RU2061991C1 - Ac generator - Google Patents

Abstract

FIELD: electrical engineering; generator sets equipped with anti-interference shields. SUBSTANCE: as generator terminal block has one binding post; conductor fastening part is available of two options and has supporting disk and clamp or connector and clamp. They may be braced together by means of nut with lock washer or pipe end cap. Shroud pipes may be provided with internal thread and they are closed with end cap having external thread; shroud may be built integral with shield. EFFECT: reduced quantity of current-conducting and fastening parts, dispensing with conductors, which simplified generator design, reduces its size and space requirement. 5 cl, 5 dwg

Description

 The invention relates to the field of electrical engineering and can be used in generator sets equipped with a screen to suppress radio interference.

 A known alternator (1) containing a stator magnetic circuit, a rotor with an excitation winding, rectifier blocks, brush assembly, a rotor with a pulley and a cooling fan.

 The disadvantages of this device include radio interference emitted by the brush unit, the rectifier unit, conductors connecting the generator nodes with contact and output bolts.

 This disadvantage was eliminated in generators of the type G290, G290A, G290V (2), containing a stator, a rotor with a pulley and a fan, bearing shields, rectifier blocks, a screen for suppressing radio interference and a device for connecting bus rectifier blocks with a car wire (hereinafter - the connecting device ), comprising a housing with nozzles and a conductor mount. This generator is taken as a prototype, since it is the solution closest to the invention in its technical essence.

 The disadvantage of the described generator is the complexity of the connecting device. According to the prototype, it includes a contact bolt that receives electric current from the positive tires of the rectifier blocks, a contact bolt that transfers electric current to the shielded wire of the car, a conductor connecting these bolts, as well as fasteners and insulating parts. The contact bolt (3), which transfers current to the shielded wire of the car and is included in the attachment point of the conductor, has a thread for attaching the bolt to the screen and a thread for attaching the car wire to the bolt, as well as a support collar "c" for installing the bolt on the screen and laying on car wires, square “g” to prevent turning the bolt when tightening the nuts, tide “c” with hole “e” to fix the car wire. From the drawings and descriptions it is seen how difficult the connecting device is both in design and in technological design. In addition, to accommodate the above details, a significant amount of space under the screen is required, which is also a serious disadvantage of the prototype.

 The objective of the invention is to simplify the design of the generator, reducing its size and volume. When solving this problem, the invention provides such a technical result as reducing the number of conductive and fasteners and the exclusion of conductors.

 This problem is solved due to the fact that the contact bolt that transfers electric current to the shielded wire of the car is excluded from the design of the generator. Thus, the connecting device has one contact bolt, and the conductor mount has two alternative designs and is made in the form of a supporting washer and bracket or connector and bracket. At the same time, they can be tightened either with a nut with a lock washer, or with a pipe plug. In addition, the internal threads can be made on the nozzles of the housing and they are closed with plugs with an external thread, and the housing can be made integral with the screen.

 The invention is illustrated by drawings.

 In FIG. 1 shows the design of the generator with the attachment point of the conductor according to version 1; figure 2 node mounting the conductor (version 2); in FIG. 3 design of the connector of the attachment point of the conductor (version 2); figure 4 node mounting the conductor (version 3); figure 5 node mounting the conductor (version 4).

 Execution 1 (figure 1). The alternating current generator comprises a stator 1, a rotor with a pulley and a fan 2, bearing shields 3 and 4, rectifier blocks 5, a screen for suppressing radio interference 6 and a connecting device including a contact bolt 7, a housing 8 with two pipes 9 and 10, an insulator 11, a support washer 12, a bracket 13, washers 14, nuts 15 with a lock washer 16, bushings 17 and 18, nuts 19 and 20, an insulating cover 21. The housing 8 is used for fastening all parts included in the device and for absorbing radiated interference. The insulator 11 provides isolation of the contact bolt 7, the support washer 12, the bracket 13 and the vehicle wire from the housing 8 and the shield 6. In addition, the insulator prevents the bracket 13 from rotating around the axis of the contact bolt 7 while tightening the nut 15.

 The car wire is laid on the support washer 12 and pressed against it by the bracket 13 through the washer 14 by means of the nut 15. There are collars on the edges of the support washer 12 and the bracket 13 to prevent the car wire from slipping out. Bushings 17 and 18 and nut 9 are used for fastening the shielding armor of the vehicle wire. A nut 20 with an insulating cover 21 closes the housing 8 after attaching the wire.

 Execution 2 (figure 2). The connecting device is characterized in that its housing 8 is attached to the screen 6 by means of a connector 22 screwed onto the contact bolt 7. The spring washer 23 (corrugated or conical) provides guaranteed contact between the threaded surfaces of the connector 22 and the contact bolt 7. The vehicle wire is laid on the support the collar of the connector with an emphasis on the rear wall of the insulator 11 and is pressed by the bracket 13 using the nut 15 with the washer 16.

 The connector 22 (FIG. 3) has a threaded hole A for screwing onto the contact bolt 7, in the middle part a round hole 24 for laying the vehicle wire and a threaded pin 25 for installing and pressing the bracket 13.

 Execution 3 (figure 4). The connecting device differs from version 2 in that the bracket 13 is pressed by the nut 20 through the plug of the nozzle 26. The connector 22 differs from the connector shown in Fig. 3 in that the pin for installing the bracket has a shorter length and there is no thread on it.

 Execution 4 (figure 5). The connecting device is characterized in that its housing 8 is made integral with the screen 6, on the nozzles 9 and 10 there are openings with an internal thread, which are closed with plugs 27 and 28 with an external thread. In this case, the vehicle wire is pressed against the connector by the bracket 13 by means of a plug 27 through the insulating cover 21.

 Due to the exclusion from the design of the connecting device of the contact bolt generator, the number of conductive and fasteners is reduced, conductors are eliminated. This leads to a reduction in the size and volume of the connecting device. This reduces the number of special (thread-cutting) tools, because both nozzles are made with the same thread. In addition, manufacturing technology is simplified, as on the case, it is easier to cut the internal thread than the external thread, and vice versa on the cork (blind nut). YYY2 YYY4

Claims (5)

 1. An alternating current generator comprising a stator, a rotor with a pulley and a fan, bearing shields, rectifier blocks, a screen for suppressing radio interference and a connecting device including a housing with nozzles, a contact bolt and a conductor fastener, characterized in that the conductor fastener is made in in the form of a tightened washer or connector and bracket, while the connector has a threaded hole for screwing onto the contact bolt.  2. The generator according to claim 1, characterized in that the supporting washer or connector and bracket are tightened with a lock washer with a nut.  3. The generator according to claim 1, characterized in that the support washer or connector and the bracket are pulled together by a plug of the pipe.  4. The generator according to claim 1, characterized in that the pipes of the housing are made of internal thread and they are closed with plugs with external thread.  5. The generator according to claim 1, characterized in that the housing is integral with the screen.

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