CN113035618B - Safety switch capable of realizing power-on or power-off by pressing twice and operation method thereof - Google Patents
Safety switch capable of realizing power-on or power-off by pressing twice and operation method thereof Download PDFInfo
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- CN113035618B CN113035618B CN202110282206.8A CN202110282206A CN113035618B CN 113035618 B CN113035618 B CN 113035618B CN 202110282206 A CN202110282206 A CN 202110282206A CN 113035618 B CN113035618 B CN 113035618B
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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
- H01H13/04—Cases; Covers
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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
- H01H13/10—Bases; Stationary contacts mounted thereon
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
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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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
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Abstract
The invention relates to a safety switch capable of realizing power-on or power-off by pressing twice and an operation method thereof. A safety switch for realizing power-on or power-off by pressing twice comprises: the base is matched with the upper cover; the base is provided with an accommodating cavity, and the switch mechanism part is accommodated in the accommodating cavity; the switch mechanism includes: the action assembly is in driving connection with the driving assembly through the transmission assembly, so that the action assembly extends out of the accommodating cavity or retracts towards the accommodating cavity. The safety switch capable of realizing power-on or power-off by pressing twice and the operation method thereof effectively avoid mistaken power-on or power-off caused by mistaken touch; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; and meanwhile, the production efficiency of enterprises and the yield of products are improved.
Description
Technical Field
The invention relates to the technical field of safety switches, in particular to a safety switch capable of realizing power-on or power-off by pressing twice and an operation method thereof.
Background
In the technical field of industrial production, the situation that workers are accidentally injured by production and processing equipment often occurs. However, the production processing equipment causes the worker to be accidentally injured mainly due to two aspects, namely improper operation of the worker on one hand and misoperation of the production processing equipment on the other hand. False activation of production process equipment is often caused by inadvertent contact of its on-off switch. That is, when the production and processing equipment is supposed to be in a power-off and shutdown state (at this time, a worker usually overhauls and maintains the production and processing equipment), the on-off switch is touched by other workers or objects by mistake, so that the on-off switch is pressed down to be suddenly started to operate, and further, the worker who overhauls and maintains the production and processing equipment is injured.
Moreover, if the production and processing equipment is accidentally touched during operation and is powered off and stopped, defective products are easily produced on one hand, and on the other hand, the production and processing equipment is powered on again after being powered off, parameter configuration may need to be readjusted, and the like, so that the production efficiency is seriously affected. In addition, sudden power failure of the production and processing equipment can cause safety problems and accidents.
Therefore, the invention aims to design a safety switch to avoid the power-on starting of equipment due to false touch and the power-off stopping of production and processing equipment due to false touch. Therefore, the safety and the reliability of the equipment are improved, the production efficiency is further improved, safety accidents are effectively prevented, and the personal safety of workers is guaranteed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the safety switch capable of realizing power-on or power-off by pressing twice and the operation method thereof, so that the mistaken power-on or power-off caused by mistaken touch is effectively avoided; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; and meanwhile, the production efficiency of enterprises and the yield of products are improved.
The purpose of the invention is realized by the following technical scheme:
a safety switch that is energized or de-energized by two presses, comprising: the base is matched with the upper cover; the base is provided with an accommodating cavity, and the switch mechanism part is accommodated in the accommodating cavity;
the switch mechanism includes: the action assembly is in driving connection with the driving assembly through the transmission assembly, so that the action assembly extends out of the accommodating cavity or retracts towards the accommodating cavity.
In one embodiment, the transmission assembly comprises a square rotating block and a driving drum, the square rotating block is rotatably arranged in the accommodating cavity, and the driving drum is connected with the square rotating block;
the drive assembly includes: the pressing device comprises a driving block, a pressing rod and a first return spring, wherein the driving block is connected with the pressing rod, and the first return spring is sleeved on the pressing rod; the base is further provided with a driving channel communicated with the accommodating cavity, and the driving block slides back and forth along the driving channel to drive the square rotating block to rotate;
the action assembly comprises: the connecting roller is rotatably connected with one end of the rod-type contact, and the second reset spring is sleeved on the rod-type contact; the driving rotary drum is provided with a step bottom surface, and the step bottom surface is pressed and held on the connecting roller; the other end of the rod-type contact extends out of the accommodating cavity; the ladder bottom surface is provided with a first electrified walking surface, a second electrified walking surface, a first power-off walking surface and a second power-off walking surface which are sequentially connected end to end;
the top surface of the square rotating block is provided with four arc-shaped positioning grooves which are distributed in an annular array by taking the central axis of the square rotating block as the center; the switch mechanism further comprises a fine adjustment assembly, and the fine adjustment assembly comprises a position adjusting piece and a third return spring; the position adjusting piece is connected with the upper cover through the third return spring, so that the position adjusting piece has the trend of being pressed on the arc-shaped position adjusting groove.
In one embodiment, the positioning member has an arc-shaped pressing head, and the arc-shaped pressing head is matched with the arc-shaped positioning groove.
In one embodiment, the driving assembly further comprises a driving roller, the driving roller is rotatably arranged on the driving block, and the driving roller is abutted against or separated from the side wall of the square rotating block.
In one embodiment, one end of the rod-type contact is provided with a U-shaped frame, and the connecting roller is rotatably arranged on the U-shaped frame.
In one embodiment, the base and the upper cover are also matched to form a protection channel, and the protection channel is communicated with the driving channel; the pressing rod and the first return spring are arranged along the protection channel in a sliding mode.
In one embodiment, the top surface of the square rotating block is provided with a reset rod, and the reset rod is rotatably connected with the upper cover.
The invention also discloses a power-on or power-off operation method of the safety switch, which adopts the safety switch which realizes power-on or power-off by pressing twice to realize power-on or power-off;
the pressing rod is pressed for the first time, the connecting roller travels on the electrified first traveling surface, and the power-off state is kept;
pressing the pressing rod for the second time, and enabling the connecting roller to travel on the electrified second traveling surface and finally realize electrification;
pressing the pressing rod for the third time, wherein the connecting roller walks on the first power-off walking surface and keeps a power-on state;
pressing the pressing rod for the fourth time, and enabling the connecting roller to walk on the power-off second walking surface to finally realize power-off;
pressing the pressing rod four times is an on-off electrical cycle.
The safety switch capable of realizing power-on or power-off by pressing twice and the operation method thereof effectively avoid mistaken power-on or power-off caused by mistaken touch; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; and meanwhile, the production efficiency of enterprises and the yield of products are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a safety switch of the present invention that is powered on or off by two pressing operations;
FIG. 2 is a schematic structural view of the safety switch shown in FIG. 1 with the upper cover removed;
FIG. 3 is an exploded view of the switch mechanism shown in FIG. 2;
FIG. 4 is a cross-sectional view of the safety switch shown in FIG. 2;
FIG. 5 is a schematic view of the drive drum of FIG. 3 in an extended condition;
FIG. 6 is a schematic diagram illustrating a change in state of the safety switch of FIG. 2 during a single depression;
fig. 7 is a schematic diagram illustrating the state change of the safety switch shown in fig. 2 during one power-on and power-off cycle.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the prior art, the on-off switch control of the production and processing equipment is generally designed to be powered on or powered off by single pressing. However, the prior art on-off switch is often mispowered or mispowered due to accidental mishandling by a worker or by the worker taking an object and mishandling the object.
The problem of mistaken power-on or power-off of production and processing equipment due to mistaken touch influences the production efficiency and the production quality of enterprises on one hand; more serious, the safety accident of the production is easily caused, and the personal safety of the related working personnel is seriously threatened.
To this end, the present invention discloses a safety switch 10 (as shown in fig. 1) that is powered on or off by two presses, and requires two consecutive presses to achieve the power on or off operation. Compared with the existing design of realizing power-on or power-off by single pressing, the design effectively avoids mistaken power-on or power-off caused by mistaken touch; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; and meanwhile, the production efficiency of enterprises and the yield of products are improved.
As shown in fig. 1 and 2, the safety switch 10 for realizing power on or power off by pressing twice disclosed in the present invention includes: a base 20, an upper cover 30 and an opening and closing mechanism 40, wherein the base 20 is matched with the upper cover 30. The base 20 defines a receiving cavity 50, and the switch mechanism 40 is partially received in the receiving cavity 50.
As shown in fig. 2 and 3, specifically, the switching mechanism 40 includes: the actuating assembly 300 is in driving connection with the driving assembly 100 through the transmission assembly 200, so that the actuating assembly 300 extends out of the accommodating cavity 50 or retracts into the accommodating cavity 50.
As shown in fig. 2 and 3, in detail, the transmission assembly 200 includes a square rotary block 210 and a driving drum 220, the square rotary block 210 is rotatably disposed in the accommodating cavity 50, and the driving drum 220 is connected to the square rotary block 210.
As shown in fig. 3 and 4, specifically, the driving assembly 100 includes: the driving mechanism comprises a driving block 110, a pressing rod 120 and a first return spring 130, wherein the driving block 110 is connected with the pressing rod 120, and the first return spring 130 is sleeved on the pressing rod 120. The base 20 further defines a driving channel 201 (as shown in fig. 6) communicating with the receiving cavity 50 (as shown in fig. 2), and the driving block 110 slides back and forth along the driving channel 201 to drive the square rotating block 210 to rotate.
As shown in fig. 3 and 5, the action assembly 300 specifically includes: the connecting roller 310, the lever contact 320 and the second return spring 330, wherein the connecting roller 310 is rotatably connected to one end of the lever contact 320, and the second return spring 330 is sleeved on the lever contact 320. The driving drum 220 has a stepped bottom 230, and the stepped bottom 230 is pressed against the connecting roller 310; the other end of the lever contact 320 extends from the receiving cavity 50 (shown in fig. 7). The step bottom surface 230 has an energized first running surface 231, an energized second running surface 232, an deenergized first running surface 233, and an deenergized second running surface 234, which are sequentially connected end to end.
As shown in fig. 4, specifically, the top surface of the square rotating block 210 is provided with four arc positioning grooves 211, and the four arc positioning grooves 211 are distributed in an annular array around the central axis of the square rotating block 210. As shown in fig. 3, the switch mechanism 40 further includes a fine adjustment assembly 400, and the fine adjustment assembly 400 includes a positioning member 410 and a third return spring 420. The position adjusting member 410 is connected to the upper cover 30 (shown in fig. 1) by a third return spring 420, so that the position adjusting member 410 tends to be pressed against the arc-shaped position adjusting groove 211.
As shown in fig. 3, in particular, the positioning member 410 has an arc-shaped pressing head 411, and the arc-shaped pressing head 411 is matched with the arc-shaped positioning groove 211.
As shown in fig. 4, in detail, the driving assembly 100 further includes a driving roller 140, the driving roller 140 is rotatably disposed on the driving block 110, and the driving roller 140 abuts against or separates from a side wall of the square rotating block 210.
Specifically, as shown in fig. 3, a U-shaped frame 340 is disposed at one end of the lever contact 320, and the connection roller 310 is rotatably disposed on the U-shaped frame 340.
As shown in fig. 1 and fig. 6, in particular, the base 20 and the upper cover 30 further cooperate to form a protection channel 60, and the protection channel 60 is communicated with the driving channel 201; the pressing rod 120 and the first return spring 130 are slidably disposed along the shielding passage 60. The protection channel 60 is used for forming wrapping protection on the pressing rod 120 and the first return spring 130, and due to the design, the pressing rod 120 can be effectively pressed only by aligning the pressing rod 120 to apply force, so that the situation that the pressing rod 120 is touched by mistake is effectively avoided; in addition, the protection channel 60 also guides the pressing rod 120 and the first return spring 130, so that when the pressing rod 120 is pressed or the pressing rod 120 automatically returns, the pressing rod 120 and the first return spring 130 stably linearly move along the protection channel 60, thereby ensuring stable pressing and returning.
As shown in fig. 4, in particular, the top surface of the square rotating block 210 is provided with a reset rod 212, and the reset rod 212 is rotatably connected with the upper cover 30 (shown in fig. 1). In the event of accidental touch of the pressing lever 120, it is necessary to correct the operation of the switch mechanism 40 caused by accidental touch so as to prevent the occurrence of accidental energization or interruption when the pressing lever 120 is accidentally touched again. The design of the reset rod 212 is to correct the erroneous touch, when the pressing rod 120 is erroneously touched, the reset rod 212 is rotated to reset the square rotating block 210 in a reverse direction (the "reverse direction" here refers to the rotating direction of the square rotating block 210 when the pressing rod 120 is pressed being the "forward direction"), so as to drive the driving drum 220 to rotate in the reverse direction and reset; that is, the square rotary block 210 and the driving drum 220 are reset to the state before being touched by mistake, thereby ensuring that the safety switch is maintained in the safety state in which the power-on or power-off is realized only by pressing the pressing lever 120 twice.
The working principle of the safety switch 10 that is powered on or off by two presses is explained below:
it should be noted that the safety switch 10 provided by the present invention is applied to a production processing device, and the safety switch 10 is used in cooperation with a press type conductive switch when being applied to the production processing device; that is, the safety switch 10 is used to press or not press the press type conductive switch to turn on or off the press type conductive switch, so as to turn on or off the production processing equipment;
it should be noted that the following process is described by taking an off state as an initial state and taking a cycle of on and off as an example;
referring to fig. 6, when the production processing equipment needs to be powered on, the pressing rod 120 is pressed for the first time, and the pressing rod 120 drives the driving block 110 to slide in the direction penetrating into the driving channel 201; in the process, the driving roller 140 abuts against one side wall of the square rotating block 210 and pushes the square rotating block 210 to rotate clockwise by an angle (close to 90 °) until the side of the square rotating block 210 abutting against the driving roller 140 rotates to be parallel to the driving channel 201; it should be noted that, in the rotating process of the square rotating block 210, one of the arc positioning grooves 211 gradually approaches to the positioning member 410 until the arc positioning groove 211 and the positioning member 410 are partially overlapped; it should be emphasized that, at this time, the arc pressing head 411 is not completely aligned with the arc positioning groove 211, the arc pressing head 411 is pressed and held in the arc positioning groove 211 under the elastic restoring force of the third restoring spring 420, and applies force to the square rotation block 210 through the arc positioning groove 211;
referring to fig. 6, when the side of the square rotation block 210 abutted against the driving roller 140 rotates to be parallel to the driving channel 201, the pressing rod 120 is released, and the pressing rod 120 is reset in the direction protruding from the driving channel 201 under the elastic restoring force of the first restoring spring 130; when the pressing lever 120 is completely reset, the driving roller 140 of the pressing lever 120 is separated from the square rotation block 210; at this time, the square rotary block 210 continues to rotate by an angle (by 90 ° in total with the previous rotation) under the indirect action of the elastic restoring force of the third restoring spring 420, so that the arc-shaped holding head 411 is completely aligned with the arc-shaped positioning recess 211; when the arc-shaped holding head 411 is completely aligned with the arc-shaped positioning groove 211, the square rotating block 210 just rotates 90 degrees; at this time, the square rotary block 210 protrudes slightly from the accommodating cavity 50 to the driving channel 201, and such design is that when the pressing rod 120 is pressed next time, the driving block 110 can be abutted against the square rotary block 210 again and push the square rotary block 210 to rotate again;
referring to fig. 5 and 7, it should be particularly described that, in the process of pressing the pressing rod 120 for the first time, the square rotating block 210 drives the driving drum 220 to rotate; since the bottom surface 230 is kept pressed against the connecting roller 310, during the process, the connecting roller 310 moves on the first moving surface 231 and the rod contact 320 gradually extends out of the receiving cavity 50 (i.e., approaches the conductive switch); however, in this process, the production processing equipment is still in a power-off state, that is, even if the safety switch 10 is touched by mistake in the initial power-off state, the production processing equipment cannot be powered on to operate; therefore, the false touch prevention effect is achieved, and safety accidents caused by false power-on operation of production and processing equipment due to false touch are avoided;
it should be particularly noted that, the driving assembly 100 cooperates with the square rotating block 210, so that the driving assembly 100 can only drive the square rotating block 210 to rotate in one direction (clockwise); that is, when the pressing lever 120 is pulled in a direction away from the driving passage 201, the square rotation block 210 does not rotate in the counterclockwise direction; thus, the misoperation that the pressing rod 120 is pulled towards the direction far away from the driving channel 201 to reset the safety switch 10 because a worker is not familiar with the operation mode of the safety switch 10 is avoided, and the reliability of the safety switch 10 is improved;
referring to fig. 5, 6 and 7, the pressing rod 120 is pressed for the second time, and the pressing rod 120 drives the driving block 110 to slide in the direction penetrating into the driving channel 201; it should be noted that the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the second time is the same as the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the first time, and is not described again here; pressing the pressing rod 120 for the second time rotates the square rotating block 210 clockwise by 90 degrees again; in the process, the square rotating block 210 drives the driving drum 220 to rotate again, so that the connection roller 310 runs on the electrified second running surface 232 and the rod-type contact 320 further extends out of the accommodating cavity 50; thereby finally switching on the push type conductive switch to switch the production processing equipment to a power-on state;
referring to fig. 5, 6 and 7, when the power of the production processing equipment needs to be cut off, the pressing rod 120 is pressed for the third time, and the driving block 110 is driven by the pressing rod 120 to slide in the direction penetrating into the driving channel 201; it should be noted that the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the third time is the same as the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the first time, and is not described again here; pressing the pressing rod 120 for the third time rotates the square rotating block 210 clockwise by 90 degrees again; in the process, the square rotating block 210 drives the driving drum 220 to rotate again, so that the connection roller 310 walks on the power-off first walking surface 233; in the process, the rod-type contact 320 is kept in a static state, and the pressing type conductive switch is also kept in a connected state, namely, the production processing equipment is still kept in a power-on state; that is, even if the safety switch 10 is touched by mistake in the power-on state, the power of the production processing equipment cannot be cut off; therefore, the function of preventing false touch is achieved, and the production and safety accidents caused by the false power failure of production and processing equipment due to the false touch are avoided;
referring to fig. 5, 6 and 7, the pressing rod 120 is pressed for the fourth time, and the pressing rod 120 drives the driving block 110 to slide in the direction penetrating into the driving channel 201; it should be noted that the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the fourth time is the same as the principle of the driving assembly 100 and the square rotating block 210 matching when the pressing rod 120 is pressed for the first time, and is not described again here; pressing the pressing rod 120 for the fourth time makes the square rotating block 210 rotate clockwise by 90 degrees again; in the process, the square rotating block 210 drives the driving drum 220 to rotate again, so that the connecting roller 310 runs on the power-off second running surface 234 and the rod-type contact 320 retracts towards the accommodating cavity 50, and finally the pressing type conductive switch is disconnected, and the production processing equipment is switched to a power-off state; meanwhile, the safety switch 10 is also reset to the initial power-off state and waits for the next power-on and power-off cycle;
in short, the safety switch 10 provided by the invention needs to be continuously pressed twice to realize the state switching between the power-on state and the power-off state; the mistaken power-on or power-off caused by the mistaken touch is effectively avoided; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; meanwhile, the production efficiency of enterprises and the yield of products are improved;
in addition, it should be particularly noted that the arc-shaped positioning groove 211, the positioning member 410 and the third return spring 420 cooperate to ensure that the square rotating block 210 can be driven to rotate when the pressing rod 120 is pressed each time, and the normal return of the pressing rod 120 is ensured; namely, it is ensured that the pressing rod 120 can be continuously pressed while ensuring that the square rotating block 210 is accurately rotated by 90 ° by pressing the pressing rod 120 each time, so that the connection roller 310 sequentially traverses the energized first running surface 231, the energized second running surface 232, the de-energized first running surface 233 and the de-energized second running surface 234, thereby realizing the state switching of energization and de-energization by pressing twice and avoiding the problem of erroneous contact;
in addition, it should be further described that the driving roller 140 abuts against the side wall of the square rotating block 210, so that the driving block 110 drives the square rotating block 210 more smoothly, and the system stability is better;
in addition, it should be further described that the connecting roller 310 abuts against the bottom surface 230 of the step, so that the connecting roller 310 can more smoothly run on the bottom surface 230 of the step, and further each time the pressing rod 120 is pressed, the stability of the system can be further improved.
The invention also discloses a power-on or power-off operation method of the safety switch 10, which adopts the safety switch 10 which realizes power-on or power-off by pressing twice to realize power-on or power-off; the specific operation method comprises the following steps:
the pressing rod 120 is pressed for the first time, the connection roller 310 walks on the electrified first walking surface 231, and the power-off state is kept;
pressing the pressing rod 120 for the second time, and connecting the roller 310 to travel on the electrified second traveling surface 232, so as to finally realize electrification;
pressing the pressing lever 120 for the third time, the connection roller 310 travels on the first travel surface 233 which is powered off, and maintains the power-on state;
the pressing rod 120 is pressed for the fourth time, the connecting roller 310 runs on the second running surface 234, and finally the power is cut off;
pressing the pressing lever 120 four times results in one on-off cycle.
Compared with the existing design of realizing power-on or power-off by single pressing, the power-on or power-off operation method provided by the invention effectively avoids mistaken power-on or power-off caused by mistaken touch; the system provides effective personal safety guarantee for production operators, and prevents safety accidents; and meanwhile, the production efficiency of enterprises and the yield of products are improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. A safety switch that is powered on and off by two presses, comprising: the base is matched with the upper cover; the base is provided with an accommodating cavity, and the switch mechanism part is accommodated in the accommodating cavity;
the switch mechanism includes: the action assembly is in driving connection with the driving assembly through the transmission assembly so that the action assembly extends out of the containing cavity or retracts towards the containing cavity;
the transmission assembly comprises a square rotating block and a driving rotary drum, the square rotating block is rotatably arranged in the accommodating cavity, and the driving rotary drum is connected with the square rotating block;
the drive assembly includes: the pressing device comprises a driving block, a pressing rod and a first return spring, wherein the driving block is connected with the pressing rod, and the first return spring is sleeved on the pressing rod; the base is further provided with a driving channel communicated with the accommodating cavity, and the driving block slides back and forth along the driving channel to drive the square rotating block to rotate;
the action assembly comprises: the connecting roller is rotatably connected with one end of the rod-type contact, and the second return spring is sleeved on the rod-type contact; the driving rotary drum is provided with a step bottom surface, and the step bottom surface is pressed and held on the connecting roller; the other end of the rod-type contact extends out of the accommodating cavity; the ladder bottom surface is provided with a first electrified walking surface, a second electrified walking surface, a first power-off walking surface and a second power-off walking surface which are sequentially connected end to end;
the top surface of the square rotating block is provided with four arc-shaped positioning grooves which are distributed in an annular array by taking the central shaft of the square rotating block as the center; the switch mechanism further comprises a fine adjustment assembly, and the fine adjustment assembly comprises a position adjusting piece and a third return spring; the position adjusting piece is connected with the upper cover through the third return spring, so that the position adjusting piece has the tendency of being pressed on the arc-shaped position adjusting groove;
the positioning piece is provided with an arc pressing head which is matched with the arc positioning groove;
the driving assembly further comprises a driving roller, the driving roller is rotatably arranged on the driving block, and the driving roller is abutted against or separated from the side wall of the square rotating block.
2. The safety switch according to claim 1, wherein the lever-type contact is provided with a U-shaped frame at one end thereof, and the connection roller is rotatably provided on the U-shaped frame.
3. A method for operating a safety switch to be powered on or off, characterized in that the safety switch to be powered on or off by two-time pressing according to any one of claims 1 to 2 is used to power on or off;
the pressing rod is pressed for the first time, the connecting roller walks on the electrified first walking surface and keeps the power-off state;
pressing the pressing rod for the second time, wherein the connecting roller travels on a second traveling surface and finally realizes energization;
pressing the pressing rod for the third time, wherein the connecting roller runs on the first power-off running surface and keeps a power-on state;
pressing the pressing rod for the fourth time, and enabling the connecting roller to walk on the power-off second walking surface to finally realize power-off;
pressing the pressing rod four times is an on-off electrical cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282206.8A CN113035618B (en) | 2021-03-16 | 2021-03-16 | Safety switch capable of realizing power-on or power-off by pressing twice and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282206.8A CN113035618B (en) | 2021-03-16 | 2021-03-16 | Safety switch capable of realizing power-on or power-off by pressing twice and operation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113035618A CN113035618A (en) | 2021-06-25 |
| CN113035618B true CN113035618B (en) | 2022-12-06 |
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| CN202110282206.8A Active CN113035618B (en) | 2021-03-16 | 2021-03-16 | Safety switch capable of realizing power-on or power-off by pressing twice and operation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906876Y (en) * | 2006-04-07 | 2007-05-30 | 李富雄 | Misoperation prevention structure for key switch |
| CN101533730A (en) * | 2008-03-11 | 2009-09-16 | 星电株式会社 | Push-button switch |
| CN208478202U (en) * | 2018-08-09 | 2019-02-05 | 浙江三锋实业股份有限公司 | A kind of safety switch construction of grass trimmer |
| CN111261441A (en) * | 2020-01-19 | 2020-06-09 | 李兆纯 | Prevent gaseous fire extinguishing systems of track traffic of mistake jet-propelled promptly to start and stop button |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204390951U (en) * | 2015-02-06 | 2015-06-10 | 东莞市凯华电子有限公司 | Post rod type keyboard switch |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2906876Y (en) * | 2006-04-07 | 2007-05-30 | 李富雄 | Misoperation prevention structure for key switch |
| CN101533730A (en) * | 2008-03-11 | 2009-09-16 | 星电株式会社 | Push-button switch |
| CN208478202U (en) * | 2018-08-09 | 2019-02-05 | 浙江三锋实业股份有限公司 | A kind of safety switch construction of grass trimmer |
| CN111261441A (en) * | 2020-01-19 | 2020-06-09 | 李兆纯 | Prevent gaseous fire extinguishing systems of track traffic of mistake jet-propelled promptly to start and stop button |
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