TW201420056A - Scraper with rearward-located center of gravity - Google Patents

Abstract

The present invention discloses a scraper with a rearward-located center of gravity including a main body and a blade. The main body includes a grip part and a working part. The grip part can allow a user to grip. The working part is formed with a front end and a rear end in a scraping direction of the scraper. A neck part is arranged between the grip part and the working part. A center axis is arranged on the main body in a direction perpendicular to a scraping surface of the scraper, and the center axis penetrates the grip part, the neck part and the working part. The grip part is formed with a first end and a second end in the scraping direction of the scraper. The first end of the grip part is close to the front end of the working part, and the second end of the grip part is close to the rear end of the working part. Due to design of the second end of the grip part exceeding the rear end of the working part, the center of gravity of the main body of the scraper is close to the rear end of the working part, such that the user can easily push the scraper to move forward smoothly, thereby improving efficiency of using the scraper to perform a scraping operation.

Description

Scraper with a center of gravity at the rear

The invention mainly discloses a scraper, especially a scraper whose center of gravity is located at the rear.

Please refer to the "PLANAR SURFACE SCRAPER" patent of US Pat. No. 5,435,064, which is a planar scraper. The scraper 10 includes a body 12 with a handle 14 above the blade. The forward end 22 of the cutter body has a scraper blade 16 between the head end and the rear end end of the cutter body, and the user can hold the handle to move the scraper blade When the scraper is pushed forward, the scraping blade is pushed to the object that is dirty and the paint is waiting to be scraped, and the object to be scraped is scraped off from the scraping surface to achieve the effect of cleaning and smoothing the scraping surface.

However, the conventional scraper is located between the head end and the trailing end of the blade body because the handle of the scraper is very close to the scraper blade when the user holds the handle, and the user uses the scraper blade to scrape the dirt when the user pushes the scraper forward. When the scraper blade hits the sticky dirt, the scraper will suddenly stop, and the user's hand will still push forward inertia, which will raise the tail end of the scraper, and the angle of the scraper blade and the scraping surface of the scraper After the change, the effect of the scraping will not continue to be produced, which will make the work efficiency of the scraper poor.

In view of the above-mentioned lack of the conventional structure, the inventors have invented a scraper having a center of gravity at the rear, which overcomes all the shortcomings of the above-mentioned conventional structure. point.

The main purpose of the scraper with the center of gravity of the present invention is to provide a design in which the second end of the grip portion is beyond the rear end of the working portion, so that the center of gravity of the scraper body is close to the rear end of the working portion, and the user's hand is pressed against the working portion. The rear end, when the scraper is blocked by the shaving operation, the user can still smoothly push the scraper forward, and the angle of the scraper blade relative to the scraping surface is kept constant, which helps to improve the execution efficiency when the scraper is used for the shaving operation, and The scraper can be used for smooth operation of the user, and has the effect of protecting the user from work injury.

Other objects, advantages and novel features of the invention will become apparent from the description and appended claims.

The technology, the means and the functions of the present invention are described in detail with reference to the accompanying drawings.

Referring to Figures 1 to 3, a perspective view, an exploded perspective view and a cross-sectional view of a first embodiment of a doctor blade having a center of gravity at the rear of the present invention are shown. The scraper 10 of the present invention comprises a body 20 and a blade 30. The body 20 includes a grip portion 21 and a working portion 22, which can be gripped by a user to operate the scraper 10 for planing. Scratching action. The working portion 22 is formed with a bottom surface 221 contacting the shaving surface and a The top surface 222 of the bottom surface 221 is opposite to the top surface 222 of the working portion 22, and the working portion 22 is formed with a front end 223 and a rear end 224 along the shaving direction of the scraper 10. The scraper 10 has an intermediate boundary 225 between the front end 223 and the rear end 224 of the working portion 22, the intermediate boundary 225 being perpendicular to the shaving surface of the scraper 10, the distance from the intermediate boundary 225 to the front end 223 being equal to the middle The distance from the boundary 225 to the rear end 224, the working portion 22 forms a first interval 226 between the intermediate boundary 225 and the rear end 224, and the working portion 22 forms a gap between the intermediate boundary 225 and the front end 223. Second interval 227. The working portion 22 has a recess 23 recessed in the bottom surface 221 . The recess 23 has an elongated shape. The top surface 222 of the working portion 22 is adjacent to the front end 223 and defines a through hole 24 . The through hole 24 extends through the working portion 22 . The bottom surface 221 and the top surface 222 communicate with the top surface 222 and the recess 23 of the bottom surface 221 .

The through hole 24 includes a connecting portion 241 and a receiving portion 242. The connecting portion 241 has a circular hole shape. The connecting portion 241 is adjacent to a side of the bottom surface 221, and the receiving portion 242 has a hexagonal hole shape. Segment 242 is adjacent to one side of top surface 222. The working portion 22 is provided with a fixing device 25 near the front end 223. The fixing device 25 includes a fixing member 251, a connecting member 252 and a positioning member 253. The fixing member 251 is provided with a positioning hole 254. The connecting member 252 sequentially passes through the connecting portion 254 of the positioning hole 254 and the through hole 24, and the fixing member 251 is fixed in the groove 23. The positioning member 253 is received in the receiving portion 242 of the through hole 24, and the connecting member 252 is connected to the positioning member 253 to achieve the effect of fixing the fixing member 251. The groove 23, the through hole 24 and the fixing device 25 Located in the second interval 227.

The bottom surface 221 of the working portion 22 is formed with a sliding portion 26 adjacent to the rear end 224, and the sliding portion 26 can abut against the shaving surface of the scraper 10. A neck portion 27 is disposed between the grip portion 21 and the working portion 22, and the two ends of the neck portion 27 are connected to the grip portion 21 and the working portion 22, respectively. The center of the neck portion 27 and the center of the grip portion 21 are located on a side of the intermediate boundary line 225 near the rear end 224. The center of the neck portion 27 and the center of the grip portion 21 are located in the first interval 226. . The body 20 has a central axis L extending in the vertical direction of the scraping surface of the scraper 10, and the central axis L extends through the grip portion 21, the neck portion 27, and the working portion 22.

The first end 211 and a second end 212 opposite to the first end 211 are formed along the scraping direction of the scraper 10, and the first end 211 of the grip 21 is adjacent to the working portion 22 The front end 223, the second end 212 of the grip portion 21 is adjacent to the rear end 224 of the working portion 22, and the distance from the second end 212 of the grip portion 21 to the central axis L forms a first distance D1, the working portion 22 The distance from the rear end 224 to the central axis L forms a second distance D2. The second distance D2 is smaller than the first distance D1, so that the second end 212 of the grip portion 21 protrudes from the first interval 226.

The blade 30 is disposed on a side of the blade 10 from the intermediate boundary 225 to the front end 223. The blade 30 is located in the second section 227. The blade 30 is disposed in the recess 23 of the working portion 22 through the fixing device 25. The blade 30 is provided with a through hole 31. The connecting member 252 sequentially passes through the positioning hole 254, the connecting portion 241 of the through hole 31 and the through hole 24, and the blade 30 and the fixing member 251 are fixed thereto. In the groove 23, the positioning member 253 is accommodated In the receiving section 242 of the through hole 24, the connecting member 252 is connected to the positioning member 253 to fix the fixing member 251 and the blade 30. The blade 30 is located between the working portion 22 and the fixing member 251.

Please refer to FIG. 4 and FIG. 5, which are schematic diagrams showing the operation of the first embodiment of the doctor blade whose center of gravity is located at the rear. The user can hold the grip portion 21 to operate the scraper blade 10 to move back and forth along the front and rear ends to achieve the effect of scraping off paint or dirt, because the slip portion 26 and the blade 30 can simultaneously abut the blade. The planing surface of the scraper 10 allows the scraper blade 10 to maintain the smoothing motion at a fixed angle.

Please refer to FIG. 6 to FIG. 10 , which are schematic perspective views, perspective views, cross-sectional views and operation diagrams of a second embodiment of the doctor blade with the center of gravity at the rear. The difference between the second embodiment and the first embodiment is only that the body 20 of the second embodiment is further provided with a grip 28 in the left and right directions, and the grip 28 has a round shape, and the user can The both ends of the grip bar 28 are respectively gripped by both hands, and the scraper 10 is operated to reciprocate the front and rear ends to achieve the effect of shaving.

The body 20 is further disposed with a hole 29 in the left and right directions. The hole 29 extends through the left and right sides of the body 20, and the hole 29 has a circular hole shape. The holding rod 28 is disposed in the hole 29 The at least one latching slot 291 is provided with two latching slots 291, and the at least one latching slot 291 is two in the embodiment. The gripping bar 28 is provided with at least one flange 281, at least One flange 281 is two in the embodiment, and the flange 281 is disposed in the latching groove 291 to prevent the grip 28 from pivoting relative to the body 20, thereby providing safety for the user to operate the scraper 10. Sex.

When the user operates the scraper 10 with both hands, the stability of the scraper 10 during operation can be increased, and the shaved surface is subjected to an average force, and the shaved surface after shaving is smooth. And when using both hands, the force is large, and the work can be completed quickly, saving time.

Referring to FIG. 11 to FIG. 13 , a perspective view, an exploded perspective view and a cross-sectional view of a third embodiment of the scraper with the center of gravity at the rear of the present invention are shown. The difference between the third embodiment and the first embodiment is that the sliding portion 26 of the third embodiment is further provided with a rotating shaft 261, and the rotating shaft 261 is disposed on the working portion 22 along the left and right sides. The rotating shaft 261 is sleeved with a roller 262, and the roller 262 is rotatable relative to the sliding portion 26.

The roller 262 and the blade 30 can simultaneously abut against the shaving surface of the scraper 10, so that the scraper 10 can maintain a smooth angle of smoothing, and the roller 262 is rolled forward on the shaving surface or Retreating can effectively reduce the resistance of the user to operate the blade 10.

As far as the above is concerned, it can be concluded that the present invention has the following advantages:

1. The scraper with the center of gravity of the present invention at the rear, wherein the second end of the grip portion exceeds the design of the rear end of the working portion, so that the center of gravity of the scraper body is close to the rear end of the working portion, and the user's hand is pressed against the rear end of the working portion. When the scraper is blocked by the shaving operation, the user can smoothly push the scraper forward, and the angle of the scraper blade relative to the scraping surface is kept constant, which helps to improve the execution efficiency when using the scraper for the shaving operation, and the scraper can For the user's smooth operation, it also has the effect of protecting the user from work injury.

2. The scraper of the present invention with the center of gravity at the rear, wherein the body of the scraper is provided with left and right lateral grips, which can be held by the user to operate the scraper. Working with both hands, the force applied by both hands ensures that the scraper is evenly averaged during the work, the scraper can perform the work smoothly, which helps to improve work efficiency, and the force required for the scraper to perform the shaving operation is doubled by the user. The average hand sharing allows the user to perform long-term work, and can also prevent the user from being injured due to excessive hand force.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

10‧‧‧Scraper

20‧‧‧ body

21‧‧‧ grip

211‧‧‧ first end

212‧‧‧ second end

22‧‧‧Working Department

221‧‧‧ bottom

222‧‧‧ top surface

223‧‧‧ front end

224‧‧‧ Backend

225‧‧‧Middle boundary

226‧‧‧First interval

227‧‧‧Second interval

23‧‧‧ Groove

24‧‧‧Perforation

241‧‧‧Connection section

242‧‧‧ 容

25‧‧‧Fixed devices

251‧‧‧Fixed parts

252‧‧‧Connecting parts

253‧‧‧ Positioning parts

254‧‧‧Positioning holes

26‧‧‧Slide

261‧‧‧ shaft

262‧‧‧Roller

27‧‧‧ neck

28‧‧‧ Grip

281‧‧‧Flange

29‧‧‧ Holes

291‧‧‧ card slot

30‧‧‧blade

31‧‧‧through hole

D1‧‧‧First distance

D2‧‧‧Second distance

L‧‧‧ central axis

Figure 1 is a perspective view of the first embodiment of the doctor blade with the center of gravity at the rear of the present invention.

Figure 2 is a perspective exploded view of the first embodiment of the doctor blade with the center of gravity at the rear of the present invention.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1 of the present invention.

Figure 4 is a schematic view showing the operation of the first embodiment of the doctor blade whose center of gravity is located at the rear.

Figure 5 is a schematic view showing the operation of the first embodiment of the scraper with the center of gravity of the present invention at the rear.

Figure 6 is a perspective view of a second embodiment of the doctor blade with the center of gravity at the rear of the present invention.

Figure 7 is an exploded view of the grip of the second embodiment of the scraper with the center of gravity of the present invention at the rear.

Figure 8 is a cross-sectional view of the present invention taken along line 8-8 of Figure 6.

Figure 9 is a cross-sectional view of the present invention taken along line 9-9 of Figure 6.

Figure 10 is a schematic view showing the operation of the second embodiment of the doctor blade whose center of gravity is located at the rear.

Figure 11 is a perspective view of a third embodiment of the doctor blade with the center of gravity at the rear of the present invention.

Figure 12 is an exploded view of the grip of the third embodiment of the scraper with the center of gravity of the present invention at the rear.

Figure 13 is a cross-sectional view of the present invention taken along line 13-13 of Figure 11.

10‧‧‧Scraper

20‧‧‧ body

21‧‧‧ grip

211‧‧‧ first end

22‧‧‧Working Department

222‧‧‧ top surface

223‧‧‧ front end

242‧‧‧ 容

251‧‧‧Fixed parts

252‧‧‧Connecting parts

253‧‧‧ Positioning parts

27‧‧‧ neck

30‧‧‧blade

Claims (10)

A scraper having a center of gravity at the rear includes: a body including a grip portion and a working portion, the grip portion being receivable for a user, the working portion being formed with a top surface, the grip The portion is connected to the top surface of the working portion, the working portion is formed with a front end and a rear end, and the scraper has a middle boundary line between the front end and the rear end of the working portion, the distance from the middle boundary line to the front end is equal to the a distance from the middle boundary line to the rear end, the center of the grip portion is located at a side of the scraper from the intermediate boundary line to the rear end; a blade, the blade is disposed at the working portion, and the two ends of the blade edge are respectively located at the scraper On the left and right sides, the blade is located on the side of the blade from the intermediate line to the front end. The scraper according to claim 1, wherein the working portion forms a first interval between the intermediate boundary and the rear end, and the center of the grip portion is located in the first interval. The scraper according to claim 2, wherein the body has a central axis along a vertical direction of the scraper surface, the central shaft extending through the grip portion and the working portion, the grip portion along the scraper The shaving direction is formed with a first end and a second end opposite to the first end, the first end of the grip portion is adjacent to the front end of the working portion, and the second end of the grip portion is adjacent to the working portion The rear end, the distance from the second end of the grip portion to the central axis forms a first distance, and the distance from the rear end of the working portion to the central axis forms a second distance, and the second distance is smaller than the first distance. a scraper with a center of gravity at the rear as described in claim 3, wherein the work The working portion is formed with a bottom surface contacting the shaving surface, and a bottom surface of the working portion is formed with a sliding portion near the rear end, and the sliding portion can abut against the shaving surface of the scraping blade. The scraper according to claim 4, wherein the sliding portion is further provided with a rotating shaft, and the rotating shaft is disposed on the working portion along the left and right sides, and the rotating shaft sleeve is provided with a roller. The scraper according to claim 4, wherein the grip portion and the working portion are provided with a neck portion, and the two ends of the neck portion respectively connect the grip portion and the working portion, the central shaft Also running through the neck, the center of the neck is located in the second interval. The scraper according to any one of claims 4 to 6, wherein the working portion has a groove recessed in the bottom surface, and a top surface of the working portion is provided with a through hole near the front end, the through hole penetrating the hole The bottom surface and the top surface of the working portion, the through hole communicates with the groove of the top surface and the bottom surface, the through hole includes a connecting portion and a receiving portion, the connecting portion is adjacent to a side of the bottom surface, and the receiving portion is adjacent to the bottom portion One side of the top surface, the working portion is provided with a fixing device near the front end, the fixing device comprises a fixing member, a connecting member and a positioning member, and the fixing member is provided with a positioning hole through which the blade is fixed. The device is disposed in the recess of the working portion, the blade is provided with a through hole, and the connecting member sequentially passes through the positioning hole, the connecting portion of the through hole and the through hole, and the blade and the fixing member are fixed to In the groove, the positioning member is received in the receiving portion of the perforation, the connecting member is connected to the positioning member, and the working portion forms a second interval between the intermediate boundary line and the front end, the groove, The perforation and the fixing device In the second section. The scraper according to claim 7, wherein the center of gravity is located at the rear, wherein the body is further provided with a grip bar along the left and right sides. The scraper according to claim 8, wherein the body is further provided with a hole in the direction of the left and right sides, and the hole passes through the left and right sides of the body, and the hole is in the shape of a hole, and the rod is worn. The slot is provided with a latching slot in the recess, and the grip is provided with a flange, and the flange is disposed in the latching slot. The scraper according to claim 9, wherein the groove has a long strip shape, the connecting portion has a circular hole shape, the receiving portion has a hexagonal hole shape, and the grip rod has a round rod shape.