Three-button order switch

Three-button order switch

  • CN 1,114,930 C
  • Filed: 07/06/1998
  • Issued: 07/16/2003
  • Est. Priority Date: 07/06/1998
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of three button order switch, has forward button, stop button, reverse button, switch base and be arranged on three buttons with the mutual interlocking gear between the switch base, wherein switch base is provided with fixed contact, along ifft circuit and two adjustable shelfs that are inlaid in the chute, and adjustable shelf is provided with movable contact, contact holddown spring and adjustable shelf back-moving spring, it is characterized in that:

  • described mutual interlocking gear has the base plate (10) that is superimposed together, location-plate and lockplate (11), and location-plate and lockplate (11) are inlaid in the same slideway (12) on its seat board (10), the centre of base plate (10) is provided with the chute (14) that inserts for the stop button push rod (13) that is fixed on the stop button (2), and stop button push rod (13) is provided with left thrust inclined-plane (15) and right thrust inclined-plane (16), the left side of base plate (10), the right side also is provided with respectively for being fixed on forward button (1) and the forward thumb-button push rod (17) of reverse button (3) and the guide groove (19 that reverse button push rod (18) inserts,

         20), location-plate comprises left location-plate (21) and right location-plate (22), be respectively equipped with the guide groove (23 that inserts for thumb-button push rod (17) forward or reverse button push rod (18) on it,

         24) and two ends be supported on base plate (10) and location-plate (21 respectively,

         22) compression spring (25,26) make location-plate (21,22) respectively with the left thrust inclined-plane (15) and right thrust inclined-plane (16) snug fit of button push rod (13) two, also be provided with guide groove (27 on the lockplate (11) for thumb-button push rod (17) forward and reverse button push rod (18) insertion,

         28) and for the through hole (29) that stretches into of stop button push rod (13), in addition, forward also be provided with when moving down location-plate (21 on thumb-button push rod (17) and the reverse button push rod (18),

         22) and the thrust inclined-plane (30 passed, lockplate (11) outside,

         31) and then allow location-plate (21,22) location notch (32 that snaps in of rollback,

         33), suit stop button back-moving spring (34) then on the stop button push rod (13), when left location-plate (21) or right location-plate (22) snapped in location notch (32) on thumb-button push rod (17) forward or the reverse button push rod (18) or (33), the right side guide groove (28) on the lockplate (11) or the external groove sidevall (36) of left side guide groove (27) or (35) offseted with reverse button push rod (18) or the outer spigot surface (38) or (37) that forward are positioned at thrust inclined-plane (31) or (30) below on the thumb-button push rod (17).

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