JPH0223668B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a means for automatically tightening the wing of an automobile door, rear trunk lid, etc. to the frame when the wing is closed to the frame, which is the main body. It is something.

[Conventional technology]

Conventionally, using well-known means, for example, when closing a car door, the first step preliminary locking can be done with a light force, but the second step completely locking, It has come to require considerable force.

Therefore, it is impossible to completely close the door just by pressing, and the inertia of the heavy door has to be used.

As a result, a large impact noise is generated when the door is closed, and it is a fact that all drivers have experienced that this noise is particularly problematic at night.

In addition, in the case of a female driver, the driver may not have sufficient strength and the door may be left ajar, creating a dangerous driving situation.

The situation is exactly the same with the trunk lid of a car, such as driving with the trunk lid open,
The chances of encountering internal baggage theft incidents are increasing.

[Problem to be solved by the invention]

The device of the present invention has succeeded in obtaining a device that eliminates the above-mentioned drawbacks, and has the feature that the door can be completely closed automatically and silently by closing the door with a light force.

Furthermore, such a device can be used without changing conventional practice even in the unlikely event that the automatic mechanism fails.
It is not effective unless the door is closed (so that even a third party who does not know the operation can do it).

The device of the present invention has also succeeded in obtaining such a means.

Furthermore, using the key to open the door;
It shall be possible to manually open the door using the handle.

This method also has the characteristic that it can be done without changing conventional practices.

Furthermore, even if an accident occurs and a large impact is applied to the vehicle, the door will be locked in the ajar state, similar to the conventional mechanism, so there is no need to worry about safety.

Furthermore, in the case of automobiles, especially in the case of doors, the use of electrical contacts must be avoided as much as possible since the device is exposed to the elements.

According to the device of the present invention, if the electric motor is of a sealed type, everything else can be made of semiconductors, so that it can meet the above-mentioned requirements.

Furthermore, in some cases, equipment that is exposed to wind and rain is often subject to a sudden increase in the load on the motor due to an unavoidable accident such as icing, which often causes a burnout accident.

For this reason, it has become common sense to use large and expensive overload relays.

According to the device of the present invention, since this performance is inevitably added to the control circuit of the electric motor, there is a particular feature that there is no need to attach an overload relay.

[Means to solve the problem]

The present invention provides a cam groove that opens on the outer periphery so that when the wing is moved by an external force so as to close with respect to the frame that is the main body, the wing protrusion provided on the wing is fitted into the wing at the end of the movement. It further has first and second locking recesses on the outer periphery, is rotatably supported by a rotating shaft provided on a chassis fixed to the frame, and is returned by a spring for rotating the cam plate. a cam plate that is resiliently repelled in a direction in which the cam plate is rotated; a switch, an electric motor that rotates when the switch is closed, a reduction gear train rotated by the electric motor, and a reduction gear train that rotates coaxially with the cam plate and freely rotates independently of the rotation of the cam plate. a final stage gear that is supported to be moved and rotated by the reduction gear train, and that rotates the cam plate by pressing a locking part of the cam plate with a protruding final gear locking part; When the manual movement of the wing is completed, the wing is fitted into the first lock recess provided on the outer periphery of the cam plate under the force of a lock lever spring, and the cam plate is placed in a semi-locked state. It has a locking pin at one end, and then the electric motor rotates, the reduction gear train and the final gear are rotated, and the final gear locking part presses the locking part of the cam plate. As a result, the cam plate is rotated, the wing protrusion fitted into the cam groove is rotated, and the wing is tightened against the frame, and when the tightening is completed, the cam plate is rotated. The locking pin is inserted into the second locking recess provided on the outer periphery of the chassis by being biased by the locking lever spring to lock the cam plate, and the chain is rotatably provided on the chassis. When the switch is closed with the lock lever and the cam plate in a half-locked state, the electric motor is energized for a predetermined period of time to start, and after the start, a decrease in the energizing current is detected, and the electric motor is activated based on the detection output. The overload current generated immediately after the locking pin at one end of the locking lever is inserted into the second locking recess and the cam plate is locked. an energization control circuit that makes the transistor non-conductive and stops energizing the motor; and an energization control circuit that reverses the final stage gear, reduction gear train, and motor to return to the starting point when the motor stops. and a return means for rotating the locking lever by an external force against the elastic force of the locking lever spring to move the locking pin at one end of the locking lever to the first or second chain. spaced apart from the lock recess, the cam plate is rotatable;
A release device for returning the cam plate to a starting point by a spring for rotating the cam plate; and a locking means provided on the chassis for locking the cam plate and the final stage gear that have returned to the starting point. This is a wing tightening device using an electric motor.

[Embodiment] The details of the apparatus of the present invention having the above-mentioned features will be explained with reference to the embodiment shown in FIG.

In Fig. 1, the output shaft of the electric motor 1 has a gear 2.
A is fixedly provided and meshes with the reduction gear 2B. The drive gear 2C is provided coaxially and integrally with the reduction gear 2B, and meshes with the final stage gear 2D.

The reduction gear 2B, the rotating shaft 3 of the drive gear 2C, and the electric motor 1 are provided on a chassis 4 of a frame, which is the main body.

The final stage gear 2D shares a rotating shaft 7 with a cam plate 6 that tightens a wing protrusion 5 provided on a wing of a door (not shown), and is supported so as to be able to rotate independently of each other.

The gear portion of the final stage gear 2D is provided over an angle that is equal to or more than the rotation angle required for tightening the wing protruding portion 5 of the cam plate 6 (in the figure, the gear portion of the final stage gear 2D is (Although it is provided over approximately half the circumference, it may be provided over the entire circumference.) Furthermore, the final gear locking portion 8 provided on the final gear 2D is in contact with the locking portion 9 provided on the cam plate 6. There is.

The cam plate 6 has a cam groove 10 that engages with the locking portion 9 and the wing protrusion 5 and serves as a wing engagement portion that is a recessed portion for locking and tightening.
The second lock recess 11A, which is a recess provided on the outer periphery for engaging the lock pin 12, the first lock recess 11B, and the electric contact switch 19 provided on the chassis 4 are connected. A switch actuating pin 20 is provided.

For example, it may be made of relatively hard metal so as to generate a locking sound that can be heard by the operator when the second locking recess 11A and the locking pin 12 are engaged.

A cam plate rotation spring 13 is hung between the locking portion 9 provided on the cam plate 6 and the chassis 4 to rotate the cam plate 6 back.
It is repelled in the direction.

The locking pin 12 is installed at one end of the left side of the locking lever 15 which is pivotally supported by a support shaft 14 installed in the chassis 4, and furthermore, there is a locking pin 12 between the right end of the locking lever 15 and the chassis 4. A locking lever spring 16 is applied to resiliently repel the locking lever 15 in the direction of arrow B, thereby forming a locking mechanism.

Further, the right end of the locking lever 15 resists the elastic force of the locking lever spring 16, and the right end of the locking lever 15
It is mechanically connected to a release device 17 for rotating the lock pin 12 in the direction of arrow B' to release the engagement between the lock pin 12 and the second lock recess 11A.

Reference numeral 18 denotes a gear stopper provided on the chassis 4, which stops the rotation of the final gear 2D by coming into contact with the final gear locking portion 8 fixed to the final gear 2D.

A back spring 22 is hooked between the final stage gear locking portion 8 and the chassis of the main body to elastically repel the final stage gear 2D in the direction of arrow A.

A cam plate rotation spring 13 that rotates the cam plate 6 in the direction of arrow A is hung between the locking portion 9 of the cam plate 6 and the chassis, but the final gear lock of the final gear 2D is When the locking part 9 comes into contact with the part 8, the position shown in the figure is achieved.

Further, the cam plate 6 is attached to the locking portion 9 in a counterclockwise direction by the driving force of the electric motor 1 via the reduction gear trains 2A, 2C, and 2D, against the elastic force of the cam plate rotation spring 13. When rotated, the locking pin 12
A locking pin locking portion 21 is provided that engages with and locks the cam plate 6 to prevent it from rotating too much.

In FIG. 1, the wing protruding portion 5 and the cam groove 10 serving as the wing engaging portion are separated, and the cam plate 6 is attached to the stopper 18 via the final gear locking portion 8 due to the elastic force of the back springs 13 and 22. The figure shows the locking portion 9 being locked.

When the wing protrusion 5 is moved in the direction of arrow C by manual movement in order to close the wing of a door or the like (not shown) to the frame that is the main body, the wing protrusion 5 is moved to the cam groove 10 which becomes the wing engagement part. engage with.

The cam groove 10 contacts the wing protrusion 5 with a wing abutting part 101 that contacts the wing protrusion 5 and rotates the cam plate 6 in the direction of arrow A' by the force of the wing protrusion 5 in the direction of arrow C. It has a wing abutting portion 102 that abuts so as to encompass the wing protrusion 5 when the cam plate 6 is rotated while being abutted.

When the wing protrusion 5 is engaged with the cam groove 10 and further moved in the direction of arrow C, the wing protrusion 5 and the wing contact portion 101 are brought into contact with each other, and the cam plate 6
is rotated independently of the final stage gear 2D in the direction of arrow A' against the elastic force of the cam plate rotation spring 13.

Rotation of the cam plate 6 in the direction of arrow A' causes the switch actuator 20 to close the first locking recess 11 shown in FIG.
B and the locking pin 12 are rotated to a position where they engage with each other.

When the electric contact switch 19 is brought into contact, the electric motor 1 is energized, and the electric motor gear 2A, reduction gear 2B, and drive gear are rotated to rotate the final stage gear 2D in the direction of arrow A' so as to drive the cam plate 6. 2C
Rotate.

Therefore, the pressing force in the direction of arrow C by the wing protrusion 5 of the wing abutment part 101 is small, and the rotation of the cam plate 6 in the direction of arrow A' is insufficient, causing the lock to be locked in the first locking recess 11B. Even when the lock pin 12 is engaged, the locking portion 9 of the cam plate 6 and the final gear locking portion 8 cause the cam plate 6 to move in the direction of arrow A'.
It is pressed and rotated by the final stage gear 2D.

When the cam plate 6 rotates to the set position and tightens the wing protrusion 5 via the wing contact portion 102, the locking pin 12 is inserted into the second locking recess 11A as shown in FIG. Pressed into engagement.

In this state, the locking pin 12 elastically engages with the locking recess 11A through the rotational force of the locking lever 15 due to the elastic force of the locking lever spring 16,
This prevents the cam plate 6 from returning to rotation due to the elastic force of the cam plate rotation spring 13.

The final stage gear 2D is further rotated by the driving force of the electric motor 1 from the state shown in FIG.
When trying to push away the locking pin 12 engaged with the locking recess 11A of the cam plate 6, the rotation of the cam plate 6 is caused by the locking pin 12 and the locking pin locking part 21 provided on the cam plate 6. mechanically stopped through contact with the

Here, energization of the electric motor 1 is stopped upon detecting an overload. (For the electrical circuit of motor 1, see
This will be explained later in the figure. ) When the driving force of electric motor 1 is lost,
The driving gear 2C, the reduction gear 2B, the gear 2A, and the electric motor 1 spring back due to the elastic force of the back spring 22 for the final gear 2D, which is elastically rebounding in the direction of arrow A'.

Therefore, as shown in FIG. 4, the final stage gear 2D is rotated until the final stage gear locking portion 8 provided on the final stage gear 2D comes into contact with the stopper 18, and is put on standby in preparation for the next operation.

Through the above operations, the tightening operation of the wing protrusion 5 by the electric motor 1 is completed.

Next, when releasing the tightening of the wing protrusion 5, the release device 17 is activated against the elastic force of the lock lever spring 16, and the lock lever 15 is activated.
Rotate in the direction of arrow B'.

Then, the engagement between the second lock recess 11A provided in the cam plate 6 and the lock pin 12 is released, and the cam plate 6 is moved as shown in FIG. 1 by the elastic force of the cam plate rotation spring 13. will be restored to its original state.

The release device 17 is a device that rotates the lock lever 15 in the direction of arrow B' by means known in the art used in automobiles, for example, by a mechanical action of manually triggering a door handle.

The locking pin 12 in FIG. 2 is located in the first locking recess 11B.
The state in which the door is engaged is the half-locked state with the door ajar.
As described above, at this time, the electric motor 1 begins to rotate, so the door is automatically tightened.

Next, the control circuit of the electric motor 1 will be explained with reference to FIG.

In Figure 5, one end of the input terminal of motor 1 is connected to the negative side of the power supply, and the other end is connected to resistor 5.
3 and the base of transistor 54.

The emitter of the transistor 55 is connected to the positive side of the power supply, and the collector is connected to the resistor 53. The emitter of the transistor 54 is connected to the resistor 51,
52 connections.

As can be seen from the above explanation, the resistors 51, 5
2, 53 and the electric motor 1 constitute a bridge circuit.

Even when the power is turned on, the base of the transistor 55 has no input and remains non-conductive because the electrical contact switch 19 is open.

At this time, the resistors 51, 52, 53 and the armature resistance of the motor 1 are set so that the bridge circuit described above is in a substantially balanced state.

Therefore, there is no base voltage of transistor 54 and it is kept non-conductive.

As explained with reference to FIG. 1, when the wing protrusion 5 enters the opening of the cam groove 10 of the cam plate 6, the electrical contact switch 19 closes, so that the charging current of the capacitor 50 charges the capacitor 50 for a set period of time. 55 becomes conductive.

Therefore, the electric motor 1 starts rotating. At this time, a back electromotive force is generated in the motor 1, so the armature current decreases, and the voltage drop across the resistor 53 decreases.
A base current of transistor 54 is obtained, transistors 54 and 55 are kept conductive, and motor 1 continues to rotate even after charging of capacitor 50 is completed.

Therefore, since the final stage gear 2D in FIG.
contact, and rotation of the final stage gear 2D is prevented.

Therefore, the armature current increases and the base voltage of the transistor 54 drops and becomes non-conductive, so that the transistor 55 also becomes non-conductive and the motor 1
The power will be automatically cut off due to overload.

The resistor 56 is used to discharge the capacitor 50 and prepare for the next operation.

As can be seen from the above description, the energization control circuit employed in the electric motor 1 of the apparatus of the present invention is started by closing the electrical contact switch 19, and energization is automatically stopped due to overload.

〔Effect of the invention〕

As described with reference to the embodiments, the device of the present invention has the following effects.

By pressing the wing against the frame, which is the main body, with a light force, the wing can be tightened with a large force using an electric motor.

It is also possible to manually release the tightened wings. After the wing tightening is completed, the final stage gear 2D shown in FIG. 1 springs back together with the electric motor 1, so even if the electric motor 1 breaks down, the wing can be manually tightened by operating only the cam plate 6. Can be done.

For example, when used to open and close car doors and rear trunk lids, it not only eliminates the need to force the doors and lids to close at a high pitch;
Even people with weak strength, such as elderly people, women, and children, can close doors and lids with light force, and
There is no need to worry about the door being left ajar.

Further, this mechanism has the feature that it can close the door with force as in the conventional case, and when opening the door, it can operate in the same way as the conventional mechanism because it is separated from the mechanism of the electric motor 1.

Therefore, even if there is a failure in the electric circuit, normal operation can be performed without any problem, and there is no need to change conventional practices when opening the door or trunk, making it easy to use.

[Brief explanation of drawings]

FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are operation explanatory diagrams of an embodiment of the present invention, and FIG. 5 is a circuit diagram for controlling current supply to the electric motor. DESCRIPTION OF SYMBOLS 1... Electric motor, 2A... Gear of electric motor, 2B... Reduction gear, 2C... Driving gear, 2D... Final stage gear, 5... Wing protrusion, 6... Cam plate, 8... Final stage gear locking part, 9... Locking Part, 10...Cam groove, 101, 102
...Wing contact portion, 11A...Second locking recess, 1
1B...first locking recess, 12...locking pin, 13...
Cam plate rotation spring, 15...Lock lever, 1
6...Lock lever spring, 17...Release device, 1
8...Stopper, 19...Electric contact switch, 22
...back spring of final stage gear, 54, 55...transistor.

Claims (1)

[Scope of Claims] 1. An opening is provided on the outer periphery so that when the wing is moved by an external force so as to close with respect to the frame that is the main body, the wing protrusion provided on the wing is fitted in at the end of the movement. It has a cam groove that
Furthermore, the cam plate has first and second locking recesses on the outer periphery, is rotatably supported by a rotating shaft provided on a chassis fixed to the frame, and is resiliently moved in the return direction by a spring for rotating the cam plate. a cam plate that is repelled; a switch that is provided on the chassis and that is closed by a pin provided on the cam plate when the wing protrusion fits into the cam groove and the cam plate rotates; an electric motor that rotates when the switch is closed; a reduction gear train that is rotated by the electric motor; and a reduction gear train that is rotated coaxially with the cam plate and freely rotated independently of the rotation of the cam plate. a final gear which is supported by the reduction gear train and rotates the cam plate by pressing a locking part of the cam plate with a protruding final gear locking part; and the wing; At the end of the manual movement of the cam plate, a locking pin is inserted into the first locking recess provided on the outer periphery of the cam plate and is biased by a locking lever spring to place the cam plate in a semi-locked state. Next, the electric motor rotates, the reduction gear train and the final gear are rotated, and the final gear locking part presses the locking part of the cam plate. When the cam plate is rotated, the wing protrusion fitted into the cam groove is rotated and the wing is tightened against the frame, and when the tightening is completed, a a locking lever rotatably provided on the chassis, into which the locking pin is fitted into the second locking concave portion biased by the locking lever spring to lock the cam plate; When the switch is closed with the cam plate in a half-locked state, the electric motor is energized for a predetermined period of time to start, and after the start, a decrease in the energizing current is detected and connected in series to the electric motor based on the detection output. The locking pin at one end of the locking lever is fitted into the second locking recess, and the overload current generated immediately after the cam plate is locked causes the transistor to continue rotating. an energization control circuit that makes the motor non-conductive and stops energizing the motor; and a return circuit that energizes the final stage gear, reduction gear train, and motor to reverse and return to the starting point when the motor stops. a means for rotating the locking lever by an external force against the elastic force of the locking lever spring to move the locking pin at one end of the locking lever from the first or second locking recess; spaced apart to allow free rotation of the cam plate,
A release device for returning the cam plate to a starting point by a spring for rotating the cam plate; and a locking means provided on the chassis for locking the cam plate and the final gear after returning to the starting point. A wing tightening device using an electric motor.