JPH0675684U - Concrete dust remover - Google Patents

Abstract

(57) [Summary] [Purpose] Concrete dust generated during drilling is reliably sucked in to prevent scattering. [Structure] A through hole for allowing a drill blade D is provided at approximately the center, and vacuum is absorbed from the periphery. As a result, dust generated during drilling is also reliably removed by suction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a concrete dust removing device for surely sucking concrete dust generated during drilling when drilling a concrete floor or the like to prevent scattering.

[0002]

[Prior art]

 When drilling holes on the concrete floor for installing various devices or inserting cables with a concrete drill, if the concrete drill is directly applied to the concrete floor surface, a large amount of fine dust is generated during the drilling and scattered around. It will be done. In rooms such as offices and other offices that are already in use, this fine concrete dust may penetrate into precision equipment such as computers and processing machines installed in the room, causing various problems. . In addition, the scattering of fine dust causes the work environment to deteriorate.

In order to prevent this, one worker performs a drilling work at a predetermined position on the concrete floor surface, and another worker sucks concrete dust generated at this drilling position with a vacuum cleaner or the like. Then, it is a cooperative work by two workers.

[0004]

[Problems to be solved by the device]

 For the drilling work in the office where precision equipment is installed, the work efficiency is poor because the driller and the dust remover work in pairs, and it is difficult to reliably remove concrete dust by suction. In addition, the suction port of the vacuum cleaner is moved around the tip of the drill, which is dangerous for work. Furthermore, a method has been considered in which dust is sucked into a concrete drill so that the drilling work can be performed by one person.However, this is attached to the concrete drill and rotates together with the drill, which requires labor for attachment / detachment. Since the tip of the drill bit is invisible to the operator, the accuracy of the drilling position is poor. The flow velocity is increased and the dust is sucked into the vacuum cleaner from the inside of the main body, and the fine dust generated when concrete is drilled is reliably sucked and removed without scattering to the surroundings. Moreover, if the drill is pulled out from this device after perforation, the dust inside the perforation will also be removed by suction.

An object of the present invention is to enable a single operator to efficiently suction and remove dust generated when drilling a concrete floor, and to visually perforate the tip of the drill.

[0006]

[Means for Solving the Problems]

 The present invention has been made to achieve the above object, and has a cylindrical main body having a required diameter connected to a cleaner through a hose, and a donut-shaped top plate that closes the inner circumference of the top surface of the main body. It is composed of a mortar-shaped inner cylinder that is fitted and integrated inside the top plate, and has a space between the lower end of the inner cylinder and the lower end surface of the main body for sucking dust generated during drilling. The point is to do so.

[0007]

[Work]

 The concrete dust removing device of the present invention is placed at the position for drilling. In this dust removing device, a mortar-shaped inner cylinder is fitted into a main body having a required diameter to be integrated, and this main body is connected to a vacuum cleaner. Even if it is inserted, the tip of the drill can be visually observed by the operator and the hole can be drilled at the correct position, and the suction by the cleaner is such that the air above the drill is sucked from inside the main body along the inner peripheral surface of the inner cylinder. Become. As a result, the air flow flowing from the top to the bottom along the inner peripheral surface of the mortar-shaped inner cylinder becomes faster at the periphery of the drill point, and the fine dust particles of the concrete generated by drilling are dispersed in the four circumferences. Without being sucked, it is possible to surely suck, improve the working environment, and avoid adverse effects on existing equipment.

[0008]

【Example】

 Hereinafter, the concrete dust removing device of the present invention will be described with reference to the illustrated embodiment. In the figure, reference numeral 1 is a main body of a concrete dust removing device, which is usually in the shape of a cylinder having a required diameter and height as shown in the figure. The main body 1 and the main body 1 are made of synthetic resin or another material. The donut-shaped top plate 2 is integrally formed on the inner circumference of the top surface of the body, and the inner body 3 having a smaller diameter than the body diameter is integrally formed in the body 1 so as to be connected to the inner peripheral hole of the top plate 2 as necessary. When the main body 1 is placed on the concrete floor F so that the lower end of the inner main body 3 is located above the lower end of the main body 1 as shown in FIG. Make sure that there is a gap between them.

Further, a mortar-shaped inner cylinder 4 is fitted inside the inner body 3 and the upper end outer peripheral surface of the inner cylinder 4 is a top plate 3 or the inner body of the inner body 3 as shown in the drawing. The length is determined so that it is integral with the peripheral surface and the lower end is a free end and is located above the lower end of the main body 1. The inner diameter of the lower end portion of the inner cylinder 4 is appropriately determined by inserting a drill D therein and providing a space where the drilling work can be safely carried out with the outer peripheral surface of the drill.

Further, a hose connection port 6 for connecting to the vacuum cleaner 5 or another vacuum machine via a hose is provided on the outer peripheral surface of the cylindrical main body 1. This hose connection port shall be a short tube and shall be equipped with a fastener that fits the end of the hose and, if necessary, prevents it from coming off.

When the main body 1 is placed on a concrete floor surface and a drilling operation is performed, a pushing piece 7 is projectingly provided on the outer peripheral surface of the main body in order to prevent the placement position from being unintentionally shifted. This is so that when the main body 1 is placed on the concrete floor surface, the pushing piece 7 is also in contact with the concrete floor surface, and by stepping on this with the foot, the main body 1 is fixed at a predetermined position. Of course, the present invention can be used for drilling other than concrete.

Therefore, in the concrete dust removing device of the present invention configured as described above, the main body 1 is placed at a predetermined position, connected to the cleaner 8 via a hose, and the pressing piece 7 is fixed by stepping on it with a foot. And drive the vacuum cleaner. As a result, air flows downward from above the mortar-shaped inner cylinder 4 and is sucked through the inner peripheral surface of the main body. Due to the shape of the inner cylinder, the flow velocity of the air becomes faster from the upper position toward the lower position, becomes higher at the lower position of the lower end of the inner cylinder, and flows into the surrounding body. At this time, a drill bit is inserted into the inner cylinder, and while being pressed to a predetermined position on the concrete floor, the drill is rotated and punched. The concrete dust generated during drilling also gets on the air flow and is sucked by the vacuum cleaner from the inner circumference of the main body through the hose, and is not scattered on the four circumferences.

[0013]

[Effect of device]

 The concrete dust removing device of the present invention has a cylindrical main body having a required diameter, which is connected to a vacuum cleaner via a hose, a donut-shaped top plate that closes the inner circumference of the top surface of the main body, and is fitted and integrated inside the top plate. It is composed of a mortar-shaped inner cylinder, and a single operator has a space between the lower end of the inner cylinder and the lower end surface of the main body to suck in dust that is generated during drilling. There are advantages that the drilling work can be performed accurately and easily, and that dust generated during drilling is surely sucked and removed.

[Brief description of drawings]

FIG. 1 is a sectional view of a concrete dust removing device of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory diagram showing a usage state.

[Explanation of symbols]

 1 Main body 2 Top plate 3 Inner main body 4 Inner cylinder 5 Hose connection port 8 Vacuum cleaner

Claims (1)

[Scope of utility model registration request] 1. A concrete dust removing device, which has a through hole for allowing a drill blade at substantially the center thereof and is vacuum-absorbed from the surroundings.