TWM525374U - Scraper with auxiliary caster - Google Patents

Description

Scraper with auxiliary wheel (1)

The present invention relates to a scraper with an auxiliary wheel, in particular to an auxiliary wheel that contacts the surface to be scraped with three points that are not collinear, and assists in moving and guiding, and the scraper body and the surface to be scraped are processed in the process. The scraper is fixed at an angle, and the scraping force of the scraping edge is fixed.

It is conventional to apply a scraper or a blade to scrape a paint coating such as a line shape or to smooth a paint coating, and the blade or the blade is scraped. The edges can be provided with a zigzag or wavy pattern to scrape different lines of the paint coating.

However, the conventional method can not guarantee that during the scratching process, the fixed force is maintained, and the lines scraped out may have different depths, so the scraping operation is difficult. In addition, if a straight line is to be scraped, the squeegee or the squeegee can be operated by hand, and it is difficult to scrape a straight straight line.

At present, there is a new patent publication No. M418149 of the Republic of China on the "scraper auxiliary wheel structure". The former case is provided with a pulley in the short side groove of the scraper body, and the sliding resists the styroic plate to make the scraper body When the scraping part is leveled in the operation of the tile, there is no need to worry about the excessive force applied to scrape the styroic plate when the scraper body is leveled.

Although the above-mentioned previous case discloses that the flattening operation is carried out by the guide of the pulley, however, although the line applied to the paint coating can assist in scraping the straight line, the pressure under the scraper body is still not fixed by the human hand. There is no guarantee that the lines that are scraped will have a consistent depth.

In order to improve the above-mentioned deficiencies and deficiencies, the creator is committed to research and proposes the scraper of the auxiliary wheel of this creation, including:

a scraper body having a plate portion, one edge of the plate portion is provided with a scraping edge; and an auxiliary wheel device, comprising a support member, a first wheel member and two second wheel members, the second wheel member Connecting the front and rear sides with a connecting member, the supporting member is connected to the scraper body at one end, and the other end is connected to the first wheel member and the connecting member, and the first wheel member and the second wheel member are connected It can touch a plane at three points that are not collinear. The first wheel member and the second portion are borrowed when the scraper body is moved by the first wheel member and the second wheel member, and the scraping edge is scraped against a to-be-scraped surface. The wheel members jointly touch the surface to be scraped, and the force of the scraping edge against the surface to be scraped remains fixed.

Further, at least one of the second wheel members is provided with a first guiding unit, the first guiding unit is provided with a first guiding portion, and the guiding direction defined by the first guiding portion does not overlap with the scraping edge, The squeegee with the auxiliary wheel further includes a second guiding unit, and the second guiding unit is provided with a second guiding portion, and the second guiding portion correspondingly cooperates with the first guiding portion.

Further, the first wheel member is provided with a first guiding unit, the first guiding unit is provided with a first guiding portion, and the guiding direction defined by the first guiding portion does not overlap with the scraping edge, and The squeegee of the auxiliary wheel further includes a second guiding unit, and the second guiding unit is provided with a second guiding portion, and the second guiding portion correspondingly cooperates with the first guiding portion.

Further, at least one of the second wheel members is provided with a ring portion protruding away from a side surface of the first wheel member to form the first guiding unit, and a circumferential guiding surface of the ring step portion is provided with a guiding ring a groove for forming the first guiding portion, the second guiding unit being a guiding strip, the guiding strip being provided with a guiding flange to form the second guiding portion.

Further, the squeegee with the auxiliary wheel further includes a guiding strip having a side stop surface, and at least one of the second wheel members has a side plane, and the side plane abuts the side damper surface, The squeegee body is moved by the guiding of the guiding strip.

Further, the number of the support members is two, the two support members and the connecting member are in the shape of a long strip, the two support members are parallel and opposite, and each end is connected to the two ends of the scraper body by one end, and each The first wheel member and the connecting member are connected by the other end.

Further, the connection angle of the support member and the connecting member can be adjusted.

Further, the support member and the connecting member are detachably locked to each other by bolts.

Further, the connection angle of the support member to the squeegee body can be adjusted.

Further, the support member is connected to the squeegee body through an adapter, and the support member and the adapter member are detachably locked to each other by bolts.

Further, the squeegee body is provided with a grip portion connected to the plate portion, and the plate portion is elastically bendable by applying an external force.

Further, the squeegee body includes an auxiliary plate portion and the plate portion are juxtaposed and connected to the grip portion, and the auxiliary plate portion has an end edge parallel to the scraping edge to be pressed when the plate portion is bent at a specific angle On the board.

The scraper of the auxiliary wheel of this creation may also include:

a squeegee body having a plate portion, one edge of the plate portion is provided with a scraping edge; and an auxiliary wheel device, three support members and three wheel members are respectively connected to the three support members, and the three support members are respectively connected to the scraping The plate body, and the three wheel members can contact a plane at three points that are not collinear. By the way, when the scraper body is moved by the three-wheel member, and the scraping edge is scraped against a to-be-scraped surface, the three-wheeled member is commonly touched against the to-be-scraped surface, and the scraping edge is offset. The force to scrape the surface to be scraped remains fixed.

The scraper of the auxiliary wheel of this creation may also include:

a scraper body having a plate portion, one edge of the plate portion is provided with a scraping edge; and an auxiliary wheel member having two support members and two wheel members respectively connected to the two support members, at least one of the wheel members being cylindrical And the two supporting members are respectively connected to the squeegee body, and the two wheel members can contact a plane with one line and one point of the collinear line. By the way, when the scraper body is moved by the two-wheel member, and the scraping edge is scraped against a surface to be scraped, the two-wheeled member is commonly touched against the surface to be scraped, and the scraping edge is brought into contact with The force to scrape the surface to be scraped remains fixed.

According to the above technical features, the following effects can be achieved:

1. During the scraping process, the scraper body is in contact with the surface to be scraped by the first wheel member and the second wheel member at three points that are not collinear, or is not collinear by the three-wheel member. The squeegee body and the to-be-scraped surface can be made to be in contact with the surface to be scraped by the two-point member, and at least one of the two-wheel members is cylindrical, and the line to be scraped is contacted with a line and a point that are not collinear. The angle is fixed, so that the force of the scraping edge scraping against the surface to be scraped is fixed, and it is convenient to scrape the lines with the same depth and shallowness, so as to avoid the situation that the force is uncertain when only the human hand is operated.

2. Adjusting the connection angle of the support member to the scraper body, or adjusting the connection angle of the support member and the connecting member, the angle between the scraper body and the surface to be scraped can be changed, and the scraping edge scraping can be changed. Respond to the force to be scraped.

3. The first guiding unit is arranged on the wheel member, and moves with the guiding of the second guiding unit to facilitate the scraping of a very straight line.

4. A guiding strip can be directly used, and the side plane of the wheel member is pressed against the guiding strip, which also has guiding effect and is simpler in operation.

5. During the scraping process, the auxiliary plate portion is adjacent to the scraping edge, and applies a force to the curved plate portion, so that each portion of the scraping edge has an average force on the surface to be scraped, so that the scraping is performed. The lines are more consistent.

6. The plate portion disposed on the grip portion is replaced with other plate portions having different scraping edge patterns, and different line patterns can be scraped to improve the convenience of the work.

The effectiveness of the squeegee of the auxiliary wheel of the present invention will be clearly shown in the following examples.

Referring to the first and second figures, the scraper with the auxiliary wheel of the first embodiment of the present invention comprises a scraper body (1) and an auxiliary wheel (2), wherein the scraper body ( 1) A plate portion (11), a grip portion (12) and an auxiliary plate portion (13) are provided, and the plate portion (11) is juxtaposed with the auxiliary plate portion (13) and connected to the grip portion ( 12) The plate portion (11) is a material that is elastically bendable and elastically bends when an external force is applied. Further, one edge of the plate portion (11) is provided with a scraping edge (111) which is arranged in a pattern such as a zigzag shape or a wave shape in accordance with the requirement of the scraping pattern. The auxiliary plate portion (13) is provided with an end edge (131) parallel to the scraping edge (111). When the plate portion (11) is bent at a specific angle, the auxiliary plate portion (13) is at the end edge (131). Applying force to the top of the plate portion (11).

Referring also to the first and second figures, the auxiliary wheel (2) is provided with two support members (21), a first wheel member (22) and two second wheel members (23), the second and second The wheel members (23) are arranged one behind the other and connected to each other by a connecting member (24). The two supporting members (21) are elongated with the connecting member (24), and the two supporting members (21) are connected by two adapters. (B) respectively connected to the two ends of the squeegee body (1) such that the two support members (21) are parallel to each other, and the adapter member (B) is L-shaped, but not limited thereto; Two support members (21) are respectively connected to the first wheel member (22) and the connecting member (24), and the first wheel member (22) and the second second wheel member (23) can be non-collinear The three points touch a plane.

Referring to the first and second figures, the connection between the two supporting members (21) and the two adapters (B) is interlocked by bolts (A1), but not limited thereto. The connection angle between the two support members (21) and the squeegee body (1) can be adjusted and fixed. The connection between the support member (21) and the connecting member (24) is interlocked with the bolt (A2), but not limited thereto, so that one of the support members (21) and the connecting member The connection angle of (24) can be adjusted and fixed.

Referring to the second and third figures, the scraper with the auxiliary wheel of the first embodiment is supported and guided by the first wheel member (22) and the second wheel member (23). Moving the squeegee body (1), thereby scraping a surface to be scraped (C), scraping a line pattern, and the surface to be scraped (C) is, for example, a paint coating . In use, the connection angle between the two support members (21) and the squeegee body (1) is first adjusted, so that the first wheel member (22) and the second second wheel member (23) simultaneously touch the portion to be scraped When the surface (C) is used, the scraping edge (111) can be parallel to the surface to be scraped (C), or can be completely flattened to the surface to be scraped (C), without any one of the ends being raised, and then The bolt (A1) is locked.

Referring to the fourth and fifth figures, the connection angle of one of the support members (21) and the connecting member (24) is adjusted and locked by the bolt (A2). As shown in the fourth figure, the connection angle between the support member (21) and the connecting member (24) is adjusted and fixed, and placed on the to-be-scraped surface (C), and one of the aforementioned second wheel members (22) Lifting relative to the surface to be scraped (C). In the fifth figure, the user grasps the grip portion (12) to apply a pressing force, so that the first wheel member (22) and the second wheel member (23) can jointly touch the to-be-scratched portion. Face (C), at this time, the scraping edge (111) penetrates the surface to be scraped (C), and the user moves by moving the first wheel member (22) and the second wheel member (23) The squeegee body (1) causes the scraping edge (111) to scrape the surface to be scraped (C). During the scraping process, the first wheel member (22) and the second wheel member (23) are offset from the to-be-scraped surface (C) by three points that are not collinear, so that the scraper body (1) The angle with the surface to be scraped (C) is fixed, so that the scraping edge (111) scrapes against the force of the surface to be scraped (C), so that the lines with the same depth can be scraped, and there is no manual operation. The problem of uncertainty.

Referring also to the fourth and fifth figures, when it is desired to change the scraping force to scrape another deep and shallow line, it is only necessary to adjust the connection angle of the one support member (21) with the connecting member (24). And locking with the bolt (A2), the angle of the scraper body (1) and the surface to be scraped (C) is changed, and the force of the scraping edge (111) scraping against the surface to be scraped (C) also changes. It can scrape another line of deep and shallow consistency.

Referring also to the fourth and fifth figures, when scraping, the plate portion (11) is bent at a specific angle, and the auxiliary plate portion (13) is pressed against the plate portion (11) by the end edge (131). The top force is applied to the scraping edge (111), and the end edge (131) of the biasing force is parallel to the scraping edge (111), so that the scraping edge (111) is to be scraped (C) has an average scraping force, which makes the scraped lines more consistent. In addition, the plate portion (11) may be detachably disposed on the grip portion (12), so that different line patterns can be scraped off by replacing other plate portions having different scraping edge patterns, thereby enhancing The convenience of homework.

Referring to the sixth and seventh figures, the squeegee with the auxiliary wheel of the second embodiment of the present invention is substantially the same as the structure of the first embodiment, and the same reference numerals are used below. In the squeegee with the auxiliary wheel of the second embodiment, the second wheel member (23) is provided with a first guiding unit (231), and the first guiding unit (231) is provided with a first guiding portion. (230), the first guiding portion (230) defines a guiding direction that does not overlap the scraping edge (111). The squeegee with the auxiliary wheel of the second embodiment further includes a second guiding unit (3), and the second guiding unit (3) is provided with a second guiding portion (31), the second guiding The portion (31) correspondingly cooperates with the first guiding portion (230). The second wheel member (23) of the second embodiment is provided with a ring step portion away from a side surface of the first wheel member (22) to form the first guiding unit (231). The circumferential surface of the ring step portion is provided with a guide ring groove to form the first guiding portion (230). Further, the second guiding unit (3) of the second embodiment is a guiding strip, and the guiding strip (3) is provided with a guiding flange to form the second guiding portion (31). By this, the first guiding portion (230) and the second guiding portion (31) are cooperatively guided to move the squeegee body (1), and a very straight line can be scraped off. However, the first guiding unit (231) and the first guiding portion (230) of the present invention may be disposed only on one of the second wheel members (23) or disposed on the first wheel member. (22), the same can be achieved. Or, in the present creation, the first guiding portion (230) of the first guiding unit (231) and the second guiding portion (31) of the second guiding unit (3) are not limited The guiding ring groove of the ring portion and the guiding flange of the guiding strip can also be configured by other forms such as the rim of the guiding wheel and the wheel groove of the guiding strip, and the same can be achieved. Guidance effect.

Referring to the eighth embodiment, a partial cross-sectional schematic view of a squeegee with an auxiliary wheel according to a third embodiment of the present invention is used to illustrate a relatively simple structure, and the guiding effect can also be achieved. The third embodiment differs from the first embodiment in that the squeegee with the auxiliary wheel further comprises a guiding strip (3a) having a side stop surface (31a) and at least one The second wheel member (23a) has a side plane (231a). When the squeegee body (1a) is moved, the side plane (231a) is abutted against the side damper surface (31a). The squeegee body (1a) serves as a guide to scrape a very straight line, and is simpler in structure and more convenient in operation than the second embodiment.

Referring to the ninth and tenth drawings, the actual use of the squeegee with the auxiliary wheel of the second embodiment will be described. Wherein, the ninth figure illustrates that the horizontal guiding line is scraped laterally from left to right by the guiding of the second guiding unit (3), and each horizontal shaving is performed from top to bottom, and The ten figure shows that by the guiding of the second guiding unit (3), the vertical straight lines are scraped longitudinally from top to bottom, and each longitudinal shaving is performed from right to left. In addition, the paint coating to be scraped generally has a certain viscosity, and the wheel marks generated by the rolling of the first wheel member (22) and the second wheel member (23) are not obvious, and the wheel marks are scraped by the scraping. The edge (111) will disappear after scraping.

Referring to the eleventh figure, the scraper with the auxiliary wheel of the third embodiment of the present invention also has a scraper body (1b) and an auxiliary wheel (2b), but the auxiliary is compared with the foregoing embodiment. The configuration of the wheel (2b) is not the same. The auxiliary wheel (2b) of the third embodiment is provided with three support members (21b) each connected to the three-wheel member (22b), and the three support members (21b) are respectively connected to the scraper body (1b), and the three wheels are made The piece (22b) can contact a plane at three points that are not collinear. During the scraping process, the three-wheel member (22b) is fixed to the surface to be scraped by the three points of the non-collinear line, so that the angle of the scraper body (1b) and the surface to be scraped is fixed, so that the The scraping force of the scraping edge (111b) is fixed, so that the lines with the same depth and shallowness can be scraped, and there is no problem that the force of the manual operation is uncertain. In addition, when it is desired to change the scraping force, it is only necessary to adjust the connection angle of any one of the three supporting members (21b) with the scraper body (1b), and if it is locked by a bolt, the scraper body (1b) As the angle of the surface to be scraped changes, the scraping force of the scraping edge (111b) also changes, and another line of uniformity of shallowness can be scraped off.

Referring to Fig. 12, the scraper with the auxiliary wheel of the fourth embodiment of the present invention also has a scraper body (1c) and an auxiliary wheel (2c), but the auxiliary is compared with the foregoing embodiment. The configuration of the wheel (2c) is different. The auxiliary wheel (2c) of the fourth embodiment is provided with two supporting members (21c) respectively connected to the two wheel members (22c), the two wheel members (22c) are cylindrical, and the two supporting members (21c) are respectively connected The squeegee body (1c) enables the two-wheel member (22c) to contact a plane with two lines that are not collinear. During the wiping process, the two-wheel member (22c) is offset from the surface to be scraped by a line that is not collinear, so that the angle of the squeegee body (1c) and the surface to be scraped is fixed, so that The scraping force of the scraping edge (111c) is fixed, so that the lines of uniform depth can be scraped. In addition, when it is desired to change the scraping force, the angle of connection between any one of the two supporting members (21c) and the scraper body (1c) is adjusted, and the bolt body (1c) can be changed by, for example, bolting. The angle of the surface to be scraped, and the force of the scratching is changed. However, the two-wheel member (22c) may also have only one of the cylindrical shapes, and the two-wheel member (22c) can also achieve the above-mentioned effect by one line of the non-collinear line and one point of contact with a plane.

In view of the above description of the embodiments, the above-described embodiments are merely a preferred embodiment of the present invention, and the implementation of the present invention is not limited thereto. The scope, that is, the simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the creation of the creation, are within the scope of this creation.

(1), (1b), (1c)‧‧‧ scraper body
(11) ‧‧‧ Board Department
(111), (111b), (111c) ‧ ‧ s
(12)‧‧‧ Grip
(13) ‧‧‧Auxiliary Board
(131) ‧‧‧ edge
(2), (2b), (2c) ‧ ‧ auxiliary wheels
(21), (21b), (21c) ‧ ‧ support
(22) ‧‧‧First round
(23)‧‧‧Second round
(230) ‧‧‧First Guidance
(231)‧‧‧First guiding unit
(24)‧‧‧Connecting parts
(3) ‧‧‧Second guiding unit
(31) ‧‧‧Second guidance
(231a)‧‧‧Side plane
(3a)‧‧‧Guide bars
(31a) ‧‧‧ side stop
(22b), (22c) ‧ ‧ wheel
(A1), (A2) ‧‧‧ bolts
(B) ‧ ‧ Adapters
(C) ‧ ‧ to be shaved

[First figure] is an exploded view of the squeegee with the auxiliary wheel of the first embodiment of the present invention.

[Second Picture] is a schematic view showing the appearance of the squeegee with the auxiliary wheel of the first embodiment of the present invention.

[Third image] is the squeegee with the auxiliary wheel of the first embodiment of the present invention, by adjusting the connection angle between the two supporting members and the squeegee body, so that the squeegee edge is completely flat on the side of the surface to be scraped See the schematic.

[Fourth figure] is the squeegee with the auxiliary wheel of the first embodiment of the present invention, and the connection angle of one of the support members and the connecting member is adjusted and placed on the surface to be scraped, one of the second A side view of the wheel member with respect to the raised surface to be scraped.

[fifth figure] is a squeegee with an auxiliary wheel according to the first embodiment of the present invention, and the user holds the grip portion to apply a force to press down, so that the first wheel member and the second wheel member are jointly touched. In the side to be scraped and moved, the scraping edge penetrates into the surface to be scraped for scraping.

[Sixth] is a schematic diagram of the auxiliary wheel of the second embodiment, and further includes a second guiding unit corresponding to the first guiding unit of the second wheel.

[Seventh] is a schematic cross-sectional view of the squeegee with the auxiliary wheel according to the second embodiment of the present invention, wherein the first guiding portion and the second guiding portion cooperate with each other.

[Eighth image] is a partial cross-sectional schematic view of the side surface of the second wheel member with the side surface of the second wheel member.

[Ninth image] is a schematic view showing the use of the scraper with the auxiliary wheel in the second embodiment of the present invention.

[Tenth Graph] is a schematic view showing the use of the scraper with the auxiliary wheel in the second embodiment of the present invention.

[11th] is a schematic perspective view of the squeegee with the auxiliary wheel according to the fourth embodiment of the present invention.

[Twelfth Figure] is a schematic perspective view of the squeegee with the auxiliary wheel according to the fifth embodiment of the present invention.

(1)‧‧‧Scraper body

(11) ‧‧‧ Board Department

(111)‧‧‧Scratch

(12)‧‧‧ Grip

(13) ‧‧‧Auxiliary Board

(131) ‧‧‧ edge

(2) ‧‧‧Auxiliary wheel

(21) ‧‧‧Support

(22) ‧‧‧First round

(23)‧‧‧Second round

(24)‧‧‧Connecting parts

(A1), (A2) ‧‧‧ bolts

(B) ‧ ‧ Adapters

Claims (14)

A scraper with an auxiliary wheel, comprising: a scraper body having a plate portion, one edge of the plate portion is provided with a scraping edge; an auxiliary wheel device having a support member, a first wheel member and two second portions a wheel member, the two second wheel members are connected to each other by a connecting member, and the supporting member is connected to the squeegee body at one end, and the other end is connected to the first wheel member and the connecting member, and the first The wheel member and the second wheel member can contact a plane at three points that are not collinear; thereby, when the squeegee body is moved by the first wheel member and the second wheel member, and the blade is scraped When the edge is scraped on a surface to be scraped, the first wheel member and the second wheel member jointly touch the surface to be scraped, so that the force of the scraping edge against the surface to be scraped remains fixed. The squeegee of the auxiliary wheel according to the first aspect of the invention, wherein at least one of the second wheel members is provided with a first guiding unit, the first guiding unit is provided with a first guiding portion, the first guiding unit The guiding direction defined by the guiding portion does not overlap with the scraping edge, and the scraper with the auxiliary wheel further comprises a second guiding unit, and the second guiding unit is provided with a second guiding portion, the second The guiding portion correspondingly cooperates with the first guiding portion. The squeegee of the auxiliary wheel according to the first aspect of the invention, wherein the first wheel member is provided with a first guiding unit, and the first guiding unit is provided with a first guiding portion, the first guiding portion The guiding direction defined by the guiding portion does not overlap with the scraping edge, and the scraper with the auxiliary wheel further comprises a second guiding unit, and the second guiding unit is provided with a second guiding portion, the second guiding The portion cooperates with the first guiding portion. The squeegee of the auxiliary wheel according to the second or the third aspect of the invention, wherein at least one of the second wheel members is provided with a ring step portion away from a side of the first wheel member to form a ring portion. The first guiding unit is provided with a guiding ring groove on the circumferential surface of the ring step portion to form the first guiding portion, and the second guiding unit is a guiding strip, and the guiding strip is provided There is a guiding flange to form the second guiding portion. The squeegee of the auxiliary wheel according to the first aspect of the invention, wherein the squeegee of the auxiliary wheel further comprises a guiding strip, the guiding strip has a side stop surface, and at least one second wheel part There is a side plane, and the side surface is abutted against the side stop surface, so that the squeegee body is guided by the guiding strip to move. The squeegee of the auxiliary wheel according to claim 1, wherein the number of the support members is two, and the two support members and the connecting member are in the shape of a long strip, and the two support members are parallel and opposite. And each of them is connected to the two ends of the squeegee body by one end, and is connected to the first wheel member and the connecting member by the other end. The squeegee with the auxiliary wheel as described in claim 1, wherein the connection angle of the support member and the connecting member can be adjusted. The squeegee of the auxiliary wheel according to the seventh aspect of the invention, wherein the support member and the connecting member are detachably locked to each other by bolts. The squeegee with the auxiliary wheel as described in claim 1, wherein the connection angle of the support member to the squeegee body can be adjusted. The squeegee of the auxiliary wheel according to claim 9, wherein the support member is coupled to the squeegee body through an adapter, and the support member and the adapter member are detachably attached by bolts. Lock each other. The squeegee of the auxiliary wheel according to claim 1, wherein the squeegee body is provided with a grip portion connected to the plate portion, and the plate portion is elastically bendable by applying an external force. The squeegee with an auxiliary wheel according to claim 11, wherein the squeegee body includes an auxiliary plate portion juxtaposed with the plate portion and connected to the grip portion, the auxiliary plate portion having an end edge and The scraping edges are parallel to be pressed against the plate portion when the plate portion is bent at a specific angle. A scraper with an auxiliary wheel, comprising: a scraper body having a plate portion, one edge of the plate portion is provided with a scraping edge; an auxiliary wheel device, three supporting members and three wheel members are respectively connected to the three supporting members, The three support members are respectively connected to the squeegee body, and the three-wheel member can contact a plane at three points that are not collinear; thereby, when the squeegee body is moved by the three-wheel member, When the edge is scraped on a surface to be scraped, the three-wheel member is jointly touched to the surface to be scraped, and the force of the scraping edge against the surface to be scraped is maintained fixed. A scraper with an auxiliary wheel, comprising: a scraper body having a plate portion, one edge of the plate portion is provided with a scraping edge; an auxiliary wheel device, two supporting members and two wheel members are respectively connected to the two supporting members At least one of the wheel members has a cylindrical shape, and the two supporting members are respectively connected to the squeegee body, and the two wheel members can contact a plane with one line and one point of the collinear line; When the two wheel members are moved, and the scraping edge is scraped against a surface to be scraped, the two wheel members are jointly touched to the surface to be scraped, so that the force of the scraping edge against the scraping surface is maintained and fixed. .