CN111834829A

CN111834829A - Spark-proof electric connector with detachable resistance sleeve body

Info

Publication number: CN111834829A
Application number: CN201910321029.2A
Authority: CN
Inventors: 胡正宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-21
Filing date: 2019-04-21
Publication date: 2020-10-27

Abstract

The invention discloses a spark-proof electric connector with a detachable resistance sleeve body, which comprises a male plug and a female plug which are matched with each other, wherein a male positive electrode and a female negative electrode are arranged in the male plug, and a female positive electrode and a female negative electrode which are connected with the male plug in an inserted manner are arranged in the female plug and are respectively fixed in a male shell and a female shell; the female shell comprises an electrode shell and a rear cover plate; the female positive electrode is a sleeve body consisting of a front end electrode, a rear end electrode, an insulating sleeve body and a resistor which are not connected, the front end electrode is inserted into the front end of the insulating sleeve body, the rear end electrode is fixed in the insulating sleeve body by injection molding, and the front end electrode and the rear end electrode are not in contact; the resistor is arranged on the outer side of the insulating sleeve body, and two ends of the resistor are respectively connected with the front end electrode and the rear end electrode in series. The electric connector has the advantages that the components in the female and the positive electrodes can be disassembled, assembled and replaced on the premise of having the spark prevention function.

Description

Spark-proof electric connector with detachable resistance sleeve body

Technical Field

The invention relates to the field of electric connectors, in particular to a spark-proof electric connector with a detachable resistance sleeve body.

Background

When the existing electric connector is suitable for electrical appliances or devices with larger power, electrodes in a male plug and a female plug in the plug connector are in direct contact, instantaneous current is overlarge, a contact point is easy to cause spark phenomenon, and the socket or the electrical appliances can be burnt out and the human body can be injured seriously.

Chinese patent publication No. CN104716474A discloses an electrically connecting plug connector with a spark-proof function, which includes a male plug and a female plug, wherein a pair of electrodes suitable for being connected by plugging are respectively disposed in the male plug and the female plug, and a pair of electrodes in the male plug and the female plug are injection-molded in a casing, which is an injection-molded body; one electrode in the female plug is divided into two sections by an insulating layer: the front end electrode and the rear end electrode are connected with a resistor in series outside the front end electrode and the rear end electrode, the three are connectors, the resistor is arranged in a shell injection molding body between a pair of electrodes in the female plug, a positioning protrusion is arranged on the outer wall of the front end electrode, and the positioning protrusion is fixed in the injection molding body of the shell after injection molding.

Although the above-mentioned electric connection connector can prevent spark in the using process, the following problems still remain: the electrodes in the male plug and the female plug are respectively fixed in respective shells by injection molding and cannot be disassembled, so that the assembly of the electric connection plug connector is difficult, and once a certain electrode part is damaged, the whole plug connector is scrapped; in addition, because the front-end electrode and the resistor are also fixed in the shell injection molding body of the female plug, the whole electrode assembly cannot be detached and replaced after the front-end electrode and the resistor are damaged, and the whole electric connection plug connector can be scrapped; therefore, the problems of high use cost and resource waste exist in the practical use.

Disclosure of Invention

The invention aims to provide a spark-proof electric connector which can be disassembled and assembled on the premise of having a spark-proof function and can replace an electrode component.

The above object of the present invention is achieved by the following technical solutions:

a spark-proof electric connector with a detachable resistance sleeve body comprises a male plug and a female plug which are matched with each other, wherein a male positive electrode and a female negative electrode are arranged in the male plug, and a female positive electrode and a female negative electrode which are connected with the male plug in an inserted manner are arranged in the female plug and are respectively fixed in a male shell and a female shell;

the female shell comprises an electrode shell and a rear cover plate which is matched and buckled with the electrode shell;

the female positive electrode is designed into a detachable sleeve body, consists of a front end electrode, a rear end electrode, an insulating sleeve body and a resistor which are not connected, is inserted in an electrode shell, and has the structure that: the front end electrode is inserted into the front end of the insulating sleeve body, the rear end electrode is fixed in the insulating sleeve body by injection molding, and a gap is formed between the front end electrode and the rear end electrode which are arranged in the insulating sleeve body and are not in contact with each other;

the resistor is arranged on the outer side of the insulating sleeve body, and two ends of the resistor are respectively connected with the front end electrode and the rear end electrode in series;

one end of the front electrode is inserted and fixed in the insulating sleeve body, and the other end of the front electrode extends out of the insulating sleeve body and is connected with the resistor.

By adopting the technical scheme, when the male plug and the female plug are inserted, sparks are not easily generated at the moment of inserting the two electrodes; in addition, after the resistor is damaged, the female positive electrode can be continuously used only by detaching the female positive electrode from the electrode shell and then integrally replacing the female positive electrode or only replacing the resistor, so that the use cost is reduced; meanwhile, in production, the spark-proof electric connectors of various types can be obtained only by installing resistors with different resistance values, and the product has good universality. Moreover, one end of the front electrode is inserted and fixed in the insulating sleeve body, and the other end of the front electrode extends out of the insulating sleeve body and is connected with the resistor, so that the detachable function of the front electrode is realized, the front electrode is convenient to replace and maintain, and the maintenance cost of the electric connector is further reduced.

Further, the structure of the insulating sleeve body is as follows: the inner cavity of the resistor is provided with a mounting hole for the front electrode, the front end wall of the resistor is provided with a splicing groove for mounting the front electrode, and the outer side of the resistor is provided with a resistor;

the front electrode is a movable connecting piece consisting of a first sleeve body which is in splicing fit with the male electrode and a second sleeve body which is in splicing fit with the resistor, and a connecting part is arranged between the first sleeve body and the second sleeve body;

the two sides of the connecting part are connected with the inserting groove in a matching mode, one end of the resistor is installed and inserted in the second sleeve body, and the other end of the resistor is connected with the rear end electrode through welding.

By adopting the technical scheme, the first sleeve body of the front-end electrode is inserted and fixed in the insulating sleeve body, the second sleeve body is electrically connected with the resistor, and the first sleeve body and the insulating sleeve body are inserted and fixed, so that the disassembly and assembly of the resistor are realized, the structure is simple, and the processing and production are convenient; the second cover body is used for being connected in series with the resistor on the one hand, and on the other hand still is used for injecing the radial displacement second cover body of resistance, and it has realized the series relation of front end electrode and resistance, and the resistance other end is fixed with rear end electrode welded for a resistance is connected in series between the front end electrode of female positive electrode and the rear end electrode, is used for preventing public female connecting piece from producing the emergence of spark phenomenon at the grafting in-process.

Furthermore, the longitudinal section of the connecting part is of a U-shaped structure, two side walls of the connecting part are respectively connected with the first sleeve body and the second sleeve body, so that the first sleeve body and the second sleeve body are connected into a whole, the top wall of the connecting part is a positioning part, and the front end electrode is arranged in the insulating sleeve body and the female shell and can not move and be positioned when being pressed.

Through adopting above-mentioned technical scheme, realized establishing ties between front end electrode and the resistance to under the effect of U type connecting portion, can realize its and the insulation cover body between the location.

Furthermore, a first elastic opening is formed in the first sleeve body, and a second elastic opening is formed in the second sleeve body.

Through adopting above-mentioned technical scheme, elasticity open-ended setting makes between front end electrode and the public positive electrode, the second cover body and the resistance be connected more firm, and difficult not hard up has made things convenient for the integrated into one piece manufacturing of first cover body and second cover body simultaneously.

Furthermore, an elastic contact block used for being connected with the resistor is arranged in the second sleeve body.

Through adopting above-mentioned technical scheme, the setting up of elastic contact piece is used for realizing the electric connection between front end electrode and the resistance on the one hand, and on the other hand can inject the longitudinal displacement of resistance, reduces the emergence that the resistance rocked the phenomenon of opening circuit that causes.

Further, be provided with the installation department with female positive electrode matched with in the electrode shell, the installation department be one end closed, other end open-ended cavity body, be equipped with one on the closed end wall and cooperate the jack of pegging graft mutually with public positive electrode, the insulating sleeve body outer wall is provided with the slide, the internal bead with slide complex that is provided with of installation department cavity.

Through adopting above-mentioned technical scheme, made things convenient for the installation of female positive electrode, earlier with the female positive electrode mount pad that has the insulation support body in the installation department during the installation, then with the one end at motor casing cavity body place of back shroud lock joint, realize spacing to female positive electrode.

Further, the resistance has a value of 1-50 Ω.

By adopting the technical scheme, the resistors with different resistance values can be selected and matched according to actual requirements so as to be matched with various high-power electrical appliances or other devices.

Further, the male negative electrode, the female negative electrode and the male positive electrode are all arranged in a detachable structure.

By adopting the technical scheme, the split prefabrication of the electric connecting piece is facilitated, and the production and the manufacturing are facilitated.

Further, public casing includes casing and lower casing and the joint is fixed at the outside U type card frame of last casing, and public positive, the spacing grafting of negative electrode is on casing top down, goes up the casing and cup joints casing outside down, goes up casing and casing down and goes up relative both sides and be provided with a through-hole respectively, and two inner walls that U type card frame is relative are provided with respectively with the spacing post of through-hole matched with.

In conclusion, the beneficial technical effects of the invention are as follows:

1. when the plug is used on a high-power electric appliance, when the male plug and the female plug are plugged, the electrodes in the male plug and the female plug in the plug connector are in direct contact, and because the resistance is arranged, sparks are not easily generated instantly when the two electrodes are plugged;

2. because the electrode shell is internally provided with the mounting part, the bottom of the motor shell is buckled with the rear cover plate, so that the female and positive electrode assembly is integrally and detachably connected in the female plug; meanwhile, the resistor is fixed on the outer side of the insulating sleeve body of the female positive electrode, so that the replaceable female positive electrode or the replaceable resistor can be continuously used after the resistor is damaged, and the use cost is reduced;

3. the front-end electrode is fixedly spliced with the insulating sleeve body through the first sleeve body, and is electrically connected with the resistor through the second sleeve body, so that stable electrical connection between the first sleeve body and the common positive electrode and between the second sleeve body and the resistor can be realized, the disassembly of the front-end electrode is realized, and the installation of the resistor is facilitated; when the front electrode is damaged, the front electrode can be replaced; meanwhile, the resistor is convenient to maintain and replace, and the maintenance cost of the electric connecting piece is further saved;

4. in production, as long as resistors with different resistance values are arranged between the first electric conductor and the second electric conductor, various types of spark-proof electric connectors can be obtained, and the product has good universality;

5. compared with the traditional electric connector, the male positive and negative electrodes and the female positive and negative electrodes are not detachable, so that the production and assembly are inconvenient, the production efficiency is low, and the later maintenance cost is high; the spark-proof electric connector's of this patent public positive negative electrode and female positive and negative electrode all set up to detachable structure, can prefabricate respectively in production, then assemble to can accelerate production efficiency, and spare parts such as the public positive negative electrode that the change maintenance that can be directed against corresponds in later maintenance and female positive and negative electrode or resistance have reduced electric connector's maintenance cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram for showing the connection relationship between the male plug and the female plug according to the present invention.

Fig. 3 is a schematic sectional view of the female plug of the present invention.

Fig. 4 is an exploded view of the connection of the back cover plate and the motor casing according to the present invention.

Fig. 5 is an exploded structural schematic view of the parent positive electrode of the present invention.

Fig. 6 is an exploded view of the male plug of the present invention.

In the figure, 1, a male plug; 11. a male housing; 111. an upper housing; 112. a lower housing; 113. a U-shaped clamping frame; 114. a through hole; 115. a limiting column; 116. a ring groove; 2. a female plug; 21. a female housing; 211. an electrode case; 2111. an installation part; 2112. a closed end wall; 2113. a jack; 212. a rear cover plate; 3. a positive electrode; 4. a positive electrode and a negative electrode; 5. a male signal connector; 6. a female positive electrode; 61. a front-end electrode; 611. a first sleeve body; 6111. a first elastic opening; 612. a second sleeve body; 6121. a second elastic opening; 6122. an elastic contact block; 613. a connecting portion; 6131. a side wall; 6132. a top wall; 62. a rear end electrode; 63. an insulating sheath body; 631. mounting holes; 632. inserting grooves; 633. a slideway; 64. a resistance; 7. a female negative electrode; 8. and a female signal connector.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Referring to fig. 1 and 2, the spark-proof electrical connector with a detachable resistor sleeve disclosed by the invention comprises a male plug 1 and a female plug 2 which are matched with each other, wherein the male plug 1 is provided with a male positive electrode (3), a female negative electrode (3, 4) and a male signal connector 5, and the female plug 2 is internally provided with a female positive electrode (6, 7) and a female signal connector 8 (see fig. 3) which are connected with the male plug 1 in an inserting way and are respectively fixed in a male shell (11) and a female shell (21).

Referring to fig. 3 and 4, the female housing 21 includes an electrode case 211 and a rear cover 212 fittingly fastened to the electrode case 211. The female electrode 6 is designed as a detachable sleeve body, the electrode shell 211 is provided with an installation part 2111 matched with the female electrode 6, the installation part 2111 is a cavity body with one closed end and the other open end, and the closed end wall 2112 is provided with an insertion hole 2113 matched and inserted with the male electrode 3 (see fig. 2).

Referring to fig. 3 and 4, the female positive electrode 6 is composed of a front electrode 61, a rear electrode 62, an insulating sheath 63 and a 1-50 Ω resistor 64, which are not connected, and inserted into the electrode case 211. The structure is as follows: the front electrode 61 is inserted into the front end of the insulating sleeve 63, the rear electrode 62 is fixed in the insulating sleeve 63 by injection molding, and the front electrode 61 and the rear electrode 62 mounted in the insulating sleeve 63 have a gap and are not in contact with each other. The resistor 64 is fixed outside the insulating sleeve body 63, one end of the front electrode 61 is inserted and fixed in the insulating sleeve body 63, the other end extends out of the insulating sleeve body 63 and is connected with the resistor 64, and two ends of the resistor 64 are respectively connected with the front electrode 61 and the rear electrode 62 in series. When the front end electrode 61 and the resistor 64 are damaged, the female positive electrode 6 can be removed from the electrode shell and replaced with a new female positive electrode 6 or a single component.

In order to realize the replacement of the resistor 64, the resistor 64 is detachably connected outside the insulating sleeve body 63, and the female positive electrode 6 with the insulating sleeve body 63 is detachably connected in the female shell body 21, so that when the resistor 64 is damaged or the resistor 64 with different resistance values needs to be replaced, various types of spark-proof electric connectors can be obtained by detaching the female positive electrode 6 and then replacing the required resistor 64.

The outer wall of the insulating sleeve 63 is provided with a slideway 633, and a convex rib (not shown in the figure) matched with the slideway 633 is arranged in the cavity of the mounting part 2111. When the motor is installed, the female positive electrode 6 is inserted into the installation part 2111, the horizontal displacement of the female positive electrode 6 is reduced under the matching action of the convex ribs and the slide rails 633, and then the rear cover plate 212 is buckled at one end of the opening of the motor casing cavity body and used for limiting the longitudinal displacement of the female positive electrode 6, so that the female positive electrode 6 is limited to be installed in the electrode casing 211.

Referring to fig. 5, the insulating sheath 63 has the following structure: the inner cavity of the resistor is provided with a mounting hole 631 for mounting the front electrode 61, the front end wall of the resistor is provided with a plug-in groove 632 for mounting the front electrode 61, and the outer side of the resistor is provided with the resistor 64. The front electrode 61 is a movable connector which is provided with a first sleeve 611 in inserting fit with the male electrode and a second sleeve 612 in inserting fit with the resistor 64, the first sleeve 611 is provided with a first elastic opening 6111, and the second sleeve 612 is provided with a second elastic opening 6121; a connecting part 613 is arranged between the first sleeve body 611 and the second sleeve body 612, two sides of the connecting part 613 are connected with the insertion groove 632 in a matching manner, one end of the resistor 64 is inserted into the second sleeve body 612, and the other end is connected with the rear electrode 62 by welding. The connecting portion 613 has a U-shaped longitudinal cross section, two side walls 6131 of the connecting portion are respectively connected to the first sleeve 611 and the second sleeve 612, so that the first sleeve 611 and the second sleeve 612 are connected together, and a top wall 6132 of the connecting portion 613 is a positioning portion, so that the front electrode 61 is mounted in the insulating sleeve 63 and the female housing 21, and is immovable and positioned when pressed.

A resilient contact block 6122 is provided within the second sleeve 612 for connection to the resistor 64. The elastic contact block 6122 is used to electrically connect the front electrode 61 and the resistor 64, and limit the longitudinal displacement of the resistor 64, thereby reducing the occurrence of circuit breaking caused by the shaking of the resistor 64.

The front electrode 61 is connected with the resistor 64 through the second sleeve body 612 in the insulating sleeve body 63 fixed by the first sleeve body 611 in an inserting manner, so that the front electrode 61 can be disassembled, the front electrode 61 can be conveniently disassembled and maintained, and the front electrode 61 can be replaced when the front electrode 61 is damaged.

Referring to fig. 6, to achieve the overall detachability of the electrical connector, the male and female negative electrodes (3, 4) and 7 may also be provided in a detachable configuration. The male housing 11 includes an upper housing 111 and a lower housing 112, the male positive electrode and the negative electrode are inserted in the top of the lower housing 112 in a limited manner, the upper housing 111 is sleeved outside the lower housing 112, two opposite sides of the upper housing 111 and the lower housing 112 are respectively provided with a through hole 114, the outer wall of the upper housing 111 is provided with a U-shaped clamping frame 113, and two opposite inner walls of the U-shaped clamping frame 113 are respectively provided with a limiting column 115 matched with the round hole. During installation, the positive electrode and the negative electrode are inserted at the top end of the lower shell 112, then the lower shell 112 with the positive electrode and the negative electrode is sleeved in the upper shell 111, at the moment, the round holes of the upper shell 111 and the lower shell 112 correspond to each other one by one, then the U-shaped clamping frame 113 is installed on the upper shell 111, and the two limiting columns 115 respectively penetrate through the through holes 114 of the upper shell 111 and are embedded in the through holes 114 corresponding to the lower shell 112, so that the upper shell and the lower shell are fixed. Preferably, in order to achieve a stable connection between the upper casing and the lower casing, a protruding ring (not shown) is disposed inside the upper casing 111, and an annular groove 116 is disposed on the outer wall of the lower casing 112, wherein the protruding ring is inserted into the annular groove 116 when the upper casing and the lower casing are engaged with each other. The mode realizes the split prefabrication of the electric plug, improves the production efficiency of the electric connecting piece, is inconvenient for disassembly and assembly maintenance in use, prolongs the service life of the electric connecting piece and saves the cost.

In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a spark-proof electric connector with detachable resistance cover body, is including male plug (1) and female plug (2) of mutually supporting, its characterized in that: a male positive electrode (3) and a female negative electrode (3, 4) are arranged in the male plug (1), a female positive electrode (6) and a female negative electrode (7) which are connected with the male plug (1) in an inserting way are arranged in the female plug (2), and the male positive electrode and the female negative electrode are respectively fixed in a male shell (11) and a female shell (21);

the female shell (21) comprises an electrode shell (211) and a rear cover plate (212) which is matched and buckled with the electrode shell (211);

female positive electrode (6) design is the removable cover body, by disconnected front end electrode (61), rear end electrode (62), insulating cover body (63) and resistance (64) constitute, pegs graft in electrode shell (211), and its structure is: the front end electrode (61) is inserted into the front end of the insulating sleeve body (63), the rear end electrode (62) is fixed in the insulating sleeve body (63) in an injection molding mode, and a gap is formed between the front end electrode (61) and the rear end electrode (62) which are installed in the insulating sleeve body (63) and are not in contact with each other;

the resistor (64) is arranged on the outer side of the insulating sleeve body (63), and two ends of the resistor (64) are respectively connected with the front end electrode (61) and the rear end electrode (62) in series;

one end of the front electrode (61) is inserted and fixed in the insulating sleeve body (63), and the other end of the front electrode extends out of the insulating sleeve body (63) and is connected with the resistor (64).

2. The spark-proof electrical connector provided with a removable resistance cover according to claim 1, wherein: the structure of the insulating sleeve body (63) is as follows: the inner cavity of the resistor is provided with a mounting hole (631) of the front electrode (61), the front end wall of the resistor is provided with an inserting groove (632) for mounting the front electrode (62), and the outer side of the resistor is provided with a resistor (64);

the front electrode (61) is a movable connecting piece which is composed of a first sleeve body (611) which is in inserted fit with the positive electrode (3) and a second sleeve body (612) which is in inserted fit with the resistor (64), and a connecting part (613) is arranged between the first sleeve body (611) and the second sleeve body (612);

two sides of the connecting part (613) are connected with the inserting groove (632) in a matching way;

one end of the resistor (64) is inserted in the second sleeve body (612), and the other end of the resistor is connected with the rear end electrode (62) through welding.

3. The spark-proof electrical connector provided with a removable resistance cover according to claim 2, wherein: the longitudinal section of the connecting part (613) is of a U-shaped structure, two side walls (6131) of the connecting part are respectively connected with the first sleeve body (611) and the second sleeve body (612), so that the first sleeve body (611) and the second sleeve body (612) are connected into a whole, the top wall (6132) of the connecting part (613) is a positioning part, and the front end electrode (61) is installed in the insulating sleeve body (63) and the female shell (21) and does not move and is positioned when being pressed.

4. The spark-proof electrical connector provided with a removable resistance cover according to claim 3, wherein: the first sleeve body (611) is provided with a first elastic opening (6111), and the second sleeve body (612) is provided with a second elastic opening (6121).

5. The spark-proof electrical connector provided with a removable resistance cover according to claim 3, wherein: an elastic contact block (6122) used for being connected with the resistor (64) is arranged in the second sleeve body (612).

6. The fireproofed electrical connector provided with the removable resistance cover according to any one of claims 1 to 5, wherein: an installation part (2111) matched with the female electrode and the positive electrode (6) is arranged in the electrode shell (211), the installation part (2111) is a cavity body with one closed end and the other open end, and an insertion hole (2113) matched and inserted with the male electrode and the positive electrode (3) is formed in the closed end wall (2112);

the insulating sleeve body (63) outer wall is provided with slide (633), installation department (2111) cavity is internal to be provided with slide (633) complex bead.

7. The spark-proof electrical connector provided with a removable electrical resistance cover according to claim 6, wherein: the resistor (64) has a value of 1-50 omega.

8. The spark-proof electrical connector provided with a removable resistance cover according to claim 1, wherein: the positive electrode, the negative electrode (3, 4) and the female negative electrode (7) are all arranged in a detachable structure.

9. The spark-proof electrical connector provided with a removable resistance cover according to claim 1, wherein: male housing (11) includes casing (111) and casing (112) down and the joint is fixed at the outside U type card frame (113) of last casing (111), just, the spacing grafting of negative electrode (3, 4) is on casing (112) top down, it cup joints casing (112) outside down to go up casing (111), it is provided with a through-hole (114) respectively to go up casing (111) and casing (112) relative both sides down, two inner walls that U type card frame (113) is relative are provided with respectively with through-hole (114) matched with spacing post (115).