CN109003845B - Small travel switch - Google Patents
Small travel switch Download PDFInfo
- Publication number
- CN109003845B CN109003845B CN201810192211.8A CN201810192211A CN109003845B CN 109003845 B CN109003845 B CN 109003845B CN 201810192211 A CN201810192211 A CN 201810192211A CN 109003845 B CN109003845 B CN 109003845B
- Authority
- CN
- China
- Prior art keywords
- contact piece
- insulating pad
- sealing cover
- guide rod
- face
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract 2
- 238000009434 installation Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect 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
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention discloses a small-sized travel switch which comprises a shell (1), an upper sealing cover (2), a push rod (3), an upper insulating pad (4), a lower insulating pad (5), a contact piece A (6), a sliding contact piece (7), a guide rod (8), a contact piece B (9), a contact piece C (10), a spring (11) and a lower sealing cover (12). The travel switch has the advantages of small and exquisite appearance, simple and firm structure and high reliability. The flange is adopted for installation, and the single-pole double-throw type welding device is provided with two groups of welding contacts.
Description
Technical Field
The invention relates to a travel switch, in particular to a small travel switch.
Background
In the aerospace field, separable mechanisms are widely available, such as rocket stages and stages, satellite and launch vehicle mechanisms, satellite and spacecraft, solar wings and spacecraft, deployment antennas and spacecraft, and the like. The current common separation detection device is provided with a travel switch and a micro switch, and the common characteristics of the switch devices are small volume, high reliability and no difference between the working principle and the civil similar devices. The size of the miniature travel switch is generally about 30 mm.
Disclosure of Invention
The invention aims to provide a small-sized travel switch, which further reduces the size of the travel switch.
The technical scheme of the invention is as follows: the small travel switch is characterized by comprising a shell, an upper sealing cover, a push rod, an upper insulating pad, a lower insulating pad, a contact piece A, a sliding contact piece, a guide rod, a contact piece B, a contact piece C, a spring and a lower sealing cover;
The shell is an open cuboid cavity piece, a1 round through hole is formed in the top of the cavity, 2 rectangular through holes are formed in the front of the cavity, holes are formed in the lower surface of the cavity, and mounting flanges are arranged on the left side and the right side of the cavity;
the upper sealing cover is a block cuboid with a strip-shaped hole in the middle;
the ejector rod is a segmented cylinder, and the lower end surface of the ejector rod is provided with a threaded hole;
The upper insulating pad is an inverted concave block body, and a round hole is formed in the middle of the upper insulating pad;
The lower insulating pad is a circular pad, provided with a first-stage step and provided with a round hole in the middle;
The contact sheet A, the contact sheet B and the contact sheet C are formed by bending strip-shaped metal sheets Shape bending sheet metal,/>A round through hole is arranged at the upper end handle part of the contact piece A, and a guide lug is arranged at the side surface of the bottom end of the contact piece A;
The sliding contact piece is a U-shaped bent metal piece, and a round hole is formed in the middle of the sliding contact piece;
the guide rod is a segmented cylinder, the middle part of the guide rod is provided with a step, and the upper end of the guide rod is provided with threads;
The spring is a pressure spring;
The lower sealing cover is a block cuboid with a strip-shaped hole, a cylindrical shaft is arranged at the upper end perpendicular to the end face, a round hole is arranged in the center of the upper end of the shaft, the hollow shaft has the functions of guide rod guiding, supporting springs and a fixed contact piece C, and a ventilation round hole is arranged at the lower end of the lower sealing cover;
The contact piece A and the contact piece B are fixedly arranged in the strip-shaped holes of the upper sealing cover, the 2 upper sealing covers are fixedly arranged in the rectangular holes on the shell, the ejector rod is inserted into the round holes at the upper end of the shell, the upper insulating pad, the sliding contact piece and the lower insulating pad are sleeved on the upper half section of the guide rod in an up-down sequence, the thread section of the guide rod is screwed into the threaded hole of the ejector rod, the lower end face of the ejector rod is tightly pressed with the upper end face of the upper insulating pad, the upper end face of the guide rod step is tightly pressed with the lower end face of the lower insulating pad, the spring is sleeved on the shaft of the lower sealing cover, the lower end of the guide rod is inserted into the sliding hole of the lower sealing cover, the lower end of the spring is contacted with the upper end face of the cuboid of the lower sealing cover, and the upper end of the spring is contacted with the lower end face of the lower insulating pad.
The invention has the advantages that:
1. The size of the small travel switch is smaller than that of other small travel switches, and the size is about 20 mm;
2. compared with the small travel switch in the market, the small travel switch provided by the invention has the advantages of simple structure and high reliability.
Drawings
FIG. 1 is an external view of a small travel switch in an extended state;
FIG. 2 is a perspective view of a compact travel switch in an extended position;
FIG. 3 is a cross-sectional view of a compact travel switch in an extended state;
Fig. 4 is a cross-sectional view of a compact travel switch in a compressed state.
Detailed Description
As shown in fig. 1, 2, 3 and 4, a small travel switch is characterized by comprising a shell 1, an upper sealing cover 2, a push rod 3, an upper insulating pad 4, a lower insulating pad 5, a contact piece A6, a sliding contact piece 7, a guide rod 8, a contact piece B9, a contact piece C10, a spring 11 and a lower sealing cover 12;
The shell 1 is an open cuboid cavity piece, a1 round through hole is formed in the top of the cavity, 2 rectangular through holes are formed in the front of the cavity, holes are formed in the lower surface of the cavity, and mounting flanges are arranged on the left side and the right side of the cavity;
the upper sealing cover 2 is a block cuboid with a strip-shaped hole in the middle;
the ejector rod 3 is a segmented cylinder, and a threaded hole is formed in the lower end face of the ejector rod;
the upper insulating pad 4 is an inverted concave block body, and a round hole is formed in the middle of the upper insulating pad;
the lower insulating pad 5 is a circular pad, provided with a first-stage step and a circular hole in the middle;
The contact sheet A6, the contact sheet B9 and the contact sheet C10 are formed by bending strip-shaped metal sheets Shape bending sheet metal,/>A round through hole is arranged at the upper end handle part of the contact piece A6, and a guide lug is arranged at the side surface of the bottom end of the contact piece A;
the sliding contact piece 7 is a U-shaped bending metal piece, and a round hole is formed in the middle of the sliding contact piece;
the guide rod 8 is a segmented cylinder, the middle part of the guide rod is provided with a step, and the upper end of the guide rod is provided with threads;
The spring 11 is a pressure spring;
the lower sealing cover 12 is a block cuboid with a strip-shaped hole, a cylindrical shaft is arranged at the upper end perpendicular to the end face, a round hole is arranged in the center of the upper end of the shaft, the hollow shaft has the functions of guiding the guide rod 8, supporting the spring 11 and fixing the contact piece C10, and a ventilation round hole is arranged at the lower end of the lower sealing cover 12;
The contact piece A6 and the contact piece B9 are fixed in the strip-shaped holes of the upper sealing cover 2,2 upper sealing covers 2 are fixed in the rectangular through holes on the shell 1, the ejector rod 3 is inserted into the round through holes at the upper end of the shell 1, the upper insulating pad 4, the sliding contact piece 7 and the lower insulating pad 5 are sleeved on the upper half section of the guide rod 8 in an up-down sequence, the threaded section of the guide rod 8 is screwed into the threaded hole of the ejector rod 3, the lower end face of the ejector rod 3 is tightly pressed with the upper end face of the upper insulating pad 4, the upper end face of the step of the guide rod 8 is tightly pressed with the lower end face of the lower insulating pad 5, the spring 11 is sleeved on the shaft of the lower sealing cover 12, the lower end of the guide rod 8 is inserted into the sliding hole of the lower sealing cover 12, the lower end of the spring 11 is contacted with the upper end face of the cuboid of the lower sealing cover 12, the upper end of the spring 11 is contacted with the lower end face of the lower insulating pad 5, and the cuboid of the lower sealing cover 12 is embedded into the hole at the lower end of the shell 1.
The working process comprises the following steps:
The travel switch is fixed through flanges at two sides of the shell 1;
As shown in fig. 3, in the free state, the spring 11 is in a slightly compressed state, the sliding contact piece 7 is simultaneously contacted with the contact piece A6 and the contact piece B9, the contact piece A6 is conducted with the contact piece B9, and the contact piece B9 is disconnected with the contact piece C10;
As shown in fig. 4, when the ejector pin 3 is pushed to contact with the housing 1 under pressure, since the ejector pin 3, the upper insulating pad 4, the lower insulating pad 5, the sliding contact piece 7 and the guide rod 8 are already fixed by threads, the upper insulating pad 4, the lower insulating pad 5, the sliding contact piece 7 and the guide rod 8 keep synchronous movement with the ejector pin 3, the spring 11 is pushed by the lower insulating pad to become the maximum compression state, the sliding contact piece 7 is simultaneously contacted with the contact piece B9 and the contact piece C10, the contact piece B9 is conducted with the contact piece C10, and the contact piece A6 is disconnected with the contact piece B9;
when the load on the jack 3 is removed, the travel switch is reset to the free state.
Claims (5)
1. The small travel switch is characterized by comprising a shell (1), an upper sealing cover (2), a push rod (3), an upper insulating pad (4), a lower insulating pad (5), a contact piece A (6), a sliding contact piece (7), a guide rod (8), a contact piece B (9), a contact piece C (10), a spring (11) and a lower sealing cover (12);
the shell (1) is an open cuboid cavity piece, a1 round through hole is formed in the top of the cavity, 2 rectangular through holes are formed in the front of the cavity, holes are formed in the lower surface of the cavity, and mounting flanges are arranged on the left side and the right side of the cavity;
The upper sealing cover (2) is a block cuboid with a strip-shaped hole in the middle;
The ejector rod (3) is a segmented cylinder, and a threaded hole is formed in the lower end face of the ejector rod;
the upper insulating pad (4) is an inverted concave block body, and a round hole is formed in the middle of the upper insulating pad;
The lower insulating pad (5) is a circular pad, provided with a first-stage step and provided with a round hole in the middle;
the contact sheet A (6), the contact sheet B (9) and the contact sheet C (10) are formed by bending strip-shaped metal sheets Shape bending sheet metal,/>The upper end handle part of the contact piece A (6) is provided with a round through hole, and the side surface of the bottom end of the contact piece A is provided with a guide lug;
The sliding contact piece (7) is a U-shaped bending metal piece, and a round hole is formed in the middle of the sliding contact piece;
The guide rod (8) is a segmented cylinder, the middle part of the guide rod is provided with a step, and the upper end of the guide rod is provided with threads;
the spring (11) is a pressure spring;
The lower sealing cover (12) is a block cuboid with a strip-shaped hole, a cylindrical shaft is arranged at the upper end perpendicular to the end face, a round hole is arranged in the center of the upper end of the shaft, and a ventilation round hole is arranged at the lower end of the shaft;
The contact piece A (6) and the contact piece B (9) are fixed in the strip-shaped holes of the upper sealing cover (2), the 2 upper sealing covers (2) are fixed in the rectangular through holes on the shell (1), the ejector rod (3) is inserted into the round through holes at the upper end of the shell (1), the upper insulating pad (4), the sliding contact piece (7) and the lower insulating pad (5) are sleeved on the upper half section of the guide rod (8) in an up-down sequence, the threaded section of the guide rod (8) is screwed into the threaded holes of the ejector rod (3), the lower end face of the ejector rod (3) is tightly pressed with the upper end face of the upper insulating pad (4), the upper end face of the step of the guide rod (8) is tightly pressed with the lower end face of the lower insulating pad (5), the spring (11) is sleeved on the shaft of the lower sealing cover (12), the lower end of the guide rod (8) is inserted into the sliding hole of the lower sealing cover (12), the lower end of the spring (11) is contacted with the upper end face of the cuboid of the lower sealing cover (12), the upper end of the spring (11) is contacted with the lower end face of the lower insulating pad (5), and the lower end face of the cuboid (12) is embedded into the hole of the lower sealing cover (1).
2. A miniature travel switch according to claim 1, characterized in that the upper cover (2) is arranged on the front side of the housing, avoiding interference of the wiring holes of the contact pieces with the flange mounting screws of the housing (1).
3. A miniature travel switch according to claim 1, characterized in that the side of the bottom end of the contact a (6) is provided with guide lugs.
4. A miniature travel switch according to claim 1, characterized in that the lower cover (12) is provided with a hollow shaft, which has the function of guiding the guide rod (8), supporting the spring (11) and fixing the contact piece C (10).
5. A miniature travel switch according to claim 1, wherein the flange of the housing (1) is not limited to this arrangement, and the flange may be provided at any position of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192211.8A CN109003845B (en) | 2018-03-09 | 2018-03-09 | Small travel switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192211.8A CN109003845B (en) | 2018-03-09 | 2018-03-09 | Small travel switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109003845A CN109003845A (en) | 2018-12-14 |
| CN109003845B true CN109003845B (en) | 2024-04-19 |
Family
ID=64573192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810192211.8A Active CN109003845B (en) | 2018-03-09 | 2018-03-09 | Small travel switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109003845B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741982A (en) * | 2018-12-21 | 2019-05-10 | 温州医科大学 | Travel switch pre-installation center |
| CN112274242B (en) * | 2020-10-22 | 2023-06-30 | 四川大学华西第四医院 | A kind of radio wave knife with convenient power adjustment |
| CN113299497B (en) * | 2021-06-23 | 2022-07-05 | 天津盈科卓控科技有限公司 | Cylindrical travel switch |
| CN114256009B (en) * | 2021-11-09 | 2023-07-14 | 中国长江电力股份有限公司 | Travel switch for detecting wind brake of water turbine unit and detection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220564A (en) * | 1968-08-16 | 1971-01-27 | Cutler Hammer Inc | Ultra-miniature slide contact pushbutton switch |
| JPS63158719A (en) * | 1986-12-22 | 1988-07-01 | 株式会社ナブコ | Stroke switch |
| US6512191B1 (en) * | 2000-04-13 | 2003-01-28 | Matsushita Electric Industrial Co., Ltd. | Push-switch and method for manufacturing the same |
| CN102629528A (en) * | 2012-04-14 | 2012-08-08 | 桂林航天电子有限公司 | Clapping contact travel switch |
| CN203055706U (en) * | 2012-12-13 | 2013-07-10 | 陈杰 | Stroke switch |
| CN205487786U (en) * | 2016-02-05 | 2016-08-17 | 永鸥电气有限公司 | Travel switch |
| CN207925331U (en) * | 2018-03-09 | 2018-09-28 | 北京微分航宇科技有限公司 | A kind of small-sized travel switch |
-
2018
- 2018-03-09 CN CN201810192211.8A patent/CN109003845B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220564A (en) * | 1968-08-16 | 1971-01-27 | Cutler Hammer Inc | Ultra-miniature slide contact pushbutton switch |
| JPS63158719A (en) * | 1986-12-22 | 1988-07-01 | 株式会社ナブコ | Stroke switch |
| US6512191B1 (en) * | 2000-04-13 | 2003-01-28 | Matsushita Electric Industrial Co., Ltd. | Push-switch and method for manufacturing the same |
| CN102629528A (en) * | 2012-04-14 | 2012-08-08 | 桂林航天电子有限公司 | Clapping contact travel switch |
| CN203055706U (en) * | 2012-12-13 | 2013-07-10 | 陈杰 | Stroke switch |
| CN205487786U (en) * | 2016-02-05 | 2016-08-17 | 永鸥电气有限公司 | Travel switch |
| CN207925331U (en) * | 2018-03-09 | 2018-09-28 | 北京微分航宇科技有限公司 | A kind of small-sized travel switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109003845A (en) | 2018-12-14 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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