JP2588819Y2 - Door lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device used for a door of an automobile, and more particularly to a key release mechanism.

[0002]

2. Description of the Related Art A door lock device is provided with a lock mechanism for fixing a striker to one of a door and a vehicle body and for holding or releasing the striker on the other. The lock mechanism generally has a hook for gripping or releasing the striker and a ratchet for restricting the rotation of the hook, and the ratchet is normally biased in a direction for holding the hook in the locked position. The lock is released by rotating the ratchet against this urging force. The operation of rotating the ratchet in the unlocking direction can be performed by at least the operation of the unlock lever and the operation of rotating the key rotor. Further, in the electromagnetic lock release type, a ratchet is rotated in a lock release direction by a solenoid having a plunger driven reciprocally. The ratchet is pulled and displaced to the unlock position by the plunger.

However, it is difficult to reduce the size of such a solenoid-type unlocking mechanism because of the loud operating noise of the solenoid itself and the restriction of the driving force required to overcome the stroke required by the plunger and the urging force of the ratchet. Was. In view of such a background, the present applicant has already proposed a door lock device using a small and small operating noise motor actuator instead of a solenoid as an electromagnetic actuator (Japanese Patent Application No. 1-43971). We have further improved the locking device and proposed a smaller, especially thinner door locking device (Japanese Utility Model Application No. 1-120385).
issue).

In the door lock device provided with such a motor actuator, the present applicant further attaches an interior lamp switch for turning on and off the interior lamp switch of the vehicle body directly to the base of the door lock device, Has been devised to be turned on and off by a hook that rotates when the door is opened and closed.

However, in the door lock device having such a structure, the motor connector for supplying power to the motor actuator and the interior lamp switch connector are separately prepared. Both connectors had to be respectively connected to the vehicle body side. For this reason, it has been found that the number of work steps is large, the assembling work is troublesome, and there is a risk of inconvenience such as an increase in cost.

[0006]

[Purpose of the Invention] The present invention has a small number of man-hours for assembling the vehicle, even though the interior lamp switch is assembled.
An object of the present invention is to provide a door lock device capable of simplifying an operation.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a striker fixed to one of a door and a vehicle body, and a lock mechanism for locking or releasing the striker; releasing a striker of the lock mechanism. A lock release mechanism having a housing accommodating an electric motor to be locked; and an interior lamp switch for turning on / off an interior lamp of a vehicle in conjunction with a striker releasing operation and a locking operation of the lock mechanism, respectively. A housing of the release mechanism supports a moving member that moves in conjunction with the striker releasing operation and the locking operation of the lock mechanism, and a terminal member that comes into contact with and separates from the moving member. The switch is connected to one of the positive and negative electrodes and the other is connected to the moving part. And a terminal for an indoor lamp switch are coaxially supported by the housing, and a pin member to be inserted through a coil-shaped portion of a torsion spring for rotating and biasing the moving member is provided. A flange portion that locks one end of the portion; an annular elastic portion that contacts the other end of the coil-shaped portion to press the moving member against the indoor lamp switch terminal; and the annular elastic portion. It is characterized by having a locking portion to be locked to the housing in a state where the moving member and the terminal for the indoor lamp switch are brought into pressure contact with each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on illustrated embodiments. The base 12 of the lock mechanism 11 is fixed to, for example, a door, and the striker 13 gripped or released by the lock mechanism 11 is fixed to the vehicle body.

As shown in FIG. 1, a striker entrance groove 14 is formed in the base 12, and a hook 17 and a ratchet 18 are pivotally mounted on both sides of the striker entrance groove 14 by rotating support shafts 15 and 16, respectively. ing. The hook 17 is provided with the striker holding groove 17a and the locking portion 1.
7b. On the other hand, the ratchet 18 has a lock portion 18a that engages with and disengages from the lock engagement portion 17b. When the lock portion 18a and the lock engagement portion 17b are engaged, the striker 13 is inserted into the striker holding groove 17a. Is held. This is the locked state.

The hook 17 and the ratchet 18 are rotationally urged by a tension spring 20 stretched between the hook 17 and the ratchet 18 in a direction in which the lock engaging portion 17b is engaged with the lock portion 18a.
That is, when the hook 17 is disengaged from the lock portion 18a of the lock engaging portion 17b, the hook 17 rotates by the force of the tension spring 20 in a direction to open the striker 13 from the striker holding groove 17a. The above is a normal lock mechanism.

As shown in FIG. 6, a ratchet 18 is provided at its tip with a roller 21 to be interlocked with an electric lock release mechanism 30, and a rod mounting portion 22 is formed above the roller 21 in the figure. I have. This rod mounting part 22
Is formed by bending the ratchet tip so as to protrude from the back surface of the base 12. The rod mounting portion 22 is configured so that a rod 24 connected to a key rotor (not shown) can slide through a bush, and can rotate the ratchet 18 counterclockwise when sliding to the left in FIG. Mated. The rod mounting portion 22 is further linked to a lock release lever via a rod 24.

The base 12 has a rotating support shaft 33,
A cam-integrated worm wheel 34 is rotatably supported. The cam-integrated worm wheel 34 is
The cam 34a engages with the roller 21 of the ratchet 18 and a worm gear tooth surface 34d formed on the peripheral edge of the cam 34a, which is always urged to return to the initial position shown in FIG. have. The cam 34a is a cam having a shape in which the distance from the rotation support shaft 33 is gradually increased.
When the cam 34a rotates counterclockwise from the position shown in FIG. 7, the cam 34a pushes the roller 21 of the ratchet 18, and the ratchet 18 is turned to the unlock position where the lock portion 18a releases the engagement with the lock engagement portion 17b. To rotate.

A motor actuator (electric motor) 35 of an electric lock release mechanism 30 is fixed to an extension board 12a (FIG. 6) of the base 12 via a motor housing (housing) 19, and its output shaft 35a is fixed. The worm gear 36 fixed to the worm wheel 3
4 meshes with the tooth surface 34d. This worm gear 3
The gear ratio between the worm wheel 6 and the cam-integrated worm wheel 34 is set such that when the worm wheel 34 returns to the initial position by the torsion spring 38, the worm gear 36 can be rotated from the worm wheel 34 side.

On the other hand, the motor housing 19 has an interior lamp switch SW which operates in conjunction with the striker release operation and the lock operation by the lock mechanism 11 to turn on / off an interior lamp (not shown) provided on the vehicle body.
Is supported. Hereinafter, the structure will be described in detail.

As shown in FIG.
Has the following members in addition to the motor actuator 35 and the cam-integrated worm wheel 34 described above. That is, the terminal member 47 constituting the interior lamp switch SW is supported and fixed to the motor housing 19 at the lower side in the figure, and the switch lever (moving member) 45 constituting this switch SW is rotatable. Supported. The motor housing 19 also has a motor drive terminal 40 and an interior lamp switch SW terminal 42 to be connected to the positive and negative electrodes of the positive electrode, and a motor drive terminal 49 to be connected to the negative electrode of the positive and negative electrodes. , Each being insert molded.

The motor drive terminal 40 and the interior lamp switch terminal 42 are configured to be connectable to the vehicle body by a single connector 41. The terminal member 47 is connected to a motor driving terminal 49, and the terminal member 47 is fixed to the base 1 by a fixing pin 48.
2, the motor drive terminal 49 and the terminal member 47 are set to the same potential as the base 12.

As shown in FIG. 3, the switch lever 45 is rotatable with respect to the motor housing 19 by a rotation support shaft (pin member) 44 that passes through the interior lamp switch terminal 42 together with the switch lever 45. Supported. The pivot 44 is made of a synthetic resin material or the like.
Fitting small diameter portion 44a, flange portion 44b, large diameter portion 44c,
An annular elastic portion 44d and a locking portion 44f are sequentially formed. The rotation support shaft 44 further has an enlarged-diameter portion 60 located at the tip of the locking portion 44f. Annular elastic part 44
3 d is formed so that its outer peripheral edge hangs downward in FIG. 3, and has an elastic force that presses the switch lever 45 toward the indoor lamp switch terminal 42 when attached to the motor housing 19. The enlarged diameter portion 60 has a space portion 60a formed at the center thereof to have elasticity in a direction orthogonal to the axial direction, and is inserted into a through hole 19c formed on one side surface 19a of the motor housing. When the diameter of the through hole 19c is reduced, the diameter of the through hole 19c is increased.
abuts around c.

Therefore, prior to the assembling operation of the electric lock release mechanism 30, the large-diameter portion 44c of the rotation support shaft 44 is fitted with the coil-shaped portion 43a of the torsion spring 43, and the coil-shaped portion 43a is connected to the flange portion 44b. And annular elastic part 44d
It is prepared in a state of being sandwiched between. Then, the switch lever 45 is positioned so that the rotation support hole 45c corresponds to the through hole 42a of the indoor lamp switch terminal 42 in which the through hole 42a corresponds to the through hole 19c of the one side surface 19a of the motor housing. In the state, the locking portion 4 of the pivot 44
4f, that is, the enlarged diameter portion 60 is pushed from the rotation support hole 45a to penetrate the through holes 42a and 19c. When the enlarged diameter portion 60 protrudes from the through hole 19c, the diameter of the enlarged portion 60 is increased to abut on the periphery of the through hole 19c. 45, the urging force of the coiled portion 43a and the annular elastic portion 44
d) It is rotatably supported by the motor housing 19 in a state of being brought into pressure contact with the interior lamp switch terminal 42 by its own elastic force. The small-diameter fitting portion 44a of the rotation support shaft 44 is provided with a support hole 1 formed in the other side surface 19b of the motor housing 19.
9d.

As described above, when the rotation support shaft 44 of this embodiment is used, the work of assembling the switch lever 45 to the motor housing 19 with the rotation support shaft 44 holding the torsion spring 43 in advance is performed. Therefore, the number of operation steps can be reduced and the operation can be simplified as compared with the case where the rotation support shaft 44 and the torsion spring 43 are separately assembled. Note that the annular elastic portion 44d is formed of a coil-shaped portion 43a.
And the switch lever 45 is pressed against the urging force and its own elastic force.
If the elastic force of d itself is further increased, the switch lever 45 can be pressed against only the elastic force of the annular elastic portion 44d.

The switch lever 45 is always locked in the counterclockwise direction in FIG. 1 by locking both ends of the torsion spring 43 to the back surface of the contact portion 45a of the switch lever 45 and the motor housing 19 side. It is biased to rotate. Accordingly, the switch lever 45 contacts and conducts with the terminal member 47 in its free state, and when locked, moves in the direction away from the contact portion 47a of the terminal member 47 by the hook 17 that rotates counterclockwise in FIG. It is turned. In this case, the switch lever 45 is pressed by the pressing portion 17c of the hook 17,
A cover 46 made of a synthetic resin is attached to a portion engaging with the switch 7c, that is, a tip portion of the switch lever 45, so that insulation and noise reduction are achieved. The cover 46 made of synthetic resin
Instead, the tip portion of the switch lever 45 may be coated with a synthetic resin material.
A synthetic resin cover or a synthetic resin material.

The door lock device having the above-described structure is therefore provided with the striker 13 in the striker holding groove 17a of the hook 17.
Has entered, and the lock engagement portion 17b is engaged with the lock portion 18a of the ratchet 18 in the locked state of FIG.
When the motor actuator 35 is driven, the output shaft 35
a, the cam-integrated worm wheel 34 is rotated in the counterclockwise direction through the worm gear 36 and the tooth surface 34d.
Then, the cam 34a is eventually moved to the roller 2 of the ratchet 18.
1 and begins to push it, causing the ratchet 18 to pivot away from the hook 17. When the cam-integrated worm wheel 34 is rotated by a certain angle or more and the lock portion 18a and the lock locking portion 17b are disengaged, the hook 17 rotates clockwise by the force of the tension spring 20, and the hook 17 rotates in the striker holding groove 17a. The striker 13 held is released. Thus, the lock is released and the door opens.

In the state shown in FIG. 1, the interior lamp is turned off (turned off) by being rotated clockwise in FIG. 1 by the pressing portion 17c of the hook 17 and separated from the contact portion 47a of the terminal member 47. As shown in FIG. 2, the switch SW turns the hook 17 in the clockwise direction in FIG. 3 with the opening of the door, and separates the pressing portion 17 c from the tip of the switch lever 45. The contact portion 45a of the switch lever 45 comes into contact with the contact portion 47a of the member 47, whereby the switch lever 45 and the terminal member 47 conduct, and the indoor lamp is turned on (lights up).

The above-described unlocking operation is performed by energizing the motor actuator 35 by a normal push button switch. When the energization ends, the cam-integrated worm wheel 34 returns to the initial position by the force of the torsion spring 38, and the ratchet 18 returns to the lock position. In this state, when the door that has been opened is closed, the striker 13 that has entered through the striker entrance groove 14 is closed.
Enters the striker holding groove 17 a of the hook 17.
Then, the hook 17 pushed by the striker 13 rotates around the rotation support shaft 15, and the back surface of the lock engagement portion 17b pushes the ratchet 18 to once rotate the ratchet 18 to the unlock position, and the striker 13 further enters. Then, the lock portion 18a and the lock engagement portion 17b engage to return to the initial locked state.

As a result, in the state shown in FIG. 2, the hook 17 is released from the pressing portion 17c and pivots counterclockwise in FIG. 2 to come into contact with the contact portion 47a of the terminal member 47,
The interior lamp switch SW that has turned on (lit) the interior lamp is pressed by the pressing portion 17c of the hook 17 that rotates counterclockwise in FIG. As shown in FIG.
The contact portion 45a of the switch lever 45 is separated from the contact portion 47a of the terminal member 47. As a result, the switch lever 45 and the terminal member 47 are insulated, so that the indoor lamp is turned off (turned off).

[0025]

As described above, according to the door lock device of the present invention, the interior lamp switch can be assembled together with the unlocking mechanism simply by assembling the housing, thereby reducing the number of work steps and simplifying the work. As a result, the cost can be reduced accordingly. Furthermore, since the work of assembling the switch lever with respect to the housing can be performed while the torsion spring is held in advance on the pin member, the number of work steps can be reduced as compared with the case where the pin member and the torsion spring are separately assembled. Work can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing a door lock state of a door lock device according to the present invention.

FIG. 2 is a front view showing the door lock state of the door lock device.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an external perspective view showing the motor housing in a state in which a lock mechanism and an indoor lamp switch are housed.

FIG. 5 is an external perspective view showing the motor housing viewed from a side opposite to FIG. 4;

FIG. 6 is an exploded perspective view showing the door lock device according to the present invention.

[Explanation of symbols]

 Reference Signs List 11 lock mechanism 12 base 13 striker 14 striker entry groove 15 16 shaft 17 hook 17a striker holding groove 17b lock locking portion 17c pressing portion 18 ratchet 18a lock portion 19 motor housing (housing) 19a back surface 19c through hole 20 tension spring 21 roller 30 Electric lock release mechanism 33 Rotary support shaft 34 Cam integrated worm wheel 34a Cam 34d Worm gear tooth surface 35 Motor actuator (electric motor) 36 Worm gear 38 Torsion spring 40 Motor drive terminal 42 Indoor lamp switch terminal 43 Torsion spring 43a Coiled portion 44 Rotating support shaft (pin member) 44a Fitting small diameter portion 44b Flange portion 44c Large diameter portion 44d Annular elastic portion 44f Locking portion 45 Switch lever (moving member) 46 Synthetic tree Ltd. cover 47 terminal member 48 fixed pin 49 motor drive terminal 60 the enlarged diameter portion 60a space SW room lamp switch

Claims (2)

(57) [Scope of request for utility model registration] 1. A striker fixed to one of a door and a vehicle body, a lock mechanism for locking or releasing the striker, and a lock mechanism provided on the other; a housing containing an electric motor for releasing the striker of the lock mechanism. A door lock device comprising: a lock release mechanism; and an interior lamp switch for turning on / off an interior lamp of the vehicle in conjunction with a striker releasing operation and a lock operation of the lock mechanism, respectively. A moving member that moves in conjunction with the striker releasing operation and the locking operation, and a terminal member that comes into contact with and separates from the moving member. The moving member and the terminal member are connected to one or the other of the positive and negative electrodes of the indoor lamp switch. To the moving member and the terminal for the indoor lamp switch. And a pin member to be inserted through the coil-shaped portion of the torsion spring for urging the moving member to rotate. The pin member is connected to one end of the coil-shaped portion. A flange portion to be stopped; an annular elastic portion for bringing the other end portion of the coil-shaped portion into contact with the movable member to press against the indoor lamp switch terminal; and a movable member and the indoor lamp switch by the annular elastic portion. A locking portion that is to be locked to the housing in a state where the terminals are brought into pressure contact with each other. 2. The housing according to claim 1, wherein the housing further has a through hole through which the locking portion of the pin member passes, and the locking portion is pushed into the through hole and expands after passing through the through hole. A door lock device having an enlarged diameter portion.