JP5220397B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device.

  As a lock device that drives the lock member between the unlocked and unlocked positions by rotating the handle, the one disclosed in Patent Document 1 is known. In this conventional example, the lock device includes a knob (operation handle) that is rotatably connected to a main body (base), and a lock member that is driven forward and backward by a rotation operation of the operation handle. An attachment hole is opened in the base, and a key cylinder (plug) is inserted. By rotating this plug, it is determined whether or not the operation handle can be rotated.

In order to prevent the rattling of the plug, the lever connected to the plug is provided with a pressing piece that presses the rear end of the plug, thereby preventing the rattling of the plug.
JP-A-8-189237

  However, in the above-described conventional example, since the pressing piece always presses the rear end of the key cylinder, it becomes impossible to give a pressing force due to creep or the like due to long-term use, and rattling occurs. There are drawbacks.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a locking device that does not cause looseness of the plug even after long-term use.

The lock device is connected to the base 1 and is operated to rotate between the initial rotation position and the rotation operation position. The lock device is moved from the lock position to the unlock position by rotating the operation handle 2 from the initial rotation position. And a movable lock member 3. A plug 4 is attached to either the operation handle 2 or the base 1 so as to be rotatable between the locking and unlocking rotation positions. The plug 4 is locked to the base 1 or the operation handle 2 in the locking rotation position, that is, the base 1 when the plug 4 is attached to the operation handle 2 or the operation handle 2 when the plug 4 is attached to the base 1. Then, the operation handle 2 is restrained to the initial rotation position. The plug 4 can be rotated from the locking rotation position to the unlocking rotation position by a genuine unlocking key, and the restriction on the operation handle 2 is released at the unlocking rotation position.

The base 1 when the plug 4 is attached to the operation handle 2 described above, or the plug pressing portion 5 formed on the operation handle 2 when the plug 4 is attached to the base 1 is from the rotational operation position of the operation handle 2. Along with the returning operation to the initial rotation position, the plug 4 is pushed forward by interfering with the rear end of the plug 4 to prevent the plug 4 from rattling.

  Accordingly, in the present invention, even if there is rattling between the plug 4 and the plug holding portion, rattling does not occur in the assembled state as the locking device. It is not necessary to maintain accuracy.

Further, by mounting the plug 4 on one of the relative movements and forming the plug pressing part 5 on the other, the relative position of the plug 4 and the plug pressing part 5 changes with the operation of the operation handle 2. As a result, a stress releasing opportunity at the plug pressing portion 5 or the plug support portion when being pressed by the plug pressing portion 5 is given, so that the position does not sag due to creep or the like, and the plug 4 is extended over a long period. It is possible to prevent the occurrence of rattling by holding the pressing force.
Moreover, according to the present invention,
An operation handle 2 coupled to the base 1 so as to be rotatable between an initial rotation position and a rotation operation position;
A lock member 3 that is driven between a lock and unlock position by a rotation operation to the operation handle 2;
A locking device including a plug 4 that is rotatably attached to one of the operation handle 2 and the base 1 and that locks the operation handle 2 at the initial rotation position by being locked to the other at the locking rotation position. ,
The other member interferes with the rear end portion of the plug 4 on the return path to the initial rotation position of the operation handle 2, and when the operation handle 2 is in the initial rotation position, the plug pressing portion 5 presses the plug 4 forward. It is also possible to provide a locking device provided with

  According to the present invention, the occurrence of rattling of the plug can be prevented even after long-term use.

  FIG. 1 shows an embodiment of the present invention configured as a lid lock of a glove box of an automobile. The lid lock is formed by connecting the operation handle 2 to the base 1 so as to be rotatable.

  A finger-hanging portion 2a is bulged over the entire bottom surface of the lower end of the operation handle 2, and a lock holding cylinder 2b is formed at the center of the rear surface. The lock holding cylinder 2b is open at both ends, and two lock members 3 and 3 are inserted into the lock holding cylinder 2b so as to be rotatable and movable in the longitudinal direction.

  The lock member 3 is a casing in which a lock collar portion 3c having a rectangular cross section is projected from one end of a cylindrical cam portion 3b having a cam groove 3a formed on the outer periphery, and the lock collar portions 3c and 3c are respectively opened to the lock holding cylinder 2b. It is housed in a back posture toward the end. On the inner wall of the lock holding cylinder 2b, a cam projection 2c is slidably fitted into the cam groove 3a of the cylindrical cam portion 3b. Each lock member 3 is urged toward the lock position where the lock collar 3c protrudes from the lock holding cylinder 2b by the compression spring 7 housed in the center of the lock holding cylinder 2b.

  The base 1 is formed by protruding the hinge piece 1a from both ends of the main body fixed to the lid, and the lock collar 3c of the lock member 3 is inserted into a rectangular opening 1b opened in the hinge piece 1a.

  In a state where the locking device is fixed to the lid and no operating force is applied to the operation handle 2, the lock collar portion 3c of the lock portion is held at the lock position protruding from the lock holding cylinder 2b. In this state, the lock hook 3c is engaged with a strike (not shown) on the glove box side, and the closed state of the lid is maintained.

  When the finger is placed on the finger hooking portion 2a of the operation handle 2 from this locked state and pulled out to the near side, the operation handle 2 idles around the cylindrical cam portion 3b of the lock member 3 that cannot be rotated relative to the base 1. When the cylindrical cam portion 3b and the operation handle 2, that is, the cam protrusion 2c in the lock holding cylinder 2b are relatively rotated, an axial driving force is generated in the cylindrical cam portion 3b. The cam groove 3a of the cylindrical cam portion 3b is set so that the cylindrical cam moves in the center direction of the lock holding cylinder 2b with respect to the rotation of the cam projection 2c in the above-described direction. Translate to direction and move to unlock position. In the unlocked position, the lock collar 3c is detached from the position where it is engaged with the strike, so that the lid can be opened.

  When the operation force is released while the operation handle 2 is rotated, the urging force in the protruding direction acts on the lock member 3 due to the restoring force of the compression spring 7, and the cam groove 3a is pressed against the cam protrusion 2c. As a result, the cam protrusion 2c generates a rotational force from the cam groove 3a, and the operation handle 2 returns to the initial rotation position as the lock member 3 moves toward the lock position.

  In order to restrict unrestricted rotational operation to the operation handle 2, a locking portion is set in the lock device. In order to simplify the structure and reduce the cost, the locking portion is formed by inserting the plug 4 into the plug holding cylinder 2d formed on the operation handle 2. As shown in FIG. 3, a retaining tumbler 4a is attached to the rear end of the plug 4, and when the plug 4 is pushed into the plug holding cylinder 2d, the retaining tumbler 4a is removed from the plug holding cylinder 2d. After immersing into the plug 4 once by the inclined surface 2f formed on the stop protrusion 2e, the plug 4 is returned to the protruding position by the restoring force of the compression spring (not shown), and is then locked on the stop protrusion 2e. Desorption from 2d is regulated.

  The plug 4 includes a tumbler (not shown), and can be rotated from the locked position to the unlocked position by using a genuine unlocking key (not shown).

  As shown in FIGS. 3 and 4, a locking protrusion 4 b protrudes from the rear end of the plug 4, and a lock step 1 c protrudes forward from the main body of the base 1. As shown in FIG. 4, the plug 4 is rotated 90 ° between the unlocked position shown in FIG. 4 (a) and the locked position shown in FIG. 4 (b), and accordingly, the locking projection 4b. Moves to a line-symmetrical position with respect to the left-right center. On the other hand, the lock step 1c is disposed below the lock projection 4b when the plug 4 is in the locked position.

  Therefore, in this embodiment, when the plug 4 is rotated to the locking position, the downward movement of the locking projection 4b of the plug 4 is restricted by the lock step 1c. As shown, the rotation of the operation handle 2 accompanying the downward movement of the locking projection 4b is restricted. On the other hand, when the plug 4 is in the unlocked position, the downward path of the locking projection 4b is not blocked by the lock step 1c, and thus the rotation operation to the operation handle 2 is allowed.

  The base 1 is formed with a plug pressing portion 5 that presses the rear end of the plug 4 at the locking / unlocking position. As shown in FIG. 1, the plug pressing portion 5 is formed in a horizontally long plate shape corresponding to the locking projection 4b of the plug 4 in the locking / unlocking position, and projects upward with the upper end of the lock step portion 1c as the base end. It is. As shown in FIG. 3B, the front surface of the plug pressing portion 5 is an inclined surface 5a that gradually inclines forward as it goes upward.

  Therefore, in this embodiment, when the operation handle 2 returns from the rotational position, the locking projection 4b of the plug 4 enters the upper region through the side of the locking step 1c. The locking protrusion 4b eventually comes into contact with the inclined surface 5a of the plug pressing portion 5 as it moves upward, and the plug pressing portion 5 formed in a cantilever shape and elastically deformable is slightly elastically deformed while being locked. The projection 4b is received.

  The return rotation of the operation handle 2 stops at a position where the return force of the operation handle 2 by the compression spring 7 and the resistance force from the inclined surface 5a of the plug pressing portion 5 against the locking projection 4b are balanced. In this stop position, the plug 4 is pressed forward to come into pressure contact with a forward stopper wall such as the retaining protrusion 2e of the base 1 to prevent rattling. When the operation handle 2 is rotated from this state, the elastic deformation of the plug pressing portion 5 and the pressure contact state against the stopper wall are released, and a new pressure contact state is generated when returning to the initial rotation position again.

  3 (c) and 3 (d), a small protrusion 4c is formed at the tip of the plug pressing portion 5 or the locking protrusion 4b of the plug 4, and the small protrusion 4c is fitted on the other side. When the concave portion 4d to be formed is formed, a moderation feeling when the operation handle 2 is restored can be generated.

  Further, in FIGS. 3C and 3D, the small protrusion 4c and the recess 4d are formed so as to be fitted with the vertical movement of the locking protrusion 4b, and the operation handle 2 is moved to the initial rotation position. Although it is configured so as to generate a moderation feeling at the time of return, if the small protrusion 4c and the recess 4d are configured as a click mechanism 6 that fits along with the lateral movement of the locking protrusion 4b, the plug 4 is When the rotation operation is performed between locking and unlocking, the small protrusion 4c is elastically fitted into the recess 4d and a feeling of moderation is generated.

  In the above description, the plug pressing portion 5 is formed upward from the lock step portion 1c. However, as shown in FIG. 5, the plug pressing portion 5 can be formed in a posture in which the free edge is directed downward. In this case, the inclined surface 5a is formed at the lower end edge of the plug pressing portion 5 and interferes with the upward movement of the locking projection 4b.

It is a figure which shows this invention, (a) is a front view, (b) is a rear view, (c) is a side view. It is a figure which shows a locking member, (a) is a rear view, (b) is a principal part enlarged view, (c) is a side view. FIGS. 3A and 3A are cross-sectional views of FIG. 1B, FIG. 1B is a diagram illustrating a state in which the operation handle is rotated, and FIG. (D) is a figure which shows the 2nd modification which formed the small protrusion in the plug press part side. It is a figure which shows a plug, (a) is a 4A-4A sectional view taken on the line of Fig.3 (a), (b) is a figure which shows the state which rotated the plug to the locking position. It is a figure which shows a 3rd modification, (a) is a rear view, (b) is a 5B-5B sectional view taken on the line (a), (c) is a figure which shows the state which rotated the operation handle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Operation handle 3 Lock member 4 Plug 5 Plug press part 6 Click mechanism

Claims (4)

An operation handle coupled to the base so as to be freely rotatable between an initial rotation position and a rotation operation position;
A locking member that is driven between a lock and unlock position by a rotation operation to the operation handle;
A locking device including a plug that is rotatably mounted on one of the operation handle and the base and that locks the other in the locked rotation position to restrain the operation handle at the initial rotation position;
The base when the plug is attached to the operation handle or the operation handle when the plug is attached to the base is connected to the back of the plug in accordance with the return operation from the rotation operation position of the operation handle to the initial rotation position. A locking device provided with a plug pressing portion that interferes with the end portion and presses the plug forward when the operation handle is in the initial rotation position. A return urging force toward the initial rotation position is applied to the operation handle,
The locking device according to claim 1, wherein the plug pressing portion obtains a pressing force against the plug by a return biasing force.   The locking device according to claim 1, wherein the plug pressing portion is formed in a cantilever shape and is elastically deformable. Wherein the contact portion between the plug pressing portion and the plug rear end part, whereas one plug unlocking, or according to any one of claims 1 to click mechanism for moderation stop plug is formed 3 in both positions Locking device.

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