JPS60454Y2 - Automatic return device for cylinder lock cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic return device for the cover of a cylinder lock, particularly a cylinder lock used in the trunk of an automobile.

Some cylinder locks in the trunk of automobiles are equipped with a cover, and this cover automatically returns from an open state to a closed state by the release of a spring installed between the cover and the rotor case. There is something.

By the way, in conventional cover automatic return devices, when the cover is opened, a spring acts on the cover, so it is necessary to hold the cover by hand in order to keep the cover open during key operations. , so I had no choice but to use both hands.

By the way, it would be convenient if the cylinder lock keys could be operated with one hand.

The automatic cover return device for cylinder locks according to the present invention was developed from this point of view. Once the cover is opened, the key is inserted into the rotor to unlock and rotate the lock, and while the cover is being locked and rotated, the cover is opened. The cover is automatically maintained when the key is locked and rotated, and when the key is removed from the rotor, the cover is automatically closed, allowing one-handed key operation.

The present invention will be specifically described below with reference to the illustrated embodiments.

The illustrated embodiment is an application of the present invention to a cylinder lock used in the trunk of an automobile.

As shown in FIG. 5, the seat plate 5 is installed on the trunk body 4, and the cylindrical main body portion 1a of the port case 1 containing the rotor 3 is inserted into the respective mounting holes of the seat plate 5 and the trunk body 4. A flange portion 1b projecting around the upper portion of the main body portion 1a of the rotor case 1 is fixed on the seat plate 5.

A cover 2 is installed on the upper surface of the flange 1b of the rotor case 1.

The cover 2 has a cylindrical protrusion 12 on the back corner thereof,
This protrusion 12 is rotatably inserted into a hole provided at a predetermined position in the flange 1b of the rotor case 1, and is configured to rotate along the upper surface of the flange 1b using the protrusion 12 as a fulcrum.

A coil spring 10 is fitted into the outer periphery of the protrusion 12, and a disk-shaped seat plate 17 is attached to the lower end of the protrusion 12 with screws 11.
It is fixed by

The lower end of the spring 10 is fixed between a pair of protrusions 7 of the seat plate 17, while the upper end of the spring 10 is fixed between a pair of protrusions 1 formed on the lower surface of the flange 1b of the rotor case.
When the cover 2 is opened to expose the rotor 3, the spring force of the spring 10 causes the cover 2 to automatically close when the user releases the sitting cover 2.

The head 3a of the rotor 3 incorporates a slide piece 9 that slides in the rotor radial outward direction by the key 21 when the key 21 is inserted into the key hole 20.

This slide piece 9 has a notch 9 into which the key 21 is inserted.
It is a U-shaped plate with a in the center, and has a key hole 20.
is inserted into a cavity 23 formed around the .

Further, a part of the outer periphery of the head 3a of the rotor 3 is cut out to form a cavity 22 communicating with the cavity 23, so that the outer end of the slide piece 9 can enter and retract into this cavity 22. .

Furthermore, a guide groove 19 is formed in the circumferential direction on the side surface of the head 3a of the rotor 3, and a portion of the protrusion 8 is slidably fitted into the guide groove 19.

A portion of the protrusion 8 protrudes from the guide groove 19 and is slidably fitted into a circumferential guide groove 24 formed on the opposing surface of the flange 1b of the rotor case 1.

The top of this protrusion 8 slightly protrudes from the upper surface of the rotor 3 and the upper surface of the rotor case 1, as shown in FIG.

On the other hand, protrusions 13 and 14 engaging protrusions 15 are formed at predetermined positions on the back surface of the cover 2 in the order of distance from the center of rotation of the cover 2.

Note that these parts are shown with grid lines in FIGS. 1 to 3.

The engaging protrusion 15 cooperates with the protrusion 8, and has a triangular cross section as shown in FIG. The guide groove 24 is engaged by riding over the projection 8 located at one end of the guide groove 24 (at this time, the cover 2 is slightly raised).

Therefore, in this state, although the force of the spring 10 acts to return the cover 2 to its original position (closed position), the cover 2 remains open even if the hand is removed from the cover 2.

The two projecting walls 13 and 14 are both long walls, and one of the projecting walls 13 cooperates with the slide piece 9 and the side surface of the rotor 3, and as shown in FIG. After opening, insert the key 21 into the key hole 20 of the rotor.
The outer end of the slide piece 9 comes into contact with the protruding wall 13 when the slide piece 9 is inserted into the rotor and slid radially outward so that its outer end protrudes into the cavity 22. 3, when the key 21 is unlocked and rotated together with the rotor 3, the slide piece 9
Instead, the side surface of the rotor 3 itself comes into sliding contact with the projecting wall 13.

Therefore, when the rotor 3 is unlocked and rotated, that is, changed from the state shown in FIG. 2 to the state shown in FIG.
4 is moved and disengaged from the engagement protrusion 15, but the cover 2 remains open.

The other protruding wall 14 works together with the protrusion 8, and as shown in FIG. 2, it is not in contact with the protrusion 8 when the cover 2 is opened, but as shown in FIG. As shown, when the protrusion 8 is disengaged from the engagement protrusion 15 and moved within the guide groove 24, it comes into contact with the protrusion 8.

Then, the key 21 is locked and rotated, that is, returned from the state shown in FIG. 3 to the state shown in FIG. 2, and then the key 21 is removed from the key hole 20 of the rotor 3.
Since the engagement of the spring 10 is released, the cover 2 is rotated in the closing direction by the force of the spring 10, the slide piece 9 is pushed back by the projecting wall 13, and the protrusion 8 is returned to its original position by the projecting wall 14. It's like being pushed back.

Therefore, in the above structure, once the cover 2 is opened and the engaging protrusion 15 and the protrusion 8 are engaged with each other, the cover 2 is held in an open state, and the key 21 is inserted into the rotor 3 to unlock, rotate, or During locking and rotation, the cover 2 is held open by the cooperation of the slide piece 9, the side surface of the rotor 3, and one of the protruding walls 13, and only when the key 21 is removed from the rotor is the cover 2 held open by the spring 10. It will automatically close when you say a phrase.

In addition, 16 in the figure is a fan-shaped projecting wall provided at a predetermined position on the top surface of the rotor case 1. When the cover 2 is opened, the end of the projecting wall 13 on the back surface of the cover comes into contact with this, and the cover 2 is opened. It is designed not to open too much.

Moreover, 6 is an ornament plate fitted into the upper surface of the cover 2.

The present invention can be implemented in various ways other than the above-mentioned embodiments.

In the above embodiment, the projecting wall 13 of the cover 2 comes into contact with the slide piece 9 when the key 21 is inserted, and the side surface of the rotor when the rotor 3 is unlocked and rotated. If the opening degree can be made smaller than shown, or if the rotation angle of the rotor 3 can be made smaller, the slide piece 9 can be kept in constant contact with the projecting wall 13 even when the rotor 3 is unlocked and rotated. In this case, there is no need for the rotor side surface to be in contact with the protruding wall 13.

As is clear from the above explanation, according to the automatic return device for the cover of a cylinder lock according to the present invention, once the cover is opened, the key is inserted into the rotor to unlock and rotate, and the locking and rotating process is performed. The cover is automatically maintained in the open state, while the cover is automatically closed when the key is pulled out of the rotor after locking and rotating the key, making it easy to operate the keys with one hand. I can be a distant relative of the purpose.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention. Fig. 1 is a plan view of the cylinder lock with the cover closed, Fig. 2 is a plan view of the cylinder lock with the cover open, and Fig. 3 shows the rotor with the key. Figure 4 is a plan view of the cylinder lock in the unlocked and rotated state.
FIG. 5 is a cross-sectional view of the main part taken along the line IV-V, and FIG. 5 is a cross-sectional view taken along the line ■-■ in FIG. DESCRIPTION OF SYMBOLS 1... Rotor case, 2... Cover, 3... Rotor, 8... Protrusion, 9... Slide piece, 10...
・Coil spring, 13, 14... Projection wall, 15...
- Engagement protrusion, 19... guide groove.

Claims (1)

[Scope of utility model registration request] A cover of a cylinder lock, which has a cover pivoted to the rotor case that rotates around a fulcrum to open and close the top of the rotor, and a spring that automatically returns the cover from the open state to the closed state between the rotor case and the cover. In this automatic return device, a guide groove is formed in the circumferential direction of the rotor side surface into which a protrusion that protrudes toward the cover is slidably inserted, and a slide piece that protrudes radially outward of the rotor when a key is inserted into the rotor. is incorporated into the rotor, while
On the back side of the cover, when the cover is opened and rotated against the force of the spring, it engages over the protrusions and maintains the open state of the cover, while the rotor is unlocked and rotated and the protrusions engage with the rotor. An engagement protrusion that disengages from the protrusion when the protrusion is engaged with a part and moved a certain distance in the same direction as the rotor rotation, and the above-mentioned slide while the rotor is unlocked/rotated or locked/rotated. A long protruding wall that slides into contact with the piece or the side of the rotor to keep the cover open, and also slides into contact with the slide piece and pushes the slide piece back to its original position when the key is removed from the rotor; An automatic return device for a cover of a cylinder lock, characterized in that a long projecting wall is formed that slides on the protrusion and pushes the protrusion back to its original position along the guide groove.