Combined lock

Abstract

The utility model discloses a combined lock head which comprises a first lock block, a second lock block and a lock wheel which are arranged in a split mode. The first locking block and the second locking block are connected through a clamping structure and a connecting block; the first locking block comprises a first front wall, a first upper wall, a first lower wall and a first inner side wall, the second locking block comprises a second front wall, a second upper wall, a second lower wall and a second inner side wall, the first upper wall and the second upper wall are both horizontal walls and are flush with each other to form a first locking surface, and the first lower wall and the second lower wall are both horizontal walls and are flush with each other to form a second locking surface. The first front wall and the second front wall are vertical walls and are flush to form a second lock face together, and the first front wall and the second front wall are vertical walls and are flush to form a third lock face together. The first inner side wall and the second inner side wall are oppositely arranged, a rotating shaft is vertically arranged between the first inner side wall and the second inner side wall; the outer peripheral surface of the lock wheel protrudes out of the first lock surface, the second lock surface and the third lock surface. The lock head disclosed by the utility model is labor-saving in locking, not easy to clamp and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of locks, and in particular relates to a combined lock. Background Art

[0002] The lock head is an important component of the lock. The opening and closing mechanism in the lock realizes the unlocking and locking of the lock by controlling the extension and retraction of the lock head. To ensure the safety of the lock, most of the existing lock heads are integrated square lock heads. When entering the lock slot, the friction is large, which makes locking difficult. After the lock is used for a long time, the lock head and the lock slot will produce a certain displacement. The square lock head has poor adaptability. During the unlocking and locking process, a small misalignment between the lock head and the lock slot will cause jamming. Summary of the invention

[0003] The utility model provides a combined lock to solve the problems of the lock being difficult to lock and easy to get stuck in the prior art. The invention objective of the utility model is achieved through the following technical solutions:

[0004] A combined lock head, comprising a first locking block, a second locking block, and a locking wheel which are separately arranged; a connecting block is provided between the first locking block and the second locking block, a first clamping structure which cooperates with each other is provided on the connecting block and the first locking block, and a second clamping structure which cooperates with each other is provided on the connecting block and the second locking block; the first locking block comprises a first front wall, a first upper wall, a first lower wall, and a first inner side wall, and the second locking block comprises a second front wall, a second upper wall, a second lower wall, and a second inner side wall, wherein the first upper wall and the second upper wall are both horizontal walls, and are flush with each other to form a first locking surface, the first lower wall and the second lower wall are both horizontal walls, and are flush with each other to form a second locking surface, and the first front wall and the second front wall are both vertical walls, and are flush with each other to form a third locking surface; the first inner side wall and the second inner side wall are arranged opposite to each other, a rotating shaft is vertically arranged between the two, and the locking wheel is rotatably assembled on the rotating shaft; the outer peripheral surface of the locking wheel protrudes from the first locking surface, the second locking surface, and the third locking surface.

[0005] Preferably, the first locking block, the second locking block and the connecting block jointly define a U-shaped groove with an opening facing forward, and the rotating shaft and the locking wheel are arranged in the U-shaped groove; the rotation center of the locking wheel is located on the vertical midline of the first locking block and the second locking block.

[0006] Preferably, the connecting block body is a rectangular block, and the first clamping structure includes a first clamping block protruding from the first side wall of the connecting block, and a first clamping groove recessed on the first inner wall; the second clamping structure includes a second clamping block protruding from the second side wall of the connecting block, and a second clamping groove recessed on the second inner wall.

[0007] Preferably, the first card block and the second card block are both dovetail card blocks, and the first card slot and the second card slot are both dovetail card slots; and the first card slot and the second card slot both include an open end and a closed end, the open end of the first card slot is located at the tail end of the first inner side wall, and the open end of the second card slot is located at the tail end of the second inner side wall.

[0008] Preferably, the upper end surface of the connecting block is flush with the first locking surface, and the lower end surface of the connecting block is flush with the second locking surface.

[0009] Preferably, the lengths of the connecting block, the first clamping block, the second clamping block, the first clamping slot and the second clamping slot in the extension and retraction direction of the lock head are consistent.

[0010] Preferably, a first slot for inserting a support plate is provided in the first locking block, and a second slot for inserting a support plate is provided in the second locking block, and the openings of the first slot and the second slot are both rearward facing.

[0011] Preferably, the first locking block further includes a first outer side wall, and the second locking block further includes a second outer side wall, and both the first outer side wall and the second outer side wall are provided with chamfered arc surfaces.

[0012] Compared with the prior art, the utility model has the following technical effects: the combined lock head is composed of a lock block and a lock wheel. The setting of the lock wheel can make the lock head enter the lock groove in a rolling form, which greatly reduces the friction between the lock head and the lock groove, and makes locking more labor-saving. Square lock blocks are arranged on both sides of the lock wheel, and the safety of the square lock head is also combined; the position and size of the lock wheel are reasonably set, so that the first lock surface, the second lock surface and the third lock surface of the lock head are all in a suspended state. When the lock is frequently used and the lock head and the lock groove are misaligned to a certain extent, the combined lock head can achieve self-adaptation through the lock wheel to avoid jamming; the combined lock head adopts a split structure, with low production cost and simple and quick assembly method; the setting of the connecting block realizes the rapid assembly of the lock head and can effectively improve the structural strength of the lock head. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the utility model without the lock wheel structure;

[0015] Figure 3 This is a schematic diagram of the structure of the first locking block in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the second locking block in the utility model;

[0017] Markings in the figure: first locking block 10; first upper wall 11; first front wall 12; first inner wall 13; first slot 131; first outer wall 14; chamfered arc surface 141; first slot 15; second locking block 20; second upper wall 21; second front wall 22; second inner wall 23; second slot 231; second outer wall 24; second slot 25; rotating shaft 30; locking wheel 40; connecting block 50; first block 51; second block 52. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0019] See also Figure 1-4 , the present embodiment discloses a combined lock, which includes a first locking block 10, a second locking block 20, and a locking wheel 40 which are separately arranged; a connecting block 50 is provided between the first locking block 10 and the second locking block 20, and a first clamping structure which cooperates with each other is provided on the connecting block 50 and the first locking block 10, and a second clamping structure which cooperates with each other is provided on the connecting block 50 and the second locking block 20; the first locking block 10 includes a first front wall 12, a first upper wall 11, a first lower wall and a first inner side wall 13, and the second locking block 20 includes a second front wall 22, a second upper wall 21, a second lower wall and a second inner side wall 23, wherein the first upper wall 11 and the second upper wall 21 are both horizontal walls, and are flush with each other to form a first locking surface, the first lower wall and the second lower wall are both horizontal walls, and are flush with each other to form a second locking surface, and the first front wall 12 and the second front wall 22 are both vertical walls, and are flush with each other to form a third locking surface.

[0020] The first inner side wall 13 and the second inner side wall 23 are arranged opposite to each other, and a rotating shaft 30 is vertically arranged between the two. The locking wheel 40 is rotatably assembled on the rotating shaft 30. The arrangement of the locking wheel 40 can make the lock head enter the locking groove in a rolling form, greatly reducing the friction between the lock head and the locking groove, and locking is more labor-saving. Square locking blocks are arranged on both sides of the locking wheel 40, while also having the safety of the square lock head; the outer peripheral surface of the locking wheel 40 protrudes from the first locking surface, the second locking surface, and the third locking surface, so that the first locking surface, the second locking surface and the third locking surface of the lock head can be locked. The third lock surface is in a suspended state. When the lock is frequently used and the lock head and the lock groove are misaligned, the combined lock head can adapt itself through the lock wheel 40 to avoid jamming. The first lock block 10, the second lock block 20 and the connecting block 50 jointly define a U-shaped groove with an opening facing forward, and the rotating shaft 30 and the lock wheel 40 are arranged in the U-shaped groove. In order to make the force of the lock head more balanced during the extension and retraction process, the rotation center of the lock wheel 40 is located on the vertical midline of the first lock block 10 and the second lock block 20.

[0021] The first locking block 10 further includes a first outer side wall 14 , and the second locking block 20 further includes a second outer side wall 24 . Both the first outer side wall 14 and the second outer side wall 24 are provided with a chamfered arc surface 141 to further reduce the locking resistance.

[0022] The main body of the connecting block 50 is a rectangular block. The first clamping structure includes a first clamping block 51 protruding from the first side wall of the connecting block 50, and a first clamping groove 131 recessed on the first inner side wall 13; the second clamping structure includes a second clamping block 52 protruding from the second side wall of the connecting block 50, and a second clamping groove 231 recessed on the second inner side wall 23; to improve the connection stability, the first clamping block 51 and the second clamping block 52 are both dovetail clamping blocks, the first clamping groove 131 and the second clamping groove 231 are both dovetail clamping grooves; and the first clamping groove 131 The first and second slots 231 both include an open end and a closed end. The open end of the first slot 131 is located at the tail end of the first inner side wall 13, and the open end of the second slot 231 is located at the tail end of the second inner side wall 23, so as to facilitate the dovetail card block to enter the dovetail card slot; in order to make the structure of the lock more stable and compact, the upper end surface of the connecting block 50 is flush with the first lock surface, and the lower end surface of the connecting block 50 is flush with the second lock surface; the lengths of the connecting block 50, the first card block 51, the second card block 52, the first slot 131 and the second slot 231 in the telescopic direction of the lock are consistent. The combined lock adopts a split structure, with low production cost and simple and quick assembly.

[0023] The first locking block 10 has a first slot 15 for inserting a pallet, and the second locking block 20 has a second slot 25 for inserting a pallet. The openings of the first slot 15 and the second slot 25 face backwards to match the pallet in the lock.

[0024] The combined lock disclosed by the utility model has high locking resistance, strong self-adaptability, is not easy to get stuck, and has low production cost.

[0025] It should be understood that in the claims and description of the utility model, all "including..." should be understood as open-ended meanings, that is, their meanings are equivalent to "at least including...", and should not be understood as closed-ended meanings, that is, their meanings should not be understood as "only including...". The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0026] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should be covered by the protection scope of the utility model.

Claims

1. A combined lock, characterized in that: The lock wheel is a lock wheel that is configured to lock the locking cam of the first locking block and the lock wheel is configured to lock the locking cam of the second locking block.

2. A combined lock according to claim 1, characterized in that: The first locking block, the second locking block and the connecting block jointly define a U-shaped groove with an opening facing forward, and the rotating shaft and the locking wheel are arranged in the U-shaped groove; the rotation center of the locking wheel is located on the vertical midline of the first locking block and the second locking block.

3. A combined lock according to claim 2, characterized in that: The main body of the connecting block is a rectangular block, the first clamping structure includes a first clamping block protruding from the first side wall of the connecting block, and a first clamping groove recessed on the first inner wall; the second clamping structure includes a second clamping block protruding from the second side wall of the connecting block, and a second clamping groove recessed on the second inner wall.

4. A combined lock according to claim 3, characterized in that: The first card block and the second card block are both dovetail card blocks, and the first card slot and the second card slot are both dovetail card slots; and the first card slot and the second card slot both include an open end and a closed end, the open end of the first card slot is located at the tail end of the first inner side wall, and the open end of the second card slot is located at the tail end of the second inner side wall.

5. A combined lock according to claim 4, characterized in that: The upper end surface of the connecting block is flush with the first locking surface, and the lower end surface of the connecting block is flush with the second locking surface.

6. A combined lock according to claim 5, characterized in that: The lengths of the connecting block, the first clamping block, the second clamping block, the first clamping slot and the second clamping slot in the extension and retraction direction of the lock head are consistent.

7. A combined lock according to any one of claims 1 to 6, characterized in that: A first slot for inserting a support plate is provided in the first locking block, and a second slot for inserting a support plate is provided in the second locking block. The openings of the first slot and the second slot are both backward.

8. A combined lock according to claim 7, characterized in that: The first locking block further includes a first outer side wall, and the second locking block further includes a second outer side wall. Both the first outer side wall and the second outer side wall are provided with chamfered arc surfaces.

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