JP2020124779A - Assembly device - Google Patents

Abstract

To provide an assembly device which can improve work efficiency in washer assembly work.SOLUTION: An assembly device for attachment/detachment of a washer 20 comprising a hole part 20a at a center thereof comprises: a chuck claw 12 of which a tip is so fixed by a fastening part 16 as to be capable of freely opening/closing; a presser part 14 which energizes so that the tip of the chuck claw opens by pressing inside the adjacent fastening part; and a stopper part 12b which contacts one face of the washer at a pressing point 40 positioned within a distance from a center point O of the chuck claw to the fastening part. The chuck claw is brought into contact with a contact part 12c which can contact in conformity with an angle of an inner peripheral wall part 20b of the hole part of the washer, and is fitted into the hole part of the washer, thereby holding the washer, and when the chuck claw is pressed to the washer side, the pressing point is shifted to an inner side and the tip of the chuck claw is closed, thereby releasing holding of the washer.SELECTED DRAWING: Figure 9

Description

The present invention relates to an assembling device.

For example, when the motor rotation shaft is fitted to the speed reducer side of the starter drive shaft of the vehicle, a washer is arranged at the contact portion between the motor rotation shaft and the drive shaft. Since the drive shaft and the rotating shaft are connected to each other via a planetary gear so that the rotational force can be transmitted, a pin serving as the rotating shaft of the planetary gear and a recess into which the end of the motor rotating shaft is fitted are attached to the drive shaft reducer side. And a counterbore part on which the washer is arranged.

Since this pin extends from the end of the drive shaft to the reducer side, the pin interferes when the washer is attached to the counterbore. A jig that can be assembled is used.

JP-A-61-111862

However, this jig requires two button operations, for example, when the washer is chucked and when it is unchucked, in order to attach and detach the washer. Will be huge. For this reason, there is a problem that the work efficiency of the manufacturing work is deteriorated, such as an increase in the number of work steps and fatigue of the fingers of the worker.

The present invention has been made in view of the above problems, and an object of the present invention is to eliminate the need for an operation such as a button operation when attaching and detaching a washer, and to improve the work efficiency in the washer assembling work. To provide an attachment device.

The assembly device according to claim 1 is for attaching and detaching a washer (20) having a hole (20a) in the center thereof, and a chuck claw (12) whose front end is openably and closably fixed by a retaining part (16). ), a pressing portion (14) that urges the chuck claws inside the adjacent fastening parts so as to open the tip of the chuck claws, and one surface of the washer has the chuck claws. And a stopper portion (12b) that abuts at a pressing point (40) located within a distance from the center point of the claw to the fastening section, and the chuck claw is positioned at an angle of the inner peripheral wall portion (20b) of the hole of the washer. The washer is held by abutting on the abutting contact portion (12c) which can be matched and abutted, and the washer is held in the hole portion of the washer, and when the chuck claw is pressed toward the washer side, the pressing point is inside. When the tip of the chuck claw is closed by shifting to, the holding of the washer is released.

According to the above assembling apparatus, since it is not necessary to perform a button operation or the like when attaching and detaching the washer, it is possible to provide an assembling apparatus capable of improving work efficiency in the washer assembling work. ..

1 is a perspective view showing a schematic configuration of an assembly device according to an embodiment. FIG. 3 is an enlarged perspective view showing a schematic configuration of a tip portion of the assembly device. It is a front view which shows schematic structure of the front-end|tip part of an assembly device, and the figure seen from the arrow R direction of FIG. FIG. 3 is a vertical cross-sectional view showing the schematic configuration of the inside of the assembly device Schematic diagram for explaining the assembly of washers Front view showing the state before fixing the washer with the chuck claw Schematic diagram showing how the washer is fixed by the chuck claw Enlarged view schematically showing how the washer is fixed by the chuck claw Schematic diagram showing how chuck jaws with fixed washers are made to face the drive shaft Schematic diagram showing how the chuck jaws attach the washer to the counterbore part of the drive shaft Schematic diagram showing how the chuck jaws attach the washer to the counterbore Schematic diagram showing how the chuck claw leaves the washer on the counterbore

Hereinafter, an assembling apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same elements as those described above are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 1 to 4, the assembling apparatus 1 includes a main body portion 10, a chuck claw 12, a holding portion 14, and a chuck fastening portion 16. The main body 10 has a cylindrical shape as a whole, and an operator can grip the cylindrical portion. The main body 10 has a chuck claw 12 at one end in the longitudinal direction. In the chuck claw 12, four claw portions 12a are arranged on an arc centered on the claw center point O shown in FIG.

The main body 10 is composed of a case 10a that constitutes an outer shell, and as shown in FIG. 4, is internally provided with a biasing portion 10b that biases the pressing portion 14 against the chuck claw 12. The biasing portion 10b is composed of, for example, a spring.

In the inside of the case 10a, the pressing portion 14 contacts the chuck claw 12 at the pressing portion 14a and urges and presses the chuck claw 12 toward the chuck claw 12. As shown in FIG. 3, the pressing portion 14 is exposed between the adjacent chuck claws 12. The claw portion 12a constituting the chuck claw 12 is fixed to the main body portion 10 by the chuck fastening portion 16 so as to be slightly rotatable about the chuck fastening portion 16 so as to move in the direction of the nail center point O. It is possible to open and close the tip of the chuck claw 12.

The pressing portion 14a is located within the distance from the center point O of the claw to the chucking portion 16. Therefore, when the pressing part 14a presses the chuck claw 12, the tip of the chuck claw 12 opens, and conversely, when the chuck claw 12 presses in the direction of the pressing part 14, the tip of the chuck claw 12 closes.

FIG. 5 is a diagram for explaining the work content performed by the assembling apparatus 1. In the present embodiment, the assembling apparatus 1 mounts the washer 20 on the chuck claw 12 and conveys the washer 20, and after installing the washer 20 on the counterbore portion 28 provided at the end of the drive shaft 22 in the upward direction in the drawing, The work of removing the washer 20 and leaving it on the countersink 28 is performed. The washer 20 is a perforated disk body having a hole 20a in the center. The assembling device 1 is a jig for assembling the washer 20 to the counterbore portion 28 of the drive shaft 22.

As shown in FIG. 5, the drive shaft 22 has a pin 24 and a recessed portion 26 at the speed reducer side, that is, at the upper end in the figure. The pin 24 serves as a rotation shaft of a planetary gear of a planetary gear mechanism (not shown) for transmitting power to a rotation shaft (not shown) fitted in a recess 26 that forms a cylindrical space having a predetermined depth.

Here, when the washer 20 is installed in the counterbore portion 28, the pin 24 extending upward in the drawing, that is, in the speed reducer side direction, becomes an obstacle. Therefore, the pin 24 has a predetermined length that does not interfere with the pin 24, can reach the counterbore portion 28 by passing between the pins 24, and the washer 20 can be detached and left on the counterbore portion 28. The washer 20 is installed using the possible assembling device 1.

As shown in FIGS. 5, 9 and 10, when a rotation shaft (not shown) is installed in the recess 26, a bearing 32 for rotatably disposing the rotation shaft covers the periphery of the recess 26. Is provided. The bearing 32 has a structure in which a cylindrical rotating body is provided on an elongated central axis. A plurality of bearings 32 are arranged along the outside of the inner circumference of the cylindrical bearing case 30.

Further, a counterbore portion 28 that is located at the end of the recess 26 and is continuous with the recess 26 and forms a cylindrical space is provided. The inner diameter of the spot facing portion 28 is substantially the same as the outer diameter of the washer 20, and the depth of the spot facing portion 28 is set to be slightly larger than the thickness of the washer 20.

Next, with reference to FIGS. 6 to 12, an operation of disposing the washer 20 on the counterbore portion 28 by the assembling apparatus 1 will be described.
As shown in FIG. 6, in the assembling apparatus 1, the pressing portion 14 a of the pressing portion 14 is in contact with the rear side of the chuck claw 12 with respect to the chuck claw 12 whose tip is openably and closably fixed by the chuck fastening part 16. In the present embodiment, the four claw portions 12a are arranged so as to be separated from each other by a predetermined distance and the claw center point O is desired.

The pressing portion 14a is located substantially within the center point of the claw O, is located within a distance from the center point O of the claw to the chuck fastening portion 16, and is configured to contact the rear side of the chuck claw 12. With this configuration, when the pressing portion 14 is pressed in the arrow A, that is, in the downward direction in the drawing, the chuck claws 12 move in the direction of the arrow W, so that the tips of the chuck claws 12 move apart from each other and open.

At this time, since the contact portion 12c that contacts the inner peripheral wall portion 20b of the hole portion 20a of the washer 20 and holds the washer 20 expands to the outside, the chuck claw 12 fits into the hole portion 20a of the washer 20 and the washer 20 is held. To be done.

On the contrary, when the chuck claw 12 is pressed in the direction of the arrow B, that is, the pressing portion 14, the tip of the chuck claw 12 moves in the direction of the arrow N, so that the tip of the chuck claw 12 operates to close and close. The chuck claw 12 can fix the washer 20 by the above-mentioned opening operation and detach and leave the washer 20 by the closing operation.

FIG. 6 shows a state before the chuck claw 12 fixes the washer 20, that is, a state in which the chuck claw 12 desires the hole 20 a of the washer 20. By moving the chuck claw 12 of the assembling apparatus 1 in the direction of the arrow C with the hole 20a of the washer 20 as the target, or by inserting the chuck 20 with the washer 20 into the chuck claw 12, as shown in FIG. The washer 20 is attached to the chuck claw 12 of the assembling apparatus 1.

With the washer 20 not attached to the chuck claw 12, the outer diameter of the tip of the chuck claw 12 is smaller than the inner diameter of the hole 20a of the washer 20, and the outer diameter of the abutment portion 12c of the chuck claw 12 is the washer 20. Is larger than the inner diameter of the hole 20a.

FIG. 8 is an enlarged view showing a mounting state of the washer 20 in FIG. 7 on the assembling device 1. The chuck claw 12 is provided with an oblique portion 12d, a contact portion 12c, and a stopper portion 12b from the tip portion. The washer 20 closes the chuck claw 12 as it moves upward while sliding the inner peripheral wall part 20b from the tip of the chuck claw 12 to the diagonal part 12d, and the upper surface 20c of the washer 20 contacts the stopper part 12b. When they come into contact with each other, they stop and are attached to the assembling apparatus 1.

When the washer 20 is attached to the assembling apparatus 1, the pressing portion 14 presses the chuck claw 12 at the pressing portion 14a, so that the chuck claw 12 is biased in the arrow W direction, that is, in the direction in which the tip of the chuck claw 12 opens. ing. At this time, since the chuck claw 12 urges the hole 20a of the washer 20 outward, the inner peripheral wall 20b of the hole 20a of the washer 20 is abutted against the abutting portion 12c of the chuck claw 12 from the inside. Is held.

The abutting portion 12c of the chuck claw 12 can abut so as to match the angle of the inner peripheral wall portion 20b of the washer 20 when the washer 20 is mounted, and the angle of the diagonal portion 12d can be changed to hold the washer 20. It is configured to be vertical.

Further, when the washer 20 is attached to the assembly device 1, the upper surface 20c of the washer 20 is in contact with the stopper portion 12b of the chuck claw 12. The stopper portion 12b is a surface formed by bending from the contact portion 12c to a slightly acute angle from about 90 degrees, and functions as a stopper that restricts the upward movement of the washer 20 when the washer 20 is attached. When the washer 20 is attached, the upper surface 20c of the washer 20 and the chuck claw 12 are in contact with each other at the pressing point 40 of the stopper portion 12b.

Next, as shown by the arrow in FIG. 9, the chuck claw 12 of the assembling apparatus 1 to which the washer 20 is mounted is made to face the recess 26 of the drive shaft 22, and the chuck claw 12 is pushed into the recess 26. The concave portion 26 is a substantially cylindrical concave portion, a bearing case 30 having a bearing 32 is arranged on a side surface portion, and a counterbore portion 28 formed continuously from the concave portion 26 is in contact with the lower surface of the washer 20. A bottom portion 28a is provided.

When the chuck claw 12 is inserted into the recess 26, the oblique part 12d of the chuck claw 12 contacts the claw contact 42 corresponding to the shoulder of the bearing 32, and the lower surface of the washer 20 is inserted, as shown in FIGS. Contacts the countersunk bottom 28a. At this time, the pressing point 40 of the stopper portion 12b of the chuck claw 12 and the upper surface 20c of the washer 20 are in contact with each other at a point P1.

Thereafter, as shown in FIG. 12, when the assembling apparatus 1 is further pushed in the washer 20 side, that is, in the downward direction in the drawing, the pressing point 40 slides on the upper surface 20c of the washer 20 and the chuck claw 12 is pushed inward. Then, the contact point between the pressing point 40 of the stopper portion 12b and the upper surface 20c of the washer 20 moves from the point P1 to the inside P2. By this operation, the tip of the chuck claw 12 moves in the direction of arrow N, and the chuck claw 12 is closed.

In this way, since the chuck claw 12 is closed, the washer 20 and the contact portion 12c of the chuck claw 12 are separated from each other, and the holding of the washer 20 by the chuck claw 12 is released. In this state, as shown in FIG. 12, when the assembling apparatus 1 is moved in the direction of arrow S, that is, in the figure, the washer 20 can be left on the counterbore 28.

With the above operation, the washer 20 is assembled to the countersunk portion 28 of the recess 26 of the drive shaft 22 by the assembling apparatus 1 only by the vertical movement of the assembling apparatus 1, that is, the pressing operation and the detaching operation of the countersunk portion 28. be able to.

As described above, the assembling apparatus 1 according to the embodiment has the following effects.
Since the assembly device 1 is provided with a mechanism in which the tip of the chuck claw 12 is opened and closed by the pressing of the chuck claw 12 by the pressing portion 14, the washer 20 can be held on the chuck claw 12 simply by pushing the washer 20 into the chuck claw 12. It has become possible. Further, the washer 20 can be assembled by the assembling apparatus 1 by a pressing operation and a detaching operation with respect to the counterbore portion 28 accompanying the vertical movement of the drive shaft 22. Accordingly, it is not necessary to provide a mechanism for attaching/detaching the washer 20 and an operation unit such as a button for operating the washer 20, and a worker is not required to perform the operation of attaching/detaching the washer 20 by operating the operation unit. Therefore, the number of times the operator operates the assembling apparatus 1 is reduced, and the workability in the manufacturing process of the drive shaft 22 is improved.

In the embodiment, the case where the washer 20 is attached to the motor rotation shaft of the drive shaft 22 on the speed reducer side has been described as an example, but there is no intention to limit to such a situation. If a part such as the washer 20 having a hole in the center is installed at an assembling place using a jig or the like, the assembling apparatus 1 according to the embodiment can be applied. is there.

Although the present disclosure has been described with reference to examples, it is understood that the present disclosure is not limited to the examples and structures. The present disclosure also includes various modifications and modifications within an equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more, or less than them are also within the scope and spirit of the present disclosure.

DESCRIPTION OF SYMBOLS 1... Assembly device, 10... Main body part, 12... Chuck claw, 12a... Claw part, 12b... Stopper part, 12c... Abutting part, 12d... Diagonal part, 14... Holding part, 14a... Pressing part, 16... Chuck Fastening portion (fastening portion), 20... Washer, 20a... Hole portion, 20b... Inner peripheral wall portion, 40... Pressing point, O... Claw center point

Claims (4)

An assembly device for attaching and detaching a washer (20) having a hole (20a) in the center,
A chuck claw (12) whose tip is openably and closably fixed by a retaining part (16),
A pressing part (14) for urging the tip of the chuck claw to open by pressing the chuck claw inside the adjacent fastening part;
On one surface of the washer, there is provided a stopper portion (12b) that abuts at a pressing point (40) located within a distance from the claw center point (O) of the chuck claw to the fastening portion,
The washer is held by abutting the chuck claw on an abutting portion (12c) which can be abutted in conformity with the angle of the inner peripheral wall portion (20b) of the washer hole, and is fitted into the washer hole. An assembling device that releases the holding of the washer when the chuck claw is pressed to the washer side, the pressing point shifts inward, and the tip of the chuck claw is closed. The assembly device according to claim 1, wherein the chuck claw is provided at one end of a cylindrical main body. The assembly device according to claim 1 or 2, wherein an outer diameter of a tip portion of the chuck claw is smaller than an inner diameter of the hole portion when the washer is not attached to the chuck claw. The assembly device according to any one of claims 1 to 3, wherein an outer diameter of a contact portion of the chuck claw is larger than an inner diameter of the hole in a state where the washer is not attached to the chuck claw.

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