A timer head wheel hanging strip structure

Abstract

The utility model relates to a timer head wheel hanging strip structure, including pivot, head wheel and clockwork hook, head wheel installs on the axle body of pivot, and the axial one side of head wheel is equipped with the convex block for installing clockwork hook, and the outer peripheral wall of convex block is the variable radius curve shape in the clockwise rotating direction side of pivot drive clockwork hook, and the space interval A between the inner side of hook block of clockwork hook and the outer peripheral wall of convex block gradually expands, and the space interval A corresponds with the strip hook of clockwork installed on head wheel, and when pivot drives clockwork hook clockwise, the one side of hook block of clockwork hook is hooked with the strip hook of clockwork, the utility model has the advantages that compared with the prior art, through the outer peripheral wall of convex block is variable radius curve shape, makes the space interval A between the inner side of hook block of clockwork hook and the outer peripheral wall of convex block gradually expand, has more space, can more reliably hook the strip hook of clockwork, greatly improves the reliability in the process of hooking and increases the hooking space of each other.

Description

Technical Field

[0001] This utility model belongs to the field of timer technology, and in particular relates to a timer head wheel hanging bar structure. Background Technology

[0002] There are many different types of timers. Currently, the working principle of a spring-loaded timer on the market is that a mainspring provides power, a gear transmission mechanism changes speed, and a timing trigger device sends signals to control the circuit's on / off state or to emit an audible alert. Specifically, the mainspring winding up provides power to the entire system. When the mainspring unwinds, the gear transmission mechanism changes speed, increasing the number of rotations when the mainspring is relaxed. At the end of the gear train are an escape wheel, escape pawl, and hairspring, ensuring that the gear train rotates at a constant speed driven by the mainspring. However, in existing spring-loaded timers, the mainspring is hooked to a headwheel. While the mainspring is a standardized product, the existing headwheel design has a relatively small space between the mainspring hook and the headwheel, resulting in less reliable hooking. Occasionally, the mainspring may disengage during the hooking process. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a timer head wheel hanging bar structure that greatly improves the reliability of the hooking process and increases the hooking space.

[0004] The purpose of this utility model is achieved through the following technical solution: This timer head wheel winding structure includes a rotating shaft, a head wheel, and a spring hook; the head wheel is mounted on the shaft of the rotating shaft, and a protrusion for mounting the spring hook is provided on one axial side of the head wheel. On the side where the rotating shaft drives the spring hook to rotate clockwise, the outer peripheral wall of the protrusion is a variable radius curve, and the spatial distance A between the inner side of the hook block of the spring hook and the outer peripheral wall of the protrusion gradually increases. The spatial distance A corresponds to the spring hook mounted on the head wheel, and when the rotating shaft drives the spring hook to rotate clockwise, one side of the hook block of the spring hook hooks with the spring hook.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by setting the outer peripheral wall of the protrusion block as a variable radius curve, the spatial distance A between the inner side of the hook block of the spring hook and the outer peripheral wall of the protrusion block gradually increases, providing more space and enabling more reliable hooking of the spring hook, which greatly improves the reliability of the hooking process and increases the mutual hooking space.

[0006] Preferably, the outer peripheral wall of the protrusion has a notch, and the inner peripheral wall has a support ring. The spring hook is placed on the support ring and fixed in the protrusion by a retaining ring, and the hook block of the spring hook is embedded in the notch. With the above structure, the spring hook can move with the rotating shaft, the consistency of the movement is better, and the disassembly and assembly are more convenient.

[0007] Preferably, the outer peripheral wall of the protrusion is a variable radius curve. Along the clockwise direction of the mainspring hook, the wall thickness of one half of the outer peripheral wall of the protrusion gradually increases, while the wall thickness of the other half remains constant. When the mainspring hook rotates clockwise, the hooking space between the hook block and the mainspring's hook is larger, and the gradually increasing wall thickness of one half of the outer peripheral wall of the protrusion results in better fit during hooking. Since the mainspring's hook is in close contact with the outer peripheral wall of the protrusion in the relaxed state, the above structural design improves the stability of the hooking process and greatly enhances reliability.

[0008] Preferably, the inner circumferential wall of the protrusion is a perfect circle; the above structure ensures that the rotation of the shaft and the spring hook is in a perfect circle, thus ensuring the accuracy of the timer.

[0009] Preferably, a damping element is installed on the other side of the head wheel along its axial direction. The damping element is fixed by the limiting and fixing block, which is fixed on the rotating shaft. By installing the damping element, its damping characteristics are used to reduce mechanical vibration and dissipate kinetic energy, thereby ensuring the stability and accuracy of the timer.

[0010] Preferably, a first limiting block is provided on the outer peripheral wall of the damping member, and a second limiting block is provided on the inner side wall of the head wheel that abuts against the limiting block, and the cross-section of the damping block is arched; the above structure makes the damping member have better vibration reduction performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the timer head wheel hanging strip structure of this utility model.

[0012] Figure 2 This is an exploded view of the timer head wheel hanging bar structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the main structure of the timer head wheel hanging bar of this utility model.

[0014] Figure 4 This is a schematic diagram of the main structure of the timer head wheel with spring-loaded spring according to this utility model.

[0015] The labels in the attached diagram are as follows: 1. Shaft; 2. Head wheel; 3. Winding hook; 4. Protrusion; 5. Winding spring; 6. Snap ring; 7. Damping element; 8. Limiting block; 21. Second limiting block; 31. Hook block; 41. Notch; 42. Resting ring; 43. Outer peripheral wall; 44. Inner peripheral wall; 51. Hook; 71. First limiting block. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 4 As shown, this utility model includes a rotating shaft 1, a head wheel 2, and a spring hook 3. The head wheel 2 is mounted on the shaft of the rotating shaft 1. A protrusion 4 for mounting the spring hook 3 is provided on one axial side of the head wheel 2. On the side where the rotating shaft 1 drives the spring hook 3 to rotate clockwise, the outer peripheral wall 43 of the protrusion 4 is a variable radius curve, and the spatial distance A between the inner surface of the hook block 31 of the spring hook 3 and the outer peripheral wall 43 of the protrusion 4 gradually increases. The spatial distance A corresponds to the bar hook 51 of the spring 5 mounted on the head wheel 2. When the rotating shaft 1 drives the spring hook 3 to rotate clockwise, one side of the hook block 31 of the spring hook 3 hooks with the bar hook 51 of the spring 5. The spring 5 mentioned above is a turbine spring.

[0017] The outer peripheral wall of the protrusion 4 has a notch 41, and the inner peripheral wall has a support ring 42. The spring hook 3 is placed on the support ring 42 and fixed in the protrusion 4 by the retaining ring 6, and the hook block 31 of the spring hook 3 is embedded in the notch 41.

[0018] The outer peripheral wall 43 of the protrusion 4 is a variable radius curve. Along the clockwise direction of the spring hook 3, the thickness of half of the wall of the protrusion 4 gradually increases, while the thickness of the other half is uniform. The inner peripheral wall 44 of the protrusion 4 is a perfectly circular inner wall.

[0019] A damping element 7 is installed on the other side of the axial direction of the head wheel 2. The damping element 7 is fixed by a limiting and fixing block 8, which is fixed on the rotating shaft 1.

[0020] The outer peripheral wall of the damping component 7 is provided with a first limiting block 71, and the inner side wall of the head wheel 2 that abuts against the first limiting block 71 is provided with a second limiting block 21, and the cross-section of the damping block 7 is arched.

[0021] The working principle of this utility model is as follows: When the timer is working, firstly, the rotating shaft 1 rotates clockwise, thereby driving the head wheel 2 to rotate clockwise at the same time. At this time, since the hook 51 of the mainspring 5 abuts against the outer peripheral wall 43 of the protrusion block 4, as the rotating shaft 1 rotates clockwise, the space gap A between the inner side of the hook block 31 of the mainspring hook 3 and the outer peripheral wall 43 of the protrusion block 4 hooks the hook 51 of the mainspring 5 and continues to rotate until the mainspring 5 is tightened.

[0022] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A timer head wheel winding structure, comprising a rotating shaft (1), a head wheel (2), and a spring hook (3); characterized in that: The head wheel (2) is mounted on the shaft of the rotating shaft (1). On one axial side of the head wheel (2), there is a protrusion (4) for mounting the spring hook (3). On the side where the rotating shaft (1) drives the spring hook (3) to rotate clockwise, the outer peripheral wall (43) of the protrusion (4) is a variable radius curve. The space distance A between the inner side of the hook block (31) of the spring hook (3) and the outer peripheral wall (43) of the protrusion (4) gradually increases. The space distance A corresponds to the bar hook (51) of the spring (5) mounted on the head wheel (2). When the rotating shaft (1) drives the spring hook (3) to rotate clockwise, one side of the hook block (31) of the spring hook (3) hooks with the bar hook (51) of the spring (5).

2. The timer head wheel strap structure of claim 1, wherein: The outer peripheral wall of the protrusion (4) has a notch (41) and the inner peripheral wall has a support ring (42). The spring hook (3) is placed on the support ring (42) and fixed in the protrusion (4) by the retaining ring (6). The hook block (31) of the spring hook (3) is embedded in the notch (41).

3. The timer head wheel hanging bar structure according to claim 1, characterized in that: The outer peripheral wall (43) of the protrusion (4) is a variable radius curve. In the clockwise direction along the spring hook (3), half of the wall thickness of the protrusion (4) gradually increases, while the other half has a uniform wall thickness.

4. The timer head wheel hanging bar structure according to claim 3, characterized in that: The inner peripheral wall (44) of the protrusion (4) is a perfect circle.

5. The timer head wheel strap structure of claim 1, wherein: A damping element (7) is installed on the other side of the axial direction of the head wheel (2). The damping element (7) is fixed by a limiting fixing block (8), and the limiting fixing block (8) is fixed on the rotating shaft (1).

6. The timer head wheel and strap arrangement of claim 5 wherein: The damping member (7) has a first limiting block (71) on its outer peripheral wall, and a second limiting block (21) is provided on the inner side wall of the head wheel (2) that abuts against the first limiting block (71). The damping member (7) has an arched cross-section.

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