CN108616004A - a connector terminal - Google Patents

Abstract

The invention provides a connector terminal which comprises a terminal main body, a terminal protective sleeve and a waterproof bolt, wherein the terminal main body comprises a waterproof sealing part, a terminal inserting part formed by forward extending from the waterproof sealing part and a conductor clamping part formed by backward extending from the waterproof sealing part, the waterproof bolt is formed on the waterproof sealing part in an injection molding mode to enable the terminal inserting part and the conductor clamping part to be separated, and the terminal protective sleeve is sleeved outside the terminal inserting part. The invention has simple structure, good waterproofness, convenient wiring, difficult damage when being inserted into a wiring terminal, good contact effect and longer service life.

Description

a connector terminal

technical field

The invention relates to the technical field of electrical components, in particular to a connector terminal.

Background technique

With the development of social economy and the further increase of energy demand, the voice of new energy technology is getting higher and higher. Electric vehicles are driven by power battery packs. After power consumption, the power battery pack needs to be charged. Charging piles or other charging equipment can effectively solve the problem of difficult charging. However, there are many problems with the connector terminals used in car charging sockets on the market. First, the wiring is inconvenient: the fixing method of the cable is troublesome and unstable; second, the connector terminals are in poor contact with the wiring terminals, and the service life Short: When the terminal is inserted into the connector terminal, it is easy to be damaged, deformed, and caught fire after long-term plugging and unplugging; finally, the waterproof performance of the connector terminal is not good, and it is easy to cause short circuit and other dangers in a water environment. Therefore, it is necessary to design a connector terminal to solve the defects of the prior art.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a connector terminal, which not only has good water resistance and is convenient for wiring, but also does not easily cause damage when mated with the terminal, has good contact effect and has a longer service life.

The invention provides the following technical solutions, a connector terminal, including a terminal main body, a terminal protective cover and a waterproof plug, the terminal main body includes a sealed waterproof part, a terminal insertion part extending forward from the sealed waterproof part, and a self- The conductor crimping part formed by the backward extension of the sealing and waterproof part, the waterproof plug is injection-molded on the sealing and waterproof part to separate the terminal insertion part from the conductor crimping part, and the terminal protective sleeve It is arranged outside the terminal insertion part.

Further, the terminal insertion part includes a clamping unit in a hollow structure, the hollow structure runs through the clamping unit and forms an insertion cavity for plugging in electrical terminals; the clamping unit is a valve The clamping unit includes a plurality of independent elastic contact arms, the elastic contact arms form a certain angle with the axis, and the elastic contact arms surround and abut against the insertion cavity The electrical terminals inside.

Further, the front end of the terminal protective cover is provided with a number of window holes, and each of the window holes is provided with a cantilever elastic piece, one end of the cantilever elastic piece is fixed on the terminal protective cover, and the other end is plugged into the terminal. extending in the direction of the part; the front end of the cantilever elastic piece is bent outward to form a protruding contact part, and the protruding contact part abuts on the elastic contact arm.

Preferably, the opening end of the terminal protection sleeve is provided with several inwardly bent and formed mating protection sheets along the circumferential direction, and the bent and formed mating protection sheets wrap the ends of the elastic contact arms.

Further, the terminal inserting part is provided with a positioning hole and a dovetail slot opposite to the positioning hole, and the terminal protective cover is provided with a positioning protrusion matching the positioning hole and a positioning protrusion matching the positioning hole. The barb that matches the dovetail slot; after the terminal protective cover and the terminal insertion part are precisely positioned by the positioning protrusion and the positioning hole, the terminal protection cover and the terminal insertion part pass through The barb is fixedly connected with the dovetail slot.

Further, the sealing and waterproof part includes a sealing ring, and the sealing ring is provided with a plurality of through holes along the circumferential direction, and the inside of the sealing ring is hollow to form a glue injection cavity, and the glue injection cavity is connected with the insertion hole. The connection cavity is connected; the waterproof plug is injection-molded on the periphery of the injection cavity and the sealing ring.

Further, the conductor crimping part includes a sheath crimping part and a wire crimping part; the sheath crimping part includes a pair of first cladding wings, and the top ends of the first cladding wings are inclined to form Two pointed ends; the wire crimping portion includes a pair of second covering wings, and the second covering wings are in a sheet shape; between the first covering wings and between the second covering wings A conductor accommodating groove is jointly formed between them.

Preferably, an anti-fogging stopper protrudes from the conductor crimping portion.

The beneficial effects of the present invention are:

1. Through the mutual combination of the terminal main body and the terminal protective cover, the terminal protective cover protects the terminal main body from plugging, high temperature, pressure resistance, shock resistance, etc., so that the present invention can withstand high temperature and vibration The environment is more stable;

2. In the present invention, through the mutual cooperation between the elastic contact arm in the terminal insertion part and the cantilever shrapnel of the terminal protective cover, the clamping of the electric terminal by the elastic contact arm is flexible, which is conducive to maintaining good contact in strong shock and vibration environments, the protruding contact portion on the cantilever shrapnel abuts on the elastic contact arm, further ensuring that the elastic contact arm is in contact with the elastic contact arm The electrical terminals maintain good contact, improving the working stability of the present invention.

3. The elastic contact arm and the cantilever shrapnel cooperate with each other. The elastic contact arm adopts a long high-conductivity copper elastic arm to release the direct stress contact of the terminal, reduce fatigue and greatly enhance The service life of high-frequency plugging and unplugging; the cantilever shrapnel is made of high-elasticity and temperature-resistant stainless steel, with high tensile strength and short elastic arm, which assists the elastic contact arm to maintain long-term and stable performance in various harsh environments .

4. The end of the clamping unit is flared outwards, and the opening end of the terminal protective sleeve is provided with several inwardly bent and formed mating protection sheets along the circumferential direction, and the mating protection sheets after bending are wrapped The end of the elastic contact arm effectively avoids damage to the elastic contact arm during the mating process of the connecting terminal, effectively prolonging the service life of the present invention.

5. Through the mutual cooperation between the waterproof plug and the sealed waterproof part, it is ensured that even if the present invention is applied in an environment with water, the water source diverted from the terminal insertion part cannot pass through the sealed waterproof part Entering into the conductor crimping part avoids safety problems such as short circuit and improves the safety performance of the present invention.

6. By arranging the first covering wing, the second covering wing and the conductor accommodating groove, a relatively stable and reliable contact effect between the cable and the conductor crimping portion is ensured.

Description of drawings

Figure 1 is an exploded front view of the connector terminal of the present invention;

2 is an exploded rear view of the connector terminal of the present invention;

Fig. 3 is a perspective view of the connector terminal of the present invention;

Fig. 4 is a bottom view of the connector terminal of the present invention;

5 is a perspective view of the terminal body of the present invention;

Fig. 6 is a perspective view of the terminal protection cover of the present invention.

Explanation of reference signs:

Terminal body 1.

Sealing waterproof part 11 , sealing ring 111 , through hole 1111 , glue injection cavity 1112 .

The terminal insertion portion 12 , the clamping unit 121 , the insertion cavity 1211 , the elastic contact arm 1212 , the positioning hole 122 , and the dovetail slot 123 .

The conductor crimping part 13 , the sheath crimping part 131 , the first cladding wing 1311 , the wire crimping part 132 , the second cladding wing 1321 , the conductor accommodating groove 133 , and the anti-fool stopper 134 .

Terminal protection cover 2 , window hole 21 , cantilever elastic piece 22 , raised contact portion 221 , mating protection piece 23 , positioning protrusion 24 , and barb 25 .

Waterproof plug 3.

Detailed ways

In order to make the object, technical solution and technical effect of the present invention clearer, the present invention will be further described below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to FIG. 3 , a connector terminal includes a terminal main body 1, a terminal protective cover 2 and a waterproof plug 3. The terminal protective cover 2 protects the terminal main body 1 from plugging, high temperature, pressure resistance, and shock resistance; preferably Specifically, the material of the terminal main body 1 is copper alloy, and the material of the terminal protective cover 2 is stainless steel. Copper alloy has excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance, and stainless steel has high temperature resistance, corrosion resistance, Enhanced strength, steel deformation is not easy to break and environmental performance, not easy to rust, and has good ductility and toughness, making the present invention more stable in high temperature and vibration environments; it should be understood that the terminal body 1 and the terminal The protective cover 2 can also be made of other materials, which are not intended to limit the specific materials of the terminal body 1 and the terminal protective cover 2 in the present invention. The terminal main body 1 includes a sealed waterproof part 11, a terminal insertion part 12 extending forward from the sealed waterproof part 11, and a conductor crimping part 13 extending backward from the sealed waterproof part 11. The plug 3 is injection-molded on the sealing and waterproof part 11 to separate the terminal insertion part 12 from the conductor crimping part 13 , and the terminal protective cover 2 is sheathed outside the terminal insertion part 12 . Compared with the cumbersome structure of the existing products, the design of the present invention is reasonable, and the terminal body 1, the terminal protective cover 2 and the waterproof plug 3 are combined together, and the weight is lighter and lighter than the existing products 70%. In addition, the cost of production has also been greatly reduced, reducing the use of materials by 60%, which is more conducive to market promotion. The terminal insertion part 12, the sealing and waterproof part 11 and the conductor crimping part 13 are integrated in the terminal main body 1, and the terminal insertion part 12 is convenient for mating contact with the electric terminal, The conductor crimping part 13 is convenient for quick crimping with the cable, the waterproof plug 3 cooperates with the sealing waterproof part 11 to seal the terminal insertion part 12 and the conductor crimping part 13 at intervals, and the mutual structure between the structures The cooperation greatly improves the installation convenience and safety of the present invention.

Referring to FIG. 5 , the terminal insertion part 12 includes a clamping unit 121 in a hollow structure, and the hollow structure runs through the clamping unit 121 and forms an insertion cavity 1211 for inserting electrical terminals; The clamping unit 121 has a petal-shaped structure with its ends flared outwards, and the flared ends of the clamping unit 121 can effectively prevent the terminals from being damaged during the mating process and effectively prolong the service life of the present invention. The clamping unit 121 includes a plurality of independent elastic contact arms 1212, the elastic contact arms 1212 form a certain angle with the axis, and the elastic contact arms 1212 surround and abut against the socket inserted into the insertion cavity 1211 The electrical terminals are described. When the electrical terminal is inserted into the socket cavity 1211, the electrical terminal gradually spreads the clamping unit 121, and the electrical terminal is tightly wrapped by the elastic contact arm 1212, due to the The clamping unit 121 is flexible for clamping the electrical terminals, so it is beneficial to maintain good contact in strong impact and vibration environments.

Referring to Fig. 6, the front end of the terminal protective cover 2 is provided with a plurality of window holes 21, and each of the window holes 21 is provided with a cantilever elastic piece 22, one end of the cantilever elastic piece 22 is fixed on the terminal protective cover 2, and the other One end extends toward the terminal insertion part 12 ; It should be understood that: after the electrical terminal is inserted into the socket cavity 1211, the elastic contact arm 1212 tightly wraps the electrical terminal, and by setting the cantilever elastic piece 22 on the terminal protective cover 2, The protruding contact portion 221 on the cantilever elastic piece 22 abuts against the elastic contact arm 1212, which further ensures that the elastic contact arm 1212 maintains good contact with the electrical terminal, and improves the working performance of the present invention. stability.

It should be understood that the elastic contact arm 1212 and the cantilever spring 22 cooperate with each other, and the elastic contact arm 1212 adopts a longer high-conductivity copper elastic arm to release the direct stress contact of the terminal. Reduce fatigue, the service life can reach more than 10,000 times of plugging and unplugging, and greatly enhance the service life of high-frequency plugging and unplugging; the cantilever shrapnel 22 is made of high-elasticity and temperature-resistant stainless steel, with high tensile strength and short elastic arms. The elastic contact arm 1212 maintains long-term and stable performance under various harsh environments.

Referring to FIG. 4 , the opening end of the terminal protection cover 2 is provided with several inwardly bent and formed mating protection pieces 23 along the circumferential direction, and the bent and formed mating protection pieces 23 wrap the elastic contact arm 1212 end. By setting the mating protection sheet 23, and the mating protection sheet 23 wraps the end of the elastic contact arm 1212, further avoiding the damage of the connecting terminal to the elastic contact arm 1212 during the mating process, effectively Extend the service life of the present invention.

1 and 2, the terminal inserting portion 12 is provided with a positioning hole 122 and a dovetail slot 123 opposite to the positioning hole 122, and the terminal protective cover 2 is provided with the positioning hole 122 The matching positioning protrusion 24 and the barb 25 matching the dovetail slot 123; the terminal protective cover 2 and the terminal insertion part 12 pass through the positioning protrusion 24 and the positioning hole 122 After precise positioning, the terminal protection cover 2 is fixedly connected to the terminal insertion portion 12 through the barb 25 and the dovetail slot 123 . The present invention can not only improve the efficiency of assembly, but also ensure the stability of the overall structure after assembly through the matching of the positioning protrusion 24 and the positioning hole 122 and the barb 25 and the dovetail slot 123 . In order to further improve the reliability and stability of the present invention in the working process, the terminal protection cover 2 is fixed behind the terminal insertion part 12, and laser welding is also used to fix the two, ensuring that the terminal protection cover 2 does not There will be movement and falling off.

Referring to Fig. 5, the sealing and waterproof part 11 includes a sealing ring 111, the sealing ring 111 is provided with a plurality of through holes 1111 along the circumferential direction, and the inside of the sealing ring 111 is hollow to form a glue injection cavity 1112, the The glue injection cavity 1112 communicates with the insertion cavity 1211 ; the waterproof plug 3 is injection molded on the periphery of the glue injection cavity 1112 and the sealing ring 111 . The present invention provides several through holes 1111 in the circumferential direction of the sealing ring 111, which ensures the injection molding of the waterproof plug 3 in the injection cavity 1112 and the injection molding of the outer periphery of the sealing ring 111. The waterproof plug 3 can be integrally formed, which further improves the sealing performance of the product, and ensures that even if the present invention is applied in an environment with water, the water source drained by the terminal insertion part 12 cannot pass through the sealed waterproof The portion 11 enters the conductor crimping portion 13, avoiding safety problems such as short circuit, and improving the safety performance of the present invention.

1 or 3, the conductor crimping portion 13 includes a sheath crimping portion 131 and a wire crimping portion 132; the sheath crimping portion 131 includes a pair of first cladding wings 1311, and the first The top of a cladding wing 1311 is inclined to form two pointed points; the wire crimping portion 132 includes a pair of second cladding wings 1321, and the second cladding wings 1321 are in a sheet shape; A conductor accommodating slot 133 is formed between the wings 1311 and the second wrapping wings 1321 . By providing the first covering wing 1311 , the second covering wing 1321 and the conductor accommodating groove 133 , relatively stable and reliable contact effect between the cable and the conductor crimping portion 13 is ensured.

Preferably, the conductor crimping portion 13 is protruded with an anti-fool stopper 134, which helps the user to find and correct insertion errors in time, and avoids damage to the internal structure of the terminal caused by conductor installation errors.

The use principle of the connector terminal of the present invention is: the cable is installed on the conductor crimping part 13: the cable is placed in the conductor accommodating groove 133, the first covering wing 1311 and the The second cladding wing 1321 presses the sheath and wire of the cable in the conductor accommodating groove 133 respectively; the connector terminal is installed in the car charging socket, and the waterproof plug 3 is snapped into place In the car charging socket; when plugging is required, the electric terminal is inserted into the terminal insertion part 12, and when the electric terminal is inserted into the insertion cavity 1211, the electric terminal gradually The clamping unit 121 is stretched apart, and the electrical terminal is tightly wrapped by the elastic contact arm 1212 to complete the connection.

In summary, the present invention combines the terminal main body, the terminal protective cover and the waterproof plug, and combines the terminal insertion part, the sealing waterproof part and the conductor crimping part Integrated on the terminal body, the mutual cooperation between the terminal protective cover and the terminal insertion part prevents the terminal from being damaged by the elastic contact arm during the mating process, and ensures that the elastic contact The arm is in good contact with the electric terminal; the conductor crimping part ensures a relatively stable and reliable contact effect between the cable and the conductor crimping part; the waterproof plug and the sealing waterproof part ensure that the Even if the invention is applied in an environment with water, the water source drawn in by the terminal insertion part cannot pass through the sealed waterproof part and enter the conductor crimping part, so as to avoid safety problems such as short circuit and improve the performance of the present invention. safety performance.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and changeable, and series of products can be derived. Just making some simple deductions or replacements should be deemed to belong to the patent protection scope of the present invention determined by the submitted claims.

Claims (8)

1. a kind of bonder terminal, including terminal bodies, terminal protection cover and waterproof bolt, it is characterised in that：The terminal bodies The terminal plug division that is extended to form forward including sealing waterproof portion, from the sealing waterproof portion and from the sealing waterproof portion to The conductor clamp-press part extended to form afterwards, the waterproof bolt in the sealing waterproof portion injection molding by the terminal plug division and The conductor clamp-press part is spaced apart, and the terminal protection cover is set in outside the terminal plug division.

2. bonder terminal as described in claim 1, it is characterised in that：The terminal plug division includes in a hollow structure Clamping unit, the hollow structure is through the clamping unit and forms out a grafting chamber for electrical terminals grafting；The folder Tight unit is valvular structure and end is flared out, and the clamping unit includes more independent elastic contact arms, the elasticity Contact arm is at a certain angle with axis, and the elastic contact arm surround and abuts the power connection end being inserted into the grafting chamber Son.

3. bonder terminal as claimed in claim 2, it is characterised in that：The front end of the terminal protection cover is equipped with several windows Hole is respectively provided with a cantilever shrapnel in the fenestra, and one end of the cantilever shrapnel is fixed on the terminal protecting and puts on, the other end Extend to the direction of the terminal plug division；The outside bending in front end of the cantilever shrapnel forms a projection contacts portion, described convex Contact site is played to be connected on the elastic contact arm.

4. bonder terminal as claimed in claim 2, it is characterised in that：The open end of the terminal protection cover is along the circumferential direction Equipped with several moldings that curve inwardly to inserting screening glass, and described pair of slotting screening glass after brake forming wraps up the elastic connecting The end of contact arm.

5. bonder terminal as described in claim 1, it is characterised in that：The terminal plug division be equipped with location hole and The dovetail card slot being oppositely arranged with the location hole, the terminal protecting are put on equipped with the convex to match with the location hole Block and the barb to match with the dovetail card slot；The terminal protection cover passes through the positioning with the terminal plug division After convex block is accurately positioned with the location hole, the terminal protection cover passes through the barb and the swallow with the terminal plug division Tail card slot is fixedly connected.

6. bonder terminal as claimed in claim 2, it is characterised in that：The sealing waterproof portion includes sealing ring, described close Seal ring along the circumferential direction runs through through-hole equipped with several, and the inner hollow of the sealing ring is formed with a glue injection cavities, described Glue injection cavities connect with the grafting chamber；Periphery injection molding of the waterproof bolt in the glue injection cavities and the sealing ring.

7. bonder terminal as described in claim 1, it is characterised in that：The conductor clamp-press part includes sheath clamp-press part and leads Wire clamp splenium；The sheath clamp-press part includes that a pair first coats the wing, and the top of the first cladding wing tilts, and forms two A tip；The conducting wire clamp-press part includes that a pair second coats the wing, and described second coats wing shape in the form of sheets；First packet It covers and a conductor storage tank has been collectively formed between the second cladding wing between the wing.

8. bonder terminal as claimed in claim 7, it is characterised in that：The conductor clamp-press part, which protrudes above, to be provided with fool proof and stops Stopper.