JPH0515335U - Airtight terminal - Google Patents

Abstract

(57) [Summary] [Object] To provide a highly reliable airtight terminal which can be used as an FP type and a DIP type. [Constitution] In a hermetic terminal in which a lead terminal insertion hole 2 is provided in a box-shaped body 1 forming an airtight space 5 inside, and a lead terminal 3 is inserted into the lead terminal insertion hole 2 and sealed with an insulating material 4, the box The shaped body has a shoulder portion 14 having at least a part projecting inside the box-shaped body and having a horizontal portion parallel to the bottom surface of the box-shaped body, and a void 15 formed outside the shoulder portion due to the shoulder portion projecting. In addition to the above, a lead terminal insertion hole is formed in the horizontal portion 141, and the lead terminal penetrating the airtight space and the gap is sealed. [Effect] A highly reliable airtight terminal that can be used as an FP type and a DIP type can be provided.

Description

[Detailed description of the device]

[0001]

[Technical field of invention]

 The present invention relates to an airtight terminal, and more particularly to an airtight terminal that can be used with high reliability as an FP type and a DIP type.

[0002]

[Prior art]

 As shown in FIG. 5, the airtight terminal is provided with a lead wire insertion hole 2 in a side wall 11 of a metal box-shaped body 1, a lead terminal 3 is inserted in the lead terminal insertion hole 2, and is sealed with an insulating material 4. It has a structure. The airtight terminal of this structure is called a horizontal type (FP type) because the lead terminal 3 is projected laterally. This type of airtight terminal may be a so-called surface mount type (SMD type), in which the lead terminal 3 is bent in a crank shape and is directly mounted on the surface of a circuit board or the like by soldering or the like.

The airtight terminal shown in FIG. 6 is a type in which a lead terminal insertion hole 2 is provided in a bottom surface 12 of a box-shaped body 1, a lead terminal 3 is inserted in the lead terminal insertion hole 2, and an insulating material 4 is sealed. Therefore, it is referred to as a vertical type (DIP type). In this case, the lead terminals 3 are fitted into the through holes formed on the circuit board and fixed with solder or the like.

In any of these types of airtight terminals, circuit components and the like are mounted in the airtight space 5 formed inside the box-shaped body 1, and the lead terminals 3 are electrically connected, After that, a lid made of metal (not shown) is covered, the upper end surface portion 13 of the box-shaped body 1 and the lid are adhered, and it is used for hermetically sealing the circuit components and the like.

[0005]

[Problems solved by the device]

 Among the airtight terminals described above, the FP type airtight terminal is suitable for the surface mount airtight terminal as described above. It is relatively difficult to form the lead wire insertion hole 2 in the box-shaped body 1, productivity is poor, and cost is increased. “Because the lead terminals protrude outside the box-shaped body 1, Occupied area on the circuit board (It has a drawback that it is unfavorable in promoting light, thin, short, small, and high-density mounting because the mounting area becomes large.

On the other hand, the DIP type hermetic terminal has a drawback that it is not suitable for surface mounting because it is mounted on the through-hole substrate by soldering.

The present invention has been made in view of the above points, and can be used as both the FP type and the DIP type. In particular, when used as the FP type, the lead terminals project to the outside of the box-shaped body. The purpose is to provide an airtight terminal whose mounting area is reduced.

[0008]

[Means for solving problems]

 In order to achieve the above object, the airtight terminal according to the present invention is provided with a lead terminal insertion hole in a box-shaped body that forms an airtight space inside, and the lead terminal is inserted into this lead terminal insertion hole and sealed with an insulating material. In the hermetic terminal, the box-shaped body is formed on the outside of the shoulder by a shoulder having at least a part protruding inside the box-shaped body and having a horizontal part parallel to the bottom surface of the box-shaped body. And a lead terminal insertion hole is formed in the horizontal portion, and the lead terminal penetrating the airtight space and the gap is sealed.

[0009]

【Example】

 FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view of the embodiment from the back side. As is apparent from this embodiment, the airtight terminal according to the present invention is a box-shaped body 1. It has a basic structure in which a lead terminal insertion hole 2 is provided, a lead terminal 3 is inserted into the lead terminal insertion hole 2 and sealed with an insulating material 4.

After mounting circuit components and the like in the airtight space 5 formed by the inner surface of the box-shaped body 1, the upper end surface portion 13 of the box-shaped body 1 is covered with a lid to hermetically seal the box-shaped body 1. There is.

According to the present invention, the box-shaped body 1 is formed with a shoulder portion 14 protruding inward, and a void 15 is formed on the back surface because the shoulder portion 14 is protruded. In this embodiment, it is formed over the entire length on the two sides of the opposite rectangular parallelepiped. The shoulder portion 14 has a horizontal portion 141 parallel to the bottom surface 12 of the box-shaped body 1 and a vertical portion 142 perpendicular to the bottom surface 12. The horizontal portion 141 has the lead terminal insertion hole 2 therein. Has been formed. The lead terminal insertion hole 2 has a structure in which an airtight space 5 and a lead terminal 3 penetrating the gap 15 are sealed with an insulating material 4.

Further, in this embodiment, the lead terminal 3 is bent in a hook shape, and the bent portion 31 is configured to extend outward of the airtight terminal, but not to protrude from the outer periphery of the airtight terminal. ing.

FIG. 3 is a rear perspective view of the second embodiment of the present invention. As is clear from this figure, the shoulder portion is provided only at the portion where the lead terminal 3 penetrates. The void 15 formed by the shoulder portion is also formed only in the portion where the lead terminal 3 is sealed. Also in this embodiment, the bent portion 31 of the lead terminal 3 is not projected from the outer periphery of the airtight terminal.

FIG. 4 is a sectional view of another embodiment of the present invention. In this airtight terminal, an insulating material is provided up to the void 15 together with the lead wire insertion hole 2 and the lead terminal 3 is sealed. ing.

It is obvious that in any of the above airtight terminals, unless the lead terminal 3 is bent, the airtight terminal becomes a DIP type airtight terminal.

[0016]

[Action]

 According to the airtight terminal of the present invention, the lead wire 3 is sealed to the horizontal portion 141 of the shoulder portion 14 of the box-shaped body 1 and the space 15 and the airtight space 5 are formed due to the shoulder portion protruding inward. It has a penetrating structure. Therefore, by making the lead terminal 3 linear, it becomes a DIP type hermetic terminal, and by bending the lead terminal 3 outwardly to form the bent portion 31, it becomes the FP type or the SDM type. There is an effect that it becomes possible.

Further, in the case of the FP type, by preventing the bent portion 31 from projecting to the outside of the airtight terminal, the mounting area can be made smaller than that of the conventional FP type airtight terminal.

[0018]

[Effect of the device]

 As described above, according to the present invention, the box-shaped body is provided with the shoulder portion at least partially protruding inward, and the lead terminal is sealed to the horizontal portion of the shoulder portion. The lead terminals will protrude. Therefore, when the lead terminal is not bent, it can be used as a DIP type, while when the lead terminal is bent into a hook shape, it can be a horizontal type or a surface mount type hermetic terminal. Further, when the surface mount type is adopted, a part or all of the bent portion of the lead terminal is accommodated in the space under the shoulder portion, so that there is an advantage that the mounting area becomes small.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a bottom perspective view of the embodiment.

FIG. 3 is a bottom perspective view of the second embodiment.

FIG. 4 is a sectional view of a third embodiment.

FIG. 5 is a perspective view of a conventional airtight terminal.

FIG. 6 is a perspective view of a conventional airtight terminal.

[Explanation of symbols]

 1 Box-shaped body 11 Side wall 12 Bottom surface 13 Upper end surface portion 14 Shoulder portion 141 Horizontal portion 142 Vertical portion 15 Void 2 Lead terminal insertion hole 3 Lead terminal 4 Insulation material

Claims (4)

[Scope of utility model registration request] 1. A hermetically sealed terminal in which a lead terminal insertion hole is provided in a box-shaped body that forms an airtight space inside, and the lead terminal is inserted into this lead terminal insertion hole and sealed with an insulating material. The horizontal portion has at least a shoulder portion having an inside portion of the box-like body and a horizontal portion parallel to the bottom surface of the box-like body, and a void formed outside the shoulder portion due to the protrusion of the shoulder portion. An airtight terminal characterized in that a lead terminal insertion hole is formed in the airtight space, and the lead terminal penetrating the airtight space and the space is sealed. 2. The airtight terminal according to claim 1, wherein the lead terminal is linear. 3. The airtight terminal according to claim 1, wherein the lead terminal has a bent portion bent in a hook shape. 4. The airtight terminal according to claim 3, wherein the bent portion does not protrude from the outer periphery of the airtight terminal.