JP6963782B2 - Cleaning head - Google Patents

Description

In the present invention, gas such as air is injected from the gas injection port onto the surface of the object to be cleaned, and outside air is sucked through the gas suction port facing the object to be cleaned to obtain dust from the surface of the object to be cleaned. Regarding the cleaning head that is designed to remove.

Conventionally, for example, the cleaning head described in Patent Document 1 is known. The cleaning head is a long body, a square tubular lower cover, an upper cover that is joined so as to form a space (air pool) extending in the longitudinal direction on the upper portion of the lower cover, and the lower cover. The structure is provided inside and has an internal duct extending over the entire length direction thereof. One structure is formed by the lower cover and the inner duct, and a space as an air injection chamber that is released through a slit-shaped air injection port extending in the longitudinal direction inside the inner duct is also provided with the inner surface of the lower cover. Spaces as an air suction chamber that communicate with the outside through a slit-shaped air suction port extending in parallel with the air injection port are formed between the inner surface and the outer surface of the inner duct. The internal duct is connected to an air source (gas pressurizing mechanism) through an intake duct, and air is injected from the internal duct (air injection chamber) through an air injection port by the pressurized air from the air source. Further, the air suction chamber formed in the lower cover communicates with the space (air pool) inside the upper cover provided on the upper part of the lower cover. The space inside the upper cover is configured as an exhaust path exhausted through the exhaust duct, and the outside air is sucked into the air suction chamber of the lower cover through the air suction port by the exhaust action through the exhaust duct. ..

Such a cleaning head is set so that the air injection port and the air suction port face the surface of the object to be cleaned, and the gap between the cleaning head and the surface of the object to be cleaned is maintained at a predetermined interval. The relative movement between the cleaning head and the object to be cleaned is performed. In the process, the dust on the surface of the object to be cleaned is blown off by the air injected from the air injection port, and the dust is sucked from the air suction port together with the outside air, so that the dust is removed from the surface of the object to be cleaned. ..

Japanese Unexamined Patent Publication No. 2014-30806

By the way, in order to cope with the increase in size of the body to be cleaned, if the length of the cleaning head having the above-mentioned structure in the longitudinal direction is increased (for example, width: about 110 mm, height: about 240 mm, length: 4, 000 mm), the cleaning head may bend due to its own weight with the central portion (center of gravity portion) in the longitudinal direction as the lowest point. In order to prevent such bending of the cleaning head, the cleaning head must be fixed to a strong support frame or the like, the support structure becomes large, and the cost increases.

The present invention has been made in view of such circumstances, and provides a cleaning head that does not easily bend even if the length in the longitudinal direction is increased.

The cleaning head according to the present invention is a long body, and has a head main body having a gas injection chamber that is released to the outside through a gas injection port and a gas suction chamber that communicates with the outside through a gas suction port, and along the head main body. It has an exhaust duct that is coupled to the head body so as to form an exhaust path extending in the longitudinal direction, and the gas injection chamber of the head body is connected to a gas pressurizing mechanism, and by the operation of the gas pressurizing mechanism. Gas is injected from the gas injection chamber through the gas injection port, and the gas suction chamber of the head body communicates with the exhaust path formed by the exhaust duct, and an exhaust action through the exhaust path. The cleaning head is designed to suck outside air into the gas suction chamber through the gas suction port, and the bending rigidity of the exhaust duct in the arrangement direction of the head body and the exhaust duct, which are integrated with each other, is the above-mentioned in the arrangement direction. It has a structure having a pull-up fixing mechanism that is larger than the bending rigidity of the head body , is provided in the exhaust duct, and pulls up and fixes a predetermined portion of the head body in the longitudinal direction toward the exhaust duct side.

According to such a configuration, a predetermined portion of the head body in the longitudinal direction is pulled up to the exhaust duct side where the bending rigidity in the arrangement direction of the head body and the exhaust duct is larger by the pull-up fixing mechanism. Since it is fixed, it is possible to prevent the head body from bending due to its own weight. As a result, the bending of the entire cleaning head in which the head body and the exhaust duct are coupled and integrated can be suppressed.

In the cleaning head according to the present invention, the pull-up fixing mechanism can be configured to pull up and fix the central portion of the head body in the longitudinal direction toward the exhaust duct side.

According to such a configuration, even if the head main body tries to bend so that the central portion in the longitudinal direction thereof is lowered, the bending of the head main body can be suppressed by the pull-up fixing mechanism.

In the cleaning head according to the present invention, in the pull-up fixing mechanism, one end is fixed to the upper part of the head body and a screw portion is formed at least in a certain range of the other end, and the exhaust path of the exhaust duct. a rod member extending across the inner, said rod-like member extending from the head main body penetrates, and a block member provided on the upper inner surface of the exhaust duct, as moving to the head the body side is regulated It is possible to have a configuration having an adjusting nut member screwed into the screw portion of the rod-shaped member penetrating the block body in a state of being in contact with the block body.

With such a configuration, the amount of pulling up a predetermined portion in the longitudinal direction of the head body toward the exhaust duct side can be adjusted by the degree of screwing of the adjusting nut member into the threaded portion.

By constructing the head body and exhaust duct with materials of different properties (for example, Young's modulus), and by configuring the head body and exhaust duct with different physical structures, the flexural rigidity of the exhaust duct can be increased. It can be made larger than the bending rigidity.

In the latter case, in the cleaning head according to the present invention, the area of the cross section orthogonal to the longitudinal direction of the exhaust duct can be larger than the area of the cross section orthogonal to the longitudinal direction of the head body.

The bending rigidity of the exhaust duct may be made larger than the bending rigidity of the head body by making both the material and the shape different.

According to the cleaning head according to the present invention, since the head body and the exhaust duct are coupled to suppress the bending of the entire cleaning head, it is difficult to bend even if the length in the longitudinal direction is increased. A cleaning head can be realized.

FIG. 1 is a front view showing a cleaning head according to an embodiment of the present invention. FIG. 2 is a plan view showing a cleaning head according to an embodiment of the present invention. FIG. 3 is a bottom view partially showing the cleaning head according to the embodiment of the present invention. FIG. 4A is a view of the cleaning head shown in FIG. 1 as viewed from arrow A. FIG. 4B is a cross-sectional view showing a BB cross section of the cleaning head shown in FIG. FIG. 4C is a cross-sectional view showing a CC cross section of the cleaning head shown in FIG. FIG. 5 is a diagram illustrating the action of suppressing bending in the cleaning head.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The cleaning head according to the embodiment of the present invention is configured as shown in FIGS. 1 to 3 and 4A to 4C. Note that FIG. 1 is a front view showing the cleaning head, FIG. 2 is a plan view showing the cleaning head, and FIG. 3 is a bottom view partially showing the cleaning head. 4A is a view taken along the line A of the cleaning head shown in FIG. 1, FIG. 4B is a cross-sectional view showing a BB cross section of the cleaning head shown in FIG. 1, and FIG. 4C is a cross-sectional view showing the cleaning head shown in FIG. It is sectional drawing which shows the CC cross section of.

1 to 3 and FIG 4A~ Figure 4C, the cleaning head 10, the exhaust path with rectangular tube-shaped head body 11 comprising an elongated body, extending in the longitudinal direction D _L along the upper surface of the head main body 11 It has an exhaust duct 13 having a U-shaped cross section connected to the head main body 11 so as to form 130 (see FIGS. 4A to 4C), and a nozzle head 12 fixed to the lower surface of the head main body 11. The two edge portions facing and extending in the longitudinal direction _{D L} of the upper surface of the head main body 11, the grooves 111a, 111b are formed (see FIG. 4A~ Figure 4C). By longitudinal direction D _L two edge portions extending in the U-shaped cross section of the exhaust duct 13 is inserted sliding into two grooves 111a, 111b of the head body 11, the head main body 11 and the exhaust duct 13 Be combined. The plate 14 is fixed to one end of a unit in which the head body 11, the nozzle head 12, and the exhaust duct 13 are integrally formed, and the plate 15 is fixed to the other end of the unit. The plate 15 penetrates through each of the exhaust port 16 and the air supply port 17, and the exhaust path 130 in the exhaust duct 13 communicates with the exhaust port 16, and the air injection chamber 112 (FIGS. 4A to 4A) described later of the head body 11 communicates with the exhaust port 16. (See FIG. 4C) communicates with the air supply port 17. One end of each of the head body 11, the nozzle head 12, and the exhaust duct 13 is closed by the plate 14.

Space within the head body 11, in particular, as shown in FIG 4A~ Figure 4C, each extend in the longitudinal direction _{D L} (direction perpendicular to the surface of the paper in FIG 4A~ Figure 4B), perpendicular to the longitudinal direction _{D L} is divided longitudinal direction _D air injection chamber 112 (gas injection chamber) arranged in _FR and two air suction chamber 113a, the 113b (gas suction chamber). Then, in the head main body 11, the air injection chamber 112 communicating with the air supply port 17 (see FIG. 1) is arranged so as to be sandwiched between the two air suction chambers 113a and 113b as described above.

The nozzle head 12, as shown in FIG 4A~ Figure 4C, are generally formed on the rectangular tube, its inside, and two spaces 122a, divided into 122b structure in the longitudinal direction _{D FR} by a partition wall 121 It has become. Two spaces 122a, 122b is open to the head body 11 side through the open portions 123a, 123b extending in the longitudinal direction _{D L} by a predetermined width. On the other hand, the two spaces 122a and 122b communicate with the outside through slit-shaped (see FIG. 3) air suction ports 125a and 125b (gas suction ports). Further, the partition wall 121, a gap 124 is formed, an air injection port 124a of the slit-shaped (see FIG. 3) of the gap 124 extending in the longitudinal direction D _L by leading to the outside is formed.

Air suction chamber 113a of the head main body 11, 113b of the plurality of through holes 115a that are arranged at intervals in the longitudinal direction _{D L} is the wall portion of the nozzle head 12 side corresponding to the respective, 115b, are formed (FIG. See 4C). The plurality of through holes 115a and 115b face the opening portions 123a and 123b of the nozzle head 12, and the air suction chambers 113a and 113b of the head body 11 have the plurality of through holes 115a and 115b and the opening portions 123a. It communicates with the spaces 122a and 122b in the nozzle head 12 through 123b. As a result, the air suction chambers 113a and 113b of the head body 11 communicate with the outside through the slit-shaped air suction ports 125a and 125b of the nozzle head 12. Further, a plurality of through holes 116a that are arranged at intervals in the longitudinal direction _{D L,} 116 b is formed in the air suction chamber 113a, the wall portion of the exhaust duct 13 side corresponding to the respective 113b of the head main body 11 ( See FIG. 4C). As a result, the air suction chambers 113a and 113b of the head body 11 communicate with the exhaust path 130 of the exhaust duct 13.

Further, the wall portion of the nozzle head 12 side corresponding to the air injection chamber 112 of the head main body 11 a plurality of through holes 114 which are arranged at intervals in the longitudinal direction D _L is formed (see FIG. 4C). The plurality of through holes 114 face the gap 124 formed in the partition wall 121 of the nozzle head 12. As a result, the air injection chamber 112 of the head main body 11 is released to the outside through the slit-shaped air injection port 124 formed by the gap 124 formed in the partition wall 121 reaching the outside.

To suppress the deflection due to its own weight of the head body 11 in the arrangement direction D _V between the head body 11 and the exhaust duct 13 _{(perpendicular} to the longitudinal direction D _L), pulled fixing mechanism 20 is provided in the exhaust duct 13 .. As shown in FIGS. 4A and 4B together with FIG. 1, the pull-up fixing mechanism 20 holds a support block 21, a pull-up bolt 22 (rod-shaped member), a fixing block 24 (block body), and an adjusting nut 26 (adjusting nut member). I have. Support block 21 is fixed to the central portion in the longitudinal direction D _L of the upper surface of the head main body 11. One end of the pull-up bolt 22 is screwed into the central portion of the support block 21, and is further tightened and fixed by two nuts 23a and 23b. On the other hand, a fixing block 24 is fixed to the upper inner surface of the exhaust duct 13 so as to face the support block 21 described above. The fixed block 24 is formed with a hole through which a pull-up bolt 22 extending from the support block 21 so as to cross the exhaust path 130 of the exhaust duct 13, and the hole is further screwed into the other end of the pull-up bolt 22. It is expanded as a storage space 25 for accommodating the adjustment nut 26. The adjusting nut 26 accommodated in the accommodating space 25 formed by expanding the hole through which the pull-up bolt 22 of the fixing block 24 penetrates accommodates the fixing block 24 so that the movement toward the head body 11 side is restricted. It is screwed into the pull-up bolt 22 in a state of being in contact with the bottom surface of the space 25.

An adjustment hole is formed in the upper wall of the exhaust duct 13 corresponding to the accommodation space 25 of the fixed block 24. The adjusting nut 22 can be operated from the outside of the exhaust duct 13 in a state of being accommodated in the accommodating space 25 of the fixed block 24 through the adjusting hole. Normally, the adjusting hole is closed by the lid 18.

While the length of each of the front-rear direction D _FR and longitudinal D _L of the exhaust duct 13 and the head body 11 are the same, the length of the array direction D _V of the exhaust duct 13 and the head body 11, the exhaust duct 13 Is bigger. That is, the area of the cross section perpendicular to the longitudinal direction D _L of the exhaust duct 13 is greater than the area of the cross section perpendicular to the longitudinal direction D _L of the head main body 11. Therefore, flexural rigidity of the exhaust duct 13 in the arrangement direction D _V of the head main body 11 and the exhaust duct 13 is greater than the flexural rigidity of the head main body 11 in the arrangement direction D _V. That is, in the cleaning head 10, the head body 11 is attached to the lower portion of the bending rigidity in the arrangement direction D _V is greater than the exhaust duct 13, the center portion is pulled secured by pulling the fixing mechanism 20 described above.

In the cleaning head 10 having the above-described structure, an air pump (gas pressurizing mechanism) for generating pressurized air is connected to the air supply port 17. By the operation of this air pump, pressurized air is supplied to the air injection chamber 112 of the head body 11 through the air supply port 17. As a result, the pressurized air from the air injection chamber 112 is injected through the air injection port 124a of the nozzle head 12. Further, a mechanism for sucking air, for example, a vacuum pump is connected to the exhaust port 16, and the exhaust path is caused by the exhaust action through the exhaust port 16 and the subsequent exhaust path 130 of the exhaust duct 13 by the operation of the vacuum pump. The air suction chambers 113a and 113b of the head body 11 communicating with the 130 are exhausted. As a result, the outside air is sucked into the air suction chambers 113a and 113b through the air suction ports 125a and 125b.

As shown in FIG. 4A, such a cleaning head 10 is set so that the nozzle head 12 faces the surface of the body G to be cleaned with a predetermined gap. In this state, the cleaning head 10 and the body G to be cleaned are relatively moved, and at that time, outside air is sucked through the air suction ports 125a and 125b while injecting air from the slit-shaped air injection port 124a. In the process, dust on the surface of the body G to be cleaned is blown up by the air jetted from the air injection port 124a, and the blown up dust is sucked from the air suction ports 125a and 125b into the air suction chambers 113a and 113b together with the outside air. NS. As a result, dust is removed from the surface of the body G to be cleaned.

When the cleaning head 10 having the above-described structure is supported by a support frame or the like, for example, as shown by the broken line L shown in FIG. 5, the head main body 11 tends to bend so that the central portion thereof becomes the lowest point. .. In contrast, by screwing the adjusting nut 20 of the pulling fixing mechanism 20 for pulling the bolt 22, the center portion in the longitudinal direction D _L of the head body 10 is fixed in a state of being pulled with the pulling bolt 22. Thus, it is possible to prevent the head body 11 is bent so that the central portion in the longitudinal direction D _L is the lowest point. As a result, it is possible to suppress the bending of the entire cleaning head 10 in which the head body 11 (and the nozzle head 12) and the exhaust duct 13 are coupled and integrated. Thus, it is possible to suppress the deflection of the entire cleaning head 10, it is possible to realize the longitudinal direction D hard cleaning head 10 deflection even by increasing the length of _L, and the support structure of the cleaning head 10 It can be simplified and the cost of the support structure can be prevented from increasing.

By adjusting the screwing amount of the adjusting bolt 26, the amount of pulling up the central portion of the head body 11 can be adjusted.

In the embodiment described above, by pulling the fixing mechanism 20 has been to raise the central portion in the longitudinal direction D _L of the head main body 11 is not limited thereto. Also be raise any portion of the longitudinal direction D _L of the head main body 11 of the elongate body, the effect of suppressing the bending of the head main body 11 is. The expected part becomes the lowest point bends the head main body 11 (e.g., the center of gravity portions of the longitudinal direction D _L) are preferably as raise. It can also be configured to pull the plurality of locations in the longitudinal direction D _L of the head body 1.

In the above-described embodiment, the head body 11 and the nozzle head 12 are separate bodies, but they may be integrally configured as the head body.

The pull-up bolt 22 had a threaded portion formed as a whole, but in the pull-up bolt 22 as a rod-shaped member, at least the adjusting nut 26 is screwed to adjust the pull-up bolt 22 up and down. Should be formed.

In the cleaning head 10 described above, pressurized air is supplied through the air supply port 17, but the supplied gas is not limited to air, and may be another gas such as nitrogen gas, for example. ..

The structure of the cleaning head 10, two air suction ports 125a in the longitudinal direction D _FR across the air injection port 124a, although 125b were der those formed, also the air suction port are intended single good. Further, a plurality of air injection ports can be formed, and three or more air suction ports can be formed.

Although the embodiment of the present invention and the modification of each part have been described above, the embodiment and the modification of each part are presented as an example, and the scope of the invention is not intended to be limited. These novel embodiments described above can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims.

The cleaning head according to the present invention has an effect that it is difficult to bend even if the length in the longitudinal direction is increased, and a gas such as air is injected from the gas injection port onto the surface of the object to be cleaned, and the cleaning head is said to be cleaned. It is useful as a cleaning head that removes dust from the surface of the object to be cleaned by sucking outside air through a gas suction port facing the body.

10 Cleaning head 11 Head body 12 Nozzle head 13 Exhaust duct 14, 15 End cover 16 Exhaust port 17 Air supply port 18 Lid 20 Pull-up fixing mechanism 21 Support block 22 Pull-up bolt 23a, 23b Nut 24 Fixing block 25 Storage space 26 Adjustment Nuts 111a, 111b Groove 112 Air injection chamber 113a, 113b Air suction chamber 114, 115a, 115b, 116a, 116b Through hole 121 Partition wall 122a, 122b Space 123a, 123b Opening part 124 Gap 124a Air injection port 125a, 125b Air suction port

Claims (4)

A head body that is a long body and has a gas injection chamber that is released to the outside through a gas injection port and a gas suction chamber that communicates with the outside through a gas suction port.
It has an exhaust duct that connects to the head body so as to form an exhaust path extending in the longitudinal direction along the head body.
The gas injection chamber of the head body is connected to a gas pressurizing mechanism, and the gas is injected from the gas injection chamber through the gas injection port by the operation of the gas pressurizing mechanism.
The gas suction chamber of the head body has a structure that communicates with the exhaust path formed by the exhaust duct, and the outside air is sucked into the gas suction chamber through the gas suction port by the exhaust action through the exhaust path. It ’s a cleaning head
The bending rigidity of the exhaust duct in the arrangement direction of the head body and the exhaust duct to be integrated is larger than the bending rigidity of the head body in the arrangement direction.
A cleaning head provided in the exhaust duct and having a pull-up fixing mechanism for pulling up and fixing a predetermined portion of the head body in the longitudinal direction toward the exhaust duct side. The cleaning head according to claim 1, wherein the pull-up fixing mechanism pulls up and fixes a central portion of the head body in the longitudinal direction toward the exhaust duct side. The pull-up fixing mechanism
A rod-shaped member whose one end is fixed to the upper part of the head body and a threaded portion is formed at least in a certain range of the other end and extends so as to cross the exhaust path of the exhaust duct.
A block body provided on the upper inner surface of the exhaust duct through which the rod-shaped member extending from the head body side penetrates.
Claim 1 or 2 having an adjusting nut member screwed to the threaded portion of the rod-shaped member that moves to the head the body side through the block body in contact with the said block member as regulated The cleaning head described. The cleaning head according to any one of claims 1 to 3, wherein the area of the cross section orthogonal to the longitudinal direction of the exhaust duct is larger than the area of the cross section orthogonal to the longitudinal direction of the head body.

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