JP2019036459A - Method of manufacturing terminal-equipped exterior body and terminal-equipped exterior body - Google Patents

Abstract

To provide a method of manufacturing a terminal-equipped exterior body and a terminal-equipped exterior body which can improve the airtightness and reduce the whole volume.SOLUTION: A terminal-equipped exterior body has an exterior body having a through hole and a connection terminal member inserted in the through hole. The exterior body has a first insulating layer surrounding the through hole, a base portion surrounding the first insulating layer, and a reaction layer formed at the bonding interface between the first insulating layer and the base portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an exterior body with a terminal provided with a connection terminal for electrically connecting an electronic device in the exterior body and an electronic device and / or a battery outside the exterior body, and a method for manufacturing the exterior body with a terminal.

  An electric vehicle or a hybrid vehicle is equipped with electronic devices such as a motor and an inverter, and a battery (storage module) that supplies electric power to the motor. In order to electrically connect between these electronic devices or between the battery and the electronic device, each electronic device and the battery include a connector.

  In Patent Document 1, a connector provided in a motor case (hereinafter referred to as “first connector” for convenience) and a connector provided in an inverter case (hereinafter referred to as “second connector” for convenience). Is disclosed.

  Each of the first connector and the second connector includes a terminal fitting that is a connection terminal and a housing that houses the terminal fitting. The housing is made of an insulating synthetic resin and is a separate component from the motor case and the inverter case. The housing is externally attached to each of the motor case and the inverter case.

JP 2011-34935 A

  Exterior bodies such as an inverter case and a motor case are required to improve airtightness in order to protect electronic components housed therein from moisture and dust.

  However, the housings of the first connector and the second connector described in Patent Document 1 are configured as separate parts from the outer body (inverter case and motor case), and are externally attached to the respective outer bodies (cases). There may be a gap between the housing and the exterior body. Thereby, since the airtightness of an exterior body falls, it is not preferable.

  Furthermore, since the housings of the first connector and the second connector are configured as separate parts from the exterior body, the volume of the housing is required, and thus the entire volume increases accordingly.

  The present invention has been made to address the above-described problems. That is, one of the objects of the present invention is to improve the hermeticity of the exterior body and reduce the overall volume (hereinafter referred to as “the exterior body with terminal of the present invention”). And a manufacturing method of an exterior body with a terminal (hereinafter sometimes referred to as “a manufacturing method of an exterior body with a terminal of the present invention”).

In order to solve the above-mentioned problem, the exterior body with a terminal of the present invention has a through hole that communicates the outside and the inside, and the first insulating layer concentric with the through hole surrounding the through hole, the first An exterior body including a base material portion surrounding the insulating layer, and a through hole and a concentric reaction layer formed at a bonding interface between the first insulating layer and the base material portion;
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
With
The base material portion is composed of a first metal containing a first metal element,
The first insulating layer is made of an oxide glass containing a metal oxide having a second metal element,
The reaction layer is a reaction product between the first insulating layer and the base material portion.

In one aspect of the exterior body with a terminal of the present invention,
The reaction layer includes a metal oxide having the first metal element as the reactant.

In one aspect of the exterior body with a terminal of the present invention,
The first metal element is at least one of aluminum and magnesium,
The second metal element is silicon.

In one aspect of the exterior body with a terminal of the present invention,
A second insulating layer that surrounds the through-hole and is surrounded by the first insulating layer and is concentric with the through-hole joined to the inner peripheral side of the first insulating layer;
The second insulating layer is made of a ceramic material.

In one aspect of the exterior body with a terminal of the present invention,
The connection terminal member includes a screwing portion that is screwed with a screwed portion provided on a through hole forming surface of the through hole,
The screwed portion and the screwed portion are screwed together, and the connection terminal member is fixed to the exterior body.

The exterior body with a terminal of the present invention is
A through hole that communicates between the outside and the inside; an insulating layer concentric with the through hole surrounding the through hole; and a metal layer concentric with the through hole surrounding the insulating layer, The metal layer bonded to the outer peripheral side, the base portion surrounding the insulating layer and the metal layer, and the through-hole formed concentrically at the bonding interface between the metal layer and the base portion An exterior body including a diffusion layer;
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
With
The base material portion is composed of a first metal containing a first metal element,
The insulating layer is made of a ceramic material,
The metal layer is composed of a second metal containing a third metal element, and the diffusion layer is a layer in which the first metal element and the third metal element are solid-phase diffused.

The manufacturing method of the exterior body with a terminal of the present invention,
A first insulating layer having a through hole communicating with the outside and the concentric circle surrounding the through hole; a base portion surrounding the first insulating layer; and the first insulating layer and the An exterior body including the through hole and a concentric reaction layer formed at a bonding interface with the base material portion,
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
A method of manufacturing an exterior body with a terminal comprising:
Forming the reaction layer by casting a cylindrical insulating member made of an oxide glass containing a metal oxide having a second metal element with a molten metal of the first metal containing the first metal element; ,
Forming the through hole by penetrating the insulating member; and
Forming a threaded portion on the through hole forming surface of the insulating member;
The connection terminal member having a threaded portion that is threadedly engaged with the threaded portion is inserted into the through hole, and the threaded portion of the connection terminal member is threadedly engaged with the threaded portion, thereby connecting the connection. Inserting a terminal portion into the through hole;
Have

  According to the present invention, the airtightness of the exterior body can be improved and the entire volume can be reduced.

FIG. 1 is a schematic perspective view showing a configuration example of a case with terminals according to the first embodiment of the present invention. FIG. 2 is a schematic perspective view showing a configuration example of a cylindrical insulating member. FIG. 3A is a schematic cross-sectional view illustrating a configuration example of a case portion of the case with terminals according to the first embodiment of the present invention. FIG. 3B is a schematic cross-sectional view showing a configuration example of the case with terminals according to the first embodiment of the present invention. FIG. 4 is an enlarged schematic sectional view of a part of the terminal-equipped case according to the first embodiment of the present invention. FIG. 5 is a photograph showing a sample of an experimental example. FIG. 6 is an element distribution image obtained by XRF analysis of Sample 1. FIG. 7 is an X-ray diffraction profile obtained by microscopic XRD analysis of Sample 1. FIG. 8A is an X-ray diffraction profile obtained by micro part XRD analysis of Sample 1. FIG. FIG. 8B is an X-ray diffraction profile obtained by micro-part XRD analysis of Sample 1. FIG. 9A is a schematic perspective view showing a configuration example of an insulating member with a glass insulating layer. FIG. 9B is a schematic cross-sectional view showing a configuration example of a case with terminals according to the second embodiment of the present invention. FIG. 10A is a schematic perspective view illustrating a configuration example of an insulating member with a metal insulating layer. FIG. 10B is a schematic cross-sectional view illustrating a configuration example of a case with terminals according to the third embodiment of the present invention.

  Hereinafter, the exterior body with a terminal concerning each embodiment of the present invention is explained, referring to drawings. In all the drawings of the embodiment, the same or corresponding parts are denoted by the same reference numerals.

<First Embodiment>
Hereinafter, the exterior body with a terminal concerning a 1st embodiment of the present invention is explained.

<Configuration>
The exterior body with a terminal concerning a 1st embodiment of the present invention is a case with a terminal, for example. As shown in FIG. 1, the terminal-equipped case 11 according to the first embodiment includes a case portion 21 and three connection terminal members 22a penetrating through a part of the front portion 11a on the near side of the case portion 21. 22b and 22c. For example, the terminal-equipped case 11 can be suitably used as an inverter case in a state where an electronic device such as an inverter is accommodated therein and the open surface of the case portion 21 is covered by a lid member (not shown). In the following description, when the three connection terminal members 22a, 22b and 22c are not distinguished, they are simply referred to as the connection terminal member 22.

(Case part)
The case part 21 is a substantially rectangular parallelepiped housing having an open surface. In addition, the case part 21 is also called an exterior body for convenience. The case portion 21 is a casting formed by casting a columnar glass insulating member 23 obtained by molding a glass material, which will be described later, into a columnar shape shown in FIG. 2 with a molten metal of the first metal.

  As shown in FIG. 3A, the case portion 21 has three through holes 12a, 12b, and 12c that penetrate a part of the front surface portion 11a in the thickness direction. In the following description, when the three through holes 12a, 12b, and 12c are not distinguished, they are simply referred to as the through holes 12.

  Further, as shown in FIG. 3B, the case portion 21 includes a glass insulating layer 33 (glass insulating member 23) concentric with the through hole 12 surrounding the through hole 12, and a base material portion 34 surrounding the glass insulating layer 33. And a through-hole 12 formed between the glass insulating layer 33 and the base material portion 34 and a concentric reaction layer 35. The case portion 21 has a laminated structure in which a glass insulating layer 33, a reaction layer 35, and a base material portion 34 are laminated in this order from the center of the through-hole 12 toward the outer peripheral direction. The material part 34 is joined via a reaction layer 35.

(Glass insulation layer)
The glass insulating layer 33 is made of a glass material. As the glass material, oxide glass having a softening point equal to or higher than a molten metal temperature (for example, 600 ° C.) when the case portion 21 is cast is preferable. As the oxide glass, an oxide glass containing a metal oxide having a second metal element (including a metalloid element) can be used. The second metal element is, for example, Si or B.

The oxide glass typically includes an oxide glass containing at least SiO ₂ as a metal oxide having a second metal element. Examples of such oxide glass include quartz glass containing SiO ₂ (softening point 1683 ° C.), aluminosilicate glass containing SiO ₂ —Al ₂ O ₃ —B ₂ O ₃ (softening point 900 ° C.), BaO, and the like. -SiO ₂ containing glass (softening point 700 ° C.), SiO ₂ —MgO—Al ₂ O ₃ containing glass (softening point 750 ° C.), SiO ₂ —ZnO—BaO containing glass (softening point 740 ° C.), or The glass material which has these other softening points of 600 degreeC or more is mentioned.

  As shown in FIG. 4, the glass insulating layer 33 has a through hole forming surface on which the inner peripheral surface forms the through hole 12. On the surface of the glass insulating layer 33 where a through hole is formed, a thread groove 33a is formed which is a threaded portion that is threadedly engaged with a screw thread 43 that is a threaded portion provided in the connection terminal member 22.

(Base material part)
The base material part 34 is comprised with the 1st metal containing a 1st metal element at least. Examples of the first metal element include at least one selected from aluminum (Al) and magnesium (Mg). The first metal may contain a metal element (including a metalloid element) other than aluminum or magnesium. In this example, the first metal is an aluminum alloy (for example, an Al—Si—Mg based aluminum alloy).

(Reaction layer)
The reaction layer 35 includes a reaction product obtained by reacting the first metal constituting the base portion 34 with the metal oxide having the second metal element contained in the glass insulating member 23 (glass insulating layer 33). The reaction layer 35 is formed at the bonding interface between the glass insulating layer 33 and the base material portion 34. Since the reaction layer 35 fills the space between the glass insulating layer 33 and the base material part 34 without any gap, the airtightness of the terminal-equipped case 11 can be improved.

  The reaction layer 35 includes a metal element constituting the first metal of the base material portion 34, oxygen contained in the first metal element and the glass insulating layer 33 (oxygen derived from an oxide including a metal oxide having a second metal element). And at least a metal oxide having a first metal element produced by the reaction.

  1 type (s) or 2 or more types may be sufficient as the metal oxide which has the 1st metal element contained in the reaction layer 35. FIG. The reaction layer 35 includes a first metal element and a second metal element generated by a reaction between the first metal element and the second metal element (a second metal element derived from a metal oxide having the second metal element). The compound (intermetallic compound) which it has may be included. 1 type or more or 2 or more types may be sufficient as the intermetallic compound which has the 1st metal element contained in the reaction layer 35, and a 2nd metal element.

  It can be inferred from the following experimental example that the reaction layer 35 is made of such a material.

[Experimental example]
A disk-shaped sample 1 shown in the photograph of FIG. 5 was produced by casting a cylindrical glass insulating member made of quartz glass with an aluminum alloy (AC4C material). About this sample 1, XRF elemental analysis (X-ray Fluorescence Analysis) and micro part XRD measurement were performed. The micro part XRD measurement was performed on the reaction layer (reaction layer 35) and the aluminum alloy base material (base material part 34). FIG. 6 shows an element distribution image obtained by XRF elemental analysis measurement. 7A to 8 show X-ray diffraction profiles obtained by XRD measurement of the minute part of the reaction layer. 7 is a diagram in which the X-ray diffraction profile of FIG. 8A and the X-ray diffraction profile of FIG. 8B are superimposed. 8A is an X-ray diffraction profile of the reaction layer of Sample 1. FIG. FIG. 8B is an X-ray diffraction profile of the aluminum alloy substrate of Sample 1.

  As shown in FIG. 6, distribution of Al, Mg, and Fe derived from aluminum alloy and K and Ca derived from quartz glass were confirmed in the region R2 corresponding to the reaction layer. It is considered that Al and Mg derived from the aluminum alloy are uniformly distributed in the reaction layer. On the other hand, it was confirmed that K and Ca derived from quartz glass are unevenly distributed in the reaction layer and at the interface between the quartz glass (glass insulating layer) and the reaction layer (interface between the region R1 and the region R2). It was confirmed that Fe exists uniformly in the reaction layer and tends to be slightly unevenly distributed at the interface between the quartz glass and the reaction layer (interface between the region R1 and the region R3).

  In the region R3 corresponding to the aluminum alloy substrate, Al, Mg and Fe derived from the aluminum alloy were confirmed. Furthermore, it was confirmed that Fe was unevenly distributed in the aluminum alloy base material. In the region R1 corresponding to quartz glass (glass insulating layer), a uniform Si distribution was confirmed.

  As shown in FIG. 7, FIG. 8A and FIG. 8B, different X-ray diffraction profiles were observed at each measurement location of the reaction layer and the aluminum alloy substrate. Furthermore, in the reaction layer, it was confirmed that the component different from the aluminum alloy base material was produced | generated.

Crystalline peaks considered to correspond to the following were detected at each measurement location. In addition, the measurement result of XRF analysis was referred as element information. The data of Mg _0.17 Al _0.83 was cited as the MgAl alloy.

Reaction layer: MgAl alloy (Mg _0.17 Al _0.8 ), MgAl ₂ O ₄ , Mg ₂ Si, MgO
Aluminum substrate: MgAl alloy (Mg _0.17 Al _0.8 ), Mg ₂ Si
The Mg ₂ Si in the reaction layer is substantially considered to be Mg ₂ Si derived from an aluminum alloy, but Mg ₂ formed by reaction of Mg derived from an aluminum alloy and Si derived from quartz glass. There is a possibility that Si is also contained.

From the above analysis results, the reaction layer is MgO and MgAl ₂ O ₄ (that is, one or more metal oxides having the first metal element) in addition to the MgAl alloy and Mg ₂ Si contained in the aluminum alloy. Was included. As a result, Mg and Si contained in the aluminum alloy (AC4C material) react with oxygen (O) contained in quartz glass (oxide glass containing a metal oxide having a second metal element), whereby the first It was confirmed that MgAl ₂ O ₄ and MgO were generated as the metal oxide having a metal element.

(Connection terminal member)
Returning to FIG. 4, the connection terminal member 22 is a substantially rod-shaped conductive member for electrically connecting an electronic device (not shown) outside the case and an electronic device (not shown) inside the case. In this example, the electronic devices in the case are inverters and capacitors, and the electronic devices outside the case are motors (three-phase DC brushless motors).

  The connection terminal member 22 is inserted into the through hole 12. The connection terminal member 22 has a first terminal metal part 41a which is a perforated flat plate terminal having a hole at one end, and a second terminal metal part 41b which is a flat terminal at the other end. Furthermore, the connection terminal member 22 has a screwing portion 42 and a screw thread 43 at the center. The connecting terminal member 22 has a thread 43 that is screwed into a thread groove 33 a provided on the through hole forming surface of the glass insulating layer 33, thereby forming a portion of the connecting terminal member 22 that forms the thread 43. In addition, the connection terminal member 22 is fixed in a state of being inserted into the through hole 12 of the glass insulating layer 33 while being in close contact with the through hole forming surface of the glass insulating layer 33.

  Although illustration is omitted, the first terminal fitting part 41a at one end of the connection terminal member 22 is connected to a conductive member connected to the input terminal of the motor, and is electrically connected via the conductive member. . The second terminal metal part 41b at the other end of the connection terminal member 22 is, for example, an output of an inverter (not shown) accommodated in the case part 21 via a bus bar (connection conductive member) joined by laser welding. Electrically connected to the terminal.

<Manufacturing method>
(First manufacturing method)
Next, the manufacturing method of case 11 with a terminal concerning a 1st embodiment of the present invention is explained. The above-mentioned case 11 with a terminal can be manufactured by the following first manufacturing method. First, the three cylindrical glass insulating members 23 shown in FIG. 2 are prepared, and with the three glass insulating members 23 fixed at predetermined positions of the mold (not shown), the molten metal of the first metal is put on the mold. By pouring, the three glass insulating members 23 are cast with a molten metal of the first metal. Next, after forming the through holes 12a to 12c penetrating the cast glass insulating members 23, threading is performed. Thereafter, the connection terminal member 22 is inserted into the through hole 12 and screwed. As described above, the terminal-equipped case 11 can be manufactured.

(Second manufacturing method)
The above-mentioned case 11 with a terminal may be manufactured by the following second manufacturing method. A tubular glass insulating member (not shown) having a hollow is prepared instead of the cylindrical glass insulating member 23. A pin is inserted into the hollow of the tubular glass insulating member. Next, in the same manner as in the first manufacturing method, a tubular glass insulating member containing a pin is cast with a molten metal of the first metal. Then, after extracting the pin put in the hollow of the tubular glass insulating member, threading is performed. Thereafter, the connection terminal member 22 is inserted into the through hole 12 and screwed. As described above, the terminal-equipped case 11 can be manufactured.

(Third production method)
You may manufacture the above-mentioned case 11 with a terminal by the following 3rd manufacturing method. After a substantially rectangular parallelepiped housing whose one surface corresponding to the case portion 21 is opened in advance, the through hole 12 is formed in a part thereof by cutting. Next, after inserting the cylindrical glass insulating member 23 into the through hole 12, the interface between the glass insulating member 23 and the through hole forming surface of the housing is heated by irradiating with a laser (YAG laser) or the like. Thereby, the reaction layer 35 is formed. Next, after forming the through-holes 12a-12c which penetrate each glass insulation member 23, threading is performed. Thereafter, the connection terminal member 22 is inserted into the through hole 12 and screwed. As described above, the terminal-equipped case 11 can be manufactured.

  The terminal-equipped case 11 according to the first embodiment has the following effects. That is, the glass insulating layer 33 with high heat resistance can ensure the insulation between the base material portion 34 and the connection terminal member 22, and the reaction layer 35 between the base material portion 34 and the glass insulating layer 33, Since the base material part 34 and the glass insulating layer 33 are joined without a gap, the airtightness of the terminal-equipped case 11 can be improved.

  Furthermore, since the housing (connector housing) for ensuring the insulation between the base material portion 34 and the connection terminal member 22 becomes unnecessary, the volume of the housing can be reduced. Furthermore, screw fastening or the like for attaching the connector housing is not necessary, and the number of parts is reduced, so that the manufacturing process of the case with terminal 11 can be simplified.

  Furthermore, since the glass insulating layer 33 and the reaction layer 35 have high heat resistance, it is possible to prevent the glass insulating layer 33 and the reaction layer 35 from being deteriorated by the influence of heat. As a result, it can suppress that the airtightness of the case 11 with a terminal and the insulation between the base material part 34 and the connection terminal member 22 fall under the influence of heat.

Second Embodiment
A case with terminals (exterior body with terminals) according to a second embodiment of the present invention will be described. The terminal-equipped case according to the second embodiment is different from the terminal-equipped case 11 according to the first embodiment only in that a ceramic insulating layer 63a and a glass insulating layer 63b are provided instead of the glass insulating layer 33. Hereinafter, this difference will be mainly described.

<Configuration>
The case portion 21 of the terminal-equipped case 111 according to the second embodiment covers a surface of the ceramic insulating portion 53a and the cylindrical ceramic insulating portion 53a, which is shown in FIG. This is a casting formed by casting an insulating member 53 with a glass insulating layer provided with a glass insulating layer 53b formed in a molten metal of a first metal. The glass insulating layer 53b is formed of the same glass material as the glass insulating member 23 of the first embodiment.

  As shown in FIG. 9B, the case portion 21 has a concentric ceramic insulating layer 63a (ceramic insulating portion 53a) concentric with the through hole 12 surrounding the through hole 12, and a concentric circular shape with the through hole 12 surrounding the ceramic insulating layer 63a. Glass insulating layer 63b (glass insulating layer 53b), base material portion 34 surrounding ceramic insulating layer 63a and glass insulating layer 63b, and through-hole 12 formed between glass insulating layer 63b and base material portion 34. And a concentric reaction layer 35. The case portion 21 has a laminated structure in which a ceramic insulating layer 63a, a glass insulating layer 63b, a reaction layer 35, and a base material portion 34 are laminated in this order from the center of the through hole 12 toward the outer periphery. The insulating layer 63 b and the base material part 34 are joined via the reaction layer 35.

The ceramic insulating layer 63a (ceramic insulating portion 53a) is made of alumina (Al ₂ O ₃ ), magnesia (MgO), mullite (Al ₂ O ₃ ), or other ceramic materials.

  The glass insulating layer 63b is made of the same material as the glass insulating layer 33 of the first embodiment.

  The reaction layer 35 is an oxide containing a first metal constituting the base portion 34 and a metal oxide having a second metal element contained in the glass insulating layer 53b (glass insulating layer 63b) of the insulating member 53 with a glass insulating layer. It is comprised by the reaction material which physical glass reacted. The reaction layer 35 is formed at the bonding interface between the glass insulating layer 63 b and the base material portion 34. Since the reaction layer 35 fills the space between the glass insulating layer 33 and the base material part 34 without any gap, the airtightness of the terminal-equipped case 111 can be improved.

<Manufacturing method>
Next, the manufacturing method of the case with terminals according to the second embodiment of the present invention will be described. The above-mentioned case 111 with a terminal is the same manufacturing method as the first manufacturing method of the first embodiment except that a cylindrical insulating member 53 with a glass insulating layer is used instead of the cylindrical glass insulating member 23. Can be manufactured. That is, the above-mentioned case 111 with a terminal can be manufactured by the following process. First, the three insulating members 53 with glass insulating layers shown in FIG. 9B are prepared, and the first metal is attached to the mold in a state where the three insulating members 53 with glass insulating layers are fixed at predetermined positions of the mold (not shown). By pouring the molten metal, the three insulating members 53 with the glass insulating layer are cast with the molten metal of the first metal. Next, after forming the through holes 12a to 12c penetrating through the cast insulating members 53 with the glass insulating layer, threading is performed. Thereafter, the connection terminal member 22 is inserted into the through hole 12 and screwed. Thus, the terminal-equipped case 111 can be manufactured.

  The terminal-equipped case 111 may be manufactured as follows. That is, the above-described case 111 with a terminal is the same as the second manufacturing method of the first embodiment except that a tubular insulating member with a glass insulating layer (not shown) is used instead of the tubular glass insulating member. It can be manufactured by a manufacturing method.

  Further, the terminal-equipped case 111 may be manufactured as follows. That is, the case 111 with a terminal described above is the same as the third manufacturing method of the first embodiment except that a cylindrical insulating member 53 with a glass insulating layer is used instead of the cylindrical glass insulating member 23. It can be manufactured by a manufacturing method.

  The terminal-equipped case 111 according to the second embodiment has the same effects as those of the first embodiment. That is, the insulating property between the base material portion 34 and the connection terminal member 22 can be secured by the ceramic insulating layer 63a and the glass insulating layer 63b having high heat resistance, and between the base material portion 34 and the glass insulating layer 63b. Since the reaction layer 35 joins the base material portion 34 and the glass insulating layer 63b without a gap, the airtightness of the terminal-equipped case 111 can be improved.

  Furthermore, since the housing (connector housing) for ensuring the insulation between the base material portion 34 and the connection terminal member 22 becomes unnecessary, the volume of the housing can be reduced. In addition, screw fastening for attaching the connector housing or the like is not necessary, and the number of parts is reduced, so that the manufacturing process of the terminal-equipped case 111 can be simplified.

  Further, since the ceramic insulating layer 63a, the glass insulating layer 63b, and the reaction layer 35 have high heat resistance, it is possible to prevent the ceramic insulating layer 63a, the glass insulating layer 63b, and the reaction layer 35 from being deteriorated by the influence of heat. it can. As a result, it can suppress that the airtightness of the case 111 with a terminal and the insulation between the base material part 34 and the connection terminal member 22 fall under the influence of heat.

<Third Embodiment>
A case with terminals (exterior body with terminals) according to a third embodiment of the present invention will be described. The case 211 with a terminal according to the third embodiment is provided with a terminal according to the second embodiment only in that a diffusion layer 85 is provided in place of the reaction layer 35 between the base material portion 34 and the ceramic insulating layer 63a. It is different from the case. Hereinafter, this difference will be mainly described.

<Configuration>
The case part 21 of the terminal-equipped case 211 according to the third embodiment covers the surface of the ceramic insulating part 53a and the cylindrical ceramic insulating part 53a shown in FIG. This is a casting formed by casting an insulating member 73 with a metal layer provided with a metal layer 83 containing a second metal formed in this way with a molten metal of the first metal.

  As shown in FIG. 10B, the case portion 21 has a concentric ceramic insulating layer 63a (ceramic insulating portion 53a) concentric with the through hole 12 surrounding the through hole 12, and a concentric circular shape with the through hole 12 surrounding the ceramic insulating layer 63a. Metal layer 83, ceramic insulating layer 63 a and base material portion 34 surrounding metal layer 83, through-hole 12 formed between metal layer 83 and base material portion 34, and concentric diffusion layer 85. . The case portion 21 has a laminated structure in which a ceramic insulating layer 63a, a metal layer 83, a diffusion layer 85, and a base material portion 34 are laminated in this order from the center of the through hole 12 toward the outer peripheral direction. 83 and the base material part 34 are joined via the diffusion layer 85.

  The metal layer 83 is composed of a second metal containing at least a third metal element. Examples of the third metal element include one or more metal elements selected from Al, Cu, Mn, Mg, and Zn. The second metal may contain a metal element other than the third metal element.

  The diffusion layer 85 is formed by solid phase diffusion (interdiffusion) of the first metal element contained in the base material portion 34 and the third metal element contained in the metal layer 83 of the insulating member 73 with a metal layer. . The diffusion layer 85 is formed at the bonding interface between the metal layer 83 and the base material portion 34. Since the diffusion layer 85 fills the gap between the metal layer 83 and the base material portion 34 without any gap, the airtightness of the terminal-equipped case 211 can be improved.

<Manufacturing method>
Next, the manufacturing method of the terminal-equipped case according to the third embodiment of the present invention will be described. The above-mentioned case 211 with a terminal can be manufactured by the same manufacturing method as in the second embodiment except that the insulating member 73 with a metal layer is used instead of the insulating member 53 with a glass insulating layer.

  The terminal-equipped case 211 according to the third embodiment has the same effects as those of the first embodiment. That is, the insulating property between the base material portion 34 and the connection terminal member 22 can be ensured by the ceramic insulating layer 63a having a high heat resistance, and the diffusion layer 85 between the base material portion 34 and the metal layer 83 can be used as the base. Since the material part 34 and the metal layer 83 are joined without a gap, the airtightness of the terminal-equipped case 211 can be improved.

  Furthermore, since the housing (connector housing) for ensuring the insulation between the base material portion 34 and the connection terminal member 22 becomes unnecessary, the volume of the housing can be reduced. In addition, since screw fastening for attaching the connector housing is not necessary and the number of parts is reduced, the manufacturing process of the case 211 with terminals can be simplified.

  Furthermore, since the ceramic insulating layer 63a and the diffusion layer 85 have high heat resistance, it is possible to prevent the ceramic insulating layer 63a and the diffusion layer 85 from being deteriorated by the influence of heat. As a result, it can suppress that the airtightness of the case 211 with a terminal and the insulation between the base material part 34 and the connection terminal member 22 fall under the influence of heat.

<Modification>
Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments, and various modifications based on the technical idea of the present invention are possible.

  For example, the configurations, methods, steps, shapes, materials, numerical values, and the like given in each of the above-described embodiments are merely examples, and different configurations, methods, steps, shapes, materials, numerical values, etc. are used as necessary. May be.

  Furthermore, the configurations, methods, processes, shapes, materials, numerical values, and the like of the above-described embodiments can be combined with each other without departing from the gist of the present invention.

  For example, the terminal-equipped case according to the first to third embodiments has a configuration in which the connection terminal member is provided through the front surface portion of the housing having the open surface, but one or more surfaces other than the front surface portion. You may make it penetrate a connection terminal member. The housing may not have an open surface. The shape of the housing is not limited to a rectangular parallelepiped, and various shapes can be adopted. The exterior body with a terminal may be a part of a housing through which the connection terminal member is penetrated (for example, a flat plate member through which the connection terminal member is penetrated).

  DESCRIPTION OF SYMBOLS 11, 111, 211 ... Case with a terminal, 12a, 12b, 12c ... Through-hole, 21 ... Case part, 22a, 22b, 22c ... Connection terminal member, 23 ... Cylindrical insulation member, 33 ... Glass insulation layer, 34 ... group Material part, 35 ... reaction layer, 53 ... insulating member with glass insulating layer, 63a ... ceramic insulating layer, 63b ... glass insulating layer, 83 ... metal layer, 73 ... insulating member with metal layer, 85 ... diffusion layer

Claims (7)

A first insulating layer having a through hole communicating with the outside and the concentric circle surrounding the through hole; a base portion surrounding the first insulating layer; and the first insulating layer and the An exterior body including the through hole and a concentric reaction layer formed at a bonding interface with the base material portion,
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
With
The base material portion is composed of a first metal containing a first metal element,
The first insulating layer is made of an oxide glass containing a metal oxide having a second metal element,
The reaction layer is a package with terminal including a reaction product of the first metal and the oxide glass. In the exterior body with a terminal according to claim 1,
The reaction layer is an exterior body with a terminal including the metal oxide having the first metal element as the reactant. In the exterior body with a terminal according to claim 1 or 2,
The first metal element is at least one of aluminum and magnesium,
The exterior body with a terminal, wherein the second metal element is silicon. In the exterior body with a terminal according to any one of claims 1 to 3,
A second insulating layer that surrounds the through-hole and is surrounded by the first insulating layer and is concentric with the through-hole joined to the inner peripheral side of the first insulating layer;
The second insulating layer is an exterior body with a terminal made of a ceramic material. In the exterior body with a terminal according to any one of claims 1 to 4,
The connection terminal member includes a screwing portion that is screwed with a screwed portion provided on a through hole forming surface of the through hole,
An exterior body with a terminal in which the threaded portion and the threaded portion are threaded and the connection terminal member is fixed to the exterior body. A through hole that communicates between the outside and the inside; an insulating layer concentric with the through hole surrounding the through hole; and a metal layer concentric with the through hole surrounding the insulating layer, The metal layer bonded to the outer peripheral side, the base portion surrounding the insulating layer and the metal layer, and the through-hole formed concentrically at the bonding interface between the metal layer and the base portion An exterior body including a diffusion layer;
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
With
The base material portion is composed of a first metal containing a first metal element,
The insulating layer is made of a ceramic material,
The said metal layer is comprised with the 2nd metal containing a 3rd metal element, The said diffusion layer is an exterior body with a terminal which is a layer which the said 1st metal element and the said 3rd metal element diffused in the solid phase. A first insulating layer having a through hole communicating with the outside and the concentric circle surrounding the through hole; a base portion surrounding the first insulating layer; and the first insulating layer and the An exterior body including the through hole and a concentric reaction layer formed at a bonding interface with the base material portion,
A rod-shaped connection terminal member inserted into the through hole, wherein a first terminal portion formed at one end of the connection terminal member is in the exterior body and is formed at the other end of the connection terminal member. The connection terminal member having two terminal portions outside the exterior body; and
A method of manufacturing an exterior body with a terminal comprising:
Forming the reaction layer by casting a cylindrical insulating member made of an oxide glass containing a metal oxide having a second metal element with a molten metal of the first metal containing the first metal element; ,
Forming the through hole by penetrating the insulating member; and
Forming a threaded portion on the through hole forming surface of the insulating member;
The connection terminal member having a threaded portion that is threadedly engaged with the threaded portion is inserted into the through hole, and the threaded portion of the connection terminal member is threadedly engaged with the threaded portion, thereby connecting the connection. Inserting a terminal portion into the through hole;
The manufacturing method of the exterior body with a terminal which has these.