CN201616525U - electrical connector - Google Patents

Abstract

The utility model provides an electric connector, which comprises an insulation seat body, a terminal group and a pulling element, wherein the insulation seat body is internally provided with a plugging space, a socket for inserting a preset flexible circuit board is arranged in front of the plugging space, and a plurality of terminal grooves communicated with the plugging space are arranged behind the socket; the terminal group is provided with a plurality of terminals which are respectively arranged in the terminal grooves in a penetrating way, one side of the base part of each terminal is convexly provided with a contact part, the base part extends upwards to form a supporting arm, the other side of the supporting arm is provided with a force arm part, one side of the force arm part extends towards the base part to form an elastic arm with a preset distance smaller than the thickness of the preset flexible circuit board with the contact part, and the upper part of the other side of the elastic arm is concavely provided with a shaft groove; the pulling element is movably pivoted at the rear of the terminal group, one side of the pulling element is provided with a shaft part, and the shaft part is provided with a plurality of ejection cams which respectively support against the inner top surface of the terminal groove and downwardly push the shaft groove to link the elastic arm to upwards expand. The utility model discloses good electrical contact effect has.

Description

electrical connector

technical field

The utility model provides an electrical connector, especially a puller that can be pulled to make the cam on the shaft bear against the inner top surface of the terminal groove, and push the terminal down to spread out to facilitate the flexible circuit board. After inserting, and then pulling to reset the pulling element, the terminal can be clamped to the flexible circuit board to form an electrical connection, thereby ensuring a good electrical contact effect.

Background technique

With the rapid development of computer and electronic technology nowadays, various electronic products such as handheld computers, notepads or notebook computers have been ubiquitous in every corner of society, and nowadays various electronic products, mobile phones and personal digital assistants are It tends to be light, thin, short, and small. In order to reduce the size of various electronic products, the component structure on the circuit board inside the electronic product needs to be small and precise, and the overall structural strength needs to be strengthened accordingly. In response to the current development trend of electronic products, however, the general practice is to use flexible circuit board connectors to achieve connections with flexible printed circuit boards (Flexible Printed Circuit, referred to as FPC), flexible flat cables (Flexible Flat Cable, referred to as FFC), etc. form a good electrical connection.

In addition, there are many types of flexible printed circuit board connectors on the market, as shown in Figures 7 and 8, which are the side sectional view of an existing electrical connector and the side sectional view of another existing electrical connector, respectively. It can be clearly seen that the existing electrical connector A is provided with a plurality of conductive terminals A2 in the casing A1, and each conductive terminal A2 has a fixed arm A21 and a contact arm A22 extending forward respectively, and can be connected to the fixed arm. A pivot joint slot A211 is formed on the end of A21, and the cover plate A3 can be pivotally connected to the pivot joint slot A211 on the fixed arm A21 by using the pivot portion A31 provided at the bottom, so that the cover plate A3 can be opened and closed , or use the two side arm levers A32 to slide and move in the chute on the two sides of the housing A1, and when in use, the flexible circuit board and the conductive terminal can be directly pressed against the flexible circuit board and the conductive terminal by rotating or pushing the cover A3 A2 are in contact with each other to form an electrical connection, and this pressure makes the flexible circuit board positioned in the housing A1, but when the flexible circuit board is pulled by an improper external force, it will easily cause the pivot portion A31 of the cover A3 to reverse, Or come out and slide outward, thereby releasing the pressure on the flexible circuit board, causing the flexible circuit board to fall off from the inside of the housing A1, affecting the overall electrical contact effect; in addition, the cover A3 is in the process of pulling Among them, the plastic structure is often damaged, broken or even dislodged due to insufficient strength of the plastic structure or improper operation. This electrical connector A loses all functions, and the other cover A3 cannot be disassembled and reassembled. It must be solved by desoldering and rework.

Furthermore, as shown in FIG. 9, it is a side sectional view of another existing electrical connector. It can be clearly seen from the figure that the existing electrical connector B is provided with a plurality of H-shaped connectors in the insulating body B1. The contact terminal B2, wherein one side of the contact terminal B2 is provided with the relative upper contact arm B21 and the lower contact arm B22, while the other side is provided with the relative connecting arm B23 and the pressure bearing arm B24, and the bottom of the transfer plate B3 is provided The elliptical pivoting part B31 moves between the connecting arm B23 and the pressure bearing arm B24, and indirectly forces the protrusions provided at the ends of the upper contact arm B21 and the lower contact arm B22 to be relatively clamped on the flexible circuit board. Improve the above-mentioned problem that the flexible circuit board is easy to fall off, and have a better electrical contact effect, but the indirect force of the transfer plate B3 often causes the clamping force of the upper contact arm B21 on the flexible circuit board to be too large, resulting in After the contact terminal B2 is used for a long time, the elastic force will fail, so that the original shape cannot be restored, resulting in permanent bending deformation at the fulcrum B25 and the upper contact arm B21, and the clamping force of the contact terminal B2 cannot be ensured. The overall stability is poor, the structural strength is insufficient, and the turning plate B3 will still be damaged, broken or even dislodged due to insufficient structural strength or improper operation during the pulling process, so that the function and effect of the existing electrical connector B in operation Quite limited, this is where the unemployed need to improve.

Therefore, in view of the above-mentioned existing deficiencies and deficiencies, the creators collected relevant information and evaluated and considered in many ways, and then began to develop and design this kind of electrical connector through continuous trial production and modification based on years of experience in this industry. A new type of patent is born.

Contents of the invention

The main purpose of this utility model is to provide an electrical connector to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the utility model provides an electrical connector, including an insulating base body, a terminal group and a pulling element, wherein:

There is a plug-in space inside the insulating seat body, and a socket for inserting a preset flexible circuit board is provided in front of the plug-in space, and a plurality of terminals connected with the plug-in space are provided behind the socket groove;

The terminal group has a plurality of terminals respectively pierced in the terminal slots, and a contact portion protrudes from one side of the base of the terminals, and a support arm extends upward from the base, and the other side of the support arm A force arm part is provided, one side of the force arm part extends towards the direction of the base part, and an elastic arm forming a predetermined distance smaller than the preset thickness of the flexible circuit board with the contact part is formed, and the other side of the elastic arm is recessed above shaft groove;

The wrenching element is movable and pivotally connected to the rear of the terminal group, and one side of the wrenching element is provided with a shaft portion, and the shaft portion is respectively pressed against the inner top surface of the terminal groove and pushed down on the shaft groove. A plurality of ejection cams that are linked upwards by the elastic arms.

In a preferred embodiment, a clamping groove is provided in front of the terminal groove of the insulating base body, and a holding part that can be embedded in the clamping groove is provided on the outside of the contact part of each terminal of the terminal group, and the The other side of the holding part is provided with a welding part that can be exposed and clamped outside the terminal groove.

In a preferred embodiment, grooves are provided on the outer sides of the second terminal groove of the insulating seat body, and the shaft portion of the pulling element is respectively provided with protrusions that can be pivotally connected in the grooves on the outer sides of the second pushing cams. column.

In a preferred embodiment, each terminal of the terminal group is in the shape of an I, and each terminal has a contact portion on the elastic arm on the side of the force arm portion, and is clamped on the pre-set relative to the contact portion on the base portion. A flexible circuit board is provided to form an electrical connection.

In a preferred embodiment, the shaft grooves of each terminal of the terminal group are outwardly formed with a hook portion, and the inside of the pushing cam of the pulling element is provided with a through hole for the hook portion to extend into and rotate after being socketed. channel.

In a preferred embodiment, the bottom of the pushing cam of the pulling element is provided with a flat abutting surface that can stop against the bottom surface of the shaft groove.

Compared with the prior art, the utility model has the beneficial effects of:

The plurality of terminal slots inside the insulating base of the utility model are provided with terminal groups, and a wrenching element is pivotally connected behind the terminal group. The top cam bears against the top surface of the terminal slot, and pushes down on the shaft slot on one side of the terminal to produce elastic deformation, while the elastic arm on the other side is linked to expand upwards. This method can ensure the rotation stroke of the top cam It is more reliable and will not cause additional offset, so that the flexible circuit board can be inserted to the position, and then the trigger element is pulled to reset the cover, so that the terminal can be kept in a state of no force, and through the elastic arm The elastic recovery force and the contact part on the base are relatively clamped and contacted with the flexible circuit board to form an electrical connection, and it can avoid excessive clamping force of the terminal group on the flexible circuit board, and it is not easy to produce bending type during use Change.

The pulling element of the utility model can be used as an auxiliary part, instead of using the force generated by the pulling element to directly provide the force required for clamping and contacting the flexible circuit board, even if the pulling element is pulled In the case of damage, breakage or even detachment due to insufficient structural strength or improper operation, a predetermined distance smaller than the thickness of the flexible circuit board can still be formed between the elastic arm on the terminal and the contact part of the base, so that it can be relatively clamped and contacted with the flexible circuit board. The electrical connection is formed on the circuit board, so as to ensure that the main functions of the electrical connector will not be affected and maintain a good electrical contact effect.

The protrusions on both sides of the pulling element of the utility model are movably pivoted in the groove corresponding to the insulating base, which can prevent the pulling element from breaking away from the insulating base, and can ensure the stability when pulling. And when the user pulls the pulling element upward, it can also stop the shaft groove on the terminal through the flat resisting surface of the bottom of the push cam, so that the pulling element remains open to facilitate the insertion of the flexible circuit board The plug-in space inside the insulating base body.

Description of drawings

Fig. 1 is the three-dimensional exterior view of the utility model;

Fig. 2 is a three-dimensional exploded view of the utility model;

Fig. 3 is a side view sectional view before the utility model is assembled;

Fig. 4 is the three-dimensional sectional view of the assembled utility model;

Fig. 5 is a side view sectional view when the utility model is in use;

Fig. 6 is a side view sectional view of the utility model after use;

Figure 7 is a side sectional view of an existing electrical connector;

Fig. 8 is a side sectional view of another conventional electrical connector;

FIG. 9 is a side sectional view of another conventional electrical connector.

Explanation of reference signs: 1-insulating seat body; 11-inserting space; 111-socket; 12-terminal groove; 121-holding groove; 122-inner top surface; 13-groove; 2-terminal group; 21- Terminal; 211-base; 2111-contact; 2112-holding; 2113-welding; 212-support arm; 213-force arm; 2131-elastic arm; 2132-contact; 2133-shaft groove; 3-pushing element; 31-shaft; 311-pushing cam; 3111-resisting surface; 312-passing channel; 313-boss; 32-pushing part; -Metal contact; A-electrical connector; A1-shell; A2-conductive terminal; A21-fixed arm; A211-pivot slot; A22-contact arm; A3-cover; A31-pivot; A32-arm Rod; B-electrical connector; B1-insulating body; B2-contact terminal; B21-upper contact arm; B22-lower contact arm; B23-connecting arm; B24-pressure bearing arm; B25-fulcrum; B31 - Pivot.

Detailed ways

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the utility model are now illustrated in detail with respect to the preferred embodiment of the utility model. Its features and functions are as follows, so as to fully understand.

Please refer to Figures 1 to 4, which are respectively the three-dimensional appearance diagram, three-dimensional exploded view, side view section view before assembly and three-dimensional section view after assembly of the present utility model. It can be clearly seen from the figure that the utility model Including insulating seat body 1, terminal group 2 and wrenching element 3, wherein:

The insulating seat body 1 has a through-shaped insertion space 11 inside, and a socket 111 is provided in front of the insertion space 11, and a plurality of terminal slots 12 that can communicate with the insertion space 11 are provided behind the socket 111. The front of the terminal slot 12 is provided with a clamping slot 121 , and the insulating base 1 is respectively provided with grooves 13 at two opposite outer sides of the terminal slot 12 .

The terminal group 2 has a plurality of terminals 21 in an I-shape, and a contact portion 2111 protrudes upward on one side of the base portion 211 of the terminal 21, and a holding portion 2112 is provided on the outside of the contact portion 2111, and a holding portion 2112 is provided on the other side of the holding portion 2112. There is a welding part 2113; in addition, the base part 211 is located between the contact part 2111 and the welding part 2113 and has a support arm 212 extending obliquely upwards, and the other side of the support arm 212 is provided with a force arm part 213, and the force arm part 213 side faces the base The direction 211 is tapered and extended with an elastic arm 2131 with a contact portion 2132, and a predetermined distance is formed between the elastic arm 2131 and the contact portions 2132, 2111 on the base 211, and the other side of the elastic arm 2131 is recessed in a shape of ㄩ. The shaft groove 2133 is formed with a hook portion 2134 facing outward.

One side of the wrenching element 3 is provided with a shaft portion 31 with a plurality of ejection cams 311, and the inside of each ejection cam 311 is respectively provided with a passageway 312, and the bottom of the ejection cam 311 is provided with a flat The abutting surface 3111 , and the shaft portion 31 are respectively provided with protrusions 313 on two opposite outer sides of the ejection cam 311 , and a wrenching portion 32 is provided on the other side of the wrenching element 3 .

When the utility model is assembled, the plurality of terminals 21 of the terminal group 2 are respectively inserted into the plurality of terminal grooves 12 of the insulating base 1, and the holding part 2112 on one side of the base part 211 is inserted into the terminals. In the clamping groove 121 in front of the groove 12, the welding part 2113 on the other side of the base 211 is exposed and clamped outside the terminal groove 12, and at the same time, the base 211 is connected to the terminal groove 12 on the other side of the supporting arm 212. An appropriate distance is formed between the inner top surfaces 122, and the contact portion 2132 of each elastic arm 2131 and the contact portion 2111 on the base portion 211 are respectively positioned above and below the socket 111 to align with each other, and a predetermined distance is formed. The protrusions 313 on the two opposite outer sides of the moving element 3 are pivotally connected to the groove 13 of the insulating base 1, preventing the pulling element 3 from breaking away from the insulating base 1, and pushing the plurality of shafts 31 to the top. The cams 311 are respectively embedded in the terminals 21 to move and pivot in the shaft groove 2133 above the rear side of the arm portion 213, so that the hook portion 2134 formed by the shaft groove 2133 protrudes into the inner sleeve of the insertion channel 312 inside the pushing cam 311 After connecting, the pulling element 3 can utilize the push-out cam 311 provided by the shaft portion 31 as the axis to turn and open or cover in the shaft grooves 2133 on the plurality of terminals 21, thus completing the whole of the utility model. assembly.

Please refer to Fig. 2, Fig. 3, Fig. 5 and Fig. 6 at the same time, which are respectively the three-dimensional exploded view of the utility model, the side view sectional view before assembly, the side view sectional view during use and the side view sectional view after use , it can be clearly seen from the figure that the above-mentioned insulating base body 1 is welded to the predetermined circuit board by using the welding part 2113 of each terminal 21 of the terminal group 2, and when in use, the user can pull upward on the pulling element 3, the push cam 311 of the shaft part 31 rotates at an angle in the shaft groove 2133 on the plurality of terminals 21, and uses the push cam 311 to be held against the inside of the terminal groove 12 The top surface 122 is used as a support, and pushes down on the shaft groove 2133, so that the force arm part 213 can produce oblique downward bending elastic deformation displacement with the support arm 212 as the fulcrum, and the elastic arm on the other side is linked by leverage 2131 is stretched upwards, and at the same time, the flat abutment surface 3111 at the bottom of the push cam 311 is blocked by the shaft groove 2133, so that the pulling element 3 and the terminal group 2 can maintain the preset position, so as to facilitate the insertion of the flexible circuit board 4 The insertion space 11 inside the insulating base body 1 .

And after the flexible circuit board 4 is inserted, a larger force can be applied to pull down on the pulling part 32 to reset and close, so that the abutment surface 3111 at the bottom of the push cam 311 can overcome the elasticity generated by the shaft groove 2133 The reaction force is then rotated by the curved surface of the push cam 311 along the shaft grooves 2133 on the multiple terminals 21, and returns to the original position by the elastic restoring force of the force arm part 213 itself, and is no longer pushed. The pushing of the cam 311 keeps the terminal 21 in an unstressed state, and the pulling element 3 can be quickly reset with less effort after being pulled, and is supported against the pushing cam 311 through the shaft groove 2133 on the terminal 21 And present balanced positioning, at this moment, just can pass through the clamping force that the preset distance between the contact portion 2132 of elastic arm 2131 and the contact portion 2111 on the base 211 is less than the thickness of flexible circuit board 4 produces, can relatively clamp Keep in contact with the two side surfaces of the flexible circuit board 4, and make the contact part 2111 on the base 211 form an electrical connection with the metal contact 41 on the bottom surface of the flexible circuit board 4, so that the flexible circuit board 4 is pulled by undue external force It is not easy to dislodge or slide out when it is time to move, and it can ensure good electrical contact effect.

If the user wants to take out the flexible circuit board 4, he only needs to pull up the puller 32 on the puller 3 again, so that the pushing cam 311 on the shaft 31 pushes down on the terminal 21. The shaft groove 2133 on the top, and use the force arm part 213 to use the support arm 212 as the fulcrum to generate leverage and link the elastic arm 2131 on the other side to stretch upwards, so that the flexible circuit board 4 can be separated from the insertion space of the insulating base body 1 11, and has the effect of simple and convenient operation, and at the same time improves the overall convenience of use.

Therefore, when the electrical connector of the present invention is in use, the key to improving the prior art lies in:

1. When the pulling element 3 of the utility model is pulled, it can be held against the inner top surface 122 of the inner terminal groove 12 of the insulating seat 1 through the pushing cam 311 on the shaft portion 31, and push down on the terminal 21- The shaft groove 2133 on one side produces elastic deformation, and can move the elastic arm 2131 on the other side to stretch upwards, and because the insulating seat body 1 is generally made of plastic material, the material is relatively hard and has a certain structural strength, and is not easy to deform. This way can ensure that the pushing cam 311 is against the terminal groove 12 to push the rotation stroke of the elastic terminal 21 more reliably without causing additional offset.

2. The utility model can stretch the elastic arm 2131 of the terminal 21 by pulling the pulling element 3, so as to facilitate the insertion of the flexible circuit board 4 into the interior of the insulating seat body 1, and then pull the pulling element 3 to reset Covering, at this time, the terminal 21 remains in a state of no force, and the contact portion 2111 on the base portion 211 can be held and contacted with the flexible circuit board 4 by the elastic restoring force of the elastic arm 2131 to form an electrical connection. In addition, it can prevent the clamping force of the terminal group 2 on the flexible circuit board 4 from being too large, and it is not easy to cause bending deformation during use, so that the overall stability and structural strength are better.

3. The pulling element 3 of the utility model can be used as an auxiliary part. Even if the pulling element 3 is damaged, broken or even dislodged due to insufficient strength of the plastic structure or improper operation during the pulling process, it can still pass through the elastic arm on the terminal 21. The predetermined distance between 2131 and the contact parts 2132 and 2111 of the base 211 is smaller than the thickness of the flexible circuit board 4, so that the electrical connection can be made by relative clamping contact with the flexible circuit board 4, which can ensure that the main functions of the electrical connector will not be affected , and maintain a good electrical contact effect.

4. The protrusions 313 on the two opposite outer sides of the pulling element 3 of the utility model are pivotally connected to the groove 13 corresponding to the insulating base 1, which not only prevents the pulling element 3 from breaking away from the insulating base 1, but also ensures Its stability when pulling; and when the user pulls upward on the pulling element 3, it can also stop the shaft groove 2133 of the terminal 21 by the flat resisting surface 3111 at the bottom of the push cam 311, so that the pulling element 3 Leave it on.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. , or equivalent, but all will fall within the protection scope of the present utility model.

Claims (6)

1. an electric connector is characterized in that, include insulating base frame, terminal group and pull element, wherein:

Described insulating base frame inside has the grafting space, and the place ahead, described grafting space is provided with the socket that can insert for default flexible circuit board, and is provided with a plurality of terminal grooves that are connected with the space of pegging graft at described socket rear;

Described terminal group has a plurality of terminals that are arranged in respectively in the terminal groove, and base portion one side of described terminal convexes with contact site, and described base portion towards above be extended with support arm, and described support arm side in addition is provided with arm of force portion, its arm of force portion one side is extended with and the elastic arm of described contact site formation less than the preset space length of default flexible circuit plate thickness towards described base portion direction, and described again elastic arm is concaved with axial trough in the side top in addition;

The described element of pulling is that activity is articulated in the terminal group rear, and described element one side of pulling is provided with axial region, and has on the described axial region and support terminal groove inner top surface and downward a plurality of ejection cams of upwards strutting in axial trough interlock elastic arm of pushing tow respectively.

2. electric connector according to claim 1, it is characterized in that, terminal groove the place ahead of described insulating base frame is provided with support slot, and the contact site of described each terminal of the terminal group outside is provided with the holding parts that can be embedded in the support slot, and the side in addition of described holding parts is provided with and can exposes and be fastened in the weld part of terminal groove outside.

3. electric connector according to claim 1 is characterized in that, terminal groove two outsides of described insulating base frame are provided with groove, and the axial region of pulling element is respectively equipped with the projection that can be articulated in the described groove in ejection cam two outsides.

4. electric connector according to claim 1, it is characterized in that, each terminal of described terminal group is worker's shape, and described each terminal has contact site on the elastic arm of arm of force portion one side, and is held on default flexible circuit board and forms and electrically connect relatively with contact site on the described base portion.

5. electric connector according to claim 1 is characterized in that the axial trough of described each terminal of terminal group is formed with the hook part outwardly, and described ejection cam inboard of pulling element be provided with for the hook part stretch into and socket after be one rotate place passage.

6. electric connector according to claim 1 is characterized in that, but described ejection cam bottom of pulling element is provided with the smooth supporting surface of block in the axial trough bottom surface.

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