CN211144031U - Key structure - Google Patents

Abstract

The utility model provides a key structure, which is provided with a metal key blank, the positions of the key blank corresponding to each locking plate or each locking column in the lock core of the lock are provided with grooves, the upper end part of the key blank is filled with a key handle made of plastic material, a positioning sleeve body is sleeved on the key blank and the key handle of the key, the positioning sleeve body is made of plastic material and is provided with a concave chamber, the lower end of the positioning sleeve body is provided with a limiting convex body, a perforation communicated with the concave chamber is arranged in the limiting convex body, the limiting convex body is covered on one part of the key blank, the exposed length of the key blank is equal to the depth inserted into the key hole of the lock core, and by means of the arrangement of the positioning sleeve body, the limiting convex body can be blocked and held on the outer wall surface of the lock core, the depth of the key inserted into the key hole is positioned, so that each groove on the key blank is accurately aligned to each locking column position or each locking column position in the lock core, the damage of the lock core structure caused by the misalignment of the grooves of the key can be prevented.

Description

Key structure

Technical Field

The utility model relates to a key structure that can supply the key to insert and establish accurate location in the lock core of tool to lock.

Background

Referring to fig. 1, a general key 1 is mainly provided with a metal key blank 10, a groove 100 corresponding to each locking plate or locking cylinder in a lock core 21 is formed in the key blank 10, and a key handle 11 made of plastic is poured on the upper end of the key blank 10; when the key 1 is used to unlock the lock, the key 1 is inserted into the keyhole 210 of the lock core 21 on the lock 20, so that the key blank 10 of the key 1 is inserted to the correct position aligned with each lock plate or each lock cylinder (the interior of the lock core is the existing structure, not shown), and then the lock core 21 can be rotated to unlock the lock; however, the conventional key has no design of positioning structure, when the lock is unlocked, the key blank 10 of the key 1 is inserted to the bottom (i.e. the end of the key blank 10 abuts against the inner bottom surface of the lock cylinder 21), and if the user does not insert the key blank 10 to the correct position, i.e. rotate the key 1, the lock plate or the lock cylinder in the lock cylinder 21 is locked and cannot rotate, so the key 1 needs to be pulled out and then inserted again for unlocking, and the lock plate or the lock cylinder is deformed and locked and cannot be unlocked after long-term incorrect use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a key structure, can effectively solve the disappearance that exists when current key is unblanking in inserting the lock core of establishing into the tool to lock and is used.

In order to achieve the above object, the utility model adopts the following technical scheme:

a key structure is mainly provided with a metal key blank, grooves are arranged on the key blank corresponding to the positions of locking plates or locking columns in a lock core of a lockset, and a key handle made of plastic materials is poured at the upper end part of the key blank;

the method is characterized in that: the positioning sleeve body is sleeved on the key blank and the key handle of the key, the positioning sleeve body is made of plastic materials, the positioning sleeve body is provided with a concave chamber, a part of the key handle is arranged in the concave chamber, a limiting convex body is arranged below the positioning sleeve body, a through hole communicated with the concave chamber is arranged in the limiting convex body, and the limiting convex body is coated on a part of the key blank, so that the exposed length of the key blank is equal to the depth of the key blank inserted into the key hole of the lock core.

The utility model discloses a key structure, its advantage lies in: the depth of the key inserted into the lockset can be accurately positioned, and the damage of the lock core structure caused by the misalignment of all the grooves of the key can be prevented.

Drawings

Fig. 1 is a perspective view of a conventional key inserted into a lock.

Fig. 2 is an exploded perspective view of an embodiment of the present invention.

Fig. 3 is a perspective combination view of the embodiment of the present invention.

Fig. 4 is a combined cross-sectional view of an embodiment of the present invention.

Fig. 5 is a schematic usage diagram of an embodiment of the present invention.

Description of reference numerals: 1, a key; 10 key blanks; 100 grooves; 11 a key handle; 20 a lock; 21, a lock core; 210 a keyhole; 3, positioning the sleeve body; 30 concave chambers; 31 limiting convex body; 32 punching holes; a length of exposure.

Detailed Description

In order to achieve the above objects and advantages, the present invention provides a practical and preferred embodiment, which is shown in the accompanying drawings and detailed as follows:

in the embodiment of the present invention, please refer to fig. 2, the key 1 is mainly provided with a metal key blank 10, a groove 100 is formed on the key blank 10 corresponding to each locking plate or each locking post in the lock core of the lock, and a plastic key handle 11 is filled at the upper end of the key blank 10; a positioning sleeve 3 covering the key blank 10 and the key handle 11 of the key 1, the positioning sleeve 3 being made of plastic material, the positioning sleeve 3 having a concave chamber 30, the concave chamber 30 being provided for a portion of the key handle 11, a position-limiting protrusion 31 being provided below the positioning sleeve 3, a through hole 32 communicating with the concave chamber 30 being provided in the position-limiting protrusion 31, the position-limiting protrusion 31 being covered on a portion of the key blank 10, such that an exposed length a (as shown in fig. 4) of the key blank 10 is equal to a depth of insertion into a keyhole of a lock core, thereby forming a key structure.

When in use, please refer to fig. 3 to 5, firstly, the positioning sleeve 3 is sleeved on the key 1, so that the positioning sleeve 3 is sleeved on the key blank 10 and the key handle 11 of the key 1 (as shown in fig. 3 and 4), and the position-limiting protrusion 31 of the positioning sleeve 3 is covered on a part of the key blank 10, so that the exposed length a of the key blank 10 is equal to the depth of the key hole 210 inserted into the lock core 21 of the lock 20, thus, by means of the arrangement of the positioning sleeve 3 on the key 1, when the key 1 is inserted into the key hole 210 of the lock core 21 of the lock 20, the position-limiting protrusion 31 can be retained on the outer wall surface of the lock core 21 (as shown in fig. 5), the depth of the key 1 inserted into the key hole 210 is positioned, and the grooves 100 on the key blank 10 are accurately aligned with the positions of the lock plates or the lock cylinders in the lock core 21, thereby preventing the lock plates or the lock cylinders of the lock core 21 from being damaged when the grooves 100 of the key 1 are not aligned with each other groove; the utility model discloses on the key 1 is located to 3 covers of this position sleeve body, can inject the length a that exposes of key 1, make its spacing convex body 31 further inject key 1 and insert the degree of depth of establishing into key hole 210 to reach each slot 100 on the key 1 and obtain the accurate position of being in each locking plate or each lock post in the lock core 21 well, make to unblank can not lead to the fact locking plate or the condition of lock post deformation damage to take place because of not just in place rotating the lock core 21 well.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (1)

1. A key structure is mainly provided with a metal key blank, grooves are arranged on the key blank corresponding to the positions of locking plates or locking columns in a lock core of a lockset, and a key handle made of plastic materials is poured at the upper end part of the key blank;

the method is characterized in that: the positioning sleeve body is sleeved on the key blank and the key handle of the key, the positioning sleeve body is made of plastic materials, the positioning sleeve body is provided with a concave chamber, a part of the key handle is arranged in the concave chamber, a limiting convex body is arranged below the positioning sleeve body, a through hole communicated with the concave chamber is arranged in the limiting convex body, and the limiting convex body is coated on a part of the key blank, so that the exposed length of the key blank is equal to the depth of the key blank inserted into the key hole of the lock core.

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