JP4600305B2 - Male terminal structure - Google Patents

Description

  The present invention relates to a male terminal structure of a metal fitting connected to a female terminal metal fitting.

  At present, HEVs (Hybrid Electric Vehicles) that can reduce harmful gas emissions and have a significant fuel consumption reduction effect are attracting a great deal of attention. The connection between the motor driving the HEV and the inverter is made by a connector, and a large current of 100 A or more is energized depending on the HEV system. As the electric control technology for automobiles advances, connectors are increasingly used in automobiles, but there are few connectors that can handle large currents. As a terminal used for a connector corresponding to a large current, for example, there are a flat male terminal and a female terminal as shown in FIGS.

  As shown in FIG. 4, the male terminal 40 is formed of a single thin plate material, one end of which is formed in a wire connecting portion 41 that connects to another electrical device, and the other end is inserted into contact with the female terminal. The contact portion 42 is formed. The wire connection portion 41 is formed with a device connection hole 43 for fastening the male terminal 40 to another device with a bolt. The size of the male terminal 40 is, for example, about 95 mm wide and about 1.2 mm thick.

  As shown in FIG. 5, the female terminal 50 includes a terminal contact portion 51 that fixes and electrically connects the male terminal 40, and a wire crimping portion 52 that crimps and connects an electric wire, and bends the plate material. Is formed. A leaf spring 53 for fixing the male terminal 40 inside is provided in the terminal contact portion 51.

  As shown in FIG. 6, when the male terminal 40 is inserted into the female terminal 50, the insertion contact portion 42 of the male terminal 40 is pushed and fixed to the terminal contact portion 51 by the leaf spring 53 and is electrically connected. .

JP-A-9-147947

  However, since the male terminal 40 in FIG. 4 has a single flat plate shape, the surface area is small and the heat dissipation is not excellent. Therefore, there is a problem that the temperature of the terminal rises when a large current is applied, which affects the housing resin of the connector and peripheral devices.

  In addition, in order to improve heat dissipation, there is a male terminal which has a square shape and a hollow interior and has a large surface area and cross-sectional area of the terminal. However, when a male terminal having a hollow rectangular structure is used, heat dissipation during energization can be improved, but it is difficult to make a bus connection that is generally used for connection to a device such as an inverter. This is because, when performing bus connection, the terminal on the device side may be bent into an L shape due to the system configuration. At that time, it is very difficult to bend and use a terminal having a square structure because cracks and the like occur, and the above problem cannot be solved.

  Accordingly, an object of the present invention is to provide a male terminal having a structure that solves the above-described problems, has good heat dissipation when energizing a large current, and can be connected to a device.

In order to achieve the above object, the invention of claim 1 has a male terminal having an electric wire connecting part (11) connected to an electric wire at one end and an insertion contact part (12) inserted into a female terminal at the other end. In structure (10) :
The male terminal structure (10)
A rectangular upper surface (16);
A pair of rectangular rib portions (18) connected to each of the pair of long sides of the rectangular upper surface portion (16);
A rectangular tip (14);
A rectangular lower surface (17) having the same dimensions as the upper surface (16),
A pair of rectangular end portions (15) in which device connection holes (13) for fixing to the device are formed;
In the unfolded state, the two ends (15), the bottom surface (17), the tip (14), the top surface (16), and the both ends (15) are connected in a strip shape in this order. It consists of board material (20),
The tip (14) of the plate (20) is bent in a curved shape so that the upper surface (16) and the lower surface (17) are parallel to each other, and the outer edge of the rib (18) is By bending each of the pair of rib portions (18) of the plate (20) toward the lower surface portion (17) so as to be positioned between the upper surface portion (16) and the lower surface portion (17), The insertion contact part (12) in which the hollow part is held inside ,
By aligning the device connection holes (13) formed in each of the pair of both end portions (15) and joining the pair of both end portions (15) to each other, the plate-like wire connection portion ( 11) A male terminal structure characterized by the above.

  The invention according to claim 2 is the male terminal structure according to claim 1, wherein the insertion contact portion is formed so as to be inserted into and connected to the female terminal by the elasticity of the plate material when inserted into the female terminal. .

  ADVANTAGE OF THE INVENTION According to this invention, the heat dissipation at the time of large current energization is good, and the outstanding effect that it can respond to a connection with an apparatus is exhibited.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a preferred embodiment of a male terminal according to the present invention, and FIG. 2 is a development view of the male terminal of FIG.

  As shown in FIG.1 and FIG.2, the male terminal 10 has the electric wire connection part 11 connected to an electric wire in one end, and has the insertion contact part 12 inserted in a female type terminal in the other end. The male terminal 10 according to the present embodiment is bent back from the center portion of the elongated plate member 20 to form an insertion contact portion 12 having a U-shaped cross section, and its both end portions 15 and 15 are joined to each other to connect the wire connection portion 11. It is characterized by the formation.

  The male terminal 10 bends a single plate member 20 to form an insertion contact portion 12 in which the space between the upper surface 16 and the lower surface 17 of the insertion contact portion 12 is hollow. The upper and lower surfaces 16 and 17 of the insertion contact portion 12 are bent into a U-shaped cross section so as to be substantially parallel to each other, and the bent plate material gradually approaches between the wire connection portion 11 and the insertion contact portion 12. Is formed. The distal end 14 of the insertion contact portion 12 is formed in a gently curved shape. The wire connection portion 11 is formed with a device connection hole 13 for electrically connecting to the device and fixing to the device.

  Further, the male terminal 10 is provided on both sides of one plate member (the upper surface 16 of the insertion contact portion 12 in the figure) of the insertion connection portion 12 bent back in a U-shape, and the other plate member (the lower surface 17 of the insertion contact portion 12). Ribs 18 and 18 that are bent toward the front. By forming the ribs 18 and 18 on both sides of the insertion contact portion 12, the hollow portion formed in the insertion contact portion 12 is held.

  According to the male terminal structure of the present embodiment, the insertion contact portion 12 is formed by bending a single plate back, so that the surface area of the insertion contact portion 12 is increased and heat dissipation can be improved. Thereby, the heat radiation efficiency which generate | occur | produces the heat at the time of electricity supply improves, and it can suppress the damage to the housing resin of a connector provided with the male terminal 10, and the influence on peripheral equipment.

  As shown in FIG. 3, the female terminal 50 fixes the male terminal 10 in the female terminal 50 by pushing the insertion contact portion 12 with a leaf spring 53. Therefore, a large force (contact force) is applied to the insertion contact portion 12 from the leaf spring 53, but the male terminal 10 of the present embodiment has both sides of one plate member of the insertion connection portion 12 bent back in a U shape. Furthermore, since the ribs 18 and 18 that are bent toward the other plate material are formed, even if a contact force perpendicular to the upper and lower surfaces 16 and 17 is applied to the insertion contact portion 12, the insertion contact portion 12 is deformed. There is no.

  When the male terminal 10 is inserted into the female terminal 50, the insertion contact portion 12 is inserted and connected to the female terminal 50 by the elasticity of the plate material. Since the insertion contact portion 12 is formed of an elastic plate material and has a hollow portion, the male terminal 10 of the leaf spring 53 is inserted when the male terminal 10 is inserted into contact with the female terminal 50. The male terminal 10 can be fixed in the terminal contact portion 51 even if the force for pushing is slightly weakened.

  Further, since the male terminal 10 is formed by bending the distal end 14 of the insertion contact portion 12 into a gently curved shape, there is no catch when inserted into the female terminal 50, so that the insertion can be smoothly performed. Power can be reduced.

  A single plate is extracted with a mold to form the plate 20 shown in FIG. 2, and the plate is bent. Therefore, the plate can be easily manufactured at low cost.

  The male terminal 10 is used, for example, for connection between an HEV motor and an inverter, and the electric wire connecting portion 11 of the male terminal 10 is connected to a device side such as an inverter. At that time, the device and the male terminal 10 are connected by a bus connection (the device connection hole 13 of the wire connection portion 11 is fastened and fixed to the device with a bolt). In general, a male terminal connected by bus is a flat one, but a L-shaped cross section may be used.

  Therefore, the male terminal 10 can correspond to the bus connection by bending the wire contact portion 11 formed by joining both end portions 15 and 15 of the plate member 20 to each other at a substantially right angle to form an L-shaped cross section. That is, the male terminal 10 of the present embodiment has a structure in which the electric wire connecting portion 11 has two stacked flat plates, and therefore can be easily bent, and the male terminal is formed into an L shape depending on the position on the device side. Even if you do, you can easily adapt.

  Further, the rib 18 may be formed with wavy fins. By forming the fins, the surface area of the ribs 18 can be increased to further improve heat dissipation.

It is a perspective view which shows suitable embodiment of the male terminal structure which concerns on this invention. It is an expanded view of the male terminal of FIG. It is a cross-sectional perspective view which shows the state which fitted the male terminal of FIG. 1 to the terminal which has a female structure. It is a perspective view which shows the conventional male terminal structure. It is a perspective view which shows a female terminal. It is a cross-sectional perspective view which shows the state which inserted the male terminal of FIG. 4 in the female terminal of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Male terminal 11 Electric wire connection part 12 Insertion contact part 13 Equipment connection hole 15 Rib

Claims (2)

In the male terminal structure (10) having a wire connecting part (11) connected to the electric wire at one end and an insertion contact part (12) inserted into the female terminal at the other end,
The male terminal structure (10)
A rectangular upper surface (16);
A pair of rectangular rib portions (18) connected to each of the pair of long sides of the rectangular upper surface portion (16);
A rectangular tip (14);
A rectangular lower surface (17) having the same dimensions as the upper surface (16),
A pair of rectangular end portions (15) in which device connection holes (13) for fixing to the device are formed;
In the unfolded state, the two ends (15), the bottom surface (17), the tip (14), the top surface (16), and the both ends (15) are connected in a strip shape in this order. It consists of board material (20),
The tip (14) of the plate (20) is bent in a curved shape so that the upper surface (16) and the lower surface (17) are parallel to each other, and the outer edge of the rib (18) is By bending each of the pair of rib portions (18) of the plate (20) toward the lower surface portion (17) so as to be positioned between the upper surface portion (16) and the lower surface portion (17), The insertion contact part (12) in which the hollow part is held inside ,
By aligning the device connection holes (13) formed in each of the pair of both end portions (15) and joining the pair of both end portions (15) to each other, the plate-like wire connection portion ( 11) A male terminal structure characterized by the above.   2. The male terminal structure according to claim 1, wherein the insertion contact portion is formed so as to be inserted into and connected to the female terminal with elasticity of a plate member when inserted into the female terminal.

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