JP2009273583A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner including a telescopic extension tube having a simple structure and adjustable to a short length. <P>SOLUTION: The vacuum cleaner 1 includes a suction nozzle body 6, a first telescopic tube body 10 removably connected to the suction nozzle body 6, a second telescopic tube body 20 removably connected to the first tube body 10, and a handle tube 4 removably connected to the second tube body 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner including a telescopic extension tube.

2. Description of the Related Art A vacuum cleaner having a telescopic extension tube that can change an axial length is known. Conventionally, there has been proposed a vacuum cleaner having an extension tube including an inner tube and an outer tube, which can accommodate the inner tube in the outer tube by an arbitrary length (see, for example, Patent Document 1). Moreover, the vacuum cleaner which has the extension pipe | tube currently formed in the three-stage expansion-contraction type is proposed (for example, refer patent document 2).
Japanese Patent Laid-Open No. 9-24001 JP 2003-245230 A

  With the conventional two-stage telescopic extension tube, the extension tube cannot be shortened to a length shorter than the length of the outer tube, so adjustment of the length of the expansion tube is insufficient, such as when cleaning around the hand. There was a problem of being bad and requiring a large storage space. The three-stage telescopic extension tube has a relatively short outer tube compared to the two-stage telescopic tube, and the length of the tube can be adjusted to be shorter, making it easier to use the vacuum cleaner when cleaning around and storing it. Will improve.

  However, the three-stage telescopic extension tube described in Patent Document 2 has three pipes combined so as to be thicker in order from the suction port side, and a three-stage short pipe is nested. Since the structure is such that the tube length is shortened by sequentially inserting the tube, the expansion / contraction extension tube is thick and heavy. In addition, it is necessary to have a structure in which all three stages are extended in conjunction with one button, and there is a problem that the structure of the expansion / contraction extension tube becomes complicated.

  The present invention has been made in view of the above problems, and a main object of the present invention is to provide a vacuum cleaner including a stretchable extension tube that can be adjusted to a short tube length with a simple structure.

  The vacuum cleaner according to the present invention includes a suction port body, a stretchable first tube detachably connected to the suction port body, and a stretchable second tube detachably connected to the first tube body. A body and a proximal tube detachably connected to the second tubular body.

  The first tubular body includes a straight tubular first member connectable to the suction port body, and a straight tubular second member through which the first member can penetrate the inside, and is coupled to the second tubular body. When contracting the first tubular body, the rear end portion of the first member may be inserted into the second tubular body.

  The first tubular body may be directly connectable to the proximal tube. When the first tubular body directly connected to the proximal tube is contracted, the rear end portion of the first member may be inserted into the proximal tube.

  Flexibility to slide the surface to be cleaned on at least one of the tip of the second tube connected to the first tube and the tip of the first tube connected to the suction port A member may be provided.

  According to this vacuum cleaner, since the first tube body and the second tube body can expand and contract, respectively, by contracting both the first tube body and the second tube body, the expansion / contraction extension tube can be shortened. Can be adjusted. Since both the first tubular body and the second tubular body are detachable, the first tubular body and the second tubular body can be housed in a smaller space by removing and housing both the first tubular body and the second tubular body.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  In the embodiments described below, each component is not necessarily essential for the present invention unless otherwise specified. In the following embodiments, when referring to the number, amount, etc., unless otherwise specified, the above number is an example, and the scope of the present invention is not necessarily limited to the number, amount, etc.

  FIG. 1 is a schematic perspective view showing a vacuum cleaner according to an embodiment of the present invention. As shown in FIG. 1, the vacuum cleaner 1 includes a cleaner body 2, an extension hose 3, a hand tube 4, an extendable extension tube 5, and a suction port body 6. Inside the vacuum cleaner main body 2, a dust collector, a negative pressure generating source, and the like are installed. The extension hose 3, the hand tube 4, the telescopic extension tube 5, and the suction port 6 connected to the cleaner body 2 communicate with the negative pressure generation source. Dust falling on the floor or the like due to the negative pressure generated at the negative pressure generating source is sucked from the suction port body 6, and passes through the expansion / contraction extension pipe 5, the hand pipe 4 and the extension hose 3, and the inside of the vacuum cleaner body 2. Accumulated in the dust collector. By opening the upper lid 2a that can be opened and closed, the dust collector is removed from the cleaner body 2 and the dust accumulated in the dust collector can be discarded.

  The telescopic extension tube 5 includes a first tube body 10 and a second tube body 20. The first tubular body 10 and the second tubular body 20 are made of, for example, resin and are formed in a substantially straight pipe shape. Each of the first tube body 10 and the second tube body 20 has an extendable structure, and the tube length, which is the length in the extending direction of the tube body, can be changed. That is, the first tube body 10 and the second tube body 20 are formed so that the tube length can be freely extended and contracted. The first tubular body 10 is detachably connected to the suction port body 6. The second tubular body 20 is detachably connected to the first tubular body 10. The hand tube 4 is detachably connected to the second tube body 20.

  FIG. 2 is a schematic cross-sectional view showing a structure in a state where the first tubular body is extended. As shown in FIG. 2, the first tubular body 10 includes a straight tubular tip pipe 11 as a first member and a straight tubular connection pipe 16 as a second member. A brush attachment portion 14 is formed at a distal end portion 11a that is an end portion of the distal end pipe 11 that is connected to the suction port body 6, and a gap brush 15 as a flexible member is provided around the brush attachment portion 14. Is attached.

  At a position close to the distal end portion 11 a of the distal end pipe 11, a stop portion 12 in which the distal end pipe 11 protrudes on the outer peripheral side in the radial direction is formed. When the first tubular body 10 is contracted, the stopper 12 is brought into contact with the tip 16a of the connection pipe 16 and stops the movement of the connection pipe 16. An engaging recess 13 a is formed at a position closer to the rear end portion 11 b of the front end pipe 11 than the stop portion 12, and the outer peripheral side of the front end pipe 11 is recessed. When the first tubular body 10 is contracted, the engagement recess 13 a engages with a locking piece 17 a at the tip of the expansion / contraction button 17 provided on the connection pipe 16.

  An engagement recess 19 is formed in the distal end pipe 11 at a position closer to the distal end portion 11 a than the stopper portion 12, and the outer peripheral side of the distal end pipe 11 is recessed. The engaging recess 19 engages with a locking piece 65a at the tip of a detachable button 65 provided on the suction port body 6 to be described later when the suction port body 6 and the first tube body 10 are connected. Further, an engagement recess 18 in which the outer peripheral side of the connection pipe 16 is recessed is formed at a position close to the rear end portion 16 b of the connection pipe 16. When the first tubular body 10 and the second tubular body 20 are connected, the engaging recess 18 engages with a locking piece 22a at the tip of a detachable button 22 provided on the second tubular body 20 described later. .

  An engaging recess 13b in which the outer peripheral side of the tip pipe 11 is recessed is formed at a position close to the rear end portion 11b of the tip pipe 11. In a state where the first tubular body 10 shown in FIG. 2 is extended, the locking piece 17a of the expansion / contraction button 17 of the connection pipe 16 is engaged with the engagement recess 13b. In a state where the first tubular body 10 is extended, a part of the rear end portion 11 b side of the front end pipe 11 is inserted from the front end portion 16 a side of the connection pipe 16 into the connection pipe 16. At this time, the rear end portion 11 b of the front end pipe 11 is accommodated in the connection pipe 16.

  FIG. 3 is a schematic cross-sectional view showing a structure in a state where the first tubular body is contracted. As shown in FIG. 3, the distal end portion 16 a of the connection pipe 16 is abutted against the stop portion 12 in a state where the first tubular body 10 is contracted. The locking piece 17 a of the expansion / contraction button 17 of the connection pipe 16 is engaged with the engagement recess 13 a on the distal end portion 11 a side of the distal end pipe 11. In this way, by engaging the locking piece 17a with the engaging recesses 13a and 13b, the first tubular body 10 has a structure in which the tube length can be adjusted freely.

  In the state where the first tubular body 10 shown in FIG. 3 is contracted, the tip pipe 11 penetrates the inside of the connection pipe 16. The connection pipe 16 is formed so that the tip pipe 11 can penetrate the inside when the first tubular body 10 is contracted. In the cross-sectional view shown in FIG. 3, the front end portion 16 a and the rear end portion 16 b of the connection pipe 16 are located between the front end portion 11 a and the rear end portion 11 b of the front end pipe 11.

  The inner diameter of the connection pipe 16 is larger than the outer diameter of the tip pipe 11 on the rear end part 11 b side than the stopper part 12. Therefore, the portion of the tip pipe 11 closer to the rear end portion 11b than the stopper portion 12 can move in the pipe longitudinal direction inside the connection pipe 16, and the rear end portion of the tip pipe 11 as shown in FIG. 11 b has a structure that can protrude from the rear end portion 16 b of the connection pipe 16. In addition, the outer diameter of the tip pipe 11 at the stop portion 12 is larger than the inner diameter of the connection pipe 16 at the tip portion 16a. Therefore, the movement of the connection pipe 16 toward the distal end portion 11 a side of the distal end pipe 11 is stopped by the stop portion 12.

  FIG. 4 is a schematic cross-sectional view showing a structure in a state in which the second tubular body is extended. As shown in FIG. 4, the second tubular body 20 includes a straight tubular inner pipe 21 and a straight tubular outer pipe 26. The inner diameter of the inner pipe 21 on the front end portion 21a side is formed larger than the outer diameter on the rear end portion 16b side of the connection pipe 16 of the first tubular body 10, and the connection pipe 16 is connected to the inner pipe 21 from the front end portion 21a. It can be inserted inside. A detachable button 22 is provided at a position close to the distal end portion 21 a of the inner pipe 21. When the first tubular body 10 and the second tubular body 20 are connected, the locking piece 22a at the tip of the detachable button 22 engages with the engaging recess 18 of the connection pipe 16, and the first tubular body 10 The connection state with the second tubular body 20 is maintained.

  An engagement recess 23 a is formed on the inner pipe 21 on the rear end 21 b side of the inner pipe 21 with respect to the attaching / detaching button 22, and the outer peripheral side of the inner pipe 21 is recessed. When the second tubular body 20 is contracted, the engaging recess 23a engages with a locking piece 27a at the tip of the expansion / contraction button 27 provided on the outer pipe 26.

  At a position close to the rear end portion 26b of the outer pipe 26, a stop portion 29 is formed in which the outer pipe 26 protrudes toward the outer peripheral side in the radial direction. When the second tubular body 20 and the proximal pipe 4 are connected, the stopper portion 29 is abutted against a distal end portion 41a of the proximal pipe 41, which will be described later, and the proximal pipe 4 along the longitudinal direction of the second tubular body 20. Stop moving. Further, an engagement recess 28 in which the outer peripheral side of the outer pipe 26 is recessed is formed at a position close to the rear end portion 26 b of the outer pipe 26. When the second tubular body 20 and the proximal tube 4 are connected, the engaging recess 28 engages with a locking piece 46a at the tip of the attaching / detaching button 46 provided on the proximal tube 4 described later.

  An engaging recess 23b in which the outer peripheral side of the inner pipe 21 is recessed is formed at a position close to the rear end 21b of the inner pipe 21. An expansion / contraction button 27 is provided at a position close to the distal end portion 26 a of the outer pipe 26. In the state where the second tubular body 20 is extended, the locking piece 27 a at the tip of the expansion / contraction button 27 engages with the engagement recess 23 b on the rear end 21 b side of the inner pipe 21. In a state where the second pipe body 20 is extended, a part of the rear end portion 21b side of the inner pipe 21 is inserted from the front end portion 26a side of the outer pipe 26 into the outer pipe 26, and the rear end portion 21b of the inner pipe 21 is inserted. Is housed inside the outer pipe 26.

  FIG. 5 is a schematic cross-sectional view showing a structure in a state where the second tubular body is contracted. As shown in FIG. 5, in a state where the second tubular body 20 is contracted, the distal end portion 26a of the outer pipe 26 is in close proximity to the end portion on the rear end portion 21b side of the case portion in which the detachable button 22 is housed. is doing. The locking piece 27 a of the expansion / contraction button 27 of the outer pipe 26 is engaged with the engaging recess 23 a on the distal end 21 a side of the inner pipe 21. In this way, by engaging the locking piece 27a with the engaging recesses 23a and 23b, the second tubular body 20 has a structure in which the tube length can be adjusted freely.

  Compared to FIG. 4, the inner pipe 21 is inserted deeper into the outer pipe 26 in a state where the second tubular body 20 shown in FIG. 5 is contracted. In the cross-sectional view shown in FIG. 5, the inner pipe 21 does not penetrate the outer pipe 26, and the rear end portion 21 b of the inner pipe 21 is located between the front end portion 26 a and the rear end portion 26 b of the outer pipe 26. It arrange | positions so that it may come closer to the edge part 26b.

  The inner diameter of the outer pipe 26 on the front end portion 26 a side is larger than the outer diameter on the rear end portion 21 b side of the inner pipe 21. Therefore, the inner pipe 21 can move inside the pipe of the outer pipe 26 in the longitudinal direction of the pipe. When the second pipe 20 shown in FIG. 5 is contracted, more than half of the pipe length of the inner pipe 21 is the outer pipe. 26 is configured to be accommodated in the interior. The outer pipe 26 has a reduced diameter in the vicinity of the rear end portion 26b. Since the inner diameter of the rear end portion 26 b of the outer pipe 26 is smaller than the outer diameter of the rear end portion 21 b of the inner pipe 21, the inner pipe 21 does not protrude from the rear end portion 26 b of the outer pipe 26. The shape of the outer peripheral surface in the vicinity of the rear end portion 26 b of the outer pipe 26 is the same as the shape of the outer peripheral surface in the vicinity of the rear end portion 16 b of the connection pipe 16 of the first tubular body 10.

  FIG. 6 is a schematic cross-sectional view showing the structure of the proximal tube. As shown in FIG. 6, the hand tube 4 includes a hand pipe 41 and a universal pipe 42. The hand pipe 41 and the universal pipe 42 are provided inside the hand pipe cover 43. The hand pipe 41 is connected to the second pipe body 20, and the universal pipe 42 is connected to the extension hose 3 shown in FIG.

  The hand tube 4 also has a handle portion 44. The handle portion 44 is formed so that the proximal tube 4 protrudes to the side connected to the extension hose 3 shown in FIG. When cleaning is performed using this electric vacuum cleaner, the suction pipe body 6 connected to the proximal pipe 4 through the extension / contraction extension pipe 5 is freely held by gripping the proximal pipe 4 at the handle portion 44. It is possible to move. On the upper surface side of the handle portion 44, a hand operating portion 45 for operating start / stop of the vacuum cleaner and increase / decrease of the suction air volume is provided.

  An attachment / detachment button 46 is provided at a position close to the distal end portion 41 a of the hand pipe 41. When the second tubular body 20 and the proximal pipe 4 are connected, the engaging piece 46a at the tip of the attaching / detaching button 46 is engaged with the engaging recess 28 of the outer pipe 26 of the second tubular body 20, It is set as the structure which can hold | maintain the connection state of the two-tube body 20 and the proximal pipe 4. FIG.

  FIG. 7 is a schematic cross-sectional view showing the structure of the suction port body. As shown in FIG. 7, the suction port body 6 includes a housing 61 having a dust suction opening on the lower surface, a drive pipe 62 connected to the rear portion of the housing 61 and capable of adjusting an angle with respect to the floor surface, A suction pipe 63 provided at the rear of the pipe 62; The upper part of the suction pipe 63 is covered with a pipe cover 64. The dust suction opening formed in the housing 61 and the first tubular body 10 are communicated with each other with the drive pipe 62 and the suction pipe 63 interposed.

  An attachment / detachment button 65 is provided at a position close to the rear end portion 66 of the suction port body 6. When the suction port body 6 and the first tubular body 10 are connected, the engaging piece 65a at the distal end of the detachable button 65 is engaged with the engaging recess 19 of the distal end pipe 11 of the first tubular body 10, It is set as the structure which can hold | maintain the connection state of the suction inlet body 6 and the 1st pipe body 10. FIG.

  Hereinafter, the connection structure of the hand tube 4, the expansion / contraction extension tube 5, and the suction port body 6 will be described. FIG. 8 is a schematic cross-sectional view showing a structure in which the proximal pipe and the suction port body are connected in a state where the extension / contraction extension pipe is extended. As shown in FIG. 8, the front end pipe 11 of the first pipe body 10 can be connected to the suction port body 6, and the front end portion 11 a of the front end pipe 11 extends from the rear end portion 66 to the inside of the suction port body 6. Inserted. And the brush attachment part 14 (refer FIG. 2) of the front-end | tip pipe 11 is fitted by the rear end of the suction pipe 63 (refer FIG. 7) inside the suction inlet body 6, and the locking piece 65a ( 7) engages with the engagement recess 19 (see FIG. 2), and connects the suction port body 6 and the first tubular body 10.

  The rear end portion 16 b of the connection pipe 16 of the first tubular body 10 is inserted into the second tubular body 20 from the distal end portion 21 a of the inner pipe 21. Then, the locking piece 22a (see FIG. 4) at the tip of the detachable button 22 is engaged with the engaging recess 18 (see FIG. 2), and the first tubular body 10 and the second tubular body 20 are connected. Yes.

  The rear end portion 26 b of the outer pipe 26 of the second tubular body 20 is inserted into the proximal tube 4 from the distal end portion 41 a of the proximal pipe 41. Then, a locking piece 46a (see FIG. 6) at the tip of the attaching / detaching button 46 is engaged with the engaging recess 28 (see FIG. 4) to connect the second tubular body 20 and the proximal tube 4 together.

  FIG. 9 is a schematic cross-sectional view showing a structure in which the proximal tube and the suction port body are connected in a state where the expansion / contraction extension tube is contracted. FIG. 10 is a schematic cross-sectional view showing a structure in which the first tube body in a contracted state is connected to the suction port body. FIG. 11 is a schematic cross-sectional view showing a structure in which the second tube body in a contracted state is connected to the proximal tube.

  As shown in FIG. 10, in the state where the first tubular body 10 is contracted, the rear end portion 11 b side of the front end pipe 11 of the first tubular body 10 penetrates the connection pipe 16 and the rear end portion 16 b of the connection pipe 16. Protruding from. When connecting the contracted first tubular body 10 to the contracted second tubular body 20 shown in FIG. 11, the rear end portion 11 b of the distal end pipe 11 is connected to the distal end of the inner pipe 21 of the second tubular body 20. It is inserted into the inner pipe 21 from the portion 21a. Then, the engaging piece 22a at the tip of the attaching / detaching button 22 is engaged with the engaging recess 18, whereby the first tubular body 10 is connected to the second tubular body 20, and the connection structure shown in FIG. 9 is obtained.

  In addition to the above procedure, the first tubular body 10 and the second tubular body 20 can be contracted from the state where the first tubular body 10 and the second tubular body 20 shown in FIG. Can be obtained. When the first pipe body 10 connected to the second pipe body 20 is shrunk, the rear end portion 11b of the front pipe 11 of the first pipe body 10 is located inside the inner pipe 21 of the second pipe body 20 in the same manner as described above. Inserted into. The first tubular body 10 can be contracted after the stretched first tubular body 10 is connected to the second tubular body 20, and can also be coupled to the second tubular body 20 after the first tubular body 10 is contracted. Is possible.

  As shown in FIG. 11, the outer diameter of the inner pipe 21 is narrowed while ensuring the inner diameter in which the distal end pipe 11 can be inserted on the rear end portion 21b side of the case portion in which the attaching / detaching button 22 is housed. It is formed in the shape which is made. The outer diameter of the second tubular body 20 is not larger than the outer diameter of the first tubular body 10, and the maximum outer diameter portion of the first tubular body 10 and the second tubular body 20 as shown in FIG. The diameters are approximately equal. Since the 2nd pipe body 20 is such a shape, the enlargement of the whole expansion-contraction extension pipe | tube and the accompanying increase in the weight which were the subject in the conventional expansion-contraction extension pipe | tube are suppressed.

  In addition, when the first tube body 10 and the second tube body 20 are expanded and contracted with the expansion / contraction extension tube 5 shown in FIG. 9 contracted, the expansion / contraction buttons 17 and 27, the suction port body 6, and the first tube The attaching / detaching buttons 22, 46, 65 pressed when attaching / detaching the body 10, the second tubular body 20, and the hand tube 4 are all outside the tube and exposed to the outside. Therefore, the first tube 10 and the second tube 20 can be easily expanded and contracted, and the tubes can be easily attached and detached.

  Next, as a modified example of the connection structure of the proximal tube 4, the expansion / contraction extension tube 5 and the suction port body 6, a structure in which the first tubular body 10 is directly coupled to the proximal tube 4 without using the second tubular body 20 will be described. . FIG. 12 is a schematic cross-sectional view showing a structure in which the proximal pipe and the suction port body are directly connected with the first tubular body extended. FIG. 13 is a schematic cross-sectional view showing a structure in which the stretched first tubular body and the proximal tube are directly connected.

  As already described, the shape of the outer peripheral surface in the vicinity of the rear end portion 26b of the outer pipe 26 of the second tubular body 20 and the shape of the outer peripheral surface in the vicinity of the rear end portion 16b of the connection pipe 16 of the first tubular body 10 are as follows. Are formed in the same shape. The connecting pipe 16 and the outer pipe 26 have the same inner and outer diameters at the rear end portions 16b and 26b, and the engaging recesses 18 and 28 are formed in the same shape and in the same phase. Therefore, the first tubular body 10 can be directly connected to the proximal tube 4. That is, the rear end portion 16b of the connection pipe 16 of the first tubular body 10 is inserted into the proximal tube 4 from the distal end portion 41a of the proximal pipe 41, and the engaging piece 46a at the distal end of the detachable button 46 is engaged with the engaging recess. 18 (see FIG. 2) is engaged to connect the first tube 10 and the proximal tube 4 together.

  In FIG. 13, the state which removed the suction inlet body 6 from the connection structure shown in FIG. 12 is shown. Since the suction port body 6 is removed, the gap brush 15 attached to the tip pipe 11 of the first pipe body 10 is exposed. The distance from the handle portion 44 of the hand tube 4 to the gap brush 15 is second compared to the case where the first tube body 10 and the hand tube 4 are connected via the second tube body 20 shown in FIG. The length is reduced by the length of the tube 20. When cleaning around the hand, the telescopic extension tube 5 with the gap brush 15 attached to the tip is reduced in size and weight, and it is easy to handle the vacuum cleaner. This improves the usability of the vacuum cleaner.

  FIG. 14 is a schematic cross-sectional view showing a structure in which the proximal pipe and the suction port body are directly connected in a state where the first tubular body is contracted. FIG. 15 is a schematic cross-sectional view showing a structure in which the first tube body in a contracted state and the proximal tube are directly connected. 14 and 15 show a state in which the first tubular body 10 is contracted from the connection structure shown in FIGS. 12 and 13. When the first pipe body 10 directly connected to the proximal pipe 4 is shrunk, the rear end portion 11b of the tip pipe 11 is inserted into the proximal pipe 4 until it penetrates the proximal pipe 41 and reaches the universal pipe 42. ing.

  In FIG. 15, compared to FIG. 13, the distance from the handle portion 44 of the proximal tube 4 to the gap brush 15 is further reduced by the amount of contraction of the first tubular body 10. Therefore, dust can be sucked and removed from the surface to be cleaned closer to the handle portion 44, so that the cleaner can be more easily handled, for example, when cleaning a tabletop, and the usability of the cleaner can be further improved. .

  When the suction port body 6 is removed and cleaned, the gap brush 15 contacts a surface to be cleaned, which is a surface to be cleaned such as a floor surface or a wall surface. The gap brush 15 slides on the surface to be cleaned. At this time, if the bristle material of the gap brush 15 has flexibility and can be easily deformed, the tip of the expansion / contraction extension tube 5 is prevented from colliding with the surface to be cleaned and damaging the surface to be cleaned. Can do.

  In order to suppress damage to the surface to be cleaned, any member having flexibility and a property that does not plastically deform even when bent, such as an elastic member typified by rubber, can be used in place of the gap brush 15. However, when the surface to be cleaned is a surface that needs to be scraped, such as a carpet, it acts to scrape dust when the bristle material slides on the surface to be cleaned. Therefore, in order to increase the cleaning efficiency, it is more advantageous to use a brush having a bristle material as the flexible member.

  As described above, the vacuum cleaner 1 according to the present embodiment includes the suction port body 6, the expansion / contraction extension pipe 5, and the hand pipe 4. The expansion / contraction extension pipe 5 includes a first expandable / contractible pipe 10 that is detachably connected to the suction port 6 and a second extendable / contractible pipe 20 that is detachably connected to the first pipe 10. . The hand tube 4 is detachably connected to the second tube body 20.

  If it does in this way, the expansion-contraction extension pipe | tube 5 can be adjusted to short pipe | tube length by shrinking both the 1st pipe body 10 and the 2nd pipe body 20 which can be expanded-contracted. As a result, the length of the expansion / contraction extension pipe 5 can be shortened when cleaning and storing around the hand, and the usability of the electric vacuum cleaner 1 is improved. Moreover, since both the 1st pipe body 10 and the 2nd pipe body 20 are provided so that attachment or detachment is possible, it removes both the 1st pipe body 10 and the 2nd pipe body 20, and is separate from the cleaner body 2. Can be stored in a smaller space.

  The first tubular body 10 includes a straight tubular tip pipe 11 connectable to the suction port body 6 and a straight tubular connection pipe 16 through which the distal pipe 11 can penetrate. When the first tubular body 10 connected to the second tubular body 20 is contracted, the rear end portion 11 b of the distal end pipe 11 is inserted into the second tubular body 20. In this way, the tube length of the expansion / contraction extension tube 5 when the first tube body 10 and the second tube body 20 are connected and the first tube body 10 is contracted can be further shortened. It is possible to store a vacuum cleaner.

  The first tubular body 10 can be directly connected to the proximal tube 4. In this way, since the tube length of the first tubular body 10 can be made the tube length of the expansion / contraction extension tube 5, the tube length of the expansion / contraction extension tube 5 can be adjusted more finely.

  When the first pipe body 10 directly connected to the proximal tube 4 is contracted, the rear end portion 11 b of the distal end pipe 11 is inserted into the proximal tube 4. In this way, the tube length of the first tubular body 10 directly connected to the proximal tube 4 can be adjusted to be shorter, so that the tube length of the extendable extension tube 5 can be adjusted more finely.

  A clearance brush 15 is provided at the distal end portion 11 a of the distal end pipe 11 of the first tubular body 10 on the side connected to the suction port body 6. The bristle material of the gap brush 15 is formed of a flexible material. In this way, since the first tubular body 10 and the second tubular body 20 can be expanded and contracted, the distance between the proximal tube 4 and the gap brush 15 gripped when cleaning is finely adjusted. be able to. Therefore, not only on the floor but also in various cleanings such as a tabletop and a ceiling, it is possible to efficiently clean using the extension / contraction extension pipe 5 adjusted to an optimum pipe length. If the first tubular body 10 can be directly connected to the proximal tube 4, the length of the expansion / contraction extension tube 5 can be adjusted more finely, so that the cleaning can be performed more efficiently.

  In the description so far, the example in which the gap brush 15 is provided at the distal end portion 11 a of the distal end pipe 11 of the first tubular body 10 has been described. However, the clearance pipe 15 is the inner pipe 21 of the second tubular body 20. It may be attachable to the distal end portion 21 a of the proximal pipe 41 and the distal end portion 41 a of the proximal pipe 41 of the proximal tube 4. If the clearance brush 15 can be attached to the tip portions 21a, 41a, etc., the distance between the clearance brush 15 and the handle portion 44 of the hand tube 4 can be adjusted more finely, so that cleaning is performed more efficiently. Can do.

  Further, two engagement recesses 13a and 13b are formed in the tip pipe 11 of the first tubular body 10, and two engagement recesses 23a and 23b are formed in the inner pipe 21 of the second tubular body 20. However, a larger number of engaging recesses may be formed. The greater the number of engaging recesses, the finer the tube length of the telescopic extension tube 5 can be adjusted. Therefore, the expansion / contraction extension pipe 5 can be adjusted to an optimum pipe length in various cleaning situations, and cleaning can be performed more efficiently.

  Further, the first pipe body 10 and the second pipe body 20 are configured such that the pipe on the suction port body 6 side (that is, the tip pipe 11 and the inner pipe 21) is the pipe on the hand pipe 4 side (that is, the connection pipe 16 and the outer pipe 26). However, the structure is not limited to this. That is, the first tubular body and the second tubular body may have a structure that can be expanded and contracted by inserting a tube on the proximal tube side into a tube on the suction port body side. Furthermore, also about the connection structure between the suction port body and the first tubular body, the first tubular body and the second tubular body, and the second tubular body and the proximal tube, the diameter of the connecting portion of the two tubular bodies to be coupled As long as one of the tip and rear ends of the tube can be inserted into the other, either the tube on the hand tube side or the tube on the suction port side has a larger diameter. It may be formed.

  The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a schematic perspective view which shows the vacuum cleaner in embodiment of this invention. It is a cross-sectional schematic diagram which shows the structure of the state which extended the 1st pipe body. It is a cross-sectional schematic diagram which shows the structure of the state which shrunk the 1st pipe body. It is a cross-sectional schematic diagram which shows the structure of the state which extended the 2nd pipe body. It is a cross-sectional schematic diagram which shows the structure of the state which shrunk the 2nd pipe body. It is a cross-sectional schematic diagram which shows the structure of a hand tube. It is a cross-sectional schematic diagram which shows the structure of a suction inlet. It is a cross-sectional schematic diagram which shows the structure which connected the hand pipe | tube and the suction inlet body in the state which extended the expansion-contraction extension pipe | tube. It is a cross-sectional schematic diagram which shows the structure which connected the hand pipe | tube and the suction inlet body in the state which shortened the expansion-contraction extension pipe | tube. It is a cross-sectional schematic diagram which shows the structure which connected the 1st pipe body of the shrunk state with the suction inlet. It is a cross-sectional schematic diagram which shows the structure which connected the 2nd pipe body of the shrunk state with a proximal pipe. It is a cross-sectional schematic diagram which shows the structure which connected the hand pipe | tube and the suction inlet body in the state which extended the 1st pipe body. It is a cross-sectional schematic diagram which shows the structure which connected the 1st pipe body and the hand pipe | tube of the extended state directly. It is a cross-sectional schematic diagram which shows the structure which connected the hand pipe | tube and the suction inlet directly in the state which shrunk the 1st pipe body. It is a cross-sectional schematic diagram which shows the structure which connected the 1st pipe body and the proximal pipe of the state which was shrunk directly.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner, 2 Vacuum cleaner main body, 2a Main body upper cover, 3 Extension hose, 4 Hand pipe, 5 Expansion / contraction extension pipe, 6 Suction port body, 10 1st pipe body, 11 Tip pipe, 11a, 16a, 21a, 26a, 41a tip part, 11b, 16b, 21b, 26b, 66 rear end part, 12, 29 stop part, 13a, 13b, 18, 19, 23a, 23b, 28 engaging recess, 14 brush mounting part, 15 gap brush, 16 Connection pipe, 17, 27 Expansion / contraction button, 17a, 22a, 27a, 46a, 65a Locking piece, 20 Second tube, 21 Inner pipe, 22, 46, 65 Detachable button, 26 Outer pipe, 41 Hand pipe , 42 Swivel pipe, 43 Hand pipe cover, 44 Handle part, 45 Hand operation part, 61 Housing, 62 Drive pipe, 63 Suction pipe, 64 Pipe cover

Claims (5)

A suction port,
A first tubular body that is detachably connected to the suction port body;
A telescopic second tubular body detachably coupled to the first tubular body;
A vacuum cleaner comprising: a proximal tube detachably connected to the second tubular body. The first tubular body includes a straight tubular first member connectable to the suction port body, and a straight tubular second member through which the first member can penetrate,
The vacuum cleaner according to claim 1, wherein when the first tubular body connected to the second tubular body is contracted, a rear end portion of the first member is inserted into the second tubular body.   The vacuum cleaner according to claim 1 or 2, wherein the first tube body is directly connectable to the proximal tube. The first tubular body includes a straight tubular first member connectable to the suction port body, and a straight tubular second member through which the first member can penetrate,
The vacuum cleaner according to claim 3, wherein when the first tube body directly connected to the proximal tube is contracted, a rear end portion of the first member is inserted into the proximal tube.   The surface to be cleaned is slid on at least one of the tip of the second tube connected to the first tube and the tip of the first tube connected to the suction port. The electric vacuum cleaner according to any one of claims 1 to 4, wherein a flexible member is provided.

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