CN109585192B - Speed reducer for reducing impact energy of micro switch - Google Patents
Speed reducer for reducing impact energy of micro switch Download PDFInfo
- Publication number
- CN109585192B CN109585192B CN201811468980.2A CN201811468980A CN109585192B CN 109585192 B CN109585192 B CN 109585192B CN 201811468980 A CN201811468980 A CN 201811468980A CN 109585192 B CN109585192 B CN 109585192B
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- China
- Prior art keywords
- rocker arm
- pressing
- micro switch
- rotating shaft
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003638 chemical reducing agent Substances 0.000 title description 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 230000009471 action Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 abstract description 17
- 235000014676 Phragmites communis Nutrition 0.000 description 10
- 230000007257 malfunction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/006—Elastic arms producing non linear counter force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
The invention discloses a speed reducing device for reducing the impact energy of a micro switch, which aims to provide a speed reducing mechanism with good vibration resistance, impact resistance and breaking performance and is mainly used for the micro switch, and the speed reducing device is realized by the following technical scheme: the spring connecting shaft is connected with the rocker arm rotating shaft through a tension spring, the rocker arm rotating shaft is hinged with the pressing rocker arm through a fork lug jack on the fixed end of the pressing rocker arm, and in a free state, the free end of the pressing rocker arm faces the transmission element contact of the micro switch and the pressing rocker arm rotates around the rotating shaft through the tension spring connected with the rocker arm rotating shaft; when the actuating piece stirs the pressing rocker arm to rotate clockwise, the power arm applies contact force to the micro-switch, and as the contact of the transmission element gradually stretches into the micro-switch to reach a specified stroke, the tension spring is stretched to apply work, the tension spring stretches to enable the contact force to gradually decrease, and the contact force becomes zero, so that impact energy for pressing the stroke of the driving rod of the micro-switch is relieved.
Description
Technical Field
The invention relates to a speed reducing mechanism for absorbing energy by a spring, in particular to a speed reducing mechanism for protecting a micro switch and replacing a traditional spring piece to reduce the impact energy of the micro switch.
Background
The micro switch is a quick switch which is pressed and actuated, and is called a sensitive switch because the contact distance of the switch is smaller. The working principle is that the external mechanical force acts on the action reed through the transmission element (such as a pin, a button, a lever, a roller and the like), and after energy is accumulated to a critical point, instantaneous action is generated, so that the movable contact and the fixed contact at the tail end of the action reed are quickly connected or disconnected. The switch device is a switch device which enables a circuit to be switched on and off through small stroke and small action force, and is suitable for various automatic control devices. When external mechanical force acts on the operation button, the operation button moves downwards, and the spring is stretched through the drag hook. When the spring is pulled to a certain length, the movable reed moves downwards rapidly, and the contact at the right end of the movable reed turns to be contacted with the normally open contact below, so that the conversion of a circuit is realized. The microswitch has a minute contact space and a quick-action mechanism, and the contact mechanism for performing a switching operation with a predetermined stroke and a predetermined force is covered with a housing, and the outside of the housing is provided with a kind of switch of an actuator and a driving lever. In general, after wiring a terminal portion with a wire, the plastic package terminal is fixed by filling resin, and the exposed charged portion is eliminated, thereby improving the drip resistance. The micro switch is mainly applied to the fields of electronic equipment, instruments and meters, household appliances, aviation, aerospace and ships, a movable sheet is arranged in a shell of the micro switch, contacts which can be contacted with the movable sheet are arranged in the shell of the micro switch, and terminals for being connected with an external circuit are also arranged in the shell of the micro switch. When the button receives external force or stroke, the movable piece is moved and contacted and conducted with the set relevant terminal contact, and finally an external circuit connected with the inner terminal of the micro switch is conducted or disconnected.
The micro switch is switched on and off by the stress of an internal metal spring plate, and the distance between the metal plate and the bubble point of the base is called as the stroke. Because the internal mechanism has weak capability of resisting pressing impact and poor vibration resistance, the internal mechanism is easily damaged by various parts caused by mechanical impact, and the internal mechanism is generally required to meet the impact within the range of action characteristics, so that misoperation impact is avoided. The malfunction impact refers to an impact range in which the contact point closed by the impact is not separated in a predetermined time period when the microswitch is used. When the micro switch is switched, the micro switch can generate jumping and trembling to cause the faults of noise interference, pulse error and the like of an electronic circuit and sound equipment. The micro switch has the problems that the current switch can consume the contact points, the contact point interval is increased, the stress distance MD is increased, and the sensitivity is reduced. For the same switching mechanism, the smaller the contact interval, the smaller the difference distance MD, the higher the sensitivity, and the longer the mechanical life, but the direct current breaking performance, vibration resistance and impact resistance are disadvantageous. In addition to the speed limit (economic speed) at which the amount of arcing is effectively reduced, the micro-switch has a limit of mechanical problems, and particularly if the switching speed is too high, the impact energy of the movable contact and the fixed contact becomes large when the switching speed is closed, and an arc is generated by a jump phenomenon (vibration or friction closure) formed by the impact, and at this time, the contact is seriously lost, and a circuit is sometimes not opened, so that the contact is melted. A mechanism for performing such a rapid operation generally uses a spring mechanism having a dead point (a critical point of operation when jumping from one state to another state). Mechanical reversal of the snap-action mechanism can result in reversal time. Vibration of the movable contact when it impacts the fixed contact generates vibration time. The unstable time and the vibration time may heat the contact to melt the contact, and may cause malfunction of the electronic circuit after the contact is connected to the electronic circuit. When the drive rod of the switch is rapidly recovered and impacted, the drive rod may be damaged and the service life of the drive rod may be shortened. When the fixed switch is installed, if the spring washer is directly fastened, the spring washer may be trapped in the resin to generate cracks. Further, when the screw is tightened, an excessive impact and harmonics may be generated when using a socket wrench or the like, and even adhesion of the contact and breakage of the switch may be caused. If there is a sharp temperature change, thermal shock can cause the switch to loosen, causing failure. When the switch is subjected to continuous vibration and impact, the generated abrasion powder may cause problems such as poor contact, abnormal operation, and reduced durability of the contact. Further, if the vibration or impact is excessive, malfunction, breakage, or the like of the contact may occur, and therefore, it is necessary to mount the contact at a position where the vibration or impact is not received and in a direction where resonance is not generated. Micro-switch faults, secondary wiring contact aging and the like can influence the safe operation of the whole power system. In order to prevent the damage of the switch caused by the short circuit of the circuit, the traditional micro switch adopts a structure of externally increasing a lever reed to increase the overstroke and the anti-pressing impact capability of the micro switch, but under most use environments, the movement speed of the actuating element is high, the impact is large (for example, the movement speed of a cabin door lock mechanism reaches several meters per second), and the buffering and energy absorbing effects of the lever reed structure can not meet the use requirements any more.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the reducing mechanism which is used for reducing the impact energy of the micro switch and is good in vibration resistance, impact resistance and breaking performance, so that the problems that the moving speed of an actuating piece is high, the impact is large, and the energy absorption effect of a lever reed type buffer mechanism does not meet the requirement in use under most use environments are solved, and the service life of the micro switch is prolonged.
The technical scheme adopted for solving the technical problems is as follows: a speed reduction device for reducing the impact energy of a microswitch comprising: the fixed body of fixed micro-gap switch 2, its characterized in that: the T-shaped support arm 1 for mounting the micro switch 2 is arranged on the fixed body, and the contact of the transmission element of the micro switch 2 is fixed through the backboard of the T-shaped support arm 1; one end of a T-shaped transverse seat of the T-shaped support arm 1 is fixedly connected to a lower connecting plate through a spring connecting shaft 7, the other end of the T-shaped transverse seat is fixedly connected to the connecting plate through a limiting pin B, the free end of the T-shaped transverse seat is connected with a pressing rocker arm 3 through a rotating shaft 4, and the rotating shaft 4 is arranged in a resistance arm fulcrum hole at the free position of the pressing rocker arm 3; the spring connecting shaft 7 is connected with the rocker arm rotating shaft 8 through the tension spring 5, the rocker arm rotating shaft 8 is hinged with the pressing rocker arm 3 through a fork lug jack on the fixed end of the pressing rocker arm 3, in a free state, the free end of the pressing rocker arm 3 faces the transmission element contact of the micro switch 2, and the pressing rocker arm 3 rotates around the rotating shaft 4 through the tension spring 5 connected with the rocker arm rotating shaft 8; when the actuating member toggles the pressing rocker arm 3 to rotate clockwise, the power arm applies contact force to the micro switch 2, and as the contact of the transmission element gradually stretches into a specified stroke, the tension spring 5 is stretched to apply work, the contact force is gradually reduced by the stretching of the tension spring 5, and the contact force becomes zero, so that the impact energy for pressing the stroke of the driving rod of the micro switch 2 is relieved.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, one end of the T-shaped transverse seat of the T-shaped support arm 1 is fixedly connected with a connecting plate below through the tension spring connecting shaft 7, the other end of the T-shaped transverse seat is fixedly connected with the connecting plate through the limiting pin B, the free end of the T-shaped transverse seat is connected with the pressing rocker arm 3 through the rotating shaft 4, the rotating shaft 4 is arranged in a resistance arm fulcrum hole at the free position of the pressing rocker arm 3, the formed tension spring absorbs the impact energy of the actuating piece of the micro switch to replace the traditional lever reed type structure to press the micro switch, the impact of the actuating piece on the micro switch is slowed down, good vibration resistance, impact resistance and breaking resistance are provided for the micro switch, and the problems that the motion speed of the actuating piece of the micro switch is high and the impact is large in most use environments are solved, and the energy absorption effect of the lever reed type buffer mechanism in the prior art does not meet the requirement of use.
The invention adopts the pressing rocker arm connected with the tension spring to replace the traditional lever reed type structure to actuate the micro switch, the pressing force can be increased from (1-2) newtons to tens of newtons or even hundreds of newtons, the pressing rocker arm rotates under the stirring of the actuating element, the tension spring is stretched to do work, the pressing impact energy of the actuating element on the micro switch is reduced, the weak pressing impact resistance of an internal mechanism of the micro switch is overcome, the vibration resistance is poor, the damage of each part caused by mechanical impact is easily caused, the malfunction impact of the micro switch is avoided, and the service life of the micro switch is further prolonged.
Drawings
Fig. 1 is a schematic diagram of the configuration of a reduction gear for reducing the impact energy of a micro switch according to the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a rear view of fig. 1.
Fig. 4 is a cross-sectional view A-A of fig. 3.
Fig. 5 is a schematic diagram of the pressing rocker arm pressing micro switch position.
In the figure: the device comprises a T-shaped support arm 1, a micro switch 2, a pressing rocker arm 3, a rotating shaft 4, a tension spring 5, a limiting block 6, a spring connecting shaft 7 and a rocker arm rotating shaft 8.
The invention will be further described with reference to the drawings and examples, without thereby restricting the invention to the scope of the examples. All such concepts should be considered as being generic to the disclosure herein and to the scope of the invention.
Detailed Description
See fig. 1-3. In the embodiments described below, a speed reduction device for reducing the impact energy of a micro switch includes: a fixing body for fixing the micro switch 2. The T-shaped support arm 1 for mounting the micro switch 2 is arranged on the fixed body, and the contact of the transmission element of the micro switch 2 is fixed through the backboard of the T-shaped support arm 1; one end of a T-shaped transverse seat of the T-shaped support arm 1 is fixedly connected to a lower connecting plate through a spring connecting shaft 7, the other end of the T-shaped transverse seat is fixedly connected to the connecting plate through a limiting pin B, the free end of the T-shaped transverse seat is connected with a pressing rocker arm 3 through a rotating shaft 4, and the rotating shaft 4 is arranged in a resistance arm fulcrum hole at the free position of the pressing rocker arm 3; the spring connecting shaft 7 is connected with the rocker arm rotating shaft 8 through the tension spring 5, the rocker arm rotating shaft 8 is hinged with the pressing rocker arm 3 through a fork lug jack on the fixed end of the pressing rocker arm 3, in a free state, the free end of the pressing rocker arm 3 faces the transmission element contact of the micro switch 2, and the pressing rocker arm 3 rotates around the rotating shaft 4 through the tension spring 5 connected with the rocker arm rotating shaft 8; when the actuating member toggles the pressing rocker arm 3 to rotate clockwise, the power arm applies contact force to the micro switch 2, and as the contact of the transmission element gradually stretches into a specified stroke, the tension spring 5 is stretched to apply work, the contact force is gradually reduced by the stretching of the tension spring 5, and the contact force becomes zero, so that the impact energy for pressing the stroke of the driving rod of the micro switch 2 is relieved.
See fig. 4 and 5. The T-shaped support arm 1 is provided with a rectangular hole groove for assembling the micro switch 2, and a transmission element contact of the micro switch 2 faces the free end of the pressing rocker arm 3 through a back plate of the rectangular hole groove. The back end of the rectangular hole groove is provided with a transmission element contact of the parallel micro switch 2, and a limiting block 6 which can prevent the pressing stroke of the pressing rocker arm 3 to the micro switch from exceeding the allowable range. The tension spring 5 is connected between the spring connecting shaft 7 and the rocker arm rotating shaft 8, the rocker arm rotating shaft 8 is connected with the pressing rocker arm 3 through an assembly hole on the fixed end of the pressing rocker arm 3, and the rotating shaft 4 is movably connected with the pressing rocker arm 3 through a T-shaped transverse seat and a resistance arm fulcrum hole on the power action line of the pressing rocker arm 3. The limiting groove positioned at the rear of the rotating shaft 4 is formed in the power action line on the inner side of the pressing rocker arm 3, and in a free state, the limiting groove on the pressing rocker arm 3 is kept at the limiting position of the limiting pin B through the tension spring 5.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications, such as automatic multi-speed changes by the size of the actual EIRP, and other applications for configuring phased array antennas, can be made without departing from the principles of the present invention, and such variations and modifications are considered to be within the scope of the present invention.
Claims (4)
1. A speed reduction device for reducing the impact energy of a microswitch comprising: fixed body of fixed micro-gap switch (2), its characterized in that: the T-shaped support arm (1) for mounting the micro switch (2) is arranged on the fixed body, and the contact of the transmission element of the micro switch (2) is fixed through the backboard of the T-shaped support arm (1); one end of a T-shaped transverse seat of the T-shaped support arm (1) is fixedly connected to a connecting plate below the T-shaped transverse seat through a spring connecting shaft (7), the other end of the T-shaped transverse seat is fixedly connected to the connecting plate through a limiting pin B, the free end of the T-shaped transverse seat is connected with a pressing rocker arm (3) through a rotating shaft (4), and the rotating shaft (4) is arranged in a resistance arm fulcrum hole at the free position of the pressing rocker arm (3); the spring connecting shaft (7) is connected to the rocker arm rotating shaft (8) through a tension spring (5), the rocker arm rotating shaft (8) is hinged to the pressing rocker arm (3) through a fork lug jack on the fixed end of the pressing rocker arm (3), in a free state, the free end of the pressing rocker arm (3) faces to a transmission element contact of the micro switch (2), and the pressing rocker arm (3) rotates around the rotating shaft (4) through the tension spring (5) connected to the rocker arm rotating shaft (8); when the actuating piece stirs the pressing rocker arm (3) to rotate clockwise, the power arm is applied to the micro switch (2) with contact point contact force, as the contact point of the transmission element gradually stretches into the transmission element to reach the specified stroke, the tension spring (5) is stretched to apply work, the contact point contact force of the tension spring (5) is gradually reduced, the contact point contact force becomes zero, thereby reducing the impact energy of the driving rod stroke of the pressing micro switch (2), the tension spring (5) is connected between the spring connecting shaft (7) and the rocker arm rotating shaft (8), the rocker arm rotating shaft (8) is connected with the pressing rocker arm (3) through an assembly hole on the fixed end of the pressing rocker arm (3), and the rotating shaft (4) is movably connected with the pressing rocker arm (3) through a T-shaped transverse seat and a resistance arm fulcrum hole on the power action line of the pressing rocker arm (3); a limit groove positioned at the rear of the rotating shaft (4) is formed in the inner side power action line of the pressing rocker arm (3), and in a free state, the limit groove on the pressing rocker arm (3) is kept at the limit position of the limit pin B through a tension spring (5).
2. The reduction gear for reducing the impact energy of a micro switch according to claim 1, wherein: the T-shaped support arm (1) is provided with a rectangular hole groove for assembling the micro switch (2).
3. The reduction gear for reducing the impact energy of a micro switch according to claim 2, wherein: the transmission element contact of the microswitch (2) faces the free end of the pressing rocker arm (3) through the rectangular hole slot backboard.
4. The reduction gear for reducing the impact energy of a micro switch according to claim 2, wherein: the back end of the rectangular hole groove is provided with a transmission element contact of the parallel micro switch (2), and a limiting block (6) for preventing the pressing stroke of the pressing rocker arm (3) on the micro switch from exceeding the allowable range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468980.2A CN109585192B (en) | 2018-12-04 | 2018-12-04 | Speed reducer for reducing impact energy of micro switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468980.2A CN109585192B (en) | 2018-12-04 | 2018-12-04 | Speed reducer for reducing impact energy of micro switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109585192A CN109585192A (en) | 2019-04-05 |
| CN109585192B true CN109585192B (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811468980.2A Active CN109585192B (en) | 2018-12-04 | 2018-12-04 | Speed reducer for reducing impact energy of micro switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585192B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614719B (en) * | 2020-12-14 | 2022-11-11 | 兰州空间技术物理研究所 | Microswitch triggering mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331691A (en) * | 2002-05-10 | 2003-11-21 | Mikku Enterprise:Kk | Microswitch |
| CN101436493A (en) * | 2008-12-05 | 2009-05-20 | 常熟开关制造有限公司(原常熟开关厂） | Auxiliary switch for circuit breaker |
| CN103441016A (en) * | 2013-08-30 | 2013-12-11 | 石家庄八五零电子有限公司 | Power type microswitch |
| CN103670109A (en) * | 2013-12-31 | 2014-03-26 | 南京康尼机电股份有限公司 | Switch assembly of urban rail vehicle sliding door |
| CN107026042A (en) * | 2017-06-05 | 2017-08-08 | 漳州聚安美电气科技有限公司 | The spacing universal switch of fine motion list of dual spring |
| KR20180102810A (en) * | 2017-03-08 | 2018-09-18 | 엘에스오토모티브테크놀로지스 주식회사 | Micro-switch for power window switch unit and power window switch unit for vehicle having the same |
| CN209118946U (en) * | 2018-12-04 | 2019-07-16 | 四川凌峰航空液压机械有限公司 | Microswitch buffers actuating mechanism |
-
2018
- 2018-12-04 CN CN201811468980.2A patent/CN109585192B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331691A (en) * | 2002-05-10 | 2003-11-21 | Mikku Enterprise:Kk | Microswitch |
| CN101436493A (en) * | 2008-12-05 | 2009-05-20 | 常熟开关制造有限公司(原常熟开关厂） | Auxiliary switch for circuit breaker |
| CN103441016A (en) * | 2013-08-30 | 2013-12-11 | 石家庄八五零电子有限公司 | Power type microswitch |
| CN103670109A (en) * | 2013-12-31 | 2014-03-26 | 南京康尼机电股份有限公司 | Switch assembly of urban rail vehicle sliding door |
| KR20180102810A (en) * | 2017-03-08 | 2018-09-18 | 엘에스오토모티브테크놀로지스 주식회사 | Micro-switch for power window switch unit and power window switch unit for vehicle having the same |
| CN107026042A (en) * | 2017-06-05 | 2017-08-08 | 漳州聚安美电气科技有限公司 | The spacing universal switch of fine motion list of dual spring |
| CN209118946U (en) * | 2018-12-04 | 2019-07-16 | 四川凌峰航空液压机械有限公司 | Microswitch buffers actuating mechanism |
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| Publication number | Publication date |
|---|---|
| CN109585192A (en) | 2019-04-05 |
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