Lower pressing plate convenient for dismounting cutting blade of angle grinder

Abstract

The utility model discloses a lower pressing plate convenient for dismounting a cutting disc of an angle grinder, which comprises a top plate and a bottom plate, corresponding annular rolling grooves are arranged on the top plate and the bottom plate, balls or rolling shafts are arranged in the annular rolling grooves, a groove is arranged on the bottom surface of the top plate, a plurality of stop blocks are arranged in the groove, and the stop blocks are arranged on the bottom surface of the top plate. The top face of the bottom plate is provided with a protruding block corresponding to the groove, the check block is connected with the protruding block, the center of the bottom plate is provided with a connecting cylinder, the top of the top plate is provided with a fastening ring, and the fastening ring is connected with the connecting cylinder. Through the design of the rolling groove and the groove, the cutting disc of the angle grinder is more convenient to disassemble, the labor intensity is effectively reduced, and the use, disassembly and assembly efficiency of the angle grinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle grinder pressing plates, in particular to a lower pressing plate which is convenient for disassembling a cutting blade of an angle grinder. Background Art

[0002] An angle grinder, also known as a grinding machine or disc grinder, is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metals and stones. The cutting blade of the angle grinder needs to be fixed by a lower pressure plate during installation, and the cutting blade needs to be replaced frequently after wear. The traditional lower pressure plate is a solid iron block, which will be squeezed and locked during the grinding process of the angle grinder. When removing the cutting blade, a special wrench is required for disassembly and assembly, which increases the labor intensity of the operator and is inconvenient to disassemble, affecting the use and disassembly efficiency. Therefore, the present application proposes an improved lower pressure plate for an angle grinder, which is more convenient for disassembly of the angle grinder cutting blade through the design of rolling grooves and grooves, and is convenient to use. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a lower pressing plate which is convenient for disassembling a cutting disc of an angle grinder.

[0004] The purpose of the utility model is achieved through the following technical solutions: a lower pressure plate for facilitating the disassembly of the cutting blade of an angle grinder, comprising a top plate and a bottom plate, the top plate and the bottom plate are provided with corresponding annular rolling grooves, balls or rollers are provided in the annular rolling grooves, a groove is opened on the bottom surface of the top plate, a plurality of blocks are provided in the groove, a protruding block corresponding to the groove is provided on the top surface of the bottom plate, the block intersects with the protruding block, a connecting tube is provided in the center of the bottom plate, a fastening ring is installed on the top of the top plate, and the fastening ring is connected to the connecting tube.

[0005] A further technical solution is that a first through hole is provided in the middle of the top plate, the stoppers include three and are evenly arranged in the groove, and the protruding blocks include three and are evenly arranged on the top surface of the bottom plate.

[0006] A further technical solution is that a second through hole is provided at the center of the connecting tube, and the connecting tube corresponds to the first through hole.

[0007] A further technical solution is that a first rolling groove is provided on the bottom surface of the top plate, a corresponding second rolling groove is provided on the top surface of the bottom plate, the ball or roller is arranged between the first rolling groove and the second rolling groove, and the groove and the protrusion are respectively arranged on the inner side of the first rolling groove and the second rolling groove.

[0008] A further technical solution is that the top surface of the top plate is provided with a mounting groove corresponding to the fastening ring, the bottom surface of the bottom plate is provided with a boss, and the boss is provided with symmetrical clamping blocks.

[0009] The utility model has the following advantages:

[0010] (1) The utility model provides an annular rolling groove and installs balls or rollers in the rolling groove to facilitate the rotation of the top plate and the bottom plate. The grooves and protruding blocks are provided to facilitate relative sliding. The stop blocks are used to limit the lower pressure plate to prevent it from being locked during the use of the angle grinder, making it easier to disassemble the cutting blade of the angle grinder. The connecting tube and the fastening ring are provided to facilitate the installation and connection between the top plate and the bottom plate.

[0011] (2) The utility model facilitates the installation of the connecting shaft of the angle grinder by setting the first through hole and the second through hole; the first rolling groove and the second rolling groove can reduce the friction of rotation, and the rotation of the protruding block in the groove is limited by the stop block, which is convenient for manual rotation for disassembly; the boss and the clamping block are provided to facilitate the connection and installation between the lower pressure plate and the angle grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the double-sided structure of the top plate in the utility model;

[0015] Figure 4 It is a schematic diagram of the double-sided structure of the bottom plate of the utility model.

[0016] In the figure, 1, top plate; 101, first through hole; 102, first rolling groove; 103, stopper; 104, groove; 105, mounting groove; 2, bottom plate; 201, connecting tube; 202, second rolling groove; 203, ball; 204, protruding block; 205, boss; 206, clamping block; 207, second through hole; 3, fastening ring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] like Figures 1 to 4 As shown, a lower pressure plate for facilitating the disassembly of the cutting blade of an angle grinder comprises a top plate 1 and a bottom plate 2, wherein the top plate 1 and the bottom plate 2 are provided with corresponding annular rolling grooves, wherein a plurality of balls 203 or rollers are provided in the annular rolling grooves, and the rolling of the balls 203 or rollers in the rolling grooves can effectively reduce the friction of rotation, so as to facilitate manual rotation and disassembly, wherein a groove 104 is provided on the bottom surface of the top plate 1, wherein a plurality of blocks 103 are provided in the groove 104, and the groove 104 is divided by the blocks 103, and the top surface of the bottom plate 2 is provided with a groove 104 which is connected to the groove 104. 04 corresponding to the protruding block 204, the stopper 103 intersects with the protruding block 204, the protruding block 204 after assembly can slide along the groove 104, and is limited by the stopper 103 to prevent the upper and lower surfaces from rotating half a circle, to prevent excessive rotation from causing locking, and to facilitate disassembly, a connecting tube 201 is provided at the center of the bottom plate 2, a fastening ring 3 is installed on the top of the top plate 1, the top plate 1 and the bottom plate 2 are connected by the connecting tube 201, a thread can be set on the outer side of the connecting tube 201, and the fastening ring 3 is used for the combined connection.

[0022] In this embodiment, a first through hole 101 is provided in the middle of the top plate 1, the stoppers 103 include three and are evenly arranged in the groove 104, the protruding blocks 204 include three and are evenly arranged on the top surface of the bottom plate 2, and the combined protruding blocks 204 slide in the groove 104 and are blocked by the symmetrically arranged stoppers 103, thereby limiting the rotation of the protruding blocks 204 to avoid excessive rotation and facilitating manual rotation and disassembly.

[0023] In this embodiment, a second through hole 207 is provided at the center of the connecting tube 201 , and the connecting tube 201 corresponds to the first through hole 101 . When the lower pressure plate is installed with the angle grinder, it is convenient for the rotating shaft of the angle grinder to pass through the first through hole 101 and the second through hole 207 .

[0024] In this embodiment, the bottom surface of the top plate 1 is provided with a first rolling groove 102, and the top surface of the bottom plate 2 is provided with a corresponding second rolling groove 202. The ball 203 or the roller is installed between the first rolling groove 102 and the second rolling groove 202. The groove 104 and the protruding block 204 are respectively arranged on the inner sides of the first rolling groove 102 and the second rolling groove 202. The arrangement of the ball 203, the rolling groove and the groove 104, and the protruding block 204 facilitates the relative rotation of the top plate 1 and the bottom plate 2.

[0025] In this embodiment, the top surface of the top plate 1 is provided with a mounting groove 105 corresponding to the fastening ring 3. During assembly, the connecting tube 201 of the bottom plate 2 passes through the first through hole 101 of the top plate 1, and is connected with the connecting tube 201 through the fastening ring 3 in the mounting groove 105, so that the top plate 1 and the bottom plate 2 are connected. A boss 205 is provided on the bottom surface of the bottom plate 2, and a symmetrical clamping block 206 is provided on the boss 205, which is convenient for clamping and mounting with the angle grinder.

[0026] The implementation principle of the utility model is as follows: the utility model proposes a lower pressure plate that is convenient for disassembling the cutting blade of the angle grinder. The design of the annular rolling groove, the ball 203 or the roller can reduce the rotation friction, facilitate manual rotation, avoid the use of a special wrench, and save more labor intensity. During rotation, the groove 104 and the protruding block 204 are designed to facilitate the relative sliding of the top plate 1 and the bottom plate 2, and the protruding block 204 is slidably limited by the stopper 103 to prevent the lower pressure plate from excessive rotation and locking during the use of the angle grinder, making disassembly more convenient. The assembled top plate 1 and the bottom plate 2 are connected by the connecting tube 201 and the fastening ring 3, and the boss 205 and the clamping block 206 are provided to facilitate the installation of the lower pressure plate and the angle grinder. The utility model is more convenient for disassembling the cutting blade of the angle grinder, effectively saves labor intensity, and improves the use and disassembly efficiency of the angle grinder.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lower pressure plate for facilitating the disassembly of a cutting blade of an angle grinder, comprising a top plate (1) and a bottom plate (2), characterized in that: The top plate (1) and the bottom plate (2) are provided with corresponding annular rolling grooves, and a ball (203) or a roller is provided in the annular rolling grooves. The bottom surface of the top plate (1) is provided with a groove (104), and a plurality of stoppers (103) are provided in the groove (104). The top surface of the bottom plate (2) is provided with a protruding block (204) corresponding to the groove (104), and the stoppers (103) and the protruding blocks (204) are intersected. A protruding connecting tube (201) is provided at the center of the bottom plate (2), and a fastening ring (3) is installed on the top of the top plate (1), and the fastening ring (3) is connected to the connecting tube (201).

2. A lower pressing plate for facilitating the disassembly of an angle grinder cutting blade according to claim 1, characterized in that: A first through hole (101) is provided in the middle of the top plate (1), the stoppers (103) include three and are evenly arranged in the groove (104), and the protruding blocks (204) include three and are evenly arranged on the top surface of the bottom plate (2).

3. A lower pressing plate for facilitating the disassembly of an angle grinder cutting blade according to claim 2, characterized in that: A second through hole (207) is provided at the center of the connecting cylinder (201), and the connecting cylinder (201) corresponds to the first through hole (101).

4. The lower pressing plate for facilitating the disassembly of the cutting blade of an angle grinder according to claim 1, characterized in that: The bottom surface of the top plate (1) is provided with a first rolling groove (102), the top surface of the bottom plate (2) is provided with a corresponding second rolling groove (202), the ball (203) or the roller is arranged between the first rolling groove (102) and the second rolling groove (202), and the groove (104) and the protruding block (204) are respectively arranged on the inner side of the first rolling groove (102) and the second rolling groove (202).

5. The lower pressing plate for facilitating the disassembly of the cutting blade of an angle grinder according to claim 1, characterized in that: The top surface of the top plate (1) is provided with a mounting groove (105) corresponding to the fastening ring (3), and the bottom surface of the bottom plate (2) is provided with a boss (205), and symmetrical clamping blocks (206) are provided on the boss (205).

Images