1. A motor element comprising:
an elongated shank;
a hollow drive shaft rotatably mounted in the elongated shank;
a collet chuck for a tool arranged in a front end region of the hollow drive shaft; and
a coupling that connects the collet chuck to a rod that extends rearwardly, wherein the rod is pretensioned rearwardly or frontwardly by a spring on the rod and can be displaced frontwardly or rearwardly against the spring by an actuating mechanism, the spring being rearwardly stayed on the rod and being frontwardly stayed behind an inner first shoulder of the drive shaft,
wherein one or more spring arms are arranged at a front end region of the spring, the one or more spring arms are elastically pretensioned radially outwards and spring out behind the inner first shoulder when the rod and spring are plugged into a receiving hole of the drive shaft front end region and the one or more spring arms are seated in a position located behind the inner first shoulder, and the spring is rearwardly stayed on the rod against a bushing affixed to the rod, the spring pretensioning the rod toward the rear due to an axial staying of the spring arms on the inner first shoulder of the drive shaft.
2. Motor element according to claim 1, wherein the inner first shoulder is formed by an annular groove.
3. Motor element according to claim 1, wherein a plurality of spring arms are provided and arranged so that the spring arms are distributed over a periphery of a guide bushing.
4. Motor element according to claim 1, wherein each of the one or more spring arms includes a front end which, in a relaxed state, takes up a radial measure with regard to a longitudinal central axis of the hollow drive shaft that is greater than a radial measure of a receiving hole of the hollow drive shaft that is cylindrical over an entire length of the hollow drive shaft.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A powder container comprising:
a powder containing unit that contains powder and at least a part of which is deformable;
a discharging unit that receives the powder supplied from an opening of the powder containing unit via an inlet arranged on the discharging unit and discharges the powder to a supply destination;
an elastic member that is arranged on a periphery of the inlet of the discharging unit; and
a seal member that is arranged on the powder containing unit and seals the opening, wherein
the seal member is sandwiched between the discharging unit and the powder containing unit via the elastic member such that the seal member is removable from between the discharging unit and the powder containing unit.
2. The powder container according to claim 1, wherein
the seal member has a hole portion, the hole portion being used for gripping, on an exposed portion of the seal member that is exposed when the seal member is sandwiched between the discharging unit and the powder containing unit.
3. The powder container according to claim 1, wherein
the powder containing unit and the discharging unit are separable from each other.
4. The powder container according to claim 3, wherein
a direction in which the seal member is removed from between the discharging unit and the powder containing unit is the same as a direction in which the powder containing unit is detached from the discharging unit.
5. The powder container according to claim 3, further comprising
a blocking member that is inserted between the discharging unit and the powder containing unit and blocks the inlet of the discharging unit.
6. The powder container according to claim 5, wherein
the blocking member has a hole portion, the hole portion being used for gripping, on an exposed portion of the blocking member that is exposed when the blocking member is inserted between the discharging unit and the powder containing unit.
7. The powder container according to claim 6, wherein
when the seal member is sandwiched between the discharging unit and the powder containing unit and the blocking member is inserted between the discharging unit and the powder containing unit, the hole portion of the seal member and the hole portion of the blocking member are located at the same position.
8. The powder container according to claim 3, wherein
the powder containing unit is configured to be attached to and detached from the discharging unit from above.
9. The powder container according to claim 3, wherein
the powder containing unit is attached to and detached from the discharging unit from below.
10. A powder conveying apparatus comprising:
a powder containing unit that contains powder and at least a part of which is deformable;
a discharging unit that receives the powder supplied from an opening of the powder containing unit via an inlet arranged on the discharging unit and discharges the powder to a supply destination;
a delivery member that moves toward the discharging unit while pushing a deformable portion of the powder containing unit inward, thereby delivering the powder to the discharging unit; and
the powder container according to claim 1.
11. An image forming apparatus comprising the powder conveying apparatus according to claim 10.