JPH02266197A - Lifting gear - Google Patents

Abstract

PURPOSE:To stabilize travel of a lifting pipe and perform a positive slip-stop as well as to improve the extent of assemblability by performing the slip-stop of the lifting pipe being inserted into a column with an elastic engaged part to be guided by a lifting guide part of the column. CONSTITUTION:In this lifting gear, there are provided a lifting pipe supporting an equipment body on the edge, and a base projectingly installed with a column 3 supporting this lifting pipe 4 for its up and down motion. Then, an engaging part 43 and a hooking part 32 supporting one end of a constant force spring are formed in an inner surface upper end of the column 3, while a lifting guide part 11 is installed on an inner surface of the column 3 extendedly in the lifting direction, and a spring receiving part housing a coil part of the constant force spring 31 and an elastic engaged part 41 being elastically engaged with the engaging part 43 and guiding it with the lifting guide part 11 both are formed in an inserting end of the lifting pipe 4. With this constitution, the lifting pipe 4 engages the elastic engaged part 41 to the engaging part 43, setting it down to a slip-stop from the column 3, and the elastic engaged part 41 is guided in the lifting direction by the lifting guide part 11 so that stable lifting motion and positive slip-stopping can be done in this way.

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 Unexamined Patent Publication No. 62-72993.

In the lifting device, the upper end of the lifting pipe is inserted through the opening on the base side of the column to support lifting and lowering. Therefore, the device main body (fan main body) cannot be attached to the upper end of the vertical pipe until after the vertical pipe is inserted into the support, and the degree of freedom in the assembly process is low, making assembly difficult.

(c) Problems to be Solved by the Invention The present invention aims to improve the assembly efficiency by inserting the lifting pipe from the tip of the support, and to provide a lifting device that stabilizes the lifting and lowering of the lifting pipe. This is an issue to be addressed.

(d) Means for Solving the Problems The present invention includes an elevator pipe that supports the main body of equipment at the end, and a base protruding from a support that supports the elevator pipe in elevation, and that engages with the upper end of the support. A lifting guide part is formed on the inner surface of the column and extends in the lifting direction, and the insertion end of the lifting pipe has an elastic lock that elastically engages with the engaging part and is guided up and down by the lifting guide part. The problem is solved by means of forming a part.

Further, the present invention is provided with an elevating pipe that supports the main body of the equipment at its end, and a base protruding from a support that supports the elevating pipe in elevation. A lifting guide part is formed on the inner surface of the column and extends in the lifting direction, and the insertion end of the lifting pipe has a spring receiving part that stores the coil part of the constant force spring, and a spring receiving part that is elastically engaged with the engaging part. At the same time, the problem is solved by means of forming an elastic locking part that is guided up and down by the up and down guide part.

In each of the above-mentioned means, the support column and the lifting pipe do not need to be cylindrical, and may be a rectangular cylinder or an elliptical cylinder. The pillar is
The cross-sectional area and shape may be the same from the upper end to the lower end, or the cross-sectional area may increase toward the lower end and the shape may change. The outer diameter of the lifting pipe is formed to be approximately the same as the inner diameter of the upper end of the support column.

(E) Function In the present invention, the lifting pipe engages the elastic locking portion with the engaging portion to prevent the lifting pipe from being removed from the support, and the elastic locking portion is guided in the lifting direction by the lifting guide portion to provide stability. Elevation and descent and reliable removal are stopped.

In addition, the present invention forms a spring receiving part at the lower part of the lifting pipe and supports the constant load spring at the two ends of the support. can be held and the lifting pipe can be attached to the support.

(f) Embodiment The present invention is based on the structure in which the present invention is adopted for the column 3 protruding from the base 2 in Kawakaze [1 shown in FIG. The configuration will be specifically explained.

The base 2 and the pillar 3 are integrally molded from synthetic resin, and the pillar 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. In order to create a sense of unity with the lifting pipe 4 and the pillar 3,
It is formed into an egg-shaped cross section. 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 clamp and pivot the neckpiece 7 so as to be able to freely adjust the angle of elevation. Since the three-pronged portion 6 supports the neckpiece 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 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. Inside pillar 3”
A support rib 12 for stably supporting the lifting pipe and 1 at the upper part of the pillar 3 is formed in a part. A decorative ring body 13 is fitted into the opening at 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 15, 16 of the ring body 13 engage with the upper end portion of the support column 3. 7 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 16 also serve as protrusions that clamp the protrusions 19 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 notch 18 is provided in the part corresponding to the notch 18 of ring body 3.
A mounting piece 20 that fits snugly is provided vertically. Mounting piece 2o
A locking/disengaging body 21 is attached to the locking recess formed in the lifting pipe 4. The locking 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 rises the most with respect to the column 3, thereby preventing the lifting pipe 4 from rising and falling inadvertently. to prevent The engaging/disengaging body 21 has pivots 22 projecting from both sides of the center, and is pivotally supported by the pivots 22 inside both sides of the mounting piece 2o. 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 2 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. The engaging and disengaging body 21 is assembled into the ring body 13, and the ring body 1
3 to the support column 3, the assembly of the support column 3, the ring body 13, and the engaging/disengaging body 2] can be easily completed. When the elevating pipe 4 is inserted inside the annular body 13, elastic deformation of the locking claw pieces 15, 16 is prevented by the elevating pipe 4, so that the elevating pipe of the engaging and disengaging body 21 is inserted into the annular body 13. Even if a force is applied in the direction of disengaging the ring body 13 from engagement with the ring body 4, the ring body 13 will not 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.
It may also be a structure in which the rings are fitted together and pressed using the ring body 3 to prevent them from coming off.

A hook portion 32 is formed on the front inner surface of the upper end of the column 3 to hook and support one end of a spring-shaped constant force spring 31 that biases the lifting 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 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. The spring receiving part 33 has 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. 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 approximately the same width as the constant load spring 31. A spring support frame 38 that surrounds the coil portion and supports both sides thereof is formed in the lower part of the spring receiving portion 33 relative to the brake tongue piece 37. 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 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. . An electrical cord 50 is attached to the spring receiving part 33.
The electric cord 50 is clamped and fixed by forming a supporting portion 51 and fitting it into the lifting pipe 4.

On both sides of the lower part of the lifting pipe 1, there are formed elastic locking parts 11 whose two edges serve as engaging edges. The elastic locking portion 11 is
(2) A U-shaped cut is formed in the descending pipe 4 to form an elastic piece, and a pair of triangular protrusions are formed 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 lifting pipe 4 is inserted into the support column 3 according to the procedure shown in Figures 1, 2, 5, and 6, and as shown in Figures 7, 8, 9, and 0. state and completes.

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 prevents the elevating pipe inserted into the support from being pulled out using an elastic locking portion guided by the elevating guide portion of the support, thereby stabilizing and ensuring the elevating and lowering of the pipe. It is possible to stop the removal, and the ease of assembly is improved.

[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.
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 section, 13...ring body,]
5 Locking 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... 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, and an engaging portion is formed at the upper end of the support; A lifting guide part is provided on the inner surface of the column and extends in the lifting direction, and an elastic locking part is formed at the insertion end of the lifting pipe to elastically engage with the engaging part and to be guided up and down by the lifting guide part. A lifting device. 2. Equipped with an elevating pipe that supports the main device at its end, and a base with a protruding column that supports the elevating pipe, and an engaging portion and one end support portion of a constant force spring are formed at the upper end of the inner surface of the column. An elevating guide portion is provided on the inner surface of the column and extends in the elevating direction, and the insertion end of the elevating pipe is elastically engaged with a spring receiving portion that accommodates a coil portion of a constant force spring and an engaging portion. An elevating device formed with an elastic locking portion that is guided up and down by an elevating guide portion.