JP2015013594A - Hinge cover attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge cover attaching structure which can prevent unexpected coming-off without impairing workability at assembling.SOLUTION: A hinge bracket (5) for pivotably supporting a seat back is equipped with a base end portion (5a) fixed to a cushion frame or a vehicle body, a journal shaft attaching portion (57), and a locking hole (50) opened between the base end portion and the journal shaft attaching portion. A hinge cover (6) for covering the hinge bracket is integrally equipped with: a hooking portion (61) locked to an edge portion on a tip end side of the hinge bracket; and a clamp portion (63) protrusively provided on a back surface of the hinge cover in a retractable manner through an elastic coupling portion (66), and engaged with a first edge (50a) on the hooking portion side of the locking hole in a projecting state. On a back surface side of the hinge cover, a hook portion (65) capable of locking to a second edge (50b) positioned on the opposite side to the hooking portion of the locking hole is protrusively provided.

Description

  The present invention relates to a hinge cover mounting structure for a vehicle seat, and more particularly to a hinge cover mounting structure for preventing accidental removal.

  A vehicle seat has a lower seat back pivotally supported by a hinge bracket on the rear part (or body floor) of the seat cushion, and can be reclined (tilted backward and laid down forward). The door side) hinge bracket is provided with a locking mechanism that locks the seat back tilt angle and its release lever, but the other (usually the center side) is composed only of the hinge bracket, and its surface is a hinge cover. Covered.

  Cited Document 1 discloses a mounting structure in which two outer claws formed on the peripheral edge portion of the hinge cover and two inner claws formed inside are pushed and locked. However, if the rigidity of the outer and inner claws is increased to prevent unexpected withdrawal, there is a problem that the assemblability deteriorates.

  In order to solve this problem, it has been considered to provide a clamp (pressing member) that can be moved in and out instead of one locking means, and to attach the hinge cover by sliding it from a specific direction, for example, from above. FIG. 4 shows the vehicle seat 1 as a premise thereof, and a lower portion of the seat back 2 is pivotally supported by a hinge shaft 7 of a hinge bracket 15 fixed to the cushion frame 4 of the seat cushion 3. The hinge bracket 15 is made of a sheet metal press-molded product, and a hinge cover 16 made of a resin molded product covering the surface is mounted.

  As shown in FIG. 5B, the hinge cover 16 is attached to the hinge bracket 15 so that the upper end of the hinge cover 16 is hooked on the upper edge of the hinge bracket 15 and protrudes from the back surface side. The hinge bracket 15 is held between the clamp part 63 and the latching part 61 by engaging the clamp part 63 with the edge of the locking hole 50.

  The clamp portion 63 is provided so as to be elastically movable relative to the back surface side of the hinge cover 16. When the clamp portion 63 is assembled to the hinge bracket 15, the clamp portion 63 is retracted so that the locking hole 50 can be easily formed. On the other hand, if the occupant's fingers are hooked on the lower part of the hinge cover 16 and the entire finger is pulled, the hinge cover 16 can move upward, and there is a problem that the hinge cover 16 is pulled out.

Japanese Patent No. 3847014

  The present invention has been made in view of such a state of the prior art, and an object of the present invention is to provide a hinge cover mounting structure that can prevent unintentional removal without impairing workability during assembly. There is to do.

In order to solve the above-described problems of the prior art, the present invention provides:
A hinge cover mounting structure that covers a hinge bracket that pivotally supports a seat back,
The hinge bracket (5) has a base end portion (5a) fixed to the cushion frame or the vehicle body, a pivot shaft mounting portion (57), and an opening between the base end portion and the pivot shaft mounting portion. The hinge cover (6) includes a latching portion (61) that is locked to an edge portion on a front end side of the hinge bracket, and an elastic surface on the back surface of the hinge cover. And a clamp portion (63) that protrudes through the connecting portion (66) so as to protrude and engage with the first edge (50a) of the locking hole on the side of the engaging portion in the protruding state. In what we have,
A hook portion (65) that can be locked to a second edge (50b) located on the opposite side of the hooking portion of the locking hole is provided on the back surface side of the hinge cover. .

  As described above, the hinge cover mounting structure according to the present invention prevents the hinge cover from being separated by locking the hook portion (65) with respect to the second edge of the locking hole. Even when the occupant's finger is caught on the hook, the engagement of the clamp portion (65) with the first edge of the locking hole is maintained, the upward movement of the hinge cover is prevented, and the hinge bracket is not pulled out. Is prevented. Since the hook portion does not act on the hook in the vertical direction and basically has strength against the tensile force in the separation direction, the hook portion can be implemented with a slight change to the existing shape.

  In a preferred aspect of the present invention, a guide groove (55) capable of receiving the hook portion is formed from a part of the first edge of the locking hole of the hinge bracket toward the hooking portion side. Therefore, there is an advantage that the positioning accuracy at the time of assembly is improved and workability is improved.

  In a preferred aspect of the present invention, the hinge cover further includes a second hooking portion (62) locked to a side edge portion of the hinge bracket, and at least the second hooking portion is formed on the side edge portion. Since the guide groove (55) is formed so that the hook portion is received at a position where the hook portion starts to be locked, even when the second hooking portion whose vertical position is close to the hook portion is set. There is an advantage that the interference between the hook portion and the hinge bracket is prevented, and the workability is favorably maintained.

  In a preferred aspect of the present invention, the clamp part (63) is connected to a protruding piece part (64) protruding from the back surface of the hinge cover via an elastic connecting part (66), And since the said hook part (65) protrudes from the said protruding piece part, of course, a protruding piece part is shared by a clamp part and a hook part, and of course it can implement by the slight change with respect to the existing shape. The dimensional accuracy between the clamp part and the hook part can be easily secured and is advantageous in terms of strength.

  In a preferred aspect of the present invention, the protruding piece portion (64) is composed of a pair of protruding piece portions (64) provided on both sides of the clamp portion, and the clamp portion includes the pair of protruding piece portions on both sides thereof. Each of the hooks (65) protrudes from the pair of protrusions (64), and is thus connected to the two hooks. In addition to the stress distribution and strength advantage, one clamp part and two hook parts are engaged with the locking hole at three points, so that a stable engagement state can be obtained. There is also.

It is the perspective view (a) which looked at the hinge bracket which concerns on this invention from the front side, and the perspective view (b) which looked at the hinge cover from the back side. It is the perspective view seen from the back side which shows the attachment process (a) and attachment state (b) to the hinge bracket of the hinge cover which concerns on this invention embodiment. It is a longitudinal section in the state where the hinge cover concerning the embodiment of the present invention was attached to the hinge bracket. It is a perspective view which shows attachment of the hinge cover to the hinge bracket of the vehicle seat used as the premise of this invention. It is the perspective view (a) and longitudinal cross-sectional view (b) which show the attachment state to the hinge bracket of the hinge cover used as the premise of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 4 and FIG. 5 are denoted by the same reference numerals, and the description thereof will be omitted, and the following description will focus on the changes.

  As shown in FIG. 1 (a), the hinge bracket 5 has a hole 57 through which a bolt 7 serving as a hinge shaft is inserted at the front end side of the locking hole 50 at the middle portion in the vertical direction of the central flat portion 5a. It is fixed to the cushion frame 4 by welding below the locking hole 50 (base end side). The outer peripheral portion excluding the lower end of the central flat portion 5a is formed with a press-molded side edge portion 5b having a U-shaped cross section so that the hinge bracket 5 is ensured in strength and rigidity.

  The locking hole 50 of the hinge bracket 5 according to the present invention is formed on the first edge 50a with respect to a rectangular basic shape including the first edge 50a positioned at the upper side and the second edge 50b positioned at the lower side in the figure. Guide grooves 55 are formed upward from both sides.

  As shown in FIG. 1B, the hinge cover 6 is formed with a side wall portion 6b covering the side wall portion 5b of the hinge bracket 5 at a peripheral portion except the lower end of the central flat portion 6a. A first latch piece 61 extends from the upper end portion (front end portion) toward the back side of the hinge bracket 5, and a pair of second latch pieces 62 similarly extend from the lower portions on both sides of the side wall portion 6 b. ing.

  A clamp portion 63 is provided at a substantially lower center of the central flat portion 6 a of the hinge cover 6. The clamp portion 63 has a block shape having a flat upper surface extending toward the tip protruding in a wedge shape, and has a gap on both sides of the side surface, and a pair of projecting pieces from the back surface side of the hinge cover 6. A portion 64 (side wall portion) protrudes and is formed integrally with the lowermost end of the tip and an elastic connecting portion 66 (integral hinge), and a gap 60 is also provided between the central flat portion 6a. It has been. That is, the clamp part 63 swings according to the elastic deformation around the pair of elastic coupling parts 66 functioning as torsion springs, and is provided so as to be able to protrude and retract in the direction away from the central flat part 6a.

  The hinge cover 6 according to the present invention includes a pair of hook portions 65 projecting from the tips of the pair of projecting piece portions 64. The hook portion 65 extends linearly in a direction away from the central flat portion 6a of the hinge cover 6, and a downward hook is formed at the tip thereof. The hinge cover 6 is integrally formed by injection molding using a resin material, including the hook portion 65, the elastic connecting portion 66, and the clamp portion 63.

  When the hinge cover 6 formed as described above is attached, the hinge cover 6 is positioned above the hinge bracket 5 as shown in FIG. 62 is engaged with the back side of the hinge bracket 5 and the hook portion 65 faces the guide groove 55, the clamp portion 63 is pressed against the central flat portion 5 a of the hinge bracket 5, Push against the elastic recovery force.

  Next, when the hook portion 65 is engaged with the guide groove 55, the back surface of the central flat portion 6 a of the hinge cover 6 contacts the side edge portion 5 b of the hinge bracket 5. In this state, when the hinge cover 6 is slid downward and the clamp part 63 reaches the locking hole 50, the clamp part 63 protrudes due to the elastic recovery force of the elastic connecting part 66 as shown in FIG. The hook 65 is locked to the second edge 50b of the locking hole 50, and the first hook 61 is hooked to the tip of the hinge bracket 5 at the same time.

  In such an attached state, as shown in FIG. 3, even if the occupant's fingers are suddenly hooked on the lower part of the hinge cover 6, they are locked in the locking holes 50 (second edges 50 b) of the hinge bracket 5. Since the hook portion 65 prevents the hinge cover 6 from being separated from the hinge bracket 5, the engagement of the clamp portion 63 with respect to the locking hole 50 (first edge 50 a) is maintained. The upward movement is also prevented, and the hinge cover 6 is prevented from being pulled out.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
For example, in the above-described embodiment, the case where the first hooking portion 61 and the second hooking portion 62 are separately provided has been described, but these may be provided in series or the second hooking portion 62. May be omitted.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 4 Cushion frame 5 Hinge bracket 5a Center flat part 5b Side edge part 6 Hinge cover 6a Center flat part 6b Side wall part 50 Locking hole 50a 1st edge 50b 2nd edge 57 hole (hinge Shaft mounting part)
61 1st hook part 62 2nd hook part 63 Clamp part 64 Projection piece part 65 Hook part 66 Elastic connection part

Claims (5)

A hinge cover mounting structure that covers a hinge bracket that pivotally supports a seat back,
The hinge bracket includes a base end portion fixed to the cushion frame or the vehicle body, a pivot shaft attaching portion, and a locking hole opened between the base end portion and the pivot shaft attaching portion. The hinge cover is provided with a latching portion that is locked to the edge of the hinge bracket on the front end side, and a rear surface of the hinge cover that protrudes and protrudes through an elastic connecting portion, and is locked in a protruding state. In the case of integrally including a clamp portion that engages with the first edge of the hole on the side of the latching portion,
On the back side of the hinge cover, a hook portion that can be locked to a second edge located on the opposite side of the hooking portion of the locking hole protrudes, and the hook with respect to the second edge of the locking hole The hinge cover mounting structure is structured such that the hinge cover is prevented from being separated by locking the portion.   The guide groove that can receive the hook portion is formed from a part of the first edge of the locking hole of the hinge bracket toward the hooking portion side. Hinge cover mounting structure.   The hinge cover further includes a second hooking portion that is locked to a side edge portion of the hinge bracket, and at least the second hooking portion starts to be locked to the side edge portion, and the hook portion is The hinge cover mounting structure according to claim 2, wherein the guide groove is formed so as to be received.   The clamp part is connected to a protruding piece part protruding from the back surface of the hinge cover via an elastic connecting part, and the hook part protrudes from the protruding piece part. The attachment structure of the hinge cover as described in any one of Claims 1-3 characterized by these.   The projecting piece part is composed of a pair of projecting piece parts projecting on both sides of the clamp part, and the clamp part is connected to the pair of projecting part parts on both sides via the elastic connecting part. The hinge cover mounting structure according to claim 4, wherein the hook portion protrudes from the pair of protruding piece portions.

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