Step-by-step double-axis rotating shaft based on thread limiting
By combining the threaded limiting structure and the damping plate, the problems of module and tooth count limitation and reversing paddle deformation of the existing dual-axis rotating shaft are solved, realizing unrestricted step-by-step dual-axis rotation and stable limiting effect.
Patent Information
- Application Number
- CN202520251638.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing dual-axis rotary shaft technology suffers from limitations in module and number of teeth, as well as the deformation of the reversing paddle due to friction between the front and rear axles, making it impossible to achieve effective positioning.
The system employs a threaded limiting structure. The threaded structure of the front axle drives the limiting plate to move downward, causing the limiting block of the rear axle to disengage from the limiting groove, thereby realizing the rotational freedom of the rear axle. The rotation of the front and rear axles is restricted by the cooperation of the damping plate and the limiting component.
It achieves step-by-step dual-axis rotation without module or tooth count limitations, avoids deformation of the reversing paddle, and ensures the stability and reliability of the limit function.
Smart Images
Figure CN223690166U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of step-by-step double shaft rotation based on thread limiting, belong to rotation technical field. BACKGROUND
[0002] Double shaft rotation technology is widely concerned due to its unique structure and superior performance, after searching, prior art (see Figure 1 ) discloses two double shaft rotation technical solutions, one ( Figure 1 left) is connected by gear structure, damping plate structure with front shaft rear axle, the rotation of this form shaft is double shaft synchronous rotation form, i.e. the rotation angle of front shaft, rear axle relative to the rotation angle of virtual center surface between two shafts is same, is synchronous motion, total rotation angle range is 0 ° ~ 360 °, another ( Figure 1 right) is connected by reversing switch, damping plate structure with front shaft rear axle, the rotation of this form shaft is double shaft step-by-step rotation form, i.e. reversing switch is first limited by rear axle notch, limit rear axle rotation freedom, front shaft rotates 180 ° first, at this time reversing switch is limited by front shaft notch rotation ability, rear axle releases rotation freedom and rotates 180 ° again to complete 360 ° circumferential rotation together.
[0003] But the two schemes have the following shortcomings:
[0004] Figure 1 The application form shown in left cannot realize double shaft step-by-step rotation, and the principle of synchronous rotation is realized by gear engagement, since the machining and manufacturing of gear are limited by modulus and tooth number, the application of shaft of any size cannot be realized, so the application scene is limited;
[0005] Figure 1 The application form shown in right has two defects, one is that reversing switch is limited by front shaft rear axle friction when reversing, so rear axle has certain freedom when front shaft does not rotate to 180 °, at this time, the double shaft system is double shaft rotation state, not step-by-step motion in absolute sense, the other is that reversing switch is extruded and deformed by long-term friction of front shaft rear axle, and the limiting notch of front shaft and rear axle becomes larger and larger, finally, the limiting function cannot be realized. UTILITY MODEL CONTENTS
[0006] The utility model aims at the technical problems of prior art, and provides a kind of step-by-step double shaft rotation based on thread limiting to solve the problems of the limitation of modulus and tooth number in prior art and the extrusion and deformation of reversing switch by long-term friction of front shaft rear axle, and the limiting notch of front shaft and rear axle becomes larger and larger, finally, the limiting function cannot be realized.
[0007] To solve the above technical problems, the utility model discloses a kind of step-by-step double shaft rotation based on thread limiting, including front axle and rear axle, the bottom between front axle and rear axle is connected with limiting plate, the front axle and rear axle are all fixedly connected with limiting piece, the upper end of the limiting plate is fixedly connected with a group of symmetrically arranged stopper, two The stopper is respectively limited to butt joint with the limiting piece on two sides, the rotation degree of front axle and rear axle is limited, the bottom outer side of front axle and rear axle is equipped with several damping plate, the bottom end of front axle and rear axle is connected with nut by thread, the middle part of front axle is provided with thread structure, and thread structure is cooperated with limiting plate and is connected by thread, reversing limiting structure is arranged between limiting plate and rear axle, when front axle rotates, drive limiting plate to move down, so that the limiting reversing mechanism on rear axle is separated from limiting plate and has rotation freedom degree.
[0008] Wherein, the front end of the limiting piece on two sides is all provided with semicircular annular slot, and the end face of the slot on the limiting piece on two sides is abutted with the back surface of the stopper adjacent thereto.
[0009] Wherein, the reversing limiting structure includes groove on the side of limiting plate, the lower end of the groove is connected with limiting slot, and the outer side of rear axle is fixedly connected with limiting block.
[0010] When being in limiting state, the limiting block is inserted into limiting slot in cooperation, and the rotation freedom degree of rear axle is limited.
[0011] When being in rotating state, the limiting block is separated from limiting slot and moves to the inside of groove.
[0012] The thickness of the groove is greater than the thickness of the limiting block.
[0013] The upper end of the front axle and rear axle is fixedly connected with connecting plate.
[0014] Beneficial effects:
[0015] The utility model discloses a thread structure on front axle, drives limiting plate to move down in the process of rotating front axle, so that the limiting block on rear axle is separated from limiting slot, the limiting block moves to the inside of groove, so that rear axle has rotation freedom degree, realizes double shaft rotation, compared with comparative document, not limited by modulus tooth number, and the problem that reversing tab is extruded and deformed by long-term friction of front axle and rear axle, finally unable to realize limiting function is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and / or other aspects of the utility model will become more apparent by describing in detail the accompanying drawings and specific embodiments.
[0017] Figure 1 It is two technical solutions of prior art schematic diagram.
[0018] Figure 2 It is the first perspective view of the utility model.
[0019] Figure 3 It is the second perspective view of the utility model.
[0020] Figure 4 It is the split schematic view of the utility model;
[0021] Figure 5 It is the utility model Figure 2 The enlarged view of A in the utility model.
[0022] Front axle 1, rear axle 2, limiting piece 3, stopper 4, threaded structure 5, limiting plate 6, damping plate 7, nut 8, limiting block 9, slot 10, limiting groove 11. Specific implementation
[0023] According to the following examples, the utility model can be better understood.
[0024] As Figures 2-5 Shown, including front axle 1 and rear axle 2, front axle 1 and rear axle 2's bottom end between connecting limiting plate 6, front axle 1 and rear axle 2 are all fixedly connected with limiting piece 3, the upper end of limiting plate 6 is fixedly connected with a group of symmetrically arranged stopper 4, two stoppers 4 are respectively limitedly connected with two sides limiting piece 3, the rotation degree of front axle 1 and rear axle 2 is limited, the bottom outside of front axle 1 and rear axle 2 is provided with a plurality of damping plates 7, the bottom end of front axle 1 and rear axle 2 is screw-connected with nut 8, the middle part of front axle 1 is provided with threaded structure 5, and threaded structure 5 is screw-connected with limiting plate 6, reversing limiting structure is arranged between limiting plate 6 and rear axle 2, front axle 1 rotates and drives limiting plate 6 to move down, so that the limiting reversing mechanism on rear axle 2 is separated from limiting plate 6 and has rotation freedom.
[0025] When rotating front axle 1, limiting plate 6 is driven to move down by the screw connection of threaded structure 5 and limiting plate 6, in the process of moving down limiting plate 6, rear axle 2 has rotatable freedom by reversing limiting structure, realizing double shaft center rotation.
[0026] As Figure 2 , 3 And 4 shown, the front end of two sides limiting piece 3 is all provided with semicircular annular slot, and the end face of the slot on two sides limiting piece 3 is abutted with the back surface of the adjacent stopper 4.
[0027] By the abutment of the slot end face of limiting piece 3 and stopper 4, front axle 1 and rear axle 2 have the limitation of rotation freedom.
[0028] As Figure 2 , 5As shown, the reversing limiting structure includes a slot 10 formed on one side of the limiting plate 6. A limiting groove 11 is formed through the lower end of the slot 10. A limiting block 9 is fixedly connected to the outer side of the rear axle 2. When in the limiting state, the limiting block 9 and the limiting groove 11 are engaged to restrict the rotational freedom of the rear axle 2. When in the rotational state, the limiting block 9 disengages from the limiting groove 11 and moves into the interior of the slot 10. The thickness of the slot 10 is greater than the thickness of the limiting block 9.
[0029] When the front axle 1 rotates, the threaded connection between the threaded structure 5 and the limiting plate 6 drives the limiting plate 6 to move downward. During the downward movement of the limiting plate 6, the limiting block 9 is disengaged from the limiting groove 11 and moves into the interior of the slot 10. At this time, the rear axle 2 has rotational freedom and rotates with the rear axle 2 as the axis.
[0030] like Figure 2 , 3 As shown in Figure 4, the upper ends of both the front axle 1 and the rear axle 2 are fixedly connected with connecting plates, and the structure is connected through the connecting plates.
[0031] The working principle of this rotating shaft is as follows: In the initial state, due to the reversing limiting structure and limiting plate 6 of the rear axle 2, the rear axle 2 cannot rotate around its axis. At this time, the front axle 1 rotates counterclockwise around its axis. The threaded structure 5 on the front axle 1 drives the limiting plate 6 to move downward. When the front axle 1 rotates to 180°, the limiting plate 6 just disengages from the limiting block 9 of the rear axle 2, and the rear axle 2 gains the freedom to rotate around its axis. At the same time, the limiting component 3 and the stop block on the front axle 1 prevent the front axle 1 from having the freedom to rotate counterclockwise. During this process, the limiting plate 6 and damping plate 7, among other structural components, do not rotate; only the limiting plate 6 is allowed to move downward.
[0032] When force is continued to be applied to the front axle 1, the front axle 1, along with the limiting plate 6, damping plate 7, and other structural components, will continue to rotate counterclockwise around the rear axle 2. When the front axle 1 has rotated to 360°, the limiting plate 6 will interact with the rotation limiting structure of the rear axle 2, preventing the front axle 1 from continuing to rotate. At this point, the front axle 1 has completed the entire process of rotating 360°.
[0033] When the front shaft 1 needs to rotate clockwise back to its initial state, since the lever arm of the force application point is less than that of the rear shaft 2, the front shaft 1, the limiting plate 6, the damping plate 7, etc. will rotate around the rear shaft 2 first, achieving a rotation process of 360° to 180°. When the limiting plate 6 and the limiting structure of the rear shaft 2 act, the rear shaft 2 stops rotating and continues to apply force to the front shaft 1. Through the action of the threaded structure 5, the limiting plate 6 is lifted upward. At this time, the rear shaft 2 loses its rotational freedom, and the front shaft 1 completes the final 180° to 0° process, finally returning to its initial state.
[0034] The utility model provides a kind of step-by-step double-axle center pivot based on the thought and method of thread limiting, the method and approach of the specific implementation of this technical scheme are many, above-mentioned is only the preferred embodiment of the utility model, it should be pointed out that, for the ordinary skilled person in the art, without departing from the principle of the utility model, still can make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the utility model. The components not specified in the embodiment can be implemented using existing technology.
Claims
1. A step-by-step double shaft rotating shaft based on thread limiting, comprising a front shaft (1) and a rear shaft (2), a limiting plate (6) is connected between the bottom ends of the front shaft (1) and the rear shaft (2), the front shaft (1) and the rear shaft (2) are both fixedly connected with limiting pieces (3), the upper end of the limiting plate (6) is fixedly connected with a group of symmetrically arranged stop blocks (4), the two stop blocks (4) are respectively limitedly connected with the limiting pieces (3) on both sides, the rotation degrees of the front shaft (1) and the rear shaft (2) are limited, the bottom outer sides of the front shaft (1) and the rear shaft (2) are sleeved with a plurality of damping plates (7), the bottom ends of the front shaft (1) and the rear shaft (2) are threadedly connected with nuts (8), characterized in that, The middle part of the front shaft (1) is provided with a threaded structure (5), and the threaded structure (5) is threadedly connected with a limiting plate (6), a reversing limiting structure is arranged between the limiting plate (6) and the rear shaft (2), and when the front shaft (1) rotates, the limiting plate (6) is driven to move downward, so that the limiting reversing mechanism on the rear shaft (2) is disengaged from the limiting plate (6) and has a rotating freedom degree.
2. A stepped dual shaft rotating shaft based on thread limiting according to claim 1, characterized in that, The front end of the limiting piece (3) on both sides is provided with a semicircular annular slot, and the end face of the slot on the limiting piece (3) on both sides is in abutment with the back surface of the adjacent stop block (4).
3. A stepped dual shaft rotating shaft based on thread limiting according to claim 2, characterized in that, The reversing limiting structure comprises a slot (10) formed on one side of the limiting plate (6), a limiting groove (11) is formed at the lower end of the slot (10), and a limiting block (9) is fixedly connected to the outer side of the rear shaft (2).
4. The stepped dual-axis rotating shaft based on thread limiting according to claim 3, characterized in that, When in the limiting state, the limiting block (9) is inserted into the limiting groove (11) in cooperation, and the rotating freedom degree of the rear shaft (2) is limited.
5. A stepped double-bow shaft based on thread limiting according to any one of claims 4, characterized in that, When in the rotating state, the limiting block (9) moves away from the limiting groove (11) and moves to the inside of the slot (10).
6. A stepped dual shaft rotating shaft based on thread limiting according to claim 5, characterized in that, The thickness of the slot (10) is greater than the thickness of the limiting block (9).
7. A stepped dual-axial rotating shaft based on thread limiting according to any one of claims 1-4, 6, characterized in that, The upper end of the front shaft (1) and the rear shaft (2) is fixedly connected with a connecting plate.