CN212277065U

CN212277065U - Key mechanism and bistable switch

Info

Publication number: CN212277065U
Application number: CN202021030344.4U
Authority: CN
Inventors: 王维东
Original assignee: Shanghai Feili Xuncheng Electric Technology Co ltd
Current assignee: Shanghai Feili Xuncheng Electric Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-01-01
Anticipated expiration: 2030-06-08

Abstract

The embodiment of the utility model provides a low-voltage apparatus switch is related to, in particular to key mechanism and bistable switch, key mechanism includes: a key and a lever; one end of the lever is used for being hinged with a shell of the switch, a pressing key groove is formed in the lever, and the part of the lever, provided with the pressing key groove, is also used for abutting against a driving piece of the bistable switch; the lever is used for rotating relative to the shell by taking a hinge joint part with the shell as a pivot point; the key includes: a connecting part passing through the key slot and a buckling part connected with the connecting part; wherein, connecting portion are used for being connected with the driving piece, and buckling parts exposes and deviates from driving piece one side according to the keyway to be used for with lever mutual lock joint. Compared with the prior art, the working state of the bistable switch can be switched at will by driving the lever mechanism through external force, the switching between the normally open state and the normally closed state is realized, and the switch can continue to work in the required state even if the external force is eliminated.

Description

Key mechanism and bistable switch

Technical Field

The embodiment of the utility model provides a low-voltage apparatus switch is related to, in particular to bistable switch and button mechanism.

Background

The bistable switch, as a switch with very small force, is a switch in which an external driving force acts on an action spring through a transmission element to quickly connect or disconnect a stationary contact and a movable contact at the tail end of the action spring. Since the bistable switch does not have a self-resetting function when in use, namely, the switch can still keep a required state after the external driving force is eliminated, in some specific control fields, the switch still needs to keep the state after the switch is actuated after the external driving force is eliminated, and the switch can not return to the initial state until the external reverse driving force is applied. The current method is to push and pull the lever of the bistable switch for a long time, but the current method can cause fatigue of parts in the switch and generate faults.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model aims to provide a key mechanism and bistable switch can switch over bistable switch's operating condition at will to can effectively avoid long-time press switch and the switch internals that lead to appear tired, produce the trouble.

In order to achieve the above object, an embodiment of the present invention provides a key mechanism, including: a key and a lever;

one end of the lever is hinged with a shell of the bistable switch, a key pressing groove is formed in the lever, and the part of the lever, provided with the key pressing groove, is also used for abutting against a driving piece of the bistable switch; the lever is used for rotating relative to the shell by taking a hinge joint part with the shell as a pivot point;

the key includes: the connecting part penetrates through the key pressing groove, and the buckling part is connected with the connecting part; the connecting part is used for being connected with the driving part, and the buckling part is exposed at one side of the key groove, away from the driving part, and is used for being buckled with the lever;

when the lever rotates to a first preset position towards the direction of the shell, the lever drives the driving piece to switch the bistable switch to a first working state; when the lever rotates to a second preset position in a direction away from the shell, the lever drives the driving piece through the key to switch the bistable switch to a second working state.

Compare with prior art, because key mechanism includes button and lever, the one end of lever is used for articulated with bistable switch's casing simultaneously for this lever can rotate for the casing for the pivot point with the articulated position of casing, offers on the lever simultaneously and presses the keyway, and offers on the lever and press the position of keyway still to be used for the butt on bistable switch's driving piece, and corresponding button includes: wear to locate the connecting portion in pressing the keyway, the buckling parts who links to each other with connecting portion, this buckling parts exposes in the key groove and keeps away from one side of driving piece for with lever mutual lock joint, thereby make the lever rotate to first preset position towards the direction of casing, this lever can drive the driving piece, switch bistable switch to first operating condition, and when the lever rotated to the second preset position towards the direction of keeping away from the casing, this lever drove the driving piece through the button, switch bistable switch to second operating condition. Therefore, the first working state and the second working state of the bistable switch of the embodiment can be switched freely through the lever.

Additionally, the utility model discloses an embodiment has still designed a bistable switch, include: the casing, set up in contact mechanism in the casing, with the driving piece that contact mechanism is connected, just the driving piece has some to expose outside the casing, bistable switch still includes: the key mechanism as described above;

the lever is hinged to the shell, the position, provided with the key pressing groove, of the lever abuts against the driving piece, and the connecting portion of the key is connected with the driving piece.

Further, the lever includes:

a link member, comprising: a first end opposite the housing, a second end opposite the first end;

the first rod piece is hinged with the shell and connected with the first end part of the connecting rod piece;

the second rod piece is connected with the second end part of the connecting rod piece and extends towards the direction far away from the first rod piece;

the key groove is arranged on the first rod piece.

Further, the length of the second rod piece is larger than that of the first rod piece.

Further, the first rod and the second rod are formed by bending and extending the first end and the second end of the connecting rod towards the direction away from each other.

Furthermore, a part of the buckling part protrudes out of the connecting part and is buckled on one side of the lever, which deviates from the driving part.

Furthermore, one side of the driving piece, which is abutted against the lever, is an arc surface.

Drawings

Fig. 1 is a schematic structural view of a key mechanism according to a first embodiment of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

fig. 3 is a schematic view illustrating the assembly of the key mechanism of the first embodiment of the present invention with the housing and the driving member of the bistable switch, respectively;

fig. 4 is a schematic view of a bistable switch according to a first embodiment of the present invention in an original state;

fig. 5 is a schematic diagram illustrating a state of the bistable switch when the lever rotates to the second predetermined position according to the first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a bistable switch according to a second embodiment of the present invention;

fig. 7 is a structural diagram of a lever according to a third embodiment of the present invention;

fig. 8 is a schematic view of the assembly of a lever with a housing and a key of a bistable switch, respectively, according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of a key according to a fourth embodiment of the present invention;

fig. 10 is a schematic view of the assembly of a push button of a fourth embodiment of the present invention with a lever and a driving member of a bistable switch, respectively.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

A first embodiment of the present invention relates to a key mechanism, as shown in fig. 1 and 2, including: a key 1 and a lever 2.

First, as shown in fig. 1, 2 and 3, one end of the lever 2 is used for being hinged to the housing 3 of the bistable switch, the lever 2 is provided with a key pressing groove 21, and the portion of the lever 2 provided with the key pressing groove 21 is also used for abutting against the driving member 4 of the bistable switch, and the lever 2 is used for rotating relative to the housing 3 by taking the hinged portion with the housing 3 as a pivot point.

Next, as shown in fig. 1, 2 and 3, the key 1 includes: a connecting part 11 arranged in the key slot 21 and a buckling part 12 connected with the connecting part 11. The connecting portion 11 is used for connecting with the driving member 4 of the bistable switch, and the fastening portion 12 is exposed on a side of the key groove 21 departing from the driving member 4 and is used for fastening with the lever 2.

In practical application, when the lever 2 rotates to the first predetermined position toward the housing 3, as shown in fig. 5, the lever 2 drives the driving member 4 to switch the bistable switch to the first working state. When the lever 2 rotates to a second predetermined position in a direction away from the housing 3, as shown in fig. 4, the lever 2 drives the driving member 4 via the key 1 to switch the bistable switch to a second working state.

Through the above, it is easy to find that the first working state and the second working state of the bistable switch can be switched at will through the operation of the lever 2, so as to meet the use requirements in the specific control field, and therefore, the fatigue and the fault generation of the internal parts of the switch caused by long-time pressing of the driving piece can be avoided.

Specifically, in the present embodiment, as shown in fig. 1 and 2, the lever 2 includes: a link member 24, a first rod member 22, and a second rod member 23. Wherein, set up on first member 22 according to keyway 21, and connecting rod 24 includes: a first end 211 opposite the housing 3, and a second end 212 opposite the first end 211. And, one end of the first rod 22 is connected with the first end 211 of the link member 24, and the other end of the first rod 22 away from the link member 24 is used for hinging with the housing 3, thereby realizing the rotation of the lever 2 relative to the housing 3. In addition, the second rod 23 is connected to the second end 212 of the link member 24 and extends away from the first rod 23, and in practical application, an upward or downward force can be applied to the first rod 23, so that the lever 2 can rotate about the hinged end of the housing 3, thereby triggering the driving member 4.

In addition, it is worth mentioning that, in the present embodiment, as shown in fig. 1 and 2, the length of the second lever 23 is greater than the length of the first lever 22, so that the moment of the lever 2 can be further increased, so that the lever 2 is more easily rotated, and the first lever 22 and the second lever 23 are formed by bending and extending the first end and the second end of the link member 24 toward a direction away from each other, so that the lever 2 has higher strength.

In addition, in order to realize the fastening between the fastening portion 12 and the lever 2, as shown in fig. 3, 4 and 5, a part of the fastening portion 12 protrudes from the connecting portion 11, so that a clamping area 13 can be formed between the fastening portion 12 and the connecting portion 11, when the key 1 is inserted into the key slot 21, the fastening portion 12 can be restricted from entering the clamping area 13 by the clamping area 13, so that the whole fastening portion 12 can be fastened to the side of the lever 2 departing from the driving member 4, i.e., the side of the first rod 22 departing from the driving member 4. It can be seen that when the lever 2 is rotated in the direction of the housing 3 to a first predetermined position, the driving member 4 can be directly pressed by means of the lever 2, so that the bistable switch is switched to the first operating state, and when the lever 2 is rotated in the direction away from the housing 3 to a second predetermined position, the driving member 4 can be pulled by means of the push button 1, so that the bistable switch is switched to the second operating state.

Also, preferably, in the present embodiment, when the lever 2 receives an external driving force, the lever 2 drives the driving member 4 to move, so that the state transition of the bistable switch is realized. Since the switch has no self-reset function, that is, after the external driving force is removed from the lever 2, the switch can still maintain the required state, but in some specific control fields, the state after the switch is operated needs to be maintained after the external driving force is removed, until the external reverse driving force is applied to the lever 2, the lever 2 can drive the driving member 4 to move reversely, and the switch returns to the initial state. It should be noted that, in practical application, the length of the second rod 23 of the lever 2 may also be designed, so that when the lever 2 rotates to the first preset position, the driving force exerted by the lever 2 on the driving member 4 is smaller than the acting force of the bistable switch supported on the driving member 4, so that the driving member 4 cannot be pressed down by the lever 2, and when the lever 2 rotates to the second preset position, and when the lever 2 exerts a reverse force on the driving member 4, and the driving force is larger than the acting force of the bistable switch supported on the driving member 4, so that the lever 2 can drive the driving member 4 to move in the direction, and by this way, the lever 2 can be effectively fixed at the first preset position and the second preset position.

A second embodiment of the present invention relates to a bistable switch, as shown in fig. 6, including: the contact mechanism comprises a housing 3, a contact mechanism (not shown) arranged in the housing 3, and a driving member 4 connected with the contact mechanism, wherein the driving member 4 is partially exposed out of the housing 3. In addition, the bistable switch of the present embodiment further includes: the key mechanism as described in the first embodiment.

As shown in fig. 6, the lever 2 of the key mechanism is hinged to the housing 3, and a portion of the lever 2, where the key slot 21 is formed, abuts against the driving member 4, and in addition, the connecting portion 11 of the key 1 of the key mechanism is further connected to the driving member 4.

In practical application, when the lever 2 rotates to a first preset position in a direction of the housing 3, the lever 2 drives the driving member 4 to switch the bistable switch to a first working state. When the lever 2 rotates to a second preset position in a direction away from the housing 3, the lever 2 drives the driving member 4 through the key 1 to switch the bistable switch to a second working state. It can be seen from this that, the first operating state and the second operating state of the bistable switch of the present embodiment can be switched at will by operating the lever 2, so as to meet the use requirements in the specific control field, and therefore, fatigue and failure of internal parts of the switch caused by long-time pressing of the driving member can be avoided.

It should be noted that the structures of the lever 2, the key 1, and the housing 3 in the present embodiment are the same as the structures of the lever 2, the key 1, and the housing 3 in the first embodiment, and therefore, the details of the related art regarding the lever 2, the key 1, and the housing 3 in the first embodiment are still valid in the present embodiment, and the technical effects that can be achieved in the first embodiment can also be achieved in the present embodiment, and in order to reduce the redundancy, detailed description thereof is omitted in the present embodiment.

In addition, in order to enable the lever 2 to better press the driving element 4 when rotating to the first preset position, in the embodiment, as shown in fig. 6, one side of the driving element 4, which abuts against the lever 2, is an arc surface, so that the resistance of the lever 2 when rotating to the first preset position can be reduced, the rotation range of the lever 2 is larger, and the interference of the driving element 4 on the rotation of the lever 2 is avoided.

A third embodiment of the present invention relates to a lever, as shown in fig. 7 and 8, one end of the lever 2 is used for being hinged to the housing 3 of the bistable switch, and the lever 2 is further provided with a pressing key slot 21, and the portion of the lever 2 provided with the pressing key slot 21 is also used for abutting against the driving member 4 of the bistable switch.

As shown in fig. 7 and 8, the key slot 21 is used for the key 1 connected to the driving member 4 of the bistable switch to pass through, and the lever 2 is also used for being buckled with the key 1. In practical application, the lever 2 is configured to rotate relative to the housing 3 with a hinge portion of the lever 2 and the housing 3 as a pivot point, and when the lever 2 rotates to a first preset position in a direction toward the housing 3, the driving member 4 is pushed to switch the bistable switch to a first working state, and when the lever 2 rotates to a second preset position in a direction away from the housing 3, the driving member 4 is pulled by the key 1 to switch the bistable switch to a second working state.

It should be noted that the structure of the lever 2 in the present embodiment is the same as the structure of the lever 2 in the first embodiment, and therefore, the details regarding the lever 2 in the first embodiment are still valid in the present embodiment, and the technical effects that can be achieved in the first embodiment can also be achieved in the present embodiment, and the detailed description of the structure of the lever 2 in the present embodiment is omitted to reduce redundancy.

A fourth embodiment of the present invention relates to a key, as shown in fig. 9, including: a connecting part 11 and a buckling part 12 connected with the connecting part 11.

As shown in fig. 10, the connecting portion 11 is used for connecting with the driving member 4 of the bistable switch and is inserted into a key slot 21 formed on the lever 2 hinged to the housing 3 of the bistable switch, and the fastening portion 12 is used for fastening with the lever 2. The push button 1 is used for following the lever 2 to move when the lever 2 rotates relative to the shell 3 and driving the driving piece 4 to switch the working state of the bistable switch.

It should be noted that the structure of the key 1 in the present embodiment is the same as the structure of the key 1 in the first embodiment, and therefore, the details of the related art regarding the key 1 in the first embodiment are still valid in the present embodiment, and the technical effects that can be achieved in the first embodiment can also be achieved in the present embodiment, and the detailed description of the structure of the key 1 in the present embodiment is omitted to reduce the redundancy.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. A key mechanism, comprising: a key and a lever;

2. The key mechanism of claim 1, wherein the lever comprises:

the key groove is arranged on the first rod piece.

3. The key mechanism of claim 2, wherein the second lever has a length greater than a length of the first lever.

4. The key mechanism according to claim 2, wherein said first link and said second link are formed by bending and extending a first end and a second end of said link toward a direction away from each other.

5. The key mechanism of claim 1, wherein the latching portion partially protrudes from the connecting portion and is latched to a side of the lever away from the driving member.

6. A bistable switch, comprising: the casing, set up in contact mechanism in the casing, with the driving piece that contact mechanism is connected, just the driving piece has the part to expose outside the casing, its characterized in that, bistable switch still includes: the key mechanism of any one of claims 1-5;

7. The bistable switch of claim 6, wherein said actuator is curved on the side opposite to said lever.