Manual reset overload current protector

Abstract

The utility model provides a manual reset overload current protector, which comprises a first shell and a second shell, two sides of the first shell are fixedly connected with mounting sleeves, a first conductive block and a second conductive block are arranged in the first shell and the second shell, and conductive ports are arranged at the upper ends of the first conductive block and the second conductive block. The upper ends of the two sets of conductive ports abut against bimetallic strips, the bimetallic strip at the upper end of the first conductive block is fixed through a fixing block, and the front surface of the first conductive block and the front surface of the second conductive block are fixedly connected with conductive strips. According to the utility model, through the arrangement of the locking mechanism, the insertion rod can be inserted into the insertion slot on the adjusting rod during resetting, so that the stability of the adjusting rod is kept, the insulation plate is ensured to be kept stable in the operation process, the possibility of accidental displacement or looseness is reduced, the stability and reliability of the device are improved, and the risk of accidents is reduced; the operation safety is improved, and the safety of equipment and personnel is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical appliances, and in particular relates to a manual reset overload current protector. Background Art

[0002] Safety accidents are inevitable in household appliances. Therefore, in order to enhance the safety of electrical appliances, a current overload protector has come into being. The current current overload protector works on the principle of using the material properties of the bimetallic strip to switch the circuit on and off. When the current is overloaded, the bimetallic strip is deformed by heat, disconnecting the circuit. When the circuit returns to normal, pressing the reset button connects the circuit.

[0003] The existing authorization number is CN201222470Y, which discloses a manually resettable current overload protector, including a shell, which is formed by buckling a base and a cover plate, a static terminal and a moving terminal extending into the shell, a static contact is arranged at the inner end of the static terminal, and the inner end of the moving terminal is connected to a bimetallic strip, and the bimetallic strip is provided with a moving contact matched with the static contact, a positioning pin is arranged on the base, and the positioning pin rotates to match a reset springboard; one end of the reset springboard is arc-shaped, and a springboard reset spring is placed between the end and the shell, and the end of the reset springboard is matched with a reset button, and the reset button can move along a fixed frame arranged in the shell, and a reset spring is placed between the reset button and the fixed frame: after the moving contact is disconnected from the static contact, the reset button is pressed, and the reset button squeezes the arc-shaped end of the reset springboard, and the reset springboard rotates with the positioning pin as the axis, and the other end of the reset springboard presses the bimetallic strip to make the moving contact contact with the static contact. The current overload protector of the utility model has the advantages of simple structure and stable technical performance. However, the above-mentioned manually resettable current overload protector lacks a fixed structure for the reset mechanism when resetting the bimetal strip, which may cause the reset mechanism to shift or loosen during operation, increasing the risk of accidental triggering, which may cause damage to the circuit or equipment, and even endanger personnel safety. Therefore, it is necessary to provide a new manual reset overload current protector to solve the above-mentioned problems. Utility Model Content

[0004] The technical content of the utility model is to provide a new manual reset overload current protector.

[0005] In order to solve the above problems, the utility model provides a manual reset overload current protector, including a first shell and a second shell, both sides of the first shell are fixedly connected with mounting sleeves, the first shell and the second shell are provided with a first conductive block and a second conductive block, and the upper ends of the first conductive block and the second conductive block are both provided with conductive ports, and the upper ends of the two groups of conductive ports are both in contact with bimetallic strips, the bimetallic strips at the upper end of the first conductive block are fixed by a fixing block, the front surfaces of the first conductive block and the second conductive block are both fixedly connected with conductive strips, the upper end of the second conductive block is provided with a reset mechanism, and one side of the reset mechanism is provided with a locking mechanism.

[0006] As a further solution of the present invention, a plug-in block is fixedly installed on one side of the first shell and the second shell that are close to each other, a slot matching the plug-in block is provided on the first shell and the second shell, a bolt is provided on the plug-in block, and a screw hole matching the bolt is provided on the first shell and the second shell. The bolt connection method is easy to install and disassemble.

[0007] As a further solution of the utility model, a current transformer is fixedly installed in the first shell, and the front surface of the current transformer is fixedly connected to the first conductive block and the second conductive block. The current transformer can monitor the change of current, and once the current exceeds the set value, an alarm will be triggered.

[0008] As a further solution of the present invention, insulating sleeves are fixedly installed at the positions corresponding to the two groups of conductive sheets on the front surface of the second shell, and the two groups of conductive sheets are movably inserted in the two groups of insulating sleeves respectively, and the insulating sleeves can improve the protection of the conductive sheets.

[0009] As a further solution of the present invention, the reset mechanism includes an adjusting rod, which is movably inserted in the upper end of the first shell, a slot is opened on one side of the adjusting rod, and two groups of slots are arranged in upper and lower positions, the upper and lower ends of the adjusting rod are respectively fixedly connected with an adjusting block and an insulating plate, a limit sleeve is fixedly provided on the surface of the adjusting rod, a first spring is wrapped on the surface of the adjusting rod, and the two ends of the first spring are respectively connected with the limit sleeve and the inner wall of the first shell, and the reset mechanism can reset the bimetallic strip by moving the insulating plate downward.

[0010] As a further solution of the present invention, the locking mechanism includes a movable plate, which is arranged at the upper end of the first shell, and a slider is fixedly installed on the lower surface of the movable plate, and the slider is arranged to be a trapezoidal structure. A sliding groove for the movement of the slider is opened on the upper surface of the first shell, and the slider cooperates with the sliding groove to maintain the stability of the movement of the movable plate.

[0011] As a further solution of the utility model, a fixing frame is provided at the upper end of the movable plate, and the fixing frame is fixedly mounted on the upper surface of the first shell, the movable plate is movably inserted in the fixing frame, one side of the movable plate is fixedly connected with an insertion rod, and the insertion rod is movably inserted in a slot on the adjusting rod, and the insertion rod can lock the adjusting rod.

[0012] As a further solution of the utility model, a fixed plate is provided on the other side of the movable plate, and the fixed plate is fixedly installed on the upper surface of the first shell, the movable plate is connected to the fixed plate through a second spring, a movable rod is movably inserted in the fixed plate, and the movable rod is arranged as an L-shaped structure, and the movable rod is fixedly connected to the movable plate by the second spring to maintain the stability of the inserted rod.

[0013] In summary, the utility model includes at least one of the following beneficial technical effects:

[0014] First, the utility model records a manual reset overload current protector, which records that by providing a plug block and a bolt, the first shell and the second shell are easily connected and disassembled, which provides convenient conditions for subsequent maintenance of internal components and saves maintenance time and cost.

[0015] Second, the utility model records a manual reset overload current protector, which records that by providing a reset mechanism, the first spring can be stretched by pressing the adjustment block, so that the insulating plate and the bimetallic strip are in conflict, which has the effect of quickly resetting the bimetallic strip, effectively reducing the downtime caused by current overload and improving the continuous operation capability of the equipment. The operation process is simple and intuitive, and no additional tools are required. Maintenance personnel can quickly handle faults, reducing the complexity and difficulty of the maintenance process.

[0016] Third, the utility model records a manual reset overload current protector, which records that by providing a locking mechanism, the plug rod can be inserted into the slot on the adjusting rod during resetting to maintain the stability of the adjusting rod, ensure that the insulating plate remains stable during operation, reduce the possibility of accidental displacement or loosening, improve the stability and reliability of the device, reduce the risk of accidents, improve operational safety, and protect the safety of equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the manual reset overload current protector of the utility model;

[0019] Figure 2 This is a schematic diagram of the component breakdown structure of the manual reset overload current protector of the utility model;

[0020] Figure 3 This is a schematic diagram of the component breakdown structure of the manual reset overload current protector of the utility model;

[0021] Figure 4 This is a schematic diagram of the reset mechanism structure of the manual reset overload current protector of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the exploded structure of the locking mechanism of the manual reset overload current protector.

[0023] Figure numerals: 1. first shell; 2. second shell; 3. mounting sleeve; 4. plug-in block; 5. current transformer; 6. first conductive block; 7. second conductive block; 8. conductive port; 9. bimetallic strip; 10. fixed block; 11. conductive sheet; 12. insulating sleeve; 13. reset mechanism; 131. adjusting rod; 132. adjusting block; 133. insulating plate; 134. limiting sleeve; 135. first spring; 14. locking mechanism; 141. movable plate; 142. slider; 143. fixing frame; 144. plug-in rod; 145. fixed plate; 146. second spring; 147. movable rod. DETAILED DESCRIPTION

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The manual reset overload current protector comprises a first housing 1 and a second housing 2, both sides of the first housing 1 are fixedly connected with a mounting sleeve 3, a first conductive block 6 and a second conductive block 7 are arranged in the first housing 1 and the second housing 2, and the upper ends of the first conductive block 6 and the second conductive block 7 are both provided with conductive ports 8, and the upper ends of the two groups of conductive ports 8 are both in contact with bimetallic strips 9, the bimetallic strips 9 at the upper end of the first conductive block 6 are fixed by a fixing block 10, the front surfaces of the first conductive block 6 and the second conductive block 7 are both fixedly connected with conductive strips 11, the upper end of the second conductive block 7 is provided with a reset mechanism 13, and one side of the reset mechanism 13 is provided with a locking mechanism 14.

[0025] The first housing 1 and the second housing 2 are both fixedly installed with an insert block 4 on one side close to each other. The first housing 1 and the second housing 2 are both provided with a slot matched with the insert block 4. Bolts are provided on the insert block 4. The first housing 1 and the second housing 2 are both provided with screw holes matched with the bolts. The arrangement of the insert block 4 and the bolts allows the first housing 1 and the second housing 2 to be easily connected to each other, reducing the complexity and time cost of the installation process. The fixed installation of the insert block 4 increases the connection strength between the first housing 1 and the second housing 2, and improves the stability and reliability of the entire device.

[0026] A current transformer 5 is fixedly installed in the first housing 1, and the front surface of the current transformer 5 is fixedly connected to the first conductive block 6 and the second conductive block 7. The internal installation of the current transformer 5 makes the connection with the first conductive block 6 and the second conductive block 7 tighter, which helps to optimize the circuit transmission efficiency and stability;

[0027] The front surface of the second housing 2 is fixedly mounted with insulating sleeves 12 at positions corresponding to the two groups of conductive sheets 11. The two groups of conductive sheets 11 are movably inserted in the two groups of insulating sleeves 12. The setting of the insulating sleeves 12 provides additional protection for the conductive sheets 11, reduces accidental contact between the conductive sheets 11 and the external environment or other components, and thus reduces potential failure risks;

[0028] The reset mechanism 13 includes an adjusting rod 131, which is movably inserted at the upper end of the first housing 1. A slot is provided on one side of the adjusting rod 131, and two groups of slots are provided at upper and lower positions. The upper and lower ends of the adjusting rod 131 are respectively fixedly connected with an adjusting block 132 and an insulating plate 133. A limit sleeve 134 is fixedly sleeved on the surface of the adjusting rod 131. A first spring 135 is wrapped on the surface of the adjusting rod 131, and the two ends of the first spring 135 are respectively connected with the limit sleeve 134 and the inner wall of the first housing 1. The setting of the reset mechanism 13 enables the manual reset overload current protector to be reset quickly and effectively, reduces downtime, and improves the availability and production efficiency of the equipment. The combined design of the adjusting rod 131, the limit sleeve 134 and the first spring 135 enhances the stability of the reset mechanism 13 and ensures the accuracy and reliability of the reset process.

[0029] The locking mechanism 14 includes a movable plate 141, which is arranged at the upper end of the first housing 1, a slider 142 is fixedly installed on the lower surface of the movable plate 141, and the slider 142 is arranged in a trapezoidal structure, a slide groove for the slider 142 to move is provided on the upper surface of the first housing 1, a fixing frame 143 is arranged on the upper end of the movable plate 141, and the fixing frame 143 is fixedly installed on the upper surface of the first housing 1, the movable plate 141 is movably inserted in the fixing frame 143, and a plug rod 144 is fixedly connected to one side of the movable plate 141, and the plug rod 144 is movably inserted in the plug on the adjusting rod 131. In the groove, a fixed plate 145 is arranged on the other side of the movable plate 141, and the fixed plate 145 is fixedly installed on the upper surface of the first shell 1, the movable plate 141 is connected to the fixed plate 145 by a second spring 146, a movable rod 147 is movably inserted in the fixed plate 145, and the movable rod 147 is arranged to be an L-shaped structure, and the movable rod 147 is fixedly connected to the movable plate 141, and the setting of the locking mechanism 14 enables the adjusting rod 131 to remain stable when resetting, avoids accidental touch, reduces accidental displacement or loosening during operation, and thus improves the reliability and safety of the device.

[0030] The working principle of the manual reset overload current protector provided by the utility model is as follows:

[0031] Step 1: When the current exceeds the set value, the current transformer 5 triggers an alarm and the bimetallic strip 9 tilts upward;

[0032] Step 2: Press the adjustment block 132 to drive the limiting sleeve 134 to stretch the first spring 135, so that the insulating plate 133 presses the bimetallic strip 9 to reset the bimetallic strip 9;

[0033] The third step: push the movable rod 147 to insert the insertion rod 144 into the slot on the adjustment rod 131 to lock the adjustment rod 131. The above is the entire working principle of the utility model.

[0034] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A manually reset overload current protector, comprising a first housing (1) and a second housing (2), characterized in that: Both sides of the first housing (1) are fixedly connected with mounting sleeves (3); a first conductive block (6) and a second conductive block (7) are arranged in the first housing (1) and the second housing (2); the upper ends of the first conductive block (6) and the second conductive block (7) are both provided with conductive ports (8); the upper ends of the two sets of conductive ports (8) are both in contact with bimetallic strips (9); the bimetallic strip (9) at the upper end of the first conductive block (6) is fixed by a fixing block (10); the front surfaces of the first conductive block (6) and the second conductive block (7) are both fixedly connected with conductive strips (11); the upper end of the second conductive block (7) is provided with a reset mechanism (13); and a locking mechanism (14) is provided on one side of the reset mechanism (13).

2. The manual reset overload current protector according to claim 1, characterized in that: An insert block (4) is fixedly mounted on one side of the first shell (1) and the second shell (2) that are close to each other; a slot that matches the insert block (4) is provided on the first shell (1) and the second shell (2); a bolt is provided on the insert block (4); and a screw hole that matches the bolt is provided on the first shell (1) and the second shell (2).

3. The manual reset overload current protector according to claim 1, characterized in that: A current transformer (5) is fixedly installed in the first housing (1), and a front surface of the current transformer (5) is fixedly connected to the first conductive block (6) and the second conductive block (7).

4. The manual reset overload current protector according to claim 1, characterized in that: Insulating sleeves (12) are fixedly mounted on the front surface of the second housing (2) at positions corresponding to the two groups of conductive sheets (11), and the two groups of conductive sheets (11) are movably inserted into the two groups of insulating sleeves (12) respectively.

5. The manual reset overload current protector according to claim 1, characterized in that: The reset mechanism (13) comprises an adjusting rod (131), the adjusting rod (131) being movably inserted into the upper end of the first housing (1), a slot being provided on one side of the adjusting rod (131), and two groups of slots being provided at upper and lower positions, the upper and lower ends of the adjusting rod (131) being respectively fixedly connected to an adjusting block (132) and an insulating plate (133), a limiting sleeve (134) being fixedly sleeved on the surface of the adjusting rod (131), a first spring (135) being wrapped on the surface of the adjusting rod (131), and the two ends of the first spring (135) being respectively connected to the limiting sleeve (134) and the inner wall of the first housing (1).

6. The manual reset overload current protector according to claim 1, characterized in that: The locking mechanism (14) comprises a movable plate (141), the movable plate (141) being arranged at the upper end of the first housing (1), a slider (142) being fixedly mounted on the lower surface of the movable plate (141), and the slider (142) being arranged in a trapezoidal structure, and a sliding groove for the slider (142) to move is provided on the upper surface of the first housing (1).

7. The manual reset overload current protector according to claim 6, characterized in that: A fixing frame (143) is provided at the upper end of the movable plate (141), and the fixing frame (143) is fixedly mounted on the upper surface of the first housing (1); the movable plate (141) is movably inserted into the fixing frame (143); an insertion rod (144) is fixedly connected to one side of the movable plate (141), and the insertion rod (144) is movably inserted into a slot on the adjustment rod (131).

8. The manual reset overload current protector according to claim 7, characterized in that: A fixed plate (145) is provided on the other side of the movable plate (141), and the fixed plate (145) is fixedly mounted on the upper surface of the first housing (1); the movable plate (141) is connected to the fixed plate (145) via a second spring (146); a movable rod (147) is movably inserted into the fixed plate (145), and the movable rod (147) is provided in an L-shaped structure, and the movable rod (147) is fixedly connected to the movable plate (141).

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