CN117767062A - Electric connection device - Google Patents

Abstract

An electrical connection device comprises a wire end connector, a board end connector and an elastic buckle. The wire end connector comprises an insulating shell, a circuit board, a cable, a locking piece and a pull belt. The insulating shell is provided with two protection walls, and each protection wall is provided with an anti-falling part. The locking piece is provided with a fixing section, a locking section and a connecting section. The board-end connector comprises an insulating base, a plurality of terminals and a metal shell. The metal shell has two flaps. The elastic buckle is provided with two pivoting rods which are respectively pivoted with the folded plates and a buckling rod which is used for buckling and pressing the folded plates on the protection walls. When the line end connector is in butt joint with the board end connector, the circuit board is inserted into the slot, the protruding part is buckled with the buckling hole, and the buckling rod can pass through the anti-falling part to buckle on a plurality of protection walls.

Description

Electric connection device

Technical Field

The present invention relates to an electrical connection device, and more particularly, to an electrical connection device with a locking and unlocking structure.

Background

A wire end connector of the conventional electrical connection device is generally snapped into two snap holes of a board end connector by two protrusions of a snap fastener, respectively, so as to be combined and locked on the board end connector. The line end connector and the board end connector are affected by factors of manufacturing tolerance and assembly tolerance, so that a gap is generated between each protruding part and a surrounding surface of the board end connector, which is used for defining the buckling hole when the protruding part is buckled with the corresponding buckling hole. The gap may cause the line-end connector to easily shake or even rotate relative to the board-end connector, so that the line-end connector is not well-secured to the board-end connector, thereby affecting the stability of electrical signal transmission. Such as the connector disclosed in chinese patent publication No. CN 207038836U.

Disclosure of Invention

It is therefore an object of the present invention to provide an electrical connection device which overcomes at least one of the drawbacks of the prior art.

Thus, the electrical connection device of the present invention comprises a wire end connector, a board end connector, and an elastic buckle.

The wire end connector comprises an insulating shell, a circuit board, at least one cable, a locking piece and a pull belt. The insulating shell is provided with a holding groove, and is provided with two protection walls respectively positioned at the opposite sides of the holding groove, and each protection wall is provided with an anti-falling part. The circuit board is arranged on the insulating shell. The cable is electrically connected to one side of the circuit board. The locking piece is provided with a holding section arranged in the holding groove, a locking section extending from the holding section and spaced from the insulating shell, and a connecting section extending from the locking section, wherein the locking section is provided with a protruding part. The pull belt is provided with a connecting belt body connected with the connecting section of the locking piece and a holding belt body. The board-end connector comprises an insulating base, a plurality of terminals and a metal shell. The insulating base is provided with a slot for plugging the circuit board. A plurality of terminals are arranged on the insulating base, and each terminal is provided with a contact part extending into the slot. The metal shell is sleeved on the insulating seat, and one side of the metal shell is provided with two folded plates which extend outwards and are parallel to each other, and a buckling hole for buckling the protruding part. The elastic buckle is provided with two pivoting rods which are pivoted on the folded plates respectively, and a buckling rod which is connected with the pivoting rods and is used for buckling and pressing the protection walls. When the line end connector is in butt joint with the board end connector, the circuit board is inserted into the slot, the protruding part is buckled with the buckling hole, and the buckling rod of the elastic buckle can pass through the anti-falling part to buckle the elastic buckle on a plurality of protection walls.

In some embodiments, each of the flaps has a pivot hole, and each of the pivot rods has a pivot rod body pivotally connected to the pivot hole of the corresponding flap.

In some embodiments, the insulating base has two stoppers, each of which is used for preventing the pivot rod body of the corresponding pivot rod from being separated from the corresponding pivot hole.

In some embodiments, each of the stoppers has a stop block located outside the corresponding folded plate, each of the pivoting bars further has a side bar body connected between the buckling bar and the pivoting bar body, the side bar body is interposed between the corresponding folded plate and the corresponding stop block, and the stop block corresponds to the position of the corresponding pivoting bar body and is used for stopping the outside of the corresponding side bar body.

In some embodiments, each of the stoppers further has a limiting block extending inward from an inner side of the stopper body, the limiting block being located on a rotation path of the corresponding side lever body for stopping the corresponding side lever body.

In some embodiments, the insulating base has two stoppers, each of which has a limit block located on the rotation path of the corresponding pivoting lever for stopping the corresponding pivoting lever.

In some embodiments, the insulating base is formed with a mounting space between the plurality of stoppers, the mounting space accommodating a plurality of flaps and a portion of each of the pivoting bars.

In some embodiments, the insulating housing has a main body portion with an end surface, the end surface is formed with an opening, and the circuit board is disposed on the main body portion and partially extends out of the opening.

In some embodiments, the insulating housing further has a docking portion extending from the end surface, and a docking space is formed between the metal shell and the insulating base for docking the docking portion.

In some embodiments, the insulating housing further has two side portions extending from the end surface, and a gap is formed between each side portion and the abutting portion for the metal shell to be inserted.

In some embodiments, the holding section of the latch has an end, and the insulating housing further has a resilient latch arm disposed in the holding slot, the resilient latch arm latching the end to prevent the latch from being separated from the insulating housing.

In some embodiments, the board-end connector further includes an insulation body disposed in the insulation base and through which the plurality of terminals pass.

In some embodiments, the wire end connector includes a plurality of wires electrically connected to opposite sides of the circuit board, and a cover for covering the electrical connection between the circuit board and the plurality of wires.

In some embodiments, each of the protection walls further has a wall end surface for the buckling rod to buckle, and the anti-falling portion is a protruding structure protruding from the wall end surface for blocking the buckling rod buckled on the wall end surface.

In some embodiments, each of the protection walls further has a wall surface perpendicular to the wall end surface, the retaining portion is adjacent to the wall surface and has an arc surface connected between the wall end surface and the wall surface, and the arc surface is configured to contact the buckling rod and allow the buckling rod to slide thereon, so that the buckling rod can pass over the retaining portion and buckle on the wall end surface.

In some embodiments, the protruding structure is semi-cylindrical and extends axially along the width direction of the corresponding protection wall.

In some embodiments, the drawstring is configured to push the buckling bar away from the plurality of protective walls by tension when pulled.

In some embodiments, the pull strap is configured to pull the pressing rod of the elastic buckle to separate from the protection walls and the protrusion of the locking piece to separate from the fastening hole.

In some embodiments, the elastic buckle can rotate between a locking position and an unlocking position relative to the board end connector, when the elastic buckle is in the locking position, the elastic buckle is vertical, the buckling rod is elastically buckled on a plurality of protection walls and is blocked by the anti-falling part, the connecting belt body connected to the holding belt body is bent, when the elastic buckle is in the unlocking position, the elastic buckle is inclined, the buckling rod is moved away from a plurality of protection walls, and the connecting belt body is vertical.

The invention has at least the following effects: the buckling rods of the elastic buckle are used for applying elastic force to buckle the end faces of a plurality of walls, so that the line end connector can be tightly and firmly combined with the board end connector. The elastic buckle and the locking buckle can be unlocked by pulling one operation step of the pull belt, so that the convenience in operation and use can be improved. Through the design of a plurality of check blocks, the effect of preventing a plurality of pin joint rod bodies of the elastic buckle from being separated from a plurality of pin joint holes respectively so as to improve the combination stability can be achieved, and the effect of limiting the elastic buckle at the unlocking position can be achieved. Through the design of a plurality of anticreep portions, can play the effect that the buckling and pressing pole of propping this elasticity fastener makes its deformation and accumulate reset elasticity, can also play the effect that keeps off this buckling and pressing pole makes this elasticity fastener firmly fix a position in this hasp position.

Drawings

Other features and advantages of the invention will be apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is an exploded perspective view of a first embodiment of the electrical connection device of the present invention illustrating the connection relationship among a wire end connector, a board end connector and a resilient clip;

fig. 2 is an exploded perspective view of the line end connector of the first embodiment;

fig. 3 is a bottom view of the line end connector of the first embodiment;

FIG. 4 is an exploded perspective view of the wire end connector and the elastic buckle of the first embodiment;

FIG. 5 is a top view of the wire end connector and the elastic buckle of the first embodiment;

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5, illustrating the resilient buckle in an unlocked position;

FIG. 7 is a fragmentary cross-sectional view of the first embodiment;

FIG. 8 is a fragmentary cross-sectional view of the first embodiment;

FIG. 9 is a fragmentary cross-sectional view of the first embodiment illustrating the resilient clip in a latched position;

fig. 10 is a front view of the first embodiment;

FIG. 11 is a fragmentary sectional view of the first embodiment illustrating a drawstring driving the elastic buckle to unlock;

FIG. 12 is a fragmentary sectional view of the first embodiment illustrating the pull strap driving a latch for unlatching;

fig. 13 is a fragmentary exploded perspective view of the line end connector of the second embodiment of the electrical connection device of the present invention; and

Fig. 14 is a fragmentary perspective view of the line end connector of the second embodiment.

The reference numerals are as follows:

100 electrical connection device

1 wire end connector

11 insulating housing

110 main body part

111 butt joint

112 protective wall

113 side portions

114 end face

115 opening

116, holding groove

117 wall surface

118 wall end face

119 wall surface

120 drop-proof part

121 arc surface

122 gap(s)

123 elastic buckling arm

13 Circuit board

14 Cable (wire)

15 coating body

16 locking piece

161 holding section

162 latch segment

163 connecting section

164 projection

165 connecting hole

166 end portion

17 draw tape

171 connecting belt body

172 hand-hold belt body

173 connecting portion

174 extension part

2 board end connector

21 insulating base

210, seat body

211 wall body

212 mounting groove

213 installation space

214 stop block

215 stop block body

216 spacing block

217 slot

22 insulating body

23 terminal

231 contact portion

24:metal shell

241 surrounding plate

242 plug board

243 folding plate

244 button hole

245 pivot hole

25 butt joint space

3 elastic buckle

31 pivoting lever

311 side lever body

312 pin joint rod body

32, withhold the pole

M: docking direction

P pulling direction

R1 first rotation direction

R2 second direction of rotation

D1 first direction

D2, second direction

D3 third direction

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are denoted by the same reference numerals.

Referring to fig. 1, a first embodiment of the electrical connection device 100 of the present invention includes a terminal connector 1, a board terminal connector 2, and an elastic buckle 3.

For convenience of description, a first direction D1 of the electrical connection device 100, a second direction D2 perpendicular to the first direction D1, and a third direction D3 perpendicular to the first direction D1 and the second direction D2 are defined. In the first embodiment, the first direction D1 is exemplified as the front-rear direction, and the direction indicated by the arrow in fig. 1 is the front and the reverse direction is the rear. The second direction D2 is exemplified by the left-right direction, and the direction indicated by the arrow in fig. 1 is left and the reverse direction is right. The third direction D3 is, for example, the up-down direction, and the direction indicated by the arrow in fig. 1 is up and down in the opposite direction.

Referring to fig. 1, 2 and 3, the wire end connector 1 includes an insulating housing 11, a circuit board 13, a plurality of cables 14, a cover 15, a locking member 16, and a pull tape 17. The insulating housing 11 has a main body 110, a butt joint 111, two protection walls 112, and two side portions 113. The body portion 110 has a downwardly facing end surface 114. The end face 114 defines an opening 115. The abutment 111 extends downwardly from the end face 114. The abutting portion 111 is shaped like a wall and surrounds the periphery of the opening 115. The front side of the main body 110 and the front side of the abutting portion 111 together define a holding slot 116 for accommodating the locking member 16, and a wall 117 located at the rear side of the holding slot 116. A plurality of protection walls 112 extend forward from the front side of the main body 110 and are respectively located at the left and right opposite sides of the holding groove 116. The width direction of each of the protection walls 112 extends along the second direction D2. Each of the protection walls 112 has an upwardly facing wall surface 118, a wall surface 119 facing forward and perpendicular to the wall surface 118, and a drop-preventing portion 120 disposed on the wall surface 118. The anti-releasing portion 120 is a protruding structure protruding from the wall surface 118. In the first embodiment, the anti-falling portion 120 is adjacent to the wall surface 119 and has an arc surface 121 connected between the wall end surface 118 and the wall surface 119. Specifically, the protruding structure is semi-cylindrical and extends along the width direction of the corresponding protection wall 112 in the axial direction. The side portions 113 extend downward from the end surface 114 of the main body 110 and are located on opposite sides of the abutting portion 111. A gap 122 is formed between each of the side portions 113 and the abutting portion 111.

The circuit board 13 is disposed on the main body 110 of the insulating housing 11 and partially extends out of the opening 115. The cables 14 are electrically connected to opposite sides of the circuit board 13. The coating body 15 is used for coating the electrical connection between the circuit board 13 and the plurality of cables 14 and is located in the main body 110 of the insulating housing 11, so as to prevent the electrical connection between the circuit board 13 and the plurality of cables 14 from being exposed to protect the electrical connection. The coating 15 is formed on the circuit board 13 and the plurality of cables 14 by, for example, insert molding.

It should be noted that, in other embodiments of the present first embodiment, the number of the plurality of cables 14 can be reduced according to the requirement and only electrically connected to the same side of the circuit board 13, or the number of the plurality of cables 14 can be set to one according to the requirement and electrically connected to one side of the circuit board 13, which is not limited to the manner disclosed in the present first embodiment.

The latch 16 has a holding section 161, a latch section 162, and a connecting section 163. The holding section 161 is disposed in the holding groove 116 of the insulating housing 11, and opposite sides of the holding section 161 are fastened to the insulating housing 11 by, for example, interference fit. The locking section 162 extends upward from the holding section 161 and is spaced apart from the wall 117 of the insulating housing 11. The locking section 162 is bendable relative to the holding section 161 and has two protrusions 164 protruding forward and on the left and right sides, respectively. The connecting section 163 extends upwardly from the top of the latch section 162 and defines a connecting aperture 165. The locking section 162 can be bent relative to the holding section 161 to be away from or close to the wall 117, so that the locking member 16 can be changed between a locked state and an unlocked state.

The pull strap 17 has a connecting strap body 171 and a holding strap body 172. The connecting band 171 has a ring-shaped connecting portion 173 and an extending portion 174 connected between the connecting portion 173 and the holding band 172. The connecting portion 173 is disposed through the connecting hole 165 and sleeved on the connecting section 163, and can pivot relative to the connecting section 163. The holding strap 172 is used for holding and pulling by a user. When the user pulls the pull strap 17 upward through the holding strap 172, the connecting strap 171 pulls the connecting section 163 to bend the locking section 162 relative to the holding section 161 and close to the wall 117, so that the locking member 16 is changed from the locked state to the unlocked state.

Referring to fig. 1, 4, 5 and 6, the board end connector 2 includes an insulating base 21, an insulating body 22, a plurality of terminals 23, and a metal housing 24. The insulating base 21 has a base 210 and a surrounding wall 211 extending upward from the base 210. The base 210 is formed with a mounting groove 212 and a mounting space 213 spaced in front of the mounting groove 212. The base 210 has two stoppers 214 respectively located at left and right opposite sides of the installation space 213. Each of the stoppers 214 has a stopper block 215 and a stopper block 216 extending inward from the inner side of the stopper block 215 and adjacent to the front end of the stopper block 215. The wall 211 defines a slot 217 that communicates with the top of the mounting slot 212 for receiving the circuit board 13 (shown in FIG. 2).

The insulating body 22 is disposed in the mounting groove 212 of the insulating base 21. A plurality of terminals 23 are disposed through the insulating body 22, and each of the terminals 23 has a contact portion 231 extending into the slot 217.

The metal shell 24 is sleeved on the insulating base 21 and is provided with a surrounding plate 241, a plugboard 242 and two folded plates 243. The surrounding plate 241 is inserted into the base 210 of the insulating base 21 and surrounds the periphery of the surrounding wall 211. A mating space 25 for mating the mating portion 111 of the wire-end connector 1 is formed between the surrounding plate 241 and the surrounding wall 211. Two buckling holes 244 spaced left and right and communicating with the abutting space 25 are formed on the front side of the surrounding plate 241. The plurality of fastening holes 244 are respectively used for fastening the plurality of protrusions 164. The insert plate 242 extends downward from the front side of the surrounding plate 241 and is inserted into the installation space 213. A plurality of flaps 243 extend outwardly and forwardly from the left and right sides of the insert plate 242, respectively, and are parallel to each other. A plurality of flaps 243 are inserted into the installation space 213 and are respectively located inside the plurality of stoppers 214. Each of the flaps 243 is formed with a pivot hole 245 extending along the second direction D2.

The elastic buckle 3 is formed by bending a metal rod integrally and has two pivoting rods 31 and a buckling rod 32. A portion of each of the pivoting levers 31 is received in the installation space 213 of the board-end connector 2. Each pivoting bar 31 has a side bar body 311 interposed between the corresponding stopper 214 and the corresponding flap 243, and a pivoting bar body 312 extending inward from the bottom end of the side bar body 311. The pivoting rod 312 can be pivotally connected to the pivoting hole 245 of the corresponding folded plate 243. The buckling rod 32 is connected to the top ends of the side rods 311 of the pivoting rods 31 for buckling the wall end surfaces 118 of the protection walls 112 of the line-end connector 1.

Referring to fig. 1 and 5, the pivot rod body 312 of the pivot rod 31 is prevented from moving outwards along the second direction D2 and separating from the pivot hole 245 by the design that the side rod body 311 of each pivot rod 31 is interposed between the stop block 215 of the corresponding stop block 214 and the corresponding folded plate 243, and the stop block 215 is stopped at the outer side of the corresponding side rod body 311 and corresponds to the position of the corresponding pivot rod body 312. Thus, the elastic buckle 3 can be firmly pivoted with the plurality of folded plates 243 of the board end connector 2.

Referring to fig. 1 and 6, the elastic buckle 3 can rotate between an unlocked position (shown in fig. 6) and a locked position (shown in fig. 9) relative to the board-end connector 2 with the plurality of pivoting rods 312 as axes. Since the limiting block 216 of each stopper 214 is located on the rotation path of the side lever body 311 of the corresponding pivoting lever 31, when the side lever body 311 of each pivoting lever 31 is obliquely abutted against the limiting block 216 of the corresponding stopper 214, the side lever body 311 is blocked by the limiting block 216 and cannot rotate, so that the elastic buckle 3 is limited in the inclined unlocking position.

The following will describe in detail the assembly and disassembly of the electrical connection device 100:

referring to fig. 1 and 7, when the terminal connector 1 is to be assembled to the board terminal connector 2, the circuit board 13 and the mating portion 111 are aligned with the slot 217 and the mating space 25, respectively. Subsequently, the line-end connector 1 is moved down in a mating direction M parallel to the third direction D3 and mated with the board-end connector 2. Since the elastic buckle 3 is inclined at the unlocking position, the pressing rod 32 is not blocked on the moving path of the wire end connector 1, so that the wire end connector 1 can be smoothly butted with the board end connector 2.

When the terminal connector 1 is mated with the board terminal connector 2, the circuit board 13 and the mating portion 111 are respectively inserted into the slot 217 and the mating space 25. The surrounding plate 241 of the metal shell 24 is inserted into the gaps 122 of the insulating housing 11. The circuit board 13 is electrically connected to the contact portions 231 of the terminals 23. The protrusions 164 of the locking member 16 are respectively locked to the locking holes 244 of the metal housing 24.

After the end connector 1 is mated, the extension portion 174 of the pull strap 17 abuts against the wall 117 of the insulating housing 11, and the extension portion 174 drives the connection portion 173 to rotate along a first rotation direction R1 relative to the connection section 163 of the locking member 16 and bend relative to the connection portion 173, so that the connection strap 171 is bent. Thus, the connection portion 173 is prevented from blocking the rotation path of the elastic buckle 3.

Referring to fig. 7 and 8, the elastic buckle 3 is rotated along the first rotation direction R1, so that the elastic buckle 3 rotates relative to the board end connector 2 and the line end connector 1 abutting against the board end connector 2. Since the circular arc surface 121 of each of the anti-falling portions 120 is configured to contact the pressing rod 32 of the elastic buckle 3 and allow the pressing rod 32 to slide thereon, so that the pressing rod 32 can pass over the anti-falling portion 120, when the pressing rod 32 of the elastic buckle 3 rotates to contact the circular arc surface 121 of each of the anti-falling portions 120, the force applied by the circular arc surface 121 to the pressing rod 32 will support the pressing rod 32 outwards, so as to cause the pressing rod 32 to bend and deform relative to the side rods 311 of the pivoting rods 31 and accumulate restoring elastic force. As the buckling rod 32 slides along the circular arc surface 121 and gets closer to the top end of the circular arc surface 121, the buckling deformation of the buckling rod 32 increases.

Referring to fig. 9 and 10, when the buckling rod 32 of the elastic buckle 3 passes over the arc surface 121 of each of the anti-falling parts 120, the elastic buckle 3 is vertical, and the buckling rod 32 rebounds by accumulated restoring elastic force and elastically buckles the wall end surfaces 118 of the protection walls 112, so that the elastic buckle 3 is positioned at the buckling position. Since the elastic buckle 3 is upright at the locking position, the elastic force of the buckling rod 32 applied to the wall end faces 118 is equivalent to a pressing force perpendicular to the wall end faces 118, so that the influence of manufacturing tolerance and assembly tolerance of the line end connector 1 and the board end connector 2 can be overcome, the line end connector 1 can be tightly and firmly combined with the board end connector 2, and stability of electric signal transmission between the line end connector 1 and the board end connector 2 can be maintained.

Each of the anti-falling portions 120 has a protruding structure protruding from the wall end surface 118, so that the anti-falling portion 120 can support the buckling rod 32 to deform and also can play a role in stopping the buckling rod 32. Therefore, the elastic buckle 3 can be stably positioned at the locking position, and the locking rod 32 can be prevented from sliding on the wall end surface 118 due to vibration or influence of improper external force so as to be separated from the wall end surface 118.

Referring to fig. 9 and 11, when the wire end connector 1 is to be removed from the board end connector 2, the holding strap body 172 of the pull strap 17 is pulled upward in a pulling direction P opposite to the mating direction M (shown in fig. 7). When the holding strap 172 is pulled up, the connecting strap 171 is driven to move upwards, so that the extending portion 174 drives the connecting portion 173 to rotate in a second rotation direction R2 opposite to the first rotation direction R1 (as shown in fig. 8) relative to the connecting section 163 of the locking member 16. The tension generated in the process of pulling the connecting portion 173 by the extending portion 174 makes the connecting portion 173 or the extending portion 174 of the connecting belt 171 contact the buckling and pressing rod 32 to force and push the buckling and pressing rod 32 to move towards the plurality of anti-releasing portions 120, so as to drive the elastic buckle 3 to rotate along the second rotation direction R2. Then, the pressing rod 32 slides along the arc surface 121 of each of the anti-falling portions 120. When the pressing bar 32 passes over the arc surface 121 of each of the anti-falling portions 120, the pressing bar 32 is separated from the plurality of protection walls 112 to release the locking of the plurality of protection walls 112.

Referring to fig. 11 and 12, when the extension portion 174 straightens the connection portion 173 to make the connection belt 171 stand upright as shown in fig. 11, the pushing force of the connection belt 171 on the buckling rod 32 will cause the elastic buckle 3 to continue to rotate along the second rotation direction R2, so that the elastic buckle 3 returns to the unlocking position shown in fig. 12.

Referring to fig. 1 and 12, when the holding strap 172 is pulled up and drives the connecting strap 171 to move up, the connecting strap 171 drives the locking section 162 to bend relative to the holding section 161 to approach the wall 117 through the connecting section 163, so that the locking member 16 is shifted to the unlocking state in which the protrusions 164 are separated from the locking holes 244 respectively. The pull strap 17 can then pull the line end connector 1 up to disconnect it from the board end connector 2.

Referring to fig. 8, 9 and 11, by means of each of the anti-falling portions 120 being adjacent to the wall surface 119 and the arc surface 121 being connected between the wall end surface 118 and the wall surface 119, the buckling rod 32 is smoothly propped against the anti-falling portion 120 to deform and accumulate the restoring force before the elastic buckle 3 rotates to the close to the locking position. Therefore, the smoothness of the elastic buckle 3 relative to the plurality of anti-falling parts 120 can be improved, and the restoring elastic force accumulated by the buckling rod 32 can vertically downwards press a plurality of wall end faces 118 when the elastic buckle 3 rotates to the buckling position, so that the stability of the combination of the wire end connector 1 and the board end connector 2 is improved.

The protruding structure is semi-cylindrical and extends along the width direction of the corresponding protection wall 112, so that the area of the arc surface 121 of the anti-releasing portion 120 is large, and the contact area between the anti-releasing portion 120 and the buckling rod 32 is large. Thus, the release preventing portion 120 can be lifted to support the buckling and pressing rod 32 to deform smoothly, and the blocking effect of the release preventing portion 120 for blocking the buckling and pressing rod 32 can be lifted.

It should be noted that, in other embodiments of the present first embodiment, each of the anti-disengaging portions 120 may be in a hemispherical shape or in a circular arc convex shape, not limited to a semi-cylindrical shape. In addition, the number of the plurality of protrusions 164 and the number of the plurality of buckling holes 244 may be set to be one according to the requirement, and is not limited to the number disclosed in the first embodiment.

Referring to fig. 13 and 14, a second embodiment of the electrical connection device 100 of the present invention has the same overall structure as the first embodiment, except for the wire end connector 1.

The retaining section 161 of the locking member 16 has an upwardly facing end 166. The insulating housing 11 further has a resilient retaining arm 123 disposed in the retaining groove 116, and the resilient retaining arm 123 retains the end 166 of the retaining section 161 to prevent the locking member 16 from moving upward and separating from the retaining groove 116 of the insulating housing 11. Thereby, the stability of the locking piece 16 in the holding groove 116 can be further improved.

In summary, in the electrical connection device 100 of each embodiment, the pressing rods 32 of the elastic buckle 3 elastically press the wall end faces 118, so that the terminal connector 1 can be tightly and firmly combined with the board end connector 2. The elastic buckle 3 and the locking piece 16 can be unlocked by pulling the pull belt 17 in one operation step, so that the convenience in operation and use can be improved. Through the design of the plurality of stoppers 214, the plurality of pivoting rods 312 of the elastic buckle 3 can be prevented from being separated from the plurality of pivoting holes 245 respectively to improve the combination stability, and the elastic buckle 3 can be limited at the unlocking position. By the design of the plurality of anti-falling parts 120, the buckling and pressing rod 32 of the elastic buckle 3 can be propped to deform and accumulate the reset elastic force, and the buckling and pressing rod 32 can be stopped to firmly position the elastic buckle 3 at the buckling position, so that the aim of the invention can be truly achieved.

However, the above-mentioned embodiments are merely examples of the present invention, and the present invention is not limited to the embodiments, but is intended to cover modifications and equivalent arrangements included within the scope of the appended claims and their equivalents.

Claims (19)

1. An electrical connection device, comprising:

a wire end connector comprising:

an insulating shell, which is provided with a holding groove, wherein the insulating shell is provided with two protection walls respectively positioned at the opposite sides of the holding groove, and each protection wall is provided with an anti-falling part;

the circuit board is arranged on the insulating shell;

at least one cable electrically connected to one side of the circuit board;

the locking piece is provided with a fixing section arranged in the fixing groove, a locking section extending from the fixing section and spaced from the insulating shell, and a connecting section extending from the locking section, and the locking section is provided with a protruding part; and

The pull belt is provided with a connecting belt body connected with the connecting section of the locking piece and a holding belt body;

a board end connector comprising:

an insulating base, which is formed with a slot for the circuit board to be inserted;

a plurality of terminals arranged on the insulating base, wherein each terminal is provided with a contact part extending into the slot; and

The metal shell is sleeved on the insulating seat, and one side of the metal shell is provided with two folded plates which extend outwards and are parallel to each other, and a buckling hole for buckling the protruding part;

the elastic buckle is provided with two pivoting rods which are respectively pivoted with the two folded plates, and a buckling rod which is connected with the two pivoting rods and is used for buckling the two protection walls;

when the line end connector is in butt joint with the board end connector, the circuit board is inserted into the slot, the protruding part is buckled with the buckling hole, and the buckling rod of the elastic buckle can pass through the anti-falling part to buckle the two protection walls.

2. The electrical connection device of claim 1, wherein each of the flaps is formed with a pivot hole, and each of the pivot bars has a pivot bar body pivotally connected to the pivot hole of the corresponding flap.

3. The electrical connection device as claimed in claim 2, wherein the insulating base has two stoppers, each of which is used for preventing the pivot rod body of the corresponding pivot rod from being separated from the corresponding pivot hole.

4. The electrical connection device as claimed in claim 3, wherein each of the stoppers has a stopper block located outside the corresponding folded plate, each of the pivoting bars further has a side bar body connected between the buckling bar and the pivoting bar body, the side bar body is interposed between the corresponding folded plate and the stopper block, and the stopper block corresponds to the position of the corresponding pivoting bar body and is used for stopping the outside of the corresponding side bar body.

5. The electrical connection device as claimed in claim 4, wherein each of the stoppers further has a stopper block extending inward from an inner side of the stopper block, the stopper block being positioned on a rotation path of the corresponding side lever body for stopping the corresponding side lever body.

6. The electrical connection device as claimed in claim 1, wherein the insulating base has two stoppers, each of the stoppers having a stopper block located on a rotation path of the corresponding pivoting lever for stopping the corresponding pivoting lever.

7. The electrical connection device as claimed in any one of claims 3 to 6 wherein the insulating base defines a mounting space between the two stops for receiving the two flaps and a portion of each of the pivot rods.

8. The electrical connection device as claimed in claim 1, wherein the insulating housing has a main body portion with an end face, the end face is formed with an opening, and the circuit board is disposed on the main body portion and partially extends out of the opening.

9. The electrical connection device as claimed in claim 8, wherein the insulating housing further has a mating portion extending from the end surface, and a mating space is formed between the metal shell and the insulating base for the mating portion to mate with.

10. The electrical connection device as claimed in claim 9, wherein the insulating housing further has two side portions extending from the end face, each of the side portions and the mating portion having a slit formed therebetween for the metal shell to be inserted.

11. The electrical connection device as claimed in claim 1, wherein the holding section of the latch has an end, the insulating housing further has a resilient holding arm disposed in the holding groove, the resilient holding arm holding the end to prevent the latch from being separated from the insulating housing.

12. The electrical connector of claim 1, wherein the board-end connector further comprises an insulative housing disposed within the insulative housing for receiving the plurality of terminals therethrough.

13. The electrical connection device as claimed in claim 1, wherein the wire-end connector comprises a plurality of wires electrically connected to opposite sides of the circuit board, respectively, and a cover for covering the electrical connection between the circuit board and the wires.

14. The electrical connection device as claimed in claim 1, wherein each of the protection walls further has a wall surface for the buckling rod to buckle, and the anti-falling portion is a protruding structure protruding from the wall surface for blocking the buckling rod buckled on the wall surface.

15. The electrical connection device as claimed in claim 14, wherein each of the protective walls further has a wall surface perpendicular to the wall surface, the retaining portion being adjacent to the wall surface and having an arcuate surface connected between the wall surface and the wall surface, the arcuate surface being configured to contact the retaining bar and allow the retaining bar to slide thereon so that the retaining bar can pass over the retaining portion and be retained on the wall surface.

16. The electrical connection device as claimed in claim 15, wherein the protrusion structure is semi-cylindrical and extends in an axial direction along a width direction of the corresponding protection wall.

17. The electrical connection device of claim 1, wherein the pull strap is configured to push the crimping bar away from both of the protective walls by tension when pulled.

18. The electrical connection device as claimed in claim 1, wherein the pull strap is configured to pull the push rod of the elastic buckle away from the two protection walls and the protrusion of the buckle away from the buckle hole.

19. The electrical connection device as claimed in any one of claims 1, 14, 15, 16, 17 or 18, wherein the elastic buckle is rotatable relative to the board-end connector between a locking position and an unlocking position, the elastic buckle is upright when the elastic buckle is in the locking position, the buckling rod is elastically buckled on the two protection walls and blocked by the anti-falling portion, the connection strap connected to the holding strap is bent, the elastic buckle is inclined when the elastic buckle is in the unlocking position, the buckling rod is moved away from the two protection walls, and the connection strap is upright.