Work machine having main pole
AssigneeMakita Corporation
InventorsYukihiko Yamada, Shinya Kojima, Akihiro Nomura
Life of this patent
Estimating the term…
Abstract
A work machine includes a main pole internally including a rotation shaft, a tool unit located at one end of the main pole, and a power unit located at another end of the main pole. The main pole includes a first partial pole, a second partial pole and a joint member that joints them to each other. The first partial pole includes a positioning member. The joint member includes a positioning hole configured to engage with the positioning member and a guide groove extending from the positioning hole. The guide groove is configured to guide the positioning member to the positioning hole and to allow the positioning member to escape in at least a section thereof.
Claims7
A work machine, comprising:
- a main pole internally comprising a rotation shaft;
- a tool unit located at one end of the main pole and configured to hold a tool connected to the rotation shaft;
- and
- a power unit located at another end of the main pole and comprising a prime mover configured to drive the rotation shaft;
- wherein the main pole comprises a first partial pole, a second partial pole and a joint member attached to the second partial pole,
- the joint member comprises a through hole configured to accept insertion of the first partial pole from one side, wherein the first partial pole is configured to be removably inserted to the through hole;
- the first partial pole comprises a positioning member configured to be biased toward the joint member,
- the joint member comprises a positioning hole configured to engage with the positioning member and a guide groove extending from the positioning hole toward the one side of the through hole and configured to guide the positioning member to the positioning hole, and
- at least a section of the guide groove is an escapable section configured to allow the positioning member to escape from the guide groove.
A work machine, comprising:
- a main pole internally comprising a rotation shaft;
- a tool unit located at one end of the main pole and configured to hold a tool connected to the rotation shaft;
- and
- a power unit located at another end of the main pole and comprising a prime mover configured to drive the rotation shaft;
- wherein the main pole comprises a first partial pole, a second partial pole and a joint member attached to the second partial pole,
- the joint member comprises a through hole configured to accept insertion of the first partial pole from one side, wherein the first partial pole is configured to be removably inserted to the through hole;
- the joint member comprises a positioning member configured to be biased toward the first partial pole,
- the first partial pole comprises a positioning hole configured to engage with the positioning member and a guide groove extending from the positioning hole toward an end of the first partial pole and configured to guide the positioning member to the positioning hole, and
- at least a section of the guide groove is an escapable section configured to allow the positioning member to escape from the guide groove.
A joint member for jointing a first partial pole and a second partial pole, comprising:
- a through hole configured to accept insertion of the first partial pole from one side;
- a positioning hole configured to engage with a positioning member provided to the first partial pole;
- and
- a guide groove extending from the positioning hole toward the one side of the through hole and configured to guide the positioning member to the positioning hole,
- wherein at least a section of the guide groove is an escapable section configured to allow the positioning member to escape from the guide groove.
Dependencies are inferred from the claim text.