JP3049133B2 - Press-fitting machine for boots with metal fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-fitting machine for a boot with metal fittings.

[0002]

2. Description of the Related Art A boot with a fitting is press-fitted and fixed in a pin guide hole of a support for slidably supporting a caliper for a disc brake, and dust-proofing of the caliper guide pin slidably inserted into this hole. It is figured.
The boot with a fitting has a configuration in which one end of a rubber boot is fixed to the outward flange of a fitting having an outward flange at one end of a cylindrical portion. Conventionally, the operation of assembling the boot with the fitting is performed manually, and the cylindrical portion of the fitting is pressed into the hole of the support, and the outward flange portion is brought into contact with the end face of the support.

[0003] However, the assembling work of the boot with the bracket is as follows.
Since a large press force is applied to the outward flange to press the cylindrical part into the support hole, the technical problem of damaging the rubber boot and deteriorating the dustproof function of the caliper guide pin is a problem. Atsuta. In addition, skill was required to prevent mounting errors such as deformation of the cylindrical portion of the boot with fittings, and mounting work was inefficient.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional technical problem, and has a structure comprising a metal fitting having an outward flange portion at one end of a cylindrical portion. A press-fitting machine for a boot with metal fittings, in which the cylindrical part of a metal boot with one end of a rubber boot part fixed to an orientation flange is pressed into a hole of a member to be mounted. A press-fitting machine main body having a boot support member projecting therefrom, and a claw portion pivotally supported by the press-fitting machine main body and having a front end portion projecting inward to lock the outward flange portion. A plurality of swinging members having an inner inclined surface portion gradually inclined inward toward the front end on the inner surface of the intermediate portion, and slidably fitted to the boot supporting member and projecting between the swinging members. It has a protruding part, and on the inner inclined surface part of the swinging member A cam ring-opening claws having a pressing surface for engagement, a press fit machine boots with metal, characterized in that it comprises a reduced diameter section whose diameter decreases the claw portion of the plurality of oscillating members. The diameter reducing means can be constituted by an annular elastic body attached to the outer periphery of the plurality of swing members, or can be externally fitted to the outer periphery of the plurality of swing members and provided on the protruding portion of the pawl opening cam ring. It can be composed of an inner inclined surface of the collar to be fixed, and an outer inclined surface formed on the outer surface of each swing member and gradually inclined inward toward the tip. In addition, a return spring that biases the claw opening cam ring toward the base end can be compressed and interposed between the engagement portion formed on the outer surface of the intermediate portion of the boot support member and the claw opening cam ring. Further, a grease injection hole that opens to the tip portion can be formed in the boot support member.

[Action]

First, the pawl opening cam ring is slid toward the distal end. As a result, the inner inclined surface portion of the swinging member is pushed open by the pressing surface, and each swinging member swings in diameter to open the claw portion to operate. When the claw is opened, the boot is fitted to the front end of the front end support member, with the front end of the boot with the front end facing with the front end of the front end.

Next, the pawl opening cam ring is returned to the base end side, and the pawl portions of the respective swing members are reduced in diameter by the diameter reducing means. Thus, the claw portion of each swing member faces the outward flange portion of the boot with the fitting. Next, the press-fitting machine of the boot with the fitting is moved forward by aligning the central axes of the boot support member and the hole of the mounted member.

As a result, the cylindrical portion of the boot with the fitting is pressed into the hole of the member to be mounted. During this press-fitting, the outward flange of the boot with the fitting is pressed by the claw of each swinging member, so that the claw does not come off from the boot with the fitting, so that the boot with the fitting is press-fitted into the hole of the member to be mounted. Is done. When the boot with the fitting is press-fitted into the hole of the member to be mounted, the press-fitting machine for the boot with the fitting is returned to move and the mounted member is replaced. By repeating such a procedure, the boots with the fittings are sequentially press-fitted into the holes of the mounted member.

If the diameter reducing means is constituted by an annular elastic body mounted on the outer periphery of a plurality of swinging members, when each swinging member swings in diameter to open the claw portion, the annular elastic body is opened. Are elastically extended, and when the pawl portions of the respective swinging members are closed and operated, the annular elastic body is elastically contracted. Due to the elastic restoring force of the ring-shaped elastic body, the diameter-increase swing of each swing member is also restrained.

Further, the diameter reducing means is provided on the inner inclined surface of the collar which is externally fitted on the outer peripheral side of the plurality of swing members and is fixed to the projection of the pawl opening cam ring, and on the outer surface of each swing member. When the rocking member is formed to have an outer inclined surface which is gradually inclined inward toward the front end, when each swinging member swings in diameter to open the claw portion, the inner inclined surface and the outer inclined surface are formed. When the engagement is released and the claw portion of each swing member is reduced in diameter, the inner inclined surface and the outer inclined surface are engaged. Further, the engagement between the inner inclined surface and the outer inclined surface surely restrains the swinging movement of each swing member.

[0010] If a return spring for urging the pawl opening cam ring toward the base end side is compressed and interposed between the engaging portion formed on the outer surface of the intermediate portion of the boot support member and the pawl opening cam ring, The return of the pawl opening cam ring is effected by the elastic force of the return spring. Furthermore, if the boot support member is formed with a grease injection hole that opens at the tip, an appropriate amount of grease is injected in advance into the inner surface of the hole of the member to be mounted, so that the cylindrical portion of the boot with the fitting is attached to the member to be mounted. It can be pressed into the hole smoothly.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. 1 to 16 show one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a press-fitting machine main body, which comprises an annular member 2 and a boot support member 3. The annular member 2 has an annular shape as shown in FIG. 8, and has a through hole 2a formed in the center thereof. A plurality of (four in the illustrated embodiment) bolt holes are formed around the through hole 2a. 2b is formed.

The boot support member 3 comprises a support member main body 4 and a tip support member 5. As shown in FIGS. 4 to 6, the support member main body 4 includes a cylindrical base end portion 4a, an outward flange-like portion 4b, and a cylindrical front end portion 4c. The front end portion 4c has a recess opening at the front end. 4d, and a grease injection hole 4e extending from the base end 4a to the bottom surface of the recess 4d is formed. In addition, the outward flange 4b has
A screw hole 4f corresponding to the bolt hole 2b of the annular member 2 is formed, and four notches 4g are formed between the screw holes 4f. On both sides of each notch 4g, A pin hole 4h is formed.

On the other hand, as shown in FIG. 7, the distal end supporting member 5 comprises a base end 5a having an annular groove 5f, an outward flange-like portion 5b serving as a locking portion, and a distal end 5c.
Is formed with a grease injection hole 5d which opens perpendicular to the central axis direction, and a central axis direction grease injection hole 5e connected to the grease injection hole 5d is formed from the base end portion 5a. .

The boot support member 3 is inserted into the recess 4d of the support member main body 4 by inserting the base end 5a of the distal end support member 5 in which the seal ring 3a is interposed in the annular groove 5f.
The leading end surface of c is abutted against the outward flange-like portion 5b to form an integral body, and the two 4 and 5 are fixed with set screws 3b. In this state, the grease injection holes 4e, 5d, 5
e is connected. Then, the base end portion 4 of the support member body 4
a is inserted into the through hole 2a of the annular member 2, and the bolt 3c passed through each of the bolt holes 2b is screwed into each of the screw holes 4f. The press-fitting machine main body 1 is formed by fixing the press-fitting machine 4b.

A swing member 6 is pivotally supported on each of the notches 4g of the support member body 4 of the press-fitting machine body 1 by pins 7 shown in FIG. The swing member 6 is shown in FIGS.
0, a narrow base portion 6a having a pin hole 6g and a base surface 6f forming an arc surface, a claw portion 6b having a front end projecting inward, and an arc-shaped groove 6h on the outer surface. Has,
And a wide end portion 6c which is curved in an arc shape. Also,
An inner inclined surface portion 6d gradually inclined inward toward the tip is formed on the inner surface of the intermediate portion of the swing member 6, and an outer inclined surface portion 6e gradually inclined inward toward the tip is formed on the outer surface of the intermediate portion. To form

Each of the rocking members 6 has a base end inserted into each notch 4g of the support member body 4, and a slightly smaller diameter pin 7 inserted into each of the pin holes 4h and 6g. The base end face 6f, which is supported and forms an arc surface by the action of the larger pin hole 4h or 6g, can abut the tip end side face of the annular member 2 of the press-fitting machine body 1.

Further, at the tip 4c of the support member main body 4,
A nail opening cam ring 8 is attached. The claw opening cam ring 8 has a plurality of protruding portions 8a protruding between the adjacent swing members 6 as shown in FIGS.
The swinging member 6 has an annular pressing surface 8b that can be engaged with the inner inclined surface portion 6d. The cam ring 8 for pawl opening is slidably fitted between the outward flange portion 4b of the support member main body 4 and the outward flange portion 5b of the distal end support member 5, and the outward flange of the distal end support member 5 is provided. Pressed by a return spring 10 which is compressed and interposed between the support member main body 4 and the outward flange-like portion 4 of the support member main body 4 in a normal state.
b.

Further, an annular collar 11 is fixed to the plurality of projections 8a of the pawl opening cam ring 8, as shown in FIG. The collar 11 includes a plurality of swing members 6.
And is fixed to the outer periphery of the projection 8a of the pawl opening cam ring 8 by a set screw 13. In the normal state in which the pawl opening cam ring 8 is returned to the base end by the return spring 10 described above, the inner inclined surface 1 is formed on the inner surface of the collar 11 and gradually decreases in diameter toward the distal end.
1a abuts against the outer inclined surface 6e of each swing member 6 to constitute a diameter reducing means for urging the plurality of swing members 6 to reduce the diameter.

The arc-shaped grooves 6h of the plurality of rocking members 6
An O-ring 12 which is an annular elastic body is fitted to the outside, and constitutes a diameter reducing means for urging the plurality of swing members 6 to reduce the diameter by the elastic restoring force of the O-ring 12. The press-fitting machine for a boot with metal fittings having such a configuration is used by fixing the annular member 2 to a reciprocating drive device (not shown). This reciprocating drive device reciprocates the entire press-fitting machine of the boot with the fitting in the center axis direction of the boot support member 3.

The press-fitting machine for a boot with a fitting has the above-described configuration, and press-fits a boot 15 with a fitting shown in FIG. 14 into an inner surface of a hole 16a of a mounted member 16 which is, for example, a support of a disk brake. The boot 15 with metal fitting has a configuration in which one end of a rubber (natural rubber or elastomer) boot part 15d is fixed to the outward flange part 15b of a metal fitting 15c having an outward flange part 15b at one end of a cylindrical part 15a. .

Next, the operation of the above embodiment will be described. First, the collar 11 is gripped to open the claw opening cam ring 8.
At the same time, and slide to the tip side (right side in FIG. 1). As a result, the return spring 10 is compressed, the engagement of the inner inclined surface 11a of the collar 11 with the outer inclined surface 6e is released, and the pressing surface 8b pushes the inner inclined surface 6d of the swing member 6 open. . Thus, each swing member 6 is O
The ring 12 is swung while being elastically deformed so that the claw portion 6b
Open and operate. When the claw portion 6b is opened as shown in FIG. 15, the metal fitting 15c of the metal boot 15 is set to the front side.
The boot portion 15d is provided on the distal end portion 5c of the distal end support member 5.

Next, when the user releases his / her hands from the collar 11, the collar 11 and the pawl opening cam ring 8 return to the base end side by the action of the return spring 10, and the swing members 6
Swings back due to the elastic restoring force of the O-ring 12. As the collar 11 and the pawl opening cam ring 8 return to the base end side, the inner inclined surface 11a of the collar 11 engages with the outer inclined surface 6e of the swing member 6, so that each swing member 6 is reduced in diameter. By swinging, the claws 6b are closed and actuated as shown in FIG.

When the collar 11 and the cam ring 8 for opening the pawl have fully returned to the base end, the inner inclined surface 11a elastically presses each swing member 6 toward the base end, and each swing member 6 swings. The base end surface 6 f of the member 6 is brought into contact with the front end side surface of the annular member 2. At this time, the pin 7 having a slightly smaller diameter slightly moves with respect to the larger pin hole 4h or 6g. The diameter-reducing swing of each swing member 6 is regulated by the inner surface of the base end 6a of each swing member 6 abutting against the pressing surface 8b of the pawl opening cam ring 8.

In this state, as shown in FIG. 16, the claw portion 6b of each swing member 6 faces the outward flange portion 15b of the boot 15 with the fitting via one end of the boot portion 15d. Next, the center axis of the boot supporting member 3 and the center axis of the hole 16a of the mounted member 16 are aligned, and the annular member 2 of the press-fitting machine of the boot with fittings is pressed by a reciprocating drive device (not shown) to swing each swing. The member 6 is moved forward.

Thus, the cylindrical portion 1 of the boot 15 with metal fittings
5 a is pressed into the inner surface of the hole 16 a of the mounted member 16.
During this press-fitting, the outward flange 15b of the boot 15 with the fitting is pressed by the claw 6b of each swing member 6, so that the claw 6b does not come off from the boot 15 with the fitting.
The boot with fitting 15 is press-fitted into the hole 16a of the member 16 to be mounted. At this time, since the inner inclined surface 11a of the collar 11 is engaged with the outer inclined surface 6e of the swing member 6, the diameter-increase swing of each swing member 6 is reliably restrained. O-ring 12
Due to the elastic restoring force, the expanding swing of each swing member 6 is restricted.

At the time of press-fitting, each grease injection hole 4
If an appropriate amount of grease is injected into the inner surface of the hole 16a of the mounted member 16 through e, 5d, and 5e, the press-fitting is performed smoothly. When the boot 15 with the fitting is press-fitted into the hole 16a of the mounted member 16, the press-fitting machine for the boot with the fitting is returned and moved by a reciprocating drive device (not shown), and the mounted member 1 is mounted.
Replace 6 By repeating such a procedure, the boots 15 with fittings are sequentially press-fitted into the holes 16a of the member 16 to be mounted.

【The invention's effect】

As will be understood from the above description, according to the press-fitting machine for a boot with a fitting according to the present invention, the cam ring for opening the pawl is slid to cause the swinging member to expand and swing, and the boot with the fitting is mounted. Can be press-fitted into the hole of the member to be mounted simply by moving the press-fitting machine of the metal-fitted boot after the outer diameter of the swinging member is reduced and the rocking member is rocked. Therefore, the assembling work of the metal-fitted boot, which is performed by applying a large press force to the outward flange portion, is performed without skill, and may damage the rubber boot portion or deform the metal fitting of the metal-fitted boot. A mounting error can be prevented, and the remarkable effect that the mounting operation is performed efficiently can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a press-fitting machine for a boot with metal fittings according to an embodiment of the present invention.

FIG. 2 is a left side view showing the press-fitting machine of the boot with the fitting.

FIG. 3 is a right side view showing the press-fitting machine of the boot with the fitting.

FIG. 4 is a left side view showing the supporting member body.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a front view showing the outwardly facing flange-like portion.

FIG. 7 is a view showing a tip support member.

FIG. 8 is a view showing the same annular member.

FIG. 9 is a front view showing the rocking member partially cut away.

FIG. 10 is a plan view showing the swing member.

FIG. 11 is a front view showing the cam ring for opening the nail in a partial cross section.

FIG. 12 is a right side view showing the same pawl opening cam ring.

FIG. 13 is a sectional view showing the collar.

FIG. 14 is a cross-sectional view showing a fitting-equipped boot and a mounted member.

FIG. 15 is an explanatory view of the same operation.

FIG. 16 is an explanatory diagram of the same operation.

[Explanation of symbols]

1: press-fitting machine body, 2: annular member, 3: boot support member,
4: Support member body, 4e: Grease injection hole, 5: Tip support member, 5a: Base end portion, 5b: Outward flange portion (locking portion), 5c: Tip end, 5d: Grease injection hole,
5e: grease injection hole, 6: rocking member, 6a: base end, 6b: claw, 6d: inside sloped surface, 6e: outside sloped surface, 6f: base end surface, 7: pin, 8: claw opening Cam ring, 8a: projecting portion, 8b: pressing surface, 10: return spring, 11: collar, 11a: inner inclined surface, 12: O-ring (annular elastic body), 15: boot with metal fittings, 15a: tubular portion, 15b : Outward flange, 15c: Metal fitting, 15
d: boot part, 16: mounted member, 16a: hole.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-15681 (JP, A) JP-A-3-213225 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B25B 27/10 B23P 19/02

Claims (5)

(57) [Claims] 1. A fitting having a fitting having an outer flange portion at one end of a cylindrical portion and one end of a rubber boot portion fixed to the outward flange portion at a hole of a member to be mounted. A press-fitting machine of a boot with a fitting to be press-fitted, wherein the boot with the fitting is provided with a boot support member projecting from a front side with the fitting being a front side of the fitting, and is pivotally supported by the body of the press-fitting machine. A plurality of rocking members each having a claw portion whose distal end portion projects inward to lock the outward flange portion, and an inner inclined surface portion gradually inclined inward toward the distal end on the inner surface of the intermediate portion; Slidably fitted to the boot support member,
A pawl opening cam ring having a protrusion protruding between the rocking members and having a pressing surface engaged with an inner inclined surface of the rocking member, and reducing the diameter of the claws of the plurality of rocking members. A press-fitting machine for a boot with metal fittings, comprising a diameter reducing means. 2. The press-fitting machine according to claim 1, wherein the diameter reducing means is an annular elastic body mounted on the outer periphery of the plurality of swing members. 3. A diametrically reducing means is externally fitted on the outer peripheral side of the plurality of rocking members, and is provided on an inner inclined surface of a collar fixed to a protruding portion of the pawl opening cam ring, and on an outer surface of each of the rocking members. 3. The press-fitting machine for a boot with metal fitting according to claim 1, wherein the press-fitting machine is formed of an outer inclined surface formed and gradually inclined inward toward a tip. 4. A return spring for urging the pawl opening cam ring toward the base end between the engaging portion formed on the outer surface of the intermediate portion of the boot support member and the pawl opening cam ring, is interposed by compression. The press-fitting machine for a boot with a fitting according to claim 1 or 3, wherein: 5. A boot support member having a grease injection hole formed at a tip end thereof.
Press-fitting machine for boots with 2, 3 or 4 metal fittings.