TWM569666U - Power grinding device - Google Patents

Abstract

The present invention relates to a power grinding device, which comprises a body, a coupling seat and a driven module, wherein the body is provided with a driving portion, and the coupling seat is rotatably coupled with the body, the driven module The driving module is disposed in the coupling base and is driven by the driving portion. The driven module is provided with a tool fixing member, and the tool fixing member is swingably connected to the coupling seat at a middle portion. An angle is formed between the portion and the tool fixing member, which effectively reduces the overall length of the power grinding device, and allows the user to extend the power grinding device into a small space for grinding the surface of the workpiece.

Description

Power grinding device

The invention relates to a power grinding device, in particular to a power grinding device which can grind in a small space.

The grinding device is a device for grinding and polishing the surface of the work surface or the uneven portion of the edge through a tool such as a trowel or a grindstone. Referring to FIG. 11 , the prior art power grinder 80 has a grip portion 81 . a pivoting module 82 and a tool fixing member 83. The holding portion 81 is a part of the outer casing of the power polishing device 80. The clamping portion 81 has a cylindrical shape and has a longitudinal direction, and a driving module is disposed in the holding portion 81. The pivoting module 82 is fixedly coupled to the outer casing of the power grinding device 80, and a front end of the pivoting module 82 is provided with a scissor bolt 821, and the tool fixing member 83 is pivotally connected to the pivoting bolt 821. The module 82 is pivotally coupled to the same line as the grip portion 81. The tool holder 83 is coupled to the drive module and is fixedly coupled to a tool such as a trowel or a grindstone. When the module is actuated, the tool holder 83 is driven to swing relative to the scissors bolt 821, thereby grinding and polishing the workpiece through a tool such as a boring tool or a grindstone.

However, since the tool holder 83 extends along the length direction of the grip portion 81, the overall length of the power grinding device 80 is large, and when the user wants to polish and polish the surface in a small space, the existing power The grinding device 80 is difficult to extend into the narrow space, and the tool holder 83 is abutted against the surface for processing. Therefore, the existing power grinding device 80 cannot be used in a small space, and there is a limitation in its use, and therefore it needs to be improved.

In order to solve the limitation that the prior art power grinding device can not be used in a narrow space, the present invention provides a power grinding device that effectively reduces the overall length of the power grinding device by non-linearly connecting a driving portion and the tool fixing member. The user can extend the power grinding device into a small space to grind the surface of the workpiece, which is further described below.

The present invention is a power grinding device comprising a body, a coupling base and a driven module, wherein: the system is connected to a power source, and the body is provided with a driving portion, the driving portion includes a driving The coupling base is rotatably coupled to the body; and the driven module is disposed in the coupling base and connected to the body, the driven module is provided with a yoke member and a tool fixing member The yoke member is eccentrically connected to the driving shaft, and the tool fixing member is swingably connected to the coupling seat at a middle portion, and the two ends of the tool fixing member are respectively a pivot end and a joint end The pivoting end is pivotally connected to the deflecting member and forms an angle between the tool fixing member and the driving portion, and the engaging end protrudes from the coupling seat.

In the above-mentioned power grinding device, the coupling seat is provided with a mounting groove and an abutting member, one side of the mounting groove is radially recessed with a receiving groove, and the driving portion of the body extends into the mounting groove, the abutting The component is disposed in the accommodating groove, and is fixed to the driving portion by abutting against the driving portion.

Further, in the above power polishing apparatus, the body includes a connecting portion, one end of the connecting portion is connected to the power source, and the other end is obliquely connected to the driving portion.

Further, in the above-mentioned power grinding device, the driven module is provided with a driving block and a positioning member, the driving block is coaxially coupled with the driving shaft, and the eccentric member is eccentrically coupled with the driving block, The positioning member is fixedly coupled to the coupling seat, and the tool fixing member is pivotally connected to the positioning member.

In the above-mentioned power grinding device, the main body is provided with an extending portion, and the extending portion is connected to the driving portion, and the extending portion is provided with an interlocking shaft, and the connecting shaft is coaxially connected with the driving shaft, and the coupling seat is provided with a joint a mounting groove and an abutting member, wherein one side of the mounting groove is radially recessed with a receiving groove, and the extending portion of the body extends into the mounting groove, the abutting member is disposed in the receiving groove, and The extensions abut.

Further, in the above-mentioned power grinding device, the body is provided with a transmission portion, the transmission portion includes an upper coupling block and a lower coupling block, the upper coupling block is fixed to the driving shaft, and the lower coupling block is fixed to the linkage shaft, and The lower joint block engages the upper joint block.

Further, in the above-mentioned power grinding device, the driven module is provided with a driving block and a positioning member, the driving block is coaxially coupled with the linking shaft, and the eccentric member is eccentrically coupled with the driving block. The positioning member is fixedly coupled to the coupling seat, and the tool fixing member is pivotally connected to the positioning member.

Further, in the above-mentioned power grinding device, the two ends of the yoke are respectively a ball joint and a pivot joint, and the ball joint is eccentrically coupled to the driving block through a radial bearing, and the pivot end is The pivot end of the tool holder is pivotally connected.

Preferably, in the above-mentioned power grinding device, the positioning member and the tool fixing member are pivotally connected through a scissor bolt, and a thrust bearing is disposed between the positioning member and the tool fixing member.

According to the above technical features, the present invention effectively reduces the length of the entire power grinding device by forming an angle between the driving portion and the tool fixing member, thereby improving the difficulty of the existing power grinding device to extend into a deep or narrow workpiece. Disadvantages, the user can extend the power grinding device into a small space for grinding the surface of the workpiece, and further, the driving shaft can be connected to the extension portion, thereby extending into a deeper region, preferably through the coupling seat Rotatablely combined with the driving portion or the extending portion, the direction of the tool fixing member can be changed, and the applicability of the power grinding device in different narrow spaces is increased. Therefore, the present invention is in a narrow space compared to the existing power grinding device. It has a better use effect when performing a grinding operation, thereby providing a power grinding device that can perform grinding in a small space.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the detailed description of the preferred embodiment is further illustrated as follows:

The present invention is a power polishing apparatus. The first preferred embodiment is as shown in FIG. 1 to FIG. 4, and includes a body 10, a coupling base 20 and a driven module 30, wherein:

As shown in FIG. 1 , the body 10 includes a connecting portion 11 and a driving portion 12 . The connecting portion 11 is obliquely disposed and connected to an external power source (not shown). The driving portion 12 is connected. It is disposed vertically and combined with the connecting portion 11 to form an angle, and the inside of the driving portion 12 communicates with the inside of the connecting portion 11. Further, as shown in FIG. 2 and FIG. 3, the driving portion 12 has a driving a shaft 121 and an abutting ring 122. The driving shaft 121 is disposed at a central position inside the driving portion 12 and protrudes downwardly from a bottom edge of the driving portion 12. The abutting ring 122 is located at an outer periphery of the driving portion 12. The bottom side of the driving shaft 121 extends from the bottom of the abutting ring 122. In the preferred embodiment, when the body 10 is used, the power source connected to the connecting portion 11 can output gas power, thereby passing The connecting portion 11 and the inside of the driving portion 12 drive the drive shaft 121 to rotate.

As shown in FIG. 2 and FIG. 3 , the joint 20 is rotatably coupled to the body 10 , and the joint 20 is provided with a mounting groove 21 , a receiving cavity 22 and an abutting member 23 . The pedestal 21 is a circular groove that is recessed on the top surface of the pedestal 20, and is coupled to the driving portion 12, and one side of the mounting groove 21 is radially recessed with a receiving groove 211; the accommodating cavity 22 The accommodating cavity 22 is provided with a lateral opening 221, so that the mounting groove 21 and the accommodating cavity 22 together form an L-shaped internal space. In the preferred embodiment, the orientation of the opening 221 is the same as the direction of the receiving slot 211 relative to the mounting slot 21, that is, the opening 221 and the receiving slot 211 face in the same direction; the abutting member 23 The accommodating groove 211 is movably disposed in the accommodating groove 211. When the body 10 is coupled with the yoke 20, the abutting ring 122 of the driving portion 12 extends into the mounting groove 21, that is, a fastener is transmitted through the fastener. The 231 is radially rotated from the outer surface of the binding base 20 into the receiving groove 211 to push the abutting member 23 against the abutting ring 122. The main body 10 may be fixed to the binding housing 20, further, at this time, the drive shaft 121 extending downwardly into the receiving chamber 22.

As shown in FIG. 2 to FIG. 4 , the driven module 30 is disposed in the binding base 20 and connected to the body 10 . The driven module 30 is provided with a driving block 31 and a biasing member 32 . a locating member 33 and a tool holder 34 are disposed in the accommodating cavity 22 and coaxially coupled to the driving shaft 121 to be rotatable with the driving shaft 121; The splicing member 32 is coupled to the driving block 31. The yoke 32 includes a ball joint 321 and a pivoting portion 322. The ball joint 321 and the pivoting portion 322 are respectively disposed at two ends of the yoke 32. The ball joint 321 is coupled to the drive block 31 through a radial bearing 301. Further, since the ball joint 321 is not located on the central axis of the drive shaft 121, the ball joint 321 can be rotated at the drive block 31. At the same time, the drive shaft 121 is eccentrically rotated. Further, in the preferred embodiment, the yoke 32 is vertically located on the side close to the opening 221 as shown in FIG. 3 with respect to the drive shaft 121.

The positioning member 33 is disposed at a position close to the top side of the accommodating cavity 22, and is inserted through the outer surface of the coupling seat 20 through the two locking members 330 to extend into the accommodating cavity 22 and the positioning member 33. The positioning member 33 is disposed with a positioning hole 331 adjacent to the opening 221; the tool fixing member 34 is pivotally connected to the yoke 32 and the positioning member 33, and the middle portion of the tool positioning member 34 A through hole 343 is disposed through the through hole 343 through a scissors bolt 35, passes through a thrust bearing 302, and finally passes through the positioning hole 331 to be locked with a nut 351, thereby sequentially clamping the tool. The tool holder 34 includes a pivoting end 341 and a coupling end 342, and the pivoting end 341 and the coupling end 342 are respectively located on the tool holder 34. The two ends of the pivoting end 341 are located in the accommodating cavity 22, and are pivotally connected to the yoke 32 through a latch 340. The engaging end 342 extends out of the opening 221, and can be combined with a trowel or a grindstone. A combination of tools (not shown).

As shown in FIG. 3 and FIG. 5, when the driving block 31 is rotated to rotate the ball joint 321 by 180 degrees with respect to the driving shaft 121, since the pivoting portion 322 is pivotally connected to the tool fixing member 34, The tool holder 34 is restrained by the positioning member 33, so that the tool holder 34 cannot be extended and contracted. In the connection relationship of the radial bearing 301, the yoke 32 is oscillated and inclined; further, as shown in FIG. 4, FIG. 6, and FIG. 7, the pivoting end 341 is subjected to the rotation of the driving block 31. The yoke member 32 is driven to yaw with respect to the scissor bolt 35, and further drives the coupling end 342 to be reversely biased relative to the scissor bolt 35, so that the tool provided by the coupling end 342 can perform a workpiece surface Grinding operation.

Preferably, when the grinding operation is performed in a small space by using the power grinding device provided by the present invention, the angle between the tool fixing member 34 and the connecting portion 11 can be adjusted, so as to obtain a better effect in a limited space. For the grinding operation, as shown in FIG. 8 , the user can loosen the fastener 231 to release the abutting member 23 and the abutting ring 122 of the body 10, thereby rotating relative to the driving portion 12 . The binding seat 20 is configured to adjust the angle between the tool fixing member 34 and the connecting portion 11 . After the completion, the fastener 231 is locked again, and the abutting member 23 is again abutted against the abutting ring 122. After the joint 20 and the body 10 are re-fixed, they can be used.

Further, as shown in FIG. 9 and FIG. 10, the second preferred embodiment of the present invention is different from the first preferred embodiment in that the body 10 further includes an extension portion 13 and a transmission portion 14, wherein the extension portion The portion 13 is formed in a straight cylindrical shape, and is combined with the driving portion 12 and the coupling seat 20 . The extending portion 13 is provided with an abutting seat 131 and a linking shaft 132 . The abutting seat 131 extends into the mounting groove 21 . The user can push the abutting member 23 through the fastener 231, and the abutting member 23 abuts against the abutting seat 131, thereby fixing the binding base 20 to the body 10. The linking shaft 132 is provided. The driving shaft 132 is provided with a threaded end 133 extending from the bottom of the extending portion 13 and screwed with the driving block 31.

The transmission portion 14 is disposed inside the body 10 and is interposed between the driving portion 12 and the extending portion 13. The transmission portion 14 includes an upper coupling block 141 and a lower coupling block 142. The upper coupling block 141 is sleeved. The lower coupling block 142 is fixed to the end of the linkage shaft 132 away from the threaded end 133, and the lower coupling block 142 has a shape matching with the upper coupling block 141, so that the lower coupling block 142 is fixed to the end of the threaded end 133. The upper and lower coupling blocks 141, 142 can be engaged with each other, so that when the driving shaft 121 rotates, the linkage shaft 132 is rotated, and the driving block 31 is further driven to rotate, so that the driven module 30 is actuated.

With the above technical features, the present invention effectively reduces the length of the entire power grinding device by forming an angle between the driving portion 12 and the tool fixing member 34, thereby improving the difficulty of the existing power grinding device 80 to extend deeper or deeper. The disadvantage of the narrow workpiece allows the user to extend the dynamic grinding device into the narrow space for grinding the surface of the workpiece. Further, the drive shaft 12 can be connected to the extension portion 13 to extend into a deeper region, preferably The rotatably coupled with the driving portion 12 or the extending portion 13 through the binding seat 20 can change the orientation of the tool fixing member 34 and increase the applicability of the power grinding device in different narrow spaces. Therefore, the present invention is relatively In the prior art power polishing apparatus 80, the polishing operation in a small space has a better use effect, thereby providing a power polishing apparatus which can perform grinding in a narrow space.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art may use the present invention without departing from the scope of the present invention. Equivalent embodiments of the various changes or modifications made by the disclosed technical content, and without departing from the technical solutions of the present invention, are still within the scope of the technical solutions of the present invention.

10‧‧‧ Ontology
11‧‧‧Connecting Department
12‧‧‧ Drive Department
121‧‧‧Drive shaft
122‧‧‧Abutment ring
13‧‧‧Extension
131‧‧‧Abutment
132‧‧‧ linkage axis
133‧‧ Threaded end
14‧‧‧Transmission Department
141‧‧‧ Upper binding block
142‧‧‧Under the joint block
20‧‧‧ joint
21‧‧‧Installation slot
211‧‧‧ accommodating slots
22‧‧‧容容
221‧‧‧ openings
23‧‧‧Attendance
231‧‧‧fasteners
30‧‧‧Slave module
301‧‧‧ radial bearing
302‧‧‧ thrust bearing
31‧‧‧ drive block
32‧‧‧Partial pieces
321‧‧‧Ball joint
322‧‧‧ pivotal department
33‧‧‧ Positioning parts
330‧‧‧Locker
331‧‧‧Positioning holes
34‧‧‧Tools
340‧‧‧Latch
341‧‧‧ pivot end
342‧‧‧Binding end
343‧‧‧Perforation
35‧‧‧Scissors bolts
351‧‧‧ nuts

1 is a perspective view of a first preferred embodiment of the present invention. Figure 2 is a partially enlarged perspective exploded view of the first preferred embodiment of the present invention. Figure 3 is a partially enlarged side elevational view, partially in section, of the first preferred embodiment of the present invention. Figure 4 is a bottom plan view, partially enlarged, of the first preferred embodiment of the present invention. Fig. 5 is a schematic view showing the operation of the first aspect of the first preferred embodiment of the present invention. Figure 6 is a schematic view showing the operation of the second aspect of the first preferred embodiment of the present invention. Figure 7 is a schematic view showing the operation of the third aspect of the first preferred embodiment of the present invention. Figure 8 is a schematic view showing the operation of the first preferred embodiment of the present invention. Figure 9 is a perspective view of a second preferred embodiment of the present invention. Figure 10 is a partially enlarged side elevational view, partially in section, of the second preferred embodiment of the present invention. Figure 11 is a perspective view of a conventional power polishing apparatus.

Claims (12)

A power grinding device includes: a body connected to a power source, and the body is provided with a driving portion, the driving portion includes a driving shaft; and a coupling seat rotatably coupled to the body And a driven module disposed in the binding base and connected to the body, the driven module is provided with a biasing member and a tool fixing member, wherein the biasing member is coupled to the driving shaft The yoke is connected to the yoke in a middle portion, and the two ends of the tool holder are respectively a pivoting end and a joint end, and the pivoting end is coupled to the yoke The joint is pivoted and an angle is formed between the tool holder and the driving portion, and the joint end protrudes from the joint. The power grinding device of claim 1, wherein the coupling seat is provided with a mounting groove and an abutting member, one side of the mounting groove is radially recessed with a receiving groove, and the driving portion of the body extends into the The mounting groove is disposed in the receiving groove, and is fixed to the driving portion by abutting against the driving portion. The power grinding device of claim 2, wherein the body comprises a connecting portion, one end of the connecting portion is connected to the power source, and the other end is obliquely connected to the driving portion. The power grinding device of claim 1, wherein the body is provided with an extension portion, the extension portion is connected to the driving portion, and the extension portion is provided with a linkage shaft, and the linkage shaft is coaxially connected with the drive shaft. The binding seat is provided with a mounting groove and an abutting member. One side of the mounting groove is radially recessed with a receiving groove, and the extending portion of the body extends into the mounting groove, and the abutting member is disposed in the receiving portion. The groove is grooved and can abut against the extension. The power grinding device of claim 4, wherein the body is provided with a transmission portion, the transmission portion includes an upper coupling block and a lower coupling block, the upper coupling block is fixed to the driving shaft, and the lower coupling block is coupled with the coupling block The shaft phase is fixed and the lower joint block engages the upper joint block. The power grinding device of claim 5, wherein the body comprises a connecting portion, one end of the connecting portion is connected to the power source, and the other end is obliquely connected to the driving portion. The power grinding device of any one of claims 1 to 3, wherein the driven module is provided with a driving block and a positioning member, the driving block is coaxially screwed with the driving shaft, and the biasing member is In combination with the driving block, the positioning member is fixedly coupled to the coupling seat, and the tool fixing member is pivotally connected to the positioning member. The power grinding device of claim 7, wherein the two ends of the yoke are respectively a ball joint and a pivot end, and the ball joint is eccentrically coupled to the driving block through a radial bearing, the pivot The terminal is pivotally connected to the pivot end of the tool holder. The power grinding device of claim 8, wherein the positioning member and the tool fixing member are pivotally connected through a scissor bolt, and a thrust bearing is disposed between the positioning member and the tool fixing member. The power grinding device according to any one of claims 4 to 6, wherein the driven module is provided with a driving block and a positioning member, the driving block is coaxially screwed with the linking shaft, and the biasing member is In combination with the driving block, the positioning member is fixedly coupled to the coupling seat, and the tool fixing member is pivotally connected to the positioning member. The power grinding device of claim 10, wherein the two ends of the yoke are respectively a ball joint and a pivot end, and the ball joint is eccentrically coupled to the driving block through a radial bearing, the pivot The terminal is pivotally connected to the pivot end of the tool holder. The power grinding device of claim 11, wherein the positioning member and the tool fixing member are pivotally connected through a scissor bolt, and a thrust bearing is disposed between the positioning member and the tool fixing member.