Rotary closure lock

Abstract

The utility model relates to the technical fields of lockset, especially related to rotation tightening type lockset, including lock body part, lock core part and lock bolt part, the lock body part includes lock body and limiting portion, and the lock core part is equipped with the lock pin matched with limiting portion, limiting portion includes the first limiting section, guide section and second limiting section connected along the circumference of lock cavity, and the first limiting section position is higher than the second limiting section position, and the guide section sets down to the second limiting section and inclines to the setting of orientation, when rotating lock core part, the lock pin moves along the path of first limiting section, guide section and second limiting section, to make lock core part and lock bolt part move along the axial movement of lock body while rotating. The rotation tightening type lockset can realize opening or locking with smaller rotation angle (90 DEG), and the operation is convenient and can reduce the time of opening or closing, solve the technical problem that the rotation angle of the existing rotation tightening type lockset is larger (more than 90 DEG) when opening or locking, and is not conducive to the quick opening or quick locking of lockset.

Description

Technical Field

[0001] This utility model relates to the technical field of locks, and particularly to a rotary tightening lock. Background Technology

[0002] Rotary locking locks use a handle or knob to drive the internal mechanical structure of the lock body, achieving linear and rotary movement of the bolt, thereby locking or unlocking the lock. They can be used as door locks or cabinet locks.

[0003] However, in existing rotary locking mechanisms, the linear and rotary movements of the bolt are performed sequentially. For example, a rotary bolt lock disclosed in Chinese utility model patent CN211229876U requires the lock cylinder to be rotated 90° to move the pivot and bolt backward simultaneously before opening the lock. Then, the lock cylinder must be rotated another 90° before the locking pin can drive the pivot and bolt to rotate 90°, thus opening the lock from a closed state. It is evident that existing rotary locking mechanisms require a relatively large rotation angle (exceeding 90°) for opening or locking, which is not conducive to rapid opening or locking. Utility Model Content

[0004] The main purpose of this utility model is to provide a rotary tightening lock. When the lock cylinder rotates 90°, the lock cylinder and the bolt can move axially while rotating. This allows the rotary tightening lock to be opened or locked with a small rotation angle (90°), making it convenient to operate and reducing the time for unlocking or locking. It solves the technical problem that existing rotary tightening locks require a large rotation angle (more than 90°) to open or lock, which is not conducive to the rapid opening or locking of the lock.

[0005] To achieve the above objectives, the present invention proposes a rotary tightening lock comprising: a lock body, a lock cylinder, and a latch; the lock body includes a lock body itself and a limiting part, wherein the lock body has a lock cavity with openings at both ends, and the limiting part is fixedly connected to the inner peripheral side wall of the lock body within the lock cavity; the lock cylinder is inserted into and protrudes from the lock cavity and is fixedly connected to the latch, and the lock cylinder is rotatably connected to the lock body; the lock cylinder is provided with a locking pin that cooperates with the limiting part, and the locking pin and the limiting part... The upper surfaces of the locking parts abut against each other; the limiting part includes a first limiting segment, a guide segment and a second limiting segment connected sequentially along the circumference of the lock cavity, the horizontal plane where the first limiting segment is located is higher than the horizontal plane where the second limiting segment is located, and the guide segment is inclined downward toward the second limiting segment; when the lock cylinder is rotated, the locking pin moves along the path of the first limiting segment, the guide segment and the second limiting segment, so that the lock cylinder and the locking tongue move along the axial direction of the lock body while rotating.

[0006] Optionally, the lock cylinder includes a rotating operating part and a lock shaft fixedly connected. The outer peripheral sidewall of the rotating operating part abuts against the inner peripheral sidewall of the lock body. The end of the lock shaft away from the rotating operating part is fixedly connected to the lock tongue. A through pin hole is provided on the sidewall of the lock shaft. The lock pin is inserted into the pin hole, and both ends of the lock pin protrude along the radial direction of the lock shaft. Two sets of limiting parts are provided. The two sets of limiting parts are fixedly connected end to end along the circumferential direction of the lock body, and the two sets of limiting parts respectively cooperate with the two ends of the lock pin.

[0007] Optionally, the rotary tightening lock further includes a spring; the spring is sleeved on the outer periphery of the lock shaft, and the spring is located at one end of the lock shaft near the latch; one end of the spring is fixedly connected to the lower end face of the limiting part inside the lock cavity, and the other end of the spring abuts against the upper end face of the latch.

[0008] Optionally, the rotary tightening lock further includes a hollow inner bushing; one end of the lock body near the latch is fitted onto the outer periphery of the inner bushing, and the inner bushing is movably connected to the lock body, while the inner periphery of the inner bushing is fixedly connected to the outer periphery of the lock shaft; one end of the spring member away from the limiting portion extends into the interior of the inner bushing, and the other end of the spring member away from the limiting portion movably abuts against the inner bushing.

[0009] Optionally, a locking groove is provided on the outer periphery of the lock shaft; the inner bushing includes a hollow bushing body and a locking part, the outer periphery of the bushing body is movably connected to the inner periphery of the lock body, the inner periphery of the bushing body is fixedly connected to the outer periphery of the locking part, and the inner periphery of the locking part is fixedly locked in the locking groove.

[0010] Optionally, the limiting part has an axial end face facing the locking tongue with a mounting groove for fixing the spring member, and an abutment groove is formed between the bushing body and the locking part. One end of the spring member is fixedly connected in the mounting groove, and the other end of the spring member is movably abutted in the abutment groove.

[0011] Optionally, the lock cylinder further includes a sealing ring, and a sealing groove is provided on the outer peripheral sidewall of the rotating operating part. The sealing groove is used to install and fix the sealing ring, and the outer peripheral side of the sealing ring abuts against the inner peripheral sidewall of the lock body.

[0012] Optionally, the latch portion includes a latch body and a guide sleeve, the guide sleeve being fitted onto the end of the latch body away from the lock cylinder portion; the guide sleeve includes a locking portion and two guide portions fixedly connected, the two guide portions being symmetrically connected to both ends of the locking portion in the direction of rotation; the outer diameter of the guide portions gradually decreases in the direction away from the locking portion.

[0013] Optionally, the rotary tightening lock further includes a fixing member, which includes a snap-fit ​​portion and a plug-in portion that are fixedly connected, and the snap-fit ​​portion extends outward along the radial direction of the plug-in portion; a fixing groove is formed on the end face of the lock shaft away from the rotary operating part, and the end of the plug-in portion away from the snap-fit ​​portion passes through the lock tongue and is inserted into the fixing groove, and the plug-in portion is detachably connected to the lock shaft in the fixing groove; the end face of the snap-fit ​​portion facing the lock tongue abuts against the lock tongue.

[0014] Optionally, the lock cylinder further includes a mounting portion, which is fixedly connected to the end of the lock shaft away from the rotating operating portion. The axis of the mounting portion coincides with the axis of the lock shaft, and the outer diameter of the mounting portion is smaller than the diameter of the lock shaft. The mounting portion has a communicating groove that matches the fixing groove, and the lock tongue has a mounting hole that matches the mounting portion. The mounting portion is fixedly inserted into the mounting hole. The end of the insertion portion away from the snap-fit ​​portion is sequentially inserted into the communicating groove and the fixing groove to fix the lock tongue.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention fixes the lock cylinder and the latch to a fixed connection and sets a limiting part inside the lock body. By setting a locking pin that cooperates with the limiting part (when the lock cylinder is rotated, the locking pin will move along the path of the first limiting section, the guide section and the second limiting section), when the lock cylinder is rotated 90°, the lock cylinder and the latch can move along the axial direction of the lock body while rotating. This allows the rotary tightening lock to be opened or locked with a small rotation angle (90°), which is convenient to operate and can reduce the time for unlocking or locking. It solves the technical problem that the existing rotary tightening locks require a large rotation angle (more than 90°) when opening or locking, which is not conducive to the rapid opening or locking of the lock. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rotary tightening lock according to an embodiment of the present invention; Figure 2 A bottom view of a rotary tightening lock according to an embodiment of the present invention; Figure 3 for Figure 2A three-dimensional sectional view at point HH (with the lock cylinder hidden); Figure 4 for Figure 2 A three-dimensional sectional view at point BB; Figure 5 This is a schematic diagram of the lock body of a rotary tightening lock according to an embodiment of the present invention; Figure 6 for Figure 2 A three-dimensional sectional view at point BB (only the lock cylinder and bolt are shown). Figure 7 This is an exploded view of a rotary tightening lock according to an embodiment of the present invention; Figure 8 This is a side view of the lock cylinder and the lock tongue of a rotary tightening lock according to an embodiment of the present invention.

[0017] In the attached diagram: 1. Lock body; 11. Lock body body; 111. Lock cavity; 12. Limiting part; 121. First limiting section; 122. Guide section; 123. Second limiting section; 124. Mounting groove; 2. Lock cylinder; 21. Locking pin; 22. Rotating operating part; 221. Sealing groove; 23. Lock shaft; 230. Pin hole; 231. Locking groove; 232. Fixing groove; 24. Mounting part; 241. Connecting groove; 3. Lock tongue; 31. Lock tongue body; 32. Guide sleeve; 321. Locking part; 322. Inlet part; 33. Mounting hole; 4. Inner bushing; 41. Bushing body; 42. Locking part; 43. Abutment groove; 5. Spring; 6. Fixing part; 61. Snap-fit ​​part; 62. Insertion part. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a fixed connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] To resolve the above technical issues, please refer to [link / reference]. Figures 1 to 4 The rotary tightening lock proposed in this utility model includes: a lock body 1, a lock cylinder 2, and a lock tongue 3; The lock body 1 includes a lock body 11 and a limiting part 12. The lock body 11 has a lock cavity 111 with openings at both ends. The limiting part 12 is fixedly connected to the inner peripheral side wall of the lock body 11 within the lock cavity 111. After the lock cylinder 2 is inserted into and passes through the lock cavity 111, it is fixedly connected to the lock tongue 3. The lock cylinder 2 is rotatably connected to the lock body 11. The lock cylinder 2 is provided with a locking pin 21 that cooperates with the limiting part 12. The locking pin 21 abuts against the upper surface of the limiting part 12. Please see Figure 3 The limiting part 12 includes a first limiting segment 121, a guide segment 122 and a second limiting segment 123 connected sequentially along the circumference of the locking cavity 111. The horizontal plane of the first limiting segment 121 is higher than the horizontal plane of the second limiting segment 123, and the guide segment 122 is inclined downward toward the second limiting segment 123. When the lock cylinder 2 is rotated, the locking pin 21 moves along the path of the first limiting section 121, the guide section 122 and the second limiting section 123, so that the lock cylinder 2 and the locking tongue 3 move along the axial direction of the lock body 11 while rotating, thereby realizing the opening or locking of the rotary tightening lock.

[0023] Specifically, when the rotary tightening lock is in the locked state, the locking pin 21 is limited to the first limiting section 121. When the lock cylinder 2 is rotated 90°, the lock cylinder 2 will drive the bolt 3 to rotate 90° as well. At the same time, when rotating the lock cylinder 2, the user needs to apply a certain pushing force in the axial direction of the bolt 3, so that the locking pin 21 on the lock cylinder 2 moves sequentially along the path of the first limiting section 121, the guide section 122, and the second limiting section 123 until the locking pin 21 is limited to the second limiting section 123 and stops. This causes the lock cylinder 2 and the bolt 3 to move downward along the axial direction of the lock body 11, thereby realizing the rotary tightening lock. When the rotary tightening lock is opened (the lock cylinder 2 and the bolt 3 rotate a total of 90° when the rotary tightening lock is opened); when the rotary tightening lock is closed, the lock cylinder 2 is rotated 90° in the opposite direction, and the bolt 3 rotates 90° in the opposite direction under the drive of the lock cylinder 2. At the same time, the locking pin 21 moves sequentially along the path of the second limiting segment 123, the guide segment 122 and the first limiting segment 121 until the locking pin 21 is re-limited in the first limiting segment 121 and stops, so that the lock cylinder 2 and the bolt 3 move upward along the axial direction of the lock body 11, thereby realizing the locking of the rotary tightening lock (the lock cylinder 2 and the bolt 3 rotate a total of 90° when the rotary tightening lock is locked).

[0024] By fixing the lock cylinder 2 and the latch 3 together, and setting the limiting part 12 inside the lock body 11, the locking pin 21 cooperates with the limiting part 12. When the lock cylinder 2 is rotated 90°, the lock cylinder 2 and the latch 3 can move along the axial direction of the lock body 11 while rotating. The rotary tightening lock can be opened or locked with a small rotation angle (90°). It is convenient to operate and can reduce the time for unlocking or locking. It solves the technical problem that the existing rotary tightening locks require a large rotation angle (more than 90°) when opening or locking, which is not conducive to the rapid opening or locking of the lock.

[0025] Please see Figure 4Furthermore, the lock cylinder 2 includes a rotating operating part 22 and a lock shaft 23 that are fixedly connected. The outer peripheral sidewall of the rotating operating part 22 abuts against the inner peripheral sidewall of the lock body 11, and the end of the lock shaft 23 away from the rotating operating part 22 is fixedly connected to the lock tongue 3. The side wall of the locking shaft 23 has a through pin hole 230, the locking pin 21 is inserted into the pin hole 230, and the two ends of the locking pin 21 protrude along the radial direction of the locking shaft 23 respectively. Please see Figure 5 The limiting part 12 is provided in two sets. The two sets of limiting parts 12 are fixedly connected end to end along the circumferential direction of the lock body 11, and the two sets of limiting parts 12 respectively cooperate with the two ends of the locking pin 21.

[0026] By setting two sets of limiting parts 12 connected end to end along the circumferential direction of the lock body 11, and the two sets of limiting parts 12 respectively corresponding to the two ends of the locking pin 21, it can be ensured that the two ends of the locking pin 21 are always in contact with the limiting parts 12 during rotation, thus preventing the locking pin 21 from coming out during rotation.

[0027] Please see Figure 3 and Figure 4 Furthermore, the rotary tightening lock also includes a spring element 5; The spring element 5 is sleeved on the outer periphery of the locking shaft 23, and the spring element 5 is located at the end of the locking shaft 23 near the locking tongue 3; One end of the spring member 5 is fixedly connected to the lower end face of the limiting part 12 inside the locking cavity 111, and the other end of the spring member 5 abuts against the upper end face of the locking tongue part 3.

[0028] When the rotary tightening lock is in the locked state, the spring 5 is in a compressed state. When the rotary tightening lock is opened, the lock cylinder 2 and the bolt 3 move downward along the axial direction of the lock body 11. At this time, the spring 5 releases its elastic force, thereby applying a pushing force to the bolt 3, further pushing the lock cylinder 2 and the bolt 3 to move. This makes it easier and smoother for the user to open the rotary tightening lock, and helps to speed up the opening process. When rotating the lock cylinder 2, the user does not need to apply a pushing force in the axial direction of the bolt 3 to allow the locking pin 21 on the lock cylinder 2 to move sequentially along the path of the first limiting section 121, the guide section 122, and the second limiting section 123, which can save effort when unlocking.

[0029] Furthermore, the rotating operating part 22 and the locking shaft 23 are integrally formed. Because the rotating operating part 22 and the locking shaft 23 are integrally formed, the mechanical structure of the entire lock cylinder 2 is simple and compact. Only the cooperation between the locking pin 21 and the limiting part 12 is needed to enable the locking tongue 3 to move axially while rotating. This allows for quick opening or locking of the rotary tightening lock with a small rotation angle (90°), making operation convenient and reducing the time required for unlocking or locking, thus providing a more user-friendly experience for the elderly or children.

[0030] Please see Figure 3 and Figure 4 Furthermore, the rotary tightening lock also includes a hollow inner bushing 4; The lock body 11 is fitted onto the outer periphery of the inner bushing 4 at one end near the latch 3, and the inner bushing 4 is movably connected to the lock body 11. The inner periphery of the inner bushing 4 is fixedly connected to the outer periphery of the lock shaft 23. The end of the spring member 5 away from the limiting part 12 extends into the interior of the inner bushing 4, and the end of the spring member 5 away from the limiting part 12 is in movable contact with the inner bushing 4.

[0031] By providing the inner bushing 4, when the lock cylinder 2 is rotated, the inner bushing 4 will rotate synchronously with the lock shaft 23 and move axially along the lock body 11. The inner bushing 4 provides protection for sections of the lock shaft 23 that may be exposed on the lock body 11 and sections of the spring member 5 when moving axially along the lock body 11. Specifically, the lower end face of the inner bushing 4 abuts against the upper end face of the latch 3.

[0032] When the rotary tightening lock is in the locked state, the spring 5 is in the compressed state. When the rotary tightening lock is opened, the lock cylinder 2 and the bolt 3 will move downward along the axial direction of the lock body 11. At this time, the spring 5 will release its elastic force, thereby applying a pushing force to the inner bushing 4, further pushing the lock cylinder 2 and the bolt 3 to move, making it easier and smoother for the user to open the rotary tightening lock, thus speeding up the opening process.

[0033] Please see Figure 4 and Figure 6 Furthermore, the outer periphery of the locking shaft 23 is provided with a locking groove 231; The inner bushing 4 includes a hollow bushing body 41 and a locking part 42. The outer peripheral side of the bushing body 41 is movably connected to the inner peripheral side of the lock body 11, and the inner peripheral side of the bushing body 41 is fixedly connected to the outer peripheral side of the locking part 42. The inner peripheral side of the locking part 42 is fixedly locked in the locking groove 231.

[0034] By setting the mutually cooperating locking groove 231 and locking part 42, the connection stability between the locking shaft 23 and the inner bushing 4 can be further improved, and the inner bushing 4 can be prevented from shifting in the axial direction of the locking shaft 23 during movement.

[0035] Please see Figure 4 Furthermore, the limiting part 12 has an axial end face facing the locking tongue part 3 with a mounting groove 124 for fixing the spring member 5. An abutment groove 43 is formed between the bushing body 41 and the locking part 42. One end of the spring member 5 is fixedly connected to the mounting groove 124, and the other end of the spring member 5 is movably abutted in the abutment groove 43.

[0036] The mounting groove 124 can be used to limit the movement of the spring 5.

[0037] Please see Figure 4 Furthermore, the lock cylinder 2 also includes a sealing ring, and a sealing groove 221 is provided on the outer peripheral sidewall of the rotating operation part 22. The sealing groove 221 is used to install and fix the sealing ring, and the outer peripheral side of the sealing ring abuts against the inner peripheral sidewall of the lock body 11.

[0038] By setting the sealing groove 221 and the sealing ring (not shown in the figure), the rotating operating part 22 can be sealed with the lock body 11, which can protect the limiting part 12, the locking shaft 23 and the locking pin 21, etc., and prevent foreign objects such as dust and moisture from entering the interior of the lock body 11, thus extending the service life of the rotating tightening lock.

[0039] Please see Figures 6 to 8 Furthermore, the latch portion 3 includes a latch body 31 and a guide sleeve 32, with the guide sleeve 32 sleeved on the end of the latch body 31 away from the lock cylinder portion 2; The guide sleeve 32 includes a locking part 321 and two guiding parts 322 that are fixedly connected. The two guiding parts 322 are symmetrically connected to both ends of the locking part 321 in the rotation direction. The outer diameter of the inlet portion 322 gradually decreases in the direction away from the locking portion 321.

[0040] Specifically, the rotation direction of the locking part 321 is consistent with the rotation direction of the locking shaft 23. By gradually reducing the outer diameter of the guide part 322 away from the locking part 321, when the lock cylinder 2 is rotated to lock the rotary tightening lock, the smaller outer diameter end of one of the guide parts 322 will preferentially cut into the door panel / cabinet panel to be locked, thereby playing a guiding role, improving the smoothness of rotation, and preventing the lock tongue 3 from getting stuck between the door panel / cabinet panel to be locked during rotation, which would affect its locking. When the locking part 321 is tightly attached to the door panel / cabinet panel to be locked, the locking of the rotary tightening lock is completed.

[0041] It should be noted that the shape and structure of the latch body 31 can be set to be the same as the latch structure commonly used in the prior art, and no specific limitation is made here. Specifically, the guide sleeve 32 is optionally made of nylon, which has good wear resistance.

[0042] Please see Figure 4 , Figures 6 to 7 Furthermore, the rotary tightening lock also includes a fixing member 6, which includes a snap-fit ​​part 61 and a plug-in part 62 that are fixedly connected, and the snap-fit ​​part 61 extends outward along the radial direction of the plug-in part 62. The locking shaft 23 has a fixing groove 232 on its end face away from the rotating operating part 22. The end of the plug-in part 62 away from the snap-fit ​​part 61 passes through the locking tongue part 3 and is inserted into the fixing groove 232. The plug-in part 62 is detached from the locking shaft 23 in the fixing groove 232. The end face of the latching part 61 facing the latching part 3 abuts against the latching part 3.

[0043] By setting the fixing member 6, the connection stability between the latch 3 and the locking shaft 23 can be further improved. When the lock cylinder 2 is rotated, the movement of the locking shaft 23 can be transmitted to the latch 3 through the fixing member 6, ensuring that the latch 3 can move with the locking shaft 23.

[0044] To further explain, the inner circumference of the fixing groove 232 is provided with an internal thread, the outer circumference of the insertion part 62 is provided with an external thread, and the insertion part 62 is threadedly connected to the fixing groove 232.

[0045] Please see Figures 6 to 7 Furthermore, the lock cylinder part 2 also includes a mounting part 24, which is fixedly connected to the end of the lock shaft 23 away from the rotating operation part 22. The axis of the mounting part 24 coincides with the axis of the lock shaft 23, and the outer diameter of the mounting part 24 is smaller than the diameter of the lock shaft 23. The mounting part 24 has a communicating groove 241 that matches the fixing groove 232, and the locking tongue part 3 has a mounting hole 33 that matches the mounting part 24. The mounting part 24 is fixedly inserted into the mounting hole 33. The end of the plug-in portion 62 away from the snap-fit ​​portion 61 is sequentially inserted into the communicating groove 241 and the fixing groove 232 to fix the locking tongue portion 3.

[0046] To further explain, the mounting hole 33 is formed in the latch body 31.

[0047] Since the outer diameter of the mounting part 24 is smaller than the diameter of the locking shaft 23, when the mounting part 24 is fixedly inserted into the mounting hole 33, the end face of the locking shaft 23 facing the locking tongue 3 will abut against the locking tongue 3. That is, when the end of the insertion part 62 away from the snap-fit ​​part 61 is sequentially inserted into the connecting groove 241 and the fixing groove 232, the two end faces of the locking tongue 3 will abut against the locking shaft 23 and the snap-fit ​​part 61 respectively, thereby making the locking tongue 3 fixedly connected to the locking shaft 23.

[0048] Furthermore, since the locking tongue 3 is confined between the locking shaft 23 and the fixing member 6 after assembly, the locking tongue 3 and the locking shaft 23 are detachable, which facilitates maintenance and replacement. Moreover, by setting the outer diameter of the mounting part 24 to be smaller than the diameter of the locking shaft 23, the locking shaft 23 and the locking tongue 3 abut against each other, which can further prevent the locking tongue 3 from shifting in the axial direction of the locking shaft 23, and help improve the connection stability between the locking tongue 3 and the locking shaft 23.

[0049] To further explain, the shape of the mounting part 24 is consistent with the shape of the radial cross section of the mounting hole 33. Specifically, the radial cross section of the mounting hole 33 is rectangular, which can further prevent the locking tongue 3 and the locking shaft 23 from rotating relative to each other, and ensure that the locking tongue 3 rotates simultaneously with the rotation of the locking shaft 23.

[0050] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A rotary tightening lock, characterized in that, include: Lock body, lock cylinder, and lock tongue; The lock body includes a lock body and a limiting part. The lock body has a lock cavity with openings at both ends. The limiting part is fixedly connected to the inner peripheral sidewall of the lock body within the lock cavity. After the lock cylinder is inserted into and passes through the lock cavity, it is fixedly connected to the lock tongue. The lock cylinder is rotatably connected to the lock body. The lock cylinder is provided with a locking pin that cooperates with the limiting part. The locking pin abuts against the upper surface of the limiting part. The limiting part includes a first limiting segment, a guide segment, and a second limiting segment connected sequentially along the circumference of the locking cavity. The horizontal position of the first limiting segment is higher than the horizontal position of the second limiting segment, and the guide segment is inclined downward toward the second limiting segment. When the lock cylinder is rotated, the locking pin moves along the path of the first limiting section, the guide section and the second limiting section, so that the lock cylinder and the locking tongue move along the axial direction of the lock body while rotating.

2. The rotary tightening lock according to claim 1, characterized in that, The lock cylinder includes a rotating operating part and a lock shaft that are fixedly connected. The outer peripheral sidewall of the rotating operating part abuts against the inner peripheral sidewall of the lock body. The end of the lock shaft away from the rotating operating part is fixedly connected to the lock tongue. The side wall of the locking shaft has a through pin hole, the locking pin is inserted into the pin hole, and both ends of the locking pin protrude along the radial direction of the locking shaft. The limiting part is provided in two sets. The two sets of limiting parts are fixedly connected end to end along the circumferential direction of the lock body, and the two sets of limiting parts respectively correspond to the two ends of the locking pin.

3. The rotary tightening lock according to claim 2, characterized in that, The rotary tightening lock also includes a spring component; The spring is sleeved on the outer periphery of the lock shaft, and the spring is located at the end of the lock shaft near the latch. One end of the spring is fixedly connected to the lower end face of the limiting part inside the lock cavity, and the other end of the spring abuts against the upper end face of the lock tongue.

4. The rotary tightening lock according to claim 3, characterized in that, The rotary tightening lock also includes a hollow inner bushing; The lock body body is fitted onto the outer periphery of the inner bushing at one end near the latch, and the inner bushing is movably connected to the lock body body. The inner periphery of the inner bushing is fixedly connected to the outer periphery of the lock shaft. The end of the spring member away from the limiting part extends into the interior of the inner bushing, and the end of the spring member away from the limiting part is in movable contact with the inner bushing.

5. The rotary tightening lock according to claim 4, characterized in that, The outer circumferential side of the lock shaft is provided with a locking groove; The inner bushing includes a hollow bushing body and a locking part. The outer peripheral side of the bushing body is movably connected to the inner peripheral side of the lock body body, and the inner peripheral side of the bushing body is fixedly connected to the outer peripheral side of the locking part. The inner peripheral side of the locking part is fixedly locked in the locking groove.

6. The rotary tightening lock according to claim 5, characterized in that, The limiting part has an axial end face facing the locking tongue part with a mounting groove for fixing the spring member. An abutment groove is formed between the bushing body and the locking part. One end of the spring member is fixedly connected in the mounting groove, and the other end of the spring member is movably abutted in the abutment groove.

7. The rotary tightening lock according to claim 2, characterized in that, The lock cylinder also includes a sealing ring. A sealing groove is provided on the outer peripheral sidewall of the rotating operating part. The sealing groove is used to install and fix the sealing ring. The outer peripheral side of the sealing ring abuts against the inner peripheral sidewall of the lock body.

8. The rotary tightening lock according to claim 2, characterized in that, The latch portion includes a latch body and a guide sleeve, the guide sleeve being sleeved on the end of the latch body away from the lock cylinder portion; The guide sleeve includes a locking part and two guide parts that are fixedly connected, and the two guide parts are symmetrically connected to both ends of the locking part in the direction of rotation. The outer diameter of the inlet portion gradually decreases in the direction away from the locking portion.

9. The rotary tightening lock according to claim 2, characterized in that, The rotary tightening lock also includes a fixing member, which includes a snap-fit ​​part and a plug-in part that are fixedly connected, and the snap-fit ​​part extends outward along the radial direction of the plug-in part; A fixing groove is provided on the end face of the locking shaft away from the rotating operating part. The end of the plug-in part away from the snap-fit ​​part passes through the locking tongue and is inserted into the fixing groove. The plug-in part is detachably connected to the locking shaft in the fixing groove. The end face of the latching part facing the latching tongue abuts against the latching tongue.

10. The rotary tightening lock according to claim 9, characterized in that, The lock cylinder also includes a mounting part, which is fixedly connected to the end of the lock shaft away from the rotating operating part. The axis of the mounting part coincides with the axis of the lock shaft, and the outer diameter of the mounting part is smaller than the diameter of the lock shaft. The mounting part has a communicating groove that matches the fixing groove, and the locking tongue part has a mounting hole that matches the mounting part. The mounting part is fixedly inserted into the mounting hole. The end of the plug portion away from the snap-fit ​​portion is sequentially inserted into the communicating groove and the fixing groove to fix the locking tongue portion.

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