JP3087239B2 - Manufacturing equipment for sealed thermo-responsive switches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a hermetically sealed thermoresponsive switch used for protecting a hermetic electric compressor or the like.

[0002]

2. Description of the Related Art In order to protect a motor of a hermetic electric compressor from a burnout accident, the motor is mounted on a stator winding or the like of the motor inside a hermetic casing of the compressor and directly detects an abnormal temperature or the like. The heat-responsive switch that gives the control signal to the electric circuit of the motor has a metal outer cylinder because of the requirement of strong and good heat transfer and heat resistance to be directly mounted on the motor structure such as the motor winding. The configuration in which the thermoresponsive switch main body is accommodated in the outer cylinder is suitable, and it is preferable that the thermoresponsive switch main body be quickly operated by the temperature of the outer cylinder.
The inside of the outer cylinder is usually filled with a gas containing all or part of its inert gas, which is set in advance to have appropriate heat conduction characteristics, and is made into a sealed structure, which is suitable for protection of this type of motor. I have.

According to the present invention, in the manufacture of a thermally responsive switch having such a set gas and having an airtight structure, the main body of the thermally responsive switch and the set gas are sealed in the metal outer cylinder, and It is an object of the present invention to provide a technical means in which a series of steps for sealing are sequentially and efficiently performed on one manufacturing apparatus.

[0004]

Describing the technical problems which aimed to solve At a present invention 0005] The heat-switch this
In a series of steps of sealing the body part together with the set gas in a metal outer cylinder, immediately before the sealing, the inside of the outer cylinder is once evacuated to a high vacuum for gas replacement in the outer cylinder. The time required is the process before and after that, that is, the switch is placed in the outer cylinder.
The difference in the slowness of some of the steps due to the need for a longer time than the time required for each of the step of inserting and combining the main body part and the step of replacing and filling the set gas after evacuation and the subsequent welding sealing step, The efficiency of the process was very low due to the limitation of the progress speed.

[0005]

That is, according to the present invention, a plurality of pot-shaped electrodes arranged at an equal angle on a single disc are reduced in the number of pot-shaped electrodes as the disc is intermittently rotated. At each corresponding rotation stop position, first insert the switch outer cylinder into the pot-shaped electrode, then insert the thermally responsive switch body into the switch outer cylinder, and then insert the upper electrode of the pot-shaped electrode. And closing of the urn lid and subsequent evacuation of the interior of the urn-shaped electrode, and continuing the second-stage evacuation at the next rotation position, if the degree of vacuum is still insufficient at the second stage, or If required by other design factors, cause the third stage of exhaust at the next pivoting position and, if necessary, the fourth stage of exhaust at the next position. At the next position, the setting gas is filled, and then the upper and lower electrodes of the pot-shaped electrode are instantaneously supplied with power to The switch sheath by welding as appropriate member of the switch body to seal the inside of the outer cylinder. In this airtight space
When welding the end plate of the switch body to the open end surface of the outer cylinder
Force is exerted by the upper welding electrode of the welding machine
The pair of upper and lower electrodes housed in the electrode sheath by the electrode sheath
The two parts of the thermoresponsive switch that slide while keeping airtight against
It has a structure that presses the material and contacts the lower welding electrode.
Have been. This series of steps is completed during one rotation of the disk, and the present invention employs a means for performing the exhaust step in a plurality of steps among the steps proceeding with the rotation of the disk. Despite the fact that the time required for evacuation to a degree of vacuum is longer than the time required for the preceding and following steps, the disk is always intermittently rotated at the same time interval, so that it is a continuous operation by one manufacturing apparatus. hand,
Moreover, the inefficiency of production resulting from the slow speed difference existing between the original steps is improved.

However, as described above and in the following embodiments, in the disclosure of the present invention, it is assumed that the above-described series of steps is completed once per rotation of the disk, but a plurality of times are performed per rotation of the disk. It is a matter of course that the present invention can be extended so that the series of steps is performed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the embodiment shown in FIGS. 1 to 3, pot-shaped electrode sheaths 1 are implanted on the upper surface of a disk 7 on one circumference and at equal intervals. Disk 7 is preferably made of a suitable electrical insulator. The pot-shaped electrode sheath 1 is composed of a lower electrode sheath 5 containing a lower electrode 3 therein and an upper electrode sheath 4 containing an upper electrode 2 therein.
The lower electrode sheath 5 is fixed on the disk 7 by an appropriate fixing means 7A, and the upper electrode sheath 4 is sealed above the lower electrode sheath 4 by a pivot 6A on the hinge bracket 6 supported on the disk 7 as shown in FIG. The space 9 is supported so as to be able to turn between two positions, that is, a state in which the space 9 is closed and a state in which the space 9 is opened as shown in FIG. When the hermetic space 9 is closed as shown in FIG. 1, it is isolated from the outside air by an O-ring 8. The O-ring 8 also serves to electrically insulate the upper and lower electrode sheaths 4, 5 from each other. The upper and lower electrodes 2 and 3 are both made of a copper alloy or the like. O-rings 2A, 3 to help
A is fitted on each circumference. The lower electrode 3 is urged upward by a spring 14 provided between the lower electrode 3 and the disk 7 and is at the position shown in FIG. 1 when no external force is applied to the lower electrode 3. force slides downwardly flexed spring 14 when acting, welder 13 which is a rotation of the disk 7 at the bottom of the disc 7 is installed in a fixed position regardless lower (see FIG. 7) Welding electrode 13B
The lower end surface thereof is pressed against. At the upper end of the lower electrode 3, a pocket 3B for accommodating the switch outer cylinder 22 is formed. A pair of air passages 3C communicating with the airtight space 9 at the upper end surface of the piston and communicating with the exhaust port 11 and the filling gas filling port 12 provided in the lower electrode sheath 5 are formed at substantially symmetric positions sandwiching the pocket 3B. Have been. A pocket 2B is formed on the lower end surface of the upper electrode 2 so that the switch end plate 24 can be pressed downward from above by the pressing surface on the ring when the upper electrode 2 slides downward.
A flange 4A is attached to the upper end of the upper electrode 2, and is urged upward by a spring 10 provided between the flange 4A and a support 4B projecting below the upper electrode sheath 4, thereby supporting the support 4B. Can be displaced in the vertical direction along the guide rod 4C implanted in the guide rod 4C, and its rising position is regulated by a stopper 4D provided at the upper end of the guide rod 4C.
In the restricting position, the lower end of the upper electrode 2 is opposed to the switch end plate 24 as shown in FIG. The upper end of the upper electrode 2 is opposed to the upper welding electrode 13A of the welding machine which is supported at a position corresponding to the welding electrode 13B on the lower side of the welding machine so as to be movable in the vertical direction as described later. I have.

Here, in order to help understand the operation of the present invention, an example of a thermally responsive switch 21 having a switch outer cylinder 22 and a switch end plate 24 applied to the present invention will be briefly described. FIG. 4A is an external view showing a sealed structure, and FIGS. 4B and 4C show a switch outer cylinder 22 and a switch main body 23 before sealing welding. As shown in FIG. 4 (C), a through hole is provided substantially at the center of the end plate 24 made of an iron plate or the like, and the conductive terminal 26 is made of an insulating material 25 such as glass.
Are air-tightly fixed. A fixed contact 27 is fixed to one end of the conductive terminal 26 via a fixed contact support 28. Further, a metal thermally responsive plate support 29 is fixed to the end plate 24, and the thermally responsive plate support 29 made of bimetal, trimetal or the like is connected to the thermally responsive plate support 29 via a conductive elastic member 30.
1 is fixed. The thermally responsive plate 31 is formed in a shallow dish shape in advance, and when the temperature becomes equal to or higher than a predetermined first temperature, it reverses with a snap action, and the bending direction is set to a direction opposite to the normal state, and is equal to or lower than the second temperature. Then, a return operation is performed with a snap action to return the bending direction to the initial state. A movable contact 32 is fixed to the tip of the thermally responsive plate 31 so as to be able to contact and separate from the fixed contact 27 described above.

The heat responsive plate support 29 is provided with a slit 29A, and a screw 33 for temperature calibration is attached to the slit 29A. The tip of the screw 33 presses a substantially central portion of the heat responsive plate 31 through a through hole provided near the center of the elastic member 30. This pressing force is screw 3
By turning 3 back and forth, the temperature can be adjusted, whereby the reversing first temperature of the thermoresponsive plate is calibrated to a predetermined temperature.

The switch body 2 thus assembled
Reference numeral 3 denotes a heat-responsive switch 21 having a completely airtight structure by replacing the internal gas and sealing the peripheral edge of the metal end plate 24 and the opening end surface of the switch outer cylinder 22 by welding.
Becomes

Returning to the description of the apparatus of the present invention, in the first embodiment shown in FIG. 2, six pot-shaped electrode sheaths 1 are arranged on a disk 7, and in this figure, exhaust is performed in two stages. An example is shown in FIG.
In the second embodiment shown in FIG. 6, eight pot-shaped electrode sheaths 1 are arranged, and this shows an example in which exhaust is performed in four stages. For convenience of explanation, the description of the device for exhausting the air in the second embodiment will be described. A valve disk 73 that integrally rotates with the rotation of the disk 7 is formed below the disk 7,
The valve disk 73 is slidably supported on a valve stator 74 while being in close contact with each other. A gas passage is connected between the disk 7 and the valve disk 73. An exhaust pipe 11A connected to the exhaust port 11 of the lower electrode sheath 5 is connected to an exhaust through hole 11B penetrating the disk 7, and further connected to an exhaust port 73A formed in the valve disk 73 via a connecting pipe 11C. The exhaust port 73A moves one after another as the valve disk 73 rotates, but the exhaust port 73A corresponding to the number of exhaust steps communicates with a vacuum port 74A formed in the valve stator 74 when the valve disk 73 stops. The mutual arrangement is determined. That is, the valve disk 73 and the valve stator 74 cooperate to constitute a kind of rotary valve that sequentially switches the communication of the exhaust port 73A to the vacuum port 74A,
At the position where each pot-shaped electrode sheath 1 is evacuated as the disk 7 rotates, the exhaust pipe 11A is connected to the always-vacuum port 74A.
Is to communicate with Each lower portion of the vacuum port 74A is connected to an exhaust unit. In this exhaust means, a vacuum pump for applying a predetermined degree of vacuum is connected at each position in principle, but in FIG. 6A, two vacuum ports 74A are connected to one vacuum pump 71, respectively. A technique for exhausting at 72 is shown. In this case, since the purpose is to increase the degree of vacuum at each position toward the right in the drawing as the disk 7 rotates, the suction pipes 71D and 72D of the vacuum pumps 71 and 72 are provided with the disk rotation. The front side branch pipe 71A,
Orifices 71C and 72C are provided between 72A and the rear branch pipes 71B and 72B to make the pressures during operation different. That is, in the second embodiment of this figure, the exhaust is performed in four stages, but a technique in which the exhaust is performed by two vacuum pumps 71 and 72 is shown.

The next is the charging of the set gas, but the rotary valve configuration of the gas supply means is basically similar to the configuration for the above-described exhaust process except for the difference in the gas flow direction between the exhaust and the charging. That is, as shown in FIG.
1A extended configuration downward substantially the same configuration from the gas filler opening 12 and the fill tube 12A and a flow path structure to the exhaust port 73A on the valve disc 73 from the fill port similarly arranged on the valve disc 73 73B. However, the filling port 73B on the rotary valve is provided with an exhaust port 73A for exhaust and a vacuum port 74A as shown in FIG.
Another concentric circle 7 having a different radius from the concentric circle 75 arranged
6, one air supply port 74 </ b> B is provided along the concentric circle 76 on the side of the valve stator 74, and communicates with the reservoir tank 78. The position where the air supply port 74B is provided is a position where the set gas is sent from the air supply port 74B at the next stop position to the electrode sheath that has been exhausted at the final stage as the valve disk 73 rotates, In the example of FIG. 2, the fifth position 45, FIG.
In the example, the seventh position 67 is the position of the welding sealing step.

The device of the present invention is configured as described above.
Then, as shown in FIG. 7, a welding machine 13 and the like are prepared and provided for operation.

The operation of the present invention will be described. First, the procedure will be described with reference to the embodiment diagrams of FIGS. 1 to 3. In this embodiment, the disk 7 on which six sets of pot-shaped electrode sheaths 1 are arranged is rotated around the center 77 as the center of rotation, and each time the process proceeds, the disk 7 becomes 1 Each electrode sheath 1 rotates in the order of / 6 rotation at the same time interval.
One enclosing / sealing operation proceeds, and one rotation of the disk 7 completes one enclosing / sealing operation. The start of the procedure is
The electrode sheath 1 at the first position 41 shown in FIG. 2 opens the upper electrode sheath 4 around the pivot 6A in the state of FIG. 3 to open the hermetic space 9, and is provided on the lower electrode 3 in this state. The outer cylinder 22 of the thermoresponsive switch 21 is inserted into the pocket 3B with the open end facing upward.

Next, the switch body 23 is inserted so that the peripheral edge of the end plate 24 abuts on the open end of the outer cylinder 22 at the second position 42, and then the upper electrode sheath 4 is returned to the state of FIG. The space in which the outer cylinder 22 and the switch body 23 are inserted is referred to as a closed airtight space 9. At this point, the upper electrode 2 is urged upward by the coil spring 10 via the flange 4A, and its lower end surface does not come into contact with the end plate.

Next, at the third position 43 and the fourth position 44, the air in the airtight space is communicated with the exhaust passage by the valve disk and the valve stator similar to those described in the configuration of the second embodiment. Is exhausted from the exhaust port 11. Here, first, the airtight space is evacuated to about 1/100 atm at the third position 43, and then evacuated at the fourth position 44 until a predetermined degree of vacuum is reached. Therefore, the space in the outer cylinder 22 is also evacuated to the same degree of vacuum at the same time.

Next, the exhausted electrode sheath 1 is placed at the fifth position 4
5 and the gas supply passage through the valve disk and the valve stator communicates with each other, so that a so-called inert gas such as nitrogen or helium is filled from the filling port 12 at a predetermined pressure. Therefore, the gas in the outer cylinder 22 is also replaced with the inert gas.

At this position, the upper welding electrode 13A movably supported by the upper arm 51 of the welding machine shown in FIG. . At this time, the upper electrode 2 moves downward while compressing the coil spring 10 via the flange 4 </ b> A of the upper electrode sheath 4 and contacts the end plate 24 of the switch body 23. Furthermore upper electrode 2 by applying pressure at the lower end of the lower electrode 3 moves from downward shown together with the lower electrode 3 against the spring 14 which holds the lower electrode 3 in contact with the welding electrode 13B of the lower side. When the pressure is further increased to a predetermined pressure, a predetermined welding current flows between the welding electrodes 13A and 13B,
The end face of the outer cylinder 22 is welded to the peripheral edge of the end plate 24 to form an airtight container.

Thereafter, after the application of the pressure from the welding electrode is released and the upper electrode 2 and the lower electrode 3 return to the positions shown in FIG. 1, the electrode sheath 1 moves to the sixth position 46 and again the upper electrode sheath 4 3 around the pivot 6A to open the hermetic space 9, take out the completed thermal responsive switch 21, and complete the sealing and sealing process of one thermal responsive switch.

As described above, in the present embodiment, each one of the outer cylinders is inserted on the disk 7 from the insertion of the outer cylinder at the first position 41 to the removal of the thermoresponsive switch 21 whose sealing and sealing is completed at the sixth position 46. The sealing and assembling process of the switch 21 proceeds continuously while the electrode sheath 1 makes one cycle, and it takes a longer time than before and after the process, especially for exhaust during the process. Instead, by proceeding with this exhaust in a plurality of steps, it is possible to proceed while keeping the rotation pitch of the disk 7 uniform, so that the efficiency of continuous operation is very good.

Here, to make sure, the means for turning the upper electrode sheath 4 in the above description is as follows.
In particular, although not related to the gist of the present invention, it has not been mentioned.
It is needless to say that it is desirable to automate the operation of opening and closing the upper electrode sheath 4, and it is naturally recommended to use appropriate automatic opening and closing means when using the apparatus of the present invention. An example will be described here for reference. In FIG. 8A, an inverted conical cam body 79 that is coaxial with the center 77 is supported above the disk 7 so as not to rotate. A pair of corrugated cam grooves 80 are provided over substantially half the circumference of the conical surface of the cam body 79. Referring to FIG. 2, the half circumference where the cam groove 80 is provided corresponds to the range from the fifth position 45 to the second position 42 in a counterclockwise direction, and at both ends, the cam groove 80 has an opening at the upper position. 80A is formed, and a portion corresponding to the sixth position 46 and the first position 41 at the center has a parallel portion 80B at a lower position.

On the side of the electrode sheath 1, a support 4 of the upper electrode sheath 4 is provided.
One end of a hinge plate 81 provided integrally with B extends beyond the pivot 6A toward the center of the disk, and a column 82 is planted at the tip thereof, and a cam ball 83 is pivotally supported at the upper end thereof. The pivot of the cam ball 83 is slightly inclined toward the cam body 79, and the opening 80A of the cam groove 80 is covered like an air chamber on the upper side and slightly hangs on the lower side so that the cam ball 83 can be easily received and opened. It has become.

In this example of such a mutual cam structure, when the electrode sheath at the fifth position 45 in FIG. 2 attempts to move to the sixth position 46 as the disk 7 rotates, the cam ball 83 opens the cam groove. The support plate 82 is fitted to the portion 80A, and is caught by the support member 80.
And the upper electrode sheath is tilted as shown in FIG. While the cam ball 83 is in the cam groove parallel portion 80B, the tilted open state is maintained. That is, the sealed product is taken out at the sixth position 46, and the switch outer cylinder 22 is inserted at the first position 41.

In the above description, the second position 4 is used for convenience.
2, the switch body 23 is inserted into the outer cylinder 22 and the upper electrode sheath 4 is closed. However, in combination with the cam configuration shown in FIG. The procedure is slightly changed so that the insertion of the outer cylinder 22 and the switch body 23 is continued. Or cam groove 80
The parallel portion 80B may be elongated to delay the opening of the cam ball 83 so that the cam ball 83 is closed while moving from the second position 42 to the third position 43.

The description of the insertion of the outer cylinder 22 and the switch body 23 and the removal of the product while the lid is open will be omitted for the sake of simplicity. It is sufficient to appropriately select from these and use them together.

Another embodiment in which the evacuation step is divided into a plurality of steps will be described with reference to FIGS. 5 and 6. If the evacuation step is divided into four stages as in this embodiment, the degree of vacuum can be further increased. Further, even when the processes before and after the exhaust are rationalized to improve the production efficiency, the exhaust process can be expected to operate smoothly without fear of hindering the overall efficiency. In this embodiment, eight sets of electrode sheaths 1 are mounted on the disk 7, and the disk 7 rotates by 1/8 turn to advance the process. Similarly, the process completes one turn. In this example, the switch outer cylinder 22 is inserted at the first position 61, the switch body 23 is inserted at the second position 62, and the upper electrode sheath 4 is covered.
The exhaust is advanced in four steps between the third and sixth positions 66. In this example, the third position 63 and the fourth position 64, and the fifth position 65 and the sixth position 66 as shown in FIG.
Share the vacuum pumps 71 and 72 for evacuation, respectively. Here, the electrode sheath 1 moved to the third position 63
The exhaust pipe 11A is connected to a front branch pipe 71A to a vacuum pump 71 via a rotary valve composed of a valve disk 73 and a valve stator 74. Here, the airtight space in the electrode sheath is evacuated to about 1/100 atm.

Next, the electrode sheath 1 is moved to the fourth position 64,
The exhaust pipe 11A is again connected to the downstream branch pipe 71B to the vacuum pump 71 via the rotary valve, and the airtight space in the electrode sheath is exhausted to about 1/250 atmosphere. Where 1
Three identical electrode sheaths are located at a third location 63 and a fourth location 64.
Is connected to the same one vacuum pump 71, but the electrode sheath is evacuated in the same way regardless of the position in the normal piping. For example, the electrode sheath once evacuated at the third position 63 When the gas moves to the fourth position, the gas in the newly connected next electrode sheath rapidly flows into the pipe and a part of the gas flows back into the previous electrode sheath. The degree of vacuum at the position will not change, and it will be necessary to evacuate again and the evacuation efficiency will deteriorate, so the capacity of the vacuum pump will not be fully exhibited and a higher capacity vacuum pump must be used to obtain a predetermined degree of vacuum. You will need it. Therefore, an orifice 71C is provided in the middle of the above-described pre-stage branch pipe 71A to reduce the exhaust efficiency at the third position 63. Therefore, the exhaust capacity at the fourth position can be substantially increased as compared with the third position, and the throttle prevents rapid inflow of gas into the pipe from the third position and backflow of the gas due to the rapid inflow. Therefore, the inside of the electrode sheath at the fourth position can be brought into a higher vacuum state. This relationship is the same for the front branch pipe 72A and the rear branch pipe 72B from the electrode sheath at the fifth position 65 and the sixth position 66, and the exhaust pipe 72A connected to the vacuum pump 72 from the fifth position. Is provided with an orifice 72C. The relationship here is the same as that described above, and detailed description is omitted, but the electrode sheath evacuated to about 1/250 atm in the fourth position by this configuration is 1/500 atm in the fifth position. And finally evacuated and reduced to a pressure of 1/1000 or less at the sixth position.

Thereafter, the electrode sheath is moved to the position corresponding to the welding electrode at the seventh position 67 in the same manner as in the above-mentioned example, and the hermetic space is filled with an inert gas or the like, and then the thermoresponsive switch is sealed by welding. The work is completed, and thereafter, it is moved to the eighth position 68, and the upper electrode sheath 4 is opened again around the pivot 6, and the completed thermoresponsive switch 21 is taken out.

In this embodiment, 2 is used at each exhaust position.
Although one vacuum pump is commonly used at three locations, the vacuum pump may be shared at three or more evacuation positions if, for example, the vacuum pump has sufficient capacity and an appropriate throttle is selected. Needless to say, each of the exhaust positions may be made to correspond one-to-one without sharing the vacuum pump.

[0030]

According to the present invention, a disc in which a pot-shaped upper lid portion is openable and closable and electrode sheaths in which upper and lower electrodes are slidably accommodated on the same circumference of the disc at equal intervals is provided. When each step of the sealing operation of the thermally responsive switch progresses sequentially during the uniform intermittent rotation of the step, the exhaust step in this step is divided into a plurality of steps, so that the conventional exhaust step can Resolves the problem that the longer time required than each would hinder the efficiency of the entire process, and achieves a smooth continuous operation and the required degree of vacuum without any restrictions on uniform intermittent rotation of the disk. You can do it.

When one vacuum pump is shared by a plurality of exhaust positions and an orifice is interposed in the exhaust passage on the upstream side of the plurality of exhausts, the vacuum pump can be used without impairing the exhaust efficiency. Efficiency can be increased.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an electrode sheath, which is a component of the present invention, showing one state during operation of the present invention.

FIG. 2 is a plan view in which the above-mentioned electrode sheath is disposed on a disk, which is another component of the device of the present invention.

FIG. 3 corresponds to FIG. 1 and shows another state of the operation of the device.

FIG. 4 is a perspective view before and after assembling of a thermally responsive switch hermetically assembled by the apparatus of the present invention.

FIG. 5 is a plan view corresponding to FIG. 2 and illustrating a second embodiment.

FIG. 6 is a partial side view showing that a gas passage is formed by combining other components used in the apparatus of the present invention with the above-mentioned disk, corresponding to the second embodiment;

FIG. 7 is a side view of an example showing a use state of the device of the present invention.

FIG. 8 is a partial side view for explaining the operation of an example of an auxiliary device to be added in a reference example for actually operating the device of the present invention.

[Description of Signs] 1: Electrode sheath 2: Upper electrode 3: Lower electrode 3B: Pocket 4: Upper electrode sheath 4A: Fixed portion 4B: Bearing 5: Lower electrode sheath 6: Hinge bracket 7: Disk 9: Airtight space 10 : Coil spring 11: Exhaust port 12: Filling port 13: Welding machine 13A, 13B: Welding electrode 21: Thermal response switch 22: Outer cylinder 23: Switch body 24: End plate 71, 72: Vacuum pump (exhaust means) 71A, 72A : Front branch pipe 71B, 72B: Rear branch pipe 71C, 72C: Orifice 73: Valve disk 73A:Exhaust port  73B:Filling port  74: valve stator 74A: vacuum port 74B: air supply port 75, 76: concentric circle 77: center of disk 78: reservoir tank 79: cam body 80: cam groove 83: cam ball

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 11/00 H01H 37/54

Claims (2)

(57) [Claims] (1)A switch with an opening / closing mechanism on a metal end plate
Closed thermo-responsive switch consisting of a switch body and a metal outer cylinder
A manufacturing apparatus for manufacturing a switch,  The upper lid can be opened and closed, and a pair of upper and lower electrodes can slide inside it
And a thermo-responsive switch between the upper and lower electrodes.BothDepartment
Replace the gas in the outer cylinder of the switch by holding the materialAnd welding
Sealing processAn electrode sheath that can be applied; and the electrode sheath is disposed at regular intervals along the circumference of the electrode sheath.
Make a full rotation with the number of intermittent rotations corresponding to the number of sheaths
The thermal response to the electrode sheath at each stop position every time the rotation stops
A disk for sequentially processing a switch, and a disk arranged under the disk so as to rotate integrally therewith.
Of the electrode sheathFor each exhaust portOne to communicate with each
On concentric circlesEquipped with exhaust port and for each filling portSo
Placed on concentric circles of different radii that communicate with each other
WasFilling portA valve disc comprising: a valve disc;
At least two sites adjacent to the site
Multiple ports that are simultaneously connected to the air port and connected to the exhaust means
Vacuum port and simultaneous communication of the vacuum port
At the next disk stop after the last stageFilling portTo
And an air supply port for supplying a predetermined gas thereto.
The valve statorPrepare, By closing the upper lid, a closed space is formed in the electrode sheath.
And In this airtight space, the switch body of the thermoresponsive switch
When welding the end plate to the open end surface of the outer cylinder to make an airtight container,
The pressing force is exerted by the upper welding electrode of the welding machine.
The pair of upper and lower electrodes housed in the electrode sheath correspond to the electrode sheath.
To keep both members of the thermoresponsive switch
It is a structure to press, The lower electrode is always urged upward by a spring.
When downward pressure is applied by the welding machine,
To make contact with the lower welding electrode of the welding machine
 Manufacturing equipment for closed-type thermoresponsive switches. 2. A vacuum port on the upstream side of the plurality of adjacent vacuum ports as viewed from the direction of rotation of the disk through an orifice, and a vacuum port on the downstream side is directly connected to the vacuum port on the downstream side so as to connect them. Both sides are evacuated in parallel by one exhaust means, so the front side
To prevent exhaust backflow due to sudden exhaust.
2. The apparatus for manufacturing a hermetically sealed thermoresponsive switch according to claim 1, wherein: