Cleaner head

Abstract

A cleaner head is provided that can be commonly used for a dust body with a straight cross section or an arc-shaped convex cross section relative to a dust surface. A corresponding wall portion (15) facing the dust surface (10) has a central discharge slit (6) and left and right suction slits (7, 7), and the outer extension lines (L7, L7) of the pair of suction slits (7, 7) are arranged in an inclined manner so as to intersect each other as they move away from the corresponding wall portion (15).

Description

Technical Field

[0001] The present invention relates to a cleaner head. Background Art

[0002] The previous cleaner head C0 was used as follows Figure 6 The cross-sectional shape is as shown (see Patent Document 1).

[0003] That is, Figure 6 and Figure 7 As shown in (C), the dust object 51 sent in the direction of arrow K is a flat sheet, a flat plate, etc., and has a central discharge slit 53 and suction slits 54, 54 on the upstream and downstream sides of the feeding direction (arrow K). The spacing size W of the suction slits 54, 54 is 54 It is fully set.

[0004] also, Figure 7 (B) Figure 7 The dust-removable body 51 shown in (C) is a film (sheet) supported by a support roller 55 and fed in the direction of arrow K. In order to keep the spacing between the suction slit 54 and the dust-removable body 51 below a predetermined value, the corresponding surface 56 of the cleaner head C0 is formed into a low trapezoidal, arc-shaped recessed surface.

[0005] As described above, in the conventional remover head C0, it is necessary to prepare a plurality of types of corresponding surfaces 56 that respectively correspond to the shapes of the dust removal surfaces of the respective dust removal bodies 51.

[0006] Therefore, the inventors conceived that Figure 6 The larger spacing dimension W of the conventional scavenger head C0 made of aluminum extruded profile as shown in FIG. 54 shorten it, study it Figure 8 The scavenger head C1 is shown (as a comparative example).

[0007] That is, Figure 8 As shown in the comparative example of FIG. 5 , it is considered that the interval size W between the two suction slits 54 and 54 can be 54 (Compare Figure 6 ) is reduced, and it can also be applied to the dust-removable body 51 such as a sheet supported by the support roller 55.

[0008] Patent Document 1: Japanese Patent Application Publication No. 2011-45867. Summary of the invention

[0009] However, it is known that Figure 8 In the comparative example, since it is made of an aluminum extruded profile, it is impossible to make the aforementioned spacing dimension W 54 Sufficiently small.

[0010] Specifically, in Figure 8In the embodiment, the rectangular surrounding wall 57 and the two bent partition walls 58, 58 inside the rectangular surrounding wall 57 form a central pressure space 59 and left and right vacuum spaces 60, 60, but the spacing dimension Wa of the discharge vicinity 59A of the pressure space 59 close to the discharge slit 53 is difficult to be reduced to Figure 8 The extent shown.

[0011] The reason is that it is difficult to make a part of the core of the extrusion die into a forming Figure 8 The thin wall thickness of the small interval dimension Wa shown. That is, if a part of the core of the extrusion die is formed to have a wall thickness such as the above-mentioned interval dimension Wa, it will be damaged and worn out early during extrusion molding.

[0012] Furthermore, the wall thickness of the extruded partition wall 58 itself is difficult to become too thin, so it is impossible to make Figure 8 The interval dimension Wa is sufficiently small. Summary of the invention

[0014] Therefore, the present invention is a cleaner head, which has a discharge slit opened in an orthogonal direction on the corresponding wall portion facing the dust removal surface, and a pair of suction slits opened near the upstream and downstream of the discharge slit, and is characterized in that the outer extension lines of the pair of suction slits opened in the above-mentioned corresponding wall portion are opened in the above-mentioned corresponding wall portion in an inclined state in a manner that they intersect each other closer as they move away from the above-mentioned corresponding wall portion.

[0015] In addition, an extruded profile (1) is provided, wherein the extruded profile (1) integrally has an outer wall portion and a pair of dividing inner wall portions, wherein the pair of dividing inner wall portions divide the internal space of the outer wall portion into a vacuum space, a pressure space, and a vacuum space, and is made from the extruded profile (1). The outer wall portion has a side arranged opposite to the dust removal surface in a cross-sectional shape, and the pair of dividing inner wall portions approach each other at a predetermined angle of 60° to 100° and are connected to the one side in a confluent manner. At the connected confluent position, a discharge slit for ejecting high-pressure air in the pressure space is provided, and further, a pair of suction slits are formed in parallel with each of the pair of dividing inner wall portions approaching each other at the predetermined angle, and the pair of suction slits suck the dust-removed air into the vacuum space.

[0016] Effects of the Invention

[0017] According to the present invention, the width dimension of the suction area of ​​the two suction slits is reduced, and the dust removal surface can be used in common regardless of whether it is a flat surface or a cylindrical surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a transverse cross-sectional view showing one embodiment of the present invention for explaining a usage state.

[0019] Figure 2 It is a transverse cross-sectional view of the pressing profile showing the state before the discharge slit and the suction slit are processed.

[0020] Figure 3 It is a transverse cross-sectional view with dimensions entered for illustration.

[0021] Figure 4 This is an enlarged cross-sectional view of the main parts in use.

[0022] Figure 5 It is a simplified diagram illustrating one method of using the present invention.

[0023] Figure 6 It is a cross-sectional view showing a conventional example.

[0024] Figure 7 This is a simplified explanatory diagram showing a conventional example.

[0025] Figure 8 It is a cross-sectional explanatory diagram showing a comparative example. DETAILED DESCRIPTION

[0026] Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

[0027] exist Figure 2 In the figure, an extruded profile 1 made of a metal such as aluminum is exemplified. The extruded profile 1 integrally includes a surrounding outer wall portion 11 having a rectangular cross section and a pair of partitioning inner wall portions 12, 12.

[0028] exist Figure 1 and Figure 3 , represents the cleaner head 30 of the present invention, Figure 2 The extruded profile 1 is manufactured by forming the discharge slit 6 and two suction slits 7, 7 by machining or the like. The pair of partitioning inner walls 12, 12 partition the inner space of the rectangular surrounding outer wall 11 into a vacuum space V0, a ​​pressure space P0, and a vacuum space V0.

[0029] In this way, Figure 1~Figure 3 The internal space is divided by inner wall portions 12, 12 into a pressure space P0 in the center on the left and right and vacuum spaces V0, V0 on the left and right.

[0030] The surrounding outer wall portion 11 has a cross-sectional shape of a horizontally long flat rectangular shape, and is composed of one side (first horizontal surface portion) 11A arranged opposite to the dust removal surface 10, another side (second horizontal surface portion) 11B parallel thereto, a left side (vertical left surface portion) 11C, and a right side (vertical right surface portion) 11D.

[0031] Furthermore, the inner wall portions 12, 12 are divided into a vertical portion 12A and an inclined portion 12B, and are bent into a "く"-shaped cross-section. Figure 2 As shown, two vertical portions 12A, 12A are vertically provided at a right angle from the other side (upper side) 11B, and the inclined portions 12B, 12B are bent so as to approach each other from the middle of the upper and lower sides.

[0032] The angle θ formed between the inclined portion 12B and the central vertical line Lc is 30° to 50°, preferably 35° to 45°.

[0033] Furthermore, the pair of left and right partition inner wall portions 12, 12 approach each other at a predetermined angle 2θ of 60° to 100° (preferably 70° to 90°) from the upper and lower sides thereof, and are connected to each other by merging with the one side (first horizontal surface portion) 11A. Reference symbol G indicates the merging position where the inclined portions 12B, 12B of the pair of left and right partition inner wall portions 12, 12 are connected to the one side (first horizontal surface portion) 11A.

[0034] In addition, if Figure 2 As shown, an R-shaped thickened portion 13 is formed at a corner formed by the inclined portion 12B and one side 11A.

[0035] A discharge slit 6 for ejecting high-pressure air in the pressure space P0 is formed at the aforementioned merging position G. That is, the discharge slit 6 having a narrow width dimension is formed along the central vertical line Lc.

[0036] In addition, if Figure 4 and Figure 3 As shown, a pair of suction slits 7, 7 for sucking air (including air after dust removal of dust separated and removed from the dust removal surface 10) into the vacuum space V0 are formed parallel to the inclined portions 12B, 12B of a pair of dividing inner wall portions 12, 12 which are close to each other and have the aforementioned predetermined angle 2θ.

[0037] That is, the pair of suction slits 7, 7 are respectively opened in parallel with the inclined portion 12B. The angle formed by the pair of suction slits 7, 7 is therefore 2θ. The pair of suction slits 7, 7 are arranged line-symmetrically with respect to the central vertical line Lc.

[0038] Here, if the configuration of the present invention is repeatedly described using another expression, the aforementioned one side (first horizontal surface portion) 11A can be referred to as a corresponding wall portion 15 facing the dust-removed surface 10 .

[0039] And, if Figure 4As shown, at a cleaner head 30 in which the corresponding wall portion 15 has a discharge slit 6 opened in an orthogonal direction, and a pair of suction slits 7, 7 opened near the upstream and downstream of the discharge slit 6, the outer extension lines L7, L7 of the pair of suction slits 7, 7 opened in the above-mentioned corresponding wall portion 15 are opened in an inclined state in the above-mentioned corresponding wall portion 15 in a manner that they approach and intersect each other as they move away from the above-mentioned corresponding wall portion 15.

[0040] In addition, if Figure 4 As shown, the outer extension line L7 is a line along the center of the slit width of each of the suction slits 7, 7, which have an angle of 2θ with each other and are close to each other and at ( Figure 4 The stars on the right and left sides of the image intersect at the positions of the stars.

[0041] The present invention Figure 4 As shown, the suction airflow F7 is generated at a position very close to the area where the exhaust airflow F6 collides with the dust-removed surface 10, and this airflow is extremely stable.

[0042] In particular, the suction slits 7, 7 are provided in an inclined manner, and the interval dimension W between the opening ends of the suction slits 7, 7 can be made 54 The exhaust airflow F6 is sufficiently small, so that the exhaust airflow F6 is closer to the area where it collides with the dust removal surface 10. Figure 5 As shown, with respect to the dust-removable object 9 such as a sheet (film), no ( Figure 3 The support roller 14 shown in the figure can be provided with a pair of cleaning heads 30, 30 for dust removal at the midway position of the feed rollers 21 and 22. That is, there is also a method that can be performed without using the support roller 14. Figure 5 The advantages of aerial handling are shown.

[0043] like Figure 1 As shown, when the dust removal body 9 is a sheet (film) fed by a small-diameter support roller 14 in the direction of arrow F9, the gap (gap) between the lower opening of the suction slit 7 and the lower surface of one side 11A of the surrounding outer wall portion 11 is also sufficiently small.

[0044] That is, it can be seen that when comparing the dust-removed surface 10 (II) and the dust-removed surface 10 (III), there is almost no deviation in the position of the lower opening of the suction slit 7 and the gap (gap) between the lower surface of one side 11A of the surrounding outer wall portion 11, and there is no difference in the suction force through the suction slit 7.

[0045] Therefore, no matter the dust removal surface 10 is Figure 1 The cleaner head 30 of the present invention can correspond to (can be shared with) any of (I), (II), and (III). Figure 7The reason why the corresponding surface 56 has to be formed into a low trapezoidal concave shape or an arcuate concave shape is that the suction slits 54, 54 need to be prevented from being greatly separated from the dust object 51.

[0046] In summary, in the cleaner head 30 of the present invention, there is no need to provide the conventional low trapezoidal concave corresponding surface 56 (see Figure 7 (B)), arc concave corresponding surface 56 (refer to Figure 7 (C) ) can be used in the same shape (to fully exert the dust removal effect).

[0047] As described in detail above, the present invention has a discharge slit 6 opened in an orthogonal direction on the corresponding wall portion 15 facing the dust removal surface 10, and a pair of suction slits 7, 7 opened near the upstream and downstream of the discharge slit 6. The outer extension lines L7, L7 of the pair of suction slits 7, 7 opened in the corresponding wall portion 15 are opened in an inclined manner in the corresponding wall portion 15 in a manner that they approach each other as they leave the corresponding wall portion 15, so the spacing dimension W of the opening ends of the suction slits 7, 7 is 54 The dust removal surface 10 of the dust removal body 9 can be flexibly changed from a (flat) plane to a curved surface with various curvature radii. Therefore, it is not necessary to prepare a variety of cleaner heads.

[0048] In addition, the cleaner head of the present invention is made from an extruded profile 1 integrally having a surrounding outer wall portion 11 and a pair of dividing inner wall portions 12, 12, wherein the pair of dividing inner wall portions 12, 12 divides the internal space of the surrounding outer wall portion 11 into a vacuum space V0, a ​​pressure space P0 and a vacuum space V0, and the surrounding outer wall portion 11 has a side 11A arranged opposite to the dust removal surface 10 in a cross-sectional shape, and the pair of dividing inner wall portions 12, 12 approach each other at a predetermined angle 2θ of 60° to 100°, and are connected to the side 11A in a confluent manner, and the pressure space P is opened at the connected confluence position G. The discharge slit 6 for high-pressure air ejection, and further, the pair of suction slits 7, 7 for sucking the dust-removed air into the vacuum space V0 are formed parallel to the pair of partition inner wall portions 12, 12 close to each other at the predetermined angle 2θ, so the cross-sectional shape of the pair of partition inner wall portions 12, 12 is not Figure 8 The narrow spacing Wa of the comparative example shown in the figure can also solve the problem of Figure 8 The problems of damage and early wear of the core of the extrusion die have been described above. However, the spacing dimension W between the opening ends of the pair of suction slits 7, 7 can be reduced to 54 Sufficiently small.

[0049] Thus, the interval size W 54The dust removal surface 10 of the dust removal body 9 is sufficiently small and can be flexibly adapted from a (flat) plane to a curved surface with various curvature radii. Therefore, it is not necessary to prepare a variety of cleaner heads.

[0050] Furthermore, if 2θ<60°, the above-mentioned interval size W cannot be 54 It is difficult to fully remove dust according to the shape of the dust removal surface 10 (refer to Figure 1 and its description).

[0051] If 2θ>100°, the area sucked from the dust removal surface 10 becomes too small, and conversely, sufficient removal (suction) of dust becomes difficult.

[0052] Description of Reference Numerals

[0053] 1Extrusion profile

[0054] 6 discharge slit

[0055] 7 Suction slit

[0056] 10 Dust removal surface

[0057] 11 surrounding outer wall

[0058] 11A side

[0059] 12-division inner wall

[0060] 12B inclined part

[0061] 15 corresponding wall

[0062] G merging position

[0063] L7 external extension cable

[0064] P0 pressure space

[0065] V0 Vacuum Space

[0066] W 54 Interval size

[0067] ε Gap size

[0068] 2θ is a given angle.

Claims

1. A cleaner head, characterized in that: It is made from an extruded profile (1) integrally having a surrounding outer wall portion (11) and a pair of partitioning inner wall portions (12) (12), wherein the pair of partitioning inner wall portions (12) (12) divide the internal space of the surrounding outer wall portion (11) into a vacuum space (V0), a pressure space (P0), and a vacuum space (V0), The surrounding outer wall portion (11) has a side (11A) disposed opposite to the dust removal surface (10) in cross-sectional shape. The pair of partition inner wall portions (12) (12) approach each other at a predetermined angle (2θ) of 60° to 100° and are connected to merge with the one side (11A). An R-shaped thickened portion (13) (13) is formed at each corner formed by the one side (11A) and the pair of inclined portions (12B) (12B) of the partitioning inner wall portion (12) (12) that are close to each other at the predetermined angle (2θ), At the connected confluence position (G), a discharge slit (6) for ejecting the high-pressure air of the pressure space (P0) is opened in a direction perpendicular to the above-mentioned one side (11A), and further, a pair of suction slits (7)(7) for sucking the dust-removed air into the above-mentioned vacuum space (V0) are formed in parallel with each of the above-mentioned inclined portions (12B)(12B), and the above-mentioned suction slit (7) is opened in the above-mentioned R-shaped thickened portion (13)(13).

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