Over-voltage and under-voltage protector

Abstract

The utility model discloses an overvoltage and undervoltage protector, belongs to the technical field of overvoltage and undervoltage protectors, and solves the problems that a distribution box of an old community is not similar to a distribution box of a new campus, a rail bar is not installed in the distribution box, or a wood block is installed in the distribution box, and the overvoltage and undervoltage protector is fixed on the wood block through a screw, but the distribution box is inconvenient to install. And a conventional over-voltage and under-voltage protector cannot be adaptively mounted on a wood block, so that the application range of the over-voltage and under-voltage protector is too narrow. Comprising a shell and U-shaped blocks rotationally arranged on the back face of the shell and symmetrically arranged up and down. The over-voltage and under-voltage protector can be installed on a rail bar or a wood block, and has a short connection area and a long connection area. When the U-shaped block is installed on the rail bar, the U-shaped block is vertical, and the rail bar is embedded into a gap between the U-shaped block and the connecting plate. When the U-shaped block is installed on the wood block, the U-shaped block is manually turned into a horizontal state and fixed on the upper side and the lower side of the wood block through screws. When the connecting area is switched, the clamping block is manually pushed, so that the connecting plate moves in the sliding groove until the maximum distance is reached.

Description

Technical Field

[0001] This utility model relates to the field of over- and under-voltage protectors, and in particular to an over- and under-voltage protector. Background Technology

[0002] An over / under voltage protector is a protective device for electrical equipment, primarily used to monitor voltage changes in a circuit to prevent damage to the equipment due to excessively high or low voltage. In daily life, many electrical appliances have high requirements for voltage stability. Excessive voltage can lead to overheating, insulation damage, or even burnout, while insufficient voltage can prevent the equipment from functioning properly or even shorten its lifespan. Over / under voltage protectors monitor voltage levels in real time through a built-in voltage detection circuit. When the voltage exceeds the set safe range, the protector quickly cuts off the power supply, protecting the electrical equipment from damage. It is widely used in home, industrial, and commercial applications, such as in the power supply systems for air conditioners, refrigerators, and motors. Using over / under voltage protectors not only effectively extends the lifespan of electrical equipment but also improves electrical safety, making it an indispensable protective device in modern electrical systems.

[0003] Currently, over / under voltage protectors are generally installed via rails, using the I-shaped grooves on the back of the protector to mount it onto the rail. However, in older residential areas, the distribution boxes are not like those in newer buildings. They do not have rails installed, or they may have wooden blocks installed inside the distribution box to fix the over / under voltage protector to the wooden blocks with screws. However, conventional over / under voltage protectors cannot be installed on wooden blocks, thus limiting their applicability.

[0004] Therefore, an over / under voltage protector is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an over / under voltage protector.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An over / under voltage protector includes a housing and a U-shaped block rotatably disposed on the back of the housing and symmetrically arranged vertically. The U-shaped block can switch between a horizontal and a vertical state on the back of the housing. When the U-shaped block is in the vertical state, there is a gap between the U-shaped block and the back of the housing that can accommodate a rail. Two connecting plates are disposed on the U-shaped block away from its hinge point with the housing. The two connecting plates are detachably connected to each other and can be disposed away from each other.

[0008] Preferably, a plate is fixedly connected to the back of the housing, and a limiting block facing the U-shaped block is fixedly connected to the end of the plate away from the housing. A guide slope is provided on the side of the limiting block away from the housing.

[0009] Preferably, two sets of rotating blocks are fixedly connected to the back of the housing, with two rotating blocks in each set, and each U-shaped block is rotatably connected between the two rotating blocks in the same set via a rotating shaft.

[0010] Preferably, the connecting plate has through holes.

[0011] Preferably, both sides of the connecting plate are provided with grooves that communicate with the through holes.

[0012] Preferably, one of the connecting plates has a slot on one side facing the other connecting plate, and the connecting plate has an opening groove communicating with the slot on the side away from the U-shaped block. A plug that can be inserted into the slot and the opening groove is fixedly connected to the end face of the other connecting plate, and a locking block that engages with the inner wall of the opening groove is fixedly connected to the end of the plug that is away from the connecting plate.

[0013] Preferably, the U-shaped block has two I-shaped grooves on the side facing the connecting plate that are in the same direction as the displacement of the connecting plate, and a limiting groove communicating with the I-shaped grooves. A stop block is fixedly connected to one end of the two limiting grooves that are far apart from each other. An I-shaped slider is fixedly connected to the connecting plate and slidably connected in the I-shaped groove. A limiting slider is fixedly connected to one end of the two I-shaped sliders that face each other and slidably connected in the limiting groove.

[0014] This utility model has the following beneficial effects:

[0015] This utility model's over / under voltage protector can be installed on rails or wooden blocks, with two options: short connection area and long connection area. When installed on a rail, the U-shaped block is vertical, and the rail is embedded in the gap between the U-shaped block and the connecting plate. When installed on a wooden block, the U-shaped block is manually rotated to a horizontal position and fixed to the top and bottom sides of the wooden block with screws. To switch the connection area, the locking block is manually pushed, causing the connecting plate to move within the groove until the maximum gap is reached. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0023] Figure 7 This is a schematic diagram of the structure of this utility model. Figure 3 ;

[0024] Figure 8 This is a schematic diagram of the structure of this utility model. Figure 4 .

[0025] 1. Housing; 2. Rotating block; 3. Rotating shaft; 4. U-shaped block; 5. Connecting plate; 6. Insert plate; 7. Limiting block; 8. Through hole; 9. Countersunk groove; 10. Limiting slide groove; 11. I-shaped slide groove; 12. Stop block; 13. Limiting slider; 14. I-shaped slider; 15. Inserting block; 16. Locking block; 17. Slot; 18. Opening groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] An over / under voltage protector, such as Figures 1 to 8 As shown, it includes a housing 1 and a U-shaped block 4 rotatably disposed on the back of the housing 1 and symmetrically arranged vertically. The U-shaped block 4 can switch between a horizontal state and a vertical state on the back of the housing 1. When the U-shaped block 4 is in the vertical state, there is a gap between the U-shaped block 4 and the back of the housing 1 that can be used to accommodate the rail. Two connecting plates 5 are provided on the U-shaped block 4 away from its hinge point with the housing 1. The two connecting plates 5 are detachably connected to each other and can be disposed away from each other.

[0033] A plate 6 is fixedly connected to the back of the housing 1. A limiting block 7 facing the U-shaped block 4 is fixedly connected to the end of the plate 6 away from the housing 1. A guide slope is provided on the side of the limiting block 7 away from the housing 1. Two sets of rotating blocks 2 are fixedly connected to the back of the housing 1. There are two rotating blocks 2 in each set. A single U-shaped block 4 is rotatably connected between the two rotating blocks 2 in the same set through a rotating shaft 3.

[0034] The connecting plate 5 has a through hole 8, and both sides of the connecting plate 5 have grooves 9 that communicate with the through hole 8. One of the connecting plates 5 has a slot 17 on the side facing the other connecting plate 5, and the side of the connecting plate 5 away from the U-shaped block 4 has an opening groove 18 that communicates with the slot 17. The end face of the other connecting plate 5 is fixedly connected to a plug 15 that can be inserted into the slot 17 and the opening groove 18. The end of the plug 15 away from the connecting plate 5 is fixedly connected to a locking block 16 that engages with the inner wall of the opening groove 18.

[0035] The U-shaped block 4 has two I-shaped grooves 11 with the same displacement direction as the connecting plate 5 on the side facing the connecting plate 5, and a limiting groove 10 communicating with the I-shaped grooves 11. A stop block 12 is fixedly connected to the two limiting grooves 10 at their opposite ends. An I-shaped slider 14 is fixedly connected to the connecting plate 5 and slidably connected in the I-shaped grooves 11. A limiting slider 13 is fixedly connected to the two I-shaped sliders 14 at their opposite ends and slidably connected in the limiting grooves 10.

[0036] In practical applications, this utility model has various uses, namely, the over / under voltage protector can be installed in different scenarios, such as on rails and wooden blocks. At the same time, when the over / under voltage protector needs to be installed on rails and wooden blocks, it is also divided into two cases: short connection area and long connection area, depending on the connection area of ​​the over / under voltage protector.

[0037] When this over / under voltage protector needs to be installed on the rail, the U-shaped block 4 needs to be kept vertical, so that there is a gap between the U-shaped block 4 and the connecting plate 5 relative to the back of the housing 1, so that the Ω-shaped rail can be inserted into the gap.

[0038] If the over / under voltage protector needs to be installed on the wooden block, and the U-shaped block 4 needs to be switched from a vertical to a horizontal state, then the U-shaped block 4 needs to be rotated manually. The U-shaped block 4 rotates relative to the rotating block 2 through the rotating shaft 3. At the same time, the U-shaped block 4 can elastically deform by pushing the insert plate 6 and the limiting block 7. When the U-shaped block 4 is in a horizontal state, the insert plate 6 still fits the U-shaped block 4. At the same time, the limiting block 7 restricts the reverse deflection of the U-shaped block 4. At this time, the U-shaped blocks 4 on both sides are located on the upper and lower sides of the wooden block. Then, the screws are threaded to the wooden block through the through hole 8 until the screw head is inserted into the groove 9, and the installation of the over / under voltage protector is completed.

[0039] If it is necessary to switch between the short connection area and the long connection area of ​​the over / under voltage protector, the operator only needs to manually insert his finger or other rod into the opening slot 18 and then push the locking block 16. This causes the locking block 16 to cause the insertion block 15 to elastically deform, so that the locking block 16 no longer cooperates with the slot 17 and the opening slot 18 to restrict the two connecting plates 5. In this way, the two connecting plates 5 can be moved in the I-shaped sliding groove 11 by the I-shaped slider 14 until the limiting slider 13 abuts against the stop block 12, at which point the two connecting plates 5 reach the maximum distance.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An over- and under-voltage protector, characterized by The device includes a housing (1) and a U-shaped block (4) rotatably disposed on the back of the housing (1) and symmetrically arranged vertically. The U-shaped block (4) switches between a horizontal and a vertical state on the back of the housing (1). When the U-shaped block (4) is in the vertical state, there is a gap between the U-shaped block (4) and the back of the housing (1) that can accommodate a rail. Two connecting plates (5) are disposed on the U-shaped block (4) away from its hinge with the housing (1). The two connecting plates (5) are detachably connected to each other and can be disposed away from each other.

2. An over / under voltage protector according to claim 1, characterized in that A plate (6) is fixedly connected to the back of the housing (1). A limiting block (7) facing the U-shaped block (4) is fixedly connected to the end of the plate (6) away from the housing (1). A guide slope is provided on the side of the limiting block (7) away from the housing (1).

3. An over / under voltage protector according to claim 2, wherein Two sets of rotating blocks (2) are fixedly connected to the back of the housing (1). Each set of rotating blocks (2) consists of two blocks. A single U-shaped block (4) is rotatably connected between the two rotating blocks (2) in the same set via a rotating shaft (3).

4. The overvoltage protector of claim 1, wherein The connecting plate (5) has a through hole (8).

5. An under / over voltage protector according to claim 4, wherein Both sides of the connecting plate (5) are provided with grooves (9) that communicate with the through holes (8).

6. An under / over voltage protector according to claim 3, wherein One of the connecting plates (5) has a slot (17) on the side facing the other connecting plate (5), and the side of the connecting plate (5) away from the U-shaped block (4) has an opening groove (18) communicating with the slot (17). The end face of the other connecting plate (5) is fixedly connected with a plug (15) that can be inserted into the slot (17) and the opening groove (18). The end of the plug (15) away from the connecting plate (5) is fixedly connected with a locking block (16) that engages with the inner wall of the opening groove (18).

7. An under / over voltage protector according to claim 6, wherein The U-shaped block (4) has two I-shaped grooves (11) on the side facing the connecting plate (5) that are in the same displacement direction as the connecting plate (5) and a limiting groove (10) that communicates with the I-shaped grooves (11). A stop block (12) is fixedly connected to one end of the two limiting grooves (10) that are far apart from each other. An I-shaped slider (14) is fixedly connected to the connecting plate (5) and is slidably connected to the I-shaped groove (11). A limiting slider (13) is fixedly connected to one end of the two I-shaped sliders (14) that face each other and is slidably connected to the other end of the limiting groove (10).

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