JP2018200859A - Contact terminal and card edge connector - Google Patents

Abstract

To provide a connection terminal which can obtain desired contact force and be used for a connector having a narrow pitch interval.SOLUTION: A connection terminal T used for a card edge connector W connected to a substrate terminal provided on an end of a substrate 160 includes: a base contact 1 which is formed with a box part 10 at one end side, formed with a wire connection part 30 holding and connecting the end of a wire 40 on the other end, and stores an elastic contact piece 15 formed with a contact part for being brought into contact with the substrate terminal in the box part 10; and an outer contact 2 which is formed of a separate body from the base contact 1 and has an outer contact piece 25 arranged so as to relatively face the elastic contact piece 15 when being externally fitted into the box part 10. The elastic contact piece 15 has a base end part supported by a bottom wall 11 of the box part 10 and the contact part protruding from a hole part 13a of an upper wall 13 when being pushed upward.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a contact terminal and a card edge connector. For example, a card edge connector including a contact terminal used for a card edge connector, a harness-side connector including the contact terminal, and a substrate-side connector for holding a substrate. About.

  2. Description of the Related Art Conventionally, a card edge connector for electrically connecting to a board terminal provided at an end of a board on which an electronic circuit or the like is printed is known. Here, a conventional card edge connector will be described with reference to FIGS.

  As shown in FIG. 12, the card edge connector according to the prior art accommodates the board-side connector 400 holding the board 420 and the contact terminals 200 (see FIG. 12B) that are electrically connected to the board 420. The harness side connector 300 is provided. The board side connector 400 is detachably fitted to one end side (front end side) of the harness side connector 300. FIG. 12 shows a state where the board-side connector 400 is fitted to the harness-side connector 300.

  As shown in FIG. 13, the harness-side connector 300 includes a connector housing 310 and has a structure in which a plurality of contact terminals 200 are mounted inside the connector housing 310. In addition, the connector housing 300 has a slit portion 310a into which an end portion of the board is inserted on one surface thereof. When the end of the substrate 420 (see FIG. 12) is inserted into the slit portion 310a, each substrate terminal provided on the substrate 420 and the contact portion of the contact terminal 200 corresponding to each substrate terminal come into contact. Electrical connection is made.

  The board-side connector 400 has a structure in which the board 420 is supported by the cap housing 410. Then, when the cap housing 410 is fitted into the connector housing 310, the end of the substrate 420 is inserted into the slit portion 310a of the connector housing 310, and each substrate terminal provided at the end of the substrate 420, and each substrate terminal The contact part of the contact terminal 200 corresponding to is in contact.

  As shown in FIGS. 14 and 15, the contact terminal 200 has a rectangular tube-shaped box portion 210 formed on the front end side, and a wire connecting portion 230 that holds and connects the end portion of the electric wire 240 on the rear end side. Is formed. Further, the electric wire 240 is fitted with a sealing material 260 formed of rubber or the like in the vicinity of the electric wire connecting portion 230. The sealing material 260 suppresses intrusion of liquid or the like from the side where the electric wire 240 is disposed.

  As shown in FIGS. 14 and 15, the box portion 210 includes a bottom wall 211, an upper wall 213, and left and right side walls 212, and an opening 210 a into which an end portion of the substrate 420 is inserted at a front end portion thereof. Is formed. Further, the bottom wall 211 (and the upper wall 213) has a substrate support portion 211a (213a) formed by bending the front end thereof into an arc shape. The substrate support portion 211a and the substrate support portion 213a sandwich the end portion of the inserted substrate 420.

  Further, on the lower surface side of the upper wall 213 of the box portion 210, when the substrate 420 is inserted into the opening 210a, a substrate terminal provided on the substrate 420 sandwiched between the substrate support portion 211a and the substrate support portion 213a. An elastic contact piece (elastic contact spring) 215 that comes into contact with is formed.

  In addition, in the connector as described above (connector for electrically connecting to the substrate terminal provided at the end of the substrate), the inserted substrate is supported by the connector housing, and the substrate There is a structure in which a contact terminal mounted inside a housing is urged from one side and comes into contact with a substrate terminal provided on the front surface (or back surface) of the end, for example, Patent Document 1 2.

  The connector described in Patent Document 1 has a connector housing that has a board insertion space into which an end of the board is inserted and is mounted so as to sandwich the end of the board from both sides of the board, and is opposed to both sides of the board. A plurality of contact terminals, which are disposed in the connector housing so as to be positioned and have contact portions that elastically contact the conductive paths (board terminals) of the board, and mounted at positions corresponding to the contact terminals on the outer periphery of the connector housing And an opening prevention member.

  Further, the connector described in Patent Document 2 includes a board terminal connection portion that contacts and electrically connects to a board terminal provided at an end of the board. In addition, the board terminal connecting portion (contact terminal) is in contact with the elastic contact piece that comes into contact with the end of the board at an initial stage of the relative sliding operation in the connection direction between the board and the connector and tilts with the sliding action. As the piece tilts, it has a oscillating contact portion that oscillates toward the connector side and includes an external contact piece that comes into contact with the substrate terminal with a delay from the contact of the elastic contact piece with the end of the substrate.

Japanese Patent No. 4776492 Japanese Patent No. 5922295

The contact terminal 200 of the prior art shown in FIG. 14 has a structure in which a sealing material 260 covering the outer periphery of each electric wire 240 connected to the electric wire connecting portion 230 is fitted. Therefore, when the contact terminal 200 is mounted on the connector housing 300, the installation interval (pitch) between the contact terminals 200 installed adjacent to each other cannot be reduced. As a result, the conventional contact terminal 200 has a problem that it cannot be used as a connector for connecting to a board having board terminals with a narrow pitch interval.
In addition, when the contact terminal 200 is used for the connector, not the configuration in which the sealing material 260 is provided for each cable 240, but “block-shaped sealing material (a sealing material such as a batch rubber plug) in which a plurality of through holes are formed” It is also conceivable that the contact terminal 200 is inserted. However, the box portion 210 of the contact terminal 200 has a structure that covers the front and back surfaces of the substrate 420, and the dimensions thereof are increased. Therefore, even if the configuration in which the contact terminal 200 is inserted into the sealing material in which a plurality of through holes is formed, the cross section passing through the through hole of the contact terminal tends to be long in the vertical direction. When penetrating through the sealing material hole, the hole (circular shape) is damaged, and there is a possibility that the waterproof property is hindered.

On the other hand, the contact terminals of the connectors described in Patent Documents 1 and 2 are not configured to cover the substrate from the front and back surfaces, and there is no need to provide a box portion 210 having a large size unlike the contact terminals 200 shown in FIG. . Therefore, the connectors described in Patent Documents 1 and 2 have an advantage that the pitch between the contact terminals can be narrower than when the contact terminals 200 are used.
However, although the connectors described in Patent Documents 1 and 2 can narrow the pitch between the contact terminals, the contact terminals themselves do not adopt a configuration in which the substrate is sandwiched, and the connector housing is a connector housing formed of plastic. Due to the receiving structure, there is a problem that the contact force of each contact terminal may vary or the desired contact force may not be obtained. For example, when the connectors described in Patent Documents 1 and 2 are used in a usage environment or the like where a lot of vibrations occur (when used in automobile parts or the like), there is a risk that the proposed electrical connection cannot be obtained. was there.

  The present invention has been made in view of the above technical problems, and an object thereof is a contact terminal used for a connector, which can obtain a desired contact force and is used for a connector having a narrow pitch interval. It is in providing the contact terminal which can do. Another object of the present invention is to provide a card edge connector in which a desired contact force can be obtained and contact terminals are mounted at a narrow pitch interval.

  The present invention made to solve the above technical problem is a contact terminal used in a connector for electrically connecting to a substrate terminal provided at an end portion of a substrate, and has a cylindrical shape on one end side. A box part is formed, an electric wire connection part for holding and connecting the end of the electric wire is formed on the other end side, and a contact part for contacting the substrate terminal is formed inside the box part. A base contact in which an elastic contact piece is housed, and an external contact piece that is formed separately from the base contact and is arranged opposite to the elastic contact piece when fitted into a box portion of the base contact The box portion has a bottom wall, an upper wall, and both side walls, and a hole having a size capable of projecting the contact portion of the elastic contact piece is formed on the upper wall. At the front end When the mouth portion is formed and connected to the substrate terminal, the end portion side of the substrate is inserted into a region between the upper wall of the box portion and the external contact piece, and the opening portion at the front end of the box portion A push-up pin is inserted together with the substrate, and the inserted push-up pin abuts on the elastic contact piece and pushes it upward, so that the contact portion of the elastic contact piece is removed from the hole in the upper wall. The contact portion is urged and brought into contact with the board terminal of the inserted board so that the external contact piece comes into contact with the back surface of the part where the board terminal of the board is located. Features.

  As described above, according to the contact terminal of the present invention, the portion where the board terminal provided on the inserted board is provided by the contact portion of the elastic contact piece of the base contact and the external contact piece of the outer contact. While being sandwiched from the front and back surfaces, the contact portion of the elastic contact piece is urged to contact the substrate terminal. That is, the present invention has a configuration in which the contact terminals are directly sandwiched from the front and back surfaces of the substrate terminals provided on the substrate from the front and back surfaces, so that the contact terminals do not sandwich the substrate (Patent Document 1, 2 and the contact terminal 200 of the prior art not configured to sandwich the contact portion with the substrate terminal (see FIG. 12B) (large contact force (desired contact force)). Can contact the substrate terminal and a stable electrical connection can be obtained. Further, since the contact terminal of the present invention directly sandwiches the substrate, the contact force of each contact terminal is higher than that of the prior art when used in a connector (card edge connector) to which a plurality of contact terminals are mounted. This reduces the possibility of variations.

In the contact terminal of the present invention, the base contact and the outer contact are separate. Therefore, for example, by adopting a process as shown below, it is possible to narrow the installation interval (pitch) between the contact terminals attached to the connector.
Specifically, first, an outer contact is attached to the front side of the connector housing, and a “seal material having a plurality of through holes (block-shaped collective seal material)” is attached to the rear side of the connector housing. deep. Then, from the rear side of the connector housing, the base contact to which the electric wire is attached is inserted, and the base contact is attached to the outer contact attached to the front side of the connector housing to complete the contact terminal. If comprised in this way, since the dimension of the base contact which penetrates a sealing material can be made smaller than the contact terminal 200 of the prior art shown in FIG. 14, the installation space | interval (pitch) of contact terminals can be narrowed.

Further, in the contact terminal of the present invention, the elastic contact piece is accommodated in the box portion, and when the substrate to be connected is inserted into the region between the upper wall of the box portion and the external contact piece, A push-up pin is inserted into the opening at the front end together with the substrate. Then, the push-up pin inserted together with the substrate abuts on the elastic contact piece and pushes it upward to project the contact portion of the elastic contact piece from the hole in the upper wall of the box portion. The contact portion is urged toward and comes into contact.
Thus, the contact terminal of the present invention is designed so that the “elastic contact piece” connected to the board terminal does not contact other components as much as possible until it is connected to the board terminal. . That is, according to the present invention, at the timing when the board terminal to be connected is inserted into a predetermined position, the contact part of the elastic contact piece protrudes from the hole of the upper wall of the box part so as to contact the board terminal. It has become.
Therefore, when the contact terminal of the present invention is connected to the substrate, the elastic contact piece is prevented from being deformed or the contact component of the elastic contact piece is prevented from adhering to the substrate component or dust. The possibility of contact failure due to deformation or contamination of the elastic contact piece is reduced.

  Further, the outer contact has an outer cylinder part into which the box part of the base contact is inserted and fitted, and an upper surface part of the outer cylinder part has an opening from the front end part to the rear end part and the vicinity side. An outer upper wall is formed, and the outer contact piece is erected on the outer upper wall, and the outer contact piece extends vertically from the outer upper wall, and It is desirable that the vertical piece is formed in a substantially L shape having a parallel piece extending at a right angle from the upper end portion of the vertical piece toward the front end portion of the outer cylinder portion.

  In the contact terminal of the present invention, since the base contact and the outer contact are separated, the outer contact is inserted into the through hole of the sealing material (block-shaped collective sealing material) by adopting the process as described above. You don't have to. Therefore, the shape of the outer contact can be designed without being limited by the interval between the through holes of the sealing material, and the outer contact having a shape (for example, an L shape) that can obtain a desired contact force can be configured.

  The elastic contact piece includes a base attached to a rear end side / upper surface of the bottom wall, an upright standing upward from a front end of the base, and a bottom from the upper end of the upright. A lower elastic portion extending toward the front end of the wall, and a rear end of the lower elastic portion bent in a U-shape from the front end of the lower elastic portion toward the rear end of the bottom wall An upper elastic portion extending to the vicinity of the portion, and the upper elastic portion is formed in a shape in which a middle portion in the length direction is bent in a convex shape, and the top portion and the top portion Further, it is desirable that the elastic contact piece is accommodated inside the box portion when receiving no external load.

  As described above, the elastic contact piece of the base contact, which is a component of the contact terminal according to the present invention, is accommodated inside the box portion when receiving no external load. That is, even when the base contact is not attached to the outer contact, the elastic contact piece is naturally accommodated inside the box portion. Therefore, the elastic contact piece is inside the box portion and the elastic contact piece does not contact the sealing material while the base contact is inserted through the sealing material as in the process exemplified above. Therefore, the operation of inserting the base contact into the sealing material does not cause the elastic contact piece to be deformed, and the component of the sealing material, dust or the like does not adhere to the contact portion of the elastic contact piece.

  The present invention also provides a card edge comprising: a board-side connector holding a board; and a harness-side connector containing contact terminals that are electrically connected to board terminals provided on the end side of the board. The contact terminal has a cylindrical box portion formed on one end side and a wire connecting portion formed on the other end side for gripping and connecting the end of the electric wire. A base contact in which a contact portion for contacting the substrate terminal is formed, and a base contact that is formed separately from the base contact and fitted into a box portion of the base contact. An outer contact having an outer contact piece disposed opposite to the elastic contact piece, and the box portion has a bottom wall, an upper wall, and both side walls, Elastic contact piece contact A hole having a size that can be projected is formed, and an opening is formed at the front end. The board-side connector has a substantially rod-like shape that can be inserted into the opening at the front end of the box portion of the contact terminal. Push-up pins are provided, and when the board-side connector is inserted into and fitted to the harness-side connector, the end side of the board is inserted into a region between the upper wall of the box part and the external contact piece The push-up pin is inserted into the opening on the front end side of the box portion and abuts against the elastic contact piece to push it upward, and the contact portion of the elastic contact piece is formed into a hole in the upper wall. The contact portion is biased toward and abutted toward the substrate terminal of the substrate, and the external contact piece abuts on the back surface of the portion where the substrate terminal of the substrate is located. To do.

  In the card edge connector of the present invention, since the contact terminal is configured to sandwich the portion with the board terminal directly provided on the board from the front and back surfaces, the contact terminal does not hold the board (patent document) 1 and 2 and a contact terminal 200 (see FIG. 14) of the prior art that is not configured to sandwich the contact portion with the substrate terminal, with a larger contact force (desired contact force). A stable electrical connection can be obtained by making contact with the substrate terminal. In addition, since the card edge connector of the present invention directly holds the board, the possibility of variation in the contact force of each contact terminal is reduced as compared with the conventional one.

In the card edge connector of the present invention, the board-side connector is provided with a substantially rod-shaped push-up pin that can be inserted into the opening at the front end of the box portion of the contact terminal. Then, when the board-side connector is inserted and fitted into the harness-side connector, the end part side of the board is inserted into the region between the upper wall of the box part and the external contact piece, and the front end side of the box part A push-up pin is inserted through the opening, and is brought into contact with the elastic contact piece and pushed upward to project the contact portion of the elastic contact piece from the hole of the upper wall. That is, in the card edge connector of the present invention, the contact portion of the elastic contact piece protrudes from the hole in the upper wall of the box portion at the timing when the board terminal to be connected is inserted into a predetermined position, and comes into contact with the board terminal. It is like that.
Therefore, the card edge connector of the present invention prevents the elastic contact piece from being deformed or the substrate component or dust from adhering to the contact portion of the elastic contact piece when the contact terminal and the substrate are connected. The possibility of contact failure due to deformation or contamination of the elastic contact piece is reduced.

  According to the present invention, a contact terminal used in a connector for electrically connecting to a substrate terminal, which can obtain a desired contact force and can be used in a connector having a narrow pitch interval. Can be provided. In addition, according to the present invention, it is possible to provide a card edge connector in which a desired contact force can be obtained and contact terminals are mounted at a narrow pitch interval.

It is the schematic diagram which showed the card edge connector of embodiment of this invention. It is the schematic diagram which looked at the harness side connector which comprises the card edge connector of embodiment of this invention from the back upper side. It is the schematic diagram which showed the cross section of the card edge connector of embodiment of this invention. It is a schematic diagram for demonstrating the structure of the board | substrate side connector which comprises the card edge connector of embodiment of this invention, (a) is the schematic diagram which showed the cross section of the board | substrate side connector, (b) is a board | substrate side. It is the schematic diagram which looked at the connector from the front. It is the perspective view which showed the state which isolate | separated the contact terminal used for the card edge connector of embodiment of this invention into the base contact and the outer contact. It is the schematic diagram which showed the contact terminal used for the card edge connector of embodiment of this invention, (a) is the schematic diagram which showed the structure inside the contact terminal, (b) showed the external appearance of the contact terminal. It is a schematic diagram. It is a schematic diagram for demonstrating the structure inside the box part which comprises the base contact of the contact terminal of embodiment of this invention. It is a schematic diagram for demonstrating the structure inside the outer contact of the contact terminal of embodiment of this invention. It is the schematic diagram which showed the assembly process of the harness side connector which comprises the card edge connector of embodiment of this invention. It is a schematic diagram for demonstrating operation | movement of the contact terminal at the time of making a board | substrate side connector fit to the harness side connector of embodiment of this invention, and is in the middle of inserting the board | substrate side connector in the harness side connector. Show. It is a schematic diagram for demonstrating operation | movement of the contact terminal at the time of making a board | substrate side connector fit to the harness side connector of embodiment of this invention, and has shown the state by which the board | substrate side connector was fitted by the harness side connector . It is the schematic diagram for demonstrating the structure of the card edge connector of a prior art, (a) is the schematic diagram which looked at the card edge connector from diagonally upward, (b) The schematic diagram which showed the cross section of the card edge connector It is. It is a schematic diagram for demonstrating the harness side connector which comprises the card edge connector of a prior art, (a) is the schematic diagram which looked at the harness side connector from diagonally upward, (b) is the cross section of a harness side connector. It is the shown schematic diagram. It is a perspective view of the contact terminal used for the card edge connector of a prior art. It is the schematic diagram for demonstrating the structure of the contact terminal used for the card edge connector of a prior art, (a) is the schematic diagram which showed the plane of the contact terminal, (b) showed the side surface of the contact terminal. It is a schematic diagram, (c) is the schematic diagram which showed the internal structure of the contact terminal by the side surface.

Hereinafter, a card edge connector according to an embodiment of the present invention will be described with reference to the drawings.
First, a schematic configuration of the card edge connector of the present embodiment will be described with reference to FIGS. FIG. 1 is a schematic view showing the card edge connector of the present embodiment. FIG. 2 is a schematic view of the harness side connector constituting the card edge connector of the present embodiment as viewed from the rear upper side. FIG. 3 is a schematic view showing a cross section of the card edge connector of the present embodiment. 4A and 4B are schematic views for explaining the configuration of the board-side connector constituting the card edge connector of the present embodiment. FIG. 4A is a schematic view showing a cross section of the board-side connector, and FIG. It is the schematic diagram which looked at the board | substrate side connector from the front.

  As shown in FIG. 1, the card edge connector W of the present embodiment includes a board-side connector P that holds the board 160, and a harness-side connector H that accommodates contact terminals T that are electrically connected to the board 160. It has. The board-side connector P is detachably fitted to one end side (front end side) of the harness-side connector H.

  The harness-side connector H includes a connector housing 100 formed of synthetic resin or the like, and “a plurality of contact terminals T” housed and installed in the connector housing 100. An electric wire 40 is connected to the rear end.

  The connector housing 100 is formed in a horizontally long block shape. Further, in the connector housing 100, a plurality of terminal accommodating portions (an upper terminal accommodating portion, a lower terminal accommodating portion) for mounting a plurality of contact terminals T in parallel in the horizontally long direction (X direction shown in FIG. 1). ) Is formed. In addition, the upper side terminal accommodating part and the lower side terminal accommodating part are formed so that it may become alternate. The contact terminals T are accommodated in the terminal accommodating portions (the upper terminal accommodating portion and the lower terminal accommodating portion), respectively.

  Further, the connector housing 100 is formed in a shape that is detachably fitted to the cap housing 150 constituting the board-side connector P, and a slit portion 120a into which the board 160 is inserted is provided on the front end side thereof. In addition, a gap portion 120b (see FIG. 3) into which the cylindrical portion 151 of the cap housing 150 is inserted is formed.

  As shown in FIG. 3, the contact terminal T includes an elastic contact piece 15 that contacts a substrate terminal (not shown) provided on the substrate 160, and an external contact piece 25 that sandwiches the substrate 160 together with the elastic contact piece 15. It has. Further, the contact terminal T has a hollow rectangular tube-shaped box portion 10 formed on the front end side (one end portion side), and holds and connects the end of the electric wire 40 on the rear end side (the other end portion side). 30 is formed. The elastic contact piece 15 is accommodated in the cylinder of the box portion 10, and when pushed upward, the top portion and the vicinity of the top portion are the hole portion 13 a of the upper wall 13 of the box portion 10 (FIG. 5B). It can be projected from (see). A specific configuration of the contact terminal T will be described later.

  Further, a block-like sealing material (collective sealing material) 130 (see FIG. 3) formed of rubber or the like is mounted on the rear end side (other end side) of the connector housing 100, and this sealing material. By 130, the penetration | invasion of the liquid etc. from the side by which the electric wire 40 is arrange | positioned is suppressed. Further, the sealing material 130 is provided with through holes 130a corresponding to the contact terminals T accommodated in the connector housing 100, and the electric wires 40 inserted through the through holes 130a are respectively inserted into the through holes 130a. Has been placed.

  Further, as shown in FIGS. 1, 3, and 4, the board-side connector P includes a cap housing 150 formed of a synthetic resin or the like, and a board 160 supported by the cap housing 150. The cap housing 150 includes a hollow / rectangular cylindrical portion 151 and a flange portion 152 formed by expanding the diameter from the outer peripheral edge portion of one end portion (rear end portion) of the cylindrical portion 151. Further, as shown in FIG. 3, a plate-like partition wall 153 (partition wall 153 formed at a right angle to the tubular portion 151) for partitioning the inside of the tubular portion is provided at one end of the tubular portion 151 in the tubular portion. Is formed. Further, a rectangular slit 153a (see FIG. 3) formed in a size slightly larger than the cross section of the substrate 160 is formed in a substantially central portion of the partition wall 153. The substrate 160 is inserted into the slit 153a, and the substrate 160 is supported inside the cylindrical portion 131. The substrate 160 is printed with an electronic circuit or the like, and a plurality of substrate terminals (the same number of substrate terminals as the contact terminals T accommodated in the harness side connector H) are provided on the end side thereof.

The partition wall 153 is provided with rod-like push-up pins 154 corresponding to the contact terminals T of the harness-side connector H (the same number of push-up pins as the contact terminals T accommodated in the harness-side connector H). Pins 154 (a plurality of push-up pins 154 are provided). Specifically, the partition wall 153 is provided with “a plurality of push-up pins 154” extending in a substantially right angle direction with respect to the partition wall 153 toward the other end portion (front end portion) of the cylindrical portion 151. Yes.
As shown in FIG. 4B, the plurality of push-up pins 154 are formed in parallel so as to alternate on the upper side and the lower side with the substrate 160 interposed therebetween. Then, when the board-side connector P is fitted to the harness-side connector H, each push-up pin 154 is inserted into the cylinder of the box portion 10 of the corresponding “contact terminal T of the harness-side connector H”. It has become.

Next, the configuration of the contact terminal T will be described with reference to FIGS.
Here, FIG. 5 is a perspective view showing a state in which the contact terminals used in the card edge connector of the present embodiment are separated into a base contact and an outer contact. FIG. 6 is a schematic diagram showing a contact terminal used in the card edge connector of the present embodiment, (a) is a schematic diagram showing an internal configuration of the contact terminal, and (b) is a contact terminal. It is the schematic diagram which showed the external appearance. FIG. 7 is a schematic diagram for explaining the internal configuration of the box portion constituting the base contact of the present embodiment. FIG. 8 is a schematic diagram for explaining an internal configuration of the outer contact of the contact terminal according to the present embodiment.

  As shown in FIG. 5, the contact terminal T includes a base contact 1 having an elastic contact piece 15 that contacts a substrate terminal provided on the substrate 160, and an external contact piece 25 that sandwiches the substrate 160 together with the elastic contact piece 15. The outer contact 2 is provided. The base contact 1 and the outer contact 2 are made of metal. The base contact 1 is formed separately from the outer contact 2, and the contact terminal T is configured by inserting and fitting the box portion 10 on the front end side of the base contact 1 into the outer contact 2. It has become.

  As shown in FIGS. 5 and 6, the base contact 1 has a hollow rectangular tube-shaped box portion 10 formed on the front end side (one end side) and the end of the electric wire 40 on the rear end side (the other end side). An electric wire connecting portion 30 is formed for gripping and connecting the portions. Further, the box portion 10 is provided with an elastic contact piece 15 that contacts the substrate terminal of the substrate 160 and sandwiches the substrate 160 together with the outer contact 2. In addition, since the electric wire connection part 30 is the same structure as a well-known technique, the description is abbreviate | omitted.

  As shown in FIGS. 6 and 7, the box portion 10 includes a bottom wall 11, left and right side walls 12 that extend substantially perpendicularly from both sides of the bottom wall 11, and an upper wall 13 that faces the bottom wall 11. And has a hollow rectangular tube shape with both front and rear ends penetrating therethrough. An opening 14 a is formed at the front end of the box portion 10, and a front wall 14 b that closes a part of the opening 14 a (upward portion from the center in the height direction) is formed. A push-up pin 154 provided on the cap housing 150 of the board-side connector P is inserted into the box portion 10 through the opening 14a.

  The bottom wall 11 is formed with a locking hole 11a (see FIGS. 6A and 7) for inserting and locking the elastic locking piece 27 provided in the outer contact 2. The upper wall 13 is formed with a hole 13a (see FIG. 5) having a size that allows the upper portion of the elastic contact piece 15 (the thick portion (contact portion) 15d1 of the upper elastic portion 15d) to protrude. .

The elastic contact piece 15 is provided on the upper surface portion of the bottom wall 11.
Specifically, as shown in FIG. 7, the elastic contact piece 15 includes a plate-like base portion 15a attached to the other end portion (rear end portion) side of the bottom wall 11 and an upper side from the front end portion of the base portion 15a. An upright portion 15b extending from the upper end portion of the upright portion 15b toward one end portion (front end portion) of the bottom wall 11; “U-shape” which is bent in a U-shape from the front end portion of the elastic portion 15 c toward the other end portion (rear end portion) of the bottom wall and extends to the vicinity of the rear end portion of the lower elastic portion 15 c. And an upper elastic portion 15d. The upper elastic portion 15d is formed with a thick portion (contact portion) 15d1 extending in a predetermined dimension in the front-rear direction centering on the convex top portion.

  The lower surface of the base portion 15a is attached to the upper surface of the bottom wall 11 by welding or bonding. The lower elastic portion 15 c is formed in a “reverse shape” in which a substantially middle portion in the length direction is bent concavely toward the bottom wall 11. Further, the upper elastic portion 15 d is formed in a “hoop shape” in which a substantially middle portion in the length direction is bent convexly toward the upper wall 13.

  The elastic contact piece 15 is supported by the bottom portion 11 of the box portion 10 with components other than the base portion 15 a being separated from the box portion 10, and is thick from the hole 13 a of the upper wall 13 of the box portion 10. The part (contact part) 15d1 is housed inside the box part 10 so that it can be inserted and removed freely. The elastic contact piece 15 is accommodated inside the box portion 10 when no external load is applied. According to this configuration, the elastic contact piece 15 is pushed upward by pushing up the lower elastic portion 15 c that is separated from the bottom wall 11, so that the thick wall is formed from the hole 13 a of the upper wall 13 of the box portion 10. The part (contact part) 15d1 can be protruded.

Next, the outer contact 2 constituting the contact terminal T will be described.
As shown in FIGS. 5, 6, and 8, the outer contact 2 has the outer cylindrical portion 20 (see FIG. 6) into which the box portion 10 of the base contact 1 is inserted (internally fitted) and the box portion 10 to be inserted. Then, it has the external contact piece 25 arranged opposite to the elastic contact piece 15. The outer cylinder part 20 includes a bottom wall (outer bottom wall) 21, left and right side walls (outer side walls) 22 extending substantially perpendicularly from both sides of the bottom wall 21, and an opening 23 (length direction from the front end). A hollow square tube having an upper wall 24 (outer upper wall 24) formed with an opening 23) formed over a region of the rear end portion by a predetermined dimension from the intermediate portion of the intermediate portion. It is in the shape.
The other end portion (rear end portion) of the outer cylinder portion 20 is an insertion port 28 (see FIG. 8) for inserting the box portion 10 of the base contact 1.

  Further, an outer contact piece 25 formed in a substantially L shape is erected at the center of the upper wall 20 in the width direction. Further, an elastic locking piece 27 (FIG. 8) that locks in a locking hole 11a provided in the bottom wall 11 of the box portion 10 of the base contact 1 is provided in the width direction and the center portion of the bottom wall 21 of the outer cylindrical portion 20. Reference) is formed.

In the present embodiment, as shown in FIG. 5, the upper wall 24 extends in the width direction (bottom wall 21) from the upper end portion on the other end portion (rear end portion) side of the one side wall 22 toward the other side wall 22. Width direction (width direction of the bottom wall 21) from the upper end portion on the other end portion (rear end portion) side of the other side wall 22 toward the one side wall 22 ) To the center of the second upper wall 24b. Further, the first upper wall 24a and the second upper wall 24b are formed in parallel with the bottom wall 21 and their end portions are in contact with each other.
As described above, in the present embodiment, the upper wall 24 is configured by a pair of components (the first upper wall 24a and the second upper wall 24b), but is not particularly limited thereto. For example, the upper wall 24 may be configured to extend from the upper end portion on the rear end side of one side wall 22 to the upper end portion on the other end side of the other side wall 22.

Further, as shown in FIG. 8, the external contact piece 25 includes a vertical piece 25a extending vertically from the center in the width direction of the upper wall 24 (perpendicular to the upper wall 24), and a vertical piece 25a. It is formed in a substantially L shape having a parallel piece 25b that is bent and extended at a substantially right angle from the upper end portion toward one end portion (front end portion) of the outer cylinder portion 20.
Further, the parallel piece 25b is provided with a convex portion 25b1 protruding downward (in the direction of the bottom wall 21) at a substantially intermediate portion in the length direction, and this convex portion 25b1 becomes a contact portion that contacts the substrate 160. ing.
In addition, in this embodiment, although the convex part 25b1 is provided in the lower end part side of the parallel piece 25b, this is only an example. The parallel piece 25b may be formed in a shape (straight shape) in which the convex portion 25b1 is not provided on the lower end side. In this case, the straight lower end portion of the parallel piece 25b is a contact portion that contacts the substrate 160.

In the present embodiment, as shown in FIG. 5, the external contact piece 25 has a substantially L-shape projecting from the end portion of the first upper wall 24 a (the end portion in contact with the second upper wall 24 b). The first external contact piece 251 and a substantially L-shaped second external contact piece 252 projecting from an end of the second upper wall 24b (an end in contact with the second upper wall 24a). . The first external contact piece 251 is formed in the same shape as the second external contact piece 252 and is disposed so as to face the second external contact piece 252. Further, the opposing surfaces of the first external contact piece 251 and the second external contact piece 252 are in contact with each other.
As described above, in the present embodiment, the external contact piece 25 is configured by a pair of components (the first external contact piece 251 and the second external contact piece 252), but is not particularly limited thereto. For example, the external contact piece 25 may be configured by “one component” standing from the upper wall 24.

  Further, as shown in FIG. 8, the elastic locking piece 27 is formed by cutting and raising from the bottom wall 21, and one end of the bottom wall 21 from a region on the other end (rear end) side of the bottom wall 21. A first slope portion 27a extending obliquely upward toward the front portion (front end portion), a vertical portion 27b extending downward from the end portion of the first slope portion 27a and extending to the lower surface of the bottom wall 21, and an end of the vertical portion 27b And a second inclined surface portion 27 c that is bent obliquely downward from the portion and protrudes from the bottom wall 21.

Then, the box portion 10 of the base contact 1 is inserted into the insertion port 28 (see FIG. 7) at the rear end portion of the outer cylindrical portion 20 of the outer contact 2 having the above-described configuration, and is pushed into the front end portion side of the outer contact 2. A contact terminal T shown in FIG. 6 is formed by fitting the contact 2 and the base contact 1 together.
When the box portion 10 of the base contact 1 is inserted and pushed into the insertion opening 28 of the outer contact 2, the outer contact 2 is inserted into the locking hole 11 a formed in the bottom wall 11 of the box portion 10 of the base contact 1. The elastic locking piece 27 is inserted and locked.

  Next, the manufacturing process of the harness side connector H using the contact terminal T of this embodiment is demonstrated, referring FIG. Here, FIG. 9 is a schematic diagram showing an assembly process of the harness side connector constituting the card edge connector of the present embodiment.

In the manufacturing process of the harness side connector H of the present embodiment, first, a process of assembling the connector housing 100 is performed.
The connector housing 100 includes a base housing 110 and a front housing 120 (see FIG. 9). The connector housing 100 is provided on the front end side of the base housing 110, and the front housing 120 is inserted into a region (gap). Can be assembled by.

  In the assembly process of the connector housing 100, first, the outer contact 2 is attached to each terminal accommodating portion formed inside the front housing 120. When the outer contacts 2 are attached to all the terminal accommodating portions formed in the front housing 120, the front housing 120 is then attached to a region (gap) formed inside the front end portion of the base housing 110. The connector housing 100 is completed. By this step, the connector housing 100 in a state where only the outer contact 2 is mounted is configured.

Next, a step of attaching a block-shaped seal material (a collective seal material formed of rubber or the like) 130 to the connector housing 100 to which the outer contact 2 is attached is performed.
In this step, a block-shaped sealing material (rubber or the like) in which a plurality of through holes 130a are formed in regions (voids) formed on the inside / rear end side of the connector housing 100 to which the outer contact 2 is mounted. The collective seal material 130) formed in (1) is inserted.
The through hole 130 a of the sealing material 130 is formed in a size that allows the base contact 1 and the electric wire 40 to be inserted, and communicates with a terminal accommodating portion formed in the connector housing 100. Further, the same number of through holes 130 a as the contact terminals T attached to the connector housing 100 are provided.

  Next, as shown in FIG. 9, a step of attaching the base contact 1 to which the electric wire 40 is connected to each terminal accommodating portion of the connector housing 100 to which the outer contact 2 and the sealing material 130 are attached, respectively. Do.

  In this step, first, the electric wire 40 is connected to the electric wire connecting portion 30 of the base contact 1. Next, the box portion 10 of the base contact 1 to which the electric wire 40 is connected is inserted through the through hole 130a of the sealing material 130 attached to the rear end portion side of the connector housing 100 (inserted with the box portion 10 at the top). ) Since the elastic contact piece 15 is housed inside the box portion 10, the box portion 10 can be smoothly inserted into the through hole 130a of the sealing material 130. At this time, since the elastic contact piece 15 does not come into contact with the seal material 130, the elastic contact piece 15 is not deformed, and components of the seal material 130, dust, and the like are not attached to the contact portion 15d1.

Further, after the box 10 is inserted into the through hole 130 a of the sealing material 130, the base contact 1 is further pushed into the terminal accommodating portion that communicates with the through hole 130 a of the sealing material 130. When the base contact 1 is pushed into the terminal housing portion of the connector housing 100, the box portion 10 of the base contact 1 is placed in the outer cylindrical portion 20 of the outer contact 2 attached to the front end portion side of the connector housing 100. Will be inserted. Further, when the box portion 10 of the base contact 1 is inserted into the outer cylindrical portion 20 of the outer contact 2, the outer hole 11 a formed in the bottom wall 11 of the box portion 10 of the base contact 1 is inserted into the outer hole 11 a. The contact terminals T are inserted and locked into the elastic locking pieces 27 of the contacts 2 and fitted, and the contact terminals T are assembled in the connector housing 100 (at this time, the base contact 1 is attached to the sealing material 130). The electric wire 40 connected to is inserted.)
When the contact terminal T is formed by inserting the box portion 10 of the base contact 1 into the outer cylindrical portion 20 of the outer contact 2, as shown in FIG. 6, the thick portion (contact portion) of the elastic contact piece 15 is formed. ) 15d1 and the convex portion 25b1 of the external contact piece 25 are arranged to face each other.
When a predetermined number (designed number) of contact terminals T are mounted inside the connector housing 100, the harness-side connector H is completed.

Next, the operation of the contact terminal T when the board-side connector P is fitted to the harness-side connector H will be described with reference to FIG. 3 and FIGS. 10 and 11 described above.
FIG. 10 is a schematic diagram for explaining the operation of the contact terminal when the board-side connector is fitted to the harness-side connector of the present embodiment, and the board-side connector is inserted into the harness-side connector. The inside state is shown. FIG. 11 is a schematic diagram for explaining the operation of the contact terminal when the board-side connector is fitted to the harness-side connector of the present embodiment, and shows a state where the board-side connector is fitted to the harness-side connector. ing.

  Specifically, as shown in FIG. 3, when the board side connector P is not fitted into the harness side connector H, the elastic contact piece of the contact terminal T housed in the harness side connector H is the box 10. It is in a state of being accommodated in a cylinder.

  When the board-side connector P is fitted to the harness-side connector H, the front-end part (right-end part in the figure) of the board-side connector P is pushed in toward the front-end part (left-end part in the figure) of the harness-side connector H. Go. Specifically, the board side connector P is moved and pushed toward the harness side connector H so that the state shown in FIG.

Then, when the board-side connector P shown in FIG. 3 is pushed into the front end portion (left end portion in the drawing) of the harness-side connector H as shown in FIG. 10, it is inserted into the gap 120b (see FIG. 3) of the connector housing 100. The cylindrical portion 151 of the cap housing 150 is inserted, and the end portion side of the substrate 160 is inserted into the slit portion 120a on the front end side of the connector housing 100, so that the upper wall 13 and the external contact piece of the box portion 10 are inserted. 25, the end portion side of the substrate 160 enters the area between the two. At this time, the push-up pin 154 provided in the cap housing 150 is inserted into the opening 14 a on the front end side of the box portion 10 of the connector housing 100, and the push-up pin 154 enters the inside of the box portion 10. In the present embodiment, the push-up pin 154 is designed to enter a region between the lower side of the elastic contact piece 15 and the bottom wall 11 of the box portion 10.
In the state shown in FIG. 10, since the push-up pin 154 has not reached the position where the lower elastic portion 15 c of the elastic contact piece 15 is pushed up, the elastic contact piece 15 remains accommodated in the cylinder of the box portion 10. It is in a state.

  Further, when the board-side connector P is further pushed into the harness-side connector H from the state shown in FIG. 10, the board-side connector P is engaged with the harness-side connector H as shown in FIG. 11.

Specifically, when the board-side connector P in the state shown in FIG. 10 is pushed into the harness-side connector H, the cylindrical portion 151 of the cap housing 150 enters the position behind the gap portion 120b of the connector housing 100. At the same time, the substrate terminal on the end side of the substrate 160 inserted in the slit portion 120 a enters the position facing the hole 13 a of the upper wall 13 of the box portion 10.
Further, the push-up pin 154 inserted into the opening 14a on the front end side of the box portion 10 enters the area between the lower side of the elastic contact piece 15 and the bottom wall 11 of the box portion 10, and the elastic contact piece. 15, the elastic contact piece 15 is pushed upward and biased upward. Then, the elastic contact piece 15 biased upward is the top portion and the vicinity of the top portion (thick portion (contact portion) 15d1) projecting (projecting) from the hole 13a of the upper wall 13 of the box portion 10, It is urged | biased and contact | abutted toward the board | substrate terminal of the board | substrate 160 inserted to the position facing the hole 13a. At this time, the convex portion 25b1 of the parallel piece 25b of the external contact piece 25 is in contact with the back surface of the portion of the substrate 160 where the substrate terminal is located. That is, in the inserted substrate 160, the portion having the substrate terminal is sandwiched from the front and back surfaces by the “elastic contact piece 15 and the external contact piece 25” provided on the contact terminal T, and the elastic contact piece 15 is the substrate. The terminal 160 comes into contact with the board 160 and the contact terminal T is electrically connected.

  Thus, in the present embodiment, the contact terminal T is configured to sandwich the portion where the substrate terminal provided on the substrate 160 is located from the front and back surfaces of the substrate 160 (the portion that contacts the substrate terminal is sandwiched). Conventional technology that does not directly clamp the substrate (contact terminals described in Patent Documents 1 and 2), or conventional technology that does not have a configuration that clamps the contact portion with the substrate terminal. Compared with the contact terminal 200 (see FIG. 14), the substrate terminal can be contacted with a large contact force. In the present embodiment, the contact terminal T directly sandwiches the substrate 160 (the portion where the substrate terminal of the substrate is located), and therefore, when used for a connector (card edge connector) W for mounting a plurality of contact terminals T, Compared with the prior art, the possibility of variations in the contact force of each contact terminal is reduced.

  Further, the contact terminal T of the present embodiment is provided with an outer contact 2 for holding the substrate 160 separately from the base contact 1, and the contact terminal T is inserted into the outer contact 2 by inserting the base contact 1. It is the structure formed.

  Since the base contact 1 and the outer contact 2 are separate, the outer contact 2 is attached to the front side of the connector housing 100 and the rear side of the connector housing 100 is “ A sealing material (collective sealing material) 130 ”having a plurality of through holes 130 a is attached, and then the base contact 1 to which the electric wires 40 are attached is inserted from the rear side of the connector housing 100, and the connector housing 100. The push-in contact terminal T can be completed by inserting the box portion 10 of the base contact 1 into the outer contact 2 attached to the front side. Further, by making the outer contact 2 separate, the size of the base contact 1 inserted through the sealing material 130 can be made smaller than that of the conventional contact terminal 200 shown in FIGS. The installation interval (pitch) can be reduced.

  In the present embodiment, when the board-side connector P is not fitted to the harness-side connector H, the elastic contact piece 15 of the contact terminal T of the harness-side connector H is housed in the cylinder of the box 10. It has become. Therefore, in the manufacturing process of the harness-side connector H described above, the elastic contact piece 15 is inside the box portion 10 while the box portion 10 of the base contact 1 is inserted through the through hole 130a of the sealing material 130. The elastic contact piece 15 does not contact the sealing material. Therefore, in the manufacturing process of the harness-side connector H, the elastic contact piece 15 is not deformed, and the sealing material component, dust, or the like does not adhere to the contact portion 15d1 of the elastic contact piece 15.

  Furthermore, the elastic contact piece 15 of this embodiment is accommodated in the box portion 10 until the board side connector P is fitted to the harness side connector H. Therefore, as shown in FIG. 10, the elastic contact piece 15 does not contact the substrate 160 in the middle of fitting the board-side connector P to the harness-side connector H. The component of the substrate 160, dust or the like does not adhere to the contact portion 15d1 of the contact piece 15. In the present embodiment, as shown in FIG. 11, the elastic contact piece 15 is thickened from the hole 13a of the upper wall 13 of the box portion 10 at the timing when the board terminal to be connected is inserted into a predetermined position. A portion (contact portion) 15d1 protrudes and comes into contact with the substrate terminal.

That is, the card edge connector W according to the present embodiment has another configuration as much as possible until the “thick portion (contact portion) 15d1 of the elastic contact piece 15” connected to the board terminal is connected to the board terminal. Designed not to abut against parts.
Therefore, according to the present embodiment, it is possible to effectively prevent a contact failure or the like caused by deformation of the elastic contact piece 15 or contamination of the contact portion 15d1.

  As described above, according to the present embodiment, the contact terminal T used in a connector such as the card edge connector W can obtain a desired contact force and is used for a connector having a narrow pitch interval. It is possible to provide a contact terminal T capable of Moreover, this embodiment can provide the card edge connector W provided with the harness side connector H provided with said contact terminal T, and the board | substrate side connector P holding the board | substrate 160. FIG.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible within the range of the summary.

W ... Card edge connector H ... Harness side connector 100 ... Connector housing 110 ... Base housing 120 ... Front housing 120a ... Slit part 120b ... Slit part 130 ... Sealing material 130a ... Through hole T ... Contact terminal 1 ... Base contact 10 ... Box part DESCRIPTION OF SYMBOLS 11 ... Bottom wall 11a ... Locking hole 12 ... Side wall 13 ... Upper wall 13a ... Hole part 14a ... Opening part 14b ... Front wall 15 ... Elastic contact piece 15a ... Base part 15b ... Standing part 15c ... Lower elastic part 15d ... Upper elastic part 15d1 ... Thick part (contact part)
30 ... Electric wire connection part 40 ... Electric wire 2 ... Outer contact 20 ... Outer cylinder part 21 ... Bottom wall (outer bottom wall)
22 ... Side wall (outer side wall)
23 ... Opening 24 ... Upper wall (outer upper wall)
24a ... 1st upper wall 24b ... 2nd upper wall 25 ... External contact piece 25a ... Vertical piece 25b ... Parallel piece 25b1 ... Convex part 251 ... 1st external contact piece 252 ... 2nd external contact piece 27 ... Elastic locking piece 27a ... 1st slope part 27b ... Vertical part 27c ... 2nd slope part 28 ... Insertion slot P ... Board side connector 150 ... Cap housing 151 ... Cylindrical part 152 ... Flange part 153 ... Partition wall 153a ... Slit 154 ... Push-up pin 160 ... substrate

Claims (4)

A contact terminal used in a connector for electrically connecting to a substrate terminal provided at an end of the substrate,
A cylindrical box portion is formed on one end side, and an electric wire connection portion is formed on the other end side for gripping and connecting the end portion of the electric wire, and in order to contact the board terminal inside the box portion A base contact in which an elastic contact piece in which a contact portion is formed is accommodated, and
An outer contact having an external contact piece that is configured separately from the base contact and is arranged to face the elastic contact piece when fitted to the box portion of the base contact;
The box portion has a bottom wall, an upper wall, and both side walls. The upper wall is formed with a hole having a size that allows the contact portion of the elastic contact piece to protrude, and has an opening at the front end. Part is formed,
When connecting to the substrate terminal, the end portion side of the substrate is inserted into a region between the upper wall of the box portion and the external contact piece, and a push-up pin is inserted together with the substrate into the opening portion of the front end of the box portion. The inserted push-up pin abuts on the elastic contact piece and pushes it upward, and the contact portion of the elastic contact piece protrudes from the hole in the upper wall and has been inserted. A contact terminal, wherein the contact portion is urged and brought into contact with a substrate terminal of a substrate, and the external contact piece is in contact with a back surface of a portion of the substrate where the substrate terminal is located. The outer contact has an outer cylinder portion into which the box portion of the base contact is inserted and fitted,
On the upper surface portion of the outer cylinder portion, an outer upper wall is provided in which an opening is formed from the front end portion to the rear end portion / near side, and the outer contact piece is erected on the outer upper wall,
The external contact piece includes a vertical piece that extends vertically upward from the outer upper wall, and a parallel piece that is bent and extended perpendicularly from an upper end portion of the vertical piece toward a front end portion of the outer cylinder portion. The contact terminal according to claim 1, wherein the contact terminal is formed in a substantially L-shape. The elastic contact piece includes a base portion attached to a rear end side / upper surface of the bottom wall, a standing portion standing upward from a front end portion of the base portion, and a bottom wall extending from an upper end portion of the standing portion. A lower elastic portion extending toward the front end portion of the lower elastic portion, and a rear end portion of the lower elastic portion that is bent in a U shape from the front end portion of the lower elastic portion toward the rear end portion of the bottom wall. An upper elastic part extending to the vicinity,
The upper elastic portion is formed in a shape that is bent in a convex shape in the middle in the length direction, and the top portion and the vicinity of the top portion are the contact portions,
Furthermore, the said elastic contact piece is accommodated in the inside of the said box part, when the load from the outside is not received, The contact terminal of Claim 1 or 2 characterized by the above-mentioned. A card edge connector comprising a board-side connector holding a board, and a harness-side connector containing contact terminals that are electrically connected to board terminals provided on the end side of the board,
The contact terminal is
A cylindrical box portion is formed on one end side, and an electric wire connection portion is formed on the other end side for gripping and connecting the end portion of the electric wire, and in order to contact the board terminal inside the box portion A base contact in which an elastic contact piece in which a contact portion is formed is accommodated, and
An outer contact having an external contact piece that is configured separately from the base contact and is arranged to face the elastic contact piece when fitted to the box portion of the base contact;
The box portion has a bottom wall, an upper wall, and both side walls. The upper wall is formed with a hole having a size that allows the contact portion of the elastic contact piece to protrude, and has an opening at the front end. Part is formed,
The board-side connector is provided with a substantially rod-shaped push-up pin that can be inserted into the opening at the front end of the box portion of the contact terminal,
When the board-side connector is inserted into and fitted to the harness-side connector, the end side of the board is inserted into a region between the upper wall of the box part and the external contact piece, and the box part The push-up pin is inserted through the opening on the front end side of the first contact portion and abuts against the elastic contact piece to push it upward. The contact portion of the elastic contact piece protrudes from the hole in the upper wall, and the contact portion A card edge connector, wherein the card edge connector is urged and brought into contact with a board terminal of the board, and an external contact piece comes into contact with a back surface of a portion of the board having the board terminal.

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