CN216219492U

CN216219492U - Pet traction device

Info

Publication number: CN216219492U
Application number: CN202121847090.XU
Authority: CN
Inventors: 姜晓平
Original assignee: Shenzhen Qianye Precision Metal Co ltd
Current assignee: Shenzhen Qianye Precision Metal Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-04-08
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a pet traction device, comprising: the device comprises a box body, a mounting column on the inner wall of the box body, a reel, a volute spiral spring arranged between the reel and the mounting column, and a pulling rope wound on the reel and with one end extending out of the box body; scroll spring both ends are fixed respectively on erection column and reel, and scroll spring includes: the outer ring part clings to the inner wall of the reel disc and the pre-tightening part is positioned between the outer ring part and the mounting column. The volute spiral spring comprises an outer ring part positioned on the inner wall of the reel and a pre-tightening part positioned between the reel and the mounting column, when the volute spiral spring releases and accumulates elastic potential energy, a deformation part is mainly concentrated between the pre-tightening part and the outer ring part, so that the change of the bending angle of the volute spiral spring on the mounting column part is reduced, the metal fatigue influence of the volute spiral spring is reduced, the problem that the volute spiral spring is frequently fatigue-damaged due to large bending angle and frequent change is solved, and the service life of the pet traction device is prolonged.

Description

Pet traction device

Technical Field

The utility model relates to the technical field of guy ropes or collars, in particular to a pet traction device.

Background

When carrying a pet to walk, the pet is usually pulled by a pulling rope in order to prevent the pet from getting lost or to control the walking direction of the pet. The conventional traction rope usually consists of a rope body and a collar arranged at one end of the rope body, and the length of the traction part of the traction rope can be adjusted only by winding the traction rope on a hand, so that the use is inconvenient.

Referring to fig. 1 and 2, to solve the above problem, the prior art discloses a pet leash device 100, which comprises a box body, a reel 102 disposed in the box body, and a leash 103 wound on the reel 102, wherein a spiral spring 104 is disposed in the reel 102 to provide an elastic force to the reel 102 so as to wind the leash 103. However, this solution has the disadvantage that the fixing piece 104a at one end of the spiral spring 104 is arranged at the center of the reel 102, the spiral spring body 104b is mostly stacked against the inner wall of the reel 102, and the connection between the fixing piece 104a and the reel 102 is relatively weak. When the pulling rope 103 is pulled, the spiral spring body 104b is gradually folded and stacked from the inner wall of the reel 102 to the fixing piece 104a, and the bending angle between the fixing piece 104a and the spiral spring body 104b is reduced; when the tether 103 is retracted, the bending angle between the spiral spring body 104b and the fixed piece 104a is increased. When the pulling rope 103 is repeatedly wound and stretched, the fixing piece 104a and the spiral spring body 104b are easily broken, and the reel 102 loses elastic support and cannot automatically wind the pulling rope 103, so that the service life of the pet traction device 100 is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a volute spiral spring in a pet traction device in the prior art is easy to damage and influences the service life of the pet traction device, the utility model provides the pet traction device which prolongs the service life of the volute spiral spring in a pre-tightening mode and avoids the damage of the volute spiral spring.

The utility model is realized by the following technical scheme:

a pet leash device, comprising: the winding device comprises a box body, a mounting column arranged on the inner wall of the box body, a reel arranged on the mounting column, a volute spiral spring arranged between the reel and the mounting column, and a pulling rope wound on the reel and with one end extending out of the box body;

scroll spring both ends are fixed respectively the erection column with on the reel, scroll spring includes: the outer ring part clings to the inner wall of the reel disc and the pre-tightening part is positioned between the outer ring part and the mounting column.

Furthermore, a fixing groove is formed in the mounting column, a first fixing piece is arranged at one end of the pre-tightening portion, and the first fixing piece is inserted into and fixed in the fixing groove.

Further, a wall groove is formed in the inner wall of the reel, a second fixing piece is arranged at one end of the outer ring portion, and the second fixing piece is inserted into and fixed in the fixing groove.

Further, when the pulling rope moves out of the box body, the reel and the first fixing piece are driven to rotate along a first direction, and the second fixing piece is inserted into and fixed in the fixing groove along a second direction; the first direction is opposite to the second direction.

Further, set up on the box body and hold the chamber and set up and be in hold the handle of chamber one side, the erection column sets up hold in the intracavity wall, the reel is installed hold in the chamber, the rolling is in on the reel the lead rope hold and accomodate hold in the chamber.

Further, the box body comprises a first shell and a second shell, and the first shell and the second shell are combined to form the accommodating cavity;

the mounting post is disposed on an inner wall of the first housing.

Further, the first shell comprises a side groove arranged along the edge of the inner wall of the first shell; the second shell comprises a convex edge arranged along the edge of the inner wall of the second shell; the convex edge is inserted into the edge to close the containing cavity.

Furthermore, the box body is provided with a through hole, and the pulling rope extends out of the box body through the through hole.

Furthermore, one end of the pulling rope extending out of the box body is provided with a fixing ring which is abutted against the through hole so as to limit the maximum winding length of the pulling rope on the reel.

Furthermore, the box body is provided with a key, and the key is exposed out of the surface of the box body; the reel is characterized in that a plurality of positioning bulges are arranged on the outer wall of the reel and arranged along the edge of the outer wall of the reel to push the key, the key part is abutted against the positioning bulges, and the reel is fixed relative to the key.

The utility model has the beneficial effects that:

the volute spiral spring in the reel of the pet traction device comprises an outer ring part positioned on the inner wall of the reel and a pre-tightening part positioned between the reel and the mounting column, the reel rotates to enable the outer ring part in the middle of the volute spiral spring to move inwards to form the pre-tightening part, the volute spiral spring is driven to deform by the rotation of the reel in the process of frequently winding and unwinding the traction rope, when the volute spiral spring releases and accumulates elastic potential energy, the deformed part is mainly concentrated between the pre-tightening part and the outer ring part, the change of the bending angle of the volute spiral spring on the mounting column part is reduced, the metal fatigue influence of the volute spiral spring is reduced, the problem of fatigue damage caused by large bending angle and frequent change of the volute spiral spring is prevented, and the service life of the pet traction device is further prolonged.

Drawings

FIG. 1 is a schematic view of a prior art scroll spring in its initial state;

FIG. 2 is a schematic view of a prior art scroll spring for accumulating elastic potential energy therein;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic view of an exploded structure of the present invention;

fig. 5 is an exploded view of another aspect of the present invention.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 3 to 5, the present invention discloses a pet dragging device, including: box body 1, setting are in erection column 11 on the 1 inner wall of box body, install reel 2 on the erection column 11, install reel 2 with spiral spring 3 between the erection column 11 and the rolling are in on the reel 2 and one end is prolonged the guy rope 4 of box body 1.

In the pet leash pulling device according to the present invention, one end of the leash 4 is fixed to the reel 2, and the leash 4 is wound around the reel 2 and accommodated in the case 1. When the traction rope 4 is dragged, the traction rope 4 gradually extends out of the box body 1 to drive the reel 2 to rotate, and the volute spiral spring 3 accumulates elastic potential energy; when the traction rope 4 is withdrawn, the spiral spring 3 releases elastic potential energy to drive the reel 2 to rotate and wind the traction rope 4.

The scroll spring 3 includes: an outer ring part 32 abutting against the inner wall of the reel 2 and a pretensioning part 31 between the outer ring part 32 and the mounting post 11. The pre-tightening part 31 is formed by rotating the reel 2 for several times in the initial state of the spiral spring 3, in the initial state, most of the spiral spring 3 is in a spiral state and is abutted against the inner wall of the reel 2, and the innermost part of the spiral spring 3 extends to the mounting column 11 and is fixed. When the reel 2 is rotated, the outer ring part 32 of the spiral spring 3 is gradually deformed to be close to the mounting column 11 to form the pre-tightening part 31, and the pre-tightening part 31 is the position where the spiral spring 3 accumulates elastic potential energy. Therefore, the portion of the spiral spring 3 that is mainly deformed during the rotation of the reel 2 is the biasing portion 31. The larger the proportion of the pretensioned portion 31 in the spiral spring 3 is, the larger the elastic potential energy of the spiral spring 3 becomes, and the smaller the proportion of the pretensioned portion 31 in the spiral spring 3 is, the smaller the elastic potential energy of the spiral spring 3 becomes.

The scroll spring 3 is characterized in that two ends of the scroll spring 3 are fixed on the mounting column 11 and the reel 2, and different from the prior art, when the scroll spring 3 is assembled, the reel 2 is rotated to enable the scroll spring 3 to form a pre-tightening part 31, and when the traction rope 4 is wound and unwound in the subsequent use process, the main deformation of the scroll spring 3 is generated on the pre-tightening part 31, so that the deformation degree of the fixed part of the scroll spring 3 and the mounting column 11 is reduced, and the material fatigue damage caused by repeated large-amplitude bending of the material of the fixed part of the scroll spring 3 and the mounting column 11 is avoided. The service life of the volute spiral spring 3 is prolonged.

Specifically, the mounting relation among the mounting post 11, the reel 2 and the volute spiral spring 3 is as follows:

a fixing groove 11a is formed in the mounting post 11, a first fixing piece 31a is disposed at one end of the spiral spring 3 located at the pre-tightening portion 31, and the first fixing piece 31a is inserted and fixed in the fixing groove 11 a.

In the prior art, when the reel 2 is rotated, the deformation angle between the first fixing piece 31a and the spiral spring 3 is large: in the initial state of the spiral spring 3, the included angle between the spiral spring 3 and the first fixing plate 31a is 90 degrees, and in the drawing-out of the guy rope 4, the included angle between the spiral spring 3 and the first fixing plate 31a is 20 degrees. In this embodiment, the pre-tightening portion 31 is disposed on the proximal side of the first fixing plate 31a, so that an initial included angle between the spiral spring 3 and the first fixing plate 31a is reduced to 50 degrees, when the pulling rope 4 is pulled out, a main deformation portion of the spiral spring 3 is located between the pre-tightening portion 31 and the outer ring portion 32, and a change of an included angle between the pre-tightening portion 31 and the first fixing plate 31a is small, which is equivalent to that the pre-tightening portion 31 buffers a connection portion of the first fixing plate 31 a.

Compared with the prior art, the pre-tightening part 31 of the scroll spring 3 reduces the deformation amount of the part between the scroll spring 3 and the first fixing piece 31a when the reel 2 is rotated, reduces the deformation angle, avoids the problem of material fatigue fracture caused by frequent large-angle bending of the joint of the first fixing piece 31a and the scroll spring 3, and further prolongs the service life of the pet traction device.

A wall groove 21 is formed on the inner wall of the reel 2, and a second fixing piece 32a is provided at one end of the outer ring portion 32, and the second fixing piece 32a is inserted and fixed in the fixing groove 11 a. When the reel 2 is rotated, the reel 2 drives the second fixing piece 32a to further drive the scroll spring 3 to rotate, and the scroll spring 3 accumulates elastic potential energy. When the elastic potential energy is released, the reel 2 is driven to rotate, and the traction rope 4 is wound.

In an embodiment of the utility model, in order to avoid that the second fixing plate 32a is disengaged from the wall slot 21 when the reel 2 is rotated, the reel 2 and the first fixing plate 31a are driven to rotate in a first direction when the guy rope 4 is moved out of the case 1, and the second fixing plate 32a is inserted and fixed in the fixing slot 11a in a second direction; the first direction is opposite to the second direction.

In one embodiment of the present invention, when the pulling rope 4 is pulled, the pulling rope 4 drives the reel 2 to rotate counterclockwise, and the second fixing piece 32a is inserted and fixed in the wall groove 21 in the clockwise direction of the reel 2. When the guy rope 4 is pulled, the spiral spring 3 deforms, and the elastic force drives the second fixing piece 32a to move along the clockwise direction, so that the second fixing piece 32a can be ensured to be stably inserted and fixed in the wall groove 21 in the process of pulling the guy rope 4, and the problem that the spiral spring 3 is separated from the reel 2 is avoided.

The box body 1 is provided with an accommodating cavity 13 and a handle 12 arranged on one side of the accommodating cavity 13, the mounting column 11 is arranged in the inner wall of the accommodating cavity 13, the reel 2 is arranged in the accommodating cavity 13, and the traction rope 4 wound on the reel 2 is accommodated in the accommodating cavity 13. A handle 12 for holding the pet traction device is arranged on one side of the box body 1, and the reel 2, the volute spiral spring 3 and the traction rope 4 are all arranged in the accommodating cavity 13.

The box body 1 comprises a first shell 14 and a second shell 15, the first shell 14 and the second shell 15 are combined to form the accommodating cavity 13, and the mounting column 11 is arranged on the inner wall of the first shell 14.

In an achievable embodiment of the present invention, the first housing 14 includes a side groove 14a disposed along an inner wall edge of the first housing 14; the second casing 15 comprises a convex edge 15a arranged along the edge of the inner wall of the second casing 15; the insertion of the protruding edge 15a into the edge closes the housing cavity 13.

The box body 1 is provided with a through hole 16 communicating the inside and the outside of the accommodating cavity 13, and the pulling rope 4 extends out of the box body 1 through the through hole 16.

The box body 1 is provided with a key 17, and the key 17 is exposed out of the surface of the box body 1. Simultaneously, be provided with a plurality of location archs 22 on the outer wall of reel 2, location archs 22 are cyclic annular, follow the outer wall edge of reel 2 sets gradually. When the key 17 is pressed, the part of the key 17 located in the box body 1 is inserted between the adjacent positioning protrusions 22 and abuts against one of the positioning protrusions 22, so that the function of fixing the reel 2 is achieved.

In an embodiment of the present invention, one side of the positioning protrusion 22 is a plane, and the plane extends to point to the center of the reel 2, and the other side of the positioning protrusion 22 is a curved surface, and the plane is disposed in the first direction of the positioning protrusion 22. When the pulling rope 4 is pulled, the key 17 is pressed, the key 17 abuts against one side of the plane of the positioning bulge 22, the purpose of further rotating the fixed reel 2 can be achieved, in practical application, the current extending length of the fixed pulling rope 4 is obtained, and the pulling rope 4 is prevented from further extending; and when rolling the guy rope 4, the button 17 supports on one side of the curved surface of the positioning protrusion 22, the button 17 can move along the curved surface, the reel 2 can continue to rotate to roll the guy rope 4, the button 17 has no fixing effect on the reel 2, and the button 17 is prevented from blocking the winding of the guy rope 4.

Meanwhile, in order to avoid the problem that the guy rope 4 completely enters the accommodating cavity 13, a fixing ring 41 is arranged at one end, extending out of the box body 1, of the guy rope 4, and the fixing ring 41 abuts against the through hole 16 so as to limit the maximum winding length of the guy rope 4 on the reel 2. Articles such as a collar and the like can be arranged on the fixing ring 41 and used for sleeving the lead 4 on the pet body.

The volute spiral spring 3 in the pet traction device reel 2 comprises an outer ring part 32 positioned on the inner wall of the reel 2 and a pre-tightening part 31 positioned between the reel 2 and the mounting column 11, the reel 2 rotates to enable the outer ring part 32 in the middle of the volute spiral spring 3 to move inwards to form the pre-tightening part 31, the volute spiral spring 3 is driven by the reel 2 to deform in the process of frequently winding and unwinding the traction rope 4, when the volute spiral spring 3 releases and accumulates elastic potential energy, the deformed part is mainly concentrated between the pre-tightening part 31 and the outer ring part 32, the bending angle change of the volute spiral spring 3 on the mounting column 11 is reduced, the metal fatigue influence of the volute spiral spring 3 is reduced, the problem that the volute spiral spring 3 is frequently fatigue damaged due to large bending angle and change is solved, and the service life of the pet traction device is prolonged.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims

1. A pet leash device, comprising: the winding device comprises a box body, a mounting column arranged on the inner wall of the box body, a reel arranged on the mounting column, a volute spiral spring arranged between the reel and the mounting column, and a pulling rope wound on the reel and with one end extending out of the box body;

2. The pet pulling device as defined in claim 1, wherein a fixing groove is formed on the mounting post, and a first fixing piece is formed at one end of the pre-tightening part and inserted and fixed in the fixing groove.

3. The pet leash device as claimed in claim 1, wherein a wall groove is formed on an inner wall of the reel, and a second fixing piece is formed at one end of the outer ring portion and inserted and fixed in the fixing groove.

4. The pet leash pulling device as defined in claim 3, wherein said pulling rope moves out of said case body to rotate said reel and said first fixing piece in a first direction, and said second fixing piece is inserted and fixed in said fixing groove in a second direction; the first direction is opposite to the second direction.

5. The pet drawing device as claimed in claim 1, wherein the case body is provided with a receiving chamber and a handle provided at one side of the receiving chamber, the mounting post is provided in an inner wall of the receiving chamber, the reel is mounted in the receiving chamber, and the lead wound on the reel is received in the receiving chamber.

6. The pet pulling device as defined in claim 5, wherein the case includes a first housing and a second housing, the first housing and the second housing being combined to form the receiving cavity;

the mounting post is disposed on an inner wall of the first housing.

7. The pet leash device of claim 6, wherein said first housing includes a rim groove disposed along an inner wall edge of said first housing; the second shell comprises a convex edge arranged along the edge of the inner wall of the second shell; the convex edge is inserted into the edge to close the containing cavity.

8. The pet leash of claim 1, wherein said case is provided with a through hole, said leash extending out of said case through said through hole.

9. The pet leash pulling device as defined in claim 8, wherein a fixing ring is arranged at one end of the leash extending out of the box body, and the fixing ring is abutted against the through hole to limit the maximum rolling length of the leash on the reel.

10. The pet leash device as claimed in claim 1, wherein said case is provided with a key, said key being exposed on a surface of said case; the reel is characterized in that a plurality of positioning bulges are arranged on the outer wall of the reel and arranged along the edge of the outer wall of the reel to push the key, the key part is abutted against the positioning bulges, and the reel is fixed relative to the key.