JPS6141209B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electric suction spout, and in particular to an electric suction suction for a carpet that uses a rotating brush body to scrape up fibrous dust such as lint on the carpet. Regarding.

[Conventional technology]

In order to make it possible to clean the walls of the conventional electric suction spout for carpets, an auxiliary rotating brush is installed coaxially outward from the main rotating brush body, and the gap between the end face of the auxiliary rotating brush and the side wall of the suction body is reduced. Although the structure is designed to be small and widen the cleaning area as much as possible, if long fibers such as lint get tangled with the brush, as the auxiliary rotating brush rotates, the lint will gather at the center of the end face of the auxiliary rotating brush, and the main body will be damaged. This has disadvantages such as yarn accumulation between the bearing and the side wall, increased rotational load loss, decreased rotational speed, and shortened life due to lack of oil in the bearing due to heat generation. (Refer to Japanese Unexamined Patent Publication No. 104629/1983) [Problems to be Solved by the Invention] Therefore, in order to eliminate the above-mentioned drawbacks, the present invention interposes a sealing body made of an elastic material between the end face of the auxiliary rotating brush and the side wall of the main body. In addition, a prevention protrusion is provided on the inner wall of the mouthpiece body to prevent lint from getting entangled directly with the seal body, thereby eliminating problems such as a drop in rotational speed due to an increase in load due to lint entering the gap. To provide an electric suction mouthpiece for a carpet in which the rotating brush and the seal body rotate without any trouble due to sliding, and the seal body is always able to prevent lint from entering in the best condition. .

[Means to solve the problem]

In the present invention, a seal body made of an elastic member having a substantially conical shape is fitted and supported at the end of the auxiliary rotating brush, a metal plate that comes into contact with the outer circumference of the seal body is provided in the side wall of the mouthpiece body, and a protrusion is attached to the auxiliary rotating brush. It protrudes to the side and covers the gap between the auxiliary rotating brush and the metal plate.As mentioned above, the protrusion first prevents lint from entering the gap, and then the lint that has passed through the protrusion is blocked by the lint. It has a double structure that is blocked by a seal body.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

First, to describe the overall configuration of FIG. 3, the suction body 1 is equipped with an electric motor, a main rotating brush body 2, a duct 7, etc., a suction port 9 and an auxiliary rotary suction port 11 are opened at the front of the lower surface, and a suction port 9 and an auxiliary rotary suction port 11 are opened at the rear. A connecting pipe 13 is installed which communicates with the suction port 9 through the duct 7 and is rotatably connected in the front-rear direction of the main body. The connecting pipe 13 is connected to an extension pipe (not shown) that is continuous with the main body of the vacuum cleaner through a clamp portion (not shown). Main rotating brush body 2 and auxiliary rotating brush 4
is the suction port 9 on the lower front part of the suction main body via the bearing 8.
and is supported by the auxiliary suction port 11. A large pulley 15 is formed at one end of the main rotating brush body 2, and power is transmitted from a small pulley 17 of the electric motor 5 via a belt 19. At the end of the large pulley 15, a long integral brush body shaft 6 that penetrates the brush body protrudes, and the end is supported by a flat bearing made of oil-impregnated alloy or the like. It is held in a holding case (not shown) of the mouthpiece body 1. Next, referring to Figures 1 and 2, the brush body shaft 6 protrudes long on the side opposite to the pulley of the main rotating brush body 2, and a bearing 8 made of a ball bearing is press-fitted into the end of the main rotating brush body 2. The bearing cover 10 is fitted onto the supported outer surface, and the bearing cover 10 is supported by the protruding ribs 12. The brush body shaft 6 has a threaded portion 14 protruding from the end surface of the bearing 8, and the auxiliary rotating brush 4 is supported by a nut 16 on the threaded portion 14. A substantially conical seal body 20 made of an elastic material such as rubber or soft vinyl chloride is fixed to the outer periphery 18 of the end of the auxiliary rotating brush 4, and since it is rotated against the seal body 20, frictional resistance is reduced. A metal plate 24 for the purpose of reducing frictional resistance is installed on the inner wall 35 of the mouthpiece body 1 made of a large resin, and the bent part 25 in the direction of the auxiliary suction mouth is appropriately moved inward to the extent that it does not hit the auxiliary rotating brush 4. While bending, the outer periphery of the seal body 20 is prevented from coming into contact with the bent portion, and a claw is provided on a part of the metal plate 24 to fit and support the mouthpiece body, so that the outer periphery 26 of the seal body 20 is attached to the metal plate 24. It has a sliding structure that contacts the surface evenly. Said seal body 2
0 to the auxiliary rotary brush 4 includes four protrusions 28 formed on the inner periphery of the base of the seal body 20, and four protrusions 28 and fitting grooves 30 formed on the outer periphery 18 of the end portion of the auxiliary brush 4. The protrusions 28 and the grooves 30 are fitted and supported in the same way. It also prevents damage to furniture during cleaning and the metal plate 2.
4. A bumper 32 made of a soft material such as vinyl chloride is wrapped around the mouthpiece body 1 in a band shape to hide the claws for support.

In the embodiment of the present invention, the auxiliary rotating brush 4 is designed to eliminate the cause of decreased functionality by eliminating the lint accumulation that conventionally occurred due to a gap between the auxiliary rotating brush 4 and the side wall of the mouthpiece body 1. The seal body 2 is placed in contact with a metal plate 24 provided on the side wall of the mouthpiece body.
0 is fitted and supported to eliminate the above-mentioned gap, thereby eliminating the cause of thread accumulation. Furthermore, the purpose of the auxiliary rotating brush 4 is to clean the edges of walls, and if there is a loose thread at the end of the carpet, when it is wound up, it will cause the elastic seal body 20 to have a waist. The state in which I arose occurs. This causes damage to the seal body 20 and a phenomenon in which threads become trapped. Here, in order to prevent the intrusion of thread waste, which is the object of the present invention, a protrusion 34 is provided on the inner wall 35 of the suction mouth body on the outside of the seal body. This effect can be expected to cause the thread to break, and as a result, the lip of the seal body 20 will not be squeezed by the long thread of several centimeters, making it possible to prevent damage to the seal body 20 and thread pooling, resulting in a significant performance improvement. It is measured in

The present invention provides a projection 3 on the inner wall 35 of the mouthpiece body 1.
4, and the workability is good because a stacking method can be used during assembly work.

〔Effect of the invention〕

According to the present invention, the following effects can be expected.

(b) Since the outer surface of the auxiliary rotating brush is provided with an annular seal extending toward the inner wall of the mouthpiece body and in contact with the metal plate, it is possible to prevent lint, etc. from entering the outer gap of the auxiliary rotating brush. This reduces the friction at the tip of the seal body.

(b) Since a protrusion is provided on the inner wall of the mouthpiece body on the outside of the seal body, it is possible to more completely prevent lint and the like from entering the gap between the auxiliary rotating brush and the metal plate.

(c) If there is a loose thread at the end of the carpet when cleaning the wall, when it is caught, the elastic seal body will sag. This will cause damage to the sealing body and the formation of threads, but the protrusions provided on the inner wall of the present invention or the bent parts of the metal plate can be expected to break the threads, resulting in threads that are several centimeters long. There is no phenomenon in which the lip of the seal body is constricted by the thread, and damage to the seal body and thread accumulation can be prevented, resulting in a significant improvement in performance.

(d) Therefore, according to the present invention, regardless of the state of the fibers scattered on the carpet, it is also possible to catch the loose threads of the carpet that are tied to the carpet. The auxiliary rotating brush is easy to assemble, and the auxiliary rotating brush always operates in the best condition, resulting in long-term stable function.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of another embodiment, and FIG. 3 is a full longitudinal sectional view of an electric suction port. 2...Main rotating brush, 4...Auxiliary rotating brush,
20...Seal body, 24...Metal plate, 25...Bend portion, 34...Protrusion.

Claims (1)

[Scope of Claims] 1. Consisting of a suction body, a rotating brush body and an auxiliary rotating brush body provided on the suction body, a suction port opening on the lower surface of the suction body is provided, and the rotating brush body and the auxiliary rotating brush are arranged on the same axis so that the outer peripheries of both brush bodies protrude from the suction port to the lower surface of the suction body, and the outer surface of the auxiliary rotating brush is close to the inner wall of the suction body. An annular seal body extending toward the inner wall of the mouthpiece body is provided on the outer surface, a metal plate is attached to the inner wall of the mouthpiece body where the tip of the seal body contacts, and the An electric suction mouthpiece for a vacuum cleaner characterized by a protrusion provided on the inner wall of the suction body. 2. In what is stated in claim 1,
An electric suction mouth for a vacuum cleaner characterized in that a protrusion provided on the outside of a seal body is formed by bending a metal plate.