JPH05104347A - Device for automatically assembling dustproof boot - Google Patents

Abstract

PURPOSE:To install a dustproof boot between a piston and an object to which the boot is attached by providing slide blocks each of which has at its end portion a supporting face for supporting the inner peripheral portion of the dustproof boot and which is guided to the tapered face of a slide block enlarging member with its diameter enlarged as a slide block attaching member is raised. CONSTITUTION:A second vertically driving unit 6 is actuated to raise a slide block attaching member 2 together with a slide block enlarging member 3 and the slide block enlarging member 3 is forced into sealing contact with a piston 12 and an elastic member 16 is elastically deformed. Next, each slide block 4 to which a slide guide portion 2b is freely slidably attached has its diameter enlarged so as to enlarge the diameter of a dustproof boot 13 and deform the boot 13. Thereafter, the first vertically driving unit 8 is driven to thrust up a slide sleeve 1 and the inner and outer peripheral portions of the dustproof boot 13 are thrusted up by the pressing face 1a of the slide sleeve 1 and the dustproof boot 13 is gradually pushed into the space between an object 11 to which the boot is attached and the piston 12 while the boot 13 is elastically deformed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic assembling apparatus for dustproof boots.

[0002]

2. Description of the Related Art A dustproof boot for assembling a space between a caliper and a piston is assembled between an annular groove of a piston slidably inserted into a caliper for a disk brake and an annular groove of the caliper. ing. Conventionally, the assembling work of the dustproof boot is performed manually, and the dustproof boot is elastically deformed and mounted in the annular groove of the caliper and the annular groove of the piston.

However, since the work of mounting the dustproof boot involves the work of inserting it into the narrow gap between the caliper and the piston, it requires skill to prevent a mounting error, and
It was inefficient.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technical problems, and its structure is an annular groove of a piston slidably inserted in an object to be mounted, An automatic device for assembling a dustproof boot, which comprises assembling a dustproof boot between an annular groove of an object to be mounted, the slide sleeve having at least a part of a front end surface thereof forming a pressing surface of the dustproof boot, and a slide sleeve. And a first vertical drive device for vertically reciprocating, and is installed in a slide sleeve,
A slide block mounting member that forms a radial slide guide portion at the tip, a second vertical drive device that reciprocally drives the slide block mounting member up and down, and a slide block mounting member that is elastically moved upward by an elastic member. A slide block expansion member that is urged and internally mounted, and has a tapered surface that gradually expands toward the tip at the tip, and a slide block mounting member that is slidably mounted by being guided by the slide guides of the slide block mounting member. And a plurality of slide blocks that have a supporting surface for holding the inner peripheral portion of the dustproof boot and that are expanded in diameter by being guided by the tapered surface of the slide block expanding member as the slide block mounting member moves upward. This is an apparatus for automatically assembling dustproof boots. A rotary drive device for rotationally driving the slide sleeve around the central axis can be provided, and a diameter reducing means for urging the plurality of slide blocks can be provided.

[Action]

First, one dustproof boot is held by the slide block. That is, the inner peripheral portion of the dustproof boot is held by the supporting surfaces of the plurality of slide blocks. When the dustproof boot is held on the slide block, the mounted object is fixed by making the central axes of the piston and the slide block expansion member substantially coincide with each other.

In this state, the second vertical drive device is operated to raise the slide block mounting member together with the slide block expanding member, and bring the slide block expanding member into close contact with the piston. Further, when the second block drive device is operated and the slide block mounting member is raised, the elastic member elastically deforms while the slide block expansion member contacting the piston remains stopped.

At the same time, each slide block slidably mounted on each slide guide portion of the slide block mounting member slides so as to expand its diameter, and the dustproof boot is expanded so that its inner diameter substantially matches the outer diameter of the piston. Transform the diameter. Due to this deformation, the dustproof boot 13 is thinned between the inner peripheral portion and the outer peripheral portion.

Next, the first vertical drive device is driven to push up the slide sleeve. As a result, the pressing surface of the slide sleeve pushes up the inner and outer peripheral parts of the dustproof boot in a thin state, and the dustproof boot is elastically deformed and gradually pushed into the gap between the mounted object and the piston, and the annular groove of the piston is pushed. When it is pushed into between the annular groove of the mounted object and the annular groove of the mounted object, it is elastically expanded and automatically mounted. that time,
If the slide sleeve is driven to rotate in one direction by the rotation drive device, the dustproof boot in a thin state is pushed in while the pressing surface rotates, so that the dustproof boot is locally elastically deformed and the mounted object and the piston are Is gradually pushed into the gap.

When the mounting of one dustproof boot is completed in this manner, the slide sleeve is lowered by the first vertical drive unit and the slide block mounting member is lowered by the second vertical drive unit. Let Along with the lowering of the slide block mounting member, the slide block expanding member elastically urged upward by the elastic member relatively moves up.

If a diameter reducing means for urging a plurality of slide blocks to reduce the diameter is provided, each slide guide is slidably attached to each slide guide portion of the slide block attaching member as the slide block attaching member descends. The slide block is guided by the tapered surface and returns to the reduced diameter. Thus, one cycle of mounting one dustproof boot is completed.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show one embodiment of the present invention. In FIG. 1, reference numeral 10 indicates an automatic assembling apparatus for dustproof boots, which can be slidably mounted on a disc brake 11 which is an object to be mounted by the automatic assembling apparatus 10 for dustproof boots fixedly mounted on a base 19. Piston 12 inserted
The dust-proof boot 13 is assembled between the annular groove 12a and the annular groove 11a of the caliper 11 which faces the annular groove 12a. The caliper 11 is detachably attached to an attachment device (not shown) provided on the base 19 with the piston 12 facing downward. Further, the dustproof boot 13 is annularly made of an elastic material made of rubber or elastomer, and as shown in FIGS. 8 and 9, has a wavy portion 13c between the inner peripheral lip 13a and the outer peripheral lip 13b which is expandable and contractible. Are connected together.

1 to 3, reference numeral 1 indicates a slide sleeve, and at least a part of the tip end surface of the cylindrical slide sleeve 1 projects in the radial direction and the central axis direction, and the pressing surface of the dustproof boot 13 is pressed. 1a is formed, and an annular body 1b is fixed to the outer periphery of the lower end of the slide sleeve 1.
The pressing surface 1a of this embodiment is formed as a pair with the tip end surface of the slide sleeve 1 protruding in the radial direction as shown in FIG. A bearing 1c and a spring 8f are interposed between the annular body 1b and the support portion 19a on the base 19 side, and the slide sleeve 1 is always elastically urged downward and is rotatable about the central axis. is there.

The slide sleeve 1 is connected to a cylindrical slide sleeve connecting member 1e by engaging a convex portion 1f and a concave portion 1g so as not to rotate relative to each other, and is fixed to a lower end of the slide sleeve connecting member 1e in an annular shape. The lowering position is regulated by the abutment of the tip of a swinging culm 8a, which will be described later, on the body 1h. The slide sleeve 1 and the slide sleeve connecting member 1e are rotatably mounted on a slide block mounting member 2 described later. A key 20a extending in the central axis direction is formed on the outer periphery of the lower end of the slide sleeve connecting member 1e.

A slide block mounting member 2 is incorporated in the slide sleeve 1. As shown in FIG. 4, the slide block mounting member 2 is formed with a recess 2a having an open tip, and a slide guide portion 2b having a T-shaped cross section is radiated to the tip around the recess 2a. A plurality (four in this embodiment) are formed in the direction. A connecting member 2e is connected to the slide block mounting member 2 by engaging a convex portion 2f with a concave portion 2d formed at a lower end of the slide block mounting member 2 such that the connecting member 2e is of a double-acting type which will be described later. It is connected to the piston rod 6a of the cylinder device 6. In addition, a long hole 2c is formed at an intermediate portion of the slide block mounting member 2 in the central axis direction so as to be located in the recess 2a and face each other.

The recess 2 of this slide block mounting member 2
The slide block expansion member 3 shown in FIG. A tip end portion of the slide block expansion member 3 is formed with a tapered surface 3a that gradually expands in diameter toward the tip end, and an outward flange portion 3b is formed at the tip end. The outer diameter of the outward flange portion 3b is smaller than the outer diameter of the piston 12 of the caliper 11.

Further, a through hole 3c is formed at an intermediate portion of the slide block expanding member 3 in the central axis direction, and a pin 15 press-fitted and fixed in the through hole 3c is engaged with the long hole 2c of the slide block mounting member 2. In this case, the relative movement of the slide block expansion member 3 with respect to the slide block mounting member 2 in the vertical direction is restricted within a predetermined range. Further, a step surface 3d is formed at the lower end of the slide block expansion member 3,
The step surface 3d and the recess 2a of the slide block mounting member 2
A spring 16, which is an elastic member that elastically biases the slide block expansion member 3 upward, is compressed and interposed between the spring 16 and the bottom portion. 28 is a spring seat. In the normal state, the slide block expansion member 3 is urged by the spring 16 to move to the raised position, that is, the pin 15
Is in a position where it is locked to the upper end of the long hole 2c.

A guide groove 4a of the slide block 4 is provided in each slide guide portion 2b of the slide block mounting member 2.
Can be mounted slidably. Slide block 4
Is a guide groove 4a having a T-shape at the base end as shown in FIG.
And a support surface 4c for holding the inner peripheral surface of the dustproof boot 13, that is, the inner peripheral lip 13a, on the outer surface of the tip portion. The support surface 4c is attached with a step surface 4b on which the inner peripheral lip 13a is placed. Each slide block 4 has a dustproof boot 13
With the inner peripheral lip 13a of the above is held by the support surface 4c,
The inner surface 4d of the tip portion is guided by the taper surface 3a of the slide block expansion member 3 to expand its diameter. In the plurality of slide blocks 4, an annular coil spring 5 as a diameter reducing means is elastically mounted in an arc groove 4e formed on the outer surface,
The diameter is constantly reduced.

The slide block mounting member 2 includes:
The second for vertically reciprocating the slide block mounting member 2
A double-acting cylinder device 6, which is a vertical drive device, is attached. The cylinder device 6 is fixedly mounted on a base plate 19, and its piston rod 6a is connected to the slide block mounting member 2 via a connecting member 2e.

On the other hand, the slide sleeve 1 is provided with a first vertical drive device 8 for vertically reciprocating the slide sleeve 1. As shown in FIGS. 1 and 7, the first vertical drive device 8 is composed of a swinging culm 8a that is swingably supported by a pin 8c on the base 19 side, a cylinder device 8b, and a spring 8f. By the swinging of the moving culm 8a, the tip end portion thereof comes into contact with the annular body 1h to drive the slide sleeve 1 upwardly, and the elastic force of the spring 8f drives the slide sleeve 1 downwardly. .. The cylinder device 8
b is fixed to a bracket 27 fixed to the piston rod 6a of the cylinder device 6, and the piston rod 8d is swingably connected to the intermediate portion of the swing culm 8a by a pin 8e.

The slide sleeve connecting member 1e assembled as described above is provided with the rotary drive device 21 for rotating the slide sleeve connecting member 1e and thus the slide sleeve 1 about the central axis. As shown in FIG. 7, the rotary drive device 21 includes a pair of bearings 22, 2 on the base 19 side.
The first gear 2 rotatably supported via 3 and slidably fitted with the key 20a of the slide sleeve connecting member 1e.
4, a second gear 25 that meshes with the first gear 24, and a motor 26 that rotationally drives the second gear 25.
By the rotation of 6, the slide sleeve connecting member 1e and the slide sleeve 1 at arbitrary positions in the vertical direction can be rotationally driven about the central axis.

Next, the operation of the above embodiment will be described. First, one dustproof boot 13 is held by all slide blocks 4. That is, the dustproof boot 13
Is placed on the step surface 4b of the plurality of slide blocks 4, and the inner peripheral lip 13a is held by the support surface 4c. If you hold the dustproof boot 13 on the slide block 4,
The caliper 11 is attached to a mounting device (not shown) provided on the base 19, and the central axes of the piston 12 and the outward flange portion 3b of the slide block expansion member 3 are substantially aligned with each other.

In this state, the piston rod 6a of the cylinder device 6 is actuated to project so that the connecting member 2e is slightly moved upward. As a result, the slide block mounting member 2 ascends together with the slide block expanding member 3, and the outward flange portion 3b of the slide block expanding member 3 is held by the caliper 11.
Abutting on the piston 12. Further, when the piston rod 6a of the cylinder device 6 is caused to project and the slide block mounting member 2 is raised, the slide block expansion member 3 which is in contact with the piston 12 remains stopped, the spring 16 is compressed, and the pin 15 is removed. It moves in the long hole 2c. Although the rocking culm 8a rocks to drive the slide sleeve 1 upward by driving the cylinder device 6, the amount thereof is small.

At the same time, each slide block 4 slidably attached to each slide guide portion 2b of the slide block mounting member 2 has its tip inner surface 4d guided to the taper surface 3a of the slide block expanding member 3 to form a coil spring. 5 is slid so as to expand while elastically expanding, and the dustproof boot 13 is expanded and deformed so that the inner diameter thereof substantially matches the outer diameter of the piston 12. The dustproof boot 13 mainly includes the inner peripheral lip 13a and the corrugated portion 13c.
Is compressed and deformed, and the space between the inner peripheral lip 13a and the outer peripheral lip 13b is thinned. The ascending drive of the slide block mounting member 2 by the cylinder device 6 is performed until the tip of the support surface 4c of the slide block 4 contacts the lower end of the piston 12. In this state, the tip of the support surface 4c of the slide block 4 is connected to the outer peripheral edge of the lower end portion of the piston 12.

Next, the rotary drive device 21 is driven and the first vertical drive device 8 is also driven. That is, the motor 26
Rotation of the slide sleeve connecting member 1e and the slide sleeve 1 via the second gear 25 and the first gear 24.
In a state in which the piston rod 8d of the cylinder device 8b is projectingly actuated in a state of being driven to rotate in one direction around the central axis, the swing rod 8a is swing-driven about the pin 8c, and the annular body 1
The slide sleeve connecting member 1e and the slide sleeve 1 are pushed up via h.

As a result, the pair of pressing surfaces 1a of the slide sleeve 1 rotate and the dustproof boot 13 is in a thin state while rotating.
Push up the inner peripheral lip 13a and the outer peripheral lip 13b of
When the dustproof boot 13 is locally elastically deformed and gradually pushed into the gap between the caliper 11 and the piston 12 of the disk brake, and even between the annular groove 12a of the piston 12 and the annular groove 11a of the caliper 11. It is elastically expanded and installed automatically.

In this way, one dustproof boot 13
When the installation of the is finished, stop the rotation drive device 21,
The piston rod 6a of the cylinder device 6 is retracted, and the first vertical drive device 8 drives the swing culm 8a downward. As a result, the slide block mounting member 2 and the connecting member 2e are lowered, and the slide sleeve 1 and the slide sleeve connecting member 1e are lowered by the elastic force of the spring 8f. Along with the lowering of the slide block mounting member 2, the slide block expanding member 3 which receives the elastic force of the spring 16 relatively rises to the position where the pin 15 is locked at the upper end of the long hole 2c, and the slide block mounting member 2 Each slide block 4 slidably attached to each slide guide portion 2b of 2 is reduced in diameter while being guided by the tapered surface 3a by the elastic force of the coil spring 5. Thus, one cycle of mounting one dustproof boot 13 is completed.

【The invention's effect】

As can be understood from the above description, according to the device for automatically assembling the dustproof boot according to the present invention, the dustproof boot is provided between the annular groove of the mounted object and the annular groove of the piston. It is automatically installed, and both the installation error prevention and the installation work efficiency can be well achieved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a part of an automatic assembly device for a dustproof boot according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a slide sleeve and a slide sleeve connecting member in the same manner.

FIG. 3 is a plan view showing a slide sleeve of the same.

FIG. 4 is a sectional view showing a slide block mounting member.

FIG. 5 is a diagram showing a slide block expansion member in the same manner.

FIG. 6 is a perspective view showing a slide block of the same.

FIG. 7 is a view showing a first vertical drive unit and a rotary drive unit.

FIG. 8 is a diagram showing a dustproof boot in the same manner.

FIG. 9 is a sectional view showing an enlarged half of the dustproof boot.

[Explanation of symbols]

1: slide sleeve, 1a: pressing surface, 2: slide block mounting member, 2a: recess, 2b: slide guide part,
3: slide block expansion member, 3a: tapered surface, 3
b: outward flange part, 4: slide block, 4a:
Guide grooves, 4b: step surface, 4c: support surface, 5: coil spring (diameter reducing means), 6: cylinder device (second vertical drive device), 6a: piston rod, 8: first vertical drive device,
8f: Spring, 10: Automatic device for assembling dustproof boot, 11: Caliper of disc brake (attached object), 11a: annular groove, 12: Piston, 12a: annular groove, 13: Dustproof boot, 13a: Inner Lap lip, 13
b: outer peripheral lip, 13c: corrugated portion, 16: spring (elastic member), 19: base, 21: rotary drive device.

Claims (3)

[Claims] 1. An automatic assembling device for a dustproof boot, wherein a dustproof boot is assembled between an annular groove of a piston slidably inserted in an object to be attached and an annular groove of the object to be attached, the tip of which is provided. A slide sleeve having at least a part of the surface forming a pressing surface of the dustproof boot, a first vertical drive device for vertically reciprocating the slide sleeve, and a slide guide portion provided in the slide sleeve and having a radial slide guide portion at its tip end. A slide block mounting member to be formed, a second vertical drive device for vertically reciprocating the slide block mounting member, and a slide block mounting member internally mounted by elastically urging upward by an elastic member and directed toward the tip. A slide block expansion member having a tapered surface that gradually expands in diameter at the tip,
It is slidably mounted by being guided by each slide guide part of the slide block mounting member, and has a supporting surface for holding the inner peripheral part of the dustproof boot at the tip part. An automatic apparatus for assembling a dustproof boot, comprising: a plurality of slide blocks which are guided by a tapered surface of an expansion member and expand and move. 2. The apparatus for automatically assembling a dustproof boot according to claim 1, further comprising a rotary drive device for rotationally driving the slide sleeve about the central axis. 3. The apparatus for automatically assembling a dustproof boot according to claim 1, further comprising a diameter reducing means for urging a plurality of slide blocks to reduce the diameter.