JP4613774B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner provided with a hand handle body.

  In this type of conventional vacuum cleaner, the first tube body is not bent, and the hand handle body includes the center axis of the first tube, the center axis of the connecting tube, and the second tube body. The central axis of one connection portion is configured to match (for example, see Patent Document 1).

Further, as another form, the first tube body and the second tube body are not bent, and the hand handle body includes the center axis line of the first tube body, the center axis line of the connecting tube, and the second tube body. The center axis line of each other is matched (for example, see Patent Document 2).
Japanese Patent No. 3286250 Japanese Patent No. 3656641

  However, in the above-described conventional hand handle body, the central axis of the connection tube and the central axis of the first tube body coincide with each other, but the central axis of the second connection portion of the second tube body is the first tube body. Therefore, there is a problem that the suction passage is bent, the pressure loss increases, the suction performance is lowered, and noise is easily generated.

  In another embodiment, since the central axis of the connecting pipe, the central axis of the first pipe, and the central axis of the second pipe match, the pressure loss is small, but the first pipe is also the second pipe. Since the tube is not bent, the suction hose is directed upward at the suction hose connection part of the second tube and the weight load of the suction hose is applied to the handle body at the time of cleaning. There was a problem of being bad.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and to provide a hand handle body that has good usability without increasing pressure loss and reducing suction performance, and to improve cleaning workability.

  To achieve the above object, the present invention provides a vacuum cleaner body incorporating an electric blower, a suction hose having one end connected to the body, a hand handle body provided at the other end of the suction hose, A connection pipe that is attached to the hand handle body and communicates with the hand handle body; and a suction body that is attached to the connection pipe and communicates with the connection pipe, the hand handle body having a central axis of the connection pipe A first tubular body which is bent and formed to have a central axis B substantially coincident with A and a central axis C which forms a predetermined angle β with the central axis B, and a first connecting portion at one end. And a second tube body bent at the other end with a second connection portion, and the first connection portion has a center axis D substantially coincident with the center axis C and the first connection portion. 1 is connected to the tube body in a rotatable manner, and the second connection portion is Its central axis E is a vacuum cleaner, characterized in that connected to the suction hose with forming the angle β substantially the same angle γ with respect to the central axis D of the first connecting portion.

  As a result, when the user stands with the hand handle body in his hand during normal floor cleaning, the suction hose hangs diagonally downward, and the vacuum cleaner body is easily pulled and moved. It is possible to avoid getting in the way of the hand holding the hand handle body. Further, when the second tube is rotated with respect to the first tube, the center axis A of the connection tube and the center axis of the second connection portion can be substantially parallel to each other. The conveyance path can be made substantially straight, and the suction property can be improved. In addition, when cleaning a low place such as under a bed, the connecting pipe can be laid in a substantially horizontal state, and the suction hose can be made substantially parallel to the connecting pipe, so that it is a narrow place. In addition, it becomes possible to easily clean a place with a low height to the back.

  According to the present invention, it is possible to provide a hand handle body with good usability without increasing pressure loss and reducing suction performance, and improving cleaning workability.

  According to a first aspect of the present invention, there is provided a main body of a vacuum cleaner incorporating an electric blower, a suction hose having one end connected to the main body, a hand handle body provided at the other end of the suction hose, and the hand handle body. A connection pipe that is attached and communicates with the hand handle body; and a suction body that is attached to the connection pipe and communicates with the connection pipe; and the hand handle body substantially coincides with a central axis A of the connection pipe A first tube body that is bent and formed to have a central axis B and a central axis C that forms a predetermined angle β with the central axis B, and that is connected to the connecting pipe, a first connecting portion at one end, and a first connecting portion at the other end A second tubular body that is bent and formed with a second connecting portion, and the first connecting portion has a center axis D substantially coincident with the central axis C and the first tubular body. The second connecting portion is rotatably connected, and its center axis E is the front. It was vacuum cleaner, characterized in that connected to the suction hose with forming the angle β substantially the same angle γ with respect to the central axis D of the first connecting portion.

  As a result, when the user stands with the hand handle body in hand during normal floor cleaning, the suction hose hangs diagonally downward, and the vacuum cleaner body can be easily pulled. It can be moved so that it does not get in the way of the hand holding the hand handle. Further, when the second tubular body is rotated with respect to the first tubular body, the central axis A of the connecting pipe and the central axis of the second connecting portion can be substantially parallel to each other. In addition, the dust transport path can be made substantially straight, and the suction property can be improved. Further, when cleaning a low place such as under the bed, the connecting pipe can be laid in a substantially horizontal state, and the suction hose can be substantially parallel to the connecting pipe. It is possible to easily clean a narrow place or a low place to the back.

  In the second invention, the minimum angle α formed between the central axis B and the central axis of the second connecting portion formed when the second tubular body is rotated with respect to the first tubular body is set to 90 degrees. It is in the range of ~ 160 degrees, and when cleaning the floor, the suction hose hangs diagonally downward when the user stands with the hand handle in his hand. The main body can be easily pulled and moved so that it does not get in the way of the hand holding the hand handle.

  According to a third aspect of the present invention, there is provided an extending portion extending from the vicinity of the bent portion of the first tubular body to the suction hose side substantially parallel to the central axis B, and a connecting tube side from an end portion of the extended extending portion. And a second tubular body when the second tubular body rotates with respect to the first tubular body. A vacuum cleaner having a configuration in which the extended portion does not collide with the extended portion.

  The space between the handle portion and the extension portion needs to have an appropriate size in order to grasp the handle portion. However, if the lower surface of the extension portion is not made a recess, the second tube body can be rotated. In order to avoid this, the position of the extended portion must be provided higher, that is, the position of the handle portion inevitably becomes high, and this is an obstacle when cleaning a low place to the back. In addition, when the attachment position of the second tubular body is provided below without changing the position of the extending portion, the central axis B of the first tubular body and the central axis of the second connecting portion are substantially parallel. The center axis B and the center axis of the second connecting portion are increased in distance, and when cleaning a low place such as under the bed, it is difficult to lay the connecting pipe low. As a result, the passage pressure loss also increases. As in the present invention, by making the lower surface of the extending portion a concave portion, the distance between the central axis B and the central axis of the second connecting portion can be reduced without changing the position of the handle portion, It can be laid down lower, the passage pressure loss can be reduced, and the usability is further improved.

  According to a fourth aspect of the present invention, there is provided a vacuum cleaner in which the grip portion has a tapered shape in which a connection side with the extending portion is thin and a non-connection side is thick.

  Since it is important for the human hand to grasp the little finger side firmly when grasping an object, the tapered shape can further improve the usability because the little finger can be grasped firmly. In addition, by using the tapered shape, even a person with various hand sizes can be adjusted to grasp the position of the desired thickness, so that the grip feeling is further improved and the operability is improved.

  The fifth aspect of the invention is an electric vacuum cleaner having a constricted shape in the vicinity of the approximate center of the handle.

  When lifting the mouthpiece, gripping the front of the handle makes it easier to lift because the distance from the mouthpiece becomes smaller, but when gripping the front of the handle, the little finger is firmly Because it can be gripped, operability is further improved.

  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)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an overall perspective view of the electric vacuum cleaner according to the present embodiment. In FIG. 1, reference numeral 1 denotes an electric vacuum cleaner main body (hereinafter referred to as “main body”) which includes an electric blower 4 and dust collecting means 5, and a connection pipe 3 provided at one end of the suction hose 2 at the front of the main body 1. A suction port is provided to which is detachably connected.

  The other end of the suction hose 2 is provided with a hand handle body 6 having a handle portion 33 that is gripped during cleaning.

  Reference numeral 7 denotes a telescopic or jointable connecting pipe, one end of which is detachably connected to the hand handle body 6, and the other end is detachably connected to a mouthpiece 8 incorporating a rotating brush driven to rotate by an electric motor. The Each of the connecting pipe 7 and the suction hose 2 has a power supply line (not shown) for supplying power to the motor (not shown) of the suction body 8.

  The main body 1 has a pair of wheels 9 and one rotatable wheel 10 and can be moved on the floor surface (cleaning surface) via the suction hose 2 by the hand handle body 6. Yes. The suction hose 2 has a function as a transport passage for transporting dust into the main body 1 and a function as a moving pulling means when the main body 1 is moved. In this embodiment, the suction hose 2 has a bellows-like flexibility. A hose with a characteristic is adopted.

  The hand handle body 6 has a function of communicating the suction hose 2 and the connecting pipe 7, a function of moving (running) the main body 1, a function of operating the posture of the mouthpiece 8, and a function of controlling the operation of the main body 1. And. The hand handle body 6 is configured to connect the suction hose 2 and the connection pipe 7 to form a dust conveyance path that allows the suction hose 2 and the connection pipe 7 to communicate with each other. The connection pipe 3 is provided with detection means (not shown) for detecting the amount of sucked dust, and the input of the electric blower 4 is controlled by the amount of dust.

  Next, details of the hand handle 6 will be described. 2 is a perspective view of the hand handle body, FIG. 3 is an exploded perspective view of the hand handle body, FIG. 4 is a cross-sectional view of the hand handle body, FIG. 5 is a side view of the hand handle body, and FIGS. FIG. 8 is a plan view of the hand handle body, FIG. 9 is a state diagram of the cleaning operation of the present embodiment, and FIG. 10 is a perspective view of the hand handle body gripped by hand.

  2 to 7, reference numeral 31 denotes a first tube body of the hand handle body 6 described above, and this first tube body 31 has a center that coincides with the central axis A of the connection tube 7 as shown in FIG. It has an axis B and is connected to the end of the connecting pipe 7 by fitting. The first tubular body 31 is a bent pipe that is bent so as to have a central axis C that forms a predetermined angle with the central axis B.

  In addition, the second tube body 32 rotatably connected to the first tube body 31 has a center axis D that matches the center axis C of the first tube body 31, as shown in FIG. The first connecting portion 34 and the second connecting portion 35 having a central axis E bent so as to form a predetermined angle with the central axis D of the first connecting portion 34 are provided.

  The first connecting portion 34 of the second tubular body 32 is inserted into the first tubular body 31 so as to be relatively rotatable, and the first tubular body 31 and the second tubular body 32 are connected to each other. The first connecting portion 34 is connected to the first connecting portion 34 so as not to come off by appropriate means, whereby the first connecting portion 34 can be rotated around the central axis C of the first tubular body 31. In addition, as shown in FIG. 4, in the present embodiment, it is possible to adopt any means for preventing the connection between the first tube body 31 and the first connection portion 34 of the second tube body 32. An annular groove 36 is provided in the first connecting portion 34, and after inserting the first connecting portion 34 into the first tubular body 31, a part of the retaining piece 38 is annularly formed from the opening 37 of the first tubular body 31. By being inserted into the groove 36, the first connecting portion 34 and the first tubular body 31 are connected so as not to come off. The suction hose 2 is connected to the second connection portion 35 of the second tubular body 32. As shown in FIG. 2, a hose cover 39 is provided on the outer periphery of the suction hose 2 attached to the second tubular body 32.

  As shown in FIG. 4, the first tube body 31 and the second tube body 32 are assembled to complete the hand handle body 6, and the suction hose 2 and the connecting pipe 7 are attached to the hand handle body 6. The center axis B of the first tube 31 (that is, the center axis A of the connecting pipe 7) and the center axis E of the second connecting portion (measured counterclockwise from the center axis B to the center axis E). ) The maximum angle α is set to be in the range of 90 ° to 160 °. In addition, an angle β (measured clockwise from the central axis B toward the central axis C) between the central axis B of the first tubular body 31 (that is, the central axis A of the connecting pipe 7) and the central axis C and the first axis The angle γ (measured clockwise from the central axis D to the central axis E) formed by the central axis D of the first connecting portion 34 and the central axis E of the second connecting portion 35 is provided to be substantially the same angle. Yes. In this embodiment, α is 145 ° and β and γ are 17.5 °.

  The handle portion 33 covers the upper portion of the first tubular body 31, and is below the cover body 40A extending from the vicinity of the bent portion of the first tubular body 31 to the suction hose 2 side in the substantially extending direction of the connecting tube 7. The cover body lower part 40B is composed of a cover body lower part 40B that is curved toward the connecting pipe 7 from the end surface of the extending part of the cover body lower part 40A, and the cover body upper part 41 covers the upper part of the cover body lower part 40B. An angle θ between the cover body 41 and the central axis A of the connecting pipe 7 is set to be 30 ° to 50 °. Between the lower cover body 40 </ b> B and the upper cover body 41, a control unit 50 that controls the electric blower of the cleaner body 1 and the electric motor of the suction body 8 is housed, and the control unit 50 is operated. The operation unit 51 and a display unit 52 indicating that the input of the electric blower is controlled according to the amount of dust by the detection means provided in the connection pipe 3 are provided in front of the handle unit 33.

  The operation unit 51 is composed of a plurality of switches. As shown in FIG. 8, when all the switches are provided in the horizontal direction or in a fan shape, the operation unit 51 becomes larger in the horizontal direction, and the cleaning floor surface becomes larger. Since it may become difficult to see, the ON / OFF switch of the motor of the suction body 8 that is less frequently used is arranged farther from the grip portion than the switch that controls the electric fan of the vacuum cleaner body 1 that is frequently used. As a result, the width of the operation unit 51 is reduced.

  Between the upper side of the connecting pipe 7 side of the first pipe body 31 and the lower cover body 40A, a terminal (not shown) for detachably connecting a terminal connected to the power supply line of the connecting pipe 7 and the connecting pipe 7 The hook body 61 for connecting and fixing to the first tube body 31 is held. Further, the first tube body 31 has an extended portion 42 that extends from the vicinity of the bent portion of the first tube body 31 toward the suction hose 2 in the substantially extending direction of the connection tube 7, similarly to the lower cover body 40 </ b> A. A lead wire for supplying power from the power supply line of the suction hose 2 to the control unit 50 is held between the extending portion 42 and the lower cover body 40A. After the lead wire is held by the extending portion 42, the holding portion 44 is fixed to the extending portion 42 so as to cover the lead wire in order to prevent the lead wire from coming off during assembly. As shown in FIG. 6, the lower surface of the extending portion 42 is formed in the concave portion 43 so as not to interfere when the second tubular body 32 rotates.

  Further, a support column 70 is provided substantially upward from the vicinity of the bent portion of the first tubular body 31, and a connecting body 71 that connects the lower cover body 40A and the lower cover body 40B is inserted into the outer periphery of the support column 70. It is fixed.

  Further, as shown in FIG. 10, below the handle portion 33, a projecting portion 80 is provided integrally with the lower cover body 40 on the end surface of the extending portion 42 to assist the lifting of the suction body 8.

  Further, as shown in FIG. 7, the handle portion 33 is formed so that the cross-sectional shape thereof is a substantially elliptical shape in which the length y in the vertical direction is 1.0 to 1.2 times the length x in the width direction. is doing.

  The operation of the above configuration is as follows.

  The minimum angle α formed by the central axis B of the first tubular body 31 (that is, the central axis A of the connecting pipe 7) and the central axis E of the second connecting portion is set to be 90 ° to 160 °, When the user stands while holding the handle 33 of the hand handle body 6 during cleaning, the suction hose 2 is slanted downward, and the cleaner body 1 can be easily pulled and moved. This is to prevent the hand having the handle 33 from getting in the way. Furthermore, the angle β between the central axis B of the first tubular body 31 (that is, the central axis A of the connecting pipe 7) and the central axis C, the central axis D of the first connecting part 34, and the central axis of the second connecting part 35 Since the angle γ formed with E is set to be substantially the same angle, when the first connection portion 34 of the second tubular body 32 rotates with respect to the first tubular body 31, the second connection portion The central axis E of 35 can also be made substantially parallel to the central axis B of the first tubular body 31 (that is, the central axis A of the connecting pipe 7). In this state, the dust conveyance path is substantially straight. And can improve the inhalability. Further, when cleaning a low place such as under the bed as shown in FIG. 9, in FIG. 9 (c), the suction hose 2 is stretched, so that the connecting pipe 7 may be in a horizontal state. In FIG. 9 (b), the connecting pipe 7 is horizontal, but the suction hose 2 projects sideways, so the suction hose 2 becomes an obstacle in a narrow width direction, and the workability is reduced. In this embodiment, as shown in FIG. 9A, the suction hose 2 is moved to the first tube body by rotating the second tube body 32 by about 180 ° relative to the first tube body 31. 31 so that the connection pipe 7 can be laid in a substantially horizontal state, and the suction hose 2 can be substantially parallel to the connection pipe 7, It is possible to easily clean a narrow place or a low place to the back, Also a good user-friendly in terms of. Further, as shown in FIG. 6, the lower surface of the extending portion 42 of the first tubular body 31 is formed in the concave portion 43 so as not to interfere when the second tubular body 32 rotates. Without increasing the height, the distance between the first tubular body 31 and the suction hose 2 becomes closer, the connecting pipe 7 can be laid down lower, and the usability is further improved.

  As shown in FIG. 8 (a), the switch provided in the operation unit 51 has a switch that controls the electric blower 4 of the cleaner body 1 that is frequently used in the switch arranged in the lateral direction at substantially the same distance from the grip. By disposing the ON / OFF switch of the motor of the mouthpiece 8 that is used less frequently away from the grip portion, the switch that is used frequently can be operated without changing the position of the grip portion. In addition, even if a switch that is less frequently used is disposed slightly away from the grip portion, it is not inconvenient in the actual cleaning work, and conversely, the cleaning workability can be improved by reducing the lateral width of the operation section 51. Further, with the operability of the switch as the top priority, as shown in FIG. 8B, the switch for controlling the electric blower 4 is arranged in a horizontal direction or a fan shape so as to be located at substantially the same distance from the position where the handle portion 33 is gripped. The ON-OFF switch of the motor of the mouthpiece 8 that is provided and used less frequently may be used by pressing the switch for controlling the electric blower 4 twice.

  Since the rear part of the lower cover body 40B is curved and is a closed space toward the rear, when carrying out the cleaning work with the handle 33, it is pushed with a palm when pushing and hooked with the belly of a finger when pulling. It is possible to prevent the hand from separating even if the handle portion 33 is not firmly grasped during cleaning. Further, conventionally, the angle formed by the lower cover body 40B and the central axis A of the connection pipe 7 is 50 ° to 90 °, and when cleaning the floor surface, the connection pipe 7 and the mouthpiece 8 are connected to each other. The pushing force is easy to transmit, but when moving the suction body 8 by cleaning the stairs, etc., it was difficult to lift because the angle with the central axis A was large. In the embodiment, the angle formed between the lower cover body 40B and the central axis A of the connecting pipe 7 is set to be 20 ° to 45 ° so that the angle with the central axis A is not as large as possible. It can be operated without changing the position of the gripping part, either in the front-rear operation or in the lifting operation such as cleaning the stairs. Further, since the suction body 8 rotates a rotating brush (not shown) by the electric motor in the same direction as the traveling direction, when the suction body 8 is pushed by floor cleaning, the suction body is caused by the resistance force between the rotary brush and the floor surface. Since 8 moves forward, a large force is not required for pressing, and there is no problem in usability even if the angle with the central axis A is small.

  As shown in FIG. 10, by providing the convex portion 80 below the handle portion 33, the lower side of the hand is applied to the convex portion 80 during the lifting operation of the suction body 8 such as cleaning the staircase. It can be a fulcrum and the lifting force can be reduced. In the present embodiment, the convex portion 80 is integrated with the lower cover body 40B, but the same effect can be expected as a separate part, and of course, it may be provided on the extended portion 42 or the upper cover body 41. Further, even if the convex portion 80 is movable and can be fixed at an arbitrary position, it can be used in various sizes of hands, so that the usability is improved.

  As shown in FIG. 7, by making the cross-sectional shape of the handle portion 33 into a vertically long cross-sectional shape, the grip feeling is improved and the operation of rotating the hand handle body 6 to the left and right also has a lateral area of the handle portion 33. Increase and easy to operate. In addition, since it is important for the human hand to grip the little finger side firmly when gripping an object, if the handle portion 33 is formed into a tapered shape with the operation portion 51 side thicker and the convex portion 80 side thinner, Usability is further improved due to a firm grip. In addition, by using a tapered shape, even a person with various hand sizes can be adjusted to grasp the position of the desired thickness, so that the grip feeling is further improved. In addition, even if the grip portion 33 is formed in a constricted shape near the center, it can be adjusted so that people with various hand sizes can grasp the position of the desired thickness, thereby further improving the grip feeling.

  Further, the handle 33 may be covered with a soft body, formed into a corrugated shape that follows a finger when the lower surface is gripped by actual cleaning, and further the antibacterial treatment is applied to the soft body. Can be further improved.

  When lifting the suction body 8, stress concentrates on the connection body 71, but a column 70 is integrally provided substantially above the vicinity of the bent portion of the first tubular body 31, and a cover is provided on the outer periphery of the column 70. Since the connecting body 71 connecting the lower body 40A and the lower cover body 40B is inserted and fixed by screwing, sufficient strength can be secured.

  As described above, the vacuum cleaner according to the present invention can provide a hand handle body with good usability without increasing pressure loss and reducing the suction performance, and can provide a vacuum cleaner with high operability. Is.

The perspective view of the vacuum cleaner which shows the 1st Embodiment of this invention The perspective view of the hand handle body of the vacuum cleaner The exploded perspective view of the hand handle body of the vacuum cleaner Cross-sectional view of the handle of the vacuum cleaner Side view of the handle of the vacuum cleaner (A) Side view of the hand handle body of the vacuum cleaner (b) Cross section of the main part of the hand handle body of the vacuum cleaner (b) (A) Side view of the hand handle body of the vacuum cleaner (b) Cross section of the main part of the hand handle body of the vacuum cleaner (b) (A) The top view of the hand handle body of the vacuum cleaner (b) The main part enlarged plan view of the hand handle body of the vacuum cleaner (b) (A) The state figure which cleans the low place near the floor of the vacuum cleaner, etc. (b) The state figure which cleans the low place near the floor etc. of the vacuum cleaner. Other state diagrams for cleaning low places close to floors, etc. The perspective view of the state which grasped the hand handle body of the vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Suction hose 3 Connection pipe 4 Electric blower 6 Hand handle body 7 Connection pipe 8 Suction body 31 1st pipe body 32 2nd pipe body 33 Handle part 34 1st connection part 35 2nd connection part 43 Recessed part

Claims (5)

A main body of a vacuum cleaner incorporating an electric blower, a suction hose having one end connected to the main body, a hand handle body provided at the other end of the suction hose, and the hand handle attached to the hand handle body A connecting pipe that communicates with the body, and a suction body that is attached to the connecting pipe and communicates with the connecting pipe, wherein the hand handle body has a central axis B and the center that substantially match the central axis A of the connecting pipe A first tubular body that is bent and formed to have a central axis C that forms an angle β with the axis B and is connected to the connecting pipe, a first connecting portion at one end, and a second connecting portion at the other end. A second tube body bent and formed, and the first connection portion is rotatably connected to the first tube body with a center axis D substantially matching the center axis C, The second connecting portion has a central axis E of the first connecting portion. Vacuum cleaner, characterized in that connected to the suction hose with respect to the central axis line D forms the angle β is substantially the same angle gamma. The minimum angle α formed between the central axis B and the central axis of the second connecting portion, which is formed when the second tubular body is rotated with respect to the first tubular body, is in the range of 90 degrees to 160 degrees. The vacuum cleaner according to claim 1. It is formed by extending from the vicinity of the bent portion of the first tubular body to the suction hose side substantially parallel to the central axis B, and from the end portion of the extended extending portion to the connecting tube side. A grip portion and a recess provided on the lower surface of the extension portion, and the second tube body and the extension portion when the second tube body rotates with respect to the first tube body. The electric vacuum cleaner according to claim 1 or 2, which is configured not to collide. The electric vacuum cleaner according to claim 3, wherein the handle portion has a tapered shape in which a connection side with the extending portion is thin and a non-connection side is thick. The electric vacuum cleaner according to claim 3, wherein the grip portion has a constricted shape in the vicinity of the center.

Images