Vacuum cleaner

Abstract

To solve a problem that attached dust is hard to be scraped efficiently in a range that a dust remover cannot reach.SOLUTION: A vacuum cleaner includes: a body case that has a main electric blower; a dust collection tank that collects dust; and a filter device that can be freely attached to and detached from the dust collection tank. The filter device includes a filter, a dust remover that contacts the filter, and a dust removal lever that drives the dust remover. The dust collection tank includes a cleaning body that contacts the filter. By such a vacuum cleaner, dust attached to the filter can be easily removed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a dust removal structure of a vacuum cleaner.

Background Art

[0002] As a conventional example, as shown in Patent Document 1 for example, a filter device that rubs the filter surface with a dust remover includes a filter, a synthetic resin support frame provided on the discharge side surface of the filter, a dust remover that is located between the filter and the support frame and abuts so that the filter is in a stretched state, and a dust remover lever located at the central portion of the filter.

[0003] In addition, as shown in Patent Document 2, a filter frame is attached between the filter and the electric blower so that the filter does not deform due to the wind pressure during suction. Further, the airtight packing includes the filter frame and the filter and is arranged to maintain airtightness between the main body unit and the dust collection tank, and has a structure in which cotton dust, sand dust, etc. attached to the filter are dropped by manually shaking them up, down, left, and right.

[0004] Patent Document 3 has a configuration in which a brush is in sliding contact with a filter as the bottom cover in the dust collection case is fully opened, and moves downward while dropping dust.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the technology of Patent Document 1, by repeatedly rotating the dust removal lever on the discharge side for collecting dust, the rotation range of the dust removal element has the function of removing dust. However, it has been difficult to efficiently wipe off the attached dust in the range where the dust removal element cannot reach. Also, when the overall height of the main body is made as low as possible to lower the center of gravity or when a large electric blower is incorporated for the purpose of improving performance, it is necessary to position the electric blower incorporated in the motor case on the dust collection chamber side. Therefore, it becomes necessary to arrange the dust removal lever below the motor case. When a rotating dust removal lever is provided, a large dust removal element design that covers the entire filter area is required, and there has been a problem that the operating force for rotating the dust removal lever becomes heavy due to the influence of the moment, resulting in poor operability.

[0007] Also, in the technology of Patent Document 2, the dust adhering to the filter has a structure in which the dust is dropped while shaking it up and down and left and right by hand. However, since there is no function of wiping the attached dust, it is difficult to shake off the dust adhering to the entire circumference of the filter, and there have been problems such as removing the dust that remains attached by removing it from the main body or cleaning it by washing with water. Furthermore, in the structure of Patent Document 3, since it is a structure in which a brush is in sliding contact with a part of the filter range to prevent clogging of the suction force, it has been a difficult structure to remove the dust adhering to the periphery of the dust collection case. Also, due to the link function, there has been a problem that replacement work, such as when it breaks, is not easy.

Means for Solving the Problems

[0008] The vacuum cleaner of the present invention is a vacuum cleaner including a main body case having an electric blower, a dust collection tank for collecting dust, and a filter device detachably attached to the dust collection tank, wherein the filter device includes a filter, a dust removal element that abuts on the filter, and a dust removal lever that drives the dust removal element, and the dust collection tank has a cleaning body that abuts on the filter.

Effects of the Invention

[0009] According to this embodiment, by bringing the cleaning body of the cleaning device into contact with the dust-adhering outer surface of the filter, it becomes possible to remove the dust adhering to the dust-adhering outer surface of the filter that cannot be completely removed only by the dust removal unit, and the dust can be dropped into the dust collection tank without being scattered outside the cleaner main body when the filter device is detached or attached, enabling hygienic handling. In addition, by making the cleaning device detachable from the dust collection tank, it becomes possible to wash it with water even when dirt and dust accumulate, and the removal effect can always be maintained. Even if damage occurs, partial component replacement is possible, improving serviceability. Furthermore, even if it is composed of metal or plastic, being removable facilitates separate disposal and is also effective as a means of separating recyclable resources.

[0010] Furthermore, when a cleaning body with a charge removal function is used for the cleaning device, even when static electricity is charged due to friction or the like in the dust collection tank, it becomes possible to suppress or remove the static electricity charge, allowing users to use it with confidence without giving them discomfort.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

Examples

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall cross-sectional view of a vacuum cleaner according to an embodiment of the present invention. The vacuum cleaner main body includes a main body case 102 incorporating an electric blower 101, a caster base 104 to which traveling casters 103 are attached, a dust collection tank 105 fixed to the caster base 104, and a filter device 106 for collecting the sucked dust.

[0013] The main body case 102 consists of a motor base 107 for housing the electric blower 101 and an upper case 108. A handle 109 and a power cord (not shown) are attached to the outer peripheral surfaces of these respective parts as shown in the figure.

[0014] On the side surface of the dust collection tank 105, a suction port 110 into which a hose is detachably inserted and a clamp 112 (see FIG. 7) are attached to the outer side surface. The clamp 112 is a member that pulls and fixes the filter device 106 toward the dust collection tank 105 inside the dust collection tank 105, and is composed of a contact plate and a screw (not shown), and is attached to the opposing side surfaces of the upper peripheral edge portion of the dust collection tank 105. A plurality of component storage holes (not shown) are provided on the upper outer periphery of the caster base 104, and accessories can be detachably supported by insertion and fitting.

[0015] The filter device 106 will be described with reference to FIGS. 2, 3, and 4. As shown in FIG. 2, the filter device 106 includes a filter 203 with an airtight packing 202 attached to its edge, a filter frame 204 serving as a support frame for maintaining the shape of the airtight packing 202, a support frame 205 for suppressing the deformation of the cloth filter due to the pressure generated by suction, a dust remover 206 that abuts against the filter 203, and a dust removal lever 207 (see FIG. 2).

[0016] As shown in Fig. 3, the dust remover 206 is configured to be disposed separately between the support frame 205 and the filter 203. As shown in Fig. 4, the dust removal lever 207 is fixed to the dust remover 206 via the support frame 205. By rotating the dust removal lever 207, the dust remover 206 that abuts against the filter 203 (see Fig. 2) is rubbed against the surface of the filter 203, or has a structure that imparts vibration while rotating. Thus, the dust adhering to the dust collection tank 105 side of the filter 203 can be removed.

[0017] Furthermore, as shown in Figs. 5 and 6 of the upper end portion drawing on the inner peripheral side of the dust collection tank 105 shown in Fig. 3, a cleaning device 301 having a cleaning body 302 disposed on the inner peripheral surface of the dust collection tank 105 on the opening side of the dust collection tank 105 rather than at the upper end position on the main body case 102 side of the dust remover 206 is detachably fixed, and the cleaning body 302 (see Figs. 5 and 6) is always in contact with the dust-adhering side surface of the filter 203 (see Fig. 3).

[0018] In this embodiment, the filter 203 shown in Fig. 2 is a cloth filter, but it is not limited to cloth and may be other filter media, such as non-woven fabric or rigid filter paper. As shown in Fig. 2, the shape of the filter 203 of the embodiment has substantially the same diameter as the substantially circular airtight packing 202 and is in the range of a substantially cylindrical shape, and has the shape of the support frame 205 that keeps it substantially parallel to the inner surface of the dust collection tank 105 (see Fig. 3). When the filter 203 is attached, the dust remover 206 has a shape that abuts against the filter 203 by rotation or vibration, and is provided with a dust removal lever 207 (see Fig. 4) that facilitates operability. The shape of the dust removal lever 207 can be any shape as long as it can be rotated to enable dust removal operation.

[0019] A cleaning device 301 is disposed on the inner peripheral surface of the dust collection tank 105 shown in Fig. 3, on the opening side of the dust collection part rather than at the opening end position on the dust collection tank 105 side of the dust remover 206. In this embodiment, the description is made about the circular type of the appearance shape of the vacuum cleaner, but the shape of the vacuum cleaner main body can be applied to any shape of vacuum cleaner. According to this embodiment, since the dust removing member 206 has a shape that abuts against the filter 203, the dust adhering to the abutting position is removed by vibrating the dust removing member 206 while rotating it with a dust removing lever 207 (see FIG. 4).

[0020] Furthermore, for the dust that cannot be completely removed by the dust removing member 206, when the operation of removing the filter 203 shown in FIG. 7 is performed, since the filter 203 is removed while being in contact with the cleaning body 302 of the cleaning device 301, the dust adhering to the filter 203 can be removed. Thus, together with the dust removing member 206 (see FIG. 4), as shown in FIG. 3, by positioning the cleaning device 301 on the opening side of the dust collecting tank 105, it becomes possible to exert a dust removing function on substantially the entire surface area of the filter 203.

[0021] The cleaning body 302 (see FIGS. 7 and 5) uses a material such as a brush or felt, so that the sucked cotton material or the like is likely to get entangled with the brush or felt, and the structure is such that dust is less likely to adhere to the opening side of the dust collecting tank 105. By the cleaning body 302 abutting against the filter 203 and suppressing the intrusion of cotton dust and large dust, when the filter device 106 is removed from the dust collecting tank 105, it prevents the scattering of the dust entangled with the cleaning body 302 and has the effect of scraping the dust adhering to the surface of the filter 203 and dropping it into the dust collecting tank 105.

[0022] In this embodiment, the material of the cleaning body 302 that always abuts against the substantially cylindrical surface of the filter 203 is described as a brush, but a member made of felt or the like can also have the same effect. By using a brush or felt member for the cleaning body 302, there is an advantage that the ventilation resistance does not increase significantly even when it abuts against the filter 203, and the dust collecting area on the outer peripheral surface of the filter 203 can be effectively utilized without degrading the suction performance. Furthermore, by using the cleaning body 302 having an antistatic effect, even if static electricity generated by the friction of dust occurs, it is possible to suppress obtaining discomfort during handling.

[0023] In addition, in the structure according to this embodiment, the dust collection tank 105 is formed in a can shape made by winding a cylindrical side plate such as a steel plate and a disk-shaped bottom plate by a winding method. Since the cleaning device 301 is fixed at two or more positions, it does not fall off even when the filter device 106 is detached from the dust collection tank 105, and can always be incorporated in the same position.

[0024] In this embodiment, in order to detachably fix the cleaning device 301 to the dust collection tank 105, a mounting supporter (not shown) is fixed with screws or the like to suppress the movement downward. Further, in order to suppress the movement upward, the step of a metal mounting plate (not shown) that holds the clamp 112 (see FIG. 7) attached to the appearance of the dust collection tank 105 is utilized. Furthermore, since the cleaning device 301 (see FIG. 3) is formed of an elastic material, it can be easily removed from the mounting plate or the like, and can be detached from the dust collection tank 105.

[0025] Since it is conceived that it can be easily removed even when the cleaning device 301 is soiled by long-term use or when parts are damaged by some impact, it can be kept clean by washing with water. Further, even when it is desired to replace parts, only the cleaning device 301 can be replaced, improving the serviceability and enabling replacement at low cost. Furthermore, due to the detachable structure, parts can be separated for each part, so that material separation is possible even at the time of disposal, which is also useful for resource utilization.

Explanation of Signs

[0026] 101 Electric blower 102 Main body case 103 Traveling caster 104 Caster base 105 Dust collection tank 106 Filter device 107 Motor base 108 Upper case 109 Handle 110 Suction port 112 Clamp 202 Airtight packing 203 Filter 204 Filter frame 205 Support frame 206 Dust remover 207 Dust removal lever 301 Cleaning device 302 Cleaning body

Claims

1. A main body case having an electric blower, A dust collection tank for collecting dust, An electric vacuum cleaner comprising a filter device detachable from the dust collection tank, wherein The filter device has a filter, a dust remover in contact with the filter, and a dust removal lever for driving the dust remover, The dust collection tank has a cleaning body in contact with the filter. The electric vacuum cleaner is characterized by this.

2. The electric vacuum cleaner according to Claim 1, wherein The cleaning body is provided on the inner peripheral surface of the dust collection tank on the dust collection tank opening side rather than the dust remover. The electric vacuum cleaner is characterized by this.

3. The electric vacuum cleaner according to Claim 2, wherein The cleaning device having the cleaning body is detachable from the dust collection tank. The electric vacuum cleaner is characterized by this.

4. The electric vacuum cleaner according to Claim 3, wherein The cleaning body is composed of a brush or felt. The electric vacuum cleaner is characterized by this.

5. The electric vacuum cleaner according to Claim 4, wherein The cleaning body is composed of a member having antistatic properties. The electric vacuum cleaner is characterized by this.

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