A miniature high temperature resistant mechanical timing on and off device

Abstract

The present invention discloses a miniature high temperature resistant mechanical timing on-off power device, comprising an upper clamping plate of a movement, a lower clamping plate of a movement is arranged on the upper clamping plate of the movement, a mounting cavity is formed between the lower clamping plate of the movement and the upper clamping plate of the movement, and a bar wheel shaft is rotatably arranged on the lower clamping plate of the movement, a moving terminal spring and a static terminal spring are arranged relatively at the front end of the upper clamping plate of the movement, a spring is arranged at the rear end of the moving terminal spring, and a moving contact is arranged on the spring, and a static contact corresponding to the position of the moving contact is arranged at the rear end of the static terminal spring, a positioning plate is arranged in the mounting cavity, and a switching device cooperating with the positioning plate, the moving contact and the static contact is arranged in the mounting cavity. The advantages of the present invention compared with the prior art are: by reasonably adjusting the parameters and structural layout of the gear transmission, the mechanical timing device is miniaturized, which not only improves the aesthetics of the appearance design of the household appliance product, but also greatly saves the production material cost of the household appliance product.

Description

Technical Field

[0001] The invention relates to the technical field of timed power-on, and in particular to a miniature high-temperature-resistant mechanical timed power-on and power-off device. Background Art

[0002] With the continuous innovation of mini household appliances, customers have demanded miniaturization of mechanical timing on-off devices to meet the design and installation space requirements. The existing high-temperature resistant mechanical timing on-off devices sold on the market are no longer suitable for new market demands due to their large size. Summary of the invention

[0003] The present invention miniaturizes the mechanical timing device by reasonably adjusting the parameters of the gear transmission and the structural layout. The present invention solves the installation space problem of the timing device of the mini household appliance, which not only improves the aesthetics of the appearance design of the household appliance product, but also greatly saves the production material cost of the household appliance product.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a miniature high-temperature resistant mechanical timing on-off power device, comprising an upper clamping plate of a movement, a lower clamping plate of the movement is arranged on the upper clamping plate of the movement, an installation cavity is formed between the lower clamping plate of the movement and the upper clamping plate of the movement, and a winding wheel shaft extending into the installation cavity is rotatably arranged on the lower clamping plate of the movement, a moving terminal spring and a static terminal spring are relatively arranged on the front end of the upper clamping plate of the movement, a spring sheet is arranged on the rear end of the moving terminal spring, and a moving contact is arranged on the spring sheet, and a static contact corresponding to the position of the moving contact is arranged on the rear end of the static terminal spring, a positioning disk keyed to the winding wheel shaft is arranged in the installation cavity, and a switching device cooperating with the positioning disk, the moving contact and the static contact is arranged in the installation cavity, the switching device comprises a timing disk keyed to the positioning disk, a notch is arranged on the timing disk, a timing card is rotatably arranged in the installation cavity, a clamping rod is arranged on the timing card, and a push block abutting against the spring sheet is arranged on the side of the timing card away from the clamping rod;

[0005] The winding wheel shaft is provided with a winding wheel located in the installation cavity, and a reset mechanism connected to the winding wheel is provided in the installation cavity, and the reset mechanism includes three transmission gears meshing with each other, and the transmission gear close to the winding wheel is meshed with the winding wheel, and a scroll spring connected to the winding wheel is sleeved on the winding wheel shaft;

[0006] A connecting gear connected to the reset mechanism is rotatably arranged in the installation cavity, and an escapement mechanism connected to the connecting gear is arranged in the installation cavity.

[0007] As an improvement, a dust cover sleeved on the winding wheel axle is provided on the lower splint of the movement.

[0008] The advantages of the present invention compared with the prior art are:

[0009] 1. Smaller size, suitable for small household appliances, solves the problem of insufficient installation space, and makes the appearance of small household appliances more miniaturized;

[0010] 2. The reduction in volume greatly saves the cost of product manufacturing materials;

[0011] 3. The design of the four-stage gear transmission mechanism makes the timer more stable;

[0012] 4. The external design of the scroll spring not only solves the difficulty of reducing the size of the device, but also reduces the friction resistance of the original spring installed inside the movement, which affects the release of the spring torque, and reduces the probability of the timer stopping to a certain extent;

[0013] 5. The design of the dust cover also serves as a mounting bracket, which reduces the appearance size of the timer and saves the manufacturing cost of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of a miniature high temperature resistant mechanical timing on and off power device of the present invention;

[0015] Figure 2 It is a perspective view of the internal transmission system of a miniature high temperature resistant mechanical timing on and off power device of the present invention;

[0016] Figure 3 It is a schematic diagram of the external structure of a miniature high temperature resistant mechanical timing on and off power device of the present invention;

[0017] Figure 4 The present invention is a schematic structural diagram of a miniature high temperature resistant mechanical timing on and off device with a dust cover removed.

[0018] As shown in the figure: 1. Upper plate of movement, 2. Lower plate of movement, 3. Winding wheel shaft, 4. Moving terminal spring, 5. Static terminal spring, 6. Spring piece, 7. Moving contact, 8. Static contact, 9. Positioning plate, 10. Winding wheel, 11. Escapement, 12. Timing plate, 13. Notch, 14. Timing card, 15. Clamp rod, 16. Push block, 17. Transmission gear, 18. Vortex spring, 19. Dust cover. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] In conjunction with the accompanying drawings, a miniature high-temperature resistant mechanical timing on-off device comprises an upper movement clamping plate 1, on which a lower movement clamping plate 2 is arranged, a mounting cavity is formed between the lower movement clamping plate 2 and the upper movement clamping plate 1, and a winding wheel shaft 3 extending into the mounting cavity is rotatably arranged on the lower movement clamping plate 2, a moving terminal spring piece 4 and a static terminal spring piece 5 are relatively arranged at the front end of the upper movement clamping plate 1, a spring piece 6 is arranged at the rear end of the moving terminal spring piece 4, and a moving contact 7 is arranged on the spring piece 6, and the rear end of the static terminal spring piece 5 is provided with a moving contact 7. 7 corresponding to the static contact 8, a positioning disk 9 keyed to the winding wheel shaft 3 is provided in the installation cavity, and a switch device cooperating with the positioning disk 9, the moving contact 7 and the static contact 8 is provided in the installation cavity, the switch device includes a timing disk 12 keyed to the positioning disk 9, the timing disk 12 is provided with a notch 13, a timing card 14 is rotatably provided in the installation cavity, the timing card is provided with a clamping rod 15 clamped in the notch 13, and the timing card 14 is provided with a push block 16 abutting against the spring 6 on the side away from the clamping rod 15;

[0021] The winding wheel shaft 3 is provided with a winding wheel 10 located in the installation cavity, and a reset mechanism connected to the winding wheel 10 is provided in the installation cavity. The reset mechanism includes three transmission gears 17 meshing with each other, and the transmission gear 17 close to the winding wheel 10 is meshed with the winding wheel 10. The winding wheel shaft 3 is sleeved with a scroll spring 18 connected to the winding wheel 10.

[0022] A connecting gear connected to the reset mechanism is rotatably arranged in the installation cavity, and an escapement mechanism 11 connected to the connecting gear is arranged in the installation cavity.

[0023] The lower clamping plate 2 of the movement is provided with a dust cover 19 which is sleeved on the winding wheel axle 3 .

[0024] When the present invention is implemented in a specific way, under normal circumstances, the timing card clamps the clamping rod in the notch under the action of the elastic force of the shrapnel, and is in a power-off state, rotates the winding wheel shaft, the winding wheel shaft rotates to drive the positioning disk to rotate, the positioning disk rotates to drive the timing disk to rotate, the timing disk rotates to make the clamping rod disengage from the notch, the timing card rotates to drive the push block to squeeze the shrapnel, the moving contact on the shrapnel contacts with the static contact to realize power-on, and at the same time, the winding wheel shaft drives the winding wheel to rotate, the rotating gear drives the three transmission gears to rotate, and the rotation of the winding wheel can tighten the scroll spring, the connecting gear follows the rotation, the connecting gear rotates to drive the escapement wheel to rotate, and the three transmission gears reverse under the action of the restoring force of the scroll spring, the escapement mechanism belongs to the prior art, ensures that the three transmission gears reverse at a constant speed and uniformly, the transmission wheel follows the reverse rotation, so that the winding wheel shaft follows the reverse rotation, the winding wheel shaft reverses to drive the positioning disk reverse, the positioning disk reverses to drive the timing disk reverse, the timing card reverses under the action of the elastic force of the shrapnel, the clamping rod is clamped in the notch, the moving contact is separated from the static contact, and is in a power-off state, thereby completing the entire process of timing power-on and timing power-off.

[0025] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A miniature high temperature resistant mechanical timing on and off device, comprising a movement upper plate (1), characterized in that: The upper movement clamping plate (1) is provided with a lower movement clamping plate (2), a mounting cavity is formed between the lower movement clamping plate (2) and the upper movement clamping plate (1), and a winding wheel shaft (3) is rotatably provided on the lower movement clamping plate (2) and extends into the mounting cavity, a moving terminal spring sheet (4) and a stationary terminal spring sheet (5) are relatively provided at the front end of the upper movement clamping plate (1), a spring sheet (6) is provided at the rear end of the moving terminal spring sheet (4), and a moving contact (7) is provided on the spring sheet (6), and a stationary contact (8) corresponding to the position of the moving contact (7) is provided at the rear end of the stationary terminal spring sheet (5), and the mounting A positioning disk (9) keyed to the winding wheel shaft (3) is provided in the cavity, and a switch device cooperating with the positioning disk (9), the moving contact (7) and the static contact (8) is provided in the installation cavity, the switch device comprising a timing disk (12) keyed to the positioning disk (9), the timing disk (12) being provided with a notch (13), a timing card (14) rotatably provided in the installation cavity, the timing card being provided with a clamping rod (15) clamped in the notch (13), and a push block (16) abutting against the spring sheet (6) is provided on the side of the timing card (14) away from the clamping rod (15); The winding wheel shaft (3) is provided with a winding wheel (10) located in the installation cavity, and a reset mechanism connected to the winding wheel (10) is provided in the installation cavity, and the reset mechanism includes three transmission gears (17) meshing with each other, and the transmission gear (17) close to the winding wheel (10) is meshed with the winding wheel (10), and the winding wheel shaft (3) is sleeved with a scroll spring (18) connected to the winding wheel (10); A connecting gear connected to the reset mechanism is rotatably arranged in the installation cavity, and an escapement mechanism (11) connected to the connecting gear is arranged in the installation cavity.

2. A micro high temperature resistant mechanical timing on / off device according to claim 1, characterized in that: The lower clamping plate (2) of the movement is provided with a dust cover (19) sleeved on the winding wheel shaft (3).

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