TW201309253A - Electric vacuum cleaner - Google Patents

Abstract

This invention relates to an electric vacuum cleaner, of which the object is to provide an electric vacuum cleaner of which the operability of a handheld operation tube ios not damaged and capable of increasing the strength. The solution of the invention comprises a soft tube (3) connected with the handheld operation tube (4) in a rotatable manner through a rotary tube (51) and a soft tube cap (52). A handle (45) is mounted to the handheld operation tube (4) and has a blocked range (R) and comprises a bottom cap (43) which is located at a position opposite to the soft tube (3) and constitutes partly the blocked range (R). A convex part (43C) protruding toward a side of the soft tube (3) is formed on the bottom cap (43) and the convex part (43c) is formed in such a manner so as to abut the soft tube cap (52). Moreover, the surfaces of the convex part (43a) and the soft tube cap (52) are of arc shapes that are set in surface contact with each other.

Description

Electric vacuum cleaner

The present invention relates to an electric vacuum cleaner that increases strength.

In the prior art, a general electric vacuum cleaner is provided with a hand-operated tube mounted on a hose connected to the body of the cleaner, and the user sweeps in a state of gripping the handle provided on the hand-held operation tube. For example, it is proposed to provide a vacuum cleaner that improves the strength and improves the operability by providing the hand-operated tube with the shape of the occlusion section (see Patent Document 1).

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Laid-Open Patent Publication No. 2010-148688

However, in the electric vacuum cleaner described in Patent Document 1, when the user accidentally releases the hand-operated operation tube from the hand, the hand-held operation tube is dropped to the floor, and the lower portion of the hose or the hand-held operation tube (near the side of the floor) is A strong impact can cause damage.

An object of the present invention is to provide an electric vacuum cleaner which can improve the strength without impairing the operability of the hand-held operation tube.

An electric vacuum cleaner according to the present invention includes: a vacuum cleaner body; and a hand-held operation tube whose one end is connected to the cleaner body via a hose, wherein the hand-held operation pipe has a handle extending from the back of the hose And a blocking section having a substantially triangular shape in a side view thereof, and the handle is provided with a part of the lower cover that constitutes the blocking section between the hose and the hose.

According to the present invention, it is possible to obtain an electric vacuum cleaner which does not impair the operability of the hand-held operation tube and which can attain an increased strength.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the front and rear directions are based on the cleaner body 2, and the upstream side of the air sucked by the cleaner body 2 is the front side, and the downstream side is the back side. Further, in the hand-held operation tube 4 constituting the vacuum cleaner 1 of the present embodiment, the front-rear direction is in the state shown in Fig. 2, and the left side is the front side (upstream side), and the right side is the rear side (downstream side). In the state shown in Fig. 2, the upper side is the upper side and the lower side is the lower side.

As shown in Fig. 1, the electric vacuum cleaner 1 of the present embodiment includes a cleaner body 2, a hose 3, a hand-operated tube 4, an extension tube 5, and an intake port 6.

Inside the cleaner body 2, there is provided an electric blower (not shown) that generates an attractive force or a dust that collects dust by the attraction of the electric blower. Dust collection unit (not shown). When dust accumulated on the surface to be cleaned (ground or the like) is extracted, dust is taken out from the air intake port 6, and the dust passes through the inside of the hand-held operation pipe 4 through the extension pipe 5, and dust is collected in the cleaner body 2 via the hose 3.

The surface of the hose 3 is formed of a flexible member in the shape of a bellows, the upstream end is rotatably connected to the hand-operated tube 4, and the downstream end is detachably connected to the cleaner body 2.

The extension pipe 5 is configured by connecting the outer pipe 5a and the inner pipe 5b, and is formed into a telescopic structure that can be freely adjusted in length for the convenience of the user. Further, the extension pipe 5 has an unlock operation button 5c that releases the engagement state between the outer tube 5a and the inner tube 5b when the expansion and contraction is released.

The intake port 6 is detachably connected to the extension tube 5, for example, by a cartridge 6a that accommodates a rotary brush (not shown) that is in contact with the surface to be cleaned (ground) or the like, and that is rotatably coupled to the cartridge 6a. The tube portion 6b and the like are configured. Further, the tube portion 6b is coupled to the cartridge 6a so as to be rotatable at an angle parallel to the surface to be cleaned.

As shown in Fig. 2, the hand-held operating tube 4 has a connecting portion 4a that is connected to the extension tube 5 (see Fig. 1), and a handle 45 for the handle portion 44 that the user grips by hand. The user performs the sweeping in a state where the handle portion 44 is gripped by hand as shown, for example. Further, the handle 45 is configured to have an occlusion section R having a substantially triangular (sabra shape) side view. In the present embodiment, the portion (the highest position) that is the farthest from the direction in which the axial direction of the hose 3 is orthogonal to the portion of the handle 45 that forms the blocking section R corresponds to the vertex portion T (substantial vertex portion). . Further, since the apex portion T is gripped by a finger and is operated, it is not a point but has a width in the front and rear directions and is configured as good.

Further, the handle 45 is provided with a movable plate 49 that protrudes from the blocking section R. The movable plate 49 is supported by the handle 45 so as to be substantially slidable in the front-rear direction, and the user holds the handle portion 44 by The upper index finger pulls the movable trigger 49 rearward, and the engagement state of the unlock operation button 5c (see FIG. 1) as a predetermined operation is released. For example, the user can expand and contract the extension tube 5 by operating the movable plate machine 49 while pressing the suction port 6 with the foot. Therefore, the user does not need to lift the extension tube 5 (see FIG. 1) or the like to operate the unlock operation button 5c (refer to FIG. 1). Further, by separating the finger from the movable plate machine 49, the movable plate machine 49 is returned to the initial state. Therefore, when the grip handle portion 44 operates the hand operation tube 4, the user does not mistakenly operate the movable panel machine 49, and the hand does not leave the handle portion 44, so that the telescopic operation of the extension tube 5 can be operated with ease.

Further, the predetermined operation by the operation of the movable trigger 49 is not limited to the releasing operation of the unlocking operation button 5c, and the unlocking of the extension tube 5 and the suction port 6 may be performed, or the hand-held operation tube 4 may be used. Various types of changes can be made by releasing the lock of the extension tube 5.

As shown in FIG. 3, on the upper surface of the hand-operated operation tube 4, the hand-operated operation switch 46 is disposed in front of the handle portion 44. The hand-held operation switch 46 is composed of a plurality of buttons such as start/stop of operation, adjustment of attraction force, and the like. By thus providing the hand-operated operation switch 46 in front of the handle portion 44, when the grip handle portion 44 operates the hand-held operation tube 4, the user can be prevented from erroneously operating the hand-operated operation switch 46. Further, on the upper surface of the hand-operated operation tube 4, a front side of the hand-operated operation switch 46 is provided for attaching and detaching the extension tube 5 (refer to Fig. 1) Loading and unloading button 47.

Further, the hand-operated operation tube 4 is provided with a storage hook 48 that can be hung on the front end of the extension tube 5 or various portions after the extension tube 5 and the hand-held operation tube 4 are removed when the vacuum cleaner 1 is housed.

Moreover, the hand-operated operation tube 4 is connected to the hose cover 52 and the hose 3 which are described later by the rotary tube 51 and the cover rotary tube 51, and the hose 3, the rotary tube 51 and the covered rotary tube hose cover 52 can be held by hand. The operation tube 4 is connected in a rotating manner. Further, the detailed structure of this portion will be described later. Thus, the rotary tube 51 is rotatably coupled to the hand-held operation tube 4, so even if the hose 3 is twisted, the rotary tube 51 is rotated therewith, so that the twist of the hose 3 can be prevented.

As shown in Fig. 4, the hand-operated operation tube 4 includes an operation tube main body 41, an upper cover 42, and a lower cover 43, and includes a switch substrate 46a for holding the operation switch 46 and the like. The switch substrate 46a includes a plurality of touch switches and the like for detecting a pressing operation of the hand operation switch 46. Further, in Fig. 4, the structure of the hand-operated tube 4 is not shown in the drawings except for the member for screw fixing.

Further, the inside of the hand-operated operation tube 4 includes a first unlocking mechanism for attaching and detaching the attaching and detaching button 47 of the extension tube 5, a second unlocking mechanism of the movable platen 49, and the like.

The first unlocking mechanism is formed by the support portion 47b including the shaft 47a, the operation portion 47c formed to protrude from the insertion hole 42s of the upper cover 42 in one of the support portions 47b, and the extension tube 5 formed on the other side (see Fig. 1 is a view in which the engaging portion 47d is engaged. When the operation portion 47c is pressed, the support portion 47b performs the see-saw operation and the engagement portion with the shaft 47a as a fulcrum. The 47d is lifted up, and the engagement state (locking) with the engaged portion (not shown) of the extension pipe 5 is released. Further, when the handle (finger) is released from the operation portion 47c, the support portion 47b is restored to the initial state by the elastic force of the spring member (not shown).

The second unlocking mechanism includes a first lever 49b of the operation portion 49a that is connected to the user's finger, a link member 49c that is coupled to the first lever 49b, and a second lever 49d that is coupled to the link member 49c. And so on. Further, the second rod 49d is coupled to the unlock operation button 5c by a lever (not shown) on the side surface of the extension tube 5 (see Fig. 1). When the operation unit 49a is operated, the link member 49c is operated by the first lever 49b, and thereafter the second lever 49d is moved in the front-rear direction, so that the unlock operation button 5c is released. Moreover, the operating portion 49a restores the initial state (locked state) by the elastic force of the spring member (not shown) by releasing the finger from the operation portion 49a.

The operation tube main body 41 includes a cylindrical portion 41a having a flow path M1 (see FIG. 7) that communicates the extension tube 5 (see FIG. 1) with the rotary tube 51 (the hose 3); and the cylindrical portion 41a. The body portion 41b of the handle 45 is formed integrally.

The main body portion 41b is configured such that the front portion is located above the tubular portion 41a and extends to the side (rear) to which the hose 3 is connected. Further, the main body portion 41b is configured such that the closing section R of the handle 45 is present rearward of the rear end 41a1 of the tubular portion 41a.

In other words, the main body portion 41b is inclined from the front end 41a2 of the tubular portion 41a toward the rear side away from the tubular portion 41a (the hose 3), and the second inclined portion 41b2 is close to the soft side. The direction of the tube 3 is inclined; water The flat portion 41b3 connects the first inclined portion 41b1 and the second inclined portion 41b2, and the three are integrally formed to constitute a closed space (blocking section R). The first inclined portion 41b1 and the second inclined portion 41b2 are formed in a substantially convex shape toward the inside in a cross-sectional view (see FIG. 8), and the horizontal portion 41b3 is formed in a substantially plate shape.

Further, the tubular portion of the horizontal portion 41b3 is formed such that the flow path M1 of the pair 41a (see FIG. 7), the rotary tube 51, and the hose 3 are parallel. Further, the horizontal portion 41b3 is formed in the vicinity of the outer circumference of the hose 3 and extends in the front-rear direction (horizontal) (see Fig. 2).

Further, the rear end portion 41s of the main body portion 41b has a shape in which the horizontal portion 41b3 is curved upward toward the rear. Therefore, the rear end portion 41s of the main body portion 41b is located above the horizontal portion 41b3 in the vertical direction (vertical direction).

Moreover, the boss 41c protrudes upward and is formed in the boundary portion (the apex portion T) of the first inclined portion 41b1 and the second inclined portion 41b2 of the main body portion 41b. Further, a boss 41d (see FIG. 7) and a boss insertion hole 41e are formed in the handle main body portion 41b (see FIGS. 7 and 9).

The upper cover 42 is substantially arcuate and is formed so as to cover the entirety from the front end to the rear end of the operation tube body 41, and constitutes the entire upper surface of the hand-operated operation tube 4. That is, the upper cover 42 has the first inclined surface 42a along the first inclined portion 41b1 of the main body portion 41b, and the second inclined surface 42b (inclined surface) formed along the second inclined portion 41b2. Further, the first inclined surface 42a and the second inclined surface 42b are formed in a convex shape that is substantially upward in the cross-sectional viewing angle (see Fig. 8).

Thus, since the upper cover 42 spans the full length L1 range of the hand-held operating tube 4 (Refer to Fig. 4), when the entire operation tube 4 is viewed from above, the upper cover 42 is undivided on the way, and can be improved by coloring the upper cover 42 or applying a coating using a metal-containing resin. Design.

Further, the upper cover 42 is formed with a screw attachment hole 42c for inserting and fixing the screw 60a at a position corresponding to the hub 41c at the vertex portion T of the boundary between the first inclined surface 42a and the second inclined surface 42b; and screw mounting The hole 42d is for inserting the fixing screw 60b on the first inclined surface 42a. Insertion holes 42c1 and 42d1 (see FIG. 7) into which the screws 60a and 60b are inserted are formed inside the screw attachment holes 42c and 42d. Further, the boss 42e is formed at the inner rear end portion of the upper cover 42 so as to protrude downward.

The lower cover 43 is a member that forms one of the blocking sections R together with the horizontal portion 41b3 of the handle main body portion 41b, and is disposed to overlap the lower side of the horizontal portion 41b3, and is configured to face the hose 3 and the hose cover 52.

Further, the lower cover 43 is composed of a horizontal plate portion 43a extending in a straight line shape in the front-rear direction (horizontal direction), and a curved portion 43b at a rear end portion of the horizontal plate portion 43a in a direction away from the hose 3 ( Bend up, continuous and integrally formed. In the horizontal plate portion 43a, a convex portion 43c that protrudes toward a surface facing the hose cover 52 is formed downward. The inner side of the curved portion 43b is formed with a cylindrical screw insertion portion 43d that protrudes upward.

As shown in Fig. 4, the rotary tube 51 has a substantially cylindrical shape, and a flow path having a linear shape in the axial direction is formed inside. Further, the rotary tube 51 is formed on the front side in the axial direction, and a pair of annular projections 51a and 51a are formed so as to be spaced apart in the axial direction, and are held in the axial direction at substantially the central portion in the axial direction. A pair of annular crotch portions 51b are formed in a spaced manner, 51b.

The hose cover 52 is a member that covers the periphery of the engagement portion of the rotary tube 51 and the hose 3 (see FIG. 7), and has a pair of cover portions 52a and 52a having a substantially semi-cylindrical shape, and a cover portion. 52a and 52a are configured to be combined into a cylindrical shape. Further, the concave groove portion 52a1 is formed on the inner edge portion of the front end of the lid portion 52a along the circumferential direction. The hose cover 52 is assembled to the rotary tube 51 by fitting the groove formed by the flange portions 51b and 51b and the groove portion 52a1. Further, the assembly means of the pair of cover portions 52a and 52a is constituted by, for example, an engagement portion (not shown) that is engageable with each other. Thereby, the structure in which the engaging portion is not exposed to the outside can be obtained, so that the design can be improved. Further, it is not limited to the engaging portion, and various methods such as screw fixing, adhesion, and welding may be employed.

As shown in Fig. 5, the convex portion 43c formed in the lower cover 43 forms a downward ridge from a front end of the horizontal plate portion 43a to a substantially central portion in the front-rear direction. Further, the convex portion 43c extends from the distal end to a position facing the rear end portion 52a2 of the hose cover 52 (see Fig. 7). In the present embodiment, the rear end portion 52a2 of the hose cover 52 is in contact with the convex portion 43c of the lower cover 43. Further, in the fifth drawing (Fig. 6), for the sake of convenience of explanation, it is illustrated in a state of a little separation.

As shown in Fig. 6, the surface 43c2 of the convex portion 43c facing the hose cover 52 is formed in an arc shape along the arc shape of the outer circumferential surface 52s of the hose cover 52. Further, the curvature of the surface 43c2 and the curvature of the outer circumferential surface 52s are set to be the same, and the surface 43c2 and the outer circumferential surface 52s are configured to abut against each other.

Further, in the case where the user's hand is inadvertently separated from the handle 44 of the hand-operated operation tube 4, causing the hand-operated operation tube 4 to fall to the floor, the root portion (the side of the groove portion 52a1) of the dropped impact hose cover 52 is severely deformed. , causing damage to the hose cover 52. However, in the present embodiment, even if the hose cover 52 is subjected to the impact when the hand-operated operation tube 4 is dropped to the ground, it is intended to be deformed toward the side (upward) of the handle 45 with the root as a fulcrum, also due to the rear end portion 52a2 of the hose cover 52. Since the (outer circumferential surface 52s) abuts against the convex portion 43c of the lower cover 43, the deformation of the hose cover 52 can be minimized, and the hose cover 52 can be prevented from being damaged. Therefore, it is not necessary to constitute the hose cover 52 with a high-strength member in order to prevent deformation of the hose cover 52. Further, the convex portion 43c of the lower cover 43 and the outer circumferential surface 52s (see FIG. 6) of the hose cover 52 facing the convex portion 43c are each formed in an arc shape, and are partially abutted in an arc shape. With this configuration, even if the force acting on the hose cover 52 due to the impact of the drop is applied to the convex portion 43c, the force can be dissipated by the surface contact, so that the convex portion 43c or the hose cover 52 can be prevented from being damaged.

Further, as shown in Fig. 6, the horizontal plate portion 43a of the lower cover 43 is slidably inserted into the horizontal portion 41b3. In other words, the horizontal portion 41b3 of the operation tube main body 41 (the main body portion 41b) is folded back toward the inner side in the width direction, and has a substantially C-shaped cross-sectional view. Further, the lower cover 43 is inserted into the horizontal portion 41b3 from the rear portion of the horizontal portion 41b3, and the both end portions 43a1, 43a1 of the horizontal plate portion 43a are slidably inserted into the concave portions of the both end portions formed in the horizontal portion 41b3 in abutting state. 41f, 41f. Thereby, the strength of the operation tube main body 41 (the hand-held operation tube 4) can be improved by forming the closed space R1 by the horizontal portion 41b3 and the lower cover 43. By making the horizontal part 41b3 is formed in a substantially C-shaped cross-sectional view, and slidably assembles the lower cover 43, so that the joint between the horizontal portion 41b3 and the lower cover 43 becomes almost indistinct, thereby improving the strength and improving the appearance design. Sex. Further, by forming the horizontal portion 41b3 and the lower cover 43 in the above-described configuration, even if the hose cover 52 is rotated while abutting against the lower cover 43, the lower cover 43 is not displaced in the width direction.

Further, as shown in Fig. 6, the lower cover 43 is formed such that the width dimension W2 of the convex portion 43c is shorter than the width dimension W1 of the horizontal portion 41b3, and the convex portion 43c is formed in the width direction of the horizontal portion 41b3 (the lower cover 43). The approximate central part. Thereby, a substantially concave gap G formed by the horizontal portion 41b3, the side surface 43c1 of the convex portion 43c, and the outer circumferential surface 52s of the hose cover 52 is formed on both sides in the width direction of the convex portion 43c.

Further, the hose cover 52 is attached to rotate the operation tube 4 (the operation tube main body 41) in order to prevent the twist of the hose 3, so that the hose cover 52 is rotated while the user holds the hose cover 52. There is a possibility of pinching your fingers or the skin that is caught in the palm of your hand. Therefore, in the present embodiment, the gap is prevented by setting the gap G to a predetermined size (for example, 5 mm). That is, if the gap is larger than the predetermined size, the user's finger may be pinched and feel pain, or if the gap is smaller than the predetermined size, the skin of the user's palm may be pinched and painful. After that. Thus, by vacating the gap G of a predetermined size (approximately 5 mm) on both sides of the convex portion 43c of the lower cover 43, the hose cover 52 can prevent the finger from being caught or the skin sandwiched between the palms, whether it is rotated left or right.

As shown in Fig. 7, the rotary tube 51 is fixed to the outer circumferential surface thereof. The tube 3 is rotatably mounted to the hand-held operating tube 4. Moreover, the hose 3 is fixed to the rotary tube 51 by a holding means (not shown), and the airtightness of the rotary tube 51 and the hose 3 is ensured by a sealing member (not shown).

A step portion 41g on which the tip end of the rotary tube 51 abuts is formed on the wall surface of the cylindrical portion 41a constituting the flow path M1, and the tip end portion of the rotary tube 51 is slidably inserted into the step portion 41g. Further, the step portion 41g and the tip end of the rotary tube 51 are formed by a sealing member (not shown) so that air does not leak from the gap between the hand-held operation tube 4 and the rotary tube 51.

Further, the front portion of the rotary tube 51 is inserted into the tubular portion 41a of the operation tube main body 41, and the front end surface of the hose cover 52 abuts against the rear end 41a1 of the tubular portion 41a.

Further, the fixing pin 70 is inserted into the operation tube main body 41, and the tip end of the fixing pin 70 is inserted into the groove formed between the projections 51a and 51a, so that the rotation tube 51 is formed without being detached from the operation tube main body 41. Thereby, the rotary tube 51 and the hose 3 integrally rotate the hand-operated tube 4, and the hose cover 52 is formed to rotate integrally with the hose 3 and the rotary tube 51.

Further, as shown in Fig. 7, the handle portion 44 of the handle 45 is formed such that the section height H1 is the thinnest at the apex portion T of the blocking section R. Incidentally, the handle portion 44 is a member for gripping the user by hand, so the grip comfort changes depending on the cross-sectional shape. Therefore, in the present embodiment, the hand grip comfort of the user's index finger portion is improved by setting the dimension H1 of the vertex portion T of the handle portion 44 to the smallest dimension (for example, approximately 27 mm). Further, in the present embodiment, the width W3 (see Fig. 8) of the handle portion 44 is configured to be substantially uniform at any position of the handle portion 44. Again, the handle The section height H1 of the portion 44 is formed to be thinner than the section height H2 of the center portion of the handle portion 44 and the section height H3 of the rear end portion, and the section height H3 is formed to be thicker than the section height H2. Therefore, the handle portion 44 is configured to be thicker from the vertex portion T toward the end of the handle. In this way, since the grip portion on the side of the little finger such as the golf club can be surely gripped, it is easy to lift when the grip handle portion 44 is lifted in the state where the suction port 6 or the extension tube 5 is attached. .

Further, as shown in FIGS. 7 and 8, the operation tube main body 41 and the upper cover 42 are screwed to the apex portion T of the handle portion 44. That is, by inserting the screw 60a from the screw mounting hole 42c of the upper cover 42, and inserting the screw insertion hole 42c1, the screw 60a is screwed to the hub 41c of the operation tube body 41, so that the upper cover 42 is fixed to the operation tube body. 41 above.

Further, the operation tube body 41 of the handle portion 44 is formed of a thick resin to increase the strength. Further, as shown in Fig. 8, both ends of the operation tube main body 41 and the upper cover 42 in the width direction are assembled by inserting and fitting the pair of edge portions 41h and 42h, so that the operation tube main body 41 and the upper cover 42 become It does not shift in the width direction. Further, since the upper cover 42 is fixed to the operation tube main body 41, the closed space R2 is formed between the operation tube main body 41 and the upper cover 42, so that the strength of the hand-held operation tube 4 can be improved.

Further, as shown in FIGS. 7 and 9, the operation tube main body 41, the upper cover 42, and the lower cover 43 are screwed to the rear end portion of the handle portion 44. That is, the screw 60c is inserted from the screw insertion portion 43d of the lower cover 43, and the screw insertion hole 43d1 and the screw insertion hole 41e of the operation tube main body 41 are inserted, and the screw 60c is screwed to the boss 42e of the upper cover 42. , the operation tube body 41, the upper cover 42. The three members of the lower cover 43 are fixed together.

By making the screw 60c into the lower side, the design of the hand-operated tube 4 can be improved when viewed from above, and the hand-held operation can be further improved by fixing the lower cover 43 to the operation tube body 41 via the screw 60c. The strength of the tube 4. In particular, the rear end portion of the hand-operated operation tube 4 is the portion where the strength is most required when the handle portion 44 is bent or twisted, and the strength can be improved by simultaneously fastening the three members.

Further, it is very important to engage the shape constituting the outer appearance of the upper cover 42 and the lower cover 43 of the hand-held operation tube 4 and the operation tube main body 41, and there is a possibility that the user's hand feels uncomfortable if there is a difference in height or a gap. Therefore, in the present embodiment, the three-member structure is fastened by the screw 60c as described above, and the shape of the three members can be surely engaged without forming the step or the gap, so that the gap between the three members can be minimized. Therefore, the handle portion 44 is gripped without feeling uncomfortable and the design of the appearance can be improved.

As shown in Fig. 7, in the electric vacuum cleaner 1, the flow path M1 of the tubular portion 41a of the pipe main body 41, the rotary pipe 51 connected to the tubular portion 41a, and the hose 3 connected to the rotary pipe 51 are The hose cover 52 and the lower cover 43 are all configured in parallel. Further, in the prior art, if the flow path between the tubular portion and the rotating tube is curved, the attraction force may be lowered, and the dust flowing inside may collide with the inner wall, so that the possibility of dust adhering to the inner wall is increased. . Therefore, in the present embodiment, all of the tubular portion 41a, the rotary tube 51, and the hose 3 are arranged in a straight line along the center line Q, and the portion where the flow path is not curved is formed, so that the attraction of the vacuum cleaner 1 can be prevented. It is lowered to provide an attractive electric vacuum cleaner 1 . also because Since the dust flowing inside is less likely to collide with the inner wall, the adhesion of the dust is reduced, the reduction in the flow path area can be suppressed, and the decrease in the attractive force can be suppressed.

In addition, if the hand-operated operation tube 4 has an angle and is bent, causing the user to accidentally drop the hand-operated operation tube 4, excessive stress may be applied to the hose or the hose mounting portion, causing the hose or the hose and A partial breakage of the hand-operated tube connection occurs. In the present embodiment, all of the flow path M1, the rotary tube 51, the hose 3, the hose cover 52, and the lower cover 43 of the tubular portion 41a can be arranged in parallel so that when the hand-operated operation tube 4 is dropped, It is possible to prevent the excessively acting stress from acting on the root portion of the hose cover 52 or the front end portion of the rotary tube 51, and because the displacement amount of the hose cover 52 can be minimized, the hose 3 and the hand-held operation tube 4 can be prevented. The rotating tube 51 and the hose cover 52 are damaged.

Further, as shown in Fig. 7, the second inclined portion 42b constituting the handle 44 in the hand operation tube 4 has a straight portion 42b1. Further, the linear portion 42b1 of the present embodiment is formed in a range from the center portion of the handle 44 to the end of the handle as indicated by the double-headed arrow. By having the straight portion 42b1, when the grip handle 44 is lifted in the state in which the intake port 6 or the extension tube 5 is attached, the palm is in close contact with the straight portion 42b1 and can be supported over a large area, so that it is easy to lift Therefore, it is possible to provide the electric vacuum cleaner 1 which is excellent in usability.

Further, as shown in Fig. 10(a), when sweeping the depth of the bed B (the lower surface of the sofa) or the like having a short distance from the ground, it is necessary to lower the extension pipe 5 to be substantially parallel to the ground. operating. At this time, if the side view angles of the tubular portion 41a and the rotary tube 51 are angled and curved in a U shape, the hose 3 may be in contact with the ground in a state of being pressed by force, resulting in deterioration in usability, and There is a possibility that the hose 3 is damaged by the friction between the hose 3 and the ground. Therefore, in the present embodiment, when the depth of the lower bed B or the like is swept away, even if the extension pipe 5 is lowered to be substantially parallel to the ground, the hose 3 does not come into contact with the ground, or even if it is in contact, There is a slight frictional force, so the usability is high and the hose 3 is not damaged. Further, since the lower cover 43 or the hose cover 52 are all formed parallel to the center line Q, the unevenness in appearance is small and the design can be improved.

Further, since the rear end portion of the lower cover 43 is formed in an upwardly curved shape, it is not necessary to grip the entire handle 44 to operate when the lower surface of the bed B is swept or the like, as shown in Fig. 10(b), The V-shaped corner portion is hung by the index finger at the rear end of the handle 44, and the thumb is placed on the upper cover 42, and the side of the middle finger is attached to the lower cover 43 by supporting the hand-operated operation tube 4 with three fingers. The hand-held operation tube 4 can be stably held while sweeping.

As described above, according to the vacuum cleaner 1 of the present embodiment, the hand-held operation tube 4 is provided with the handle 45 having the blocking section R, and the handle 45 has a portion constituting the blocking section R at a position facing the hose 3 Since the cover 43 is formed so as to form a closed space with the operation tube main body 41 constituting the occlusion section R, the strength of the hand-held operation tube 4 can be improved. Moreover, since the handle 45 is provided with the closing section R, it is possible to prevent the hand-held operation tube 4 from coming off the user's hand without impairing the operability.

Further, if the hose 3 is configured to be freely rotatable to the hand-operated operating tube 4, the engagement portion of the hose 3 and the hand-held operating tube 4 is most vulnerable and is highly likely to be broken. Because if the hose 3 hits the ground, it is made to the hand-operated operation tube 4. The stress of the engaging portion is bent, so that the engaging portion becomes the most susceptible to damage. Therefore, in the present embodiment, the configuration is such that the rotary tube 51 and the hose cover 52 are provided, and the hose 3 is freely rotatable to the hand-held operation tube 4, and the convex portion 43c of the lower cover 43 abuts against the hose. Since the cover 52 is provided, the strength of the hose mounting portion (the root portion of the hose cover 52, the front end portion of the rotary tube 51, and the like) rotatably attached to the hand-operated operation tube 4 can be improved.

In the present embodiment, the convex portion 43c of the lower cover 43 is formed at a substantially central portion in the width direction of the hand-held operation tube 4, and a predetermined gap G for preventing the finger from being caught is provided on both sides in the width direction of the convex portion 43c. Therefore, it is possible to prevent the hose mounting portion rotatably attached to the hand-held operating tube 4 from being broken, and to prevent the skin of the user's finger or palm from being caught in the rotating hose cover 52.

Further, in the present embodiment, the shape of the surface 43c2 of the convex portion 43c of the lower cover 43 and the outer circumferential surface 52s of the hose cover 52 are each formed into a circular arc shape, and the outer circumferential surface 52s and the lower cover of the hose cover 52 are formed. Since the flanges 43 are in contact with each other in the arc-shaped portion, the hose cover 52 disperses the force against the convex portion 43c, and the lower cover 43 or the hose cover 52 can be prevented from being damaged.

Further, in the present embodiment, since the upper cover 42 is formed on the upper surface of the hand-operated tube 4, the lower cover 43 and the upper cover 42 are fixed by screwing the operation tube main body 41 of the hand-operated tube 4 from the lower side of the lower cover 43. The design of the appearance when the hand-operated tube 4 is viewed from above can be improved, and the strength of the blocking section R can be improved by fastening the lower cover 43 to the operation tube body 41 and the upper cover 42 integrally.

The present invention is not limited to the above embodiment, and can be variously used. Implementation. For example, by providing the lower cover 43, although the hose 3 directly contacts the operation tube body 41, the lower cover 43 is made of a material softer than the material of the operation tube body 41, so that the hose 3 can be prevented. Damage and long-term use of the electric vacuum cleaner 1.

1‧‧‧Electric vacuum cleaner

2‧‧‧ vacuum cleaner body

3‧‧‧Hose

4‧‧‧Handheld operation tube

5‧‧‧Extension tube

6‧‧‧Intake port

41‧‧‧Operating tube body

41a‧‧‧Cylinder

41b‧‧‧Handle body

41b1‧‧‧1st inclined part

41b2‧‧‧2nd inclined part

41b3‧‧‧ horizontal department

41c‧‧‧screw

42‧‧‧上盖

42a‧‧‧1st inclined surface

42b‧‧‧2nd inclined surface (inclined surface)

42b1‧‧‧ Straight line

42e‧‧‧screw

43‧‧‧Under the cover

43a‧‧‧ horizontal board

43b‧‧‧Bend

43c‧‧‧ convex

43c2‧‧‧ surface

43d‧‧‧ screw insertion department

44‧‧‧handle

45‧‧‧Handle

46‧‧‧Handheld operation switch

49‧‧‧ movable plate machine, trigger

51‧‧‧Rotating tube

51a‧‧‧Protruding

51b‧‧‧锷

52‧‧‧Hose cover

52a‧‧‧ Cover Department

52a1‧‧‧Ditch

52a2‧‧‧ Back end

52s‧‧‧around

60a, 60b, 60c‧‧‧ screws

70‧‧‧fixed pin

G‧‧‧ gap

H1, H2, H3‧‧‧ section height

M1‧‧‧ flow path

R‧‧‧Closed interval R

T‧‧‧ apex (approximate vertex)

Fig. 1 is a perspective view showing the appearance of the entire vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is a side view showing the appearance of the hand-held operating tube of the electric vacuum cleaner.

Fig. 3 is a perspective view showing the appearance of a hand-held operating tube of the electric vacuum cleaner.

Fig. 4 is a perspective view showing the appearance of a hand-held operating tube of the electric vacuum cleaner.

Fig. 5 is a perspective view showing the appearance of the lower cover of the hand-operated operation tube.

Fig. 6 is an enlarged cross-sectional view taken along line A-A of Fig. 2.

Fig. 7 is a longitudinal sectional view showing a hand-held operating tube of the electric vacuum cleaner.

Fig. 8 is an enlarged cross-sectional view taken along line B-B of Fig. 2.

Figure 9 is an exploded cross-sectional view showing the rear end portion of the hand-held operating tube.

Fig. 10 is a view showing a state of use (a) of the electric vacuum cleaner according to an embodiment of the present invention in a first use state, and (b) is a second use state.

3‧‧‧Hose

4‧‧‧Handheld operation tube

41‧‧‧Operating tube body

41a‧‧‧Cylinder

41a1‧‧‧Back end of the tubular portion 41a

41b‧‧‧Handle body

41b3‧‧‧ horizontal department

41c‧‧‧screw

41e‧‧‧screw insert hole

41d‧‧‧screw

41g‧‧‧step department

42‧‧‧上盖

42a‧‧‧1st inclined surface

42b‧‧‧2nd inclined surface (inclined surface)

42b1‧‧‧ Straight line

42c‧‧‧ screw mounting hole

42c1‧‧‧screw through hole

42d‧‧‧ screw mounting hole

42d1‧‧‧screw through hole

42e‧‧‧screw

43‧‧‧Under the cover

43a‧‧‧ horizontal board

43c‧‧‧ convex

43d‧‧‧ screw insertion department

43d1‧‧‧screw hole

44‧‧‧handle

45‧‧‧Handle

46‧‧‧Handheld operation switch

46a‧‧‧Switch substrate

47‧‧‧Loading button

48‧‧‧ Storage hook

49‧‧‧ movable plate machine, trigger

51‧‧‧Rotating tube

51a‧‧‧Protruding

51b‧‧‧锷

52‧‧‧Hose cover

52a1‧‧‧Ditch

52a2‧‧‧ Back end

60a, 60b, 60c‧‧‧ screws

70‧‧‧fixed pin

H1, H2, H3‧‧‧ section height

M1‧‧‧ flow path

R‧‧‧Closed interval R

T‧‧‧ apex (approximate vertex)

Q‧‧‧ center line

Claims (5)

An electric vacuum cleaner comprising a vacuum cleaner body and a hand-held operation tube whose one end is connected to the vacuum cleaner body via a hose, wherein the hand-operated operation tube has a side extending from a side to which the hose is connected and has a side surface The handle of the occlusion section having a substantially triangular shape in a viewing angle, the handle being provided with a part of the lower cover constituting the occlusion section at a position facing the hose. The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner includes: a rotating pipe integrally rotating with the hose and the cover tube; and a fitting portion covering the hose and the rotating pipe A hose cover that rotates integrally with the hose and the rotating tube, and the lower cover has a convex portion that protrudes toward the side surface of the hose, and the convex portion abuts against the hose cover. The electric vacuum cleaner according to claim 2, wherein the convex portion of the lower cover is formed at a substantially central portion of the hand-operated tube in the width direction, and is provided on both sides in the width direction of the convex portion. gap. The electric vacuum cleaner according to claim 2, wherein the convex portion of the lower cover and the outer circumferential surface of the hose cover are each formed in an arc shape, and the hose cover and the foregoing The cover abuts with each arcuate portion. The electric vacuum cleaner according to any one of claims 1 to 3, wherein the hand-held operation tube is provided with an upper cover, The lower side of the lower cover is screwed into the operation tube body of the hand-held operation tube to fix the lower cover and the upper cover.