JP4130174B2 - Electric vacuum truck - Google Patents

Description

  The present invention relates to a truck for a vacuum cleaner provided with a base on which a vacuum cleaner main body containing an electric blower is detachably provided.

2. Description of the Related Art Conventionally, for example, a truck used for a wet vacuum cleaner for business use, that is, a wet vacuum cleaner, includes a base body on which a cleaner body is integrally provided and can travel. The main body of the vacuum cleaner has a waste liquid tank that stores waste liquid and the like and can be attached to and detached from the base body, and a suction portion provided at an upper portion of the waste liquid tank. In addition, a handle portion gripped by an operator is provided on the rear portion of the base so as to protrude vertically upward. The handle portion can be partially folded with respect to the base (see, for example, Patent Document 1).
JP-A-9-215645 (5th page, FIG. 4)

  In general, the wet vacuum cleaner is often carried in a vehicle. For this reason, in order to ensure ease of transport, loading space, and the like, it is preferable that the main body of the cleaner is detached from the base body and the base body is stored with the handle portion folded.

  However, in the above-mentioned electric vacuum cleaner carriage, the handle portion cannot be held on the base body in the folded state.

  Therefore, although a configuration in which a holding portion for holding the handle portion on the base body is conceivable, depending on the position where the holding portion is provided, there is a possibility that it may become an obstacle when the cleaner body is detached from the base body.

  This invention is made in view of such a point, and it aims at providing the trolley | bogie for electric vacuum cleaners which can hold | maintain a handle | steering-wheel part to a base | substrate, and can attach or detach a vacuum cleaner main body easily.

The present invention provides an electric blower and a vacuum cleaner main body having a dust collecting portion provided in front of a base that is detachably provided, a suction port body that sucks an object to be sucked by driving of the electric blower, and a base. A support portion that supports the outer surface of the machine main body, a wheel that is rotatably provided on the base body, allows the base body to travel, and at least partly protrudes rearward from the base body, and rotates with respect to the base body. A handle portion that is at least partially protruded rearward from the base body and supports the base body in a self-supporting manner together with the wheel, and a handle portion fixing shaft that fixes the rotation of the handle portion. an elastic member for biasing the upward the handle portion fixed shaft, the handle portion in a folded state of the handle portion includes a holding portion configured to hold the substrate, a handle portion, rotation allowed to the substrate And a gripped portion spanned between the upper ends of the pivoted support portions, and the handle portion fixing shaft spans between the lower end sides of the pivoted support portions. The handle portion can be released by moving it downward against the bias of the elastic body, and the holding portion is provided outside the support portion and provided on the base. And a cover that is pivotally connected to the attached portion and holds one of the pivoted support portions of the folded handle portion between the attached portion and the attached portion and the cover. And a fixing portion for fixing the attached portion and the cover to each other in a state where one of the supported shaft supporting portions of the handle portion is sandwiched .

According to the present invention, the handle portion fixing shaft spanned between the lower end sides of the shaft support portion of the handle portion is pushed down against the bias of the elastic body to rotate the handle portion with respect to the base body. , Either one of the supported shaft support portions of the handle portion is clamped between the attached portion of the holding portion provided on the base and the cover rotatably connected to the attached portion, and fixed by the fixing portion As a result, the handle portion can be rotated with respect to the base body and held in a folded state, and the holding portion is positioned more outward than the support portion that supports the outer surface of the cleaner body. When the machine main body is detached from the base body, the holding part does not get in the way and can be easily detached.

  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 as a cleaning device. The vacuum cleaner 1 is a wet type that collects waste liquid as a sucked object when cleaning a hard floor or peeling a wax in floor care. It is a vacuum cleaner, that is, a wet vacuum cleaner.

  The electric vacuum cleaner 1 includes a travelable electric vacuum cleaner carriage 2 (hereinafter simply referred to as the carriage 2), and a substantially cylindrical vacuum cleaner body 3 that is detachably attached to the carriage 2. Yes.

  The carriage 2 includes a squeegee 4 as a suction port body that is detachably attached. Moreover, this trolley | bogie 2 is provided with the substantially square-shaped mounting base 11 as a base | substrate with which the cleaner main body 3 is provided so that attachment or detachment is possible, as shown in FIG.1 and FIG.2. A pair of front wheels 12 that are turning wheels and a pair of rear wheels 13 that are running wheels as wheels are rotatably provided at the lower portion of the mounting table 11, and the mounting table is formed by the front wheels 12 and the rear wheels 13. 11 can run. Further, a handle portion 14 held by an operator is provided at the rear portion of the mounting table 11 so as to be foldable.

  The mounting table 11 includes a front frame 21 and a rear frame 22 that are spaced apart from each other in parallel, side frames 23 and 23 spanned between the frames 21 and 22, and both side frames 23 and 23. And a support frame 24 sandwiched therebetween.

  The front frame 21 is provided in an elongated linear shape, is located at the foremost part of the mounting table 11, and is provided in a linear shape along the width direction of the carriage 2.

  The rear frame 22 is provided in a shape substantially equal to the front frame 21 and is located at the rearmost part of the mounting table 11.

  The side frames 23 and 23 are provided in the shape of an elongated straight line, and are provided at positions slightly closer to the center in the width direction than both ends of the frames 21 and 22, respectively. For this reason, each frame 21, 22 protrudes outward from the side frames 23, 23 at both ends. The both side frames 23 and 23 are integrally fixed with bolts or the like (not shown) along the front-rear direction which is orthogonal to the frames 21 and 22.

  The support frame 24 is provided in an elongated linear shape and is provided in parallel with the frames 21 and 22. Further, both ends of the support frame 24 are fixed to both side frames 23 and 23 with bolts or the like (not shown).

  The mounting table 11 is provided with a plurality of, for example, three main body support members 26 that support the outer peripheral surface of the cleaner body 3. These body support members 26 are formed by bending a metal member or the like into a substantially L shape, and are formed in the longitudinal direction of the rear frame 22 in the vicinity of both ends of the front frame 21 and the intersections of the side frames 23 and 23. It is fixed to the center area of each with bolts 27 or the like. Further, for example, two of these main body support members 26 are disposed in the vicinity of both end portions on the front frame 21, and one is disposed in the central area in the longitudinal direction on the rear frame 22, so that the outer peripheral surface of the cleaner body 3 Are arranged in a balanced manner at approximately equal intervals.

  An attachment body 28 to which the squeegee 4 is detachably attached is provided below the support frame 24 of the mounting table 11. The attachment body 28 has a tip protruding from the front of the mounting table 11. In addition, a pair of fixing pieces 29 and 29 for fixing the squeegee 4 in a balanced manner in the longitudinal direction are projected from the tip of the attachment body 28.

  Each front wheel 12 is provided so as to be able to turn on the front side of the cleaner body 3 which is the lower part of both ends of the front frame 21 of the mounting table 11. The moving direction of the carriage 2 can be changed by the front wheels 12.

  Each rear wheel 13 is located on the rear side of the cleaner body 3 and is formed with a diameter larger than that of each front wheel 12. The rear wheels 13 are fixed to both ends of the rotating shaft 31, respectively, and rotate integrally with each other.

  Here, the rotating shaft 31 is rotatably inserted into through holes (not shown) of the bracket 32 projecting downward from both ends of the rear frame 22, and both ends are both sides of the mounting table 11. Protrudes into the part. Further, the rotation shaft 31 has a distance L1 from the rear end portion of the rear frame 22 in a side view smaller than the radial dimension R of each rear wheel 13. That is, L1 <R. Therefore, as shown in FIG. 4 and the like, each rear wheel 13 has a rear portion protruding rearward from the rear frame 22 of the mounting table 11 in a side view.

  The handle portion 14 is formed, for example, by bending a metal pipe into a U shape. That is, the handle portion 14 includes pivoted portions 36 and 36 that are rotatably supported by mounting brackets 35 that are respectively attached to both end portions of the rear frame 22 of the mounting table 11, and these supported portions 36 and 36. And a gripped portion 37 that is integrally stretched over the upper end portion.

  Each mounting bracket 35 is disposed at the rear end portion of the mounting table 11, each rear end portion being substantially flush with the rear end portion of the rear frame 22, and at both ends of the rear frame 22, respectively. positioned. Each of the mounting brackets 35 has a pair of side plate portions 41, 41 and a bottom plate portion 42 that is integrally bridged to the lower end portions of the side plate portions 41, 41, and is formed in a U shape in a front view. Has been.

  Each side plate portion 41 has a surface direction along the front-rear direction of the carriage 2 and projects vertically upward with respect to the rear frame 22 of the mounting table 11. Further, the side plate portions 41 are separated from each other in the width direction of the carriage 2 by a distance larger than the thickness dimension of the supported shaft portions 36 and 36 of the handle portion 14. Further, between each side plate portion 41, a support shaft 45 that pivotally supports the handle portion 14 so as to be rotatable in the front-rear direction, and a regulation shaft 46 that regulates the rotation angle of the handle portion 14 are spanned. Yes.

  Each support shaft 45 penetrates a position at a predetermined distance L2 from the end of the handle portion 14 opposite to the gripped portion 37 of the supported shaft portions 36, 36, and is provided in a support shaft insertion hole provided in each side plate portion 41. Both end portions are inserted into 47 and fixed to be freely rotatable.

  Here, the distance L3 from the rear end portion of each side plate portion 41 to the support shaft insertion hole 47 is smaller than the distance L2. That is, L3 <L2. Therefore, the end portion of the handle portion 14 opposite to the gripped portion 37 of the pivot support portions 36, 36 is the rear end portion of the side plate portion 41 in the folded state of the handle portion 14, as shown by the imaginary line in FIG. It protrudes rearward from the end portion, and is a support portion 48 that is a fulcrum that supports the mounting table 11 in a self-supporting manner together with the rear portion of the rear wheel 13 in a state where the carriage 2 is raised.

  Each regulating shaft 46 is positioned in front of each support shaft 45, and both end portions thereof are fixed to the respective side plate portions 41, respectively. Each regulation shaft 46 has a distance L4 to each support shaft 45 smaller than the distance L2. That is, L4 <L2. Therefore, as shown by the solid line and the imaginary line in FIG. 4, the maximum rotation angle of the handle portion 14 is restricted by the front sides of the pivot support portions 36, 36 coming into contact with the restriction shafts 46 when turning. Has been.

  The bottom plate portion 42 is fixed to the rear frame 22 with a bolt or the like (not shown).

  A handle portion fixing shaft 51 is spanned between the mounting brackets 35. Both ends of the handle portion fixing shaft 51 are inserted into guide holes 52 formed in the side plate portions 41 located on the center side in the width direction of the carriage 2 of each mounting bracket 35.

  These guide holes 52 are positioned below the support shaft insertion hole 47 and are formed in a long hole shape in the vertical direction. Further, these guide holes 52 are curved in an arc shape so as to be convex toward the front side. Further, in these guide holes 52, the distance L5 from the support shaft insertion hole 47 to the upper end is smaller than the distance L2, and the distance L6 from the support shaft insertion hole 47 to the lower end is larger than the distance L2. That is, L5 <L2 <L6.

  In the vicinity of each guide hole 52 of the handle portion fixing shaft 51, a coil spring 53 as an elastic body is attached to each support shaft 45. These coil springs 53 are attached so as to urge the handle portion fixing shaft 51 upward. For this reason, the handle portion fixing shaft 51 is normally positioned at the upper end portion of the guide hole 52 by the elasticity of the coil spring 53 to fix the rotation of the handle portion 14 in the front-rear direction, and the operator can By stepping down from the position of the handle portion 14, it moves downward along the guide hole 52 and is positioned at the lower end portion of the guide hole 52, so that the rotation of the handle portion 14 in the longitudinal direction can be released.

  Further, the handle portion 14 is formed such that the supported shaft portions 36 and 36 are longer than the longitudinal dimension of the mounting table 11. For this reason, as shown in FIG. 2, the handle portion 14 has the gripped portion 37 protruding from the front frame 21 of the mounting table 11 in the folded state and the holding table 55 provided on the mounting table 11. Are integrally held.

  The holding portion 55 is provided at one end portion of the upper surface of the front frame 21 of the mounting table 11, and is provided outside the main body support member 26, that is, at a position near one end portion in the longitudinal direction of the front frame 21. . For this reason, the holding portion 55 is positioned substantially on the same straight line as the one mounting bracket 35 along the longitudinal direction of the carriage 2. Further, as shown in FIG. 3, the holding portion 55 includes an attached portion 56 fixed to the side frame 23, an upper cover portion 57 provided rotatably on the attached portion 56, and these attached portions. A fixing portion 58 for fixing the attachment portion 56 and the upper cover portion 57 to each other is provided.

  The attached portion 56 is fixed to the side frame 23 with, for example, a bolt (not shown).

  The upper cover portion 57 has a semicircular concave arc-shaped arc surface 61 along the outer periphery of the handle portion 14. The upper cover portion 57 is rotated with respect to the attached portion 56 so that the arc surface 61 side faces the attached portion 56 side by the hinge portion 62 integrally provided on the center side in the width direction of the carriage 2. It is linked movably. Further, an engaging portion 63 that can engage with the fixing portion 58 is projected from an end portion of the upper cover portion 57 opposite to the hinge portion 62. The engaging portion 63 is bent in the direction opposite to the curve of the arc surface 61.

  The fixed portion 58 is pivotally supported by a shaft support portion 65 on the outer side in the width direction of the carriage 2 of the attached portion 56 so as to be rotatable along the same direction as the upper cover portion 57. The shaft support portion 65 is provided at one end of the fixed portion 58. The fixing portion 58 has a knob portion 66 protruding from the other end portion, and a substantially U-shaped engaging rod portion 67 is rotatably provided.

  The knob portion 66 is for the operator to pinch and rotate the fixing portion 58, and is slightly bent from the fixing portion 58 to the outside in the width direction of the carriage 2.

  The engagement rod portion 67 is formed by bending an elongated metal member that can be engaged with the engagement portion 63 into a U shape, and both end portions are respectively pivotable to both side portions on the other end side of the fixed portion 58. It is supported.

  The holding portion 55 engages the engagement rod portion 67 with the engagement portion 63 in a state where the outer periphery of the pivot support portions 36, 36 of the handle portion 14 in the folded state is sandwiched between the attachment portion 56 and the upper cover portion 57. In addition, the handle portion 14 is integrally held on the mounting table 11 by fixing the fixing portion 58 to the side portion of the attached portion 56.

  Here, the lower part of the mounting table 11 is not provided with a portion protruding from each rear wheel 13 in a side view with the floor surface. For this reason, the mounting table 11 can be moved by the rear wheel 13 while being inclined at a predetermined angle on the opposite side of the support portion 48 in a state where the handle portion 14 is held by the holding portion 55.

  As shown in FIG. 5, the vacuum cleaner main body 3 is detachable from a waste liquid tank 71 as a dust collecting unit for storing waste liquid sucked from the squeegee 4 and dust as a sucked object, and an upper portion of the waste liquid tank 71. And a suction portion 72 provided.

  The waste liquid tank 71 is formed in a bottomed cylindrical shape made of, for example, metal, and is detachably disposed on the mounting table 11 of the carriage 2. Further, the waste liquid tank 71 is supported by the main body support members 26 on the outer peripheral surface.

  In the suction portion 72, an electric blower 74 or a filter (not shown) is accommodated. Further, a power cord (not shown) for supplying electric power to the electric blower 74 is led out behind the suction portion 72 so as to be wound up. The suction portion 72 is provided with a bellows-cylindrical hose body 75 projectingly connected to the suction side of the electric blower 74. The hose body 75 has flexibility and stretchability, and a tip end portion thereof is detachably connected to the squeegee 4. On the other hand, the exhaust side of the electric blower 74 communicates with the waste liquid tank 71 through a filter or the like.

  The squeegee 4 sucks inhaled material such as waste liquid or dust with negative pressure generated by driving the electric blower 74, and is disposed in front of the front frame 21 of the mounting table 11 of the carriage 2, and the width of the vacuum cleaner 1. It is formed in a longitudinal shape along the direction, and is curved in an arc shape so that both end portions in the longitudinal direction are respectively positioned forward of the center portion in the longitudinal direction. The squeegee 4 includes squeegee rubbers 76 as flexible members on the front and rear sides. These squeegee rubbers 76 are grounded to the floor and suck in waste liquid on the floor.

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

  First, when cleaning, the power cord is connected to an outlet (not shown) while the hose body 75 is pulled forward from the cleaner body 3 placed on the carriage 11 of the carriage 2 and connected to the squeegee 4. Then, the electric blower 74 is driven, the handle portion 14 is gripped, and the vacuum cleaner 1 is run on the floor surface.

  Then, waste liquid or dust on the floor surface is sucked into the suction portion 72 from the squeegee 4 through the hose body 75 by driving the electric blower 74 and is stored in the waste liquid tank 71.

  When waste liquid and dust accumulate in the waste liquid tank 71, the suction part 72 is removed from the waste liquid tank 71, the waste liquid tank 71 is removed from the carriage 2, and the waste liquid accumulated in the waste liquid tank 71 is discarded. And when using again, after attaching the waste liquid tank 71 to the trolley | bogie 2, the suction part 72 is attached to the waste liquid tank 71. FIG.

  Further, when storing, the cleaner body 3 is removed from the mounting table 11 and the handle portion 14 is pushed downward while the handle portion fixing shaft 51 is stepped on with a foot, etc. The handle part 14 is rotated forward about the center and folded.

  In this state, with the handle portion 14 held between the attached portion 56 of the holding portion 55 and the upper cover portion 57, the engaging rod portion 67 of the holding portion 55 is engaged with the engaging portion 63, and the fixing portion 58 is The handle portion 14 is fixed to the side of the mounted portion 56 and held integrally with the mounting table 11, and the carriage 2 as a whole is raised, and the mounting table 11 is moved by the support portion 48 of the handle portion 14 and the rear portion of the rear wheel 13. Independently, the carriage 2 is stored separately from the cleaner body 3.

  Furthermore, when transporting the carriage 2 in this state, an operator grasps the gripped portion 37 of the handle portion 14 and tilts the carriage 2 in the direction opposite to the support portion 48 to pull the carriage 2 to the floor. Carry on the surface.

  And after transporting to a predetermined work place, when assembling the vacuum cleaner 1 again, it assembles in the reverse procedure to the time of accommodation.

  As described above, according to the above-described embodiment, the holding portion 55 provided on the mounting table 11 can reliably hold the handle portion 14 in a folded state, and the holding portion 55 can be a waste liquid tank of the cleaner body 3. Since the outer peripheral surface of the main body support member 26 that supports the outer peripheral surface of the 71 is positioned outside, the holding portion 55 can be easily attached and detached when the waste liquid tank 71 is attached to and detached from the mounting table 11.

  Further, by providing the holding unit 55 on the mounting table 11, the holding unit 55 can be used when the carriage 2 is traveling or the handle unit 14 is folded, as compared with the case where the holding unit 55 is provided on the handle unit 14. It is possible to improve the usability of the carriage 2 without being disturbed by moving.

  Further, by providing the holding portion 55 at the front end portion of the upper surface of one side frame 23 of the mounting table 11, the handle portion 14 is brought into close contact with the mounting table 11 without increasing the strength of the holding portion 55 more than necessary. It is possible to fix it more reliably in the state where it is in contact.

  Then, the upper cover 57 is rotatably provided on the attachment portion 56 fixed to the side frame 23 with the holding portion 55, and the engagement rod portion 67 of the fixing portion 58 is attached to the engagement portion 63 of the upper cover portion 57. By adopting a relatively simple configuration in which the attached portion 56 and the upper cover portion 57 are fixed to each other by being engaged, the manufacturing cost can be reduced and the manufacturability can also be improved.

  Furthermore, by providing the hinge portion 62 of the holding portion 55 on the center side in the width direction of the carriage 2, the upper cover 57 is not used when the holding portion 55 is not used as compared with the case where it is provided on both ends in the width direction of the carriage 2. Does not protrude outward from the mounting table 11, and the upper cover 57 can be prevented from being caught by an obstacle or the like during the traveling of the carriage 2 and being damaged.

  In addition, the rear portion of the rear wheel 13 protrudes rearward from the mounting table 11, and the support portion 48 of the handle portion 14 protrudes rearward from the mounting table 11 in a folded state, and the rear wheel 13 and the support portion 48 are mounted. By supporting the mounting table 11 in a self-supporting manner, for example, when storing the carriage 2, the vacuum cleaner body 3 is detached from the mounting table 11, the handle part 14 is folded, and the support part for the rear wheel 13 and the handle part 14 48 and 48 can store the mounting table 11 independently, thereby saving space.

  Furthermore, by holding the folded handle portion 14 on the mounting table 11 with the holding portion 55, it is possible to prevent the handle portion 14 from falling during storage.

  Since the mounting table 11 can be driven by the rear wheel 13 while the handle unit 14 is held by the holding unit 55, the vacuum cleaner main body 3 and the mounting table 11 are separately provided with the vacuum cleaner main body 3 removed. Since each can be transported, it is not necessary to lift the entire vacuum cleaner 1 having a relatively heavy weight even when climbing a step or the like, for example, when transporting, and the usability can be improved.

  In addition, since the carriage 2 is configured not to have a portion protruding from the rear wheel 13 in a side view, the carriage 2 may be dragged and damaged on the floor surface when the carriage 2 is transported. Can also be prevented.

  In particular, since the carriage 2 is used in a business-use vacuum cleaner 1 that is frequently mounted and transported, it is possible to save space during storage and improve portability, thereby improving the usability of the vacuum cleaner 1. It can be improved.

  In the above embodiment, the configuration of the holding portion 55 or the configuration and shape of the handle portion 14 is not limited to the above configuration.

  Moreover, the structure of the vacuum cleaner main body 3 etc. of the vacuum cleaner 1 is not limited to the said structure.

It is a perspective view which shows a part of trolley | bogie for electric vacuum cleaners of one embodiment of this invention. It is a side view which shows the folding state of the trolley | bogie for electric vacuum cleaners same as the above. It is a perspective view which shows the holding | maintenance part of the trolley | bogie for electric vacuum cleaners same as the above. It is a side view which shows a part of trolley for electric vacuum cleaners same as the above. It is a perspective view which shows the vacuum cleaner provided with the trolley | bogie for vacuum cleaners same as the above.

Explanation of symbols

2 Electric vacuum truck 3 Vacuum cleaner body 4 Squeegee as suction port
11 Mounting table as substrate
13 Rear wheels as wheels
14 Handle
26 Main body support member as support
36 Shaft support
37 gripped part
51 Handle fixed shaft
53 Coil spring as an elastic body
55 Holding part
56 Mounted part
57 upper cover
58 fixed part
71 Waste liquid tank as a dust collector
74 Electric blower

Claims (1)

A base body on which a vacuum cleaner body provided with an electric blower and a dust collecting part is detachably provided;
Provided in front of this base, and a suction port body that sucks in an object to be sucked by driving an electric blower,
A support portion provided on the base body and supporting an outer surface of the cleaner body;
A wheel rotatably provided on the base body, allowing the base body to travel and at least a part of which protrudes rearward from the base body;
A handle portion provided so as to be foldable by rotating with respect to the base body, and in this folded state, at least a part protrudes rearward from the base body and supports the base body together with the wheels so as to be able to stand by itself;
A handle portion fixing shaft for fixing the rotation of the handle portion;
An elastic body for urging the handle portion fixing shaft upward;
The handle portion in a folded state of the handle portion comprises a holding can holder on the substrate,
The handle portion is
A pair of pivotally supported parts pivotally supported on the base body;
A gripped portion spanned between the upper ends of these pivoted support portions,
The handle portion fixing shaft is spanned between the lower end sides of the pivoted support portion, and can be released from fixing the handle portion by moving downward against the urging force of the elastic body,
The holding part is
A mounted portion provided on the base body and located outside the support portion; and
A cover that is pivotally connected to the attached portion and holds either one of the pivoted support portions of the handle portion in a folded state between the attached portion and the attached portion;
A fixing portion is provided for fixing the attached portion and the cover to each other in a state where one of the pivot support portions of the handle portion is sandwiched between the attached portion and the cover . Bogie for electric vacuum cleaner.

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