Protective device and low voltage electric appliance

Abstract

The application relates to the technical field of low-voltage electrical apparatus, and particularly discloses a protective device and a low-voltage electrical apparatus. The protective device comprises a protective cover, a connecting plate and a face cover. The protective cover is detachably installed on a face cover, the face cover is installed on the body of the low-voltage electrical apparatus, the protective cover is detachably connected with the body of the low-voltage electrical apparatus through the connecting plate, the protective cover and the face cover are in a split structure, the face cover is clamped between the connecting plate and the protective cover, and the connecting position of the connecting plate and the protective cover is locked and shielded by the face cover. In the state that the face cover is in a closed window, the face cover cannot be detached, and thus the protective device cannot lose the shielding protection button function by detaching the face cover. Only in the state that the face cover is in an open window, the face cover can be detached, so that the protective device has the shielding protection button function in a true sense.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more particularly to a protective device and a low-voltage electrical appliance. Background Technology

[0002] Low-voltage electrical appliances are used in low-voltage power distribution systems. These appliances are equipped with buttons that have specific functions. These buttons should not be touched arbitrarily unless there is a specific operational need. For example, circuit breakers and disconnect switches have closing and opening buttons, which are located on the control panel. To prevent these buttons from being directly exposed and causing misoperation, they are generally covered and protected to prevent direct human contact.

[0003] In existing technology, to solve the above problems, a protective cover is usually installed on the outside of the button. The protective cover has a window, and a faceplate that can close or open the window is provided. The faceplate is hinged to the protective cover and can be locked onto the protective cover, preventing it from being opened arbitrarily, thus protecting the closing and opening buttons. The protective cover is installed on the faceplate of low-voltage electrical appliances, and usually the protective cover and faceplate are an integral structure. When the faceplate is removed, the protective cover loses its function of covering and protecting the button, posing a certain safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a protective device and a low-voltage electrical appliance, which solves the problem that the protective cover and faceplate lose their function of shielding and protecting the buttons when the faceplate of the low-voltage electrical appliance is directly removed.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On one hand, a protective device is provided, mounted on the faceplate of a low-voltage electrical appliance, for covering the buttons on the low-voltage electrical appliance, the protective device comprising:

[0007] A protective cover is detachably connected to the face mask, and the protective cover has a window that is positioned directly opposite the button;

[0008] The connecting plate is connected at one end to the body of the low-voltage electrical appliance and at the other end to the protective cover in a detachable manner.

[0009] The face cover is hinged to the protective cover. The face cover can close or open the window. When the face cover closes the window, the face cover can be locked onto the protective cover, and the face cover can cover the position where the connecting plate is connected to the protective cover.

[0010] As an optional technical solution for the above-mentioned protective device, the connecting plate includes a first connecting plate and a second connecting plate, the second connecting plate being connected to the first connecting plate at an angle, the first connecting plate being connected to the upper surface of the body, and the second connecting plate being placed on the front side of the body and connected to the protective cover.

[0011] As an optional technical solution for the aforementioned protective device, the connecting plate is provided with at least two first connecting holes, and a first connector passes through the first connecting holes to be detachably connected to the body.

[0012] As an optional technical solution for the above-mentioned protective device, the connecting plate is provided with at least two second connecting holes, the protective cover is provided with a third connecting hole corresponding to the second connecting hole, the second connecting member passes through the third connecting hole and connects with the second connecting hole, and the face cover can cover the second connecting member.

[0013] As an optional technical solution for the above-mentioned protective device, the protective cover is provided with at least two openings, each of the openings is respectively provided with a face cover, and the number of the third connecting holes provided on the protective cover is less than or equal to the number of face covers.

[0014] As an optional technical solution for the aforementioned protective device, the face cover closes the opening, and the face cover can cover the connection position between the protective cover and the face shield.

[0015] As an optional technical solution for the aforementioned protective device, the protective cover is provided with at least two fourth connection holes, and a third connector passes through the fourth connection holes to connect with the face mask, and the face cover can cover the third connector.

[0016] As an optional technical solution for the aforementioned protective device, the protective cover is provided with a padlock hole, the faceplate is provided with a connecting ear plate, and the connecting ear plate is provided with a lock hole. When the faceplate closes the opening, the padlock can be hooked onto the padlock hole and the lock hole.

[0017] As an optional technical solution for the above-mentioned protective device, the protective cover is provided with a fixing member, the fixing member is vertically protruding with a hanging ear plate, the hanging ear plate is provided with a padlock hole, the connecting ear plate is vertically connected to the face cover, the face cover closes the opening, the connecting ear plate is parallel to the hanging ear plate, and the lock hole is correspondingly set with the padlock hole.

[0018] On the other hand, a low-voltage electrical appliance is provided, including a body, a face shield, and a protective device as described in any one of the above, wherein a button is provided on the front side of the body, and the face shield is provided on the front side of the body.

[0019] The beneficial effects of this invention are:

[0020] The protective device provided by this invention has a protective cover that can be detachably installed on a face shield. The face shield is installed on the body of the low-voltage electrical appliance. The protective cover is detachably connected to the body of the low-voltage electrical appliance via a connecting plate. The protective cover and the face shield are separate structures. The face shield is sandwiched between the connecting plate and the protective cover, and the connection position between the connecting plate and the protective cover is blocked by the face cover being locked. That is, the face shield cannot be removed when the face cover is in the closed / open state. Therefore, the protective device cannot lose its function of blocking the protective button by removing the face shield. The face shield can only be removed when the face cover is in the open / open state, so that the protective device can truly function as a blocking / protective button. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the low-voltage electrical appliance with an openable window provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the closed window on the front cover of the low-voltage electrical appliance provided in the embodiment of the present invention;

[0023] Figure 3 This is a partial explosion diagram of a low-voltage electrical appliance provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection between the connecting plate and the body provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection between the connecting plate, the body, and the protective cover provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the protective cover and faceplate provided in the embodiments of the present invention;

[0027] Figure 7 This is a schematic diagram of the connecting plate provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Protective cover; 2. Window; 3. Connecting plate; 4. Face cover; 5. Second connecting piece; 6. Hinge shaft;

[0030] 11. Third connecting hole; 12. Fourth connecting hole; 13. Padlock hole; 14. Fixing component; 15. Hanging ear plate; 16. First hinge seat;

[0031] 31. First connecting plate; 32. Second connecting plate; 33. First connecting hole; 34. Second connecting hole;

[0032] 41. Connecting ear plate; 42. Lock hole;

[0033] a. Up and down direction; b. Left and right direction; c. Front and back direction;

[0034] 100. Padlock; 200. Body; 201. Button; 202. Face mask; 300. Protective device. Detailed Implementation

[0035] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] like Figure 1 and Figure 2 As shown, this application provides a low-voltage electrical appliance, which includes a body 200, a face shield 202, and a protective device 300. The body 200 is provided with a button 201, which is located on the front side of the body 200. The face shield 202 covers the front side of the body 200, and the protective device 300 is disposed on the face shield 202. The protective device 300 is used to block the button 201 on the low-voltage electrical appliance.

[0039] The protective device 300 includes a protective cover 1 and a face cover 4. The protective cover 1 is installed on the face cover 202. The protective cover 11 is provided with a window 2. The window 2 is positioned opposite the button 201. The face cover 4 can close or open the window 2 to cover and protect the button 201, so as to prevent people from directly contacting the button 201 and causing personal safety accidents.

[0040] For example, the low-voltage electrical appliance can be a circuit breaker, a disconnector, etc. The circuit breaker or disconnector is equipped with a closing button and a opening button. The protective cover 1 is installed on the outside of the closing button and the opening button. By opening the cover 4, the closing button or the opening button can be operated through the window 2. The low-voltage electrical appliance can also be other types of electrical appliances, which will not be described in detail here.

[0041] like Figure 3 , Figure 4 and Figure 5 As shown, the protective cover 1 and the face shield 202 are detachably connected, and the face cover 4 is hinged to the protective cover 1. The face cover 4 can open or close the opening 2. The protective device 300 also includes a connecting plate 3, one end of which is connected to the body 200 of the low-voltage electrical appliance, and the other end of which is detachably connected to the protective cover 1. When the face cover 4 closes the opening 2, the face cover 4 can be locked onto the protective cover 1, and the face cover 4 can cover the position where the connecting plate 3 is connected to the protective cover 1.

[0042] In this embodiment, the protective device includes a protective cover 1 that is detachably mounted on a face shield 202. The face shield 202 is mounted on the body 200 of the low-voltage electrical appliance. The protective cover 1 is detachably connected to the body 200 of the low-voltage electrical appliance via a connecting plate 3. The protective cover 1 and the face shield 202 are separate structures. The face shield 202 is sandwiched between the connecting plate 3 and the protective cover 1 and is locked by a face cover 4 to block the connection between the connecting plate 3 and the protective cover 1. That is, the face shield 202 cannot be removed when the face cover 4 is in the closed window 2 state. Therefore, the protective device 300 cannot lose the function of blocking the protective button 201 by removing the face shield 202. The face shield 202 can only be removed when the face cover 4 is in the open window 2 state, so that the protective device 300 can truly function as the blocking protective button 201.

[0043] like Figure 6 As shown, one end of the face cover 4 is hinged to the protective cover 1. Specifically, the protective cover 1 is provided with a hinge shaft 6, and the face cover 4 is provided with a hinge hole. The hinge shaft 6 passes through the hinge hole, and the face cover 4 can rotate relative to the protective cover 1. Optionally, the face cover 4 can be flipped up, down, or sideways relative to the protective cover 1, which is not specifically limited here.

[0044] Combination Figure 5 and Figure 6As shown, the face cover 4 can be locked onto the protective cover 1. In some embodiments, the protective cover 1 is provided with a padlock hole 13, the face cover 4 is provided with a connecting ear plate 41, and the connecting ear plate 41 is provided with a lock hole 42. When the face cover 4 closes the opening 2, the padlock 100 can be hooked onto the padlock hole 13 and the lock hole 42 to lock the face cover 4, so as to achieve the purpose of completely locking the face cover 4.

[0045] Furthermore, the protective cover 1 is provided with a fixing member 14, and a hanging ear plate 15 is vertically provided on the fixing member 14. The hanging ear plate 15 is provided with a padlock hole 13. The connecting ear plate 41 is vertically connected to the face cover 4. The face cover 4 closes the window 2. The connecting ear plate 41 is parallel to the hanging ear plate 15, and the lock hole 42 is correspondingly provided with the padlock hole 13, so that the padlock 100 can be hooked onto the padlock hole 13 and the lock hole 42.

[0046] The protective cover 1 has at least two openings 2, each opening 2 is provided with a face cover 4, and a fixing member 14 is provided between two adjacent openings 2 to facilitate the setting of a padlock hole 13 to lock the face cover 4. In addition, the face cover 4 is preferably flipped up or down relative to the protective cover 1, so that it will not interfere with the fixing member 14 during the opening or closing of the face cover 4.

[0047] The protective cover 1 has a first hinge seat 16 protruding at the position of the shaft hole. The first hinge seat 16 has a shaft hole, and one end of the hinge shaft 6 is inserted into the shaft hole. The cover 4 is placed between the first hinge seat 16 and the fixing member 14 to limit the degree of freedom of the cover 4 in the left-right direction b. In order not to affect the rotation of the cover 4, the cover 4 is fitted with a clearance between the cover 4, the first hinge seat 16 and the fixing member 14, but the clearance should not be too large so as not to affect the cover 4 from closing the window 2.

[0048] Reference Figures 4 to 7 As shown, the connecting plate 3 connects the body 200 of the low-voltage electrical appliance and the protective cover 1. In some embodiments, the connecting plate 3 includes a first connecting plate 31 and a second connecting plate 32. The second connecting plate 32 is connected to the first connecting plate 31 at an angle. The first connecting plate 31 is connected to the upper surface of the body 200, and the second connecting plate 32 is positioned on the front side of the body 200 and connected to the protective cover 1. During assembly, the first connecting plate 31 is fixed to the body 200, the protective cover 1 is installed on the face shield 202, and then the face shield 202 is installed on the front side of the body 200, connecting the protective cover 1 to the second connecting plate 32. After the low-voltage electrical appliance is fully assembled, the connection between the first connecting plate 31 and the body 200 is also shielded inside the low-voltage electrical appliance, ensuring that the face shield 202 cannot be disassembled. The upper surface of the body 200 is the surface where the body 200 is positioned upwards along the vertical direction a. The front side of the body 200 is the position where the body 200 is positioned forwards along the front-back direction c.

[0049] Optionally, the first connecting plate 31 is placed on the upper surface of the body 200, and the second connecting plate 32 is placed on the front side of the body 200. The angle between the first connecting plate 31 and the second connecting plate 32 is 90°, so as to facilitate the connection of the protective cover 1 and the second connecting plate 32.

[0050] The first connecting plate 31 and the second connecting plate 32 are integral structures. Preferably, the connecting plate 3 is a sheet metal part, which is formed by bending to form the first connecting plate 31 and the second connecting plate 32.

[0051] In some embodiments, the connecting plate 3 is provided with at least two first connecting holes 33, and a first connector passes through the first connecting holes 33 to be detachably connected to the body 200. Providing multiple first connecting holes 33 and connecting the body 200 and the connecting plate 3 through multiple first connectors prevents the connecting plate 3 from rotating relative to the body 200, thereby positioning the connecting plate 3 and facilitating the connection between the protective cover 1 and the connecting plate 3.

[0052] Optionally, the connecting plate 3 is provided with two first connecting holes 33, and the first connecting member is a screw-in member, which passes through the first connecting holes 33 and is screwed to the body 200. Under the premise of fixing the connecting plate 3 to the body 200 and fixing the position of the connecting plate 3, the number of openings of the first connecting holes 33 is minimized, thereby reducing the number of first connecting members, improving assembly efficiency, and reducing the production cost of low-voltage electrical appliances.

[0053] In some embodiments, the connecting plate 3 is provided with at least two second connecting holes 34, and the protective cover 1 is provided with a third connecting hole 11 corresponding to the second connecting holes 34. The second connecting member 5 passes through the third connecting hole 11 and connects to the second connecting hole 34. The face cover 4 can cover the second connecting member 5, preventing the face cover 202 from being removed by human disassembly of the second connecting member 5, thus preventing the protective device 300 from losing its function of protecting the button 201. In addition, the connecting plate 3 is provided with at least two second connecting holes 34, that is, there are no fewer than two second connecting members 5, to prevent the protective cover 1 from rotating when it is not connected to the face cover 202, thereby failing to effectively protect the button 201.

[0054] Optionally, the second connecting hole 34 is a threaded hole, and the second connecting member 5 is a screw-in member. The second connecting member 5 passes through the third connecting hole 11 and is screwed into the second connecting hole 34. When the face mask 202 is placed on the front side of the main body 200, the connection between the protective cover 1 and the connecting plate 3 can be achieved by installing the second connecting member 5 from the front side, which facilitates assembly and disassembly.

[0055] The low-voltage electrical appliance body 200 is equipped with multiple buttons 201. Correspondingly, the protective cover 1 is equipped with at least two openings 2. The number of openings 2 corresponds to the number of buttons 201. Each opening 2 is equipped with a face cover 4. The number of third connection holes 11 on the protective cover 1 is less than or equal to the number of face covers 4. It can be understood that if there are two third connection holes 11 and two, three, or more openings 2, one third connection hole 11 can be set at the position corresponding to the outermost face cover 4. The second connection holes 34 on the connecting plate 3 are corresponding to the third connection holes 11 to ensure that the connection force between the connecting plate 3 and the protective cover 1 is even. The number of third connection holes 11 can also be the same as the number of openings 2. If there are three, four, or more openings 2, three, four, or more third connection holes 11 can be set accordingly. One third connection hole 11 is set at the position corresponding to each face cover 4 to improve the stability of the connection between the connecting plate 3 and the protective cover 1.

[0056] In some embodiments, when the face cover 4 closes the window 2, the face cover 4 can cover the connection position between the protective cover 1 and the face mask 202. When the face cover 4 is in the closed window 2 state, the protective cover 1 and the face mask 202 cannot be disassembled, which improves the protective safety of the protective device 300.

[0057] Optionally, the protective cover 1 is provided with at least two fourth connection holes 12, and the third connector passes through the fourth connection holes 12 to connect to the face mask 202. The face cover 4 can cover the third connector. When the face cover 4 is in the closed window 2 state, the protective cover 1 and the face mask 202 cannot be disassembled.

[0058] The third connector is a screw-in connector. The third connector passes through the fourth connecting hole 12 and is screwed into the face mask 202, which makes it convenient to install the protective cover 1 on the face mask 202. The third connector can be installed from the front side of the protective cover 1, which is convenient for operation.

[0059] At least two fourth connection holes 12 are provided, and two, three, or more windows 2 are provided. One fourth connection hole 12 can be provided at the corresponding position of each outermost faceplate 4 to ensure even force distribution on the connection between the protective cover 1 and the face mask 202, and to prevent the protective cover 1 from rotating relative to the face mask 202. Alternatively, the number of fourth connection holes 12 can be the same as the number of windows 2, with three, four, or more windows 2 and correspondingly three, four, or more fourth connection holes 12. One fourth connection hole 12 is provided at the corresponding position of each faceplate 4 to improve the stability of the connection between the protective cover 1 and the face mask 202.

[0060] When assembling the protective device 300 provided in this embodiment onto the body 200 of the low-voltage electrical appliance, firstly, the protective cover 1 is installed on the face shield 202, one end of the connecting plate 3 is fixed to the body 200, the face shield 202 is installed on the front side of the body 200, and the opening 2 on the protective cover 1 is positioned directly opposite the button 201. Then, the protective cover 1 and the connecting plate 3 are connected, thus completing the installation of the protective device 300. When the button 201 does not need to be adjusted, the face cover 4 closes the opening 2, and the face cover 4 is locked onto the protective cover 1, preventing accidental disassembly of the face shield 202 to expose the button 201 and cause it to be operated.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A protective device, installed on the faceplate (202) of a low-voltage electrical appliance, for covering the button (201) on the low-voltage electrical appliance, characterized in that, The protective device includes: The protective cover (1) is detachably connected to the face mask (202), and the protective cover (1) is provided with a window (2) that is positioned directly opposite the button (201). The connecting plate (3) is connected at one end to the body (200) of the low-voltage electrical appliance and at the other end to the protective cover (1). The face shield (202) is sandwiched between the connecting plate (3) and the protective cover (1). The face cover (4) is hinged to the protective cover (1). The face cover (4) can close or open the window (2). When the face cover (4) closes the window (2), the face cover (4) can be locked onto the protective cover (1), and the face cover (4) can cover the position where the connecting plate (3) is connected to the protective cover (1).

2. The protective device according to claim 1, characterized in that, The connecting plate (3) includes a first connecting plate (31) and a second connecting plate (32). The second connecting plate (32) is connected to the first connecting plate (31) at an angle. The first connecting plate (31) is connected to the upper surface of the body (200). The second connecting plate (32) is placed on the front side of the body (200) and connected to the protective cover (1).

3. The protective device according to claim 1, characterized in that, The connecting plate (3) is provided with at least two first connecting holes (33), and the first connector passes through the first connecting holes (33) and is detachably connected to the body (200).

4. The protective device according to claim 1, characterized in that, The connecting plate (3) is provided with at least two second connecting holes (34), and the protective cover (1) is provided with a third connecting hole (11) corresponding to the second connecting hole (34). The second connecting piece (5) passes through the third connecting hole (11) and connects to the second connecting hole (34). The face cover (4) can cover the second connecting piece (5).

5. The protective device according to claim 4, characterized in that, The protective cover (1) is provided with at least two openings (2), and each opening (2) is respectively provided with a face cover (4). The number of the third connecting holes (11) provided on the protective cover (1) is less than or equal to the number of face covers (4).

6. The protective device according to claim 1, characterized in that, The face cover (4) closes the window (2), and the face cover (4) can cover the connection position between the protective cover (1) and the face mask (202).

7. The protective device according to claim 6, characterized in that, The protective cover (1) is provided with at least two fourth connection holes (12), and the third connector passes through the fourth connection holes (12) to connect with the face mask (202). The face cover (4) can cover the third connector.

8. The protective device according to claim 1, characterized in that, The protective cover (1) is provided with a padlock hole (13), the face cover (4) is provided with a connecting ear plate (41), the connecting ear plate (41) is provided with a lock hole (42), the face cover (4) closes the window (2), and the padlock (100) can be hooked onto the padlock hole (13) and the lock hole (42).

9. The protective device according to claim 8, characterized in that, The protective cover (1) is provided with a fixing member (14), and a hanging ear plate (15) is vertically protruding on the fixing member (14). The hanging ear plate (15) is provided with a padlock hole (13). The connecting ear plate (41) is vertically connected to the face cover (4). The face cover (4) closes the window (2). The connecting ear plate (41) is parallel to the hanging ear plate (15), and the lock hole (42) is correspondingly set with the padlock hole (13).

10. A low-voltage electrical appliance, characterized in that, The device includes a body (200), a face shield (202), and a protective device (300) according to any one of claims 1-9. A button (201) is provided on the front side of the body (200), and the face shield (202) is provided on the front side of the body (200).

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