JP5119660B2 - Wiring connection structure to vehicle seat headrest - Google Patents

Description

  The present invention relates to a wiring connection structure to a headrest of a vehicle seat. Specifically, the headrest disposed on the upper part of the seat back of the vehicle seat is detachably mounted so that the position of the headrest can be adjusted in the height direction with respect to the seat back, and the wiring is routed inside the seat back. The present invention relates to a wiring connection structure to a headrest of a vehicle seat that connects a wiring routed inside the headrest.

Conventionally, some vehicle seat headrests are assembled with electrical components such as a television monitor and a speaker. These electrical components are energized by being connected to wiring drawn into the headrest from the inside of the seat back. Here, an example of a wiring connection structure to the headrest is disclosed in Patent Document 1 below. In this disclosure, a first terminal contact serving as a connection terminal for wiring connected to an electrical component wired to the headrest is a second terminal contact serving as a connection terminal for wiring coming from the vehicle body side wired to the seat back. It is structured to be plugged in and connected.
Specifically, the wiring routed inside the headrest is inserted into a tubular stay provided on the lower surface of the headrest. And the 1st terminal contact which is the connection terminal is hold | maintained in the lower end side opening part position of a stay. On the other hand, the second terminal contact is engaged and held inside a cylindrical support serving as a stay insertion port provided on the upper surface of the headrest. As a result, the second terminal contact is inserted and connected to the first terminal contact so that they can be energized with each other by the movement of the stay inserted into the support.
Here, the second terminal contact is inserted and connected to the first terminal contact by inserting the stay, so that the engagement state with the support is released by the insertion operation force. Accordingly, even after the first terminal contact and the second terminal contact are connected, further staying operation of the stay can be allowed, and the headrest can be preferably attached.

JP 2002-184523 A

  However, in the above conventional disclosed technology, the connection structure of each terminal contact is complicated in order to simultaneously achieve the connection of each terminal contact and the further insertion movement of the stay after the connection.

  The present invention was devised as a solution to the above problem, and the problem to be solved by the present invention is that the terminal contacts of each wiring are connected by a stay insertion operation for mounting the headrest on the upper surface of the seat back. It is to simply configure a wiring connection structure that can be connected to each other so as to be energized and can allow further insertion movement of the stay after connection.

In order to solve the above problems, the wiring connection structure to the headrest of the vehicle seat of the present invention takes the following means.
According to a first aspect of the present invention, a headrest disposed at an upper portion of a seat back of a vehicle seat is detachably mounted in a height direction with respect to the seat back, and is installed inside the seat back. It is the wiring connection structure to the headrest of the vehicle seat which connects the wiring arranged and the wiring arranged inside the headrest. Height adjustment and removable with respect to the seat back of the headrest, the tubular stays attached integrally to the headrest, is disposed in the upper position of the seat back, the inner cylinder can be inserted fitting stays This is made possible by a structure that is inserted into and fitted into the fitting member. The inner cylinder of the fitting member, the surface portion thereof stays slides fitted inserts, fixed-side terminal contact of a length corresponding to the height adjustment range of at least the headrest is formed. The peripheral position of the stay, the sliding-side terminal contact which can slide in contact a length range of the stationary terminal contacts formed on the fitting member is formed. Sliding side terminal contact is shorter in length than the fixed-side terminal contact, provided in a state where a part thereof is disposed in the interior of the stay is exposed to the outside in the radial direction from the hole formed in the lower portion of the stay When the stay is inserted and fitted into the fitting member, the stay is elastically squeezed radially inward and is in sliding contact with the fixed-side terminal contact being subjected to elastic force. Yes. Fixed-side terminal contact is connected to the wiring to be routed in the interior of the sheet Tobakku, sliding side terminal contact is connected to the wiring to be routed in the interior of the F Ddoresuto, these fixed-side terminal contact and the sliding-side terminal contact bets is possible to electrically connect the interconnects within the height adjustment range of the headrest by the configuration which slides in contact with each other.
According to the first invention, the sliding-side terminal contacts formed on the outer periphery of the stay, by the stay is inserted into the inner cylinder of the disposed a fitting member in the upper position of the seat back, elastic And is pressed against a fixed-side terminal contact provided on the inner cylinder of the fitting member . Thereby, both terminal contacts are brought into a pressure-contacted state so that they can be energized. The fixed-side terminal contact is formed with a length corresponding to the height adjustment range of the headrest that accompanies the stay insertion / removal movement, and the stay in a state where the pressure contact state in which current can be applied to the sliding-side terminal contact is maintained. Allow to move in and out. By pulling out the stay from the inner cylinder of the fitting member, the pressure contact state where both terminal contacts can be energized is released and the headrest is removed from the seat back.

The second invention is the first invention described above, Ru der which the resin layer is provided for covering the space between the sliding-side terminal contact inside of the stay.
According to the second invention, a resin layer provided on the inside of the stay, the stay and the sliding contact terminal is Ru are insulated.

The third invention is the first or the second invention described above, the inner cylinder of the fitting member, Ru der those formed through the insertion direction of the stay.
According to the third aspect of the invention, since the inner cylinder of the fitting member is formed so as to penetrate in the stay insertion direction, foreign matter such as dust does not accumulate inside the fitting member. Therefore, the operation of inserting the stay into the inner tube of the fitting member is no longer inhibited, Ru electrical connection between both terminal contact is performed properly.

A fourth invention, in the third one of the invention from the first described above, the sliding-side terminal contacts, that provided more axially symmetrical positions of the stay.
According to the fourth aspect of the invention, the action of the elastic force toward the stationary terminal contact of the sliding terminal contact acts in a state where the force is balanced at the axially symmetrical position of the stay .

The present invention can obtain the following effects by taking the above-described means.
First, according to the first invention, the sliding side terminal contact provided on the stay of the headrest is slidably pressed to the fixed side terminal contact provided inside the fitting member in the seat back . It is possible to easily configure a wiring connection structure that connects (connects) the terminal contacts of each wiring so that they can be energized by an insertion operation of the stay, and allows a further insertion movement of the stay after the connection. . In addition, the sliding terminal contact is configured to slide on the fixed terminal contact as the stay is inserted, so when the headrest is removed from the seat back, the fixed terminal contact or sliding side Even if foreign matter such as dust or oxide film adheres to the terminal contact, it can be slid in the form of retreating it. That is, even when foreign matter such as dust or oxide film adheres between the sliding side terminal contact and the fixed side terminal contact, the foreign matter can be removed along with the sliding accompanying the pressure contact of the sliding side terminal contact. Therefore, contact failure can be prevented from occurring. In addition, the sliding side terminal contact is formed shorter than the fixed side terminal contact provided inside the seat back, and is provided so as to be exposed to the outside from the hole formed in the lower part of the stay. The sliding side terminal contact can be connected to the fixed side terminal contact inside the seat back shape without exposing the sliding side terminal contact above the seat back even if it is moved up and down for adjustment of the seat so that the electrical connection performance does not deteriorate can do.
Furthermore, according to the second aspect of the present invention, the insulating structure is made compact without increasing the size of the stay by providing a resin layer that covers and insulates the sliding terminal contact inside the tubular stay. Can be set .
Furthermore, according to the third invention, by forming through the inner cylinder of the fitting member disposed at the upper position of the seat back, foreign matter such as dust does not accumulate inside the fitting member, The stay can be inserted smoothly. Thereby, electrical connection of both terminal contacts can be performed properly .
Further, according to the fourth invention, by providing a plurality of sliding side terminal contacts at the axially symmetrical position of the stay, the elastic force of the sliding side terminal contact is balanced with respect to the stay in an axially symmetrical manner. Can be made to work. Thus, it is possible to smoothly perform the operation to pull out Dari crowded difference the stay, the pressure contact state of the two terminal contact may Rukoto stabilized.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

First, a wiring connection structure (hereinafter referred to as a wiring connection structure) to the headrest of the vehicle seat according to the first embodiment will be described with reference to FIGS. 1 to 6, in order to show the internal structure of the seat back 2 in an easy-to-understand manner, the skin structure of the seat back 2 is omitted and only the internal framework structure is shown.
Here, in FIG. 1, a schematic configuration of the vehicle seat 1 of the present embodiment is represented by a perspective view. In the vehicle seat 1, an electrical component D such as a speaker is assembled in the headrest 3, and a wiring 20 </ b> A for supplying power to the electrical component D is drawn into the seat back 2 from the vehicle body side. ing. Here, the headrest 3 is formed by inserting two tubular stays 3S integrally attached to the lower surface portion thereof into an insertion port Sa of a support 2S provided on the upper surface portion of the seat back 2, thereby 2 is attached to the upper surface portion. Further, the headrest 3 can be detached from the seat back 2 by pulling out the stay 3S from the insertion port Sa.
Accordingly, the wiring 20 </ b> A coming from the vehicle body side drawn into the seat back 2 does not look good when exposed to the outside of the seat back 2 when the headrest 3 is removed. It is routed at. In order to electrically connect the wiring 20A to the electrical component D provided in the headrest 3, the wiring 10A previously electrically connected to the electrical component D is used as a call line in the headrest 3. It is routed in a state where it is called up to the lower position of the seat back 2.

The wiring 10A is inserted through the inside of each stay 3S, and a leaf spring-like sliding side terminal contact 10B serving as a connecting terminal is held at a lower position of the stay 3S. On the other hand, the wiring 20A routed inside the seat back 2 slides when the long plate-like fixed-side terminal contact 20B serving as a connecting terminal thereof is inserted into the insertion port Sa. It arrange | positions in the position which can contact the side terminal contact 10B so that electricity supply is possible.
Therefore, the wiring 20A routed inside the seat back 2 can be energized with the wiring 10A routed in the headrest 3 by performing the work of mounting the headrest 3 on the seat back 2 by inserting the stay 3S. Connected to. Further, the connecting terminals of these wirings 10A and 20A are allowed to be further inserted into the stay 3S while maintaining the connected state even when the connection terminals are connected to each other by the above insertion operation. The connection structure can be made. Thereby, the adjustment operation of the height position of the headrest 3 can be performed while maintaining the connection state in which the wirings 10A and 20A can be energized. The connection terminals of these wirings 10A and 20A have a structure in which the connection state in which the currents can be energized is separated and released by pulling out the stay 3S from the support 2S and removing the headrest 3 from the seat back 2. In other words, the connecting terminals of these wirings 10A and 20A have a connecting structure in which the headrest 3 is connected to the seat back 2 or removed from the seat back 2 so that they can be connected to each other so that they can be energized. Yes.
Hereinafter, the configuration of each part of the wiring connection structure will be described in detail.

First, the configuration of the headrest 3 and the wiring 10A and the like routed therein will be described.
That is, as shown in FIG. 1, two tubular stays 3 </ b> S are integrally attached to the headrest 3 so as to hang from the lower surface portion in the horizontal width direction. Here, the stay 3S on the one side shown on the left side of the drawing has a plurality of concave locking grooves Sd in the longitudinal direction formed by partially cutting the outer periphery of the tube wall inward in the radial direction ( For example, four places) are formed side by side. The locking groove Sd is a locking claw provided so as to protrude into the insertion port Sa by inserting the stay 3S on the left side into the insertion port Sa of the support 2S. It locks with St (omitted in FIG. 1). Therefore, the movement of the stay 3S on the left side in the insertion direction is restricted by this locking, so that the headrest 3 is held in a state of being mounted on the upper surface portion of the seat back 2.
Here, the locking structure of the locking groove Sd and the locking claw St is shown in detail in FIG. This locking claw St is formed integrally with a knob Sb provided on the side of the upper surface portion of the support 2S, and is always in the mouth of the insertion port Sa by a biasing force of a biasing means such as a spring (not shown). It is held in a protruding posture. The locking claw St is operated so as to be pushed out of the insertion port Sa by pushing the knob Sb into the insertion port Sa (toward the right side in the figure). As a result, the locking state between the locking claw St and the locking groove Sd is released, the movement restriction state in the insertion direction with respect to the stay 3S is released, and the stay 3S further moves in the insertion direction. Is possible. Here, the pressing operation of the knob Sb can be performed by moving the stay 3S in the insertion direction even slightly from the position where the locking claw St and the locking groove Sd are locked. Even if the pushing operation is stopped when the state is removed from the locking position, the locking claw St is pressed against the outer periphery of the tube wall of the stay 3S and the stay 3S can be allowed to move in the insertion direction. So that the operation can be stopped. Therefore, by moving the stay 3S further in the insertion direction with the pushing operation of the knob Sb stopped, as shown in FIG. 6, the engagement formed at the upper position of the locking groove Sd described above. The stop groove Sd can be locked with the locking claw St. Thereby, adjustment which lowers the height position of headrest 3 can be performed. Similarly, if the adjustment for moving the stay 3S in the pulling direction is performed, the height position of the headrest 3 can be adjusted to be increased. As shown in FIG. 1, the adjustment range of the height position of the headrest 3 is set as a range between the upper end side locking groove Sd and the lower end side locking groove Sd formed in the stay 3S. Yes.

Then, wirings 10 </ b> A routed inside the headrest 3 are respectively inserted into the tubular stays 3 </ b> S. As shown in FIG. 2, these wirings 10 </ b> A are connected to a metal leaf spring-like sliding-side terminal contact 10 </ b> B serving as a connecting terminal at a lower end portion thereof so as to be energized.
Here, the sliding-side terminal contacts 10B are equally disposed at four positions in the circumferential direction that are axially symmetric at the lower position of the stay 3S. These sliding-side terminal contacts 10B are formed in a shape in which a metal plate member is bent as shown in FIG. The sliding-side terminal contact 10B has an upper end fixed to the resin layer Sr covered on the inner periphery of the tube wall of the stay 3S, and extends from the inside to the outside of the window portion Sw formed through the tube wall. It is held in a protruding posture. Thereby, each sliding-side terminal contact 10B is configured to be elastically deformed inward and outward in the radial direction with the upper end fixed to the tube wall of the stay 3S as the base end. Here, the part surface which protruded outside the window part Sw of the sliding-side terminal contact 10B is formed such that the upper and lower part surfaces rise in an inclined manner from the tube wall of the stay 3S. Therefore, the sliding-side terminal contact 10B performs an operation of inserting the stay 3S into the insertion port Sa of the support 2S, so that the lower inclined surface of the contact comes into contact with the peripheral edge of the insertion port Sa. It is deformed by bending inward in the radial direction in such a way that it is squeezed. Thus, the sliding-side terminal contact 10B is inserted into the insertion port Sa integrally with the stay 3S by the insertion operation of the stay 3S.

Next, returning to FIG. 1, the configuration of the seat back 2 and the wiring 20 </ b> A and the like routed therein will be described.
That is, two resin-made supports 2S having the insertion port Sa for inserting the above-described stay 3S are provided on the upper arm portion of the back frame 2F forming the skeleton of the seat back 2. As shown in FIG. 2, these supports 2 </ b> S are inserted and fixed integrally with a square cylindrical holder 2 </ b> H welded to the upper arm portion of the back frame 2 </ b> F. The insertion port Sa formed in the support 2S is formed so as to penetrate in the vertical direction in the figure, which is the insertion direction of the stay 3S. As a result, the stay 3S can be inserted through the support 2S. It should be noted that the diameter of the insertion port Sa is such that the stay 3S can be smoothly inserted and removed and that the inserted stay 3S does not rattle in the radial direction within the insertion port Sa. The dimensions are set to be slightly larger than the outer diameter.
Each square tube-shaped holder 2H has a resin-made holder 30 that holds a long plate-like fixed-side terminal contact 20B that serves as a connection terminal of the wiring 20A arranged inside the seat back 2. Each is installed. These holders 30 are formed in a bottomed cylindrical shape, and are fixed by being inserted and fitted so that the upper end side portion partially formed in a rectangular tube shape covers the holder 2H from below. Thereby, as shown in FIG. 3, the holder 30 is held in a state in which the central axis of the tube port 30a coincides with the central axis of the insertion port Sa of the support 2S.

Here, the diameter of the tube port 30a that is the inner tube of the holder 30 is set to be the same as the diameter of the insertion port Sa of the support 2S. Accordingly, the stay 3S inserted through the support 2S is also inserted into the inner cylinder of the holder 30. Note that the diameter of the tube opening 30a may be set larger than the diameter of the insertion port Sa of the support 2S. That is, the stay 3S is held by the diameter of the insertion port Sa of the support 2S so as not to be rattled in the radial direction. Because. In addition, the structure which accept | permits the insertion movement of the stay 3S comprised by this holder 30 and the support 2S corresponds to the fitting member of this invention.
Then, referring back to FIG. 2, the cylindrical wall of the holder 30 has four circumferentially symmetrical axes corresponding to the arrangement positions of the sliding-side terminal contacts 10 </ b> B provided on the stay 3 </ b> S. The metal long plate-like fixed-side terminal contacts 20B are evenly arranged at the positions. As shown in FIG. 3, these fixed-side terminal contacts 20 </ b> B are fixed to the holder 30 by being partially embedded in the bottom portion 31 of the holder 30, and their lower end portions are below the bottom portion 31. It is connected to the wiring 20 </ b> A that projects in the seatback 2 and is energized. The fixed-side terminal contact 20 </ b> B is held in a posture state in which a portion extending upward is positioned outside the window portion 30 w formed through the cylindrical wall of the holder 30.
Here, the length in the vertical direction of the portion facing the outside of the window 30w of the fixed terminal contact 20B is formed in the adjustment range width of the height position of the headrest 3 described above with reference to FIG. 1, that is, the stay 3S. The sliding-side terminal contact 10B can slide on the fixed-side terminal contact 20B by a length corresponding to the interval width between the upper-side locking groove Sd and the lower-side locking groove Sd. Is set.

Therefore, when the stay 3S is inserted into the insertion port Sa of the support 2S, as shown in FIG. 4, the stay 3S squeezes each sliding-side terminal contact 10B provided to protrude downward. In this state, it is inserted into the insertion port Sa. Then, as shown in FIG. 5, each sliding side terminal is inserted by inserting the stay 3 </ b> S to a position where the lower end side locking groove Sd formed in the stay 3 </ b> S is locked with the locking claw St of the support 2 </ b> S. The contact 10 </ b> B is inserted into a position inside each window 30 w formed in the holder 30. As a result, each sliding-side terminal contact 10B is pressed against each fixed-side terminal contact 20B located outside the window 30w by elastic deformation outward in the radial direction accompanying the restoration thereof. Become. As a result, the sliding-side terminal contact 10B is in a state in which the sliding-side terminal contact 10B is pressed against the fixed-side terminal contact 20B in the radial direction so as to be electrically connected to each other, and the wirings 10A and 20A are electrically connected.
When the knob Sb is pushed from the state shown in FIG. 5 and the stay 3S is further moved in the insertion direction, the sliding terminal contact 10B can be energized by being pressed against the fixed terminal contact 20B. It slides on the sliding terminal contact 10B while maintaining the pressure contact state. As a result, as shown in FIG. 6, the insertion amount of the stay 3 </ b> S can be adjusted in a state where the electrical connection state of both the wirings 10 </ b> A and 20 </ b> A is maintained. The sliding movement of the sliding terminal contact 10B is made possible within the range of the length of the fixed terminal contact 20B facing the outside of the window 30w. Therefore, within the range of adjustment movement of the height position of the headrest 3, the sliding-side terminal contact 10B is always kept in pressure contact with the fixed-side terminal contact 20B so that both the wires 10A and 20A are electrically connected. State is maintained.
The sliding-side terminal contact 10B is moved in the direction in which the stay 3S is pulled out from the state shown in FIG. It bends and deforms inward in the radial direction. As a result, the sliding-side terminal contact 10B is pulled out of the support 2S integrally with the stay 3S by the pull-out operation of the stay 3S, and is released from the pressure-contact state in which power can be supplied to the fixed-side terminal contact 20B.

Subsequently, a method of using the present embodiment will be described.
That is, as shown in FIG. 1, by inserting the two stays 3S provided on the lower surface portion of the headrest 3 into the insertion ports Sa of the supports 2S provided on the upper surface portion of the seat back 2, the headrest 3 is attached to the upper surface of the seat back 2. As a result, as shown in FIG. 5, the sliding-side terminal contact 10B provided on the stay 3S is in pressure contact with the fixed-side terminal contact 20B provided inside the seat back 2 so as to be energized. 10A and 20A are electrically connected.
Then, by pushing the knob Sb from this state and further moving the stay 3S in the insertion direction, the sliding-side terminal contact 10B is brought into a pressure-contact state that can be energized against the fixed-side terminal contact 20B. While maintaining, it slides on the sliding terminal contact 10B. As a result, as shown in FIG. 6, the height position of the headrest 3 can be adjusted and moved while the electrical connection state of both the wirings 10 </ b> A and 20 </ b> A is maintained.
In order to remove the headrest 3 from the seat back 2, it is only necessary to push the knob Sb so as to pull out the stay 3S from the support 2S. Thereby, the sliding-side terminal contact 10B is pulled out from the support 2S together with the stay 3S, and the electrical connection state of both the wirings 10A and 20A can be released.

Thus, according to the wiring connection structure of the present embodiment, the sliding-side terminal contact 10B provided on the stay 3S of the headrest 3 is fixed to the fixed-side terminal contact 20B provided inside the seat back 2 by the action of its elastic force. By connecting the stays 3S, the terminal contacts of the wires 10A and 20A can be connected (connected) so that they can be energized, and the stay 3S is further inserted and moved after being connected. It is possible to easily configure a wiring connection structure that can tolerate the above. Further, since the sliding terminal contact 10B slides on the fixed terminal contact 20B as the stay 3S is inserted, the sliding terminal contact 10B slides when the headrest 3 is removed from the seat back 2. Even if foreign matter such as dust or oxide film adheres to the terminal contact 10B or the fixed-side terminal contact 20B, it can be slid in such a manner as to retreat. That is, even when foreign matter such as dust or oxide film adheres between the sliding terminal contact 10B and the fixed terminal contact 20B, the foreign matter is removed along with the sliding accompanying the pressure contact of the sliding terminal contact 10B. Therefore, contact failure can be prevented from occurring.
Furthermore, by providing a plurality of sliding side terminal contacts 10B at the axially symmetric positions of the stay 3S (four in this embodiment), the elastic force of the sliding side terminal contacts 10B is balanced with respect to the stay 3S in an axially symmetrical manner. It can be made to act in a form that can be removed. Thereby, the operation of inserting and withdrawing the stay 3S can be performed smoothly, and the pressure contact state of both terminal contacts can be stabilized.
Furthermore, the sliding-side terminal contact 10B is provided at a lower position of the stay 3S, so that the sliding-side terminal contact 10B is not exposed above the seatback 2 even if the stay 3S is inserted in a shallow amount. It can be connected to the fixed-side terminal contact 20B inside the shape, and it can be configured to look good.
Further, the fixed-side terminal contact 20B is provided inside the seat back 2 and formed longer than the sliding-side terminal contact 10B, so that the sliding-side terminal can be moved even if the headrest 3 is moved up and down to adjust the height position. The contact 10B can be connected to the fixed terminal contact 20B within the shape of the seat back 2 without exposing the contact 10B above the seat back 2, and the electrical connection performance can be prevented from being deteriorated.

Next, the wiring connection structure of Example 2 will be described with reference to FIG. In the following description, the description of the portions having substantially the same configuration and operation as the wiring connection structure described in the first embodiment will be omitted, and different portions will be described in detail with different reference numerals.
In the present embodiment, the shape of the holder 30 that holds the fixed-side terminal contact 20B is formed in a penetrating cylindrical shape having no bottom surface. Thereby, when the headrest 3 is removed from the seat back 2, even if foreign matter such as dust enters the inside of the holder 30, it does not accumulate. Therefore, the operation of inserting the stay 3S into the inner cylinder of the holder 30 is not hindered, and the sliding side terminal contact 10B and the fixed side terminal contact 20B can be properly connected.
Thus, according to the wiring connection structure of the present embodiment, foreign matters such as dust do not accumulate inside the holder 30 because the stay 3S is inserted through the inner cylinder of the holder 30. The stay 3S can be inserted smoothly. Thereby, electrical connection of both terminal contacts can be performed properly.

Although the embodiment of the present invention has been described with reference to two examples, the present invention can be implemented in various forms in addition to the above-described example.
For example, the sliding-side terminal contact provided on the stay may be arranged at a middle position or an upper position in the length direction of the stay. However, in this case, if the amount of stay insertion is shallow, the sliding-side terminal contact may be exposed above the seat back, and not only cannot be connected to the fixed-side terminal contact, but it also looks good. It should be noted that the configuration is bad.
Further, the sliding-side terminal contact and the fixed-side terminal contact may be provided only at one place in the circumferential direction with respect to the stay or the holder. Further, a plurality of them may be provided. However, if the arrangement is such that the radial acting force due to the elastic force of the sliding terminal contact does not act axisymmetrically, the operation of inserting and withdrawing the stay is smooth. It should be noted that it cannot be performed or the pressure contact state of both terminal contacts becomes unstable.
In addition, a configuration in which a resilient force is applied to the sliding terminal contact toward the fixed terminal contact is shown, but a configuration in which a resilient force is applied to the sliding terminal contact on the fixed terminal contact. It may be.

It is a perspective view showing the schematic structure of the wiring connection structure to the headrest of the vehicle seat of Example 1. It is a principal part expansion perspective view of FIG. It is the III-III sectional view taken on the line of FIG. It is sectional drawing showing the state which inserted the stay in the inside of the insertion port. It is sectional drawing showing the state by which the sliding side terminal contact was press-contacted with the stationary side terminal contact so that electricity supply was possible by the insertion operation of a stay. It is sectional drawing showing the state which the sliding side terminal contact slid on the fixed side terminal contact by the insertion operation of a stay. It is sectional drawing showing the structure of the wiring connection structure to the headrest of the vehicle seat of Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2F Back frame 2H Holder 2S Support Sa Insert port Sb Knob St Locking claw 3 Headrest 3S Stay Sw Window part Sr Resin layer Sd Locking groove 10A Wiring 10B Sliding side terminal contact 20A Wiring 20B Fixed Side terminal contact 30 Holder 30w Window part 30a Tube port 31 Bottom part D Electrical component

Claims (3)

A headrest disposed on an upper part of a seat back of a vehicle seat is mounted so as to be positionally adjustable and removable with respect to the seat back in a height direction, and a wiring routed inside the seat back; A wiring connection structure to the headrest of the vehicle seat that connects the wiring routed inside the headrest,
The height position adjustment and removal of the headrest with respect to the seat back can be performed by inserting and fitting the stay provided at the upper position in the seat back with a tubular stay integrally attached to the headrest. The structure is inserted and fitted into a fitting member having an inner cylinder so that it can be integrated with the stay .
A fixed-side terminal contact having a length corresponding to at least the height position adjustment range of the headrest is formed on a surface portion into which the stay is inserted and fitted and slides in the inner cylinder of the fitting member, and the outer peripheral position of the stay Is formed with a sliding side terminal contact capable of sliding contact the length range of the fixed side terminal contact formed on the fitting member,
The sliding-side terminal contact is shorter than the fixed-side terminal contact, and is disposed inside the stay and a part of the sliding-side terminal contact is exposed to the outside in the radial direction from a hole formed in the lower portion of the stay. As the stay is inserted and fitted into the fitting member, it is elastically squeezed inward in the radial direction so as to apply a resilient force to the fixed terminal contact. It is configured to
The fixed-side terminal contact is connected to a wiring routed inside the seat back, the sliding-side terminal contact is connected to a wiring routed inside the headrest, and the fixed-side terminal contact and the slide are connected. With the configuration in which the moving terminal contacts are in sliding contact with each other, electrical connection between the wirings within the height position adjustment range of the headrest is enabled ,
A wiring connection structure to a headrest of a vehicle seat, wherein a resin layer covering the sliding side terminal contact is provided inside the stay . A wiring connection structure to the headrest of the vehicle seat according to claim 1,
The wiring connection structure to the headrest of the vehicle seat , wherein the inner cylinder of the fitting member is formed so as to penetrate in the insertion direction of the stay . A wiring connection structure to the headrest of the vehicle seat according to claim 1 or 2,
The sliding-side terminal contacts, wire connection structure that the vehicle seat headrests, wherein are plurality et axially symmetrical positions of the stay.

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