JPS58182445A - Coil frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention includes a stator casing surrounding a coil winding frame, and a field winding wound between two end flanges in the axial direction. The winding surface is entirely covered with an insulator between the end flanges, and for connecting the winding start end and winding end of the field winding and the external connection conductor of the field winding to be connected thereto. The invention relates to a coil winding frame, for example for a synchronous motor, which is partially covered by a supporting piece. A coil winding frame of this kind is known from German Patent No. 2,758,700.

In the known coil winding frame, a locking piece made of synthetic side is formed on one end flange of the coil winding frame as a P3# member for receiving the winding start end or winding end of the field winding. The locking piece can first be moved away from the other end wall, and then the field winding can be moved into the opening 1 (at the start and end of the inserted field winding onto the other end flange). It is arranged so that it can be transferred onto the open winding surface of the wire and fixed there.To insulate the free surface of the magnetizing winding between the axial end flanges, the known In the case of a coil-wound frame, i'C before installing the insulating member
Insulating material is wrapped over the entire free surface of the winding. Instead of leading out the winding start and the winding end of the field winding directly and also connecting the external connection conductors to these winding ends with additional insulation at the connection point, in known cases, on the winding A connecting pin is injected or molded into a locking piece of synthetic resin that can be folded back in the axial direction, and the starting and ending ends of the field winding are insulated at the inner end of the connecting pin. Connection is possible at the folded back position of the locking piece.

It is an object of the present invention to provide a coil winding frame of the type mentioned at the outset, which insulates the field winding, so that the starting and ending ends of the field winding are completely insulated from the external connecting conductor and are free from tensile stress. The object of the present invention is to configure the device so that it can be connected without any additional costs, requires no assembly costs, and can be simplified in terms of manufacturing technology, especially from the viewpoint of full automation.

This object is achieved according to the invention by providing a coil winding frame of the type mentioned at the outset, in which the free surface of the field winding is located at both end faces 7 of the winding frame.
It is wrapped tangentially between the flanges by an insulating sheath having an end-side seal, the seal comprising at least one support piece, each of which is connected in advance to the connection of each support piece to the starting end of the winding or This is achieved by being able to be moved together with the end of the winding to its joining position. The insulation coating has the function of insulating the exposed winding surface of the field winding between both end flanges, and the function of insulating the exposed winding surface of the field winding between the winding start and end of the field winding and the external connection conductor in a single component. It combines the function of insulating and tensile stress-free retention of the connections to be made.

The starting end of the winding is placed in the sealing section on one end of the insulation coating, the end of the winding is placed in the sealing section on the other end of the insulation coating, and the two sealing sections are connected to each other before being moved to their final joining position. Since they are moved apart, there is a minimum distance between the two separate connections to be connected, so that the connection between the external connecting conductor and the winding start or winding end is completely mechanized.

Connection operations can be carried out without interfering with the individual assembly and connection steps. By finally moving the end-side sealing part of the insulation coating to its joining position, the winding start end and winding end end can be simultaneously insulated from the outside without applying tensile stress to the external connection conductor. Can be brought to final position.

The insulating sheathing can also be constructed as a one-piece part and is particularly preferably attached to the outer edge of one end flange of the hoist with one axial edge thereof outside the area of the removable sealing part. It is formed in a dot shape, especially in the part facing the joining position.

The insulation coating can be transferred from the radial plane of one end flange onto the still-dried winding surface of the field winding after winding of the field winding. In this case, it is preferable that the coil winding frame and the insulating coating formed on one end flange of the coil frame are constructed as an integral synthetic resin component.

In order to easily assemble and create the connection between the winding start and winding end of the field winding and the corresponding external connecting conductor, the support pieces are each configured as a clamping slit and the insertion end of the connecting conductor It is advantageous if the part is at least prefixable in the clamping slit. After connecting the winding start end and the winding end of the field winding to the external connection conductor, the connection part can be reliably and particularly easily assembled into the sealing part and the support part to be transferred to the final joining position. In order to achieve this, the two sealing parts preferably overlap each other in the tangential direction 7 in their final position, and the overlapping parts adjoining each other on either side engage one another, in particular by means of serrations.

In a further embodiment of the invention, the terminal end of the connecting conductor previously fixed in the clamping slit can be finally fixed simultaneously during one working process by locking the sealing part and the support part. According to the invention, one of each sealing part and/or each support part has a slit opening in the form of a Krange slit for the connecting conductor ends, which is offset in the radial direction between the two corresponding support pieces or the two sealing parts, and also on the other side. Projections projecting in opposite directions are formed respectively, and the end of the connecting conductor fixed in advance is moved to the winding start or winding end of the field winding, and the end of the insulation coating is moved to the joining position. Sometimes it is advisable to make it possible to fix it in the clamp slit.

The supporting piece may be fitted with a connecting plug for the connection between the winding start and the winding end of the field winding and the external connection conductor, as in DE 27 58 700. I can do it.

However, according to the present invention, the connection between the external connecting conductor and the winding start end and the winding end end of the field winding can be particularly easily formed without applying tensile stress and insulated. , the connection parts # are held in the clamp slits of the support piece by the ends of the core wires from which the insulation has been removed, protruding from the inner surface of the sealing part to be transferred to the joining position, and the winding start end and winding end of the field winding are The conductor ends connected to are bent laterally before moving the support piece or sealing part into the joining position.

On the one hand, this provides good locking possibilities for winding, and in some cases also makes it possible to braze the start or end of the field winding with the protruding core of the connecting conductor. On the other hand, by bending the conductor ends in the plane of the sealing part when the sealing part is moved into its joining position, an additional installation for the projecting end of the connecting conductor does not require space.

Next, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 shows a coil winding <2 with two axial end flanges 21, 22 and a hollow cylindrical winding core 23,
Field winding 1 with a winding start 11 still in a free state and a winding end 12 still in a free state on a winding core 23
is wrapped.

FIG. 2 shows the state before assembly of the winding frame shown in FIG. 1 with the field winding tstt wound thereon, and shows the winding start end 11 and winding end 12 of the field winding 1 and the ends of the connecting parts a4 and 5. It will be explained that using the coil winding frame of the present invention, the connection work between the parts can be simplified both in terms of manufacturing technology and assembly technology.

As is clear from FIG. 2, first, the insulating coating 3 is partially wrapped around the exposed winding surface of the field winding 1 in the tangential direction. End side sealing part 8L32 of insulation coating 3
can be laterally moved away from the coil winding 2, so that the sealing part is in a substantially horizontal folding plane, and the Krange slit 38 of the support piece,
External connection conductors 4, 5 fixed in advance in 34 project above the end side sealing parts 31, 32 with core wires 41, 51 whose insulation coating has been stripped off.

As shown in FIG. 2, the configuration of the coil winding frame 2 with only partially wrapped insulation sheath 3 and end side seals 31, 32 which are laterally moved apart is as follows:
For example, it can be easily obtained using an automatic assembly device.

That is, the hollow cylindrical winding core 23 is attached to the core shaft of the winding device, and the sealing part 31 is moved away from the side.
．． 32 is caused to be held in the position shown in FIG. 2 by a corresponding forked arm of the winding device.

Clamp slits 33°: 34 on the left and right sides of coil winding frame 2
The connecting conductors 1 and 5 fixed in advance in the winding start end 1
1 around the exposed core wire end 41 of the connecting conductor 4,
Also, the winding end 12 is connected to the bare core end 5 of the conductor 5.
1, it is connected to the winding start end 11 and the winding end end 12, and then the connection can be brazed in a soldering bath or brought into contact with each other by performing band spot welding. can. Next, the protruding core wire ends 41.51 of the connecting conductors 4, 5 are bent in the plane of the opened sealing part 31.32 of the insulation coating 3.

The sealing parts 31 and 32, which have been turned so as to open laterally, are brought to their joining positions. In order to simply obtain a joint that can be adapted to the various tangential widths given according to the tolerances and that nevertheless guarantees a reliable retention, the sealing parts 31, 32 have a tangential extension in the overlap area. It has serrations. At the same time, each end side sealing part 3
1.82 or integrated clamp slit 3
The support piece in the shape of 3°34 has a protrusion 37 formed on the right side sealing part 31, a -1 included in the clamp slit 3.1 of the left side sealing part 32, and a protrusion 37 formed on the left side sealing part 32. The protruding part 38 is inserted into the clamp slit 33 of the right sealing part 31, and in this case, the connecting conductor 4, which is fixed in advance in the clamp slit 33 or 34,
5 is configured to be final (().

Furthermore, in order to facilitate guiding the winding start end 11 of the field winding l to the inner surface of the winding core 23 and to insulate the winding start end 11 from the inside and outside of the axial end surface of the field winding 1 at the same time, According to the invention, the winding starting end 11 of the field winding 1 wound on the inner core 23 of the coil winding 2 between its end flanges 21 and 22 is connected to one end flange in the area of the first winding core 23. 21 through the slit opening 24 on both end faces 2 flange 21 . ．． 2
In this case, the winding starting end 11 is inserted from the outside into the winding space between the two, and in that case, the winding start end 11 passes inward through one end flange 21 outside the slit opening 24 and is supported insulated against the field winding 1. In addition, insulating tongue pieces 25 are formed on one end face clamp 21 in order to insulate the winding wire from the outside. It is provided that the starting end 11 can be guided in an insulating manner through the gap 26 between the insulating tongue 25 and the part of the end flange 21 which engages the slit opening 24 . At the same time, the winding start end 1
The slit opening 24 is configured as an opening that opens radially outward and reaches the winding core 23 inwardly in the radial direction so that the winding core 23 can be easily passed through the slit opening 24 . This slit opening 24 is preferably provided so that the winding starting end 11 runs diagonally within the gap 26 from the point where the winding starting end 11 is guided completely through the slit opening 02.1 in the assembled state shown in FIG.

Before turning the end side seal from the position shown in FIG. 2 to its final seal position, only one winding surface remains open. It is preferable to cover the parts not yet covered with the insulation coating 3 with a thin insulation sheet.

In order to accurately guide the insulation sheath 3 to be wound around the coil winding 2, an end flange 21. ．． It is preferable to form a guiding protrusion 39, 39 that comes into contact with the axially inner end surface of 22.
.

FIG. 4 shows a coil-wound motor casing 8 constructed in accordance with the present invention and completed as shown in FIG.
This shows the state in which it is incorporated into the .

Of course, instead of the motor casing it is also possible to provide, for example, a casing for a switch or a relay.

In order to pass the external connecting conductor 1.5 through the insulated slit opening of the motor casing 8 as in the case of FIG. 4, or to similarly pass the plug 6.7 as in the case of FIG. According to an advantageous embodiment of the invention, the supporting piece 8
3.34 is provided with a seat 35.36 projecting in the radial direction, and this seat 35.36 is configured to insulate and penetrate the external connection conductor 4,5t or the plug 6.7 into the slit opening 81 of the casing 8. and then insert it.

As described above, a coil winding frame constructed in accordance with the present invention is useful for simplifying manufacturing and assembly. That is, the coil winding frame according to the invention is tangentially surrounded by an outer part which either overlays the coil winding frame laterally or is made as a separate part. The outer part serves for holding and fixing the connecting conductor or for protection against tension and also for insulation. The terminal ends of the connecting conductors are accommodated in recesses in the outer part. After winding the wire around the stripped core end of the connecting conductor, the joint can be made in contact by brazing in a soldering bath or by band and spot welding. The connecting conductor with the insulation removed can be bent to the side without taking up space. The seals at the ends of the two side sections are engaged and compressed, so that the connecting conductor is pressed through the projection into the recess and is thus fixed and unstressed even under tension.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is a perspective view showing a coil winding frame around which a field winding is wound, with the winding starting end and winding end free, and FIG. 2 is the same as FIG. 1. FIG. 2 is a perspective view showing a handmade coil winding frame in which the winding start end and winding end of the winding wire are connected to an external connection conducting wire. Figure 3 is a perspective view showing the completed coil winding frame with field winding wound thereon, Figure 4 is a perspective view showing the coil winding frame shown in Figure 3 installed inside the motor casing □, Figure 5 This figure is a perspective view similar to FIG. 4 in which the winding terminal is configured as an insertion plug. l... Field winding S 4, 5... External connection conductor, 6,
7... Plug, 11... Winding start end, 12...
・Winding end, 2... Coil winding (, 21, 22...
End flange, 3... Insulation coating, 81.32... End side sealing part, 33.84... Clamp slit.

Claims (1)

[Claims] 1) A stator casing surrounding a coil winding, and a field winding wound between two end flanges in the axial direction,
The outer winding surface of the field winding is entirely covered with an insulator between the end flanges, and the winding start end and winding end of the field winding and the field winding to be connected thereto. In a coil winding frame for an electric motor, which is partially covered by a support piece for connecting an external connection conductor, the free surface of the field winding extends tangentially between the end faces 7 of the winding frame and the end side sealing part. The sealing part is provided with at least one support piece, and the winding start 4 is connected in advance to the connection of each support piece.
1. A coil winding frame, characterized in that it can be moved to its joining position together with the wire or the end of the winding. 2. In the coil winding frame according to claim 1, the insulating coating is dotted on the outer edge of one end flange with one axial edge thereof outside the area of the removable sealing part. 1. A coil winding frame formed of a coil winding frame, characterized in that the winding of the field winding can be wound from the radial plane of the rear end flange onto the still free winding proboscis surface of the field winding. 3. A coil winding frame according to claim 2, characterized in that it is constructed as an integral synthetic resin injection molded part together with an insulating coating formed on one end flange. 4) In the coil winding frame according to any one of claims 1 to 3, each of the support pieces is configured as a clamp slit, and the inserted end of the connection 2s edge is inserted into the clamp slit. A coil winding frame characterized by being at least prefixable. 5) In the coil winding frame according to any one of claims 1 to 4, the two corresponding sealing portions overlap each other in the tangential direction at the sealing position,
A coil winding frame characterized in that overlapping portions that contact each other engage with each other in the lateral direction. 6) The coil winding frame according to claim 5, wherein the sealing portion has saw teeth at the overlap portion. 7) In the coil winding frame according to any one of claims 1 to 6, in the valley seal portion and/or the support portion, two support pieces or seals tangentially correspond to each other at one end. Between the parts, slit openings (clamp slits) for the connecting conductor ends or winding ends are formed which are offset in the radial direction, and on the other hand, protrusions that project in mutually opposite directions are formed. This protrusion allows the connecting conductor end or the winding end to open a slit (clamp slit) at the end sealing position of the sheathing.
A coil-wound frame characterized by being fixed inside. 8) In the coil winding frame according to any one of claims 1 to 7, a support piece (clamp slit)
In each case, the ends of the connecting conductors are held by the core ends with the insulation removed, protruding from the inner surface of the sealing part to be transferred to the sealing position, and the cores are connected to the winding start or winding end of the field winding. A coil winding frame in which the wire ends are bent before the supporting piece or sealing part is moved to the joining position. 9) In the coil winding frame according to any one of claims 1 to 8, a guide protrusion is formed on the inner surface of the insulating coating, and the guide protrusion comes into contact with the axial inner surface of the end flange when the insulation coating is folded back. A coil-wound frame characterized by: 10) In the coil winding frame according to any one of claims 1 to 9, the field winding is wound on the inner winding core of the coil winding frame between both 4i-plane flanges. The starting end of the line is the opening of one end flange (slit opening)
A coil winding frame characterized in that the coil winding frame is introduced from the outside into the winding space between both end flanges in the region of the winding core. 11) The coil winding frame according to claim 10 is provided with a slit opening that opens radially outward and extends radially inward to the winding core.f! : Characteristic coil winding frame. 12. In the coil winding frame according to claim 1O or 11, the winding start end of the field winding passes through one end face flange outside the opening (slit opening), and is connected to the field winding. A coil-wound frame characterized in that it is insulated and supported. 13)! In the coil winding frame according to any one of claims 1 to 13, the flange on one end face has an opening (slit opening) and a portion of the flange on the one end face following this opening. Insulating tongues are formed to face each other with an axial gap, and the starting end of the winding is insulated and inserted through the gap between the insulating tongues and the part where the end face flange of the opening is involved. %. ■) The coil winding frame according to any one of claims 1 to 13, characterized in that the support piece includes a piece projecting in the radial direction. Coil winding. 15) In the coil winding frame according to claim 14, an identifier casing comprising an insulating member that can be inserted into a slit opening of the stator casing for receiving a connecting conductor of a field winding or a plug. 1. A coil winding frame having a radially projecting piece fitted into a slit opening of a stator casing so as to serve as an insulating penetration part for an external connection conductor or a plug.