Built-in insert type lock cylinder mechanism of handle plane lock

Abstract

The utility model relates to a built-in insert type lock cylinder mechanism of a handle plane lock, which is designed aiming at solving the technical problems of more complex design, higher production cost and lower anti-theft effect of the lock cylinder mechanism of the existing similar products. A bottom cover is arranged at an opening hole in one end of a lock body of the lock cylinder mechanism, and a latch extends out of the connecting position under the action of a spring. The anti-theft lock is characterized in that a limiting piece embedded and fixed in a hole opening in the lock body is arranged at the hole opening in one side of the lock body at the connecting position of the bottom cover and the lock body, a lock blocking piece with one side edge fixed to the inner wall of the lock body is arranged on one side of the limiting piece, a blocking piece concave-convex outline is arranged on the other side edge of the lock blocking piece, and a latch below the blocking piece concave-convex outline is provided with a limiting column corresponding to a protrusion; when the key is inserted into the key hole of the lock body, the tooth concave-convex outline of the key is correspondingly matched with the catch concave-convex outline of the lock catch, and after the key crosses the catch concave-convex outline of the lock catch, the protrusion on one side of the end of the key in the lock body abuts against the limiting column of the latch, and the key continues to rotate to drive the latch to move downwards and retract into the lock body.

Description

Technical Field

[0001] The utility model relates to a handle flat lock in the field of mobile communication devices, and is an inlaid insert type lock core mechanism inside a handle flat lock. Background Art

[0002] The handle flat lock is a door lock with a handle in the electrical cabinet door locks of products such as mobile communication devices. Such electrical cabinets are generally made of steel to protect the normal operation of components, and this type of door lock is required to prevent it from being opened randomly. The handle flat locks currently used in the industry generally include a base, a handle, a rotating shaft and a steel bolt assembly. The base is provided with a lock core assembly and a button assembly for locking the handle, or a lug plate extending out of the handle lug hole for fixing the handle in the base to prevent the handle from being opened. For example, the application number disclosed in the Chinese patent document is 202010343762.7, the application publication date is August 14, 2020, and the invention name is "Flat Lock of Lock Core Pressure Plate Assembly"; the handle flat locks of the above products and similar products generally use a conventional blade lock core assembly, which has more parts and is used in more occasions with low anti-theft requirements. When the lock core rotates, the bolt is directly or indirectly translated by the pin protruding from the bottom to achieve unlocking. Summary of the Invention

[0003] To overcome the above deficiencies, the purpose of the present utility model is to provide a handle flat lock inlaid insert type lock core mechanism with a new anti-destruction unlocking method of concave-convex contour tooth pattern to the field, so as to solve the technical problems of the lock core mechanism design of existing similar products being relatively complex, the production cost being relatively high, and the anti-theft effect being relatively low. The purpose is achieved through the following technical solutions.

[0004] A built-in insert type lock core mechanism for a handle flat lock. At the opening hole at one end of the lock body of the lock core mechanism, a bottom cover is provided. In the opening groove on one side of the bottom cover at the connection between the bottom cover and the lock body, there is a bolt that extends out under the action of a spring in the bottom cover groove. The spring column protruding from the bottom of one side of the protruding end of the bolt is inserted into the groove of the bottom cover and abuts against the spring in the bottom cover groove. The key design point of its structure is that at the orifice on one side of the lock body at the connection between the bottom cover and the lock body, there is a limit piece embedded and fixed at the orifice of the lock body. On one side of the limit piece, there is a lock blocking piece with one side edge fixed to the inner wall of the lock body. On the other side edge of the lock blocking piece, there is a concave-convex contour of the blocking piece. Below the concave-convex contour of the blocking piece, the bolt is provided with a corresponding protruding limit post. When the key is inserted into the keyhole of the lock body, the tooth profile of the key corresponds and matches with the concave-convex contour of the blocking piece of the lock blocking piece. The key rotates to make the tooth profile of the key cross over the concave-convex contour of the blocking piece of the lock blocking piece, and the convex part on one side of the end of the key in the lock body abuts against the limit post of the bolt. The key continues to rotate to drive the bolt to move downward and retract into the lock body, thus realizing unlocking. When the key is released, the spring drives the key and the bolt to reset. When the tooth profile of the key does not match the concave-convex contour of the blocking piece of the lock blocking piece, the key is blocked by the lock blocking piece and cannot rotate. The lock blocking piece in the above lock body is not limited to being arranged at the oblique end angle in the lock body. The space in this position in the lock body is utilized more reasonably and occupies less space. The above new unlocking method improves its anti-theft effect.

[0005] Inside the keyhole on the other end of the lock body, there is a dust-proof cover placed through the opening hole at one end of the lock body. The shaft pin on one side of the dust-proof cover is placed through the opening on one side of the lock body and is provided with a torsion spring. At the opening of the lock hole shaft pin, the lock body is provided with a shaft block for encapsulating the opening and fixing the shaft pin. The above design of the built-in dust-proof structure improves its stability and makes the appearance more beautiful.

[0006] The limit piece in the lock body is provided with a protruding positioning post. When the key is inserted into the keyhole of the lock body, the positioning hole at one end of the key sleeve fits with the positioning post of the limit piece. The above structure improves the stability of the key rotation after insertion and makes the torsion of the key rotation more stable.

[0007] At the bottom of the convex part on one side of the end of the key in the lock body, the bottom cover is provided with a protruding triangular column. The triangular column is integrally arranged on the plane of the edge of one side of the opening groove of the bottom cover. When the bottom cover is installed on the lock body by screws, one end of the limit piece in the lock body is limited and abuts against the triangular column of the bottom cover. The above structure further improves the stability of the lock blocking piece in the lock body.

[0008] The keyhole of the lock body is the lock core hole on the outside of one end of the integrated handle, and the lock body is integrally formed with the integrated handle. The above is a specific structural embodiment of the lock core mechanism at the handle of the handle flat lock.

[0009] The structure design of the utility model is simple and reasonable, with low production cost, unique use and operation, and great popularization and application value; it is suitable for use as an insert - type lock core mechanism inside the handle - type flat lock, as well as the structural improvement of similar products. Brief Description of the Drawings

[0010] Figure 1 Fig. is an exploded structural schematic diagram of an embodiment of the utility model, in which structures such as the handle - type flat lock base are omitted.

[0011] Figure 2 is Figure 1 the three - dimensional structural schematic diagram after assembly.

[0012] Figure 3 is Figure 2 the sectional structural schematic diagram at the lock body.

[0013] Figure 4 is Figure 3 the internal structural schematic diagram at the lock body. The dotted lines in the figure are the internal structures, and the dust cover and corresponding components are omitted.

[0014] Figure 5 is Figure 4 the internal structural schematic diagram after the key is pulled out. The dotted lines in the figure are the internal structures.

[0015] Reference Numerals and Names of the Drawings: 1. Integrated handle, 101. Lock core hole, 2. Lock retaining piece, 3. Bolt, 301. Limit post, 4. Bottom cover, 401. Triangular post, 5. Spring, 6. Limit piece, 601. Positioning post, 7. Dust cover, 8. Torsion spring, 9. Axle pin, 10. Axle block, 11. Key. Embodiment

[0016] Now, in combination with the drawings, the structure and use of the utility model will be further described. As Figures 1-5As shown in the figure, a bottom cover 4 is provided at the opening hole at one end of the lock body of the lock core mechanism. A latch 3 with one end extending out is provided in the opening groove on one side of the bottom cover at the connection between the bottom cover and the lock body. The spring column protruding from the bottom of one side of the protruding end of the latch is inserted into the groove of the bottom cover and abuts against the spring in the groove of the bottom cover. A limit piece 6 embedded and fixed at the orifice of the lock body is provided at the orifice on one side of the lock body at the connection between the bottom cover and the lock body. A lock stop piece 2 with one side edge fixed to the inner wall of the lock body is provided on one side of the limit piece. The other side edge of the lock stop piece is provided with a concave-convex contour of the stop piece. A corresponding protruding limit column 301 is provided on the latch below the concave-convex contour of the stop piece. When the key 11 is inserted into the keyhole of the lock body, the tooth profile of the key corresponds to and matches the concave-convex contour of the lock stop piece. The key rotates to make the tooth profile of the key cross over the concave-convex contour of the lock stop piece, and the protrusion on one side of the end of the key in the lock body abuts against the limit column of the latch. The key continues to rotate to drive the latch to move downward and retract into the lock body. A dust cover 7 is provided inside the keyhole at the other end of the lock body and is placed through the opening hole at one end of the lock body. A pin 9 on one side of the dust cover is placed through the opening on one side of the lock body and is provided with a torsion spring 8. An axle block 10 for encapsulating the opening and fixing the pin is provided on the lock body at the opening of the lock hole pin.

[0017] At the same time, a protruding positioning column 601 is provided on the limit piece in the lock body. When the key is inserted into the keyhole of the lock body, the positioning hole at one end of the key is sleeved with the positioning column of the limit piece. A protruding triangular column 401 is provided on the bottom cover at the protruding part on one side of the end of the key in the lock body. The triangular column is integrally arranged on the plane of the edge of the opening groove on one side of the bottom cover. When the bottom cover is installed on the lock body by screws, one end of the limit piece in the lock body is internally limited and abuts against the triangular column of the bottom cover. The keyhole of the lock body is the lock core hole 101 on the outer side of one end of the integrated handle 1, and the lock body and the integrated handle are integrally formed.

[0018] During use, the key is inserted into the lock core hole of the integrated handle, and the key is rotated to drive the latch to move and disengage from the lock groove in the base of the corresponding handle plane lock, and the handle can be taken out from the base of the corresponding handle plane lock for use.

[0019] To sum up, the insert lock core of this lock core mechanism borrows the structure of ancient Chinese bronze locks and utilizes the principle of matching the key and the profile of the stop piece. Therefore, it has fewer parts, lower cost, and better anti-theft performance. The lock core mechanism meets the following specific functional requirements: 1) After the key is inserted, the key is limited by the limit piece and the handle, and the key rotates around the limit point of the limit piece. 2) The outer contour of the key and the outer contour of the lock stop piece match each other. When the contours do not match, the key is blocked by the lock stop piece and cannot rotate; when the contours match, the convex point of the key crosses the groove of the lock stop piece and rotates, thereby driving the latch to move. 3) The tooth pattern diagram of the key is five, and it can be made more or less according to actual requirements. Generally, existing locks have 2-6 tooth patterns, and the lock core can achieve this.

Claims

1. A handle flat lock with a built-in insert-type lock core mechanism, wherein a bottom cover (4) is provided at an opening hole at one end of a lock body of the lock core mechanism, and a latch (3) is provided in an opening groove on one side of the bottom cover where the bottom cover is connected to the lock body, and one end of the latch is extended by a spring (5) in the groove of the bottom cover; characterized in that A stopper (6) is provided at the hole of one side of the lock body where the bottom cover (4) is connected to the lock body and is embedded in the hole of the lock body. A lock stopper (2) is provided on one side of the stopper, and a stopper concave-convex contour is provided on the other side of the stopper. A corresponding raised stopper column (301) is provided on the latch (3) below the stopper concave-convex contour. When the key (11) is inserted into the keyhole of the lock body, the key's tooth concave-convex contour corresponds to the stopper concave-convex contour of the lock stopper. The key is rotated so that the key's tooth concave-convex contour passes over the stopper concave-convex contour of the lock stopper, and a protrusion on one side of the key end of the lock body abuts against the stopper column of the latch. The key continues to rotate to drive the latch to move downward and retract into the lock body.

2. The handle flat lock with built-in insert-type lock cylinder mechanism according to claim 1, characterized in that A dust cover (7) is provided inside the key hole at the other end of the lock body and is inserted through an opening hole at one end of the lock body. An axle pin (9) on one side of the dust cover is inserted through an opening hole at one side of the lock body and is provided with a torsion spring (8). At the opening of the key hole pin shaft, the lock body is provided with an axle block (10) for encapsulating the opening and fixing the axle pin.

3. The handle flat lock with built-in insert-type lock cylinder mechanism according to claim 1, characterized in that The locking plate (6) in the lock body is provided with a raised positioning column (601), and when the key (11) is inserted into the key hole of the lock body, the positioning hole at one end of the key fits into the positioning column of the locking plate.

4. The handle flat lock with built-in insert-type lock cylinder mechanism according to claim 1, characterized in that A raised triangular column (401) is provided on the bottom cover (4) at a raised position on one side of the end of the key (11) in the lock body, and the triangular column is integrally arranged on the edge plane of the notch on one side of the opening groove of the bottom cover; when the bottom cover is mounted on the lock body by screws, the inner side of one end of the limiting plate (6) in the lock body is limitedly pressed against the triangular column of the bottom cover.

5. The handle flat lock with built-in insert-type lock cylinder mechanism according to claim 1, characterized in that The key hole of the lock body is a lock core hole (101) outside one end of the integrated handle (1), and the lock body and the integrated handle are integrally formed.

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