JP5707223B2 - Suction part lifting device in vacuum cleaner - Google Patents

Description

  The present invention relates to a suction part lifting device in a vacuum cleaner having a suction part for vacuum sucking dust, a tank for storing sucked dust, and a device main body in which the suction part is arranged above the tank part. is there.

  In vacuum cleaners, the so-called disposable type is a current vacuum cleaner that sucks out foreign matter and collects it in a bag-like container, also called a pack filter, and discards the collected foreign matter together with the pack filter taken out from the main body. Has become the mainstream. When taking out the pack filter, it is necessary to open the container housing portion so as not to pressurize the bag-like container too much. This is because pressurizing the pack causes inconvenience such as leakage of dust collected inside.

  On the other hand, industrial vacuum cleaners, in particular, have a configuration in which a suction part for vacuuming dust and a tank for storing the sucked dust are arranged vertically, and the pack filter is placed in the tank. Therefore, in order to take out the pack filter, it is necessary to separate the suction part and the tank. However, in the arrangement where the suction part is located at the upper position, the suction part in which the motor, the suction blower and the secondary filter are incorporated is heavy, and there is a problem that it is heavy to lift and remove the suction part.

  In view of such a situation, the present inventor first developed a recovery tank attaching / detaching device in a vacuum cleaner and filed an application for the result, which is disclosed as Japanese Patent Application Laid-Open No. 2008-295783. The invention of the same number is equipped with pressurizing means including a telescopic pressurizing device in order to assist the contact and separation movement of the suction unit with respect to the recovery tank. In order to reduce the burden on the operator, a piston cylinder device called a gas spring is used for the pressurizing device, so that the distance at which the suction unit can be separated from the tank is affected by the stroke of the gas spring. Since it can only move up and down, it is difficult to move the suction unit by a necessary distance with respect to the tank. In addition, the use of gas springs increases production costs, which also increases product prices.

  Further, the gas spring has a structure in which oil and gas are sealed using a seal packing, and there is a risk of oil and gas leaks due to deterioration of the seal due to aging, atmosphere of use place, and the like. In the vacuum cleaner of the present invention, a clean room or the like is also a main target of use, but the oil and gas leaks also cause damage to the clean environment. In the case of a structure using a coil spring or the like, a load is always applied to the hinge portion of the elevating lever, and wear of the hinge portion is promoted to generate fine powder. Thus, in order to assist the contact / separation movement of the suction unit with respect to the recovery tank, it is not preferable to use springs regardless of gas type or spring type.

JP 2008-295783 A

  The present invention has been made paying attention to the above points, and the problem is that the vacuum cleaner can be operated easily without using a special device such as a gas spring or without using springs. It is to provide a suction unit lifting device. In addition, another object of the present invention is to easily obtain a necessary moving stroke so that a pack filter that sucks and collects fine dust can be easily taken out without applying pressure to the pack filter, and It is an object of the present invention to provide a suction unit lifting / lowering device in a vacuum cleaner that can sufficiently open an upper surface of a tank.

In order to solve the above-described problems, the present invention provides a vacuum cleaner having a suction part for vacuuming dust, a tank for storing the sucked dust, and an apparatus main body in which the suction part is disposed above the tank part. In order to detachably mount the lower tank, a mounting part provided at the lower part of the apparatus main body, and a handle pivotally supported at one end portion on the apparatus main body above the mounting part, In order to place the suction part on the tank to perform dust suction work and to separate the suction part above the tank to perform dust discharge work, the suction part is placed above the center of gravity to handle the handle. A suspension shaft that is pivotally supported on the suction part, and the suction point of the suction part of the suction part is suctioned when it moves rearward with respect to a perpendicular that passes through the pivot point position of the U-shaped handle tip part. So that the front part of the part is inclined upward At lower than the shaft support position, in which took measures that kick set the engaging mating portion engaging portion engages the handle side to the suction unit.

  The apparatus of the present invention is intended for a vacuum cleaner, and is particularly effective when applied to a vacuum cleaner that uses a pack filter that sucks and collects fine dust. The target vacuum cleaner has an apparatus main body, and has a configuration in which a tank is disposed below the apparatus body and a suction unit is disposed above the tank.

  In order to mount the lower tank in a detachable manner, the apparatus of the present invention has a mounting portion provided at a lower portion of the apparatus main body and a device main body above the mounting section so that the shaft can be rotated at one end. The suction part is placed above the center of gravity in order to perform the dust suction work by placing the suction handle on the supported handle and the tank, and separating the suction part above the tank for the dust discharge work. And a suspension shaft pivotally supported on the handle.

  Therefore, since the handle can constitute a lever having one end as a fulcrum, the hanging shaft as a point of action, and the other end as a force point, the lever can be easily lifted by this lever action. Further, since the suction portion is pivotally supported by the handle above the center of gravity, the suction portion can be always kept in an upright posture.

  The apparatus of the present invention has a tank positioning part provided at a place where the tank of the mounting part is placed, and the apparatus main body has left and right side frame parts that surround the left and right of the tank positioning part, and a standing frame that stands up on the back of the tank The handle is formed in a substantially U shape surrounding the front of the suction part, and is supported on the left and right side frame parts at the left and right tip parts of the handle. It is desirable that the fulcrum position of the suspension shaft is configured to be movable before and after a perpendicular line passing through the fulcrum position of the tip end portion of the U-shaped handle.

  In the above desirable configuration, in order to place the suction part on the tank and fix it to a posture for performing dust suction work, it has a lock pin provided on the left and right side frame part side of the apparatus main body, and the handle In order to fix the position, it has a lock part at the time of suction consisting of a lock pin insertion hole provided in the handle. The suction operation can be performed safely by fixing the posture where the suction portion is placed on the tank.

  Furthermore, the front part of the suction part is inclined upward when the pivot point position of the suspension shaft of the suction part moves rearward with respect to the perpendicular passing through the pivot point position of the substantially U-shaped handle tip. In addition, it is desirable to provide an engaging mating part in the suction part that engages with the engaging part on the handle side below the position of the fulcrum of the suspension shaft. As a result, the front part of the suction part separated upward is further inclined upward, and the space on the tank can be further expanded.

A locking lever provided on the left and right frame side of the apparatus main body and a handle at a position to be locked to the locking lever in order to fix the suction part above the tank and fix the posture to perform dust discharge work It is assumed that it has a lock part at the time of discharge which consists of a locking pin provided in. As a result, the dust can be safely discharged.

  Since the present invention is configured and operates as described above, a vacuum that can be easily operated by the lever action of the handle without using a special device such as a gas spring and without using springs. The suction part raising / lowering apparatus in a vacuum cleaner can be provided. In addition, according to the present invention, the necessary moving stroke can be easily obtained and the upper surface of the tank can be sufficiently opened. Therefore, the pack filter that sucks and collects fine dust is added to the pack filter. There is an effect that it can be easily taken out without applying pressure.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows an example of a vacuum cleaner 10 to which a suction unit lifting / lowering device according to the present invention is applied. Reference numeral 11 denotes a suction unit for vacuum suction of dust, and 12 denotes a tank for storing the sucked dust. The suction part 11 is disposed above the tank 12 and includes a secondary filter 11a having a cylindrical shape. The tank 12 is detachably mounted on the apparatus main body 17, and a primary filter 12a is disposed inside. 11 b is a cover that covers and closes the opening of the tank 12. It is assumed that the primary filter 12a is a filter having a performance similar to that of a HEPA filter, and the secondary filter 11a is a HEPA filter.

  The suction unit 11 includes a lower main blower 13, a motor 14 that drives the main blower 13, and a cooling blower 15 that is also driven by the motor 14, and the cooling blower 15 draws cooling air from the upper suction port 15a. Suction. The tank 12 has a connection port portion 16 on a side surface, and a suction pipe having a suction nozzle or the like or a connection pipe (not shown) is detachably attached to the connection port portion 16. Reference numeral 16a denotes a lock bolt, which is screwed into the female thread portion of the connection port portion 16 and attached thereto, and is urged so that the distal end portion 16b enters the lock groove of the suction pipe and is prevented from coming off. The spring built in for urging the tip 16b only acts on the attachment / detachment of the suction pipe, and the effect is negligible because it is very small. A primary filter 12a is detachably attached to the inside of the connection port 16 at the suction port 12b.

  The apparatus main body 17 includes a mounting portion 18 provided at a lower portion thereof, left and right side frame portions 19l and 19r surrounding the left and right of the mounting portion 18, a standing frame portion 19b rising on the back surface of the tank 12, and a conductive material. It has a moving means. The mounting portion 18 is provided with a tank positioning portion 18a at a location where the tank 12 is placed. The positioning portion 18a shown in the figure is formed by bolting a silicon rubber piece and is installed at four locations in contact with the outer peripheral surface of the tank. (See FIG. 2 etc.). The left and right side frame portions 19l and 19r are also portions that provide a mounting portion for the handle 21, as will be described later, with the lower end connected to the front portion of the mounting portion 18 and the upper end connected to the standing frame portion 19b at the upper part of the tank. Has been. The illustrated moving means having conductivity includes casters 20a and 20b each having a wheel made of conductive rubber, a metal axle, and a bearing portion.

  A substrate 17a is attached near the base of the left and right side frame portions 19l and 19r, which is located above the placement portion 18 of the apparatus main body 17, and the handle 21 rotates at one end portion 21a on the substrates 17l and 17r. It is pivotally supported. The illustrated handle 21 is formed in a substantially U shape surrounding the front surface of the suction portion 11, and the left and right tip portions of the U shape serve as one end portion 21 a of the handle 21 and are pivotally supported on the substrates 17 l and 17 r on the left and right side frame portions. It is a thing. The handle 21 constitutes a lever, with one end 21a serving as a fulcrum and the other end 21b of the U-shaped bent portion serving as a leverage of the lever.

  In order to place the suction part 11 on the tank and perform dust suction work, and to separate the suction part 11 above the tank 12 and perform dust discharge work, the suction part 11 is moved from the position of the center of gravity G. Is also provided with a suspension shaft 22 pivotally supported by the handle 12 at a higher position. That is, the suction portion 11 is suspended from the handle 21 by the suspension shaft 22 so as to be rotatable at a position higher than the position of the center of gravity G, and always takes a constant upright posture. Further, the fulcrum position of the suspension shaft 22 of the suction part 11 is configured to be movable before and after a perpendicular line passing through the one end 21a which is the fulcrum position of the U-shaped handle 21. The hanging shaft 22 serves as an action point of the lever.

In order to fix the handle body 17 to the lock pin 23a provided on the left frame portion 19l shown in the drawing in order to fix the posture to place the suction portion 11 on the tank and perform dust suction work, , And a suction lock portion 23 formed by an insertion hole 23b of a lock pin 23a provided on the handle 21 (see FIGS. 3 and 4). In the illustrated example, since the lock portion 23 is attached only to the substrate 17l of the left frame portion 19l, the lock pin 23a is provided so as to be able to protrude outward from its plate surface.

  Further, when the shaft fulcrum position of the suspension shaft 22 of the suction unit 11 moves from the front to the rear with respect to the perpendicular V passing through the shaft fulcrum position (21a) of the substantially U-shaped handle tip, the suction unit 11 is moved. As shown in FIG. 5, the engaging counterpart 25 that engages with the engaging portion 24 on the handle side is provided below the suction fulcrum position of the suspension shaft 22 so that the front portion thereof is inclined upward (see FIG. 5). On the side. In the illustrated example, a pin is attached to the handle 21 inward as the engaging portion 24, and the engaging counterpart 25 is a strip-like plate on the left and right sides of the cylindrical secondary filter 11 a of the suction portion 11. The member is attached, and the rear edge becomes the engagement counterpart 25.

  Furthermore, in the present invention, the locking lever 26 provided on the left and right side frame portion side of the apparatus main body 17 and the above-mentioned engagement are provided in order to fix the suction portion 11 above the tank 12 and fix it to a posture for discharging dust. A discharging lock portion 29 is provided which includes a locking pin 27 provided on the handle 21 at a position where the locking lever 26 is locked and a receiving pin 28 that receives the handle 21 at a position moved rearward. In the illustrated example, the locking lever 26 is rotatably supported on the substrate 17l of the left frame portion 19l by using a shaft 26a, and is locked with a locking pin 27 attached to the handle 21 outward. It is installed in a position facing forward at the position (see FIGS. 1, 3 to 7). The locking lever 26 only needs to be able to rotate up and down for engagement and disengagement with the locking pin 27.

  In the apparatus of the present invention having such a configuration, when the vacuum cleaner 10 is in use, the tank 12 is positioned by the positioning portion 18a made of a silicon rubber piece. Since the opening of the tank 12 is covered with the cover 11b of the suction part 11, the load of the suction part 11 is applied, and furthermore, the lock pin 23a of the lock part 23 at the time of suction is inserted into the insertion hole 23b. Stable in an airtight state. Therefore, fine dust is effectively sucked by the primary filter 12a using the filter having the performance equivalent to the HEPA filter and the secondary filter 11a using the HEPA filter through the operation of the suction pipe having the suction nozzle and the like. Can do.

  After the above operation is completed, in order to separate the suction portion 11 above the tank 12 and perform the dust discharge operation, the lock pin 23a is pulled out from the insertion hole 23b to release the suction lock portion 23, and then the handle 21 When the other end portion 21b is lifted and rotated backward, the handle 21 is received by the receiving pin 28 on the rear side, and the locking pin 27 pushes the locking lever 26 up once and locks it to the hook portion 26b. The front portion of the suction portion 11 is inclined upward, and the opening of the tank 12 can be greatly opened. Therefore, the pack-shaped primary filter 12a in which fine dust and the like are sucked and collected can be taken out of the tank without difficulty. As described above, according to the present invention, the upper surface of the tank can be sufficiently opened, and there is no fear of pressurizing the primary filter 12a, so there is no risk of leaking fine dust once collected. Because no springs are used, the clean environment is not impaired.

It is side explanatory drawing which shows an example of the vacuum cleaner to which the suction part raising / lowering apparatus which concerns on this invention is applied. It is a front view of a vacuum cleaner same as the above. It is a perspective view which shows an example of the suction part raising / lowering apparatus in the same as the above. Similarly, it shows a part of the suction unit lifting device, A is an unlocked state, B is a plan view showing a locked state. It is a partial front view which shows the state which moved the suction part back upward similarly. It is an enlarged partial side view at the time of suction work It is explanatory drawing of the state which takes out a primary filter.

DESCRIPTION OF SYMBOLS 10 Vacuum cleaner 11 Suction part 12 Tank 13 Blower 14 Motor 15 Cooling blower 16 Connection port part 17 Apparatus main body 18 Mounting part 19l, 19r Left and right side frame part 20a, 20b Conductive caster 21 Handle 22 Hanging shaft 23 Suction Hour lock part 24 Engagement part 25 Engagement partner part 26 Locking lever 27 Locking pin 28 Receiving pin 29 Locking part at discharge

Claims (4)

In a vacuum cleaner having a suction part for vacuum sucking dust, a tank for storing sucked dust, and an apparatus main body in which the suction part is arranged above the tank part,
In order to detachably mount the lower tank, a mounting part provided at the lower part of the apparatus main body, a handle pivotally supported at one end on the apparatus main body above the mounting part, and the above In order to place the suction part on the tank and perform dust suction work, and to separate the suction part above the tank and perform dust discharge work, the suction part is pivoted to the handle above the center of gravity. A suspended shaft that is supported ,
When the pivot point position of the suspension shaft of the suction part moves rearward with respect to the perpendicular passing through the pivot point position of the substantially U-shaped handle tip, the front part of the suction part is inclined upward. The suction part ascending / descending in the vacuum cleaner is characterized in that an engagement partner part that engages with the engagement part on the handle side is provided below the shaft fulcrum position of the suspension shaft. apparatus. The mounting portion has a tank positioning portion provided at a place where the tank is mounted, and the apparatus main body includes left and right side frame portions that surround the left and right sides of the tank positioning portion, a standing frame portion that rises on the back surface of the tank, and a conductive material. And the handle is formed in a substantially U shape surrounding the front surface of the suction part, and is pivotally supported on the left and right frame parts at the left and right tip parts of the handle, and the suspension part has a suspension shaft. The suction part raising / lowering device in the vacuum cleaner according to claim 1, wherein the shaft fulcrum position is movable before and after a vertical line passing through the shaft fulcrum position of the U-shaped handle. Lock pins provided on the left and right side frame parts of the main body of the device to lock the suction part on the tank and place it in a dust-sucking position, and a lock provided on the handle to fix the handle position The suction part raising / lowering device in the vacuum cleaner of Claim 2 which has a lock part at the time of suction consisting of the insertion hole of a pin. A locking lever provided on the left and right frame side of the apparatus main body and a handle at a position to be locked to the locking lever in order to fix the suction part above the tank and fix the posture to perform dust discharge work 4. A suction part lifting / lowering device in a vacuum cleaner according to claim 2 or 3, further comprising a locking pin provided at the time of discharging and a locking pin that receives the handle pin at a position moved rearward.

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