Wall surface grinding machine

Abstract

A wall face grinding machine comprises a driving motor, a grinding head and a machine shell, the wall face grinding machine comprises a first dust discharging pipe, the machine shell comprises a dust outlet pipe, the dust outlet pipe is sleeved with the first dust discharging pipe, the first dust discharging pipe is detachably connected with the dust outlet pipe, and the wall face grinding machine comprises a locking device. The machine shell comprises at least one protruding rib, the at least one protruding rib is matched with the first dust discharging pipe through the locking device so as to prevent dust from leaking out of the dust discharging pipe, and the first dust discharging pipe is a flexible hose.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a wall grinding machine. Background Art

[0002] In recent years, most grinders on the market have consisted of a handheld handle, a grinding head, a drive motor, and a dust exhaust hose. During use, users hold the rear end of the handheld handle to grind the wall. The dust exhaust hose is connected to the machine body, and a sealing ring is installed between the machine body and the dust exhaust hose to ensure a seal between the two. However, the sealing ring is prone to aging, deformation, displacement, or loss, resulting in widespread and serious dust leakage at the connection between the machine body and the dust exhaust hose. Furthermore, as vibrations during machine operation cause the dust exhaust hose connection to loosen, the probability of dust leakage at the dust exhaust port of the machine housing increases, significantly affecting work efficiency and causing significant trouble for users. Utility Model Content

[0003] The purpose of this application is to overcome the shortcomings of the existing technology, eliminate the sealing ring between the dust exhaust hose and the machine body, and use a labyrinth structure instead, to provide a wall sander that is less likely to leak dust. This utility model is achieved through the following technical solutions:

[0004] A wall grinder includes a drive motor, a grinding head, and a casing. The wall grinder includes a first dust exhaust pipe, the casing includes a dust outlet pipe, the first dust exhaust pipe is sleeved on the dust outlet pipe, and the first dust exhaust pipe is detachably connected to the dust outlet pipe. The wall grinder includes a locking device, the casing includes at least one rib, and the at least one rib cooperates with the first dust exhaust pipe through the locking device to prevent dust from leaking from the dust outlet pipe. The first dust exhaust pipe is a flexible hose, which makes it more convenient for the operator to work.

[0005] Furthermore, the at least one convex rib includes a plurality of convex ribs, and the plurality of convex ribs are arranged in sequence along the extension direction of the dust outlet pipe body.

[0006] Furthermore, the locking device includes an annular locking piece, which is sleeved on the first dust exhaust pipe and the dust outlet pipe and locks the first dust exhaust pipe and the dust outlet pipe. The first dust exhaust pipe presses the rib to prevent dust from leaking from the first dust exhaust pipe.

[0007] Furthermore, the housing includes a main housing and a handheld rod, the dust exhaust pipe is located in the main housing, the handheld rod includes a first end, and the first dust exhaust pipe connects the main housing and the first end.

[0008] Furthermore, the wall grinder also includes a second dust exhaust pipe and a connecting assembly, the hand-held rod includes a second end, the connecting assembly connects the second dust exhaust pipe and the second end together, and the connecting assembly includes a first connecting member and a second connecting member that cooperate with each other, the first connecting member is connected to the second end, and the second connecting member is connected to the second dust exhaust pipe.

[0009] Furthermore, the first connecting member includes a first base and a first protrusion and a second protrusion extending from the first base, a first receiving groove is formed between the first protrusion and the second protrusion, the second connecting member includes a second base and a third protrusion and a fourth protrusion extending from the second base, a second receiving groove is formed between the third protrusion and the fourth protrusion, the second protrusion is received in the second receiving groove, the third protrusion is received in the first receiving groove, and the fourth protrusion is located on the side of the second protrusion facing away from the first protrusion.

[0010] Furthermore, the first dust exhaust pipe and the hand-held rod are locked at the first end by the locking device.

[0011] Furthermore, the handheld rod includes a main rod, an extension rod and a connecting device connecting the main rod and the extension rod, the main rod includes the first end, and the extension rod includes the second end.

[0012] Furthermore, the wall grinder includes a support portion, which is provided at the second end portion. The support portion is configured to protect the hose so that the wall grinder is not easily bumped and damaged by the second dust exhaust pipe when placed.

[0013] The connection between the main housing and the first dust exhaust pipe of the wall grinder adopts a labyrinth seal, and the connection between the second end of the hand-held rod and the second dust exhaust pipe also adopts a labyrinth seal. Not only is there no risk of aging, damage, or loss of the sealing ring, but the connection between the main housing and the first dust exhaust pipe is locked by a locking device, the structure is not easy to loosen, the seal is very reliable, making operation more convenient and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a wall grinding machine according to an embodiment of the present application.

[0015] Figure 2 for Figure 1 A partial cutaway view of a wall sander is shown.

[0016] Figure 3 for Figure 2 An enlarged cross-sectional view of a wall sander at point A is shown.

[0017] Figure 4 for Figure 2 An enlarged cross-sectional view of the wall sander at point B is shown. DETAILED DESCRIPTION

[0018] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0019] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as those of ordinary skill in the art to which this invention belongs. The terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but rather indicate the presence of at least one. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are for convenience only and are not intended to limit a position or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0020] Combine Figures 1 to 4 A wall grinder 100 includes a drive motor 101, a grinding head 102, and a casing 103. The wall grinder 100 includes a first dust exhaust pipe 1, the casing 103 includes a dust outlet pipe 2, the first dust exhaust pipe 1 is sleeved on the dust outlet pipe 2, and the first dust exhaust pipe 1 is detachably connected to the dust outlet pipe 2. The wall grinder 100 includes a locking device 3, and the casing 103 includes at least one convex rib 4. The at least one convex rib 4 cooperates with the first dust exhaust pipe 1 through the locking device 3 to prevent dust from leaking from the dust outlet pipe 2.

[0021] Preferably, the at least one rib 4 includes a plurality of ribs 4, and the plurality of ribs 4 are sequentially arranged along the extension direction of the main body of the dust discharge pipe 2. The first dust discharge pipe 1 is a flexible hose, which makes the operator more convenient when working.

[0022] Preferably, the locking device 3 includes an annular locking piece, which is sleeved on the first dust exhaust pipe 1 and the dust outlet pipe 2 and locks the first dust exhaust pipe 1 and the dust outlet pipe 2. The first dust exhaust pipe 1 presses the convex rib 4 to prevent dust from leaking from the first dust exhaust pipe 1.

[0023] The housing 103 includes a main housing 104 and a handheld handle 105. The dust exhaust pipe 2 is located in the main housing 104. The handheld handle 105 includes a first end 5. The first dust exhaust pipe 1 connects the main housing 104 and the first end 5. The wall sander 100 also includes a second dust exhaust pipe 6 and a connecting assembly 7. The handheld handle 105 includes a second end 8. The connecting assembly 7 connects the second dust exhaust pipe 6 and the second end 8 together. The connecting assembly 7 includes a first connecting member 71 and a second connecting member 72 that cooperate with each other. The first connecting member 71 is connected to the second end 8, and the second connecting member 72 is connected to the second dust exhaust pipe 6.

[0024] Preferably, the first connecting member 71 includes a first base 711 and a first protrusion 712 and a second protrusion 713 extending from the first base 711, a first receiving groove 714 is formed between the first protrusion 712 and the second protrusion 713, the second connecting member 72 includes a second base 721 and a third protrusion 722 and a fourth protrusion 723 extending from the second base 721, a second receiving groove 724 is formed between the third protrusion 722 and the fourth protrusion 723, the second protrusion 713 is received in the second receiving groove 724, the third protrusion 722 is received in the first receiving groove 714, and the fourth protrusion 723 is located on the side of the second protrusion 713 away from the first protrusion 712, forming a maze structure.

[0025] The first dust exhaust pipe 1 and the handheld rod 105 are locked at the first end 5 by the locking device 3. The handheld rod 105 includes a main rod 1051, an extension rod 1052, and a connecting device 9 connecting the main rod 1051 and the extension rod 1052. The main rod 1051 includes the first end 5, and the extension rod 1052 includes the second end 8.

[0026] Preferably, the wall grinder 100 includes a support portion 106, which is provided at the second end portion 8. The support portion 106 is configured to protect the second dust exhaust pipe 6, so that the wall grinder 100 is not easily bumped and damaged when placed.

[0027] A labyrinth seal is adopted at the connection between the main housing 104 of the wall grinder 100 and the first dust exhaust pipe 1, and a labyrinth seal is also adopted at the connection between the second end portion 8 of the hand-held rod 105 and the second dust exhaust pipe 6. Not only is there no risk of aging, damage, or loss of the sealing ring, but the connection between the main housing 104 and the first dust exhaust pipe 1 is locked by a locking device 3, the structure is not easy to loosen, the seal is very reliable, the operation is more convenient, and the work efficiency is greatly improved.

[0028] It should be understood that the drawings illustrate exemplary embodiments in detail, and it should be understood that the present application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered as limiting.

[0029] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be obvious to those skilled in the art. Therefore, this description should be interpreted as being illustrative only. The configurations and arrangements shown in the various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (for example, variations in the size, dimensions, structure, shape and proportion of various elements, the value of parameters, the installation arrangement, the use of materials, colors, orientations, etc.) can be made without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as being integrally formed can be constructed from multiple parts or elements, can be reversed or otherwise changed in the position of the elements, and the nature or number or position of discrete elements can be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm or method steps can be changed or reordered. Other replacements, modifications, changes and omissions can also be made to the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present invention.

[0030] Although the present application recites particular combinations of features in the appended claims, various embodiments of the present invention relate to any combination of any of the 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.

[0031] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the accompanying drawings are drawn to scale. Actual measurements of the accompanying drawings would disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges encompassing absolute and relative dimensions, angles, and ratios that can be determined from the accompanying drawings. Various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the accompanying drawings. In addition, actual dimensions not expressly stated in this specification can be determined by combining the ratios of the dimensions measured in the accompanying drawings with the explicit dimensions stated in this specification.

Claims

1. A wall grinder, comprising a drive motor, a grinding head, and a housing. The wall grinder comprises a first dust exhaust pipe, the housing comprises a dust outlet pipe, the first dust exhaust pipe is sleeved on the dust outlet pipe, and the first dust exhaust pipe is detachably connected to the dust outlet pipe, characterized in that: The wall grinder includes a locking device, and the housing includes at least one rib. The at least one rib cooperates with the first dust exhaust pipe through the locking device to prevent dust from leaking from the dust exhaust pipe. The first dust exhaust pipe is a flexible hose.

2. The wall grinding machine according to claim 1, characterized in that: The at least one convex rib includes a plurality of convex ribs, and the plurality of convex ribs are arranged in sequence along the extension direction of the dust outlet pipe body.

3. The wall grinding machine according to claim 2, characterized in that: The locking device includes an annular locking piece, which is sleeved on the first dust exhaust pipe and the dust outlet pipe and locks the first dust exhaust pipe and the dust outlet pipe.

4. The wall grinding machine according to claim 3, characterized in that: The housing includes a main housing and a handheld rod, the dust exhaust pipe is located in the main housing, the handheld rod includes a first end, and the first dust exhaust pipe connects the main housing and the first end.

5. The wall grinding machine according to claim 4, characterized in that: The wall grinder also includes a second dust exhaust pipe and a connecting assembly. The hand-held rod includes a second end. The connecting assembly connects the second dust exhaust pipe and the second end together. The connecting assembly includes a first connecting member and a second connecting member that cooperate with each other. The first connecting member is connected to the second end, and the second connecting member is connected to the second dust exhaust pipe.

6. The wall grinding machine according to claim 5, characterized in that: The first connecting member includes a first base and a first protrusion and a second protrusion extending from the first base, a first receiving groove is formed between the first protrusion and the second protrusion, the second connecting member includes a second base and a third protrusion and a fourth protrusion extending from the second base, a second receiving groove is formed between the third protrusion and the fourth protrusion, the second protrusion is received in the second receiving groove, the third protrusion is received in the first receiving groove, and the fourth protrusion is located on the side of the second protrusion facing away from the first protrusion.

7. The wall grinding machine according to claim 6, characterized in that: The first dust exhaust pipe and the hand-held rod are locked by the locking device.

8. The wall grinding machine according to claim 7, characterized in that: The handheld rod includes a main rod, an extension rod and a connecting device connecting the main rod and the extension rod. The main rod includes the first end portion, and the extension rod includes the second end portion.

9. The wall grinding machine according to claim 7, characterized in that: The wall grinding machine includes a supporting portion, and the supporting portion is arranged at the second end portion.

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