JPH032798Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a lifting device for equipment such as electric fans, bonnet dryers, microphone stands, and lighting devices.

(b) Conventional technology As a technology that precedes this invention,
There is a lifting device described in Japanese Patent No. 189995. The lifting device described in this publication is used for electric fans, and has a lifting rod protruding from an opening formed at the upper end of the support, and an annular cap body attached to the opening. Fixed.
In addition, a separate friction body is used to prevent rattling due to the dimensional difference between the annular cap body and the lifting rod and to brake the lifting rod.

(c) Problems to be solved by the invention In the conventional technology, the number of parts increases, the structure becomes complicated, and assembly efficiency decreases.

The technical object of the present invention is to provide an elevating device which has a simple structure and which can reliably attach an annular cap body to an opening and prevent rattling of an elevating rod.

(d) Means for solving the problem The present invention involves inserting and supporting an elevating rod into an opening formed in the frame of a device such as an electric fan, and using an annular cap attached to the opening with an elastic piece that elastically presses against the elevating rod. This problem can also be solved by means in which the claw portion that engages with the engaging portion inside the opening is formed as an elastic piece.

(E) Function In this invention, the elastic piece of the annular cap body presses against the lifting rod to prevent rattling of the lifting rod, and the claw portion strongly engages with the engaging portion by pressing the elastic piece against the lifting rod. It is something.

(F) Embodiment The figure shows an embodiment of the present invention showing a lifting device for an electric fan 1 as a specific example.

Figures 1, 2, and 4 are views showing the main parts of the present invention, and Figure 1 shows the part where the annular cap body 4 is attached to the upper opening 3 of the support column 2 and the lifting rod 5 is inserted. 2 is a cross-sectional view before the lifting rod 5 is inserted, and FIG. 4 is an exploded perspective view of the support column 2 and the annular cap body 4.

FIG. 3 is a perspective view of a fan 1 comprising a base 6 having a protruding support column 2 that supports a lifting rod 5 up and down, and a fan main body 7 supported at the upper end of the lifting rod 5. FIG. FIG. 5 is a side sectional view of the column 2 and the base 6, and FIG. 6 is a front sectional view of the upper portion of the column 2.

FIG. 7 is a side sectional view showing the process of removing the bottom plate 8 from the base 6 and attaching the L-shaped support rod 10 equipped with a constant force spring 9, and FIG. 9 is a perspective view showing the relationship between the support rod 10 and the temporary holding part 11 formed on the base 6, and FIG. FIG. 2 is an exploded perspective view showing the relationship between a spring receiver 12 that holds a support rod 10 and a support rod 10. FIG.

The electric fan main body 7 includes an electric motor such as an induction motor or a DC brushless motor, a blower blade driven by the electric motor, a guard body that covers the blower blade, a neck piece that supports the electric motor so that it can swing freely, and an elevation angle of the neck piece. It consists of an adjustable intermediate neck body. The intermediate neck body is mounted and supported on the upper end of the lifting rod 5.

The pillar 2 and the base 6 are integrally molded from synthetic resin.
A bottom plate 8 that closes the lower opening of the base 6 is molded from synthetic resin, and the bottom plate 8 is fixed to the base 6 with screws 14 screwed into bosses 13 protruding from the base 6.
A guide rib 15 for guiding the spring receiver 13 up and down, and a guide support rib 16 for the L-shaped support rod 10 are formed on the inner surface of the column 2. A rib-like locking portion 17 for locking the upper end of the support rod 10 and a support ridge 18 for fitting and supporting the annular cap body 4 into the opening 3 are formed on the upper inner surface of the column 2. The lower end of the support ridge 18 is an elastic piece 1 formed on the annular cap body 4, which will be described later.
The engaging portion 21 of the claw portion 20 of No. 9 is used. A regulating protrusion 22 is formed on the inner surface of the upper part of the column 2 to regulate the upward movement of the lifting rod 5. An opening 23 in the upper rear wall of the column 2 is used for attaching a locking body 24 that holds the lifting rod 5 in the lowest position.

The elastic piece 19 formed on the annular cap body 4 is formed in a dogleg shape protruding inwardly, and the virtual cylinder formed by the innermost position surface of the elastic piece 19 is smaller than the outer shape of the lifting rod 5. Therefore, when the lifting rod 5 is inserted into the annular cap body 4 from the state shown in FIG. 2, the elastic piece 19 is deformed against the elasticity so as to be pressed against the inner surface of the support column 2, resulting in the state shown in FIG. 1. . At this time, the tip claw portion 20 of the elastic piece 19 is more strongly engaged with the engaging portion 21, and movement inward to disengage from the engaging portion 21 is prevented by the lifting rod 5.
Since the lifting rod 5 is supported by the elasticity of the elastic piece 19, rattling of the lifting rod 5 due to the gap formed between it and the annular cap body 4 during lifting and lowering is prevented. In addition, an appropriate frictional force is generated between the elastic piece 19 and the lifting rod 5. The annular cap body 4 can be reliably attached without using any jig by simply fitting the annular cap body 4 elastically into the opening 3 of the support column 2 and inserting the elevating rod 5 therethrough.

The elevating rod 5 is molded from synthetic resin, and has a flange 25 formed at its lower end that abuts against the regulating protrusion 22 during upward movement to prevent further upward movement. The spring receiver 12 is molded from synthetic resin, and includes an annular wall 26 that inserts and fits into the lower end of the lifting rod 5, a flange 27 that abuts the flange 25, and a frame 28 that accommodates the spiral portion of the constant force spring 9. and the support tongue part 29 that is caught in the spiral part.
It consists of. A groove portion 30 is formed in a portion of the frame portion 28 that corresponds to the guide rib 15. Cutouts 31 and 32, through which the guide ribs 15 are inserted, are formed in the flanges 25 and 27, which are extensions of the groove 30. Tsuba 25, 2
Cutouts 33 and 34 are formed in the rear edge of the support column 7 to release and guide a constant force spring 9 attached to a support rod 10 attached along the inner rear surface of the support column 2. Spring receiver 12
A notch is formed on both opposing sides of the annular wall 26, and the part sandwiched by the notch extends in an inverted V shape, and an elastic locking piece 35 is inserted along the inner surface of the lifting rod 5. The opposite elastic holding part 36 is formed. A protrusion 37 is formed on the elastic locking piece 35, and the protrusion 37 engages with an engagement hole 38 of the lifting rod 5. An electric cord 39 inserted into the lifting rod 5 is held between the tips of the elastic holding portions 36. By inserting and mounting the spring receiver 12 on the lifting rod 5, the electric cord 39 can be held by the elastic holding part 36, and the reaction force of the holding force of the elastic holding part 36 against the electric cord 39 moves the elastic locking piece 35 up and down. By pressing against the inner surface of the rod 5, the protrusion 3
7 to the engagement hole 38 becomes more reliable.

L-shaped support rod 10 with a constant force spring 9 fixed to the upper end
is molded from sheet metal, and there is a boss 13 at the lower end bent part.
A hole 40 is formed which fits into the hole 40. Temporary holding part 11
is a U-shaped rib 41 surrounding the bent portion of the lower end of the support rod 10.
An engaging pawl 42 is formed at the lower end of the rib opposite to the leading edge. Notches 43 are formed at the corners so that each wall of the U-shaped rib 51 can be bent individually. The constant force spring 9 and the support rod 10 are connected to the support column 2.
When mounting the support rod 10 on the base 6, first insert the support rod 10 into the support column 2 as shown in FIG.
Store it in. In this state, the base 6 and the support column 2 are not attached to the lower end of the support rod 10. Next, the support rod 10 is pushed against the elasticity of the constant force spring 9, and its tip is inserted and locked into the locking part 17, and
The boss portion 13 is inserted into the hole 40 at the lower end and at the same time is engaged with the engaging claw 42. In this state as shown in FIG.
By fixing to , the support rod 10 is also securely fixed.

The present invention is not limited to the above-mentioned implementation structure, but the structure and its associated effects can be implemented in various structures within the range of departure. The shape of the elastic piece 19 formed on the annular cap body 4 may be arch-shaped or U-shaped instead of dogleg-shaped. Further, the formation position of the claw portion 20 is not limited to the tip of the elastic piece 19, but may be in the middle portion.
Furthermore, the shape of the annular cap body 4 itself can be changed in various ways.

(g) Effects of the invention The present invention eliminates the need for a jig for mounting by elastically engaging the annular cap body with the opening, and by elastically pressing the elastic piece of elastic engagement against the lifting rod. This prevents rattling, and furthermore, the claw part strongly engages with the engaging part due to the pressure contact of the elastic piece to the lifting rod.
The engagement between the claw portion and the engaging portion can also be ensured, and the annular cap body can be reliably attached to the opening of the device frame.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a sectional view of the main part, Fig. 2 is an exploded sectional view of the main part, Fig. 3 is a perspective view of the electric fan, and Fig. 4 is an exploded perspective view of the main part. , Figure 5 is a side sectional view, Figure 6 is a front sectional view of main parts, and Figure 7 is a side sectional view.
The figure is a side sectional view of the assembled state, Figure 8 is a side sectional view with the bottom plate removed, and Figure 9 is a perspective view of the support rod and temporary holding part.
FIG. 10 is an exploded perspective view of the lower part of the lifting rod. 2... Support (equipment frame), 3... Opening, 4...
Annular cap body, 5... Lifting rod, 6... Base (equipment frame), 19... Elastic piece, 20... Claw portion, 21
...Engagement part.

Claims (1)

[Scope of utility model registration request] A lifting rod is inserted and supported in an opening formed in an equipment frame body, and an annular cap body is attached to the opening, and an elastic piece is formed in the annular cap body to be inserted along the inside of the opening and elastically press against the lifting rod, A lifting device in which an elastic piece is formed with a claw portion that engages with an engaging portion formed inside an opening.