Dust collector

Abstract

To provide a dust collector that can remove adherent substances on a wall surface or the like by irradiating laser light from the head of a laser device, efficiently collect the removed substances, and ensure work efficiency, operability, and the cleanliness and safety of the working environment. 【Solution means】The dust collector 1 of the present disclosure includes a passage pipe 10 that is formed to be hollow and long, and whose internal space is a passage space SP for allowing the collected substances to pass through; a holding frame 20 disposed at the base end of the passage pipe 10 for holding the head such that the optical axis of the laser light is along the longitudinal direction of the passage pipe 10; a suction body 30 disposed at the tip of the passage pipe 10 and having a suction port VP formed therein that communicates with the passage space SP for sucking in the substances removed by the laser light through the suction port VP; and a regulating arm portion 40 connected to the passage pipe 10 for defining the separation distance between the suction port VP and a wall surface or the like.

Description

Technical Field

[0001] The present invention relates to a dust collector for collecting, by negative pressure, a substance removed when laser light is irradiated from a head of a laser device toward a predetermined wall surface or floor surface and the substance attached to the wall surface or floor surface is removed.

Background Art

[0002] Conventionally, a technique for removing unnecessary substances such as rust and paint attached to a metal wall surface or floor surface using a laser device has been known. This type of laser device irradiates laser light from a hand-held head and peels off and removes unnecessary substances by the light energy.

[0003] For example, as a conventional device for removing impurities using laser light, there is known a device that irradiates laser light from the outside of a wall surface or the like and can remove deposits such as dust and vapor attached to the inner surface without damaging the wall surface or the like (see, for example, Patent Document 1). In such a device, the bonding force of the deposit is weakened by the irradiation of the laser light, and after the deposit is peeled off, the deposit is collected by a suction device.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, there has been a problem that unnecessary substances removed by laser light become fine particles and scatter in the air, deteriorating the working environment. For this reason, although a device having a dust collection function as in Patent Document 1 described above has also been proposed, conventional dust collectors have problems such as the laser head and the dust collection unit being separate bodies or the dust collection efficiency not being sufficient.

[0006] Particularly, when performing work while moving a laser head relative to a wall surface or the like, it has been difficult to maintain an appropriate distance between the dust collection unit and the wall surface or the like, and there has been a problem that stable dust collection performance cannot be obtained. Further, since an operator has to perform work for a long time while holding the device, improvement in operability and work efficiency has also been demanded. Thus, it can be said that there has been room for improvement in the conventional device from the viewpoints of work efficiency improvement and safety.

[0007] The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a dust collector that can efficiently collect removed substances while removing adhering substances on a wall surface or the like by laser light irradiation from the head of a laser device, and can ensure work efficiency, operability, cleanliness of the work environment, and safety.

Means for Solving the Problem

[0008] The above-described object of the present invention is achieved by the following configuration. [1] A laser dust collection jig for collecting, by negative pressure, a substance removed when laser light is irradiated from the head of a laser device toward a predetermined surface and the substance adhering to the predetermined surface is removed, comprising: a passage pipe that is formed in a hollow and long shape, and whose internal space is a passage space for allowing the collected substance to pass through; a holding frame disposed at a base end portion of the passage pipe for holding the head such that the optical axis of the laser light is along the longitudinal direction of the passage pipe; a suction body disposed at a tip end portion of the passage pipe and having a suction port formed therein that communicates with the passage space, and sucking the substance removed by the laser light through the suction port; a regulating arm portion connected to the passage pipe for defining a separation distance between the suction port and the predetermined surface; and the suction port is disposed laterally with respect to the passage pipe such that, in a side view with respect to the longitudinal direction of the passage pipe, an included angle between a virtual line extending in a vertical direction with respect to the suction port and the longitudinal direction of the passage pipe is an obtuse angle. In the longitudinal direction of the passage pipe, the tip of the restricting arm portion is disposed ahead of the tip of the suction body. Dust collector. [2] The restricting arm portion has a pair of leg portions. The pair of leg portions extend along the longitudinal direction of the passage pipe and are spaced apart from each other in the width direction of the passage pipe. The tip portions of the pair of leg portions are each engaged with the predetermined surface. The dust collector according to [1]. [3] The restricting arm portion is connected to the passage pipe at the base ends of the pair of leg portions. The pair of leg portions have a pair of guide rollers. Each of the pair of guide rollers is disposed at the tip portion of each of the pair of leg portions. The dust collector according to [2]. [4] The guide roller is formed in a disk shape. An elastic body is attached to the circumferential surface of the guide roller over its circumferential direction. The dust collector according to [3]. [5] The suction body has a hollow truncated quadrangular pyramid portion. The truncated quadrangular pyramid portion communicates with the passage space at its base and is disposed such that its bottom faces outward. The suction port is formed at the periphery of the bottom of the truncated quadrangular pyramid portion. The dust collector according to [1]. [6] The suction port and the pair of leg portions are arranged so as to sandwich the axis of the passage pipe in the radial direction of the passage pipe. The dust collector according to [2].

[0009] It is preferable to adopt the configuration of [1]. In this case, the removal substance can be efficiently collected through the passage space formed inside the passage pipe. In particular, since the suction port is arranged to face laterally with respect to the passage pipe and the internal angle between the suction port and the longitudinal direction of the passage pipe is an obtuse angle, substances removed from, for example, a wall surface or the like (an example of a predetermined surface) can be effectively captured. Further, since the regulation arm portion is connected to the passage pipe and regulates (maintains a constant) the separation distance between the suction port and the wall surface or the like, stable dust collection performance can be maintained during operation. Furthermore, with the configuration in which the tip of the regulation arm portion is arranged ahead of the tip of the suction body, contact between the suction body and the wall surface or the like during operation can be prevented, damage to the suction body can be prevented, and stable dust collection efficiency can be ensured. With such a configuration, in the operation of removing the adhered substance on the wall surface or the like by the laser device, an efficient removal operation can be realized while maintaining the cleanliness and safety of the working environment.

[0010] It is preferable to adopt the configuration of [2] above. In this case, since the regulation arm portion has a pair of legs, the stability and operability of the dust collector can be further improved. Specifically, the dust collector can be stably supported with respect to the wall surface or the like by the pair of legs extending along the longitudinal direction of the passage pipe and spaced apart in the width direction. Further, since the tip portions of each of the pair of legs engage with the wall surface or the like, the dust collector can be smoothly moved along the wall surface or the like while maintaining an appropriate separation distance between the suction port and the wall surface or the like. In this way, with the stable support structure by the pair of legs, an efficient dust collection operation can be realized while reducing the burden on the operator.

[0011] It is preferable to adopt the configuration of [3] above. In this case, since the pair of legs of the regulating arm portion are connected to the passage pipe at their base ends, the structural stability of the dust collector can be enhanced. Further, since the pair of legs have guide rollers and guide rollers are respectively disposed at their tip ends, the frictional resistance when moving the dust collector along a wall surface or the like can be reduced. As a result, an operator can smoothly operate the dust collector with a lighter force, and fatigue during long-time work can be alleviated. Furthermore, since abrasion occurring at the contact portion with a wall surface or the like can be prevented by the rotation of the guide rollers, the durability of the dust collector is improved and the risk of damaging a wall surface or the like can also be reduced. Thus, by devising the configuration of the regulating arm portion, workability and safety can be made compatible.

[0012] It is preferable to adopt the configuration of [4] above. In this case, by forming the guide rollers in a disk shape, an appropriate contact area with a wall surface or the like can be ensured, and the stability of the dust collector can be improved. Further, by attaching an elastic body to the circumferential surface portion of the guide rollers over the circumferential direction, the impact at the time of contact with a wall surface or the like can be absorbed, and vibrations and noises during work can be reduced. Furthermore, by generating an appropriate frictional force by the elastic body, smooth movement can be realized while ensuring an appropriate gripping force with respect to a wall surface or the like. With such a configuration, an operator can perform precise work in a stable posture, and work efficiency and safety can be enhanced. Also, since the elastic body also functions as a cushioning material for protecting a wall surface or the like, the risk of damaging or injuring a wall surface or the like can be minimized.

[0013] It is preferable to adopt the configuration of [5] above. In this case, since the suction port is formed as the peripheral edge of the bottom of the quadrangular pyramid frustum portion, dust can be collected from a wide range with respect to the removal substances from a wall surface or the like, and the dust collection efficiency can be improved.

[0014] It is preferable to adopt the configuration of [6] above. In this case, by arranging the suction port and the pair of legs so as to sandwich the axis of the passage pipe when viewed in the radial direction of the passage pipe, the weight balance of the dust collector can be appropriately maintained. With such an arrangement configuration, the stability during operation is improved, and the inclination and vibration of the dust collector can be prevented. Further, due to the symmetric structure centered on the axis of the passage pipe, the operator can intuitively operate the dust collector, realizing an improvement in work efficiency and a reduction in fatigue.

Effects of the Invention

[0015] According to the present invention, while removing the adhering substances on the wall surface and the like by irradiating laser light from the head of the laser device, the removed substances can be efficiently dust-collected, and the efficiency, operability, cleanliness, and safety of the working environment can be ensured.

[0016] As described above, the present invention has been briefly explained. Further, the details of the present invention will be further clarified by reading through the embodiments (hereinafter referred to as "embodiments") for carrying out the invention described below with reference to the attached drawings.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying out the Invention

[0018] Hereinafter, one or more embodiments specifically disclosing the dust collector according to the present invention will be described in detail with appropriate reference to the attached drawings.

[0019] However, detailed descriptions that are more than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid making the following description unnecessarily redundant and to facilitate the understanding of those skilled in the art. Also, each of the accompanying drawings is to be viewed in accordance with the orientation of the reference numerals.

[0020] In addition, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and it is not intended to limit the subject matter described in the scope of the utility model registration claims thereby.

[0021] <Explanation of Terms> The term "including" or "characterized by", which is synonymous with "comprising" and "containing", is to be construed in an inclusive or open-ended sense and does not exclude additional, unrecited elements or method steps. "Including" is a technical term used in claim language, which means that the recited claim elements are essential, but other claim elements may be added to further form a composition within the scope of the claim. The terms "comprising" and "having" are also intended to be non-exclusive in the same manner, meaning that there may be further elements in addition to the recited elements.

[0022] Also, as used herein, the phrase "consisting of" excludes any element, step, or component not specified in the claim. When the phrase "consisting of (or its variants)" appears not immediately after the preamble but rather in the body clause of the claim, it limits only the elements shown in that clause and does not exclude other elements from the entire claim. The phrase "consisting essentially of" as used herein limits the scope of the claim to those that, in addition to the specified elements or method steps, do not substantially affect the main components and novel features (singular or plural) of the claimed subject matter.

[0023] Regarding the terms "comprising", "consisting of", and "consisting essentially of", when one of these three terms is used in this specification, the subject matter disclosed and claimed in the present invention may also include the use of either of the other two terms. Therefore, in some embodiments not explicitly stated otherwise, any instance of "comprising" may be replaced by "consisting of" or "consisting essentially of".

[0024] The term "process" or "step" may be used explicitly or implicitly in relation to the features of a process or method. However, unless the order or procedure is specified, the order or procedure among such explicit or implicit processes or steps is not limited.

[0025] <First Embodiment> Based on FIGS. 1 to 5, the dust collector 1 according to the first embodiment of the present invention will be described.

[0026] [Regarding the basic configuration of the dust collector] With reference to FIGS. 1 to 4, an example of the basic configuration of the dust collector 1 according to this embodiment will be described. FIG. 1 is an upper perspective view for explaining an example of the basic configuration of the dust collector 1 of the embodiment. FIG. 2 is a front view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1. FIG. 3 is a side view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1. FIG. 4 is a top view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1.

[0027] The dust collector 1 of this embodiment is for efficiently collecting substances removed from a predetermined wall surface, floor surface, etc. (not shown, an example of a "predetermined surface", hereinafter also referred to as "wall surface, etc.") by laser light (not shown) irradiated from the head (not shown) of a laser device (not shown) toward the wall surface, etc.

[0028] As shown in FIGS. 1 to 4, the dust collector 1 of the present embodiment is configured to include, as basic components, a passage pipe 10, a holding frame 20, a suction body 30, and a regulating arm portion 40.

[0029] The passage pipe 10 is formed as a hollow and long cylindrical member made of metal such as an aluminum alloy, and a passage space SP for transporting removal substances is formed (partitioned) inside thereof.

[0030] The passage pipe 10 has a double pipe structure and is provided so as to be telescopically extendable. That is, the passage pipe 10 has an inner cylinder 11, an outer cylinder 12, and a fastening member 13. The inner cylinder 11 is disposed on the upper side in FIGS. 1 to 3, the outer cylinder 12 is disposed on the lower side, and the inner cylinder 11 is inserted into the outer cylinder 12. By adjusting the length of this insertion, the overall length of the passage pipe 10 is determined. Further, in order to fix the adjusted length, the fastening member 13 is attached to the insertion portion. By pressing the fastening member 13 against the insertion portion from the radially outer side to the inner side to narrow it, the fixing (fastening) of the inner cylinder 11 and the outer cylinder 12 is realized.

[0031] The holding frame 20 is disposed at the tip portion (upper side in FIGS. 1 to 3) of the passage pipe 10, and the head of the laser device is detachably provided, and the attached head is fixed and held. The holding frame 20 includes a handle grip 21, a plurality of frames 22, and a fixing clamp 23.

[0032] The plurality of frames 22 are assembled in a predetermined shape (substantially inverted U shape with corners in the present embodiment) so as to extend outward in the radial direction of the passage pipe 10. By this assembly, the plurality of frames 22 can surround and accommodate the head of the laser device with a box-shaped frame, and can fix and support the head in the accommodated state. At the time of this support, the plurality of frames 22 fix the head so that the optical axis of the laser light is along the passage pipe 10 and its irradiation direction faces a wall surface or the like (lower side in FIGS. 1 to 3).

[0033] The fixing clamp 23 enables an operator to detachably fix the holding frame 20 to the passage pipe 10 at an arbitrary position by appropriately operating the fixing clamp 23.

[0034] The handle grip 21 is arranged on the holding frame 20 in a direction opposite to (line-symmetric with) the plurality of frames 22 about the axis AC of the passage pipe 10. By means of the handle grip 21, an operator can grip and handle the dust collector 1. That is, the handle grip 21 enables the operator to smoothly perform positioning, movement of the dust collector 1, or attachment / detachment operations of the head of the laser device.

[0035] In a manner of being connected to the tip port of the passage pipe 10 (an example of "arranged at the tip portion"), for example, a suction body 30 made of synthetic resin (details will be described later) is arranged. That is, the suction body 30 is attached by being covered on the tip port of the ventilation pipe. Further, a suction port VP communicating with the passage space SP is formed in the suction body 30, and the suction port VP opens toward the side of the passage pipe 10.

[0036] At the tip portion of the passage pipe 10, a metal regulating arm portion 40 extends laterally from the outer peripheral surface of the passage pipe 10 (an example of "connection"), and the regulating arm portion 40 is arranged to protrude beyond the tip of the suction body 30 in the longitudinal direction of the passage pipe 10. Thereby, a predetermined separation distance is appropriately maintained between the suction port VP and a wall surface or the like, and it is regulated (avoided) that the suction body 30 directly contacts the wall surface or the like. That is, by the regulating arm portion 40 contacting the wall surface or the like prior to the suction body 30, an appropriate separation distance between the suction port VP and the wall surface or the like is maintained, and a stable dust collection operation is realized.

[0037] In addition, in this embodiment, a dust collecting device (not shown, a vacuum cleaner) is connected to the base end port of the passage pipe 10. A general vacuum device is exemplified as the dust collecting device. The dust collecting device has an electric motor, a fan, a filter unit, and a dust collecting tank, and a negative pressure is generated in the passage space SP. Due to this negative pressure, the substances removed from the wall surface or the like by the laser light are efficiently sucked from the suction port VP and conveyed (passed) to the dust collecting device through the passage space SP. Specifically, when the electric motor rotates the fan, a strong negative pressure is generated, and the air containing the removed substances sucked by this negative pressure passes through the filter unit. The removed substances are collected by the filter and accumulated in the dust collecting tank, and the air purified by the filter unit is discharged outside the device. Further, the dust collecting tank is detachable and is configured to facilitate the disposal of the accumulated removed substances.

[0038] [Configuration of the suction body] With reference to FIGS. 1 to 5, an example of the configuration of the suction body 30 will be described. FIG. 1 is an upper perspective view for explaining an example of the basic configuration of the dust collecting tool 1 of this embodiment. FIG. 2 is a front view for explaining an example of the configuration of the dust collecting tool 1 shown in FIG. 1. FIG. 3 is a side view for explaining an example of the configuration of the dust collecting tool 1 shown in FIG. 1. FIG. 4 is a top view for explaining an example of the configuration of the dust collecting tool 1 shown in FIG. 1. FIG. 5 is a lower perspective view for explaining an example of the configuration of the suction body 30 and the regulation arm portion 40 shown in FIG. 1.

[0039] As shown in FIGS. 1 to 5, the suction body 30 is made of, for example, a synthetic resin material and is formed as a cylindrical member bent in the middle as a whole. The suction body 30 is configured to have a hollow cylindrical portion 31 and a quadrangular frustum portion 32.

[0040] The cylindrical portion 31 of the suction body 30 is the base end portion of the suction body 30, is concentric with the axis AC of the passage pipe 10, and is attached (inserted) so as to cover the tip port of the passage pipe 10.

[0041] The frustum-shaped portion 32 of the suction body 30 is the tip portion of the suction body 30, and the periphery of the bottom of the frustum shape serves as a suction port VP for directly sucking the substance removed by the laser beam. Specifically, the bottom surface of the frustum-shaped portion 32 is formed in a rectangular shape, and the entire peripheral portion thereof functions as the suction port VP. The side surface of the frustum-shaped portion 32 is inclined so as to expand toward the outside, and the removed substance is guided to the suction port VP along this inclined surface.

[0042] And the suction port VP is arranged laterally with respect to the passage pipe 10 such that, in a side view with respect to the longitudinal direction of the passage pipe 10, a virtual line VL extending in the vertical direction with respect to the suction port VP and the longitudinal direction of the passage pipe 10 form an obtuse internal angle IA therebetween (such that the angle formed by the virtual line VL and the passage pipe 10 is greater than 90 degrees) (see FIG. 3).

[0043] [Configuration of the regulating arm portion 40] With reference to FIGS. 1 to 5, an example of the configuration of the regulating arm portion 40 will be described. FIG. 1 is an upper perspective view for explaining an example of the basic configuration of the dust collector 1 of the present embodiment. FIG. 2 is a front view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1. FIG. 3 is a side view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1. FIG. 4 is a top view for explaining an example of the configuration of the dust collector 1 shown in FIG. 1. FIG. 5 is a lower perspective view for explaining an example of the configuration of the suction body 30 and the regulating arm portion 40 shown in FIG. 1.

[0044] As shown in FIGS. 1 to 5, the regulating arm portion 40 has a connecting annular portion 41 and a pair of leg portions 42.

[0045] The connecting annular portion 41 is made of a metal material such as an aluminum alloy, for example, and is disposed at the tip of the passage pipe 10. The connecting annular portion 41 is formed in an annular shape and is externally fitted and connected to the passage pipe 10 at its inner periphery. The connecting annular portion 41 is disposed inward in the longitudinal direction of the passage pipe 10 with respect to the aforementioned suction body 30.

[0046] Each of the pair of legs 42 is formed in an L-shaped bar shape made of a metal such as an aluminum alloy, for example. The base end portion extends radially outward, and bends (changes direction) from the middle thereof and extends along the longitudinal direction of the passage pipe 10. Each of the pair of legs 42 is connected to a part of the outer peripheral edge of the connecting annular portion 41 at its base end portion, and the pair of legs 42 are arranged to face each other in the width direction of the passage pipe 10 at their tip ends. Note that the connecting annular portion 41 and the pair of legs 42 may be integrally provided, for example, by die casting or cutting.

[0047] The pair of legs 42 are configured to have a pair of guide rollers 43, and at each tip end portion of the pair of legs 42, the guide rollers 43 are rotatably supported via bearings.

[0048] Each tip end portion of the pair of legs 42 is arranged on the tip end side of the opening position of the suction port VP including the guide rollers 43. In other words, each tip end of the pair of legs 42 protrudes in the longitudinal direction of the passage pipe 10 from the opening end of the suction port VP. Due to this arrangement relationship, an appropriate interval (separation distance) is defined (maintained) between the suction port VP and the wall surface or the like in a state where the guide roller 43 is in contact with the wall surface or the like. As a result, the operator does not need to perform special operations and can concentrate on the removal work of unnecessary adhering substances on the wall surface or the like while always maintaining an appropriate dust collection position.

[0049] The guide roller 43 is formed in a disk shape, and an annular elastic body 44 having a predetermined thickness is attached to the entire circumferential surface thereof. By this elastic body 44, the impact at the time of contact with the wall surface or the like is absorbed, and an appropriate frictional force is generated, thereby realizing stable movement of the dust collector 1.

[0050] The elastic body 44 of the guide roller 43 is arranged over the entire circumference in the circumferential direction of the guide roller 43 and is fixed to the outer peripheral surface of the guide roller 43 by, for example, an adhesive. In the present embodiment, a synthetic rubber having wear resistance and appropriate elasticity is adopted as the material of the elastic body 44, and the friction coefficient at the contact surface with the wall surface or the like is appropriately set. This elastic body 44 alleviates the impact generated when the guide roller 43 rolls on the wall surface or the like, generates an appropriate frictional force, and realizes stable movement of the dust collector 1.

[0051] And the aforementioned suction port VP and the pair of legs 42 are symmetrically arranged in the radial direction (width direction) of the passage pipe 10 so as to sandwich the axis AC of the passage pipe 10. In other words, the pair of legs 42 are arranged on the opposite side of the suction port VP with respect to the axis AC of the passage pipe 10, that is, symmetrically. With such a symmetric structure, the weight balance of the dust collector 1 is maintained, and the stability during operation is ensured. Further, the interval between the pair of legs 42 is appropriately set, and the grounding stability is realized by this interval.

[0052] [Regarding the usage method of the dust collector] The usage method of the dust collector 1 according to the present embodiment will be described.

[0053] The dust collector 1 of the present embodiment is used to efficiently collect dust and debris generated during the removal operation of unnecessary adhering substances on the wall surface or the like by laser light.

[0054] First, the operator holds the dust collector 1 with the head of the laser device attached to the holding frame 20 and brings the pair of guide rollers 43 into contact with the wall surface or the like. By the elastic body 44 of the guide roller 43 maintaining appropriate contact with the wall surface or the like, the dust collector 1 maintains a stable state. At this time, due to the symmetrical arrangement of the suction body 30 and the pair of legs 42, the dust collector 1 maintains a good balance.

[0055] Also, at this time, the suction port VP of the frustum-shaped portion 32 of the suction body 30 is held (maintained) at an appropriate distance from the wall surface or the like by the regulation arm portion 40. In other words, this distance is automatically defined by the guide rollers 43 provided at the tip portions of the pair of leg portions 42. That is, the operator can always maintain the optimal dust collection position and perform the removal work without requiring any special operation.

[0056] During the removal work by the laser light, the removal substance is efficiently guided to the suction port VP along the inclined surface of the frustum-shaped portion 32. Since the suction port VP is arranged to face laterally with respect to the passage pipe 10, it is possible to efficiently collect dust while smoothly moving along the wall surface or the like.

[0057] Then, during the removal work, the dust collector 1 is moved in the required direction while keeping the guide roller 43 in contact with the wall surface or the like. The elastic body 44 of the guide roller 43 absorbs the impact at the time of contact with the wall surface or the like and generates an appropriate frictional force, enabling stable movement.

[0058] In this way, the dust collector 1 of the present embodiment can stably exhibit excellent dust collection performance while ensuring the workability and operability of the operator.

[0059] [·Regarding the features and advantages of the present embodiment] [1] As described above, according to the dust collector 1 of the present embodiment, when laser light is irradiated from the head of the laser device toward a predetermined wall surface or the like (an example of a predetermined surface) and the substance adhering to the wall surface or the like is removed, it is a jig for laser dust collection for collecting the removed substance by negative pressure. The dust collector 1 of the present embodiment is formed in a hollow and long shape, and the internal space thereof is a passage space SP for allowing the collected substance to pass through, a passage pipe 10, and a base end portion of the passage pipe 10. A holding frame 20 disposed for holding the head so that the optical axis of the laser light is along the longitudinal direction of the passage pipe 10, and a suction port VP communicating with the passage space SP is formed at the tip of the passage pipe 10. A suction body 30 that sucks in the substance removed by the laser light through the suction port VP, and a regulating arm portion 40 connected to the passage pipe 10 for defining the separation distance between the suction port VP and the wall surface or the like. The suction port VP is arranged laterally with respect to the passage pipe 10 in a side view with respect to the longitudinal direction of the passage pipe 10 so that an internal angle IA between a virtual line VL extending in the vertical direction with respect to the suction port VP and the longitudinal direction of the passage pipe 10 is an obtuse angle. In the longitudinal direction of the passage pipe 10, the tip of the regulating arm portion 40 is arranged ahead of the tip of the suction body 30.

[0060] Therefore, the removed substance can be efficiently collected through the passage space SP formed inside the passage pipe 10. In particular, since the suction port VP is arranged laterally with respect to the passage pipe 10 and the internal angle IA between the suction port VP and the longitudinal direction of the passage pipe 10 is formed as an obtuse angle, for example, the substance removed from the wall surface or the like can be effectively captured. Further, since the regulating arm portion 40 is connected to the passage pipe 10 to define (maintain a constant) the separation distance between the suction port VP and the wall surface or the like, stable dust collection performance can be maintained during the operation. Furthermore, with the configuration in which the tip of the regulating arm portion 40 is arranged ahead of the tip of the suction body 30, it is possible to prevent the suction body 30 from contacting the wall surface or the like during the operation, prevent damage to the suction body 30, and ensure stable dust collection efficiency. With such a configuration, in the operation of removing the adhering substance on the wall surface or the like by the laser device, an efficient removal operation can be realized while maintaining the cleanliness and safety of the working environment.

[0061] [2] Further, according to the dust collector 1 of the present embodiment, the regulating arm portion 40 has a pair of leg portions 42. The pair of leg portions 42 extend along the longitudinal direction of the passage pipe 10 and are arranged apart from each other in the width direction of the passage pipe 10. The tip portions of each of the pair of leg portions 42 engage with a wall surface or the like.

[0062] Therefore, since the regulating arm portion 40 has a pair of leg portions 42, the stability and operability of the dust collector 1 can be further improved. Specifically, the pair of leg portions 42 extending along the longitudinal direction of the passage pipe 10 and arranged apart from each other in the width direction can stably support the dust collector 1 with respect to a wall surface or the like. Further, since the tip portions of each of the pair of leg portions 42 engage with a wall surface or the like, the dust collector 1 can be smoothly moved along the wall surface or the like while maintaining an appropriate separation distance between the suction port VP and the wall surface or the like. Thus, with the stable support structure by the pair of leg portions 42, an efficient dust collection operation can be realized while reducing the burden on the operator.

[0063] [3] Further, according to the dust collector 1 of the present embodiment, the regulating arm portion 40 is connected to the passage pipe 10 at the base end portions of the pair of leg portions 42. The pair of leg portions 42 have a pair of guide rollers 43. Each of the pair of guide rollers 43 is disposed at the tip portion of each of the pair of leg portions 42.

[0064] Therefore, since the pair of legs 42 of the regulating arm portion 40 are connected to the passage pipe 10 at their base ends, the structural stability of the dust collector 1 can be enhanced. Further, the pair of legs 42 have guide rollers 43, and the guide rollers 43 are respectively disposed at their tip ends, so that the frictional resistance when moving the dust collector 1 along a wall surface or the like can be reduced. Thereby, an operator can smoothly operate the dust collector 1 with a lighter force, and the fatigue during long-time work can be alleviated. Furthermore, since wear generated at the contact portion with a wall surface or the like can be prevented by the rotation of the guide roller 43, the durability of the dust collector 1 is improved, and the risk of damaging a wall surface or the like can also be reduced. In this way, by devising the configuration of the regulating arm portion 40, workability and safety can be made compatible.

[0065] [4] Further, according to the dust collector 1 of the present embodiment, the guide roller 43 is formed in a disk shape. An elastic body 44 is attached to the circumferential surface portion of the guide roller 43 over its circumferential direction.

[0066] Therefore, by forming the guide roller 43 in a disk shape, an appropriate contact area with a wall surface or the like can be ensured, and the stability of the dust collector 1 can be improved. Further, by attaching the elastic body 44 to the circumferential surface portion of the guide roller 43 over the circumferential direction, the impact at the time of contact with a wall surface or the like can be absorbed, and the vibration and noise during work can be reduced. Furthermore, by generating an appropriate frictional force by the elastic body 44, smooth movement can be realized while ensuring an appropriate gripping force with respect to a wall surface or the like. With such a configuration, an operator can perform precise work in a stable posture, and the work efficiency and safety can be enhanced. Also, since the elastic body 44 also functions as a buffer material for protecting a wall surface or the like, the risk of giving damage or injury to a wall surface or the like can be minimized.

[0067] [5] Further, according to the dust collector 1 of the present embodiment, the suction body 30 has a hollow truncated quadrangular pyramid-shaped portion 32. The truncated quadrangular pyramid-shaped portion 32 communicates with the passage space SP at its base, and is disposed such that its bottom faces outward. The suction port VP is formed at the periphery of the bottom of the truncated quadrangular pyramid-shaped portion 32.

[0068] Therefore, since the suction port VP is formed as the peripheral edge of the bottom of the frustum-shaped portion 32, it is possible to collect the removed substances over a wide range with respect to the removed substances from the wall surface or the like, and improve the dust collection efficiency.

[0069] [6] Further, according to the dust collector 1 of the present embodiment, the suction port VP and the pair of leg portions 42 are arranged so as to sandwich the axial center AC of the passage pipe 10 when viewed in the radial direction of the passage pipe 10.

[0070] Therefore, by arranging the suction port VP and the pair of leg portions 42 so as to sandwich the axial center AC of the passage pipe 10 when viewed in the radial direction of the passage pipe 10, the weight balance of the dust collector 1 can be appropriately maintained. With such an arrangement configuration, the stability during operation is improved, and the inclination and vibration of the dust collector 1 can be prevented. Further, due to the symmetric structure centered on the axial center AC of the passage pipe 10, the operator can intuitively operate the dust collector 1, and the work efficiency can be improved and the fatigue can be reduced.

[0071] <Finally> The description of one or more specific embodiments is completed above, but the aspects of the present invention are not limited to these embodiments, and can be appropriately modified, improved, etc.

[0072] That is, it is obvious that those skilled in the art can conceive of various change examples, correction examples, substitution examples, addition examples, deletion examples, equivalent examples within the scope described in the claims for utility model registration, and it is naturally understood that those also belong to the technical scope of the present disclosure. Further, within the scope not departing from the gist of the invention, the respective components in the above-described embodiments may be arbitrarily combined.

[0073] <Supplementary Note> Furthermore, here, the features of the dust collector (1) according to one or more of the embodiments described above are briefly summarized and listed in the following [1] to [6] respectively.

[0074] [1] A laser dust collection jig for collecting the removed substance by negative pressure when laser light is irradiated from the head of a laser device toward a predetermined surface and the substance adhering to the predetermined surface is removed. A passage pipe that is formed in a hollow and long shape, and the internal space thereof is a passage space for allowing the collected substance to pass through. A holding frame disposed at the base end of the passage pipe for holding the head so that the optical axis of the laser light is along the longitudinal direction of the passage pipe. An inlet body that is disposed at the tip of the passage pipe and has a suction port communicating with the passage space, and sucks the substance removed by the laser light through the suction port. Including a regulating arm portion that is connected to the passage pipe and defines the separation distance between the suction port and the predetermined surface. The suction port is arranged laterally with respect to the passage pipe such that, in a side view with respect to the longitudinal direction of the passage pipe, the included angle between a virtual line extending in the vertical direction with respect to the suction port and the longitudinal direction of the passage pipe is an obtuse angle. In the longitudinal direction of the passage pipe, the tip of the regulating arm portion is arranged ahead of the tip of the inlet body. Dust collection jig. [2] The regulating arm portion has a pair of legs. The pair of legs extend along the longitudinal direction of the passage pipe and are spaced apart from each other in the width direction of the passage pipe. The tip of each of the pair of legs engages with the predetermined surface. The dust collection jig according to [1]. [3] The regulating arm portion is connected to the passage pipe at the base ends of the pair of legs. The pair of legs have a pair of guide rollers. Each of the pair of guide rollers is disposed at the tip of each of the pair of legs. The dust collection jig according to [2]. [4] The guide roller is formed in a disk shape. An elastic body is attached to the circumferential surface of the guide roller over its circumferential direction. The dust collector according to [3]. [5] The suction body has a hollow frustum of a square pyramid shape, and the frustum of the square pyramid shape communicates with the passage space at its base and is arranged such that its bottom faces outward. The suction port is formed at the periphery of the bottom of the frustum of the square pyramid shape. The dust collector according to [1]. [6] The suction port and the pair of legs are arranged so as to sandwich the axis of the passage pipe in the radial direction of the passage pipe. The dust collector according to [2].

[0075] Also, the effects corresponding to each of the above [1] to [6] are summarized and described below. Note that the following description of the effects is provided for those skilled in the art to fully understand the features according to the above [1] to [6], and it is not intended to limit the subject matter described in the scope of claims for utility model registration by these.

[0076] · Effects for the above [1] It is possible to efficiently collect the removed substances through the passage space formed inside the passage pipe. In particular, since the suction port is arranged to face laterally with respect to the passage pipe and the inner angle between the suction port and the longitudinal direction of the passage pipe is an obtuse angle, for example, substances removed from a wall surface or the like (an example of a predetermined surface) can be effectively captured. Further, since the regulation arm portion is connected to the passage pipe and regulates (maintains a constant) the separation distance between the suction port and the wall surface or the like, stable dust collection performance can be maintained during operation. Furthermore, with the configuration in which the tip of the regulation arm portion is arranged ahead of the tip of the suction body, it is possible to prevent the suction body from contacting the wall surface or the like during operation, prevent damage to the suction body, and ensure stable dust collection efficiency. With such a configuration, in the operation of removing the adhered substances on the wall surface or the like by the laser device, it is possible to realize an efficient removal operation while maintaining the cleanliness and safety of the working environment. · Effects for the above [2] Since the regulating arm portion has a pair of leg portions, the stability and operability of the dust collector can be further improved. Specifically, the dust collector can be stably supported against a wall surface or the like by the pair of leg portions that extend along the longitudinal direction of the passage pipe and are spaced apart in the width direction. Further, since the tip portions of the pair of leg portions engage with a wall surface or the like, the dust collector can be smoothly moved along the wall surface or the like while maintaining an appropriate separation distance between the suction port and the wall surface or the like. Thus, with the stable support structure by the pair of leg portions, an efficient dust collection operation can be realized while reducing the burden on the operator. · Operational effects on [3] Since the pair of leg portions of the regulating arm portion are connected to the passage pipe at their base ends, the structural stability of the dust collector can be enhanced. Further, since the pair of leg portions have guide rollers and guide rollers are respectively disposed at their tip portions, the frictional resistance when moving the dust collector along a wall surface or the like can be reduced. Thereby, the operator can smoothly operate the dust collector with a lighter force, and the fatigue during long-time work can be reduced. Furthermore, since abrasion occurring at the contact portion with a wall surface or the like can be prevented by the rotation of the guide rollers, the durability of the dust collector is improved and the risk of damaging the wall surface or the like can also be reduced. Thus, by devising the configuration of the regulating arm portion, workability and safety can be achieved at the same time. · Operational effects on [4] By forming the guide roller in a disk shape, an appropriate contact area with a wall surface or the like can be ensured, and the stability of the dust collector can be improved. Further, by attaching an elastic body over the circumferential surface of the guide roller in the circumferential direction, the impact at the time of contact with a wall surface or the like can be absorbed, and the vibration and noise during work can be reduced. Furthermore, by generating an appropriate frictional force by the elastic body, smooth movement can be realized while ensuring an appropriate gripping force against a wall surface or the like. With such a configuration, the operator can perform precise work in a stable posture, and the work efficiency and safety can be enhanced. Also, since the elastic body functions as a cushioning material for protecting a wall surface or the like, the risk of giving damage or injury to a wall surface or the like can be minimized. · Operational effects on [5] Since the suction port is formed as the periphery of the bottom of the quadrangular frustum-shaped portion, the removal substances from the wall surface or the like can be collected over a wide range, and the dust collection efficiency can be improved. · Operational effects on the above [6] By arranging the suction port and the pair of legs so as to sandwich the axis of the passage pipe when viewed in the radial direction of the passage pipe, the weight balance of the dust collector can be appropriately maintained. With such an arrangement configuration, the stability during operation is improved, and the inclination and vibration of the dust collector can be prevented. In addition, due to the symmetric structure centered on the axis of the passage pipe, the operator can intuitively operate the dust collector, and the work efficiency can be improved and the fatigue can be reduced.

Industrial Applicability

[0077] The present invention is useful as a dust collector that can remove the adhering substances on the wall surface or the like by irradiating laser light from the head of the laser device, efficiently collect the removed substances, and ensure the work efficiency, operability, cleanliness, and safety of the work environment.

Explanation of Signs

[0078] 1: Dust collector 10: Passage pipe 11: Inner cylinder 12: Outer cylinder 13: Fastening member 20: Holding frame 21: Handle grip 22: Frame 23: Fixing clamp 30: Suction body 31: Cylindrical portion 32: Quadrangular frustum-shaped portion 40: Regulation arm portion 41: Connecting annular portion 42: Legs 43: Guide roller 44: Elastic body AC: Axis IA: Inner angle SP: Passage space VL: Virtual line VP: Suction port

Claims

1. A laser dust collection jig for collecting dust of a substance removed by irradiating a laser beam from a head of a laser device onto a predetermined surface under negative pressure, comprising: a passage pipe formed in a hollow and elongated shape, and having an internal space serving as a passage space for allowing the collected substance to pass therethrough; a holding frame disposed at a base end portion of the passage pipe for holding the head such that an optical axis of the laser beam is along a longitudinal direction of the passage pipe; a suction body disposed at a tip end portion of the passage pipe, having a suction port communicating with the passage space, and sucking the substance removed by the laser beam through the suction port; a regulating arm portion connected to the passage pipe for defining a separation distance between the suction port and the predetermined surface; the suction port is disposed laterally with respect to the passage pipe such that, in a side view with respect to the longitudinal direction of the passage pipe, an internal angle between a virtual line extending in a vertical direction with respect to the suction port and the longitudinal direction of the passage pipe is an obtuse angle; in the longitudinal direction of the passage pipe, a tip end of the regulating arm portion is disposed ahead of a tip end of the suction body; a dust collection jig.

2. the regulating arm portion has a pair of legs; the pair of legs extend along the longitudinal direction of the passage pipe and are spaced apart from each other in a width direction of the passage pipe; tip end portions of the pair of legs are each engaged with the predetermined surface; the dust collection jig according to claim 1.

3. the regulating arm portion is connected to the passage pipe at base end portions of the pair of legs; the pair of legs have a pair of guide rollers; each of the pair of guide rollers is disposed at a tip end portion of each of the pair of legs; the dust collection jig according to claim 2.

4. the guide roller is formed in a disk shape; an elastic body is attached to a circumferential surface of the guide roller over its circumferential direction; the dust collection jig according to claim 3.

5. the suction body has a hollow frustum-shaped portion; the frustum-shaped portion communicates with the passage space at its base portion and is disposed such that its bottom faces outward; the suction port is a peripheral edge of the bottom of the frustum-shaped portion; the dust collection jig according to claim 1.

6. the suction port and the pair of legs are disposed so as to sandwich an axis of the passage pipe in a radial direction of the passage pipe; the dust collection jig according to claim 2.

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