KR20120093089A - Molded vacuum valve and method of manufacture thereof and resin casting mold - Google Patents

Abstract

PURPOSE: A vacuum valve of a mold, a manufacturing method thereof and a resin injection mold are provided to improve electrical characteristic at least two times as metal caps are fixed by elastic members. CONSTITUTION: A vacuum valve of a mold comprises a vacuum insulating container(1), sealing fittings(2,3), metal caps(6,9), a conductive elastic member(7), and an insulating layer(11). The vacuum insulating container receives contact points. The sealing fittings are sealed at an opening. The metal caps cover a sealed section between the vacuum insulating container and the sealing fittings. The conductive elastic member is fixed between the sealing fittings and the metal caps. The insulating layer formed on an outer periphery of the vacuum insulating container, and encloses the metal caps.

Description

MOLDED VACUUM VALVE AND METHOD OF MANUFACTURE THEREOF AND RESIN CASTING MOLD}

Embodiment of this invention is a mold vacuum valve which consists of a vacuum valve which mold-molded a vacuum valve using thermosetting resins, such as an epoxy resin and an unsaturated polyester resin, its manufacturing method, and the outer periphery of a vacuum valve, The present invention relates to a resin mold mold for molding with the same insulating material.

Background Art Conventionally, it has been known to mold an outer circumference of a vacuum valve having a pair of freely foldable contacts with a thermosetting resin to reinforce external insulation. In the mold, since the sealing region (sometimes referred to as the sealing adhesion region or the sealing adhesion region) of the vacuum insulated container and the sealing bracket includes materials having different coefficients of thermal expansion such as ceramics and iron alloys, it is easy to cause stress concentration. The metal cap is provided so that this sealing area may be covered and stress relaxation is aimed at. For example, Japanese Patent Application Laid-Open No. 2001-338557 (hereinafter referred to as Patent Document 1) is disclosed.

In the above conventional mold vacuum valve, there are the following problems.

The thermosetting resin has a characteristic that its volume is reduced between deformations from heating to gel to harden through solidification by heating. For this reason, a method has been adopted in which a thermosetting resin filled in a cavity by having a temperature gradient in a resin mold die is sequentially cured from the portion farthest from the mold inlet toward the mold inlet. In this manner, the curing shrinkage is cured while being replenished sequentially from the mold inlet, whereby a cast product with less defects or internal stress can be obtained.

However, if the shape becomes complicated, the balance of the curing sequence may be broken, and internal stress may remain. In addition, at a position where a material having a different thermal expansion coefficient is used, such as a sealing region, the stress due to the difference in the thermal expansion coefficient of the material itself is added. In this region, stress relaxation is achieved by the metal cap. However, when a predetermined stress or more remains, cracks are advanced toward the outer circumferential direction of the metal cap. Therefore, it is desired that there is little possibility of internal stress remaining in the region where these different kinds of materials are used.

Moreover, from the vacuum valve which has a pair of freely foldable contacts, the fixed side current-passage shaft which becomes one current path, and the movable side which can move freely in the axial direction which becomes another converter path | route An energized shaft is drawn out. When molding this vacuum valve, it is known that a seal member is provided so that an epoxy resin does not intrude around the movable side conduction shaft. Similarly, this is disclosed by patent document 1 of Unexamined-Japanese-Patent No. 2001-338557.

This kind of resin mold metal mold is shown in FIG. 10, and the other metal mold (1) which is fixed to the closing device and the other metal mold which moves in the left-right direction in the illustration combined with the one metal mold 101a ( 101b). On one surface of the metal mold 101a and the other metal mold 101b, the symmetrical cavity 102a and the other cavity 102b are provided.

In the cavity 102a, 102b, the vacuum valve 103 is set, and the fixed side conduction shaft 104 is fixed to the substantially center part of the metal mold 101a, 101b of one side and the other in the upper part in the illustration. A bowl-shaped fixed side shield 106 is fixed to the fixed side energizing shaft 104 so as to surround the fixed side sealing bracket 105 of the vacuum valve 103.

On the movable side, a bowl-shaped movable side shield is formed so as to surround the movable side sealing bracket 107 (in other words, also referred to as the cap 107) and surround the movable side conduction shaft 108 in the cavities 102a and 102b. 109 is provided. An O-ring 110 is provided between the movable side sealing bracket 107 and the inside of the movable side shield 109.

A cap-shaped collar 111 (also referred to as a push-on fitting 111) is provided at an end of the movable side conduction shaft 108 to surround it. The circumferential portion abuts against an end of the movable side shield 109. The push-on bracket 111 is housed in the core 112 that forms part of the mold. The core 112 is provided with a stop screw 113, and the O-ring 110 can be compressed by pushing the bottom of the push-on bracket 111 upward in the illustration. In addition, the push-on bracket 111 positions the central axis of the movable side energizing shaft 108.

In this manner, by molding an epoxy resin in the cavities 102a and 102b and heating and curing, a mold vacuum valve can be manufactured in which an insulating layer is provided on the outer circumference of the vacuum valve 103. The O-ring 110 can prevent the intrusion of the epoxy resin into the movable side, and the movable side energizing shaft 108 can be freely moved in the axial direction.

Here, since there are some tolerances in the length of the axial direction of the vacuum valve 103, it was necessary to adjust the rotation operation of the fixing screw 113 in order to compress the O-ring 110 to predetermined pressure. For this reason, operation of the fixing screw 113 could not be quantified. When the O-ring 110 was not compressed at a predetermined pressure, an epoxy resin might intrude into the movable side conduction shaft 108 side. In addition, since the rotation of the fixing screw 113 can make the stop spring contact the bottom of the push-on bracket 111, this part is worn, making it difficult to quantify the compression of the O-ring 110.

According to the aspect of this invention, the mold vacuum valve which reduced internal stress and its manufacturing method are provided.

According to still another aspect of the present invention, an O-ring 110 serving as a seal member provided between the movable side sealing bracket 107 and the movable side shield 109 is provided with a tolerance or the like in the axial length of the vacuum valve 103. Even if this exists, the resin mold metal mold | die which can be compressed by predetermined pressure is provided.

In order to achieve the above, the mold vacuum valve according to the embodiment is configured as follows.

Specifically, the mold vacuum valve is provided so as to cover a vacuum insulated container for accommodating a pair of contacts, a sealing bracket sealingly attached to an opening of the vacuum insulated container, and an area for sealing between the vacuum insulated container and the sealing bracket. A metal cap, a conductive elastic member fixed in contact between the sealing bracket and the metal cap, and an insulating layer formed on the outer circumference of the vacuum insulated container surrounding the metal cap.

In order to achieve the above-mentioned, the resin mold metal mold | die which concerns on embodiment is one metal mold | die provided with one cavity, the other metal mold | die provided with the other cavity combined with the said one cavity, said one cavity, A vacuum valve set at the position of the other cavity, a resin intrusion preventing member surrounding the movable side sealing bracket of the vacuum valve and the movable side energizing shaft, a seal member provided between the resin intrusion preventing member and the movable side sealing bracket, And a moving device for moving the resin intrusion preventing member,

The moving device moves the resin intrusion preventing member in a direction compressing the seal member by closing the one mold and the other mold, and applies a spring force of a pressure spring to the resin infiltration preventing member. do.

1 is a cross-sectional view showing a configuration of a mold vacuum valve according to Embodiment 1 of the present invention.
2 is a cross-sectional view showing a method for manufacturing a mold vacuum valve according to Embodiment 1 of the present invention.
3 is a view for explaining the internal stress of the mold vacuum valve according to the first embodiment of the present invention.
4 is a cross-sectional view showing a configuration of a comparative example of a mold vacuum valve according to Example 1 of the present invention.
Fig. 5 is a cross-sectional view showing the manufacturing method of the mold vacuum valve according to the second embodiment of the present invention.
6 is a cross-sectional view showing the configuration of a resin mold in accordance with Example 1 of the present invention.
7 is a cross-sectional view illustrating the operation of the resin mold die according to the first embodiment of the present invention.
8 is a cross-sectional view showing a configuration of a resin mold in accordance with a second embodiment of the present invention.
9 is an enlarged cross-sectional view showing the configuration of a resin mold in accordance with a third embodiment of the present invention.
10 is a cross-sectional view showing the structure of a conventional resin mold.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the mold vacuum valve which concerns on Example 1 of this invention is demonstrated with reference to FIGS. 1 is a cross-sectional view showing the configuration of a mold vacuum valve according to a first embodiment of the present invention. 2 is a cross-sectional view illustrating a method of manufacturing a mold vacuum valve according to Embodiment 1 of the present invention. 3 is a view for explaining the internal stress of the mold vacuum valve according to the first embodiment of the present invention. 4 is a cross-sectional view showing the configuration of a comparative example of a mold vacuum valve according to Example 1 of the present invention.

As shown in Fig. 1, the plate-shaped fixed side sealing bracket 2 and the movable side are made of iron alloy in the openings at both ends of the cylindrical vacuum insulated container 1 made of ceramic which accommodates a pair of freely foldable contacts. The sealing bracket 3 is sealed by soldering. In the fixed side sealing bracket 2, the fixed side conduction shaft 4 which becomes one converter is penetrated and fixed. The movable side energizing shaft 5 serving as the other converter penetrates to the movable side sealing bracket 3 so as to be freely movable in the axial direction.

On the outer circumference of the fixed side sealing bracket 2, a bowl-shaped fixed side metal cap 6 is provided so as to cover a region in which the vacuum insulated container 1 is sealed. Between the fixed side sealing bracket 2 and the fixed side metal cap 6, an annular fixed side elastic member 7 made of a rubber material such as an electrically conductive O-ring or a packing is provided, for example. The fixed side elastic member 7 is compressed by the fixed bracket 8 at a predetermined pressure, and is fixed in contact between the fixed side sealing bracket 2 and the fixed side metal cap 6. On the outer circumference of the movable side sealing bracket 3, similarly to the fixed side, the bowl-shaped movable side metal cap 9 has a ring-shaped movable side elastic member 10 so as to cover the region where the vacuum insulated container 1 is sealed. ) Is installed. The movable side elastic member 10 is also compressed by the resin casting mold mentioned later, and is fixed by contact between the movable side sealing bracket 3 and the movable side metal cap 9.

Such as the vacuum insulating container 1, the fixed side sealing bracket 2, the fixed side energizing shaft 4, the fixed side metal cap 6, the movable side sealing bracket 3, the movable side metal cap 9, etc. On the outer circumference, an insulating layer 11 molded into a predetermined shape with an epoxy resin is provided. Specifically, the insulating layer 11 is provided on the outer circumference of the vacuum insulated container 1 surrounding the fixed side metal cap 6 and the movable side metal cap 9. In this way, insulation can be reinforced against creepage along the surface of the vacuum insulated container 1. Moreover, the edge of the fixed side energizing shaft 4 and the outer periphery of the movable side energizing shaft 5 are exposed.

Next, a manufacturing method is demonstrated with reference to FIG.

As shown in FIG. 2, before filling the epoxy resin in the resin mold metal mold | die 12, the fixed metal fitting 8 is screwed to the screw part 4a provided in the fixed side energizing shaft 4, and the fixed side metal The cap 6 is moved to the movable side, and the fixed side elastic member 7 is compressed and compressed to a predetermined pressure. Next, a cylindrical push-on bracket 13 having a bottom is placed on the outer circumference of the movable side energizing shaft 5, and the pressure screw jig 14 is attached to the resin mold 12 to the bolt 15. By fixing. Next, the end of the fixed side conduction shaft 4 is inserted into the recess in the upward direction in the illustration of the resin mold 12, and the push-on jig 14 is operated to move the push-on bracket 13 to the fixed side. In this way, the movable side elastic member 10 is pressed by the movable side metal cap 9 and compressed with a predetermined force. Then, the resin mold metal mold | die 12 is heated to predetermined temperature, an epoxy resin is filled, and it heat-hardens. The stationary side elastic member 7 and the movable side elastic member 10 have heat resistance which can withstand the temperature at the time of mold.

For example, the inflow of the epoxy resin to the movable side energizing shaft 5 side is prevented by the push-on bracket 13 and the movable side elastic member 10. Moreover, by fixing the fixed side elastic member 7 and the movable side elastic member 10, respectively, the fixed side metal cap 6 and the fixed side sealing bracket 2, and the movable side metal cap 9 and the movable side The sealing bracket 3 can be at the same potential, so that the electric field can be relaxed in each region where sealing adhesion is affected.

Next, the internal stress of the insulating layer 11 will be described with reference to FIGS. 3 and 4.

As shown in Fig. 3, in the embodiment in which the stationary side elastic member 7 and the movable side elastic member 10 are provided, as shown by the solid line, between the liquid and the curing point through the gel point until it solidifies. The increase in internal stress is hardly seen. This is because both ends of the vacuum insulated container 1 have a material having a different thermal expansion coefficient, and thus an internal stress tends to rise. However, the fixed side metal cap 6 and the movable side metal cap 9 move in accordance with the curing shrinkage of the epoxy resin. Therefore, internal stress can be alleviated.

In contrast, in the comparative example, as indicated by the dashed-dotted line, when the gelation point passes, the internal stress tends to rise rapidly. In the configuration of the comparative example, as shown in FIG. 4, the fixed-side metal cap 6 is fixed to the fixed-side energizing shaft 4 by bolts 16, and the movable-side metal cap 9 is movable-side sealing bracket. It is fixed by the bolt 17 to (3). For this reason, the internal stress issued at the time of hardening shrinkage | contraction by the fixed side metal cap 6 and the movable side metal cap 9 is restrained in the vicinity of a sealing attachment area.

Next, although the partial discharge characteristic of an Example and a comparative example is shown in Table 1, the stationary side elastic member 7 and the movable side elastic member 10 were replaced with the stationary side metal cap 6 and the movable side metal cap 9, respectively. In the case of fixing through the above, the electrical characteristics can be improved at least twice compared with the comparative example. In addition, since the internal stress is reduced, mechanical properties can also be improved.

Test result Partial discharge start voltage Partial discharge decay voltage Example 152 yen 136㎸ Comparative example 67㎸ 63㎸

In relaxation of internal stress, it is preferable that the movement range of the fixed side metal cap 6 and the movable side metal cap 9 is at least 0.5% with respect to the length of the axial direction of the vacuum insulated container 1. This is because the curing shrinkage is about 0.5% in the epoxy resin used for the mold vacuum valve. When packing is used for the fixed side elastic member 7 and the movable side elastic member 10, it is preferable to make thickness into 2%-5% of the length of the axial direction of the vacuum insulated container 1. In this manner, the deformation range of the packing can be made 10% to 20%, and stress relaxation can be achieved. Specifically, the stationary side elastic member 7 and the movable side elastic member 10 have a thickness (size) sufficient to absorb the curing shrinkage of the insulating layer 11. In the case of an O-ring, the diameter of the cross section is taken.

According to the mold vacuum valve of Example 1, since the metal caps 6 and 9 which cover the outer periphery of the seal | sticker attachment area | region are being fixed through the elastic members 7 and 10 which follow and contract with the cure shrinkage of an epoxy resin, The internal stress of the insulating layer 11 can be reduced, and excellent electrical and mechanical properties can be obtained.

[Example 2]

Next, the mold vacuum valve which concerns on Example 2 of this invention is demonstrated with reference to FIG. 5 is a cross-sectional view illustrating a method of manufacturing a mold vacuum valve according to Embodiment 2 of the present invention. This Example 2 differs from Example 1 in the material of an elastic member. In FIG. 5, the same code | symbol is attached | subjected in the same structural part as Example 1, and the detailed description is abbreviate | omitted.

As shown in FIG. 5, the fixed side metal cap 6 is being fixed through the fixed elastic member 18 which consists of metal spring materials. Moreover, similarly to the fixed side, the movable side metal cap 9 is being fixed through the movable side elastic member 19 which consists of a spring material. The spring material has a spring force (size) that can stretch and contract in response to curing shrinkage.

According to the mold vacuum valve of Example 2, since a spring material is used in addition to the effect similar to Example 1, it is easy to select a spring constant etc. and control of a stretch range becomes easy.

According to the embodiment as described above, since the metal cap provided in the outer periphery of the sealing attachment area | region of a vacuum valve is being fixed through an elastic member, stress relaxation and / or electric field relaxation inside an insulating layer can be aimed at.

[Example 3]

Next, the resin mold metal mold | die which concerns on Example 3 of this invention is demonstrated with reference to FIG. 6 and FIG. 6 is a cross-sectional view showing the configuration of a resin mold in accordance with a third embodiment of the present invention, and FIG. 7 is a cross-sectional view for explaining the operation of the resin mold in accordance with a third embodiment in the present invention.

As shown in FIG. 6, the resin mold metal mold | die is divided into two parts, one metal mold 101a and the other metal mold 101b by which the one metal mold 101a is combined. On one surface of the metal mold 101a and the other metal mold 101b, the symmetrical cavity 102a and the other cavity 102b are provided.

At the positions in the cavities 102a and 102b, the vacuum valve 103 is set, and the fixed side conduction shaft 104 is fixed to the substantially center portion of the molds 101a and 101b on the other side of the upper part in the illustration. The bowl-shaped fixed side shield 106 is fixed to the fixed side energizing shaft 104 so as to surround the fixed side sealing bracket 105 of the vacuum valve 103.

The movable side also surrounds the movable side sealing bracket 107 and simultaneously surrounds the movable side conduction shaft 108 in the cavities 102a and 102b (in other words, the movable side metal cap ( 109)). An O-ring 110 is provided between the movable side sealing bracket 107 and the inside of the movable side metal cap 109.

At the end of the movable side energizing shaft 108, a cap-shaped collar 111 (in other words, also referred to as a push-on bracket 111) that is freely movable in the axial direction is provided so as to surround it. 109 abuts the end. The push-on bracket 111 is housed in the core 112 that becomes part of the mold. The through hole 121 penetrates the core 112 by a push pin 120 movable in an axial direction that abuts the bottom of the push-on bracket 111 and pushes it to the upper side of the vacuum valve 103 in the illustration. Is installed.

The push pin 120 is connected to the core 112 and is accommodated in the tubular container 122 fitted in one of the metal molds 110a and 110b. The flange part 123 is provided in the middle part of the axial direction of the push pin 120, and the pull-out spring 124 which moves the push pin 120 to the downward direction in the figure at the push-on bracket 111 side is provided. It is installed. On the opposite side of the push-on bracket 111, a pressing spring 125 is provided which presses the push pin 120 in the upper direction in the city, that is, in the direction in which the O-ring 110 is compressed.

The slide core 126 which has a triangular cross section is provided in the edge part of the push pin 120 which opposes the push-on bracket 111, and the lower surface is shown as the 1st inclination part 127 in the figure. The other die 101b has a triangular locking block 128 that passes through the container 122 and pushes the slide core 126 toward the vacuum valve 103 in the upward direction in the drawing. Is fixed. In the locking block 128, a second inclined portion 129 is provided on a surface facing the first inclined portion 127, and the first inclined portion 127 is slid.

In addition, in FIG. 6, the o-ring which prevents the leakage of the epoxy resin provided between the butting surface of the metal mold | die 101a, 101b, for example, between the core 112 and the push-on bracket 111 is abbreviate | omitted.

Next, the state which opened the metal mold | die 101a, 101b is demonstrated with reference to FIG.

As shown in FIG. 7, when the other metal mold | die 101b is moved to the left direction by illustration by a closing device, the core 112 and the container 122 will be in the state which pinched | interposed into one metal mold 101a. The push pin 120 is retracted by the spring force of the pulled out spring 124 and falls off from the push-on bracket 111. This is a state in which the vacuum valve 103 is set in one mold 101a. In addition, although the insulating layer is not shown in figure, it is a state when it mold-releases after filling an epoxy resin in the cavity 102a, 102b, heat-hardening.

In order to close the molds 101a and 101b, when the other mold 101b is moved in the direction of one mold 101a in the right direction in the illustration, the inclined portions 127 and 129 are combined with each other to slide, As shown in FIG. 6, while the push pin 120 is pushed up, the pressing spring 125 is compressed, and a spring force is applied to compress the O-ring 110. The inclination parts 127 and 129 of each other change a movement direction, and convert the horizontal movement of the other metal mold 101b so that the push pin 120 may move vertically. The movable side metal cap 109 connected to the push pin 120 moves. These are called "moving devices" for moving the movable side metal cap 109 in the axial direction.

When the spring force of the pressure spring 125 is hundreds of kgs, even if there is a deviation (tolerance) of about 2 mm in the axial length of the vacuum valve 103, the O-ring 110 can be pressurized to a predetermined pressure. Invasion of the epoxy resin on the movable side can be prevented. In addition, manufacturing tolerances, assembly tolerances, etc. of the movable side metal cap 109 and the push-on bracket 111 are smaller than the tolerance of the vacuum valve 103, and can be absorbed by the pressure spring 125. FIG. In addition, since the O-ring 110 is finally compressed by the pressure spring 125, the compression becomes substantially constant, and the intrusion of the epoxy resin to the movable side can be reliably prevented.

According to the resin mold of the third embodiment, by closing the molds 110a and 101b, the push pins are compressed to compress the O-ring 110 provided between the movable side sealing bracket 107 and the movable side metal cap 109. Since the 120 is moved and the spring force of the compression spring 125 is applied, the O-ring 110 can be compressed to a substantially constant predetermined pressure even if there is a tolerance, for example, in the vacuum valve 103. Intrusion of the epoxy resin into the resin can be prevented reliably. At the time of release, the compression spring 125 is released from pressurization, and the push pin 120 is retracted from the push-on bracket 111 side by the pull-out spring 124, so that the core 112, the container 122, and the like are removed. There is no obstacle in the work of embedding.

In the said Example 3, although demonstrated using the O-ring 110 as an intervening component between the movable side sealing bracket 107 and the movable side metal cap 109, packing etc. may be sufficient and here, these members are sealed. It is called absence.

Example 4

Next, the resin mold metal mold | die which concerns on Example 4 of this invention is demonstrated with reference to FIG. 8 is a cross-sectional view showing the configuration of a resin mold in accordance with a fourth embodiment of the present invention. The difference between the fourth embodiment and the third embodiment lies in the presence or absence of a shield provided in the vacuum valve. In FIG. 8, the same code | symbol is attached | subjected in the structural part similar to Example 3, and the detailed description is abbreviate | omitted.

As shown in FIG. 8, the sealing brackets 105 and 107 of the vacuum valve 103 do not have the bowl-like shield similar to Example 3. As shown in FIG. However, the cylindrical resin intrusion prevention tube 130 is provided in the circumference | surroundings of the movable side energizing shaft 108 in the cavities 102a and 102b. An O-ring 110 may be provided between the resin intrusion prevention tube 130 and the movable side sealing bracket 107 to compress the O-ring 110 through the push-on bracket 111. When the applied voltage is low and an electric field can be allowed at the ends of the sealing brackets 105 and 107, there is no need to relax the electric field, and the shield surrounding the outer circumferential portion of the sealing brackets 105 and 107 is unnecessary.

The resin intrusion prevention tube 130 and the movable side metal cap 109 of the third embodiment have an action of preventing the epoxy resin from invading the movable side of the vacuum valve 103, and these are movable-side sealing brackets 107. And the resin penetration preventing member surrounding the movable side conduction shaft 8. In the case of the movable side sealing bracket 107, the radial surface is surrounded by the resin intrusion prevention tube 130.

According to the resin casting mold of the fourth embodiment, in addition to the effect obtained by the third embodiment, even when a shield is not provided, the intrusion of the epoxy resin into the movable side can be prevented by the resin intrusion prevention tube 130. .

[Example 5]

Next, the resin mold metal mold | die which concerns on Example 5 of this invention is demonstrated with reference to FIG. 9 is an enlarged cross-sectional view showing in detail the configuration of a resin mold in accordance with a fifth embodiment of the present invention. The difference between the fourth embodiment and the fourth embodiment is that a sliding member is provided on the locking block. In FIG. 9, the same code | symbol is attached | subjected in the structural part similar to Example 4, and the detailed description is abbreviate | omitted.

As shown in FIG. 9, the sliding part 131 which consists of materials, such as a fluororesin which has heat resistance and abrasion resistance, is provided in the 2nd inclination part 129 of the locking block 128. As shown in FIG.

According to the resin casting mold of the fifth embodiment, in addition to the effect according to the fourth embodiment, the inclined portions 127 and 129 easily slide, and the loss of movement of the push pin 120 can be reduced.

According to the embodiment described above, intrusion of resin to the movable side of the vacuum valve at the time of casting can be reliably prevented.

While various embodiments of the invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. These novel embodiments can be implemented in other various forms, and various omission, substitution, or a change can be performed in the range which does not deviate from the summary of invention. These embodiments and modifications thereof are included in the scope and spirit of the invention, and are included in the inventions described in the claims and their equivalents.

1 Vacuum insulated container 2 Fixed side sealing bracket
3 Movable side sealing bracket 4 Fixed side energizing shaft
4a Thread part 5 Live side energizing shaft
6 Fixed side metal cap 7, 18 Fixed side elastic member
8 Fixing bracket 9 Movable side metal cap
10, 19 movable side elastic member 11 insulating layer
12 resin mold mold 13 push-on bracket
14 pressure screw jig 15, 16, 17 bolt
101a, 101b mold 102a, 102b cavity
103 Vacuum valve 104 Fixed side conduction shaft
105 Fixed side sealing bracket 106 Fixed side shield
107 Movable side sealing bracket 108 Movable side energized shaft
109 Movable metal cap 110 O-ring
111 color (pushion bracket) 112 cores
113 Retaining Screw 120 Push Pin
121 Through Hole 122 Container
123 Flange 124 Pulling out spring
125 Pressure Spring 126 Slide Core
127, 129 Slope 128 Locking Block
130 Resin Intrusion Tube 131 Sliding Layer

Claims (12)

A vacuum insulated container for storing a pair of contacts,
Sealing fitting sealingly attached to the opening of the vacuum insulated container,
A metal cap installed to cover a sealing region between the vacuum insulated container and the sealing bracket,
A conductive elastic member fixed in contact between the sealing bracket and the metal cap, and
And an insulating layer formed on an outer circumference of the vacuum insulated container surrounding the metal cap. The method of claim 1,
And said elastic member is a rubber material. The method of claim 1,
And said elastic member is a spring material. The method according to any one of claims 1 to 3,
The elastic member is a mold vacuum valve having a size that absorbs the curing shrinkage of the insulating layer. A vacuum insulated container for storing a pair of contacts,
A sealing bracket sealingly attached to the opening of the vacuum insulated container,
A metal cap installed to cover a sealing area between the vacuum insulated container and the sealing bracket,
A conductive elastic member provided between the sealing bracket and the metal cap, and
A method of manufacturing a mold vacuum valve including an insulating layer formed on an outer circumference of the vacuum insulated container surrounding the metal cap,
And a method of manufacturing a mold vacuum valve to compress the elastic member to a predetermined pressure before forming the insulating layer. The method of claim 5, wherein
And the elastic member is compressed by pressing the metal cap by a pressure screw jig fixed to a resin mold in the movable side. One mold with one cavity,
Another mold having the other cavity installed in combination with the one cavity,
A vacuum valve set between the one cavity and the other cavity,
Rubber material surrounding the metal cap and the movable side current-passage shaft of the vacuum valve,
A seal member provided between the rubber material and the metal cap, and
A moving device for moving the rubber material,
The moving device moves the rubber material in a direction compressing the seal member by closing the one mold and the other mold, and applies a spring force of a pressure spring to the rubber material. The method of claim 7, wherein
The moving device has a push pin connected to the rubber material, and the push pin pulls out the retracting from the rubber material when the one mold and the other mold are released. out) Resin mold with spring installed. 9. The method according to claim 7 or 8,
And the rubber material is a movable side shield which achieves electric field relaxation of the metal cap. 9. The method according to claim 7 or 8,
The sealing member is an O-ring resin mold. 9. The method according to claim 7 or 8,
The mobile device,
A slide core having a first inclined portion secured to said push pin fitted into said one mold, and
And a locking block fixed to said another mold, said second mold having a second inclined portion sliding said first inclined portion. The method of claim 11,
The resin casting mold which provided the sliding layer which is easy to slide in the said 2nd inclination part.

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