JP4608443B2 - Locking device with plate material fixing structure - Google Patents

Description

The present invention relates to a locking device having a plate material fixing structure for fixing two plate materials to each other.

Conventionally, in a fixing structure for fixing two plate members to each other, a projection formed by burring or the like is fitted into the second plate in an insertion hole formed in the first plate, and formed on the inner peripheral surface of the projection. The first plate member and the second plate member are fixed to each other by screwing and fastening a bolt to the screw hole through the insertion hole (for example, see Patent Document 1).
Japanese Utility Model Publication No. 3-77803 (FIGS. 1 and 2)

  In the conventional plate material fixing structure as described above, it may be necessary to form the protruding portion in the vicinity of the bent portion of the first plate material. However, in this case, when the first plate material is bent, the tensile force during the bending process may act on the periphery of the protrusion, and the dimensions of the protrusion may change. As a result, the accuracy of the protrusions may be reduced, and the fixing strength may be reduced.

In view of the above problems the prior art has, without reducing the accuracy of the projections, with a fixed structure of the plate material can be formed in the vicinity of the bent portion of the projections An object of the present invention is to provide a locking device .

According to the present invention, the above problem is solved as follows.
A first base plate that is a first plate member , a second base plate that is a second plate member that faces the side surface of the first base plate, and is pivotally supported by a pivot between the first base plate and the second base plate so as not to engage with the striker. A locking device having an engaging member, and a plate material fixing structure for fixing the first base plate and the second base plate to each other , wherein the first and second base plates enter the striker into which the striker can enter. A first bent piece formed by bending in the vicinity of the opening side of the striker entry groove in the first base plate and perpendicular to the entry direction of the striker; A cylindrical projection provided in the vicinity of the bent portion of the bent piece and having a female screw portion screwed on the inner peripheral surface thereof; and the front of the first bent piece A direction adjacent to the portion where the protrusion is provided and a portion corresponding to the bent portion of the first bent piece before bending the first bent piece, and along the bent portion A bent portion hole whose dimension is equal to or larger than the diameter of the protruding portion, a second bent piece formed on the second base plate and overlapping with the first bent piece, and the protruding portion provided on the second bent piece And the first bent piece and the second bent piece are connected to each other by screwing into the female screw portion of the protruding portion through the fitting hole fitted in the protruding portion and the fitting hole fitted in the protruding portion. And a bolt that faces in a direction orthogonal to the pivot shaft to be fastened .

According to the present invention, the following effects can be obtained.
(A) provided with a bent portion hole in the bent portion of the first plate, by providing the protrusions in the vicinity of the bent portion bore, when bending a first plate, it is possible to prevent a change of the protrusion . Thus, it is possible to ensure the accuracy of the projections.
( B) Deformation of the first and second base plates, particularly deformation near the striker entry groove, can be effectively suppressed.
(C) When a load acting in the axial direction of the pivot of the engaging member is applied to the first and second base plates, the load is received by the engagement relationship between the protrusion and the fitting portion, and is applied to the bolt. Since the shear load does not act directly, the first bent piece of the first base plate and the second bent piece of the second base plate can be firmly fixed to each other.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. 1 is a perspective view of a seat lock device to which the present invention is applied, FIG. 2 is a rear view of the seat lock device, FIG. 3 is a side view of the seat lock device, and FIG. 4 is a line IV-IV in FIG. FIG. 5 is an exploded perspective view of the main part. In the following description, the upper left side in FIG. 1 is “front”, the lower right side is “rear”, the lower left side is “inside”, and the upper right side is “outside”.

  The seat lock device (1) is a first plate formed of a metal plate that is fixed by bolts (not shown) in a seat back (not shown) that constitutes a movable body that is supported on the floor of the vehicle body so as to be able to rise and fall. A first base plate (2) forming a plate material and a second base plate (3) formed by a metal plate material fixed so as to be opposed to a side surface facing the outdoor side of the first base plate (2) ) To form an outer shape.

  The first and second base plates (2) and (3) are substantially centered on the first and second engaging shafts (41) and (42) of the striker (4) fixed to the vehicle body when the seat back is erected. Are provided with striker entry grooves (21) and (31) that face in the front-rear direction that can enter from behind.

  In the accommodating space between the first base plate (2) and the second base plate (3), the seat back is engaged by engaging the first or second engaging shaft (41) (42) of the striker (4). Unlocking operation (operation in the counterclockwise direction in FIG. 3) based on the operation of a hook member (5) that serves as an engaging member for holding the lever in an upright position and an operation knob (not shown) provided on the seat back An open lever (6) for releasing the engagement between the hook member (5) and the first or second engagement shaft (41) (42) is disposed.

  The hook member (5) is pivotally supported between the first base plate (2) and the second base plate (3) so as to be swingable in the vertical direction by a pivot shaft (8) facing left and right, and is wound around the pivot shaft (8). The spring (9) is biased in the engaging direction (downward in FIG. 3).

  A hook member (5) has a first portion that can be selectively engaged with the first and second engagement shafts (41) and (42) of the striker (4) that has entered the striker entry grooves (21) and (31). An engagement groove (51) is provided, and on the side closer to the pivot (8), when the second engagement shaft (42) is engaged with the first engagement groove (51), the first engagement shaft (41) is provided. ) Is provided in the second engaging groove (52).

  When the first engagement shaft (41) of the striker (4) is engaged with the first engagement groove (51) of the hook member (5), the seat back is held in the first standing position, When the second engagement shaft (42) is engaged with the first engagement groove (51), the seat back is held at the second standing position inclined backward from the first standing position.

  The open lever (6) is pivotally supported between the first base plate (2) and the second base plate (3) by the pivot (10) facing in the left-right direction, and the spring (11) wound around the pivot (10). It is biased in the standby direction (counterclockwise in FIG. 3) by the biasing force.

  When the open lever (6) is unlocked from the standby position based on the operation of the operation knob, the hook member (5) comes into contact with the protruding shaft (53) provided on the hook member (5), thereby 3 swings upward from the engagement position shown in FIG. Thereby, the first engagement shaft (41) (or the second engagement shaft (42)) of the striker (4) can be detached from the first engagement groove (51), and the seat back is changed from the standing posture to the lying posture. Can be moved.

A chamber in a direction perpendicular to the entry direction of the striker (4) is located above the opening side (rear side) of the striker entry grooves (21) and (31) in the first base plate (2) and the second base plate (3). A first bent piece (22) bent outward and a second bent piece (32) bent indoors are provided. The first bent piece (22) and the second bent piece (32) are bolts that form a fastening means facing forward (a direction perpendicular to the axial direction of the pivot (8)) in a state where they are overlapped in the front-rear direction. They are fixed to each other as described later by (7).

The first bent piece (22) is formed by bending, and a bent portion hole (24) having a predetermined length in the vertical direction is formed in the bent portion (23). In the vicinity of the bent portion hole (23) in the one folded piece (22), a protruding portion (25) protruding in a cylindrical shape toward the outer surface side (downward in FIG. 4) is formed by burring. A female screw portion (25a) to which the bolt (7) is screwed is screwed on the inner peripheral surface of the projection portion (25). As shown in FIG. 5, the bent portion hole (24) is in a portion adjacent to the portion of the first bent piece (22) where the protruding portion (25) is provided, and the direction along the bent portion (23). The dimension (L1) is at least equal to or greater than the outer diameter (L2) of the protrusion (25). The second bent piece (32) has a fitting hole (33) into which the protrusion (25) is fitted.

  The protrusion (25) is formed by the following procedure. First, a bent hole (24) and a pilot hole for burring are formed in advance on the first base plate (2), and a protrusion (25) is formed by burring based on the pilot hole. And after forming the internal thread part (25a), the part containing a bending part hole (24) is bent, and a 1st bending piece (22) is formed. By forming in this way, the tensile stress of the bending process when forming the first bent piece (22) is absorbed by the bent hole (24) and is not transmitted to the protrusion (25) and its periphery. . Therefore, the protrusion (25) is not pulled and the dimension does not change. As a result, the accuracy of the protrusion (25) can be ensured and the bending accuracy can be improved.

  In order to fix the first base plate (2) and the second base plate (3) to each other, the protrusion (25) of the first bent piece (22) is fitted into the fitting hole (33) of the second bent piece (32). ). Then, the bolt (7) is screwed into the female screw part (25a) of the protrusion (25) from the rear through the fitting hole (33) and fastened. As a result, as shown in FIG. 4, the second bent piece (32) is sandwiched between the head (71) of the bolt (7) and the first bent piece (22).

  Thereby, the opening sides of the striker entry grooves (21) and (31) of the first and second base plates (2) and (3) are fixed to each other. As a result, when a large load is applied to the seat lock device (1), the deformation of the first and second base plates (2) and (3) accompanying the deformation of the hook member (5), particularly the striker entry grooves (21) and (31). The deformation in the vicinity can be effectively suppressed, and the lock strength of the seat lock device (1) can be improved.

  Further, when a load is applied to the first and second base plates (2) and (3) so as to face the axial direction of the pivot (8), the protrusion (25) and the fitting hole (33) The bolts (7) can be received in an engaging relationship, and no shear load acts directly on the bolts (7). As a result, the strength is remarkably improved as compared with the case where the first and second base plates (2) and (3) are fixed to each other only by the bolt (7) without forming the protrusion (25).

  Furthermore, since the dimensional accuracy of the projection (25) and the bending accuracy of the first bent piece (22) are ensured, the projection (25) is securely fitted into the fitting hole (33), and the first The folded piece (22) and the second folded piece (32) can be in close contact with each other. Thereby, the first bent piece (22) and the second bent piece (32) can be firmly fixed to each other. Further, when the second base member (2) is deformed due to a load that is directed in the axial direction of the pivot (8), the deformation is absorbed by the bent hole (24), so the first bent piece. It is difficult to transmit to (22) and the second bent piece (32). As a result, only the second base member (2) is deformed, and the first bent piece (22) and the second bent piece (32) can be kept in close contact with each other, and the first bent piece ( 22) and the second bent piece (32) can be firmly fixed to each other.

Although one embodiment of the present invention has been described above, the following various modifications and changes can be made to the above embodiment without departing from the spirit of the present invention.
(I) The plate material fixing structure according to the present invention is applied to a lock device other than the seat lock device or a device other than the lock device.
(Ii) The movable body is other than the seat back.
(Iii) The protruding portion is molded so as to protrude toward the inner surface side of the first bent piece.

It is a perspective view of a seat lock device to which the present invention is applied. It is a rear view of a seat lock device. It is a side view of a seat lock device. FIG. 4 is a transverse sectional view taken along line IV-IV in FIG. 2. It is a disassembled perspective view of the principal part.

(1) Seat lock device (lock device)
(2) First base plate (first plate)
(3) Second base plate (second plate)
(4) striker
(5) Hook member (engaging member)
(6) Open lever
(7) Bolt (fastening means)
(8) Axis
(9) Spring
(10) Axis
(11) Spring
(21) Strike entry groove
(22) First folded piece
(23) Bending part
(24) Bending hole
(25) Projection
(25a) Female thread
(31) Strike approach groove
(32) Second folded piece
(33) Mating hole
(41) First engagement shaft
(42) Second engagement shaft
(51) First engagement groove
(52) Second engagement groove
(53) Projection shaft
(71) Head

Claims (1)

A first base plate that is a first plate member , a second base plate that is a second plate member that faces the side surface of the first base plate, and is pivotally supported by a pivot between the first base plate and the second base plate so as not to engage with the striker. In a locking device having an engagement member, a plate material fixing structure for fixing the first base plate and the second base plate to each other ,
The first and second base plates have striker entry grooves into which the striker can enter,
The fixing structure includes a first bent piece formed by bending in the vicinity of the opening side of the striker entry groove in the first base plate and perpendicular to the entry direction of the striker, and a bending in the first bent piece. A cylindrical protruding portion provided in the vicinity of the portion and having a female screw portion screwed on an inner peripheral surface thereof, a portion adjacent to the portion where the protruding portion is provided in the first bent piece, and the first bent portion Before the first bent piece is bent in a portion corresponding to the bent portion of the piece, a bent portion hole having a dimension in the direction along the bent portion equal to or larger than the diameter of the protruding portion, and the second A second bent piece formed on the base plate and overlapping with the first bent piece; a fitting hole provided in the second bent piece and into which the protruding portion is fitted; and the fitting fitted into the protruding portion. By screwing into the female threaded portion of the projection through the joint hole, Locking device with a fixed structure of the plate material, characterized in that it comprises a bolt facing perpendicular direction with respect to the pivot axis to fasten 1 bent piece and the second bent pieces together.

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