CN111524733A - Magnetic type emergency stop button for flameproof shell - Google Patents
Magnetic type emergency stop button for flameproof shell Download PDFInfo
- Publication number
- CN111524733A CN111524733A CN202010349845.7A CN202010349845A CN111524733A CN 111524733 A CN111524733 A CN 111524733A CN 202010349845 A CN202010349845 A CN 202010349845A CN 111524733 A CN111524733 A CN 111524733A
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- China
- Prior art keywords
- magnetic
- stop button
- emergency stop
- channel
- magnetic pole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
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- Push-Button Switches (AREA)
Abstract
The invention discloses a magnetic type emergency stop button used on an explosion-proof shell, which comprises a key sleeve with a sliding channel, a key shaft, a reset spring and a locking device, wherein one end of the key shaft is arranged in the sliding channel and can axially slide along the sliding channel; when the first magnetic part is opposite to the second magnetic part in opposite polarity, the key shaft is pressed down to lock the key shaft; and rotating the key shaft to enable the first magnetic part and the second magnetic part to be opposite in homopolar, and popping and unlocking the key shaft. The magnetic type emergency stop button for the flameproof shell provided by the invention adopts the heteropolar attraction of the permanent magnets for locking, and the rotating magnetic poles enable homopolar repulsion unlocking, so that the magnetic type emergency stop button is simple in structure, convenient to install and maintain, convenient to process and greatly reduced in cost.
Description
Technical Field
The invention relates to the technical field of mining explosion-proof button switches, in particular to a magnetic type emergency stop button used on an explosion-proof shell.
Background
The equipment is operated in a coal mine explosive environment, and in order to operate and control the equipment, an operation button needs to be arranged on an electric cabinet of the equipment, and the button device is required to meet related explosion-proof safety standards.
The existing non-explosion-proof emergency stop button cannot be arranged on an explosion-proof shell, and the common explosion-proof emergency stop button is complex in structure, large in size and inconvenient to install and maintain. The mechanical locking mechanism is adopted, the processing difficulty is high, the current production process can only be processed by manufacturing a die or adopting a 6-axis processing center, the cost is high, and the mechanical locking mechanism cannot be popularized.
In view of this, it is necessary to provide a new flameproof emergency stop button to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a magnetic type emergency stop button for a flameproof shell, which locks by adopting the heteropolar attraction of permanent magnets, rotates magnetic poles to reject and unlock the homopolar, has simple structure, convenient installation and maintenance and convenient processing, and greatly reduces the cost.
In order to solve the problems, the technical scheme of the invention is as follows:
a magnetic type emergency stop button for a flameproof shell comprises a key sleeve with a sliding channel, a key shaft, a reset spring and a locking device, wherein one end of the key shaft is arranged in the sliding channel and can axially slide along the sliding channel;
the first magnetic part comprises at least one group of first magnetic pole groups, and each first magnetic pole group comprises two adjacent magnetic blocks with opposite magnetic poles;
the second magnetic part comprises at least one group of second magnetic pole groups, and each second magnetic pole group comprises two adjacent magnetic blocks with opposite magnetic poles; the magnetic blocks of the first magnetic pole group correspond to the magnetic blocks of the second magnetic pole group one by one, and the magnetic poles of the magnetic blocks at the corresponding positions of the first magnetic pole group and the second magnetic pole group are opposite;
when the first magnetic pole group and the second magnetic pole group are opposite in opposite poles, the key shaft is pressed down to lock the key shaft;
and rotating the key shaft to enable the homopolar poles of the first magnetic pole group and the second magnetic pole group to be opposite, and ejecting the key shaft for unlocking.
Further, the first magnetic part comprises two sets of first magnetic pole groups which are arranged oppositely, and the second magnetic part comprises two sets of second magnetic pole groups which are arranged oppositely.
Further, the central angle of the two magnetic blocks of each of the first magnetic pole group and the second magnetic pole group is 20-30 degrees.
Furthermore, the first magnetic part and the second magnetic part are respectively embedded in the key sleeve and the key shaft.
Further, the sliding channel comprises a first channel and a second channel which are communicated with each other, and the diameter of the first channel is larger than that of the second channel;
correspondingly, the key shaft comprises a first shaft section and a second shaft section which are connected with each other, and a key cap connected with the first shaft section, wherein the diameter of the first shaft section is matched with that of the first channel, and the diameter of the second shaft section is matched with that of the second channel.
Furthermore, the return spring is sleeved on the second shaft section and positioned in the first channel, one end of the return spring is connected with the first shaft section, and the other end of the return spring is connected with the bottom of the first channel.
Further, the second channel comprises a copper sleeve matched with the diameter of the second shaft section, and the second shaft section can slide along the axial direction of the copper sleeve.
Furthermore, the key shaft also comprises a limiting part arranged at the bottom of the key shaft and used for limiting the rebound stroke of the key shaft.
Further, the limiting portion is a limiting clamp spring, and the diameter of the limiting clamp spring is larger than that of the second channel.
Further, the magnetic block is a permanent magnet.
Compared with the prior art, the magnetic type emergency stop button for the flameproof shell has the advantages that:
the magnetic type emergency stop button for the flameproof shell provided by the invention adopts the heteropolar attraction of the permanent magnets for locking, and rotates the magnetic poles to ensure that homopolar repulsion is used for unlocking, so that the magnetic type emergency stop button is simple in structure, convenient to process, convenient to install and maintain and greatly reduced in cost; the volume is small, the explosion-proof shell can be installed as a common button, and the use is convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of one of the using states of the magnetic type emergency stop button for the flameproof housing provided by the invention;
FIG. 2 is a schematic structural diagram of another using state of the magnetic type emergency stop button used on the flameproof housing shown in FIG. 1;
FIG. 3 is a schematic position diagram of a first magnetic attraction part in a magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 1;
FIG. 4 is a schematic position diagram of a second magnetic attraction part in the magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 1;
FIG. 5 is a schematic position diagram of a first magnetic attraction part in a magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 2;
FIG. 6 is a schematic position diagram of a second magnetic attraction part in the magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 2.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features, and advantages of the present invention more comprehensible, specific embodiments of the present invention are described below with reference to the accompanying drawings.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of one of the using states of the magnetic-type emergency stop button for the flameproof housing according to the present invention; FIG. 2 is a schematic structural diagram of another using state of the magnetic type emergency stop button used on the flameproof housing shown in FIG. 1. The magnetic type emergency stop button 100 used on the flameproof shell comprises a key sleeve 1, a key shaft 2, a return spring 3 and a locking device 4.
The key sleeve 1 comprises a body 11 and a sliding channel 12 penetrating through the top surface and the bottom surface of the body 11, and one end of the key shaft 2 is arranged in the sliding channel 12 and can slide along the axial direction of the sliding channel 12.
In the present embodiment, the cross section of the slide passage 12 is circular, and correspondingly, the cross section of the portion of the key shaft 2 provided in the slide passage 12 is also circular. The sliding channel 12 includes a first channel 121 and a second channel 122 that are interconnected, wherein the first channel 121 has a diameter larger than the second channel 122.
Preferably, the second passage 122 further comprises a copper sleeve 1221, so that the magnetic-type emergency stop button 100 for the flameproof housing of the invention meets the explosion-proof requirement of GB 3836.1-2010.
The key shaft 2 includes a first shaft section 21 and a second shaft section 22 connected to each other, and a key cap 23 connected to the first shaft section 21. The first shaft section 21 and the second shaft section 22 are both circular in cross-sectional shape corresponding to the shape of the slide channel 1, and the diameter of the second shaft section 22 is smaller than the diameter of the first shaft section 21. By making the size of the key cap 23 larger than the diameter of the first shaft section 21, the pressing at the time of operation is facilitated.
The diameter of the first shaft section 21 is matched with the diameter of the first channel 121, and the diameter of the second shaft section 22 is matched with the diameter of the second channel 122, so that the problems of deviation and the like do not occur when the key shaft 2 slides along the axial direction of the sliding channel 1. Where the second passage 122 includes an internal copper sleeve, the diameter of the second shaft section 22 matches the internal diameter of the copper sleeve 123.
The reset spring 3 is sleeved outside the key shaft 2 and used for resetting the key shaft 2, specifically, the reset spring 3 is sleeved outside the second shaft section 22, one end of the reset spring is connected with the first shaft section 21, the other end of the reset spring is connected with the bottom of the first channel 121, and the reset spring 3 is arranged in the first channel 121. When the key shaft 2 is in the locked state, the first shaft section 21 is completely positioned in the first channel 121, and the return spring 3 is compressed; when the key shaft 2 is in the spring-open unlocking state, the first shaft section 21 is partially located outside the first channel 121, and the return spring 3 is stretched.
The locking device 4 is a magnetic attraction type locking device, and includes a first magnetic attraction part 41 arranged at the top of the key sleeve 1 and a second magnetic attraction part 42 arranged on the key shaft 2, and the first magnetic attraction part 41 corresponds to the second magnetic attraction part 42.
The first magnetic part 41 includes at least one first magnetic pole group 411, and each first magnetic pole group 411 includes two magnetic blocks with opposite magnetic poles and disposed adjacently. Preferably, the magnetic blocks of the first magnetic pole group 411 are embedded in the body 11 of the key sleeve 1, and the end surfaces of the magnetic blocks are flush with the top surface of the body 11.
The second magnetic attraction portion 42 includes at least one second magnetic pole group 421, and each second magnetic pole group 421 includes two magnetic blocks arranged adjacently and having opposite magnetic poles. Preferably, the magnetic blocks of the second magnetic pole group 421 are embedded in the bottom of the key cap 23, and the magnetic blocks are flush with the bottom surface of the key cap 23.
The magnetic blocks of the first magnetic pole group 411 correspond to the magnetic blocks of the second magnetic pole group 421 one by one, and the magnetic poles of the magnetic blocks at the corresponding positions of the first magnetic pole group 411 and the second magnetic pole group 421 are opposite.
In the present invention, the first magnetic pole group 41 and the second magnetic pole group 42 may be one group, or two, three, or four groups, and when the number is two or more, the bonding surface of the key shaft 2 and the key sleeve 1 is closer when the key shaft is in the locked state.
The following is a detailed description of the structure of the two first magnetic pole groups 411 and the two second magnetic pole groups 421.
Referring to fig. 3 to fig. 6, fig. 3 is a schematic position diagram of a first magnetic attraction portion in a magnetic attraction type emergency stop button for the flameproof enclosure shown in fig. 1; FIG. 4 is a schematic position diagram of a second magnetic attraction part in the magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 1; FIG. 5 is a schematic position diagram of a first magnetic attraction part in a magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 2; FIG. 6 is a schematic position diagram of a second magnetic attraction part in the magnetic attraction type emergency stop button used on the flameproof enclosure shown in FIG. 2. The two first magnetic pole groups 411 are arranged oppositely, and the two second magnetic pole groups 421 are arranged oppositely. For convenience of description, the four magnetic blocks of the first magnetic pole group 411 are respectively denoted as a magnetic block a412, a magnetic block b 413, a magnetic block c414, and a magnetic block d 415; correspondingly, the four magnetic blocks of the second magnetic pole group 421 are respectively denoted as magnetic block a422, magnetic block B423, magnetic block C424, and magnetic block D425.
The magnetic pole of the magnetic block a412 is an N pole, the magnetic pole of the magnetic block b 413 is an S pole, the magnetic pole of the magnetic block c414 is an N pole, and the magnetic pole of the magnetic block d415 is an S pole;
the magnetic pole of magnetic block A422 is S pole, the magnetic pole of magnetic block B423 is N pole, the magnetic pole of magnetic block C424 is S pole, and the magnetic pole of magnetic block D425 is N pole.
When the key shaft 2 is in the locked state, magnetic block a412 is arranged opposite to magnetic block A422, magnetic block B413 is arranged opposite to magnetic block B423, magnetic block C414 is arranged opposite to magnetic block C424, and magnetic block D415 is arranged opposite to magnetic block D425. The first magnetic pole group 41 and the second magnetic pole group 42 have opposite poles, and the key shaft 2 can be locked by pressing the key shaft due to the attraction of the opposite poles of the magnetic poles, as shown in fig. 2.
The key shaft 2 is rotated to enable the magnetic block B423 and the magnetic block a412 to be arranged oppositely, the magnetic block D425 and the magnetic block c414 to be arranged oppositely, the same poles of the first magnetic pole group 41 and the second magnetic pole group 42 are opposite, the key shaft 2 bounces off under the action of repulsion of the same poles, and the reset spring 3 rebounds the key shaft 2 to the initial position, as shown in FIG. 1.
In the process of springing the key shaft 2 open, in order to avoid the key shaft 2 from being separated from the sliding track of the sliding channel 12 under the action of a large magnetic force, preferably, a limiting part 5 for limiting the springback stroke of the key shaft is arranged at the bottom of the second shaft section 22, and preferably, the limiting part 5 is a limiting snap spring. The limiting clamp spring is clamped on the second shaft section, and the diameter of the limiting clamp spring is larger than that of the second channel 122.
In this embodiment, the key shaft 2 rotates clockwise and rotates 25 °. In practical application, the positions of two adjacent magnetic blocks in the first magnetic pole group and the second magnetic pole group can be set according to practical conditions, so that the central angle of the two adjacent magnetic blocks can be 20-30 degrees, namely the rotation angle of the key shaft is 20-30 degrees, and the interval between the two magnetic blocks can be adjusted to be larger, such as 30-60 degrees. In operation, in addition to clockwise rotation, a counterclockwise rotation may also be used.
In the invention, the magnetic block is a permanent magnet, and the shape of the magnetic block is circular.
The magnetic type emergency stop button for the flameproof shell provided by the invention has the following working principle:
rotating the key shaft 2 to enable the first magnetic pole group 411 and the second magnetic pole group 421 to have opposite poles, namely, the magnetic block a412 is arranged opposite to the magnetic block A422, the magnetic block B413 is arranged opposite to the magnetic block B423, the magnetic block C414 is arranged opposite to the magnetic block C424, the magnetic block D415 is arranged opposite to the magnetic block D425, pressing the key shaft 2, and locking the key shaft 2 under the action of opposite pole attraction;
when the key shaft 2 is rotated to make the first magnetic pole group 411 and the second magnetic pole group 421 opposite to each other in the same polarity, that is, the magnetic block B423 and the magnetic block a412 are opposite to each other, and the magnetic block D425 and the magnetic block c414 are opposite to each other, the key shaft 2 is bounced to unlock under the action of repulsion of the same poles.
The magnetic type emergency stop button for the flameproof shell provided by the invention adopts the heteropolar attraction of the permanent magnets for locking, and rotates the magnetic poles to ensure that homopolar repulsion is used for unlocking, so that the magnetic type emergency stop button is simple in structure, convenient to process, convenient to install and maintain and greatly reduced in cost; the volume is small, the explosion-proof shell can be installed as a common button, and the use is convenient.
It should be noted that the magnetic-type emergency stop button provided by the invention can be used in other technical fields besides the explosion-proof shell.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A magnetic type emergency stop button used on a flameproof shell is characterized by comprising a key sleeve with a sliding channel, a key shaft, a reset spring and a locking device, wherein one end of the key shaft is arranged in the sliding channel and can slide along the axial direction of the sliding channel;
the first magnetic part comprises at least one group of first magnetic pole groups, and each first magnetic pole group comprises two adjacent magnetic blocks with opposite magnetic poles;
the second magnetic part comprises at least one group of second magnetic pole groups, and each second magnetic pole group comprises two adjacent magnetic blocks with opposite magnetic poles; the magnetic blocks of the first magnetic pole group correspond to the magnetic blocks of the second magnetic pole group one by one, and the magnetic poles of the magnetic blocks at the corresponding positions of the first magnetic pole group and the second magnetic pole group are opposite;
when the first magnetic pole group and the second magnetic pole group are opposite in opposite poles, the key shaft is pressed down to lock the key shaft;
and rotating the key shaft to enable the homopolar poles of the first magnetic pole group and the second magnetic pole group to be opposite, and ejecting the key shaft for unlocking.
2. The magnetic attraction type emergency stop button for the flameproof housing according to claim 1, wherein the first magnetic attraction part comprises two sets of first magnetic pole groups which are oppositely arranged, and the second magnetic attraction part comprises two sets of second magnetic pole groups which are oppositely arranged.
3. The magnetic-type emergency stop button for the flameproof enclosure according to claim 1, wherein the central angle of the two magnetic blocks of each of the first magnetic pole group and the second magnetic pole group is 20-30 °.
4. The magnetic attraction type emergency stop button for the flameproof housing according to claim 1, wherein the first magnetic attraction part and the second magnetic attraction part are respectively embedded in the key sleeve and the key shaft.
5. The magnetic-type emergency stop button for the flameproof enclosure according to claim 1, wherein the sliding channel comprises a first channel and a second channel which are communicated with each other, and the diameter of the first channel is larger than that of the second channel;
correspondingly, the key shaft comprises a first shaft section and a second shaft section which are connected with each other, and a key cap connected with the first shaft section, wherein the diameter of the first shaft section is matched with that of the first channel, and the diameter of the second shaft section is matched with that of the second channel.
6. The magnetic type emergency stop button for the flameproof enclosure according to claim 5, wherein the return spring is sleeved on the second shaft section and positioned in the first channel, one end of the return spring is connected with the first shaft section, and the other end of the return spring is connected with the bottom of the first channel.
7. The magnetic type emergency stop button for the flameproof enclosure according to claim 5, wherein the second channel comprises a copper sleeve matched with the diameter of the second shaft section, and the second shaft section can slide along the axial direction of the copper sleeve.
8. The magnetic type emergency stop button for the flameproof housing according to claim 5, wherein the key shaft further comprises a limiting part arranged at the bottom of the key shaft and used for limiting the rebound stroke of the key shaft.
9. The magnetic type emergency stop button for the flameproof housing according to claim 8, wherein the limiting part is a limiting clamp spring, and the diameter of the limiting clamp spring is larger than that of the second channel.
10. The magnetic-type emergency stop button for the flameproof enclosure according to any of claims 1 to 9, wherein the magnetic block is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349845.7A CN111524733B (en) | 2020-04-28 | 2020-04-28 | Magnetic type emergency stop button for flameproof shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010349845.7A CN111524733B (en) | 2020-04-28 | 2020-04-28 | Magnetic type emergency stop button for flameproof shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111524733A true CN111524733A (en) | 2020-08-11 |
| CN111524733B CN111524733B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010349845.7A Active CN111524733B (en) | 2020-04-28 | 2020-04-28 | Magnetic type emergency stop button for flameproof shell |
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| CN (1) | CN111524733B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911230A (en) * | 2007-12-27 | 2010-12-08 | 泰科电子公司 | Magnetically latched miniature switch |
| CN201829368U (en) * | 2010-10-28 | 2011-05-11 | 沈阳广角成套电器股份有限公司 | Explosion-proof scram button for mine |
| CN102779668A (en) * | 2011-05-13 | 2012-11-14 | 大银微***股份有限公司 | Magnetic induction lock control loop of press key box |
| US20180181161A1 (en) * | 2016-12-08 | 2018-06-28 | Kitty Hawk Corporation | Magnetic spring inceptor |
| CN208767194U (en) * | 2018-09-25 | 2019-04-19 | 天津通联电气有限公司 | A kind of mining emergency stop switch |
| CN109901662A (en) * | 2019-03-26 | 2019-06-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Magnetic knob and household electrical appliance |
| CN210110603U (en) * | 2019-01-23 | 2020-02-21 | 天津富创科技有限公司 | Remote controller mechanical key for air conditioner |
-
2020
- 2020-04-28 CN CN202010349845.7A patent/CN111524733B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911230A (en) * | 2007-12-27 | 2010-12-08 | 泰科电子公司 | Magnetically latched miniature switch |
| CN201829368U (en) * | 2010-10-28 | 2011-05-11 | 沈阳广角成套电器股份有限公司 | Explosion-proof scram button for mine |
| CN102779668A (en) * | 2011-05-13 | 2012-11-14 | 大银微***股份有限公司 | Magnetic induction lock control loop of press key box |
| US20180181161A1 (en) * | 2016-12-08 | 2018-06-28 | Kitty Hawk Corporation | Magnetic spring inceptor |
| CN208767194U (en) * | 2018-09-25 | 2019-04-19 | 天津通联电气有限公司 | A kind of mining emergency stop switch |
| CN210110603U (en) * | 2019-01-23 | 2020-02-21 | 天津富创科技有限公司 | Remote controller mechanical key for air conditioner |
| CN109901662A (en) * | 2019-03-26 | 2019-06-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Magnetic knob and household electrical appliance |
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| Publication number | Publication date |
|---|---|
| CN111524733B (en) | 2022-07-01 |
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