Male connector

Abstract

[Problem] To provide a male connector capable of preventing a short circuit due to thread burrs while reducing the pitch between terminals. [Solution] A male terminal (2) includes a rod-shaped portion (20), a pair of first protruding portions (21), and a pair of second protruding portions (22). The male housing (3) includes a barrel portion surrounding one end portion of the male terminal in the length direction to receive a mating connector, and a terminal holding portion (31) holding the male terminal (2). The terminal insertion hole (32) includes a press-fit portion (32c) to which a portion of the male terminal (2) on which the pair of first protruding portions (21) and the pair of second protruding portions (22) are formed is press-fitted, and a housing portion (32b) that is closer to the cylinder portion (33) side than the press-fit portion (32c) and that has a larger cross-sectional area than the press-fit portion (32c). There is a gap between the inner surface of the receiving portion (32b) and the male terminal for receiving thread burrs generated during press-fit of the male terminal.

Description

Technical Field

[0001] This invention relates to a male connector comprising a male terminal and a male housing. Background Technology

[0002] As an example of a traditional male connector, there exists Figure 5 The structure shown is illustrated in Patent Document 1. Figure 5 The male connector shown includes a plurality of male terminals 505 and a connector housing 503 that holds the plurality of male terminals 505.

[0003] In the connector housing 503, a plurality of terminal insertion holes 537 and a plurality of crimping shoulder receiving portions 539 are formed thereon. The terminal insertion holes 537 are formed by being surrounded by crimping retaining walls 540. Bend-allowing portions 541 are formed between the crimping retaining walls 540 of adjacent terminal insertion holes 537. The crimping retaining portion 553 of the male terminal 505 is crimped into the terminal insertion hole 537. The crimping shoulder 552 of the male terminal 505 is crimped into the crimping shoulder receiving portion 539.

[0004] Regarding the aforementioned connector, when the crimp-retaining portion 553 of the male terminal 505 is crimped into the terminal insertion hole 537, the crimp-retaining wall portion 540 bends towards the bending tolerance portion 541. Therefore, the friction between the crimp-retaining portion 553 and the crimp-retaining wall portion 540 decreases, thereby suppressing the peeling of the metal plating formed on the surface of the male terminal 505 and suppressing the formation of thread burrs. Thread burrs can cause short circuits. Furthermore, after crimping, the crimp-retaining wall portion 540 recovers its elasticity and grips the crimp-retaining portion 553. Therefore, the crimp-retaining portion 553 is held by the crimp-retaining wall portion 540.

[0005] [List of Citations]

[0006] [Patent Literature]

[0007] [Patent Document 1] JP 2013-235772A Summary of the Invention

[0008] [Technical Issues]

[0009] In the conventional connector described above, by providing a bend-tolerant portion 541 in the connector housing 503, the formation of thread burrs caused by the peeling off of the metal plating of the male terminal 505 during assembly can be suppressed. However, since the connector housing 503 includes the bend-tolerant portion 541, there is a technical problem that the spacing between the terminals increases.

[0010] The present invention aims to provide a male connector that can prevent short circuits caused by thread burrs while reducing the spacing between terminals.

[0011] [Solution to the problem]

[0012] The present invention is a male connector comprising a male terminal and a male housing, characterized in that the male terminal is formed with a protrusion extending along the width direction of the male terminal, the male housing comprises a cylindrical portion and a terminal retaining portion, the cylindrical portion is configured to receive a mating connector around one end of the male terminal in the length direction, and the terminal retaining portion is configured to retain the male terminal, the terminal retaining portion being open on the cylindrical portion side and the opposite side, and including a terminal insertion hole through which the male terminal is inserted, the terminal insertion hole comprising a crimping portion and a receiving portion, the portion of the male terminal having the protrusion formed being crimped to the crimping portion, and the receiving portion being formed closer to the cylindrical portion (33) than the crimping portion, the cross-sectional area of ​​the receiving portion being larger than the cross-sectional area of ​​the crimping portion, and a gap being provided between the inner surface of the receiving portion and the male terminal.

[0013] [The effects of the invention]

[0014] According to the present invention, a male connector can be provided that can prevent short circuits caused by thread burrs while reducing the spacing between terminals. Attached Figure Description

[0015] Figure 1 This is a front view of a male connector according to an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 An exploded view of the male connector in the diagram.

[0017] Figure 3 It is along Figure 1 The cross-sectional view of line AA in the diagram.

[0018] Figure 4 yes Figure 3 Enlarged view of section B.

[0019] Figure 5 This is a cross-sectional view showing the main parts of a conventional male connector.

[0020] Reference tag list

[0021] 1 Male connector

[0022] 2 male terminals

[0023] 3. Aphrodisiac shell

[0024] 21 First protrusion (protrusion)

[0025] 22. Second protrusion (protrusion)

[0026] 31 Terminal holding section

[0027] 32-terminal insertion hole

[0028] 32a Guiding section

[0029] 32b Reception Section

[0030] 32c Pressing Section

[0031] 33. Cylinder section Detailed Implementation

[0032] Reference Figures 1 to 4 A "male connector" is described according to an embodiment of the present invention.

[0033] Figures 1 to 4 The male connector 1 shown mates with the female connector, which is a mating connector. The male connector 1 includes a plurality of male terminals 2 and a male housing 3. For the male connector 1, the male connector side in the mating direction relative to the female connector is called the "front side", and the opposite side is called the "rear side".

[0034] The male terminal 2 is obtained by plating tin or the like on the surface of a metal substrate. The male terminal 2 has: a rod-shaped portion 20 that extends straight along the entire length of the male terminal 2; and a pair of first protrusions 21 and a pair of second protrusions 22 that protrude from both ends of the rod-shaped portion 20 in the width direction within the middle portion 20c in the length direction of the rod-shaped portion 20.

[0035] The aforementioned "width direction of the rod-shaped portion 20 (also referred to as the width direction of the male terminal 2)" is a direction orthogonal to the length direction of the rod-shaped portion 20, and is also the direction in which the plurality of male terminals 2 are arranged in the male connector 1.

[0036] The rod-shaped portion 20 has a uniform cross-sectional area along its entire length (except for the tapered portions at one and the other ends). The aforementioned "cross-sectional area" refers to the area of ​​a section orthogonal to the length direction of the rod-shaped portion 20. One end 20a of the rod-shaped portion 20 in the length direction is located inside the male housing 3 for electrical connection with the female terminal of the female connector. The other end 20b of the rod-shaped portion 20 in the length direction is located outside the male housing 3 for electrical connection with the substrate, etc.

[0037] A pair of first protrusions 21 and a pair of second protrusions 22 are separated along the length of the rod-shaped portion 20. The pair of first protrusions 21 are located at one end 20b relative to the pair of second protrusions 22 in the middle portion 20c of the rod-shaped portion 20. The pair of second protrusions 22 are located at one end 20a relative to the pair of first protrusions 21 in the middle portion 20c of the rod-shaped portion 20. The protrusion length of the second protrusions 22 from the rod-shaped portion 20 is greater than the protrusion length of the first protrusions 21 from the rod-shaped portion 20.

[0038] The portion of the male terminal 2 with a pair of second protrusions 22 forming along its length has the largest cross-sectional area, while the portion with a pair of first protrusions 21 has the second largest cross-sectional area. The cross-sectional area of ​​the remaining portions is uniform (except for the tapered portions at one end and the other end). The aforementioned "cross-sectional area" refers to the cross-sectional area orthogonal to the length direction of the male terminal 2.

[0039] The male housing 3 is made of insulating synthetic resin. The male housing 3 integrally includes a cylindrical portion 33, a terminal holding portion 31, and a pair of fixing portions 35 that are fixed to a substrate or the like by bolts.

[0040] like Figure 1 and Figure 3 As shown, the cylindrical portion 33 is configured to surround one end 20a of the male terminal 2. The cylindrical portion 33 receives the female connector from its front opening.

[0041] The terminal holding portion 31 is used to hold a plurality of male terminals 2. The terminal holding portion 31 is formed as an opening at the rear side of the closed cylindrical portion 33. The terminal holding portion 31 includes a plurality of terminal insertion holes 32 through which the male terminals 2 are inserted. The plurality of terminal insertion holes 32 are arranged in a direction orthogonal to the connector mating direction. Each terminal insertion hole 32 opens on the front surface 31a and the rear surface 31b of the terminal holding portion 31. In other words, each terminal insertion hole 32 opens on both the front side (front side) and the opposite side (rear side) of the cylindrical portion 33.

[0042] Male terminal 2 along Figure 3 The terminal insertion hole 32 is inserted in the direction indicated by the middle arrow. In other words, the male terminal 2, with the other end 20b of the rod-shaped portion 20 as the front end, is inserted into the terminal insertion hole 32 from the front end surface 31a side of the terminal holding portion 31, and the other end 20b of the rod-shaped portion 20 protrudes from the rear end surface 31b side to the outside of the terminal insertion hole 32.

[0043] like Figure 4 As shown, each terminal insertion hole 32 is composed of a guide portion 32a, a receiving portion 32b, and a pressing portion 32c. The guide portion 32a, the receiving portion 32b, and the pressing portion 32c are arranged sequentially from the front end surface 31a side of the terminal holding portion 31 to the rear end surface 31b side.

[0044] The guide portion 32a is formed such that its cross-sectional area (the area of ​​a section orthogonal to the front-rear direction) gradually decreases from the front surface 31a side to the rear surface 31b side, that is, it gradually decreases from the cylindrical portion 33 side (front side) towards the receiving portion 32b side (rear side). When the male terminal 2 is inserted through the terminal insertion hole 32, the guide portion 32a guides the male terminal 2 located in the space inside the cylindrical portion 33 into the interior of the terminal insertion hole 32.

[0045] The receiving portion 32b is continuous with the guiding portion 32a and extends to the rear end surface 31b side. The receiving portion 32b is formed to have a uniform cross-sectional area (the area of ​​a section orthogonal to the front-rear direction) over its entire length in the front-rear direction. Figure 4 As shown, the portion of the male terminal 2 that is positioned in the receiving portion 32b but does not form a pair of first protrusions 21 and a pair of second protrusions 22 is only the rod-shaped portion 20. A gap is provided between the inner surface of the receiving portion 32b and the rod-shaped portion 20.

[0046] The press-fit portion 32c is continuous with the receiving portion 32b and extends to the rear end surface 31b. The press-fit portion 32c is formed to have a uniform cross-sectional area (the area of ​​a section orthogonal to the front-rear direction) over its entire length in the front-rear direction. This cross-sectional area of ​​the press-fit portion 32c is smaller than the cross-sectional area of ​​the receiving portion 32b. Figure 4 As shown, the portion of the press-fitting section 32c that presses the male terminal 2 has a pair of first protrusions 21 and a pair of second protrusions 22 formed. Therefore, the male terminal 2 is held by the terminal holding section 31.

[0047] When the terminal is inserted into the insertion hole 32, the male terminal 2 smoothly passes through the interior of the receiving portion 32b, and subsequently, a pair of first protrusions 21 and a pair of second protrusions 22 come into contact with the inner surface of the press-fit portion 32c and are scraped, thereby generating thread burrs. At this time, resin residue is generated on the male housing 3 side. If the length of the resin residue and thread burrs is within the range of the receiving portion 32b, the generated resin residue and thread burrs are retained in the receiving portion 32b, and therefore they do not extend beyond the front end surface 31a of the terminal holding portion 31. That is, they do not protrude outside the terminal insertion hole 32. If the length of the resin residue and thread burrs is not within the range of the receiving portion 32b, they will be detected and removed during product inspection. Therefore, short circuits caused by thread burrs can be prevented.

[0048] Regarding this male connector 1, it does not require the same features as traditional connectors (see...). Figure 5 In this way, a bending allowance 541 is formed between adjacent press-fit retaining wall portions 540 of the terminal insertion hole 537, thereby reducing the spacing between terminals.

[0049] Furthermore, in the male connector 1, the second protrusion 22, having a longer projection length, is located further to the receiving portion 32b than the first protrusion 21. Therefore, when the male connector 2 is inserted through the terminal insertion hole 32, the first protrusion 21 is first pressed into the pressing portion 32c, and the second protrusion 22 is pressed into place after the portion through which the first protrusion 21 has passed has been widened. Thus, compared to the case where the first protrusion 21 is not formed, the insertion of the male terminal 2 can be performed more smoothly.

[0050] Note that the above embodiments only illustrate typical aspects of the invention, and the invention is not limited to these embodiments. That is, various modifications can be made without departing from the scope of the invention. Of course, as long as these modifications still have the construction according to the invention, they will fall within the scope of the invention.

Claims

1. A male connector (1) comprising a male terminal (2) and a male housing (3), in, The male terminal (2) is formed with protrusions (21, 22) that protrude along the width direction of the male terminal (2). The male housing (3) includes a cylindrical portion (33) and a terminal holding portion (31). The cylindrical portion (33) is configured to receive a mating connector around one end (20a) of the male terminal (2) along its length. The terminal holding portion (31) is configured to hold the male terminal (2). The terminal holding portion (31) has openings on the side of the cylindrical portion (33) and the opposite side, and includes a terminal insertion hole (32) through which the male terminal (2) is inserted. The terminal insertion hole (32) includes a press-fit portion (32c) and a receiving portion (32b). The portion of the male terminal (2) with the protrusions (21, 22) is press-fitted to the press-fit portion (32c). The receiving portion (32b) is located on the cylindrical portion (33) side relative to the press-fit portion (32c). The cross-sectional area of ​​the receiving portion (32b) is larger than that of the press-fit portion (32c). A gap is provided between the inner surface of the receiving part (32b) and the male terminal (2).

2. The male connector (1) according to claim 1, wherein, The terminal insertion hole (32) includes a guide portion (32a) which is formed to be located on the side of the cylindrical portion (33) relative to the receiving portion (32b), and the cross-sectional area of ​​the guide portion (32a) gradually decreases from the cylindrical portion (33) side to the receiving portion (32b) side.

3. The male connector (1) according to claim 1, in, The male terminal (2) includes a first protrusion (21) and a second protrusion (22) as the protrusions (21, 22). The second protrusion (22) is located on the side of the receiving portion (32b) compared to the first protrusion (21), and The protruding length of the second protrusion (22) is greater than that of the first protrusion (21).

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