Multi-conduction timer switch
By setting up multiple timing wheels, timing discs and multi-conducting bakery cams on the timer stand, combined with iron timing card and brake spring, a multi-conducting timer switch is designed, which solves the problem that existing timers cannot achieve multi-stage timing power-off, and realizes the flexibility and cost reduction of multi-stage timing functions.
Patent Information
- Application Number
- CN202421571348.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-04
AI Technical Summary
Existing mechanical timers can only control the opening and closing of one set of terminal contacts, and cannot realize the multi-stage timing power-off function. They also require additional switching switches to meet the firepower selection function, which increases material and processing costs.
A multi-conducting timer switch is designed. By setting multiple timing wheels, timing discs and multi-conducting bakery cams on the timer stand, combining iron timing card and brake spring, the contact and disconnection of the movable terminal shrapnel are controlled to realize the multi-stage timing power-off function.
A timer switch controls multi-stage timing power-off function, meets the different needs of users, and reduces dependence on selecting switches and reduces material and processing costs.
Smart Images
Figure CN222813479U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a timer switch, in particular to a multi-conduction timer switch. Background Art
[0002] Most of the existing mechanical timer technologies are a timer controlling a group of terminal contact opening and closing conduction devices, which can be applied to various small household appliances such as microwave ovens, electric ovens, and air fryers. Because a general oven has four upper and lower heating tubes, according to the different food requirements during use, some food ingredients need to control not only the length of the conduction time requirements but also the upper or lower fire, half fire or full fire heating during processing. A timer controlling a group of terminal contact opening and closing conduction devices cannot meet the above requirements, and an additional selection switch is required to meet the firepower selection function. A mechanical timer plus a selection function switch and the wiring connection between the two require very high material and processing costs.
[0003] The existing mechanical timer comprises a timer frame, a power mechanism arranged on the timer frame, an escapement mechanism for controlling the power release of the power mechanism, and a transmission mechanism arranged between the power mechanism and the escapement mechanism; the escapement mechanism comprises an escape wheel connected to the timer frame and rotating around a wheel shaft, a balance wheel and an escapement fork matched with the two, two steel wires on the escapement fork are driven by the power transmitted from the power mechanism to the escapement wheel to swing, and the herringbone groove at the other end of the escapement fork escapes and swings the pendulum of the hairspring balance wheel back and forth; the timer frame is provided with a timing wheel mechanism with a groove, when the power mechanism winds up the mainspring clockwise, the timing wheel mechanism and the central main shaft rotate together, the side timing card arm climbs out of the timing wheel groove to the outer wheel edge of the timing wheel, and the timing card presses down the elastic terminal fixed on the base, so that the moving contact on the elastic terminal and the static contact on the fixed terminal on the base are closed and connected, so as to achieve the power-on function. When the mainspring on the power mechanism is naturally released counterclockwise, the timing wheel mechanism and the central spindle rotate together. When the set time is up, the side timing card arm falls from the outer edge of the timing wheel into the timing wheel groove, and the elastic terminal fixed on the base automatically pops up, so that the moving contact on the elastic terminal and the static contact on the fixed terminal on the base are automatically disconnected, thereby achieving the power-off function. The technical deficiency is that the existing single-conduction timer has only one set of timing wheel mechanisms, and it is impossible to realize the function of controlling multiple-stage timing on and off power by one timer switch. Utility Model Content
[0004] The utility model aims to provide a multi-conduction timer switch in order to overcome the deficiencies of the prior art and solve the problem that a timer switch cannot control multi-stage timing on and off of power.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-conduction timer switch, including a timer frame, a base arranged at the lower part of the rear end of the timer frame and a shell at the upper part of the rear end, the base and the shell are connected to form a cavity, the timer frame is provided with a main shaft arranged at the center of the timer frame, a power mechanism arranged at the front of the main shaft, an escapement mechanism and a transmission mechanism arranged between the power mechanism and the escapement mechanism in the cavity, the main shaft is provided with a timing wheel, a timing disk, a multi-conduction bakelite cam and an E-type snap ring in sequence from front to back at the rear of the power mechanism, the timing wheel and the timing disk are both provided with grooves, and one side of the base is provided with two or more A fixed terminal is provided on the other side, and a movable end spring clip with a movable terminal corresponding to the fixed terminal is provided, a first bakelite timing card that can slide up and down along the base is provided in the middle of the movable end spring clip opposite to the timing wheel, a second bakelite timing card that can slide up and down along the base is provided in the middle of the movable end spring clip opposite to the multi-conducting bakelite cam, an iron timing card and a brake spring are provided on the first bakelite timing card, the iron timing card cooperates with the timing wheel and the timing disk to control the corresponding movable end spring clip to be pressed down to contact or bounce away from the fixed terminal, and the second bakelite timing card cooperates with the multi-conducting bakelite cam to control the corresponding movable end spring clip to be pressed down to contact or bounce away from the fixed terminal.
[0006] Furthermore, the timer frame includes, from front to back, a connecting mounting plate, a dustproof plate, a large timer frame plate and a small timer frame plate, the main shaft passes through the connecting mounting plate, the dustproof plate, the large timer frame plate and the small timer frame plate in sequence, the power mechanism, the escapement mechanism and the transmission mechanism are all arranged between the large timer frame plate and the small timer frame plate, the timing wheel, the timing disk and the multi-conduction bakelite cam are all arranged at the rear end of the small timer frame plate, and the timing disk is provided with a bending block embedded in the long strip hole of the timing wheel.
[0007] Furthermore, the power mechanism includes a mainspring, a head wheel sheet and a compression spring sheet arranged on the main shaft from front to back, one end of the mainspring is fixed to the large splint of the timer frame, and the other end is fixed to the main shaft.
[0008] Furthermore, the transmission mechanism includes two wheels and three wheels, and the two wheels and three wheels both include a gear shaft and a wheel piece arranged on the gear shaft, the head wheel piece is meshed with the gear shaft of the two wheels, and the wheel piece of the two wheels is meshed with the gear shaft of the three wheels.
[0009] Furthermore, the escapement mechanism includes an escapement wheel arranged on the corresponding gear shaft, a balance wheel and a hairspring arranged on the rotating shaft, and an escapement fork arranged between the escapement wheel and the balance wheel and cooperating with each other, the wheel plate of the three wheels is meshed with the gear shaft of the escapement wheel, one end of the escapement fork cooperates with the escapement wheel, and the other end is connected to the rotating shaft of the balance wheel, one end of the hairspring is fixed on the rotating shaft, and the other end is provided with a pin, and the pin is fixed on the small splint of the timer frame, and the iron timing card cooperates with the timing wheel and the timing disk to control the brake spring to contact or stay away from the balance wheel.
[0010] Furthermore, the multi-conduction bakelite cam includes a sleeve fixed on the main shaft and at least one cam arranged on the sleeve, the cam includes two wheel edges, the radius of one wheel edge is larger than the radius of the other wheel edge, when the main shaft rotates, the second bakelite timing card controls the corresponding movable end spring piece to press down to contact or bounce away according to the change of the wheel edge of the cam.
[0011] Furthermore, the iron timing card is Y-shaped, the rear end of the forked end is fixed on the first bakelite timing card, the front end cooperates with the timing wheel and the timing disk, and the other end is rotatably arranged between the large clamping plate of the timer frame and the small clamping plate of the timer frame.
[0012] Furthermore, the rim arc of the timing wheel is 0° to 270°.
[0013] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a multi-conduction timer switch, which controls the movement of the bakelite timing card through multiple cams and timing wheels with different wheel edges, drives the movable end spring piece to approach or move away from the fixed terminal, and can switch between multiple terminals. Correspondingly, the power mechanism can output in a variety of different circuits to meet the user's different needs for timing length and power on and off functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:
[0015] Figure 1 The present invention is a schematic structural diagram of a multi-conduction timer switch with its outer shell removed.
[0016] Figure 2 The utility model is a schematic diagram of the structure of a multi-conduction timer switch.
[0017] Figure 3 It is a structural schematic diagram of the escapement mechanism and the transmission mechanism described in the utility model.
[0018] Figure 4 for Figure 3 Left view of .
[0019] Figure 5The utility model is a schematic diagram of an exploded view of a multi-conduction timer switch.
[0020] Among them: 1. Connecting mounting plate; 2. Dustproof plate; 3. Base; 4. Fixed terminal; 5. Movable end spring clip; 6. Second bakelite timing card; 7. First bakelite timing card; 8. Brake spring; 9. Iron timing card; 10. Large splint of timer rack; 11. Spring; 12. Head wheel piece; 13. Compression spring piece; 14. Main shaft; 15. Second wheel; 16. Third wheel; 17. Escape wheel; 18. Escape fork; 19. Balance wheel; 20. Hairspring pin; 21. Small splint of timer rack; 22. E-type retaining ring; 23. Multi-conducting bakelite cam; 24. Timing plate; 25. Timing wheel; 26. Housing; 27. Hairspring; 28. Card block. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.
[0022] Aiming at the demand of timer switch, the designer of the utility model innovatively proposes a multi-conduction timer switch, which can control multiple sections of timed on and off power by one timer switch.
[0023] like Figures 1 to 5As shown, a multi-conduction timer switch comprises a timer frame, a base 3 arranged at the lower part of the rear end of the timer frame and a shell 26 at the upper part of the rear end, the base 3 and the shell 26 are connected to form a cavity, the timer frame is provided with a main shaft 14 arranged at the center of the timer frame, a power mechanism arranged at the front of the main shaft 14, an escapement mechanism and a transmission mechanism arranged between the power mechanism and the escapement mechanism in the cavity, the main shaft 14 is provided with a timing wheel 25, a timing disk 24, a multi-conduction bakelite cam 23 and an E-type snap ring 22 in sequence from front to back at the rear of the power mechanism, the timing wheel 25 and the timing disk 24 are both provided with grooves, one side of the base 3 is provided with more than two fixed terminals 4, and the other side is provided with There is a movable end spring clip 5 with a movable terminal corresponding to the fixed terminal 4, a first bakelite timing card 7 that can slide up and down along the base 3 is provided in the middle of the movable end spring clip 5 opposite to the timing wheel 25, and a second bakelite timing card 6 that can slide up and down along the base 3 is provided in the middle of the movable end spring clip 5 opposite to the multi-conducting bakelite cam 23, and an iron timing card 9 and a brake spring 8 are provided on the first bakelite timing card 7, and the iron timing card 9 cooperates with the timing wheel 25 and the timing disk 24 to control the corresponding movable end spring clip 5 to be pressed down to contact or bounce away from the fixed terminal 4, and the second bakelite timing card 6 cooperates with the multi-conducting bakelite cam 23 to control the corresponding movable end spring clip 5 to be pressed down to contact or bounce away from the fixed terminal 4.
[0024] The timer frame includes, from front to back, a connecting mounting plate 1, a dustproof plate 2, a large timer frame plate 10 and a small timer frame plate 21. The main shaft 14 passes through the connecting mounting plate 1, the dustproof plate 2, the large timer frame plate 10 and the small timer frame plate 21 in sequence. The power mechanism, the escapement mechanism and the transmission mechanism are all arranged between the large timer frame plate 10 and the small timer frame plate 21. The timing wheel 25, the timing disk 24 and the multi-conduction bakelite cam 23 are all arranged at the rear end of the small timer frame plate 21. The timing disk 24 is provided with a bending block 28 embedded in the long hole of the timing wheel 25. The timing disk 24 drives the timing wheel 25 to rotate forward or reverse.
[0025] The power mechanism includes a mainspring 11 , a head wheel piece 12 and a compression spring piece 13 arranged on a main shaft 14 from front to back. One end of the mainspring 11 is fixed to the large splint 10 of the timer frame, and the other end is fixed to the main shaft 14 .
[0026] The transmission mechanism includes two wheels 15 and three wheels 16 , and the two wheels 15 and the three wheels 16 both include a gear shaft and a wheel piece arranged on the gear shaft. The head wheel piece 12 is meshed with the gear shaft of the two wheels 15 , and the wheel piece of the two wheels 15 is meshed with the gear shaft of the three wheels 16 .
[0027] The escapement mechanism includes an escape wheel 17 arranged on a corresponding gear shaft, a balance wheel 19 and a hairspring 27 arranged on a rotating shaft, and an escapement fork 18 arranged between the escape wheel 17 and the balance wheel 19 and matched with each other. The wheel piece of the three-wheel 16 is meshed with the gear shaft of the escape wheel 17, one end of the escapement fork 18 is matched with the escape wheel 17, and the other end is connected with the rotating shaft of the balance wheel 19. One end of the hairspring 27 is fixed on the rotating shaft, and the other end is provided with a latch. The power transmitted to the escape wheel 17 by the power mechanism drives the escapement fork 18 to swing, and the herringbone groove at the other end of the escapement fork 18 swings the pendulum of the hairspring 27 and the balance wheel 19 back and forth. The latch is fixed on the small clamping plate 21 of the timer frame, and the iron timing card 9 cooperates with the timing wheel 24 and the timing disk 25 to drive the first bakelite timing card 7 to slide up and down, thereby controlling the brake spring 8 to contact or move away from the balance wheel 19. The brake spring 8 and the balance wheel 19 are away from each other when the timing work is started, and contact each other when the timing work is stopped.
[0028] The multi-conduction bakelite cam 23 includes a sleeve fixed on the main shaft 14 and at least one cam arranged on the sleeve, the cam includes two wheel edges, the radius of one wheel edge is larger than the radius of the other wheel edge, in this embodiment, two cams are provided, and the wheel edge radius changes of the two cams are not at the same position, when the main shaft 14 rotates, the second bakelite timing card 6 controls the corresponding movable end spring piece 5 to press down to contact or bounce away according to the change of the wheel edge of the cam.
[0029] The iron timing card 9 is Y-shaped, with the rear end of one fork fixed on the first bakelite timing card 7, the front end cooperates with the timing wheel 25 and the timing disk 24, and the other end is rotatably arranged between the large splint 10 of the timer frame and the small splint 21 of the timer frame.
[0030] The rim arc of the timing wheel 25 is 0° to 270°
[0031] In this embodiment, the wheel edge arc of the timing wheel 25 is 270°, and the wheel edge arc of one cam of the multi-conduction bakelite cam 23 is 225° and the wheel edge arc of the other cam is 180°.
[0032] When the mainspring 11 is wound up, the timing disk 24 assists the iron timing card 9 connected to the first bakelite timing card 7 to crawl out of the groove of the timing disk 24 and the timing wheel 25 to buffer the stuck transition, and does not affect the iron timing card 9 connected to the first bakelite timing card 7 to quickly fall into the groove of the timing wheel 25 when the mainspring 11 is wound up.
[0033] During the working process of the first passage, when the power mechanism winds up the mainspring 11 clockwise, the multi-conducting bakelite cam 23, the timing wheel 25 and the main shaft 14 rotate together by about 45°, and the iron timing card 9 on the first bakelite timing card 7 climbs out of the groove of the timing wheel 25 to the outer wheel edge of the timing wheel 25, and the first bakelite timing card 7 presses down the corresponding movable end spring clip 5 fixed on the base 3, so that the moving contact on the movable terminal on the movable end spring clip 5 and the static contact on the fixed terminal 4 on the base 3 are closed and connected, achieving the first power-on function.
[0034] During the working process of the second path, when the power mechanism continues to wind up the mainspring 11 clockwise, the multi-conducting bakelite cam 23, the timing wheel 25 and the main shaft 14 rotate together by about 90°, and the second bakelite timing card 6 slides from the small radius wheel edge of the corresponding multi-conducting bakelite cam to the large radius wheel edge, and the second bakelite timing card 6 presses down the corresponding movable end spring clip 5 fixed on the base 3, so that the moving contact on the movable terminal on the movable end spring clip 5 and the static contact on the fixed terminal 4 on the base 3 are closed and connected, thereby achieving the second stage of power-on function.
[0035] During the working process of the third path, when the power mechanism continues to wind up the mainspring 11 clockwise, the multi-conducting bakelite cam 23, the timing wheel 25 and the main shaft 14 rotate together by about 135°, and another second bakelite timing card 6 slides from the corresponding multi-conducting bakelite cam small radius wheel edge to the large radius wheel edge, and the second bakelite timing card 6 presses down the corresponding movable end spring clip 5 fixed on the base 3, so that the moving contact on the movable terminal on the movable end spring clip 5 and the static contact on the fixed terminal 4 on the base 3 are closed and connected, thereby achieving the third stage of power-on function.
[0036] When the mainspring 11 on the power mechanism is naturally released counterclockwise, the multi-conducting bakelite cam 23, the timing wheel 25 and the main shaft 14 rotate together. When the set time is up, the iron timing card 9 falls back from the outer wheel edge of the timing wheel 25 into the groove of the timing wheel 25, and the second bakelite timing card 6 returns from the large-radius wheel edge of the corresponding multi-conducting bakelite cam to the small-radius wheel edge. The iron timing card 9 drives the first bakelite timing card 7 to slide upward, thereby driving the brake spring 8 on the first bakelite timing card 7 to contact the balance wheel 19, and the movable end spring clip 5 fixed on the base 3 automatically pops up one after another, so that the movable terminal on the movable end spring clip 5 and the fixed terminal 4 on the base 3 are automatically disconnected one after another, thereby achieving the power-off function at different times.
[0037] The main shaft 14 can also be rotated 45° counterclockwise at the position of the iron timing card 9 in the groove of the timing wheel 25 to realize the three-stage switch being energized for a long time at irregular intervals.
[0038] For example, the power-on time of the three-stage switch is 30 minutes for the first stage switch, 25 minutes for the second stage switch, and 20 minutes for the third stage switch.
[0039] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a multi-conduction timer switch, which controls the movement of the bakelite timing card through multiple cams and timing wheels with different wheel edges, drives the movable end spring piece to approach or move away from the fixed terminal, and can switch between multiple terminals. Correspondingly, the power mechanism can output in a variety of different circuits to meet the user's different needs for timing length and power on and off functions.
[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A multi-conduction timer switch, comprising a timer frame, a base arranged at the lower part of the rear end of the timer frame and a shell at the upper part of the rear end, the base and the shell are connected to form a cavity, the timer frame is provided with a main shaft arranged at the center of the timer frame, a power mechanism arranged at the front of the main shaft, an escapement mechanism and a transmission mechanism arranged between the power mechanism and the escapement mechanism in the cavity, characterized in that: The main shaft is located behind the power mechanism and is sequentially sleeved with a timing wheel, a timing disk, a multi-conducting bakelite cam and an E-type retaining ring from front to back. The timing wheel and the timing disk are both provided with grooves. One side of the base is provided with more than two fixed terminals, and the other side is provided with a movable end spring clip with a movable terminal corresponding to the fixed terminal. The middle part of the movable end spring clip opposite to the timing wheel is provided with a first bakelite timing card that can slide up and down along the base, and the middle part of the movable end spring clip opposite to the multi-conducting bakelite cam is provided with a second bakelite timing card that can slide up and down along the base. The first bakelite timing card is provided with an iron timing card and a brake spring. The iron timing card cooperates with the timing wheel and the timing disk to control the corresponding movable end spring clip to be pressed down to contact or bounce away from the fixed terminal, and the second bakelite timing card cooperates with the multi-conducting bakelite cam to control the corresponding movable end spring clip to be pressed down to contact or bounce away from the fixed terminal.
2. The multi-conduction timer switch according to claim 1, characterized in that: The timer frame includes a connecting mounting plate, a dustproof plate, a large timer frame plate and a small timer frame plate from front to back, the main shaft passes through the connecting mounting plate, the dustproof plate, the large timer frame plate and the small timer frame plate in sequence, the power mechanism, the escapement mechanism and the transmission mechanism are all arranged between the large timer frame plate and the small timer frame plate, the timing wheel, the timing disk and the multi-conduction bakelite cam are all arranged at the rear end of the small timer frame plate, and the timing disk is provided with a bending block embedded in the long strip hole of the timing wheel.
3. The multi-conduction timer switch according to claim 2, characterized in that: The power mechanism comprises a mainspring, a head wheel sheet and a compression spring sheet arranged on the main shaft from front to back. One end of the mainspring is fixed on a large splint of a timer frame, and the other end is fixed on the main shaft.
4. The multi-conduction timer switch according to claim 3, characterized in that: The transmission mechanism comprises two wheels and three wheels, and the two wheels and three wheels both comprise a gear shaft and a wheel piece arranged on the gear shaft, the head wheel piece is meshed with the gear shaft of the two wheels, and the wheel piece of the two wheels is meshed with the gear shaft of the three wheels.
5. The multi-conduction timer switch according to claim 4, characterized in that: The escapement mechanism includes an escapement wheel arranged on a corresponding gear shaft, a balance wheel and a hairspring arranged on a rotating shaft, and an escapement fork arranged between the escapement wheel and the balance wheel and matched with each other. The wheel plate of the three wheels is meshed with the gear shaft of the escapement wheel. One end of the escapement fork is matched with the escapement wheel, and the other end is connected to the rotating shaft of the balance wheel. One end of the hairspring is fixed on the rotating shaft, and the other end is provided with a pin. The pin is fixed on a small splint of a timer frame. The iron timing card cooperates with the timing wheel and the timing disk to control the brake spring to contact or stay away from the balance wheel.
6. The multi-conduction timer switch according to claim 5, characterized in that: The multi-conduction bakelite cam includes a sleeve fixed on the main shaft and at least one cam arranged on the sleeve, the cam includes two wheel edges, the radius of one wheel edge is larger than the radius of the other wheel edge, when the main shaft rotates, the second bakelite timing card controls the corresponding movable end spring piece to press down to contact or bounce away according to the change of the wheel edge of the cam.
7. The multi-conduction timer switch according to claim 6, characterized in that: The iron timing card is Y-shaped, with the rear end of one forked end fixed on the first bakelite timing card, the front end matched with the timing wheel and the timing disk, and the other end rotatably arranged between the large clamping plate of the timer frame and the small clamping plate of the timer frame.
8. The multi-conduction timer switch according to claim 7, wherein: The rim arc of the timing wheel is 0° to 270°.