Device with over-current protection

Abstract

The utility model provides a device with overcurrent protection. The device comprises a housing, a relay and a circuit board. A plurality of grooves and protrusions are arranged in the shell and used for installing all parts. The relay is installed in the middle of the shell. The circuit board is arranged in the shell on the left side of the relay and is electrically connected with the relay; the over-current protection relay further comprises a control device used for controlling the relay to be opened and closed. The control device is mounted in the shell on the right side of the relay; the control device comprises a sliding block, a handle, a signal receiving device and a limiting device. The sliding block is installed in the shell in a sliding mode. The limiting device is arranged in the shell above the sliding block; the signal receiving device is arranged in the shell below the sliding block; according to the utility model, the protector installed in the equipment is provided with the control device for rapid opening and closing, so that when the equipment needs to be overhauled or a fuse in the protector needs to be replaced, the whole circuit is rapidly opened and closed, and the working time is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of current protection devices, specifically relating to a device with overcurrent protection. Background Technology

[0002] An overcurrent protector is a device used for overload protection. When it enters the set state, the relay inside the protector automatically releases, and the protector exits the protection state, effectively preventing erroneous operation of the motor when in the set state. It can be widely used for the protection and monitoring of three-phase motors and other electrical appliances in industries such as machinery, metallurgy, building materials, chemicals, and textiles. In daily use, when the protector needs maintenance or internal fuse replacement, the entire equipment must be powered off before operation. Disconnecting the equipment through the main switch takes a certain amount of time, and this time is even longer when the equipment is far from the main switch. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a control device with an overcurrent protection relay that can quickly open and close the circuit breaker.

[0004] This utility model is achieved through the following technical solution:

[0005] A device with overcurrent protection includes a housing, a relay, and a circuit board. The housing has several grooves and protrusions for mounting various components. The relay is mounted in the middle of the housing. The circuit board is mounted in the housing to the left of the relay and is electrically connected to the relay (all of the above are prior art). The overcurrent protection relay also includes a control device for controlling the opening and closing of the relay. The control device is mounted in the housing to the right of the relay. The control device includes a slider, a handle, a signal receiving device, and a limiting device. The slider is slidably mounted in the housing, with its right end extending out of the right side wall of the housing. The limiting device is mounted in the housing above the slider to limit the slider's movement to either the left or right ends. The signal receiving device is mounted in the housing below the slider to receive signals when the slider moves to either the left or right ends. A handle is mounted on the right end of the slider. The top of the slider has two grooves, one on the right and the other on the right. The limiting device includes a protrusion and a spring. The protrusion is installed in the housing above the slider and cooperates with the grooves to limit the slider position. One end of the spring is installed on the housing, and the other end is connected to the protrusion for protrusion reset. To make it easier for the slider to disengage from the grooves, the two ends of the grooves are provided with arc surfaces. The bottom of the slider has two protrusions, one on the right and the other on the right. The signal receiving device includes a micro switch and a micro switch. The micro switch and the micro switch are installed in the housing below the slider. The micro switch is located to the right of the micro switch. The protrusions cooperate with the micro switch and the micro switch respectively. The micro switch and the micro switch are electrically connected to the circuit board.

[0006] The beneficial effects of this utility model are:

[0007] This utility model incorporates a rapid opening and closing control device in the protector installed in the equipment. When the equipment needs maintenance or the fuse in the protector needs to be replaced, the entire circuit can be quickly opened and closed, shortening the working time. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0011] In the figure: 1-House; 2-Relay; 3-Circuit board; 4-Slider; 41-Protrusion 1; 42-Protrusion 2; 43-Groove 1; 44-Groove 2; 5-Handle; 6-Micro switch 1; 7-Micro switch 2; 8-Protrusion; 9-Spring. Detailed Implementation

[0012] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0013] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0014] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0015] like Figure 1 , Figure 2 The device shown includes a housing 1, a relay 2, a circuit board 3, and a control device.

[0016] The housing 1 has several grooves and protrusions for installing various components.

[0017] The relay 2 is installed in the middle of the housing 1.

[0018] The circuit board 3 is installed inside the housing 1 on the left side of the relay 2 and is electrically connected to the relay 2. It is equipped with a control circuit for controlling the automatic opening and closing of the relay 2.

[0019] The control device is installed inside the housing 1 on the right side of the relay 2; the control device includes a slider 4, a handle 5, a signal receiving device, and a limiting device; the slider 4 is slidably installed inside the housing 1, and the right end of the slider 4 extends out of the right side wall of the housing 1; the limiting device is installed inside the housing 1 above the slider 4, and is used to limit the slider 4 when it slides to the left or right ends; the signal receiving device is installed inside the housing 1 below the slider 4, and is used to receive signals when the slider 4 slides to the left or right ends; the top of the slider 4 is provided with a first groove 43 and a second groove 44; the first groove 43 is located to the right of the second groove 44; the limiting device... The device includes a protrusion 8 and a spring 9. The protrusion 8 is installed inside the housing 1 above the slider 4 and cooperates with groove 1 43 and groove 2 44 to limit the slider 4. When the slider 4 slides to the right, the protrusion 8 is engaged in groove 2 44 due to the elastic force of the spring 9. When the slider 4 slides to the left, the protrusion 8 is engaged in groove 1 43 due to the elastic force of the spring 9. One end of the spring 9 is installed on the housing 1, and the other end is connected to the protrusion 8 for resetting the protrusion 8. In order to facilitate the protrusion 8 to disengage from groove 1 43 and groove 2 44 more easily when the slider 4 is manually pulled, the two ends of groove 1 43 and groove 2 44 are provided with arc surfaces.

[0020] The bottom of the slider 4 is provided with a first protrusion 41 and a second protrusion 42; the first protrusion 41 is located to the right of the second protrusion 42; the signal receiving device includes a first micro switch 6 and a second micro switch 7; the first micro switch 6 and the second micro switch 7 are installed in the housing 1 below the slider 4; the first micro switch 6 is located to the right of the second micro switch 7; the first protrusion 41 and the second protrusion 42 cooperate with the first micro switch 6 and the second micro switch 7 respectively. When the slider 4 slides to the right, the second protrusion 42 touches the second micro switch 7 to open the circuit; when the slider 4 slides to the left, the first protrusion 41 touches the first micro switch 6 to close the circuit; the first micro switch 6 and the second micro switch 7 are electrically connected to the circuit board 3.

[0021] The handle 5 is installed on the right end of the slider 4.

[0022] The working principle of this utility model:

[0023] Pull slider 4 to the right using handle 5. At this time, protrusion 42 touches microswitch 7, which transmits a signal to circuit board 3. The control circuit on circuit board 3 controls relay 2 to open. Due to the elasticity of spring 9, protrusion 8 falls into groove 44, limiting slider 4. Push slider 4 to the left using handle 5. At this time, protrusion 8 disengages from groove 44 due to the pushing force. Then protrusion 42 separates from microswitch 7, and protrusion 41 touches microswitch 6, which transmits a signal to circuit board 3. The control circuit on circuit board 3 controls relay 2 to close. Due to the elasticity of spring 9, protrusion 8 falls into groove 43, limiting slider 4.

[0024] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A device with overcurrent protection, comprising a housing (1), a relay (2), and a circuit board (3); the housing (1) is provided with a plurality of grooves and protrusions for mounting various components; the relay (2) is mounted in the middle of the housing (1); the circuit board (3) is mounted in the housing (1) to the left of the relay (2) and is electrically connected to the relay (2); characterized in that: It also includes a control device for controlling the opening and closing of the relay (2); the control device is installed in the housing (1) on the right side of the relay (2); the control device includes a slider (4), a handle (5), a signal receiving device and a limiting device; the slider (4) is slidably installed in the housing (1), and the right end of the slider (4) extends out of the right side wall of the housing (1); the limiting device is installed in the housing (1) above the slider (4) and is used to limit the slider (4) when it slides to the left and right ends; the signal receiving device is installed in the housing (1) below the slider (4) and is used to receive signals when the slider (4) slides to the left and right ends.

2. The device with overcurrent protection according to claim 1, characterized in that... The slider (4) has a handle (5) installed on its right end.

3. A device with overcurrent protection according to claim 1, characterized in that... The top of the slider (4) is provided with a first groove (43) and a second groove (44); the first groove (43) is located to the right of the second groove (44); the limiting device includes a protrusion (8) and a spring (9); the protrusion (8) is installed in the housing (1) above the slider (4) and cooperates with the first groove (43) and the second groove (44) for limiting the slider (4); one end of the spring (9) is installed on the housing (1) and the other end is connected to the protrusion (8) for resetting the protrusion (8).

4. A device with overcurrent protection according to claim 3, characterized in that... The two ends of the first groove (43) and the second groove (44) are provided with arc surfaces.

5. A device with overcurrent protection according to claim 1, characterized in that... The bottom of the slider (4) is provided with a protrusion 1 (41) and a protrusion 2 (42); the protrusion 1 (41) is located to the right of the protrusion 2 (42); the signal receiving device includes a micro switch 1 (6) and a micro switch 2 (7); the micro switch 1 (6) and the micro switch 2 (7) are installed in the housing (1) below the slider (4); the micro switch 1 (6) is located to the right of the micro switch 2 (7); the protrusion 1 (41) and the protrusion 2 (42) cooperate with the micro switch 1 (6) and the micro switch 2 (7) respectively; the micro switch 1 (6) and the micro switch 2 (7) are electrically connected to the circuit board (3).

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