JPH0648306A - Method and device for setting leather to steering wheel ring part in leather-wound steering wheel - Google Patents

Abstract

PURPOSE:To provide a method and device for setting a leather to a steering wheel ring part in a leather-wound steering wheel in which a circular leather can be mechanically set to the steering wheel ring part without using human power, and manhours can be reduced. CONSTITUTION:One end part parallel to a central axis of a circular leather 20 is cramped by the cramping mechanisms 30 of a plurality of leather holding bodies 2 arranged around a steering wheel ring part 10 to fix the circular leather 20 by the leather holding bodies 2. After finishing the cramping, the diameter of the circular leather 20 is extended larger than the outer diameter of the steering wheel ring part 10. The steering wheel ring part 10 is then moved and advanced to a fixed position never interfered with diameter contracting motion in the inside of the diameter-extended circular leather 20. The diameter of the circular leather 20 is then contracted to a diameter smaller than the outer diameter of the steering wheel ring part 10, and the reverse side of the circular leather 20 is closely adhered to the outer circumferential part of the steering wheel ring part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for setting leather on a handle ring portion of a leather-wrapped handle.

[0002]

2. Description of the Related Art As a conventional method and apparatus for setting leather on this kind of handle ring portion, there is a technique disclosed in Japanese Patent Laid-Open No. 3-246163.

This leather setting device has a base, a truncated cone-shaped up-and-down moving member that is vertically movable in the center of the base, and a base with the up-and-down moving member arranged in the center. The doughnut-shaped radial guide member is provided above the table, and a plurality of expansion pieces are provided on the radial guide member so as to be divided in the circumferential direction. While having an inner peripheral surface contacting the outer peripheral surface of the vertical movement member and an outer peripheral surface contacting the inner peripheral surface of the annular leather, each expansion piece moves radially to each expansion piece or radial guide member. This is a configuration provided with a guide mechanism for guiding the.

An annular leather is applied to the outer peripheral portion of each expansion piece, and the vertical moving member is moved upward to move each expansion piece outward to expand the annular leather, and the vertical movement member is moved. After moving downward, manually move each expansion piece in the direction of decreasing its diameter to release the tension of the annular leather, then remove the annular leather from each expansion piece and install it on the installation plate in advance. It is pulled up to the handle ring part that is provided and is covered while positioning, and then the side edge of the annular leather is sewn or glued. In this way, the work of wrapping around the handle ring portion is completed.

[0005]

However, in the above-mentioned conventional technique, the expansion pieces are manually moved in a direction in which the diameter of the expansion pieces is reduced to release the tension of the annular leather, and then the annular leather is released. Since it uses human power to remove the leather from each expansion piece and pull it up to the handle ring part installed in the installation plate in advance to set the cover while positioning, there are variations due to people, and the number of steps is There was a problem that it took time and could not be positioned.

The present invention has been made in view of the above problems, and its first object is to mechanically set an annular leather on a handle ring portion without using human power. (EN) Provided is a method for setting leather on a handle ring portion of a leather-wrapped handle which can reduce the number of steps.

A second object of the present invention is to provide a leather setting device capable of mechanically and smoothly setting the annular leather on the handle ring portion without using human power. is there.

[0008]

In order to achieve the above-mentioned first object, a method of setting leather on a handle ring portion of a leather-wrapped handle according to the present invention comprises a plurality of leathers arranged around the handle ring portion. A clamping process of clamping one end of the holding body in a direction parallel to the central axis of the annular leather with the holding mechanism to fix the annular leather to the plurality of leather holding bodies,
After the clamp is completed, a leather expanding step of expanding the annular leather to a diameter equal to or larger than the outer diameter of the handle ring portion, and moving the handle ring portion to shrink the inside of the annular leather having the expanded handle ring portion. Entry process to enter a fixed position that does not interfere with radial movement, and adhesion process to reduce the diameter of the annular leather to a diameter that is less than or equal to the outer diameter of the handle ring portion and to attach the back surface of the annular leather to the outer periphery of the handle ring portion. It is characterized by having and.

In order to achieve the above-mentioned second object, the leather setting device of the present invention is arranged around the handle ring portion and clamps one end portion of the annular leather in a direction parallel to the central axis. A plurality of leather holders for expanding the diameter of the handle ring portion of this annular leather to a diameter not less than the outer diameter and reducing the diameter of the handle ring portion to not more than the outer diameter, and to hold the handle ring portion and handle And a handle ring portion holding mechanism that allows the ring portion to enter the inside of the expanded annular leather.

[0010]

According to the method for setting the leather on the handle ring portion of the leather-wrapped handle of the present invention, the clamping mechanism for the plurality of leather holders arranged around the handle ring portion makes the direction parallel to the central axis of the annular leather. Clamp one end of the toroidal leather to a plurality of leather holders, and after clamping, expand the toroidal leather to the outer diameter of the handle ring portion or more, and then move the handle ring portion. Inside this expanded ring-shaped leather, let this handle ring part enter into a fixed position that does not interfere with the diameter-reducing motion, and then reduce the ring-shaped leather to a diameter equal to or less than the outer diameter of the handle ring part, Since the back surface of the annular leather can be brought into close contact with the outer peripheral portion of the handle ring portion, the annular leather can be mechanically set on the handle ring portion without using human power.

Further, in the leather setting device of the present invention, the annular leather can be mechanically and smoothly set on the handle ring portion without using human power.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a leather setting device for a handle in a leather-wrapped handle according to the present invention, and FIG. 2 is a sectional view of the leather setting device with a part omitted, and an annular leather and a handle ring portion in the leather setting device. FIG. 3 is an explanatory diagram of a set state of FIG. The leather setting device comprises a handle ring holding mechanism 1 and a leather holding mechanism 2 which is arranged on the peripheral side of the handle ring holding mechanism 1 to hold the annular leather and expand and reduce the diameter of the annular leather. There is.

The handle ring holding mechanism 1 has a bottom plate 3
Is equipped with an elevating cylinder 4 installed at the center of the elevating cylinder 4, and a piston rod 4a of the elevating cylinder 4 is provided with a fixed base 5 having a planar circular shape, and a clamper 6 is provided at the center of the fixed base 5. . A plurality of ring portion inner surface receiving members 7 are provided on the upper surface of the fixed base 5 so as to be located on a circle centered on the clamper 6.

The leather holding mechanism 2 includes a substrate 9 supported on the bottom plate 3 via a plurality of supports 8. The substrate 9 has a diameter slightly larger than the outer diameter of the handle ring portion 10. A circular hole 11 having is formed. On the upper surface of the substrate 9, left and right and front and rear leather holders 12 are arranged on the circumferential side of the circular hole 11. The left and right and front and rear leather holders 12 have the same structure.

These leather holders 12 are provided with a clamp base 13 on the base plate 9 that moves forward and backward toward the center of the circular hole 11 via a linear way 12a. An inner clamp portion 13a having a plane arc shape is formed at the end of the. This clamp base 1
A movable clamp member 14 is provided on the center of the circular hole 11 so that the movable clamp member 14 can move forward and backward.
An outer clamp portion 14a having a plane arc shape is formed at the end portion on the side of the circular hole 11 and the outer clamp portion 14
The inner surface of a has a protrusion 14b for clamping,
Further, an advance / retreat cylinder 15 for advancing / retreating the movable clamp member 14 is provided on the clamp base 13, and a clamp mechanism 30 is constituted by these.

A cylinder 16 for expanding and contracting the diameter of the clamp base 13 is provided on the base plate 9 together with the movable clamp member 14 for moving the clamp base 13 toward and away from the center of the circular hole 11.

Next, a method of setting the leather on the handle ring portion using the leather setting device constructed as described above will be described.

First, the handle ring portion 10 is placed on the ring portion inner surface receiving member 7, the boss portion 10a of the handle ring portion 10 is gripped by the clamper 6, and the handle ring portion 10 is held.
Is fixed to the fixing base 5. In this state, the lifting cylinder 4 is contracted to lower the handle ring 10 together with the fixed base 5.

Next, as shown in FIG. 2, an adhesive is applied to the inner surface of the holding groove portion 21 between the inner clamp portion 13a of the clamp base 13 and the outer clamp portion 14a of the movable clamp member 14, and the ring shape is dried. The lower side of the leather 20 is inserted and the advancing / retreating cylinder 15 is extended to operate the outer clamp portion 14a.
The protrusion 14b for clamping is pressed against the surface of the leather 20 to fix the annular leather 20 to the clamp base 13 (clamping step). For example, when the vertical width of the leather 20 is 96 mm, the width that is inserted into the holding groove portion 21 and clamped is 25 mm, and the width of 71 mm (96 mm-25 mm) is in a free state where it is not clamped.

When the annular leather 20 is clamped, the entire circumference of the annular leather 20 may be clamped, but it is difficult to evenly stretch the annular leather 20. Therefore, the back surface of the annular leather 20 is clamped by the inner clamp portion 13a. The protrusion 14b for clamp is applied to the surface of the annular leather 20 in a point-contact state. The clamp protrusion 14b is made of, for example, a material that does not scratch the leather surface (hard urethane rubber or the like).
You can make it with.

After the clamping is completed, as shown in FIG. 3, the diameter-increasing and diameter-reducing cylinder 16 is contracted to retract the clamp base 13 and the end surface 13b of the inner clamp portion 13a of the clamp base 13 is made into the circular hole 11. Match with the peripheral surface 11a. In this state, the annular leather 20 is expanded in diameter (leather expanding step).

Next, as shown in FIG. 4, the elevating cylinder 4 is extended to raise the fixed base 5 to lift the handle ring portion 10, and the handle ring portion 10 is attached to the inside of the expanded leather 20. Enter to a fixed position (entry process). At this time, the handle ring portion 10 is located substantially at the center of the vertical width of the leather 20, and does not interfere with the diameter reduction movement of the leather holder 12.

Next, as shown in FIG. 5, the diameter expansion / reduction cylinder 16 is extended to advance the clamp base 13 to reduce the annular leather 20 to a diameter not larger than the outer diameter of the handle ring portion 10. Then, the back surface (inner surface) of the annular leather 20 is brought into close contact with the outer peripheral portion of the handle ring portion 10 (contact step).
At this time, if the positional relationship between the annular leather 20 and the handle ring portion 10 is set in advance, the annular leather 20 is set on the handle ring portion 10 and positioning is possible.

Next, as shown in FIG. 6, the advancing / retreating cylinder 15 is contracted to separate the clamping projection 14b of the outer clamping portion 14a from the surface of the annular leather 20, and the annular leather 20 is clamped. Then, the cylinder 16 for expanding and contracting the diameter is contracted to retract the clamp base 13, and the grip of the boss portion 10a of the handle ring portion 10 by the clamper 6 is released.

Then, the handle ring portion 10 on which the annular leather 20 is set is taken out from the leather setting device, and the steps of confirming the alignment of the annular leather 20, heating, and press bonding are performed.

Further, the handle ring portion 10 on which the annular leather 20 is set may be taken out from the leather setting device by releasing the clamp in the state of FIG.

In the above embodiment, the lower end of the annular leather 20 is clamped by the clamp mechanism 30 of the leather holding mechanism 2 to fix the annular leather 20 to the plurality of leather holders 2, and after the clamping is completed. The diameter of the annular leather 20 is expanded to the outer diameter of the handle ring portion 10 or more, and then the handle ring portion 10 is moved upward to move the handle ring portion 1.
Although 0 was made to enter the inside of the expanded annular leather 20 to a fixed position which does not interfere with the diameter reduction motion, in the present invention,
Reverse the clamp mechanism 30 of the leather holding mechanism 2 by 180 degrees,
The upper end of the annular leather 20 is clamped by the clamp mechanism 30 to fix the annular leather 20 to the plurality of leather holders 2, and after the clamping is completed, the annular leather 20 is made larger than the outer diameter of the handle ring portion 10. The diameter is expanded, and then the handle ring portion 10 is moved from the upper side to the lower side to bring the handle ring portion 10 into a predetermined position inside the expanded annular leather 20 that does not interfere with the diameter reducing motion. Alternatively, the entire leather setting device may be rotated 90 degrees to be turned sideways.

[0028]

As described above, the method of setting the leather on the handle ring portion in the leather-wrapped handle of the present invention uses the clamping mechanism of the plurality of leather holders arranged around the handle ring portion to remove the annular leather. Clamp one end of the direction parallel to the central axis to fix the annular leather to a plurality of leather holders, and after clamping, expand the annular leather to the outside diameter of the handle ring portion or more, then the handle Move the ring part and move this handle ring part to a fixed position inside the expanded annular leather that does not interfere with the diameter reduction motion,
Next, the annular leather is reduced in diameter to a diameter equal to or smaller than the outer diameter of the handle ring portion, and the back surface of the annular leather is brought into close contact with the outer peripheral portion of the handle ring portion. The back surface of the ring-shaped leather can be brought into close contact with the outer periphery of the handle ring, which reduces man-hours and, if the positional relationship between the ring-shaped leather and the handle ring is set in advance, the ring-shaped leather and handle By setting and positioning the ring part, the number of steps in the next process can be reduced.

Further, the leather setting device of the present invention is arranged around the handle ring portion and clamps one end portion in the direction parallel to the central axis of the annular leather, and the outer diameter of the handle ring portion of the annular leather is equal to or larger than the outer diameter of the handle ring portion. The inside of the annular leather that holds the handle ring part and expands the handle ring part to a diameter less than or equal to the outer diameter of the handle ring part Since it has a handle ring holding mechanism that allows the leather to enter, the annular leather can be set on the handle ring mechanically and smoothly without using human power.

[Brief description of drawings]

FIG. 1 is a plan view of a leather setting device for a leather-wrapped handle according to the present invention.

FIG. 2 is an explanatory view of a partially omitted cross section of the leather setting device and a set state of an annular leather and a handle ring portion in the leather setting device.

FIG. 3 is an explanatory diagram of diameter expansion of the annular leather in the leather setting device.

FIG. 4 is an explanatory view of the entry and positioning of the handle ring portion into the annular leather in the leather setting device.

FIG. 5 is an explanatory view of the diameter reduction of the annular leather in the same leather setting device.

FIG. 6 is an explanatory view of unclamping of the annular leather and retreat of the leather holder in the leather setting device.

[Explanation of symbols]

 1 Handle ring part holding mechanism 2 Leather holder 10 Handle ring part 20 Annular leather 30 Clamping mechanism

Claims (2)

[Claims] 1. A clamp mechanism for a plurality of leather holders arranged around a handle ring portion to clamp one end of the annular leather in a direction parallel to the central axis of the annular leather to fix the annular leather to the plurality of leather holders. Clamping process to
A leather expanding step of expanding the annular leather to a diameter equal to or larger than the outer diameter of the handle ring portion, and moving the handle ring portion to interfere with diameter reduction movement of the inside of the annular leather having the expanded handle ring portion. Not equipped with a step of advancing to a fixed position, and a contacting step of reducing the diameter of the annular leather to a diameter equal to or less than the outer diameter of the handle ring portion and adhering the back surface of the annular leather to the outer peripheral portion of the handle ring portion. A method of setting leather on a handle ring portion of a leather-wrapped handle characterized by the above. 2. A handle which is arranged around the handle ring portion and clamps one end in a direction parallel to the central axis of the annular leather, and which has a diameter larger than the outer diameter of the handle ring portion of the annular leather and a handle. Handle ring part holding mechanism that holds a plurality of leather holders that reduce the diameter to the diameter of the ring part or less and the handle ring part and that allows the handle ring part to enter the inside of the expanded annular leather And a leather setting device.