Extension rod dismounting and mounting structure and long-handle wall surface grinding machine

Abstract

The utility model relates to a dismounting and mounting structure for a long-handle wall surface polisher and an extension rod. The dismounting and mounting structure comprises a main body pipe provided with an assembly hole, the extension rod detachably mounted on the main body pipe, and a sheath. The extension rod comprises a pipe body part and a mounting part, the mounting part comprises a limiting sleeve and a clamping jaw, the clamping jaw is arranged on the periphery of the limiting sleeve, the clamping jaw is provided with a buckling block, and the main body pipe is inserted between the limiting sleeve and the clamping jaw; the sheath sleeves the periphery of the pipe body part of the extension rod and is provided with a first position and a second position which are opposite to the clamping jaw; when the sheath is located at the first position, the clamping jaw is prevented from moving, the buckling block of the clamping jaw extends into the assembly hole of the main body pipe, and the extension rod is connected and locked with the main body pipe; and when the sheath is at the second position, the claw is allowed to move, so that the extension rod is separated from the main body pipe. According to the disassembly and assembly structure of the extension rod, the extension rod can be installed and connected to the main body pipe without other parts, and the structure is simple. The sheath can also prevent the jack catch from being triggered by mistake and prevent the extension rod from accidentally separating from the main body pipe.

Description

Technical Field

[0001] The present application relates to a wall grinder, and in particular to a long-handled wall grinder and a disassembly and assembly structure of an extension rod. Background Art

[0002] Wall grinders are used to grind and polish walls. A long handle is required for grinding high walls. Removable extension rods are usually installed to flexibly adjust the length of the wall grinder and reduce the weight of the machine when the extension rod is not needed. However, the extension rods of existing long-handled grinders are folded and flipped, which is inconvenient to disassemble. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a disassembly and assembly structure of an extension rod, which can quickly install and disassemble the extension rod, and the installation structure is stable and effective.

[0004] The disassembly and assembly structure of the extension rod includes:

[0005] A main body tube, wherein the main body tube is provided with an assembly hole;

[0006] An extension rod, the extension rod is detachably mounted to the main body tube, the extension rod comprises a tube body portion and a mounting portion, the mounting portion comprises a limiting sleeve and a claw, the claw is arranged on the outer periphery of the limiting sleeve, the claw has a buckle block, and the main body tube is inserted between the limiting sleeve and the claw;

[0007] A sheath, the sheath is sleeved on the outer circumference of the tube body of the extension rod, the sheath having a first position and a second position relative to the claw;

[0008] When the sheath is in the first position, the claw is prevented from moving, the snap block of the claw extends into the assembly hole of the main tube, and the extension rod is connected and locked with the main tube; when the sheath is in the second position, the claw is allowed to move, the snap block of the claw disengages from the assembly hole of the main tube, and the extension rod is separated from the main tube.

[0009] Further, the mounting portion includes two symmetrical claws, each of which includes an acting member and a connecting member, the connecting member connects the limiting sleeve and the acting member, the acting member is bent at one end close to the limiting sleeve to form the buckle block, and the other end of the acting member forms a pressing portion, the sleeve has a protruding portion, and the protruding portion is located between the pressing portion and the tube body portion.

[0010] Furthermore, the pressing portion is tilted along the extending direction of the tube body, and the thickness of the raised portion of the sheath gradually increases along the extending direction of the tube body.

[0011] Furthermore, the sheath is threadedly connected to the tube body of the extension rod.

[0012] Furthermore, an inner wall of the sheath near one end of the connector is provided with an internal thread, an outer connecting tube is provided at intervals on the outer periphery of the tube body of the extension rod, the outer connecting tube is provided with an external thread, and the sheath is connected to the outer connecting tube by threads.

[0013] Furthermore, an outer tube is inserted between the tube body and the outer connecting tube.

[0014] Furthermore, the length of the sheath in the axial direction exceeds that of the tube body, and surrounds at least a portion of the outer tube.

[0015] Furthermore, it also includes a dustproof inner ring, which is arranged on the inner ring of the main body tube.

[0016] Furthermore, one side of the dustproof inner ring is constructed as a double wall, the double wall is spaced to form an annular groove, a clamping ring is provided on the inner wall of the main tube, the clamping ring is embedded in the annular groove, and the other side of the dustproof inner ring is adjacent to the limiting sleeve.

[0017] Furthermore, the utility model also relates to a long-handled wall grinder, including the disassembly and assembly structure of the extension rod as described above.

[0018] Beneficial effects:

[0019] The extension rod includes a tube body and a mounting portion. The mounting portion of the extension rod can directly mount and connect the tube body to the main tube without the need for other parts. Therefore, the disassembly and assembly structure of the extension rod is simple and easy to operate. In addition, the disassembly and assembly structure of the extension rod also includes a sheath to prevent the claws of the extension rod from being accidentally triggered, causing the extension rod to accidentally detach from the main tube. The sheath can also ensure the stability of the assembly of the extension rod and the main tube, and will not shake left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the disassembly and assembly structure of the extension rod in the embodiment of the utility model.

[0021] Figure 2 It is a cross-sectional view of the disassembly and assembly structure of the extension rod in the embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of an extension rod in an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of a wall grinding machine in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0025] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" 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" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] The present embodiment relates to a disassembly and assembly structure of an extension rod, and in particular to a disassembly and assembly structure of an extension rod used in a wall grinder.

[0027] like Figure 4 The wall grinding machine 100 comprises a housing, a grinding disc rotatably mounted on the housing, a motor driving the grinding disc to rotate, and a handle connected to the housing. The wall grinding machine also comprises a disassembly structure of an extension rod, which can be mounted on the handle, thereby adjusting the length of the handle.

[0028] like Figure 1 and 2 As shown, the disassembly and assembly structure of the extension rod 2 includes a main body tube 1 , the extension rod 2 detachably mounted to the main body tube 1 , and a sheath 3 sleeved on the extension rod 2 .

[0029] The main body pipe 1 is provided with a fitting hole 10 .

[0030] The extension rod 2 includes a tube body 21 and a mounting portion 22, wherein the mounting portion 22 is used to detachably connect the tube body 21 to the main tube 1. The mounting portion 22 includes a limiting sleeve 221 and a claw 222, wherein the claw 222 is arranged on the outer periphery of the limiting sleeve 221, and the claw 222 has a buckle block 222c, and the buckle block 222c extends radially inwardly of the extension rod.

[0031] The main body tube 1 is sleeved on the outer periphery of the limiting sleeve 221 of the extension rod 2 , that is, the main body tube 1 is inserted between the limiting sleeve 221 and the clamping claw 222 .

[0032] The disassembly and assembly structure of the extension rod also includes a sheath 3, which is sleeved on the outer circumference of the tube body 21 of the extension rod 2. The sheath 3 has a first position and a second position relative to the claw 222. When the sheath 3 is in the first position, the claw 222 can be prevented from moving, and the buckle block 222c of the claw 222 extends into the assembly hole 10 of the main tube 1, so that the extension rod 2 and the main tube 1 are installed and locked. When the sheath 3 is in the second position, the claw 222 is allowed to move, and the buckle block 222c of the claw 222 can be separated from the assembly hole 10 of the main tube 1, and the extension rod 2 is separated from the main tube 1.

[0033] The extension rod 2 includes a tube body 21 and a mounting portion 22. The mounting portion 22 of the extension rod 1 can directly mount and connect the tube body 21 to the main tube 1 without the aid of other parts, so the disassembly structure of the extension rod is simple and easy to operate. In addition, the disassembly structure of the extension rod also includes a sheath 3, which is used to prevent the claw 222 of the extension rod 1 from being accidentally triggered, causing the extension rod 2 to accidentally detach from the main tube 1. The sheath 3 can also ensure the stability of the assembly of the extension rod 2 and the main tube 1, and will not shake left and right.

[0034] Specific, combined Figure 3 As shown, the mounting portion 22 includes two symmetrical claws 222, and the claws 222 include an acting member 222a and a connecting member 222b. The connecting member 222b connects the limiting sleeve 221 and the acting member 222a. The acting member 222a is bent at one end close to the limiting sleeve 221 to form the buckle block 222c, and the other end of the acting member 222a forms a pressing portion 222d.

[0035] The sheath 3 has a protrusion 31, and the protrusion 31 is located between the pressing portion 222d and the tube body 21. The protrusion 31 of the sheath 3 is used to prevent the pressing portion 222d of the claw 222 from being triggered and pressed by mistake, causing the extension rod 2 to be separated from the main tube 1.

[0036] Preferably, for more comfortable operation, the pressing portion 222d is tilted along the extension direction of the tube body 21, and the thickness of the raised portion 31 of the sheath 3 gradually increases along the extension direction of the tube body 21 to prevent the claw 222 from being accidentally triggered.

[0037] The sheath 3 is connected to the tube body 21 of the extension rod 2 by threads. In this embodiment, the inner wall of the sheath 3 close to the connecting piece 222b is provided with internal threads, and the outer periphery of the tube body 21 of the extension rod 2 is provided with external connection pipes 23 at intervals, and the external connection pipes 23 are provided with external threads, and the sheath 3 is connected to the external connection pipes 23 by threads.

[0038] Combination Figure 2 As shown, when installing the extension rod 2, first, the sleeve 3 is placed in the second position by loosening the thread, that is, there is a space between the protrusion 31 of the sleeve 3 and the pressing portion 222d of the claw 222. Then, press the pressing portion 222d of the claw 222 with two fingers, insert the main tube 1 between the limit sleeve 221 and the claw 222 of the extension rod 2, until the buckle block 222c of the claw 222 is aligned with the assembly hole 10 of the main tube 1, and then release the two fingers, so that the buckle block 222c of the claw 222 extends into the assembly hole 10 of the main tube 1. Finally, tighten the thread again to put the sleeve 3 in the first position, that is, the protrusion 31 of the sleeve 3 abuts against the pressing portion 222d of the claw 222 to prevent the movement of the claw 222, so as to achieve the locking of the extension rod 2 and the main tube 1. The cooperation between the raised portion 31 of the sheath 3 and the claw 222 can ensure the stability of the assembly of the buckle block 222c and the assembly hole 10 without shaking left and right.

[0039] When disassembling the extension rod 2, first, loosen the thread to put the sheath 3 in the second position, that is, there is space between the protrusion 31 of the sheath 3 and the pressing portion 222d of the claw 222. Then, press the pressing portion 222d of the claw 222 with two fingers to make the front end of the action member 222a tilt up, so that the buckle block 222c is separated from the assembly hole 10 of the main tube 1. Finally, pull the main tube 1 out of the extension rod 2 to achieve the disassembly of the extension rod 2 and the main tube 1. The extension rod 2 can be quickly installed with the main tube 1 by setting the claw 222, and the disassembly structure is simple and easy to operate. The disassembly structure also includes a sheath 3 to prevent the claw 222 from being accidentally triggered, causing the extension rod 2 to be separated from the main tube 1.

[0040] In this embodiment, the outer tube 5 is inserted between the tube body 21 of the extension rod 2 and the outer connecting tube.

[0041] The sheath 3 has a length in the axial direction that exceeds the tube body 21 , and surrounds at least a portion of the outer tube 5 .

[0042] In this embodiment, the disassembly and assembly structure of the extension rod 2 further includes a dustproof inner ring 4, which is arranged on the inner ring of the main body tube 1 for sealing and dustproofing.

[0043] One side of the dustproof inner ring 4 is constructed as a double wall, and the double wall is separated to form an annular groove. A clamping ring is provided on the inner wall of the main tube 1, and the clamping ring is embedded in the annular groove. The other side of the dustproof inner ring 4 is adjacent to the limiting sleeve 221.

[0044] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A disassembly and assembly structure of an extension rod, characterized in that: include: A main body tube, wherein the main body tube is provided with an assembly hole; An extension rod, the extension rod is detachably mounted to the main body tube, the extension rod comprises a tube body portion and a mounting portion, the mounting portion comprises a limiting sleeve and a claw, the claw is arranged on the outer periphery of the limiting sleeve, the claw has a buckle block, and the main body tube is inserted between the limiting sleeve and the claw; A sheath, the sheath is sleeved on the outer circumference of the tube body of the extension rod, the sheath having a first position and a second position relative to the claw; When the sheath is in the first position, the claw is prevented from moving, the snap block of the claw extends into the assembly hole of the main tube, and the extension rod is connected and locked with the main tube; when the sheath is in the second position, the claw is allowed to move, the snap block of the claw can be disengaged from the assembly hole of the main tube, and the extension rod is separated from the main tube.

2. The disassembly and assembly structure of the extension rod according to claim 1, characterized in that: The mounting portion includes two symmetrical claws, each of which includes an acting member and a connecting member, wherein the connecting member connects the limiting sleeve and the acting member, and the acting member is bent at one end close to the limiting sleeve to form the buckle block, and the other end of the acting member forms a pressing portion, and the sleeve has a protruding portion, which is located between the pressing portion and the tube body portion.

3. The disassembly and assembly structure of the extension rod according to claim 2, characterized in that: The pressing portion is tilted along the extending direction of the tube body, and the thickness of the raised portion of the sheath gradually increases along the extending direction of the tube body.

4. The disassembly and assembly structure of the extension rod according to claim 2, characterized in that: The sheath is threadedly connected to the tube body of the extension rod.

5. The disassembly and assembly structure of the extension rod according to claim 4, characterized in that: An inner wall of the sleeve near one end of the connector is provided with an internal thread, an outer connection tube is provided at intervals on the outer periphery of the tube body of the extension rod, the outer connection tube is provided with an external thread, and the sleeve is connected to the outer connection tube by threads.

6. The disassembly and assembly structure of the extension rod according to claim 5, characterized in that: An outer tube is inserted between the tube body and the outer connecting tube.

7. The disassembly and assembly structure of the extension rod according to claim 6, characterized in that: The sheath has a length in the axial direction exceeding that of the tube body and surrounds at least a portion of the outer tube.

8. The disassembly and assembly structure of the extension rod according to claim 1, characterized in that: It also includes a dustproof inner ring, which is arranged on the inner ring of the main body tube.

9. The disassembly and assembly structure of the extension rod according to claim 8, characterized in that: One side of the dustproof inner ring is constructed as a double wall, and the double wall is spaced to form an annular groove. A clamping ring is arranged on the inner wall of the main tube, and the clamping ring is embedded in the annular groove. The other side of the dustproof inner ring is adjacent to the limiting sleeve.

10. A long-handled wall grinding machine, characterized in that: The invention comprises a disassembly and assembly structure of an extension rod as claimed in any one of claims 1 to 9.

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