JP2007162230A - Key for lock of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily unlock a lock, and to easily combine constituting members, by pushing in a key by fingers (including a case of pushing in while picking) from a viewpoint of barrier-free. <P>SOLUTION: This key for the lock is composed of a key body K having a cam engaging part 3 on an outside surface of a columnar cam 1 and a blade part 2 on a tip surface 1a, and a storage case 10 out-fitted to the cam 1 and having a curved control guide part 4 engaging with the cam engaging part 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lock key attached to a condominium or a detached entrance door (entrance door).

  Ordinary household entrance doors are usually fitted with ordinary locks that are inserted from the outside of the doors (hereinafter referred to as “keys”), and rotated and unlocked.

  This type of lock key is recognized as an operating means for unlocking or locking a lock that is attached to the free end portion side of the door and mounted inside. For example, when a cylinder lock with a movable obstruction (pin tumbler) is attached to the lock box in a set with the thumb turn device, and the blade part of the key is inserted into the keyhole of the cylinder lock from the outside of the door, the movable obstruction is Since the cylinder and the outer cylinder are aligned with the shear line (in which the inner cylinder is rotatable), the key can be rotated 90 degrees clockwise or counterclockwise. It is an activity that people go to when they go out or go home every day.

  In other words, when the key is inserted into the keyhole of the cylinder lock and rotated by a predetermined amount in the unlocking direction or the locking direction, the driving arm called “Dharma” rotates a predetermined amount by the operating force. A long plate-like locking piece, called a dead bolt, moves forward and backward (engagement / disengagement) with respect to the rectangular engagement hole of the cover plate-like strike of the receiving bracket provided in the lateral recess of the door frame To do.

  By the way, it is necessary to rotate the knob at least at the time of unlocking the key, but when considering a product from the viewpoint of barrier-free for people with disabilities, physically disabled people, elderly people, etc. For this, it is desirable that the key body can be easily turned with the operating force of a finger during unlocking.

  Japanese Patent Application Laid-Open No. 2004-151867 attempts to facilitate the rotational force of a key by devising a knob portion of the key. That is, in the key of Patent Document 1, an operation plate that can be protruded laterally from the key body is pivotally supported on the knob portion of the key body. For example, when unlocking (when the key body is rotated), first, with a finger The operation plate is rotated laterally to protrude from the key body, and then the key body is inserted into the lock and the knob is twisted while applying force to the operation plate. If it does so, since a key main body can be rotated with an operation board and a knob | pick part, a big rotational force is obtained with little force.

  However, the key with the above configuration has a problem that the operation plate must be rotated to the unlocked or locked position during operation.

Accordingly, there is a demand for the appearance of a lock key that can be easily rotated at least during unlocking.
Japanese Patent Laid-Open No. 6-1108917

  The first object of the present invention is that the lock can be easily unlocked by pushing a key with a finger (including a case where the key is pushed while picking) from the viewpoint of barrier-free. The second purpose is that the constituent members can be easily combined. The third object is that the lock key can be rotated in both the unlocking direction and the locking direction by a switching means with a simple configuration.

  The key for locking according to the present invention includes a key body K having a cam engaging portion 3 on the outer surface of a cylindrical cam 1 and a blade portion 2 on the front end surface 1a, and the cam engaging portion. And a storage case 10 having a curved control guide portion 4 that engages with the housing 3.

(A) From the viewpoint of barrier-free, the lock can be easily unlocked by pressing the key with a finger.
(B) In the case of the embodiment in which the key body K is inserted into the case body and the cap-shaped locking means is screwed onto the case body, the constituent members can be easily combined.
(C) The lock key can be rotated both in the unlocking direction and in the locking direction by the switching means having a simple configuration.
(D) According to the invention of claim 3, when the key body K is rotated in both the unlocking direction and / or the locking direction, the storage case is automatically released when the finger is released from the storage case 10. Return to the initial position. Even when the return spring 20 is a limiting requirement of the invention, the effect of the invention is not changed.

  The best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 5 will be described below.

(1) Environment for Implementing the Invention FIG. 1 is an exploded perspective view of a first embodiment. 2 is a schematic explanatory view showing the main part (the key body K and the return spring 20), FIG. 3 is a schematic explanatory view in which the key body K and the return spring 20 are put in the case body 10a, and FIG. 4 is in the state of FIG. Here, it is a schematic explanatory view in which the cup-shaped locking means 10b is screwed into the case body 10a.

  First, X is a key generally used in daily life. Next, the key X includes a key body K, a storage case 10 and a return spring 20. The key body K includes a cam 1 and a blade portion 2 that continuously protrudes from the front end surface 1 a of the cam 1. On the other hand, the storage case 10 includes a case main body 10a and cup-shaped locking means 10b that is detachably screwed to the case main body 10a.

  In other words, the key X of this embodiment is externally fitted to the cam 1 with the key body K having the cam engaging portion 3 on the outer surface of the cylindrical cam 1 and the blade portion 2 on the distal end surface 1a. The storage case 10 has a curved control guide portion 4 that engages with the cam engagement portion 3, and a return spring 20 that is housed between the inner surface of the storage case and one outer surface of the cam.

  Therefore, the key X is constituted by a combination of “three parts” of the key body K, the storage case 10 and the return spring 20. Specific requirements (three parts) of the present invention will be described sequentially.

(2) Key body K
First, the key body K of the key X will be described. The cam 1 of the key body K is hollow or solid. Therefore, 1a is the front end surface of the cam 1, 1b is the cylindrical outer surface of the cam 1, and 1c is the rear end surface (one side outer surface) of the cam 1. Reference numeral 2 denotes a blade portion 2 protruding from the distal end surface 1a, and the blade portion 2 can be inserted into a key hole b of a lock a provided in a door (for example, a front door) of a fitting (see FIG. 5).

  In the key body K of this embodiment, the cylindrical cam 1 and the blade portion 2 are integrally formed of metal. Of course, the blade portion (blade piece having a base end portion) 2 may be a metal, while the cylindrical cam 1 may be a hard synthetic resin material. In the case of the embodiment in which the cylindrical cam 1 is formed of a hard synthetic resin material, an engagement groove (fitting) of a polygonal opening formed from the front end surface 1a to the rear end surface 1c of the cylindrical cam 1 is fitted. It is also possible to insert the base end of the blade piece 2 into the groove.

  Therefore, the key body K of the present invention can be inserted not only in the case where the cylindrical cam 1 is continuously formed on the blade portion 2 but also in the cylindrical cam 1 and an engagement groove (not shown) of the cam 1. The thing which consists of a blade piece 2 is also included.

  Reference numeral 3 denotes a cam engaging portion formed on the cylindrical outer surface 1b. In this embodiment, the cam engaging portion is a small engaging protrusion which is formed to protrude at an appropriate position near the tip surface 1a or is implanted in a mounting hole. The engaging protrusion 3 engages with the curved control guide 4 of the storage case 10.

  The cam engaging portion 3 is a small protrusion (cam protrusion) in the present embodiment. Of course, when the control guide portion 4 is convex, the small protrusion (cam protrusion) 3 is reversed. The design can be changed to a curved engagement recess (cam recess). When a plurality of cam engaging portions 3 are provided, a plurality of curved control guide portions 4 are formed in the storage case 10 corresponding to the number of cam engaging portions 3.

(3) Storage case 10
Next, the storage case 10 will be described. The storage case 10 according to the present embodiment includes a cylindrical case body 10a having a circular opening 12 at a front end portion 11, and cap-shaped locking means 10b that is screwed to the front end portion 11 of the case main body 10a. Consists of. The case body 10a is formed in a size that can accommodate the cylindrical cam 1.

  Thus, 11 is a front end portion of the case body 10a, 13 is a peripheral body portion, and 14 is a rear end portion. In the present embodiment, an unnumbered male screw is formed on the outer periphery of the tip portion 11 of the case body 10a, while an unnumbered female screw that is screwed to the male screw is formed on the inner peripheral surface of the locking means 10b.

  A circular opening 16 is formed at the center of the annular front wall, and the locking means 10b has a threaded portion that is provided around an unnumbered annular front wall. Since the storage case 10 is provided with a locking means (stopper) 10b at the distal end portion 11 of the case body 10a, the key body K has a spring force of the return spring 20 applied to the locking means 10b having a lid function during operation. Even if it acts on the tip side, it does not come off the case body 10a.

  In the present embodiment, the locking means 10b is provided at the front end portion 11 of the case body 10a. Of course, the design is changed, for example, the annular locking means 10b is provided at the rear end portion 14 of the case body 10a. On the other hand, an insertion hole (not shown) through which the blade portion 2 penetrates may be formed in the distal end portion 11.

  In addition, a locking rod (front wall) is used instead of the cap-shaped locking means 10b so that the key body K in which the cam 1 is stored in the case body 10a does not come off from the tip of the storage case 10 due to the spring force of the return spring 20. (Annular), a plurality of locking projections and the like can be provided at the tip 11 of the case body 10a. In short, it is sufficient that the key body K is not detached from the storage case 10 or the case body 10a by the spring force of the return spring 20.

  As shown in FIG. 1, the curved control guide portion 4 described above is formed in an arc shape in the peripheral body portion 13 from the front end portion 11 toward the rear end portion 14. The curved control guide portion 4 of the present embodiment is based on the technical idea that it is only necessary to “unlock” or “lock” at least the door lock (not shown). It is formed in the required shape (length).

  Therefore, the guide long hole as an example of the control guide portion 4 corresponds to the drive portion, while the engagement protrusion 3 that engages with the control guide portion 4 corresponds to the driven portion.

(4) Return spring 20
The return spring 20 is housed between the inner surface 14a of the rear end portion 14 of the storage case 10 and the outer surface 1c on the one side of the rear end portion of the cam. The return spring 20 of the present embodiment is a compression spring (pressing spring).

  Thus, a curved sliding piece 21 that slides on the rear end surface (one side outer surface) 1c of the cam 1 is attached to one end portion (front end portion) of the return spring 20. The other end of the return spring 20 is appropriately supported by the inner wall surface of the rear end 14 of the case body 10a. In addition, since the sliding piece 21 is a subordinate structure of the return spring 20, instead of the sliding piece 21, for example, one end portion (tip portion) of the return spring 20 may be spherical, hemispherical, or the like.

(5) Action FIG. 5 is an explanatory view showing the action. When unlocking the lock, the blade portion 2 of the key X is inserted into the key hole b of the lock a, and the outer surface (front surface) of the rear end portion 14 of the storage case 10 (case body 10a) is pointed in the direction of arrow A. When the key body K is pushed in, the cam 1 of the key body K rotates 90 degrees in the unlocking direction due to the sliding contact relationship between the engagement protrusion 3 and the control guide portion 4 and in conjunction with the horizontal movement of the case body 10. At this time, the position of the engaging protrusion 3 is displaced toward the rear end portion 14 along the curvature of the control guide portion 4 of the storage case body 10.

When the lock is unlocked, when the finger is released from the case main body 10a as it is, the blade portion 2 of the key X is inserted and fixed in the key hole b of the lock a. (Or, depending on the design, the case body 10a) rotates. Then, the engagement protrusion 3 of the cam 1 of the key body K automatically returns to the initial position.
In the case of the embodiment in which the return spring 20 is not a specific requirement, the storage case 10 is returned to the initial position with a finger.

  In the example shown in the embodiment of the invention, first, a curved slide piece 21 that slides on the rear end face 1c of the cam 1 is attached to one end portion of the return spring 20. As the material, a synthetic resin material that improves sliding is appropriately selected. Further, grease may be applied between the rear end surface 1 c of the cam 1 and the curved outer surface of the sliding piece 21.

  Next, the control guide 4 of the key X may be configured as shown in FIG. That is, the control guide 4A formed in the storage case 10A of the key X1 in FIG. 6 is formed symmetrically so that the key body K can be rotated in the unlocking and locking directions. The control guide 4A may be formed on either the cam 1 of the key body K or the case body 10a.

  The keys X and X1 of this embodiment are those in which the cam 1 of the key body K in the storage case rotates in a predetermined direction (unlocking direction and / or locking direction) by pushing the storage case (10, 10A). However, during the push-in operation, it may be pushed in while holding the storage case with a finger. At that time, even if the storage case is pushed in while slightly operating in either the left or right direction, it is included in the concept of “push-in”.

  In short, in relation to the main purpose of the present invention, unless it is evaluated that it is necessary to turn the required amount in order to lock and unlock the storage case, even if it is turned slightly for the switching operation, "essential matter of the invention" Will not change.

  It should be noted that the return spring 20 of this embodiment has the effect of the invention that the storage case is automatically returned to the initial position when the key body K is rotated in both the unlocking direction and / or the locking direction. In this relationship, it is a specific requirement of the present invention.

  The present invention is mainly used in the locksmith and joinery industries.

1 to 5 are explanatory views showing the best embodiment of the present invention. FIG. 6 shows a second embodiment of the present invention.
The disassembled perspective view of 1st Example. Schematic explanatory diagram of the main part, The schematic explanatory drawing of the state which put the return spring and the key main body in the case main body. The schematic cross-section explanatory drawing of the state which combined the structural member. Explanatory drawing of an effect | action. Schematic explanatory drawing of 2nd Example.

Explanation of symbols

X, X1 ... key, K ... key body, 2 ... blade part (blade piece), 1 ... cam, 1a ... tip end surface, 1b ... cylindrical outer surface, 1c ... rear end surface (one side outer surface), 3 ... cam engagement Joint part, 10, 10A ... storage case, 10a ... case main body, 10b ... locking means, 4, 4A ... control guide part, 20 ... return spring, 21 ... sliding piece, a ... lock, b ... keyhole.

Claims (7)

A key body having a cam engaging portion on the outer surface of the columnar cam and a blade portion on the front end surface; and a storage case having a curved control guide portion engaging with the cam engaging portion and engaging with the cam engaging portion. Key for lock consisting of. 3. The locking means 10b of any one of a cap shape, a front wall annular shape, and a protrusion shape is provided at an end of the storage case so that the key body 1 is not detached from the storage case 10. Key for lock. 2. The key for locking according to claim 1, wherein the storage case includes a return spring 20 between the inner surface of the storage case and the outer surface of the cam. In claim 1, when the blade portion of the key body is inserted into the key hole of the lock and the storage case 10 is pushed in with a finger, the key body K is slidably connected by the cam engagement portion 3 and the control guide portion 4. And the key for the door lock characterized by rotating in the unlocking direction in conjunction with the horizontal movement of the storage case 10. 2. The key for locking according to claim 1, wherein the columnar cam 1 and the blade portion 2 of the key body are integrally formed. 2. The key for locking according to claim 1, wherein the key body includes a columnar cam 1 and a blade piece 2 that can be inserted into an engaging groove of the cam 1. In claim 1, the control guide portion 4A formed in either the cam or the storage case is formed symmetrically so that the key body can be rotated in both the unlocking direction and the locking direction. A key for locks.

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