JPH0571836B2 - - Google Patents

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.

Prior art As a technology prior to the present invention, Utility Model Application No. 63-80400
There is an electric fan lifting device described in the above publication. 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 the strut and the ring body is stabilized, the attachment and detachment body is easy to attach, and the 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 a main body of equipment at its end, a base having a protruding support for supporting the lifting pipe in elevation, and a 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. Put it on,
The problem can be solved by forming a mounting piece on the ring body that fits into the notch and attaching the detachable body, and forming protrusions on the ring body that clamp the outside of the protrusions on both sides of the notch. It is something to do. 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 present invention also solves the problem 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 column, and forming protrusions on the ring body that engage with the protrusions of the notch. It is something to be solved.

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 fitted into 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 column and locking both sides of the notch with ring bodies. There is.

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

The base 2 and pillar 3 are integrally molded from synthetic resin,
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 made of sheet metal.
It is closed with a synthetic resin backing plate. Lifting pipe 4
is molded from synthetic resin and has an external size 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 two prongs 6 clamp and pivot the neck piece 7 so that the angle of elevation can be freely adjusted. Since the bifurcated portion 6 supports the neck piece 7, it is formed to protrude (bulge) outward from the portion of the lifting pipe 4 that is inserted into the support column 3. The neck piece 7 constitutes a part of the electric fan main body 5, and swingably supports the electric motor part 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 cosmetic ring 1 is installed in the opening at the upper end of the pillar 3.
3 is inserted into the upper end of the support column 3, and a mounting protrusion 14 of the ring body 13 and a hanging elastic locking claw piece 1 of the ring body 13 are inserted into the upper end of the support column 3.
5 and 16 are formed.
A notch 18 is formed at the rear of the upper end of the column 3, and protrusions 19 are formed on both sides of the notch 18 by ribs and protrusions.

The ring body 13 is made of synthetic resin and has an external shape similar to that of the support column 3.
The shape and dimensions are made to approximately match the inner surface, and the inner shape is formed to have a shape and dimension that the outer shape of the lifting pipe 4 substantially matches.
At four locations on both the front and rear sides of the ring body 13, there are formed hanging elastic locking claw pieces 15, 16 that engage with the engaging portions 17 in the support column 3. The hanging elastic locking claw piece 16 is attached to the support column 3.
It also serves as a protrusion that clamps the protrusions 19 on both sides of the notch 18 from the outside. By holding the protrusion 19 with the locking claw pieces 16 as protrusions, the upper edge of the notch 18 is opened and the easily flexible structure is reinforced.

Note that the protrusion 19 is a protrusion, a protrusion is formed separately from the locking claw piece 16, and a groove is provided extending in the longitudinal direction on the protrusion.
The protrusion as a protrusion may be engaged with the groove of the protrusion by inserting the protrusion into the groove.

At a portion of the ring body 13 that corresponds to the notch 18, a mounting piece 20 that fits into the notch 18 is vertically provided. A locking and disengaging body 21 that locks into and locks into a locking recess formed in the lifting pipe 4 is attached to the mounting piece 20. The locking recess of the lifting pipe 4 is arranged so that the locking recess of the lifting pipe 4 is connected to the locking body 2 when the lifting pipe 4 is lowered to the lowest level and raised to the highest level with respect to the support column 3.
1 is formed at a position where it engages, and prevents the lifting pipe 4 from rising and falling inadvertently. The engaging/disengaging body 21 has pivots 22 protruding from both sides of the center, and is pivotally supported by the pivots 22 inside the mounting piece 20 on both sides. 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 21 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 lifting pipe 4 is inserted inside the ring body 13, the locking claw piece 1
5 and 16 are prevented from being elastically deformed by the lifting pipe 4, even if a force is applied to the ring body 13 in the direction of disengaging the engaging and disengaging body 21 from engaging with the lifting pipe 4, the ring body 13 will never come off.

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. In addition, the structure may be such that the ring member 13 presses the ring member 13 so as not to come off.

A hook portion 32 is formed on the front inner surface of the upper end of the support column 3 for hooking and supporting one end of a spiral spring-like constant force spring 31 that biases the lifting pipe 4 in the upward direction. By abutting the ring body 13 on the upper part of the hook part 32,
The constant force spring 31 will not come off from the hook portion 32.

A spring receiving part 33 for supporting the coil part of the constant load spring 31 is formed at the lower part of the lifting pipe 4, and in this structure, it is formed by a separate member. Spring receiving part 33
is a connecting part 36 that is fitted into the lower end of the lifting pipe 4 and the claw 34 engages with the engagement hole 35 of the lifting pipe 4.
has. A braking tongue piece 37 is vertically provided at the front part of the spring receiving part 33 and is wound around the coil part of the constant load spring 31 to generate a braking force between the coil part and the coil part. The braking tongue piece 37 is formed to have substantially the same width as the constant load spring 31. Spring receiving part 3 for brake tongue piece 37
A spring support frame 38 that surrounds the coil portion and supports both sides is formed in the lower portion of the coil portion 3. Brake elevation guide pieces 39 are formed on both sides of the spring receiving portion 33 and have elasticity that spreads outward. The brake elevating guide piece 39 has an elevating guide portion 11 formed inside the column 3.
A guide portion 40 is formed through which the guide portion 40 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. . A support portion 51 for the electric cord 50 is formed in the spring receiving portion 33, and the electric cord 50 is clamped and fixed by being fitted 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 41 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 to the elevation guide portion 11 formed on the inner surface of the column 3.

When attaching the lifting pipe 4 to the column 3, since the upper end bifurcated portion 6 is large, it is not possible to insert the base 2 into the column 3 from the side, and the spring receiver 33 is inserted through the upper end opening of the column 3. and do it. The insertion of the lifting pipe 4 into the column 3 is as shown in Figures 1, 2, 5 and 6.
The procedure shown in the figure is followed, and the process is completed with the state shown in FIGS. 7, 8, 9, and 10.

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.
Insert into ring body 13. In this state, lift pipe 4
When pushed into the support column 3, the elastic locking portion 41 bends inward, as shown in FIG.

After finishing inserting the lifting pipe 4 into the support column 3,
The elastic locking portion 41 returns to its original state with elasticity. An engaging part 43 is formed by a collar in the upper part of the column 3, and the elastic locking part 41 engages with the engaging part 43 to close the lifting pipe 4.
will not come out from pillar 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 support column and attaching the engaging/disengaging body to the elevating pipe with a mounting piece. By holding the protrusions 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 elevating 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. Exploded vertical right side view of the lower part, Figures 5 and 6
Fig. 7 is a process diagram showing the insertion of the lifting pipe into the support column, Fig. 8 is a longitudinal front view of the main part, Fig. 9 is a right side view of the main part taken longitudinally through the support, and Fig. 10 is a right side longitudinal view of the main part. Top view, Figure 11 is the vertical right side view of the upper part of the column, Figure 1
2 is a cross-sectional plan view of the same, FIG. 13 is an exploded longitudinal sectional right side view of the upper part of the support, FIG. 14 is an exploded perspective view of the upper part of the support, and FIG. 15 is a perspective view of the electric fan. 2... Base, 3... Support, 4... Lifting pipe, 5... Fan main body, 11... Lifting guide part, 13... Ring body, 15
...Latching claw piece, 16...Latching claw piece (protrusion), 18...Notch, 19...Protrusion, 20...Mounting piece, 21...Latching/detachment body, 31...Constant load spring, 32...Hook part, 33... Spring receiving part, 41... Elastic locking part, 42... Guide groove,
43...Engagement part.

Claims (1)

[Scope of Claims] 1. A lifting pipe that supports the main body of the device at its end, a base protruding from a support that supports the lifting pipe in lifting and lowering,
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 in lifting and lowering;
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.