Pet sliding traction device

Abstract

The invention discloses a pet sliding traction device. The pet sliding traction device comprises a shell, a first winding module, a second winding module, a first driving mechanism and a second driving mechanism, wherein a wire outlet is formed in one side of the shell; the first winding module comprises a first wire spool and a first rope; the second winding module comprises a second wire spool and a second rope; the first driving mechanism is used for driving the first wire spool to rotate forwards and backwards; the second driving mechanism is used for driving the second wire spool to rotate forwards and backwards; the first driving mechanism drives the first wire spool to rotate and / or the second driving mechanism drives the second wire spool to rotate, so that the first rope and the second rope can synchronously stretch out or retract from the wire outlet. The working form of the pet-sliding traction device is more flexible and diversified, the traction force and the traction direction similar to human traction can be better provided, and the traction effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of traction devices, and in particular to a pet traction device. Background Art

[0002] A pet traction device typically includes a leash, which is used to guide a pet for outdoor walks. Traditional traction devices are typically made of simple flexible ropes, allowing dogs to move freely within a certain range while maintaining constant control. However, existing pet leashes or retractors lack intelligent retraction and force control capabilities. If directly applied to a robot, the pet could easily pull on the robot at various speeds, potentially damaging it. Alternatively, the robot could forcefully pull on the leash, potentially causing the pet to be strangled or even killed. Summary of the Invention

[0003] In order to solve the above technical problems, the main purpose of the present invention is to provide a pet walking traction device, which aims to solve the problem that traditional pet walking traction ropes or traction devices do not have the ability of intelligent retraction and force control, which can easily cause pet injuries.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a pet traction device, comprising:

[0005] A housing, wherein a wire outlet is provided on one side of the housing;

[0006] a first winding module disposed in the housing and comprising a first winding drum and a first rope, wherein the first rope has an unwinding end wound out from the first winding drum;

[0007] a second winding module disposed in the housing and comprising a second winding drum and a second rope, wherein the second rope has an outlet end wound from the first winding drum, and the outlet end of the second rope is connected to the outlet end of the first rope;

[0008] a first driving mechanism connected to the first winding drum, for driving the first winding drum to rotate forward and reverse;

[0009] a second driving mechanism connected to the second winding drum, for driving the second winding drum to rotate in a forward and reverse direction;

[0010] The first driving mechanism drives the first winding drum to rotate and / or the second driving mechanism drives the second winding drum to rotate, so that the first rope and the second rope can be synchronously extended or retracted from the wire outlet.

[0011] Optionally, at least one of the first winding module and the second winding module is provided with an elastic member, and the elastic member can provide an elastic winding force;

[0012] Among them, when the tension applied to the unwinding end of the second rope and the unwinding end of the first rope is greater than the winding force of the elastic member, the first winding drum and the second winding drum can be driven to rotate in the unwinding direction under the action of the first rope and the second rope; when the tension applied to the unwinding end of the second rope and the unwinding end of the first rope is less than the winding force of the elastic member, the first winding drum and the second winding drum can be driven to rotate in the winding direction under the action of the winding force of the elastic member.

[0013] Optionally, the elastic member is configured as a coil spring, which is provided on the second winding drum. When the second winding drum rotates in the unwinding direction, the coil spring is in a tightened and energy-storing state to form a winding force; when the external force acting on the second rope is removed or is less than the winding force of the coil spring, the coil spring releases energy to drive the second winding drum to rotate in the winding direction.

[0014] Optionally, the stiffness of the second rope is greater than the stiffness of the first rope.

[0015] Optionally, the shell includes a first shell, a second shell, and a transition bracket located between the first shell and the second shell, a first cavity is formed between the transition bracket and the first shell, and a second cavity is formed between the transition bracket and the second shell;

[0016] The transition bracket is provided with a first mounting hole and a second mounting hole. At least part of the rotation of the first winding drum is arranged in the first mounting hole, and the first rope is located in the first cavity. At least part of the rotation of the second winding drum is arranged in the second mounting hole, and the second rope is also located in the first cavity. The first drive mechanism and the second drive mechanism are both located in the second cavity.

[0017] Optionally, the first rope further has a fixed end opposite to its winding end; and the first winding drum comprises:

[0018] A first winding chassis is rotatably mounted in the first mounting hole and has a winding groove protruding from one side of the first winding chassis along its axial direction. The winding groove protrudes from the first mounting hole and has a notch on one side. The fixed end of the first rope is sleeved in the winding groove, and the first rope can be wound out of the notch to be wound around the outer circumference of the winding groove.

[0019] The first cover plate is connected to the transition bracket and covers the notch of the winding groove, so that the first winding chassis can rotate relative to the first cover plate.

[0020] Optionally, the second rope has a fixed end opposite to its winding end; and the second winding drum comprises:

[0021] a second winding chassis rotatably mounted in the second mounting hole and having a winding ring protruding from the second mounting hole, wherein the outer periphery of the winding ring is provided with a groove extending along the circumference thereof, and the winding end of the second rope is connected to the groove;

[0022] a second cover plate, which covers the end portion of the inner ring side of the winding ring and enables the second winding chassis to rotate relative to the second cover plate;

[0023] A pressure plate connected to the transition bracket and forming a rotation-stopping fit with the second cover plate;

[0024] The coil spring has a central end and a free end, wherein the central end is arranged on the second winding chassis, and the free end is connected to the second cover plate.

[0025] Optionally, the pet-slipping traction device also includes a wire group guiding structure, which includes a first guide wheel rotatably arranged in the shell, and the first guide wheel is suitable for forming a wire clamping area between the first guide wheel and the second winding drum, and the wire clamping area is suitable for allowing the first rope and the second rope to pass through and be guided toward the wire outlet under the guiding action of the first guide wheel, and the wire clamping area is suitable for clamping the two sides of the winding end of the first rope respectively and forming a friction force with the first rope, and under the action of the first guide wheel, the second rope is attached to the outside of the first rope after passing through the wire clamping area.

[0026] Optionally, the first driving structure includes a first driver and a first driving disk connected to the first driver, the first driving disk is provided with a positioning portion, and the first winding disk is provided with a mating portion that cooperates with the positioning portion. The first driver is used to drive the first driving disk to rotate and drive the first winding disk to rotate together with the cooperation of the positioning portion and the mating portion.

[0027] Optionally, the second drive structure includes a second driver and a deceleration device connected to the second driver, the deceleration device has an output part, and the output part is locked in rotation with the second winding drum. The second driver drives the deceleration device to rotate, thereby driving the second winding drum to rotate together.

[0028] The technical solution provided by the present invention has the following beneficial effects:

[0029] The pet traction device provided by the present invention includes a housing, a first winding module, a second winding module, a first drive mechanism and a second drive mechanism. The first winding drum of the first winding module is used for winding the first rope thereon, and the first driving mechanism drives the first winding drum to rotate to realize the unwinding and rewinding of the first rope. The second winding drum of the second winding module is used for winding the second rope thereon, and the second driving mechanism drives the second winding drum to rotate to realize the unwinding and rewinding of the second rope. The first rope and the second rope can be automatically unwound and reeled, which is more intelligent for the traction control effect of the pet, does not require the user to make real-time adjustments for a long time, is simpler and more convenient to operate, and provides a better user experience. Moreover, the winding end of the first rope and the winding end of the second rope are connected, and the first rope and the second rope are connected to the pet at the same time, so the traction rope has better strength and is not easy to break. Furthermore, when using the pet-strolling traction device, the first and second ropes can be unwound by pulling on them. When the pet is not exerting any force and is relatively close to the pet-strolling traction device, one of the first and second ropes can be reeled in by activating either the first or second drive mechanism. Since the first and second ropes are connected, the other rope can be reeled in, and the two drive mechanisms can operate alternately, saving energy. When the pet exerts a greater force, the pet-strolling traction device can simultaneously activate the first and second drive mechanisms to reel in the ropes to mitigate the impact, thus preventing injury to the user or the pet-strolling robot. The pet-strolling traction device offers greater flexibility and variety in its operation, providing a traction force and direction similar to that of human traction, resulting in a better traction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] Figure 1 A schematic structural diagram of an embodiment of a pet-sliding and traction device provided by the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of an exploded structure of the pet sliding and traction device;

[0033] Figure 3 for Figure 1 A schematic diagram of the structure of the pet sliding traction device (excluding part of the housing);

[0034] Figure 4for Figure 3 A schematic structural diagram of the pet sliding and traction device from another perspective;

[0035] Figure 5 for Figure 4 A schematic diagram of an exploded structure of the pet sliding and traction device;

[0036] Figure 6 for Figure 1 A schematic diagram of the structure of the pet traction device (excluding part of the housing and rope);

[0037] Figure 7 for Figure 6 A schematic cross-sectional view of the pet sliding and traction device;

[0038] Figure 8 for Figure 1 A schematic structural diagram of the first winding module and the second winding module;

[0039] Figure 9 for Figure 1 A schematic structural diagram of the first rope, the second rope and the telescopic rope loop;

[0040] Figure 10 1 is a schematic structural diagram of the first rope and the second rope.

[0041] Description of Figure Numbers:

[0042] 100-pet traction device; 1-housing; 11-first housing; 12-second housing; 13-transition bracket; 131-first mounting hole; 132-second mounting hole; 133-wire outlet; 134-guide groove; 2-first winding module; 21-first winding drum; 211-first winding chassis; 2111-winding groove; 212-first cover; 22-first rope; 3-second winding module; 31-second winding drum; 311-second winding chassis; 3111-first clamping part; 3112-second clamping part; 312-second cover; 3121-limit Positioning protrusion; 313-pressure plate; 3131-limiting recess; 32-second rope; 321-clamping ring; 33-first bearing; 34-second bearing; 35-clamping column; 36-elastic member; 4-telescopic rope loop; 5-first driving mechanism; 51-first driver; 52-first driving disk; 53-positioning part; 531-first connecting hole; 532-first positioning hole; 6-second driving mechanism; 62-speed reduction device; 621-output part; 6211-transmission groove; 7-wire group guide structure; 71-first guide wheel; 72-second guide wheel; 73-third guide wheel.

[0043] The realization of the purpose, functional characteristics and excellent effects of the present invention will be further explained below with reference to specific embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if a directional indication is involved in an embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] The present invention provides a pet traction device 100, which can be held by a user or placed on a pet robot to achieve traction of the pet. Figure 1 and Figure 2In this embodiment, the pet-slipping traction device 100 includes a housing 1, a first winding module 2, a second winding module 3, a first driving mechanism 5 and a second driving mechanism 6. A wire outlet 133 is provided on one side of the housing 1. The first winding module 2 is arranged in the housing 1, and includes a first winding drum 21 and a first rope 22. The first rope 22 has a winding end wound out from the first winding drum 21. The second winding module 3 is arranged in the housing 1, and includes a second winding drum 31 and a second rope 32. The second rope 32 has a winding end wound out from the first winding drum 21, and the winding end of the second rope 32 is connected to the winding end of the first rope 22. The first driving mechanism 5 is connected to the first winding drum 21, and is used to drive the first winding drum 21 to rotate forward and reverse. The second driving mechanism 6 is connected to the second winding drum 31, and is used to drive the second winding drum 31 to rotate forward and reverse. The first driving mechanism 5 drives the first winding drum 21 to rotate and / or the second driving mechanism 6 drives the second winding drum 31 to rotate, so that the first rope 22 and the second rope 32 can be synchronously extended or retracted from the outlet 133.

[0048] In this embodiment, the first winding drum 21 of the first winding module 2 is used to wind a first rope 22 thereon. The first driving mechanism 5 drives the first winding drum 21 to rotate, thereby unwinding and rewinding the first rope 22. The second winding drum 31 of the second winding module 3 is used to wind a second rope 32 thereon. The second driving mechanism 6 drives the second winding drum 31 to rotate, thereby unwinding and rewinding the second rope 32. The first and second ropes 22 and 32 can be automatically unwound and retracted, providing more intelligent traction control for pets, eliminating the need for long-term real-time adjustments by the user, making operation simpler and more convenient, and providing a better user experience.

[0049] Moreover, the unwinding end of the first rope 22 and the unwinding end of the second rope 32 are connected, and the first rope 22 and the second rope 32 are simultaneously connected to the pet, which increases the strength of the traction rope and makes it less likely to break. Moreover, when the pet traction device 100 is in use, the first rope 22 and the second rope 32 can be unwound by pulling the first rope 22 and the second rope 32. When the pet does not apply any force and the pet is relatively close to the pet traction device 100, one of the first rope 22 or the second rope 32 can be reeled in by activating one of the first drive mechanism 5 or the second drive mechanism 6. Since the first rope 22 and the second rope 32 are connected, the other rope can be reeled in. The two drive mechanisms can work alternately, which saves more energy.

[0050] When the pet exerts a large force, the pet traction device 100 can simultaneously activate the first drive mechanism 5 and the second drive mechanism 6 to reel in the rope to better prevent damage to the user or the pet robot. The pet traction device 100 has more flexible and diverse working modes, can better provide traction force and traction direction similar to human traction, and has a better traction effect.

[0051] The size and shape of the housing 1 can be set according to the pulling length. When the unwinding length is required to be large, the corresponding winding amount is also large, so the space occupied is also large; when the unwinding length is required to be small, the corresponding winding amount is also small, so the space occupied is also small. Preferably, combined with Figure 1 and Figure 2 As shown, the housing 1 is box-shaped and includes a first housing 11, a second housing 12, and a transition bracket 13 located between the first and second housings 11, 12. A first cavity is formed between the transition bracket 13 and the first housing 11, and a second cavity is formed between the transition bracket 13 and the second housing 12. When the pet traction device 100 is in normal use, the first housing 11 is located above the transition bracket 13, and the second housing 12 is located below the transition bracket 13, so that the first cavity is located above the second cavity. The description of the orientation in the present invention shall be referred to as such unless otherwise specified.

[0052] like Figure 2 As shown in FIG, the transition bracket 13 is arranged in a groove shape with the notch facing upward. The first shell 11 covers the notch of the transition bracket 13, and the second shell 12 is connected to the bottom of the transition bracket 13. A first mounting hole 131 and a second mounting hole 132 are provided at the bottom of the groove of the transition bracket 13. At least part of the rotation of the first winding drum 21 is arranged in the first mounting hole 131, so that the first rope 22 is located in the first cavity. At least part of the rotation of the second winding drum 31 is arranged in the second mounting hole 132, so that the second rope 32 is also located in the first cavity. The first drive mechanism 5 and the second drive mechanism 6 are both located in the second cavity. Placing the drive mechanism and the rope in different cavities can better prevent the drive mechanism from affecting the rope. Moreover, when maintaining the winding module, the first shell 11 can be opened, and when maintaining the drive mechanism, the second shell 12 can be opened. The separate layout makes maintenance operations more intuitive and convenient.

[0053] Moreover, heat dissipation holes are provided on the second shell 12, and the heat dissipation holes can be set corresponding to the first driving mechanism 5 and / or the second driving mechanism 6, so as to achieve better heat dissipation effect and avoid overheating of the entire pet sliding traction device 100.

[0054] The outlet 133 is formed on the peripheral side wall of the filter bracket and is retracted into the first shell 11. A lock can be provided at the end of the winding end of the first rope 22, which can be connected to the pet's collar or clothing cover through the lock, thereby facilitating connection with the pet. When the pet traction device 100 is not in use, the first rope 22 and the second rope 32 can be reeled in until the lock is locked on the outside of the outlet 133 and retracted into the first shell 11, making it convenient to pull out the ropes to connect with the pet and also conveniently store the pet traction device 100. The lock includes a lock buckle protruding from the winding end of the first rope 22. The lock buckle is U-shaped and fixedly connected to the first rope 22. The lock buckle is connected to a locking component such as the pet's collar or clothing cover through the lock buckle. Preferably, the lock buckle is made of metal, which has better strength and is convenient for forming a certain movement space with the locking component on the pet, making it more convenient for the pet to move freely.

[0055] When the first and second ropes 22 and 32 are subjected to a pulling force (e.g., a pulling force from a pet) at their winding ends, the first and second ropes 22 and 32 are automatically unwound from their corresponding winding reels under the action of the pulling force. Furthermore, an elastic member 36 is provided on at least one of the first winding module 2 and the second winding module 3. When the pulling force applied to the winding ends of the second and first ropes 32 is greater than the reeling force of the elastic member 36, the first and second ropes 22 and 32 drive the first and second winding reels 21 and 31 to rotate in the unwinding direction. In other words, under the pulling force from the pet or the owner, the first and second ropes 22 and 32 are automatically unwound from their corresponding winding reels. Simultaneously, during the unwinding process, the elastic member 36 gradually accumulates energy, providing a certain counteracting force to the first and second ropes 22 and 32, thereby maintaining the tensioned ropes and preventing them from being scattered and tangled.

[0056] Furthermore, when the tension applied to the unwinding ends of the second and first cords 32 and 22 is less than the reeling force of the elastic member 36, the reeling force of the elastic member 36 automatically drives the first and second cord reels 21 and 31 to rotate in the reeling direction. Specifically, when the pet is relatively close to the pet-strolling traction device 100, the elastic member 36 automatically drives the first and second cord reels 21 and 31 to rotate in the reeling direction, allowing the first and second cords 22 and 32 to be automatically wound around the corresponding reels, thereby preventing the extended cords from being too long and causing entanglement. Furthermore, during use, the pet-strolling traction device 100 automatically unwinds when external forces are applied to the first and second cords 22 and 32, and automatically rewinds when no external forces are applied or when the external forces are minimal, thereby achieving automatic reeling and unreeling of the cords. This eliminates the need for the user to constantly adjust the reeling mechanism, resulting in greater ease of use and greater ease of use. Furthermore, the device also eliminates the need to repeatedly activate the first and second drive mechanisms 5 and 6, saving energy and better protecting the first and second drive mechanisms 5 and 6. Moreover, even if the pet suddenly runs away, the rope can be automatically reeled out without causing a large impact on the user, which can better protect the user or the pet-walking robot.

[0057] It can be understood that in one embodiment, elastic members 36 may be provided on both the first winding reel 21 and the second winding reel 31. The two elastic members 36 can better realize the winding of the first winding reel 21 and the second winding reel 31, so that the first rope 22 and the second rope 32 can both be automatically wound, and the winding effect is better.

[0058] The second rope 32 has a greater stiffness than the first rope 22. The second rope 32 supports the first rope 22, allowing the first rope 22 to unfold in a relatively taut position after winding, supported by the rigidity of the second rope 32, rather than being too soft and loose. Therefore, an elastic member 36 is preferably provided on the second winding drum 31. By rewinding the second winding drum 31, the first rope 22 is simultaneously rewound and moved onto the first winding drum 21. Furthermore, the single elastic member 36 simplifies the structure of the entire pet-slipping and traction device 100, reducing costs.

[0059] Preferably, combined Figure 5 and Figure 8As shown, the elastic member 36 is configured as a coil spring, preferably a spiral coil spring. The coil spring is mounted on the second winding drum 31. When the second winding drum 31 rotates in the unwinding direction, the coil spring is tightened and stored to generate a rewinding force. This provides a certain reaction force to the second rope 32, keeping the reeled rope taut. When the external force acting on the second rope 32 is removed or less than the rewinding force of the coil spring, the coil spring releases energy to drive the second winding drum 31 to rotate in the rewinding direction, achieving automatic rewinding of the rope and preventing the unwound rope from being too long and causing entanglement.

[0060] The first winding drum 21 is primarily used for winding the first rope 22. Specifically, a first mounting hole 131 is provided on the transition bracket 13. The first rope 22 has a fixed end opposite its unwinding end. The fixed end of the first rope 22 is used to be fixed to the first winding drum 21, which facilitates winding the first rope 22 onto the first winding drum 21. Moreover, when the first rope 22 is completely unwound, the fixed end of the first rope 22 is fixed to the first winding drum 21, thereby preventing the first rope 22 from completely falling out of the pet traction device 100.

[0061] Preferably, combined Figure 3 and Figure 5 As shown, the first winding drum 21 includes a first winding base 211 and a first cover plate 212. The first winding base 211 is roughly disc-shaped and is rotatably mounted in the first mounting hole 131. A winding groove 2111 is protruded along one side of the first winding base 2111. The winding groove 2111 protrudes from the first mounting hole 131 and has a notch on one side. The fixed end of the first rope 22 is sleeved in the winding groove 2111, and the fixed end of the first rope 22 is limited by the winding groove 2111. The first rope 22 can be wound out of the notch and wound around the outer circumference of the winding groove 2111. The first cover plate 212 is connected to the transition bracket 13 and covers the notch of the winding groove 2111, so that the first winding base 211 can rotate relative to the first cover plate 212. The first cover plate 212 can block the notch end of the winding groove 2111. On the one hand, it can prevent the fixed end of the first rope 22 from escaping from the winding groove 2111. On the other hand, it can limit the multi-layer first ropes 22 wound on the outer peripheral side of the winding groove 2111, thereby preventing the first rope 22 from escaping from one end of the winding groove 2111, thereby ensuring a better winding effect of the first rope 22.

[0062] The first cover plate 212 is generally flat and is connected to the transition bracket 13 via a plurality of screws or bolts. A positioning protrusion is provided on the side of the first cover plate 212 facing the first winding drum 21. The positioning protrusion presses against the fixed end of the first rope 22, securing the fixed end of the first rope 22 while allowing the first winding drum 21 to rotate relative to the first cover plate 212 for winding or unwinding.

[0063] The second winding drum 31 is primarily used to wind the second rope 32. Specifically, a second mounting hole 132 is provided on the transition bracket 13. The second rope 32 has a fixed end opposite its unwinding end. The fixed end of the second rope 32 is fixedly connected to the second winding drum 31 to facilitate unwinding and rewinding of the second rope 32 and prevent the second rope 32 from completely falling off the second winding drum 31.

[0064] Preferably, combined Figure 3 and Figure 5 As shown, the second winding drum 31 includes a second winding chassis 311, a second cover plate 312 and a pressure plate 313. The second winding chassis 311 is rotatably arranged in the second mounting hole 132 and has a winding ring protruding from the second mounting hole 132. It should be noted that when the pet-slipping traction device 100 is set to work normally, the first mounting hole 131 and the second mounting hole 132 are both arranged on a horizontally arranged plane of the transition bracket 13, and preferably, the winding area of ​​the first winding drum 21 and the winding area of ​​the second winding drum 31 at least partially overlap in their orthographic projections in the horizontal direction, so that when the first rope 22 and the second rope 32 are wound out, the two can fit together better.

[0065] A groove is provided on the outer periphery of the winding ring and extends along its circumference. The area within the groove forms the winding area of ​​the second winding disc 31. The second cover plate 312 is provided on the end portion of the inner ring side of the winding ring, and allows the second winding base disc 311 to rotate relative to the second cover plate 312. The pressure plate 313 is connected to the transition bracket 13 and forms a rotation-stopping fit with the second cover plate 312. The center end of the coil spring is fixed to the inner ring side of the winding ring, and the free end of the coil spring is fixedly connected to the second cover plate 312. When the second rope 32 is wound outward, the free end of the coil spring contracts in the direction of gradual tightening, and causes the coil spring to form a winding stress to ensure that the traction rope remains in a tensioned state. When the second rope 32 is no longer pulled by the pet or the pulling force on the second rope 32 is less than the winding stress of the coil spring, the winding stress of the coil spring can drive the second winding chassis 311 to rotate in the opposite direction, so that the second rope 32 is wound in the groove of the second winding chassis 311, realizing automatic winding.

[0066] It is understood that the second cover plate 312 and the pressing plate 313 can be integrated to reduce the number of assembled parts. Alternatively, the second cover plate 312 and the pressing plate 313 can be connected by screws or bolts to ensure that the second cover plate 312 and the pressing plate 313 do not rotate relative to each other.

[0067] However, since the free end of the coil spring needs to be fixed on the second cover plate 312, if the second cover plate 312 and the pressure plate 313 are completely fixed, the connection between the pressure plate 313 and the transition bracket 13 will be affected, making it impossible to accurately align the pressure plate 313 and the transition bracket 13, resulting in assembly difficulties. Figure 5 and Figure 7 As shown, one of the second cover plate 312 and the pressure plate 313 is provided with a limiting protrusion 3121, and the other is provided with a limiting recess 3131 that cooperates with the limiting protrusion 3121. The cross-sections of the limiting protrusion 3121 and the limiting recess 3131 are both non-circular. During assembly, the second cover plate 312 can be first placed on the second winding chassis 311, so that the free end of the coil spring can be plugged and fixed to the second cover plate 312. Then, the pressure plate 313 is placed on the second cover plate 312, so that the limiting protrusion 3121 and the limiting recess 3131 are relatively aligned. The pressure plate 313 and the second cover plate 312 can be flexibly disassembled and assembled, making assembly more convenient. In addition, the second cover plate 312 is stably and reliably limited, preventing the second cover plate 312 from rotating relative to the transition bracket 13.

[0068] Furthermore, a first clamping portion 3111 and a second clamping portion 3112 are provided on the inner side of the winding ring, facing each other. These first and second clamping portions 3111, 3112 are spaced apart from each other along the radial direction of the winding ring. These first and second clamping portions 3111, 3112 clamp and secure the coil spring to either side of its central end, thereby securing the coil spring. Furthermore, a second cover plate 312 can be crimped onto the ends of the first and second clamping portions 3111, 3112, preventing the coil spring's central end from dislodging and ensuring the coil spring's stability during operation.

[0069] Among them, because the winding stress of the coil spring is relatively small, if the rotational friction between the second winding chassis 311 and the second mounting hole 132 is too great, it will cause winding failure. In this embodiment, the second winding module 3 also includes a first bearing 33 and a second bearing 34, and the second winding chassis 311 has a rotating portion located in the second mounting hole 132. The first bearing 33 is rotationally connected to the rotating portion and the second mounting hole 132, and the second bearing 34 is rotationally connected to the winding ring and the second cover plate 312. This makes the second winding chassis 311 smoother when rotating, and the force driving its rotation can be smaller, so that the second rope 32 can be better automatically wound under the action of the winding stress of the coil spring.

[0070] The first rope 22 is made of a flexible material, such as nylon or cotton. The second rope 32 is made of a metal material, such as sheet metal or wire. Furthermore, the width of the first rope 22 is greater than the width of the second rope 32, so that the second rope 32 provides a certain degree of rigid support to the first rope 22, but not excessive rigidity. This ensures that the traction rope does not become tangled while maintaining flexibility, allowing the pet greater freedom of movement.

[0071] Moreover, combined Figure 9 and Figure 10 As shown, both the first cord 22 and the second cord 32 are long strips, with their reel-out ends and fixed ends corresponding to the lengthwise ends of the first cord 22 and the second cord 32, respectively. The reel-out end is the end closest to the pet, while the fixed end is the end secured to the first or second reel 21, 31. The first cord 22 is flat, with the reel-out end of the second cord 32 bonded or welded to the first cord 22. Preferably, the second cord 32 is located in the middle of the first cord 22 along its width to provide stable support for the first cord 22.

[0072] A locking post is provided at the fixed end of the first rope 22, which is adapted to be sleeved within the winding groove 2111 of the first winding chassis 211. The locking post is generally cylindrical, and its axial length is consistent with the width of the first rope 22, so that the fixed end of the first rope 22 is fixed to the locking post.

[0073] A mounting portion is provided at the fixed end of the second rope 32. The mounting portion is adapted to cooperate with a mating portion on the second winding drum 31 to secure the fixed end of the second rope 32 to the winding circumference of the second winding drum 31. The mating portion includes a clamping post 35 extending axially along the second winding drum 31. The clamping post 35 is clamped onto the two sidewalls of the groove on the outer circumference of the winding ring. The two ends of the clamping post 35 are respectively inserted into the two opposite sidewalls of the groove in the vertical direction. The mounting portion includes a clasp 321 provided at the fixed end of the second rope 32. The clasp 321 is sleeved on the outside of the clamping post 35, allowing the second rope 32 to be wound within the groove. This simple structure ensures that the second rope 32 is not easily dislodged from the second winding base 311.

[0074] In addition, combined Figure 3 and Figure 9As shown, the system also includes a retractable loop 4, which is positioned over the exit end of the first rope 22 and encloses the exit end of the second rope 32. One end of the retractable loop 4 is adapted to be secured to the outlet 133, while the other end is connected and secured to the exit end of the first rope 22, allowing the locking head of the first rope 22 to be exposed through the retractable loop 4. The retractable loop 4 protects the first and second ropes 22, 32, enhancing the strength of the traction rope and also enhancing its appearance. The first rope 22, second rope 32, and retractable loop 4 together constitute the traction rope.

[0075] One end of the telescopic loop 4 is provided with a latching protrusion made of a hard material that snaps into a snap-in groove. Specifically, a guide groove 134 is formed between the outlet 133 and the outer wall of the housing 1, with a snap-in groove within the guide groove 134. The telescopic loop 4 is made of a flexible material. The end of the telescopic loop 4 connected to the filter holder is open, and a lip extending outward from the opening is made of a hard material and is suitable for snapping into the snap-in groove, thereby securing one end of the telescopic loop 4 relative to the housing 1. The guide groove 134 gradually widens from the outlet 133 toward the outer side of the housing 1 to facilitate the extension and retraction of the telescopic loop 4. Furthermore, the telescopic loop 4 prevents the first and second cords 22, 32 from being pulled out completely even when they are fully wound, even if they are still subject to tension. The telescopic loop 4 provides greater tensile strength and better protection for the first and second cords 22, 32.

[0076] Moreover, if Figure 3 As shown, the pet-slipping traction device 100 also includes a wire guide structure 7, which includes a first guide wheel 71 rotatably disposed within the housing 1. The first guide wheel 71 is adapted to form a wire clamping area between the first guide wheel 71 and the second winding drum 31. The wire clamping area is adapted to allow the first rope 22 and the second rope 32 to pass through and be guided toward the wire outlet 133 under the guidance of the first guide wheel 71. The wire clamping area is adapted to clamp the first rope 22 on both sides of the winding end and form a friction force with the first rope 22. Under the action of the first guide wheel 71, the second rope 32 is caused to adhere to the outside of the first rope 22 after passing through the wire clamping area. Friction is generated between the first rope 22 and the first guide wheel 71 and the second winding module 3. The rotation of the second winding module 3 drives the first rope 22 to move under the action of the friction force, so that the first rope 22 can still be wound in or out through the second winding module 3 without activating the first drive structure. When the first drive mechanism 5 and the second drive mechanism 6 are turned on at the same time, the winding and unwinding forces can be greater, which can better cope with different traction conditions, making the traction device more applicable and providing a better user experience.

[0077] The first guide wheel 71 is cylindrical and rotatably mounted on the bottom of the groove of the transition bracket 13. Preferably, the first guide wheel 71 is located on the same plane as the first mounting hole 131 and the second mounting hole 132. The first guide wheel 71 is located on one radial side of the second mounting hole 132 and is arranged near the wire outlet 133. The guide surface of the first guide wheel 71 is suitable for corresponding to the winding area of ​​the first winding module 2 and the winding area of ​​the second winding module 3. The guide surface of the first guide wheel 71 is the outer circumferential surface of the first guide wheel 71. The first rope 22 wound from the first winding drum 21 can be inserted into the clamping area. The clamping traction force of the clamping area on the first rope 22 can make the first rope 22 between the first winding drum 21 and the first guide wheel 71 be in a tensioned state, so as to facilitate the winding in or out of the first rope 22. The second rope 32 wound from the second winding drum 31 can be abutted and reversed by the first guide wheel 71 , so that the second rope 32 can be led out toward the wire outlet 133 .

[0078] The above-mentioned wire clamping area is formed between the outer peripheral side of the second winding drum 31 and the first guide wheel 71, so that when the first rope 22 passes through the wire clamping area, the second winding drum 31 and the first rope 22 can be arranged in an interference fit, so that when the second winding drum 31 rotates, the first rope 22 is driven to move by friction. Therefore, when only the second winding drum 31 is rotated, the first rope 22 can also be driven to be wound in or out of the first winding drum 21, which saves more energy.

[0079] Because the second rope 32 is stiffer than the first rope 22, the second rope 32 can be tensioned by itself when winding out, without requiring traction by the first guide wheel 71. Therefore, placing the first guide wheel 71 near the second mounting hole 132 provides better tension for the first rope 22 and allows the second rope 32 to be redirected, allowing it to better adhere to the first rope 22 and be led out together through the outlet 133.

[0080] Further, combined with Figure 6 and Figure 8As shown, the wire assembly guide structure 7 also includes a second guide wheel 72 and a third guide wheel 73 rotatably mounted on the bottom of the groove of the filter bracket. The second guide wheel 72 and the third guide wheel 73 are located in the wire path between the first mounting hole 131 and the first guide wheel 71. The first guide wheel 71, the second guide wheel 72, and the third guide wheel 73 are all located on the same side of the first mounting hole 131 and are arranged in a non-linear manner. Preferably, the first guide wheel 71, the second guide wheel 72, and the third guide wheel 73 are arranged in a triangular shape. After being wound from the first winding drum 21, the first rope 22 first passes through the third guide wheel 73, then around the second guide wheel 72, and then enters the wire clamping area. The second guide wheel 72 and the third guide wheel 73 further tension the first rope 22 between the first guide wheel 71 and the first winding drum 21, preventing the first rope 22 from becoming too loose and forming a tangle within the traction device.

[0081] Furthermore, the first mounting hole 131 and the second mounting hole 132 are located on the same side of the cable outlet 133. The first guide wheel 71 is provided corresponding to the cable outlet 133, while the second guide wheel 72 and the third guide wheel 73 are located on the other side of the cable outlet 133. For example, the first mounting hole 131 and the second mounting hole 132 are located on the left side of the cable outlet 133, while the second guide wheel 72 and the third guide wheel 73 are located on the right side of the cable outlet 133. The first guide wheel 71 is provided directly opposite the cable outlet 133. This allows the second guide wheel 72 and the third guide wheel 73 to be away from the first winding drum 21, thereby improving the traction and tensioning effect of the first rope 22. The internal space of the first cavity is rationally utilized, resulting in a smaller overall volume.

[0082] Along the winding direction of the first rope 22, the second guide wheel 72 is located between the first guide wheel 71 and the third guide wheel 73. Of the first, second, and third guide wheels 71, 72, and 73, the distance between the third guide wheel 73 and the first mounting hole 131 and the distance between the third guide wheel 73 and the cable outlet 133 are the greatest. The third guide wheel 73 allows the first rope 22 to be fully stretched, ensuring sufficient tension before exiting the cable outlet 133. This allows for smoother winding of the first rope 22.

[0083] The first driving structure is mainly used to drive the first winding drum 21 to rotate. Figure 4 and Figure 7As shown, the first drive structure includes a first driver 51 and a first drive disc 52 connected to the first driver 51. The first drive disc 52 is provided with a positioning portion 53 that is adapted to engage with a mating portion on the first winding module 2. The first driver 51 is configured to drive the first drive disc 52 to rotate, and the positioning portion 53 and the mating portion cooperate to drive the first winding module 2 to rotate. The first driver 51 can be configured as a motor or an electric cylinder. The first drive disc 52 is connected to the drive shaft of the first driver 51 and is coaxially arranged with the first mounting hole 131. When the first winding drum 21 is mounted in the first mounting hole 131, the first drive disc 52 and the first winding drum 21 are coaxially arranged. The first drive disc 52 is detachably connected to the first winding drum 21. When the first driver 51 drives the first drive disc 52 to rotate, the first winding drum 21 is rotated, thereby rotating the first winding drum 21, thereby achieving winding and unwinding of the first rope 22.

[0084] Moreover, the first driver 51 can drive the first driving disk 52 to rotate forward and reverse, thereby driving the first winding disk 21 to rotate forward and reverse, so as to control the unwinding and winding of the first rope 22, so that both winding and unwinding can be achieved by the first driver 51, which is more labor-saving and easier for users to operate.

[0085] Preferably, the positioning portion 53 includes a plurality of first connection holes 531 and a plurality of first positioning holes 532 provided on the first drive disk 52, and the plurality of first connection holes 531 and the plurality of first positioning holes 532 are arranged at intervals along the same circumference. The plurality of first positioning holes 532 are first positioned circumferentially with the first winding disk 21, and then connected to the plurality of first connection holes 531 and the plurality of second connection holes of the first winding disk 21 through a plurality of connecting members, thereby completely fixing the first winding disk 21 on the first drive disk 52, so that when the first drive disk 52 rotates, the first winding disk 21 is better driven to rotate. The arrangement of the positioning portion 53 includes but is not limited to the above, so as to facilitate the disassembly and assembly of the first winding disk 21 and the first drive disk 52, which will not be described in detail here.

[0086] In one embodiment, the configuration of the second driving structure may be consistent with the configuration of the first driving structure.

[0087] In another embodiment, because the coil spring can provide a certain winding force, and the distance between the second rope 32 and the outlet 133 is closer than that of the first rope 22, the retraction and extension speed of the second rope 32 should be slower than that of the first rope 22 to better ensure that the two have consistent retraction and extension speeds. Specifically, the second drive structure includes a second driver and a reduction gear 62 connected to the second driver. The reduction gear 62 has an output portion 621, which is adapted to engage with the second winding module 3 to prevent rotation. The second driver drives the reduction gear 62 to rotate, driving the second winding module 3 to rotate together. The reduction gear 62 can effectively adjust and control the retraction and extension speed of the second rope 32, thereby better matching the retraction and extension speed of the first rope 22.

[0088] Furthermore, the reduction gear 62 is configured as a planetary reducer, which includes a planetary carrier. The output portion 621 includes a transmission slot 6211 provided on the side of the planetary carrier facing away from the second drive. The transmission slot 6211 is adapted to cooperate with the transmission boss on the second winding module 3, so that the rotation of the planetary carrier drives the second winding module 3 to rotate together. This makes it easier to install the second winding module 3 on the second drive structure, and the assembly operation is simpler and more convenient.

[0089] Furthermore, the pet-pulling device 100 may include a controller. A detection device, such as a position sensor and / or a force sensor, may be provided on the first and / or second ropes 22 and 32. The controller is electrically connected to the detection device and to the first and second actuators 51 and 52. When the position sensor detects that the first and / or second ropes 22 and 32 are at their unwinding limit, the controller can control the first and second actuators 51 and 52 to rotate in opposite directions based on the position sensor's detection mechanism to rewind the first and second ropes 22 and 32, thereby preventing the traction ropes from being completely pulled out and damaged. Furthermore, when the force sensor detects that the pulling force on the first and / or second ropes 22 and 32 is excessive or insufficient, the controller can control the rotation direction of the first and second actuators 51 and 52 based on the force sensor's detection mechanism to rewind or unwind the first and second ropes 22 and 32, thereby preventing the traction ropes from being subjected to excessive pulling force and causing breakage. Furthermore, the detection results can be used to determine the pet's condition, enabling a more effective traction force and direction similar to that of a human traction, thereby enhancing the user experience.

[0090] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A pet traction device, characterized in that: include: A housing, wherein a wire outlet is provided on one side of the housing; a first winding module disposed in the housing and comprising a first winding drum and a first rope, wherein the first rope has an unwinding end wound out from the first winding drum; a second winding module disposed in the housing and comprising a second winding drum and a second rope, wherein the second rope has an outlet end wound from the first winding drum, and the outlet end of the second rope is connected to the outlet end of the first rope; a first driving mechanism connected to the first winding drum, for driving the first winding drum to rotate forward and reverse; a second driving mechanism connected to the second winding drum, for driving the second winding drum to rotate in a forward and reverse direction; The first driving mechanism drives the first winding drum to rotate and / or the second driving mechanism drives the second winding drum to rotate, so that the first rope and the second rope can be synchronously extended or retracted from the wire outlet.

2. The pet traction device according to claim 1, characterized in that: At least one of the first winding module and the second winding module is provided with an elastic member, and the elastic member can provide an elastic winding force; Among them, when the tension applied to the unwinding end of the second rope and the unwinding end of the first rope is greater than the winding force of the elastic member, the first winding drum and the second winding drum can be driven to rotate in the unwinding direction under the action of the first rope and the second rope; when the tension applied to the unwinding end of the second rope and the unwinding end of the first rope is less than the winding force of the elastic member, the first winding drum and the second winding drum can be driven to rotate in the winding direction under the action of the winding force of the elastic member.

3. The pet traction device according to claim 2, characterized in that: The elastic member is configured as a coil spring, which is provided on the second winding drum. When the second winding drum rotates in the unwinding direction, the coil spring is in a tightened energy storage state to generate a winding force. When the external force applied to the second rope is removed or is less than the winding force of the winding spring, the winding spring releases energy to drive the second winding drum to rotate in the winding direction.

4. The pet traction device according to claim 1, characterized in that: The second rope has a stiffness greater than that of the first rope.

5. The pet traction device according to claim 1, characterized in that: The shell includes a first shell, a second shell, and a transition bracket located between the first shell and the second shell, a first cavity is formed between the transition bracket and the first shell, and a second cavity is formed between the transition bracket and the second shell; The transition bracket is provided with a first mounting hole and a second mounting hole. At least part of the rotation of the first winding drum is arranged in the first mounting hole, and the first rope is located in the first cavity. At least part of the rotation of the second winding drum is arranged in the second mounting hole, and the second rope is also located in the first cavity. The first drive mechanism and the second drive mechanism are both located in the second cavity.

6. The pet traction device according to claim 4, characterized in that: The first rope also has a fixed end opposite to its winding end; the first winding drum comprises: A first winding chassis is rotatably mounted in the first mounting hole and has a winding groove protruding from one side of the first winding chassis along its axial direction. The winding groove protrudes from the first mounting hole and has a notch on one side. The fixed end of the first rope is sleeved in the winding groove, and the first rope can be wound out of the notch to be wound around the outer circumference of the winding groove. The first cover plate is connected to the transition bracket and covers the notch of the winding groove, so that the first winding chassis can rotate relative to the first cover plate.

7. The pet traction device according to claim 4, characterized in that: The second rope has a fixed end opposite to its winding end; the second winding drum comprises: a second winding chassis rotatably mounted in the second mounting hole and having a winding ring protruding from the second mounting hole, wherein the outer periphery of the winding ring is provided with a groove extending along the circumference thereof, and the winding end of the second rope is connected to the groove; a second cover plate, which covers the end portion of the inner ring side of the winding ring and enables the second winding chassis to rotate relative to the second cover plate; A pressure plate connected to the transition bracket and forming a rotation-stopping fit with the second cover plate; The coil spring has a central end and a free end, wherein the central end is arranged on the second winding chassis, and the free end is connected to the second cover plate.

8. The pet traction device according to claim 1, characterized in that: The pet-slipping traction device also includes a wire group guiding structure, which includes a first guide wheel rotatably arranged in the shell, and the first guide wheel is suitable for forming a wire clamping area between the first guide wheel and the second winding drum, and the wire clamping area is suitable for allowing the first rope and the second rope to pass through, and guided toward the wire outlet under the guiding action of the first guide wheel, the wire clamping area is suitable for clamping the two sides of the winding end of the first rope respectively, and forming a friction force with the first rope, and under the action of the first guide wheel, the second rope is attached to the outside of the first rope after passing through the wire clamping area.

9. The pet traction device according to claim 1, characterized in that: The first driving structure includes a first driver and a first driving disk connected to the first driver. The first driving disk is provided with a positioning portion, and the first winding disk is provided with a matching portion that matches the positioning portion. The first driver is used to drive the first driving disk to rotate, and drive the first winding disk to rotate together with the cooperation of the positioning portion and the matching portion.

10. The pet traction device according to claim 1, characterized in that: The second driving structure includes a second driver and a deceleration device connected to the second driver. The deceleration device has an output part, and the output part is locked in rotation with the second winding drum. The second driver drives the deceleration device to rotate, driving the second winding drum to rotate together.

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