Electric washing timer

Abstract

The utility model provides an electric washing timer which comprises a shell, a movable reed, a left fixed reed and a right fixed reed, the movable reed, the left fixed reed and the right fixed reed are arranged in the shell, a switching mechanism is further arranged in the shell and comprises a program switching plate, the program switching plate is provided with a pair of abutting surfaces, and the abutting surfaces elastically abut against the left fixed reed and the right fixed reed respectively. The device is characterized in that the contact surface comprises an upper straight line segment, a lower straight line segment and an inclined segment connecting the upper straight line segment and the lower straight line segment; the switching mechanism further comprises an adjusting shaft, the adjusting shaft is movably matched with the program switching plate, the program switching plate can be moved up and down by rotating the adjusting shaft, and the abutting positions of the left fixed reed and the right fixed reed on the abutting face are adjusted. The left fixed reed and the right fixed reed of the washing timer can elastically abut against any position on the inclined section, so that various washing programs can be set on the inclined section, and the situation that interference or not-in-place abutting occurs when the washing programs are added through a step-shaped abutting face in the prior art is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, especially to an electric washing timer. BACKGROUND

[0002] The washing machine is usually provided with a washing timer, which mainly controls the intermittent forward and reverse rotation of the washing impeller driven by the washing motor, plays a role in controlling the water flow and its rotation time, and thus obtains the corresponding washing effect. In order to meet different washing requirements, the washing machine is usually provided with different gears such as strong washing, weak washing, etc. The washing timer can switch the gears of the washing machine by changing the forward and reverse rotation time of the washing impeller.

[0003] The existing washing timer structure is shown in Figure 1 , which includes a moving spring sheet 1', a left fixed spring sheet 2', and a right fixed spring sheet 3'. A connecting rod 4' is movably installed on the moving spring sheet 1'. The connecting rod 4' makes left and right reciprocating motion by means of an eccentric wheel 5' and drives the moving spring sheet 1' to swing left and right, so that the contacts on the moving spring sheet 1' make on / off action with the contacts of the left fixed spring sheet 2' and the contacts of the right fixed spring sheet 3', thereby driving the intermittent forward and reverse rotation of the washing impeller. The time of on / off action of the contacts on the moving spring sheet 1' with the contacts of the left fixed spring sheet 2' and the contacts of the right fixed spring sheet 3', i.e. the time of forward and reverse rotation of the impeller, depends on the distance between the contacts of the moving spring sheet 1' and the contacts of the left fixed spring sheet 2' and the contacts of the right fixed spring sheet 3' when the moving spring sheet 1' is at rest. This distance can be adjusted by a conversion mechanism 6'. Specifically, as shown in Figures 1-3 , the conversion mechanism 6' includes a program conversion plate 61', an adjusting shaft 62', a limiting cam 63', and a limiting spring sheet 64'. A pair of contact surfaces 611' with three steps are provided on the program conversion plate 61'. The left fixed spring sheet 2' and the right fixed spring sheet 3' are elastically contacted with the contact surfaces 611' by means of a contact part 7'. The adjusting shaft 62' is engaged with the program conversion plate 61' and can move the program conversion plate 61' by rotating the adjusting shaft 62', so that the left fixed spring sheet 2' and the right fixed spring sheet 3' are elastically touched on different steps, i.e. the distance between the left fixed spring sheet 2' and the right fixed spring sheet 3' and the moving spring sheet 1' when they are at rest can be changed, thereby changing the contact time of the contacts and the time of forward and reverse rotation of the impeller, so that the washing machine is switched between strong washing, medium washing, and weak washing. The limiting cam 63' is provided on the adjusting shaft 62' and is limited by the limiting spring sheet 64'. A limiting surface corresponding to each step of the contact surface 611' is provided on the cam, so that the left fixed spring sheet 2' and the right fixed spring sheet 3' can be limited at the position of being elastically touched on any step. The Chinese utility model patent with the patent number CN92215401.5 (the authorized announcement number CN2114217U) discloses a mechanical timer switch.

[0004] However, due to the diversity of user needs, the washing machine needs more washing functions to meet the washing needs of different materials and different dirt levels. If the above washing timer is increased, the number of steps of the abutting surface 611' needs to be increased, such as four washing functions, and the abutting surface 611' needs to have four steps, and the increase in the number of steps means that the length of each step is shortened. Since the abutting portion 7' of the left fixed spring sheet 2' and the right fixed spring sheet 3' has a certain volume, if it is abutted at the edge of the step, the position of the interference or abutment will not be in place, which will affect the stability of the operation of the washing machine. When the washing function is increased, the length of the step will be too short and the abutting portion 7' will not be able to stably abut in the central position of the step. In summary, in order to realize more washing functions on the washing machine, the existing washing timer needs to be improved. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a washing timer which can provide multiple washing functions for a washing machine and can stably operate.

[0006] The utility model adopts the technical scheme that the electric washing timer comprises a shell, a moving spring sheet, a left fixed spring sheet and a right fixed spring sheet arranged in the shell, the contact points of the left fixed spring sheet and the right fixed spring sheet are kept at a preset distance from the contact point of the moving spring sheet, a conversion mechanism for adjusting the preset distance to convert the washing program is further arranged in the shell, the conversion mechanism comprises a program conversion plate, the program conversion plate has a pair of abutting surfaces, and the abutting surfaces are elastically abutted with the left fixed spring sheet and the right fixed spring sheet respectively, characterized in that the abutting surfaces comprise an upper straight line segment, a lower straight line segment and an inclined segment connecting the upper straight line segment and the lower straight line segment, the preset distance when the left fixed spring sheet and the right fixed spring sheet abut on the upper straight line segment is smaller than the preset distance when the left fixed spring sheet and the right fixed spring sheet abut on the lower straight line segment, and the conversion mechanism further comprises an adjusting shaft, the adjusting shaft is movably connected with the program conversion plate, and the program conversion plate can be moved up and down and the abutting positions of the left fixed spring sheet and the right fixed spring sheet on the abutting surfaces can be adjusted by rotating the adjusting shaft.

[0007] In order to movably connect the adjusting shaft and the program conversion plate, preferably, an adjusting hole is arranged on the program conversion plate, a rack portion is arranged in the adjusting hole, a gear portion corresponding to the rack portion is arranged on the adjusting shaft, and the adjusting shaft is installed in the adjusting hole through the meshing of the gear portion and the rack portion. Through the meshing connection mode, the meshing of the gear portion and the rack portion converts the rotation of the adjusting shaft into the up-and-down movement of the program conversion plate, so that the abutting positions of the abutting portions of the left fixed spring sheet and the right fixed spring sheet on the abutting surfaces can be regulated.

[0008] In order to limit the contact portions of the left and right fixed spring blades to the corresponding positions of each gear, preferably, a limiting assembly is further included, which comprises a limiting cam and a limiting spring blade. The limiting cam is arranged on the adjusting shaft and above the gear portion, and has at least two limiting surfaces which can selectively abut against the limiting spring blade to limit the adjusting shaft. Each limiting surface of the limiting cam corresponds to a washing program. When the operator rotates the adjusting shaft to adjust the preset distance between the contact portions of the left and right fixed spring blades and the contact portion of the movable spring blade, i.e., when the adjusting shaft is adjusted to the required washing program, the limiting surface corresponding to the washing program abuts against the limiting spring blade to limit the adjusting shaft, i.e., to limit the program conversion plate to the corresponding position of the washing program, so as to avoid the program conversion plate from moving up and down due to vibration during work and affecting normal washing. Meanwhile, the limiting cam and the limiting spring blade can provide a damping feeling when the adjusting shaft is rotated, and generate friction vibration when the limiting surface is switched, so as to improve the feeling when the adjusting shaft is rotated.

[0009] Further, each limiting surface is connected by an arc transition. The arc transition can reduce the rotation resistance when the adjusting shaft is rotated to switch the limiting surface abutting against the limiting spring blade, and further improve the feeling when the adjusting shaft is rotated.

[0010] In order to mount the adjusting shaft in the shell, preferably, a mounting hole is arranged on the shell, and a mounting portion capable of being inserted into the mounting hole is arranged on the adjusting shaft and below the gear portion.

[0011] In order to facilitate the up-and-down movement of the program conversion plate, preferably, a sliding groove is arranged on the shell, and the bottom portion of the program conversion plate is protruded downward to form a sliding portion which is in sliding cooperation with the sliding groove and can slide in the sliding groove when the adjusting shaft is rotated. The sliding groove limits the movement direction of the program conversion plate when the adjusting shaft is rotated, and only allows the program conversion plate to slide along the sliding groove, so as to improve the stability of the program conversion plate during the up-and-down movement.

[0012] In order to enable the left and right fixed spring blades to abut against the abutting surface, preferably, an abutting portion is arranged on each of the left and right fixed spring blades, and the abutting portion always abuts against the abutting surface. The abutting portion can always abut against the abutting surface by virtue of the elastic deformation of the spring blade.

[0013] In order to realize the intermittent forward and reverse rotation of the washing impeller during washing, preferably, a driving mechanism is further arranged in the shell, which is used to drive the movable spring blade to swing left and right, so as to switch the contact portion of the movable spring blade between the contact state and the disconnection state with the contact portions of the left and right fixed spring blades. In this way, when the movable spring blade swings left under the driving of the driving mechanism, the contact portion of the movable spring blade contacts with the contact portion of the left fixed spring blade to rotate forward, and when the movable spring blade swings right, the contact portion of the movable spring blade contacts with the contact portion of the right fixed spring blade to rotate reversely. The movable spring blade swings left and right under the driving of the driving mechanism to realize the forward and reverse rotation of the washing impeller alternately.

[0014] In order to realize the driving mechanism driving dynamic spring piece left and right swing, preferably, the driving mechanism includes a driving source, an eccentric wheel arranged at the power output end of the driving source, and a transmission rod connected with the eccentric wheel, the other end of the transmission rod is connected with the dynamic spring piece, the driving source drives the eccentric wheel to rotate and drives the transmission rod to make left and right reciprocating motion, so that the dynamic spring piece swings left and right.

[0015] Compared with the prior art, the washing timer has the advantages that the abutting surface of the program conversion plate is designed as an upper straight line segment, a lower straight line segment and an inclined segment connecting the upper straight line segment and the lower straight line segment, due to the arrangement of the inclined segment, the left fixed spring piece and the right fixed spring piece can elastically abut at any position on the inclined segment, so that a plurality of washing programs can be arranged on the inclined segment, and the interference or the out-of-position abutting of the stepped abutting surface in the prior art when increasing the washing programs is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a state diagram that the abutting part abuts on the first step of the abutting surface in the background technology of the utility model;

[0017] Figure 2 It is a state diagram that the abutting part abuts on the second step of the abutting surface in the background technology of the utility model;

[0018] Figure 3 It is a state diagram that the abutting part abuts on the third step of the abutting surface in the background technology of the utility model;

[0019] Figure 4 It is a structure diagram of the embodiment (strong washing) of the utility model;

[0020] Figure 5 It is a structure diagram of the program conversion plate in the embodiment of the utility model;

[0021] Figure 6 It is a structure diagram of another view of the program conversion plate in the embodiment of the utility model;

[0022] Figure 7 It is an explosion diagram of the embodiment of the utility model;

[0023] Figure 8 It is a structure diagram of the adjusting shaft in the embodiment of the utility model;

[0024] Figure 9 It is a structure diagram of the embodiment (regular washing) of the utility model;

[0025] Figure 10 It is a structure diagram of the embodiment (middle washing) of the utility model;

[0026] Figure 11 The structural schematic diagram of the embodiment (weak washing) of the utility model. DETAILED DESCRIPTION

[0027] The utility model will be described in further detail below in combination with the embodiment of the drawings.

[0028] As Figures 4-11 shown, it is a preferred embodiment of the utility model.

[0029] The electric washing timer of the embodiment is used for controlling the intermittent forward and reverse rotation of the washing impeller or the drum in the washing machine, which comprises a shell 1 and a moving spring piece 2, a left fixed spring piece 3 and a right fixed spring piece 4 arranged in the shell 1, and each spring piece is provided with a contact 5, the moving spring piece 2 can swing left and right under the drive of a driving mechanism 9, so that the contact 5 of the moving spring piece 2 can be switched between the contact state and the disconnection state with the contact 5 of the left fixed spring piece 3 and the right fixed spring piece 4 respectively. When the moving spring piece 2 swings left and contacts with the left fixed spring piece 3, the washing impeller or the drum rotates forward, when the moving spring piece 2 swings right and contacts with the right fixed spring piece 4, the washing impeller or the drum rotates reversely, in this way, the moving spring piece 2 swings left and right by means of the driving mechanism 9, the contact 5 of the moving spring piece 2 is alternated between contacting with the contact 5 of the left fixed spring piece 3 and contacting with the contact 5 of the right fixed spring piece 4, so as to realize the alternation between the forward and reverse rotation of the washing impeller or the drum. The specific structure of the driving mechanism 9 is shown in Figure 4 , which comprises a driving source, an eccentric wheel 91 arranged at the power output end of the driving source, and a transmission rod 92 connected with the eccentric wheel 91, the other end of the transmission rod 92 is connected with the moving spring piece 2, the driving source drives the eccentric wheel 91 to rotate and drives the transmission rod 92 to reciprocate left and right, so as to make the moving spring piece 2 swing left and right.

[0030] In order to make the contact 5 of the moving spring 2 switch between the contact state and the disconnection state with the contact 5 of the left fixed spring 3 and the right fixed spring 4, the contact 5 of the moving spring 2 and the contact 5 of the left fixed spring 3 and the right fixed spring 4 are kept a preset distance, when the moving spring 2 swings between the preset distance, the contact 5 of the moving spring 2 and the contact 5 of the left fixed spring 3 and the right fixed spring 4 are in the disconnection state and the washing impeller or the drum is in the stop state, only when the swing angle reaches the contact 5 of the left fixed spring 3 or the contact 5 of the right fixed spring 4, the washing impeller or the drum can be rotated. When the preset distance is large, the moving spring 2 needs to swing a large amplitude to make the contact 5 contact with the contact 5 of the left fixed spring 3 and the right fixed spring 4; when the preset distance is small, the moving spring 2 only needs to swing a small amplitude to make the contact 5 contact with the contact 5 of the left fixed spring 3 and the right fixed spring 4. That is to say, under the same swing amplitude of the moving spring 2, when the preset distance is large, the contact time of the contact 5 is short, that is, the rotation time of the washing impeller or the drum is short, when the preset distance is small, the contact time of the contact 5 is long, that is, the rotation time of the washing impeller or the drum is short. According to the rotation time of the washing impeller or the drum, the washing machine can be divided into different washing programs such as strong washing, medium washing and weak washing. In order to make the washing timer have multiple washing programs, the embodiment is provided with a conversion mechanism 6 in the shell 1 for adjusting the preset distance to convert the washing program, the conversion mechanism 6 comprises a program conversion plate 61 and an adjusting shaft 62, wherein the program conversion plate 61 has a pair of abutting surfaces 611, the left fixed spring 3 and the right fixed spring 4 are provided with abutting portions 8 which always abut against the abutting surfaces 611 and are elastically abutted against the corresponding abutting surfaces 611 respectively. The abutting surfaces 611 are designed to have the shape of comprising an upper straight line segment 611a, a lower straight line segment 611b and an inclined segment 611c connecting the upper straight line segment 611a and the lower straight line segment 611b, the preset distance between the contact 5 of the left fixed spring 3 and the right fixed spring 4 when the left fixed spring 3 and the right fixed spring 4 abut against the upper straight line segment 611a is smaller than the preset distance between the contact 5 of the left fixed spring 3 and the right fixed

[0031] Referring toFigure 5 The program conversion plate 61 is provided with an adjusting hole 612, and a rack portion 613 is arranged in the adjusting hole 612. A gear portion 621 corresponding to the rack portion 613 is arranged on the adjusting shaft 62, and the adjusting shaft 62 is installed in the adjusting hole 612 through the meshing of the gear portion 621 and the rack portion 613. The rotation of the adjusting shaft 62 is converted into the up-down movement of the program conversion plate 61 through the meshing connection, so that the abutting position of the abutting portions 8 of the left fixed spring leaf 3 and the right fixed spring leaf 4 on the abutting surface 611 can be adjusted. In addition, referring to Figures 6-7 The shell 1 is further provided with a mounting hole 11 and a sliding groove 12. The adjusting shaft 62 is provided with a mounting portion 622 below the gear portion 621, which can be inserted into the mounting hole 11. The mounting of the mounting hole 11 into the mounting portion 622 limits the adjusting shaft 62, so that the adjusting shaft 62 does not tilt when it is rotated. The bottom portion of the program conversion plate 61 is protruded downward to form a sliding portion 614, which is slidably connected with the sliding groove 12 and can slide in the sliding groove 12 when the adjusting shaft 62 is rotated. The sliding groove 12 limits the movement direction of the program conversion plate 61, so that the program conversion plate 61 can only move up and down along the sliding groove 12, thereby improving the stability of the program conversion plate 61 when it moves.

[0032] In order to limit the abutting portions 8 of the left fixed spring leaf 3 and the right fixed spring leaf 4 in the corresponding positions of each gear position after the washing program is converted, the shell 1 is further provided with a limiting assembly 7. The limiting assembly 7 includes a limiting cam 71 and a limiting spring leaf 72. The limiting cam 71 is arranged on the adjusting shaft 62 and above the gear portion 621. The limiting cam 71 is provided with a limiting surface 711 corresponding to each washing program. The limiting surfaces 711 are arc transitioned between each other. The limiting surface 711 selectively abuts against the limiting spring leaf 72 to limit the adjusting shaft 62. Referring to Figure 8 In the embodiment, the limiting surface 711 is provided with four limiting surfaces corresponding to strong washing, regular washing, medium washing and weak washing. The limiting cam 71 is arranged on the adjusting shaft 62. When the adjusting shaft 62 is rotated to convert the washing program, the limiting cam 71 is rotated and the limiting surface 711 corresponding to the washing program is limited by the limiting spring leaf 72, so that the washing timer can stably operate under the washing program.

[0033] In summary, the washing timer of the embodiment has four washing programs:

[0034] Strong washing: referring to Figure 4 The left fixed spring leaf 3 and the right fixed spring leaf 4 abut against the upper straight line segment 611a of the abutting surface 611. The preset distance between the contact point 5 of the moving spring leaf 2 and the contact point 5 of the left fixed spring leaf 3 and the right fixed spring leaf 4 is the smallest. When the moving spring leaf 2 swings left and right, the contact point 5 is in contact for a relatively long time. The washing impeller or the drum rotates for a relatively long time when it is reversed. The washing strength of the strong washing is the strongest.

[0035] Regular washing: referring toFigure 9 , rotating the adjusting shaft 62 makes the left and right fixed spring blades 3, 4 abut against the upper part of the inclined section 611c of the abutting surface 611, the preset distance between the contact points 5 of the moving spring blade 2 and the left and right fixed spring blades 3, 4 is increased, the contact point 5 contact time of the moving spring blade 2 is shortened when it swings left and right, and the rotation time of the washing impeller or the drum is also correspondingly shortened when it rotates in the forward and reverse directions, and the washing intensity of the regular washing is weaker than that of the strong washing;

[0036] middle washing: refer to Figure 10 , rotating the adjusting shaft 62 makes the left and right fixed spring blades 3, 4 abut against the lower part of the inclined section 611c of the abutting surface 611, the preset distance between the contact points 5 of the moving spring blade 2 and the left and right fixed spring blades 3, 4 is further increased, the contact point 5 contact time of the moving spring blade 2 is further shortened when it swings left and right, and the rotation time of the washing impeller or the drum is also correspondingly shortened when it rotates in the forward and reverse directions, and the washing intensity of the middle washing is weaker than that of the strong washing;

[0037] weak washing: refer to Figure 11 , rotating the adjusting shaft 62 makes the left and right fixed spring blades 3, 4 abut against the lower straight section 611b of the abutting surface 611, the preset distance between the contact points 5 of the moving spring blade 2 and the left and right fixed spring blades 3, 4 is maximum, the contact point 5 contact time of the moving spring blade 2 is shorter when it swings left and right, and the rotation time of the washing impeller or the drum is also shorter when it rotates in the forward and reverse directions, and the washing intensity of the weak washing is the weakest.

[0038] The reverse rotation adjusting shaft 62 can also convert the washing program in the order of weak washing-middle washing-regular washing-strong washing.

[0039] Of course, more washing programs can also be set on the inclined section 611c, and the number of limit surfaces 711 is correspondingly increased, so that the washing machine has five, six or even more washing programs.

[0040] It should be noted that in the description of the embodiment, the terms "front, rear", "left, right", "inner, outer", "upper, lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. An electric washing timer, comprising a housing (1) and a movable spring (2), a left fixed spring (3), and a right fixed spring (4) disposed within the housing (1), wherein the contacts (5) of the left fixed spring (3) and the right fixed spring (4) are all kept at a preset distance from the contacts (5) of the movable spring (2), and the housing (1) is further provided with a switching mechanism (6) for adjusting the preset distance to switch washing programs, the switching mechanism (6) comprising a program switching plate (61), the program switching plate (61) having a pair of contact surfaces (611), the contact surfaces (611) elastically contacting the left fixed spring (3) and the right fixed spring (4) respectively, characterized in that: The contact surface (611) includes an upper straight segment (611a), a lower straight segment (611b), and an inclined segment (611c) connecting the upper straight segment (611a) and the lower straight segment (611b). The preset distance between the left fixed spring (3) and the right fixed spring (4) when they contact the upper straight segment (611a) is less than the preset distance when they contact the lower straight segment (611b). The conversion mechanism (6) also includes an adjustment shaft (62). The adjustment shaft (62) is movably engaged with the program conversion plate (61) and can move the program conversion plate (61) up and down by rotating the adjustment shaft (62) to adjust the contact position of the left fixed spring (3) and the right fixed spring (4) on the contact surface (611).

2. The electric washing timer according to claim 1, characterized in that: The program conversion plate (61) is provided with an adjustment hole (612), and a rack part (613) is provided in the adjustment hole (612). The adjustment shaft (62) is provided with a gear part (621) that cooperates with the rack part (613). The adjustment shaft (62) is installed in the adjustment hole (612) by meshing with the rack part (613).

3. The electric washing timer according to claim 2, characterized in that: It also includes a limiting component (7), which includes a limiting cam (71) and a limiting spring (72). The limiting cam (71) is disposed on the adjusting shaft (62) and located above the gear part (621). The limiting cam (71) has at least two limiting surfaces (711), which can selectively abut against the limiting spring (72) to limit the adjusting shaft (62).

4. The electric washing timer according to claim 3, characterized in that: The various limiting surfaces (711) are connected by a circular arc transition.

5. The electric washing timer according to claim 2, characterized in that: The housing (1) is provided with a mounting hole (11), and the adjusting shaft (62) is provided with a mounting part (622) that can be inserted into the mounting hole (11). The mounting part (622) is located below the gear part (621).

6. The electric washing timer according to claim 1, characterized in that: The housing (1) is provided with a sliding groove (12), and the bottom part of the program conversion plate (61) protrudes downward to form a sliding part (614). The sliding part (614) slides in cooperation with the sliding groove (12) and can slide in the sliding groove (12) as the adjustment shaft (62) rotates.

7. The electric washing timer according to claim 1, characterized in that: Both the left fixed spring (3) and the right fixed spring (4) are provided with a contact part (8), and the contact part (8) is always in contact with the contact surface (611).

8. The electric washing timer according to claim 1, characterized in that: The housing (1) is also provided with a drive mechanism (9) for driving the moving spring (2) to swing left and right so that the contact (5) on the moving spring (2) and the contact (5) of the left fixed spring (3) and the right fixed spring (4) switch between the contact state and the open state.

9. The electric washing timer according to claim 8, characterized in that: The drive mechanism (9) includes a drive source, an eccentric wheel (91) located at the power output end of the drive source, and a transmission rod (92) connected to the eccentric wheel (91). The other end of the transmission rod (92) is connected to the moving spring (2). The drive source drives the eccentric wheel (91) to rotate and drives the transmission rod (92) to reciprocate left and right, thereby causing the moving spring (2) to swing left and right.

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