CN218975933U

CN218975933U - Connector terminal and electric connector

Info

Publication number: CN218975933U
Application number: CN202223160464.8U
Authority: CN
Inventors: 魏荣杰; 徐进勇; 汤海舰; 陈超南
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-05
Anticipated expiration: 2032-11-28

Abstract

In order to overcome the problems that the existing connector terminal structure is unstable in connection and easy to loosen due to external factors, the utility model provides a connector terminal which comprises an insertion part and a baffle, wherein the insertion part is of a thin-wall structure, the baffle is arranged on the outer wall of the insertion part, and the baffle comprises an abutting section; along the direction from the head end to the tail end of the plug-in part, the distance between the abutting section and the outer wall of the plug-in part is gradually increased, and the ratio of the thickness of the baffle to the thickness of the outer wall of the plug-in part is greater than 1.2:1. Meanwhile, the utility model also discloses an electric connector of the connector terminal. The connector terminal provided by the utility model can effectively ensure the structural strength of the baffle plate relative to the plug-in part, so that the problem that the baffle plate is deformed and invalid under the action of external force can be avoided under the conditions of low-frequency vibration and high-frequency vibration, and the reliability and the stability of the electrical connection of the connector terminal are improved.

Description

Connector terminal and electric connector

Technical Field

The utility model belongs to the technical field of electric connectors, and particularly relates to a connector terminal and an electric connector.

Background

Currently, automobile products are increasingly electronic and intelligent, more connectors are required to maintain electrical connection between various parts, and reliability of the connector terminal structure also concerns safety and stability of the whole automobile.

The automobile parts are required to have high reliability requirements, and under complex road conditions and extreme conditions, reliable electric connection between the automobile parts is required to be ensured, so that the safety of the automobile in driving can be ensured. The automobile parts are connected with each other through the connector, so that the terminal structure of the connector is required to keep reliable contact in severe vibration and complex environments, and stable and reliable electric connection between the male terminal and the female terminal is ensured. The male terminal and the female terminal of the connector are generally fixed in the sheath of the connector through the baffle, the baffle is abutted against the stop part of the sheath, the movement of the terminal in the accommodating cavity is limited, the good connection of the male terminal and the female terminal is ensured, and the stable and reliable electric connection of the connector is enhanced.

However, the problem that the strength is low generally exists in the separation blade structure of current connector terminal, especially is used for the separation blade structure of small-size terminal, and under long-time low frequency vibrations and high frequency vibrations's abominable service environment, the separation blade is easily influenced by external force and is led to the separation blade to buckle inefficacy, and then influences the connection stability of terminal, leads to the terminal pine to take off, appears the problem of electrical connection inefficacy.

Disclosure of Invention

Aiming at the problems that the existing connector terminal structure is unstable in connection and easy to loosen due to external factors, the utility model provides a connector terminal and an electric connector.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

in one aspect, the utility model provides a connector terminal, which comprises an insertion part and a baffle, wherein the insertion part is of a thin-wall structure, the baffle is arranged on the outer wall of the insertion part, and the baffle comprises an abutting section; along the direction from the head end to the tail end of the plug-in part, the distance between the abutting section and the outer wall of the plug-in part is gradually increased, and the ratio of the thickness of the baffle to the thickness of the outer wall of the plug-in part is greater than 1.2:1.

Optionally, the ratio of the thickness of the baffle to the thickness of the outer wall of the insertion part is 1.2-1.8:1.

Optionally, the included angle between the abutting section and the outer wall of the plug-in part is 10-80 degrees.

Optionally, the included angle between the abutting section and the outer wall of the plug-in part is 10-60 degrees.

Optionally, the ratio of the width of the abutting section to the outer diameter of the insertion part is 0.5-0.9:1.

Optionally, the separation blade further includes a connection section, the butt section connect in the one end of connection section, the other end of connection section connect in the outer wall of mating portion.

Optionally, the connection mode of the connection section and the plug-in part includes one or more of welding, riveting and clamping.

Optionally, the connecting section is "worker" font structure, the outer wall of inserting the portion is provided with the adaptation the recess of connecting section, the connecting section joint in the recess.

Optionally, the ratio of the length of the abutting section to the length of the connecting section is 0.5-3:1.

Optionally, the baffle is selected from copper or an alloy thereof, aluminum or an alloy thereof, iron or an alloy thereof, nickel or an alloy thereof, and magnesium or an alloy thereof.

Optionally, the insertion part is a strip-shaped thin-wall structure formed by bending and winding.

Optionally, the head end of the plug-in part is provided with an opening, and an elastic contact arm is arranged in the inner cavity of the plug-in part.

Optionally, the connector terminal further includes an extension section, a conductor crimping portion, and an insulation crimping portion, one end of the extension section is connected to the tail end of the mating portion, the insulation crimping portion is disposed at the other end of the extension section, the conductor crimping portion is disposed on the extension section, and the conductor crimping portion is located between the insulation crimping portion and the mating portion.

In another aspect, the present utility model provides an electrical connector comprising a housing provided with a receiving cavity for insertion of the connector terminal, and a connector terminal as described above, wherein a stopper is provided in an inner wall of the receiving cavity, and the abutment section abuts against the stopper to limit displacement of the connector terminal in the receiving cavity when the connector terminal is inserted into the receiving cavity.

According to the connector terminal provided by the utility model, the baffle is arranged on the outer wall of the plug-in part, the distance between the abutting section and the outer wall of the plug-in part is gradually increased along the direction from the head end to the tail end of the plug-in part to form the inclined-plane spring plate structure, so that when the plug-in part is used for being inserted into the shell which is matched with the plug-in part, the abutting section is elastically deformed under the stress, and when the abutting section reaches the stop of the shell, the elastic deformation of the abutting section is restored and abuts against the stop to form a limiting effect, and more importantly, the plug-in part and the baffle of the connector terminal are respectively designed, and experiments find that when the thickness ratio of the baffle to the outer wall thickness of the plug-in part is larger than 1.2:1, the structural strength of the baffle relative to the plug-in part can be effectively ensured, and further the problem that the baffle is deformed under the conditions of low-frequency vibration and high-frequency vibration, the problem that the baffle is subjected to the external force effect is avoided, and the reliability of the electrical connection of the connector terminal is improved, and the connector terminal is suitable for being used in complex conditions such as vehicle environment.

Drawings

Fig. 1 is a cross-sectional view of a connector terminal provided by the present utility model;

fig. 2 is a schematic structural view of a connector terminal provided by the present utility model;

fig. 3 is a schematic structural diagram of an electrical connector according to the present utility model.

Reference numerals in the drawings of the specification are as follows:

1. a connector terminal; 11. an insertion portion; 111. an elastic contact arm; 1111. an arc-shaped bending part; 112. a strip-shaped avoidance hole; 113. a groove; 114. a first protrusion; 115. a second protrusion; 12. a baffle; 121. an abutment section; 122. a connection section; 1221. a first end; 1222. an intermediate section; 1223. a second end; 13. an extension section; 14. a conductor crimping part; 141. a first crimping part; 142. a second crimping part; 15. an insulating crimping part; 151. a third crimping part; 152. a fourth crimping part; 2. a housing; 21. a receiving chamber; 22. a through hole; 23. a stop.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "head end", "tail end" are orientation limitations based on the operating conditions of the mating portion, for example, the end of the mating portion for inserting other electrical devices is the head end of the mating portion, and the end of the mating portion for connecting with a wire is the tail end of the mating portion, merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

Referring to fig. 1-2, an embodiment of the present utility model provides a connector terminal 1, which includes an insertion portion 11 and a blocking piece 12, wherein the insertion portion 11 has a thin-wall structure, the blocking piece 12 is separately disposed on an outer wall of the insertion portion 11, and the blocking piece 12 includes an abutting section 121; along the direction from the head end to the tail end of the insertion portion 11, the distance between the abutting section 121 and the outer wall of the insertion portion 11 gradually increases, and the ratio of the thickness of the blocking piece 12 to the thickness of the outer wall of the insertion portion 11 is greater than 1.2:1.

Along the direction from the head end to the tail end of the mating portion 11, the distance between the abutting section 121 and the outer wall of the mating portion 11 is gradually increased to form an inclined plane structure, so that when the mating portion 11 is used to be inserted into the housing 2 adapted thereto, the abutting section 121 is elastically deformed under the stress, when the abutting section 23 of the housing 2 is reached, the elastic deformation of the abutting section 121 is recovered and abuts against the abutting section 23 to form a limiting function, more importantly, unlike the existing integrally formed terminal structure, the mating portion 11 and the blocking piece 12 of the connector terminal 1 are respectively designed in the connector terminal 1, and experiments find that when the ratio of the thickness of the blocking piece 12 to the thickness of the outer wall of the mating portion 11 is greater than 1.2:1, the structural strength of the blocking piece 12 relative to the mating portion 11 can be effectively ensured, and further, under the condition of low-frequency vibration and high-frequency vibration, the problem that the blocking piece 12 is deformed under the action of the external force is avoided, the reliability of the electrical connection of the connector terminal 1 is improved, the reliability of the connector terminal 1 is improved, the connector terminal is suitable for being used in complex conditions such as vehicles.

In one embodiment, the abutting section 121 is a strip-shaped sheet structure.

It should be noted that the term "thickness" refers to the distance between two surfaces of the sheet-like structure or the thin-walled structure where the area is the largest. Specifically, the "thickness of the baffle 12" is indicated by the symbol H in fig. 1; the "outer wall thickness of the mating part 11" is indicated by a symbol h in fig. 1.

In an embodiment, the ratio of the thickness of the blocking piece 12 to the thickness of the outer wall of the insertion portion 11 is 1.2-1.8:1.

When the ratio of the thickness of the blocking piece 12 to the thickness of the outer wall of the insertion portion 11 is in the above range, the abutting section 121 of the blocking piece 12 can be ensured to have proper elasticity on the basis of effectively ensuring the structural strength of the blocking piece 12, so that the problem of difficult insertion and extraction due to insufficient elasticity of the blocking piece 12 is avoided.

In an embodiment, the angle between the abutting section 121 and the outer wall of the insertion portion 11 is 10 ° to 80 °.

In a preferred embodiment, the angle between the abutting section 121 and the outer wall of the insertion part 11 is 10 ° to 60 °.

Specifically, the "angle between the abutting section 121 and the outer wall of the mating portion 11" is shown as the symbol θ in fig. 1.

The greater the contained angle of butt section 121 with insert portion 11 outer wall, then the better the spacing effect that it formed, the higher also the intensity and elasticity requirement to separation blade 12 simultaneously, the more easily the problem of irreversible deformation appears, when butt section 121 with insert portion 11 outer wall's contained angle is in above-mentioned within range, can form better spacing effect, has better structural stability simultaneously, guarantees long-term connection stability.

In an embodiment, the ratio of the width of the abutting section 121 to the outer diameter of the insertion portion 11 is 0.5-0.9:1.

It should be noted that, the term "width of the abutting section 121" refers to a distance between two sides of the abutting section 121 that are furthest apart in a section perpendicular to the extending direction thereof. The term "outer diameter of the mating part 11" refers to the distance between the two sides of the mating part 11 that are furthest apart in a section perpendicular to the direction in which it extends.

When the ratio of the width of the abutting section 121 to the outer diameter of the mating portion 11 is in the above range, it is ensured that the abutting section 121 has high bending strength, and irreversible bending of the abutting section 121 due to external force is avoided.

In an embodiment, the blocking piece 12 further includes a connection section 122, the abutment section 121 is connected to one end of the connection section 122, and the other end of the connection section 122 is connected to the outer wall of the mating portion 11.

Because the abutting section 121 needs to be separated from the inserting portion 11 to achieve the functions of elastic deformation and limiting, the connecting section 122 is used for being connected with the inserting portion 11, which is beneficial to improving the connection area between the baffle 12 and the inserting portion 11, and further improving the installation stability of the baffle 12.

In an embodiment, the abutting section 121 and the connecting section 122 are integrally formed, the abutting section 121 is an extending structure of the connecting section 122, and the abutting section 121 is bent obliquely relative to the connecting section 122 in a direction away from the mating portion 11.

In various embodiments, the connection between the connection section 122 and the mating portion 11 includes one or more of welding, riveting, and clamping.

As shown in fig. 2, in an embodiment, the connection section 122 has an "i" structure, a groove 113 adapted to the connection section 122 is provided on the outer wall of the insertion portion 11, and the connection section 122 is clamped in the groove 113.

Specifically, the connecting section 122 includes a first end 1221, a middle section 1222 and a second end 1223, two ends of the middle section 1222 are respectively connected with the first end 1221 and the second end 1223, the width of the first end 1221 and the width of the second end 1223 are both greater than the width of the middle section 1222, so as to form the i-shaped structure, the outer wall of the plug-in portion 11 is provided with a strip-shaped avoidance hole 112 for installing the baffle 12, two sides of the strip-shaped avoidance hole 112 are provided with a first protrusion 114 and a second protrusion 115 at intervals, the groove 113 is formed between the first protrusion 114 and the second protrusion 115, the middle section of the connecting section 122 is embedded in the groove 113, the first end 1221 and the second end 1223 are respectively located at two sides of the groove 113, the first end 1221 abuts against one side wall of the first protrusion 114 and one side wall of the second protrusion 115, the second end 1223 abuts against the other side wall of the first protrusion 114 and the other side wall of the second protrusion 115, and the second end 1223 abuts against the other side wall of the first protrusion 114 and the other side wall of the second protrusion 1222 forms a limit structure.

When the connector terminal 1 is inserted into the accommodating cavity 21 of the housing 2 or the connector terminal 1 is pulled out from the accommodating cavity 21 of the housing 2, the blocking piece 12 generates a larger acting force, and at this time, if the connecting force of the connecting section 122 and the inserting and matching part 11 is insufficient, the risk that the connecting section 122 is separated from the inserting and matching part 11 is caused, the connecting section 122 with the i-shaped structure is matched with the groove 113 on the inserting and matching part 11, so that the stress limit of the connecting section 122 in the axial direction of the inserting and matching part 11 can be effectively improved, and the separation of the blocking piece 12 and the inserting and matching part 11 is avoided.

In one embodiment, the connecting section 122 and the groove 113 are fixed to each other by welding.

Preferably, the welding mode adopts laser welding, is favorable to making the welded joint be smooth state, avoids producing burr and influences the plug effect.

In an embodiment, the ratio of the length of the abutting section 121 to the length of the connecting section 122 is 0.5-3:1.

Specifically, the "length of the abutment section 121" is indicated by the symbol L1 in fig. 1; the "length of the connecting segment 122" is indicated by the designation L2 in fig. 1.

In some embodiments, the baffle 12 is selected from copper or an alloy thereof, aluminum or an alloy thereof, iron or an alloy thereof, nickel or an alloy thereof, magnesium or an alloy thereof.

In some embodiments, the mating portion 11 is selected from copper or an alloy thereof, aluminum or an alloy thereof, iron or an alloy thereof, nickel or an alloy thereof, magnesium or an alloy thereof.

In an embodiment, the insertion portion 11 is a strip-shaped thin-walled structure formed by bending and winding.

Specifically, as shown in fig. 2, the sheet metal may be bent along a plurality of bending lines to obtain the mating portion 11, the direction from the head end to the tail end of the mating portion 11 is taken as a preset direction, the bending lines of the mating portion 11 are parallel to the preset direction, and by setting the number of bending lines and the bending angle, the mating portion 11 with different cross-sectional shapes, such as a male terminal shape or a female terminal shape, may be obtained.

As shown in fig. 1 and 2, in an embodiment, the plug-in portion 11 is a female terminal, a head end of the plug-in portion 11 is an opening, and an inner cavity of the plug-in portion 11 is provided with an elastic contact arm 111.

Specifically, the elastic contact arm 111 and the mating portion 11 are integrally formed, the elastic contact arm 111 is located at an edge position of the blank before the mating portion 11 is bent and is wound to the inner cavity of the mating portion 11 through bending, one end of the elastic contact arm 111 is fixed at the opening position of the mating portion 11, and the other end of the elastic contact arm 111 is biased towards the inner cavity direction of the mating portion 11, so that the other end of the elastic contact arm 111 is suspended in the middle of the inner cavity of the mating portion 11, and an arc-shaped bending portion 1111 is formed at the other end of the elastic contact arm 111, so as to form an elastic structure; correspondingly, a male terminal adapted to the mating portion 11 is provided with a lug, and when the male terminal is inserted into the cavity of the mating portion 11, the lug is elastically contacted with the arc-shaped bending portion 1111 of the elastic contact arm 111, thereby achieving electrical connection.

In other embodiments, the mating portion 11 may be a male terminal, and the female terminal corresponding to the mating portion 11 is provided with a groove structure, and an electrical connector is disposed in the groove structure, so that the mating portion 11 is inserted into the groove structure and abuts against the corresponding electrical connector to achieve electrical connection.

As shown in fig. 2, in an embodiment, the connector terminal 1 further includes an extension section 13, a conductor crimp portion 14, and an insulation crimp portion 15, wherein one end of the extension section 13 is connected to the tail end of the mating portion 11, the insulation crimp portion 15 is disposed at the other end of the extension section 13, the conductor crimp portion 14 is disposed on the extension section 13, and the conductor crimp portion 14 is located between the insulation crimp portion 15 and the mating portion 11.

Specifically, the conductor crimp portion 14 includes a first crimp portion 141 and a second crimp portion 142, the insulating crimp portion 15 includes a third crimp portion 151 and a fourth crimp portion 152, the first crimp portion 141 and the second crimp portion 142 are disposed on two sides of the middle of the extension section 13 in a V shape, and the first crimp portion 141 and the second crimp portion 142 are used for being pressed close to each other to fix the conductor portion of the wire; the third press-connection part 151 and the fourth press-connection part 152 are arranged on two sides of the tail end of the extension section 13 in a V shape, and the third press-connection part 151 and the fourth press-connection part 152 are used for being pressed close to each other to fix the wire insulation part.

The extending section 13 is a strip-shaped thin-wall structure with a V-shaped cross section, the extending section 13 is obtained by extending the tail end of the insertion portion 11 backward, the first press-connection portion 141 and the second press-connection portion 142 are respectively located on two side walls of the extending section 13 and extend outwards, the third press-connection portion 151 and the fourth press-connection portion 152 are respectively located on two side walls of the tail end of the extending section 13 and extend outwards, and in the extending direction of the extending section 13, the third press-connection portion 151 and the fourth press-connection portion 152 are arranged in a staggered manner.

In use, the connector terminal 1 needs to be electrically connected to a wire, the wire (not shown) includes a conductor part with a front end stripped of an insulating sheath and an insulating part with a rear end wrapped with the insulating sheath, the conductor part and a part of the insulating part are accommodated in the groove of the extension section 13, the conductor part is located between the first press-bonding part 141 and the second press-bonding part 142, the insulating part is located between the third press-bonding part 151 and the fourth press-bonding part 152, and the first press-bonding part 141 and the second press-bonding part 142 are folded inwards to form clamping and electrical connection functions on the conductor part; the third crimp portion 151 and the fourth crimp portion 152 are pressed close to each other and around the outer wall of the insulating portion to form a fixing effect on the insulating portion.

In an embodiment, the first crimp portion 141, the second crimp portion 142, the third crimp portion 151, and the fourth crimp portion 152 are each a sheet-like fin structure.

In one embodiment, the angle between the first crimp portion 141 and the second crimp portion 142 is 120 ° to 150 ° to facilitate the installation and fixation of the wire conductor portion.

In one embodiment, the angle between the third crimp portion 151 and the fourth crimp portion 152 is 120 ° to 150 °, so as to facilitate the installation and fixation of the wire insulation.

In an embodiment, the extension 13, the first crimp portion 141, the second crimp portion 142, the third crimp portion 151, the fourth crimp portion 152, and the mating portion 11 are integrally formed.

As shown in fig. 3, another embodiment of the present utility model provides an electrical connector including a housing 2 and a connector terminal 1 as described above, the housing 2 being provided with a receiving cavity 21 for insertion of the connector terminal 1, a stopper 23 being provided in an inner wall of the receiving cavity 21, the abutment section 121 abutting against the stopper 23 to limit displacement of the connector terminal 1 in the receiving cavity 21 when the connector terminal 1 is inserted into the receiving cavity 21.

Due to the adoption of the connector terminal 1, the electric connector has better electric performance, the baffle 12 provides higher limit strength, and the baffle 12 is prevented from deforming and failing caused by low-frequency vibration or high-frequency vibration of the connector terminal 1, so that stable and reliable electric connection of the electric connector is ensured.

In an embodiment, the side wall of the housing 2 is provided with a through hole 22 connected to the stop portion 23, and when the connector terminal 1 needs to be pulled out from the accommodating cavity 21, the abutting section 121 of the blocking piece 12 can be pressed by the through hole 22, so that the abutting section 121 of the blocking piece 12 is separated from the stop portion 23, and the limiting effect on the connector terminal 1 is released.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The connector terminal is characterized by comprising an insertion part and a baffle, wherein the insertion part is of a thin-wall structure, the baffle is arranged on the outer wall of the insertion part, and the baffle comprises an abutting section; along the direction from the head end to the tail end of the plug-in part, the distance between the abutting section and the outer wall of the plug-in part is gradually increased, and the ratio of the thickness of the baffle to the thickness of the outer wall of the plug-in part is greater than 1.2:1.

2. The connector terminal according to claim 1, wherein a ratio of a thickness of the blocking piece to an outer wall thickness of the mating portion is 1.2-1.8:1.

3. The connector terminal of claim 1, wherein the abutment section is at an angle of 10 ° to 80 ° to the outer wall of the mating portion.

4. The connector terminal of claim 1, wherein the abutment section is at an angle of 10 ° to 60 ° to the outer wall of the mating portion.

5. The connector terminal according to claim 1, wherein a ratio of a width of the abutting section to an outer diameter of the mating portion is 0.5 to 0.9:1.

6. The connector terminal of claim 1, wherein the blocking piece further comprises a connection section, the abutment section is connected to one end of the connection section, and the other end of the connection section is connected to the outer wall of the mating portion.

7. The connector terminal of claim 6, wherein the connection of the connection section to the mating portion includes one or more of welding, riveting, and clamping.

8. The connector terminal according to claim 7, wherein the connection section is of an "i" shape, and the outer wall of the insertion portion is provided with a groove adapted to the connection section, and the connection section is engaged in the groove.

9. The connector terminal of claim 6, wherein a ratio of a length of the abutment section to a length of the connection section is 0.5-3:1.

10. The connector terminal according to claim 1, wherein the shutter is selected from copper or an alloy thereof, aluminum or an alloy thereof, iron or an alloy thereof, nickel or an alloy thereof, magnesium or an alloy thereof.

11. The connector terminal according to claim 1, wherein the insertion portion is a strip-like thin-walled structure formed by bending and winding.

12. The connector terminal of claim 1, wherein the head end of the mating portion is an opening, and wherein the interior cavity of the mating portion is provided with resilient contact arms.

13. The connector terminal according to claim 1, further comprising an extension section, a conductor crimp portion, and an insulation crimp portion, one end of the extension section being connected to a tail end of the mating portion, the insulation crimp portion being provided at the other end of the extension section, the conductor crimp portion being provided on the extension section, and the conductor crimp portion being located between the insulation crimp portion and the mating portion.

14. An electrical connector comprising a housing and a connector terminal according to any one of claims 1 to 13, the housing being provided with a receiving cavity for insertion of the connector terminal, a stop being provided in an inner wall of the receiving cavity, the abutment section abutting against the stop to limit displacement of the connector terminal in the receiving cavity when the connector terminal is inserted into the receiving cavity.