JPH11105591A - Vehicular seat slide gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat slide gear that is less in the number of part items, capable of lightening its own weight as specified and also able to reduce the cost of production, as making smooth operations performable, besides preventing any offensive sound from occurring. SOLUTION: A vehicular seat slide gear is equipped with a grooved metal rail 1 to be set up in a car body, a slider 3 being installed in a seat and free of movement in the longitudinal direction, and a bearing 5 supported by this slider 3. In this constitution, a contact surface member 12 is attached tight to an outer ring 7 so as to make this contact surface member 12, consisting of resin or rubber, interpose between this outer ring 7 of the bearing 5 and the rail 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat slide device used for adjusting the position of a seat in a vehicle such as an automobile.

[0002]

2. Description of the Related Art A seat slide apparatus includes an upper rail, a lower rail, and metal rollers, balls, bearings and the like interposed therebetween. When a long slide is required, a structure is used in which the bearing is fixed to the upper rail and the outer race of the bearing is rolled so that the upper rail is not longer than the seat. Deep groove ball bearings and needle bearings are used as bearings. FIG. 10 shows an example. In the figure, a lip groove-shaped rail 51 is fixed to a vehicle body, and a bearing 54 which is in rolling contact with the bottom surface of the rail 51.
Are attached via a shaft 53 to a slider 52 provided on the seat. The rail 51 and the slider 52
Are the lower and upper rails, respectively.

[0003]

The seat slide device is characterized in that it is susceptible to external vibration since it is stopped for a long time without being slid and is used in automobiles and the like. For this reason, various problems occur as follows. a. Since the bearing 54 and the like used in the soot slide device receive the vibration, an abnormal noise may be generated between the bearing 54 and the metal rail 51. b. In order to prevent abnormal noise, a structure may be adopted in which the gap is closed by using bearings and other parts in the assembled state of the slide device, but in this state, many parts such as bearings are required, May be large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and is intended for a vehicle capable of preventing abnormal noise, enabling smooth operation, reducing the number of parts, reducing the weight, and reducing the cost. It is an object to provide a seat slide device.

[0005]

According to the present invention, there is provided a seat slide apparatus for a vehicle, comprising: a groove-shaped metal rail provided on a vehicle body; a slider provided on a seat and movable in a longitudinal direction of the rail; In a vehicle seat slide device having a bearing attached to a shaft provided on a slider and an outer ring rolling on a web surface of the rail, a contact surface material made of resin or rubber is provided between the outer ring and the rail. The contact surface member is fixed to the outer ring so as to be interposed. As described above, since the contact surface member made of resin or rubber is interposed between the metal rail and the bearing outer ring, abnormal noise is prevented. In particular, when the contact surface material is a resin, it has a self-lubricating property, so that it is not necessary to apply grease. In addition, since abnormal noise is prevented by the contact surface material of the bearing outer ring in this way, a bearing and other parts for filling a gap between the rail and the bearing provided for suppressing the abnormal noise can be unnecessary, and the structure is reduced. Simple, lightweight,
A smooth operation can be obtained.

In the above structure, the contact surface material may be integrated with the outer ring by injection molding, coating, or bonding. In this way, by integrating by injection molding or coating or bonding, integration can be performed firmly and easily, even after long-term use,
The contact surface material does not come off unexpectedly. Further, the contact surface material may be a member fitted in a circumferential groove formed on the outer diameter surface of the outer ring, for example, an O-ring or the like. With this configuration, it is only necessary to increase the number of groove processing and contact surface material fitting steps in the manufacturing process of the outer ring, and it is not necessary to incorporate the injection molding and coating steps into the line. Good nature.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows an example in which the vehicle seat slide device is applied to support a seat of an automobile.
The vehicle seat slide device includes a pair of left and right rails 1 and 1 attached to a floor of a vehicle body, and sliders 3 attached to both sides of a seat 2 corresponding to the rails 1.
And cam followers A attached to a plurality of front and rear portions of each slider 3. The rail 1 has a lip groove shape and is made of a roll-formed product of a metal plate such as a steel plate. Rail 1
May have a falling portion at the ends of both lips as shown in FIG. The slider 3 has a plate-like rail insertion portion 3a vertically inserted into the rail 1, and shafts 4 projecting from both sides as shown in FIG. It is provided in a penetrating state and fixed by welding or the like. Note that the rail 1 and the slider 3 are also referred to as a lower rail and an upper rail, respectively.

The cam follower A is composed of a pair of rolling bearings 5 and 5 which are respectively installed on both sides of the shaft 4. Each rolling bearing 5 is formed of a deep groove ball bearing with a seal. A rolling element 8 held by a retainer 9 is interposed between an inner ring 6 and an outer ring 7, and seals 10 are attached to both sides of the outer ring 7. It is configured. The inner and outer rings 6, 7 and the rolling elements 8 are made of metal such as bearing steel. In this configuration, in this embodiment, a plurality of circumferential grooves 11 are formed on the outer diameter surface of the outer ring 7, and a ring-shaped contact surface material 12 is integrally formed on each of the circumferential grooves 11 with the outer ring 7 by injection molding. It has been molded. The contact surface material 12 is made of resin or rubber, and is provided so as to protrude from the outer diameter surface of the outer ring 7, and is brought into rolling contact with the inner surface of the web 1 a of the rail 1.

FIGS. 9A to 9D are explanatory views showing various relations between the seat 2 and the rail 1 installed in one vehicle in plan view. In the example shown in the figure, the seats 2 are provided in the front and rear three rows, and the front row is divided into a driver seat 2 and a passenger seat 2. The example of FIG.
The seat 2 in the center row is also divided into left and right. As shown in the figure, the rails 1 include those provided exclusively for one seat 2 and those used commonly for the front and rear two rows of seats 2.

According to the vehicle seat slide device of this configuration, since the contact surface member 12 made of resin is interposed between the metal rail 1 and the bearing outer race 7, abnormal noise is prevented. In particular, when the contact surface member 12 is made of a resin, the contact surface member 12 has self-lubricating properties, so that it is not necessary to apply grease. In addition, since abnormal noise is prevented by the contact surface member 12 of the bearing outer ring 7, a bearing and other parts which are conventionally provided to reduce a gap between the rail and the bearing for suppressing the abnormal noise are unnecessary. , The structure is simple, the weight can be reduced, and a smooth operation can be obtained. When the contact surface material 12 is integrated with the outer ring 7 by injection molding as described above,
The contact surface member 12 can be firmly fixed, and does not peel off even after long-term use.

3 to 5 show another embodiment of the present invention. The example of FIG. 3 is different from the example of FIG.
Instead of the configuration in which the circumferential groove 11 is provided and the contact surface material 12 is provided in a part of the width direction, the contact surface material 12 made of resin is formed by injection molding over the entire outer diameter surface of the outer ring 7 or It is provided in a fixed state integrally with the outer ring 7 by coating or bonding with an adhesive. When the contact surface member 12 is provided over the entire width of the outer ring 7 as described above, the contact is performed on a wide surface, and thus the wear of the contact surface member 12 is reduced.

In the example shown in FIG. 4, instead of providing the contact face material 12 in the circumferential groove 11 of the outer race 7 by injection molding in the example of FIG. The portion is provided so as to elastically fit into the circumferential groove 11 of the outer ring 7. In this case, the contact surface member 12 may be made of resin or rubber. For example, an O-ring can be used for the contact surface member 12 in this example. In the case of this configuration, the groove processing and the contact surface material 12
It is only necessary to increase the number of fitting steps, and it is not necessary to incorporate the steps of injection molding and coating into the line, so that the production line is not complicated and the productivity is good.

The example of FIG. 5 is different from the example of FIG. 1 in that the contact surface material 12 is provided in the circumferential groove 11 of the outer ring 7 by injection molding. The surface material 12 is provided. The contact surface member 12 may be made of rubber or resin. As described above, when the contact surface member 12 is provided so as to protrude more in the width surface than the outer ring 7, the outer ring 7 also comes into contact with the flange portion of the rail 1 via the contact surface member 12. A smoother operation can be obtained.

FIGS. 6 to 8 each show still another embodiment of the present invention. In each of these examples, a needle roller bearing without an inner ring is used as the bearing 5. That is, the bearing 5 includes a rolling element 8 formed of needle rollers held by a retainer 9 and an outer ring 7 having both flanges, and both are made of metal such as bearing steel. The rolling element 8 is in direct contact with the outer diameter surface of the shaft 4. In the example of FIGS.
In the same manner as in the example of FIG. 1, a plurality of circumferential grooves 11 are formed on the outer diameter surface, and a ring-shaped contact surface material 12 is formed in each circumferential groove 11 integrally with the outer ring 7 by injection molding. It is. Contact surface material 1
Numeral 2 is made of resin or rubber, and is provided so as to protrude from the outer diameter surface of the outer ring 7, and rolls and contacts the inner surface of the web of the rail 1. In the example of FIG. 8, the contact surface material 12 is provided in a fixed state integrally by injection molding or coating over the entire outer diameter surface of the outer ring 7. 7 and 8, the bearings 5 are attached to the shafts 4 protruding from both sides of the slider 3 as in the examples of FIGS. In the example of FIG. 6, a pair of facing falling pieces 3
b, 3b, and the shaft 4 is mounted between the falling pieces 3b, 3b. The bearing 5 is provided on the outer periphery of the shaft 4,
The axial movement is restricted by the falling pieces 3b, 3b on both sides of the slider 3. In this example, a slider 3 is provided on a falling portion 1d provided at the tip of the lip portion on both sides of the rail 1.
Are engaged with each other, and the axial movement of the slider 3 is restricted by this engagement. In the examples of FIGS. 6 to 8 as well, in the same manner as in the above-described embodiments, the number of parts is reduced, the weight can be reduced, and the cost can be reduced while preventing abnormal noise and enabling smooth operation.

[0015]

According to the seat slide device for a vehicle of the present invention, the contact surface member is fixed to the outer ring such that the contact surface member made of resin or rubber is interposed between the outer ring of the bearing and the metal rail. Therefore, while preventing abnormal noise and enabling smooth operation, it is possible to reduce the number of parts, reduce the weight and size, and reduce the cost. When the contact face material is integrated with the outer ring by injection molding or coating, the contact face material can be firmly and easily integrated, and the contact face material does not come off unexpectedly even after long-term use. When the contact surface material is fitted in a circumferential groove formed on the outer diameter surface of the outer ring, productivity is good.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle seat slide device according to an embodiment of the present invention.

2A is a perspective view of a seat using the vehicle seat slide device, and FIG. 2B is a perspective view of a rail thereof.

FIG. 3 is a cross-sectional view of a vehicle seat slide device according to another embodiment of the present invention.

FIG. 4 is a sectional view of a vehicle seat slide device according to still another embodiment of the present invention.

FIG. 5 is a sectional view of a vehicle seat slide device according to still another embodiment of the present invention.

FIG. 6 is a sectional view of a vehicle seat slide device according to still another embodiment of the present invention.

FIG. 7 is a sectional view of a vehicle seat slide device according to still another embodiment of the present invention.

FIG. 8 is a sectional view of a vehicle seat slide device according to still another embodiment of the present invention.

FIG. 9 is an explanatory diagram showing the relationship between various seats and rails.

FIG. 10 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rail 6 ... Inner ring 2 ... Seat 7 ... Outer ring 3 ... Slider 8 ... Rolling element 4 ... Shaft 11 ... Circumferential groove 5 ... Bearing 12 ... Contact surface material

Claims (3)

[Claims] 1. A groove-shaped metal rail installed on a vehicle body, a slider provided on a seat and movable in a longitudinal direction of the rail, and a web of the rail attached to a shaft provided on the slider. In a vehicle seat slide device provided with a bearing to which an outer ring is rolled on a surface, the contact surface member is fixed to the outer ring so that a contact surface member made of resin or rubber is interposed between the outer ring and the rail. Vehicle seat slide device. 2. The vehicle seat slide device according to claim 1, wherein the contact surface member is integrated with the outer ring by injection molding, coating, or bonding. 3. The vehicle seat slide device according to claim 1, wherein the contact surface member is fitted into a circumferential groove formed on an outer diameter surface of the outer ring.