Heat dissipation air duct structure of angle grinder and angle grinder

Abstract

The utility model provides a heat dissipation air duct structure of an angle grinder and the angle grinder, and relates to the technical field of angle grinders. The heat dissipation air duct structure of the angle grinder comprises a machine shell and a tail cover. The machine shell and the tail cover are connected with each other, and a plurality of first air inlets are formed in the two sides of the tail cover. An exhaust outlet is formed in the end, away from the tail cover, of the machine shell, a motor is arranged in the machine shell, an exhaust channel is formed between the machine shell and the motor and connected with the exhaust outlet, and a cavity in the tail cover can be communicated with the exhaust channel; a mounting seat for mounting a switch is arranged on the shell, arc-shaped protective wings are arranged on the two sides of the mounting seat, and the arc-shaped protective wings correspond to the first air inlet. The angle grinder comprises the angle grinder heat dissipation air duct structure. The technical effect that dust in the shell can be discharged is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle grinders, and in particular to a heat dissipation duct structure of an angle grinder and an angle grinder. Background Art

[0002] When cutting or grinding objects, the angle grinder will generate a large amount of debris and dust. Some of the flying debris and dust will fall on the joint between the casing and the tail cover. The dust at the joint can easily conduct with the internal live components and cause the risk of electric shock; some of it will be sucked into the interior of the angle grinder through the air inlet of the angle grinder, causing damage to the internal components of the angle grinder and affecting the service life of the machine, which may seriously cause safety hazards.

[0003] In the prior art, a dust screen is added at the air inlet to prevent some large dust particles from entering the angle grinder. The dust will accumulate inside the shell, and excessive dust accumulation inside will cause damage to components. Utility Model Content

[0004] The purpose of the utility model is to provide an angle grinder heat dissipation air duct structure and an angle grinder, so as to alleviate the technical problem of easy accumulation of dust inside the shell in the prior art.

[0005] In a first aspect, an embodiment of the present utility model provides a heat dissipation duct structure for an angle grinder, comprising a housing and a tail cover;

[0006] The housing and the tail cover are connected to each other, and a plurality of first air inlets are opened on both sides of the tail cover;

[0007] An exhaust port is provided at one end of the housing away from the tail cover, a motor is provided in the housing, an exhaust passage is provided between the housing and the motor, the exhaust passage is connected to the exhaust port, and a cavity in the tail cover can be communicated with the exhaust passage;

[0008] The housing is provided with a mounting base for mounting a switch, and arc-shaped protective wings are provided on both sides of the mounting base, and the arc-shaped protective wings correspond to the first air inlet.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a windshield is provided on the inner wall of the tail cover at the first air inlet, and ventilation holes are provided on the upper and lower sides of the windshield.

[0010] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation of the first aspect, wherein the windshield is U-shaped.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the plurality of first air inlets are arranged at equal intervals on the tail cover.

[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein second air inlets are provided on both sides of the tail cover, and the second air inlets are provided above and below the first air inlet.

[0013] In combination with the first aspect, an embodiment of the utility model provides a possible implementation method of the first aspect, wherein an air guide cover is provided on the inner wall of the tail cover at the second air inlet, so that the airflow entering the tail cover through the second air inlet blows toward the inner wall of the tail cover.

[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a hollow portion is provided between the arc-shaped wing and the mounting seat.

[0015] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein an extension ring is provided at one end of the housing connected to the tail cover, an extension cover is provided at one end of the tail cover connected to the housing, and the extension ring is inserted into the extension cover;

[0016] One end of the housing where the extension ring is provided has a first step, and the end of the extension cover can abut against the first step;

[0017] The tail cover is provided with a second step at one end of the extension cover, and the end of the extension ring can abut against the second step;

[0018] The gap between the extension cover and the first step, the gap between the extension ring and the extension cover, and the gap between the extension ring and the second step form a labyrinth structure.

[0019] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein a positioning slot is provided on the extension ring, and a positioning slider adapted to the positioning slot is provided on the extension cover;

[0020] A rotation-stop groove is formed at the end of the extension ring, and a rotation-stop protrusion that can be matched with the rotation-stop groove is provided on the second step.

[0021] In a first aspect, an embodiment of the present utility model provides an angle grinder, including the angle grinder heat dissipation duct structure.

[0022] Beneficial effects:

[0023] The utility model provides a heat dissipation air duct structure of an angle grinder, comprising a casing and a tail cover; the casing and the tail cover are connected to each other, and a plurality of first air inlets are provided on both sides of the tail cover; an exhaust port is provided at one end of the casing away from the tail cover, a motor is provided in the casing, an exhaust channel is provided between the casing and the motor, the exhaust channel is connected to the exhaust port, and a cavity in the tail cover can be communicated with the exhaust channel; a mounting base for mounting a switch is provided on the casing, and arc-shaped protective wings are provided on both sides of the mounting base, and the arc-shaped protective wings correspond to the first air inlet.

[0024] Specifically, when the angle grinder is in use, the cooling fan inside the angle grinder will suck the external airflow into the tail cover from the first air inlet. When the airflow enters the tail cover from the first air inlet, it will hit the arc-shaped wing guard, causing the dust carried by the airflow to fall. The dust will fall to the bottom of the tail cover and will not accumulate on the switch, thereby reducing the short circuit phenomenon of the switch due to dust accumulation. The dust accumulated at the bottom of the tail cover will enter the exhaust duct under the action of the airflow, and then be discharged from the exhaust port on the casing, thereby reducing the dust accumulation inside the angle grinder.

[0025] The utility model provides an angle grinder, including an angle grinder heat dissipation air duct structure. Compared with the prior art, the angle grinder has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of the heat dissipation duct structure of an angle grinder provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the connection of the heat dissipation duct structure of the angle grinder provided by an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of the structure of the tail cover in the heat dissipation duct structure of the angle grinder provided by an embodiment of the utility model;

[0030] Figure 4 This is a cross-sectional view of the isolation plate and wind shield in the heat dissipation duct structure of the angle grinder provided by an embodiment of the utility model.

[0031] icon:

[0032] 100 - housing; 110 - air outlet; 120 - curved wing guard; 130 - mounting base; 140 - hollow portion; 150 - extension ring; 151 - positioning slide; 152 - anti-rotation groove; 160 - first step;

[0033] 200 - tail cover; 210 - first air inlet; 211 - wind shield; 212 - vent; 220 - second air inlet; 221 - wind guide cover; 230 - extension cover; 231 - positioning slider; 240 - second step; 241 - anti-rotation protrusion. DETAILED DESCRIPTION

[0034] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

[0039] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, this embodiment provides a heat dissipation duct structure for an angle grinder, including a casing 100 and a tail cover 200; the casing 100 and the tail cover 200 are connected to each other, and a plurality of first air inlets 210 are provided on both sides of the tail cover 200; an exhaust port 110 is provided at one end of the casing 100 away from the tail cover 200, a motor is provided in the casing 100, an exhaust channel is provided between the casing 100 and the motor, the exhaust channel is connected to the exhaust port 110, and the cavity in the tail cover 200 can be connected to the exhaust channel; a mounting base 130 for mounting a switch is provided on the casing 100, and arc-shaped protective wings 120 are provided on both sides of the mounting base 130, and the arc-shaped protective wings 120 correspond to the first air inlet 210.

[0040] Specifically, when the angle grinder is in use, the cooling fan inside the angle grinder will suck the external airflow into the tail cover 200 from the first air inlet 210. When the airflow enters the tail cover 200 from the first air inlet 210, it will hit the arc-shaped wing 120, causing the dust carried by the airflow to fall. The dust will fall to the bottom of the tail cover 200 and will not accumulate on the switch, reducing the short circuit phenomenon of the switch due to dust accumulation. The dust accumulated at the bottom of the tail cover 200 will enter the exhaust duct under the action of the airflow, and then be discharged from the exhaust port 110 on the casing 100, reducing the accumulation of dust inside the angle grinder.

[0041] See also Figure 1 - Figure 4 As shown, in an optional solution of this embodiment, a windshield 211 is provided on the inner wall of the tail cover 200 at the first air inlet 210 , and ventilation holes 212 are provided on the upper and lower sides of the windshield 211 .

[0042] The windshield 211 is U-shaped. With this arrangement, the airflow entering from the first air inlet 210 first hits the U-shaped bottom of the windshield 211 and then flows to both sides.

[0043] The plurality of first air inlets 210 are provided on the tail cover 200 at equal intervals.

[0044] Specifically, a windshield 211 is provided on the inner wall of the tail cover 200, and each first air inlet 210 is provided with a windshield 211. The airflow entering from the first air inlet 210 will first hit the windshield 211, and then enter the tail cover 200 through the vents 212 above and below the windshield 211.

[0045] See also Figure 1 - Figure 4 As shown, in an optional solution of this embodiment, second air inlets 220 are opened on both sides of the tail cover 200 , and second air inlets 220 are provided above and below the first air inlet 210 .

[0046] An air guide cover 221 is provided on the inner wall of the tail cover 200 at the second air inlet 220 , so that the airflow entering the tail cover 200 through the second air inlet 220 is blown toward the inner wall of the tail cover 200 .

[0047] Specifically, second air inlets 220 are opened on both sides of the tail cover 200. The second air inlet 220 is arranged on the same side as the first air inlet 210, and two groups of second air inlets 220 are arranged on each side. The two groups of second air inlets 220 are located above and below the first air inlet 210. Through the setting of the second air inlet 220, the air intake volume is increased and the heat dissipation effect is improved.

[0048] In addition, an air guide cover 221 is provided on the inner wall of the tail cover 200, and each second air inlet 220 is correspondingly provided with an air guide cover 221. Through the setting of the air guide cover 221, the air flow entering the tail cover 200 from the second air inlet 220 will flow along the inner wall of the tail cover 200, and will not directly blow on the mounting seat 130 or the curved guard 120.

[0049] Among them, a hollow portion 140 is provided between the arc-shaped protective wing 120 and the mounting seat 130. Through the setting of the hollow portion 140, the dust accumulated on the mounting seat 130 falls to the bottom of the tail cover 200 through the hollow portion 140, and is blown away by the heat dissipation airflow, so that the dust is discharged from the exhaust port 110 along the exhaust channel.

[0050] See also Figure 1 - Figure 4 As shown, in an optional scheme of this embodiment, an extension ring 150 is provided at one end of the casing 100 connected to the tail cover 200, and an extension cover 230 is provided at one end of the tail cover 200 connected to the casing 100, and the extension ring 150 is inserted into the extension cover 230; the end of the casing 100 where the extension ring 150 is provided has a first step 160, and the end of the extension cover 230 can abut against the first step 160; the end of the tail cover 200 where the extension cover 230 is provided has a second step 240, and the end of the extension ring 150 can abut against the second step 240; the gap between the extension cover 230 and the first step 160 - the gap between the extension ring 150 and the extension cover 230 - the gap between the extension ring 150 and the second step 240 form a maze structure.

[0051] Specifically, an extension ring 150 is provided at one end where the housing 100 is connected to the tail cover 200, and an extension cover 230 is provided at one end where the tail cover 200 is connected to the housing 100. When the housing 100 and the tail cover 200 are connected, the extension ring 150 can be inserted into the extension cover 230, and a first step 160 is provided at one end where the extension ring 150 is provided on the housing 100, and the end of the extension cover 230 can abut against the first step 160. A second step 240 is provided at one end where the extension cover 230 is provided on the tail cover 200, and the end of the extension ring 150 can abut against the first step 160. It abuts against the second step 240, so that the gap between the extension cover 230 and the first step 160 - the gap between the extension ring 150 and the extension cover 230 - the gap between the extension ring 150 and the second step 240 form a maze structure. The maze structure protects the connection between the casing 100 and the tail cover 200 to prevent external dust from entering the casing 100 from the connection between the casing 100 and the tail cover 200, so that the dust falling on the connection between the casing 100 and the tail cover 200 cannot contact and conduct with the internal charged body, thereby reducing the risk of electric shock.

[0052] Among them, multiple positioning grooves 151 can be symmetrically opened on the extension ring 150, and a positioning slider 231 adapted to the positioning groove 151 is provided on the extension cover 230. The connection and positioning of the housing 100 and the tail cover 200 are completed through the cooperation of the positioning groove 151 and the positioning slider 231.

[0053] The plurality of positioning slots 151 may be staggeredly provided on the extension ring 150 . This arrangement enables the tail cover 200 to be mounted on the housing 100 in a correct posture.

[0054] See also Figure 1 - Figure 4 As shown, in an optional scheme of this embodiment, a positioning groove 151 is provided on the extension ring 150, and a positioning slider 231 adapted to the positioning groove 151 is provided on the extension cover 230; a stop groove 152 is provided at the end of the extension ring 150, and a stop protrusion 241 adapted to the stop groove 152 is provided on the second step 240.

[0055] Specifically, a stop groove 152 is provided at the end of the extension ring 150, and a stop protrusion 241 is provided on the second step 240. When the housing 100 and the tail cover 200 are connected, the stop protrusion 241 can be inserted into the stop groove 152. Through such a setting, the structural strength of the housing 100 and the tail cover 200 after the connection is improved.

[0056] This embodiment provides an angle grinder, including an angle grinder heat dissipation air duct structure.

[0057] Specifically, the angle grinder provided in this embodiment has the advantages of the above-mentioned heat dissipation duct structure of the angle grinder compared with the prior art, which will not be described in detail here.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation duct structure for an angle grinder, characterized in that: include: A housing (100) and a tail cover (200); The housing (100) and the tail cover (200) are connected to each other, and a plurality of first air inlets (210) are provided on both sides of the tail cover (200); An exhaust port (110) is provided at one end of the housing (100) away from the tail cover (200), a motor is provided in the housing (100), an exhaust passage is provided between the housing (100) and the motor, the exhaust passage is connected to the exhaust port (110), and a cavity in the tail cover (200) is capable of communicating with the exhaust passage; The housing (100) is provided with a mounting seat (130) for mounting a switch, and arc-shaped protective wings (120) are provided on both sides of the mounting seat (130), and the arc-shaped protective wings (120) correspond to the first air inlet (210).

2. The heat dissipation duct structure of the angle grinder according to claim 1, characterized in that: A windshield (211) is provided on the inner wall of the tail cover (200) at the first air inlet (210), and ventilation openings (212) are provided on the upper and lower sides of the windshield (211).

3. The heat dissipation duct structure of the angle grinder according to claim 2, characterized in that: The wind shield (211) is U-shaped.

4. The heat dissipation duct structure of the angle grinder according to claim 1, characterized in that: A plurality of the first air inlets (210) are arranged at equal intervals on the tail cover (200).

5. The heat dissipation duct structure of the angle grinder according to claim 1, characterized in that: Second air inlets (220) are provided on both sides of the tail cover (200), and the second air inlets (220) are provided above and below the first air inlet (210).

6. The heat dissipation duct structure of the angle grinder according to claim 5, characterized in that: An air guide cover (221) is provided on the inner wall of the tail cover (200) at the second air inlet (220), so that the airflow entering the tail cover (200) through the second air inlet (220) is blown toward the inner wall of the tail cover (200).

7. The heat dissipation duct structure of the angle grinder according to claim 1, characterized in that: A hollow portion (140) is provided between the arc-shaped wing (120) and the mounting seat (130).

8. The heat dissipation duct structure of an angle grinder according to any one of claims 1 to 7, characterized in that: An extension ring (150) is provided at one end of the housing (100) connected to the tail cover (200), and an extension cover (230) is provided at one end of the tail cover (200) connected to the housing (100), and the extension ring (150) is inserted into the extension cover (230); One end of the housing (100) where the extension ring (150) is provided has a first step (160), and the end of the extension cover (230) can abut against the first step (160); The tail cover (200) is provided with a second step (240) at one end of the extension cover (230), and the end of the extension ring (150) can abut against the second step (240); The gap between the extension cover (230) and the first step (160), the gap between the extension ring (150) and the extension cover (230), and the gap between the extension ring (150) and the second step (240) form a labyrinth structure.

9. The heat dissipation duct structure of the angle grinder according to claim 8, characterized in that: The extension ring (150) is provided with a positioning slot (151), and the extension cover (230) is provided with a positioning slider (231) adapted to the positioning slot (151); A rotation-stop groove (152) is provided at the end of the extension ring (150), and a rotation-stop protrusion (241) that can be matched with the rotation-stop groove (152) is provided on the second step (240).

10. An angle grinder, characterized in that: The invention comprises the heat dissipation air duct structure of an angle grinder as claimed in any one of claims 1 to 9.

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