US2278561A

US2278561A - Horn motor and relay unit

Info

Publication number: US2278561A
Application number: US323245A
Authority: US
Inventors: William J Rady
Original assignee: Motors Liquidation Co
Current assignee: Motors Liquidation Co
Priority date: 1940-03-11
Filing date: 1940-03-11
Publication date: 1942-04-07
Anticipated expiration: 1959-04-07

Description

April 7, 1942. w, ,1; RAW 2,278,561

- HORN MOTOR AND RELAY UNIT Filed March 11, 1940 54 4 A "-4 I 41 I f I I I 59 60 5| 42 59 s3 54 3 70 5 5! m :3 3| ii G G 5b I 5 I L z v I l H) 6 as H 6M. 7' a as I 59 I INVENTOR um 85 Wu'mm JZRADY 7a BY o a 2 ZI'JATTJORNIEYS Patented Apr. 7, 1942 HORN MOTOR AND RELAY UNIT William J. ltady, Anderson, Ind., assignor to General Motors Corporation, Detroit, Mich, a corporation of Delaware Application March 11, 1940, Serial No. 323,245

Claims.

This invention relates to electric horns par- .ticularly for automobile use. Anautomobile horn is generally operated by a push button at from the horn itself. It is an object of the present invention to combine the horn relay with the horn motor.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawing wherein a preferred embodiment of the invention is clearly shown.

In the drawing:

, Fig. 1 is a plan view of a motor. and relay unit for an electric horn.

Fig. 2 is a sectional view on line 2-2 of Fig. 1.

Fig. 3 is a view in the direction of the arrow 3 of Fig. 1.

Fig. 4 is a sectional view on the line 44 of Fig. 3.

Fig. 5 is a wiring diagram.

Referring to the drawing, the horn comprises a collar 28 having-a central opening or throat 2| leading-into a projector 22, a fragment of which is shown. The collar 20 cooperates with the diaphragm 23 to form an air compression chamber from which the sound vibrations start when the diaphragm is oscillated. Screws'25 and nuts 26 secure to the collar 20 a gasket 21, the diaphragm 23 and the base frame 3| of a motor 38.

Motor 30 comprises an E-'-shaped magnet core 32'comprising a plurality of laminations connected to each other by rivets 33 with brackets the diaphragm 23 located between two

clamping washers

42 and 43.

Nuts

45 and 45a threaded. on rod 48 secure armature 46 and armature leaf spring 41 to the rod 46. The rod 48 carries a nut 50 for controlling the horn circuit breaker which comprises a stationary contact 5| mounted on a relatively rigid bracket 52 and a movable contact 53 mounted on a leaf spring plate 54 and movable within a hole in an insulating plate 55 with which the nut 50 directly engages.

Referring to Fig. 3, the

parts

52, 55 and 54 form apart of a stack of flat laminations, which stack includes also a terminal plate 56, insulation plate 51, terminal plate 58, a-contact bracket 59,

insulating washer 60 and armature "leaf spring 41, all of which are supported by a U-shaped' pedestal 6|. These parts are secured to the pedestal by a plurality of rivets 62 which are insulated from all the parts of the stack except the uppermost part, namely the contact bracket 52. The rivets 62 therefore provide an electrical connection between the bracket 52 and the pedestal 6| which is grounded through the horn motor frame 3|, thus providing a ground connection for the contact 5| of the horn circuit breaker. As stated before, the contact 53 is mounted upon the leaf spring metal member 54 which engages a terminal plate 56. This plate 56 is connected, as shown in Fig. 1, by lead 64 with a horn motor magnet coil 65 located within the magnet core 32, and by-a lead 66 with a resistance element 61 which is grounded. The function of the resistance 61 is to reduce sparking at the contacts 5| and 53. The other end of the magnet coil 65 is connected by a lead 68 with an apertured ear 58a of bracket 58 which,

being in electrical contact with contact bracket 59, has an electric connection with the contact 69 of the horn relay, which will now be described. Wire 89 leads from bracket 58 to other horns such as represented by horn magnet coil 65'. lead 66 and circuit breaker contacts 53' and 5| in Fig. 5. Thus the relay of the disclosed horn will control also the circuit of other horns.

Relay contact 69 engages a movable contact 10 mounted on an armature 1| connected by a spring hinge plate 12 with a flange 13 of a 2- shaped bracket 14 (Fig. 4). Bracket 14 supports a central core 15 for a relay magnet coil 16; The head 11 of the core 15 acts as a pole face. One end of coil 16 is attached to core 15 and the other end is connected by wire 18 withpedestal 6| by screws 84. The screws 84 provide an electrical connection between the terminal plate 83 and the bracket 14, thereby connecting battery terminal 8| with contact 18 through the following connectionsr wire 82, terminal plate 83, screws 84, bracket 14, hinge 12, armature 1| and contact 18. The screws 84, the plate 83 and the bracket 14 are insulated from the leg 6|a by

insulating plates

85 and 86 and insulating bushings 81. The contacts 69 and 10 are normally open, the armature 1| being biased away from the core head 11 by spring hinge 12, said movement being limited by a stop 88 which engages the armature 1|.

Referring to Fig. 5, the circuit of relay coil 16 is battery 88, terminal 8|, wire 82, plate 83,

Z-frame 14, core 15, coil 16,-wire 18, terminal 19,.

and horn button switch 98. when the switch 90 is closed, current will flow from the battery 80 to the horn relay and return through ground. The horn relay winding 16 being energized, the armature 1| will move toward the core head 11 to cause contact 10 to engage contact 69 thereby connecting the battery 80 with the horn magnet coil 65 through the following circuit: battery 80, terminal 8|, wire 82, plate 83, screws 84, bracket ll, hinge I2, armature H, contact I0, contact 69, contact bracket 58, terminal bracket 58, wire 68, coil 55, lead 64, connector plate 56, spring blade 54, contact 53, contact 5|, contact bracket 52, rivet 62, pedestal 6| and horn motor base 3| connected with ground. The horn magnet 65 being energized, the armature 6 will move toward the pole faces of the core 42 in order to move the diaphragm 23 toward the right as viewed in Fig. 2. During this movement the nut 50 will engage the insulated strip 55 which in turn engages the contact blade 54 carrying the contact 53 which will be separated from the contact 5| in order to temporarily break the circuit of the magnet coil 65. The magnetic flux of the horn motor dies away during the further motion of the diaphragm 23 toward the right. Finally movement of the diaphragm reverses and it moves toward the left somewhat beyond its normal position and suflicient to cause the contacts SI and 53 to close again, whereupon the cycle of operation is repeated as long as the horn button switch 90 remains closed.

From the foregoing'descriptionof'the construction and mode of operation of the combined horn motor and horn relay unit it is apparent that I have provided a simple and economical construe:

tion whereby the horn relay is combined with the horn motor at small additional cost, thereby eliminating the relay as a separate unit to be separately manufactured and mounted upon the automobile. 4

While the embodiment of the present invention as herein disclosed constitutes a preferred form, it is .to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. A horn structure including a base, a diaphragm supported on the base, an armature for operating the diaphragm; and an electromagnet for the armature mounted on the base, an U- iii) shaped support having the open end directed toward the base, the support and the base including means for supporting the former on the latter, a stack including interrupter means oper-.

ated by the armature and a stationary contact 55 adapted to connect the motor and circuit breaker for a relay, the closed end of the U and the stack including means for supporting the latter on the former, a relay including a core, coil, frame, and

' moving member bearing a contact, said movable member cooperating with the stationary contact, the core and coil being contained within the U,

and the horn structure including means for supporting the relay on the base.

breaker, said pedestal providing a stationary contact in addition to the circuit breaker, a relay contained with the U and including a core, coil, frame, and moving member bearing a contact, said movable member cooperating with the stationary contact, for controlling the circuit of the horn electromagnet, and means securing the relay core upon the pedestal.

3. A horn structure including a base, a diaphragm supported on the base, an armature for operating the diaphragm, and an electromagnet for the armature mounted on the base, a circuit breaker having a movable member actuated by movement of the armature, a U-shaped pedestal having the open end directed toward and mounted upon the base and supporting the circuit breaker, said pedestal providing a stationary contact in addition to the circuit breaker, a relay contained within the U and including a core, coil, frame, and moving member bearing a contact, said movable member cooperating with the stationary contact, for controlling the circuit of the horn electromagnet, insulating means carried by one leg of the pedestal for supporting the relay frame and core between the legs of the pedestal.

4. A horn structure including a base, a diaphragm supported on the base, an armature for operating the diaphragm, and an electromagnet for the armature mounted on the base, an U- shaped support having the open end directed toward the base, means for securing the support upon the base, a stack including interrupter means operated by the armature and a stationary contact for a relay, the closed end of the U and the stack including means for supporting the stack upon the support, a second stack in- 2. A horn structure including a base, a diamovement of the armature. a U-shaped pedestal having the open end directed toward and mountrelay armature,

ed upon the base and supporting the circuit eluding a terminal plate, a relay frame and insulators, one leg of said U-support and the said second stack including means for supporting the second stack upon the support, a relay including a core, 001], frame, and moving member bearing a contact, said movable member cooperating with the stationary contact, the relay core and coil being contained between the legs of the U and supported by the frame thereof from the second said stack, the horn structure including means for supporting the relay on the base.

5. In an electrically operated vibratory motor in which a movable part actuates a circuit breaker for periodically energizing and deepergizing the motor, the combination of a pedestal comprising a flatheaded arch for rigidly supporting the circuit breaker from its head, a relay with a current source, means for supporting the relay coil and core between the side members of the arch, including a bracket, means rigidly connecting the. bracket to a side member of the arch and electrically insulating the core from the pedestal, said bracket providing a flange extending across said one arch member, the armature of said relay being hinged to said flange and extending across .the arch and beyond the second side member of the pedestal, said circuit breaker including interrupter means and a stationary contact for the relay carried by the bridge of the arch, and adapted to connect the motor with the current source when engaged by the WILLIAM J. RADY.