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Water-proof sheet and water injection electric tool provided with same

A technology for power tools and waterproof sheets, which is used in manufacturing tools, grinding/polishing safety devices, metal processing equipment, etc., can solve problems such as tilting of waterproof sheets, falling to operators, and obstruction of waterproof sheet grinding and processing operations.

Inactive Publication Date: 2012-11-28
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the waterproof sheet will hinder the grinding process
[0007] In addition, for example, when chamfering the corners of the workpiece with a disc-shaped tool, the water injection electric tool is used in a state where the disc-shaped tool is tilted backward from the horizontal state. The waterproof sheet on the protective cover of the water injection power tool is also inclined, so it will contact the workpiece, which will hinder the processing operation
In addition, the water poured into the processing part will flow down the waterproof sheet and fall on the workers

Method used

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  • Water-proof sheet and water injection electric tool provided with same
  • Water-proof sheet and water injection electric tool provided with same
  • Water-proof sheet and water injection electric tool provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] Refer below Figure 1~Figure 4 Embodiment 1 of the present invention will be described. figure 1 The shown water injection grinder 1 has a main body shell 10 , a transmission mechanism shell 20 , a protective cover 30 , a water injection mechanism, and a waterproof sheet 50 . In addition, this water injection grinder 1 is an example of the water injection electric tool in this invention.

[0052] The main body case 10 is formed in a cylindrical shape and accommodates a motor 11 . The shaft 12 of the motor 11 is rotatably supported in the main body case 11 via a bearing 13 . A first bevel gear 14 is provided at the tip of the rotating shaft 12 . A power cord 15 for supplying power to the motor 11 and the like is connected to the rear end of the main body case 10 .

[0053] The transmission housing 20 is assembled in front of the main body 10 ( figure 1 middle left). The rotating shaft 12 protrudes from the main body shell 10 into the transmission mechanism shell 20...

Embodiment approach 2

[0069] Refer below Figure 5~Figure 7 Embodiment 2 of the present invention will be described. Here, the same structures as those in Embodiment 1 are denoted by the same symbols and their descriptions are omitted. exist Figure 5 On the shown water injection grinder 1, the rear end of the waterproof sheet 50A ( Figure 5 The right side in the middle) is fixed on the water supply pipe 42. Such as Figure 5~Figure 7 As shown, the waterproof sheet 50A has an engaging member insertion hole 55 and an engaging member 56 .

[0070] Such as Image 6 As shown, the engaging piece insertion hole 55 is located at the rear end of the waterproof sheet 50A ( Image 6 middle and right side), and installed in the approximate center of the left and right width direction X. The engaging part 56 is a plastic product, such as Figure 7 As shown, the engaging member 56 has a rod portion 56A and a water supply pipe holding portion 56B. A circumferential groove 56C is formed in the circumfer...

Embodiment approach 3

[0075] Refer below Figure 8~Figure 12 Embodiment 3 of the present invention will be described. Here, the same configurations as those in Embodiments 1 and 2 are given the same reference numerals and their descriptions are omitted. Such as Figure 8 and Figure 9 As shown, the front of the main body shell 10 is assembled to cover the transmission mechanism shell 20 (refer to figure 1 ) of the transmission mechanism shield 60 on the outer surface. A pair of screw holes 61 (refer to Figure 9 ). Additionally, if Figure 12 As shown, a slide switch 16 is provided on the side surface of the front portion of the main body case 10 , and the slide switch 16 is used to switch the driving switch of the motor 11 . In addition, a plurality of intake ports 62 are formed on the left and right side surfaces of the rear portion of the main body case 10 . With the drive of the motor 11, it is fixed on the rotating shaft 12 (refer to figure 1 ) rotates, and the air is sucked into the ...

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PUM

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Abstract

The invention provides a water-proof sheet which can not influence the operation and can prevent the water from contacting with an operator, and a water injection electric tool provided with the water-proof sheet. The water-proof sheet is made of elastic material and is used for the water injection electric tool (1). The water injection electric tool is provided with a main shaft (21) which extends to the lower part of a housing (20). The main shaft is provided with a disc tool (26). The water injection electric tool is also provided with a protective cover (30) which at least covers the half rear part of the disc tool. The upper end of the protective cover is provided with a cylinder (31) which is arranged on the lower end of the housing. The water injection electric tool also includes a water injection mechanism which injects water to the inside of the protective cover. The front end of the water-proof sheet is provided with an installation part which is arranged on one side of the housing and can be disassembled. In the overlooking state, length of the water-proof sheet enables the water-proof sheet extend backward to a position which is behind the protective cover when the installation part is arranged on the side of the housing.

Description

technical field [0001] The invention relates to a waterproof sheet of a water-injection electric tool and a water-injection electric tool equipped with a waterproof sheet. The water-injection electric tool has a disc-shaped tool and a protective cover covering the disc-shaped tool. The inside of the protective cover is filled with water. Background technique [0002] For example, a kind of grinding machine for stripping paint is disclosed in Patent Document 1, a dust suction hood is installed on the grinding machine, a suction pipe socket is provided on the dust suction hood, and the dust suction hood is used to shield the paint during the stripping process. Dust generated during paint removal. In addition, the grinding machine also has a dust diffusion prevention rubber cover covering the periphery of the grinding tool, and the dust diffusion prevention rubber cover is fixed to the above-mentioned dust suction cover by rivets. The dust suction pipe of the electric vacuum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B27/033B24B55/00B24B55/02B24B55/06
Inventor 田伏贤一川上高弘
Owner MAKITA CORP