KR200261210Y1 - Suction device for vacuum cleaner - Google Patents

Abstract

The present invention relates to an impeller cover inlet structure of a suction force generating device for a vacuum cleaner, and a suction force generating device of a conventional vacuum cleaner includes a packing for fixing the packing to prevent internal air leakage between the impeller assembly and the impeller cover. By forming an internal leak prevention means using an internal suction pipe in the holder and the impeller cover, an external suction pipe had to be additionally attached to the outside of the impeller cover to form an intake port. However, in the present invention, an impeller cover integrally with an external suction pipe and a material having high heat resistance By providing a suction force generating device for the vacuum cleaner using only the suction port packing of the component can be reduced and thereby the material cost can be reduced, and the processing cost and productivity can be improved by the reduction of the process.

Description

Suction force generator of vacuum cleaner {SUCTION DEVICE FOR VACUUM CLEANER}

The present invention relates to a suction force generating device of a vacuum cleaner, and more particularly, to a suction force generating device for a vacuum cleaner which can contribute to the improvement of the suction power and the productivity and the cost reduction according to the component reduction.

In general, the vacuum cleaner is a device that collects the foreign matter in the body (not shown) by sucking the foreign matter such as dust and the like with the air, the suction force generating device is mounted inside the main body to generate the suction force. A suction force generator for a vacuum cleaner according to an embodiment of the technique will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, a suction force generator for a vacuum cleaner includes a motor housing 10 having an inverted cup in which one end surface is opened and the other end surface is closed, and the motor housing. The rotor (20b) is coupled to the rotor (20b) and the rotor (20b) rotatably installed inside the stator (20a) and the stator (20a) having a donut-shaped cross section on an inner surface of the rotor (20b). The motor 20 is composed of a rotating shaft 25 for transmitting a rotation force generated in the, the impeller assembly 30 fixed to the rotating shaft 25 on the open end side of the motor housing 10, and the impeller assembly 30 It is composed of an impeller cover 31 coupled to the open side end surface of the motor housing 10 while wrapping.

The inner part of the impeller cover 31 is formed with an inner suction port 35b made by an inner suction pipe 31b connected to the impeller cover main body 31a and formed inward, and an inner suction pipe 31b of the impeller cover main body 31a. An inlet 35 formed of an outer suction port 35a formed by forming an outer suction pipe 34 on the outside is formed.

The impeller assembly 30 is composed of a front plate 30a and a back plate 30c spaced apart from each other and a plurality of wings 30b coupled between the front plate 30a and the back plate 30c, the front surface An intake hole 36 communicating with the suction port 35 is formed in the center of the plate 30a, and a discharge port 30d is formed between the outer periphery of the front plate 30a and the back plate 30c.

In the open end side space of the motor housing 10, a guide vane 22 for guiding the air sucked into the inlet 35 by the impeller 30 is installed, and between the guide vane 22 and the motor 20. Ventilation guide 21 is installed, the outlet 11 is formed in the closed end of the motor housing 10.

In the suction force generator of the conventional vacuum cleaner configured as described above, when power is supplied to the motor 20 to rotate the rotor 20b, the impeller assembly 30 coupled to the rotating shaft 25 rotates, and the impeller In the assembly 30, the suction force is generated in the intake hole 36 formed in the front of the front plate (30a) by a plurality of wings (30b) formed between the front plate (30a) and the back plate (30c), accordingly External air is sucked into the impeller cover 31 through the suction port 35 to be discharged inside the discharge port 30d between the front plate 30a and the rear plate 30c, and the internal discharged air. Is discharged through the outlet 11 formed in the closed end of the motor housing 10 through the periphery of the motor.

In order to obtain the maximum suction force of the conventional suction force generator, the air sucked through the suction port 35 should flow only between the front plate 30a and the back plate 30c of the impeller assembly 30. Since there is a gap between the front plate 30a and the impeller cover 31, the air to be sucked also flows into this gap, which may lower the suction efficiency.

Therefore, in the related art, the air sucked through the suction port 35 is formed in the inner suction pipe 31b of the impeller cover 31 to form a gap between the front plate 30a of the impeller assembly 30 and the impeller cover 31. It is provided with an internal leakage preventing means for preventing the air from leaking through.

The inner leakage preventing means is a ring-shaped packing (33) fitted to the outer peripheral surface of the inner suction pipe (31b), as shown in Figures 2 to 4, the packing 33 is the impeller cover 31 and the guide It is composed of a packing holder 32 for preventing the separation between the vanes (22).

However, in order to form the internal leakage preventing means in the suction force generating device of the conventional vacuum cleaner, the external suction pipe 34 is separately provided in order to form the internal suction pipe 31b inside the inlet port 35 of the impeller cover 31. It is not only necessary to manufacture and fix the external suction pipe 34 to the impeller cover 31 by welding or the like, but also requires a part such as a packing 33 and a separate holder 34 for fixing the packing. The number has increased, the material cost has increased, the number of assembling processes has increased, leading to a decrease in productivity and a cost increase.

The present invention provides a suction force generating device for a vacuum cleaner using only an integrated impeller cover and an inlet packing in order to solve the above-described problems, thereby improving suction efficiency, reducing material costs, and improving the process. The purpose is to reduce the processing cost and improve productivity due to the reduction.

1 is a partial cross-sectional view of a conventional suction force generator for a vacuum cleaner,

2 is a partial enlarged cross-sectional view of a conventional impeller cover inlet,

3 is a cross-sectional view of a conventional impeller cover,

4 is an exploded view of a conventional impeller cover,

5 is a partial cross-sectional view of the suction force generator for a vacuum cleaner of the present invention,

6 is an enlarged cross-sectional view of the impeller cover inlet port of the present invention,

7 is a cross-sectional view of the impeller of the present invention,

8 is an exploded view of the impeller cover of the present invention,

9 is a sectional and front view of the inlet packing.

** Description of symbols for the main parts of the drawing **

131. Impeller cover 131a. Impeller cover body

131b. External Suction Tube 132.Inlet Packing

132a. Inlet section 132b of inlet packing. Leak prevention part of inlet packing

In order to achieve the above objects, a motor housing having one end closed and the other end opened; and a motor installed inside the motor housing to generate a rotational force; and installed at an open end of the motor housing by a rotational force of the motor. An impeller assembly generating suction force; and an impeller cover coupled to an open end of the motor housing and having an internal suction pipe at a central portion thereof, and having an external suction pipe installed outside, and installed between the external suction pipe of the impeller cover and the impeller assembly. In the suction force generating device of the vacuum cleaner comprising: an internal leakage preventing means for preventing internal leakage between the front plate and the impeller cover of the impeller assembly, wherein the internal leakage preventing means and the suction port portion is inserted in close contact with the inside of the external suction pipe; Integrally enlarged at the inner end of the suction port portion Are generated and provides the suction force generated in the vacuum apparatus, characterized by comprising packing consists of inlet impeller cover and the front plate is in close contact with the inner annular protruding portion of the leakage preventing

Hereinafter, according to the drawings showing the structure of the suction force generating device of the vacuum cleaner of the present invention, the embodiment is as follows.

Figure 5 is a partial cross-sectional view of the suction force generating device of the vacuum cleaner of the present invention, Figure 6 is a partial enlarged cross-sectional view of the suction port of the impeller cover of the present invention, Figure 7 is a cross-sectional view of the impeller cover of the present invention and Figure 8 is the present invention Is an exploded view of the impeller cover, Figure 9 is a cross-sectional view and plan view of the inlet packing used in the present invention.

As shown in FIG. 5, when a suction force generator for a vacuum cleaner is supplied with power and the rotor 20b of the motor 20 rotates, the impeller coupled to the rotating shaft 25 generates the rotational force generated by the rotor 20b. It is configured to transmit to the assembly 30, the suction force is generated in the intake hole 36 formed in the front of the impeller assembly 30.

Air sucked into the impeller cover through the inlet 135 communicated with the intake hole 36 is discharged 30d formed between the outer periphery of the front plate (30a) and the back plate (30c) of the impeller assembly 30 The discharge port 11 is internally discharged between the motor housing 11 and the motor 20 through the air discharge, and the air discharged therein is formed in the closed end surface of the motor housing 10 through the periphery of the motor 20. It is configured to be discharged through.

In the suction force generating device of the present invention, the other components are denoted by the same reference numerals for the same components as in the prior art, and the overlapping description thereof will be omitted.

In the present invention, in order to obtain the maximum suction efficiency of the suction force generating device, the air sucked through the suction port 135 to flow only between the front plate (30a) and the back plate (30c) of the impeller assembly 30 Internal leakage prevention means are installed.

The internal leakage preventing means of the present invention is an impeller cover 131 formed integrally with the outer suction pipe 131b outside the central portion of the impeller cover body 131a, as shown in Figures 6 to 8, and in Figures 6 to 9 As shown, the inlet packing 132 is formed of a leakage preventing part 132b having an annular protrusion formed at an inner end of the inlet part 132a which is tightly inserted into the outer suction pipe 131b.

The suction port 132a of the suction port packing 132 is closely inserted into the external suction pipe 131b of the impeller cover 131, and then a plurality of caulks 136 are formed along the circumference of the outer circumferential surface of the external suction pipe 131b. A separation preventing flaw 138 corresponding to the separation preventing protrusion 137 formed on the inner surface of the outer suction pipe 131b is formed and fixed on the outer circumferential surface of the suction port 132a of the suction packing.

The leakage preventing part 132b of the inlet packing 132 is positioned between the front plate 30a of the impeller assembly and the impeller cover 131, and the front plate 30a of the impeller assembly 30 rotates. While in contact with the friction to form the groove 133 inside the leakage preventing portion 132b, the air sucked through the inlet 135 is the front plate 30a of the impeller assembly 30 and the impeller cover 131 Improves suction efficiency by preventing air from leaking in between.

The material of the inlet packing 132 is a plastic injection having a high heat resistance that can withstand frictional heat generated by frictional contact between the leakage preventing part 132b of the inlet packing 132 and the front plate 30a of the impeller assembly 30. It is made of material.

As described above, the present invention relates to an apparatus for generating suction force of a vacuum cleaner, and includes an impeller cover incorporating a conventional external suction pipe as an air leakage preventing means between an impeller assembly and an impeller cover for improving suction efficiency, and an inlet packing. It is possible to reduce the material cost according to the reduction of parts, and to improve the productivity by reducing the process.

Claims (3)

A motor housing having one end closed and the other open; A motor installed inside the motor housing to generate a rotational force; An impeller assembly installed at an open end of the motor housing to generate a suction force by the rotational force of the motor; An impeller cover coupled to an open end of the motor housing and having an inner suction pipe at a central portion thereof and an outer suction pipe installed at an outside thereof; In the suction device of the vacuum cleaner comprising: an internal leakage preventing means is installed between the internal suction pipe of the impeller cover and the impeller assembly to prevent the internal air leakage between the impeller assembly and the front plate of the impeller cover, The inner leakage preventing means has an inlet packing having an inlet part tightly inserted into the inner side of the outer suction pipe and an annular protrusion type leakage preventing part which is integrally formed at an inner end of the inlet part and is in close contact with the inside of the front plate. Suction force generator of a vacuum cleaner, characterized in that consisting of. The suction force generating device of claim 1, wherein the external suction pipe is formed integrally with an impeller cover. The suction force of the vacuum cleaner according to claim 1 or 2, wherein a plurality of release preventing protrusions are formed on an inner circumferential surface of the outer suction pipe, and a release preventing groove corresponding to the release preventing protrusion is formed on an outer circumferential surface of the packing. Generator.