Ratchet wheel retreating structure

Abstract

The ratchet wheel retreating structure comprises a base, a rotating plate, a ratchet wheel, a rotating rod, a pressing rod, a shifting rod and a sliding block, the rotating plate is movably connected into the base in a sleeved mode from the back face of the base, a mounting groove is formed in the front face of the base, the ratchet wheel is connected into the mounting groove in a sleeved mode, and a first sleeve is fixedly connected to the middle of the front face of the rotating plate; the rotating rod is arranged on the front face of the base, and a second sleeve is fixedly connected to the middle of the rotating rod. Through the linkage design of the driving lever, the pressing lever and the sliding block, the limitation that a traditional ratchet wheel structure can only move in one direction is solved, the driving lever shell is pushed to drive the driving lever to rotate, so that the pressing lever is pushed to rotate around the center shaft, the head end of the pressing lever pokes the sliding block protrusion to the circle center direction of the rotating plate, the head end of the sliding block is driven to be separated from the ratchet wheel tooth groove, and therefore one-way locking is relieved; at the moment, the rotating rod can rotate anticlockwise, the rotating plate is driven by the first cylinder to synchronously retreat, and the reverse retreating function of the ratchet wheel structure is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission structures, and in particular to a ratchet retraction structure. Background Art

[0002] In the field of mechanical transmission and control, the ratchet structure, as an important intermittent motion mechanism, is widely used in various mechanical equipment, such as jacks, bicycle flywheels, clocks, and automated production lines. Its core function is to achieve unidirectional intermittent rotation and effectively prevent reverse motion, providing a key guarantee for the stable operation and precise control of the mechanical system.

[0003] However, most existing ratchet structures only allow one-way movement and cannot perform reverse retraction operations, which can easily cause many inconveniences in practical applications and limit the improvement of the performance of related mechanical equipment and the expansion of application fields.

[0004] Therefore, it is necessary to invent a ratchet retraction structure to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a ratchet retraction structure to solve the problems in the above technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ratchet retraction structure, comprising a base, a rotary plate, a ratchet, a rotary rod, a pressure rod, a shift rod and a slider, the rotary plate being movably sleeved inside the base from the back side of the base, a mounting groove being provided on the front side of the base, the ratchet being sleeved inside the mounting groove, a No. 1 sleeve being fixedly connected at the middle position of the front side of the rotary plate, the rotary rod being provided on the front side of the base, a No. 2 sleeve being fixedly connected to the outer side of the No. 1 sleeve, an upper groove and a lower groove being provided on the front side of the rotary plate, the slider being slidably connected inside the upper groove, the head end of the slider matching the tooth groove on the inner wall of the ratchet, and a protrusion being fixedly connected to the surface of the slider; The back of the rotating rod is fixedly connected to a No. 1 cylinder, one end of the No. 1 cylinder is inserted into the lower groove, the front of the rotating rod is provided with a No. 1 sinking groove, a No. 2 sinking groove is provided at a corner of the No. 1 sinking groove, the pressure rod is rotatably connected to the No. 2 sinking groove, the surface of the rotating rod is provided with a through groove, the through groove is connected to the No. 2 sinking groove, one end of the protrusion passes through the through groove and extends to the No. 2 sinking groove, the driving rod is arranged in the No. 1 sinking groove, the head end of the driving rod is movably sleeved on the outside of the No. 2 sleeve, the tail end of the driving rod extends to the No. 2 sinking groove, and the tail end of the driving rod is fixedly connected to the driving rod housing; By pushing the lever housing, the head end of the lever can be driven to rotate around the No. 2 sleeve. When the tail end of the lever rotates, it can push the tail end of the pressure rod, causing the pressure rod to rotate around its central axis. At this time, the head end of the pressure rod will push the protrusion toward the center of the rotating plate, so that the head end of the slider is disengaged from the tooth groove of the ratchet. At this time, the rotating rod can rotate counterclockwise. When the rotating rod rotates, the rotating plate is driven to rotate together with the help of the No. 1 cylinder, thereby realizing the retraction operation.

[0007] Preferably, the middle portion of the rotating rod is a disc-shaped structure, and both ends of the rotating rod are long rod-shaped structures.

[0008] The two ends of the long rod are convenient for the operator to hold and rotate during the retraction operation.

[0009] Preferably, the inner wall of the installation groove is provided with four positioning grooves distributed in a circular array, the outer surface of the ratchet is fixedly connected with four positioning blocks distributed in a circular array, and the four positioning blocks are respectively engaged with the four positioning grooves.

[0010] The ratchet and the base are precisely fixed axially by the four positioning grooves and the four positioning blocks, preventing the ratchet from shifting during the retraction process.

[0011] Preferably, a No. 2 cylinder is fixedly connected to the inside of the No. 2 sinking trough, and a No. 3 cylinder is fixedly connected to the surface of the pressure rod near its tail end. A tension spring is installed between the No. 2 cylinder and the No. 3 cylinder, and the elastic force of the tension spring is used to realize the reset operation of the pressure rod.

[0012] Preferably, the No. 2 cylinder, the No. 3 cylinder and the tension spring do not contact the shift rod, and the tail end of the pressure rod is pulled by the tension spring in the initial state, so that the head end of the pressure rod does not contact the protrusion, thereby avoiding affecting the normal movement of the slider.

[0013] Preferably, an accommodating hole is opened on the inner wall of one side of the upper groove, and a guide rod is slidably connected to the inside of the accommodating hole. One end of the guide rod extends to the outside of the accommodating hole and is fixedly connected to the tail end of the slider.

[0014] The guide rod slides in the receiving hole to provide a linear motion guide for the slider and prevent it from escaping from the upper groove.

[0015] Preferably, a spring is movably sleeved on the outer side of the guide rod, one end of the spring abuts against the inner wall of the upper groove, and the other end of the spring abuts against the tail end of the slider, and the elastic force of the spring is used to realize the reset operation of the slider.

[0016] After the slider loses the squeezing of the pressure rod, the spring resumes its extension and pushes the slider back to its original position, so that the end of the slider is re-embedded in the tooth groove of the ratchet, restoring the one-way locking function.

[0017] Preferably, the lever housing is arranged outside the rotating rod, a sliding groove is opened on the side wall of the second sinking groove, and the part of the rear end of the lever close to the lever housing is slidably connected to the sliding groove.

[0018] The slide groove design provides a precise sliding path for the tail end of the lever, ensuring stable rotation of the lever.

[0019] Preferably, the surface of the lever housing is provided with anti-skid patterns, and the lever housing can slide against the outer surface of the rotating rod.

[0020] The anti-slip texture on the surface of the lever housing can increase friction, making it easier for the operator to push.

[0021] Preferably, a notch is provided on the surface of the rotating rod, the notch is communicated with the slide groove, and the notch matches the shifting rod.

[0022] The notch design makes it easy to disassemble the lever when maintaining the device.

[0023] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. The linkage design of the lever, pressure rod, and slider overcomes the limitation of the traditional ratchet structure that it can only move in one direction. By pushing the lever housing to rotate the lever, the pressure rod rotates around the central axis, causing the pressure rod head to push the slider protrusion toward the center of the rotating plate, driving the slider head out of the ratchet tooth groove, thereby releasing the one-way lock. The rotary rod can now rotate counterclockwise and, through the No. 1 cylinder, drive the rotating plate to retract synchronously, realizing the reverse retraction function of the ratchet structure. 2. The dual reset system design of a tension spring and a spring automatically pulls the pressure rod back to its original position after the lever is released, preventing the tip of the pressure rod from continuously squeezing the protrusion. After the slider loses the pressure of the pressure rod, the spring resumes its extension and pushes the slider back to its original position, allowing the tip of the slider to re-engage the tooth groove of the ratchet to restore the one-way lock. This design ensures that the structure can automatically return to its initial stable state after the retraction operation is completed, thereby improving the reliability of the mechanical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first perspective; Figure 2 This is a first-perspective structural exploded view of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention from a second viewing angle; Figure 4 This is a second perspective structural exploded view of the present invention; Figure 5 This is a schematic diagram of the overall structure of the present invention when performing a rollback operation; Figure 6 It is a structural schematic diagram of the base and ratchet of the present invention; Figure 7 This is a schematic structural diagram of the rotary plate, ratchet wheel and slider when the retraction operation is not performed in the present invention; Figure 8 This is a schematic structural diagram of the rotary plate, ratchet wheel and slider during the retraction operation of the present invention; Figure 9 This is a schematic structural diagram of the rotating rod of the present invention from a first perspective; Figure 10 This is a schematic structural diagram of the rotating rod of the present invention from a second viewing angle; Figure 11 It is a structural schematic diagram of the shift lever and the shift lever housing of the present invention.

[0025] Description of reference numerals: 1. Base; 2. Rotary plate; 3. Ratchet; 4. Rotary rod; 5. Pressure rod; 6. Push rod; 7. Slider; 8. Mounting groove; 9. Socket No. 1; 10. Socket No. 2; 11. Upper groove; 12. Lower groove; 13. Protrusion; 14. Cylinder No. 1; 15. Sinking groove No. 1; 16. Sinking groove No. 2; 17. Through groove; 18. Push rod housing; 19. Positioning groove; 20. Positioning block; 21. Cylinder No. 2; 22. Cylinder No. 3; 23. Tension spring; 24. Guide rod; 25. Spring; 26. Slide groove; 27. Anti-slip pattern; 28. Notch. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The present invention provides Figure 1-11 The ratchet retraction structure shown includes a base 1, a rotary plate 2, a ratchet 3, a rotary rod 4, a pressure rod 5, a shift rod 6 and a slider 7. The rotary plate 2 is movably sleeved inside the base 1 from the back side of the base 1. A mounting groove 8 is provided on the front side of the base 1. The ratchet 3 is sleeved inside the mounting groove 8. A No. 1 sleeve 9 is fixedly connected to the middle position of the front side of the rotary plate 2. The rotary rod 4 is provided on the front side of the base 1. A No. 2 sleeve 10 is fixedly connected to the middle part of the rotary rod 4. The No. 2 sleeve 10 is movably sleeved on the outside of the No. 1 sleeve 9. An upper groove 11 and a lower groove 12 are provided on the front side of the rotary plate 2. The slider 7 is slidably connected to the inside of the upper groove 11. The head end of the slider 7 matches the tooth groove on the inner wall of the ratchet 3. A protrusion 13 is fixedly connected to the surface of the slider 7. The back of the rotary rod 4 is fixedly connected to a No. 1 cylinder 14, one end of the No. 1 cylinder 14 is inserted into the lower groove 12, the front of the rotary rod 4 is provided with a No. 1 sinking groove 15, and a No. 2 sinking groove 16 is provided at one corner of the No. 1 sinking groove 15. The pressure rod 5 is rotatably connected to the inside of the No. 2 sinking groove 16. A through groove 17 is provided on the surface of the rotary rod 4. The through groove 17 is connected to the No. 2 sinking groove 16. One end of the protrusion 13 passes through the through groove 17 and extends to the inside of the No. 2 sinking groove 16. The lever 6 is arranged inside the No. 1 sinking groove 15. The head end of the lever 6 is movably sleeved on the outside of the No. 2 sleeve 10. The tail end of the lever 6 extends to the inside of the No. 2 sinking groove 16. The tail end of the lever 6 is fixedly connected to the lever housing 18. By pushing the lever housing 18, the head end of the lever 6 can be driven to rotate around the No. 2 sleeve 10. When the tail end of the lever 6 rotates, it can push the tail end of the pressure rod 5, so that the pressure rod 5 rotates around its central axis. At this time, the head end of the pressure rod 5 pushes the protrusion 13 toward the center of the circle of the rotary plate 2, so that the head end of the slider 7 is disengaged from the tooth groove of the ratchet 3. At this time, the rotary rod 4 can rotate in the counterclockwise direction. When the rotary rod 4 rotates, it drives the rotary plate 2 to rotate together with the help of the No. 1 cylinder 14, thereby realizing the retraction operation.

[0028] In one aspect of the present embodiment, the middle portion of the rotary rod 4 is a disc-shaped structure, and both ends of the rotary rod 4 are long rod-shaped structures. The inner wall of the mounting groove 8 is provided with four positioning grooves 19 distributed in a circular array, and the outer surface of the ratchet 3 is fixedly connected with four positioning blocks 20 distributed in a circular array, and the four positioning blocks 20 are respectively engaged with the four positioning grooves 19. The interior of the No. 2 sinking groove 16 is fixedly connected with a No. 2 cylinder 21, and the surface of the pressure rod 5 is fixedly connected with a No. 3 cylinder 22 near its tail end. A tension spring 23 is installed between the No. 2 cylinder 21 and the No. 3 cylinder 22, and the elastic force of the tension spring 23 is used to realize the reset operation of the pressure rod 5. The No. 2 cylinder 21, the No. 3 cylinder 22 and the tension spring 23 are not in contact with the shift rod 6. The tail end of the pressure rod 5 is pulled by the tension spring 23 in the initial state, so that the head end of the pressure rod 5 does not contact the protrusion 13, thereby avoiding The normal movement of the slider 7 is affected. An accommodating hole is provided on the inner wall of one side of the upper groove 11. A guide rod 24 is slidably connected to the inside of the accommodating hole. One end of the guide rod 24 extends to the outside of the accommodating hole and is fixedly connected to the tail end of the slider 7. A spring 25 is movably sleeved on the outside of the guide rod 24. One end of the spring 25 abuts against the inner wall of the upper groove 11, and the other end of the spring 25 abuts against the tail end of the slider 7. The elastic force of the spring 25 is used to realize the reset operation of the slider 7. The lever housing 18 is provided on the outside of the rotary rod 4. A sliding groove 26 is provided on the side wall of the No. 2 sinking groove 16. The part of the tail end of the lever 6 close to the lever housing 18 is slidably connected with the sliding groove 26. The surface of the lever housing 18 is provided with anti-slip grooves 27. The lever housing 18 can fit the outer surface of the rotary rod 4 for sliding. A notch 28 is provided on the surface of the rotary rod 4. The notch 28 is connected with the sliding groove 26, and the notch 28 matches the lever 6.

[0029] The ratchet 3, tension spring 23 and spring 25 mentioned in the above content are all existing technical products, and their specific structures and functions are not repeated here.

[0030] Working principle of the present invention: Refer to the instruction manual Figure 1-11 When performing the retraction operation, first, the operator manually pushes the lever housing 18 to slide against the outer surface of the rotary rod 4, thereby driving the lever 6 to move. The head end of the lever 6 rotates around the second sleeve 10. When the tail end of the lever 6 rotates, it pushes the tail end of the pressure rod 5, causing the pressure rod 5 to rotate around its axis. The head end of the pressure rod 5 presses the protrusion 13, causing the protrusion 13 to move along the through groove 17 toward the center of the rotary plate 2, thereby driving the slider 7 to slide along the upper groove 11 toward the center of the rotary plate 2, so that the head end of the slider 7 is disengaged from the tooth groove of the ratchet 3. At this time, the tension spring 23 is in a stretched state and the spring 25 is in a compressed state. At this time, the one-way locking state is released, and the rotary rod 4 can rotate in the counterclockwise direction. Since the No. 1 cylinder 14 on the back of the rotary rod 4 is inserted into the lower groove 12 of the rotary plate 2, when the rotary rod 4 rotates, the No. 1 cylinder 14 can drive the rotary plate 2 to rotate together, thereby realizing the retraction operation; After the retraction operation is completed, the lever housing 18 is released, the tension spring 23 begins to retract and pulls the pressure rod 5, so that the pressure rod 5 returns to its original position. The protrusion 13 is no longer squeezed by the pressure rod 5, and the spring 25 begins to extend outward and push the slider 7 back to its original position, so that the head end of the slider 7 is re-matched with the tooth groove of the ratchet 3, and the one-way locking function is restored.

Claims

1. A ratchet retraction structure, comprising a base (1), a rotary plate (2), a ratchet (3), a rotary rod (4), a pressure rod (5), a shifting rod (6) and a slider (7), characterized in that: The rotary plate (2) is movably sleeved inside the base (1) from the back side of the base (1), the front side of the base (1) is provided with a mounting groove (8), the ratchet (3) is sleeved inside the mounting groove (8), the middle position of the front side of the rotary plate (2) is fixedly connected to a No. 1 sleeve (9), the rotary rod (4) is arranged on the front side of the base (1), the middle part of the rotary rod (4) is fixedly connected to a No. 2 sleeve (10), the No. 2 sleeve (10) is movably sleeved outside the No. 1 sleeve (9), the front side of the rotary plate (2) is provided with an upper groove (11) and a lower groove (12), the slider (7) is slidably connected inside the upper groove (11), the head end of the slider (7) matches the tooth groove of the inner wall of the ratchet (3), and the surface of the slider (7) is fixedly connected with a protrusion (13); The back of the rotating rod (4) is fixedly connected to a No. 1 cylinder (14), one end of the No. 1 cylinder (14) is inserted into the lower groove (12), the front of the rotating rod (4) is provided with a No. 1 sinking groove (15), a corner of the No. 1 sinking groove (15) is provided with a No. 2 sinking groove (16), the pressure rod (5) is rotatably connected to the inside of the No. 2 sinking groove (16), the surface of the rotating rod (4) is provided with a through groove (17), the through groove (17 ) is connected to the No. 2 sinking groove (16), one end of the protrusion (13) passes through the through groove (17) and extends to the inside of the No. 2 sinking groove (16), the shifting rod (6) is arranged inside the No. 1 sinking groove (15), the head end of the shifting rod (6) is movably sleeved on the outside of the No. 2 sleeve (10), the tail end of the shifting rod (6) extends to the inside of the No. 2 sinking groove (16), and the tail end of the shifting rod (6) is fixedly connected to the shifting rod housing (18); By pushing the lever housing (18), the head end of the lever (6) can be driven to rotate around the second sleeve (10). When the tail end of the lever (6) rotates, the tail end of the pressure rod (5) can be pushed, so that the pressure rod (5) rotates around its axis. At this time, the head end of the pressure rod (5) moves the protrusion (13) toward the center of the rotating plate (2), so that the head end of the slider (7) is disengaged from the tooth groove of the ratchet (3). At this time, the rotating rod (4) can be rotated in the counterclockwise direction. When the rotating rod (4) rotates, it drives the rotating plate (2) to rotate together with the help of the first cylinder (14), thereby realizing the retraction operation.

2. The ratchet retraction structure according to claim 1, characterized in that: The middle portion of the rotating rod (4) is a disc-shaped structure, and both ends of the rotating rod (4) are long rod-shaped structures.

3. The ratchet retraction structure according to claim 1, characterized in that: The inner wall of the installation groove (8) is provided with four positioning grooves (19) distributed in a ring array, and the outer surface of the ratchet (3) is fixedly connected with four positioning blocks (20) distributed in a ring array, and the four positioning blocks (20) are respectively engaged with the four positioning grooves (19).

4. The ratchet retraction structure according to claim 1, characterized in that: A No. 2 cylinder (21) is fixedly connected to the interior of the No. 2 sinking trough (16), and a No. 3 cylinder (22) is fixedly connected to the surface of the pressure rod (5) near its tail end. A tension spring (23) is installed between the No. 2 cylinder (21) and the No. 3 cylinder (22), and the elastic force of the tension spring (23) is used to realize the reset operation of the pressure rod (5).

5. The ratchet retraction structure according to claim 4, characterized in that: The second cylinder (21), the third cylinder (22) and the tension spring (23) do not come into contact with the shift rod (6). The tail end of the pressure rod (5) is pulled by the tension spring (23) in the initial state, so that the head end of the pressure rod (5) does not come into contact with the protrusion (13), thereby avoiding affecting the normal movement of the slider (7).

6. The ratchet retraction structure according to claim 1, characterized in that: An accommodating hole is provided on the inner wall of one side of the upper groove (11), and a guide rod (24) is slidably connected to the inside of the accommodating hole. One end of the guide rod (24) extends to the outside of the accommodating hole and is fixedly connected to the tail end of the slider (7).

7. The ratchet retraction structure according to claim 6, characterized in that: A spring (25) is movably sleeved on the outer side of the guide rod (24), one end of the spring (25) abuts against the inner wall of the upper groove (11), and the other end of the spring (25) abuts against the tail end of the slider (7), and the elastic force of the spring (25) is used to realize the reset operation of the slider (7).

8. The ratchet retraction structure according to claim 1, characterized in that: The lever housing (18) is arranged outside the rotary rod (4), a sliding groove (26) is provided on the side wall of the second sinking groove (16), and a portion of the rear end of the lever (6) close to the lever housing (18) is slidably connected to the sliding groove (26).

9. The ratchet retraction structure according to claim 8, characterized in that: The surface of the lever housing (18) is provided with anti-skid patterns (27), and the lever housing (18) can be fitted on the outer surface of the rotary rod (4) for sliding.

10. The ratchet retraction structure according to claim 8, characterized in that: A notch (28) is provided on the surface of the rotating rod (4), the notch (28) is connected to the slide groove (26), and the notch (28) matches the shifting rod (6).

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