JP2009078081A - Electric vacuum cleaner and suction port thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor brush capable of cleaning a narrow space and with high usability. <P>SOLUTION: The height of the case body 11 is smaller than its length and the width. A front suction port 15h is provided on the front of the case body 11 and the bottom suction port 15f under the case body 11 can be opened or closed with the lid 21 according to touching to or detaching from the floor surface F of the touching rib 21c. In normal cleaning, dust is sucked from the bottom suction port 15f which is opened when the touching rib 21c touches the floor surface F. When cleaning a narrow space, the touching rib 21c is detached from the floor surface F and the bottom suction port 15f is closed by the lid 21 by inserting the front suction port 15h into the narrow space with the case body 11 stood and the front suction port 15h opposed to the floor surface F to lay the vertical direction horizontally. Thus, dust in the narrow area is sucked from the front suction port 15h and the narrow space can be cleaned. The vacuum cleaner does not require user to change the floor brush 9 with a crevice nozzle with a narrow width, which makes the cleaner convenient to use. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction port body of a vacuum cleaner having a bottom surface suction port provided on the lower side of a case body, and a vacuum cleaner including the same.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. A hose body, an extension pipe, and a floor brush as a suction port body are sequentially connected to the vacuum cleaner main body in communication with the suction side of the electric blower. This floor brush has a horizontally long case body, and a bottom surface suction port for sucking dust on the floor surface by the negative pressure of the electric blower is formed below the case body facing the floor surface which is a surface to be cleaned. ing. Although such a floor brush is suitable for cleaning a floor surface having a relatively large area, the case body cannot be inserted into a narrow gap, so that dust collected in such a gap is sucked in. I can't. For this reason, use this floor brush for normal cleaning, and when using a narrow gap, replace the suction port body such as a gap nozzle with a smaller width than the floor brush with the floor brush for cleaning. (For example, refer to Patent Document 1).
Japanese Patent Laying-Open No. 2005-245933 (page 3-5, FIG. 1-2)

  However, in the above-described electric vacuum cleaner, the floor brush and the gap nozzle or the like are selectively attached / detached corresponding to the location to be cleaned.

  In addition, since the gap nozzle is formed in a relatively small size, there is a risk that the user may lose it, and in such a case, there is a problem that it becomes impossible to clean the narrow gap. .

  Furthermore, since the gap nozzle has a narrow tip, there is a problem that it is not easy to use the electric blower for a long time because of a load.

  This invention is made | formed in view of such a point, and it aims at providing the suction inlet body of the vacuum cleaner which can clean a narrow clearance gap, and is convenient, and a vacuum cleaner provided with the same.

  The present invention provides a case body having a small height dimension with respect to at least one of the front and rear dimensions and the left and right dimensions, a pipe portion provided on the case body and connected to the suction side of the electric blower, and a surface to be cleaned. Oppositely provided on the lower side of the case body, the bottom suction port communicating with the pipe part, and the front suction port provided on the front side of the case body communicating with the pipe part, corresponding to the surface to be cleaned And an opening / closing means for opening and closing the bottom surface suction port.

  According to the present invention, the bottom surface that opens the front suction port on the front side of the case body whose height is smaller than at least one of the front-rear dimension and the left-right dimension and faces the surface to be cleaned on the lower side of the case body The suction port is opened and closed by the opening and closing means corresponding to the contact with the surface to be cleaned on the lower side of the case body, and is opened by contact with the surface to be cleaned on the lower side of the case body during normal cleaning. When dust is sucked in from the bottom suction port and a narrow gap is cleaned, the opening / closing means can be The suction port is closed, dust in the gap can be sucked from the front suction port, and cleaning can be performed. In addition, it is not necessary to replace the suction port with a small left and right dimension.

  Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS.

  In FIG. 5, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 collects dust sucked together with intake air generated by driving an electric blower 2 accommodated in a dust collection pack (not shown) that can be attached and detached. Dust.

  The vacuum cleaner main body 1 has a main body suction port 3 for sucking air from the outside. An elongated substantially cylindrical hose body 4 that is flexible and can be bent is connected to the main body suction port 3. At the tip of the hose body 4, a hand operation unit 5 that can select an operation mode of the electric blower 2 is provided. The hand operating section 5 is provided with a gripping section 6 that is gripped by an operator when cleaning, and projects a plurality of electric blowers 2 and the like in the cleaner body 1. A plurality of setting buttons 7 for setting the operation mode are provided.

  Further, an elongated, substantially cylindrical extension tube 8 that can be extended and retracted is detachably connected to the distal end of the hand operation unit 5. That is, the extension pipe 8 is connected to the suction side of the electric blower 2 through the hose body 4. Further, a floor brush 9 serving as a suction port for sucking dust on the carpet placed on the carpet of the floor surface F as a room to be cleaned, for example, is attached to and detached from the tip of the extension pipe 8. Communication connection is possible. Therefore, the floor brush 9 is connected to the suction side of the electric blower 2 through the extension pipe 8, the hose body 4, and the main body suction port 3.

  As shown in FIGS. 1 to 4, the floor brush 9 includes a case body 11 as a main body part and a communication pipe 12 as a pipe part rotatably provided at the rear part of the case body 11. ing.

  The case body 11 is formed of a member having rigidity such as a synthetic resin, for example, and is opposed to the lower side, that is, the floor surface F through a predetermined slight gap G1 through which air and dust can pass in a normal use state. A lower case 15 serving as a bottom surface, an upper case 16 that covers the upper side of the lower case 15, and a bumper 17 that is a buffer member sandwiched between the lower case 15 and the upper case 16 are provided in the communication pipe 12. The air passage W, which is a communicating space, is partitioned inside, and is formed so as to be able to travel in the front-rear direction on the floor F by wheels 18 that are rotatably provided in the lower case 15. Further, the case body 11 has a width dimension L2 which is a left-right dimension with respect to the front-rear dimension L1, and a height dimension L3 smaller than the front-rear dimension L1, that is, is horizontally long and thin.

  The lower case 15 has a flat bottom surface 15a that is formed in a horizontally long rectangular shape and faces the floor surface F, and lower case side surfaces 15b, 15b that protrude upward from the left and right sides (both sides in the width direction) of the bottom surface 15a. A lower case front surface portion 15c as a front surface portion projecting upward from the front side of the bottom surface portion 15a continuously between the lower case side surface portions 15b and 15b, and a lower air flow path W provided at the rear portion of the bottom surface portion 15a. A case partition 15d and a lower case support 15e provided at the rear of the lower case partition 15d and rotatably supporting the upstream end, which is the front end of the communication pipe 12, together with the upper case 16. A wheel 18 is pivotally supported behind the case support 15e so as to be rotatable.

  On the bottom surface portion 15a, dust on the floor surface F is attracted to the front side relative to the center position in the front-rear direction, that is, slightly behind the front surface portion 15c of the lower case by the negative pressure generated by driving the electric blower 2 (FIG. 5). A bottom surface suction port 15f for suction is formed.

  The bottom suction port 15f is a horizontally long rectangular shape corresponding to the shape of the lower case 15, that is, a long hole formed with a width dimension larger than the front and rear dimensions, and communicates with the air passage W inside the case body 11. . Therefore, the bottom suction port 15f communicates with the upstream side of the communication pipe 12 via the air passage W. Further, the bottom surface suction port 15f is configured to be opened and closed by an opening / closing lid 21 which is a lid body as an opening / closing means.

  The bottom surface suction port 15f is formed in a horizontally long manner continuously in the left-right direction of the case body 11, for example, a plurality of intermittently formed in the left-right direction of the case body 11, or the case body 11 It may be opened in a substantially central region in the left-right direction, and may not be a quadrangular shape.

  The lower case front surface portion 15c is formed in a substantially vertical flat shape while continuing to the front end portion of the bottom surface portion 15a via a curved portion 15g curved in an arc shape, and the bumper 17 is connected to the upper case 16 at the upper end portion. Between them. Further, a front suction port 15h for sucking dust on the floor surface F by a negative pressure generated by driving the electric blower 2 (FIG. 5) is formed below the bumper 17 of the lower case front surface portion 15c. Further, the lower case front surface portion 15c is formed such that the vertical dimension of the lower portion of the front suction port 15h is larger than the vertical dimension of the front suction port 15h. In other words, the front suction port 15h is formed at a position closer to the upper side of the lower case front surface portion 15c.

  Here, the front suction port 15h is a horizontally long rectangular shape corresponding to the shape of the lower case front surface portion 15c, that is, a long hole having a width dimension larger than the vertical dimension, and the air passage W inside the case body 11 Communicating with Therefore, the front suction port 15 h communicates with the upstream side of the communication pipe 12 via the air passage W. The front suction port 15h has a width dimension substantially equal to the bottom suction port 15f. That is, the front suction port 15h is formed over substantially the entire left and right direction of the lower case front surface portion 15c. Further, the front suction port 15h is located in a substantially central region in the vertical direction of the case body 11, and the communication pipe 12 is located on the lowermost side along the case body 11 (floor surface F) in a normal use state. In a rotated state, it is formed at a position below the center axis of the communication pipe 12. The front suction port 15h is opened / closed by the opening / closing lid 21 in conjunction with the opening / closing of the bottom surface suction port 15f, and is closed with the bottom surface suction port 15f open. 15f is configured to open in a closed state.

  The front suction port 15h is formed in a horizontally long manner continuously in the left-right direction of the case body 11, for example, a plurality of intermittently formed in the left-right direction of the case body 11, or the case body 11 It may be opened in a substantially central region in the left-right direction.

  The lower case partitioning portion 15d is curved so that the upper surface side defining the lower portion of the air passage W rises upward from the rear portion of the bottom surface portion 15a and gradually inclines upward toward the rear. The lower side is narrowed, that is, the air passage W is narrowed.

  The lower case support part 15e protrudes rearward from the center region in the left-right direction of the rear part of the lower case 15, and has an arcuate surface curved so that the upper surface side holding the lower part on the distal end side of the communication pipe 12 is convex downward Is formed.

  On the other hand, the upper case 16 includes a planar, horizontally-rectangular upper surface portion 16a, upper case side surface portions 16b, 16b projecting downward from the left and right sides (both sides in the width direction) of the upper surface portion 16a, An upper case front surface portion 16c as a front surface portion projecting downward from the front side of the upper surface portion 16a continuously between 16b and 16b; an upper case partitioning portion 16d that is provided at the rear of the upper surface portion 16a and divides the air passage W; An upper case support portion 16e is provided at the rear portion of the upper case partitioning portion 16d and supports the upstream end side which is the front end portion of the communication pipe 12 so as to be rotatable together with the lower case 15.

  The upper surface portion 16a is formed substantially parallel to the bottom surface portion 15a so as to face the upper portion of the bottom surface portion 15a closer to the front side. Further, in the air passage W, which is the lower part of the upper surface portion 16a, a rib-like protruding rib portion 16f as a substantially columnar guide portion is formed to protrude substantially vertically downward. Further, the rear portion of the upper surface portion 16a is located in front of the rear end portion of the bottom surface suction port 15f.

  The upper case front surface portion 16c is formed in a plane substantially perpendicular to the upper surface portion 16a and substantially flush with the lower case front surface portion 15c, and the bumper 17 is sandwiched between the lower case 15 at the lower end portion. Yes. Further, the upper case front portion 16c is formed to have a smaller vertical dimension than the lower case front portion 15c. Further, the upper case front surface portion 16c is bent substantially perpendicular to the upper surface portion 16a. Therefore, the continuous portion of the upper case front surface portion 16c and the upper surface portion 16a is bent more steeply than the curved portion 15g, which is a continuous portion of the lower case front surface portion 15c and the bottom surface portion 15a.

  The upper case partition part 16d is formed to be curved so as to form a convex arc from the rear part of the upper surface part 16a upward, and at a position above the lower case partition part 15d that is a substantially central position in the front-rear direction. Thus, the lower side is curved so as to be gradually inclined downward and the upper side of the air passage W is narrowed, that is, the air passage W is narrowed.

  The upper case support portion 16e is provided at a position facing the lower case support portion 15e, and is formed in an arcuate surface curved so that the lower surface side holding the upper portion on the distal end side of the communication pipe 12 is convex upward. Yes.

  The projecting rib portion 16f has a front end portion (lower end portion) formed in a flat shape and can come into contact with the upper side surface of the opening / closing lid 21, and by this contact, the upward movement of the opening / closing lid 21 is restricted, The movement distance (stroke) in the vertical direction of the opening / closing lid 21 can be set. That is, the protruding rib portion 16f has a function as a stopper portion of the opening / closing lid 21 and a function as a movement amount setting portion of the opening / closing lid 21. Further, the projecting rib portion 16f is located above the bottom surface suction port 15f and projects to the center position in the front-rear direction of the bottom surface suction port 15f. In addition, you may provide multiple this protrusion rib part 16f instead of one.

  The bumper 17 is formed in a frame shape by a flexible member, for example. The bumper 17 protrudes slightly outside the lower case 15 and the upper case 16 by a predetermined dimension L4, and each front portion 15c is a front side of the case body 11 when the front brush and the floor brush 9 are running. , 16c and the side portions 15b, 15b, 16b, 16b, which are side portions, serve as shock absorbing members that absorb the impact when they collide with obstacles such as walls.

  The wheel 18 has a rotation axis along the left-right direction, and the lower side protrudes below the bottom surface portion 15a of the lower case 15.

  The opening / closing lid 21 includes an opening / closing lid body 21a as a bottom surface suction port opening / closing portion formed in a flat plate shape, and a front suction port opening / closing portion formed to protrude upward from the front end portion of the opening / closing lid body 21a. It includes a front blocking portion 21b and a plurality of rib-shaped contact rib portions 21c that are protruding portions serving as cleaning surface contact portions that protrude downward from the opening / closing lid body 21a. The opening / closing lid 21 is urged downward by a coil spring 22 as urging means through which the protruding rib portion 16f of the upper case 16 of the case body 11 is inserted.

  The opening / closing lid body 21a is formed in a horizontally long rectangular shape having a shape larger than the bottom surface suction port 15f and capable of closing the bottom surface suction port 15f, and in this embodiment, having a front-rear dimension and a width dimension larger than the bottom surface suction port 15f. ing.

  The front blocking portion 21b is curved and protrudes upward from the front end portion of the opening / closing lid body 21a, and is formed in a planar shape substantially perpendicular to the opening / closing lid body 21a. Further, the front blocking portion 21b has a shape that is larger than the front suction port 15h and can close the front suction port 15h, and in the present embodiment, has a horizontally long rectangular shape having a vertical dimension and a width dimension that are larger than the front suction port 15h. Is formed. The front side surface of the front blocking portion 21b is in contact with the rear side surface of the lower case front surface portion 15c, and is configured to slide up and down along the lower case front surface portion 15c according to the operation of the opening / closing lid 21. Has been. Furthermore, the vertical dimension of the front blocking portion 21b is such that the front suction port is in a state where the tip (lower end) of the contact rib portion 21c, which is the lower side of the floor brush 9 (case body 11), is separated from the floor surface F. Positioned below 15h, does not close the front suction port 15h, and the front end of the abutment rib portion 21c abuts against the floor surface F so that the open / close lid 21 resists the bias of the coil spring 22 The front suction port 15h is formed so as to be able to be closed while being moved to the position.

  In addition, as long as the front blocking part 21b can block the front suction port 15h, the shape and number of the front blocking part 21b can be appropriately set corresponding to the shape and number of the front suction port 15h.

  Each abutment rib portion 21c protrudes downward from the lower side of the front and rear end portions of the open / close lid body 21a. The contact rib portions 21c are separated from each other by a distance larger than the front-rear dimension of the bottom surface suction port 15f, and are respectively inserted into the hole portions 15i formed at the front and rear of the bottom surface suction port 15f of the bottom surface portion 15a. Thus, the tip side protrudes downward from the lower part of the case body 11 (bottom surface portion 15a). Note that the lower end portion, which is the tip portion of the contact rib portion 21c, is preferably formed in a spherical shape (circular arc shape), and a wheel may be provided at the lower end portion.

  The coil spring 22 has an elastic force (biasing force) that urges the opening / closing lid 21 downward and contracts by the weight of the floor brush 9 (case body 11).

  The communication pipe 12 is formed to be rotatable with respect to the case body 11 in the vertical direction (the upper case 16 direction and the lower case 15 direction), the left-right direction, and the circumferential direction.

  Next, the operation of the above embodiment will be described.

  During normal cleaning, the hose body 4 is connected to the main body suction port 3, and the extension pipe 8 and the floor brush 9 are sequentially connected to the tip of the hose body 4, and the power cord is led out from the cleaner body 1. Then, the electric blower 2 is connected to an outlet (not shown), holds the grip 6 and operates the setting button 7 to drive the electric blower 2 in a desired operation mode.

  As shown in FIG. 1, when the floor brush 9 is placed on the floor surface F and the lower case 15 side is placed on the lower side, the abutment rib portion 21c abuts against the floor surface F. The open / close lid 21 moves upward, that is, away from the bottom surface portion 15a against the bias of the coil spring 22, and the open / close lid body 21a is separated from the bottom surface intake port 15f and the bottom surface intake port 15f is opened. At the same time, the front suction port 15h is covered and closed by the front blocking portion 21b. In other words, the bottom suction port 15f communicates with the communication pipe 12 via the air passage W, and the front suction port 15h is blocked from the air passage W.

  The opening / closing lid 21 is in a state in which the movement of the opening / closing lid 21 is restricted by the upper surface of the opening / closing lid body 21a coming into contact with the lower end of the protruding rib portion 16f, and the bottom suction port 15f is opened and the front suction port 15h is closed. Thus, the opening / closing lid 21 is held. In other words, the opening / closing lid 21 is held between the floor surface F and the protruding rib portion 16f.

  As a result, a predetermined slight gap G1 is formed between the lower surface of the floor brush 9 and the floor surface F by the wheel 18 and the tip side of the contact rib portion 21c slightly protruding from the lower surface of the bottom surface portion 15a. Due to the negative pressure generated by the driving of the electric blower 2, dust on the floor surface F flows from the opening A1 formed between the curved portion 15g of the front end portion of the lower case 15 and the floor surface F to the bottom suction port 15f. Inhaled.

  The dust is collected together with the sucked air through the communication pipe 12, the extension pipe 8, the hose body 4, and the main body suction port 3 through the air passage W and then collected in the dust collecting section. Air passes through the dust collecting part and is then sucked into the electric blower 2 and passes through the electric blower 2 and is exhausted to the outside of the cleaner body 1 as exhaust air.

  On the other hand, when cleaning the dust on the floor surface F with a relatively narrow gap G such as between obstacles, as shown in FIG. With this urging, the open / close lid 21 moves downward, that is, in a direction in contact with the upper surface of the bottom surface portion 15a. The opening / closing lid body 21a contacts the upper surface of the bottom surface portion 15a, so that the opening / closing lid body 21a closes the bottom surface suction port 15f and the front side blocking portion 21b slides downward from the front suction port 15h. Open inlet 15h. In other words, the bottom suction port 15f is blocked from the air passage W, and the front suction port 15h communicates with the communication pipe 12 through the air passage W.

  In this state, as shown in FIG. 3, the communication pipe 12 is tilted so as to be substantially parallel to the case body 11, in other words, along the front-rear direction of the case body 11, That is, the front brush portions 9c and 16c are opposed to the floor surface F. In other words, with the case body 11 standing, the floor brush 9 is placed in the gap G with the side surface portions 15b and 16b side as the front side, that is, Insert the vertical direction as the left-right direction. At this time, the case body 11 is smaller than the width dimension L2 of the case body 11, that is, the gap G in which the floor brush 9 cannot be inserted in a normal use state, because the height dimension L3 is smaller than the width dimension L2. The floor brush 9 can be inserted into the gap G having the width dimension L5 larger than the height dimension L3.

  As a result, the front side of the bumper 17 contacts the floor surface F to form a predetermined slight gap G2 through which air and dust can pass between the front surface of the case body 11 and the floor surface F, and the front side of the case body 11 The side of the suction port 15h is sealed to increase the degree of vacuum, and dust on the floor surface F in the gap G is sucked from the front suction port 15h opposed to the floor surface F in the same manner as in a normal cleaning state.

  As described above, according to the embodiment, the front suction port 15h is opened on the front side of the case body 11 having the height dimension L3 smaller than the front-rear dimension L1 and the width dimension L2, and The bottom suction port 15f on the side is opened / closed by the opening / closing lid 21 in response to contact / separation (contact and separation) with respect to the floor surface F of the contact rib portion 21c protruding downward facing the floor surface F of the case body 11 In normal cleaning, dust is sucked from the bottom suction port 15f opened by contact with the floor surface F of the abutment rib portion 21c, and when cleaning the narrow gap G, the case body 11 is erected on the front side. With the suction port 15h facing the floor surface F and being inserted into the gap G with the height direction set to the left and right, the open / close lid 21 with the abutment rib portion 21c spaced from the floor surface F closes the bottom surface suction port 15f, and the gap G dust can be sucked from the front suction port 15h and cleaned.

  Moreover, not only the operation of changing the suction port body such as the gap nozzle with a small width dimension and the floor brush 9 in each of the normal cleaning and the cleaning of the narrow gap G is unnecessary, for example, There is no risk of losing gap nozzles and the like, making it easier to use.

  In particular, when the gap G is cleaned by the front suction port 15h, if the unused bottom suction port 15f is open, the suction pressure is lowered and the dust cannot be sufficiently sucked from the front suction port 15h. In particular, since the front suction port 15h has a larger distance to the communication pipe 12 than the bottom suction port 15f, a negative pressure is less likely to act than the bottom suction port 15f, so that a sufficient suction pressure is required. Therefore, when the front suction port 15h is used, the bottom suction port 15f is closed by the opening / closing lid body 21a of the opening / closing lid 21, so that the suction pressure on the front suction port 15h side is secured and dust is reliably sucked in. Is possible.

  Furthermore, the front suction port 15h is automatically linked to the opening / closing of the bottom surface suction port 15f by the opening / closing lid 21 simply by bringing the abutment rib portion 21c on the lower side of the case body 11 into contact with and separating from the floor surface F. Because it is opened and closed automatically, the operability is better than when switching the opening and closing of each suction port 15f, 15h manually, etc., and it corresponds to both normal cleaning and cleaning of the gap G Corresponding to the mounting state of the body 11 on the floor surface F, the suction ports 15f and 15h necessary for the cleaning are automatically selected and opened, and the suction ports 15f and 15h not used for the cleaning are automatically opened. Since it is selected and closed, that is, only the necessary suction ports 15f and 15h are selectively opened, each user can simply place the case body 11 on the floor F suitable for each cleaning. It can be switched without being aware of the opening state of 15f and 15h, and operability is improved.

  Moreover, with the lower side of the case body 11 placed on the floor surface F, the open / close lid 21 operates to open the bottom surface suction port 15f and close the front side suction port 15h. Since the opening / closing lid 21 operates in the state of being placed on F and the bottom suction port 15f is closed and the front suction port 15h is opened using the coil spring 22, the configuration is easy.

  Further, by forming a curved portion 15g curved in an arc shape at the continuous portion between the bottom surface portion 15a and the lower case front surface portion 15c, the gap G1 communicating with the bottom surface suction port 15f is formed in the curved portion during normal cleaning. Since the opening A1 expanded by 15g communicates with the outside of the case body 11, it is easy to suck in dust by securing an air passage, and also when the case body 11 is raised and the gap G is cleaned, the front side Since the gap G2 that communicates with the suction port 15h communicates with the outside of the case body 11 through the opening A2 that is expanded by the curved portion 15g, an air passage can be secured and dust can be easily sucked.

  When cleaning the gap G with the case body 11 standing, the bumper 17 abuts against the floor surface F to form a gap G2 to secure an air passage, and the front suction port 15h is connected to the floor surface. It is possible to prevent dust from being blocked by F and to suck dust from the front suction port 15h.

  In addition, since the bumper 17 is flexible, the bumper 17 is slightly deformed by the weight of the floor brush 9 while being in contact with the floor surface F, and seals the side of the front suction port 15h opposite to the curved portion 15g. Therefore, the degree of vacuum around the front suction port 15h can be improved, and dust can be more reliably sucked from the front suction port 15h.

  Then, the bumper 17 which is a buffer member of the floor brush 9 is shared as a gap forming member for forming the gap G2 when the gap G is cleaned, thereby simplifying the configuration as compared with the configuration including these separately. Can be

  Furthermore, the protruding rib portion 16f serves as both a guide when the opening / closing lid 21 is moved in the vertical direction and a stopper for the opening / closing lid 21, so that the configuration is simpler than the case where they are provided separately. Can be

  The opening / closing lid 21 is provided with contact rib portions 21c on the front and rear sides, so that when the tip of the contact rib portion 21c comes into contact with the floor surface F, a force is transmitted to the opening / closing lid 21 in a balanced manner. It is possible to prevent the lid 21 from inclining and a gap is formed between the front blocking part 21b and the front suction port 15h, and the front blocking part 21b can be reliably closed.

  In addition, since the abutting rib portion 21c has a spherical surface (circular arc shape) at the tip that contacts the floor surface F, the sliding resistance when the floor brush 9 runs on the floor surface F is reduced. It is possible to prevent the operability of the brush 9, that is, the deterioration of the cleaning property.

  In addition, since the front suction port 15h can take a sufficiently large opening area, the load on the electric blower 2 is reduced compared with the case where a clearance nozzle having a narrow opening area of the suction port is used, and the time is increased. Can be used continuously over a period of time.

  In the above embodiment, the opening / closing lid 21 not only automatically closes the bottom surface suction port 15f by being biased by the coil spring 22, but also applies various mechanisms to the lower side of the case body 11. You may comprise so that the bottom face inlet 15f may be opened and closed corresponding to contact / separation with the floor surface F. FIG.

  Even when the opening and closing of the bottom suction port 15f and the opening and closing of the front suction port 15h are linked in reverse, a configuration other than the above can be used.

  Further, the front suction port 15h may be always open. In this case, it is possible to efficiently suck dust at the wall and the like through the front suction port 15h during normal cleaning, and the mechanism such as the opening / closing lid 21 can be simplified.

  The opening / closing means is not limited to the opening / closing lid 21. For example, the opening / closing lid main body 21a and the contact rib portion 21c are separated and the contact rib portion 21c is brought into contact with and separated from the floor surface F. The opening / closing lid main body 21a may be configured to open and close the bottom surface suction port 15f in conjunction with the above.

  Further, the detailed configuration of the case body 11 is not limited to the above as long as the height dimension L3 is formed larger than at least one of the front-rear dimension L1 and the width dimension L2.

It is a longitudinal cross-sectional view which shows the state which makes the lower side of the suction inlet of one embodiment of this invention contact a to-be-cleaned surface, and is used for normal cleaning. It is a longitudinal cross-sectional view which shows the state which spaced apart the lower side of the same suction inlet body from the to-be-cleaned surface. It is a longitudinal cross-sectional view which shows the state which uses a suction port body same as the above for cleaning of a clearance gap. It is a perspective view which shows a suction inlet same as the above. It is a perspective view which shows the vacuum cleaner provided with the suction inlet same as the above.

Explanation of symbols

1 Vacuum Cleaner Body 2 Electric Blower 9 Floor Brush as Suction Port
11 Case body
12 Communication pipe as a pipe
15f Bottom inlet
15h Front inlet
21 Opening / closing lid as opening / closing means
L1 longitudinal dimension
L2 Width that is the left and right dimension
L3 height dimension

Claims (3)

A case body having a small height with respect to at least one of the front and rear dimensions and the left and right dimensions;
A pipe portion provided in the case body and connected to the suction side of the electric blower,
A bottom surface suction port that is provided on the lower side of the case body so as to face the surface to be cleaned and communicates with the pipe portion,
A front suction port that is provided on the front side of the case body and communicates with the pipe portion;
A suction port body for an electric vacuum cleaner comprising: opening and closing means for opening and closing the bottom surface suction port in response to contact with and separation from the surface to be cleaned. The suction port body of the vacuum cleaner according to claim 1, wherein the opening / closing means reversely opens and closes the front suction port in conjunction with opening and closing of the bottom surface suction port. A vacuum cleaner body containing an electric blower,
The vacuum cleaner characterized by comprising the suction port body according to claim 1 or 2 connected to the vacuum cleaner main body so that the pipe portion communicates with the suction side of the electric blower.

Images