Step-by-step double-axis rotating shaft based on shifting piece conversion

Abstract

The step-by-step double-axis rotating shaft comprises a front shaft and a rear shaft, the lower end shaft parts of the front shaft and the rear shaft are jointly connected with a limiting structure, the lower end of the limiting structure is provided with a slide glass, a reversing shifting piece is arranged between the slide glass and the limiting structure, and the reversing shifting piece is connected with the front shaft and the rear shaft. A front shaft plectrum and a rear shaft plectrum which can be meshed with the reversing plectrum in a matched mode are arranged on the two sides of the reversing plectrum respectively, the front shaft plectrum and the rear shaft plectrum are arranged on the outer sides of the lower end shaft portions of the front shaft and the rear shaft respectively, a torsional spring is arranged at the lower end of the middle of the carrying piece, and one end of the torsional spring penetrates through the carrying piece to be connected with the reversing plectrum in a matched and inserted mode. According to the synchronous double-axis rotating shaft, step-by-step rotation of the front shaft and the rear shaft is achieved, and compared with two schemes in the prior art, the problem that a synchronous double-axis rotating shaft is limited by the gear modulus and the tooth number and cannot be applied in a large range can be solved.

Description

Technical Field

[0001] The utility model relates to a step-by-step double-axis rotating shaft based on paddle conversion, belonging to the technical field of keys. Background Art

[0002] In modern mechanical design and transmission systems, dual-axis shaft technology has attracted widespread attention due to its unique structure and superior performance.

[0003] After searching, the prior art (see Figure 1 ) discloses two dual-axis rotating shaft technical solutions, one of which is ( Figure 1 Left) is a gear structure and a damping plate structure that connect the front and rear axles. This type of rotating shaft is a dual-axis synchronous rotation form, that is, the front and rear axles have the same angular velocity and rotation angle relative to the virtual center plane between the two axes, which is a synchronous motion. The total rotation angle range is 0° to 360°. The other type ( Figure 1 (Right) The front and rear axles are connected by a reversing paddle and a damping plate structure. This type of rotating shaft features dual-axis step-by-step rotation: the reversing paddle first positions the rear axle notch, limiting the rear axle's rotational freedom. The front axle then rotates 180°. At this point, the reversing paddle is pushed against the front axle notch by the rear axle, limiting the front axle's rotational ability. After the rear axle releases its rotational freedom, it rotates another 180° to complete a 360° circumferential rotation.

[0004] However, both solutions have the following disadvantages:

[0005] Figure 1 The application shown on the left cannot achieve dual-axis step-by-step rotation. The principle of synchronous rotation is achieved through gear meshing. Since the processing and manufacturing of gears are limited by factors such as the module and the number of teeth, it cannot be used with shafts of any size, thus limiting its application scenarios.

[0006] Figure 1 The application shown on the right has two defects. First, the reversing paddle is limited by the friction between the front and rear axles during reversing. Therefore, the rear axle has a certain degree of freedom before the front axle rotates 180 degrees. At this time, the dual-axis system is in a dual-axis rotation state, not a step-by-step movement in the absolute sense. Second, the reversing paddle is squeezed and deformed by the long-term friction between the front and rear axles, and the limiting notches of the front and rear axles become larger and larger, and ultimately the limiting function cannot be realized. Utility Model Content

[0007] Purpose of the utility model: The technical problem to be solved by the utility model is to address the deficiencies of the existing technology and provide a step-by-step dual-axis rotating shaft based on paddle conversion to solve the problems of the two technical solutions in the existing technology being limited by the module number of teeth, etc., and the reversing paddle being squeezed and deformed by the long-term friction of the front and rear axles, and the limiting notches of the front and rear axles becoming larger and larger, and ultimately the limiting function cannot be realized.

[0008] The outer sides of the lower end shaft parts of the front axle and the rear axle are commonly connected to a limited structure, and a carrier is provided at the lower end of the limit structure, and a reversing paddle is provided between the carrier and the limit structure, and a front axle paddle and a rear axle paddle that can cooperate and bite therewith are respectively provided on both sides of the reversing paddle, and the front axle paddle and the rear axle paddle are respectively arranged on the outer sides of the lower end shaft parts of the front axle and the rear axle.

[0009] One end of the reversing paddle is fixedly connected to a convex portion, the outer side surface of the convex portion is arc-shaped, and a slot is provided in the middle of the convex portion for plugging into the end of the torsion spring.

[0010] The other end of the reversing paddle is fixedly connected with a connecting shaft, and the reversing paddle is rotatably connected between the limiting structure and the carrier through the connecting shaft.

[0011] The convex portion at the end of the reversing paddle and the two sides of the reversing paddle form side grooves, and the outer sides of the front axle paddle and the rear axle paddle are both provided with notches that cooperate with the side grooves. In the initial state, the notch on the rear axle paddle cooperates with the side grooves on the side of the reversing paddle.

[0012] The limiting structure includes a limiting plate that is plugged into the lower end shafts of the front axle and the rear axle, and a group of limiting rings are fixedly connected to both ends of the upper surface of the limiting plate. The two limiting rings are fixedly connected to the front axle and the rear axle respectively, and a limiting groove is provided on the same side of the two limiting rings.

[0013] A group of stoppers are fixedly connected to both sides of the middle portion of the upper surface of the slide, and the two stoppers are respectively in contact with one side end surface of the limiting grooves on both sides.

[0014] The front axle paddle and the rear axle paddle are both provided with square holes in the middle, and the lower end shafts of the front axle and the rear axle are provided with connecting parts that cooperate with and plug into the square holes. The front axle paddle and the rear axle paddle are respectively limited and plugged into the outer sides of the lower end shafts of the front axle and the rear axle.

[0015] Beneficial effects:

[0016] The present application uses a limiting structure and a reversing paddle in conjunction with the front and rear axle paddles. When in use, the front axle is first rotated 180° according to the axis of the front axle, and then the rear axle is rotated 180°, thereby realizing step-by-step rotation of the front and rear axles. Compared with the two solutions in the prior art, it can solve the problem that the synchronous dual-axis shaft is limited by the gear module and the number of teeth cannot be applied on a large scale. At the same time, it solves the problem that the distributed dual-axis shaft based on paddle reversing is not an absolutely distributed rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0018] Figure 1 Schematic diagram of two technical solutions in the prior art.

[0019] Figure 2 This is a first perspective stereogram of the present invention.

[0020] Figure 3 This is a second perspective stereogram of the present invention.

[0021] Figure 4 This is a schematic diagram of the assembly of the reversing paddle and the front and rear axle paddles in the present invention;

[0022] Figure 5 For this utility model Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0023] The present invention can be better understood according to the following embodiments.

[0024] like Figure 2 、 Figure 5 As shown, it includes a front axle 1 and a rear axle 2, the lower end shafts of the front axle 1 and the rear axle 2 are commonly connected to a limiting structure, the lower end of the limiting structure is provided with a carrier 8, a reversing paddle 7 is provided between the carrier 8 and the limiting structure, and front axle paddles 12 and rear axle paddles 11 that can cooperate and engage with the reversing paddle 7 are respectively provided on both sides of the reversing paddle 7, the front axle paddle 12 and the rear axle paddle 11 are respectively arranged on the outside of the lower end shafts of the front axle 1 and the rear axle 2, a torsion spring 9 is provided at the middle lower end of the carrier 8, one end of the torsion spring 9 passes through the carrier 8 and is engaged with the reversing paddle 7, one side of the carrier 8 is fixedly connected to the limiting stop column 15, and the other end of the torsion spring 9 extends to one side of the limiting stop column 15 and cooperates with it, a plurality of damping plates 10 are commonly connected to the outside of the lower end shafts of the front axle 1 and the rear axle 2, and nuts are provided at the ends of the lower end shafts of the front axle 1 and the rear axle 2 to limit the plurality of damping plates 10.

[0025] In this application, the reversing paddle 7 is respectively engaged with the front axle paddles 12 and the rear axle paddles 11 on both sides, and the setting of the limiting structure limits the rotation of the front axle 1 and the rear axle 2 during use. Specifically, during use, the front axle 1 is first rotated 180° counterclockwise. After the rotation, the front axle paddle 12 is engaged with the reversing paddle 7, and the limiting structure limits the rotation of the front axle 1. The whole body rotates with the rear axle 2 as the axis, and the whole body continues to turn by relying on the paddles to realize rotation with different axes.

[0026] like Figure 4 As shown, one end of the reversing paddle 7 is fixedly connected to a convex portion, the outer side surface of the convex portion is arc-shaped, and a slot is provided in the middle of the convex portion for plugging into the end of the torsion spring 9. The other end of the reversing paddle 7 is passed through and fixedly connected to a connecting shaft 14. The reversing paddle 7 is rotatably connected between the limiting structure and the carrier 8 through the connecting shaft 14. The convex portion at the end of the reversing paddle 7 and the two sides of the reversing paddle 7 form side grooves 13. The outer sides of the front axle paddle 12 and the rear axle paddle 11 are provided with notches that cooperate with the side grooves 13. In the initial state, the notch on the rear axle paddle 11 cooperates and engages with the side grooves 13 on the side of the reversing paddle 7.

[0027] In the initial state, the notch on the rear axle paddle 11 engages with the side groove 13 on the side of the reversing paddle 7. After the front axle 1 rotates 180° counterclockwise, the notch on the front axle paddle and the side groove 13 have a mating engagement state. At this time, the force continued to be applied is greater than the torque of the torsion spring 9 on the reversing paddle 7. The rear axle paddle 11 pushes the reversing paddle 7 into the notch of the front axle paddle 12. The front axle 1 and structural parts such as the limit plate 6 and the damping plate 10 will continue to rotate counterclockwise around the rear axle 2.

[0028] like Figure 2 As shown, the limiting structure includes a limiting plate 6 that is plugged into the lower end shafts of the front axle 1 and the rear axle 2, and a group of limiting rings 3 are fixedly connected to both ends of the upper surface of the limiting plate 6. The two limiting rings 3 are fixedly connected to the front axle 1 and the rear axle 2 respectively. A limiting groove 4 is provided on the same side of the two limiting rings 3, and a group of stop blocks 5 are fixedly connected to both sides of the middle part of the upper surface of the carrier 8, and the two stop blocks 5 are respectively abutted against one side end face of the limiting grooves 4 on both sides.

[0029] After the front axle 1 rotates 180° counterclockwise, the other end surface of the limit groove 4 thereon abuts against the stop block 5, limiting the further rotation of the front axle 1. At this time, the front axle 1 can no longer rotate. After continuing to apply force to the front axle, the rear axle paddle 11 pushes the reversing paddle 7 into the recess of the front axle paddle 12. The front axle 1 and structural parts such as the limit plate 6 and the damping plate 10 will continue to rotate counterclockwise around the rear axle 2. During the rotation process, the limit groove 4 of the limit ring 3 on the rear axle 2 abuts against the stop block 9 after rotating 180°, limiting the further rotation of the rear axle 2.

[0030] like Figure 4As shown, a square hole is provided in the middle of the front axle paddle 12 and the rear axle paddle 11, and the lower end shafts of the front axle 1 and the rear axle 2 are provided with connecting parts that cooperate with the square holes. The front axle paddle 12 and the rear axle paddle 11 are respectively limited and inserted into the outer sides of the lower end shafts of the front axle 1 and the rear axle 2.

[0031] Working principle: The implementation method of the rotating shaft is that in the initial state, due to the bite action of the rear axle paddle 11 and the reversing paddle 7, and the binding relationship between the rear axle 2 and the rear axle paddle 11, the rear axle 2 cannot rotate around its axis. At this time, the front axle 1 is rotated counterclockwise around its axis, and the front axle paddle 12 rotates together with the front axle 1. When the front axle 1 rotates to 180°, the limit plate 6 interacts with the limit structure of the front axle 1, and the front axle 1 stops rotating around its axis. At this time, the front axle paddle 12 has the ability to cooperate with the reversing paddle 7, and the rear axle 2 has the freedom to rotate around its axis. During this process, structural parts such as the limit plate 6 and the damping plate 10 do not rotate.

[0032] Continue to apply force to the front axle 1 counterclockwise. At this time, the force applied is greater than the torque of the torsion spring 9 on the reversing paddle 7. The rear axle paddle 11 pushes the reversing paddle 7 into the recess of the front axle paddle 12. The front axle 1 and the limit plate 6, damping plate 6 and other structural parts will continue to rotate counterclockwise around the rear axle 2. When the front axle 1 rotates to 360°, the limit plate 6 will interact with the rotation limit structure of the rear axle 2 to prevent the front axle 1 from continuing to rotate. At this time, the front axle 1 completes the entire process of the step-by-step 360° rotation.

[0033] When the front axle 1 needs to rotate clockwise to its initial state, due to the interaction between the reversing paddle 7 and the front axle paddle 12, the front axle 1 has no freedom of rotation around its axis. Therefore, when rotating, the front axle 1 and the limit plate 6, damping plate 10, etc. will first rotate around the rear axle 1 to achieve a rotation process of 360° to 180°. At this time, the limit structure of the rear axle 2 and the limit plate 6 stop rotating around the axis, and under the action of the torsion spring 9, the reversing paddle 7 automatically rotates into the recess of the rear axle paddle 11, and the front axle 1 begins to rotate around its axis. By continuing to apply force to the front axle, the front axle 1 completes the final 180° to 0° process and finally returns to its initial state.

[0034] This utility model provides a concept and method for a step-by-step dual-axis rotating shaft based on paddle shifting. There are many methods and approaches to implement this technical solution. The above is only a preferred embodiment of the utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the utility model, and such improvements and modifications should also be considered within the scope of protection of the utility model. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A step-by-step dual-axis rotating shaft based on paddle conversion, comprising a front shaft (1) and a rear shaft (2), characterized in that: The lower end shafts of the front axle (1) and the rear axle (2) are connected to a limiting structure. A carrier (8) is provided at the lower end of the limiting structure. A reversing paddle (7) is provided between the carrier (8) and the limiting structure. A front axle paddle (12) and a rear axle paddle (11) that can be engaged with the reversing paddle (7) are provided on both sides of the reversing paddle (7). The front axle paddle (12) and the rear axle paddle (11) are respectively provided on the outer sides of the lower end shafts of the front axle (1) and the rear axle (2). The center of the carrier (8) is provided with a plurality of reversing paddles (12 and 11) that can be engaged with the reversing paddle (7). A torsion spring (9) is provided at the lower end of the part, one end of the torsion spring (9) passes through the carrier (8) and is plugged into the reversing paddle (7), one side of the carrier (8) is fixedly connected to the limit stop column (15), and the other end of the torsion spring (9) extends to one side of the limit stop column (15) and is in contact with it. The outer sides of the lower end shafts of the front axle (1) and the rear axle (2) are commonly connected to a plurality of damping plates (10), and nuts are provided at the ends of the lower end shafts of the front axle (1) and the rear axle (2) to limit the plurality of damping plates (10).

2. The step-by-step dual-axis rotating shaft based on paddle conversion according to claim 1, characterized in that: One end of the reversing paddle (7) is fixedly connected to a convex portion, the outer side surface of the convex portion is in an arc shape, and the middle of the convex portion is provided with a slot for plugging into the end of the torsion spring (9).

3. The step-by-step dual-axis rotating shaft based on paddle conversion according to claim 2, characterized in that: The other end of the reversing paddle (7) is fixedly connected to a connecting shaft (14), and the reversing paddle (7) is rotatably connected between the limiting structure and the carrier (8) via the connecting shaft (14).

4. The step-by-step dual-axis rotating shaft based on paddle conversion according to claim 2, characterized in that: The convex portion at the end of the reversing paddle (7) and the two sides of the reversing paddle (7) are formed with side grooves (13); the outer sides of the front axle paddle (12) and the rear axle paddle (11) are provided with notches that engage with the side grooves (13); in an initial state, the notches on the rear axle paddle (11) engage with the side grooves (13) on the sides of the reversing paddle (7).

5. A step-by-step dual-axis rotating shaft based on paddle conversion according to any one of claims 1 to 4, characterized in that: The limiting structure comprises a limiting plate (6) which is plugged into the lower end shafts of the front axle (1) and the rear axle (2); a group of limiting rings (3) are fixedly connected to both ends of the upper surface of the limiting plate (6); the two limiting rings (3) are fixedly connected to the front axle (1) and the rear axle (2) respectively; and a limiting groove (4) is provided on the same side of the two limiting rings (3).

6. The step-by-step dual-axis rotating shaft based on paddle conversion according to claim 5, characterized in that: A group of stoppers (5) are fixedly connected to both sides of the middle portion of the upper surface of the carrier (8), and the two stoppers (5) are respectively in contact with one side end surface of the limiting groove (4) on both sides.

7. A step-by-step dual-axis rotating shaft based on paddle conversion according to any one of claims 1-4 and 6, characterized in that: A square hole is provided in the middle of the front axle paddle (12) and the rear axle paddle (11); the lower end shaft portions of the front axle (1) and the rear axle (2) are provided with connecting portions that are plugged into the square hole; the front axle paddle (12) and the rear axle paddle (11) are respectively plugged into the outer sides of the lower end shaft portions of the front axle (1) and the rear axle (2) in a limited manner.

Images