Multi-clamping-point lock

Abstract

A multi-clamping-point lock comprises a base assembly, a lock rod and a locking assembly, a movable cavity is formed in the base assembly, the locking assembly is arranged in the movable cavity in an up-down sliding mode, a hollow lock hole is formed in the locking assembly, the lock hole is matched with the lock rod in size, an annular clamping groove is formed in the upper end of the lock rod, and the annular clamping groove is matched with the lock rod in size. The locking assembly is characterized in that the lower portion of the movable cavity is in the shape of a circular truncated cone inclining inwards, and the outer face of a steel ball hole for the steel balls to move is opened, so that the steel balls can abut against and be matched with the wall face of the lower portion of the movable cavity. Therefore, the expansion amount of the steel balls is controlled to clamp the lock rod through the inclination of the circular truncated cone of the base assembly and the height of the locking assembly, when the locking assembly moves downwards, the steel balls clamp the lock rod more tightly inwards, and the locking device has the advantages of being simple in structure, firm, durable, reliable in performance and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a multi-locking point lock. Background Art

[0002] Locks are used in different environments and with different lock structures to provide the best user experience and results. Plug-in card locks on the market usually have only one card point for fixing. When users use them for a long time and cause wear and tear, the card point structure will become unstable. If it is pulled forcibly, the lock may be accidentally unlocked and the internal parts of the lock may be damaged, thus affecting the operation of the lock and the user's experience. Therefore, the market needs a lock with a stable internal structure and is sturdy and reliable.

[0003] After investigation, patent number CN200620025734.6 discloses a circular mortise lock for locomotive vehicles, including a lock cylinder and a lock body. The lock cylinder includes a head, a locking rod, a lock groove, and a lock tip, characterized in that the lock groove is arc-shaped along the axial cross-section of the locking rod, and a locking rod hole for movably cooperating with the locking rod is horizontally arranged at the lower part of the lock body. A spring chamber with a diameter larger than the diameter of the locking rod hole is arranged above the locking rod hole and is located in the same plane as the axis of the locking rod hole and is inclined at an angle to the locking rod hole. The above two holes intersect at a position near the opening end of the locking rod hole, and the spring chamber is sequentially equipped with a steel ball and a spring that movably cooperate with the cylindrical hole wall in the spring chamber, and the hole opening is closed by a plug. This product only has one cylindrical hole wall and a steel ball to cooperate with the steel ball. If wear or damage occurs, it will affect the user experience and the operation of the lock, and the cylindrical hole wall and the steel ball must be aligned, inserted and fixed to complete the locking, which will waste the user's time for alignment and is inconvenient to operate.

[0004] Upon investigation, patent number CN201410664846.5 discloses a handle with a bidirectional detachable transmission connection and an automatic locking device. The handle comprises a handle body rotatably connected to a rod body, the rod body having an annular toothed portion located within the handle body; the handle body having a cavity within which a bidirectional adjustment handle hingedly connected to the handle body is located; the bidirectional adjustment handle has a hinge hole, and a reverse meshing portion and a forward meshing portion symmetrically located on either side of the hinge hole; a pulling portion extending outward from the reverse meshing portion or the forward meshing portion to the outside of the handle body; and the annular toothed portion, reverse meshing portion, and forward meshing portion are all triangular teeth. The handle of the present invention realizes a counterclockwise or clockwise transmission connection between the handle body and the nut. When rotating in the reverse direction, the triangular teeth will exert an outward force, so that the handle body and the nut are in a separated state, thereby realizing a two-way detachable transmission connection between the handle body and the nut. It is suitable for connection in a narrow space and can be operated without tools. Due to processing errors or temporary damage to the steel ball hole, steel ball, retraction groove and its locking groove, it cannot self-adjust to control the extension and contraction of the steel ball, which can easily cause the locking of the locking rod to fail or be locked, affecting normal use, and further improved design is needed. Summary of the Invention

[0005] The utility model mainly proposes a multi-card point lock to solve the problems of the existing technology. The lock has a reasonable and simple structure, can adjust and control the expansion and contraction of the steel ball, realizes the effective locking and unlocking of the lock rod, has reliable performance and is easy to operate.

[0006] The technical solution of the present utility model is: a multi-card point lock, comprising a base component, a locking rod, a locking component, an active cavity being provided inside the base component, a locking component being provided in the active cavity which can slide up and down, a hollow locking hole being provided in the locking component, the size of the locking hole being matched with the locking rod, an annular slot being provided at the upper end of the locking rod, a plurality of steel balls cooperating with the annular slots being distributed on the circumference of the inner wall of the lock hole of the locking component, characterized in that the lower part of the active cavity is in the shape of a frustum inclined inwardly, the steel ball hole for the movement of the steel ball is a through hole, so that the steel ball can be in contact with and cooperate with the lower wall surface of the active cavity, thereby controlling the extension and contraction amount of the steel ball to clamp the locking rod by the inclination of the frustum of the base component and the height of the locking component, and the further down the locking component is, the more inwardly the steel ball clamps the locking rod and the tighter it clamps the locking rod.

[0007] Furthermore, the locking assembly includes a movable shaft, the bottom of the movable shaft is in a truncated cone shape and matches the movable cavity of the base assembly, and a convex ring is provided on the upper part of the movable shaft.

[0008] Furthermore, the base assembly includes a base, a cover plate is fixed on the top of the base, a spring groove is provided on the bottom of the cover plate, one end of the spring is fixed to the spring groove, and the other end of the spring is matched with the convex ring. The spring always applies a downward force to prevent accidental unlocking.

[0009] Furthermore, a wrench platform is connected and extended from one side of the base, and a matching wrench cover is also extended from the cover plate. A wrench cavity is formed between the wrench cover and the wrench platform, and an unlocking wrench is provided in the wrench cavity. A fulcrum is provided in the middle of the wrench platform, which cooperates with the middle part of the unlocking wrench to form a lever.

[0010] Furthermore, one end of the unlocking wrench is a prying part, and the other end of the unlocking wrench is a clamping part which is arranged at the bottom of the convex ring and matches therewith. When the prying part is pressed, the clamping part will lift the movable shaft through the convex ring, thereby achieving unlocking.

[0011] Furthermore, a limiting column is provided on the wrench platform, and correspondingly, a limiting hole is provided in the middle of the unlocking wrench to match it to achieve connection.

[0012] Furthermore, the fulcrum portion is an independent component embedded in the wrench platform, and the limit column is covered with a limit column spring. Furthermore, the outer wall of the lock rod is provided with a slide groove, and the outer wall of the lock rod is covered with a locking assembly, and a circular hole is formed on one side of the locking assembly, and a set screw is passed through the circular hole and fixed to the slide groove.

[0013] Furthermore, the locking assembly includes a locking part and a wrench part, a threaded part extends from the bottom of the locking part, and a threaded hole is provided on the top of the corresponding wrench part to achieve threaded connection and fixation, and a locking spring is provided at the bottom of the locking part, which conflicts with the end with an increased diameter on the bottom of the locking rod, and the locking spring always applies an upward force.

[0014] Finally, there are at least two steel balls and steel ball holes, and preferably 3 to 4 steel balls and steel ball holes, which are evenly distributed in the circumferential direction.

[0015] Compared with the existing technology, the advantages of this product are: the steel balls match the annular grooves, and when the movable shaft slides to different positions in the movable cavity, different degrees of locking are achieved, and the operation of adjusting different degrees of locking is simple and convenient. Compared with the traditional lock with one card point, multiple card points are added to ensure the safety factor of lifting and increase the tension coefficient. Even if several steel balls and annular grooves are damaged, the lock can still maintain stable operation. The locking rod and the steel balls can be easily installed without considering the error. The failure rate of the lock is extremely low, and the unlocking can be quickly completed by turning the unlocking wrench, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of Example 1 of the utility model.

[0017] Figure 2 This is a schematic diagram of the exploded structure of Example 1 of the utility model from above.

[0018] Figure 3This is a bottom-view exploded structure diagram of Example 1 of the present utility model.

[0019] Figure 4 This is a cross-sectional view of Example 1 of the present utility model.

[0020] Figure 5 This is a schematic diagram of the explosion structure of Example 2 of the present utility model.

[0021] Figure 6 This is a cross-sectional view of Example 2 of the present utility model.

[0022] Figure 7 This is a bottom-view exploded structure diagram of Example 2 of the present utility model.

[0023] In the figure, 1. base assembly, 2. locking rod, 3. locking assembly, 4. movable cavity, 5. locking hole, 6. annular groove, 7. steel ball, 8. movable shaft, 9. convex ring, 10. base, 11. cover plate, 12. spring groove, 13. spring, 14. screw hole, 15. fixing hole, 16. screw, 17. wrench platform, 18. wrench cavity, 19. unlocking wrench, 20. wrench cover, 21. fulcrum part, 22. limiting column, 23. limiting hole, 24. bend part, 25. clamp part, 26. slide groove, 27. locking assembly, 28. set screw, 29. locking part, 30. wrench part, 31. threaded part, 32. threaded hole, 33. locking spring, 34. end, 35. steel ball hole, 36. branch, 37. limiting column spring. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation methods of the present utility model patent in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model patent, but cannot be used to limit the scope of the present utility model patent. In the description of the present utility model patent, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model patent. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model in specific contexts.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] according to Figures 1 to 4 The lock assembly 3 is a plurality of locking devices, each of which is provided with a plurality of locking devices, and the locking device 3 is a plurality of locking devices that can be locked.

[0029] The locking assembly 3 includes a movable shaft 8. The bottom of the movable shaft 8 is truncated cone-shaped to match the movable cavity 4 of the base assembly 1. A raised ring 9 is provided on the upper portion of the movable shaft 8. There are at least two steel balls 7 and steel ball holes 35, and preferably three to four steel balls 7 and steel ball holes 35 are evenly distributed along the circumference.

[0030] Base assembly 1 includes a base 10, with a cover plate 11 fixed to the top of base 10. Typically, screw holes 14 are provided at the four corners of base 10. Correspondingly, cover plate 11 has fixing holes 15 at corresponding locations. Screws 16 pass through fixing holes 15 and are secured in screw holes 14, securing base 10 and cover plate 11 together. A spring slot 12 is provided at the bottom of cover plate 11. One end of spring 13 is secured to spring slot 12, while the other end of spring 13 engages with protruding ring 9. Spring 13 constantly applies a downward force to prevent accidental unlocking of locking bar 2.

[0031] A wrench platform 17 extends from one side of the base 10, and a matching wrench cover 20 extends from the cover plate 11. When the wrench cover 20 and the wrench platform 17 are aligned, a wrench cavity 18 is formed between them. An unlocking wrench 19 is provided in the wrench cavity 18. A fulcrum 21 is provided in the middle of the wrench platform 17, which cooperates with the middle of the unlocking wrench 19 to form a lever. One end of the unlocking wrench 19 is a prying portion 24, and the other end of the unlocking wrench 19 is a clamping portion 25 and is located at the bottom of the convex ring 9 and matches therewith. When the prying portion 24 is pressed, the clamping portion 25 will lift the movable shaft 8 through the convex ring 9, thereby unlocking the locking rod 2. Of course, to further restrict the unlocking wrench 19, a limiting post 22 is provided on the wrench platform 17, and a corresponding limiting hole 23 is provided in the middle of the unlocking wrench 19 to match it, achieving mutual connection.

[0032] The outer wall of the locking rod 2 is provided with a slot 26, and a locking assembly 27 is sleeved thereon. A circular hole is formed on one side of the locking assembly 27, through which a set screw 28 passes to secure the locking assembly 27 to the slot 26. The locking assembly 27 comprises a locking portion 29 and a wrench portion 30. A threaded portion 31 extends from the bottom of the locking portion 29, and a corresponding threaded hole 32 is provided at the top of the wrench portion 30, enabling a threaded connection. A locking spring 33 is located at the bottom of the locking portion 29. This spring 33 abuts against an enlarged diameter end 34 at the bottom of the locking rod 2, exerting a constant upward force. When unlocked, the locking rod 2 is forced downward by the spring 33, allowing it to quickly spring open for convenient use.

[0033] When the user uses this product to lock, he only needs to align the locking rod 2 with the locking hole 5 at the bottom of the locking assembly 3 and insert it into the locking hole 5. Normally, the steel ball 7 in the locking assembly 3 will contact the locking rod 2, causing the steel ball 7 to move outward and possibly contact the round table surface of the base assembly 1 and rise appropriately to adjust the expansion and contraction of the steel ball 7, ensuring that the steel ball 7 in the steel ball hole 35 is clamped and fixed with the annular groove 6, and the spring 13 applies a downward force to the movable shaft 8 to prevent accidental unlocking and increase the firmness of the lock.

[0034] When the user uses this product to unlock, he only needs to press the prying part 24 of the unlocking wrench 19 with his hand, and use the lever principle through the fulcrum part 21 to drive the convex ring 9 through the clamping part 25, so that the movable shaft 8 slides up in the movable cavity 4, and the extension and contraction amount of the steel ball 7 is controlled by the inclination of the cone of the base assembly 1 and the height of the locking assembly 3, so that the steel ball 7 is disengaged from the annular groove 6 to complete the unlocking.

[0035] Example 2

[0036] Different from the embodiment 1, in another structural design, the fulcrum is made into an independent component branch 36 embedded in the middle of the wrench platform 17, and the wrench platform 17 is wrapped with a limit column spring 37 on the outer wall of the limit column 22, always applying an upward force, which can also achieve a similar effect. Other similarities are the same as the embodiment 1, see Figures 5-7 .

Claims

1. A multi-point lock, comprising a base assembly, a locking rod, and a locking assembly. The base assembly is provided with a movable cavity inside, and a locking assembly is provided in the movable cavity so as to slide up and down. The locking assembly is provided with a hollow lock hole, the lock hole and the size of the locking rod are matched. The upper end of the locking rod is provided with an annular groove. The locking assembly has a plurality of steel balls distributed around the inner wall of the lock hole that match the annular groove. The lower part of the movable cavity is an inward-inclined frustum, and the steel ball hole for the steel ball to move is a through hole, so that the steel ball can cooperate with the lower wall of the movable cavity, thereby controlling the extension and contraction of the steel ball to clamp the locking rod through the inclination of the frustum of the base assembly and the height of the locking assembly. The further down the locking assembly is, the tighter the steel ball clamps the locking rod.

2. A multi-point lock according to claim 1, characterized in that The locking assembly comprises a movable shaft, the bottom of which is in a truncated cone shape and matches the movable cavity of the base assembly, and a convex ring is provided on the upper part of the movable shaft.

3. A locking point lock according to claim 2, characterized in that The base assembly includes a base, a cover plate fixed on the top of the base, a spring groove provided on the bottom of the cover plate, one end of the spring is fixed to the spring groove, and the other end of the spring cooperates with the convex ring. The spring always applies a downward force to prevent accidental unlocking.

4. A multi-point lock according to claim 3, characterized in that A wrench platform is connected and extended from one side of the base, and a matching wrench cover is also extended from the cover plate. A wrench cavity is formed between the wrench cover and the wrench platform, and an unlocking wrench is arranged in the wrench cavity. A fulcrum is provided in the middle of the wrench platform, which cooperates with the middle part of the unlocking wrench to form a lever.

5. A multi-point lock according to claim 4, characterized in that One end of the unlocking wrench is a prying part, and the other end of the unlocking wrench is a clamping part which is arranged at the bottom of the convex ring and matches therewith. When the prying part is pressed, the clamping part will lift the movable shaft through the convex ring, thereby achieving unlocking.

6. A multi-point lock according to claim 5, characterized in that The wrench platform is provided with a limiting column, and correspondingly, the middle part of the unlocking wrench is provided with a limiting hole to match it to achieve connection.

7. The multi-point lock according to claim 6, characterized in that The fulcrum portion becomes an independent component embedded in the wrench platform, and a limiting column spring is sleeved on the limiting column.

8. The multi-point lock according to claim 1, characterized in that A sliding groove is provided on the outer wall of the locking rod, and a locking component is sleeved on the outer wall of the locking rod. A round hole is opened on one side of the locking component, and a set screw passes through the round hole and is fixed to the sliding groove.

9. The multi-point lock according to claim 8, characterized in that The locking assembly includes a locking part and a wrench part. A threaded part extends from the bottom of the locking part, and a threaded hole is provided on the top of the corresponding wrench part to achieve threaded connection and fixation. A locking spring is provided at the bottom of the locking part, and the locking spring conflicts with the end with an increased diameter on the bottom of the locking rod. The locking spring always applies an upward force.

10. The multi-point lock according to claim 1, characterized in that There are at least two steel balls and steel ball holes, preferably 3 to 4 steel balls and steel ball holes, which are evenly distributed in the circumferential direction.

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