JPH0452948Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" The invention is based on a method in which one leg of the terminal of the jack protrudes through the printed circuit board from the top side to the bottom side, and is immersed in a solder bath of an automatic soldering machine, etc. Therefore, when soldering and fixing, even if the housing body and housing sleeve of the jack are made of general-purpose and inexpensive materials, the housing body and housing sleeve can be prevented from being thermally deformed by the heat of the solder bath. This relates to jacks that can be prevented.

``Prior Art'' As shown in FIG. 3, a conventional jack includes a housing sleeve portion 3 integrally provided on the front side of the housing body portion 1, a back cover 5 provided on the open back side of the housing body portion 1, The legs 7a, 7a of the terminal pieces 7, 7 protruding from the bottom surface of the housing main body 1 are made to protrude through terminal holes (not shown) of the printed circuit board 9, and are immersed in a solder bath 11 of an automatic soldering device, etc. The legs 7a, 7a of the terminal pieces 7, 7 are fixed to predetermined pattern portions of the printed circuit board 9 by soldering. At this time, in order to prevent the housing body part 1 and the housing sleeve part 3 from being thermally deformed due to the heat transmitted from the solder bath 11 in the direction shown by the arrow, the housing body part 1 and the housing sleeve part 3 are made of a highly heat-resistant material. It was made of a material (for example, a highly heat-resistant plastic material).

"Problems to be Solved by the Invention" However, in the conventional example shown in FIG. Since the housing body part 1 and the housing sleeve part 3 must be made of a highly heat-resistant material (for example, a highly heat-resistant plastic material), the materials for forming the housing body part 1 and the housing sleeve part 3 are limited. There was a problem in that general-purpose, inexpensive materials (for example, plastic materials with low heat resistance) could not be used.

This idea was created in view of the problems mentioned above.
Even if the housing body and housing sleeve are made of a general-purpose, inexpensive material (for example, a plastic material with low heat resistance), it is difficult to prevent the housing body and the housing sleeve from being thermally deformed by the heat of the solder bath during soldering. The purpose is to provide a jack that can be prevented.

"Means for Solving Problems" The present invention provides a housing sleeve integrally on the front side of the housing body, and connects the legs of the terminal pieces protruding from the bottom of the housing body from the top side of the printed circuit board. In the jack, which is protruded through the lower surface side and fixed by soldering by being immersed in a solder bath, a first heat shielding plate is provided between the bottom surface of the housing main body and the top surface of the printed circuit board; The present invention is characterized in that a first heat shield plate is integrally provided on the front side of the first heat shield plate through a hinge portion to isolate between the housing sleeve portion and the solder bath. Furthermore, in order to reduce the number of parts and facilitate assembly, a back cover is integrally provided on the back side of the first heat shielding plate to cover the opening back side of the housing main body. It is.

``Function'' One terminal leg of the jack is made to protrude through the printed circuit board from the upper surface side to the lower surface side, and is soldered and fixed to a predetermined pattern part of the printed circuit board by immersing it in a solder bath of an automatic soldering device or the like. During this soldering, the first heat shielding plate provided between the bottom surface of the housing body and the top surface of the printed circuit board blocks heat transmitted from the solder bath to the housing body through the printed circuit board. Further, the second heat shielding plate that blocks the connection between the housing sleeve portion and the solder tank blocks heat transmitted from the solder tank to the housing sleeve portion. Furthermore, the first and second heat shielding plates, which are integrally provided through the hinge part, are treated as one component, and the second heat shielding plate, which is no longer needed after soldering, is cut and removed at the hinge part. be done.
In addition, when a back cover that covers the opening back of the housing body is integrally provided on the back side of the first heat shield plate,
The first and second heat shield plates and the back cover are treated as one component, and by attaching the back cover to the opening back of the housing body, the first and second heat shield plates are also attached to the housing body. Become.

Embodiment FIG. 1 shows an embodiment of the present invention. In this figure, the same parts as in FIG. 3 (including the case where the constituent materials are different) are given the same reference numerals. In FIG. 1, reference numeral 1 denotes a housing main body made of a material with low heat resistance (for example, a general-purpose inexpensive plastic material). A housing sleeve portion 3 is integrally provided on the front side of the housing body portion 1. A printed circuit board 9 is provided at the lower part of the housing body 1, and a material having high heat resistance (for example, an expensive plastic with high heat resistance) is disposed between the upper surface of the printed circuit board 9 and the lower surface of the housing body 1. A first heat shielding plate 21 is provided, which is made of a material (although the present invention is not limited thereto). A second heat shielding plate 21 is provided at the lower part of the front side of the first heat shielding plate 21 via a hinge part 23 to shield between the housing sleeve part 3 and the solder bath 11.
A heat shielding plate 25 is integrally provided. A back cover 27 is integrally provided at the upper part of the back side of the first heat shielding plate 21 to cover the back side of the opening of the housing main body 1 . The engaging element 29 of the back cover 27 engages with an engaging hole 30 formed on the back side of the housing main body 1. Terminal pieces 7, 7 are locked in the housing main body 1, and these terminal pieces 7, 7
The leg portions 7a, 7a protrude from the bottom surface of the housing main body 1, pass through the first heat shield plate 21 and the through holes of the printed circuit board 9, and protrude to the outside.

The printed circuit board 9 with the jack attached as described above is led to the solder bath 11 by a conveyance device (not shown) or the like, and the legs 7a, 7a of the terminal pieces 7, 7 are immersed in the solder bath 11. It is soldered and fixed to a predetermined pattern portion of the printed circuit board 9 (for example, using an automatic soldering device). During this soldering, the first heat shielding plate 21 provided between the bottom surface of the housing main body 1 and the top surface of the printed circuit board 9 moves from the solder tank 11 toward the housing main body 1 via the printed circuit board 9. Shields heat transmitted in the direction indicated by the middle arrow. In addition, the housing sleeve part 3 and the solder tank 11
The second heat shielding plate 25 that blocks the connection between the solder tank 1 and
1 to the housing sleeve portion 3 in the direction shown by the arrow in the figure. Also, the second heat shielding plate 25, which is no longer needed after soldering is finished,
is cut and removed at the hinge portion 23. Furthermore, since the first and second heat shield plates 21 and 25 and the back cover 27 are provided integrally, they can be handled as one component, and the engagement element 29 of the back cover 27 can be attached to the housing main body.
It can be attached to the housing main body 1 by simply engaging with the engagement hole 30 formed on the back side of the housing.

In the above embodiment, the second heat shield plate is integrally provided at the lower part of the front side of the first heat shield plate via a hinge part, but the present invention is not limited to this.
The second heat shielding plate may be integrally provided on the front side of the first heat shielding plate via a hinge portion and shielding between the housing sleeve portion and the solder bath. For example, as shown in FIG. 2, the second heat shielding plate 25a may be integrally provided on the upper part of the front side of the first heat shielding plate 21 via a hinge part a.

In the embodiment described above, a back cover that covers the opening back of the housing main body is integrally provided on the back side of the first heat shielding plate to reduce the number of parts and facilitate assembly.
The present invention is not limited to this, and the first heat shielding plate and the back cover may be formed separately.

"Effects of the Invention" As described above, the jack according to the invention includes a first heat shield plate between the bottom surface of the housing body and the top surface of the printed circuit board, and a first heat shield plate between the housing sleeve section and the solder bath. Providing a second heat shield plate,
During soldering, the heat transmitted from the solder bath to the housing body via the printed circuit board and the heat transmitted from the solder bath to the housing sleeve are blocked, so the housing body and housing sleeve can be made of general-purpose, inexpensive materials. Even if they are made of a plastic material with low heat resistance, for example, the housing body and the housing sleeve can be prevented from being thermally deformed by the heat of the solder bath. Therefore, unlike the conventional example, the material forming the housing body and the housing sleeve is not limited to a specific material with high heat resistance (for example, a plastic material with high heat resistance), but the housing body and the housing sleeve can be made into a general-purpose material. It can be made of inexpensive materials (for example, plastic materials with low heat resistance). Furthermore, since the second heat shield plate is integrally provided with the first heat shield plate via the hinge portion, the number of required parts is reduced and assembly is facilitated.
Moreover, after the soldering is finished, the second heat shielding plate that is no longer needed can be removed by cutting it at the hinge portion. Furthermore, if a back cover is integrally provided on the back side of the first heat shielding plate to cover the back side of the opening of the housing body, the number of required parts can be further reduced, making assembly even easier. can.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of a jack according to the present invention, FIG. 2 is a cross-sectional view of main parts of another embodiment, and FIG. 3 is a cross-sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Housing body part, 3... Housing sleeve part, 7... Terminal piece, 7a... Leg part of terminal piece 7, 9... Printed circuit board, 11... Solder tank, 21
...first heat shielding plate, 23, 23a...hinge part,
25, 25a...first heat shielding plate, 27...back cover.

Claims (1)

[Claims for Utility Model Registration] (1) A housing sleeve is integrally provided on the front side of the housing body, and the legs of the terminal pieces protruding from the bottom of the housing body are connected from the top side of the printed circuit board to the bottom side. In the jack, which is protruded through and fixed by soldering by being dipped in a solder bath, a first heat shielding plate is provided between the bottom surface of the housing body and the top surface of the printed circuit board, and the first heat shielding plate is provided between the bottom surface of the housing body and the top surface of the printed circuit board. A jack characterized in that a second heat shielding plate is integrally provided on the front side of the shielding plate via a hinge portion to shield between the housing sleeve portion and the solder bath. (2) A housing sleeve is integrally provided on the front side of the housing body, and the legs of the terminal pieces protruding from the bottom of the housing body are penetrated and protruded from the top side of the printed circuit board to the bottom side, and immersed in a solder bath. In the jack, a first heat shield plate is provided between the bottom surface of the housing body and the top surface of the printed circuit board, and a hinge portion is provided on the front side of the first heat shield plate. A second heat shielding plate is integrally provided to shield between the housing sleeve portion and the solder bath via a second heat shielding plate, and a back cover covering the opening rear side of the housing main body portion is provided on the back side of the first heat shielding plate. A jack characterized by being installed in one piece.