Surface smoothing device for putty construction
By setting limit blocks, external studs, and L-shaped brackets on the surface grinding device for putty application, tool-free installation and disassembly of the handle are achieved, solving the problem of inconvenience in using existing devices and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-17
AI Technical Summary
Existing surface grinding devices for putty application require operators to carry tools when installing or removing the handle, resulting in inconvenience and low efficiency.
Limit blocks, external studs, internal screws, and L-shaped brackets are installed on the frame. Tool-free limiting of the rotating drum is achieved by turning a knob, simplifying the installation and disassembly process of the handle.
It improves the ease of installing and removing the grip and increases the efficiency of the surface grinding device.
Smart Images
Figure CN223998002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of putty construction technology, and in particular to a surface grinding device for putty construction. Background Technology
[0002] Applying putty is one of the methods of interior wall decoration. Putty is applied to the wall to ensure a smooth surface. Generally, three coats are applied, and after drying, it is sanded smooth. This step is done before applying latex paint. Applying putty refers to removing uneven parts of the base surface through filling or overall treatment, keeping the wall smooth and flat; it is the most important step in base surface preparation.
[0003] like Figure 4 As shown, this is the previous generation of surface grinding device for putty application. Similar to conventional wall sanders on the market, it has two usage modes: handheld and lever-mounted, allowing for grinding of putty on walls of different heights. However, this type of surface grinding device for putty application has the following shortcomings in actual use: After the rotating drum on the previous generation's rotating frame is positioned and fastened to the limiting insert on the frame, fasteners are still needed to prevent the rotating drum from deviating and limit it to the limiting insert. This process requires the operator to carry and use tools, and the entire process of installing and removing the lever is time-consuming and laborious. Adjusting the fasteners too tightly or too loosely can easily cause abnormal problems during the use of the lever, which not only increases the workload and difficulty for the operator in installing and removing the lever, but also reduces the convenience and efficiency of the surface grinding device in daily use.
[0004] In view of this, it is particularly important to design and manufacture a surface smoothing device that enables tool-free quick installation and removal between the handle and the frame, which is especially important for application in putty construction. Utility Model Content
[0005] The purpose of this utility model is to solve the problem that the previous generation of surface grinding devices for putty construction required operators to carry and use tools when installing or disassembling the handle, resulting in poor convenience and low efficiency in daily use. Therefore, a surface grinding device for putty construction is proposed.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A surface smoothing device for putty application includes a frame, a sander mounted on the upper end of the frame, a sanding disc mounted on the lower end of the sander, and a handle mounted on the upper end of the frame. A rotating frame is fixedly connected to the lower end of the handle, and two rotating cylinders are symmetrically fixedly connected to the lower end of the rotating frame. Two limiting cylinders matching the rotating cylinders are symmetrically fixedly connected to the front and rear ends of the frame. Limiting mechanisms for stably limiting the rotating cylinders on the limiting cylinders are provided on both the front and rear ends of the frame.
[0008] As a further description of the above technical solution:
[0009] The limiting mechanism includes a limiting block rotatably mounted on the left side of the front and rear ends of the frame, an external stud screwed onto the right end of the limiting block by a thread, an internal thread cylinder fixed on the right side of the front and rear ends of the frame and matching the external stud, and an L-shaped frame symmetrically fixed on the front and rear ends of the frame and fitting against the outer wall of the limiting block.
[0010] As a further description of the above technical solution:
[0011] A knob is fixedly connected to the external end of the external stud away from the internal cylinder.
[0012] As a further description of the above technical solution:
[0013] The vertical end of the L-shaped frame is as high as the width of the limiting block, and an anti-deviation cam is rotatably mounted on the upper end of the L-shaped frame above the limiting block.
[0014] As a further description of the above technical solution:
[0015] The outer end faces of the limiting insert and the inner screw cylinder are on the same vertical plane as the inner surface of the limiting block, and the lateral distance from the vertical end of the L-shaped frame to the limiting insert and the inner screw cylinder is equal to the thickness of the limiting block.
[0016] As a further description of the above technical solution:
[0017] The front and rear middle sections of the frame are symmetrically and fixedly connected to two handles that are distributed at an angle.
[0018] As a further description of the above technical solution:
[0019] An electric control switch is installed at the middle of the right end of the frame.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0021] In this invention, the original surface grinding device has been scientifically and rationally improved. A limit block, an outer stud, an inner screw cylinder, an L-shaped frame, and an anti-deviation cam are set on the frame. When the rotating cylinder on the rotating frame is positioned and engaged with the limit cylinder on the frame, the limit block can be rotated to adjust to a horizontal state. By holding and rotating the knob, the outer stud on the limit block can be screwed into the inner screw cylinder on the frame. At this time, the rotating cylinder is anti-deviation limited to the outside of the limit cylinder. This structure can limit the rotating cylinder on the rotating frame to the limit cylinder without tools, effectively reducing the workload and difficulty of the handle installation and disassembly operations, thereby improving the convenience and efficiency of switching working modes during daily use of the surface grinding device. Attached Figure Description
[0022] Figure 1 This is a simplified structural diagram of a surface smoothing device for putty application proposed in this utility model, in its disassembled state.
[0023] Figure 2 This is a schematic diagram of the structure of the present invention in its assembled state;
[0024] Figure 3 This is a schematic diagram of the frame structure in this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the previous generation of surface grinding device for putty application in the existing technology.
[0026] Legend:
[0027] 1. Frame; 101. Handle; 102. Limiting insert; 103. Inner screw; 104. L-shaped frame; 105. Anti-deviation cam; 2. Grinding machine; 201. Grinding disc; 3. Handle; 301. Rotating frame; 302. Rotating cylinder; 4. Limiting stop; 401. Outer stud; 402. Knob; 5. Electric control switch. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figure 1-4 This utility model provides a technical solution: a surface grinding device for putty construction, including a frame 1, a grinder 2 installed on the upper end of the frame 1, a grinding disc 201 installed on the lower end of the grinder 2, and a handle 3 set on the upper end of the frame 1. The lower end of the handle 3 is fixedly connected to a rotating frame 301, and the lower end of the rotating frame 301 is symmetrically fixedly connected to two rotating cylinders 302. The front and rear ends of the frame 1 are symmetrically fixedly connected to two limiting inserts 102 that match the rotating cylinders 302. The front and rear ends of the frame 1 are each provided with a limiting mechanism for stably limiting the rotating cylinders 302 on the limiting inserts 102.
[0030] Specifically, such as Figure 1-3As shown, the limiting mechanism includes a limiting block 4 rotatably installed on the left side of the front and rear ends of the frame 1, an external stud 401 screwed onto the right end of the limiting block 4, an internal threaded cylinder 103 fixed on the right side of the front and rear ends of the frame 1 and matching the external stud 401, and an L-shaped frame 104 symmetrically fixed on the front and rear ends of the frame 1 and in contact with the outer wall of the limiting block 4. After the limiting block 4 rotates between the limiting insert 102, the internal threaded cylinder 103 and the L-shaped frame 104, it will be in a horizontal state. At this time, the rotating cylinder 302 of the rotating frame 301 can be limited and blocked on the limiting insert 102 of the frame 1.
[0031] Among them, the outer stud 401 is externally fixedly connected to a knob 402 at the end away from the inner screw barrel 103, which facilitates the operator to hold and rotate the outer stud 401 for adjustment.
[0032] Meanwhile, the vertical end of the L-shaped frame 104 is as high as the width of the limiting block 4. The upper end of the L-shaped frame 104 is rotatably mounted above the limiting block 4 with an anti-deviation cam 105. When the protruding part on the anti-deviation cam 105 is rotated and adjusted to be above the limiting block 4, it can prevent the limiting block 4 from rotating upward and sliding away from the limiting insert 102, the inner screw cylinder 103 and the L-shaped frame 104, thus preventing the limiting block 4 from accidentally rotating and sliding away from the rotating cylinder 302 and the limiting insert 102.
[0033] Furthermore, the outer end faces of the limiting insert 102 and the inner screw cylinder 103 are on the same vertical plane as the inner surface of the limiting block 4. The lateral distance from the vertical end of the L-shaped frame 104 to the limiting insert 102 and the inner screw cylinder 103 is equal to the thickness of the limiting block 4. This structure allows the limiting block 4 to be rotated and adjusted between the limiting insert 102, the inner screw cylinder 103 and the L-shaped frame 104, thereby preventing the limiting block 4 from deviating and limiting it. This reduces the occurrence of lateral displacement and shaking of the limiting block 4 under force, ensuring the limiting effect of the limiting block 4 in limiting the rotating cylinder 302 on the limiting insert 102.
[0034] Specifically, such as Figure 1-4 As shown, two inclined handles 101 are symmetrically fixedly connected to the front and rear middle of the frame 1, which facilitates the operator to hold and place the frame 1. After the handle 3 is removed, the operator can hold the handles 101 with both hands to operate the sander 2 to sand the wall putty by hand.
[0035] Meanwhile, an electric control switch 5 is installed in the middle of the right end of the frame 1, which facilitates the operator to control the power supply of the grinder 2 and adjust the working parameters.
[0036] Working principle: When using the device, to install the handle 3 onto the frame 1, firstly, the rotating cylinder 302 on the rotating frame 301 can be positioned and fastened onto the limiting insert 102 on the frame 1. Secondly, the limiting stop 4 is rotated and adjusted to be between the limiting insert 102, the inner screw cylinder 103, and the L-shaped frame 104. Then, by holding and rotating the knob 402, the outer stud 401 can be screwed inward into the inner screw cylinder 103 on the frame 1. At this time, the limiting stop 4 is in a limiting position. Fixed between the limiting insert 102, the inner screw 103 and the L-shaped frame 104, the rotating drum 302 can be prevented from shifting laterally on the limiting insert 102. Finally, the outer protruding part of the anti-deviation cam 105 on the L-shaped frame 104 is rotated and adjusted to fit against the upper end of the limiting block 4, so that the limiting block 4 can be further locked and fixed between the limiting insert 102, the inner screw 103 and the L-shaped frame 104. At this time, the handle 3 is stably installed on the frame 1.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A putty application surface smoothing device comprising a frame (1), a sander (2) mounted on the upper end of the frame (1), a sanding disc (201) mounted on the lower end of the sander (2), and a handle (3) provided on the upper end of the frame (1), characterized in that, The lower end of the handle bar (3) is fixedly connected with a rotating frame (301), the lower end of the rotating frame (301) is fixedly connected with two rotating cylinders (302) in symmetry, the front end and the rear end of the frame (1) are fixedly connected with two limiting insertion cylinders (102) matched with the rotating cylinders (302) in symmetry, and the front end and the rear end of the frame (1) are both provided with limiting mechanisms for stably limiting the rotating cylinders (302) on the limiting insertion cylinders (102).
2. The putty application surface smoothing device according to claim 1, wherein The limiting mechanism comprises a limiting block (4) rotatably installed on the left side of the front end and the rear end of the frame (1), an outer stud (401) threadedly installed on the right end of the limiting block (4), an inner cylinder (103) fixed on the right side of the front end and the rear end of the frame (1) and matched with the outer stud (401), and L-shaped frames (104) fixed on the front end and the rear end of the frame (1) in symmetry and matched with the outer wall of the limiting block (4).
3. The putty application surface smoothing device according to claim 2, wherein The outer end of the outer stud (401) away from the inner cylinder (103) is fixedly connected with a knob (402).
4. The putty application surface smoothing device according to claim 2, wherein The vertical end of the L-shaped frame (104) is equal in height to the width of the limiting block (4), and the upper end of the L-shaped frame (104) is rotatably installed above the limiting block (4) and provided with an anti-deviation cam (105).
5. The putty application surface smoothing device according to claim 2, wherein The outer end faces of the limiting insertion cylinder (102) and the inner cylinder (103) are in the same vertical plane as the inner surface of the limiting block (4), and the horizontal distance between the vertical end of the L-shaped frame (104) and the limiting insertion cylinder (102) and the inner cylinder (103) is equal to the thickness of the limiting block (4).
6. The putty application surface smoothing device according to claim 1, wherein The middle part of the front end and the rear end of the frame (1) is fixedly connected with two handles (101) in symmetry and inclined distribution.
7. The putty application surface smoothing device according to claim 1, wherein The middle part of the right end of the frame (1) is provided with an electric control switch (5).