KR200172941Y1 - Mounting structure of moving wheel for vacuum cleaner - Google Patents

Abstract

The present invention relates to a transport wheel mounting structure of a vacuum cleaner, the relative rotation relative to the main body by changing the shape of the parts to absorb the play between the fixing member provided on both side wall members of the main body and the fitting member provided to the inside of the transport wheel. The purpose of the transfer wheel is to be able to reduce the flow in the left and right and up and down directions when moving the cloud to add a sense of stability.

The present invention for achieving the above object, and the cylindrical projection 303 'formed to protrude integrally from the side wall member 301 on the outer surface of the side wall member 301 provided on both sides of the main body 300 and Fixing member 302 having integrally a locking portion 304 that is bent outwardly at the distal end of the protruding portion 303 'and an inclined surface 305 formed to be somewhat inclined on the front outer peripheral surface of the locking portion 304. And a cylindrical insertion portion 332 'having a full length protruding inwardly concentrically on the inner surface of the transfer wheel 330 and a locking portion radially bent inwardly around the insertion portion 332'. Since the fitting member 331 integrally provided with a plurality of support parts 333 having 334 is coupled in a mutually forced fitting manner, the protrusion 303 ′ and the fitting member 331 of the side wall member 301 are combined. Insertion portion 332 'of each of the diameter is gradually reduced to the outside along their full length It is characterized in that it is formed to have a shaft diameter portion (A) and an enlarged diameter portion (B) extending from the shaft diameter portion (A) to extend in diameter.

Description

Transport wheel mounting structure of vacuum cleaner

The present invention relates to a transfer wheel mounting structure of a vacuum cleaner, in particular, the transfer wheel is installed so as to rotate relative to both sides of the main body is fixed to absorb the play in the left and right and up and down directions with respect to the main body transfer wheel when moving the main body It relates to a transport wheel mounting structure of a vacuum cleaner that can reduce the flow of water and add stability.

In general, the vacuum cleaner is forcibly suctioning dust and other contaminants together with air from the outside by suction power using the internal pressure and the external pressure difference generated as the motor mounted on the rotating shaft with the impeller is rotated at high speed. In order to be able to clean the contaminated area, the main component of such a vacuum cleaner is shown in FIG.

That is, the vacuum cleaner is connected to the suction device 100 to suck the dust or foreign matter by the suction force of the air according to the driving of the motor, and the dust sucked from this connected to the suction device 100 to the collection place smoothly Communication means 200 to be transported, and is connected to the communication means 200 consists of a main body 300 to house the main components such as the motor while collecting dust transferred therefrom.

Here, the suction device 100 has two transfer wheels 110 mounted to be free to move by exerting a rolling friction with the bottom surface when moving to both sides, and the upper cover to be connected to the communication means 200 It has a structure having a first connecting pipe 120 formed integrally with the rear end of the.

And, the communication means 200 is formed in a hollow shape and the plurality of communication tube members 210 are coupled to each other in a fitting manner, and connected to one end of the communication tube member 210 to turn on the power of the vacuum cleaner (ON) A handle member 220 having an operation unit for switching on / off and a wind speed control unit for arbitrarily manipulating the strength / weakness of the vacuum suction input, and between the handle member 220 and the main body 300. Flexible pipe member 230 made of a corrugated pipe shape of a somewhat flexible material coupled to one end of the handle member 220, and the other end is coupled to one end of the flexible pipe member 230 to be connected flexibly to the main body 300 It has a structure having a connecting pipe member 240 is fitted in the coupling.

In addition, the main body 300 receives the tip of the connecting member 240 of the communication means 200, the suction port 310 is to be connected to this, and the dust indicator to be displayed visually the amount of dust collected therein 320 and two transfer wheels 330 which are installed at both sides to freely move when the main body 300 moves, and are provided for transport so that the user can easily grip the main body 300 when moving to a work place. The handle 340 has a structure including a power line 350 and a power plug 360 to receive operating power from the outside.

On the other hand, inside the main body 300 is provided with a dust collecting chamber is provided with a dust bag for collecting the dust and foreign substances sucked through the suction device 100 and the communication means 200, and the like, At the rear, a drive motor having an impeller mounted on a rotating shaft is installed to generate a vacuum suction input when the vacuum cleaner is operated. In addition, a cord reel device for elastically winding and accommodating other accessory parts, for example, the power line 350, is accommodated therein. And a dust collecting filter that filters out the fine dust and mites contained in the intake air flowing through the dust bag and around the motor.

Therefore, when the vacuum cleaner is used, the operator first installs a dust bag in the dust collecting chamber inside the main body 300, applies power to the main body 300 using the power plug 370, and then turns on the power switch. ON), the driving motor installed in the main body 300 generates a strong vacuum suction input while rotating at a high speed.

Accordingly, since the vacuum suction input generated by the main body 300 is transmitted to the suction device 100 through the communication means 200, dust and foreign matters at the cleaning part are introduced into the suction device 100. In addition, it is sucked and introduced into the main body 300 via the communication means 200, and the dust and foreign substances introduced into the main body 300 are collected in the dust bag installed in the dust collecting chamber 360.

On the other hand, in the conventional vacuum cleaner as described above is provided on both sides of the main body 300, the transfer wheel 330 to freely move when the main body 300 is moved as shown in Figs. On the inner surface of the transfer wheel 330 to the fixing member 302 protruded integrally in an annular shape on the outer surface of the side wall member 301 formed perpendicular to both sides of the main body 300 ( Iii) the fitting member 331 which protrudes integrally is coupled in a forced fitting manner, and the transfer wheel 330 is rotatably mounted to both side wall members 301 of the main body 300.

To this end, the fixing members 302 provided on both side wall members 301 of the main body 300 are cylindrical protrusions 303 formed to protrude integrally from the side wall members 301, and outer portions at the tip ends of the protrusions 303. It is formed so that it may be integrally provided with the latching part 304 of the shape bent in the direction, and the inclined surface 305 formed inclined somewhat in the outer peripheral surface of the front end of this locking part 304.

In addition, the fitting member 331 is also provided to protrude integrally on the inner surface of the transfer wheel 330 is a cylindrical insertion portion 332 and the insertion portion 332 protruding the length of the entire length concentrically on the inner side; It is formed so as to be integrally provided with a plurality of support portions 333 each having a locking portion 334 where the tip portion is bent radially inward.

Accordingly, when the transfer wheel 330 is mounted on the main body 300 of the vacuum cleaner, a cylindrical insert 332 having a long length protruding from the sidewall member 301 is formed in the inside of the transfer wheel 330. Inserted into the cylindrical protrusion 303 formed to be integrally protruded, and then the engaging portion 334 bent inward to the front end of the support 333 of the fitting member 331 is the protrusion 303 of the fixing member 302 It comes into contact with the engaging portion 304 bent outward at the tip, the movement of the fitting member 331 is continued with the elasticity of the member of the support portion 333 as the support portion 333 unfolds to the outside while the engaging portion ( 334 is to ride over the inclined surface 305 formed on the front surface of the locking portion 304 of the fixing member 302.

As a result, the locking portion 334 provided on the fitting member 331 of the transfer wheel 330 is positioned on the rear surface of the locking portion 304 provided on the fixing member 302 of the side wall member 301, and thus the main body 300 is disposed. The transfer wheel 330 is coupled to be idle on the side wall member 301 of the.

However, when the fitting member 331 of the transfer wheel 330 is coupled to the fixing member 302 provided on the main body 300 of the vacuum cleaner in a forced fitting manner, the protrusion 303 of the fixing member 302 as described above. ) And a clearance (“X”) due to a machining error is provided between the insertion portion 332 of the fitting member 331 inserted into the protrusion 303. Since there is a play (“Y”) due to a machining error between the locking portion 304 formed at the tip of the protrusion 303 and the locking portion 334 formed at the tip of the supporting portion 333 of the fitting member 331, The transfer wheel 330 is mounted on the side wall member 301 provided on the main body 300 of the vacuum cleaner, and the protrusion 303 of the fixing member 302 is moved when the transfer wheel 330 moves in the cloud. And the clearance ("X") according to the machining error between the insertion portion 332 of the fitting member 331, and the engaging portion 304 of the fixing member 302 and Group engaging part 334 the feed wheel 330 due to the clearance ( "Y") according to the machining error between the fitting member 331 has had a disadvantage that wobble to the right and left and up and down directions.

The present invention has been devised to solve the above problems, by changing the shape of the parts to absorb the play between the fixing member provided on both side wall members of the main body and the fitting member provided to the inside of the transfer wheel, It is an object of the present invention to provide a transport wheel mounting structure of a vacuum cleaner, in which a transport wheel installed in a relatively rotatable manner can reduce flow in left and right and up and down directions when rolling, thereby adding stability.

1 is a perspective view showing a vacuum cleaner of a general type,

Figure 2 is an exploded perspective view showing a state in which the transfer wheel is mounted on the body of the conventional vacuum cleaner,

Figure 3 is a longitudinal sectional view showing a portion where the transfer wheel is mounted on the main body of the vacuum cleaner of Figure 2,

Figure 4 shows a state in which the transfer wheel is mounted on the body of the vacuum cleaner according to the present invention

Perspective,

5 is a view showing a portion where the transfer wheel is mounted on the main body of the vacuum cleaner of FIG.

Longitudinal section.

<Explanation of symbols for the main parts of the drawings>

100-Suction device 200-Communication means

300-main body 301-side wall member

302-retaining member 303-protrusion

304-Clamp 305-Slope

330-Transport Wheel 331-Fitting

332-Insertion 333- Support

334-catch

The present invention for achieving the above object is a cylindrical projection formed to protrude integrally from the side wall member on the outer surface of the side wall member provided on both sides of the main body and the engaging portion of the form bent outward in the front end of the projection portion And a fixing member having integrally inclined surfaces formed to be slightly inclined on the front end outer circumferential surface of the engaging portion, a cylindrical insert portion having a full length protruding concentrically on the inner surface of the transfer wheel, and a radially distal end portion around the insert portion. In the fitting member having a plurality of supporting parts integrally with the engaging portion bent inwardly is coupled in a mutually forced fitting manner, the protrusions of the side wall member and the insertion portion of the fitting member are each diameter outward along their entire length Molded to have gradually reduced shaft diameter section and expanding diameter section extending diameter from this shaft diameter section It is characterized by.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an exploded perspective view showing a state in which the transfer wheel is mounted on the main body of the vacuum cleaner according to the present invention, Figure 5 is a longitudinal cross-sectional view showing a portion where the transfer wheel is mounted on the main body of the vacuum cleaner of Figure 4, Detailed descriptions of the general matters of the vacuum cleaner with the same reference numerals are given in the same reference portions respectively shown in FIGS. 4 and 5 for explanation of the present invention and the conventional reference portions of the vacuum cleaners shown in FIGS. The description will be omitted.

The present invention, as shown in the drawing, in the vacuum cleaner on the side wall member 301 provided on both sides of the main body 300, the transfer wheel 330 is mounted in a forced fitting manner, respectively, the transfer wheel 330 is When the main body 300 is moved, the flow between the main body 300 and the transfer wheel 330 generated when the cloud is moved freely with respect to the main body 300 is reduced.

That is, the fixing member 302 protruded integrally in an annular shape on the outer surface of the side wall member 301 formed perpendicular to both sides of the main body 300 is a protrusion formed integrally protruding from the side wall member 301. 303 ', the catching part 304 of the form bent outward at the front-end | tip part of this protrusion part 303', and the inclined surface 305 formed inclined to the front-side front outer peripheral surface of this catching part 304 at some inclination. It is formed to have.

Here, the cylindrical protrusion 303 'formed to protrude integrally from the side wall member 301 is formed in a mortar shape in which the diameter gradually decreases along the entire length and then expands again, and the protrusion 303' extends the full length thereof. Therefore, it is formed to have an axial diameter portion A, the diameter of which is gradually reduced to the outside, and an enlarged diameter portion B, the diameter of which extends from the axial diameter portion A.

On the other hand, the fitting member 331 is provided integrally protruding on the inner surface of the transfer wheel 330 has an insertion portion 332 'protruding from the inner side of the conveying wheel extending a little longer concentrically, and the insertion portion 332' It is formed so as to integrally comprise a plurality of support portions 333 each having a locking portion 334 whose tip is bent radially inwardly around the circumference.

Here, the cylindrical insertion portion 332 'protruding from the inner side of the transfer wheel 330 to extend a little longer is formed in the shape of a mortar, which is gradually reduced in diameter along the entire length and then expanded again in diameter. 332 'is formed to have a shaft diameter portion C which gradually decreases in diameter outward along its full length, and an enlarged diameter portion D which extends in diameter from the shaft diameter portion C. 332 'corresponds to the shape of the protrusion 303' provided in the side wall member 301, and its external size is formed to be insertable into the protrusion 303 '.

Therefore, as described above, the fixed member 302 which is integrally provided as the outer side on the side wall member 301 of the main body 300 gradually decreases in diameter outward along the entire length, and then the shaft diameter portion A of which the diameter expands again. At the tip of the tip portion 303 'of the bulging cylindrical shape provided with the enlarged diameter portion B, the locking portion 304 bent outwardly and the front end of the locking portion 304. With the inclined surface 305 formed; The fitting member 331 integrally provided on the inner side of the transfer wheel 330 has a shaft diameter portion (C) and the enlarged diameter portion (D) of the diameter is gradually reduced in diameter to the outside along the entire length and then expanded again. The insertion part 332 'of a mortar shape, and the support part 333 which has the latching part 334 in the radial direction around the insertion part 332' are provided, and the side wall of the main body 300 is provided. When the fitting member 331 of the transfer wheel 330 is coupled to the fixing member 302 provided on the member 301 by a forced fitting method, the machining error between the protrusion 303 'and the insertion portion 332' is prevented. Even though there are some gaps, the gaps between the protrusions 303 'and the inserting portion 332' may be effectively absorbed due to the shape of the protrusions 303 'and the insertion portion 332'.

That is, according to the processing error between the protrusion 303 ′ of the fixing member 302 and the insertion portion 332 ′ of the fitting member 331, the transfer wheel 330 moves the rolling body when the main body 300 moves. When flowing in the left and right and the front and rear directions with respect to the main body 300, the protrusion 303 'of the fixing member 302 and the insertion portion 332' of the fitting member 331 are respectively outward diameter along the entire length Since the shaft diameter portion (A, C) and enlarged diameter portion (B, D) of the form that is gradually reduced and expanded again, the flow is effectively reduced.

As such, when the transfer wheel 330, which is mounted to both sides of the main body 300 of the vacuum cleaner, is rotated in a state in which the flow in the left and right directions is suppressed during rolling, the worker moves while the vacuum cleaner is in use. When making or moving while dragging on the floor after completion of use can be easily clouded without play with the main body 300 can improve the productability.

As described above, according to the transfer wheel mounting structure of the vacuum cleaner according to the present invention, the fitting member 331 provided as an inner surface of the transfer wheel 330 on the fixing member 302 provided on both sides of the main body 300 of the vacuum cleaner. ) Is combined in a forced fit freely in the cloud movement, the flow of the transfer wheel 330 relative to the main body 300 can be suppressed in the left and right and front and rear directions, thereby improving the productability, as well as assembly of the product Some machining errors between parts can be structurally absorbed up to a certain limit, which facilitates process management.

Claims (1)

Cylindrical protrusions formed to protrude integrally from the side wall members on the outer surfaces of the side wall members provided on both sides of the main body, and a locking portion bent outwardly at the tip portion of the protrusions and slightly inclined to the outer peripheral surface of the front end of the locking portion. A plurality of supports having a fixed member having an inclined surface integrally, a cylindrical insert portion having a full length extending concentrically on the inner surface of the transfer wheel, and a catch portion radially bent inwardly around the insert portion; In the mounting of the transport wheel of the vacuum cleaner is formed by the fitting members having integrally coupled to each other by a forced fit method, The protruding portion of the side wall member and the inserting portion of the fitting member are each formed to have an axial diameter portion that gradually decreases in diameter along the entire length thereof and an enlarged diameter portion that extends in diameter from the shaft diameter portion. Inserting portion is a transfer wheel mounting structure of a vacuum cleaner, characterized in that formed so as to be inserted into the protrusion of the side wall member.