Shield assembly and angle grinder

Abstract

The utility model relates to a shield assembly and an angle grinder, the shield assembly is used for the angle grinder, and the shield assembly comprises a mounting ring and a shield body connected to the mounting ring, the protective cover body is provided with a first wall part and a second wall part, the first wall part radially extends from the periphery of the mounting ring along the center line of the mounting ring, the second wall part axially extends from the end part of the first wall part along the center line, and the protective cover assembly is provided with a visual system mounted on the protective cover body; the shield body is provided with a first opening penetrating through the first wall part and a second opening penetrating through the second wall part, the visual system is provided with a first perspective part contained in the first opening and a second perspective part contained in the second opening, the shield body shields an operation wheel of the angle grinder, and a user observes the operation wheel through the first perspective part and the second perspective part.

Description

[Technical field]

[0001] The utility model relates to the technical field of electric tools, in particular to a shield component and an angle grinder. [Background Technology]

[0002] An angle grinder is an electric tool that uses a motor to provide a power source, thereby driving a transmission component to drive a working wheel to perform grinding or cutting operations. The guard assembly is often installed on the angle grinder and at least partially covers the outer circumference of the working wheel of the angle grinder to protect the safety of the operator.

[0003] Existing guard assembly and angle grinder such as Figure 4 As shown: the shield assembly 100 is made of a non-transparent metal material, and a working wheel is covered inside the shield assembly 100. However, the user cannot observe the working wheel 5 and the workpiece being processed when operating the angle grinder 400, and the rotation speed of the working wheel 5 is as high as tens of thousands of revolutions. If there is a deviation in the direction of the force applied to the working wheel 5, it is easy to cause jamming, which may lead to danger.

[0004] In view of this, it is determined to be necessary to provide an improved guard assembly and angle grinder to overcome the defects of the prior art. [Contents of the utility model]

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a guard assembly and an angle grinder with good user experience and high safety performance.

[0006] The utility model solves the problems of the prior art by adopting the following technical solutions: a shield assembly for an angle grinder, the shield assembly comprising a mounting ring and a shield body connected to the mounting ring, the shield body having a first wall portion radially extending from the outer periphery of the mounting ring along the center line of the mounting ring and a second wall portion axially extending from the end of the first wall portion along the center line, the shield assembly is provided with a visual system installed on the shield body, the shield body having a first opening passing through the first wall portion and a second opening passing through the second wall portion, the visual system having a first perspective portion accommodated in the first opening and a second perspective portion accommodated in the second opening, the shield body shielding the working wheel of the angle grinder, and a user observes the working wheel via the first perspective portion and the second perspective portion.

[0007] A further improved solution is: a fastening plate is connected to the end of the mounting ring, the shield body has a first end close to the fastening plate and a second end arranged opposite to the first end, and the first perspective portion and the second perspective portion are located between the first end and the second end.

[0008] A further improved solution is: the area of ​​the first perspective portion is smaller than the area of ​​the second perspective portion, and the two ends of the first perspective portion are located between the two ends of the second perspective portion.

[0009] A further improved solution is: the first perspective portion has an end surface that extends straight and / or curved, and the second perspective portion has an end surface that extends straight and curved.

[0010] A further improvement is that the shield assembly includes a first plane parallel to the center line, and the first plane passes through the first perspective portion and the second perspective portion at the same time.

[0011] A further improvement is that the first perspective portion and the second perspective portion are made of transparent plastic or transparent glass.

[0012] A further improvement is as follows: the visual system comprises a first cover shell for accommodating the first perspective portion and a second cover shell for accommodating the second perspective portion, the first cover shell is mounted on the first opening, and the second cover shell is mounted on the second opening.

[0013] A further improvement is as follows: a first inner frame is formed on the inner side of the first cover shell, a second inner frame is formed on the inner side of the second cover shell, the first perspective portion is installed on the first inner frame, and the second perspective portion is installed on the second inner frame.

[0014] A further improvement is as follows: the first inner frame is formed by the first rib and the second rib, and the second inner frame is formed by the third rib and the fourth rib.

[0015] The utility model can also adopt the following technical solution to solve the existing technical problems: an angle grinder includes a casing, and the angle grinder includes any of the above-mentioned shield components.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a first visual mechanism located in the axial direction and a second visual mechanism located in the circumferential direction are respectively provided on the guard assembly of the angle grinder, so that the user can observe the position of the working wheel in real time when using the angle grinder, and when the working wheel is stuck by the workpiece, the user can immediately stop the machine to adjust the position of the working wheel, thereby reducing the probability of danger and improving the user's operating experience; the first visual mechanism is composed of a first cover shell and a first perspective part, and the second visual mechanism is composed of a second cover shell and a second perspective part, and the first visual mechanism and the second visual mechanism are detachably mounted on the first opening and the second opening on the guard body, with a simple structure and easy disassembly and assembly; the first perspective part and the second perspective part are made of transparent plastic or transparent glass, and the manufacturing cost is relatively low. [Drawings]

[0017] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the angle grinder in the utility model;

[0019] Figure 2 yes Figure 3 A schematic diagram of the structure of a guard assembly in an angle grinder shown;

[0020] Figure 3 yes Figure 2 An exploded schematic diagram of the shield assembly shown;

[0021] Figure 4 It is a structural schematic diagram of an existing guard assembly and an angle grinder in the background technology;

[0022] Meaning of the reference numerals in the figures:

[0023] Guard assembly 100 Mounting ring 1

[0024] Fastening plate 11 Center hole 12

[0025] Shield body 2 first end 2a

[0026] Second end 2b First wall portion 21

[0027] First opening 211 Second wall portion 22

[0028] Second opening 221 Third wall portion 23

[0029] Visual system 3 First visual mechanism 31

[0030] First housing 311 First rib 311a

[0031] Second rib 311b First inner frame 311c

[0032] First perspective part 312 Second visual mechanism 32

[0033] Second cover 321 Third rib 321a

[0034] Fourth rib 321b Second inner frame 321c

[0035] Second perspective part 322 Angle grinder 400

[0036] Casing 4 Main housing 41

[0037] Head shell 42 Working wheel 5

[0038] Centerline X First plane P [Specific implementation method]

[0039] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0040] See also Figure 1 An embodiment of the utility model relates to an angle grinder 400, including a casing 4, a driving assembly (not shown) accommodated in the casing 4, and a shield assembly 100 connected to the front end of the casing 4. Specifically, the casing 4 includes a main shell 41 and a head shell 42 detachably connected to the main shell 41, and the shield assembly 100 is installed at the end of the head shell 42; further, the driving assembly is driven by the power source, driving the working wheel 5 installed in the shield assembly 100 to rotate at a high speed, and the user can grasp the main shell 41 for grinding or cutting operations.

[0041] Please refer to Figures 2 to 3 In this embodiment, the shield assembly 100 includes a circular mounting ring 1 and a shield body 2 connected to the mounting ring 1, a center hole 12 is formed on the inner side of the mounting ring 1 and a fastening plate 11 is connected to the end of the mounting ring 1, and a head shell cover (not shown) is adapted to the lower end of the head shell 42, which passes through the center hole 12 and abuts against the inner wall of the mounting ring 1. Fasteners such as locking screws are installed in the fastening plate 11 to realize the installation of the shield assembly 100 and the head shell cover.

[0042] Furthermore, a center line X is passed through the center of the center hole 12, and a shield body 2 is integrally connected to the axial end side of the mounting ring 1. The shield body 2 includes a first wall portion 21 extending radially outward from the outer side of the mounting ring 1 along the center line X and a second wall portion 22 extending axially from the end of the first wall portion 21 along the center line X, that is, the axial end face of the first wall portion 21 is perpendicular to the center line X, and the circumferential end face of the second wall portion 22 is parallel to the center line X; the first wall portion 21 is used to cover at least part of the axial end face of the working wheel 5. Since the thickness of the circumferential end face of the working wheel 5 used for processing is extremely small and is extremely sharp under high-speed operation, the second wall portion 22 should cover at least part of the circumferential end face of the working wheel 5; the lower end of the second wall portion 22 is also connected to the third wall portion 23, and the third wall portion 23 is parallel or nearly parallel to the first wall portion 21.

[0043] However, if the working wheel 5 deviates in the direction of the working force and is easily stuck with the workpiece, the user, without knowing the stuck position, will often continue to operate the angle grinder 400 at high speed to force the working wheel 5 to loosen from the workpiece. This is likely to cause the working wheel 5 to burst and endanger the user's personal safety. Therefore, a visual system 3 is also provided on the shield assembly 100 to assist the user in performing the operation.

[0044] Please continue to refer to Figures 2 to 3 , the end of one side of the shield body 2 close to the fastening plate 11 is defined as the first end 2a, and the end of one side of the shield body 2 away from the fastening plate 11 is defined as the second end 2b; the visual system 3 is composed of a first visual mechanism 31 installed on the first wall portion 21 and a second visual mechanism 32 installed on the second wall portion 22, and the first visual mechanism 31 and the second visual mechanism 32 are located between the first end 2a and the second end 2b, that is, the first visual mechanism 31 can be set at any position of the axial end surface of the first wall portion 21, and the second visual mechanism 32 can be set at any position of the axial end surface of the second wall portion 22. Preferably, the first visual mechanism 31 and the second visual mechanism 32 are set at the second end 2b.

[0045] The axial end surface of the first wall portion 21 is penetrated by a first opening 211, and the circumferential end surface of the second wall portion 22 is penetrated by a second opening 221. The first visual mechanism 31 is installed in the first opening 211, and the second visual mechanism 32 is installed in the second opening 221; the first visual mechanism 31 includes a first cover 311 and a first perspective portion 312 accommodated in the first cover 311, and the first cover 311 is formed by a pair of mutually parallel first ribs 311a and a pair of mutually parallel second ribs 311b; the first rib 311a and the second rib 311b can be extended in a straight line or in an arc, because the first opening 211 penetrates the first wall portion 2 1, the shape of the axial end face of the first wall portion 21 to the first opening 211 is not limited, and the four wall surfaces constituting the first opening 211 can be curved surfaces or flat surfaces; accordingly, the two end surfaces where the first perspective portion 312 and the first rib 311a abut can be set as flat surfaces or curved surfaces, and the two end surfaces where the first perspective portion 312 and the second rib 311b abut can also be set as flat surfaces or curved surfaces; the internal area of ​​the first cover shell 311 is defined as the first inner frame 311c, and the first opening 211 and the first cover shell 311 as well as the first perspective portion 312 and the first inner frame 311c can be press-fitted by interference fit, or can be connected by snap fit.

[0046] Next, the second visual mechanism 32 is described. The second visual mechanism 32 is composed of a second cover shell 321 and a second perspective portion 322 accommodated in the second cover shell 321. The second cover shell 32 is formed by a pair of third ribs 321a and a pair of fourth ribs 321b that are parallel to each other. The third rib 321a extends in an arc, and the fourth rib 321b extends in a straight line. This is because the second opening 221 passes through the circumferential end surface of the second wall portion, and the upper and lower end surfaces of the second opening 221 need to be consistent with the circumferential surface of the second wall portion 22, that is, the upper end surfaces of the third rib 321a and the second perspective portion 322 must be bent and extended. The internal area of ​​the second cover shell 321 is defined as a second inner frame 321c, and the second opening 221 and the second cover shell 321 as well as the second perspective portion 322 and the second inner frame 321c can be press-fitted by interference fit, or can be connected by snaps.

[0047] Furthermore, the first perspective portion 312 and the second perspective portion 322 are made of transparent plastic or transparent glass, the area of ​​the first perspective portion 312 is smaller than the area of ​​the second perspective portion 322, and the two circumferential ends of the first perspective portion 312 are located between the two circumferential ends of the second perspective portion 322; in other words, assuming that the shield assembly 100 has a first plane P parallel to the center line X, the plane can pass through the first perspective portion 312 and the second perspective portion 322 at the same time.

[0048] In this embodiment, when the user uses the angle grinder 400, the working position of the working wheel 5 can be observed in real time through the first visual mechanism 31 and the second visual mechanism 32, thereby reducing potential safety risks of the operation and obtaining a better operating experience.

[0049] The utility model is not limited to the above specific embodiments. A person skilled in the art can easily understand that there are many alternatives to the shield assembly and angle grinder of the utility model without departing from the principle and scope of the utility model. The protection scope of the utility model shall be based on the content of the claims.

Claims

1. A shield assembly for an angle grinder, the shield assembly comprising a mounting ring and a shield body connected to the mounting ring, the shield body having a first wall portion radially extending from the outer periphery of the mounting ring along the center line of the mounting ring and a second wall portion axially extending from the end of the first wall portion along the center line; characterized in that: The shield assembly is provided with a visual system installed on the shield body, the shield body has a first opening penetrating through the first wall portion and a second opening penetrating through the second wall portion, the visual system has a first perspective portion accommodated in the first opening and a second perspective portion accommodated in the second opening, the shield body shields the working wheel of the angle grinder, and a user observes the working wheel through the first perspective portion and the second perspective portion.

2. The shield assembly according to claim 1, characterized in that: A fastening plate is connected to the end of the mounting ring, the shield body has a first end close to the fastening plate and a second end arranged opposite to the first end, and the first perspective portion and the second perspective portion are located between the first end and the second end.

3. The shield assembly according to claim 2, characterized in that: The area of ​​the first perspective portion is smaller than that of the second perspective portion, and two ends of the first perspective portion are located between two ends of the second perspective portion.

4. The shield assembly according to claim 3, characterized in that: The first perspective portion has an end surface that extends straight and / or curved, and the second perspective portion has an end surface that extends straight and curved.

5. The shield assembly according to claim 4, characterized in that: The shield assembly includes a first plane parallel to the center line, and the first plane passes through the first perspective portion and the second perspective portion simultaneously.

6. The shield assembly according to claim 5, characterized in that: The first perspective portion and the second perspective portion are made of transparent plastic or transparent glass.

7. The shield assembly according to claim 1, characterized in that: The visual system includes a first housing for accommodating the first perspective portion and a second housing for accommodating the second perspective portion. The first housing is mounted on the first opening, and the second housing is mounted on the second opening.

8. The shield assembly according to claim 7, characterized in that: The inner side of the first cover shell forms a first inner frame, the inner side of the second cover shell forms a second inner frame, the first perspective portion is installed in the first inner frame, and the second perspective portion is installed in the second inner frame.

9. The shield assembly according to claim 8, characterized in that: The first inner frame is formed by first ribs and second ribs, and the second inner frame is formed by third ribs and fourth ribs.

10. An angle grinder, comprising a housing, characterized in that: The angle grinder comprises the guard assembly according to any one of claims 1 to 9 above.

Images