Handle assembly rotatable in all directions and cleaner having the same

0001This application claims priority under 35 U.S.C. § 119 from Korean Patent Application No. <patcit id="pcit0001" dnum="KR1020070134708"><text>10-2007-0134708, filed on December 20, 2007</text></patcit>, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

1. Field of the Invention

0002The present disclosure relates to a vacuum cleaner, and more particularly, to a handle assembly rotatable in all directions and a vacuum cleaner having the same.

2. Description of the Related Art

0003A general cleaner includes a cleaner body, a brush assembly, a brush pipe, a flexible suction hose, and a handle assembly. The cleaner body generates a suction force for sucking dust-laden air by driving a motor mounted therein. The brush assembly travels along a surface being cleaned, and draws in dust-laden air from the surface. The drawn dust-laden air is transferred to a dust separating apparatus mounted in the cleaner body through the brush pipe extending from the brush assembly. The brush pipe is connected to the cleaner body using the flexible hose, which enables a user to conveniently clean an area. The handle assembly is mounted between the brush pipe and the suction hose, and includes a handle which a user may grip to manipulate the brush assembly. The user may clean a surface by gripping the handle and moving the brush assembly.

0004The cleaner handle is generally fixed in place, and thus does not rotate. That is, the cleaner handle is fixed to a brush pipe, so the cleaner handle moves along with the brush pipe. When a user cleans corners, the user may experience inconvenience in handling the long brush pipe, since the user needs to bend his or her wrist or elbow.

0005To solve the above problems, vacuum cleaners having a handle rotatable in a certain direction was disclosed. However, such vacuum cleaners also have the above problems, since the handle rotates in only one direction.

0006An aspect of the present disclosure is to address at least the above problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide a handle assembly rotatable in all directions.

0007Another aspect of the present disclosure is to provide a vacuum cleaner having the handle assembly.

0008According to an exemplary aspect of the present invention, there is provided a handle assembly, including a housing; a handle which is capable of being gripped by a user; a connection unit which connects the housing with the handle to rotate in all directions; and an elastic unit which elastically biases the handle to a neutral position.

0009The connection unit may include a shaft which penetrates the handle; and a guide unit which houses the shaft in a rotatable manner.

0010The connection unit may further include a flange which is inserted into the guide unit, and is formed at both ends of the shaft.

0011The elastic unit may include four elastic members which are in contact with the handle.

0012The elastic member may be a leaf spring.

0013The elastic member may be a torsion spring.

0014The elastic member may be a compression spring.

0015According to an exemplary aspect of the present invention, there is provided a cleaner, including a brush assembly which contacts a surface being cleaned, and draws in dust-laden air from the surface; a brush pipe which extends from the brush assembly; and a handle assembly which is mounted on an end of the brush pipe, wherein the handle assembly includes a housing; a handle which is capable of being gripping by a use; a connection unit which connects the housing to the handle to rotate in all directions; and an elastic unit which elastically biases the handle to a neutral position.

0016The above and/or other aspects of the present invention will be more apparent by describing certain exemplary embodiments of the present invention with reference to the accompanying drawings, in which: <ul id="ul0001" list-style="none" compact="compact"><li><figref idref="f0001">FIG. 1</figref> is a perspective view of a vacuum cleaner according to an exemplary embodiment of the present invention;</li><li><figref idref="f0002">FIG. 2</figref> is an exploded perspective view of a handle assembly according to an exemplary embodiment of the present invention;</li><li><figref idref="f0003">FIG. 3</figref> is a cross-sectional side view of the handle assembly of <figref idref="f0002">FIG. 2</figref>;</li><li><figref idref="f0003">FIG. 4</figref> is a cross-sectional plane view of the handle assembly of <figref idref="f0002">FIG. 2</figref>;</li><li><figref idref="f0004">FIG. 5</figref> is an exploded perspective view of a handle assembly according to an exemplary embodiment of the present invention;</li><li><figref idref="f0005">FIG. 6</figref> is a plane view illustrating the state of the vacuum cleaner of <figref idref="f0001">FIG. 1</figref> while in use; and</li><li><figref idref="f0005">FIG. 7</figref> is a side view illustrating the state of the vacuum cleaner of <figref idref="f0001">FIG. 1</figref> while in use.</li></ul>

0017Certain exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings.

0018In the following description, same drawing reference numerals are used for the same elements even in different drawings. The matters defined in the description, such as detailed construction and elements, are provided to assist in a comprehensive understanding of the invention. Thus, it is apparent that the present invention can be carried out without those specifically defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail.

0019<figref idref="f0001">FIG. 1</figref> is a perspective view of a vacuum cleaner according to an exemplary embodiment of the present invention.

0020A vacuum cleaner according to an exemplary embodiment of the present invention includes a brush assembly 110, a brush pipe 120, a flexible hose 130, a cleaner body 140, and a handle assembly 150.

0021The brush assembly 110 contacts a surface to be cleaned, and draws in dust-laden air from the surface. The drawn dust-laden air is transferred to the cleaner body 140 through the brush pipe 120 extending from the brush assembly 110, and through the flexible hose 130. A dust separating unit (not shown) mounted in the cleaner body 140 separates dust or other matter from air drawn in through the brush assembly 110. A motor (not shown) is mounted in the cleaner body 140 to generate a suction force to draw dust-laden air into the vacuum cleaner body 140 through the brush assembly 110.

0022The handle assembly 150 is disposed between the brush pipe 120 and the flexible hose 130. A user grips a handle 170 provided on the handle assembly 150, and manipulates the brush pipe 120 and the brush assembly 110 in order to clean the surface being cleaned.

0023<figref idref="f0002">FIG. 2</figref> is an exploded perspective view of the handle assembly 150, <figref idref="f0003">FIG. 3</figref> is a cross-sectional side view of the handle assembly 150, and <figref idref="f0003">FIG. 4</figref> is a cross-sectional plane view of the handle assembly 150.

0024The handle assembly 150 includes a housing 160, the handle 170, a connection unit 180, and an elastic unit 190.

0025The housing 160 forms an outward of the handle assembly 150.

0026The handle 170 is rotatable in all directions, including left, right, up, and down, and may be gripped by a user in order to move the vacuum cleaner.

0027The connection unit 180 connects the housing 160 with the handle 170 capable of rotating in all directions. The connection unit 180 includes a shaft 181 and a guide unit 183.

0028The shaft 181 is formed to penetrate the handle 170, and the handle 170 is able to rotate up or down about the shaft 181.

0029The guide unit 183 houses the shaft 181, in which the shaft 181 is capable of rotating, and the guide unit 183 is housed in the housing 160. The shaft 181 slidingly rotates in the guide unit 183, and the handle 170 is able thereby to rotate in left and right.

0030The shaft 181 and guide unit 183 support the handle 170 to rotate in all directions, including left, right, up, and down. The connection unit 180 disclosed above is provided as example in the exemplary embodiment of the present invention, but the connection unit 180 may have various forms, and only needs to connect the handle 170 so that the handle 170 is capable of rotating in all directions, including left, right, up, and down.

0031As the handle 170 rotates in all directions, including left, right, up, and down, a user may grasp the handle 170 in various positions without moving the brush pipe 120. Therefore, the angle at which a user's wrist or elbow is bent while performing cleaning is reduced. Accordingly, the user feels less strain and may use the brush pipe 120 more conveniently.

0032The elastic unit 190 elastically biases the handle 170 to a neutral position. In the neutral position, the handle 170 does not rotate at all in any direction, and is located at the center of the housing 160. That is, if the handle 170 is in the neutral position, the elastic unit 190 applies a net force of 0N to the handle 170. The elastic unit 190 according to the exemplary embodiment of the present invention includes four elastic members 191, 192, 193, and 194 which are in contact with the handle 170.

0033If the handle 170 rotates upwards, the elastic member 191 elastically biases the handle 170 to the neutral position, if the handle 170 rotates downwards, the elastic member 192 elastically biases the handle 170 to the neutral position, if the handle 170 rotates to the left, the elastic member 193 elastically biases the handle 170 to the neutral position, and if the handle 170 rotates to the right, the elastic member 194 elastically biases the handle 170 to the neutral position.

0034In the exemplary embodiment of the present invention, the elastic members 191, 192, 193, and 194 are formed as leaf springs. However, the present invention should not be considered to be limited to such a configurations, and the elastic members 191, 192, 193, and 194 may alternatively be torsion springs, or compression springs.

0035<figref idref="f0004">FIG. 5</figref> is an exploded perspective view of a handle assembly according to an exemplary embodiment of the present invention. The handle assembly 150 of <figref idref="f0004">FIG. 5</figref> is substantially identical to that of <figref idref="f0002">FIG. 2</figref>, except that the handle assembly 150 of <figref idref="f0004">FIG. 5</figref> additionally includes a flange 182 formed at both ends of the shaft 181. The flange 182 corresponds to the guide unit 183 in cross-section, and thus the flange 182 may be inserted into the guide unit 183, and is capable of sliding therein. As the flange 182 is capable of sliding in the guide unit 183, the shaft 181 is able to rotate, and the handle 170 is able to move to the left and right.

0036<figref idref="f0005">FIG. 6</figref> is a plane view illustrating the state of the vacuum cleaner while in use according to an exemplary embodiment of the present invention.

0037Referring to <figref idref="f0005">FIG. 6</figref>, the handle 170 rotates to the left and right, so a user can conveniently clean corners (A). If the handle 170 is fixedly connected to the brush pipe 120, a user should move his or her arm to the position shown in the dotted line to clean the corner (A). However, as the handle 170 of the vacuum cleaner according to the exemplary embodiment of the present invention is rotatable to the left and right, it is unnecessary for a user to move to the corner (A). The user can conveniently handle the brush pipe 120 by using the vacuum cleaner according to the exemplary embodiment of the present invention.

0038<figref idref="f0005">FIG. 7</figref> is a side view illustrating the vacuum cleaner of <figref idref="f0001">FIG. 1</figref> while in use.

0039Referring to <figref idref="f0005">FIG. 7</figref>, a user should move the brush pipe 120 vigorously in order to clean a corner (B). If the handle 170 is fixedly connected to the brush pipe 120, the user should bend his or her wrist or elbow to an inconvenient position. However, the handle 170 of the vacuum cleaner according to the exemplary embodiment of the present invention is rotatable up and down. Accordingly, even when the brush pipe 120 is bent at an extreme angle, the angle between the handle 170 and the surface hardly varies. That is, the angle θ₁ between the handle 170 and the surface when the brush assembly is positioned as shown by the solid line is approximately the same as the angle θ₂ between the handle 170 and the surface when the brush assembly is positioned as shown by the dotted line. Accordingly, a user can conveniently clean the corner (B) without substantial wrist and elbow movement.

0040According to the handle assembly of the exemplary embodiment of the present invention, the handle rotates in all directions, including left, right, up, and down. Therefore, the user's wrist and elbow are bent at a slight angle, and the user feels less strain in his or her joints.

0041A user can thus handle the brush pipe conveniently by rotating the handle.

0042The foregoing exemplary embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of apparatuses. Also, the description of the exemplary embodiments of the present invention is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.