JPH0124385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a vibratory compressor, particularly a cylindrical casing with both ends closed, which includes a permanent magnet and a pole piece that forms an annular gap between the permanent magnet and the permanent magnet. A drive coil fixedly provided and energized by alternating power is disposed in the gap so as to be movable in the axial direction of the casing, and a piston substantially integrated with the drive coil is provided integrally with the casing. The present invention relates to a vibratory compressor that is slidably and loosely fitted into a cylinder portion of the casing, and has a through hole formed at an end of the casing for supplying alternating power to the drive coil.

In the above-mentioned type of vibratory compressor, the terminal rod electrically connected to the drive coil is housed and covered in its entirety within the casing to prevent it from coming into contact with other objects outside the casing. It is desirable to avoid such problems.

Therefore, the present invention avoids the above-mentioned short-circuit failure by housing and fixing the terminal bar inside the casing, and also enables the terminal bar to be accurately positioned and fixed inside the casing, so that it can be inserted into the through hole from the outside. The terminal bar can always be accurately connected to the socket connection terminal to be inserted, and the holding frame of the terminal bar can be projection welded to the inner circumferential surface of the through hole, so that the through hole can be easily connected. An object of the present invention is to provide a vibratory compressor that can airtightly close holes.

In order to achieve the above object, the present invention provides a vibratory compressor of the type described above, in which a stepped portion having a circular bent edge is formed in the middle of the through hole, and the bent edge is provided with a stepped portion along the entire circumference thereof. A sealed terminal is provided between the cylindrical part and the inner surface of the through hole, the terminal bar being held by a holding frame having a conical part and a cylindrical part, which are in contact with each other by projection welding, and holding a terminal bar through a non-conductive material. The terminal bar is inserted into the through hole via a cylindrical electrical insulator, the inner end of the terminal bar is connected to a drive coil, and the outer end of the terminal bar is connected to an AC power source and is inserted into the through hole from the outside. It is characterized by being fitted into the terminal portion of the socket connection terminal to be locked.

Hereinafter, one embodiment of the invention will be explained with reference to the drawings. First, in FIG. A pair of pistons 2, 3 are arranged symmetrically with respect to the
3 reciprocate in opposite directions by supplying alternating power to the corresponding drive coils 4 and 5,
A fluid such as a refrigerant is sucked in and discharged.

The casing 1 is constructed by fitting and fixing a pair of closing members 7 and 8 to both ends of a cylindrical body 6. Both of the closing members 7 and 8 are basically cylindrical and integrally provided with flanges 9 and 10 extending radially outward at each end, and these flanges 9 and 10 form a cylindrical body. 6
is fitted and fixed to both ends of the That is, thin-walled portions 11 and 12 are provided at both ends of the cylindrical body 6, and the flanges 9 and 10 of the respective closing members 7 and 8 are fitted into these thin-walled portions 11 and 12, respectively, so that the thin-walled portions 11 , 12 are caulked and bent as shown in the figure to construct the casing 1. In addition, by welding the caulked portions as described above, the fixation between the closing members 7 and 8 and the cylindrical body 6 is further ensured.

In this way, since the casing 1 is constructed by fitting and fixing the closing members 7 and 8 of the same shape to both ends of the cylindrical body 6, the structure of the casing 1 is extremely simplified and the assembly efficiency is improved.

In the central part in the axial direction inside the casing 1,
A partition member 13 basically shaped like a thick disk is fixed to the inner surface of the cylindrical body 6, thereby partitioning the inside of the casing 1 into a pair of low pressure chambers 14 and 15.

In both low pressure chambers 14 and 15, permanent magnets 16 and 17 are fixed in a ring shape on the inner surface of the cylindrical body 6 near both ends thereof, respectively. Also, both closing members 7, 8
There is an annular gap 1 between the permanent magnets 16 and 17.
8, 19 to form a ring-shaped pole piece 2
0 and 21 are fixed or integrally molded, respectively. Drive coils 4 and 5 are arranged in each gap 18 and 19 so as to be able to reciprocate in the axial direction of the casing 1, respectively. These drive coils 4, 5 are wound around support members 22, 23, respectively, and each support member 22, 23 is fixed to a cylindrical piston 2, 3, respectively, which is concentric with the axis of the casing 1.

One support member 22 has a base 24 that is basically disk-shaped and is fixed to the piston 2, and a base 24 that is fixed to the peripheral edge of the base 24 at intervals in the circumferential direction and extends parallel to the axis of the piston 2. It consists of a plurality of support parts 25, and a drive coil 4 is wound around one end of each support part 25. The other support member 23 has a base portion 26 and a support portion 27 and is formed in the same manner as the one support member 22. The drive coil 5 is wound around one end of the support portion 27, and the base portion 26 is connected to the piston 3. is fixed to. In this way, each drive coil 4, 5
and the corresponding pistons 2, 3 are substantially integrated.

Support parts 25 and 2 in each support member 22 and 23
Blade plates 28 and 29 are provided at the other ends of drive coils 4 and 5 at right angles to the moving direction of drive coils 4 and 5, respectively. These blade plates 28, 29 function to scatter lubricating oil into the respective low pressure chambers 14, 15 when the drive coils 4, 5 and the pistons 2, 3 integral therewith reciprocate.

Insulating plates 3 made of electrically insulating material are provided on the inner end surfaces of the closing members 7 and 8 at both ends of the casing 1.
A receiving plate 3 made of conductive material via 1 and 32
3 and 34 are brought into contact with each other. Further, on the surfaces of the bases 24 and 26 of each support member 22 and 23 facing the closing members 7 and 8, respectively, receiving plates 37 and 38 made of a conductive material are provided via insulators 35 and 36 made of an electrically insulating material. is brought into contact. Resonant coil springs 39, 40 are interposed between the receiving plates 33, 37 and 34, 38 facing each other, respectively.

On the surfaces of the bases 24 and 26 of the support members 22 and 23 facing the partition member 13, receiving plates 43 and 44 made of a conductive material are abutted, respectively, via insulating plates 41 and 42 made of an electrically insulating material. On both sides of the partition member 13, receiving plates 47 and 48 made of a conductive material are abutted, respectively, via insulating plates 45 and 46 made of an electrically insulating material. Resonant coil springs 49 and 50 are interposed between the receiving plates 43 and 47 and 44 and 48 that face each other, respectively.

In this way, the reciprocating motion of the drive coil 4 is amplified by the pair of resonant coil springs 39, 49, and the reciprocating motion of the drive coil 5 is amplified by the pair of resonant coil springs 40, 50. The pistons 2 and 3, which make an amplified reciprocating motion together with the drive coils 4 and 5, are slidably and loosely fitted into cylinder portions 51 and 52 that are integrally provided to the partition member 13, respectively.

Referring also to FIG. 2, the partition member 13 includes:
A through hole 53 concentric with the casing 1 is bored, and by fitting a pair of cylindrical cylinder bodies 54 and 55 from both ends into the through hole 53, both low pressure chambers 14 and 15 of the partition member 13 are connected. Cylinder portions 51 and 52 are each integrally provided in the facing portion. That is, in the middle of the through hole 53, there are two undercut stepped portions 5 facing outward in the axial direction.
6 and 57 are formed respectively, and a metal flow material 58 and 59 such as lead or copper is applied to these stepped portions 56 and 57 to form a cylindrical cylinder body 5.
4 and 55 are press-fitted into the through hole 53. As a result, the metal flow materials 58 and 59
6, 57 and an undercut stepped portion formed on the outer periphery of each cylinder body 54, 55,
Metal flow materials 58 and 59 flow between the outer circumferential surfaces of the cylinder bodies 54 and 55 and the inner circumferential surface of the through hole 53, respectively, to perform fixing and sealing functions.

Annular notches 60 and 61 are formed on the outer peripheries of mutually opposing ends of the cylinder bodies 54 and 55, respectively. A substantially cylindrical liner 62 is inserted therein. In this way, a discharge valve chamber 63 is provided between the ends of both cylinder bodies 54 and 55.
is commonly formed in both cylinder parts 51 and 52.
In this discharge valve chamber 63, each cylinder body 54, 55 is provided.
A pair of discharge valves 66 and 67 which can be seated on valve seats 64 and 65 respectively formed on the end faces of the valve and which are guided by the liner 62; , 67 to the corresponding valve seat 6
A pressing coil spring 68 that urges the coils 4 and 65 is housed therein.

In the discharge valve chamber 63, each discharge valve 66, 67
In this case, the corresponding pistons 2 and 3 are the cylinder parts 51,
When the piston 52 moves outward in the cylinder chambers 69, 70 to perform a suction operation, the spring force of the pressing coil spring 68 causes the valve to seat on the valve seats 64, 65 and close the valve. , 3 is the cylinder chamber 69, 7
The valve seats 64 and 65 resist the spring force of the pressing coil spring 68 when moving inward within 0 to perform a discharge operation.
The valve is opened by moving away from the valve, and the cylinder chambers 69 and 70 are communicated with the discharge valve chamber 63.

On the other hand, at the tips of the pistons 2 and 3 in each cylinder chamber 69 and 70, communication holes 71 and 72 are provided at the bottom.
Holding members 73 and 74 each having a cylindrical shape with a bottom are provided with suction valve chambers 75 and 7 between the tips of each piston 2 and 3.
6 and are fixed to each other. In these suction valve chambers 75 and 76, suction valves 79 and 80 that can be seated on valve seats 77 and 78 formed on the tip surfaces of each piston 2 and 3 are movable in the axial direction of the pistons 2 and 3. Each is retained.

In each suction valve chamber 75, 76, the piston 2,
3 moves outward in the cylinder chambers 69, 70 to perform a suction operation, the suction valves 79, 80 close to the valve seats 7.
7, 78 to communicate the inside of the pistons 2, 3 with the suction valve chambers 75, 76, and therefore the suction valve chambers 7
The insides of the pistons 2 and 3 are communicated with the cylinder chambers 69 and 70 through the pistons 5 and 76 and the communication holes 71 and 72. On the contrary, when the pistons 2, 3 move inward within the cylinder chambers 69, 70 and perform a discharge operation, the suction valves 79, 80 are seated on the valve seats 77, 78 and closed.

Furthermore, with reference to FIG. 3, the partition member 13
A hole 81 that opens laterally is bored in the side of the cylinder 6. When the partition member 13 is fixed to the inner surface of the cylindrical body 6, the hole 81 is closed by the inner surface of the cylindrical body 6 and the suction chamber is closed. Form 82. An oil-impregnable porous metal or wire mesh 83 is inserted into the suction chamber 82 . Further, a suction pipe 84 is connected to the cylindrical body 6 so as to communicate with a suction chamber 82 .
4, a small amount of lubricating oil is sucked into the suction chamber 82 together with a fluid such as a refrigerant for an electric refrigerator. The partition member 13 is provided with a pair of suction holes 85 and 86 that open near the bottom of the suction chamber 82 and communicate with the low pressure chambers 14 and 15 on both sides of the partition member 13, respectively. Therefore, the suctioned fluid is distributed from the suction chamber 82 to the suction holes 85 and 86 and flows into both the low pressure chambers 14 and 15, respectively. Furthermore, the lubricating oil introduced into the suction chamber 82 diffuses into the porous metal or wire mesh 83 by capillary action, and is further accompanied by the fluid from the suction holes 85 and 86 to the low-pressure chamber 14,
It is distributed to 15 people. Such lubricating oil acts to lubricate the pistons 2, 3 and the inner surfaces of the cylinder chambers 69, 70 in the low pressure chambers 14, 15. In addition, the lubricating oil diffused and contained in the porous metal and the wire mesh 83 becomes atomized when it is entrained in the fluid, so that it is uniformly distributed and supplied to the outer surfaces of the pistons 2 and 3. Furthermore, since the fluid sucked into the suction chamber 82 from the suction pipe 84 expands within the suction chamber 82, suction noise is effectively reduced. Therefore, the suction chamber 82
has the function of a lubricating oil distributor and a muffler.

Discharge valve chamber 6 of through hole 53 in partition member 13
An annular groove 87 is formed on the inner surface corresponding to No. 3.
On the other hand, the liner 62 has a slit 88 formed in a part of the circumferential direction over the entire length in the axial direction, and the cross section perpendicular to the axis is formed in an arc shape with a center angle of nearly 360 degrees. Therefore, no matter how the liner 62 is arranged within the through hole 53, the discharge valve chamber 6
3 and the annular groove 87 are always in communication. The material of the liner 62 is required to be hard and have excellent wear resistance in order to guide the discharge valves 66 and 67. However, as described above, the slit 88 is formed and the annular groove 87 is formed in the partition member 13. By forming a hole in the liner for guiding the fluid from the discharge valve chamber 63, the complicated work of arranging the liner so that the hole corresponds to the discharge hole bored in the partition member 13 is eliminated. Become.

Referring again to FIG. 2, the partition member 13 is provided with a small diameter discharge hole 90 which communicates with the annular groove 87 at one end and communicates with the high pressure chamber 89 at the other end. The high pressure chamber 89 is formed by closing a hole 91 opened toward the right low pressure chamber 15 and bored in the partition member 13 parallel to the axis of the casing 1 with a lid member 92 .
The lid member 92 is basically in the shape of a thick disk, and is press-fitted into the hole 91 with a metal flow material 93 interposed between it and the undercut stepped portion of the hole 91 .

The fluid flowing into the high pressure chamber 89 from the discharge valve chamber 63 through the slit 88, the annular groove 87 and the discharge hole 90 expands as it flows into the high pressure chamber 89 from the small diameter discharge hole 90, thereby causing discharge noise. Reduced.

One end of a discharge pipe 94 that communicates with the high pressure chamber 89 is connected to a lid member 92 that closes the high pressure chamber 89, and this discharge pipe 94 extends through the right side low pressure chamber 15 along the inner surface of the cylindrical body 6. It is drawn out through a guide tube 95 provided in the closing member 8 and connected to a condenser of an electric refrigerator or the like. After the guide tube 95 is inserted into the through hole 96 formed in the closing member 8,
The one end portion 97 of the closing member 8 is welded by brazing.
It is fixed around the entire circumference. In addition, the low pressure chamber 15
Since it is necessary to keep the guide tube 95 airtight, the other end 98 of the guide tube 95 and the discharge tube 94 are also fixed over the entire circumference by brazing welding.

However, the position where the guide tube 95 is provided is close to the permanent magnet 17, as is clear from FIG. Therefore, if the one end 97 of the guide tube 95 is brazed and welded to the closure member 8 after the closure member 8 is fitted and fixed to the cylindrical body 6, the heat from the brazing welding will pass through the closure member 8 and the cylindrical body 6. The heat is transmitted to the permanent magnet 17 and has a thermal influence on the permanent magnet 17. Therefore, one end 97 of the guide tube 95 is inserted into the through hole 96 and brazed welded before the closing member 8 is fitted and fixed to the cylindrical body 6. Next, the discharge pipe 9 is inserted into the guide pipe 95.
After fitting and fixing the closing member 8 to the cylindrical body 6 while inserting the other end 98 of the guide tube 95 and the discharge tube 94
Braze and weld. At this time, the other end 98 of the guide tube 95 is in a position away from the permanent magnet 17, so that the heat effect due to brazing welding is not applied to the permanent magnet 17.
It will never reach.

Both ends of the casing 1, that is, both closing members 7,
8, sealing terminals 101 and 102 are inserted and fixed for connecting the socket connection terminals 99 and 100 while keeping the insides of the respective low pressure chambers 14 and 15 airtight. In other words, through holes 103 and 104 concentric with the cylindrical body 6 are bored in both of the closing members 7 and 8, and a step formed in the middle of these through holes 103 and 104 faces inward of the casing 1. Sealed terminals 101, 10 are attached to circular bent edges 107, 108 of portions 105, 106.
2 are fixed together by projection welding.

The sealed terminal 101 has a cylindrical portion 109 and a conical portion 11.
0 and a holding frame 111 made of a conductive material.
A terminal rod 113 is held concentrically through a non-conductive material such as a glass body 112. This sealed terminal 101 is connected to the closing member 7 and the holding frame 11 in a state in which the outer surface of the conical portion 110 of the holding frame 111 is in line contact with the bent edge 107 over the entire circumference.
Projection welding is performed by creating a potential difference between 1 and 1. At this time, the outer circumferential surface of the cylindrical portion 109 and the inner circumferential surface of the through hole 103 in the holding frame 111 are close to each other, and the welding current is short-circuited between these close surfaces, resulting in projection welding at the bent edge 107. may be inhibited. Therefore, when inserting the sealed terminal 101 into the through hole 103, a cylindrical insulator 1 made of an electrically insulating material is inserted between the outer peripheral surface of the cylindrical portion 109 and the inner peripheral surface of the through hole 103.
14 are interposed. This prevents short-circuiting of the welding current and ensures that the conical portion 110 of the sealed terminal 101 is projection-welded at the line contact with the bent edge 107. In this way, the low pressure chamber 14
Airtightness is maintained.

Furthermore, the terminal rod 113 of the sealed terminal 101 passes through the insulating plate 31 and is fitted into the cylindrical connecting member 115 fixed to the receiving plate 33. Thereby, the terminal bar 113 is electrically connected to the receiving plate 33 via the connecting member 115.

The other sealed terminal 102 is the sealed terminal 10 described above.
1, a holding frame 118 consisting of a cylindrical part 116 and a conical part 117 holds a terminal rod 120 through a glass body 119, and a cylindrical insulator is provided between the cylindrical part 116 and the inner surface of the through hole 104. With the body 121 interposed, the bent edge 108 and the conical portion 117 are fixed by projection welding, and the terminal rod 12
0 is inserted into the cylindrical connecting member 136. In this way, the middle portions of the through holes 103 and 104 are hermetically closed by the sealed terminals 101 and 102.
From those sealed terminals 101 and 102 to the terminal bar 11
3,120 are respectively projected. These terminal bars 113, 120 have socket connection terminals 99,
100 are fitted respectively.

The socket connection terminals 99, 100 are formed by covering female terminal portions 122, 123 for receiving the terminal rods 113, 120 with insulating layers 124, 125 made of a flexible electrically insulating material, such as synthetic resin, and each insulating The outer surfaces of the layers 124 and 125 are provided with a plurality of retaining pawls 128 and 129 that are inclined radially outward from the open end portion toward the rear and have locking step portions 126 and 127 formed at the rear ends. They are provided protrudingly at intervals in the direction. On the other hand, in the middle of the through holes 103, 104 in the closing members 7, 8, each sealed terminal 101, 102 is located at a position spaced outward in the axial direction from the sealed terminal 101, 102.
Locking surfaces 130 and 131 facing the sides and forming a step are formed, respectively.

Each socket connection terminal 99, 100 is inserted into the through hole 103, 1 while bending the retaining claw 128, 129.
04, whereby the female terminal portion 12
The terminal rods 113 and 120 are fitted into the terminals 2 and 123 to be electrically connected. At this time, each retaining claw 12
8 and 129 are engaged with the locking surfaces 130 and 131, respectively, so that the socket connection terminals 99 and 10
0 is prevented from escaping from the through holes 103 and 104.

An AC power supply 132 and a switch 133 are connected in series between the socket connection terminals 99 and 100. Further, an insertion hole 134 is formed in the partition member 13 in parallel to the axis of the casing 1, and a covered connection wire 135 connecting the receiving plates 47 and 48 is inserted through the insertion hole 134. Furthermore, the receiving plate 37
is connected to one end of the drive coil 4, and the drive coil 4
The other end is connected to the receiving plate 43 , the receiving plate 44 is connected to one end of the drive coil 5 , and the other end of the driving coil 5 is connected to the receiving plate 38 .

In this way, the AC power supply 132 is connected to the female terminal portion 122, the terminal bar 113, the connecting member 115, the receiving plate 33, the resonant coil spring 39, the receiving plate 37, the drive coil 4, the receiving plate 43, the resonant coil spring 49, and the receiving plate. 47, covered connection wire 135, receiving plate 48, resonant coil spring 50, receiving plate 44, drive coil 5, receiving plate 38, resonant coil spring 40, receiving plate 34, connection member 136, terminal bar 120, female terminal part 12
An electrical closed circuit is formed which returns to the AC power supply 132 via the switch 133 and the switch 133 in sequence.

Here, the magnetization directions of the permanent magnets 16 and 17 will be explained as shown in FIG. 4. That is, if the inner surface of the permanent magnet 16 corresponding to one drive coil 4 facing the drive coil 4 is the N pole, the inner surface of the permanent magnet 17 corresponding to the other drive coil 5 facing the drive coil 5 is the S pole. It is considered to be extreme. On the contrary, the inner side of the permanent magnet 16 may be set as the S pole and the inner side of the permanent magnet 17 may be set as the N pole. The coils 4 and 5 are wound in the same direction.

In this way, when the switch 133 is turned on and an alternating current flows through both drive coils 4 and 5, magnetic forces in the drive coils 4 and 5 approach each other as shown by solid line arrows during a half cycle of the alternating current. F acts,
In the next half cycle, magnetic forces F act on both drive coils 4 and 5 in directions that separate them from each other as indicated by broken line arrows. In this way, by energizing both the drive coils 4 and 5 connected in series with alternating power, the drive coil 4, the piston 2, and the drive coil 5
and the piston 3 reciprocate in opposite directions.

Next, the operation of this embodiment will be explained. By turning on the switch 133 and energizing the drive coils 4 and 5 with alternating power, the pistons 2 and 3 reciprocate in opposite directions to suck fluid. , performs the discharge action. At this time, the directions of movement of both pistons 2 and 3 are opposite to each other, but when one is performing a discharge action, the other is also performing a discharge action.
Since the directions of vibration caused by the movements of the pistons 2 and 3 are opposite to each other, the vibrations cancel each other out.
Therefore, the vibrations exerted on the casing 1 become extremely small, making it possible to attach the casing 1 directly to an electric refrigerator, etc., which was conventionally necessary to prevent the vibrations of the casing from being exerted on the outside. The container can be omitted,
Miniaturization becomes possible. There is also the advantage that the casing 1 can be directly cooled by outside air. Furthermore, since the vibration system is divided into two parts, the vibration system has a relatively small capacity.
By combining the two vibration systems, it is possible to increase the capacity, and it is possible to extend the life of the resonant coil springs 39, 40, 49, and 50.

Due to the movement of both pistons 2 and 3 in mutually opposite directions, the suction noise of the fluid sucked into the suction chamber 82 from the suction pipe 84 is reduced by the silencing effect due to the expansion in the suction chamber 82, and the suction noise is reduced through the suction holes 85 and 86. It is distributed and introduced into both low pressure chambers 14 and 15. Lubricating oil 137 accompanying the fluid introduced from the suction chamber 82 is stored in the lower portions of both the low pressure chambers 14 and 15, and this lubricating oil 137
Blade plates 28, 29 that reciprocate integrally with 3.
is scattered into the low-pressure chambers 14 and 15. This scattered lubricating oil uniformly adheres to the outer surfaces of the pistons 2 and 3, thereby achieving a lubricating effect between the pistons 2 and 3 and the inner surfaces of the cylinder chambers 69 and 70.
Smooth movement of both pistons 2, 3 is maintained.

The fluid in the low pressure chambers 14, 15 is connected to the pistons 2, 3
During the suction movement of the pistons 2 and 3 and the suction valve 7
It is introduced into the cylinder chambers 69, 70 through the pistons 9, 80, and further into the discharge valve chamber 63 through the discharge valves 66, 67 during the discharge movement of the pistons 2, 3. When the fluid discharged into the discharge valve chamber 63 flows into the high pressure chamber 89 through the discharge hole 90, it expands, its discharge noise is reduced, and is further led to a condenser of an electric refrigerator or the like through a discharge pipe 94.

In addition, as shown in FIG. 5, the permanent magnets 16, 1
The directions of the magnets 7 and 7 may be the same, and the winding directions of the drive coils 4 and 5 may be opposite to each other. Even in this case, the magnetic force F is applied to the drive coils 4 and 5 in the direction shown by the solid line arrow in the direction of mutual proximity in the half cycle of the alternating current, and in the next half cycle the magnetic force F is applied to the drive coils 4 and 5 so that they approach each other as shown in the broken line arrow. A magnetic force F in the opposite direction can be applied to.

It is also possible to connect the drive coils 4 and 5 in parallel so that the drive coils 4 and 5 can reciprocate in opposite directions.

As described above, according to the present invention, the permanent magnets 16,
17, and pole pieces 20, 21 forming annular gaps 18, 19 between the permanent magnets 16, 17.
Drive coils 4 and 5, which are energized by alternating power, are disposed in the gaps 18 and 19 so as to be movable in the axial direction of the casing 1, and are substantially integral with the drive coils 4 and 5. converted piston 2,
3 is slidably and loosely fitted into cylinder parts 51 and 52 that are provided integrally with the casing 1, and a through hole is provided at the end of the casing 1 for supplying alternating power to the drive coils 4 and 5. In the vibrating compressor in which holes 103 and 104 are formed, the through hole 10
3,104 has a circular bent edge 107,10
8 to form stepped portions 105, 106, and a conical portion 110 which is projection welded in line contact with the bent edges 107, 108 over their entire circumferences;
The sealed terminals 101, 102 are formed by holding terminal bars 113, 120 through non-conductive materials 112, 119 in holding frames 111, 118 having cylindrical parts 109, 116 and cylindrical parts 109, 116.
6 and the inner surface of the through holes 103, 104 with cylindrical electrical insulators 114, 121 interposed between the through holes 10
3,104, said terminal bar 113,12
The inner ends of the terminal rods 113 and 120 are connected to the drive coils 4 and 5, and the outer ends of the terminal rods 113 and 120 are connected to the AC power source 132.
socket connection terminals 99 and 100 that are connected to the through holes 103 and 104 and are fitted and locked from the outside thereof;
Since the terminal rods 113, 120 connected to the drive coils 4, 5 can be housed and fixed in the casing 1, the terminal rods 113, 120 and other objects outside the casing can be Contact is avoided, and short-circuit failures due to such contact can be prevented. Moreover, the holding frame cylindrical portions 110, 11
The terminal bars 113, 120 are positioned in the radial direction by fitting into the through holes 103, 104 of No. are carried out accurately, the terminal rods 113 and 120 in the casing 1 are inserted into the through holes 103 and 1.
Therefore, by simply inserting the socket connection terminals 99, 100 into the through holes 103, 104, the terminal portions 122, 123 of the connection terminals 99, 100 and the terminal bar 113, 120 can always be accurately connected. In addition, the cylindrical portions 110 and 117 and the through hole 1
Between the fitting surfaces with 03 and 104 is a cylindrical electrical insulator 1.
Since the holding frames 111 and 121 are insulated by the holding frames 111 and 121, short-circuiting of the welding current during projection welding between the fitting surfaces is prevented.
Projection welding to the through holes 103 and 104 of No. 18 can be always accurately performed over the entire circumference of the holding frames 111 and 118, and the sealed terminals 101 and 1
Since the through holes 103 and 104 can be hermetically closed by the terminal rods 113 and 12
Good airtightness within the casing 1 is always maintained regardless of whether or not the terminal 0 is connected to the external socket connection terminals 99, 100.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is an overall vertical sectional view of an embodiment of the present invention, FIG. 2 is an enlarged vertical sectional view of the partition member 13 of FIG. 1 and its vicinity, and FIG. 3 is a sectional view taken along the line - FIG. 4 is a circuit diagram showing the magnetizing direction of the permanent magnets 16, 17 and the winding direction of the drive coils 4, 5 in a simplified manner in FIG. FIG. 4 is a simplified circuit diagram showing another example of the winding directions of No. 4 and No. 5; 1...Casing, 2, 3...Piston, 4,
5... Drive coil, 16, 17... Permanent magnet, 1
8, 19... Gap, 20, 21... Pole piece, 39, 40, 49, 50... Resonance coil spring, 51, 52... Cylinder part, 99, 100...
...Socket connection terminal, 122,123...Terminal part, 101,102...Sealed terminal, 103,10
4...Through hole, 105, 106...Step part, 10
7,108...bent edge, 109,116...cylindrical part, 110,117...conical part, 111,118
... Holding frame, 112, 119 ... Glass body as non-conductive material, 113, 120 ... Terminal bar, 1
14, 121... Insulator, 132... AC power supply.

Claims (1)

[Scope of utility model registration request] In a cylindrical casing 1 with both ends closed, permanent magnets 16 and 17 are installed.
Pole pieces 20 and 21 are fixedly provided to form annular gaps 18 and 19 between the casing 1 and the casing 1. Pistons 2 and 3, which are arranged to be freely movable in the axial direction and are substantially integrated with the drive coils 4 and 5, are slidably and loosely fitted into cylinder parts 51 and 52 which are provided integrally with the casing 1. , a vibratory compressor in which through-holes 103 and 104 are formed at the end of the casing 1 for supplying alternating power to the drive coils 4 and 5, and a circular bend is formed in the middle of the through-holes 103 and 104. Step portions 105, 10 with edges 107, 108
6 are formed, and the conical parts 110, 117 and the cylindrical parts 109, 11 are projection welded in line contact with the bent edges 107, 108 over their entire circumferences.
Terminal bars 113, 120 are attached to holding frames 111, 118 having 6 through non-conductive materials 112, 119.
are inserted into the through holes 103, 104 via cylindrical electrical insulators 114, 121 between the cylindrical portions 109, 116 and the inner surfaces of the through holes 103, 104, The inner ends of the terminal bars 113 and 120 are connected to the drive coils 4 and 5, and the outer ends of the terminal bars 113 and 120 are connected to the AC power source 132 and connected to the through holes 103 and 120, respectively.
104. A vibratory compressor characterized in that the terminal portions 122, 123 of socket connection terminals 99, 100 are fitted into and locked from the outside of the vibrating compressor.