JP2020078997A - Vehicular seat - Google Patents

Abstract

To enable completion of quality check on an electric circuit of a heater and an overcurrent protection member while a vehicular seat is in a single state (at being finished).SOLUTION: A vehicular seat includes: a seat body 20; a connection mechanism for connecting the seat body 20 to a floor part of a vehicle; and a heater 40 installed in the seat body 20 and driven by electric power supplied from a power supply that is used for driving the vehicle. An overcurrent protection member 47 is provided to an electric circuit of the heater 40 to protect the heater 40 by blocking an overcurrent. The overcurrent protection member 47 is fitted to the seat body 20.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat including a heater that operates with electric power supplied from a power source used to drive a vehicle.

  Patent Document 1 discloses a vehicle seat including a seat heater. In the vehicle seat, a vehicle battery is used as a power source for the seat heater. Therefore, the fuse for overcurrent protection of the seat heater in the vehicle seat is generally housed in a fuse holder below the instrument panel of the vehicle. That is, the fuse of the seat heater in the vehicle seat is mounted inside the vehicle away from the vehicle seat.

JP, 2013-115011, A

  For this reason, even if the quality of the electric circuit of the seat heater is checked when the vehicle seat is completed when the vehicle seat is completed, the vehicle seat and the fuse are installed after the vehicle seat is installed on the floor of the vehicle. Wiring check between holders is required.

  The present invention has been made in order to solve the above problems, and an object of the present invention is to solve the problem that an electric circuit of a heater and an overcurrent protection member (when completed) with a vehicle seat alone (when completed). Fuse quality check to be completed.

  The problems described above are solved by each invention. A first aspect of the present invention includes a seat body and a connecting mechanism that connects the seat body to a floor of a vehicle, and a heater that operates by electric power supplied from a power source used to drive the vehicle is provided in the seat body. A vehicle seat provided, wherein an electric circuit of the heater is provided with an overcurrent protection member that shuts off an overcurrent to protect the heater, and the overcurrent protection member is provided in the seat body. Installed.

  According to the present invention, since the overcurrent protection member is attached to the seat body, the quality of the electric circuit of the heater of the vehicle seat and the overcurrent protection member can be checked before installing the vehicle seat on the vehicle. Become so. For this reason, unlike the prior art, after installing the vehicle seat on the vehicle, it is not necessary to check the wiring between the vehicle seat and the overcurrent protection member. That is, the quality check of the electric circuit of the heater and the overcurrent protection member can be completed when the vehicle seat is completed.

  According to the second invention, the overcurrent protection member is attached to the seat body via the plate-shaped component. Therefore, for example, even when the overcurrent protection member is attached to the pad portion of the seat body, the overcurrent protection member can be attached in a stable state by the plate-shaped component.

  According to the third invention, the seat body includes a seat cushion and a seat back connected to a rear portion of the seat cushion in a vertically rotatable manner, and the overcurrent protection member is attached to the seat cushion. Has been. As described above, since the overcurrent protection member is attached to the seat cushion whose posture does not change, the overcurrent protection member can be supported in a stable state.

  According to the fourth aspect of the invention, the overcurrent protection member is attached to the rear portion of the seat cushion at a position where it does not interfere with the vertical rotation of the seat back. Therefore, the overcurrent protection member is not conspicuous and the appearance of the vehicle seat does not deteriorate.

  According to the present invention, the quality check of the electric circuit of the heater and the overcurrent protection member can be completed when the vehicle seat is completed.

1 is an overall perspective view of a rear seat of a vehicle according to a first exemplary embodiment of the present invention as viewed from the front left side. FIG. 3 is a vertical cross-sectional view showing a connecting portion between a seat cushion and a seat back of the rear seat and a rear portion thereof. It is an electric circuit diagram of the seat heater of the rear seat. FIG. 3 is a perspective view of the seat cushion of the rear seat as viewed from the left rear (a perspective view showing a mounting position of a fuse holder or the like of a seat heater). It is a perspective view showing the attachment position of the fuse holder etc. of the seat heater in the left seat of the rear seat. It is a perspective view of a support plate of a fuse holder and a connector such as a seat heater. It is a perspective view showing a state where a connector such as a seat heater and a fuse holder are attached to the support plate. It is a perspective view showing the attachment position of the fuse holder of the seat heater in the front seat.

[Embodiment 1]
Hereinafter, the vehicle seat according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. The vehicle seat according to this embodiment is a rear seat of a vehicle including a seat heater. Here, the front-rear, left-right, and top-bottom shown in the drawing correspond to the front-rear, left-right, and top-bottom of the vehicle including the rear seat according to the present embodiment.

<Outline of rear seat 10>
As shown in FIG. 1, the rear seat 10 is a seat for three persons that is installed in the rear portion of the vehicle compartment R of the vehicle, and is composed of a seat cushion 20, a seat back 30, a headrest and the like (not shown). Then, the rear portion of the cushion frame (not shown) of the seat cushion 20 and the lower portion of the back frame (not shown) of the seat back 30 are connected via a recliner (not shown). As a result, the seat back 30 can rotate up and down with respect to the seat cushion 20 about the axis of the recliner. The cushion frame of the seat cushion 20 is fixed to the floor panel F of the vehicle compartment R by a connecting mechanism such as bolts and nuts.

  As shown in FIG. 2, on the rear side of the rear seat 10, a cross member 12 extending in the vehicle width direction is provided on a floor panel F, and the rear side of the cross member 12 serves as a storage space S for spare tires and the like. ing. The cross member 12 and the storage space S for the spare tire and the like are covered with the resin plate 14. Further, as shown in FIGS. 1 and 2, two upper and lower deck boards 15 can be set on the resin plate 14. Further, a cloth-like cover member 17 is stretched between the front edge of the resin plate 14 and the back surface of the seat back 30 of the rear seat 10 so that the inside of the resin plate 14 cannot be seen from the outside. As shown in FIG. 2, the cover member 17 is formed with a sufficient size so as not to prevent the seat back 30 from rotating forward to a position facing the seating surface 21 of the seat cushion 20. Has been done.

<About the seat heater 40>
As shown in FIG. 1, the rear seat 10 is provided with seat heaters 40 for the left seat X and the right seat Z. Here, since the seat heaters 40 of the left seat X and the right seat Z have the same configuration, the seat heater 40 of the left seat X will be described as a representative. The seat heater 40 is provided on the cushion side heater 41 provided at the position of the seating surface 21 in the state of being covered by the skin of the seat cushion 20, and at the position of the backrest surface 31 being covered by the skin of the seat back 30. And a back side heater 42. As shown in the electric circuit diagram of FIG. 3, the cushion side heater 41 is composed of a temperature control heater 41a and a base heater 41b. The back side heater 42 is composed of a temperature control heater 42a and a base heater 42b. The temperature control heater 41a of the cushion side heater 41 and the temperature control heater 42a of the back side heater 42 are connected in series. Further, the base heater 41b of the cushion side heater 41 and the base heater 42b of the back side heater 42 are connected in series.

  The seat heater 40 is driven by electric power supplied from a battery V of the vehicle, as shown in FIG. That is, the seat heater 40 is provided with the power supply connector 51 to which the connector of the power supply cable VW on the battery V side is connected. The power supply connector 51 includes a plus terminal 51p and a minus terminal 51n. Then, the power source plus wire 40p of the seat heater 40 is connected to the plus terminal 51p of the power source connector 51. Further, the power source minus wire 40n of the seat heater 40 is connected to the minus terminal 51n of the power source connector 51. The fuse in the fuse holder 47 is connected to the power plus line 40p of the seat heater 40 via the plus terminal 53p of the fuse connector 53. The plus terminal (illustration number omitted) of the heater starting switch 43 is connected to the fuse via the minus terminal 53n of the fuse connector 53.

  As shown in FIG. 3, the minus terminal (illustration number omitted) of the heater start switch 43 is connected to the plus terminal of the temperature control heater 42a of the back side heater 42 via the first plus terminal 55p of the inter-seat connector 55. Has been done. Further, the minus terminal of the temperature controlling heater 42a of the back side heater 42 is connected to the plus terminal of the temperature controlling heater 41a of the cushion side heater 41 via the first minus terminal 55n of the inter-seat connector 55. The minus terminal of the temperature controlling heater 41a of the cushion side heater 41 is connected to the power source minus wire 40n via the thermostat 45.

  Further, as shown in FIG. 3, the minus terminal (not shown) of the heater start switch 43 is connected to the plus terminal of the base heater 42b of the back side heater 42 through the second plus terminal 55q of the inter-seat connector 55. It is connected. Further, the minus terminal of the base heater 42b of the back side heater 42 is connected to the plus terminal of the base heater 41b of the cushion side heater 41 via the second minus terminal 55r of the inter-seat connector 55. The minus terminal of the base heater 41b of the cushion side heater 41 is connected to the power source minus wire 40n.

  With the above configuration, when the heater start switch 43 is turned on, a current flows through the temperature control heater 41a of the cushion side heater 41 and the temperature control heater 42a of the back side heater 42. Further, a current flows through the base heater 41b of the cushion side heater 41 and the base heater 42b of the back side heater 42. Thereby, the seating surface 21 of the seat cushion 20 and the backrest surface 31 of the seatback 30 are kept warm. Then, when the temperatures of the seating surface 21 and the backrest surface 31 rise above the upper limit temperature and the thermostat 45 operates, the current loops of the temperature control heaters 41a and 42a of the cushion side heater 41 and the back side heater 42 are cut off, The temperature control heaters 41a and 42a are turned off. That is, only the base heater 41b of the cushion side heater 41 and the base heater 42b of the back side heater 42 operate.

  When the temperatures of the seating surface 21 and the backrest surface 31 gradually decrease and the temperatures of the seating surface 21 and the backrest surface 31 decrease below the lower limit temperature, the thermostat 45 operates and the cushion side heater 41 and the back side heater 42. The current loops of the temperature control heaters 41a and 42a are conducted. As a result, the temperature control heaters 41a and 42a are turned on, and the temperatures of the seating surface 21 and the backrest surface 31 gradually rise. If an overcurrent flows in the electric circuit of the seat heater 40, the fuse in the fuse holder 47 is blown to protect the seat heater 40.

<About mounting structure of fuse holder 47 of seat heater 40, connectors 51, 53, 55, etc.>
The fuse holder 47 of the seat heater 40, the power supply connector 51, the fuse connector 53, and the inter-seat connector 55 are attached to the rear end vertical wall surface 23 of the seat cushion 20 by a support plate 60, as shown in FIGS. As shown in FIG. 6, the support plate 60 is a resin plate formed by a horizontal plate portion 61 and a vertical plate portion 63 into an L-shaped cross section. The horizontal plate portion 61 of the support plate 60 includes a right flat plate portion 61r and a left flat plate portion 61f partitioned by a step 61d, and a narrow flat plate portion 61n is provided on the left side of the left flat plate portion 61f. .. Further, the vertical plate portion 63 of the support plate 60 is provided with a fuse holder mounting portion 63h and a fuse connector mounting portion 63c at positions corresponding to the narrow flat plate portion 61n of the horizontal plate portion 61. A sewing groove 63m used when the support plate 60 is sewn to the outer skin of the rear end vertical wall surface 23 of the seat cushion 20 is formed at the upper end position of the vertical plate portion 63 so as to extend in the left-right direction.

  As shown in FIG. 7, the fuse connector 53 is attached to the vertical plate portion 63 of the support plate 60 at a position of the fuse connector attachment portion 63c (see FIG. 6) so that the connector connection port faces left. As a result, the fuse holder 47 can be inserted into and removed from the connector connection port of the fuse connector 53 along the vertical plate portion 63 of the support plate 60 in the left-right direction. Further, as shown in FIG. 7, the power supply connector 51 and the inter-sheet connector 55 are mounted on the left flat plate portion 61f of the horizontal plate portion 61 of the support plate 60 so that the connector connection ports face rearward. As a result, the connector of the power cable VW on the battery V side can be inserted into and removed from the connector connection port of the power connector 51 from the front-rear direction of the vehicle. Similarly, the heater connector on the seat back side can be inserted into and removed from the connector connection port of the inter-seat connector 55 from the front-rear direction of the vehicle. A connector 58 for the seating sensor of the left seat X and a connector 59 for the seating sensor of the central seat Y are mounted on the right flat plate portion 61r of the horizontal plate portion 61 of the support plate 60.

  As described above, since the fuse connector 53, the power supply connector 51, and the inter-seat connector 55 are attached to the rear end vertical wall surface 23 of the elastically deformable seat cushion 20 via the support plate 60, for example, the fuse connector 53. The fuse connector 53 does not move unstably when the fuse holder 47 is inserted into or removed from the connector connection port. That is, the work of inserting/removing the fuse holder 47 into/from the fuse connector 53 can be performed in a stable state. Further, as shown in FIG. 2, the support plate 60 and the like are attached at positions that do not interfere with the rotation of the seat back 30 with respect to the seat cushion 20.

<Correspondence between terms of the rear seat 10 according to the first embodiment and terms of the present invention>
The seat cushion 20 and the seat back 30 of the rear seat 10 correspond to the seat body of the present invention. Further, bolts, nuts and the like for fixing the cushion frame of the seat cushion 20 to the floor panel F of the vehicle compartment R correspond to the connecting mechanism of the present invention. Further, the floor panel F corresponds to the floor portion of the present invention. The seat heater 40 corresponds to the heater of the present invention, and the fuse in the fuse holder 47 in the electric circuit corresponds to the overcurrent protection member of the present invention. Further, the battery V of the vehicle corresponds to the power source used for driving the vehicle in the present invention. Further, the support plate 60 corresponds to the plate-shaped component of the present invention.

<Advantages of the rear seat 10 according to the present embodiment>
According to the rear seat 10 according to the present embodiment, the fuse holder 47 (overcurrent protection member) of the seat heater 40 is attached to the seat cushion 20 (seat body), so that the rear seat 10 (vehicle seat) is used as a vehicle (vehicle). Before the installation, the quality check of the electric circuit of the seat heater 40 of the rear seat 10 and the fuse in the fuse holder 47 can be performed. Therefore, unlike the prior art, after the rear seat 10 is installed in the vehicle, it is not necessary to check the wiring between the rear seat 10 and the fuse holder 47. That is, when the rear seat 10 is completed, the quality check of the electric circuit of the seat heater 40, the fuse holder 47, etc. can be completed.

  The fuse holder 47 is attached to the seat cushion 20 via a support plate 60 (plate-shaped component). Therefore, for example, even when the fuse holder 47 is attached to the cushion pad portion of the seat cushion 20, the support plate 60 can support the fuse holder 47 in a stable state. Further, since the fuse holder 47 is attached to the seat cushion 20 whose posture does not change, the fuse holder 47 can be supported in a stable state. Further, since the fuse holder 47 is mounted on the rear end vertical wall surface 23 of the seat cushion 20 at a position where it does not interfere with the vertical rotation of the seat back 30, the fuse holder 47 is difficult to see from the outside and the appearance of the rear seat 10 is not deteriorated. ..

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the rear seat 10 of the vehicle is illustrated as an example of the vehicle seat. However, as shown in FIG. 8, the present invention can be applied to the front seat 18 of the vehicle. That is, the front seat 18 includes a seat cushion 18s, a seat back 18b, a headrest 18r, and the like. The cushion frame of the seat cushion 18s is connected to a front/rear slide mechanism fixed to the floor panel F of the passenger compartment and a seat moving mechanism (not shown) such as a seat lifter. The seat moving mechanism is covered below the seat cushion 18s by a shield 18c which is a resin plate member.

  The seat cushion 18s is provided with a cushion side heater 41 of the seat heater 40, and the seat back 18b is provided with a back side heater 42 of the seat heater 40. A fuse holder 47 of the electric circuit of the seat heater 40 is attached to the left front part of the inner wall surface of the shield 18c. In the front seat 18, the power supply connector 51 of the electric circuit of the seat heater 40, the inter-seat connector 55, etc. are attached to the rear portion of the inner wall surface of the shield 18c. Thus, in the front seat 18, the seat cushion 18s, the seat back 18b, the headrest 18r, and the like correspond to the seat body of the present invention, and the shield 18c corresponds to the plate-shaped component of the present invention. Further, the fixed portion of the front and rear slide mechanism that constitutes the seat moving mechanism of the front seat 18 corresponds to the connecting mechanism of the present invention.

  Furthermore, in the present embodiment, an example in which the present invention is applied to a vehicle seat has been shown, but the present invention can also be applied to seats for trains, airplanes, ships, etc. other than vehicles.

10...Rear seats (vehicle seats)
18... Front seats (vehicle seats)
18c... Shield (plate-shaped component)
20...Seat cushion (seat body)
30...Seat back (seat body)
40...Seat heater (heater)
41...Cushion heater (left seat)
42...Back heater (left seat)
410: Cushion heater (right seat)
420... Back side heater 42 (right seat)
47... Fuse holder 53... Fuse connector 60... Support plate (plate-shaped component)
V battery (power supply used to drive the vehicle)

Claims (4)

A vehicle including a seat body and a connecting mechanism that connects the seat body to a floor of the vehicle, and a heater that is operated by electric power supplied from a power source used to drive the vehicle is provided in the seat body. A sheet,
The electric circuit of the heater is provided with an overcurrent protection member that protects the heater by blocking overcurrent.
A vehicle seat in which the overcurrent protection member is attached to the seat body. The vehicle seat according to claim 1,
The vehicle seat, wherein the overcurrent protection member is attached to the seat body via a plate-shaped component. A vehicle seat according to claim 1 or claim 2,
The seat body includes a seat cushion, and a seat back connected to a rear portion of the seat cushion in a vertically rotatable manner,
The vehicle seat, wherein the overcurrent protection member is attached to the seat cushion. The vehicle seat according to claim 3,
The vehicle seat according to claim 1, wherein the overcurrent protection member is attached to a rear portion of the seat cushion at a position where it does not interfere with vertical rotation of the seat back.

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