JP4443169B2 - Pottery wheel - Google Patents

Description

  The present invention relates to a pottery wheel.

  A potter's wheel is generally provided with a turntable on which pottery is performed, a motor for rotationally driving the turntable, and a support base to which the motor is attached. The support base has a top plate disposed on the turntable side and a housing part formed below the top plate. The motor is usually arranged with other control devices inside the casing.

  As a conventional pottery wheel for ceramics, one in which a turntable and a rotating shaft of a motor are arranged coaxially is already known (for example, see Patent Document 1).

As another conventional pottery wheel for ceramics, one having a plurality of legs extending downward from the lower end of the top plate or the casing has already been proposed (see, for example, Patent Documents 1 to 3).
JP 2003-175507 A U.S. Pat. No. 243276 US Pat. No. 2,538,828 specification

  As described above, the conventional pottery wheel for pottery is characterized by a configuration in which the turntable and the rotation shaft of the motor are arranged coaxially. There is a risk of rattling.

  On the other hand, if only the configuration including the legs as described above is used as a feature, for example, there is a possibility that the compactness of the support base may be hindered. In particular, a normal potter's wheel has a height of about 50 cm, is too high for use on a table, and downsizing is important.

  An object of the present invention is to make the potter's wheel mainly compact in the horizontal direction and to suppress rattling.

  Another object of the present invention is to adjust the height of the potter's wheel according to the physique and preference of the potter.

  Still another object of the present invention is to improve a conventional potter's wheel so that it can be used as a desktop type.

The ceramic potter's wheel according to claim 1 has a turntable, a motor that rotationally drives the turntable and has a rotation shaft that is arranged on the same axis as the rotation center of the turntable, a support base that supports the motor, and one end thereof. Three legs that are fixed to the support base and have the other ends extending downward. The legs each include a fixed leg fixed to the support base and a movable leg detachably connected to the fixed leg. The fixing leg has a hollow shape, and a plurality of insertion holes into which the bolts can be inserted are arranged in the longitudinal direction in the side surface portion , and a female female screw to which the bolt can be screwed is formed in the insertion hole. The formed movable leg is sized to be accommodated on the inner peripheral side of the fixed leg, and a plurality of insertion holes into which bolts can be inserted are formed in the side surface portion. By inserting bolts into the leg insertion holes, Wherein the amount of protrusion with respect to the fixed legs of Doashi was adjustable.

  The potter's wheel according to claim 2 is the potter's wheel according to claim 1, wherein the turntable is directly connected to the rotating shaft of the motor.

  According to a third aspect of the ceramic potter's wheel according to the first or second aspect, the movable leg is connected to the fixed leg so as to protrude and retract in the longitudinal direction from the fixed leg.

  The potter's wheel according to claim 4 is the potter's wheel according to any one of claims 1 to 3, wherein the fixed leg has a length corresponding to the axial length of the portion supported by the motor support. ing.

  The potter's wheel according to claim 5 is the potter's wheel according to any one of claims 1 to 4, wherein the movable leg can be fixed to at least two places with respect to the fixed leg.

In the ceramic pot according to claim 1, since the turntable, the rotation center of the motor and the shaft of the motor are arranged on the coaxial line, the horizontal length can be shortened to enable a compact design, Since it is supported at three points by the three legs, rattling can be effectively suppressed even when it is placed on an uneven surface. In addition, by inserting bolts into the insertion holes of the fixed legs and the insertion holes of the movable legs, the amount of protrusion of the movable legs with respect to the fixed legs can be adjusted, and the insertion holes of the fixed legs formed side by side in the longitudinal direction And since a bolt is inserted in the insertion hole of a movable leg, even if it applies big force from the upper part of a support stand, the force can be supported with a volt | bolt.

  In the ceramic potter's wheel according to claim 2, since the DD motor in which the turntable is directly attached to the rotating shaft is adopted, the axial length of the entire potter's wheel can be shortened.

  In the ceramic pot according to claim 3, since the length of the leg is adjustable, the height of the turntable is set according to the physique of the person performing the work, the posture at the time of work, the size of the work to be made, etc. Various settings can be made and work can be performed at an optimum height according to the situation.

  In the ceramic potter's wheel according to claim 4, since the length of the fixed leg corresponds to the axial length of the DD motor having a shorter axial length than that of a normal motor, the height of the turntable is lowered. It can be set, and can be used as, for example, a desktop type.

  In the ceramic potter's wheel according to claim 5, the movable leg can be prevented from rattling with respect to the fixed leg as compared with the case where the movable leg is fixed at one place.

  FIG. 1 shows a pottery wheel 1 in which an embodiment of the present invention is adopted.

  The ceramic pot 1 includes a turntable 3, a pan 4, a DD motor 5, and a support 7.

  The turntable 3 is a disk-shaped member, and work is performed on the upper surface side. The turntable 3 is directly mounted on the rotating shaft 6 of the DD motor 5 without using a speed reducer.

  The cradle 4 is a dish-like member disposed so as to cover the lower side and the side of the turntable 3, and is for receiving a cradle or the like that scatters or falls from the upper surface of the turntable 3.

  The DD motor 5 is for rotating the turntable 3, and preferably a DC brushless motor is used. The DD motor 5 has a rotating shaft 6 extending in the vertical direction, and the turntable 3 is screwed to the upper end. The rotary shaft 6 is arranged to extend perpendicularly to the turntable 3 and the upper surface 7a of the support base. In this DD motor 5, the axial length from the upper surface 7a of the support base 7 to the lower end of the rotary shaft 6 is half of the axial length when the turntable 3 is mounted via the reduction gear. Has been shortened to the extent.

  The support base 7 includes a top plate portion 7b, a housing portion 7c, and three leg portions 9. The housing portion 7c is formed on the lower surface side of the top plate portion 7b and incorporates the DD motor 5 and a control device (not shown). Further, a power switch 8 and a forward / reverse switching knob 10 are provided on the side surface of the housing portion 7c. The leg portions 9 are respectively attached to three places (see FIG. 2) on the lower surface side of the top plate portion 7b. Each of the leg portions 9 has a fixed leg 11 and a movable leg 13, and the length in the longitudinal direction can be adjusted.

  The fixed leg 11 is a cylindrical member, and is slightly longer than the length corresponding to the axial length of the DD motor 5, specifically, the length from the upper surface 7 a of the support base 7 to the lower end of the housing portion 7 c. Have a long length. A plurality of insertion holes 11 a into which the bolts 15 can be inserted are formed in the side surface portion of the fixed leg 11 in the longitudinal direction. Each insertion hole 11a is penetrated, and the internal thread in which the volt | bolt 15 can be screwed is formed. Here, the plurality of insertion holes 11a are provided at four locations, and the height from the lower end portion 13b of the movable leg 13 to the upper end portion of the turntable 3 can take four types of 555 mm, 525 mm, 495 mm, and 465 mm. It is formed as follows. The fixed leg 11 has such a length that the height from the lower end 11b to the turntable 3 when the movable leg 13 is removed is 290 mm.

  The movable leg 13 is a cylindrical member having a diameter that can be accommodated on the inner peripheral side of the fixed leg 11. The movable leg 13 is formed with a plurality of insertion holes 13a similar to the fixed leg 11, and the bolts 15 can be inserted into the arbitrary insertion holes 11a and 13a, so that the four lengths can be taken. A cap 14 made of an elastic member is attached to the lower end portion of the movable portion 13 in order to give a cushioning property.

  The bolt 15 is for fixing the movable leg 13 to the fixed leg 11 at a predetermined position. Two bolts 15 are preferably used in each leg portion 9 and are inserted into the two insertion holes 11a and 13a as shown in FIG. Further, the potter's wheel 1 of the present embodiment is configured such that the lower end portion of the fixed leg 11 is located below the casing portion 7c corresponding to the lower end portion of the potter's wheel 1 main body portion, so that it can be moved from the leg portion 9. The leg 13 may be removed and supported only by the fixed leg 11. The functions of the plurality of fixed portions in the present invention are expressed by the insertion holes 11 a formed in the fixed legs 11 and the insertion holes 13 a formed in the movable legs 13. The bolt 15 is not necessarily attached to the leg portion 9. In this case, the movable leg 13 can be detached from the fixed leg 11 and directly supported by the fixed leg 11.

  In the pottery wheel 1 configured as described above, when the power switch 8 provided in the housing portion 7c is turned on, the DD motor 5 is driven to rotate and the turntable 3 starts to rotate. At this time, the potter can change the rotational speed of the DD motor 5 appropriately by changing the amount of operation pedal (not shown) connected to the control device in the housing portion 7c, for example.

  In this ceramic potter's wheel 1, when the potter wants to change the height of the turntable 3 of the potter's wheel 1, the movable leg 13 is projected from the fixed leg 11 by a desired length, and the bolt 15 is moved outside. Are inserted into the insertion holes 11a and 13a, or the bolts 15 are removed from the legs 9 and the movable legs 13 are removed from the fixed legs 11. In the former case, preferably, two bolts 15 are inserted into different insertion holes 11a and 13a, respectively, as shown in FIG.

  According to such a ceramic pot 1, the length of the leg portion 9 is adjustable, so that the turntable can be adjusted according to the physique of the person performing the work, the posture during the work, the size of the work to be made, etc. Various heights can be set, and work can be performed at an optimum height according to the situation. Further, since the DD motor 5 in which the turntable 3 is directly attached to the rotary shaft 6 is employed in the potter's wheel 1, the axial length of the potter's wheel 1 as a whole can be shortened, and the width of the settable height is widened. Thereby, for example, it becomes possible to perform work by placing the potter's wheel 1 on a desk or the like. Further, by using the DD motor 5, the stability of the turntable 3 during low-speed rotation can be obtained.

[Other Embodiments]
In the potter's wheel 1 of the above embodiment, the bolts 15 are tightened at two places for each leg portion 9, but the number of bolts 15 may be increased or decreased as necessary. Further, the number and interval (pitch) of the insertion holes 11a and the movable legs 13a may be set as necessary. Moreover, you may connect the turntable 3 and a motor via a reduction gear, without limiting the motor for rotating the turntable 3 to a DD motor.

  According to the present invention, since the turntable and the rotating shaft of the motor are arranged coaxially, the horizontal length can be shortened and a compact design can be realized, and at the same time, three points are provided by three legs. Therefore, backlash can be effectively suppressed even when it is placed on an uneven surface. Moreover, the height can be adjusted appropriately according to the physique and preference of the potter by the movable legs. Furthermore, the movable leg can be removed and used as a desktop type as a fixed leg only.

The side view which shows a potter's wheel with one embodiment of the present invention partially broken and seen through. The top view of the said potter's wheel for ceramics.

DESCRIPTION OF SYMBOLS 1 Ceramic potter's wheel 3 Turntable 5 DD motor 7 Support base 9 Leg part 11 Fixed leg 11a Insertion hole 13 Movable leg 13a Insertion hole 15 Bolt

Claims (5)

A turntable,
A motor that rotationally drives the turntable, and has a rotation shaft that is arranged on the same axis as the rotation center of the turntable;
A support base for supporting the motor;
One end is fixed to the support base, and the other end includes three legs extending downward,
The leg portion has a fixed leg fixed to the support base and a movable leg detachably connected to the fixed leg, respectively.
The fixed leg has a hollow shape, and a plurality of insertion holes into which bolts can be inserted are formed side by side in the longitudinal direction, and a female female thread to which the bolts can be screwed is formed in the insertion holes. And
The movable leg has a size that can be stored on the inner peripheral side of the fixed leg, and a plurality of insertion holes into which bolts can be inserted are formed in the side surface portion,
A ceramic potter's wheel characterized in that the amount of protrusion of the movable leg relative to the fixed leg can be adjusted by inserting a bolt into the insertion hole of the fixed leg and the insertion hole of the movable leg.   The potter's wheel according to claim 1, wherein the turntable is directly connected to a rotating shaft of the motor.   The potter's wheel according to claim 1 or 2, wherein the movable leg is connected to the fixed leg so as to protrude and retract in the longitudinal direction.   The potter's wheel according to any one of claims 1 to 3, wherein the fixed leg has a length corresponding to an axial length of a portion supported by the support base of the motor. The potter's wheel according to any one of claims 1 to 4, wherein the movable leg can be fixed to the fixed leg in at least two places.

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