KR960011529B1 - Lock device for trunk door - Google Patents

Abstract

None.

Description

Trunk Door Lock

1 is an overall front view of a locking device according to the present invention.

2 is a cross-sectional view of the locking device.

3 is a front view of the latch.

4 is a front view of the ratchet.

5 is a front view of movement.

6 is a front view of the switch lever.

7 is a front view of the plate of the actuator unit.

8 is a front view of the door gear.

9 is a front view of the connecting lever.

10 is an explanatory diagram when the motor is operated.

11 is an explanatory diagram when a circuit of a motor is cut.

* Explanation of symbols for main parts of the drawings

1: base plate 2: striker

3: entry groove 4: cover

5 latch 6 axle

8: ratchet 10: leg portion

11: protrusion 14: pool

15: end

The present invention relates to a lock of a trunk door. Japanese Laid-Open Patent Publication No. 3-58571, comprising: a latch fixed to a base plate by a shaft and engaged with a striker to rotate; A ratchet fixed to the plate by a shaft and engaged with the latch to maintain an engagement state with the latch and the striker; A motor rotated by an operation switch installed in the vehicle; An output member for releasing the ratchet, which rotates in response to the elasticity of the return spring by the force of the motor, from the latch; A locking device for a trunk door is described, wherein one end is connected to the ratchet and the other end is connected to the key cylinder and has a movement interval for releasing the ratchet from the latch by rotation of the key cylinder.

In the above known example, the movement period moved by the key cylinder is returned to the previous state by the return spring provided on the key cylinder side. Therefore, in addition to the return spring for the output member, another return spring is required.

Therefore, this invention makes it possible to serve as the return spring for an output member the spring which returns between movements. Moreover, even if it is comprised in this way, the elasticity of the return spring for an output member may not overcome the resistance which moves between movements. At that time, a return spring is also attached to the key cylinder side as in the known example, but since the return spring is elastic in the return spring for the output member, a sufficiently small one can be used.

In the present invention, the operation of the motor by the operation switch in the vehicle can be made impossible by a simple configuration so that the trunk door cannot be opened without a key.

The present invention prevents the generation of noise during engagement and disengagement of the latch and ratchet.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The trunk door lock base plate 1 has an entry groove 3 into which the striker 2 enters in its lower position. The plate 1 and the striker 2 are either fixed to the trunk door and the other to the vehicle body. On the left side of the inlet groove 3, a metal latch 5 covered with a synthetic resin cover 4 which rotates in engagement with the striker 2 is fixed by a shaft 6, and on the right side, a latch 5 and The ratchet 8 made of metal, which is engaged with the cover 7 made of synthetic resin, which prevents the latch 5 from being reversed, is rotatably fixed by the shaft 9.

A spring 12 is provided between the leg 10 of the latch 5 and the protrusion 11 of the ratchet 8. When the striker 2 is engaged with the U-shaped groove 13 of the latch 5, the latch 5 is rotated counterclockwise to resist the elasticity of the spring 12 to be in the position of FIG. The pawl 12 of the ratchet 8 is engaged with the end 15 of the ratchet 5 to prevent the latch 5 from reversing.

The latch cover 4 and the ratchet cover 7 are formed with first buffers 16 and 17 which abut against each other when the end 15 and the pole 14 engage. By the abutment between the buffer portions, the occurrence of impact sound is suppressed when the ratchet 8 engages the latch 5 by the elasticity of the spring 12. In addition, when the spaces 18 and 19 are formed in the shock absorbing portions 16 and 17, respectively, the shock vibration is effectively absorbed, and the noise effect is further improved.

When the latch 5 is released from engagement with the ratchet 8, the latch 5 is rotated clockwise by the elasticity of the spring 12, and comes into contact with the periphery 20 of the plate 1 to stop. In order to prevent the noise generated by the contact, the latch cover 4 is integrally formed with the second shock absorbing portion 21 which contacts the main wall 20. Since the ratchet 8 is biased in the counterclockwise rotation direction by the elasticity of the spring 12, it is considered that the ratchet 8 does not contact the main wall 20. However, when the ratchet 8 is released from the latch 5, the ratchet 8 5) by being very strong and hit by the clockwise rotation against the elasticity of the spring 12 is impinged on the circumferential wall (20). Accordingly, the ratchet cover 7 is also integrally formed with a second buffer 22 that abuts against the circumferential wall 20. Vibration absorbing spaces 23 and 24 are also provided in each of the second shock absorbing parts 21 and 22.

Guide pins 25 are fixed to the upper and lower middle portions of the base plate 1, and the pins 25 engage with the long holes 27 formed in the center of the transversely long moving rod 26. The long end 28 is formed at the right end of the movement shaft 26, and one end 30 of the rod 29 is engaged with the long hole 28. The other end 31 of the rod 29 is connected to the pivot lever 33 of the key cylinder 32 attached to the trunk door or the vehicle body. A bend portion 34 is formed in the movement portion 26, and the bending portion 34 is engaged with the leg portion 35 of the ratchet 8 when the movement portion 26 slides to the right side in FIG. 1. ) Rotate it clockwise.

The switch lever 36 is disposed behind the moving section 26. The switch lever 36 has a hole slightly longer than the long hole 27, and the pin 25 is inserted into the long hole 37. A round hole 38 is formed at the right end of the switch lever 36, and the left end 30 of the rod 29 is engaged with the round hole 38. At the left end of the switch lever 36, a bent portion 39 is formed. The switch lever 36 and the bent portion 39 are formed of a conductive metal. The switch 40 is disposed in the vicinity of the bent portion 39. When the switch lever 36 rotates the key cylinder 32, the switch lever 36 is moved to the left and the rotation lever 33 is in the neutral position or the release position, and the bent portion 39 of the switch lever 36 is connected to the switch 40. The bent portion 39 and the switch 40 are brought into contact with each other in contact with each other. However, when the rotation lever 33 is in the locked position, the bent portion 39 is separated from the switch arm 41.

An actuator unit 42 is attached to the top of the base plate 1. The unit 42 has a pair of plates 43 and 44 at predetermined intervals, and the electric motor 45 is fixed between the plates 43 and 44. The worm 47 is fixed to the output shaft 46 of the motor 45. The worm 47 is engaged with the fan gear 48. The fan gear 48 is rotatably supported on the plates 43 and 44 by the central shaft 49. The fan-shaped gear 48 is provided with protrusions 50 protruding on both sides, and the protrusions 50 are arcuate grooves centered on the central axis 49 formed on the plates 43 and 44. Inset in 51).

The central shaft 49 is connected to the boomerang-shaped connecting lever 53 again.

Rotating is supported freely. A pin 54 is formed at one end of the connecting lever 53, and the pin 54 is engaged with an arc groove 55 about the central axis 49 formed in the fan gear 48. . The connecting lever 53 is biased clockwise in FIG. 1 by the return spring 56. The force of the return spring 56 is transmitted to the fan gear 48 via the pin 54 of the connecting lever 53, and the fan gear 48 is the projection 50 when the motor 45 is not driven. The right end of the groove 51 abuts and stops. A protrusion 52 is formed at the other end of the connecting lever 53, and the protrusion 52 is engaged with the long hole 57 formed at the left end of the movement lever 26. Thus, the force of the return spring 56 is also transmitted to the movement 26.

Reference numeral 58 denotes a battery mounted in a vehicle, and one terminal of the switch lever 36 and the battery 58 is connected to one terminal of the switch 40 and the motor 45 by a cord 59. When the switch 40 and the switch lever 36 are in contact with each other, the one terminal of the battery 58 and the one terminal of the motor 45 are connected. The other terminal of the battery 58 is connected to the operation switch 61 provided near the driver's seat, and the operation switch 61 and the other terminal of the motor 45 are connected by a cord 62.

When the trunk door is closed by hand, the striker 2 is engaged with the U-shaped groove 13 of the latch 5 to resist the elasticity of the spring 12 to rotate the latch 5 counterclockwise. When the latch 5 is rotated to a predetermined position, the ratchet 8 biased by the spring 12 is also rotated counterclockwise so that the first shock absorbing portion 17 of the ratchet cover 7 moves to the latch cover 4. When the ratchet 8 is brought into contact with the first buffer 16 and the latch 5 is then inverted by the spring 12's elasticity, the end 15 engages the pawl 14 of the ratchet 8. It will be in the state of FIG. When the ratchet 8 is rotated by the elasticity of the spring 12, the shock absorbing parts 16 and 17 having sufficient elasticity collide with each other, so that the impact sound is considerably reduced.

When opening the trunk door by the key cylinder 32, the key cylinder 32 is rotated clockwise by the key in FIG. Accordingly, the moving rod 26 is guided to the guide pin 25 through the rod 29 and moved to the right, and the bending piece 34 of the moving rod 26 engages the leg 35 of the ratchet 8. The ratchet 8 can be released from the latch 5 to open the door. At this time, since the projection 52 of the connecting lever 53 is connected to the long hole 57 of the moving shaft 26, the connecting lever 53 is counterclockwise in response to the elasticity of the spring 56, but the connecting lever ( The pin 54 of 53 moves only in the arc groove 55 of the fan gear 48, and the fan gear 48 is not rotated.

When the ratchet 8 is released from the latch 5, it is strongly hit by the latch 5 and rotates clockwise in FIG. 1, wherein the second wall 22 of the ratchet cover 7 is formed on the circumferential wall 20. Because of the collision, noise is not generated.

However, after the operation of opening the door as described above, the connecting lever 53 and the movement lever 26 are returned to the state of FIG. 1 by the elasticity of the return spring 56 and the key cylinder 32 is also returned to the neutral position. Goes.

When opening the door of the trunk by the motor 45, the operation switch 61 in the vehicle is turned on. Then, since the bend 39 and the switch 40 are in contact with each other, electricity flows from the battery 58 to the motor so that the motor is rotated and the fan gear 48 is rotated counterclockwise in FIG. Accordingly, the connecting lever 53 is also rotated counterclockwise through the pin 54 engaged with the circular groove 55 of the fan gear 48, and the moving lever 26 slides to the right through the pin 52. The bent piece 34 of the moving part 25 engages with the leg part 35 of the ratchet 8 so that the ratchet 8 can be released from the latch to open the door.

When the key is inserted into the key cylinder 32 in the state shown in FIG. 1, the pivoting lever 33 is moved to the locked position, and the key is still removed, the switch lever 36 to which the left end 30 of the rod 29 engages is removed. As shown in FIG. 11, it slides to the left direction, and the bending part 39 of the switch lever 36 falls in the state which falls from the switch 40. FIG. In this state, even if the operation switch 61 in the vehicle is operated, since the current is not supplied to the motor 45, the door of the trunk cannot be opened without a key.

Claims (8)

A locking device for a trunk door, comprising: a latch fixed by a shaft to a base plate and rotated in engagement with a striker, the shaft being fixed by the shaft to the plate and engaged by the latch and retaining the latch and the striker. A ratchet to rotate, an output member which rotates in response to the elasticity of the return spring by the force of the motor, and a movement interval which is slidably installed in the transverse direction between the ratchet and the output member; The movement period has one end connected to the output member and the other end connected to the key cylinder; The movement interval has an engagement portion which engages with the ratchet to disengage the ratchet from the latch when the slide is slid horizontally by the rotation of the output member or the key cylinder, and the movement interval is after the ratchet is released from the latch. Locking device for a trunk door, characterized in that to be returned to its original position by the elasticity of the return spring. The method according to claim 1, wherein the movement member and the output member are connected through a connecting lever, and the return spring returns the output member and the movement member to their original positions through the connecting lever, and the movement member is moved by the key cylinder. Locking device for a trunk door, characterized in that the output member is not rotated even if the slide. The apparatus of claim 1, further comprising: a switch lever that moves when the key cylinder is rotated in an opposite direction; The lock device for a trunk door, characterized in that having a switch to move the switch lever and disable the operation of the motor. A locking device for a trunk door having a battery, an operating switch and a key cylinder, comprising: a latch fixed to a base plate by a shaft and rotating in engagement with a striker, and fixed to the base plate by a shaft and engaged with the latch. The ratchet holding the latch and the striker, the motor driven by the operation of the switch, and the motor and the battery are installed between the latch and the striker. And a lock switch to make it easy; And said ratchet is disengaged from said latch by rotation of said motor or said key cylinder. A locking device for a trunk door, comprising: a base plate having a circumferential wall; A ratchet having a stage fixed to the plate by a shaft and engaged with a striker and rotating, a ratchet fixed to the plate by a shaft and having a mating pole of the ratchet, and provided between the latch and the latch. A ratchet cover having a spring and first and second buffer portions attached to said ratchet and having sufficient elasticity; And the first buffer portion collides with the latch before the pawl engages the end and the second buffer portion collides with the circumferential wall when the ratchet is released from the latch. 6. The lock of claim 5 wherein the first and second buffers are disposed on both sides of the ratchet. 6. The lock device of claim 5 wherein the device includes a latch cover attached to the latch and having a third elastic portion that is sufficiently elastic and abuts the first buffer portion. 8. The lock device according to claim 7, wherein the latch cover has a fourth buffer portion that abuts against the circumferential wall.