JP4939479B2 - Seat locking device - Google Patents

Description

  The present invention relates to an automobile seat locking device, and more particularly to a seat locking device that locks a forward-turning seat back to a vehicle body.

  As shown in FIG. 5, some rear seats for automobiles include a seat back SB having a wide lateral width and a narrow seat back SB ′. SC shows a seat cushion in the figure.

  Each of the seat backs SB and SB ′ is provided with locking devices B and B ′ on the upper side surface, and locked to the strikers 6 and 6 provided on the vehicle body wall surfaces 60 and 60 by the locking devices B and B ′. It is formed as follows.

  The above locking devices B and B ′ are operated by operating the unlocking operation levers A and A ′ provided above the locking devices B and B ′ so that the seat backs SB and SB ′ are tilted forward. Luggage can be loaded on the back of the fallen seat backs SB and SB '.

  By the way, the locking devices B and B ′ are interposed between a back plate and a base plate that are integrally fastened to the frame side of the seat back as disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-108743. The lock unit is formed of a latch that is rotated by the operating force of the operating lever.

  The above locking device B uses a device that has increased rigidity and rigidity with respect to the locking device B ′ by increasing the plate thickness, the wall thickness, and the like.

This is because, in the locked state, when a front impact load is applied, the abutting area of a luggage or the like behind the wide seat back SB is larger than the narrow seat back SB ′.
JP 2000-108743 A

  Therefore, when the above locking devices B and B ′ are used in common and are shared by the left and right seat backs SB and SB ′, it may be difficult to arrange the lock unit in view of the layout.

  On the other hand, if the seatback is thinned and a low-rigidity lock unit, such as a sedan, is used in the locking device for the left and right seatbacks SB and SB ', the strength of the lock unit alone (particularly the partition wall strength) ) Is insufficient.

  Therefore, the present invention increases the partition wall strength without increasing the size of the lock unit, and can be used as a locking device for the wide seat back and can be used in common with the downsized lock unit. With the goal.

To achieve the above object, the present invention provides a seat locking device having a latch that engages with a striker on the vehicle body side on a back plate provided on the seat back side.
A reinforcing patch is disposed on the outer side of the back plate, and the reinforcing patch includes a main body joined to the outer side of the back plate, and a bent portion that is bent at a substantially right angle from one side of the main body. The folding part is fastened to the seat side together with the back plate and directly to the seat side .

It is preferable that a base plate for storing the latch is provided, and a spacer adjacent to a side surface of the latch is provided between the base plate and the latch.

A base plate for storing the latch is provided, and a spacer is provided between the base plate and the latch so as to be close to a side surface of the latch.
A reinforcing patch is disposed outside the back plate, the reinforcing patch is fastened to the seat side together with the back plate, and the side portion of the reinforcing patch is fastened directly to the seat side.

  The reinforcing patch is preferably fastened to the seat side together with the back plate and the base plate.

  According to the locking device of the present invention, even when an impact load such as a collision acts on the seat back in the locked state, the impact load can be dispersed by the reinforcing patch, and the partition wall strength of the lock unit can be increased. Therefore, the lock device itself can be reduced in size and shared with a small lock unit for the sedan or the like.

  In addition, by providing a spacer between the base plate and the latch, there is no torsion space of the latch between the base plate and the latch, so that deformation such as inclination of the latch can be prevented by the spacer when a load is input. Therefore, the partition wall strength of the lock unit can be further increased.

  Hereinafter, an embodiment of a seat locking device according to the present invention will be described with reference to FIGS.

  The seat locking device B shown in the figure is arranged on the wide seat back SB of the rear seat shown in FIG. 5, and the latch is vertically moved to the substantially U-shaped striker 6 provided substantially horizontally on the vehicle body wall surface 60. By engaging the seat back SB, the seat back SB is held in a seatable state.

  This locking device B is fixed to the upper part of the vehicle body wall surface 60 side of the seat back SB, and an insertion part B1 into which the striker 6 is inserted is formed in a U-shaped notch on the rear side, and is provided on the upper part of the seat back SB. By operating the lever, the latch rotates to unlock the striker 6, and the seat back SB can be tilted forward.

  The illustrated sheet locking device B according to the present invention includes a reinforcing patch 1, a base plate 2, a back plate 3, a latch 30, a spacer 7, and the like. However, the base plate 2 is not necessarily required.

  The base plate 2, the back plate 3, and the latch 30 are used for a conventional downsized lock unit, and the parts are shared.

  That is, as shown in FIG. 4, the latch 30 is provided on the back plate 3 side so as to be pivotable in the vertical direction, and the latch 30 is sandwiched between the spacers 7 on the base plate 2 side. A locking plate 35 and a cam mechanism 36B for locking the latch 30 in the engaged state with the striker 6 are provided.

  In the figure, reference numeral 31 denotes a rotating shaft of the latch 30 around which a spring 32 is urged to urge the latch 30 in a direction to engage the striker 6. In the figure, reference numeral 33 denotes a rotating shaft of the locking plate 35 around which a spring 34 for urging the locking plate 35 in the direction in which the latch 30 is engaged is wound. In the figure, 36A is a rod for connecting the operating lever and the cam mechanism 36B, and 39 is a bent portion bent at a right angle to the front end edge. One end of a garnish (not shown) of the locking device is connected to the bent portion 39. A locking hole 39A to be locked is provided. In the drawing, 37 and 38 are fastening portions fastened to the seat back side, and fastening holes 37A and 38A are opened.

  A spacer 7 is fixed to the base plate 2 as described above. As shown in FIGS. 2 and 3, the spacer 7 is disposed so as to be close to the side surface of the latch 30 so as to have a small gap, and the twist of the latch 30 is increased. The space is closed.

  In the figure, 21A is a through-hole for inserting the rotation shaft 31 of the latch 30, 23A is a through-hole for inserting the rotation shaft 34 of the locking plate 35, 27 and 28 in the figure are the back plate 3 and the reinforcing patch 1. At the same time, fastening holes 27A and 28A are opened at fastening portions fastened to the seat back side. Reference numeral 7A denotes a mounting hole for the spacer 7.

  The frame structure constituting the seat back SB is provided with a bracket 4 for fastening the locking device B with bolts 80, 80, 81, 81. As shown in FIGS. The front bracket 40 is located on the side surface side of the seat back SB, and the rear bracket 41 is integrated with the front bracket 40 and is located on the back side of the seat back SB. A part of the rear bracket 41 is inserted and locked between the rear panel frames 50 and 50 before being welded to the pipe frame 51. In the figure, A 'indicates a mounting portion of an operation lever for unlocking, and 49A and 49A in the figure indicate locking holes for locking the other end of the garnish (not shown).

  The rear bracket 41 is provided with fastening holes 41A, 41A for fastening the reinforcing patch 1 with bolts 80, 80, and the back plate 3 is disposed on the front bracket 40 side.

  The reinforcing patch 1 includes a main body 10 that is joined to the outer surface of the base plate 2 and a bent portion 11 that is formed by being bent at a substantially right angle from one side of the main body 10. It is fastened directly to the rear bracket 41 located on the back side of the SB with bolts 80 and 80. 11A and 11A in the figure indicate bolt insertion holes.

  The body 10 has through holes 13A and 13A into which the rotation shaft 31 of the latch 30 and one end of the rotation shaft 33 of the locking plate 35 are inserted and supported.

  Further, a covering piece portion 10 </ b> A that covers the ends of the back plate 3 and the base plate 2 is bent and extended at one end edge of the main body 10 at a right angle.

  In the figure, 17 is a fastening portion provided at the upper portion of the reinforcing patch 1, and 18 is a fastening portion provided at the lower portion of the reinforcing patch 1, and fastening holes 17 </ b> A and 18 </ b> A are opened in the fastening portions 17 and 18.

  In the figure, reference numerals 1A, 2A, 3A, and 4A denote insertion notches that enter the striker 6, respectively.

  In the illustrated example, the spacer 7 is fixed to the base plate 2, but in the case where the base plate 2 is not used, the spacer 7 is directly fixed to the reinforcing patch 1.

  Next, the assembly method will be described. The back plate 3, the base plate 2 with the spacer 7 and the reinforcing patch 1 are sequentially applied to the bracket 4 on the seat back SB side, and the bolts 81 and 81 are applied to the reinforcing patch 1. The fastening holes 17A, 27A, 37A, 18A, 28A, 38A are passed through and fastened to fastening holes (not shown) provided in the front bracket 40. Accordingly, the fastening portions 17 and 18 provided on the upper and lower portions of the back plate 3, the base plate 2, and the reinforcing patch 1 are fixed.

  Thereafter, the bolts 80, 80 are inserted into the bolt insertion holes 11 </ b> A, 11 </ b> A of the reinforcing patch 1 and fastened to the fastening holes 41 </ b> A, 41 </ b> A of the rear bracket 41. Thereby, the bending part 11 of the reinforcement patch 1 is fixed to the seat back side, and the inclination of the reinforcement patch 1 in the front-rear direction is prevented.

  When the base plate 2 is not used, the reinforcing patch 1 is directly fastened to the bracket 4b on the seat side together with the back plate 3. The reinforcing patch 1 is covered with a resin garnish (not shown).

  In the above locking device B, the latch 30 is sandwiched between the back plate 3 and the spacer 7, the back plate 3 is supported by the seat side bracket 4, and the base plate 2 having the spacer 7 is supported by the reinforcing patch 1. .

  Accordingly, the base plate 2 and the back plate 3 with the spacer 7 are reinforced, and the torsion space of the latch 30 is closed by the spacer 7, so that the latch 30 provided between the spacer 7 and the back plate 3 is attached to the striker 6. Even when a large load is input in the engaged state, the strength of the partition wall of the base plate 2 increases, and the occurrence of twisting of the base plate 2 and the latch 30 can be prevented.

  In addition, since the bent portion 11 of the reinforcing patch 41 is fastened to the bracket 4 with bolts 80 and 80, deformation (tilt) of the reinforcing patch 1 in the front-rear direction can be prevented.

  Therefore, even if a heavy load is input, the latch 30 is not deformed and the locked state with respect to the striker 6 is not released.

  Further, since the rigidity of the base plate 2, the back plate 3, the latch 30, etc. is not increased by increasing the thickness and thickness, it is not necessary to increase the size of the lock unit, and the reduced size lock unit can be shared. .

  In the illustrated example, the rear seat is divided into left and right seat backs and attached to a wide seat back SB. However, the seat back divided into right and left can be used for the same width.

The perspective view of the locking device concerning the present invention. XX sectional drawing of FIG. The expanded sectional view of the principal part. FIG. The rear view of a sheet | seat provided with the locking device of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Reinforcement patch, 2 ... Base plate, 3 ... Back plate, 30 ... Latch, 7 ... Spacer.

Claims (4)

In the seat locking device having a latch that engages the striker on the vehicle body side on the back plate provided on the seat back side,
A reinforcing patch is disposed on the outer side of the back plate, and the reinforcing patch includes a main body joined to the outer side of the back plate, and a bent portion that is bent at a substantially right angle from one side of the main body. A seat locking device in which the bent portion is directly fastened to the seat side together with the back plate , respectively . The seat locking device according to claim 1 , wherein a base plate for storing the latch is provided, and a spacer is provided between the base plate and the latch so as to be close to a side surface of the latch. In the seat locking device having a latch that engages the striker on the vehicle body side on the back plate provided on the seat back side,
Said latch base plate for accommodating provided, providing a spacer adjacent to a side of the latch between the latched and the base plate Rutotomoni,
A seat locking device in which a reinforcing patch is disposed outside the back plate, the reinforcing patch is fastened to the seat side together with the back plate, and a side portion of the reinforcing patch is fastened directly to the seat side . The seat locking device according to claim 2 or 3 , wherein the reinforcement patch is fastened to the seat side together with the back plate and the base plate.

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