JPS6235434Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a potter's wheel equipped with an elastic stopper that can be placed in a predetermined position relative to a table cover, a potter's wheel for children, or the like.

As shown in the partially cutaway front view of FIG. 1, the conventional general structure for expanding the framework of this type of horokaya, etc., has several main bones 2 pivoted to the upper lathe 1. A lower wheel 4 is arranged and converged in the radial direction, and is connected to the lower end of the drawstring 3 that passes through the insertion hole 1a at the center of the upper wheel 1 and hangs down below it. , the same number of support bones 5 as the main bones 2
are arranged and connected in the radial direction, and the free ends are connected to the main bone 2.
It is pivoted at the middle part of the.

The lower wheel 4 has a long length in which an elastic stopper 6 is installed in the upper part of the inner cavity of the shaft tube 4a, and a protruding and bent hooking portion 6a in the middle thereof is vertically bored in the front side of the shaft tube 4a. It is fitted in such a way that it protrudes forward from the hole.

In the wheel body composed of the upper wheel 1 and the lower wheel 4 as an example of the conventional structure as described above, when the frame is expanded during use of the wheel, when the drawstring 3 is pulled up, the lower wheel 4 rises and the shaft cylinder is expanded. 4a is inserted into the insertion hole 1a of the upper wheel 1, and the hooking part 6a of the elastic stopper 6 is inserted into the stepped part 1b of the inner cavity of the upper wheel 1.
Hang on.

Also, when the inner cap body 7 is pushed down on the upper wheel 1, the lower end edge of the cap body 7 is pressed down to the hooking part 6a.
is pushed inward against the elasticity, and the stepped portion 1b
The shaft cylinder 4a slides down inside the upper wheel 1 due to the restoring elasticity of the main bone 2 and the support bone 5, and becomes folded.

In such a conventional wheel body consisting of the upper wheel 1 and the lower wheel 4, the operation of the cap body 7 does not work properly, and the cap body 7 sometimes gets caught on the upper edge of the inner cavity of the upper wheel 1 when the skeleton is expanded. , the hooking portion 6a remains pushed inward without being raised, and the hooking portion 6a does not completely engage with the stepped portion 1b of the inner hole.

The purpose of this invention is to solve the above-mentioned problems, and its purpose is to have an extremely simple structure, to latching and fixing with stable movement, and to simply press the top of the bottom wheel slightly downward with your fingertips. , to provide a potter's wheel body that can be unlatched and completely folded in an instant.

The potter's wheel body of the present invention has a lower potter's wheel that is cylindrical and has a lumen inside, a through hole at the top that connects to the lumen, and a vertical elongated hole at the side that connects to the lumen.
The hook part is provided with a substantially dogleg-shaped hook part, an approximately inverted U-shaped curved part connected to the upper part of the hook part, and a downwardly directed elastic piece part connected to the hook part, so that the hook part can protrude outward from the elongated hole of the lower wheel. At the same time, an elastic stopper is installed in the inner cavity of the lower wheel so that a gap is formed between the top of the lower wheel and the curved part, and the lower part of the elastic stopper is inserted through the through hole of the lower wheel and the curved part of the elastic stopper is inserted into the hole of the lower wheel. A compression type spring is interposed between the top of the bottom wheel and the curved part of the elastic stopper, and inside there is an insertion hole, a large diameter hole, and a center hole from below. The present invention is characterized in that it is comprised of an upper raceway which is provided so that the lower raceway is inserted through it from below, and the hook part of the elastic stopper can be engaged with the boundary between the insertion cavity and the large diameter cavity.

Next, the configuration, operation, and effects of the present invention will be explained with reference to the drawings showing the embodiments of the present invention.

Reference numeral 11 shown in the front view of FIG. 2, the plan view of FIG. 3, and the vertical cross-sectional side view of FIG.

The shaft cylinder 12 has an inner hole 12a at its lower end, a bottom flange 12b protruding from it, an upper flange 12c above, and a narrow diameter section 12d at its upper end.

The head tube 13 has a rounded top 13b with a through hole 13a in its upper end, and a vertically oriented elongated hole 13c in its front side.

Reference numeral 14 denotes an approximately inverted U-shaped elastic stopper made of plastic material, which has a hooking part 14a protruding from the front of the middle part, and the lower end of the drawstring 15 is tied to the curved part 14b at the upper end to connect the inner cavity of the head tube 13. Inside 13', there is a hook 14
a to protrude from the elongated hole 13c and fit into the drawstring 15.
, a spring 16 is interposed on the outer periphery of the through hole 1.
3a, and insert it into the head cylinder 13, and insert it into the head cylinder 1.
The lower end portion of the inner cavity 13' of No. 3 is fitted into the upper end narrow diameter portion 12d of the shaft tube 12, and the shaft tube 12 is fixed therethrough with a pin 9.

The lower wheel 11 may be formed by integrally molding the shaft tube 12 and the head tube 13 with a plastic material, with an inner cavity 13' extending from the lower end in the direction of the central axis. is inserted, the elastic stopper 14 is pulled up by inserting the drawstring 15 into the through hole 13a, and the inner cavity 13'
It goes without saying that the same effect as that of the lower raceway 11 can be obtained by fitting the shaft cylinder 12 and the head cylinder 13 together and fixing them together.

17 shown in the partially longitudinal front view of FIG. 5 is an upper lathe, and 18 is its base cylindrical portion, which has a bottom flange 18a protruding from its lower end, and a male thread 1 on the outer peripheral surface of the upper cylindrical portion 18b.
8c is screwed in, and is provided with an insertion cavity 18d through which the head tube 13 of the lower raceway 11 is inserted in the central axis direction, and the lower end of the insertion cavity 18d has a truncated conical expanded diameter 18e.

Reference numeral 19 designates a body cylinder, which has an enlarged-diameter dish portion 19a at the upper end and a flange portion 19b at the lower end.
b is pressed against the upper surface of the bottom flange 18a and fixed above the base cylindrical portion 18. At this time, the base tube part 18 and the body tube 1
Of course, it may also be a continuous integral molding of 9 and 9.

A cap body 20 has a center hole 20a having the same diameter as the insertion hole 18d of the base tube 18 at the upper end, and a peripheral edge 20b at the lower end is connected to the enlarged diameter plate portion 19a of the body tube 19.
A flat spherical head 17' is formed on the upper part of the upper wheel 17 by coaxially fitting and fixing it to the upper edge of the wheel.

In this way, the base cylinder part 18, the body cylinder 19, the cap body 2
It becomes the upper wheel 17 which is integrally combined and fixed by 0.

In the lower wheel 11 and the upper wheel 17 configured as described above, when the drawstring 15 is pulled upward during the expansion of the framework in use, the lower wheel 11 is pulled up, and the rounded top part 13b is moved to the upper wheel. The upper flange 12c abuts against the truncated cone-shaped inner wall of the expanded aperture 18e, and at the same time, the movement is blocked and stopped, and at the same time, the elastic stopper of the interior 1
The hooking part 14a of 4 protrudes into the elongated hole 13c due to elasticity and is hooked to the upper end of the base tube part 18, and as shown in the longitudinal cross-sectional side view of FIG. It is fitted and fixed at a predetermined position within the upper lathe wheel 17 while protruding upward by an appropriate length.

When folding or folding, when the top part 13b of the lower wheel 11 in the protruding state is pushed downward with a fingertip, the latching portion 14a of the elastic stopper 14 will be released as shown in the longitudinal cross-sectional side view of FIG. The head barrel 13 slides down inside the insertion hole 18d while being hooked to the upper end of the base barrel portion 18, and the elastic stopper 14 is hooked as the spring 16 inserted above is elastically compressed. The upwardly inclined portion of the stop portion 14a is pressed by the upper end wall of the elongated hole 13c and pushed into the insertion cavity 18d.

In this way, the elastic stopper 14 and the upper end of the base cylinder part 18 are unlatched, and at the same time, the elasticity of the main bones 2 and struts 5 in the elastic direction of the horokaya tension frame causes them to be lowered instantly. The potter's wheel 11 descends within the upper potter's wheel 17 and separates, and the potter's wheel becomes folded.

As described above, according to the present invention, the following excellent effects can be achieved.

(1) Since the wheel body is composed of a lower wheel, an elastic stopper, a drawstring, a spring, and an upper wheel, the structure is simple, and it can be latched and fixed with stable operation, and the top of the lower wheel can be pulled slightly downward with a fingertip. Just by pushing it in, the latch is instantly released and folding can be completed.

(2) The operation direction for releasing the engagement between the lower wheel and the upper wheel is the same as the direction in which the lower wheel is removed from the upper wheel, and the operating point is set to the lower wheel, so the operation for releasing the engagement is made the same direction. The force is also used as an external force, allowing for quick and reliable folding.

(3) Since there is no need to separately provide a member for releasing the engagement of the elastic stopper on the upper wheel, the structure of the upper wheel can be simplified.

(4) Since a compression type spring is installed with a space between the top of the bottom racer and the curved part of the elastic stopper, the hook part of the elastic stopper will surely protrude outward and move upward. You can reliably engage with the potter's wheel.

(5) Since the engagement between the elastic stopper and the upper raceway can be released by moving the drawstring upward relative to the lower raceway, there is no risk that the engagement between the elastic stopper and the upper raceway will be impossible, and the hook part of the elastic stopper will not be pushed in. Even if it moves downward and gets caught, it can be returned to the externally protruding state by performing the same operation, and this type of repair can be easily performed from the outside.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a partial sectional view of a conventional potter's wheel body such as Horokaya, an overall view of the frame with some notches; and Fig. 2 is a front view of the lower wheel of the present invention. , Figure 3 is a plan view, Figure 4 is a longitudinal side view,
FIG. 5 is a front view of a partial cross section of the upper wheel, FIG. 6 is a longitudinal side view of the lower wheel and upper wheel in a locked state, and FIG. 7 is a cutaway vertical side view of the lower wheel and the upper wheel in an unlatched state. 9...pin, 11...bottom wheel, 12...shaft tube, 12a...inner hole, 12b...bottom flange, 12c...
... Upper guard, 12d... Thin diameter part, 13... Head barrel, 1
3'...Inner cavity, 13a...Through hole, 13b...Top part, 13c...Long hole, 14...Elastic stopper, 14a
...Latching part, 14b...Curved part, 15...Drawstring,
16... Spring, 17... Upper wheel, 17'
...Head, 18...Base tube part, 18a...Bottom guard, 1
8b...Cylindrical part, 18c...Male thread, 18d...
Insertion cavity, 18e... Expansion caliber, 19... Trunk cylinder, 1
9a... Disc part, 19b... Flange part, 19c... Female thread, 20... Cap body, 20a... Center hole, 2
0b...Periphery.

Claims (1)

[Scope of utility model registration request] It has a cylindrical shape, and has a lumen 13' inside, a through hole 13a connected to the lumen 13' at the top, and an lumen 1 on the side.
3', a lower wheel 11 provided with a vertical elongated hole 13c, and a hooking part 14 having a substantially doglegged shape.
a, a substantially inverted U-shaped curved part connected to the upper part of this, and a downwardly directed bullet part connected to this, and a hanging part 14
An elastic stopper 14 is installed inside the inner cavity 13' of the lower wheel 11 so that a can protrude outward from the elongated hole 13c of the lower wheel 11, and a gap is formed between the top of the lower wheel 11 and the curved part. and the through hole 1 of the potter's wheel 11
3a and whose lower part is tied to the curved part of the elastic stopper 14; and a compression type spring 16 interposed between the top of the bottom wheel 11 and the curved part of the elastic stopper 14. There is an insertion hole 18 inside from below.
d, a large diameter cavity, and a center hole 20a are provided respectively, and the lower wheel 11 is inserted from below in a penetrating state, and the hook part 14a of the elastic stopper 14 is engaged with the boundary between the insertion cavity 18d and the large diameter cavity. A potter's wheel body for a table covering, a child's cupboard, etc., which is characterized by being composed of a potter's wheel 17 that can be used, and a potter's wheel for children.