Hinge structure capable of limiting rotation angle
By introducing an angle limiting plate and a limiting rod into the hinge structure, combined with the design of a collar and a return spring, the problem of the inability of traditional hinges to precisely control the rotation angle is solved, realizing flexible adjustment and stable limiting of the hinge, and improving the applicability of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-06
AI Technical Summary
Traditional hinge structures cannot achieve precise and flexible adjustment of rotation angle, and cannot meet personalized usage needs.
By introducing an angle limiting plate, a limiting rod, and a rod positioning assembly into the hinge structure, the rotation angle is limited by the insertion of the limiting rod into the positioning hole, and stable limiting is achieved through the cooperation of a collar and a return spring.
It enables flexible adjustment and stable limiting of the rotation angle of the hinge structure, meets diverse usage needs, and improves the functionality and applicability of the product.
Smart Images
Figure CN223975019U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hinge technology, specifically to a hinge structure with a limited rotation angle. Background Technology
[0002] In traditional hinge applications, most hinges can only achieve simple rotation of objects, and the rotation angle cannot be precisely and flexibly adjusted. For example, common door and window hinges often have a fixed opening angle within a few ranges, making it difficult to personalize them according to actual ventilation needs, space constraints, and other factors. In the design of some special equipment or furniture, precise control of the rotation angle of components is crucial, but traditional hinge structures cannot meet such diverse angle adjustment requirements, severely limiting the functionality and applicability of the product. Utility Model Content
[0003] The purpose of this invention is to provide a hinge structure with a limited rotation angle to solve the problems mentioned in the background art.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A hinge structure with a limited rotation angle includes a fixed base, a central shaft rotatably connected to the inner wall of the fixed base, and a rotating rod seat fixedly connected to the center of the bottom surface of the central shaft.
[0006] An angle limiting plate is fixedly connected to the side of the fixed base near the bottom. The side of the angle limiting plate has a number of positioning holes. The inner walls of the positioning holes are respectively inserted into the first limiting rod and the second limiting rod. The back of the fixed base is provided with a rod positioning assembly for auxiliary positioning of the first limiting rod and the second limiting rod.
[0007] A further improvement of this utility model is that the first limiting rod and the second limiting rod are respectively distributed on both sides of the central axis.
[0008] A further improvement of the present invention is that the insertion rod positioning assembly includes a first collar and a second collar, which are respectively sleeved together.
[0009] A further improvement of this utility model is that: a built-in insert plate is fixedly connected to one side of the first collar, and a mounting frame is fixedly connected to one side of the second collar, with the built-in insert plate inserted into the inner wall of the mounting frame.
[0010] A further improvement of this utility model is that: the inner wall of the mounting frame is provided with a guide groove, the outer wall of the built-in insert plate is slidably connected to the inner wall of the guide groove, one end of the built-in insert plate is fixedly connected to a return spring, and the other end of the return spring is fixedly connected to the inner wall of the mounting frame.
[0011] A further improvement of the present invention is that: a positioning ring is fixedly connected to one end of the first limiting rod, and a rod limiting groove is provided at the other end of the first limiting rod.
[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0013] This utility model provides a hinge structure that can limit the rotation angle. By inserting the first limiting rod and the second limiting rod into different positioning holes on the angle limiting plate, the rotation angle of the rotating rod seat is limited by the distance between the first limiting rod and the second limiting rod. Since the positioning holes are distributed in a ring, the rotation angle range of the rotating rod seat can be flexibly adjusted by changing the positioning holes into which the two rods are inserted, so as to meet different usage requirements.
[0014] This utility model provides a hinge structure that can limit the rotation angle. The first and second rings in the rod positioning assembly are respectively sleeved with the first and second limiting rods. Through the cooperation of the built-in insert plate, mounting frame, guide groove and return spring, when the first and second rings are sleeved on the limiting rods, they can be locked into the rod limiting groove under the return force of the return spring, limiting the first and second limiting rods. This effectively ensures the firmness of the first and second limiting rods after they are inserted, and thus ensures the stability of the entire hinge structure's function of limiting the rotation angle. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the insertion rod positioning assembly of this utility model;
[0018] Figure 4 This is a schematic diagram of the first limiting rod structure of this utility model.
[0019] In the diagram: 1. Fixed base; 2. Rotating rod base; 3. Central shaft; 4. Angle limiting plate; 5. Positioning insertion hole; 6. First limiting insertion rod; 7. Second limiting insertion rod; 8. Insertion rod positioning assembly; 9. First collar; 10. Second collar; 11. Mounting frame; 12. Internal insertion plate; 13. Return spring; 14. Guide groove; 15. Insertion rod limiting groove; 16. Positioning ring. Detailed Implementation
[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.
[0021] The present invention will be further described in detail below with reference to embodiments:
[0022] Example 1
[0023] like Figure 1-4 As shown, this utility model provides a hinge structure with a limited rotation angle, including a fixed base 1, a central shaft 3 rotatably connected to the inner wall of the fixed base 1, and a rotating rod seat 2 fixedly connected to the center of the bottom surface of the central shaft 3.
[0024] An angle limiting disc 4 is fixedly connected to the side of the fixed base 1 near its bottom. The side of the angle limiting disc 4 has a number of positioning holes 5. The inner walls of these positioning holes 5 are respectively fitted with a first limiting rod 6 and a second limiting rod 7. The back of the fixed base 1 is provided with a rod positioning assembly 8 for auxiliary positioning of the first limiting rod 6 and the second limiting rod 7. The positioning holes 5 are arranged in a ring with equal angular intervals around the center of the angle limiting disc 4. The angle limiting disc 4 has a 360° circumference and 36 positioning holes 5. Therefore, the central angle between two adjacent positioning holes 5 is 10°, which can meet various fine angle adjustment needs.
[0025] The first limiting rod 6 and the second limiting rod 7 are respectively distributed on both sides of the central shaft 3. The center of the bottom surface of the rotating rod seat 2 has a mounting hole that matches the central shaft 3. The central shaft 3 is securely fixed to the rotating rod seat 2 by interference fit or by using fastening bolts, ensuring that there is no relative displacement between the two during rotation, thus stably transmitting the rotational motion. The corresponding angle value can be marked on the surface of the angle limiting disc 4 at the position of each positioning hole 5. This allows the user to intuitively select the appropriate positioning hole 5 according to their needs during operation, insert the first limiting rod 6 and the second limiting rod 7, and quickly complete the setting of the rotation angle.
[0026] Example 2
[0027] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the insertion rod positioning assembly 8 includes a first collar 9 and a second collar 10, which are respectively sleeved together.
[0028] The first ring 9 is fixedly connected to one side with an internal insert plate 12, and the second ring 10 is fixedly connected to one side with an installation frame 11. The internal insert plate 12 is inserted into the inner wall of the installation frame 11.
[0029] The inner wall of the mounting frame 11 is provided with a guide groove 14. The outer wall of the built-in insert plate 12 is slidably connected to the inner wall of the guide groove 14. One end of the built-in insert plate 12 is fixedly connected to a return spring 13, and the other end of the return spring 13 is fixedly connected to the inner wall of the mounting frame 11. In practical applications, if the maximum distance between the first limiting insert 6 and the second limiting insert 7 is 50mm, and the required return force is 10N, after calculation and experimental verification, a return spring 13 with an elastic coefficient of 0.2N / mm can be selected to ensure that the first ring 9 and the second ring 10 can be reliably pulled back and locked into the insert rod limiting groove 15 under various working conditions.
[0030] One end of the first limiting rod 6 is fixedly connected to a positioning ring 16, and the other end of the first limiting rod 6 is provided with a rod limiting groove 15.
[0031] The working principle of this hinge structure with a limited rotation angle will be explained in detail below.
[0032] like Figure 1-4 As shown, in use, when it is necessary to rotate an object connected to the rotating rod seat 2, the rotating rod seat 2 rotates relative to the fixed seat 1 via the central shaft 3. When it is necessary to change the rotation angle of the rotating rod seat 2, the first limiting rod 6 and the second limiting rod 7 are inserted into the corresponding positioning holes 5. The distance between the first limiting rod 6 and the second limiting rod 7 can limit the rotation angle of the rotating rod seat 2.
[0033] Since the positioning holes 5 are arranged in a ring on the angle limiting disk 4, when the first limiting rod 6 is fixed, the angle range formed between the line connecting the first limiting rod 6 and the center point of the angle limiting disk 4, and the line connecting the second limiting rod 7 and the center point of the angle limiting disk 4, is the range that the rotating rod seat 2 can rotate, thus achieving the purpose of adjusting the rotation angle.
[0034] After the first limiting rod 6 and the second limiting rod 7 are installed in place, the first collar 9 and the second collar 10 can be respectively sleeved onto the first limiting rod 6 and the second limiting rod 7.
[0035] When the first limiting rod 6 and the second limiting rod 7 are at their furthest apart, the first collar 9 can be pulled, causing it to stretch through the built-in insert plate 12 and drive the return spring 13. This allows the distance between the second collar 10 and the first collar 9 to match the distance between the first limiting rod 6 and the second limiting rod 7. When the first collar 9 and the second collar 10 are respectively fitted onto one end of the first limiting rod 6 and the second limiting rod 7, they will be pulled into the rod limiting groove 15 by the return force of the return spring 13. This limits the first limiting rod 6 and the second limiting rod 7, ensuring the firmness of the first limiting rod 6 and the second limiting rod 7 after insertion.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The present invention has been described in detail above, but modifications or improvements can be made based on it, which will be apparent to those skilled in the art. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A hinge structure capable of defining a rotation angle, comprising a fixed seat (1), characterized in that: The inner wall of the fixed seat (1) is rotationally connected with a central shaft (3), and the bottom surface center of the central shaft (3) is fixedly connected with a rotating rod seat (2); The side surface close to the bottom end of the fixed seat (1) is fixedly connected with an angle limiting disc (4), a plurality of positioning insertion holes (5) are formed in the side surface of the angle limiting disc (4), the inner walls of the plurality of positioning insertion holes (5) are respectively correspondingly inserted with first limiting insertion rods (6) and second limiting insertion rods (7), and the back surface of the fixed seat (1) is provided with an insertion rod positioning assembly (8) for assisting in positioning the first limiting insertion rods (6) and the second limiting insertion rods (7).
2. The hinge structure of claim 1, wherein: The first limiting insertion rods (6) and the second limiting insertion rods (7) are respectively distributed on both sides of the central shaft (3).
3. The hinge structure of claim 1, wherein: The insertion rod positioning assembly (8) comprises first and second sleeve rings (9) and (10), which are respectively sleeved.
4. A hinge structure capable of limiting the angle of rotation according to claim 3, characterized in that: One side of the first sleeve ring (9) is fixedly connected with an embedded insertion plate (12), one side of the second sleeve ring (10) is fixedly connected with a mounting frame (11), and the embedded insertion plate (12) is inserted into the inner wall of the mounting frame (11).
5. A hinge structure capable of limiting the angle of rotation according to claim 4, characterized in that: The inner wall of the mounting frame (11) is provided with a guide sliding groove (14), the outer wall of the embedded insertion plate (12) is slidably connected with the inner wall of the guide sliding groove (14), one end of the embedded insertion plate (12) is fixedly connected with a return spring (13), and the other end of the return spring (13) is fixedly connected with the inner wall of the mounting frame (11).
6. The hinge structure of claim 1, wherein: One end of the first limiting insertion rod (6) is fixedly connected with a positioning ring (16), and the other end of the first limiting insertion rod (6) is provided with an insertion rod limiting groove (15).