JPH052758Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an actuator for locking/unlocking door locks and having a rotary drive source and a speed reduction mechanism therefor.

"Conventional technology" As a conventional actuator, for example,
There is one disclosed in Publication No. 60-220242.

In other words, the publication states that the door lock has a planetary gear reduction mechanism, is capable of unlocking and locking the door lock, and is not only operated by the actuator, but also operates on the door lock side without interfering with the actuator. A clutch mechanism for disconnecting the door lock from the actuator is disclosed.

``Problem that the invention aims to solve'' However, with such conventional actuators, the connection with the door lock is cut off when the actuator is not operating, so even if the door is locked, children can play with it. There is a risk that the lock may be unlocked by someone else or a burglary tool, etc.
In order to improve theft prevention and safety, complicated mechanisms and devices are required, and there is a problem in that they cannot be provided at low cost.

The present invention was developed by focusing on these conventional problems, and aims to provide an actuator for locking/unlocking that has excellent anti-theft properties and safety, and can be provided easily and at low cost. There is.

``Means for Solving the Problems'' The gist of the present invention to achieve this purpose is to provide an actuator for locking/unlocking a door lock and having a rotary drive source and a speed reduction mechanism for the locking/unlocking actuator. A relay mechanism is provided, and the output relay mechanism is configured to include an output member connected to the locking/unlocking mechanism of the door lock, a relay member connected to the output member through play corresponding to the locking/unlocking stroke, and an actuator to unlock the door. When the relay member is returned to a neutral position where the output member can be locked and unlocked, and when the actuator locks the relay member, the relay member is stopped at a restraining position where it remains interposed between the output member and the deceleration mechanism. The actuator for locking/unlocking is characterized in that it is configured to include a biasing member for causing the locking/unlocking operation.

"Operation" When the door lock is operated by the operation of the actuator, the output of the rotary drive source is decelerated by the deceleration mechanism and transmitted to the door lock.
The door lock is locked and unlocked.

When unlocked by actuator operation, the relay member can return to the neutral position,
The output member can move without being constrained by the speed reduction mechanism, and the door lock can be manually locked and unlocked.

When the actuator is activated to lock the lock, the relay member does not return to the neutral position and remains connected to the deceleration mechanism, and the output member can only be moved while the deceleration mechanism and rotary drive source are being moved. First, the operating force is extremely heavy, making it virtually impossible to manually unlock the door lock.

"Embodiments" Hereinafter, various embodiments of the present invention will be described based on the drawings. Note that similar parts in each embodiment are designated by the same reference numerals, and redundant explanation will be omitted.

1 to 7 show a first embodiment of the present invention.

As shown in FIGS. 6 and 7, a door lock 1 is attached to the free end of a door A of an automobile, and a lock/unlock lever 1a of the door lock 1 is connected to a connecting rod 2 and a bell crank 3 for manual locking/unlocking. A knob 4 is connected to the knob 4, and an actuator 10 for locking/unlocking is connected via a connecting rod 5. The lock/unlock knob 4 is provided inside the vehicle interior, and the actuator 10 is installed inside the door A.

In the actuator 10, an electric motor 30 serving as a rotational drive source is fixed to a housing 20, a deceleration mechanism 40 is connected to the output shaft of the electric motor 30, and an output relay mechanism 5 relays the output from the deceleration mechanism 40.
0 is provided.

As can be seen in FIGS. 1 to 5, the speed reduction mechanism 40
consists of a small gear 41 fixed to the output shaft of the electric motor 30, and a reduction gear 43 that is pivotally supported to the housing 20 via a pivot 42 and has a small tooth portion 43a and a large tooth portion 43b.

The output relay mechanism 50 includes a relay member 52 pivotally supported on the housing 20 via a pivot 51, and an output member 5.
5 and a biasing member 59.

In this embodiment, the relay member 52 is a fan-shaped gear, and the small teeth 43a of the reduction gear 43 mesh with the teeth of the relay member 52 to constitute a part of the reduction mechanism, and the engagement end 53 is directed toward the output member 55. It's been extended.

The output member 55 has an output end 56 at its tip and is connected to the door lock 1 via the connecting rod 5, and a base 57 of the output member 55 is connected to the housing 2.
It is slidably fitted into a support groove 11 provided at 0. A vertical engagement groove 58 is carved in the base 57 of the output member 55, and the relay member 5
The engagement protrusion 53a at the tip of the engagement end 53 of No. 2 is engaged. Both inner ends of the engagement groove 58 are locking engagement ends 58a.
and an unlocking engagement end 58b.

A play s corresponding to the movement stroke of the output member 55 is provided between the engagement protrusion 53a and the engagement groove 58, and as shown in FIG.
When is in the neutral position, the output member 55 is set to be movable between the solid line position and the imaginary line position.

The biasing member 59 has a coil portion wound around the pivot shaft 51 of the relay member 52, and a fixed end 59a attached to the housing 20.
The operating end 59b is locked to a part of the relay member 52.
1 and urges the relay member 52 clockwise in FIG.

The housing 20 has an operating end 59 of the biasing member 59.
A limiting engagement portion 21 is formed to which b engages,
As shown in FIG. 5, the relay member 52
The operating end 59b is limited so as not to be energized when it is rotated clockwise beyond 1.

As described above, when the biasing member 59 is unlocked by the actuator 10 and the relay member 52 is rotated counterclockwise from the neutral position in FIG.
2 is returned to the neutral position where the output member 55 can be locked and unlocked, and when the actuator 10 locks the relay member 52 and rotates clockwise from the neutral position shown in FIG. 1, the relay member 52 is biased. The relay member 52 is connected to the output member 55 and the deceleration mechanism 40 without
It is arranged so that it is stopped at a restraining position that remains interposed between.

Next, the operation of the first embodiment will be explained.

Figure 1 shows the unlocked state, and in this state,
When the door lock 1 is manually locked by operating the lock/unlock knob 4 inside the vehicle, the output terminal 5 is connected to the connecting rod 5.
6 is drawn, the output member 55 projects to the imaginary line position shown in FIG. Since the engagement protrusion 53a of the engagement end 53 of the relay member 52 moves relatively within the play s between the locking engagement end 58a and the unlocking engagement end 58b of the engagement groove 58, the output member 55 It can be easily moved both when it is locked and when it is unlocked.

When locking is performed by the operation of the actuator 10, when the electric motor 30 is started, the small gear 41,
The small tooth portion 43a and the large tooth portion 43b of the reduction gear 43 are decelerated, and the speed is further decelerated when being transmitted to the relay member 52, so that the relay member 52 rotates clockwise from the position shown in FIG.

When the relay member 52 rotates, the engagement end 53 also rotates, and the engagement protrusion 53a engages the engagement groove 58 of the output member 55.
Push the locking engagement end 58a to make the output end 56 protrude. As a result, the lock/unlock lever 1a is displaced and the door lock 1 is locked. When the relay member 52 rotates to enter the locked state, the operating end 59b of the biasing member 59 is locked by the limiting engagement portion 21 of the housing 20 and cannot follow the side end 52a of the relay member 52. As shown in FIG. 5, only the relay member 52 is in a rotating state, and when the electric motor 30 stops, the relay member 52 also stops.

After the electric motor 30 and the relay member 52 are stopped, the urging force of the urging member 59 does not work, so the relay member 52 does not return, and the actuator 10 maintains the state shown in FIG. 5.

Lock/unlock knob 4 when trying to unlock door lock 1
When operated, a force is applied that pushes the output end 56 and causes the output member 55 to retract. However, in order to retract the output member 55, the relay member 52 and deceleration mechanism 40 must be displaced, and the electric motor 30 must also be turned off. It must be rotated by external force, making it extremely difficult to unlock.

In order to unlock the door lock 1 from the state shown in FIG.
2 rotates counterclockwise, passes the play s, contacts the unlocking engagement end 58b of the engagement groove 58 of the output member 55, passes the neutral position shown in FIG. The output member 55 is retracted to displace the door lock 1 and the door lock 1 is unlocked.

When the lock is unlocked and the electric motor 30 is stopped, the operating end 59b of the biasing member 59 moves to the side end 52.
Press a to rotate the relay member 52 clockwise to return it to the neutral state shown in FIG. 1, and the actuator 10 completely stops. In this state, when manually locking and unlocking as described above, the output member 55 moves easily and manual operation is not hindered.

8 to 12 show a second embodiment of the present invention.

In this embodiment, the speed reduction mechanism 40a is a planetary gear mechanism, and the output relay mechanisms 50a are provided vertically and dispersedly.

As can be seen in FIGS. 8 and 12, the reduction mechanism 40a has a sun gear 44 fixed to the output shaft of the electric motor 30, and is arranged concentrically with the sun gear 44, and is firmly fitted and fixed to the housing 20. input internal gear 45 and output internal gear 46 that can freely rotate.
, and a planetary gear 48 which is plate-shaped as a component but is supported through a mechanical arm member 47 so as to be capable of planetary movement around the sun gear 44 . The planetary gear 48 has a first tooth portion 48 a that meshes with the sun gear 44 and the input internal gear 45 , and a second tooth portion 48 b that meshes with the output internal gear 46 .

As can be seen in FIGS. 8 and 10, the output relay mechanism 50a has an output shaft 61 loosely fitted into the output internal gear 46 above the actuator 10 in the figures.
A butterfly-shaped relay member 62 is fixed to the output shaft 61, and the engaging ends 63, 63 of the relay member 62 are fixed to the stopper 22 fixed to the housing 20 and the output internal gear 46. It is located between the engaging protrusion 46a and the engaging protrusion 46a.

The engaging ends 63, 63 are connected to the engaging protrusion of the output internal gear 46 through play s1 corresponding to the operating stroke of the door lock between the engaging protrusion 46a of the output internal gear 46 in the neutral position and the stopper 22. 46a
An output member 64 is fixed to the output shaft 61.

Furthermore, the output relay mechanism 50a is shown in FIG.
As can be seen in FIG. 0 and FIG. 11, an idling member 65 is disposed at the bottom of the actuator 10 in the figure so as to be rotatable around the output shaft of the electric motor 30, and an attachment that engages with the idling member 65 is provided. A force member 66 is provided.

The free rotation member 65 rotatably engages with the arm member 47 of the deceleration mechanism 40 via the engagement protrusion 65a,
The neutral position biased end 65b faces the neutral position protrusion 23 protruding from the housing 20.

The fixed end 66a of the biasing member 66 is located at the neutral position protrusion 2.
3, and the operating end 66b is engaged only with the housing 20.
The neutral position protrusion 23 and the biased end 6 of the free rotation member 65
5b.

Next, the operation of the second embodiment will be explained.

Considering a certain state when the actuator 10 is not operating, the output member 64 is in the solid line position in FIG. 9, and the relay member 62 and its engaging end 63 are in the position shown in FIG. The positions of the relay member 62, the engaging end 63, and the output member 64 correspond to the unlocking end of the locking/unlocking stroke of the door lock. The output internal gear 46 is in a neutral position where the engagement protrusion 46a faces the stopper 22 of the housing 20.

When the lock/unlock knob 4 is operated inside the vehicle, the output member 64 rotates clockwise in FIG. 9. The relay member 62 also rotates clockwise, and one engagement end 6
3 is the engagement protrusion 4 of the output internal gear 46 within the play s1.
6a, and the other engaging end 63
When it comes into contact with the stopper 22, it means that it has moved to the other end of the operating stroke. The movement of the engaging end 63 is not affected by the output internal gear 46 in either case of reciprocation, and regardless of the speed reduction mechanism 40.
The relay member 62 and the output member 64 rotate easily and can be manually locked and unlocked.

The operation of activating the output member 64 by the deceleration mechanism 40 to lock and unlock it is as follows.

When locking, when the electric motor 30 starts,
The output shaft rotates the sun gear 44, and while the rotation is transmitted from the first tooth 48a, second tooth 48b of the planetary gear 48 and the arm member 47 to the output internal gear 46, the output is greatly reduced. Gear 46 rotates at a relatively slow speed.

When the output internal gear 46 rotates clockwise, the engagement protrusion 46a pushes the engagement end 63 of the relay member 62, rotates the relay member 62 and the output member 64 clockwise while moving within the play s1, and outputs. The door lock 1 is locked by the member 64.

While the output member 64 is moved to the end of the locking stroke, the arm member 47 of the deceleration mechanism 40a also rotates.
The free rotation member 65 is also rotated via 5a. When the free rotating member 65 rotates, in this case in a clockwise direction, the biased end 65b is rotated by the operating end 6 of the biasing member 66.
Rotate away from 6b.

When the locking is completed and the electric motor 30 stops, the idling member 65 also stops there, and thereafter the biasing member 6
The biasing force No. 6 does not work and it stops as it is.

If you try to manually unlock the door lock 1 using the lock/unlock knob 4 in this state, it will be extremely difficult to unlock the door because the electric motor 30 and deceleration mechanism 40a must be moved via the output member 64 and the relay member 62. .

To unlock the door from this state, the electric motor 30 is started to rotate in the opposite direction. Then, contrary to the above, the free rotating member 65 rotates counterclockwise in FIG.
6b, the biased end 65b of the freely rotating member 65 moves while pushing the operating end 66b against the biasing force of the biasing member 66 while the fixed end 66a remains locked to the neutral position protrusion 23.

When the output member 64 moves the door lock to the end of its unlocking stroke, the electric motor 30 is de-energized. Engagement protrusion 46 of output internal gear 46
At this time, a remains in contact with the engaging end 63 of the relay member 62, and the biased end 65 of the free rotating member 65 is also in a state where it has rotated to the position shown by the imaginary line in FIG.

When the electric motor 30 is de-energized, the driving force is lost, so the biased end 65b of the free rotating member 65
The biasing member 66 is pushed by the operating end 66b and begins to move from the rotated state to return to the neutral position shown in FIG.

The return operation of the idler member 65 is input from the engagement protrusion 65a to the arm member 47 of the deceleration mechanism 40a, which operates the deceleration mechanism 40a and finally rotates the output internal gear 46 in the return direction.

When the biased end 65b of the free rotating member 65 returns to the original position shown in FIG. 11, the engagement protrusion 46a of the output internal gear 46 returns to the neutral position. Therefore, similarly to the above, since the engaging end 63 of the relay member 62 becomes movable within the play s1, the deceleration mechanism 40
It can be rotated easily regardless of a, and the door lock 1 can be manually locked and unlocked.

"Effects of the Invention" According to the actuator for locking/unlocking according to the present invention, when the actuator is operated to lock the lock, the relay member of the output relay mechanism remains connected to the rotary drive source and the speed reduction mechanism. This makes it extremely difficult to manually unlock the door, and the lock cannot be unlocked by a child or the like, improving safety and making it difficult to use burglar tools, improving theft prevention.

[Brief explanation of drawings]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a front view of the actuator with the lid removed when the relay member is in the neutral position, and FIG. 2 is a front view of the actuator with the lid removed.
The figure is also an exploded perspective view, Figure 3 is a sectional view taken along the line in Figure 1, Figure 4 is a sectional view taken along the line in Figure 1, and Figure 5 shows the relay member in the restrained position with the lid removed. FIG. 6 is a front view of the actuator, FIG. 6 is a perspective view of the automobile, FIG. 7 is a perspective view of the door seen from inside, FIGS. 8 to 12 show the second embodiment, and FIG.
The figure is a vertical sectional view of the actuator, FIG. 9 is a plan view, FIG. 10 is a sectional view taken along the line of FIG.
1 is a sectional view taken along the line of FIG. 8, and FIG. 12 is a sectional view taken along the line of FIG. 1...Door lock, 4...Lock/unlock knob, 10...
...Actuator, 20...Housing, 30...
...Electric motor, 40, 40a...Reduction mechanism, 5
0, 50a... Relay mechanism, 52, 62... Relay member, 55, 64... Output member, 59, 66... Biasing member.

Claims (1)

[Scope of Claim for Utility Model Registration] In a locking/unlocking actuator for a door lock that includes a rotary drive source and a speed reduction mechanism, the actuator is provided with an output relay mechanism, and the output relay mechanism is connected to the lock/unlock mechanism of the door lock. an output member connected to the output member through play corresponding to a locking/unlocking stroke, and a relay member connected to the output member through a play corresponding to a locking/unlocking stroke, and the relay member being in a neutral position where the output member can be locked/unlocked when unlocked by an actuator. The locking/unlocking operation is characterized in that the locking/unlocking operation is configured to include a biasing member that stops the relay member at a restraining position interposed between the output member and the deceleration mechanism when the relay member is returned to its original position and locked by an actuator. Actuator for.