Housing Unit

Abstract

To provide a housing unit which can improve reliability in electrical connection between a terminal fitting and a mating terminal.SOLUTION: A housing unit 1 comprises: a terminal fitting 2 which is made of a continuous conductor plate having a first terminal part 12 from which a plurality of first tab parts 18 extends, a second terminal part 14 from which a plurality of second tab parts 21 extends, a connection part 13 which connects the first and second terminal parts 12, 14 to each other, and a contact part 16 which is continuous with a first tab connecting part 17 and is connected to an external terminal 6; and a housing 3 where the terminal fitting 2 is inserted and housed inside housing chambers 31 to 33 in a predetermined insertion direction. The terminal fitting 2 has heat radiation plate parts 24, 25 which extend from at least one of the connection part 13 and a second tab connecting part 19 in a direction different from the insertion direction. At least part of the heat radiation plate parts 24, 25 is exposed to the outside of the housing 3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a housing unit including a terminal fitting having a plurality of tab portions arranged thereon and a housing for accommodating the terminal fitting. [Background technology]

[0002] Conventionally, terminal fittings having multiple tabs for electrical connection with mating terminals have been proposed. Such terminal fittings are generally manufactured by processing a continuous conductive plate, and are used as joint terminals for connecting multiple circuits or as earth terminals for grounding multiple circuits.

[0003] In one conventional housing unit, this type of terminal fitting is accommodated in an accommodating chamber of the housing and used as an earth terminal. Specifically, a part of the terminal fitting is electrically connected to a predetermined earth point (e.g., the body frame of an automobile) so that a plurality of circuits connected to mating terminals connected to a plurality of tab portions are collectively grounded (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-073911 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the conventional housing unit described above, the mating terminal (so-called female terminal) has a spring-like contact that elastically contacts the tab portion of the terminal fitting, thereby electrically connecting the mating terminal and the tab portion. Generally, the spring-like contact and the tab portion contact each other by point contact or surface contact, so that the contact area between them is small and the contact resistance value at the contact point between them is large. Therefore, when electricity is applied, the amount of heat generated at the contact point due to Joule heat is particularly large. Furthermore, since the contact point between the mating terminal and the tab portion is generally located inside the housing chamber, it is difficult to efficiently release the heat generated at the contact point to the outside of the housing.

[0006] As described above, the elasticity of the spring contact may decrease when heat generated at the contact point between the spring contact and the tab portion is transferred to the spring contact. In this case, the contact load between the two at the contact point decreases, which further increases the contact resistance at the contact point. Since an increase in the contact resistance at the contact point can be a factor in reducing the reliability of the electrical connection between the mating terminal and the spring contact, it is desirable to suppress this as much as possible. In particular, when a terminal fitting has multiple tab portions (i.e., multiple contacts), the total amount of heat generated by the entire terminal fitting increases, which is thought to further increase the possibility of the reliability of the electrical connection being impaired as described above.

[0007] An object of the present invention is to provide a housing unit capable of improving the reliability of electrical connection between a terminal fitting and a mating terminal. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the housing unit according to the present invention has the following features.

[0009] The first tab portions are arranged at intervals from the first tab connecting portion. In front of the front-to-rear direction The first terminal portion extends from the second tab connecting portion so that the second tab portions are arranged at intervals. On the fronta terminal fitting including a second terminal portion extending outward, a connecting portion connecting the first terminal portion and the second terminal portion, and a contact portion connected to the first tab connecting portion and to be connected to an external terminal, the first terminal portion, the second terminal portion, the connecting portion, and the contact portion being formed of a continuous conductive plate; a housing having an accommodating chamber for accommodating the terminal metal fitting, the terminal metal fitting being inserted and accommodated inside the accommodating chamber in a predetermined insertion orientation; A housing unit comprising: The terminal fitting is The connecting portion and has a narrow plate shape extending in the front-rear direction. A heat sink portion is provided. The rear end of the heat sink portion is located rearward of the rear end of the accommodation chamber, The heat sink portion The rear end , exposed to the outside of the storage chamber; It is a housing unit. a terminal fitting comprising: a first terminal portion extending forward in a front-rear direction from a first tab connecting portion so that a plurality of first tab portions are aligned at intervals in the left-right direction; a second terminal portion extending forward from the second tab connecting portion so that a plurality of second tab portions are aligned at intervals in the left-right direction; a connecting portion connecting the first terminal portion and the second terminal portion; and a contact portion connected to the first tab connecting portion and to be connected to an external terminal, wherein the first terminal portion, the second terminal portion, the connecting portion, and the contact portion are formed from a continuous conductive plate; a housing having an accommodating chamber for accommodating the terminal metal fitting, the terminal metal fitting being inserted and accommodated inside the accommodating chamber in a predetermined insertion orientation; A housing unit comprising: The terminal fitting is a heat dissipation plate portion extending from the second tab connecting portion to a rear side in the front-rear direction and having a flat plate shape extending in the left-right direction, a rear end of the heat dissipation plate portion is located rearward of a rear end of the accommodation chamber, so that the rear end portion of the heat dissipation plate portion is exposed to the outside of the accommodation chamber. It is a housing unit. Effect of the Invention

[0010] According to the housing unit of the present invention, the heat sink portion of the terminal metal fitting extends from at least one of the connecting portion and the second tab connecting portion of the terminal metal fitting in a direction different from the insertion direction of the terminal metal fitting into the housing. At least a part of the heat sink portion is exposed to the outside of the housing chamber. Therefore, when electricity is applied, heat generated at the contact points between each of the multiple first tab portions and the multiple second tab portions and the mating terminal is transferred to the heat sink portion through the terminal metal fitting itself, which is a continuous conductive plate, and is released from the heat sink portion to the outside of the housing chamber. As a result, compared to a housing unit using a conventional terminal metal fitting that does not have a heat sink portion, an increase in the contact resistance value caused by heat generated at the contact points between each tab portion and the terminal metal fitting can be suppressed. Therefore, the housing unit of this configuration can improve the reliability of the electrical connection between the terminal metal fitting and the mating terminal.

[0011] The present invention has been briefly described above. The details of the present invention will become clearer by reading the detailed description of the invention described below with reference to the accompanying drawings. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing a housing unit according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a terminal fitting and a housing which constitute the housing unit shown in FIG. 1, and a mating terminal connected to an electric wire. [Diagram 3] FIG. 3 is a front view of the terminal fitting shown in FIG. [Figure 4] FIG. 4 is a top view of the housing unit shown in FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line AA of FIG. [Figure 6] FIG. 6 is a view of a housing unit according to a second embodiment of the present invention, corresponding to FIG. [Figure 7] FIG. 7 is a perspective view of the terminal fitting shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] First Embodiment Hereinafter, a housing unit 1 according to a first embodiment of the present invention will be described with reference to the drawings. For ease of explanation, "front", "rear", "left", "right", "upper" and "lower" are defined as shown in Figs. 1 to 7. The "front-rear direction", "left-right direction" and "up-down direction" are mutually perpendicular. The front-rear direction coincides with the attachment direction of the terminal fitting 2 to the housing 3 and the insertion direction of the mating terminal 4 (see Fig. 2) connected to the end of the electric wire 5 into the housing 3.

[0014] 1 and 2, the housing unit 1 includes a terminal fitting 2 and a housing 3 to which the terminal fitting 2 is attached from the rear side. The terminal fitting 2 is electrically connected to a predetermined earth point 6 (see FIG. 1, for example, the body frame of an automobile) and a plurality of mating terminals 4 (see FIG. 2) connected to ends of a plurality of electric wires 5 are inserted into the housing 3 from the front side, whereby the housing unit 1 collectively performs a function of grounding (earthing) a plurality of electric wires 5 (i.e., a plurality of circuits) connected to a plurality of mating terminals 4 electrically connected to the terminal fitting 2. Each member constituting the housing unit 1 will be described below.

[0015] First, the terminal fitting 2 will be described. The terminal fitting 2 is formed by performing a predetermined bending process on a preform obtained by punching a flat conductive plate. As shown in Figs. 2 and 3, the terminal fitting 2 has a three-dimensional shape integrally including a main body 11 having a substantially rectangular flat plate shape long in the left-right direction, a first terminal portion 12 located in front of the main body 11 and extending in the left-right direction, a pair of left and right connecting portions 13 extending upward from both left and right ends of the first terminal portion 12, a second terminal portion 14 extending in the left-right direction so as to connect the upper ends of the pair of left and right connecting portions 13, a substantially rectangular flat step portion 15 extending downward from the rear end edge of the main body 11 and long in the left-right direction, and a flat fixing portion 16 extending rearward from the lower end edge of the step portion 15. The fixing portion 16 has a through hole 22 formed therethrough in the plate thickness direction (vertical direction). Furthermore, anti-rotation pieces 23 are formed on the periphery of the fixed portion 16 (see Figs. 1 to 4). The functions of the through holes 22 and the anti-rotation pieces 23 will be described later.

[0016] The first terminal portion 12 and the second terminal portion 14 are arranged three-dimensionally so that their left ends are connected to each other by the left-side connecting portion 13 and their right ends are connected to each other by the right-side connecting portion 13, so that they face each other with a gap in the vertical direction and extend parallel to each other in the horizontal direction.

[0017] As shown in Fig. 2 and Fig. 3, the first terminal portion 12 is composed of a first tab connecting portion 17 located on the front side of the main body portion 11 and having a generally rectangular flat plate shape elongated in the left-right direction, and a plurality of first tab portions (male terminal portions) 18 extending forward at regular intervals in the left-right direction from a front end edge extending in the left-right direction of the first tab connecting portion 17. Similarly, the second terminal portion 14 is composed of a second tab connecting portion 19 located on the upper side of the first tab connecting portion 17 and having a generally rectangular flat plate shape elongated in the left-right direction, and a plurality of second tab portions (male terminal portions) 21 extending forward at regular intervals in the left-right direction from a front end edge extending in the left-right direction of the second tab connecting portion 19. The plurality of first tab portions 18 and the plurality of second tab portions 21 are arranged so as to be aligned parallel to each other in the left-right direction with a gap therebetween in the up-down direction, and the tips of the plurality of first tab portions 18 and the tips of the plurality of second tab portions 21 are arranged at the same position in the front-rear direction. In the left-right direction, the first tab portions 18 are located between the second tab portions 21 adjacent to each other in the left-right direction, and the second tab portions 21 are located between the first tab portions 18 adjacent to each other in the left-right direction.

[0018] 2 and 3, a pair of elongated plate-like heat dissipation plate portions 24 are formed on the outer left and right edges of the pair of left and right connecting portions 13, extending rearward (in a direction different from the direction in which the terminal fittings 2 are inserted into the housing 3). The action and effect of providing the pair of left and right heat dissipation plate portions 24 will be described later.

[0019] Next, the housing 3 will be described. The housing 3 is a resin molded body, and has a generally rectangular tubular shape that is flat in the vertical direction and extends in the front-rear direction as shown in Fig. 2. In the hollow portion of the housing 3, a first accommodating chamber 31 for accommodating the first terminal portion 12 (the plurality of first tab portions 18 and the first tab connecting portion 17) of the terminal fitting 2, a second accommodating chamber 32 for accommodating the second terminal portion 14 (the plurality of second tab portions 21 and the second tab connecting portion 19) of the terminal fitting 2, and a pair of left and right connecting portion accommodating chambers 33 for accommodating the pair of left and right connecting portions 13 of the terminal fitting 2 are defined. Each member that constitutes the housing unit 1 has been described above.

[0020] The housing unit 1 shown in FIG. 1 is obtained by inserting the terminal fittings 2 into the housing 3 from the rear side to the front side (i.e., in the insertion direction). When the insertion of the terminal fittings 2 into the housing 3 is completed (when the housing unit 1 is assembled), the first terminal portion 12 of the terminal fittings 2 is accommodated in the first accommodating chamber 31 of the housing 3, the second terminal portion 14 of the terminal fittings 2 is accommodated in the second accommodating chamber 32 of the housing 3, and the pair of left and right connecting portions 13 of the terminal fittings 2 are accommodated in the pair of left and right connecting portion accommodating chambers 33 of the housing 3. The rear ends of the pair of left and right heat sink portions 24 are located rearward of the rear end of the housing 3 as shown in FIGS. 1 and 4. Therefore, the rear ends of the pair of left and right heat sink portions 24 are exposed to the outside of the housing 3.

[0021] As shown in Figs. 1, 2 and 5, in the housing unit 1, a plurality of mating terminals (female terminals) 4 arranged in the left-right direction in two upper and lower rows connected to the ends of a plurality of electric wires 5 are inserted into the housing 3 from the front side and accommodated. As shown in Figs. 2 and 5, the mating terminal 4 integrally includes a box-shaped female terminal portion 41 into which the first tab portion 18 or the second tab portion 21 of the terminal fitting 2 is inserted, and an electric wire connecting portion 42 connected to the ends of the electric wires 5. A spring-like contact 43 is provided inside the female terminal portion 41 (see Fig. 5). The plurality of mating terminals 4 arranged in the lower row are accommodated in the first accommodation chamber 31 such that each spring-like contact 43 is in elastic contact with the corresponding first tab portion 18, and are electrically connected to each of the plurality of first tab portions 18. Each of the plurality of mating terminals 4 accommodated in the first accommodating chamber 31 engages with a corresponding lance 34 (see FIG. 5) provided in the first accommodating chamber 31, thereby preventing the terminals from slipping out forward from the first accommodating chamber 31. The plurality of mating terminals 4 arranged in the upper row are accommodated in the second accommodating chamber 32 such that the respective spring-like contacts 43 are in elastic contact with the corresponding second tab portions 21, thereby electrically connecting the respective second tab portions 21. Each of the plurality of mating terminals 4 accommodated in the second accommodating chamber 32 engages with a corresponding lance 35 (see FIG. 5) provided in the second accommodating chamber 32, thereby preventing the terminals from slipping out forward from the second accommodating chamber 32.

[0022] The housing unit 1 to which the plurality of electric wires 5 are connected in this manner is fixed to a predetermined earth point 6 (such as a body frame of an automobile) by fastening the fixing portion 16 of the terminal fitting 2 to the earth point 6, as shown in Fig. 1. The fixing portion 16 is fastened to the earth point 6, for example, as shown in Fig. 1, by inserting a stud bolt 7 provided at the earth point 6 into a through hole 22 of the fixing portion 16 and fastening a nut 8 to the stud bolt 7. During this fastening (fastening of the nut 8), a rotation prevention piece 23 provided on the fixing portion 16 engages with a locking hole 6a (see Fig. 8, etc.) provided at the earth point 6, thereby preventing so-called co-rotation of the fixing portion 16 (i.e., the terminal fitting 2). As a result, the plurality of electric wires 5 (i.e., a plurality of circuits) connected to the plurality of mating terminals 4 conductively connected to the terminal fitting 2 are collectively grounded (earthed).

[0023] As described above, in the housing unit 1 according to the first embodiment, the spring contact 43 of the mating terminal 4 elastically contacts the tab portion (first tab portion 18 or second tab portion 21) of the terminal fitting 2, so that the mating terminal 4 and the tab portion are electrically connected to each other. Here, due to the small contact area between the spring contact 43 and the tab portion, the contact point between the spring contact 43 and the tab portion becomes hot due to Joule heat generated when electricity is applied. If the elastic force of the spring contact 43 decreases due to the heat generated at the contact point, the contact load between the spring contact 43 and the tab portion decreases, and the electrical resistance value at the contact point between the two further increases. As a result, the reliability of the electrical connection between the mating terminal 4 and the spring contact 43 may be impaired. In particular, when there are multiple tab portions (i.e., contact points) like the terminal fitting 2, the total heat generation amount of the entire terminal fitting 2 increases, which may further increase the possibility of the reliability of the electrical connection being impaired.

[0024] In this regard, according to the terminal fitting 2 according to the first embodiment, a pair of left and right heat sink portions 24 extend from a pair of left and right connecting portions 13 of the terminal fitting 2 in a direction (rearward) different from the direction in which the terminal fitting 2 is inserted into the housing 3. The rear end portions of the pair of left and right heat sink portions 24 are exposed to the outside of the housing 3. Therefore, when the housing unit 1 is energized, heat generated at the contact points between each of the first tab portions 18 and the second tab portions 21 and the mating terminal 4 is transferred to the pair of left and right heat sink portions 24 through the terminal fitting 2 itself, which is a continuous conductive plate, and is released to the outside of the housing 3 from the pair of left and right heat sink portions 24. As a result, compared to a housing unit using a conventional terminal fitting not having a heat sink portion, an increase in contact resistance caused by heat generated at the contact points between each tab portion (the first tab portion 18 or the second tab portion 21) and the terminal fitting 2 can be suppressed. Therefore, the housing unit 1 according to the first embodiment can improve the reliability of the electrical connection between the terminal fitting 2 and the mating terminal 4.

[0025] <Second embodiment> In the housing unit 1 of the first embodiment described above, a pair of left and right heat sink portions 24 serving as the "heat sink portion" of the present invention extend from a pair of left and right connecting portions 13 of the terminal fittings 2 in a direction (rearward) different from the direction in which the terminal fittings 2 are inserted into the housing 3 (see Figures 1 to 4).

[0026] In contrast, in the housing unit 1 of the second embodiment, as shown in Figure 7, a single flat heat sink portion 25 extending in the left-right direction serves as the "heat sink portion" of the present invention, and extends from the second tab connecting portion 19 of the terminal fitting 2 in a direction (rearward) different from the insertion direction of the terminal fitting 2 into the housing 3.

[0027] As shown in FIG. 6, when the insertion of the terminal fittings 2 into the housing 3 is completed (when the assembly of the housing unit 1 is completed), the rear end of the heat sink portion 25 is located rearward of the rear end of the housing 3. That is, the rear end of the heat sink portion 25 is exposed to the outside of the housing 3. The heat sink portion 25 of the second embodiment can also dissipate heat generated at the contact points between the first tab portions 18 and the second tab portions 21 and the mating terminals 4 to the outside of the housing 3 when the housing unit 1 is energized, by a mechanism similar to that of the pair of left and right heat sink portions 24 of the first embodiment. As a result, like the first embodiment, the housing unit 1 of the second embodiment can also improve the reliability of the electrical connection between the terminal fittings 2 and the mating terminals 4.

[0028] <Other aspects> The present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

[0029] In the first embodiment, in the terminal fitting 2, a pair of left and right heat dissipation plate portions 24 are provided on the pair of left and right connecting portions 13 of the terminal fitting 2, while a single heat dissipation plate portion 25 is not provided on the second tab connecting portion 19 of the terminal fitting 2. In the second embodiment, in the terminal fitting 2, a single heat dissipation plate portion 25 is provided on the second tab connecting portion 19 of the terminal fitting 2, while a pair of left and right heat dissipation plate portions 24 are not provided on the pair of left and right connecting portions 13 of the terminal fitting 2. In contrast, in the terminal fitting 2, a pair of left and right heat dissipation plate portions 24 may be provided on the pair of left and right connecting portions 13 of the terminal fitting 2, and a single heat dissipation plate portion 25 may be provided on the second tab connecting portion 19 of the terminal fitting 2.

[0030] In each of the above embodiments, the left ends of the first terminal portion 12 and the second terminal portion 14 are connected to each other by the left-side connecting portion 13, and the right ends of the first terminal portion 12 and the second terminal portion 14 are connected to each other by the right-side connecting portion 13. In contrast, while one of the left ends and one of the right ends of the first terminal portion 12 and the second terminal portion 14 are connected to each other by the connecting portion 13, the other of the left ends and the other of the right ends of the first terminal portion 12 and the second terminal portion 14 may not be connected to each other and each may be a free end.

[0031] Here, the features of the above-described embodiment of the housing unit 1 according to the present invention will be briefly summarized and listed in the following [1] to [2].

[0032] [1] a terminal fitting (2) comprising: a first terminal portion (12) extending from a first tab connecting portion (17) such that a plurality of first tab portions (18) are arranged at intervals; a second terminal portion (14) extending from a second tab connecting portion (19) such that a plurality of second tab portions (21) are arranged at intervals; a connecting portion (13) connecting the first terminal portion (12) and the second terminal portion (14); and a contact portion (16) connected to the first tab connecting portion (17) and to be connected to an external terminal (6), wherein the first terminal portion (12), the second terminal portion (14), the connecting portion (13), and the contact portion (16) are formed from a continuous conductive plate; a housing (3) having accommodating chambers (31-33) for accommodating the terminal fittings (2), the terminal fittings (2) being inserted and accommodated inside the accommodating chambers (31-33) in a predetermined insertion direction; A housing unit (1) comprising: The terminal fitting (2) is a heat sink portion (24, 25) extending from at least one of the connecting portion (13) and the second tab connecting portion (19) in a direction different from the insertion direction, At least a part of the heat sink portion (24, 25) is exposed to the outside of the accommodation chamber (31 to 33). Housing unit(1).

[0033] According to the housing unit having the configuration of [1] above, the heat sink portion of the terminal metal extends from at least one of the connecting portion and the second tab connecting portion of the terminal metal in a direction different from the insertion direction of the terminal metal into the housing. At least a part of the heat sink portion is exposed to the outside of the housing chamber. Therefore, when electricity is applied, heat generated at the contact points between each of the first tab portions and the second tab portions and the mating terminal is transferred to the heat sink portion through the terminal metal itself, which is a continuous conductive plate, and is released from the heat sink portion to the outside of the housing chamber. As a result, compared to a housing unit using a conventional terminal metal without a heat sink portion, an increase in the contact resistance caused by heat generated at the contact points between each tab portion and the terminal metal can be suppressed. Therefore, the housing unit having this configuration can improve the reliability of the electrical connection between the terminal metal and the mating terminal.

[0034] [2] In the housing unit (1) described in [1] above, The terminal fitting (2) has a plurality of the heat sink portions (24). Housing unit(1).

[0035] According to the housing unit having the configuration [2] above, the terminal fitting has a plurality of heat sink portions, which makes it possible to more efficiently dissipate heat generated at the contact points between the mating terminals and each of the first and second tab portions to the outside of the housing. [Explanation of symbols]

[0036] 1 Housing Unit 2 Terminal fitting 3. Housing 6 Earth point (external terminal) 12 1st terminal section 13 Connecting part 14 2nd terminal section 16 Fixed part (contact part) 17 First tab connection part 18 First tab section 19 Second tab connection part 21 Second tab section 24 Heat sink section 25 Heat sink section 31 First Detention Room (Detention Room) 32 Second Detention Room (Detention Room) 33 Connection compartment (compartment)

Claims

1. a terminal fitting comprising: a first terminal portion extending forward in a front-to-rear direction from a first tab connecting portion so that a plurality of first tab portions are arranged at intervals; a second terminal portion extending forward from the second tab connecting portion so that a plurality of second tab portions are arranged at intervals; a connecting portion connecting the first terminal portion and the second terminal portion; and a contact portion connected to the first tab connecting portion and to be connected to an external terminal, wherein the first terminal portion, the second terminal portion, the connecting portion, and the contact portion are formed of a continuous conductive plate; a housing having an accommodating chamber for accommodating the terminal metal fitting, the terminal metal fitting being inserted and accommodated inside the accommodating chamber in a predetermined insertion orientation; A housing unit comprising: The terminal fitting is a heat dissipation plate portion extending rearward in the front-rear direction from the connecting portion and having an elongated plate shape extending in the front-rear direction, a rear end of the heat dissipation plate portion is located rearward of a rear end of the accommodation chamber, so that the rear end portion of the heat dissipation plate portion is exposed to the outside of the accommodation chamber. Housing unit.

2. A terminal fitting comprising: a first terminal portion extending forward in the front-to-back direction from a first tab connecting portion so that a plurality of first tab portions are aligned at intervals in the left-right direction; a second terminal portion extending forward from the second tab connecting portion so that a plurality of second tab portions are aligned at intervals in the left-right direction; a connecting portion connecting the first terminal portion and the second terminal portion; and a contact portion connected to the first tab connecting portion and to an external terminal, wherein the first terminal portion, the second terminal portion, the connecting portion, and the contact portion are formed from a continuous conductor plate; a housing having an accommodating chamber for accommodating the terminal metal fitting, the terminal metal fitting being inserted and accommodated inside the accommodating chamber in a predetermined insertion orientation; A housing unit comprising: The terminal fitting is a heat dissipation plate portion having a flat plate shape extending from the second tab connecting portion to a rear side in the front-rear direction and extending in the left-right direction, a rear end of the heat dissipation plate portion is located rearward of a rear end of the accommodation chamber, so that the rear end portion of the heat dissipation plate portion is exposed to the outside of the accommodation chamber. Housing unit.

Images