Constant force push-pull coil spring

Abstract

The utility model relates to spring technology field discloses a constant force push -and -pull ware spring, including upper portion mounting shell, the top inner wall fixed connection of upper portion mounting shell has the second positioning bolt, the bottom of upper portion mounting shell is provided with bottom mounting shell, the bottom inner wall fixed connection of bottom mounting shell has second limit shell, the inside of bottom mounting shell is provided with sealing ring, the utility model discloses through upper portion mounting shell and bottom mounting shell inside first rotating disc, second rotating disc and the linkage of rotating column, cooperate the winding and the expansion of spring, drive the storage and release of elastic potential, the limiting effect of first positioning bolt, second positioning bolt and first limit shell, second limit shell simultaneously, ensure the stability of spring deformation process to realize the smooth transmission of force when the device is stressed and resets, reduce the energy loss due to the part shaking, improve the transmission efficiency and work stability.

Description

Technical Field

[0001] This utility model relates to the field of coil spring technology, and in particular to a constant force push-pull coil spring. Background Technology

[0002] With the continuous development of industrial automation and precision manufacturing technology, constant force push-pull coil springs, as a key mechanical component, are gradually demonstrating their unique technical value and application potential. Based on the principle of energy storage through deformation of elastic materials, these coil springs achieve dynamic balance of output torque during stretching or compression through special structural design, providing innovative solutions for various scenarios that require stable force application.

[0003] In traditional devices, rotating components are prone to misalignment and wobbling during spring deformation and force transmission, leading to unstable storage and release of elastic potential energy. This not only causes severe energy loss and a significant reduction in transmission efficiency, but also causes device vibration due to force imbalance, making it difficult to achieve stable constant force output. Furthermore, external dust and impurities can easily penetrate the internal transmission parts during use, accelerating wear on the spring and rotating components. This results in insufficient overall sealing and integrity of the device, shortening the lifespan of the spring and the entire device. Additionally, component wear and structural loosening lead to decreased accuracy in constant force output, making it unsuitable for applications requiring stability and durability, thus greatly limiting its applicability and user experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a constant force push-pull device coil spring.

[0005] This utility model is achieved using the following technical solution: a constant force push-pull coil spring, including an upper mounting shell, a second positioning pin fixedly connected to the top inner wall of the upper mounting shell, a bottom mounting shell provided at the bottom of the upper mounting shell, a second limiting shell fixedly connected to the bottom inner wall of the bottom mounting shell, a sealing ring provided inside the bottom mounting shell, and a coil spring provided at the bottom of the upper mounting shell.

[0006] As a further improvement to the above solution, a first reserved hole is provided inside the upper mounting shell, and a first positioning pin is fixedly connected to the top inner wall of the upper mounting shell.

[0007] Through the above technical solution, the first reserved hole in the upper mounting shell provides the mounting base for subsequent connecting components, while the first positioning pin and the second positioning pin provide positioning support for the limiting structure, laying the foundation for the subsequent stable limiting of components and helping to ensure the stability of the overall structure of the device.

[0008] As a further improvement to the above solution, the upper mounting shell is rotatably connected to a first rotating disk, the bottom mounting shell is provided with a second reserved hole, and the bottom inner wall of the upper mounting shell is fixedly connected to a first limiting shell.

[0009] Through the above technical solution, the rotational connection between the first rotating disk and the upper mounting shell, the second reserved hole in the bottom mounting shell, and the setting of the first limiting shell enable the rotating component to operate flexibly and provide a matching structure for subsequent operation, promoting the coordination of rotation and limiting, and improving the smoothness of the transmission process.

[0010] As a further improvement to the above solution, the first positioning pin is inserted into the inside of the first limiting shell, and the second positioning pin is inserted into the inside of the second limiting shell.

[0011] Through the above technical solution, the insertion and engagement of the first positioning pin with the first limiting shell and the second positioning pin with the second limiting shell form a stable limiting structure, which effectively limits the offset of the rotating parts, ensures the stability of the spring deformation process, reduces energy loss in force transmission, and improves transmission efficiency.

[0012] As a further improvement to the above solution, a second rotating disk is rotatably connected inside the bottom mounting shell, and a rotating column is fixedly connected to the top of the second rotating disk, with the first rotating disk sleeved on the outside of the rotating column.

[0013] Through the above technical solution, the rotational connection between the second rotating disk and the bottom mounting shell, the fixing of the rotating column to the second rotating disk and the sleeve connection with the first rotating disk, realize the linkage of the upper and lower rotating components, provide a power transmission path for the winding and unfolding of the coil spring, and ensure the smooth storage and release of elastic potential energy.

[0014] As a further improvement to the above solution, the bottom mounting shell has an internal mounting groove, the sealing ring is fixedly connected inside the mounting groove, and the coil spring is fixedly connected outside the rotating column.

[0015] Through the above technical solution, the installation groove fixes the sealing ring, realizing the sealing function of the device and preventing the intrusion of external impurities. The fixation of the rotating column and the coil spring is directly related to the conversion of elastic potential energy, protecting the internal components, reducing wear, and helping to extend the life of the device.

[0016] As a further improvement to the above solution, the end of the coil spring away from the rotating column is fixedly connected to the outside of the second limiting housing, a hexagonal bolt is inserted into the inside of the first reserved hole, and a nut is connected to the external thread of the hexagonal bolt.

[0017] Through the above technical solution, the fixing of the coil spring and the second limiting shell ensures the stability of the force when the coil spring is deformed. The hexagonal bolt and nut are fastened to the upper and lower shells through the connection of the first reserved hole, which improves the integrity and sealing of the overall structure, ensures the accuracy of constant force output, and enhances the adaptability of the scene.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes the linkage between the upper mounting shell and the first rotating disk, second rotating disk, and rotating column within the bottom mounting shell. This, combined with the winding and unwinding of the coil spring, enables the storage and release of elastic potential energy. Simultaneously, the limiting action of the first and second positioning pins, along with the first and second limiting shells, ensures the stability of the coil spring's deformation process. This achieves smooth force transmission during loading and unloading, reducing energy loss due to component vibration and improving transmission efficiency and operational stability.

[0019] This invention utilizes the sealing ring within the mounting groove to prevent external dust and impurities from entering the internal structure. Combined with hexagonal bolts and nuts that securely connect the upper and lower mounting shells through the first and second pre-drilled holes, it enhances the overall sealing and integrity of the device. This effectively protects the coil spring and rotating components, reduces the wear rate of parts, extends the device's service life, ensures the accuracy of constant force output, and enhances adaptability in various application scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an exploded view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the upper mounting shell portion of this utility model; Figure 5 This is a schematic diagram of the bottom mounting shell portion of this utility model; Figure 6 This is a schematic diagram of the coil spring part of this utility model; Explanation of key symbols: 1. Upper mounting housing; 2. First reserved hole; 3. First positioning pin; 4. Second positioning pin; 5. First rotating disk; 6. Bottom mounting housing; 7. Second reserved hole; 8. First limiting housing; 9. Second limiting housing; 10. Second rotating disk; 11. Rotating column; 12. Mounting groove; 13. Sealing ring; 14. Coil spring; 15. Hex bolt; 16. Nut. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Example: Please combine Figure 1-6 A constant force push-pull coil spring according to this embodiment includes an upper mounting shell 1, a second positioning pin 4 fixedly connected to the top inner wall of the upper mounting shell 1, a bottom mounting shell 6 provided at the bottom of the upper mounting shell 1, a second limiting shell 9 fixedly connected to the bottom inner wall of the bottom mounting shell 6, a sealing ring 13 provided inside the bottom mounting shell 6, and a coil spring 14 provided at the bottom of the upper mounting shell 1.

[0023] The upper mounting housing 1 has a first reserved hole 2 inside, and a first positioning pin 3 is fixedly connected to the top inner wall of the upper mounting housing 1.

[0024] The upper mounting housing 1 is rotatably connected to a first rotating disk 5, the bottom mounting housing 6 is provided with a second reserved hole 7, and the bottom inner wall of the upper mounting housing 1 is fixedly connected to a first limiting housing 8.

[0025] The first positioning pin 3 and the second positioning pin 4 are respectively inserted into the first limiting housing 8 and the second limiting housing 9, which not only limits the offset of the rotating parts, but also provides a stable support reference for the deformation of the coil spring 14.

[0026] The first positioning pin 3 is inserted into the inside of the first limiting housing 8, and the second positioning pin 4 is inserted into the inside of the second limiting housing 9.

[0027] The bottom housing 6 is rotatably connected to a second rotating disk 10. The top of the second rotating disk 10 is fixedly connected to a rotating column 11. The first rotating disk 5 is sleeved on the outside of the rotating column 11.

[0028] The bottom mounting housing 6 has an internal mounting groove 12, a sealing ring 13 is fixedly connected inside the mounting groove 12, and a coil spring 14 is fixedly connected to the outside of the rotating column 11.

[0029] When an external force drives the rotating column 11, the first rotating disk 5 or the second rotating disk 10 rotates relative to the upper mounting housing 1 and the bottom mounting housing 6. The coil spring 14, which is fixedly connected to the rotating column 11, will coil or unwind accordingly. At the same time, the sealing ring 13 is fixed in the bottom mounting housing 6 through the mounting groove 12, effectively preventing external dust and impurities from entering the internal transmission structure and ensuring that the fitting accuracy between the coil spring 14 and the rotating column 11 is not affected.

[0030] The end of the coil spring 14 away from the rotating column 11 is fixedly connected to the outside of the second limiting housing 9. A hexagonal bolt 15 is inserted into the inside of the first reserved hole 2, and a nut 16 is threaded onto the outside of the hexagonal bolt 15.

[0031] The implementation principle of a constant force push-pull device coil spring in this embodiment is as follows: When an external force drives the rotating column 11, the first rotating disk 5 or the second rotating disk 10 rotates relative to the upper mounting shell 1 and the bottom mounting shell 6. The coil spring 14, which is fixedly connected to the rotating column 11, will coil or unwind accordingly. The first positioning pin 3 and the second positioning pin 4 are respectively inserted into the first limiting shell 8 and the second limiting shell 9, which not only limits the offset of the rotating component, but also provides a stable support reference for the deformation of the coil spring 14. At the same time, the sealing ring 13 is fixed in the bottom mounting shell 6 through the mounting groove 12, which effectively prevents external dust and impurities from entering the internal transmission structure, ensuring that the fitting accuracy between the coil spring 14 and the rotating column 11 is not affected. In this process, the coil spring 14 converts the external force into elastic potential energy and stores it by virtue of its own elastic characteristics. The synergistic effect of the limiting structure and the sealing structure makes the force conversion process smoother, avoids energy loss caused by component shaking, and significantly improves the transmission stability and durability of the device. When the external force disappears, the elastic potential energy stored in the coil spring 14 will be released in the opposite direction, pushing the rotating column 11 to drive the first rotating disk 5 and the second rotating disk 10 to reset. At the same time, the hexagonal bolt 15 and the nut 16 securely lock the upper mounting shell 1 and the bottom mounting shell 6 through the first reserved hole 2 and the second reserved hole 7, ensuring the integrity of the entire device structure, so that the thrust or pull generated during the reset process can be evenly transmitted, achieving the effect of constant force output.

[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A constant force push-pull coil spring, characterized in that, The upper mounting housing (1) is provided with a second positioning pin (4) fixedly connected to the top inner wall of the upper mounting housing (1), a bottom mounting housing (6) is provided at the bottom of the upper mounting housing (1), a second limiting housing (9) is fixedly connected to the bottom inner wall of the bottom mounting housing (6), a sealing ring (13) is provided inside the bottom mounting housing (6), and a coil spring (14) is provided at the bottom of the upper mounting housing (1).

2. The constant force push-pull coil spring as described in claim 1, characterized in that: The upper mounting shell (1) has a first reserved hole (2) inside, and the top inner wall of the upper mounting shell (1) is fixedly connected with a first positioning pin (3).

3. The constant force push-pull coil spring as described in claim 1, characterized in that: The upper mounting shell (1) is rotatably connected to a first rotating disk (5), the bottom mounting shell (6) is provided with a second reserved hole (7), and the bottom inner wall of the upper mounting shell (1) is fixedly connected to a first limiting shell (8).

4. A constant force push-pull coil spring as described in claim 2, characterized in that: The first positioning pin (3) is inserted into the inside of the first limiting shell (8), and the second positioning pin (4) is inserted into the inside of the second limiting shell (9).

5. A constant force push-pull coil spring as described in claim 3, characterized in that: The bottom mounting shell (6) is rotatably connected to a second rotating disk (10), and a rotating column (11) is fixedly connected to the top of the second rotating disk (10). The first rotating disk (5) is sleeved on the outside of the rotating column (11).

6. A constant force push-pull coil spring as described in claim 2, characterized in that: The bottom mounting housing (6) has an internal mounting groove (12), the sealing ring (13) is fixedly connected inside the mounting groove (12), and the coil spring (14) is fixedly connected outside the rotating column (11).

7. A constant force push-pull coil spring as described in claim 6, characterized in that: The end of the coil spring (14) away from the rotating column (11) is fixedly connected to the outside of the second limiting shell (9). A hexagonal bolt (15) is inserted into the inside of the first reserved hole (2), and a nut (16) is threaded onto the outside of the hexagonal bolt (15).

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