Semicircular lock

Abstract

The utility model relates to a semicircle lock, including lock seat, handle, rotating shaft, locking subassembly, the middle part of lock seat is equipped with and sleeves the first mounting cavity of rotating shaft periphery, lock seat includes linkage column and guide structural member, the first mounting cavity passes through the middle part of linkage column along the axial direction of linkage column, the middle part of guide structural member is equipped with strip-shaped guide groove, and the guide structural member is equipped with the strip-shaped guide groove. The handle is arranged in the strip-shaped guide groove, arc-shaped faces which are symmetrically distributed are arranged at the two ends of the guide structural part, and an arc-shaped face is also arranged above the handle. According to the semicircular lock, the guide structural part is additionally arranged on the lock seat, and the strip-shaped guide groove is formed in the guide structural part. The handle is arranged in the strip-shaped guide groove, and when the handle is rotated, the rotating angle and whether the handle rotates in place or not can be visually judged according to the position, relative to the interior of the strip-shaped guide groove, of the handle.

Description

Technical Field

[0001] The utility model particularly relates to a semicircular lock. Background Art

[0002] Cabinet door locks are used to lock and unlock cabinet doors. Chinese utility model patent publication number "CN209924659U" discloses a cabinet door lock consisting of a handle, lock cylinder, rotating shaft, lock base, lock tongue, roller, and bolt. To unlock the cabinet door, you first insert the key and rotate the lock cylinder, which drives the bolt, allowing the rotating shaft and lock base to rotate interactively. Then, turning the handle causes the bolt to swing through the bolt plate, opening the cabinet door.

[0003] The cabinet door lock has the following defects:

[0004] First, in conjunction with the appendix to the specification of the public document Figure 1 It can be clearly seen that the lock seat is cylindrical, and the lower end of the rotating shaft is inserted in the middle of the lock seat. There is no structure on the lock seat to provide a prompt for the rotation angle of the handle. Whether it is facing the unlocking direction or the locking direction, it is impossible to determine when the handle is rotated to the right position to achieve accurate unlocking or locking.

[0005] Secondly, in conjunction with the appendix to the specification of the public document Figure 3 It can be clearly seen that the handle contains only a cylindrical lock core cavity, and there is no structure on the handle to limit the rotation angle of the lock core. When the key is inserted and the lock core is turned, it is impossible to determine when the lock core has rotated to the correct position. This can easily lead to excessive rotation of the lock core, resulting in the lock bolt not being able to accurately lock the rotation axis and the lock seat. Although a positioning lock pin is provided, its actual function is to position the lock core along the axial direction. Utility Model Content

[0006] The technical problem to be solved by the present invention is to address the above-mentioned shortcomings of the prior art and provide a semicircular lock. By adding a guide structure to the lock base and providing a strip-shaped guide groove thereon, the handle is positioned within the strip-shaped guide groove. When the handle is turned, the position of the handle relative to the strip-shaped guide groove can be used to intuitively determine the angle of rotation and whether it has been fully rotated.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a semicircular lock, comprising a lock seat, a handle, a rotating shaft, and a locking assembly for locking or unlocking the rotating shaft and the lock seat, the upper end of the rotating shaft and the middle part of the handle being integrally formed, the middle part of the lock seat being provided with a first mounting cavity which is sleeved on the outer circumference of the rotating shaft, and characterized in that: the lock seat comprises a linkage column and a guide structure, the upper end of the linkage column and the middle part of the guide structure being integrally formed, the first mounting cavity passing through the middle part of the linkage column along the axial direction of the linkage column, a strip guide groove being provided in the middle part and above the guide structure, the handle being provided in the strip guide groove, symmetrically distributed arc surfaces being provided at both ends of the guide structure, and an arc surface being also provided above the handle.

[0008] A guide structure is added to the lock seat, and a strip guide groove is provided on it. The handle is set in the strip guide groove. When the handle is turned, the angle of rotation and whether it is rotated in place can be intuitively judged by the position of the handle relative to the strip guide groove. This solves the problem of the existing technology that the rotation angle of the handle cannot be judged, so that the cabinet door lock can be accurately unlocked or locked during reuse. Furthermore, the strip guide groove not only provides a prompt for the rotation angle, but also makes the handle more stable during the rotation process and less likely to shake, thereby enhancing the overall structural strength of the cabinet door lock. At the same time, symmetrically distributed arc surfaces are provided at both ends of the guide structure, and an arc surface is also provided above the handle. When the handle is turned, the hand feels more comfortable, the operation is smoother, and the appearance is more beautiful.

[0009] It can be further configured as follows: a second installation cavity is provided in the middle part of the handle along the axial direction of the rotating shaft, which passes through the handle and the rotating shaft in sequence; the locking assembly includes a lock core, which is installed in the second installation cavity; the inner wall of the second installation cavity is provided with a blade groove structure adapted to the blade in the lock core; the outer peripheral surface of the lock core is provided with several groups of square protrusions arranged at intervals along the circumferential direction; and a limit block is provided in the second installation cavity.

[0010] Several groups of square bumps on the outer surface of the lock cylinder cooperate with the stop blocks in the second mounting cavity to limit the rotation range of the lock cylinder. When the lock cylinder reaches a preset position, the square bumps contact the stop blocks, preventing further rotation of the lock cylinder. This design not only improves locking accuracy but also ensures that the lock bolt accurately locks the shaft and lock seat.

[0011] It can be further configured as follows: the inner wall of the second installation cavity is further provided with a limit stop surface distributed at the lower end of the limit block.

[0012] The limit stop surface is set to limit the lock core along the axial direction to prevent the lock core from moving up and down.

[0013] It can be further configured as follows: the locking assembly also includes a lock bolt, an eccentric block is provided at the lower end of the lock core, a bar slot is provided on the lock bolt, the eccentric block is inserted into the bar slot, a sliding groove is provided on the rotating shaft, the lock bolt is installed in the sliding groove, and a socket is provided on the linkage column corresponding to the sliding groove.

[0014] By installing an eccentric block at the lower end of the lock cylinder, which cooperates with the bar-shaped slot on the lock bolt, when the lock cylinder rotates, the eccentric block moves within the bar-shaped slot and pushes the lock bolt to slide along the sliding groove of the rotating shaft. This ensures that the rotation of the lock cylinder is effectively converted into axial movement of the lock bolt, thereby achieving precise locking or unlocking between the rotating shaft and the lock seat.

[0015] It can be further configured as follows: a square column is provided at the end of the rotating shaft away from the handle, and fan-shaped protrusions symmetrically distributed on both sides of the direction column are provided at the end of the linkage column.

[0016] The square column is used to connect the lock tongue, and the fan-shaped protrusion is used to limit the swing angle of the lock tongue.

[0017] It can be further configured as follows: a strip-shaped guide installation groove is provided on the outside of the linkage column.

[0018] The base is easy to install on the cabinet door.

[0019] It can be further configured as follows: a reinforcing rib is provided on the end surface of the handle facing the strip guide groove, and weight-reducing holes are symmetrically provided on both sides of the lower end of the guide structure.

[0020] The structural strength of the handle is improved by providing reinforcing ribs, and the weight of the guide structure is reduced by providing weight-reducing holes.

[0021] It can be further configured that the handle, the rotating shaft and the lock seat are all made of plastic materials.

[0022] Plastic materials are not only lightweight but also low in cost.

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded diagram of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of a lock core according to an embodiment of the present utility model;

[0026] Figure 3 A schematic diagram of a handle according to an embodiment of the present utility model;

[0027] Figure 4 A schematic diagram of a lock seat according to an embodiment of the present utility model;

[0028] Figure 5A schematic diagram of a rotating shaft according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of an assembled state of an embodiment of the present utility model;

[0030] Figure 7 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0031] Handle 1, rotating shaft 2, first mounting cavity 3, linkage column 4, guide structure 5, strip guide groove 6, second mounting cavity 7, lock core 8, blade groove structure 9, square protrusion 10, limit block 11, limit stop surface 12, lock bolt 13, sliding groove 14, socket 15, eccentric block 16, square column 17, guide mounting groove 18, reinforcing rib 19, weight reduction hole 20, fan-shaped protrusion 21. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 7 The semicircular lock shown includes a lock base, a handle 1, a rotating shaft 2, and a locking assembly for locking or unlocking the rotating shaft 2 and the lock base. The upper end of the rotating shaft 2 is integrally formed with the middle portion of the handle 1. The middle portion of the lock base is provided with a first mounting cavity 3 that is sleeved around the outer periphery of the rotating shaft 2. The lock base includes a linkage column 4 and a guide structure 5. The upper end of the linkage column 4 is integrally formed with the middle portion of the guide structure 5. The first mounting cavity 3 extends axially through the middle portion of the linkage column 4. A strip guide groove 6 is provided in the middle and above the guide structure 5. The handle 1 is disposed within the strip guide groove 6. The guide structure 5 has symmetrically distributed arcuate surfaces at both ends, and the handle 1 also has an arcuate surface above it. By adding the guide structure 5 to the lock base and providing the strip guide groove 6 thereon, the handle 1 is disposed within the strip guide groove 6. When the handle 1 is rotated, the position of the handle 1 relative to the strip guide groove 6 can be intuitively determined to determine the angle of rotation and whether it has been fully rotated. Furthermore, the strip-shaped guide groove 6 not only provides a guide for the rotation angle, but also makes the handle 1 more stable during rotation, preventing it from shaking, thereby enhancing the overall structural strength of the cabinet door lock. At the same time, the guide structure 5 has symmetrically distributed curved surfaces at both ends, and the handle 1 also has a curved surface above it. This makes turning the handle 1 more comfortable, smoother, and more aesthetically pleasing.

[0034] A second mounting cavity 7 is defined in the middle of handle 1, axially extending through the handle and shaft 2. The locking assembly includes a lock cylinder 8, which is mounted within this second mounting cavity 7. The inner wall of this second mounting cavity 7 is provided with a blade groove structure 9 that mates with the blades within the lock cylinder 8. The outer circumference of the lock cylinder 8 is provided with four sets of circumferentially spaced square bumps 10. A stop block 11 is also located within this second mounting cavity 7. When the lock cylinder 8 is rotated to a predetermined position, the square bumps 10 contact the stop block 11, preventing further rotation of the lock cylinder 8. This design not only improves locking accuracy but also ensures that the bolt accurately locks the shaft 2 and the lock base.

[0035] The inner wall of the second installation cavity 7 is further provided with a limiting stop surface 12 distributed at the lower end of the limiting block 11, which can limit the lock core 8 along the axial direction to prevent the lock core 8 from moving up and down.

[0036] The locking assembly also includes a bolt 13. An eccentric weight 16 is located at the lower end of the lock cylinder 8. The bolt 13 is provided with a strip-shaped slot into which the eccentric weight 16 is inserted. The rotating shaft 2 is provided with a sliding groove 14 into which the bolt 13 is mounted. The linkage column 4 is provided with a socket 15 corresponding to the sliding groove 14. When the lock cylinder 8 rotates, the eccentric weight 16 moves within the strip-shaped slot and pushes the bolt 13 along the sliding groove 14 of the rotating shaft 2. This ensures that the rotation of the lock cylinder 8 is effectively converted into axial movement of the bolt 13, thereby achieving precise locking or unlocking between the rotating shaft 2 and the lock base.

[0037] The end of the shaft 2 away from the handle 1 is provided with a square column 17 for connecting the lock tongue. The end of the linkage column 4 is provided with fan-shaped protrusions 21 symmetrically distributed on both sides of the direction column for limiting the swing angle of the lock tongue.

[0038] A strip-shaped guide installation groove 18 is provided on the outside of the linkage column 4 to facilitate the installation of the base on the cabinet door.

[0039] The end surface of the handle 1 facing the strip guide groove 6 is provided with a reinforcing rib 19 to enhance the structural strength of the handle 1. The lower end of the guide structure 5 is symmetrically provided with weight-reducing holes 20 on both sides to reduce the weight of the guide structure 5.

[0040] The handle 1, the rotating shaft 2 and the lock seat are all made of plastic materials, which are not only light in weight but also low in cost.

Claims

1. A semicircular lock comprising a lock base, a handle, a rotating shaft, and a locking assembly for locking or unlocking the rotating shaft and the lock base. The upper end of the rotating shaft and the middle portion of the handle are integrally formed. The middle portion of the lock base is provided with a first mounting cavity that sleeves on the outer circumference of the rotating shaft. The lock base is characterized by: The lock seat includes a linkage column and a guide structure. The upper end of the linkage column and the middle part of the guide structure are integrally formed. The first installation cavity passes through the middle part of the linkage column along the axial direction of the linkage column. A strip guide groove is provided in the middle and above the guide structure. The handle is provided in the strip guide groove. The two ends of the guide structure are provided with symmetrically distributed arc surfaces, and an arc surface is also provided above the handle.

2. The semicircular lock according to claim 1, characterized in that: A second mounting cavity is provided in the middle of the handle along the axial direction of the rotating shaft, which passes through the handle and the rotating shaft in sequence. The locking assembly includes a lock core, which is installed in the second mounting cavity. The inner wall of the second mounting cavity is provided with a blade groove structure adapted to the blade in the lock core. The outer peripheral surface of the lock core is provided with several groups of square protrusions arranged at intervals along the circumferential direction, and a limit block is provided in the second mounting cavity.

3. The semicircular lock according to claim 2, characterized in that: The inner wall of the second installation cavity is further provided with a limiting stop surface distributed at the lower end of the limiting block.

4. The semicircular lock according to claim 3, characterized in that: The locking assembly also includes a lock bolt, an eccentric block is provided at the lower end of the lock core, a bar slot is provided on the lock bolt, the eccentric block is inserted into the bar slot, a sliding groove is provided on the rotating shaft, the lock bolt is installed in the sliding groove, and a jack is provided on the linkage column corresponding to the sliding slot.

5. The semicircular lock according to claim 4, characterized in that: A square column is provided at the end of the rotating shaft away from the handle, and fan-shaped protrusions symmetrically distributed on both sides of the direction column are provided at the end of the linkage column.

6. The semicircular lock according to claim 5, characterized in that: A strip-shaped guide installation groove is provided on the outside of the linkage column.

7. The semicircular lock according to claim 6, characterized in that: The end surface of the handle facing the strip-shaped guide groove is provided with a reinforcing rib, and weight-reducing holes are symmetrically provided on both sides of the lower end of the guide structure.

8. The semicircular lock according to claim 7, characterized in that: The handle, shaft and lock seat are all made of plastic.

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