CN219642707U - Redundant contact type button switch and positive pressure explosion-proof and fire-gas control cabinet - Google Patents
Redundant contact type button switch and positive pressure explosion-proof and fire-gas control cabinet Download PDFInfo
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- CN219642707U CN219642707U CN202222556667.2U CN202222556667U CN219642707U CN 219642707 U CN219642707 U CN 219642707U CN 202222556667 U CN202222556667 U CN 202222556667U CN 219642707 U CN219642707 U CN 219642707U
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- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- -1 light industry Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- Push-Button Switches (AREA)
Abstract
The utility model discloses a redundant contact type button switch and a positive pressure explosion-proof and fire control cabinet, which comprises a shell, a button rod assembly, four first contact pieces, four second contact pieces and a first driving assembly, wherein the shell is provided with a mounting cavity, the button rod assembly comprises a button rod and a first reset spring, the button rod is movably arranged in the mounting cavity, the upper end part of the button rod protrudes out of the shell, the button rod is provided with a moving stroke which moves up and down along the mounting cavity, one end of the first reset spring is connected with the button rod, the other end of the first reset spring is connected with the shell, one end of the first contact piece is hinged to the bottom end of the button rod along the circumferential direction, the other end of the first reset spring is provided with a first contact, the second contact pieces are arranged corresponding to the four first contact pieces, each second contact piece is provided with a second contact, and the first driving assembly is used for driving the first contact pieces to move between a furled position and a unfolded position. The present utility model aims to provide a push button switch with replaceable contacts.
Description
Technical Field
The utility model relates to the technical field of switch control, in particular to a redundant contact type button switch and a positive pressure explosion-proof and fire-gas control cabinet.
Background
The positive pressure explosion-proof electrical control cabinet is a power distribution control system in an explosion-proof area and is widely applied to explosive gas or dust environments such as chemical industry, offshore drilling platforms, metallurgy, medicine, light industry, textile, food, biological engineering, aerospace engineering, military industry and the like.
Because of the functional requirement, the positive pressure explosion-proof electrical control cabinet is provided with a plurality of buttons and switches, however, because the buttons and the change-over switch are required to be operated frequently, the switch contacts are easy to damage, and the damaged switch contacts can be repaired and replaced only by a professional electrician after the switch contacts are opened, so that great delay is caused to the construction period.
Disclosure of Invention
The utility model mainly aims to provide a redundant contact type button switch and a positive pressure explosion-proof and fire-air control cabinet, and aims to provide a button switch with replaceable contacts.
In order to achieve the above object, the present utility model provides a redundant touch type push button switch, comprising:
a housing formed with an installation cavity;
the button rod assembly comprises a button rod and a first reset spring, the button rod is movably arranged in the mounting cavity, the upper end part of the button rod protrudes out of the shell, the button rod is provided with a movement stroke which moves up and down along the mounting cavity, one end of the first reset spring is connected with the button rod, and the other end of the first reset spring is connected with the shell and is used for resetting the button rod which moves downwards upwards;
one end of the first contact piece is hinged to the bottom end of the button rod along the circumferential direction, a first contact is formed at the other end of the first contact piece, and the first contact piece is provided with a furling position close to the button rod and a unfolding position far away from the button rod;
four second contact pieces, corresponding to the four first contact pieces, each of which is formed with a second contact for contacting with the first contact in the unfolded position; the method comprises the steps of,
the first driving assembly is used for driving the first contact piece to move between a furling position and a unfolding position;
and in the four first contact sheet groups and the four second contact sheet groups, two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a common group, the other two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a standby group, two second contact sheets in the common group are connected with two second contact sheets in the standby group in parallel, two first contact sheets in the common group are positioned at an unfolding position, and two first contact sheets in the standby group are positioned at a folding position.
Optionally, the redundant contact type button switch further comprises four first armatures, four first electromagnetic coils and a coil switch;
the four first armatures are respectively arranged on the lower end surfaces of the four first contact pieces;
the four first electromagnetic coils are respectively and correspondingly arranged below the four first armatures;
the coil switch is respectively and electrically connected with the first electromagnetic coil and used for controlling the on-off of the current of the first electromagnetic coil;
the first drive assembly includes the first electromagnetic coil, the first armature, and the coil switch.
Alternatively, the four first electromagnetic coils are connected in series two by two and connected in parallel to each other, so that the four first contact pieces have the same movement stroke two by two.
Optionally, the redundant contact type button switch further comprises four second return springs, wherein one ends of the second return springs are connected with the upper end face of the first contact piece, and the other ends of the second return springs are connected with the button rod and used for driving the first contact piece to return to a folded position;
the first drive assembly includes the second return spring.
Optionally, the shell is made of transparent material.
Optionally, the button rod is telescopically arranged.
Optionally, the button rod comprises a first rod section protruding out of the shell and a second rod section hinged with the first contact piece, the first rod section is formed with a movable cavity with a downward opening, and the second rod section is movably arranged in the movable cavity and has a movement stroke sliding up and down along the movable cavity;
the redundant contact type button switch further comprises a second driving component used for driving the second rod section to move.
Optionally, the redundant contact type button switch further comprises a third reset spring, a second electromagnetic coil and a second armature;
one end of the third reset spring is connected with the top wall of the movable cavity, and the other end of the third reset spring is connected with the second rod section;
the second armature is arranged at the bottom of the second rod section;
the second electromagnetic coil is correspondingly arranged below the second armature;
the second drive assembly includes the third return spring, a second electromagnetic coil, and a second armature.
Optionally, the first contact sheet and the second contact sheet material comprise copper.
The utility model also provides a positive pressure explosion-proof and fire gas control cabinet, which comprises the redundant contact type button switch, wherein the redundant contact type button switch comprises:
a housing formed with an installation cavity;
the button rod assembly comprises a button rod and a first reset spring, the button rod is movably arranged in the mounting cavity, the upper end part of the button rod protrudes out of the shell, the button rod is provided with a movement stroke which moves up and down along the mounting cavity, one end of the first reset spring is connected with the button rod, and the other end of the first reset spring is connected with the shell and is used for resetting the button rod which moves downwards upwards;
one end of the first contact piece is hinged to the bottom end of the button rod along the circumferential direction, a first contact is formed at the other end of the first contact piece, and the first contact piece is provided with a furling position close to the button rod and a unfolding position far away from the button rod;
four second contact pieces, corresponding to the four first contact pieces, each of which is formed with a second contact for contacting with the first contact in the unfolded position; the method comprises the steps of,
the first driving component is used for driving the first contact piece to move between a furling position and a unfolding position.
And in the four first contact sheet groups and the four second contact sheet groups, two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a common group, the other two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a standby group, two second contact sheets in the common group are connected with two second contact sheets in the standby group in parallel, two first contact sheets in the common group are positioned at an unfolding position, and two first contact sheets in the standby group are positioned at a folding position.
In the technical scheme of the utility model, the four first contact pieces and the four second contact pieces are divided into a common group and a standby group, two first contact pieces in the common group are in an unfolding position, two first contact pieces in the standby group are in a folding position, two second contact pieces in the common group are connected with two second contact pieces in the standby group in parallel and are simultaneously connected with a power supply, in daily use, the first contact pieces in the common group are contacted with the second contact pieces so as to enable the two second contact pieces to be conducted to form a communication circuit, when the first contact points of the first contact pieces or the second contact pieces in the common group are damaged, the redundant contact type push button switch can adjust the two first contact pieces in the common group to the folding position by controlling the first driving component, and adjust the two first contact pieces in the standby group to the unfolding position, so that the first contact pieces in the common group are contacted with the second contact pieces in the standby group, and the first contact pieces in the standby group are contacted with the second contact pieces to the other contact pieces, so that the first contact pieces in the common group and the second contact pieces in the standby group are continuously damaged due to the fact that the working period of the first contact pieces and the second contact pieces in the common group are damaged is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a top view of one embodiment of a redundant touch button switch provided by the present utility model;
FIG. 2 is a schematic view of the first contact blade of FIG. 1 in a retracted position;
FIG. 3 is a schematic view of the first contact blade of FIG. 1 in a deployed position;
FIG. 4 is a schematic diagram of an embodiment of the first electromagnetic coil and coil switch of FIG. 2;
fig. 5 is a schematic view of the button stem assembly and the second drive assembly of fig. 2.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Redundant contact type push button switch | 41 | Second contact |
| 1 | Shell body | 5 | First drive assembly |
| 11 | Mounting cavity | 51 | First armature |
| 2 | Push button lever assembly | 52 | First electromagnetic coil |
| 21 | Push button rod | 53 | Coil switch |
| 211 | First pole segment | 54 | Second return spring |
| 212 | Second pole segment | 6 | Second drive assembly |
| 22 | First return spring | 61 | Third return spring |
| 3 | First contact piece | 62 | Second armature |
| 31 | First contact | 63 | Second electromagnetic coil |
| 4 | Second contact piece |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The positive pressure explosion-proof electrical control cabinet is a power distribution control system in an explosion-proof area and is widely applied to explosive gas or dust environments such as chemical industry, offshore drilling platforms, metallurgy, medicine, light industry, textile, food, biological engineering, aerospace engineering, military industry and the like.
Because of the functional requirement, the positive pressure explosion-proof electrical control cabinet is provided with a plurality of buttons and switches, however, because the buttons and the change-over switch are required to be operated frequently, the switch contacts are easy to damage, and the damaged switch contacts can be repaired and replaced only by a professional electrician after the switch contacts are opened, so that great delay is caused to the construction period.
In order to solve the above problems, the present utility model provides a redundant contact type push button switch and a positive pressure explosion-proof and fire control cabinet, and aims to provide a push button switch with replaceable contacts, wherein fig. 1 to 5 are schematic diagrams of a structure of an embodiment of the redundant contact type push button switch provided by the present utility model.
Referring to fig. 1 to 3, the redundant contact type push button switch 100 includes a housing 1, a push button lever assembly 2, four first contact pieces 3, four second contact pieces 4, and a first driving assembly 5, the housing 1 is formed with a mounting cavity 11, the push button lever assembly 2 includes a push button lever 21 and a first return spring 22, the push button lever 21 is movably disposed in the mounting cavity 11, and an upper end portion protrudes out of the housing 1, the push button lever 21 has a moving stroke moving up and down along the mounting cavity 11, one end of the first return spring 22 is connected with the push button lever 21, the other end is connected with the housing 1 to return the push button lever 21 moving downward upward, one end of the first contact piece 3 is hinged to a bottom end of the push button lever 21 in a circumferential direction, the other end is formed with a first contact 31, the first contact piece 3 has a closing position close to the push button lever 21, and a spreading position away from the button bar 21, the second contact pieces 4 are disposed corresponding to four first contact pieces 3, each second contact piece 4 is formed with a second contact 41 for contacting with the first contact piece 31 in the spreading position, the first driving component 5 is used for driving the first contact piece 3 to move between a folding position and a spreading position, wherein, among the four first contact piece 3 groups and the four second contact piece 4 groups, two first contact pieces 3 and two second contact pieces 4 disposed corresponding thereto are disposed as a common group, the other two first contact pieces 3 and two second contact pieces 4 disposed corresponding thereto are disposed as a spare group, two second contact pieces 4 in the common group are connected in parallel with two second contact pieces 4 in the spare group, two first contact pieces 3 in the common group are disposed in the spreading position, the two first contact blades 3 of the spare set are in the folded position.
In the technical solution of the present utility model, four first contact pieces 3 and four second contact pieces 4 are divided into a normal group and a standby group, two first contact pieces 3 in the normal group are in an extended position, two first contact pieces 3 in the standby group are in a retracted position, two second contact pieces 4 in the normal group are connected in parallel with two second contact pieces 4 in the standby group and are simultaneously connected with a power supply, in daily use, the first contact pieces 3 of the normal group are in contact with the second contact pieces 4, so that the two second contact pieces 4 are conducted to form a communication circuit, when the first contact points 31 of the first contact pieces 3 or the second contact points 41 of the second contact pieces 4 of the normal group are damaged, the redundant contact type push button switch 100 can adjust the two first contact pieces 3 in the normal group to the retracted position by controlling the first driving component 5, adjust the two first contact pieces 3 in the standby group to the retracted position, and further delay the first contact pieces 3 in the standby group to the extended position, so that the second contact pieces 4 are prevented from being damaged due to the continuous operation of the normal contact pieces 3 and the standby contact pieces 4.
The first driving unit 5 may drive the first contact plate 3 in various manners, a first magnetic attraction portion may be disposed on the first contact plate 3, a second magnetic attraction portion having a polarity opposite to that of the first magnetic attraction portion may be disposed under the first magnetic attraction portion, and by controlling the alignment and dislocation of the second magnetic attraction portion and the first magnetic attraction portion, the first contact plate 3 may be driven to move away from and close to the button bar 21, the first driving unit 5 may drive the first contact plate 3 by means of an electromagnetic coil, and considering that the internal space of the redundant contact type button switch 100 is limited, a large amount of space needs to be reserved inside the redundant contact type button switch 100 for the second magnetic attraction portion to move, so the present utility model prefers the latter, specifically, in one embodiment of the present utility model, the first driving assembly 5 includes four first electromagnetic coils 52, four first armatures 51, and a coil switch 53, the four first armatures 51 are respectively disposed on the lower end surfaces of the four first contact pieces 3, the four first electromagnetic coils 52 are respectively disposed below the four first armatures 51, the coil switch 53 is electrically connected to the first electromagnetic coils 52, so as to control the on/off of the current of the first electromagnetic coils 52, when the first electromagnetic coils 52 are energized, the first armature 51 can move downward under the attraction of the first electromagnetic coils 52, so that the first contact pieces 3 move to the extended position, further, the first driving assembly 5 further includes four second return springs 54, one ends of the second return springs 54 are connected to the upper end surfaces of the first contact pieces 3, the other end is connected with the button rod 21, and is used for driving the first contact piece 3 to reset to the folded position, when the first electromagnetic coil 52 is powered off, the first contact piece 3 moves from the unfolded position to the folded position under the action of the second reset spring 54, so that the purpose of controlling the movement of the first contact piece 3 is achieved.
In order to realize the current on-off of the first electromagnetic coils 52, the four first electromagnetic coils 52 may be controlled by four coil switches 53 respectively, or the first electromagnetic coils 52 may be connected in series two by two and then connected in parallel with each other, so as to simplify the control steps of the first electromagnetic coils 52, the latter is preferred in the present utility model, specifically, please refer to fig. 4, which is a schematic diagram of an embodiment of the connection between the first electromagnetic coils 52 and the coil switches 53, in this embodiment, the first electromagnetic coils 52 disposed on the first contact plate 3 and the second contact plate 4 in the common set are connected in series with each other and connected in parallel with the first electromagnetic coils 52 disposed on the first contact plate 3 and the second contact plate 4 in the corresponding standby set, so that the control of the current on-off of the four electromagnetic coils can be realized by one coil switch 53, so that the control steps of the first electromagnetic coils 52 are simplified, and the user experience is optimized.
The materials of the first contact piece 3 and the second contact piece 4 should include all conductive materials including gold, silver and copper, and in view of cost and conductivity, in one embodiment of the present utility model, copper sheets are selected as the materials of the first contact piece 3 and the second contact piece 4.
In order to facilitate observation of the internal condition of the redundant contact type push button switch 100, in an embodiment of the present utility model, the material of the housing 1 is a transparent material, so that a user can clearly determine the damage condition of the contacts of the redundant contact type push button switch 100 through the transparent housing 1, thereby facilitating subsequent maintenance and arrangement.
In order to prevent the redundant contact type push button switch 100 from being damaged by the first return spring 22 and not being able to be used further, in an embodiment of the present utility model, the push button rod 21 is configured to be telescopic, so that when the first return spring 22 is damaged, the push button rod 21 is driven, and the contact between the first contact piece 3 and the second contact piece 4 can still be achieved, so as to avoid the damage of the first return spring 22, resulting in a delay of the construction period.
The push button rod 21 may be set in a telescopic manner in various manners, for example, the push button rod 21 may be set in a threaded manner, and the push button rod 21 is lifted by rotating threads, referring to fig. 5, in a first embodiment of the present utility model, the push button rod 21 includes a first rod segment 211 protruding from the housing 1 and a second rod segment 212 hinged to the first contact plate 3, the first rod segment 211 is formed with a movable cavity with a downward opening, the second rod segment 212 is movably disposed in the movable cavity, and has a movement stroke sliding up and down along the movable cavity, the redundant contact type push button switch 100 further includes a second driving component 6 for driving the second rod segment 212, specifically, the second driving component 6 includes a third return spring 61, a second electromagnetic coil 63, and a second armature 62, one end of the third return spring 61 is connected to a top wall of the movable cavity, the other end of the third return spring is connected to the second rod segment 212, the second armature 62 is disposed at a bottom of the second rod segment 212, and has a movement stroke of sliding up and down along the movable cavity, the second contact plate 62 moves the second armature 63, and the second armature 63 is contacted with the second contact plate 4 when the second armature 63 is disposed at the bottom of the movable cavity, and the second armature 62 is contacted with the second contact plate 31, and the second armature 63 is contacted with the second electromagnetic coil 63, and the second armature 63 is contacted with the second contact plate 4, and the second armature is contacted with the second armature segment is contacted with the second coil 63, and the second armature rod 63.
The utility model also provides a positive pressure explosion-proof and fire gas control cabinet, which comprises a redundant contact type button switch, and the specific structure of the redundant contact type button switch refers to the embodiment, and because the positive pressure explosion-proof and fire gas control cabinet adopts all the technical schemes of all the embodiments, the positive pressure explosion-proof and fire gas control cabinet at least has all the beneficial effects brought by the technical schemes of the embodiments, and the redundant contact type button switch is not repeated one by one.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A redundant contact type push button switch, comprising:
a housing formed with an installation cavity;
the button rod assembly comprises a button rod and a first reset spring, the button rod is movably arranged in the mounting cavity, the upper end part of the button rod protrudes out of the shell, the button rod is provided with a movement stroke which moves up and down along the mounting cavity, one end of the first reset spring is connected with the button rod, and the other end of the first reset spring is connected with the shell and is used for resetting the button rod which moves downwards upwards;
one end of the first contact piece is hinged to the bottom end of the button rod along the circumferential direction, a first contact is formed at the other end of the first contact piece, and the first contact piece is provided with a furling position close to the button rod and a unfolding position far away from the button rod;
four second contact pieces, corresponding to the four first contact pieces, each of which is formed with a second contact for contacting with the first contact in the unfolded position; the method comprises the steps of,
the first driving assembly is used for driving the first contact piece to move between a furling position and a unfolding position;
and in the four first contact sheet groups and the four second contact sheet groups, two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a common group, the other two first contact sheets and two second contact sheets which are arranged correspondingly are arranged as a standby group, two second contact sheets in the common group are connected with two second contact sheets in the standby group in parallel, two first contact sheets in the common group are positioned at an unfolding position, and two first contact sheets in the standby group are positioned at a folding position.
2. The redundant touch point type push button switch of claim 1, further comprising four first armatures, four first electromagnetic coils, and a coil switch;
the four first armatures are respectively arranged on the lower end surfaces of the four first contact pieces;
the four first electromagnetic coils are respectively and correspondingly arranged below the four first armatures;
the coil switch is respectively and electrically connected with the first electromagnetic coil and used for controlling the on-off of the current of the first electromagnetic coil;
the first drive assembly includes the first electromagnetic coil, the first armature, and the coil switch.
3. The redundant touch button switch of claim 2, wherein four of said first solenoids are connected in series and in parallel with each other such that four of said first contact pads have the same movement stroke in pairs.
4. The redundant touch type push button switch of claim 1, further comprising four second return springs, wherein one ends of the second return springs are connected with the upper end surface of the first contact piece, and the other ends of the second return springs are connected with the push button rod, so as to drive the first contact piece to return to a folded position;
the first drive assembly includes the second return spring.
5. The redundant touch button switch of claim 1, wherein the housing material is a transparent material.
6. The redundant touch button switch of claim 1, wherein the button bar is telescopically arranged.
7. The redundant touch type push button switch of claim 6, wherein said push button lever comprises a first lever segment protruding from said housing and a second lever segment hinged to said first contact piece, said first lever segment defining a downwardly opening movable cavity, said second lever segment being movably disposed within said movable cavity and having a travel sliding up and down said movable cavity;
the redundant contact type button switch further comprises a second driving component used for driving the second rod section to move.
8. The redundant contact type push button switch of claim 7, further comprising a third return spring, a second solenoid, and a second armature;
one end of the third reset spring is connected with the top wall of the movable cavity, and the other end of the third reset spring is connected with the second rod section;
the second armature is arranged at the bottom of the second rod section;
the second electromagnetic coil is correspondingly arranged below the second armature;
the second drive assembly includes the third return spring, a second electromagnetic coil, and a second armature.
9. The redundant touch button switch of claim 1, wherein the first contact pad and the second contact pad material comprise copper.
10. A positive pressure explosion and fire control cabinet comprising a redundant contact type push button switch as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222556667.2U CN219642707U (en) | 2022-09-27 | 2022-09-27 | Redundant contact type button switch and positive pressure explosion-proof and fire-gas control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222556667.2U CN219642707U (en) | 2022-09-27 | 2022-09-27 | Redundant contact type button switch and positive pressure explosion-proof and fire-gas control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219642707U true CN219642707U (en) | 2023-09-05 |
Family
ID=87811687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222556667.2U Active CN219642707U (en) | 2022-09-27 | 2022-09-27 | Redundant contact type button switch and positive pressure explosion-proof and fire-gas control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219642707U (en) |
-
2022
- 2022-09-27 CN CN202222556667.2U patent/CN219642707U/en active Active
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