Engine, engine starter and housing assembly thereof
An engine, an engine starter and its housing assembly are provided. The housing assembly includes a gear mounting portion for mounting a driving gear and a switch mounting portion for mounting a solenoid switch. The switch mounting portion comprises a connecting portion and a cover body. The connecting portion is connected with the gear mounting portion and comprises a through structure for mounting the solenoid switch, the cover body covers a top end of the through structure. A wall of the connecting portion corresponding to the gear mounting portion defines an opening for mounting a shifting fork, which is in communication with the through structure.
1. An engine starter comprising:
a housing assembly comprising:
a gear mounting portion for mounting a driving gear; and
a switch mounting portion for mounting a solenoid switch, the switch mounting portion comprising:
a connecting portion connected with the gear mounting portion and comprising a through structure for mounting the solenoid switch, a wall of the connecting portion corresponding to the gear mounting portion defining an opening in communication with the through structure; and
a cover body covering a top end of the through structure; and
a shifting fork disposed in the opening;
wherein the shifting fork comprises a fork section and a positioning protrusion portion disposed at an end of the fork section;
the positioning protrusion portion includes an upper protrusion portion extending between a top of the positioning protrusion portion and a top surface of the fork section, the upper protrusion portion has a height D 1 , the positioning protrusion portion includes a lower protrusion portion extending m of the positioning protrusion portion and a bottom surface of the fork section, the lower protrusion portion has a height D 2 ;
the opening of the housing assembly comprises an upper slot engaging with the upper protrusion portion, a lower slot engaging with the lower protrusion portion, and a guide slot allowing the fork section to pass therethrough, the upper slot has a height H 1 , the lower slot has a height H 2 ;
wherein, D 1 ≤H 1 , D 2 ≤H 2 , min(H 1 , H 2 )<max(D 1 , D 2 ).
2. An engine comprising an engine starter, the engine starter comprising:
a housing assembly comprising:
a gear mounting portion for mounting a driving gear; and
a switch mounting portion for mounting a solenoid switch, the switch mounting portion comprising:
a connecting portion connected with the gear mounting portion and comprising a through structure for mounting the solenoid switch, a wall of the connecting portion corresponding to the gear mounting portion defining an opening in communication with the through structure; and
a cover body covering a top end of the through structure; and
a shifting fork disposed in the opening;
wherein the shifting fork comprises a fork section and a positioning protrusion portion disposed at an end of the fork section;
the positioning protrusion portion includes an upper protrusion portion extending between a top of the positioning protrusion portion and a top surface of the fork section, the upper protrusion portion has a height D 1 , the positioning protrusion portion includes a lower protrusion portion extending between a bottom of the positioning protrusion portion and a bottom surface of the fork section, the lower protrusion portion has a height D 2 ;
the opening of the housing assembly comprises an upper slot engaging with the upper protrusion portion, a lower slot engaging with the lower protrusion portion, and a guide slot allowing the fork section to pass therethrough, the upper slot has a height H 1 , the lower slot has a height H 2 ;
wherein, D 1 ≤H 1 , D 2 ≤H 2 , min(H 1 , H 2 )<max(D 1 , D 2 ).