JPS5824132B2 - Vacuum cleaner cord winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a manual cord reel, and an object of the present invention is to provide a mechanism that applies an appropriate brake when pulling out the cord and can smoothly reel in the cord. purpose.

Conventionally, with manual cord reels, if you pull out the cord suddenly, the cord reel will rotate more than necessary due to inertia, and the cord that does not come out of the aircraft will spread out inside the cord reel, causing damage to the interior walls of the aircraft. This had a major problem in that the cord reel was locked to the fuselage due to strong pressure and the cord could not be pulled out.

In particular, the above problem is seen in large cord reels with a large inertial force, but the present invention can solve the above problems even for such large cord reels, and an example thereof is attached below. The drawings will also be explained.

In the figure, reference numeral 1 denotes a main body with a cord reel 2 installed in the upper part.

A knob 3 is rotatably provided on the cord reel 2.

Reference numeral 4 denotes a cord reel case, which is fixed to the cord reel 2 and is rotatable about the shaft 5.

A rail 6 is provided on the cord reel case 4 and is made of a conductive material.
It is stuck to.

Therefore, a sliding contact is made between the rail 6 and the contact 7, and the current is energized.

The bulkhead 8 is fixed to the upper body 1 and the shaft 5 is fixed by a screw 9.

Reference numeral 10 denotes a power cord, one end of which is electrically connected to the rail 6, and a plug 11 fixed to the other end.

A brake roller 12 is made of an elastic material such as rubber, and is configured to be rotatable and slidable around a shaft 13.

14 is the middle body, supporting rubber 16 and 17 for the electric blower 15
Built-in via.

Further, the partition wall 8, the upper body 1, and the middle body 14 are fixed together.

Reference numeral 18 denotes an exhaust port formed between the upper body 1 and the middle body 14, which discharges the exhaust gas generated by the electric blower 15 into the atmosphere.

Reference numeral 19 denotes a rubber bag, which is made of an elastic body and supported by a rubber support plate 20.

Further, a bag 22 is sewn to the bag rubber 19, and the bag 222 collects dust and separates it from air.

The bag rubber 19 makes air tight between the middle body 14 and the lower body 21.

23 is an expander that maintains the shape of the bag 22; 24 is an intake port that introduces dust into the lower body 21; 25 is a running roller;
26 is a caster for traveling.

Reference numeral 27 is a foldable handshake, which is configured to be used in an upright position during transportation and folded down when using a cord reel.

Next, the structure of the braking part of the above cord reel will be explained in the third section.

This will be explained in detail using FIG.

The partition wall 8 has the brake roller 12 on its substantially horizontal surface.
Three roller housing sections 28 are provided which are open upward so that the shaft 13 can be inserted therein.

Brake roller 12 and shaft. 13 is integrally fixed.

The housing section 28 has a bearing recess 31 that supports the shaft 13, and when the cord 10 is pulled out, the brake roller 12 comes into pressure contact with the lower surface of the cord reel case 4, and the cord is rolled up.

At this time, a slope is provided so that the shaft 13 can move slightly in the horizontal direction and slightly move in the vertical direction so that the brake roller 12 slightly contacts the lower surface of the cord reel case 4.

29 is a vertical brake wall, and when pulling out the cord, it is connected to the cord reel case 4.

Due to the frictional resistance between the lower surface and the brake roller 12, the play roller 12 moves in the direction of arrow A and comes into contact with the brake roller 4.

Further, when the cord is wound in, the brake roller 12 moves in the direction of arrow B, and the contact between the brake wall 29 and the cord reel case 4 is released, and the frictional force generated by the brake roller 12 is eliminated.

30 is a side wall; 32 is a side wall having a slope smaller than that of the bearing recess 31; when the brake roller 12 moves in the direction of the arrow B, the brake roller 12 comes into contact with the brake roller 12; The bottom wall has a slope such that the contact is released.

In the above configuration, when the plug 11 is held and the cord 10 is pulled out, the cord reel case 4 rotates in the direction of arrow A.

Since the brake roller 12 is slightly in contact with the lower surface of the cord reel case 4, it moves due to frictional force.

Here, since the bearing recess 31 has a slope, the brake roller 12 comes into pressure contact with the lower surface of the cord reel case 4 and also comes into contact with the bottom wall 32.

If the lead reel case 4 continues to rotate in the direction of the arrow, it will hit the brake wall 29 and the brake roller 12
will not dig in any further.

Therefore, the cord reel case 4 is not completely fixed to the partition wall 8 via the brake roller 12, but braking is performed by causing slippage.

When pulling out the twisted cord 10, the cord reel 2 is always subjected to frictional force by the brake roller 12, so no matter how quickly you pull out the cord 10, the cord reel 2 will spin idly and the cord caught inside the main body will spread out. A crucian carp frame that fits.

When reeling, turn the knob 3, and the cord reel case 4 rotates in the direction of arrow B, and the brake wall 29
Then, the friction of the bottom wall 32 is released and the brake is released, and the brake roller 12 slightly contacts the lower surface of the cord reel case 4 according to the slope of the bearing recess 31.

As described above, according to the present invention, (1) When the cord is pulled out, the brake wall allows the cord reel to be braked by moderate slipping without biting into the cord reel case and without completely locking the cord reel case. can.

(2) When the cord is reeled in, the cord only makes slight contact with the cord reel case, so the brake roller only rotates, eliminating friction and reducing the force needed to turn the knob.

(3) By installing three brake rollers at equal intervals, the cord reel is supported on the rollers and the plane of rotation can be determined, eliminating the possibility of surface run-out. This also makes it possible to keep the stress applied to the contact points constant and prevent large deflections. etc., which not only improves the durability of the contacts, but also provides a highly reliable current-carrying effect.

(4) When the cord is wound in, the brake roller rotates, and the part that wears out due to slipping when pulling out the cord constantly changes, so that there is no uneven wear on the brake roller.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a vacuum cleaner adopting the present invention;
¥1 is an exploded perspective view of the cord reel, brake roller, and partition wall, FIG. 3 is a sectional view of the brake roller and roller storage items, and FIG. 4 is a sectional view taken along line C-C in FIG. 3. 1... Body, 2... Cord reel, 4
...Case, 5...Axis, 8...
・Bulkhead, 12... Brake roller, 13...
... shaft, 28 ... roller storage section, 29 ... brake wall, 31 ... bearing recess, 32 ... bottom wall.

Claims (1)

[Claims] 1. A cord reel with an axis positioned perpendicularly and rotatably provided with respect to the main body, and a cord reel with an axis radial to the axis of the cord reel, and a cord reel with an axis located on the lower surface of the case of the cord reel. a plurality of brake rollers that rotate in contact with each other; a roller storage section that is disposed on a horizontal surface of a partition wall adjacent to the cord reel and that accommodates a portion of the brake roller; and a roller storage section that is provided near the roller storage section; It has a bearing recess that supports the shaft of the brake roller so that the brake roller comes into contact with the lower surface of the case of the cord reel. a bottom wall that is sloped so as to contact the brake roller on the side closer to the brake wall and release the contact with the brake roller as it moves away from the brake wall; A cord winding device for a vacuum cleaner, characterized by having a width so that it can be moved. 2. The shaft support surface of the bearing recess is provided with a slope smaller than the slope of the bottom wall of the roller storage section, and the brake roller is configured to come into pressure contact with the cord reel when the cord reel is rotated in the pull-out direction. A cord winding device for a vacuum cleaner according to claim 1.