JP3588853B2 - Automotive seat lock device - Google Patents

Description

[0001]
[Industrial applications]
The present invention provides a seat lock device for an automobile in which a protrusion of a pole is interposed between one protrusion of a latch and a striker, thereby eliminating clearance between the striker and the protrusion and preventing rattling. About.
[0002]
[Prior art]
As shown in FIGS. 5 and 6, a first conventional vehicle seat lock device has a latch C2 having two projections P1 and P2 and having a recess C1 for receiving a striker S and an engagement portion C2 for locking. R and a pole P provided with a protruding piece PP that engages with and locks the engaging portion C2 of the latch R.
[0003]
Further, as shown in FIGS. 7 and 8, a second conventional seat lock device for a vehicle (actually disclosed in Japanese Utility Model Laid-Open Publication No. 1-136029, Japanese Utility Model Publication No. 63-32744) is provided between a striker and a recess C1 on the latch side for receiving the striker. In order to prevent backlash, a device in which an elastic body D is inserted on the striker S side (Japanese Utility Model Laid-Open No. 1-136029) and a device in which a cushion rubber G is inserted on the latch R side (Japanese Utility Model Application No. 63-32744). there were.
[0004]
[Problems to be solved by the invention]
The first conventional vehicle seat lock device engages by preventing interference on the swing trajectory of the latch R due to disengagement of the striker S and the first concave portion C1 of the latch R. Since the first concave portion C1 is formed by an arc portion relatively large with respect to the diameter of the striker S in order to smoothly perform the detachment, the first concave portion C1 and the striker S are formed between the first concave portion C1 and the striker S. There is a problem that backlash g (shown in FIG. 5) is present, noise is generated, and members may be damaged.
[0005]
In the second conventional seat lock device for an automobile, since the elastic body D and the cushion rubber G are interposed on the striker S side and the latch R side, the play between the recess C1 and the striker S is buffered. To prevent the generation of abnormal noise and damage to members, but since the elasticity of the elastic body D and the cushion rubber G changes with time due to long-term use, the backlash of the backlash and the abnormal noise and members are prevented. However, there is a problem that the performance of preventing damage to the device is reduced.
[0006]
The inventor of the present invention inserts a protruding piece of a pole between one protruding piece of a latch and a striker to thereby provide a clearance between the striker and the other protruding piece of the latch and the protruding piece of the pawl. Focusing on the technical idea of the present invention for eliminating noise, the present inventors have further researched and developed the present invention to achieve the object of eliminating the backlash and preventing the generation of abnormal noise and the damage of members.
[0007]
[Means for Solving the Problems]
The vehicle seat lock device of the present invention (first invention according to claim 1)
A latch comprising a swinging member having a recess having two projecting pieces and receiving a striker,
A pole constituted by a swinging member having a projecting piece inserted between the one projecting piece of the latch and the striker.
[0008]
The vehicle seat lock device of the present invention (the second invention according to claim 2)
In the first invention,
A tapered portion is formed at a contact portion between the one protruding piece of the latch and the protruding piece of the pawl.
[0009]
[Action]
In the vehicle seat lock device according to the first aspect of the present invention, the striker abuts on one of the projecting pieces of the latch of the swinging member to swing, and is formed between the two projecting pieces. After entering the recess, the projecting piece of the pawl of the swinging member is engaged and locked by being inserted between the one projecting piece of the latch and the striker.
[0010]
In the vehicle seat lock device according to the second aspect of the present invention, the striker abuts on one of the protrusions of the latch of the swing member to swing, and is formed between the two protrusions. After entering into the recess, the projecting piece of the pawl of the swinging member comes into contact with each contacting part of the latch where the one protruding piece of the latch and the projecting piece of the pawl are formed with a tapered portion. As a result, the latch is gradually and smoothly inserted between the one projecting piece of the latch and the striker, and is engaged and locked.
[0011]
【The invention's effect】
In the vehicle seat lock device according to the first aspect of the present invention, after the striker enters the concave portion of the latch, the projecting piece of the pawl may be connected to the one projecting piece of the latch and the striker. Since it is interposed between them, there is an effect of eliminating backlash and preventing occurrence of abnormal noise and damage to members.
[0012]
In the vehicle seat lock device according to the second aspect of the present invention, after the striker enters the concave portion of the latch, a tapered portion is formed between the one protruding piece of the latch and the protruding piece of the pawl. As each of the abutting portions comes into contact with each other and enters, the protruding piece of the pawl is gradually and smoothly inserted between the one protruding piece of the latch and the striker. Thus, it is possible to more effectively prevent the generation of abnormal noise and the damage of members.
[0013]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
(First embodiment)
As shown in FIGS. 1 to 4, an automobile seat lock device according to a first embodiment includes opposing bases 11 and 12 locked to a seat 1S, a striker 2 fixed to a floor, and the bases 11 and 12. A latch 3 comprising a swing member 30 having two projecting pieces 31 and 32 and having a recess 33 for receiving the striker 2, and one of the projections of the latch 3 The pawl 4 includes a swing member 40 having a protruding piece 41 inserted between the piece 31 and the striker 2. The one protruding piece 31 of the latch 3 and the protruding piece of the pole 4 The tapered portions 34 and 42 are formed in the contact portion with the taper 41.
[0015]
As shown in FIGS. 2 and 3, the vehicle seat lock device according to the first embodiment is disposed one at each of the front and rear sides of the seat 1S, and faces each of the strikers 2 fixed to the floor. ing.
[0016]
As shown in FIGS. 2 and 3, the bases 11 and 12 have recesses 113 and 123 formed between two projecting portions 111, 112, 121 and 122 that project downward to allow the striker 2 to enter. The protrusions 111, 112, 121, and 122 are formed with two holes through which the latch pin 36 and the pole pin 44 for swingably supporting the latch 3 and the pole 4 are inserted.
[0017]
As shown in FIGS. 1 and 2, the latch 3 is constituted by an oscillating member 30 having a U-shape, and is inserted into a hole formed in one of the protrusions 111 and 121 of the bases 11 and 12. The latch pin 36 is swingably supported around the latch pin 36.
[0018]
The latch 3 has a V-shaped recess 33 for receiving the striker 2 between the two projecting pieces 31 and 32 projecting in the lateral direction. Is formed.
[0019]
As shown in FIGS. 1 and 2, the pawl 4 can swing freely around a chamfered pole pin 44 inserted in a hole formed in the other protruding portion 112, 122 of the base 11, 12. An arc-shaped projecting piece 41 which is constituted by a supported inverted J-shaped swinging member 40 and is inserted into the V-shaped recess 33 formed between the two projecting pieces 31 and 32 of the latch 3. Is formed.
[0020]
The pole 4 has a thin oval hole 431 formed at the lower portion for engaging with a chamfered pole pin, and a concave portion 432 for locking the other end of the spring 37 at an upper end. The locking members 43 are integrally provided side by side.
[0021]
The tapered portions 34 and 42 of the latch 3 and the pawl 4 are formed of a linear inclined portion on the lower surface of the one protruding piece 31 of the latch 3 and the protruding piece 41 of the pawl 4. It is constituted by an arc-shaped inclined portion on the upper surface.
[0022]
The lever 5 swinging around the lever pin 51 is engaged with the chamfered pole pin 44 engaged with the pole 4 in the same manner as the pole 4.
[0023]
In the vehicle seat lock device of the first embodiment having the above structure, when the seat lock device is locked as shown in FIG. 4, the striker 2 fixed to the floor moves upward because the seat lock device moves downward. (FIG. 4A).
[0024]
As shown in FIG. 4B, when the striker 3 enters the recess 33 of the latch 3 and hits the lower surface of the upper protruding piece 31, the latch 3 swings counterclockwise. As a result, the swing of the latch 3 is stopped by hitting a stopper provided in the bases 11 and 12.
[0025]
That is, since the latch 3 has reached the left end position in the counterclockwise direction, the latch 3 is integrally formed with the pawl 4 by the urging force of the spring 37 whose one end is locked in the concave portion 35 at the upper end of the latch 3. In order to swing the upper end of the disposed spring member 43 counterclockwise, the projecting piece 41 of the pawl 4 is connected to the lower surface of the projecting piece 31 above the latch 3 as shown in FIG. It is inserted between the striker 3 and makes the clearance zero.
[0026]
At this time, the tapered portion 34 of the protruding piece 31 of the latch 3 and the tapered portion 42 of the protruding piece 41 of the pole 4 abut on a tangent line to the swing center of the pole 4 (pole pin 44), and the pressure angle becomes zero. As a result, the pawl 4 is prevented from coming off the latch 3. The timing at which the projecting piece 41 of the pawl 4 is inserted between the lower surface of the projecting piece 31 above the latch 3 and the striker 2 is determined when the latch 3 hits a stopper and stops swinging. The moment when the latch 3 is lifted up together with the bases 11 and 12 (entire seat lock device) by the reaction force whose movement has been stopped, and a gap is formed between the lower surface of the projecting piece 31 above the latch 3 and the striker 2. .
[0027]
In the vehicle seat lock device according to the first embodiment having the above-described operation, after the striker 3 enters the concave portion 33 of the latch 3, the projecting piece 41 of the pawl 4 is moved to the one side of the latch 3. Is inserted between the protruding piece 31 and the striker 3, so that there is an effect of eliminating backlash and preventing occurrence of abnormal noise and damage to members.
[0028]
Further, in the vehicle seat lock device of the first embodiment, after the striker 2 enters the recess 33 of the latch 3, the one protruding piece 31 of the latch 3 and the protruding piece 41 of the pawl 4 The projecting pieces 41 of the pawl 4 are attached to the one of the latches 3 by the wedge action of the tapered portions 34 and 42 when the respective contact portions on which the tapered portions 34 and 42 are formed contact and enter. There is an effect that the clearance and the play between the projecting piece 31 and the striker 2 can be effectively reduced to zero.
[0029]
Further, in the vehicle seat lock device according to the first embodiment, each of the abutting portions of the one protruding piece 31 of the latch 3 and the protruding piece 41 of the pawl 4 on which the tapered portions 34 and 42 are formed abut. Since the protruding piece 41 of the pawl 4 is gradually and smoothly inserted, the backlash is eliminated, and an effect of effectively preventing generation of abnormal noise and damage to members is achieved.
[0030]
Further, in the vehicle seat lock device according to the first embodiment, the tapered portion 34 of the one protruding piece 31 of the latch 3 is constituted by a linear tapered portion 34 and the protruding piece 41 of the pawl 4 Since the tapered portion 42 is formed by the arc-shaped tapered portion 42, when the protruding piece 41 of the pawl 4 is inserted, each contact portion abuts and enters in a state where point contact is always maintained. Since the protruding piece 41 of the pole 4 is more smoothly inserted, there is an effect that the backlash is eliminated and the generation of abnormal noise and the damage of the members are more effectively prevented.
[0031]
The above-described embodiments have been described by way of illustration, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without violating the technical idea of the present invention.
[0032]
In the first embodiment described above, an example in which the latch is disposed on the left side and the pole is disposed on the right side as shown in FIGS. 1 to 3 has been described as an example, but the present invention is not limited thereto. If necessary, a mode in which a latch is disposed on the right side and a pole is disposed on the left side can be adopted.
[0033]
In the above-described first embodiment, as an example, from the viewpoint of easy entry of the striker, an example in which the striker enters by contacting only one protruding piece of the latch has been described, but the present invention is not limited thereto. Instead, it is also possible to adopt a mode in which the shape of the distal end portion is changed as necessary, and the striker enters into contact with the other projecting piece of the latch and the projecting piece of the pawl.
[Brief description of the drawings]
FIG. 1 is a front view showing a vehicle seat lock device according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing each component of the apparatus of the first embodiment.
FIG. 3 is a perspective view showing a mode of attaching the apparatus of the first embodiment to a seat.
FIG. 4 is an explanatory diagram showing a process of locking the device of the first embodiment.
FIG. 5 is a front view showing a first conventional vehicle seat lock device.
FIG. 6 is a perspective view showing a first conventional device.
FIG. 7 is a perspective view showing an example in which an elastic body is inserted into a striker of a second conventional seat lock device for a vehicle.
FIG. 8 is a cross-sectional view showing an example in which an elastic body is interposed on the latch side of the second conventional device.
[Explanation of symbols]
1S seat 11, 12 base 2 striker 3 latch 30, 40 swing member 31, 32, 41 projecting piece 33 recess 4 pole 34, 42 taper section

Claims (2)

A latch constituted by a swinging member having a recess having two projecting pieces and receiving a striker,
An automobile seat lock device comprising: a pole formed by a swinging member having a projecting piece inserted between the one projecting piece of the latch and the striker. In claim 1,
A seat lock device for an automobile, wherein a tapered portion is formed at a contact portion between the one protruding piece of the latch and the protruding piece of the pawl.

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