Circuit board with power-off protection effect

Abstract

The utility model discloses a circuit board with a power-off protection effect. Comprising a circuit board body, a supporting shell arranged on the lower surface of the circuit board body, a temperature sensor fixedly installed on the upper surface of the circuit board body, a negative electrode connecting end fixedly connected to one side of the bottom of the circuit board body, and a positive electrode connecting end fixedly connected to one side of the top of the supporting shell. The fixing assembly is arranged on the upper surface of the supporting shell, the protection mechanism is arranged on the top of the supporting shell, and the fixing assembly comprises a fixing rod, an external thread, a threaded sleeve and a spring. Under the cooperative use of a temperature sensor and a micro cylinder, a rotating gear and a rotating shaft are driven to rotate, and under the rotating action of the gear, a connecting rod and an insulating plate are driven to move upwards, so that the positive and negative contact points of a circuit board body are quickly disconnected, the automation of power-off protection is realized, the complexity of manual operation is reduced, and the working efficiency is improved. And the use safety of the circuit board body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit boards, and in particular relates to a circuit board with power-off protection effect. Background Art

[0002] Circuit board can be called printed circuit board or printed circuit board. It is an important electronic component, a support for electronic components and a carrier for electrical connection of electronic components. It is mainly composed of pads, wires, fillings, components and connectors, etc. It plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] In actual applications, circuit boards may be damaged or even cause safety accidents such as fires due to overloads, short circuits, etc. At present, most circuit board power-off protection devices on the market are implemented with electronic components. Although they play a protective role to a certain extent, they have problems such as slow response speed and insufficient reliability. In addition, some devices cannot automatically reset after power failure and require manual intervention, which increases the difficulty of use. Utility Model Content

[0004] The utility model aims to solve the problems of slow response speed and insufficient reliability of the existing circuit boards with power-off protection effect in the prior art, and proposes the following technical solutions:

[0005] A circuit board with power-off protection effect, comprising a circuit board body, a support shell arranged on the lower surface of the circuit board body, a temperature sensor fixedly installed on the upper surface of the circuit board body, a negative electrode connection terminal fixedly connected to one side of the bottom of the circuit board body, a positive electrode connection terminal fixedly connected to one side of the top of the support shell, a fixing component arranged on the upper surface of the support shell, and a protection mechanism arranged on the top of the support shell;

[0006] The fixing assembly includes a fixing rod, an external thread, a screw sleeve, and a spring, wherein the external thread is provided at the top end of the fixing rod, the screw sleeve is threadedly connected to the outside of the external thread, and the spring is fixedly connected to the lower surface of the screw sleeve and abuts against the upper surface of the circuit board body;

[0007] The protection mechanism includes a mounting seat, a rotating shaft, a connecting rod, a movable rod, and an insulating plate. The rotating shaft is rotatably connected to the inside of the mounting seat, the connecting rod is fixedly connected to the outside of the rotating shaft, the movable rod is hinged to one end of the connecting rod away from the rotating shaft, and the insulating plate is hinged to the top end of the movable rod and abuts against the lower surface of the circuit board body.

[0008] With the coordinated use of the temperature sensor and the micro cylinder, the rotating gear and the rotating shaft are driven to rotate. Under the rotation of the gear, the connecting rod and the insulating plate are driven to move upward, thereby realizing the rapid disconnection of the positive and negative contact points of the circuit board body, realizing the automation of power-off protection, reducing the complexity of manual operation, and improving the safety of the use of the circuit board body.

[0009] As a preferred embodiment of the above technical solution, the number of the fixing rod, the external thread, the screw sleeve and the spring is four, the four fixing rods are distributed in a rectangular shape on the upper surface of the support shell, four fixing holes are opened inside the circuit board body, and the circuit board body is slidably connected to the outside of the fixing rod through the fixing holes.

[0010] Under the limitation of the fixing rod, the circuit board body is auxiliary fixed.

[0011] As a preferred embodiment of the above technical solution, the number of the mounting seats, connecting rods and movable rods is two each, the two mounting seats are symmetrically distributed on the upper surface of the support shell, the rotating shaft is rotatably connected to the inside of the two mounting seats and extends to the outside of the mounting seat on the right side, and the two connecting rods and the two movable rods are symmetrically distributed on the lower surface of the insulating plate.

[0012] Under the rotation of the rotating shaft, the connecting rod and the insulating plate are driven to move upward.

[0013] As a preferred embodiment of the above technical solution, the protection mechanism also includes a fixed seat, a micro cylinder, a moving block, a gear, and a gear plate. The fixed seat is fixedly connected to one side of the mounting seat on the right side, the micro cylinder is fixedly installed inside the fixed seat, and the moving block is fixedly connected to the output end of the micro cylinder.

[0014] Under the movement of the tooth plate, the meshing drives the gear to rotate, thereby adjusting the rotation axis and driving the connecting rod and the insulating plate to move upward.

[0015] As a preferred embodiment of the above technical solution, the gear is fixedly connected to an end of the rotating shaft away from the mounting seat, and the gear is meshingly connected to the toothed plate.

[0016] Under the rotation of the gear, the positive and negative contact points of the circuit board body are quickly disconnected, realizing the automation of power-off protection.

[0017] As a preferred embodiment of the above technical solution, the movable block is fixedly connected to a side of the right mounting seat close to a guide shaft extending into the interior thereof, and a sliding groove matching the guide shaft is provided inside the right mounting seat, and the guide shaft and the sliding groove are slidably connected.

[0018] Under the limiting effect of the guide shaft and the slide groove, the stability of the tooth plate moving for transmission is improved.

[0019] The beneficial effects of the utility model are:

[0020] (1) The temperature sensor and the micro cylinder are used together to drive the rotating gear and the rotating shaft to rotate. Under the rotation of the gear, the connecting rod and the insulating plate are driven to move upward, so as to quickly disconnect the positive and negative contact points of the circuit board body, realize the automation of power-off protection, reduce the complexity of manual operation, and improve the safety of the circuit board body;

[0021] (2) Under the fixing action of the screw sleeve and the spring, when the temperature sensor triggers the power-off switch, the spring will be in a compressed state; when the fault is eliminated, the spring can drive the circuit board body back to its original position under the elastic force, and re-contact the negative connection terminal with the positive connection terminal, so that the circuit board body can automatically reset and restore power supply without human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 What is shown is the structural stereogram of the whole device;

[0023] Figure 2 What is shown is the structural explosion diagram of the whole device;

[0024] Figure 3 What is shown is a structural stereogram of the fixing assembly;

[0025] Figure 4 What is shown is a structural stereogram of the protection mechanism;

[0026] Figure 5 Shown is a partial structural perspective view of the protection mechanism.

[0027] In the figure: 1. circuit board body; 2. support shell; 3. temperature sensor; 4. negative electrode connection terminal; 5. positive electrode connection terminal; 6. fixing component; 61. fixing rod; 62. external thread; 63. screw sleeve; 64. spring; 7. protection mechanism; 71. mounting seat; 72. rotating shaft; 73. connecting rod; 74. moving rod; 75. insulating plate; 76. fixing seat; 77. micro cylinder; 78. moving block; 79. gear; 710. tooth plate; 711. guide shaft. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0029] Example

[0030] Figures 1 to 5The structure diagram of a specific embodiment of the utility model is shown. A circuit board with power-off protection effect includes a circuit board body 1, a support shell 2 arranged on the lower surface of the circuit board body 1, a temperature sensor 3 fixedly installed on the upper surface of the circuit board body 1, a negative electrode connection terminal 4 fixedly connected to one side of the bottom of the circuit board body 1, a positive electrode connection terminal 5 fixedly connected to one side of the top of the support shell 2, a fixing component 6 arranged on the upper surface of the support shell 2, and a protection mechanism 7 arranged on the top of the support shell 2, wherein the fixing component 6 includes a fixing rod 61, an external thread 62, a screw sleeve 63, and a spring 64, wherein the external thread 62 is opened at the top of the fixing rod 61, the screw sleeve 63 is threadedly connected to the outside of the external thread 62, and the spring 64 is fixedly connected to the lower surface of the screw sleeve 63 and abuts against the upper surface of the circuit board body 1.

[0031] Under the fixing action of the screw sleeve 63 and the spring 64, when the temperature sensor 3 triggers the power-off switch, the spring 64 will be in a compressed state; when the fault is eliminated, the spring 64 can drive the circuit board body 1 back to the initial position under the elastic force, and re-contact the negative electrode connection terminal 4 with the positive electrode connection terminal 5, so that the circuit board body 1 can automatically reset and restore power supply without manual intervention.

[0032] Among them, the number of fixing rods 61, external threads 62, screw sleeves 63 and springs 64 are four, the four fixing rods 61 are distributed in a rectangular shape on the upper surface of the support shell 2, and four fixing holes are opened inside the circuit board body 1. The circuit board body 1 is slidably connected to the outside of the fixing rods 61 through the fixing holes.

[0033] Under the limitation of the fixing rod 61 , the circuit board body 1 is auxiliary fixed, and under the connection between the screw sleeve 63 and the external thread 62 , the connection between the circuit board body 1 and the supporting shell 2 is more stable and not easy to loosen.

[0034] Figure 1 , Figure 4 and Figure 5 In the figure, the protection mechanism 7 includes a mounting seat 71, a rotating shaft 72, a connecting rod 73, a moving rod 74, and an insulating plate 75. The rotating shaft 72 is rotatably connected to the inside of the mounting seat 71, the connecting rod 73 is fixedly connected to the outside of the rotating shaft 72, the moving rod 74 is hinged to one end of the connecting rod 73 away from the rotating shaft 72, and the insulating plate 75 is hinged to the top of the moving rod 74 and abuts against the lower surface of the circuit board body 1.

[0035] When the circuit board body 1 reaches a certain temperature, the temperature sensor 3 and the PLC controller are used in conjunction to open and close the protection mechanism 7, so that the circuit board body 1 can quickly cut off the power supply when an abnormal situation such as overload or short circuit occurs, thereby protecting the circuit board body 1 from damage. The protection mechanism 7 and the fixing component 6 can be used in conjunction to automatically reset after the fault is eliminated.

[0036] Among them, the number of mounting seats 71, connecting rods 73 and moving rods 74 are all two, the two mounting seats 71 are symmetrically distributed on the upper surface of the support shell 2, the rotating shaft 72 is rotatably connected to the inside of the two mounting seats 71 and extends to the outside of the right mounting seat 71, and the two connecting rods 73 and the two moving rods 74 are symmetrically distributed on the lower surface of the insulating plate 75.

[0037] Under the rotation of the rotating shaft 72 , the connecting rod 73 and the insulating plate 75 are driven to move upward, so that the positive and negative contact points of the circuit board body 1 are quickly disconnected.

[0038] Specifically, the protection mechanism 7 further includes a fixed seat 76, a micro cylinder 77, a moving block 78, a gear 79, and a toothed plate 710. The fixed seat 76 is fixedly connected to one side of the right mounting seat 71, the micro cylinder 77 is fixedly installed inside the fixed seat 76, and the moving block 78 is fixedly connected to the output end of the micro cylinder 77. The gear 79 is fixedly connected to one end of the rotating shaft 72 away from the mounting seat 71, and the gear 79 is meshedly connected to the toothed plate 710.

[0039] The temperature of the circuit board body 1 is sensed by the temperature sensor 3, so that the PLC controller controls the telescopic movement of the micro cylinder 77, so that its output end drives the moving block 78 and the tooth plate 710 to move, and the tooth plate 710 moves and engages to drive the gear 79 to rotate, thereby rotating and adjusting the rotating shaft 72, driving the connecting rod 73 and the insulating plate 75 to move upward, realizing the rapid disconnection of the positive and negative contact points of the circuit board body 1, realizing the automation of power-off protection, reducing the complexity of manual operation, and improving the safety of the use of the circuit board body 1.

[0040] It should be noted that a guide shaft 711 extending into the interior of the movable block 78 is fixedly connected to one side of the movable block 78 close to the right mounting seat 71, and a slide groove matching the guide shaft 711 is provided inside the right mounting seat 71, and the guide shaft 711 and the slide groove are slidably connected.

[0041] Under the limiting effect of the guide shaft 711 and the slide groove, the stability of the tooth plate 710 moving for transmission is improved.

[0042] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A circuit board with a power-off protection effect, comprising a circuit board body (1), a support shell (2) arranged on the lower surface of the circuit board body (1), a temperature sensor (3) fixedly mounted on the upper surface of the circuit board body (1), a negative electrode connection terminal (4) fixedly connected to one side of the bottom of the circuit board body (1), a positive electrode connection terminal (5) fixedly connected to one side of the top of the support shell (2), a fixing component (6) arranged on the upper surface of the support shell (2), and a protection mechanism (7) arranged on the top of the support shell (2), characterized in that: The fixing assembly (6) comprises a fixing rod (61), an external thread (62), a screw sleeve (63), and a spring (64); the external thread (62) is formed at the top of the fixing rod (61); the screw sleeve (63) is threadedly connected to the outside of the external thread (62); and the spring (64) is fixedly connected to the lower surface of the screw sleeve (63) and abuts against the upper surface of the circuit board body (1); The protection mechanism (7) comprises a mounting seat (71), a rotating shaft (72), a connecting rod (73), a moving rod (74), and an insulating plate (75); the rotating shaft (72) is rotatably connected to the inside of the mounting seat (71); the connecting rod (73) is fixedly connected to the outside of the rotating shaft (72); the moving rod (74) is hinged to one end of the connecting rod (73) away from the rotating shaft (72); and the insulating plate (75) is hinged to the top end of the moving rod (74) and abuts against the lower surface of the circuit board body (1).

2. A circuit board with power-off protection effect according to claim 1, characterized in that: The number of the fixing rod (61), the external thread (62), the screw sleeve (63) and the spring (64) is four; the four fixing rods (61) are distributed in a rectangular shape on the upper surface of the support shell (2); four fixing holes are opened inside the circuit board body (1); the circuit board body (1) is slidably connected to the outside of the fixing rods (61) through the fixing holes.

3. A circuit board with power-off protection effect according to claim 1, characterized in that: The number of the mounting seats (71), the connecting rods (73) and the moving rods (74) are all two, the two mounting seats (71) are symmetrically distributed on the upper surface of the support shell (2), the rotating shaft (72) is rotatably connected to the inside of the two mounting seats (71) and extends to the outside of the right mounting seat (71), and the two connecting rods (73) and the two moving rods (74) are symmetrically distributed on the lower surface of the insulating plate (75).

4. A circuit board with power-off protection effect according to claim 1, characterized in that: The protection mechanism (7) further comprises a fixed seat (76), a micro cylinder (77), a moving block (78), a gear (79), and a toothed plate (710); the fixed seat (76) is fixedly connected to one side of the mounting seat (71) on the right side; the micro cylinder (77) is fixedly mounted inside the fixed seat (76); and the moving block (78) is fixedly connected to the output end of the micro cylinder (77).

5. A circuit board with power-off protection effect according to claim 4, characterized in that: The gear (79) is fixedly connected to an end of the rotating shaft (72) away from the mounting seat (71), and the gear (79) is meshingly connected to the toothed plate (710).

6. A circuit board with power-off protection effect according to claim 4, characterized in that: A guide shaft (711) extending into the interior of the movable block (78) is fixedly connected to a side of the movable block (78) close to the right mounting seat (71). A sliding groove matching the guide shaft (711) is provided inside the right mounting seat (71). The guide shaft (711) and the sliding groove are slidably connected.

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