JP5169883B2 - Extension tube for vacuum cleaner and vacuum cleaner using the same - Google Patents

Description

  The present invention relates to an extension tube for a vacuum cleaner having a display unit for displaying information from a signal line, and a vacuum cleaner using the extension tube.

As this kind of conventional extension pipes for electric vacuum cleaners, there is one provided with a display part in the vicinity of a floor nozzle connection part (see, for example, Patent Document 1).
JP 2000-354575 A

  However, in the configuration of the vacuum cleaner as described above, in order to improve the visibility of the display unit to the user, the display unit is formed so as to protrude to the upper surface side, and for example, a sofa or a bed under the furniture. When the floor nozzle is inserted and operated, the protruding display portion hits the floor nozzle, making it difficult to operate the floor nozzle, resulting in an unusable extension tube for a vacuum cleaner.

  The present invention solves the above-described conventional problems, and forms a step portion having a small diameter on a cylindrical body side end surface of a connecting body in which one end is detachably connected to a floor nozzle and the other end is coupled to a cylindrical body. The display portion that is electrically connected to the signal line disposed from the end pipe side of the hose and displays information from the signal line is provided with a stepped portion having a small diameter from the end surface on the cylinder side of the connection body to the cylinder body. In this way, the visibility of the display unit from the user is improved, and the floor nozzle is not caught at the entrance corner under the furniture during cleaning work such as under the furniture. It is an object of the present invention to provide an extension tube for an electric vacuum cleaner with good operability and an electric vacuum cleaner using the same.

  In order to solve the above-described conventional problems, an extension tube for a vacuum cleaner of the present invention includes a connection body having a substantially cylindrical portion and one end detachably connected to a floor nozzle, and a substantially cylindrical portion of the connection body. A cylindrical body having one end coupled to the other end of the connection body such that the central axis is substantially the same as the central axis of the connection body, and the cylindrical body at a connection portion between the connection body and the tubular body A vacuum cleaner main body on the downstream side having an outer diameter smaller than the outer diameter of the substantially cylindrical portion of the connection body and forming a hollow disk-like wall portion on a surface substantially orthogonal to the central axis of the coupling portion An electronic circuit board having a light emitting element disposed on one side surface of the cylindrical body and having a light emitting element that is electrically connected to the signal line and emits light according to information from the signal line is disposed on the side surface of the connecting body. Then, a user emits light from the light emitting element to the hollow disk-shaped wall portion from the intake downstream side of the cylindrical body. It constitutes a display unit capable of certification.

  From the above configuration, the display unit is arranged so as to surround the outer periphery of the cylindrical body from the hollow disk-shaped wall portion toward the cylindrical body at the end of the connecting body of the extension pipe for the vacuum cleaner connected to the floor nozzle. Because it is provided in a substantially ring shape, the display unit is always located in the vicinity of the floor nozzle, so that it is possible to see the dirt level on the floor surface and the display unit at the same time. Is. Furthermore, since the display unit does not jump out of the substantially cylindrical part of the connection body connected to the floor nozzle, the display unit may get caught at the entrance corner under the furniture during cleaning work such as under the furniture. Therefore, it is possible to provide an extension tube for an electric vacuum cleaner with excellent usability of a floor nozzle and an electric vacuum cleaner using the same.

  The extension pipe for an electric vacuum cleaner of the present invention and the electric vacuum cleaner using the extension pipe can be used to simultaneously see the level of dirt on the floor surface and the display part during cleaning work, and have good visibility, and further under the furniture, etc. The purpose of this is to improve the operability of the floor nozzle without causing the display section to get caught in the entrance corner under the furniture.

  According to a first aspect of the present invention, there is provided a connection body having a substantially cylindrical portion and having one end detachably connected to a floor nozzle, and the central axis of the substantially cylindrical portion of the connection body is substantially the same as its own central axis. A cylindrical body having one end coupled to the other end of the connecting body, and an outer diameter of the cylindrical body at a joint portion between the connecting body and the cylindrical body is larger than an outer diameter of a substantially cylindrical portion of the connecting body. A hollow disk-shaped wall is formed on a surface that is small in diameter and substantially perpendicular to the central axis of the coupling portion, and a signal line from the downstream vacuum cleaner body is disposed on one side surface of the cylindrical body Further, an electronic circuit board having a light emitting element that is electrically connected to the signal line and emits light according to information from the signal line is disposed on a side surface of the connection body, and the hollow disk-shaped wall portion is connected to the cylinder body. The display unit is configured in a substantially ring shape so as to surround the outer periphery of the cylindrical body. Since it is constructed near the connection body of the extension pipe connected to the floor nozzle, the display unit will always be located near the floor nozzle, and the dirt level on the floor and the display unit can be seen at the same time, and visibility is good. In addition, by providing a display portion in a substantially ring shape from the connection body to the tubular body of the extension pipe formed with a smaller diameter than the connection body on the tip pipe side of the hose, the lower part of the furniture, etc. During the cleaning work, the display section does not get caught at the entrance corner under the furniture, and the operability of the floor nozzle can be improved.

  In the second invention, the information from the signal line of the first invention is sucked from the floor surface or the like by the floor nozzle, passes through the cylindrical body and the connection body, and the presence or absence of dust flowing into the vacuum cleaner body on the downstream side In the cleaning operation, the level of dirt on the floor and the information on dust from the display unit can be confirmed at the same time, and the dust present on the floor can be grasped more accurately.

  According to a third invention, the cylindrical body of the first or second invention is constituted by an inner tube and an outer tube provided so that the surface of the inner tube is slidable in the longitudinal direction, and the inner tube is connected. When the inner tube and the outer tube are slid to expand and contract to the shortest length, the end surface of the connecting body having the connecting portion with the inner tube and the connecting body side end surface of the outer tube are connected to the center axis. It is designed to have a gap in the direction, and by making the outer diameter of the connecting body and the outer diameter of the outer pipe constituting the cylindrical body substantially the same, when cleaning work such as under the furniture, An extension pipe connection mechanism that prevents the display section from being caught at the entrance corner and allows the display section to connect to the floor nozzle even if the length of the extension pipe is arbitrarily fixed by the adjustment mechanism when the floor nozzle is in good use Since it is configured on the installation side, the display unit will always be located near the floor nozzle. The display part can be seen at the same time, and even when the inner and outer pipes that make up the cylinder are expanded and contracted to the shortest length, the display part is not hidden and the visibility is further improved, and the cleaning workability is improved. As a result, usability can be improved.

  According to a fourth aspect of the present invention, the display unit according to any one of the first to third aspects is arranged in the direction of the central axis of the cylindrical body on the downstream side from the hollow disk-shaped wall portion that is a connecting portion between the connecting body and the cylindrical body. An electronic circuit board having a substantially horseshoe-shaped lens body provided along the outer periphery of the cylindrical body so as to have a certain width toward the end, and disposed on both ends of the horseshoe-shaped lens body and on a side surface of the connection body The light emitting element mounted on the lens body is opposed to each other, and the light of the light emitting element is projected from both end portions of the lens body to illuminate the display portion. Since it is wide along the outer periphery, visibility is improved, display information on the display unit is easily recognized, and usability can be improved.

  According to a fifth aspect of the present invention, an electronic circuit board having the light emitting device according to any one of the first to fourth aspects is disposed on the lower surface of the connection body, the display unit is along the outer periphery of the inner tube, and the lower surface. By positioning from the left and right to the top of the part that houses the electronic circuit board, not only when cleaning the normal floor surface, but also when cleaning in narrow places such as under the bed, In many cases, the floor nozzle is operated toward the back of the narrow place with the extension pipe tilted to the left and right, and as described above, the visibility of the display unit is improved and used even when the extension pipe is tilted to the left and right. Property can be improved.

  6th invention is equipped with the vacuum cleaner main body which has the dust collection chamber which collects dust, and the electric blower which generates suction | inhalation wind, The electricity of any one of 1st-5th invention is provided in the said dust collection chamber. This is a vacuum cleaner having a vacuum cleaner extension pipe connected thereto, and can provide an easy-to-use vacuum cleaner.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The extension pipe for vacuum cleaners in the 1st Embodiment of this invention is demonstrated using FIGS.

  FIG. 1 is a side view of the usage state of the extension pipe for a vacuum cleaner in the present embodiment. FIG. 2 is a side view of the extension tube for the electric vacuum cleaner. FIG. 3 is a longitudinal center sectional view of the extension tube for the vacuum cleaner. Further, FIGS. 4 and 5 are external perspective views showing the parts that are characteristic of the extension pipe for a vacuum cleaner of the present invention.

  The extension pipe 1 for an electric vacuum cleaner slides in the outer pipe 5 and the outer pipe 5 connected to the tip pipe 3 of the hose 2 and is configured to be stretchable and connected to the floor nozzle 4 and the like. 6, a fitting portion 7 is provided at one end of the outer pipe 5 on the tip pipe 3 side, and the floor of the floor nozzle 4 is provided at the end of the inner pipe 6 opposite to the outer pipe 5 side. A connection body 8 for coupling with the nozzle pipe 4a is provided. The connecting body 8 is hooked and fitted into the floor nozzle pipe 4a by a hooking claw structure (not shown) that pivots, and the vacuum cleaner extension pipe 1 and the floor nozzle 4 are connected and fixed. An equivalent structure is also formed for the tip pipe 3 of the hose 2 and is fixedly connected.

  The outer tube 5 and the inner tube 6 have a recess 18a in which a plurality of claw portions 51 of the push button 50, which is an adjustment mechanism biased by a spring 53, are formed on the lower surface side on the outer periphery of the inner tube 6, and lead inside The sliding position is fixed by press-contacting to the cover body B18 that accommodates the line B14, and the extension pipe 1 for the vacuum cleaner is adjusted to an arbitrary length so that it can expand and contract. A connection terminal A9 provided at the end of the outer pipe 5 on the end pipe 3 side is connected to a connection terminal (not shown) built in the end pipe 3 to be fed. A flat cable 12 that bends in a U-shape connected from the connection terminal A9 to the lead wire A10 and the connector A11 and follows the expansion and contraction of the inner tube 6, and a connector that is held and fixed to the outer tube 5 side end of the cover body B18 B13 is connected to the lead wire B14 and is electrically connected to the display substrate 15 on which the LED 16 which is a light emitting element stored and held in the substrate storage portion 20 is mounted. The flat cable 12 that bends in a U-shape connected by the lead wire A10 and the connector A11 and follows the expansion and contraction of the inner tube 6 is a cover body A17 that is fixed to the outer periphery of the outer tube 5, and the outer peripheral surface of the outer tube 5 It is stored in. The display board 15 causes the light emitting element 16 to emit, turn off, or blink the presence or absence of dust sucked by the vacuum cleaner main body 70 or the amount of dust sucked by the electric signal fed from the end pipe 3 side. is there. Alternatively, it is also possible to express and display the amount of dust accumulated in the dust collection chamber of the vacuum cleaner main body 70 and the abnormal state of operation.

  In order to measure the presence or absence of dust or the amount of dust to be sucked, a dust sensor 71 is provided near the end of the hose 2 on the side connected to the vacuum cleaner main body 70 as shown in FIG. Is provided.

  The configuration of the dust sensor 71 will be described in more detail. 72 is a light emitting unit that emits light into an air passage through which dust flows; 73 is a light receiving unit that receives light from the light emitting unit 72 and outputs a signal according to the amount of light received; and the light emitting unit 72 in the air passage through which dust passes. It is provided facing. The output Vs from the light receiving unit is amplified by the amplification means A and the amplification means B, respectively. The amplification means A is composed of an amplification unit A and a filter unit A composed of a high-speed arithmetic processing CPU such as an operational amplifier or a DSP, and outputs a signal Va obtained by amplifying Vs around a specific frequency band A. Is converted into a pulse by the pulse conversion means A, and its output Sa is input to a dust discrimination means for discriminating the amount of dust and the type of dust.

  Similarly, the amplifying means B is composed of an amplifying part B and a filter part B comprising a high-speed arithmetic processing CPU such as an operational amplifier or a DSP, and outputs a signal Vb obtained by amplifying Vs around a specific frequency band B. Is converted into a pulse by the pulse conversion means B, and the output Sb is input to the dust discrimination means. The dust discriminating means is provided so as to judge the size and amount of dust to be sucked by inputting two signals Sa and Sb.

  Reference numeral 74 denotes a display unit for informing the user of the presence / absence, size, etc. of dust in response to a change in the output signal of the dust discrimination means. The dust sensor 71 includes the light emitting unit 72, the light receiving unit 73, the display unit 74, a dust discrimination unit, and the like.

  When the outer tube 5 and the inner tube 6 are connected to the vacuum cleaner main body 70 and used, they are passages for conveying dust by the intake air sucked by the vacuum cleaner main body 70, and are a body for the user. In order to reduce the weight and reduce the size for reducing the load, it is formed of a thin extruded aluminum tube material having a certain degree of strength and a resin tube of blow molding or injection molding. Further, the fitting portion 7 with the tip pipe 3 and the connecting body 8 with the floor nozzle pipe 4a need to be strong enough to eliminate the rattling of the fitting and hold them, so that they are formed thick. As shown in FIG. 5, the end of the connecting body 8 on the inner tube 6 side has a hollow disk-like wall 75, and a step is formed from the outer diameter ΦD of the connecting body 8 to the outer diameter Φd of the inner tube 6. In addition, a lens body (display unit) 19 made of a substantially transparent resin or the like is provided in a substantially ring shape at the stepped portion. The lens body 19 is disposed along the outer periphery of the inner tube 6 except for the substrate housing portion 20 on the lower surface side. The outer peripheral side surface of the lens body 19 forms an inclination as shown in FIGS.

  The LED 16 of the display substrate 15 shown in FIG. 6 is arranged to face the end face 21 of the substantially horseshoe-shaped lens body 19 along the outer periphery of the inner tube 6.

  The effect | action by the said structure is as follows. When the LED 16 emits light, light enters from the end surface 21 of the lens body 19 and travels through the lens body 19, and the light hitting the outer peripheral surface of the lens body 19 is reflected, and the lens body 19 on the outer tube 5 side is reflected. As a result, light is also emitted to the exposed surface of the hose 2 and can be visually recognized by a user who holds and operates the tip pipe 3 of the hose 2. Depending on the display state of the display substrate 15 (for example, lighting, extinguishing, flashing), the vacuum cleaner main body 70 displays the amount of dust sucked, and if there is no sucking dust, the cleaning operation is unnecessary. This makes it possible for the user to recognize this and to reduce the domestic labor.

  Further, since the display surface of the lens body 19 is formed so as to be inclined toward the outer diameter of the inner tube 6 and the outer diameter becomes narrower, cleaning is performed in a place where a gap from the floor surface is small under a bed or a sofa. When the floor nozzle is inserted, the display unit formed by the lens body 19 does not hit the lower corner of the bed, sofa, etc. Further, when the lens body 19 is pulled out, the lens body 19 is provided with an inclined surface so that it is not easily caught. Easy operation even in narrow gaps.

  The lens body 19 is formed by molding a substantially transparent resin or the like, and the diffused reflection of light is performed by introducing a fine particle diffusing material into the material or by applying a graining process to the surface opposite to the display surface of the lens body 19. It is possible to increase the amount of light emitted from the display surface. Further, it is possible to change the display color of the display surface by coloring or arranging a colored object on the surface opposite to the display surface of the lens body 19.

  As described above, the extension pipe for an electric vacuum cleaner and the electric vacuum cleaner using the same according to the present invention can improve the visibility of the display and eliminate the catch on the furniture being cleaned on the display portion. Can be made easy to use.

The side view of the use condition of the extension pipe for vacuum cleaners in Embodiment 1 of this invention Side view of extension pipe for vacuum cleaner Same sectional view in the length direction of the extension tube for vacuum cleaner The external appearance perspective view which shows the site | part used as the characteristic of the extension pipe for vacuum cleaners The external appearance perspective view which shows the site | part used as the characteristic of the extension pipe for vacuum cleaners In the side view of FIG. 2 showing the extension pipe for a vacuum cleaner, the main part sectional view showing a state cut by the plane represented by AA Sectional drawing which shows the circumference | surroundings of the dust sensor provided in the end vicinity of the hose connected with the extension pipe for vacuum cleaners

1 Extension tube for vacuum cleaner 5 Outer tube (tubular body)
6 Inner pipe (cylinder)
8 Connector 15 Display board (electronic circuit board)
16 Light-emitting element 19 Lens body (display unit)
70 Main body of vacuum cleaner 75 Hollow disk-shaped wall

Claims (6)

A connection body having a substantially cylindrical portion and having one end detachably connected to a floor nozzle, and the other end of the connection body so that a central axis of the substantially cylindrical portion of the connection body is substantially the same as its own central axis. A cylindrical body having one end coupled to the coupling body, and the coupling body is configured such that an outer diameter of the cylindrical body at a coupling portion between the coupling body and the tubular body is smaller than an outer diameter of a substantially cylindrical portion of the coupling body. A hollow disk-shaped wall is formed on a surface substantially orthogonal to the central axis of the portion, a signal line from a downstream vacuum cleaner body is disposed on one side surface of the cylindrical body, and the signal line An electronic circuit board having a light emitting element that is electrically connected to the signal line and emits light according to information from the signal line is disposed on a side surface of the connection body, and the cylinder body is directed from the hollow disk-shaped wall portion toward the cylinder body. An extension tube for a vacuum cleaner in which the display portion is configured in a substantially ring shape so as to surround the outer periphery of the vacuum cleaner. The information from the signal line is related to the presence or absence of dust or the amount of dust that is sucked by the floor nozzle from the floor surface and the like, passes through the cylinder and the connection body, and flows to the downstream vacuum cleaner body. 1. An extension tube for an electric vacuum cleaner according to 1. The cylindrical body is composed of an inner tube and an outer tube provided so that the surface of the inner tube is slidable in the longitudinal direction. The inner tube is coupled to the connecting body, and the inner tube and the outer tube are slid. The end face of the connecting body having a coupling portion with the inner pipe and the connecting body side end face of the outer pipe have a gap in the central axis direction when expanded and contracted to the shortest length. Extension tube for electric vacuum cleaners. The display unit extends along the outer periphery of the cylindrical body so as to have a certain width from the hollow disk-shaped wall portion, which is a connecting portion of the connecting body and the cylindrical body, toward the central axis direction of the downstream cylindrical body. A substantially horseshoe-shaped lens body provided; both ends of the horseshoe-shaped lens body are opposed to light emitting elements attached to an electronic circuit board disposed on a side surface of the connection body; The extension tube for a vacuum cleaner according to any one of claims 1 to 3, wherein light from the light emitting element is projected from a portion to cause the display portion to shine. The extension pipe for a vacuum cleaner according to any one of claims 1 to 4, wherein an electronic circuit board having a light emitting element is disposed on a lower surface of the connection body. An extension tube for a vacuum cleaner according to any one of claims 1 to 5, further comprising a vacuum cleaner body having a dust collection chamber for collecting dust and an electric blower for generating suction air. A vacuum cleaner that communicates with each other.

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