Angle grinder with high safety

Abstract

The utility model discloses a high-safety angle grinder which comprises a base, a protection box fixedly installed on the top of the base, discharging openings formed in the two sides of the protection box, an operation opening formed in the front face of the protection box, a transparent window fixedly installed on the top of the protection box and an exhaust fan movably installed on the top of the back face of the protection box. The top of the front face of the protection box is in threaded connection with a plurality of positioning bolts, two sliding columns are fixedly installed at the top of an inner cavity of the protection box, sliding seats are slidably installed on the outer sides of the two sliding columns, and supporting cylinders are fixedly installed at the bottoms of the sliding seats. Through the arrangement of the exhaust fan and the protection box, a lot of smoke dust and sparks generated during angle grinder operation are blocked by the protection box, an operator observes and works through the transparent window, the operator is protected, meanwhile, the smoke dust and sparks can be blocked from splashing, smoke dust particles are extracted through the exhaust fan at the moment, and the environment is protected. The situation of directly catching the mouth and nose of an operator is avoided, and the protection strength is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle grinder accessories, in particular to an angle grinder with high safety. 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. It is mainly used for cutting, grinding and brushing metal and stone. Common models of angle grinders are divided into 100 mm (4 inches), 125 mm (5 inches), 150 mm (6 inches), 180 mm (7 inches) and 230 mm (9 inches) according to the specifications of the accessories used. The small-size angle grinders used in Europe and the United States are 115 mm.

[0003] In the process of using the angle grinder, manual operation is usually required to operate the objects that need to be grinded and cut. A lot of smoke or sparks will be generated during the operation. If the operation is improper, it will cause harm to the operator. At the same time, if the operator works for a long time, his hands may become sore and the handle may slip out of his hand, resulting in accidents, threatening the safety of the operator and causing inconvenience in use. Based on this, we propose an angle grinder with high safety. Utility Model Content

[0004] The purpose of the utility model is to provide an angle grinder with high safety to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly safe angle grinder, comprising a base, a protection box fixedly installed on the top of the base, discharge ports are arranged on both sides of the protection box, an operation port is arranged on the front of the protection box, a transparent window is fixedly installed on the top of the protection box, an exhaust fan is movably installed on the top of the back of the protection box, a plurality of positioning bolts are threadedly connected to the top of the front of the protection box, two sliding columns are fixedly installed on the top of the inner cavity of the protection box, a sliding seat is slidably installed on the outer sides of the two sliding columns, a support tube is fixedly installed on the bottom of the slide seat, and a rotating sleeve is movably sleeved inside the support tube. The swivel seat and the support tube have a plurality of bearing balls movably mounted on opposite sides thereof, an outer tube is fixedly mounted on the bottom of the swivel seat, a hollow inner column is movably sleeved inside the outer tube, an air pressure chamber is arranged inside the hollow inner column, a piston is movably sleeved inside the hollow inner column, an elastic mechanism is fixedly mounted on the top of the piston, a universal hinge is hinged on the bottom of the hollow inner column, a support ring is hinged on the bottom of the universal hinge, a fixed bearing is fixedly sleeved on the inner side of the support ring, an angle grinder body is arranged inside the fixed bearing, a positioning spring is fixedly mounted on the bottom of the support ring, and a slide rod is fixedly mounted inside the protective box.

[0006] Preferably, the positioning bolts are linearly and evenly distributed on the top of the protection box, and the threads of the positioning bolts penetrate the protection box and extend to the interior of the slide seat.

[0007] Preferably, the bearing balls are evenly distributed on opposite sides of the rotating seat and the support tube in a circumferential manner, and the outer tube is movably sleeved to pass through the interior of the support tube.

[0008] Preferably, the air pressure chamber is a positive pressure filling chamber, and the air pressure chamber is located on opposite sides of the outer cylinder and the hollow inner column.

[0009] Preferably, the top of the elastic mechanism is fixedly mounted on the top of the inner cavity of the outer cylinder.

[0010] Preferably, the bottom end of the positioning spring is movably sleeved on the outer side of the slide rod via a sleeve ring.

[0011] Compared with the prior art, the beneficial effect of the utility model is that when the equipment is in use, the operator first places the material to be ground inside the protection box through the discharge port, and then operates the angle grinder body through the operation port. At this time, the angle grinder body moves under the operation of the operator, and can be moved downward if it needs to be stretched, and the hollow inner column is driven downward by the fixed bearing and the support ring, and the hollow inner column slides inside the outer cylinder and is subjected to the elastic force of the elastic mechanism and the air pressure chamber, which can help the operator to stabilize the position. When the angle grinder body rotates, the angle grinder body can be rotated by the support of the support ring and the base, and the lateral angle can be adjusted by the universal hinge joint and the support cylinder, and the circular rotation adjustment angle can be performed under the support of the swivel seat and the bearing ball. When adjusting the grinding position, the sliding slide seat and the positioning spring can be used to make the sliding seat and the positioning spring slide under the support of the sliding column and the sliding rod respectively, and after moving, they can be inserted into the protective box and the fixed position inside the slide seat by the positioning bolt. This scheme ensures that the multi-directional flexibility will not hinder the operation, and at the same time provides protection for the operator, avoiding the injury caused by losing the hands, and the overall safety is high and the use effect is good.

[0012] Through the exhaust fan and protection box, a lot of smoke and sparks are generated during the angle grinding operation, which are blocked by the protection box. The workers observe and work through the transparent window, which protects the workers while blocking the flying of smoke and sparks. At this time, the smoke and dust particles are extracted by the exhaust fan to avoid directly hitting the mouth and nose of the workers, further increasing the protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front three-dimensional appearance structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the rear-view stereoscopic appearance structure of the utility model.

[0015] Figure 3It is a right side sectional structural schematic diagram of the utility model.

[0016] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. base; 2. discharge port; 3. protection box; 4. sliding column; 5. transparent window; 6. positioning bolt; 7. sliding rod; 8. operation port; 9. exhaust fan; 10. sliding seat; 11. positioning spring; 12. supporting ring; 13. fixed bearing; 14. universal hinge; 15. swivel seat; 16. supporting cylinder; 17. elastic mechanism; 18. hollow inner column; 19. air pressure chamber; 20. piston; 21. outer cylinder; 22. bearing ball; 23. angle grinder body. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a high-safety angle grinder, including a base 1, a protection box 3 is fixedly installed on the top of the base 1, discharge ports 2 are arranged on both sides of the protection box 3, an operation port 8 is arranged on the front of the protection box 3, a transparent window 5 is fixedly installed on the top of the protection box 3, an exhaust fan 9 is movably installed on the top of the back of the protection box 3, a plurality of positioning bolts 6 are threadedly connected to the top of the front of the protection box 3, two sliding columns 4 are fixedly installed on the top of the inner cavity of the protection box 3, a sliding seat 10 is slidably installed on the outer sides of the two sliding columns 4, a support tube 16 is fixedly installed on the bottom of the sliding seat 10, a rotating seat 15 is movably sleeved inside the supporting tube 16, and the rotating seat 15 and the supporting tube 16 are mutually connected. A plurality of bearing balls 22 are movably installed on the opposite side, an outer cylinder 21 is fixedly installed at the bottom of the swivel seat 15, a hollow inner column 18 is movably sleeved inside the outer cylinder 21, an air pressure chamber 19 is arranged inside the hollow inner column 18, a piston 20 is movably sleeved inside the hollow inner column 18, an elastic mechanism 17 is fixedly installed on the top of the piston 20, a universal hinge 14 is hinged at the bottom of the hollow inner column 18, a support ring 12 is hinged at the bottom of the universal hinge 14, a fixed bearing 13 is fixedly sleeved on the inner side of the support ring 12, an angle grinder body 23 is arranged inside the fixed bearing 13, a positioning spring 11 is fixedly installed at the bottom of the support ring 12, and a slide rod 7 is fixedly installed inside the protective box 3.

[0020] The working principle of the above technical solution is as follows: when in use, the operator first places the material to be ground inside the protective box 3 through the discharge port 2, and then operates the angle grinder body 23 through the operation port 8. At this time, the angle grinder body 23 moves under the operation of the operator, and can be moved downward if it needs to be stretched. The hollow inner column 18 is driven downward by the fixed bearing 13 and the support ring 12. The hollow inner column 18 slides inside the outer cylinder 21 and is subject to the elastic force of the elastic mechanism 17 and the air pressure chamber 19, which can help the operator stabilize the position. When the angle grinder body 23 rotates, it can be supported by the support ring 12 and the base 1 to rotate at an angle The grinder body 23 can adjust the lateral angle through the universal hinge joint 14 and the support tube 16, and adjust the angle by circular rotation under the support of the swivel seat 15 and the bearing ball 22. When adjusting the grinding position, the sliding slide 10 and the positioning spring 11 can be used to make the slide 10 and the positioning spring 11 slide under the support of the slide column 4 and the slide rod 7 respectively. After moving, the positioning bolt 6 can be inserted into the protective box 3 and the slide 10 to fix the position inside. This solution ensures that the multi-directional flexibility will not hinder the operation, and at the same time provides protection for the operator to avoid injuries caused by losing the hands. The overall safety is high and the use effect is good.

[0021] In another embodiment, Figure 1-Figure 4 As shown, the positioning bolts 6 are evenly distributed on the top of the protection box 3 in a linear manner, and the threads of the positioning bolts 6 penetrate through the protection box 3 and extend to the interior of the slide seat 10 .

[0022] The thread of the positioning bolt 6 passes through the protection box 3 and extends to the slide seat 10 to ensure that the slide seat 10 is fixed in the required position when necessary. Through the exhaust fan 9 and the protection box 3, a lot of smoke and sparks are generated during the angle grinding operation, which are blocked by the protection box 3. The operator observes and works through the transparent window 5, which protects the operator while blocking the splashing of smoke and sparks. At this time, the smoke particles are extracted by the exhaust fan 9 to avoid directly hitting the operator's mouth and nose, further increasing the protection.

[0023] In another embodiment, Figure 4 As shown, the bearing balls 22 are evenly distributed on the opposite sides of the rotating seat 15 and the support tube 16 in a circumferential manner, and the outer tube 21 is movably sleeved and penetrates the interior of the support tube 16.

[0024] The bearing balls 22 can facilitate the rotation of the swivel seat 15 under the support of the support tube 16, and facilitate the circular rotation of the bottom structure, so that the overall use effect is good and the flexibility is increased.

[0025] In another embodiment, Figure 4 As shown, the air pressure chamber 19 is a positive pressure filled air chamber, and the air pressure chamber 19 is located on the opposite side of the outer cylinder 21 and the hollow inner column 18.

[0026] The air pressure of the air pressure chamber 19 and the elastic force of the elastic mechanism 17 can keep the internal structure stable, making the overall structure stable, facilitating the stabilization of the position of the angle grinder body 23, increasing the operating feel and helping to protect the operator.

[0027] In another embodiment, Figure 4 As shown, the top of the elastic mechanism 17 is fixedly installed on the top of the inner cavity of the outer cylinder 21.

[0028] After the elastic mechanism 17 is fixed, it is convenient to apply elastic force to the piston 20 to stabilize the position and apply the force.

[0029] In another embodiment, Figure 3 As shown, the bottom end of the positioning spring 11 is movably sleeved on the outer side of the slide rod 7 through a sleeve ring.

[0030] The positioning spring 11 stabilizes the bottom position of the support ring 12 and can be shaken and moved in coordination with the operation. The overall effect is good, and it is convenient to stabilize the bottom position and cooperate with the elastic structure above to increase the operational feel.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly safe angle grinder, comprising a base (1), characterized in that: A protection box (3) is fixedly mounted on the top of the base (1), discharge ports (2) are arranged on both sides of the protection box (3), an operation port (8) is arranged on the front of the protection box (3), a transparent window (5) is fixedly mounted on the top of the protection box (3), an exhaust fan (9) is movably mounted on the top of the back of the protection box (3), a plurality of positioning bolts (6) are threadedly connected to the top of the front of the protection box (3), two sliding columns (4) are fixedly mounted on the top of the inner cavity of the protection box (3), a sliding seat (10) is slidably mounted on the outer sides of the two sliding columns (4), a support tube (16) is fixedly mounted on the bottom of the sliding seat (10), a rotating seat (15) is movably sleeved inside the supporting tube (16), and a plurality of bearing balls (22) are movably mounted on the opposite sides of the rotating seat (15) and the supporting tube (16). The bottom of the rotating seat (15) is fixedly mounted with an outer cylinder (21), the inner part of the outer cylinder (21) is movably sleeved with a hollow inner column (18), the interior of the hollow inner column (18) is provided with an air pressure chamber (19), the inner part of the hollow inner column (18) is movably sleeved with a piston (20), the top of the piston (20) is fixedly mounted with an elastic mechanism (17), the bottom of the hollow inner column (18) is hinged with a universal hinge (14), the bottom of the universal hinge (14) is hinged with a support ring (12), the inner side of the support ring (12) is fixedly sleeved with a fixed bearing (13), the interior of the fixed bearing (13) is provided with an angle grinder body (23), the bottom of the support ring (12) is fixedly mounted with a positioning spring (11), and the interior of the protective box (3) is fixedly mounted with a sliding rod (7).

2. The angle grinder with high safety according to claim 1, characterized in that: The positioning bolts (6) are evenly distributed on the top of the protection box (3) in a linear manner, and the threads of the positioning bolts (6) penetrate through the protection box (3) and extend to the interior of the slide seat (10).

3. The angle grinder with high safety according to claim 1, characterized in that: The bearing balls (22) are evenly distributed on the opposite sides of the rotating seat (15) and the support tube (16) in a circumferential manner, and the outer tube (21) is movably sleeved and penetrates the interior of the support tube (16).

4. The angle grinder with high safety according to claim 1, characterized in that: The air pressure chamber (19) is a positive pressure filling chamber, and the air pressure chamber (19) is located on the opposite side of the outer cylinder (21) and the hollow inner column (18).

5. The angle grinder with high safety according to claim 1, characterized in that: The top of the elastic mechanism (17) is fixedly mounted on the top of the inner cavity of the outer cylinder (21).

6. The angle grinder with high safety according to claim 1, characterized in that: The bottom end of the positioning spring (11) is movably sleeved on the outer side of the slide rod (7) via a sleeve ring.

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