JP2005036834A - Multiple tooth clutch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multiple tooth clutch in which manufacturing costs are drastically reduced and which can quickly correspond to the shape of a tooth and the change of the number of the teeth, and in which manufacturing accuracy is improved, and to provide a manufacturing method for the multiple tooth clutch. <P>SOLUTION: The multiple tooth clutch provided with a rotor 20 and an armature 30 is constituted so as to generate torque by the engagement of the teeth 21 each other formed to the rotor 20 and the armature. The multiple tooth clutch is also constituted so that the tooth 21 is formed by the press working by pressing a die 50 in a prescribed shape on the tooth 21 forming face of the rotor 20 and/or the armature 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tooth clutch for automobiles and the like, and more particularly to an improvement of a tooth clutch that greatly reduces the burden of the manufacturing process.
[0002]
[Prior art]
First, the tooth clutch will be described with reference to FIGS.
FIG. 3 is a side view showing the configuration of the tooth clutch.
FIG. 4 is a front view showing the configuration of the tooth clutch.
FIG. 5 is a partially enlarged side view of the tooth clutch.
[0003]
As shown in FIGS. 3 and 4, the conventional tooth clutch 100 includes a rotor 110, a magnet 112, an armature 120, a leaf spring 122, and a field ASSY 130.
[0004]
Further, as shown in FIG. 5, the conventional tooth clutch 100 has a plurality of teeth (teeth) formed on opposing surfaces of the rotor 110 and the armature 120.
[0005]
With the above configuration, when the armature 120 is attracted in the thrust direction against the restoring force of the leaf spring 122 by the magnet 112 and comes into contact with the opposing surface of the rotor 110, it is formed on the opposing surface of the rotor 110 and the armature 120. A plurality of teeth mesh with each other and a suction force is generated to generate torque.
[0006]
On the other hand, when the attractive force of the magnet 112 disappears, the restoring force of the leaf spring 122 separates the rotor 110 and the armature 120, and the torque disappears.
[0007]
That is, the tooth clutch has characteristics that the friction type clutch does not have, such as no torque is generated during idling and no slipping occurs after connection because torque is generated by the engagement of the teeth.
[0008]
Next, a conventional manufacturing method of the tooth clutch will be described with reference to FIGS.
FIG. 6 is a front view showing the shape of the rotor used for the tooth clutch.
FIG. 7 is a side view showing the shape of the rotor used for the tooth clutch.
FIG. 8 is a perspective view showing the shape of the rotor used for the tooth clutch.
FIG. 9 is a side view for explaining a process of cutting the rotor and the armature used for the tooth clutch.
[0009]
As shown in FIGS. 6 to 8, the rotor 110 used in the tooth clutch 100 is formed with a tooth 111 on the surface facing the armature 120, and the explanation by illustration is omitted. Similarly, the armature 120 also has a rotor. A tooth is formed on the surface facing 110.
[0010]
In order to form the tooth 111 on the rotor 110 and the armature 120, cutting has been conventionally used.
As shown in FIG. 9, a rotor 110 or an armature 120 is placed on a table 150 of a cutting machine with the processing surface forming the tooth 111 facing upward, and one tooth 111 is cut while moving the cutter 160 in the radial direction. Then, it is a manufacturing method of rotating the stand 150 and sequentially cutting the teeth 111 radially.
The angle at which the table 150 is rotated varies depending on the number of the teeth 111 to be formed. For example, when 30 teeth 111 are formed, the table 150 is rotated by 12 degrees.
[0011]
[Patent Document 1]
Japanese Utility Model Publication No. 05-005786
[Problems to be solved by the invention]
Hereinafter, problems of the prior art will be described with reference to FIG.
FIG. 10 is a partially enlarged side view for explaining the problem of the shape of the tooth formed on the rotor.
[0013]
In the conventional method of manufacturing a tooth clutch, it takes time to manufacture each tooth because the teeth are cut one by one.
In addition, a dedicated processing machine that can calculate the forming angle of the tooth according to the number of teeth is required, which increases the manufacturing cost and makes it difficult to quickly respond to changes in the shape and number of teeth. is there.
[0014]
Further, in the conventional manufacturing method by cutting, burrs are generated in the tooth, and this deburring step is necessary, leading to an increase in cost.
Further, since the metal is cut in the cutting process, the surface roughness is poor, and when the tooth tip strength is weak such as a triangular tooth, the cutting of the cutter 160 is performed as shown in FIG. There is also a problem that the tip 111a of the tooth 111 is moved away from the meat due to the resistance.
[0015]
The present invention solves the above problems (problems), greatly reduces the manufacturing cost, can quickly respond to changes in the shape and number of teeth, and manufactures tooth clutches and tooth clutches with improved manufacturing accuracy. It aims to provide a method.
[0016]
[Means for Solving the Problems]
According to a first aspect of the present invention, in the tooth clutch according to the first aspect, the rotor includes an rotor and an armature, and the rotor is configured to generate torque by meshing the teeth formed on the rotor and the armature. And / or the tooth | gear of a predetermined shape was pressed on the tooth formation surface of an armature, and it comprised so that a tooth might be formed by press work.
[0017]
With this configuration, the machining time can be greatly shortened, and changes in the tooth shape and the number of sheets can be dealt with only by changing the mold itself, so that various tooth shapes and the number of sheets can be handled quickly.
[0018]
Further, deburring is not required, the manufacturing process is reduced, further cost reduction is possible, the surface roughness is improved, and the engagement between the teeth of the rotor and the armature is stabilized.
Furthermore, the accuracy of forming the tooth is greatly improved, and it is not necessary to round off in a separate process, thereby reducing the cost.
[0019]
The method of manufacturing a tooth clutch according to claim 2, wherein the tooth clutch includes a rotor and an armature, and generates torque by meshing the teeth formed on the rotor and the armature. A tooth was formed by pressing a metal mold having a predetermined shape against the tooth forming surface of the armature.
[0020]
In this way, the processing time can be greatly shortened, and the tooth shape and the number of sheets can be changed simply by changing the mold itself. Therefore, the manufacturing method should be able to respond quickly to various tooth shapes and numbers. Can do.
[0021]
Further, deburring is not required, the manufacturing process is reduced, further cost reduction is possible, the surface roughness is improved, and the engagement between the teeth of the rotor and the armature is stabilized.
Furthermore, the accuracy of forming the tooth is greatly improved, and it is not necessary to round off in a separate process, thereby reducing the cost.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Each embodiment of the tooth clutch of the present invention will be described with reference to FIGS.
FIG. 1 is a side view for explaining a process for producing the tooth clutch of the present invention.
FIG. 2 is a partial cross-sectional view of a mold used for manufacturing the two-scratch of the present invention.
[0023]
First, the main structure of the tooth clutch of the present invention is a rotor and an armature, as in the conventional tooth clutch, and the shape of each structure is substantially the same, and its manufacturing method is characteristic. Since the operation and the shape at the time of completion may be referred to the drawings of the conventional tooth clutch, the description thereof will be omitted below, and the manufacturing method will be described with reference to FIGS.
[0024]
The rotor 20 and the armature 30 of the tooth clutch of the present invention are placed on a press stand, and the mold 50 in which the desired tooth 21 shape and number of sheets shown in FIG. It is what you make.
[0025]
If such a manufacturing method is used, it can be easily understood that the machining time can be greatly reduced as compared with the cutting process.
Conventionally, as described above, a dedicated machine for cutting is required, but a general-purpose press can be used as it is, and changes in the shape and number of teeth 21 can be handled by simply changing the mold 50 itself. As a result, it is possible to respond quickly to various tooth shapes and numbers.
[0026]
Furthermore, as described above, in the conventional cutting process, a deburring process is necessary because burrs are generated. However, the press process eliminates the need for deburring, reduces the manufacturing process, and further increases the cost. Reduction is possible.
[0027]
Further, in the conventional cutting process, the surface roughness of the tooth 21 surface inevitably deteriorated due to the metal scraping, but this problem can be solved by pressing, improving the surface roughness, The meshing between the teeth of the rotor 20 and the armature 30 is stabilized.
[0028]
In the processing by cutting, in the shape where the tooth strength is weak, such as a triangular tooth, it has been described above that the tip of the tooth is shifted to the direction in which there is no meat due to the cutting resistance of the cutter. The formation accuracy can be greatly improved.
[0029]
In particular, in the conventional cutting process, in order to form the roundness of the radius of curvature R at both corners of the tip of the tooth, it must be a separate process, but in the press process, as shown in FIG. By forming the radius of curvature R in advance in the 50 itself, it is not necessary to round in a separate process, and the cost can be reduced.
[0030]
【The invention's effect】
Since the tooth clutch of the present invention is configured as described above, it has the following excellent effects.
(1) In the tooth clutch comprising the rotor and the armature as set forth in claim 1 and generating torque by meshing the teeth formed on the rotor and the armature, the tooth formation of the rotor and / or the armature If a tooth is formed on the surface by pressing a mold with a predetermined shape, the processing time can be greatly reduced, and the mold itself can be changed for changing the tooth shape and the number of sheets. Therefore, it is possible to respond quickly to various tooth shapes and numbers.
[0031]
(2) Further, deburring is not required, the manufacturing process is reduced, cost can be further reduced, surface roughness is improved, and the meshing between the rotor and armature teeth is stabilized.
(3) Furthermore, the accuracy of forming the tooth is greatly improved, and it is not necessary to round in a separate process, thereby reducing the cost.
[0032]
(4) In the tooth clutch comprising the rotor and the armature as set forth in claim 2 and generating torque by meshing the teeth formed on the rotor and the armature, the tooth formation of the rotor and / or the armature By pressing a die with a predetermined shape on the surface, the tooth can be formed by pressing, so the processing time can be greatly shortened. To change the tooth shape and the number of sheets, just change the die itself. Therefore, it is possible to provide a manufacturing method that can quickly cope with various tooth shapes and numbers.
[0033]
(5) Further, deburring is not required, the manufacturing process is reduced, further cost reduction is possible, surface roughness is improved, and the meshing between the teeth of the rotor and the armature is stabilized.
(6) Furthermore, the formation accuracy of the tooth is greatly improved, and it is not necessary to round off in a separate process, so that the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view for explaining a process for producing a tooth clutch of the present invention.
FIG. 2 is a partial cross-sectional view of a mold used for manufacturing a two-scratch of the present invention.
FIG. 3 is a side view showing a configuration of a tooth clutch.
FIG. 4 is a front view showing a configuration of a tooth clutch.
FIG. 5 is a partially enlarged side view of the tooth clutch.
FIG. 6 is a front view showing the shape of a rotor used for a tooth clutch.
FIG. 7 is a side view showing the shape of a rotor used for a tooth clutch.
FIG. 8 is a perspective view showing the shape of a rotor used for a tooth clutch.
FIG. 9 is a side view for explaining a process of cutting a rotor and an armature used for a tooth clutch.
FIG. 10 is a partially enlarged side view for explaining problems of the shape of the tooth formed on the rotor.
[Explanation of symbols]
20: Rotor 21: Tooth 30: Armature 50: Mold

Claims (2)

In a tooth clutch comprising a rotor and an armature, and generating a torque by meshing teeth between the rotor and the armature,
A tooth clutch characterized in that a tooth is formed by press working by pressing a die having a predetermined shape against a tooth forming surface of the rotor and / or armature. In a tooth clutch comprising a rotor and an armature, and generating a torque by meshing teeth between the rotor and the armature,
A method for manufacturing a tooth clutch, wherein a tooth is formed by pressing a die having a predetermined shape against a tooth forming surface of the rotor and / or armature.

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