JP7615853B2 - Vehicle slide rail device - Google Patents

Description

An embodiment of the present invention relates to a slide rail device for a vehicle.

Conventionally, a slide rail device for a vehicle is known that includes a rail and a slider that can move along the rail. The slider may be provided with a mechanism that suppresses rattling (vibration) of the slider by contacting the rail.

For example, slopes that support the moving bodies are provided at both longitudinal ends of the rail. When two moving bodies are pulled toward each other by a spring, the moving bodies move along the slopes and are pressed against the inner surface of the rail (Patent Document 1).

JP 2013-252758 A

However, in the conventional configuration, a moving body is attached to each end of the rail, and a spring extends between the moving bodies at both ends. This results in a large mechanism for suppressing rattling in the longitudinal direction of the rail.

Therefore, the present invention has been made in consideration of the above, and provides a vehicle slide rail device that can prevent the mechanism for suppressing rattle from becoming too large.

As an example, a vehicle slide rail device according to an embodiment of the present invention includes a rail, a slider, a casing, a first pressing unit, and a second pressing unit. The rail has an inner surface. The slider is attached to the rail so as to be movable along the rail. The casing has a support surface facing the inner surface and is attached to the slider. The first pressing unit has a first inclined surface facing the inner surface and inclined obliquely with respect to the inner surface, a second inclined surface facing the inner surface and inclined obliquely with respect to the inner surface at an angle different from the first inclined surface, a first moving body supported on the support surface, a second moving body supported on the support surface, and a first elastic member connected to the first moving body and the second moving body and biasing the first moving body and the second moving body so that the first inclined surface and the second inclined surface approach the inner surface. The second pressing unit has a third moving body supported on the first inclined surface, a fourth moving body supported on the second inclined surface, and a second elastic member connected to the third moving body and the fourth moving body to urge the third moving body in a direction approaching the inner surface along the first inclined surface and to urge the fourth moving body in a direction approaching the inner surface along the second inclined surface, and the third moving body and the fourth moving body urged by the second elastic member press the inner surface. Therefore, as an example, the second pressing unit, together with the first pressing unit, presses the inner surface of the rail, and can suppress the slider from rattling (vibrating) against the rail. Furthermore, the first inclined surface, the second inclined surface, the third moving body, and the fourth moving body are moved by the first elastic member and the second elastic member. Therefore, the distance traveled in the direction toward the inner surface of the third moving body and the fourth moving body is greater than the distance traveled in the direction along the inner surface of the first inclined surface, the second inclined surface, the third moving body, and the fourth moving body. Therefore, the casing, the first pressing unit, and the second pressing unit can be prevented from becoming larger in size in the direction along the inner surface.

In the above-mentioned vehicle slide rail device, as an example, the support surface has a third inclined surface that supports the first moving body and is inclined obliquely with respect to the inner surface, and a fourth inclined surface that supports the second moving body and is inclined obliquely with respect to the inner surface at an angle different from that of the third inclined surface. The first inclined surface is provided on the first moving body. The second inclined surface is provided on the second moving body. The first elastic member urges the first moving body in a direction approaching the inner surface along the third inclined surface and urges the second moving body in a direction approaching the inner surface along the fourth inclined surface. Thus, as an example, the first inclined surface and the second inclined surface can be urged in a direction approaching the inner surface by the casing, the first moving body, the second moving body, and the first elastic member. Therefore, the first pressing unit can suppress an increase in the number of parts.

In the above-mentioned vehicle slide rail device, as an example, one of the first moving body and the third moving body is provided with a first guide groove. The other of the first moving body and the third moving body has a first guide arranged inside the first guide groove. One of the second moving body and the fourth moving body is provided with a second guide groove. The other of the second moving body and the fourth moving body has a second guide arranged inside the second guide groove. Therefore, as an example, the first moving body and the third moving body can be prevented from coming off from each other. Furthermore, the second moving body and the fourth moving body can be prevented from coming off from each other.

In the above-mentioned vehicle slide rail device, as one example, the casing is provided with a third guide groove that opens to the support surface and extends in a direction in which the slider can move. The first moving body has a third guide arranged inside the third guide groove and is movable along the third guide groove. The second moving body has a fourth guide arranged inside the third guide groove and is movable along the third guide groove. Therefore, as one example, the first moving body and the second moving body can be prevented from falling off the support surface.

In the above-mentioned vehicle slide rail device, as an example, the third moving body has a first abutment surface that extends along the inner surface and abuts against the inner surface, and is biased by the second elastic member to press the first abutment surface against the inner surface. The fourth moving body has a second abutment surface that extends along the inner surface and abuts against the inner surface, and is biased by the second elastic member to press the second abutment surface against the inner surface. Thus, as an example, since the third moving body and the fourth moving body directly abut against the inner surface, there is no need for a member interposed between the third moving body and the inner surface and the fourth moving body. Therefore, the second pressing unit can suppress an increase in the number of parts.

FIG. 1 is a perspective view that illustrates a seat device according to a first embodiment. FIG. 2 is an exploded perspective view of the slider of the first embodiment. FIG. 3 is a front view showing the rail and the slider of the first embodiment. FIG. 4 is a perspective view showing the shock absorber of the first embodiment. FIG. 5 is an exploded perspective view of the shock absorber according to the first embodiment. FIG. 6 is a cross-sectional view showing a portion of the lower rail and the upper rail and the shock absorber according to the first embodiment. FIG. 7 is a cross-sectional view showing a portion of the lower rail and the upper rail and the shock absorber according to the second embodiment.

(First embodiment)
The first embodiment will be described below with reference to FIGS. 1 to 6. In this specification, components according to the embodiment and their descriptions may be described in a number of ways. The components and their descriptions are merely examples and are not limited by the expressions in this specification. The components may be identified by names different from those in this specification. The components may also be described by expressions different from those in this specification.

Figure 1 is a perspective view that shows a schematic diagram of a seat device 10 according to a first embodiment. The seat device 10 is mounted on a vehicle 1 such as a four-wheeled vehicle, and has a slide rail device 11 and a seat 12. The seat 12 has a seat cushion 12a and a seat back 12b that is rotatably attached to the seat cushion 12a.

As shown in each drawing, for the sake of convenience, the X-axis, Y-axis, and Z-axis are defined in this specification. The X-axis, Y-axis, and Z-axis are mutually perpendicular. The X-axis is provided along the left-right direction of the vehicle 1. The Y-axis is provided along the front-rear direction of the vehicle 1. The Z-axis is provided along the up-down direction of the vehicle 1.

Furthermore, in this specification, the X direction, Y direction, and Z direction are defined. The X direction is a direction along the X axis, and includes the +X direction (right direction) indicated by the arrow on the X axis, and the -X direction (left direction) which is the opposite direction of the arrow on the X axis. The Y direction is a direction along the Y axis, and includes the +Y direction (forward direction) indicated by the arrow on the Y axis, and the -Y direction (backward direction) which is the opposite direction of the arrow on the Y axis. One of the +Y direction and the -Y direction may also be referred to as the first direction. The other of the +Y direction and the -Y direction may also be referred to as the second direction. The Z direction is a direction along the Z axis, and includes the +Z direction (upward direction) indicated by the arrow on the Z axis, and the -Z direction (downward direction) which is the opposite direction of the arrow on the Z axis.

The slide rail device 11 can slide the seat 12 in the Y direction relative to the floor 1a of the vehicle 1. The slide rail device 11 has two rails 15, two sliders 16, and two drive devices 17.

Each of the two rails 15 has a lower rail 21. The lower rail 21 is attached to the floor 1a of the vehicle 1 so as to extend in the Y direction (+Y direction and -Y direction). The floor 1a faces approximately in the +Z direction. Note that the floor 1a may have a portion facing in another direction. The two lower rails 21 are disposed spaced apart from each other in the X direction.

Figure 2 is an exploded perspective view of the slider 16 of the first embodiment. Each of the two sliders 16 has an upper rail 22, an attachment 23, and a number of rollers 24. Furthermore, a number of shock absorbers 25 are attached to the slider 16. The shock absorbers 25 may also be referred to as pressing mechanisms.

The upper rails 22 extend in the Y direction and are attached to the lower rails 21 so as to be slidable in the Y direction along the lower rails 21. The attachments 23 are attached to the upper rails 22. The two upper rails 22 support the seat 12.

Figure 3 is a front view showing the rail 15 and slider 16 of the first embodiment. As shown in Figure 3, the lower rail 21 is made, for example, from a single piece of bent metal sheet and has a substantially C-shaped cross section. However, the lower rail 21 is not limited to this example. The lower rail 21 has a bottom wall 31, two outer walls 32, two connecting walls 33, and two inner walls 34.

The bottom wall 31 is a generally plate-shaped portion extending along the XY plane. The bottom wall 31 may have projections and recesses. The bottom wall 31 is attached to the floor 1a, for example, by bolts. The bottom wall 31 may also be attached to the floor 1a via a bracket, for example.

The two outer walls 32 extend from both ends of the bottom wall 31 in the X direction, approximately in the +Z direction. The two inner walls 34 are located between the two outer walls 32, and extend approximately in the Z direction. In the X direction, the two inner walls 34 are spaced apart from each other and from the two outer walls 32. The connecting wall 33 extends between the end of the outer wall 32 in the +Z direction and the end of the inner wall 34 in the +Z direction. The end of the inner wall 34 in the -Z direction is spaced apart from the bottom wall 31.

An internal space 37 is provided inside the lower rail 21, which is formed in a roughly C-shape. An opening 38 is provided in the lower rail 21 between the two inner walls 34 in the X direction. The opening 38 is a groove that connects the internal space 37 to the outside of the lower rail 21 and extends in the Y direction.

Each of the two connecting walls 33 has an inner surface 33a. The inner surface 33a faces inward into the internal space 37 and forms (defines, partitions) a part of the internal space 37. The inner surface 33a faces in the -Z direction and is a substantially flat surface extending in the Y direction. The inner surface 33a faces the floor 1a. Note that the inner surface 33a may face in another direction, may be a curved surface, or may have irregularities.

The upper rail 22 is made, for example, from two metal plates that are bent and connected together. However, the upper rail 22 is not limited to this example. As shown in Figures 2 and 3, the upper rail 22 has an upper wall 41, two insertion walls 42, two curved walls 43, two extension walls 44, and two mounting walls 45.

The upper wall 41 is a generally plate-shaped portion that spreads along the XY plane and extends in the Y direction. In the example of FIG. 2, the upper wall 41 is formed from two metal plates. However, the upper wall 41 may be formed from a single member. As shown in FIG. 3, the upper wall 41 is located outside the lower rail 21.

The two insertion walls 42 extend from both ends of the upper wall 41 in the X direction in approximately the -Z direction. The two insertion walls 42 pass through the opening 38 of the lower rail 21 and are disposed between the inside and outside of the lower rail 21.

The curved wall 43, the extension wall 44, and the mounting wall 45 are located in the internal space 37 of the lower rail 21. As shown in FIG. 2, the curved wall 43, the extension wall 44, and the mounting wall 45 extend from the end of the insertion wall 42 in the -Z direction and are aligned in the Y direction.

The curved wall 43 is bent so as to extend from the end of the insertion wall 42 in the -Z direction toward the space between the outer wall 32 and inner wall 34 of the lower rail 21. The extension wall 44 extends in approximately the -Z direction from the end of the insertion wall 42 in the -Z direction. The mounting wall 45 extends from the end of the insertion wall 42 in the -Z direction toward the outer wall 32 of the lower rail 21. Notches 45a are provided on both ends of the mounting wall 45 in the Y direction.

The attachment 23 is made, for example, from a single piece of bent metal sheet. However, the attachment 23 is not limited to this example. The attachment 23 has an inner wall 47, an extension wall 48, and a mounting wall 49.

The inner wall 47 is formed along the upper wall 41, the insertion wall 42, and the curved wall 43 of the upper rail 22. The inner wall 47 abuts against the inner surfaces of the upper wall 41, the insertion wall 42, and the curved wall 43, and is attached to the upper rail 22 by, for example, welding or crimping.

The extension wall 48 and the mounting wall 49 are located in the internal space 37 of the lower rail 21. The extension wall 48 and the mounting wall 49 extend from the end of the inner wall 47 in the -Z direction and are aligned in the Y direction.

The extension wall 48 extends from the end of the inner wall 47 in the -Z direction in approximately the -Z direction. The mounting wall 49 extends from the end of the inner wall 47 in the -Z direction toward the outer wall 32 of the lower rail 21. Notches 49a are provided on both ends of the mounting wall 49 in the Y direction.

The rollers 24 are attached to the extension wall 44 of the upper rail 22 and the extension wall 48 of the attachment 23. Each roller 24 can rotate around a central axis extending approximately in the X direction. The rollers 24 roll on the bottom wall 31 of the lower rail 21, allowing the slider 16 to slide smoothly in the Y direction relative to the lower rail 21.

The driving device 17 slides the slider 16 in the Y direction relative to the rail 15. As shown in Figures 2 and 3, the driving device 17 has a rod 51, a nut 52, and a rotation driving mechanism 53. The rod 51 may also be referred to as a screw rod.

The rod 51 is formed in a generally cylindrical shape with a male thread. The rod 51 extends in the Y direction inside the internal space 37 or opening 38 of the lower rail 21. For example, both ends of the rod 51 are fixed to the bottom wall 31 of the lower rail 21 via brackets.

The nut 52 has a female thread that meshes with the male thread of the rod 51. The nut 52 may be movable between a position where it meshes with the rod 51 and a position spaced apart from the rod 51.

The nut 52 is attached to the upper rail 22 via various parts. The nut 52 need only be located inside the upper rail 22 or near the upper rail 22 so as to be able to transmit force to the upper rail 22, and does not need to be fixed to the upper rail 22. The nut 52 need only be supported, held, fastened, or attached by other methods so as to be able to be kept in a predetermined position relative to the upper rail 22. The predetermined position may include multiple positions.

The rotation drive mechanism 53 has a motor 61 and a transmission mechanism 62 as shown in FIG. 2. The motor 61 is, for example, a servo motor, and is driven under the control of an ECU (Electronic Control Unit) of the vehicle 1. The motor 61 is, for example, located outside the slider 16 and attached to the slider 16.

The transmission mechanism 62 transmits the rotation of the drive shaft of the motor 61 to the nut 52. The transmission mechanism 62 has, for example, a shaft, a gear, a worm, a helical gear, and various other components capable of transmitting rotation. The transmission mechanism 62 may also include a reducer.

When the motor 61 rotates the nut 52 via the transmission mechanism 62, the nut 52 that meshes with the rod 51 moves in the Y direction along the rod 51. As a result, the upper rail 22 (slider 16) to which the nut 52 is attached slides in the Y direction relative to the rail 15. In other words, the user can automatically move the slider 16 relative to the rail 15 using the motor 61. This allows the seat device 10 to be used as a power seat.

As described above, the nut 52 may be movable to a position spaced apart from the rod 51. In this case, the user can manually move the upper rail 22 relative to the lower rail 21. This allows the seat device 10 to be used as a manual seat.

As shown in FIG. 2, in this embodiment, four shock absorbers 25 are attached to the slider 16. For example, two shock absorbers 25 are attached to the two mounting walls 45 of the upper rail 22. Furthermore, the other two shock absorbers 25 are attached to the mounting wall 49 of the attachment 23. Note that the number of shock absorbers 25 is not limited to this example.

Figure 4 is a perspective view showing the shock absorber 25 of the first embodiment. Figure 5 is a perspective view showing the shock absorber 25 of the first embodiment in an exploded state. Figure 6 is a cross-sectional view showing a portion of the lower rail 21 and upper rail 22 of the first embodiment and the shock absorber 25.

As shown in FIG. 5, the shock absorber 25 has a casing 70, a first pressing unit 71, and a second pressing unit 72. The shock absorber 25 may further have other components.

The casing 70 of the shock absorber 25 shown in FIG. 6 is attached to the mounting wall 45 of the upper rail 22. The casing 70 of the other shock absorber 25 is attached to the mounting wall 49 of the attachment 23. As a result, the casing 70 is attached to the slider 16 and housed in the internal space 37 of the lower rail 21.

As shown in FIG. 3, in the X direction, the casing 70 is located between the outer wall 32 and the inner wall 34 of the lower rail 21. In the Z direction, the casing 70 is located between the bottom wall 31 and the connecting wall 33.

The casing 70 is made of a synthetic resin such as polyacetal (POM). The casing 70 may be made of other materials. As shown in FIG. 5, the casing 70 has a support frame 81 and two holding frames 82. The support frame 81 and the holding frames 82 are integrally formed.

The support frame 81 is formed in a plate shape extending approximately in the Y direction. As shown in FIG. 6, the support frame 81 has an upper surface 85 and a lower surface 86. The upper surface 85 is an example of a support surface. The upper surface 85 faces the inner surface 33a of the connecting wall 33 of the lower rail 21 via a gap. The lower surface 86 is located on the opposite side of the upper surface 85 and is supported by the mounting wall 45 or the mounting wall 49.

The upper surface 85 has two inclined surfaces 91, 92 and an intermediate surface 93. That is, the inclined surfaces 91, 92 are provided on the casing 70. The inclined surface 91 is an example of a third inclined surface. The inclined surface 92 is an example of a fourth inclined surface. The inclined surfaces 91, 92 and the intermediate surface 93 are each part of the upper surface 85 and face the inner surface 33a of the lower rail 21 via a gap. Note that the upper surface 85 may have other portions.

The inclined surface 91 is inclined obliquely with respect to the inner surface 33a. In this embodiment, the inclined surface 91 is inclined obliquely with respect to the inner surface 33a so that the end 91a in the +Y direction is closer to the inner surface 33a than the end 91b in the -Y direction.

The slope 92 is inclined at an angle different from that of the slope 91 with respect to the inner surface 33a. In this embodiment, the slope 92 is inclined at an angle with respect to the inner surface 33a so that the end 92a in the -Y direction is closer to the inner surface 33a than the end 92b in the +Y direction.

The slope 91 extends in a substantially straight line between the ends 91a and 91b. The slope 92 extends in a substantially straight line between the ends 92a and 92b. Note that the slopes 91 and 92 are not limited to this example, and may be curved or have irregularities.

The intermediate surface 93 is formed to be approximately flat and faces the +Z direction. The intermediate surface 93 is provided between the end 91b of the inclined surface 91 in the -Y direction and the end 92b of the inclined surface 92 in the +Y direction. The intermediate surface 93 may be omitted.

Slope 91 is inclined obliquely with respect to inner surface 33a so as to move away from inner surface 33a as it approaches slope 92. Also, slope 92 is inclined with respect to inner surface 33a so as to move away from inner surface 33a as it approaches slope 91. Note that slopes 91 and 92 are not limited to this example, and may be inclined with respect to inner surface 33a so as to move closer to inner surface 33a as they approach each other.

Slope 91 is inclined, for example, at approximately -5° with respect to inner surface 33a. On the other hand, slope 92 is inclined, for example, at approximately 5° with respect to inner surface 33a. In other words, slope 92 is inclined with respect to inner surface 33a in the opposite direction to slope 91. Note that in this embodiment, slope 91 and slope 92 are inclined at the same angle (number) in opposite directions with respect to inner surface 33a, but this is not limited to the example, and slope 91 may be inclined more than slope 92, for example.

Two guide grooves 95 are further provided in the support frame 81. The guide grooves 95 are an example of a third guide groove. The guide grooves 95, for example, penetrate the support frame 81 in the Z direction and extend in the Y direction. The Y direction is an example of a direction in which the slider 16 can move. The guide grooves 95 open to the upper surface 85 and the lower surface 86. Note that the guide grooves 95 may be bottomed grooves that open to the upper surface 85.

One guide groove 95 opens to the inclined surface 91. The other guide groove 95 opens to the inclined surface 92. The two guide grooves 95 are aligned in the Y direction with a gap between them. The intermediate surface 93 is located between the two guide grooves 95. Note that the support frame 81 may be provided with one guide groove 95 that opens to the inclined surfaces 91, 92 and the intermediate surface 93.

The holding frame 82 protrudes in the +Y and -Y directions from both ends of the support frame 81 in the Y direction. In other words, the support frame 81 is located between the two holding frames 82 and is connected to approximately the center of the holding frames 82 in the Z direction. Note that the holding frame 82 is not limited to this example. The holding frame 82 has an upper part 96 and a lower part 97.

The upper portion 96 protrudes from the upper surface 85 of the support frame 81 in approximately the +Z direction. The lower portion 97 protrudes from the lower surface 86 of the support frame 81 in approximately the -Z direction. Each lower portion 97 has an inner surface 97a, a holding protrusion 97b, and an engagement protrusion 97c. The inner surfaces 97a of the two holding frames 82 face each other with a gap between them.

The holding protrusion 97b protrudes from the inner surface 97a at a position spaced apart in the -Z direction from the lower surface 86 of the support frame 81. The engagement protrusion 97c protrudes from the inner surface 97a between the lower surface 86 of the support frame 81 and the holding protrusion 97b.

The mounting wall 45 of the upper rail 22 or the mounting wall 49 of the attachment 23 is held between the support frame 81 and the retaining protrusion 97b in the Z direction. The lower surface 86 and the retaining protrusion 97b limit the movement of the casing 70 in the Z direction relative to the mounting walls 45, 49.

The mounting wall 45 or the mounting wall 49 is held between the inner surfaces 97a of the two holding frames 82 in the Y direction. The inner surfaces 97a of the two holding frames 82 of the support frame 81 limit the movement of the casing 70 in the Y direction relative to the mounting walls 45, 49.

The engagement protrusion 97c fits into the notches 45a, 49a of the mounting walls 45, 49. The engagement protrusion 97c limits the movement of the casing 70 in the X direction relative to the mounting walls 45, 49. Because the casing 70 is made of synthetic resin, the engagement protrusion 97c can overcome a portion of the mounting walls 45, 49 by elastic deformation and fit into the notches 45a, 49a. As described above, the casing 70 is attached to the mounting wall 45 or the mounting wall 49 with movement in the X direction, Y direction, and Z direction restricted.

The first pressing unit 71 has a first moving body 101, a second moving body 102, and a first elastic member 103. The first pressing unit 71 is not limited to this example, and may have other members.

The first moving body 101 and the second moving body 102 are made of a synthetic resin such as POM. Note that the first moving body 101 and the second moving body 102 may be made of other materials.

The first moving body 101 has a wedge 111 and a guide 112. The guide 112 is an example of a third guide. The wedge 111 has a lower slope 115, an upper slope 116, and an end face 117. That is, the upper slope 116 is provided on the first moving body 101. The upper slope 116 is an example of a first slope.

The lower slope 115 of the first moving body 101 faces the slope 91 and is supported by the slope 91. The lower slope 115 extends along the slope 91 and is shorter than the slope 91. The lower slope 115 is inclined obliquely with respect to the inner surface 33a so that the end 115a in the +Y direction is closer to the inner surface 33a than the end 115b in the -Y direction.

The upper slope 116 is located opposite the lower slope 115. The upper slope 116 faces the inner surface 33a of the rail 15. The upper slope 116 is inclined obliquely with respect to the inner surface 33a so that the end 116a in the -Y direction is closer to the inner surface 33a than the end 116b in the +Y direction. In other words, the lower slope 115 and the upper slope 116 taper in the +Y direction.

The lower slope 115 extends in a substantially straight line between the ends 115a and 115b. The upper slope 116 extends in a substantially straight line between the ends 116a and 116b. Note that the lower slope 115 and the upper slope 116 are not limited to this example, and may be curved or have irregularities.

End face 117 is provided at the end of wedge 111 in the -Y direction. End face 117 faces the -Y direction. End face 117 is provided with recess 118. Recess 118 is a substantially circular hole with a bottom that is recessed from end face 117 in the +Y direction.

The wedge 111 is further provided with a guide groove 119. The guide groove 119 is an example of a first guide groove. The guide groove 119 opens to the upper slope 116 and extends along the upper slope 116 in approximately the Y direction. The approximately Y direction is a direction that is inclined obliquely along the upper slope 116 with respect to the inner surface 33a of the rail 15.

The guide groove 119 is spaced apart from the end 116a of the upper slope 116 in the -Y direction. Furthermore, the guide groove 119 is spaced apart from the recess 118. Note that the recess 118 and the guide groove 119 may be connected to each other.

The guide 112 protrudes from the lower slope 115 in the -Z direction. The guide 112 extends along the lower slope 115. The guide 112 is shorter than the lower slope 115. The guide 112 is spaced apart from the end 115a of the lower slope 115 in the +Y direction.

The guide 112 is fitted into the guide groove 95 of the support frame 81. In other words, the guide 112 is disposed inside the guide groove 95. The guide 112 restricts the movement of the first moving body 101 in the X direction relative to the support frame 81. As described above, the first moving body 101 is attached to the casing 70 so as to be movable along the inclined surface 91 and the guide groove 95.

The second moving body 102 has a wedge 121 and a guide 122. The guide 122 is an example of a fourth guide. The wedge 121 has a lower slope 125, an upper slope 126, and an end face 127. That is, the upper slope 126 is provided on the second moving body 102. The upper slope 126 is an example of a second slope.

The lower slope 125 of the first moving body 101 faces the slope 92 and is supported by the slope 92. The lower slope 125 extends along the slope 92 and is shorter than the slope 92. The lower slope 125 is inclined obliquely with respect to the inner surface 33a so that the end 125a in the -Y direction is closer to the inner surface 33a than the end 125b in the +Y direction.

The upper slope 126 is located on the opposite side of the lower slope 125. The upper slope 126 faces the inner surface 33a of the rail 15. The upper slope 126 is inclined obliquely with respect to the inner surface 33a so that the end 126a in the +Y direction is closer to the inner surface 33a than the end 126b in the -Y direction. In other words, the upper slope 126 is inclined obliquely with respect to the inner surface 33a at an angle different from that of the upper slope 116 of the first moving body 101. The lower slope 125 and the upper slope 126 taper in the +Y direction.

The lower slope 125 extends in a substantially straight line between the ends 125a and 125b. The upper slope 126 extends in a substantially straight line between the ends 126a and 126b. Note that the lower slope 125 and the upper slope 126 are not limited to this example, and may be curved or have irregularities.

The end face 127 is provided at the end of the wedge 121 in the +Y direction. The end face 127 faces the +Y direction. The end face 117 of the first moving body 101 and the end face 127 of the second moving body 102 face each other with a gap between them. The end face 127 is provided with a recess 128. The recess 128 is a substantially circular hole with a bottom that is recessed from the end face 127 in the -Y direction.

The wedge 121 is further provided with a guide groove 129. The guide groove 129 is an example of a second guide groove. The guide groove 129 opens to the upper slope 126 and extends along the upper slope 126 in approximately the Y direction. The approximately Y direction is a direction that is inclined obliquely along the upper slope 126 with respect to the inner surface 33a of the rail 15.

The guide groove 129 is spaced apart from the end 126a of the upper slope 126 in the +Y direction. Furthermore, the guide groove 129 is spaced apart from the recess 128. Note that the recess 128 and the guide groove 129 may be connected to each other.

The guide 122 protrudes from the lower slope 125 in the -Z direction. The guide 122 extends along the lower slope 125. The guide 122 is shorter than the lower slope 125. The guide 122 is spaced apart from the end 125a of the lower slope 125 in the -Y direction.

The guide 122 is fitted into the guide groove 95 of the support frame 81. In other words, the guide 122 is disposed inside the guide groove 95. The guide 122 restricts the second moving body 102 from moving in the X direction relative to the support frame 81. As described above, the second moving body 102 is attached to the casing 70 so as to be movable along the inclined surface 92 and the guide groove 95.

The first elastic member 103 is, for example, a compression coil spring. However, the first elastic member 103 may be another elastic body. The first elastic member 103 extends in the Y direction. The first elastic member 103 has an end 103a in the +Y direction and an end 103b in the -Y direction.

End 103a is accommodated in recess 118 of first moving body 101 and is supported on the bottom of recess 118. End 103b is accommodated in recess 128 of second moving body 102 and is supported on the bottom of recess 128.

By fitting into the recesses 118 and 128, the first elastic member 103 is connected to the first moving body 101 and the second moving body 102. Note that this is not limited to the example, and the first elastic member 103 may be attached to, for example, protrusions facing each other provided on the end faces 117 and 127.

The second pressing unit 72 has a third moving body 131, a fourth moving body 132, and a second elastic member 133. The second pressing unit 72 is not limited to this example and may have other members.

The third moving body 131 has a wedge 141 and a guide 142. The guide 142 is an example of a first guide. The wedge 141 has a lower slope 145, an abutment surface 146, and an end surface 147. The abutment surface 146 is an example of a first abutment surface.

The lower slope 145 of the third moving body 131 faces the upper slope 116 of the first moving body 101 and is supported by the upper slope 116. The lower slope 145 extends along the upper slope 116 and is shorter than the upper slope 116.

The lower slope 145 is inclined obliquely with respect to the inner surface 33a so that the end 145a in the -Y direction is closer to the inner surface 33a than the end 145b in the +Y direction. The lower slope 145 extends in a substantially straight line between the end 145a and the end 145b. Note that the lower slope 145 is not limited to this example, and may be a curved surface or may have irregularities.

The abutment surface 146 is located on the opposite side of the lower slope 145. The abutment surface 146 faces the inner surface 33a of the rail 15. The abutment surface 146 is a plane that is approximately parallel to the inner surface 33a and extends approximately in the Y direction along the inner surface 33a. Therefore, the lower slope 145 and the abutment surface 146 taper in the -Y direction. The abutment surface 146 abuts against the inner surface 33a. The abutment surface 146 may be temporarily separated from the inner surface 33a. In addition, another member may be interposed between the abutment surface 146 and the inner surface 33a.

End surface 147 is provided at the end of wedge 141 in the -Y direction. End surface 147 faces the -Y direction. An attachment portion 148 is provided on end surface 147. Attachment portion 148 is, for example, a loop (ring) protruding from end surface 147.

The guide 142 protrudes from the lower slope 145 in the -Z direction. The guide 142 is shorter than the lower slope 145. The guide 142 is spaced apart from the end 145a of the lower slope 145 in the -Y direction. The distance between the guide 142 and the end 145a is longer than the distance between the guide 142 and the end 145b.

The guide 142 is fitted into the guide groove 119 of the first moving body 101. In other words, the guide 142 is disposed inside the guide groove 119. The guide 142 restricts the movement of the third moving body 131 in the X direction relative to the first moving body 101. As described above, the third moving body 131 is attached to the first moving body 101 so as to be movable along the upper slope 116 and the guide groove 119.

The fourth moving body 132 has a wedge 151 and a guide 152. The guide 152 is an example of a second guide. The wedge 151 has a lower slope 155, an abutment surface 156, and an end surface 157. The abutment surface 156 is an example of a second abutment surface.

The lower slope 155 of the fourth moving body 132 faces the upper slope 126 of the second moving body 102 and is supported by the upper slope 126. The lower slope 155 extends along the upper slope 126 and is shorter than the upper slope 126.

The lower slope 155 is inclined obliquely with respect to the inner surface 33a so that the end 155a in the +Y direction is closer to the inner surface 33a than the end 155b in the -Y direction. The lower slope 155 extends in a substantially straight line between the end 155a and the end 155b. Note that the lower slope 155 is not limited to this example, and may be a curved surface or may have irregularities.

The abutment surface 156 is located on the opposite side of the lower slope 155. The abutment surface 156 faces the inner surface 33a of the rail 15. The abutment surface 156 is a plane that is approximately parallel to the inner surface 33a and extends approximately in the Y direction along the inner surface 33a. Therefore, the lower slope 155 and the abutment surface 156 taper in the +Y direction. The abutment surface 156 abuts against the inner surface 33a. The abutment surface 156 may be temporarily separated from the inner surface 33a. In addition, another member may be interposed between the abutment surface 156 and the inner surface 33a.

The end surface 157 is provided at the end of the wedge 151 in the +Y direction. The end surface 157 faces the +Y direction. The end surface 147 of the third moving body 131 and the end surface 157 of the fourth moving body 132 face each other with a gap between them. The end surface 157 is provided with an attachment portion 158. The attachment portion 158 is, for example, a loop protruding from the end surface 157.

The guide 152 protrudes from the lower slope 155 in the -Z direction. The guide 152 is shorter than the lower slope 155. The guide 152 is spaced apart from the end 155a of the lower slope 155 in the +Y direction. The distance between the guide 152 and the end 155a is longer than the distance between the guide 152 and the end 155b.

The guide 152 is fitted into the guide groove 129 of the second moving body 102. In other words, the guide 152 is disposed inside the guide groove 129. The guide 152 restricts the movement of the fourth moving body 132 in the X direction relative to the second moving body 102. As described above, the fourth moving body 132 is attached to the second moving body 102 so as to be movable along the upper slope 126 and the guide groove 129.

The second elastic member 133 is, for example, a tension coil spring. Note that the second elastic member 133 may be another elastic body. The second elastic member 133 extends in the Y direction. The second elastic member 133 has two hooks 133a and 133b.

The hook 133a is provided at the end of the second elastic member 133 in the +Y direction. The hook 133a is attached to the mounting portion 148 of the third moving body 131. The hook 133b is provided at the end of the second elastic member 133 in the -Y direction. The hook 133b is attached to the mounting portion 158 of the fourth moving body 132.

By being attached to the mounting portions 148 and 158, the second elastic member 133 is connected to the third moving body 131 and the fourth moving body 132. Note that this is not limited to this example, and the second elastic member 133 may be connected to the third moving body 131 and the fourth moving body 132 by other means.

The third moving body 131 and the fourth moving body 132 are made of, for example, metal. This prevents the mounting parts 148, 158, which are pulled by the second elastic member 133, from being damaged. The third moving body 131 and the fourth moving body 132 may be made of other materials.

In this embodiment, the masses of the third moving body 131 and the fourth moving body 132 are smaller than the masses of the first moving body 101 and the second moving body 102. Therefore, the spring constant of the second elastic member 133 is smaller than the spring constant of the first elastic member 103. Note that the spring constants of the first elastic member 103 and the second elastic member 133 are not limited to this example.

The wedge 111 of the first moving body 101 is disposed between the lower slope 145 of the third moving body 131 and the slope 91 of the casing 70. The space between the lower slope 145 and the slope 91 narrows as it moves away from the second moving body 102. The wedge 111 also tapers as it moves away from the second moving body 102.

The wedge 121 of the second moving body 102 is disposed between the lower slope 155 of the fourth moving body 132 and the slope 92 of the casing 70. The space between the lower slope 155 and the slope 92 narrows as it moves away from the first moving body 101. The wedge 121 also tapers as it moves away from the first moving body 101.

The lower slope 145 of the third moving body 131 is inclined, for example, at about 5° with respect to the inner surface 33a. On the other hand, the lower slope 155 of the fourth moving body 132 is inclined, for example, at about -5° with respect to the inner surface 33a. In other words, the lower slope 155 is inclined with respect to the inner surface 33a in the opposite direction to the lower slope 145. Note that in this embodiment, the lower slopes 145, 155 are inclined by the same angle (number) in opposite directions with respect to the inner surface 33a, but this is not limited to this example, and for example, the lower slope 145 may be inclined more than the lower slope 155.

The wedge 141 of the third moving body 131 is disposed between the upper slope 116 of the first moving body 101 and the inner surface 33a of the rail 15. The space between the upper slope 116 and the inner surface 33a narrows as it approaches the fourth moving body 132. The wedge 141 also tapers toward the fourth moving body 132.

The wedge 151 of the fourth moving body 132 is disposed between the upper slope 126 of the second moving body 102 and the inner surface 33a of the rail 15. The space between the upper slope 126 and the inner surface 33a narrows as it approaches the third moving body 131. The wedge 151 also tapers toward the third moving body 131.

The upper slope 116 of the first moving body 101 is inclined, for example, at about 5° with respect to the inner surface 33a. On the other hand, the upper slope 126 of the second moving body 102 is inclined, for example, at about -5° with respect to the inner surface 33a. In other words, the upper slope 116 is inclined with respect to the inner surface 33a in the opposite direction to the upper slope 126. Note that in this embodiment, the upper slopes 116, 126 are inclined by the same angle (number) in opposite directions with respect to the inner surface 33a, but this is not limited to this example, and for example, the upper slope 126 may be inclined more than the upper slope 116.

In the Y direction, the first pressing unit 71 and the second pressing unit 72 are housed between the two holding frames 82 of the casing 70. The guide grooves 95 of the casing 70 hold the guides 112, 122 of the first moving body 101 and the second moving body 102. Furthermore, the guide grooves 119, 129 of the first moving body 101 and the second moving body 102 hold the guides 142, 152 of the third moving body 131 and the fourth moving body 132. In this way, the first pressing unit 71 and the second pressing unit 72 are housed in and held by the casing 70. This allows the shock absorber 25 to be treated as a single assembly part (sub-assembly).

The first elastic member 103 pushes (biases) the first moving body 101 and the second moving body 102 in a direction separating them from each other. In this embodiment, the first elastic member 103 biases the first moving body 101 in the +Y direction and biases the second moving body 102 in the -Y direction.

The first elastic member 103 biases the wedge 111 of the first moving body 101 along the slope 91 in a direction approaching the inner surface 33a of the rail 15. As the wedge 111 approaches the inner surface 33a, the upper slope 116 of the wedge 111 also approaches the inner surface 33a. In other words, the first elastic member 103 biases the first moving body 101 so that the upper slope 116 approaches the inner surface 33a. Furthermore, the wedge 111 approaching the inner surface 33a pushes the third moving body 131 toward the inner surface 33a.

The first elastic member 103 biases the wedge 121 of the second moving body 102 in a direction along the slope 92 toward the inner surface 33a. As the wedge 121 approaches the inner surface 33a, the upper slope 126 of the wedge 121 also approaches the inner surface 33a. In other words, the first elastic member 103 biases the second moving body 102 so that the upper slope 126 approaches the inner surface 33a. Furthermore, the wedge 121 approaching the inner surface 33a pushes the fourth moving body 132 toward the inner surface 33a.

The second elastic member 133 pulls (biases) the third moving body 131 and the fourth moving body 132 in a direction to approach each other. In this embodiment, the second elastic member 133 biases the third moving body 131 in the -Y direction and biases the fourth moving body 132 in the +Y direction.

The second elastic member 133 biases the wedge 141 of the third moving body 131 in a direction toward the inner surface 33a of the rail 15 along the upper slope 116 of the first moving body 101. By being biased by the second elastic member 133, the wedge 141 approaches the inner surface 33a and presses the abutment surface 146 against the inner surface 33a.

The second elastic member 133 biases the wedge 141 of the fourth moving body 132 in a direction approaching the inner surface 33a along the upper slope 126 of the second moving body 102. By being biased by the second elastic member 133, the wedge 141 approaches the inner surface 33a and presses the abutment surface 156 against the inner surface 33a.

The third moving body 131 is pushed by the first moving body 101 biased by the first elastic member 103, and is biased by the second elastic member 133, thereby pushing the inner surface 33a of the rail 15. Furthermore, the fourth moving body 132 is pushed by the second moving body 102 biased by the first elastic member 103, and is biased by the second elastic member 133, thereby pushing the inner surface 33a. As a result, the third moving body 131 and the fourth moving body 132 apply a load to the inner surface 33a.

For example, the slider 16 may move in the -Z direction relative to the rail 15 due to vibration, causing the casing 70 to move away from the inner surface 33a. In this case, the first moving body 101 biased by the first elastic member 103 slides on the inclined surface 91 and the lower inclined surface 145, moving away from the second moving body 102. Also, the second moving body 102 biased by the first elastic member 103 slides on the inclined surface 92 and the lower inclined surface 155, moving away from the first moving body 101.

The first moving body 101 moves to a narrower portion of the space between the support frame 81 and the wedge 141 of the third moving body 131. As a result, the first moving body 101 presses the third moving body 131 against the inner surface 33a, and keeps the abutment surface 146 in abutment against the inner surface 33a.

Similarly, the second moving body 102 moves to a narrower portion of the space between the support frame 81 and the wedge 151 of the fourth moving body 132. This causes the second moving body 102 to press the fourth moving body 132 against the inner surface 33a, and keeps the abutment surface 156 in abutment against the inner surface 33a.

The third moving body 131, which is biased by the second elastic member 133, slides on the upper inclined surface 116 and approaches the fourth moving body 132. The fourth moving body 132, which is biased by the second elastic member 133, slides on the upper inclined surface 126 and approaches the third moving body 131.

The third moving body 131 moves to a narrower portion of the space between the inner surface 33a of the rail 15 and the wedge 111 of the first moving body 101. This causes the third moving body 131 to press the abutment surface 146 against the inner surface 33a, and keeps the abutment surface 146 in abutment against the inner surface 33a.

Similarly, the fourth moving body 132 moves to a narrower portion of the space between the inner surface 33a of the rail 15 and the wedge 121 of the second moving body 102. This causes the fourth moving body 132 to press the abutment surface 156 against the inner surface 33a, and keeps the abutment surface 156 in abutment against the inner surface 33a.

Either the first moving body 101 or the third moving body 131 may be stopped. Also, either the second moving body 102 or the fourth moving body 132 may be stopped. In other words, at least one of the set of the first moving body 101 and the second moving body 102 and the set of the third moving body 131 and the fourth moving body 132 moves and keeps the abutment surfaces 146, 156 in abutment against the inner surface 33a.

As a result, even if the distance between the casing 70 and the inner surface 33a in the Z direction changes, the shock absorber 25 keeps the third moving body 131 and the fourth moving body 132 in contact with the inner surface 33a. This allows the shock absorber 25 to prevent a gap from occurring between the shock absorber 25 and the inner surface 33a.

The Young's modulus of the first elastic member 103 and the second elastic member 133 is set to be relatively low. This allows the first moving body 101, the second moving body 102, the third moving body 131, and the fourth moving body 132 to move smoothly in response to changes in the distance between the casing 70 and the inner surface 33a in the Z direction when the slider 16 slides in the Y direction.

In the internal space 37 of the lower rail 21, the upper rail 22 and the attachment 23 are supported on the bottom wall 31 via rollers 24. The upper rail 22 and the attachment 23 are also supported on the inner surface 23a of the connecting wall 33 via a shock absorber 25. This prevents the slider 16 from rattling (vibrating) in the Z direction relative to the rail 15.

In the slide rail device 11 according to the first embodiment described above, the casing 70 has an upper surface 85 facing the inner surface 33a of the rail 15 and is attached to the slider 16. The first pressing unit 71 has upper inclined surfaces 116, 126, a first moving body 101, a second moving body 102, and a first elastic member 103. The upper inclined surfaces 116, 126 face the inner surface 33a and are inclined at different angles relative to the inner surface 33a. The first moving body 101 and the second moving body 102 are supported on the upper surface 85. The first elastic member 103 is connected to the first moving body 101 and the second moving body 102 and biases the first moving body 101 and the second moving body 102 so that the upper inclined surfaces 116, 126 approach the inner surface 33a. The second pressing unit 72 has a third moving body 131, a fourth moving body 132, and a second elastic member 133. The third moving body 131 is supported on the upper slope 116. The fourth moving body 132 is supported on the upper slope 126. The second elastic member 133 is connected to the third moving body 131 and the fourth moving body 132, and urges the third moving body 131 in a direction approaching the inner surface 33a along the upper slope 116, and urges the fourth moving body 132 in a direction approaching the inner surface 33a along the upper slope 126. The third moving body 131 and the fourth moving body 132 urged by the second elastic member press the inner surface 33a. That is, the third moving body 131 and the fourth moving body 132 are brought closer to the inner surface 33a together with the upper slopes 116 and 126 by the first elastic member 103, and are also brought closer to the inner surface 33a by the second elastic member 133, pushing against the inner surface 33a.

With the above configuration, the second pressing unit 72, together with the first pressing unit 71, presses the inner surface 33a of the rail 15, and can suppress rattling (vibration) of the slider 16 relative to the rail 15. Furthermore, the upper slopes 116, 126, the third moving body 131, and the fourth moving body 132 are moved by the first elastic member 103 and the second elastic member 133. Therefore, when the upper slopes 116, 126, the third moving body 131, and the fourth moving body 132 move in the Y direction, the distance that the third moving body 131 and the fourth moving body 132 move in the Z direction becomes large. In other words, the third moving body 131 and the fourth moving body 132 can abut against the inner surface 33a even if the movable range in the Y direction is set to be narrow, and even if a large gap occurs between the inner surface 33a and the third moving body 131 and the fourth moving body 132 in the Z direction. Therefore, the casing 70, the first pressing unit 71, and the second pressing unit 72, which suppress rattle, can be prevented from becoming large in the Y direction.

In addition, the first moving body 101 and the second moving body 102 are biased by the first elastic member 103, and the third moving body 131 and the fourth moving body 132 are biased by the second elastic member 133. As a result, even if the shapes of the first moving body 101, the second moving body 102, the third moving body 131, and the fourth moving body 132 vary, the first elastic member 103 and the second elastic member 133 can appropriately adjust the positions of the first moving body 101, the second moving body 102, the third moving body 131, and the fourth moving body 132 by elastic force. In addition, the first moving body 101 and the second moving body 102 are supported on the upper surface 85 provided on one casing 70, and the third moving body 131 and the fourth moving body 132 are supported on the upper slope 116 and the upper slope 126 of the first pressing unit 71. That is, the first pressing unit 71 and the second pressing unit 72 are arranged inside or on one casing 70. Therefore, the casing 70, the first pressing unit 71, and the second pressing unit 72 can be attached to the slider 16 in a state where they are pre-assembled with each other, which makes it easy to assemble the slide rail device 11. In addition, since the first elastic member 103 and the second elastic member 133 do not need to be extended outside the casing 70, interference with other parts such as a mechanism for locking the slider 16 to the rail 15 can be suppressed.

The upper surface 85 has inclined surfaces 91 and 92. The inclined surface 91 supports the first moving body 101 and is inclined obliquely with respect to the inner surface 33a. The inclined surface 92 supports the second moving body 102 and is inclined obliquely with respect to the inner surface 33a at an angle different from that of the inclined surface 91. The upper inclined surface 116 is provided on the first moving body 101. The upper inclined surface 126 is provided on the second moving body 102. The first elastic member 103 urges the first moving body 101 in a direction approaching the inner surface 33a along the inclined surface 91, and urges the second moving body 102 in a direction approaching the inner surface 33a along the inclined surface 92. As a result, the upper inclined surfaces 116 and 126 can be urged in a direction approaching the inner surface 33a by the casing 70, the first moving body 101, the second moving body 102, and the first elastic member 103. Therefore, the first pressing unit 71 does not require any other parts, which helps prevent an increase in the number of parts.

The first moving body 101, which is one of the first moving body 101 and the third moving body 131, is provided with a guide groove 119. The other of the first moving body 101 and the third moving body 131, the third moving body 131, has a guide 142 arranged inside the guide groove 119. The second moving body 102, which is one of the second moving body 102 and the fourth moving body 132, is provided with a guide groove 129. The other of the second moving body 102 and the fourth moving body 132, the fourth moving body 132, has a guide 152 arranged inside the guide groove 129. This makes it possible to prevent the first moving body 101 and the third moving body 131 from coming off from each other. Furthermore, it is possible to prevent the second moving body 102 and the fourth moving body 132 from coming off from each other.

The first moving body 101 is provided with a guide groove 119 that opens into the upper slope 116 and extends along the upper slope 116. The second moving body 102 is provided with a guide groove 129 that opens into the upper slope 126 and extends along the upper slope 126. The third moving body 131 has a guide 142 disposed inside the guide groove 119 and is movable along the guide groove 119. The fourth moving body 132 has a guide 152 disposed inside the guide groove 129 and is movable along the guide groove 129. This makes it possible for the third moving body 131 and the fourth moving body 132 to be prevented from falling off the upper slopes 116 and 126 and to move smoothly along the upper slopes 116 and 126.

The casing 70 is provided with a guide groove 95 that opens to the top surface 85 and extends in a direction in which the slider 16 can move. The first moving body 101 has a guide 112 disposed inside the guide groove 95 and is movable along the guide groove 95. The second moving body 102 has a guide 122 disposed inside the guide groove 95 and is movable along the guide groove 95. This prevents the first moving body 101 and the second moving body 102 from falling off the top surface 85 and allows them to move smoothly along the top surface 85.

The third moving body 131 has an abutment surface 146 that extends along the inner surface 33a and abuts against the inner surface 33a, and is biased by the second elastic member 133 to press the abutment surface 146 against the inner surface 33a. The fourth moving body 132 has an abutment surface 156 that extends along the inner surface 33a and abuts against the inner surface 33a, and is biased by the second elastic member 133 to press the abutment surface 156 against the inner surface 33a. That is, the second pressing unit 72 presses the abutment surfaces 146, 156, which are approximately parallel to the inner surface 33a, against the inner surface 33a. This makes it possible to suppress rattling of the second pressing unit 72 against the rail 15. Furthermore, because the third moving body 131 and the fourth moving body 132 directly contact the inner surface 33a, there is no need for any intervening members between the third moving body 131 and the fourth moving body 132 and the inner surface 33a. Therefore, the second pressing unit 72 can suppress an increase in the number of parts.

In the first embodiment described above, the first moving body 101 and the second moving body 102 are provided with guide grooves 119, 129, and the third moving body 131 and the fourth moving body 132 have guides 142, 152. However, conversely, the third moving body 131 and the fourth moving body 132 may be provided with guide grooves, and the first moving body 101 and the second moving body 102 may have guides disposed inside the guide grooves. That is, one of the first moving body 101 and the third moving body 131 is provided with a guide groove, and the other has a guide. Furthermore, one of the second moving body 102 and the fourth moving body 132 is provided with a guide groove, and the other has a guide.

Second Embodiment
The second embodiment will be described below with reference to Fig. 7. In the following description of the embodiment, components having the same functions as components already described are given the same reference numerals as the components already described, and further description may be omitted. In addition, multiple components given the same reference numerals do not necessarily have all the same functions and properties, and may have different functions and properties according to each embodiment.

Figure 7 is a cross-sectional view showing a portion of the lower rail 21 and upper rail 22 and the shock absorber 25 according to the second embodiment. As shown in Figure 7, the upper surface 85 of the casing 70 in the second embodiment has two support surfaces 201, 202 instead of the inclined surfaces 91, 92.

The support surfaces 201 and 202 are formed substantially flat and face the +Z direction. The support surfaces 201 and 202 face the inner surface 33a of the rail 15 via a gap. The support surfaces 201 and 202 are continuous with the intermediate surface 93. The intermediate surface 93 is located between the two support surfaces 201 and 202.

Two guide grooves 205 are further provided in the support frame 81. The guide groove 205 is an example of a third guide groove. The guide groove 205, for example, penetrates the support frame 81 in the Z direction and extends in the Y direction. One guide groove 205 opens into the support surface 201. The other guide groove 205 opens into the support surface 202.

The first pressing unit 71 of the second embodiment has a first moving body 211, a second moving body 212, a first elastic member 213, and a block 214, instead of the first moving body 101, the second moving body 102, and the first elastic member 103. The first pressing unit 71 is not limited to this example, and may have other members. The first moving body 211 and the second moving body 212 are made of, for example, metal.

The first moving body 211 has a wedge 221 and two guides 222 and 223. The guide 222 is an example of a third guide. The wedge 221 has a lower surface 225, an upper slope 226, and an end surface 227.

The lower surface 225 faces the support surface 201 and is supported by the support surface 201. The lower surface 225 extends along the support surface 201 and is shorter than the support surface 201. The lower surface 225 is a plane that is approximately parallel to the support surface 201 and the inner surface 33a of the rail 15.

The upper slope 226 faces the inner surface 33a of the rail 15. The upper slope 226 is inclined obliquely with respect to the inner surface 33a so that the end 226a in the +Y direction is closer to the inner surface 33a than the end 226b in the -Y direction.

End surface 227 is provided at the end of wedge 221 in the -Y direction. End surface 227 faces the -Y direction. An attachment portion 228 is provided on end surface 227. Attachment portion 228 is, for example, a loop protruding from end surface 227.

The guide 222 protrudes in the -Z direction from the lower surface 225. The guide 222 is shorter than the lower surface 225. The guide 222 is disposed inside the guide groove 205. This allows the first moving body 211 to be attached to the casing 70 so as to be movable along the support surface 201 and the guide groove 205. The guide 223 protrudes in the +Z direction from the upper slope 226.

The second moving body 212 has a wedge 231 and two guides 232 and 233. The guide 232 is an example of a fourth guide. The wedge 231 has a lower surface 235, an upper slope 236, and an end surface 237.

The lower surface 235 faces the support surface 202 and is supported by the support surface 202. The lower surface 235 extends along the support surface 202 and is shorter than the support surface 202. The lower surface 235 is a plane that is approximately parallel to the support surface 202 and the inner surface 33a of the rail 15.

The upper slope 236 faces the inner surface 33a of the rail 15. The upper slope 236 is inclined obliquely with respect to the inner surface 33a so that the end 236a in the +- direction is closer to the inner surface 33a than the end 236b in the +Y direction.

The end surface 237 is provided at the end of the wedge 231 in the +Y direction. The end surface 237 faces the +Y direction. The end surface 227 of the first moving body 211 and the end surface 237 of the second moving body 212 face each other with a gap between them. The end surface 237 is provided with an attachment portion 238. The attachment portion 238 is, for example, a loop protruding from the end surface 237.

The guide 232 protrudes in the -Z direction from the lower surface 235. The guide 232 is shorter than the lower surface 235. The guide 232 is disposed inside the guide groove 205. This allows the second moving body 212 to be attached to the casing 70 so as to be movable along the support surface 202 and the guide groove 205. The guide 233 protrudes in the +Z direction from the upper inclined surface 236.

The first elastic member 213 is, for example, a tension coil spring. Note that the first elastic member 213 may be another elastic body. The first elastic member 213 extends in the Y direction. The first elastic member 213 has two hooks 213a and 213b.

Hooks 213a and 213b are provided on both ends of the first elastic member 213 in the Y direction. Hook 213a is attached to the attachment portion 228 of the first moving body 211. Hook 213b is attached to the attachment portion 238 of the second moving body 212. By being attached to the attachment portions 228 and 238, the first elastic member 213 is connected to the first moving body 211 and the second moving body 212.

The block 214 has two lower slopes 241, 242 and two upper slopes 243, 244. The upper slope 243 is an example of a first slope. The upper slope 244 is an example of a second slope.

The lower slopes 241, 242 face the upper surface 85 of the casing 70 with a gap therebetween. The lower slope 241 faces the upper slope 226 of the first moving body 211 and is supported by the upper slope 226. The lower slope 242 faces the upper slope 236 of the second moving body 212 and is supported by the upper slope 236. The lower slopes 241, 242 are inclined at different angles to the inner surface 33a. The lower slopes 241, 242 taper toward the upper surface 85.

The upper slopes 243, 244 face the inner surface 33a of the rail 15 with a gap therebetween. The upper slope 243 faces the lower slope 145 of the third moving body 131 and supports the lower slope 145. The upper slope 243 is inclined obliquely with respect to the inner surface 33a. The upper slope 244 faces the lower slope 155 of the fourth moving body 132 and supports the lower slope 155. The upper slope 244 is inclined obliquely with respect to the inner surface 33a at an angle different from that of the upper slope 243. The upper slopes 243, 244 taper toward the inner surface 33a.

Four guide grooves 245, 246, 247, and 248 are provided on the block 214. Guide groove 245 opens into the lower slope 241 and extends along the lower slope 241. Guide groove 246 opens into the lower slope 242 and extends along the lower slope 242. Guide groove 247 opens into the upper slope 243 and extends along the upper slope 243. Guide groove 248 opens into the upper slope 244 and extends along the upper slope 244.

The guide 223 of the first moving body 211 is disposed inside the guide groove 245. This allows the block 214 to move along the upper slope 226. The guide 233 of the second moving body 212 is disposed inside the guide groove 246. This allows the block 214 to move along the upper slope 236.

The guide 142 of the third moving body 131 is disposed inside the guide groove 247. This allows the third moving body 131 to move along the upper slope 243 and the guide groove 247.

The guide 152 of the fourth moving body 132 is disposed inside the guide groove 248. This allows the fourth moving body 132 to move along the upper slope 244 and the guide groove 248.

In the above-described shock absorbing device 25, the first elastic member 213 pulls (biases) the first moving body 211 and the second moving body 212 in a direction in which they approach each other. In this embodiment, the first elastic member 213 biases the first moving body 211 in the -Y direction and biases the second moving body 212 in the +Y direction.

The wedge 221 of the first moving body 211, biased by the first elastic member 213, moves to a narrower portion of the space between the support surface 201 of the casing 70 and the lower slope 241 of the block 214. As a result, the upper slope 226 of the wedge 221 biases the block 214 in a direction approaching the inner surface 33a of the rail 15. By being biased by the first moving body 211, the upper slopes 243, 244 of the block 214 approach the inner surface 33a.

The wedge 231 of the second moving body 212, biased by the first elastic member 213, moves to a narrower portion of the space between the support surface 202 of the casing 70 and the lower slope 242 of the block 214. As a result, the upper slope 236 of the wedge 231 biases the block 214 in a direction approaching the inner surface 33a of the rail 15. By being biased by the second moving body 212, the upper slopes 243, 244 of the block 214 approach the inner surface 33a.

As described above, the first elastic member 213 moves the first moving body 211 and the second moving body 212, so that the block 214 slides on the upper inclined surfaces 226, 236 and approaches the inner surface 33a. In other words, the first elastic member 213 biases the first moving body 211 and the second moving body 212 so that the upper inclined surfaces 243, 244 of the block 214 approach the inner surface 33a.

The second elastic member 133 biases the wedge 141 of the third moving body 131 in a direction toward the inner surface 33a of the rail 15 along the upper slope 243 of the block 214. By being biased by the second elastic member 133, the wedge 141 approaches the inner surface 33a and presses the abutment surface 146 against the inner surface 33a.

The second elastic member 133 biases the wedge 141 of the fourth moving body 132 in a direction toward the inner surface 33a along the upper slope 244 of the block 214. By being biased by the second elastic member 133, the wedge 141 approaches the inner surface 33a and presses the abutment surface 156 against the inner surface 33a.

The third moving body 131 is pushed by the first moving body 211 and the block 214, which are biased by the first elastic member 213, and is biased by the second elastic member 133, thereby pushing the inner surface 33a of the rail 15. Furthermore, the fourth moving body 132 is pushed by the second moving body 212 and the block 214, which are biased by the first elastic member 213, and is biased by the second elastic member 133, thereby pushing the inner surface 33a.

As a result, even if the distance between the casing 70 and the inner surface 33a in the Z direction changes, the shock absorber 25 keeps the third moving body 131 and the fourth moving body 132 in contact with the inner surface 33a. This allows the shock absorber 25 to suppress rattling (vibration) of the slider 16 relative to the rail 15.

As in the slide rail device 11 of the second embodiment described above, the first pressing unit 71 may have other members such as the block 214 in addition to the first moving body 211, the second moving body 212, and the first elastic member 213. Furthermore, the inclined surfaces supporting the third moving body 131 and the fourth moving body 132 may be provided not only on the first moving body 101 and the second moving body 102 of the first embodiment, but also on members such as the block 214 of the second embodiment. Furthermore, the upper surface 85 of the casing 70 may be approximately parallel to the inner surface 33a of the rail 15.

In the second embodiment, the first moving body 211, the block 214, and the third moving body 131 are stacked in the Z direction. The second moving body 212, the block 214, and the fourth moving body 132 are stacked in the Z direction. The larger the number of members stacked in the Z direction, the smaller the casing 70, the first pressing unit 71, and the second pressing unit 72 can be prevented from becoming large in the Y direction.

In the embodiment described above, the third moving body 131 and the fourth moving body 132 directly push the inner surface 33a of the rail 15. However, the third moving body 131 and the fourth moving body 132 may indirectly push the inner surface 33a via another member.

In the embodiment described above, the first elastic member 103 pushes the first moving body 101 and the second moving body 102 in a direction away from each other. Furthermore, the second elastic member 133 pulls the third moving body 131 and the fourth moving body 132 in a direction toward each other. However, the biasing direction of the first elastic member 103 and the second elastic member 133 is not limited to this example.

In the above explanation, suppression is defined as, for example, preventing the occurrence of an event, action, or influence, or reducing the degree of an event, action, or influence. In the above explanation, restriction is defined as, for example, preventing movement or rotation, or allowing movement or rotation within a specified range and preventing movement or rotation beyond the specified range.

Although the above describes the embodiments of the present invention, the above embodiments and variations are merely examples and are not intended to limit the scope of the invention. The above embodiments and variations can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the spirit of the invention. In addition, the configurations and shapes of each embodiment and variation can be partially interchanged.

1...vehicle, 11...slide rail device, 15...rail, 16...slider, 33a...inner surface, 70...casing, 71...first pressing unit, 72...second pressing unit, 85...upper surface, 91...inclined surface, 92...inclined surface, 95...guide groove, 101...first moving body, 102...second moving body, 103...first elastic member, 112, 122...guide, 11 6, 126...upper inclined surface, 119, 129...guide groove, 131...third moving body, 132...fourth moving body, 133...second elastic member, 142, 152...guide, 146, 156...contact surface, 205...guide groove, 211...first moving body, 212...second moving body, 213...first elastic member, 222, 232...guide, 243, 244...upper inclined surface.

Claims (6)

a rail having an inner surface;
a slider attached to the rail so as to be movable along the rail;
a casing having a support surface facing the inner surface and attached to the slider;
a first pressing unit including: a first moving body having a first inclined surface facing the inner surface and inclined obliquely with respect to the inner surface and supported on the support surface; a second moving body having a second inclined surface facing the inner surface and inclined obliquely with respect to the inner surface at an angle different from that of the first inclined surface and supported on the support surface; and a first elastic member connected to the first moving body and the second moving body and biasing the first moving body and the second moving body so that the first inclined surface and the second inclined surface approach the inner surface;
a second pressing unit including a third moving body supported on the first inclined surface, a fourth moving body supported on the second inclined surface, and a second elastic member connected to the third moving body and the fourth moving body and biasing the third moving body in a direction approaching the inner surface along the first inclined surface and biasing the fourth moving body in a direction approaching the inner surface along the second inclined surface, wherein the third moving body and the fourth moving body biased by the second elastic member press the inner surface;
A slide rail device for a vehicle comprising: the support surface has a third inclined surface that supports the first moving body and is inclined obliquely with respect to the inner surface, and a fourth inclined surface that supports the second moving body and is inclined obliquely with respect to the inner surface at an angle different from that of the third inclined surface,
the first elastic member urges the first moving body in a direction approaching the inner surface along the third inclined surface, and urges the second moving body in a direction approaching the inner surface along the fourth inclined surface;
2. The vehicle slide rail device according to claim 1. a rail having an inner surface;
a slider attached to the rail so as to be movable along the rail;
a casing having a support surface facing the inner surface and attached to the slider;
A first pressing unit;
A second pressing unit;
Equipped with
The first pressing unit includes:
A first moving body supported on the support surface;
A second moving body supported on the support surface;
a block having a first inclined surface facing the inner surface and inclined obliquely with respect to the inner surface, and a second inclined surface facing the inner surface and inclined obliquely with respect to the inner surface at an angle different from that of the first inclined surface, the block being supported by the first and second movable bodies;
a first elastic member connected to the first moving body and the second moving body and biasing the first moving body and the second moving body so that the first moving body and the second moving body approach each other;
having
The second pressing unit includes:
a third moving body supported on the first inclined surface; and
a fourth moving body supported on the second inclined surface; and
a second elastic member connected to the third moving body and the fourth moving body, for urging the third moving body in a direction approaching the inner surface along the first inclined surface and for urging the fourth moving body in a direction approaching the inner surface along the second inclined surface;
the third moving body and the fourth moving body biased by the second elastic member press the inner surface .
A slide rail device for vehicles . a first guide groove is provided in one of the first moving body and the third moving body;
the other of the first movable body and the third movable body has a first guide disposed inside the first guide groove,
a second guide groove is provided in one of the second moving body and the fourth moving body;
the other of the second movable body and the fourth movable body has a second guide disposed inside the second guide groove;
4. The vehicle slide rail device according to claim 1. a third guide groove is provided in the casing, the third guide groove being open to the support surface and extending in a direction in which the slider is movable;
the first movable body has a third guide disposed inside the third guide groove and is movable along the third guide groove;
the second movable body has a fourth guide disposed inside the third guide groove and is movable along the third guide groove;
5. The vehicle slide rail device according to claim 1. the third movable body has a first abutment surface extending along the inner surface and abutting against the inner surface, and is biased by the second elastic member to press the first abutment surface against the inner surface;
the fourth movable body has a second abutment surface extending along the inner surface and abutting against the inner surface, and is biased by the second elastic member to press the second abutment surface against the inner surface;
6. A slide rail device for a vehicle according to claim 1.

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