JP7558865B2 - Harness connector and harness routing structure - Google Patents

Description

The present invention relates to a harness routing structure for a structure in which a movable portion is tiltable with respect to a fixed portion , and a harness connector used in the harness routing structure .

There have been structures in the past in which a movable part can be tilted relative to a fixed part, and electrical equipment is incorporated into the movable part (see Patent Documents 1 and 2). Power is supplied to the electrical equipment via a harness that extends from the fixed part to the movable part.

In such a structure, when the movable part is tilted relative to the fixed part, the curved shape of the harness changes. Therefore, a certain amount of slack is provided in the curved part of the harness so that the harness can follow the tilting movement of the movable part appropriately. Thus, there has been a demand for a harness routing structure and a harness connector for use in the harness routing structure in which the slack part of the harness extending from the fixed part to the movable part is not caught or twisted.

JP 2011-142727 A JP 2010-6179 A

The present invention aims to provide a harness routing structure in which the excess portion of the harness extending from a fixed part to a movable part does not get caught or twisted, and a harness connector for use in the harness routing structure .

This invention is a harness connector that connects a fixed side harness that is routed to a fixed part in a harness routing structure of a structure in which a movable part is tiltable around a tilt axis relative to a fixed part, and a movable side harness that is routed to the movable part, the harness connector having a fixed side connection part connected to the fixed side harness, a movable side connection part connected to the movable side harness, an intermediate harness that conductively connects the fixed side connection part and the movable side connection part, and a rotating support part that rotatably supports at least one of the fixed side connection part and the movable side connection part , the rotating support part having a support axis parallel to the tilt axis and having a rotating arm rotatably supported by the support axis, one of the fixed side connection part and the movable side connection part is fixed to the rotating arm, and the intermediate harness is routed through an outer route that is opposite to one of the fixed side connection part and the movable side connection part fixed to the rotating arm with respect to the support axis .

The structure in this invention includes not only a seat with a seat back that can be tilted relative to the seat cushion, and a seat with an ottoman that can be tilted relative to the seat cushion, but also a glove box or console box in a moving vehicle. In this way, a structure in this invention can be said to be one in which one component can be tilted relative to the other. Therefore, based on the relationship between the two components, one component is represented as a fixed part and the other component is represented as a movable part. Therefore, the fixed part does not mean that its position or posture is unchanging, but simply means that it is a pair of movable parts that can be tilted. Therefore, for example, when the structure is a seat, the seat cushion, which is the fixed part, may slide back and forth.

The outer path that is opposite one of the fixed side connection part and the movable side connection part fixed to the rotating arm with respect to the support shaft mentioned above means the path that goes around the support shaft, of the two paths connecting the fixed side connection part and the movable side connection part.

According to this invention, the excess length of the harness extending from the fixed part to the movable part can be prevented from being caught or twisted.
More specifically, the harness connecting body according to the present invention connects a fixed side harness and a movable side harness . The harness connecting body has a fixed side connection part connected to the fixed side harness, a movable side connection part connected to the movable side harness, an intermediate harness that electrically connects the fixed side connection part and the movable side connection part, and a rotating fixed part that rotatably supports at least one of the fixed side connection part and the movable side connection part. Therefore, at least one of the fixed side connection part and the movable side connection part can be rotated in response to the tilting action of the movable part. Therefore, the fixed part side end and the movable part side end of the curved part can be supported at a position suitable for the curved shape of the intermediate harness. In other words, the excess part of the harness extended from the fixed part to the movable part can be guided to prevent the excess part from getting caught or twisted.

In addition , the rotating support portion has a support axis parallel to the tilt axis, and the intermediate harness is arranged through an outer route that is opposite to either the fixed side connection portion or the movable side connection portion fixed to the rotating arm, relative to the support axis .

Therefore , when the movable part tilts to one side and the excess length of the intermediate harness decreases, the curved portion of the intermediate harness may abut against the outer circumferential surface of the support shaft. If the curved portion of the intermediate harness abuts against the outer circumferential surface of the support shaft, the curved portion of the intermediate harness is not bent locally but is bent back along the outer circumferential surface of the support shaft, so that it is possible to prevent the load (bending stress) from concentrating on a part of the intermediate harness. Furthermore, when the movable part tilts to the other side and the excess length of the intermediate harness increases, the curved portion of the intermediate harness moves away from the support shaft. Therefore, the curved portion of the intermediate harness does not abut against the support shaft and is maintained in a natural arc shape, so that it is possible to prevent the load (bending stress) from concentrating on a part of the intermediate harness.

The rotation support portion has a rotation arm that is rotatably supported by the support shaft, and either the fixed side connection portion or the movable side connection portion is fixed to the rotation arm.

Therefore, regardless of the direction in which the movable part is tilted, the longitudinal positional relationship between the connection part (either the fixed side connection part or the movable side connection part) fixed to the rotating arm and the harness (the fixed side harness or the movable side harness) connected to this connection part does not change. Therefore, even if the slack of the middle harness decreases, the harness connected to the connection part is not pulled. Conversely, even if the slack of the middle harness increases, the harness connected to the connection part does not slacken.

In another aspect of the present invention, the harness connector may have a pair of side walls disposed on both lateral sides of the fixed side connection part and the movable side connection part, and the intermediate harness may be routed between the pair of side walls.

With this invention, both lateral sides of the fixed connection part and the movable connection part, as well as both lateral sides of the middle harness, are covered by a pair of lateral walls. Therefore, when the curved shape of the middle harness changes due to tilting of the movable part, the middle harness can be guided so as not to shift to the lateral side. It is also possible to prevent dust and dirt from entering from the lateral side of the harness connector, and water droplets from entering. Furthermore, it is possible to prevent the middle harness from being exposed, thereby preventing the aesthetic appearance from being marred. Furthermore, it is possible to prevent users, etc. from touching the middle harness from the lateral side.

In another aspect of the invention, the harness connector may have a shielding portion that covers the opening formed by the pair of side walls, and the shielding portion may deform or slide in response to rotation of the fixed side connection portion or the movable side connection portion.

With this invention, the opening formed by the pair of side wall portions is covered by the shielding portion. Therefore, it is possible to prevent dust and dirt from entering through the opening, and water droplets from seeping in. In addition, since the shielding portion deforms or slides in response to the rotation of the fixed side connection portion or the movable side connection portion, it is possible to prevent dust and dirt from entering through the opening, and water droplets from seeping in, regardless of the rotation position. Furthermore, it is possible to prevent the middle harness from being exposed, thereby preventing the aesthetic appearance from being damaged. Furthermore, it is possible to prevent the user, etc. from touching the middle harness through the opening.

As a further aspect of the present invention, the fixed side harness and the movable side harness may be constituted by a plurality of electric wires.
The electric wire in the present invention is a concept including not only a general electric wire having a round cross section, but also all kinds of electric wires such as so-called ribbon electric wires and flexible flat cables.

This invention allows greater freedom in the electric wires that make up the fixed harness and the movable harness. This improves productivity. In addition, since the type of electric wire is not important, it is also possible to reduce costs depending on the selection.

As a further aspect of the present invention, the intermediate harness may be formed of a plurality of electric wires arranged in a flat shape or an electric wire integrated in a flat shape.
The electric wire in the present invention is a concept that includes not only an electric wire having a general circular cross section, but also all kinds of electric wires such as so-called ribbon electric wires and flexible flat cables.

This invention makes it possible to minimize the difference in circumference between the wires passing through the inner side of the curved portion of the intermediate harness and the wires passing through the outer side. This prevents the wires from being pulled or loosened, causing loads (tensile stress or compressive stress) to be applied.

As a further aspect of the present invention, the fixed connection portion and the movable connection portion may be plug-in connectors.
In the present invention, the plug-in connector refers to a connector that is fitted to a mating connector by being inserted into the mating connector, and that electrically connects electric wires to each other.

This invention makes it possible to easily connect the fixed side harness and the intermediate harness, as well as the movable side harness and the intermediate harness, when attaching the movable part to the fixed part in the assembly process of this structure. This can therefore improve productivity.

As another aspect of the present invention, the fixed portion may be a seat cushion, the movable portion may be a seat back, and the structure may be a seat in which the seat back is tiltable relative to the seat cushion.
In the present invention, the term "seat" refers to a concept that includes not only vehicle seats but also all kinds of seats such as so-called massage seats.

This invention can achieve the same effect as described above for the seat. For example, it can guide the excess length of the harness that extends from the fixed part, the seat cushion, to the movable part, the seat back, preventing the excess length from getting caught or twisted.

This invention prevents the excess length of the harness that extends from the fixed part to the movable part from getting caught or twisted.

FIG. 1 is a perspective view showing a vehicle seat. FIG. 2 is a perspective view showing an internal structure of a vehicle seat. FIG. FIG. 4 is a perspective view showing the internal structure of the harness connecting body. FIG. 4 is a side view showing the internal structure of the harness connector. 11 is an explanatory diagram showing an operation mode of the harness connector when the seat back is tilted forward. FIG. 11 is an explanatory diagram showing an operation mode of the harness connector when the seat back is tilted backward. FIG. FIG. 11 is a side view showing an internal structure of a harness connector according to another embodiment. FIG. 11 is a side view showing an internal structure of a harness connector according to another embodiment. FIG. 11 is a side view showing an internal structure of a harness connector according to another embodiment.

An embodiment of the present invention will now be described in detail with reference to the drawings.
In the present application, all the drawings indicate the directions of the vehicle seat 1. Specifically, the arrow F indicates the forward side, the arrow B indicates the rearward side, the arrow R indicates the rightward side, and the arrow L indicates the leftward side. The arrow U indicates the upward side, and the arrow D indicates the downward side.

Figure 1 is a perspective view of a vehicle seat 1, and Figure 2 is a perspective view showing the internal structure of the vehicle seat 1. Also, Figure 3 is a perspective view of a harness connector 9, Figure 4 is a perspective view showing the internal structure of the harness connector 9, and Figure 5 is a side view showing the internal structure of the harness connector 9. Furthermore, Figure 6 is an explanatory diagram showing the operation of the harness connector 9 when the seat back 3 reclines forward, and Figure 7 is an explanatory diagram showing the operation of the harness connector 9 when the seat back 3 reclines rearward.

As shown in FIG. 1, the vehicle seat 1 has a seat cushion 2 that supports the buttocks of the occupant, a seat back 3 that supports the back of the occupant, and a headrest 4 that supports the head of the occupant.

As shown in FIG. 2, the seat cushion 2 includes a cushion frame 20 therein. The seat back 3 includes a back frame 30 therein. The cushion frame 20 and the back frame 30 will be described below. After that, the harness wiring structure 6 that supplies power to electrical equipment (such as a heater) (not shown) attached to the back frame 30 will be described.

The cushion frame 20 has a pair of side frames 21, a front pipe 22 that connects the pair of side frames 21, and a rear pipe 23 that connects the pair of side frames 21. The cushion frame 20 also has cushion springs 24 that support urethane foam (not shown) and exert a resilient force.

A roughly semicircular seat back support portion 211 is formed at the rear end of each side frame 21. A tilt shaft 25 is fixed to the center of the seat back support portion 211, protruding toward the opposing seat back support portion 211.

The back frame 30 has a pair of side frames 31, a lower pipe 32 that connects the pair of side frames 31, and an upper pipe 33 that connects the pair of side frames 31. The back frame 30 also has a cushion spring 34 that supports urethane foam (not shown) and exerts a resilient force.

A roughly semicircular seatback connection part 311 is formed at the lower end of each side frame 31. A through hole of an appropriate size is provided in the center of the seatback connection part 311, and the tilt shaft 25 described above is inserted through this through hole.

This configuration allows the seat back 3 to be tilted relative to the seat cushion 2 (see arrow R in FIG. 1). That is, the back frame 30 can be tilted forward around the tilt axis 25 (see arrow R in FIG. 2). Also, the back frame 30 can be tilted backward around the tilt axis 25 (see arrow R in FIG. 2).

As shown in Figures 3 to 5, the harness arrangement structure 6 has a cushion side harness 7 arranged inside the seat cushion 2, a back side harness 8 arranged inside the seat back 3, and a harness connector 9 that connects the cushion side harness 7 and the back side harness 8. The harness connector 9 is arranged inside the cushion frame 20, but may be arranged outside the cushion frame 20.

The cushion side harness 7 is composed of multiple electric wires 70. The cushion side harness 7 is connected to a power source (battery, etc.) (not shown) at its tip, and a connector 71 is attached to its rear end. The back side harness 8 is also composed of multiple electric wires 80. The back side harness 8 is connected to a connector 82 at its tip, and an electrical device (heater, etc.) (not shown) is connected to its rear end.

The harness connecting body 9 has a connecting connector 91, a connecting connector 92, and an intermediate harness 93 that electrically connects the connecting connectors 91 and 92. The harness connecting body 9 also has a pivoting support part 94 that rotatably supports the connecting connector 92. The harness connecting body 9 has a structure in which the support shaft 941 of the pivoting support part 94 is inserted into the rear pipe 23, but is not limited to such a structure. Each of the components that make up the harness connecting body 9 will be described in detail below.

The connection connector 91 is connected to the connection connector 71 of the cushion side harness 7. The connection connector 91 has a housing 911 that holds connection terminals attached to each electric wire (flexible flat cable 930 described later), and this housing 911 is inserted into the housing 711 of the connection connector 71 to fit. Then, when the housing 911 and the housing 711 are properly fitted together, each electric wire of the intermediate harness 93 (here, the flexible flat cable 930) is electrically connected to each electric wire 70 of the cushion side harness 7. In this way, the connection connector 91 is connected to the cushion side harness 7.

The connection connector 92 is connected to the connection connector 82 of the rear harness 8. The connection connector 92 has a housing 921 that holds connection terminals attached to each electric wire (flexible flat cable 930, described later), and this housing 921 is inserted into the housing 821 of the connection connector 82 to fit. When the housing 921 and the housing 821 are properly fitted together, each electric wire of the intermediate harness 93 (here, the flexible flat cable 930) is electrically connected to each electric wire 80 of the rear harness 8. In this way, the connection connector 92 is connected to the rear harness 8.

The intermediate harness 93 is made up of multiple overlapping flexible flat cables 930. The flexible flat cable 930 is structured with parallel-arranged strip-shaped conductors sandwiched between sheet-shaped insulators. When the aforementioned connector 91 is connected to the cushion side harness 7 and the aforementioned connector 92 is connected to the back side harness 8, these harnesses (cushion side harness 7, back side harness 8, and intermediate harness 93) function as a single harness. The flexible flat cable 930 is thin and can be bent freely, so it is used in parts where the curved shape changes repeatedly.

The pivot support 94 rotatably supports the connector 92. The pivot support 94 has a support shaft 941 parallel to the tilt axis 25 and a pivot arm 942 pivotally supported by the support shaft 941. The support shaft 941 is formed in a cylindrical shape, and the pivot arm 942 is composed of a tube 942a fitted onto the support shaft 941 and an arm 942b welded to the outer circumferential surface of the tube 942a. The outer circumferential surface of the tube 942a on the opposite side to the portion to which the arm 942b is welded is an arc surface with a radius larger than the allowable bending radius of the flexible flat cable 930. The arm 942b may be biased in a direction to fall forward or backward.

In addition, the harness connector 9 has a pair of side walls 95 that support both ends of the support shaft 941 and cover the left and right sides of the connectors 91 and 92. Each side wall 95 is supported in parallel by a bottom plate 96 that is perpendicular to the up-down direction, a front wall 97 that is perpendicular to the front-rear direction, and a rear wall 98 that is also perpendicular to the front-rear direction. The upper end of each side wall 95 is formed in an arc shape when viewed from the left or right side, and these side walls 95 form an arc-shaped opening 95o. The opening 95o is covered by a shielding portion 99 that is arranged along the opening edge. The shielding portion 99 will be described later.

The connector 91 is fixed to the front end of the bottom plate 96, and the open end of the housing 911 protrudes forward from the front wall 97. The connector 92 is fixed to the tip of the pivot arm 942, and the open end of the housing 921 protrudes upward from the shielding portion 99. Therefore, the connector 91 maintains its position and direction regardless of the tilting of the seat back 3, but the connector 92 rotates to an appropriate position and direction due to the pulling force of the back harness 8 (see arrow R in Figures 5 and 6). At this time, the shielding portion 99 slides along with the connector 92 (see arrow S in Figures 5 and 6).

Furthermore, the intermediate harness 93 described above is routed between the pair of side wall portions 95. The intermediate harness 93 is also routed through a path around the support shaft 941. In other words, the intermediate harness 93 is routed through the path r2 that goes around the support shaft 941, of the two paths r1 and r2 that connect the connecting connector 91 and the connecting connector 92. If the intermediate harness 93 is routed through path r1, there is a risk that the intermediate harness 93 will be locally bent when the seat back 3 is tilted forward, or that the intermediate harness 93 will come into contact with the tubular portion 942a of the rotating arm 942 when the seat back 3 is tilted backward, resulting in a distorted shape. The intermediate harness 93 is long enough that when the seat back 3 is tilted forward, the curved portion of the intermediate harness 93 is lightly wrapped around the tubular portion 942a of the pivot arm 942 (see FIG. 6(b)), and when the seat back 3 is tilted backward, the curved portion of the intermediate harness 93 is long enough that it does not come into contact with the bottom plate portion 96 or the rear wall portion 98 (see FIG. 7(b)).

Next, the operation of the harness connector 9 when the seat back 3 is tilted forward will be described in detail with reference to Figure 6. Figure 6(a) shows the state before the seat back 3 is tilted forward, and Figure 6(b) shows the state after the seat back 3 has been tilted forward.

When the seat back 3 is in an upright position, the connector 92 is located above the support shaft 941 (see FIG. 6(a)). When the seat back 3 is then tilted forward, the connector 92 is pulled by the back harness 8 and rotated forward from its initial position (see FIG. 6(b)). At this time, the intermediate harness 93 loses excess length at its curved portion, but is not locally bent and is bent back along the arc surface of the tube portion 942a fitted onto the support shaft 941 (see the two-dot chain line L in FIG. 6(b)).

The shielding portion 99 has a structure in which plate portions formed in the shape of long strips in the left-right direction are connected by a freely rotatable connecting portion, and the portion of the shielding portion 99 forward of the connecting connector 92 is pushed by the connecting connector 92 and slides along the guide plate 95a provided on the side wall portion 95. Conversely, the portion of the shielding portion 99 rearward of the connecting connector 92 is pulled by the connecting connector 92 and also slides along the guide plate 95a. Therefore, the shielding portion 99 can cover the opening 95o even if the connecting connector 92 rotates forward.

Next, the operation of the harness connector 9 when the seat back 3 is tilted backward will be described in detail with reference to Figure 7. Figure 7(a) shows the state before the seat back 3 is tilted backward, and Figure 7(b) shows the state after the seat back 3 has been tilted backward.

When the seat back 3 is in an upright position, the connector 92 is located above the support shaft 941 (see FIG. 7(a)). When the seat back 3 is then tilted backward, the connector 92 is pulled by the back harness 8 and rotated backward from its initial position (see FIG. 7(b)). At this time, the intermediate harness 93 has an increased excess length at its curved portion, but is maintained in a natural arc shape because it moves away from the support shaft 941 (see the two-dot chain line L in FIG. 7(b)).

The shielding portion 99 has a structure in which plate portions formed in the shape of long strips in the left-right direction are connected by a freely rotatable connecting portion, and the portion of the shielding portion 99 in front of the connecting connector 92 is pulled by the connecting connector 92 and slides along the guide plate 95a provided on the side wall portion 95. Conversely, the portion of the shielding portion 99 behind the connecting connector 92 is pushed by the connecting connector 92 and also slides along the guide plate 95a. Therefore, the shielding portion 99 can cover the opening 95o even if the connecting connector 92 rotates rearward.

As described above, the harness arrangement structure 6 of the vehicle seat 1 in which the seat back 3 can be tilted relative to the seat cushion 2 includes the cushion side harness 7 arranged on the seat cushion 2, the back side harness 8 arranged on the seat back 3, and the harness connector 9 that connects the cushion side harness 7 and the back side harness 8. The harness connector 9 is characterized by having a connection connector 91 connected to the cushion side harness 7, a connection connector 92 connected to the back side harness 8, an intermediate harness 93 that electrically connects the connection connector 91 and the connection connector 92, and a rotation support part 94 that rotatably supports the connection connector 92.

According to such a harness routing structure 6, the excess portion of the harness extending from the seat cushion 2 to the seat back 3 (the curved portion of the intermediate harness 93) can be prevented from being caught or twisted.
More specifically, the harness arrangement structure 6 according to the present invention includes a harness connecting body 9 that connects the cushion side harness 7 and the back side harness 8. The harness connecting body 9 includes a connector 91 that is connected to the cushion side harness 7, a connector 92 that is connected to the back side harness 8, an intermediate harness 93 that electrically connects the connector 91 and the connector 92, and a rotation support portion 94 that rotatably supports the connector 92. Therefore, the connector 92 can be rotated in response to the tilting motion of the seat back 3. Therefore, the seat cushion side end and the seat back side end of the curved portion of the intermediate harness 93 can be supported at positions suitable for the curved shape of the intermediate harness 93. In other words, the harness can guide the excess portion of the harness (the curved portion of the intermediate harness 93) that extends from the seat cushion 2 to the seat back 3, preventing the excess portion from getting caught or twisted.

In addition, in this harness arrangement structure 6, the pivot support portion 94 has a support shaft 941 that is parallel to the tilt axis 25. The intermediate harness 93 is arranged through an outer route of the support shaft 941.

According to such a harness arrangement structure 6, when the seat back 3 is tilted forward and the excess length of the intermediate harness 93 is reduced, the curved portion of the intermediate harness 93 may abut against the outer circumferential surface of the support shaft 941. If the curved portion of the intermediate harness 93 abuts against the outer circumferential surface of the support shaft 941, the curved portion of the intermediate harness 93 is not locally bent but is bent back along the outer circumferential surface of the support shaft 941 (specifically, the cylindrical portion 942a), so that it is possible to prevent the load (bending stress) from concentrating on a part of the intermediate harness 93. Furthermore, when the seat back 3 is tilted backward and the excess length of the intermediate harness 93 increases, the curved portion of the intermediate harness 93 moves away from the support shaft 941 (specifically, the cylindrical portion 942a). Therefore, the curved portion of the intermediate harness 93 does not abut against the support shaft 941 (specifically, the cylindrical portion 942a) and is maintained in a natural arc shape, so that it is possible to prevent the load (bending stress) from concentrating on a part of the intermediate harness 93.

In addition, in this harness arrangement structure 6, the pivot support portion 94 has a pivot arm 942 that is pivotally supported by a support shaft 941. The connection connector 92 is fixed to the pivot arm 942.

With this harness routing structure 6, the longitudinal positional relationship between the connector 92 fixed to the pivot arm 942 and the back harness 8 connected to this connector 92 does not change, regardless of the direction in which the seat back 3 is tilted. Therefore, even if the excess length of the intermediate harness 93 decreases, the back harness 8 connected to the connector 92 is not pulled. Conversely, even if the excess length of the intermediate harness 93 increases, the back harness 8 connected to the connector 92 does not slacken.

In addition, in this harness arrangement structure 6, the harness connector 9 has a pair of side walls 95 arranged on both lateral sides of the connecting connector 91 and the connecting connector 92. The intermediate harness 93 is arranged between the pair of side walls 95.

According to this harness routing structure 6, both lateral sides of the connecting connectors 91 and 92 and both lateral sides of the intermediate harness 93 are covered by a pair of lateral wall portions 95. Therefore, when the curved shape of the intermediate harness 93 changes due to the tilting of the seat back 3, the intermediate harness 93 can be guided so as not to shift to the lateral side. It is also possible to prevent dust and dirt and water droplets from entering from both lateral sides of the harness connector 9. Furthermore, it is possible to prevent the intermediate harness 93 from being exposed, thereby preventing the aesthetic appearance from being damaged. Furthermore, it is possible to prevent the user, etc. from touching the intermediate harness 93 from the lateral side.

In addition, in this harness routing structure 6, the harness connector 9 has a shielding portion 99 that covers the opening 95o formed by the pair of side walls 95. The shielding portion 99 slides in response to the rotation of the connecting connector 92.

According to this harness routing structure 6, the opening 95o formed by the pair of side wall portions 95 is covered by the shielding portion 99. This prevents dust and dirt from entering through the opening 95o, and prevents water droplets from seeping in through the opening 95o. In addition, since the shielding portion 99 slides in response to the rotation of the connecting connector 92, dust and dirt from entering through the opening 95o, regardless of the rotation position. Furthermore, the middle harness 93 is prevented from being exposed, preventing the aesthetic appearance from being damaged. Furthermore, the user, etc., can be prevented from touching the middle harness 93 through the opening 95o.

In addition, in this harness arrangement structure 6, the cushion side harness 7 is composed of multiple electric wires 70, and the back side harness 8 is also composed of multiple electric wires 80.

This harness wiring structure 6 allows for greater freedom in the electric wires 70 that make up the cushion-side harness 7 and the electric wires 80 that make up the back-side harness 8. This improves productivity. In addition, since the types of electric wires 70 and 80 do not matter, it is also possible to reduce costs depending on the selection.

In addition, in this harness arrangement structure 6, the intermediate harness 93 is composed of a flat, integrated electric wire (flexible flat cable 930).

With this harness arrangement structure 6, the difference in circumferential length between the flexible flat cable 930 passing through the inner side of the curved portion of the intermediate harness 93 and the flexible flat cable 930 passing through the outer side can be kept small. This prevents the flexible flat cable 930 from being pulled or loosened, resulting in a load (tensile stress or compressive stress).

In addition, in this harness arrangement structure 6, the connection connector 91 and the connection connector 92 are plug-in connectors.

This harness routing structure 6 allows easy connection between the cushion side harness 7 and the intermediate harness 93, and between the back side harness 8 and the intermediate harness 93, when attaching the seat back 3 to the seat cushion 2 in the assembly process of the vehicle seat 1. This improves productivity.

Finally, this harness routing structure 6 can be used in other seats in which the seat back 3 can be tilted relative to the seat cushion 2.

This harness routing structure 6 can achieve the same effect as described above for other seats. For example, it can guide the excess portion of the harness that extends from the seat cushion 2 to the seat back 3 (the curved portion of the intermediate harness 93), preventing the excess portion from getting caught or twisted.

In the configuration of the present invention and the above-described embodiment, the structure of the present invention corresponds to a vehicle seat 1,
Similarly,
The fixing part corresponds to the seat cushion 2,
The movable part corresponds to the seat back 3,
The harness arrangement structure corresponds to the harness arrangement structure 6,
The fixed side harness corresponds to the cushion side harness 7.
The movable harness corresponds to the back harness 8.
The harness connector corresponds to the harness connector 9,
The tilt axis corresponds to the tilt axis 25,
The fixed connection portion corresponds to the connector 91.
The movable side connection portion corresponds to the connector 92,
The intermediate harness corresponds to the intermediate harness 93,
The pivot support portion corresponds to the pivot support portion 94.
The support shaft corresponds to the support shaft 941.
The pivot arm corresponds to pivot arm 942,
The side wall portion corresponds to the side wall portion 95,
The shielding portion corresponds to the shielding portion 99,
The electric wires correspond to the electric wires 70, 80, and 930, but the present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, the harness routing structure 6 according to this embodiment can rotate the connector 92 in response to the tilting movement of the seat back 3. However, as shown in FIG. 8, both the connector 91 and the connector 92 may be rotated. That is, two rotating arms 942 are provided, and the connector 91 is fixed to the tip of one, and the connector 92 is fixed to the tip of the other.

In addition, in the harness arrangement structure 6 according to this embodiment, the cushion side harness 7 is composed of multiple electric wires 70, the back side harness 8 is composed of multiple electric wires 80, and the intermediate harness 93 is composed of multiple flexible flat cables 930. However, as shown in FIG. 9, it may also include a tube T that sends air to the bag (bladder) of the seat cushion 2 or the seat back 3.

Furthermore, the harness arrangement structure 6 according to this embodiment has a structure in which the shielding portion 99 is a plate portion formed in a long rectangular shape in the left-right direction and connected by a rotatable connecting portion, and is configured to slide in response to the rotation of the connecting connector 92. However, as shown in FIG. 10, the shielding portion 99 may be made of a cloth material C or leather material that covers the opening 95o.

Finally, in this application, a harness arrangement structure 6 for a vehicle seat 1 in which the seat back 3 can be tilted relative to the seat cushion 2 has been described, but the technical concept of the present invention can also be applied to other structures. For example, it can be applied to a seat in which the ottoman can be tilted relative to the seat cushion. It can also be applied to a glove box or a console box.

DESCRIPTION OF SYMBOLS 1...vehicle seat 2...seat cushion 3...seat back 6...harness routing structure 7...cushion side harness 8...back side harness 9...harness connector 25...tilt shaft 91...connection connector 92...connection connector 93...middle harness 94...rotation support portion 941...support shaft 942...rotation arm 95...side wall portion 99...shielding portion 70...electric wire 80...electric wire 930...electric wire (flexible flat cable)

Claims (7)

A harness connector for connecting a fixed-side harness routed to a fixed part and a movable-side harness routed to the movable part in a harness routing structure of a structure in which a movable part is tiltable about a tilt axis with respect to a fixed part,
A fixed side connection portion connected to the fixed side harness;
A movable side connection portion connected to the movable side harness;
an intermediate harness that electrically connects the fixed side connection portion and the movable side connection portion;
a rotation support portion that rotatably supports at least one of the fixed side connection portion and the movable side connection portion ,
The rotation support portion is
A support shaft is parallel to the tilt shaft , and a rotating arm is supported by the support shaft so as to be rotatable.
one of the fixed side connection portion and the movable side connection portion is fixed to the rotating arm,
The intermediate harness is connected to the support shaft.
The wire is routed through an outer route opposite to one of the fixed side connection part and the movable side connection part fixed to the rotating arm.
Harness connector . The harness connector is
a pair of lateral wall portions disposed on both lateral sides of the fixed-side connection portion and the movable-side connection portion;
2. The harness connecting assembly according to claim 1, wherein the intermediate harness is routed between the pair of side walls. The harness connector is
a shielding portion for covering an opening formed by the pair of side wall portions;
3. The harness connecting body according to claim 2 , wherein the shielding portion deforms or slides in response to rotation of the fixed connection portion or the movable connection portion. 4. The harness connection body according to claim 1, wherein the fixed harness and the movable harness are constituted by a plurality of electric wires. 5. The harness connecting body according to claim 1 , wherein the intermediate harness is composed of a plurality of electric wires arranged in a flat shape or a flat integrated electric wire. 6. The harness connecting body according to claim 1 , wherein the fixed connecting portion and the movable connecting portion are plug-in connectors. A harness arrangement structure for a structure in which a movable part is tiltable relative to a fixed part,
A fixed side harness arranged on the fixed portion;
A movable side harness arranged on the movable part;
and a harness connecting body according to any one of claims 1 to 6 ,
The fixing portion is a seat cushion,
The movable part is a seat back,
The structure is a seat in which the seat back can be tilted relative to the seat cushion.

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