Anti-disengagement structure and method of locking hand wheel

Abstract

This invention relates to the field of handwheel anti-detachment structure technology, specifically to an anti-detachment structure and method for locking handwheels, including a guide rod, a transmission sleeve, and a handwheel assembly. The handwheel assembly has a handle, a gear and rack transmission mechanism, and the rotation of the handle drives the connecting plate and the push rod to achieve quick engagement of the handwheel. A unique feature is the foldable and telescopic design of the handle, which, through a storage slot and a snap-on notch, makes the handwheel assembly compact and easy to carry. The anti-detachment mechanism includes a straight groove, a cross slide, and a compression bevel, effectively preventing rack dislocation and improving stability during use. For disassembly, the design of the pull ring and compression spring makes operation simpler. The special design of the storage sleeve not only achieves anti-detachment and quick installation but also allows for easy adaptation to various usage environments. This invention's handwheel structure is ingenious, convenient, stable, and portable, suitable for various mechanical equipment and tools, improving operational efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of anti-disengagement structure technology for handwheels, and particularly to an anti-disengagement structure and method for locking handwheels. Background Technology

[0002] A handwheel is a manually operated rotary device, typically consisting of a circular wheel and a handle attached to it. Handwheels are widely used in various mechanical equipment and tools. Their main function is to adjust, control, or operate mechanical systems through manual rotation. The intuitive design of the handwheel allows the operator to easily control the mechanical device through hand rotation. This device is commonly found in machine tools, workbenches, lathes, manually operated valves, and adjusting instruments. Handwheels are usually designed with an easy-to-grip shape, allowing the operator to easily rotate them while providing sufficient feel and precision. The size, shape, and purpose of the handwheel can vary depending on specific application requirements. Some handwheels also have scales or markings so that the operator can accurately understand the rotational position or achieve precise adjustments. The handwheel is a simple and effective manual control tool in many fields.

[0003] Chinese patent application CN115523241A discloses a thrust ring with a top pin anti-detachment mechanism, comprising a thrust ring body. One side of the thrust ring body has a slot for inserting the end of a top pin, and the other side has an arc-shaped protrusion for abutting against the side wall of a connector. The top pin anti-detachment mechanism includes an elastic element that is sleeved on the outside of the top pin. One end of the elastic element is fixed to the side wall of the thrust ring body and covers the slot opening, preventing it from detaching from the limiting ring body and reducing the risk of failure in the manual / automatic switching structure. However, this structure is complex, and the elastic element is easily damaged. Therefore, a highly reliable, compact, easy-to-operate, and safe anti-detachment structure is designed. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a locking handwheel anti-disengagement structure and method to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides a locking handwheel anti-disengagement structure and method.

[0006] A locking handwheel anti-disengagement structure and method includes a guide rod, a transmission sleeve fixedly inserted inside the guide rod, and a handwheel assembly for driving the guide rod to rotate slidably inserted inside the transmission sleeve. The handwheel assembly includes a insertion tube slidably inserted inside the transmission sleeve, a storage sleeve sleeved on the outer circumferential surface of the insertion tube, and multiple handles equidistantly arranged in a circular array on the outer circumferential surface of the storage sleeve. Each handle has a rotating rod inserted at its lower part, and each rotating rod rotatably passes through the storage sleeve. Multiple telescopic rods are equidistantly slidably inserted on the outer circumferential surface of the insertion tube located inside the transmission sleeve, and each telescopic rod is slidably inserted inside the transmission sleeve. The outer circumferential surface of the transmission sleeve is provided with multiple straight slots arranged in a circumferential array at equal intervals. The telescopic rods are slidably inserted into the straight slots. The outer circumferential surface of the rotating rod is fitted with a gear. The gears are laterally meshed with racks at the ends near the center of the insertion tube. The racks are provided with the same connecting plate at the ends near the telescopic rods. The connecting plate is slidably inserted into the inner wall of the insertion tube. The connecting plate is laterally coaxially provided with a top rod. The top rod is coaxially provided with a cone at the end near the telescopic rod. The bottom end of the telescopic rod is provided with a wedge. The wedge is provided with an abutting slope at the side near the cone. The abutting slope slides against the outer circumferential surface of the cone.

[0007] The above technical solution allows the handle to rotate, which in turn drives the gear to rotate. The rotation of the gear drives the connecting plate to move through the rack, and then drives the push rod to move. This causes the cone to apply pressure to the wedge simultaneously. The wedge, under pressure, causes the telescopic rod to extend out of the insertion tube and enter the straight groove, allowing for quick engagement. This enables rapid installation, is easy to use, has a simple structure, is highly reliable, convenient to operate, and has excellent safety.

[0008] Furthermore, the outer circumferential surfaces of the storage sleeve and the insertion tube are provided with multiple storage slots arranged in an equidistant circular array, and the grips are slidably inserted into the storage slots respectively.

[0009] The above technical solution utilizes a foldable and retractable handle in conjunction with a storage slot to significantly reduce the size of the handwheel assembly, making it easy to store and carry.

[0010] Furthermore, the rack is provided with the same cross slide at the end away from the connecting plate. The cross slide is slidably inserted into the inner wall of the insertion tube. Slide grooves are provided at the intersection of the inner wall of the insertion tube and the cross slide.

[0011] The above technical solution utilizes the cross carriage and the slide groove to prevent the rack from dislodging during transmission, thus playing a guiding role and effectively improving the stability of use.

[0012] Furthermore, a cover plate is provided at the end of the insertion tube away from the guide rod, and the cross slide and the inner wall of the cover plate are provided with the same tension spring laterally.

[0013] The above technical solution utilizes a tension spring and a cover plate to ensure that the cross carriage always receives a rebound force.

[0014] Furthermore, a top spring is fitted on the telescopic rod near the position between the inner wall of the insertion tube and the wedge block.

[0015] The above technical solution utilizes a top spring to allow the telescopic rod to automatically and quickly separate from the straight slot during storage, effectively improving disassembly efficiency.

[0016] Furthermore, symmetrically sliding locking blocks are inserted at both ends of the insertion tube, and each locking block is provided with a pull rod in the horizontal direction. A sleeve is slidably fitted on the outer circumference of the pull rod, and each sleeve is fixed to the outer wall of the insertion tube. A compression spring is fitted on each pull rod near the position between the locking block and the inner wall of the sleeve. Each end of the cross slide is provided with a pressing slope, and the pressing slope slides against the slope of the locking block.

[0017] The above technical solution utilizes the combination of a pressing bevel and a locking block. During the installation of the handwheel assembly, the pressing bevel and the locking block abut against each other, causing the locking block to automatically enter the insertion tube. When the pressing bevel and the locking block separate, the compression spring causes the locking block to automatically reset, causing the cross slide to experience reverse resistance, thereby fixing the handle. When the handwheel assembly is rotated, the handle will not become misaligned regardless of the operation, greatly improving safety and stability.

[0018] Furthermore, pull rings are provided at the ends of the pull rods.

[0019] The above technical solution utilizes pull rings to facilitate quick and manual disassembly.

[0020] Furthermore, the storage sleeve has snap-on notches on both sides near the edge of the storage slot.

[0021] The above technical solution allows for quick and easy removal of the grip from the storage slot using the snap-on notch, improving ease of use.

[0022] Furthermore, the diameter of the straight groove is larger than the diameter of the telescopic rod.

[0023] The above technical solution allows for the extension and retraction of the telescopic rod, as its diameter is smaller than that of the straight groove, thus effectively improving ease of use and stability.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention features a foldable and retractable handle designed with a handwheel assembly. A gear and rack transmission mechanism enables quick engagement of the handwheel. This not only improves the device's operational efficiency but also allows the handwheel to be quickly installed on the equipment when needed, saving time and labor.

[0026] 2. This invention effectively prevents the rack from detaching during use by employing anti-detachment mechanisms such as straight grooves, cross slides, and compression bevels. This improves the stability of the handwheel, making it more reliable during operation, reducing problems caused by detachment, and enhancing the safety of the equipment.

[0027] 3. This invention utilizes a foldable and retractable handle design, combined with a storage slot and a snap-on notch, to make the handwheel assembly compact and portable. This makes the handwheel easy to carry and suitable for various working environments and scenarios. Simultaneously, the storage sleeve design increases the handwheel's flexibility and adaptability, making it easier to use with different devices. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0030] Figure 2 This is a side cross-sectional view of an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the connection between the transmission sleeve and the insertion tube according to an embodiment of the present invention;

[0032] Figure 4 Embodiments of the present invention Figure 2 A magnified schematic diagram of the structure at point A;

[0033] Figure 5 This is a schematic diagram of the connection structure between the cone and the wedge block according to an embodiment of the present invention;

[0034] Figure 6 Embodiments of the present invention Figure 5 A magnified schematic diagram of the structure at point B;

[0035] Figure 7 This is a schematic diagram of the cross carriage installation structure according to an embodiment of the present invention;

[0036] Figure 8 Embodiments of the present invention Figure 7 A magnified schematic diagram of the structure at point C.

[0037] The diagram is marked as follows:

[0038] 1. Guide rod; 2. Transmission sleeve; 201. Straight groove; 3. Handwheel assembly; 301. Insert pipe; 3011. Storage slot; 302. Storage sleeve; 3021. Snap-on notch; 303. Rotating rod; 304. Handle; 305. Cover plate; 4. Gear; 5. Rack; 6. Connecting plate; 7. Top rod; 8. Cone; 9. Wedge block; 91. Abutting slope; 10. Telescopic rod; 11. Top spring; 12. Cross slide; 1201. Extrusion slope; 13. Slide groove; 14. Tension spring; 15. Snap-fit ​​block; 16. Pull rod; 17. Compression spring; 18. Sleeve; 19. Pull ring. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] like Figures 1 to 8As shown, a locking handwheel anti-disengagement structure and method includes a guide rod 1, a transmission sleeve 2 fixedly inserted inside the guide rod 1, and a handwheel assembly 3 for driving the guide rod 1 to rotate slidably inserted inside the transmission sleeve 2. The handwheel assembly 3 includes a insertion tube 301 slidably inserted inside the transmission sleeve 2, a storage sleeve 302 sleeved on the outer circumferential surface of the insertion tube 301, and multiple handles 304 inserted in a equidistant circular array on the outer circumferential surface of the storage sleeve 302. A rotating rod 303 is inserted into the lower part of each handle 304, and the rotating rod 303 rotatably passes through the storage sleeve 302. Multiple telescopic rods 10 are slidably inserted in a equidistant circular array on the outer circumferential surface of the insertion tube 301 located inside the transmission sleeve 2. The telescopic rods 10 are slidably inserted inside the transmission sleeve 2. Multiple straight slots 201 are opened in a equidistant circular array on the outer circumferential surface of the transmission sleeve 2, and the telescopic rods 10 are slidably inserted into the straight slots 201 respectively. A gear 4 is sleeved on the outer circumferential surface of the rotating rod 303. The gear 4 is close to... One end of the insertion tube 301 is laterally engaged with a rack 5. The rack 5 is provided with a connecting plate 6 near the end of the telescopic rod 10. The connecting plate 6 is slidably inserted into the inner wall of the insertion tube 301. The connecting plate 6 is provided with a push rod 7 laterally and coaxially. The push rod 7 is provided with a cone 8 coaxially near the end of the telescopic rod 10. The bottom end of the telescopic rod 10 is provided with a wedge 9. The wedge 9 is provided with an abutting slope 91 on the side near the cone 8. The abutting slope 91 slides against the outer circumference of the cone 8. When the handle 304 is rotated, it can drive the gear 4 to rotate. When the gear 4 rotates, it drives the connecting plate 6 to move through the rack 5, and drives the push rod 7 to move. This causes the cone 8 to apply pressure to the wedge 9 at the same time. The wedge 9 is pressed and causes the telescopic rod 10 to extend out of the insertion tube 301 and enter the straight groove 201, which can be quickly snapped together, thereby achieving rapid installation. It is easy to use and has a simple structure, high reliability, convenient operation and excellent safety.

[0042] For details, please refer to Figure 1 as well as Figure 5 The storage sleeve 302 and the insertion tube 301 are provided with multiple storage slots 3011 arranged in an equidistant circular array on their outer circumferential surfaces. The handles 304 are slidably inserted into the storage slots 3011. By using the foldable and telescopic handles 304 in conjunction with the storage slots 3011, the volume of the handwheel assembly 3 can be greatly reduced, making it easy to store and carry.

[0043] For details, please refer to Figure 5 as well as Figure 7 The rack 5 is provided with a cross slide 12 at the end away from the connecting plate 6. The cross slide 12 is slidably inserted into the inner wall of the insertion tube 301. Slide grooves 13 are provided at the intersection of the inner wall of the insertion tube 301 and the cross slide 12. By using the cooperation between the cross slide 12 and the slide grooves 13, the rack 5 can be prevented from dislodging during transmission, playing a guiding role and effectively improving the stability of use.

[0044] For details, please refer to Figure 2The end of the insertion tube 301 away from the guide rod 1 is provided with a cover plate 305. The cross slide 12 and the inner wall of the cover plate 305 are provided with the same tension spring 14. By using the tension spring 14 and the cover plate 305, the cross slide 12 can always obtain the rebound tension.

[0045] For details, please refer to Figure 6 A top spring 11 is fitted on the telescopic rod 10 near the inner wall of the insertion tube 301 and the wedge block 9. The top spring 11 can be used to make the telescopic rod 10 automatically and quickly separate from the straight groove 201 when it is stored, which can effectively improve the disassembly efficiency.

[0046] For details, please refer to Figure 7 as well as Figure 8 The insertion tube 301 has symmetrically sliding locking blocks 15 at both ends. Each locking block 15 has a horizontally arranged pull rod 16. A sleeve 18 is slidably fitted onto the outer circumference of the pull rod 16. Each sleeve 18 is fixed to the outer wall of the insertion tube 301. A compression spring 17 is fitted onto each pull rod 16 near the position between the locking block 15 and the inner wall of the sleeve 18. Each end of the cross slide 12 has a pressing slope 1201. The pressing slope 1201 slides against the slope of the locking block 15. The pressing slope 1201 and the locking block 15 are used to achieve the desired effect. In conjunction with the installation of the handwheel assembly 3, the pressing inclined surface 1201 abuts against the locking block 15, causing the locking block 15 to automatically enter the insertion tube 301. When the pressing inclined surface 1201 separates from the locking block 15, the compression spring 17 drives the locking block 15 to automatically reset, causing the cross slide 12 to be subjected to reverse resistance, thereby fixing the handle 304. When the handwheel assembly 3 is rotated, the handle 304 will not be misaligned no matter how it is operated, greatly improving the safety and stability of use.

[0047] For details, please refer to Figure 8 Each end of the pull rod 16 is equipped with a pull ring 19, which facilitates quick manual disassembly.

[0048] For details, please refer to Figure 1 as well as Figure 2 The storage sleeve 302 has a latching notch 3021 on both sides near the edge of the storage slot 3011. The latching notch 3021 allows the handle 304 to be quickly pulled out of the storage slot 3011 by the fingertips, improving ease of use.

[0049] For details, please refer to Figure 3 The diameter of the straight groove 201 is larger than the diameter of the telescopic rod 10, and the diameter of the telescopic rod 10 is smaller than the diameter of the straight groove 201, which facilitates the extension and retraction of the telescopic rod 10, thereby effectively improving the ease of use and stability.

[0050] In use, the above solution involves first inserting the insertion tube 301 into the transmission sleeve 2, then inserting a finger into the latching notch 3021 to remove the handle 304. Under the action of the rotating rod 303, the handle 304 rotates and stands upright. The rotation of the rotating rod 303 drives the gear 4 to rotate, which in turn drives the connecting plate 6 via the rack 5, and the push rod 7 to move. This causes the cone 8 to simultaneously apply pressure to the wedge block 9. The pressure on the wedge block 9 causes the telescopic rod 10 to extend out of the insertion tube 301 and enter the straight groove 201. At this point, the handle 304 is rotated... 4 can drive the guide rod 1 to rotate for locking. After use, pull the two pull rings 19 simultaneously to separate the locking block 15 from the cross slide 12. Under the pulling force of the tension spring 14, the cross slide 12 resets and drives the rack 5 to slide, which in turn drives the gear 4 to rotate, so that the handle 304 automatically rotates into the storage slot 3011 for storage. When the tension spring 14 returns to its original position, the wedge block 9 loses pressure. Under the action of the top spring 11, it drives the telescopic rod 10 to re-enter the insertion tube 301. At this time, the handwheel assembly 3 can be disassembled and collected as a whole.

[0051] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A locking handwheel anti-disengagement structure, comprising a guide rod (1), characterized in that, A transmission sleeve (2) is fixedly inserted inside the guide rod (1). A handwheel assembly (3) for driving the guide rod (1) to rotate is slidably inserted inside the transmission sleeve (2). The handwheel assembly (3) includes a insertion tube (301) slidably inserted inside the transmission sleeve (2). A storage sleeve (302) is fitted on the outer circumferential surface of the insertion tube (301). Multiple handles (304) are inserted in a circular array at equal intervals on the outer circumferential surface of the storage sleeve (302). A rotating rod (303) is inserted at the lower part of each handle (304). The rotating rod (303) rotatably passes through the storage sleeve (302). Multiple telescopic rods (10) are slidably inserted at equal intervals on the outer circumferential surface of one end of the insertion tube (301) inside the transmission sleeve (2). The telescopic rods (10) are slidably inserted inside the transmission sleeve (2). The circular array has multiple straight slots (201), and the telescopic rods (10) are slidably inserted into the straight slots (201). The outer circumferential surface of the rotating rod (303) is fitted with a gear (4). The gear (4) is laterally meshed with a rack (5) at one end near the center of the insertion tube (301). The rack (5) is provided with the same connecting plate (6) at one end near the telescopic rod (10). The connecting plate (6) is slidably inserted into the inner wall of the insertion tube (301). The connecting plate (6) is laterally coaxially provided with a top rod (7). The top rod (7) is coaxially provided with a cone (8) at one end near the telescopic rod (10). The bottom end of the telescopic rod (10) is provided with a wedge (9). The wedge (9) is provided with an abutting inclined surface (91) on one side near the cone (8). The abutting inclined surface (91) slides against the outer circumferential surface of the cone (8). The outer circumferential surfaces of the storage sleeve (302) and the insertion tube (301) are provided with multiple storage slots (3011) arranged in an equidistant circular array, and the handles (304) are slidably inserted into the storage slots (3011). The rack (5) is provided with the same cross slide (12) at the end away from the connecting plate (6). The cross slide (12) is slidably inserted into the inner wall of the insertion tube (301). Slide grooves (13) are provided at the intersection of the inner wall of the insertion tube (301) and the cross slide (12).

2. The anti-disengagement structure for a locking handwheel according to claim 1, characterized in that, The insertion tube (301) is provided with a cover plate (305) at the end away from the guide rod (1), and the cross slide (12) and the inner wall of the cover plate (305) are provided with the same tension spring (14) in the transverse direction.

3. The anti-disengagement structure for a locking handwheel according to claim 2, characterized in that, Top springs (11) are fitted on the telescopic rod (10) near the inner wall of the insertion tube (301) and the wedge block (9).

4. The anti-disengagement structure for a locking handwheel according to claim 3, characterized in that, The insertion tube (301) is symmetrically and slidably fitted with locking blocks (15) at both ends. Each locking block (15) is provided with a pull rod (16) in the horizontal direction. A sleeve (18) is slidably fitted on the outer circumference of the pull rod (16). The sleeve (18) is fixed to the outer wall of the insertion tube (301). A compression spring (17) is fitted on the pull rod (16) near the position between the locking block (15) and the inner wall of the sleeve (18). Both ends of the cross slide (12) are provided with extrusion slopes (1201). The extrusion slopes (1201) slide against the slopes of the locking blocks (15).

5. The anti-disengagement structure for a locking handwheel according to claim 4, characterized in that, Each of the pull rods (16) is provided with a pull ring (19) at its end.

6. The anti-disengagement structure for a locking handwheel according to claim 5, characterized in that, The storage sleeve (302) has snap-on notches (3021) on both sides of the edge near the storage slot (3011).

7. The anti-disengagement structure for a locking handwheel according to claim 6, characterized in that, The diameter of the straight groove (201) is larger than the diameter of the telescopic rod (10).

8. The method of using the anti-disengagement structure for a locking handwheel according to claim 6, characterized in that, Includes the following steps: Step 1: Insert the connector (301) into the transmission sleeve (2), insert your fingers into the snap-fit ​​notch (3021) at will, and take out the handle (304). Under the action of the rotating rod (303), the handle (304) rotates and stands upright. Step 2: When the rotating rod (303) rotates, it drives the gear (4) to rotate. When the gear (4) rotates, it drives the connecting plate (6) to move through the rack (5) and drives the top rod (7) to move, so that the cone (8) applies pressure to the wedge (9) at the same time. The wedge (9) is pressed and drives the telescopic rod (10) to extend out of the insertion pipe (301) and enter the straight groove (201). At this time, rotating the handle (304) can drive the guide rod (1) to rotate to perform the locking operation. Step 3: After use, pull the two pull rings (19) simultaneously to separate the locking block (15) from the cross slide (12). Under the pulling force of the tension spring (14), the cross slide (12) resets and drives the rack (5) to slide, which in turn drives the gear (4) to rotate, so that the handle (304) automatically rotates into the storage slot (3011) for storage. Step 4: When the tension spring (14) is resetting the tension, the wedge block (9) loses pressure and, under the action of the top spring (11), drives the telescopic rod (10) to re-enter the insertion tube (301). At this time, the handwheel assembly (3) can be disassembled and collected as a whole.

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