A readily lockable pet leash device

Abstract

This utility model discloses an easily lockable pet leash device, relating to the field of pet supplies technology. The device includes a housing, within which a leash reel is rotatably arranged, and a gear is fixedly connected to the reel, the two being integrally formed. A switch button is rotatably connected to the housing, and a mechanical button shaft for rotating the switch button is located inside the housing. A slider is fixedly connected below the switch button by fasteners, and a groove is formed within the slider, within which a pull rod slidably engages. A brake shaft is integrally formed on the switch button, and a brake lock adapted to the gear is located inside the housing. The housing also includes a switch button return spring and a lock return torsion spring. Pressing the switch button moves the slider downwards, causing the pull rod to slide along the groove to a limit groove, thus locking it. The brake shaft presses down, engaging the brake lock with the gear. Pressing the switch button again causes the pull rod to return to its original position along the return groove, thus unlocking it. This device achieves one-button locking and unlocking, with stable locking, convenient operation, and improved pet leash safety.

Description

Technical Field

[0001] This utility model relates to the field of button structure technology for pet leashes, specifically to an easy-to-lock pet leash device, mainly used for the switch control of pet leashes to achieve quick locking and unlocking of the leash. Background Technology

[0002] With the increasing demand for pet ownership, pet leashes, as essential tools for walking pets, are receiving more and more attention for their safety and ease of use. Currently, most pet leashes use simple snap-on or friction-locking mechanisms for their switches, which present the following problems: Poor locking stability: The buckle is easily loosened by vibration or pet pulling, and cannot stably lock the leash, posing a safety hazard of pet getting lost or injuring people. Cumbersome operation: Some locking mechanisms require multiple steps (such as pressing and sliding) to lock / unlock, which cannot respond quickly in emergency situations; Insufficient unlocking smoothness: After long-term use, the friction structure is prone to wear, which can lead to increased unlocking resistance and even jamming.

[0003] In view of the shortcomings of the existing technology, there is an urgent need for a button structure that is stable in locking, easy to operate, and smooth in unlocking, so as to improve the safety and user experience of pet leashes. Utility Model Content

[0004] The purpose of this utility model is to provide an easy-to-lock pet leash device, which solves the problems of unstable locking, cumbersome operation, and stuck unlocking of existing pet leash switches, and realizes the convenient operation of "one-click locking and one-click unlocking" while ensuring the reliability of the locked state.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An easily lockable pet leash device, used in pet leashes, includes a housing, a switch assembly, a locking transmission assembly, and a leash brake assembly, with the specific structure as follows: Switch assembly: includes a switch button (31), a mechanical button shaft (32), and a switch button reset spring (53); the switch button (31) is rotatably connected to the housing through the mechanical button shaft (32), and when the user presses the switch button (31), the switch button (31) can rotate around the mechanical button shaft (32); a reset spring fixing and pull rod (51) is fixed on the housing, and the reset spring fixing and pull rod (51) is provided with a spring mounting groove (i.e., a spring mounting hole), and the switch button reset spring (53) is installed in the spring mounting groove, with one end abutting against the reset spring fixing and pull rod (51) and the other end abutting against the inner side wall of the switch button (31), for automatic reset of the switch button (31).

[0006] Locking transmission assembly: includes a slider (81), a pull rod (71), and a slider groove; the slider (81) is fixed below the switch button (31) by screws, the screws being a type of fastener, which move up and down synchronously with the rotation of the switch button (31); the slider (81) has an integrated groove on the side facing the pull rod (71), the groove including, in sequence, a recess (82), a forward guide groove (83), a top limiting groove (84), a limiting groove (85), a top retraction limiting groove (86), and a retraction groove (87). The grooves are interconnected; the pull rod (71) is slidably connected in the groove, and the bottom of the reset spring fixing and pull rod (51) is provided with a pressing part, which abuts against the top of the pull rod (71) to limit the pull rod (71) from jumping out of the groove during movement; the bottom of the switch button (31) is integrally formed with a brake shaft (33), the axis of the brake shaft (33) is parallel to the axis of the mechanical button rotating shaft (32), and the brake shaft (33) moves up and down synchronously with the rotation of the switch button (31).

[0007] The rope reel braking assembly includes a brake latch (61), a latch reset torsion spring (52), a gear (41), and a rope reel (40). The brake latch (61) is rotatably connected to the outer shell via a rotating shaft. One end of the latch is adapted to the brake shaft (33) (the brake latch (61) can be pressed down when the brake shaft (33) moves down), and the other end is provided with locking teeth that are adapted to the teeth of the gear (41). The latch reset torsion spring (52) is sleeved on the rotating shaft of the brake latch (61). One end of the spring is fixed to the outer shell, and the other end abuts against the brake latch (61) for unlocking and resetting the brake latch (61). The rope reel (40) and the gear (41) are integrally formed and are rotatably connected to the outer shell. The rope reel (40) is used to wind the pet leash. When the locking teeth of the brake latch (61) engage with the gear (41), the rotation of the gear (41) and the rope reel (40) can be restricted, thereby locking the leash.

[0008] Furthermore, the extension direction of the forward guide groove (83) is set at an angle to the up-down movement direction of the slider (81), and the bottom height of the forward guide groove (83) gradually increases from the recess (82) to the top limiting groove (84), which is used to guide the pull rod (71) to move unidirectionally from the recess (82) to the top limiting groove (84).

[0009] Furthermore, the limiting groove (85) is located below the top limiting groove (84), and the bottom height of the limiting groove (85) is lower than the bottom height of the top limiting groove (84), that is, the groove depth of the limiting groove (85) is greater than the groove depth of the top limiting groove (84); when the switch button reset spring (53) drives the switch button (31) to reset, it can drive the pull rod (71) to automatically slide from the top limiting groove (84) into the limiting groove (85), thereby realizing the locking and positioning of the switch button (31).

[0010] Furthermore, the top retraction limiting groove (86) is located on one side of the limiting groove (85) and is connected to the retraction groove (87); the bottom height of the retraction groove (87) gradually decreases from the top retraction limiting groove (86) to the recess (82), which is used to guide the pull rod (71) to reset from the top retraction limiting groove (86) to the recess (82), and the groove wall of the retraction groove (87) is provided with a guide slope.

[0011] Furthermore, the top of the brake latch (61) is provided with an abutment part that cooperates with the brake shaft (33), and the bottom is provided with a locking tooth that matches the teeth of the gear (41). When the brake shaft (33) is pressed down, it can push the brake latch (61) to rotate around its rotation axis, so that the locking tooth engages with the gear (41). When the brake shaft (33) moves up, the latch reset torsion spring (52) drives the brake latch (61) to return to its original position, so that the locking tooth separates from the gear (41).

[0012] Furthermore, the diameter of the pull rod (71) is adapted to the width of the groove, with a gap range of 0.1-0.3mm, to ensure that the pull rod (71) slides smoothly in the groove without significant shaking.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Easy to operate: With the design of "one press to lock, press again to unlock", no extra sliding action is required. In an emergency, the traction rope can be quickly controlled to lock, improving the safety of use; 2. Locking stability: The pull rod (71) achieves precise positioning through the multi-segment limit of the slide groove (top limit groove 84, limit groove 85), and with the rigid transmission of the brake shaft (33) and the brake lock (61), it ensures that the rope disc (40) does not loosen after braking; 3. Reliable anti-disengagement: The return spring fixing and the pull rod holding part of the pull rod (51) continuously abuts against the pull rod (71), effectively preventing the pull rod (71) from disengaging from the groove and avoiding brake failure; 4. Precise reset: The switch button reset spring (53) and the latch reset torsion spring (52) provide stable reset force respectively, ensuring the consistency of the reset of the button and the brake latch, and the reset deviation is not easy to occur after long-term use; Attached Figure Description

[0014] Figure 1 is a schematic diagram of the cross-sectional structure of the button according to an embodiment of the present utility model; Figure 2 is a three-dimensional schematic diagram of the buttons in an embodiment of this utility model; Figure 3 is a cross-sectional schematic diagram of the traction device according to an embodiment of the present utility model; Figure 4 is a schematic diagram of the slider structure according to an embodiment of the present invention; (Explanation of reference numerals in the attached diagram: 11. Housing, 31. Switch button, 32. Mechanical button shaft, 33. Brake shaft, 40. Rope reel, 41. Gear, 51. Reset spring fixing and pressure rod, 52. Locking return torsion spring, 53. Switch button reset spring, 61. Brake lock, 71. Pull rod, 81. Slider, 82. Recessed part, 83. Forward guide groove, 84. Top limit groove, 85. Limit groove, 86. Top return limit groove, 87. Return groove) Detailed Implementation

[0015] 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.

[0016] The working principle of this utility model is as follows: 1. Locking process (1) When the user presses down the switch button (31), the switch button (31) rotates clockwise around the mechanical button pivot (32), which simultaneously drives the bottom slider (81) to move downward and the brake shaft (33) to move downward. (2) When the slider (81) moves down, the recessed part (82) of its groove drives the free end of the pull rod (71) to slide upward along the forward guide groove (83) until it enters the top limiting groove (84). (3) When the user releases the switch button (31), the switch button reset spring (53) releases its elastic force, driving the switch button (31) to reset counterclockwise around the mechanical button pivot (32), and the slider (81) moves upward synchronously. (4) During the upward movement of the slider (81), the pull rod (71) automatically slides from the top limit groove (84) into the limit groove (85) to lock the switch button (31). At this time, the switch button (31) cannot return to its original position by itself. (5) The brake shaft (33) remains pressed down when the switch button (31) is locked, pushing the brake latch (61) to rotate counterclockwise around its rotation axis, and the teeth at the bottom of the brake latch (61) engage with the teeth of the gear (41). (6) Since the gear (41) and the rope disc (40) are integrally formed, the rope disc (40) cannot rotate after the gear (41) is locked, thus locking the traction rope.

[0017] 2. Unlocking process (1) The user presses the switch button (31) down again. The switch button (31) rotates clockwise around the mechanical button shaft (32). The slider (81) moves down again. The pull rod (71) in the limit groove (85) moves into the top return limit groove (86) with the slide. (2) When the user releases the switch button (31), the switch button reset spring (53) drives the switch button (31) to reset counterclockwise, and the slider (81) moves up; (3) The pull rod (71) slides from the top retraction limit groove (86) along the retraction groove (87) and finally returns to the recess (82), and the switch button (31) returns to its initial position; (4) The brake shaft (33) moves upward with the switch button (31), releasing the pressure on the brake latch (61); the latch reset torsion spring (52) releases the torque, driving the brake latch (61) to return to its position clockwise, and the locking teeth at the bottom of the brake latch (61) separate from the gear (41); (5) The gear (41) resumes rotation, driving the rope disc (40) to rotate synchronously, and the traction rope can be freely retracted and released. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easily lockable pet leash device, characterized in that, Includes a housing (11), inside which a rope disc (40) is rotatably arranged, and a gear (41) is fixedly connected to the rope disc (40), and the rope disc (40) and the gear (41) are integrally formed; A switch button (31) is rotatably connected to the outer casing (11), and a mechanical button shaft (32) for the switch button (31) to rotate is provided inside the outer casing (11). The switch button (31) rotates around the mechanical button shaft (32). A slider (81) is fixedly connected below the switch button (31) by fasteners. A sliding groove is provided in the slider (81), and a pull rod (71) is slidably engaged in the sliding groove. The sliding groove includes a recess (82), a forward guide groove (83), a top limiting groove (84), a limiting groove (85) connected in sequence, a top retraction limiting groove (86) connected to the top limiting groove (84), and a retraction groove (87) connected to the top retraction limiting groove (86) and the recess (82). The switch button (31) has a brake shaft (33) integrally formed on it. The housing (11) is provided with a brake latch (61) adapted to the gear (41). When the brake shaft (33) rotates with the switch button (31), it can press down or move up the brake latch (61) so that the brake latch (61) engages or disengages from the gear (41). The housing (11) is also provided with a switch button reset spring (53) and a latch reset torsion spring (52). The switch button reset spring (53) is used to drive the switch button (31) to reset, and the latch reset torsion spring (52) is used to drive the brake latch (61) to reset. The housing (11) is provided with a reset spring fixing and pull rod (51). The reset spring fixing and pull rod (51) is used to install the switch button reset spring (53), and the reset spring fixing and pull rod (51) abuts against the pull rod (71) to restrict the pull rod (71) from disengaging from the slide groove.

2. The easily lockable pet leash device according to claim 1, characterized in that, The slider (81) and the switch button (31) are fixed by screw connection. The slider (81) moves up and down synchronously when the switch button (31) rotates around the mechanical button shaft (32).

3. The easily lockable pet leash device according to claim 1, characterized in that, The brake shaft (33) extends along the length of the switch button (31), and the axis of the brake shaft (33) is parallel to the axis of the mechanical button shaft (32). The end of the brake shaft (33) away from the switch button (31) is set toward the brake latch (61).

4. The easily lockable pet leash device according to claim 1, characterized in that, The forward guide groove (83) extends along the downward direction of the slider (81). One end of the forward guide groove (83) is connected to the recess (82), and the other end is connected to the top limiting groove (84). The top limiting groove (84) extends in a direction perpendicular to the forward guide groove (83). The limiting groove (85) is located on the side of the top limiting groove (84) away from the forward guide groove (83), and the depth of the limiting groove (85) is greater than the depth of the top limiting groove (84).

5. The easily lockable pet leash device according to claim 1, characterized in that, The reset spring fixing and tension rod (51) has a spring mounting hole. One end of the switch button reset spring (53) is embedded in the spring mounting hole, and the other end abuts against the inner side wall of the switch button (31).

6. The easily lockable pet leash device according to claim 1, characterized in that, The return groove (87) extends along the upward direction of the slider (81). One end of the return groove (87) is connected to the top return limiting groove (86), and the other end is connected to the recess (82). The groove wall of the return groove (87) is provided with a guide slope to guide the pull rod (71) to slide from the top return limiting groove (86) to the recess (82).

7. The easily lockable pet leash device according to claim 1, characterized in that, One end of the brake latch (61) is rotatably connected to the outer shell (11), and the other end is provided with a locking tooth that matches the teeth of the gear (41). The latch reset torsion spring (52) is sleeved on the rotating shaft of the brake latch (61), and one end of the latch reset torsion spring (52) abuts against the outer shell (11), and the other end abuts against the brake latch (61).

8. The easily lockable pet leash device according to claim 1, characterized in that, The recess (82) is the initial position of the slide groove. The bottom of the recess (82) is lower than the bottom of the forward guide groove (83) and the return groove (87), which is used to initially limit the pull rod (71).

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