JPH024208Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is provided between a linkage mechanism between a door lock of an automobile, etc. and a key cylinder device for locking and unlocking the door lock, and prevents the door lock from being unlocked by anything other than the key. This invention relates to a theft prevention device.

Even if the car's door locks are locked, a wire, etc., can be inserted into the door or the passenger compartment through the area around the window glass, and the tip of the wire can unlock the door lock or lock knob, allowing theft of the luggage inside the car or the car itself. There is a fear that they will meet.

In order to prevent such theft, modern cars are equipped with various anti-theft measures.
The more such anti-theft measures are strengthened, the more difficult it becomes to rescue people in emergencies.

For example, when attempting to rescue an unconscious person from outside the vehicle during an accident, if the door locks are locked from inside the vehicle and complete anti-theft measures are in place, the rescue operation may be difficult. , which has the disadvantage of preventing prompt rescue.

In view of the drawbacks of conventional theft prevention devices, the present invention has an antitheft function that works when the lock is locked by key operation, and can reliably prevent theft, but it does not require key operation, for example, to prevent theft. The purpose of the present invention is to provide an anti-theft device for a door lock operating device, which prevents the anti-theft function from working when the vehicle is locked by operating the lock knob from inside the vehicle, thereby eliminating the risk in the event of an accident as described above. That is.

The present invention will be described below based on embodiments shown in the accompanying drawings.

Reference numeral 1 denotes a casing, which is comprised of a rectangular box-shaped main body 2 with an open front, and a lid 3 that closes the front opening, and is fixed in a proper position inside the door of an automobile. On the inner surface of the main body 2 and the inner surface of the lid body 3, there are two pairs of vertical guide protrusions 2a, 2 on the left and right that correspond to each other.
b, 3a, 3b are formed, and an elongated hole 4 in the vertical direction is bored in the middle part of the right side wall 2c of the main body 2.

A first actuating member 5 is fitted into the elongated hole 4 so as to be slidable in the vertical direction.

The first actuating member 5 includes a base portion 5a that is wide in the front-rear direction and fitted into the casing 1, and a base portion 5a that is wide in the front-rear direction.
It consists of a projecting piece 5b which is connected to the center of the right side of the casing 1 and projects to the right side of the casing 1 through the elongated hole 4 and has a narrow width in the front-rear direction.

The top end of the protruding piece 5b is connected to the top end of a vertical rod 6 whose bottom end is connected to a lock/unlock lever (not shown) in a known door lock. In conjunction with the lock/unlock lever, it can be moved to an unlocked position shown in solid lines in FIG. 1 and a locked position also shown in imaginary lines.

7 is a second actuating member, and a side piece 7a forming the vertical direction
, a horizontal upper piece 7b and a lower piece 7c facing right, which are connected to the upper and lower parts thereof, and a protrusion 7d protruding from the middle part of the left side surface of the side piece 7a.

The second actuating member 7 is fitted onto the first actuating member 5 so that the upper piece 7b and the lower piece 7c sandwich the first actuating member 5 from above and below with an appropriate play in the vertical direction. The narrow parts 7e and 7f formed near the right side of the piece 7b and the lower piece 7c are inserted into the elongated hole 4.
By fitting the front and rear edges of the right side of the side piece 7a into sliding contact with the right side of the protrusions 2b and 3b of the casing 1, the movement of the first actuating member 5 from the unlocked position to the locked position is achieved. It is provided in the casing 1 so as to be slidable in the vertical direction over a range wider than the movement range by the amount of play.

The upper piece 7b of the second actuation member 7 and the first actuation member 5
The first actuating member 5
A compression spring 8 is provided as a biasing means for constantly biasing the second actuating member 7 toward the locked position, that is, downward.

In this embodiment, the downward biasing force of the first actuating member 5 due to the compression spring 8 is a force that attempts to restrain the locking/unlocking lever in the door lock in the unlocked position and the locked position, such as a biasing force such as an overcenter spring. There is a smaller one.

Reference numeral 9 denotes a third operating member, which includes a base 9a that extends in the vertical direction.
and a pair of upper and lower arm portions 9b and 9c facing right, which are connected to the upper and lower portions of the base portion 9a.

The front and rear surfaces of the base 9a are provided with grooves 1 extending in the vertical direction.
0a, 10b are bored, and each groove 10a, 1
0b into the guide protrusions 3a, 2a inside the casing 1, the third actuating member 9
is provided in the casing 1 so as to be slidable in the vertical direction.

The distance between the tips of the upper and lower arms 9b and 9c is as follows:
It is equal to or larger than the movement range of the second actuating member 7.

A stepped notch 9d is formed on the right edge of the front half of the base 9a from the middle to the top and bottom, and a step 9e is formed at the lower end of the notch 9d.

The lower end of a vertical rod 13 whose upper end is connected to the tip of a key lever 12 of a known key cylinder device 11 provided on the door is connected to the upper end of the base 9a.

The key cylinder device 11 is normally located at a neutral position in which the key lever 12 faces left in FIG. The key lever 1 can be rotated in the unlocking direction, which is clockwise in the figure, and the locking direction, which is counterclockwise in FIG. 1, and when the key is removed.
2 will always return to the middle position.

The third actuating member 9 works in conjunction with the key lever 12, and as shown in FIG. As shown in FIG. 3, from the neutral position where the upper arm 9b can move freely between the
As shown in FIG. 4, the downward locking direction of pushing the
Via the actuating member 7, it can be moved in an upward unlocking direction which pushes the first actuating member 5 into the unlocking position.

Almost in the center of the casing 1, there is a claw 1 at the tip.
An intermediate portion of the locking lever 14 having the locking lever 4a is pivotally mounted with a shaft 15 extending in the front-rear direction. The locking lever 14 has one end fixed to the locking lever 14 and the other end fixed to the main body 2, and the middle portion is fixed to the shaft 1.
A torsion spring 16 wound around the main body 2 is always biased counterclockwise in FIG. , it's starting to stop.

The pawl 14a of the locking lever 14 engages with the protrusion 7d of the second actuating member 7 when the second actuating member 7 exceeds the locked position of the first actuating member 5 and descends excessively by the amount of play. , thereafter the second actuating member 7
It is designed to prevent the upward movement of

To release the engagement between the pawl 14a of this locking lever 14 and the projection 7d of the second actuating member 7, the third
moving the actuating member 9 from the neutral position in the unlocking direction;
This is only possible by rotating the base 14b of the locking lever 14 clockwise at the stepped portion 9e against the biasing force of the torsion spring 16.

Next, the operation of this embodiment will be explained.

The solid line in FIG. 1 shows a state in which the key lever 12 and the third actuating member 9 are in the neutral position, and the first actuating member 5 and the locking/unlocking lever of the door lock are in the unlocking position.

From this state, when the lock knob or the like inside the car is operated to move the locking/unlocking lever of the door lock from the inside of the car to the locked position, the first actuating member 5 and the second actuating member 7 are integrated. It is lowered to the locked position as shown by the imaginary line in FIG.

At this time, the second actuating member 7 is biased upward with respect to the first actuating member 5 due to the action of the compression spring 8.
It does not descend beyond 7, and therefore the protrusion
d does not engage with the pawl 14a of the locking lever 14.

Therefore, in this locked state, the door lock can be unlocked by operating the lock knob inside the car.
Accordingly, the first actuating member 5 and the second actuating member 7 can be returned to the positions shown by solid lines in FIG. Move the operating member 9 in the unlocking direction, push up the second operating member 7 and the first operating member 5 with the lower arm 9c,
You can also unlock the door lock.

However, when the key is inserted into the key cylinder device 11 from the state shown by the solid line in FIG.
When rotated from the neutral position in the locking direction,
The third actuating member 9 descends, first pushing down the second actuating member 7 with the upper arm 9b, compressing the compression spring 8, and then pushing down the first actuating member 5 to the locking position.

As shown by the solid line in FIG. 3, when the first actuating member 5 reaches the locked position, the second actuating member 7 is further lowered than the first actuating member 5 by the amount that the compression spring 8 is compressed. At this time, the pawl 14a of the locking lever 14 engages with the protrusion 7d, and then the key lever 1
Even when the second and third actuating members 9 return to their neutral positions as shown by imaginary lines in FIG. 3, the state of engagement between the protrusion 7d and the pawl 14a remains unchanged.

In this state, even if a thief attempts to move the door lock lever or the lock knob inside the vehicle in the unlocking direction using a wire or the like, the engagement between the protrusion 7d and the pawl 14a will cause the Since the upward movement of the second actuating member 7 is restrained and the first actuating member 5 is restrained in the locked position by the second actuating member 7, the door lock cannot be unlocked.

If it is desired to unlock the door from this state, the key lever 12 may be moved in the unlocking direction by key operation.

As a result, the third actuating member 9 moves upward from the neutral position shown by the imaginary line in FIG. After releasing the engagement with the protrusion 7d, the second actuating member 7 is moved with the lower arm 9c.
The door lock can be unlocked by pushing up the first actuating member 5 and returning it to the unlocked position as shown in FIG.

As is clear from the above, according to the present invention, when the door lock is locked by key operation, the theft prevention function works and it is possible to reliably prevent theft. When the door lock is locked, the theft prevention function does not work, so there is no risk of hindering quick rescue operations from outside the vehicle in the event of an accident, unlike with conventional theft prevention devices, and this has the advantage of being preferable from a safety standpoint. .

In addition, when locking the door from inside the car, there are people inside the car, so there is no problem even if the anti-theft function does not work in such a case.The only time you want to activate the anti-theft function is when all occupants have exited the car. Since the present invention is applicable only when leaving the vehicle, it can be said that the present invention is most in line with such actual circumstances.

In the above-described embodiment, the downward biasing force of the first actuating member 5 by the compression spring 8 is made smaller than the force restraining the lock/unlock lever in the door lock to the locked position. The force may be greater than the force that restrains the lock/unlock lever of the door lock to the locked position.

In this case, the key lever 12 is
When the third actuating member 9 is rotated in the locking direction, the third actuating member 9 descends and pushes down the second actuating member 7 with its upper arm 9b, but at this time, the compression spring 8 does not contract.
The second actuating member 7 and the first actuating member 5 are pushed down as shown by the imaginary line in FIG. 1 while maintaining the state shown by the solid line in FIG. 1, and the first actuating member 5 reaches the locked position. Also, the protrusion 7d does not engage with the pawl 14a of the locking lever 14.

In this state, if the key lever 12 is returned to the neutral position using the key, the theft prevention function will not work.
The door lock can be locked, but if the key is further operated from this locked state with a force greater than the biasing force of the compression spring 8, the compression spring 8 will be compressed and the second actuating member 7 will be in the locked position. It is further lowered from the member 5, and the pawl 14a of the locking lever 14 engages with the protrusion 7d, resulting in a locked state with theft prevention function.

In this way, by only slightly changing the biasing force of the compression spring 8, when locking by key operation, the door lock can be locked without the theft prevention function if the door is operated lightly. Furthermore, if the key is operated excessively with a slightly strong force, the door lock can be locked with the anti-theft function provided, which is an optional function.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a longitudinal sectional front view of the main parts, showing the state when the key lever is in the neutral position and the door lock is unlocked with solid lines, and the state when the door lock is locked from inside the vehicle with imaginary lines. The figure is a cross-sectional view taken along the - line in Figure 1, and Figure 3 is a solid line showing the state when the door lock is locked by key operation.
4 is a vertical sectional front view similar to FIG. 1 showing the state when the key lever is returned to the neutral position using imaginary lines, and FIG. 4 is the same as FIG. 1 showing the state when the door lock is unlocked by key operation. FIG. 1... Casing, 5... First operating member, 7...
...Second operating member, 7d...Protrusion, 8...Compression spring, 9...Third operating member, 14...Lock lever.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A casing fixed to the inside of the door is provided so as to be movable between the locked and unlocked positions in conjunction with the lock/unlock lever of the door lock provided inside the door. a first actuating member; provided in the casing so as to be movable in substantially the same direction as the moving direction of the first actuating member over a range slightly wider than the moving range of the first actuating member; a second actuating member that is fitted to each other with an appropriate play in a movable direction and has protrusions at appropriate positions, and is provided between the first actuating member and the second actuating member, and a biasing means that constantly biases the first actuating member toward the locked position relative to the second actuating member; provided in the casing so as to be movable in substantially the same direction as the moving direction of the first actuating member; , comprising a pair of arms for pushing the second actuating member, and linked to a key cylinder device of the door, wherein the first actuating member is normally in a locked position and an unlocked position between the two arm parts. However, by actuation of the key cylinder device, the first actuating member is moved to the locked position using each of the arms via the second actuating member. and a third actuating member that is provided in the casing and is pushed to the protrusion when the second actuating member moves excessively by the amount of play beyond the first actuating member that is in the locked position. The second actuating member is engaged with the protrusion to restrain movement of the second actuating member in the unlocking direction, and when the third actuating member moves from the neutral position in the unlocking direction, the third actuating member engages with the protrusion. 1. A theft prevention device for a door lock operating device, comprising a locking lever that can be released. (2) Claim (1) of the utility model registration claim characterized in that the biasing force of the first actuating member by the biasing means is smaller than the force that restrains the lock/unlock lever in the door lock to the locked position. anti-theft device. (3) The utility model registered in claim (1) is characterized in that the biasing force of the first actuating member by the biasing means is greater than the force that restrains the lock/unlock lever in the door lock to the unlocked position. Theft prevention device mentioned.