JPH1170480A - Part mounting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To design a part mounting tool, which applies pneumatic pressing force aimed at a support to a part to be mounted thereon that exerts repulsive force against the force acting in the direction of separation from the support when mounted thereon, to mount such a part on a support efficiently while preventing an excessive load from acting on the support. SOLUTION: A piston 291 is slidably fitted in a cylinder bore 361 in a cylinder body 281 ranging with a handle portion while defining a pneumatic chamber 40 between itself and the back wall of the bore 361 . The piston 291 is mounted coaxially with a head 301 adapted to hold a part 14 to be mounted at its tip. The head 301 is pressed by a spring 31 in the direction for decreasing the volume of the chamber 40 to press the piston 291 in its outermost limit in the bore 361 forward by a preset distance and to release the pneumatic pressure in the chamber 40 out by way of a pneumatic pressure release means 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a component to a support, the component having a resilient force against a force in a direction of detaching from the support when mounted on the support. The present invention relates to a component mounting tool for applying a pressing force by air pressure toward a component to be mounted.

[0002]

2. Description of the Related Art Conventionally, a stopper rubber for absorbing an impact when a trunk lid or a hood of a vehicle is closed, for example, is attached to the stopper rubber in a state of being fitted into a mounting hole provided in a mounting frame on the vehicle body side. Although it is designed to exert elasticity and maintain a fixed state to the mounting frame, such a stopper rubber is applied by a worker applying a pressing force to the stopper rubber one by one.
It is mounted on the mounting frame.

[0003]

As described above, if the worker attaches the parts to be attached such as the stopper rubber one by one, the efficiency of the attaching work is inferior. Therefore, it is conceivable to use a mounting tool in which a pressing force is applied to a part to be mounted toward a support such as a mounting frame by pneumatic pressure. In this case, an excessive load is prevented from being applied to the support. It is desirable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to efficiently perform an operation of mounting a component to be mounted on a support while preventing an excessive load from acting on the support. It is an object of the present invention to provide a component mounting tool which is made in accordance with the above.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, when mounted on a support, an elastic force against a force in a direction of detaching from the support is exerted. What is claimed is: 1. A component mounting tool for applying a pressing force of pneumatic pressure toward a support to a component to be mounted on the support in order to mount the component on the support. A cylinder body having a hole and connected to the grip portion, a piston formed in the cylinder hole with a pneumatic chamber formed between the rear end wall of the cylinder hole and the cylinder body; A head capable of holding a mounting part at a front end and being coaxially connected to the piston;
A spring for urging the head in a direction to reduce the volume of the pneumatic chamber; and a pneumatic release for releasing the air pressure of the pneumatic chamber as the piston advances a predetermined distance from a retreat limit in the cylinder hole. Means.

According to the structure of the first aspect of the present invention, if the gripping portion is gripped while holding the part to be mounted at the front end of the head and compressed air is supplied to the pneumatic chamber, the head is moved together with the piston. Since the component is driven forward and a pressing force acts on the component to be mounted toward the support, the component to be mounted can be mounted on the support while improving the efficiency of the mounting operation. Also, when the air pressure in the pneumatic chamber is released by the air pressure releasing means in response to the piston moving forward from the retreat limit by a predetermined distance, the head and the piston are caused to retract by the spring force of the spring, and the air pressure released by the air pressure releasing means is reduced. The piston and the head are driven forward again in response to the release state being released.
If the mounting of the part to be mounted on the support is not completed in the forward operation, the head can be repeatedly advanced and retracted as long as compressed air is supplied to the pneumatic chamber.
The pressing force is repeatedly applied to the component to be mounted, so that the component to be mounted can be securely mounted on the support. In addition, the spring functions to prevent the piston from being detached from the cylinder body, and to prevent the forward movement speed of the piston and the head due to the action of the compressed air to the pneumatic chamber from becoming unnecessarily high. This can prevent an excessive load from acting on the support.

[0007] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the invention described in the above, the air pressure releasing means opens the air pressure chamber to the outside in response to the piston moving forward a predetermined distance from the retreat limit in the cylinder hole, and According to such a configuration, the air pressure releasing means can be configured with a simple configuration in which only the air release hole is provided in the cylinder body.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the piston is rotatably fitted into the cylinder hole, and one end of the spring, which is a coil spring, is connected to the cylinder hole. The other end of the spring is engaged with a spring receiving portion which is connected to a cylinder body and is integral with the head at a position eccentric from the axis of the head.

According to the third aspect of the present invention, when the piston and the head move forward when the compressed air is supplied to the pneumatic chamber, the spring, which is a coil spring,
When the contraction operation is performed to apply a force in the turning direction to the head in response to the extension operation and to apply a force in the backward direction to the piston and the head in response to the air pressure release by the air pressure release means, the operation is reverse to that in the extension operation. Is applied to the head in the direction of rotation. Therefore, when the component to be mounted is attached to the support more effectively by applying pressure to the support while applying the rotating force, the attachment to the support can be performed more effectively.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect of the present invention, the head is provided with an eccentric weight eccentric from the rotation axis thereof. According to this, the force in the rotating direction applied to the head by the coil spring is amplified by the eccentric weight, and the component to be mounted can be more effectively mounted on the support.

According to a fifth aspect of the present invention, in addition to the configuration of the second aspect of the present invention, a pressure adjusting valve for adjusting an amount of air discharged from the air vent hole is attached to the cylinder body. According to such a configuration, it is possible to adjust the pressing force acting on the mounted component,
The versatility can be improved by adjusting the pressing force according to the component to be mounted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

FIGS. 1 to 9 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view showing a state in which a license plate is fastened to a bumper, and FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. FIG. 3 is a perspective view of a nut and a component mounting tool, and FIG.
3 is a cross-sectional view taken along line 4-4 in FIG. 3, FIG. 5 is a front view of the nut, FIG. 6 is a cross-sectional view corresponding to line AA in FIG. FIG. 8 is a sectional view corresponding to the line BB of FIG. 5 at the early stage of the mounting operation by the mounting tool, FIG. 8 is a sectional view corresponding to the line AA of FIG. 5 at the end of the mounting operation by the component mounting tool, and FIG. FIG. 6 is a cross-sectional view corresponding to line BB of FIG. 5 at the end of a mounting operation by a mounting tool.

First, in FIG. 1, a vehicle is provided with a bumper 11 made of a synthetic resin as a support, and a license plate 12 is inserted through the license plate 12 and the bumper 11 on the surface side of the bumper 11. A plurality of screw members 13 are fastened to the rear surface of the bumper 11, and a metal nut 14 as an attached part to which each screw member 13 is screwed is attached in advance before the number plate 12 is fastened. Have been.

With reference to FIGS. 2 to 5, the nut 14 includes a metal nut body 15 and a nut body 15.
Iron-based metal plate member 1 fixed by swaging or the like
6. The nut body 15 has a cylindrical portion 15 having a screw hole 17 into which the screw member 13 is screwed.
a, and a flange portion 15b extending outward from the cylindrical portion 15a. The cylindrical portion 15a is provided coaxially with the screw hole 17 in a mounting hole 18 provided in the bumper 11.
Are fitted. When the cylindrical portion 15a is fitted into the mounting hole 18 from the back side of the bumper 11 until one end surface thereof is flush with the surface of the bumper 11, the other end of the cylindrical portion 15a is 11 has a length protruding from the back surface thereof.
b is brought into contact with the back surface of the bumper 11 when the cylindrical portion 15
The one end surface of the cylindrical portion 15a is integrally connected to a portion near the other end of the cylindrical portion 15a such that the one end surface is substantially flush with the surface of the bumper 11.

On the back surface of the bumper 11, a pair of support pins 19, 19 are integrally formed on both sides of the mounting hole 18 in a direction along one diameter line of the mounting hole 18.

In a vehicle for the United States, the license plate 12 is not directly fastened to the surface of the bumper 11, but a bracket (not shown) is fastened to the surface of the bumper 11, and the license plate 12 is attached to the bracket. In correspondence with such a vehicle for the United States, a cylindrical boss 21 having a tap hole 20 for fastening the bracket is integrally provided on the back surface of the bumper 11. When the license plate 12 is fastened to the surface of the bumper 11,
The opening end of 0 is closed with a license plate 12.

The flange 15b is formed in an elliptical shape that is long in a direction along the one diameter line L of the screw hole 17.
When the cylindrical portion 15a is fitted into the mounting hole 18, the arrangement direction of the two support pins 19, 19 and the one-diameter line L are orthogonally connected to the cylindrical portion 15a in an arrangement.

The plate member 16 has a rectangular flat plate portion 16a extending in a direction perpendicular to the one-diameter line L in a plane perpendicular to the axis of the screw hole 17, and is connected to both sides of the flat plate portion 16a at right angles. It has a pair of engaging portions 16b, 16b provided, and is formed to have a substantially “U” -shaped cross-sectional shape opened to the opposite side to the bumper 11. This plate member 1
6, an insertion hole 22 through which the other end of the cylindrical portion 15 a of the nut main body 15 is inserted is provided at a central portion in the longitudinal direction of the flat plate portion 16 a, and the other end of the cylindrical portion 15 a is inserted into the insertion hole 22. In a state where the flat plate portion 16a is in contact with the rear surface side of the flange portion 15b, for example, the flange portion 15b and the flat plate portion 16a are swaged together at two caulking portions 23, 23, thereby forming the nut body 15 and the plate member. The nuts 14 are formed by mutually coupling the nuts 16.

The plate member 1 is located on both sides of the nut body 15.
The flat plate portion 16a is provided with resilient fitting portions 24 for resiliently fitting the support pins 19, 19, respectively.
The resilient fitting portion 24 has a base end of a plurality of, for example, four resilient claws 25 that make the distal end edges contact a plurality of circumferential positions on the outer surface of the support pin 19 and are connected to the flat plate portion 16a. Are formed so as to be inclined inward in the radial direction of the support pin 19 from the base end toward the distal end edge.

According to the elastic fitting portion 24, when the support pin 19 is fitted to the elastic fitting portion 24 by moving the nut 14 toward the back surface of the bumper 11, the outer surface of the support pin 19 is Each claw 2 with its leading edge in contact with each other
The support pins 19 can be easily fitted to the resilient fitting portions 24 by bending 5, 25. On the other hand, when an external force is applied to the nut 14 in a direction away from the rear surface of the bumper 11 in a state where the support pin 19 is fitted to the elastic fitting portion 24, each elastic claw 25, 25. Each of the resilient claws 25, 25,... Exerts a resilient force opposing the support pin 19 moving in a direction in which the support pin 19 is disengaged from the resilient fitting portion 24. Become. That is, the resilient fitting portion 24 allows the nut 14 to move close to the bumper 11 but exerts a resistance to the movement of the nut 14 in a direction away from the bumper 11. In a state where the cylindrical portion 15a is fitted in the mounting hole 18, the cylindrical portion 15a exerts a resilient force against a force in a direction in which the cylindrical portion 15a is separated from the mounting hole 18.

[0022] constituted nut 14 as described above, which is mounted on the back side of the bumper 11 with the component installation tool 26 _1, the component mounting tool 26 _1,
A tool body 27 ₁ , a cylinder body 28 ₁ fixed to the tool body 27 ₁ , a piston 29 ₁ slidably fitted to the cylinder body 28 ₁ , and a nut 14 fitted and held at the front end. comprises a head 30 ₁ is integrally connected to the and the piston 29 ₁ coaxially, a spring 31 provided between the cylinder body 28 ₁ and the piston 29 _1, and an operation member 32 provided on the tool body 27 ₁ as.

The tool main body 27 ₁ is formed in a substantially “L” shape in which a mounting portion 27 b is provided at one end of a grip portion 27 a for an operator to grip at substantially right angles.
Is provided with a screw hole 33 so as to open at the end face. The cylinder body 28 ₁ is intended to be formed in a cylindrical shape, in its rear end (left end in FIG. 4), the threaded hole 33
Is integrally provided with a step. By Thus to be screwed into the mounting cylinder portion 34 threaded hole 33, which cylinder body 28 ₁ is fixed to the tool body 27 ₁ of the mounting portion 27b, a rear end and the mounting of the cylinder body 28 ₁ An annular seal member 35 surrounding the mounting tube portion 34 is sandwiched between the end surfaces of the portion 27b.

[0024] The cylinder body 28 _1, and the cylinder bore 36 ₁ is provided having an open front end, the cylinder bore 36 ₁
Rear communication hole 37 coaxially connected to form a step is provided in the mounting cylinder portion 34 of the passage 38 leading to the communication hole 37 is provided in the tool body 27 _1. On the other hand, the other end of the grip portion 27a of the tool body 27 ₁ is connected conduit 39 leading to the compressed air source (not shown), the tool body 27 ₁ of the grip portion 27a, holding the grip portion 27a An operating member 32 operated by an operator is provided, and the communication between the pipe line 39 and the passage 38 is switched by the operation of the operating member 32.

[0025] The cylinder bore 36 _1, the piston 29 ₁ to form a pressure chamber 40 between the rear end of the cylinder bore 36 ₁ is slidably fitted in the front end of the piston 29 ₁ cylinder body from 28 ₁ projecting forward. Moreover the piston 29 _1, restricting collar portion 41 for restricting the retreat limit position of the piston 29 ₁ in contact with the front end of the cylinder body 28 ₁ is integrally provided.

The head 30 ₁ is provided with component holding portion 30a formed into a rectangular block shape as possible to fit from behind the plate member 16 is a cross-sectional substantially "U" shaped in the nut 14, holds the component and a connecting shaft portion 30b which is integrally connected to the part 30a, the connecting shaft portion 30b is provided integrally coaxially and the front end of the piston 29 _1. Therefore, the head 30 ₁ operates together with the piston 29 ₁ .

The nut 14 on the front surface of the component holder 30a in the head 30 _1, held in the component holding section 30a
Recesses 44, 44 capable of accommodating the two projectile fitting portions 24, 24
Are provided with shapes corresponding to the respective resilient fitting portions 24, 24, and insertion holes 45, 45 for inserting the support pins 19, 19 fitted in the resilient fitting portions 24, 24 are provided. Can be

In the front surface of the component holding portion 30a, a support hole with a bottom extends in the center between the concave portions 44, 44 in parallel with the axis of the insertion holes 45, 45 and opens on the front surface of the component holding portion 30a. A pin 47 inserted into the screw hole 17 of the nut 14 held by the component holding portion 30a is inserted into the support hole 46. In addition, a bolt 48 for contacting the tip of the pin 47 at an intermediate portion of the support hole 46 to determine the axial position of the pin 47 in the support hole 46 is screwed to the component holding portion 30a so as to be able to advance and retreat. In addition, magnets 56 are embedded in the front surface of the component holding portion 30a, for example, so as to be arranged around the pin 47.

Further, the bumper 1 is mounted on the component holding portion 30a.
1 is fitted to substantially half the circumference of a boss 21 protruding from the back surface of the boss 21, that is, the head 30 ₁ for the mounting hole 18.
A guide groove 49 having a substantially semicircular shape for determining the position of the guide groove 49 is provided.

The spring 31 is a coil spring which surrounds the front side and a portion of the piston 29 ₁ of the cylinder body 28 _1, one end of the spring 31, a bottomed provided on the outer surface of the cylinder body 28 ₁ engaged with the engaging holes 50, the other end of the spring 31 is engaged with regulating collar portion 41 of the piston 29 _1. The spring force exerted by the spring 31 causes the piston 29 ₁
Is urged in a direction to reduce the volume of the pneumatic chamber 40.

The cylinder body 28 _1, air vent hole 51 of the air pressure release means is provided. The air vent hole 51
The piston 29 ₁ is the position for opening the air chamber 40 to the outside in response to forward a predetermined distance from the rearmost, is provided over between the inner and outer surfaces of the cylinder body 28 ₁ in the cylinder bore 36 within _1.

Next, the operation of the first embodiment will be described. The resilient fitting portion 24 provided on the nut 14 has a plurality of outer peripheral surfaces of a support pin 19 which is integrally provided on the back surface of the bumper 11 in the circumferential direction. The base ends of a plurality of, for example, four resilient claws 25, 25, of which the leading edges are brought into contact with the locations are connected to the flat plate portion 16a, and the resilient claws 25, 25,. The support pin 19 is formed to be inclined inward in the radial direction of the support pin 19 toward the front end edge. Therefore, when the nut 14 is moved toward the rear surface of the bumper 11 and the support pin 19 is fitted to the resilient fitting portion 24, each of the resilient claws 2 whose leading edges contact the outer surface of the support pin 19 respectively.
The support pins 19 can be easily fitted to the resilient fitting portions 24 by flexing the 5, 25..., While the support pins 19 are fitted to the resilient fitting portions 24. When an external force acts on the nut 14 in a direction away from the rear surface of the bumper 11, the respective resilient claws 25, 25... Deflect so that their leading edges bite into the outer surface of the support pin 19, and the support pin 19 Each of the resilient claws 25, 25,.

Therefore, when the nut 14 is attached to the back surface of the bumper 11, the pair of support pins 19, 19 provided integrally on the back surface of the bumper 11
The bumper 1 is easily operated by simply fitting the cylindrical portion 15a into the mounting hole 18 so as to fit the bumpers 1 and 4, respectively.
The nut 14 can be attached to the rear surface of the bumper 1, and the nut 14 does not easily come off the bumper 11 after the attachment.

Moreover, when the screw member 13 is screwed into the screw hole 17 of the nut 14 attached to the back surface of the bumper 11, a plurality of, for example, two, resilient fitting portions 24 around the screw hole 17 are provided. Since the support pins 19 are fitted in the nut 14, the nut 14 does not rotate together with the rotation of the screw member 13.

The nut 14 includes a nut body 15 having a screw hole 17 and a plate member 16 extending along one diameter line of the screw hole 17 in a plane perpendicular to the axis of the screw hole 17. Therefore, a nut 14 having a special structure is attached to a nut member 15 having a general shape by a plate member 16.
Can be easily configured simply by fixing the Further, the resilient fitting portions 24, 24 are provided on the plate member 16 at both sides of the nut body 15, respectively.
6, the resilient fitting portions 24, 24 can be easily formed.

[0036] by using the parts installation tool 26 ₁ nut 14
When performing the mounting operation, as shown in FIGS. 6 and 7, the fitting nut 14 to the front end of the head 30 ₁ in the component mounting tool 26 ₁ and allowed retention. In this case, and the plate member 16 of the nut 14 is formed in a substantially cross-sectional "U" shape, the component holder 30a of the head 30 ₁ is formed in a rectangular block shape so allowed to fitting the plate member 16,
Since the pin 47 provided in the head 30 ₁ is inserted into the screw hole 17 of the nut 14, results in the nut 14 is positioned and held available in the head 30 ₁ detachable, in the positioning holding state, the nut 14 Plate member 16
There therefore is attracted to the magnet 56, the nut 14 is not entirely easy to fall off from the head 30 _1.

The grip of the tool body 27 ₁ of the grip portion 27a in a state where the nut 14 to the head 30 ₁ is positioned and held, when as allowed to fit a boss 21 into the guide groove 49 closer to the nut 14 on the rear surface of the bumper 11 The pin 47 penetrates substantially coaxially through the mounting hole 18 of the bumper 11, and the two support pins 19, 19 of the bumper 11 are located at positions substantially corresponding to the two elastic fitting portions 24, 24 of the nut 14. Therefore, if compressed air is supplied to the pressure chamber 40 by operating the operation member 32, the piston 29 ₁ integrally with the head 30 ₁ is driven forward, as shown in FIGS. 8 and 9, each bullet Hatsuhama The nut 14 is attached to the back surface of the bumper 11 such that the support pins 19, 19 are resiliently fitted to the joints 24, 24, respectively, and the cylindrical portion 15a of the nut body 15 is fitted to the mounting hole 18. .

Further the air pressure in the pneumatic chamber 40 in response to piston 29 ₁ is advanced by a predetermined distance from the retraction limit is released by the air vent hole 51, the head 30 ₁ and the piston 29 ₁ backward by the spring force of the spring 31 will be activated, the air vent hole 51 is piston 29 ₁ and the head 30 ₁ is driven forward again in response to being closed by the piston 29 _1. Thus when the attachment to the bumper 11 of the nut 14 in one of the forward operation of the head 30 ₁ is not completed, as long as it supplies compressed air to the pneumatic chamber 40, forward of the head 30 _1, repeating the backward several times Is made, and the pressing force is repeatedly applied to the nut 14,
The nut 14 can be securely attached to the bumper 11.

The mounting of the nut 14 to the bumper 11 is completed.
After completion, the part mounting tool 26 ₁Or bumper 11
The part mounting tool 26₁Using
The nut 14 can be efficiently attached to the bumper 11.
It works.

By the way, in the component mounting tool 26 ₁ , the spring 31 has the piston 29 _{1 and the} cylinder body 28 ₁
Of the piston 2 by the action of compressed air on the pneumatic chamber 40.
It is possible to prevent the forward movement speed of the head 9 ₁ and the head 30 _{1 from} becoming unnecessarily high, thereby preventing the nut 14 from hitting the bumper 11 by impact.

[0041] Further in the cylinder body 28 _1, the piston 2
9 Since ₁ is an air vent hole 51 for opening the air chamber 40 to the outside in response to forward a predetermined distance from the retraction limit is provided, with a simple configuration in which only air vent hole 51 is provided in the cylinder body 28 _1, air pressure The configuration for releasing the air pressure from the chamber 40 can be simplified.

FIG. 10 shows a second embodiment of the present invention, in which parts corresponding to those of the first embodiment are denoted by the same reference numerals.

[0043] parts installation tool 26 ₂ tool provided in the main body 2
7 ₂ of the attachment portion 27b ', a fitting hole 52 so as to be opened on the end face, than the fitting hole 52 diameter of the screw hole 33
Are provided coaxially with a step. On the other hand, cylinder body 2
8 _2, which is formed into a cylindrical shape the rear portion so as to allowed to fit in the fitting hole 52, the rear end thereof, the mounting cylinder portion 44 'is screwed into the screw hole 33 It is provided integrally with a step. Thus, the mounting cylinder 34 'has the screw hole 3
By being screwed into 3, which cylinder body 28 ₂ is fixed to the tool body 27 _{and second} mounting portion 27b ', and the rear end of the cylinder body 28 _2, between the fitting hole 52 and threaded hole 33 An annular seal member 35 surrounding the mounting cylinder portion 44 'is sandwiched between the stepped portions.

[0044] The cylinder body 28 _2, the open cylinder hole 36 ₂ is provided a front end, the cylinder bore 36 ₂
Rear communication hole 37 coaxially connected to form a step is provided in the mounting cylinder portion 34 'in the passage 38 leading to the communication hole 37 is provided in the tool body 27 _2.

[0045] The front portion of the cylinder bore 36 _2, cylindrical sleeve 53 has been pressed, the cylinder bore 36 ₂ in the rear side of the sleeve 53, between the rear end of the cylinder bore 36 ₂ piston 29 ₂ forming the pressure chamber 40 is slidably fitted in.

[0046] At the rear end of the connection shaft section 30b in the head 30 _1, the front end of the rod-shaped slider 54 are integrally connected to coaxially and, the slider 54 is coaxial with the rear end to the front end of the piston 29 ₂ Is slidably fitted to the sleeve 53 so as to be connected to the sleeve 53. The slider 54
The abuts the front end of the cylinder body 28 _second slider 54
The flange portion 55 for restricting the retreat limit is provided integrally,
The spring 31 is provided between the cylinder body 28 ₂ and the collar portion 55.

Further to the cylinder body 28 _2, the piston 29
An air vent 51 is provided for opening the pneumatic chamber 40 to the outside as the vehicle ₂ moves forward a predetermined distance from the retreat limit.

Even when such a component mounting tool 26 ₂ is used, the nut 14 (see FIGS. 1 to 9) can be efficiently attached to the bumper 11 as in the case of using the component mounting tool 26 ₁ of the first embodiment. It can be mounted in a special way.

FIGS. 11 to 14 show a third embodiment of the present invention. FIG. 11 is a longitudinal sectional view showing a state in which a stopper rubber is mounted on a mounting frame, and FIG. 12 is a perspective view of a stopper rubber and a part mounting tool. FIG. 13 and FIG.
FIG. 14 is a sectional view taken along line -13 of FIG. 13, and FIG. 14 is a sectional view taken along line 14-14 of FIG.

First, in FIG. 11, a metal mounting frame 58 as a support is provided at the rear of the vehicle.
A rear bumper 63 is attached to the attachment frame 58. A plurality of mounting holes 59 are provided in a portion of the mounting frame 58 that is located forward of the front end of the rear bumper 63. The mounting holes 59 contact the trunk lid 64 when the trunk lid 64 is closed to absorb impact. The stopper rubber 60 as a part to be mounted is mounted on the mounting hole 5.
9 are resiliently fitted to the mounting frame 58.

The stopper rubber 60 includes a stopper main portion 60.
a, an engaging portion 60b, and a neck portion 60c coaxially and integrally connecting the stopper main portion 60a and the engaging portion 60b. The stopper main portion 60a is formed in a truncated cone shape having a smaller diameter as it separates from the mounting frame 58, and the engaging portion 60b is formed in a truncated cone shape having a smaller diameter as it separates from the mounting frame. That is, the stopper main portion 60a and the engagement portion 60b
Are each formed in a truncated cone shape with the attachment frame 58 side having a large-diameter end, and include a stopper main portion 60a and an engagement portion 60.
b is set to be approximately equal to the thickness of the projection 58a of the mounting frame 58, and the diameter of the neck 60c is
9 is set to the inner diameter or less.

The diameters of the large-diameter ends of the stopper main portion 60a and the engaging portion 60b are set larger than the inner diameter of the mounting hole 59, and the engaging portion 60b can be fitted into the mounting hole 59 from the small-diameter end side. It is. In order to reduce the diameter when fitting into the mounting hole 59, the engaging portion 6
0b is provided with a concave portion 60d opened to the small-diameter end side, that is, the front end side.

The stopper rubber 60 is fitted into the mounting hole 59 so that the engaging portion 60b projects from the mounting hole 59. When the stopper rubber 60 is fitted into the mounting hole 59, the stopper main portion 60a and the engaging member 60b are engaged. The mounting frame 58 is sandwiched between the large-diameter ends of the joint 60b. Thus, when a force in the direction of detachment from the attachment hole 59 acts on the stopper rubber 60 in the state of being fitted into the attachment hole 59, the engaging portion 60 b of the stopper rubber 60 is disengaged from the engagement hole 59. Will exert a resilience against the power of

In FIGS. 12 and 13, the stopper
Parts mounting work for mounting the bar 60 to the mounting frame 58
Tool 26_ThreeIs the tool body 27₁And the tool body 27₁Solid
Cylinder body 28 to be worn₁And the cylinder body 28₁Axis
Pis that can be slidably fitted by allowing rotation around the line
Ton 29₁And the stopper rubber 60 is fitted and held at the front end.
Piston 29 as possible₁Coaxially and integrally connected
Head 30_TwoAnd the cylinder body 28₁And piston 2
9₁A spring 31 provided therebetween, and a tool body 27 ₁Established in
Operating member 32 to be operated.

The piston 29 ₁ is integrally provided with a regulating flange 41 as a spring receiving portion so as to contact the front end of the cylinder body 28 ₁ to regulate the retreat limit position of the piston 29 ₁ . Head 30 _2, 'and, the component holding section 30a' component holder 30a is cylindrical 'a, the connecting shaft portion 30b' connecting shaft portion 30b which is integrally connected to the the front end of the piston 29 ₁ They are coaxially and integrally connected.

[0056] the component holder 30 in the head 30 ₂
The a ', a stopper fitting recess 61 which opens to the front surface of the head 30 ₂ to allowed to fit the stopper main portion 60a of the rubber 60, a bottom of the tapered holes corresponding to the stopper main portion 60a is a truncated cone It is provided in a shape. Also head 3
0 on the outer surface of the component holder 30a 'of _2, the head 3
0 ₂ eccentric weight 62 which is eccentric from the axis of rotation is provided integrally so as to project outward.

One end of a spring 31, which is a coil spring surrounding the front side of the cylinder body 28 _{1 and} a part of the piston 29 ₁ , is engaged with the engagement hole 50 of the cylinder body 28 _1. end, as shown in Figure 14, is engaged to the front surface of the restricting flange portion 41 is integral with head 30 _2. That is, the other end of the spring 31 is connected to the piston 29 ₁ and the head 3
0 at a position eccentric from the axis of the ₂ will be engaged with the restricting flange portion 41.

[0058] According to the third embodiment, the fitting into the mating recess 61 of the head 30 _2, while being corresponding to the mounting hole 59 of the mounting frame 58 stopper rubber 60 which holds the piston 29 ₁ and the cylinder body by 28 to supply compressed air to the pneumatic chamber 40 between ₁ allowed to advance actuation piston 29 ₁ and the head 30 _2, allowed exert a pressing force toward the mounting frame 58 side stopper rubber 60, a stopper rubber 60 It can be mounted on the mounting frame 58 so as to fit into the mounting hole 59, and the mounting work efficiency can be improved as in each of the above embodiments.

By the way, the stopper rubber 60, if so entails turning operation during the fitting of the mounting hole 59, but as it can effectively perform the fitting to the mounting hole 59, the piston 29 ₁ and during forward operation of the head 30 _2, spring 31 is a coil spring, allowed exerts a force in the rotational direction to the head 30 ₂ in accordance with the extended operation, also piston 29 ₁ and the head according to the air pressure released by air vent hole 51 the spring 31 to exerting a retracting force to 30 ₂
There will be exerting a force opposite rotational direction to the head 30 ₂ and the elongation at operation when condensation small operation. Therefore, the stopper rubber 60 can be more effectively attached to the attachment frame 58 by pressing the stopper rubber 60 toward the attachment frame 58 while applying a rotating force to the stopper rubber 60. Moreover, since the force in the rotational direction imparted by the spring 31 on the head 30 ₂ is amplified by an eccentric weight 62, it is possible to mount the stopper rubber 60 and more effectively mounting frame 58.

[0060] Figure 15 shows a fourth embodiment of the present invention, the cylinder body 28 to the component mounting tool 26 ₄ comprises ₁
Is provided with a pressure control valve 65 for controlling the amount of air discharged from the air vent hole 51.

[0061] The pressure regulating valve 65 includes a valve housing 67 which is fixed by welding or the like has a valve hole 66 leading to the air vent hole 51 on the inner end side in the cylinder body 28 _1, adjustable forward and backward position by rotational operation An operating member 68 screwed to the outer end side of the valve housing 67; and a valve body 69 integrally provided at the center of the inner end of the operating member 68 to adjust the opening of the valve hole 66. Valve housing 6 around body 69
The operation member 68 is provided with a plurality of open passages 71 through which an inner end passes through a valve chamber 70 formed in the inside of each of the open passages 7.
A sponge-shaped air filter 72 is attached to the outer end of the operation member 68 so that the outer end openings of 1...

According to such a pressure control valve 65, the amount of air discharged from the air vent hole 51 can be freely adjusted by operating the operation member 68. Therefore, it is possible to adjust the pressing force acting on the parts to be mounted such as the stopper rubber 60, and the versatility can be improved by adjusting the pressing force corresponding to various mounted parts.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0064]

As described above, according to the first aspect of the present invention, it is possible to repeatedly apply a pressing force to the support body to act on the mounted part, thereby efficiently mounting the mounted part to the support. It is also possible to prevent an excessive load from acting on the support.

According to the second aspect of the present invention, the air pressure releasing means can be configured with a simple configuration in which only the air vent hole is provided in the cylinder body.

According to the third aspect of the present invention, it is possible to cause the rotating force to act on the mounted component when the pressing force is applied to the mounted component. At the time of attaching a component to be attached, which is more effective for attachment to the body, attachment to the support can be performed more effectively.

According to the fourth aspect of the present invention, the component to be mounted is mounted on the support more effectively by amplifying the force in the rotating direction applied to the head by the coil spring by the eccentric weight. It becomes possible.

Further, according to the fifth aspect of the present invention, the pressing force acting on the component to be mounted can be adjusted, and the versatility can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a license plate is fastened to a bumper in a first embodiment.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is a perspective view of a nut and a component mounting tool.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is a front view of a nut.

FIG. 6 shows an initial state of the mounting operation using the component mounting tool.
FIG. 3 is a cross-sectional view corresponding to line AA of FIG.

FIG. 7 shows an initial state of a mounting operation by a component mounting tool.
It is sectional drawing corresponding to the BB line of FIG.

FIG. 8 is a view at the end of the mounting operation using the component mounting tool.
FIG. 3 is a cross-sectional view corresponding to line AA of FIG.

FIG. 9 shows the final stage of the mounting operation using the component mounting tool.
It is sectional drawing corresponding to the BB line of FIG.

FIG. 10 is a sectional view corresponding to FIG. 4 of the second embodiment.

FIG. 11 is a longitudinal sectional view showing a state in which a stopper rubber is mounted on a mounting frame in a third embodiment.

FIG. 12 is a perspective view of a stopper rubber and a component mounting tool.

FIG. 13 is a sectional view taken along line 13-13 of FIG. 12;

FIG. 14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a sectional view corresponding to FIG. 13 of the fourth embodiment.

[Explanation of symbols]

11 ... Bumper as a support 14 ... Nut as a part to be mounted 18,59 ... Mounting holes 26 ₁ , 26 ₂ , 26 ₃ , 26 ₄ ... Part mounting tool 27a ... Grip part 28 ₁ , 28 ₂ ··· cylinder body 29 ₁ , 29 ₂ ··· piston 31 ₁ , 30 ₂ ··· head 31 ··· spring 36 ₁ and 36 ₂ ··· cylinder hole 40 ··· pneumatic chamber 51 ... Air vent holes as air pressure releasing means 58 ... Attachment frame as support 60 ... Stopper rubber as attached part 62 ... Eccentric weight 65 ... Pressure regulating valve

Claims (5)

[Claims] In a state of attachment to a support (11, 58), a mounted part (14, 60) which exerts a resilient force opposing a force in a direction separating from the support (11, 58) is supported. Said support (1) for attachment to a body (11,58).
A component mounting tool for applying a pressing force by air pressure toward the (1, 58) side to the mounted component (14, 60), comprising a gripper (27a) that can be gripped by an operator, and a cylinder having an open front end. Cylinder bodies (28 ₁ , 28 ₂ ) having holes (36 ₁ , 36 ₂ ) and connected to the gripper (27a)
₂ ) and a rear end wall of the cylinder hole (36 ₁ , 36 ₂ ), an air pressure chamber (40) is formed to form the cylinder hole (3).
6 ₁ , 36 ₂ ) to be slidably fitted to the piston (29
_1, 29 ₂₎ and, wherein a can hold at the front of the fitting (14, 60) piston (29 _1, 29 ₂₎
A head (30 ₁ , 30 ₂ ) coaxially connected to a spring, a spring (31) for urging the head (30 ₁ , 30 ₂ ) in a direction to reduce the volume of the pneumatic chamber (40), The piston (2) is inserted into the cylinder bores (36 ₁ , 36 ₂ ).
And a pneumatic release means (51) for releasing the air pressure of the pneumatic chamber (40) in accordance with the movement of the pneumatic chamber (9 ₁ , 29 ₂ ) from the retreat limit by a predetermined distance. 2. The air pressure release means (51) is provided in the cylinder bore (36 ₁ , 36 ₂ ).
9 _1, 29 ₂₎ so as to open said pneumatic chamber (40) to the outside in response to forward a predetermined distance from the retraction limit, at an air vent hole provided in the cylinder body (28 _1, 28 ₂₎ The component mounting tool according to claim 1, wherein: 3. The piston (29 ₁ ) is rotatably fitted in the cylinder hole (36 ₁ ), and one end of the spring (31) which is a coil spring is connected to the cylinder body (28 ₁ ). said head (30 ₂₎ and the spring receiving portion being integral (41), wherein the other end of the spring at the position eccentric from the axis of said head (30 ₂₎ (31), characterized in that the engaged Item 4. The component mounting tool according to Item 1 or 2. 4. A component mounting tool according to claim 3, wherein said head (30 ₂ ) is provided with an eccentric weight (62) eccentric from an axis of rotation thereof. 5. A pressure control valve (65) for controlling an amount of air discharged from the air vent hole (51) is provided in the cylinder body (2).
3. The component mounting tool according to claim 2, wherein the component mounting tool is mounted on 8 ₁ , 28 ₂ ).