Vehicular seat structure

Abstract

To provide a vehicular seat structure capable of preventing an operation cover from rattling with respect to a position adjustment mechanism.SOLUTION: A vehicular seat structure 100 includes a reclining mechanism 110 that has a turning shaft portion 146 for turnably supporting an engaging portion 142 engaging with an operation cover 118 around a turning shaft α. The engaging portion has: an axial protruding portion 154 that protrudes from the turning shaft portion in a turning shaft direction; and an intersecting protruding portion 156 that protrudes from the axial protruding portion in an intersecting direction. The operation cover has: a first wall portion 162 and a second wall portion 164 that are erected from a main body 120 and face each other across the engaging portion; a first abutting portion 176 that is formed on the first wall portion and abuts against the intersecting protruding portion of the engaging portion; a second abutting portion 178 that is formed on the first wall portion and abuts against a distal end 154a of the axial protruding portion; and a third abutting portion 186 that is formed on the second wall portion, is offset from the first abutting portion, and abuts against the axial protruding portion. The third abutting portion includes an inclined portion 187 that is inclined so as to approach the first wall portion toward the main body.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a vehicle seat structure. [Background technology]

[0002] A reclining mechanism is usually provided on the side of the seat back of a vehicle seat. The reclining mechanism adjusts the position of the seat back and is covered by an operation cover (operation member). The operation cover rotates around the rotation axis of the seat back to operate the reclining mechanism.

[0003] Patent Document 1 describes a vehicle seat having a reclining lever that operates a reclining mechanism that adjusts the seat back position, and a height adjustment lever that operates a height adjustment mechanism that adjusts the height of the seat position. The reclining lever and the height adjustment lever are operating members that are provided on the side of the seat and can be operated in a predetermined direction.

[0004] These operating members are often made of resin because they function as covers for operating mechanisms (position adjustment mechanisms) such as a reclining mechanism or height adjustment mechanism that are operated in response to the operation of the occupant. When the position adjustment mechanism tilts around a predetermined tilt axis or rotates around a rotation axis by operating the operating member, the portion of the operating member that is gripped and operated by the occupant (grip portion) is provided at a position away from these predetermined axes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-127165 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, if a positional deviation occurs between the operating member and the position adjustment mechanism due to dimensional errors or tolerances, the operating member will become more wobbly the further it is from the predetermined axis of the position adjustment mechanism. Therefore, the amount of displacement caused by the wobble increases in the grip of the operating member, which is undesirable. In addition, when the same operating member is applied to multiple vehicle seats with different structures installed in different vehicle models, the operating member is likely to become wobbly.

[0007] In view of the above problems, the present invention has an object to provide a vehicle seat structure that can prevent rattling of an operation cover relative to a position adjustment mechanism. [Means for solving the problem]

[0008] In order to solve the above problems, a representative configuration of a vehicle seat structure according to the present invention is a vehicle seat structure including a position adjustment mechanism disposed on a side of a vehicle seat to adjust a position of the seat, and an operation cover covering the position adjustment mechanism and rotating around a predetermined rotation axis to operate the position adjustment mechanism, the position adjustment mechanism having an engagement portion that engages with the operation cover and a rotation shaft portion that supports the engagement portion rotatably around the rotation shaft, the engagement portion having an axial protruding portion that protrudes from the rotation shaft portion toward the operation cover in a rotation axis direction along the rotation shaft of the rotation shaft portion, and a rotation shaft portion that supports the engagement portion rotatably from the axial protruding portion. The operating cover has a predetermined main body, a first wall portion and a second wall portion standing from the main body toward the engagement portion and facing each other across the engagement portion, a first abutment portion which is an opening formed in the first wall portion and abuts against the intersecting protrusion of the engagement portion, a second abutment portion formed in the first wall portion and abuts against the tip of the axial protrusion, and a third abutment portion formed in the second wall portion and positioned offset from the first abutment portion and abuts against the axial protrusion, and the third abutment portion includes an inclined portion which is inclined so as to approach the first wall portion as it approaches the main body. Effect of the Invention

[0009] According to the present invention, it is possible to provide a vehicle seat structure that can prevent the operation cover from rattling relative to the position adjustment mechanism. [Brief description of the drawings]

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

[0011] A representative configuration of a vehicle seat structure according to one embodiment of the present invention is a vehicle seat structure including a position adjustment mechanism disposed on a side of a vehicle seat for adjusting a position of the seat, and an operation cover covering the position adjustment mechanism and rotating around a predetermined rotation axis to operate the position adjustment mechanism. The position adjustment mechanism has an engagement portion that engages with the operation cover, and a rotation shaft portion that supports the engagement portion so as to be rotatable around the rotation shaft, and the engagement portion has an axial protruding portion that protrudes from the rotation shaft portion toward the operation cover in a rotation axis direction along the rotation shaft of the rotation shaft portion, and a rotation shaft protruding from the axial protruding portion toward the rotation axis direction. and an intersecting protrusion protruding in an intersecting direction intersecting the axial direction, and the operation cover has a predetermined main body, a first wall portion and a second wall portion standing from the main body toward the engagement portion and facing each other across the engagement portion, a first abutment portion which is an opening formed in the first wall portion and abuts against the intersecting protrusion of the engagement portion, a second abutment portion formed in the first wall portion and abuts against the tip of the axial protrusion, and a third abutment portion formed in the second wall portion and positioned offset from the first abutment portion and abuts against the axial protrusion, and the third abutment portion includes an inclined portion which is inclined so as to approach the first wall portion as it approaches the main body.

[0012] In the above configuration, the third abutting portion of the operation cover is arranged offset from the first abutting portion. Therefore, when engaging the operation cover with the engaging portion of the position adjustment mechanism, the periphery of the intersecting protruding portion of the engaging portion can be elastically deformed to easily bring the intersecting protruding portion into contact with the first abutting portion.

[0013] Also, the third abutting portion has a larger protruding amount toward the first wall portion as it approaches the main body due to the inclined portion. Therefore, even if the relative position between the operation cover and the engaging portion of the position adjustment mechanism changes, the first abutting portion of the operation cover contacts the intersecting protruding portion of the engaging portion, and the third abutting portion including the inclined portion contacts the axially protruding portion of the engaging portion, thereby sandwiching the engaging portion. Thus, according to the above configuration, it is possible to prevent the operation cover from rattling with respect to the position adjustment mechanism.

[0014] The inclined portion of the above-described third abutting portion is preferably formed at a position closer to the main body than the first abutting portion. Thereby, when the first abutting portion of the operation cover contacts the intersecting protruding portion of the engaging portion and the third abutting portion contacts the axially protruding portion of the engaging portion, the axially protruding portion of the engaging portion is pressed from the third abutting portion toward the first wall portion. For this reason, the first abutting portion and the intersecting protruding portion can be surely engaged.

[0015] The inclined portion of the above-described third abutting portion preferably has a starting point of the inclination at a position farther from the main body than the tip of the axially protruding portion. Thereby, the operation cover can press the tip of the axially protruding portion of the engaging portion by the inclined portion of the third abutting portion formed on the second wall portion, and further press the intersecting protruding portion of the engaging portion by the first abutting portion formed on the first wall portion. Thereby, the operation cover can sandwich the engaging portion of the position adjustment mechanism and surely suppress the rattling with respect to the position adjustment mechanism. Also, even if a gap is generated between the inclined portion of the third abutting portion or the first abutting portion and the engaging portion, this gap can be reduced, so that the rattling of the operation cover can be suppressed.

[0016] The second abutment portion may extend from a first wall portion of the operation cover to a rear surface of the main body, and a first recessed portion recessed toward the second abutment portion may be formed on the surface of the first wall portion opposite to the surface on which the second abutment portion is formed.

[0017] As a result, when the first contact portion of the first wall portion contacts the intersecting protrusion of the engagement portion and the second contact portion of the first wall portion contacts the axial protrusion of the engagement portion, not only does the engagement portion elastically deform, but the first wall portion also becomes more easily deformed by the first recessed portion. This makes it easy to perform the engagement work of engaging the operation cover with the engagement portion of the position adjustment mechanism.

[0018] It is preferable that a second recessed portion recessed toward the first recessed portion is formed on the surface of the main body, whereby in the engagement operation of engaging the operation cover with the engagement portion of the position adjustment mechanism, the surface of the main body is easily deformed by the second recessed portion, making the engagement operation easier to perform. EXAMPLES

[0019] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0020] 1 is a diagram showing a vehicle seat structure 100 according to an embodiment of the present invention. In each of the following drawings, the front-rear direction of the vehicle is indicated by arrows Front and Back, the left and right directions in the vehicle width direction are indicated by arrows Left and Right, and the top-bottom direction of the vehicle is indicated by arrows Up and Down.

[0021] The vehicle seat structure 100 includes a reclining vehicle seat 102. The vehicle seat 102 includes a headrest 104, a seat back 106, and a seat cushion 108, and the seat back 106 can be inclined relative to the seat cushion 108 by a reclining mechanism 110 (see FIG. 2), which is a position adjustment mechanism.

[0022] A side plate 112 is fixed to the seat cushion 108. The side plate 112 is guided by a pair of seat rails 114a, 114b. The pair of seat rails 114a, 114b are fixed to the floor surface of the vehicle and extend in the front-rear direction of the vehicle. Therefore, the vehicle seat 102 is guided by the pair of seat rails 114a, 114b via the side plate 112, and is thus movable in the front-rear direction of the vehicle. In addition, a side cover 116 that covers the side surface 106a of the seat back 106 and the side plate 112 is attached to the vehicle seat 102.

[0023] 2, and an operation cover 118. The reclining mechanism 110 is disposed on a side surface 106a of the vehicle seat 102, and adjusts the position of the seat back 106. The side surface 106a of the vehicle seat 102 includes a side surface of the seat cushion 108, the seat back 106, or a connecting portion between the seat back 106 and the seat cushion 108.

[0024] Operation cover 118 shown in Fig. 1 is a resin-molded member that covers side cover 116 and reclining mechanism 110. Operation cover 118 operates reclining mechanism 110 by rotating about a predetermined rotation axis α indicated by a dashed line in the figure. Operation cover 118 further has a predetermined main body 120. Note that surface 120a of main body 120 is shown in Fig. 1.

[0025] The main body 120 of the operation cover 118 includes a facing portion 122, a connecting portion 124, and a grip portion 126. The facing portion 122 is a portion through which the rotation axis α passes, and faces and covers the reclining mechanism 110. The grip portion 126 is a portion that is gripped and operated by an occupant, and is located away from the rotation axis α as shown in the figure. The connecting portion 124 is a portion that connects the facing portion 122 and the grip portion 126.

[0026] Here, if misalignment occurs between operation cover 118 and reclining mechanism 110 due to dimensional errors, tolerances, etc., the rattle of operation unit cover 118 increases the farther it is from rotation axis α. For this reason, the amount of displacement due to rattle may be large, particularly in grip portion 126. Therefore, vehicle seat structure 100 employs a configuration that prevents operation cover 118 from rattling relative to reclining mechanism 110. This will be specifically described below.

[0027] In the vehicle seat structure 100, the reclining mechanism 110 is exemplified as the position adjustment mechanism, but the position adjustment mechanism is not limited to this. As an example, the position adjustment mechanism may be a height adjustment mechanism that adjusts the height of the seat cushion 108 and thus the vehicle seat 102, or a position adjustment mechanism for moving the seat cushion 108 and thus the vehicle seat 102 forward / backward / left / right or rotating.

[0028] Fig. 2 is a diagram showing the reclining mechanism 110 of the vehicle seat structure 100 of Fig. 1. Fig. 2(a) shows the main parts of the reclining mechanism 110 in a state where the side cover 116 and the operation cover 118 are omitted from the vehicle seat structure 100 of Fig. 1. Fig. 2(b) shows some members of the reclining mechanism 100. Fig. 3 is a diagram showing the back surface 120b of the main body 120 of the operation cover 118 of Fig. 1.

[0029] 2(a), the reclining mechanism 110 includes a support plate 128, a rod-shaped body 130, a return member 132, a holding member 134, and a rotation support portion 136. The support plate 128 is fixed to a side surface 106a of the seat back 106 by, for example, bolts 138a, 138b.

[0030] The rod-shaped body 130 passes through the rotation axis α and protrudes toward the operation cover 118, with its tip 130a abutting against an axis-side protrusion 140 (see FIG. 3) of the operation cover 118. The return member 132 is a spring that biases the seat back 106 to tilt forward. The holding member 134 is attached to the support plate 128 and holds the return member 132.

[0031] The rotation support part 136 is a member that rotatably supports the operation cover 118, is inserted through the rod-shaped body 130, and rotates around a rotation axis α in response to operation of the operation cover 118. The rotation support part 136 also has a pair of engagement parts 142, 144 and a rotation shaft part 146, as shown in FIG. 2(b).

[0032] The pair of engaging portions 142, 144 engage with a pair of engaged portions 148, 150 of the operation cover 118 shown in Fig. 3, respectively. The rotating shaft portion 146 is a band-shaped portion that supports the engaging portions 142, 144 rotatably around a rotating axis α, and has a hole portion 152 shown in Fig. 2(b). The rod-shaped body 130 shown in Fig. 2(a) is inserted into the hole portion 152. Here, the rotating axis α shown in Figs. 1 and 2(a) is the rotating axis of the rotating shaft portion 146, and a straight line passing through this rotating axis is virtually shown in the figures as a "virtual rotating axis line."

[0033] The engaging portion 142 has an axial protruding portion 154 and an intersecting protruding portion 156. The axial protruding portion 154 is bent from one end portion 146a of the rotating shaft portion 146 toward one engaged portion 148 (see FIG. 3) of the operation cover 118 shown in FIG. 3, and protrudes in a direction along the rotating axis α of the rotating shaft portion 146 (rotating axis direction). The intersecting protruding portion 156 protrudes from the axial protruding portion 154 in a direction intersecting the rotating axis direction.

[0034] The engaging portion 144 has an axial protruding portion 158 and an intersecting protruding portion 160. The axial protruding portion 158 is bent from the other end portion 146b of the rotating shaft portion 146 toward the other engaged portion 150 of the operation cover 118 shown in Fig. 3, and protrudes in the rotation axis direction. The intersecting protruding portion 160 protrudes from the axial protruding portion 158 in a cross direction that intersects with the rotation axis direction.

[0035] Fig. 4 is a diagram showing one of the engaged parts 148 of the operation cover 118 in Fig. 3 and its periphery. Fig. 4(a) shows an enlarged view of the engaged part 148 in Fig. 3 and its periphery. Fig. 4(b) is a perspective view showing the engaged part 148 in Fig. 4(a) and its periphery as viewed from another direction. Fig. 5 is a diagram showing each cross section of the operation cover 118 in Fig. 4(a).

[0036] The engaged portion 148 has a first wall portion 162 and a second wall portion 164. The first wall portion 164 and the second wall portion 164 stand from the rear surface 120a of the main body 120 toward the engaging portion 142 as shown in the AA cross section of Fig. 5(a), and face each other with the engaging portion 142 in between. Note that Fig. 5(a) shows a cross section in a state in which the engaged portion 148 of the operation cover 118 is engaged with the engaging portion 142 of the rotation support portion 136 of the reclining mechanism 110.

[0037] 4(a) and 4(b), the first wall portion 164 and the second wall portion 164 are connected by a pair of side walls 166a, 166b. This allows the engaged portion 148 to have a frame shape, thereby increasing the rigidity.

[0038] Moreover, a plurality of ribs are arranged in a lattice pattern around the engaged portion 148. As an example, reinforcing ribs 168a, 168b are connected to the side wall 166b of the engaged portion 148. The reinforcing ribs 168a, 168b are connected to the connecting ribs 170a, 170b. Furthermore, a reinforcing rib 172 is connected to the first wall portion 162. The reinforcing rib 172 is connected to the connecting rib 174. In this way, the rigidity of the engaged portion 148 and its surroundings is further increased.

[0039] Further, the first wall portion 162 is formed with a first abutment portion 176 and a second abutment portion 178. The first abutment portion 176 is an opening formed in the first wall portion 162 as shown in Fig. 5(a), and abuts against the intersecting protrusion 156 of the engagement portion 142. The first abutment portion 176 includes a first outer abutment portion 177a and a first inner abutment portion 177b. The first outer abutment portion 177a and the first inner abutment portion 177b are spaced apart by a predetermined distance in the rotation axis direction so that the intersecting protrusion 156 can abut against them.

[0040] 5(a), the second contact portion 178 extends from the first wall portion 162 to the rear surface 120b of the main body 120. In addition, the second contact portion 178 is capable of contacting the tip 154a (see FIG. 2(b)) of the axial protruding portion 154 of the engagement portion 142.

[0041] Further, a first recessed portion 180 is formed in the first wall portion 162. As shown in Fig. 5(a), the first recessed portion 180 is provided on the surface of the first wall portion 162 opposite to the surface on which the second abutting portion 178 is formed, and is recessed toward the second abutting portion 178. Furthermore, a second recessed portion 182 recessed toward the first recessed portion 180 is formed in the front surface 120a of the main body 120. The second recessed portion 182 defines the facing portion 122 of the operation cover 118 shown in Fig. 1.

[0042] Furthermore, first wall portion 162 has an end portion farther from rear surface 120b of main body 120 forming tapered portion 184. Therefore, engaged portion 148 of operation cover 118 can easily engage with engaging portion 142 of reclining mechanism 110.

[0043] As shown in FIGS. 4(a) and 4(b), third abutting portions 186 and 188 are formed on the second wall portion 164. The third abutting portions 186 and 188 are offset from the first abutting portion 176 in the direction indicated by arrow β (offset direction) as shown in FIG. 4(a), and are located at positions not facing the first abutting portion 176. The offset direction is not particularly limited as long as the positions of the third abutting portions 186 and 188 are shifted so as not to face the first abutting portion 176. As an example, in FIG. 4(a), when facing the back surface 120b of the main body 120 of the operation cover 118, the direction orthogonal to the direction in which the first wall portion 162 and the second wall portion 164 face each other is illustrated as the offset direction.

[0044] Further, the third abutting portions 186 and 188 include inclined portions 187 and 189 as shown in FIG. 4(a). The inclined portion 187 is inclined so as to approach the first wall portion 162 from the starting point C of the inclination toward the back surface 120b of the main body 120 as shown in the cross-section taken along line B-B of FIG. 5(b). Further, the third abutting portion 186 including the inclined portion 187 is a portion surrounded by the chain line shown in FIG. 5(b).

[0045] Here, in FIG. 5(c), the first abutting portion 176, the second abutting portion 178, and the engaging portion 142 shown in FIG. 5(a) are shown by chain lines with respect to the cross-section taken along line B-B of FIG. 5(b). As shown in FIG. 5(c), the inclined portion 187 of the third abutting portion 186 is formed at a position closer to the back surface 120b of the main body 120 than the first inner abutting portion 177b of the first abutting portion 176.

[0046] Further, the starting point C of the inclination of the inclined portion 187 is located farther from the back surface 120b of the main body 120 than the tip 154a of the axially projecting portion 154 of the engaging portion 142. Thereby, as shown by arrow D in FIG. 5(c), the operation cover 118 presses the tip 154a of the axially projecting portion 154 of the engaging portion 142 by the inclined portion 187 of the third abutting portion 186. Further, as shown by arrow E in FIG. 5(c), the operation cover 118 presses the intersecting projecting portion 156 of the engaging portion 142 by the first inner abutting portion 177b of the first abutting portion 176.

[0047] In addition, the third abutment portion 188 including the inclined portion 189 shown in Figure 4 (a) has a shape similar to that of the third abutment portion 186, and is capable of pressing against the tip 154a of the axial protrusion 154 and the intersecting protrusion 156 of the engagement portion 142.

[0048] Therefore, operation cover 118 can clamp engaging portion 142 of reclining mechanism 110 and reliably suppress rattling with respect to reclining mechanism 110. Even if a gap occurs between inclined portions 187, 189 of third contact portions 186, 188 and engaging portion 142, or between first contact portion 176 and engaging portion 142, this gap can be reduced by clamping engaging portion 142. Therefore, rattling of operation cover 118 can be suppressed.

[0049] 5(c), the inclined portion 187 of the third contact portion 186 is formed at a position closer to the rear surface 120b of the main body 120 than the first inner contact portion 177b of the first contact portion 176. Therefore, the axial protrusion 154 of the engagement portion 142 is pressed from the third contact portion 186 toward the first wall portion 162. This allows the intersecting protrusion 156 of the engagement portion 142 to reliably engage with the first contact portion 176.

[0050] 5(c), the axial protruding portion 154 of the engaging portion 142 is configured to protrude toward the back surface 120b of the main body 120 of the operation cover 118 more than the intersecting protruding portion 156, and further, the inclined portion 187 of the third abutting portion 186 is formed at a position closer to the back surface 120b of the main body 120 than the first outer abutting portion 177a. Therefore, the axial protruding portion 154 of the engaging portion 142 can be sandwiched from the intersecting directions indicated by the arrows F and G in FIG. 5(c) between the inclined portion 187 and a portion of the first wall portion 162 located closer to the back surface 120b of the main body 120 than the first outer abutting portion 177a.

[0051] Furthermore, in vehicle seat structure 100, third contact portions 186, 188 of operation cover 118 are disposed offset from first contact portion 176. Therefore, when operation cover 118 is engaged with engagement portion 142 of reclining mechanism 110, the periphery of intersecting protrusion 156 of engagement portion 142 can be elastically deformed to make it easier to bring intersecting protrusion 156 into contact with first contact portion 176.

[0052] Further, the third contact portions 186, 188 have a greater protrusion amount toward the first wall portion 162 due to the inclined portions 187, 189 as they move toward the rear surface 120b of the main body 120. As an example, the protrusion amount due to the inclined portion 187 of the third contact portion 186 becomes particularly large from position Xb (i.e., starting point C of the inclination) closer to the rear surface 120b of the main body 120 than position Xc shown in Fig. 5(c) toward position Xa closer to the rear surface 120b of the main body 120 than position Xb. Note that position Xb is closer to the rear surface 120b of the main body 120 than position Xd.

[0053] Therefore, even if the relative position between operation cover 118 and engagement portion 142 of reclining mechanism 110 changes, first abutment portion 176 of operation cover 118 abuts against intersecting protrusion 156 of engagement portion 142, and third abutment portions 186, 188 including inclined portions 187, 189 abut against axial protrusion 154 of engagement portion 142, thereby enabling engagement portion 142 to be clamped. Therefore, according to vehicle seat structure 100, it is possible to prevent operation cover 118 from rattling with respect to reclining mechanism 110.

[0054] As shown in FIG. 5(b), the inclined portion 187 of the third contact portion 186 protrudes more toward the first wall portion 162 toward the back surface 120b of the main body 120, and further extends to the back surface 120b of the main body 120. Therefore, the second wall portion 164 on which the third contact portion 186 is formed becomes less elastically deformable toward the back surface 120b side of the main body 120, and the force indicated by the arrow D in FIG. 5(c) becomes larger. Furthermore, the main body 120 of the operation cover 118 has an inclined surface 120c shown in FIG. 5(b). This inclined surface 120c is inclined so as to follow the root of the inclined portion 187 of the third contact portion 186, i.e., the portion of the inclined portion 187 that contacts the back surface 120b of the main body 120. Since the second wall portion 164 on which the third abutment portion 186 including the inclined portion 187 is formed is provided on the back surface 120b side including the inclined surface 120c of the main body 120, it becomes easier to apply the force indicated by the arrow D in Figure 5 (c) to, for example, the tip 154a of the axial protrusion 154 of the engagement portion 142.

[0055] Further, the second contact portion 178 extends from the first wall portion 162 of the operation cover 118 to the back surface 120b of the main body 120, and a first recessed portion 180 is formed in the first wall portion 162. As a result, when the first contact portion 176 of the first wall portion 162 contacts the intersecting protruding portion 156 of the engaging portion 142 and the second contact portion 178 of the first wall portion 162 contacts the axial protruding portion 154 of the engaging portion 142, not only the engaging portion 142 is elastically deformed, but also the first wall portion 162 is easily deformed by the first recessed portion 180. Therefore, the operation of engaging the operation cover 118 with the engaging portion 142 of the reclining mechanism 110 can be easily performed.

[0056] Furthermore, a second recessed portion 182 recessed toward the first recessed portion 180 is formed on surface 120a of main body 120 of operation cover 118. As a result, in the engagement operation of engaging operation cover 118 with engagement portion 142 of reclining mechanism 110, surface 120a of main body 120 is easily deformed by second recessed portion 182, making the engagement operation easier to perform.

[0057] Furthermore, in the vehicle seat structure 100, the occurrence of rattle can be suppressed if the abutment between the tip 130a of the rod-shaped body 130 of the reclining mechanism 110 and the axis-side projection 140 of the operation cover 118, and the abutment between the first abutment portion 176 and the intersecting projection 156 of the engagement portion 142 can be maintained. However, for example, if a gap occurs between the tip 130a of the rod-shaped body 130 and the axis-side projection 140 due to dimensional errors or tolerances between the operation cover 118 and the reclining mechanism 110, rattle may occur in which the intersecting projection 156 and the first abutment portion 176 repeatedly go between an abutting state and a non-abutting state.

[0058] In contrast, according to the vehicle seat structure 100, even if the operation cover 118 attempts to displace so that the intersecting protrusion 156 and the first abutment portion 176 separate due to the above-mentioned gap, the above-mentioned displacement can be regulated by the abutment between the inclined portion 187 of the third abutment portion 186 and the tip 154a of the axial protrusion 154 of the engagement portion 142, so that the occurrence of rattling due to the occurrence of the above-mentioned gap and the amount of displacement of the operation cover 118 due to the rattle can be suppressed.

[0059] Fig. 6 is a diagram showing the other engaged part 150 of the operation cover 118 in Fig. 3 and its periphery. The engaged part 150 has a configuration similar to that of the engaged part 148 described above. That is, the engaged part 150 is formed in a frame shape by a first wall part 162A, a second wall part 164A and side walls 166c and 166d.

[0060] The first wall portion 162A and the second wall portion 164A stand from the rear surface 120b of the main body 120 toward the engaging portion 144 of the reclining mechanism 110, and face each other with the engaging portion 144 in between. The first wall portion 162A is also formed with a first abutment portion 176A and a second abutment portion 178A. The first abutment portion 176A is an opening formed in the first wall portion 162A, and abuts against the intersecting protruding portion 160 of the engaging portion 144. The second abutment portion 178A abuts against the tip 158a of the axial protruding portion 158 of the engaging portion 144 shown in FIG. 2(b).

[0061] Third contact portions 186A and 188A are formed on second wall portion 164A. Third contact portions 186A and 188A are disposed offset from first contact portion 162A and contact axial protruding portion 158. Third contact portion 186A includes inclined portion 187A that is inclined so as to approach first wall portion 162A toward rear surface 120b of main body 120. Third contact portion 188A also includes an inclined portion having a similar shape.

[0062] Further, first wall portion 162A forms tapered portion 184A at the end portion farther from rear surface 120b of main body 120. Therefore, engaged portion 150 of operation cover 118 can easily engage with engaging portion 144 of reclining mechanism 110.

[0063] Furthermore, according to engaged portion 150, first abutment portion 176A abuts against intersecting protruding portion 160 of engaging portion 144, and third abutment portions 186A and 188A abut against axial protruding portion 158 of engaging portion 144, thereby clamping engaging portion 144. Therefore, rattling of operation cover 118 relative to reclining mechanism 110 can be prevented.

[0064] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention. [Industrial Applicability]

[0065] The present invention can be used in a vehicle seat structure. [Explanation of symbols]

[0066] 100...Vehicle seat structure 102...Vehicle seat 104…Headrest 106…Seat back 106a...Side of vehicle seat 108…Seat cushion 110…Reclining mechanism 112…Side plate 114a, 114b…Seat rail 116…Side cover 118…Operation cover 120…Main body of operation cover 120a…Surface of the main body 120b…Back of the main unit 120c…Sloped surface of the body 122…Facing part 124...Connection part 126...Gripping part 128…Support plate 130...Rod-shaped body 130a...tip of rod-shaped body 132...Restoring member 134... Retaining member 136... Rotation support part 138a, 138b...Bolts 140...Axle side protrusion 142, 144...Engagement portion 146... Rotating shaft 146a...One end of the rotating shaft 146b...other end of the rotating shaft 148, 150...engaged parts 152... Hole of rotating shaft 154, 158...Axial protrusion 154a, 158a...Tips of axially protruding parts 156, 160...cross protrusion 162, 162A...1st wall part 164, 164A...Second wall portion 166a, 166b, 166c, 166d...side wall 168a, 168b, 172...Reinforcing ribs 170a, 170b, 174...Connecting ribs 176, 176A...1st contact part 177a...First outer contact part 177b...First inner contact part 178, 178A…Second contact part 180, 180A…First recess 182: second recessed portion; 184, 184A: tapered portion of first wall portion 186, 186A, 188, 188A...Third contact part 187, 187A, 189...Inclined portion of the third contact portion

Claims

1. A vehicle seat structure including a position adjustment mechanism disposed on a side of a vehicle seat to adjust a position of the seat, and an operation cover covering the position adjustment mechanism and rotating about a predetermined rotation axis to operate the position adjustment mechanism, The position adjustment mechanism includes: An engagement portion that engages with the operation cover; a rotation shaft portion that supports the engagement portion so as to be rotatable around the rotation shaft, The engagement portion is an axial protruding portion protruding from the rotation shaft portion toward the operation cover in a rotation axis direction along the rotation shaft of the rotation shaft portion; an intersecting protrusion protruding from the axial protruding portion in a transverse direction intersecting the rotation axis direction, The operation cover includes: A predetermined main body; a first wall portion and a second wall portion that are erected from the main body toward the engaging portion and face each other with the engaging portion therebetween; a first abutment portion that is an opening formed in the first wall portion and abuts against the intersecting protrusion of the engagement portion; a second abutment portion formed on the first wall portion and abutting against a tip end of the axial protrusion; a third abutment portion formed on the second wall portion and disposed offset from the first abutment portion and abutting on the axial protrusion, The vehicle seat structure, wherein the third contact portion includes an inclined portion inclined so as to approach the first wall portion toward the main body.

2. 2. The vehicle seat structure according to claim 1, wherein the inclined portion of the third contact portion is formed at a position closer to the main body than the first contact portion.

3. The vehicle seat structure according to claim 2 , wherein the inclined portion of the third contact portion has an inclination start point at a position farther from the main body than the tip of the axially protruding portion.

4. The second contact portion extends from the first wall portion of the operation cover to a rear surface of the main body, 4. The vehicle seat structure according to claim 1, wherein a first recess is formed in the first wall portion on a surface opposite to the second contact portion, the first recess being recessed toward the second contact portion.

5. 5. The vehicle seat structure according to claim 4, wherein a second recessed portion recessed toward the first recessed portion is formed on the surface of the main body.

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