Traction rope device and rope winding disc

Abstract

The utility model provides a haulage rope device (1), including shell, rope reel (4), coil spring (3) and rope body (2), the both ends of shaft (43) of rope reel (4) are respectively connected with first reel body (41) and second reel body (42) to form rope reel area (430), the shaft (43) is the ring body that the shaft wall (431) encircles, the diameter of ring body gradually increases along the direction far away from first reel body (41), and the diameter of the ring body gradually increases along the direction far away from second reel body (42). The overall size of the traction rope is greatly reduced, and the rope body is smoothly wound and unwound.

Description

Technical Field

[0001] This utility model relates to the field of traction rope technology, specifically a traction rope device and a rope winding reel. Background Technology

[0002] Leashes are commonly used for pet leashing, outdoor leashing, and bicycle leashing, serving to restrain and pull specific objects, and their application is becoming increasingly widespread. The applicant believes that existing leash devices typically consist of a coiled spring, a leash reel, and a leash assembly housed within a casing. The applicant considers the basic principle and structure of leash winding relatively simple. However, how to optimize the structure of leash devices to improve user experience and aesthetics has not been a focus of industry professionals. For example, Reference 1 mentions placing the leash outlet in the middle of the casing, but this makes the entire casing too large. Similarly, References 2 and 3 have slightly smaller casings, but necessitate placing the leash outlet on one side of the casing to ensure smooth leash deployment and retraction.

[0003] Reference 1: WO2011081534A1

[0004] Reference 2: GB190513115A

[0005] Reference 3: US7334808B2 Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a traction rope device. A traction rope device includes a housing, a rope winding disc installed inside the housing, a coil spring installed on the rope winding disc, and a rope body wound around the rope winding disc. A rope outlet is provided on the side of the housing, with the outlet equidistant from the bottom and top surfaces of the housing. The rope winding disc includes a first disc body and a second disc body that are parallel to each other, and a shaft. The two ends of the shaft are respectively connected to the first disc body and the second disc body, thus forming a rope winding area. A coil spring mounting area is provided on the side of the first disc body opposite to the shaft. The shaft is a ring body formed by the shaft wall, and the diameter of the ring body gradually increases along the direction away from the first disc body.

[0007] Furthermore, a limiting post is provided at the center of the shaft, and the center line of the limiting post and the center line of the shaft wall coincide with the center line of the shaft.

[0008] Furthermore, a slot is provided on the shaft, which extends from the shaft wall to the second disc.

[0009] Furthermore, the coil spring mounting area has a side wall and a fixing plate, which are disposed on the surface of the first disc body.

[0010] Furthermore, a through hole is provided in the center of the limiting post.

[0011] Furthermore, the outer surface of the ring is conical or spindle-shaped. The conical or spindle shape here is not limited to a standard conical or spindle shape. The diameter of the ring gradually increases along the direction of the first disk in principle, so it can be a section of a cone, for example, it can exclude the vertex, or it can be a part of a spindle shape, as long as it can realize the rope winding function of the rope winding area.

[0012] Furthermore, the housing is equipped with a fixing post, and the rope reel is sleeved on the fixing post. The housing includes an upper shell and a lower shell, and also includes fasteners for fixing the upper shell and the lower shell.

[0013] Furthermore, silicone blocks and rope guide plates are also provided on the sides of the shell.

[0014] Furthermore, the traction rope device also includes a limiting ball.

[0015] In addition, this utility model also provides a corresponding rope winding disc for use in a traction rope device, including a first disc body and a second disc body that are parallel to each other, and a shaft. The two ends of the shaft are respectively connected to the first disc body and the second disc body to form a rope winding area. A coil spring mounting area is provided on the side of the first disc body opposite to the shaft. The shaft is a ring body formed by the shaft wall, and the diameter of the ring body gradually increases along the direction away from the first disc body.

[0016] Furthermore, a limiting post is provided at the center of the shaft, and the center line of the limiting post and the center line of the shaft wall coincide with the center line of the shaft. A slot is provided on the shaft, which extends from the shaft wall to the second disc. The coil spring mounting area has a side wall and a fixing plate, which are provided on the surface of the first disc. A through hole is provided at the center of the limiting post.

[0017] Furthermore, the outer surface of the ring is conical or spindle-shaped. The conical or spindle shape here is not limited to a standard conical or spindle shape. The diameter of the ring gradually increases along the direction of the first disk in principle, so it can be a section of a cone, for example, it can exclude the vertex, or it can be a part of a spindle shape, as long as it can realize the rope winding function of the rope winding area.

[0018] The beneficial effects of this utility model traction rope device are: it allows the rope to be smoothly wound and released from the middle of the traction rope shell, greatly reducing the overall volume of the traction rope, and solving the problem that the traction rope device cannot be wound and released smoothly when the rope outlet is located in the middle of the side of the shell under the premise of a small volume. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the traction rope device in the embodiment.

[0020] Figure 2 This is an exploded view of the traction rope device in the embodiment.

[0021] Figure 3 This is a cross-sectional diagram of the traction rope device in the embodiment.

[0022] Figure 4 This is an overall structural diagram of the rope winding disc in the embodiment.

[0023] Figure 5 This is a cross-sectional structural diagram of the rope winding disc in the embodiment.

[0024] Icon labels:

[0025] Traction rope device 1, rope body 2, coil spring 3, rope winding disc 4, rope outlet 5, limit ball 6, rope guide plate 7, silicone block 8, upper shell 11, lower shell 12, fastener 13, traction end 21, rope winding end 22, mounting hole 110, fixing post 120, first disc body 41, second disc body 42, shaft 43, limit post 44, rope winding area 430, side wall 411, fixing plate 412, coil spring mounting area 410, shaft wall 431, seam 45. Detailed Implementation

[0026] like Figure 1-3 As shown, a traction rope device 1 according to one embodiment includes a housing, a rope reel 4 installed in the housing, a coil spring 3 installed on the rope reel 4, and a rope 2 wound on the rope reel 4.

[0027] Specifically, the housing includes an upper shell 11 and a lower shell 12, which are connected by snap-fit ​​or threaded connection. The housing also includes a fastener 13 for fixing the upper shell 11 and the lower shell 12, and the housing has mounting holes 110 that match the fastener 13. The fastener 13 can be a screw, bolt, or other common fasteners, as long as it can achieve the fastening of the housing.

[0028] refer to Figure 1-5 The rope winding disc 4 includes a first disc body 41 and a second disc body 42 that are parallel to each other, and a shaft 43. The two ends of the shaft 43 are respectively connected to the first disc body 41 and the second disc body 42, thereby forming a rope winding area 430. The rope body 2 is wound around the shaft 43 in the rope winding area 430.

[0029] The shell is provided with a rope outlet 5, such as Figure 3 As shown, the rope outlet 5 is equidistant from the bottom and top surfaces of the shell. Figure 3 As shown in the cross-sectional view, the rope outlet 5 is located in the middle of the side of the housing. Its central location is more aesthetically pleasing than that of a location on one side of the housing, and it is also more in line with the user's operating habits.

[0030] The rope body 2 includes a winding end 22 and a traction end 21. The winding end 22 is wound around the shaft 43, and the traction end 21 is located outside the housing through the rope outlet 5 on the housing.

[0031] See Figure 2 The shell is provided with a fixing post 120, which is set on the lower shell 12, and the rope winding disc 4 is sleeved on the fixing post 120.

[0032] like Figure 2 and Figure 5 As shown, a coil spring mounting area 410 is provided on the side of the first disc 41 opposite to the shaft 43. The coil spring mounting area 410 has a side wall 411 and a fixing piece 412, which are disposed on the surface of the first disc 41. The side wall 411 extends upward from the edge of the first disc 41 to form the side wall 411, which surrounds the coil spring mounting area 410, and the coil spring 3 is mounted in the coil spring mounting area 410.

[0033] refer to Figure 3-5 In the spring mounting area 410, near the side wall 411, the first disc 41 protrudes upward to form a fixing plate 413, which is used to fix one end of the spring 3. The other end of the spring 3 is fixed to the fixing post 120. When the rope disc 4 rotates under the pull of the rope, the spring 3 deforms and generates a rebound force, realizing the rope winding process of the traction rope 1 device.

[0034] refer to Figure 5 In some embodiments, the shaft 43 is a ring formed by the shaft wall 431, and the diameter of the ring gradually increases along the direction away from the first disk 41. As can be seen from the figure, the ring formed by the shaft wall 431 is not perpendicular to the first disk 41 or the second disk 42.

[0035] refer to Figure 1-5 In some embodiments, the outer surface of the ring is conical or spindle-shaped. The conical or spindle shape is not limited to a standard conical or spindle shape; the diameter of the ring gradually increases along the direction of the first disk, so it can be a truncated portion of a cone, for example... Figure 5 The apex shown can be a cone or a part of a spindle, as long as it can realize the rope winding function of the rope winding area.

[0036] A limiting post 44 is provided at the center of shaft 43. The center line of the limiting post 44 and the center line of the shaft wall 431 are both coincident with the center line of shaft 43. A through hole is provided at the center of the limiting post 44.

[0037] The rope winding disc 4 is mounted on the fixing post 120 on the lower shell 12 by the limiting post 44, allowing the rope winding disc to rotate.

[0038] refer to Figure 4A slit 45 is provided on the shaft 43, extending from the shaft wall 431 to the second disc 42. When the rope end 22 of the rope body 2 is fixed to the limiting post 44, it can be pulled out from the slit 45 and then wound around the shaft wall 431. Fixing the rope end 22 to the limiting post 44 saves internal space of the traction rope device.

[0039] In other embodiments, the rope end 22 can also be directly fixed to the shaft wall 431, for example, by directly clamping it at the seam 45. The size and position of the seam 45 are not affected by... Figure 4 Due to limitations, it is sufficient to pull out the rope end 22.

[0040] refer to Figure 1-3 In some embodiments, the side of the housing of the traction rope device 1 is further provided with a silicone block 8 and a rope guide plate 7. The rope guide plate 7 is located at the rope outlet 5 to make the rope 2 move in and out more smoothly. The traction rope device 1 also includes a limiting ball 6, which is located outside the housing and can be fixed when the traction rope is released to a fixed length, preventing the rope 2 from being pulled back by the rebound force of the coil spring 3. The silicone block 8 is located on the outer side of the housing and has a scratch-resistant function, making the traction rope device feel better when picked up.

[0041] The inventors recognized that in the prior art, the traction rope device, in order to place the rope in the middle of the housing, resulted in a large overall structure (such as the solution in Reference 1). This is because, in the prior art, in order to allow the rope to be smoothly wound and unwound on the shaft, the rope outlet is aligned with the middle position of the shaft. However, due to the presence of the coil spring mounting area, the center position of the shaft cannot correspond to the middle position of the entire traction rope device housing. Therefore, either the rope outlet is offset to one side (such as the solutions in References 2 and 3), which affects the aesthetics and the user's feel, or the entire traction rope device housing is made larger so that the rope outlet is visually located in the middle of the housing. The structural improvement in this utility model allows the rope to be smoothly wound and unwound from the middle of the traction rope housing, greatly reducing the overall volume of the traction rope. This solves the problem that the traction rope device cannot achieve smooth winding and unwound when the rope outlet is located in the middle of the side of the housing within a smaller volume.

[0042] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A traction rope device (1), comprising a housing, a rope winding disc (4) installed inside the housing, a coil spring (3) installed on the rope winding disc (4), and a rope body (2) wound around the rope winding disc (4), wherein a rope outlet (5) is provided on the side of the housing, the rope outlet (5) being equidistant from the bottom and top surfaces of the housing, the rope winding disc (4) comprising a first disc body (41) and a second disc body (42) parallel to each other, and a shaft (43), the two ends of the shaft (43) being respectively connected to the first disc body (41) and the second disc body (42) to form a rope winding area (430), a coil spring mounting area (410) being provided on the side of the first disc body (41) opposite to the shaft (43), and the shaft (43) being a ring body formed by the shaft wall (431), characterized in that: The diameter of the ring gradually increases along the direction away from the first disk (41).

2. The traction rope device (1) according to claim 1, characterized in that: The center of the shaft (43) is provided with a limiting post (44), and the center line of the limiting post (44) and the center line of the shaft wall (431) coincide with the center line of the shaft (43).

3. The traction rope device (1) according to claim 2, characterized in that: The shaft (43) has a slot (45) that extends from the shaft wall (431) to the second disc (42).

4. The traction rope device (1) according to claim 1, characterized in that: The coil spring mounting area (410) has a side wall (411) and a fixing piece (412), the side wall (411) and the fixing piece (412) being disposed on the surface of the first disc body (41).

5. The traction rope device (1) according to claim 2, characterized in that, The center of the limiting post is provided with a through hole.

6. The traction rope device (1) according to claim 1, characterized in that: The outer surface of the ring is conical or spindle-shaped.

7. The traction rope device (1) according to claim 1, characterized in that: The housing is provided with a fixing post (120), and the rope winding disc (4) is sleeved on the fixing post (120). The housing includes an upper shell (11) and a lower shell (12), and also includes fasteners (13) for fixing the upper shell (11) and the lower shell (12).

8. A rope winding disc (4) for a traction rope device, comprising a first disc body (41) and a second disc body (42) parallel to each other, and a shaft (43), wherein the two ends of the shaft (43) are respectively connected to the first disc body (41) and the second disc body (42) to form a rope winding area (430), wherein a coil spring mounting area (410) is provided on the side of the first disc body (41) opposite to the shaft (43), and the shaft (43) is a ring body formed by the shaft wall (431), characterized in that: The diameter of the ring gradually increases along the direction away from the first disk (41).

9. The rope winding disc (4) according to claim 8, characterized in that: The shaft (43) is provided with a limiting post (44) at its center. The center line of the limiting post (44) and the center line of the shaft wall (431) are both coincident with the center line of the shaft (43). The shaft (43) is provided with a slot (45) that extends from the shaft wall (431) to the second disc (42). The coil spring mounting area (410) has a side wall (411) and a fixing piece (412). The side wall (411) and the fixing piece (412) are disposed on the surface of the first disc (41). The limiting post is provided with a through hole at its center.

10. The rope reel (4) according to claim 8, characterized in that: The outer surface of the ring is conical or spindle-shaped.

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