Automatic reset spring hinge facilitating accessory replacement
By designing a semi-circular worm gear and worm structure, the automatic reset spring hinge spring can be easily replaced, solving the problems of poor reset effect and high maintenance cost caused by spring deformation, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU JIANSEN HARDWARE CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-05
AI Technical Summary
The springs in existing automatic reset spring hinges are prone to deformation after long-term use, resulting in poor reset performance. They cannot be replaced individually, increasing maintenance costs.
A structure including a semi-circular worm gear and a worm is designed. By rotating the knob, the semi-circular worm gear drives the limiting plate to rotate, thereby releasing the restriction on the connector and allowing the spring to be disassembled and installed. Combined with the fixing of the pin and the limiting plate, the spring can be easily replaced.
This effectively avoids spring deformation affecting the reset effect, reduces maintenance costs, and allows for convenient spring replacement without replacing the entire component.
Smart Images
Figure CN224200455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spring hinge technology, and in particular to an automatic reset spring hinge that facilitates the replacement of parts. Background Technology
[0002] Fences and gates, serving as boundaries and decorations for outdoor spaces, are commonly found in courtyards, parks, and other locations. They are both aesthetically pleasing and practical. To enhance the user experience and ensure that the gate automatically resets and closes after being opened, preventing accidental intrusion and maintaining a clean environment, automatic reset spring hinges have emerged. Their built-in spring mechanism can drive the gate to close automatically when released, making them both convenient and safe, and thus an indispensable accessory for fences and gates.
[0003] However, springs are prone to deformation after long-term torsion, which affects the reset effect. Existing automatic reset spring hinges cannot replace the springs. When the spring is deformed, the entire component needs to be replaced, which increases maintenance costs. Therefore, we propose an automatic reset spring hinge that facilitates component replacement. Utility Model Content
[0004] The main objective of this invention is to provide an automatic reset spring hinge that facilitates the replacement of parts, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An automatic reset spring hinge with easy-to-replace parts includes a mounting base. The number of mounting bases is provided in two sets, and the two sets of mounting bases are symmetrical to each other. Support blocks are symmetrically fixedly installed on both sides of the mounting base.
[0007] Furthermore, a connector is movably connected to the inner wall of the mounting base, a first spring is fixedly installed on the outer surface of the connector, a rotating shaft is rotatably connected to the inner wall of the mounting base, a worm gear is fixedly installed at the tail end of the rotating shaft, and the tail end of the worm gear is rotatably connected to the inner wall of the mounting base, a knob is fixedly installed at the front end of the rotating shaft, a semi-circular worm gear is rotatably connected to the inner wall of the mounting base, a limit plate is fixedly installed on the inner wall of the semi-circular worm gear, a second spring is fixedly installed on the bottom wall of the rotating shaft, a pressing rod is fixedly connected to the front end of the second spring, a limit rod is symmetrically fixedly installed at the tail end of the pressing rod, a third spring is fixedly installed on the inner side wall of the limit rod, and a pin is fixedly connected to the front end of the third spring.
[0008] Furthermore, the worm gear meshes with the semi-circular worm wheel, the limiting plate is rotatably connected to the inner wall of the mounting base, the front end of the limiting rod is slidably engaged with the inner wall of the rotating shaft, the pin is slidably connected to the inner wall of the limiting rod, and the front end of the pin extends movably through to the outer side of the mounting base.
[0009] Furthermore, the inner wall of the support block is slidably connected to a slider, and multiple sets of sliders are provided. A pressing block is fixedly connected to the outer surface of the slider.
[0010] Furthermore, the front end of the pressing block is movably connected to the front end of the pin.
[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0012] In this invention, by setting a semi-circular worm gear and a worm, rotating the knob allows the semi-circular worm gear to rotate. When the semi-circular worm gear drives the limiting plate to rotate 180 degrees, the restriction on the connector is released, allowing the first spring to separate from the mounting base, thereby achieving the purpose of disassembling the first spring. This avoids the first spring deforming and affecting the reset effect, and eliminates the need to replace the entire component, effectively reducing maintenance costs. By setting a pin, when the pin is inserted into the rotating shaft and the mounting base, the mounting base and the rotating shaft can be fixed together. Then, with the cooperation of the worm, the limiting plate is fixed, preventing the connector from accidentally falling out of the mounting base. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an automatic reset spring hinge that facilitates the replacement of parts according to this utility model.
[0014] Figure 2 This is a cross-sectional view of the internal structure of the mounting base for an automatic reset spring hinge that facilitates the replacement of parts, according to this utility model.
[0015] Figure 3 This is a schematic diagram of the mounting base structure of an automatic reset spring hinge that facilitates the replacement of parts according to this utility model.
[0016] Figure 4 This utility model relates to an automatic reset spring hinge that facilitates the replacement of parts. Figure 3 Enlarged detail image of point A in the middle;
[0017] Figure 5 This is a side view of the mounting base for an automatic reset spring hinge that facilitates the replacement of parts according to this utility model.
[0018] Figure 6 This utility model relates to an automatic reset spring hinge that facilitates the replacement of parts. Figure 5 A magnified view of the details at point B;
[0019] Figure 7 This is a top view of the pressing rod of an automatic reset spring hinge that facilitates the replacement of parts according to this utility model.
[0020] In the diagram: 1. Mounting base; 101. Connector; 102. First spring; 103. Rotating shaft; 104. Worm gear; 105. Knob; 106. Semi-ring worm gear; 107. Limiting plate; 108. Second spring; 109. Pressing rod; 110. Limiting rod; 111. Third spring; 112. Pin; 2. Support block; 201. Slider; 202. Pressing block. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] Reference Figure 1-7 An automatic reset spring hinge with easy-to-replace parts includes a mounting base 1. The number of mounting bases 1 is set to two sets, and the two sets of mounting bases 1 are symmetrical to each other. Support blocks 2 are symmetrically fixed on both sides of the mounting base 1.
[0023] In a preferred embodiment, a connector 101 is movably connected to the inner wall of the mounting base 1, and a first spring 102 is fixedly installed on the outer surface of the connector 101. Two sets of mounting bases 1 and two sets of connectors 101 are symmetrically arranged at both ends of the connectors 101. A rotating shaft 103 is rotatably connected to the inner wall of the mounting base 1. Holes are symmetrically opened on both the rotating shaft 103 and the mounting base 1, and the holes are aligned to allow the pin 112 to pass through. A worm gear is fixedly installed at the tail end of the rotating shaft 103. The worm gear 104 is rotatably connected to the inner wall of the mounting base 1. A knob 105 is fixedly installed at the front end of the rotating shaft 103. The outer surface of the knob 105 is provided with anti-slip texture. Rotating the knob 105 will cause the rotating shaft 103 to rotate, thereby causing the worm gear 104 to rotate. A semi-circular worm wheel 106 is rotatably connected to the inner wall of the mounting base 1. A limit plate 107 is fixedly installed on the inner wall of the semi-circular worm wheel 106. When the semi-circular worm wheel 106 rotates, it can drive the limit plate 107 to rotate. The connecting head 101 rotates step by step. The diameter of the tail end of the connecting head 101 is equal to the diameter of the limiting plate 107, while the diameter of the front end of the connecting head 101 is larger than the diameter of the limiting plate 107. When the limiting plate 107 is above the connecting head 101, it can restrict the connecting head 101 within the mounting base 1. A second spring 108 is fixedly installed on the bottom wall of the rotating shaft 103. When the pressing rod 109 moves downward, it will compress the second spring 108. When the compressing force disappears, the second spring 108 can drive the pressing rod. 109 rebounds upwards. The front end of the second spring 108 is fixedly connected to the pressing rod 109. The tail end of the pressing rod 109 is symmetrically fixedly installed with a limiting rod 110. By setting the limiting rod 110, the stability of the pressing rod 109 moving up and down is effectively improved. The inner side wall of the limiting rod 110 is fixedly installed with a third spring 111. The front end of the third spring 111 is fixedly connected to a pin 112. When the pin 112 slides into the limiting rod 110, it will squeeze the third spring 111.
[0024] In a preferred embodiment, the worm 104 and the semi-annular worm wheel 106 mesh with each other. When the worm 104 is rotated, it can drive the semi-annular worm wheel 106 to rotate along the inner wall of the mounting base 1, thereby driving the limiting plate 107 to rotate. The limiting plate 107 is rotatably connected to the inner wall of the mounting base 1. The front end of the limiting rod 110 is slidably engaged with the inner wall of the rotating shaft 103. When the pressing rod 109 moves up and down, it can drive the limiting rod 110 to slide synchronously along the inner wall of the rotating shaft 103. The pin 112 is slidably connected to the inner wall of the limiting rod 110. The front end of the pin 112 moves through to the outer side of the mounting base 1. When the pin 112 slides out from the limiting rod 110 and passes through the inner wall of the rotating shaft 103 until it reaches the outer side of the mounting base 1, it can fix the rotating shaft 103 and the mounting base 1 together.
[0025] By pushing the pin 112, the pin 112 compresses the third spring 111. When the pin 112 is fully inserted into the limiting rod 110, the fixation between the mounting base 1 and the rotating shaft 103 is released, allowing the rotating shaft 103 to rotate within the mounting base 1. The second spring 108 then releases its potential energy and rebounds upwards, thereby causing the limiting rod 110 and the pressing rod 109 to move upwards. Subsequently, the connector 101 is lifted upwards, so that its upper end face fits against the inner wall of the limiting plate 107. At this time, there is a gap between the lower end face of the connector 101 and the inner wall of the mounting base 1, and the size of the gap is sufficient for passage. The limiting plate 107 is then rotated, followed by the knob 105, causing the rotating shaft 103 and worm gear 104 to rotate. This causes the semi-circular worm gear 106 and the limiting plate 107 to rotate along the inner wall of the mounting base 1. When the limiting plate 107 and the second spring 108 have rotated 180 degrees, the restriction of the semi-circular worm gear 106 and the limiting plate 107 on the connector 101 is completely released. Then, the connector 101 is lifted upwards to remove it from the mounting base 1, thereby separating one end of the first spring 102 from the mounting base 1. Repeating the above operation allows the other end of the first spring 102 to connect with another set of mounting bases. The mounting base 1 is separated, thereby achieving the purpose of disassembling the first spring 102 for easy replacement. This avoids the first spring 102 being deformed and affecting the reset effect, and eliminates the need to replace the entire component, effectively reducing maintenance costs. When installing the first spring 102, the connectors 101 connected to both ends of the first spring 102 are respectively inserted into the mounting base 1. Then, the two knobs 105 are rotated in opposite directions, causing the limiting plate 107 and the semi-circular worm gear 106 to rotate 180 degrees in the opposite direction, thus sealing the opening of the mounting base 1 and restricting the connectors 101 between the limiting plate 107 and the mounting base 1. Between the seats 1, press down on the pressing rod 109, causing the limiting rod 110 to slide down along the inner wall of the rotating shaft 103. When the limiting rod 110 slides down and aligns with the hole on the rotating shaft 103, the pressure of the third spring 111 disappears, which in turn causes the pin 112 to rebound, allowing the pin 112 to pass from the rotating shaft 103 to the outside of the mounting seat 1, thereby fixing the mounting seat 1 and the rotating shaft 103 together to prevent the rotating shaft 103 from rotating accidentally. Then, with the cooperation of the worm gear 104 and the semi-circular worm wheel 106, the limiting plate 107 is fixed in place, thus completing the installation of the first spring 102.
[0026] In a preferred embodiment, a slider 201 is slidably connected to the inner wall of the support block 2, and multiple sets of sliders 201 are provided. A pressing block 202 is fixedly connected to the outer surface of the slider 201.
[0027] In a preferred embodiment, the front end of the pressing block 202 is movably connected to the front end of the pin 112.
[0028] The height and width of the pressing block 202 are both smaller than the diameter of the pin 112, allowing it to smoothly enter the mounting base 1 and the rotating shaft 103. When the pressing block 202 is pushed, it can squeeze the pin 112 into the mounting base 1. When the slider 201 in the middle of the pressing block 202 is in contact with the mounting base 1, the pin 112 is just fully inserted into the limiting rod 110, which allows the pressing rod 109 to slide upward smoothly with the cooperation of the second spring 108. Then the pressing block 202 is pulled out from the mounting base 1 to avoid affecting the rotation of the rotating shaft 103.
[0029] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications 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 application.
Claims
1. An automatic return spring hinge with easily replaceable parts, characterized in that: It includes a mounting base (1), and the number of mounting bases (1) is set in two sets. The two sets of mounting bases (1) are symmetrical to each other, and support blocks (2) are symmetrically fixed on both sides of the mounting base (1).
2. The automatic reset spring hinge for easy replacement of parts according to claim 1, characterized in that: A connector (101) is movably connected to the inner wall of the mounting base (1). A first spring (102) is fixedly installed on the outer surface of the connector (101). A rotating shaft (103) is rotatably connected to the inner wall of the mounting base (1). A worm gear (104) is fixedly installed at the tail end of the rotating shaft (103), and the tail end of the worm gear (104) is rotatably connected to the inner wall of the mounting base (1). A knob (105) is fixedly installed at the front end of the rotating shaft (103). A semi-circular worm gear is rotatably connected to the inner wall of the mounting base (1). (106) A limiting plate (107) is fixedly installed on the inner wall of the semi-ring worm gear (106). A second spring (108) is fixedly installed on the bottom wall of the rotating shaft (103). A pressing rod (109) is fixedly connected to the front end of the second spring (108). A limiting rod (110) is symmetrically fixedly installed at the tail end of the pressing rod (109). A third spring (111) is fixedly installed on the inner side wall of the limiting rod (110). A pin (112) is fixedly connected to the front end of the third spring (111).
3. The automatic reset spring hinge for easy replacement of parts according to claim 2, characterized in that: The worm (104) meshes with the semi-ring worm wheel (106), the limiting plate (107) is rotatably connected to the inner wall of the mounting base (1), the front end of the limiting rod (110) is slidably engaged with the inner wall of the rotating shaft (103), the pin (112) is slidably connected to the inner wall of the limiting rod (110), and the front end of the pin (112) moves through to the outer side of the mounting base (1).
4. The automatic reset spring hinge for easy replacement of parts according to claim 1, characterized in that: The inner wall of the support block (2) is slidably connected to a slider (201), and the number of sliders (201) is set to multiple sets. The outer surface of the slider (201) is fixedly connected to a pressing block (202).
5. The automatic reset spring hinge for easy replacement of parts according to claim 4, characterized in that: The front end of the pressing block (202) is movably connected to the front end of the pin (112).