JPH0661566U - Power seat equipment joint - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a joint of a power seat device capable of easily and surely assembling a power seat motor and a reduction mechanism. A joint mounting tube 14d, which is made of an elastic material and has a tubular shape and is permanently attached to the joint 14, is provided outside the joint 14.
A joint 14 of the power seat device 1 in which a motor shaft locking portion 14d1 elastically fitted to a motor shaft 2b1 provided in the power seat motor 2 is provided on the power seat motor 2 side of the joint mounting tube 14d. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint of a power seat device used for transmitting power of a power seat motor to a reduction mechanism in a power seat device.

[0002]

[Prior art]

 Conventionally, as a joint of a power seat device for transmitting the power of a power seat motor to a speed reduction mechanism, those shown in FIGS. 4 and 5 are known. In the power seat device 100 shown in FIG. 4, the lower rails 101 and 102 to which the nut members 105 and 106 are attached are fixed to the vehicle body side, and the reduction mechanisms 107 and 107 are fixed to the lower rails 101 and 102. Upper rails 103 and 104 with seats (not shown) are movably arranged. A power output unit 115a1 provided at an end portion of an armature shaft 115a included in a power seat motor 115 is connected to the input sides of the reduction mechanisms 107, 107 via a joint 110 shown in FIG. Lead screws 109 and 109 are connected to the output side of the mechanisms 107 and 107, and the lead screws 109 and 109 mesh with the nut members 105 and 105.

When the power seat motor 115 is energized, the rotational power of the armature shaft 115 a of the power seat motor 115 is transmitted to the input side of the reduction mechanism 107, 107 via the joint 110, and the lead screws 109, 109 are connected to the nut portion. Since the members 105 and 106 move while meshing with each other, the reduction mechanisms 107 and 107 and the power seat motor 115 move on the lower rails 101 and 102 together with the seat. The joint 110 is provided with a protruding deceleration mechanism side connecting portion 110a connected to the input side of the speed reducing mechanism 107, and a protruding motor side connecting portion 110b connected to the output side of the power seat motor 115. It is formed by processing a blank material.

[0004]

[Problems to be solved by the device]

 In the above-described conventional joint 110 of the power seat device 100, when the power seat motor 115 is assembled to the speed reduction mechanism 107, the joint 110 is inserted into the power output portion 115a1 of the armature shaft 115a included in the power seat motor 115. The joint 110 inserted into the power output part 115a1 of the armature shaft 115a does not fall off during assembly because it is fixed to the speed reduction mechanism 107 by the. Since the work has to be interrupted, there is a problem that assembly can be troublesome, and it has been a problem to solve the above problems.

[0005]

[The purpose of the device]

 A joint of a power seat device according to the present invention is intended to provide a joint of a power seat device that can easily and securely assemble a power seat motor and a deceleration mechanism.

[0006]

[Constitution of device]

[0007]

[Means for Solving the Problems]

 The joint of the power seat device according to the present invention is provided with a joint mounting tube, which is made of an elastic body and is fixedly attached to the joint, on the outside of the joint. The seat motor side is characterized in that it is provided with a motor shaft locking portion that is elastically fitted to the motor shaft provided in the power seat motor, and is adopted as necessary. In the embodiment, the main body included in the joint is formed in an axial shape, and a convex portion for preventing the tube from coming off is formed on a part of the outer periphery of the main body in a ring shape in the radial direction of the main body. In another embodiment to be adopted, on the speed reducing mechanism side of the joint mounting tube, with respect to the motor coupling gear shaft provided in the speed reducing mechanism. It is assumed that there is provided a speed reduction mechanism engaging portion to be engaged.

[0008]

[Function of the device]

 In the joint of the power seat device according to the present invention, the joint mounting tube is permanently attached to the outside of the joint, and the motor shaft locking portion of the joint mounting tube is opposed to the motor shaft provided in the power seat motor. Since they are elastically fitted together, the joint will not fall off until it is mounted as a single unit on the power seat motor side.

[0009]

【Example】

 1 to 3 show an embodiment of a joint of a power seat device according to the present invention.

In the illustrated power seat device 1, a power sheet motor 2 fixed to a reduction mechanism 3 has an armature 2b housed in a cylindrical motor yoke 2a, and one side of the motor yoke 2a is provided on one side thereof. An end cap 2c having one bearing 2c1 arranged therein is attached to the central portion, and an end cover 2d having the other bearing 2d1 arranged at the central portion is attached to the other side of the motor yoke 2a. One side of the motor shaft 2b1 provided in the armature 2b is rotatably supported by the one bearing 2c1, and the other side of the motor shaft 2b1 is rotatably supported by the other bearing 2d1. . A first output portion 2b2 having a square hole shape is provided on one side of the motor shaft 2b1, and a rectangular groove shape is formed on the other side of the motor shaft 2b1 along the radial direction of the motor shaft 2b1. A cut-off second output unit 2b3 is provided.

At the center of the end cover 2d provided in the power seat motor 2, a joint accommodating hole formed in a circular hole shape having a depth from the power transmission mechanism 3 side toward the end cap 2c. 2d2 is formed inside a guide 2d3 that has a tubular shape and projects toward the speed reduction mechanism 3 side, and the second output portion 2b3 of the motor shaft 2b1 projects into this joint insertion hole 2d2. A ring-shaped rubber damper 2e is attached to the outside of the joint receiving hole 2d2 formed in the end cover 2d, and the rubber damper 2e abuts an upper rail 4a of a seat rail 4 described later. Further, gear case mounting portions 2d4 and 2d4 are formed outside the joint housing hole 2d2 so as to have a cylindrical shape from the end portion side of the end cover 2d and project toward the reduction mechanism 3 side. Through holes 2d5 and 2d5 are respectively provided in the central portions of the gear case mounting portions 2d4 and 2d4, and bolts 5 and 5 are inserted into the through holes 2d5 and 2d5 from the motor yoke 2a side toward the reduction mechanism 3. Be done.

In the power seat motor 2, the armature 2b is rotated by energizing the armature 2b from the external wiring 2f via a brush (not shown) to rotate the armature 2b so that the first output portion 2b2 and the second output portion of the motor shaft 2b1 are rotated. Power is output from 2b3. The first output part 2b2 is connected to the other speed reduction mechanism (see FIG. 4) provided at a position symmetrical to the position of the speed reduction mechanism 3 shown in FIG. 2 through a cable (not shown) and the second output part 2b2. A motor coupling gear shaft 3a provided in the reduction gear mechanism 3 is coupled to 2b3 via a joint 14 described later.

A speed reduction mechanism 3 is attached to an end cover 2d of the power seat motor 2 through an upper rail 4a of a seat rail 4. Here, the seat rail 4 is provided with a lower rail 4b fixed to the vehicle body 20 and an upper rail 4a fixed to the seat 30, and the upper rail 4a is supported by the lower rail 4b in FIG. It is attached so that it can move toward the front side and the rear side. The side plate 4a1 of the upper rail 4a on the power seat motor 2 side has an inner diameter slightly larger than the outer diameter of the guide 2d3 at a position corresponding to the guide 2d3 formed on the end cover 2d of the power seat motor 2. The outer diameter of the gear case mounting portions 2d4 and 2d4 is slightly larger than the outer diameter of the gear case mounting portions 2d4 and 2d4 which are provided with the loose insertion holes 4a2 and which are formed in the end cover 2d. Free insertion holes 4a3 and 4a3 having inner diameter dimensions are provided respectively.

As shown in FIG. 3, the reduction mechanism 3 includes a seat connecting gear shaft 3c having a helical gear portion 3c1 formed along a flange 3b1 provided on a T-shaped gear case 3b. While being rotatably supported, a motor connecting gear shaft 3a forming a worm portion 3a1 in a direction orthogonal to the seat connecting gear shaft 3c is rotatably supported. The worm portion 3a1 meshes with the helical gear portion 3c1. The seat connecting gear shaft 3c is inserted into the shaft support hole 3b2 provided in the gear case 3b with the thrust washers 7, 7 and the bearings 8a, 8b mounted on both sides of the helical gear portion 3c1. The motor connecting gear shaft 3a is in a state in which the thrust washer 9 and the bearing 10 are inserted into the worm portion 3a1 on the side of the power seat motor 2 and the bearing 11 is mounted on the side of the worm portion 3a1 opposite to the side of the power seat motor 2. The thrust plug 13 is inserted into the shaft support hole 3b3 provided in the gear case 3b, and the stopper 12 is press-fitted at the end of the motor connecting gear shaft 3a opposite to the power seat motor 2 side. It is attached to the gear case 3b. At the end of the motor coupling gear shaft 3a on the power seat motor 2 side, a concave coupling portion 3a2 cut into a rectangular hole is provided along the radial direction of the motor coupling gear shaft 3a. The connecting portion 3a2 is connected via a joint 14 to a second output portion 2b3 provided on the armature shaft 2b1 of the power seat motor 2.

In the joint 14, a convex portion 14a1 for preventing the connecting tube from coming out is formed on the outer periphery of the shaft-shaped main body 14a near the speed reduction mechanism 3 and slightly annularly protruding in the radial direction of the main body 14a. The speed reducing mechanism side connecting portion 14b formed as a convex shape toward the motor connecting gear shaft 3a provided in the speed reducing mechanism 3 is provided in the concave connecting portion 3a2 of the motor connecting gear shaft 3a. The motor-side connecting portion 14c, which is connected to the reduction gear mechanism 3 by being inserted and is formed to have a convex shape toward the power seat motor 2 side, is provided in the second output portion 2b3 of the motor shaft 2b1. It is connected to the power seat motor 2 side by being inserted. The joint 14 is integrally formed with a convex portion 14a1 for preventing the connecting tube from coming off, a deceleration mechanism side connecting portion 14b, and a motor side connecting portion 14c by processing a shaft-shaped material. A joint mounting tube 14d is attached to the outside of the joint 14.

The joint mounting tube 14 d is made of elastic rubber and is formed into a tubular shape. The inner diameter of the joint mounting tube 14 d is substantially equal to the outer diameter of the main body 14 a of the joint 14 and the tube attached to the joint 14 is removed. It is smaller than the outer diameter dimension of the convex portion 14a1 for stopping, and its length dimension is slightly larger than that of the joint 14. The joint mounting tube 14d is covered on the outer side of the joint 14 so that the inner peripheral side thereof is locked to the convex portion 14a1 for preventing the tube from coming off.

On the power seat motor 2 side of the joint mounting tube 14d, a ring-shaped motor shaft having an inner diameter dimension slightly smaller than the outer diameter dimension of the motor shaft 2b1 of the portion where the second output portion 2b3 is provided. The locking portion 14d1 is formed. Since the inner diameter dimension of the motor shaft locking portion 14d1 is slightly smaller than the outer diameter dimension of the motor shaft 2b1 where the second output portion 2b3 is provided, the motor shaft locking portion 14d1 is smaller than the motor shaft 2b1. Elastically fitted. Further, on the speed reducing mechanism 3 side of the joint mounting tube 14d, a speed reducing mechanism locking having a ring-shaped inner diameter dimension slightly smaller than the outer diameter dimension of the motor coupling gear shaft 3a provided with the concave coupling portion 3a2. The portion 14d2 is formed. Since the inner diameter of the reduction mechanism locking portion 14d2 is slightly smaller than the outer diameter of the motor connecting gear shaft 3a provided with the concave connecting portion 3a2, the reduction mechanism locking portion 14d2 is used for the motor connecting gear shaft. 3a is elastically fitted. Here, each of the locking portions 14d1 and 14d2 may be only on the motor shaft 2b1 side.

A lead screw 16 shown in FIG. 2 is connected to the seat connecting gear shaft 3c of the speed reduction mechanism 3, and the lead screw 16 is rotatably arranged inside the upper rail 4a. A nut member 17 meshes with the lead screw 16, and the nut member 17 is fixed to the lower rail 4b.

As shown in FIG. 2, motor mounting portions 3b6, 3b6 provided with stepped holes 3b5, 3b5 having stepped portions 3b4, 3b4 are provided on both sides of the flange 3b1 provided in the speed reduction mechanism 3, as shown in FIG. The stepped holes 3b5 and 3b5 correspond to the through holes 2d5 and 2d5 of the gear case attachment portions 2d4 and 2d4 formed in the end cover 2d of the power seat motor 2. Nuts 18 and 18 having serrations on the outer peripheral side are inserted into the stepped portions 3b4 and 3b4 of the stepped holes 3b5 and 3b5, and the bolts 5 and 5 are screwed into the nuts 18 and 18, respectively.

The joint 14 of the power seat device 1 having such a structure has the joint mounting tube 14d attached to the outside thereof, and the motor shaft locking of the joint mounting tube 14d on one side of the joint 14. The portion 14d1 is located in the projecting state, and the reduction mechanism locking portion 14d2 of the joint mounting tube 14d is located in the projecting state on the other side of the joint 14.

Therefore, when one side of the joint 14 is pressed while being inserted into the joint accommodating hole 2d2 provided in the end cover 2d of the power seat motor 2, the motor shaft engaging portion 14d1 of the joint mounting tube 14d is accommodated in the joint. When the outer peripheral portion of the motor shaft 2b1 protruding into the hole 2d2 is elastically fitted, at the same time, the motor side connecting portion 14c of the joint 14 inside the joint mounting tube 14d causes the second output portion of the motor shaft 2b1 to move. It is connected to 2b3. With the motor-side connecting portion 14c of the joint 14 connected to the second output portion 2b3 of the motor shaft 2b1, the motor shaft locking portion 14d1 of the joint mounting tube 14d with respect to the outer peripheral portion of the motor shaft 2b1. By elastically fitting, the joint 14 is assembled so as not to fall off from the power seat motor 2.

On the other hand, a lead screw 16 is connected to the seat connecting gear shaft 3c of the speed reduction mechanism 3, and the gear case 3b is formed into an L-shaped bracket 19, which abuts on the outside of the shaft support hole 3b2. It is fixed to the upper rail 4a by 19. With the gear case 3b fixed to the upper rail 4a, the screw holes of the nuts 18, 18 arranged in the stepped holes 3b5, 3b5 provided in the gear case 3b are provided on the side plate 4a1 of the upper rail 4a. The shaft support holes 3b3 of the gear case 3b are arranged on the concentric circles of the free insertion holes 4a3, 4a3, and the concentric circles of the free insertion holes 4a2 provided on the side plate 4a1 of the upper rail 4a.

In this state, while inserting the guide 2d3 of the end cover 2d provided in the power seat motor 2 into the free insertion hole 4a2 of the upper rail 4a, the gear case mounting portions 2d4 and 2d4 of the end cover 2d are upper. The rail 4a is inserted into the loose insertion holes 4a3, 4a3, the rubber damper 2e is brought into contact with the side plate 4a1 of the upper rail 4a, and the reduction mechanism locking portion 14d2 of the joint mounting tube 14d is provided on the outer peripheral portion of the motor connecting gear shaft 3a. By elastically fitting the reduction gear mechanism side coupling portion 14b of the joint 14 to the concave coupling portion 3a2 of the motor coupling gear shaft 3a, and the through hole 2d5 of the gear case mounting portion 2d4, 2d4 of the end cover 2d. The bolts 5 and 5 are inserted into 2d5 and are arranged in the stepped holes 3b5 and 3b5 of the gear case 3b. Tighten the nuts 18, 18. By tightening the bolts 5 and 5 and the nuts 18 and 18 with each other, the gear case mounting portions 2d 3 and 2d3 of the end cover 2d are fixed to the motor mounting portions 3b6 and 3b6 of the gear case 3b, and the motor shaft 2b1 is used for connecting the motor. It is connected to the gear shaft 3a.

With the motor shaft 2b1 connected to the motor connecting gear shaft 3a, the gear case mounting portions 2d3 and 2d3 of the end cover 2d do not come into contact with the free insertion holes 4a3 and 4a3 of the upper rail 4a and the gear case 3b. The guide 2d3 of the end cover 2d is also attached to the gear case 3b without coming into contact with the loose insertion hole 4a2 of the upper rail 4a.

Then, when the armature 2b is rotated by energizing from the external wiring 2f of the power seat motor 2, the second output portion 2b3 of the motor shaft 2b1 for connecting the motor of the speed reduction mechanism 3 is connected through the joint 14. Rotational power of the motor shaft 2b1 is transmitted to the gear shaft 3a, and a motor for the other reduction mechanism provided at a position symmetrical to the position of the reduction mechanism 3 via the cable from the first output portion 2b2 Since the rotational power of the shaft 2b1 is transmitted, the motor connecting gear shaft 3a of the reduction mechanism 3 rotates to rotate the seat connecting gear shaft 3c1. When the seat connecting gear shaft 3c1 rotates, the lead screw 16 also rotates and moves with respect to the nut member 17, so that the power seat motor 2, the reduction mechanism 3, the upper rail 4a, and the lead screw 16 together with the seat 30 are moved to the lower rail. Move on 4b. When the seat 30 moves, the joint mounting tube 14d provided on the joint 14 rotates integrally with the joint 14 together with the motor shaft 2b1 and the motor connecting gear shaft 3a.

[0026]

[Effect of device]

 As described above, since the joint of the power seat device according to the present invention has the above-described structure, the motor shaft locking portion of the joint mounting tube fixedly attached to the outside of the joint has the power seat. Since it is elastically fitted to the motor shaft provided in the motor, the joint will not fall off even if it is mounted alone on the power seat motor side.Therefore, the power seat motor and reduction mechanism should be assembled. It has an excellent effect that it can be easily and surely performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a joint of a power seat device according to the present invention.

2 is a plan view of a joint of the power seat device shown in FIG. 1. FIG.

FIG. 3 is an external perspective view of a reduction mechanism and joints in the power seat device shown in FIG.

FIG. 4 is a schematic view of a conventional power seat device.

5 is an external perspective view of a single joint of the power seat device shown in FIG.

[Explanation of symbols]

 1 Power Seat Device 2 Power Seat Motor 2b1 Motor Shaft 3 Reduction Mechanism 4a Upper Rail 4b Lower Rail 14 Joint 14b Reduction Mechanism Side Connection Part 14c Motor Side Connection Part 14d Joint Attachment Tube 14d1 Motor Shaft Locking Part 16 Lead Screw 17 Nut Member 20 Car body 30 seats

Claims (3)

[Scope of utility model registration request] 1. A lower rail fixed to a vehicle body side, a nut member fixed to the lower rail, an upper rail movably mounted on the lower rail and fixed to a seat, and the upper rail. A fixed speed reducing mechanism, a lead screw that is connected to the speed reducing mechanism and meshes with the nut member, a power seat motor fixed to the speed reducing mechanism, and a power seat motor and the speed reducing mechanism. And a joint that includes a motor-side connecting portion that is connected to the output side of the power seat motor and that includes a reduction mechanism-side connecting portion that is connected to the input side of the reduction mechanism. The rotational power of the power seat motor is transmitted to the speed reduction mechanism via the joint and the lead screen is used. In a power seat device for converting the seat into a mesh with a nut member and moving the seat, a joint mounting tube, which is made of an elastic body and is fixed to the joint, is attached to the outside of the joint. A motor shaft locking portion elastically fitted to a motor shaft provided in the power seat motor is formed on the power seat motor side of the joint mounting tube. Power seat joint. 2. A main body provided in a joint is formed in an axial shape, and a convex portion for preventing the tube from coming off in a ring shape in a radial direction of the main body is formed on a part of the outer circumference of the main body. The joint of the power seat device according to 1. 3. A reduction mechanism locking portion, which is locked to a motor coupling gear shaft provided in the reduction mechanism, is provided on the reduction mechanism side of the joint mounting tube.
The joint of the power seat device according to any one of 2.