阅读说明：本技术 一种可防止端子漏焊的连接器结构 (Connector structure capable of preventing terminal from welding missing ) 是由 刘振华 武永红 于 2020-06-24 设计创作，主要内容包括：本发明提供一种可防止端子漏焊的连接器结构,包括绝缘胶壳、上排端子组、下排端子组,绝缘胶壳延其长度方向的相对两侧均设置有固持件插槽,两侧固持件插槽内均插设有固持件,固持件包括插入部和焊接部,焊接部一体成型在插入部的底部并且向外延伸出绝缘胶壳外,固持件插槽的高度大于固持件的高度,绝缘胶壳的相对两侧面均设置有与焊接部对应的限位口,限位口与固持件插槽连通；当焊接部处于最低位时,固持件的下表面低于上排端子组和下排端子组的焊接面；当焊接部处于最高位时,焊接部的下表面高于绝缘胶壳的下表面。本发明的有益效果是：在确保产品质量的前提下,直接降低生产高共面度端子连接器的难度。(The invention provides a connector structure capable of preventing terminals from being welded in a missing manner, which comprises an insulating rubber shell, an upper row of terminal groups and a lower row of terminal groups, wherein two opposite sides of the insulating rubber shell along the length direction of the insulating rubber shell are respectively provided with a fixing piece slot, fixing pieces are inserted in the fixing piece slots on the two sides, each fixing piece comprises an inserting part and a welding part, the welding part is integrally formed at the bottom of the inserting part and outwards extends out of the insulating rubber shell, the height of each fixing piece slot is greater than that of each fixing piece, two opposite side surfaces of the insulating rubber shell are respectively provided with a limiting port corresponding to the welding part, and the limiting ports are communicated with the fixing piece slots; when the welding part is positioned at the lowest position, the lower surface of the holding piece is lower than the welding surfaces of the upper row terminal group and the lower row terminal group; when the welding part is at the highest position, the lower surface of the welding part is higher than the lower surface of the insulating rubber shell. The invention has the beneficial effects that: on the premise of ensuring the product quality, the difficulty of producing the high coplanarity terminal connector is directly reduced.)

1. A connector structure capable of preventing terminal from welding missing comprises an insulating rubber shell (10), an upper row of terminal groups (28) and a lower row of terminal groups (11), wherein the upper row of terminal groups (28) and the lower row of terminal groups (11) are oppositely installed in the insulating rubber shell (10), and one side of the insulating rubber shell (10) is formed with a card slot (26), and is characterized in that: the insulating rubber shell (10) is provided with fixing piece slots (18) on two opposite sides along the length direction, fixing pieces (12) are inserted into the fixing piece slots (18) on the two sides, each fixing piece (12) comprises an insertion part (17) and a welding part (19), the welding parts (19) are integrally formed at the bottom of the insertion part (17) and extend out of the insulating rubber shell (10), the height of each fixing piece slot (18) is larger than that of each fixing piece (12), limiting ports (27) corresponding to the welding parts (19) are arranged on two opposite side faces of the insulating rubber shell (10), and the limiting ports (27) are communicated with the fixing piece slots (18); when the welding part (19) is at the lowest position, the lower surface of the retainer (12) is lower than the welding surfaces of the upper row terminal group (28) and the lower row terminal group (11); when the welding part (19) is at the highest position, the lower surface of the welding part (19) is higher than the lower surface of the insulating rubber shell (10).

2. The structure of a connector capable of preventing terminal solder skip as set forth in claim 1, wherein: the two opposite sides in the fixing piece inserting groove (18) are provided with transverse extending grooves (15); two opposite sides of the insertion part (17) extend downwards to form limiting arms (16) matched with the transverse extending grooves (15), and the free ends of the limiting arms (16) are respectively provided with a protruding part (14) embedded in the transverse extending grooves (15).

3. The structure of claim 2, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: and guide convex blocks (29) corresponding to the shapes of the retainer inserting grooves (18) are transversely formed on two opposite sides of the inserting part (17) close to the welding part (19) in an extending mode.

4. A connector structure capable of preventing terminal skip-welding according to any one of claims 1 to 3, characterized in that: the upper row terminal group (28) is formed by sequentially and linearly arranging a plurality of terminals A (20), and the lower row terminal group (11) is formed by sequentially and linearly arranging a plurality of terminals B (13); the terminal A (20) and the terminal B (13) are both provided in an F shape; the terminal A (20) and the terminal B (13) are arranged in the insulating rubber shell (10) in a mode of staggered front and back positions.

5. The structure of claim 4, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: the upper surface and the lower surface of the inlet of the card slot (26) are both provided with inclined leading-in surfaces (21).

6. The structure of claim 5, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: a sink groove position (24) is formed at the bottom in the card slot (26); and a card inserting bearing platform (25) is formed at the front part of the insulating rubber shell (10) positioned at the inlet of the card inserting groove (26).

7. The structure of claim 5, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: the inclination of the inclined lead-in surfaces (21) is set to 25 degrees.

8. The structure of claim 6, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: and two opposite side surfaces of the insulating rubber shell (10) extend outwards along the width direction to form protection convex blocks (22).

9. The structure of claim 4, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: and the lower part of the terminal A (20) is provided with a positioning convex particle (23).

10. The structure of claim 4, wherein the terminal is prevented from being soldered by a solder skip, and the structure comprises: and the lower part of the terminal B (13) is provided with a positioning convex particle (23).

Technical Field

The invention relates to the technical field of connector processing, in particular to a connector structure capable of preventing terminal welding leakage.

Background

The chinese patent with the grant publication number CN202564653U and the grant publication date of 2012, 11 and 28 is named as an electrical connector, which includes an insulative housing and a terminal retained in the housing; the terminal comprises a contact part, a fixed part and a welding foot, wherein the contact part partially extends into the accommodating space, the fixed part is fixedly arranged on the side wall of the insulating body, the welding foot extends out of the insulating body, the two end walls of the insulating body are respectively provided with a metal fixing piece in an integrated mode, and the metal fixing piece comprises a main body part fixedly arranged in the end wall of the insulating body, a fixing piece vertically connected with the bottom end edge of the main body part and a welding part extending out of the insulating body.

The utility model discloses a beneficial effect is: the metal fixing piece and the lower surface of the insulating body are in coplanar design, so that the flatness of the electric connector assembled on a circuit board is facilitated.

When the connector is welded on a circuit board, the condition that part of the terminals are subjected to welding leakage still exists; if hope to stop the terminal condition of leaking to weld, just need in advance all terminals to the same coplanarity, however, this requires very high to the machining precision of enterprise, leads to the promotion of manufacturing cost by a wide margin to, after accomplishing the welding action, in order to ensure that there is not the condition of leaking to weld in each terminal, still need carry out accurate detection, also increased product quality detection's work load. In view of this situation, a solution is urgently needed.

Disclosure of Invention

Based on this, the present invention provides a connector structure capable of preventing terminal from missing soldering, wherein the floatable retainers are disposed on two opposite sides of the connector, so that the soldering portions of the terminals can contact with solder paste according to the gravity principle of free fall, thereby directly reducing the difficulty of producing the terminal connector with high coplanarity on the premise of ensuring the product quality.

The invention provides a connector structure capable of preventing terminals from being welded in a missing manner, which comprises an insulating rubber shell, an upper row of terminal groups and a lower row of terminal groups, wherein the upper row of terminal groups and the lower row of terminal groups are oppositely arranged in the insulating rubber shell; when the welding part is at the lowest position, the lower surface of the holding piece is lower than the welding surfaces of the upper row of terminal groups and the lower row of terminal groups; when the welding part is located at the highest position, the lower surface of the welding part is higher than the lower surface of the insulating rubber shell.

Preferably, two opposite sides in the holding piece slot are provided with transverse extending slots; two opposite sides of the insertion part extend downwards to form limiting arms matched with the transverse extending grooves, and the free ends of the limiting arms are provided with protruding parts embedded in the transverse extending grooves.

Preferably, two opposite sides of the insertion portion near the welding portion are transversely extended to form guide protrusions corresponding to the shape of the holder slot.

Preferably, the upper row terminal group is formed by sequentially and linearly arranging a plurality of terminals A, and the lower row terminal group is formed by sequentially and linearly arranging a plurality of terminals B; the terminal A and the terminal B are both arranged in an F shape; and the terminal A and the terminal B are arranged in the insulating rubber shell in a staggered manner.

Preferably, the upper surface and the lower surface of the inlet of the card slot are both provided with inclined leading-in surfaces.

As a preferred scheme, a sinking groove position is formed at the bottom in the card slot; and the insulating rubber shell is positioned at the front part of the slot inlet to form a card inserting and bearing platform.

Preferably, the inclination of each of the inclined lead-in surfaces is set to 25 °.

Preferably, the two opposite side surfaces of the insulating rubber shell extend outwards along the width direction of the insulating rubber shell to form protection bumps.

Preferably, the lower part of the terminal a is provided with a positioning convex grain.

Preferably, the lower part of the terminal B is provided with a positioning convex grain.

The invention has the beneficial effects that:

1. the height of the holding piece slot is greater than that of the holding piece, and when the welding part is at the lowest position, the lower surface of the holding piece is lower than the welding surfaces of the upper row of terminal group and the lower row of terminal group; when the welding part is at the highest position, the lower surface of the welding part is higher than the lower surface of the insulating rubber shell, so that the insulating rubber shell can float up and down along the slot of the fixing part under the supporting action of the fixing part, when the connector is assembled on a circuit board, after the tin paste is spotted, the bottoms of the welding parts at two sides are firstly contacted with the tin paste, then, under the action of gravity, the insulating rubber shell synchronously drives the upper row of terminal group and the lower row of terminal group to descend towards the direction of the tin paste, so that the welding surfaces of the upper row of terminal group and the lower row of terminal group can be contacted with the tin paste, the condition of terminal welding leakage is avoided, the difficulty of producing the high-coplanarity terminal connector is directly reduced on the premise of ensuring the product quality, the coplanarity of all terminals is not required to be controlled, and the production efficiency is improved;

2. the opposite two sides of the inserting part extend downwards to form limiting arms matched with the transverse extending grooves, the free ends of the limiting arms are respectively provided with a convex part embedded in the transverse extending grooves, and after the fixing piece is inserted into the fixing piece inserting groove, the convex parts are embedded into the transverse extending grooves to prevent the fixing piece from moving downwards;

3. the opposite two sides of the position of the insertion part close to the welding part extend transversely to form guide convex blocks corresponding to the shape of the holding piece slot, so that the holding piece is prevented from shaking left and right in the holding piece slot;

4. the terminal A and the terminal B are arranged in the insulating rubber shell in a staggered mode in the front and back positions, so that the contact points of the terminal A and the terminal B are also staggered in the front and back positions, and when the terminal A and the terminal B are inserted at a certain angle, the terminal A and the terminal B cannot be touched before being horizontally placed, so that zero insertion and extraction force can be realized, and the service life of a product is prolonged;

5. the upper surface and the lower surface of the inlet of the card slot are provided with inclined lead-in surfaces, so that the insertion action when an angled card is inserted can be guided conveniently;

6. the bottom in the card slot is formed with sunken trench, is convenient for take the angle to pass through the contact with sunken trench when inserting the card to feel the degree of target in place of inserting.

Drawings

Fig. 1 is a schematic structural view of the present invention (with some terminals omitted).

Fig. 2 is a partial structural schematic diagram of the present invention.

Fig. 3 is a cross-sectional view of the present invention (showing the relative structural relationship of the retainer slot and the retainer).

Fig. 4 is a perspective view of the holder.

Fig. 5 is a view showing a relative structure of the terminal a and the terminal B.

Fig. 6 is a sectional view of the present invention (showing a sectional structure of the card insertion slot).

The reference signs are: the plug-in card connector comprises an insulating rubber shell 10, a lower row terminal group 11, a holding piece 12, a terminal B13, a bulge 14, a transverse extending groove 15, a limiting arm 16, an inserting part 17, a welding part 19, a holding piece slot 18, a terminal A20, an inclined leading-in surface 21, a protecting bump 22, a positioning convex particle 23, a sinking slot position 24, a plug-in card receiving platform 25, a plug-in card slot 26, a limiting port 27, an upper row terminal group 28 and a guiding bump 29.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Please refer to fig. 1-6: a connector structure capable of preventing terminal from welding missing comprises an insulating rubber shell 10, an upper row of terminal groups 28 and a lower row of terminal groups 11, wherein the upper row of terminal groups 28 and the lower row of terminal groups 11 are oppositely arranged in the insulating rubber shell 10, and a card inserting groove 26 is formed in one side of the insulating rubber shell 10. The upper and lower surfaces at the entrance of card slot 26 are provided with inclined lead-in surfaces 21. The inclination of the inclined lead-in surfaces 21 is set to 25 degrees, which is convenient for guiding the insertion action when inserting the card with the angle.

A sink groove 24 is formed at the bottom in the card slot 26; the housing 10 is formed with a card receiving platform 25 at the front of the entrance to the card slot 26. The card can be conveniently inserted at an angle through the contact with the sink groove position, so that the in-place degree of the card insertion can be known.

The opposite two sides of the insulating rubber shell 10 along the length direction are respectively provided with a fixing piece slot 18, fixing pieces 12 are inserted into the fixing piece slots 18 on the two sides, each fixing piece 12 comprises an insertion part 17 and a welding part 19, the welding part 19 is integrally formed at the bottom of the insertion part 17 and extends outwards out of the insulating rubber shell 10, the height of each fixing piece slot 18 is larger than that of each fixing piece 12, the opposite two side surfaces of the insulating rubber shell 10 are respectively provided with a limiting port 27 corresponding to the welding part 19, and the limiting ports 27 are communicated with the fixing piece slots 18; when the welding portion 19 is at the lowest position, the lower surface of the retainer 12 is lower than the welding surfaces of the upper row terminal group 28 and the lower row terminal group 11; when the welding part 19 is at the highest position, the lower surface of the welding part 19 is higher than the lower surface of the insulating rubber case 10. Through the structure setting, make the insulating rubber shell realize the fluctuation along the holding piece slot under the supporting force of holding piece, when assembling the connector on the circuit board, after the point goes up the tin cream, the bottom of both sides welding part is earlier with the contact of tin cream, then, under the effort of gravity, the insulating rubber shell drives in step and goes up terminal group and lower terminal group and descend to the direction of tin cream down, thereby make the face of weld of going up terminal group and lower terminal group all can with the contact of tin cream, the condition of terminal hourglass welding is avoided appearing, thereby realized guaranteeing under product quality's the prerequisite, the direct degree of difficulty that has reduced the high coplanarity terminal connector of production, and need not to carry out the management and control of coplanarity to whole terminals, thereby promote production efficiency.

The opposite sides in the holder slot 18 are provided with transverse extending slots 15; two opposite sides of the insertion part 17 are extended downwards to form limiting arms 16 matched with the transverse extending grooves 15, and the free ends of the limiting arms 16 are respectively provided with a convex part 14 embedded in the transverse extending grooves 15. After the retainer is inserted into the retainer slot, the lug boss is embedded into the transverse extending slot to prevent the retainer from moving downwards.

The opposite sides of the insertion portion 17 near the welding portion 19 are transversely extended to form guiding protrusions 29 corresponding to the shape of the holder slot 18, so as to prevent the holder from shaking left and right in the holder slot.

The upper row terminal group 28 is formed by a plurality of terminals A20 which are sequentially and linearly arranged, and the lower row terminal group 11 is formed by a plurality of terminals B13 which are sequentially and linearly arranged; the terminal a20 and the terminal B13 are both provided in an F shape; the terminal a20 and the terminal B13 are mounted in the housing 10 in a staggered manner. Make terminal A and terminal B's contact point also realized the setting of staggering of front and back position, when taking certain angle to insert, the card can not touch terminal A and terminal B before the level is placed to can realize zero insertion and extraction power, promote the life of product.

The opposite two side surfaces of the insulating rubber case 10 are both formed with the protection bumps 22 extending outwards along the width direction thereof, and the welding positions of the terminal a20 and the terminal B13 are protected by the protection bumps 22, so that the packaging material is ensured to only contact the protection bumps 22 and not to touch the welding positions when the product is packaged.

The lower part of the terminal A20 is provided with a positioning convex particle 23. The lower part of the terminal B13 is provided with a positioning convex particle 23. The positioning convex particles 23 replace the guide thorns fixed with the insulating rubber shell on the surface of the terminal, so that the impedance performance is improved.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.