阅读说明：本技术 一种设有集尘装置的手持式电动工具防护罩 (hand-held type electric tool protection casing with dust collecting device ) 是由 王新元 于 2019-09-15 设计创作，主要内容包括：本发明公开了一种设有集尘装置的手持式电动工具防护罩,其特征是：所述防护罩外侧壁2-1与储尘器3的内端面3-8可拆卸连接,所述侧壁2设有出尘口2-4,所述出尘口2-4与储尘器3的进尘口3-1位置相对应,所述储尘器3内设有储尘腔3-6,储尘器3至少一个面或一个面的一部分为透气材质或设有排气孔,所述储尘器3至少有一个面是可以打开的。在防护罩外侧壁设置的储尘器,具有占用空间小、集尘效果好、易操作等特点,有利于减小操作者工作中粉尘的污染,对工厂周边空气质量的提高大有益处。(The invention discloses a hand-held electric tool protective cover with a dust collecting device, which is characterized in that: the outer side wall 2-1 of the protective cover is detachably connected with an inner end face 3-8 of the dust storage device 3, the side wall 2 is provided with a dust outlet 2-4, the dust outlet 2-4 corresponds to a dust inlet 3-1 of the dust storage device 3 in position, a dust storage cavity 3-6 is arranged in the dust storage device 3, at least one face or one part of one face of the dust storage device 3 is made of breathable materials or is provided with an exhaust hole, and at least one face of the dust storage device 3 can be opened. The dust storage device arranged on the outer side wall of the protective cover has the characteristics of small occupied space, good dust collection effect, easiness in operation and the like, is favorable for reducing dust pollution of operators during work, and is beneficial to improving the quality of air around a factory.)

1. The utility model provides a hand-held type electric tool protection casing with dust collecting device, includes upper cover plate (1), lateral wall (2) and apron (4) down, upper cover plate (1) is fan-shaped, lateral wall (2) are connected with the convex limit of upper cover plate (1), inside wall (2-2) are convex and the circular arc radius is a fixed numerical value with the connecting wire of upper cover plate (1), inside wall (2-2) do not have for protruding or sunken (2-24) on inside wall (2-2) surface, characterized by: the outer side wall (2-1) of the protective cover is detachably connected with an inner end face (3-8) of the dust storage device (3), the side wall (2) is provided with a dust outlet (2-4), the dust outlet (2-4) corresponds to the position of a dust inlet (3-1) of the dust storage device (3), a dust storage cavity (3-6) is arranged in the dust storage device (3), at least one face or one part of one face of the dust storage device (3) is made of breathable materials or is provided with an exhaust hole, and at least one face of the dust storage device (3) can be opened;

The detachable connection comprises threaded connection and clamping connection;

The included angle (a) between the first side face (3-4) and the second side face (3-11) is 25-230 degrees; the arc radius of the inner end surface (3-8) is between 35 and 165 mm; the height of the dust storage device (3) is between 8 and 50 mm.

2. The hand held power tool guard with a dust collection device of claim 1, wherein: the inner side wall (2-2) is provided with a bulge or/and a depression (2-24) relative to the surface of the inner side wall (2-2);

Or/and the arc radius value of the connecting line of the inner side wall (2-2) and the upper cover plate (1) is 2 or more than 2;

Or/and the connecting lines of the side wall (2) and the lower cover plate (4) are not in the same plane;

or/and the connecting lines of the side wall (2) and the upper cover plate (1) are not in the same plane;

the depressions (2-24) on the surface of the inner side wall (2-2) are in a hole shape and are blind holes;

The height from the highest point of the protrusion to the normal direction of the inner side wall (2-2) is between 1 and 15mm, the depth from the lowest point of the recess (2-24) to the normal direction of the inner side wall (2-2) is between 0.2 and 11mm, and the value of the circular arc radius of a connecting line of the side wall (2) and the upper cover plate (1) is between 25 and 165 mm.

3. A hand held power tool guard provided with a dust collecting device according to claim 1 or/and claim 2, wherein: the side wall (2) and the dust storage device (3) are of an integral structure, the inner side wall (2-2) is an inner end face (3-8) of the dust storage device (3), and the integral structure is detachably connected with the upper cover plate (1);

Or/and the speed reducers (2-21) or/and the recesses (2-24) and the side wall (2) are of an integral structure which is detachably connected with the upper cover plate (1);

The integrated structure is a non-detachable structure, and the detachable connection mode comprises threaded connection and clamping connection.

4. The hand held power tool guard with a dust collection device of claim 1, wherein: the dust inlet (3-1) is provided with a baffle (3-7), the baffle (3-7) can rotate around the fixed end (3-71) towards the dust storage cavity (3-6) under the action of wind power, and the dust inlet (3-1) is blocked in a normal state.

5. the hand held power tool guard with a dust collection device of claim 1, wherein: the dust storage chamber (3-6) is provided with a moisture-retaining object which comprises a fabric or/and a sponge.

6. a hand held power tool guard provided with a dust collecting device according to claim 1 or/and claim 5, wherein: the dust storage box is characterized in that a water inlet is formed in the upper surface of the dust storage box (3), a water storage bottle (3-9) is arranged at the position of the water inlet, the water storage bottle (3-9) is made of rubber, and water can enter the dust storage cavity (3-6) in a foggy or water-drop mode through manual extrusion.

7. The hand held power tool guard with a dust collection device of claim 1, wherein: the inner end face (3-8) of the dust storage device (3) is provided with a positioning pin or a hook (3-2) which is matched with a positioning pin hole (2-5) of the side wall (2).

8. The hand held power tool guard with a dust collection device of claim 1, wherein: the dust outlet (2-4) is detachably connected with a dust storage bag, at least one surface or one part of one surface of the dust storage bag is made of breathable materials, and the dust storage bag is detachably fixed in the dust storage device (3) or detachably fixed on the outer side wall (2-1);

When the dust storage bag is detachably fixed in the dust storage device (3), the dust storage device (3) is arranged on the outer side wall (2-2), the dust storage device (3) is only a containing body of the dust storage bag, one surface of the dust storage device (3) can be opened or one or more surfaces can be omitted, when all surfaces are omitted, the dust storage device (3) is a frame body, and the positioning pin or the hook (3-2) is arranged on the frame body;

When the dust storage bag is detachably fixed on the outer side wall (2-1), the dust storage bag is provided with an inner end surface (3-8) or/and a positioning pin (3-2) matched with a positioning pin hole (2-4) of the side wall (2), and the dust storage device (3) is omitted;

The arrangement comprises connection and detachable connection, and the detachable connection and the detachable fixation comprise screw fixation and clamping connection;

The positioning pin or the hook (3-2) and the positioning pin hole (2-4) can be replaced, namely the positioning pin or the hook (3-2) is arranged on the side wall (2), and the positioning pin hole (2-4) is arranged on the dust storage device (3) or the dust storage bag.

9. The hand held power tool guard with a dust collection device of claim 1, wherein: the dust storage device (3) is provided with an air inlet pipe (7), the other end of the air inlet pipe (7) is connected with an outlet of cooling air of a motor of the handheld electric tool, and a water curtain and a water tank are arranged at the outlet of the cooling air of the motor of the handheld electric tool.

10. The hand held power tool guard with a dust collection device of claim 1, wherein: at least one surface or part of one surface of the dust storage device (3) is provided with a magnetic material, the magnetic material is detachable, or the magnetic force of the magnetic material can be counteracted, or the magnetic material is an electromagnet.

the technical field is as follows:

The invention relates to a hand-held electric tool accessory, in particular to a protective cover of hand-held electric tools such as an angle grinder, an electric circular saw and the like. In addition, the dust pollution area of the handheld electric tool can be reduced, dust generated by the handheld electric tool can be collected, and pollution damage of the dust to the environment can be reduced, so that the dust collector also relates to the field of environmental protection.

Technical background:

At present, various handheld electric (pneumatic) tools are more and more widely applied, for example, an angle grinder is taken as an example, the handheld electric (pneumatic) tools are small in structure and flexible to operate, can finish various works such as cutting, grinding, polishing and the like, and are widely used in various industries, for example, in a mechanical factory, a pincer worker, a milling worker, a numerical control worker and an assembly worker are provided with the angle grinder, the works such as deburring and angle grinding can be finished directly by the angle grinder, and the workload of positioning, clamping and processing a workpiece on a machine tool is reduced. However, these hand-held power tools also have some drawbacks and deficiencies, such as: the existing angle grinder can generate a large amount of dust during working, and the dust can fly out at a high speed in the tangential direction of an outlet of the protective cover when leaving the protective cover due to the high rotating speed (generally over 10000 revolutions) of the angle grinder, the flying distance of the dust can reach 5 meters or even more, the dust has serious pollution to the working environment, and the pollution area is very large.

Description of the drawings:

Fig. 1 is a schematic structural view of a protective cover of the prior art.

FIG. 2 is a schematic view of a protective cover with a speed reducer.

fig. 3 is a schematic view of the structure of the dust container.

Figure 4 is a cross-sectional view of the dust reservoir.

FIG. 5 is a front view of the speed reducer and the boot.

fig. 6 is a schematic structural view of the inner side wall of the shield cover provided with a recess.

fig. 7 is a structural diagram of the connecting line of the side wall of the protective cover and the upper cover plate, which is not in the same plane.

Fig. 8 is a schematic structural view showing that the connecting line between the side wall and the upper cover plate is not a sector.

Figure 9 is a top view of the dust reservoir.

FIG. 10 is a schematic view of the structure of the dust storage device with an angle of 180 degrees between the first side and the second side.

FIG. 11 is a schematic view of the structure of the side wall with the dust outlet tube and the hose.

fig. 12 is a schematic view of the structure of the dust box.

FIG. 13 is a schematic view of the structure of the side wall integrated with the dust container and detachably connected with the upper cover plate of the shield.

Fig. 14 is a schematic view of the structure of the hose passing through the angle grinder fixing tube.

FIG. 15 is a schematic view of a dust bin or bag removably secured to the surface of the angle grinder housing adjacent the rear portion and on the side of the angle grinder at which the angle grinder plate is located.

FIG. 16 is a view showing the positional relationship of the dust box on the surface of the housing of the angle grinder.

Fig. 17 is a schematic structural view of the dust storage box or the dust storage bag arranged on the surface of the tail part of the shell.

In the above drawings, 1 an upper cover plate of a protective cover, 1 a screw hole on the surface of the upper cover plate, 1 a fixed ring, 1 a movable ring, 2 a side wall of a protective cover, 2 a 1 outer side wall, 2 a 2 inner side wall, 2 a 21 inner side wall surface of a speed reducer, a rising end of a 2-211 speed reducer, a falling end of a 2-212 speed reducer, a recess on the surface of a 2-24 inner side wall, a dust outlet on the surface of a 2-4 inner side wall, 2-5 positioning pin holes, a 3 dust storage, 3-1 dust inlet, 3-2 positioning pins, a lower end surface of a 3-3 dust storage, a first side surface of a 3-4 dust storage, an outer end surface of a 3-5 dust storage, a 3-6 dust storage cavity, a 3-7 dust inlet baffle, a fixed end of a 3-71 baffle, and a movable end of a 3-72 baffle, 3-8 inner end surface of dust storage device, 3-9 water storage bottle, 3-11 side surface of dust storage device, 4 lower cover plate of protective cover, 5 dust outlet pipe, 5-1 dust baffle plate positioned in inner side wall, 5-2 movable baffle plate of dust outlet pipe, 6 dust storage box, 6-1 dust inlet pipe, 6-2 exhaust pipe, top of 6-3 dust storage box, 6-4 part of dust storage box side close to top, 6-5 bottom of dust storage box, 6-6 end surface of dust storage box, 7 air inlet pipe, 8 structure integrating dust storage device and side wall, 8-1 inner side wall integrating dust storage device and side wall, 8-2 dust inlet hole integrating dust storage device and side wall, 8-3 end surface integrating dust storage device and side wall, 8-4 fixing screw hole integrating dust storage device and side wall, 9 hoses, 10 angle grinders (not marked in the drawing), 10-1 angle grinder shell (motor shell), 10-2 fixed pipes which are positioned on the surface of the shell and are in the same direction with the angle grinding pieces, 10-3 angle grinding pieces, 10-4 angle grinder protective covers, 10-5 angle grinder shell tail parts, 10-6 angle grinder power supply wire inlets positioned on the tail parts of the shells, 10-7 angle grinder power supply wires, 10-8 angle grinder motor cooling air inlets, and included angles between a side surface I and a side surface II.

The specific implementation mode is as follows:

In this specification, the dust storage 3 is different from the dust storage box 6 and the dust storage bag in that: the dust storage device 3 can be detachably connected with the outer side wall 2-2 of the protective cover by adopting a hook, a nylon thread gluing, a threaded connection, a clamping connection and the like; the dust storage box 6 is not arranged (including fixed and detachable fixed) outside the outer side wall 2-2 and needs to be connected by a hose; dust bags are not capable of holding objects that can retain moisture.