Vehicle seat

Abstract

To provide a vehicle seat in which an electric component is provided in a seat cushion or a seat back and an electric wire connected to the electric component passes between the seat back and the seat cushion, by making it difficult for a locking member for locking the electric wire to the seat cushion or the seat back to come off. The vehicle seat 100 has a locking member 3 provided at the rear end of the seat cushion 110 or the lower end of the seat back 120, and an electric wire 200 for supplying power to electrical components 2, 112 is locked to the rear end of the seat cushion 110 or the lower end of the seat back 120 by the locking member 3, and the seat cushion 110 or the seat back 120, whichever member has the locking member provided thereon, has a contact prevention portion 62 located behind the locking member 3.

Description

[Technical field]

[0001] The present invention relates to a vehicle seat having electrical components in a seat cushion or a seat back. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a vehicle seat equipped with a seat cushion that supports the buttocks of an occupant and a seat back provided at a rear end portion of the seat cushion, which is equipped with electric components such as a heater (see Patent Document 1). These electrical components are generally connected to electric wires that constitute a wire harness arranged inside the vehicle, and are supplied with power from a battery installed in the vehicle.

[0003] When electrical components are mounted on the seat back, the electrical wires connected to the electrical components are often routed through a connection between the rear end of the seat cushion and the lower end of the seat back. Since many seat backs are capable of tilting in the forward and backward directions, when electrical components are provided in the seat back, the electrical wires are often secured to the lower end of the seat back with a locking member (such as a clip) to prevent problems such as connectors coming loose, electrical wires being damaged, or electrical wires becoming misaligned due to repeated tilting. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-040186 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, the number of rear seats in automobiles that can be folded forward until the seat back is horizontal has increased. When the seat back of such a rear seat is folded down, the connection between the seat cushion and the seat back is likely to be largely exposed. If such a rear seat is equipped with the above-mentioned electrical components, the electric wires connected to the electrical components and the locking members that lock the electric wires may be exposed when the seat back is folded down. In such a state, for example, if an attempt is made to load luggage into the luggage compartment behind the rear seat, the luggage may hit the locking member, causing the locking member to come off, resulting in the above-mentioned problem.

[0006] The present invention has been made in consideration of the above-mentioned problems, and has an object to make it difficult for a locking member for locking an electric wire to a seat cushion or a seat back to come off in a vehicle seat that is provided with an electric component in a seat cushion or a seat back and is configured so that an electric wire connected to the electric component passes between the seat back and the seat cushion. [Means for solving the problem]

[0007] In order to solve the above problems, the invention described in claim 1 is: A vehicle seat including a seat cushion on which an occupant can be seated, a seat back attached to a rear end portion of the seat cushion, and an electric component provided on at least one of the seat cushion and the seat back, The seat back can be tilted from an upright position to a reclined position so as to overlap an upper surface of the seat cushion, A locking member is provided at the lower end of the seat back when in an upright position, an electric wire for supplying power to the electric component is fastened to a lower end portion of the seat back by the fastening member; The seat back includes a contact restriction portion formed of a wire extending in the left and right directions, and a seat back frame forming a skeleton of the seat back includes a panel material extending in a plate shape in the up, down, left and right directions when the seat back is in an upright position, When the seat back is in an upright position, the contact prevention portion is located downwardly away from the lower end of the seat back frame and rearward of the locking member, and the contact prevention portion is disposed adjacent to the locking portion. Material At the same height as the bottom end of When the seat back is folded down so as to overlap an upper surface of the seat cushion, the contact restriction portion is located on the locking member at a position aligned with a rear end of the locking member, The arrangement of the locking member in the left-right direction is closer to the center of the panel material than to the side edge of the panel material, The vehicle seat is characterized in that the position in the left-right direction at which the electric wire is engaged with the lower end portion of the seat back by the engaging member is closer to the center of the panel material than the side edge of the panel material.

[0008] The invention described in claim 2 is the vehicle seat described in claim 1, The locking member is ,before The clip is characterized in that it can be detachably attached to the seat back.

[0011] Claim 3 The invention described in claim 1 The vehicle seat according to claim 1, The seat back has a pair of support portions aligned in a width direction thereof, The contact prevention portion is provided to extend in a width direction of the seat back, and both ends are supported by the pair of support portions, The locking member is characterized in that it is located between the pair of support portions.

[0012] Claim 4 The invention described in claim 3 The vehicle seat according to claim 1, The locking member is provided on the seat back, The pair of support portions are attached to a front surface of the seat back frame, which is a flat plate provided inside the seat back and is substantially parallel to a surface with which the back of an occupant comes into contact.

[0013] Claim 5 The invention described in claim 4 The vehicle seat according to claim 1, The contact prevention portion is located forward of a rear surface of the seat back frame when the seat back is in an upright position.

[0014] Claim 6 The invention described in claim 5 The vehicle seat according to claim 1, The locking member has an attachment portion that is attached to the seat back and an electric wire holding portion that holds the electric wire, When the seat back is in an upright position, the contact prevention portion is located rearward of the attachment portion.

[0015] The invention described in claim 7 is 6 The vehicle seat according to claim 1, The contact prevention portion is characterized in that, when the seat back is in an upright position, the contact prevention portion is located below the attachment portion of the locking member.

[0016] Claim 8 The invention described in claim 1 is a vehicle seat. The vehicle seat is a rear seat of an automobile, The seat back is configured so as to be able to be tilted forward until the surface with which the occupant's back comes into contact overlaps with the upper surface of the seat cushion. Effect of the Invention

[0017] According to the invention described in claim 1, the contact prevention portion prevents, for example, luggage to be loaded into a vehicle from contacting the locking member. In other words, since the impact from the luggage or the like is suppressed from being applied to the locking member, it is possible to make the locking member less likely to come off. This is particularly effective when the seat back can be tilted forward and the engaging member is exposed.

[0018] Since clips are components that have traditionally been used to fasten electric wires, the invention described in claim 2 eliminates the need for special components to make the fastening components less likely to come off, thereby preventing an increase in the manufacturing costs of vehicle seats.

[0019] Claim 1 According to the invention described above, the contact prevention portion is disposed so as to cross or extend across the engaging member when viewed from behind, so that the engaging member can be protected over a wide range.

[0020] Claim 1 According to the invention described in the above, the contact prevention portion can be easily provided by simply bending a wire and joining an end portion of the wire to the seat cushion or the seat back.

[0021] Claim 3 According to the invention described in the above, since the contact prevention portion is supported at two points by the pair of support portions, the contact prevention portion can protect the locking member from a stronger impact. In addition, since the support portion suppresses impact from the width direction of the seat back, the locking member is more unlikely to come off.

[0022] Claim 4 According to the invention described in the above, the support portion does not protrude toward the rear side of the seat back, so that the unevenness on the rear side of the seat back is reduced. Therefore, when tilting the seat back forward to place luggage on the rear side of the seat back, the contact prevention portion is less likely to get in the way of loading and unloading luggage, etc.

[0023] Claim 5According to the invention described in the above, not only the support portion but also the contact prevention portion will not protrude toward the rear side of the seat back, so that when the seat back is tilted forward to place luggage on the rear side of the seat back, the contact prevention portion is less likely to get in the way of loading and unloading luggage, etc.

[0024] Claim 6 According to the invention described in the above, application of impact to the mounting portion is suppressed, so that the locking member can be more easily protected.

[0025] Claim 7 According to the invention described above, when the seat back is tilted, the contact prevention portion is located rearward and above the locking member, so that the locking member can be more easily protected.

[0026] Claim 8 According to the invention described in the above, even if the locking member is exposed, the contact prevention portion functions more effectively, so that the locking member can still be prevented from coming off easily. [Brief description of the drawings]

[0027] [Figure 1] 1 is a perspective view of a vehicle seat according to an embodiment of the present invention; [Diagram 2] 2 is a perspective view of a seat back frame (rear face) constituting the vehicle seat of FIG. 1 and its surrounding structure. FIG. [Diagram 3] FIG. 2 is an enlarged perspective view of a part of FIG. [Figure 4] FIG. 3 is an enlarged perspective view of a portion of FIG. 2. [Diagram 5] FIG. 3 is an enlarged perspective view of a portion of FIG. 2. [Figure 6A] 2 is a schematic diagram of a vehicle seat (side view) according to the embodiment. FIG. [Figure 6B] 2 is a schematic diagram of a vehicle seat (side view) according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. Note that, in the following embodiments, various technical limitations that are preferable for implementing the present invention are applied, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0029] (Vehicle seats) First, a schematic configuration of a vehicle seat 100 according to this embodiment will be described. Fig. 1 is a perspective view of the vehicle seat 100 (for convenience of explanation, some components are shown through the transparent view), and Fig. 2 is a perspective view of seat back frames 1A, 1B (back sides) constituting the vehicle seat 100 in Fig. 1. In the following description, positions and directions are described as seen from the perspective of an occupant seated in the vehicle seat, that is, according to the front / rear, left / right, up / down arrows shown in the drawings.

[0030] As shown in FIG. 1, the vehicle seat 100 includes a seat cushion 110, a seat back 120, a plurality of head rests 130, arm rests (not shown), and the like. Although FIG. 1 shows a seat for a passenger car, the present invention is applicable to seats for other automobiles such as buses and trucks. Although FIG. 1 shows a rear seat for multiple passengers, the present invention can also be applied to a front seat for one person.

[0031] The seat cushion 110 supports the buttocks of an occupant and is attached to the floor surface of the interior space of the passenger vehicle (not shown). The seat cushion 110 includes a seat cushion frame 111, electric parts 112 for the seat cushion, a pad, a cover, and the like.

[0032] The seat cushion electric component 112 of this embodiment is a heater for warming the buttocks of an occupant, and is provided on the upper surface side of the first seat cushion frame 111 so as to extend in a plane parallel to the seat cushion frame 111. Although Fig. 1 shows a seat cushion having a plurality of seat cushion electric components 112, a single seat cushion electric component may be used. A connector (not shown) is provided at the rear end of the seat cushion electric component 112, and an electric wire 200 constituting a wire harness arranged in the vehicle is connected to the connector. The electrical component 112 for the seat cushion may be, for example, a seat belt reminder or a fan, etc., which receives power from the electric wire 200 to operate, and may be anything that can be built into the seat cushion 110 or attached to the surface of the seat cushion 110.

[0033] The pad is made by foaming urethane resin into the shape of a sheet, and is provided on the seat cushion frame 111 so as to enclose the first seat cushion frame 111 and the electric parts 112 for the seat cushion from the front side of the seat cushion frame 111. The cover covers the seat cushion frame 111 and the pad.

[0034] The seat back 120 has its lower end (the end closest to the seat cushion 110) supported by an axle that extends in the left-right direction (vehicle width direction) at the rear end of the seat cushion 110, and can be rotated around the axle by releasing a lock (not shown). That is, the seat back 120 can be in an upright state as shown in FIG. 1, or in a reclined state so that its front surface (the surface that contacts the occupant's back) overlaps with the upper surface (the seat surface) of the seat cushion 110. The seat back 120 is composed of a first seat back 121 forming the center and right side portions, and a second seat back 122 forming the left side portion. These are each configured to be able to rotate independently.

[0035] The first seat back 121 includes a first seat back frame 1A, electric parts 2 for the seat back, a locking member 3, a pad, a cover, and the like. The first seat back 121 has a pair of insertion holes (not shown) formed in an upper portion of the right side thereof for attaching the head rest 130. A recess (not shown) for accommodating an armrest is formed in the left side portion of the first seat back 121 (the center portion of the seat back 120), and a headrest 130 is provided above the recess.

[0036] The first seatback frame 1A is a flat plate-shaped member that forms the framework of the first seatback 121, and is arranged inside the first seatback 121 so as to be approximately parallel to the front surface of the first seatback 121 (the surface that contacts the back of the occupant). The first seat back frame 1A will be described in detail later.

[0037] The seatback electrical component 2 in this embodiment is a heater for warming the back of an occupant, and is provided on the front side of the first seatback frame 1A so as to extend in a plane parallel to the first seatback frame 1A. A connector (not shown) is provided at the lower end of the seat back electrical component 2, and an electric wire 200 constituting a wire harness arranged in the vehicle is connected to the connector. In addition, like the electrical component 112 for the seat cushion, the electrical component 2 for the seat back operates by receiving power from an electric wire 200, and may be any component that can be built into the first seat back 121 or attached to the surface of the first seat back 121.

[0038] The locking member 3 in this embodiment is attached to the lower end of the first seat back frame 1A. The locking member 3 holds the electric wire 200, and is attached to the first seatback frame 1A to lock the electric wire to the lower end of the first seatback frame 1A. The details of the locking member 3 will be described later.

[0039] The pad is made by foaming urethane resin into the shape of a sheet, and is provided on the first seatback frame 1A so as to enclose the first seatback frame 1A and the seatback electrical components 2 from the front side of the first seatback frame 1A. The cover covers the first seat back frame 1A and the pad.

[0040] The second seat back 122, like the first seat back 121, includes a second seat back frame 1B, electric parts 2 for the seat back, a locking member 3, a pad, a cover, and the like. The second seat back 122 has a structure substantially similar to that of the first seat back 121, except that only the right side portion of the second seat back 121 is made symmetrical. For this reason, detailed descriptions of each portion of the second seat back 122 will be omitted.

[0041] Each headrest 130 includes a headrest body 131 and a pair of pillars 132 . The headrest body 131 is made up of a pad formed from foamed urethane resin and a surface layer. The pair of pillars 132 are rod-shaped members that protrude from the surface of the headrest main body 131 so as to extend in parallel with each other at the same interval as the pair of insertion holes described above. Each headrest 130 is attached to the seat back 120 by inserting a pair of pillars 132 into insertion holes provided in the upper part of the seat back 120. A stopper member (not shown) is provided near the entrance of the insertion hole, and it is possible to stop the pillars 132 in a state where they are inserted by a desired length (headrest main body 131 is at a desired height).

[0042] The armrest is a member formed in a rectangular parallelepiped shape, and one end in the longitudinal direction is supported by an axis rod provided to extend in the left-right direction at the bottom of the recess of the seat back 120, and can be rotated around the axis rod as the center of rotation. In other words, the armrest can be in an upright state stored in the recess, or in a reclined state so that the other end in the longitudinal direction is in contact with the seat surface of the seat cushion 110.

[0043] (Seat back frame) Next, a specific configuration of the first seat back frame 1A constituting the first seat back 121 will be described. As shown in Figures 1 and 2, the first seatback frame 1A includes a panel material 10, multiple frame materials 20A-20E, a headrest holding portion 30, a bracket 40 for a seat belt guide member, a pair of armrest brackets 50, a locking member protection portion 60, etc.

[0044] The panel material 10 is made of a metal such as steel or an aluminum alloy and is formed into a generally flat rectangular plate shape when viewed from the front. The peripheral edge of the panel material 10 is folded forward (in the direction in which the surface requiring reinforcement faces) over substantially the entire periphery. That is, the overall shape of the panel material 10 is like a tray.

[0045] The plurality of frame materials 20A to 20E are rod-shaped members made of metal such as steel or aluminum alloy, and are all welded to the front surface of the panel material 10 (the surface that requires reinforcement). Of these, the upper frame material 20A is disposed at the upper end of the panel material 10 so as to extend along the upper side of the panel material 10. The lower frame material 20B is disposed at the lower end of the panel material 10 so as to extend along the lower side of the panel material 10. The middle frame material 20C is disposed so as to pass through the center of the panel material 10 and extend parallel to the side edge of the panel material 10. The pair of side frame materials 20D are disposed on both left and right end portions of the panel material 10 so as to extend along the side edges of the panel material 10, respectively. The square frame material 20E is disposed on the lower right side of the panel material 10 so as to extend at an angle (approximately 45°) with respect to the lower side or right side of the panel material 10.

[0046] 2, a plurality of reinforcement regions 11-16 for increasing the rigidity of the panel material 10 are provided lined up in the vertical direction on the right side and central portion of the panel material 10. Specifically, on the right side, a first reinforcement region 11 is provided at the top and a fourth reinforcement region 14 is provided at the bottom, with second reinforcement regions 12 and third reinforcement regions 13 alternately provided between them. In the central portion, fifth reinforcing regions 15 and sixth reinforcing regions 16 are provided so as to be arranged alternately.

[0047] Each of the reinforcement regions 11-16 is formed by a plurality of reinforcement parts that protrude linearly from the front surface (the surface that requires reinforcement) along the front surface. The reinforcement parts in this embodiment are formed by forming grooves on the back surface of the panel material 10 by embossing, forming beads (protruding stripes) that linearly bulge the front surface of the panel material 10. This increases the rigidity of the panel material 10, making it less likely to bend.

[0048] The headrest holding portion 30 is provided on the front surface of the right side and center portion of the upper frame material 20A, as shown in Fig. 1. As shown in Fig. 1, the headrest holding portion 30 has a plate-shaped joint portion joined to the front surface of the upper frame material 20A, and a pair of pillar support portions each having a cylindrical shape with both ends open and provided to penetrate the joint portion in the approximately vertical direction at both ends. A cylindrical pillar holding member (not shown) is inserted into the pillar support portion. When a pair of pillars 132 of the headrest 130 are inserted into a pair of insertion holes of the first seat back 121, the pillars 132 are passed through the pillar holding member.

[0049] The seat belt guide member bracket 40 is welded to the side of the head rest holding portion 30 of the upper frame material 20A. A seat belt guide member (not shown) made of, for example, resin, is attached to the seat belt guide member bracket 40. A seat belt (not shown) is passed through the seat belt guide member.

[0050] The pair of arm rest brackets 50 are members that rotatably support the arm rests described above, and are welded to a central portion of the lower frame material 20B. The armrest brackets 50 are provided so as to extend parallel to each other diagonally upward and forward at an interval approximately equal to the width of the armrest in the left-right direction (short side direction) described above. At the tip of each arm rest bracket 50, a shaft hole for passing a shaft rod for supporting the arm rest is formed so as to face each other.

[0051] The locking member protector 60 is a member for protecting the locking member 3 that locks the electric wire 200 arranged in the vehicle to the lower end of the first seatback frame 1A, and is attached to the front surface of the first seatback frame 1A. The details of the locking member protection portion 60 will be described later together with the details of the locking member 3.

[0052] (Lock member and lock member protection part) Next, a description will be given of the details of the locking member protection portion 60 constituting the first seatback frame 1A and the locking member 3 attached to the first seatback frame 1A. Fig. 3 is an enlarged perspective view of a portion of Fig. 1, Figs. 4 and 5 are enlarged perspective views of a portion of Fig. 2, and Figs. 6A and 6B are schematic diagrams of a vehicle seat (side view) according to this embodiment. The locking member protection portion 60 of this embodiment has a pair of support portions 61 and a contact restriction portion 62, as shown in FIGS. In addition, the locking member protection portion 60 of this embodiment is formed by bending a wire or other such material. That is, the support portion 61 and the contact restriction portion 62 are integrated together.

[0053] The pair of support portions 61 are arranged side by side in the lateral width direction of the first seatback frame 1A (first seatback 121), and each of the support portions 61 has a hanging portion 611 and a rearward extending portion 612. The pair of hanging parts 611 are each welded to the right side portion of the lower frame material 20B, and extend downward (away from the headrest 130 and upper frame material 20A) from the front surface of the lower frame material 20B (first seatback frame 1A) until their lower ends (the end farther from the panel material 10) are aligned with the lower end of the locking member 3. The pair of hanging parts 611 extend parallel to each other with a predetermined distance therebetween (a distance longer than the length of the locking member 3 in the lateral width direction).

[0054] The rear extension portion 612 extends rearward (in the direction in which the rear surface of the panel material 10 faces) from the lower end of each hanging portion 611 until its rear end does not exceed the rear surface of the panel material 10 (at its longest, it is flush with the rear surface). The contact prevention portion 62 is provided to extend in the width direction of the first seat back frame 1A, and both ends are connected to the rear ends of the rear extension portions 612. That is, both ends are supported by the pair of support portions 61, respectively. As described above, the rear end of the rear extension portion 612 does not extend beyond the rear surface of the panel material 10, so that the rear end of the contact prevention portion 62 extending continuously from the rear end portion of the rear extension portion 612 is positioned forward of the rear surface of the panel material 10.

[0055] The locking member 3 is attached to the lower end of the first seat back frame 1A between the pair of support portions 61 of the locking member protection portion 60 configured as described above. The locking member 3 has an attachment portion 31 and an electric wire holding portion 32 . The attachment portion 31 is configured to be capable of clamping a portion of the lower end portion of the panel material 10 that is bent forward. That is, the locking member 3 in this embodiment is a clip, and is detachable from the first seat back frame 1A.

[0056] The electric wire holding portion 32 has an insertion portion 321 below the attachment portion 31 and a strip-shaped portion 322 extending thinly from the insertion portion 321 . The tip of the belt-shaped portion 322 is passed from the front through a hole formed in the insertion portion 321 that penetrates in the front-to-rear direction, forming a loop on the front side of the insertion portion, and the electric wire 200 is held by passing the electric wire 200 through the loop. In this embodiment, the electric wires held by the electric wire holding portion are those of a wire harness arranged in a vehicle, but if the electric wires extend from the electric component 2, 112, the electric wires of the electric component 2, 112 may be held.

[0057] The locking member 3 configured in this manner has the electric wire holding portion 32 hanging down from the portion bent forward at the lower end of the panel material 10, and is positioned at least forward of the rear surface of the panel material 10. On the other hand, since the above-mentioned contact prevention portion 62 is located in the vicinity of directly below the rear surface of the panel material 10, the locking member 3 is located forward of the contact prevention portion 62.

[0058] In addition, in the vehicle seat 100 of this embodiment configured as described above, when the first seat back 121 is in the upright position, the contact prevention portion 62 of the locking member protection portion 60 is located rearward of the locking member 3 as shown in FIG. 6A, and is located at approximately the same height as the lower end of the locking member 3 (at least below the mounting portion 31 of the locking member 3). On the other hand, when the first seat back 121 is tilted forward, the contact prevention portion 62 of the locking member protection portion 60 is located in a position aligned with the rear end of the locking member 3 (at least rearward of the mounting portion 31 of the locking member 3) and above the locking member 3, as shown in Figure 6B. In other words, the contact restricting portion 62 is located behind the engaging member no matter which state the first seat back 121 is in.

[0059] As described above, the vehicle seat 100 of this embodiment has a locking member 3 provided at the lower end of the first seat back 121, an electric wire 200 for supplying power to the electrical components 2, 112 is locked to the lower end of the first seat back 121 by the locking member 3, and the first seat back 121 is provided with a contact prevention portion 62 located behind the locking member 3. Thereby, the contact prevention portion 62 prevents, for example, luggage to be loaded into a vehicle from contacting the locking member 3. In other words, since the impact from the luggage or the like is prevented from being applied to the locking member 3, it is possible to make the locking member 3 less likely to come off.

[0060] Moreover, in the vehicle seat 100 according to this embodiment, the locking member 3 is a clip that is detachably attached to the first seat back 121. Since clips are components that have traditionally been used to fasten electric wires, this eliminates the need for special components to make the fastening member 3 less likely to come off, and prevents the manufacturing costs of the vehicle seat 100 from increasing.

[0061] Furthermore, in the vehicle seat 100 according to this embodiment, the contact prevention portion 62 is provided behind the fastening member 3 so as to extend from one side to the other side in a direction perpendicular to the front-rear direction of the fastening member 3. As a result, when viewed from behind, the contact restricting portion 62 is disposed so as to cross or extend across the locking member 3, so that the locking member can be protected over a wide range.

[0062] Moreover, in the vehicle seat 100 according to this embodiment, the contact prevention portion 62 is formed of a wire material. As a result, the contact restriction portion 62 can be easily provided by simply bending the wire and joining the end portion to the first seat back 121.

[0063] In addition, in the vehicle seat 100 according to this embodiment, the first seat back 121 has a pair of support parts 61 arranged in the width direction thereof, the contact prevention part 62 is provided so as to extend in the width direction of the first seat back 121, and both ends are supported by the pair of support parts 61, respectively, and the locking member 3 is located between the pair of support parts 61. As a result, the contact prevention portion 62 is supported at two points by the pair of support portions 61, so that the contact prevention portion 62 can protect the locking member 3 from a stronger impact. Furthermore, since the support portion 61 suppresses the impact from the width direction of the first seat back 121, the locking member 3 becomes more unlikely to come off.

[0064] In addition, in the vehicle seat 100 of this embodiment, the locking member 3 is provided on the first seat back 121, and a pair of support portions 61 are attached to the front surface of a flat first seat back frame 1A provided inside the first seat back 121 approximately parallel to the front surface (the surface with which the occupant's back contacts). As a result, the support portion 61 does not protrude toward the rear side of the first seat back 121, reducing the unevenness on the rear side of the first seat back 121, so when tilting the first seat back 121 forward to place luggage on the rear side of the first seat back 121, the contact prevention portion 62 is less likely to get in the way of loading and unloading luggage, etc.

[0065] Furthermore, in the vehicle seat 100 according to this embodiment, the contact prevention portion 62 is located forward of the back surface of the first seatback frame 1A. As a result, not only the support portion 61 but also the contact prevention portion 62 will not protrude toward the rear side of the first seat back 121, so that when the first seat back 121 is tilted forward to place luggage on the rear side of the first seat back 121, the contact prevention portion 62 is less likely to get in the way of loading and unloading luggage, etc.

[0066] In addition, in the vehicle seat 100 of this embodiment, the locking member 3 has an attachment portion 31 that is attached to the first seat back 121 and an electric wire holding portion 32 that holds an electric wire, and the contact prevention portion 62 is located rearward of the attachment portion 31. This prevents the attachment portion 31 from being subjected to an impact, making it easier to protect the locking member 3.

[0067] Furthermore, in the vehicle seat 100 according to this embodiment, the contact restricting portion 62 is located below the attachment portion 31 of the locking member 3 when the first seat back 121 is in the upright position. As a result, when the first seat back 121 is tilted, the contact restricting portion 62 is located rearward and above the locking member 3, making it easier to protect the locking member 3.

[0068] The vehicle seat 100 according to this embodiment is a rear seat of an automobile. The first seat back 121 is configured so as to be able to be folded forward until the front surface overlaps the upper surface of the seat cushion 110. As a result, even if the locking member 3 is exposed, the contact restriction portion 62 functions more effectively, so that the locking member 3 can still be prevented from coming off easily.

[0069] The same effects and advantages can be said about the second seat back 122, the configuration of which is not specifically described.

[0070] Although the present invention has been specifically described based on the embodiment, the present invention is not limited to the above embodiment and can be modified without departing from the gist of the present invention. For example, in the above embodiment, the locking member 3 and the locking member protection portion 60 are provided on the seat back 120, but the locking member may be provided on the rear end portion of the seat cushion 110, or on both. In that case, the seat cushion (for example, the rear end portion of the seat cushion frame) is provided with a contact restriction portion.

[0071] In the above embodiment, the vehicle seat 100 is a rear seat of an automobile, but it may be a front seat. In that case, it is possible to protect the passenger seated in the rear seat from impacts caused by the feet, etc. In addition, in the above embodiment, the contact prevention portion 62 extends horizontally, but it may extend in the height direction of the seat back 120. In that case, the upper end of the rod-shaped contact prevention portion may be directly welded to the seat back frames 1A, 1B, eliminating the need for a support portion. In the above embodiment, the support portion 61 and the contact restriction portion 62 are integrally formed from a single wire, but they may be separate members.

[0072] In addition, in the above embodiment, an example was described in which electrical components were provided on both the seat cushion 110 and the seat back 120, but electrical components may be provided on only one of them, or one or both may be electrical components other than a heater. In addition, in the above embodiment, the locking member 3 is attached by clamping the lower end portions of the seatback frames 1A, 1B, but it may also be attached by engaging with projections and recesses on the seatback frames 1A, 1B, or by attaching it to the seatback frames 1A, 1B, for example.

[0073] In addition, in the above embodiment, a locking member protection portion 60 is provided on each of the first seat back 121 and the second seat back 122, and a locking member 3 is attached thereto, but it may be provided on only one of the seat backs and the electric wires of the respective seat back electrical components 2 may be locked together. When the locking member protection portion 60 and the locking member 3 are provided in only one location, they may be provided at the central lower end of the seat back 120. [Industrial Applicability]

[0074] The present invention can be used in vehicle seats such as automobile seats. [Explanation of symbols]

[0075] 100 Vehicle seats 110 Seat Cushion 111 Seat cushion frame 112 Electrical parts for seat cushions 120,121,122 Seat back 1A, 1B seat back frame 10 Panel material 11-16 Reinforcement area 20A-20E Frame material 30 Headrest holder 40 Bracket for seat belt guide component 50 Armrest bracket 60 Locking member protection part 61 Support part 611 Drooping part 612 Rear extension 62 Contact Control Section 2 Electrical parts for seat backs 3 Locking member 31 Mounting part 32 Wire holding part 321 Insertion part 322 Belt 130 Headrest 131 Headrest body 132 Pillar 200 Electric wire

Claims

1. A vehicle seat including a seat cushion on which an occupant can be seated, a seat back attached to a rear end portion of the seat cushion, and an electric component provided on at least one of the seat cushion and the seat back, The seat back can be tilted from an upright position to a reclined position so as to overlap an upper surface of the seat cushion, A locking member is provided at the lower end of the seat back when in an upright position, an electric wire for supplying power to the electric component is fastened to a lower end portion of the seat back by the fastening member; The seat back includes a contact restriction portion formed of a wire extending in the left and right directions, and a seat back frame forming a skeleton of the seat back includes a panel material extending in a plate shape in the up, down, left and right directions when the seat back is in an upright position, When the seat back is in an upright position, the contact restriction portion is located downwardly away from a lower end of the seat back frame and rearward of the locking member, and the contact restriction portion is located at the same height as the lower end of the locking member, When the seat back is folded down so as to overlap an upper surface of the seat cushion, the contact restriction portion is located on the locking member at a position aligned with a rear end of the locking member, The arrangement of the locking member in the left-right direction is closer to the center of the panel material than to the side edge of the panel material, A vehicle seat, characterized in that the position in the left-right direction at which the electric wire is engaged with the lower end portion of the seat back by the engaging member is closer to the center of the panel material than the side edge of the panel material.

2. 2. The vehicle seat according to claim 1, wherein the engaging member is a clip that is detachably attached to the seat back.

3. The seat back has a pair of support portions aligned in a width direction thereof, The contact prevention portion is provided to extend in a width direction of the seat back, and both ends are supported by the pair of support portions, 2. The vehicle seat according to claim 1, wherein the engaging member is located between the pair of support portions.

4. The locking member is provided on the seat back, The vehicle seat according to claim 3, characterized in that the pair of support portions are attached to a front surface of the flat seat back frame that is provided inside the seat back and is approximately parallel to a surface with which the back of an occupant contacts.

5. 5. The vehicle seat according to claim 4, wherein the contact restriction portion is located forward of a rear surface of the seat back frame when the seat back is in an upright position.

6. The locking member has an attachment portion that is attached to the seat back and an electric wire holding portion that holds the electric wire, 6. The vehicle seat according to claim 5, wherein the contact prevention portion is located rearward of the attachment portion when the seat back is in an upright position.

7. 7. The vehicle seat according to claim 6, wherein the contact restriction portion is located lower than the attachment portion of the engaging member when the seat back is in an upright position.

8. The vehicle seat is a rear seat of an automobile, 2. The vehicle seat according to claim 1, wherein the seat back is configured to be able to be tilted forward until a surface thereof that comes into contact with the back of an occupant overlaps an upper surface of the seat cushion.

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