Hand puller

Abstract

The utility model provides a hand puller which comprises a handle part, a fixing part, a rotating shaft and ratchet wheels, one end of the fixing part sleeves the rotating shaft, one end of the handle part is arranged at the two ends of the rotating shaft, the ratchet wheels are arranged on the rotating shaft and located between the handle part and the fixing part, the handle part comprises a handle, connecting frames and a driving piece, and the two ends of the handle are installed at one ends of the two connecting frames respectively; the handle can drive the connecting frames to rotate around the rotating shaft, the connecting frames drive the ratchet wheel through the driving piece so as to drive the rotating shaft to rotate, the connecting frames are provided with first mounting holes corresponding to the rotating shaft, and the outer side faces, corresponding to the first mounting holes, of the connecting frames are provided with limiting parts. The limiting part is used for limiting the rotating shaft from separating from the connecting frame. By arranging the limiting part on the connecting frame, the moving range of the connecting frame on the rotating shaft can be effectively limited, and the connecting frame is prevented from being separated. Performance problems caused by loosening, abrasion and the like can be effectively avoided.

Description

Technical Field

[0001] The present application relates to the field of hand pullers, and in particular to a hand puller. Background Art

[0002] The pull-out hand puller is a commonly used binding auxiliary device. At present, the reel of the hand puller used in logistics transportation is installed with a movable belt positioned at one end. By driving the ratchet to drive the reel to rotate, the movable belt can be extended or shortened to achieve binding. When the movable belt is extended, the ratchet is released, and the movable belt drives the reel to rotate in the opposite direction under the action of tension, achieving quick loosening.

[0003] The prior art discloses a pull-out hand puller with a quick-release rotating shaft, whose publication number is CN116443319A and whose publication date is 2023-07-18. It discloses a pull-out hand puller, including a handle device and a rotating shaft, the rotating shaft including two semi-lunar shafts, the rotating shaft passing through the handle device, one end of one of the semi-lunar shafts is restricted in the handle device, and the other end is provided with two symmetrical card slots along the long axis of the semi-lunar shaft, and the tip is located on the outside of the handle device; the other semi-lunar shaft is provided with an elastic member that is engaged with the card slot.

[0004] The invention patent is disclosed in the specification that pins are provided at both ends of the semi-lunar shaft without elastic parts, so that the semi-lunar shaft without elastic parts is more stable. Therefore, the two ends of the semi-lunar shaft of the hand puller are fixed by pins and handles. However, the use of pins for fixing has the following disadvantages:

[0005] 1. Easy to loosen: Pin fixation is a relatively simple fixing method, but it is easy to loosen when subjected to external force or vibration. If the pin is loose, the half-moon shaft may move or rotate, causing the hand puller to fail to work properly.

[0006] 2. Easy to wear: The contact surface between the pin and the half-moon shaft is easy to wear. As the use time increases, the pin may wear or deform, resulting in a weakened fixing effect.

[0007] 3. Instability: If the pin is loose or badly worn, it may cause the half-moon shaft to be unstable. This may cause the hand puller to malfunction during use or affect its performance. Utility Model Content

[0008] The purpose of this application is to provide a hand puller that is stronger and more stable.

[0009] In order to achieve the above objectives, this application provides the following technical solutions:

[0010] A hand puller comprises a handle part, a fixing part, a rotating shaft and a ratchet, wherein one end of the fixing part is sleeved on the rotating shaft, one end of the handle part is arranged at two ends of the rotating shaft, the ratchet is arranged on the rotating shaft and is located between the handle part and the fixing part, the handle part can drive the ratchet to drive the rotating shaft to rotate, the handle part comprises a handle, a connecting frame and a driving member, the two ends of the handle are respectively mounted on one end of the two connecting frames, the other ends of the two connecting frames are mounted on the rotating shaft, the driving member is arranged between the two connecting frames, the driving member cooperates with the insert teeth of the ratchet, the handle can drive the connecting frame to rotate around the rotating shaft, the connecting frame drives the ratchet through the driving member to drive the rotating shaft to rotate, the connecting frame is provided with a first mounting hole corresponding to the rotating shaft, and the outer side surface of the connecting frame corresponding to the first mounting hole is provided with a limiting portion, and the limiting portion is used to limit the rotating shaft from separating from the connecting frame.

[0011] The present application can effectively limit the movement range of the connecting frame on the rotating shaft by setting a limiter on the connecting frame to prevent it from detaching. This design provides a more reliable and stable fixing method, and more effectively avoids performance problems caused by looseness, wear, etc. compared to the traditional pin fixing method.

[0012] Furthermore, the limiting part is formed by protruding outward from the outer surface of the connecting frame, and the limiting part has a first installation groove, and the end of the rotating shaft is arranged in the first installation groove, and the rotating shaft is loosely matched with the first installation groove. The limiting part is integrally formed and protrudes from the connecting frame, and has a first installation groove, and the end of the rotating shaft is arranged in this groove. Since the limiting part is integrally formed, it means that the integration of the structure can be more easily achieved during the manufacturing process, thereby reducing the connection points between the components and simplifying the manufacturing and assembly processes.

[0013] Furthermore, a first through hole is provided at the end of the first mounting groove.

[0014] Furthermore, a first blocking piece is arranged in the first installation groove.

[0015] Furthermore, the limiting part is formed by the rubber coating on the outer side of the connecting frame protruding outward, and the limiting part has a second installation groove, the end of the rotating shaft is arranged in the second installation groove, and the rotating shaft is loosely matched with the second installation groove. The existence of the rubber coating may provide additional shock absorption and buffering effects, reduce the impact force of the connecting component when it is subjected to external impact or vibration, and help protect the structure and components of the hand puller.

[0016] In addition to limiting the movement of the rotating shaft, the limiting portion of the present application also has the effects of shock absorption, buffering and improving comfort.

[0017] Furthermore, a second through hole is provided at the end of the second mounting groove. By providing the second through hole, the injection molding material at this location can be better cooled. The cooling effect is crucial to ensure the quality and stability of injection molding. Sufficient cooling helps to slow down the flow of the injection molding material and prevent problems that may cause uneven shrinkage or deformation.

[0018] Furthermore, a second blocking piece is arranged in the second installation slot, and the existence of the second blocking piece limits the movement range of the rotating shaft in the second installation slot, ensuring that the rotating shaft moves within a set position.

[0019] Furthermore, the rubber coating on the inner side surfaces of the two connecting frames protrudes inward to form a reinforcement portion, and the two reinforcement portions are butted against each other and locked and fixed against each other by a first fastener. The two reinforcement portions butt against each other to form a stronger structural connection, which helps to improve the overall strength of the connecting frame. This design can withstand greater forces and pressures during use, and reduces the risk of deformation or damage of components due to external impact or load.

[0020] Furthermore, a third mounting groove is provided on the side of the reinforcement part away from the rotating shaft, and an inlay block is provided in the third mounting groove. The provision of the third mounting groove and the inlay block may provide additional structural strength, especially on the side of the reinforcement part away from the rotating shaft. This helps to improve the overall stability and strength of the connecting frame when subjected to external forces or loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a hand puller provided in one embodiment of the present application;

[0022] Figure 2 A schematic diagram of the exploded structure of a hand puller provided in one embodiment of the present application;

[0023] Figure 3 A top view of a hand puller provided in one embodiment of the present application;

[0024] Figure 4 for Figure 3 Section view at AA.

[0025] Description of reference numerals:

[0026] 1. Handle; 2. Fixed part; 3. Rotating shaft; 4. Ratchet;

[0027] 11. handle; 12. connecting frame; 13. driving member; 14. limiting part; 15. reinforcing part; 16. first fastening member; 17. inlay block;

[0028] 121. first mounting hole;

[0029] 141, rubber layer; 142, second mounting groove; 143, second through hole; 144, second baffle;

[0030] 151, third mounting slot; DETAILED DESCRIPTION

[0031] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, a hand puller comprises a handle portion 1, a fixing portion 2, a rotating shaft 3 and a ratchet 4, wherein one end of the fixing portion 2 is sleeved on the rotating shaft 3, one end of the handle portion 1 is arranged at both ends of the rotating shaft 3, the ratchet 4 is arranged on the rotating shaft 3 and is located between the handle portion 1 and the fixing portion 2, the handle portion 1 can drive the ratchet 4 to drive the rotating shaft 3 to rotate, the handle portion 1 comprises a handle 11, a connecting frame 12 and a driving member 13, the two ends of the handle are respectively mounted on one end of the two connecting frames 12, the other ends of the two connecting frames 12 are mounted on the rotating shaft 3, and the driving member 13 is arranged on the rotating shaft 3. The movable member 13 is arranged between the two connecting frames 12. The driving member 13 cooperates with the teeth of the ratchet 4. The handle can drive the connecting frame 12 to rotate around the rotating shaft 3. The connecting frame 12 drives the ratchet 4 through the driving member 13 to drive the rotating shaft 3 to rotate, so that the binding belt on the rotating shaft 3 is wound or unwound. The connecting frame 12 is provided with a first mounting hole 121 corresponding to the rotating shaft 3. The outer side surface of the connecting frame 12 corresponding to the first mounting hole 121 is provided with a limiting portion 14, and the limiting portion 14 is used to limit the rotating shaft 3 from being separated from the connecting frame 12.

[0033] The present application can effectively limit the movement range of the connecting frame 12 on the rotating shaft 3 and prevent it from detaching by setting the limiting part 14 on the connecting frame 12. This design provides a more reliable and stable fixing method, and more effectively avoids performance problems caused by looseness, wear and the like compared to the traditional pin fixing method.

[0034] like Figure 4 As shown, in this embodiment, the limiting portion 14 is formed by the rubber coating 141 on the outer side of the connecting frame 12 protruding outward, and the limiting portion 14 has a second mounting groove 142, and the end of the rotating shaft 3 is arranged in the second mounting groove 142, and the rotating shaft 3 is loosely matched with the second mounting groove 142. The existence of the rubber coating 141 may provide additional shock absorption and buffering effects, reduce the impact force when the connecting component is subjected to external impact or vibration, and help protect the structure and components of the hand puller.

[0035] In addition to limiting the movement of the rotating shaft 3, the limiting portion 14 of the present application also has the effects of shock absorption, buffering and improving comfort.

[0036] The clearance fit between the rotating shaft 3 and the second mounting groove 142 is used to realize the movable connection between the shaft and the hole, thereby ensuring the stability and reliability of the system, and also improving the service life and reliability of the entire system.

[0037] like Figure 4 As shown, in this embodiment, a second through hole 143 is provided at the end of the second mounting groove 142. By providing the second through hole 143, the injection molding material at this location can be better cooled. The cooling effect is crucial to ensure the quality and stability of injection molding. Sufficient cooling helps to slow down the flow of the injection molding material and prevent problems that may cause uneven shrinkage or deformation.

[0038] Since the material injected here is relatively thick, sufficient cooling is critical to ensure that the rubber coating 141 is strong and not easily damaged. The design of the second through hole 143 can effectively control the temperature of the injection material, which helps to form a strong and stable rubber coating 141.

[0039] The second through holes 143 also help prevent the rubber coating 141 from deforming due to thermal expansion and contraction, etc. By better cooling, the change in shape of the rubber coating 141 caused by temperature changes can be reduced.

[0040] like Figure 4 As shown, in this embodiment, a second blocking piece 144 is disposed in the second installation slot 142. The second blocking piece 144 limits the movement range of the rotating shaft 3 in the second installation slot 142, ensuring that the rotating shaft 3 moves within a set position.

[0041] In this embodiment, the rubber coating 141 on the inner side of the two connecting frames 12 protrudes inward to form a reinforcement part 15, and the two reinforcement parts 15 are butted against each other and locked and fixed to each other by the first fastener 16. The two reinforcement parts 15 are butted against each other to form a stronger structural connection, which helps to improve the overall strength of the connecting frame 12. This design can withstand greater force and pressure during use, reducing the risk of deformation or damage of parts due to external impact or load.

[0042] like Figure 2 As shown, in this embodiment, a third mounting groove 151 is provided on a side of the reinforcing portion 15 away from the rotating shaft 3, and an inlay block 17 is provided in the third mounting groove 151. The provision of the third mounting groove 151 and the inlay block 17 may provide additional structural strength, especially on a side of the reinforcing portion 15 away from the rotating shaft 3. This helps to improve the overall stability and strength of the connecting frame 12 when subjected to external forces or loads.

[0043] In this embodiment, the limiting portion 14 is formed by protruding outward from the outer surface of the connecting frame 12, and the limiting portion 14 has a first installation groove, and the end of the rotating shaft 3 is arranged in the first installation groove, and the rotating shaft 3 is loosely matched with the first installation groove. The limiting portion 14 is integrally formed and protrudes from the connecting frame 12, has a first installation groove, and the end of the rotating shaft 3 is arranged in this groove. Since the limiting portion 14 is integrally formed, it means that it is easier to achieve structural integration during the manufacturing process, thereby reducing the connection points between components and simplifying the manufacturing and assembly processes.

[0044] In this embodiment, a first through hole is provided at the end of the first mounting groove.

[0045] In this embodiment, a first blocking piece is disposed in the first installation groove.

[0046] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0047] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0048] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or devices.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hand puller, comprising a handle, a fixing part, a rotating shaft and a ratchet, wherein one end of the fixing part is sleeved on the rotating shaft, one end of the handle is arranged at both ends of the rotating shaft, the ratchet is arranged on the rotating shaft and located between the handle and the fixing part, and the handle can drive the ratchet to drive the rotating shaft to rotate, characterized in that: The handle part includes a handle, a connecting frame and a driving member, two ends of the handle are respectively mounted on one end of the two connecting frames, the other ends of the two connecting frames are mounted on the rotating shaft, the driving member is arranged between the two connecting frames, the driving member cooperates with the teeth of the ratchet, the handle can drive the connecting frame to rotate around the rotating shaft, the connecting frame drives the ratchet through the driving member to drive the rotating shaft to rotate, the connecting frame is provided with a first mounting hole corresponding to the rotating shaft, and a limiting portion is provided on the outer side of the connecting frame corresponding to the first mounting hole, and the limiting portion is used to limit the rotating shaft from detaching from the connecting frame.

2. A hand puller according to claim 1, characterized in that: The limiting portion is formed by protruding outward from the outer surface of the connecting frame, and the limiting portion has a first mounting groove. The end of the rotating shaft is arranged in the first mounting groove, and the rotating shaft is clearance-matched with the first mounting groove.

3. A hand puller according to claim 2, characterized in that: A first through hole is disposed at the end of the first mounting groove.

4. A hand puller according to claim 2, characterized in that: A first blocking piece is arranged in the first installation groove.

5. The hand puller according to claim 1, characterized in that: The limiting portion is formed by the rubber layer on the outer side of the connecting frame protruding outward, and the limiting portion has a second mounting groove, the end of the rotating shaft is arranged in the second mounting groove, and the rotating shaft is clearance-matched with the second mounting groove.

6. A hand puller according to claim 5, characterized in that: A second through hole is disposed at the end of the second mounting groove.

7. A hand puller according to claim 5, characterized in that: A second blocking piece is arranged in the second installation groove.

8. The hand puller according to claim 1, characterized in that: The rubber coatings on the inner side surfaces of the two connecting frames protrude inwardly to form a reinforcement portion, and the two reinforcement portions are butted against each other and are locked and fixed to each other by a first fastener.

9. A hand puller according to claim 8, characterized in that: A third installation groove is arranged on one side of the reinforcement portion away from the rotating shaft, and an inlay block is arranged in the third installation groove.

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