TW202207549A - Electrical connector wherein the cover has a second buckle structure which can be correspondingly buckled to the first buckle structure of the housing in a two-stage manner - Google Patents

Abstract

An electrical connector includes a housing, a plurality of terminals, and a cover. The housing has a first buckle structure. The terminals are arranged on the housing, and each terminal has a fixed portion fixed to the housing, a tail portion extending downward from the fixed portion, and a surface soldering portion that is connected to the end of the tail portion and used for being soldered on the surface of the circuit board. The cover is arranged at the rear end of the housing. The cover has a second buckle structure and a terminal cover portion. The cover can move along the moving direction relative to the housing, and the second buckle structure can be correspondingly buckled to the first buckle structure of the housing in a two-stage manner, so that the cover can be operated to stop at the pre-buckle position and the final buckle position. When the cover is at the pre-buckle position, the surface soldering portion of the terminal is exposed, and when the cover is at the final buckle position, the terminal cover portion covers the tail portion and the surface soldering portion of the terminal.

Description

electrical connector

The present invention relates to an electrical connector, in particular to an electrical connector with a cover.

In recent years, Chinese Invention Patent Publication No. CN1166704A (corresponding to US Invention Patent No. US5,971,774) discloses a connector for connecting to a printed circuit board, the connector includes a housing having many The elongated conductive terminal projecting in the first direction, a centering member is attached to the housing, the centering member is used to hold the free end of the terminal in a substantially fixed orientation relative to the housing, wherein the centering member is The centering piece is movable relative to the housing in a first direction from a temporary position to a final position, the terminal being held tightly in the temporary position by the centering piece and loosely held in the final position by the centering piece.

The centering piece disclosed in this case is only used to hold and locate the free end of the terminal. The rear end of the terminal is still exposed. In some applications, exposed terminal tails may become contaminated, either during manufacture or in use, resulting in damage, degradation, poor contact, or open circuits of terminals and soldered contacts.

Therefore, one object of the present invention is to provide an electrical connector which can improve at least one disadvantage of the prior art.

Therefore, in some embodiments, the electrical connector of the present invention includes a housing, a plurality of terminals, and a cover. The housing has a first snap connection structure. The terminals are disposed on the housing, each terminal has a fixing portion fixed to the housing, a tail portion extending downward from the fixing portion, and a surface connected to the end of the tail portion and used for soldering on a circuit board one surface welding part. The cover is disposed at the rear end of the housing, the cover has a second buckle structure, and a terminal cover portion, the cover can move relative to the housing along a moving direction, and the second buckle structure can be two-stage Correspondingly to the first buckle structure of the shell, so that the cover can be operated to stop at a pre-buckle position and a final buckle position, when the cover is in the pre-buckle position, the The surface welding parts of the terminals are exposed, and when the cover is in the terminal buckled position, the terminal covering parts cover the tail parts and the surface welding parts of the terminals.

In some embodiments, the first buckle structure is formed on the left and right sides of the housing, the second buckle structure is formed on the left and right sides of the cover, and the cover can be moved from top to bottom along the moving direction. Move down from the pre-fastening position to the final fastening position.

In some embodiments, the housing further has two side extending portions located on the left and right sides of the rear end and extending laterally outward, and the cover also has two lower portions located on the left and right sides and extending downward. An extension part, the two side extension parts are correspondingly matched with the two lower extension parts, the first buckle structure is formed on the two side extension parts, and the second buckle structure is formed on the two lower extension parts.

In some embodiments, the first buckle structure includes a first buckle block located above and a second buckle block located below, the first buckle block and the second buckle block are respectively formed on corresponding sides The front side surface and the rear side surface of the extension part, each lower extension part has a front buckle strip and a rear buckle strip respectively corresponding to the front side surface and the rear side surface of the corresponding side extension part, and the second buckle connection structure includes forming The front buckling strip and the rear buckling strip of the corresponding downward extension are used for the corresponding buckle holes of the first buckle block and the second buckle block.

In some embodiments, each side extension of the casing has a guide hole formed downward, and each downward extension of the cover also has a downward facing between the front fastening strip and the rear fastening strip The formed guide block is inserted into the guide hole slidably up and down, so that the cover can move from top to bottom along the moving direction.

In some embodiments, the first buckle blocks formed on the two side extensions are staggered left and right and front and rear, and the second buckle blocks respectively formed on the two side extensions are staggered left and right and front and rear staggered.

In some embodiments, the first buckle structure is formed on the left and right sides of the housing, the second buckle structure is formed on the left and right sides of the cover, and the cover can be moved from rear to side along the moving direction The front ground is moved from the pre-buckling position to the final buckle position.

In some embodiments, the housing further has two rear extension parts located on the left and right sides of the rear end and extending backward; the cover also has two side arm parts located on the left and right sides, the two rear extension parts In correspondence with the two side arm portions, the first buckle structure is formed on the two rear extension portions, and the second buckle structure is formed on the two side arm portions.

In some embodiments, the first buckle structure includes a first buckle block located at the rear and a second buckle block located at the front, the first buckle block and the second buckle block are formed on corresponding rearward extensions The second buckle structure includes a buckle block formed on the corresponding side arm portion and used for correspondingly buckled with the first buckle block and the second buckle block.

In some embodiments, the terminal cover has an upper wall, two side walls, a rear wall, and a joint defined by the two side walls, the upper wall and the rear wall for at least partially accommodating the terminals An accommodating groove between the tail and the surface welding part.

According to the present invention, before the electrical connector is assembled, the cover can be combined with the second buckle structure to be disposed on the housing, which is convenient for parts transportation, storage, material preparation and on-line assembly. In addition, since the second fastening structure is corresponding to the first fastening structure fastened to the casing in two sections, the cover can be operated to stop at the pre-fastening position and the final fastening position, the When the cover is in the pre-fastening position, the surface welding parts of the terminals will be exposed, so as to facilitate the surface welding and installation of the surface welding parts of the electrical connector. When the welding operation is completed, the cover can be pushed to the final buckled position, and the terminal cover part of the cover can cover the tail part and the surface welding part of the terminals. Therefore, after the electrical connector is assembled, the cover of the present invention can completely cover the rear end of the terminals exposed at the rear end of the housing and the surface soldering portion, preventing contamination and damage to the terminals and solder joints , deterioration, poor contact, or open circuit.

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

Referring to FIGS. 1 to 4 , a first embodiment of the electrical connector 100 of the present invention is suitable for being disposed on a circuit board 200 . The circuit board 200 is a flexible circuit board 200 in this embodiment, but not limited to this. . The electrical connector 100 includes a housing 1 , a plurality of terminals 2 , and a cover 3 .

Referring to FIGS. 1 to 5 , the housing 1 has an abutting portion 11 located at the front end in a front-rear direction D1 (the direction of the arrow is forward, and the reverse is rear), and a terminal mounting groove 12 formed from the rear end to the front. , the terminal installation slot 12 has a plurality of insertion holes 121 formed at the front end of the abutting portion 11 , the insertion holes 121 are in a left-right direction D2 in the first embodiment (the direction of the arrow is to the right, the reverse is to the left ) are side by side at intervals, and are divided into two upper and lower rows along an up and down direction D3 (the direction of the arrow is upward, and the reverse is downward). The terminals 2 are disposed on the housing 1 , each terminal 2 has a fixing portion 21 fixed on the housing 1 , a contact portion 22 extending forward from the fixing portion 21 and corresponding to the insertion holes 121 , A tail portion 23 extending downward from the fixing portion 21 along the up-down direction D3, and a surface soldering surface connected to the end of the tail portion 23 and used for soldering circuit contacts (not shown) on the surface of the circuit board 200 Section 24. In detail, the housing 1 also has a fixing portion 21 for assembling the terminals 2 and a terminal holding block 13 assembled at the rear of the terminal mounting groove 12 , so that the terminals 2 are fixedly arranged in the housing body 1. The fixing portions 21 of the terminals 2 may be formed with, for example, a barb structure and fixed to the terminal holding block 13 by a tight fit; or the fixing portions 21 of the terminals 2 may be insert-molded It is fixed to this terminal holding block 13 .

Referring to FIGS. 1 and 4 to 6 , the cover 3 is disposed at the rear end of the housing 1 . In the first embodiment, the housing 1 also has a rear end located at the rear end and facing laterally along the left-right direction D2 The two side extending portions 14 extending outward, and the first buckling structures 15 formed on the two side extending portions 14 located on the left and right sides of the housing 1 . The cover 3 extends downwards from the left and right sides and is correspondingly matched with the two extending portions 14 on both sides of the two extending portions 31 , the second fastening structure 32 formed on the two extending portions 31 , and a terminal cover portion 33. The cover 3 can move relative to the housing 1 in a moving direction, and the second buckle structure 32 can be correspondingly buckled with the first buckle structure 15 of the housing 1 in two sections, so that the cover 3 can is operated to stop at a pre-buckling position and a final-buckling position. When the cover 3 is in the pre-fastening position, the surface welding parts 24 of the terminals 2 are exposed; when the cover 3 is in the final fastening position, the terminal cover 33 covers the tails 23 of the terminals 2 Weld 24 with the surface. Specifically, in the first embodiment, the terminal cover 33 has an upper wall 331 , two side walls 332 connected to the upper wall 331 and extending downward, and connected to the upper wall 331 and connected to the two side walls 332 A rear wall 333, and a accommodating groove 334 jointly defined by the two side walls 332, the upper wall 331 and the rear wall 333 and used to at least partially accommodate the tail portion 23 and the surface welding portion 24 of the terminals 2 .

In detail, in the first embodiment, the direction of the moving direction is the up-down direction D3, and the cover 3 can move from the pre-fastening position to the final fastening position along the moving direction from top to bottom. . The first buckle structure 15 includes two first buckle blocks 151 located above and two second buckle blocks 152 located below. The two first buckle blocks 151 and the two second buckle blocks 152 are respectively formed in corresponding positions. The front side and the rear side of the side extension 14. Wherein, the two first buckle blocks 151 formed on the two side extension parts 14 are staggered left and right and front and rear, and one of the two first buckle blocks 151 is formed on the right side extension part 14 The front side, the other is formed on the rear side of the side extension 14 on the left side; the two second buckle blocks 152 formed on the two side extensions 14 are staggered left and right and front and rear, the two second One of the buckle blocks 152 is formed on the rear side of the side extending portion 14 located on the right side, and the other is formed on the front side surface of the side extending portion 14 located on the left side.

Each lower extension 31 has a front buckle 311 and a rear buckle 312 corresponding to the front side and the rear side of the corresponding side extension 14 , respectively. The second buckling structure 32 includes a front buckling bar 311 and a rear buckling bar 312 formed on the corresponding down-hanging portion 31 and used for correspondingly buckling the two first buckling blocks 151 and the two second buckling blocks 152 . A plurality of button holes 321 are connected. The button holes 321 include two first button holes 321 a corresponding to the two first button blocks 151 and two second button holes 321 b corresponding to the two second button blocks 152 . When the cover 3 is in the pre-buckling position, the two first buckle holes 321 a are buckled with the two first buckle blocks 151 , and the two second buckle holes 321 b are not yet buckled with the two second buckle blocks 152 . In detail, at this time, the bottom edges of the front buckle strip 311 and the rear buckle strip 312 formed with the second buckle holes 321b can abut against the two second buckle blocks 152, so that the cover 3 stops at the Pre-buckling position; when the cover 3 moves from the pre-buckling position to the final buckle position, the two first buckle holes 321a are still buckled with the two first buckle blocks 151, and the two second buckle holes 321b is buckled with the two second buckle blocks 152, so that the cover 3 stops at the final buckled position. That is, the cover 3 can be pre-assembled to the housing 1 by the first button hole 321 a and the two first button blocks 151 . The cover 3 can be completely assembled to the casing 1 and stopped at the final buckled position by the second buckle hole 321b and the two second buckle blocks 152 . In addition, the top surface of each side extension 14 of the casing 1 has a guide hole 141 formed downward, and each downward extension 31 of the cover 3 also has a front buckle 311 and a rear buckle. A guide block 313 is formed between 312 and facing downward. The guide blocks 313 of the two lower extension parts 31 can be inserted into the guide holes 141 of the two side extension parts 14 so that the cover 3 can be slid up and down. Move from top to bottom in this moving direction.

In general, before the electrical connector 100 is assembled, the cover 3 can be disposed on the housing 1 through the first snap-fit structure 15 and the second snap-fit structure 32, which is convenient for parts transportation, storage, and storage. Material preparation and on-line assembly. In addition, since the second buckle structure 32 is correspondingly buckled to the first buckle structure 15 of the housing 1 in two stages, the cover 3 can be operated to stop at the pre-buckle position and the final buckle When the cover 3 is in the pre-fastened position, the surface soldering parts 24 of the terminals 2 will be exposed, so as to facilitate the surface soldering parts 24 of the electrical connector 100 and the circuit contacts of the circuit board 200 For surface welding installation. After the welding operation is completed, the cover 3 can be pushed to the final buckled position, and the terminal cover 33 of the cover 3 covers the tails 23 and the surface welding parts 24 of the terminals 2 at this time. Therefore, after the electrical connector 100 is assembled, the cover 3 of the present invention can completely cover the tail portion 23 and the surface welding portion 24 of the terminals 2 exposed at the rear end of the housing 1 to prevent contamination, the terminals 2 and the damage, deterioration, poor contact, or open circuit of the welded contacts.

Referring to FIG. 7 to FIG. 10 , the difference between the second embodiment of the electrical connector 100 of the present invention and the first embodiment is that the housing 1 also has two rearwardly extending rearward The cover 3 also has two side arm portions 34 located on the left and right sides and extending forward from the left and right edges of the rear wall 333 . The two rear extension portions 16 and the two side arm portions 34 correspondingly matched, the first buckle structure 15 is formed on the two rear extension parts 16 located on the left and right sides of the housing 1 , and the second buckle structure 32 is formed on the left and right sides of the cover 3 . The arm portions 34 on both sides.

Referring to FIG. 7 and FIGS. 11 to 13 , the direction of the moving direction is the front-rear direction D1 , and the cover 3 can move from the pre-fastening position to the final-fastening position from the back to the front along the moving direction. The first buckle structure 15 includes two first buckle blocks 151 ′ located at the rear and two second buckle blocks 152 ′ located at the front. The two first buckle blocks 151 ′ and the two second buckle blocks 152 ′ Formed on the inner wall surface of the corresponding rear extension portion 16 , the second buckle structures 32 include respectively formed on the outer side surfaces of the corresponding side arm portions 34 and used to connect with the two first buckle blocks 151 ′ and the two second buckle blocks 151 ′ The buckle block 152' corresponds to the buckled block 322 to be buckled.

A guide chute 161 extending along the front-rear direction D1 and opening to the rear is formed on the inner wall surface of each rear extension 16 of the housing 1 , and the cover 3 is also formed with left and right side edges from the upper wall 331 . The two guide sliding blocks 35 extending outwardly and slidably inserted into the guide sliding grooves 161 of the two rear extension portions 16 , so that the cover 3 can move from back to front along the moving direction.

When the cover 3 is in the pre-buckling position, each buckle block 322 is respectively buckled to the first buckle block 151 ′ and located between the first buckle block 151 ′ and the second buckle block 152 ′, so that the The cover 3 stops at the pre-fastening position; when the cover 3 moves from the pre-fastening position to the final fastening position, the two locking blocks 322 are respectively fastened to the two second locking blocks 152 ′ and the two The guide sliding block 35 can abut against the inner wall surfaces of the front ends of the two guide sliding grooves 161 , so that the cover 3 stops at the final buckled position.

To sum up, in the present invention, before the electrical connector 100 is assembled, the cover 3 can be disposed on the housing 1 through the first buckle structure 15 and the second buckle structure 32 in combination, which facilitates the transportation of parts, Warehousing, material preparation and on-line assembly. In addition, since the second buckle structure 32 is correspondingly buckled to the first buckle structure 15 of the housing 1 in two stages, the cover 3 can be operated to stop at the pre-buckle position and the final buckle When the cover 3 is in the pre-snap-connected position, the surface welding parts 24 of the terminals 2 will be exposed to facilitate the surface welding installation of the surface welding parts 24 of the electrical connector 100 . After the welding operation is completed, the cover 3 can be pushed to the final buckled position, and the terminal cover 33 of the cover 3 covers the tails 23 and the surface welding parts 24 of the terminals 2 at this time. Therefore, after the electrical connector 100 is assembled, the cover 3 of the present invention can completely cover the tail portion 23 and the surface welding portion 24 of the terminals 2 exposed at the rear end of the housing 1 to prevent contamination, the terminals 2 and the damage, deterioration, poor contact, or open circuit of the welded contacts.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

100: Electrical connector 1: Shell 11: Butt joint 12: Terminal installation slot 121: jack 13: Terminal holding block 14: Side extension 141: Pilot hole 15: The first buckle structure 151: The first buckle block 152: The second buckle block 151': The first buckle block 152': Second Buckle 16: Rear extension 161: Guide chute 2: Terminal 21: Fixed part 22: Contact part 23: tail 24: Surface welding part 3: cover 31: Downpipe 311: Front buckle strip 312: Rear buckle strip 313: Guide block 32: Second buckle structure 321: button hole 321a: first button hole 321b: Second button hole 322: Buckle block 33: Terminal cover 331: Upper Wall 332: Sidewall 333: Back Wall 334: accommodating slot 34: Side Arm 35: Guide slider 200: circuit board D1: Front and rear direction D2: left and right direction D3: up and down direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: 1 is a perspective view of a first embodiment of the electrical connector of the present invention disposed on a circuit board, in which the cover is in a pre-snap connection position; 2 is a perspective view of the first embodiment and the circuit board in FIG. 1 viewed from another perspective; Fig. 3 is a perspective exploded view of Fig. 2; Fig. 4 is a perspective view similar to Fig. 1, in which the cover is in a final buckled position; Figure 5 is a cross-sectional view of the first embodiment in Figure 4; Figure 6 is another cross-sectional view of the first embodiment in Figure 5; 7 is a perspective view of a second embodiment of the electrical connector of the present invention disposed on the circuit board, with the cover in the pre-fastened position; Fig. 8 is a top view of the second embodiment in Fig. 7; Fig. 9 is a perspective exploded view of Fig. 7; Fig. 10 is a perspective exploded view of Fig. 9 viewed from another perspective; Figure 11 is a cross-sectional view of the second embodiment in Figure 7; Figure 12 is a perspective view similar to Figure 7 with the cover in the final buckled position; and FIG. 13 is a cross-sectional view of the second embodiment of FIG. 12 .

100: Electrical connector

1: Shell

11: Butt joint

14: Side extension

141: Pilot hole

15: The first buckle structure

151: The first buckle block

152: The second buckle block

2: Terminal

23: tail

24: Surface welding part

3: cover

31: Downpipe

311: Front buckle strip

312: Rear buckle strip

313: Guide block

32: Second buckle structure

321: button hole

321a: first button hole

321b: Second button hole

33: Terminal cover

331: Upper Wall

332: Sidewall

333: Back Wall

200: circuit board

D1: Front and rear direction

D2: left and right direction

D3: up and down direction

Claims (10)

An electrical connector comprising: a shell, having a first buckle structure; A plurality of terminals are arranged in the casing, each terminal has a fixing part fixed on the casing, a tail extending downward from the fixing part, and a terminal connected to the end of the tail and used for soldering to a circuit board a surface weld on the surface; and A cover is provided at the rear end of the housing, the cover has a second buckle structure, and a terminal cover portion, the cover can move relative to the housing along a moving direction, and the second buckle structure can be two-stage Correspondingly to the first buckle structure of the casing, so that the cover can be operated to stop at a pre-buckle position and a final buckle position, when the cover is in the pre-buckle position, the cover The surface welding parts of the terminals are exposed, and when the cover is in the terminal buckle position, the terminal covering part covers the tail parts and the surface welding parts of the terminals. The electrical connector according to claim 1, wherein the first snap connection structure is formed on the left and right sides of the housing, the second snap connection structure is formed on the left and right sides of the cover, and the cover can be along the The moving direction moves from the pre-fastening position to the final fastening position from top to bottom. The electrical connector as claimed in claim 2, wherein the housing further has two side extending portions located on the left and right sides of the rear end and extending laterally outward, and the cover also has two side extending portions located on the left and right sides facing downwards The two extending parts are extended, the two side extending parts are correspondingly matched with the two lower extending parts, the first buckling structure is formed on the two side extending parts, and the second buckling structure is formed on the two lower parts extension. The electrical connector of claim 3, wherein the first buckle structure comprises a first buckle block located above and a second buckle block located below, the first buckle block and the second buckle block respectively formed on the front side and rear side of the corresponding side extension, each lower extension has a front and a rear buckle respectively corresponding to the front side and the rear side of the corresponding side extension. The two buckling structures include a front buckling strip and a rear buckling strip formed on the corresponding downward extension portion and are used for buckle holes corresponding to the first buckle block and the second buckle block. The electrical connector as claimed in claim 4, wherein each side extending portion of the housing has a guide hole formed downward, and each downward extending portion of the cover also has a front buckling bar and a rear buckling connection A guide block formed between the bars and facing downward, the guide block can be inserted into the guide hole so as to slide up and down, so that the cover can move from top to bottom along the moving direction. The electrical connector according to claim 5, wherein the first buckle blocks formed on the two side extending portions are staggered left and right and front and rear, and the second buckle blocks formed on the two side extending portions respectively The blocks are staggered left and right and front to back. The electrical connector according to claim 1, wherein the first snap connection structure is formed on the left and right sides of the housing, the second snap connection structure is formed on the left and right sides of the cover, and the cover can be along the The moving direction moves from the pre-fastening position to the final fastening position from the rear to the front. The electrical connector according to claim 7, wherein the housing further has two rear extension parts located on the left and right sides of the rear end and extending backward, and the cover further has two side arm parts located on the left and right sides The two rear extension parts are correspondingly matched with the two side arm parts, the first buckle structure is formed on the two rear extension parts, and the second buckle structure is formed on the two side arm parts. The electrical connector of claim 8, wherein the first buckle structure comprises a first buckle block located at the rear and a second buckle block located at the front, the first buckle block and the second buckle block Formed on the inner wall surface of the corresponding rear extension, the second buckle structure includes a buckle block formed on the corresponding side arm portion and used for correspondingly buckled with the first buckle block and the second buckle block. The electrical connector of claim 1, wherein the terminal cover has an upper wall, two side walls, and a rear wall, and is jointly defined by the two side walls, the upper wall and the rear wall for at least partially an accommodating groove for accommodating the tails of the terminals and the surface welding part.

Images