One-way locking structure of handle
By combining a mounting base, a one-way ratchet, and an elastic element, the problem of the complexity and non-adjustable elastic force of traditional one-way locking structures is solved. This achieves one-way locking and stability adjustment of the handle, prevents misoperation, and features a simple structure and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RUYI JOINT CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-09
Smart Images
Figure CN224341826U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of handles, and specifically to a one-way locking structure for a handle. Background Technology
[0002] The handle locking structure is an indispensable safety component in mechanical control systems. It is widely used in various industrial equipment with handles. Its core function is to ensure that the handle can only rotate in one direction under normal conditions, preventing safety hazards caused by misoperation or accidental displacement of the handle.
[0003] Traditional one-way locking mechanisms often rely on the linkage of multiple components to achieve locking and unlocking. Their structure is relatively complex, and the operation steps for switching between the unlocking and locking states are cumbersome. Moreover, most locking mechanisms use fixed elastic elements to maintain engagement, but their elastic force cannot be dynamically adjusted. After long-term use, spring fatigue will occur, resulting in a decrease in locking force and even accidental tooth dislodgement. Furthermore, after the structure wears down, its locking stability is poor, which can easily cause the handle to wobble. Utility Model Content
[0004] This utility model addresses the aforementioned problems and aims to provide a one-way locking structure for a handle. By rotating the locking component, the locking and unlocking states can be switched. The structure is simple and easy to operate. Furthermore, by rotating the locking component, the compression of the elastic component can be adjusted to meet different elastic force requirements.
[0005] To achieve the above objectives, this utility model provides a one-way locking structure for a handle, comprising:
[0006] The mounting base has a first tooth with a unidirectional inclined tooth shape on one side;
[0007] A one-way ratchet is movably fixed at the bottom end of the handle, and a second tooth is provided on the side near the mounting base that meshes with the first tooth. The tooth shape of the second tooth matches that of the first tooth.
[0008] A locking element is inserted through the one-way ratchet and the mounting base, with its first end extending to the outside of the one-way ratchet and having an operating part, and its second end being threadedly connected to the mounting base.
[0009] An elastic element is sleeved on the locking element and pre-compressed between the first end of the locking element and the outer side of the one-way ratchet, wherein rotating the locking element can adjust the compression amount of the elastic element;
[0010] When the elastic element is in a compressed state, it can drive the second tooth to engage with the first tooth to achieve one-way locking of the handle;
[0011] When the locking member is rotated in the opposite direction to release the pressure on the elastic member, the second tooth unlocks from the first tooth.
[0012] According to the above-described one-way locking structure for a handle, the locking element is a pin, the second end of the pin is a threaded end, the mounting base is provided with a threaded hole that matches the threaded end, and the second end of the pin passes through the threaded hole.
[0013] According to the one-way locking structure of the handle described above, the second end of the pin extends to the outside of the mounting base and is provided with a limiting member, the diameter of which is larger than the diameter of the threaded hole.
[0014] According to the one-way locking structure of the handle described above, the limiting member is a limiting retaining ring, which is detachably sleeved on the end of the second end of the pin.
[0015] According to the one-way locking structure of the handle described above, a first mounting hole is provided on one side of the bottom end of the handle, and the one-way ratchet is movably engaged in the first mounting hole and can move toward or away from the mounting seat.
[0016] According to the one-way locking structure of the handle described above, the cross-section of the one-way ratchet and the first mounting hole is elliptical.
[0017] According to the above-described one-way locking structure of a handle, the one-way ratchet has a first side with a first tooth and a second side away from the first side, and a limiting plate is provided on the second side of the one-way ratchet, the diameter of the limiting plate being larger than the maximum diameter of the first mounting hole.
[0018] According to the above-described one-way locking structure of a handle, the elastic element is a spring, the spring is sleeved on the locking element, and one end of the spring abuts against the inner side of the operating part, and the other end of the spring abuts against the outer side of the limiting plate.
[0019] According to the one-way locking structure of the handle described above, the operating part is generally shaped like a plum blossom.
[0020] According to the one-way locking structure of the handle described above, the other side of the bottom end of the handle is rotatably connected to the other side of the mounting base via a pivot.
[0021] This utility model has the following beneficial effects:
[0022] 1. By rotating the locking component, the unlocking or locking states of the first tooth and the second tooth can be switched. In the locking state, since both the first tooth and the second tooth are inclined, the handle can only be rotated in one direction, which can prevent the risk of accidental operation. In the unlocking state, the handle can be reset. Its structure is simple and easy to operate.
[0023] 2. By adjusting the compression of the elastic element, the requirements for different elastic forces can be met. Since the elastic force can be adjusted in real time, the elastic element is not prone to failure.
[0024] 3. When wear occurs, the wear gap can be offset by further compressing the elastic element, ensuring the stability of the meshing between the first and second teeth. Attached Figure Description
[0025] Fig. 1 This is a schematic diagram of the overall structure of the embodiment;
[0026] Fig. 2 This is a schematic diagram of the assembly of the locking component and the mounting base in an embodiment;
[0027] Fig. 3 This is a schematic diagram of the one-way ratchet structure in an embodiment.
[0028] In the picture:
[0029] 100. Mounting base; 110. First tooth;
[0030] 200, One-way ratchet; 210, Second tooth; 220, Limiting plate;
[0031] 300, Pin; 310, Operating part; 320, Limiting ring;
[0032] 400. Spring;
[0033] 500, Handle. Detailed Implementation
[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0035] like Figs. 1-3 As shown, a one-way locking structure for a handle includes a mounting base 100, a one-way ratchet 200, a locking element, and an elastic element.
[0036] The mounting base 100 has a first tooth 110 with a unidirectional inclined tooth shape on one side. A one-way ratchet 200 is movably fixed to the bottom end of the handle 500, and a second tooth 210 that meshes with the first tooth 110 is provided on the side near the mounting base 100. The tooth shape of the second tooth 210 matches that of the first tooth 110. The shapes of the first tooth 110 and the second tooth 210 determine that when they are meshed, they can only rotate in one direction. Since the one-way ratchet 200 is fixed to the bottom end of the handle 500, its unidirectional rotation restricts the handle 500 to rotate in one direction only, which can effectively prevent the handle 500 from being operated accidentally. The locking member passes through the one-way ratchet 200 and the mounting base 100, and its first end extends to the outside of the one-way ratchet 200. An operating part 310 is provided, the second end of which is threadedly connected to the mounting base 100. The elastic element is sleeved on the locking element and pre-compressed between the first end of the locking element and the outer side of the one-way ratchet 200. When the locking element is rotated, since the second end of the locking element is threadedly connected to the mounting base 100, its rotation can drive the first end of the locking element to move away from or towards the one-way ratchet 200. This allows adjustment of the compression amount of the elastic element. By adjusting the compression amount of the elastic element, different elastic forces can be applied to the locking element, thereby achieving adjustment of the elastic locking force to meet different locking force requirements. Furthermore, when wear gaps occur, the locking force can be increased to ensure that the first tooth 110 and the second tooth 210 are engaged, improving the stability of one-way locking.
[0037] Specifically, based on the compression of the elastic element, its state can be divided into two types: one is when the compression is greater than 0, in a compressed state; the other is when the compression is 0, in a released state. When the elastic element is in a compressed state, it provides an elastic force acting on the one-way ratchet 200, which drives the second tooth 210 to maintain engagement with the first tooth 110, thereby achieving one-way locking of the handle 500. When the locking element is rotated in the opposite direction to release the pressure of the elastic element, the elastic element is in a released state. In the current state, the second tooth 210 is unlocked from the first tooth 110. Taking the normal state where the handle 500 can only rotate counterclockwise as an example, after the second tooth 210 is unlocked from the first tooth 110, when the handle 500 is rotated clockwise, the handle 500 drives the second tooth 210 to rotate clockwise synchronously. The second tooth 210 and the first tooth 110 abut against each other. Since it is unlocked, the second tooth 210 can move away from the first tooth 110 until the second tooth 210 and the first tooth 110 disengage from each other. At this time, the handle 500 can rotate clockwise normally.
[0038] In this embodiment, two opposing support plates are provided on the top of the mounting base 100. The first tooth 110 is installed on the outer side of one of the support plates. One side of the bottom end of the handle 500 is hinged to the support plate on which the first tooth 110 is installed via a one-way ratchet 200, a locking element, and an elastic element. The other side of the bottom end of the handle 500 is rotatably connected to the other side of the mounting base 100 via a pivot, that is, hinged to the other support plate, to ensure the stability of the rotation of the handle 500.
[0039] In this embodiment, the meshing surface angle between the first tooth 110 and the second tooth 210 is 45°–60°, and the separation surface is a vertical plane. When the handle 500 is rotated, the meshing surface between the first tooth 110 and the second tooth 210 will decompose the force, thereby pushing the one-way ratchet 200 to move away from the mounting base 100.
[0040] Furthermore, the locking component is configured as a pin 300, with the second end of the pin 300 being a threaded end. The mounting base 100 is provided with a threaded hole that matches the threaded end. The second end of the pin 300 passes through the threaded hole, and the first end of the pin 300 is configured as a smooth shaft, which is clearance-fitted with the one-way ratchet 200 to enable it to move freely within the one-way ratchet 200. When the position of the locking component needs to be adjusted, it is only necessary to rotate the locking component. The threaded end is connected to the mounting base 100 to drive it to move. The specific direction of movement can be controlled by rotating it forward or backward.
[0041] Furthermore, to prevent the pin 300 from detaching from the mounting base 100, the second end of the pin 300 extends to the outside of the mounting base 100 and is provided with a limiting member. The diameter of the limiting member is larger than the diameter of the threaded hole. When the first end of the pin 300 moves away from the mounting base 100, it can move until the limiting member abuts against the outside of the mounting base 100. At this time, the pin 300 cannot continue to move, thus preventing the pin 300 from detaching from the mounting base 100.
[0042] Furthermore, to facilitate the assembly and disassembly of the pin 300, the limiting component is a limiting retaining ring 320. The limiting retaining ring 320 is detachably sleeved on the end of the second end of the pin 300. During assembly, the second end of the pin 300 can be inserted into the outside of the mounting base 100 first, and then the limiting retaining ring 320 can be installed. During disassembly, the limiting retaining ring 320 can be removed first, and then the second end of the pin 300 can be pulled out, which facilitates the assembly, disassembly and maintenance of the pin 300.
[0043] Furthermore, a first mounting hole is provided on one side of the bottom end of the handle 500. The one-way ratchet 200 is movably locked in the first mounting hole and can move towards or away from the mounting base 100. It is required that the one-way ratchet 200 rotate synchronously with the handle 500. When the second tooth 210 on the one-way ratchet 200 engages with the first tooth 110 on the mounting base 100 to lock in one direction, the handle 500 cannot rotate independently relative to the one-way ratchet 200, thus achieving one-way locking of the handle 500. At the same time, it is also necessary to ensure that the one-way ratchet 200 can move horizontally relative to the handle 500, so as to move towards or away from the mounting base 100 and adjust the compression of the elastic element.
[0044] Furthermore, in order to achieve the above objectives, the cross-sections of the one-way ratchet 200 and the first mounting hole are elliptical. The elliptical shape prevents them from rotating independently, allowing them to rotate synchronously and achieve independent horizontal displacement.
[0045] Of course, in addition to the above solutions, a guide groove arranged in a horizontal direction can be provided on the inner wall of the first mounting hole, and a guide block is provided on the outer wall of the one-way ratchet 200. The guide block inserted in the guide groove can also achieve locking in the rotation direction, while also being able to move horizontally, which should not exceed the scope of this application.
[0046] Furthermore, to prevent the one-way ratchet 200 from disengaging from the handle 500, the one-way ratchet 200 has a first side with a first tooth 110 and a second side away from the first side. A limiting plate 220 is provided on the second side of the one-way ratchet 200. The diameter of the limiting plate 220 is larger than the maximum diameter of the first mounting hole. The limiting plate 220 can restrict the one-way ratchet 200 from disengaging from the handle 500 when it moves towards the side closer to the mounting base 100. Its closest position is when the limiting plate 220 abuts against the bottom end of the handle 500. Of course, when the one-way ratchet 200 moves towards the side away from the mounting base 100, after it has moved a certain distance, the one-way ratchet 200 will abut against the released elastic element again, thereby enabling the one-way ratchet 200 to continue moving and preventing the one-way ratchet 200 from disengaging from the mounting base 100 in that direction.
[0047] Furthermore, the elastic element is a spring 400, which is sleeved on the locking element. One end of the spring 400 abuts against the inner side of the operating part 310, and the other end of the spring 400 abuts against the outer side of the limiting plate 220. The spring 400 provides elastic force to the one-way ratchet 200, so that it can be kept in an elastically locked state.
[0048] Furthermore, to facilitate operation, the operating part 310 is shaped like a plum blossom, making it easier to hold and easier to drive the locking member to rotate.
[0049] In this embodiment, a one-way locking structure for a handle is disclosed, including a mounting base 100, a one-way ratchet 200, a locking element, and an elastic element. One side of the mounting base 100 is provided with a first tooth 110 having a one-way inclined tooth shape. The one-way ratchet 200 is movably fixed to the bottom end of the handle 500, and a second tooth 210 is provided on the side near the mounting base 100 that meshes with the first tooth 110. The tooth shape of the second tooth 210 matches that of the first tooth 110. The locking element passes through the one-way ratchet 200 and the mounting base 100. On the mounting base 100, its first end extends to the outside of the one-way ratchet 200 and is provided with an operating part 310. Its second end is threadedly connected to the mounting base 100. The elastic element is sleeved on the locking element and pre-compressed between the first end of the locking element and the outside of the one-way ratchet 200. Rotating the locking element can adjust the compression amount of the elastic element to meet the needs of different locking forces. At the same time, by adjusting the compression amount of the elastic element, one-way locking and unlocking of the handle 500 can be achieved. Its structure is simple and easy to operate.
[0050] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0051] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0052] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0054] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A one-way locking structure for a handle, characterized in that, include: The mounting base has a first tooth with a unidirectional inclined tooth shape on one side; A one-way ratchet is movably fixed at the bottom end of the handle, and a second tooth is provided on the side near the mounting base that meshes with the first tooth. The tooth shape of the second tooth matches that of the first tooth. A locking element is inserted through the one-way ratchet and the mounting base, with its first end extending to the outside of the one-way ratchet and having an operating part, and its second end being threadedly connected to the mounting base. An elastic element is sleeved on the locking element and pre-compressed between the first end of the locking element and the outer side of the one-way ratchet, wherein rotating the locking element can adjust the compression amount of the elastic element; When the elastic element is in a compressed state, it can drive the second tooth to engage with the first tooth to achieve one-way locking of the handle; When the locking member is rotated in the opposite direction to release the pressure on the elastic member, the second tooth unlocks from the first tooth.
2. The one-way locking structure of a handle according to claim 1, characterized in that, The locking element is a pin, the second end of the pin is a threaded end, the mounting base is provided with a threaded hole that matches the threaded end, and the second end of the pin passes through the threaded hole.
3. The one-way locking structure of a handle according to claim 2, characterized in that, The second end of the pin extends to the outside of the mounting base and is provided with a limiting member, the diameter of which is larger than the diameter of the threaded hole.
4. The one-way locking structure of a handle according to claim 3, characterized in that, The limiting component is a limiting retaining ring, which is detachably sleeved on the end of the second end of the pin.
5. The one-way locking structure of a handle according to claim 1, characterized in that, A first mounting hole is provided on one side of the bottom end of the handle. The one-way ratchet is movably engaged in the first mounting hole and can move toward or away from the mounting seat.
6. The one-way locking structure of a handle according to claim 5, characterized in that, The cross-section of the one-way ratchet and the first mounting hole is elliptical.
7. The one-way locking structure for a handle according to claim 5, characterized in that, The one-way ratchet has a first side with a first tooth and a second side away from the first side. A limiting plate is provided on the second side of the one-way ratchet, and the diameter of the limiting plate is greater than the maximum diameter of the first mounting hole.
8. The one-way locking structure of a handle according to claim 7, characterized in that, The elastic element is a spring, which is sleeved on the locking element. One end of the spring abuts against the inner side of the operating part, and the other end of the spring abuts against the outer side of the limiting plate.
9. A one-way locking structure for a handle according to claim 1 or 8, characterized in that, The operating part is shaped like a plum blossom.
10. The one-way locking structure of a handle according to claim 1, characterized in that, The other side of the bottom end of the handle is rotatably connected to the other side of the mounting base via a pivot.