having a strut provided inside a coil spring which receives a vertical load on an axle. The strut has a shock absorber connected at the lower end thereof to a lower arm (transverse link) via a ball joint. The strut incorporates a coil rubber and then a bump rubber for absorbing shock. In this type of assembling work, after assembling a coil spring into a strut, a bump rubber is press-fitted while manually pulling out a rod above the strut.

[0003]

In the above-mentioned conventional assembling work, the outer diameter of the jig is limited because the bump rubber is pressed into a narrow place after the coil spring is assembled. In addition, such a jig needs to be reduced in weight in terms of work efficiency because it is a hand tool that is used by hanging it from the ceiling.
In addition, it is necessary to be applicable to incorporation of various bump rubbers suitable for various types of struts, and at present, there is no suitable tool. This invention is based on a variety of models by incorporating a member that is compatible with various types of workpieces, and then using a built-in cam to determine the push-in position of the bump rubber suitable for various types of workpieces while holding and pulling the rod of the workpiece. It is another object of the present invention to provide a member press-fitting device capable of press-fitting a member suitable for a work.

[0004]

SUMMARY OF THE INVENTION The present invention firstly provides a vertically movable member press-fitting device for press-fitting a member into a work, which is located above and opposed to a holding means for holding the work. A fluid cylinder, a piston shaft that can be moved up and down by the fluid cylinder, a pair of links that operate in conjunction with the upward movement of the piston shaft, a pair of arm members that interlock with the movement of the link, and the pair of arms. A pair of rod gripping claws which are built into the member and open and close in conjunction with the movement of the arm member, a pin projecting perpendicularly to the piston shaft, and a rising movement of the piston shaft engaged with the pin at a lowered position of the main body. And a first cam that converts the force into the gripping action of the rod gripping claw, and a press-fit position of a dedicated member that is engaged with a pin protruding from the piston shaft and that is incorporated into a different type of workpiece. 2 cams inside the body By doing so, the above problem was solved.In a particularly preferred embodiment, in addition to the above configuration, a handle was provided on the main body, and a switching valve for switching to the fluid cylinder in conjunction with the movement of the handle was provided. Was provided so that the work could be done easily by hand.

[0005]

[Function] At the position where the coil spring is incorporated into the strut,
The rod-holding claw is opened by the action of the link mechanism built in the press-fitting device by bringing the press-fitting device close to the device, and the rod is gripped. Next, when the rod of the strut is grasped and lifted, the withdrawal of the rod is started. When the rod reaches a rising position suitable for a specific work, the rod is completely pulled out, and the bump rubber, which is a member, is pressed in. The members suitable for different types of workpieces may be pulled out to a predetermined raised position in accordance with the instructions of the cams according to the cams built in the main body, so that the members can be securely pressed into various types of workpieces.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. It's just

FIG. 1 is a schematic view of a strut 10 which is a work and a member press-fitting device 1 which is located above and opposed to the work. Strut 10 is strut fixing bracket 1
1 and incorporates a spring 12 for supporting vertical loads on the front suspension. Further, a state in which the bump rubber 13 is inserted into the rod 14 is shown. On the other hand, the member press-fitting device 1 is used by being suspended from a ceiling of a work place (not shown). Then, a rod gripping claw 4 described in detail later is located below.

The details of the internal structure of the member press-fitting device 1 according to this embodiment will be described with reference to FIGS. The air cylinder 3 is located above the main body 1 and its piston shaft 5 is
Is inserted vertically into the inside of the piston shaft, extends vertically downward, is screwed into a male screw 8 formed at the distal end of the piston shaft, and is fixed to the distal end of the piston shaft 5 by a round nut 6. Extend. Further, a pair of links (link mechanisms) 15 are supported by the shaft body 7 at upper positions of the shaft body 7, and the first pins 18 project from both sides in the horizontal direction.
Is pivotally supported on the fulcrum. The link 15 extends upward in a V-shape from the position of the fulcrum of the pin 18, and the other end located above the link 15 is connected to the upper end of a pair of arm members 16 located on both left and right sides of the shaft 7. Stopped (supported).

The base of the rod gripping claw 4 is built in the lower end of the arm member 16. The rod gripping claw 4 is composed of a pair of rod gripping claw bodies 17 having a substantially split structure,
And a shaft portion 17b extending upward from the base of the upper end of the rod gripping claw body 17, 17. The shaft portion 17b is a U-shaped groove 22 cut in the longitudinal direction from the lower end of the shaft body 8.
(See FIG. 3), and a second pin 21 projecting to both sides in the horizontal direction is passed through the shaft portion 17b so that the second pin 21 can move vertically. The second pin 21 guides the downward movement of the piston shaft 5 while its position is regulated in the rotation direction by the second pin 21. Rod gripping claw body 17,
The inner surface 20 facing 17 is a bump rubber contact surface, and is formed of a material having elasticity so as not to damage the bump rubber when the bump rubber is pressed.

The first pin 18 and the second pin 21
Is engaged with a longitudinal guide groove 9 formed in the main body 1 as shown in FIG. 3 so as to be able to move up and down along the guide groove 9 as the piston shaft 5 moves up and down. ing. As shown in FIG. 4, a lower cam 25 provided with a spring 27 </ b> A is provided at a lower end side of the lower end of the guide groove 9 so as to straddle the guide groove 9. The formed pair of stoppers 26 grips the second pin 21 when the piston shaft 5 rises, temporarily hinders the rise, and raises only the shaft body 7 along the guide groove 9 to move the links 15, 15. To operate. One arm member 16,
16 is a pair of stoppers 26, a second pin 21, and a shaft 1
7b, since the position is held via the internal rod gripping claw bodies 17, 17, when the piston shaft 5 is raised,
As the shaft 7 is raised, the upper ends of the pair of links 15 are spread in the widening direction with the first pin 18 as a fulcrum, whereby the pair of arm members 1 locked on the upper ends of the links 15 are provided.
At the same time as the upper end of the opening 6 is opened, the lower end side of the arm member 16 is contracted, that is, the interval between the lower ends of the arm members 16 that house the rod gripping claw bodies 17, 17 is reduced. Since the rod gripping claw bodies 17, 17 are formed so as to be gradually thinner as the opposing surfaces 20, 20 approach the distal end, when the distance between the arm members 16, 16 becomes narrower, the rod gripping claw bodies 17, 17 become smaller. , 17 can be narrowed, and the screw 19 of the strut 10 as a work can be gripped.

Further, above the lower cam 25, upper cams 28, 28 each composed of a pair of cam plates opposed to each other with the guide groove 9 interposed therebetween are located similarly to the lower cam. Upper cam 2
Reference numerals 8 and 28 denote two narrow cam portions 28A and 28B which define the ascending position of the piston shaft 5 suitable for the press-fitting allowance of the two types of bump rubbers 14 which are press-fitted into the two types of struts 10 in this embodiment. Is formed. Reference numeral 30 denotes a collar fitted to the first pin 18, and 31 denotes a second pin 2 similarly.
1 is a collar fitted to the lower cam 25 and the upper cam 28. 27B is a compression spring incorporated in the upper cam 28.

Next, the operation of the member press-fitting device according to the present invention will be described. An operator grasps the main body 1 suspended from the ceiling through an appropriate means such as a chain in the upper hole 32 and grasps the handle 2 as shown in FIG. As shown in (1), it is lowered to the vicinity of the strut 10 held by the fixing bracket. At that time, the handle 2 is turned to extend the tension coil spring 34 attached to the handle 2.
And the lever 33 is rotated. Then, the switching valve 35 provided at the upper portion is operated, and the air cylinder 3 is operated. Then, the shaft body 7 attached to the tip of the piston shaft 5 is connected to the lower pin 2 inserted in the lower cam 25.
It descends until it reaches the bottom of the U-shaped groove 22 through which 1 has been inserted. When the lower second pin 21 reaches the bottom of the U-shaped groove 22,
The link 15 acts to shorten the space above the two arm members 16 and narrow the space on the opposite side of the member, so that the rod gripping claws 17 are expanded and the strut 10 held by the fixing bracket 11 is opened. Hold the upper rod 14 with the gripper 17
Is housed in the holding portion 37 at the front end.

At this time, when the handle 2 is operated again to switch the switching valve 35, the lower second pin 21
Raises the piston shaft 5 in a state where the piston shaft 5 is fitted into the lower cam 25. Then, the shaft 21 attached to the tip of the pin 21 is guided by the pin 18 into the U-shaped groove 22 and rises, and only the link 15 is operated to expand the interval above the arm member 16 in a pair, By shortening the other distance of the arm member,
The interval between the rod gripping claws 17, 17 built therein is reduced, and as a result, the rod of the strut 10 is gripped. When the piston shaft 5 is further raised, the engagement of the cam 25 is released against the biasing force of the spring 27A of the lower cam 25, and the second pin 21 leaves the lower cam 25 to pull out the rod 14. Start. Further, when the piston shaft 5 continues to rise, the second pin 21 and the first pin 1
8 is also guided by the longitudinal groove 9 and rises. First, the first pin 18 pushes and expands the facing distance of the upper cam 28 and enters the upper cam 28. As the piston shaft is raised, the second pin 2
1, When the first pin 18 reaches the cam A position or the B position, the rod 14 is completely pulled out, and the press-fitting of the bump rubber 13 into the strut is completed. The raising of the pin to the position A of the cam is stopped or the position of the pin is raised to the position B, which may be determined in advance by a predetermined work.

[0014]

According to the present invention, as described above, when the bump rubber is pressed into the strut as described above,
The operation was extremely easy because the strut rod was clamped, and the rod was pulled out and the bump rubber was press-fitted only by moving the piston shaft to the position indicated by the cam. In addition, since the cam is built in the main body, the outer diameter of the jig is small, and the structure is simple, so that there are many excellent effects such as light weight and easy handling.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a partially cutaway front view of the member press-fitting device according to the present invention.

FIG. 3 is a partially cut-away side view of FIG. 2;

FIG. 4 is a front view of a cam mechanism used in the present invention.

[Description of sign]

 2 Handle 3 Fluid cylinder 4 Rod gripping device 5 Piston shaft 10 Work (strut) 11 Holding means 13 Member (bump rubber) 15 Link 16 Arm member 18 First pin 21 Second pin 25 Lower cam 28 Upper cam 35 Switching valve

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B62D 65/00 B23P 19/02 B23P 21/00 303

Claims (1)

(57) [Scope of request for utility model registration] 1. An ascending and descending member press-fitting device which is positioned above and opposite to a holding means for holding a work and press-fits a member into the work while pulling out the work, wherein a fluid provided at an upper portion of the device is provided. A piston shaft lifted and lowered by a cylinder, a shaft fixed to the tip of the piston shaft, and a link mechanism interlocked with the upward movement of the piston shaft with a first pin supported through an upper position of the shaft as a fulcrum. , it engaged with the link mechanism, the swing in conjunction with the link mechanism
And a pair of arm members, which are built in the pair of arm members and whose distal ends are opened according to the swing.
A pair of rod gripping claws to be closed, a second pin penetratingly supported at a lower position of the shaft, and engaging and holding the second pin at a lowered position of the piston shaft .
That the lower cam, said first pin engaging an internal and upper cam defining a press-fit position of the dedicated member to be incorporated into different types work, the second at a lowered position of the piston shaft by the lower cam of
After engaging and holding the pin and engaging and holding the second pin.
The above-mentioned link is used as the acting force
The arm member is connected to the tip of a pair of rod gripping claws via a locking mechanism.
Swings in the direction in which
A member press-fitting device that provides a gripping action .