JPH0324774Y2 - - 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.
The door closing mechanism is unlocked by releasing the lock.

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.

Figures 18 to 20 show conventional examples of this type of locking device, in which 1 is 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. 20, and each position is maintained by the action of the action spring 6.

A sprig 7 and a support plate 8 are housed in the device body 1, and a ring-shaped groove 1 is formed on the inner peripheral surface of the device body 1.
A C-shaped retaining groove 9 is fitted into the groove 1a to hold the support plate 8, and the spring 7 urges the cylinder lock toward the key insertion slot.

In the above locking device, when the key is inserted into the cylinder lock and rotated, the rotary lever 4 moves to the 20th position.
Rotate from the phantom line position to the solid line position on the diagram, and
a now faces the swing lever 5, and in this state, when the push button 2 is pressed, the 19th
As shown in the figure, the swinging lever 5 is pushed around by the arm 4a, and from this, the swinging lever 5 pivots around the support shaft and is interlocked via the rod 10 provided thereon. The door closing mechanism is unlocked.

When the pushing force on the push button 2 is released, the rotating lever 4 and the swinging lever 5 move to the 18th position.
It automatically returns to the operating position shown in the figure by the action of the return spring, and by pushing the push button 2, the door closing mechanism can be unlocked at any time.

On the other hand, in the case of locking without using the key in the above operating state, a lock button provided inside the vehicle or the like is operated to rotate the rotary lever 4 to the position shown in the phantom line in FIG. 20. 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. 20.
It can be moved to the locked state.

Next, FIG. 21 is a simplified diagram showing the above-mentioned door closing mechanism. As is well known, such a door closing mechanism uses a claw lever 1 provided on the back door 11.
2, a door latch 13, and a striker 15 fixed to the vehicle body 14. When the swing lever 5 pivots, the claw lever 12 rotates slightly to lock the door latch 13. It's starting to loosen and allow the door to open.

``Problems to be solved by the invention'' The locking device as described above houses a spring 7 and a support plate 8 in the device body 1, and a C-shaped retaining ring 9 is fitted into a ring-shaped groove 1a. However, since it is very difficult to form the ring-shaped groove 1a with a mold, it is necessary to hold the ring-shaped groove 1a by post-processing after forming the device body 1 with a mold. Furthermore, when fitting the C-shaped retaining ring 9 into the groove 1a, it is necessary to assemble the support plate 8 while holding it with a jig or the like.
The ease of assembly was extremely poor, and the overall cost was high. Furthermore, the number of assembly steps required during installation is not necessarily desirable.

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

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 drawbacks can be solved by increasing the diameter of the attachment hole of the back door, but since it is preferable to make the diameter of the attachment hole as small as possible from the viewpoint of strength and waterproofing, 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 Problems'' This invention aims to solve the above-mentioned problems.The cylinder lock rotates as the cylinder lock is unlocked, and the cylinder lock is held in place by the return spring. A locking device for a back door for an automobile is provided with an interlocking member that is pushed forward and advanced against the expanding force, and the door closing mechanism is unlocked under the advancing movement of the interlocking member, wherein the interlocking member is A supporting member is provided, which has a through hole that is slidably passed through the interlocking member, and a hole that locks or releases the stopper surface provided on the interlocking member depending on the rotational position of the interlocking member. Two or more protrusions are formed around the support member, while the device body has a fitting consisting of an inner surface concave portion communicating with the tip opening and a hooked hole or hooked groove communicated with this concave portion. a portion corresponding to each protruding portion of the support member,
The protruding part of the supporting member is fitted into the inner concave part against the expanding force of the return spring built into the apparatus main body, and then sent into the fitting part, and the supporting member is inserted into the apparatus main body. We propose a locking device that is characterized by being fixed to the

According to the above-described present invention, it is sufficient to simply insert the protruding portion of the support member into the inner concave portion against the expanding force of the return spring, and then feed it into the fitting portion, resulting in good assembly performance. In addition, since each member such as the support member that locks or releases the stopper portion of the interlocking member, the return spring, and the action spring is assembled within the device main body, there are no members that protrude from the device main body. The drawbacks of the conventional example described above can be fully solved.

"Embodiment" Next, embodiments 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, the rotor 21 is configured 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 routed 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 8, the connecting protrusion 21b consists 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. (See FIGS. 8 and 9) 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 the predetermined left rotation or right rotation. can be moved.

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 protrusions 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 inserted into the through hole 26a of the support plate 26 as a support member inserted into the device main body 20.
It is internally movable (horizontal direction in Figure 1).

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).

As can be seen from FIGS. 7 and 11, the support plate 26 described above has protrusions 26 formed symmetrically around the circumference.
The projecting portions 26e and 26f are fitted into the fitting portion of the device main body 20 and fixed thereto. Figures 10, 12 to 14 show the support plate 2.
6 shows the fixing means of No.6.

As shown in FIG. 10, near the tip of the device main body 20, there are inner concave portions 20c, 20 that communicate with the tip opening.
d, and hook holes 20e and 20f that communicate with each of the concave portions 20c and 20d so as to form a pair with the concave portions 20c and 20d are formed. In particular, hook hole 2
0e and 20f have hook parts 20g and 20h (2
0h is not shown), and this is the support plate 2.
It prevents the number 6 from falling out.

When fixing the support plate 26, the device main body 2
From the end opening of 0, insert the cylinder lock, push shaft 25, return spring 28, and spring receiving plate 27.
After that, the protrusions 26e and 26 of the support plate 26 are installed inside the main body 20 of the device.
f into the inner concave portions 20c and 20d of the device main body 20. FIG. 12 shows this inserted state,
When the support plate 26 is fitted in this way, it is done against the expanding force of the return spring 28.

When the support plate 26 is rotated clockwise in FIG. 12 while being fitted, the protrusions 26e and 26f are fed into the hook holes 20e and 20f, resulting in the state shown in FIG. 13.

If the pressing force on the support plate 26 is released under this condition, the support plate 26 will move to the return spring 28.
The 14th was pushed back slightly by the expansion forces of
They are securely fixed in the fitted state shown in the figure.

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.

In addition, hook holes 20e and 20 provided in the device main body 20
f may be formed as a hook groove.

The return spring 28 is received by a spring receiving plate 27 provided inside the support plate 26, which is provided with a shaft hole 27a having the same shape as the through hole 26a and holes 26b, 26c of the support plate 26. The push shaft 25 is inserted into this shaft hole 27.
The spring receiving plate 27 is configured to rotate integrally with the push shaft 25 by being slidably inserted into the shaft a.

Further, an upright piece 27b is integrally formed on the spring receiving plate 27, and an action spring 29 is suspended between this upright piece 27b and an upright piece 26d integrally formed on the support plate 26. Receiving plate 2
The rotation of 7 has become sensitive.

The action spring 29 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 return spring 28 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 movement 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.

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 29 acts on the spring receiving plate 27. Due to the relationship, the push shaft 25 is
The position shown in Figure 6 is maintained, 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. 17 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 return spring 28.

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. 15 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. 15, and the rotor 21 rotates back to the key insertion position, so that the key can 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 the top of FIG. 16. Rotate it. This causes the push shaft 25 to rotate, resulting in the locked state shown in FIG. 15. 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 the support arm, and when the present invention is put into practice, the locking and unlocking may be performed from inside the vehicle. In this case, a drive mechanism for the control lever 31 is provided so that the lock control lever 31 is rotated clockwise in FIG. 15 to release the lock, and rotated counterclockwise in FIG. 16 to be locked. .

This drive mechanism is composed of, for example, an electromagnetic solenoid and a changeover switch that switches the solenoid current in the opposite direction when the electromagnetic drive member moves in one direction by electromagnetic induction. However, since locking and unlocking from inside the vehicle is not directly related to the present invention, the lock control lever 31 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 described above, according to the locking device of the present invention, by fitting the support member into the device main body, each member such as the cylinder lock, interlocking member, and return spring can be moved to a predetermined position within the device main body. Furthermore, since the supporting member is fixed by simply fitting it into the main body of the device, assembly of the locking device is extremely simple and efficient.

In addition, without increasing the external size of the device body,
Since each member can be assembled into the main body of the device, attachment to the back door becomes easy and the diameter of the attachment hole provided in the door can also be reduced.

In addition, 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 simplified diagram showing the connecting portion between the rotor and the push shaft, FIG. 9 is a front view of the push shaft, FIG. 10 is a perspective view showing the tip of the device body, FIG. 11 is a perspective view of the support plate, and FIG. 12 and 13 are partially cutaway rear views of the device main body showing the process of fitting the support plate, FIG. 14 is a partial view of the tip of the device main body showing the state in which the support plate is fitted, and FIGS. FIG. 16 is a simplified rear view of the locking device showing the operating state; FIG. 17 is a partially cutaway side view of the locking device showing the operating state;
Fig. 18 is a side view of a conventional locking device, Fig. 19 is a partially cutaway side view of the locking device showing its operating state, Fig. 20 is a rear view of the locking device, and Fig. 21 is a rear view of the locking device. It is a simplified diagram showing a closing mechanism. 20...Device main body, 20c, 20d...Inner concave portion, 20e, 20f...Hook hole, 21...Rotor, 22...Cylinder outer, 25...Push shaft, 25d, 25e...Protruding strip portion, 25
f, 25g...Stepped portion, 26...Support plate, 26a
...Through hole, 26b, 26c... Hole portion, 26e,
26f... protrusion, 27... spring receiving plate, 28...
Return spring, 29...Action spring, 31...Lock control lever, 32...Swivel lever.

Claims (1)

[Scope of utility model registration request] It is equipped with an interlocking member that rotates as the cylinder lock is unlocked and pushes the cylinder lock forward against the expanding force of the return spring to advance, and the door closes as the interlocking member moves forward. A locking device for an automobile back door configured to unlock the mechanism includes a through hole through which the interlocking member is slidably inserted, and a stopper provided on the interlocking member depending on the rotational position of the interlocking member. A support member is provided with a hole for locking or releasing the surface, and two or more protrusions are formed around the support member, while the device body has an inner surface that communicates with the tip opening. A fitting portion consisting of a concave portion and a hook hole or a hook groove communicated with the concave portion is formed corresponding to each protrusion of the support member, and the protrusion of the support member is attached to the main body of the device. A locking device characterized in that the support member is fixed within the device main body by penetrating into the inner concave portion against the expanding force of the return spring installed therein, and then feeding into the fitting portion.