CN218182607U - A connection structure of a small current connector - Google Patents

Abstract

The utility model discloses a connection structure of a small current connector, which comprises a fixed base, a first plug installed on the fixed base and a second plug plugged with the first plug, and the fixed base is provided with a first installation hole, the first plug includes a first housing that is snapped and fixed in the first installation hole by injection molding, a first cable with one end in the first housing, and an end that is crimped and connected to the first cable. Engaging with the first pin provided in the first housing; the second plug includes a second housing with one end inserted in the first mounting hole, a second cable with one end in the second housing, and crimping the end of the second cable and engaging the first jack terminal in the second housing, and inserting the jack terminal into the pin. The utility model firstly simplifies the installation process and installation structure of the first plug, secondly ensures the firmness and reliability between the first plug and the fixing seat, and also has the characteristics of simple structure, low cost and easy assembly.

Description

A connection structure of a small current connector

technical field

The utility model relates to the technical field of connectors, in particular to a connection structure of a small current connector.

Background technique

High-voltage and high-current connectors are important circuit components used in the power distribution unit (PDU, PowerDistributionUnit) of passenger electric vehicles, which have an important impact on the circuit performance of passenger electric vehicles.

Current-carrying connectors are usually connected to external cables through connecting terminals (such as power terminals and signal terminals, etc.) to achieve power supply; existing connectors are generally connected by two plugs that are inserted into each other. When a certain plug is fixed on an external fixing base and then installed on the corresponding external equipment, generally a slot or buckle is provided on the inner wall of the fixing base, and then a matching buckle is provided on the outer periphery of the corresponding plug or slots, so as to realize the assembly of the plug and the fixing seat; in this assembly structure, firstly, corresponding slots or buckles need to be provided on the fixing base and the plug, resulting in complex structure and inconvenient parts processing, and the assembly process is cumbersome and also It is more difficult. Second, the snap-fit structure is easily affected by external force and affects the firmness and reliability of the plug. In addition, the existing two plugs are basically just a simple plug-in structure. After plug-in, there is generally no locking structure. The reliability of the connection is low, and it is easy to be affected by the external force to affect the plug-in effect, which in turn affects its over-current performance and connectivity.

Utility model content

The utility model aims at the above-mentioned existing technical defects, and provides a connection structure of a small current connector. The first housing is fixed on the fixing seat by injection molding. First, the installation process and installation structure of the first plug are simplified. The second is to ensure the firmness and reliability between the first plug and the fixing seat, and it also has the characteristics of simple structure, low cost and easy assembly.

In order to solve the above technical problems, the utility model provides a connection structure of a small current connector, which includes a fixing base, a first plug installed on the fixing base and a second plug plugged with the first plug, the fixing base There are first installation holes through the front and back, and the first plug includes a first housing that is snapped and fixed in the first installation hole by injection molding, a first cable with one end in the first housing, and a crimping connector. It is arranged at the end of the first cable and engaged with the first pin arranged in the first housing; the second plug includes a second housing with one end inserted in the first installation hole, and one end arranged in the first mounting hole. The second cable in the second housing and the first jack terminal crimped on the end of the second cable and engaged in the second housing, and the jack terminal is inserted into the pin .

Further, the two side surfaces of the fixing base are protrudingly provided with a first boss and a second boss corresponding to the front and rear respectively, and the first mounting hole is provided front and rear through the middle of the first boss and the second boss, The first shell is engaged and fixedly connected with the first boss.

Further, the inner side end of the first housing is provided with a first insertion portion extending forward into the second boss, and one end of the first pin extends into the first insertion portion, One end of the second shell is inserted into the second boss and arranged around the first insertion part.

Further, a buckle with a right-angled cross-section is provided on the inner wall of the outer end of the first boss, and the outer circumference of the first housing is provided with a slot that matches the shape of the buckle and fits into it.

Further, the first plug also includes a first rubber core that is engaged in the first housing, and the first pin is engaged in the first rubber core; the first cable A first waterproof ring and a first tail buckle are sequentially arranged between the first housing and the first tail buckle, and the first tail buckle is fastened with the first housing.

Further, the first waterproof ring is provided with at least one introduction hole, and the inner surface of the first tail buckle is provided with a pressure column inserted into the introduction hole and pressed forward against the first rubber core. .

Further, the second plug also includes a second rubber core that is engaged in the second shell, the first socket terminal is engaged in the second rubber core, and the second rubber One end of the core is inserted into the first insertion part, so that the first socket terminal and the first pin are plugged in; the second cable and the second housing are sequentially provided with a second waterproof cable from the inside to the outside. ring and a second tail buckle, the second tail buckle is fastened with the second housing; a shielding ring is provided between the second cable and the second rubber core.

Further, a stop step is set on the inner wall of the outer end of the second boss, and the outer circumference of the second housing is radially provided with a first stop portion that cooperates with the stop step. The outer periphery of the second housing is further radially provided with a second stop portion abutting against the outer end surface of the second boss.

Further, the outer periphery of the second casing is recessed with an annular groove for installing a waterproof ring, and the waterproof ring abuts against the inner wall of the second boss.

Further, the second boss is also provided with buckles, and the second plug also includes a locking assembly arranged on the outside of the second housing and engaged with the buckles, and the second housing There is a mounting groove for installing the locking assembly; the locking assembly includes a lever arm that is rotated in the middle of the mounting groove and a sliding piece that is slid in the mounting groove. One end of the lever arm is provided with the The other end of the lever arm is inserted into the slider, and a spring is provided between the end of the lever arm and the slider, and the two sides of the slider respectively protrude A positioning part is provided, and a limit platform for supporting the positioning part is protruded on the inner wall of the end of the installation groove away from the buckle.

The utility model has the following beneficial effects:

1. The first housing is fixed on the fixing base by injection molding, so that other components of the first plug can be directly installed in the first housing in sequence. First, the installation process and structure of the first plug are simplified. Second, It ensures the firmness and reliability between the first plug and the fixing base, and also has the characteristics of simple structure, low cost and easy assembly.

2. The first plug realizes the fixation of the rubber core by tightening the first rubber core inward through the tail buckle, that is, there is no need to design a snap-fit structure between the first rubber core and the first shell, which simplifies the first The design of the shell and the first rubber core facilitates the injection molding of the first shell, and the overall assembly structure is simple and convenient.

3. The design of the first stop part and the second stop part on the second housing forms a double stop structure, which ensures that the second plug is inserted in place, and at the same time prevents it from excessively moving forward and squeezing the first plug.

4. There is a locking structure for locking the second plug between the second boss and the second plug, which improves the structural reliability of the first plug and the second plug after insertion, and avoids the influence of external force on the insertion. In addition, the locking or unlocking of the second plug is realized by the cooperation of the sliding part and the lever arm. The overall structure and operation process are simple; when locking, the sliding part is compressed to the end of the installation groove by a spring, and The positioning part and the limit platform in the installation groove cooperate up and down, so that the bayonet on the other end of the lever arm is stuck on the buckle; when unlocking, the sliding part needs to be pushed forward to make the positioning part break away from the limit platform forward, Then press down the sliding member to lift the other end of the lever arm, that is, the separation between the lever arm and the buckle realizes the unlocking of the second plug.

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

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model, constitute a part of the application, and do not constitute an improper limitation of the utility model. In the accompanying drawings:

Fig. 1 is the schematic diagram of small current connector in the embodiment;

Fig. 2 is the schematic diagram of the second casing in the embodiment;

Fig. 3 is the schematic diagram of locking assembly in the embodiment;

Fig. 4 is a sectional view along the Y direction of the small current connector in the embodiment;

Fig. 5 is the enlarged schematic view of A in Fig. 4;

Fig. 6 is the enlarged schematic view of B in Fig. 4;

Fig. 7 is a cross-sectional view along the X direction of the small current connector in the embodiment;

FIG. 8 is an enlarged schematic diagram of C in FIG. 7 .

detailed description

In order to fully understand the technical content of the utility model, the utility model will be further introduced and explained in conjunction with the accompanying drawings and specific embodiments below; , is used to distinguish different components, etc., and does not represent a sequence, nor does it limit that "first" and "second" are different types.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example: Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present utility model.

Example

As shown in Figures 1 to 8, the connection structure of a small current connector shown in this embodiment includes a fixing base 1, a first plug 100 installed on the fixing base 1 and a plug plugged with the first plug 100. The second plug 200 has a first mounting hole 10 through the front and back of the fixing seat 1. The first plug 100 includes a first housing 101 that is snapped and fixed in the first mounting hole 10 by injection molding. The first cable 102 in the housing 101 and the first pin 103 that is crimped on the end of the first cable 102 and engaged in the first housing 101; the second plug 200 includes one end inserted into the The second housing 201 in the first mounting hole 10, the second cable 202 with one end disposed in the second housing 201, and the end of the second cable 202 crimped and engaged with the second housing The first jack terminal 203 in 201, and the jack terminal is plugged with the pin; the fixing seat 1 is also provided with a buckle 300, and the second plug 200 also includes a buckle 300 arranged outside the second housing 201 Snap-fit locking assembly 400 .

In the above, the first housing is fixed on the fixing seat by injection molding, so that other components of the first plug can be directly installed in the first housing in sequence. First, the installation process and installation structure of the first plug are simplified. The second is to ensure the firmness and reliability between the first plug and the fixing seat, which also has the characteristics of simple structure, low cost and easy assembly; in addition, the locking of the second plug is realized through the buckle on the fixing seat, so that The insertion of the second plug and the first plug is good and is not affected by external force.

The specific locking structure is as follows: the first boss 301 and the second boss 302 corresponding to the front and back respectively protrude from the two sides of the fixed seat 1, and the first mounting hole 10 runs through the first boss 301 and the second boss 301. In the middle of the boss 302, the first shell 101 is engaged and fixedly connected with the first boss 301, and the buckle 300 is arranged on the outside of the second boss 302, and the second shell 201 is recessed with a hole for installing the locking assembly. Mounting groove 204; locking assembly 400 comprises the lever arm 401 that middle rotation is arranged in the front end of mounting groove 204 and the slider 402 that slides is arranged in the mounting groove 204, and the front end of lever arm 401 extends forward and is provided with buckle 300 buckles The other end of the lever arm 401 is inserted into the slider 402, that is, the slider 402 can slide forward and backward along the lever arm, and a spring 404 is provided between the end of the lever arm 401 and the slider 402, that is, the spring The function of the slider is located at the rear end of the installation groove, and the two sides of the slider 402 protrude respectively to be provided with a positioning part 405, and the end (ie the rear end of the installation groove) of the installation groove 204 away from the buckle 300 is raised on the inner wall. There is a limit table 406 for one-to-one symmetrical support of the positioning part 405; the use process of the locking assembly is as follows, when locking, the spring is used to compress the slider to the rear end of the installation groove, at this time the positioning part and the installation on the slider The limit platform in the groove cooperates up and down, so that the bayonet on the other end of the lever arm is stuck on the buckle; when unlocking, the sliding part needs to be pushed forward to make the positioning part move forward from the limit platform, and then go down The other end of the lever arm is lifted by pressing the sliding member, that is, the separation between the lever arm and the buckle realizes the unlocking of the second plug.

In this embodiment, a ring buckle 303 with a right-angled cross section is provided on the inner wall of the outer end of the first boss 301, and the outer periphery of the first housing 101 is provided with a card slot 104 that matches the shape of the ring buckle 303 and fits therein ( As shown in Figure 6), the socket connection method of this structure generally cannot be installed by parts assembly, so it is necessary to directly inject the first shell on the fixing seat by injection molding, and the first shell after the two are combined It cannot be disassembled, and the assembly structure is firm.

In this embodiment, the first plug 100 further includes a first rubber core 105 that is engaged in the first housing 101, and the first pin 103 is engaged in the first rubber core 105; the first cable 102 and Between the first housing 101, a first waterproof ring 106 and a first tail buckle 107 are sequentially arranged from the inside to the outside, and the first waterproof ring is used to seal the inside of the first housing, and the first tail buckle 107 and the first housing 101 fastening, the inner circumference of the tail buckle is tightly pressed against the outer circumference of the cable, so as to fix the cable and prevent the internal connection structure from being affected by the transverse tensile force of the cable; at least one The introduction hole 108, the inner surface of the first end buckle 107 is provided with a pressure column 109 inserted into the introduction hole 108 and pressed against the first rubber core 105 forward, and the glue is realized by pressing the first rubber core inwardly by the tail buckle. The fixing of the core, that is, there is no need to design a snap-fit fixing structure between the first rubber core and the first shell, which simplifies the design of the first shell and the first rubber core, and facilitates the injection molding of the first shell. The overall assembly structure is simple and convenient.

Specifically, at the inner end of the first housing 101, there is a first insertion part 110 extending forward into the second boss 302, and one end of the first pin 103 extends to the middle of the first insertion part 110. , one end of the second housing 201 is inserted into the second boss 302 and arranged around the first insertion portion 110 .

In this embodiment, the second plug 200 further includes a second rubber core 205 that is engaged in the second housing 201 , the first jack terminal 203 is engaged in the second rubber core 205 , and the second rubber core 205 Insert one end of one end into the first plug-in part 110, so that the first socket terminal 203 and the first pin 103 are plugged together; between the second cable 202 and the second housing 201, there are second The waterproof ring 206 and the second tail buckle 207 use the second waterproof ring to seal the inside of the second housing, the second tail buckle 207 is fastened to the second housing 201, and the inner circumference of the tail buckle is tightly connected to the outer circumference of the cable. , so as to fix the cable and prevent the internal connection structure from being affected by the transverse tensile force of the cable; a shielding ring 208 is provided between the second cable 202 and the second rubber core 205 .

Specifically, the inner wall of the outer end of the second boss 302 is provided with a stop step 304, and the outer circumference of the second housing 201 is radially provided with a first stop portion 209 that cooperates with the stop step 304. The outer circumference of the body 201 is also radially provided with a second stop portion 210 that abuts against the outer end surface of the second boss 302, forming a double stop structure, while ensuring that the second plug is inserted in place, it is prevented from excessively moving forward. Squeeze to the first plug.

Specifically, the outer periphery of the second housing 201 is concavely provided with an annular groove 211 for installing a waterproof ring 212, and the waterproof ring is located between the first stop part 209 and the second stop part 210, and the waterproof ring is connected to the second stop part 210. The inner wall of the second boss 302 abuts, so that after the second plug is plugged into the fixing seat, the plug port is sealed with a waterproof ring.

The technical solutions provided by the embodiments of the present invention have been introduced in detail above. In this paper, specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the present invention. The principle of the embodiment; at the same time, for those of ordinary skill in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and the scope of application. Utility model restrictions.

Claims (10)

1. A connecting structure of a low-current connector is characterized by comprising a fixed seat, a first plug and a second plug, wherein the first plug is installed on the fixed seat, the second plug is spliced with the first plug, a first installation hole penetrates through the front and back of the fixed seat, the first plug comprises a first shell, a first cable and a first contact pin, the first shell is clamped and fixed in the first installation hole in an injection molding mode, one end of the first cable is arranged in the first shell, and the first contact pin is arranged at the end part of the first cable in a compression joint mode and clamped and arranged in the first shell; the second plug comprises a second shell, a second cable and a first jack terminal, wherein one end of the second shell is inserted into the first mounting hole, one end of the second cable is arranged in the second shell, the end part of the second cable is arranged in the second shell in a compression joint mode, the first jack terminal is clamped in the second shell, and the first jack terminal is connected with the first contact pin in an inserting mode.

2. The connecting structure of the small-current connector according to claim 1, wherein a first boss and a second boss are protruded from two side surfaces of the fixing base respectively, the first boss and the second boss correspond to each other in the front-rear direction, the first mounting hole penetrates through the first boss and the second boss in the front-rear direction, and the first housing is fixedly connected with the first boss in a clamping manner.

3. The connecting structure of small current connector as claimed in claim 2, wherein the first housing has a first inserting portion extending forward into the second boss at an inner end thereof, the first pin has an end extending into the first inserting portion, and the second housing has an end inserted into the second boss and surrounding the first inserting portion.

4. The connecting structure of a small-current connector according to claim 3, wherein a buckle with a right-angle section is arranged on an inner wall of an outer end of the first boss, and a clamping groove matched with the buckle in shape and sleeved with the buckle is arranged on the periphery of the first shell.

5. The connecting structure of the small-current connector according to claim 4, wherein the first plug further comprises a first rubber core clamped in the first housing, and the first pin is clamped in the first rubber core; first waterproof circle and first tail are detained by interior toward being equipped with outward in proper order between first cable and the first casing, first tail detain with first casing lock.

6. The connecting structure of the small-current connector according to claim 5, wherein at least one lead-in hole penetrates through the first waterproof ring, and a pressure column which is inserted into the lead-in hole and pushes the first rubber core forward is arranged on the inner side surface of the first tail buckle.

7. The connecting structure of the small-current connector according to claim 6, wherein the second plug further comprises a second rubber core clamped in the second housing, the first jack terminal is clamped in the second rubber core, and one end of the second rubber core is inserted into the first inserting portion so that the first jack terminal and the first pin are inserted; a second waterproof ring and a second tail buckle are sequentially arranged between the second cable and the second shell from inside to outside, and the second tail buckle is buckled with the second shell; and a shielding ring is arranged between the second cable and the second rubber core.

8. The connecting structure of a small current connector according to claim 7, wherein the inner wall of the outer end of the second boss is recessed with a stop step, the outer periphery of the second housing is radially provided with a first stop portion engaged with the stop step, and the outer periphery of the second housing is further radially provided with a second stop portion abutted against the outer end surface of the second boss.

9. The connection structure of a small current connector according to claim 8, wherein a ring groove for attaching a waterproof ring is recessed in an outer periphery of the second housing, and the waterproof ring abuts against an inner wall of the second boss.

10. The connecting structure of a low-current connector according to claim 9, wherein the second boss further has a buckle, the second plug further includes a locking component disposed outside the second housing and buckled with the buckle, and the second housing is provided with a mounting groove for mounting the locking component; locking assembly including the middle lever arm of locating in the mounting groove of rotating and slide the slider of locating in the mounting groove, the one end of lever arm be equipped with the bayonet socket of buckle lock, the other end of lever arm inserts in the slider, just the tip of lever arm with be equipped with the spring between the slider, the both sides of slider are protruding respectively and are equipped with a location portion, keep away from in the mounting groove the arch is equipped with on the one end inner wall of buckle and is used for supporting the spacing platform of location portion.

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