Brushless angle grinder capable of quickly clamping grinding wheel

Abstract

The utility model discloses a fast clamping grinding wheel sheet brushless angle grinder which comprises a machine body and a flange rotationally connected with the machine body, a wheel sheet is fixedly connected to the flange, a clamping sleeve is fixedly connected to the flange, a clamping plate is fixedly connected to the wheel sheet, a clamping block is slidably connected to the inner side wall of the clamping plate, and a clamping groove is formed in the side wall, close to the clamping groove, of the clamping sleeve. A push plate is slidably connected into the clamping sleeve, one end of the push plate extends out of the clamping sleeve, when the push plate slides into the clamping sleeve, the clamping block is located in the mounting groove, the clamping plate is inserted into the clamping sleeve when the wheel sheet is mounted, and at the moment, the clamping block is clamped with the clamping groove, so that the wheel sheet is fixed, the mounting process is simplified through the design, the wheel sheet is more convenient and faster to mount, and the mounting efficiency is improved. The push plate is slidably connected in the clamping sleeve, the clamping block can be separated from the clamping groove by pushing the push plate when the wheel sheet is disassembled, fixation between the clamping plate and the clamping sleeve is relieved at the moment, and disassembly of the wheel sheet is simplified through the design.

Description

Technical Field

[0001] The utility model belongs to the field of electric tools and relates to an angle grinder, in particular to a brushless angle grinder with a fast-clamping grinding wheel. Background Art

[0002] Angle grinder, also known as grinding machine or disc grinder, is a kind of grinding tool used for cutting and grinding fiberglass. Angle grinder is a portable electric tool that uses fiberglass to cut and grind, mainly used for cutting, grinding and brushing metal and stone.

[0003] For example, the angle grinder with publication number CN217122775U includes: a casing, a motor accommodated in the casing, a working head connected to the motor and a shield assembly that partially accommodates the working head, the shield assembly includes a first shield connected to the casing and a second shield installed on the first shield; the shield assembly also includes a locking assembly that connects the second shield to the first shield, the locking assembly includes a locking protrusion arranged on the first shield and a lock buckle slidably arranged on the second shield, the locking protrusion has a first stop portion protruding outward from the first shield and a second stop portion bent and protruding from the end of the first stop portion to the side, the lock buckle includes a limit rod and a spring located at one end of the limit rod, the spring acts on the limit rod to make the limit rod buckle on the second stop portion.

[0004] However, most of the existing wheel discs are fixed to the flange by multiple bolts. After long-term use, the wheel discs will wear out. When replacing the worn wheel discs, the bolts need to be removed one by one before replacement. However, the disassembly and replacement process is relatively troublesome and inconvenient. Utility Model Content

[0005] The utility model provides a brushless angle grinder with a quick-clamping grinding wheel, which can quickly and conveniently replace the wheel.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a brushless angle grinder with quick clamping grinding wheel, comprising a machine body and a flange rotatably connected to the machine body, a wheel piece is fixedly connected to the flange, a clamping sleeve is fixedly connected to the flange, a clamping plate used in conjunction with the clamping sleeve is fixedly connected to a side wall of the wheel piece close to the flange, when the wheel piece is fixed to the flange, the clamping plate is inserted into the clamping sleeve, a clamping block is slidably connected to the inner side wall of the clamping plate, a clamping slot is provided on a side wall of the clamping slot, when the clamping plate is inserted into the clamping sleeve, the clamping block is clamped into the clamping slot, a push plate is slidably connected to the inside of the clamping sleeve, one end of the push plate extends outside the clamping sleeve, and when the push plate slides into the clamping sleeve, the clamping block is located in the mounting slot.

[0007] A further preferred technical solution of the present invention is that the cross section of the clamping plate is L-shaped.

[0008] A further preferred technical solution of the utility model is: a mounting groove is provided on the clamping plate, the clamping block slides in the mounting groove, a spring is fixedly connected between the mounting groove and the clamping block, and when the clamping block is located in the mounting groove, the spring is deformed.

[0009] A further preferred technical solution of the present invention is that the width of the card block and the depth of the card slot both gradually increase from bottom to top.

[0010] A further preferred technical solution of the utility model is that both ends of the push plate are fixedly connected to limit blocks.

[0011] A further preferred technical solution of the utility model is: an embedding groove is provided on the inner bottom surface of the clamping sleeve, and the limiting block at the top end of the push plate can be inserted into the embedding groove.

[0012] A further preferred technical solution of the utility model is: a plurality of springs are fixedly connected between the limit block at the bottom of the push plate and the ferrule. When the push plate slides into the ferrule, the springs are deformed. Two springs are provided, and the two springs are symmetrically arranged with the push plate as the central axis.

[0013] A further preferred technical solution of the utility model is: an arcuate surface is provided on the top surface of the push plate and the width of the push plate gradually decreases from bottom to top.

[0014] A further preferred technical solution of the utility model is that the embedding groove and the limiting block are both fixedly connected with magnetic sheets that can attract each other.

[0015] Compared with the prior art, the utility model has a wheel piece fixedly connected to the flange, a clamping sleeve fixedly connected to the flange, a clamping plate used in conjunction with the clamping sleeve fixedly connected to a side wall of the wheel piece close to the flange, a clamping block slidably connected to the inner side wall of the clamping plate, a clamping slot is provided on a side wall of the clamping sleeve close to the slot, when installing the wheel piece, the clamping plate is inserted into the clamping sleeve, at which time the clamping block is clamped with the slot to fix the wheel piece, this design simplifies the installation process and makes the installation of the wheel piece more convenient and quick, a push plate slidably connected in the clamping sleeve, when removing the wheel piece, the clamping block can be separated from the slot by pushing the push plate, at which time the fixation between the clamping plate and the clamping sleeve is released, this design also simplifies the removal of the wheel piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 It is the overall structure diagram of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 The utility model is a cross-sectional view Figure 1 ;

[0021] Figure 5 For this utility model Figure 4 The enlarged view of point B in the middle;

[0022] Figure 6 The utility model is a cross-sectional view Figure 2 ;

[0023] Figure 7 For this utility model Figure 6 Enlarged view of point C in the middle;

[0024] Figure 8 It is a cross-sectional view of the wheel piece in the utility model;

[0025] Fig. 9 For this utility model Figure 8 Enlarged view of point D in the middle.

[0026] In the figure: 1, machine body; 2, wheel; 3, flange; 4, sleeve; 5, push plate; 6, limit block; 7, arc surface; 8, spring 2; 9, clamping plate; 10, clamping groove; 11, mounting groove; 12, spring 1; 13, clamping block; 14, embedded groove. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0029] Figure 1-Figure 5As shown, a brushless angle grinder with a quick-clamping grinding wheel comprises a body 1 and a flange 3 rotatably connected to the body 1, a wheel 2 is fixedly connected to the flange 3, a clamping sleeve 4 is fixedly connected to the flange 3, a clamping plate 9 used in conjunction with the clamping sleeve 4 is fixedly connected to a side wall of the wheel 2 close to the flange 3, and the cross-section of the clamping plate 9 is L-shaped. When the wheel 2 is fixed on the flange 3, the clamping plate 9 is inserted into the clamping sleeve 4, thereby clamping the wheel 2 on the flange 3.

[0030] Figure 2-Figure 9 When the clamping plate 9 is inserted into the card release sleeve, as the clamping plate 9 is inserted into the card release sleeve, the inner wall of the card sleeve 4 pushes the clamping block 13 to slide into the installation groove 11. At this time, as the clamping plate 9 is fully inserted into the card sleeve 4, the clamping block 13 is opposite to the clamping groove 10, and the deformed spring 12 pushes the clamping block 13 to be clamped into the clamping groove 10, thereby fixing the wheel piece 2 on the flange 3. This design has a simple structure and saves a lot of installation steps during the installation process, making the installation of the wheel piece 2 more convenient and quick, easy to operate, and saving operation time.

[0031] Figure 2-Figure 9 As shown, the width of the block 13 and the depth of the slot 10 gradually increase from bottom to top, and the cross-section of the block 13 is triangular. Therefore, when the clamping plate 9 is inserted into the clamping sleeve 4, as the clamping plate 9 is inserted, the block 13 can slide into the installation slot 11 more smoothly along the inclined surface, so that the clamping plate 9 can be smoothly inserted into the clamping sleeve 4. This design makes the installation of the wheel 2 smoother.

[0032] Figure 2-Figure 5 As shown, a push plate 5 is slidably connected inside the ferrule 4, and one end of the push plate 5 extends outside the ferrule 4, which can facilitate the push plate 5 to slide. Both ends of the push plate 5 are fixedly connected to limiting blocks 6, which can limit the sliding range of the push plate 5 and prevent the push plate 5 from separating from the ferrule 4 or completely sliding into the ferrule 4 during the sliding process.

[0033] Figure 2-Figure 5 As shown, an arc-shaped surface 7 is provided on the top surface of the push plate 5, so when the wheel 2 is in use, the top surface of the push plate 5 and the inner bottom surface of the clamping sleeve 4 can be on the same plane, avoiding the push plate 5 affecting the use of the clamping plate 9, and the width of the push plate 5 gradually decreases from bottom to top, so that when the push plate 5 is pushed, the end of the push plate 5 can be better inserted into the gap between the clamping block 13 and the clamping slot 10.

[0034] Figure 2-Figure 7As shown, an embedding groove 14 is provided on the inner bottom surface of the sleeve 4, and the limit block 6 at the top of the push plate 5 can be inserted into the embedding groove 14. When the block 13 is inserted into the slot 10, the limit block 6 is embedded in the embedding groove 14, thereby preventing the limit block 6 from affecting the insertion of the clamping plate 9 into the sleeve 4. This design plays a role in hiding the limit block 6.

[0035] Figure 2-Figure 7 As shown, the embedding groove 14 and the limit block 6 are fixedly connected with magnetic pieces that can attract each other. Therefore, when the wheel 2 is in use, the magnetic piece on the limit block 6 and the magnetic piece in the embedding groove 14 are attracted to each other, thereby fixing the push plate 5 to prevent the push plate 5 from sliding during the rotation of the flange 3 and affecting the engagement between the clamping block 13 and the groove 10. This design plays a role in fixing the push plate 5.

[0036] Figure 2-Figure 7 As shown, a plurality of springs 8 are fixedly connected between the limit block 6 at the bottom end of the push plate 5 and the clamping sleeve 4. When the push plate 5 slides into the clamping sleeve 4, the limit block 6 at the top end of the push plate 5 is separated from the embedding groove 14, and the top end of the push plate 5 is inserted between the clamping block 13 and the clamping groove 10. As the push plate 5 gradually goes deeper, the clamping block 13 is pushed into the installation groove 11 by the push plate 5 and separated from the clamping groove 10. At this time, the fixation between the clamping plate 9 and the clamping sleeve 4 is released. At the same time, as the push plate 5 slides, the limit block 6 at the bottom end of the push plate 5 squeezes the springs 8 to deform it. Thereafter, the wheel 2 is removed to cancel the force pushing the push plate 5 to slide. At this time, the deformed springs 8 push the limit block 6 at the bottom end of the push plate 5 to slide outward due to the disappearance of the force. At this time, the push plate 5 slides outward accordingly, thereby resetting. This design plays a role in driving the push plate 5 to reset after it slides.

[0037] Figure 7 As shown, two springs 8 are provided, and the two springs 8 are symmetrically arranged with the push plate 5 as the central axis. This design enables the push plate 5 to be subjected to balanced forces, thereby better resetting.

[0038] The above is an introduction to a brushless angle grinder with a quick-clamping grinding wheel provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A brushless angle grinder with a quick-clamping grinding wheel, comprising a body and a flange rotatably connected to the body, characterized in that: A wheel is fixedly connected to the flange, and a clamping sleeve is fixedly connected to the flange. A clamping plate used in conjunction with the clamping sleeve is fixedly connected to a side wall of the wheel close to the flange. When the wheel is fixed to the flange, the clamping plate is inserted into the clamping sleeve, and a clamping block is slidably connected to the inner wall of the clamping plate. A clamping slot is provided on a side wall of the clamping sleeve close to the slot. When the clamping plate is inserted into the clamping sleeve, the clamping block is clamped into the slot. A push plate is slidably connected to the clamping sleeve, and one end of the push plate extends outside the clamping sleeve. When the push plate slides into the clamping sleeve, the clamping block is located in the mounting slot.

2. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: The cross section of the clamping plate is L-shaped.

3. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: The clamping plate is provided with an installation groove, the clamping block is located in the installation groove and slides, a spring 1 is fixedly connected between the installation groove and the clamping block, and when the clamping block is located in the installation groove, the spring 1 is deformed.

4. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: The width of the card block and the depth of the card slot both increase gradually from bottom to top.

5. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: Both ends of the push plate are fixedly connected to limit blocks.

6. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: An embedding groove is provided on the inner bottom surface of the clamping sleeve, and the limiting block at the top end of the push plate can be inserted into the embedding groove.

7. The brushless angle grinder with quick-clamping grinding wheel according to claim 5, characterized in that: A plurality of springs are fixedly connected between the limit block at the bottom end of the push plate and the ferrule. When the push plate slides into the ferrule, the springs are deformed. Two springs are provided, and the two springs are symmetrically arranged with the push plate as the central axis.

8. The brushless angle grinder with quick-clamping grinding wheel according to claim 1, characterized in that: An arc surface is arranged on the top surface of the push plate and the width of the push plate gradually decreases from bottom to top.

9. The brushless angle grinder with quick-clamping grinding wheel according to claim 6, characterized in that: The embedding groove and the limiting block are both fixedly connected with magnetic sheets that can attract each other.

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