TW202216033A - Vacuum nozzle apparatus - Google Patents

Abstract

A suction nozzle device is provided with: a nozzle body having a suction port provided in the longitudinal center of a rotary cleaning body housing chamber; and a rotary cleaning body having a plurality of brush parts provided from one end side to the other end side of a shaft part, the other end side of the brush part being arranged so as to be backward with respect to the rotation direction relative to the one end side of the brush part, and the axial direction of the rotation axis of the shaft part being parallel to the longitudinal direction of the rotary cleaning body storage chamber. In the suction nozzle device, a plurality of first ribs and a plurality of second ribs which are in contact with the front end of the brush part are respectively arranged on two sides of a suction port of a rotary cleaning body storage chamber, and the rear sides, compared with the front sides, of the plurality of ribs are more inclined towards the center of the rotary cleaning body storage chamber, and the inclination angle of the first ribs is smaller than that of the second ribs. Therefore, the dust scraped from the cleaned surface by using the rotary cleaning body is effectively conveyed to the suction port.

Description

suction nozzle device

The present invention relates to an invention of a suction nozzle device used in an electric vacuum cleaner.

Conventionally, as such a suction nozzle device, there has been known a device including a nozzle body (corresponding to the nozzle body of the invention of the present application), and a rotary cleaning body provided in the nozzle body, the suction nozzle body having The suction port is provided with inclined ribs in contact with the bristle member (corresponding to the brush part of the present invention) of the rotary cleaning body in the suction nozzle body (for example, refer to Patent Document 1). With such a configuration, the brush member of the rotary cleaning body can be brought into contact with the rib, thereby removing the dust adhering to the brush member from the brush member and guiding it toward the suction port side. In addition, although the directions of the rib inclination are opposite on the right side and the left side of the suction port, the absolute value of the inclination angle is the same on the right side and the left side of the suction port. prior art literature Patent Literature

Patent Document 1: Japanese Patent No. 4801516

The problem to be solved by the invention

However, in such a suction nozzle device, generally, the brush portion of the rotary cleaning body is twisted and provided so that the other end side of the shaft portion lags behind in the rotational direction than the one end side of the shaft portion. That is, the crossing angle of the brush part and the rib differs between one end side and the other end side with the suction port interposed therebetween. Therefore, there is a problem that there is a difference in the ability to attract dust between one end side and the other end side with the suction port interposed therebetween.

An object of the present invention is to solve the above problems, and to provide a suction nozzle device that can efficiently send dust scraped from a surface to be cleaned using a rotary cleaning body to a suction port. means of solving problems

The suction nozzle device according to claim 1 of the present invention includes a nozzle body and a rotary cleaning body, the nozzle body has a rotary cleaning body housing chamber and a suction port, the rotary cleaning body housing chamber has a longitudinal direction, and the suction port is provided in the rotary cleaning body. In the center portion of the cleaning body storage chamber in the longitudinal direction, the rotating cleaning body has a shaft portion, and a plurality of brush portions provided from one end side of the shaft portion to the other end side, and these brush portions are arranged so as to be: compared with the aforementioned One end side and the other end side of the shaft portion are backward with respect to the rotation direction, and the shaft direction of the shaft portion is parallel to the longitudinal direction of the rotary cleaning body storage chamber, in the suction nozzle device: Ribs contacting the brushes are respectively provided on both sides of the rotary cleaning body housing chamber sandwiching the suction port, and these ribs are inclined so that the rear side in the rotation direction of the rotary cleaning body is different from the front side in the rotation direction of the rotary cleaning body. The angle of the first rib provided on the one end side of the suction port with respect to the rotation axis is more toward the center of the rotary cleaning body storage chamber than the angle of the second rib provided on the other end side of the suction port with respect to the rotation axis. angle is smaller.

In addition, the suction nozzle device according to claim 2 of the present invention is the device according to claim 1, wherein the intersecting angle between the first rib and the brush portion is equal to the intersecting angle between the second rib and the brush portion.

Further, the suction nozzle device according to claim 3 of the present invention is the device in claim 1, wherein the number of the second ribs is greater than the number of the first ribs. Invention effect

The suction nozzle device according to claim 1 of the present invention can be configured as described above, so that the removal by the rib comes from the one end side and the other end side of the rotary cleaning body sandwiching the suction port. The difference in the ability of the brush portion to remove dust is reduced, and dust is removed from one end side of the brush portion in the same manner as the other end side, so that dust can be favorably attracted and removed from the surface to be cleaned.

Furthermore, by setting the intersection angle of the first rib and the brush portion to be equal to the intersection angle of the second rib and the brush portion, one end side of the rotary cleaning body sandwiching the suction port can be connected to the other side. On one end side, the rib has the same ability to remove dust from the brush part, and the one end side of the brush part removes dust in the same way as the other end side, so the dust can be favorably absorbed from the surface to be cleaned.

In addition, by setting the number of the second ribs to be larger than the number of the first ribs, the difference in the range formed by the ribs for removing the dust from the brush portion can be reduced, so that the dust can be removed from the brush. Since the entire part is removed, the dust can be favorably attracted and removed from the surface to be cleaned.

Form for carrying out the invention

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8 . In addition, the front and back in this embodiment are prescribed|regulated based on FIG. 1 and FIG. 2. FIG. That is, let the lower side in FIG. 1 be the front, and let the upper side be the back. In addition, let the upper side in FIG. 2 be front, and let the lower side be back. In addition, let the right side of FIGS. 1 and 2 be right, and let the left side be left. 1 is a suction nozzle device of the present invention. The suction nozzle device 1 can be attached to and detached directly or indirectly from a vacuum cleaner body (not shown). Furthermore, the aforementioned suction nozzle device 1 may be provided integrally with the cleaner body.

The aforementioned suction nozzle device 1 includes a nozzle body 2 , a rotary cleaning body 3 , a joint portion 4 , and a connecting cylinder portion 5 . In the nozzle body 2, the left-right direction is the long-side direction, and the front-rear direction is the short-side direction. In addition, on the lower front side of the nozzle body 2, a suction opening 21 formed long in the left-right direction is provided. Moreover, in the center of the rear part of the said nozzle main body 2, the notch part 22 which opens the back and the upper direction is formed. In addition, the aforementioned joint portion 4 is attached to the cutout portion 22 so as to be swingable. Moreover, the protrusion part 23 which protrudes rearward is formed in the periphery of the said notch part 22. As shown in FIG. In addition, ball casters 24 are provided on the left and right sides of the aforementioned notch portion 22 in the protruding portion 23 so as to be exposed downward, respectively. The ball casters 24 are in contact with the surface to be cleaned, that is, the ground or the like. In addition, in order to move the said ball caster 24 smoothly, the bearing structure which is not shown in figure is provided inside. Further, behind the aforementioned suction opening 21, a brush 25 formed long in the left-right direction is provided.

The aforementioned joint portion 4 has an undulating portion 41 and a rotating portion 42 . The undulating portion 41 includes a swinging cylindrical portion 43 , a connecting pipe 44 and a connecting portion 45 . On the other hand, the aforementioned rotating portion 42 has a connecting portion 46 and the aforementioned connecting cylindrical portion 5 . The connecting cylinder portion 5 is detachably connected to the vacuum cleaner body (not shown). The said rocking|fluctuation cylinder part 43 is rockably supported by the said notch part 22 so that the rotation axis may become a left-right direction. In addition, a communication port 47 that communicates with the suction port 29 is formed in the swing cylindrical portion 43 . Moreover, the said connection pipe 44 is extended in the direction which cross|intersects the rotation axis of the said rocking cylinder part 43, and is integrally formed with the said rocking cylinder part 43. As shown in FIG. In addition, the connecting portion 46 of the rotating portion 42 is rotatably connected to the connecting portion 45 . Furthermore, as shown in FIG. 5 , the connecting portion 46 of the rotating portion 42 is located in front of the connecting portion 45 of the undulating portion 41 when the joint portion 4 is in an upright state. In this way, since the connecting portion 46 of the rotating portion 42 is located in front of the connecting portion 45 of the undulating portion 41 , the connecting cylindrical portion 5 and the vacuum cleaner body connected to the connecting cylindrical portion 5 can be connected around the connecting portion 5 . The direction of the nozzle body 2 is changed by twisting the central axis of the cylindrical portion 5 . In addition, when the joint portion 4 is in an upright state, the connecting portion 46 of the rotating portion 42 is located almost in the center in the front-rear direction of the nozzle body 2 .

In the front part of the nozzle body 2, a rotary cleaning body storage chamber 26 opened downward is formed, and the open part of the rotary cleaning body storage chamber 26 is the suction opening 21. This rotary cleaning body storage chamber 26 has a longitudinal direction in the left-right direction. In addition, a through hole (not shown) is provided at one end side of the rotary cleaning body housing chamber 26 , that is, the right end portion, and a drive connection portion 27 is provided in the through hole. In addition, this drive connection part 27 is rotated by the drive source which is not shown in figure. On the other hand, the bearing support part 28 is provided in the other end side of the said rotary cleaning body housing chamber 26, ie, the left end part. Moreover, the suction port 29 is provided in the rear part of the longitudinal direction center part of the said rotary cleaning body storage chamber 26. As shown in FIG. The suction port 29 is located behind the rotating cleaning body 3 , and communicates with the cavity 48 in the undulating portion 41 through the communication port 47 . In addition, the cavity 48 communicates with the cavity 49 in the aforementioned rotating portion 42 . In addition, the cavity 49 in the rotating portion 42 communicates with the suction path of the vacuum cleaner body because the connecting cylinder portion 5 is connected to the vacuum cleaner body. In this way, inside the suction nozzle device 1 , a suction path 6 can be formed from the suction opening 21 through the suction opening 29 , the communication port 47 , the cavities 48 , 49 to the discharge port 51 of the connecting cylindrical portion 5 .

The aforementioned rotary cleaning body 3 has a shaft portion 31 . The shaft portion 31 has four mounting grooves 32 from one end to the other end. In addition, these mounting grooves 32 are formed at equal intervals in the circumferential direction of the aforementioned shaft portion 31 . Each of the mounting grooves 32 is twisted in the circumferential direction and spirally formed so that the left side, which is one end of the shaft portion 31 , is backward with respect to the rotational direction R of the rotary cleaning body 3 . In addition, the rotation direction R is counterclockwise in FIG. 5 (counterclockwise direction). In the present embodiment, each of the mounting grooves 32 is formed by twisting π/2 in the circumferential direction from one end to the other end of the shaft portion 31 . Furthermore, the twist angle of each of the mounting grooves 32 is fixed from one end to the other end of the shaft portion 31 . Moreover, the brush part 33 is attached to each said attachment groove|channel 32, respectively. That is, four brush parts 33 are provided at equal intervals in the circumferential direction of the shaft part 31 in such a manner that one end of the shaft part 31 is the right side, and the other end is the left side relative to the rotary cleaning body 3 The direction of rotation R is backward. Furthermore, an imaginary cylindrical surface C is defined with the rotation axis X of the shaft portion 31 as the center and the distance from the rotation axis X to the front end of each of the brush portions 33 as the radius. The angle of the brush portion 33 with respect to the rotation axis X is θ ₁ . And, this angle θ ₁ is fixed. In addition, a driven connection portion 34 is provided on the right side, which is one end side of the shaft portion 31 , corresponding to the drive connection portion 27 . This driven connection portion 34 forms a coupling structure with the aforementioned drive connection portion 27 . On the other hand, on the left side, which is the other end side of the shaft portion 31 , a bearing portion 35 is provided corresponding to the bearing support portion 28 . That is, in a state in which the rotary cleaning body 3 is installed in the rotary cleaning body housing chamber 26, the driving force from a driving source (not shown) is transmitted to the driven connection part 34 through the driving connection part 27, Thereby, the said rotary cleaning body 3 is rotated in the said rotary cleaning body housing chamber 26. The aforementioned driving source is a motor, and the switch 36 can be supplied with electric power and rotated by contacting the surface to be cleaned. In addition, although the drive source is an electric motor in this embodiment, it may be a turbine (turbine) that rotates by sucking an air flow. Moreover, the brush part 33 protrudes slightly downward rather than the ball caster 24 . That is, in a state where the suction nozzle device 1 has been placed on the surface to be cleaned, the brush portion 33 is brought into contact with the surface to be cleaned.

A first rib group 72 and a second rib group 73 are provided on the rear upper wall 71 of the rotary cleaning body housing chamber 26 . The first rib group 72 is located on one end side (ie, the right side) with respect to the suction port 29 . On the other hand, the second rib group 73 is located on the other end side (ie, the left side) with respect to the suction port 29 . That is, the first rib group 72 and the second rib group 73 are provided on both sides of the rotary cleaning body storage chamber 26 so as to sandwich the suction port 29 . Moreover, the said 1st rib group 72 and the 2nd rib group 73 are spaced apart from the distance about the width|variety of the said suction port 29, and are provided. Moreover, the said 1st rib group 72 and the said 2nd rib group 73 are respectively provided in the back of the rotation direction R of the said rotary cleaning body 3 with respect to the said suction port 29 (that is, above and the front of the said suction port 29). In addition, the height of the plurality of first ribs 74 constituting the first rib group 72 is such that when the rotary cleaning body 3 is attached to the rotary cleaning body housing chamber 26, the front end portion of the brush portion 33 is in contact with each other. degree of height. Similarly, the height of the plurality of second ribs 75 constituting the second rib group 73 is such that when the rotary cleaning body 3 is attached to the rotary cleaning body housing chamber 26 , the front end portion of the brush portion 33 is in contact with each other. degree of height. In addition, the height of the first rib 74 and the height of the second rib 75 are equal to each other.

Furthermore, the plurality of first ribs 74 constituting the first rib group 72 are formed from the front side toward the rear side in the rotational direction R of the rotary cleaning body 3 (that is, the plurality of first ribs 74 are moved from the rear side of the rotary cleaning body housing chamber 26 to the rear). toward the front) and inclined toward the center of the aforementioned rotary cleaning body storage chamber 26 . Similarly, the plurality of second ribs 75 constituting the second rib group 73 also go from the front side to the rear side in the rotational direction R of the rotary cleaning body 3 (that is, as the rotary cleaning body accommodating chamber 26 moves from the front side to the rear side). The rear is toward the front) and is inclined toward the center of the aforementioned rotary cleaning body storage chamber 26 . In addition, the angle θ _{2 of the first rib 74 with respect to the rotation axis X is smaller than the angle θ 3 of} the second rib 75 with respect to the rotation axis X. In this way, the angle θ ₂ formed by the first rib 74 and the rotation axis X is smaller than the angle θ ₃ formed by the second rib 75 and the rotation axis X, and the angle θ 2 formed with respect to the rotation axis X can be inclined and installed The intersection angle θ ₄ (=θ ₂ +θ ₁ ) between the brush portion 33 and the first rib 74 and the intersection angle θ ₅ (=θ ₃ −θ ₁ ) between the brush portion 33 and the second rib 75 (=θ 3 −θ 1 ). difference becomes smaller. In addition, in the case of this embodiment, θ ₄ =θ ₅ . In addition, in the case of the present embodiment, the number of the first ribs 74 constituting the first rib group 72 is five (four long and one short), and the number of the second ribs 75 constituting the second rib group 73 is six. (6 long). As a result, the range of the rotation axis X direction of the first rib group 72 is equal to the rotation axis X direction range of the second rib group 73 .

Next, the operation of this embodiment will be described. First, the user connects the connecting cylinder portion 5 of the suction nozzle device 1 of the present embodiment to a vacuum cleaner body (not shown). In addition, the suction nozzle device 1 may be directly connected to the vacuum cleaner body, or may be connected with an extension tube or the like sandwiched therebetween. Then, by actuating the electric blower built in the vacuum cleaner body, a suction airflow flowing from the suction opening 21 of the suction nozzle device 1 to the vacuum cleaner body through the suction path 6 can be formed. In addition, when the suction nozzle device 1 is placed on the surface to be cleaned, such as the ground, the switch 36 is pushed up, and the drive source built in the nozzle body 2, that is, a motor (not shown in the figure) is actuated, and the rotary cleaning is performed. The body 3 rotates in the rotational direction R. Furthermore, as described above, the rotation direction R is counterclockwise (counterclockwise) in FIG. 5 . That is, above the rotation axis X, the brush portion 33 moves from the rear in the rotary cleaning body storage chamber 26 to the front. Conversely, below the rotation axis X, the brush portion 33 moves from the front to the rear in the rotary cleaning body storage chamber 26 . By rotating the rotary cleaning body 3 in this manner, the dust D on the surface to be cleaned is sent to the rear by the brush portion 33 . Furthermore, since the brush part 33 is twisted and provided so that the angle of the brush part 33 with respect to the rotation axis X when the virtual cylindrical surface C is unfolded becomes θ ₁ , it is difficult to rotate the rotary cleaning body 3 . Nonuniformity occurs in the contact resistance between the surface to be cleaned and the brush portion 33 . And the dust D sent to the back by the said brush part 33 like this will accumulate|store in the dust collecting part in the said vacuum cleaner main body from the said suction port 29 through the suction path 6.

Furthermore, there is a possibility that the dust D may adhere to the brush portion 33 . However, as described above, the front end of the brush portion 33 is in contact with the first rib group 72 or the second rib group 73 formed on the rear upper wall 71 of the rotary cleaning body housing chamber 26, as shown in FIGS. 7 and 8 . As shown, the dust D adhering to the brush part 33 moves toward the center of the rotary cleaning body 3 along the first rib 74 or the second rib 75 . In addition, the dust D that has moved toward the center side along the first rib 74 or the second rib 75 is respectively rotated along the first rib 74 adjacent to the center side by the rotation cleaning body 3 once. Or the second rib 75 is further moved toward the center side.

For example, in the case of the first rib group 72, when the rotary cleaning body 3 makes one rotation, the first rib 74a located on the outermost side (right side in FIG. 7 ) goes to the center (the suction port 29 side) along the first rib 74a. , the left side in FIG. 7 ) the moving dust D will move further toward the center side along the first rib 74b which is adjacent to the center side than the aforementioned first rib 74a. After that, the dust D moves further toward the center side along the first ribs 74c, 74d, and 74e. Then, the dust D moving toward the center side along the first rib 74e located on the most center side is sucked by the aforementioned suction port 29 .

Similarly, in the case of the second rib group 73, when the rotary cleaning body 3 makes one rotation, the second rib 75a located on the outermost side (left side in FIG. 8 ) goes toward the center side (the suction port 29) The moving dust D moves further toward the center side along the second rib 75b which is more adjacent to the center side than the aforementioned second rib 75a. After that, the dust D moves further toward the center side along the second ribs 75c, 75d, 75e, and 75f. Then, the dust D moving toward the center side along the second rib 75f located on the most center side is sucked by the aforementioned suction port 29 .

In this way, the dust D adhered to the brush part 33 can be prevented from being in a state in which the dust D still adheres to the brush part 33 by transferring and sucking the dust D adhering to the brush part 33 toward the suction port 29 side. Since the surface to be cleaned is cleaned by the brush portion 33 from which the dust D has been removed, the ability to remove the dust D from the surface to be cleaned is improved.

Furthermore, as described above, when the virtual cylindrical surface C is unfolded, the brush portion 33 is inclined by θ ₁ with respect to the rotation axis X. As shown in FIG. Therefore, if the inclination angle θ2 _of the first rib 74 with respect to the rotation axis X is the same as the inclination angle θ3 of the _second rib 75 with respect to the rotation axis X, the following situation occurs: the brush portion 33 and the The intersection angle θ ₄ (=θ ₂ +θ ₁ ) of the first rib 74 is different from the intersection angle θ ₅ (=θ ₃ −θ ₁ ) between the brush portion 33 and the second rib 75, and there is a difference between the first rib 74 and the first rib 75. The rib group 72 and the second rib group 73 have a doubt that the ability to remove the dust D is different. However, in the present embodiment, since the angle θ2 is set smaller than the angle θ3 in order to make the intersection angle _θ4 and the intersection angle _θ5 equal (or to make the difference between them smaller), the angle θ2 can be made smaller _than the angle _θ3 . The ability of the first rib group 72 to remove the dust D from the brush portion 33 is equivalent to the ability of the second rib group 73 to remove the dust D from the brush portion 33, but in The dust D is removed from one end side of the brush portion 33 in the same manner as the other end side. As a result, the dust D can be favorably sucked and removed from the surface to be cleaned.

In addition, the rotation of the first rib group 72 can be adjusted by setting the number of the second ribs 75 constituting the second rib group 73 to be larger than the number of the first ribs 74 constituting the first rib group 72 The range in the axis X direction is equal to the range in the rotation axis X direction of the second rib group 73 described above. Thereby, the difference between the range formed by the first rib group 72 to remove the dust D from the brush portion 33 and the range formed by the second rib group 73 to remove the dust D from the brush portion 33 is made It becomes small, and the dust D can be removed from the brush part 33 mentioned above as a whole. As a result, the dust D can be favorably sucked and removed from the surface to be cleaned.

As described above, in the present invention, the suction nozzle device 1 includes the nozzle body 2 and the rotary cleaning body 3, the nozzle body 2 has the rotary cleaning body housing chamber 26 and the suction port 29, the rotary cleaning body housing chamber 26 has a longitudinal direction, and the suction The port 29 is provided in the center portion in the longitudinal direction of the rotary cleaning body housing chamber 26, and the rotary cleaning body 3 has a shaft portion 31 and a plurality of brush portions 33 provided from one end side to the other end side of the shaft portion 31, These brush parts 33 are provided so that the other end side of the shaft part 31 is backward with respect to the rotation direction R than the one end side of the shaft part 31 , and the axial direction of the rotation axis X of the shaft part 31 and the rotation direction of the rotary cleaning body storage chamber 26 are provided. The longitudinal directions are parallel, and in the suction nozzle device 1, the rotary cleaning body housing chamber 26 is provided with a plurality of first and second nozzles for contacting the front end of the brush portion 33 on both sides of the rotary cleaning body storage chamber 26 sandwiching the suction port 29, respectively. The first rib group 72 composed of a rib 74 and the second rib group 73 composed of a plurality of second ribs 75 are inclined so as to be relative to the rotation direction of the rotary cleaning body 3 The front side of R and the rear side of the rotation direction R are more toward the center of the rotary cleaning body housing chamber 26, and the angle θ 2 of the first rib 74 with respect to the rotation axis X is smaller than the angle θ ₂ of the first rib 74 with respect to the rotation axis X than the second rib 75 with respect to the rotation axis X Since the angle θ ₃ is smaller, the difference between the one end side and the other end side of the rotary cleaning body 3 in the ability to remove the dust D from the brush portion 33 by the rib groups 72 and 73 is reduced. On the other hand, since the dust D can be removed on the one end side of the brush portion 33 in the same manner as the other end side, the dust D can be favorably sucked and removed from the surface to be cleaned.

In addition, in the present invention, by making the intersection angle θ ₄ between the first rib 74 and the brush portion 33 equal to the intersection angle θ ₅ between the second rib 75 and the brush portion 33 One end side and the other end side of the rotating cleaning body 3 of the mouth 29 are equal in the ability to remove the dust D from the brush part 33 by the rib groups 72 and 73, and the one end side of the brush part 33 is the same as the other end side. Since the dust D is removed in the same manner on one end side, the dust D can be more favorably attracted and removed from the surface to be cleaned.

In addition, in the present invention, by setting the number of the second ribs 75 constituting the second rib group 73 to be larger than the number of the first ribs 74 constituting the first rib group 72, the rib group 72 The difference between the ranges formed by 73 for removing the dust D from the brush portion 33 is reduced, and the dust D is removed from the brush portion 33 as a whole, so that the dust D can be favorably sucked and removed from the surface to be cleaned.

In addition, this invention is not limited to the invention of the above-mentioned embodiment, Various deformation|transformation can be implemented in the gist of invention. For example, in the above-described embodiment, although θ ₄ =θ ₅ , they may not be exactly equal (θ ₄ ≒ θ ₅ ). Moreover, in the above-mentioned embodiment, although the rib is provided only on the rear upper wall of the rotary cleaning body housing chamber, the rib may be provided in a wider range along the rotation direction R of the rotary cleaning body, and may be further provided. The entire area along the rotation direction R in the rotary cleaning body storage chamber. In this case, depending on the width of the rotation axis X direction of the rotary cleaning body housing chamber or the values of the inclination angles θ ₂ and θ ₃ of the rib, there may be cases where a single rib is sufficient instead of plural.

1: Suction nozzle device 2: Nozzle body 21: Suction opening 22: Notched part 23: Protruding part 24: Ball caster 25: Brush 26: Rotary cleaning body storage chamber 27: Drive connection part 28: Bearing support part 29: Suction port 3 : Rotary cleaning body 31 : Shaft part 32 : Mounting groove 33 : Brush part 34 : Driven connection part 35 : Bearing part 36 : Switch 4 : Joint part 41 : Ramp part 42 : Swivel part 43 : Swing cylinder part 44 : Connection Tubes 45, 46: Connection part 47: Communication port 48, 49: Cavity 5: Connection cylinder part 51: Discharge port 6: Suction path 71: Rear upper wall 72: First rib group 73: Second rib group 74, 74a , 74b, 74c, 74d, 74e: first rib 75, 75a, 75b, 75c, 75d, 75e, 75f: second rib AA, BB: line C: imaginary cylindrical surface D: dust R: rotation direction X: rotation Axis θ ₁ : angle θ _{2 of brush portion 33 with respect to rotational axis X: angle θ 3 formed by first rib 74 and rotational axis X: angle θ 4 formed by} second rib 75 and rotational axis X: brush portion 33 _The intersection angle θ5 with the first rib 74: the intersection angle between the brush portion 33 and the second rib 75

FIG. 1 is a plan view showing a suction nozzle device according to an embodiment of the present invention. Fig. 2 is the same device, and is a bottom view. Fig. 3 is a bottom view of the same apparatus in a state in which the rotary cleaning body has been removed. Fig. 4 is an external view of the same apparatus and a rotating cleaning body, (a) is an external view viewed from the direction perpendicular to the axial direction, and (b) is an A-A enlarged cross-sectional view. Fig. 5 is the same device, and is a B-B cross-sectional view of the suction nozzle device. FIG. 6 is an explanatory diagram showing the relationship between the rib and the brush part, which is the same device. FIG. 7 is an enlarged view of the same device and one end side in FIG. 6 . FIG. 8 is the same device, and is an enlarged view of the other end side in FIG. 6 .

29: Suction port

33: Brush Department

72: First rib group

73: Second rib group

74: First rib

75: Second rib

R: direction of rotation

X: Rotation axis

θ ₁ : the angle of the brush portion 33 with respect to the rotation axis X

Claims (3)

A suction nozzle device has a nozzle body and a rotary cleaning body, the nozzle body has a rotary cleaning body storage chamber and a suction port, the rotary cleaning body storage chamber has a longitudinal direction, and the suction port is provided in the length of the rotary cleaning body storage chamber. In the center portion in the side direction, the rotary cleaning body has a shaft portion, and a plurality of brush portions provided from one end side of the shaft portion to the other end side, and these brush portions are provided so as to be different from one end side of the shaft portion. One end side is backward with respect to the rotation direction, and the axial direction of the shaft portion is parallel to the longitudinal direction of the rotary cleaning body storage chamber, and the suction nozzle device is characterized by: Ribs contacting the brushes are respectively provided on both sides of the rotary cleaning body housing chamber sandwiching the suction port, and these ribs are inclined so that the rear side in the rotation direction of the rotary cleaning body is different from the front side in the rotation direction of the rotary cleaning body. more toward the center of the aforementioned rotary cleaning body storage chamber, In addition, the angle of the first rib provided on one end side of the suction port with respect to the rotation axis is smaller than the angle of the second rib provided on the other end side of the suction port with respect to the rotation axis. The suction nozzle device of claim 1, wherein the intersection angle of the first rib and the brush portion is equal to the intersection angle of the second rib and the brush portion. The suction nozzle device of claim 1, wherein the number of the aforementioned second ribs is greater than that of the aforementioned first ribs.

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