JP2018192391A - Cleaning head - Google Patents

Abstract

To provide a cleaning head which is prevented from being bent even when a length in a longitudinal direction increases.SOLUTION: A cleaning head has a structure in which a gas jetting chamber 112 of a head main body 11 is connected to a gas pressurizing mechanism, gas is jetted from the gas jetting chamber 112 through a gas jetting port 124a by an operation of the gas pressurizing mechanism, and gas suction chambers 113a, 113b of a head main body 11 are communicated with an exhaust passage 130 in an exhaust duct 13. Outside air is sucked in the gas suction chambers 113a, 113b through gas suction ports 125a, 125b by an exhaust action through the exhaust passage 130. Flexural rigidity of the exhaust duct 13 in an arrangement direction of the integrated head main body 11 and exhaust duct 13 is larger than flexural rigidity of the head main body 11 in the arrangement direction. A pull-up and fixing mechanism 20 pulls up and fixes a predetermined part of the head main body 11 in the longitudinal direction to an exhaust duct 13 side.SELECTED DRAWING: Figure 4B

Description

  The present invention ejects a gas such as air from the gas ejection port onto the surface of the object to be cleaned, and also draws dust from the surface of the object to be cleaned by sucking outside air through the gas suction port facing the object to be cleaned. The present invention relates to a cleaning head that removes water.

  Conventionally, for example, a cleaning head described in Patent Document 1 is known. The cleaning head is a long and rectangular tube-shaped lower cover, an upper cover coupled to form a space (air pocket) extending in the longitudinal direction at the upper portion of the lower cover, and the lower cover It has a structure provided with an internal duct that is provided inside and extends over the entire region in the longitudinal direction. One structure is constituted by the lower cover and the internal duct, and a space as an air injection chamber that is released through a slit-like air injection port extending in the longitudinal direction is formed inside the internal duct, and an inner surface of the lower cover Spaces as air suction chambers communicating with the outside through slit-like air suction ports extending in parallel with the air injection ports are formed between the outer surfaces of the internal ducts. The internal duct is connected to an air source (gas pressurizing mechanism) through the intake duct, and air is injected from the internal duct (air injection chamber) through the air injection port by the pressurized air from the air source. Further, the air suction chamber configured in the lower cover communicates with a space (air reservoir) inside the upper cover provided at the upper portion of the lower cover. The space inside the upper cover is configured as an exhaust path exhausted through an exhaust duct, and outside air is sucked into the air suction chamber of the lower cover through an air suction port by an exhaust action through the exhaust path. .

  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 clearance between the cleaning head and the surface of the object to be cleaned is maintained at a predetermined interval. Thus, the relative movement between the cleaning head and the object to be cleaned is performed. In the process, dust on the surface of the object to be cleaned is blown by the air ejected from the air ejection port, and the dust is removed from the surface of the object to be cleaned by being sucked from the air suction port together with the outside air. .

JP 2014-30806 A

  By the way, in order to cope with the increase in the size of the object to be cleaned, the length in the longitudinal direction of the cleaning head having the above-described structure is increased (for example, the width: about 110 mm, the height: about 240 mm, and the length: 4, 000 mm), the cleaning head may be bent by its own weight with the central portion (center of gravity) in the longitudinal direction as the lowest point. In order to prevent such a deflection 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 is increased.

  The present invention has been made in view of such circumstances, and provides a cleaning head that is difficult to bend even if the length in the longitudinal direction is increased.

  The cleaning head according to the present invention is a long body, and includes a head body having a gas ejection chamber that is released to the outside through the gas ejection port and a gas suction chamber that is in communication with the outside through the gas suction port, and the head body. And an exhaust duct 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 the operation of the gas pressurizing mechanism The gas is ejected from the gas ejection chamber through the gas ejection port, and the gas suction chamber of the head body communicates with the exhaust path formed by the exhaust duct, and the exhaust action through the exhaust path The cleaning head is configured to suck outside air through the gas suction port into the gas suction chamber, and the head body and the exhaust duct are integrated with each other. A bending rigidity of the exhaust duct in the direction is larger than a bending rigidity of the head main body in the arrangement direction, and has a pull-up fixing mechanism that pulls and fixes a predetermined portion in the longitudinal direction of the head main body toward the exhaust duct. Become.

  According to such a configuration, the predetermined portion in the longitudinal direction of the head main body is lifted to the exhaust duct side where the bending rigidity in the arrangement direction of the head main body and the exhaust duct united together by the pull-up fixing mechanism is larger. Since it is fixed, it is possible to suppress the head body from being bent by its own weight. As a result, the deflection of the entire cleaning head in which the head body and the exhaust duct are combined and integrated can be suppressed.

  In the cleaning head according to the present invention, the lifting and fixing mechanism may be configured to lift and fix the central portion in the longitudinal direction of the head body toward the exhaust duct.

  According to such a configuration, even if the head main body is bent so that the central portion in the longitudinal direction thereof is lowered, the pulling and fixing mechanism can suppress the bending of the head main body.

  In the cleaning head according to the present invention, the pull-up fixing mechanism has one end fixed to the upper portion of the head main body and a screw portion formed in a range having at least the other end, and the exhaust path of the exhaust duct. A rod-like member extending across the inside, the rod-like member extending from the head main body side pass therethrough, and a block body provided on the upper inner surface of the exhaust duct, and movement to the head main body side are regulated. It can be set as the structure which has an adjustment nut member screwed together with the said thread part of the said rod-shaped member which penetrates the said block body in the state contact | abutted to the said block body.

  With such a configuration, the amount by which the predetermined portion in the longitudinal direction of the head main body is pulled up to the exhaust duct side can be adjusted by the degree of screwing of the adjustment nut member into the screw portion.

  By configuring the head main body and the exhaust duct with materials of different properties (for example, Young's modulus), and by configuring the head main body and the exhaust duct in different physical structures, the bending rigidity of the exhaust duct can be reduced. It can be greater than the bending stiffness.

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

  In addition, you may make it make the bending rigidity of an exhaust duct larger than the bending rigidity of a head main body by making both materials and shapes differ.

  According to the cleaning head of the present invention, since the deflection of the entire cleaning head in which the head main body and the exhaust duct are joined together is suppressed, 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 the cleaning head according to the embodiment of the present invention. FIG. 3 is a bottom view partially showing the cleaning head according to the embodiment of the present invention. 4A is a view of the cleaning head shown in FIG. FIG. 4B is a cross-sectional view showing a cross section BB of the cleaning head shown in FIG. 4C is a cross-sectional view showing a cross section taken along the line CC of the cleaning head shown in FIG. FIG. 5 is a diagram for explaining the action of suppressing the deflection 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 FIGS. 4A to 4C. 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 arrow 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 cleaning head shown in FIG. It is sectional drawing which shows CC 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 An exhaust duct 13 having a U-shaped cross section coupled to the head main body 11 and a nozzle head 12 fixed to the lower surface of the head main body 11 are formed so as to form 130 (see FIGS. 4A to 4C). 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 Combined. A plate 14 is fixed to one end portion of a unit configured by integrating the head main body 11, the nozzle head 12 and the exhaust duct 13, and a plate 15 is fixed to the other end portion of the unit. The plate 15 passes through each of the exhaust port 16 and the air supply port 17, and an exhaust path 130 in the exhaust duct 13 communicates with the exhaust port 16, and an air injection chamber 112 (described later in FIG. 4C) communicates with the air supply port 17. Note that one end of each of the head body 11, the nozzle head 12, and the exhaust duct 13 is closed by a plate 14.

Space within the head body 11, in particular, as shown in FIG 4A~ Figure 4C, each extending in the longitudinal direction _{D L} (direction perpendicular to the paper surface 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). In the head main body 11, as described above, the air ejection 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.

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. 4C). The plurality of through holes 115a and 115b are opposed to the opening portions 123a and 123b of the nozzle head 12, and the air suction chambers 113a and 113b of the head body 11 are respectively connected to 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 113 a and 113 b 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 are opposed to the gaps 124 formed in the partition wall 121 of the nozzle head 12. As a result, the air ejection chamber 112 of the head body 11 is released to the outside through the slit-shaped air ejection port 124 formed when the gap 124 formed in the partition wall 121 reaches 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 lifting and fixing mechanism 20 includes a support block 21, a lifting bolt 22 (bar-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 portion of the lifting bolt 22 is screwed into the central portion of the support block 21, and is further fastened and fixed by two nuts 23a and 23b. On the other hand, a fixed 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 fixing block 24 is formed with a hole through which the lifting bolt 22 extending from the support block 21 so as to cross the exhaust path 130 of the exhaust duct 13 is passed, and the hole is screwed to the other end of the lifting bolt 22. It expands as an accommodation space 25 for accommodating the adjusting nut 26. Thus, the adjustment nut 26 accommodated in the accommodation space 25 formed by expanding the hole through which the lifting bolt 22 of the fixed block 24 passes is accommodated in the fixed block 24 so that the movement toward the head body 11 side is restricted. The bolts 22 are screwed into contact with the bottom surface of the space 25.

  An adjustment hole is formed in the upper wall portion of the exhaust duct 13 corresponding to the accommodation space 25 of the fixed block 24. The adjustment nut 22 in the state of being accommodated in the accommodation space 25 of the fixed block 24 can be operated from the outside of the exhaust duct 13 through the adjustment hole. Usually, the adjustment 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, the air supply port 17 is connected to, for example, an air pump (gas pressurizing mechanism) that generates pressurized air. Pressurized air is supplied to the air ejection chamber 112 of the head body 11 through the air supply port 17 by the operation of the air pump. Thereby, the pressurized air from the air ejection chamber 112 is ejected through the air ejection port 124 a of the nozzle head 12. Further, a mechanism for sucking air, for example, a vacuum pump, is connected to the exhaust port 16, and an exhaust path through the exhaust port 16 by the operation of the vacuum pump and the exhaust path 130 of the exhaust duct 13 that follows the exhaust port 16 is generated. The air suction chambers 113a and 113b of the head main body 11 communicating with 130 are exhausted. Accordingly, 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 object G to be cleaned with a predetermined gap. In this state, the cleaning head 10 and the object to be cleaned G are moved relative to each other. At that time, outside air is sucked through the air suction ports 125a and 125b while air is ejected from the slit-shaped air ejection ports 124a. In the process, dust on the surface of the cleaning target G is blown up by the air jetted from the air jetting port 124a, and the dust blown up is sucked into the air suction chambers 113a and 113b from the air suction ports 125a and 125b together with the outside air. The Thereby, 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 on a support frame or the like, for example, as shown by a broken line L in FIG. 5, the head main body 11 tries to bend so that the center 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, the deflection of the entire cleaning head 10 in which the head main body 11 (and the nozzle head 12) and the exhaust duct 13 are combined and integrated can be suppressed. Thus, it is possible suppress the deflection of the entire cleaning head 10, can be realized in 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 being increased.

  The amount by which the central portion of the head body 11 is pulled up can be adjusted by adjusting the screwing amount of the adjustment bolt 26.

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

  The lifting bolt 22 has a threaded portion formed as a whole. However, in the lifting bolt 22 as a rod-shaped member, at least the adjustment nut 26 is screwed so that the lifting bolt 22 can be adjusted up and down. Should just 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 other 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. Furthermore, a plurality of air injection ports can be formed, and three or more air suction ports can be formed.

  As mentioned above, although embodiment of this invention and the modification of each part were demonstrated, this embodiment and the modification of each part are shown as an example, and are not intending limiting the range of invention. These novel embodiments described above can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and are 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. The cleaning head injects a gas such as air from the gas injection port onto the surface of the object to be cleaned. It is useful as a cleaning head in which dust is removed from the surface of the object to be cleaned by sucking outside air through a gas suction port facing the body.

DESCRIPTION OF SYMBOLS 10 Cleaning head 11 Head main body 12 Nozzle head 13 Exhaust duct 14, 15 End cover 16 Exhaust port 17 Supply port 18 Lid 20 Lifting fixing mechanism 21 Support block 22 Lifting bolt 23a, 23b Nut 24 Fixed block 25 Housing space 26 Adjustment Nut 111a, 111b Groove portion 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 portion 124 Gap 124a Air injection port 125a, 125b Air suction port

Claims (4)

A head body having a gas injection chamber that is a long body and is released to the outside through the gas injection port, and a gas suction chamber that communicates with the outside through the gas suction port;
An exhaust duct coupled to the head body so as to form an exhaust path extending longitudinally along the head body;
The gas injection chamber of the head body is connected to a gas pressurization mechanism, and gas is injected from the gas injection chamber through the gas injection port by the operation of the gas pressurization mechanism,
The gas suction chamber of the head body communicates with the exhaust path formed by the exhaust duct, and external air is sucked into the gas suction chamber through the gas suction port by an exhaust action through the exhaust path. A cleaning head
The bending rigidity of the exhaust duct in the arrangement direction of the head body and the exhaust duct that are integrated is larger than the bending rigidity of the head body in the arrangement direction,
A cleaning head having a lifting and fixing mechanism that lifts and fixes a predetermined portion of the head body in the longitudinal direction toward the exhaust duct.   The cleaning head according to claim 1, wherein the lifting and fixing mechanism lifts and fixes a central portion in a longitudinal direction of the head main body toward the exhaust duct. The lifting and fixing mechanism is
A rod-like member having one end fixed to the upper portion of the head main body and a threaded portion formed in a range having at least the other end, and extending across the exhaust path of the exhaust duct;
The block member provided on the upper inner surface of the exhaust duct, through which the rod-like member extending from the head body side passes;
3. An adjustment nut member that is screwed into the screw portion of the rod-shaped member that penetrates the block body in a state in which the block body is in contact with the block body so that movement toward the head main body is restricted. The cleaning head described.   4. The cleaning head according to claim 1, wherein an area of a cross section perpendicular to the longitudinal direction of the exhaust duct is larger than an area of a cross section perpendicular to the longitudinal direction of the head main body.

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