JPH0324773Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a locking device for a back door of an automobile.

``Prior Art'' Locking devices for automobile backdoors are well known and have various configurations, but most of them have a double lock structure.

That is, the first lock is released to unlock the cylinder lock attached to the back door, and the second lock is released to unlock the cylinder lock and push it forward.
By releasing the lock, the door closing mechanism is unlocked.

By the way, since the cylinder lock mentioned above is unlocked using the engine start key, the engine must be stopped when locking and unlocking the back door.

However, it is inconvenient to stop the engine every time the back door is opened, so various locking devices have been developed that can lock the back door without using a key after it has been unlocked.

13 to 15 show conventional examples of this type of locking device. Reference numeral 1 denotes a device body fixed to the outer panel of the back door, on which a push button 2 consisting of a cylinder lock can be moved forward and backward. A rotary lever 4 is fixed to the tip of the cylinder shaft 3. This rotating lever 4 is provided with an arm portion 4a, and the swinging lever 5 is provided with an arm portion 4a.
It is pushed around by a.

The rotary lever 4 rotates between the position shown by the phantom line and the position shown by the solid line in FIG. 15, and each position is maintained by the action of the action spring 6.

In the above lock device, when the key is inserted into the cylinder lock and rotated, the rotary lever 4 moves to the 15th position.
Rotate from the phantom line position to the solid line position on the diagram, and arm 4
a now faces the swing lever 5, and in this state, when the push button 2 is pressed, the 14th
As shown in the figure, the swinging lever 5 is pushed around by the arm 4a, thereby unlocking the door closing mechanism which is interlocked via the rod 7 provided on the swinging lever 5.

When the pushing force on the push button 2 is released, the rotating lever 4 and the swinging lever 5 move to the thirteenth position.
It automatically returns to the operating position shown in the figure, and by pressing the push button 2, the door closing mechanism can be unlocked at any time.

On the other hand, if you want to lock the lock without using the key in the above operating state, operate the lock button provided inside the car and move the rotary lever 4 to the 15th position.
Rotate it to the position shown on the diagram. In this operating state, the arm portion 4a is displaced from the position facing the swing lever 5, so even if the push button 2 is pressed, the swing lever 5 does not rotate, and the door closing mechanism remains locked. .

In addition, use the key inserted into the cylinder lock to rotate the rotating lever 4 to the position shown in the phantom line in Fig. 15.
It can be moved to the locked state.

Next, FIG. 16 is a simplified diagram showing the above-mentioned door closing mechanism. As is well known, this door closing mechanism is composed of a claw lever 9 and a door latch 10 provided on the back door 8, and a striker 12 fixed to the vehicle body 11. The claw lever 9 rotates slightly to release the door latch 10 and allow the door to open.

``Problems to be Solved by the Invention'' The above-mentioned locking device requires a large number of assembly steps during installation, which is not necessarily desirable.

That is, since the rotating lever 4, the action spring 6, etc. are provided outside the device main body 1, and are configured to protrude from the cylindrical periphery of the device main body 1, it is possible to install these components while they are assembled. This makes it difficult to insert it through the mounting hole of the back door.

For this reason, after the device main body 1 is inserted into the mounting hole and fixed, each member such as the rotating lever 4 and the action spring 6 must be assembled, which increases the number of assembly steps.

The above-mentioned drawbacks can be solved by increasing the diameter of the mounting hole of the backdoor, but since it is preferable to make the diameter of the mounting hole as small as possible from the viewpoint of waterproofing measures, etc., there is a problem with such a configuration. In addition, when packaging the above-mentioned locking device, the protruding part may get caught on the opening of the packaging box, causing deformation of the assembled parts or misalignment of the assembly position, which makes packaging and transportation work difficult. But it was inconvenient. Although the above-mentioned conventional example has been described as having a configuration that can be locked from inside the vehicle, the above-mentioned problems also apply to this type of locking device that can be locked or unlocked only from outside the back door.

``Means for solving the problem'' This invention aims to solve the above-mentioned problems.The cylinder lock is unlocked and the door is closed by pushing the cylinder lock forward. A locking device for a back door for an automobile having a structure in which the mechanism is unlocked includes a cylinder lock provided on the main body of the device so as to be able to move forward and backward; an interlocking member provided in the device main body so as to be pushed by the user and having a stopper surface around the periphery; and an interlocking member fixed in the device main body so as to slidably penetrate the interlocking member and support the interlocking member. When the interlocking member rotates as the cylinder lock is unlocked and the interlocking member moves forward in conjunction with the forward movement of the cylinder lock, the stopper surface The interlocking member is inserted through a hole provided in the support plate through which the interlocking member passes, and within the device main body inside the support plate so that it slides with respect to the interlocking member and rotates integrally with the interlocking member. a spring receiving plate, a spring member provided between the spring receiving plate and the interlocking member that moves the cylinder lock and the interlocking member backward, and an action spring provided between the spring receiving plate and the support plate; The present invention proposes a locking device comprising a pushing member that unlocks the door closing mechanism in conjunction with the advancing movement of the interlocking member.

"Example" Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view of the locking device according to the present invention;
FIG. 2 is a front view of the locking device, and FIG. 3 is a rear view of the locking device.

In these figures, reference numeral 20 denotes a cylindrical device main body, with a handle portion 20a integrally formed at the front portion and a supporting arm 20b of a swing lever, which will be described later, at the rear portion.

21 is a rotor, 22 is a cylinder outer, and these constitute a well-known cylinder lock, and around this cylinder lock is a holder 2.
It is surrounded by 3.

This cylinder lock has a key protrusion,
This slides in a key recess formed in the device main body 20, so that the cylinder lock moves in the lateral direction in FIG. 1.

Further, as shown in detail in FIG. 4, this cylinder lock includes a convex portion 21a provided on the head portion of the rotor 21, and a concave groove in the cylinder outer 22 that defines the rotation range of the convex portion 21a. 22a allows the lock 21 to rotate within the range L and R in FIG. That is, if the key is rotated within the range L from the insertion position, the lock is released, and when the key is rotated within the range R, the lock is activated.

Further, the cylinder lock is provided with a spring 24 for return rotation of the rotor 21, so that the rotor 21 returns to the key insertion position when not operated. As shown in FIG. 5, the spring 24 described above has both bent ends commonly engaged with the rotor 21 and the cylinder outer 22. Therefore, when the rotor 21 rotates, one of the spring ends is rotated B as shown in FIG. 6, and a return rotational force is thereby applied to the rotor 21.

Connecting protrusion 2 protruding from the tip of the rotor 21
1b projects into a connecting groove 25a of a push shaft 25 as an interlocking member to connect the rotor 21 and the push shaft 25.

As can be seen from FIGS. 5, 6, and 9, the connecting protrusion 21b is composed of a large diameter semicircular portion 21c and a small diameter semicircular portion 21d, and the area of the small diameter semicircular portion 21d is An interlocking portion 25b protruding inward from the interlocking groove 25a is located inside.

By configuring the connecting portion as described above, the push shaft 25 can be rotated in conjunction with the rotation of the rotor 21 in the same direction after a predetermined left rotation or right rotation.

As can be seen from the exploded view of FIG. 7, the push shaft 25 has a flange 25c at one end and a convex strip 25d integrally formed around the circumference along the longitudinal direction.
Equipped with 25e. And these convex stripes 2
5d and 25e have stepped portions 25 forming stopper surfaces.
By forming f and 25g, the front portion becomes a narrow convex strip.

The push shaft 25 is movable in the device main body 20 (the first
(horizontal direction in the figure).

Further, the support plate 26 has holes 26b and 26c through which the protrusions 25d and 25e of the push shaft 25 are passed.
are formed in series with the through hole 26a, and the convex strips 25d and 25e connect to these hole portions 26b and 26c.
When the push shaft 25 is correctly opposed, the push shaft 25 can be moved to the left (leftward movement in FIG. 1).

The support plate 26 described above has the shape of a circular plate with one side cut out, but it may also be formed into a substantially rectangular shape by cutting out both side parts, or it may be formed into a substantially rectangular shape by cutting out both sides. It is also possible to provide a notch along the spring plate and allow the upright piece of the spring receiving plate, which will be described later, to protrude from the notch.

A spring receiving plate 27 provided inside the support plate 26 receives the spring 28, and includes the through hole 26a of the support plate 26 and the hole 6.
A shaft hole 27a having the same shape as b and 26c is provided,
By slidably inserting the push shaft 25 into the shaft hole 27a, the spring receiving plate 27 rotates integrally with the push shaft 25.

Further, the spring receiving plate 27 is integrally formed with an upright piece 27b. An action spring 28 is suspended between this upright piece 27b and an upright piece 26d integrally formed on the support plate 26, and the spring receiving plate 2
The rotation of 7 has become sensitive.

The action spring 28 is located within the span of the device main body 20 and is oriented substantially perpendicular to the axial direction of the push shaft 25.

A pressure expanding spring 29 is provided between the spring receiving plate 27 and the collar 25c of the push shaft 25.
is a spring member that constantly applies a backward moving force to the push shaft 25 and the cylinder lock.

A lever 31 fixed to the tip of the push shaft 25 with an E-ring 30 is a lock control lever that can be locked without using a key. By rotating the lever 31, the push shaft 25 can be rotated.

The lock control lever 31 can be pivoted by being connected to a lock button provided inside the vehicle or an electric drive means using a solenoid or the like.

The substantially dogleg-shaped turning lever 32, which is rotatably pivoted on the support arm 20b of the device main body 20, is a pushing member whose one piece is pushed around by the tip of the push shaft 25 and turns. 33
This is to release the lock of the door closing mechanism connected through the door.

Next, the operation of the above locking device will be explained.

Figures 1 to 3 show the operating state of the lock, and the cylinder lock cannot be pushed in this state.

That is, the protruding portion 25 of the push shaft 25
The correspondence relationship between d and 25e and the holes 26b and 26c of the support plate 26 is as shown in FIG.
Even if a pushing force is applied to the push shaft 25, the stepped portions 25f and 25g abut against the support plate 26, so the shaft 25 does not move recessed.
Therefore, the push shaft 25 does not move beyond the position shown in FIG. 1, so that the locked state is maintained.

When the key is inserted into the cylinder lock and turned to the left, the first lock is released by opening the lock, and in the second half of this left turn, the large diameter semicircular portion 21c formed on the connecting protrusion 21b of the rotor 21 is opened. The end wall abuts against the interlocking portion 25b of the push shaft 25, and in response to the subsequent counterclockwise rotation, the push shaft 25 interlocks and rotates in the clockwise direction in FIG. 3.

When the rotor 21 has rotated counterclockwise over the range L in FIG. 2, the protrusions 25d and 25e of the push shaft 25 are properly inserted into the holes 26b and 26c of the support plate 26, as shown in FIG. opposite.

Furthermore, when the rotational force of the key is released in the above operation stage, the rotor 21 automatically rotates back to the key insertion position, but the action spring 28 acts on the spring receiving plate 27. For this reason, the push shaft 25 maintains the interlockingly rotated position shown in FIG. 11, and the second lock is released.

Under the above operation, the cylinder lock can be retracted and moved regardless of whether the key is inserted or pulled out.
e passes through the holes 26b and 26c of the support plate 26. FIG. 12 shows the above operation process in which the cylinder lock is retracted. As can be seen from this figure, the pivot lever 32 is pushed around by the advance of the push shaft 25.

When the pushing operation force on the cylinder lock is released, the push shaft 25 and the cylinder lock are automatically moved backward to the state shown in FIG. 1 under the pressure expanding action of the spring 29.

When the cylinder lock is moved backward in this manner, the push shaft 25 moves forward simply by pushing the cylinder lock again, so the door closing mechanism can be unlocked without using a key.

On the other hand, to lock the lock, insert the key into the cylinder lock and turn it clockwise. That is, when the rotor 21 is rotated in the range R in FIG. 2, the push shaft 25 is rotated counterclockwise in FIG. 3 in conjunction with rotation in the same direction after a predetermined clockwise rotation. , the protrusions 25d and 25e have the positional relationship shown in FIG. 10 with respect to the holes 26b and 26c of the support plate 26, and are in a locked state.

When the right rotation operating force on the key is released in this locked state, the push shaft 25 maintains the position shown in FIG. 10, and the rotor 21 rotates back to the key insertion position, allowing the key to be pulled out from the cylinder lock.

If you want to lock the lock without using the key, operate the lock button provided inside the car or operate the electric drive means under the switch operation to move the lock control lever 31 in the counterclockwise direction in FIG. 11. Rotate it. This causes the push shaft 25 to rotate, resulting in the locked state shown in FIG. 10. The above is one embodiment of the present invention, and it can be implemented by other methods.

For example, in the above embodiment, the pivot lever 32 is pivotally attached to the device main body 20;
Alternatively, a support arm may be provided on the inner panel of the back door and the support arm may be pivoted to this.Also, when implementing the present invention, the lock control lever 3 of the above embodiment is not necessarily configured to be lockable from inside the vehicle.
1 may be provided as necessary.

Further, in the above embodiment, the cylinder rotor is configured to automatically rotate back to the key insertion position, but the cylinder lock is configured such that the key can be pulled out at each rotor rotation position for locking and unlocking. Then, there is no need to rotate the key back as described above.

"Effects of the Invention" As mentioned above, according to the lock device according to the present invention, each member such as the action spring and the spring member for return movement of the cylinder lock can be mounted inside the device main body without increasing the external size of the device main body. Since it can be assembled into the back door, it is easy to attach it to the back door, and the diameter of the attachment hole provided in the door can also be reduced.

Furthermore, since each member does not protrude around the main body of the device, there is no problem such as deformation of assembled parts during packaging and transportation operations.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a lock device showing an embodiment of the present invention, Fig. 2 is a front view of the lock device, Fig. 3 is a rear view of the lock device, and Fig. 4 is a cylinder lock. Fig. 5 is a rear view of the cylinder lock; Fig. 6 is a rear view of a cylinder lock similar to Fig. 5 showing the operating state; Fig. 7 is an exploded perspective view of the main parts. , FIG. 8 is a front view of the push shaft, FIG. 9 is a simplified diagram showing the connection between the rotor and the push shaft, and FIGS. 10 and 11.
12 is a partially cutaway side view of the lock device showing the operating state; FIG. 13 is a side view of the conventional lock device; FIG. The figure is a partially cutaway side view of the locking device showing its operating state, FIG. 15 is a rear view of the locking device, and FIG. 16 is a simplified diagram showing the closing mechanism of the back door. 21... Rotor, 22... Cylinder outer,
25... push shaft, 25d, 25e...
Convex portion, 25f, 25g...stepped portion, 26...support plate, 26a...through hole, 26b, 26c...hole, 27...spring receiving plate, 28...action spring, 31... Lock control lever, 32...swivel lever.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a locking device for a back door for an automobile, the door closing mechanism is unlocked by unlocking a cylinder lock and pushing the cylinder lock forward; A cylinder lock is provided in the main body of the device so as to be able to move forward and backward, and a stopper is provided around the device body so as to rotate in conjunction with the rotor of the cylinder lock and to be pushed by the forward movement of the cylinder lock. an interlocking member having a surface, a support plate fixed in the main body of the device so as to slidably insert the interlocking member and support the interlocking member; rotates, and when this interlocking member moves forward in conjunction with the forward pushing of the cylinder lock, the hole provided in the support plate through which the stopper surface passes, and the inner hole of the support plate. a spring receiving plate into which the interlocking member is inserted so as to slide relative to the interlocking member within the device body and rotate integrally; and a spring receiving plate through which the cylinder lock and the interlocking member are moved backward. and an interlocking member, an action spring provided between the spring receiving plate and the support plate, and locking of the door closing mechanism in conjunction with the advancing movement of the interlocking member. A locking device consisting of a pushing member that releases the lock. (2) The above-mentioned cylinder lock has a rotor that can be turned left and right by a predetermined rotation angle from the key insertion position, and has a turning force that always returns to the key insertion position when not operated. Equipped with
A stopper surface provided on the interlocking member passes through the hole of the support plate under the rotation of the interlocking member that is interlocked with the leftward rotation of the rotor, and faces the hole, and is interlocked with the rightward rotation of the rotor. A locking device according to claim (1) of the utility model registration, which is configured to shift from a position facing the hole when the interlocking member rotates, thereby preventing the interlocking member and the cylinder lock from advancing. (3) The rotor and the interlocking member are connected so that the interlocking member is interlocked after the rotor rotates leftward and rightward by a predetermined amount or more, and the rotation of the interlocking member causes the stopper surface to move through the hole in the support plate. Facing the department,
Further, the locking device according to claim 1 or 2 of the utility model registration is adapted to be shifted from the facing position.