JP6826809B2 - Seat truck slide device - Google Patents

Description

The present invention relates to a seat track slide device, and more particularly to a seat track slide device including a rotation support mechanism configured to rotatably support a lock member on an upper rail by a support member.

Seat truck slide devices are already well known. A general seat track slide device includes a lower rail fixed to the floor of the vehicle body, an upper rail movably supported by the lower rail, and a plurality of lock holes arranged side by side along the moving direction of the upper rail in the lower rail, and a lock. A handle that is operated to move between the position and the unlock position, a lock member that can be engaged with and detached from the lock hole by operating the handle, and a support member provided on the upper rail to support the lock member. And have.

Further, some seat track slide devices include a rotation support mechanism configured to support the lock member in a rotatable state by the support member on the upper rail. An example of the rotation support mechanism is the mechanism described in Patent Document 1.

Explaining the rotation support mechanism described in Patent Document 1, a plurality of relative rotation portions separated from each other on the rotation center line of the lock member are provided. Further, each relative rotating portion is provided with a contact plate portion included in the support member and a contact plate portion included in the lock member. Further, each relative rotating portion is provided with an intermediate member sandwiched between the contact plate portions. This intermediate member is made of a sphere or the like, and comes into contact with the contact plate portions of the support member and the lock member. As a result, the lock member is supported by the support member in a rotatable state.

Japanese Unexamined Patent Publication No. 2001-47896

By the way, in the seat track slide device provided with the above-mentioned rotation support mechanism, the position of the lock member may be displaced due to an external force acting on the lock member during its operation. In such a case, as shown in FIG. 12, one of the pair of contact plate portions that sandwich the intermediate member, strictly speaking, the one located on the outside is separated from the intermediate member. That is, a gap is formed between the contact plate portion and the intermediate member. Then, when the lock member returns to the original position, the contact plate portion and the intermediate member come into contact with each other again, but at that time, noise such as a contact sound is generated.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is a seat track slide capable of suppressing the generation of noise when the lock member moves relative to the support member. To provide the equipment.

According to the seat track slide device of the present invention, the problems are (A) a lower rail fixed to the floor of the vehicle body, (B) an upper rail fixed to the seat and movably supported with respect to the lower rail, and (C). ) A plurality of lock holes arranged side by side in the lower rail along the moving direction of the upper rail, and (D) a handle attached to the upper rail and operated so as to move between a lock position and an unlock position. , (E) A lock member that is supported by a support member provided on the upper rail and can be engaged with and detached from the lock hole by operating the handle, and (F) the lock member is rotated by the support member on the upper rail. A rotation support mechanism configured to support the lock member in a movable state is provided. (G) In the rotation support mechanism, a plurality of relative rotation portions separated from each other on the rotation center line of the lock member are provided. Each of the relative rotating portions (H) is provided with a contact plate portion of the support member, a contact plate portion of the lock member, and an intermediate member sandwiched between the contact plate portions. (I) In a state where the lock member is supported by the support member, one of the support member and the lock member is placed between the contact plate portions of the one member. It is elastically deformed so as to sandwich the other member to form a deflection, and the contact plate portion of the one member is brought into contact with the other member via the intermediate member due to the urging force generated by the deflection. The plate portion is urged, and (J) elastic deformation occurs when the other member moves relative to the one member due to the action of a predetermined external force on the seat track slide device. It is configured so that the contact state between each of the contact plate portions and the intermediate member is maintained by the one of the members following the movement , and (K) the one member is the other. The other member is supported in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before the assembly of the members, and (L) each of the contact plate portions of the one member has. Each of the contact plates of the one member in a state where the base end portion is arranged inside the base end portion of each of the contact plate portions of the other member in the holding direction of the contact plate portion. It is solved by the part spreading while tilting .

In the seat track slide device of the present invention configured as described above, in a state where the lock member is supported by the support member, one of the support member and the lock member is elastically deformed so as to sandwich the other member. To form a deflection. Then, the contact plate portion of one member urges the contact plate portion of the other member via the intermediate member by the urging force generated by the bending. With such a configuration, even if the lock member moves relative to the support member, the elastically deformed member follows and moves. That is, since the contact state between the contact plate portions of the support member and the lock member and the intermediate member is maintained, it is possible to avoid the formation of a gap between the contact member and the intermediate member. This makes it possible to suppress noise when the gap disappears (that is, when the contact member and the intermediate member come into contact again).

Further, according to the second seat track slide device of the present invention, the above-mentioned problems are (A) a lower rail fixed to the floor of the vehicle body and (B) fixed to the seat and movably supported by the lower rail. (C) A plurality of lock holes arranged side by side along the moving direction of the upper rail in the lower rail, and (D) attached to the upper rail so as to move between the lock position and the unlock position. A lock member that is supported by (E) a support member provided on the upper rail and can be engaged with and detached from the lock hole by operating the handle, and (F) the support member on the upper rail. A plurality of rotation support mechanisms configured to support the lock member in a rotatable state by means of (G) the rotation support mechanism, which are separated from each other on the rotation center line of the lock member. (H) Each of the relative rotating portions is provided with a contact plate portion of the support member, a contact plate portion of the lock member, and a contact plate of the support member. An engaged portion formed in the portion and an engaging portion formed in the contact plate portion of the lock member and engaged with the engaged portion are provided, and (I) the lock member supports the lock member. In a state of being supported by the member, one member of the support member and the lock member is elastically deformed so as to sandwich the other member between the contact plate portions of the one member to form a deflection. Due to the urging force generated by the bending, the contact plate portion of the one member attaches the contact plate portion of the other member at the contact portion between the engaging portion and the engaged portion. (J) The one that is elastically deformed when the other member moves relative to the one member due to the action of a predetermined external force on the seat track slide device. It is configured so that the contact state between the engaging portion and the engaged portion is maintained by the member moving following the member, and (K) of the engaging portion and the engaged portion. One is composed of a tapered through hole and the other is composed of a protruding portion formed by a hemispherical ridge. (L) The one member is the contact plate portion as compared with that before assembling the other member. in a state of being elastically deformed so as to expand the spacing supports a said other member, and the contact plate portion is solved by widespread while inclined.

Also in the second seat track slide device of the present invention configured as described above, when the lock member is supported by the support member, one of the support member and the lock member sandwiches the other member. As a result, it is elastically deformed to form a deflection. Then, the contact plate portion of one member urges the contact plate portion of the other member at the contact portion between the engaging portion and the engaged portion by the urging force generated by the bending. With such a configuration, even if the lock member moves relative to the support member, the elastically deformed member located on the outer side follows the movement. That is, since the contact state between the engaged portion and the engaged portion is maintained, it is possible to prevent the engaged portion and the engaged portion from being separated from each other and a gap being formed between them. This makes it possible to suppress noise when it occurs when the gap disappears.
Further, in such a case, the engaging portion and the engaged portion are easily brought into close contact with each other, and the contact state between the engaging portion and the engaged portion is further easily maintained.

Further, according to the third seat track slide device of the present invention, the above-mentioned problems are (A) a lower rail fixed to the floor of the vehicle body and (B) fixed to the seat and movably supported by the lower rail. (C) A plurality of lock holes arranged side by side along the moving direction of the upper rail in the lower rail, and (D) attached to the upper rail so as to move between the lock position and the unlock position. A lock member that is supported by (E) a support member provided on the upper rail and can be engaged with and detached from the lock hole by operating the handle, and (F) the support member on the upper rail. A plurality of rotation support mechanisms configured to support the lock member in a rotatable state, and (G) the rotation support mechanism, separated from each other on the rotation center line of the lock member. (H) One of the relative rotating portions is sandwiched between the contact plate portion of the support member, the contact plate portion of the lock member, and the contact plate portion. The intermediate member is provided, and (I) the other relative rotating portion includes a contact plate portion of the support member, a contact plate portion of the lock member, and a contact plate of the support member. An engaged portion formed in the portion and an engaging portion formed in the contact plate portion of the lock member and engaged with the engaged portion are provided, and (J) the lock member supports the lock member. In a state of being supported by the member, one member of the support member and the lock member is elastically deformed so as to sandwich the other member between the contact plate portions of the one member to form a deflection. (K) In one of the relative rotating portions, due to the urging force generated by the bending, the contact plate portion of the one member becomes the contact plate portion of the other member via the intermediate member. (L) The seat track slide device is elastically deformed when the other member moves relative to the one member due to the action of a predetermined external force . It is configured so that the contact state between each of the contact plate portions and the intermediate member is maintained by the one member following and moving. (M) The one member is a member of the other member. The other member is supported in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before assembly, and (N) the base end of each of the contact plate portions of the one member. The portion is the other in the holding direction of the contact plate portion. In a state of being arranged inside the base end portion of each of the contact plate portions of the members, each of the contact plate portions of the one member spreads while being inclined, and (О) the other relative. In the rotating portion, the contact plate portion of the one member urges the contact plate portion of the other member at the contact portion between the engaging portion and the engaged portion by the urging force. (P) When the other member moves relative to the one member due to the action of a predetermined external force on the seat track slide device , the elastically deformed one member follows. It is solved by being configured so that the contact state between the engaging portion and the engaged portion is maintained by moving the engaging portion.
Also in the third seat track slide device of the present invention configured as described above, it is possible to suppress the generation of noise when the lock member moves relative to the support member and returns to the original position. It will be possible.
Further, the one member supports the other member in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before assembling the other member, and the contact plate portion is It may be spread while sloping.

According to the present invention, it is possible to suppress the generation of noise when the lock member moves relative to the support member and returns to the original position.

It is an assembly perspective view which shows the seat track slide device which concerns on 1st Embodiment. It is a partially disassembled perspective view which shows the lock lever rotation support mechanism in the seat track slide device which concerns on 1st Embodiment. FIG. 3A is a side view showing the seat track slide device according to the first embodiment, and FIG. 3B is a plan view of the same. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3A showing a locked state. It is a figure which shows the unlocked state, and is the cross-sectional view which corresponds to FIG. It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 1st Embodiment. It is explanatory drawing about the effect of this invention. It is a partial cross-sectional view which shows the modification of 1st Embodiment (the 1). It is a partial cross-sectional view which shows the modification of 1st Embodiment (the 2). It is a partial cross-sectional view which shows the modification of the 1st Embodiment (the 3). It is a partial cross-sectional view which shows the modification of 1st Embodiment (the 4). FIG. 5 is a partial cross-sectional view showing a modified example of the first embodiment (No. 5). It is a partial cross-sectional view which shows the modification of the 1st Embodiment (the 6). It is a partial cross-sectional view which shows the modification of the 1st Embodiment (the 7). It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 2nd Embodiment (the 1). It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 2nd Embodiment (the 2). It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 3rd Embodiment (the 1). It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 3rd Embodiment (the 2). It is a partial cross-sectional view which shows the lock lever rotation support mechanism which concerns on 4th Embodiment. It is explanatory drawing of the lock lever rotation support mechanism of the conventional example, and is the figure which shows the situation where the lock lever moved relative to the lock bracket.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It should be noted that the embodiments described below are for facilitating the understanding of the present invention and do not limit the present invention. That is, the present invention can be modified and improved without deviating from the gist thereof, and it goes without saying that the present invention includes an equivalent thereof.

<First Embodiment>
The vehicle seat truck slide device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. The vehicle seat truck slide device according to the present embodiment has the same basic configuration as the vehicle seat truck slide device described in Patent Document 1 (Japanese Unexamined Patent Publication No. 2001-47896). That is, a pair of lower rails 3 are fixed to the floor of the vehicle body on both sides in the left-right direction. Further, a pair of left and right upper rails 5 are fixed to the lower portion of the seat 4. Further, as shown in FIG. 1, a pair of left and right upper rails 5 are fitted into the corresponding lower rails 3 and supported so as to be movable in the front-rear direction (in the direction of the arrow with the symbol X in FIG. 1).

Further, as shown in FIG. 1, a plurality of lock holes 6 are arranged side by side in the pair of left and right lower rails 3 along the moving direction (front-back direction X) of the upper rails 5. Further, the pair of left and right upper rails 5 project upward from the upper ends of the corresponding lower rails 3, and a lock lever rotation support mechanism M is attached to the projecting portion.

Further, the lower rail 3 and the upper rail 5 arranged on the left side and the lower rail 3 and the upper rail 5 arranged on the right side have the same structure as each other. The pair of left and right lock lever rotation support mechanisms M are linked to each other by being connected by a U-shaped handle 7. Note that FIG. 1 shows only one lower rail 3 and upper rail 5.

The handle 7 includes a handle lever 8 rotatably supported by a support shaft 8a for each of the pair of left and right upper rails 5, and a U-shaped handle rod 9 connected to the pair of left and right handle levers 8. I have. The handle lever 8 has a pressing portion 10 that can be interlocked with the lock lever rotation support mechanism M. A torsion coil spring 11 is wound around the support shaft 8a, and the pressing portion 10 is urged upward by the elastic force of the torsion coil spring 11. Further, when the handle rod 9 is lifted upward against the elastic force of the torsion coil spring 11, both the left and right pair of handle levers 8 rotate about the support shaft 8a. As a result, the pressing portion 10 moves downward.

The lock lever rotation support mechanism M corresponds to the rotation support mechanism of the present invention, and as shown in FIG. 2, the lock bracket 12 corresponding to the support member, the lock lever 13 corresponding to the lock member, and the rod-shaped spring 14 And have.

The lock bracket 12 is attached to the upper rail 5 above the lower rail 3. Further, the lock bracket 12 has a through hole 15 that can face each of the lock holes 6 on the outside of the lower rail 3. Further, the lock bracket 12 has a pair of front and rear support plate portions 16 as portions for supporting the lock lever 13. Each support plate portion 16 is made of an L-shaped elastic member, and has a front-rear extending portion 16s extending in the front-rear direction and a contact plate portion 22 orthogonal to the front-rear extending portion 16s. The pair of front and rear extending portions 16s are overlapped with the base portion 12x located at the upper end portion of the lock bracket 12, and are further attached to the base portion 16t by rivets.

The pair of front and rear contact plate portions 22 extend in the left-right direction, and the lock lever 13 is supported by the tip portions thereof. More specifically, the contact plate portion 22 of the front support plate portion 16 and the contact plate portion 22 of the rear support plate portion 16 are separated from each other in the front-rear direction, and the lock lever 13 is placed between them. It is sandwiched and supported.

The lock lever 13 is rotatably supported by a pair of front and rear support plate portions 17 (cantilever-shaped arms) with respect to the pair of front and rear support plate portions 16 of the lock bracket 12, and is engaged with and disengaged from each lock hole 6. It has a lock claw 18. Further, the lock lever 13 has an interlocking portion 19 that can engage with the pressing portion 10 of the handle lever 8.

The rod-shaped spring 14 is hooked on the lock bracket 12 and the lock lever 13. The elastic force of the rod-shaped spring 14 urges the lock lever 13 to bring it into the locked state shown in FIGS. 3 and 4.

Next, the operation flow of the seat truck will be described. First, the locked state shown in FIG. 4 will be described in a state in which the pair of left and right upper rails 5 are moved to a desired position together with the seat with respect to the pair of left and right lower rails 3 on the floor. In such a state, the handle 7 is in the locked position. Further, the handle lever 8 is rotated by the elastic force of the torsion coil spring 11, and the pressing portion 10 is separated upward from the interlocking portion 19 of the lock lever 13. Further, the lock lever 13 is rotated by the elastic force of the rod-shaped spring 14, and the lock claw 18 is engaged in the lock hole 6 of the lower rail 3 through the through hole 15 of the lock bracket 12, and is also inserted into the through hole 20 of the upper rail 5. It has been inserted.

Next, the unlocked state shown in FIG. 5 will be described. In the above-mentioned locked state, when the handle 7 is lifted upward against the elastic force of the torsion coil spring 11 to the unlocked position, the pressing portion 10 presses the interlocking portion 19 of the lock lever 13 downward and the lock lever 13 has a rod shape. It rotates against the elastic force of the spring 14. As a result, the lock claw 18 is separated from the through hole 20 of the upper rail 5, the lock hole 6 of the lower rail 3, and the through hole 15 of the lock bracket 12, and the lock is released.

Then, while the handle 7 is lifted in the unlocked state, both the left and right upper rails 5 are moved to desired positions together with the seat 4 with respect to both the left and right lower rails 3, and then the handle 7 is released to return to the locked state.

Hereinafter, the details of the lock lever rotation support mechanism M will be described. As shown in FIG. 6, the lock lever rotation support mechanism M is provided with a pair of front and rear relative rotation portions 21 that are separated from each other on the rotation center axis 13a of the lock lever 13. Each of the relative rotating portions 21 has a contact plate portion 22 formed on the pair of front and rear support plate portions 16 of the lock bracket 12 and a contact plate formed on the pair of front and rear support plate portions 17 of the lock lever 13. A portion 23 and an intermediate member 24 sandwiched between the contact plate portions 22 and 23 are provided. The intermediate member 24 is a sphere (steel ball).

Further, the contact plate portions 22 and 23 are formed with hemispherical concave contact surfaces 22a and 23a having a radius of curvature larger than the radius of curvature of the outer peripheral spherical surface 24a of the intermediate member 24. These hemispherical concave contact surfaces 22a and 23a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a relatively movable state. As a result, the lock lever 13 on the upper rail 5 is supported by the lock bracket 12 in a rotatable state. In the present embodiment, the hemispherical concave contact surfaces 22a and 23a of the contact plate portions 22 and 23 and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a state where the rotation center axis 13a of the lock lever 13 is not displaced. ing. In other words, the hemispherical concave contact surfaces 22a and 23a and the outer peripheral spherical surface 24a are formed so that the rotation center axis 13a of the lock lever 13 does not deviate from each other.

Further, in a state where the lock lever 13 is supported by the lock bracket 12, the lock lever 13 is located more inside and the lock bracket 12 is located outside. More specifically, the lock lever 13 is arranged at a position sandwiched between the contact plate portions 22 of the pair of front and rear support plate portions 16 included in the lock bracket 12. On the other hand, the lock bracket 12 (strictly speaking, a pair of front and rear support plate portions 16) supports the lock lever 13 in a state of being elastically deformed so that the distance between the contact plate portions 22 is wider than that before the lock lever 13 is assembled. .. That is, the lock bracket 12 is bent while supporting the lock lever 13. Then, due to the urging force generated by this bending, the contact plate portions 22 of the pair of front and rear support plate portions 16 of the lock bracket 12 urge the contact plate portions 23 of the lock lever 13 inward via the intermediate member 24. To do.

As described above, when the load in the front-rear direction unintentionally acts on the lock lever 13 and the lock lever 13 moves relative to the lock bracket 12 in the front-rear direction, the bending caused in the lock bracket 12 is eliminated. As a result, even if the lock lever 13 moves with respect to the lock bracket 12, the contact plate portion 22 of the lock bracket 12 (strictly speaking, the contact plate portion 22 on the side opposite to the direction in which the lock lever 13 moves) remains. As shown in FIG. 7, the contact state with the intermediate member 24 is maintained. As a result, a gap is generated between the contact plate portion 22 and the intermediate member 24, and when this gap disappears (that is, when the contact plate portion 22 separated from the intermediate member 24 comes into contact with the intermediate member 24 again). It is possible to effectively suppress the generation of noise.

As for the first embodiment, a modified example can be considered as shown in FIGS. 8A to 8G. Although these modifications differ from the above-described configuration (specifically, the configuration shown in FIG. 6) in the following points, they have the same effects as the above-mentioned effects. In addition, each figure of FIGS. 8A to 8G illustrates the rear contact plate portions 22 and 23 of each of the lock bracket 12 and the lock lever 13.

In the modified example shown in FIG. 8A, in each of the relative rotating portions 21, contact holes 26 are formed in the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13. Further, the contact edge 26a having a circular shape on the inner peripheral surface of these contact holes 26 and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a relatively movable state. As a result, the lock lever 13 is supported by the lock bracket 12 in a rotatable state. The contact edge 26a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a state where the rotation center shaft 13a of the lock lever 13 does not shift.

In the modified example shown in FIG. 8B, in each of the relative rotating portions 21, conical concave contact surfaces 22a and 23a are formed on the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13. These conical concave contact surfaces 22a and 23a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a relatively movable state. As a result, the lock lever 13 is supported by the lock bracket 12 in a rotatable state. The conical concave contact surfaces 22a and 23a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a state where the rotation center axis 13a of the lock lever 13 does not shift.

In the modified example shown in FIG. 8C, in each of the relative rotating portions 21, the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13 have a radius of curvature equal to the radius of curvature of the outer peripheral spherical surface 24a of the intermediate member 24. The hemispherical concave contact surfaces 22a and 23a are formed. Further, these contact surfaces 22a and 23a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a relatively movable state. As a result, the lock lever 13 is supported by the lock bracket 12 in a rotatable state. The hemispherical concave contact surfaces 22a and 23a and the outer peripheral spherical surface 24a of the intermediate member 24 are in contact with each other in a state where the rotation center axis 13a of the lock lever 13 does not shift.

In the modified example shown in FIG. 8D, in each of the relative rotating portions 21, one of the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13 has a contact plate portion 23 that is shown in FIG. It has the same configuration as the plate portion 23. The other contact plate portion 22 has the same configuration as the contact plate portion 22 shown in FIG. 8A.

In the modified example shown in FIG. 8E, in each of the relative rotating portions 21, one of the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13 has the contact plate portion 23 shown in FIG. 8B. It has the same configuration as the unit 23. The other contact plate portion 22 has the same configuration as the contact plate portion 22 shown in FIG. 8C.

In the modified example shown in FIGS. 8F and 8G, one of the contact holes 26 formed in the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13 (in the figure, the contact plate portion 22 of the lock bracket 12). The formed contact hole 26) is a tapered hole, strictly speaking, a tapered hole that shrinks toward the outside. Other configurations are the same as those in FIGS. 8A and 8D.

The intermediate member 24 is not limited to a sphere, and the shape thereof may be arbitrarily set such as a cube shape, a shape in which cones are united on the bottom surface, and a columnar shape.

<Second embodiment>
Next, the vehicle seat truck slide device according to the second embodiment of the present invention will be described with reference to FIG. 9A. The vehicle seat truck slide device according to the second embodiment has the same configuration as the vehicle seat truck slide device according to the first embodiment, except for the relative rotating portion 21.

In the second embodiment, the above-mentioned intermediate member 24 is omitted in each relative rotating portion 21. On the other hand, as shown in FIG. 9A, a hemispherical convex contact surface 22a (convex portion) is formed on the contact plate portion 22 of the lock bracket 12. Further, a hemispherical concave contact surface 23a (recess) is formed on the contact plate portion 23 of the lock lever 13. The hemispherical convex contact surface 22a and the hemispherical concave contact surface 23a are engaged (specifically, they are applied to each other and fitted to each other), and are in direct contact with each other. That is, the hemispherical convex contact surface 22a corresponds to the engaging portion and corresponds to the hemispherical concave contact surface 23a.

Further, the radius of curvature of the hemispherical concave contact surface 23a is larger than the radius of curvature of the hemispherical convex contact surface 22a. As a result, the hemispherical convex contact surface 22a and the hemispherical concave contact surface 23a come into contact with each other in a state in which they can be relative to each other. As a result, the lock lever 13 is supported in a rotatably state with respect to the lock bracket 12. The hemispherical convex contact surface 22a and the hemispherical concave contact surface 23a are in contact with each other without the rotation center shaft 13a of the lock lever 13 being displaced.

Further, in the second embodiment, as in the first embodiment, and in a state where the lock lever 13 is supported by the lock bracket 12, the lock lever 13 is located more inside, and the lock bracket 12 is more. Located on the outside. Then, the lock bracket 12 is elastically deformed so that the distance between the contact plate portions 22 is wider than that before the lock lever 13 is assembled, and the lock lever 13 is sandwiched between the contact plate portions 22 to support the lock lever 13. ing. That is, the lock bracket 12 is bent while supporting the lock lever 13. Then, by the urging force generated by this bending, the contact plate portion 22 of the lock bracket 12 urges the contact plate portion 23 of the lock lever 13 inward at the contact portions of the contact surfaces 22a and 23a.

As described above, the same effect as that of the first embodiment can be obtained in the second embodiment. That is, even if the lock lever 13 moves with respect to the lock bracket 12, the contact states of the contact surfaces 22a and 23a are maintained. Therefore, it is possible to effectively suppress the generation of noise when the contact surfaces 22a and 23a are separated from each other and a gap is generated between them and the gap disappears.

In the above embodiment, the contact surface 22a formed on the contact plate portion 22 of the lock bracket 12 has a hemispherical convex shape, and the contact surface 23a formed on the contact plate portion 23 of the lock lever 13 has a hemispherical concave surface. It was decided that it was in the shape. However, the present invention is not limited to this, and the case in which the above contents are reversed, that is, the contact surface 22a formed on the contact plate portion 22 of the lock bracket 12 has a hemispherical concave surface shape, and the contact of the lock lever 13 The contact surface 23a formed on the plate portion 23 may have a hemispherical convex surface shape.

Further, as shown in FIG. 9B, one of the contact surfaces 22a and 23a formed on the contact plate portions 22 and 23 of the lock bracket 12 and the lock lever 13 has a hemispherical convex shape, while the other has a hemispherical convex shape. It may have a conical concave shape.

<Third Embodiment>
Next, the vehicle seat truck slide device according to the third embodiment of the present invention will be described with reference to FIG. 10A. The vehicle seat truck slide device according to the third embodiment has the same configuration as the vehicle seat truck slide device according to the first embodiment, except for the relative rotating portion 21.

In the third embodiment, as shown in FIG. 10A, in each relative rotating portion 21, a hemispherical convex contact surface 22a (a protrusion formed by hemispherically rising) is formed on the contact plate portion 22 of the lock bracket 12. Part) is formed. On the other hand, a contact hole 26, which is a through hole, is formed in the contact plate portion 23 of the lock lever 13. The contact hole 26 is a tapered hole, and has a shape in which the opening width becomes narrower toward the inside.

Then, the contact edge 26a having a circular shape on the inner peripheral surface of the contact hole 26 and the hemispherical convex contact surface 22a are engaged with each other. That is, the contact edge 26a of the contact hole 26 corresponds to the engaged portion, and the hemispherical convex contact surface 22a corresponds to the engaging portion. Then, in the third embodiment, the contact edge 26a formed by the inner peripheral surface of the contact hole 26 and the hemispherical convex contact surface 22a are in contact with each other in a relatively movable state. As a result, the lock lever 13 is supported in a rotatable state with respect to the lock bracket 12. The contact edge 26a and the hemispherical convex contact surface 22a are in contact with each other in a state where the rotation center shaft 13a of the lock lever 13 does not shift.

Further, in the third embodiment, similarly to the first embodiment, and in a state where the lock lever 13 is supported by the lock bracket 12, the lock lever 13 is located more inside, and the lock bracket 12 is more. Located on the outside. Then, the lock bracket 12 is elastically deformed so that the distance between the contact plate portions 22 is wider than that before the lock lever 13 is assembled, and the lock lever 13 is sandwiched between the contact plate portions 22 to support the lock lever 13. ing. That is, the lock bracket 12 is bent while supporting the lock lever 13. Then, due to the urging force generated by this bending, the contact plate portion 22 of the lock bracket 12 urges the contact plate portion 23 of the lock lever 13 inward at the contact portion between the contact edge 26a of the contact hole 26 and the contact surface 22a. To do.

As described above, the same effect as that of the first embodiment can be obtained in the third embodiment. That is, even if the lock lever 13 moves with respect to the lock bracket 12, the contact state between the contact edge 26a of the contact hole 26 and the contact surface 22a is maintained. Therefore, it is possible to effectively suppress the generation of noise when the contact surface 22a is separated from the contact edge 26a of the contact hole 26 to generate a gap and the gap disappears.

Although the contact hole 26 is a tapered hole in the configuration shown in FIG. 10A, even if the contact hole 26 is a non-tapered hole (straight-shaped hole) as shown in FIG. 10B. Good.

By the way, in the embodiments described above (first embodiment to third embodiment), the pair of front and rear relative rotating portions 21 have a symmetrical structure, that is, a similar structure. It is not limited to this. That is, of the pair of front and rear relative rotating portions 21, one of the relative rotating portions 21 has a structure according to the first embodiment (a structure having an intermediate member 24), and the other relative rotating portion 21 is the first. It may be a structure according to the second or third embodiment (a structure having no intermediate member 24).

<Fourth Embodiment>
Next, the vehicle seat truck slide device according to the fourth embodiment of the present invention will be described with reference to FIG. Most of the vehicle seat truck slide devices according to the fourth embodiment have the same configuration as the vehicle seat truck slide devices according to the third embodiment.

On the other hand, in the fourth embodiment, when the lock lever 13 is supported by the lock bracket 12, the lock lever 13 is located on the outer side and the lock bracket 12 is located on the inner side. More specifically, the lock bracket 12 (strictly speaking, the contact plate portion 22 of the pair of front and rear support plate portions 16) is located between the contact plate portions 23 of the pair of front and rear support plate portions 17 of the lock lever 13. It is sandwiched.

Further, in each relative rotating portion 21, as shown in FIG. 11, a hemispherical convex contact surface 23a is formed on the contact plate portion 23 of the lock lever 13. Further, the contact plate portion 22 of the lock bracket 12 is formed with a contact hole 26 which is a tapered through hole. Then, in the fourth embodiment, the contact edge 26a having a circular shape on the inner peripheral surface of the contact hole 26 and the hemispherical convex contact surface 23a of the contact plate portion 23 are in contact with each other in a relatively movable state. As a result, the lock lever 13 is supported in a rotatable state with respect to the lock bracket 12. The contact edge 26a and the hemispherical convex contact surface 23a are in contact with each other in a state where the rotation center shaft 13a of the lock lever 13 does not shift.

Further, in the fourth embodiment, when the lock lever 13 is supported by the lock bracket 12, the distance between the contact plate portions 23 of the lock lever 13 is wider than that before the lock lever 13 is assembled to the lock bracket 12. It is elastically deformed and the lock bracket 12 is sandwiched between the contact plate portions 23. That is, the lock lever 13 is bent while being supported by the lock bracket 12. Then, due to the urging force generated by this bending, the contact plate portion 23 of the lock lever 13 urges the contact plate portion 22 of the lock bracket 12 inward at the contact portion between the contact edge 26a of the contact hole 26 and the contact surface 23a. To do.

As described above, the same effect as that of the first embodiment can be obtained in the fourth embodiment. That is, even if the lock lever 13 moves with respect to the lock bracket 12, the contact state between the contact edge 26a of the contact hole 26 and the contact surface 23a is maintained. Therefore, it is possible to effectively suppress the generation of noise when the contact surface 23a is separated from the contact edge 26a of the contact hole 26 and a gap is generated and the gap disappears.

3 Lower rail, 5 Upper rail 6 Lock hole, 7 Handle 8 Handle lever, 8a Support shaft 9 Handle rod, 10 Pressing part 11 Torsion coil spring 12 Lock bracket (support member)
12x base 13 lock lever (lock member)
13a Rotation center line 14 Rod-shaped spring, 15 Through hole 16,17 Support plate part 16s Front and rear extension part 18 Lock claw, 19 Interlocking part 20 Through hole, 21 Relative rotation part 22, 23 Contact plate part 22a, 23a Contact surface 24 Intermediate member, 24a Outer spherical surface 26 Contact hole, 26a Contact edge M Lock lever rotation support mechanism (rotation support mechanism)

Claims (3)

The lower rail fixed to the floor of the car body,
An upper rail that is fixed to the seat and movably supported with respect to the lower rail,
A plurality of lock holes arranged side by side in the lower rail along the moving direction of the upper rail,
A handle attached to the upper rail and operated to move between a lock position and an unlock position.
A lock member that is supported by a support member provided on the upper rail and can be engaged with and disengaged from the lock hole by operating the handle.
The upper rail includes a rotation support mechanism configured to support the lock member in a rotatable state by the support member.
The rotation support mechanism is provided with a plurality of relative rotation portions separated from each other on the rotation center line of the lock member.
Each of the relative rotating portions is provided with a contact plate portion included in the support member, a contact plate portion included in the lock member, and an intermediate member sandwiched between the contact plate portions.
In a state where the lock member is supported by the support member, one of the support member and the lock member is elastic so as to sandwich the other member between the contact plate portions of the one member. It is deformed to form a deflection, and the contact plate portion of the one member urges the contact plate portion of the other member via the intermediate member by the urging force generated by the deflection. ,
When a predetermined external force acts on the seat track slide device and the other member moves relative to the one member, the elastically deformed one member follows and moves. It is configured so that the contact state between each of the contact plate portions and the intermediate member is maintained.
The one member supports the other member in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before assembling the other member.
A state in which the base end portion of each of the contact plate portions of the one member is arranged inside the base end portion of each of the contact plate portions of the other member in the holding direction of the contact plate portion. A seat track slide device, wherein each of the contact plate portions of the one member expands while being inclined. The lower rail fixed to the floor of the car body,
An upper rail that is fixed to the seat and movably supported with respect to the lower rail,
A plurality of lock holes arranged side by side in the lower rail along the moving direction of the upper rail,
A handle attached to the upper rail and operated to move between a lock position and an unlock position.
A lock member that is supported by a support member provided on the upper rail and can be engaged with and disengaged from the lock hole by operating the handle.
The upper rail includes a rotation support mechanism configured to support the lock member in a rotatable state by the support member.
The rotation support mechanism is provided with a plurality of relative rotation portions separated from each other on the rotation center line of the lock member.
Each of the relative rotating portions includes a contact plate portion of the support member, a contact plate portion of the lock member, an engaged portion formed on the contact plate portion of the support member, and the lock member. An engaging portion formed on the contact plate portion of the above and engaging with the engaged portion is provided.
In a state where the lock member is supported by the support member, one of the support member and the lock member is elastic so as to sandwich the other member between the contact plate portions of the one member. It is deformed to form a deflection, and due to the urging force generated by the deflection, the contact plate portion of the one member is formed, and the other member is formed at the contact portion between the engaging portion and the engaged portion. The contact plate part that has is urged,
When a predetermined external force acts on the seat track slide device and the other member moves relative to the one member, the elastically deformed one member follows and moves. Is configured to maintain the contact state between the engaged portion and the engaged portion.
One of the engaging portion and the engaged portion is composed of a tapered through hole, and the other is composed of a protruding portion formed by hemispherically raised.
The one member supports the other member in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before assembling the other member, and the contact plate portion is inclined. seat track slide apparatus characterized by widespread while. The lower rail fixed to the floor of the car body,
An upper rail that is fixed to the seat and movably supported with respect to the lower rail,
A plurality of lock holes arranged side by side in the lower rail along the moving direction of the upper rail,
A handle attached to the upper rail and operated to move between a lock position and an unlock position.
A lock member that is supported by a support member provided on the upper rail and can be engaged with and disengaged from the lock hole by operating the handle.
The upper rail includes a rotation support mechanism configured to support the lock member in a rotatable state by the support member.
The rotation support mechanism is provided with two relative rotation portions that are separated from each other on the rotation center line of the lock member.
On the other hand, the relative rotating portion includes a contact plate portion included in the support member, a contact plate portion included in the lock member, and an intermediate member sandwiched between the contact plate portions.
On the other hand, the relative rotating portion includes a contact plate portion of the support member, an engaged portion formed on the contact plate portion of the lock member and the contact plate portion of the support member, and the lock member. An engaging portion formed on the contact plate portion and engaged with the engaged portion is provided.
In a state where the lock member is supported by the support member, one of the support member and the lock member is elastic so as to sandwich the other member between the contact plate portions of the one member. It deforms to form a bend,
In one of the relative rotating portions, the contact plate portion of the one member urges the contact plate portion of the other member via the intermediate member by the urging force generated by the bending.
When a predetermined external force acts on the seat track slide device and the other member moves relative to the one member, the elastically deformed one member follows and moves. It is configured so that the contact state between each of the contact plate portions and the intermediate member is maintained.
The one member supports the other member in a state of being elastically deformed so that the distance between the contact plate portions is wider than that before assembling the other member.
A state in which the base end portion of each of the contact plate portions of the one member is arranged inside the base end portion of each of the contact plate portions of the other member in the holding direction of the contact plate portion. Then, each of the contact plate portions of the one member is inclined and expanded.
In the other relative rotating portion, due to the urging force, the contact plate portion of the one member becomes the contact plate portion of the other member at the contact portion between the engaging portion and the engaged portion. To urge,
When a predetermined external force acts on the seat track slide device and the other member moves relative to the one member, the elastically deformed one member follows and moves. A seat track slide device characterized in that the contact state between the engaged portion and the engaged portion is maintained.

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