Rotating shaft aligning structure
By designing a piston cylinder and a floating center plate, the problem of decreased elasticity of torsion springs under repeated stress over a long period of time was solved, achieving a more precise and longer-lasting shaft return effect.
Patent Information
- Application Number
- CN202520294370.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-22
AI Technical Summary
In existing shaft return structures, the elastic properties of the torsion spring decrease under repeated stress over a long period of time, affecting the return effect and leading to complex design, increased maintenance requirements and costs.
It adopts a piston cylinder and floating center plate design. The piston cylinder drives the push rod to lift the positioning groove of the floating center plate, realizing the return of the rotating shaft. Combined with the deceleration piston, it provides a faster return speed.
It achieves more precise shaft return effect, extends service life, and reduces maintenance needs and costs.
Smart Images
Figure CN223825433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shaft return technology, and in particular to a shaft return structure. Background Technology
[0002] A pivot return mechanism is a mechanical or electromechanical system that ensures that rotating parts automatically return to their initial position after being subjected to force or operation. It is commonly used in scenarios that require precise control or automatic recovery to ensure that rotating parts automatically reset. It is widely used in the automotive, robotics, aerospace and other fields and has the advantages of improving accuracy, safety and convenience, but it also faces challenges such as complex design, maintenance requirements and costs.
[0003] Existing shaft return structures typically use torsion springs for return. By sleeved on the shaft, when an external force is applied to the shaft, it deviates from its initial position. Once the external force is removed, the torsion spring generates a restoring force, causing the shaft to return to its original position, thus achieving the return effect. However, in long-term use, the torsion spring will fatigue under repeated stress, leading to a decrease in elasticity and affecting the return effect. To address this, the inventors have proposed a shaft return structure to solve the aforementioned technical problems. Utility Model Content
[0004] The purpose of this utility model is achieved through the following means: a shaft return structure, including a base and a return assembly, the return assembly is installed on the top surface of the base, the return assembly includes a floating middle plate and a piston cylinder, the top surface of the base is provided with a mounting cover, the bottom surface of the mounting cover is provided with a mounting groove that matches the piston cylinder, the mounting groove extends toward the top surface of the mounting cover, the top surface of the mounting cover is provided with a control hole near the mounting groove, the control hole extends through the mounting groove, the piston cylinder is disposed in the mounting groove, the piston cylinder push rod is disposed in the control hole, the floating middle plate is disposed above the mounting cover, the bottom surface of the floating middle plate is provided with a positioning groove that matches the piston rod push rod near the control hole.
[0005] In a further embodiment of the above description, a limiting ring is provided above the floating middle plate, and first connecting holes are distributed along the edge of the top surface of the limiting ring. The top surface of the mounting cover is provided with a first mounting hole that matches the first connecting hole. The first connecting hole and the first mounting hole are threadedly connected by matching connecting bolts. A fixing hole is provided near the first connecting hole along the edge of the top surface of the mounting cover. The fixing hole extends toward the bottom surface of the base, and a fixing bolt is provided in the fixing hole. The fixing bolt is used to provide the effect of installation and fixation.
[0006] In a further embodiment of the above description, a boss is provided in the middle of the top surface of the floating middle plate, and a movable cover is provided above the floating middle plate. A connecting groove is provided on the top surface of the movable cover, and a socket is provided in the middle of the top surface of the boss and the middle of the bottom surface of the connecting groove. The socket can facilitate the connection between the floating middle plate and the movable cover.
[0007] In the above description, as a further embodiment, the bottom surface of the connecting groove is provided with second connecting holes distributed around the insertion position, and the top surface of the boss is provided with second mounting holes distributed around the insertion position. The second connecting holes and the second mounting holes are connected by a linkage bolt. The second connecting holes, the second mounting holes and the linkage bolt are used to provide the effect of the floating middle plate driving the movable cover to move.
[0008] In the above description, as a further embodiment, both ends of the top surface of the mounting cover are provided with embedding grooves, and a deceleration piston is fixedly installed in the embedding groove. The top surface of the deceleration piston is in contact with the bottom surface of the floating middle plate; the deceleration piston block can provide the effect of faster deceleration of the rotating shaft.
[0009] As a further embodiment of the above description, a connecting slot is provided on one side of the mounting cover, and both ends of the connecting slot are provided with openings for easy insertion.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the design of the piston cylinder and the floating middle plate, a positioning groove matching the push rod of the piston rod is opened on the bottom surface of the floating middle plate near the control hole. When the rotating shaft is returned to center, it is only necessary to open the piston cylinder. The piston cylinder drives the push rod to lift. When the positioning groove rotates with the floating middle plate to the area corresponding to the piston cylinder, the push rod of the piston cylinder penetrates into the positioning groove, realizing the effect of rotating shaft returning to center. Compared with the conventional use of torsion springs, this utility model uses a piston cylinder for returning to center, which not only has a more accurate returning effect, but also has a longer service life compared with torsion springs. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the rotating shaft return structure of this utility model;
[0012] Figure 2 This is an exploded view of the structure of Embodiment 1 of the rotating shaft return structure of this utility model;
[0013] Figure 3 This is an exploded view of the structure of Embodiment 1 of the rotating shaft return structure of this utility model from another perspective;
[0014] Figure 4 This is an exploded view of the structure of Embodiment 2 of the rotating shaft return structure of this utility model;
[0015] Figure 5This is an exploded view of the structure of Embodiment 2 of the rotating shaft return structure of this utility model from another perspective;
[0016] In the diagram: 1-base, 2-floating middle plate, 3-piston cylinder, 4-mounting cover, 5-mounting slot;
[0017] 6-Control hole, 7-Positioning groove, 8-Limit ring, 9-First connecting hole, 10-First mounting hole;
[0018] 11-Connecting bolt, 12-Fixing hole, 13-Fixing bolt, 14-Boss, 15-Modible cover;
[0019] 16-Connecting groove, 17-Socket position, 18-Second connecting hole, 19-Second mounting hole, 20-Linkage bolt;
[0020] 21-Connecting slot, 22-Opening position.
[0021] 101 - Embedded groove, 102 - Reduction piston. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0023] Example 1, please refer to Figures 1-3 The specific implementation of the shaft return structure includes a base 1 and a return assembly. The return assembly is installed on the top surface of the base 1. The return assembly includes a floating middle plate 2 and a piston cylinder 3. The top surface of the base 1 is provided with a mounting cover 4. The bottom surface of the mounting cover 4 has a mounting groove 5 that matches the piston cylinder 3. The mounting groove 5 extends toward the top surface of the mounting cover 4. The top surface of the mounting cover 4 near the mounting groove 5 has a control hole 6 that extends through the mounting groove 5. The piston cylinder 3 is set in the mounting groove 5. The push rod of the piston cylinder 3 is set in the control hole 6. The floating middle plate 2 is set above the mounting cover 4. The bottom surface of the floating middle plate 2 near the control hole 6 has a positioning groove 7 that matches the push rod of the piston rod.
[0024] A limiting ring 8 is provided above the floating middle plate 2. The edge of the top surface of the limiting ring 8 is provided with first connecting holes 9. The top surface of the mounting cover 4 is provided with a first mounting hole 10 that matches the first connecting hole 9. The first connecting hole 9 and the first mounting hole 10 are threadedly connected by matching connecting bolts 11. A fixing hole 12 is provided on the edge of the top surface of the mounting cover 4 near the first connecting hole 9. The fixing hole 12 extends toward the bottom surface of the base 1. A fixing bolt 13 is provided in the fixing hole 12.
[0025] A boss 14 is provided in the middle of the top surface of the floating middle plate 2, and a movable cover 15 is provided above the floating middle plate 2. A connecting groove 16 is provided on the top surface of the movable cover 15. An insertion position 17 is provided in the middle of the top surface of the boss 14 and the middle of the bottom surface of the connecting groove 16.
[0026] The bottom surface of the connecting groove 16 is surrounded by second connecting holes 18 near the socket position 17, and the top surface of the boss 14 is surrounded by second mounting holes 19 near the socket position 17. The second connecting holes 18 and the second mounting holes 19 are connected by a linkage bolt 20.
[0027] The mounting cover 4 has a connecting slot 21 on one side, and both ends of the connecting slot 21 have openings 22 for easy insertion.
[0028] The workflow of this embodiment is as follows: When the rotating shaft is being aligned and positioned, the piston cylinder 3 is activated. The piston cylinder 3 drives the push rod to lift the shaft. When the positioning groove 7 rotates with the floating middle plate 2 to the area corresponding to the piston cylinder 3, the push rod of the piston cylinder 3 extends into the positioning groove 7, thereby aligning the rotating shaft.
[0029] Example 2, please refer to Figures 4-5 The specific implementation of the shaft return structure differs from that of embodiment 1 in that: both ends of the top surface of the mounting cover 4 are provided with embedding grooves 101, and a deceleration piston 102 is fixedly installed in the embedding grooves 101, with the top surface of the deceleration piston 102 in contact with the bottom surface of the floating middle plate 2.
[0030] In this embodiment, the deceleration piston 102 can perform a return-to-center operation on the floating plate 2. When reducing its own rotation speed, the deceleration piston 102 can rub against the bottom surface of the floating plate 2 to provide a deceleration effect and improve the return-to-center speed.
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0032] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A shaft return structure, comprising a base and a return assembly, wherein the return assembly is mounted on the top surface of the base, characterized in that: The centering assembly includes a floating center plate and a piston cylinder. The top surface of the base is provided with a mounting cover. The bottom surface of the mounting cover has a mounting groove that matches the piston cylinder. The mounting groove extends toward the top surface of the mounting cover. The top surface of the mounting cover has a control hole near the mounting groove. The control hole extends through the mounting groove. The piston cylinder is placed in the mounting groove. The piston cylinder's push rod is placed in the control hole. The floating center plate is placed above the mounting cover. The bottom surface of the floating center plate has a positioning groove near the control hole that matches the piston cylinder's push rod.
2. The shaft return structure according to claim 1, characterized in that: A limiting ring is provided above the floating middle plate. A first connecting hole is distributed along the edge of the top surface of the limiting ring. A first mounting hole matching the first connecting hole is provided on the top surface of the mounting cover. The first connecting hole and the first mounting hole are threadedly connected by matching connecting bolts. A fixing hole is provided near the first connecting hole on the edge of the top surface of the mounting cover. The fixing hole extends toward the bottom surface of the base and a fixing bolt is provided in the fixing hole.
3. The shaft return structure according to claim 1, characterized in that: The floating middle plate has a boss in the middle of its top surface, a movable cover on top of the floating middle plate, a connecting groove on the top surface of the movable cover, and an insertion position in the middle of the top surface of the boss and the middle of the bottom surface of the connecting groove.
4. The shaft return structure according to claim 3, characterized in that: The bottom surface of the connecting groove has second connecting holes distributed around the socket, and the top surface of the boss has second mounting holes distributed around the socket. The second connecting holes and the second mounting holes are connected by a linkage bolt.
5. The shaft return structure according to claim 1, characterized in that: Both ends of the top surface of the mounting cover are provided with embedding grooves, and a deceleration piston is fixedly installed in the embedding groove. The top surface of the deceleration piston is in contact with the bottom surface of the floating middle plate.
6. The shaft return structure according to claim 1, characterized in that: The mounting cover has a connection slot on one side, and both ends of the connection slot have openings for easy insertion.