A sunken crank lock

Abstract

A sunken crank lock includes a crank, a lock shell and a lock core. The crank and the lock shell have a locked state and an unlocked state. The first end of the crank is a rotating end, which is rotatably connected to the lock shell through a rotating shaft, and the second end of the crank is a locking end. The lock core is assembled on the locking end of the crank, and in the locked state, the lock core is locked on the lock core seat provided at the first end of the lock shell. The rotating end is a rotating head, which is assembled on the adapter provided at the second end of the lock shell. The rotating point of the rotating head is located inside the adapter, and is connected to the adapter by a universal joint. The lock shell is embedded in the door panel, and in the locked state, the surfaces of the crank and the lock core are located in the same plane as the door panel, or the surfaces of both are lower than the plane where the surface of the door panel is located, so as to maintain the original size of the cabinet and save space. This case is a sunken setting, which can be rotated 360 degrees, and after the crank lock is opened, the crank itself will not contact the surface of the door panel to cause damage to it.

Description

Technical Field

[0001] The utility model relates to a lock, in particular to a sinking type crank lock. The sinking type crank lock is suitable for locking containers, outdoor energy storage cabinets and various chassis and cabinets. Background Art

[0002] Locks refer to devices that seal things, including locks, keys and their accessories. They are generally interpreted as "seals that can only be opened with a key". In addition to being opened with a key, locks can also be opened with commands such as light, electricity, magnetism, sound and fingerprints. Locks are not only protective equipment, but also have the functions of "management" and "decoration".

[0003] Among them, the crank lock is the most common type of lock, also known as the hand crank lock. It is generally composed of a lock body, a lock tongue, a crank handle and other parts, and can be divided into two types: single torsion spring type and double torsion spring type. This type of lock has the advantages of small footprint and high protection level, so it is widely used in industrial cabinets, engineering machinery and equipment, communications, medical technology, refrigeration, food industry, environmental technology and rail locomotives.

[0004] However, the existing crank locks have the following disadvantages:

[0005] Door cabinets are commonly locked with crank locks, and traditional crank locks are usually fixed by clamping the door panel with the lock shell and the back cover. Therefore, the structure of the crank lock usually makes the lock shell and the crank part always protrude from the surface of the door panel, which not only increases the original size of the cabinet and wastes space, but also easily causes bumps and damages to the door panel during transportation.

[0006] After using the crank lock, when the crank lock is in the open state, the crank part is easily affected by gravity and the lock core part is pressed down and scratches the surface of the door panel, causing damage to the door panel.

[0007] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0008] The utility model aims to provide a sinking type crank lock.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sunken crank lock, including a crank, a lock shell and a lock core, and the crank and the lock shell have a locked state and an unlocked state.

[0010] The first end of the crank is a rotating end, which is rotatably connected to the lock housing through a rotating shaft, and the second end of the crank is a locking end. The lock core is assembled on the locking end of the crank, and in a locked state, the lock core is locked on a lock core seat provided at the first end of the lock housing.

[0011] The rotating end is a rotating head, which is assembled on a transfer seat arranged at the second end of the lock shell. The rotating point of the rotating head is located inside the transfer seat and is connected to the transfer seat via a universal joint.

[0012] The lock housing is embedded in the door panel, and in a locked state, the surfaces of the crank and the lock core are located in the same plane as the door panel, or the surfaces of both are lower than the plane where the surface of the door panel is located.

[0013] In the above scheme, the crank handle and the lock housing have a locked state and an unlocked state. In the locked state, the crank handle is in a locked position relative to the lock housing; in the unlocked state, the crank handle is in an unlocked position relative to the lock housing.

[0014] According to a further technical solution, the rotating head is provided with a mounting groove, a plug hole is provided on the mounting groove, a supporting portion is provided on one edge of the mounting groove, and an expansion groove matching the rotating head is provided on the other edge of the mounting groove.

[0015] According to a further technical solution, the adapter seat is penetrated by a connecting hole for passing the rotating shaft in the up-down direction, and a matching portion matching the abutting portion is provided on one side edge of the connecting hole; the adapter seat is also provided with two inner assembly holes, which are symmetrically arranged on the left and right sides of the connecting hole.

[0016] According to a further technical solution, the rotating shaft is connected to the mounting groove through a fastener 1 which penetrates the plug hole, and the fastener 1 is a pin shaft.

[0017] According to a further technical solution, a lock core insertion hole adapted to be installed with the lock core is provided on the locking end, an L-shaped limiting groove is provided below the locking end corresponding to the lock core insertion hole, and a fixing hole is provided on the L-shaped limiting groove.

[0018] According to a further technical solution, the lock core is fixedly connected to the L-shaped limiting groove by a second fastener penetrating through the fixing hole, and the second fastener is a screw.

[0019] According to a further technical solution, a plurality of external assembly holes are evenly distributed on the four edges of the outer side of the lock housing.

[0020] According to a further technical solution, a groove 1 and a groove 2 with different groove diameters are provided on the inner bottom side of the crank.

[0021] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0022] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0023] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0024] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0025] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0026] The working principle and advantages of this utility model are as follows:

[0027] The crank lock in this case adopts a sunken setting so that it does not protrude from the surface of the door panel at all, maintaining the original size of the cabinet and saving space. The turning point of the crank head is set inside the adapter to form a universal joint connection.

[0028] In addition, the crank handle of this case can be rotated 360°, which is highly flexible to use. After the crank handle lock is opened, the crank handle itself will not contact the surface of the door panel and cause damage to it.

[0029] In addition, the overall structure of this case is simple and is still applicable to different crank handle sizes. Thanks to this feature, the crank handle feels good to hold, effectively improves the bearing capacity, and can be widely used in different cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Attached Figure 1 It is a schematic diagram of the structure of the utility model as a whole (in the locked state);

[0031] Attached Figure 2 This is a schematic diagram of the structure of the utility model as a whole (in the open state)

[0032] Attached Figure 3 It is the front view of the utility model;

[0033] Attached Figure 4 It is a left view of the utility model;

[0034] Attached Figure 5 It is a rear view of the utility model;

[0035] Attached Figure 6 It is an exploded view of the utility model;

[0036] Attached Figure 7 This is a schematic diagram of the installation direction structure of the utility model to be combined with a door panel;

[0037] Attached Figure 8 This is a schematic diagram of the installation structure of the utility model combined with a door panel;

[0038] Attached Fig. 9 The structure of the utility model combined with the door panel and in the locked state is shown in FIG. Figure 1 ;

[0039] Attached Fig.10 The structure of the utility model combined with the door panel and in the locked state is shown in FIG. Figure 2 ;

[0040] Attached Fig.11 for Fig. 9 AA section diagram in FIG.

[0041] Attached Fig.12 This is a schematic diagram of the structure of the utility model combined with the door panel and in the open state

[0042] Attached Fig.13 for Fig.12 A partial cross-section diagram of Figure 1 ;

[0043] Attached Fig.14 for Fig.12 A partial cross-section diagram of Figure 2 ;

[0044] Attached Fig.15 This is a schematic diagram of the structure of the crank handle of the utility model embodiment;

[0045] Attached Fig.16 This is a schematic diagram of the side structure of the crank handle of the utility model embodiment;

[0046] Attached Fig.17 The external structure diagram of the crank handle of the utility model is shown in FIG.

[0047] Attached Fig.18 This is a schematic diagram of the internal structure of the crank handle of the utility model embodiment;

[0048] Attached Fig.19 It is a partial enlarged view of A in the embodiment of the present utility model;

[0049] Attached Fig. 20 It is a partial enlarged view of the B part of the embodiment of the utility model;

[0050] Attached Fig.21 This is a schematic diagram of the structure of the housing of an embodiment of the utility model;

[0051] Attached Fig. 22 This is a schematic diagram of the internal structure of the housing of an embodiment of the utility model;

[0052] Attached Fig.23 It is a cross-sectional schematic diagram of the housing of an embodiment of the utility model.

[0053] In the above drawings: 1. crank handle; a. rotating end; b. locking end; 11. rotating head; 12. expansion slot; 13. mounting slot; 14. plug-in hole; 15. abutment portion; 16. lock core through hole; 17. L-shaped limit slot; 171. fixing hole; 18. groove 1; 19. groove 2; 2. lock housing; 21. external assembly hole; 22. lock core seat; 23. adapter seat; 231. connecting hole; 232. internal assembly hole; 233. matching portion; 24. reset column; 25. buffer channel; 26. lock hole; 3. lock core; 31. lock tongue; 4. rotating shaft; 5. fastener 1; 6. fastener 2; 7. door panel; 71. stud. DETAILED DESCRIPTION

[0054] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0055] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0056] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0057] See attached Figures 1 to 6 and attached Figures 15 to 23 As shown, a sinking crank lock of the utility model comprises a crank 1, a lock housing 2 and a lock core 3, wherein the crank 1 and the lock housing 2 have a locked state and an unlocked state;

[0058] The first end of the crank 1 is a rotating end a, which is rotatably connected to the lock housing 2 via a rotating shaft 4, and the second end of the crank 1 is a locking end b;

[0059] The lock core 3 is assembled on the locking end b of the crank handle 1, and in the locked state, the lock core 3 is locked on the lock core seat 22 provided at the first end of the lock housing 2; the rotating end a is a rotating head 11, and the rotating head 11 is assembled on the adapter seat 23 provided at the second end of the lock housing 2, and the rotating point of the rotating head 11 is located inside the adapter seat 23, that is, the rotating point is not higher than the upper surface of the lock housing 2, and because the lock housing 2 is embedded in the door panel 7, the rotating head 11 is also located in the door panel 7, so the crank handle 1 can realize a sunken design relative to the door panel 7, and is connected to the adapter seat 23 by a universal joint. The lock housing 2 is embedded in the door panel 7, and in the locked state, the surfaces of the crank handle 1 and the lock core 3 are located in the same plane as the door panel 7, or the surfaces of both are lower than the plane where the surface of the door panel 7 is located.

[0060] See attached Figures 7 to 14 As shown, the crank handle 1 and the lock housing 2 have a locked state and an unlocked state: in the locked state, the crank handle 1 is in a locked position relative to the lock housing 2; in the unlocked state, the crank handle 1 is in an unlocked position relative to the lock housing 2.

[0061] The rotating head 11 is provided with a mounting groove 13, a plug hole 14 is provided on the mounting groove 13, and a supporting portion 15 is provided on one side edge of the mounting groove 13. An expansion groove 12 matching the rotating head 11 is provided on the other side edge of the mounting groove 13. The expansion groove 12 can further increase the opening and closing angle of the crank 1, thereby improving the convenience of use.

[0062] The adapter seat 23 has a connecting hole 231 extending in the vertical direction for passing the rotating shaft 4, and a matching portion 233 matching the abutting portion 15 is provided on one side edge of the connecting hole 231; the adapter seat 23 is also provided with two inner assembly holes 232, which are symmetrically arranged on the left and right sides of the connecting hole 231. The latch body adapted to be installed with the sunken crank lock is connected through the two inner assembly holes 232 to enhance the assembly strength.

[0063] The rotating shaft 4 is connected to the mounting groove 13 through a fastener 5 penetrating the plug hole 14, and the fastener 5 is a pin, so as to disassemble or replace the rotating shaft 4.

[0064] like Figure 6 As shown, the locking end b is provided with a lock core through hole 16 adapted to be installed with the lock core 3. An L-shaped limiting groove 17 is provided below the locking end b corresponding to the lock core through hole 16, and a fixing hole 171 is provided on the L-shaped limiting groove 17. The lock core 3 is engaged with the L-shaped limiting groove 17 for limiting, so as to prevent the lock core 3 from loosening and shifting during long-term use.

[0065] The lock core 3 is fixedly connected to the L-shaped limiting groove 17 through a fastener 2 6 that penetrates the fixing hole 171 , and the fastener 2 6 is a screw.

[0066] like Figure 7~Figure 10 As shown, a plurality of external assembly holes 21 are evenly distributed on the edges of the outer side of the lock housing 2. The lock housing 2 can be fixed in the door panel 7 in all directions by connecting the external studs 71 ​​one by one through the plurality of external assembly holes 21.

[0067] A groove 18 and a groove 2 19 with different groove diameters are provided on the inner bottom side of the crank 1. The provided groove structure can effectively improve the efficiency and convenience of use, is not easy to slide, can make the hand grip more stable, avoid hand fatigue, and facilitate the opening and closing operation.

[0068] The outer top side of the lock housing 2 is provided with a closed buffer channel 25, and the buffer channel 25 can be filled with buffer materials, such as rubber rings, to protect the surface of the lock housing 2 and avoid excessive wear; the inner bottom side of the lock housing 2 is provided with a plurality of reset columns 24.

[0069] Working principle:

[0070] When the crank 1 is in a locked state, based on the fact that the rotation point of the rotating head 11 is located inside the adapter seat 23, the lock core 3 with a head convex structure forms an embedding relationship with the lock shell 2, and the lock tongue 31 provided on the lock core 3 is locked and connected with the lock hole 26 provided on the corresponding adapter seat 23. Only after the lock core 3 is unlocked and lifted to the maximum angle of the crank 1, the embedding relationship can be released; moreover, the rotation point of the rotating head 11 is provided inside the adapter seat 23, and a universal joint connection is formed between the rotating head 11 and the adapter seat 23. At this time, the crank 1 can rotate 360°, so that when rotating, the bottom surface of the crank 1 and the sunken plane of the lock shell 2 can be fully engaged, thereby producing an anti-downward pressure effect.

[0071] When the crank 1 is in the open state, the raised structure on the head of the lock core 3 forms a cylindrical structure and is coaxial with the cylindrical inner wall of the lock housing 2. The gap is very small, which can ensure that the crank 1 is fixed at any angle after opening, and can also assist in producing an anti-downward pressure effect, so that the crank 1 has no direct contact with the door panel 7, ensuring that no scratches or wear will occur between the surfaces of the two.

[0072] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A sunken crank lock, comprising a crank (1), a lock housing (2) and a lock core (3), characterized in that: The crank handle (1) and the lock housing (2) have a locked state and an unlocked state; The first end of the crank (1) is a rotating end (a), which is rotatably connected to the lock housing (2) via a rotating shaft (4), and the second end of the crank (1) is a locking end (b); The lock core (3) is assembled on the locking end (b) of the crank (1), and in a locked state, the lock core (3) is locked on a lock core seat (22) provided at the first end of the lock housing (2); The rotating end (a) is a rotating head (11), and the rotating head (11) is mounted on a transfer seat (23) provided at the second end of the lock housing (2). The rotating point of the rotating head (11) is located inside the transfer seat (23), and the rotating head (11) is connected to the transfer seat (23) via a universal joint. The lock housing (2) is embedded in the door panel (7), and in a locked state, the surfaces of the crank (1) and the lock core (3) are located in the same plane as the door panel (7), or the surfaces of both are lower than the plane where the surface of the door panel (7) is located.

2. A sunken crank lock according to claim 1, characterized in that: The rotating head (11) is provided with a mounting groove (13), a plug hole (14) is provided on the mounting groove (13), and a supporting portion (15) is provided on one side edge of the mounting groove (13).

3. A sunken crank lock according to claim 2, characterized in that: An expansion slot (12) matching the rotating head (11) is provided on the other side edge of the installation slot (13).

4. A sunken crank lock according to claim 2, characterized in that: The adapter seat (23) is penetrated by a connecting hole (231) in the up-down direction for passing the rotating shaft (4), and a matching portion (233) matching with the abutting portion (15) is provided on an upper edge of the connecting hole (231); The adapter seat (23) is further provided with two inner assembly holes (232), and the two inner assembly holes (232) are symmetrically arranged on the left and right sides of the connecting hole (231).

5. The sunken crank lock according to claim 2, characterized in that: The rotating shaft (4) is connected to the mounting groove (13) by a fastener (5) passing through the plug hole (14), and the fastener (5) is a pin.

6. The sunken crank lock according to claim 1, characterized in that: The locking end (b) is provided with a lock core penetration hole (16) adapted to be mounted on the lock core (3).

7. A sunken crank lock according to claim 6, characterized in that: An L-shaped limiting groove (17) is provided below the locking end (b) corresponding to the lock core penetration hole (16), and a fixing hole (171) is provided on the L-shaped limiting groove (17).

8. A sunken crank lock according to claim 7, characterized in that: The lock core (3) is fixedly connected to the L-shaped limiting groove (17) via a second fastener (6) that penetrates the fixing hole (171), and the second fastener (6) is a screw.

9. The sunken crank lock according to claim 1, characterized in that: Several external assembly holes (21) are evenly distributed around the edges of the outer side of the lock housing (2).

10. The sunken crank lock according to claim 1, characterized in that: A groove 1 (18) and a groove 2 (19) having different groove diameters are provided on the inner bottom side of the crank (1).

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