CN220510354U - Wire end connector and connector assembly - Google Patents

Abstract

The present utility model relates to the field of connectors, and more particularly, to a wire end connector and a connector assembly. The wire end connector comprises a wire end shell, a waterproof pad, a female terminal and a wire, wherein a first accommodating cavity and a second accommodating cavity are arranged in the wire end shell, a spring piece is arranged on the side wall of the female terminal, and the wire is fixedly connected to the tail end of the female terminal; and the inner side wall of the second accommodating cavity is provided with a limiting lug and a limiting surface which are sequentially arranged along the insertion direction of the female terminal. When the waterproof terminal is assembled, the front end of the female terminal can puncture the waterproof pad and be inserted into the second accommodating cavity, and when the front end of the female terminal is abutted to the limiting surface, the waterproof pad is in interference fit with the first accommodating cavity, and the electric wire is in interference fit with the waterproof pad, so that the waterproof sealing function is realized; the shell fragment is located the one side that spacing lug is close to female terminal front end for the free end of shell fragment can with spacing lug butt, avoids female terminal to break away from the second and holds the chamber, improves connection stability.

Description

Wire end connector and connector assembly

Technical Field

The present utility model relates to the field of connectors, and more particularly, to a wire end connector and a connector assembly.

Background

The connector is used for connecting two independent electronic devices so as to ensure that current and signals can smoothly, continuously and reliably flow and transfer, and the electronic devices can realize preset functions. The connector generally refers to a connector assembly, and the connector assembly comprises a wire end connector and a board end connector, wherein the wire end connector generally comprises a wire end shell and a female terminal arranged in the wire end shell, and the female terminal is connected with a wire; the board-end connector generally comprises a board-end housing and a male terminal mounted in the board-end housing, and the electrical connection and communication connection at two ends of the connector assembly are realized through the plug-in cooperation of the male terminal and the female terminal.

For connector assemblies used outdoors or in water environments or in humid environments, it is necessary to waterproof the wire-end connectors and the board-end connectors to avoid water penetrating into the connectors to cause rusting or short-circuit faults of metal components in the connectors. However, the existing waterproof schemes are mostly aimed at waterproof between the line-end connector and the board-end connector, and cannot solve the waterproof problem of the line-end connector itself. In addition, the wire end connector is generally connected to the wire, and when the wire is pulled, the wire pulls the female terminal backward, thereby affecting the connection stability of the female terminal and the male terminal.

Accordingly, there is a need for a line-end connector that solves the above-mentioned problems.

Disclosure of Invention

A first object of the present utility model is to provide a wire end connector for solving the waterproof problem and the connection stability problem of the wire end connector.

A second object of the present utility model is to provide a connector assembly, which has good waterproof performance and good connection stability by applying the above-mentioned wire end connector.

In order to achieve the above object, the following technical scheme is provided:

in a first aspect, there is provided a wire end connector including a wire end housing, a waterproof pad, a female terminal, and a wire fixedly connected to an end of the female terminal;

a first accommodating cavity for accommodating the waterproof pad and a second accommodating cavity for accommodating the female terminal are arranged in the wire end shell, and a limiting lug and a limiting surface which are sequentially arranged along the insertion direction of the female terminal are arranged on the inner side wall of the second accommodating cavity;

the waterproof pad is in interference fit with the first accommodating cavity;

be equipped with the shell fragment on female terminal's the lateral wall, female terminal's front end can puncture waterproof pad and insert in the second holds the chamber, as female terminal's front end with spacing face butt time, the electric wire with waterproof pad interference fit, the shell fragment is located spacing lug is close to one side of female terminal front end.

As an alternative scheme of the wire end connector, the waterproof pad is provided with a blind hole corresponding to the second accommodating cavity, and the wire is in interference fit with the blind hole.

As an alternative scheme of the line end connector, the line end connector further comprises a cover plate, the cover plate is fixed in the first accommodating cavity, a step surface is arranged between the first accommodating cavity and the second accommodating cavity, and the waterproof pad is located between the cover plate and the step surface.

As an alternative of the wire end connector, the limit bump includes a guide portion and a blocking surface that are sequentially disposed along the insertion direction of the female terminal, the guide portion includes an inclined surface that gradually approaches the center line of the second accommodating cavity along the insertion direction of the female terminal, and the blocking surface is used for abutting against the elastic sheet.

As an alternative to the line end connector, the blocking surface is perpendicular to a center line of the second receiving cavity.

As an alternative to the wire end connector, the length of the female terminal is not greater than the length of the second accommodation chamber.

As an alternative to the line-end connector, one of the first accommodating chambers is provided with at least two second accommodating chambers arranged in parallel at intervals.

In a second aspect, there is provided a connector assembly comprising a board end connector and a line end connector according to any one of the preceding aspects, the board end connector comprising a board end housing and a male terminal mounted on the board end housing, the board end housing being provided with a first cavity for receiving the line end housing, the male terminal being insertable into the female terminal.

As an alternative of the connector assembly, the connector assembly further comprises a sealing ring, and a groove for accommodating the sealing ring is formed on the outer wall of the wire end housing and/or the inner side wall of the first cavity.

As an alternative scheme of the connector assembly, an elastic buckle is arranged on the outer wall of the wire end shell, and a clamping groove matched with the elastic buckle is arranged on the outer wall of the plate end shell.

As an alternative scheme of the connector assembly, an elastic buckle is arranged on the outer wall of the wire end shell, and a clamping protrusion which is in butt joint with the elastic buckle is arranged on the outer wall of the plate end shell.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a wire end connector, which comprises a wire end shell, a waterproof pad, a female terminal and a wire, wherein a first accommodating cavity and a second accommodating cavity are arranged in the wire end shell; and the inner side wall of the second accommodating cavity is provided with a limiting lug and a limiting surface which are sequentially arranged along the insertion direction of the female terminal. When the waterproof pad is assembled, the front end of the female terminal can puncture the waterproof pad and is inserted into the second accommodating cavity, and when the front end of the female terminal is abutted to the limiting surface, the electric wire is in interference fit with the waterproof pad so as to realize a waterproof sealing function; the shell fragment is located the one side that spacing lug is close to female terminal front end for the free end of shell fragment can with spacing lug butt, avoids female terminal to break away from the second and holds the chamber, improves connection stability.

The connector assembly provided by the utility model has good waterproof performance and good connection stability by applying the wire end connector.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is an exploded view of a first connector assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a first connector assembly according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is an exploded view of a second connector assembly according to an embodiment of the present utility model;

fig. 5 is a schematic cross-sectional view of a second connector assembly according to an embodiment of the present utility model.

Reference numerals:

1. a wire end connector; 11. a wire end housing; 110. an elastic buckle; 111. a first accommodation chamber; 112. a second accommodation chamber; 1121. a limit bump; 11211. a guide part; 11212. a blocking surface; 1122. a limiting surface; 113. a guide groove; 12. a waterproof pad; 121. a blind hole; 13. a female terminal; 131. a spring plate; 14. an electric wire; 15. a cover plate;

2. a board end connector; 21. a plate end housing; 2101. a clamping groove; 2102. a clamping protrusion; 211. a first cavity; 212. a second cavity; 213. a guide rail; 22. a male terminal;

3. and (3) sealing rings.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, the terms "upper," "lower," "left," "right," and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Fig. 1 shows an exploded view of a first connector assembly provided in this embodiment. Fig. 2 shows a schematic cross-sectional view of a first connector assembly provided in this embodiment. As shown in fig. 1-2, the connector assembly comprises a wire end connector 1 and a board end connector 2, wherein the wire end connector 1 comprises a wire end housing 11 and a female terminal 13; the board-end connector 2 includes a board-end housing 21 and a male terminal 22. The male terminal 22 is in plug-in fit with the female terminal 13, and the male terminal 22 can be inserted into the female terminal 13 to realize electrical connection and communication connection between the line-end connector 1 and the board-end connector 2.

The board end housing 21 is provided with a first cavity 211, and the wire end housing 11 is accommodated in the first cavity 211. So set up, line end connector 1 and board end connector 2 have two grafting cooperation portions, and one is female terminal 13 and the grafting cooperation of public terminal 22, and two is the grafting cooperation of line end casing 11 and the first cavity 211 of board end casing 21 for the grafting cooperation of line end connector 1 and board end connector 2 is more stable, and can play certain water-proof effects.

The outer wall of the wire end housing 11 is provided with a guide groove 113 extending along the insertion direction, and the first cavity 211 of the plate end housing 21 is provided with a guide bar in sliding fit with the guide groove 113. By the cooperation of the guide grooves 113 and the guide bars, the positioning of the wire end housing 11 and the board end housing 21 can be ensured, and the accurate effect of the cooperation of the male terminal 22 and the female terminal 13 can be ensured.

An elastic buckle 110 is provided on the outer wall of the wire end housing 11, and a clamping groove 2101 matched with the elastic buckle 110 is provided on the outer wall of the plate end housing 21. When the wire end housing 11 is inserted into the first cavity 211, the elastic buckle 110 can be clamped into the clamping groove 2101, and the wire end housing 11 can be prevented from being separated from the first cavity 211 through the clamping fit of the elastic buckle 110 and the clamping groove 2101, so that the connection stability of the wire end housing 11 and the board end housing 21 is ensured, and the connection stability of the wire end connector 1 and the board end connector 2 is further improved.

The plate end housing 21 is further provided with a second cavity 212, a partition plate is arranged between the first cavity 211 and the second cavity 212, and a through hole for inserting the male terminal 22 is formed in the partition plate. When the plate end shell 21 and the male terminal 22 are assembled, the male terminal 22 is inserted into the through hole, and then sealant is filled into the second cavity 212, so that the male terminal 22 can be fixed on the partition plate, and sealing and waterproofing of the male terminal 22 can be realized.

In order to improve the waterproof performance between the line end connector 1 and the board end connector 2, the connector assembly further comprises a sealing ring 3, wherein the sealing ring 3 is located between the inner side wall of the first cavity 211 and the outer side wall of the line end housing 11, and is used for realizing waterproof sealing between the two.

The groove is arranged on the outer wall of the wire end shell 11, the sealing ring 3 is accommodated in the groove, the outer surface of the sealing ring 3 protrudes out of the outer wall of the wire end shell 11, and when the wire end shell 11 is inserted into the first cavity 211, the sealing ring 3 deforms under the extrusion of the inner side wall of the first cavity 211 so as to realize sealing and waterproofing. Of course, in other embodiments, a groove for accommodating the sealing ring 3 may be formed on the inner side wall of the first cavity 211, which can achieve the above effect; or grooves may be formed on the outer wall of the wire end housing 11 and the inner wall of the first cavity 211, so as to accommodate the sealing ring 3 when the two grooves are matched.

The line terminal connector 1 further comprises an electric wire 14, the electric wire 14 being connected to the end of the female terminal 13, the electric wire 14 generally serving to lengthen the connectable distance of the line terminal connector 1 and to accommodate connection between electronic devices of different distances. The connection of the wire 14 to the female terminal 13 may be, for example, by riveting or gluing.

In order to improve the waterproof performance of the line terminal connector 1, the line terminal connector 1 further includes a waterproof pad 12. Illustratively, the wire end housing 11 is provided therein with a first accommodating cavity 111 for accommodating the waterproof pad 12 and a second accommodating cavity 112 for accommodating the female terminal 13, the waterproof pad 12 is in interference fit with the first accommodating cavity 111, and the front end of the female terminal 13 can puncture the waterproof pad 12 into the second accommodating cavity 112. By this arrangement, the tightness between the waterproof pad 12 and the electric wire 14 can be improved, and the waterproof performance can be further improved.

The waterproof pad 12 is provided with a blind hole 121, and the female terminal 13 is inserted into the blind hole 121, and then pierces the bottom of the blind hole 121 to enter the second accommodating cavity 112. With this arrangement, the female terminal 13 can be easily pierced through the waterproof pad 12, and the convenience of assembly can be improved. Preferably, the wire 14 is interference fit with the blind hole 121 to improve the waterproof performance. The waterproof pad 12 is made of rubber. Such as silicone rubber, isoprene polymer, copolymer of butadiene and styrene, etc.

The length of the female terminal 13 is not greater than the length of the second accommodating cavity 112, so that the female terminal 13 can be fully accommodated in the second accommodating cavity 112, the electric wire 14 is tightly matched with the waterproof pad 12, and the sealing waterproof effect of the female terminal 13 is improved.

Preferably, one first receiving cavity 111 is provided with at least two second receiving cavities 112 disposed in parallel at a spacing. A plurality of blind holes 121 can be arranged on one waterproof pad 12, and the blind holes 121 and the second accommodating cavities 112 are arranged in a one-to-one correspondence manner, so that on one hand, the assembly is convenient, and meanwhile, the assembly efficiency can be improved; on the other hand, one waterproof pad 12 corresponds to a plurality of female terminals 13 and wires 14, and the waterproof pad 12 is pressed to simultaneously deform all the blind holes 121, thereby improving the sealing effect.

In order to fix the waterproof pad 12 in the first receiving cavity 111, the line-end connector 1 further includes a cover plate 15, the cover plate 15 is fixed in the first receiving cavity 111, a step surface is provided between the first receiving cavity 111 and the second receiving cavity 112, and the waterproof pad 12 is located between the cover plate 15 and the step surface. In addition, the cover plate 15 may be further pressed down to press the waterproof pad 12, and the waterproof pad 12 may be deformed under the pressing force of the cover plate 15, so that the waterproof pad 12 is tightly fitted with the cavity wall of the first accommodation cavity 111 and the electric wire 14, thereby being capable of improving the sealing waterproof performance of the waterproof pad 12.

The female terminal 13 is inserted into the second accommodation chamber 112 with the electric wire 14, and when the electric wire 14 is pulled, the female terminal 13 is easily pulled, and even the female terminal 13 is pulled out of the second accommodation chamber 112, so that the connection between the female terminal 13 and the male terminal 22 is unstable and even broken.

In order to solve the above problem, the inner sidewall of the second receiving chamber 112 is provided with a stopper projection 1121 and a stopper surface 1122 sequentially provided along the insertion direction of the female terminal 13. The side wall of the female terminal 13 is provided with a spring piece 131, the front end of the female terminal 13 can puncture the waterproof pad 12 and be inserted into the second accommodating cavity 112, when the front end of the female terminal 13 is abutted against the limiting surface 1122, the electric wire 14 is in interference fit with the waterproof pad 12, and the spring piece 131 is located on one side of the limiting projection 1121, which is close to the front end of the female terminal 13. So set up, accessible shell fragment 131 and spacing lug 1121's butt effect avoids female terminal 13 too big in the movable range of second accommodation chamber 112, guarantees the stability of being connected between male terminal 22 and the female terminal 13.

Fig. 3 shows an enlarged view at a in fig. 2. As shown in fig. 3, the limit bump 1121 includes a guide portion 11211 and a blocking surface 11212 that are sequentially disposed along the insertion direction of the female terminal 13, the guide portion 11211 includes a slope gradually approaching the center line of the second accommodating cavity 112 along the insertion direction of the female terminal 13, and the blocking surface 11212 is for abutting against the elastic piece 131. So arranged, the guide portion 11211 of the limiting bump 1121 can press the elastic sheet 131 during the insertion process of the female terminal 13, so that the female terminal 13 is easier to be inserted into the second accommodating cavity 112; when the female terminal 13 is inserted into the limit surface 1122 of the second accommodating cavity 112, the elastic piece 131 is staggered from the limit bump 1121 and is located at one side of the limit bump 1121 near the front end of the female terminal 13, so that the elastic piece 131 can be abutted against the blocking surface 11212 of the limit bump 1121, and an anti-falling effect of preventing the female terminal 13 from separating from the second accommodating cavity 112 is achieved. Illustratively, the blocking surface 11212 is perpendicular to a centerline of the second receiving cavity 112. By this arrangement, the directions of the urging forces between the blocking surface 11212 and the elastic piece 131 are all concentrated in the insertion direction, and the female terminal 13 can be prevented from coming out of the second accommodation chamber 112.

Fig. 4 shows an exploded view of a second connector assembly provided by the present embodiment. Fig. 5 shows a schematic cross-sectional view of a second connector assembly provided in this embodiment. As shown in fig. 4 to 5, the connector assembly includes a wire end connector 1 and a board end connector 2, wherein the wire end connector 1 includes a wire end housing 11 and a female terminal 13; the board-end connector 2 includes a board-end housing 21 and a male terminal 22. The male terminal 22 is in plug-in fit with the female terminal 13, and the male terminal 22 can be inserted into the female terminal 13 to realize electrical connection and communication connection between the line-end connector 1 and the board-end connector 2.

The second connector assembly of this example is substantially identical to the first connector assembly of the above-described example, and detailed descriptions thereof are omitted herein. The main difference between the two is that:

in this example, an elastic buckle 110 is provided on the outer wall of the wire end housing 11, and a locking protrusion 2102 which abuts against the elastic buckle 110 is provided on the outer wall of the plate end housing 21. The stability of the connection of the line-end housing 11 with the board-end housing 21 is improved by the cooperation of the elastic snap 110 and the snap 2102.

Two convex clamping plates 2102 are arranged on the plate end shell 21 at intervals, the elastic clamping buckle 110 of the wire end shell 11 can be inserted between the two convex clamping plates 2102, and the upper surface of the elastic clamping buckle 110 can be abutted against the lower surface of the convex clamping plates 2102 so as to prevent the wire end shell 11 from being separated from the first cavity 211 of the plate end shell 21.

Note that in the description of this specification, a description referring to the terms "one embodiment," "in other embodiments," and the like means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A wire end connector characterized by comprising a wire end housing (11), a waterproof pad (12), a female terminal (13) and a wire (14), wherein the wire (14) is fixedly connected to the end of the female terminal (13);

a first accommodating cavity (111) for accommodating the waterproof pad (12) and a second accommodating cavity (112) for accommodating the female terminal (13) are formed in the wire end shell (11), and a limiting lug (1121) and a limiting surface (1122) which are sequentially arranged along the insertion direction of the female terminal (13) are formed in the inner side wall of the second accommodating cavity (112);

the waterproof pad (12) is in interference fit with the first accommodating cavity (111);

be equipped with shell fragment (131) on the lateral wall of female terminal (13), the front end of female terminal (13) can puncture waterproof pad (12) and insert in second holds chamber (112), when the front end of female terminal (13) with spacing face (1122) butt, electric wire (14) with waterproof pad (12) interference fit, shell fragment (131) are located spacing lug (1121) is close to one side of female terminal (13) front end.

2. The line end connector according to claim 1, characterized in that the waterproof pad (12) is provided with a blind hole (121) corresponding to the second accommodation cavity (112), and the electric wire (14) is interference fit with the blind hole (121).

3. The line end connector according to claim 2, further comprising a cover plate (15), the cover plate (15) being fixed in the first receiving cavity (111), a step surface being provided between the first receiving cavity (111) and the second receiving cavity (112), the waterproof pad (12) being located between the cover plate (15) and the step surface.

4. The line-end connector according to claim 1, wherein the limit projection (1121) includes a guide portion (11211) and a blocking surface (11212) provided in order along the insertion direction of the female terminal (13), the guide portion (11211) including a slope gradually approaching a center line of the second accommodation chamber (112) along the insertion direction of the female terminal (13), the blocking surface (11212) being for abutting with the elastic piece (131).

5. The line end connector of claim 4, wherein the blocking surface (11212) is perpendicular to a centerline of the second receiving cavity (112).

6. The line end connector according to claim 1, characterized in that the length of the female terminal (13) is not greater than the length of the second accommodation chamber (112).

7. The line end connector according to any one of claims 1 to 6, characterized in that one of the first receiving cavities (111) is provided with at least two parallel spaced apart second receiving cavities (112) respectively.

8. A connector assembly comprising a board end connector (2) and a wire end connector according to any one of claims 1-7, the board end connector (2) comprising a board end housing (21) and a male terminal (22) mounted on the board end housing (21), the board end housing (21) being provided with a first cavity (211) for receiving the wire end housing (11), the male terminal (22) being insertable into the female terminal (13).

9. Connector assembly according to claim 8, further comprising a sealing ring (3), wherein grooves for receiving the sealing ring (3) are provided on the outer wall of the wire end housing (11) and/or on the inner side wall of the first cavity (211).

10. The connector assembly according to claim 8, wherein an elastic buckle (110) is provided on an outer wall of the wire end housing (11), and a clamping groove (2101) matched with the elastic buckle (110) is provided on an outer wall of the board end housing (21); or (b)

An elastic buckle (110) is arranged on the outer wall of the wire end shell (11), and a clamping protrusion (2102) which is in butt joint with the elastic buckle (110) is arranged on the outer wall of the plate end shell (21).