Circular structure connection lock

Abstract

A circular connecting lock includes a female latch and a locking pin that mates with the female latch. The locking pin is freely detachable from the female latch. The locking pin includes a main body section with a groove on the main body section. The female latch includes an upper lock body, a lower lock body installed on the upper lock body, an inner sleeve installed inside the lower lock body, a latch located inside the upper lock body, and springs and buttons located on both sides of the latch. The buttons extend from the upper lock body, and the two ends of the springs abut against the upper lock body and the latch. When the locking pin is installed with the female latch, the springs compress the latch, causing the latch to engage with the groove on the locking pin, thereby locking the locking pin onto the female latch. The main body section of the locking pin extends into the inner sleeve, and the inner sleeve fits tightly with the main body section of the locking pin. This utility model has a simple overall structure, is easy to assemble, and effectively improves production efficiency.

Description

Technical Field

[0001] This utility model relates to a bag lock, and more particularly to a circular connecting lock. Background Technology

[0002] Luggage locks are locks specifically designed for luggage, backpacks, handbags, and other luggage products. The lock consists of two parts: a male buckle and a female buckle. The male buckle and female buckle are installed on the main body and the lid of the luggage, respectively. When the male buckle and female buckle are installed together, the lid of the luggage can be tightly closed on the main body.

[0003] Regarding existing bag lock structures, some manufacturers use high-rigidity metal materials for the locking pin on the male buckle and the lock body on the female buckle to improve product quality and rigidity. However, when the male buckle is installed on or removed from the female buckle, the tight fit between the locking pin and the female buckle can easily scratch the outer surface of the locking pin, affecting the product's appearance and causing inconvenience to users. Furthermore, some existing bag lock structures are complex in overall design, making them inconvenient to manufacture and assemble, increasing production costs, reducing production efficiency, and causing problems for manufacturers. Utility Model Content

[0004] Therefore, it is necessary to provide a circular connection lock to address the shortcomings of existing technologies.

[0005] A circular connecting lock includes a female latch and a locking pin that mates with the female latch. The locking pin is freely detachable from the female latch. The locking pin includes a main body section with a groove on the main body section. The female latch includes an upper lock body, a lower lock body installed on the upper lock body, an inner sleeve installed inside the lower lock body, a latch located inside the upper lock body, springs and buttons located on both sides of the latch. The buttons extend from the upper lock body, and the two ends of the springs abut against the upper lock body and the latch. When the locking pin is installed with the female latch, the spring compresses the latch, causing the latch to lock into the groove of the locking pin, thereby locking the locking pin onto the female latch. The main body section of the locking pin extends into the inner sleeve, and the inner sleeve fits tightly with the main body section of the locking pin. When it is necessary to remove the locking pin from the female latch, pressing the button inward pushes the button to adjust the latch horizontally, the spring elastically contracts, the latch exits from the groove, and the locking pin is then removed outward.

[0006] In one embodiment, the upper lock body is provided with a receiving groove, a mating hole and an adjusting hole. The spring and the latch are disposed in the receiving groove of the upper lock body. The button passes through the adjusting hole from the inside of the receiving groove. When the locking pin is installed on the female latch, the locking pin is inserted from the mating hole.

[0007] In one embodiment, the receiving groove extends inward from the middle of one end of the upper lock body along the main axis of the upper lock body, and the mating hole extends inward from the middle of the other end of the upper lock body along the main axis of the upper lock body. The receiving groove and the mating hole are interconnected, and the inner diameter of the mating hole is larger than the outer diameter of the main body section. The adjusting hole extends inward from the outer side of the upper lock body along a direction perpendicular to the main axis of the upper lock body, and the adjusting hole is interconnected with the receiving groove.

[0008] In one embodiment, the latch is provided with a through hole that passes through the latch along the main axis. When the button is released, the spring compresses the latch and the button, and the side of the latch closest to the spring extends into the mating hole and is located on the movement path of the locking pin.

[0009] In one embodiment, one end of the main body segment is provided with a snap-in head, the outer surface of which is spherical. During the insertion of the locking pin, the snap-in head on the locking pin extends into the through hole through the guide of its spherical surface and squeezes the latch, causing the latch to move toward the spring.

[0010] In one embodiment, the latch is provided with a fixing groove and a fixing hole on opposite sides, the button is provided with a limiting block and a locking head connected to one end of the limiting block, the two ends of the spring abut against the groove wall of the receiving groove and the fixing groove of the latch, the locking head of the button is locked in the fixing hole, and the end of the button away from the locking head passes through the fixing hole.

[0011] In one embodiment, the outer shape of the limiting block is larger than the inner diameter of the adjusting hole. After the button is released, the limiting block of the button abuts against the wall of the receiving groove.

[0012] In one embodiment, the lower lock body is provided with a positioning groove, and the inner sleeve is provided with a locking hole. The locking hole penetrates the inner sleeve along the main axis direction, and the inner diameter of the locking hole near one end of the opening gradually narrows from the outside to the inside to form a guide surface. The inner sleeve is installed in the positioning groove of the lower lock body, and the guide surface on the inner sleeve is located near the opening of the positioning groove.

[0013] In one embodiment, the outer peripheral surface of the inner sleeve is provided with a rib, and the groove wall of the positioning groove is provided with an inner groove, and the rib is engaged in the inner groove.

[0014] In one embodiment, the inner sleeve is made of plastic, and the buckle is made of plastic.

[0015] The advantages of this circular connecting lock are as follows: By setting an inner sleeve inside the lower lock body, the inner sleeve cooperates with the main body of the locking pin during insertion and removal, effectively preventing scratches on the locking pin. Furthermore, a locking buckle, spring, and button are provided on the female buckle. When the locking pin is installed with the female buckle, the spring compresses the locking buckle, causing it to lock into the locking pin's groove, thus locking the locking pin onto the female buckle. When it is necessary to remove the locking pin from the female buckle, pressing the button inward causes the locking buckle to retract from the groove, allowing the male buckle to be removed outward. The overall structure is simple, easy to assemble, effectively improves production efficiency, and is highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the circular connecting lock of this utility model after the locking pin and the female buckle are installed together.

[0017] Figure 2 for Figure 1 A schematic diagram of the circular connecting lock after the locking pin is removed from the female latch;

[0018] Figure 3 , Figure 4 This is an exploded view of the circular connecting lock of this utility model from different angles;

[0019] Figure 5 This is a cross-sectional view of the circular connecting lock of this utility model. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Please see Figures 1 to 5 This utility model provides a circular connecting lock for use on bags such as handbags, backpacks, shoulder bags, and wallets. The circular connecting lock includes a female buckle 20 and a locking pin 10 that cooperates with the female buckle 20. The locking pin 10 can be freely installed and removed from the female buckle 20.

[0027] In this embodiment, the locking pin 10 is made of steel. The locking pin 10 includes a locking pin head 11, a locking plate 12, and a main body section 13 connected in sequence. In this embodiment, the cross-sectional outline of the main body section 13 is circular. The locking pin 10 has a slot 14 on the outer peripheral surface of the main body section 13 near the middle. The slot 14 is distributed on the entire outer peripheral surface of the main body section 13. The end of the main body section 13 away from the locking plate 12 is provided with a snap-in head 15. The outer surface of the snap-in head 15 is spherical.

[0028] The female buckle 20 includes an upper locking body 21, a lower locking body 22 installed on the upper locking body 21, an inner sleeve 23 installed inside the lower locking body 22, a buckle 24 disposed inside the upper locking body 21, springs 25 and buttons 26 disposed on both sides of the buckle 24. The button 26 extends from the upper locking body 21, and the two ends of the spring 25 abut against the upper locking body 21 and the buckle 24. When the locking pin 10 is installed in conjunction with the female buckle 20, the spring 25 compresses the buckle 24, causing the buckle 24 to lock into the slot 14 of the locking pin 10, thereby locking the locking pin 10 onto the female buckle 20. When it is necessary to remove the locking pin 10 from the female buckle 20, pressing the button 26 inward causes the button 26 to push the buckle 24 to adjust horizontally, the spring 25 elastically contracts, the buckle 24 exits from the slot 14, and then the locking pin 10 is removed outward.

[0029] Specifically, the upper locking body 21 is provided with a receiving groove 211, a mating hole 212, and an adjusting hole 213. The receiving groove 211 extends inward from the middle of one end of the upper locking body 21 along the main axis of the upper locking body 21. The mating hole 212 extends inward from the middle of the other end of the upper locking body 21 along the main axis of the upper locking body 21. The receiving groove 211 and the mating hole 212 are interconnected. The inner diameter of the receiving groove 211 is larger than the inner diameter of the mating hole 212, and the inner diameter of the mating hole 212 is larger than the outer diameter of the main body section 13. The adjusting hole 213 extends inward from the outer side of the upper locking body 21 along a direction perpendicular to the main axis of the upper locking body 21, and the adjusting hole 213 is interconnected with the receiving groove 211.

[0030] The lower lock body 22 is provided with a connector 221 at one end, and the lower lock body 22 is also provided with a positioning groove 222, which extends inward from the end position of the connector 221 along the main axis of the lower lock body 22.

[0031] The latch 24 is made of plastic to effectively prevent it from scratching the pin. The latch 24 is generally tubular in shape and has a through hole 241 that extends through the latch 24 along its main axis. The latch 24 also has a fixing groove 242 and a fixing hole 243 on opposite sides. The button 26 has a limiting block 261 and a locking head 262 connected to one end of the limiting block 261. The outer diameter of the limiting block 261 is larger than the inner diameter of the adjusting hole 213.

[0032] The inner sleeve 23 is tubular in shape and has a locking hole 231 that extends through it along its main axis. The inner diameter of the locking hole 231 gradually narrows from the outside to the inside near one end, forming a guide surface 232. The outer diameter of the latch 24 is larger than the inner diameter of the inner sleeve 23. In this embodiment, the inner sleeve 23 is made of a plastic with a certain degree of elasticity. Preferably, the inner sleeve 23 is made of polyoxymethylene (POM) material, which provides good wear resistance and prevents scratching of the locking pin 10.

[0033] During assembly, the inner sleeve 23 is installed in the positioning groove 222 of the lower lock body 22, and the guide surface 232 on the inner sleeve 23 is positioned near the opening of the positioning groove 222. To ensure a more secure fit between the inner sleeve 23 and the lower lock body 22, the outer peripheral surface of the inner sleeve 23 is provided with protruding ribs, and the groove wall of the positioning groove 222 is provided with an inner groove, in which the protruding ribs are engaged.

[0034] The spring 25 and the latch 24 are disposed in the receiving groove 211 of the upper lock body 21. The button 26 passes through the adjustment hole 213 from the inside of the receiving groove 211. The two ends of the spring 25 abut against the groove wall of the receiving groove 211 and the fixing groove 242 of the latch 24, respectively. The locking head 262 of the button 26 is locked in the fixing hole 243, and the end of the button 26 away from the locking head 262 passes through the fixing hole 243. After the button 26 is released, the spring 25 presses the latch 24 and the button 26 until the limiting block 261 of the button 26 abuts against the groove wall of the receiving groove 211. The side of the latch 24 near the spring 25 extends into the mating hole 212 and is located on the moving path of the locking pin 10. Finally, the upper lock body 21 and the lower lock body 22 are installed and fixed together. During installation, the mating joint 221 of the lower lock body 22 is locked in the receiving groove 211 of the upper lock body 21.

[0035] When the locking pin 10 is installed on the female buckle 20, the locking pin 10 is inserted into the mating hole 212 until the locking pin 10's retaining plate 12 abuts against the upper lock body 21. During insertion, the retaining head 15 on the locking pin 10 extends into the through hole 241 through its spherical surface and presses the buckle 24, causing the buckle 24 to shift towards the spring 25. The locking pin 10 passes through the through hole 241. When the retaining groove 14 on the locking pin 10 aligns with the buckle 24, under the action of the spring 25, the side of the buckle 24 closest to the spring 25 extends into the retaining groove 14 to lock the locking pin 10. The main body section 13 on the locking pin 10 extends into the retaining hole 231 of the inner sleeve 23. The inner sleeve 23 and the main body section 13 on the locking pin 10 fit tightly together to prevent the locking pin 10 from shaking.

[0036] When the locking pin 10 is removed from the female latch 20, press button 26 to disengage the latch 24 from the slot 14, and then pull the locking pin 10 outward. During the insertion and removal of the locking pin 10, the inner sleeve 23 protects the main body section 13 of the locking pin 10. Furthermore, the diameter of the mating hole 212 is larger than the outer diameter of the main body section 13, which can effectively reduce the friction between the upper lock body 21 and the locking pin 10.

[0037] The advantages of this circular connecting lock are as follows: By providing an inner sleeve 23 inside the lower lock body 22, the inner sleeve 23 cooperates with the main body section 13 of the locking pin 10 during insertion and removal, effectively preventing scratches on the locking pin 10. Furthermore, a locking buckle 24, a spring 25, and a button 26 are provided on the female buckle 20. When the locking pin 10 and the female buckle 20 are installed together, the spring 25 compresses the locking buckle 24, causing the locking buckle 24 to lock into the groove 14 of the locking pin 10, thereby locking the locking pin 10 onto the female buckle 20. When it is necessary to remove the locking pin 10 from the female buckle 20, pressing the button 26 inward causes the locking buckle 24 to exit from the groove 14, and then the male buckle can be removed outward. The overall structure is simple, easy to assemble, effectively improves production efficiency, and is highly practical.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connecting lock of a round structure comprising a female buckle, a lock pin matched with the female buckle, the lock pin being freely detachable on the female buckle, characterized in that, The locking pin includes a main body section with a slot on the main body section. The female buckle includes an upper lock body, a lower lock body installed on the upper lock body, an inner sleeve installed inside the lower lock body, a buckle installed inside the upper lock body, springs and buttons on both sides of the buckle. The button extends from the upper lock body, and the two ends of the spring abut against the upper lock body and the buckle. When the locking pin and the female buckle are installed together, the spring compresses the buckle, causing the buckle to lock into the slot of the locking pin, thereby locking the locking pin onto the female buckle. The main body section of the locking pin extends into the inner sleeve, and the inner sleeve fits tightly with the main body section of the locking pin. When it is necessary to remove the locking pin from the female buckle, pressing the button inward pushes the buckle to adjust horizontally, the spring elastically contracts, the buckle exits from the slot, and the locking pin is then removed outward.

2. The circular structural connection lock of claim 1, wherein, The upper lock body is provided with a receiving groove, a mating hole and an adjusting hole. The spring and the latch are set in the receiving groove of the upper lock body. The button passes through the adjusting hole from the inside of the receiving groove. When the locking pin is installed on the female latch, the locking pin is inserted from the mating hole.

3. The circular structural connection lock of claim 2, wherein, The receiving groove extends inward from the middle of one end of the upper lock body along the main axis of the upper lock body, and the mating hole extends inward from the middle of the other end of the upper lock body along the main axis of the upper lock body. The receiving groove and the mating hole are interconnected, and the inner diameter of the mating hole is larger than the outer diameter of the main body section. The adjusting hole extends inward from the outer side of the upper lock body along a direction perpendicular to the main axis of the upper lock body, and the adjusting hole is interconnected with the receiving groove.

4. The circular structural connection lock of claim 2, wherein, The latch has a through hole that passes through the latch along its main axis. When the button is released, the spring compresses the latch and the button, and the side of the latch closest to the spring extends into the mating hole and is located on the movement path of the locking pin.

5. The circular structural connection lock of claim 4, wherein, One end of the main body section is provided with a snap-in head. The outer surface of the snap-in head is spherical. During the insertion of the locking pin, the snap-in head on the locking pin extends into the through hole through the guide of its spherical surface and squeezes the locking buckle, causing the locking buckle to move towards the spring.

6. The circular structural connection lock of claim 2, wherein, The latch is provided with a fixing groove and a fixing hole on opposite sides. The button is provided with a limiting block and a locking head connected to one end of the limiting block. The two ends of the spring abut against the groove wall of the receiving groove and the fixing groove of the latch, respectively. The locking head of the button is locked in the fixing hole, and the end of the button away from the locking head passes through the fixing hole.

7. The circular structural connection lock of claim 6, wherein, The outer diameter of the limiting block is larger than the inner diameter of the adjustment hole. After the button is released, the limiting block of the button abuts against the wall of the receiving groove.

8. The circular connection lock according to claim 2, characterized in that, The lower lock body is provided with a positioning groove, and the inner sleeve is provided with a locking hole. The locking hole penetrates the inner sleeve along the main axis direction, and the inner diameter of the locking hole gradually narrows from the outside to the inside near one end of the hole to form a guide surface. The inner sleeve is installed in the positioning groove of the lower lock body, and the guide surface on the inner sleeve is located near the opening of the positioning groove.

9. The circular connection lock according to claim 8, characterized in that, The outer peripheral surface of the inner sleeve is provided with protruding ribs, and the groove wall of the positioning groove is provided with an inner groove, and the protruding ribs are stuck in the inner groove.

10. The circular connection lock according to claim 8, characterized in that, The inner sleeve is made of plastic, and the buckle is made of plastic.

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