US 2019/0160867 A1Published application

Hollow Caster Structure

OwnerShuen Hsuan Wanginventor

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Abstract

A hollow caster structure includes a base, a caster body pivotally connected with the base, a first wheel unit mounted on the caster body, and a second wheel unit mounted on the caster body. Each of the first wheel unit and the second wheel unit forms a viewing space. Thus, the viewing space of each of the first wheel unit and the second wheel unit provides a visible effect. In addition, the hollow caster structure has a lighter weight by provision of the viewing space. Further, the parts of the hollow caster structure have different colors which are visible from the viewing space.

Claims10

Dependent claims

A hollow caster structure comprising:

a base;
a caster body pivotally connected with the base;
a first wheel unit mounted on the caster body;
and
a second wheel unit mounted on the caster body;
wherein:
the base is provided with a mounting portion which has interior provided with a through hole;
the caster body is provided with an upright pivotally mounted on a bottom of the mounting portion of the base;
the caster body is provided with a transverse hole;
the first wheel unit includes a first wheel, a first cap mounted on the first wheel, and a second cap mounted on the first wheel;
the first wheel has a first central hole;
the first central hole has a first side provided with a first mounting recess and a second side provided with a second mounting recess;
the first cap is mounted in the first mounting recess;
the first cap has a first viewing hole aligning with the first central hole;
the first cap is provided with a first shaft hole which is located at an eccentric position deviating from a central point of the first viewing hole;
the second cap is mounted in the second mounting recess;
the second cap has a second viewing hole aligning with the first central hole;
the second cap is provided with a second shaft hole which is located at an eccentric position deviating from a central point of the second viewing hole;
the second wheel unit includes a second wheel, a third cap mounted on the second wheel, and a fourth cap mounted on the second wheel;
the second wheel has a second central hole;
the second central hole has a first side provided with a third mounting recess and a second side provided with a fourth mounting recess;
the third cap is mounted in the third mounting recess;
the third cap has a third viewing hole aligning with the second central hole;
the third cap is provided with a third shaft hole which is located at an eccentric position deviating from a central point of the third viewing hole;
the fourth cap is mounted in the fourth mounting recess;
the fourth cap has a fourth viewing hole aligning with the second central hole;
the fourth cap is provided with a fourth shaft hole which is located at an eccentric position deviating from a central point of the fourth viewing hole;
a shaft extends through the fourth shaft hole of the fourth cap, the third shaft hole of the third cap, the transverse hole of the caster body, the second shaft hole of the second cap and the first shaft hole of the first cap;
and
a screw member is screwed onto a distal end of the shaft, so that the caster body, the first wheel unit and the second wheel unit are combined together.

27 more elements

Dependencies are inferred from the claim text.

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Abstract

A hollow caster structure comprising:

a base;
a caster body pivotally connected with the base;
a first wheel unit mounted on the caster body;
and
a second wheel unit mounted on the caster body;
wherein:
the base is provided with a mounting portion which has interior provided with a through hole;
the caster body is provided with an upright pivotally mounted on a bottom of the mounting portion of the base;
the caster body is provided with a transverse hole;
the first wheel unit includes a first wheel, a first cap mounted on the first wheel, and a second cap mounted on the first wheel;
the first wheel has a first central hole;
the first central hole has a first side provided with a first mounting recess and a second side provided with a second mounting recess;
the first cap is mounted in the first mounting recess;
the first cap has a first viewing hole aligning with the first central hole;
the first cap is provided with a first shaft hole which is located at an eccentric position deviating from a central point of the first viewing hole;
the second cap is mounted in the second mounting recess;
the second cap has a second viewing hole aligning with the first central hole;
the second cap is provided with a second shaft hole which is located at an eccentric position deviating from a central point of the second viewing hole;
the second wheel unit includes a second wheel, a third cap mounted on the second wheel, and a fourth cap mounted on the second wheel;
the second wheel has a second central hole;
the second central hole has a first side provided with a third mounting recess and a second side provided with a fourth mounting recess;
the third cap is mounted in the third mounting recess;
the third cap has a third viewing hole aligning with the second central hole;
the third cap is provided with a third shaft hole which is located at an eccentric position deviating from a central point of the third viewing hole;
the fourth cap is mounted in the fourth mounting recess;
the fourth cap has a fourth viewing hole aligning with the second central hole;
the fourth cap is provided with a fourth shaft hole which is located at an eccentric position deviating from a central point of the fourth viewing hole;
a shaft extends through the fourth shaft hole of the fourth cap, the third shaft hole of the third cap, the transverse hole of the caster body, the second shaft hole of the second cap and the first shaft hole of the first cap;
and
a screw member is screwed onto a distal end of the shaft, so that the caster body, the first wheel unit and the second wheel unit are combined together.

27 more elements