TWI400845B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector for network connection.

Usually, electronic devices with network communication functions (such as computers, servers, etc.) have an electrical connector suitable for network connection, such as an RJ45 connector. In the ninth figure, a common RJ45 connector includes an insulating body 10' and a plurality of conductive terminals 20' housed in the insulating body, wherein the insulating body is provided with a peripheral wall, a mating cavity 11' surrounded by the peripheral wall, and A mating connector is inserted into the pair of interfaces in the docking cavity. The conductive terminal 20 ′ is provided with a horizontal holding portion 21 ′, and the contact portion 22 ′ that extends from the horizontal holding portion to the front end of the pair of interfaces and extends into the mating cavity 11 ′ and the rear end of the horizontal holding portion is bent to extend the insulating body. a terminal tail portion 23' of the rear wall, wherein the contact portion 22' is formed by being folded back 180 degrees from the front end of the horizontal holding portion 21' and then extending obliquely into the mating cavity 11' in a direction deviating from the horizontal holding portion 21'. It forms a certain angle with the horizontal holding portion 21' to maintain good elasticity and dock with the mating connector.

The structure of the contact portion and the holding portion of the conductive terminal is a structure conventionally used in the industry. However, there are still some defects in actual manufacturing and application. For example, the conductive terminal has several bends, so The molding process requires multiple press forming, which inevitably increases the manufacturing process and manufacturing costs, and also Adding difficulty and complexity to the molding process, the size of the contact portion is not easy to grasp, and it is likely that the contact portions are not aligned in the angle and direction; more importantly, the contact portion of the conductive terminal is self-aligned The front end of the horizontal holding portion is bent at 180 degrees and then obliquely extended. Therefore, when the contact portion is butted against the mating connector, the contact portion will be pressed and will gather at a bend connected to the front end of the horizontal holding portion. After being inserted and removed several times with the mating connector, the stress is easily strained at the bend and the contact portion of the conductive terminal is pressed, making it difficult to rebound and recovering elasticity. In severe cases, the conductive terminal is likely to break. The phenomenon.

In view of the above problems, it is necessary to provide a new electrical connector to solve the above problems.

One of the technical problems solved by the present invention is to provide an electrical connector that can enhance the mating force of the terminal in the docking process, reduce the difficulty in forming the terminal, and effectively improve the service life of the terminal.

In order to solve the above technical problem, the present invention adopts the following technical solution: an electrical connector includes an insulative housing and a plurality of terminals received in the insulative housing, the insulative housing is provided with a receiving cavity for receiving a pair of electrical connectors, and a through hole The receiving cavity and the latch of the mating electrical connector and the pair of interfaces through which the mating electrical connector passes, the terminal is provided with a horizontal retaining portion held by the insulating body and a front end of the self-holding portion is inclined toward the opposite interface An extended contact arm, the contact arm being provided with a free end that abuts when the docking electrical connector is not inserted into the receiving cavity The insulative housing is detached from the insulative housing when the mating electrical connector is inserted into the receiving cavity. Compared with the prior art, the free end of the terminal of the electrical connector provided by the technical solution has a pre-stress due to being resisted before docking with the docking electrical connector, thereby enhancing the docking force of the terminal during the docking process.

As a further improvement of the present invention, the holding portion of the terminal is horizontally disposed, and the contact arm extends obliquely from the holding portion toward one end of the interface toward the opposite interface into the receiving cavity. Compared with the prior art, the contact arm and the holding portion have a simple structure and an easy process.

As a further improvement of the present invention, the terminal contact arm is provided with a bending arm extending obliquely at one end of the pair of interfaces, and the free end is formed on the bending arm. Compared to the prior art, the bending arm is used to extend toward the insulating body and abut its free end against the insulating body.

As a further improvement of the present invention, the terminal is L-shaped and includes a tail portion of the self-holding portion that extends perpendicularly away from one end of the pair of interfaces. Compared with the prior art, the terminal structure is simple and the process is convenient.

In order to solve the above technical problem, the present invention can also adopt the following technical solution: an electrical connector includes an insulative housing and a plurality of terminals received in the insulative housing, the insulative housing is provided with a pair of oppositely disposed side walls, a pair of oppositely disposed An end wall, a pair of receiving cavity formed by the side wall and the end wall, and a pair of interfaces on a side opposite to the receiving cavity, wherein one of the opposite end walls is provided with the pair of receiving cavity and the pair a card slot of the interface, the end wall is provided with a receiving slot for receiving the terminal, and a step portion protruding into the receiving slot, the terminal is fixed on the terminal a horizontal retaining portion on the insulative housing and a front end of the self-retaining portion extend obliquely toward the pair of interfaces into the contact arm in the pair of receiving cavities, the contact arm being provided with a freedom to be resisted by the step portion to be displaced toward the receiving cavity End. Compared with the prior art, the free end of the terminal of the electrical connector provided by the technical solution has a pre-pressure due to the resistance of the step portion to the displacement of the receiving cavity before the butt joint of the electrical connector is docked, and the terminal is strengthened. The docking force in the process.

As a further improvement of the present invention, the end wall is provided with a through hole penetrating downwardly through the receiving groove and the receiving cavity for the free end of the contact arm to be displaced therein. Compared with the prior art, the contact arm can be displaced in the through hole to provide greater elastic deformation and enhance the elastic force.

As a further improvement of the present invention, the free end of the contact arm extends into the receiving groove and abuts against the step portion, and the step portion is disposed between the free end and the pair receiving cavity. Compared to the prior art, the step prevents the free end from being displaced toward the receiving cavity.

As a further improvement of the present invention, the terminal extends in a direction toward the pair of interfaces in the receiving groove of the pair of receiving cavities and the terminals. Compared with the prior art, the terminal is simple to form, the stress is relatively dispersed, and the service life is long.

Another technical problem to be solved by the present invention is to provide an electrical connector that has good strength and is not easily damaged during the docking process.

In order to solve the above technical problem, the present invention adopts the following technical solution: an electrical connector includes an insulating body, a terminal received in the insulating body, a shielding shell covering the surface of the insulating body, and being held on the insulating body. Fastener, The insulative housing is provided with an end wall, and the end wall is provided with a bayonet and a receiving portion on both sides of the bayonet. The fixing member is received in the receiving portion and is provided with a metal block extending into the bayonet. Stop.

As a further improvement of the present invention, the insulative housing is provided with a bottom surface, a top surface and a mounting surface for mounting on a circuit board, the mounting surface being disposed between the top surface and the bottom surface.

As a further improvement of the present invention, the metal stopper of the fixing member is integrally stamped and used for snapping with a pair of electrical connectors.

As a further improvement of the present invention, the insulative housing is provided with a pair of receiving cavities for receiving the mating electrical connectors, and the bayonet is connected to the pair of receiving cavities.

As a further improvement of the present invention, the fixing member is further provided with a horizontal base and a holding portion extending perpendicularly from one side of the horizontal base and being held in the end wall of the insulating body.

As a further improvement of the present invention, the metal stopper is provided on the other side of the horizontal base.

Compared with the prior art, the electrical connector provided by the technical solution has a stopper made of a metal material, which effectively enhances the strength of the electrical connector during the docking process and is not easily damaged.

As shown in the first to eighth figures, the present invention provides an electrical connector for network connection, which is mounted on a circuit board (not shown) and can be connected to a pair of terminals. The connectors (not shown) are docked in the docking direction. The electrical connector includes an insulative housing 100, a plurality of terminals 200 received in the insulative housing 100, a shielding housing 300 overlying the outer surface of the insulative housing 100, and a pair of mounting members 400, in a preferred embodiment of the invention. The electrical connector is a "sink-type" electrical connector, that is, the electrical connector is not entirely located on the mounting surface of the circuit board, but has a partial structure lower than the mounting surface of the circuit board, thereby Reduce the height of the electrical connector after it is mounted on the board.

As shown in the second and third figures, the insulative housing 100 is provided with a mating surface 101 facing the mating direction, a pair of left and right opposite side walls 102, a pair of upper and lower opposite end walls 103, and the side walls 102 and ends. The wall 103 is joined to the wall 104 and the pair of receiving pockets 105 surrounded by the side walls 102, the end walls 103, and the rear wall 104. The abutting surface 101 and the rear wall 104 are disposed forward and backward, and a pair of interfaces 106 are formed through the pair of receiving pockets 105 for the mating electrical connector to pass through and into the pair of receiving pockets 105. The outer surface of the left and right side walls 102 protrudes from a latching portion 107 that cooperates with the shielding case 300. The end wall 103 includes an upper end wall and a lower end wall, wherein the lower end wall is provided with a bayonet 108 disposed in abutting direction and penetrating the pair of interfaces 106, the bayonet 108 penetrating through the inner and outer surfaces of the lower end wall and The receiving cavity 105 is continuous, and the lower end wall is provided with a receiving portion 109 on both sides of the bayonet 108 for receiving the fixing member 400. The inner surface of the upper end wall is provided with a plurality of terminals extending to the rear wall 104. a receiving slot 110, the terminal receiving slot 110 extends through the insulating body rear wall 104 from the front to the rear, and the outer surface of the upper end wall is open to the terminal receiving slot The through hole 111 of the 110 is formed by the removal of the mold core (not shown) during the injection molding process of the insulating body, and the through hole 111 is also adapted to elastically displace the terminal 200 after the docking. , maintain good flexibility. As shown in the fourth and fifth figures, the insulative housing at the front end of the terminal receiving slot 110 is provided with a step portion 112 protruding into the terminal receiving slot 110 and the through hole 111. The step portion 112 Adjacent to the pair of interfaces 106 and extending rearwardly horizontally, it can resist the terminal 200 in the vertical direction and limit the upward displacement of the terminal 200. The rear wall 104 of the insulative housing 100 is provided with a plurality of T-shaped slots 113 corresponding to the terminal receiving slots 110, a positioning spacer 114 disposed under the T-shaped slots 113, and a mounting surface 115 at both ends of the positioning spacer 114. The T-shaped slot 113 extends from the top to the bottom of the rear wall 104 for inserting and holding the terminal 200, and the positioning barrier 114 is used to position the terminal 200. The mounting surface 115 is mounted on the mounting surface of the circuit board. The mounting surface 115 of the insulating body is higher than the bottom surface 116 of the lower end wall of the insulating body in the vertical direction, that is, the mounting surface 115 is located on the top surface 117 of the insulating body. Between the bottom surfaces 116, the lower end wall of the insulating body will be lower than the mounting surface of the circuit board, thus reducing the height of the electrical connector on the board mounting surface, in line with the trend of miniaturization of the electrical connector. Of course, the mounting surface 115 may be formed on the positioning barrier 114 or directly on the lower surface of the positioning barrier 114 as a mounting surface for mounting with the circuit board, and details are not described herein.

As shown in the second figure, the terminal 200 is L-shaped, and is received in the terminal receiving slot 110 and arranged in a row. The terminal includes a T-shaped slot. The horizontal holding portion 201 in the 113, the front end of the self-holding portion 201 protrudes downwardly into the contact arm 202 in the receiving cavity 105 and the tail portion 205 extending vertically downward from the rear end of the holding portion 201. The downwardly inclined contact arm 202 is provided at its front end with a bending arm 203 extending away from the step portion 112, and the bending arm 203 extends obliquely upward into the terminal receiving slot 110, that is, the The contact arm 202 extends downwardly from the terminal receiving slot 110 and then extends obliquely upward into the terminal receiving slot 110. The lowest point formed thereby constitutes the contact point of the contact arm 202. The free end 204 of the bending arm 203 extends into the terminal receiving groove 110 and abuts against the step portion 112. Thus, the step portion 112 is disposed at the free end 204 and the receiving cavity. Between the 105s, the free end 204 is blocked from being displaced toward the receiving cavity 105. As shown in the fourth and fifth figures, when the docking electrical connector is not inserted into the receiving cavity 105, the free end 204 will There is a downward pre-pressure against the step 112 of the insulative housing, and when the mating electrical connector is inserted into the pair of receiving pockets 105, the free end 204 will be displaced upwardly within the through-hole 111 Abutting against the step portion 112. The tail portion 205 is fixed on the rear wall 104 of the insulating body and arranged along the positioning barrier 114. The tail portion 205 of the plurality of terminals is provided with welding legs, and the welded legs are formed into two groups 206, 207, one of which The set of welded legs 207 are offset rearwardly from the other set of welded legs 206, thereby forming two rows of welded legs.

The shielding shell 300 is integrally stamped from metal and assembled from the front to the rear on the insulating body. The shielding shell 300 includes a cover 301 before the front end surface 101 of the insulating body, and is bent backward from the left and right sides of the front cover 301. The side cover 304, the horizontal lower cover 302 covering the lower end wall 103 of the insulating body, and the ear portion 303 vertically bent upward from the left and right sides of the horizontal lower cover 302. The front cover 301 has a shape corresponding to the front end surface 101 of the insulative housing, and is provided with a frame opening 305 corresponding to the pair of interfaces 106. The lower cover 302 is provided with a notch 306 corresponding to the bayonet 108 of the lower end wall, and the lower cover 302 and the receiving portion 109 on both sides of the bayonet 108 form a space for receiving the fixing member 400. . The ear portion 303 and the side cover 304 are engaged with the holding portion 107 on the left and right side walls 102 of the insulating body. The shielding shell 300 does not cover the outer surface of the upper end wall of the insulating body, so that the through hole 111 on the upper end wall penetrates with the outside.

The fixing member 400 is composed of two pieces, which are respectively stamped from a metal material and respectively disposed on both sides of the bayonet 108. The fixing member 400 is received between the receiving portion 109 and the lower cover 302, and includes a horizontal base portion 401, and a retaining portion 402 extending vertically upward from the horizontal base portion 401 and inserted into the lower end wall 103 of the insulating body. And a stop portion 403 extending horizontally from the other side of the horizontal base 401 into the insulative housing bayonet 108. The blocking portion 403 will clamp the mating electrical connector after the mating electrical connector is inserted into the receiving cavity 105, and block the docking electrical connector from coming out of the pair of receiving pockets 105, thereby enhancing the holding force after docking. The stopper portion 403 has a higher strength than the plastic stopper portion of the prior art, and is not easily broken in the case where the docking electrical connector is frequently inserted and removed. Of course, the fixing member can also form a one-piece structure, as shown in the seventh figure and the eighth figure, which includes two oppositely disposed stopping portions 403, and the one-piece fixing member also has two The technical effect of the chip fixing member will not be described here.

As shown in the fourth and fifth figures, the terminal 200 is horizontally inserted into the terminal receiving groove 110 from the rear wall 104 of the insulating body, wherein the contact arm 202 of the terminal passes through the assembly. The T-shaped groove 113 enters the pair of receiving pockets 105, and when the free end 204 is displaced below the through hole 111, it will be lifted up above the step portion 112, at which time the free end 204 will Pressing down on the step portion 112, there is a pre-pressure, the step portion 112 carrying the pressure from the free end 204 upward, restricting the downward displacement of the terminal free end 204, and increasing due to the presence of the pre-pressure The docking force when the terminal is docked with the docking electrical connector also enables the entire terminal to be stably held in the insulating body, thereby avoiding the shaking of the contact arm 202, thereby ensuring that the contact arms 202 of the terminal are flush with each other, and at the same time, due to the terminal 200 can be formed by a simple stamping process, which reduces the difficulty and complexity of manufacturing; in addition, the terminal 200 always faces the pair in the receiving cavity 105 and the receiving groove 110 of the terminal. The direction of the interface 106 extends, and the contact arm 202 of the terminal does not need to be bent by 180 degrees. Therefore, the stress generated on the terminal 200 when the docking electrical connector is docked is relatively dispersed, thereby preventing the terminal 200 from being crushed or being fatigued due to stress fatigue. The phenomenon of lowering the elasticity and the like can improve the service life of the terminal. In addition, the terminal structure of the electrical connector of the present invention has other advantages over the prior art terminals. For example, the terminal is shortened by 180 degrees and the length of the terminal is shortened, which is advantageous for reducing the material resistance, and the terminal is in the receiving cavity. The occupied space in 105 is small, which is in line with the trend of miniaturization of electrical connectors.

It should be particularly noted that in the specific embodiment of the present invention, only the electrical connector is taken as an example, and any type of electrical connector is applicable to the principles disclosed in the present invention in practical applications. Equivalent variations of the invention, which are within the scope of the invention, are intended to be included within the scope of the invention as claimed.

100‧‧‧Insulated body

101‧‧‧ docking

102‧‧‧ side wall

103‧‧‧End wall

104‧‧‧ Back wall

105‧‧‧With receiving cavity

106‧‧‧Interface

107‧‧‧Keeping Department

108‧‧‧ bayonet

109‧‧‧ Housing Department

110‧‧‧ receiving trough

111‧‧‧through hole

112‧‧‧Steps

113‧‧‧T-slot

114‧‧‧ Positioning barrier

115‧‧‧Installation surface

116‧‧‧ bottom surface

117‧‧‧ top surface

200‧‧‧ terminals

201‧‧‧ Holding Department

202‧‧‧Contact arm

203‧‧‧Folding arm

204‧‧‧Free end

205‧‧‧ tail

206, 207‧‧‧ welding legs

300‧‧‧Shaded housing

301‧‧‧ front cover

302‧‧‧Under the cover

303‧‧ Ears

304‧‧‧ side cover

305‧‧‧ frame

306‧‧ ‧ gap

400‧‧‧Fixed parts

401‧‧‧ horizontal base

402‧‧‧ Holding Department

403‧‧‧stops

The first drawing is a perspective assembled view of the electrical connector of the present invention; the second drawing is an exploded perspective view of the electrical connector of the present invention; and the third drawing is an exploded perspective view of another angle of the electrical connector of the present invention; A cross-sectional view of the electrical connector terminal of the present invention inserted into the insulative housing; the fifth drawing is a cross-sectional view of the electrical connector terminal of the present invention inserted into the insulative housing; and a sixth perspective view of the electrical connector of the present invention at another angle, showing The assembly relationship between the terminal and the rear wall of the insulating body, the number of terminals is only schematic; the seventh figure is a three-dimensional combination diagram of the one-piece fixing member of the electrical connector of the present invention; the eighth figure is a one-piece fixing of the seventh connector of the electrical connector A bottom view of the piece; the ninth view is a cross-sectional view of the prior art electrical connector.

100‧‧‧Insulated body

101‧‧‧ docking

102‧‧‧ side wall

103‧‧‧End wall

104‧‧‧ Back wall

105‧‧‧With receiving cavity

106‧‧‧Interface

107‧‧‧Keeping Department

108‧‧‧ bayonet

109‧‧‧ Housing Department

110‧‧‧ receiving trough

111‧‧‧through hole

112‧‧‧Steps

113‧‧‧T-slot

114‧‧‧ Positioning barrier

115‧‧‧Installation surface

116‧‧‧ bottom surface

117‧‧‧ top surface

200‧‧‧ terminals

201‧‧‧ Holding Department

202‧‧‧Contact arm

203‧‧‧Folding arm

204‧‧‧Free end

205‧‧‧ tail

206, 207‧‧‧ welding legs

300‧‧‧Shaded housing

301‧‧‧ front cover

302‧‧‧Under the cover

303‧‧ Ears

304‧‧‧ side cover

305‧‧‧ frame

306‧‧ ‧ gap

400‧‧‧Fixed parts

401‧‧‧ horizontal base

402‧‧‧ Holding Department

403‧‧‧stops

Claims (14)

An electrical connector includes: an insulative housing; a receiving cavity for receiving a pair of electrical connectors; a card opening extending through the receiving cavity and holding the mating electrical connector; and a pair of the docking electrical connector The interface is provided in the insulating body, and the terminal is provided with a horizontal holding portion that is fixed to the insulating body and a contact arm extending obliquely from the front end of the holding portion toward the pair of interfaces; wherein the contact arm is provided with a free And the free end abuts against the insulative housing when the mating electrical connector is not inserted into the receiving cavity, and the free end is disengaged from the insulative housing after the mating electrical connector is inserted into the receiving cavity. The electrical connector of claim 1, wherein the retaining portion of the terminal is horizontally disposed, and the contact arm extends obliquely from the retaining portion toward the opposite end of the pair of interfaces into the receiving cavity. The electrical connector of claim 1, wherein the terminal contact arm is provided with a bent arm extending obliquely at one end of the pair of interfaces, and the free end is formed on the bending arm. The electrical connector of claim 1 or 2 or 3, wherein the terminal is L-shaped and includes a tail portion of the self-holding portion that extends perpendicularly away from one end of the pair of interfaces. An electrical connector includes: an insulative housing having a pair of oppositely disposed side walls, a pair of oppositely disposed end walls, a pair of receiving holes formed by the side wall and the end wall and a pair of interfaces on a side of the receiving cavity, wherein one of the opposite end walls is provided with a bayonet penetrating the pair of receiving cavity and the pair of interfaces The plurality of terminals are received in the insulating body; wherein the end wall is provided with a receiving groove for receiving the terminal and a step portion protruding into the receiving groove, the terminal is provided with a level held on the insulating body The retaining portion and the front end of the self-holding portion extend obliquely toward the pair of interfaces into the contact arm in the pair of receiving cavities. The contact arm is provided with a free end that is resisted by the step portion and cannot be displaced into the receiving cavity. The electrical connector of claim 5, wherein the end wall is provided with a through hole extending downwardly through the receiving groove and the receiving cavity, wherein the free end of the contact arm is displaced therein. The electrical connector of claim 5, wherein the free end of the contact arm extends into the receiving groove and abuts against the step portion, the step portion is disposed at the free end Between the receiving chambers. The electrical connector of claim 5, wherein the terminal extends in a direction toward the pair of interfaces in the receiving groove of the pair of receiving pockets and the terminal. An electrical connector comprising: an insulative housing having an end wall; a plurality of terminals received in the insulative housing; and a shielding housing covering the insulative housing; The fixing member is fixed on the insulating body; wherein the end wall is provided with a bayonet and a receiving portion on both sides of the bayonet, the fixing member is received in the receiving portion and is provided to extend into the bayonet Metal stop. The electrical connector of claim 9, wherein the insulative housing is provided with a bottom surface, a top surface, and a mounting surface for mounting on a circuit board, wherein the mounting surface is disposed on the top surface Between the bottom surfaces. The electrical connector of claim 9, wherein the metal blocking portion of the fixing member is integrally stamped and used for snapping with a pair of electrical connectors. The electrical connector of claim 11, wherein the insulative housing is provided with a pair of receiving receptacles for receiving the mating electrical connectors, the bayonet being connected to the pair of receiving receptacles. The electrical connector of claim 11, wherein the fixing member is further provided with a horizontal base and a holding portion extending perpendicularly from one side of the horizontal base and held in the end wall of the insulating body. The electrical connector of claim 13, wherein the metal stop is disposed on the other side of the horizontal base.