Angle grinder with adjustable length

Abstract

The utility model relates to the field of angle grinders, and discloses a length-adjustable angle grinder which comprises an angle grinder main body, a handle is fixedly connected to the right side of the angle grinder main body, a rotating shaft is rotatably connected to the bottom end of the left side of the angle grinder main body, a lifting assembly is arranged on the left side of the angle grinder main body, a grinding wheel is arranged on the lifting assembly, and the grinding wheel is connected with the handle. The lifting assembly comprises a cylindrical rod, a connecting rod is fixedly connected to the outer wall of the cylindrical rod, a hinge rod is hinged to the bottom end of the connecting rod, a circular ring is hinged to the bottom end of the hinge rod, a sleeve is rotationally connected to the inner wall of the circular ring, and a limiting assembly is arranged on the left side of the angle grinder body. According to the angle grinder, the lifting assembly is arranged, and the cylindrical rod is rotated to drive the sleeve to vertically move, so that the effect of adjusting the height of the grinding wheel is achieved, and the comfort of workers and the working efficiency of the angle grinder are improved.

Description

Technical Field

[0001] The utility model relates to the field of angle grinders, in particular to an angle grinder with adjustable length. Background Art

[0002] Angle grinder, also known as a grinding machine or a grinder, is a common power tool, usually used for cutting, grinding and polishing various materials. It is driven by an electric motor and completes the processing of the workpiece through a rotating grinding wheel.

[0003] After searching, Chinese patent announcement number: CN215470263U discloses a length-adjustable angle grinder. By pulling the sliding sleeve to change the appearance length of the sliding sleeve and the angle grinder, the length adjustment of the handle of the angle grinder is realized, which meets the requirements of the comfortable hand position of different operators, and increases the distance between the hand and the working end of the angle grinder, thereby improving the safety factor and facilitating use.

[0004] However, considering that when the existing angle grinders are used, since the grinding wheel is usually fixed on the angle grinder, it is usually difficult to adjust the height position of the grinding wheel relative to the angle grinder, which makes it inconvenient to use the angle grinder to perform specific depth cutting or grooving on the surface of the workpiece, resulting in reduced comfort for workers and reduced use effect of the angle grinder. Therefore, a length-adjustable angle grinder is proposed to solve the above problems. Utility Model Content

[0005] In order to remedy the above shortcomings, the utility model provides an angle grinder with adjustable length, aiming to improve the problem in the prior art that the height position of the grinding wheel relative to the angle grinder is usually not convenient to adjust, resulting in reduced comfort for workers and reduced use effect of the angle grinder.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an angle grinder with adjustable length, comprising an angle grinder body, a handle is fixedly connected to the right side of the angle grinder body, a rotating shaft is rotatably connected to the left bottom end of the angle grinder body, a lifting assembly is arranged on the left side of the angle grinder body, a grinding wheel is arranged on the lifting assembly, and an adjustment assembly is arranged on the handle;

[0007] The lifting assembly includes a cylindrical rod, the outer wall of the cylindrical rod is fixedly connected to a connecting rod, the bottom end of the connecting rod is hinged to an articulated rod, the bottom end of the articulated rod is hinged to a circular ring, the inner wall of the circular ring is rotatably connected to a sleeve, and a limiting assembly is arranged on the left side of the angle grinder body.

[0008] As a further description of the above technical solution:

[0009] The adjustment component comprises an extension tube, the front inner wall of the handle is elastically connected with a clamping block via a spring, and a clamping groove is provided on the front of the extension tube.

[0010] As a further description of the above technical solution:

[0011] The limiting assembly comprises a fixing ring, the top inner wall of the fixing ring is threadedly connected with a bolt, and the top right end of the cylindrical rod is provided with a threaded hole.

[0012] As a further description of the above technical solution:

[0013] The outer circumference of the cylindrical rod is rotatably connected to the left inner wall of the angle grinder body, the bottom end of the rotating shaft is fixedly connected with a fixed block, the inner wall of the sleeve is provided with a sliding groove, and the bottom end of the sleeve is fixedly connected to the top of the grinding wheel.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the extension tube is slidably connected to the outer periphery of the handle, one end of the spring is fixedly connected to the front inner wall of the handle, and the other end of the spring is fixedly connected to the outer wall of the block.

[0016] As a further description of the above technical solution:

[0017] The right side of the fixing ring is fixedly connected to the left side of the angle grinder body, the inner wall of the fixing ring is rotatably connected to the outer circumference of the cylindrical rod, and the outer wall of the bolt is threadedly connected to the inner wall of the threaded hole.

[0018] As a further description of the above technical solution:

[0019] The outer periphery of the rotating shaft is slidably connected to the inner wall of the sleeve, and the outer wall of the fixing block is slidably connected to the inner wall of the sliding groove.

[0020] As a further description of the above technical solution:

[0021] The outer wall of the clamping block is slidably connected to the inner wall of the front surface of the handle, and the outer wall of the clamping block is clamped to the inner wall of the clamping slot.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, a lifting assembly is provided, and the cylindrical rod is rotated to drive the connecting rod to rotate, so that the hinged rod drives the ring and the sleeve to move vertically, thereby achieving the effect of adjusting the height of the grinding wheel, thereby improving the comfort of the staff and the working efficiency of the angle grinder.

[0024] 2. In the utility model, an adjustment component is provided, and the fixing position of the extension tube is changed by engaging the clamping block with the clamping slots at different positions on the extension tube, thereby achieving the effect of adjusting the external length of the handle, thereby improving the comfort and safety of the angle grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of the length-adjustable angle grinder proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the split structure of the rotating shaft of the length-adjustable angle grinder proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the disassembled structure of the handle of the length-adjustable angle grinder proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of the split structure of the cylindrical rod of the length-adjustable angle grinder proposed by the utility model.

[0029] Legend:

[0030] 1. Angle grinder body; 2. Grinding wheel; 3. Rotating shaft; 4. Handle; 5. Lifting assembly; 51. Cylindrical rod; 52. Connecting rod; 53. Articulated rod; 54. Ring; 55. Sleeve; 56. Fixed block; 57. Slide groove; 58. Limiting assembly; 581. Fixed ring; 582. Bolt; 583. Threaded hole; 6. Adjusting assembly; 61. Extension tube; 62. Spring; 63. Block; 64. Slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 The utility model provides an embodiment: an angle grinder with adjustable length, including an angle grinder body 1, an electric motor is arranged in the angle grinder body 1, which can drive the rotating shaft 3 to rotate, a handle 4 is fixedly connected to the right side of the angle grinder body 1, and the angle grinder body 1 is used by a staff holding the handle 4, and the left bottom end of the angle grinder body 1 is rotatably connected to the rotating shaft 3, and the sleeve 55 is driven to rotate through the rotation effect of the rotating shaft 3, and a lifting component 5 is arranged on the left side of the angle grinder body 1, and the height position of the grinding wheel 2 is conveniently adjusted through the lifting component 5, and the grinding wheel 2 is arranged on the lifting component 5, and the handle 4 is provided with an adjusting component 6, and the outer length of the handle 4 is adjusted through the adjusting component 6.

[0033] Reference Figure 1 and Figure 2The lifting assembly 5 includes a cylindrical rod 51, and the outer wall of the cylindrical rod 51 is fixedly connected to a connecting rod 52. The rotation effect of the connecting rod 52 drives the hinged rod 53 to move. The bottom end of the connecting rod 52 is hinged to the hinged rod 53. The movement effect of the hinged rod 53 drives the ring 54 to move vertically. The bottom end of the hinged rod 53 is hinged to the ring 54. The movement effect of the ring 54 drives the sleeve 55 to slide along the outer circumference of the rotating shaft 3. The inner wall of the ring 54 is rotatably connected to the sleeve 55. The rotation effect of the sleeve 55 drives the grinding wheel 2 to rotate. A limiting assembly 58 is provided on the left side of the angle grinder body 1. The cylindrical rod 51 is limited by the limiting assembly 58, so that the height position of the grinding wheel 2 remains fixed.

[0034] Reference Figure 1 and Figure 3 The adjustment component 6 includes an extension tube 61. The outer walls of the extension tube 61 and the handle 4 are both provided with anti-slip grooves. The front inner wall of the handle 4 is elastically connected with a clamping block 63 through a spring 62. Under the elastic force of the spring 62, the clamping block 63 always maintains a clamping effect with the clamping groove 64 without being affected by external force, thereby limiting the extension tube 61. A clamping groove 64 is opened on the front of the extension tube 61. There are multiple groups of clamping grooves 64. The clamping effect of different positions is achieved by the multiple groups of clamping grooves 64 and the clamping block 63, thereby achieving a limiting effect on different positions of the extension tube 61.

[0035] Reference Figure 4 The limiting assembly 58 includes a fixing ring 581, and a bolt 582 is threadedly connected to the inner wall of the top of the fixing ring 581. By screwing the bolt 582, the bolt 582 and the threaded hole 583 are connected or disconnected. A threaded hole 583 is opened at the right end of the top of the cylindrical rod 51. There are multiple groups of threaded holes 583 distributed in a circular array. The connection effects of different positions with the bolts 582 are achieved through the multiple groups of threaded holes 583, and the limiting effects of different positions of the cylindrical rod 51 are achieved.

[0036] Reference Figure 1 and Figure 2 The outer periphery of the cylindrical rod 51 is rotatably connected to the left inner wall of the angle grinder body 1. The rotation effect of the cylindrical rod 51 drives the connecting rod 52 to rotate. The bottom end of the rotating shaft 3 is fixedly connected with a fixing block 56. The fixing effect of the fixing block 56 prevents the fixing block 56 from falling off. A sliding groove 57 is provided on the inner wall of the sleeve 55. The bottom end of the sleeve 55 is fixedly connected to the top of the grinding wheel 2. The fixing effect of the grinding wheel 2 prevents the grinding wheel 2 from falling off.

[0037] Reference Figure 3The inner wall of the extension tube 61 is slidably connected to the outer periphery of the handle 4. Through the sliding effect of the extension tube 61, the extension tube 61 can extend the apparent length of the handle 4. One end of the spring 62 is fixedly connected to the front inner wall of the handle 4, and the other end of the spring 62 is fixedly connected to the outer wall of the block 63. Through the fixing effect of the spring 62, the block 63 remains fixed to prevent the block 63 from falling off.

[0038] Reference Figure 1 and Figure 4 The right side of the fixing ring 581 is fixedly connected to the left side of the angle grinder body 1, and the fixing effect of the fixing ring 581 prevents the fixing ring 581 from falling off. The inner wall of the fixing ring 581 is rotatably connected to the outer circumference of the cylindrical rod 51, and the outer wall of the bolt 582 is threadedly connected to the inner wall of the threaded hole 583. The bolt 582 is connected to the threaded hole 583, so that the fixing ring 581 limits the cylindrical rod 51.

[0039] Reference Figure 2 The outer periphery of the rotating shaft 3 is slidably connected to the inner wall of the sleeve 55. The sliding effect of the sleeve 55 drives the grinding wheel 2 to move, thereby adjusting the position of the grinding wheel 2. The outer wall of the fixed block 56 is slidably connected to the inner wall of the slide groove 57. The fixed block 56 has a limiting effect on the sleeve 55, so that the rotating shaft 3 can drive the sleeve 55 to rotate.

[0040] Reference Figure 3 The outer wall of the block 63 is slidably connected to the inner wall of the front side of the handle 4. Through the sliding effect of the block 63, the block 63 and the slot 64 are engaged or released. The outer wall of the block 63 is engaged with the inner wall of the slot 64. Through the engagement effect of the block 63 and the slot 64, the handle 4 limits the extension tube 61.

[0041] Working principle: When the staff needs to use the angle grinder, the staff holds the extension tube 61, starts the angle grinder body 1, drives the rotating shaft 3 to rotate, and drives the fixed block 56 to rotate through the rotating shaft 3, so that the sleeve 55 drives the grinding wheel 2 to rotate, so that the staff can cut, grind, etc. on the workpiece.

[0042] When the staff needs to adjust the length of the handle 4 of the angle grinder body 1, the staff presses the block 63 to release the clamping effect of the block 63 and the clamping groove 64, and at the same time releases the limiting effect on the extension tube 61, and slides the extension tube 61 along the outer wall of the handle 4 to adjust the apparent length of the handle 4. When the adjustment is completed, the elastic force of the spring 62 causes the block 63 to be clamped with the clamping groove 64, and at the same time limits the extension tube 61, so that the extension tube 61 remains fixed.

[0043] When the staff needs to adjust the height of the grinding wheel 2, the staff loosens the bolt 582 to release the limiting effect of the cylindrical rod 51, rotates the cylindrical rod 51, and causes the connecting rod 52 to drive the hinged rod 53 to move, thereby driving the ring 54 and the sleeve 55 to move vertically, so that the height position of the grinding wheel 2 is adjusted. When the adjustment is completed, the staff tightens the bolt 582 and limits the cylindrical rod 51 at the same time, so that the height position of the grinding wheel 2 remains fixed.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An angle grinder with adjustable length, comprising an angle grinder body (1), characterized in that: A handle (4) is fixedly connected to the right side of the angle grinder body (1); a rotating shaft (3) is rotatably connected to the left bottom end of the angle grinder body (1); a lifting assembly (5) is arranged on the left side of the angle grinder body (1); a grinding wheel (2) is arranged on the lifting assembly (5); and an adjusting assembly (6) is arranged on the handle (4); The lifting assembly (5) comprises a cylindrical rod (51), the outer wall of the cylindrical rod (51) is fixedly connected to a connecting rod (52), the bottom end of the connecting rod (52) is hinged to a hinge rod (53), the bottom end of the hinge rod (53) is hinged to a circular ring (54), the inner wall of the circular ring (54) is rotatably connected to a sleeve (55), and a limit position assembly (58) is provided on the left side of the angle grinder body (1).

2. The length-adjustable angle grinder according to claim 1, characterized in that: The adjustment assembly (6) comprises an extension tube (61), the front inner wall of the handle (4) is elastically connected to a clamping block (63) via a spring (62), and a clamping groove (64) is provided on the front of the extension tube (61).

3. The length-adjustable angle grinder according to claim 1, characterized in that: The limiting assembly (58) comprises a fixing ring (581), the top inner wall of the fixing ring (581) is threadedly connected with a bolt (582), and a threaded hole (583) is formed at the top right end of the cylindrical rod (51).

4. The length-adjustable angle grinder according to claim 1, characterized in that: The outer periphery of the cylindrical rod (51) is rotatably connected to the left inner wall of the angle grinder body (1); the bottom end of the rotating shaft (3) is fixedly connected to a fixed block (56); the inner wall of the sleeve (55) is provided with a sliding groove (57); and the bottom end of the sleeve (55) is fixedly connected to the top of the grinding wheel (2).

5. The length-adjustable angle grinder according to claim 2, characterized in that: The inner wall of the extension tube (61) is slidably connected to the outer periphery of the handle (4), one end of the spring (62) is fixedly connected to the front inner wall of the handle (4), and the other end of the spring (62) is fixedly connected to the outer wall of the clamping block (63).

6. The length-adjustable angle grinder according to claim 3, characterized in that: The right side of the fixing ring (581) is fixedly connected to the left side of the angle grinder body (1), the inner wall of the fixing ring (581) is rotatably connected to the outer circumference of the cylindrical rod (51), and the outer wall of the bolt (582) is threadedly connected to the inner wall of the threaded hole (583).

7. The length-adjustable angle grinder according to claim 4, characterized in that: The outer periphery of the rotating shaft (3) is slidably connected to the inner wall of the sleeve (55), and the outer wall of the fixing block (56) is slidably connected to the inner wall of the sliding groove (57).

8. The length-adjustable angle grinder according to claim 5, characterized in that: The outer wall of the clamping block (63) is slidably connected to the inner wall of the front face of the handle (4), and the outer wall of the clamping block (63) is clamped to the inner wall of the clamping groove (64).

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