Box lock
By designing a box lock head that includes a lock head housing, a rotating lock core, a spring and a lock hole stop, the existing lock structure is solved and the anti-theft effect is poor, achieving simple operation, efficient dustproof and safe and reliable locking effect.
Patent Information
- Application Number
- CN202421716896.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing box locks have complex structures, many parts, high manufacturing costs, and poor anti-theft effect and safety. They are especially poor in outdoor environments, which are prone to inconvenience in operation due to blockage of foreign objects.
A box lock head is designed, including a lock head housing, a rotating lock core, a spring, and a lock hole stop. By setting a lock hole stop and a sealing ring in the lock core key, combined with the special shape of the key and the design of the lock hole, the lock is achieved with simple operation and efficient dust protection.
The lock has a novel structure and reasonable design, which prevents foreign objects from entering the lock core key hole, avoids blockage, improves dustproof effect and safety, is simple to operate, convenient to use, and has low manufacturing cost.
Smart Images
Figure CN223034696U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, and more specifically, to a box lock. Background Art
[0002] In some distribution boxes, test boxes, and test cabinets, locks need to be installed to prevent theft inside the boxes. However, the structures of such locks on the market are relatively complex, with many parts and components, high manufacturing costs, poor anti-theft effects, and poor security. For some outdoor distribution boxes, the dustproof effect is poor. Because foreign objects often enter the lock core hole outdoors, the lock core is blocked, making it inconvenient for operators to open and close the lock. Utility Model Content
[0003] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide a box lock.
[0004] To achieve the above-mentioned purpose, the utility model provides a box lock, including a lock shell, a rotating lock core, a spring, and a lock hole stopper. The rotating lock core can be rotatably installed in the center hole of the lock shell, and the rear end of the rotating lock core extends from the rear end of the center hole of the lock shell. The center of the front end surface of the lock shell is provided with a shell lock hole for a key to pass through. The shape of the shell lock hole corresponds to the cross-sectional shape of the key head of the key. The front side of the rotating lock core is concavely provided with a lock core lock hole concave toward the rear end direction for the key head to be inserted into. The lock hole stopper is located in the lock core lock hole and can be moved along the lock core lock hole. The lock core is locked and the key is engaged when the key is engaged. The lock core is locked and the key is engaged when the key is engaged. The lock core is locked and the key is engaged when the key is engaged.
[0005] Preferably, the key head end of the key is provided with a key head cylinder, and three key head matching blocks are evenly distributed in an annular shape on the end of the outer surface of the key head cylinder, the shell lock hole includes a shell middle hole and three matching holes evenly distributed in an annular shape around the shell middle hole, the front end of the lock hole block includes a block cylinder and three block matching blocks evenly distributed in an annular shape around the block cylinder, and the lock core lock hole includes a lock core middle hole and three side holes distributed in an annular shape around the lock core middle hole.
[0006] Preferably, the two side portions of each side hole extend toward both sides respectively.
[0007] Preferably, the limiting structure is arranged as a limiting convex ring, which is connected to the rear end of the lock hole stopper. The diameter of the limiting convex ring is larger than that of the stopper cylinder of the lock hole stopper, so that a stepped structure is formed between the front surface of the limiting convex ring and the outer side wall of the stopper cylinder of the lock hole stopper. The front surface of the limiting convex ring is in contact and cooperation with the front inner end surface of the lock head housing to prevent the lock hole stopper from falling out of the lock core lock hole.
[0008] Preferably, a sealing ring installation groove is recessed on the outer wall of the rotating lock core. A sealing ring is installed in the sealing ring installation groove. The sealing ring is located between the inner side wall of the lock head housing and the rotating lock core, and the outer surface of the sealing ring is in contact with the inner side wall of the lock head housing.
[0009] Preferably, a first rotation stroke limiting groove is recessed at a position near the rear of the middle of the outer side wall of the rotating lock core. A limiting post penetrates through the middle position near the rear of the side wall of the lock head housing. One end of the limiting post extends into the first rotation stroke limiting groove of the rotating lock core. When the rotating lock core rotates, the limiting post can be in limiting contact with both ends of the first rotation stroke limiting groove respectively, so as to limit the rotation angle of the rotating lock core.
[0010] Preferably, a limiting block is convexly provided at the front end position of the inner surface of the lock head housing. A second rotation stroke limiting groove is recessed at the front end of the outer surface of the rotating lock core. The limiting block is located in the second rotation stroke limiting groove and can move in the second rotation stroke limiting groove.
[0011] Preferably, a screwing direction mark is provided on the front end face of the lock head housing.
[0012] Preferably, two symmetrically arranged lock tongue connection holes are provided at the rear end of the rotating lock core.
[0013] Preferably, a reinforcing convex ring is convexly provided at one end of the outer surface of the lock head housing close to the housing lock hole. Two reinforcing strips located on the outer surface of the lock head housing are connected to the rear end of the reinforcing convex ring. The reinforcing strips extend towards the rear end of the lock head housing, and the two reinforcing strips are arranged at intervals.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. The structure of the present utility model is novel and reasonably designed. A lock hole stopper is arranged in the lock core lock hole. The lock hole stopper can prevent foreign objects from entering the lock core lock hole, prevent the lock hole from being blocked, and has good dust prevention effect. The opening and closing operations of this lock are simple, the structure is simple, safe and reliable, and the manufacturing cost is low.
[0016] 2. On both sides of the three side holes of the lock core lock hole of the present utility model, they extend and expand towards both sides along the arc trajectory of the middle hole of the lock core. Through this extension and expansion design, the key can be pulled out or inserted without the lock core lock hole being completely aligned with the housing lock hole, simplifying the operation of locking and unlocking, greatly improving the convenience of use, and preventing the problem that the key cannot be inserted due to the lock core lock hole not being completely aligned with the housing lock hole.
[0017] 3. A sealing ring is added between the outer wall of the rotating lock core and the inner wall of the lock head housing. The sealing ring has a waterproof effect, and the friction between the sealing ring and the inner wall of the lock head housing generates a damping effect, improving the operation experience and achieving the purpose of positioning the rotation of the rotating lock core. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0019] Figure 1 is a schematic structural diagram provided by an embodiment of the present utility model;
[0020] Figure 2 is an exploded view provided by an embodiment of the present utility model;
[0021] Figure 3 is a cross-sectional view of the lock core part provided by an embodiment of the present utility model;
[0022] Figure 4 is a schematic structure of the lock head housing provided by an embodiment of the present utility model Figure 1 ;
[0023] Figure 5 is a schematic structure of the lock head housing provided by an embodiment of the present utility model Figure 2 ;
[0024] Figure 6 is a schematic structure of the lock head housing provided by an embodiment of the present utility model Figure 3 ;
[0025] Figure 7 is a schematic structure of the rotating lock core provided by an embodiment of the present utility model Figure 1 ;
[0026] Figure 8 is a schematic structure of the rotating lock core provided by an embodiment of the present utility model Figure 2 ;
[0027] Figure 9It is a schematic structure diagram of the rotating lock core provided by an embodiment of the present invention. Figure 3 ;
[0028] Figure 10 It is a schematic structure diagram of the lock hole block provided by an embodiment of the present invention;
[0029] Figure 11 It is a schematic structure diagram of the key provided by an embodiment of the present invention. Specific embodiments
[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0031] Please refer to Figures 1 to 11 , an embodiment of the present invention provides a box lock, which includes a lock head housing 1, a rotating lock core 2, a spring 3, a lock hole block 4, and a key 5. The structures and working principles of each component will be described below.
[0032] The rotating lock core 2 is rotatably installed in the central hole of the lock head housing 1, and the rear end of the rotating lock core 2 extends from the rear end of the central hole of the lock head housing 1.
[0033] Preferably, in order to install the lock tongue, two symmetrically arranged lock tongue connection holes 27 can be provided at the rear end of the rotating lock core 2. The lock tongue can be installed at the rear end of the rotating lock core through screws. The lock tongue is perpendicular to the rotating lock core. When the key is turned, the lock tongue can swing around the connection part with the rotating lock core as the center.
[0034] A housing lock hole 11 for the key 5 to pass through is provided at the center of the front end face of the lock head housing 1. The shape of the housing lock hole 11 corresponds to the cross-sectional shape of the key head of the key 5. A lock core lock hole 21 recessed backward is provided on the front face of the rotating lock core 2 for the key head of the key 5 to insert. The shape of the lock core lock hole 21 corresponds to the cross-sectional shape of the key head of the key 5. The lock hole block 4 is located in the lock core lock hole 21 and can translate along the depth direction of the lock core lock hole 21. The spring 3 is installed in the lock core lock hole 21 and is located between the rotating lock core 2 and the back of the lock hole block 4.
[0035] In this embodiment, the key head end of the key 5 may be provided with a key head cylinder 51, and the outer surface end of the key head cylinder 51 is evenly distributed with three key head matching blocks 52 in an annular manner. The shell lock hole 11 includes a shell middle hole 111 and three matching holes 112 evenly distributed in an annular manner around the shell middle hole 111. The front end of the lock hole block 4 includes a block cylinder 41 and three block matching blocks evenly distributed in an annular manner around the block cylinder 41. The lock core lock hole 21 includes a lock core middle hole 211 and three side holes 212 annularly distributed around the lock core middle hole 211. The shapes of the key head, the shell lock hole, the lock hole block and the lock core lock hole correspond to each other. The corresponding design of the shapes of the shell lock hole, the lock hole block and the lock core lock hole can prevent the insertion of a key head with an incompatible shape, thereby achieving the purpose of anti-theft.
[0036] In order to prevent the rotation of the lock core from causing the lock core lock hole and the shell lock core to shift, making it impossible to insert and pull out the key, the two sides of each side hole 212 are extended to both sides along the trajectory of the circular arc of the lock core center hole 21. The design of extending to both sides can make it possible for the lock core lock hole to still correspond to the shell lock hole when the rotating lock core is rotated unnecessarily, and the key can be smoothly inserted into the lock core lock hole. Similarly, when the key is pulled out, due to the design of extending to both sides, after locking, the lock core lock hole does not need to be rotated to a unique position to align with the shell lock hole before the key can be pulled out, which is convenient for users to quickly pull out the key, improves ease of use, and improves user experience.
[0037] When the spring 3 is in a normal state, the front end of the lock hole block 4 can extend into the outer shell lock hole 11 of the lock head shell 1, and the limiting structure provided on the lock hole block 4 can cooperate with the inner surface of the lock head shell 1 to prevent the lock hole block 4 from falling out of the lock core lock hole 21.
[0038] Preferably, the limiting structure can be set as a limiting protrusion 43, which is connected to the rear end of the keyhole block 4, and the diameter of the limiting protrusion 43 is larger than the diameter of the block column 41 of the keyhole block 4, so that the front side of the limiting protrusion 43 and the outer side wall of the block column 41 of the keyhole block 4 form a step structure, and the front side of the limiting protrusion 43 contacts and cooperates with the front inner end face of the lock head shell 1 to prevent the keyhole block 4 from falling out of the lock core lock hole 21.
[0039] When the key 5 passes through the shell lock hole 11 and is inserted into the lock core lock hole 21, the key 5 can resist the lock hole block 4 and drive the lock hole block 4 to move to the bottom of the lock core lock hole 21. At this time, when the key 5 is turned, the key 5 can drive the rotating lock core 2 to rotate relative to the lock head shell 1.
[0040] like Figure 3 and Figure 8As shown in the figure, a sealing ring installation groove 22 may be recessed on the outer wall of the rotating lock core 2. A sealing ring 23 is installed in the sealing ring installation groove 22. The sealing ring 23 is located between the inner side wall of the lock head housing 1 and the rotating lock core 2. The outer surface of the sealing ring 23 contacts the inner side wall of the lock head housing 1. The design of the sealing ring can achieve the purpose of waterproof and dustproof. And the outer surface of the sealing ring 23 contacts the inner side wall of the lock head housing 1, which can realize the positioning of the rotation of the lock core and provide a damping feeling when the rotating lock core rotates, improving the user experience.
[0041] In order to limit the rotation angle of the rotating lock core, a first rotation stroke limit groove 24 is recessed at a position near the rear in the middle of the outer side wall of the rotating lock core 2. A limit post 53 is inserted through the middle position near the rear of the side wall of the lock head housing 1. One end of the limit post 53 extends into the first rotation stroke limit groove 24 of the rotating lock core 2. When the rotating lock core 2 rotates, the limit post 53 can respectively contact the two ends of the first rotation stroke limit groove 24 in a limiting manner, thereby limiting the rotation angle of the rotating lock core 2. A limit block 12 protrudes from the front end position of the inner surface of the lock head housing 1. A second rotation stroke limit groove 25 is recessed at the front end of the outer surface of the rotating lock core 2. The limit block 12 is located in the second rotation stroke limit groove 25 and can move in the second rotation stroke limit groove 25. After the rotating lock core rotates in place, the limit post can contact one end of the first rotation stroke limit groove 24 in a limiting manner, and the limit block 12 can contact one end of the second rotation stroke limit groove 25 in a limiting manner, so as to achieve the purpose of limiting the rotation of the lock core.
[0042] In order to remind the user, a screwing direction mark 13 is provided on the front end face of the lock head housing 1. This mark is used to remind the user of the screwing direction for unlocking.
[0043] As Figure 6 shown, a reinforcing convex ring 14 protrudes from one end of the outer surface of the lock head housing 1 near the housing lock hole 11. Two reinforcing strips 15 located on the outer surface of the lock head housing 1 are connected to the rear end of the reinforcing convex ring 14. The reinforcing strips 15 extend towards the rear end of the lock head housing 1. The two reinforcing strips 15 are arranged at intervals. Through such a design, the overall structural strength of the housing can be improved.
[0044] During use, the user can insert the key head through the housing lock hole into the lock core lock hole. During this process, the key head abuts against the lock hole stopper, causing the lock hole stopper to move towards the bottom of the lock core lock hole, so that the key head can be inserted into the lock core lock hole. Then rotate the key, causing the rotating lock core to rotate, causing the lock tongue to swing. The lock tongue can be engaged or disengaged with the side of the box body, thereby achieving unlocking or locking.
[0045] In summary, the present utility model has the following advantages:
[0046] 1. The structure of the utility model is novel and reasonably designed. A lock hole stopper is arranged in the lock core lock hole. The lock hole stopper can prevent foreign objects from entering the lock core lock hole, prevent the lock hole from being blocked, and has good dust-proof effect. The opening and closing operations of this lock are simple, the structure is simple, safe and reliable, and the manufacturing cost is low.
[0047] 2. Both sides of the three side holes of the lock core lock hole of the utility model extend and expand along the arc track of the middle hole of the lock core to both sides. Through the extension and expansion design, the key can be pulled out or inserted without the lock core lock hole being completely aligned with the outer shell lock hole, which simplifies the operation of locking and unlocking, greatly improves the convenience of use, and can prevent the problem that the key cannot be inserted due to the lock core lock hole not being completely aligned with the outer shell lock hole.
[0048] 3. A sealing ring is added between the outer wall of the rotating lock core and the inner wall of the lock head housing. The sealing ring has a waterproof effect, and the friction between the sealing ring and the inner wall of the lock head housing generates a damping effect, which improves the operation experience and at the same time achieves the purpose of positioning the rotation of the rotating lock core.
[0049] The above embodiments are the preferred embodiments of the utility model, but the embodiments of the utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the utility model shall be equivalent replacement methods and are all included in the protection scope of the utility model.
Claims
1. A box lock, characterized in that: The invention comprises a lock shell (1), a rotary lock core (2), a spring (3), and a lock hole stopper (4); the rotary lock core (2) is rotatably mounted in the center hole of the lock shell (1); the rear end of the rotary lock core (2) extends out from the rear end of the center hole of the lock shell (1); a shell lock hole (11) for a key (5) to pass through is provided at the center of the front end surface of the lock shell (1); the shape of the shell lock hole (11) corresponds to the cross-sectional shape of the key head of the key (5); a lock core lock hole (21) recessed toward the rear end direction for the key head of the key (5) to be inserted is provided on the front surface of the rotary lock core (2); the lock hole stopper (4) is located in the lock core lock hole (21) and can be translated along the depth direction of the lock core lock hole (21); the spring (3) is mounted on the lock core lock hole (21) and the lock core lock hole (21) is recessed toward the rear end direction for the key head of the key (5) to be inserted; the lock hole stopper (4) is located in the lock core lock hole (21) and can be translated along the depth direction of the lock core lock hole (21); the spring (3) is mounted on the lock core lock hole (21) and the lock core lock hole (21) is recessed toward the rear end direction for the key head of the key (5) to be inserted; the lock core ... The lock core lock hole (21) is located between the rotating lock core (2) and the back of the lock hole block (4). When the spring (3) is in a normal state, the front end of the lock hole block (4) can extend into the outer shell lock hole (11) of the lock head shell (1), and the limiting structure provided on the lock hole block (4) can cooperate with the inner surface of the lock head shell (1) to prevent the lock hole block (4) from falling out of the lock core lock hole (21). When the key (5) passes through the outer shell lock hole (11) and is inserted into the lock core lock hole (21), the key (5) can resist the lock hole block (4) and drive the lock hole block (4) to move to the bottom of the lock core lock hole (21). At this time, the key (5) is turned, and the key (5) can drive the rotating lock core (2) to rotate relative to the lock head shell (1).
2. The box lock according to claim 1, characterized in that: The key head end of the key (5) is provided with a key head column (51), and the outer surface end of the key head column (51) is evenly distributed with three key head matching blocks (52) in an annular shape. The shell lock hole (11) includes a shell middle hole (111) and three matching holes (112) evenly distributed in an annular shape around the shell middle hole (111). The front end of the lock hole stopper (4) includes a stopper column (41) and three stopper matching blocks (42) evenly distributed in an annular shape around the outer circumference of the stopper column (41). The lock core lock hole (21) includes a lock core middle hole (211) and three side holes (212) evenly distributed in an annular shape around the lock core middle hole (211).
3. The box lock according to claim 2, characterized in that: The two side portions of each side hole (212) extend toward both sides.
4. The box lock according to claim 1, characterized in that: The limiting structure is configured as a limiting convex ring (43), the limiting convex ring (43) being connected to the rear end of the lock hole block (4), the diameter of the limiting convex ring (43) being larger than the diameter of the block column (41) of the lock hole block (4), so that the front face of the limiting convex ring (43) and the outer side wall of the block column (41) of the lock hole block (4) form a step structure, and the front face of the limiting convex ring (43) is in contact with the front inner end face of the lock head shell (1) to prevent the lock hole block (4) from falling out of the lock core lock hole (21).
5. The box lock according to claim 1, characterized in that: A sealing ring installation groove (22) is recessed on the outer wall of the rotary lock core (2), a sealing ring (23) is installed in the sealing ring installation groove (22), the sealing ring (23) is located between the inner side wall of the lock shell (1) and the rotary lock core (2), and the outer surface of the sealing ring (23) is in contact with the inner side wall of the lock shell (1).
6. The box lock according to claim 1, characterized in that: A first rotational travel limit groove (24) is recessed at a rear middle portion of the outer wall of the rotary lock core (2), and a limit column (53) is penetrated at a rear middle portion of the side wall of the lock head shell (1), one end of the limit column (53) extends into the first rotational travel limit groove (24) of the rotary lock core (2). When the rotary lock core (2) rotates, the limit column (53) can respectively contact with the two ends of the first rotational travel limit groove (24), thereby limiting the rotation angle of the rotary lock core (2).
7. The box lock according to claim 1, characterized in that: A limit block (12) is convexly provided at the front end of the inner surface of the lock shell (1), and a second rotation travel limit groove (25) is concavely provided at the front end of the outer surface of the rotary lock core (2); the limit block (12) is located in the second rotation travel limit groove (25) and can move in the second rotation travel limit groove (25).
8. The box lock according to claim 1, characterized in that: The front end surface of the lock housing (1) is provided with a screwing direction mark (13).
9. The box lock according to claim 1, characterized in that: The rear end of the rotary lock core (2) is provided with two left-right symmetrical lock tongue connection holes (27).
10. The box lock according to claim 1, characterized in that: A reinforcing convex ring (14) is provided on one end of the outer surface of the lock shell (1) close to the lock hole (11) of the shell, and the rear end of the reinforcing convex ring (14) is connected to two reinforcing strips (15) located on the outer surface of the lock shell (1), and the reinforcing strips (15) extend toward the rear end of the lock shell (1), and the two reinforcing strips (15) are arranged at intervals.