Electric grinder with quick detachable grinding head

Abstract

This utility model discloses an electric grinder with a quick-release grinding head, belonging to the field of electric grinder technology. The utility model includes a main body with a handheld part installed at the rear end; an output shaft installed at the front end of the main body; a fixed disc, which is circular, is snapped onto the output shaft; a quick-release assembly is installed on the fixed disc, and a grinding head, which is arc-shaped, is mounted on the quick-release assembly. When using the electric grinder, the fixed disc is snapped onto the output shaft, and then the grinding head is attached using the quick-release assembly. The operator holds the handheld part and drives the main body to rotate the output shaft, which in turn causes the quick-release assembly to rotate the grinding head. During the rotation of the grinding head, the surface of the object can be ground. The quick-release assembly makes changing the grinding head easy and quick, improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electric grinder technology, and in particular relates to an electric grinder with a quick-release grinding head. Background Technology

[0002] An electric grinder is a common power tool, mainly composed of a motor, transmission mechanism, grinding head or cutting attachment. Functionally, electric grinders have multiple uses. On the one hand, they can be used to grind various materials, such as removing burrs and rust from the surface of metal materials to make the surface smooth and flat; for wood, they can finely grind its edges to obtain a rounded feel, or perform finishing sanding on the surface of wood to enhance its texture. On the other hand, electric grinders can also be used as small cutting tools. By installing appropriate cutting discs, they can cut some thinner materials such as plastics and soft metals with relatively high precision according to the required shape and size.

[0003] Current electric grinders are generally equipped with a grinding housing, which consists of an upper shell and a lower shell fastened together by bolts. When it is necessary to replace the grinding head, the bolts need to be removed with the help of tools such as screwdrivers to open the housing for maintenance. However, this maintenance method relies on external tools and is somewhat inconvenient during operation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides: an electric grinder with a quick-release grinding head, including a main body, and a hand-held part is installed at the rear end of the main body;

[0005] An output shaft is mounted on the front end of the main body;

[0006] A circular fixing disc is snapped onto the output shaft.

[0007] The fixed plate is equipped with a quick-release assembly, and the quick-release assembly is equipped with a grinding head, which is arc-shaped.

[0008] As a preferred embodiment of the present invention, the quick-release assembly includes a first fixing block installed on the fixing plate;

[0009] The first fixing block and the fixing plate have two first threaded holes, and screws are threadedly connected to the first threaded holes;

[0010] Two first channels are formed within the first fixed block.

[0011] As a preferred embodiment of the present invention, each of the first channels is slidably connected with a first driving block;

[0012] Limiting rods are installed on each of the first driving blocks;

[0013] The two ends of the limiting rod pass through the first fixing block, and the first connecting rod is installed on the back of the first driving block;

[0014] A first contact plate and a second contact plate are respectively installed at one end of the two first connecting rods.

[0015] As a preferred embodiment of the present invention, a first spring is installed on the side of the first driving block away from the first connecting rod;

[0016] The other end of the first spring is fixedly connected to the inner wall of the first channel.

[0017] As a preferred embodiment of this utility model, a second fixing block is installed and engaged on the upper side of the first fixing block;

[0018] The grinding head is mounted on the second fixed block, and the two side walls of the second fixed block are provided with limiting grooves that can contact the limiting rod.

[0019] As a preferred embodiment of the present invention, the main body is fitted with a placement shell, and the placement shell has multiple placement cavities.

[0020] As a preferred embodiment of this invention, the placement shell is slidably connected with a plurality of baffles corresponding to the placement cavity, and the baffles are rectangular.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] When using an electric grinder, attach the fixed plate to the output shaft, then use the quick-release assembly to install the grinding head. The operator holds the handle and drives the main body to rotate the output shaft. The quick-release assembly then drives the grinding head to rotate. During the rotation of the grinding head, the surface of the object can be polished. The quick-release assembly makes changing the grinding head easy and quick, improving work efficiency. Attached Figure Description

[0023] Figure 1 This is a first-view perspective three-dimensional structural diagram of an electric grinder with a quick-release grinding head provided in an embodiment of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of an electric grinder with a quick-release grinding head, omitting the main body and handheld part, according to an embodiment of the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the second fixing block of the electric grinder with a quick-release grinding head provided in this embodiment of the utility model, which is to be fitted with the first fixing block;

[0026] Figure 4 This is an exploded view of the internal structure of the electric grinder with a quick-release grinding head provided in this embodiment of the utility model;

[0027] Figure 5This is a schematic diagram of the internal cross-sectional planar structure of an electric grinder with a quick-release grinding head provided in this embodiment of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the housing for a quick-release grinding head provided in an embodiment of the present invention.

[0029] In the diagram: 1. Main body; 2. Handheld part; 3. Output shaft; 4. Fixed plate; 5. Grinding head; 6. First fixing block; 7. First threaded hole; 8. Screw; 9. First channel; 10. First drive block; 11. Limiting rod; 12. First connecting rod; 13. First contact plate; 14. Second contact plate; 15. First spring; 16. Second fixing block; 17. Limiting groove; 18. Placement shell; 19. Placement cavity; 20. Stop. Detailed Implementation

[0030] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0031] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] Please see Figures 1 to 6 The present invention provides an electric grinder with a quick-release grinding head, comprising a main body 1, a handheld part 2 installed at the rear end of the main body 1, an output shaft 3 installed at the front end of the main body 1, a fixed plate 4 snapped onto the output shaft 3, the fixed plate 4 being circular, a quick-release assembly installed on the fixed plate 4, and a grinding head 5 being arc-shaped installed on the quick-release assembly.

[0033] Using the above solution: When the electric grinder is needed, the fixed plate 4 is snapped onto the output shaft 3, and then the grinding head 5 is installed using the quick-release assembly. The operator holds the holding part 2 and drives the main body 1 to rotate the output shaft 3. The quick-release assembly then drives the grinding head 5 to rotate. During the rotation of the grinding head 5, the grinding head 5 can grind the surface of the object. The quick-release assembly makes the process of changing the grinding head 5 simple and quick, thereby improving work efficiency.

[0034] Furthermore, the quick-release assembly includes a first fixing block 6 mounted on the fixing plate 4; the first fixing block 6 and the fixing plate 4 have two first threaded holes 7, and screws 8 are threadedly connected to the first threaded holes 7; the first fixing block 6 has two first channels 9.

[0035] Furthermore, each of the first channels 9 is slidably connected with a first driving block 10; each of the first driving blocks 10 is equipped with a limiting rod 11; both ends of the limiting rod 11 pass through the first fixing block 6, and a first connecting rod 12 is installed on the back of the first driving block 10; a first contact plate 13 and a second contact plate 14 are respectively installed on one end of the two first connecting rods 12.

[0036] Furthermore, a first spring 15 is installed on the side of the first drive block 10 away from the first connecting rod 12; the other end of the first spring 15 is fixedly connected to the inner wall of the first channel 9.

[0037] Furthermore, a second fixing block 16 is installed and engaged on the upper side of the first fixing block 6; the grinding head 5 is installed on the second fixing block 16, and the two side walls of the second fixing block 16 are provided with limiting grooves 17 that can contact the limiting rod 11.

[0038] Furthermore, in use, the operator places the first fixing block 6 on the fixing plate 4, and then screws the screw 8 into the first threaded hole 7 to fix the first fixing block 6. After the first fixing block 6 is installed, the operator pushes the first contact plate 13 and the second contact plate 14 to move synchronously. During the movement, the first contact plate 13 and the second contact plate 14 will move closer to each other, and at the same time, the first connecting rod 12 will drive the first driving block 10 on it to move synchronously in the first channel 9. During the movement, the first driving block 10 will compress the first... After the first driving block 10 moves to the preset position, the spring 15 engages the second fixing block 16 with the first fixing block 6, so that the upper surface of the first fixing block 6 contacts the lower surface of the second fixing block 16. Then, the first contact plate 13 and the second contact plate 14 are released, and the elasticity of the two first springs 15 pushes the first driving block 10 to move in the opposite direction, so that the first contact plate 13 and the second contact plate 14 move away from each other. After the first fixing block 6 moves to the preset position, the limiting rod 11 on it will abut against the inner wall of the limiting groove 17, thereby fixing the second fixing block 16.

[0039] It should be noted that when it is necessary to disassemble the grinding head 5, simply reverse the operation according to the above principle.

[0040] The above scheme is adopted: a placement shell 18 is fitted on the main body 1, and multiple placement cavities 19 are opened in the placement shell 18.

[0041] Furthermore, a plurality of baffles 20 corresponding to the placement cavity 19 are slidably connected to the placement shell 18, and the baffles 20 are rectangular.

[0042] Using the above solution: When it is necessary to store or take out the grinding head 5, the operator opens the corresponding door 20 to expose the placement cavity 19, so that the grinding head 5 can be placed in the placement cavity 19 or taken out of the placement cavity 19.

[0043] It should be noted that after the grinding head 5 is placed or removed, the stop gate 20 can be reset.

[0044] The working principle of this utility model:

[0045] When the electric grinder is needed, the operator attaches the fixed plate 4 to the output shaft 3, places the first fixing block 6 on the fixed plate 4, and then screws the screw 8 into the first threaded hole 7 to fix the first fixing block 6. After the first fixing block 6 is installed, the operator pushes the first contact plate 13 and the second contact plate 14 to move synchronously. During the movement, the first contact plate 13 and the second contact plate 14 will move closer to each other, and at the same time, the first connecting rod 12 will drive the first driving block 10 on it to move synchronously in the first channel 9. During the movement, the first driving block 10 will compress the first spring 15. After the first driving block 10 moves to the preset position, the second... The fixing block 16 engages with the first fixing block 6, so that the upper surface of the first fixing block 6 contacts the lower surface of the second fixing block 16. Then, the first contact plate 13 and the second contact plate 14 are released, and the elasticity of the two first springs 15 pushes the first drive block 10 to move in the opposite direction, so that the first contact plate 13 and the second contact plate 14 move away from each other. After the first fixing block 6 moves to the preset position, the limiting rod 11 on it will abut against the inner wall of the limiting groove 17, thereby fixing the second fixing block 16. Then, the operator holds the holding part 2 and drives the main body 1 to drive the output shaft 3 to rotate, which in turn drives the grinding head 5 to rotate. During the rotation of the grinding head 5, the grinding head 5 can perform grinding treatment on the surface of the object.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric grinder with a quick-release grinding head, characterized in that: Includes a main body (1), and a handheld part (2) is installed at the rear end of the main body (1); An output shaft (3) is installed at the front end of the main body (1); A fixed disk (4) is snapped onto the output shaft (3), and the fixed disk (4) is circular; A quick-release assembly is installed on the fixed plate (4), and a grinding head (5) is installed on the quick-release assembly. The grinding head (5) is arc-shaped.

2. The electric grinder with a quick-release grinding head as described in claim 1, characterized in that: The quick-release assembly includes a first fixing block (6) mounted on the fixing plate (4); The first fixing block (6) and the fixing plate (4) have two first threaded holes (7), and screws (8) are threadedly connected in the first threaded holes (7); Two first channels (9) are opened in the first fixed block (6).

3. The electric grinder with a quick-release grinding head as described in claim 2, characterized in that: Each of the first channels (9) is slidably connected to a first driving block (10); Limit rods (11) are installed on each of the first drive blocks (10); The two ends of the limiting rod (11) pass through the first fixing block (6), and the first connecting rod (12) is installed on the back of the first driving block (10); One end of each of the two first connecting rods (12) is respectively equipped with a first contact plate (13) and a second contact plate (14).

4. The electric grinder with a quick-release grinding head as described in claim 3, characterized in that: A first spring (15) is installed on the side of the first drive block (10) away from the first connecting rod (12); The other end of the first spring (15) is fixedly connected to the inner wall of the first channel (9).

5. The electric grinder with a quick-release grinding head as described in claim 4, characterized in that: A second fixing block (16) is installed and engaged on the upper side of the first fixing block (6); The grinding head (5) is mounted on the second fixing block (16), and the two side walls of the second fixing block (16) are provided with limiting grooves (17) that can contact the limiting rod (11).

6. The electric grinder with a quick-release grinding head as described in claim 1, characterized in that: The main body (1) is fitted with a placement shell (18), and the placement shell (18) has multiple placement cavities (19).

7. The electric grinder with a quick-release grinding head as described in claim 6, characterized in that: The placement shell (18) is slidably connected with a plurality of baffles (20) corresponding to the placement cavity (19), and the baffles (20) are rectangular.

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