JP2020163655A - Lathe unit and attachment member for lathe - Google Patents

Abstract

To provide a technique capable of performing support in such a manner that an operation using a lathe can be easily progressed even if the potter is not an expert.SOLUTION: A lathe unit U1 comprises: a lathe 1 having a top plate 11 provided freely rotatably around a rotary axis A; and an attachment member 2 freely attachable/detachable to the top plate 11. The attachment member 2 includes: a fixing part 22 that is annular in plane view and performs fixing in such a manner that the attachment member 2 is not rotated to the top plate 11, in a fitting state where the same is fitted to the top plate 11, by abutting the inner circumferential face against the side face of the top plate 11; and a step formation part 21 that forms a step T for positioning that is circular in plane view and is concentric with the rotary axis A in the fitting state.SELECTED DRAWING: Figure 1

Description

The present invention relates to a potter's wheel unit used in pottery and an attachment member for the potter's wheel.

A common potter's wheel used in pottery is a device provided so that a circular top plate can rotate smoothly around a vertical axis passing through its center. Among such devices, those having a drive unit for rotating the top plate are called "electric potter's wheel" and the like, and those without such a drive unit are called "hand-cranked potter's wheel" and the like. For example, Patent Document 1 discloses a technique for electrically rotating a top plate.

Generally, the potter's wheel is used for the work of forming clay (molding work), the work of shaving the formed clay when it has dried to some extent (shaving work), and the like. For example, in the molding operation, the clay can be molded into a rotating body shape by rotating the top plate of the potter's wheel and pressing the clay placed on the top plate with a finger to form the clay. Further, for example, in the shaving work, the potter's wheel can shave the surface of the work placed on the potter's wheel little by little while rotating the top plate of the potter's wheel.

JP-A-2010-89286

In the molding work using the potter's wheel, if the clay is not placed coaxially with the rotation axis of the top plate (so-called "centering"), the clay can be shaped into a rotating body. Can not. However, since skillful skill is required for this centering, it has not been easy for an inexperienced potter to shape the clay into a rotating body as desired. In addition, at the site of pottery making work for persons with disabilities, which is carried out to support independence, it was often a burden for potters to find it difficult to center.

In addition, in the shaving work using the potter's wheel, it is necessary to install the work coaxially with the rotation axis of the top plate before actually shaving, and if this is not done properly, it will become a rotating body. It is not possible to carve out a neat shape. However, it was not easy for an inexperienced potter to place the work coaxially with the axis of rotation of the top plate, and it often took time.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a technique capable of assisting a person who is not a skilled potter's wheel to easily proceed with a work using a potter's wheel.

The present invention has taken the following measures in order to achieve the above object.

That is, the present invention is a potter's wheel unit.
A potter's wheel with a top plate that is rotatably provided around the axis of rotation,
An attachment member that can be attached to and detached from the top plate,
With
The attachment member
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. Department and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
It is characterized by having.

According to this configuration, the attachment member attached to the top plate forms a step for positioning in a circular shape in a plan view, which is concentric with the rotation axis of the top plate. If this positioning step is used as a guide, the clay or the work will naturally be placed coaxially with the rotation axis of the top plate, so even non-skilled potters can easily proceed with the work using the potter's wheel. be able to.

In addition, the potter's wheel unit according to another aspect
A potter's wheel with a top plate that is rotatably provided around the axis of rotation,
A dove receiving member that is removable from the top plate, has a tub shape, and has a dummy top plate provided on the upper surface of the bottom plate.
An attachment member that can be attached to and detached from the dummy top plate,
With
The dove receiving member
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the dove receiving member so as not to rotate with respect to the top plate. Dove receiving side fixing part,
With
The attachment member
In the mounted state where this is attached to the dummy top plate, the inner peripheral surface abuts on the side surface of the dummy top plate to fix the attachment member so as not to rotate with respect to the dummy top plate. An annular fixing part and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
It is characterized by having.

Also in this configuration, as in the above embodiment, the attachment member attached to the dummy top plate forms a plan-viewing circular positioning step concentric with the rotation axis of the dummy top plate. Even if you are not a potter, you can easily proceed with the work using the potter's wheel. Further, according to this configuration, the dove receiving member attached to the top plate can receive mud, water, etc. scattered in the pottery making work.

In addition, the potter's wheel unit according to yet another aspect is
An electric potter's wheel including a top plate rotatably provided around a rotation shaft and a drive unit for rotationally driving the top plate.
A hand-cranked potter's wheel that has a top plate that is rotatably provided around the rotation axis and does not have a drive unit that drives the top plate to rotate.
Two attachment members, one of which is removable to the top plate of the electric potter's wheel and the other is removable to the top plate of the hand-cranked potter's wheel.
With
Each of the two attachment members
In the mounted state where this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. When,
In the mounted state, a step forming portion forming a plan-viewing circular positioning step concentric with the rotation axis of the top plate, and a step forming portion.
With
The rotational movement of the top plate of the electric potter's wheel, which is rotationally driven by the drive unit, is transmitted through the attachment member attached to the top plate and the attachment member attached to the top plate of the hand-cranked potter's wheel. The top plate is configured to be rotationally driven by being transmitted to the top plate of the above.
It is characterized by that.

Also in this configuration, as in the above embodiment, the attachment members attached to the top plates of the electric potter's wheel and the hand-cranked potter's wheel form a step for positioning in a circular shape in a plan view concentric with the rotation axis of the top plate. Therefore, even if you are not a skilled potter's wheel, you can easily proceed with the work using the potter's wheel. In addition, according to this configuration, the driving force of the electric potter's wheel is transmitted to the top plate of the hand-cranked potter's wheel via the two attachment members, which is driven to rotate. There is no need to rotate with.

Preferably, in the potter's wheel unit according to each of the above aspects,
The step forming portion
An annular member in a plan view whose inner diameter is smaller than the diameter of the top plate.
It is characterized by that.

According to this configuration, the configuration of the attachment member can be simplified.

Preferably, in the potter's wheel unit according to each of the above aspects,
The step forming portion
Flat base plate and
An annular convex portion in a plan view provided on the upper surface of the base plate, and
It is characterized by having.

According to this configuration, it is possible to put clay and works on the base plate and work with the potter's wheel here, and when the work is finished, remove the attachment member with the clay and works on it and move it together with the attachment member. Can be made to. Therefore, the potter's wheel can be quickly used for the next work, and the potter's wheel usage efficiency is improved.

Preferably, in the potter's wheel unit according to each of the above aspects,
The step forming portion
Flat base plate and
An annular groove in a plan view provided on the upper surface of the base plate,
It is characterized by having.

Also in this configuration, as in the above configuration, the potter's wheel can be used more efficiently by providing the base plate. Further, according to this configuration, for example, using an attachment member such that the outer diameter of the groove portion substantially matches the outer diameter of the rim portion of the work, the rim portion thereof is accommodated in the groove portion with the work facing downward. If placed in, the work will naturally be placed coaxially with the axis of rotation of the top plate. In such a state, if the hill or the like is carved while rotating the top plate, the hill or the like having a shape arranged in a rotating body can be carved.

In addition, in the potter's wheel unit,
The step forming portion
A convex portion provided on the upper surface of the base plate and surrounded by the groove portion,
It is characterized by having.

According to this configuration, for example, when carving out a hill of a work such as a flat plate, when the work is turned over so that the rim portion thereof is accommodated in the groove portion, it is provided in the area surrounded by the groove portion. The convex part supports the work so that it will not be crushed. Therefore, it is unlikely that the work will be crushed while shaving the hill.

The present invention also covers attachment members. That is, the attachment member is
It is an attachment member that can be attached to and detached from the top plate of the potter's wheel.
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. Department and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
It is characterized by having.

According to this configuration, by attaching the attachment member to the top plate, a plan-viewing circular positioning step that is concentric with the rotation axis of the top plate is formed. If this positioning step is used as a guide, the clay or the work will naturally be placed coaxially with the rotation axis of the top plate, so even non-skilled potters can easily proceed with the work using the potter's wheel. be able to.

According to the present invention, even a non-skilled potter's wheel can easily proceed with the work using the potter's wheel.

The figure which shows the structure of the potter's wheel unit which concerns on 1st Embodiment. The figure which shows the structure of the attachment member. The figure which shows the structure of the potter's wheel unit which concerns on 2nd Embodiment. The figure which shows the structure of the potter's wheel unit which concerns on 3rd Embodiment. The figure which shows an example of the usage mode of the potter's wheel unit. The figure which shows the structure of the attachment member which concerns on 1st modification. The figure which shows the structure of the attachment member which concerns on the 2nd modification. The figure which shows the structure of the attachment member which concerns on 3rd modification. The figure which shows the structure of the attachment member which concerns on 4th modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1. First Embodiment>
<1-1. Potter's wheel unit configuration>
The configuration of the potter's wheel unit according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing the configuration of the potter's wheel unit U1 according to the first embodiment. FIG. 2 is a diagram showing a configuration of an attachment member 2 included in the potter's wheel unit U1. However, FIG. 2A shows a side sectional view of the attachment member 2 in a state of being removed from the target top plate D, and FIG. 2B shows a state of being attached to the target top plate D. A top view and a side sectional view of the attachment member 2 of the above are shown.

The potter's wheel unit U1 includes an electric potter's wheel 1 and an attachment member 2.

The electric potter's wheel 1 includes a flat plate-shaped top plate 11 having a circular shape in a plan view and flat upper and lower surfaces. The top plate 11 is supported on the support column 12 in a posture in which the upper surface is substantially horizontal. The support column 12 is arranged so that its axis extends vertically and the axis passes through the center of the top plate 11 in a plan view. A drive unit 13 is connected to the lower end of the support column 12. The drive unit 13 is a mechanism for rotating the support column 12 around its axis to rotate the top plate 11 around a vertical rotation axis A passing through the center of the plan view, and drives a motor or the like. Consists of including the source. The drive unit 13 is housed in a housing 14, and an operation panel 140 for receiving operations from the user is provided on the front surface of the housing 14. The operation panel 140 is provided with a power switch 141, an adjustment knob 142 for adjusting the rotation speed of the top plate 11, a rotation start switch 143 for the top plate 11, a changeover switch 144 for the rotation direction of the top plate 11, and the like. Further, the housing 14 is provided with an outlet jack 145 for supplying power.

In such a configuration, when the drive unit 13 rotates and drives the support column 12 around its axis, the top plate 11 rotates smoothly around the rotation axis A. The potter can switch the rotation start / end, rotation speed, rotation direction, etc. of the top plate 11 by performing various operations via the operation panel 140.

The attachment member 2 is a member that can be attached to and detached from the top plate (target top plate) D to be attached and is used by being attached to the target top plate D, and includes a step forming portion 21 and a fixing portion 22. .. However, in this embodiment, the top plate 11 of the electric potter's wheel 1 is the target top plate D. That is, in this embodiment, the attachment member 2 is used by being attached to the top plate 11 of the electric potter's wheel 1.

The step forming portion 21 is a flat plate-like member having an annular shape in a plan view and flat upper and lower surfaces, and has an inner diameter smaller than the diameter of the target top plate D and an outer diameter larger than the diameter of the target top plate D. It is supposed to be.

The fixed portion 22 is a flat plate-shaped member having an annular shape in a plan view and flat upper and lower surfaces, the inner diameter is substantially the same as the diameter of the target top plate D, and the outer diameter is the outer diameter of the step forming portion 21. It is almost the same. The peripheral surface (inner peripheral surface) on the inner diameter side of the fixed portion 22 is made of a material having a large friction coefficient (for example, rubber) so that this is a surface that is not sufficiently slippery (that is, a surface having a sufficiently large frictional force). A coating layer is formed. The fixing portion 22 is arranged at a position concentric with the step forming portion 21 in a plan view, and is fixed to the lower surface of the step forming portion 21 at that position. This fixing is performed by welding, screwing, adhesion using an adhesive material, or the like. However, the fixing portion 22 may be integrally formed with the step forming portion 21.

<1-2. How to use the potter's wheel unit>
The usage mode of the potter's wheel unit U1 will be described with reference to FIGS. 1 and 2.

When using the potter's wheel unit U1, the potter's wheel first attaches the attachment member 2 to the target top plate D (here, the top plate 11 of the potter's wheel 1). Specifically, the potter arranges the attachment member 2 at a position concentric with the top plate 11 in a plan view, and superimposes the attachment member 2 on the top plate 11 from above. Then, the attachment member 2 is pressed downward so that the top plate 11 is housed inside the fixing portion 22. As a result, the attachment member 2 is attached to the top plate 11 (attached state) (FIGS. 1 (b) and 2 (b)).

In this mounting state, the inner peripheral surface of the fixing portion 22 is in contact with the entire circumference of the side surface of the top plate 11. As a result, the attachment member 2 is arranged coaxially with the rotation axis A of the top plate 11 and is positioned at that position. Further, the attachment member 2 is fixed so as not to rotate with respect to the top plate 11 due to the frictional force generated between the inner peripheral surface of the fixing portion 22 and the side surface of the top plate 11.

Further, in this mounting state, the entire surface of the top plate 11 except for the circular region Q concentric with the rotation axis A is covered by the step forming portion 21, and along the circumference of the circular region Q, A step T corresponding to the thickness d of the step forming portion 21 is formed. That is, a step T having a circular shape in a plan view that is concentric with the rotation axis A is formed.

For example, when the molding work is performed using the electric potter's wheel 1, the potter puts clay inside the step T, rotates the top plate 11, and presses the clay with his fingers to freely shape the clay. At this time, if the step T is used as a guide, the clay is naturally placed coaxially with the rotation axis A of the top plate 11 (centered state), so even if the person is not a skilled potter, the clay Can be shaped into a rotating body as desired.

Further, for example, when the electric potter's wheel 1 is used for shaving work, if the attachment member 2 is used so that the diameter of the step T substantially matches the outer diameter of the bottom portion of the work, the bottom portion of the work is made to follow the step T. By simply arranging the work in this way, the work is naturally placed coaxially with the rotation axis A of the top plate 11. If the work is carved while rotating the top plate 11 in such a state, the rim portion and the side surface portion of the work can be carved into a shape arranged in a rotating body shape. Similarly, if the attachment member 2 is used so that the diameter of the step T substantially matches the outer diameter of the rim portion of the work, the work is simply arranged so as to face downward and the rim portion is along the step T. Then, the work is naturally placed coaxially with the rotation axis A of the top plate 11. If the hill is carved while rotating the top plate 11 in such a state, the hill having a shape arranged in a rotating body can be carved.

<1-3. Effect>
The potter's wheel unit U1 according to this embodiment is detachable from the potter's wheel 1 having a top plate 11 rotatably provided around the rotation axis A and the target top plate D (top plate 11 in this embodiment). The attachment member 2 is provided. Then, the attachment member 2 includes a fixing portion 22 and a step forming portion 21. The fixing portion 22 has an annular shape in a plan view, and when the inner peripheral surface abuts on the side surface of the target top plate D in the mounted state, the attachment member 2 is fixed so as not to rotate with respect to the target top plate D. Further, the step forming portion 21 forms a step (positioning step) T having a circular shape in a plan view, which is concentric with the rotation axis A in the mounted state.

According to this configuration, the attachment member 2 attached to the top plate 11 forms a positioning step T having a circular shape in a plan view, which is concentric with the rotation axis A of the top plate 11. If this positioning step T is used as a guide, the clay or the work will naturally be placed coaxially with the rotation axis A of the top plate 11, so even if you are not a skilled potter, you used the electric potter's wheel 1. The work can be easily carried out.

Further, in the attachment member 2 according to this embodiment, the step forming portion 21 is a member having an annular shape in a plan view in which the inner diameter is smaller than the diameter of the target top plate D. According to this configuration, the configuration of the attachment member 2 can be simplified.

<2. Second Embodiment>
<1-1. Potter's wheel unit configuration>
The configuration of the potter's wheel unit according to the second embodiment will be described with reference to FIG. FIG. 3 is a perspective view showing the configuration of the potter's wheel unit U2 according to the second embodiment. In the following, the elements described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The potter's wheel unit U2 includes an electric potter's wheel 1, an attachment member 2, and a dove receiving member 3.

The configuration of the electric potter's wheel 1 and the attachment member 2 is the same as that of the first embodiment. However, in this embodiment, the attachment member 2 is used by being attached to the dummy top plate 32 of the dove receiving member 3 (that is, the dummy top plate 32 is the target top plate D).

The dove receiving member 3 is a member that is detachable from the top plate 11 of the electric potter's wheel 1 and is used by being attached to the top plate 11, and is provided on the tub-shaped main body 31 and the upper surface of the bottom plate 311 thereof. A dummy top plate 32 and a dove receiving side fixing portion 33 provided on the lower surface of the bottom plate 311 are provided.

The main body 31 includes a bottom plate 311 having a circular shape in a plan view that is sufficiently larger than the top plate 11 of the electric potter's wheel 1, and a side wall 312 that rises from the peripheral edge thereof while expanding its diameter, and has a tub shape as a whole.

The dummy top plate 32 is a flat plate-shaped iron member (that is, an iron plate) having a circular shape in a plan view and flat upper and lower surfaces, and has the same diameter as the top plate 11. The dummy top plate 32 is arranged at a position concentric with the bottom plate 311 in a plan view, and is fixed to the upper surface of the bottom plate 311 at that position. This fixing is performed by welding, screwing, adhesion using an adhesive material, or the like. However, the dummy top plate 32 may be integrally formed with the bottom plate 311.

The dove receiving side fixing portion 33 is a flat plate-like member having an annular shape in a plan view and flat upper and lower surfaces, and its inner diameter is substantially the same as the diameter of the target top plate D. A coating layer made of a material having a large friction coefficient (for example, rubber) is formed on the inner peripheral surface of the dove receiving side fixing portion 33 so that the surface is sufficiently non-slippery. The dove receiving side fixing portion 33 is arranged at a position concentric with the bottom plate 311 in a plan view, and is fixed to the lower surface of the bottom plate 311 at that position. This fixing is performed by welding, screwing, adhesion using an adhesive material, or the like. However, the dove receiving side fixing portion 33 may be integrally formed with the bottom plate 311.

<1-2. How to use the potter's wheel unit>
The usage mode of the potter's wheel unit U2 will be described with reference to FIG.

When using the potter's wheel unit U2, the potter's wheel attaches the dove receiving member 3 to the top plate 11 and attaches the attachment member 2 to the dummy top plate 32. Specifically, the potter arranges the dove receiving member 3 at a position concentric with the top plate 11 in a plan view, and superimposes the dove receiving member 3 on the top plate 11 from above. Then, the dove receiving member 3 is pressed downward so that the top plate 11 is housed inside the dove receiving side fixing portion 33. As a result, the dove receiving member 3 is attached to the top plate 11. Further, the potter arranges the attachment member 2 at a position concentric with the dummy top plate 32 in a plan view, and superimposes the attachment member 2 on the dummy top plate 32 from above. Then, the attachment member 2 is pressed downward so that the dummy top plate 32 is housed inside the fixing portion 22. As a result, the attachment member 2 is attached to the dummy top plate 32 (attached state).

In the state where the dove receiving member 3 is attached to the top plate 11, the inner peripheral surface of the dove receiving side fixing portion 33 is in contact with the entire circumference of the side surface of the top plate 11. As a result, the dove receiving member 3 is arranged coaxially with the rotation axis A of the top plate 11, and the position is regulated at that position. Further, the dove receiving member 3 is fixed so as not to rotate with respect to the top plate 11 by the frictional force generated between the inner peripheral surface of the dove receiving side fixing portion 33 and the side surface of the top plate 11.

Further, in the attached state in which the attachment member 2 is attached to the dummy top plate 32, the attachment member 2 is arranged coaxially with the rotation axis of the dummy top plate 32 (that is, the rotation axis A of the top plate 11), and the position thereof. Position is restricted to. Further, the attachment member 2 is fixed so as not to rotate with respect to the dummy top plate 32 (and by extension, the top plate 11) due to the frictional force generated between the inner peripheral surface of the fixing portion 22 and the side surface of the dummy top plate 32. ..

In such a configuration, when the top plate 11 is rotated, the dove receiving member 3 attached to the top plate 11 and the attachment member 2 attached to the dove receiving member 3 rotate together with the top plate 11. .. Therefore, the potter can place the clay or the work on the dummy top plate 32 and rotate the dummy top plate 32 to perform the molding work and the shaving work. At this time, the main body 31 of the dove receiving member 3 catches mud and water scattered in the pottery making work, shavings generated in the shaving work, and the like, so that these are not scattered and the surroundings are not contaminated. Further, since the attachment member 2 attached to the dummy top plate 32 forms a step T having a circular shape in a plan view concentric with the rotation axis A, the electric potter's wheel 1 was used even if the person was not a skilled potter. The work can be easily carried out.

<1-3. Effect>
The potter's wheel unit U2 according to this embodiment is an electric potter's wheel 1 having a top plate 11 rotatably provided around a rotation shaft A, and a potter's wheel-shaped bottom plate that is detachable from the top plate 11. A dove receiving member 3 having a dummy top plate 32 provided on the upper surface of the 311 and an attachment member 2 detachable from the dummy top plate 32 are provided. Then, the dove receiving member 3 includes a dove receiving side fixing portion 33. The dove receiving side fixing portion 33 has an annular shape in a plan view, and when the dove receiving member 3 is attached to the top plate 11, the inner peripheral surface abuts on the side surface of the top plate 11 so that the dove receiving member 3 Is fixed so as not to rotate with respect to the top plate 11. Further, the attachment member 2 includes a fixing portion 22 and a step forming portion 21.

Also in this configuration, as in the above embodiment, the attachment member 2 attached to the dummy top plate 32 forms a positioning step T having a plan view circular shape concentric with the rotation axis of the dummy top plate 32. Even if you are not a skilled potter, you can easily proceed with the work using the electric potter's wheel 1. Further, according to this configuration, the dove receiving member 3 attached to the top plate 11 can receive mud, water, etc. scattered in the pottery making work.

<3. Third Embodiment>
<1-1. Potter's wheel unit configuration>
The configuration of the potter's wheel unit according to the third embodiment will be described with reference to FIG. FIG. 4 is a perspective view showing the configuration of the potter's wheel unit U3 according to the third embodiment. Also in the following, the elements described in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The potter's wheel unit U3 includes an electric potter's wheel 1, a hand-cranked potter's wheel 4, two attachment members 2 and 2, and a belt member 5 attached to each attachment member 2.

The configuration of the electric potter's wheel 1 and each attachment member 2 is the same as that of the first embodiment. However, in this embodiment, one of the two attachment members 2 and 2 is used by being attached to the top plate 11 of the electric potter's wheel 1 (that is, the top plate 11 is the target top plate D). Further, the other attachment member 2 is used by being attached to the top plate 41 of the hand-cranked wheel 4 (that is, the top plate 41 is the target top plate D).

The hand-cranked wheel 4 includes a flat top plate 41 having a circular shape in a plan view and flat upper and lower surfaces. The top plate 41 is supported on the support column 42 in a posture in which the upper surface is substantially horizontal. The support column 42 is arranged so that its axis extends vertically and the axis passes through the center of the top plate 41 in a plan view. A bearing structure (not shown) is provided between the top plate 41 and the support column 42 to smoothly and rotatably support the top plate 41 around the axis of the vertical rotation axis A passing through the center thereof. Further, the lower end of the support column 42 is supported by the support portion 43. Unlike the electric potter's wheel 1, the hand-cranked potter's wheel 4 does not have a drive unit for rotationally driving the top plate 41.

In such a configuration, when the potter grasps the side surface of the top plate 41 by hand and applies an external force in the direction of rotating the top plate 41, the top plate 41 rotates around the vertical rotation axis A passing through the center of the plan view. Rotate with. As described above, since the bearing structure is provided between the top plate 41 and the support column 42, the top plate 41 rotates smoothly with a small external force.

The belt member 5 is a thin-walled belt-shaped member, and is used by being wound around the side surface of the attachment member 2. The belt member 5 is formed of a material having a large coefficient of friction (for example, rubber) so that the surface becomes a sufficiently non-slip surface.

<1-2. How to use the potter's wheel unit>
The usage mode of the potter's wheel unit U3 will be described with reference to FIGS. 4 and 5. FIG. 5 is a diagram showing an example of a usage mode of the potter's wheel unit U3.

When using the potter's wheel unit U3, the potter's wheel attaches the belt member 5 to each of the two attachment members 2 and 2. Further, the potter attaches each attachment member 2 to which the belt member 5 is attached to each of the top plates 11 and 41. That is, one attachment member 2 is attached to the top plate 11 of the electric potter's wheel 1, and the other attachment member 2 is attached to the top plate 41 of the hand-cranked potter's wheel 4. The mode in which the attachment member 2 is attached to the top plate 11 (or the top plate 41) is as described above.

When the attachment member 2 is attached to the top plates 11 and 41 of the electric potter's wheel 1 and the hand-cranked wheel 4, the potter's wheel attaches the electric potter's wheel 1 and the hand-cranked wheel 4 to the respective top plates 11 and 41. The belt members 5 of the member 2 are brought close to each other so as to come into contact with each other (FIG. 4 (b)).

In such a state, when the top plate 11 of the electric potter's wheel 1 is rotated by being driven by the drive unit 13, the attachment member 2 attached to the top plate 11 rotates together with the top plate 11. Then, the other attachment member 2 that is in contact with the attachment member 2 via the belt members 5 and 5 rotates together with the top plate 11 of the hand-cranked wheel 4 to which the attachment member 2 is attached. That is, here, the two attachment members 2 and 2 and the belt member 5 attached to each of them form a power transmission unit, and the rotational movement of the top plate 11 of the electric potter's wheel 1 passes through the power transmission unit. The top plate 41 is rotationally driven by being transmitted to the top plate 41 of the hand-cranked potter's wheel 4. That is, even if the potter does not rotate the top plate 41 of the hand-cranked potter's wheel 4 by his own hands, this is automatically rotationally driven.

According to such a configuration, since the top plate 11 of the electric potter's wheel 1 and the top plate 41 of the hand-cranked potter's wheel 4 are rotationally driven in synchronization, molding work and shaving work are performed in parallel on both top plates 11 and 41. Can proceed. At this time, the potter's wheel does not need to rotate the hand-cranked potter's wheel 4 by his / her own hand, so that the same work efficiency as when the potter's wheel is made by using two electric potter's wheels is realized. Further, the two top plates 11 and 41 can be rotated independently only by slightly shifting the position of the hand-cranked wheel 4 and separating the belt members 5 from each other. Therefore, the top plates can be made independent as necessary. It is also easy to proceed with the work while rotating / stationary.

Further, for example, as shown in FIG. 5, while the molding work and the shaving work are carried out on one of the top plates 11 and 41 (in the example of the figure, the top plate 41 of the hand-cranked wheel 4), the other. It is also possible to proceed with the drying of another work on the top plate (top plate 11 of the electric potter's wheel 1 in the example of the figure). Specifically, the work P1 to be dried is placed on the other top plate 11, and a drying device (for example, a dryer) 10 is fixedly provided in the vicinity thereof. In this way, while the molding work and the shaving work of the work P2 are carried out on one of the top plates 41, the work P1 placed on the other top plate 11 is rotated with respect to the drying utensil 10 to be swiftly performed. To be dried. In this case, the drying appliance 10 may be supplied with power from the outlet jack 145 provided on the electric potter's wheel 1. It is also preferable that the jig 20 for supporting the drying device 10 is detachably provided on the housing 140 of the electric potter's wheel 1.

Further, for example, it is also possible to wind clay on one of the top plates 11 and 41 in a hollow shape and place it on the top plate, and then proceed with the molding work or the like on the top plate while drawing the clay into the other top plate. ..

Needless to say, here as well, by attaching the attachment member 2 to each of the top plates 11 and 41, a step T having a circular shape in a plan view that is concentric with the rotation axis A of each of the top plates 11 and 41 is formed. Therefore, even if you are not a skilled potter, you can easily proceed with the work using the electric potter's wheel 1.

<1-3. Effect>
The potter's wheel unit U3 according to the above embodiment includes an electric potter's wheel 1 including a top plate 11 rotatably provided around the rotation shaft A, a drive unit 13 for rotationally driving the top plate 11, and a rotation shaft A. A hand-cranked potter's wheel 4 having a top plate 41 rotatably provided around the top plate 41 and not having a drive unit for rotationally driving the top plate 41, and one that is detachable from the top plate 11 of the electric potter's wheel 1 and the other It includes two attachment members 2 and 2 that are removable from the top plate 41 of the hand-cranked wheel 4. Each attachment member 2 includes a fixing portion 22 and a step forming portion 21. Then, the rotational movement of the top plate 11 of the electric potter's wheel 1 rotationally driven by the drive unit 13 is attached to the attachment member 2 attached to the top plate 11 and the attachment member 2 attached to the top plate 41 of the hand-cranked potter's wheel 4. The top plate 41 is rotationally driven by being transmitted to the top plate 41 of the hand-cranked potter's wheel 4 via the above.

Also in this configuration, as in the above embodiment, the attachment members 2 attached to the top plates 11 and 41 of the electric wheel 1 and the hand-cranked wheel 4 provide a flat surface concentric with the rotation axis A of the top plates 11 and 41. Since the viewing circle-shaped positioning step T is formed, even a non-skilled ceramics maker can easily proceed with the work using the potter's wheel. Further, according to this configuration, the driving force of the electric potter's wheel 1 is transmitted to the top plate 41 of the hand-cranked wheel 4 via the two attachment members 2 and 2, and this is rotationally driven. Therefore, the heaven of the hand-cranked wheel 4 is driven. It is not necessary for the potter to rotate the plate 41 by hand.

<4. Deformation example of attachment member>
The configuration of the attachment member 2 included in the potter's wheel units U1, U2, U3 according to each of the above embodiments is not limited to the above. Hereinafter, a modified example of the attachment member 2 will be described. When using the potter's wheel units U1, U2, U3 according to each of the above embodiments, a plurality of attachment members having different dimensions and shapes (particularly, the dimensions and shapes of the step forming portion T) are prepared, and the shape of the work is formed. It is preferable to select and use an appropriate attachment member according to the work to be performed.

<4-1. First variant>
The attachment member according to the first modification will be described with reference to FIG. FIG. 6 is a side sectional view and a top view of the attachment member 6 according to the first modification. However, FIG. 6A shows a side sectional view of the attachment member 6 in a state of being removed from the target top plate D, and FIG. 6B shows a state of being attached to the target top plate D. A top view and a side sectional view of the attachment member 6 of the above are shown. The same applies to FIGS. 7 to 9.

The attachment member 6 is a member that can be attached to and detached from the target top plate D and is used by being attached to the target top plate D, like the attachment member 2 according to each of the above-described embodiments. A fixing portion 62 provided on the lower surface thereof is provided.

The step forming portion 61 includes a base plate 611 and a ridge portion 612 provided on the upper surface thereof. The base plate 611 is a flat plate-shaped member having a circular shape in a plan view and flat upper and lower surfaces, and its diameter is larger than the diameter of the target top plate D. On the other hand, the ridge portion 612 is an annular ridge in a plan view formed along a circumference concentric with the base plate 611 in a plan view. The ridge portion 612 forms a circular step (that is, a step corresponding to the height d of the ridge portion 612) T on the base plate 611. The ridge portion 612 may be integrally formed with the base plate 611, or may be formed separately from the base plate 611 by welding, screwing, adhesion using an adhesive, or the like. It may be fixed to the base plate 611.

Similar to the fixing portion 22 included in the attachment member 2 according to the above embodiment, the fixing portion 62 is a member having an annular shape in a plan view and having an inner diameter substantially the same as the diameter of the target top plate D in a plan view. It is arranged at a position concentric with the step forming portion 61, and is fixed to the lower surface of the step forming portion 61 at that position.

The mode in which the attachment member 6 is attached to the target top plate D is the same as the mode in which the attachment member 2 according to each of the above embodiments is attached to the target top plate D. In the attached state, the attachment member 6 is arranged coaxially with the rotation axis A of the target top plate D, is positioned at that position, and is fixed so as not to rotate with respect to the target top plate D. Further, in this mounting state, the ridge portion 612 is arranged concentrically with the rotation axis A, thereby forming a planar circular step T concentric with the rotation axis A.

Also when the attachment member 6 according to this modification is used, a step (positioning step) T having a circular shape in a plan view is formed concentrically with the rotation axis A of the target top plate D. Therefore, even a non-skilled potter's wheel can easily proceed with the work using the potter's wheel.

In particular, in the attachment member 6 according to this modification, the step forming portion 61 includes a flat plate-shaped base plate 611 and an annular convex portion 612 in a plan view provided on the upper surface thereof. Therefore, it is possible to put clay or a work on the base plate 611 and perform the work using the potter's wheel here, and when the work is completed, remove the attachment member 6 from the target top plate D with the clay or the work on it. The attachment member 6 can be moved together. Therefore, the potter's wheel can be quickly used for the next work, and the potter's wheel usage efficiency is improved.

<4-2. Second variant>
The attachment member 7 according to the second modification will be described with reference to FIG. 7. FIG. 7 is a side sectional view and a top view of the attachment member 7 according to the second modification.

The attachment member 7 is a member that can be attached to and detached from the target top plate D and is used by being attached to the target top plate D, like the attachment member 2 according to each of the above-described embodiments. A fixing portion 72 provided on the lower surface thereof is provided.

The step forming portion 71 includes a base plate 711 and a groove portion 712 provided on the upper surface thereof. The base plate 711 is a flat plate-shaped member having a circular shape in a plan view and flat upper and lower surfaces, and its diameter is larger than the diameter of the target top plate D. On the other hand, the groove portion 712 is an annular groove in a plan view formed along a circumference concentric with the base plate 711 in a plan view. The groove portion 712 forms a step (that is, a step corresponding to the depth d of the groove portion 712) T having a circular shape in a plan view on the base plate 711.

A convex portion 713 is provided in the region of the base plate 711 surrounded by the groove portion 712. The convex portion 713 has a circular shape in a plan view, and the diameter is made sufficiently smaller than the inner diameter of the groove portion 712. As shown in the figure, the convex portion 713 may have a flat upper surface or an arc-shaped upper surface that is convex upward. It is also preferable that the entire convex portion 713 (or at least the surface portion) is formed of a cushioning member. Further, in the region outside the groove portion 712 of the base plate 711, a bank portion 714 slightly protruding upward is provided.

Similar to the fixing portion 22 included in the attachment member 2 according to the above embodiment, the fixing portion 72 is a member having an annular shape in a plan view and having an inner diameter substantially the same as the diameter of the target top plate D, and is a member in a plan view. It is arranged at a position concentric with the step forming portion 71, and is fixed to the lower surface of the step forming portion 71 at that position.

The mode in which the attachment member 7 is attached to the target top plate D is the same as the mode in which the attachment member 2 according to each of the above embodiments is attached to the target top plate D. In the attached state, the attachment member 7 is arranged coaxially with the rotation axis A of the target top plate D, is positioned at that position, and is fixed so as not to rotate with respect to the target top plate D. Further, in the mounted state, the groove portion 712 is arranged concentrically with the rotating shaft A, whereby a step T having a circular shape in a plan view is formed concentrically with the rotating shaft A.

Also when the attachment member 7 according to this modification is used, a step (positioning step) T having a circular shape in a plan view is formed concentrically with the rotation axis A of the target top plate D. Therefore, even a non-skilled potter's wheel can easily proceed with the work using the potter's wheel.

In particular, in the attachment member 7, the step forming portion 71 includes a flat plate-shaped base plate 711 and an annular groove portion 712 in a plan view provided on the upper surface thereof. Therefore, for example, an attachment member 7 is used such that the outer diameter of the groove portion 712 substantially matches the outer diameter of the rim portion of the work P so that the rim portion thereof is accommodated in the groove portion 712 with the work P facing downward. When arranged in, the work P is naturally placed coaxially with the rotation axis A of the target top plate D (FIG. 7 (b)). In such a state, if the target top plate D is rotated and the hill or the like is carved out, the hill or the like having a shape arranged in a rotating body can be carved out.

In particular, in the attachment member 7, the step forming portion 71 includes a convex portion 713 provided on the upper surface of the base plate 711 and in a region surrounded by the groove portion 712. Therefore, for example, when the hill of the work P such as a flat plate is carved out, the work P is provided in the area surrounded by the groove portion 712 when the work P is turned over so that the rim portion thereof is accommodated in the groove portion 712. The convex portion 713 is supported so that the work P is not crushed (FIG. 7 (b)). Therefore, it is unlikely that the work P will be crushed while the hill is being scraped.

Further, in the attachment member 7, a bank portion 714 is formed on the outside of the groove portion 712. Therefore, for example, when the hill of the work P such as a flat plate is carved out, when the work P is turned over so that the rim portion thereof is accommodated in the groove portion 712, the rim portion is surely placed on the bank portion 714. It will be caught in the work P and will be supported so that it will not be crushed. Therefore, it is particularly unlikely that the work P will be crushed while the hill is being scraped.

Further, also in this attachment member 7, the clay placed on the base plate 711 and the attachment member 7 together with the work can be removed from the target top plate D as in the attachment member 6 according to the above-described modification, so that the potter's wheel can be used. Increased efficiency.

<4-3. Third variant>
The attachment member 8 according to the third modification will be described with reference to FIG. FIG. 8 is a side sectional view and a top view of the attachment member 8 according to the third modification.

The attachment member 8 is a member that can be attached to and detached from the target top plate D and is used by being attached to the target top plate D, similarly to the attachment member 2 according to each of the above embodiments. A fixing portion 82 provided on the lower surface thereof is provided.

The step forming portion 81 is a member having an annular shape in a plan view and a flat lower surface, and the inner diameter is smaller than the diameter of the target top plate D and the outer diameter is larger than the diameter of the target top plate D. There is. A flat edge portion 811 is formed on the upper surface of the step forming portion 81 along the peripheral edge thereof, and an inclined surface 812 that inclines downward while drawing a gentle concave curve toward the inside is formed inside the flat edge portion 811. Has been done.

Similar to the fixing portion 22 included in the attachment member 2 according to the above embodiment, the fixing portion 82 is a member having an annular shape in a plan view and having an inner diameter substantially the same as the diameter of the target top plate D in a plan view. It is arranged at a position concentric with the step forming portion 81, and is fixed to the lower surface of the step forming portion 81 at that position.

The mode in which the attachment member 8 is attached to the target top plate D is the same as the mode in which the attachment member 2 according to each of the above embodiments is attached to the target top plate D. In the attached state, the attachment member 8 is arranged coaxially with the rotation axis A of the target top plate D, is positioned at that position, and is fixed so as not to rotate with respect to the target top plate D. Further, in the mounted state, the entire upper surface of the target top plate D except for the circular region Q concentric with the rotation axis A is covered by the step forming portion 81, and is along the circumference of the circular region Q. , A step T corresponding to the thickness d on the inner diameter side of the step forming portion 81 is formed. That is, a step T having a circular shape in a plan view that is concentric with the rotation axis A is formed.

Also when the attachment member 8 according to this modification is used, a step (positioning step) T having a circular shape in a plan view is formed concentrically with the rotation axis A of the target top plate D. Therefore, even a non-skilled potter's wheel can easily proceed with the work using the potter's wheel.

In particular, since the attachment member 8 includes an inclined surface 812 in which the step forming portion 81 inclines downward while drawing a gentle concave curve toward the inside, clay is filled in the region surrounded by the positioning step T. At the same time, by thinly pasting the clay on the inclined surface 812 (the two-dot chain line in the lower part of FIG. 8B), the clay is shaped like a bowl that imitates the inclined surface 812 and has a hill at the bottom. It can be easily shaped.

<4-4. Fourth variant>
The attachment member 9 according to the fourth modification will be described with reference to FIG. FIG. 9 is a side sectional view and a top view of the attachment member 9 according to the fourth modification.

The attachment member 9 is a member that can be attached to and detached from the target top plate D and is used by being attached to the target top plate D, similarly to the attachment member 2 according to each of the above embodiments. It is provided with a fixing portion 92 provided on the lower surface thereof.

The step forming portion 91 is a member having a circular shape in a plan view and a flat lower surface, and has a diameter larger than the diameter of the target top plate D. A flat edge portion 911 is formed on the upper surface of the step forming portion 91 along the peripheral edge thereof, and a recess 912 is formed inside the flat edge portion 911. The recess 912 has a circular shape in a plan view that is concentric with the step forming portion 91 in a plan view, and is a bowl-shaped recess whose cross section follows an arc. The recess 912 forms a circular step (that is, a step corresponding to the depth of the recess 912) T in a plan view. Further, a collar portion 913 is formed on the side surface of the step forming portion 91.

Similar to the fixing portion 22 included in the attachment member 2 according to the above embodiment, the fixing portion 92 is a member having an annular shape in a plan view and having an inner diameter substantially the same as the diameter of the target top plate D in a plan view. It is arranged at a position concentric with the step forming portion 91, and is fixed to the lower surface of the step forming portion 91 at that position.

The mode in which the attachment member 9 is attached to the target top plate D is the same as the mode in which the attachment member 2 according to each of the above embodiments is attached to the target top plate D. In the attached state, the attachment member 9 is arranged coaxially with the rotation axis A of the target top plate D, is positioned at that position, and is fixed so as not to rotate with respect to the target top plate D. Further, in the mounted state, the recess 912 is arranged concentrically with the rotation shaft A, thereby forming a step T having a circular shape in a plan view concentric with the rotation shaft A.

Also when the attachment member 9 according to this modification is used, a step (positioning step) T having a circular shape in a plan view is formed concentrically with the rotation axis A of the target top plate D. Therefore, even a non-skilled potter's wheel can easily proceed with the work using the potter's wheel.

In particular, since the step forming portion 91 of the attachment member 9 is provided with a bowl-shaped recess 912 whose cross section follows an arc, clay is thinly attached to the recess (two-dot chain line in the lower part of FIG. 9B). , The clay can be easily formed into a bowl shape that resembles the recess 912.

Further, in the attachment member 9, as in the attachment member 6 according to the above-described modification, the clay and the attachment member 9 for each work can be removed from the target top plate D, so that the potter's wheel can be used more efficiently.

<5. Other variants>
The potter's wheel units U1 and U2 according to the first and second embodiments may include a hand-cranked potter's wheel 4 instead of the electric potter's wheel 1.

In the third embodiment, the belt member 5 is attached to the attachment member 2, but if the frictional force on the side surface of the attachment member 2 is large, the belt member 5 can be omitted. Alternatively, while omitting the belt member 5, in order to make the frictional force on the side surface of the attachment member 2 sufficiently large, embossing is performed on the side surface, and a coating layer is formed of a material having a relatively large friction coefficient. Etc. may be applied. Further, while omitting the belt member 5, a nylon gear in which the gear is vertically cut may be provided around the attachment member 2.

In the third embodiment, in order for power to be appropriately transmitted between the attachment member 2 on the electric potter's wheel 1 side and the attachment member 2 on the hand-cranked potter's wheel 4, the attachments attached to the top plates 11 and 41. It is preferable that the members 2 are arranged at substantially the same height. In order to surely realize this, it is also preferable to provide a mechanism for adjusting the height on at least one of the electric potter's wheel 1 and the hand-cranked potter's wheel 4.

In each of the above embodiments, in order to sufficiently suppress the rotational deviation of the attachment members 2, 6 to 9 with respect to the target top plate D, the lower surfaces of the step forming portions 21, 61, 71, 81, 91 and the target top plate D It is also preferable that a sheet-like member made of a material having a large friction coefficient (for example, rubber) is provided between the upper surface and the upper surface. Similarly, it is also preferable that a similar sheet-like member is provided between the lower surface of the main body 31 and the upper surface of the top plate 11 in order to sufficiently suppress the rotational deviation of the dove receiving member 3 with respect to the top plate 11. ..

Other configurations can be modified in various ways without departing from the spirit of the present invention.

1 Electric potter's wheel 11 Electric potter's wheel top plate 12 Support 13 Drive unit 14 Housing 2 Attachment member 21 Step forming part 22 Fixing part 3 Dove receiving member 31 Main body 32 Dummy top plate 33 Dobe receiving side fixing part 4 Hand-cranked wheel 41 Top plate 42 Strut 43 Support part 5 Belt member 6 Attachment member 61 Step forming part 611 Base plate 612 Convex part 62 Fixed part 7 Attachment member 71 Step forming part 711 Base plate 712 Groove part 713 Convex part 714 Bank part 72 Fixed part 8 Attachment member 81 Step forming part 811 Edge part 812 Inclined surface 82 Fixing part 9 Attachment member 91 Step forming part 911 Edge part 912 Recessed part 913 Collar part 92 Fixed part A Rotating shaft D Target top plate T Positioning step (step)
U1, U2, U3 potter's wheel unit

Claims (8)

A potter's wheel with a top plate that is rotatably provided around the axis of rotation,
An attachment member that can be attached to and detached from the top plate,
With
The attachment member
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. Department and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
A potter's wheel unit characterized by being equipped with. A potter's wheel with a top plate that is rotatably provided around the axis of rotation,
A dove receiving member that is removable from the top plate, has a tub shape, and has a dummy top plate provided on the upper surface of the bottom plate.
An attachment member that can be attached to and detached from the dummy top plate,
With
The dove receiving member
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the dove receiving member so as not to rotate with respect to the top plate. Dove receiving side fixing part,
With
The attachment member
In the mounted state where this is attached to the dummy top plate, the inner peripheral surface abuts on the side surface of the dummy top plate to fix the attachment member so as not to rotate with respect to the dummy top plate. An annular fixing part and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
A potter's wheel unit characterized by being equipped with. An electric potter's wheel including a top plate rotatably provided around a rotation shaft and a drive unit for rotationally driving the top plate.
A hand-cranked potter's wheel that has a top plate that is rotatably provided around the rotation axis and does not have a drive unit that drives the top plate to rotate.
Two attachment members, one of which is removable to the top plate of the electric potter's wheel and the other is removable to the top plate of the hand-cranked potter's wheel.
With
Each of the two attachment members
In the mounted state where this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. When,
In the mounted state, a step forming portion forming a plan-viewing circular positioning step concentric with the rotation axis of the top plate, and a step forming portion.
With
The rotational movement of the top plate of the electric potter's wheel, which is rotationally driven by the drive unit, is transmitted through the attachment member attached to the top plate and the attachment member attached to the top plate of the hand-cranked potter's wheel. The top plate is configured to be rotationally driven by being transmitted to the top plate of the above.
A potter's wheel unit characterized by that. In the potter's wheel unit according to any one of claims 1 to 3.
The step forming portion
An annular member in a plan view whose inner diameter is smaller than the diameter of the top plate.
A potter's wheel unit characterized by that. In the potter's wheel unit according to any one of claims 1 to 3.
The step forming portion
Flat base plate and
An annular convex portion in a plan view provided on the upper surface of the base plate, and
A potter's wheel unit characterized by being equipped with. In the potter's wheel unit according to any one of claims 1 to 3.
The step forming portion
Flat base plate and
An annular groove in a plan view provided on the upper surface of the base plate,
A potter's wheel unit characterized by being equipped with. In the potter's wheel unit according to claim 6,
The step forming portion
A convex portion provided on the upper surface of the base plate and surrounded by the groove portion,
A potter's wheel unit characterized by being equipped with. It is an attachment member that can be attached to and detached from the top plate of the potter's wheel.
When this is attached to the top plate, the inner peripheral surface abuts on the side surface of the top plate to fix the attachment member so as not to rotate with respect to the top plate. Department and
In the mounted state, a step forming portion that forms a step for positioning in a circular shape in a plan view concentric with the rotation axis, and a step forming portion.
An attachment member for a potter's wheel, which is characterized by being provided with.

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