Impact tool
To reduce size increase, an impact tool includes a motor, a spindle located frontward from the motor and rotatable by the motor, a hammer supported by the spindle, an anvil strikable by the hammer in a rotation direction and having an insertion hole extending rearward from a front end of the anvil, a locking member supported by the anvil and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool, and a bit sleeve surrounding the anvil. The bit sleeve is movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member. The bit sleeve is at least partly between the hammer and the anvil in a radial direction.
1. An impact tool, comprising:
a motor;
a spindle located frontward from the motor and rotatable by the motor;
a hammer supported by the spindle;
an anvil strikable by the hammer in a rotation direction, the anvil having an insertion hole extending rearward from a front end of the anvil;
a locking member supported by the anvil and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool; and
a bit sleeve surrounding the anvil, the bit sleeve being movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member, the bit sleeve being at least partly between the hammer and the anvil in a radial direction.
2. The impact tool according to claim 1 , wherein
the hammer and the locking member overlap each other in an axial direction.
3. The impact tool according to claim 1 , further comprising:
a bearing supporting the anvil in a rotatable manner,
wherein the bit sleeve is located rearward from the bearing.
4. An impact tool, comprising:
a motor;
a spindle located frontward from the motor and rotatable by the motor;
a hammer supported by the spindle;
an anvil strikable by the hammer in a rotation direction, the anvil having an insertion hole extending rearward from a front end of the anvil;
a bearing supporting the anvil in a rotatable manner;
a locking member supported by the anvil and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool;
a bit sleeve surrounding the anvil, the bit sleeve being movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member, the bit sleeve being located rearward from the bearing; and
a hammer case holding the bearing,
wherein the bit sleeve is accommodated rearward of the bearing in the hammer case.
5. The impact tool according to claim 3 , wherein
the locking member is located rearward from the bearing.
6. The impact tool according to claim 4 , wherein
the hammer case accommodates at least a part of the anvil.
7. The impact tool according to claim 4 , wherein
the locking member is accommodated in the hammer case.
8. The impact tool according to claim 4 , further comprising:
an operable member operable to move the bit sleeve; and
a transmission configured to transmit a force applied to the operable member to the bit sleeve,
wherein the operable member is located outside the hammer case.
9. The impact tool according to claim 1 , wherein
the anvil has a support recess on an outer surface of the anvil,
the locking member includes a ball supported in the support recess,
the anvil has a through-hole connecting an inner surface of the support recess to an inner surface of the insertion hole,
the locking member is at least partly receivable in a groove on a side surface of the tip tool through the through-hole to lock the tip tool, and
the locking position includes a position at which the locking member is at least partly received in the groove.
10. The impact tool according to claim 2 , further comprising:
a bearing supporting the anvil in a rotatable manner,
wherein the bit sleeve is located rearward from the bearing.
11. The impact tool according to claim 4 , wherein
the locking member is located rearward from the bearing.
12. The impact tool according to claim 5 , further comprising:
a hammer case holding the bearing,
wherein the bit sleeve is accommodated in the hammer case.
13. The impact tool according to claim 6 , wherein
the locking member is accommodated in the hammer case.
14. The impact tool according to claim 6 , further comprising:
an operable member operable to move the bit sleeve; and
a transmission configured to transmit a force applied to the operable member to the bit sleeve,
wherein the operable member is located outside the hammer case.
15. The impact tool according to claim 7 , further comprising:
an operable member operable to move the bit sleeve; and
a transmission configured to transmit a force applied to the operable member to the bit sleeve,
wherein the operable member is located outside the hammer case.
16. The impact tool according to claim 2 , wherein
the anvil has a support recess on an outer surface of the anvil,
the locking member includes a ball supported in the support recess,
the anvil has a through-hole connecting an inner surface of the support recess to an inner surface of the insertion hole,
the locking member is at least partly receivable in a groove on a side surface of the tip tool through the through-hole to lock the tip tool, and
the locking position includes a position at which the locking member is at least partly received in the groove.