CN216823215U - Electric vacuum cleaner - Google Patents

Abstract

The utility model provides an electric dust collector, it can not overturn on horizontal planes such as floor, operation platform according to the change of the focus position that arouses by the loading and unloading of battery, can stand alone stably. When the secondary battery (18) is attached to the main body case (12), the cleaner main body (2) grounds at least two of the three or more legs (31) and causes at least one leg (31) to stand on the horizontal surface in a first posture without being grounded, and when the secondary battery (18) is detached from the main body case (12), causes at least two legs (31) included in the three or more legs (31) that are not grounded in the first posture to be grounded, and causes at least one leg (31) included in the at least two legs (31) that are grounded in the first posture to stand on the horizontal surface in a second posture without being grounded.

Description

Electric vacuum cleaner

Technical Field

The utility model discloses an embodiment relates to electric vacuum cleaner.

Background

There is known an electric vacuum cleaner including a cleaner body, a dust box, and a battery that is detachable from the cleaner body.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2020 and 171515

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

The center of gravity of a conventional vacuum cleaner is largely changed between a case where a battery is attached to the vacuum cleaner main body and a case where the battery is detached from the vacuum cleaner main body.

However, in the case where a battery is attached to the cleaner body, or in the case where a battery that is not detachably fixed to the cleaner body is provided, there is an example where a leg that can stably support the electric cleaner on a horizontal surface without tipping over is provided.

However, when the battery is detached from the cleaner body, the conventional electric cleaner cannot stand alone stably with the legs, and may fall over.

When the electric vacuum cleaner is turned over, there is a risk that dust accumulated in the dust box leaks out or the electric vacuum cleaner is damaged.

Therefore, an object of the present invention is to provide an electric vacuum cleaner that can stably stand alone without falling over on a horizontal surface such as a floor or a work table in response to a change in the position of the center of gravity due to attachment and detachment of a battery.

Means for solving the problems

In order to solve the above problem, an electric vacuum cleaner according to an embodiment of the present invention includes a cleaner main body including: a main body case; an electric blower housed in the main body case; a dust collecting device connected to a suction side of the electric blower; a battery unit detachably attached to the main body case and storing power consumed for driving the electric blower; and three or more legs. The electric vacuum cleaner is configured to, when the battery unit is attached to the main body casing, stand alone in a first posture on a horizontal plane with a first leg group including at least two of the three or more legs grounded and at least one leg not grounded; when the battery unit is detached from the main body case, a second leg group including at least two of the three or more leg units, including the leg unit that is not grounded in the first posture, is grounded, and at least one of the leg units in the first leg group is not grounded and stands alone on a horizontal plane in a second posture.

The three or more leg portions may have a common leg portion belonging to both the first leg group and the second leg group.

It is also possible to distribute the weight in the following manner: when the battery unit is attached to the main body case, the center of gravity is located between the pair of leg portions that are farthest from each other in the first leg group, and when the battery unit is detached from the main body case, the center of gravity is located between the pair of leg portions that are farthest from each other in the second leg group.

The position of the center of gravity of the case where the battery unit is attached to the main body case may be substantially determined by the position of the center of gravity of the main body case, the position of the center of gravity of the electric blower, the position of the center of gravity of the dust collecting device, and the position of the center of gravity of the battery unit, and the position of the center of gravity of the case where the battery unit is detached from the main body case may be substantially determined by the position of the center of gravity of the main body case, the position of the center of gravity of the electric blower, and the position of the center of gravity of the dust collecting device.

The dust collecting device may be heavier than the electric blower, the battery unit may be heavier than the dust collecting device, the dust collecting device may be disposed in a front half of the main body case, and the electric blower and the battery unit may be disposed in a rear half of the main body case.

The leg portion may be in line contact or surface contact with the horizontal line.

The leg portion may have an elastic member in contact with the horizontal surface.

At least one of the leg portions may be disposed in the battery portion.

At least one of the legs may be disposed in the dust collecting device.

The invention has the following effects: according to the utility model discloses an electric vacuum cleaner can avoid the change of the focus position that arouses by the loading and unloading of battery and overturn on horizontal planes such as floor, operation platform, can stably stand alone.

Drawings

Fig. 1 is a perspective view of a hand-held electric vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is a side view of a cleaner main body of an electric cleaner according to an embodiment of the present invention.

Fig. 3 is a side view of a cleaner main body of an electric cleaner according to an embodiment of the present invention.

Fig. 4 is a bottom view of a cleaner main body of an electric cleaner according to an embodiment of the present invention.

Fig. 5 is a schematic side view of another example of the cleaner body according to the embodiment of the present invention.

Fig. 6 is a schematic side view of another example of the cleaner body according to the embodiment of the present invention.

Description of the reference numerals

1 … electric vacuum cleaner, 2a … cleaner main body, 3 … extension tube, 5 … suction inlet body, 11 … handle part, 12 … main body shell, 12a … front part, 12b … central part, 12c … rear part, 13 … electric blower, 15 … suction tube, 16 … separation dust collection part, 17 … main body control part, 18 … secondary battery, 19 … suction inlet, 21 … control circuit board, 22 … input part, 22a … operation start switch, 22b … operation stop switch, 25 … exhaust outlet, 31, 41, 42, 43, 44 … leg part, 48a … first leg group, 49a … second leg group, 51 … elastic component.

Detailed Description

Hereinafter, an embodiment of the hand-held electric vacuum cleaner of the present invention will be described with reference to fig. 1 to 6. In the drawings, the same or corresponding components are denoted by the same reference numerals.

Fig. 1 is a perspective view of a hand-held electric vacuum cleaner according to an embodiment of the present invention.

As shown in fig. 1, the electric vacuum cleaner 1 of the present embodiment is, for example, a stick type and is hand-held. The electric vacuum cleaner 1 includes: a cleaner main body 2 that can be handled by hand; an extension pipe 3 which can be attached to and detached from the cleaner body 2; and a suction port body 5 that is attachable to and detachable from the extension pipe 3.

In addition, fig. 1 corresponds to a view of the electric vacuum cleaner 1 as viewed from diagonally the left front of the user in a state where the user holds the electric vacuum cleaner 1.

The electric vacuum cleaner 1 may be used as a hand-held electric vacuum cleaner with only the vacuum cleaner main body 2 from which the extension pipe 3 and the suction port body 5 are removed. That is, the cleaner body 2 may be used alone as a handheld electric cleaner. In addition, the electric vacuum cleaner 1 may be used by attaching a nozzle that is extremely shorter than the extension pipe 3 instead of the extension pipe 3 and the suction port body 5.

The cleaner body 2 includes: a main body case 12 having a grip portion 11; an electric blower 13 housed in the main body case 12 and generating suction negative pressure; a suction pipe 15 fluidly connected to a suction side of the electric blower 13; a separation dust collecting section 16 (dust collecting device) detachably attached to the main body case 12; a main body control unit 17 that mainly controls the electric blower 13; a secondary battery 18 (battery unit) detachably mounted to the main body case 12; and a holding mechanism (not shown) for detachably holding the dust separating and collecting unit 16 in the main body case 12.

The cleaner body 2 drives the electric blower 13 by the electric power stored in the secondary battery 18, generates a negative pressure by driving the electric blower 13, and causes the generated suction negative pressure to act on the separation dust collecting unit 16. The suction negative pressure applied to the dust separating collecting part 16 is applied to the suction pipe 15, the extension pipe 3, and the suction port body 5 in this order. The suction negative pressure reaching the suction port body 5 acts on the suction port 19 of the suction port body 5. The suction negative pressure acting on suction port 19 sucks air containing dust (hereinafter referred to as "dust-containing air") from the floor into suction port 19. The air containing dust sucked into the suction port 19 flows into the dust separating and collecting part 16 through the suction port body 5, the extension pipe 3, and the suction pipe 15. The separation dust collecting unit 16 separates dust from the dust-containing air sucked by the suction negative pressure, collects and accumulates the separated dust, and sends the air from which the dust is separated to the electric blower 13. The electric blower 13 discharges the air from which the dust is separated to the outside of the main body case 12.

The electric vacuum cleaner 1 and the vacuum cleaner body 2 are used in various postures by a user holding the vacuum cleaner body 2. Therefore, in fig. 1, a plan view (a top view) is taken as viewed from the direction of the solid arrow P, and a bottom view is taken as viewed from the opposite direction of the solid arrow P. In fig. 1, a front view (front view) is taken when viewed from the direction of the solid arrow F, and a rear view is taken when viewed from the opposite direction of the solid arrow F. In fig. 1, the left side view is taken as viewed from the direction of the solid arrow L, and the right side view is taken as viewed from the opposite direction of the solid arrow L. That is, when the user holds the vacuum cleaner 1 in a posture in which the extension pipe 3 horizontally protrudes toward the front of the user, the front, rear, up, down, and left and right of the vacuum cleaner 1 correspond to the front, rear, up, down, and left and right of the user.

The main body case 12 accommodates the electric blower 13 and a control circuit board 21 on which the main body control unit 17 is mounted.

The main body case 12 includes: a columnar front portion 12a disposed on an extension line of the extension pipe 3 and extending along the extension line of the extension pipe 3; a central portion 12b hanging obliquely downward and rearward from the front portion 12 a; a cylindrical rear portion 12c extending rearward from a lower half of a rear surface of the central portion 12 b; and a handle portion 11 extending rearward from the upper half of the rear surface of the central portion 12b, curved in an arc shape, and connected to the rear end of the upper surface of the rear portion 12 c.

The main body case 12 is provided with a charging plug for guiding charging power to the secondary battery 18. The charging plug is connected to the secondary battery 18 via a charging circuit.

The main body case 12 includes an input unit 22, and the input unit 22 is disposed in a range where a user holding the grip unit 11 moves his or her finger.

The front portion 12a cooperates with the central portion 12b to detachably hold the dust collecting part 16. The separation dust collection unit 16 has a cylindrical external appearance as a whole. The front portion 12a and the central portion 12b hold the dust separating and collecting portion 16 such that a center line C of the dust separating and collecting portion 16, in other words, a longitudinal direction is parallel to an extension line of a center line of the extension pipe 3. In a state where the extension pipe 3 and the dust separating collecting part 16 are attached to the main body case 12, an extension of a center line of the extension pipe 3 and a center line C of the dust separating collecting part 16 are arranged on a central longitudinal section that substantially equally divides the left and right of the main body case 12. That is, the elongated front portion 12a and the cylindrical dust separating and collecting portion 16 are arranged in parallel with each other so that the center lines thereof are parallel to each other.

A suction pipe 15 is housed in the front portion 12a of the main body case 12, and the suction pipe 15 is disposed on an extension line in the longitudinal direction of the extension pipe 3, that is, the extension direction, and extends in a tubular shape.

The rear portion 12c of the main body case 12 accommodates the electric blower 13 and the control circuit board 21. The rear portion 12c has an exhaust port 25 through which the exhaust air of the electric blower 13 is discharged from the inside of the main body case 12.

The central portion 12b of the main body case 12 is held so as to cover a part of the rear end portion of the dust separating and collecting portion 16 arranged in parallel to the front portion 12a, and accommodates an air passage (not shown) for connecting the dust separating and collecting portion 16 and the electric blower 13. The central portion 12b is connected to a rear end portion of the front portion 12a extending substantially linearly, and bulges obliquely downward and rearward of the main body case 12. The central portion 12b has an appearance inclined downward toward the rear of the main body case 12.

The suction pipe 15 is accommodated in the front portion 12a of the main body casing 12 and supported by the main body casing 12. In a state where the dust separating and collecting part 16 is attached to the main body case 12, the suction pipe 15 is arranged in parallel with the dust separating and collecting part 16. The suction pipe 15 is a straight pipe extending straight without being substantially bent. The direction along the center line of the suction pipe 15, the extending direction of the suction pipe 15, and the longitudinal direction of the suction pipe 15 are substantially the same, and substantially coincide with the front-rear direction of the main body casing 12.

The suction pipe 15 has a joint structure to which the extension pipe 3 can be attached and detached. The joint structure is provided at the open end of the suction pipe 15. The suction pipe 15 is a fluid inlet of the cleaner body 2, and is also a joint for fluidly connecting the extension pipe 3 to the dust separation collecting part 16. When the extension pipe 3 is detached from the cleaner body 2, the suction pipe 15 functions as a suction port when the cleaner body 2 is used alone as a handheld electric cleaner. The tube front end of the suction pipe 15 is open to the front of the cleaner body 2.

The rear end of the suction pipe 15 has a second opening connected to the separate dust collecting part 16. The second opening opens toward the radially outer side of the suction pipe 15 and toward the separate dust collection part 16. The second opening opens toward the lower side of the main body case 12. The second opening is provided in the bottom surface of the front portion 12a of the main body case 12. In a state where the dust separating and collecting part 16 is attached to the main body case 12, the bottom surface of the front part 12a approaches and follows the dust separating and collecting part 16. Thus, the second opening is fluidly connected with the separate dust collecting part 16.

The dust separating and collecting unit 16 is disposed in an L-shaped housing space formed between the front portion 12a of the main body case 12 and the central portion 12b of the main body case 12. The separation dust collecting unit 16 separates, collects, and accumulates dust from the dust-containing air flowing into the cleaner body 2, and sends the clean air from which the dust is removed to the electric blower 13. The separation dust collecting unit 16 is a centrifugal separation system that centrifugally separates dust and air by using the difference in mass between the dust and the air. A filter of a filter separation system for filtering and collecting dust from the dust-containing air may be provided downstream of the separation dust collecting unit 16.

The dust separating and collecting unit 16 extends in a cylindrical shape along the front-rear direction of the main body case 12. In other words, the dust separating and collecting unit 16 is a cylindrical container having a center line C extending in the front-rear direction of the main body case 12. The direction along the center line C of the dust separating collecting part 16, the extending direction of the dust separating collecting part 16, and the longitudinal direction of the dust separating collecting part 16 are substantially the same, and substantially coincide with the front-rear direction of the main body housing 12. Thus, the center line C of the dust separating and collecting part 16 is substantially parallel to the center line of the suction pipe 15. The dust separating and collecting unit 16 is arranged in parallel with the suction pipe 15. That is, the longitudinal direction of the dust separating and collecting part 16 follows the longitudinal direction of the suction pipe 15. The diameter of the dust separating collecting part 16 is larger than the diameter of the suction pipe 15, and the dust separating collecting part 16 protrudes in the lateral direction (width direction) of the cleaner body 2 than the suction pipe 15 and the front part 12a of the body case 12. The left-right direction (width direction) of the cleaner body 2 corresponds to a normal direction of a virtual plane substantially including the center line C of the cylindrical dust separating collecting part 16 and the center line of the suction pipe 15, or a normal direction of a virtual plane substantially passing through the center line C of the cylindrical dust separating collecting part 16 and the center line of the suction pipe 15. The virtual plane corresponds to a central longitudinal section of the cleaner body 2.

The holding mechanism includes a first mechanism for detachably connecting one end of the dust collecting part 16 to the main body case 12, and a second mechanism for detachably connecting the other end of the dust collecting part 16 to the main body case 12.

The first mechanism is a locking mechanism for coupling the dust collecting part 16 and the main body case 12 by hooking a protrusion provided on the main body case 12 to a recess provided on the dust collecting part 16. The concave portion and the convex portion of the first mechanism are hooked or released by a change in the relative position of the dust collecting separation portion 16 and the main body case 12.

The convex portion of the first mechanism is provided at the front end portion of the bottom surface of the front portion 12a of the main body case 12. The concave portion of the first mechanism is disposed at a position where the convex portion fits to one end of the dust separating and collecting portion 16.

The second mechanism is a locking mechanism for coupling the dust collecting part 16 and the main body case 12 by hooking a concave portion provided in the main body case 12 to a convex portion provided in the dust collecting part 16. The second mechanism is different from the first mechanism and includes an operation piece capable of separating the convex portion from the concave portion while maintaining the relative position of the separation dust collection unit 16 and the main body case 12. The operation piece is provided in the separation dust collecting section 16, and the convex portion of the second mechanism is integrated with the operation piece.

The concave portion of the second mechanism is provided at the bottom of the central portion 12b of the main body case 12, that is, at a position farthest from the suction pipe 15 in the radial direction of the suction pipe 15. The convex portion of the second mechanism is disposed at the other end of the dust separating and collecting portion 16 and at a position fitting the concave portion. The concave portion of the first mechanism and the convex portion of the second mechanism are provided in the dust separating and collecting unit 16, and are arranged substantially symmetrically with respect to the center in the longitudinal direction and the center in the short-side direction of the dust separating and collecting unit 16. The convex portion of the second mechanism is disposed at the farthest position in the dust separating and collecting unit 16 when viewed from the concave portion of the first mechanism.

The operation piece is a part of various mechanisms that can perform operations involving mechanical movements including sliding and swinging, and converts the movements involving the operations into operations for separating the convex portion from the concave portion. For example, the user can slide the operation piece to separate the convex portion of the second mechanism from the concave portion. The operation piece moves the convex portion of the second mechanism to a position where the convex portion is hooked to the concave portion when the operation piece is not operated by the user.

When the dust separating collecting part 16 is attached to the main body case 12, the first mechanism engages the convex portion with the concave portion to connect the dust separating collecting part 16 with the main body case 12, and the second mechanism engages the convex portion with the concave portion to connect the dust separating collecting part 16 with the main body case 12. When the operation piece is operated to disengage the convex portion of the second mechanism from the concave portion of the second mechanism, the lock of the second mechanism is released. At this time, the state in which the convex portion of the first mechanism is hooked in the concave portion is maintained. Therefore, in a state where the lock of the second mechanism is released, the user moves the other end of the dust separating collecting part 16 away from the main body case 12 with the first mechanism as a fulcrum. Thus, the dust separating collecting part 16 is separated from the main body case 12, the convex part of the first mechanism finally comes out of the concave part, and the lock of the first mechanism is released.

When the dust collecting part 16 is detached from the main body case 12, first, the convex part of the first mechanism is hooked on the concave part. In a state where the first mechanism is locked, the user brings the other end of the dust separating collecting part 16 close to the main body case 12 with the first mechanism as a fulcrum. In this way, the dust separating and collecting unit 16 is attached to the main body case 12, and the convex portion of the second mechanism is finally hooked to the concave portion, and the second mechanism is also locked.

Further, the dust separating and collecting unit 16 of the present embodiment is attached to and detached from the main body case 12 while drawing an arc orbit, but may be attached to and detached from the suction pipe 15 while drawing a linear orbit in the radial direction. In this case, it is preferable that the first mechanism and the second mechanism are locked or unlocked substantially simultaneously. The moving direction of the dust collecting separating unit 16 when the dust collecting separating unit 16 is attached to and detached from the main body case 12 may be a direction intersecting the longitudinal direction of the suction pipe 15. Therefore, when the dust separating and collecting part 16 is attached to the main body case 12, the dust separating and collecting part 16 only needs to be moved in a direction approaching the suction pipe 15 in the radial direction of the suction pipe 15, and when the dust separating and collecting part 16 is detached from the main body case 12, the dust separating and collecting part 16 only needs to be moved in a direction separating from the suction pipe 15 in the radial direction of the suction pipe 15.

The central portion 12b of the main body case 12 includes a connection port fluidly connected to the exhaust side of the dust separation collection unit 16 and a separation unit downstream air passage pipe fluidly connecting the connection port to the electric blower 13. The central portion 12b includes a portion sandwiched between the separate dust collecting part 16 and the rear portion 12c of the main body case 12. The connection port and the duct pipe downstream of the separation portion are disposed at this portion.

The connection port is disposed at a position facing the front surface of the center portion 12 b. In a state where the dust separating and collecting unit 16 is attached to the main body case 12, the connection port faces the rear end surface of the dust separating and collecting unit 16. Therefore, in a state where the dust separating and collecting unit 16 is attached to the main body case 12, the connection port is disposed on an extension of the center line C of the dust separating and collecting unit 16.

The suction side of the electric blower 13 is connected to the dust separating and collecting unit 16 via a connection port and an air passage pipe downstream of the separating unit. The electric blower 13 sucks air from the dust separating and collecting unit 16 to generate a suction negative pressure. The electric blower 13 includes an impeller, a motor that generates rotational driving force of the impeller, and a rotating shaft that transmits the rotational driving force from the motor to the impeller.

The impeller is, for example, a turbo fan and includes a plurality of blades. Each blade has a twisted shape that gradually rises from the center of the conical hub toward the outer edge of the hub in the radial direction of the hub. In other words, each blade is a so-called three-dimensional wing in which the airfoil profile (airfoil) or wing section (wing section) changes from the leading edge to the trailing edge. The impeller is covered by a housing having a suction port.

The electric blower 13 has a cylindrical or columnar shape centered on the rotation axis. The rotation shaft is housed in the main body case 12 with its center line directed in the front-rear direction of the main body case 12 and with the suction port directed forward. The center line of the rotation shaft of the electric blower 13 is substantially arranged on the extension line of the separation dust collecting unit 16C.

The rear portion 12c of the main body case 12 accommodates a control circuit board 21 on which the main body control unit 17 is mounted. The control circuit board 21 is disposed directly behind the electric blower 13.

The main body control unit 17 includes a microprocessor and a storage device for storing various operation programs, parameters, and the like executed by the microprocessor. The storage device stores arguments, which are various settings relating to a plurality of operation modes set in advance. A plurality of operating modes are associated with the output of the electric blower 13. In each operation mode, the input value of the electric blower 13 is different from each other, and a target value of the current flowing through the electric blower 13 is set. Each operation mode is associated with an operation input received by the input unit 22. The main body control unit 17 selects an arbitrary operation mode corresponding to an operation input to the input unit 22 from a plurality of operation modes set in advance, reads the setting of the selected operation mode from the storage unit, and operates the electric blower 13 in accordance with the read setting of the operation mode.

In a state where the dust separating and collecting part 16 is attached to the main body case 12, the rear part 12C of the main body case 12 is arranged on an extension line of the center line C of the dust separating and collecting part 16.

The secondary battery 18 is also referred to as a storage battery, a rechargeable battery, and a rechargeable battery. The secondary battery 18 stores electric power consumed by the electric blower 13 and the main body control unit 17. The secondary battery 18 is detachably mounted on the bottom of the rear portion 12c of the main body case 12. The secondary battery 18 may be fixed in a non-detachable manner. By providing a plurality of secondary batteries 18, the detachable secondary batteries 18 can be replaced and used appropriately. When the charging rate of the secondary battery 18 attached to the electric vacuum cleaner 1 decreases, the electric vacuum cleaner 1 can continue to operate by replacing the secondary battery 18 with the charged secondary battery 18.

In addition, the electric vacuum cleaner 1 may use a primary battery as a power source instead of the secondary battery 18.

The handle portion 11 is integrally provided to the main body case 12. The grip portion 11 is a portion that a user holds with a hand in order to perform dust collection on the floor surface with the electric vacuum cleaner 1. Therefore, the grip 11 preferably has an appropriate shape that can be easily gripped by a human finger.

The handle portion 11 is erected between the front portion 12a and the rear portion 12c of the main body case 12. The handle portion 11 extends from the rear end of the front portion 12a in the extension direction of the extension pipe 3, and is curved in an arc shape so as to be continuous with the rear end of the rear portion 12 c. The continuous spaces between the grip 11 and the back surface of the central portion 12b of the main body case 12 and between the grip 11 and the top surface of the rear portion 12c of the main body case 12 penetrate in the left-right direction (width direction) of the main body case 12. Fingers of a user holding the grip portion 11, mainly four fingers including an index finger, a middle finger, a ring finger, and a little finger, can be arranged in the space.

The input unit 22 is provided on the top surface of the front end of the grip 11 so that a user holding the grip 11 can easily operate the input unit with his thumb.

The input unit 22 includes an operation start switch 22a that receives an operation start operation of the electric blower 13 and an operation stop switch 22b that receives an operation stop operation of the electric blower 13. The operation start switch 22a and the operation stop switch 22b are electrically connected to the main body control unit 17. The user of the electric vacuum cleaner 1 can select an operation mode of the electric blower 13 by operating the input unit 22. The operation start switch 22a also functions as a switch for switching the operation mode during the operation of the electric blower 13. In this case, the main body control portion 17 switches the operation mode in the order of strong → medium → weak → … … each time an operation signal is received from the operation start switch 22 a. The input unit 22 may include a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown) separately instead of the operation start switch 22 a.

Fig. 2 and 3 are side views of a cleaner main body of an electric cleaner according to an embodiment of the present invention.

Fig. 4 is a bottom view of a cleaner main body of an electric cleaner according to an embodiment of the present invention.

Fig. 2 is a side view of the cleaner body 2 with the secondary battery 18 attached thereto, and fig. 3 is a side view of the cleaner body 2 with the secondary battery 18 detached therefrom.

As shown in fig. 2 to 4, the cleaner body 2 of the present embodiment functions as a single body as a handheld electric cleaner.

However, when the cleaner body 2 is used as a single body as a handheld electric cleaner, the cleaner body 2 may be placed on the horizontal surface HS.

Therefore, in the vacuum cleaner main body 2 of the present embodiment, when the secondary battery 18 is attached to the main body case 12, two legs 31 of the three legs 31 are grounded, and one leg 31 is not grounded and stands on the horizontal surface HS (fig. 2) in the first posture. When the secondary battery 18 is detached from the main body case 12, the cleaner main body 2 is configured to allow two legs 31 including the leg 31 that is not grounded in the first posture, among the three legs 31, to be grounded, and to allow one leg 31 among the two legs 31 that are grounded in the first posture to be ungrounded, and to stand on the horizontal surface HS (fig. 3) in a free standing manner in the second posture.

Specifically, the cleaner body 2 of the present embodiment includes three leg portions 41, 42, and 43. The three leg portions 41, 42, 43 are arranged in order from the front side to the rear side of the cleaner body 2. That is, the three leg portions 41, 42, 43 are aligned in the longitudinal direction of the cleaner body 2 which is long in the front-rear direction. The three leg portions 41, 42, and 43 are convex strips extending in the left-right direction of the cleaner body 2 through the central longitudinal section of the cleaner body 2, and are protrusions. Each of the leg portions 41, 42, 43 has a contact portion in a semicircular arc shape protruding downward as a whole or at the most protruding portion. Thus, the legs 41, 42, 43 are in line contact with the horizontal plane HS. The legs 41, 43 may be in surface contact with the horizontal plane HS. The surface-contacting leg portions 41 and 43 further stabilize the free-standing posture of the cleaner body 2.

The legs 41, 42, 43 may also have elastic members 51 in contact with the horizontal plane HS. The elastic member 51 is sandwiched between the respective leg portions 41, 42, 43 and the horizontal surface HS, and prevents damage to the horizontal surface HS or slippage between the horizontal surface HS and the respective leg portions 41, 42, 43.

The respective legs 41, 42, 43 may not be a continuous strip. For example, the dust may be distributed separately on the right side and the left side of the cleaner body 2. When the cleaner body 2 is placed on a hard horizontal surface HS, the three leg portions 41, 42, and 43 contact the horizontal surface HS in a linear shape extending in the left-right direction of the cleaner body 2. The legs 41, 42, and 43 may not protrude from the surroundings in a range in which the legs can stand alone in the first posture and stand alone in the second posture, and may be, for example, portions such as edge portions of the surface.

The foremost leg 41 is provided in the separate dust collection unit 16, but may be provided in the main body case 12. The rearmost leg 43 is provided on the secondary battery 18, but may be provided on the main body case 12. The leg portion 42 is provided on the main body case 12 between the two leg portions 41 and 43 in the front-rear direction of the cleaner main body 2. In addition, two or more leg portions 31 may be provided in the secondary battery 18. The secondary battery 18 is preferably provided with at least one leg portion 43.

In the vacuum cleaner body 2 of the present embodiment, when the secondary battery 18 is mounted to the body case 12 (fig. 2), the central leg portion 42 and the rear leg portion 43 can be grounded and can stand on the horizontal surface HS.

Here, for the sake of simplicity of explanation, as shown in fig. 2, the first posture in which the central leg 42 and the rear leg 43 are grounded and are free-standing on the horizontal plane HS is referred to as a "battery-mounted free-standing posture". The battery-mounted autonomous vacuum cleaner main body 2 is autonomously standing on the horizontal plane HS by the first leg group 48 including two legs 42 and 43 of the three legs 41, 42, and 43 and excluding one leg 41. In other words, the battery-mounted autonomous vacuum cleaner main body 2 has two legs 42 and 43 of the three legs 41, 42, and 43 grounded and one leg 41 not grounded and standing on a horizontal surface.

The gravity center G1 of the cleaner body 2 to which the secondary battery 18 is attached is located between the central leg 42 and the rear leg 43.

In the vacuum cleaner body 2 according to the present embodiment, when the secondary battery 18 is detached from the main body case 12, the front leg 41 and the center leg 42 can be grounded and can stand on the horizontal surface HS.

Here, for the sake of simplicity of explanation, as shown in fig. 3, the second posture in which the front leg 41 and the center leg 42 are grounded and are free standing on the horizontal plane HS is referred to as a "battery-off free standing posture". The cleaner body 2 in which the battery is out of the free-standing posture is free-standing on the horizontal plane HS by the second leg group 49 including two legs 41, 42 of the three legs 41, 42, 43 and excluding the one leg 43. In other words, the cleaner body 2 in which the battery is out of the free-standing posture has two legs 41, 42 including the leg 41 that is not grounded in the battery-attached free-standing posture, of the three legs 41, 42, 43 grounded, and has one leg 43 of the two legs 42, 43 that is grounded in the battery-attached free-standing posture, not grounded, and standing on a horizontal plane.

The gravity center G2 of the cleaner body 2 from which the secondary battery 18 is detached is located between the front leg 41 and the center leg 42.

Therefore, the cleaner body 2 can stably stand alone without falling over on the horizontal surface HS, regardless of whether the secondary battery 18 is attached to the main body case 12 or the secondary battery 18 is detached from the main body case 12.

The term "capable of standing stably by itself" refers to a standing manner in which, like the leg portion 31 of the present embodiment, only a portion intended to be placed in contact with the horizontal surface HS is brought into contact with the horizontal surface HS to stand by itself, and the posture of any arbitrary portion of the outer surface of the cleaner body 2 is not easily changed by a slight external force by appropriately bringing the portion into contact with the horizontal surface HS.

The three leg portions 31 include leg portions 42 belonging to both the first leg group 48 and the second leg group 49. As described above, the leg portions 42 belonging to both the first leg group 48 and the second leg group 49 are referred to as common leg portions. The common leg portion is the leg portion 31 which is in contact with the horizontal plane HS in any of the battery-attached free-standing posture and the battery-detached free-standing posture.

Fig. 5 and 6 are schematic side views of other examples of the cleaner body according to the embodiment of the present invention.

Fig. 5 is a side view of the cleaner body 2A with the secondary battery 18 attached thereto, and fig. 3 is a side view of the cleaner body 2A with the secondary battery 18 detached therefrom.

As shown in fig. 5 and 6, in the vacuum cleaner main body 2A of the present embodiment, when the secondary battery 18 is attached to the main body case 12, two of the four legs 31 are grounded, and the two legs 31 are not grounded and stand on the horizontal plane in the first posture (fig. 5). When the secondary battery 18 is detached from the main body case 12, the cleaner main body 2A grounds the two legs 31 that are not grounded in the first posture out of the four legs 31, and leaves the two legs 31 that are grounded in the first posture ungrounded and stands on a horizontal surface in the second posture (fig. 6).

Specifically, the cleaner body 2A of the present embodiment includes four leg portions 41, 42, 43, and 44. The four leg portions 41, 42, 43, 44 are arranged in order from the front side to the rear side of the cleaner body 2A. The four leg portions 41, 42, 43, and 44 are convex bars extending in the left-right direction of the cleaner body 2A through the central longitudinal section of the cleaner body 2A, and are protrusions. Each of the leg portions 41, 42, 43, 44 has a contact portion in the shape of a semicircular arc protruding downward as a whole or at the most protruding portion. Thus, the legs 41, 42, 43, 44 are in line contact with the horizontal plane HS. The legs 41, 42, 43, 44 may also be in surface contact with the horizontal plane HS. The surface-contacting legs 41, 42, 43, and 44 further stabilize the free-standing posture of the cleaner body 2A.

The legs 41, 42, 43, 44 may also have elastic members 51 in contact with the horizontal plane HS. The elastic member 51 is sandwiched between each of the leg portions 41, 42, 43, 44 and the horizontal surface HS, and prevents damage to the horizontal surface HS or slippage between the horizontal surface HS and each of the leg portions 41, 42, 43, 44.

The respective legs 41, 42, 43, 44 may not be a continuous strip. For example, the dust may be distributed separately on the right side and the left side of the cleaner body 2. The four leg portions 41, 42, 43, and 44 contact the horizontal surface HS in a straight line shape extending in the left-right direction of the cleaner body 2 when the cleaner body 2 is placed on the hard horizontal surface HS.

In the vacuum cleaner body 2A of the present embodiment, when the secondary battery 18 is attached to the body case 12 (fig. 5), the third leg portion 42 and the rearmost leg portion 44 from the front can be grounded and can stand on the horizontal surface HS by themselves.

Here, for the sake of simplicity of explanation, as shown in fig. 5, the first posture in which the 3 rd leg 43 from the front and the rearmost leg 44 are grounded and are free-standing on the horizontal plane HS will be referred to as a "battery-mounted free-standing posture". The battery-mounted autonomous-standing-posture cleaner main body 2A is autonomous-standing on a horizontal surface HS by a first leg group 48A including two legs 43, 44 of the four legs 41, 42, 43, 44 and excluding the two legs 41, 42. In other words, the cleaner body 2A in the battery-mounted free-standing posture has two legs 43, 44 of the four legs 41, 42, 43, 44 grounded and the two legs 41, 42 not grounded and standing on a horizontal plane.

The gravity center G1 of the cleaner main body 2A to which the secondary battery 18 is attached is located between the 3 rd leg 43 and the rearmost leg 44 from the front.

In the cleaner body 2A of the present embodiment, when the secondary battery 18 is detached from the body case 12, the front-most leg 41 and the 2 nd leg 42 can be grounded and can stand on the horizontal surface HS.

Here, for the sake of simplicity of explanation, as shown in fig. 6, the second posture in which the front-most leg 41 and the 2 nd leg 42 are grounded and are standing on the horizontal plane HS by themselves is referred to as "the battery-off-standing posture". The cleaner body 2A in which the battery is out of the free-standing posture is free-standing on the horizontal surface HS by the second leg group 49A including two legs 41, 42 of the four legs 41, 42, 43, 44 and excluding the two legs 43, 44. In other words, the cleaner body 2 in which the battery is out of the free-standing posture has the non-grounded leg 41, 42 in the battery-attached free-standing posture, of the four legs 41, 42, 43, 44, grounded, and has the two legs 43, 44 grounded in the battery-attached free-standing posture, grounded, and free-standing on the horizontal plane.

The gravity center G2 of the cleaner body 2A from which the secondary battery 18 is detached is located between the front-most leg 41 and the 2 nd leg 42 from the front.

Therefore, the cleaner body 2A can stably stand alone without falling over on the horizontal plane HS, regardless of whether the secondary battery 18 is attached to the main body case 12 or the secondary battery 18 is detached from the main body case 12.

Further, the cleaner body 2 including the three legs 41, 42, 43 can stably stand in the battery-attached free-standing posture even if the plurality of legs 31 are present between the two legs 42, 43 at the center and the rear, and can stably stand in the battery-detached free-standing posture even if the plurality of legs 31 are present between the two legs 41, 42 at the front and the center.

Further, the cleaner body 2A including the four leg portions 41, 42, 43, 44 can stably stand in the battery-attached free-standing posture even if the plurality of leg portions 31 are present between the 3 rd and the last two leg portions 43, 44 from the front, and can stably stand in the battery-detached free-standing posture even if the plurality of leg portions 31 are present between the front row and the 2 nd two leg portions 41, 42 from the front.

That is, as shown in fig. 3 to 6, the cleaner main bodies 2 and 2A according to the present embodiment stand on the horizontal surface in the battery-attached free-standing posture with the first leg group 48 or 48A including at least two legs 31 out of the three or more legs 31 grounded and at least one leg 31 not grounded (fig. 2 and 5). When the battery unit 18 is detached from the main body case 12, the cleaner main body 2 grounds the second leg group 49, 49A including at least two of the three or more leg portions 31 including the leg portion 31 that is not grounded in the battery-attached free-standing posture, and at least one of the leg portions 31 of the first leg group 48, 48A is not grounded to stand on the horizontal plane in the battery-detached free-standing posture (fig. 3, 6).

The first leg group 48 and the second leg group 49 in fig. 2 to 4 include a common leg (leg 42) belonging to both leg groups 48 and 49, while the first leg group 48A and the second leg group 49A in fig. 5 to 6 do not have a common leg belonging to both leg groups 48A and 49A. That is, the first leg groups 48 and 48A and the second leg groups 49 and 49A may have an overlap (common leg) or may not have an overlap.

In addition, the vacuum cleaner main bodies 2 and 2A in the battery-attached free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G1 is located between the pair of leg portions 31 farthest from each other in the first leg group 48. That is, the vacuum cleaner main body 2 in the battery-attached free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G1 is located between the pair of legs 42 and 43 that are farthest from each other in the first leg group 48. The battery-attached vacuum cleaner main body 2A in the free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G1 is located between the pair of legs 43 and 44 that are farthest from each other in the first leg group 48.

In addition, the vacuum cleaner bodies 2 and 2A in which the battery is out of the free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G2 is positioned between the pair of leg portions 31 that are farthest from each other in the second leg group 49. That is, the cleaner body 2 having the battery out of the free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G2 is located between the pair of legs 41 and 42 farthest from each other in the second leg group 49. The cleaner body 2A having the battery out of the free-standing posture can be reliably and stably free-standing by distributing the weight so that the center of gravity G2 is located between the pair of legs 41 and 42 farthest from each other in the second leg group 49.

The position of the center of gravity when the secondary battery 18 is attached to the main body case 12 is the position of the center of gravity of the cleaner main body 2, 2A in the battery-attached free-standing posture. The position of the center of gravity of the vacuum cleaner main bodies 2 and 2A in the battery-attached free-standing posture is substantially determined by the position of the center of gravity of the main body case 12, the position of the center of gravity of the electric blower 13, the position of the center of gravity of the dust collecting separating unit 16, and the position of the center of gravity of the secondary battery 18.

The position of the center of gravity when the secondary battery 18 is out of the main body case 12 is a position where the battery is out of the center of gravity of the vacuum cleaner main body 2, 2A in the free-standing posture. The position of the center of gravity of the cleaner main bodies 2 and 2A in which the battery is out of the free-standing posture is substantially determined by the position of the center of gravity of the main body case 12, the position of the center of gravity of the electric blower 13, and the position of the center of gravity of the dust collecting separating unit 16.

Therefore, by specifying the relationship among the position of the center of gravity of the main body case 12, the position of the center of gravity of the electric blower 13, the position of the center of gravity of the dust collecting separation section 16, and the position of the center of gravity of the secondary battery 18, the position of the center of gravity of the vacuum cleaner main body 2, 2A in which the battery is attached in the free-standing posture can be easily set to a position in which the vacuum cleaner main body 2, 2A can stably stand on its own by the first leg group 48, and the position of the center of gravity of the vacuum cleaner main body 2, 2A in which the battery is detached from the free-standing posture can be easily set to a position in which the vacuum cleaner main body 2, 2A can stably stand on its own by the second leg group 49.

The mass of the dust separating and collecting part 16 is heavier than the mass of the electric blower 13, and the mass of the secondary battery 18 is heavier than the mass of the dust separating and collecting part 16. In the vacuum cleaner main body 2 of the present embodiment, as shown in fig. 2 and 3, the dust separating and collecting unit 16 is disposed in the front half of the main body case 12, and the electric blower 13 and the secondary battery 18 are disposed in the rear half of the main body case 12. The relationship between the mass of the device and the arrangement of the device shortens the air passage length in the cleaner main bodies 2 and 2A to improve the suction efficiency, contributes to downsizing of the cleaner main body 2, and improves the free-standing stability of the cleaner main bodies 2 and 2A in the battery-attached free-standing posture and the battery-detached free-standing posture.

The position of the center of gravity when the secondary battery 18 is attached to the main body case 12 may be within a range in which the posture of the autonomous vacuum cleaner main bodies 2 and 2A does not change due to a slight external force, and may not be between the pair of leg portions 31 and 31 that are farthest from each other in the first leg groups 48 and 48A. The position of the center of gravity when the secondary battery 18 is out of the main body case 12 may be within a range in which the posture of the autonomous vacuum cleaner main body 2 or 2A does not change due to a slight external force, and may not be between the pair of leg portions 31 or 31 that are farthest from each other in the second leg groups 49 or 49A.

As described above, the vacuum cleaner bodies 2 and 2A as the hand-held vacuum cleaners of the present embodiment are configured such that, when the secondary battery 18 is attached to the main body case 12, the first leg groups 48 and 48A are grounded, and at least one of the leg portions 31 is not grounded and is free-standing on the horizontal surface in the first posture (battery attached free-standing posture), and when the secondary battery 18 is detached from the main body case 12, the second leg groups 49 and 49A are grounded, and at least one of the leg portions 31 of the first leg groups 48 and 48A is not grounded and is free-standing on the horizontal surface in the second posture (battery detached free-standing posture). Therefore, the cleaner main bodies 2 and 2A can maintain a stable free-standing posture following the change in the center of gravity accompanying the attachment and detachment of the secondary battery 18.

The cleaner body 2 of the present embodiment includes the leg portion 42 as a common leg portion belonging to both the first leg group 48 and the second leg group 49. Therefore, the cleaner body 2 can stably stand alone in any of the first posture and the second posture by providing at least three leg portions 41, 42, and 43.

The cleaner bodies 2 and 2A of the present embodiment are weight-distributed as follows: the center of gravity is located between the pair of farthest leg portions 31 in the first leg group 48 in the case where the secondary battery 18 is mounted to the main body case 12, and is located between the pair of farthest leg portions 31 in the second leg group 49 in the case where the secondary battery 18 is detached from the main body case 12. Therefore, the cleaner main bodies 2 and 2A can stably stand alone in either the first posture or the second posture.

The cleaner main bodies 2 and 2A of the present embodiment include: a position of the center of gravity in the first posture substantially determined by the position of the center of gravity of the main body case 12, the position of the center of gravity of the electric blower 13, the position of the center of gravity of the dust collecting part 16, and the position of the center of gravity of the secondary battery 18; and a position of the center of gravity of the second posture substantially determined by the position of the center of gravity of the main body case 12, the position of the center of gravity of the electric blower 13, and the position of the center of gravity of the dust separation collection part 16. Therefore, the cleaner main bodies 2 and 2A can easily set the center of gravity position of the first posture and the center of gravity position of the second posture so that the user can stably stand alone in either of the first posture and the second posture.

The cleaner main bodies 2 and 2A of the present embodiment are provided with a dust separating and collecting unit 16 heavier than the electric blower 13 and a secondary battery 18 heavier than the dust separating and collecting unit 16. The dust separating and collecting unit 16 is disposed in the front half of the main body case 12, and the electric blower 13 and the secondary battery 18 are disposed in the rear half of the main body case 12. Therefore, the vacuum cleaner bodies 2 and 2A can improve suction efficiency by shortening the air passage length, and the vacuum cleaner bodies 2 and 2A can be downsized to improve the free-standing stability in the first posture and the second posture.

The cleaner bodies 2 and 2A of the present embodiment are provided with leg portions 31 that come into line contact or surface contact with the horizontal surface HS. Therefore, the cleaner main bodies 2 and 2A can easily stand alone with the leg portion 31 grounded on the horizontal plane HS.

The cleaner bodies 2 and 2A of the present embodiment are provided with elastic members 51 that contact the horizontal surface. Therefore, the cleaner bodies 2 and 2A can be reliably stood on their own and still without sliding on the horizontal surface HS while preventing damage to the horizontal surface HS.

Therefore, according to the vacuum cleaner bodies 2 and 2A of the present invention, the vacuum cleaner body can stably stand alone without falling over on the horizontal surface HS such as the floor or the work table due to the change in the center of gravity position caused by attachment and detachment of the secondary battery 18.

While several embodiments of the present invention have been described above, these embodiments are provided as examples and are not intended to limit the scope of the present invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims (9)

1. An electric vacuum cleaner is provided with a cleaner main body, and the cleaner main body is provided with:

a main body case;

an electric blower housed in the main body case;

a dust collecting device connected to a suction side of the electric blower; and

a battery unit detachably attached to the main body case and storing power consumed for driving the electric blower; it is characterized in that the preparation method is characterized in that,

the main body of the dust collector is provided with more than three leg parts,

grounding a first leg group including at least two of the three or more legs and leaving at least one leg ungrounded to stand alone on a horizontal plane in a first posture with the battery part attached to the main body case; when the battery unit is detached from the main body case, a second leg group including at least two legs, among the three or more legs, including the leg that is not grounded in the first posture is grounded, and at least one leg of the first leg group is not grounded and stands on a horizontal plane in a second posture.

2. The electric vacuum cleaner of claim 1,

the three or more leg portions have a common leg portion that belongs to both the first leg group and the second leg group.

3. The electric vacuum cleaner of claim 1,

the weight distribution was performed as follows: when the battery unit is attached to the main body case, the center of gravity is located between the pair of leg portions that are farthest from each other in the first leg group, and when the battery unit is detached from the main body case, the center of gravity is located between the pair of leg portions that are farthest from each other in the second leg group.

4. The electric vacuum cleaner of claim 3,

the position of the center of gravity of the battery unit when the battery unit is attached to the main body case is substantially determined by the position of the center of gravity of the main body case, the position of the center of gravity of the electric blower, the position of the center of gravity of the dust collecting device, and the position of the center of gravity of the battery unit,

the position of the center of gravity of the battery unit when the battery unit is separated from the main body case is substantially determined by the position of the center of gravity of the main body case, the position of the center of gravity of the electric blower, and the position of the center of gravity of the dust collecting device.

5. The electric vacuum cleaner of claim 4,

the mass of the dust collecting device is heavier than the mass of the electric blower, the mass of the battery part is heavier than the mass of the dust collecting device,

the dust collecting device is arranged on the front half part of the main body shell,

the electric blower and the battery unit are disposed in a rear half of the main body case.

6. The electric vacuum cleaner of claim 1,

the leg part is in surface contact with the horizontal surface line.

7. The electric vacuum cleaner of claim 1,

the leg portion has an elastic member in contact with the horizontal surface.

8. The electric vacuum cleaner according to any one of claims 1 to 3,

at least one of the leg portions is disposed at the battery portion.

9. The electric vacuum cleaner according to any one of claims 1 to 3,

at least one of the legs is disposed on the dust collecting device.

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