CN209981063U - Switch controlled by rocker type contact - Google Patents

Abstract

The utility model relates to a switch of seesaw contact control sets up the seesaw rotation on the supporting part through the control activity for act on the movable contact spring, be used for realizing the forced control of quick-action switch, for example force the disconnection or force the closure, and can guarantee the effective reset of on-off state. Because the area of contact of wane and supporting part is little, and the rotation of wane is controlled through the promotion of control part and spacing portion, avoids moreover because the dust influences the not enough that can't reset that the slip probably caused between the part, can guarantee that the switch is stable to work effectively. The wane is the activity setting, surrounds the location through shell, movable reed and spacing portion or catch bar, need not set up the fixed point rotating-structure of pivot, axle sleeve class, and the assembly is simpler, improves production efficiency, can also avoid the fracture damage. The reverse space of stepping down of supporting part can produce reciprocal swing when spacing portion control wane resets and form the buffering, avoids because the wane forms the noise that the striking and produce with the supporting part.

Description

Switch controlled by rocker type contact

Technical Field

The utility model relates to the technical field of switches, more specifically say, relate to a switch of seesaw type contact control.

Background

The switch is widely applied to control circuits of various devices, and a large number of common electromechanical switches adopt a contact forced opening mechanism to mechanically push contacts to open in order to improve the opening capacity of switch contacts, so that the adhered contacts are forcibly opened by fully utilizing a larger external driving force. As shown in fig. 1 to 3, in the contact forced opening mechanism of the prior art, a pressing block 101 drives a sliding wheel 102 to slide in a sliding groove 103, and a movable contact 104 is pried open by the sliding wheel 102, so that a movable contact 105 and a fixed contact 106 are forced to be opened; when the pressing piece 101 releases the sliding wheel 102, the sliding wheel 102 is pushed in the opposite direction by the force F1 generated by the elastic return action of the movable spring 104, and the sliding wheel 102 returns to the state shown in fig. 1.

As shown in fig. 4, fine particles such as dust fall into the sliding groove 103, that is, between the sliding groove 103 and the sliding wheel 102, such as metal splashes generated during the contact opening and closing process, or debris generated by the friction of the insulating material. Because the particles are irregular in shape and have a plurality of edges or spikes at fine positions, the particles are supported between the two sliding surfaces and are difficult to roll, and further the sliding friction force F of the sliding wheel 102 sliding in the sliding groove 103 is greatly increased, when the sliding friction force F is greater than the acting force F1 generated by the elastic reset of the movable spring 104, the sliding wheel 102 cannot be pushed to reset only by the elastic reset action of the movable spring 104, so that the movable contact 105 and the fixed contact 106 are suspended and do not contact, namely the switch keeps an open state, and the hidden danger that the switch cannot be automatically reset and closed exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provide one kind and can effectively avoid piling up the switch that causes the wane formula contact control of losing efficacy that resets because of the dust.

The technical scheme of the utility model as follows:

a rocker type contact controlled switch comprises a shell, a movable contact spring, a movable contact, a fixed contact, a push rod, a rocker and a supporting part, wherein the movable contact spring is matched with the fixed contact; the supporting part is provided with a convex tip part towards the wane, the wane is movably abutted against the convex tip part to form a supporting point, and the wane rotates around the supporting point; the catch bar is provided with control part, and control part acts on the control end of wane, and the drive end of wane acts on the movable contact spring, controls the movable contact spring motion.

Preferably, the catch bar is further provided with a limiting part, the control end of the rocker is located between the control part and the limiting part, and the limiting part supports and limits the control end of the rocker.

Preferably, the support portion is located one side that the strong point faces the control end of wane and offers the positive abdication space that supplies the wane pivoted.

Preferably, the control part pushes the rocker to rotate, the control end of the rocker moves towards the forward yielding space until the rocker abuts against the supporting part in the forward yielding space, and the rocker stops rotating.

Preferably, the supporting portion is located one side that the supporting point faces the control end of the rocker and is provided with an inclined plane, and after the rocker rotates in place in the forward abdicating space, the inclined plane and the rocker form surface contact.

Preferably, the supporting part is located one side of strong point towards the drive end of wane and offers the space of stepping down in the reverse direction, forms the stepping down to the wane, realizes the buffering.

Preferably, when the rocker is reset excessively or swings back and forth, the reverse yielding space yields the driving end of the rocker.

Preferably, the structural center of gravity is located between the supporting point and the control part, and the control end of the rocker keeps the movement trend of rotating towards the limiting part.

Preferably, in the initial state, the control end of the rocker abuts against the limiting part in a limiting manner, and the driving end of the rocker is not in contact with the movable spring.

Preferably, the control part and the limiting part are respectively arranged at different height positions along the height direction of the push rod and are plate structures formed by the lateral wall of the push rod extending transversely.

The utility model has the advantages as follows:

seesaw contact control's switch, set up the seesaw rotation on the supporting part through the control activity for the forced control that realizes the snap switch, for example force the disconnection or force the closure, and can guarantee the effective reset of on-off state. Because the area of contact of wane and supporting part is little, and the rotation of wane is controlled through the promotion of control part and spacing portion, avoids moreover because the dust influences the not enough that can't reset that the slip between the part probably caused, can guarantee promptly that the switch is stable work effectively, avoids because the dust piles up the hidden danger that causes the unable effective reset of quick-action switch.

The utility model discloses in, the wane is the activity setting, surrounds the location through shell, movable reed and spacing portion or catch bar, need not set up the fixed point rotating-structure of pivot, axle sleeve class, and the assembly is simpler, improves production efficiency, can also avoid the fracture damage. The reverse space of stepping down of supporting part can produce reciprocal swing when spacing portion control wane resets and form the buffering, avoids because the wane forms the noise that the striking and produce with the supporting part.

Drawings

Fig. 1 is a schematic structural view of a contact forced opening mechanism of the prior art (initial state of contact closure);

FIG. 2 is a schematic diagram of a prior art forced disconnect configuration;

fig. 3 is a schematic view of a state of the prior art in which compound closure is performed (F1 is the elastic return force of the movable spring plate);

FIG. 4 is a schematic view showing a state in which dust is accumulated in the prior art (f is a frictional force applied to a sliding wheel);

fig. 5 is a schematic structural diagram of the initial state of the present invention;

fig. 6 is a schematic structural diagram of an intermediate state of the present invention;

FIG. 7 is a schematic structural view of the present invention in a forced-off state;

in the figure: 101 is a push rod, 102 is a sliding wheel, 103 is a sliding groove, 104 is a movable contact spring, 105 is a movable contact, 106 is a stationary contact, 20 is a push rod, 21 is a control part, 22 is a limit part, 30 is a shell, 31 is a support part, 32 is a nose part, 33 is a forward yielding space, 34 is an inclined plane, 35 is a reverse yielding space, 40 is a rocker, 41 is a control end, 42 is a driving end, 50 is a movable contact spring, 51 is a movable contact, 52 is a stationary contact, 60 is a spring, 61 is a spring plate, and 62 is a support.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model discloses a solve prior art's quick-action switch because the dust is piled up and is caused the not enough that can't reset, force the disconnection back to the normally closed contact promptly, can't reset closed, force the closed back to the normally open contact, can't reset the disconnection, provide a switch of rocker contact control, set up the rocker rotation on the supporting part through the control activity, act on the movable contact spring, a forced control for realizing quick-action switch, for example, force the disconnection or force the closure, and can guarantee the effective disconnection that resets of on-off state or the disconnection that resets.

As shown in fig. 5, 6 and 7, the main components of the switch controlled by the rocker contact of the present invention include a housing 30, a movable contact spring 50, a movable contact 51, a stationary contact 52, a push rod 20 and a rocker 40; the rocker 40 movably arranged on the supporting part 31 is controlled to rotate to act on the movable spring plate 50, so that forced control of the quick-acting switch, such as forced opening or forced closing, is realized, and effective resetting of the switch state can be ensured. The utility model discloses in, movable contact 51 and stationary contact 52 adaptation, the drive end 42 and the movable contact spring 50 adaptation of wane 40, based on the synergism of wane 40, control portion 21, control movable contact spring 50 to the motion of drive movable contact spring 50, and then change movable contact 51 and stationary contact 52's state, be about to normally closed contact and force the disconnection, will normally open the contact and force the closure. Specifically, push rod 20 is provided with a control portion 21, control portion 21 acts on a control end 41 of rocker 40, and a drive end 42 of rocker 40 acts on movable spring plate 50 to control the movement of movable spring plate 50.

In this embodiment, two pairs of normally closed contacts and two pairs of normally open contacts are disposed and symmetrically disposed on two sides of the pushing rod 20, respectively, and a pair of normally closed contacts and a pair of normally open contacts on one side of the pushing rod 20 are fixedly connected through the bracket 62, so that synchronous linkage is realized under the fixing action of the bracket 62. Wherein, the rocker 40 is arranged corresponding to the normally closed contact and is used for driving the movable reed 50 of one of the normally closed contacts so as to realize the change of the working state of the whole switch. Specifically, the embodiment further includes a spring plate 61 and a spring 60, where the spring plate 61 is used to support the push rod 20 to ensure stability of the movement process of the push rod 20, and the spring plate 61 and the spring 60 simultaneously reset the push rod 20 upwards. In particular embodiments, actuation end 42 of rocker 40 may directly or indirectly engage movable spring 50. Namely, the driving end 42 of the rocker 40 can be directly abutted against the movable spring 50 to pry the movable spring 50; alternatively, the driving end 42 of the rocker 40 abuts against the bracket 62, and the movable spring 50 is indirectly driven to move by pushing the bracket 62.

The utility model discloses in, shell 30, movable reed 50 and catch bar 20 are surrounded the location and then are realized through the activity setting of wane 40, specifically, catch bar 20 sets up in 41 one side of the control end of wane 40, and wane 40 is spacing between shell 30 and catch bar 20, is surrounding promptly and is obtaining the space in, and wane 40 does not fix a position, can realize the rotation in the space simultaneously.

Because wane 40 is the activity setting, does not have fixed fulcrum to connect, in order to make wane 40 form relatively more stable setting, in this embodiment, catch bar 20 still is provided with spacing portion 22, and control end 41 of wane 40 is located between control portion 21, spacing portion 22, and spacing portion 22 forms the support spacing to control end 41 of wane 40. In the illustrated position, the control portion 21 is configured to move from top to bottom, and press the control end 41 of the rocker 40 downward to drive the rocker 40 to rotate, so that the driving end 42 of the rocker 40 abuts against the movable spring 50 and pries the movable spring 50, and the movable contact 51 of the normally closed contact is disconnected from the stationary contact 52. When the control unit 21 is kept pressed down, the rocker 40 holds the movable contact spring 50 and the movable contact 51 is kept disconnected from the stationary contact 52. Until push rod 20 returns upward, control portion 21 releases the downward pressure on rocker 40, and movable spring 50 applies a downward force to driving end 42 of rocker 40 under its elastic return action, so that rocker 40 rotates reversely, i.e. rocker 40 also starts to return. When the movable contact spring 50 is reset until the movable contact 51 and the fixed contact 52 are closed, the movable contact spring 50 is reset to the position. At this time, the tilting plate 40 is still in the tilted state, and the push rod 20 continues to return upward until the position-limiting portion 22 abuts against the control end 41 of the tilting plate 40, and lifts the tilting plate 40 upward. Until push rod 20 resets to the right position, limiting part 22 keeps supporting control end 41 of rocker 40, and supporting and limiting rocker 40, can guarantee that rocker 40 does not break away from the space enclosed by housing 30, movable spring 50 and push rod 20. Under the supporting action of the limiting part 22, the rocker 40 can be more stably arranged in the space, and the shaking amplitude is reduced.

The shell 30 is provided with the chamber that holds that is used for installing spring 60, and the sufficient spacing portion 22 motion that holds the size in chamber gets into, guarantees the utility model discloses a normal work.

In this embodiment, the control portion 21 and the limiting portion 22 are respectively disposed at different height positions along the height direction of the push rod 20, and are plate structures formed by the lateral walls of the push rod 20 extending transversely. The control part 21 and the limiting part 22 of the plate structure provide a larger contact area for the rocker 40, and the effectiveness and stability of control and support are ensured.

It can be seen that, due to the structure that the control portion 21 and the limiting portion 22 are integrally disposed on the push rod 20, the control portion 21 and the limiting portion 22 move synchronously, and in different working states, i.e. the forced disconnection process and the reset process, it can be seen that the control portion 21 and the limiting portion 22 respectively act on the control end 41 of the rocker 40 in opposite directions, so as to control the rocker 40 to rotate in opposite directions, thereby respectively achieving the forced disconnection and the reset.

For the movable arrangement of the rocker 40, the present embodiment further includes a supporting portion 31, the rocker 40 movably abuts against the supporting portion 31 to form a supporting point, and the rocker 40 rotates around the supporting point without forming a rotating connection with the supporting point at a fixed position. Furthermore, in the working process, the supporting plate is allowed to move to a certain degree, and the problem of breakage of a structure for realizing fixed-point rotation by matching the rotating shaft and the shaft sleeve is completely avoided on the basis of ensuring normal work.

Specifically, the supporting portion 31 is provided with a convex portion 32 facing the rocker 40, and the rocker 40 movably abuts against the convex portion 32 to form a supporting point. The support point in this embodiment is small enough, i.e. the contact area between the nose portion 32 and the rocker 40 is small enough or even negligible, and further, the problem of work failure due to dust accumulation can be completely avoided.

In this embodiment, the center of gravity of the structure is located between the supporting point and the control portion 21, and the control end 41 of the rocker 40 keeps the moving trend of rotating towards the limiting portion 22. When the push rod 20 moves downwards, i.e. the limiting part 22 moves downwards, the control end 41 of the rocker 40 moves downwards under the action of its own weight, and during the preceding stage, the control end 41 of the rocker 40 can remain in contact with the limiting part 22. The rocker 40 stops rotating until the driving end 42 of the rocker 40 contacts the movable spring 50, and at this time, the control end 41 of the rocker 40 is separated from the limiting part 22, and the control part 21 does not exert a downward pressure on the control end 41 of the rocker 40. In the latter process, the control part 21 pushes the control end 41 of the rocker 40 downward, and finally controls the movable contact 51 to be disconnected from the stationary contact 52.

Even if the movable contact spring 50 cannot be pried by the self weight of the rocker 40, a certain acting force can still be formed on the movable contact spring 50, which is not beneficial to reliably closing the movable contact 51 and the stationary contact 52, therefore, in the embodiment, in the initial state of the rocker 40, the control end 41 of the rocker 40 is limited and abutted against the limiting part 22, and the driving end 42 of the rocker 40 is not contacted with the movable contact spring 50. In the illustrated position, the rocker 40 is supported by the limit in the initial state and is horizontally angled.

In order to ensure that the forced disconnection is realized, the rotation angle of the rocker 40 needs to be large enough to ensure that the movable spring 50 can be pried high enough to separate the movable contact 51 from the stationary contact 52 far enough, and besides the height of the convex tip portion 32 for realizing the rotation of the rocker 40, in the present embodiment, the side of the supporting point facing the control end 41 of the rocker 40, where the supporting portion 31 is located, is opened with a positive clearance space 33 for the rotation of the rocker 40. The forward offset space 33 is a space for accommodating the rotation of the rocker 40, and the forward offset space 33 and the nose portion 32 together form a movement space for the control end 41 of the rocker 40 to rotate into.

The forward space 33 of stepping down can also play the role of limiting the rotation angle of the rocker 40 except for increasing the motion space of the control end 41 of the rocker 40, namely enlarging the rotation angle of the rocker 40, and prevent the rocker 40 from being in a vertical state due to excessive rotation, and then fall off from the gap between the push rod 20 and the support part 31, so that the state of being unable to be protected and being broken by force, namely, the state of being broken by force is caused. Specifically, the control portion 21 pushes the rocker 40 to rotate, and the control end 41 of the rocker 40 moves toward the forward abdicating space 33 until abutting against the support portion 31 in the forward abdicating space 33, so that the rocker 40 stops rotating. In this embodiment, the inclined plane 34 is disposed on the side of the supporting point 31 facing the control end 41 of the rocker 40, and after the rocker 40 rotates to a certain position in the forward abdicating space 33, the inclined plane 34 and the rocker 40 form a surface contact. Further, the driving end 42 of the rocker 40 abuts against the movable spring 50, the portion of the rocker 40 close to the control end 41 is in surface contact with the inclined plane 34, and the two abutting positions are opposite in direction, i.e., opposite in direction of force, so that the rocker 40 can stop rotating. Meanwhile, the control end 41 of the rocker 40 abuts against the shaft of the push rod 20, i.e., both ends of the rocker 40 form a limit position, which can effectively prevent the rocker 40 from disengaging.

When the push rod 20 is reset upwards by the elastic reset force of the spring 60 and the elastic sheet 61, the rocker 40 continues to rotate due to inertia when the push rod is reset to the proper position and suddenly stops, and if the space is insufficient, the rocker 40 collides with the support part 31, which causes working noise. In order to avoid at the in-process that resets, wane 40 and the operating noise that the supporting part 31 striking and produced, the utility model provides a buffer function, promptly, supporting part 31 is located the strong point and offers reverse space 35 of stepping down towards one side of the drive end 42 of wane 40, forms the stepping down to wane 40, then the catch bar 20 in-process that resets upwards, spacing portion 22 promotes wane 40 and rotates, when wane 40 resets excessively or reciprocating swing, reverse space 35 of stepping down forms the stepping down to the drive end 42 of wane 40. That is, as the rocker 40 continues to rotate due to inertia during the reset process, the back clearance space 35 can accommodate the drive end 42 of the rocker 40 to rotate in. Simultaneously, the setting of space 35 is stepped down in the reverse direction for wane 40 can form the reciprocal swing of a period, and space 35 is stepped down in the reverse direction promptly can provide the space of stepping down for the reciprocal swing of wane 40, and then realizes the buffering, avoids the production of working noise promptly, also can reduce wane 40's striking number of times and intensity, prolongs wane 40's life-span.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the claims of the present invention, as long as they are in accordance with the technical spirit of the present invention.

Claims (10)

1. A rocker contact controlled switch is characterized by comprising a shell, a movable contact spring, a movable contact, a static contact, a pushing rod, a rocker and a supporting part, wherein the movable contact spring is matched with the static contact; the supporting part is provided with a convex tip part towards the wane, the wane is movably abutted against the convex tip part to form a supporting point, and the wane rotates around the supporting point; the catch bar is provided with control part, and control part acts on the control end of wane, and the drive end of wane acts on the movable contact spring, controls the movable contact spring motion.

2. The rocker-contact controlled switch according to claim 1, wherein the push rod is further provided with a limiting portion, the control end of the rocker is located between the control portion and the limiting portion, and the limiting portion forms a support limit for the control end of the rocker.

3. The rocker contact controlled switch according to claim 1 or 2, wherein the side of the support portion at the support point facing the control end of the rocker is provided with a positive abdicating space for the rotation of the rocker.

4. The rocker-contact controlled switch according to claim 3, wherein the control portion pushes the rocker to rotate, the control end of the rocker moves towards the forward yielding space until the rocker abuts against the support portion in the forward yielding space, and the rocker stops rotating.

5. The rocker-contact controlled switch according to claim 4, wherein the support portion is provided with an inclined plane at a side of the support point facing the control end of the rocker, and the inclined plane and the rocker form a surface contact after the rocker is rotated in place in the forward abdicating space.

6. The rocker contact controlled switch according to claim 1 or 2, wherein the support portion is provided with a reverse abdicating space at a side of the support point facing the driving end of the rocker, to abdicating the rocker, thereby achieving buffering.

7. The rocker contact controlled switch of claim 6, wherein the reverse abdicating space abdicating the actuation end of the rocker when the rocker is over-reset or oscillating back and forth.

8. The rocker-contact controlled switch of claim 1, wherein the structural center of gravity is located between the support point and the control portion, and the control end of the rocker maintains a tendency to move toward the stop portion.

9. The rocker-contact controlled switch according to claim 8, wherein in the initial state of the rocker, the control end of the rocker abuts against the limiting portion in a limiting manner, and the driving end of the rocker does not contact with the movable contact spring.

10. The rocker-type contact-controlled switch according to claim 1, 2, 8 or 9, wherein the control portion and the limiting portion are respectively disposed at different height positions along the height direction of the push rod, and are plate structures formed by lateral extension of the side walls of the push rod.

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