JP4861908B2 - Vacuum cleaner - Google Patents

Description

  The present invention includes an electric blower and a dust collecting part in a main body case, the main body case has an exhaust port, and the exhaust port includes an electric filter including an exhaust cover for holding the filter body. It relates to a vacuum cleaner.

  This type of vacuum cleaner is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-234625 (Patent Document 1), Japanese Patent Application Laid-Open No. 4-285518 (Patent Document 2), and Japanese Patent Application Laid-Open No. 9-75280 (Patent Document 2). Has been.

  The problem of this type of vacuum cleaner will be described with reference to FIGS.

  FIG. 7 is a view showing a use state in a conventional vacuum cleaner. FIG. 8 is a cross-sectional view of a vacuum cleaner body 501 in a conventional vacuum cleaner.

  The vacuum cleaner body 501 is provided with a dust collection chamber 601, an electric blower 602 that generates a suction force, and a control circuit 603 that controls the operation of the vacuum cleaner body 501.

  The control circuit 603 drives the electric blower 602 according to the input of the operation unit 502 to generate a suction force.

  Due to this suction force, dust-containing air is sent to the dust collection chamber 601 from the suction body 505 connected to the electric vacuum cleaner main body 501 via the extension pipe 503 and the hose 504, and provided in the dust collection chamber 601. The first filter body 604 collects dust.

  The air that has passed through the first filter body 604 passes through the electric blower 602 and is then discharged out of the vacuum cleaner body 501 from the exhaust port 605.

  The exhaust port 605 is provided with a second filter body 606, and the second filter body 606 is held by an exhaust cover 607. The second filter body 606 collects dust that could not be collected by the first filter body 604.

  FIG. 9 is a diagram showing a vertically placed storage state of the vacuum cleaner main body 501 in a conventional vacuum cleaner, and FIG. 10 is a diagram showing an attached state of the exhaust cover 607 in the conventional vacuum cleaner.

  In the vertically stored state, the vacuum cleaner body 501 is supported by three points: a support protrusion 801 provided integrally with the exhaust cover 607 and wheels 701 provided on the left and right sides of the vacuum cleaner body 501 one by one. The support protrusion 801 has a shape having a recess 802 inside.

  The exhaust cover 607 is fixed to the electric vacuum cleaner main body 501 by a cover set screw 803. By using the cover set screw 803, the exhaust cover 607 can be easily attached and detached, and the user can remove the second filter body 606 and perform maintenance.

  Since the attachment portion of the cover set screw 803 is provided in the recess 802, the cover set screw 803 does not protrude from the surface of the cleaner body 501, and the design of the vacuum cleaner body 501 is improved by the cover set screw 803. There is no loss.

  Furthermore, since the user does not touch the cover set screw 803 directly, there is no risk of injury by touching the burr at the tip of the cover set screw 803 generated when the cover set screw 803 is tightened. A vacuum cleaner can be provided.

  However, the conventional vacuum cleaner has the following problems.

JP-A-10-234625 JP-A-4-285518 JP-A-9-75280

  In conventional vacuum cleaners, the exhaust cover has a shape with a protrusion, so if the user accidentally drops the vacuum cleaner while carrying the vacuum cleaner in a vertically stored state, The impact was concentrated and the exhaust cover was easily damaged.

  In recent years, in order to improve the design, the number of vacuum cleaners adopting transparent ABS as the material of the exhaust cover is increasing. In general, since transparent ABS is more fragile than opaque ABS, there is a greater concern about damage to the exhaust cover due to falling of the vacuum cleaner body.

  As a measure for preventing damage to the exhaust cover, reinforcement by increasing the thickness of the exhaust cover can be considered. However, in this case, the weight of the exhaust cover increases, and the usability of the vacuum cleaner is deteriorated.

  In view of the above-described problems, an object of the present invention is to provide a vacuum cleaner that is durable, easy to use, and excellent in design.

The present invention includes an electric blower that generates a suction force, a main body case in which a dust collecting part that collects dust that has been absorbed is housed, an upper main body case that fits up and down where the main body case is formed, and a lower main body case, In the vacuum cleaner comprising an exhaust port provided on the rear side of the upper body case, an exhaust filter body provided in the exhaust port, and an exhaust cover for holding the exhaust filter body so as to hold it from the outside. A supporting projection for supporting the case in a vertically placed state is integrally provided on the rear outer wall surface of the upper body case , and the supporting projection has a recess recessed forward from the rear end. A cover set screw is provided which is screwed to the extent that it falls into the recess and fastens and fixes the exhaust cover .

  According to the present invention, since the support protrusion is integrally provided on the rear outer wall surface of the main body case, a durable electric vacuum cleaner in which the exhaust cover is not damaged by excessive force even when the main body case is placed vertically. Can be provided.

  Further, according to the present invention, the cover fixing screw is disposed on the rear side of the main body case of the vacuum cleaner by disposing the mounting portion of the cover fixing screw for fixing the exhaust cover in the concave portion provided inside the support protrusion of the main body case. Since it does not protrude on the surface, the exhaust cover can be fixed without impairing the design of the vacuum cleaner body.

  In addition, since the user does not touch the cover set screw directly, there is no risk of injury by touching the burr at the tip of the cover set screw that was generated when the cover set screw was tightened. Can be provided.

  In addition, by providing the support protrusion integrally with the main unit case, if the user accidentally drops the vacuum cleaner while carrying the main unit case in the vertical position, it will directly impact the exhaust cover. Is not added, so the exhaust cover is not easily damaged. As a result, it is easy to adopt a transparent ABS or the like having excellent design properties as a material of the exhaust cover, while having a brittle property.

  Further, since it is not necessary to reinforce the exhaust cover, it is possible to reduce the weight of the exhaust cover and improve the usability of the electric vacuum cleaner.

  FIG. 2 is a view showing a use state of the vacuum cleaner in the embodiment of the present invention, and FIG. 3 is a sectional view of the main body 201 of the vacuum cleaner in the embodiment of the present invention.

  The vacuum cleaner main body 201 is provided with a dust collection chamber 301, an electric blower 302 that generates suction force, and a control circuit 303 that controls the operation of the vacuum cleaner main body 201.

  A main body case 104 that is an outer shell of the electric vacuum cleaner main body 201 is formed by an upper main body case 1041 and a lower main body case 1042 that are aligned vertically.

  The electric blower 302 is housed in the main body case 104 while being covered with the inner case 308.

  The control circuit 303 drives the electric blower 302 according to the input of the operation unit 202 to generate a suction force. Due to this suction force, dust-containing air is sent to the dust collection chamber 301 from the suction body 205 connected to the vacuum cleaner main body 201 through the extension pipe 203 and the hose 204, and is provided in the dust collection chamber 301. The first filter body 304 collects dust.

  Note that the opposite end of the hose 204 on the extension tube 203 side is detachably connected to the front end of the electric vacuum cleaner main body 201.

  After passing through the electric blower 302, the air that has passed through the first filter body 304 is discharged from the opening 309 provided at the lower portion of the inner case 308, passes through the exhaust passage 311 in which the sound absorbing material 310 is disposed, and exhausted. It is discharged from the mouth 305 to the outside of the vacuum cleaner main body 201. The dotted line in FIG. 3 has shown the said air flow in the vacuum cleaner main body 201. FIG.

  The air passing through the electric blower 302 is discharged from an opening 309 provided at the lower part of the inner case 308, and the exhaust port 305 is provided above the main body 201 of the vacuum cleaner. A long flow path for drawing a character is provided, and the sound absorbing material 310 is arranged in the long flow path to reduce the operation sound of the main body of the vacuum cleaner.

  The exhaust port 305 is provided with a second filter body 306 that is an exhaust filter, and the second filter body 306 is held by an exhaust cover 307. The second filter body (exhaust filter) 306 collects dust that could not be collected by the first filter body 304.

  FIG. 4 is a diagram showing a vertically stored state of the electric vacuum cleaner main body 201 in the embodiment of the present invention, and FIG. 1 is a diagram showing an attached state of the exhaust cover 307 in the embodiment of the present invention.

  The vacuum cleaner main body 201 is supported by three points, that is, a support protrusion 101 provided integrally with the main body case 104 and a large wheel 401 provided on each of the left and right sides of the vacuum cleaner main body 201 in the vertically stored state. The

  Since the support protrusion 101 exists in the upper main body case 1041 that forms the main body case 104, it is formed integrally with the upper main body case 1041. The large wheels 401 are provided so as to be located on both sides of the rear portion of the main body case 104.

  The caster 900 is provided so as to be positioned closer to the front side of the bottom of the main body case 104. The large wheel 401 has a larger outer diameter than the small wheel 901 provided on the caster 900. The electric vacuum cleaner main body 201 is supported by three points, that is, a large wheel 401 provided on each of the left and right sides and a support protrusion 101.

  That is, as shown in FIG. 3, a line 1001 connecting the rear end of the support protrusion 101 and the outer periphery of the large wheel 401 is located outside the rear outer wall surface of the main body case 104. That is, the outer periphery of the large wheel 401 protrudes outward from the rear outer wall surface of the main body case 104.

  The support projection 101 that supports the entire weight of the electric vacuum cleaner main body 201 at the three points of the two large wheels 401 and the support projection 101 is provided in the main body case 104. It is possible to provide a vacuum cleaner having a strong structure without applying an excessive load to the cover.

  Further, since the support protrusion 101 is provided on the upper main body case 1041, the distance between the support protrusion 101 and the installation point on the outer periphery of the large wheel 401 is increased. For this reason, the vertical placement of the vacuum cleaner main body 201 is more stable.

  The support protrusion 101 has a recess 102 inside. The recess 102 is recessed forward from the rear end. A screw insertion hole 1031 is formed in the recess 102 so as to pass through to the back.

  The exhaust cover 307 is fastened and fixed by the cover set screw 103 inserted into the screw insertion hole 1031. The attachment of the exhaust cover will be described with reference to FIG. 1, FIG. 5, and FIG.

  The exhaust cover 307 is attached to the upper body case 1041 of the body case 104 so as to cover the exhaust port 305.

  The exhaust cover 307 includes a screw boss 105 formed so as to hang downward from the rear lower end, and a locking claw 1050 formed so as to hang downward from the rear side to a front position. Further, the exhaust cover 307 has an escape hole 1070 that fits into the lead-out cord outlet 1060 from the outside.

  The upper body case 1041 has a boss insertion groove 106 that opens upward at which the screw boss 105 of the exhaust cover 307 is inserted at the base of the support protrusion 101. Further, although not shown in the drawing, the locking claw 1050 is also formed in the upper body case 1041 with an insertion locking groove.

  As described above, by attaching the exhaust cover 307 to the upper main body case 1041 of the main body case 104 so as to cover the exhaust port 305, the screw boss 105 fits into the boss insertion groove 106, and the locking claw 1050 is inserted into the insertion locking groove. Locked.

  The screw boss 105 has a screw hole 1055. The screw hole 1055 is placed so as to coincide with the screw insertion hole 1031 when the exhaust cover 307 is attached to the upper main body case 1041. That is, the screw insertion hole 1031 is formed in the recess 102 so as to penetrate toward the screw hole 1055 of the screw boss 105.

  The exhaust cover 307 is fastened and fixed to the upper body case 1041 by screwing the cover set screw 103 inserted from the screw insertion hole 1031.

  Since the exhaust cover 307 is fastened and fixed by the cover set screw 103 and further locked by the plurality of locking claws 1050, reliable fixing is provided.

  Further, the screw boss 105 of the exhaust cover 307 is inserted into the boss insertion groove 106 provided at the base of the support projection 101 in the direction of arrow A, and then screwed with the cover set screw 103. In this way, the exhaust cover 307 attached and fixed to the upper body case 1041 is not subjected to the load of the vacuum cleaner body in a state in which the vacuum cleaner body is placed vertically.

  Maintenance of the second filter body 306 is easily performed by removing the cover set screw 103 and removing and attaching the exhaust cover 307 by tightening.

  Even when the exhaust cover 307 is removed, the vacuum cleaner main body is stably placed in a vertically placed state by the support protrusion 101 provided integrally with the upper main body case 1041 as usual. The main body of the vacuum cleaner is hard to roll and easy to handle.

  Further, a recessed portion 102 is provided in the attachment portion of the cover set screw 103 of the support protrusion 101. For this reason, the cover set screw 103 does not protrude from the surface of the electric vacuum cleaner main body 201, and the design of the electric vacuum cleaner main body 201 is not impaired by the cover set screw 103.

  Furthermore, the user does not touch the cover set screw 103 directly. For this reason, there is no fear that a finger touches the burr | flash at the front-end | tip of the cover set screw 103 at the time of fastening the cover set screw 103, and a more safe vacuum cleaner can be provided.

  Further, since the support protrusion 101 has a horizontally long elliptical shape extending in the horizontal direction when viewed from the rear side, the installation protrusion 101 for supporting the three-point support has a large installation width, and stable installation is performed.

  In addition, by providing the support protrusion 101 integrally with the main body case 104, if the user accidentally drops the vacuum cleaner main body 201 while carrying it in the vertically stored state, the exhaust cover 307 is attached to the exhaust cover 307. There is no direct impact. For this reason, the exhaust cover 307 is not easily damaged. As a result, it is easy to adopt a transparent ABS or the like having excellent design properties as a material of the exhaust cover 307, while having a brittle property.

  Further, since it is not necessary to reinforce the exhaust cover 307, the exhaust cover 307 can be reduced in weight and the usability of the electric vacuum cleaner can be improved.

  The main body case 104 of the above embodiment has an upper main body case 1041 and a lower main body case 1042 that are vertically aligned. The invention can be applied.

The main advantages of the invention according to the above examples are summarized below.
1. Since the support protrusion is integrally provided on the rear outer wall surface of the main body case, it is possible to provide a durable electric vacuum cleaner in which the exhaust cover is not damaged by excessive force even when the main body case is placed vertically.
2. By installing the cover fixing screw fixing part for fixing the exhaust cover in the recess provided inside the support projection of the main body case, the cover fixing screw will not protrude on the surface of the vacuum cleaner body. The exhaust cover can be fixed without impairing the design of the main body.
3. Since the user does not touch the screw directly, there is no fear of the finger touching the burr at the tip of the screw generated when the screw is tightened, and a safer vacuum cleaner can be provided.
4). By providing the support protrusions integrally with the main unit case, if the user accidentally drops the vacuum cleaner while carrying it in the vertical storage position, the exhaust cover may be directly impacted. The exhaust cover is not easily damaged. As a result, it is easy to adopt a transparent ABS or the like having excellent design properties as a material of the exhaust cover, while having a brittle property.
5. Since it is not necessary to reinforce the exhaust cover, it is possible to reduce the weight of the exhaust cover and improve the usability of the vacuum cleaner.
6). Since the supporting protrusion is provided integrally with the main body case, the electric vacuum cleaner main body can be stably placed in the vertical state even when the exhaust cover is removed.

The figure which shows the attachment state of the exhaust cover in this invention Example. The figure which shows the use condition of a vacuum cleaner in this invention Example. Sectional drawing of the vacuum cleaner main body in this invention Example. The figure which shows the vertical installation accommodation state of the vacuum cleaner main body in this invention Example. The figure which shows the exhaust cover simple substance in this invention Example. It is the figure which looked at the vacuum cleaner main body from which the exhaust cover was removed in the Example of this invention from the rear side. The figure which shows the use condition in the conventional vacuum cleaner. Sectional drawing of the vacuum cleaner main body in the conventional vacuum cleaner. The figure which shows the vertical installation accommodation state of the vacuum cleaner main body in the conventional vacuum cleaner. The figure which shows the attachment state of the exhaust cover in the conventional vacuum cleaner.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Supporting protrusion part, 102 ... Recessed part, 103 ... Cover set screw, 104 ... Main body case, 105 ... Screw boss, 106 ... Boss insertion groove, 201 ... Electric vacuum cleaner main body, 202 ... Operation part, 203 ... Extension pipe, 204 ... Hose, 205 ... suction body, 301 ... dust collector, 302 ... electric blower, 303 ... control circuit, 304 ... first filter body, 305 ... exhaust port, 306 ... second filter body, 307 ... exhaust cover, 308 ... inner case, 309 ... opening, 310 ... sound absorbing material, 311 ... exhaust passage, 401 ... large wheel.

Claims (6)

An electric blower that generates a suction force, a main body case in which a dust collecting part that collects the dust that has been sucked is housed, an exhaust port provided on the rear side of the main body case, and an exhaust filter body provided on the exhaust port; In the vacuum cleaner provided with an exhaust cover that holds the exhaust filter body so as to be pressed from the outside,
A supporting protrusion for supporting the main body case in a vertically placed state is integrally provided on the rear outer wall surface of the main body case , and the supporting protrusion has a concave portion that is recessed forward from the rear end. A vacuum cleaner characterized by comprising a cover set screw that is screwed to the extent that it falls into the recess and fastens and fixes the exhaust cover . An electric blower that generates a suction force, a main body case in which a dust collecting part that collects the dust that has been sucked is housed, an exhaust port provided on the rear side of the main body case, and an exhaust filter body provided on the exhaust port; An exhaust cover for holding the exhaust filter body from outside, a caster provided at the bottom of the main body case, and an electric wheel provided on both sides of the rear portion of the main body case and having larger wheels larger than the small wheels provided on the caster. In the vacuum cleaner,
A support protrusion for supporting the main body case in a vertically placed state is integrally provided on a rear outer wall surface of the main body case,
Together to project the periphery of the large wheel so that a line connecting the outer periphery of the rear end of the support protrusion large wheels is the outer wall plane of the main body case outside the outer wall plane of the main body case, wherein The support protrusion has a recess recessed forward from the rear end, and is provided with a cover set screw that is screwed to the extent that the head falls into the recess and fastens and fixes the exhaust cover . An electric blower that generates a suction force, a main body case in which a dust collecting part that collects the dust that has been sucked is accommodated, an upper main body case that fits up and down, and a lower main body case that form the main body case, and the upper main body case In a vacuum cleaner provided with an exhaust port provided on the rear side, an exhaust filter body provided at the exhaust port, and an exhaust cover that holds the exhaust filter body so as to hold it from the outside.
Support protrusions for supporting the main body case in a vertically placed state are integrally provided on the rear outer wall surface of the upper main body case , and the support protrusions have a recess recessed forward from the rear end, A vacuum cleaner comprising a cover set screw that is screwed to such an extent that the portion falls into the recess and fastens and fixes the exhaust cover . In the vacuum cleaner as described in any one of Claims 1-3,
The exhaust cover has a screw boss that hangs downward from a rear lower end, the body case has a screw boss inserted into a base of the support protrusion, and has a boss insertion groove that opens upward, and the support protrusion has It has a screw insertion hole that penetrates toward the screw hole of the screw boss, and is provided with a cover set screw that is inserted from the screw insertion hole and screwed into the screw hole to fasten and fix the exhaust cover. Electric vacuum cleaner . In the vacuum cleaner as described in any one of Claims 1-3
The vacuum cleaner according to claim 1, wherein the support protrusion has a horizontally long elliptical shape extending in a lateral direction when viewed from the rear side . The vacuum cleaner according to claim 2,
The vacuum cleaner characterized in that the main body case is maintained in a vertically placed state by three-point support of the two large wheels and the support protrusion .

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