JPH10144416A - Connector for substrate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold terminal metal fittings in a state of not being protruded to the outside of a connector housing and protrude the terminal metal fittings when it is mounted in a circuit board. SOLUTION: In a state of not being mounted in a circuit board, an extension/ contraction member 30 is temporarily locked to a connector housing 11, a board connection terminal 25 of terminal metal fittings 20 are positioned in the interior of the connector housing 11. The extension/contraction member 30, when it is displaced from a temporary lock position to a regular assembly position, is engaged with a flexible pressing piece 17, to be deflected to the inside, a flexed part 23A is pressed by the flexible depressing piece 17 and a flexible connection piece 23 is extension-deformed. According to extension deformation of this flexible connection piece 23, the board connection terminal 25 is protruded from the connector housing 11, to be insertable in a through hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board connector mounted on a circuit board.

[0002]

2. Description of the Related Art A connector shown in FIG. 14 is known as a board connector. The board connector 1 includes a connector housing 2 fixed to a circuit board P, and terminal fittings 4 housed in a cavity 3 of the connector housing 2. The terminal fitting 4 includes a box-shaped terminal main body 4A locked by a lance 3A at a rear end portion in the cavity 3, an elastically bendable stress relaxation section 4B connected to the terminal main body 4A in a shape curved in a mountain shape, It is composed of a board connection terminal 4C which is substantially linearly connected to the stress relaxation portion 4B and protrudes from the connector housing 2. When the connector 1 is mounted on the circuit board P, the connector housing 2 is fixed at a predetermined position on the circuit board P, the board connection terminals 4C are inserted into the through holes H of the circuit board P, and the board connection terminals 4C are soldered. (Not shown) and connected to a circuit (not shown) on the circuit board P.

[0003]

The above-mentioned conventional board connector 1 has a terminal fitting 4 before being attached to a circuit board P.
Of the board connection terminal 4C of the connector housing 2 is projected outside. Therefore, there is a problem that another member interferes with the board connection terminal 4C during storage or transportation. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a board connector capable of keeping a board connecting terminal in a non-projecting state.

[0004]

According to a first aspect of the present invention, there is provided a connector housing which is mounted on a circuit board, a terminal body held by the connector housing, and a bent portion which is connected to the terminal body and which can be extended and deformed. A flexible connecting piece;
In the non-extended state of the flexible connecting piece formed at the distal end of the flexible connecting piece, the board connecting terminal located inside the connector housing and the bent portion are pressed to expand and deform the flexible connecting piece. And an extension member, wherein the flexible connection piece is extended and deformed by the extension member so that the board connection terminal is protruded outside the connector housing so that connection to the circuit board is enabled. It has a characteristic in the place described above.

A second aspect of the present invention is characterized in that, in the first aspect of the present invention, an elastically bendable stress relaxation portion is provided between the flexible connecting piece and the board connection terminal. . According to a third aspect of the present invention, in the first or second aspect of the present invention, when the board connection terminal protrudes out of the connector housing, the board connection terminal is connected to the circuit board. It has a feature in that a guide portion for guiding to the side is provided.

According to a fourth aspect of the present invention, there is provided the first to third aspects.
In any one of the inventions, the extension member can be attached to the connector housing at a temporary locking position where the flexible connecting piece is not extended and deformed, and the extension member includes
A cover portion for covering the protruding surface of the board connection terminal at the temporary locking position, and a through hole opened in the cover cover portion so as to allow the board connection terminal projecting outside the connector housing to penetrate; It has a characteristic where it is.

[0007] The invention of claim 5 is the first to third aspects of the present invention.
In any one of the inventions, the extension member can be fixed to the circuit board, and by attaching the connector housing to the circuit board to which the extension member is fixed, the flexible connection piece is It is characterized in that the substrate connection terminals are connected to the circuit board by being stretched and deformed by the stretching member. According to a sixth aspect of the present invention, there is provided a connector housing attached to a circuit board, a terminal fitting held by the connector housing and having board connection terminals protruding out of the connector housing, and a temporary locking position on the connector housing. A cover member having a through hole through which the board connection terminal can penetrate so as to be displaceable between a locking position and the board connection terminal when the cover member is in the temporary locking position. Is covered by the cover member to be in a concealed state, and when the cover member is displaced to the final locking position, the board connection terminal penetrates the through hole and can be connected to the circuit board in a protruding state. It is characterized by the fact that

[0008]

Actions and effects of the present invention

<Claim 1> Before the connector housing is mounted on the circuit board, the board connection terminals are located inside the connector housing because the flexible connecting pieces are in a non-extended state. Therefore, interference of other members with the board connection terminals during storage, transportation, and the like is prevented. When the bending portion is pressed by the extension member and the flexible connection piece is extended and deformed, the board connection terminal protrudes from the connector housing and becomes ready for connection to the circuit board.

<Claim 2> Even if a relative displacement occurs between the terminal main body and the board connection terminal due to, for example, a fitting resistance with a mating terminal fitting, the stress relieving portion elastically bends. An increase in stress at the connection with the circuit board is avoided. <Claim 3> When the board connection terminal protrudes from the connector housing, it is guided to the connection position to the circuit board by the guide portion, so that the connection operation of the board connection terminal to the circuit board is reliably performed. In addition, as a connection form of the board connection terminal to the circuit board, insertion of the board connection terminal into a through hole provided in the circuit board may be used.

<Claim 4> When the extension member is attached to the connector housing at the temporary locking position, the protruding surface of the board connection terminal is covered with the cover, so that the storage housing is transported. It is possible to prevent other members from interfering with the board connection terminal. Further, when the extension member is displaced to a position where the flexible connection piece is extended and deformed, the board connection terminal protruding from the connector housing passes through the through hole and becomes ready for connection to the circuit board.

<Claim 5> When the connector housing is attached to the circuit board to which the extension member is fixed, the flexible connection piece is extended and deformed by the extension member, and the board connection terminal is connected to the circuit board. When attaching the connector housing to the circuit board, it is not necessary to project the board connection terminals in advance, so that the working efficiency is high. <Claim 6> Before the connector housing is mounted on the circuit board, the cover member is temporarily locked to cover the board connection terminal with the cover member. This prevents interference of other members with the board connection terminals during storage, transportation, and the like. When mounting on the circuit board, displacing the cover member to the full locking position,
When the board connection terminal protrudes through the through-hole, it becomes possible to connect to the circuit board.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 Embodiment 1 of the present invention will be described below with reference to FIGS. The board connector 10 of the present embodiment includes a connector housing 11 mounted on the circuit board P, terminal fittings 20 mounted in the connector housing 11, and an extension member 30 mountable on the connector housing 11. The connector housing 11 has a plurality of cavities 12 capable of accommodating the terminal fittings 20, and the front (left side in the figure) side end of the cavity is a receiving port into which a mating terminal fitting (not shown) is inserted. A small opening 13 is provided, and a rear end (a surface corresponding to the circuit board P) is largely opened as a terminal insertion opening 14. Further, an upper surface (hereinafter referred to as a ceiling surface) 12A in FIGS.
A lance 15 for holding the terminal fitting 20 is formed at a position close to the front of the lance 15.

Similarly, a pair of guiding grooves (guiding portions, which are a constituent element of the present invention) 16 are formed on both sides of the cavity 12 so as to extend along the ceiling surface 12A from the terminal insertion opening 14 to the back side over a certain area. Have been. The stabilizer 26 of the terminal fitting 20 is movably fitted into the guide groove 16 without play. Floor 1 of cavity 12
2B, the board connection terminal 25 of the terminal fitting 20 is connected to the connector housing 11 in cooperation with an extension member 30 described later.
A flexible pressing piece 17 is formed so as to protrude therefrom. The flexible pressing piece 17 cantileverly projects from the back side to the front side,
The upper surface facing the cavity 12 is a pressing surface 17 </ b> A that contacts the terminal fitting 20. The pressing surface 17A is flush with the floor surface 12B so as not to hinder the insertion of the terminal fitting 20 into the cavity 12 at all times. The lower surface (outer surface) of the flexible pressing piece 17 is connected to the connector housing 11.
Is formed as an inclined surface 17B protruding from the outer surface of the extension member 30 to enable the extension member 30 to slide. The projecting amount of the inclined surface 17B from the outer surface of the connector housing 11 is inclined so as to increase toward the front side.

The terminal fitting 20 is formed by bending a metal plate material having a predetermined shape, and is provided so as to be a box-shaped terminal body 21 having front and rear ends opened in a rectangular shape, and to be folded back into the terminal body 21. Mating terminal fitting (not shown)
An elastic contact piece 22 capable of elastic contact with the terminal body; a flexible connecting piece 23 extending rearward from an upper edge of the rear side end of the terminal body 21 in FIGS. 1 to 4; An elastically bendable stress relaxation portion 24 extending further rearward from the flexible connection piece 23 and bent in a V-shape, and a board connection terminal 25 extending rearward from the rear end of the stress relaxation portion 24 are provided. You.

Further, a pair of stabilizers 26 protruding from both side edges of the base end of the board connection terminal 25 are formed. This stabilizer 26 does not rattle with respect to the guide groove 16 and is in the front-rear direction (left-right direction in the drawing).
It is adapted to be fitted so as to be relatively movable with respect to. Thereby, the board connection terminal 25 is connected to the connector housing 11.
When moving to the position of retracting inside and the position protruding from the connector housing 11, the state where alignment is adjusted, that is, the state where it can be reliably and smoothly inserted into the through hole H, is maintained.

The flexible connecting piece 23 provided between the terminal body 21 and the stress relieving portion 24 is formed in an elongated plate shape when viewed from the upper surface side, and is bent and formed in a V-shape when viewed from the side surface side. The flexible connecting piece 23 can be elastically expanded and deformed while expanding its bent portion 23A. When the flexible connecting piece 23 is housed in the cavity 12, the flexible connecting piece 23 is bent. The portion 23A is the pressing surface 17A of the flexible pressing piece 17.
Is in contact with The flexible connecting piece 23 and the stress relieving portion 24 are continuous in a V-shape, and the continuous portion 27 is in contact with the ceiling surface 12 </ b> A of the cavity 12.

The terminal fitting 20 is inserted into the cavity 12 from the terminal insertion port 14 on the back side of the connector housing 11, and the locking hole A of the terminal main body 21 is locked to the lance 15 at the back end. It is kept in the removal restriction state. In this state, the flexible connecting piece 23 has hardly bent, the bent portion 23A is in contact with the pressing surface 17A, and the continuous portion 27 is in contact with the ceiling surface 12A of the cavity 12. . Further, the continuous portion 27 is elastically bent in a direction to close, and the board connection terminal 25 is elastically contacted with the ceiling surface 12A by the elastic restoring force. In this state, the board connection terminal 2
5 is located inside the connector housing 11.

The extension member 30 is connected to the connector housing 11.
In the form of a box that can be fitted to the rear side of the. In the cover 31 corresponding to the terminal insertion port 14 of the extension member 30, a through-hole 32 for allowing the board connection terminal 25 to penetrate is formed. The lower surface of the extension member 30 in FIGS. 1 to 4 slides along the lower surface of the connector housing 11, and the tip of the lower surface of the extension member 30 The operating portion 33 is slidable on the surface 17B. This operating part 33 is the inclined surface 1
7B, the flexible pressing piece 17 is bent toward the inside of the cavity 12.

An inward locking projection 34 is formed on the upper surface of the extension member 30. The locking projection 34
The temporary locking portion 18 and the full locking portion 19 provided on the upper surface of the connector housing 11 are locked. When the locking projection 34 is locked to the temporary locking portion 18, the extension member 30 is held at the temporary locking position with respect to the connector housing 11 as shown in FIG. When the engagement member 19 is engaged, the extension member 30 is held at a proper assembly position with respect to the connector housing 11 as shown in FIG.

Next, the operation of the present embodiment will be described. At the time of storage or transportation before attaching the board connector 10 of the present embodiment to the circuit board P, as shown in FIG.
The terminal fitting 20 is inserted into the connector housing 11, and the extension member 30 is temporarily locked to the connector housing 11. In this state, the operating portion 33 of the extension member 30 is at a position where the flexible pressing piece 17 does not interfere with the flexible pressing piece 17, and the flexible connecting piece 23 is bent because the flexible pressing piece 17 does not press the bent portion 23A. However, the board connection terminal 25 is in a state of being located inside the connector housing 11.
Furthermore, the terminal insertion port 14 in which the board connection terminal 25 faces
Is covered by the cover 31 of the extension member 30. Therefore, even if such a board connector 10 is stored or transported in a bag or the like together with many other board connectors 10, for example, only the connector housings 11 which are relatively hard to deform need to hit each other. In addition, there is no possibility that the easily deformable board connection terminal 25 interferes with another connector housing 11 or the like.

When attaching the board connector 10 to the circuit board P, the extension member 30 at the temporarily locked position is moved to the fully locked position. Then, the operating portion 33 is moved to the inclined surface 17.
B, the flexible pressing piece 17 is pushed toward the cavity 12, and the flexible pressing piece 17 presses the bent portion 23A to deform (expand) the flexible connecting piece 23. Due to this extension deformation, the bent portion 23A becomes a pressing surface 17A.
At this time, since the flexible pressing piece 17 changes its posture, the pressing surface 17A is inclined in the direction of lowering to the rear side, so that the bending portion 23A slides. The operation, that is, the extension deformation of the flexible connecting piece 23 is performed smoothly.

As the flexible connecting piece 23 is extended and deformed as described above, the stress relieving portion 24 and the board connecting terminal 25 move to the rear side while the stabilizer 26 is fitted in the guide groove 16 and the board connecting terminal 25 is moved. Project out of the connector housing 11. Then, as shown in FIG. 2, after the tip of the board connection terminal 25 has entered the through hole 32 of the extension member 30, the board connection terminal 25 protrudes from the through hole 32 as shown in FIG. In 32, the base end of the board connection terminal 25 is positioned without large backlash. As described above, the board connection terminal 25 can be inserted into the through hole H.

In this state, the board connector 10 is mounted on the circuit board P. For mounting, the extension member 30 is positioned at a predetermined position on the circuit board P, and the board connection terminal 25 is inserted into the through hole H. Then, the extension member 30 is fixed to the circuit board P by a tapping screw (not shown), and the board connection terminals 25 are fixed by soldering S. Thus, the attachment to the circuit board P is completed. As described above, the board connector 10 of the present embodiment can hold the board connection terminal 25 at a position where the board connection terminal 25 does not protrude from the connector housing 11 unless the board connector 10 is attached to the circuit board P. In this case, it is possible to prevent other members from interfering with the board connection terminal 25.

In the present embodiment, the flexible connecting piece 23 is formed in a V-shape, and the bent portion 23A which receives the pressing force from the extension member 30 is attached to the lower surface of the connector housing 11 (the front face and the terminal where the receiving port 13 is opened). (A surface different from the rear surface where the insertion opening 14 is opened), so that when the extension member 30 presses the bent portion 23A, the fitting operation with the mating terminal metal fitting or the through hole of the board connection terminal 25 is performed. This eliminates the effect of the insertion operation.

Further, by providing the flexible pressing piece 17, the pressing direction against the bent portion 23A is directed upward in FIG. 1 through FIG. ), The flexible connecting piece 23 is compared with the case where the pressing direction against the bent portion 23A is the horizontal direction (the horizontal direction in FIGS. 1 to 4).
The stretching deformation of is stable. In addition, the flexible connecting piece 23
Since the stress relief portion 24 is provided between the terminal body 21 and the board connection terminal 25, the terminal body 21 and the flexible connection piece 23 are connected to each other, for example, after being attached to the circuit board P, because of the mating resistance with the mating male terminal fitting. If it is shifted to the substrate P side, the stress relaxation portion 24
Are elastically bent to absorb the deviation. As a result, an increase in stress in the soldering S portion between the board connection terminal 25 and the circuit board P is avoided.

Further, when the board connecting terminals 25 are projected from the connector housing 11, the board connecting terminals 25 are always aligned and adjusted by fitting the guide grooves 16 and the stabilizers 26, that is, surely with respect to the through holes H. Since it is maintained in a state where it is positioned so as to be inserted, it is excellent in workability of mounting on the circuit board P.
In addition, since the extension member 30 is temporarily locked to the connector housing 11, at the site of attachment to the circuit board P,
It is only necessary to displace the extension member 30 from the temporary locking position to the regular assembling position while keeping the extension member 30 attached to the connector housing 11.
Is unnecessary. Therefore, workability at the site of attachment to the circuit board P is good.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. Embodiment 1
In the second embodiment, the extension member 30 is temporarily locked to the connector housing 11, whereas in the second embodiment, the extension member 30 is fixed to the circuit board P in advance. Extension member 3
Numeral 0 is positioned and fixed so that the through hole 32 is aligned with the through hole H. The extension member 30
It is not necessary to temporarily lock the connector housing 11 with the connector housing 11. Therefore, the connector housing 11 of the second embodiment is not provided with a component corresponding to the temporary locking portion 18 of the first embodiment. In a state where the flexible pressing piece 17 is not attached to the circuit board P, the flexible pressing piece 17 is not bent toward the cavity 12 by the extension member 30, so that the flexible connecting piece 23 also remains in the non-extended state. The connection terminal 25 is located inside the connector housing 11. Circuit board P
When assembling the connector housing 1
1 may be fitted into the extension member 30. Then, as in the first embodiment, the operating portion 3 of the extension member 30 is
B, and slides the flexible pressing piece 17 toward the cavity 12, whereby the bent portion 23A is pressed to expand and deform the flexible connecting piece 23, and the board connection terminal 25 projects from the connector housing 11 at the same time. It penetrates through hole 32 and is inserted into through hole H. As described above, in the second embodiment, at the site of attachment to the circuit board P, the extension member 30
The mounting of the connector housing 11 to the circuit board P and the mounting of the connector housing 11 to the circuit board P are performed at the same time, so that the working efficiency is high. Since other configurations, operations, and effects are the same as those in the first embodiment, the same components are denoted by the same reference numerals, and description of the structure, operation, and effects is omitted.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the pressing force from the extension member 30 is applied to the flexible pressing piece 1.
7, the extension member 30 is directly in contact with the bending portion 41A of the flexible connecting piece 41 and is pushed. It has a configuration. That is, the lower surface of the connector housing 11 is not provided with a component corresponding to the flexible pressing piece 17 of the first embodiment, and that portion is provided with the terminal insertion port 14.
Is formed as an operation opening 42 that communicates between the inside and outside of the cavity 12 over a region reaching. The bent portion 41A is in a state of protruding from the operating opening 42 to the outside of the connector housing 11. Note that the projecting position is set to be inside the lower surface of the extension member 30 in FIG. When the extension member is moved from the temporary locking position shown in FIG. 7 to the regular assembling position shown in FIG. 8, the inclined pressing surface 33A of the operating portion 33 of the extension member 30 is moved laterally with respect to the bending portion 41A (see FIG. (Left and right directions in FIG. 3), and the bent portion 41A is pushed toward the cavity 12 by the inclination of the inclined pushing surface 33A. Then, the flexible connecting piece 41 expands and deforms, so that the board connection terminal 25 projects from the connector housing 11. Configurations other than the above,
Since the operation and effect are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and the description of the structure, operation and effect is omitted. The illustration of the temporary locking portion 18, the full locking portion 19 and the locking projection 34 is omitted.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the third embodiment, the extension member 30 is connected to the connector housing 11.
Of the fourth embodiment,
Then, the lower surface of the extension member 43 is connected to the connector housing 4.
4 is fitted in a state of being flush with the lower surface of the lower surface 4. Therefore, the lower surface portion 43A of the extension member 43 enters the inside of the operation opening 42 and faces the inside of the cavity 12. The bent portion 45 </ b> A of the flexible connection piece 45 is set to be located inside the lower surface of the connector housing 44. Other configurations, operations, and effects are the same as those in the third embodiment, and thus the same configurations are denoted by the same reference numerals, and description of the structure, operation, and effects is omitted. In addition, the temporary locking part 18, the full locking part 19, and the locking projection 3
4 is not shown.

<Embodiment 5> Next, an embodiment of the present invention will be described with reference to FIGS. The board connector 50 according to the fifth embodiment includes a connector housing 51 attached to the circuit board P, terminal fittings 60 attached inside the connector housing 51, and a cover member 70 attachable to the connector housing 51. . The connector housing 51 has a cavity 52 capable of accommodating the terminal fitting 60.
Is open as a receiving port 53 into which a mating terminal fitting (not shown) is fitted, and the rear side is opened as a terminal insertion port 54. A lance 55 for holding the terminal fitting 60 is formed at a position near the front of the ceiling surface in the cavity 52.

On the outer upper surface of the connector housing 51, there are formed a hole-shaped temporary locking portion 56 with which a locking projection 73 of a cover member 70 to be described later is engaged, and a full locking portion 57. The temporary locking portion 56 is formed with an inclined surface 56A for allowing the locking projection 73 to be displaced toward the main locking portion 57. The locking portion 57 is formed with a locking surface 57 </ b> A that regulates the displacement of the locking protrusion 73 toward the temporary locking portion 56. The terminal fitting 60 is formed by bending a metal plate material of a predetermined shape, and is provided so as to be folded back in the box-shaped terminal main body 61 and the terminal main body 61 and is provided with a mating terminal fitting (not shown).
An elastic contact piece 62 capable of elastic contact with the terminal body; an elastically deflectable stress relief portion 63 bent and extended in a V-shape from the rear end of the terminal main body 61;
3 and a board connection terminal 64 extending rearward from the rear end.

The terminal fitting 60 is inserted into the cavity 52 through the terminal insertion opening 54 on the rear side, and the locking hole 61A of the terminal main body 61 is locked to the lance 55 at the inner end thereof, so that the terminal fitting 60 is in a detachment-restricted state. Will be retained. In this state, the board connection terminal 64 protrudes from the terminal insertion opening 54 to the outside of the connector housing 51. Cover member 7
Reference numeral 0 denotes a box shape that can be fitted to the rear side portion of the connector housing 51. Terminal insertion port 54 of cover member 70
A through-hole 72 for penetrating the board connection terminal 64 is formed in the cover 71 corresponding to the above.

On the upper surface of the cover member 70, a locking projection 73 that can be locked to the temporary locking portion 56 and the full locking portion 57 of the connector housing 51 is formed so as to protrude inward.
The locking projection 73 has an inclined surface 56A that contacts the inclined surface 56A of the temporary locking portion 56, and a locking surface 73B that contacts the locking surface 57A of the full locking portion 57. When the locking projection 73 is locked by the temporary locking portion 56, as shown in FIG.
0 is held in the temporary locking position with respect to the connector housing 51 and the locking projection 73 is engaged with the full locking portion 57, and the cover member 70 is locked with respect to the connector housing 51 as shown in FIG. It is designed to be held in a locking position. In the state where the cover member 70 is temporarily locked, the cover lid portion 71 is located before the tip of the board connection terminal 64, and the board connection terminal 64 is accommodated inside the cover member 70.
In a state where the cover member 70 is fully locked, the cover 71 is in close contact with the back surface of the connector housing 51, and the board connection terminals 64 pass through the through holes 72 and protrude to the outside of the cover member 70. .

Next, the operation of the present embodiment will be described. At the time of storage or transportation before attaching the board connector 50 of the present embodiment to the circuit board P, as shown in FIG. 11, the cover member 70 is temporarily locked to the connector housing 51 and the board connection terminals 64 are It is concealed inside the cover member 70. Such a board connector 50 is
For example, even when stored or transported in a bag or the like together with many other board connectors 50, only the connector housing 51 and the cover member 70, which are relatively difficult to deform, need only hit, and the board connection that is easily deformed. There is no possibility that the terminal 64 interferes with another connector housing 51 or the like.

When attaching the board connector 50 to the circuit board P, the cover member 70 at the temporarily locked position is moved to the fully locked position. Then, the board connection terminal 64 relatively penetrates through the through hole 72 and protrudes to the outside of the cover member 70, whereby the board connection terminal 64 can be inserted into the through hole H. In this state, the board connector 50 is attached to the circuit board P. For mounting, the cover member 70 is positioned at a predetermined position on the circuit board P, and the board connection terminals 64 are inserted into the through holes H. Then, the cover member 70 is fixed to the circuit board P by tapping screws (not shown), and the board connection terminals 64 are fixed by soldering S.
Thus, the attachment to the circuit board P is completed.

As described above, the board connector 50 of the present embodiment can keep the board connection terminals 64 concealed in the cover member 70 before being attached to the circuit board P. It is possible to prevent other members from interfering with the board connection terminal 64 during transportation or transportation. Also,
Stress relaxation portion 6 between terminal body 61 and substrate connection terminal 64
For example, when the terminal main body 61 is displaced toward the circuit board P due to a resistance to fitting with the mating male terminal fitting 60 after being attached to the circuit board P, the stress relaxation portion 63 is provided.
Are elastically bent to absorb the deviation. As a result, an increase in stress at a soldered portion (not shown) between the board connection terminal 64 and the circuit board P is avoided.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the first to fourth embodiments, the extension member is extended and deformed while moving the extension member in the same direction as the terminal fitting insertion direction. However, according to the present invention, the extension member is implemented. The flexible connecting piece may be expanded and deformed while being moved in a direction opposite to the form or in a direction transverse to the direction of inserting and removing the terminal fitting. Further, in the case of such a moving direction, the extension member may directly press the bent portion as in the third and fourth embodiments, and the extension member may be pressed as in the first and second embodiments. You may make it press a bending part indirectly.

(2) In the first to fourth embodiments, the flexible connecting piece is bent into a V-shape. However, according to the present invention, the flexible connecting piece is not limited to the V-shape, and may have another shape such as a waveform. Good. (3) In the first to fourth embodiments, the guide portion is provided in the connector housing to guide the board connection terminal to a position where the board connection terminal can be inserted into the through-hole. It is good also as composition which does not provide a part. In this case, only the through hole of the extension member may have a guiding function.

(4) In the first to fourth embodiments, the extension member is temporarily locked so as to cover the projecting surface of the board connection terminal with respect to the connector housing. The member may be temporarily locked so as not to cover the protruding surface of the board connection terminal. (5) In the first to fourth embodiments, the case where the extension member is temporarily locked to the connector housing when the connector housing is not attached to the circuit board and the case where the extension member is fixed to the circuit board in advance have been described. According to the invention, the extension member is prepared separately from the connector housing and the circuit board, and when the connector member is not attached to the circuit board, the connector housing is handled alone, and the extension member is assembled to the connector housing immediately before being attached to the circuit board. The board connection terminals may be protruded.

(6) In the first to fifth embodiments, the case where the extension member has a box shape has been described. However, according to the present invention, the shape of the extension member is not limited to the box shape, but may be a wall shape or a plate shape. , Other shapes such as a portal shape. (7) In the third and fourth embodiments, the extension member may be integrally provided with a cover for covering the operation opening. (8) In the first, third, and fourth embodiments, the board connection terminal is located inside the connector housing in a state where the extension member is temporarily locked.
According to the present invention, the board connection terminal may be projected outside the connector housing while the extension member is temporarily locked. With this configuration, the stroke when the board connection terminal protrudes, that is, the amount of bending of the flexible connection piece in the expansion deformation is reduced, so that the stress of the flexible connection piece can be reduced.

(9) In the above embodiment, the stress relief portion is provided in the terminal fitting to reduce the stress at the portion where the board connection terminal is soldered to the circuit board. However, according to the present invention, the stress relief portion is provided. If it is not necessary, a configuration in which the stress relaxation portion is not provided may be adopted.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which an extension member is temporarily locked to a connector housing in a first embodiment.

FIG. 2 is a sectional view showing a process of properly attaching an extension member to the connector housing in the first embodiment.

FIG. 3 is a cross-sectional view illustrating a state in which the extension member is properly attached to the connector housing in the first embodiment.

FIG. 4 is a cross-sectional view illustrating a state in which the semiconductor device is mounted on a circuit board in the first embodiment.

FIG. 5 is a sectional view taken along line AA of FIG. 1;

FIG. 6 is a sectional view showing a state before a connector housing is mounted on a circuit board in the second embodiment.

FIG. 7 is a sectional view showing a state in which an extension member is temporarily locked to a connector housing in a third embodiment.

FIG. 8 is a cross-sectional view illustrating a state in which the extension member is properly attached to the connector housing in the third embodiment.

FIG. 9 is a sectional view showing a state in which an extension member is temporarily locked to a connector housing in a fourth embodiment.

FIG. 10 is a cross-sectional view showing a state where an extension member is properly attached to a connector housing in a fourth embodiment.

FIG. 11 is a sectional view showing a state in which a cover member is temporarily locked in a fifth embodiment.

FIG. 12 is a sectional view showing a state where a cover member is fully locked in a fifth embodiment.

FIG. 13 is a partially enlarged cross-sectional view showing a state where the cover member according to the fifth embodiment is temporarily locked to the connector housing.

FIG. 14 is a sectional view of a conventional example.

[Explanation of symbols]

 P ... Circuit board H ... Through hole 10 ... Connector for board 11 ... Connector housing 16 ... Induction groove (induction section) 21 ... Terminal body 23 ... Flexible connection piece 23A ... Bend section 24 ... Stress relaxation section 25 ... Board connection terminal 30 ... Extension member 31 ... Cover part 32 ... Through hole 41, 45 ... Flexible connecting piece 41A, 45A ... Bending part 43 ... Extension member 44 ... Connector housing 50 ... Board connector 51 ... Connector housing 60 ... Terminal fitting 64 ... Board connection Terminal 70: Cover member 72: Through hole

Claims (6)

[Claims] 1. A connector housing attached to a circuit board, a terminal body held by the connector housing, a flexible connecting piece connected to the terminal body and having a bendable portion that can be extended and deformed; A substrate connecting terminal formed at the tip and located inside the connector housing when the flexible connection piece is in a non-extended state; and an extension member that presses the bent portion to expand and deform the flexible connection piece. The flexible connection piece is extended and deformed by the extension member so that the board connection terminal is protruded to the outside of the connector housing so that the board connection terminal can be connected to the circuit board. Board connector. 2. The board connector according to claim 1, further comprising an elastically bendable stress relief portion provided between said flexible connection piece and said board connection terminal. 3. The connector housing is provided with a guide portion for guiding the board connection terminal to a connection position to the circuit board when the board connection terminal protrudes out of the connector housing. The board connector according to claim 1 or 2, wherein 4. The extension member can be attached to the connector housing at a temporary locking position where the flexible connecting piece is not extended and deformed, and the extension member has the board connection terminal in the temporary locking position. A cover cover for covering a surface of the connector housing, and a through-hole opened in the cover cover so as to allow the board connection terminal projecting out of the connector housing to penetrate therethrough. Claim 3
The board connector according to any one of the above. 5. The extension member is fixable to the circuit board, and the connector member housing is attached to the circuit board to which the extension member is fixed, so that the flexible connection piece extends the extension member. The board connector according to any one of claims 1 to 3, wherein the board connection terminal is connected to the circuit board by being extended and deformed by a member. 6. A connector housing attached to a circuit board, a terminal fitting held by the connector housing and having board connection terminals protruding out of the connector housing, a temporary locking position and a final locking to the connector housing. And a cover member having a through-hole through which the board connection terminal can penetrate, wherein the board connection terminal is provided when the cover member is in the temporary locking position. When the cover member is displaced to the final locking position by being covered with the cover member, the cover connection member is displaced to the full locking position, so that the board connection terminal passes through the through hole and is brought into a protruding state capable of being connected to the circuit board. A connector for a board, characterized in that: