JPH0693766A - Door locking device - Google Patents

Abstract

PURPOSE:To reduce the size of span and miniaturize the whole device by allowing a torsion spring to energize a passive lever always to the initial position which was taken before the motion as linear movement. CONSTITUTION:A door locking mechanism 2 is furnished in either of a structure such as car body and a door and is detained with a detent member which is installed on the other member. Either of them is equipped with a door shutting mechanism 4 which includes a passive lever 42 to actuate the door locking mechanism 2 and a torsion spring 43 which is detained with this passive lever 42 and energizes it always to the initial position taken before the motion. A driving mechanism is provided to put the passive lever 42 in its motion as linear movement. This allows giving a sufficient energizing force with small span L to return the passive lever 42 to the initial position which was taken before the motion.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closing device for automatically retracting a door in an imperfect state to bring it into a completely closed state.

[0003]

2. Description of the Related Art Conventionally, as a door closing device of this type,
What is disclosed in Japanese Utility Model Laid-Open No. 2-96079 is known. The passive lever of the closing mechanism arranged on the door is rotated against the biasing force of the tension spring stretched between the bracket supporting the passive lever and the passive lever by the operation of the drive mechanism. Is engaged with the latch of the door locking mechanism arranged on the door to rotate the latch, whereby the locked member arranged on the vehicle body is engaged with the latch and retracted to close the door incompletely. It is completely closed from the state, and after this operation,
The passive lever has been returned to the initial position before the turning operation by the biasing force of the tension spring.

[0004]

However, in the above-mentioned door closing device, the tension spring is adopted as a means for returning the passive lever to the initial position,
If an attempt is made to obtain a sufficient biasing force to return the passive lever, the span between the bracket locking part where the tension spring is locked and the passive lever locking part becomes large (a large tension with a large number of windings is used). This requires a spring), resulting in an increase in the size of the entire device.

Therefore, the present invention aims to reduce the size of the entire apparatus and its technical problem.

[0006]

[Constitution of the invention]

[0007]

Means for Solving the Problems To solve the above technical problems, the technical means taken in the present invention include a structure such as a vehicle body, a door arranged to be openable and closable in the structure, and A door locking mechanism that is disposed on one of the structure and the door and that engages with a locked member disposed on the other of the structure and the door to hold the door in a closed state with respect to the structure. A door provided with one of the structure and the door for operating the door locking mechanism by an operation, and a door having a torsion spring that is locked to the passive lever and always urges the passive lever to an initial position before the operation. It has a closing mechanism and a drive mechanism which is disposed in the structure and the door and which linearly moves the passive lever.

[0008]

According to the above technical means, the torsion spring is used to return the passive lever to the initial position before the operation. Therefore, as compared with the conventional case, a sufficient biasing force for returning the passive lever can be obtained with a smaller span, and the entire apparatus can be miniaturized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the door closing device 1
Is a support including a door lock mechanism 2 and a bracket 31 and a bracket 32 which are mounted on a door lock mechanism 2 and a door lock mechanism 2 which are arranged in a door (not shown) which is openably and closably supported by a vehicle body (not shown). The member 3 includes a closing mechanism 4 supported by the support member 3 and linked to the door locking mechanism 2, and a drive mechanism 5 supported by the support member 3 and linked to the closing mechanism 4.

The door locking mechanism 2 will be described.

As shown in FIG. 2, a pole 22 and a latch 23 are rotatably supported in a case 21 by a pole shaft 22a and a latch shaft 23a, respectively. The latch 23 is provided with an engagement groove 23a that engages with a striker 24 fixed to the vehicle body that comes in through a groove 21a formed in the case 21 when the door is closed and a striker 2 and an engagement groove 23a. Claw portion 2 that engages with the pole 22 in the engaged state (latched state of one-dot chain line or two-dot chain line in FIG. 2)
3b and 23c are formed respectively. The pole 22 is constantly urged by a spring 25 in a direction in which it engages with the claw portions 23b and 23c of the latch 23, and the latch 3 is disengaged from the striker 24 by the spring 26 (see FIG. 2). It is always biased in the direction of the dashed line (unlatched state).

In the latch state, the latch 23 is
The rotation of the pawl portion 23b is restricted by the engagement between the pawl portion 23b and the pole 22 (half-latched state shown by the alternate long and short dash line in FIG. 2), and the door is held in a semi-closed state (incompletely closed state). Two
By the engagement of 3c and the pole 22 (the full-latch state shown by the solid line in FIG. 2), the rotational movement thereof is restricted, and the door is held in the fully closed state (fully closed state). Further, as is well known, the pole 22 is linked to an inside door handle (not shown) and an outside handle (not shown) for opening and closing the door, and the pawl portion 23b is attached to the pole 4 by operating each handle. , 23c are linked with a well-known open lever (not shown) for performing a rotation operation for releasing the engagement. The latch shaft 23a extends outward through the case 21, and a latch lever 27 linked to the closing operation mechanism 4 described later is fixed to the tip of the latch shaft 23a so as to rotate integrally with the latch 23 ( (See Figure 1). As is well known, the door closing operation is not performed by the operation of each handle, but is performed by directly pressing the door in the closing direction.

The closing mechanism 4 will be described.

As shown in FIGS. 1, 3 and 4, an L-shaped bracket 31 is fixed on the case 21 of the door locking mechanism 2, and the bracket 31 has an active lever 41 and a rod-shaped active lever 41. The L-shaped passive levers 42 are arranged opposite to each other and supported. Support shafts 31a and 31b are planted in the bracket 31,
The active lever 41 and the passive lever 42 are formed with elongated holes 41a, 41b, 42a, 42b having the same length, respectively. The support shaft 31a and the support shaft 31b are slidably inserted into the long holes 41a and 42a and the long holes 41b and 42b, respectively, so that the active lever 41 and the passive lever 42 can be inserted into the long hole 4 with respect to the bracket 31.
It is supported so as to be linearly movable within the range of 1a, 41b, 42a, 42b. The elongated holes 41a and 42a are formed by the horizontal portions 41aa and 42aa and the inclined portions 41ab and 42a.
b. As a result, the linear movement of the passive lever 42 is a horizontal linear movement guided by the horizontal portions 41aa, 42aa and a rotational linear movement guided by the inclined portions 41ab, 42ab. The long holes 41b, 4
2b has a linear shape. An elongated hole 41c is formed in the active lever 41, and a drive mechanism 5 described later is linked thereto. The passive lever 42 is formed with an engaging portion 42d that can be engaged with the latch lever 27 and that is arranged in a vertical state with respect to the rotating surface of the latch lever 27. Further, a winding portion 43a is locked between a bracket 31 and the passive lever 42 by a locking portion 31c formed on the bracket 31, and one end 43b is fixed on the bracket 31.
There is provided a torsion spring 43 which is locked to the lock lever 42 and the other end 43c of which is locked to a locking portion 42c formed on the passive lever 42, and the passive lever 42 receives the urging force of the torsion spring 43, as shown in FIG. It is biased in the left direction to the initial position shown in FIG. 1 (support shaft 31a is elongated hole 41a,
1 is the right end of FIG.
And the support shaft 31b is held at the right end of the elongated holes 41a and 42a in FIG. 1). As described above, the torsion spring 43 is used as a means for biasing and holding the passive lever 42 at the initial position. As a result, as shown in FIG. 8, the locking portion 42c and the locking portion 31
The span L with respect to c, that is, the space occupied by the torsion spring 43 can be made smaller than in the conventional case, and the entire door closing device 1 can be made smaller.

The passive lever 42 is formed with a protruding shaft 42e which is punched out toward the active lever 41 by press molding. A cancel lever 44 is rotatably supported on the protruding shaft 42e, and the active lever 4 is
1 and the passive lever 42. A pressing wall 44a and a restricting wall 44b are formed at the tip of the cancel lever 44. The active lever 41 has a passive lever 42 formed by press molding.
A protrusion 41d is formed on the side, and the rotation of the cancel lever 44 causes the cancel lever 4 to move.
The pressing wall 44a and the restriction wall 44b of No. 4 are arranged to be disengaged from each other. The cancel lever 44 is linked to an open lever via a lever 46 (see FIG. 1) rotatably supported by the bracket 31. In addition, the winding portion 4 is provided between the passive lever 42 and the cancel lever 44.
5a is locked to a locking portion 42f formed on the passive lever 42, one end 45b is locked to a locking portion 42f of the passive lever 42, and the other end 45c is locked to a locking portion 44c formed on the cancel lever 44. A stopped torsion spring 45 is provided, and the cancel lever 44 receives the urging force of the torsion spring 43.
It is urged counterclockwise as shown in FIG.
4a and the regulation wall 44b are engaged with the protrusion 42f)
Held in.

The drive mechanism 5 will be described.

As shown in FIG. 1, the bracket 32 fixed to the bracket 31 has a plurality of gears (not shown).
The speed reduction mechanism 51 configured by combining the above is fixed.
A motor 52 is attached to an input shaft (not shown) of the reduction mechanism 51.
Are connected, and the cam lever 53 is connected to the output shaft 51a. This cam lever 53 has a cam shaft 53a.
Is formed, and the long hole 41c of the active lever 41 is formed.
The side wall 41ca or the side wall 41cb of the elongated hole 41c is abutted and pressed by the rotating operation.

Next, the operation will be described.

FIG. 1 shows the initial state of the door locking mechanism 2
The door of the latch 23 is opened in the unlatched state of the chain double-dashed line shown in FIG. 2, and the active lever 41 and the passive lever 42 of the closing mechanism 4 contact the cam shaft 53a of the cam lever 53 and the side wall 41ca of the slot 41c. The contact pressing force and the torsion spring 43 hold the respective initial positions, and the cancel lever 44 moves the torsion spring 45.
It is urged to rotate by and is held in a locked state.

When the door is closed in this state, the striker 24 enters the groove 21a of the case 21 and engages with the engaging groove 23a of the latch 23 to engage the latch 2 with the latch 2.
3 is rotated to enter the half-latched state indicated by the alternate long and short dash line in FIG. 2 and the striker 24 is retracted, so that the door is in the half-closed state. At this time, the latch lever 27 also rotates in the same manner as the latch 23, and enters the state shown in FIG. When the latch lever 27 changes from the state shown in FIG. 1 to the state shown in FIG. 5, the passive lever 42 is in the initial position shown in FIGS.
Since a is located at the inclined portion 42ab of the long hole 42a, the engagement portion 42d is retracted from the turning locus of the latch lever 27. Therefore, the rotation of the latch 23 is not hindered by the interference between the latch lever 27 and the engaging portion 42d.

When the half-closed state of the door is detected by a switch means (not shown) or the like, as shown in FIG.
The motor 52 operates and the cam lever 53 rotates via the speed reduction mechanism 51. By this rotation of the cam lever 53, the cam shaft 53a abuts and presses the side wall 41cb of the elongated hole 41c of the active lever 41, and the active lever 41 linearly moves from the initial position shown by the solid line in FIG. 6 to the right direction in FIG. This linear movement operation of the active lever 41 is transmitted to the passive lever 42 via the cancel lever 44 because the pressing wall 44a of the cancel lever 44 is pressed by the protruding shaft 41d of the active lever 41, whereby the linear movement operation is transmitted. The passive lever 42 is also a torsion spring 43.
6 is moved linearly from the initial position shown by the solid line in FIG. 6 to the right direction shown in FIG.

The linear movement of the active lever 41 and the passive lever 42 is performed by the elongated holes 41a, 41b, 42.
As it will be performed while being guided by a and 42b,
At the initial stage of this operation, the active lever 41 and the passive lever 42 move the inclined portion 4 of the elongated holes 41a, 42a.
By 1ab and 42ab, the support shaft 31b can be rotated. That is, the active lever 4
1 and the passive lever 42 are inclined portions 41 from the initial position.
After being guided by ab and 42ab and moving linearly downward in FIG. 6, it is guided by horizontal portions 41aa and 42aa and moving horizontally straight in FIG. Reach the operating position. As a result, the passive lever 4
The second engaging portion 42d linearly moves to the right in FIG. 6 while being moved on the rotation locus of the latch lever 27, engages with the latch lever 27, and the latch lever 27 is dragged and rotated. As a result, the latch 23 also rotates in the same manner as the latch lever 27 to enter the full-latch state shown by the solid line in FIG. 2, the striker 24 is pulled in, and the door is fully closed.

After the latch 23 is in the full latch state,
The cam lever 53 continues to rotate by the operation of the motor 52, and the cam shaft 53a abuts and presses the side wall 41ca of the elongated hole 41c. As a result, the active lever 41 linearly moves from the operating position in the opposite direction to that described above, that is, moves horizontally in the left direction in FIG. 6, and then linearly moves in the upward direction in FIG. 6 to return to the initial position. The passive lever 42 also linearly moves from the operating position in the opposite direction to the above by the urging force of the torsion spring 43, that is, moves horizontally leftward in FIG. 6 and then linearly moves upward in FIG. Return to the initial position. The engagement portion 42d is changed from the state shown in FIG.
As in the case of reaching the state shown in the drawing, the ratchet lever 27 is retracted from the turning locus, and the turning of the latch 23 when the door is opened by operating the inside handle or the outside handle after that is performed. And the engaging portion 42d
It will not be hindered by interference with.
At this time, the urging force of the torsion spring 43 acts in the direction of arrow F as shown in FIG. 8, so that the component forces F1 and F2 cause the torsion lever 43 to move the passive lever 42 as shown in FIG. The push lever 42 is urged in the leftward direction and the upward direction shown in FIG. 6, that is, in the horizontal linear movement direction and the rotational linear movement direction of the passive lever 42, so that the number of parts is reduced and the passive lever 42 is formed along the elongated hole 41a. Can be smoothly returned. The motor 52 operates for a predetermined time and automatically stops after it is detected that the latch 23 is in the full-latch state shown by the solid line in FIG.

When the door 2 is changed from the open state to the fully closed state, the door does not stop in the half closed state, and if the door remains in the fully closed state, the half closed state of the door is not detected, and the closing mechanism is closed. 4 does not work.

As shown in FIG. 7, when the occupant's finger, clothes, or the like is sandwiched between the door and the vehicle body, the passive lever 42 linearly moves to move the latch 3 from the half-latched state to the full-latched state. When the inside handle or the outside handle is operated to rotate the cancel lever 44 in the clockwise direction as shown in FIG. 41d and the cancel lever 4
The engagement between the pressing wall 44a and the restriction wall 44b of No. 4 is released, and the lock state is established. As a result, the linear movement operation of the active lever 41 is not transmitted to the passive lever 43, and only the active lever 41 is in the idle driving state in which the linear movement operation is performed in the right direction in FIG. 7 (to the operating position indicated by the chain double-dashed line in FIG. 7). . As a result, the linear movement operation of the passive lever 43 is stopped midway and the rotation operation of the latch 3 is stopped. That is, the operation of the closing mechanism 4 from the half-closed state to the fully-closed state of the door is stopped. At this time, the passive lever 41 is returned to the initial position by the torsion spring 45, and the latch 23 has the open lever which is the pole 22.
Also, since the latch 23 and the pole 22 are disengaged from each other, the state returns to the unlatched state.

As shown in FIG. 9, the torsion spring 43 may have the other end 43c bent by the locking portion 42c of the passive lever 42 bent. As a result, the span L between the locking portion 42c of the passive lever 42 and the locking portion 31c of the bracket 31 can be made smaller. Further, since the component force F1 of the biasing force acting on the passive lever 42 in the direction of the arrow F when the passive lever 42 is in the operating position, that is, the biasing force of the passive lever 42 in the horizontal linear movement direction can be increased.
Even if the stroke of the linear movement of the passive lever 42 from the initial position to the operating position is large, the passive lever 42 can be reliably returned from the operating position to the initial position by the biasing force of the torsion spring 43.

[0027]

According to the present invention, since the torsion spring is used to return the passive lever to the initial position before the linear movement operation, the urging force sufficient to return the passive lever in a smaller span than the conventional one. Therefore, the entire device can be downsized.
Further, since the passive lever can be biased in two directions by one torsion spring, a smooth return operation of the passive lever can be obtained and the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a door closing device according to the present invention.

FIG. 2 is a plan view of a door locking mechanism.

FIG. 3 is an exploded perspective view of a closing mechanism.

FIG. 4 is a cross-sectional view of the closure mechanism.

FIG. 5 is a perspective view corresponding to FIG. 1 when the door locking mechanism is operated up to a half-latched state.

FIG. 6 is an operation explanatory view of the door closing device according to the present invention.

FIG. 7 is an operation explanatory view of the door closing device according to the present invention.

FIG. 8 is an enlarged view showing a torsion spring in a locked state.

FIG. 9 is an enlarged view corresponding to FIG. 8 showing another torsion spring.

[Explanation of symbols]

 2 Door locking mechanism 3 Support member 4 Closing mechanism 5 Drive mechanism 42 Passive lever 43 Torsion spring

Claims (3)

[Claims] 1. A structure such as a vehicle body, a door that is openably and closably mounted on the structure, one of the structure and the door, and one of the structure and the other of the doors. A door lock mechanism that engages with the locked member to hold the door in a closed state with respect to the structure, and operates the door lock mechanism by an operation provided on one of the structure and the door. A door closing mechanism having a passive lever and a torsion spring that is locked to the passive lever and always urges the passive lever to an initial position before the operation, and a drive mechanism that operates the passive lever disposed on the structure and the door. Door closing device having. 2. The passive lever, which is supported by a supporting member fixed to the door locking mechanism, is linearly movably supported by the supporting member so that the door locking mechanism can be operated. 2. The door closing device according to claim 1, wherein the winding portion is supported by the bracket, and the torsion spring has one end locked to the passive lever and the other end locked to the bracket. . 3. The closing mechanism is supported by a supporting member fixed to the door locking mechanism, and has a horizontal linear movement and a rotational linear movement so that the supporting member can operate to operate the door locking mechanism. The torsion spring, which is supported by the linear lever and the bracket, has a winding portion supported by the bracket, and one end that is bent and formed is locked by the passive lever and the other end is locked by the bracket by the torsion spring. Claim 1 which is constituted by
Door closing device as described.