JPH0128757Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a suction port body for a vacuum cleaner.

(Prior Art) Conventionally, as described in, for example, Japanese Utility Model Application Publication No. 11441/1983, a suction port body formed in the shape of a housing by an upper case and a lower case is provided with an upper case and a lower case. A rotating brush chamber containing a rotating brush and a fan chamber communicating with the rotating brush chamber and containing a fan for rotationally driving the rotating brush are formed by upper and lower partition walls, respectively. A suction port is formed on the lower surface of the lower case, which is the lower side, and a notch is formed on the rear side of the suction port body facing the fan chamber, and the suction port rotates to the rear side of the suction port body through this notch. A structure in which a pipe is attached so as to be movable up and down, and a bumper is attached to the outer periphery of the suction port main body, which is formed into an almost frame shape with a portion corresponding to the notch opening cut out, and is held between the upper case and the lower case. A vacuum cleaner that rotates a fan in the fan chamber by the suction air that passes sequentially from the suction port to the rotating brush chamber, the fan chamber, and the rotating tube, and the rotation of the fan rotates the rotating brush to scrape up and suck dirt. A suction port body is known.

(Problem to be solved by the invention) As mentioned above, in the suction port body of a vacuum cleaner in which the bumper is sandwiched between the upper case and the lower case, the notch through which the rotary pipe is inserted is located at the back of the suction port body. Since the bumper is located on the side, the bumper has to be cut at the position of the notch, and it is not possible to make the bumper endless and surround the entire circumference of the suction port body.
Therefore, conventionally, the bumper was easily rolled up at a position near the notch opening.

In addition, with the suction port body of the vacuum cleaner as described above, there was a risk that leakage air could enter from other than the suction port, reducing the suction power of the suction air. It is necessary to seal any areas where there is a risk, such as the gap between the upper and lower partition walls that form the fan chamber.

The present invention has been devised in view of the above points, and an object of the present invention is to provide a suction port body for a vacuum cleaner that can prevent the bumper from rolling up, prevent leakage air from entering from other than the suction port, and prevent a decrease in suction power. The purpose is to

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a suction port provided in the upper case and the lower case, respectively, in the suction port body formed in the shape of a housing by the upper case and the lower case. A rotating brush chamber containing a rotating brush and a fan chamber communicating with the rotating brush chamber and containing a fan for rotationally driving the rotating brush are formed by upper and lower partition walls,
Further, a suction port is formed on the lower surface of the lower case, which is the lower side of the rotating brush chamber, and a notch is formed on the rear side of the suction port body facing the fan chamber, and the A rotary tube is attached to the rear side of the suction port body so as to be able to move up and down, and furthermore, the outer periphery of the suction port body is formed into an almost frame shape with a portion corresponding to the notch opening cut out, and the upper case and the lower case are connected to each other. In the suction port body of a vacuum cleaner to which a bumper is attached, which is sandwiched by the fan chamber, a seal portion which is sandwiched between the upper and lower partition walls forming the fan chamber is integrated with the bumper and near the notch of the bumper. It is formed to protrude forward from both ends where it is located.

(Function) In the suction port body of the vacuum cleaner of the present invention, when assembled,
A roughly frame-shaped bumper with a portion cut out is sandwiched between the upper case and the lower case, and these two cases are fixed to each other.In conjunction with this, a seal part integrated with the bumper is provided on each of the cases, and the fan It is sandwiched between the upper and lower partition walls that form the chamber. At this time, a rotating brush, a fan, and a rotating tube are incorporated into the suction port body made up of both cases, and the rotating tube is made to protrude outward from a notch on the rear side of the suction port body without a bumper. When cleaning, the fan is rotated by the suction air that is sucked in from the suction port along with dirt and passes through the rotating brush chamber and fan chamber to the rotating pipe, and the fan rotates the rotating brush to scrape up the dirt. . At this time, the seal portion between the upper and lower partition walls forming the fan chamber prevents leakage air from flowing into the fan chamber, and prevents the rotation of the fan and the rotating brush from decreasing. Further, since the seal portions held between the upper and lower partition walls protrude from both ends of the bumper located near the notch, the bumper is prevented from rolling up from these portions.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The suction port body of this embodiment includes a suction port body 1 formed in the shape of a substantially rectangular parallelepiped housing, and a rotary tube 2 attached to the center of the rear wall of the suction port body 1 so as to be vertically movable. , a rotary brush 3 rotatably provided within the suction port body 1, and a fan 4 for rotationally driving the rotary brush 3.

The suction port body 1 is composed of an upper case 11 and a lower case 12, and inside thereof is a partition wall 13 erected along the longitudinal center line of the suction port body 1.
The front side is the rotating brush chamber 14 containing the rotating brush 3, and the rear side is further divided into three chambers by partition walls 15 and 16, and the center is the rotating brush chamber 14 containing the rotating brush 3. 4
The right side is the fan holding chamber 18, and the left side is the switching lever chamber 1.
It has become 9.

Each of the partition walls 13, 15, 16 is divided into upper partition walls 13a, 15a, 16a and lower partition walls 13b, 15b, 16b,
Upper case 11 or lower case 12 respectively
It is integrated into the . And the above partition wall 1
3 is cut out to form a communication port 20, and the rotating brush chamber 14 and the fan chamber 17 communicate with each other. 22 are formed respectively, of which the bearing hole 21 on the fan holding chamber 18 side is the bearing hole 22 on the switching lever chamber 19 side.
It is formed with a larger diameter, and both bearing holes 2
1 and 22 are also divided into upper and lower partition walls 1
It is formed to extend between 5a and 15b and between 16a and 16b, respectively. In addition, the above upper case 1
1 and the lower case 12, the fan chamber 17
The portion forming the suction port body 1 is formed in a substantially arc shape, and a notch 23 is formed in the center of the rear wall of the suction port body 1 on the rear side facing the fan chamber 17. In addition, a suction port 24 is formed on the lower surface of the suction port main body 1, which is the lower side of the rotating brush chamber 14, and the front side of the upper case 11, which is the upper side of the rotating brush chamber 14, is cut out. An opening 25 that opens the upper front surface is formed on the upper surface of the suction port body 1, and a lid 26 that can be opened and closed is attached to this opening 25.

By cutting out the front side of the upper case 11 to form the opening 25, the left and right opening edges 27, 28 and the partition wall 13 are integrated with the upper case 11, and the rear opening edge Part 29
is left behind. Furthermore, the opening edge 28 on the right side
An engagement hole 30 is bored in the opening edge 27 on the left side, and a locking knob 32 having an engagement hole 31 on the opening 25 side is slidably provided. Further, a holding rib 33 for holding the rear edge of the lid 26 is provided protruding along the rear opening edge 29. Further, a holding wall 34 that holds the front edge of the lid body 26 is erected on the front edge of the lower case 12 . Furthermore, a substantially rectangular frame-shaped bumper 35 is sandwiched between the upper case 11 and the lower case 12, and is formed of an elastic material such as rubber on the outer periphery of the suction port body 1, and has a portion corresponding to the notch 23 cut out. installed. The lid body 26 has engaging protrusions 36 at both ends that are removably engaged in an engaging hole 30 of the opening edge 28 on the right side and an engaging hole 31 of the locking knob 32 on the opening edge 27 on the left side. It also has a fitting rib 37 on the rear edge that fits into the rib 33 of the rear opening edge 29 of the upper case 11 .

Further, the bumper 35 includes a bumper body 41 that is wrapped around the outer periphery of the suction port body 1, and a holding portion 42 that protrudes from the inner surface of the bumper body 41 and is held between the upper case 11 and the lower case 12. This holding part 42 further hangs downward to form a fitting groove 43 between it and the bumper main body 41, and the outer peripheral edge of the lower case 12 is fitted into this fitting groove 43. It's getting old. In the partition walls 15 and 16 which are divided into upper and lower parts, between the upper and lower partition walls 15a and 15b,
A seal portion 44 integrally formed with the bumper 35 is sandwiched between a and 16b using an elastic body such as rubber. These seal portions 44 are connected to the notch opening 23.
A linear portion 45 that protrudes forward from both ends of the bumper 35 located nearby and has a substantially doglegged cross section along the dividing line of each partition wall 15, 16, and each It has a semicircular arc portion 46 along the inner periphery of the bearing holes 21, 22 formed in the lower partition walls 15b, 16b of the partition walls 15, 16.

The rotary tube 2 is provided with a semi-cylindrical portion 52 at one end of the tube body 51 and perpendicular to the tube body 51,
A connecting pipe 53 is provided at the other end of the tube body 51 so as to be rotatable in the circumferential direction of the tube body 51, and a support shaft serving as a rotation fulcrum of the rotary tube 2 is provided on both sides of the semi-cylindrical portion 52. 54 and 55 protrude from each other, and each support shaft 54 and 55 is rotatably inserted into the bearing holes 21 and 22 formed in the partition walls 15 and 16 of the upper case 11 and the lower case 12, respectively, to form a semi-cylindrical cylinder. The section 52 is held vertically movably within the fan chamber 17, and connects the pipe body 51 and the connecting pipe 53.
protrudes from the notch 23 to the outside of the suction port main body 1. The semi-cylindrical portion 52 has a substantially rectangular opening 56 when viewed from the front.
The rotary tube 2 and the fan chamber 17 are in communication with each other via the rotary tube 2 and the fan chamber 17. Further, among the above-mentioned support shafts 54 and 55, a bearing hole 2 formed in the partition wall 15 on the side of the fan holding chamber 18
The support shaft 54 inserted into the first support shaft 54 has a larger diameter than the other support shaft 55, and is formed in a cylindrical shape, and has a notch inside thereof and on the opening 56 side of the semi-cylindrical portion 52.

The rotating brush 3 is formed by planting brush bristles 62 in a spiral around a rotating shaft 61, and a gear 63 is attached to one end of the rotating shaft 61. The rotary brush 3 is mounted in the rotary brush chamber 14 by having both ends of a rotary shaft 61 rotatably supported on both sides within the rotary brush chamber 14.
Built inside.

The fan 4 has a plurality of wings 72 radially provided around a cylindrical portion 71 that is inclined in one direction, and both sides of the wings 72 are covered with circular flanges 73. It is arranged so as to be surrounded by the cylindrical portion 52. Further, a shaft 74 is inserted into the cylindrical portion 71, and the shaft 74 passes through the support shaft 54 and is rotatably held in the fan holding chamber 18, so that the fan 4 can freely rotate. It is becoming.
A gear 75 is attached to the tip of the shaft 74, and an endless drive belt 76 is wound around the gear 75 of the shaft 74 and the gear 63 of the rotating shaft 61 to control the rotation of the fan 4. axis 61
The rotating brush 3 is configured to rotate.

Further, along the partition wall 13, the communication port 2
A sliding plate 81 is slidably provided for adjusting the opening area of 0, and this sliding plate 81 is connected to and interlocks with a switching lever 82 that is slidably provided in the switching lever chamber 19. I'm starting to do that. The fan 4 reduces the opening area of the communication port 20 by the sliding plate 81, and rotates when the suction air passing through the fan chamber 17 becomes strong, driving the rotary brush 3 to rotate. It's getting old.

Then, to assemble this suction port body, various parts such as the rotary tube 2, rotary brush 3, fan 4, etc. are assembled at predetermined positions in the lower case 12, and the upper case 12 is assembled.
1 and fix it to the lower case 12 with a plurality of screws 83. At this time, the bumper 35 is held between the upper case 11 and the lower case 12, and the seal portion 44 integrated with the bumper 35 is also held between the upper and lower partition walls 15a, 15b, 16a, and 16b, respectively. When installing the seal part 44, since the seal part 44 is integrated with the bumper 35, the bumper 35 is attached to the lower case 1.
2, it is mounted at a predetermined position, that is, on the lower partition walls 15b, 16b.

Then, the suction port body assembled in this manner is connected to a vacuum cleaner (not shown) via an extension tube or a hose, the power is turned on, and the vacuum cleaner is slid over the surface to be cleaned. Then, the suction air flows into the suction port 24 along with dirt, etc.
The rotating brush chamber 1 inside the suction port main body 1
4. It passes through the communication port 20, the fan chamber 17, and the rotary tube 2, and is sucked into the vacuum cleaner via the extension tube and hose. At this time, if the switching lever 82 is used to slide the sliding plate 81 to reduce the opening area of the communication port 20, the suction air entering the fan chamber 17 from the communication port 20 becomes faster, causing the fan 4 to rotate. The rotational force is transmitted to the rotating shaft 61 of the rotating brush 3 via the shaft 74, gear 75, drive belt 76, and gear 63, and the rotating brush 3 rotates to scrape off dirt and the like on the surface to be cleaned.

A partition wall 15 forming a fan chamber 17,
In 16, the upper and lower partition walls 15 are divided.
A, 15b, 16a, and 16b are sandwiched between the seal portion 44 and the gap between the divided portions is sealed, so that the airtightness of the fan chamber 17 is increased, and leakage air does not enter into the fan chamber 17, and the intake air is The rotation of the fan 4 and the rotation of the rotating brush 3 are not slowed down due to weakening of the suction force, and dirt and the like can be effectively sucked.

Further, since the seal portion 44 is formed integrally with the bumper 35, the number of parts does not increase and the cost can be reduced.Moreover, there is no risk of losing only the seal portion 44, and assembly can be performed integrally. In addition, since it is integrated with the bumper 35, there is no need to temporarily fasten it with other fasteners during assembly, and the assembly is easy.Since it is held by the bumper 35 even after assembly, the upper and lower partitions can be separated. wall 1
There is little risk of it coming off between 5a, 15b, 16a, and 16b. Along with this, the upper and lower partition walls 15
A, 15b, 16a, and 16b are sandwiched between the seal portions 44 that protrude from both ends of the bumper 35 located near the notch 23, so that the bumper body 41 can be reliably rolled up from this portion. Prevented. Furthermore, since the seal portion 44 has both the functions of maintaining airtightness and preventing curling, the structure is efficient.

[Effect of idea]

According to the present invention, since the seal part formed integrally with the bumper is sandwiched between the upper and lower partition walls forming the fan chamber, the airtightness of the fan chamber is improved, and the suction force of the suction air is not reduced and the dust is removed. etc., thereby preventing the rotation of the fan in the fan chamber and the rotating brush rotationally driven by the fan from decreasing. In addition, since the seal part held between the upper and lower partition walls protrudes from both ends of the bumper located near the notch where there is no bumper, it is possible to prevent the bumper from rolling up from this part. .

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the suction port body of the present invention, Fig. 2 is a perspective view of the bumper, Fig. 3 is a perspective view of the lower case, and Fig. 4 is a perspective view of the bottom side of the upper case. It is. 1... Suction port body, 2... Rotating pipe, 3... Rotating brush, 4... Fan, 11... Upper case, 1
2... Lower case, 13, 13a, 13b, 1
5, 15a, 15b, 16, 16a, 16b...
Partition wall, 14... Rotating brush chamber, 17... Fan chamber, 23... Notch, 24... Suction port, 35...
Bumper, 44...Seal part.

Claims (1)

[Scope of Claim for Utility Model Registration] A rotary brush is built into a suction port body formed into a housing by an upper case and a lower case, by means of upper and lower partition walls provided in the upper case and lower case, respectively. A rotating brush chamber and a fan chamber that communicates with the rotating brush chamber and includes a built-in fan for rotationally driving the rotating brush are formed, and a suction port is formed on the lower surface of the lower case that is the lower side of the rotating brush chamber. A notch is formed on the rear side of the suction port body facing the fan chamber, and a rotary tube is attached to the rear side of the suction port body through the notch so as to be movable up and down, and is attached to the outer periphery of the suction port body. A bumper formed in a substantially frame shape with a portion corresponding to the notch opening cut out and sandwiched between the upper case and the lower case is attached, and a seal portion is sandwiched between the upper and lower partition walls forming the fan chamber. A suction port body for a vacuum cleaner, characterized in that it is formed integrally with the bumper and protrudes forward from both ends of the bumper located near the notch opening.