CN218828315U - DC interface male-female converter - Google Patents

Abstract

The utility model discloses a public female converter of DC interface relates to in electronic equipment technical field. The DC interface male-female converter comprises a rubber core, a connecting sleeve and a machine needle; the rubber core is provided with a first channel, and two ends of the first channel respectively extend to two end parts of the rubber core and respectively form a first inserting port and a first communicating port; the connecting sleeve is provided with a second channel and a splicing space, one end of the second channel, which is far away from the first connecting port, is communicated with the splicing space, and one end of the splicing space, which is far away from the second channel, extends to the other end of the connecting sleeve and forms a second splicing port; the car needle sets up in first passageway including the main part and the grafting structure that integrated into one piece set up, and the one end of main part is provided with the inserting groove, inserting groove and first interface intercommunication, and the grafting structure sets up in the main part and keeps away from the one end that is provided with the inserting groove, and extends to in the grafting space. The DC interface male-female converter has high overcurrent capacity, and can ensure the working stability so as to ensure the test effect.

Description

DC interface male-female converter

Technical Field

The utility model relates to an in electronic equipment technical field, in particular to public female converter of DC interface.

Background

With the rapid development of modern society electronic science and technology, functions of electronic equipment are more and more modularized and diversified, a DC (Direct Current) power interface is widely applied to different fields, in the actual use process, in order to perform connectivity test on a connector adopting the DC power interface, the DC power interface of the connector needs to be repeatedly subjected to disconnection operation and connection operation, and due to the fact that the connector has the difference between a male connector and a female connector, a DC power male-female conversion test head is often required to be used for male-female conversion according to actual conditions, a male end and a female end of the DC power male-female conversion test head are usually electrically connected in a mutual contact mode or a wire connection mode, the connector and the test equipment can be respectively plugged at the male end and the female end, however, the male end and the female end connected through wires are limited by the wires and are usually weak in overcurrent capacity, and in the repeated plugging process, the mutual contact between the male end and the female end is easy to loose in structure, so that poor contact occurs, and the test effect is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a DC interface male and female converter, its overcurrent capacity is higher, can guarantee the stability of work to guarantee its test effect.

According to the utility model discloses DC interface male and female converter, include: the rubber core is provided with a first channel, and two ends of the first channel respectively extend to two ends of the rubber core and respectively form a first inserting port and a first communicating port; the connecting sleeve is provided with a second channel and an inserting space, one end of the second channel extends to one end part of the connecting sleeve and forms a second communicating port, one end, far away from the first communicating port, of the second channel is communicated with the inserting space, one end, far away from the second channel, of the inserting space extends to the other end part of the connecting sleeve and forms a second inserting port, the connecting sleeve is sleeved on the rubber core through the second channel, and the first channel is communicated with the inserting space through the first communicating port; the vehicle needle comprises a main body and an inserting structure which are integrally formed, wherein the main body is arranged in the first channel, an inserting groove is formed in one end of the main body and communicated with the first inserting port, and the inserting structure is arranged at one end, far away from the main body, of the inserting groove and extends into the inserting space.

According to the utility model discloses a public female converter of DC interface has following beneficial effect at least: the end, provided with the insertion groove, of the main body of the needle is a male end, the insertion groove is communicated with the first insertion port, a female head of an external device can be inserted into the insertion groove of the needle from the first insertion port of the rubber core to be in contact with the main body, one end, provided with the insertion structure, of the main body is a female end, and a male head of the external device can be inserted into the insertion space from the second insertion port of the connecting sleeve and is in contact with the insertion structure located in the insertion space, so that male-female conversion of the DC interface can be achieved by the DC interface male-female converter; wherein, main part and grafting structure integrated into one piece set up, the public end and the female mode that pass through electric wire connection of conversion test head in traditional DC power are compared, the part diameter that the main part is connected with the grafting structure is great, in order to reduce the internal resistance of this eedle, make blockking of this eedle lower, can improve the public female converter of this DC interface overcurrent capacity, and, main part and grafting structure integrated into one piece set up the stability that can make interconnect higher, and can avoid this public female converter of DC interface to appear becoming flexible between the in-process main part of repeated grafting and the grafting structure, in order to avoid main part and grafting structure to appear contacting badly, guarantee the stability of the public female converter work of this DC interface, in order to guarantee its test effect.

According to some embodiments of the utility model, still including first hat spring and second hat spring, first hat spring set up in the inserting groove, the second hat spring sets up in the grafting space.

According to the utility model discloses a some embodiments, the internal face of first interface is provided with first direction inclined plane.

According to some embodiments of the present invention, a mounting member is further included; a first connecting hole is arranged on the side wall of the first channel in a penetrating manner, a second connecting hole is arranged on the side wall of the second channel in a penetrating manner, and the first connecting hole is communicated with the second connecting hole; the mounting part is injection-molded on the connecting sleeve, and the mounting part is partially penetrated through the first connecting hole and the second connecting hole and is connected with the connecting sleeve, the rubber core and the vehicle needle.

According to some embodiments of the utility model, be provided with first holding tank on the lateral wall of main part, first holding tank with first connecting hole intercommunication.

According to some embodiments of the utility model, first connecting hole is provided with a plurality ofly, first holding tank encircles the lateral wall setting of car needle, and with a plurality of first connecting hole intercommunication.

According to some embodiments of the utility model, be provided with the second holding tank on the inner wall of second passageway, the second holding tank with the second connecting hole intercommunication.

According to the utility model discloses a some embodiments, the second connecting hole is provided with a plurality ofly, the second holding tank encircles the inner wall setting of second passageway, and with a plurality of the second connecting hole intercommunication.

According to the utility model discloses a some embodiments, be provided with the third holding tank on the lateral wall of adapter sleeve.

According to the utility model discloses a some embodiments, the third holding tank is provided with a plurality ofly and encircles the lateral wall setting of adapter sleeve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a DC interface male-female converter according to the present invention;

fig. 2 is a cross-sectional view of the DC interface male-female converter of fig. 1;

fig. 3 is a schematic structural diagram of a rubber core of the DC interface male-female converter according to the present invention;

fig. 4 is a cross-sectional view of a rubber core of the DC interface male-female converter of fig. 3;

fig. 5 is a schematic structural diagram of the connection sleeve of the DC interface male-female converter according to the present invention;

fig. 6 is a sectional view of a connection sleeve of the DC interface male-female converter of fig. 5;

fig. 7 is a schematic structural diagram of a needle of the DC interface male-female converter according to the present invention;

fig. 8 is a cross-sectional view of a needle of the DC interface male-female converter of fig. 7.

Reference numerals:

a rubber core 100; a first channel 110; a first connection hole 111; a first interface 120; a first communication port 130; a first guide slope 140; a connecting sleeve 200; a second channel 210; the second connection hole 211; the second receiving groove 212; an insertion space 220; a second interface 230; the second communication port 240; the third receiving groove 250; a second guide slope 260; a needle 300; a main body 310; a plug-in slot 311; the first receiving groove 312; a plug-in structure 320; a mounting member 400; a first crown spring 500; second crown spring 600.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated in relation to the orientation description, such as up, down, left, right, front, rear, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

A DC interface male-female converter according to an embodiment of the present invention is described below with reference to fig. 1 to 8.

According to the embodiment of the present invention, the DC interface male-female converter comprises a rubber core 100, a connecting sleeve 200 and a needle 300; the rubber core 100 is provided with a first channel 110, two ends of the first channel 110 respectively extend to two ends of the rubber core 100 and respectively form a first inserting port 120 and a first communicating port 130; the connecting sleeve 200 is provided with a second channel 210 and an inserting space 220, one end of the second channel 210 extends to one end of the connecting sleeve 200 and forms a second communicating port 240, one end of the second channel 210, which is far away from the first communicating port 130, is communicated with the inserting space 220, one end of the inserting space 220, which is far away from the second channel 210, extends to the other end of the connecting sleeve 200 and forms a second inserting port 230, the connecting sleeve 200 is sleeved on the rubber core 100 through the second channel 210, and the first channel 110 is communicated with the inserting space 220 through the first communicating port 130; the needle 300 includes a main body 310 and an insertion structure 320 integrally formed, the main body 310 is disposed in the first channel 110, an insertion groove 311 is disposed at one end of the main body 310, the insertion groove 311 is communicated with the first insertion port 120, and the insertion structure 320 is disposed at an end of the main body 310 away from the insertion groove 311 and extends into the insertion space 220.

One end of the main body 310 of the needle 300, which is provided with the insertion groove 311, is a male end, the insertion groove 311 is communicated with the first insertion port 120, the female head of the external device can be inserted into the insertion groove 311 of the needle 300 from the first insertion port 120 of the rubber core 100 to be in contact with the main body 310, one end of the main body 310, which is provided with the insertion structure 320, is a female end, the male head of the external device can be inserted into the insertion space 220 from the second insertion port 230 of the connecting sleeve 200 and is in contact with the insertion structure 320 located in the insertion space 220, so that the DC interface male-female converter can realize male-female conversion; wherein, main part 310 and grafting structure 320 integrated into one piece set up, compare in the mode that traditional DC power supply male-female conversion test head's public end and female end pass through the connection of electric lines, the part diameter that main part 310 is connected with grafting structure 320 is great, in order to reduce the internal resistance of this eedle 300, make this eedle 300 block lower, can improve this DC interface male-female converter overcurrent capacity, and, main part 310 and grafting structure 320 integrated into one piece set up can make interconnect's stability higher, and can avoid this DC interface male-female converter to appear becoming flexible between repeated in-process main part 310 of pegging graft and grafting structure 320, in order to avoid main part 310 and grafting structure 320 to appear contacting badly, guarantee the stability of this DC interface male-female converter work, in order to guarantee its test effect.

Specifically, the needle 300 integrally forms the main body 310 and the insertion structure 320, so that the production cost can be reduced.

Specifically, compare in the mode that the public end and the female end of traditional DC power supply male-female conversion test head pass through connection of electric lines, it needs to carry out the secondary switching between public end and female end, in the utility model discloses the scheme, because the one end that main part 310 of needle 300 was provided with inserting groove 311 is public end, is public head, and the one end that needle 300 has inserting structure 320 is female end, is female head, and needle 300 can pass through integral type injection moulding, makes this needle 300 need not public end and female end between the secondary switching, in order to strengthen this needle 300's overcurrent capacity, and can make this needle 300 overall structure intensity higher, more real durable; the needles 300 may be formed by solidifying a liquid conductive metal material.

Referring to fig. 2, it can be understood that a first crown spring 500 and a second crown spring 600 are further included, the first crown spring 500 is disposed in the insertion slot 311 such that the female terminal of the external device is inserted into the insertion slot 311 and can be in contact with the first crown spring 500, the area of contact with the female terminal of the external device can be increased by disposing the first crown spring 500, and the stability of the insertion of the female terminal of the external device into the insertion slot 311 can be improved by the first crown spring 500; second crown spring 600 is disposed in insertion space 220 such that the male terminal of the external device is inserted into insertion space 220 and can be in contact with second crown spring 600, the area of contact with the male terminal of the external device can be increased by disposing second crown spring 600, and second crown spring 600 can improve the stability of insertion of the male terminal of the external device into insertion space 220.

Specifically, a first clamping groove which is annularly arranged is formed in the inner wall of the insertion groove 311, the first crown spring 500 is clamped in the first clamping groove, and two ends of the first crown spring 500 are respectively abutted against the inner wall of the first clamping groove and the inner wall of the first channel 110, so that the stability of the first crown spring 500 in the insertion groove 311 is improved; a second clamping groove which is annularly arranged is formed in the inner wall of the inserting space 220, the second crown spring 600 is clamped in the second clamping groove, and two ends of the second crown spring 600 are abutted against the inner wall of the second clamping groove, so that the stability of the first crown spring 500 in the inserting space 220 is improved; wherein, the first crown spring 500 and the second crown spring 600 are both ring-shaped sheet structures with elasticity.

Specifically, an annular boss structure is provided at an end of the glue core 100 close to the first insertion port 120, and the glue core 100 can be inserted into the second channel 210 from the second communication port 240 of the connection sleeve 200, so that the end of the connection sleeve 200 provided with the second communication port 240 abuts against the annular boss structure to define a position between the connection sleeve 200 and the glue core 100; the end of the needle 300 provided with the insertion groove 311 is inserted into the first passage 110 from the first communication port 130 of the rubber core 100, and abuts against the inner wall of the end of the first passage 110, so that the needle 300 and the rubber core 100 are positioned therebetween.

Referring to fig. 1, 3 and 4, it can be understood that, in the process of inserting the female connector of the external device into the insertion slot 311, the female connector is easily contacted and collided with the end of the rubber core 100, the inner wall surface of the first insertion port 120 is provided with the first guide inclined surface 140, and the first guide inclined surface 140 is annularly arranged, so that when the female connector of the external device collides with the first guide inclined surface 140, the female connector can slide into the insertion slot 311 along the first guide inclined surface 140, so as to reduce the difficulty of inserting the female connector into the insertion slot 311, and reduce the damage caused by the collision of the female connector and the rubber core 100.

Specifically, the end of the rubber core 100 provided with the first inserting port 120 is a plastic head structure, so as to reduce the damage to the female head of the external device and the plastic head structure caused by accidental collision during inserting, and reduce the difficulty of inserting.

Referring to fig. 1, 5 and 6, specifically, in the plugging process of inserting the male head of the external device into the plugging space 220, the male head is easily contacted and collided with the end of the connection sleeve 200, a second guide inclined surface 260 is provided on the inner wall surface of the second plugging port 230, and the second guide inclined surface 260 is annularly provided, so that when the male head of the external device collides with the second guide inclined surface 260, the male head can slide into the plugging space 220 along the second guide inclined surface 260, so as to reduce the difficulty of inserting the male head into the plugging space 220, and reduce the damage to the male head due to collision with the connection sleeve 200.

Referring to fig. 2 to 6, it can be understood that a mount 400 is further included; a first connection hole 111 is arranged on the side wall of the first channel 110 in a penetrating manner, a second connection hole 211 is arranged on the side wall of the second channel 210 in a penetrating manner, and the first connection hole 111 is communicated with the second connection hole 211; the mounting member 400 is injection molded on the connection sleeve 200, and the mounting member 400 is partially inserted into the first connection hole 111 and the second connection hole 211 and connected to the connection sleeve 200, the rubber core 100 and the needle 300.

The connection sleeve 200 can be formed in the connection sleeve 200 by injection molding, and in the process of injection molding of the connection sleeve 200, the first connection hole 111 is penetratingly formed on the rubber core 100, the second connection hole 211 is penetratingly formed on the protection sleeve, and the first connection hole 111 and the second connection hole 211 are formed so as to enable the installation member 400 to be sleeved with the connection sleeve 200, so that a liquid material constituting the installation member 400 can enter the first connection hole 111 and the second connection hole 211 and be in contact with the rubber core 100, the connection sleeve 200 and the needle 300, and a part of the liquid material is molded at the first connection hole 111 and the second connection hole 211, so that the part of the installation member 400 located in the first connection hole 111 and the second connection hole 211 can be clamped at the first connection hole 111 and the second connection hole 211 and connect the rubber core 100, the connection sleeve 200 and the needle 300, and the installation member 400 through injection molding can connect the rubber core 100, the connection sleeve 200 and the needle 300 relatively easily, and has high connection stability, thereby reducing the possibility of looseness of the DC interface female converter in the process of repeated plugging, ensuring the normal operation of the DC interface female converter, and ensuring the test effect.

Wherein, the rubber core and the mounting piece are both made of special wear-resistant high-elasticity materials, the service life can reach more than fifteen thousands of times, and the waste of working hours caused by frequent replacement can be avoided.

Referring to fig. 7 and 8, it can be understood that the first receiving groove 312 is provided on the outer sidewall of the main body 310, and the first receiving groove 312 communicates with the first connection hole 111.

The first receiving groove 312 is formed between the inner sidewall of the first channel 110 and the outer sidewall of the body 310, and the first receiving groove 312 can increase the contact area of the needle 300 with the liquid material constituting the mounting member 400 and can receive more liquid material, so that the stability of the connection of the mounting member 400 and the needle 300 can be further improved after the liquid material is solidified.

Referring to fig. 4, it can be understood that the first connection hole 111 is provided in plurality, and the first receiving groove 312 is provided around an outer sidewall of the needle 300 and communicates with the plurality of first connection holes 111.

The first receiving groove 312 is arranged in a surrounding manner, so that the inner wall area of the first receiving groove 312 can be increased, and the volume of the liquid material which forms the mounting piece 400 and can be received by the first receiving groove 312 can be further increased, so that the stability of the connection of the mounting piece 400 with the needle 300 and the rubber core 100 can be further improved; the passage of the liquid material constituting the mounting member 400 into the first accommodation groove 312 can be increased by providing the plurality of first connection holes 111, so as to accelerate the time for filling the first accommodation groove 312.

Referring to fig. 6, it can be understood that the second receiving groove 212 is provided on the inner wall of the second channel 210, and the second receiving groove 212 communicates with the second connection hole 211.

The second receiving groove 212 is located between the inner sidewall of the second channel 210 and the outer sidewall of the rubber core 100, and the second receiving groove 212 can increase the contact area of the connecting sleeve 200 and the liquid material constituting the mounting member 400, and can receive more liquid materials, so that the stability of the connection between the mounting member 400 and the connecting sleeve 200 can be further improved after the liquid materials are cured.

Referring to fig. 6, it can be understood that the second connection hole 211 is provided in plurality, and the second receiving groove 212 is provided around the inner wall of the second channel 210 and communicates with the plurality of second connection holes 211.

The second accommodating groove 212 is arranged in a surrounding manner, so that the inner wall area of the second accommodating groove 212 can be increased, and the volume of the liquid material which forms the mounting piece 400 and can be accommodated in the second accommodating groove 212 can be further increased, so that the stability of the connection of the connecting sleeve 200 with the mounting piece 400 and the rubber core 100 can be further improved; the passage of the liquid material constituting the mounting member 400 into the second receiving groove 212 can be increased by providing the plurality of second connection holes 211 to accelerate the filling time of the second receiving groove 212.

Referring to fig. 5, it can be understood that the third receiving groove 250 is provided on the outer sidewall of the connection sleeve 200, and the third receiving groove 250 can increase the contact area of the outer sidewall of the connection sleeve 200 and the liquid material constituting the mounting member 400, and can receive more liquid material, so that the stability of the connection between the mounting member 400 and the connection sleeve 200 can be further improved after the liquid material is solidified.

Referring to fig. 5, it can be understood that the third receiving groove 250 is provided in plurality and surrounds the outer sidewall of the connection sleeve 200.

The plurality of third receiving grooves 250 are formed in a surrounding manner, so that the inner wall area of the third receiving grooves 250 can be increased, the volume of the liquid material forming the mounting member 400 which can be received by the third receiving grooves 250 can be further increased, and the stability of the connection sleeve 200 and the mounting member 400 can be further improved.

Specifically, the self-adaptive assembly comprises a mounting seat, a floating block, a fixed seat, a limit screw and a buffer assembly.

The mounting member 400 is mounted on the mounting base by a positioning shaft pin and a mounting screw; the floating block is connected with the mounting seat through a limiting screw, mounting holes are formed in the floating block and the mounting seat, one end, provided with a screw head, of the limiting screw is connected with the mounting hole in the floating block, one end, provided with a thread, of the screw head of the limiting screw is in threaded connection with the mounting hole in the mounting seat, and it can be understood that the screw head of the limiting screw is not locked when in threaded connection with the mounting seat, so that the mounting seat can have a certain steering angle; a space is formed between the limit screw and the inner wall of the mounting hole of the floating block, so that the mounting seat can move relative to the floating block through the space and the limit screw; the buffer assembly is arranged between the fixed seat and the floating block.

When the DC interface male-female converter is plugged into external equipment, the mounting seat can move relative to the floating block through the spacing and the limiting screws, so that the mounting seat has a floating effect, and the service life of the mounting structure of the testing head is prolonged; specifically, when the mounting seat is stressed, the mounting seat can swing in a certain direction at intervals to form a floating effect, so that when the test head is plugged with external equipment, a certain buffering effect is achieved, the test head mounting structure is protected, the service life of the test head mounting structure is prolonged, and meanwhile, the test head and an electrical appliance interface can be protected; the buffer assembly can buffer the collision between the fixing seat and the floating block so as to reduce the damage of the fixing seat and the floating block caused by the collision.

In the description herein, references to the description of the term "one embodiment," "some embodiments," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A dc interface converter, comprising:

   the rubber core is provided with a first channel, and two ends of the first channel respectively extend to two ends of the rubber core and respectively form a first inserting port and a first communicating port;

   the connecting sleeve is provided with a second channel and a splicing space, one end of the second channel extends to one end part of the connecting sleeve and forms a second communicating port, one end of the second channel, far away from the first communicating port, is communicated with the splicing space, one end of the splicing space, far away from the second channel, extends to the other end part of the connecting sleeve and forms a second splicing port, the connecting sleeve is sleeved on the rubber core through the second channel, and the first channel is communicated with the splicing space through the first communicating port;

   the vehicle needle comprises a main body and an inserting structure, wherein the main body and the inserting structure are integrally formed, the main body is arranged in the first channel, an inserting groove is formed in one end of the main body, the inserting groove is communicated with the first inserting port, and the inserting structure is arranged at one end, far away from the main body, of the inserting groove and extends into the inserting space.
2. 2. The DC interface male-female converter according to claim 1, further comprising a first crown spring and a second crown spring, wherein the first crown spring is disposed in the insertion slot, and the second crown spring is disposed in the insertion space.
3. 3. The DC interface pin-box converter of claim 1, wherein an inner wall surface of the first socket is provided with a first guiding inclined surface.
4. 4. The DC interface male-female converter according to claim 1, further comprising a mounting member; a first connecting hole is arranged on the side wall of the first channel in a penetrating manner, a second connecting hole is arranged on the side wall of the second channel in a penetrating manner, and the first connecting hole is communicated with the second connecting hole; the mounting part is injection-molded on the connecting sleeve, and the mounting part is partially penetrated through the first connecting hole and the second connecting hole and is connected with the connecting sleeve, the rubber core and the vehicle needle.
5. 5. The DC interface male-female converter according to claim 4, wherein a first receiving groove is provided on an outer side wall of the main body, and the first receiving groove is communicated with the first connection hole.
6. 6. The DC interface male-female converter according to claim 5, wherein said first connection hole is provided in plurality, and said first receiving groove is provided around an outer side wall of said needle and communicates with said plurality of first connection holes.
7. 7. The DC interface male-female converter according to claim 4, wherein a second receiving groove is provided on an inner wall of the second channel, and the second receiving groove communicates with the second connection hole.
8. 8. The DC interface male-female converter according to claim 7, wherein the second connection hole is provided in plurality, and the second receiving groove is provided around an inner wall of the second passage and communicates with the plurality of second connection holes.
9. 9. The DC interface male-female converter according to claim 1, wherein a third receiving groove is provided on an outer sidewall of the connecting sleeve.
10. 10. The DC interface male-female converter according to claim 9, wherein said third receiving groove is provided in plurality and disposed around an outer sidewall of said connecting sleeve.

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