Angle grinder dustproof device

Abstract

The utility model discloses an angle grinder dustproof device which comprises a first dustproof net and a second dustproof net, the first dustproof net is matched with a first sliding rail, and the second dustproof net is matched with a second sliding rail. The projections of the first dustproof net, the second dustproof net and the air inlet and outlet in the direction perpendicular to the first sliding rail are basically overlapped. The left portion, inserted into the first sliding rail, of the first dustproof net is consistent with the surface of the machine shell in height, the right portion of the first dustproof net is provided with a supporting portion protruding out of the left portion, and the height, protruding out of the first dustproof net, of the supporting portion is not smaller than 4 mm. The angle grinder dustproof device is provided with the first dustproof net and the second dustproof net which are detachable, more effective dust prevention can be achieved, and the service life of a tool is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool technical field, especially a dustproof device of angle grinder. BACKGROUND

[0002] Angle grinder is also called angle grinder, which is a common tool for polishing and cutting hard materials. When using the angle grinder, a large amount of dust will be generated, which will enter the inside of the angle grinder through the air window. With the increase of dust, the motor wire package will be damaged, resulting in insulation failure and burning of the motor, which will eventually cause the angle grinder to fail. Therefore, it is necessary to set a dust screen for the angle grinder.

[0003] A dustproof structure of an angle grinder is disclosed in Chinese patent No. CN218613310U, which includes a left rear cover, a right rear cover, a protective cover, an electronic coil and a controller. The left rear cover and the right rear cover are fixedly connected by screws to form an inner cavity. The left rear cover and the right rear cover are each provided with an air inlet one on the outer side. The air inlet one is provided with a steel mesh one. The protective cover is clamped in the air inlet one. The protective cover is provided with an air inlet two. The air inlet two is provided with a steel mesh two. The controller is arranged in the inner cavity. The electronic coil is fixedly arranged on both sides of the controller. The electronic coil is electrically connected to the controller. The electronic coil is arranged in the inner cavity. The electronic coil generates a diamagnetism when electrified, repels metal iron filings, prevents them from being sucked into the left rear cover and the right rear cover, and enters the gap between the stator and the rotor, preventing the machine from burning.

[0004] The existing dustproof method has the following disadvantages: (1) the dust screen is trapped in the machine shell, which is difficult to disassemble, replace or clean; (2) the design of the coil increases the machine space, making the product structure not small and compact; (3) the complex structure increases the cost and the assembly is more complex. SUMMARY

[0005] The utility model discloses a dustproof device of angle grinder to solve the above problems.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A dustproof device for an angle grinder includes an air inlet and outlet on the grinder housing, and a first slide rail and a second slide rail on the housing, the directions of which are parallel to the surface of the housing. The dustproof device comprises a first dustproof net and a second dustproof net, the first dustproof net engaging with the first slide rail, and the second dustproof net engaging with the second slide rail. The second dustproof net is located between the first dustproof net and the air inlet / outlet of the housing. The projections of the first dustproof net, the second dustproof net, and the air inlet / outlet in the direction perpendicular to the first slide rail substantially overlap. The left portion of the first dustproof net inserted into the first slide rail is at the same height as the surface of the housing, and the right portion of the first dustproof net has a support portion protruding from the left portion. The height of the support portion protruding from the first dustproof net is not less than 4 mm.

[0008] Furthermore, the second dustproof net has a second protrusion at its left end along the direction of movement, and the housing has a second locking part that cooperates with the second protrusion.

[0009] Furthermore, the housing is provided with a slot, through which the second protrusion passes into the housing.

[0010] Furthermore, the first dustproof net has a first protrusion at its left end along the direction of movement, and the second dustproof net has a first locking part that cooperates with the first protrusion.

[0011] Furthermore, the housing is provided with a slot, through which the first protrusion passes into the housing.

[0012] Furthermore, the housing is provided with a raised rib, which is located between the first slide rail and the second slide rail.

[0013] Furthermore, the height of the raised rib along the direction perpendicular to the first slide rail is not less than 2 mm.

[0014] Furthermore, there are two dustproof devices, which are symmetrically arranged on the housing along the axis of the angle mill.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. A double-layer dust filter is installed in the air intake area of ​​the tool. During operation, the first dust filter can block some dust in advance, and the second dust filter blocks some dust as it passes through. The filter screen used in the second dust filter has a larger mesh size than that used in the first dust filter, which is more effective in blocking fine dust particles, thus providing more effective dust protection and extending the tool's service life.

[0017] 2. After using the machine, the first and second dustproof nets can be removed to clean the dust between the two layers, thereby extending the tool's service life;

[0018] 3. The gap between the first and second dustproof nets ensures airflow circulation while preventing dust from accumulating between the two nets, thus ensuring smooth airflow.

[0019] 4. The stable connection between the first dustproof net, the second dustproof net and the machine casing ensures that the dustproof cover will not detach or fall off due to the vibration of grinding when the machine is working. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a structural diagram of the angle grinder housing in an embodiment of this utility model;

[0022] Figure 2 This is an exploded view of the components of the angle grinder dustproof device in this embodiment of the present invention;

[0023] Figure 3 for Figure 1 A magnified view of a portion of the slot.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Housing; 2. Dustproof device; 3. First dustproof net; 4. Second dustproof net; 11. First slide rail; 12. Second slide rail; 13. Rib; 14. Slot; 31. Support part; 32. First protrusion; 41. Second protrusion; 42. First locking part. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0028] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0029] As used herein, the singular forms “a,” “an,” and “the” include plural objects, and the plural form “multiple” includes two or more objects, unless otherwise expressly indicated. As used herein, the term “or” is generally used to include the meaning of “and / or,” unless otherwise expressly indicated, and the terms “install,” “connect,” and “link” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Connections can be direct or indirect through an intermediate medium, and can be internal communication between two components or an interaction between two components.

[0030] This utility model provides a dustproof device for an angle grinder, wherein the angle grinder is a power tool well known to those skilled in the art, including a housing for hand gripping, and a motor and transmission mechanism housed within the housing. For ease of description, the output end of the angle grinder is defined as left, and the power supply end furthest from the output end is defined as right.

[0031] like Figures 1-2 As shown, a dustproof device 2 is provided on the right end of the housing 1. In this embodiment, two dustproof devices are preferably used, symmetrically arranged on both sides of the housing along the axis of the angle grinder. The angle grinder housing 1 has air inlets and outlets located close to the motor position inside the housing 1, and these inlets and outlets are arranged in a grid pattern with multiple windows for air intake and exhaust. For ease of description, the direction of the dustproof device is defined as upward, and the direction away from the dustproof device and towards the interior of the housing is defined as downward.

[0032] A first slide rail 11 is provided on the housing 1 along the left-right direction, providing a motion guide parallel to the surface of the housing 1. A second slide rail 12, parallel to the first slide rail 11, is provided in the vertical direction, also providing a motion guide parallel to the surface of the housing 1. The housing 1 also has raised ribs 13, evenly distributed between the first slide rail 11 and the second slide rail 12, ensuring a certain height between the first and second slide rails in the vertical direction. Preferably, in this embodiment, the height of the raised ribs in the vertical direction perpendicular to the first slide rail is set to not less than 2 mm, ensuring a reasonable gap between the first and second dustproof nets, guaranteeing airflow circulation, and preventing dust accumulation between the two dustproof nets, thus ensuring smooth airflow.

[0033] The angle grinder dustproof device 2 includes a first dustproof net 3 and a second dustproof net 4. The dustproof net structure consists of a mesh-like shell and a filter screen fixed to the shell, and the shell and filter screen are made of different materials. The edge of the shell of the first dustproof net 3 engages with the first slide rail 11, allowing the first dustproof net 3 to move along the first slide rail 11 from right to left to the top of the first slide rail 11. After the first dustproof net 3 is fully inserted into the rail, the left side of the first dustproof net 3 is at the same height as the surface of the machine housing 1, presenting a relatively smooth transition. The right side of the first dustproof net 3 has a support portion 31, which protrudes upward along a plane perpendicular to the left side of the first dustproof net 3. In this embodiment, the height of the support portion protruding from the first dustproof net is preferably set to not less than 4 mm, which facilitates the isolation of ground dust when the machine is placed on the ground, and also allows the user to apply force to the support portion with their hand, making the operation of the first dustproof net more effortless.

[0034] The edge of the second dust filter 4 mates with the second slide rail 12, allowing the second dust filter 4 to travel along the first slide rail 12 from right to left to its top. The second dust filter 4 is located between the first dust filter 3 and the air inlet / outlet of the housing 1. Specifically, the projections of the first dust filter, the second dust filter, and the air inlet / outlet on the housing in the vertical direction perpendicular to the first slide rail essentially overlap. By setting a double-layer dust filter in the tool's air inlet area, during operation, the first dust filter can pre-block some dust, and the second dust filter further blocks some dust as it passes through. The filter used in the second dust filter has a larger mesh size than that used in the first dust filter, making it more effective at blocking fine dust particles and extending the tool's lifespan.

[0035] like Figure 3As shown, a second convex portion 41 is provided at the top left of the second dust-proof net 4, and the second convex portion 41 protrudes towards the air outlet of the machine casing. The second dust-proof net 4 moves to the top along the direction from right to left, and a second locking portion cooperating with the second convex portion 41 is provided on the wall of the air inlet / outlet of the machine casing 1. The fixing method here is mainly guided by simplicity without increasing complex assembly and production costs. Of course, other bayonet connections or screw connections can also be used.

[0036] A first convex portion 32 is provided at the top left of the first dust-proof net 3, and the first convex portion 32 protrudes towards the second dust-proof net 4. The first dust-proof net 3 moves to the top along the direction from right to left, and a first locking portion 42 cooperating with the first convex portion 32 is provided on the upper surface casing of the second dust-proof net 4. Specifically, the first locking portion 42 is a concave portion. In view of the rib 13 between the first slide rail 11 and the second slide rail 12, the protruding height of the first convex portion 32 in the up and down direction should be greater than the height of the rib 13. Here, in order to facilitate the cooperation between the first convex portion 32 and the first locking portion 42, the left end of the first dust-proof net 3 is set to be in the shape of "丿", shortening the distance between the plane where the first convex portion 32 is located and the plane where the first locking portion 42 is located, so that the protruding height of the first convex portion 32 will not be abrupt and affect the structural strength at this place.

[0037] At the inner wall of the machine casing at the top where the first dust-proof net 3 and the second dust-proof net 4 move to the left, a slot 14 is provided. The opening direction of the slot 14 is to the right, and the direction of the slot 14 is parallel to the movement direction of the first dust-proof net 3 or the second dust-proof net 4. The second convex portion 41 passes through the slot and enters the machine casing, and the first convex portion 32 also passes through the slot and enters the machine casing, so that there is a good limit for the first dust-proof net 3 and the second dust-proof net 4 in the up and down direction. In this way, the stable connection between the first dust-proof net, the second dust-proof net and the machine casing ensures that the dust-proof cover will not be detached or dropped due to the vibration during grinding when the machine is working. After the machine is used, the first dust-proof net and the second dust-proof net can be detached, and the dust between the two dust-proof nets can be cleaned to extend the service life of the tool.

[0038] The disassembly method provided in this embodiment includes but is not limited to disassembling the first dust-proof net and the second dust-proof net one by one from top to bottom, or disassembling the second dust-proof net or the first dust-proof net one by one from bottom to top, or directly operating the second dust-proof net to detach the first dust-proof net and the second dust-proof net together from the machine casing through the connection relationship between the first dust-proof net and the second dust-proof net.

[0039] Therefore, a corner grinder dust-proof device provided by the present utility model has a detachable first dust-proof net and a second dust-proof net, which can achieve more effective dust-proof and extend the service life of the tool.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A dustproof device for an angle grinder, wherein the angle grinder housing is provided with an air inlet and outlet, characterized in that: The housing is provided with a first slide rail and a second slide rail, the directions of which are parallel to the surface of the housing. The dustproof device includes a first dustproof net and a second dustproof net, the first dustproof net cooperating with the first slide rail and the second dustproof net cooperating with the second slide rail. The second dustproof net is located between the first dustproof net and the air inlet / outlet of the housing. The projections of the first dustproof net, the second dustproof net, and the air inlet / outlet in the direction perpendicular to the first slide rail substantially overlap. The left part of the first dustproof net inserted into the first slide rail is at the same height as the surface of the housing, and the right part of the first dustproof net is provided with a support portion protruding from the left part. The height of the support portion protruding from the first dustproof net is not less than 4 mm.

2. The dustproof device for an angle grinder according to claim 1, characterized in that: The second dustproof net has a second protrusion at its left end along the direction of movement, and the housing has a second locking part that cooperates with the second protrusion.

3. The dustproof device for an angle grinder according to claim 2, characterized in that: The housing is provided with a slot, and the second protrusion passes through the slot and enters the housing.

4. The dustproof device for an angle grinder according to claim 1, characterized in that: The first dustproof net has a first protrusion at its left end along the direction of movement, and the second dustproof net has a first locking part that cooperates with the first protrusion.

5. The dustproof device for an angle grinder according to claim 4, characterized in that: The housing is provided with a slot, and the first protrusion passes through the slot and enters the housing.

6. The dustproof device for an angle grinder according to claim 1, characterized in that: The housing is provided with a raised rib, which is located between the first slide rail and the second slide rail.

7. The dustproof device for an angle grinder according to claim 6, characterized in that: The height of the raised rib along the direction perpendicular to the first slide rail is not less than 2 mm.

8. The dustproof device for an angle grinder according to claim 1, characterized in that: There are two dustproof devices, which are symmetrically arranged on the housing along the axis of the angle mill.

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