Quick-change grinding wheel cover structure for angle grinder

Abstract

The utility model relates to a quick-change grinding wheel cover structure for an angle grinder, which comprises a grinding cover body and a protective cover body detachably sleeved on the outer side of the grinding cover body, the grinding cover body is of a fan-shaped structure, the upper part of the grinding cover body is a closed end, and side edges connected with two ends of the closed end are arranged on two sides of the lower part of the grinding cover body. A through mounting hole is formed in the inner side edge of each side edge, a screw sleeved with a gasket is mounted in each mounting hole, the screws penetrate into the mounting holes from bottom to top, and limiting parts are formed at the ends, extending out of the upper surfaces of the mounting holes, of the screws through riveting deformation. And the design that the protective cover body is prevented from falling off through the riveting process is utilized, so that the mounting and dismounting processes of the protective cover body are greatly simplified, and a user only needs to sleeve the protective cover body outside the polishing cover body, ensure that the gasket is clamped into the corresponding limiting sinking groove and tighten the screw, so that quick locking can be completed.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a quick-change grinding wheel cover structure for an angle grinder. Background Technology

[0002] Angle grinders (also known as grinding machines or abrasive wheels) use a grinding wheel cover as a key safety protection component during operation. This cover is primarily used to protect operators from injuries caused by flying debris from the high-speed rotating grinding wheel. Additionally, to further enhance safety, in some applications, a cutting guard is installed on the outside of the grinding wheel cover to prevent debris, sparks, and other contaminants generated during grinding or cutting operations from flying outwards.

[0003] Traditional combinations of grinding wheel covers and cutting guards typically come in two types. One is an integrated design, which is relatively cumbersome to replace, requiring the grinding wheel cover to be removed and the entire integrated unit installed. If replacement is needed later, this process of disassembly and reassembly must be repeated. The other type uses screws for connection, where the cutting guard is directly tightened and fixed to the grinding wheel cover. However, this design has several significant problems: 1. Every time the cutting guard needs to be installed or removed, the screws must be found and tightened one by one. This process is not only time-consuming and labor-intensive, but also significantly reduces work efficiency when frequently changing work environments or adjusting equipment settings. 2. Because the screws used for fixing are small, they are prone to falling off or being lost during operation, especially in complex and changing industrial environments. Finding and replacing these small parts is often very difficult, increasing maintenance costs and potentially leading to delays in equipment maintenance or adjustments due to a lack of necessary spare parts. Furthermore, with the passage of time and increased usage frequency, frequent screw removal and installation may affect the tightness and stability between the cutting guard and the grinding wheel cover, thus reducing the overall protective effect. Utility Model Content

[0004] This invention aims to solve the problems existing in the prior art by providing a quick-change grinding wheel cover structure that makes the installation and disassembly of angle grinders more convenient and stable.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This quick-change grinding wheel cover structure for an angle grinder includes a grinding cover body and a protective cover body detachably sleeved on the outside of the grinding cover body. The grinding cover body has a fan-shaped structure, with the upper part of the grinding cover body being a closed end. The lower part of the grinding cover body has side edges on both sides that connect to the two ends of the closed end. A through mounting hole is opened on the inner edge of each side edge. A screw with a washer is installed in each mounting hole. The screw passes through the mounting hole from bottom to top and extends out of the mounting hole. The end of the upper surface is riveted to form a limiting part, so that the washer is between the screw head and the lower surface of the grinding cover, and the washer retains a movable gap that allows relative movement. The protective cover has a shell structure that matches the shape of the closed end. Its inner side is provided with a limiting groove for fitting the closed end. The lower groove wall of the limiting groove is provided with a pair of connecting parts corresponding to the position of the screw. Each connecting part has a slot, which is used to accommodate and lock the washer, so as to realize quick locking and positioning between the protective cover and the grinding cover.

[0006] Preferably, the slot is provided with a limiting groove, the washer is disposed in the limiting groove, and the bottom surface of the washer abuts against the bottom wall of the limiting groove.

[0007] Preferably, the slot has a U-shaped structure, with an inlet end and an inner end. The limiting groove is located at the inner end, and a pair of guide parts are provided at the inlet end. The outer end of the guide parts is lower than the height of the limiting groove, and the inner end of the guide parts is connected to the limiting groove, forming one side wall of the limiting groove.

[0008] Preferably, the inlet end of the slot is oriented along the direction of the limiting groove.

[0009] Preferably, the screw has a threaded section, and the mounting hole has an internal thread. When the screw is installed in the mounting hole, the threaded section engages with the internal thread in the mounting hole.

[0010] Preferably, the diameter of the threaded section is smaller than the width of the slot, and the diameter of the screw head is larger than the width of the slot.

[0011] Preferably, the mounting hole extends downward to form a protrusion, and the height of the protrusion is lower than the height of the groove of the protective cover fitted onto the polishing cover.

[0012] Preferably, the grinding cover includes a bottom wall with a fan-shaped structure, the upper part of the bottom wall is provided with the closed end, the lower part of the grinding cover is provided with an open end for connecting to an angle grinder, and the side edges of the lower part of the grinding cover are symmetrically arranged along the open end.

[0013] The beneficial effects of this utility model are: by directly fixing the screws to the grinding cover and using the riveting process to prevent them from falling off, the installation and disassembly process of the protective cover is greatly simplified. Users only need to put the protective cover on the outside of the grinding cover and ensure that the washer is inserted into the corresponding limit groove and tighten the screw to complete the quick locking. There is no need to find and install multiple small screws one by one, which improves work efficiency. Attached Figure Description

[0014] Figure 1 This is a front view of a quick-change grinding wheel cover structure for an angle grinder according to the present invention;

[0015] Figure 2 This is a perspective view of a quick-change grinding wheel cover structure for an angle grinder according to the present invention;

[0016] Figure 3 This is a schematic diagram of the protective cover structure;

[0017] Figure 4 for Figure 3 Structural layout diagram at point A;

[0018] Figure 5 This is a schematic diagram of the structure for polishing the cover;

[0019] Figure 6 This is a schematic diagram of the bottom structure of a quick-change grinding wheel cover structure for an angle grinder according to the present invention;

[0020] Figure 7 In order to be in Figure 6 A schematic diagram showing the removal of screws from the structure;

[0021] Figure 8 This is an exploded view of a quick-change grinding wheel cover structure for an angle grinder according to the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Grinding the cover; 100. Closed end; 101. Side; 102. Mounting hole; 103. Internal thread; 104. Washer; 105. Screw; 106. Limiting part; 107. Threaded section; 108. Protrusion; 109. Bottom wall; 110. Open end;

[0024] 2. Protective cover; 200. Limiting groove; 201. Connecting part; 202. Slot; 203. Limiting recess; 204. Inlet end; 205. Inner end; 206. Guide part. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] like Figures 1 to 8 As shown, a quick-change grinding wheel cover structure for an angle grinder includes a grinding cover 1 and a protective cover 2 detachably sleeved on the outside of the grinding cover 1. The grinding cover 1 has a fan-shaped structure, with the upper part of the grinding cover 1 being a closed end 100. The lower part of the grinding cover 1 has side edges 101 on both sides that connect to the two ends of the closed end 100. Each side edge 101 has a through mounting hole 102 on its inner edge. A screw 105 fitted with a washer 104 is installed in each mounting hole 102. The screw 105 is inserted into the mounting hole 102 from bottom to top, and the end protruding from the upper surface of the mounting hole 102 is riveted to the ground. The limiting part 106 is formed so that the washer 104 is between the head of the screw 105 and the lower surface of the grinding cover 1, and the washer 104 retains a movable gap that allows relative movement. The protective cover 2 has a cover structure that matches the shape of the closed end 100. The inner side is provided with a limiting groove 200 for fitting the closed end 100. A pair of connecting parts 201 corresponding to the position of the screw 105 are provided on the lower groove wall of the limiting groove 200. Each connecting part 201 is provided with a slot 202. The slot 202 is used to accommodate and lock the washer 104 so as to realize the quick locking and positioning between the protective cover 2 and the grinding cover 1.

[0027] The structure includes a fan-shaped grinding cover 1 and a protective cover 2 detachably fitted onto its outer side. The upper part of the grinding cover 1 is a closed end 100, and the lower part has side edges 101 connected to the two ends of the closed end 100. The grinding cover 1 has mounting holes 102 near the edge of each side edge 101. Screws 105 pre-fitted with washers 104 are installed in the mounting holes 102. These screws 105 pass through the mounting holes 102 from bottom to top, and a limiting part 106 is formed by riveting the upper surface of the mounting holes 102. This ensures that the washers 104 are located between the head of the screws 105 and the lower surface of the grinding cover 1, while maintaining a certain clearance for position adjustment. The protective cover 2 is designed... The protective cover 2 is designed to match the shape of the closed end 100 of the grinding cover 1. The cover has an internal limiting groove 200 for fitting the closed end 100. The lower wall of the limiting groove 200 has a pair of connecting parts 201 corresponding to the positions of the screws 105. Each connecting part 201 has a slot 202. When the washer 104 is correctly inserted into the slot 202 and the screws 105 are tightened, the limiting part 106 abuts against the upper surface of the grinding cover 1, which can achieve quick locking and precise positioning between the protective cover 2 and the grinding cover 1. This not only greatly improves the efficiency of installation and disassembly and reduces the risk of losing small parts, but also enhances the stability and safety of the overall structure, effectively improving the user experience and the reliability of the equipment.

[0028] Specifically, such as Figures 3 to 6 As shown, a limiting groove 203 is provided in the slot 202, and a washer 104 is provided in the limiting groove 203. The bottom surface of the washer 104 abuts against the bottom wall 109 of the limiting groove 203.

[0029] The slot 202 has a specially designed limiting groove 203 inside, which is used to precisely fix the position of the washer 104. The washer 104 is designed to be placed in the limiting groove 203, and its bottom surface directly contacts and abuts against the bottom wall 109 of the limiting groove 203, ensuring that the washer 104 will not shift or slide during installation, thereby ensuring a tight connection between the protective cover 2 and the grinding cover 1. By firmly fixing the washer 104 in the limiting groove 203, not only is the stability of the entire structure improved, but the protective effect is also enhanced, and the risk of loosening due to vibration or other external forces is reduced.

[0030] Furthermore, such as Figure 6 and Figure 7 As shown, the slot 202 has a U-shaped structure, with an inlet end 204 and an inner end 205. The limiting groove 203 is disposed at the inner end 205. The inlet end 204 is provided with a pair of guide parts 206. The height of the outer end of the guide part 206 is lower than the height of the limiting groove 203. The inner end 205 of the guide part 206 is connected to the limiting groove 203, and the inner end 205 forms one side wall of the limiting groove 203.

[0031] The slot 202 adopts a U-shaped structure and is designed with two parts: an inlet end 204 and an inner end 205. The limiting groove 203 is located at the inner end 205, which facilitates the smooth entry of the washer 104. The inlet end 204 is provided with a pair of guide parts 206. The guide parts 206 gradually rise from the outer end to the inner end until they connect with the limiting groove 203 to form a side wall. The design of the guide parts 206 allows the washer 104 to slide smoothly into the limiting groove 203 along a specific path, reducing the difficulty of manual alignment and improving assembly efficiency. In addition, the feature that the height of the outer end of the guide part 206 is lower than the height of the limiting groove 203 helps to guide the washer 104 to be accurately positioned and prevents it from accidentally jumping out during installation, ensuring the simplicity and accuracy of operation.

[0032] Furthermore, such as Figure 6 and Figure 7 As shown, the inlet end 204 of the card slot 202 is oriented along the direction of the limiting groove 200.

[0033] The inlet end 204 of the slot 202 is arranged in the direction of the limiting groove 200, which simplifies the docking process between the protective cover 2 and the grinding cover 1. In this way, when the user tries to put the protective cover 2 on the grinding cover 1, the washer 104 can naturally move along the preset path to the inlet of the slot 202 and smoothly enter the limiting groove 203 with the help of the guide part 206.

[0034] Specifically, such as Figure 5 , Figure 7 and Figure 8 As shown, the screw 105 has a threaded section 107 and an internal thread 103 in the mounting hole 102. When the screw 105 is installed in the mounting hole 102, the threaded section 107 and the internal thread 103 in the mounting hole 102 are engaged and connected.

[0035] The screw 105 is designed with a special threaded section 107 to ensure that it can be firmly fixed in the mounting hole 102 of the grinding cover 1. When the screw 105 is inserted into the mounting hole 102 from bottom to top, the threaded section 107 on it precisely matches and tightly engages with the internal thread 103 provided inside the mounting hole 102, thereby achieving a stable connection. Through the precise fit between the threaded section 107 and the internal thread 103, the washer 104 retains a movable clearance that allows relative movement.

[0036] Furthermore, such as Figure 2 and Figure 6 As shown, the diameter of the threaded section 107 is smaller than the width of the slot 202, and the diameter of the screw head 105 is larger than the width of the slot 202.

[0037] The diameter of the threaded section 107 is designed to be slightly smaller than the width of the slot 202, so that the slot 202 can wrap around the threaded section 107. The diameter of the screw head 105 is designed to be larger than the width of the slot 202, so as to prevent the screw 105 from completely passing through the slot 202 and falling off. It can also lock the protective cover 2 and the polishing cover 1 without the washer 104, achieving the dual goals of easy installation and ensuring stability.

[0038] Furthermore, such as Figure 5 and Figure 7 As shown, the mounting hole 102 extends downward to form a protrusion 108, and the height of the protrusion 108 is lower than the height of the groove 202 of the protective cover 2 fitted on the polishing cover 1.

[0039] The mounting hole 102 extends downward to form a protrusion 108. The height of the protrusion 108 is designed to be lower than the height of the slot 202 of the protective cover 2 fitted on it, providing sufficient space for the washer 104 to move and ensuring that the washer 104 can be locked in the correct position. The presence of the protrusion 108 not only helps to guide the screw 105 to accurately enter the mounting hole 102, but also increases the strength of the mounting hole 102 and reduces wear or deformation problems that may occur during long-term use.

[0040] Specifically, such as Figure 5 As shown, the grinding cover 1 includes a bottom wall 109 with a fan-shaped structure. The upper part of the bottom wall 109 is provided with a closed end 100, and the lower part of the grinding cover 1 is provided with an open end 110 for connecting with an angle grinder. The side edges 101 on both sides of the lower part of the grinding cover 1 are symmetrically arranged along the open end 110.

[0041] The grinding cover 1 adopts a unique fan-shaped structure design. The upper part of the bottom wall 109 is provided with a closed end 100 to protect the operator from flying debris, while the lower part of the bottom wall 109 is provided with an open end 110, which is specifically used to connect with the angle grinder to ensure that the equipment is installed firmly and operates smoothly. In addition, the side edges 101 on both sides of the lower part of the grinding cover 1 are symmetrically arranged along the open end 110. This symmetrical layout is not only aesthetically pleasing, but more importantly, it can provide balanced support to ensure good balance and stability under various working conditions.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A quick-change abrasive wheel cover structure for an angle grinder, comprising a polishing cover body (1) and a protective cover body (2) detachably sleeved outside the polishing cover body (1), the polishing cover body (1) is in a fan-shaped structure, the upper part of the polishing cover body (1) is a closed end (100), and the lower part of the polishing cover body (1) is provided with side edges (101) on both sides and connected with both ends of the closed end (100), characterized in that: a through mounting hole (102) is formed on the inner side edge (101) of each side edge (101), a screw (105) with a gasket (104) sleeved thereon is mounted in each mounting hole (102), the screw (105) penetrates into the mounting hole (102) from bottom to top, and a limiting portion (106) is formed by deforming the end portion protruding out of the upper surface of the mounting hole (102) through riveting, so that the gasket (104) is between the head of the screw (105) and the lower surface of the polishing cover body (1), and the gasket (104) retains a movable gap allowing relative movement, the protective cover body (2) is in a shell structure matching the shape of the closed end (100), and the inner side thereof is provided with a limiting groove (200) for sleeving the closed end (100), a pair of connecting portions (201) corresponding to the positions of the screws (105) are arranged on the lower groove wall of the limiting groove (200), a clamping groove (202) is formed on each connecting portion (201), the clamping groove (202) is used for accommodating and clamping the gasket (104), so as to realize quick locking and positioning between the protective cover body (2) and the polishing cover body (1). The clamping groove (202) is provided with a limiting sink (203), and the gasket (104) is arranged in the limiting sink (203), with the bottom surface of the gasket (104) abutting against the bottom wall (109) of the limiting sink (203).

2. The quick-change abrasive wheel cover structure for an angle grinder according to claim 1, characterized in that: The clamping groove (202) is in a U-shaped structure, the clamping groove (202) has an inlet end (204) and an inner end (205), the limiting sink (203) is arranged at the inner end (205), the inlet end (204) is provided with a pair of guide portions (206), the outer end of the guide portion (206) is lower than the height of the limiting sink (203), the inner end (205) of the guide portion (206) is connected with the limiting sink (203), and the inner end (205) forms one side wall of the limiting sink (203).

3. The quick-change abrasive wheel cover structure for an angle grinder according to claim 2, characterized in that: The inlet end (204) of the clamping groove (202) is formed in a direction along the limiting groove (200).

4. The quick-change abrasive wheel cover structure for an angle grinder according to claim 3, characterized in that: The screw (105) has a threaded section (107), the mounting hole (102) is provided with an internal thread (103), and when the screw (105) is mounted in the mounting hole (102), the threaded section (107) is connected with the internal thread (103) in the mounting hole (102).

5. The quick-change abrasive wheel cover structure for an angle grinder according to claim 1, characterized in that: The diameter of the threaded section (107) is smaller than the groove width of the clamping groove (202), and the diameter of the head of the screw (105) is greater than the groove width of the clamping groove (202).

6. The quick-change abrasive wheel cover structure for an angle grinder according to claim 5, characterized in that: ​ 7. The quick-change abrasive wheel cover structure for an angle grinder according to claim 5, characterized in that: The mounting hole (102) extends downward to form a protrusion (108), and the height of the protrusion (108) is lower than the height of the clamping groove (202) of the protective cover (2) sleeved on the polishing cover (1).

8. The quick-change abrasive wheel cover structure for an angle grinder according to claim 1, characterized in that: The polishing cover (1) comprises a bottom wall (109) in a fan-shaped structure, an upper portion of the bottom wall (109) is provided with the closed end (100), and a lower portion of the polishing cover (1) is provided with an open end (110) for connecting with the angle grinder, and the side edges (101) on both sides of the lower portion of the polishing cover (1) are symmetrically arranged along the open end (110).

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