JP5890217B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector. In particular, the present invention relates to a structure of an electrical connector in which a contact connected to at least a counterpart contact to which a current for power supply is supplied has a heat dissipation effect.

  Recent miniaturized portable electronic devices such as notebook computers, DSCs (Digital Still Cameras), mobile phones, CD players, or MD players have built-in batteries. In order to connect this battery power source to a circuit board (printed board) provided in the electronic device, a so-called chip-size package wire-to-board connector is used.

  The wire-to-board connector described above is composed of, for example, a socket connector and a base connector. The socket connector has a socket contact in which an end portion of a lead wire extending from the battery is crimped, and the base connector is mounted on a printed circuit board and has a blade contact connected to the socket contact (for example, Patent Documents) 1).

  However, since most of the blade contact according to Patent Document 1 is covered with a housing made of a heat insulating material, when the rated current value supplied from the socket contact increases, there is a problem that the blade contact heats up. .

  In response to the above problems, the present applicant has disclosed an electrical connector configured such that a part of the outer surface of a contact connected to a counterpart contact to which a current for power supply is supplied is exposed from the housing and radiates heat. (For example, refer to Patent Document 2).

JP 2006-128034 A JP 2011-171252 A

  However, the electrical connector according to Patent Document 2 has a concern that it contacts the human body because a part of the outer surface of the contact connected to the counterpart contact to which the power supply current is supplied is exposed from the housing.

  If the electrical connector can be configured so that the contact connected to the counterpart contact to which the power supply current is supplied is not exposed from the housing and has a heat dissipation effect, there is no need to worry about contact with the human body, and the rated current value is increased. It becomes possible. Furthermore, it is possible to suppress the internal heat generation of the electronic device incorporating this electrical connector. The above can be said to be the subject of the present invention.

  The present invention has been made in view of the above problems, and provides an electrical connector having a heat dissipation effect without exposing a contact connected to a counterpart contact to which at least a power supply current is supplied from the housing. The purpose is to do.

  The inventor covers at least a contact connected to a counterpart contact to which a current for power supply is supplied with a housing, and connects the bottom surface of the contact to a heat radiation pattern formed on the mounting surface of the printed circuit board so that heat can be transferred. The present inventors have found that these problems can be solved by configuring an electrical connector, and based on this, the inventors have invented the following new electrical connector.

(1) An electrical connector that is mounted on a printed circuit board and into which a mating connector having at least a first mating contact for connecting a power supply wire is inserted, and into which the mating housing fits, and in this opening A rectangular parallelepiped housing having a continuous hollow contact housing chamber, and one or more first contacts disposed inside the housing and electrically connecting the first mating contact and the printed circuit board; The first contact includes a connection piece connected to the first counterpart contact, and a heat dissipation piece inserted into the housing, and the first contact includes the connection piece and the heat dissipation piece. The connecting piece and the heat dissipating piece are formed on one surface of the printed circuit board so as not to be exposed from the housing except for the bottom surface of the printed circuit board. Tei Ru, electrical connectors are soldered to the heat radiation pattern.

  The electrical connector according to the invention of (1) is mounted on a printed board. In the electrical connector according to the invention of (1), a mating connector having at least a first mating contact for connecting a power supply wire is inserted. The electrical connector includes a rectangular parallelepiped housing and one or more first contacts.

  The housing has an opening into which the mating housing is fitted, and a hollow contact accommodating chamber connected to the opening. The first contact is disposed inside the housing. The first contact electrically connects the first mating contact and the printed board.

  The first contact has a connection piece and a heat dissipation piece. The connecting piece can be connected to the first counterpart contact. The heat radiating piece is inserted into the housing. The connecting pieces and the heat radiating pieces are soldered to a heat radiating pattern whose bottom surface is formed on one surface of the printed board.

  The electrical connector may be a base connector or a jack and is mounted on a printed circuit board. The mating connector may be a plug connector or a power plug, and has at least a first mating contact for connecting a power supply wire. As described later, the mating connector does not exclude the provision of the second mating contact for connecting the signal wires. Moreover, it does not exclude that an electrical connector is provided with the 2nd contact connected with a 2nd other party contact.

  The housing has an insulating property. The insulating housing may be a housing made of a non-conductive material, and a synthetic resin can be molded to obtain an insulating housing having a desired shape.

  The housing may be rectangular, which means that the electrical connector and the mating connector according to the present invention are rectangular connectors having a rectangular coupling surface. The electrical connector according to the present invention has an opening. On the other hand, the mating connector has a header portion. And an opening and a header part can be mutually fitted.

  For example, the first contact is made of a conductive bellows constant, and a conductive first contact having a desired shape can be obtained by punching or bending a conductive metal plate. A copper alloy is preferably used for the first contact in consideration of ease of processing, spring characteristics, conductivity, etc., but is not limited to the copper alloy.

  As will be described later, the first contacts are preferably arranged in a pair on both wings of the housing, and one of the first contacts can be a positive electrode and the other first contact can be a negative electrode. In this case, it is preferable to devise the shape of the opening of the housing so that the polarity of the first mating contact can be correctly connected to the pair of first contacts. Further, a mark for preventing erroneous insertion may be displayed on the outer surface of the housing, or a mark corresponding to the mark may be displayed on the outer surface of the housing of the mating connector.

  The housing is preferably provided with an opening into which the mating housing is fitted on the first side surface (front surface), and a hollow contact accommodating chamber opened on the first side surface. The pair of first contacts can be arranged such that blade-like connection pieces connected to the first counterpart contact are opposed to each other inside the contact accommodating chamber. Moreover, it is preferable to press-fit the heat radiating piece into the housing from the second side surface (rear surface) located in a direction opposite to the first side surface. The first contact is preferably arranged so as not to be exposed from the housing except for the bottom surface of the connection piece and the heat radiation piece, and can prevent contact with the human body.

  It is preferable that one side of the printed board including the heat dissipation pattern is insulated with a resist except for the solder joint portion, and short circuit between patterns and contact of the human body to the pattern can be prevented. The heat dissipation pattern is, as a matter of fact, a copper foil attached to an insulating substrate such as a glass epoxy substrate, but it extends from the region covered by the housing and secures a predetermined region so that heat can be radiated to the outside air. Is preferred.

  In the electrical connector according to the invention of (1), since the housing covers at least the first contact connected to the first mating contact to which the current for power supply is supplied, there is no fear that the human body contacts the first contact. In the electrical connector according to the invention of (1), the bottom surface of the first contact is solder-bonded to the heat radiation pattern formed on one surface of the printed circuit board so that heat can be transferred, so that the rated current value supplied to the printed circuit board Can be increased. And it becomes possible to suppress internal heat_generation | fever of the electronic device which incorporates this electrical connector.

(2) The electrical connector according to (1), further comprising: a press-fitting member that is press-fitted into the housing; and a reinforcing tab having a connector that can be soldered to the printed circuit board.

  The electrical connector according to the invention of (2) is further provided with a reinforcing tab that is inserted into a through-hole provided in the printed circuit board and soldered, so that the support strength to the printed circuit board is reinforced. Further, in the electrical connector according to the invention of (2), since the connector of the reinforcing tab attached in advance to the housing is inserted into the through hole, the electrical connector can be easily positioned with respect to the printed board.

  (3) The electrical connector according to (1) or (2), further including one or more second contacts that electrically connect a second mating contact for connecting a signal wire and the printed circuit board.

  The signal wires can also send and receive signals that control the heat generation of the battery and the internal heat generation of the electronic device.

  (4) The first contact is composed of a pair of first contacts arranged on both wings of the housing, and the second contact is composed of a plurality of second contacts arranged in parallel at the center of the housing. Electrical connector.

  (5) The electrical connector according to any one of (1) to (4), wherein the mating connector is inserted substantially parallel to one surface of the printed circuit board.

  In the electrical connector according to the present invention, at least the first contact connected to the first counterpart contact to which the current for power supply is supplied is covered with the housing, so that there is no fear that the human body contacts the first contact. In the electrical connector according to the present invention, the first contact is solder-bonded to the heat radiation pattern so that heat can be transferred, so that the rated current value supplied to the printed circuit board can be increased. And it becomes possible to suppress internal heat_generation | fever of the electronic device which incorporates this electrical connector.

It is a perspective view which shows the structure of the electrical connector by one Embodiment of this invention, and is the state figure which arrange | positioned the electrical connector by the embodiment, and the other party connector facing. It is a perspective view which shows the structure of the electrical connector by the said embodiment, and is a state figure before mounting the electrical connector by embodiment on a printed circuit board. It is the perspective view which shows the structure of the electrical connector by the said embodiment, and is the figure which looked at the electrical connector and the other party connector by embodiment from the bottom face side. FIG. 2 is a perspective exploded view showing the configuration of the electrical connector according to the embodiment. It is a perspective exploded view which shows the structure of the other party connector. FIG. 6 is a longitudinal sectional view of the electrical connector and the mating connector connected according to the embodiment, and FIG. 6A is a diagram of the state where the first mating contact and the first contact are connected, and FIG. These are the state diagrams which removed the 1st other party contact from Drawing 6 (A). FIG. 7A is a longitudinal sectional view showing a state where the electrical connector and the counterpart connector according to the embodiment are connected, and FIG. 7A is a state diagram where the second counterpart contact and the second contact are connected, FIG. These are the state diagrams which removed the 2nd other party contact from Drawing 7 (A). FIG. 8A is a perspective view of the housing provided in the electrical connector according to the embodiment, FIG. 8A is a perspective view of the housing viewed from the front side, and FIG. 8B is a perspective view of the housing viewed from the back side. . FIG. 9A is an external view of a housing provided in the electrical connector according to the embodiment, FIG. 9A is a plan view of the housing, FIG. 9B is a front view of the housing, and FIG. 9C is a bottom view of the housing. 9D is a rear view of the housing, FIG. 9E is a right side view of the housing, FIG. 9F is a cross-sectional view taken along the line AA in FIG. 9A, and FIG. G) is a cross-sectional view taken along line BB in FIG. 9A. FIG. 10A is a perspective view of the mating housing viewed from the front side, and FIG. 10B is a perspective view of the mating housing viewed from the back side. FIG. 11A is a perspective view of a first contact provided in the electrical connector according to the embodiment, FIG. 11A is a perspective view of one first contact, and FIG. 11B is a perspective view of the other first contact. It is a perspective view of the 2nd contact with which the electrical connector by the embodiment is equipped. It is a perspective view of the reinforcement tab with which the electrical connector by the said embodiment is equipped.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The electrical connector according to an embodiment of the present invention will be described below as a base connector and a mating connector as a plug.

[Configuration of electrical connector]
Initially, the structure of the electrical connector by 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a configuration of an electrical connector according to an embodiment of the present invention, and is a state diagram in which the electrical connector and the mating connector according to the embodiment are arranged to face each other. FIG. 2 is a perspective view illustrating a configuration of the electrical connector according to the embodiment, and is a state diagram before the electrical connector according to the embodiment is mounted on a printed board.

  FIG. 3 is a perspective view illustrating a configuration of the electrical connector according to the embodiment, and is a view of the electrical connector and the mating connector according to the embodiment as viewed from the bottom surface side. FIG. 4 is a perspective exploded view showing the configuration of the electrical connector according to the embodiment. FIG. 5 is an exploded perspective view showing the configuration of the mating connector.

(overall structure)
Referring to FIG. 1 or FIG. 2, the base connector 10 according to the embodiment is mounted on the printed circuit board 1p. The plug 20 according to the embodiment connects a pair of power supply wires 21w and 21w. The plug 20 connects seven signal wires 22w. A plug 20 can be inserted into the base connector 10 substantially parallel to one surface (mounting surface) 11p of the printed board 1p. The base connector 10 according to the embodiment constitutes a horizontally mounted connector in which the plug 20 is inserted substantially parallel to the one surface 11p of the printed circuit board 1p.

  Referring to FIG. 3 or FIG. 4, the base connector 10 includes a rectangular parallelepiped housing 1, a pair of U-shaped first contacts 3a and 3b, and seven plate-like second contacts 3c. The pair of first contacts 3 a and 3 b and the plurality of second contacts 3 c are disposed inside the housing 1.

  3 or 5, the plug 20 includes a rectangular parallelepiped housing (mating housing) 2, a pair of contacts (first mating contacts) 4a and 4b, and seven contacts (second mating contacts) 4c. It has.

  Referring to FIGS. 1 to 3 and 5, the housing 2 includes a header portion 21 and a frame portion 22. The pair of contacts 4a and 4b connect the terminals of a pair of power supply wires 21w and 21w. The contact 4c connects the terminal of the signal electric wire 22w.

  Referring to FIG. 1 or FIG. 2, the housing 1 is provided with an opening 11 into which the header portion 21 is fitted in the first side surface 1 a. Further, the housing 1 has a hollow contact housing chamber 12 that is connected to the opening 11.

  Referring to FIG. 4 or FIG. 5, the first contact 3a has a blade-like connection piece 31 connected to the contact 4a (see FIG. 11A). The first contact 3b has a blade-like connection piece 31 connected to the contact 4b (see FIG. 11B). These connection pieces 31 and 31 are arranged to face each other inside the contact accommodating chamber 12 (see FIG. 1 or FIG. 2).

  Referring to FIG. 3 or FIG. 4, the first contact 3 a has a strip-shaped heat radiation piece 32 to which the base end portion of the connection piece 31 is coupled. The heat radiation piece 32 faces the connection piece 31 (see FIG. 11A). The first contact 3 b has a strip-shaped heat radiation piece 32 to which the base end portion of the connection piece 31 is coupled. The heat radiation piece 32 faces the connection piece 31 (see FIG. 11B).

  1 to 5, when the header portion 21 of the plug 20 is inserted into the opening 11 of the base connector 10, the pair of contacts 4a and 4b can be connected to the pair of first contacts 3a and 3b (see FIG. 6). Further, the contact 4c can be connected to the second contact 3c (see FIG. 7).

  Next, the configuration of the base connector 10 according to the embodiment will be described. FIG. 6 is a longitudinal sectional view showing a state where the electrical connector and the mating connector according to the embodiment are connected, and FIG. 6A is a diagram showing a state where the first mating contact and the first contact are connected. 6 (B) is a state diagram in which the first counterpart contact is removed from FIG. 6 (A).

  FIG. 7 is a longitudinal sectional view showing a state where the electrical connector and the mating connector according to the embodiment are connected, and FIG. 7A is a diagram showing a state where the second mating contact and the second contact are connected. 7 (B) is a state diagram in which the second counterpart contact is removed from FIG. 7 (A).

  FIG. 8 is a perspective view of a housing provided in the electrical connector according to the embodiment. FIG. 8A is a perspective view of the housing as viewed from the front side, and FIG. 8B is a view of the housing as viewed from the back side. It is a perspective view.

  9 is an external view of a housing provided in the electrical connector according to the embodiment. FIG. 9A is a plan view of the housing, FIG. 9B is a front view of the housing, and FIG. 9D is a rear view of the housing, FIG. 9E is a right side view of the housing, and FIG. 9F is a cross-sectional view taken along the line AA in FIG. 9A. FIG. 9G is a cross-sectional view taken along the line BB in FIG. 9A.

  FIG. 10 is a perspective view of the mating housing, FIG. 10A is a perspective view of the mating housing viewed from the front side, and FIG. 10B is a perspective view of the mating housing viewed from the back side. It is. FIG. 11 is a perspective view of a first contact provided in the electrical connector according to the embodiment, FIG. 11A is a perspective view of one first contact, and FIG. 11B is a perspective view of the other first contact. FIG.

  FIG. 12 is a perspective view of a second contact provided in the electrical connector according to the embodiment. FIG. 13 is a perspective view of a reinforcing tab provided in the electrical connector according to the embodiment.

(Configuration of first contact and housing)
Referring to FIG. 2 or FIG. 4 and FIG. 11, the first contact 3a has a heat radiation pattern 31h (FIG. 2) formed on one surface 11p of the printed circuit board 1p with a part of the connection piece 31 and the heat radiation piece 32 protruding. (See Fig. 1) have bottom surfaces 31b and 32b that can be soldered together. Similarly, the first contact 3b has bottom surfaces 31b and 32b that can be soldered to a heat radiation pattern 31h (see FIG. 2) formed on one surface 11p of the printed circuit board 1p.

  Referring to FIG. 3 or FIG. 9, the housing 1 penetrates from the second side surface 1b toward the first side surface 1a, and a pair of vertically long first through holes 15a and 15b into which the connection pieces 31 are press-fitted are opened in both wings. doing. The housing 1 penetrates from the second side surface 1b toward the first side surface 1a, and has a pair of vertically long second through holes 16a and 16b into which the heat radiating pieces 32 are press-fitted.

  3 or 4 and 9, a pair of connection pieces 31 and 31 can be press-fitted into the pair of first through holes 15a and 15b from the second side surface 1b of the housing 1, respectively. A pair of heat radiation pieces 32 and 32 can be inserted into the pair of second through holes 16a and 16b from the second side surface 1b of the housing 1, respectively. The pair of first through holes 15a and 15b communicate with the contact accommodating chamber 12 (see FIG. 9F). And the front-end | tip part side of a pair of connection piece 31 * 31 can be opposingly arranged inside the contact storage chamber 12 (refer FIG. 6). The pair of second through holes 16a and 16b are notched on the second side surface 1b side toward the bottom surface, so that the bottom surface 32b of the heat radiation piece 32 can be exposed.

  Referring to FIG. 3 or FIG. 4 and FIG. 9, the base connector 10 according to the embodiment is directed toward a pair of first through holes 15 a and second through holes 16 a formed in one wing of the housing 1. The first contact 3a can be easily incorporated. Further, the base connector 10 according to the embodiment can easily incorporate the first contact 3b toward the pair of first through hole 15b and second through hole 16b formed in the other wing of the housing 1. it can.

(Configuration of second contact and housing)
Referring to FIG. 12, the second contact 3c has a connection piece 31c and an insertion piece 32c protruding from the base end. Referring to FIG. 9, the housing 1 penetrates from the second side surface 1 b toward the first side surface 1 a, and has a plurality of third through holes 17 c into which the second contacts 3 c are inserted at the center. These third through holes 17c communicate with the contact accommodating chamber 12 (see FIG. 9G).

  With reference to FIG. 9 (B) and FIG. 12, the connection piece 31c can be press-fitted into the upper third through hole 17c. And the front-end | tip part side of the connection piece 31c can be arrange | positioned inside the contact storage chamber 12 (refer FIG. 7). An insertion piece 32c can be inserted into the lower third through hole 17c. The bottom surface 33c of the base end portion of the second contact 3c can be soldered to a signal pattern (not shown) formed on one surface 11p of the printed circuit board 1p (see FIG. 2).

  Referring to FIG. 1, FIG. 2, and FIG. 8, a pair of keys 11 k and 11 k are provided on one inner wall of the opening 11 of the housing 1. On the other hand, referring to FIG. 1 or FIG. 2 and FIG. 5, the header portion 21 of the housing 2 is provided with a pair of key grooves 21k and 21k on one outer wall for fitting and guiding the pair of keys 11k and 11k. Yes. Therefore, when the housing 2 is inserted into the housing 1, connection errors due to the difference in polarity between the first contacts 3a and 3b can be prevented.

  Referring to FIG. 1 or FIG. 5 and FIG. 10, the header portion 21 of the housing 2 is formed with a pair of protrusions 21b and 21b protruding in opposite directions on both side surfaces. On the other hand, the contact accommodating chamber 12 of the housing 1 is provided with a pair of convex portions 11b and 11b (see FIG. 2) with which the pair of protrusions 21b and 21b are engaged on the opposing inner walls. When the header portion 21 is inserted into the contact accommodating chamber 12, it can be realized that the pair of protrusions 21b and 21b are inserted with a click feeling over the pair of convex portions 11b and 11b. On the other hand, when the frame 20 of the housing 2 is gripped and the plug 20 is pulled, the pair of protrusions 21b and 21b can get over the pair of protrusions 11b and 11b, and the plug 20 can be pulled out from the base connector 10.

(Structure of reinforcement tab)
1 to 5 and 13, the base connector 10 according to the embodiment includes a pair of plate-like reinforcing tabs 3d and 3e. These reinforcing tabs 3 d and 3 e have a press-fit element 311 and a connector 312. The press-fitting elements 311 of the pair of reinforcing tabs 3 d and 3 e can be press-fitted from the first side face 1 a of the housing 1.

  1 to 5, when the base connector 10 is attached to the printed circuit board 1p with the pair of reinforcing tabs 3d and 3e fixed to the housing 1, the pair of connectors 312 are opened in the printed circuit board 1p. It can be inserted into the through hole 32h. Then, the bonding strength of the base connector 10 to the printed circuit board 1p can be reinforced by soldering the pair of connectors 312 and 312 to the through holes 32h.

(Composition of counterpart contact)
Next, the structure of the pair of contacts 4a and 4b and the plurality of contacts 4c provided in the plug 20 will be described. Note that the contact 4a and the contact 4b are the same, but for the sake of convenience of explanation, the reference numerals are changed to distinguish them. The contact 4a may be described as a representative.

  Referring to FIG. 5, the contact 4a and the contact 4b are formed of a developed conductive metal plate. The contact 4 a includes a long crimping portion 41 and a contact connecting portion 42. The crimping portion 41 is connected to a power supply electric wire 21w. The contact connecting portion 42 is provided on the proximal end side of the crimping portion 41 and is connected to the connecting piece 31 (see FIG. 4).

  Referring to FIG. 5, the crimping part 41 includes an insulation grip 41 a and a conductor grip 41 b that are opened in a U shape. The insulation grip 41a crimps the covering portion of the electric wire 21w. The conductor grip 41b crimps the core wire of the electric wire 21w. And a pair of contacts 4a and 4b which crimped | bonded the terminal of the electric wire 21w are inserted in the inside of the housing 2 (refer FIG. 3).

  Referring to FIG. 5, the contact connecting portion 42 has a contact portion 42 a having a cross section formed in an Ω shape on the tip end side. Further, the contact connecting portion 42 has a guide portion 42b formed in a box shape on the base end side. The contact part 42a can contact so that the connection piece 31 may be inserted relatively and the connection piece 31 may be clamped. The guide part 42b is held in the accommodation chamber 22h inside the housing 2 (see FIG. 3).

  Referring to FIG. 5, the contact 4c is formed of a developed conductive metal plate. The contact 4c includes a long crimping portion and a contact connecting portion. A signal wire 22w is connected to the crimping portion. The contact connecting portion is provided on the proximal end side of the crimping portion, and is held in the accommodation chamber 23h inside the housing 2 (see FIG. 3). And the contact connection part of the contact 4c is connected to the connection piece 31c of the 2nd contact 3c (refer FIG. 4).

[Electric connector action]
Next, the operation and effect of the base connector 10 according to the embodiment will be described. Referring to FIGS. 1 to 5, the base connector 10 according to the embodiment includes the first contacts 3 a and 3 b connected to the pair of contacts 4 a and 4 b (first counterpart contacts) to which at least a power supply current is supplied. Therefore, there is no need to worry about the human body coming into contact with the first contacts 3a and 3b.

  Referring to FIG. 1 or FIG. 2, the base connector 10 according to the embodiment has a pair of first contacts 3a and 3b soldered to the heat radiation pattern 31h so that heat can be transferred, so that the rating supplied to the printed circuit board 1p. The current value can be increased. And it becomes possible to suppress internal heat_generation | fever of the electronic device incorporating the base connector 10 by embodiment.

  Further, referring to FIG. 3 or FIG. 4 and FIG. 9, the base connector 10 according to the embodiment has a pair of first holes toward a pair of through holes formed by a pair of first through holes and second through holes. Each of the contacts 3a and 3b can be easily incorporated.

  1 to 5, the base connector 10 according to the embodiment further includes a pair of reinforcing tabs 3d and 3e that are inserted into the through holes 32h provided in the printed circuit board 1p and soldered. The support strength to the printed circuit board 1p is reinforced.

  The electrical connector according to the present invention is suitable to be applied to a downsized notebook personal computer equipped with a battery. Use of the electrical connector according to the present invention can contribute to suppressing internal heat generation of a notebook personal computer or the like. If the electrical connector according to the present invention is used, it can contribute to reducing the thickness of a notebook personal computer or the like.

1 housing 1p printed circuit board 2 housing (mating housing)
21w Electric wire (electric power wire)
3a, 3b A pair of first contacts 4a, 4b Contacts (mating contacts)
10 Base connector (electrical connector)
11 opening 11p one side (one side of the printed circuit board)
12 Contact accommodating chamber 20 Plug (mating connector)
31 Connection piece 31h Heat radiation pattern 32 Heat radiation piece

Claims (5)

An electrical connector that is mounted on a printed circuit board and into which a mating connector having at least a first mating contact for connecting a power supply wire is inserted,
A rectangular parallelepiped housing having an opening into which the mating housing is fitted, and a hollow contact housing chamber connected to the opening;
One or more first contacts disposed inside the housing and electrically connecting the first mating contact and the printed circuit board;
The first contact has a connection piece connected to the first counterpart contact, and a heat dissipation piece inserted into the housing,
The first contact is covered so as not to be exposed from the housing except for the bottom surface of the connection piece and the heat dissipation piece,
It said connecting piece and said radiator pieces, Tei Ru is soldered to heat radiation pattern their bottom is formed on one surface of the printed circuit board, the electrical connector. The electrical connector according to claim 1, further comprising a reinforcing tab having a press-fit member that is press-fitted into the housing, and a joint that can be soldered to the printed circuit board.   The electrical connector according to claim 1, further comprising one or more second contacts that electrically connect a second mating contact for connecting a signal wire and the printed circuit board. The first contact comprises a pair of first contacts disposed on both wings of the housing;
The electrical connector according to claim 3, wherein the second contact includes a plurality of second contacts arranged in parallel in a central portion of the housing. The electrical connector according to claim 1, wherein the mating connector is inserted substantially parallel to one surface of the printed circuit board.

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