A pull cord device

Abstract

The utility model relates to the technical field of infant articles, in particular to a pull rope device. A pull rope device, including the handle bar, and the pull rope of wearing in the handle bar, the handle bar includes mutually the upper casing and lower casing of cover, and the fixed cavity is formed between the upper casing and lower casing, one -way locking mechanism is fixed in the fixed cavity, the pull rope is worn on this one -way locking mechanism, when one -way locking mechanism is in the locking state, and the pull rope can only be unidirectionally pulled out. The utility model discloses through the design of one -way locking mechanism, can the use length of the pull rope in the pull rope device be adjusted quickly, when the pull rope device is used as the part of the walking aid and uses, can adaptively adjust according to the height of baby, realize the effect that the walking aid is suitable for the use of the baby of various height. Meanwhile, the pull rope device has separate use value, can be adapted to various need lifting, the article of traction, simple structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of infant and toddler products technology, and in particular to a rope puller. Background Technology

[0002] A baby walking harness is a device that helps babies learn to walk. The pull rope used on the baby walking harness can not only be used as a traction rope for the baby walking harness, but can also be used separately, such as as a child anti-lost harness. It can be used to help the baby with safety protection and movement synchronization when learning to walk, and can also be removed separately after the baby can walk and used for purposes such as letting the baby go or losing the harness.

[0003] Existing walking harnesses generally use a fixed method, achieved through safety locks and other means. For example, the technical solution disclosed in Taiwan Patent TW1326340B is as follows: a pull rope device, which includes: a frame, the frame including a first outer shell and a second outer shell, the first outer shell and the second outer shell are combined to form the frame, a locking chamber and a control chamber are formed inside the frame, the locking chamber is located on one side of the frame, the control chamber is located on the other side of the frame, and a fastener is installed inside the locking chamber; A locking device that restricts the movement of a rope in a single direction includes a ratchet, a first locking disc, a second locking disc, and a control component. The ratchet, the first locking disc, and the second locking disc are sequentially fitted onto the locking component. The second locking disc is located on the locking component near one end of the second housing. The control component is housed in a control room. The control component has a locking block protruding towards the ratchet and can abut against the ratchet. The feature is that the control component has a stop block protruding between the first locking disc and the second locking disc to abut against the rope.

[0004] The aforementioned existing technology not only lacks adjustable length but also cannot be used independently, losing its value once the infant learns to walk, resulting in a very short service life. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a rope puller that is simple in structure, easy to use, provides one-way locking, and offers high security. To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A pull cord device includes a handle and a pull cord threaded through the handle. The handle includes an upper housing and a lower housing that overlap each other, forming a fixed cavity between the upper and lower housings. A one-way locking mechanism is fixed in the fixed cavity, and the pull cord is threaded through the one-way locking mechanism. When the one-way locking mechanism is in a locked state, the pull cord can only be pulled out in one direction. The one-way locking mechanism includes a button, a locking part, and a rotating part. A sliding groove is provided on the upper surface of the upper housing, and the button is confined within the sliding groove.

[0007] Based on the above technical solution, the present invention may also adopt the following further technical solutions:

[0008] The lower part of the button is also provided with a pressure plate that extends into the upper housing. The lower part of the pressure plate is provided with a pressure head, which presses against and limits the locking part. The upper side of the pressure plate is also provided with a protruding slide.

[0009] The upper end of the locking part is provided with a pressure cavity, and the pressing head of the button and the locking part abut against each other in the pressure cavity.

[0010] The lower front part of the locking part is provided with a protruding locking tooth, the upper surface of which is flat and the outer side surface of which is inclined.

[0011] The locking part has a convex truncated cone behind it, and the lower housing has a pressure seat inside it. The pressure seat has a pressure cavity. One end of a spring is sleeved on the truncated cone, and the other end of the spring abuts against the pressure cavity.

[0012] A rotating shaft is provided at the center of the rotating part, and a baffle is provided inside the lower housing to surround the rotating part. A rotating hole is provided on the baffle, and the end of the rotating shaft is confined within the rotating hole.

[0013] The rotating part is provided with a helical gear, and helical teeth are arranged at intervals along the outer periphery of the helical gear. The cross-section of the helical teeth is a right trapezoid, and the locking teeth mesh with the helical teeth.

[0014] The pull rope is fixed to the rotating part of the one-way locking mechanism. When the pull rope is pulled or pulled, the pull rope drives the rotating part of the one-way locking mechanism to rotate.

[0015] When the button is near the outer end of the grip, the one-way locking mechanism is in the locked state, and the pull cord can only be pulled out in one direction. When the button is near the center of the grip, the one-way locking mechanism is in the unlocked state, and the pull cord can be pulled out or tightened.

[0016] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0017] This invention, through its one-way locking mechanism, allows for quick adjustment of the pull cord length. When used as part of a baby walking harness, the pull cord can be adaptively adjusted to suit the baby's height, making it suitable for babies of various heights. Simultaneously, the pull cord has independent practical value; for example, after a baby learns to walk, one end of the pull cord can be secured to the infant, and the length can be adjusted to use it as an anti-wandering harness. Therefore, this invention's pull cord has a wide range of applications, can be adapted to various items requiring lifting or traction, and is simple in structure and easy to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a rope puller according to the present invention.

[0019] Figure 2 This is a schematic diagram of the lower housing structure of a rope puller according to this utility model.

[0020] Figure 3 This is a longitudinal sectional view of a rope puller according to the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of a rope puller after removing the upper shell.

[0022] The components include: a pull rope 1, an upper housing 2, a sliding groove 21, a lower housing 3, a top pressure seat 31, a top pressure cavity 32, a barrier 33, a rotating hole 34, a button 41, a pressure plate 411, a pressure head 412, a locking part 42, a top pressure cavity 421, a locking tooth 422, a frustum 423, a rotating part 43, a rotating shaft 431, a helical gear 432, a helical tooth 433, and a spring 5. Detailed Implementation

[0023] The present invention provides a rope puller in conjunction with the accompanying drawings.

[0024] Examples, such as Figure 1-4 As shown, a rope puller includes a handle and a rope 1 threaded inside the handle.

[0025] The handle includes an upper housing 2 and a lower housing 3 that overlap each other, forming a fixed cavity between the upper housing 2 and the lower housing 3. A one-way locking mechanism is fixed inside the fixed cavity, and the pull rope 1 is threaded through the one-way locking mechanism. When the one-way locking mechanism is in the locked state, the pull rope 1 can only be pulled out in one direction.

[0026] Furthermore, the one-way locking mechanism includes a button 41, a locking part 42, and a rotating part 43. The upper surface of the upper housing 2 is provided with a sliding groove 21, and the button 41 is confined within the sliding groove 21.

[0027] Furthermore, the lower part of the button 41 is provided with a pressure plate 411 that extends into the upper housing 2. The lower part of the pressure plate 411 is provided with a pressure head 412, which presses against and limits the locking part 42. The upper side of the pressure plate 411 is also provided with an outwardly protruding slide.

[0028] Furthermore, the upper end of the locking part 42 is provided with a pressing cavity 421, and the pressing head 412 of the button 41 and the locking part 42 abut against each other in the pressing cavity 421.

[0029] Furthermore, a protruding locking tooth 422 is provided at the lower front part of the locking part 42. The upper surface of the locking tooth 422 is flat, and the outer side surface of the locking tooth 422 is inclined.

[0030] Furthermore, a convex frustum 423 is provided behind the locking part 42, and a top pressure seat 31 is provided inside the lower housing 3. The top pressure seat 31 has a top pressure cavity 32. One end of a spring 5 is sleeved on the frustum 423, and the other end of the spring 5 abuts against the top pressure cavity 32.

[0031] Furthermore, a rotating shaft 431 is provided at the center of the rotating part 43, and a enclosure 33 is provided inside the lower housing 3 to surround the rotating part 43. A rotating hole 34 is provided on the enclosure 33, and the end of the rotating shaft 431 is confined within the rotating hole 34.

[0032] Furthermore, the rotating part 43 is provided with a helical gear 432, and helical teeth 433 are arranged at intervals along the outer periphery of the helical gear 432. The cross section of the helical teeth 433 is a right trapezoid, and the locking teeth 422 mesh with the helical teeth 433.

[0033] Furthermore, the pull rope 1 is fixed to the rotating part 43 of the one-way locking mechanism. When the pull rope 1 is pulled or pulled, the pull rope 1 drives the rotating part 43 of the one-way locking mechanism to rotate.

[0034] In specific usage mode: when button 41 is near the outer end of the handle, the one-way locking mechanism is in the locked state, and the pull rope 1 can only be pulled out in one direction, i.e. Figure 1 The button position on the left end of the grip lever. When button 41 is near the center of the grip lever, the one-way locking mechanism is unlocked, and the pull cord 1 can be pulled out or tightened, thus changing the length of the pull cord 1 below the grip lever, i.e. Figure 1 The status of the button on the right end of the center grip.

[0035] This utility model has been illustrated and described with reference to preferred embodiments; however, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A rope puller, characterized in that... The device includes a grip and a pull cord threaded through the grip. The grip includes an upper housing and a lower housing that overlap each other, forming a fixed cavity between the upper and lower housings. A one-way locking mechanism is fixed in the fixed cavity, and the pull cord is threaded through the one-way locking mechanism. When the one-way locking mechanism is in the locked state, the pull cord can only be pulled out in one direction. The one-way locking mechanism includes a button, a locking part, and a rotating part. The upper surface of the upper housing is provided with a sliding groove, and the button is confined within the sliding groove.

2. A rope puller according to claim 1, characterized in that... The lower part of the button is also provided with a pressure plate that extends into the upper housing. The lower part of the pressure plate is provided with a pressure head, which presses against and limits the locking part. The upper side of the pressure plate is also provided with a protruding slide.

3. A rope puller according to claim 2, characterized in that... The upper end of the locking part is provided with a pressure cavity, and the pressing head of the button and the locking part abut against each other in the pressure cavity.

4. A rope puller according to claim 1, characterized in that... The lower front part of the locking part is provided with a protruding locking tooth, the upper surface of which is flat and the outer side surface of which is inclined.

5. A rope puller according to claim 1, characterized in that... The locking part has a convex truncated cone behind it, and the lower housing has a pressure seat inside it. The pressure seat has a pressure cavity. One end of a spring is sleeved on the truncated cone, and the other end of the spring abuts against the pressure cavity.

6. A rope puller according to claim 1, characterized in that... A rotating shaft is provided at the center of the rotating part, and a baffle is provided inside the lower housing to surround the rotating part. A rotating hole is provided on the baffle, and the end of the rotating shaft is confined within the rotating hole.

7. A rope puller according to claim 4, characterized in that... The rotating part is provided with a helical gear, and helical teeth are arranged at intervals along the outer periphery of the helical gear. The cross-section of the helical teeth is a right trapezoid, and the locking teeth mesh with the helical teeth.

8. A rope puller according to claim 1, characterized in that... The pull rope is fixed to the rotating part of the one-way locking mechanism. When the pull rope is pulled or pulled, the pull rope drives the rotating part of the one-way locking mechanism to rotate.

9. A rope puller according to claim 1, characterized in that... When the button is near the outer end of the grip, the one-way locking mechanism is in the locked state, and the pull cord can only be pulled out in one direction. When the button is near the center of the grip, the one-way locking mechanism is in the unlocked state, and the pull cord can be pulled out or tightened.

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