JP2021121403A - Vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner whose weight can be reduced by reducing the number of parts.SOLUTION: A vacuum cleaner comprises a cleaner body that includes a dust cup unit, and a driving device that includes an attachment part to which the dust cup unit is attached so as to be attachable/removable. The driving device comprises a body part that incorporates an electric air blower, and a suction cylinder part that protrudes frontward from the body part, and comprises a space along the body part and the suction cylinder part as the attachment part. The suction cylinder part comprises a first member that includes a base end part attached to the body part and constitutes the attachment part, a second member that includes a front cylinder part attached on a front end part of the first member so as to suck outside air and introduce it to the dust cup unit, and a weld part that welds and integrates the front end part of the first member and the front cylinder part of the second member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vacuum cleaner.

As a conventional vacuum cleaner, Patent Document 1 proposes a vacuum cleaner that is convenient to carry.
This vacuum cleaner includes a dust cup unit, a drive device having a mounting portion on which the dust cup unit is mounted, and a lock mechanism portion that detachably mounts the dust cup unit on the mounting portion of the drive device. The basic configuration includes a vacuum cleaner body to be held and a battery attached to the vacuum cleaner body from the outside.

In this vacuum cleaner, the drive device has a main body portion containing an electric blower and a suction cylinder portion protruding forward from the main body portion, and also has a space along the main body portion and the suction cylinder portion as the mounting portion. doing.
This vacuum cleaner is configured as a handy type by connecting a suction port or a suction nozzle directly to the suction tube of the drive device, and by connecting the suction port to the suction tube via an extension pipe, the floor surface. It is configured as a stick type to clean.

Japanese Unexamined Patent Publication No. 2015-144785

A vacuum cleaner that can be changed to a handy type or a stick type as described in Patent Document 1 is desired to be lighter because the weight of the vacuum cleaner body and the battery is directly placed on the user's hand when using the vacuum cleaner.
In particular, in the case of a handy type or stick type vacuum cleaner that connects the suction port body with a built-in rotating brush that is rotationally driven by a motor to the vacuum cleaner body directly or via an extension tube, the battery on the vacuum cleaner body side Conductors for supplying electric power to the motor in the suction port are provided inside the suction port, the extension tube, and the drive device.

When a conductor is provided in the suction cylinder portion of the drive device, a flow path through which air containing dust is passed is composed of a cylinder member, and a cover member is attached to the outer surface of the cylinder member, and between the cover member and the cylinder member. A conductor is passed through the space. At this time, the cover member is usually fixed to the tubular member with a plurality of screws. Therefore, the number of parts of the vacuum cleaner body increases and the weight increases.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a vacuum cleaner capable of reducing the weight by reducing the number of parts.

The vacuum cleaner according to one aspect includes a suction cylinder portion having an opening at the front end portion, a dust cup unit having a cylindrical dust collecting container for collecting dust, a driving device incorporating an electric blower, and the above-mentioned driving. Equipped with a vacuum cleaner body that has a battery that can be detachably attached to the device,
The dust cup unit is arranged on the front side of the vacuum cleaner main body and below the suction cylinder portion so that the longitudinal direction of the dust collection container is substantially parallel to the suction cylinder portion.
In the drive device, a handle is formed by an opening provided on the rear side of the dust cup unit for passing a hand.
The handle is formed to include a position on the rear side of the electric blower and intersecting the center line of the electric blower along the front-rear direction.
On the center line, the distance between the rear end of the cover accommodating the electric blower in the driving device and the handle is shorter than the dimension in the front-rear direction of the cover, and the battery is the handle and the electric blower. It is characterized in that it is arranged below the electric blower so as not to be located between the front and rear directions.

According to the vacuum cleaner of the present invention, the suction cylinder portion of the drive device has a welded portion that welds and integrates the front end portion of the first member and the front cylinder portion of the second member, and therefore, as compared with the screwed structure. , The number of parts can be reduced and the weight can be reduced, and the strength of the suction cylinder can be increased.

It is a left side view which shows the vacuum cleaner in Embodiment 1 of this invention. It is a perspective view which shows the vacuum cleaner main body in the electric vacuum cleaner of Embodiment 1. FIG. It is a left side sectional view which shows the internal structure of the operation part provided with the handle of the vacuum cleaner main body of FIG. It is a left side sectional view which shows the internal structure of the vacuum cleaner main body of FIG. It is a perspective view which shows the state which disassembled the housing in the drive device of the vacuum cleaner main body of FIG. It is the electric vacuum cleaner of Embodiment 1, (A) is the state which put it on the floor surface, (B) is the figure which shows the state which lay down on the floor surface. It is an exploded view of the drive device in the vacuum cleaner of Embodiment 1. FIG. (A) is a left side view of the drive device, and (B) is a left side view of the vacuum cleaner main body. (A) is a cross-sectional view taken along the line I-I in FIG. A (A), and FIG. A (B) is a cross-sectional view taken along the line I-I in FIG. A (B). The dust cup in the vacuum cleaner of the first embodiment, (A) is a perspective view, and (B) is an exploded view. The dust cup in the vacuum cleaner of the first embodiment, (A) is a front view, (B) is a cross-sectional view taken along the line II of (A), and (C) is a view taken along the line II-II of (A). A cross-sectional view is shown. It is a dust cup unit, (A) is a plan sectional view of the lower part, and (B) is a side sectional view. The extension pipe in the vacuum cleaner of the first embodiment, (A) is a front view, (B) is a side view, and (C) is a cross-sectional view taken along the line II of (A). It is an exploded view of the extension tube of FIG. 13A. It is explanatory drawing which shows the internal structure seen from the front side of the 1st and 2nd connection pipe part in the extension pipe of FIG. 13A. It is a cross-sectional view of the pipe body in the extension pipe of FIG. 13A. It is a figure explaining the laminated structure of the tube main body in the extension tube of FIG. 13A. 13 (A) is a conductive unit in the extension tube, (A) is a front view, (B) is a side view, and (C) is a rear view. It is an exploded view of the conductive unit of FIG. 18A. (A) is a cross-sectional view taken along the line I-I of FIG. 18 (A), (B) is a cross-sectional view taken along the line II-II of FIG. 18 (A), and (C) is a cross-sectional view taken along the line II-II of FIG. III is a cross-sectional view taken along the arrow. It is a figure which shows the lead wire in the cover plate in the conductive unit of FIG. 18A. It is sectional drawing of the 1st connection pipe part in the extension pipe of FIG. 13A. It is a bottom view which shows the suction port body in the vacuum cleaner of Embodiment 1. FIG. It is a side view of the suction port body shown in FIG. 23. FIG. 23 is a cross-sectional view taken along the line II of the suction port body shown in FIG. 23. FIG. 23 is a cross-sectional view taken along the line II-II of the suction port body shown in FIG. 23.

(Embodiment 1)
FIG. 1 is a left side view showing a vacuum cleaner according to the first embodiment of the present invention.
The vacuum cleaner 1 of the first embodiment includes a vacuum cleaner main body 10, an extension pipe 20, and a suction port body 40. The extension pipe may be irrelevant to the presence or absence of a structure capable of extending the pipe itself. Compared to the handy type where the suction port is directly attached to the vacuum cleaner body for cleaning, when the suction port is attached to the vacuum cleaner body via an extension pipe for cleaning, the area from the vacuum cleaner body to the suction port is It can be cleaned as a stick type with a long distance.

<About the vacuum cleaner body>
FIG. 2 is a perspective view showing a vacuum cleaner main body in the vacuum cleaner of the first embodiment, and FIG. 3 is a left sectional view showing an internal structure of an operation portion provided on a handle of the vacuum cleaner main body of FIG. Further, FIG. 4 is a left sectional view showing the internal structure of the vacuum cleaner main body of FIG. 2, and FIG. 5 is a perspective view showing a state in which the housing of the drive device of the vacuum cleaner main body of FIG. 2 is disassembled. 6A and 6B are the vacuum cleaners of the first embodiment, in which FIG. 6A shows a state in which the vacuum cleaner is placed on the floor surface, and FIG. 6B shows a state in which the vacuum cleaner lies on the floor surface.
The vacuum cleaner main body 10 includes a drive device 11, a dust cup unit 12 detachably attached to the drive device 11, and a battery 13.

[Drive]
As shown in FIGS. 2, 4 and 5, the drive device 11 includes a main body 11a containing an electric blower 11am, a battery mounting portion 11b connected to the main body 11a, a main body 11a and a battery mounting portion. It has a handle 11c having both ends connected to the 11b, and a suction cylinder portion 11d connected to the joint between the main body 11a and the handle 11c and protruding to the opposite side of the handle 11c.
Hereinafter, in the drive device 11, the suction cylinder portion 11d side is the front, the handle 11c side is the rear, the battery mounting portion 11b side is the lower side, the side opposite to the battery mounting portion 11b is the upper side, and the left side and the handle 11c are facing the front. The right side will be described as the left direction and the right direction.

The main body 11a is formed by a cylindrical housing portion having _{a front opening 11a 1 , and the front opening 11a 1} is provided with grid-like ribs.
Further, a fitting convex portion 11ax is provided on the upper surface of the main body portion 11a, and a hole portion for drawing out the lead wire in the main body portion 11a to the outside is formed on the upper surface of the fitting convex portion 11ax.
Further, in the main body portion 11a, an _{inner collar is provided along the edge of the front opening 11a 1} , and the lower portion of the inner collar is a wide inner collar wide portion 11a ₁₁ .
Further, the inner flange wide portion 11a ₁₁ is engaged with a locking recess 12c ₁₁ and an engaging claw 12b _{23 of the second locking mechanism portion 12b 2} provided in the dust cup unit 12, which will be described later, so as to be engaged and disengaged. A convex portion 11a ₁₂ and an engaging concave portion 11a ₁₃ are provided. The locking convex portion 11a ₁₂ protrudes downward, and the engaging concave portion 11a ₁₃ opens forward.

The battery mounting portion 11b has a recess that is open downward and rearward and is provided with a terminal portion that can be electrically connected to the terminal portion of the battery 13 at the back, and the battery 13 is inserted into the recess from the rear. The battery 13 can be pulled out rearward and removed from the recess. The left and right inner side surfaces of the concave portion of the battery mounting portion 11b are provided with concave grooves extending in the front-rear direction, and the left and right side surfaces of the battery 13 are provided with convex portions, so that the battery 13 is mounted on the battery mounting portion 11b. At that time, the left and right convex portions are configured to fit while sliding in the left and right concave grooves.
Further, an exhaust port 11bx for discharging the airflow passing through the electric blower 11am to the outside is formed on the right side surface of the housing constituting the battery mounting portion 11b (see FIG. 4).

The handle 11c is formed in a substantially U shape having an upper curved portion 11c ₁ and a lower curved portion 11c _2, and an operating portion 11e is provided on the outside of the _{upper curved portion 11c 1.}
As shown in FIGS. 3 and 4, the operation portion 11e has _{a recess 11e 1} provided in a resin housing constituting _{the upper curved portion 11c 1} of the handle 11c and an elastic attached to the outside of the recess 11e _{1. It has a pad portion 11e 2 made} of a material (rubber, elastomer, etc.) _{and a switch unit 11e 3} provided inside the recess 11e ₁ (inside the housing).

In operation portion 11e, with convex rib 11e ₁₁ in the central portion of the concave portion 11e ₁ are provided, the longitudinal position of the convex rib 11e ₁₁ are formed a pair of U-shaped slit, a pair of U-shaped slit The inner region is a leaf spring portion 11e ₁₂ that can be elastically deformed. Further, a convex portion is provided on the lower surface of the pair of leaf spring portions 11e _12. Further, a locking hole portion into which a pair of front and rear insertion locking pieces 11e _{24 of the pad portion 11e 2} , which will be described later, is inserted is formed at a position in the front and rear positions of the recess 11e _{1 with respect to the pair of U-shaped slits.}

The pad portion 11e ₂ is provided with _{recesses 11e 22} and 11e ₂₃ at front and rear positions _{of the central portion 11e 21} on the upper surface side thereof. Further, on the lower surface side of the pad portion 11e _{2 , convex portions are provided at the corresponding positions of the central portion 11e 21 and} the corresponding positions of the pair of concave portions 11e ₂₂ and 11e ₂₃ , and a pair of convex portions are provided at the front and rear positions of the convex portions. The insertion locking piece 11e ₂₄ is provided. The central portion 11e ₂₁ abuts on the convex rib 11e ₁₁ , and the front and rear recesses 11e ₂₂ and 11e ₂₃ abut on the leaf spring portion 11e _12.

In the switch unit 11e ₃ , the handle 11c has _{a circuit board 11e 31} supported and fixed by a rib structure provided in the _{upper curved portion 11c 1} , and a pair of front and rear switches 11e ₃₂ and 11e provided on the circuit board 11e _{31. Has 33} and.
In the operation unit 11e, the circuit board 11e ₃₁ is configured to enable the following operations. For example, the power is turned on by pressing _{the front switch 11e 32} or the rear switch 11e _33. After that, pressing the previous switch 11e ₃₂ once switches to the strong mode, and pressing it twice switches to the standard mode, and repeats these three times and thereafter. When the switch 11e ₃₃ is pressed while the power is on, the power is turned off.

_{When the user presses the recesses 11e 22} and 11e ₂₃ in front of or behind the _{pad portion 11e 2} during operation by the operation unit 11e, the front or rear switches 11e ₃₂ and 11e ₃₃ are pressed via the leaf spring portion 11e _12. Be pushed. However, even if the user grasps the pad portion 11e ₂ during cleaning, the central portion 11e ₂₁ between the front and rear recesses 11e ₂₂ and 11e ₂₃ of the pad portion 11e ₂ is projected and supported by the _{convex rib 11e 11.} Therefore, the front and rear recesses 11e ₂₂ and 11e ₂₃ are not pushed by the palm, and erroneous operations not intended by the user are suppressed.

As shown in FIG. 5, the suction cylinder portion 11d and the handle 11e are configured by assembling the first, second and third members 11x, 11y and 11z described later.
As shown in FIGS. 4 and 5, the first member 11x is a member extending in the front-rear direction, has a recess at the front end for accommodating the _{lock member 11x 1} and the hook member 11x _{2, and the like, and the main body portion 11a.} having a fitting hole portion 11x ₃ which convex portion 11ax is fitted into the rear end portion.

The lock member 11x ₁ is attached to the first member 11x so as to be swingable around the center of the horizontal axis, and in the assembled state, the front end portion of the lock member 11x is outwardly downward from the hole formed in the first member 11x. It functions as a protruding push button part. Further, the rear end portion of the lock member 11x has _{an engaging recess 22a 31 of} the first connecting pipe portion 22 described later of the extension pipe 20 when the extension pipe 20 is inserted into _{the front opening 11d 1 of the suction cylinder portion 11d.} (see FIG. 9 (a) ~ (C) ) to function as an engagement claw 11x ₁₁ to disengageably engage. In the assembled state, a coil spring is provided between the first member 11x and the second member 11y to urge the front end portion of the lock member 11x downward (outside).

The hook member 11x _{2 is a member that engages and disengages with the locking recess 12a 21} described later of the dust cup unit 12 mounted on the vacuum cleaner main body 10, and is located below the hole formed in the first member 11x. It protrudes to.

Further, the first member 11x has a connection port 11x _{4 connected to the outlet 11y 11} described later of the second member 11y on the left side surface of the intermediate portion in the front-rear direction, and the lower surface side of the rear end portion has a connection port 11x4. The dust cup unit 12 mounted on the vacuum cleaner main body 10 has a concave portion for accommodating _{the first lock mechanism portion 12b 1} described later and a concave portion 11 x _{12 into which the positioning convex portion 12c 21} is fitted.

The second member 11y includes a front tubular portion 11y _{1 that communicates the front opening 11d 1} and the outlet 11y ₁₁ , an intermediate rib structure portion 11y ₂ that is connected to the front tubular portion 11y ₁ , and an intermediate rib structure. _{It has an inner handle constituent part 11y 3} which is connected to the portion 11y ₂ and forms an inner portion of the handle 11c. _{Further, a pair of female terminal portions 11y 12} electrically connected to a pair of lead wires (not shown) drawn from the main body portion 11a are provided at the front end portion on the lower surface side of the front tubular portion 11y ₁ , and an inner handle is provided. _{The switch unit 11e 3} of the operation unit 11e is housed in the curved intermediate portion of the configuration unit 11y _3.

The third member 11z is a member that covers the intermediate rib structure portion 11y ₂ and the inner handle component portion 11y ₃ , and the pad portion 11e ₂ of the operation portion 11e is provided in the intermediate portion portion.
_{Further, a connecting portion 11b 1 for} connecting to the rear end portions of the second and third members 11y and 11z is provided at the rear portion of the battery mounting portion 11b. The connecting portion 11b ₁ includes a fixed protruding portion 11b ₁₁ and a pressing portion 11b ₁₂ oscillatingly provided on the fixed protruding portion 11b ₁₁ . The pressing portion 11b ₁₂ is operated when the battery 13 is removed.

First to third members 11x, 11y, when explaining an example of assembling the 11z, firstly fitting the fitting hole portion 11x ₃ of the first member 11x in the fitting convex portion 11ax of the main body portion 11a.
Then, electrically connecting a pair of lead wires (not shown) drawn out from the main body portion 11a to the pair of female terminal portions 11y ₁₂ of the second member 11y, the pair of female terminal portions 11y ₁₂ second member 11y After attaching to the front end portion of, the second member 11y is superposed on the first member 11x. Thus, the outlet 11y ₁₁ of the second member 11y is connected to the connection port 11x ₄ of the first member 11x, the rear end portion of the second member 11y abuts the anchoring projections 11b ₁₁ of the connecting portion 11b ₁ ..

Then, the superposed first and second members 11x and 11y are set in the ultrasonic welding machine, and the left and right edge edges 11xe of the front end portion of the first member 11x and the left and right edge edges of the front tubular portion 11y ₁ of the second member 11y are set. 11ye is ultrasonically welded. Reference numeral 11w in FIG. 2 indicates a welded portion. By ultrasonically welding a part of the first member 11x and the second member 11y in this way, the connecting structure by the tapping screw becomes unnecessary, so that the number of parts can be reduced and the weight can be reduced. The first and second members 11x and 11y are made of, for example, ABS resin.

Next, after the holding portion 11b _{12 of the connecting portion 11b 1} is swung toward the second member 11y side, the third member 11z is superposed on the second member 11y. _{As a result, the pressing portion 11b 12} is pressed by the rear end portion of the third member 11z.
Then, by connecting the third member 11z and the second member 11y with the tapping screw N, the rear ends of the second and third members 11y and 11z are connected to the connecting portion 11b _1, and the handle 11c and the suction cylinder are connected. Part 11d is formed.

As shown in FIG. 6A, the vacuum cleaner main body 10 has a support member 11f that supports the vacuum cleaner main body 10 so that cleaning can be interrupted and the electric vacuum cleaner 1 can be placed on the floor surface F. Is provided at the front end of the battery mounting portion 11b. As the material of the support member 11f, for example, hard rubber is used.
The support member 11f is formed in a curved shape in which the lower end portion protrudes slightly forward when viewed from the side surface side, and the lower end surface is formed in an arc shape when viewed from the front side.

Since a space is provided below the extension pipe 20 of the vacuum cleaner 1 in the state of FIG. 6A, there is a risk of damage if a force is applied from directly above the extension pipe 20. Therefore, in the present invention, by forming the lower end surface of the support member 11f into an arc shape, when a force is applied from directly above the extension pipe 20, the balance is lost and the support member 11f falls down, resulting in a state of lying down as shown in FIG. 6 (B). Therefore, the extension pipe 20 is prevented from being damaged. When the cleaning is interrupted, the vacuum cleaner 1 may not be placed on the floor surface F, but the support member 11f may be hooked on the top plate of the table or the backrest of the chair and placed so as to lean the vacuum cleaner 1. can.

7A and 7B are exploded views of the drive device in the vacuum cleaner of the first embodiment, FIG. 8A is a left side view of the drive device, and FIG. 7B is a left side view of the vacuum cleaner main body. 9 (A) is a cross-sectional view taken along the line I-I in FIG. A (A), and FIG. 9 (B) is a cross-sectional view taken along the line I-I in FIG. A (B).
Hereinafter, the components of the drive device 11 will be further described with reference to FIGS. 2 to 9.
First, the main body 11a of the drive device 11 includes a pair of left and right electric blower covers 11ac ₁ and 11ac ₂ for accommodating the electric blower 11am.
With the front end portion of the electric blower cover 11ac ₁ left the front opening 11a ₁ of the main body portion 11a is integrally formed, on top of each electric blower cover 11ac _1, 11ac ₂ wherein fitting projection 11ax The half portion 11ax _{1 of the above} is integrally formed. The locking convex portion 11a ₁₂ is attached to the front opening 11a _1.
Further, in the main body 11a, a pair of anti-vibration rubbers 11ac ₃ for fixing the rear end of the electric blower 11am to a pair of left and right electric blower covers 11ac ₁ and 11ac ₂ , and a front end and front of the electric blower 11am. _{A packing 11ac 4} arranged between the opening 11a ₁ and the inner surface of the outer peripheral portion is provided.

Next, the battery mounting portion 11b of the drive device 11 includes a pair of left and right battery mounting portions housings 11 bc ₁ and 11 bc ₂ connected to the lower portion of the main body portion 11a with screws (not shown).
The exhaust port 11bx is formed on the side surface of the battery mounting housing 11bc ₂ on the right side, and the support member 11f is formed on the front and rear ends of the _{battery mounting housings 11bc 1} and 11bc _2. A pair of half-split portions 11bc ₃ and a pair of half-split portions _{11 bc 4 of the} fixed projecting portion 11b 11 are integrally formed. When assembling the pair of left and right battery mounting housings 11 bc ₁ and 11 bc ₂ , the holding portion 11b ₁₂ is swingably attached to the pair of half split _{portions 11 bc 4,} and the pair of half split portions after assembly. The support member 11f is mounted on the _{11bc 3 so as to cover it.} At this time, the support member 11f may be made of rubber to cover it. Alternatively, it may be attached with an adhesive.

Further, in the housings 11 bc ₁ and 11 bc _{2 for each battery mounting portion, partition plates 11 bc 5} are continuously provided from the front end portion to the rear end portion thereof, and the left and right side surfaces of the battery 13 are attached to the lower end portions of the side walls thereof. _{A lower end side wall portion 11bc 6} forming a concave groove that slidably supports the convex portion 13b in the front-rear direction is provided in series.
Further, inside the battery mounting portion 11b, there is a circuit board 11bc _{7 having a terminal portion 11bc 8} that can be electrically connected to the terminal portion 13a of the battery 13.

The handle 11c and the suction cylinder portion 11d of the drive device 11 include the first, second and third members 11x, 11y and 11z.
In the first member 11x, an LED substrate 11xs having a plurality of LED lights that are turned on when the vacuum cleaner 1 is operated and when the suction force is strong is provided.
Further, in the first member 11x, a packing 11xp is attached to an outlet (not shown) connected to the _{outlet 11y 11 of the second member 11y, and the lock member 11x 1} and the hook member 11x ₂ are attached to the front end side thereof. ..
_{Further, in the recesses 11x 12} provided behind the outlet of the suction cylinder portion 11d, the filter mounting forgetting prevention member 11x ₅ is rotatably mounted around the axial center Q in the front-rear direction (FIGS. 4 and 9). See (A)). This filter forgetting prevention member 11x ₅ (hereinafter, may be referred to as "mounting forgetting prevention member 11x ₅ ") attempts to mount the dust cup unit 12 in which the filter portion 12c is not incorporated on the main body portion 11a of the drive device 11. It also has a function to prevent it from being attached. The details of this will be described later.

[Dust cup unit]
10A and 10B show a dust cup in the vacuum cleaner of the first embodiment, where FIG. 10A is a perspective view and FIG. 10B is an exploded view. 11A and 11B are dust cups in the vacuum cleaner of the first embodiment, in which FIG. 11A is a front view, FIG. 11B is a cross-sectional view taken along the line II of FIG. A cross-sectional view taken along the line II-II is shown. Further, FIG. 12 is a dust cup unit, (A) is a plan sectional view of a lower portion, and (B) is a side sectional view.

Dust cup unit 12 includes a bottom 12a _1, and the dust collecting container 12a of a cylindrical shape having an outer peripheral portion 12a ₂ and the opening 12a _3, and the cup portion 12b to be fitted into the opening 12a ₃ of the dust container 12a, the cup portion 12b It includes a filter portion 12c that is detachably stored inside, and an inner cylinder portion 12d that is detachably attached to the cup portion 12b so as to be stored in the dust collection container 12a.

《Dust collection container》
Dust container 12a is viewed from the front, the engagement recess 12a ₂₁ together with the provided at the bottom 12a ₁ side of the center line P in the outer peripheral portion 12a _2, the opening 12a ₃ on the center line P in the outer peripheral portion 12a ₂ A locking convex portion 12a ₂₂ is provided on the side. Further, the dust collecting container 12a is provided with _{an introduction port 12a 23} for introducing air containing dust at a position deviated from the center line P on the _{outer peripheral portion 12a 2 when viewed from the front.}

Further, as shown in FIGS. 12A and 12B, the dust collecting container 12a is provided with a _{quadrangular pyramid-shaped convex portion 12a 4 at} a position shifted outward from the central position on _{the bottom portion 12a 1.} The convex portion 12a ₄ prevents the dust accumulated in the lower space inside the dust collecting container 12a ( _{the space between the dust collecting container 12a and the small diameter cylinder portion 12d 21} described later of the inner cylinder portion 12d) from swirling due to the swirling airflow. It has a function to stop at.

《Cup part》
The cup portion 12b has a bottom portion having a central hole and an inverted tapered surface around the center hole, a cylindrical outer peripheral portion connected to the bottom portion, and a first lock mechanism portion 12b ₁ and a second lock mechanism provided on the outer peripheral portion. A portion 12b ₂ , a pair of arcuate grooves 12b ₃ provided around the central hole on the lower surface of the bottom, a packing 12b ₄ provided near the bottom on the outer periphery, and an open end on the outer periphery opposite to the bottom. It has a notch portion 12b ₅ provided in.
Further, the cup portion 12b has a detection convex portion 12b _{6 provided at a lateral position of the notch portion 12b 5 on} the outer peripheral surface. The function of the detection convex portion 12b ₆ will be described in detail later.

The first lock mechanism portion 12b ₁ swings with an inverted U-shaped rib provided on the outer peripheral surface of the cup portion 12b, a swing piece 12b ₁₁ swayably attached to the rib around the horizontal axis, and a swing piece 12b 11. and it provided at the lower end piece 12b ₁₁ engagement claw 12b ₁₂ for engagement projections 12a ₂₂ and detachably locking the dust collecting container 12a, the engaging claws 12b ₁₂ on the locking projections 12a _{22 It has a coil spring 12b 13} for urging in the direction of urging.

The second lock mechanism portion 12b ₂ is provided on a convex rib provided on the outer peripheral surface of the cup portion 12b, a slide member 12b ₂₁ attached to the rib so as to be slidable in the vertical direction, and an upper end portion of the slide member 12b _21. and the engaging claw 12b ₂₂ to the engaging recess 11a ₁₃ disengageably engaging the cleaner body 10 is provided, biases to engage the engaging claw 12b ₂₂ the engagement recess 11a ₁₃ It has a coil spring 12b ₂₃ .
Further, the second locking mechanism portion 12b _{2 includes the locking recess 12c 11} provided in the filter portion 12c, which will be described later, as a component.

《Filter part》
The filter portion 12c has a pleated filter main body 12c _{1 having an annular outer peripheral frame portion, and a packing portion 12c 2} covering the outer peripheral portion of the outer peripheral frame portion of the filter main body 12c ₁ .
_{The locking recess 12c 11} that opens radially inward is provided on the inner peripheral surface of the outer peripheral frame portion of the filter main body 12c ₁ , and the positioning convex portion 12c ₂₁ is provided on _{the outer peripheral surface of the packing portion 12c 2.} ..

The locking recess 12c ₁₁ and the positioning protrusion 12c ₂₁ are arranged at positions substantially opposite to each other.
When the filter portion 12c is fitted into the opening of the cup portion 12b, the positioning convex portion 12c ₂₁ of the filter portion 12c is dropped into the notch portion 12b _{5 of the cup portion 12b for positioning.}
Then, the locking recess 12c ₁₁ of the filter portion 12c is arranged at the position of the second locking mechanism portion 12b _{2 of the cup portion 12b.} Further, the packing portion 12c ₂ is supported in close contact with the step portion provided on the inner peripheral surface of the opening of the cup portion 12b.

《Inner cylinder part》
The inner cylindrical portion 12d has a cylindrical filter unit 12d ₁ removably attached to the cup portion 12b, and the partitioning member 12d ₂ of tubular detachably mounted a cylindrical filter unit 12d _1.
The tubular filter portion 12d _{1 has a tubular frame body 12d 11} having a plurality of slits extending in the axial direction, _{and a mesh member 12d 12} provided on the outer peripheral portion of the tubular frame body 12d ₁₁ .
The tubular frame body 12d ₁₁ is provided at the upper end of the outer peripheral portion thereof, a pair of locking pieces 12d _{111 provided at the upper end of the outer peripheral portion thereof and engageably engaged with the pair of arcuate grooves 12b 3} of the cup portion 12b, and at the lower end of the outer peripheral portion thereof. The partition member 12d ₂ has a pair of arcuate grooves 12d ₂₃₁ described later and a pair of locking pieces 12d ₁₁₂ that engage and disengage with each other.

Partitioning member 12d ₂ includes a small-diameter cylindrical portion 12d _21, a large-diameter cylindrical portion 12d _22, and a flange portion 12d ₂₃ which connects the inner peripheral surface of an upper end of the small diameter cylinder portion 12d ₂₁ large-diameter portion 12d ₂₂ Have.
The flange portion 12d _{23 has a pair of arcuate grooves 12d 231} provided on the upper surface thereof and engaging with a pair of locking _{pieces 12d 112 at} the lower end portion of _{the tubular filter portion 12d 1} .

As shown in FIGS. 12A and 12B, the large-diameter tubular portion 12d ₂₂ has an outer flange 12d ₂₂₁ at its lower end. The outer flange 12d ₂₂₁ is a plan view oval, without even the gap between the outer flange 12d ₂₂₁ and the dust collecting container 12a by an oval, forming a narrow gap S ₁ is wider gap S ₂ do. As a result, the dust collected in the lower part of the dust collecting container 12a is soared by the swirling airflow G, and the decrease in suction force caused _{by the soaring dust adhering to the tubular filter portion 12d 1 of the inner cylinder portion 12d can be suppressed.} ..

More specifically, the bottom portion 12a ₁ of the dust collecting container 12a is provided with the _{convex portion 12a 4} for preventing the dust from turning, but the flange portion 12d _{23 of the partition member 12d 2} to the bottom portion 12a _{1 of the dust collecting container 12a 1} If the outer flange 12d ₂₂₁ is not provided, the dust that hits the _{convex portion 12a 4} may fly up to the tubular filter portion 12d _{1 above the partition member 12d 2} and adhere to it, resulting in a decrease in suction force. be.
In order to solve this problem, an outer flange 12d _{221 is provided at the lower end of the partition member 12d 2} to prevent dust from flying upward.

However, _{if the gap between the outer peripheral surface of the outer flange 12d 221} and the inner peripheral surface of the dust collecting container 12a is too small, the sucked large dust will not enter below the _{outer flange 12d 221.} Therefore, in the present invention, without even a gap, forming the wide gap S ₂ is the dust stirred up conspicuous place striking the convex portion 12a ₄ to form the narrow gap S _1, the portion where the dust is difficult whirled up _{The outer flange 12d 221} is oval so that large dust can fall. In the case of the present embodiment, the major axis D _{1 of the outer flange 12d 221} is set to 61 mm, the minor axis D _{2 is set} to 57 mm, the narrow gap S _{1 is set} to 6 mm, and the wide gap S ₂ is set to 8 mm, but the present invention is limited to these. is not it.
Since the convex portions 12a ₄ are provided at only one location, the narrow gap S ₁ is originally sufficient at one location. In the case of the present embodiment, the partition member 12d ₂ and the tubular filter portion 12d ₁ are detachable and have a structure in which they are locked by an arcuate groove and a locking piece, and this locking structure is the opposite of 180 degrees. Since it has a lock mechanism that can be locked even if it is rotated to the side, _{one narrow gap S 1} is arranged at a position where dust easily rises depending on the locking position of the partition member 12d _{2 with respect to the tubular filter portion 12d 1. The narrow gap S 1} is also provided on the opposite side of 180 degrees because it may not be formed. In other words, as the partitioning member 12d ₂ is also locked on either side of 180 degrees with respect to the cylindrical filter unit 12d _1, the position of the narrow gap S ₁ for the convex portion 12a ₄ are the same, i.e., a pair _{The outer flange 12d 221} is formed in an elliptical shape _{so that one} of the narrow gaps S1 is always in a position where dust can easily fly up.

In the assembled state of the dust cup unit 12, the small diameter cylinder portion 12d _{21 of the partition member 12d 2 is fitted into the positioning cylinder portion 12a 24} provided on the inner bottom surface of the dust collecting container 12a, and is fitted around the positioning cylinder portion 12a _24. It comes into contact with the provided packing 12a _25. In this state, a space for collecting dust lumps is formed in the dust collecting container 12a below the large-diameter tubular portion 12d _{22 of the partition member 12d 2.}

[About attachment / detachment of dust cup unit to drive unit]
As shown in FIG. 9 (A) and (B), it said mounting forgetting prevention member 11x ₅ of the drive unit 11 is provided rotatably suction tube portion 11d in the axial center Q about a longitudinal direction. In the state where the dust cup unit 12 is not mounted on the drive device 11 (FIG. 9 (A)), the forgotten mounting prevention member 11x _{5 includes the first contact portion 11x 51} and the first contact portion 11x 51 protruding downward and outward from the suction cylinder portion 11d. and a second contact portion 11x ₅₂ housed in the suction cylindrical portion 11d.

When mounting the dust cup unit 12 (with the filter portion 12c) on the vacuum cleaner main body 10, first, in a state where the dust cup unit 12 is tilted with respect to the suction cylinder portion 11d, the locking recess 12a _{21 of the dust cup unit 12 is inserted.} hooked on the hook member 11x ₂ of the cleaner body 10. Then, by making the dust cup unit 12 parallel to the suction cylinder portion 11d with _{the hook member 11x 2 as a fulcrum, the locking concave portion 12c 11} of the dust cup unit 12 is fitted with the locking convex portion of the vacuum cleaner body 10. When 11a ₁₂ is locked, the engaging claw 12b ₂₂ of the second locking mechanism portion 12b ₂ of the dust cup unit 12 engages with the engaging recess 11a ₁₃ of the drive device 11, and the mounting is completed.

At this time, as shown in FIG. 9 (A) and (B), the first contact portion in contact with the first contact portion 11x ₅₁ preventing member 11x ₅ positioning protrusion 12c ₂₁ of the filter portion 12c is forgotten mounted 11x ₅₁ will push into the recess 11x ₁₂ a, thereby rotating the preventing member 11x ₅ forgotten mounted, also projects to rotate while lower external second contact portion 11x _52. However, when the first contact portion 11x ₅₁ is pushed all the way into the recess 11x _{12 , the second contact portion 11x 52} is housed in the _{recess 11x 12} again while approaching the attachment forgetting prevention member 11x _5. .. During this time, the detection protrusion 12b ₆ of the dust cup unit 12 is also moved towards the recess 11x _12, the detection protrusion 12b ₆ is accommodated in the recess 11x ₁₂ while avoiding the second contact portion 11x _52.

When removing the dust cup unit 12 from the vacuum cleaner main body 10, the dust cup unit 12 is tilted with respect to the suction cylinder portion 11d _{with the hook member 11x 2} as a fulcrum while the slide member 12b21 of _{the second lock mechanism portion 12b 2 is pushed down.} It can be easily removed by going.

Next, a case where the dust cup unit in which the filter portion 12c is not incorporated in the cup portion 12b is attached to the drive device 11 will be described with reference to FIGS. 9A and 9B.
For example, if the user tries to mount the dust cup unit on the drive device 11 while forgetting to incorporate the filter portion 12c into the cup portion 12b, the positioning convex portion 12c ₂₁ of the filter portion 12c is attached to the mounting forgetting prevention member 11x as described above. _{The first contact portion 11x 51 of 5} was abutted against the first contact portion 11x 51, and the first contact portion 11x ₅₁ could not be pushed into the recess 11x _{12 , and the notch portion 12b 5} of the cup portion 12b (see FIG. 10B) was formed. It approaches the first contact portion 11x _51. Then, the detection convex portion 12b ₆ of the cup portion 12b comes into contact with the second contact portion 11x ₅₂ of the mounting forgetting prevention member 11x ₅ , and tries to push the second contact portion 11x ₅₂ into the concave portion 11x _12.

At this time, the detection convex portion 12b ₆ tries to rotate the second contact portion 11x ₅₂ to the side opposite to the first contact portion 11x ₅₁ side, but the second contact portion 11x ₅₂ constitutes the concave portion 11x _12. It hits the side wall to prevent rotation. As a result, the cup portion 12b cannot approach the suction cylinder portion 11d any more, so that the engaging claw 12b _{22 of the second lock mechanism portion 12b 2} of the dust cup unit engages with the engaging recess 11a ₁₃ of the drive device 11. Therefore, the dust cup unit (without the filter unit 12c) cannot be attached to the drive device 11.

This allows the user to notice that the dust cup unit does not have a built-in filter section. That is, according to the vacuum cleaner of the present invention, the user is made aware that he / she has forgotten to attach the filter to encourage the user to use the correct vacuum cleaner, and the vacuum cleaner is driven without the filter unit to suck in dust. It is possible to prevent a problem that the drive device breaks down.

<About the structure of the extension pipe>
13A and 13B are extension pipes in the vacuum cleaner of the first embodiment, where FIG. 13A is a front view, FIG. 13B is a side view, and FIG. 13C is a cross-sectional view taken along the line II of FIG. Further, FIG. 14 is an exploded view of the extension pipe of FIG. 13 (A), and FIG. 15 is an explanation showing the internal structure of the extension pipe of FIG. 13 (A) as viewed from the front side of the first and second connecting pipe portions. 16A and 16B are cross-sectional views of a pipe body in the extension pipe of FIG. 13A, and FIG. 17 is a diagram illustrating a laminated structure of the pipe body in the extension pipe of FIG. 13A.

The extension pipe 20 includes a circular pipe body 21, a tubular first connection pipe 22 provided at one end of the pipe body 21 and detachably connected to the vacuum cleaner body, and the other end of the pipe body 21. It is provided with a tubular second connecting pipe portion 23 provided in the above and detachably connected to the suction port body, and a conductive unit 24 provided from the first connecting pipe portion 22 to the second connecting pipe portion 23. ..

[Pipe body]
The pipe body 21 is formed by laminating a plurality of tubular carbon fiber layers 21a and has a pipe shape (main body pipe 21). In the case of the first embodiment, the plurality of laminated tubular carbon fiber layers 21a include the first tubular carbon fiber layer 21a ₁ , the second tubular carbon fiber layer 21a _2, and the third tubular carbon fiber layer 21a ₃ from the inside. It is laminated in order. A resin coating layer 21b is laminated as the outermost layer on the outer peripheral surface of the third tubular carbon fiber layer 21a _3. Then, it is processed as dry carbon. Dry carbon is molded in a pressurizing kiln using a pressure-resistant device capable of increasing the internal pressure.

The first tubular carbon fiber layer 21a ₁ is composed of a unidirectional carbon fiber sheet having a plurality of carbon fibers extending in parallel with the longitudinal direction of the pipe.
The second tubular carbon fiber layer 21a ₂ and the third tubular carbon fiber layer 21a ₃ are composed of a bidirectional carbon fiber sheet having a plurality of carbon fiber warp threads and weft threads.
As the unidirectional carbon fiber sheet and the bidirectional carbon fiber sheet, a commercially available prepreg sheet in which resin is impregnated in advance between the carbon fibers can be used. In addition to the warp and weft, the plurality of carbon fibers can be formed in a thread shape crossed in an oblique direction. Further, the crossed ones and the combinations of the warp threads and the weft threads may be freely rearranged.

The tube body 21 can be manufactured by molding and laminating the first to third tubular carbon fiber layers 21a _{1 to 21a 3} layer by layer by a known method using a mold using a commercially available prepreg sheet. .. For example, there is a method of winding around a shaft rod such as a metal rod.
In the case of the first embodiment, a small notch 21n for positioning the connection positions with the first and second connection pipe portions 22 and 23 is cut at the opposite positions of both ends of the pipe body 21 after formation. It is formed.

In the tube body 21, the thickness T ₁ of the first tubular carbon fiber layer 21a ₁ is about 0.1 mm, and the thicknesses T ₂ and T ₃ of the second and first tubular carbon fiber layers 21a ₁ are about 0. It is 3 mm, the thickness T ₄ of the resin coating layer 21b is about 0.1 mm, and the overall thickness T ₅ is about 0.8 mm. The thicknesses of the first to third tubular carbon fiber layers 21a _{1 to 21a 3} are derived from the thicknesses of the unidirectional and bidirectional carbon fiber sheets used at the time of their formation.

Further, each tubular carbon fiber layer 21a has both end portions extending in the longitudinal direction of the pipe, and also has end face contact portions 21ax in which the end faces of both end faces are in contact with each other. The end face contact portion 21ax is a portion where the end faces of both end faces of the one-way and two-way carbon fiber sheets used at the time of forming each tubular carbon fiber layer 21a are fused to each other.
In the tube main body 21, the end face contact portion 21ax of one tubular carbon fiber layer 21a and the end face contact portion 21ax of another tubular carbon fiber layer 21a adjacent to the end face contact portion 21ax are arranged at positions that do not overlap with each other. In the case of the first embodiment, each contact end face portion 21ax is arranged at a position deviated by a center angle of 120 °. By evenly shifting the positions of the contact end face portions 21ax in the circumferential direction in this way, it is possible to make the pipe body uniform without forming a strong or weak portion of rigidity.

Since each tubular carbon fiber layer 21a has an end face contact portion 21ax, each tubular carbon fiber layer 21a is formed as a layer having no step and having a uniform thickness. In other words, when the carbon fiber sheet is simply triple-wound on a metal rod during the manufacture of the tube body, it is between the end of the single-winding and the start of the double-winding, and between the end of the double-winding and the start of the triple-winding. Although step between the parts occurs, for three layers of the first embodiment of the tube body 21 in the first to third cylindrical carbon fiber layer 21a ₁ ～21A ₃ is a separate layer, such a step does not occur .. Therefore, the pipe body 21 is formed with a uniform thickness and has uniform rigidity as a whole.

[1st connection pipe part]
The first connecting pipe portion 22 is a portion connected to the vacuum cleaner main body 10, and has a connecting pipe main body 22a, a small piece 22b, and a (first) cover member 22c.
The connecting pipe main body 22a is a pair of males described later of the conductive unit 24, which are connected to the _{(first) fixing portion 22a 1} which is inserted into one end of the pipe main body 21 and fixed with an adhesive and the fixing portion 22a _1. holding the mold pin portion 24a ₂ (first) terminal holding portion 22a _2, and an insertion portion 22a ₃ which are provided continuously to the terminal holding portion 22a ₂ is inserted into the front opening 11d ₁ of the cleaner body 10 Have.

The fixing portion 22a _{1 has a pair of receiving pieces 22a 11} on the inner peripheral surface that receive one end of the support plate 24b described later of the conductive unit 24, and has a positioning convex that engages with one notch portion 21n of the pipe body 21. The portion 22a ₁₂ is provided at the boundary portion with the _{terminal holding portion 22a 2} on the outer peripheral surface.
The terminal holding portion 22a ₂ has a recess on the positioning convex portion 22a ₁₂ side on the outer peripheral surface thereof, and a pair of male terminal portions 24a ₂ and a lead wire 24a ₁ of the conductive unit 24 are inserted into the recess from the inside to the outside. (First) The drawer port 22a ₂₁ is formed.

Further, in the recess of the terminal holding portion 22a _{2 , a rib structure 22a 22} that holds a pair of male terminal portions 24a ₂ in parallel with each other at predetermined intervals and _{a boss portion 22a 23} into which a tapping screw 22d for attaching the cover member 22c is screwed. And are provided.
The insertion portion 22a ₃ has an engaging recess 22a ₃₁ that engages with the engaging claw 11x _{11 of the lock member 11x 1} of the vacuum cleaner main body 10 so as to be disengaged on the positioning convex portion 22a _{12 side on the outer peripheral surface thereof.}

The small piece 22b is a _{member that covers the outlet 22a 21} of the connecting pipe main body 22a through which the _{pair of lead wires 24a 1} is inserted, and dust in the air passing through the extension pipe 20 when the vacuum cleaner 1 is used is the outlet 22a. It functions so as not to flow _{from 21} to the male terminal portion 24a ₂ side, and also protects the _{male terminal portion 24a 2.
The cover member 22c covers the recess of the terminal holding portion 22a 2} of the connecting pipe main body 22a by screwing the tapping screw 22d into the boss portion 22a ₂₃ , and presses the small piece 22b to fix it to the connecting pipe main body 22a.

[2nd connection pipe part]
The second connecting pipe portion 23 is a portion connected to the suction port body 40, and has a connecting pipe main body 23a, a small piece 23b, a lock member 23c, a coil spring 23d, and a (second) cover member 23e. ..
_{The connecting pipe body 23a is a pair of a (second) fixing portion 23a 1} that is inserted into the other end of the pipe body 21 and fixed with an adhesive, and a pair of conductive units 24 that are connected to the fixing portion 23a _{1 and will be described later.} It has a (second) terminal holding portion 23a ₂ that holds the female terminal portion 24a ₃ .

The fixing portion 23a ₁ has a pair of receiving pieces (not shown) for receiving the other end of the support plate 24b of the conductive unit 24 on the inner peripheral surface, and is positioned to engage with the other notched portion 21n of the pipe body 21. The convex portion 23a ₁₂ is provided at the boundary portion with the _{terminal holding portion 23a 2} on the outer peripheral surface.
The terminal holding portion 23a ₂ has a recess on the positioning convex portion 23a ₁₂ side on the outer peripheral surface thereof, and the pair of female terminal portions 24a ₃ and the lead wire 24a ₁ of the conductive unit 24 are inserted into the recess from the inside to the outside. (Second) The drawer port 23a ₂₁ is formed. Further, in the recess of the terminal holding portion 23a _{2 , a rib structure 23a 22} that holds a pair of female terminal portions 24a ₃ in parallel with each other at predetermined intervals and _{a boss portion 23a 23} into which a tapping screw 22f for attaching the cover member 23e is screwed. And are provided.

The lock member 23c has a shaft portion 23c _{1 , a button portion 23c 2} and a locking claw portion 23c ₃ which are connected so as to sandwich the shaft portion 23c _1, and is mounted in a recess of the terminal holding portion 23a _2. ing. At this time, the shaft portion 23c ₁ is rotatably attached to the rib structure 23a _22. Further, the locking claw portion 23c ₃ can protrude into the connecting pipe main body 23a from a hole formed in the bottom surface of the recess of the connecting pipe main body 23a.
The coil spring 23d is provided in the recess of the connecting pipe main body 23a so as to _{urge the button portion 23c 2 of the lock member 23c to the outside.}

The small piece 23b is a _{member that covers the outlet 23a 21} of the connecting pipe main body 23a through which the _{pair of lead wires 24a 1} is inserted, and dust in the air passing through the extension pipe 20 when the vacuum cleaner 1 is used is the outlet 23a. It functions to prevent the female terminal portion 24a _{3 from flowing from 21} and protects the _{female terminal portion 24a 3.}
The cover member 23e has a hole portion 23e ₁ that _{exposes the button portion 23c 2 of the lock member 23c to the outside. The cover member 23e covers the recess of the terminal holding portion 23a 2} of the connecting pipe main body 23a by screwing the tapping screw 22f into the boss portion 23a ₂₃ , presses the small piece 23b to fix it to the connecting pipe main body 23a, and lock member 23c. I try not to drop out.

[Conductive unit]
18 is a conductive unit in the extension tube of FIG. 13A, FIG. 18A is a front view, FIG. 18B is a side view, and FIG. 18C is a rear view. Further, FIG. 19 is an exploded view of the conductive unit shown in FIG. 18 (A). 20 (A) is a cross-sectional view taken along the line I-I of FIG. 18 (A), FIG. 20 (B) is a cross-sectional view taken along the line II-II of FIG. 18 (A), and FIG. 18 (C) is a cross-sectional view taken along the line II-II. ) III-III cross-sectional view taken along the arrow. 21 is a view showing a lead wire in a cover plate in the conductive unit of FIG. 18A, and FIG. 22 is a cross-sectional view of a first connecting pipe portion in the extension pipe of FIG. 13A. The cross-sectional views of FIGS. 20A and 20C are cross-sectional views at the positions of _{the protruding pieces 24c 2 described later.}

The conductive unit 24 includes a pair of conductive cables 24a and a long and thin hollow plate 24x for accommodating the pair of conductive cables 24a.
The hollow plate 24x includes a support plate 24b and a cover plate 24c that accommodate the pair of conductive cables 24a so as to sandwich them, and these are integrated by ultrasonic welding when the conductive unit 24 is assembled. In addition, you may integrate with an adhesive.
The pair of conductive cables 24a and the support plate 24b have a length longer than the tube body 21, the pair of conductive cables 24a have a length longer than the support plate 24b, and the support plate 24b is longer than the cover plate 24c. Has a length.

Each conductive cable 24a includes a lead wire 24a ₁ coated with an insulating tube, a pin-shaped male terminal portion 24a ₂ electrically connected to both ends of the lead wire 24a ₁ , and a clip-shaped female mold. It has a terminal portion 24a ₃ .
In a state where the extension pipe 20 is connected to the vacuum cleaner main body 10 and the suction port body 40, the male terminal portion 24a ₂ of the extension pipe 20 is inserted into the female terminal portion 11y ₁₂ of the vacuum cleaner main body 10 and electrically connected. , The male terminal portion 42a (see FIG. 23) of the suction port 40, which will be described later, is inserted into the female terminal portion 24a _{3 of the extension pipe 20 and electrically connected.}

The support plate 24b has a base portion 24b _{1 having a concave cross-sectional shape and a pair of hook pieces 24b 2} provided along the upper ends on both side surfaces of the base portion 24b ₁ , and is made of an insulating resin. It is made of (for example, ABS resin).
_{The bottom of the base portion 24b 1} of the support plate 24b that receives the cover plate 24c is flat.

_{The cover plate 24c has a base portion 24c 1} having a substantially m-shaped cross-sectional shape and _{projecting pieces 24c 2} provided on outer surfaces at both ends of the base portion 24c ₁ , and has an insulating resin (for example, ABS). It is made of resin). The pair of projecting pieces 24c _{2 at} both ends serves as a wall that blocks foreign matter such as dust from entering between the pair of projecting pieces 24c _2.
The base portion 24c _{1 has a pair of groove portions 24c 11} provided in the central portion in the width direction along the longitudinal direction and individually accommodating a pair of conductive cables 24a.

Further, the cross-sectional shape of the outer surface of the base portion 24c ₁ opposite to the groove portion 24c ₁₁ is an arc shape, and the cross-sectional shape of the outer surface of the _{protruding piece 24c 2 is also an arc shape.}
The cross-sectional shape of the outer surface of the pair of hooking pieces 24b _{2 of the support plate 24b is a circular arc shape of each protruding piece 24c 2} of the cover plate 24c, a continuous arc shape portion 24b _21, and a flat surface portion 24b ₂₂ . Have.

Further, the base portion 24c _{1 has a pair of hemispherical ribs 24c 3} that prevent misalignment by sandwiching a lead wire 24a _{1 housed in each groove portion 24c 11} between both end portions 24ce and the intermediate portion 24cc of the pair of groove portions 24c _11. Are provided respectively. The hemispherical ribs 24c ₃ may not be paired, may be located in one place, or may be alternately spaced at equal intervals.
_{Further, a pair of ridge portions 24c 4} are provided along the longitudinal direction on both sides of each groove 24c ₁₁ in the base portion 24c _1.

The conductive unit 24 accommodates each conductive cable 24a in _{each groove 24c 11} of the cover plate 24c, covers _{the groove 24c 11} side with the support plate 24b, and then covers the inner surface of the support plate 24b and the cover plate 24c that come into contact with each other. The pair of ridges 24c ₄ are ultrasonically fused.
In addition, instead of ultrasonic welding, adhesion with an adhesive may be used.
In the assembled conductive unit 24, since the support plate 24b is longer than the cover plate 24c and each conductive cable 24a is longer than the support plate 24b, a part of both ends of each conductive cable 24a is supported by the support plate 24b. However, it is exposed to the outside.
The conductive cable 24a is a pair of conductive cables, but the present invention is not limited to this. For example, one conductive cable may be used. In this case, one cable may be configured by passing two conductive cables through one cable. In this case, the cable is passed through one of the two _{grooves 24c 11 (see FIG. 20).}

<Assembly of extension pipe>
Next, an example of assembling the extension pipe 20 will be described.
First, after the conductive unit 24 is inserted into the pipe body 21, the pair of male terminal portions 24a ₂ and the pair of female terminal portions 24a ₃ of the conductive unit 24 are inserted into the first connecting pipe portion 22 and the second connecting pipe portion. Incorporate into 23.

The pair of male terminal portions 24a ₂ are inserted into the connecting pipe main body 22a of the first connecting pipe portion 22 and are drawn out from the _{outlet 22a 21} and fixed to the _{rib structure 22a 22.} A pair of male terminal portions 24a ₂ which is fixed to the rib structure 22a ₂₂ protrudes from the rib structure 22a ₂₂ to the longitudinal direction of the tube. _{At this time, the pair of hook pieces 24b 2} on the one end side of the support plate 24b of the conductive unit 24 are placed on _{the pair of receiving pieces 22a 11} of the connecting tube main body 22a.

In addition, the pipe body 21, the first and second connection pipes 22 in the conductive unit 24, so that the conductive unit 24 can be aligned with the inner surfaces of the pipe main 21, the first and second connection pipes 22, 23, The portion of the support plate 24b facing the inner surface, that is, _{the outer surface of the pair of hook pieces 24b 2} of the support plate 24b and the outer surface of the cover plate 24c are formed in an arcuate shape.

Next, the small piece 22b and the cover member 22c are attached to the connecting pipe main body 22a, and the fixing portion 22a ₁ of the connecting pipe main body 22a is inserted into one end of the pipe main body 21 via an adhesive and fixed. At this time, the positioning convex portion 22a ₁₂ of the first connecting pipe portion 22 is engaged with the notch portion 21n of the pipe main body 21 for positioning.

The pair of female terminal portions 24a ₃ are inserted into the connecting pipe main body 23a of the second connecting pipe portion 23, pulled out from the _{outlet 23a 21} and fixed to the _{rib structure 23a 22.} A pair of male terminal portion 24a that is fixed to the rib structure 22a _{22 2} communicates with a pair of holes provided in the rib structure 22a _{22. At this time, the pair of hook pieces 24b 2} on the other end side of the support plate 24b of the conductive unit 24 _{are placed on the pair of receiving pieces 22a 11} (see FIG. 22) of the connecting tube main body 23a. As a result, both ends of the conductive unit 24 are supported by the first and second connecting pipe portions 22 and 23, so that the conductive unit 24 can maintain a raised posture even if it is not supported in the pipe body 21. .. Since the conductive unit 24 can be supported in the pipe body 21 only on both sides of the first and second connecting pipe portions 22 and 23, the pipe body 21 is not particularly modified, so that it can be done at low cost. , Assembling workability is also improved. Further, the support plate 24b is formed in a U shape having a shallow cross section, and the cover plate 24c is formed in a W shape in a cross section so that the conductive unit 24 is not separated from the inner surface of the pipe body 21 to form a gap due to warpage. Ribs are provided in each longitudinal direction.

Next, the small piece 23b and the cover member 23e are attached to the connecting pipe main body 23a, and the fixing portion 23a ₁ of the connecting pipe main body 23a is inserted into the other end of the pipe main body 21 via an adhesive and fixed. At this time, the positioning convex portion 23a ₁₂ of the second connecting pipe portion 23 is engaged with the notch portion 21n of the pipe main body 21 for positioning.
As a result, the assembly of the extension tube 20 is completed.

<About the suction port>
FIG. 23 is a bottom view showing a suction port body in the vacuum cleaner of the first embodiment, and FIG. 24 is a side view of the suction port body shown in FIG. 23. Further, FIG. 25 is a cross-sectional view taken along the line II of the suction port body shown in FIG. 23, and FIG. 26 is a cross-sectional view taken along the line II-II of the suction port body shown in FIG. 23.
As shown in FIGS. 23 to 26, the suction port body 40 is provided in front of and behind the bottom plate portion 41a, the top plate portion 41b facing the bottom plate portion 41a, and the traveling direction (arrow X direction in FIG. 23). The plate portion 41c and the rear plate portion 41d, and the left side plate portion 41e and the right side plate portion 41f provided on the left and right in the traveling direction of the top plate portion 41b are provided.

As shown in FIG. 23, the suction port body 40 is connected to a suction port 41 provided on the bottom plate portion 41a and extending in the left-right direction (direction of arrow A1) and connected to the rear of the suction port 41 via a connection shaft portion 42x. The pipe portion 42, the rotating brush 43 rotatably provided around the axis extending in the left-right direction of the suction port 41, and the suction flow path 16 (FIG. 25) connecting the suction port 41 and the connecting pipe portion 42. A rotary brush motor 44 (FIG. 26) for driving the rotary brush 43, a brush cover member 80 for covering the left end portion of the rotary brush 43 in FIG. 23, and a lift detection switch 47 and wheels 54 provided on the bottom plate portion 41a. Be prepared.

As shown in FIG. 26, the motor output gear 50 fixed to the motor output shaft 46 of the rotary brush motor 44 and the gear portion 58b attached to the rotary brush 43 are connected by a timing belt 48. ..

Therefore, when the start switch of the operation unit 11e (FIG. 1) is turned on and the cleaning work of the floor surface is started, the dust on the floor surface is swept up by the rotary brush 43 driven by the rotary brush motor 44 and sucked. It is conveyed from the port 41 to the dust cup unit 12 (FIG. 1) through the suction flow path 16 and the connecting pipe.

The lift detection switch 47 has a swing lever portion having wheels, a switch body that swingably supports the swing lever portion, and a torsion coil spring that biases the swing lever portion downward, and is a switch body. Is connected to the motor drive circuit board for the rotary brush housed in the bottom plate portion 41a, and the wheels of the swing lever portion are exposed outward and downward from the bottom plate portion 41a.

When the suction port body 40 is lifted and separated from the floor surface, the lift detection switch 47 operates to forcibly stop the drive of the rotary brush motor 44.

Inside the suction port body 40, a pair of lead wires electrically connected to the rotary brush motor 44 and the lift detection switch 47 are provided, and the pair of lead wires are pin-shaped provided in the pipe portion 42. It is electrically connected to a pair of male terminal portions 42a.
Further, a locking recess 42b is provided at the tip of the pipe portion 42.

The suction port body 40 configured in this way is detachably connected to the second connecting pipe portion 23 of the extension pipe 20. At this time, the pair of male terminal portions 42b of the suction port body 40 _{are inserted into the pair of female terminal portions 24a 3} of the extension tube 20 and electrically connected, and at the same time, they are electrically connected to the locking recess 42b of the suction port body 40. _{The locking claw portion 23c 3} of the locking member 23c of the extension tube 20 is engaged and disengaged (see FIGS. 1, 13, and 14).

(Embodiment 2)
In the first embodiment, the case where the suction cylinder portion of the drive device has a welded portion in which the first member 11x and the second member 11y are partially welded is illustrated, but the first member 11x and the second member 11y May have a welded portion that is entirely welded.

(Embodiment 3)
In the first embodiment, the electric vacuum cleaner 1 in which the battery 13 can be attached to and detached from the vacuum cleaner main body 10 is illustrated, but the battery may be built in the vacuum cleaner main body. In this case, the vacuum cleaner body is set in a charging stand connected to an external commercial power source to charge the battery.

(summary)
The vacuum cleaner of the present invention includes a vacuum cleaner main body having a dust cup unit and a drive device having a mounting portion for detachably mounting the dust cup unit.
The drive device has a main body portion including the electric blower and a suction cylinder portion protruding forward from the main body portion, and also has a space along the main body portion and the suction cylinder portion as the mounting portion. ,
The suction cylinder portion has a base end portion to be attached to the main body portion and has a first member constituting the mounting portion, and a front end portion of the first member so as to suck in outside air and introduce it into the dust cup unit. It has a second member having a front tubular portion mounted on the top, and a welding portion for welding and integrating the front end portion of the first member and the front tubular portion of the second member.

The vacuum cleaner of the present invention may be configured as follows, or they may be combined as appropriate.
(1) The welded portion may be formed by ultrasonic welding.
By doing so, a welded portion in which the contact surfaces to be welded in the first member and the second member are welded to each other can be obtained, and the outer surface other than the contact surface is not deformed or discolored.

(2) A rotary brush and a motor for rotationally driving the rotary brush are built-in, and a suction port body that is detachably connected to the suction cylinder portion directly or via an extension pipe is further provided.
The drive device may be provided with a conductor for supplying electric power from the drive device side to the motor of the suction port body in a gap between the first member and the second member. ..
In this way, a handy type vacuum cleaner in which the suction port body with a built-in rotating brush is directly connected to the suction cylinder portion or a stick type vacuum cleaner in which the suction port body is connected via an extension pipe can be obtained. Sufficient rigidity can be obtained with respect to the load on the suction cylinder.

(3) The drive device has a handle and has a handle.
The handle has an inner handle component that is connected to the second member and constitutes the inside of the handle, and a third member that is attached to the inner handle component and forms the outside of the handle. It is also good to be.
In this way, the inner handle component can be integrated as a part of the second member of the suction cylinder, so that the structure can be simplified, the number of parts can be reduced, and the assembly efficiency can be improved.

(4) Further provided with an operation unit provided between the inner handle component of the second member and the third member and having a switch for switching the electric blower into a drive state or a stop state.
The handle has a curved portion having a convex curved surface, and the operating portion has a pad portion arranged on the convex curved surface side of the curved portion.
The pad portion may have an outer surface along the convex curved surface and may have recesses corresponding to the switch at front and rear positions of the outer surface.
In this way, even if the user grasps the curved part of the handle during cleaning with an electric vacuum cleaner, there is a convex part in the center of the pad part, and the switch part has a concave part, so that the switch suddenly switches. It is possible to prevent malfunction due to being pressed.

It should be noted that the disclosed embodiments are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Vacuum cleaner 10 Vacuum cleaner body 11 Drive device 11a Main body 11am Electric blower 11c Handle 11c ₁ Upper curved part (curved part)
11d Suction tube part 11e Operation part 11e ₂ Pad part 11e ₂₂ , 11e ₂₃ Recessed part 11e ₃₂ , 11e ₃₃ Switch 11w Welding part 11x 1st member 11y 2nd member 11y ₁ Front cylinder part 11y ₃ Inner handle component 11z 3rd member 12 Dust cup unit 20 Extension pipe 40 Suction port 43 Rotating brush 44 Motor for rotating brush

Claims (4)

A suction cylinder having an opening at the front end, a dust cup unit having a cylindrical dust collecting container for collecting dust, a drive device having a built-in electric blower, and a battery detachably attached to the drive device. And equipped with a vacuum cleaner body,
The dust cup unit is arranged on the front side of the vacuum cleaner main body and below the suction cylinder portion so that the longitudinal direction of the dust collection container is substantially parallel to the suction cylinder portion.
In the drive device, a handle is formed by an opening provided on the rear side of the dust cup unit for passing a hand.
The handle is formed to include a position on the rear side of the electric blower and intersecting the center line of the electric blower along the front-rear direction.
On the center line, the distance between the rear end of the cover accommodating the electric blower in the driving device and the handle is shorter than the dimension in the front-rear direction of the cover, and the battery is the handle and the electric blower. An electric vacuum cleaner characterized in that it is arranged below the electric blower so as not to be located between the front and rear directions. On the center line, the distance between the handle and the electric blower is shorter than the dimension in the front-rear direction of the electric blower.
The vacuum cleaner according to claim 1. The rear end of the battery is exposed and is located in front of the rear end of the handle.
The vacuum cleaner according to claim 1 or 2. On the center line, the front end of the cover is adjacent to the rear end of the dust cup unit in the front-rear direction, and the rear end of the cover faces the opening.
The vacuum cleaner according to any one of claims 1 to 3.

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