CN109659778B

CN109659778B - Overload-proof timing opening plug

Info

Publication number: CN109659778B
Application number: CN201811522989.7A
Authority: CN
Inventors: 郝诗敏
Original assignee: 嘉兴市中法天线实业有限公司
Current assignee: Jiaxing Zhongfa Antenna Industries Co ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2020-07-24
Anticipated expiration: 2038-12-13
Also published as: CN109659778A

Abstract

The invention discloses an overload-proof timing opening plug which comprises a shell, wherein two plug pins penetrate through the side wall of the shell, two cylinders with openings at the lower ends are fixedly connected to the inner wall of the shell, rubber bags are hermetically connected to the openings of the cylinders, mercury is arranged in the rubber bags, one ends of the two plug pins, which are positioned in the shell, penetrate through the side wall of the cylinders and extend into the cylinders, binding posts penetrate through the two sides of the shell, one ends of the binding posts, which are positioned in the shell, penetrate through the side wall of the cylinders and extend into the cylinders, pull rods penetrate through the lower ends of the shell, one ends of the pull rods, which are positioned in the shell, are fixedly connected with a pressing plate, the pressing plate is connected to the inner wall of the shell in a sliding mode through. The invention has simple structure and can be made into very small volume; the device is realized by using a pure mechanical structure, has longer service life and is safer and more reliable.

Description

Overload-proof timing opening plug

Technical Field

The invention relates to the technical field of plugs, in particular to an overload-preventing timed-opening plug.

Background

The plug belongs to the half that the circuit connector is not fixed, and is used in cooperation with a socket, the plug is usually provided with an insertion needle, and the socket is provided with a jack. The conventional plug has only a simple insertion function.

However, when an electrical appliance is used, the electrical appliance is often required to have a function of starting in a delayed manner or a function of starting at a fixed time in a set time, and the functions are usually directly designed on the electrical appliance, so that related functional elements are required to be designed and installed on a plurality of electrical appliances, the manufacturing cost is high, and the utilization rate is often low.

In addition, when people experiment some dangerous articles or electric appliances, people are required to be away from a certain distance to be connected, and the function is difficult to realize by the traditional plug.

In addition, the traditional timing module is usually completed by using an electronic structure, if power failure occurs in the middle of the timing process, the whole timing process is always stopped completely, the mechanical timing structure is complex and is difficult to manufacture on a socket, and meanwhile, the existing plug does not have a current overload protection function and is easy to damage a circuit when current is overloaded.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an overload-preventing timing opening plug which is simple in structure and can be manufactured into a small size; the device is realized by using a pure mechanical structure, has longer service life and is safer and more reliable.

In order to achieve the purpose, the invention adopts the following technical scheme:

an overload-proof timing opening plug comprises a shell, wherein two pins are arranged on the side wall of the shell in a penetrating manner, two cylinders with openings at the lower ends are fixedly connected to the inner wall of the shell, a rubber bag is hermetically connected to the opening of each cylinder, mercury is arranged in the rubber bag, one ends of the two pins in the shell penetrate through the side wall of each cylinder and extend into each cylinder, binding posts are arranged on the two sides of the shell in a penetrating manner, one ends of the binding posts in the shell penetrate through the side wall of each cylinder and extend into each cylinder, a pull rod is arranged at the lower end of the shell in a penetrating manner, one end of the pull rod in the shell is fixedly connected with a pressing plate, the pressing plate is connected to the inner wall of the shell in a sliding manner through damping, a fixed block is fixedly connected to the inner top of the shell, the pressing plate is elastically connected, the part of participating in to be located the casing on the cover be equipped with the heat-conducting plate, two one side that the heat-conducting plate is relative all with the lateral wall fixed connection of fixed block, set up the device chamber in the lateral wall of fixed block, two the valve rod of valve runs through the fixed block respectively about the lateral wall and extends to the device intracavity, and fixedly connected with gear between the valve rod of two valves, the sealed sliding connection of device intracavity has the sliding plug, the lower extreme fixedly connected with of sliding plug and the rack of gear engaged with, the lateral wall of heat-conducting plate has been seted up and has been slided the chamber, the sealed sliding connection of sliding chamber has the piston, the sliding chamber passes through air guide chamber and the upper end lateral wall intercommunication in device chamber, one side that the air guide.

Preferably, the heat conducting plate is made of copper material with good heat conduction.

Preferably, the fixing block is made of an insulating material.

Preferably, when the pressure plate moves to the upper limit under the action of the spring, the mercury fills the entire cylinder, and the circuit between the pins and the binding posts is conducted.

The invention has the following beneficial effects:

1. the pressing plate is pulled to the lower limit end by pulling the pull rod, at the moment, mercury in the cylinder flows back into the rubber bag, the wiring terminal and the pin are disconnected, the pressing plate moves upwards under the action of the spring along with the lapse of time, when the pressing plate moves to abut against the rubber bag, the pressing plate extrudes the rubber bag to deform under the pulling force of the spring, the mercury in the rubber bag is extruded into the cylinder, and then the circuit between the pin and the wiring terminal is connected, so that the time delay connection of the circuit is realized, and the time delay connection of the plug is different through the difference of the downward moving length of the pull rod, so that the plug can be opened at regular time;

2. when the circuit is short-circuited or overloaded, the temperature of the plug pins rises sharply, the expansion liquid expands to push the piston to move at the moment, the piston moves to push the sliding plug to move, the rack drives the gear to rotate, the gear rotates to drive the valve rod on the valve to rotate, the valve is closed, the mercury in the cylinder is blocked and disconnected, the circuit is cut off, and the safety of an electric appliance is protected.

Drawings

Fig. 1 is a schematic structural diagram of an overload prevention timed-opening plug according to the present invention;

fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

In the figure: 1 shell, 2 mercury, 3 binding posts, 4 pins, 5 pistons, 6 springs, 7 air guide cavities, 8 expansion liquid, 9 heat conduction plates, 10 valves, 11 cylinders, 12 rubber bags, 13 pressing plates, 14 device cavities, 15 sliding plugs, 16 gears, 17 racks, 18 fixed blocks and 19 pull rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, an overload-proof timing-opening plug comprises a housing 1, two pins 4 are arranged on the side wall of the housing 1 in a penetrating manner, two cylinders 11 with openings at the lower ends are fixedly connected to the inner wall of the housing 1, a rubber bag 12 is hermetically connected to the openings of the cylinders 11, mercury 2 is arranged in the rubber bag 12, one ends of the two pins 4, which are positioned in the housing 1, penetrate the side wall of the cylinder 11 and extend into the cylinder 11, terminals 3 are arranged on both sides of the housing 1 in a penetrating manner, one ends of the terminals 3, which are positioned in the housing 1, penetrate the side wall of the cylinder 11 and extend into the cylinder 11, air holes only allowing air to pass through are formed in the upper end of the cylinder 11, a pull rod 19 is arranged at the lower end of the housing 1 in a penetrating manner, a pressing plate 13 is fixedly connected to one end of the pull rod 19, which is positioned in the, the circuit between the pin 4 and the post 3 is conducted.

The clamp plate 13 passes through damping sliding connection on the inner wall of casing 1, the interior top fixedly connected with fixed block 18 of casing 1, fixed block 18 adopts insulating material to make, clamp plate 13 passes through spring 6 elastic connection at the lower extreme of fixed block 18, valve 10 is installed for the part of participating in between 4 and the terminal 3 to drum 11, it is equipped with heat-conducting plate 9 to participate in the part that 4 is located casing 1 on the cover, heat-conducting plate 9 adopts the good copper product of heat conduction to make.

The opposite sides of the two heat conduction plates 9 are fixedly connected with the side wall of a fixed block 18, a device cavity 14 is formed in the side wall of the fixed block 18, valve rods of the two valves 10 penetrate through the left side wall and the right side wall of the fixed block 18 respectively and extend into the device cavity 14, a gear 16 is fixedly connected between the valve rods of the two valves 10, a sliding plug 15 is connected in the device cavity 14 in a sealing and sliding mode, a rack 17 meshed with the gear 16 is fixedly connected to the lower end of the sliding plug 15, a sliding cavity is formed in the side wall of the heat conduction plate 9 and connected with a piston 5 in the sliding cavity in a sealing and sliding mode, when the sliding plug 15 moves downwards, gas at the lower portion of the sliding plug 15 of the device cavity 14 can be discharged through a gap between the connecting portions of the valve rods of the valves 10 and the fixed block 18, the sliding cavity is communicated with the side wall of the upper end portion of.

In the invention, when the plug is used, the pull rod 19 is pulled to pull the press plate 13 to the lower limit end, at the moment, mercury 2 in the cylinder 11 flows back into the rubber bag 12, at the moment, the connection between the terminal 3 and the pin 4 is disconnected, the press plate 13 moves upwards under the action of the spring 6 along with the time, when the press plate 13 moves to abut against the rubber bag 12, the press plate 13 extrudes the rubber bag 12 to deform under the tension of the spring 6, mercury in the rubber bag 12 is extruded into the cylinder 11, and then a circuit between the pin 4 and the terminal 3 is connected, so that the delayed connection of a circuit is realized, and the plug can be opened at regular time through different delayed connection time by different downward moving lengths of the pull rod 19.

When a circuit is short-circuited or overloaded, the temperature of the pin 4 rises sharply, at the moment, the expansion liquid 8 expands to push the piston 5 to move, the piston 5 moves to push the sliding plug 15 to move, the rack 17 drives the gear 16 to rotate, the gear 16 rotates to drive the valve rod on the valve 10 to rotate, the valve 10 is closed, the mercury 2 in the cylinder 11 is blocked and disconnected, the circuit is cut off, and the safety of an electric appliance is protected.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The overload-proof timing opening plug comprises a shell (1) and is characterized in that two plug pins (4) are arranged on the inner top wall of the shell (1), two lower ends of the inner wall of the shell (1) are fixedly connected with a cylinder (11) with an opening, a rubber bag (12) is hermetically connected with the opening of the cylinder (11), mercury (2) is arranged in the rubber bag (12), one end of each plug pin (4) located in the shell (1) penetrates through the side wall of the cylinder (11) and extends into the cylinder (11), binding posts (3) are arranged on two sides of the shell (1) in a penetrating mode, one end of each binding post (3) located in the shell (1) penetrates through the side wall of the cylinder (11) and extends into the cylinder (11), a pull rod (19) is arranged at the lower end of the shell (1) in a penetrating mode, and one end of each pull rod (19) located in the shell (1) is fixedly connected with a pressing plate (13, the clamp plate (13) is connected on the inner wall of the shell (1) through damping sliding, the inner top fixedly connected with fixed block (18) of the shell (1), the clamp plate (13) is connected at the lower end of the fixed block (18) through a spring (6) in an elastic manner, a valve (10) is installed on the cylinder (11) for the part between the pin (4) and the binding post (3), the part of the pin (4) in the shell (1) is sleeved with a heat conducting plate (9), two heat conducting plates (9) are opposite to each other, one side of the heat conducting plate (9) is fixedly connected with the side wall of the fixed block (18), a device cavity (14) is arranged in the side wall of the fixed block (18), two valve rods of the valve (10) respectively penetrate through the left side wall and the right side wall of the fixed block (18) and extend to the device cavity (14), and a gear (, the device is characterized in that a sliding plug (15) is connected in the device cavity (14) in a sealing and sliding mode, a rack (17) meshed with a gear (16) is fixedly connected to the lower end of the sliding plug (15), a sliding cavity is formed in the side wall of the heat conducting plate (9), a piston (5) is connected in the sliding cavity in a sealing and sliding mode, the sliding cavity is communicated with the side wall of the upper end portion of the device cavity (14) through a gas conducting cavity (7), expansion liquid (8) is arranged on one side, away from the gas conducting cavity (7), of the sliding cavity, and when the pressing plate (13) moves to the upper limit end under the action of the spring (6), the whole cylinder (11) is filled with mercury (2), and a circuit between the plug pin (4) and the binding post (3.

2. An overload-proof timed opening plug as claimed in claim 1, characterised in that the heat-conducting plate (9) is made of a copper material which conducts heat well.

3. An overload-proof, time-opening plug as claimed in claim 1, characterised in that the holding block (18) is made of an insulating material.