A lock structure and a pet retractable leash device

Abstract

The utility model discloses a lock catch structure and pet telescopic traction rope device, including handle, be provided with the avoidance mouth on the handle, and the one end of avoidance mouth is provided with lock catch subassembly, lock catch subassembly includes the axle, torsional spring and lock catch board, the spatial dimension of lock catch board and avoidance mouth is compatible, and one end of lock catch board is free end, and one end is articulated end, the axle is rotatively connected with handle, and the axle penetrates lock catch board, the articulated end of lock catch board has the accommodation cavity, the torsional spring is covered on the axle, and is located in the accommodation cavity of lock catch board, one end of torsional spring and lock catch board abut or joint, and the other end and handle abut or joint, drive the free end of lock catch board to be close to and adhere to the other end of avoidance mouth, to close avoidance mouth and form the complete hanging catch closed structure, the utility model provides pet telescopic traction rope device has lock catch structure, can help pet owner to temporarily liberate both hands in the process of taking a dog for a walk.

Description

Technical Field

[0001] This utility model relates to the field of pet supplies technology, specifically to a locking structure and a pet telescopic leash device. Background Technology

[0002] Retractable pet leashes are a commonly used and practical tool for pet owners when walking their dogs. Through a unique rotating and retractable structure, the leash length can be flexibly adjusted, allowing for flexible control of the pet's range of movement. This ensures the pet's normal activity is not restricted while maintaining effective control over them. It allows pets to move freely within a safe area, better meeting their natural needs, while also providing pet owners with a more convenient and relaxed dog-walking experience.

[0003] Utility model patent CN206212984U discloses a retractable multi-functional dog walker, including a shell, a retractable leash inside the shell, a limiting buckle at the front end of the leash to prevent it from fully retracting into the shell, a winding device for extending and retracting the leash inside the shell, and a sound-emitting device on the shell. The shell also features a locking mechanism for positioning the leash. This retractable multi-functional dog walker, besides allowing the leash to extend and retract freely, integrates a sound-emitting device, allowing pet owners to use the sound device to issue different commands to their pets and call them from a distance.

[0004] However, the handle of this retractable multi-functional dog walker does not have a locking mechanism, so it cannot be conveniently hooked onto a backpack, belt, railing or other fixed object when it is temporarily necessary to free up the hands (such as shopping, opening doors, dealing with emergencies, etc.), which causes inconvenience to pet owners and needs further improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a locking structure and a pet telescopic leash device, which aims to improve the problem that the handle of the existing telescopic multi-functional dog walker does not have a locking structure, making it impossible to temporarily free the hands during dog walking and to achieve convenient hooking and fixing of the handle.

[0006] This utility model is implemented as follows: According to a first aspect of this utility model, a locking structure is provided, including a handle with a clearance opening. A locking assembly is provided at one end of the clearance opening. The locking assembly includes a central shaft, a torsion spring, and a locking plate. The locking plate is adapted to the spatial dimensions of the clearance opening. One end of the locking plate is a free end, and the other end is a hinged end. The central shaft is rotatably connected to the handle and passes through the locking plate. The hinged end of the locking plate has a receiving cavity. The torsion spring is sleeved on the central shaft and located in the receiving cavity of the locking plate. One end of the torsion spring abuts or engages with the locking plate, and the other end abuts or engages with the handle, driving the free end of the locking plate to approach and fit against the other end of the clearance opening to close the clearance opening and form a complete hook closure structure.

[0007] Furthermore, the free end of the latch plate is provided with a protruding limiting platform, and the other end of the clearance opening is provided with a limiting groove that is adapted to the limiting platform. When the latch plate closes the clearance opening, the limiting platform is embedded in the limiting groove.

[0008] Furthermore, one end of the hinged central shaft of the clearance opening is provided with a mounting groove, and a hinge recess is provided on the inner side wall of the mounting groove. The diameter of the hinge recess is equal to the diameter of the central shaft, and the hinge recess is a blind hole.

[0009] Furthermore, the torsion spring is provided with a first linear extension and a second linear extension at its two ends, the cavity is provided with a slot or hole structure for locking the first linear extension, and the handle is provided with a slot or hole structure for locking the second linear extension.

[0010] Furthermore, the latching plate includes a first latching plate and a second latching plate, which are snapped together.

[0011] Furthermore, the mating surfaces of the first buckle and the second buckle are respectively provided with a first snap-fit ​​protrusion and a first snap-fit ​​groove. When the first buckle and the second buckle are snapped together, the first snap-fit ​​protrusion is inserted into the first snap-fit ​​groove.

[0012] Furthermore, a first snap-fit ​​tube is provided on the inner wall of the second snap-fit ​​plate, and a first snap-fit ​​post adapted to the first snap-fit ​​tube is provided on the inner wall of the first snap-fit ​​plate. When the first snap-fit ​​plate and the second snap-fit ​​plate are snapped together, the first snap-fit ​​post is inserted into the first snap-fit ​​tube.

[0013] According to a second aspect of the present invention, the present invention provides a pet telescopic leash device having the above-described locking structure.

[0014] Furthermore, it also includes a housing, the handle is C-shaped or U-shaped, and the handle and housing are connected to form a closed-loop grip structure, the clearance opening is the opening of the closed-loop grip structure; a winding device is provided in the housing, a traction rope is wound on the winding device, and a rope opening for the traction rope to enter and exit is provided on the housing.

[0015] Furthermore, a first guide post and a second guide post are provided in the housing near the rope opening. Both the first guide post and the second guide post are cylindrical structures, and there is a guiding space between the first guide post and the second guide post for the traction rope to pass through.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. The pet retractable leash device provided by this utility model has a locking structure, which can help pet owners temporarily free their hands during dog walking and realize convenient hook and fixation of the handle to objects such as backpacks, belts, and railings, effectively improving the convenience of use.

[0017] 2. The housing of this utility model has a first guide post and a second guide post near the rope opening. Both the first and second guide posts are cylindrical structures, and there is a guide space between them for the traction rope to pass through. When the traction rope is released from or retracted from the reel, it passes through this guide space and slides along the outer walls of the first and second guide posts, effectively reducing wear on the traction rope. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the locking assembly when it is opened; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a schematic diagram of the shell structure of this utility model; Figure 5 This is a schematic diagram of the structure of the second half-shell of this utility model; Figure 6 This is a structural schematic diagram of the locking assembly of this utility model; Figure 7 This is a schematic diagram of the locking assembly of this utility model when the first buckle plate is removed; Figure 8 This is a structural schematic diagram of the first buckle plate of the locking assembly of this utility model.

[0019] In the diagram: 1. Handle; 2. Clearance opening; 201. Limiting groove; 202. Hinge recess; 203. Mounting groove; 3. Locking assembly; 301. Central shaft; 302. Torsion spring; 303. Locking plate; 304. Limiting platform; 305. First buckle plate; 306. Second buckle plate; 307. First locking protrusion; 308. First locking groove; 309. First locking post; 310. First locking tube; 4. Housing; 401. Rope opening; 402. Second locking groove; 403. Second locking tube; 5. Winding device; 501. Reel; 502. Reel; 6. Traction rope; 7. First guide post; 8. Second guide post; 9. Locking mechanism; 10. Decorative cover. Detailed Implementation

[0020] 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: like Figure 1 , Figures 3-5 As shown, a pet retractable leash device includes a housing 4, which comprises a first half-housing and a second half-housing, and the first and second half-housings are snapped together. The snap-fit ​​structure between the first and second half-housings includes mutually adaptable second snap protrusions and second slots 402 provided on the mating surfaces of the first and second half-housings, and multiple second snap-fit ​​posts provided on the inner wall of the first half-housing and second snap-fit ​​tubes 403 provided on the inner wall of the second half-housing, each corresponding to one of the second snap-fit ​​posts. When the first and second half-housings are snapped together, the second snap protrusions are inserted into the second slots 402, and each second snap-fit ​​post is inserted into its corresponding second snap-fit ​​tube 403, forming a double snap-fit ​​fixation.

[0022] like Figure 1 , Figure 3 , Figure 5As shown, a handle 1 is provided on one side of the housing 4. The handle 1 is C-shaped or U-shaped. The handle 1 and the housing 4 can be an integral structure or a separate structure. When they are separate structures, they can be connected by bolts to form a closed-loop grip structure. When they are an integral structure, they are made of plastic. The housing 4 includes a main housing part and a handle part, which is the handle 1. In this embodiment, the handle 1 and the housing 4 are an integral structure. A winding device 5 is provided in the main housing part of the housing 4. A traction rope 6 is wound on the winding device 5. The housing 4 is provided with a rope opening 401 for the traction rope 6 to enter and exit. The winding device 5 can automatically retract the traction rope 6. In addition, a locking mechanism 9 is provided on the main housing part, which can fix the length of the traction rope 6 in a timely manner. A decorative cover 10 is snapped onto the outer wall of the main housing part of the housing 4 to improve the aesthetics of this utility model.

[0023] like Figure 1 , Figure 3 , Figure 5 As shown, the winding device 5 includes a spool 501, a reel 502, and a spring. The spool 501 is rotatably connected to the main housing. Both the spring and the reel 502 are sleeved on the spool 501. One end of the spring is connected to the reel 502, and the other end is connected to the spool 501. One end of the traction rope 6 is fixedly wound around the outer peripheral wall of the reel 502, and the other end extends through the rope opening 401 to the outside of the housing 4. A first guide post 7 and a second guide post 8 are provided in the housing 4 near the rope opening 401. Both the first guide post 7 and the second guide post 8 are cylindrical structures, and there is a guide space between the first guide post 7 and the second guide post 8 for the traction rope 6 to pass through. When the traction rope 6 is released from or retracted from the reel 502, it must pass through this guide space and slide along the outer walls of the first guide post 7 and the second guide post 8, thus reducing wear on the traction rope 6. The second guide post 8 can be a cylinder with the same structure as the first guide post 7, or it can be a second retaining tube 403, which is positioned close to the first guide post 7.

[0024] like Figure 1 , Figure 4 , Figures 6-8As shown, the handle 1 has a clearance opening 2, and a locking assembly 3 is provided at the clearance opening 2. The locking assembly 3 includes a central shaft 301, a torsion spring 302, and a locking plate 303. The locking plate 303 is adapted to the spatial dimensions of the clearance opening 2. One end of the locking plate 303 is a free end, and the other end is a hinged end. The locking plate 303 includes a first latching plate 305 and a second latching plate 306, which are snapped together. The mating surfaces of the first latching plate 305 and the second latching plate 306 are respectively provided with a first latching protrusion 307 and a first latching groove 308. In addition, a first snap-fit ​​tube 310 is provided on the inner wall of the second snap-fit ​​plate 306, and a first snap-fit ​​post 309 adapted to the first snap-fit ​​tube 310 is provided on the inner wall of the first snap-fit ​​plate 305. When the first snap-fit ​​plate 305 and the second snap-fit ​​plate 306 are snapped together, the first snap-fit ​​protrusion 307 is inserted into the first snap-fit ​​groove 308, and the first snap-fit ​​post 309 is inserted into the first snap-fit ​​tube 310.

[0025] like Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, the central shaft 301 is rotatably connected to the handle 1. A mounting groove 203 is provided at one end of the central shaft 301, hinged to the clearance opening 2. A hinge recess 202 is provided on the inner wall of the mounting groove 203. The diameter of the hinge recess 202 is equal to the diameter of the central shaft 301, and the hinge recess 202 is a blind hole. The central shaft 301 passes through the locking plate 303, with both ends inserted into the two hinge recesses 202 respectively. The hinge end of the locking plate 303 has a receiving cavity. A torsion spring 302 is sleeved on the central shaft 301 and located within the receiving cavity of the locking plate 303. The two ends of the torsion spring 302 are respectively provided with a first linear extension and a second linear extension. The interior of the receiving cavity is provided with a slot or hole structure for locking the first linear extension, and the handle 1 is provided with a slot or hole structure for locking the second linear extension. The torsion spring 302 drives the free end of the latch plate 303 to approach and fit against the other end of the clearance opening 2, thereby closing the clearance opening 2 and forming a complete latch closure structure. The free end of the latch plate 303 is provided with a protruding limiting platform 304, and the other end of the clearance opening 2 is correspondingly provided with a limiting groove 201 that matches the limiting platform 304. When the latch plate 303 closes the clearance opening 2, the limiting platform 304 is embedded in the limiting groove 201. When it is necessary to open the latch assembly 3, pressing the free end of the latch plate 303 inward overcomes the elastic force of the torsion spring 302, thus opening the latch assembly 3. Figure 2 As shown. After being released, the elastic force of the torsion spring 302 can drive the latch plate 303 to automatically reset and re-close the clearance opening 2.

[0026] In summary, the pet retractable leash device provided by this utility model has a locking structure, which can help pet owners temporarily free their hands during dog walking and realize convenient hook-and-lock fixation of the handle to objects such as backpacks, belts, and railings, effectively improving the convenience of use.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking structure, comprising a handle, characterized in that, The handle is provided with a clearance opening, and a locking assembly is provided at one end of the clearance opening. The locking assembly includes a central shaft, a torsion spring, and a locking plate. The locking plate is adapted to the spatial dimensions of the clearance opening. One end of the locking plate is a free end, and the other end is a hinged end. The central shaft is rotatably connected to the handle and passes through the locking plate. The hinged end of the locking plate has a receiving cavity. The torsion spring is sleeved on the central shaft and located in the receiving cavity of the locking plate. One end of the torsion spring abuts or engages with the locking plate, and the other end abuts or engages with the handle, driving the free end of the locking plate to approach and fit against the other end of the clearance opening to close the clearance opening and form a complete hook closure structure.

2. The locking structure according to claim 1, characterized in that, The free end of the latch plate is provided with a protruding limiting platform, and the other end of the clearance opening is provided with a limiting groove that is adapted to the limiting platform. When the latch plate closes the clearance opening, the limiting platform is embedded in the limiting groove.

3. The locking structure according to claim 1, characterized in that, The clearance opening has a mounting groove at one end of the hinged central shaft. The inner sidewall of the mounting groove has a hinge recess, the diameter of which is equal to the diameter of the central shaft. The hinge recess is a blind hole.

4. The locking structure according to claim 1, characterized in that, The torsion spring has a first linear extension and a second linear extension at its two ends, the cavity has a slot or hole for locking the first linear extension, and the handle has a slot or hole for locking the second linear extension.

5. A locking structure according to claim 1, characterized in that, The latching plate includes a first latching plate and a second latching plate, which are snapped together.

6. A locking structure according to claim 5, characterized in that, The mating surfaces of the first and second buckles are respectively provided with a first snap-fit ​​protrusion and a first snap-fit ​​groove. When the first and second buckles are snapped together, the first snap-fit ​​protrusion is inserted into the first snap-fit ​​groove.

7. A locking structure according to claim 6, characterized in that, The inner wall of the second buckle plate is provided with a first snap-fit ​​tube, and the inner wall of the first buckle plate is provided with a first snap-fit ​​post that is adapted to the first snap-fit ​​tube. When the first buckle plate and the second buckle plate are snapped together, the first snap-fit ​​post is inserted into the first snap-fit ​​tube.

8. A retractable pet leash device, characterized in that, It has the locking structure as described in any one of claims 1-7.

9. A pet retractable leash device according to claim 8, characterized in that, It also includes a housing, the handle is C-shaped or U-shaped, and the handle and housing are connected to form a closed-loop grip structure, the clearance opening is the opening of the closed-loop grip structure; the housing is provided with a winding device, the winding device is wound with a traction rope, and the housing is provided with a rope opening for the traction rope to enter and exit.

10. A pet retractable leash device according to claim 9, characterized in that, The housing has a first guide post and a second guide post located near the rope opening. Both the first guide post and the second guide post are cylindrical structures, and there is a guide space between the first guide post and the second guide post for the traction rope to pass through.

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