JPH04210025A - Electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent the rolling sounds of rollers from proparating to the body and causing resonance and to absorb impulse sounds acting on the rollers and the rotary members by setting a vibration-proof material made of non-wooven cloth between the front end of a guide cylinder equipped at the rotary member of the front of the bottom of the vacuum cleaner body and the bottom face of the cleaner body. CONSTITUTION:Rollers 24 turning in front and behind direction of the body 21 are equipped at both sides of the rear part of the body 21 and a round shaft 29 protruded downward is fitted at the bottom face of the body 21 at the front thereof. In the round shaft 29, a rotary member 30 having the roller 34 supported at the rotary shaft and also having a rotatable clearance at a guide cylinder 31 of the rotary member 30 is fitted by a fitting claw 32. A vibration-proof member 35 made of non-wooven cloth is kept between the front end of the bottom side of the body 21 of the guide cylinder 31 and the bottom face of the body 21 so as to surround the outer periphery of the root of the round shaft 29. On moving the body 21, when pulling a hose, the rotary member 30 is turned to the opposite position by 180 deg. against the pulled direction of the roller 34 and the front of the body 21 is turned to the direction to which one draws.

Description

[Detailed description of the invention]

[00011

[Industrial Field of Application] The present invention relates to a vacuum cleaner for household use, industrial use, etc., which is designed to be quiet. [0002] The structure of a conventional vacuum cleaner of this type will be explained with reference to FIGS. 5 and 6. [00031 As shown in FIG. It has a motor chamber 15 that houses a cord reel 3 and the like, and a dust collection chamber 8 that is fitted with a paper bag 6 to collect dust. ) has a lid body 5 equipped with an intake lower to which can be connected. [0004] Further, rollers 4 that rotate in the front-rear direction of the main body 1 are provided on both rear side surfaces of the main body 1, and a circular shaft 9 that projects downward is provided on the bottom surface of the main body 1 in front of the rollers 4.
A rotating body 10 having a roller 14 that is engaged with an engaging claw 12 and supported by a rotating shaft 13 is provided so as to be rotatable 360 degrees. [0005] When the user pulls the hose, the main body 1
When moving the main body 1, the rollers 14 of the rotating body 10 face 180 degrees in the opposite direction to the pulling direction, and the front part of the main body 1 faces the direction in which the user pulls, making it easy to change direction. [0006]

However, in the above-mentioned conventional configuration, the guide tube 11 of the rotating body 10 is directly connected and engaged with the circular shaft 9 of the main body 1 and the bottom surface of the main body 1.
The rotation sound of the roller 14 was transmitted to the bottom surface of the main body 1, causing resonance, which was unpleasant to the ears, and the impact when passing over an obstacle such as a threshold was immediately applied to the main body 1, causing fatigue failure. [o o O7] Therefore, the present invention is intended to solve such problems, and a first object thereof is to provide a vacuum cleaner with good noise reduction, vibration proofing, and impact proofing properties. [0008] A second object of the present invention is to provide a vacuum cleaner that is quieter, vibration-proof, shock-proof, and has better cushioning properties. [0009]

[Means for Solving the Problems] In order to achieve the above first object, the vacuum cleaner of the present invention has a structure in which the tip of the guide tube provided on the rotating body at the front bottom of the vacuum cleaner body and the It is constructed by sandwiching a vibration isolator made of a nonwoven material between the bottom surfaces. [00101 In addition, in order to achieve the second objective, a groove is provided near the tip of the guide cylinder at the base of the circular shaft at the bottom of the main body of the vacuum cleaner, and a rubber body and a guide are provided on the groove side so as to cover the upper part of the groove. A plurality of layers of vibration isolators made of nonwoven fabric bodies are provided on the cylinder side, and this vibration isolator is rotatably held between the upper part of the groove and the tip of the guide cylinder. [00111

[Function] With the above-described configuration, the present invention can absorb vibrations and shocks received by the front roller and the rotating body by the vibration isolating material, and prevent them from being transmitted to the main body of the vacuum cleaner. [0012] Further, by providing a rubber material in the upper part of the groove and further providing a nonwoven fabric material thereon, air is sealed in the groove by the rubber body, and an air traction effect can be further obtained. [0013] [0013] Hereinafter, one embodiment of the present invention will be described based on the drawings. [00141 In FIGS. 1 and 2, the vacuum cleaner main body (hereinafter referred to as main body) 21 has a motor 22. code reel 23
It has a motor chamber 39 which has a built-in motor chamber 39, and a dust collection chamber 28 in which a paper bag 26 is attached to collect dust. It has a lid body 25 with a connecting air intake port 27. [0015] Further, the main body 21 is provided on both rear sides of the main body 21.
A roller 24 that rotates in the front-rear direction is provided,
A circular shaft 29 is provided on the bottom surface of the main body 21 in front of the roller 24 and projects downward. [0016] A rotary body 30 having a roller 34 pivotally supported by a rotary shaft 33 is engaged with the circular shaft 29 by an engaging pawl 32 with a gap that allows rotation with the guide tube 31 of the rotary body 30. It is installed. [00171 A vibration isolator 35 made of a non-woven material is sandwiched between the bottom end of the main body 21 of the guide tube 31 and the bottom surface of the main body 21 so as to surround the outer periphery of the base of the circular shaft 29 shown in FIG. [00181 When the user moves the main body 21 during use, when the user pulls the hose, the rotating body 30 rotates so that it is in a position 180 degrees opposite to the direction in which the roller 34 is pulled, and the front part of the main body 21 is used. This is to change the direction of the bow in the direction <1>. [00191 As shown in FIG. 4, the circular shaft 29 of the main body 21
A groove 38 surrounding the circular shaft 29 is provided at the base of the guide tube 31 at a position of the tip 40 of the guide tube 31, and the groove 38 is formed so as to cover the groove 38.
Rubber body 36 on the side. A vibration isolator 35 made of two layers of nonwoven fabric material 37 is sandwiched between the guide tube 31 and the guide tube 31 so as to be in close contact with the inner edge 41 and outer edge 42 of the groove 38. [00201 In the above configuration, as described above, the vibration isolator 3
5, it is possible to prevent resonance transmission of the rotation sound of the roller 34 to the main body 21. Therefore, the impact caused by passing over a sill or the like is absorbed, and fatigue failure in the vicinity of the circular shaft 29 of the main body 21 can be prevented. [0021] Also, the rubber body 3 of the vibration isolator 35 consisting of two layers
6, air is sealed in the groove 38, and the vibration isolator 35 exhibits vibration isolation properties and a soft feeling utilizing the cushioning properties of the air. [0022]

Effects of the Invention As described above, in the vacuum cleaner of the present invention, there is a gap between the guide cylinder of the rotating body having the roller rotatably attached to the circular shaft at the bottom of the vacuum cleaner body and the bottom of the main body. By sandwiching a vibration isolator made of non-woven material,
A device that prevents the rolling sound of the rollers on the rotating body from being transmitted to the main body and resonates, eliminating the harshness in the ears, and absorbing the impact applied to the rollers and the rotating body to prevent fatigue failure of the main body, rotating body, and rollers. It is. [0023] In addition, by sealing air into the grooves provided in the main body with a vibration isolator made of multiple layers of rubber and non-woven fabric, the cushioning effect of the vibration isolator and the enclosed air further reduces noise and absorbs shock. , which exhibits a soft feel.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional side view of a vacuum cleaner showing an embodiment of the present invention.

[Figure 2] External view of the rear

[Figure 3] Enlarged cross-sectional view of section A in Figure 1

[Fig. 4] Enlarged sectional view of another embodiment of part A in Fig. 1

[Figure 5]
Partially cutaway side view of a conventional vacuum cleaner

[Figure 6] Rear external view

[Explanation of symbols]

21 Vacuum cleaner body 24 Roller 28 Dust collection room 29 Circular shaft 30 Rotating body 31 Guide tube 32 Engagement claw 34 Roller (front roller) 35 Vibration isolator 36 Rubber body 37 Nonwoven fabric body 38 grooves 39 Motor room 40 Tip

[Figure 4]

Claims (2)

[Claims] Claim 1: A vacuum cleaner body comprising a motor chamber, a dust collection chamber in front of the motor chamber, rollers running in the front and back direction of the vacuum cleaner body at the lower part of both rear sides of the vacuum cleaner body; one or more circular shafts having engaging claws at their tips, which stand vertically downward on the bottom surface of the vacuum cleaner body in front of the roller; and engaging with the engaging claws and freely movable about the circular shafts. a rotating body holding a front running roller that rotates, the rotating body having a guide tube that covers the outer periphery of the circular shaft, and a space between the tip of the guide tube and the bottom surface of the vacuum cleaner body. A vacuum cleaner equipped with a vibration isolator made of non-woven material. Claim 2: A plurality of grooves that surround the outer periphery of the base of the circular shaft at the base of the circular shaft, and a rubber body on the groove side and a nonwoven fabric body on the guide cylinder side so as to cover the groove. The electric cleaner according to claim 1, further comprising a layered vibration isolator, the tip of the guide tube being located in the groove, and the vibration isolator being rotatably held between the groove and the tip of the guide tube. Machine.