JPS5932792Y2 - Equipment lifting support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device that supports a device such as an electric fan so that it can be raised and lowered.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes an electric fan having the proposed device, which includes a base 3 with a support 2 protruding thereon and internally containing electrical components, an elevating pipe 4 inserted into the support, and a neckpiece 5 connected to the tip of the pipe. It consists of a fan main body 6 which is attached so that the angle of elevation and elevation can be adjusted.

The main body consists of an electric motor 7 whose operation is controlled by the electrical components, a blade 8 attached to the rotating shaft of the electric motor, and front and rear guards 9 that cover the front and rear of the blade.

A bifurcated supporting metal fitting 10 is attached to the lower end of the lifting pipe 4, and a constant force spring 11 is wound around the metal fitting 10, and a lever 12 is pivotally supported.

A recess 13 is formed in the upper part of the column, and a cylindrical hole 14 through which the pipe 4 is inserted is formed in the center of the bottom of the recess.

A locking portion 15 for locking one end of the constant force spring 11 is formed on the bottom surface of the recess.

Therefore, the lifting pipe 4 inserted into the support column 2 is urged upward by the spring 11, and is balanced with the weight of the main body 6.

A plate-shaped stopper 17 having an insertion hole 16 slightly larger than the pipe diameter is inserted into the protruding side of the pipe 4, and
A spring 18 is inserted to urge the stopper 17 upward.

The spring 18 is held in contact with the bottom surface of the recess 13 while being fitted into the pipe.

A semi-circular notch 20 is formed at the upper side edge of the recess 13 to hold the operating shaft 19 that comes into contact with one end edge of the stopper 17 .

Further, a lip 21 is formed in the recess 13 at a portion opposite to the notch 20, and a quarter-semicircular notch 22 is formed at the upper edge of the lip 21.

Further, a pair of lips 23 are formed in the recess 13 so as to sandwich the notches 20 and 22, and connect the lip 21 with the inner surface of the recess.

The upper edge of the lip 23 has an inclined surface 2 facing downward toward the opposite surface of the lip.
4 is formed.

The operation shaft 19 includes a knob 25 located outside the support, a cylindrical shaft 26 pivotally supported by the notch 20, and a cylindrical shaft 26 located outside the column.
It consists of a square shaft portion 27 located above the space between the pair of ribs 23, and a semi-cylindrical cam portion 28 with a cut section that abuts the upper edge of the lip 21 and the stopper 17.

The recess 13 is closed by a cover 30 in which an insertion hole 29 for the pipe 4 is formed.

A semi-circular notch 3 is provided on the side edge of the cover 30 and comes into contact with the cylindrical shaft portion 26 and forms a bearing together with the notch 20.
A hanging wall 32 having a shape of 1 is formed.

On the lower surface of the cover 30 is a 1 that holds the square shaft 27.
A pair of elastic pieces 33, a hanging piece 34 formed with a semi-circular notch that abuts the circular arc surface of the cam portion 28, and a hanging piece that presses against the spring 18, which is the other end of the stopper 17. 3
5 is formed.

Therefore, when the cover 30 is attached to the support column 2, the other end of the stopper 17 is pressed by the hanging piece 35 against the spring 18, and one end of the stopper 17 is pushed up by the spring 18, so that the stopper 17 is The insertion hole 16 contacts the pipe 4, and its wedge action prevents the pipe 4 from moving upward.

In this state, the flat portion of the cam portion 28 is in contact with one end of the stopper 17, and the cam portion 28 is retracted from the stopper 17.

Further, when the cover 30 is attached to the support, the elastic piece 3
The free ends of 3 are guided by the inclined surfaces 24, 24 of the lips 23, 23 and are abutted and locked to the lips 23, 23,
Since the elastic piece 33 comes into contact with the flat part of the square shaft part 27 and clamps the square shaft part 27, the operation shaft 19 is maintained in that state unless a large external force is applied to rotate it. .

When the operating shaft 19 is rotated by holding the knob portion 25, the flat portion of the cam portion 28 is in contact with the upper edge of the rib 21, so that the quarter-semi-circular notch 22 is located. It can only be rotated a quarter turn in the direction.

When the operating shaft 19 is rotated by a quarter turn, one end of the stopper 17 is pushed down by the cam portion 28 and becomes horizontal, the insertion hole 16 is unlocked from the pipe 4, and the pipe 4 is freely raised and lowered. can.

When the operating shaft 19 is turned a quarter turn, the elastic piece 3
3, the corner of the square shaft part 27 contacts and pushes the elastic pieces 33 apart, and then the elastic pieces 33 again come into contact with different flat parts of the square shaft part 27, and the operation is performed in a quarter-rotation state. Hold the shaft 19.

Since the elastic piece 33 is pushed out with its free end locked by the lip 23, the rotational force required to rotate the operating shaft is large, and the rotational force required to rotate the operating shaft 19 is large. As described above, this project consists of an elevating pipe with the main body of equipment attached to the upper end, a base protruding from a column that inserts and supports the pipe, and a spring body that urges the pipe upward. a plate-shaped stopper installed in a recess formed in the upper part of the support and biased by a spring for locking the pipe in an appropriate position; and an operating shaft for releasing the stopper from the pipe; a cover for the concave portion; the operating shaft includes a cam portion that presses the stopper when the shaft rotates; a square shaft portion; and a knob portion; An elastic piece is integrally formed in contact with the elastic piece, and a lip is formed on the other side to which the free end of the elastic piece is locked, making it easy to assemble the stopper and the operating shaft, etc. The elastic force applied during the rotation operation is large and the operation can be performed crisply.

Furthermore, since the elastic piece and lip that hold the operating shaft are integrally formed with the support column, the number of parts does not increase and the structure is simple, resulting in great practical effects.

[Brief explanation of drawings]

1 is a side view of the electric fan, FIG. 2 is an enlarged sectional view of the main part, FIG. 3 is an exploded perspective view of the main part, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 6... Fan main body, 4... Lifting pipe, 2... Pillar, 3... Base, 11...
... Constant force spring (spring body), 18 ... Spring, 17 ... Plate stopper, 19 ... Operation shaft, 28 ... Cam 27... Square shaft part, 25... Knob part, 33... Elastic piece, 30... Cover 13... Concave part ( Storage section), 23...Rep.

Claims (1)

[Scope of utility model registration request] a lifting pipe with a main body of equipment attached to the upper end; a base protruding from a pillar for inserting and supporting the pipe; a spring body for urging the pipe upward; and a recess formed in the upper part of the pillar. A plate-shaped stopper biased by a spring that locks the pipe in an appropriate position, an operating shaft that releases the engagement of the stopper with the pipe, and a cover for the recess, the operating shaft being connected to the shaft. a cam portion that presses the stopper when rotated;
It consists of a square shaft part and a knob part, and one of the recess or the cover is integrally formed with an elastic piece that comes into contact with the square shaft part, and the other side is formed with a lip to which the end of the elastic piece is locked. Elevating and lowering support device for equipment.