JP2011140263A - Headrest attachment structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for efficiently attaching a headrest to a seatback, although, when the headrest is attached to the seatback by inserting a stay of the headrest to a holding member attached to the seatback, the headrest can be attached thereto with a receiving member on the seatback side waiting for the stay. <P>SOLUTION: The headrest is attached to the seatback 3 with the receiving member 30 on the seatback 3 side waiting for the stay 50. When the stay 50 is inserted into the holding member 18 with the receiving member 30 attached to a cover 20, in order to bring the receiving member 30 into the state of waiting for the stay 50, an energizing member 38 is fitted into a fitting part 56 of the stay 50, thus allowing the receiving member 30 to be also attached to the stay 50. A further insertion of the stay 50 allows the receiving member 30 to be separated from the cover 20 and attached only to the stay 50. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure for assembling a headrest, and more specifically, when a headrest stay is inserted into a holding member assembled to a seatback and the headrest is assembled to the seatback, a standby member on the seatback side waits for the stay. It is related with the assembly structure of the headrest which can be assembled by.

  Conventionally, when the headrest stay is inserted into the holding member that is assembled to the seat back and the headrest is assembled to the seat back, there is already an assembly structure of the headrest that can be assembled with the standby member on the seat back side waiting for the stay. Are known. Here, in Patent Document 1, when a headrest stay is inserted into a support that is a holding member assembled to a seatback and the headrest is assembled to the seatback, a female connector that is a standby member on the seatback side is fixed. An assembly structure of a headrest that can be assembled in a state of waiting for a male connector assembled at the tip of the head is disclosed. As a result, the male and female connectors can be joined simultaneously with the work of assembling the headrest to the seat back. For example, even if the headrest is equipped with electrical components, the work of assembling the headrest efficiently It can be carried out.

JP 2008-49820 A

  However, in the above-described conventional technology, since the female connector, which is a standby member, must be assembled to the lower end of the support with the cushion and skin covering the back frame, there is a problem that it is difficult to perform this assembly operation. It was. For this reason, the assembly work of the headrest cannot be performed efficiently.

  The present invention is intended to solve such a problem, and an object of the present invention is to provide a standby on the seat back side when the headrest stay is inserted into the holding member assembled to the seat back and the headrest is assembled to the seat back. To provide a structure in which a headrest can be efficiently assembled to a seat back even if the member can be assembled in a state of waiting for a stay.

The present invention is for achieving the above object, and is configured as follows.
According to the first aspect of the present invention, when the headrest stay is inserted into the holding member assembled to the seat back and the headrest is assembled to the seat back, the seat back side standby member is assembled in a state of waiting for the stay. The headrest can be assembled, and the holding member is assembled with a cover on which a standby member can be mounted. The standby member has a biasing member that can be fitted into a fitting portion formed on the stay. If the stay is inserted into the holding member while the standby member is mounted on the cover so that the standby member is in the state of waiting for the stay, the biasing member is inserted into the fitting portion of the stay. The standby member is also attached to the stay, and the stay is inserted into the holding member in this attached state. When go is a configuration which is characterized in that a state of waiting receiving member is attached only to stay disengaged from the cover.
According to this configuration, the standby member can be attached to the holding member before the back frame is covered with the cushion and the skin. Therefore, unlike the prior art, the standby member can be easily assembled, so that the headrest can be assembled efficiently.

The invention according to claim 2 is the headrest assembly structure according to claim 1, wherein the standby member is formed with an engagement hole or an engagement claw, and the cover is provided with the standby. An engagement claw or engagement hole that can be fitted into the engagement hole or engagement claw of the member is formed, and the standby member is attached to the cover by fitting the engagement hole and the engagement claw, The fitting positions of the engaging holes and the engaging claws and the fitting positions of the stay fitting portion and the biasing member are set to be different in the height direction.
According to this configuration, the size of the holding member and the base body in the radial direction (the radial direction of the stay) can be made compact.

FIG. 1 is a schematic perspective view showing the inside of a seat back according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 and shows a state before the base body is assembled to the holder. FIG. 3 is a diagram illustrating a state in which the base body is assembled to the holder from the state illustrated in FIG. 2. FIG. 4 is a diagram illustrating a state in which the stay is inserted into the support from the state illustrated in FIG. 3. FIG. 5 is a diagram illustrating a state in which the stay is further inserted into the support from the state illustrated in FIG. 4. FIG. 6 is a diagram illustrating a state in which the stay is further inserted into the support from the state illustrated in FIG. 5. FIG. 7 is a diagram illustrating a state in which the stay is further inserted into the support from the state illustrated in FIG. 6. FIG. 8 is a diagram illustrating a state in which the stay is further inserted into the support from the state illustrated in FIG. 7. FIG. 9 shows a state in which the stay is removed from the support from the state shown in FIG. FIG. 10 is a diagram illustrating a state in which the stay is further removed from the support from the state illustrated in FIG. 9.

  Hereinafter, the form for implementing this invention is demonstrated using FIGS. In the following description, the base body 30 with the inflator 40 attached will be described as an example of the standby member. In the following description, the terms “up”, “down”, “front”, “rear”, “left”, and “right” refer to the directions of “up”, “down”, “front”, “rear”, “left”, “right” described in the above-described drawings. The direction of up, down, front, back, left and right is shown.

  First, with reference to FIGS. 1-2, schematic structure of the seat back 3 in the vehicle seat 1 which concerns on the Example of this invention is demonstrated. The seat back 3 includes a back frame 10 that forms the contour, a cushion (not shown) that wraps the back frame 10, and a skin (not shown) that covers the surface of the cushion.

  Of the constituent members of the seat back 3, the back frame 10 will be described in detail. The back frame 10 is fixed so as to bridge a pair of left and right side frames 12, 12 and the upper portions of both side frames 12, 12. The upper frame 14 is formed in a substantially U shape. The upper frame 14 is fixed with substantially cylindrical holders 16, 16 on the left and right sides thereof. In addition, since a cushion and a seat cover may be well-known structures, these detailed description shall be abbreviate | omitted.

  Both holders 16 and 16 are assembled with substantially cylindrical supports 18 and 18 into which a pair of left and right stays 50 and 50 of a headrest (not shown) to be described later can be respectively inserted. Both the supports 18 and 18 correspond to a “holding member” recited in the claims. The supports 18 and 18 are each formed in a tapered shape (hereinafter referred to as a “tapered surface 18a”) so that the tips thereof are tapered.

  When the left stay 50 of the headrest described later is inserted into the left support 18 among the supports 18, 18, the height position of the inserted left stay 50 relative to the seat back 3 is manually adjusted. Possible known height adjustment mechanisms (not shown) are provided. Thereby, since the height position of the headrest assembled | attached to the seat back 3 can be adjusted, the height position of a headrest can be adjusted according to the physique (height) of the passenger | crew who seated on the vehicle seat 1. FIG.

  In addition, substantially U-shaped covers 20 and 20 are fixed to the holders 16 and 16 so as to cover the front surface and the left and right surfaces. At this time, the cover 20 is fixed to the holder 16 in a state in which the left and right surfaces can be bent in directions away from each other. Further, the cover 20 is formed with engaging claws 22 and 22 on the left and right inner surfaces thereof. Further, the base body 30 can be assembled to the left cover 20 of the covers 20 and 20.

  Here, the base body 30 will be described in detail. The base body 30 is a substantially cylindrical member in which a through hole 32 penetrating along the vertical direction is formed. The through hole 32 is formed so that the tip of the left stay 50 described later can be inserted together with the tip of the left support 18 described above from above. Therefore, the through hole 32 is formed in a taper shape (hereinafter referred to as “taper surface 32a”) so as to be able to correspond to the taper surface 18a of the support 18 into which the upper inner peripheral surface is inserted.

  Further, the through-hole 32 is mounted in such a manner that the inflator 40 is inserted from below. The inflator 40 is electrically connected to an ECU (not shown) provided in the vehicle seat 1. When the ECU detects that a rear collision has occurred in the vehicle, the internal projecting body 42 is It is mounted so that the rod 52 suspended inside the left stay 50 described later can be pushed up by popping out.

  The base body 30 is provided with a substantially U-shaped engaging pin 38 having flexibility. At this time, one of the engagement pins 38 (the right side in FIG. 2) is mounted so as to fit into the notch groove 36 formed on the outer periphery of the base body 30. Then, the other of the engaging pins 38 (left side in FIG. 2) is fitted into a fitting portion 56 of the left stay 50 described later to engage the left stay 50 inserted into the through hole 32 of the base body 30. Can be made. This will be described in detail later.

  The engaging pin 38 corresponds to a “biasing member” recited in the claims. Further, the fitting position of the other of the engaging pins 38 and the fitting portion 56 of the left stay 50 corresponds to “the fitting position of the stay fitting portion and the biasing member” described in the claims. 3, the height position (B).

  In addition, on the front and rear outer peripheral surfaces of the base body 30, engagement holes 34 and 34 into which the both engagement claws 22 and 22 of the cover 20 described above can be fitted are formed. Both the engagement holes 34, 34 are formed so that the upper wall surface is inclined downward toward the hole bottom (hereinafter referred to as "inclined surface 34a"). The seat back 3 is configured in this way. It should be noted that the fitting positions of the engaging claws 22 and 22 and the engaging holes 34 and 34 correspond to the “fitting positions of the engaging holes and the engaging claws” recited in the claims, and FIG. Is the height position (A).

  As is apparent from FIG. 3, the engaging positions of the engaging claws 22, 22 and the engaging holes 34, 34 are set to the other engaging pin 38 and the fitting portion 56 of the left stay 50. Is set to be higher in the height direction than the fitting position. In this description, “the fitting position of the engaging hole and the engaging claw and the fitting position of the stay fitting portion and the biasing member are set to be different in the height direction. Is equivalent to

  Next, a schematic configuration of a headrest (all of the headrests are not shown) assembled to the seat back 3 described above will be described. The headrest is composed of a pair of left and right stays 50, 50 for assembling the headrest above the seat back 3, a cushion (not shown) that wraps both the stays 50, 50, and a skin (not shown) that covers the surface of the cushion. ).

  The headrest has a mechanical mechanism (not shown) inside the cushion, and when the rod 52 suspended inside the left stay 50 is pushed up by the protrusion 42 of the inflator 40 described above, Since the mechanism is unlocked, the headrest is a so-called active headrest that allows the front side of the headrest to jump out toward the back of the occupant seated on the vehicle seat 1.

  Both stays 50, 50 are each formed in a tapered shape (hereinafter referred to as “tapered surface 54”) so that the tips thereof are tapered. Further, of the both stays 50, 50, the left stay 50 has a fitting portion 56 formed on the outer peripheral surface on the tip end side. The headrest is configured in this way.

  Next, a structure for assembling the above-described headrest to the seat back 3 and a structure for removing the assembled headrest from the seat back 3 will be described with reference to FIGS. In addition, in describing these, it shall be demonstrated from the state (state shown in FIG. 2) which attached the supports 18 and 18 to the holders 16 and 16 of the upper frame 14. As shown in FIG. In the description, only the left stay 50 is inserted / removed among the both stays 50, 50. This is because the insertion and removal of the right stay 50 is merely performed with respect to the right support 18 in conjunction with the insertion and removal of the left stay 50.

  First, the structure in which the headrest is assembled to the seat back 3 will be described. First, the through hole 32 of the base body 30 is inserted into the lower end of the left holder 16. Then, since both the engaging claws 22 and 22 of the left cover 20 are pressed by the upper edge of the base body 30, the left and right surfaces of the cover 20 bend in a direction away from each other. Further, when the through hole 32 of the base body 30 is inserted, the both engaging claws 22 and 22 of the cover 20 are fitted into the both engaging holes 34 and 34 of the base body 30, so that the base body 30 is connected to the left cover 20. It is attached to. In this way, first, the base body 30 is mounted on the left cover 20 (left holder 16) (see FIG. 3).

  Next, both stays 50 and 50 of the headrest are inserted into both supports 18 and 18. Then, as shown in FIG. 4, the tapered surface 54 at the lower end of the left stay 50 bends in the direction in which the other engagement pin 38 (left side in FIG. 4) assembled to the base body 30 is widened. As a result, the other of the engaging pins 38 gets over the tapered surface 54 of the left stay 50 (see FIG. 5).

  Further, when the both stays 50 and 50 of the headrest are inserted, the other end of the engaging pin 38 is fitted into the fitting portion 56 of the left stay 50 by the bending restoring force acting on itself (see FIG. 6). Thereby, since the left stay 50 and the base body 30 are fastened, the base body 30 can be attached to the left stay 50.

  Furthermore, when the both stays 50, 50 of the headrest are inserted, this insertion load is transmitted to the base body 30 via the engagement pin 38. Then, as already described, since the upper wall surface of the engagement hole 34 of the base body 30 is an inclined surface 34a, both the engagement holes 34, 34 of the base body 30 and both the engagement claws 22 of the cover 20 are provided. , 22 is disengaged (see FIG. 7). Thereby, it is possible to switch from the state in which the base body 30 is attached to the left cover 20 to the state in which the base body 30 is attached to the left stay 50 (see FIG. 8).

  And the height position with respect to the seat back 3 is manually adjusted for the assembled left stay 50 by the above-described height adjusting mechanism, and the assembly of the headrest is completed. In this way, the headrest can be assembled to the seat back 3. As already described, since the inflator 40 is assembled to the base body 30 so that the rod 52 at the tip of the left stay 50 can be pushed up, if a rear collision occurs in the vehicle, the front of the headrest It goes without saying that the side can be made to jump out toward the back of the occupant seated in the vehicle seat 1.

  Next, a structure for removing the headrest assembled in the above description from the seat back 3 will be described. First, the height adjusting mechanism is released, and both the stays 50, 50 of the headrest are removed from the supports 18, 18. Then, since the base body 30 attached to the left stay 50 is also lifted, the base body 30 is also attached to the left cover 20 (the left holder 16) as in the description of FIGS. (See FIG. 9).

  When the state is returned to this state, both the engaging claws 22 and 22 of the cover 20 are attached to the engaging holes 34 and 34 of the base body 30 even if both the stays 50 and 50 of the headrest are removed. The pulling load causes the other side (left side in FIG. 9) of the engaging pin 38 to bend in the direction of widening. As a result, the other of the engagement pins 38 gets over the notch groove 36 of the left stay 50, so that only the both stays 50, 50 of the headrest are pulled out from both supports 18, 18. In this way, the headrest can be removed from the seat back 3.

  The headrest assembly structure according to the embodiment of the present invention is configured as described above. According to this configuration, the base body 30 to which the inflator 40 is attached can be attached to the left cover 20 before the back frame 10 is covered with the cushion and the skin. Therefore, unlike the prior art, the base body 30 to which the inflator 40 as a standby member is attached can be easily assembled, so that the headrest can be assembled efficiently.

  Further, according to this configuration, the fitting position between the both engaging claws 22 and 22 and the both engaging holes 34 and 34 is higher than the fitting position between the other engaging pin 38 and the fitting portion 56 of the left stay 50. It is set to be a high position in the vertical direction. Therefore, the size of the cover 20 and the base body 30 in the radial direction (the radial direction of the stay 50) can be made compact.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, the example in which the urging member is the substantially U-shaped engaging pin 38 having flexibility has been described. However, it is not limited to this. Even a simple pin that does not have flexibility, a spring may be provided, and a biasing force may be applied to the pin like the engagement pin 38 by this spring.

  Moreover, in the Example, the base body 30 equipped with the inflator 40 was described as an example of the standby member. However, it is not limited to this, For example, you may be the base body 30 which mounted | wore with the female connector. In this case, a male connector that can accommodate this female connector is provided in the left stay 50 in place of the rod 52.

  In the embodiment, an active type headrest is described as an example of the headrest. However, the present invention is not limited to this, and an inactive type headrest may be used. In this case, for example, a male connector is provided in the left stay 50 in place of the rod 52, and a female connector that can handle this male connector is provided in place of the inflator 40.

3 Seat back 18 Support (holding member)
20 Cover 22 Engaging claw 30 Base body (standby member)
34 Engagement hole 38 Engagement pin (urging member)
50 stay 56 fitting part

Claims (2)

When the headrest stay is inserted into the holding member assembled to the seat back and the headrest is assembled to the seat back, the seat back side standby member can be assembled with the stay waiting,
The holding member is assembled with a cover to which a standby member can be attached,
The standby member is assembled with a biasing member that can be fitted into a fitting portion formed in the stay,
When the stay is inserted into the holding member in a state where the standby member is mounted on the cover so that the standby member is in the standby state, the biasing member is fitted into the fitting portion of the stay so that the standby member is When the stay is inserted into the holding member in this attached state, the standby member is detached from the cover and attached to the stay only. Assembling structure of headrest. The headrest assembly structure according to claim 1,
The standby member is formed with an engagement hole or an engagement claw,
The cover is formed with an engagement claw or engagement hole that can be fitted into the engagement hole or engagement claw of the standby member,
The standby member is attached to the cover by fitting the engagement hole and the engagement claw,
An assembly structure of a headrest, wherein the fitting position between the engaging hole and the engaging claw and the fitting position between the fitting part of the stay and the biasing member are set to be different in the height direction.

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