Electric equipment

Abstract

An electric device comprises a rod, a working head and a rotating assembly connecting the rod and the working head, the rotating assembly comprises a supporting arm, a rotating joint and a support, the supporting arm is rotatably installed on the rotating joint, the support is connected with the working head and comprises an arc-shaped groove, and the rotating joint is rotatably installed in the arc-shaped groove.

Description

Technical Field

[0001] The utility model relates to the field of electric equipment, in particular to an electric equipment. Background Art

[0002] With the development of the economy, power tools are chosen by more and more people. Power tools include a working head and a handle. In actual working scenarios, it is sometimes necessary to rotate the working head to switch between multiple working surfaces, such as grinders, electric drills, etc.

[0003] Taking the grinder as an example, the driving mechanism of a traditional grinder is usually horizontally arranged at the center above the grinding disc, which makes it difficult to switch the grinding disc between grinding walls and wall ceilings. Especially when grinding ceilings, a large angle needs to be formed between the grinder head and the handle, which is not smooth and flexible enough. Sometimes tools are needed to switch them, resulting in low grinding efficiency, reducing the user experience, causing great trouble to users, and is not conducive to the promotion and application of grinders in the market. Utility Model Content

[0004] The purpose of this application is to overcome the deficiencies in the prior art and provide an electric device with an ingenious structure that can flexibly switch between a variety of working surfaces, saving time and effort, and tool-free switching, thereby improving the grinding efficiency and enhancing the user's grinding experience, which is conducive to the promotion and application of the above electric device in the market. The utility model is achieved through the following technical solutions:

[0005] An electric device includes a rod, a working head and a rotating assembly connecting the rod and the working head, the rotating assembly includes a support arm, a rotating joint and a bracket, the support arm is rotatably mounted on the rotating joint, the bracket is connected to the working head and includes an arc groove, and the rotating joint is rotatably mounted on the arc groove.

[0006] Furthermore, the rotation axis of the support arm is perpendicular to the rotation axis of the rotation joint.

[0007] Furthermore, the bracket includes a pair of arc-shaped grooves, and the pair of arc-shaped grooves are located on the same circumference.

[0008] Furthermore, the pair of arc grooves are symmetrical with respect to the intersection of the plane where the arc grooves are located and the rotation axis of the rotation joint.

[0009] Furthermore, the working head includes a motor and a grinding part. In the utility model, the electric device is a grinder. In other embodiments, the electric device may be other equipment that requires a rotating working head. The motor includes an output shaft extending from the motor to the grinding part and detachably connected to the grinding part. The output shaft is configured to transmit power to the grinding part. The electric device is provided with two relative rotating components. The grinding part includes a grinding surface facing the object to be grinded. The rotation axis of the rotating joint passes through the midpoint of the shortest distance between the two rotating components and is parallel to the grinding surface.

[0010] As a preferred solution of the utility model, the rotation axis of the rotating joint is located on the central axis of the grinding part. Setting the rotation axis of the rotating joint on the central axis of the grinding part makes it smoother for the user to hold the electric device, the force applied to the grinding disc is more uniform, the grinding effect of the grinding part is better, and the user experience can be further enhanced.

[0011] Furthermore, the rotating joint includes a mounting portion and a rotating portion, the support arm is rotatably mounted on the mounting portion, and the rotating portion is slidably mounted on the arc groove; the mounting portion is vertically connected to the rotating portion, so that the user can operate the rotating portion more smoothly and with less effort.

[0012] Furthermore, the bracket is provided with a recess on a side away from the polishing portion, and the recess is configured to limit excessive movement of the support arm to prevent the support arm from excessively rotating and damaging the motor housing, thereby affecting the life of the electric device.

[0013] Furthermore, the support arm can rotate by α°, and 0<α<360°.

[0014] Furthermore, the arc groove includes a starting point A and an end point B, an intersection O between a plane where the arc groove is located and the rotation axis of the rotation joint, and the support arm can rotate β° through the rotation joint, β°=∠AOB, 0<β<45.

[0015] The electric device is provided with the support arm, the rotating joint and the bracket, the bracket is provided with two opposite arc grooves, the support arm is installed on the mounting part of the rotating joint, the support arm and the mounting part are rotatably connected, and the rotating joint can rotate in the arc groove by relying on the rotating part, the mounting part is perpendicular to the rotating part, so that the support arm of the electric device can rotate in all directions, the structure is ingenious, and it can flexibly switch between polishing walls and wall tops, saving time and effort, and tool-free switching, which improves polishing efficiency, enhances the user's polishing experience, and is conducive to the promotion and application of the above-mentioned electric equipment in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a three-dimensional diagram of a grinder according to an embodiment of the present application.

[0017] Figure 2 for Figure 1 A perspective view of the working head of the grinding machine shown

[0018] Figure 3 for Figure 2 A top view of the grinding machine is shown.

[0019] Figure 4 for Figure 1 Front view of the grinder shown.

[0020] Figure 5 for Figure 1 A perspective view of the rotary joint of the grinding machine is shown. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] Combination Figures 1 to 4 An electric device 100 (in the present utility model, the electric device is a grinder, in other embodiments, the electric device can be other devices that require a rotating working head) includes a rod 102, a working head 101, and a rotating assembly 103 connecting the rod 102 and the working head 101, the rotating assembly 103 includes a support arm 1, a rotating joint 2, and a bracket 3, the support arm 1 is rotatably mounted on the rotating joint 2, the bracket 3 is connected to the working head 101 and includes an arc groove 31, and the rotating joint 2 is rotatably mounted on the arc groove 31. The rotation axis L1 of the support arm 1 is perpendicular to the rotation axis L2 of the rotating joint 2.

[0024] The working head 101 includes a motor 4 and a grinding part 5, the motor 4 includes an output shaft extending from the motor 4 to the grinding part 5 and detachably connected to the grinding part 5, the output shaft is configured to transmit power to the grinding part 5, the grinder is provided with two opposite rotating components 103, the grinding part 5 includes a grinding surface 51 facing the object to be grinded, and the rotation axis L2 of the rotating joint 2 passes through the midpoint of the shortest distance between the two rotating components 103 and is parallel to the grinding surface 51.

[0025] Preferably, the bracket 3 includes a pair of arc grooves 31 , and the pair of arc grooves 31 are located on the same circumference. The pair of arc grooves 31 are symmetrical with respect to the intersection O of the plane where the arc grooves 31 are located and the rotation axis of the rotation joint 2 .

[0026] As a preferred solution of the present invention, the rotation axis L2 of the rotation joint 2 is located on the central axis of the grinding part 5. Setting the rotation axis of the rotation joint 2 on the central axis of the grinding part 5 makes it smoother for the user to hold the grinder 100, the force applied to the grinding disc is more uniform, the grinding effect of the grinding part 5 is better, and the user's experience can be further enhanced.

[0027] Combination Figure 2 and Figure 5 The rotating joint 2 includes a mounting portion 21 and a rotating portion 22. The support arm 1 is rotatably mounted on the mounting portion 21, and the rotating portion 22 is slidably mounted on the arc groove 31. The mounting portion 21 is vertically connected to the rotating portion 22, so that the user can operate the rotating portion 22 more smoothly and labor-savingly.

[0028] Preferably, the bracket 3 is provided with a recess 32 on a side away from the grinding part 5 , and the recess 32 is configured to limit excessive movement of the support arm 1 to prevent the support arm 1 from excessively rotating and damaging the motor 4 housing, thereby affecting the life of the grinder 100 .

[0029] Preferably, the support arm 1 can rotate α°, and 0<α<360. The arc groove 31 includes a starting point A and an end point B, an intersection O of the plane where the arc groove 31 is located and the rotation axis L2 of the rotation joint 2, and the support arm 1 can rotate β° through the rotation joint 2, β°=∠AOB, 0<β<45.

[0030] The grinder 100 is provided with the support arm 1, the rotating joint 2 and the bracket 3. The bracket 3 is provided with two opposite arc grooves 31. The support arm 1 is installed on the mounting portion 21 of the rotating joint 2. The support arm 1 is rotatably connected to the mounting portion 21, and the rotating joint 2 can rotate in the arc groove 31 by relying on the rotating portion 22. The mounting portion 21 is perpendicular to the rotating portion 22, so that the support arm 1 of the grinder 100 can be universally rotated. The structure is ingenious, and it can flexibly switch between grinding walls and wall tops, saving time and effort, and tool-free switching, thereby improving grinding efficiency, enhancing the user's grinding experience, and being conducive to the promotion and application of the above-mentioned grinder 100 in the market.

[0031] 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.

[0032] 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 various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (e.g., 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 of multiple parts or elements, the position of the elements can be reversed or otherwise changed, 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 arrangements of various exemplary embodiments without departing from the scope of the present invention.

[0033] Although the current application describes a specific combination of features in the appended claims, various embodiments of the present invention are directed to any combination of any of the features described herein, regardless of whether such a combination is 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.

[0034] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the drawings are drawn to scale. Actual measurements of the drawings will disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges around absolute and relative dimensions, angles, and ratios that can be determined from the drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the drawings. In addition, actual dimensions that are not explicitly stated in this specification can be determined by using the ratios of the dimensions measured in the drawings in conjunction with the explicit dimensions stated in this specification.

Claims

1. An electric device, comprising a rod, a working head and a rotating assembly connecting the rod and the working head, characterized in that: The rotating assembly comprises a support arm, a rotating joint and a bracket, wherein the support arm is rotatably mounted on the rotating joint, the bracket is connected to the working head and comprises an arc-shaped groove, and the rotating joint is rotatably mounted on the arc-shaped groove.

2. The electric device according to claim 1, characterized in that: The rotation axis of the support arm is perpendicular to the rotation axis of the rotation joint.

3. The electric device according to claim 2, characterized in that: The bracket comprises a pair of arc-shaped grooves, and the pair of arc-shaped grooves are located on the same circumference.

4. The electric device according to claim 2, characterized in that: The pair of arc grooves are symmetrical with respect to the intersection of the plane where the arc grooves are located and the rotation axis of the rotation joint.

5. The electric device according to claim 4, characterized in that: The rotary joint comprises a mounting portion and a rotating portion, the support arm is rotatably mounted on the mounting portion, and the rotating portion is slidably mounted on the arc-shaped groove; The mounting portion is vertically connected to the rotating portion.

6. The electric device according to claim 3, characterized in that: The working head includes a motor and a grinding part, the motor includes an output shaft extending from the motor to the grinding part and detachably connected to the grinding part, the output shaft is configured to transmit power to the grinding part, the electric device is provided with two relative rotating components, the grinding part includes a grinding surface facing the object to be polished, and the rotation axis of the rotating joint passes through the midpoint of the shortest distance between the two rotating components and is parallel to the grinding surface.

7. The electric device according to claim 6, characterized in that: The bracket is provided with a recessed portion on a side away from the polishing portion, and the recessed portion is configured to limit the movement of the support arm.

8. The electric device according to claim 5, characterized in that: The support arm can rotate by α°, and 0<α<360°.

9. The electric device according to claim 8, characterized in that: The arc groove includes a starting point A and an end point B, and an intersection O between a plane where the arc groove is located and the rotation axis of the rotation joint. The support arm can rotate by β° through the rotation joint, β°=∠AOB.

10. The electric device according to claim 9, characterized in that: 0＜β＜45。

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