JPH11115569A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device in small size with a simple structure whereby a fixed member of seat for a vehicle is detachably fixed to a fixing member of a vehicle floor. SOLUTION: This device comprises a base frame (31, 32) mounted in a fixed member side, base plate 33 supported able to rotate in a horizontal direction on the base frame swing arm 34 supported rotatably in a vertical direction in the base frame, and a spring 35 interposed in a support part of the swing arm to energize in one rotational direction. The base plate has a cam groove 33a gradually separated to extend from the center of rotation, the swing arm has a cam part 34b inserted in the cam groove 33a in an upper end part and a hook part 34c detachably hooked to a hook part in a fixing member side in a lower end part, by energizing force of the spring, the cam part 34b is positioned in a base end part of the cam groove 33a, the hook part 34c is positioned in a condition able to be hooked to the hook part in the fixing member side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device attached to a fixed member side for fixing the fixed member to the fixed member side, and more particularly, to a vehicle seat removably fixed to a vehicle floor. For a locking device suitable for:

[0002]

2. Description of the Related Art A locking device for removably fixing a member to be fixed to a fixing member is, for example, disclosed in Japanese Patent Application Laid-Open No. 8-67186 as a vehicle seat locking device. Lock base, a lock plate and a pole that are sandwiched between the two lock bases and supported so as to be rotatable downward, and a pole is interposed between the lock plate and the upper end of the pole to engage the pole with the lock plate. And a spring having a spring for causing the spring.

In this type of lock device, however, engagement recesses that open downward are formed at the lower ends of both lock bases, and the lock plates enter the engagement recesses of both lock bases. A hook portion for hooking the hook member is formed, the hook portion of the lock plate is hooked on the hook member that has entered the engaging recess of both lock bases, and the pawl is locked by the action of the spring. By engaging with the plate and holding the locking state of the lock plate with respect to the locking member, the lock plate functions to removably fix the vehicle seat to the vehicle floor.

[0004]

By the way, in the lock device of the above-mentioned type, since the upper portions of both lock bases are mounted on the fixed member side, both lock bases form a mounting portion on the upper portions. The lock plate and the pawl need to be formed in a vertically long shape in the vertical direction because it is necessary to form a latch portion for a spring at the upper end thereof. For this reason, this type of locking device is necessarily vertically long and large.

In the lock device of this type,
Both the lock plate and the pole are indispensable, and since they must be arranged in series and supported so that they can be engaged and disengaged, the length in the lateral direction becomes longer, and the structure is inevitably complicated.

That is, the lock device is inevitably increased in size and complicated in structure. An object of the present invention is to solve these problems.

[0007]

According to the present invention, there is provided a base frame attached to an attachment portion on a fixed member side, a base plate rotatably supported on the base frame in a horizontal direction, and an intermediate portion attached to the base frame. A swing arm that is rotatably supported in a vertical direction, and a spring that is interposed in a support portion of the swing arm and biases the swing arm in one of the rotation directions. The swing arm has a cam groove extending in a direction gradually separated from the center of rotation, and the swing arm has a cam portion for inserting the cam groove of the base plate at an upper end thereof, and a hook portion on the fixing member side at a lower end thereof. A hook portion detachably hooked, wherein the cam portion is located at a base end portion of the cam groove by a biasing force of the spring, and It is characterized in that the click portion is located in the latched ready to hook portion of the fixed member side.

The lock device according to the present invention is suitably used as a lock device for fixing a vehicle seat to a vehicle floor so as to be detachable, and is attached to one end in the front-rear direction or one side in the left-right direction of the vehicle seat. Then, the vehicle seat functions to fix the vehicle seat detachably from the vehicle floor.

[0009]

In the lock device having the above-described structure, the mounting portion for the fixed member can be formed at the middle part of the base frame in the vertical direction. It is not necessary to form a mounting part to the base frame, and the length of the base frame in the vertical direction can be shortened, and a spring for biasing the swing arm is interposed in a support part which is an intermediate part of the swing arm. Therefore, it is not necessary to form a spring retaining portion at the upper end of the swing arm, so that the vertical length of the swing arm can be reduced.

Further, in the lock device, since a component corresponding to a pole for holding a lock plate like a conventional lock device is not required, the transverse direction can be shortened and the structure is simplified. be able to.

As described above, the lock device according to the present invention can be reduced in size as a whole, and can have a reduced number of constituent members, thereby simplifying the structure.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 schematically shows a vehicle seat equipped with a lock device according to an example of the present invention. The seat is a left / right split type seat on the right side in the vehicle traveling direction. The seat includes a seat cushion 10a and a seat back 10b. A leg 10c is attached to a lower left portion of the lower surface of the seat cushion 10a. Is mounted with a slide rail 10d.

The leg portion 10c of the seat has a predetermined length extending in the front-rear direction.
The upper part is mounted on a concave part provided on the lower surface of a so as to be rotatable in the left-right direction. In the leg 10c,
A lock arm 11 that is detachably hooked to a hook member, which is a support member provided on a vehicle floor (not shown) at the tip end thereof.
Are rotatably supported in the vertical direction at an intermediate portion, and a lock mechanism 12 for the leg 10c is attached to a rear end thereof.

The lock arm 11 has a hook portion 1 at its lower end which is detachably engaged with a locking member provided on the vehicle floor.
1a is formed. The lock mechanism 12 has the same configuration as the conventional lock device described in detail at the beginning, and is configured such that the rotation of the swing arm 12a causes the lock plate to be disengaged from the locking member provided on the vehicle floor. . The swing arm 12a and the lock arm 11 are connected to each other by a connection arm 12b, and an operation cable 12c is connected to the connection arm 12b.

As shown in FIGS. 1 to 5, the slide rail 10d includes a lower rail 13a and an upper rail 13b fitted to the lower rail 13a and slidable in the front-rear direction. Is provided with a hook member 14a, and a support bracket 14b is provided at a rear end portion on the lower surface side of the lower rail 13a.
The sliding in the front-rear direction of the upper rail 13b is restricted to a predetermined range by abutment between a roller 13c interposed between the two rails 13a, 13b and a stopper 13d provided at the bottom of the lower rail 13a.

The engaging member 14a has, at its tip, an engaging recess 14 which removably engages with the engaging member provided on the vehicle floor.
c is formed. A lock mechanism 20 for the slide rail 10d is provided between the lower rail 13a and the upper rail 13b, and a lock device 30 according to an example of the present invention is provided on the support bracket 14b.

Lock mechanism 20 for slide rail 10d
Is a known type, a support shaft 21 rotatably supported by the upper rail 13b via a support bracket 13d and extending in the front-rear direction, a lock claw 22 fixed to the support shaft 21, and a rear end of the support shaft 21. A lock release handle 23 is provided. Support shaft 21
Is urged by a spring member (not shown) to insert the lock claw 22 into one of the lock holes 24a of the lock plate 24 fixed to the lower surface of the lower rail 13a, thereby fixing the upper rail 13b to the lower rail 13a. I have.

The lock release handle 23 is rotatably supported by the lock release handle 23, and the operation cable 12c is connected to the rotation end of the lock release lever 15. I have. Lock release lever 15
Is biased clockwise in FIG. 3 by a spring member (not shown), and holds the lock mechanism 12 for the leg 10c in a hookable state with respect to the hook member.

In the slide rail 10d, a hinge bracket 16 is provided upright on the upper rail 13b. The hinge bracket 16 includes a fixing bracket 16a.
, A rotating bracket 16b, and both brackets 16
a and 16b, which are connected to each other, by a hinge pin 16c.
The right side of is fixed.

In the seat, a lock arm 11 provided at the front end of the leg 10c and a slide rail 10d
Of the vehicle floor is detachably hung by each of the hanger members on the front side of the vehicle floor.
c, a lock mechanism 12 provided at the rear end and a lock device 30.
Thus, the hooks are detachably hooked to the respective hook members on the rear side of the vehicle floor. As a result, the seat is fixedly supported on the vehicle floor.

In the seat in the fixed state, when the lock release lever 15 and the lock release handle 23 are gripped and the lock release lever 15 is pulled, the operation cable 12c is extended, and the connecting arm 12b is operated to operate the lock arm 11 and the lock mechanism. At the same time, the locking state of each of the locking members 12 is released, and the fixing state of the leg 10c to the vehicle floor is released. In this state, the seat cushion 10a can rotate around the hinge pin 16c of the hinge bracket 16 in the counterclockwise direction in FIG.
The seat can be stored in an inverted state to the left in the figure with the seat back 10b folded on the seat cushion 10a.

In the seat, the rotation of the lock release handle 23 causes the support shaft 2 to rotate.
1, the lock claw 22 is pulled out from the lock hole 4a, the fixed state of the upper rail 13b with respect to the lower rail 13a is released, and the upper rail 13b can be slid in the front-rear direction by a predetermined amount. The seat in the state can be moved in the front-rear direction to change the storage position of the seat.

Further, by releasing the fixed state to the vehicle floor by the lock mechanism 12 and a lock device 30 described later, the fixed state to the vehicle floor on the rear side of the seat cushion 10a is released, and the seat in this state is moved rearward. By pulling the seat, the entire seat can be removed from the vehicle floor.

Thus, as shown in FIGS. 2, 3, 6, and 7, the lock device 30 according to an example of the present invention comprises a pair of frame members 31, 3 constituting a base frame.
2, a base plate 33, a pair of swing arms 34,
A pair of torsion springs 35 and a release lever 36 are provided.

The first frame member 31 constituting the base frame has a shape in which both ends of a plate having a predetermined width are bent downward. The first frame member 31 protrudes downward from each end of the flat portion 31a. And a pair of leg portions 31b. The second frame member 32 forming the base frame includes a cylindrical portion 32a, a pair of left and right outward flange portions 32b extending laterally from an upper end of the cylindrical portion 32a, and a cylindrical portion 32a.
A pair of front and rear upward flange portions 3 extending upward from the upper end of the upper surface
2c. These two frame members 31, 32
Are connected and integrated by a connection shaft 37a in a state in which both upward flange portions 32c are fitted between both leg portions 31b,
Thus, a base frame is configured.

The base plate 33 is shaped like a circular dish, is placed on the flat portion 31a of the first frame member 31 so as to face down, and the connecting pin 37b is attached to the flat portion 31a.
Are connected rotatably in the horizontal direction. Cam grooves 33a are formed in the base plate 33 at positions sandwiching the coupling pins 37b. Each cam groove 33a
Is bent in the clockwise direction in FIG. 3 and extends from the proximal end to the distal end in a direction gradually separated from the coupling pin 37b. The base end of the release lever 36 is fixed to the peripheral edge of the base plate 33.

Each swing arm 34 has a predetermined thickness and a predetermined length. An intermediate portion is formed on the support portion 34a, an upper end portion is formed on the cam portion 34b, and a lower end portion is formed on the hook portion 34c. The swing arm 34 is mounted on the connecting shaft 37a so as to be rotatable in the up-down direction, and is erected by a torsion spring 35 wound on a sleeve 37c fitted on the connecting shaft 37a, and stands upright. Cam section 34
b into the cam groove 33 a of the base plate 33, and the hook 34 c, which is the lower end, is inserted into the second frame member 3.
It protrudes outward from an opening 32d provided below the second cylindrical portion 32a.

As shown in FIGS. 6 and 7, the lock device 30 of this configuration is mounted on a support bracket 14b provided at the rear end of the lower rail 13a, and is provided with an engagement plate 42 provided on the floor panel 41 side. Opening 42a
Is releasably engaged with the engaging edge portion. Reference numeral 38 shown in FIG. 6 is a cover that covers the upper part of the lock device 30.

On the floor panel 41 side, a recess 41a is formed at a position corresponding to the lock device 30,
An engagement plate 42 is attached so as to cover the recess 41a. An opening 42a is formed in the engagement plate 42, and a peripheral edge of the opening 42a is an engagement edge. For the opening 42a of the engagement plate 42,
The bottom side of the second frame member 32 of the lock device 30 can advance and retreat.

As shown in FIG. 6, the upper portion of the engagement plate 42 except for the opening 42a is covered with a cover 42b.

In the lock device 30 configured as described above, when the seat is fixed to the vehicle floor as shown in FIG. 1, as shown in FIG. 6 and FIG. 32 has an engagement plate 42
Of each swing arm 3
Reference numeral 4 indicates that the hook 34c is engaged with the engaging edge of the opening 42a, and the cam 42b is located at the base end of the cam groove 33a of the base plate 33.

In this state, when the release lever 36 is rotated as shown by a two-dot chain line in FIG.
Are rotated in the same direction, and each cam groove 3 of the base plate 33 is rotated.
By the action of 3a, each swing arm 34 is
By rotating the hook b in the direction away from the coupling pin 37b, the hook portion 34c of the swing arm 34 is retracted inward from the opening 32d of the second frame member 32. As a result,
The hook portion 34c of the swing arm 34 is
The slide rail 10d is released from being fixed to the vehicle floor by the lock device 30 by being separated from the engagement edge of the second opening 42a.

Therefore, in this state, the lock mechanism 1
When the fixing of the leg 10c to the vehicle floor by the second 2 is released, the seat can be removed from the vehicle floor.

In a state in which the fixing of the slide rail 10d to the vehicle floor by the lock device 30 is released, the bottom side of the second frame member 32 of the lock device 30 is advanced into the opening 42a of the engagement plate 42. Then, each swing arm 34 has its hook portion 34c
a, and the cam portion 42b is located at the base end of the cam groove 33a of the base plate 33, and the slide rail 10d is fixed to the vehicle floor.

As described above, in the lock device 30, the mounting portion of the slide rail 10d on the side of the support bracket 14b is formed at a vertically intermediate portion of the base frame (the first and second frame members 31, 32). Support bracket 14 on the upper end of the base frame.
It is not necessary to form the mounting portion on the side b, the length of the base frame in the vertical direction can be reduced, and the torsion spring 35 for biasing each swing arm 34 is an intermediate portion between the swing arms 34. Since the swing arm 34 is provided on the connecting shaft 37a, it is not necessary to form a spring retaining portion at the upper end of each swing arm 34, and the vertical length of the swing arm 34 can be reduced.

Further, in the lock device 30, since a component equivalent to a pole for holding a lock plate like a conventional lock device is not required, the lateral direction can be shortened and the structure can be simplified. can do.

From the above, the lock device 30 is
The size can be reduced as a whole, the number of constituent members can be reduced, and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a vehicle seat provided with a lock device according to an example of the present invention.

FIG. 2 is a side view of a slide rail included in the vehicle seat.

FIG. 3 is a plan view of a rear portion of the slide rail.

FIG. 4 is a rear view of the slide rail with a support bracket omitted.

FIG. 5 is a vertical cross-sectional view of the slide rail taken along line 5-5 in FIG. 2;

FIG. 6 is a longitudinal sectional view of the lock device, taken along a line 6-6 in FIG. 3;

FIG. 7 is a vertical sectional view of the lock device taken along a line 7-7 in FIG. 3;

[Explanation of symbols]

10a: seat cushion, 10b: seat back, 1
0c: Leg, 10d: Slide rail, 11: Lock arm, 11a: Hook, 12: Lock mechanism, 12a:
Swing arm, 12b ... connecting arm, 12c ... operation cable, 13a ... lower rail, 13b ... upper rail,
13c: roller, 13d: stopper, 14a: locking member, 14b: support bracket, 14c: engagement recess, 15
... Lock release lever, 16 ... Hinge bracket, 16a
... Fixing bracket, 16b ... Rotating bracket, 16c ...
Hinge pin, 20: locking mechanism, 21: shaft, 22
… Lock claw, 23… lock release handle, 24… lock plate, 24a… lock hole, 30… lock device, 3
1, 32: frame member, 31a: flat portion, 31b: leg portion, 32a: cylindrical portion, 32b: outward flange portion, 32c:
Upward flange portion, 32d opening, 33 base plate, 33a cam groove, 34 swing arm, 34a
Supporting portion, 34b: cam portion, 34c: hook portion, 35: torsion spring, 36: release lever, 37a: connecting shaft, 37b: connecting pin, 37c: sleeve, 38: cover body, 41: floor panel, 41a: concave Location, 42: engagement plate, 42a: opening.

Claims (3)

[Claims] 1. A base frame attached to an attachment portion on a fixed member side, a base plate supported on the base frame so as to be rotatable in a horizontal direction, and an intermediate portion supported on the base frame so as to be rotatable in a vertical direction. A swing arm, and a spring interposed in a support portion of the swing arm and biasing the swing arm in one of the rotation directions. The base plate is a direction in which the base plate gradually separates from the center of rotation. The swing arm has a cam portion which is inserted into the cam groove of the base plate at an upper end thereof, and a hook which is detachably hooked at a lower end of the cam portion to a hooking portion on the fixed member side. The cam portion is located at the base end of the cam groove by the urging force of the spring, and the hook portion is located on the fixing member side. Locking device, characterized in that located in the latching ready to stop unit. 2. The locking device according to claim 1, wherein the fixed member is a vehicle seat, and the fixing member is a vehicle floor. 3. The locking device according to claim 1, wherein the fixed member is a vehicle seat, and is attached to one end of the vehicle seat in the front-rear direction or one side in the left-right direction. A lock device, wherein the vehicle seat is fixed to be detachable from the vehicle floor.