JP5547991B2 - Headrest holding pole guide and car seat - Google Patents

Description

  The present invention relates to a headrest holding pole guide for holding a pole provided on a headrest and an automobile seat.

  2. Description of the Related Art Conventionally, a headrest holding pole guide for holding a pole provided on a headrest provided in an automobile seat has been widely known. This includes a shaft portion having a length substantially the same as the axial length of the cylindrical guide mounting portion provided on the seat back frame of the seat back, a flange provided on the upper end side of the shaft portion, and the shaft portion. And a retaining portion provided on the lower end side. Then, the pole guide for holding the headrest is inserted from the upper opening of the guide mounting portion, and the retaining portion is taken out from the lower opening. As a result, the retaining portion of the headrest holding pole guide can be hooked to the lower end of the guide mounting portion to prevent the headrest holding pole guide from coming off, and the headrest holding pole guide can be attached to the guide mounting portion.

Japanese Utility Model Publication No. 60-38914

  By the way, if the axial lengths of the headrest holding pole guide and the guide mounting portion are too short, the holding strength of the headrest holding pole guide with respect to the guide mounting portion becomes weak and difficult to hold. Further, if the difference in diameter between the outer periphery of the shaft portion of the headrest holding pole guide and the guide mounting portion becomes too large, the headrest holding pole guide rattles against the guide mounting portion and is difficult to hold. Therefore, in order to securely hold the headrest holding pole guide, the length of the guide mounting portion and the headrest holding pole guide in the axial direction is increased to some extent, and the difference in diameter between the two is not so great. .

  However, as described above, the length of the guide mounting portion and the headrest holding pole guide in the axial direction is long to some extent, and the difference in diameter between the two is not so large. When inserting the headrest holding pole guide from the upper opening to the lower opening of the guide mounting part due to dimensional error or distortion of both, it is difficult to insert the headrest holding pole guide into the guide mounting part. There is a problem that there are cases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a headrest holding pole guide and an automatic seat that can reliably hold a headrest holding pole guide and can be easily assembled to a guide mounting portion.

In order to solve the above-mentioned problem, the invention of claim 1 is directed to a headrest that is attached to a cylindrical guide attachment portion provided on a seat back and that is provided with a pole provided on the headrest and that holds the inserted pole. A holding pole guide, comprising: a cylindrical first pole guide through which the pole is inserted; and a cylindrical second pole guide configured separately from the first pole guide, The first pole guide is attached to the upper end of the guide attachment portion, the second pole guide is attached to the lower end of the guide attachment portion, and the pole inserted through the first pole guide is the second pole. is configured to guide so as to insert, wherein the first pole guide and the second pole guide, respectively, the length in the axial direction, the guide mounting portion To provide a headrest holding pawl guide, characterized in that is shorter than the axial length.

According to a second aspect of the present invention, in the pole guide for holding the headrest according to the first aspect, the first pole guide is inserted into the upper opening of the guide mounting portion from the upper side so as to be inserted at the upper end of the guide mounting portion. The second pole guide is attached to the lower end of the guide attachment portion so as to be inserted into the lower opening of the guide attachment portion from the lower side, and the first pole guide, the second pole guide, Is configured such that a gap is formed between the first pole guide and the second pole guide in a state of being attached to the guide attaching portion .

  According to a third aspect of the present invention, there is provided an automobile seat comprising the headrest holding pole guide according to the first or second aspect and a seat back to which the headrest holding pole guide is attached. This solves the above problem.

  According to the first aspect of the present invention, the first pole guide and the second pole guide may be attached to the upper end of the guide mounting portion and the second pole guide to the lower end of the guide mounting portion, respectively. The axial length of can be shortened. As a result, the headrest holding pole guide can be easily attached to the guide mounting portion.

  The first pole guide can be held at the upper end position of the guide mounting portion, and the second pole guide can be held at the lower end position of the guide mounting portion, respectively, so that the headrest pole can be held securely.

  According to the second aspect, the first pole guide is attached to the upper end of the guide attachment portion so as to be inserted into the upper opening of the guide attachment portion from above, and the second pole guide is provided below the guide attachment portion. It is attached to the lower end of the guide attachment portion so as to be inserted into the opening portion from below.

  Thereby, attachment to the guide attachment part of a 1st pole guide and a 2nd pole guide can be made still easier.

  According to the third aspect of the present invention, it is possible to provide an automobile seat that can reliably hold the headrest holding pole guide and can easily attach the headrest holding pole guide to the guide mounting portion.

It is the perspective view which decomposed | disassembled the pole guide for headrest holding | maintenance of one Embodiment of this invention, and a part of seat back frame. It is a perspective view of a part of the seat back frame in a state in which the headrest holding pole guide is assembled. It is a front view of a part of the seat back frame in a state in which the pole guide for holding the headrest of the present invention is assembled. It is the IV-IV sectional view taken on the line of FIG. It is sectional drawing of the 1st pole guide of a right pole guide. It is explanatory drawing at the time of making the headrest holding pole guide assembled | attached to the seatback frame of the seatback hold | maintain the pole of a headrest.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a headrest holding pole guide and a part of a seatback frame according to an embodiment of the present invention, and FIG. 2 is a part of the seatback frame in a state in which the headrest holding pole guide is assembled. FIG. 3 is a front view of a part of the seat back frame in a state in which the headrest holding pole guide is assembled, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

  As shown in FIG. 6, the seat 1 having the headrest holding pole guides 2 and 3 according to the present invention includes a seat back 10 and a seat cushion (not shown). The seat back 10 includes a pipe-like seat back frame 11 therein.

  The seat back frame 11 is provided with an upper piece 12 that extends in the left-right direction and is arranged horizontally in the upper part thereof. As shown in FIGS. 1 and 2, the upper piece 12 is provided with a pair of left and right left guide attachment portions 13 and a right guide attachment portion 14 for attaching the headrest holding pole guides 2 and 3.

  In this embodiment, the left guide mounting portion 13 and the right guide mounting portion 14 are each made of a metal rectangular tube having the same shape. The left guide mounting portion 13 and the right guide mounting portion 14 of this embodiment are constituted by those having an axial length of about 50 mm.

  These guide attachment portions 13 are welded to the seat back frame 11 so that the axial directions thereof are substantially in the vertical direction at substantially the same pitch intervals as the pitch intervals of the two poles 101 of the headrest 100 shown in FIG. It is being fixed by fixing means, such as.

  The headrest holding pole guides 2 and 3 include a left pole guide 2 detachably attached to the left guide attachment portion 13 and a right pole guide 3 detachably attached to the right guide attachment portion 14. ing.

  The left pole guide 2 includes a cylindrical first pole guide 21 and a cylindrical second pole guide 22 formed separately from the first pole guide 21. Each of the first pole guide 21 and the second pole guide 22 has an axial length shorter than the axial length of the left guide mounting portion 13.

  The first pole guide 21 includes a quadrangular head portion 21a, a shaft portion 21b, and a first pole guide hole 21c through which the pole 101 of the headrest 100 is inserted.

  The shaft portion 21b includes an upper end surface contact portion 21d that contacts the upper end surface of the left guide mounting portion 13, and a first pole guide that is formed below the upper end surface contact portion 21d and fits into the left guide mounting portion 13. A fitting portion 21e is provided.

  In this embodiment, the upper end surface abutting portion 21 d is formed over the entire circumference of the shaft portion 21 b and is configured to abut on the entire circumference of the upper end surface of the left guide attachment portion 13.

  The first pole guide insertion portion 21e was fitted with a sliding piece 21f that slides on the inner periphery of the left guide mounting portion 13 when the first pole guide insertion portion 21e is inserted into the left guide mounting portion 13. A retaining piece 21g for preventing the first pole guide fitting portion 21e from being detached from the left guide attaching portion 13 is provided.

  In this embodiment, the sliding piece 21f is composed of four pieces provided at four locations in the circumferential direction, each extending from the upper end surface contact portion 21d to the lower end side along the axial direction. Yes. Further, when the sliding piece 21f slides in the axial direction on the inner periphery of the left guide mounting portion 13, the axis of the left guide mounting portion 13 and the axis of the first pole guide hole 21c coincide.

  The retaining piece 21g is connected to the first pole guide insertion portion 21e and has elasticity at the lower end side, and enters the engagement hole 13a provided in the left guide attachment portion 13 on the upper side. An engaging claw 21h is provided.

  The engaging claw 21h protrudes radially outward from the outer periphery of the first pole guide fitting portion 21e in a normal state where no external force is applied, and when the external force is applied in the radially inward direction, the retaining piece 21g is elastic. Thus, the first pole guide fitting portion 21e can enter the radially inward direction from the outer periphery.

  The first pole guide hole 21c is formed so as to penetrate in the axial direction from the head portion 21a to the shaft portion 21b.

  As shown in FIG. 4, the first pole guide 21 configured in this way has a first pole guide insertion portion 21 e of the shaft portion 21 b above the upper opening 13 b provided in the left guide mounting portion 13. From the side, it is pushed in against the elasticity of the retaining piece 21g.

  At that time, the first pole guide insertion portion 21e of the first pole guide 21 may be inserted only into the upper portion of the left guide mounting portion 13 and can be easily inserted.

  As shown in FIGS. 2 and 3, when the upper end surface contact portion 21 d contacts the upper end surface of the left guide mounting portion 13, the engaging claw 21 h is almost simultaneously locked with the locking hole of the left guide mounting portion 13. The first pole guide 21 is attached to the upper side of the left guide attachment portion 13 in this state.

  As shown in FIG. 1, the second pole guide 22 includes a first pole guide hole 22 c through which the pole 101 of the headrest 100 is inserted. The first pole guide hole 22c is opened in the axial direction so as to penetrate from the upper surface to the lower surface.

  The second pole guide 22 is provided with a lower end surface contact portion 22d and a second pole guide fitting portion 22e.

  The lower end surface abutting portion 22 d is formed over the entire circumference of the second pole guide 22 in the same manner as the upper end surface abutting portion 21 d of the first pole guide 21, and the entire circumference of the lower end surface of the left guide mounting portion 13. It comes to contact with.

  The second pole guide fitting portion 22e is formed on the upper side of the lower end surface contact portion 22d and is fitted into the left guide mounting portion 13. Further, on the outer periphery of the second pole guide insertion portion 22e, similarly to the first pole guide insertion portion 21e, a sliding piece 22f sliding in the axial direction on the inner periphery of the left guide mounting portion 13; A retaining piece 22g that is retained by the inserted left guide mounting portion 13 is provided.

  The sliding piece 22f and the locking piece 22g have substantially the same configuration as that of the first pole guide 21. Specifically, the sliding piece 22f is composed of four pieces provided at four locations in the circumferential direction, and each extends upward from the lower end surface contact portion 22d along the axial direction. Further, when the sliding piece 22f slides on the inner periphery of the left guide mounting portion 13, the axis of the left guide mounting portion 13 and the axis of the second pole guide hole 22c coincide.

  The upper end side of the retaining piece 22g is connected to the first pole guide insertion portion 22e and has elasticity, and is engaged with an engagement hole 13a provided in the left guide attachment portion 13 on the lower side. An engagement claw 22h is provided.

  The engaging claw 22h protrudes radially outward from the outer periphery of the second pole guide fitting portion 22e in a normal state where no external force is applied, and when the external force is applied in the radially inward direction, the retaining piece 22g is elastic. Thus, it is possible to enter the radial inward direction from the outer periphery of the second pole guide insertion portion 22e.

  As shown in FIG. 4, the second pole guide 22 configured as described above has a second pole guide fitting portion 22 e, which is a retaining piece from the lower side to the lower opening 13 c provided in the left guide mounting portion 13. It is pushed in against the elasticity of 22 g.

  At that time, the second pole guide insertion portion 22e of the second pole guide 22 need only be inserted into the lower portion of the left guide mounting portion 13 and can be easily inserted.

  As shown in FIGS. 2 and 3, when the lower end surface contact portion 22 d contacts the lower end surface of the left guide mounting portion 13, almost simultaneously, the retaining piece 22 g becomes the locking hole 13 a of the left guide mounting portion 13. The second pole guide 22 is attached to the lower portion of the left guide attachment portion 13 in this state.

  Next, the right pole guide 3 will be described. As with the left pole guide 2, the right pole guide 3 includes a first pole guide 31 and a cylindrical second pole guide 32 that is formed separately from the first pole guide 21.

  Similar to the first pole guide 21 of the left pole guide 2, the first pole guide 31 in the right pole guide 3 includes a head portion 31a, a shaft portion 31b, and a first pole guide hole 31c. The shaft portion 31b and the first pole guide hole 31c have the same configuration as that of the first pole guide 21, respectively.

  Further, the first pole guide 31 of the right pole guide 3 of this embodiment further includes locking means for locking the pole 101 of the headrest 100 so as to be detachable.

  As shown in FIG. 5, the locking means is provided on the head portion 31 a of the first pole guide 31, and urges the operation portion 41 and the operation portion 41 movably disposed on the head portion 31 a. And a coil spring 42 as an urging member.

  The operation unit 41 includes an operation main body 43 and a locking piece 44 held by the operation main body 43. The operation main body 43 is disposed on the head 31a so as to be movable in the left-right direction. When the operation main body 43 is moved, the locking piece 44 is moved from the left side position of the first pole guide hole 31c to the first position. The range up to the protruding position shown in FIG. 5 protruding into the pole guide hole 31c is movable. When the locking piece 44 moves to the protruding position, the locking piece 44 enters one of the plurality of locking grooves 101a provided in the pole 101 of the headrest 100 and is locked.

  The coil spring 42 urges the operating portion 41 to the right in the head portion 31a, and the urging force of the coil spring 42 causes the locking piece 44 to be disposed at the protruding position and locked in the locking groove 101a. It is designed to maintain the state.

  Further, when the operation main body 43 is pressed to the left side against the urging force of the coil spring 42, the locking piece 44 moves from the protruding position to the left side position of the first pole guide hole 31c. The locking is released from the locking groove 101a. In this state, the pole 101 of the headrest 100 can move up and down with respect to the first pole guide 31 in the right pole guide 3 and the vertical position of the headrest 100 can be adjusted.

  The second pole guide 32 of the right pole guide 3 has the same configuration as the second pole guide 22 of the left pole guide 2. Specifically, as shown in FIG. 1, the second pole guide 32 includes a second pole guide hole 32c. The second pole guide 32 is provided with a lower end surface contact portion 32d and a second pole guide fitting portion 32e.

  Note that the first pole guide 31 and the second pole guide 32 of the right pole guide 3 are attached to the right guide mounting portion 14 by using the first pole guide 21 and the second pole guide 22 of the left pole guide 2 as a left guide. This can be carried out in the same manner as when attached to the attachment portion 13.

  In the above embodiment, the first pole guide 31 of the right pole guide 3 is provided with the locking means for locking the pole 101 of the headrest 100. However, the present invention is not limited to this configuration and can be changed as appropriate.

  For example, the locking means is provided in the first pole guide 21 of the left pole guide 2 instead of the first pole guide 31 of the right pole guide 3, or the first pole guide 31 and the left pole guide 2 of the right pole guide 3 are provided. The first pole guide 21 may be provided on both. Moreover, the thing of the form which does not provide a latching means may be sufficient.

DESCRIPTION OF SYMBOLS 1 Seat 2, 3 Headrest holding pole guide 10 Seat back 11 Seat back frame 13, 14 Guide mounting part 21, 31 First pole guide 22, 32 Second pole guide 100 Headrest 101 pole

Claims (3)

A pole guide attached to the cylindrical guide mounting portion provided on the seat back and inserted into the pole provided on the headrest, and a headrest holding pole guide for holding the inserted pole,
A cylindrical first pole guide through which the pole is inserted, and a cylindrical second pole guide configured separately from the first pole guide;
The first pole guide is attached to an upper end of the guide attaching portion,
The second pole guide is attached to a lower end of the guide attachment portion, and is configured such that the pole inserted through the first pole guide can be inserted through the second pole guide .
The first pole guide and the second pole guide each have a length in the axial direction shorter than the length in the axial direction of the guide mounting portion. . The first pole guide is attached to the upper end of the guide attachment portion so as to be inserted into the upper opening of the guide attachment portion from above.
The second pole guide is attached to the lower end of the guide attachment portion so as to be inserted into the lower opening of the guide attachment portion from below.
In the state where the first pole guide and the second pole guide are attached to the guide attaching portion, a gap is formed between the first pole guide and the second pole guide. The headrest holding pole guide according to claim 1, wherein   3. A vehicle seat comprising the headrest holding pole guide according to claim 1 and a seat back to which the headrest holding pole guide is attached.

Images