Seat

Abstract

To provide a seat that is able to rationally protect a wire harness passed through a frame through-hole formed in a seat frame.SOLUTION: A seat has a seat pad 3 and a planar panel frame 2F for supporting the seat pad 3 from a pad back-side. The panel frame 2F has a frame through-hole F1 through which a wire harness 5A can pass in a direction perpendicular to a surface. The seat pad 3 has a harness protective portion 3B bulging in a hole of the frame through-hole F1 so as to protect the wire harness 5A from contact with a peripheral edge F2 of the frame through-hole F1.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a seat. Specifically, it relates to a seat having a seat pad and a planar panel frame that supports the seat pad from the back side of the pad.

Background Art

[0002] Patent Document 1 discloses a seat in which a wire harness is passed through a frame through-hole formed in a seat frame. Specifically, the wire harness is routed so as to extend along the seat frame, and an intermediate portion thereof is routed from the front side of the frame to the back side of the frame through the frame through-hole formed in the seat frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration described in Patent Document 1, there is a risk that the wire harness may rub against the edge of the frame through-hole. However, if a separate member such as felt is added to protect the wire harness, the number of parts and the cost will increase. Therefore, the present invention provides a seat capable of reasonably protecting a wire harness passed through a frame through-hole formed in a seat frame.

Means for Solving the Problems

[0005] As means for solving the above problems, the seat of the present invention takes the following means.

[0006] That is, the first invention of the present invention is a seat having a seat pad and a planar panel frame that supports the seat pad from the back side of the pad, wherein the panel frame has a frame through-hole through which a wire harness can pass in a direction perpendicular to the plane, and the seat pad has a harness protection portion that bulges into the hole of the frame through-hole so as to protect the wire harness from contact with the peripheral edge of the frame through-hole.

[0007] According to the first invention, the harness protection portion that bulges into the hole of the frame through-hole from the seat pad can reasonably protect the wire harness passing through the frame through-hole from contact with the peripheral edge of the frame through-hole.

[0008] The second invention of the present invention is the seat according to the first invention, wherein the seat pad has a pad through-hole that communicates with the frame through-hole and through which the wire harness can pass in the pad thickness direction that is perpendicular to the plane, the pad through-hole has a guide surface that guides the wire harness to be routed in a direction extending along the panel frame from the frame through-hole on the back side of the frame in a first direction, and the harness protection portion protects the wire harness from contact with the edge in the first direction that forms the peripheral edge of the frame through-hole.

[0009] According to the second invention, the guide surface of the pad through-hole can make it difficult for the wire harness to come into contact with edges other than the edge in the first direction at the frame through-hole. Moreover, the harness protection portion can protect the wire harness from contact with the edge in the first direction at the frame through-hole. Therefore, the size required for the harness protection portion can be suppressed, and the wire harness can be protected more reasonably.

[0010] The third invention of the present invention is the seat according to the second invention, wherein the seat pad and the panel frame are configured as components of the seat cushion, the pad through-hole guides the wire harness to be routed in a direction obliquely extending downward and forward along the guide surface, and the first direction is the front direction of the seat.

[0011] According to the third invention, even if the seat pad is crushed by sitting on the seat cushion, the wire harness can be bent so as to be pushed out in the front direction of the seat along the panel frame without being largely pushed out to the back side of the frame. Thereby, it is possible to make it difficult for the wire harness to interfere with the peripheral components directly below the panel frame. And the wire harness routed to extend along the panel frame in this way can be appropriately protected by the harness protection portion from contact with the peripheral edge of the frame through-hole.

[0012] The fourth invention of the present invention is the seat according to any one of the first to third inventions, wherein the harness protection portion of the seat pad is arranged at a position away from the peripheral edge of the frame through-hole toward the inside of the hole.

[0013] According to the fourth invention, it is possible to make it difficult for the harness protection portion to come into contact with the peripheral edge of the frame through-hole. In particular, it is possible to make it difficult for the roundness formed at the corner of the base end thereof by molding the harness protection portion to bulge from the seat pad to come into contact with the peripheral edge of the frame through-hole.

[0014] The fifth invention of the present invention is the seat according to any one of the first to third inventions, wherein the peripheral edge of the frame through-hole is bent in a bent shape from the panel frame to the back side of the frame, and the harness protection portion of the seat pad bulges to the back side of the frame more than the peripheral edge of the frame through-hole.

[0015] According to the fifth invention, it is possible to appropriately prevent the back surface of the sheet pad from coming into contact with and rubbing against the peripheral edge of the frame through-hole. In addition, the harness protection portion that bulges toward the back side of the frame from the peripheral edge of the frame through-hole can more appropriately protect the wire harness.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0017] Hereinafter, modes for carrying out the present invention will be described with reference to the drawings.

[0018] 《First Embodiment》 (Schematic Configuration of Seat S) First, the configuration of the seat S according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the following description, when indicating each direction such as front-back, up-down, left-right, etc., the respective directions shown in each figure shall be referred to.

[0019] In addition, when indicating each direction with "seat" attached, such as "seat width direction", it shall refer to each direction based on the seat S. In the following description, when no specific reference figure is shown, or when there is no reference numeral corresponding to the reference figure, any one of FIGS. 1 to 4 shall be appropriately referred to.

[0020] As shown in FIG. 1, the seat S according to the present embodiment is configured as a rear seat of an automobile. The seat S includes a seat back (not shown) that serves as the backrest portion of the seated occupant and a seat cushion 1 that serves as the seating portion.

[0021] The seat cushion 1 is installed on the floor of an automobile (not shown). The seat cushion 1 has a metal seat frame 2 forming its skeleton, a seat pad 3 made of foamed urethane installed on the upper part of the seat frame 2, and a seat cover 4 made of fabric that covers the seat pad 3 from the pad surface side. Further, the seat cushion 1 is provided with a seating sensor 5 for detecting the seating of an occupant.

[0022] The seat frame 2 has a pair of left and right long plate-shaped side frames 2A extending in the front-rear direction of the seat along both left and right sides of the seat cushion 1. Further, the seat frame 2 has a round pipe-shaped front pipe 2B extending in the width direction of the seat along the front side of the seat cushion 1. Further, the seat frame 2 has a round pipe-shaped rear pipe 2C extending in the width direction of the seat along the rear side of the seat cushion 1.

[0023] The front pipe 2B is connected so as to be bridged in the width direction of the seat between the front end portions of the pair of left and right side frames 2A. The rear pipe 2C is connected so as to be bridged in the width direction of the seat between the rear end portions of the pair of left and right side frames 2A.

[0024] Further, the seat frame 2 has a round pipe-shaped front rod 2D and a rear rod 2E that are connected so as to be bridged in the width direction between the intermediate portions in the front-rear direction of the pair of left and right side frames 2A. As described above, the seat frame 2 is configured to be assembled in a ladder shape in plan view.

[0025] Further, the seat frame 2 has a panel frame 2F having a rectangular shape in plan view that is connected so as to be bridged in the front-rear direction between the front pipe 2B and the rear rod 2E. The panel frame 2F is welded such that its front edge portion abuts on the front pipe 2B from above, and its rear edge portion abuts on the rear rod 2E from above.

[0026] Further, the panel frame 2F is welded such that the middle part in the front-rear direction of the seat abuts on the front rod 2D from above. Thereby, the panel frame 2F is supported from the back side of the frame at three positions in the front-rear direction of the seat over the entire width of the seat in the seat width direction by three members, namely the front pipe 2B, the front rod 2D, and the rear rod 2E.

[0027] The seat frame 2 functions as a pad receiving part that supports the seat pad 3 installed on the upper part thereof from the back side of the pad. Specifically, the seat frame 2 supports each top plate side (both side parts in the seat width direction) of the seat pad 3 from the back side of the pad by the pair of left and right side frames 2A thereof.

[0028] Further, the seat frame 2 supports the main top plate (central part in the seat width direction) of the seat pad 3 from the back side of the pad by the panel frame 2F thereof. Specifically, the panel frame 2F supports the buttocks and thighs of the seated occupant in a planar manner from the back side of the pad via the seat pad 3.

[0029] In the region between the front pipe 2B and the front rod 2D of the panel frame 2F, a frame through hole F1 penetrating in a rectangular hole shape when viewed from the bottom is formed. The frame through hole F1 is formed at the center in the seat width direction of the panel frame 2F. Specifically, as shown in FIGS. 2 to 4, the frame through hole F1 is formed close to the front rod 2D such that the trailing edge of the hole is positioned directly above the front rod 2D.

[0030] The panel frame 2F is configured to support the buttocks of the seated occupant in the region between the front rod 2D and the rear rod 2E. And the panel frame 2F is configured to support the thighs of the seated occupant in the region between the front rod 2D and the front pipe 2B.

[0031] As shown in FIG. 4, the frame through-hole F1 is a hole for passing a wire harness 5A extending from a seating sensor 5 disposed on the pad surface (top surface) of the seat pad 3 through the panel frame 2F in a direction perpendicular to the surface. Specifically, the wire harness 5A is passed through the pad through-hole 3A formed in the seat pad 3 in the thickness direction of the pad and then through the frame through-hole F1. Then, as shown in FIG. 1, the wire harness 5A is drawn out from the frame through-hole F1 so as to extend in the seat front direction on the back side of the frame of the panel frame 2F and is routed so as to curve in the seat width direction (left side). Here, the seat front direction corresponds to the "first direction" in the present invention.

[0032] As shown in FIG. 4, the pad through-hole 3A is formed directly above the frame through-hole F1. The pad through-hole 3A is formed in a shape that obliquely extends downward and forward from the pad surface (top surface) of the seat pad 3 to the back surface of the pad. Specifically, the pad through-hole 3A is formed in a shape that obliquely extends downward and forward from a position substantially directly above the front rod 2D. The pad through-hole 3A is configured to have a rectangular cross-sectional shape that is slightly smaller than the hole shape of the frame through-hole F1 and extends straight downward and forward.

[0033] Thereby, the pad through-hole 3A is formed at the center in the seat width direction of the portion that supports the thigh of the seated occupant on the seat pad 3, which is in front of the portion that supports the buttocks. Specifically, the pad through-hole 3A is formed at a position between the portions that support the left and right thighs of the seated occupant on the seat pad 3. Therefore, the pad through-hole 3A is configured to be difficult to be crushed even when a seating load is applied to the seat pad 3.

[0034] Since the pad through-hole 3A is formed in a shape that obliquely extends downward and forward as described above, the wire harness 5A is guided along the guide surface A1, which is the inner peripheral surface of the pad through-hole 3A, so as to extend downward and forward. Thereby, the wire harness 5A is drawn out from the frame through-hole F1 so as to extend in the seat front direction on the back side of the frame of the panel frame 2F.

[0035] As shown in Fig. 1, the wire harness 5A is drawn out so as to extend forward in the seat direction from the frame through-hole F1, and at its tip, it is bent in the seat width direction (left side) and routed so as to extend rearward in the seat direction along the left side frame 2A. Then, the wire harness 5A has a portion that is curved leftward while passing through the back side of the frame of the panel frame 2F, and is clamped by a bracket BR coupled to the back surface of the frame of the panel frame 2F by a clip CL.

[0036] Thereby, although the wire harness 5A is guided to extend in the forward downward direction along the guide surface A1 of the pad through-hole 3A described above in Fig. 4, at the tip after coming out of the frame through-hole F1, it is subjected to a force that bends upward toward the panel frame 2F due to the clamping of the clip CL. Due to this clamping, the routing path of the wire harness 5A is fixed so as not to be wobbly.

[0037] However, if the wire harness 5A happens to come into contact with the front edge portion F2 of the frame through-hole F1 along with the above clamping, there is a risk of problems due to rubbing against the front edge portion F2. Therefore, in order to prevent this rubbing, the seat pad 3 is formed with a harness protection portion 3B that bulges into the hole of the frame through-hole F1 so as to protect the wire harness 5A from contact with the front edge portion F2 of the frame through-hole F1.

[0038] Specifically, the harness protection portion 3B is formed at a portion along the front edge of the pad through-hole 3A on the back surface of the seat pad 3. More specifically, the harness protection portion 3B is formed so as to bulge toward the back side of the pad from a portion spaced rearward in the seat direction from the front edge portion F2 of the frame through-hole F1 of the seat pad 3.

[0039] The harness protection part 3B has a shape that bulges in a cross-sectional mountain shape (mountain shape in side view) so as to penetrate the frame through-hole F1 from the back surface of the pad of the seat pad 3 to the back side of the frame. Thereby, the harness protection part 3B is configured to have inclined surfaces B1 and B2 that are slopes of the mountain on its front and back surfaces. The inclined surface B2 on the rear side of the harness protection part 3B forms a surface that extends flush with the front surface of the guide surface A1 that extends in a forwardly downward direction of the pad through-hole 3A.

[0040] The inclined surface B1 on the front side of the harness protection part 3B is shaped to extend obliquely away in the seat rear direction from a site spaced rearward of the seat from the front edge F2 of the frame through-hole F1 of the seat pad 3. Thereby, the rounded portion B3 that is formed at the corner of the base end of the inclined surface B1 on the front side of the harness protection part 3B as it is molded to bulge from the seat pad 3 does not come into contact with the front edge F2 of the frame through-hole F1.

[0041] The front edge F2 of the frame through-hole F1 is bent so as to be obliquely bent to the back side of the frame of the panel frame 2F. Thereby, it is possible to appropriately prevent the back surface of the pad of the seat pad 3 from coming into contact with and rubbing against the front edge F2 of the frame through-hole F1. The harness protection part 3B bulges so as to protrude to the back side of the frame more than the front edge F2 bent to the back side of the frame.

[0042] Since such a harness protection part 3B bulges into the hole of the frame through-hole F1 from the back surface of the pad of the seat pad 3, the wire harness 5A passed through the frame through-hole F1 can be protected by the harness protection part 3B from contact with the front edge F2 of the frame through-hole F1.

[0043] As shown in FIG. 2, the harness protection portion 3B is shaped to bulge in a trapezoidal shape in a front view such that the bottom surface of its bulged tip extends flat in the seat width direction. The harness protection portion 3B is configured such that by applying the wire harness 5A to its flatly extending bottom surface and the above-described rear inclined surface B2 (see FIG. 4), the wire harness 5A can be locked in a fixed position so as not to be displaced in the seat width direction.

[0044] As shown in FIG. 3, the pad through-hole 3A is provided such that the left and right side surfaces of its guide surface A1 extending downward and forward are located inside the hole, that is, inside in the seat width direction, rather than the left and right side edges of the frame through-hole F1. Therefore, the left and right movement of the wire harness 5A is restricted by contact with the left and right side surfaces of the pad through-hole 3A so as not to contact the left and right side edges of the frame through-hole F1.

[0045] As shown in FIG. 4, the wire harness 5A is routed so as to pass through the frame through-hole F1 obliquely downward and forward of the seat by being guided by the guide surface A1 of the pad through-hole 3A extending downward and forward as described above. Thereby, even when the seat pad 3 is crushed by sitting on the seat cushion 1, the wire harness 5A is not greatly pushed out to the back side of the frame but is pushed out in the seat front direction along the panel frame 2F. Thereby, it is possible to make it difficult for the wire harness 5A to interfere with the peripheral components immediately below the panel frame 2F.

[0046] Summarizing the above, the seat S according to the present embodiment is configured as follows. In the following, the reference numerals in parentheses correspond to the respective configurations shown in the above embodiment.

[0047] That is, the seat (S) has a seat pad (3) and a planar panel frame (2F) that supports the seat pad (3) from the back side of the pad. The panel frame (2F) has a frame through hole (F1) through which a wire harness (5A) can pass in a direction perpendicular to the plane. The seat pad (3) has a harness protection portion (3B) that bulges into the hole of the frame through hole (F1) so as to protect the wire harness (5A) from contact with the peripheral edge portion (F2) of the frame through hole (F1).

[0048] According to the above configuration, the harness protection portion (3B) that bulges into the hole of the frame through hole (F1) from the seat pad (3) can reasonably protect the wire harness (5A) passing through the frame through hole (F1) from contact with the peripheral edge portion (F2) of the frame through hole (F1).

[0049] Further, the seat pad (3) has a pad through hole (3A) that communicates with the frame through hole (F1) and through which the wire harness (5A) can pass in the pad thickness direction that is the above-mentioned direction perpendicular to the plane. The pad through hole (3A) has a guide surface (A1) that guides the wire harness (5A) to be routed in a direction extending in the first direction (front direction of the seat) along the panel frame (2F) from the frame through hole (F1) on the back side of the frame. The harness protection portion (3B) protects the wire harness (5A) from contact with the edge portion (F2) of the peripheral edge portion (F2) of the frame through hole (F1) in the first direction (front direction of the seat).

[0050] According to the above configuration, the guide surface (A1) of the pad through hole (3A) can make it difficult for the wire harness (5A) to come into contact with the edge portions other than the peripheral edge portion (F2) in the first direction (front direction of the seat) of the frame through hole (F1). Moreover, the harness protection portion (3B) can protect the wire harness (5A) from contact with the peripheral edge portion (F2) in the first direction (front direction of the seat) of the frame through hole (F1). Therefore, the size required for the harness protection portion (3B) can be suppressed, and the wire harness (5A) can be protected more reasonably.

[0051] Further, the seat pad (3) and the panel frame (2F) are configured as components of the seat cushion (1). The pad through-hole (3A) guides the wire harness (5A) to be routed in a direction that obliquely extends downward and forward along the guide surface (A1). The first direction (seat forward direction) is defined as the seat forward direction.

[0052] According to the above configuration, even if the seat pad (3) is crushed by sitting on the seat cushion (1), the wire harness (5A) can be bent so as to be pushed out in the seat forward direction along the panel frame (2F) without being greatly pushed out to the back side of the frame. Thereby, it is possible to make it difficult for the wire harness (5A) to interfere with the peripheral components directly below the seat (S). And the wire harness (5A) routed to extend along the panel frame (2F) in this way can be appropriately protected by the harness protection part (3B) from contact with the peripheral part (F2) of the frame through-hole (F1).

[0053] Also, the harness protection part (3B) of the seat pad (3) is arranged at a position away from the peripheral part (F2) of the frame through-hole (F1) toward the inside of the hole. According to the above configuration, it is possible to make it difficult for the harness protection part (3B) to contact the peripheral part (F2) of the frame through-hole (F1). In particular, it is possible to make it difficult for the roundness (B3) formed at the corner of the base end by molding the harness protection part (3B) to bulge from the seat pad (3) to contact the peripheral part (F2) of the frame through-hole (F1).

[0054] Also, the peripheral part (F2) of the frame through-hole (F1) bends in a bent shape from the panel frame (2F) to the back side of the frame. The harness protection part (3B) of the seat pad (3) bulges to the back side of the frame more than the peripheral part (F2) of the frame through-hole (F1). According to the above configuration, it is possible to appropriately prevent the back surface of the pad of the seat pad (3) from contacting and rubbing against the peripheral part (F2) of the frame through-hole (F1). And the wire harness (5A) can be more appropriately protected by the harness protection part (3B) that bulges to the back side of the frame more than the peripheral part (F2) of the frame through-hole (F1).

[0055] "Regarding Other Embodiments" As described above, the embodiments of the present invention have been described using one embodiment. However, the present invention can be implemented in various forms in addition to the above embodiments.

[0056] 1. The seat of the present invention may be mounted not only on vehicles such as automobiles and railways but also on vehicles other than vehicles such as airplanes and ships. Further, the seat may be installed not only in vehicles but also in various facilities such as sports facilities, theaters, concert halls, and event venues.

[0057] 2. The seat pad and the panel frame may be applied not only to the seat cushion but also to the seat back. The panel frame in which the frame through hole is formed may be constituted by the side frame of the seat back that supports the top plate portion of the seat pad from the back side of the pad and the lower arm of the seat cushion that supports the gusset portion of the seat pad from the back side of the pad. Further, the panel frame may be constituted by the upper frame of the seat back and the front panel of the seat cushion.

[0058] 3. The wire harness does not necessarily have to be configured to pass through the pad through hole. That is, the wire harness may be routed so as to pass between the seat pad and the panel frame and extend along the panel frame and then pass through the frame through hole. The first direction in which the wire harness extends along the panel frame from the frame through hole on the back side of the frame may be any direction along the panel frame and is not limited to a specific direction.

[0059] 4. The hole shape of the frame through-hole and / or the pad through-hole may be other than a rectangular hole, such as a round hole, a corner hole other than a rectangle, or other irregular hole shapes. The harness protection part may bulge such that the bottom surface of the bulged tip extends flat in the sheet width direction, or may bulge such that the bottom surface of the bulged tip forms a wavy or concave curved surface. With a configuration including such a concave shape, the wire harness can be held by the harness protection part so as to be less likely to wobble.

[0060] 5. The peripheral edge of the frame through-hole may be formed to bend obliquely to the back side of the frame, or may be formed to bend at a right angle to the back side of the frame by burring. Also, the peripheral edge of the frame through-hole does not necessarily have to bend in a bent shape to the back side of the frame.

Explanation of Signs

[0061] 1 Seat cushion 2 Seat frame 2A Side frame 2B Front pipe 2C Rear pipe 2D Front rod 2E Rear rod 2F Panel frame F1 Frame through-hole F2 Front edge (peripheral edge) 3 Seat pad 3A Pad through-hole A1 Guide surface 3B Harness protection part B1 Inclined surface B2 Inclined surface B3 Radius 4 Seat cover 5 Seating sensor 5A Wire harness S Seat CL Clip BR Bracket

Claims

1. A seat having a seat pad and a planar panel frame that supports the seat pad from a back side of the pad, the panel frame has a frame through hole through which a wire harness can be passed in a direction perpendicular to the surface, The seat pad has a harness protection portion that bulges into the frame through-hole to protect the wire harness from contact with the peripheral portion of the frame through-hole.

2. The sheet according to claim 1, the seat pad has a pad through-hole communicating with the frame through-hole and allowing the wire harness to pass through in a pad thickness direction perpendicular to the surface, the pad through-hole has a guide surface that guides the wire harness so as to be arranged on a rear side of the frame in a direction extending from the frame through-hole in a first direction along the panel frame, The harness protection portion is a sheet that protects the wire harness from contact with an edge portion in the first direction that is the peripheral portion of the frame through-hole.

3. The sheet according to claim 2, The seat pad and the panel frame are components of a seat cushion, The pad through hole guides the wire harness so that it extends obliquely downward toward the front by the guide surface, and the first direction is a seat front direction.

4. The sheet according to any one of claims 1 to 3, A seat in which the harness protection portion of the seat pad is disposed at a position away from the peripheral portion of the frame through-hole toward the inside of the hole.

5. The sheet according to any one of claims 1 to 3, The peripheral portion of the frame through-hole is bent from the panel frame to the rear side of the frame, A seat in which the harness protection portion of the seat pad bulges out toward the rear side of the frame beyond the peripheral portion of the frame through-hole.

Images