CN-224232556-U - Explosion-proof anticorrosive button

CN224232556UCN 224232556 UCN224232556 UCN 224232556UCN-224232556-U

Abstract

The utility model provides an explosion-proof anticorrosive button, including insulating housing, press the subassembly, and first sealing member, the axial link up on the insulating housing is equipped with the shoulder hole, the shoulder hole is including the diameter is the first hole section that reduces in proper order, the second hole section, and the third hole section, press the subassembly including pressing the lid, press the button feeler lever, and elastic component, press the lid and first hole section sliding connection cooperation, press the button feeler lever and be connected the cooperation with third hole Duan Huadong, and press the lid tight connection cooperation, still form the explosion-proof joint face between button feeler lever and the third hole section, the elastic component is spacing locate in the second hole section, the top of elastic component acts on the button feeler lever, the tight cover of inner edge of first sealing member is fixed on pressing the lower part jack of lid, the outward flange of first sealing member is tightly fixed in first hole section department. The utility model effectively prevents the invasion of corrosive gas, effectively avoids the explosion problem caused by the entry of dust in external gas into the equipment from the gap, and is safe to use.

Inventors

LIN GUANGHAI
Lin Zanqing
LIN MENG
LIN GUANGYIN
YUAN HUI
MA GUIYE
ZHANG NAN

Assignees

沈海防爆科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250411

Claims (8)

1. An explosion-proof anti-corrosion button is arranged on a button sealing installation panel and is characterized in that the button comprises an insulating shell (1), a pressing component and a first sealing piece (2), wherein a stepped hole is formed in the insulating shell (1) in an axial penetrating mode, the stepped hole comprises a first hole section (3), a second hole section (4) and a third hole section (5), the first hole section (3) and the third hole section (5) are arranged at two ends, the second hole section (4) is used for connecting the first hole section (3) and the third hole section (5), the diameters of the first hole section (3), the second hole section (4) and the third hole section (5) are sequentially reduced, the pressing component comprises a pressing cover (6), a button feeler lever (7) and an elastic piece (8), the pressing cover (6) is in sliding connection with the first hole section (3), the button feeler lever (7) is in sliding fit with the third hole section (5), the pressing cover (7) is in sliding fit with the elastic piece (8), the pressing cover (7) is in sliding fit with the third hole section (8), the pressing cover (7) is in sliding fit with the elastic piece (8), the inner edge of the first sealing element (2) is tightly sleeved and fixed on the lower jack of the pressing cover (6), and the outer edge of the first sealing element (2) is tightly fixed at the lower part of the first hole section (3).
2. An explosion-proof and corrosion-proof button according to claim 1, wherein the insulating housing (1) comprises an insulating bottom shell (10) and an insulating cover shell (11), the lower part of the first hole section (3), the second hole section (4) and the third hole section (5) are formed on the insulating bottom shell (10), the upper part of the first hole section (3) is formed on the insulating cover shell (11), an external thread part (12) is further formed on the outer peripheral wall surface of the upper end of the insulating bottom shell (10), an internal thread part (13) is further formed on the inner peripheral wall surface of the insulating cover shell (11), and the internal thread part (13) is matched with the external thread part (12).
3. The explosion-proof anti-corrosion button according to claim 2, wherein the first sealing member (2) comprises a sealing ring table (14) and a sealing ring skirt (15) which are sequentially connected from inside to outside, the sealing ring table (14) is tightly sleeved and fixed on the lower peripheral wall surface of the pressing cover (6), a first sealing convex lip (16) is circumferentially arranged at the top of the inner wall surface of the sealing ring table (14), the inner end of the sealing ring skirt (15) is of an arc concave structure and is connected to the bottom peripheral wall surface of the sealing ring table (14), the outer end of the sealing ring skirt (15) is of a straight structure and is pressed and fixed on the upper end surface of the insulating bottom shell (10) through the insulating cover shell (11), and a second sealing convex lip (17) is circumferentially arranged at the outer edges of the upper surface and the lower surface of the sealing ring skirt (15).
4. An explosion-proof and corrosion-proof button according to claim 3, wherein a first mounting ring groove (18) is formed at a position corresponding to a lower peripheral wall surface of the pressing cover (6), a second mounting ring groove (19) is formed at a position corresponding to an upper end surface of the insulating bottom case (10), the first mounting ring groove (18) is matched with the first sealing convex lip (16), and the second mounting ring groove (19) is matched with the second sealing convex lip (17) at the lower side.
5. An explosion-proof and corrosion-proof button according to claim 3, wherein a third mounting ring groove (20) is arranged below the external thread part (12) on the outer peripheral wall surface of the insulating bottom shell (10), the third mounting ring groove (20) is used for mounting a second sealing element, a supporting ring block (21) is further arranged at the joint of the first hole section (3) and the second hole section (4), and an inclined plane is arranged at the top of the inner wall of the supporting ring block (21).
6. The explosion-proof and corrosion-proof button according to claim 1, wherein the button further comprises a first limiting piece (22) and a second limiting piece (23) which are arranged on two sides of the third hole section (5), the first limiting piece (22) is detachably arranged at the corresponding position of the lower end of the button feeler lever (7), the second limiting piece (23) is integrally formed at the corresponding position of the upper end of the button feeler lever (7), and the top end of the elastic piece (8) acts on the second limiting piece (23).
7. The explosion-proof and corrosion-proof button according to claim 6, wherein a fourth installation annular groove (24) is arranged at the corresponding position of the lower end of the button contact rod (7), the first limiting piece (22) is fixedly clamped with the fourth installation annular groove (24), a fifth installation annular groove (25) surrounding an insertion hole is further arranged at the lower part of the pressing cover (6), and the second limiting piece (23) is in embedded fit with the fifth installation annular groove (25).
8. An explosion-proof and corrosion-proof button according to claim 1, wherein the button further comprises a fixing seat (26), the fixing seat (26) is detachably connected to the lower end of the insulating shell (1), and a connecting structure (27) fixed on the explosion-proof switch is arranged on the fixing seat (26).

Description

Explosion-proof anticorrosive button Technical Field The utility model relates to the technical field of explosion-proof electrical equipment, in particular to an explosion-proof and corrosion-proof button. Background The button is an electric element which uses a transmission mechanism to press or break the movable contact and the static contact and realize circuit switching. The button is a master control electric appliance with simple structure and very wide application. In an electric automatic control circuit, it is used to manually issue control signals to control contactors, relays, electromagnetic starters, etc. The button mainly comprises button cap, reset spring, shell etc. and the ordinary button need not consider stronger leakproofness when the work is used, and the button that needs to use just needs stronger sealed effect in the more environment of dust, and the button sealed effect that needs to use in the more environment of dust is not strong and causes the hidden danger of explosion easily. Disclosure of utility model Aiming at the defects of the prior art, the utility model aims to provide the explosion-proof anti-corrosion button which has strong use tightness and can effectively isolate the entry of external gas, effectively avoid the explosion problem caused by the entry of dust in the external gas into the equipment from a gap and is safe to use. According to the technical scheme, the explosion-proof and corrosion-proof button comprises an insulating shell, a pressing assembly and a first sealing piece, wherein a stepped hole is formed in the insulating shell in a penetrating mode in the axial direction, the stepped hole comprises a first hole section, a second hole section and a third hole section, two ends of the first hole section and the third hole Duan Cheng are arranged, the second hole section is used for connecting the first hole section and the third hole section, the diameters of the first hole section, the second hole section and the third hole section are sequentially reduced, the pressing assembly comprises a pressing cover, a pressing contact rod and an elastic piece, the pressing cover is in sliding connection with the first hole section, the pressing contact rod is in connection with the third hole Duan Huadong, the pressing contact rod is in tight connection with the pressing cover, an explosion-proof joint surface is formed between the pressing contact rod and the third hole section, the elastic piece acts on the top of the sealing piece, and the elastic piece is fixedly arranged on the top of the sealing piece at the top of the sealing piece. The anti-explosion device has the advantages that through the sliding fit of the first hole section and the pressing cover and the sliding fit of the third hole section and the button feeler lever, the pressing cover is forced to drive the button feeler lever to move stably, the anti-explosion switch can be triggered stably to realize internal circuit conversion, the limitation of the position of the elastic piece is realized through the arrangement of the second hole section, the elastic piece drives the reset movement of the button feeler lever stably, and meanwhile, the setting of the anti-explosion joint surface is realized, so that the external gas is isolated, the explosion problem caused by the fact that dust in the external gas enters the anti-explosion switch from a gap between the button feeler lever and the third hole section is effectively avoided, the explosion isolation performance between the button feeler lever and the insulating shell is improved, the use tightness of the whole device is stronger, the invasion of corrosive gas is effectively prevented, the use is safer, and the split structure of the pressing cover and the button feeler lever is used according to different parts, different materials and different processing technologies can be applied, and the structural design is more reasonable. Further, the insulating housing comprises an insulating bottom shell and an insulating cover shell, the lower part of the first hole section, the second hole section and the third hole section are formed on the insulating bottom shell, the upper part of the first hole section is formed on the insulating cover shell, an external thread part is further formed on the outer peripheral wall surface of the upper end of the insulating bottom shell, an internal thread part is further formed on the inner peripheral wall surface of the insulating cover shell, and the internal thread part is matched with the external thread part. The technical scheme has the advantages that when the pressure cover and the button feeler lever are fixedly connected, the first sealing element is sleeved and fixed on the lower part of the pressure cover, so that the insulating shell adopts the assembly structure of the insulating bottom shell and the insulating cover shell, the lower part and the upper part of the first hole section are separated, t