JPH02266196A - Lifting gear - Google Patents

Abstract

PURPOSE:To improve the extent of assemblability and prevent a mounting piece and a ring body from coming off at time of lifting motion of a lifting pipe by forming a notch part in a column, attaching a detable body for the lifting pipe to the mounting piece, and pinching each projecting strip at both sides of the notch part with a projection of the ring body. CONSTITUTION:In this lifting gear, there are provided a lifting pipe supporting an equipment main body at the edge, and a base projectingly installed with a column 3 supporting this lifting pipe. Then, a notch part 18 is formed in an edge of this column 3, and a projection 19 is formed in each edge at both sides of the notch part 18 on an end inner surface of the column 3 with a projecting strip, and a ring body 3 inserting through the lifting pipe is attached to the edge of the column 13, while a mounting piece 20 being fitted in the notch part 18 and installing a detachable body 21 is formed in the ring body 13, and a projection 16 pinching the outside of the projection 19 at both sides of the notch part 18 is formed in the ring body 13. Consequently, assemblability is improved by installing the detachable body 21 of the lifting pipe, and the both-side projection 19 is pinched by the projection 16 of the ring body 13, whereby any expansion of the notch part 18 is kept back, thus the mounting piece 20 and the ring body 13 are prevented from coming off due to an up-and-down motion of the lifting pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a lifting device used for electric fans, lighting devices, bonnet dryers, microphone stands, and the like.

(b) Prior Art As a technology prior to the present invention, there is an electric fan elevating device described in Japanese Utility Model Application Laid-Open No. 63-80400.

The lifting device has a notch formed at the top end of the column, a mounting piece that fits into the notch on the ring body attached to the top end of the column, and a locking device for the lifting pipe that moves up and down relative to the column is formed on the mounting piece. It is.

The elevating device simply has a mounting piece fitted into a notch in the column, and when a force is applied to push the column apart due to the lifting and lowering of the elevating pipe and the urging force of the locking device, the notch will open. Since the upper edge is open, it expands in the circumferential direction of the column. As a result, a gap is created between the attachment piece of the ring body and the notch, and the attachment of the ring body to the support is not stable, resulting in a situation in which the inner edge of the ring body is pressed against the lifting pipe.

(c) Problems to be Solved by the Invention The present invention provides an elevating device in which the connection between a support and a ring body is stabilized, attachment of a detachable body is facilitated, and an elevating pipe can be stably supported. The challenge is to

(d) Means for Solving the Problems The present invention provides a lifting pipe that supports the main body of equipment at its end, a base having a protruding support for supporting the lifting pipe in elevation, and an lifting pipe that is attached to the end of the support. A notch is formed at the end of the support, protrusions are formed on both sides of the notch on the inner surface of the end of the support, and a ring body through which the lifting pipe is inserted is formed at the end of the support. The annular body has a means for forming a mounting piece that fits into the notch and attaches the detachable body, and the annular body has a means for forming protrusions that clamp the outside of the protrusions on both sides of the notch. It is something that solves problems. Further, the present invention provides a lifting pipe that supports the main body of the equipment at the end, a base having a protruding support for supporting the lifting pipe in elevation, a ring body attached to the end of the support, and a ring body formed at the end of the support. The problem is solved by providing a means for attaching and detaching the body to be attached to the notch, forming protrusions on both side edges of the notch of the support, and forming a protrusion on the ring body that engages with the protrusion of the notch. This is to solve the problem.

The latter means includes within the scope of the technology a configuration in which the attachment piece of the ring body in the former means is separated and the attachment piece attached to the notch is pressed and supported by the ring body.

The ring body may be configured to be fitted or fitted into the end of the support column, and is fixed by elastic fitting with an elastic piece or the like or by screwing.

(E) Function The present invention prevents the notch from expanding by disposing a locking and disengaging body in the notch formed at the end of the support and locking both sides of the notch with ring bodies. ing.

(F) Embodiment The structure of the present invention is based on the structure in which the present invention is adopted for the support column 3 protruding from the base 2 of the electric fan 1 shown in FIG. This will be explained in detail.

The base 2 and the support column 3 are integrally molded from synthetic resin, and the support column 3 is formed to have an egg-shaped cross section. A control switch is attached to the base 2, and the bottom opening is closed with a back plate made of sheet metal or synthetic resin. The elevating pipe 4 is molded from synthetic resin and has an external dimension that allows it to be inserted through the opening at the upper end of the support column 3. The lifting pipe 4 is formed to have an egg-shaped cross section in order to create a sense of unity with the support column 3. A bifurcated portion 6 for supporting the fan main body 5 is integrally formed at the upper end portion of the elevating pipe 4 that is not inserted into the support column 3. The bifurcated portions 6 support the neckpiece 7 in such a way that the angle of elevation can be freely adjusted. Since the bifurcated portion 6 supports the main piece 7, it is formed to protrude (bulge) outward from the portion of the elevating pipe 4 that is inserted into the support column 3. The neckpiece 7 constitutes a part of the electric fan main body 5, and swingably supports an electric motor section 8 that drives the blower blades. The blower blade is covered with a guard body 9.

On both sides of the inner surface of the column 3, a lifting guide portion 11 is formed by a rib extending in the lifting direction of the lifting pipe 4. A support rib 12 is formed at the upper part of the inside of the pillar 3 to stably support the lifting pipe 4 at the upper part of the pillar 3. A decorative ring 13 is fitted into the opening at the upper end of the column 3, and a mounting protrusion 14 of the ring 13 engages with a hanging elastic locking claw piece 15.1G of the ring 13 inside the upper end of the column 3. An engaging portion 17 is formed.

A notch 18 is formed at the rear of the upper end of the column 3.
A protrusion 19 is formed by ribs and protrusions on both sides.

The ring body 13 is made of synthetic resin, and has an outer shape and dimensions that substantially match the inner surface of the support column 3, and an inner shape that substantially matches the outer shape of the lifting pipe 4.

Engagement portions 17 in the strut 3 are located at four locations on both the front and rear sides of the ring body 13.
A hanging elastic locking pawl piece 15, 16 is formed which engages with. The hanging elastic locking claw pieces 1G also serve as protrusions that clamp the protrusions [9] on both sides of the notch 18 of the support column 3 from the outside. By holding the protrusion 19 between the locking claw pieces 16 as protrusions,
The upper edge of the notch 18 is opened to reinforce the easily flexible structure.

In addition, the protrusion 19 is a protrusion, a protrusion is formed separately from the locking claw piece 16, a groove is provided in the protrusion in the vertical direction, and the protrusion is inserted into the groove. may be engaged with the groove of the protrusion.

A portion of the ring body 13 corresponding to the notch 18 has a notch]8
A mounting piece 20 that fits snugly is provided vertically. Mounting piece 20
A locking/disengaging body 21 is attached to the locking recess formed in the lifting pipe 4. The retaining recess of the lifting pipe 4 is formed at a position where the locking and disengaging body 21 engages when the lifting pipe 4 descends the most and when it rises the most with respect to the support column 3, thereby preventing the lifting pipe 4 from being accidentally removed. and prevent the descent. The engaging/disengaging body 21 has pivots 22 protruding from both sides of the center, and mounting pieces 200 inside both sides.
It is pivoted on a pivot 22. The operating button 23 of the engaging/disengaging body 21 protrudes from the opening 24 of the attachment piece 20, and the working claw body 25 of the engaging/disengaging body 21 projects toward the lifting pipe 4. A spring body 26 is attached to one side of the pivot 22 to bias the locking/disengaging body 2 in the locking direction. By incorporating the detachable body 21 into the ring body 13 and fitting the ring body 13 to the support column 3, the assembly of the support column 3, the ring body 13, and the detachment body 21 can be easily completed. When the elevating pipe 4 is inserted inside the ring body 13, the locking claw pieces ]5, ]6
By preventing the elastic deformation of the ring body 13 by the lifting pipe 4, the ring body 13 will not come off even if a force is applied to the ring body 13 in the direction of disengaging it when the engaging and disengaging body 21 engages with the lifting pipe 4. There isn't.

Note that in this structure, the mounting piece 20 is integrally formed with the ring body 13 in order to improve the efficiency of assembly.
It may be a structure in which they are fitted together and pressed by the ring body 13 so as not to come off.

A hook portion 32 is formed on the front surface of the upper end of the support column 3. The hook portion 32 hooks and supports one end of a spring-like constant force spring 31 that urges the lift pipe 4 in the upward direction. The ring body 13 abuts against the upper part of the hook part 32, so that the constant force spring 31 is attached to the hook part 32.
It will not come off easily.

A spring bearing part 33 is formed at the lower part of the lifting pipe 4 to support the coil part of the constant load spring 31, and in this structure, it is formed as a separate member. The spring receiver part 33 has a connecting part 36 that is fitted into the lower end of the lifting vibrator 4 and in which the claw 34 engages with the engagement hole 35 of the lifting pipe 4. The spring receiver has a braking tongue piece 37 vertically disposed at the front part of the part 33, which is wound around the coil part of the constant load spring 31 and generates a braking force between it and the coil part.

The braking tongue piece 37 is formed to have approximately the same width as the constant load spring 31. A spring support frame 38 is formed in the lower part of the spring support portion 33 for the brake tongue piece 37, surrounding the coil portion and supporting both sides thereof. On both sides of the spring receiver part 33, brake elevating guide pieces 39 are formed which have elasticity and expand outward. The brake elevating guide piece 39 is formed with a guide portion 40 through which the elevating guide portion 11 formed in the support column 3 is inserted. When the brake lifting guide piece 39 comes into pressure contact with the lifting guide part 11, braking is applied to the lifting and lowering of the lifting pipe 4, and the guide part 40 is guided by the lifting guide part 11, so that the lifting pipe 4 moves up and down without swinging. . The spring holder part 33 has an electrical cord 50
The electric cord 50 is clamped and fixed by forming a supporting portion 51 and fitting it into the lifting pipe 4.

Elastic locking portions 41 whose upper edges serve as engagement edges are formed on both sides of the lower portion of the lifting pipe 4. The elastic locking portion 4 is an elastic piece by forming a U-shaped cut in the lifting pipe 4, and a pair of triangular protrusions on the outer surface to form a locking edge. A guide groove 42 is formed between the triangular protrusions, and the guide groove 42
is guided by a lifting guide portion 11 formed on the inner surface of the support column 3.

When attaching the lifting pipe 4 to the column 3, since the two prongs 6 at the upper end are large, it is not possible to insert the base 2 into the column 3 from the side of the base 2. Insert it. The lifting pipe 4 is inserted into the column 3 according to the procedure shown in Figs. 1, 2, 5, and 6, and the state shown in Figs. 7, 8, 9, and 10 is achieved. This completes the process.

As shown in FIG. 1, the brake tongue piece 37 is brought into contact with the constant force spring 31 and pushed in. Next, as shown in FIG. 5, the brake lifting guide piece 39 is bent inward and inserted into the ring body 13. do.

In this state, when the lifting pipe 4 is pushed into the column 3, the sixth
As shown in the figure, as the elastic locking portion 41 bends inward,
Can be pushed.

When the insertion of the elevating pipe 4 into the support column 3 is completed, the elastic locking portion 41 returns to its original position with elasticity. An engaging part 43 is formed by a collar in the upper part of the column 3, and an elastic locking part 41 is connected to the engaging part 4.
3, the lifting pipe 4 will not come out from the support 3.

Note that the present invention is not limited to the structure described above, and can be implemented by changing the shape, material, and structure using well-known techniques.

(G) Effects of the Invention The present invention improves ease of assembly by forming a notch in the column and attaching the engaging and disengaging body to the elevating pipe with a mounting piece. By holding the ridges on both sides,
The notch can be prevented from expanding, and the upper part of the column will not expand and the mounting piece and ring body will not come off when the lifting pipe goes up and down.

[Brief explanation of drawings]

The figures show the present invention; FIG. 1 is an exploded vertical right side view of the main part, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the lower part of the lifting pipe in FIG. 1, and FIG. 4 is a cross-sectional view of the lifting pipe. The disassembled vertical right side view of the lower part, Figures 5, 6, and 7 are process diagrams showing the insertion of the lifting pipe into the column, Figure 8 is a longitudinal sectional front view of the main part, and Figure 9 is a longitudinal section of the column. Right side view of the main part, Figure 10 is a vertical right side view of the main part, Figure 11 is a right side view of the upper part of the column, Figure 1 is a right side view of the main part.
Figure 2 is a cross-sectional plan view of the same, Figure 13 is an exploded longitudinal right side view of the column -1 =, Figure 14 is an exploded perspective view of the upper part of the column, and Figure 14 is an exploded perspective view of the upper part of the column.
FIG. 5 is a perspective view of the electric fan. 2... Base, 3... Support, 4 Elevating pipe, 5 Main body of treetop fan, 11... Elevating guide part, ] 3... Ring body, 15
・Latching claw piece, 16...Latching claw piece (protrusion), 18...
Notch, 19...Protrusion, 20...Mounting piece, 21...
Engagement/detachment body, 31... Constant load spring, 32 - Hook part, 33
The spring receiver is a part, 41... elastic locking part, 42... guide groove, 43... engaging part.

Claims (1)

[Scope of Claims] 1. A lifting pipe that supports the main body of the equipment at its end, and a base protruding from a support that supports the lifting pipe in elevation;
A notch is formed at the end of the support, and protrusions are formed on both sides of the notch on the inner surface of the end of the support. The ring body is equipped with a ring body through which the lifting pipe is inserted, and the ring body has a mounting piece that fits into the notch and attaches the locking/detachable body. A lifting device formed with clamping protrusions. 2. A lifting pipe that supports the main body of the equipment at its end, and a base protruding from a support that supports the lifting pipe when raised and lowered;
It includes a ring body attached to the end of the column and a detachable body attached to a notch formed at the end of the column, protrusions are formed on both side edges of the notch of the column, and a ring body is provided with a ring body attached to the edge of the column. A lifting device formed with a protrusion that engages with a protrusion of a notch.