CN113571377B - High-emission overload fuze rear-seat electric switch - Google Patents
High-emission overload fuze rear-seat electric switch Download PDFInfo
- Publication number
- CN113571377B CN113571377B CN202110706132.6A CN202110706132A CN113571377B CN 113571377 B CN113571377 B CN 113571377B CN 202110706132 A CN202110706132 A CN 202110706132A CN 113571377 B CN113571377 B CN 113571377B
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- China
- Prior art keywords
- electric connection
- connection sheet
- contact pin
- fuze
- hole
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- 239000000463 material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920001875 Ebonite Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
- H01H35/141—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Fuses (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a high-emission overload fuze recoil electric switch, which comprises a body, a contact pin, an upper electric connecting piece, an insulating ring, a lower electric connecting piece and a back cover, wherein the contact pin is arranged on the body; the body is subjected to surface insulation treatment, a third-order through hole with the diameter firstly reduced and then increased is formed downwards along the central axis of the body, a first-order hole, a second-order hole and a third-order hole are sequentially formed, the contact pins are arranged in the first-order hole and the second-order hole, the upper electric connection piece, the insulating ring, the lower electric connection piece and the back cover are arranged in the third-order hole from top to bottom, and the contact pins and the back cover are fixed through body closing-in or spot riveting; the upper and lower electric connection sheets extend out of the body in opposite directions. The insulating ring can ensure that the squatting electric switch is in an off state at ordinary times, the half cone angle of the contact pin is smaller than the friction angle between the contact pin and the electric connection piece, so that the contact pin can realize self-locking and can not reset after the squatting trigger pierces and is communicated with the upper electric connection piece and the lower electric connection piece, and further, the fuse circuit is ensured to be kept in a stable on state for a long time. The fuze rear-seat electric switch has compact structure and small occupied space.
Description
Technical Field
The invention belongs to the technology of fuze switches, and particularly relates to a high-emission overload fuze post-sitting power-on switch.
Background
The power switch is one of the important components of the electromechanical fuse. The main function of the device is to control the working state of the circuit, the normally-open state of the power-on switch is realized, the switch is closed in the process of transmitting or impacting the target, and the circuit is communicated to work.
Regarding the fuze recoil electric switch, the main works in recent years are: wang Li a novel mechanical switch, chen Zhifeng, etc. improves the reliability of a latching type power connection switch. But these rear-seat electric switches are at 20000gAt squat overloads, 100% closure has not yet been achieved. These rear-seat electric switches are composed of mechanical structures such as mass blocks, hooks and springs, and have the main disadvantages of large volume, complex structure, poor reliability, difficult manufacture and high production cost.
Disclosure of Invention
The invention aims to provide a high-emission overload fuse post-sitting electric switch so as to meet the application requirement of small-caliber shell fuses in narrow and closed space, improve the working reliability of the fuse post-sitting electric switch and reduce the cost.
The technical solution for realizing the purpose of the invention is as follows: a high-emission overload fuze rear-seat electric switch comprises a body, a contact pin, an upper electric connecting piece, an insulating ring, a lower electric connecting piece and a back cover; a third-order through hole with the diameter firstly reduced and then increased is formed along the central axis of the body from top to bottom, the third-order through hole is sequentially provided with a first-order hole, a second-order hole and a third-order hole, the contact pin, the upper electric connection piece, the insulating ring, the lower electric connection piece and the back cover are arranged in the third-order hole from top to bottom, and the contact pin and the back cover are fixed through body closing-up or spot riveting; the upper and lower electric connection sheets extend out of the body in opposite directions.
Further, a circle of flange is arranged at the top of the outer side wall of the needle rod of the contact pin, the needle tip and the needle rod of the contact pin extend into the second-order hole, the flange is clamped on the step surface of the first-order hole and is riveted and fixed with the body, the contact pin is located right above the upper electric connection piece, and a gap exists between the contact pin and the needle rod.
Further, the upper electric connection sheet, the insulating ring, the lower electric connection sheet and the back cover are sequentially filled in the third-stage hole from top to bottom, wherein the upper electric connection sheet is contacted with the step end face of the third-stage hole, the insulating ring isolates the upper electric connection sheet from the lower electric connection sheet, and the back cover is used for supporting the lower electric connection sheet.
Compared with the prior art, the invention has the beneficial effects that:
(1) The half cone angle of the contact pin is smaller than the friction angle between the contact pin and the electric contact piece, the fuze circuit can be reliably connected under high emission overload, and the stable conduction state can be maintained for a long time, so that the electric connection reliability of the rear seat electric switch is greatly improved.
(2) The invention has simple and compact structure and low cost.
Drawings
Fig. 1 is an axial cross-sectional schematic view of a high emission overload fuse rear-seat electrical switch according to the present invention.
Fig. 2 is an isometric view of a power contact.
Fig. 3 is an isometric view of the body.
In the figure, 1 is a body, 2 is a contact pin, 3 is an upper electric contact, 4 is an insulating ring, 5 is a lower electric contact, and 6 is a back cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, the high-emission overload fuse rear seat electric switch provided by the invention comprises a body 1, a contact pin 2, an upper electric connection sheet 3, an insulating ring 4, a lower electric connection sheet 5 and a back cover 6; a third-order through hole which is firstly reduced and then increased is formed along the central axis of the body 1 from top to bottom, and sequentially comprises a first-order hole, a second-order hole and a third-order hole, wherein the diameter of the second-order hole is minimum, the contact pin 2, the upper electric connection sheet 3, the insulating ring 4, the lower electric connection sheet 5 and the back cover 6 are arranged in the third-order hole from top to bottom, and the contact pin 2 and the back cover 6 are fixed by closing in or riveting the body 1; the upper electric connection sheet 3 and the lower electric connection sheet 5 extend out of the body 1 in opposite extending directions.
Further, a circle of flange is arranged at the top of the outer side wall of the needle bar of the contact pin 2, the needle tip and the needle bar of the contact pin 2 extend into the second step hole, the flange is clamped on the step surface of the first step hole and is riveted and fixed with the body 1, the contact pin 2 is positioned right above the upper electric connection piece 3, and a gap exists between the contact pin 2 and the needle bar. The upper electric connection sheet 3, the insulating ring 4, the lower electric connection sheet 5 and the back cover 6 are sequentially filled in the third-stage hole from top to bottom, wherein the upper electric connection sheet 3 is contacted with the step end surface of the third-stage hole, the insulating ring 4 isolates the upper electric connection sheet 3 from the lower electric connection sheet 5, and the back cover 6 is used for supporting the lower electric connection sheet 5. The half cone angle of the tip of the contact pin 2 is smaller than the friction angle between the contact pin 2 and the upper contact pad 3. The contact pin 2 is made of hard copper alloy, and the surface of the contact pin is plated with tin. The uniform ends of the upper electric connection sheet 3 and the lower electric connection sheet 5 are inserted into the third-stage holes, the other ends extend out of the body 1, and the extending ends are respectively provided with a through hole. The body 1 is made of hard aluminum, and the surface of the body is insulated. The upper electric connection sheet 3 and the lower electric connection sheet 5 are identical in shape, size and material, and are made of soft red copper. The insulating ring 4 is made of hard plastic or hard rubber. The material of the back cover 6 is hard rubber or hard plastic.
The upper electric connection sheet 3 and the lower electric connection sheet 5 are isolated by the insulating ring 4 made of plastic or rubber, so that the electric connection switch can be ensured to be in an off state all the time. The half cone angle of the contact pin 2 of the power connection switch is smaller than the friction angle between the contact pin 2 and the power connection piece, so that the contact pin 2 can be self-locked after triggering to penetrate into the power connection piece.
In the service treatment stage, due to the effect of the flange of the contact pin 2, the contact pin 2 cannot sink to stab and stab the electric sheet even under the effect of reliable accidental impact such as vibration, collision, drop and the like.
After the projectile is launched, under the action of the overload of the launching, the flange of the contact pin 2 is sheared, and the needle parts of the flange sequentially penetrate into the upper and lower electric connection pieces 5 to be communicated. Meanwhile, the tip of the contact pin 2 pierces the back cover 6, and the friction force between the back cover 6 and the upper and lower contact plates 3 and 5 makes the contact pin 2 self-lock without resetting, and can maintain a good conduction state for a long time, thus greatly improving the reliability of the contact of the fuse back-seat contact switch.
The invention realizes the power connection reliability of the fuse post-sitting power connection switch by applying the principle of friction mechanics, realizes the self-locking of the contact pin 2 on the premise of basically not increasing the structural complexity, and ensures the power connection reliability of the fuse post-sitting power connection switch.
Claims (10)
1. The utility model provides a high transmission overload fuze squatting electric switch which characterized in that: comprises a body (1), a contact pin (2), an upper electric connection sheet (3), an insulating ring (4), a lower electric connection sheet (5) and a back cover (6); a third-order through hole with the diameter firstly reduced and then increased is formed along the central axis of the body (1) from top to bottom, a first-order hole, a second-order hole and a third-order hole are sequentially formed, the contact pin (2) is arranged in the first-order hole and the second-order hole, the upper electric connection sheet (3), the insulating ring (4), the lower electric connection sheet (5) and the back cover (6) are arranged in the third-order hole from top to bottom, and the contact pin (2) and the back cover (6) are closed or fixed by riveting through the body (1); the upper electric connection sheet (3) and the lower electric connection sheet (5) extend out of the body (1) in opposite extending directions.
2. The high emission overload fuze recoil electric switch of claim 1, wherein: a circle of flange is arranged at the top of the outer side wall of the needle rod of the contact pin (2), the needle point and the needle rod of the contact pin (2) extend into the second step hole, the flange is clamped on the step surface of the first step hole and is riveted and fixed with the body (1), the contact pin (2) is positioned right above the upper contact piece (3), and a gap exists between the contact pin and the needle rod.
3. The high emission overload fuze recoil electric switch of claim 2, wherein: the upper electric connection sheet (3), the insulating ring (4), the lower electric connection sheet (5) and the back cover (6) are sequentially filled in the third-order hole from top to bottom, wherein the upper electric connection sheet (3) is contacted with the step end face of the third-order hole, the insulating ring (4) isolates the upper electric connection sheet (3) from the lower electric connection sheet (5), and the back cover (6) is used for supporting the lower electric connection sheet (5).
4. The high emission overload fuze recoil electric switch of claim 2, wherein: the half cone angle of the needle tip of the contact pin (2) is smaller than the friction angle between the contact pin (2) and the upper electric contact piece (3).
5. The high emission overload fuze recoil electric switch of claim 2, wherein: the contact pin (2) is made of hard copper alloy, and the surface of the contact pin is plated with tin.
6. The high emission overload fuze recoil electric switch of claim 1, wherein: the uniform ends of the upper electric connection sheet (3) and the lower electric connection sheet (5) are inserted into the third-order holes, the other ends of the upper electric connection sheet and the lower electric connection sheet extend out of the body (1), and through holes are respectively formed in the extending ends.
7. The high emission overload fuze recoil electric switch of claim 1, wherein: the body (1) is made of hard aluminum, and the surface of the body is insulated.
8. The high emission overload fuze recoil electric switch of claim 1, wherein: the upper electric connection sheet (3) and the lower electric connection sheet (5) are identical in shape, size and material, and the material is soft red copper.
9. The high emission overload fuze recoil electric switch of claim 1, wherein: the insulating ring (4) is made of hard plastic or hard rubber.
10. The high emission overload fuze recoil electric switch of claim 1, wherein: the material of the back cover (6) is hard rubber or hard plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110706132.6A CN113571377B (en) | 2021-06-24 | 2021-06-24 | High-emission overload fuze rear-seat electric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110706132.6A CN113571377B (en) | 2021-06-24 | 2021-06-24 | High-emission overload fuze rear-seat electric switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113571377A CN113571377A (en) | 2021-10-29 |
| CN113571377B true CN113571377B (en) | 2024-03-19 |
Family
ID=78162632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110706132.6A Active CN113571377B (en) | 2021-06-24 | 2021-06-24 | High-emission overload fuze rear-seat electric switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113571377B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114372333B (en) * | 2022-03-23 | 2022-05-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Design method for high-emission overload resistant test model external power module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014003924U1 (en) * | 2014-05-05 | 2014-06-05 | Feinmetall Gmbh | Spring contact switching pin for testing a device under test |
| CN204514205U (en) * | 2015-03-17 | 2015-07-29 | 河北天圣机械工业有限公司 | A kind of self adaptation firing device of fuse |
| CN110972552B (en) * | 2013-12-19 | 2015-11-11 | 国营第三〇四厂 | Take mechanical switch of tortuous slot type |
| CN209199835U (en) * | 2019-01-03 | 2019-08-02 | 贵州航天电子科技有限公司 | A kind of inertia switch |
| CN212967527U (en) * | 2020-07-17 | 2021-04-13 | 北京恒星箭翔科技有限公司 | Mechanical inertial acceleration switch |
| CN112964140A (en) * | 2021-03-26 | 2021-06-15 | 南京理工大学 | Detonator dish spring recoil firing mechanism |
-
2021
- 2021-06-24 CN CN202110706132.6A patent/CN113571377B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110972552B (en) * | 2013-12-19 | 2015-11-11 | 国营第三〇四厂 | Take mechanical switch of tortuous slot type |
| DE202014003924U1 (en) * | 2014-05-05 | 2014-06-05 | Feinmetall Gmbh | Spring contact switching pin for testing a device under test |
| CN204514205U (en) * | 2015-03-17 | 2015-07-29 | 河北天圣机械工业有限公司 | A kind of self adaptation firing device of fuse |
| CN209199835U (en) * | 2019-01-03 | 2019-08-02 | 贵州航天电子科技有限公司 | A kind of inertia switch |
| CN212967527U (en) * | 2020-07-17 | 2021-04-13 | 北京恒星箭翔科技有限公司 | Mechanical inertial acceleration switch |
| CN112964140A (en) * | 2021-03-26 | 2021-06-15 | 南京理工大学 | Detonator dish spring recoil firing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113571377A (en) | 2021-10-29 |
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