Lock cylinder with adjustable length

Abstract

The utility model discloses a length-adjustable lock cylinder which comprises a lock cylinder body, the lock cylinder body comprises a lock shell, a lock container and a lock container rotating shaft, the lock container rotating shaft is provided with a connecting mechanism for manual or electric unlocking, and the lock cylinder further comprises a first lock shell lengthening part and a lock container lengthening part. The first lock shell lengthening part and the lock container lengthening part are detachably arranged at the end, where a key is inserted, of the lock cylinder body, the lock shell is provided with a first fixing part used for fixing the first lock shell lengthening part, and the first fixing part comprises a fixing groove and a fixing hole. The first lock shell lengthening part is provided with an inserting piece matched with the fixing groove and a fixing column matched with the fixing hole. A concave hole used for fixing the lock cylinder lengthening part is formed in the lock cylinder at the end, where a key is inserted, of the lock cylinder body, the lock cylinder lengthening part is provided with a convex column matched with the concave hole, and an installation hole used for containing the lock cylinder lengthening part is formed in the first lock shell lengthening part. The lock cylinder of the structure is easy to machine, low in production cost, convenient to install or replace, long in service life and firm.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a lock core with adjustable length. Background Art

[0002] The CN218668909U Chinese utility model patent published on March 21, 2023 discloses a lock core with adjustable length, including a front lock body, a rear lock body, a dial head and an extension component, wherein the extension component includes a plurality of extension plugs, the extension plugs are arranged between the front lock body and the dial head and / or between the rear lock body and the dial head, and also includes a rotating shaft, the extension plug is installed on the rotating shaft, and the rotating shaft is formed by connecting a plurality of fillers, the fillers are arranged between the front lock gall of the front lock body and the dial head and / or between the rear lock gall of the rear lock body and the dial head, and the number of the fillers is adapted to the number of the extension plugs. The length of the lock core is adjusted so that the lock core is adapted to applications in different scenarios. And the rotating shaft is formed by connecting a plurality of fillers, replacing the fixed length of the existing rotating shaft, so as to adapt to the setting of different numbers of extension plugs, and also by setting a corresponding number of fillers to adapt, so as to facilitate the adjustment of the length of the lock core. The lock core of this structure is divided into a front lock body and a rear lock body. The length of the lock core is adjusted by inserting an extension component between the front lock body and the rear lock body. On the one hand, this structure is more complicated and has a high production cost. On the other hand, it is not convenient to install or replace it. Each time, the lock core needs to be disassembled and the extension component needs to be replaced. On the other hand, the lock core is easily damaged during multiple replacements, which affects the life of the lock core. In addition, when adjusting the length, multiple extension components may be added, which not only affects the appearance, but also affects the firmness of the lock core. Therefore, the structure of the adjustable length lock core in the prior art needs to be further improved. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a lock core of an adjustable length lock which is simple to process, low in production cost, convenient to install or replace, long in service life, and firm.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] The lock core of claim 1, wherein the lock core comprises a lock core body, the lock core body comprising a lock shell, a lock core and a lock core rotating shaft, the lock core having a keyhole for inserting a key, and the lock core rotating shaft having a connecting mechanism for manual or electric unlocking, characterized in that the lock core also comprises a first lock shell extension portion and a lock core extension portion, the first lock shell extension portion and the lock core extension portion being detachably arranged on one end of the lock core body for inserting a key, the lock shell being provided with a first fixing portion for fixing the first lock shell extension portion, the first fixing portion comprising a fixing groove and a fixing hole, the first lock shell extension portion being provided with a plug-in unit matching with the fixing groove and a fixing column matching with the fixing hole; a concave hole for fixing the lock core extension portion is provided on the lock core body at one end for inserting a key, the lock core extension portion being provided with a convex column matching with the concave hole, and a mounting hole for placing the lock core extension portion is provided on the first lock shell extension portion.

[0006] Furthermore, the fixing groove is located on the side surface of the lock housing, and the cross-sectional shape of the fixing groove is an open trapezoid. Correspondingly, the cross-sectional shape of the plug-in is a trapezoid.

[0007] Furthermore, the fixing hole is a circular hole, and correspondingly, the fixing column is cylindrical.

[0008] Furthermore, there are two recessed holes, and correspondingly, there are also two protruding columns.

[0009] Furthermore, a center line of the fixing groove along the X direction and a center line of the fixing hole along the X direction are on the same plane.

[0010] Furthermore, a first step is provided on the extended portion of the lock core, and a second step matching the first step is provided on the inner wall of the mounting hole of the extended portion of the first lock shell.

[0011] Furthermore, it also includes a second lock shell extension portion, which is detachably arranged on the lock shell at one end of the connecting mechanism.

[0012] Furthermore, a screw hole is provided on the lock shell at one end of the connecting mechanism, and a through hole is also provided at a corresponding position of the second lock shell extension part, and the second lock shell extension part is fixed to the lock shell by screws.

[0013] The beneficial effects of the utility model are as follows: relative to the prior art, the extension component is arranged at one end or both ends of the lock core body, and when adjusting the length, it is only necessary to add or replace a longer or shorter extension component without disassembling the lock core, and the number of parts that need to be disassembled or installed when adding or replacing is less than that of the prior art, so the structure is simple, the production cost is low, the operation is more convenient, and the lock core after installation maintains its beauty and firmness, and the life of the lock core can also be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is an exploded schematic diagram of an implementation method of the utility model;

[0016] Figure 2 yes Figure 1 a right side view of the structure shown;

[0017] Figure 3 yes Figure 1 a left side view of the structure shown;

[0018] Figure 4 is a structural schematic diagram of the first lock housing extension;

[0019] Figure 5 yes Figure 2 AA section view. DETAILED DESCRIPTION

[0020] See also Figures 1 to 5 , showing an embodiment of the utility model, including a lock core body 1, the lock core body including a lock shell 11, a lock core 12, a lock core shaft 13, a first lock shell extension 2 and a lock core extension 3, the lock core 12 having a keyhole 121 for inserting a key, the lock core shaft 13 having a connecting mechanism 131 for manual or electric unlocking, a first fixing portion for fixing the first lock shell extension 2 is provided on the lock shell 11 at one end of the lock core body 1 for inserting a key, the first fixing portion including a fixing groove 111 and a fixing hole 112, the first lock shell extension 2 is provided with a plug-in 21 matching with the fixing groove 111 and a fixing column 22 matching with the fixing hole 112; a concave hole 122 for fixing the lock core extension 3 is provided on the lock core 11 at one end of the lock core body 1 for inserting a key, the lock core extension 3 is provided with a convex column 31 matching with the concave hole 122, as a preferred embodiment, there are two concave holes 122, and correspondingly, there are also two convex columns 31. The lock core extension part 3 is provided with a key hole 32 corresponding to the key hole 121. The first lock shell extension part 2 is provided with a mounting hole 23 for placing the lock core extension part 3. During assembly, the lock core extension part 3 is placed in the mounting hole 23. The lock core extension part 3 is provided with a first step 33, and the inner wall of the mounting hole 23 of the first lock shell extension part 2 is provided with a second step 24 that matches the first step 33.

[0021] In order to reduce the difficulty of processing, the fixing groove 111 is located on the side surface of the lock housing 11. In order to increase the firmness of the matching between the fixing groove 111 and the plug-in 21, the cross-sectional shape of the fixing groove 111 is an open trapezoid. Correspondingly, the cross-sectional shape of the plug-in 21 is a trapezoid. The outer side of the trapezoidal plug-in 21 is shorter than the inner side. The advantages of this structure are that, on the one hand, the gap between the fixing groove 111 and the plug-in 21 can be very small, and on the other hand, since the inner side of the plug-in 21 is longer, the plug-in 21 is more firmly stuck in the fixing groove.

[0022] In order to further reduce the difficulty of processing, the fixing hole 112 is a circular hole, and correspondingly, the fixing column 22 is cylindrical.

[0023] The center line of the fixing groove 111 along the X direction coincides with the center line of the fixing hole 112 along the X direction. Figure 2 As shown, when the lock core is placed in this direction, the fixing groove 111 and the fixing hole 112 are at the same height. This structure is conducive to the first lock shell extension part 2 being fixed on the lock shell 11 to be more balanced and stable.

[0024] The utility model may also include a second lock housing extension 4, which is detachably arranged on the lock housing 11 at one end of the connecting mechanism 122. A screw hole 113 is arranged on the lock housing 11 at one end of the connecting mechanism 131, and a through hole 41 is also arranged at a corresponding position of the second lock housing extension 4. The second lock housing extension 4 is fixed to the lock housing 11 by screws 5. The second lock housing extension 4 is provided with a mounting hole 42 for placing the connecting mechanism 131. The lock core of this structure can be extended at the other end to increase the flexibility of adjustment.

[0025] The thickness of the first lock shell extension part 2 and the lock core extension part 3 can be thick or thin. The manufacturer can provide multiple sets of first lock shell extension parts 2 and lock core extension parts 3 of different thicknesses. When adding or replacing, only one set of suitable extension parts needs to be added or replaced, which is much easier to operate than the prior art that requires disassembly and assembly of multiple parts. Similarly, the second lock shell extension part 4 can also provide multiple parts of different thicknesses to meet the needs of flexible adjustment.

[0026] The directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” herein are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0027] The above implementation methods cannot limit the protection scope of the present utility model. Any changes in equivalent technical means made by technicians in this technical field without departing from the overall concept of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A lock core with adjustable length, comprising a lock core body (1), the lock core body comprising a lock shell (11), a lock core (12) and a lock core rotating shaft (13), the lock core (12) having a key hole (121) for inserting a key, the lock core rotating shaft (13) having a connecting mechanism (131) for manual or electric unlocking, characterized in that: The lock core further comprises a first lock shell extension portion (2) and a lock core extension portion (3), wherein the first lock shell extension portion (2) and the lock core extension portion (3) are detachably arranged at one end of the lock core body (1) for inserting a key, and the lock shell (11) is provided with a first fixing portion for fixing the first lock shell extension portion (2), wherein the first fixing portion comprises a fixing groove (111) and a fixing hole (112), and the first lock shell extension portion (2) is provided with a fixing groove (111) and a fixing hole (112). 11) and a fixing column (22) matching with the fixing hole (112); the lock core (12) at one end of the lock core body (1) for inserting the key is provided with a recessed hole (122) for fixing the lock core extension part (3), the lock core extension part (3) is provided with a convex column (31) matching with the recessed hole (122), and the first lock shell extension part (2) is provided with a mounting hole (23) for accommodating the lock core extension part (3).

2. The length-adjustable lock cylinder according to claim 1, characterized in that The fixing groove (111) is located on the side surface of the lock housing (11), and the cross-sectional shape of the fixing groove (111) is an open trapezoid. Correspondingly, the cross-sectional shape of the plug-in unit (21) is a trapezoid.

3. The length-adjustable lock cylinder according to claim 2, characterized in that The fixing hole (112) is a circular hole, and correspondingly, the fixing column (22) is cylindrical.

4. The length-adjustable lock cylinder according to claim 1, characterized in that There are two recessed holes (122), and correspondingly, there are also two protruding columns (31).

5. The length-adjustable lock cylinder according to claim 3, characterized in that The center line of the fixing groove (111) along the X direction and the center line of the fixing hole (112) along the X direction are on the same plane.

6. The length-adjustable lock cylinder according to claim 1, characterized in that The lock core extension portion (3) is provided with a first step (33), and the inner wall of the mounting hole (23) of the first lock shell extension portion (2) is provided with a second step (24) matching with the first step (33).

7. The length-adjustable lock cylinder according to claim 1, characterized in that It also includes a second lock housing extension portion (4) which is detachably arranged on the lock housing (11) at one end of the connecting mechanism (131).

8. The length-adjustable lock cylinder according to claim 7, characterized in that A screw hole (113) is provided on the lock shell (11) at one end of the connecting mechanism (131), and a through hole (41) is also provided at a corresponding position of the second lock shell extension portion (4), and the second lock shell extension portion (4) is fixed to the lock shell (11) by means of a screw (5).

Images