阅读说明：本技术 浸泡洗涤定时器的主触点开关通断结构 (On-off structure of main contact switch of soaking and washing timer ) 是由 胡凡林 于 2019-11-04 设计创作，主要内容包括：一种浸泡洗涤定时器的主触点开关通断结构,包括有壳体、定时主轴、浸泡凸轮、第一动簧片、第二动簧片、浸泡杠杆；其特征在于：所述浸泡凸轮有两个,分别为第一浸泡凸轮和第二浸泡凸轮,第一浸泡凸轮上设有多个第一缺口,第二浸泡凸轮上设有多个第二缺口,第一缺口和第二缺口相互错位设置,所述浸泡杠杆有两根,分别为第一浸泡杠杆和第二浸泡杠杆；在第一浸泡杠杆的推动和第一动簧片自身弹性共同作用下,同时,在第二浸泡杠杆的推动和第二动簧片自身弹性共同作用下,第一动簧片和第二动簧片相互靠近、或相互远离。两个浸泡杠杆分别控制两个簧片,通过两个浸泡凸轮角度的差角度设计,实现两个杠杆的交替快速跳下的效果,从而实现簧片触点的快速通和断,消除浸泡杠杆因触点缓慢接触导致长时间火花发热导致的熔化不良及功能丧失。(A main contact switch on-off structure of a soaking and washing timer comprises a shell, a timing main shaft, a soaking cam, a first movable spring, a second movable spring and a soaking lever; the method is characterized in that: the soaking device comprises a soaking device, a first soaking cam, a second soaking cam, a plurality of first notches, a plurality of second soaking levers and a plurality of soaking control devices, wherein the soaking cams are a first soaking cam and a second soaking cam respectively; under the combined action of the pushing of the first soaking lever and the elasticity of the first movable spring plate, and under the combined action of the pushing of the second soaking lever and the elasticity of the second movable spring plate, the first movable spring plate and the second movable spring plate are close to or far away from each other. The two soaking levers respectively control the two reeds, and the effect of alternately and rapidly jumping down of the two levers is realized through the design of the difference angle of the angles of the two soaking cams, so that the contact of the reeds is rapidly switched on and off, and poor melting and function loss caused by long-time spark heating due to slow contact of the soaking levers are eliminated.)

1. A main contact switch on-off structure of a soaking and washing timer comprises a shell (1), wherein a timing main shaft (2) penetrates through the bottom of the shell (1), and a soaking cam capable of rotating along with the timing main shaft (2) is sleeved on the timing main shaft (2); a first movable spring (3a) and a second movable spring (3b) are sequentially arranged at intervals on one side of the timing main shaft (2) in the shell (1), a shaft (4) is arranged at the bottom in the shell (1), and the shaft (4) is rotatably sleeved with a soaking lever; the method is characterized in that:

the soaking cam is provided with two vertically-overlapped soaking cams, namely a first soaking cam (5a) and a second soaking cam (5b), the working peripheral surface of the first soaking cam (5a) is provided with a plurality of first notches (5a1), the working peripheral surface of the second soaking cam (5b) is provided with a plurality of second notches (5b1), the first notches (5a1) and the second notches (5b1) are arranged in a staggered mode, and the soaking levers are provided with two vertically-overlapped soaking levers, namely a first soaking lever (6a) and a second soaking lever (6 b);

the first end (6a1) of the first soaking lever (6a) is contacted with the working peripheral surface of the first soaking cam (5a), the second end (6a2) of the first soaking lever (6a) is contacted with the first movable reed (3a), the first end (6b1) of the second soaking lever (6b) is contacted with the working peripheral surface of the second soaking cam (5b), and the second end (6b2) of the second soaking lever (6b) is contacted with the second movable reed (11);

under the combined action of the pushing of the first soaking lever (6a) and the elasticity of the first movable spring piece (3a), and simultaneously, under the combined action of the pushing of the second soaking lever (6b) and the elasticity of the second movable spring piece (3b), the first movable spring piece (3a) and the second movable spring piece (3b) are close to each other or far away from each other.

2. The main contact switch on-off structure of soaking-washing timer according to claim 1, characterized in that: the first movable spring piece (3a) and the second movable spring piece (3b) have the tendency of swinging towards the direction of the timing main shaft (2) under the action of the elasticity of the first movable spring piece and the second movable spring piece after being pushed;

when the first end (6a1) of the first soaking lever (6a) climbs upwards along the slope surface (5a2) of the first notch (5a1), the second end (6a2) of the first soaking lever (6a) pushes the first movable spring piece (3a) to move towards the direction close to the second movable spring piece (3b), meanwhile, the first end (6b1) of the second soaking lever (6b) climbs downwards along the slope surface (5b2) of the second notch (5a1), and the second movable spring piece (3b) moves towards the direction close to the first movable spring piece (3a) under the action of self elasticity;

when the first end (6a1) of the first soaking lever (6a) climbs downwards along the slope surface (5a2) of the first notch (5a1), the first movable spring piece (3a) moves towards the direction far away from the second movable spring piece (3b) under the action of the self elasticity, meanwhile, the first end (6b1) of the second soaking lever (6b) climbs upwards along the slope surface (5b2) of the second notch (5b1), and the second end (6b2) of the second soaking lever (6b) pushes the second movable spring piece (3b) to move towards the direction far away from the first movable spring piece (3 a).

3. The main contact switch on-off structure of soaking-washing timer according to claim 2, characterized in that: the first soaking cam (5a) is positioned above the second soaking cam (5b), the first soaking lever (6a) is positioned above the second soaking lever (6b), the first movable spring piece (3a) and the second movable spring piece (3b) are arranged at left and right intervals, and the first movable spring piece (3a) is closer to the timing main shaft (2) than the second movable spring piece (3 b); the second end of the first soaking lever (6a) is provided with a first contact column (6a3) extending downwards to be contacted with the first movable spring piece (3a), and the second end of the second soaking lever (6b) is provided with a second contact column (6b3) extending upwards to be contacted with the second movable spring piece (3 b).

4. The main contact switch on-off structure of soaking-washing timer according to claim 2, characterized in that: the first soaking cam (5a) is positioned below the second soaking cam (5b), the first soaking lever (6a) is positioned below the second soaking lever (6b), the first movable spring piece (3a) and the second movable spring piece (3b) are arranged at left and right intervals, and the first movable spring piece (3a) is closer to the timing main shaft (2) than the second movable spring piece (3 b); the second end (6a2) of the first soaking lever (6a) is directly contacted with the first movable spring plate (3a), and the second soaking lever (6b) is provided with a second contact column (6b3) which extends downwards and is used for contacting with the second movable spring plate (3 b).

5. The on-off structure of the main contact switch of the soaking and washing timer according to any one of claims 1 to 4, characterized in that: the timing main shaft (2) is gone up the cover and is equipped with shift fork (8) that can follow its rotation, shift fork (8) have bellied drive portion (81), first soaking cam (5a) and second soak cam (5b) cover and establish on shift fork (8), be equipped with on the inner hole wall of first soaking cam (5a) the indent and drive the first driving groove (5a3) of portion (81) complex, be equipped with on the inner hole wall of second soaking cam (5b) the indent and drive portion (81) complex second driving groove (5b3), first driving groove (5a3) and second drive the width (D1) of groove (5b3) and all be greater than width (D2) of drive portion (81) for drive portion (81) can drive first driving groove (5a3) and second relatively and drive groove (5b3) and move.

6. The main contact switch on-off structure of soaking and washing timer according to claim 3, characterized in that: a buzzing cam (7) capable of rotating along with the timing main shaft (2) is further sleeved on the timing main shaft (2), the buzzing cam (7) is positioned above the first soaking cam (5a), and a third gap (71) is formed in the working peripheral surface of the buzzing cam (7); a buzzing lever (9) is sleeved on the shaft (4), and the buzzing lever (9) is positioned above the first soaking lever (6 a); a buzzer reed (3c) is further arranged on the outer side of the second movable reed (3b), and the buzzer reed (3c) and the second movable reed (3b) are horizontally arranged at intervals; the first end (91) of the buzzing lever (9) is in contact with the buzzing cam (7), and the second end (92) of the buzzing lever (9) is provided with a third contact column (93) which extends downwards, extends between the buzzing reed (3c) and the second movable reed (3b) and is in contact with the buzzing reed (3 c); under the condition that the first end (91) of the buzzing lever (9) abuts against the third notch (71) on the working peripheral surface of the buzzing cam (7) and the first end (6b1) of the second soaking lever (6b) abuts against the working peripheral surface of the second soaking cam (5b), the buzzing reed (3c) and the second movable reed (3b) are in contact conduction, and the buzzing reed (3c) and the second movable reed (3b) are separated in the condition that the first end (91) of the buzzing lever (9) abuts against the working peripheral surface of the buzzing cam (7).

Technical Field

The invention relates to a timer for a washing machine, in particular to a main contact switch on-off structure of a soaking and washing timer.

Background

Washing machines with soaking function have already made a large market share in the market, and the advantages of such washing machines are obvious: has the function of soaking, and can fully dissolve the detergent, and has high washing degree and good cleaning degree. In order to provide the washing machine with the soaking and washing functions, the timer used in the washing machine must have the soaking and washing functions. The Chinese invention patent 'a washing timer with soaking function' with the patent number ZL200610049765.X (the publication number is CN100394526C) applied by the applicant discloses the washing timer with soaking function, which comprises a shell, wherein an escapement structure with stable walking period is arranged in the shell, the escapement structure comprises an escapement pitch, a timing spindle penetrates through the bottom of the shell, a soaking cam, a main cam and a head wheel which can rotate along with the timing spindle are sequentially sleeved on the timing spindle from top to bottom, a driving spring which is used as a power source is sleeved on the timing spindle between the head wheel and the shell, and the working peripheral surfaces of the soaking cam and the main cam are provided with gaps; the escapement and the head wheel are connected together through a speed-changing gear train, and the speed-changing gear train is used for transmitting the rotating speed of the timing main shaft to the escapement when the driving spring is released; a driven reed and a driving reed are sequentially arranged at intervals on one side of the timing main shaft in the shell, a shaft is arranged at the bottom in the shell, and the shaft is sequentially and rotatably sleeved with a soaking lever and a main control lever from top to bottom; one end of the soaking lever is in contact with the working circumferential surface of the soaking cam, the other end of the soaking lever is in contact with the driving reed, the driven reed is separated from the driving reed in the state that one end of the soaking lever is abutted against the notch of the working circumferential surface of the soaking cam, and the soaking lever pushes the driving reed in the state that one end of the soaking lever is abutted against the working circumferential surface of the soaking cam, so that the driven reed is in contact conduction with the driving reed.

The aforementioned timer has the following drawbacks: the soaking cam pushes the soaking lever slowly, so that the contact of the reed pushed by the lever approaches slowly, the contact needs to spend a long time in the process of approaching slowly to be completely conducted, the heating of sparks generated during electric contact lasts for a long time, and the heat is conducted to the adjacent soaking lever when the heat accumulation is large enough, and poor melting and function loss are generated.

In order to solve the above technical problem, the applicant tried to modify the slope of the soaking cam to make it steep so as to accelerate the contact approach conduction speed and shorten the spark time, but at the same time, the steep slope would generate greater resistance, so that after the timer is conducted by the reed pressure, the speed of the spindle rotation would be slowed down, which would increase the duration of the spark, so modifying the slope of the cam would not eliminate the undesirable phenomenon.

Disclosure of Invention

The invention aims to solve the technical problem of providing a main contact switch on-off structure of a soaking and washing timer, which can make a contact quickly connected and disconnected.

The technical scheme adopted by the invention for solving the technical problems is as follows: a main contact switch on-off structure of a soaking and washing timer comprises a shell, wherein a timing main shaft is arranged at the bottom of the shell in a penetrating way, and a soaking cam capable of rotating along with the timing main shaft is sleeved on the timing main shaft; a first movable spring and a second movable spring are sequentially arranged at intervals on one side of the timing main shaft in the shell, and a shaft is arranged at the bottom in the shell and rotatably sleeved with a soaking lever; the method is characterized in that: the soaking cam is provided with two vertically-overlapped parts which are respectively a first soaking cam and a second soaking cam, a plurality of first notches are arranged on the working peripheral surface of the first soaking cam, a plurality of second notches are arranged on the working peripheral surface of the second soaking cam, the first notches and the second notches are arranged in a staggered mode, and the soaking lever is provided with two vertically-overlapped parts which are respectively a first soaking lever and a second soaking lever; the first end of the first soaking lever is in contact with the working peripheral surface of the first soaking cam, the second end of the first soaking lever is in contact with the first movable reed, the first end of the second soaking lever is in contact with the working peripheral surface of the second soaking cam, and the second end of the second soaking lever is in contact with the second movable reed; under the combined action of the pushing of the first soaking lever and the elasticity of the first movable spring plate, and under the combined action of the pushing of the second soaking lever and the elasticity of the second movable spring plate, the first movable spring plate and the second movable spring plate are close to each other or far away from each other.

Preferably, the first movable spring piece and the second movable spring piece both have a tendency of swinging towards the direction of the timing main shaft under the action of self elastic force after being pushed; when the first end of the first soaking lever climbs upwards along the slope surface of the first gap, the second end of the first soaking lever pushes the first movable spring piece to move towards the direction close to the second movable spring piece, meanwhile, the first end of the second soaking lever climbs downwards along the slope surface of the second gap, and the second movable spring piece moves towards the direction close to the first movable spring piece under the action of the elasticity of the second movable spring piece; when the first end of the first soaking lever crawls downwards along the slope surface of the first notch, the first movable spring piece moves towards the direction far away from the second movable spring piece under the action of self elasticity, meanwhile, the first end of the second soaking lever crawls upwards along the slope surface of the second notch, and the second end of the second soaking lever pushes the second movable spring piece to move towards the direction far away from the first movable spring piece. The structure is beneficial to realizing that the first movable spring piece and the second movable spring piece are close to or far away from each other at the same time, and can be reversely arranged.

Preferably, the first soaking cam is located above the second soaking cam, the first soaking lever is located above the second soaking lever, the first movable spring plate and the second movable spring plate are arranged at left and right intervals, and the first movable spring plate is closer to the timing main shaft than the second movable spring plate; the first soaking lever is provided with a first contact column which extends downwards and is used for being in contact with the first movable spring piece, and the second soaking lever is provided with a second contact column which extends upwards and is used for being in contact with the second movable spring piece.

Of course, the following arrangement structure may also be adopted, where the first soaking cam is located below the second soaking cam, the first soaking lever is located below the second soaking lever, the first movable spring plate and the second movable spring plate are arranged at left and right intervals, and the first movable spring plate is closer to the timing main shaft than the second movable spring plate; the second end of the first soaking lever is directly contacted with the first movable spring plate, and the second end of the second soaking lever is provided with a second contact column which extends downwards and is used for being contacted with the second movable spring plate.

For the contact of making first movable reed and second movable reed break off each other or contact more fast, further improve, the cover is equipped with the shift fork that can follow its rotation on the above-mentioned timing main shaft, and the shift fork has bellied drive portion, first soaking cam and second soak the cam sleeve and establish on the shift fork, be equipped with on the interior pore wall of first soaking cam the indent with drive the first drive groove of portion complex, be equipped with on the interior pore wall of second soaking cam the indent with drive portion complex second drive groove, the width in first drive groove and second drive groove all is greater than the width of drive portion for drive portion can drive the groove and remove by first drive groove and second relatively. When the first end of the soaking lever crawls downwards along the slope surface of the notch, the corresponding soaking cam can deflect a small angle relative to the timing main shaft under the pushing action of the slope surface, so that the soaking lever instantly falls to the bottom surface of the low notch from the high working surface, and the two movable reeds can be quickly disconnected or contacted.

The timing main shaft is also sleeved with a buzzing cam which can rotate along with the timing main shaft, the buzzing cam is positioned above the first soaking cam, and a third gap is formed in the working circumferential surface of the buzzing cam; a buzzing lever is sleeved on the shaft and positioned above the first soaking lever; a buzzer reed is arranged on the outer side of the second movable reed, and the buzzer reed and the second movable reed are horizontally arranged at intervals; the first end of the buzzing lever is contacted with the buzzing cam, and the second end of the buzzing lever is provided with a third contact column which extends downwards, extends between the buzzing reed and the second movable reed and is contacted with the buzzing reed; under the state that the first end of the buzzing lever is abutted against the third gap on the working peripheral surface of the buzzing cam and the first end of the second soaking lever is abutted against the working peripheral surface of the second soaking cam, the buzzing reed is in contact conduction with the second movable reed, and the buzzing reed is separated from the second movable reed in the state that the first end of the buzzing lever is abutted against the working peripheral surface of the buzzing cam. The purpose of installing the buzzing cam is to drive a buzzer on the washing machine to work in order that the buzzing reed is connected with the driven reed after washing is finished, so that a user is reminded, and the washing process is immediately finished.

Compared with the prior art, the invention has the advantages that: the original structure of one soaking lever and one soaking cam is modified into two soaking levers and two soaking cams which are in one-to-one correspondence, the two soaking levers respectively control two reeds, and the alternate and rapid tripping effect of the two levers is realized through the design of the angle difference of the two soaking cams, so that the rapid on-off of contacts of the reeds is realized, and the poor melting and function loss caused by long-time spark heating due to the slow contact of the soaking levers are eliminated. The alternate tripping structure can also design the slope of the two sides of the notch in the soaking cam to be more gradual, which is helpful for reducing the resistance transmitted by the lever in the unit time of the timer operation.

Drawings

FIG. 1 is a schematic perspective view (original position) of the first embodiment;

FIG. 2 is a schematic perspective view (home position) of the first embodiment with the buzzer cam and the buzzer lever removed;

FIG. 3 is a diagram showing the positional relationship between the second soaking cam and the second soaking lever according to the first embodiment (home position);

fig. 4 is a schematic perspective view showing the structure of the first embodiment (natural rotation start point, position where washing is just started);

FIG. 5 is a schematic perspective view of the first embodiment with the buzzer cam and the buzzer lever removed (natural rotation start point, position of beginning to wash clothes);

FIG. 6 is a diagram showing a positional relationship between the second soaking cam and the second soaking lever in the first embodiment (natural rotation start point, initial washing position);

FIG. 7 is a schematic perspective view of the first embodiment (operating in a soaking position for a certain period of time);

FIG. 8 is a schematic perspective view of the first embodiment with the buzzer cam and the buzzer lever removed (operating in the soak position for a period of time);

FIG. 9 is a diagram showing the positional relationship between the second soaking cam and the second soaking lever in the first embodiment (running time soaking position);

FIG. 10 is a schematic perspective view of a first soaking cam according to the first embodiment;

FIG. 11 is a schematic perspective view of a second soaking cam in the first embodiment;

FIG. 12 is a perspective view of a fork according to the first embodiment;

FIG. 13 is a schematic perspective view of a first soaking lever according to the first embodiment;

FIG. 14 is a perspective view of a first soaking lever according to the first embodiment;

FIG. 15 is a schematic perspective view (home position) of the second embodiment with the buzzer cam and the buzzer lever removed;

fig. 16 is a diagram showing a positional relationship between the second soaking cam and the second soaking lever in the second embodiment (home position).

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 14, a preferred embodiment of the present invention is shown.

A main contact switch on-off structure of a soaking and washing timer comprises a shell 1, wherein a timing main shaft 2 penetrates through the bottom of the shell 1, and a soaking cam capable of rotating along with the timing main shaft 2 is sleeved on the timing main shaft 2; a first movable spring piece 3a and a second movable spring piece 3b are sequentially arranged at intervals at one side of a timing main shaft 2 in a shell 1, a shaft 4 is arranged at the bottom in the shell 1, and the shaft 4 is rotatably sleeved with a soaking lever.

The soaking cam is provided with two vertically-overlapped soaking cams which are respectively a first soaking cam 5a and a second soaking cam 5b, the working peripheral surface of the first soaking cam 5a is provided with a plurality of first notches 5a1, the working peripheral surface of the second soaking cam 5b is provided with a plurality of second notches 5b1, the first notches 5a1 and the second notches 5b1 are arranged in a staggered mode, namely, the convex surface of the first soaking cam 5a corresponds to the first notch 5b1 of the second soaking cam 5b, the first notch 5a1 of the first soaking cam 5a corresponds to the convex surface of the second soaking cam 5b, the notches also belong to the part of the working peripheral surface of the soaking cam, the structure of the soaking cam is similar to that of the existing soaking cam, and the soaking lever is provided with two vertically-overlapped soaking levers which are respectively a first soaking lever 6a and a second soaking lever 6 b. The first end 6a1 of the first soaking lever 6a contacts with the working peripheral surface of the first soaking cam 5a, the second end 6a2 of the first soaking lever 6a contacts with the first movable reed 3a, the first end 6b1 of the second soaking lever 6b contacts with the working peripheral surface of the second soaking cam 5b, and the second end 6b2 of the second soaking lever 6b contacts with the second movable reed 11; under the combined action of the pushing of the first soaking lever 6a and the elasticity of the first movable spring piece 3a, and simultaneously, under the combined action of the pushing of the second soaking lever 6b and the elasticity of the second movable spring piece 3b, the first movable spring piece 3a and the second movable spring piece 3b are close to or far away from each other.

The first movable spring plate 3a and the second movable spring plate 3b have the tendency of swinging towards the direction of the timing main shaft 2 under the action of the elasticity of the first movable spring plate and the second movable spring plate after being pushed by the corresponding soaking levers; when the first end 6a1 of the first soaking lever 6a climbs upwards along the slope surface 5a2 of the first notch 5a1, the second end 6a2 of the first soaking lever 6a pushes the first movable spring 3a to move towards the direction close to the second movable spring 3b, meanwhile, the first end 6b1 of the second soaking lever 6b climbs downwards along the slope surface 5b2 of the second notch 5a1, and the second movable spring 3b moves towards the direction close to the first movable spring 3a under the action of self elasticity;

when the first end 6a1 of the first soaking lever 6a climbs downward along the slope surface 5a2 of the first notch 5a1, the first movable spring 3a moves away from the second movable spring 3b under the action of its own elastic force, and at the same time, the first end 6b1 of the second soaking lever 6b climbs upward along the slope surface 5b2 of the second notch 5b1, and the second end 6b2 of the second soaking lever 6b pushes the second movable spring 3b to move away from the first movable spring 3 a.

The first soaking cam 5a is positioned above the second soaking cam 5b, the first soaking lever 6a is positioned above the second soaking lever 6b, the first movable spring piece 3a and the second movable spring piece 3b are arranged at intervals left and right, and the first movable spring piece 3a is closer to the timing main shaft 2 than the second movable spring piece 3 b; the second end 6a2 of the first soaking lever 6a has a first contact post 6a3 extending downward for contacting the first movable spring 3a, and the second end 6b2 of the second soaking lever 6b has a second contact post 6b3 extending upward for contacting the second movable spring 3 b.

The timing main shaft 2 is sleeved with a shifting fork 8 capable of rotating along with the timing main shaft, the shifting fork 8 is provided with a convex driving portion 81, the first soaking cam 5a and the second soaking cam 5b are sleeved on the shifting fork 8, a first driving groove 5a3 which is concave and matched with the driving portion 81 is arranged on the inner hole wall of the first soaking cam 5a, a second driving groove 5b3 which is concave and matched with the driving portion 81 is arranged on the inner hole wall of the second soaking cam 5b, the width D1 of the first driving groove 5a3 and the second driving groove 5b3 is larger than the width D2 of the driving portion 81, so that the driving portion 81 can move relative to the first driving groove 5a3 and the second driving groove 5b 3.

The timing main shaft 2 is also sleeved with a buzzing cam 7 which can rotate along with the timing main shaft 2, the buzzing cam 7 is positioned above the first soaking cam 5a, and the working peripheral surface of the buzzing cam 7 is provided with a third gap 71; a buzzing lever 9 is sleeved on the shaft 4, and the buzzing lever 9 is positioned above the first soaking lever 6 a; a buzzer reed 3c is arranged at the outer side of the second movable reed 3b, and the buzzer reed 3c and the second movable reed 3b are arranged horizontally and at intervals; the first end 91 of the buzzing lever 9 is contacted with the buzzing cam 7, and the second end 92 of the buzzing lever 9 is provided with a third contact column 93 which extends downwards, extends between the buzzing reed 3c and the second movable reed 3b and is contacted with the buzzing reed 3 c; under the condition that the first end 91 of the buzzing lever 9 abuts against the third notch 71 on the working peripheral surface of the buzzing cam 7 and the first end 6b1 of the second soaking lever 6b abuts against the working peripheral surface of the second soaking cam 5b, the buzzing reed 3c and the second movable reed 3b are in contact conduction, and under the condition that the first end 91 of the buzzing lever 9 abuts against the working peripheral surface of the buzzing cam 7, the buzzing reed 3c and the second movable reed 3b are separated.

The structure can realize the quick on-off of the contact switch. The poor melting and the function loss of the soaking lever caused by the long-time spark heating of the contact are eliminated.

As the first end 6a1 of the first soaking lever 6a climbs up the ramp 5a2 of the first notch 5a1, the second end 6a2 of the first soaking lever 6a pushes the first movable spring plate 3a to move towards the direction of approaching the second movable spring plate 3b, at the same time, the first end 6b1 of the second soaking lever 6b climbs downwards along the sloping surface 5b2 of the second notch 5a1, the second movable spring 3b moves towards the direction close to the first movable spring 3a under the action of the self elasticity, the first movable spring 3a and the second movable spring 3b move oppositely at the same time to realize quick approach, when the first movable spring piece 3a and the second movable spring piece 3b are in contact conduction, the second end 6a2 of the first soaking lever 6a still keeps the trend of pushing the first movable spring piece 3a, no pressure is generated between the second movable spring piece 3b and the second end 6b2 of the second soaking lever 6b, and the second movable spring piece 3b is in the original position.

As the first end 6a1 of the first soaking lever 6a climbs down the ramp surface 5a2 of the first notch 5a1, the first movable spring piece 3a moves away from the second movable spring piece 3b under the action of the self elastic force, at the same time, the first end 6b1 of the second soaking lever 6b climbs upwards along the sloping surface 5b2 of the second notch 5b1, the second end 6b2 of the second soaking lever 6b pushes the second movable spring plate 3b to move away from the first movable spring plate 3a, the first movable spring plate 3a and the second movable spring plate 3b move reversely at the same time, so as to realize quick approach, when the first movable spring piece 3a and the second movable spring piece 3b are separated and disconnected from each other, the second end 6b2 of the second soaking lever 6b keeps tending to push the second movable spring piece 3b, and the first movable spring piece 3a keeps tending to press the second end 6a2 of the first soaking lever 6a under the action of the self-elastic force.

Fig. 15 and 16 show a second preferred embodiment of the present invention.

The present embodiment is different from the first embodiment in that: the first soaking cam 5a is positioned below the second soaking cam 5b, the first soaking lever 6a is positioned below the second soaking lever 6b, the first movable spring piece 3a and the second movable spring piece 3b are arranged at intervals left and right, and the first movable spring piece 3a is closer to the timing main shaft 2 than the second movable spring piece 3 b; the second end 6a2 of the first soaking lever 6a is in direct contact with the first movable spring 3a, and the second soaking lever 6b has a second contact post 6b3 extending downward for contacting the second movable spring 3 b.

It should be noted that in the description of the present embodiment, the terms "front, back", "left, right", "up, down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.