CN212161655U - Micro-switch - Google Patents
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- CN212161655U CN212161655U CN202021030300.1U CN202021030300U CN212161655U CN 212161655 U CN212161655 U CN 212161655U CN 202021030300 U CN202021030300 U CN 202021030300U CN 212161655 U CN212161655 U CN 212161655U
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Abstract
The embodiment of the utility model provides a low-voltage apparatus switch is related to, in particular to micro-gap switch, include: the device comprises a shell, an upper contact plate assembly, a lower contact plate assembly, a rack, a push rod assembly, an upper contact bridge, a lower contact bridge and an elastic mechanism, wherein the upper contact plate assembly, the lower contact plate assembly, the rack, the push rod assembly, the upper contact bridge, the lower contact bridge and the elastic mechanism are arranged in the shell; the upper contact plate assembly and the lower contact plate assembly are oppositely arranged in the shell, and the rack is positioned between the upper contact plate assembly and the lower contact plate assembly; the push rod component can slide along the opposite direction of the upper contact plate component and the lower contact plate component; the elastic mechanism is connected with the push rod assembly and is used for driving the rack to slide together when the push rod assembly slides; the upper contact bridge is arranged on one side of the rack opposite to the upper contact plate assembly, and the lower contact bridge is arranged on one side of the rack opposite to the lower contact plate assembly; the elastic mechanism is used for gradually pushing the rack to slide towards the upper contact plate assembly after the push rod assembly slides to exceed the standard stroke, and the lower contact bridge is disconnected from the lower contact plate assembly. Compared with the prior art, the phenomenon of adhesion between the fixed contact and the movable contact of the switch can be eliminated in time.
Description
Technical Field
The embodiment of the utility model provides a low-voltage apparatus switch is related to, in particular to micro-gap switch.
Background
The microswitch is a switch with very small force, in which external mechanical force acts on an action reed through a transmission element to quickly connect or disconnect a fixed contact and a movable contact at the tail end of the microswitch. When the microswitch is used, under certain severe working conditions, the microswitch generates heat often due to large overload, and in severe cases, the fixed contact and the movable contact at the tail end are adhered, so that the phenomenon that an internal transmission element cannot act and is clamped is caused, and certain potential safety hazards are caused.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model aims to provide a micro-gap switch can make micro-gap switch can satisfy the user demand of harsh operating mode for the switch can relieve the terminal fixed contact of switch and the phenomenon of taking place to glue even between the movable contact immediately under the high load.
In order to achieve the above object, an embodiment of the present invention provides a micro switch, including:
a housing;
an upper contact plate assembly and a lower contact plate assembly disposed within the housing; the upper contact plate assembly and the lower contact plate assembly are oppositely arranged in the shell;
the frame is arranged in the shell and positioned between the upper contact plate assembly and the lower contact plate assembly;
the push rod assembly is arranged in the shell and can slide along the opposite direction of the upper contact plate assembly and the lower contact plate assembly;
the elastic mechanism is arranged in the rack, is connected with the push rod assembly and is used for driving the rack to move together when the push rod assembly slides along the direction opposite to the upper contact plate assembly and the lower contact plate assembly;
the upper contact bridge is arranged on one side of the rack opposite to the upper contact plate assembly and is used for electrically abutting against the upper contact plate assembly when the rack slides to a first preset position in the direction of the upper contact plate assembly;
the lower contact bridge is arranged on one side of the rack opposite to the lower contact plate assembly and is used for electrically abutting against the lower contact plate assembly when the rack slides to a second preset position towards the direction of the lower contact plate assembly;
from go up the contact plate subassembly arrive on the direction of lower contact plate subassembly, elastic mechanism is used for push rod subassembly slides to surpassing standard stroke after, promotes gradually the frame towards the direction of going up the contact plate subassembly slides, will lower contact bridge with the disconnection of lower contact plate subassembly.
Compared with the prior art, when in actual application, when contacting bridge and lower contact plate subassembly electrical property support the back down, if under high load, it is firm to appear gluing because of high temperature results in the movable contact on the lower contact bridge and the fixed contact on the lower contact plate subassembly, and when causing push rod subassembly the jamming phenomenon to appear, the accessible is applyed the effort to push rod subassembly, make push rod subassembly can slide to surpassing standard stroke in the casing, and then make elastic mechanism can promote the frame and slide towards the direction of contact plate subassembly up, in order to force the separation with the movable contact on the lower contact bridge and the fixed contact on the lower contact plate subassembly, when improving the micro-gap switch security, can also prolong micro-gap switch's life.
Further, the elastic mechanism includes:
the first elastic component and the second elastic component are movably arranged in the rack respectively, and are symmetrically arranged by taking the axis of the push rod component as a symmetric axis;
one end of the first elastic assembly is connected with the push rod assembly, the other end of the first elastic assembly is connected with the rack, one end of the second elastic assembly is connected with the push rod assembly, and the other end of the second elastic assembly is connected with the rack; and the push rod assembly is used for driving the first elastic assembly and the second elastic assembly to rotate towards opposite directions after sliding to exceed a standard stroke in the direction from the upper contact plate assembly to the lower contact plate assembly, so that the first elastic assembly and the second elastic assembly push the rack to slide towards the direction of the upper contact plate assembly.
Further, the first elastic member includes:
a first spring;
a first upper support comprising: the first upper rod body is inserted into the first spring, and the first upper supporting block is arranged at the end part of the first upper rod body;
a first lower support, comprising: the first lower rod body is inserted into the first spring, and the first lower supporting block is arranged at the end part of the first lower rod body;
the first upper supporting block and the first lower supporting block are arranged opposite to each other and are respectively abutted against the first spring, the first upper supporting block is movably connected with the rack, and the first lower supporting block is movably connected with the push rod assembly;
the second elastic component includes:
a second spring;
a second upper support comprising: the second upper rod body is inserted into the second spring, and the second upper supporting block is arranged at the end part of the second upper rod body;
a second lower support, comprising: the second lower rod body is inserted into the second spring, and the second lower supporting block is arranged at the end part of the second lower rod body;
the second upper supporting block and the second lower supporting block are arranged opposite to each other and are respectively abutted against the second spring, the second upper supporting block is movably connected with the rack, and the second lower supporting block is movably connected with the push rod assembly.
Further, the first upper rod body and the first lower rod body are slidably connected with each other along the rebound direction of the first spring;
the second upper rod body and the second lower rod body are connected with each other in a sliding mode along the rebounding direction of the second spring.
Further, the push rod assembly includes: the push rod comprises a push rod body and a driving block arranged on the push rod body; wherein the driving block includes in an axial direction perpendicular to the push rod body: the first connecting part is movably connected with the first lower supporting block, and the second connecting part is movably connected with the second lower supporting block;
the frame includes: the rack body is provided with a cavity, and a third connecting part and a fourth connecting part are arranged in the cavity; the third connecting part and the fourth connecting part are symmetrically arranged by taking the axis of the push rod body as a symmetry axis; the third connecting part is movably connected with the first upper supporting block, and the fourth connecting part is movably connected with the second upper supporting block.
Furthermore, a first upper arc-shaped groove is formed in one side, away from the first lower support block, of the first upper support block, and a first lower arc-shaped groove is formed in one side, away from the first upper support block, of the first lower support block;
a second upper arc-shaped groove is formed in one side, away from the second lower supporting block, of the second upper supporting block, and a second lower arc-shaped groove is formed in one side, away from the second upper supporting block, of the second lower supporting block;
the first connecting portion is a first sharp portion inserted into the first lower arc-shaped groove, the second connecting portion is a second sharp portion inserted into the second lower arc-shaped groove, the third connecting portion is a third sharp portion inserted into the first upper arc-shaped groove, and the fourth connecting portion is a fourth sharp portion inserted into the second upper arc-shaped groove.
Further, said first sharp, said second sharp, said third sharp and said fourth sharp are all V-shaped sharp;
the diameter of the notch of the first upper arc-shaped groove, the diameter of the notch of the first lower arc-shaped groove, the diameter of the notch of the second upper arc-shaped groove and the diameter of the notch of the second lower arc-shaped groove are all larger than the diameter of the root of the V-shaped sharp part.
Further, the upper contact bridge includes:
the upper cover plate is arranged on one side of the rack opposite to the upper contact plate component;
the first upper moving contact and the second upper moving contact are oppositely arranged on the upper cover plate; the first upper moving contact and the second upper moving contact are used for respectively and electrically abutting against the upper contact plate assembly when the rack slides to a first preset position towards the upper contact plate assembly;
the lower contact bridge includes:
the lower cover plate is arranged on one side of the rack opposite to the lower contact plate assembly;
the first lower moving contact and the second lower moving contact are oppositely arranged on the lower cover plate; the first lower moving contact and the second lower moving contact are used for respectively abutting against the lower contact plate assembly when the rack slides to a second preset position towards the direction of the lower contact plate assembly.
Further, the upper contact plate assembly includes:
a first upper contact plate and a second upper contact plate disposed opposite to each other along an opposite direction of the first upper movable contact and the second upper movable contact;
a first upper fixed contact and a second upper fixed contact; the first upper fixed contact is arranged on one side of the first upper contact plate opposite to the lower contact plate assembly and is used for being electrically abutted against the first upper moving contact; the second upper fixed contact is arranged on one side of the second upper contact plate opposite to the lower contact plate assembly and is used for being electrically abutted against the second upper moving contact;
the lower contact plate assembly includes:
a first lower contact plate and a second lower contact plate disposed opposite to each other in an opposite direction of the first lower movable contact and the second lower movable contact;
a first lower fixed contact and a second lower fixed contact; the first lower fixed contact is arranged on one side of the first lower contact plate relative to the upper contact plate component and used for electrically abutting against the first lower movable contact; the second lower fixed contact is arranged on one side, opposite to the upper contact board assembly, of the second lower contact board and used for being abutted against the second lower movable contact electrically.
Furthermore, a first upper V-shaped groove is formed in one side, opposite to the first lower fixed contact, of the first upper fixed contact, a second upper V-shaped groove is formed in one side, opposite to the second lower fixed contact, of the second upper fixed contact, a first lower V-shaped groove is formed in one side, opposite to the first upper fixed contact, of the first lower fixed contact, and a second lower V-shaped groove is formed in one side, opposite to the second upper fixed contact, of the second lower fixed contact;
the surface of the first upper moving contact, the surface of the second upper moving contact, the surface of the first lower moving contact and the surface of the second lower moving contact are all convex cambered surfaces.
Drawings
Fig. 1 is an exploded schematic view of a micro-switch according to a first embodiment of the present invention;
fig. 2 is an exploded view of the push rod assembly, the upper contact bridge, the lower contact bridge, the elastic mechanism and the frame according to the first embodiment of the present invention;
fig. 3 is a schematic structural view of a micro switch according to a first embodiment of the present invention;
fig. 4 is a left side view schematically illustrating a micro switch according to a first embodiment of the present invention;
fig. 5 is a schematic right view of a micro switch according to a first embodiment of the present invention;
fig. 6 is an assembly view of the micro switch according to the first embodiment of the present invention;
fig. 7 is an exploded view of the elastic mechanism according to the first embodiment of the present invention.
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 micro switch, as shown in fig. 1 and 6, including: the device comprises a shell 1, an upper contact plate assembly 2 and a lower contact plate assembly 3 which are arranged in the shell 1, a frame 4 which is arranged in the shell 1, a push rod assembly 5 which is arranged in the shell 1, an upper contact bridge 6 and a lower contact bridge 7 which are arranged in the shell 1, and an elastic mechanism 8 which is arranged in the frame 4.
As shown in fig. 1 and 6, the upper contact plate assembly 2 and the lower contact plate assembly 3 are oppositely disposed in the housing 1. Next, the frame 4 is disposed in the housing 1 between the upper contact plate assembly 2 and the lower contact plate assembly 3, and as shown in fig. 1, 2, 3 and 6, the elastic mechanism 8 is connected to the frame 4 and the push rod assembly 5, respectively. The push rod assembly 5 is adapted to slide in the opposite direction of the upper contact plate assembly 2 and the lower contact plate assembly 3 under the action of an external force, and to drive the frame 4 to slide together between the upper contact plate assembly 2 and the lower contact plate assembly 3 through the elastic mechanism 8 when the push rod assembly slides in the opposite direction of the upper contact plate assembly 2 and the lower contact plate assembly 3. In addition, as shown in fig. 2, 3 and 6, the upper contact bridge 6 is disposed on a side of the frame 4 opposite to the upper contact plate assembly 2, and the upper contact bridge 6 can be used to electrically abut against the upper contact plate assembly 2 when the frame 4 slides to a first predetermined position in a direction toward the upper contact plate assembly 2. And the lower contact bridge 7 is arranged on one side of the frame 4 relative to the lower contact plate assembly 3, and the lower contact bridge 7 is used for electrically abutting against the lower contact plate assembly 3 when the frame 7 slides to a second preset position in the direction of the lower contact plate assembly 3. And, as shown in fig. 2, 3 and 6, in the direction from the upper contact plate assembly 2 to the lower contact plate assembly 3, the elastic mechanism 8 is used to gradually push the frame 4 to slide toward the upper contact plate assembly 2 after the push rod assembly 5 slides beyond the standard stroke, so that the lower contact bridge 7 can be disconnected from the lower contact plate assembly 3.
It can be seen from the above that, in practical application, the lower contact bridge 7 and the lower contact plate assembly 3 can be electrically abutted to be in an energized state, so that when the lower contact bridge 7 and the lower contact plate assembly 3 are electrically abutted to each other, for example, under a high load, a movable contact on the lower contact bridge 7 and a fixed contact on the lower contact plate assembly 3 are adhered to each other due to a high temperature, and the push rod assembly 5 is stuck, the push rod assembly 5 can slide in the housing 1 to exceed a standard stroke by applying an additional acting force to the push rod assembly 5, that is, the push rod assembly 5 reaches an over-travel position, the push rod assembly 5 can rotate the rotating shaft 10, and further, the acting force applied to the housing 4 by the elastic mechanism 8 is changed from top to bottom to top, so as to push the housing 4 to slide in a direction towards the upper contact plate assembly 2, the rack 4 is jacked upwards to forcibly separate the movable contact on the lower contact bridge 7 from the fixed contact on the lower contact plate component 3, so that the safety of the micro switch is improved, and the service life of the micro switch can be prolonged.
Specifically, as shown in fig. 2, 4, and 6, in the present embodiment, the elastic mechanism 8 includes: a first resilient component 81 and a second resilient component 82. And, first elastic component 81 and second elastic component 82 all movably set up in frame 4 to use the axis of push rod assembly 5 as the symmetry axis, the symmetry sets up. Also, one end of the first elastic member 81 may be connected to the push rod member 5 while the other end of the first elastic member 81 is connected to the frame 4, and one end of the second elastic member 82 may be connected to the push rod member 5 while the other end of the second elastic member 82 is connected to the frame 4. In practical applications, as shown in fig. 1, 2 and 6, the push rod assembly 5 is used to drive the first elastic assembly 81 and the second elastic assembly 82 to rotate towards the opposite direction after sliding to exceed the standard stroke from the upper contact plate assembly 2 to the lower contact plate assembly 3, so that the first elastic assembly 81 and the second elastic assembly 82 can push the frame 4 to slide towards the upper contact plate assembly 2.
Meanwhile, in order to enable the push rod assembly 5 to directly drive the first elastic assembly 81 and the second elastic assembly 82 to rotate relative to each other after sliding beyond the standard stroke. As shown in fig. 1, 2 and 6, in the present embodiment, the first elastic member 81 includes: a first spring 811, a first upper support 812 and a first lower support 813. As shown in fig. 3 and 6, the first upper support 812 includes: a first upper rod body 8121 inserted into the first spring 811, and a first upper supporting block 8122 provided at an end of the first upper rod body 8121. And the corresponding first lower support 813 comprises: a first lower rod body 8131 inserted into the first spring 811, and a first lower support block 8132 provided at an end of the first lower rod body 8131. And, as shown in fig. 6, the first upper support block 8122 and the first lower support block 8132 are disposed opposite to each other, and the first upper support block 8122 is movably connected to the frame 4, and the first lower support block 8132 is movably connected to the push rod assembly 5, and the first upper rod body 8121 and the first lower rod body 8131 are inserted into the first spring 811 in opposite directions to each other, so that the first upper support block 8122 and the first lower support block 8132 can be abutted to the first spring 811, respectively,
accordingly, the second elastic component 82 may adopt the same structural design as the first elastic component 81, and specifically, as shown in fig. 1, 2 and 5, the second elastic component 82 includes: a second spring 821, a second upper support 822, and a second lower support 823. Wherein the second upper supporter 822 includes: a second upper rod 8221 inserted into the second spring 821, and a second upper support block 8222 disposed at an end of the second upper rod 8221. And the corresponding second lower support 823 comprises: a second lower rod 8231 inserted into the second spring 821, and a second lower support block 8232 disposed at an end of the second lower rod 8231. Also, as shown in fig. 6, the second upper supporting block 8222 and the second lower supporting block 8232 are disposed opposite to each other, and the second upper supporting block 8222 is movably connected to the frame 4, and the second lower supporting block 8232 is movably connected to the push rod assembly 5, and the second upper rod body 8221 and the second lower rod body 8231 are inserted into the second spring 821 in opposite directions to each other, so that the second upper supporting block 8222 and the second lower supporting block 8232 can be abutted to the second spring 821, respectively.
Note that, in the present embodiment, as shown in fig. 1 and 2, the push rod assembly 5 includes: the push rod comprises a push rod body 51 and a driving block 52 arranged on the push rod body 51. As shown in fig. 6, the push rod body 51 is used to connect the push button 9 of the micro switch, and as shown in fig. 1, the driving block 52 includes, along an axis perpendicular to the push rod body 51: a first connecting part 521 movably connected with the first lower support block 8132, and a second connecting part 522 movably connected with the second lower support block 8232. In addition, in the present embodiment, the chassis 4 includes: a frame body 42 having a cavity 41, a third connecting portion 43 and a fourth connecting portion 44 disposed in the cavity 41. The third connecting portion 43 and the fourth connecting portion 44 are symmetrically arranged by taking the axis of the push rod body 51 as a symmetry axis, the third connecting portion 43 is movably connected with the first upper supporting block 8122, and the fourth connecting portion 44 is movably connected with the second upper supporting block 8222.
Specifically, as shown in fig. 1, 2, 3, and 7, a side of the first upper support block 8122 facing away from the first lower support block 8132 defines a first upper arcuate slot 8123, and a side of the first lower support block 8132 facing away from the first upper support block 8122 defines a first lower arcuate slot 8133. Similarly, a side of second upper support block 8222 facing away from second lower support block 8232 defines a second upper arcuate slot 8223, and a side of second lower support block 8232 facing away from second upper support block 8222 defines a second lower arcuate slot 8233. Meanwhile, the first connection portion 521 is a first sharp portion inserted into the first lower arc-shaped slot 8133, the second connection portion 522 is a second sharp portion inserted into the second lower arc-shaped slot 8233, the third connection portion 43 is a third sharp portion inserted into the first upper arc-shaped slot 8123, and the fourth connection portion 44 is a fourth sharp portion inserted into the second upper arc-shaped slot 8223.
As can be seen from this, in the practical application process, as shown in fig. 1, fig. 2, fig. 3, fig. 6 and fig. 7, the first upper supporting block 8122 and the first lower supporting block 8132 can always respectively abut against the third connecting portion 43 and the first connecting portion 521 under the resilience of the first spring 811, and at the same time, the first elastic component 81 can be positioned in the cavity 41 by means of the first upper arc-shaped groove 8123 on the first upper supporting block 8122 and the first lower arc-shaped groove 8133 on the first lower supporting block 8132. And the second upper supporting block 8222 and the second lower supporting block 8232 can always respectively abut against the fourth connecting portion 44 and the second connecting portion 522 under the resilient action of the second spring 821. In addition, when the push rod body 51 moves, the positioning of the second elastic component 82 in the cavity 41 can be realized through the first upper arc-shaped slot 8123 on the second upper supporting block 8222 and the second lower arc-shaped slot 8233 on the second lower supporting block 8232. Therefore, when the push rod body 51 normally slides along the direction opposite to the upper contact plate assembly 2 and the lower contact plate assembly 3, the push rod body 51 can normally drive the frame body 42 to move together with the first elastic assembly 81 and the second elastic assembly 82 by means of the connection relationship between the driving block 52 and the first elastic assembly 81 and the second elastic assembly 82, and when the push rod body 51 slides beyond the standard stroke, the frame body 42 cannot move downwards because the lower contact bridge 7 is electrically abutted against the lower contact plate assembly 3, so that the first elastic assembly 81 and the second elastic assembly 82 can be forced to rotate relative to each other, and the driving force of the first elastic assembly 81 and the second elastic assembly 82 to the frame body 42 is directed to the upper contact plate assembly 2, so that when the push rod body 51 slides beyond the preset stroke, the frame body 42 can be gradually driven to move in the direction of the upper contact plate assembly 2, to separate the lower contact bridge 7 from the lower contact plate assembly 3.
In addition, in order to ensure that the first elastic component 81 and the second elastic component 82 do not interfere with each other when rotating in the cavity 41, as shown in fig. 1 and 2, in the present embodiment, the first sharp portion, the second sharp portion, the third sharp portion, and the fourth sharp portion are all V-shaped sharp portions, and the notch diameter of the first upper arc-shaped slot 8123, the notch diameter of the first lower arc-shaped slot 8133, the notch diameter of the second upper arc-shaped slot 8223, and the notch diameter of the second lower arc-shaped slot 8233 are all greater than the root diameter of the V-shaped sharp portions, so that the first elastic component 81 and the second elastic component 82 can rotate in the cavity 41 by a certain angle. In addition, in order to improve the moving performance of the first elastic assembly 81 and the second elastic assembly 82, as shown in fig. 1, 6 and 7, preferably, the first upper rod 8121 and the first lower rod 8131 are slidably connected to each other along the rebound direction of the first spring 811, and the second upper rod 8221 and the second lower rod 8231 are slidably connected to each other along the rebound direction of the second spring 821, so that the first upper support 812 and the first lower support 813, and the second upper support 822 and the second lower support 823 can be slidably guided to each other during the rotation, thereby further improving the rotation performance of the first elastic assembly 81 and the second elastic assembly 82.
In addition, in the present embodiment, as shown in fig. 2, 4, and 5, the lower contact bridge 7 includes: the lower cover plate 71 is disposed on a side of the frame 4 opposite to the lower contact plate assembly 3, and the first lower movable contact 72 and the second lower movable contact 73 are disposed on the lower cover plate 71, and the first lower movable contact 72 and the second lower movable contact 73 are configured to respectively electrically abut against the lower contact plate assembly 3 when the frame 4 slides to a second preset position in a direction toward the lower contact plate assembly 3. Likewise, the upper contact bridge 6 may include: an upper cover plate 61 disposed at a side of the frame 4 opposite to the upper contact plate assembly 2, a first upper moving contact 62 and a second upper moving contact 63 disposed opposite to the upper cover plate 61. And, the first upper moving contact 62 and the second upper moving contact 63 are used for respectively and electrically abutting against the upper contact plate assembly 2 when the frame 4 slides to the first preset position in the direction of the upper contact plate assembly 2.
Accordingly, the upper contact plate assembly 2, as shown in fig. 3, 4, 5 and 6, includes: the first and second upper contact plates 21 and 22, and the first and second upper contact plates 21 and 22 are disposed opposite to each other in the opposite direction of the first and second upper movable contacts 62 and 63 within the housing 1. In addition, the upper contact plate assembly 2 further includes: a first upper fixed contact 23 and a second upper fixed contact 24, and the first upper fixed contact 23 is disposed on a side of the first upper contact plate 21 opposite to the lower contact plate assembly 3, the first upper fixed contact 23 is used for electrically abutting against the first upper movable contact 62, and the second upper fixed contact 24 is disposed on a side of the second upper contact plate 22 opposite to the lower contact plate assembly 3, the second upper fixed contact 24 is used for electrically abutting against the second upper movable contact 63.
In addition, as shown in fig. 1, 3, 4, 5, and 6, the lower contact plate assembly 3 includes: the first and second lower contact plates 31 and 32, and the first and second lower contact plates 31 and 32 are disposed opposite to each other in an opposite direction of the first and second lower movable contacts 72 and 73 within the housing 1. In addition, the lower contact plate assembly 3 further includes: a first lower fixed contact 33 and a second lower fixed contact 34, and the first lower fixed contact 33 is disposed at a side of the first lower contact plate 31 opposite to the upper contact plate assembly 2, the first lower fixed contact 33 is used for electrically abutting against the first lower movable contact 72, and the second lower fixed contact 34 is disposed at a side of the second lower contact plate 32 opposite to the upper contact plate assembly 2, the second lower fixed contact 34 is used for electrically abutting against the second lower movable contact 73.
In the present embodiment, as shown in fig. 4 and 5, the first upper fixed contact 23 is preferably provided with a first upper V-shaped groove 231 on the side facing the first lower fixed contact 33, the second upper fixed contact 24 is preferably provided with a second upper V-shaped groove 241 on the side facing the second lower fixed contact 34, the first lower fixed contact 33 is preferably provided with a first lower V-shaped groove 331 on the side facing the first upper fixed contact 23, and the second lower fixed contact 34 is preferably provided with a second lower V-shaped groove 341 on the side facing the second upper fixed contact 24. And the surfaces of the corresponding first upper movable contact 62, second upper movable contact 63, first lower movable contact 72 and second lower movable contact 73 are convex arc surfaces. Therefore, it is easy to see that, the first upper movable contact 62 and the second upper movable contact 63 can be guided by the first upper V-shaped groove 231 and the second upper V-shaped groove 241, respectively, so that when the frame 4 moves to the first preset position in the direction of the upper contact plate assembly 2, the first upper movable contact 62 can accurately and electrically abut against the two groove walls of the first upper V-shaped groove 231, and the second upper movable contact 63 can accurately and electrically abut against the two groove walls of the second upper V-shaped groove 241, further ensuring reliable connection and disconnection between the first upper movable contact 62 and the second upper movable contact 63 and the first upper fixed contact 23 and the second upper fixed contact 24 under small load and large load, respectively.
Similarly, when the frame 4 moves to the second preset position in the direction toward the lower contact plate assembly 3, the first lower movable contact 72 and the second lower movable contact 73 can be guided by the first lower V-shaped groove 331 and the second lower V-shaped groove 341, respectively, so that the first lower movable contact 72 can accurately and electrically abut against two groove walls of the first lower V-shaped groove 331, and the second lower movable contact 73 can accurately and electrically abut against two groove walls of the second lower V-shaped groove 341, thereby further ensuring reliable connection and disconnection between the first lower movable contact 72 and the second lower movable contact 73 and the first lower fixed contact 33 and the second lower fixed contact 34 under small load and large load.
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 (10)
1. A micro-switch, comprising:
a housing;
an upper contact plate assembly and a lower contact plate assembly disposed within the housing; the upper contact plate assembly and the lower contact plate assembly are oppositely arranged in the shell;
the frame is arranged in the shell and positioned between the upper contact plate assembly and the lower contact plate assembly;
the push rod assembly is arranged in the shell and can slide along the opposite direction of the upper contact plate assembly and the lower contact plate assembly;
the elastic mechanism is arranged in the rack, is connected with the push rod assembly and is used for driving the rack to slide together when the push rod assembly slides along the direction opposite to the upper contact plate assembly and the lower contact plate assembly;
the upper contact bridge is arranged on one side of the rack opposite to the upper contact plate assembly and is used for electrically abutting against the upper contact plate assembly when the rack slides to a first preset position in the direction of the upper contact plate assembly;
the lower contact bridge is arranged on one side of the rack opposite to the lower contact plate assembly and is used for electrically abutting against the lower contact plate assembly when the rack slides to a second preset position towards the direction of the lower contact plate assembly;
from go up the contact plate subassembly arrive on the direction of lower contact plate subassembly, elastic mechanism is used for push rod subassembly slides to surpassing standard stroke after, promotes gradually the frame towards the direction of going up the contact plate subassembly slides, will lower contact bridge with the disconnection of lower contact plate subassembly.
2. The microswitch of claim 1, wherein the resilient mechanism comprises:
the first elastic component and the second elastic component are movably arranged in the rack respectively, and are symmetrically arranged by taking the axis of the push rod component as a symmetric axis;
one end of the first elastic assembly is connected with the push rod assembly, the other end of the first elastic assembly is connected with the rack, one end of the second elastic assembly is connected with the push rod assembly, and the other end of the second elastic assembly is connected with the rack; and the push rod assembly is used for driving the first elastic assembly and the second elastic assembly to rotate towards opposite directions after sliding to exceed a standard stroke in the direction from the upper contact plate assembly to the lower contact plate assembly, so that the first elastic assembly and the second elastic assembly push the rack to slide towards the direction of the upper contact plate assembly.
3. The microswitch of claim 2, wherein the first resilient component comprises:
a first spring;
a first upper support comprising: the first upper rod body is inserted into the first spring, and the first upper supporting block is arranged at the end part of the first upper rod body;
a first lower support, comprising: the first lower rod body is inserted into the first spring, and the first lower supporting block is arranged at the end part of the first lower rod body;
the first upper supporting block and the first lower supporting block are arranged opposite to each other and are respectively abutted against the first spring, the first upper supporting block is movably connected with the rack, and the first lower supporting block is movably connected with the push rod assembly;
the second elastic component includes:
a second spring;
a second upper support comprising: the second upper rod body is inserted into the second spring, and the second upper supporting block is arranged at the end part of the second upper rod body;
a second lower support, comprising: the second lower rod body is inserted into the second spring, and the second lower supporting block is arranged at the end part of the second lower rod body;
the second upper supporting block and the second lower supporting block are arranged opposite to each other and are respectively abutted against the second spring, the second upper supporting block is movably connected with the rack, and the second lower supporting block is movably connected with the push rod assembly.
4. The microswitch of claim 3, wherein the first upper lever and the first lower lever are slidably connected to each other in a rebound direction of the first spring;
the second upper rod body and the second lower rod body are connected with each other in a sliding mode along the rebounding direction of the second spring.
5. The microswitch of claim 3, wherein the push rod assembly comprises: the push rod comprises a push rod body and a driving block arranged on the push rod body; wherein the driving block includes in an axial direction perpendicular to the push rod body: the first connecting part is movably connected with the first lower supporting block, and the second connecting part is movably connected with the second lower supporting block;
the frame includes: the rack body is provided with a cavity, and a third connecting part and a fourth connecting part are arranged in the cavity; the third connecting part and the fourth connecting part are symmetrically arranged by taking the axis of the push rod body as a symmetry axis; the third connecting part is movably connected with the first upper supporting block, and the fourth connecting part is movably connected with the second upper supporting block.
6. The microswitch of claim 5, wherein a first upper arcuate slot is formed in a side of the first upper support block facing away from the first lower support block, and a first lower arcuate slot is formed in a side of the first lower support block facing away from the first upper support block;
a second upper arc-shaped groove is formed in one side, away from the second lower supporting block, of the second upper supporting block, and a second lower arc-shaped groove is formed in one side, away from the second upper supporting block, of the second lower supporting block;
the first connecting portion is a first sharp portion inserted into the first lower arc-shaped groove, the second connecting portion is a second sharp portion inserted into the second lower arc-shaped groove, the third connecting portion is a third sharp portion inserted into the first upper arc-shaped groove, and the fourth connecting portion is a fourth sharp portion inserted into the second upper arc-shaped groove.
7. The microswitch of claim 6, wherein the first, second, third and fourth sharp portions are each V-shaped sharp portions;
the diameter of the notch of the first upper arc-shaped groove, the diameter of the notch of the first lower arc-shaped groove, the diameter of the notch of the second upper arc-shaped groove and the diameter of the notch of the second lower arc-shaped groove are all larger than the diameter of the root of the V-shaped sharp part.
8. The microswitch of claim 1, wherein the upper contact bridge comprises:
the upper cover plate is arranged on one side of the rack opposite to the upper contact plate component;
the first upper moving contact and the second upper moving contact are oppositely arranged on the upper cover plate; the first upper moving contact and the second upper moving contact are used for respectively and electrically abutting against the upper contact plate assembly when the rack slides to a first preset position towards the upper contact plate assembly;
the lower contact bridge includes:
the lower cover plate is arranged on one side of the rack opposite to the lower contact plate assembly;
the first lower moving contact and the second lower moving contact are oppositely arranged on the lower cover plate; the first lower moving contact and the second lower moving contact are used for respectively abutting against the lower contact plate assembly when the rack slides to a second preset position towards the direction of the lower contact plate assembly.
9. The microswitch of claim 8, wherein the upper contact plate assembly comprises:
a first upper contact plate and a second upper contact plate disposed opposite to each other along an opposite direction of the first upper movable contact and the second upper movable contact;
a first upper fixed contact and a second upper fixed contact; the first upper fixed contact is arranged on one side of the first upper contact plate opposite to the lower contact plate assembly and is used for being electrically abutted against the first upper moving contact; the second upper fixed contact is arranged on one side of the second upper contact plate opposite to the lower contact plate assembly and is used for being electrically abutted against the second upper moving contact;
the lower contact plate assembly includes:
a first lower contact plate and a second lower contact plate disposed opposite to each other in an opposite direction of the first lower movable contact and the second lower movable contact;
a first lower fixed contact and a second lower fixed contact; the first lower fixed contact is arranged on one side of the first lower contact plate relative to the upper contact plate component and used for electrically abutting against the first lower movable contact; the second lower fixed contact is arranged on one side, opposite to the upper contact board assembly, of the second lower contact board and used for being abutted against the second lower movable contact electrically.
10. The microswitch of claim 9, wherein a side of the first upper stationary contact opposite the first lower stationary contact defines a first upper V-shaped groove, a side of the second upper stationary contact opposite the second lower stationary contact defines a second upper V-shaped groove, a side of the first lower stationary contact opposite the first upper stationary contact defines a first lower V-shaped groove, and a side of the second lower stationary contact opposite the second upper stationary contact defines a second lower V-shaped groove;
the surface of the first upper moving contact, the surface of the second upper moving contact, the surface of the first lower moving contact and the surface of the second lower moving contact are all convex cambered surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030300.1U CN212161655U (en) | 2020-06-08 | 2020-06-08 | Micro-switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030300.1U CN212161655U (en) | 2020-06-08 | 2020-06-08 | Micro-switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212161655U true CN212161655U (en) | 2020-12-15 |
Family
ID=73701969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021030300.1U Withdrawn - After Issue CN212161655U (en) | 2020-06-08 | 2020-06-08 | Micro-switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212161655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524735A (en) * | 2020-06-08 | 2020-08-11 | 上海飞力勋铖电气科技有限公司 | Micro-switch |
-
2020
- 2020-06-08 CN CN202021030300.1U patent/CN212161655U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524735A (en) * | 2020-06-08 | 2020-08-11 | 上海飞力勋铖电气科技有限公司 | Micro-switch |
| CN111524735B (en) * | 2020-06-08 | 2024-06-04 | 上海飞力勋铖电气科技有限公司 | Micro-switch |
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