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1. Plug «L». 2. Plug «R». 3. Foundation. 4. Casing. 5. Glass sleeve. 6. Electromagnet core base plate. 7. Anchor spring for direction indicator lamps. 8. Additional resistor. 9. Anchor stroke adjustment bracket 11 10. String. 11. Anchor lamps direction indicators. 12. Bracket for fastening the relay-breaker. 13. Bracket «he-ak-a 20 turn signal lamps. 14. Electromagnet core. 15. Anchor of a control lamp. 16. Bracket for adjusting the armature stroke 15. 17. Bracket for adjusting the tension of the armature spring 15. 18. Bracket for contact 21 of the control lamp. 19. Spring armature control lamp. 20. Contacts of lamps of indexes of turn. 21. Contacts of a control lamp. 22. Corps. 23. Fixed contacts. 24. Hub. 25. Moving contact. 26. Stock. 27. Rubber gasket. 28. Button. 29. Pushers. 30. Fixed contact. 31. Movable contact plate. 32. Foundation. 33. Key. 34. Switch mounting brackets. 35. Membrane. 36. Washer. 37. Anchor. 38. Yarmo. 39. Limiter. 40. Fixed contact stand. 41. Tip. 42. The lever of the switch of indexes of turn. 43. Headlight switch lever. 44. Plate for mounting levers. 45. The axis of the levers. 46. Spike of the turn signal switch lever. 47. Retaining ring. 48. Corps. 49. Horn switch contact. 50. Washer protrusion. 51. Drive washer. 52. Doggy. 53. Spring washer foot. 54. Spring washer. 55. Pawl spring. 56. Sector tooth. 57. Sector. 58. Switch pipe. 59. Movable contact light signaling. 60. Spring washer tendril. 61. Contact indicators of the left turn. 62. Contact indicators of the right turn. 63. Ball spring. 64. Ball retainer. 65. Contact high beam headlights. 66. Current source contact. 67. Contact low beam headlights. 68. Pin for turning on the light alarm. 69. Fixed contact light signaling. 70. Block of contacts of indexes of turn. 71. Headlight contact block. 72. Power supply wire to the horn switch. 73. Contact spring of the horn switch.
Relay-interrupter of direction indicators
Relay-breaker type RS-491, designed to receive an intermittent light signal of direction indicators, is mounted under the instrument panel on a bolt welded to the wall of the air intake box. Plugs and a support plate 6 with a core 14 welded to it, an electromagnet, are fixed on the getinax base 3. The beginning of the winding is soldered to the plug «L», and the end - to the bracket 13. The relay-breaker has two pairs of contacts. A pair (contacts 20) controls the operation of the direction indicators, and the other (contacts 21) - the operation of the turn signal indicator lamp. Brackets 13 and 18, pins 20 and 21 are insulated from core 14.
An additional resistor 8 of nichrome wire with a resistance of 10 ohms is connected in parallel with contacts 20. One of its ends is attached to the bracket 13, and the other passes through the glass sleeve 5 and is welded to the end of the armature 11. This section of the resistor is a tightly stretched string 10 in the cold state, pulling the armature away from the core. Anchor 15 is pulled away from the core by spring 19.
At the initial moment of turning on the direction indicators, the current flows to the plug «+» relay-breaker, passes through an additional resistor 8, then through the winding and from the plug «L» goes to turn signal switch (see chart on sheet «Light signaling lamps»). Since the current passes through the additional resistor, its value is relatively small and insufficient to cause the armatures to be attracted to the core and close the contacts. Therefore, the direction indicator lamps are lit with an incomplete glow, and the direction indicator indicator lamp is not lit. The current passing through the resistor heats it up. The string 10 lengthens, its tension weakens, and the armature 11 is attracted to the core, closing the contacts 20. Now the current flows through the contacts 20, bypassing the resistor 8. Its value increases sharply and the direction indicator lamps light up with full heat. Due to the increase in current, the magnetic attraction of the armature 15 to the core increases. It attracts and closes contacts 21. The turn signal indicator lamp lights up, the current to which comes from the plug «+», via core, armature 15, pins 21 and plug «R». Since the current stopped passing through resistor 8, it cools down, the tension of string 10 increases and it tears off armature 11 from the core, opening contacts 20. The current again passes through resistor 8, its value decreases sharply, armature 15 is pulled away from the core by spring 19, contacts 21 open and the control lamp goes out. The direction indicator lamps are again lit with a weak glow. The described cycle is repeated at a frequency of 60-120 times per minute.
Switch block
The P-134 type switch block, installed on VAZ-2101 and VAZ-2102 vehicles, consists of outdoor lighting and instrument lighting switches, as well as a wiper switch, combined in one housing. On the VAZ-2103 car, these switches have the same design, but are not in a common housing, but are separated into separate units. The switch block is fastened in the nest of the instrument panel lining with spring clips 34.
All parts of the switch block (excluding contacts and springs) made from plastics. Clamped in the elastic housing 22 are three bases 32 with fixed contacts and plugs. On the cylindrical ledges of the housing, keys 33 swing, having two tubular guides, in which there are pushers 29 with springs. The pushers press on the contact plates 31 and, depending on the position of the key, press the upper or lower end of the plate.
High Beam Relay
The RS-527 type relay, designed to turn on the high beam filaments of the VAZ-2103 headlights, is installed in the engine compartment on the top of the left wheel mudguard. A yoke 38 with a core and a plug is fixed on the getinax base 32 «30/51», post 40 fixed contact with plug «87» and plugs «85» and «86», to which the winding leads are soldered. A plastic frame with a winding is put on the core. Two plates are riveted to the yoke shelf: a steel spring plate on top, and a copper one under it to improve the electrical connection between the yoke and the moving contact. An armature 37 is riveted to these plates. The contacts are normally open and close when current flows through the relay winding. Brass stopper 39, mounted on the core, prevents excessive bending of the spring plate upwards.
Stop signal switch
The VK-412 type switch is mounted on the bracket of the clutch and brake pedals so that button 28 rests against the special platform of the pedal.
Fixed contacts 23 are riveted to the plastic housing 22, to which the movable contact 25 closing them is pressed with a spring. The body is rolled in a metal hub 24. The movable contact 25 is squeezed out from the stationary ones under the action of force transmitted through the button 28 and the plastic rod 26.
Light switch
Switches type VK-407 are fixed with screws on the door pillars. On a VAZ-2103 car, they are also used to turn on the front door opening signaling lights.
The switch has a steel stamped body 22 and a plastic button 28 with a metal tip 41 to which the wire is connected. When the button is pressed, the tip moves away from the body 22 and the circuit opens.
Reversing light switch
The switch type VK-415, used on VAZ-2103 vehicles, is screwed into the rear cover of the gearbox and its stem 26 rests against the stem of the reverse fork.
The plastic base 32 of the switch with contacts is rolled in a steel case 22. A rubber membrane 35 is installed between the case and the base, sealing the cavity of the contacts and protecting them from oil. Rod 26 acts on movable contact 25 through membrane 35 and pusher 29.
Turn signal and headlight switch
The P-135 type switch is mounted on the tube of the upper support of the steering shaft and is attached to it with two screws.
Two textolite pads 70 and 71 with copper contacts are installed on the upper part of the plastic case 48, and light signaling contacts 59 and 69 are riveted on the bottom side. Two levers 42 and 43 rotate on a steel axle 45 pressed into the housing. The upper end of the axle is held by a plate 44. Each lever has three fixed positions, which is provided by spring-loaded balls 64 included in the sockets of the housing 48.
The switch has a device for automatically turning off the direction indicators after the steering wheel is returned to its original position. The device consists of a plastic drive washer 51, a pawl 52, a spring washer 54 and a sector 57. The spring washer is installed above the sector and has two antennae 60 included in the recesses of the sector. Between the antennae there is a tab 53 bent down, in the hole of which the axis of the pawl 52 rotates. The plastic pawl is pulled down by the spring 55 and can move up and down. In addition, it can rotate on its own axis. Drive washer 51 has two protrusions included in the grooves of the steering wheel hub. Therefore, when the steering wheel is turned, the drive washer also turns with it.
The device works as follows. In the starting position (middle lever position 42) the antennae of the spring washer are in the recesses of the sector and the pawl 52 is pulled down by the spring. When the steering wheel is rotated, the lower protrusions 50 of the drive washer pass over the pawl without touching it.
When the lever 42 is turned to the upper or lower position, the spike 46 on the short end of the lever turns the sector 57. The antennae of the spring washer are pushed out of the recesses in the sector and the edge of the washer 54 together with the foot 53 rises, and the foot raises the pawl 52.
When the steering wheel is returned to its original position, one of the lower protrusions 50 of the drive washer touches the upper end of the pawl extended upward and rotates it around the axis. The lower end of the pawl rests against the tooth 56 of the sector and turns the sector, and with it the spike 46 and the lever 42 to its original position. The direction indicators turn off.