CN115437081B

CN115437081B - Explosion-proof connector

Info

Publication number: CN115437081B
Application number: CN202210893306.9A
Authority: CN
Inventors: 侯向陶; 杨双成; 李卫可; 韩落乐; 张明明; 胡国闯
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2024-05-14
Anticipated expiration: 2042-07-27
Also published as: CN115437081A

Abstract

The invention discloses an explosion-proof connector, which comprises a main body part, a protective shell and a tail sealing part; the protective shell is arranged outside the main body part, and the protective shell is in sealing connection with the main body part; the tail sealing component comprises a glue pouring sleeve which is integrally cylindrical, the glue pouring sleeve is arranged at the tail part of the protective shell, a sealing body which is formed by glue pouring is arranged in the glue pouring sleeve, so that components in the glue pouring sleeve are stuck to prevent damage, the quality of the connector is guaranteed, the problems that in the prior art, the maintenance is inconvenient, the on-site wiring is needed, and the modular production is difficult can be avoided, and meanwhile, the main body component can be protected through the coordination of the protective shell and the sealing body, so that the connector is suitable for being used in an explosion environment.

Description

Explosion-proof connector

Technical Field

The invention relates to the technical field of connectors, in particular to an explosion-proof connector.

Background

At present, the mode of accessing equipment in the flameproof chassis into the optical cable is generally as follows: and (3) opening holes in the explosion-proof case, installing and fixing the gram, and enabling the optical cable to penetrate through the horn mouth of the gram to be connected with equipment in the explosion-proof case. The cable is tightly held after the gram is locked, so that the cable is fixed.

The access mode of adopting the optical cable to penetrate the bell mouth in the prior art has the following defects: 1) The installation is inconvenient, the on-site wiring is needed, and the modular production is difficult; 2) And the maintenance is inconvenient, and when the optical cable is damaged, the optical cable needs to be unpacked, so that the maintenance difficulty is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the explosion-proof connector which is not only suitable for being used in an explosion environment, but also can avoid the problems that the maintenance is inconvenient, the on-site wiring is needed and the modularized production is difficult in the prior art.

In order to achieve the above purpose, the invention adopts the following specific scheme:

An explosion-proof connector, comprising:

a body member including a contact and a positioning seat;

the protective shell is arranged outside the main body part and is in sealing connection with the main body part;

The tail sealing component comprises a whole cylindrical glue filling sleeve, the glue filling sleeve is arranged at the tail part of the protective shell, and a sealing body formed by glue filling is arranged in the glue filling sleeve.

Further, the main body part further comprises a fixed sleeve and a signal transmission line which is connected with the contact piece and penetrates out of the fixed sleeve; the fixed sleeve is in sealing connection with the signal transmission line through the plugging body, the protective shell is in sealing connection with the fixed sleeve, and a sealing body formed by glue filling is arranged between the glue filling sleeve and the signal transmission line.

Further, a limiting step is arranged on the inner wall of the protective shell, the limiting step is provided with a stop surface facing the rear end, and the front end surface of the fixed sleeve corresponds to the stop surface and is used for axially limiting the fixed sleeve.

Further, the limiting step and the fixed sleeve are sealed by a sealing ring sleeved on the fixed sleeve.

Further, sealing is achieved between the protective shell and the fixed sleeve in a pre-gluing mode.

Further, sealing is achieved between the protective shell and the fixed sleeve in a mode that the fixed sleeve is strongly arranged in the protective shell.

Further, the plugging body is a protective sleeve, one end of the protective sleeve is tightly attached to the fixed sleeve, and the other end of the protective sleeve is tightly attached to the signal transmission line.

Further, the blocking body is a blocking piece, and sealing is realized between the fixing sleeve and the signal transmission line through the blocking piece formed by precoating glue.

Further, the blocking body is a blocking body which is strongly arranged in the through hole of the fixed sleeve, and one end of the blocking body, which is close to the sealing body, is provided with a blocking ring for preventing the blocking body from penetrating into the fixed sleeve.

Further, the rear end face of the sealing body exceeds the rear end face of the sealing body.

The beneficial effects are that:

(1) The explosion-proof connector comprises a main body part, a protective shell and a tail sealing part, wherein the tail sealing part comprises a glue filling sleeve, and glue liquid with a certain height is filled into the glue filling sleeve to form a sealing body, so that parts (such as a fixed sleeve, a signal transmission line and a plugging body) in the glue filling sleeve are stuck to prevent the parts in the glue filling sleeve from being damaged, the quality of the connector is ensured, the problems that the connector is inconvenient to maintain, needs field wiring and is difficult to modularly produce in the prior art can be avoided, and meanwhile, the main body part can be protected through the coordination of the protective shell and the sealing body, so that the connector is suitable for being used in an explosion environment.

(2) Before the tail part of the optical fiber connector for flameout is filled with glue, the sealing connection between the protective shell and the fixed sleeve and between the fixed sleeve and the number limiting transmission line is ensured, glue is prevented from penetrating into the optical fiber contact piece, so that the optical fiber contact piece can still slightly float in the fixed seat after the glue is solidified, and the optical fiber contact piece is not blocked when the headstock is plugged, and the guiding is smooth.

(3) The optical fiber connector for flameout has the advantages of strong signal transmission capability, low time delay, large communication capacity and interference resistance.

(4) The sealing connection modes between the protective shell and the fixed sleeve and between the fixed sleeve and the optical fiber are various, the sealing effect is safe and reliable, and the structure is simple.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 in the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural diagram of embodiment 2.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a schematic structural diagram of embodiment 3.

Fig. 6 is an exploded view of fig. 5.

Fig. 7 is a schematic structural diagram of the flameproof connector and the adapter connector after being plugged in each other.

Fig. 8 is a schematic structural view of an electrical connector.

Fig. 9 is a schematic structural diagram of a radio frequency connector.

The graphic indicia: 1. protective housing, 2, optical fiber contact, 3, positioning seat, 4, sealing washer, 5, fixed cover, 501, first ring section, 502, second ring section, 503, third ring section, 6, shutoff body, 601, protective sheath, 602, shutoff piece, 603, blocking body, 7, encapsulating cover, 8, sealing body, 9, optical fiber, 10, sealing glue piece, 11, strong dress arch, 12, blocking glue ring, 13, electric contact piece, 14, net twine, 15, radio frequency contact piece, 16, positioning cover, 17, inner housing, 18 shell.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

The explosion-proof connector comprises a main body part, a protective shell and a tail sealing part, wherein the main body part comprises a contact piece and a positioning seat, and the main body part extends forwards and backwards and takes one end where the contact piece is positioned as the front end; the protective shell 1 is arranged outside the main body part, and the protective shell 1 is in sealing connection with the main body part; the tail sealing part comprises a glue filling sleeve 7 which is integrally cylindrical, the glue filling sleeve 7 is arranged at the tail part of the protective shell 1, and a sealing body 8 formed by glue filling is arranged in the glue filling sleeve 7. It should be noted that, by forming the sealing body 8 by pouring glue, not only good adhesion of the cable but also sealing can be achieved. In addition, for long-distance sealing, the sealing effect of the encapsulation is better, and moreover, the connector can only be used for pouring glue from the tail part of the connector and can only be used for pouring glue vertically.

The main body part also comprises a fixed sleeve 5 and a signal transmission line which is connected with the contact piece and penetrates out of the fixed sleeve 5; the fixed sleeve 5 is in sealing connection with the signal transmission line through the blocking body 6, the protective shell 1 is in sealing connection with the fixed sleeve 5, the sealing body 8 formed by glue filling is arranged between the glue filling sleeve 7 and the signal transmission line, and the rear end face of the sealing body 8 needs to exceed the rear end face of the blocking body 6. The sealing body 8 formed by glue pouring can make the parts (such as the fixing sleeve, the signal transmission line and the plugging body) in the glue pouring sleeve be stuck to prevent the parts in the glue pouring sleeve from being damaged, and the connector is not only suitable for being used in an explosion environment, but also can avoid the problems of inconvenient maintenance, on-site wiring and difficult modularized production in the prior art.

It should be noted that, as shown in fig. 7, the connector adapted to the connector of the present invention includes an inner housing 17 and an outer housing 18, and after the flameproof connector and the adapting connector of the present invention are inserted, the inner housing 17, the protective housing 1 and the outer housing 18 are three-layer protection, and are pressure-resistant and smash-resistant, so that the connector is suitable for use in an explosion-proof environment.

The inner wall of the protective shell 1 is provided with a limiting step 101, the limiting step 101 is provided with a stop surface facing the rear end, and the front end surface of the fixed sleeve 5 corresponds to the stop surface and is used for axially limiting the fixed sleeve 5.

The protection shell 1 is in sealing connection with the fixed sleeve 5, and the sealing mode can be sealing through a sealing ring 4 sleeved on the fixed sleeve 5, sealing can be realized through a pre-gluing mode, and sealing can be realized through a mode of forcibly mounting the fixed sleeve 5 in the protection shell 1.

It should be explained that the rear section of the fixing sleeve 5 is in sealing connection with the optical fiber 9 through the blocking body 6, and the structure of the blocking body 6 is different in different sealing modes, but only the function of preventing the colloid from penetrating into the optical fiber contact piece 2 can be achieved.

Example 1

The flameproof connector in this embodiment is an optical fiber connector, as shown in fig. 1 and 2, and the optical fiber connector mainly includes the following parts: the optical fiber connector comprises a protective shell 1, an optical fiber contact piece 2, a positioning seat 3, a sealing ring 4, a fixing sleeve 5, a protective sleeve 601, a glue pouring sleeve 7, a sealing body 8 and a signal transmission line (optical fiber 9).

The optical fiber contact 2 is mounted in the positioning seat 3 and can slightly float in the positioning seat 3. The positioning seat 3 is embedded in the protective shell 1 and is tightly propped by the fixing sleeve 5, wherein in order to ensure the floating of the optical fiber contact 2, the optical fiber contact 2 and the positioning seat 3 are in clearance fit, and the axial limit of the optical fiber contact 2 can be realized by adopting the fixing sleeve 5. The inner wall of the protective shell 1 is provided with a limit step 101, the inner wall of the limit step 101 is a sealing surface, the sealing ring 4 is arranged at the sealing surface and is extruded by the protective shell 1 and the fixed sleeve 5. The fixing sleeve 5 is internally provided with a through hole with the extending direction consistent with that of the protective shell 1, and the optical fiber 9 penetrates out of the through hole of the fixing sleeve 5 after being bonded with the optical fiber contact piece 2. The plugging body 6 in this embodiment is a protective sleeve 601 in the form of a heat-shrinkable tube, one end of the protective sleeve 601 is tightly attached to the third ring section of the fixed sleeve 5 after heat shrinkage, and the other end is tightly attached to the optical fiber 9 after heat shrinkage. The glue filling sleeve 7 is fixed on the protective shell 1, glue is filled in the glue filling sleeve 7, the height of the glue exceeds the rear end face of the protective sleeve 601, and a sealing body 8 is formed after the glue is solidified, so that the fixing sleeve 5, the protective sleeve 601 and the optical fibers 9 in the glue filling sleeve 7 are adhered. After the glue solution is cured, the optical fiber contact member 2 installed in the positioning seat 3 can still slightly float, so that the optical fiber contact member 2 can not be blocked during the opposite insertion of the head seat, and the guiding is smooth.

In detail, as can be seen from fig. 2, the fixing sleeve 5 sequentially includes, from the front end to the back, a first circular ring segment 501, a second circular ring segment 502, and a third circular ring segment 503 that are integrally formed, where the first circular ring segment 501 is matched with the positioning seat 3, the second circular ring segment 502 is matched with the limiting step 101, a through hole is formed in the middle of the fixing sleeve 5, and the optical fiber 9 is adhered to the optical fiber contact element 2 and then passes through the through hole. The protective sleeve 601 is formed by integrally forming two annular sections with different inner diameters and outer diameters, the large inner diameter section is tightly attached to the third annular section of the fixed sleeve, and the small inner diameter section is tightly attached to the optical fiber 9.

Example 2

Referring to fig. 3 and 4, the flameproof connector in the present embodiment is a fiber optic connector, and the fiber optic connector in the present embodiment is different from the fiber optic connector in embodiment 1 in that: (1) Sealing is realized between the protective shell 1 and the fixed sleeve 5 in a pre-gluing mode, and a sealant piece 10 is formed after glue solution is solidified; (2) The blocking body 6 is a blocking piece 602, and the gap between the fixing sleeve 5 and the optical fiber 9 is sealed by the blocking piece 602 formed by pre-gluing; (3) The rear end face of the sealing body 8 exceeds the rear end face of the blocking piece 602.

Example 3

Referring to fig. 5 and 6, the flameproof connector in the present embodiment is a fiber connector, and the fiber connector in the present embodiment is different from the fiber connector in embodiment 1 in that: (1) The protection shell 1 and the fixed sleeve 5 are sealed in a mode of forcibly mounting the fixed sleeve 5 in the protection shell 1; (2) The blocking body 6 is a blocking body 603 which is strongly arranged in a through hole of the fixed sleeve 5, and one end of the blocking body 603, which is close to the sealing body 8, is provided with a blocking ring 12 for preventing the glue from penetrating into the fixed sleeve 5; (3) The rear end face of the sealing body 8 exceeds the rear end face of the blocking body 603.

In detail, in order to ensure the sealing effect after the strong assembly, a plurality of rings of strong assembly bulges 11 are arranged on the outer side wall of the plugging body 6. The outer side wall of the second circular ring section 502 of the fixed sleeve 5 is provided with a plurality of circles of strong-fitting bulges 11.

Example 4

The explosion-proof connector in this embodiment is an electrical connector, and fig. 8 is a schematic structural diagram of the electrical connector.

As can be seen from fig. 8, the electrical connector mainly comprises four parts: the protective shell 1, the electric contact 13, the positioning seat 3, the glue filling sleeve 7 and the protective tube 14, wherein the electric contact 13 is arranged in the positioning seat 3, the positioning seat 3 is embedded in the protective shell 1, the protective tube 14 is used for protecting a net wire, the electric contact 13 is connected with the net wire, glue is filled in the tail part of the protective shell 1 and the glue filling sleeve 7, the height of glue solution is required to exceed the front end surface of the protective tube 14, and the sealing body 8 is formed after the glue solution is solidified.

Example 5

The flameproof connector in this embodiment is a radio frequency connector, and fig. 9 is a schematic structural diagram of the radio frequency connector.

As can be seen from fig. 9, the rf connector mainly includes four parts: the radio frequency contact 15, positioning seat 3, positioning sleeve 16, protective housing 1 and encapsulating cover 7 integrated into one piece, the radio frequency contact 15 is installed in positioning seat 3, and positioning seat 3 is installed in positioning sleeve 16, and protective housing 1 is inside to positioning sleeve 16 locates protective housing 1, is equipped with the screw thread on the protective housing 1, and protective housing 1 is through setting up the screw thread on it and to inserting the corresponding screw thread cooperation locking cooperation of connector, realizes the connection of product. And the glue is filled into the glue filling sleeve 7, the glue solution is required to be higher than the rear end surface of the positioning sleeve 16, and the sealing body 8 is formed after the glue solution is solidified.

This Wen Weixiang section is prior art.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention with reference to the above embodiments, and any modifications and equivalents not departing from the spirit and scope of the present invention are within the scope of the claims appended hereto.

Claims

1. An explosion-proof connector, comprising:

a body part comprising a contact and a positioning seat (3);

the protective shell (1), the said protective shell (1) locates the outside of the body part, the sealed connection between body part and the protective shell (1);

The tail sealing component comprises a glue filling sleeve (7) which is integrally cylindrical, the glue filling sleeve (7) is arranged at the tail part of the protective shell (1), and a sealing body (8) formed by glue filling is arranged in the glue filling sleeve (7);

The main body part also comprises a fixed sleeve (5) and a signal transmission line which is connected with the contact piece and penetrates out of the fixed sleeve (5); the fixed sleeve (5) is in sealing connection with the signal transmission line through the blocking body (6), the protective shell (1) is in sealing connection with the fixed sleeve (5), and a sealing body (8) formed by glue filling is arranged between the glue filling sleeve (7) and the signal transmission line;

The novel protective device is characterized in that a limiting step (101) is arranged on the inner wall of the protective shell (1), the limiting step (101) is provided with a stop surface facing the rear end, and the front end surface of the fixed sleeve (5) corresponds to the stop surface and is used for axially limiting the fixed sleeve (5).

2. The explosion-proof connector of claim 1, wherein: the limiting step (101) and the fixed sleeve (5) are sealed by a sealing ring (4) sleeved on the fixed sleeve (5).

3. The explosion-proof connector of claim 1, wherein: the protection shell (1) and the fixed sleeve (5) are sealed in a pre-gluing mode.

4. The explosion-proof connector of claim 1, wherein: the protection shell (1) and the fixed sleeve (5) are sealed in a mode that the fixed sleeve (5) is strongly arranged in the protection shell (1).

5. The explosion-proof connector of claim 1, wherein: the plugging body (6) is a protective sleeve (601), one end of the protective sleeve (601) is tightly attached to the fixed sleeve (5), and the other end of the protective sleeve is tightly attached to the signal transmission line.

6. The explosion-proof connector of claim 1, wherein: the plugging body (6) is a plugging piece (602), and the fixing sleeve (5) and the signal transmission line are sealed by the plugging piece (602) formed by precoating glue.

7. The explosion-proof connector of claim 1, wherein: the blocking body (6) is a blocking body (603) which is strongly arranged in the through hole of the fixed sleeve (5), and one end of the blocking body (603) close to the sealing body (8) is provided with a blocking ring (12) for preventing the blocking body from penetrating into the fixed sleeve (5).

8. The explosion-proof connector of claim 1, wherein: the rear end face of the sealing body (8) exceeds the rear end face of the plugging body (6).