Angle grinder shell and tail cover connecting structure and angle grinder
By setting isolation ribs and a maze structure at the connection between the angle grinder casing and the rear cover, the risk of electric shock and component damage caused by dust ingress is resolved, effective dust protection is achieved, and the safety and service life of the machine are improved.
Patent Information
- Application Number
- CN202422462075.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The debris and dust generated by existing angle grinders during cutting or grinding can easily enter the connection between the casing and the tail cover, causing the dust to come into contact with the internal live structures, posing a risk of electric shock and damaging components. The existing dust screen structure is not effective in harsh environments.
Isolation ribs and a maze structure are set at the connection between the rear cover of the casing. The isolation ribs separate the live wire and neutral wire ends of the control switch. The maze structure blocks the entry of dust and forms multiple protections through the guide cover and extension ring to avoid dust accumulation and conduction.
Effectively prevent dust from entering the casing, reduce the risk of electric shock, protect internal components, and extend the service life of the machine.
Smart Images
Figure CN223394996U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of angle grinders, and in particular to a connection structure of a housing and a tail cover 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 existing technology, a dust net is added at the air inlet to prevent some large particles of dust from entering the interior of the angle grinder. However, too much dust entering the interior will still cause damage to components. In most structures, the connection between the casing and the tail cover cannot prevent dust from contacting the internal charged structure in harsh environments, which poses a certain risk. Utility Model Content
[0004] The purpose of the utility model is to provide an angle grinder housing tail cover connection structure and an angle grinder, so as to alleviate the technical problem in the prior art that dust cannot be blocked between the housing and the tail cover.
[0005] In a first aspect, an embodiment of the present invention provides a housing and tail cover connection structure for an angle grinder, comprising a housing and a tail cover;
[0006] The housing and the tail cover are connected to each other;
[0007] The housing is provided with a mounting base for mounting a control switch, and the control switch can be connected to the motor;
[0008] An isolation rib is provided in the mounting base, and the isolation rib can separate the live wire end and the neutral wire end of the control switch.
[0009] In combination with the first aspect, the embodiment of the present utility model provides a possible implementation of the first aspect, wherein two labyrinth plates are provided in the tail cover;
[0010] After the housing and the tail cover are connected, the isolation rib is located between the two labyrinth plates, the labyrinth plates are located above the isolation ribs, and the isolation ribs and the labyrinth plates form a first labyrinth structure.
[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an air inlet is provided on the tail cover, and a guide cover is provided at the air inlet to enable the air flow to blow onto the maze plate.
[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the cross-section of the guide cover is L-shaped.
[0013] 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;
[0014] 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;
[0015] 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;
[0016] 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 second labyrinth structure.
[0017] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation of the first aspect, wherein a positioning groove is provided on the extension ring, and a positioning slider adapted to the positioning groove is provided on the extension cover.
[0018] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation of the first aspect, wherein the number of the above-mentioned positioning grooves is multiple, and the multiple positioning grooves are symmetrically arranged on the extension ring.
[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the number of the above-mentioned positioning grooves is multiple, and the multiple positioning grooves are staggered and opened on the extension ring.
[0020] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a stop groove is provided at the end of the extension ring, and a stop protrusion that can adapt to the stop groove is provided on the second step.
[0021] In a second aspect, an embodiment of the present invention provides an angle grinder, comprising the angle grinder housing tail cover connection structure.
[0022] Beneficial effects:
[0023] The utility model provides a casing and tail cover connection structure of an angle grinder, comprising a casing and a tail cover; the casing and the tail cover are connected to each other; the casing is provided with a mounting seat for mounting a control switch, and the control switch can be connected to a motor; an isolation rib is provided in the mounting seat, and the isolation rib can separate the live wire end and the neutral wire end of the control switch.
[0024] Specifically, a mounting base is provided on the casing, and a control switch for controlling the motor is installed on the mounting base, and an isolation rib is provided inside the mounting base. The isolation rib can separate the live wire end and the neutral wire end of the control switch. The dust carried by the airflow entering through the tail cover will fall on both sides of the isolation rib respectively, and through the setting of the isolation rib, the dust falling on both sides of the isolation rib cannot come into contact, thereby preventing the accumulated dust from conducting the live wire end and the neutral wire end of the control switch.
[0025] The utility model provides an angle grinder, including an angle grinder housing tail cover connection 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 diagram of the connection structure of the housing tail cover of an angle grinder provided by an embodiment of the utility model;
[0028] Figure 2 A schematic diagram of the connection structure of the housing tail cover of an angle grinder provided in an embodiment of the utility model;
[0029] Figure 3 A schematic structural diagram of a tail cover in a tail cover connection structure for an angle grinder housing provided by an embodiment of the present utility model;
[0030] Figure 4 A cross-sectional view of the isolation ribs and labyrinth plates in the angle grinder housing tail cover connection structure provided by an embodiment of the utility model.
[0031] icon:
[0032] 100 - housing; 110 - mounting base; 120 - isolation rib; 130 - extension ring; 131 - positioning slide; 132 - anti-rotation groove; 140 - first step;
[0033] 200 - tail cover; 210 - labyrinth plate; 220 - air inlet; 221 - 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 4As shown, this embodiment provides an angle grinder casing tail cover connection structure, including a casing 100 and a tail cover 200; a mounting base 110 for mounting a control switch is provided on the casing 100, and the control switch is connected to the motor; an isolation rib 120 is provided in the mounting base 110, and the isolation rib 120 can separate the live wire end and the neutral wire end of the control switch.
[0040] Specifically, a mounting base 110 is provided on the casing 100, and a control switch for controlling the motor is installed on the mounting base 110, and an isolation rib 120 is provided in the mounting base 110. The isolation rib 120 can separate the live wire end and the neutral wire end of the control switch. The dust carried by the airflow entering through the tail cover 200 will fall on both sides of the isolation rib 120 respectively, and through the setting of the isolation rib 120, the dust falling on both sides of the isolation rib 120 cannot come into contact, thereby preventing the accumulated dust from conducting the live wire end and the neutral wire end of the control switch.
[0041] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, two labyrinth plates 210 are provided in the tail cover 200; after the casing 100 and the tail cover 200 are connected, the isolation rib 120 is located between the two labyrinth plates 210, and the labyrinth plate 210 is located above the isolation rib 120, and the isolation rib 120 and the labyrinth plate 210 form a first labyrinth structure.
[0042] The tail cover 200 is provided with an air inlet 220, and a guide cover 221 is provided at the air inlet 220 to allow air flow to blow on the labyrinth plate 210. The cross section of the guide cover 221 is L-shaped.
[0043] Specifically, two maze plates 210 are provided in the tail cover 200. When the casing 100 and the tail cover 200 are connected, the isolation rib 120 is located between the two maze plates 210, and the maze plate 210 is located above the isolation rib 120. The isolation rib 120 and the maze plate 210 form a first maze structure, and the first maze structure is S-shaped, thereby preventing dust from accumulating on the open control switch.
[0044] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, in an optional scheme of this embodiment, an extension ring 130 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 130 is inserted into the extension cover 230; the end of the casing 100 provided with the extension ring 130 has a first step 140, and the end of the extension cover 230 can abut against the first step 140; the end of the tail cover 200 provided with the extension cover 230 has a second step 240, and the end of the extension ring 130 can abut against the second step 240; the gap between the extension cover 230 and the first step 140 - the gap between the extension ring 130 and the extension cover 230 - the gap between the extension ring 130 and the second step 240 form a second maze structure.
[0045] Specifically, an extension ring 130 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. When the housing 100 and the tail cover 200 are connected, the extension ring 130 can be inserted into the extension cover 230, and a first step 140 is provided at one end of the housing 100 where the extension ring 130 is provided, and the end of the extension cover 230 can abut against the first step 140, and a second step 240 is provided at one end of the tail cover 200 where the extension cover 230 is provided, and the end of the extension ring 130 can abut against the second step 140. The two steps 240 abut against each other, so that the gap between the extension cover 230 and the first step 140 - the gap between the extension ring 130 and the extension cover 230 - the gap between the extension ring 130 and the second step 240 form a second maze structure. The second maze structure protects the connection between the casing 100 and the tail cover 200 to prevent external dust from entering the casing 100 through 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.
[0046] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, a positioning slot 131 is provided on the extension ring 130 , and a positioning slider 231 adapted to the positioning slot 131 is provided on the extension cover 230 .
[0047] There are multiple positioning slots 131 , and the multiple positioning slots 131 are symmetrically arranged on the extension ring 130 .
[0048] Specifically, multiple positioning grooves 131 are symmetrically opened on the extension ring 130, and a positioning slider 231 adapted to the positioning groove 131 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 131 and the positioning slider 231.
[0049] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, there are multiple positioning slots 131 , and the multiple positioning slots 131 are staggered and opened on the extension ring 130 .
[0050] Specifically, a plurality of positioning slots 131 are staggeredly provided on the extension ring 130 . With such an arrangement, the tail cover 200 can be mounted on the housing 100 in a correct posture.
[0051] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, a rotation-stop groove 132 is provided at the end of the extension ring 130 , and a rotation-stop protrusion 241 that can adapt to the rotation-stop groove 132 is provided on the second step 240 .
[0052] Specifically, a stop groove 132 is provided at the end of the extension ring 130, 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 132. Through such a setting, the structural strength of the housing 100 and the tail cover 200 after the connection is improved.
[0053] This embodiment provides an angle grinder, including an angle grinder housing tail cover connection structure.
[0054] Specifically, the angle grinder provided in this embodiment has the advantages of the above-mentioned angle grinder housing tail cover connection structure compared with the prior art, which will not be described in detail here.
[0055] 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 connection structure for the tail cover of an angle grinder housing, 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; The housing (100) is provided with a mounting seat (110) for mounting a control switch, and the control switch can be connected to the motor; An isolation rib (120) is provided in the mounting seat (110), and the isolation rib (120) can separate the live wire end and the neutral wire end of the control switch.
2. The angle grinder housing tail cover connection structure according to claim 1, characterized in that: Two labyrinth plates (210) are arranged in the tail cover (200); After the housing (100) and the tail cover (200) are connected, the isolation rib (120) is located between the two labyrinth plates (210), the labyrinth plates (210) are located above the isolation rib (120), and the isolation rib (120) and the labyrinth plates (210) form a first labyrinth structure.
3. The angle grinder housing tail cover connection structure according to claim 2, characterized in that: An air inlet (220) is provided on the tail cover (200), and a guide cover (221) is provided at the air inlet (220) so that air flow can be blown onto the labyrinth plate (210).
4. The angle grinder housing tail cover connection structure according to claim 3, characterized in that: The cross section of the guide cover (221) is L-shaped.
5. The angle grinder housing tail cover connection structure according to any one of claims 1 to 4, characterized in that: An extension ring (130) 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), wherein the extension ring (130) is inserted into the extension cover (230); One end of the extension ring (130) provided on the housing (100) has a first step (140), and the end of the extension cover (230) can abut against the first step (140); 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 (130) can abut against the second step (240); The gap between the extension cover (230) and the first step (140), the gap between the extension ring (130) and the extension cover (230), and the gap between the extension ring (130) and the second step (240) form a second labyrinth structure.
6. The angle grinder housing tail cover connection structure according to claim 5, characterized in that: The extension ring (130) is provided with a positioning slide groove (131), and the extension cover (230) is provided with a positioning slider (231) adapted to the positioning slide groove (131).
7. The angle grinder housing tail cover connection structure according to claim 6, characterized in that: There are multiple positioning slots (131), and the multiple positioning slots (131) are symmetrically arranged on the extension ring (130).
8. The angle grinder housing tail cover connection structure according to claim 6, characterized in that: There are multiple positioning slots (131), and the multiple positioning slots (131) are staggered and arranged on the extension ring (130).
9. The angle grinder housing tail cover connection structure according to claim 5, characterized in that: A rotation-stop groove (132) is provided at the end of the extension ring (130), and a rotation-stop protrusion (241) that can adapt to the rotation-stop groove (132) is provided on the second step (240).
10. An angle grinder, characterized in that: The invention comprises the angle grinder housing tail cover connection structure according to any one of claims 1 to 9.