JP5537274B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner that can be attached to the main body of the vacuum cleaner while the mouthpiece, the expansion / contraction extension pipe and the hose are connected to the main body of the vacuum cleaner while the traveling wheel and the guide wheel of the main body of the vacuum cleaner are grounded. It is about.

  For example, Japanese Patent Laid-Open No. 3-77516 discloses an electric vacuum cleaner in which the suction body, the expansion / contraction extension pipe and the hose can be attached to the main body of the vacuum cleaner while the running wheel and the guide wheel of the main body of the vacuum cleaner are grounded. (Patent Document 1) and JP 2010-51357 A (Patent Document 2).

  The electric vacuum cleaner disclosed in Patent Document 1 is provided with a telescopic extension tube or a mouthpiece parallel to each other provided in the main body of the electric vacuum cleaner by a connecting device provided with L-shaped locking members that are parallel or substantially parallel to each other. It connects from the back with the L-shaped holding side wall. Moreover, the flange part of the said locking member becomes a structure firmly connected with the surface on the opposite side to the said flange part with a web.

  In the vacuum cleaner shown in Patent Document 2, the upper case is provided with a ring-shaped engagement portion, the extension pipe is provided with an L-shaped engagement element, and the extension pipe is raised, The extension pipe is kept upright by engaging with the engaging portion.

Japanese Patent Laid-Open No. 3-77516 JP 2010-51357 A

  According to the invention described in Patent Document 1, the locking member is formed in the coupling device that can be connected to the suction body and the expansion / contraction extension pipe. However, since the flange portions of the L-shaped locking members that are parallel to each other are connected to the surface on the opposite side of the flange portion by a web, the flange portion is larger than the expansion / contraction extension pipe and the mouthpiece pipe section. If it protrudes, it will become an obstacle at the time of cleaning of a narrow space (for example, the space under a bed), or the structure of the main body locking part will become large.

  Even in the invention described in Patent Document 2, the L-shaped locking element protrudes larger than the extension pipe, which may be an obstacle when cleaning a narrow space, or the structure of the main body locking part may be enlarged.

  An object of the present invention is to provide an electric vacuum cleaner in which a locking member that can hold an expansion / contraction extension tube in a standing state and in a horizontally placed vacuum cleaner main body without impairing performance in cleaning a narrow space. There is.

  In order to achieve the above object, a feature of the present invention is that, among the side surfaces of the joint pipe that can be rotated in the front-rear direction of the suction body, the side surface of the flow path formed on the lower surface side of the joint pipe and in the joint pipe In the projection view seen from above, a locking member for holding the expansion / contraction extension pipe in the standing state in the cleaner body is formed inside the outline of the flow path.

In order to achieve the above object, a feature of the present invention is that a support portion is disposed on an upper portion of the main body locking portion , and the support portion has the extension / contraction extension tube or the connected to the auxiliary suction port between the telescopic extension pipe and the suction body lies in you contact.

  Preferably, the front end portion and the rear end portion of the locking member are formed in an arc shape. Preferably, the front portion of the joint pipe or the second joint pipe is inclined from the locking member toward the upper surface side of the joint pipe.

  According to the present invention, the locking member is moved between the surface to be cleaned and the axial direction of the expansion / contraction extension tube by the rotation of the joint tube connected to the expansion / contraction extension tube in a state where the opening of the suction body faces the surface to be cleaned. Since the expansion / contraction extension tube is formed at a tiltable position until the formed angle reaches a predetermined angle within the range of 1 to 3.5 degrees, the protrusion amount of the locking member to the lower surface side of the joint tube is the protrusion of the expansion / contraction extension tube. It becomes lower than the quantity, and it can suppress impairing the performance in the cleaning of a narrow space.

  Further, according to the present invention, among the side surfaces of the joint pipe that can be rotated in the front-rear direction of the suction body, in the projection view seen from the lower surface side of the joint pipe and the side surface of the flow path formed in the joint pipe, By forming the locking member for holding the expansion / contraction extension tube in the standing state in the cleaner body on the inner side of the outer shell, the amount of protrusion of the locking member to the lower surface side of the joint tube can be reduced. A locking member can be reduced in size and it can suppress impairing the performance in the cleaning of a narrow space. Further, it is possible to prevent the sliding operation from being hindered when the locking member is extracted from the main body locking portion.

  Further, according to the present invention, because the support part that contacts the auxiliary suction port connected between the expansion / contraction extension tube or the expansion / contraction extension tube and the suction body is disposed on the upper portion of the main body locking portion, the expansion / contraction extension tube is stabilized, It is possible to support the moment applied to the hook portion of the cleaner body that holds the locking member.

  Further, according to the present invention, when the locking member is bent about 80 degrees from the vertical direction in the axial direction of the second joint pipe among the side surfaces of the second joint pipe, the mouthpiece body and the first joint Since it formed in the position which does not contact a pipe | tube, it can suppress impairing the performance in the cleaning (for example, near the wall) in the state which bent the suction body.

  According to the present invention, the front end portion and the rear end portion of the locking member are formed in an arc shape, or the front portion of the joint pipe or the second joint pipe is connected to the joint pipe from the locking member. By tilting toward the upper surface side, the locking member is detached from the main body locking portion when an excessive load is applied to the hand operation portion, so that the locking member or the main body locking portion can be prevented from being damaged. .

The whole external view of the vacuum cleaner of the Example of this invention. The whole external appearance figure at the time of making a vacuum cleaner hold the expansion-contraction extension pipe | tube of the Example of this invention in the standing state. FIG. 3 is an external view of a mouthpiece, an expansion / contraction extension tube, and a hand operation unit when the expansion / contraction extension tube of the embodiment of the present invention is inclined until it is close to a surface to be cleaned. The external view of a suction body and an expansion-contraction extension pipe at the time of rotating the expansion-contraction extension pipe connected to the back side joint pipe with respect to the suction body main body of the Example of this invention to the left-right direction. The front view of the mouthpiece of the Example of this invention. The side view of the mouthpiece of the Example of this invention. The rear view of the mouthpiece of the Example of this invention. The external view and sectional drawing of the main body latching | locking part of the Example of this invention. The external view of the main body latching | locking part of the other Example of this invention. Sectional drawing which showed a mode that the latching member of the Example of this invention removed from a main body latching | locking part.

  In the present invention, the locking member is formed between the surface to be cleaned and the axial direction of the expansion / contraction extension tube by the rotation of the joint pipe connected to the expansion / contraction extension tube in a state where the opening of the suction body faces the surface to be cleaned. Since the expansion / contraction extension pipe is formed at a position that can be inclined until the angle reaches a predetermined angle within a range of 1 to 3.5 degrees, the protrusion amount of the locking member to the lower surface side of the joint pipe is the protrusion amount of the expansion / contraction extension pipe. It becomes lower and it can suppress impairing the performance in the cleaning of a narrow space.

  Further, the present invention relates to the outline of the flow path in a projection view seen from the side of the flow path formed on the lower surface side of the joint pipe and in the joint pipe among the side faces of the joint pipe rotatable in the front-rear direction of the suction body. Since the locking member for holding the expansion / contraction extension pipe in the standing state in the cleaner body is formed on the inner side, the amount of protrusion of the locking member to the lower surface side of the joint pipe can be reduced. A stop member can be reduced in size and it can suppress impairing the performance in the cleaning of a narrow space. Further, it is possible to prevent the sliding operation from being hindered when the locking member is extracted from the main body locking portion.

  Further, in the present invention, since the support portion that contacts the expansion / contraction extension tube or the auxiliary suction port connected between the expansion / contraction extension tube and the suction body is disposed at the upper part of the main body locking portion, the expansion / contraction extension tube is stabilized, The moment concerning the hook part of the cleaner body which holds a stop member can be supported.

  Further, according to the present invention, the mouthpiece body and the first joint pipe are also provided when the locking member is bent about 80 degrees from the vertical direction in the axial direction of the second joint pipe among the side surfaces of the second joint pipe. Since it formed in the position which does not contact, it can suppress impairing the performance in the cleaning (for example, near the wall) of the state which bent the suction body.

  Further, according to the present invention, the front end portion and the rear end portion of the locking member are formed in an arc shape, or the front portion of the coupling pipe or the second coupling pipe is connected to the coupling pipe from the locking member. By being inclined toward the upper surface side, the locking member or the main body locking portion can be prevented from being damaged because the locking member is detached from the main body locking portion when an excessive load is applied to the hand operation portion.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an overall external view of a vacuum cleaner according to an example of an embodiment of the present invention.

The vacuum cleaner in this embodiment has a vacuum cleaner main body 101 having an air inlet (main body air inlet) 107, a hose 102 connected at one end to the air inlet 107, and one end connected to the other end of the hose 102 and connected. A hand operating unit 103 that is connected to the other end of the hand operating unit 103 and connected to the other end of the hand extension unit 104, and a suction port 105 that is connected to and connected to the other end of the telescopic extension pipe 104. The operation unit 103 is connected by a hose 102, and the suction body 105 is connected to the hand operation unit 103 via the expansion / contraction extension tube 104. The hand operation unit 103 and the extension / contraction extension tube 104, the extension / contraction extension tube 104 and the suction body 105, and the hand operation unit 103, the extension / contraction extension tube 104, the suction body 105, and the auxiliary suction port are detachably connected.
The auxiliary suction port may be connected between the front end of the expansion / contraction extension tube 104 or between the expansion / contraction extension tube 104 and the suction body 105, or between the front end of the hand operation unit 103 or the hand operation unit 103 and the expansion / contraction extension tube 104. It may be connected.

  The mouthpiece 105 has a substantially T-shape. The mouthpiece 105 includes a mouthpiece body 106 having an opening on the bottom surface, and a joint pipe connected to the expansion / contraction extension pipe 104. The joint pipe is supported by the front body joint pipe 112 so as to be pivotable in the front-rear direction with respect to the suction body main body 106, and is supported by the front-side joint pipe 112 so as to be able to turn left and right by the vertical axis. And a rear joint pipe 113. Therefore, the joint pipe is rotatable in a predetermined angle range (0 to 100 degrees with respect to the surface to be cleaned) in the front-rear direction and in a predetermined angle range (80 degrees left and right from the vertical direction). The expansion / contraction extension pipe 104 can be connected to the rear joint pipe 113. Since the front joint pipe 112 is connected to the upper side of the suction body main body 106 and is connected to the upper side of the rear joint pipe 113, the front joint pipe 112 is in a state where the axial direction of the joint pipe is substantially parallel to the surface to be cleaned. Is the highest among the mouthpieces 105. That is, the height from the bottom surface of the mouthpiece body 106 to the top surface of the front joint pipe 112 is the height of the mouthpiece 105.

The expansion / contraction extension tube 104 includes a front extension tube located on the mouthpiece 105 side and a rear extension tube located on the hand operation unit 103 side, and the front extension tube is slidably inserted into the rear extension tube.
The extension extension tube 104 can be extended and contracted by sliding the front extension tube and the rear extension tube relative to each other. At the insertion end of the front extension tube of the rear extension tube, there is a retaining mechanism for preventing the front extension tube from coming out of the rear extension tube and a lock mechanism for locking the slide of the front extension tube with respect to the rear extension tube. Therefore, the diameter of the insertion end of the front extension tube of the rear extension tube is the largest among the expansion / contraction extension tubes 104. In particular, the insertion amount of the front extension tube of the rear extension tube has a large amount of downward projection in the telescopic extension tube 104. The hand operation unit 103 includes a straight pipe connected to the extension / contraction extension pipe 104 and a handle branched from the straight pipe. The handle can be gripped by the user. The side on which the handle of the hand operation unit 103 is formed is defined as the upper side. Instead of the expansion / contraction extension tube 104, an extension tube that does not expand / contract may be used.

  A dust collection chamber (not shown) communicating with the air inlet 107 is disposed on the front side (the side to which the hose 102 is connected) in the cleaner body 101, and further, dust is collected in the dust collection chamber. A dust collecting unit 109 is detachably disposed. The dust collection unit 109 may be a cyclone type dust collection case or a disposable paper pack. An electric blower 108 that generates a suction force is disposed on the rear side in the cleaner body 101. One guide wheel 111 is formed at a substantially central portion in the left-right direction on the front side of the bottom surface of the cleaner body 101, and two traveling wheels 110 are formed on the left and right sides on the rear side of the cleaner body 101. In a state where the vacuum cleaner main body 101 is placed horizontally, the user can easily move the vacuum cleaner main body 101 by the traveling wheels 110 and the guide wheels 111. And when the power button provided in the hand operation part 103 is turned ON by the user, the electric blower 108 will act | operate and will generate | occur | produce a suction force. The air sucked from the mouthpiece 105 and the dust sucked together with the air are guided in the order of the extension / contraction extension tube 104, the hand operating section 103, the hose 102, and the cleaner body 101.

  FIG. 2 is an overall external view of the housed state of the vacuum cleaner according to an example of the embodiment of the present invention. When the vacuum cleaner is in use, the cleaner body 101 is placed horizontally with the traveling wheel 110 and the guide wheel 111 grounded, and when the vacuum cleaner is stored, the rear surface of the cleaner body 101 is grounded. Preferably it is. As shown in FIG. 1, the engagement member 201 of the suction body 105 is engaged with a main body engagement portion 301 provided at a substantially central portion in the left-right direction and a substantially central portion in the vertical direction on the rear surface of the cleaner body 101, thereby cleaning the suction body 105. The hose 102, the expansion / contraction extension pipe 104, and the suction body 105 can be accommodated while the machine main body 101 is placed horizontally. That is, the expansion / contraction extension tube 104 can be held by the cleaner body 101 in an upright state. At this time, the bottom surface of the suction body 105 is opposed (grounded) to the surface to be cleaned, and the joint pipes (the front joint pipe 112 and the rear joint pipe 113) are turned upright with respect to the suction body main body 106. ing. The standing state of the expansion / contraction extension tube 104 is not only the state in which the axial direction of the expansion / contraction extension tube 104 is approximately 90 degrees with respect to the surface to be cleaned, but also the state in which the expansion / contraction extension pipe 104 is inclined approximately 10 degrees back and forth from the approximately 90 degrees state. Also included. Thus, when the user temporarily suspends the use of the vacuum cleaner, the user does not have to squat down and place the hand operating unit 103, the expansion / contraction extension tube 104, and the mouthpiece 105 on the surface to be cleaned. Even when resuming use, it is not necessary to squat down and lift the hand operating portion 103, the extension / contraction extension tube 104, and the mouthpiece 105 from the surface to be cleaned, so that the burden on the user can be reduced. The main body locking portion 301 may be formed on the side surface of the cleaner body 101 instead of or in addition to the rear surface of the cleaner body 101.

  FIG. 3 is an external view showing an angle α formed between the surface to be cleaned and the expansion / contraction extension tube 104. In FIG. 3, the shaded area is the surface to be cleaned (for example, the floor surface). The locking member 201 is formed on the lower surface side of the side surface of the joint pipe of the suction body 105. In the locking member 201, the angle α formed between the surface to be cleaned and the axial direction of the expansion / contraction extension tube 104 is within a range from approximately 100 degrees to a predetermined angle (any angle within a range of 1 to 3.5 degrees). Form. In the state where the opening of the suction body 105 is opposed (grounded) to the surface to be cleaned, when the axial direction of the expansion / contraction extension tube 104 is inclined in a direction parallel to the surface to be cleaned, the diameter of the expansion / contraction extension tube 104 is the largest. The insertion end of the front extension pipe of the large rear extension pipe contacts the surface to be cleaned. The grounded state is the lower limit value of the angle α. If the locking member 201 protrudes downward, the locking member 201 contacts the surface to be cleaned before the insertion end of the front extension tube of the rear extension tube contacts the surface to be cleaned. The state in which the member 201 is grounded is the lower limit value of the angle α. In the present embodiment, the amount of protrusion of the locking member 201 to the lower side is smaller than the amount of protrusion of the rear extension tube to the lower side of the insertion end of the front extension tube. Before the insertion end of the front extension pipe contacts the surface to be cleaned, the locking member 201 does not contact the surface to be cleaned. In the present embodiment, by providing the locking member 201 on the outer side surface of the mouthpiece 105, the lower limit value of the angle α formed by the surface to be cleaned and the expansion / contraction extension tube 104 is 3.5 degrees. FIG. 3 shows a state in which the expansion / contraction extension tube 104 is most contracted. When the telescopic extension tube 104 is extended, the front extension tube of the rear extension tube having the largest diameter among the extension tube 104 moves away from the pivot point in the front-rear direction, so the lower limit of the angle α is 3.5 degrees. Smaller than. As a result, the amount of protrusion of the locking member 201 to the lower side is lower than the amount of protrusion of the expansion / contraction extension tube 104, the suction body 105, and the hand operation unit 103, and the performance in cleaning a narrow space is not impaired. The locking member 201 may be provided on the side surface of the expansion / contraction extension tube 104 or the side surface of the auxiliary suction port.

  FIG. 4 is an external view showing an angle β formed by the vertical direction and the axial direction of the expansion / contraction extension pipe 104 connected to the rear joint pipe 113. The locking member 201 is formed on the side farther from the connecting portion with the front joint pipe 112 in the rear joint pipe 113 in the axial direction. Therefore, as shown in FIG. 4, the rear joint pipe 113 with respect to the front joint pipe 112 is set so that the angle β formed by the vertical direction and the axial direction of the expansion / contraction extension pipe 104 is about 80 degrees in each of the left direction and the right direction. In the bent state, the locking member 201 provided on the rear joint pipe 113 does not come into contact with the flow passage side surface at the center of the suction body 105 (the connection part between the suction body main body 106 and the front joint pipe 112). Further, in this embodiment, the height L1 of the locking member 201 is set to 24 mm or less. Accordingly, even when the angle extension β between the vertical direction and the axial direction of the expansion / contraction extension tube 104 is bent to be about 80 degrees, the locking member 201 is not in contact with the mouthpiece 105, so that the mouthpiece 105 is bent. The locking member 201 can be formed without impairing the performance in cleaning in the wet state.

5, 6, and 7 are a front view, a side view, and a rear view of the locking member 201, respectively. As shown in FIGS. 5 and 7, the locking member 201 is formed on each of the left and right side surfaces of the rear joint pipe 113 and protrudes from the side face of the rear joint pipe 113 to the left and right outer sides. It is composed of a member. The front-rear direction and the vertical direction shown in FIG. 6 are directions based on the joint pipe.
The rear part of the rear joint pipe 113 has a smaller diameter than the front part, and the rear part of the rear joint pipe 113 is inserted into the expansion / contraction extension pipe 104 so that the rear joint pipe 113 is expanded / contracted. Connected to. When the locking member 201 and the main body locking portion 301 are in a connected state, the locking member 201 is detached from the main body locking portion 301 when an excessive load is applied in the left-right direction of the hand operating portion 103. The front and rear end faces of 201 are arcuate (R1, R2). This prevents the locking member 201 or the main body locking portion 301 from being damaged because the locking member 201 is detached from the main body locking portion 301 when an excessive load is applied in the left-right direction of the hand operating portion 103. it can. In addition, since the front end surface of the locking member 201 has an arc shape, the locking member 201 can be easily inserted when the locking member 201 is slid and inserted into the main body locking portion 301. The lower side R1 of the locking member 201 has a dimensional relationship that is about 1.7 times the upper side R2 (for example, R1 = 30, R2 = 18). The lower side R1 of the locking member 201 has a larger curvature than the upper side R2. When the arc shapes R1 and R2 on both end faces of the locking member 201 are increased, the distance from the main body locking portion 301 becomes wider, and the main body locking portion 301 is easily detached. Further, as R1 and R2 are reduced, the distance from the main body locking portion 301 becomes narrower. Therefore, when an excessive load is applied in the lateral direction of the hand operating portion 103, the locking member 201 is engaged with the main body. It will not come off from the stop 301.

  Further, as shown in FIG. 6, the locking member 201 is formed on the lower side of the side surface of the rear joint pipe 113. With respect to the direction in which the locking member 201 is formed, the side surfaces of the two left and right locking members 201 are tilted about 1 degree from the axial direction of the telescopic extension tube 104 as shown in FIG. The (upper surface) and the rear surface (lower surface) were formed so as to be substantially parallel to the axial direction of the expansion / contraction extension tube 104 as shown in FIG. The locking member 201 has a trapezoidal shape in which the outer side of the flow path becomes thicker to improve the strength. That is, the thickness of the locking member 201 is formed so as to become gradually thinner from the protruding root toward the tip. By tilting the side surfaces of the two left and right locking members 201 in a C-shape, when an excessive load is applied in the left-right direction of the hand operation unit 103, the arc of the locking member 201 is formed on the inner wall of the main body locking unit 301. Since the parts abut, the resistance during sliding can be reduced. Further, the rear surface of the locking member 201 is formed about 1 mm inward (upper surface side) from the outer periphery 203 of the flow path of the rear joint pipe 113 so as to be parallel to the axial direction of the expansion / contraction extension pipe 104. It connected to the inclined surface 202 of the flow path of the pipe 113. As a result, the locking member 201 causes the inclined surface 202 of the rear joint pipe 113 and the inner wall of the main body locking portion 301 when an excessive load is applied to the hand operating portion 103 in the direction opposite to the cleaner body 101 side. Does not obstruct sliding movement. That is, when the front side of the locking member 201 of the rear joint pipe 113 is not inclined (when there is no inclined surface 202), the front side of the locking member 201 of the rear joint pipe 113 is the main body locking portion. Since the inner wall of 301 is restrained by contact, a load is applied to the locking member 201 and the main body locking portion 301, and the locking member 201 or the main body locking portion 301 is damaged. On the other hand, when the front side of the locking member 201 of the rear joint pipe 113 is inclined (when there is an inclined surface 202), the front side of the locking member 201 of the rear joint pipe 113 is the main body. Since it slides in contact with the inner wall of the locking portion 301, the locking member 201 can easily move above the main body locking portion 301, and the locking member 201 can be easily detached from the main body locking portion 301. That is, the inclined surface 202 of the rear joint pipe 113 serves as a guide when the locking member 201 moves relative to the main body locking portion 301. Since the front joint pipe 112 and the rear joint pipe 113 are connected in the vertical direction, the flow path formed in the rear joint pipe 113 reduces pressure loss when turning from the vertical direction to the axial direction. It is formed with a curve. The outer shell shape of the flow path formed by the curve forms the inclined surface 202. The inclined surface 202 is preferably formed in an arc shape, but may be formed in a linear shape. Further, in the left-right direction, the locking member 201 protrudes outward from the outer periphery 203 of the outline of the flow path of the rear joint pipe 113, but in the vertical direction, the lock member 201 protrudes from the outline of the flow path of the rear joint pipe 113. Since the locking member 201 does not protrude radially outward (downward) from the outer periphery 203 of the outline of the flow path of the rear joint pipe 113 by being formed about 1 mm inward from the outer periphery 203, the surface to be cleaned and the expansion / contraction extension The lower limit value of the angle α formed by the tube 104 can be reduced. Here, about 1 mm inside from the outer periphery 203 of the outer periphery of the flow path of the rear joint pipe 113 means that the outer periphery 203 of the outer shell of the flow path in the projection view seen from the side surface of the flow path of the rear joint pipe 113. The side close to the center of the channel about 1 mm. The outer shell of the flow path is constituted by a cylindrical member having a thickness of about 1 mm, and the outer periphery of the outer shell is the outermost periphery of the cylindrical member. Further, by forming the front surface of the locking member 201 in parallel with the axial direction of the telescopic extension tube 104, when an excessive load is applied to the hand operating unit 103 in the direction opposite to the cleaner body 101 side, The sliding member 201 can be smoothly slid until the stop member 201 comes off the main body locking portion 301. Here, when the front surface of the locking member 201 is tilted in a letter C shape, the interval between the locking member 201 and the main body locking portion 301 is widened, and the locking member 201 is less likely to contact the main body locking portion 301. . In addition, when it is tilted in an inverted C shape, the distance from the contact surface of the inclined surface 202 of the mouthpiece 105 to the contact surface of the locking member 201 becomes large. The part 303 is enlarged.

  FIG. 8 is an external view of the main body locking portion 301. FIG. 8B is a view (front view) of the main body locking portion 301 viewed from the front, and FIG. 8A is a CC cross-sectional view (vertical cross-sectional view) in FIG. FIG. 8D is a diagram (plan view) of the main body locking portion 301 viewed from above. FIG.8 (c) is DD sectional drawing (cross section of the left-right direction) figure of FIG.8 (b). As shown in FIG. 8B, the main body locking portion 301 is provided with a support portion 302 at the upper portion and a hook portion 303 at the lower portion. The main body locking part 301 supports the weight of the hose 102, the hand operating part 103, the expansion / contraction extension pipe 104, and the suction body 105 by being attached to the rear surface of the cleaner body 101 via the attachment part 307. The support part 302 has a concave part 305 having an arcuate cross section in the vertical direction so as to abut the arcuate outer periphery of the expansion / contraction extension pipe 104. By providing the concave portion 305 in the support portion 302, it is possible to suppress rattling of the expansion / contraction extension tube 104 in the left-right direction when the expansion / contraction extension tube 104 is held in an upright state. In addition, two protrusions may be provided on the support portion 302 to hold the expansion / contraction extension pipe 104 and to prevent the extension / contraction extension pipe 104 and the suction body 105 from rattling in the left-right direction. The support portion 302 is recessed at a position where the expansion / contraction extension tube 104 and the suction body 105 are held in a state in which the axial direction of the surface to be cleaned and the expansion / contraction extension tube 104 is inclined about 3 to 5 degrees from the vertical state toward the cleaner body 101 side. 305 is formed. Further, it is preferable that the height between the expansion / contraction extension tube 104 and the lower end of the support portion 302 be equal to or larger than the height of the hook portion 303 in order to reduce the load applied to the hook portion 303.

  As shown in FIG. 8A, the hook portion 303 of the main body locking portion 301 includes a flange portion 306 provided symmetrically. The flange portion 306 has a substantially U-shaped cross section in the vertical direction. The locking member 201 is inserted into the space formed in the flange portion 306. The space formed in the flange portion 306 corresponds to the outer peripheral shape of the locking member 201, and the distance between the two flange portions 306 corresponds to the distance between the two locking members 201. When the locking member 201 and the main body locking portion 301 are in a connected state, when an excessive load is applied in the left-right direction of the hand operating portion 103, the main body locking is performed so that the locking member 201 is detached from the main body locking portion 301. The upper part of the flange part 306 of the part 301 has an arc shape (R3) and the lower part has a chamfered shape (γ). The upper portion R3 of the flange portion 306 of the hook portion 303 is about 1/4 of the height dimension of the hook portion 303. On the other hand, γ below the flange portion 306 of the hook portion 303 is about 60 degrees. As the shapes R3 and γ of the both end faces of the flange portion 306 of the hook portion 303 are increased, the rattling increases and it becomes easy to come off. Furthermore, if R3 and γ are reduced, the locking member 201 will not come off the main body locking portion 301 when an excessive load is applied in the left-right direction of the hand operating portion 103.

  As shown in FIG. 8C, a step is provided between the rear surface of the support portion 302 and the rear surface of the hook portion 303. That is, the rear surface of the support portion 302 is lower than the rear surface of the hook portion 303. When the semi-annular protrusion 204 formed on the rear joint pipe 113 is placed on this step, the expansion / contraction extension pipe 104 and the suction body 105 can be prevented from falling downward. Further, two suction port locking ribs 304 are provided in the left-right direction with respect to the center in the left-right direction so that the hook portion 303 contacts the outer periphery of the rear joint pipe 113. Thereby, even when the convex part of the rear side joint pipe 113 and the upper surface of the hook part 303 of the main body locking member 301 do not contact, the dropout body 105 can be prevented from falling off.

  FIG. 9 is an external view of another embodiment of the main body locking portion 301. In FIG. 8, the suction port locking rib 304 has two protrusions, but in FIG. 9, it has a single concave arc shape. 9 can also prevent the suction body 105 from falling off even when the convex part of the rear joint pipe 113 and the upper surface of the hook part 303 of the main body locking member 301 do not contact with each other.

  FIG. 10 is a cross-sectional view illustrating a state in which the locking member 201 is detached from the main body locking portion 301 when an excessive load is applied to the hand operation portion 103. In the state where the vacuum cleaner main body 101 is in the horizontal position, when the locking member 201 and the main body locking portion 301 are connected, the concave portion 305 of the support portion 302 of the main body locking portion 301 and the lower surface of the expansion / contraction extension tube 104 abut, Further, the protrusion of the rear joint pipe 113 of the mouthpiece 105 and the upper surface of the hook portion 303 of the main body locking member 301 are in contact with each other, thereby preventing the mouthpiece 105 and the expansion / contraction extension pipe 104 from falling off (FIG. 10). (A)). When an excessive load is applied to the hand operating unit 103 in a direction opposite to the cleaner main body 101 in an attempt to remove the suction body 105 and the expansion / contraction extension tube 104 from the cleaner main body 101 while holding the hand operating unit 103. The upper end of the locking member 201 is inclined rearward with respect to the lower end with respect to the front-rear direction of the cleaner body 101, and the upper side of the locking member 201 is in contact with the upper end of the A surface inside the flange portion 306. Then, the upper part of the inclined surface 202 of the rear joint pipe 113 comes into contact with the lower end of the B surface of the hook portion 303 (FIG. 10B). As the inclination of the telescopic extension tube 104 increases, the locking member 201 comes into contact with the upper part of the A surface of the flange portion 306, and the inclined surface 202 slides while coming into contact with the lower end of the B surface of the hook portion 303. When the tube 104 is inclined about 20 degrees or more from the vertical direction, the locking member 201 is detached from the main body locking portion 301 (FIG. 10C). As a result, the user can remove the mouthpiece 105 and the expansion / contraction extension tube 104 from the cleaner body 101 while holding the hand operation unit 103 and tilting it backward with respect to the front-rear direction of the cleaner body 101. As compared with the case where the suction body 105 and the expansion / contraction extension tube 104 are removed from the cleaner body 101 by holding the hand operation unit 103 in the vertical direction, the suction body 105 and the expansion / contraction extension pipe are removed from the cleaner body 101 with a small force. Since 104 can be removed, the burden on the user can be reduced.

  As described above, according to this embodiment, since the locking member 201 is provided on the inner side of the outer edge of the side surface of the suction body 105, the performance in cleaning a narrow space or cleaning the suction body 105 is bent. There is no loss. Further, since the locking member 201 is provided on the inner side of the outer edge of the side surface of the flow path of the suction body 105, when the locking member 201 is extracted from the main body locking portion 301, the outer wall of the flow path is the inner wall of the main body locking portion 301. It becomes a fulcrum of sliding operation. Further, by providing the support portion 302 in the main body locking portion 301, the wobbling of the expansion / contraction extension tube 104 can be suppressed and the moment applied to the hook portion 303 can be supported. Further, when an excessive load is applied to the hand operation unit 103 in a state where the locking member 201 is connected to the main body locking portion 301, the locking member 201 and the main body locking portion 301 are each locked member. Since 201 has a shape that is disengaged from the main body locking portion 301, the locking member 201 and the main body locking member 301 are not damaged.

DESCRIPTION OF SYMBOLS 101 Vacuum cleaner main body 102 Hose 103 Hand operation part 104 Telescopic extension pipe 105 Suction body 106 Suction body main body 107 Inlet 108 Electric blower 109 Dust collection part 110 Traveling wheel 111 Guide wheel 112 Front side joint pipe 113 Rear side joint pipe 201 Locking member 202 Inclined surface 203 Periphery of outer periphery of flow path 204 Protrusion 301 Main body locking portion 302 Supporting portion 303 Hook portion 304 Suction lock rib 305 Recessed portion 306 Flange portion 307 Mounting portion

Claims (3)

In the vacuum cleaner that holds the telescopic extension tube in the standing state and the horizontal vacuum cleaner body,
Among the side surfaces of the joint pipe that can be rotated in the front-rear direction of the suction body, in the projection view seen from the lower surface side of the joint pipe and the side surface of the flow path formed in the joint pipe, than the outline of the flow path An electric vacuum cleaner characterized in that a locking member is formed on the inner side to hold the expansion / contraction extension tube in a standing state in the main body of the vacuum cleaner.
A vacuum cleaner body having an electric blower and a dust collecting part, a hose that can be connected to the vacuum cleaner body at one end, a hand operating part that can be connected to the other end of the hose, and a hand operating part other than the hand operating part In an electric vacuum cleaner comprising an expansion / contraction extension tube connectable to an end and a suction body connectable to the other end of the expansion / contraction extension tube,
The telescopic extension pipe and the suction body can be held in the cleaner body in an upright state by attaching a locking member provided on the suction body to a body locking part provided on the vacuum cleaner body,
A support part is arranged on the upper part of the main body locking part ,
The support portion is a vacuum cleaner, wherein the telescopic extension tube you contact connected to auxiliary suction port between the telescopic extension tube or the telescopic extension pipe and the suction body in an upright state.
  The vacuum cleaner according to claim 1 or 2, wherein the locking member has a front end portion and a rear end portion formed in an arc shape.

Images