TW201301668A - Electric connector - Google Patents

Abstract

To provide an electric connector capable of inhibiting rising of flux and preventing defect electric connector caused by the rising of flux. The electrical connector of the present invention includes: a housing (11) made of electrically insulating material and having a bottom wall (12) disposed on the circuit substrate (P); and a plurality of terminals (20) arranged and maintained in the housing, the housing is formed with terminal holding recess (18) that is arranged along the bottom wall to have an opening in the housing, the terminal is inserted in the aforementioned terminal holding recess (18), it is positioned in such a way that the solder connecting portion (24) projects toward the outside of the housing to be connected with the corresponding solder pads on the circuit substrate, the present invention is characterized in that the housing (11) is located under the bottom wall (12), and the bottom wall (12) is formed with a recess portion (12A) in the terminals (20) arrangement direction corresponding to at least one partial range of the terminals solder connecting portion (24), and extending from the position close to said corresponding pads (P2) or position connecting thereto, the recess portion (12) is formed with a corner portion (12A-1) at the recess bottom.

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to a connector that is disposed on a circuit substrate and that can be soldered to the circuit substrate.

A connector such as disclosed in Patent Document 1 is known as such a connector.

The connector of Patent Document 1 is placed on a circuit substrate by a bottom wall of a casing which is formed into a substantially cubic shape having a low height and which is held in plural along the bottom wall of the casing. The terminals are also fixed with metal fittings measured at both ends of the arrangement direction. The terminal and the fixing metal fitting are corresponding insertion holes that are inserted into and mounted in the wall behind the casing to form an opening.

The casing is formed such that a flat surface is formed on a lower surface of a bottom wall facing the circuit board, and the terminal and the fixing metal fitting are formed by maintaining a plate surface of the metal plate having the thickness in the arrangement direction. When the terminals and the fixing metal fittings are mounted in the housing, the solder connecting portions of the terminals and the solder fixing portions of the fixing metal fittings protrude toward the rear of the housing, and the lower end edges of the terminals are connected to the corresponding pads of the circuit board. And can be soldered and soldered.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4215265

Flux is used for soldering the solder joint and the solder joint, but there is often a problem that the flux rises. Since the melting point of the flux is lower than that of the solder and the viscosity is also low, it flows on the surface of the solder joint portion and the solder fixing portion, and rises in the gap with the casing, and the capillary phenomenon increases to reach the electronic component. There are cases where contact failure, malfunction, etc. occur. In particular, in order to obtain a fixed strength, the fixing metal fitting uses more solder than the terminal, so that there are many fluxes, and thus the flux rises easily. Furthermore, on the user side of the connector, the connector is sometimes soldered in a larger amount than the solder manufacturer recommends, in which case the amount of flux will also follow the solder. The amount increases, so the flux rises easily.

In the connector of Patent Document 1, a certain amount of flux flows from the surface of the solder joint portion and the solder fixing portion toward the rear end edge of the bottom wall of the approaching casing, and because the "wetting phenomenon" is on the bottom wall Moving below, but because the lower surface is all flat, the moving range will stop near the rear end edge, and most of the flux that rises in flux will eventually rise in the gap with the above casing, and form the above. The cause of the bad situation.

An object of the present invention is to provide a connector which can suppress such an increase in flux as much as possible and can prevent such a problem from being caused.

According to the present invention, the above problems can be solved by the first invention or the second invention described below.

<First invention>

The first invention is quite effective for a flux that is intended to rise at the solder joint portion of the terminal.

An electrical connector according to a first aspect of the present invention includes: a housing made of an electrically insulating material and disposed on a circuit board by a bottom wall; and a plurality of terminals arranged and held in the housing, the housing being along The bottom wall is formed with a terminal holding groove in which an opening is formed in the casing, and the terminal is inserted into the terminal holding groove at a position such that the solder connecting portion protrudes outward of the casing to be corresponding to the solder circuit on the circuit substrate. Department connection.

In the electrical connector, the housing of the present invention is formed on the lower surface of the bottom wall, at least a part of a range in which the terminal arrangement direction corresponds to the solder connection portion of the terminal, formed on the bottom wall, and A groove portion extending from a position corresponding to the above-described corresponding solder circuit portion or connected thereto is formed by a bottom portion of the groove.

According to the invention of this configuration, when the terminal is to be soldered to the corresponding solder circuit portion of the circuit substrate by the solder joint portion, the flux rising from the solder joint portion reaches before reaching the gap between the case and the terminal. Formed in the vicinity of the groove portion below the bottom wall of the casing, and infiltrated the groove portion inlet. The infiltrating flux forms a rounded pile at the corner portion of the groove portion due to the surface tension, and travels in a direction in which the groove portion extends. Due to the formation and travel of the stack of the fillet-shaped flux, most of the flux that is to be raised at the solder joint portion is attracted, and as a result, the amount of the flux entering the gap above the groove portion becomes zero. Or a sudden drop. So avoidable Avoid the bad conditions caused by the rise of flux.

In the present invention, the terminal may be formed in a plate shape in which the arrangement direction is the plate thickness direction. In this case, the solder connection portion of the terminal may enter the groove portion from the end edge of the bottom wall. Assuming this form, the flux to be raised at the solder joint portion easily enters between the portion of the solder joint portion in the groove portion and the inner surface of the groove portion due to the capillary phenomenon, and is guided into the groove.

In the present invention, in addition to the terminals, the connector may have a fixing metal fitting inserted into the metal fitting retaining groove formed in the housing.

<2nd invention>

In the second aspect of the invention, the connector has a fixing metal fitting in addition to the terminal, and is effective for the flux which is intended to rise in the solder fixing portion of the fixing metal fitting, and depending on the form, even for the first invention A flux that wants to rise at the solder joint of the terminal is also quite effective.

An electrical connector according to a second aspect of the present invention includes: a housing made of an electrically insulating material and disposed on a circuit board by a bottom wall; and a plurality of terminals arranged and held in the housing, or in addition to the terminal An outer fixing metal fitting, the housing is formed with a terminal holding groove formed in the housing and arranged along the bottom wall, or a metal fitting retaining groove outside the terminal arrangement range except the terminal holding groove The terminal and the fixing metal fitting are inserted into the terminal holding groove and the metal fitting retaining groove, and the position is such that the solder connecting portion and the solder fixing portion protrude outwardly from the housing, respectively, and the electric The corresponding solder circuit portions on the substrate are connected.

In the electrical connector, the housing of the present invention is formed on the lower surface of the bottom wall, at least a portion of a range corresponding to the solder fixing portion of the fixed metal fitting, and is formed from the lower surface of the bottom wall. Corresponding to the solder circuit portion or a groove portion extending at a position connected thereto, the groove portion is formed with a corner portion at the bottom of the groove.

According to the present invention having such a configuration, as in the case of the solder connecting portion of the terminal of the first aspect of the invention, the flux which rises along the surface of the solder fixing portion of the fixing metal fitting reaches the gap between the housing and the fixing metal fitting. It is introduced into the groove portion before, and is formed in a rounded shape at the corner portion of the groove portion. In this way, the flux hardly enters the above gap.

In the present invention, the housing may be formed under the bottom wall thereof at a position corresponding to at least a portion of the range of the solder connection portion of the terminal in the direction in which the terminals are arranged, or may be formed from a position close to or adjacent to the corresponding solder circuit portion. An extended groove portion. Thereby, not only the solder fixing portion of the fixing metal fitting but also the flux of the solder connecting portion of the terminal can be prevented from rising in the same manner as in the first invention. In particular, when the groove portion is formed to a position connected to the corresponding solder circuit portion, the flux is directly guided from the corresponding solder circuit portion to the groove portion.

In the present invention, at least the terminals of the terminal and the fixing metal fitting may be formed in a plate shape in which the terminal arrangement direction is the thickness direction. In this case, the solder connection portion of the terminal and the solder fixing of the fixing metal fitting may be fixed. A portion of the portion enters the groove portion from the end edge of the bottom wall.

It is assumed that this form is raised in the solder joint portion and the solder fixing portion. The flux easily enters between the solder joint portion in the groove portion and the portion of the solder fixing portion and the inner surface of the groove portion due to the capillary phenomenon, and is guided into the groove. This is the same as the case of the solder joint portion of the same aspect of the first invention.

<Form of the groove portion of the first invention and the second invention>

The groove portion of the first invention and the second invention itself can be in the following form.

‧ The groove portion extends in a right angle direction with respect to the end edge of the bottom wall of the casing.

‧ The groove portion extends at an oblique angle with respect to the end edge of the bottom wall of the casing.

‧ There are two kinds of inclination angles at the same time, and all of them form a lattice shape and extend.

‧ When the connector is placed on the circuit board, the groove portion extends from the range of the corresponding circuit portion of the circuit board to the outside of the range. According to this aspect, the flux adhering to the corresponding circuit portion can be sucked up to the groove portion. In the present invention, a circuit portion that can be soldered to a terminal of a connector such as a pad or a through hole of a circuit board is included.

According to the present invention, as described above, a groove portion extending from the rear edge of the bottom wall is formed on the lower surface of the bottom wall of the casing, and the solder joint portion of the terminal and the solder fixing portion of the fixing metal fitting are arranged in the terminal arrangement direction. At least a portion is located in the range of the groove portion, so that the flux that rises on the surface of the solder joint portion and the solder fixing portion adjacent to the rear end edge is guided to a position in front of the gap of the casing, and because Surface tension in the groove The corner portion forms a rounded infiltrated deposit, and most of the flux travels toward the front of the groove portion. As a result, the amount of flux entering the gap of the casing disappears or decreases, and even rises without reaching the electron. The flux of the part.

Hereinafter, embodiments of the present invention will be described based on the drawings.

The electrical connector of the present embodiment is an electrical connector for a circuit board that is disposed on a circuit board and has a terminal and a fixed metal fitting that can be soldered and soldered to the pad of the circuit board. FIG. 1 is a view of the connector viewed from above. Oblique view, Fig. 2 is a perspective view from below, and Fig. 3 is a cross-sectional view of the connector, (A) is a cross section of the terminal position, (B) is a cross section of the fixed metal fitting position, Fig. 4 and 5 is a partially enlarged perspective view of the lower surface of the bottom wall of the casing, FIG. 4 is from the side of the solder joint portion (opposite side of FIG. 2), and FIG. 5 is from the side of the solder fixing portion of the fixed metal fitting (Fig. 2) The ipsilateral) view of the figure.

The connector 1 for a circuit board (hereinafter referred to as "connector 1") of the present embodiment shown in FIGS. 1 and 2 is disposed on the circuit board P (see FIG. 3) and can be viewed from the rear (Fig. 1). The upper left side of the connector for connecting a flat conductor (not shown) for high-speed transmission has a connector main body 10 and a movable member 40 rotatably supported by the connector main body 10 as shown in FIG. The movable member 40 is rotatable between an open position in which the flat conductor can be inserted from the rear toward the front into the connector main body 10 and a closed position in which the inserted flat conductor is pressed. In the first to third figures, the movable member 40 is in the closed position and forms a lying posture, so the outer shape of the connector 1 is Form a rough cube.

The connector body 10 has a housing 11 made of an electrically insulating material, a terminal 20 held by the housing 11, and a fixing metal fitting 30. The terminal 20 is arranged in the longitudinal direction of the casing 11, and is held by the casing 11 in a plurality, and the fixing metal fitting 30 is held on both outer sides of the arrangement range of the plurality of terminals 20. .

The housing 11 integrally includes: a bottom wall 12 disposed on the circuit substrate and opposed to the circuit substrate; sidewalls 13 located at both ends in the terminal arrangement direction and rising from the bottom wall 12; a wall 14; and an upper wall 15 extending from an upper portion of the front wall 14 to a rear portion. Further, as shown in FIG. 3, in the rear half of the casing 11, the opening portion 16 which is opened upward and rearward is formed between the side walls 13 at the upper side of the bottom wall 12. The function of the opening portion 16 is as a housing portion for inserting a flat conductor and a space required for the arrangement and movement of the movable member 40.

The case 11 is formed along the inner surface of the side wall 13, and a metal fitting holding groove 17 for fixing the metal fitting 30 made of a metal plate is formed in the front-rear direction, and the fixing metal fitting 30 is attached from the rear. The fixed metal fitting 30 is a flat plate surface of the metal plate as shown in FIG. 3(B), is formed by punching the metal plate, and has a wrist portion 31 extending in the front-rear direction; and thereafter A solder fixing portion 32 whose end extends forward in parallel with the wrist portion 31. On the other hand, in the rear half of the casing 11 (the left half of the third drawing (A) and (B)), the opening portion 16 is formed as described above, in the front half of the casing (Fig. 3 (Fig. 3 ( B) right half), above and below The above-described metal fitting holding groove 17 is formed between the upper wall 15 and the bottom wall 12 in the front and rear direction. The metal fitting retaining groove 17 can be inserted into the wrist portion 31 of the fixing metal fitting 30, but a locking projection 31A is formed at the upper edge of the wrist portion 31, and the locking projection 31A is caught in the metal fitting to be concave. The upper surface of the groove 17 achieves the prevention of the fixing of the metal fitting 30. Further, the fixing of the metal fitting 30 to the casing 11 can be achieved by sandwiching the lower edge of the wrist portion 31 and the upper edge of the solder fixing portion 32 with the bottom wall 12 of the casing 11. The solder fixing portion 32 protrudes downward from the lower surface of the bottom wall 12 of the casing 11, and can be soldered to a corresponding pad (hereinafter referred to as "corresponding pad") P1 as a corresponding solder circuit portion of the circuit board P. It is used for fixing the housing 11. In the present embodiment, as shown in Fig. 3(B), the solder fixing portion 32 is located within the range of the corresponding pad P1.

The casing 11 is formed between the metal fitting holding grooves 17 on the inner side of the side walls 13 respectively. As shown in Fig. 1, a plurality of terminal holding grooves 18 for accommodating and holding the terminals 20 are arranged. Similarly to the above-described fixing metal fitting 30, the terminal 20 is formed by maintaining a flat plate surface of the metal plate, and therefore the terminal holding groove 18 is also formed into a slit-like groove suitable for the thickness thereof. The terminal holding groove 18 is formed in a direction perpendicular to the plane of the paper as shown in FIG. 3(A), and is formed in a plurality of groove widths corresponding to the thickness of the terminal 20, and is oriented in the front-rear direction. 3 (A) in the left-right direction).

The terminal holding groove 18 penetrates the front wall 14 forward and backward between the upper wall 15 and the bottom wall 12 of the front half of the casing 11, and extends to the above-mentioned bottom wall 12 in which the rear half of the opening 16 is formed. The above way The opening portion 16 is worn.

The terminal 20 held by the terminal holding groove 18 is a terminal that rotatably supports the movable member 40, and as shown in FIG. 3(A), the terminal 20 has a lower wrist 21 above the lower arm 21. The upper arm portion 22 that extends in the front-rear direction, the connecting portion 23 that connects the front end portions of the lower arm portion 21 and the upper arm portion 22, and the solder connecting portion 24 that protrudes forward from the connecting portion. The solder connecting portion 24 has its lower edge surface-contacted with the corresponding pad P2 of the circuit board, and is located in the range of the corresponding pad P2.

The lower arm portion 21 has a projecting contact portion 21A at the rear end. The lower arm portion 21 has a narrow width and is elastically deflectable at a rear portion by a gap amount from the upper surface of the bottom wall 12.

The upper arm portion 22 coupled by the connecting portion 23 extends rearward from the upper end of the connecting portion 23 substantially parallel to the lower arm portion 21. The upper arm portion 22 extends rearward, and a concave curved support portion 22B is formed on the lower edge of the rear end side. Further, at the upper edge of the upper arm portion 22, two locking projections 22A which are locked to the upper surface of the recess of the terminal holding recess 18 formed by the upper wall 15 are provided. The width of the upper arm portion 22 (the vertical dimension of the drawing surface) is wider than the lower arm portion 21 located below it, and is made high rigidity.

The movable member 40 is made of the same electrically insulating material as the casing 11, and has a width spanning between the side walls 13 of the casing 11 as shown in Figs. 1 and 2, and is disposed in the casing 11. Opening portion 16. The movable member 40 is rotatably supported between the open position and the closed position as described above. The closed position is a movable structure as shown in Fig. 3 (A) and (B). When the member 40 is in the lying posture, the open position is the state in which the movable member 40 is supported by the support portion 22B of the wrist portion 22 above the terminal 20, and the center of the support portion 22B is taken from the third figure (A), (B). The posture is formed when the longitudinal posture is rotated by approximately 90° in the clockwise direction. In the closed position, the movable member 40 is formed at a position corresponding to the terminal 20 in the terminal arrangement direction (the direction perpendicular to the paper surface) as shown in FIG. 3(A), and a slit portion 41 is formed in a portion forming the right portion. The slit groove portion 41 is vertically penetrated in Fig. 3(A), and is provided at the right end position for the opposite direction of the slit groove portion 41 (opposite direction in the direction perpendicular to the plane of the paper). The shaft portions 42 of each other. The shaft portion 42 has a substantially circular peripheral surface, and is rotatably supported in a support portion 22B formed in a concavely curved shape on the wrist portion 22 above the terminal 20. The movable member 40 is rotatably supported by the housing at both ends in the width direction (terminal arrangement direction) by a shaft portion (not shown). The movable member 40 is formed in the left portion where the slit portion 41 is not formed in FIGS. 3(A) and (B), and is formed in the closed position in the closed position in which the third figure is formed. The upper wall 15 of the body 11 is at the same horizontal position, but protrudes upward from the upper wall 15 in the open position forming the longitudinal posture. The movable member 40 is rotatable between the open position and the closed position by the operation portion 43 receiving the operating force.

The movable member 40 is a pressurizing portion that presses a flat conductor (not shown) at the closed position from the lower end portion of the right end of the closed position shown in Fig. 3(A) to the lower surface of the operating portion 43.

The bottom wall 12 of the casing 11 is as shown in Fig. 2, and groove portions 12A and 12B are formed on the lower surface thereof. The groove portion 12A and the groove portion 12B are at the terminals The arrangement direction is formed corresponding to the position of each of the terminals 20 and the respective fixing metal fittings 30 extending in the front-rear direction.

The groove portion 12A extends rearward from the front end edge of the bottom wall 12 of the solder joint portion 24 of the terminal 20 located at the front side, and extends to the intermediate portion. The groove portion 12A extends rearward in a direction perpendicular to the front end edge of the bottom wall 12, and as shown in Fig. 4(B), the cross section is a rectangle having a corner portion 12A-1 formed at the bottom of the groove.

On the other hand, the groove portion 12B is formed to extend forward from the front end position of the solder fixing portion 32 of the fixed metal fitting 30 located at the rear. The lower surface of the bottom wall 12 of the casing 11 is in a region where the fixing metal fitting 30 is located in the terminal arrangement direction, and is arranged in a segment shape compared with the terminal 20, and is formed in the above-mentioned region to have a lower arrangement area than the terminal. The two parallel rib portions 12C of the protruding amount of the level are formed, whereby the groove portion 12B is formed between the two ridge portions 12C. Also as shown in Fig. 5, the groove portion 12B has the same groove width as that of the fixing metal fitting 30, and therefore, the groove width is larger than the groove portion 12A. In the groove portion 12B, in other words, the rib portion 12C extends from the position on the front end side of the solder fixing portion 32 including the fixing metal fitting 30 to the front end edge of the bottom wall 12 in the front-rear direction. The groove portion 12B extends in a direction perpendicular to the front end edge of the bottom wall 12, and the bottom portion of the groove has the same corner portion as the groove portion 12A. In the above-described fixed metal fitting 30 of the present embodiment, as described above, the wrist portion 31 is inserted into the metal fitting holding groove 17 of the casing 11 and held by the casing 11, but at the same time, the wrist of the metal fitting 30 is fixed. The solder fixing portion 32 will enter under the bottom wall 12 of the housing 11. The groove portion 12B is thus guided by the groove portion 12B when the fixing metal fitting 30 is inserted and inserted, and the bottom wall 12 is sandwiched by the wrist portion 31 and the solder fixing portion 32, thereby facilitating the mounting. Increased strength and positional assurance.

In the connector 1 of the present embodiment, as shown in FIGS. 3(A) and 3(B), the terminal 20 can be soldered to the corresponding pad P2 in the range of the corresponding pad P2 of the circuit board P by the solder connecting portion 24. (Refer to solder W2). At the time of soldering, the flux having a lower melting point than the solder itself rises from the surface of the solder joint portion 24 from the corresponding pad P2 because of its fluidity and viscosity. However, before reaching the upper edge of the solder joint portion 24, the flux enters the groove portion at the leading edge side inlet portion of the groove portion 12A formed under the bottom wall 12 of the casing 11 at a position below it. 12A, and accumulation of flux is formed in the groove portion 12A. This stacking is as shown in Fig. 4(B), and the corner portion 12A-1 at the bottom of the groove of the groove portion 12A is rounded by the surface tension of the flux (refer to symbol F of Fig. 4(B)). A larger amount is formed. Then, the accumulation of the flux extends toward the rear of the groove portion 12A to extend its range. Therefore, most of the flux to be raised at the solder joint portion 24 is guided into the above-described groove portion 12A, and thus does not reach the upper edge of the above-described solder joint portion 24. As a result, the flux does not reach the contact portion 21A of the terminal 20, and the trouble caused by the rise of the flux does not occur.

On the other hand, the fixed metal fitting 30 can be soldered to the corresponding pad P1 by the solder connecting portion 32 in the range of the corresponding pad P1 of the circuit board P (refer to the solder W1). At this time, as in the case of the terminal 20, the flux The surface of the solder fixing portion 32 rises, but since the front end portion of the solder fixing portion 32 extends into the groove portion 12B, the flux enters the front end portion and the inner surface of the groove portion 12B due to the capillary phenomenon. A slight gap between them. The flux attracted to the gap travels toward the groove portion 12B that is connected to the target thereof, and as in the case of the groove portion 12A, the groove portion 12B further moves toward the target, that is, toward the front. Thus, most of the flux is deposited in the groove portion 12B and guided to the groove portion 12B, and as in the case of the terminal 20, the trouble caused by the rise of the flux can be avoided.

In the present invention, the terminal holding groove 18 and the metal fitting retaining groove 17 are formed on the upper side of the bottom wall 12 of the casing 11, but the groove portions 12A, 12B are formed correspondingly on the lower side (lower side) of the bottom wall 12. Therefore, in the molding of the casing or the like, the tendency to form a concave shape on the upper side of the bottom wall 12 can be eliminated or reduced.

The present invention is not limited to the form of the groove portion illustrated and described in FIGS. 2 to 5, and various modifications are possible.

For example, in the form shown in FIGS. 2 to 5, the groove portions 12A, 12B extending from the position of the solder connecting portion 24 of the terminal 20 and the solder fixing portion 32 of the fixing metal fitting 30 are relative to the housing 11. The front end edge of the bottom wall 12 extends in a right angle direction, but in the form shown in Fig. 6, the groove portion 12A' is only the direction X extending from the groove portion 12A of Figs. 2 to 5 Extends at an inclination of the angle θ. With this inclination angle, even if the bottom wall 12 of the casing 11 has a small front and rear direction, the connector can be enlarged in addition to the groove portion at the end of the arrangement direction. The length of the groove portion 12'.

Next, the form of Fig. 7 is extended at an opposite inclination angle to the both sides with respect to the above-described direction X of Fig. 6, so that the entire groove portion 12" is formed in a lattice shape. Thereby, even in the arrangement direction of the terminals is located at the end The groove portion of the portion can also sufficiently ensure its length.

This angle of inclination is not only a groove portion close to the solder joint portion of the terminal but also a groove portion close to the solder fixing portion of the fixed metal fitting. The groove portion of the present invention may also be adjacent to the solder joint portion or the solder fixing portion, or allow a part of these to enter.

Furthermore, the groove portion may be provided close to the corresponding pad of the circuit substrate where the solder connection portion or the solder fixing portion is located, or may be connected to the range of the corresponding pad. In the case where the connection is made in the range corresponding to the pad, the flux not only enters the groove portion via the solder connection portion or the solder fixing portion, but also is directly guided from the corresponding pad to the groove portion.

Furthermore, the present invention is also applicable to a connector having only a terminal without a fixed metal fitting, or a connector having both, and in this case, a groove portion may be provided for either of the two, or Set for both. The present invention is not limited to the connector shown in the drawings, and any connector that can be soldered to a circuit board can be applied. For example, the connector can be separately mounted on two circuit substrates and fitted to each other. A connector that electrically connects the circuit substrates to each other.

Further, in the present invention, the groove portion formed on the lower surface of the bottom wall of the casing may not have a rectangular shape in cross section, but may have a triangular shape, for example, a V-shaped groove, as long as it has a corner portion.

1‧‧‧Connector

11‧‧‧Shell

12‧‧‧ bottom wall

12A, 12’, 12” ‧‧‧ Groove

12A-1‧‧‧ corner

17‧‧‧Metal fittings keep grooves

18‧‧‧ terminal retention groove

20‧‧‧ terminals

24‧‧‧ solder joint

30‧‧‧Fixed metal fittings

32‧‧‧ Solder fixing department

P‧‧‧ circuit substrate

P1, P2‧‧‧ corresponding pads

Fig. 1 is a perspective view of a connector according to an embodiment of the present invention as seen from above.

Fig. 2 is a perspective view of the connector of Fig. 1 viewed from below.

Fig. 3 is a cross-sectional view showing the connector shown in Fig. 1 and Fig. 2, wherein (A) is a terminal position and (B) is a position at which a metal fitting is fixed.

Fig. 4(A) is an enlarged perspective view of a groove portion formed corresponding to the terminal, and Fig. 4(B) is an enlarged cross-sectional view of the groove portion.

Fig. 5 is an enlarged perspective view corresponding to a groove portion formed by a fixing metal fitting.

Fig. 6 is a perspective view showing a groove portion of another embodiment of the present invention.

Fig. 7 is a perspective view showing a groove portion of still another embodiment of the present invention.

1‧‧‧Connector

11‧‧‧Shell

12‧‧‧ bottom wall

12A‧‧‧ Groove

12B‧‧‧ Groove

12C‧‧‧Bulge

20‧‧‧ terminals

24‧‧‧ solder joint

30‧‧‧Fixed metal fittings

32‧‧‧ Solder fixing department

40‧‧‧ movable components

Claims (12)

An electrical connector comprising: a housing made of an electrically insulating material and disposed on a circuit substrate by a bottom wall; and a plurality of terminals arranged and held in the housing, the housing being along the bottom The wall arrangement is formed with a terminal holding groove in which an opening is formed in the housing, and the terminal is inserted into the terminal holding groove at a position such that the solder connecting portion protrudes outside the housing to be connected to the corresponding solder circuit portion on the circuit substrate. The electrical connector is characterized in that: the housing is formed on the bottom surface of the bottom wall, and at least a part of a range of the solder connection portion of the terminal in the direction in which the terminals are arranged, formed on the bottom wall, and A groove portion extending in a position corresponding to the above-mentioned corresponding solder circuit portion or connected thereto is formed, and the groove portion is formed with a corner portion at the bottom of the groove. The electrical connector according to the first aspect of the invention, wherein the terminal is formed in a plate shape in a direction in which the arrangement direction is a plate thickness. The electrical connector of claim 1 or 2, wherein the solder connection portion of the terminal enters the recess portion from the end edge of the bottom wall. The electrical connector of claim 1 or 2, wherein the connector has a fixed metal fitting inserted into the metal fitting retaining groove formed in the housing in addition to the terminal. An electrical connector comprising: a housing made of an electrically insulating material and disposed on a circuit substrate by a bottom wall; and a plurality of terminals arranged and held in the housing, or in addition to the terminal Fixed metal The housing is formed with a terminal holding groove formed in the housing and arranged along the bottom wall, or a metal fitting retaining groove, a terminal and a fixing outside the terminal arrangement range except the terminal holding groove The metal fitting is inserted into the terminal holding groove and the metal fitting retaining groove at a position such that the solder connecting portion and the solder fixing portion protrude outwardly from the housing to be connected to the corresponding solder circuit portion on the circuit board, and is characterized in that The casing is formed on a lower surface of the bottom wall thereof at a position corresponding to at least a part of a range of the solder fixing portion of the fixing metal fitting, and a position close to the corresponding solder circuit portion or connected thereto is formed under the bottom wall An extended groove portion having a corner portion formed at the bottom of the groove. The electrical connector according to claim 5, wherein the casing is formed on the lower surface of the bottom wall thereof in a range in which the direction in which the terminals are arranged corresponds to at least a part of the range of the solder joint portion of the terminal. A groove portion extending corresponding to a position corresponding to the solder circuit portion or connected thereto. The electrical connector according to claim 5, wherein at least one of the terminal and the fixed metal fitting is formed in a plate shape in which the direction in which the terminals are arranged is a plate thickness direction. The electrical connector according to claim 6, wherein the solder joint portion of the terminal and a portion of the solder fixing portion of the fixed metal fitting enter the recess portion from the edge of the bottom wall. The electrical connector according to any one of claims 1 to 5, wherein the recessed portion extends in a right angle direction with respect to an end edge of the bottom wall of the casing. For example, any of the first, fifth and sixth items of the patent application scope The electrical connector of the above, wherein the groove portion extends at an oblique angle with respect to an end edge of the bottom wall of the housing. The electrical connector according to claim 10, wherein the groove portion has two kinds of inclination angles at the same time, and the entire portion is formed in a lattice shape and extends. The electrical connector according to any one of claims 1 to 5, wherein the recessed portion is a range from a corresponding circuit portion of the circuit board when the connector is disposed on the circuit board. The inside extends beyond the range.