Long handle grinding machine and grinding system
By incorporating a dust extraction channel and a snap-fit dust collection device into the long-handled grinder, the problem of dust diffusion in traditional grinders is solved, achieving effective dust collection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- KEYWAY TECH (NANTONG) CO LTD
- Filing Date
- 2024-10-30
- Publication Date
- 2026-05-01
AI Technical Summary
Dust generated during the use of traditional wall sanders is difficult to collect effectively, leading to health risks, especially when using high-efficiency electric sanders, where dust spreads significantly.
Design a long-handled grinder that effectively collects dust by setting dust discharge channels on the main housing, support housing, connecting rod, and extension rod, and equipping them with snap-fit and positioning features that engage with the dust collection device, regardless of whether the extension rod is used.
It effectively collects dust generated during grinding, preventing dust from spreading in the workplace, protecting user health, and improving the safety of the working environment.
Smart Images
Figure CN121946302A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wall sanding, and specifically to a long-handled sander and sanding system. Background Technology
[0002] Traditional wall sanding is mainly done manually with a brush, which is inefficient. The advent of electric wall sanders has greatly improved work efficiency (approximately three times). Long-handled sanders can be used to sand higher walls, while ceilings can be sanded by connecting an extension rod. Regardless of whether an extension rod is installed, the dust generated during sanding must be collected; otherwise, if exposed to the air and inhaled by the user, it will have a significant impact on health. Summary of the Invention
[0003] The purpose of this application is to overcome the shortcomings of the existing technology and provide a long-handled grinder and grinding system with improved dust collection effect.
[0004] This application provides a long-handled grinder, including a main housing, a drive unit disposed within the main housing, a grinding unit driven by the drive unit, a support housing rotatably connected to the main housing, a flexible hose connecting the main housing and the support housing, and a connecting rod connecting the support housing. The main housing, flexible hose, support housing, and connecting rod together form a first dust discharge channel, which is connected to the grinding unit and includes a first dust discharge port. The long-handled grinder also includes an extension rod, which forms a second dust discharge channel, which includes a dust discharge inlet and a second dust discharge outlet. The extension rod is detachably connected to the connecting rod to allow the dust discharge inlet to communicate with and disconnect from the first dust discharge outlet. The long-handled grinder includes a first mating part disposed at the first dust discharge outlet and a second mating part disposed at the second dust discharge outlet. The first mating part and the second mating part include the same mating features and are configured to connect the long-handled grinder to a dust collection device.
[0005] Furthermore, the long-handled grinder includes a first handle and a second handle, the first handle being formed in the support housing, and the second handle being located outside the connecting rod and adjacent to the first dust outlet.
[0006] Furthermore, the first mating part is integrally connected to the second handle.
[0007] Furthermore, the extension rod includes a third handle, which is sleeved on the end of the extension rod away from the second handle, and the second mating part is integrally connected to the third handle.
[0008] Furthermore, the mating feature includes a snap-fit portion that engages with the dust collection device.
[0009] Furthermore, the mating feature also includes a positioning part that aligns with the dust collection device.
[0010] Furthermore, the latching part and the positioning part are arranged circumferentially along the first mating part.
[0011] On the other hand, this application also provides a polishing system, including a dust collection device and a long-handled polisher as described above.
[0012] Furthermore, the dust collection device includes a dust collection pipe and a connector, the connector connecting the dust collection pipe to a first mating part or a second mating part, the connector including an elastic arm that is fastened to the first mating part or the second mating part.
[0013] Furthermore, the dust collection device also includes a limiter, which has an operable first state and a second state; in the first state, the limiter restricts the elastic arm from undergoing elastic deformation; in the second state, the limiter allows the elastic arm to undergo elastic deformation.
[0014] This application provides a long-handled grinder that connects to a dust collection device by setting the same mating features. Regardless of whether an extension rod is connected, it can effectively collect the dust generated during grinding and prevent the dust from spreading in the work environment. Attached Figure Description
[0015] Figure 1 This is a perspective view of a long-handled grinder according to an embodiment of this application.
[0016] Figure 2 yes Figure 1 The diagram shows the structure of the main housing, drive unit, and grinding unit, with a partial cross-section of one half of the main housing.
[0017] Figure 3 for Figure 1 The diagram shows the connecting rod, support housing, and structural schematic of the long-handled grinder.
[0018] Figure 4 for Figure 3 The diagram shows the connection between the connecting rod and the dust collection device.
[0019] Figure 5 for Figure 1 The diagram shows the structure of the long-handled grinder after the extension rod is connected.
[0020] Figure 6 for Figure 5 The diagram shows the connection between the extension rod and the dust collection device. Detailed Implementation
[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.
[0022] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation.
[0023] The terms “comprising” or “including” and similar expressions mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar expressions are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0024] Combination Figures 1 to 2 The long-handled sander of this application embodiment includes a main housing 1, a drive unit 2 disposed within the main housing 1, a sanding unit 3 driven by the drive unit 2, a support housing 4 rotatably connected to the main housing, a flexible hose 5 connecting the main housing 1 and the support housing 4, and a connecting rod 6 connecting the support housing 4. The main housing 1 includes two half-shells that are snapped together, and the support housing 4 includes a pair of fork arms 41, which are rotatably mounted on the main housing 1. The drive unit 2 includes a motor 21 and a reduction mechanism 22 (e.g., a reduction gear set) driven by the motor. The reduction mechanism 22 is used to convert the high-speed, low-torque output of the motor 21 into a low-speed, high-torque output and transmit it to the sanding unit 3. The sanding unit 3 protrudes from the main housing 1 to sand the wall. A control switch 42 is provided on the support housing 4 to control the operating status of the motor.
[0025] Combination Figure 3 and Figure 4 The main housing 1, hose 5, support housing 4, and connecting rod 6 together form a first dust discharge channel 10. The first dust discharge channel 10 is connected to the grinding unit 3 and includes a first dust discharge port 101. The dust generated during grinding is discharged to the first dust discharge port 101 through the first dust discharge channel 10. The long-handled grinder includes a first mating part 102 disposed at the first dust discharge port 101. The first mating part 102 has mating features and is configured to connect the first dust discharge port to a dust collection device 90. The dust collection device 90 includes a dust collection pipe 91, a connector 92 connecting the dust collection pipe and the first mating part, and a dust bag or vacuum cleaner (not shown).
[0026] The long-handled grinder includes a first handle 11 and a second handle 12. The first handle 11 is formed on the support housing 4, and the control switch 42 is adjacent to the second handle 12 so that the user's fingers holding the first handle 12 can operate the control switch 42. The second handle 12 is located outside the connecting rod 6 and adjacent to the first dust outlet 101.
[0027] The first mating part 102 is integrally connected to the second handle 12. Specifically, the mating feature includes a snap-fit part 103 (snap-fit groove or snap-fit arm) for connection with the connector 92. In this embodiment, the mating feature includes a snap-fit groove, and the connector 92 includes an elastic arm 21 that snaps into the snap-fit groove. The first mating part 102 and the connecting part 92 are mated through the snap-fit engagement of the elastic arm and the snap-fit groove, while the dust collection pipe 91 is aligned and connected to the connecting rod 6. Preferably, the mating feature further includes a positioning part 104 (e.g., a notch or protrusion), which is used to engage with the positioning structure of the dust collection device to achieve alignment. The snap-fit part 103 and the positioning part 104 are arranged circumferentially around the first mating part 102. After the positioning part 104 is aligned, the snap-fit engagement of the connector 92 of the dust collection device with the first mating part 102 is achieved through the snap-fit part 103 and the elastic arm 21.
[0028] Optionally, the dust collection device 90 further includes a limiter (not shown), which has an operable first state and a second state; in the first state, the limiter restricts the elastic arm 921 from elastically deforming; in the second state, the limiter allows the elastic arm 921 to elastically deform. The limiter is, for example, a threaded component, which enables axial movement via a threaded connection to abut against the elastic arm (preventing elastic deformation) or disengage from the elastic arm.
[0029] It is easy to understand that, Figure 3 and Figure 4 The illustrated long-handled sander structure can be used for sanding near-side walls. The user operates the sander by holding the first handle 11 and the second handle 12. Please refer to... Figure 5 and Figure 6The long-handled sander also includes an extension rod 7 and a third handle 8. The extension rod 7 forms a second dust discharge channel, which includes a dust discharge inlet and a second dust discharge outlet 72. The extension rod 7 is detachably connected to the connecting rod 6 to allow for connection and disconnection between the dust discharge inlet and the first dust discharge outlet 101 (i.e., the first dust discharge channel and the second dust discharge channel are connected). The user can hold the second handle 12 and the third handle 8. The hand holding the second handle 12 can operate the control switch 41 to operate the long-handled sander to sand higher walls and ceilings.
[0030] The long-handled grinder also includes a second mating part 721 located at the second dust outlet 72, which is sleeved on the extension rod 7. The second mating part 721 has the same or similar mating features as the first mating part 102; that is, the second mating part may also include a snap-fit part and a positioning part, used to connect the dust collection device with the extension rod and the second dust outlet, and simultaneously align and connect the second dust outlet 72 with the dust collection pipe 91. It is easy to understand that the dust outlet has the same docking structure as the dust collection device. Based on the identical mating structure provided by the first and second mating parts, the long-handled grinder, whether used with or without the extension rod, can effectively guide the dust generated during grinding into the dust collection device 9 through the first dust outlet channel (and the second dust outlet channel), preventing dust from spreading in the workplace and harming the user's health.
[0031] On the other hand, this application also provides a polishing system, which includes a long-handled polisher and a dust collection device as described above.
[0032] This application provides a long-handled grinder that connects to a dust collection device by setting the same first mating part. Regardless of whether an extension rod is connected, it can effectively collect the dust generated during grinding and prevent the dust from spreading in the work environment.
[0033] In view of this specification, further modifications and alternative embodiments of various aspects of the invention will be apparent to those skilled in the art. Therefore, this description should be interpreted as illustrative only. The configurations and arrangements shown in the various exemplary embodiments are merely illustrative. Although only some embodiments have been described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportions of various elements, values of parameters, mounting arrangements, use of materials, color, orientation, etc.) can be made without substantially departing from the novel teachings and advantages described herein. Some elements shown as integrally formed may be constructed from multiple parts or elements, the positions of elements may be reversed or otherwise changed, and the nature or number or position of discrete elements may be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm, or method steps may be changed or reordered. Other substitutions, modifications, alterations, and omissions may be made to the design, operating conditions, and arrangements of the various exemplary embodiments without departing from the scope of the invention.
[0034] Although the present application describes specific combinations of features in the appended claims, various embodiments of the invention relate to any combination of any features described herein, whether or not such combinations are currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.
[0035] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the accompanying drawings, are drawn to scale. Actual measurements in the drawings will disclose the relative dimensions, angles, and scales of the various exemplary embodiments. The various exemplary embodiments extend to a wide range around absolute and relative dimensions, angles, and scales that can be determined from the accompanying drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the accompanying drawings. Furthermore, actual dimensions not explicitly stated in this specification can be determined by combining the scales of the dimensions measured in the accompanying drawings with the explicit dimensions stated in this specification.
Claims
1. A long-handled grinder, comprising a main housing, a drive unit disposed within the main housing, a grinding unit driven by the drive unit, a support housing rotatably connected to the main housing, a flexible hose connecting the main housing and the support housing, and a connecting rod connecting the support housing, wherein the main housing, the flexible hose, the support housing, and the connecting rod together form a first dust discharge channel, the first dust discharge channel being connected to the grinding unit and including a first dust discharge port, characterized in that, The long-handled grinder also includes an extension rod, which forms a second dust discharge channel. The second dust discharge channel includes a dust discharge inlet and a second dust discharge outlet. The extension rod is detachably connected to the connecting rod to enable the dust discharge inlet to communicate with and disconnect from the first dust discharge outlet. The long-handled grinder includes a first mating part located at a first dust discharge port and a second mating part located at a second dust discharge port. The first mating part and the second mating part include the same mating features and are configured to connect the long-handled grinder to a dust collection device.
2. The long-handled grinder according to claim 1, characterized in that: The long-handled grinder includes a first handle and a second handle, the first handle being formed in the support housing, and the second handle being located outside the connecting rod and adjacent to the first dust outlet.
3. The long-handled grinder according to claim 2, characterized in that: The first mating part is integrally connected to the second handle.
4. The long-handled polisher according to claim 3, characterized in that: The extension rod includes a third handle, which is sleeved on the end of the extension rod away from the second handle, and the second mating part is integrally connected to the third handle.
5. The long-handled grinder according to claim 1, characterized in that: The fitting feature includes a snap-fit portion that engages with the dust collection device.
6. The long-handled grinder according to claim 5, characterized in that: The fitting feature also includes a positioning part that aligns with the dust collection device.
7. The long-handled grinder according to claim 6, characterized in that: The buckle portion and the positioning portion are arranged circumferentially along the first mating portion.
8. A polishing system, comprising a dust collection device and a long-handled polisher as described in any one of claims 1 to 7.
9. The polishing system according to claim 8, characterized in that: The dust collection device includes a dust collection pipe and a connector. The connector connects the dust collection pipe to a first mating part or a second mating part. The connector includes an elastic arm that is fastened to the first mating part or the second mating part.
10. The polishing system according to claim 9, characterized in that: The dust collection device also includes a limiter, which has an operable first state and a second state. In the first state, the limiter restricts the elastic arm from undergoing elastic deformation; in the second state, the limiter allows the elastic arm to undergo elastic deformation.