CN219666017U - Polishing tool - Google Patents

Abstract

The utility model discloses an electric tool, and particularly relates to a polishing tool. The grinding tool comprises a working head, wherein the working head comprises an execution shell, an output unit and a driving device. The output unit is arranged on the execution shell and outputs power to the outside. The driving means comprises a motor for driving the movement of the output unit. The execution shell comprises a dust outlet for discharging dust in the execution shell. The working head also comprises a lining which is arranged on the inner wall of the dust outlet. According to the utility model, the lining is arranged on the inner wall of the dust outlet, so that the abrasion resistance of the dust outlet is improved, and the service life of the polishing tool is further prolonged.

Description

Polishing tool

Technical Field

The utility model relates to an electric tool, in particular to a polishing tool.

Background

The sanding tool is a power tool that can be used to sand a wall surface. The polishing tool can vibrate for a long time and at a high frequency in the polishing process, and the vibration can enable other parts of the polishing tool, particularly the parts of the working head to be worn mutually, so that the loss period of each part of the working head is short, the frequency is high, and the service life of the polishing tool is further shortened.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide a polishing tool with longer service life.

In order to achieve the above object, the present utility model adopts the following technical scheme:

the utility model provides a polishing tool, which comprises a working head, wherein the working head comprises: an execution case; the output unit is arranged on the execution shell and outputs power to the outside; a driving device including a motor for driving the output unit to move; the execution shell comprises a dust outlet for discharging dust in the execution shell. The working head also comprises a lining which is arranged on the inner wall of the dust outlet.

In some embodiments, the bushing is in interference fit with the dust outlet.

In some embodiments, the polishing tool further includes a brush mounted on the execution housing and disposed at an outer periphery of the output unit, the brush being capable of collecting dust generated by polishing of the output unit; the brush includes first brush and second brush, and first brush and second brush can set up and detachably install in the execution casing mutually separate.

In some embodiments, the first brush and/or the second brush are magnetically secured to the implement housing.

In some embodiments, the brush includes a brush support for mounting bristles of the brush to the implement housing. The sanding tool also includes a wear member for coating at least a portion of an outer surface of the brush support frame.

In some embodiments, the sanding tool further includes a lighting device disposed about the implement housing, the lighting device including a light strip disposed within the implement housing. The execution shell comprises a lamp groove for accommodating the lamp belt, and the lamp groove is annularly arranged.

In some embodiments, the lighting device is configured to: the illumination intensity at a position 10 cm from the lower end of the brush is at least 1020 lux; the illumination intensity at a position 15 cm from the lower end of the brush is at least 550 lux; the illumination intensity at a location 20 cm from the lower end of the brush is at least 255 lux.

In some embodiments, the polishing tool further comprises a dust collection pipe, and dust in the execution casing enters the dust collection pipe through the dust outlet; wherein, the power line of the polishing tool is fixed with the dust collection pipe through a binding belt.

In some embodiments, the sanding tool further includes a lever for grasping by a user. The operation lever includes: a support rod; the support rod is detachably connected with the extension rod, and the end part of the extension rod is inserted into the support rod; and the lock catch is used for adjusting the effective length of the extension rod.

In some embodiments, the lever is rotatable relative to the working head about a first line of rotation; the lock catch takes the second straight line as a central axis; wherein the distance between the first straight line and the second straight line is more than or equal to 0.5 meter and less than or equal to 2 meters.

The utility model has the advantages that: through set up the bush at the inner wall of dust outlet, improved the abrasion resistance of dust outlet, and then improved milling tool's life.

Drawings

FIG. 1 is a perspective view of a sanding tool provided in accordance with one embodiment of the present utility model;

FIG. 2 is a perspective view of a portion of the structure of a sanding tool including a working head provided in accordance with one embodiment of the present utility model;

FIG. 3 is a perspective view of another view of a portion of the construction of a sanding tool including a working head provided in accordance with one embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a portion of the structure of a sanding tool provided in one embodiment of the present utility model including a working head;

FIG. 5 is a perspective view of a portion of the construction of a sanding tool including a working head provided in accordance with one embodiment of the present utility model in a disassembled state;

FIG. 6 is an enlarged view of area A of FIG. 4;

FIG. 7 (a) is a perspective view of a working head according to an embodiment of the present utility model with a housing mounted thereon with a portion removed;

FIG. 7 (b) is a perspective view of a partially installed housing provided in an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a first mounting portion and a second mounting portion provided in an embodiment of the present utility model;

FIG. 9 is an enlarged view of area B of FIG. 8;

FIG. 10 (a) is a perspective view of a portion of an operating lever of a latch in a latched condition according to one embodiment of the present utility model;

FIG. 10 (b) is a perspective view of a portion of an operating lever of a latch in an adjusted state according to an embodiment of the present utility model;

fig. 11 is a perspective view showing a partial structure of a removal control device for a work head according to an embodiment of the present utility model;

FIG. 12 is a cross-sectional view of a portion of the construction of a sanding tool provided in accordance with one embodiment of the present utility model;

FIG. 13 is an enlarged view of region C of FIG. 12;

FIG. 14 is an exploded view of a portion of the construction of a sanding tool including a lighting device provided in accordance with one embodiment of the present utility model;

FIG. 15 is a perspective view of a portion of the structure of a sanding tool including a working head provided in accordance with one embodiment of the present utility model;

fig. 16 is a plan view of a work head provided in an embodiment of the present utility model.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The present utility model will now be described in detail with reference to the drawings and examples using a sanding tool as an example.

As shown in fig. 1, the polishing tool 1 includes a tool body 10, and the tool body 10 includes a work head 11, a lever 12, and a control link 13. In some embodiments, the abrasive tool 1 further comprises a control device 20 separate from the tool body 10, e.g., the control device 20 exists as a separate entity that can communicate by wireless communication with control circuitry within the tool body 10 to control the operation of the working head 11 or other accessory on the tool body 10.

As shown in fig. 2 to 3, the working head 11 mainly includes an execution case 111, an output unit 112, and a driving device 113. Wherein, the output unit 112 is used for executing operation on the external output power, the driving device 113 is used for driving the output unit 112 to work, and the output unit 112 is mounted on the execution casing 111. Wherein as shown in fig. 1, the actuating system 111 in this embodiment is mounted to one end of the operating rod 12, and the output unit 112 includes a polishing member for polishing, typically sand paper, typically mounted to a mounting surface at the end of the actuating system 111, in this example, the polishing tool 1 is embodied as circular wall sand. Of course, in other embodiments, triangular sand, flat sand, or polisher, etc. may be used. The driving means 113 comprises a motor for driving the movement of the grinding member. In this embodiment, the motor is a motor, specifically a brushless motor. In other embodiments, the motor may be a brushed motor.

As shown in fig. 4, in some embodiments, the working head 11 further comprises a transmission 114, the transmission 114 being adapted to connect and transmit between the driving device 113 and the output unit 112, the transmission 114 being in particular a gear transmission and/or a friction transmission or the like. In other embodiments, work head 11 may not include transmission 114, and drive 113 directly drives implement system 111.

As shown in fig. 3 to 4, in the present embodiment, the output unit 112 includes a support plate 1121 and a grinding disk 1122 connected to the support plate 1121, and the support plate 1121 is connected to an output shaft 1141 of the transmission 114. The partial output unit 112 is installed in the cavity of the execution case 111. When in use, the output shaft 1141 drives the supporting plate 1121 to rotate, the supporting plate 1121 is fixedly connected with the grinding disc 1122, so that the grinding disc 1122 rotates, and sand paper on the grinding disc 1122 contacts with a surface to be polished, thereby realizing polishing.

As shown in fig. 1, the operation rod 12 may be a fixed-length connection rod or an adjustable-length telescopic rod, and the operation rod 12 is made of metal, preferably aluminum alloy. It can of course also be made of carbon fibre material or plastic. One end of the operation lever 12 is connected to the working head 11 via a connecting member 121, and the other end of the operation lever 12 is provided with a grip portion 122 for a user to grasp. The operator can move the work head 11 to a position to be polished by holding the operation lever 12. In the present embodiment, the handle portion 122 may be a "straight" type handle provided at an end of the operation lever 12 as shown in fig. 1. Alternatively, the handle 122 may be shaped to be easily held by a user, such as an "L" shape, a "T" shape, or a flat "O" shape. In an alternative implementation, the lever 12 is a hollow lever body, and the power line or communication line between the control device 20 and the working head 11 is arranged within the hollow lever body of the lever 12, or within a harness pipe provided within the lever 12. In an alternative implementation, the lever 12 is a solid connection rod, and the power or communication lines between the control device 20 and the working head 11 are arranged in a wire harness conduit attached to the surface of the lever 12.

The tool body 10 further comprises a control connection end 13. The control connection 13 is understood to mean a connection socket or the like formed at a place remote from the working head 11 by a power line or a communication line between the control device 20 and the working head 11.

In this embodiment, one end of the control device 20 is provided with a tool interface 201, and the tool interface 201 may be connected to the tool connection end 130 of the tool body 10, so as to implement connection between the tool body 10 and the control device 20. The control device 20 tool interface 201 may be a power outlet or a power socket. The other end of the control device 20 is provided with a power interface 202 for enabling access to a power source, which may be an ac power source, for example comprising a plug and a power cord connected to mains, or a dc power source, for example one or more battery packs. Alternatively, when the power source is a plurality of battery packs, the plurality of battery packs may be configured to be switched in series or in parallel or in series-parallel. Alternatively, the power supply may have two discharge modes, which may be switched manually or automatically, for simultaneous discharge of multiple battery packs or for sequential discharge. Of course, as an alternative embodiment, the power source includes both a dc power source and an ac power source, that is, the user may select the applicable power source according to the requirements and the working conditions.

In one embodiment, as shown in FIG. 1, the sanding tool 1 further includes a remote control device 30. The remote control device 30 is capable of data communication with the control device 20 and transmits a remote control signal to the control device 20 to control the operation of the drive device 113 on the tool body 10. Illustratively, the remote control device 30 may remotely control the rotation or stopping or changing state of the motor on the sanding tool 1, and the like. Alternatively, the remote control device 30 may exist independently of the tool body 10, or may be detachably mounted on the tool body 10 or the control device 20.

In some embodiments, the tool body 10 of the sanding tool 1 may also include other accessories, such as a lighting device 14 and a brush 15. The lighting device 14 can provide illumination for the polishing tool 1, and can also enable a user to clearly observe the conditions of the polishing object and the working head 11 when the tool performs high-altitude operation, so that the operation is convenient. In alternative implementations, the illumination device 14 may be mounted on the implement housing 111 or on the lever 12 proximate the working head 11.

The brush 15 can prevent dust generated by polishing from flying, and as shown in fig. 4, the brush 15 is provided around the outer periphery of the grinding disk 1122 at a distance from the grinding disk 1122. When the sandpaper on the abrasive disk 1122 contacts the surface to be polished, the brush 15 also contacts the surface to be polished.

As shown in fig. 5, the execution case 111 is further provided with a dust outlet 1112 for discharging dust in the execution case 111. The tool body 10 further comprises a dust suction pipe 16 for cooperating with the dust outlet 1112, and dust in the implement housing 111 enters the dust suction pipe 16 through the dust outlet 1112. As shown in fig. 6, in some embodiments, to reduce the abrasion of the dust outlet 1112 by the flowing dust and improve the service life of the polishing tool 1, the working head 11 further includes a bushing 115, and the bushing 115 is disposed on an inner wall surface of the dust outlet 1112. The bushing 115 may be an interference fit with the dust outlet 1112. The bushing 115 may be metal or rubber.

As shown in fig. 7 to 8, the working head 11 further includes a mounting housing 116, and the transmission 114 and the driving device 113 are accommodated in a cavity of the mounting housing 116. In some embodiments, the mounting housing 116 includes a first mounting portion 1161, the first mounting portion 1161 being configured to be coupled to the actuation housing 111. In this embodiment, the first mounting portion 1161 includes a plurality of spaced apart columns, with some columns being connected to the mounting housing 116 that houses the drive device 113 and some columns being connected to the mounting housing 116 that houses the transmission device 114.

The elastic connection between the execution casing 111 and the first mounting portion 1161 is convenient for the working head 11 to be tightly attached to the polished surface, and the polishing effect is ensured. As shown in fig. 9, specifically, the execution case 111 is provided with a second mounting portion 1111, the first mounting portion 1161 is sleeved on the second mounting portion 1111, and a spring 117 is provided therebetween. In use, the operator will press down the working head 11 with force, so that the first mounting portion 1161 compresses the spring 117, and the spring 117 compresses the second mounting portion 1111, and further compresses the execution housing 111, so that the brush 15 can be in close contact with the polished surface, and dust is prevented from flying. In other embodiments, the actuator housing 111 may include a first mounting portion, and the mounting housing 116 may include a second mounting portion.

In some embodiments, as shown in fig. 9, in order to reduce the abrasion of the first mounting portion 1161 to the second mounting portion 1111 and improve the service life of the polishing tool 1, the bushing 115 may be disposed on the outer wall surface of the second mounting portion 1111. In some embodiments, the tool body 10 includes a plurality of bushings 115, a portion of the bushings 115 may be disposed at an inner wall surface of the dust outlet 1112, and a portion of the bushings 115 may be disposed at an outer wall surface of the second mounting portion 1111.

In some embodiments, to reduce the wear of the second mounting portion 1111 by the screw, and increase the useful life of the grinding tool 1, the tool body 10 further includes a bumper 118. As shown in fig. 9, the buffer 118 is provided between the flange surface of the screw and the upper surface of the second mounting portion 1111. The cushioning member 118 may be a rubber cushion.

In some embodiments, to reduce frictional losses due to sanding vibrations, the power cord of the sanding tool 1, such as a power cord or an anti-static cord, may be secured with the suction tube 16 by a tie to reduce friction between the power cord and the work head 11.

As shown in fig. 10, the operation lever 12 includes a support lever 123 and an extension lever 124 which are detachably connected, and an end of the extension lever 123 is inserted into the support lever 124. To facilitate adjustment of the effective length of the extension rod 124, the lever 12 further includes a lock 125, and the support rod 123 is locked to the extension rod 124 by the lock 125. When it is desired to adjust the effective length of the extension rod 124, the operator can switch the shackle 125 from the locked state as shown in fig. 10 (a) to the adjusted state as shown in fig. 10 (b).

As shown in fig. 11, one end of the operation lever 12 is connected to the work head 11 through a connection member 121, and specifically, the connection member 121 is connected to the mounting housing 116 through a rotation device (not shown in the drawing) that allows the connection member 121 to rotate about the first straight line 101 as a rotation axis, thereby allowing the operation lever 12 to rotate relative to the work head 11 about the first straight line 101 as a rotation axis. The lock catch 125 takes the second straight line 102 as a central axis, and the distance between the first straight line 101 and the second straight line 102 is L1. For convenience of user operation, 0.5 m.ltoreq.L1.ltoreq.2 m may be set, and L1 may be preferably 0.6 m or 1 m.

The existing polishing tool in the market has the problems of low brightness of an illuminating lamp and small illumination range, and is not beneficial to an operator to polish rapidly. In order to solve the problem, the lighting device 14 is arranged at the periphery of the execution casing 111, and the lighting device 14 is in a ring shape, so that the lighting is conveniently provided in all directions. Illustratively, the lighting device 14 is an LED ring light, and the lighting device 14 is mounted in the actuator housing 111. The present utility model is not limited to the mounting position, shape setting, electrical connection relation to the work head 11, and the like of the illumination device 14.

As shown in fig. 12 to 14, in one embodiment, the lighting device 14 includes a light strip 141 disposed within the execution casing 111. The light groove 1110 is arranged in the execution casing 111, the light groove 1110 is annular, the light belt 141 is arranged in the light groove 1110, and at least part of the execution casing 111 is made of light-transmitting materials. The lighting device 14 further includes a lamp base 142, the lamp band 141 is mounted on the lamp base 142, and the lamp base 142 is disposed in the lamp slot 1110.

Specifically, the execution case 111 includes a first case 111a and a second case 111b. The second housing 111b is connected to the first housing 111a and is used for blocking the lamp vessel 1110. The upper end of the brush 15 is connected to the second housing 111b, and the other end of the brush 15 is a lower end. An axial distance L2 between the upper end surface of the lamp band 141 and the lower end of the brush 15 is defined, and L2 may be 36mm, 40mm or 45mm.

In some embodiments, the illumination device 14 has an illumination range of 1 meter, the illumination device 14 has an illumination intensity of at least 1020 lux at a position 10 cm from the lower end of the brush, an illumination intensity of at least 550 lux at a position 15 cm from the lower end of the brush, and an illumination intensity of at least 255 lux at a position 20 cm from the lower end of the brush. The light strip 141 may include 20 to 100 LED light beads.

In some embodiments, the lighting device 14 further includes an annular lamp housing and a plug seal, and during assembly, a worker first plugs the plug seal into the annular lamp housing and then applies the sealant.

The brush is worn during the polishing process, so that the user needs to replace the brush at random. However, the brush of the existing polishing tool is difficult to detach, and the process of replacing the brush by a user is complicated. Referring to fig. 15, an embodiment of the sanding tool provides a brush 25 for easy user replacement. The portions of the above embodiments that are compatible with the present embodiment can be applied to the present embodiment, and only the differences between the present embodiment and the above embodiment will be described below.

As shown in fig. 15 to 16, a brush 25 is provided on the working head 21. The brush 25 includes a first brush 251 and a second brush 252, and the first brush 251 and the second brush 252 are detachable from each other and detachably mounted to the execution case 211. In some embodiments, as shown in fig. 16, the brush 25 further includes a third brush 253, and the first brush 251, the second brush 252, and the third brush 253 can be separated from each other and detachably mounted to the execution case 211.

The brush 25 and the actuating housing 211 may be fastened by a snap-fit type. But the buckle structure is mostly plastic material, and the buckle structure has deformation, wear failure or even fracture risk after plastic aging. In one embodiment, the brush 25 and the execution housing 211 are fixed by magnetic attraction, so that the above problem of the fastening structure can be avoided. In some embodiments, a magnet is disposed at a portion of the actuating housing 211, and a metal sheet is disposed at a corresponding position of the back of the brush 25, so that a sufficient magnetic force is generated to attract the brush 25 to the actuating housing 211.

In one embodiment, the brush 25 includes a brush support frame 254, and a wear member (not shown) may be provided on the outside of the brush support frame 254. The wear-resistant member may be made of rubber and is wrapped around at least a portion of the brush support frame 254 to reduce wear of the brush support member. Meanwhile, the wear-resistant piece can also prevent the brush support frame 254 from being stained with putty tumor when the polishing tool 1 polishes the wall, thereby prolonging the service life of the brush 25.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model. It should also be appreciated by those skilled in the art that the above-described solution may be applied to garden tools, such as lawnmowers, chain saws, pruners, etc., in addition to power tools that are grinding tools, such as polishers, sanders, etc.

Claims (10)

1. A sanding tool comprising a working head, the working head comprising:

an execution case;

the output unit is arranged on the execution shell and outputs power to the outside;

a driving device including a motor for driving the output unit to move;

the execution shell comprises a dust outlet for discharging dust in the execution shell;

the working head is characterized by further comprising a lining, and the lining is arranged on the inner wall of the dust outlet.

2. The abrasive tool of claim 1, wherein the bushing is in interference fit with the dust outlet.

3. The polishing tool according to claim 1, further comprising a brush mounted on the execution casing and provided at an outer periphery of the output unit, the brush being operable to collect dust generated by polishing of the output unit; the hair brush comprises a first hair brush and a second hair brush, and the first hair brush and the second hair brush are arranged in a mutually separated mode and detachably mounted on the executing shell.

4. A sanding tool as defined in claim 3, wherein the first brush and/or the second brush is magnetically secured with the implement housing.

5. The polishing tool according to claim 4, wherein,

the hairbrush comprises a hairbrush supporting frame and a hairbrush supporting frame, wherein the hairbrush supporting frame is used for installing the hairbrush of the hairbrush on the executing shell;

the abrasive tool also includes a wear member for coating at least a portion of the outer surface of the brush support frame.

6. The polishing tool according to claim 3, wherein,

the polishing tool further comprises a lighting device, wherein the lighting device is arranged around the execution shell, and comprises a lamp belt which is arranged in the execution shell;

the execution shell comprises a lamp groove which is used for accommodating the lamp belt, and the lamp groove is annularly arranged.

7. The abrasive tool of claim 6, wherein the illumination device is configured to:

the illumination intensity at a position 10 cm from the lower end of the brush is at least 1020 lux;

the illumination intensity at a position 15 cm from the lower end of the brush is at least 550 lux;

the illumination intensity at a position 20 cm from the lower end of the brush is at least 255 lux.

8. The abrasive tool of claim 1, further comprising a dust extraction tube, wherein dust within the implement housing enters the dust extraction tube through the dust outlet; wherein, the power line of the polishing tool is fixed with the dust collection pipe through a binding belt.

9. The abrading tool of claim 1, wherein the abrasive tool comprises a polishing pad,

the polishing tool also comprises an operation rod for being held by a user;

the operation lever includes:

a support rod;

the support rod is detachably connected with the extension rod, and the end part of the extension rod is inserted into the support rod;

and the lock catch is used for adjusting the effective length of the extension rod.

10. The abrading tool of claim 9 wherein the abrasive article comprises,

the operating rod can rotate relative to the working head by taking a first straight line as a rotation axis;

the lock catch takes a second straight line as a central axis;

wherein the distance between the first straight line and the second straight line is more than or equal to 0.5 meter and less than or equal to 2 meters.