JP6461642B2 - Harness protection mechanism - Google Patents

Description

  The present invention relates to a harness protection mechanism that prevents a harness from being damaged when a vehicle seat moves back and forth on a seat rail.

  Conventionally, as a harness protection mechanism for preventing the harness from being damaged, a structure in which the harness is bent into a substantially J-shape or a substantially U-shape in the vehicle floor, or a surplus length absorption structure that absorbs the surplus length of the harness Is known (Patent Document 1). In addition, there is known a harness routing structure that accommodates a harness in a harness accommodating portion provided in a seat (Patent Document 2).

JP 2008-48524 A JP 2007-195308 A

However, in such a harness surplus length absorption structure and wiring structure, if the seat slide amount increases, the harness movement increases accordingly, and the harness lengthens, so the amount of slack increases and the harness moves. Since the trajectory is not stable, there is a problem that concerns such as disconnection, breakage, and biting of the harness increase.
Moreover, in the structure which bends a harness, there existed a problem that the bending durability of a harness fell, when it was made to curve in a substantially J shape or a substantially U shape because a harness became long. In addition, in the structure that accommodates the harness, the harness accommodating portion becomes large, and thus there is a problem that the harness cannot be disposed in the seat or the vehicle floor. Furthermore, when the harness housing portion has a housing structure, the structure becomes complicated, and there is a problem that the weight increases due to an increase in the number of parts.

  Accordingly, an object of the present invention is to solve the above-described problems of the extra harness absorption structure and wiring structure of the conventional harness, and even if the seat slide amount is increased, the harness movement path is stabilized, thereby causing disconnection and An object of the present invention is to provide a lightweight and compact harness protection mechanism that is free from damage, biting, etc., and does not reduce the bending durability of the harness, has a simple structure and requires a small number of parts.

Among the present inventions, the invention described in claim 1 is such that one end of the seat rail installed on the floor of the vehicle moves on the seat rail, and the other end connects to a slider that moves back and forth integrally with the seat. Is arranged so that the longitudinal direction and the moving direction of the sheet are parallel, a cable carrier that introduces a harness inside and protects the harness,
Is fixed to the floor, allowing the penetration of the cable carrier from the bottom, foreign matter is composed of at least a cover to prevent entering the cable carrier before penetration,
The cover includes a bracket attached on the floor, a cover frame provided with a long hole in the center, and an elastic film provided in the long hole and having a slit formed in the center through which the cable carrier can pass. Prepared,
The cover is attached to the side of the seat rail in parallel with the longitudinal direction of the seat rail,
The cable carrier is housed in a U-shape viewed from the side under the cover .

  According to a second aspect of the present invention, in addition to the first aspect of the invention, the cable carrier has a length that allows the slider to move forwardly by 300 mm or more and backward by 300 mm or more. It is what.

  According to the first aspect of the present invention, even if the seat slide amount is increased, the movement trajectory of the harness is stabilized, and there is no occurrence of disconnection, breakage, biting, etc., and the bending durability of the harness may be reduced. Absent. In addition, the structure is simple, the number of parts is small, and it is lightweight and compact. In addition, the structure is inconspicuous from the outside after installation, and the appearance is not impaired. Furthermore, it is easy to assemble and attach, contributing to cost reduction. In addition, since the cover is provided, the harness is protected even when the cable carrier is stepped on or a large load is applied from the outside.

  The invention described in claim 2 can cope with an increase in the slide amount of the sheet.

It is explanatory drawing which shows the state in which the harness protection mechanism was attached between the sheet | seat and the seat rail. It is explanatory drawing which shows a harness protection mechanism. (A) shows the state by which the harness was laid in the cable carrier, (b)-(d) is explanatory drawing which shows each cross section of (a) (a cover is abbreviate | omitted). It is explanatory drawing which shows the state which a sheet | seat moves back and forth on a seat rail (a cover is abbreviate | omitted). FIG. 5 is an explanatory diagram showing a state in which the slider moves back and forth on the seat rail in FIG. 4 (the cover is omitted). (A) (b) is explanatory drawing which shows the state of the harness protection mechanism in each position when a slider advances and retreats.

  Hereinafter, an embodiment of the harness protection mechanism of the present invention will be described in detail based on the drawings.

  FIG. 1 is an explanatory diagram illustrating a state in which a harness protection mechanism is attached between a seat and a seat rail. FIG. 2 is an explanatory view showing a harness protection mechanism. FIG. 3 is an explanatory view showing a state in which a harness is laid in the cable carrier. FIG. 4 is an explanatory view showing a state when the seat moves forward and backward on the seat rail. FIG. 5 is an explanatory diagram showing a state in which the slider moves back and forth on the seat rail in FIG. FIG. 6 is an explanatory diagram showing the state of the harness protection mechanism at each position when the slider moves forward and backward.

  First, as shown in FIG. 1, the harness protection mechanism 1 prevents damage and disconnection of the harness 40 between the seat rail 10 attached to the vehicle floor and the slider 12 that moves on the seat rail 10. Cable carrier 20 and a cover 30 that prevents foreign matter from entering the cable carrier 20.

As shown in FIG. 2, the cable carrier 20 has a protrusion provided on one end of both side surfaces of the link body 21 fitted in a hole provided on the other end portion of both side surfaces of the other link body 21. Thus, a plurality of link bodies 21, 21,... Are connected to form a chain, and flanges 22 and 23 are connected to both ends. In a state where the cable carrier 20 is folded sideways and formed into a folded U shape, the cable carrier 20 is installed so that the longitudinal direction of the cable carrier 20 and the movement direction of the sheet 50 are parallel to follow the movement of the sheet 50. is there.
In addition, each link body 21, 21... Has a structure in which a part of the body part is opened and closed by a flap 26.

  Next, the cover 30 is provided in the bracket 35 attached to the floor of the vehicle, the cover frame 31 that is horizontally supported at the upper end of the bracket 35 and has the long hole 32 in the center, and the long hole 32 of the cover frame 31. And the elastic film 33 for forming the slit 34, and the cable carrier 20 is configured to be able to pass through the slit 34 of the elastic film 33.

The harness protection mechanism 1 configured as described above is attached between the seat rail 10 and the slider 12 as follows.
First, as shown in FIG. 3 (a), the flaps 26, 26,... Provided on the trunks of the link bodies 21, 21,. .. Are closed in order and the link bodies 21, 21... Lay the harness 40 on the pipe. At this time, as shown in FIG. 3B, in the AA cross section of FIG. 3A, the harness 40 is laid in the link body 21, and as shown in FIG. In the BB cross section of (a), the harness 40 is laid in the upper flange 23 and the lower link body 21. In addition, as shown in FIG. 3 (d), the harness 40 is laid in the upper link body 21 and the lower link body 21 in the CC cross section of FIG. 3 (a). Yes.
Next, one flange 22 of the cable carrier 20 is attached to the fixing portion 11 of the seat rail 10. Then, the flange 23 is attached to the fixing portion 13 of the slider 12 with the cable carrier 20 passed through the slit 34 of the cover frame 31.
Thereafter, when the connector 24 of the harness 40 is connected to a connector (not shown) on the vehicle floor side and the connector 25 is connected to a connector (not shown) on the seat 50 side, the wiring connection between the seat 50 side and the vehicle side is completed.

4 and 5, when the sheet 50 moves forward (in the direction of the arrow of the sheet 50a), the cable carrier 20 is pulled out from the slit 34 of the cover frame 31 and attached to the sheet 50. Since the slider 12 moves forward, as shown in FIG. 6A, the connector 25 moves forward accordingly.
On the other hand, when the seat 50 moves backward (in the direction of the arrow of the seat 50b), the slider 12 on the seat rail 10 also moves backward, so that the link bodies 21, 21,... Are drawn into the slit 34 of the cover frame 31. As shown in FIG. 6B, the connector 25 attached to the fixed portion 13 is also retracted accordingly.
As the moving distance at this time, the forward movement can follow 300 mm or more, and the backward movement enables 300 mm or more, and the adjustment of the movement distance adds the number of link bodies 21 to be connected according to the movement distance of the seat 50. Or by removing.

  The harness protection mechanism 1 configured as described above has a longitudinal direction between the seat rail 10 installed on the floor of the vehicle and the slider 12 that moves on the seat rail 10 and moves back and forth integrally with the seat 50. The cable carrier 20 is installed so that the moving direction of the seat 50 is parallel, the harness 40 is introduced into the seat 50 to protect the harness 40, and the cable carrier 20 fixed on the floor penetrates the lower cable. By comprising at least a cover 30 that prevents foreign matter from entering the carrier 20, even if the sliding amount of the seat 50 increases, the movement trajectory of the harness 40 is stabilized, and disconnection, breakage, biting, etc. occur. And the bending durability of the harness 40 is not lowered. In addition, the structure is simple, the number of parts is small, and it is lightweight and compact. In addition, the structure is inconspicuous from the outside after installation, and the appearance is not impaired. Furthermore, it is easy to assemble and attach, contributing to cost reduction. In addition, since the cover 30 is provided, the harness 40 is protected even when the cable carrier 20 is stepped on or a large load is applied from the outside.

  In addition, the cable carrier 20 has a length that allows the slider to move by 300 mm or more in the forward direction and 300 mm or more in the backward direction, so that the slide amount of the sheet 50 can be increased.

  The harness protection mechanism according to the present invention is not limited to the above-described embodiment, and the shape and size of the link body and the flange may be changed as appropriate without departing from the spirit of the present invention. Can do.

  For example, the cable carrier 20 has a structure in which the link bodies 21, 21... Are connected and the flanges 22 and 23 are attached to both ends, but the link bodies 21 and 21 at both ends may be directly attached to the fixing portions 11 and 13. The structure can be appropriately changed as long as the harness 40 is protected by the cable carrier 20.

  Moreover, the flap 26 provided in the trunk | drum of the link body 21 may be slit shape other than a cover body, and can be changed suitably.

  In addition, after the harness 40 is introduced into the cable carrier 20 in a state where one or both of the connectors 24 and 25 are not assembled to the end of the harness 40 and laid in the cable carrier 20, the connectors 24 and 25 are installed. One or both of these may be assembled.

  1 .. Harness protection mechanism 10.. Seat rail 11.. Fixed part (seat rail side) 12.. Slider 13. Fixed part (slider side) 20.. Cable carrier 21. , 22 .. Flange (seat rail side), 23 .. Flange (slider side), 24 .. Connector (seat rail side), 25 .. Connector (slider side), 26 .. Flap, 30. · · Cover frame, 32 · · long hole, 33 · · elastic membrane, 34 · · slit, 35 · · bracket, 40 · · harness, 50 · · seat.

Claims (2)

One end of the seat rail installed on the floor of the vehicle moves on the seat rail, and the other end is connected to a slider that moves back and forth integrally with the seat, so that the longitudinal direction and the moving direction of the seat are parallel to each other. are arranged such, the cable carrier to protect the harness by introducing harness therein,
Is fixed to the floor, allowing the penetration of the cable carrier from the bottom, foreign matter is composed of at least a cover to prevent entering the cable carrier before penetration,
The cover includes a bracket attached on the floor, a cover frame provided with a long hole in the center, and an elastic film provided in the long hole and having a slit formed in the center through which the cable carrier can pass. Prepared,
The cover is attached to the side of the seat rail in parallel with the longitudinal direction of the seat rail,
The cable carrier is accommodated in a side Mi倒U-shape at the lower side of the cover harness protection mechanism according to claim Rukoto.   2. The harness protection mechanism according to claim 1, wherein the cable carrier has a length that allows the slider to move in a forward direction of 300 mm or more and in a backward direction of 300 mm or more.

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