JPS6127138Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multilayer winding movable coil used in diaphragm pumps and the like.

The movable wire is driven back and forth in the axial direction by passing an exciting current through it. By the way, there is 1 on the outer circumference of bobbin 1.
In the layer-wound movable wire A shown in FIG. 1, air hits each wire of the movable wire A, so heat radiation is good. However, in the case of the movable coil A shown in FIG. 2, which is formed by winding in multiple layers, the area of the coil in contact with the air is small, resulting in poor heat dissipation and a problem of high temperature rise in the coil. In addition, in the case of multi-layer winding, there is a concern about variations in the wire ring, so as shown in Fig. 3, collars 2 are provided on both sides of the bobbin 1 to prevent variations. There was a problem that the temperature rise was even higher. In addition, in the case of the multi-layered movable wire ring A, there is a problem in that unevenness occurs in the position of the wire ring in the layer above because there is variation in the size of the space between the wires.
In particular, this problem becomes worse as the number of layers increases, and as a result, as shown in Figure 4, the thickness of the wire ring x
There was a problem in that the movable wire ring A could not be incorporated into the device because there was a space that exceeded the length of the wire.

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a multi-layered movable coil that can reduce the temperature rise of the coil.

The present invention will be explained below with reference to examples. FIG. 5 shows a cross-sectional view of an embodiment in which a part of the bobbin 1 can be omitted. The bobbin 1 is made of plastic or the like and has a ring shape with an H-shaped cross section. Flanges 2 are formed at both ends of the bobbin 1. A first coil 3 and a second coil 4 of multilayer winding are wound around the inner circumferential surface and the outer circumferential surface, respectively. Next, the 6th
To explain the manufacturing process of the multi-layer winding movable wire ring of the present invention with reference to the manufacturing process diagrams shown in Figures a to d, first, ring-shaped holding jigs B, B are placed on the front and back of the outer periphery of the cylindrical winding jig C. The holding jigs B and B are placed apart from each other for a certain period of time, and multiple layers of wire are wound around the outer periphery of the winding jig C between the holding jigs B and B to form the first wire ring 3. Next, after removing the holding jigs B and B, the inner half of the collar 2 of the bobbin 1 is bent outward as shown in FIG. 6b, and the bobbin 1 is mounted on the outer periphery of the first wire ring 3. Here, the flange 2 can be formed from a thin piece and the inner half can be forcibly expanded outward, or if a notch is formed in the radial direction and bent outward, which is a common practice, as shown in Fig. 6b. This allows for bending as shown in the figure. After that, the bent tsuba 2 is returned to its original state. Thereafter, as shown in FIG. 6C, the winding end 3a of the first wire ring 3 is introduced into the outer peripheral surface of the bobbin 1 through the notch 5 formed in the collar 2. Thereafter, a wire rod whose winding start end is connected to the end winding end 3a is wound in multiple layers around the outer peripheral surface of the bobbin 1, and the second wire ring 4 is wound around the outer peripheral surface of the bobbin 1, so that the desired movable wire ring A is It is completed as shown in Figure 6 d. As shown in FIG. 7, this completed movable wire ring A has one side of the collar 2 fixed to a coil stand 7 having a drive shaft 6 inserted through the center thereof, thereby forming a driving member of a diaphragm pump. In the manufacturing method shown in FIGS. 6a to 6d, the first wire ring 3 is attached to the outer peripheral surface of the winding jig C,
Since the second wire ring 4 is wound on the outer peripheral surface of the bobbin 1, the unevenness formed on the outer peripheral surface of each wire ring 3, 4 is reduced to half that of the conventional method, making the winding work easier.

The bobbin 1 may be formed without a flange as shown in FIG. 8, and in this case, the material used may be plastic, paper, Al, etc. In this case, both ends of the bobbin 1 are connected to the first and second wire rings 3 and 4.
It protrudes outward from both sides to enhance the heat dissipation effect.

Further, as shown in FIG. 9 or 10, the bobbin 1 has a ring body 1a made of Al, plastic, etc., which has a U-shaped cross section and is open on the outer circumferential side, and has an outer diameter that can be fitted onto the inner circumference of the ring 1a. , the ring body 1b with an open inner peripheral surface side.
The ring body 1b may be fitted into the inside of the ring body 1b, and the inner circumferential surface of the ring body 1a and the outer circumferential surface of the ring body 1b may be adhesively fixed. In this case, after storing the first wire 3 in the ring body 1b, the ring body 1a may be inserted, and the second wire 4 may be wound inside the ring body 1a. The wires may be wound using the same manufacturing method as in the embodiment shown in FIG. , 1b may be attached.

Furthermore, as shown in FIG. 11, the bobbin 1 may be made of a material with high thermal conductivity, and both ends of the bobbin 1 may be made to protrude outward from the collar 2. In this case, the temperature of the movable wire ring A is reduced. This can further enhance the effect.

In the present invention, the inner circumferential surface of a ring-shaped bobbin is brought into contact with the outer circumferential surface of a hollow first wire ring formed by winding a predetermined layer.
The second wire is formed by winding a predetermined layer on the outer peripheral surface of the bobbin, and the end of the first wire is connected to the beginning of the second wire, so that the inner peripheral surface of the first wire is connected. The outer circumferential surface of the second coil comes into contact with the air, resulting in twice the heat dissipation effect and lower temperature rise compared to conventional multi-layered movable coils.

[Brief explanation of the drawing]

Figure 1 is a partially omitted cross-sectional view of a single-layer movable wire ring, Figures 2, 3, and 4 are cross-sectional views of a conventional multilayer movable wire ring that can be partially omitted. FIG. 6 is a partially omitted cross-sectional view of an embodiment of the invention; FIGS. 6 a to d are explanatory views of the manufacturing process of the same; FIG. The figure is a partially omitted perspective view of another embodiment of the present invention, Fig. 9 is a partially omitted sectional view of another embodiment of the present invention, and Fig. 10 is a partially omitted cutaway view of the same bobbin. The exploded perspective view and FIG. 11 are partially omitted sectional views of another embodiment of the present invention, in which 1 is a bobbin;
1a and 1b are ring bodies, 3 is the first wire ring, 4 is the second
It is a wire ring.

Claims (1)

[Claims for Utility Model Registration] (1) A ring-shaped bobbin having flanges protruding in the outer circumferential direction and the inner circumferential direction at both ends, and a hollow first wire ring formed by winding a predetermined layer on the bobbin. The outer circumferential surface of the first wire is placed in contact with the inner circumferential surface of the bobbin, and a predetermined layer is wound on the outer circumferential surface of the bobbin to form a second wire. A multi-layer movable wire ring formed by connecting the winding end and the winding start end of a second wire ring. (2) The multi-layer winding movable coil according to claim 1, wherein the bobbin has an H-shaped cross-section. (3) Utility model registration claim 1, wherein the bobbin is formed by fitting and bonding a U-shaped ring body with an inner periphery opening onto the inner periphery of a ring body having a U-shaped cross section with an outer periphery opening. Multi-layered movable wire ring. (4) A utility model registration request in which the bobbin interposed between the first wire ring and the second wire ring is formed of a material with high thermal conductivity, and both ends of the bobbin protrude to both sides of both wire wheels. Range 1st or 2nd or 3rd
Multi-layer winding movable wire ring as described in Section 1.