JP3171193U - Surge protection power strip - Google Patents

Abstract

[PROBLEMS] To keep the outer dimensions and shape the same as those of conventional products, minimize the number of parts, and withstand severe abnormal high voltages such as repeated lightning strikes, and economically connect electrical equipment connected to the power supply. In addition, a new surge protection power tap that can safely protect against lightning surges and quickly restore and stabilize power supply after the surge disappears. [Solution] A plug outer body that is formed by arranging and forming a plurality of outlet branching blade receiving portions 3, 3, and 3 at appropriate positions is directly integrated with a plug 4 that can be connected to and disconnected from a household AC power outlet. A surge formed by connecting a surge protection device 5 including a surge absorber 6 and a varistor 7 between the branch blade receiving portions 3, 3, 3 and the insertion plug 4. This is a protective power tap 1. [Selection] Figure 1

Description

    This invention relates to lightning surge protection technology around wiring plug connectors, and technology that can protect electrical devices connected to wiring plug connectors from abnormally high voltages. Necessary for transport, storage, assembly, and installation, as well as the field of manufacturing and providing power connection devices with surge protection functions such as single taps, multi taps, and table taps that can be connected to and disconnected from power outlets. From the field of providing and selling equipment and appliances, the field of providing materials, machinery, and parts necessary for materials, such as wood, stone, various fibers, plastic, various metal materials, etc. The field of electronic components and control-related equipment that integrates them, the field of various measuring instruments, the field of power equipment that moves the equipment and instruments, Fields generally referred to as industrial machinery, such as the fields of electricity and oil, which are energy sources, as well as testing and researching these facilities and equipment, fields related to their display, sales, import and export, Generals, such as the results of their use, the equipment for making them, the fields related to the collection and transportation of garbage generated by the operation of equipment, the recycling field for efficiently reusing such garbage In addition, there are no technical fields that are not related to new fields that cannot be envisaged at this time.

(Points of interest)
With the rapid development of electronics technology, not only offices and factories, but also general homes, such as personal computers and communication devices, are mounted with high density, and electronic devices that operate at weak voltage are widely used. In recent years, lightning strikes that occur frequently in various locations due to prolonged summer seasons, called abnormal weather, and high temperatures and humidity, are directly struck or induced by high-voltage distribution lines. The low-voltage distribution line enters the trap after passing through, and the lightning surge induced by the nearby lightning strikes the low-voltage distribution line destroys the connected electrical equipment, for example, by entering into the home wiring, causing significant damage. Natural disasters that give rise to frequent occurrence are becoming more frequent.

(Conventional technology)
Reflecting this situation, proposals that can be used to overcome this situation are not unheard of.
For example, as typified by what is proposed in Patent Document 1 (1) below, between the first arrester provided between the plug and the outlet, and between the telephone connection terminal and the modular jack. A bypass line that bypasses the lightning surge voltage is provided between the second arresters installed in the circuit to protect the electrical equipment connected to the power supply wiring from damage caused by lightning strikes, and the communication equipment connected to the communication line is also protected from lightning strikes. The first input / output modular jack to be connected to the external communication line and the second input / output modular jack to be connected to the analog line of the line relay device, such as those that can be protected from damage, as seen in Patent Document 1 (2) And power outlets are connected to each other through arresters having a predetermined withstand voltage so that the line relay device can Such as those made as possible protected from di current is scattered.

However, in addition to the function of a power connection outlet for commercial power supply as shown in the former patent documents 1 (1) and 1 (2), a modular jack for communication line connection is also targeted for lightning surge protection. The lightning surge safety devices are effective for use in electronic devices that have communication functions such as personal computers and fax machines, but the number of parts increases because the communication line connection cable protects the cables. Therefore, it is unsuitable for power supply connection of electrical devices that do not have a communication function, and it is completely uneconomical when used for such devices. There was a fatal defect that it would end up.
(1) JP 2000-106255 A (2) JP 2001-339849 A

(Awareness of problems)
As described above, the power taps with various lightning surge protection functions that have been proposed in the past can be used not only for power connection but also for connection of communication lines, and have a large number of parts. For power supplies that do not have a conventional lightning surge protection function, not only do they become complicated and large in size, but become more expensive and more expensive, which puts a heavy economic burden on users. When replacing or installing with taps, it may not fit in the space where conventional products are stored, and there is a risk that peripheral furniture and electrical equipment must be moved. The problem remains that it includes the causes of slowing down the judgment until product selection and purchase. In addition, the surge absorber is discharged due to a surge, and the surge If the terminal voltage of the busher drops below the power circuit voltage, a so-called discharge continuation occurs that continues the discharge by the current supplied from the power circuit even after the surge disappears, preventing normal power recovery. As a person who has been engaged in the business of providing electronic devices to various users for many years, there are many PCs and electronic devices installed in offices and factories. In addition to companies, organizations, schools, and other facilities that must protect equipment from lightning strikes, there are multiple computers in the house or one person, multiple computers and their peripherals, and various electronic devices such as fax machines. Even in households that use devices, taps for power supplies that have a lightning surge protection function for each electronic device installed at a distance from each other The need to install the tap is so much that the economic burden becomes too great, and it becomes painful that it is necessary to develop and commercialize taps that are simpler and cheaper and can be used in many places as soon as possible. It came.

(Purpose of the idea)
Therefore, this device keeps the outer dimensions and shape to the same level as the conventional product, minimizes the number of parts, and withstands severe abnormal high voltage such as repeated lightning strikes, and is connected to the power supply. From the judgment that it is not possible to develop new surge protection power supply technology that can safely and safely protect lightning surges from lightning surges and quickly restore and stabilize the power supply after the surge disappears, As a result of starting and repeating trial and error over many years and many trial manufactures and experiments, we finally succeeded in realizing a surge protection power strip with a novel structure, and the following is shown in the drawing The configuration of the present invention will be described in detail along with an embodiment representative of the present invention.

(Structure of the device)
As will be clearly understood from the embodiments representing the present invention shown in the drawings, the surge protection power strip of the present invention basically comprises the following configuration.
That is, one or more of the AC power outlet branch receiving blade receiving portion is arranged in place, and is either directly integrated with the tap outer package or via a predetermined length cord, Insert a plug that can be connected / disconnected to a household AC power outlet, and connect a surge absorber and varistor in series between the branch blade receiving part and the plug in the tap exterior. This is a surge protection power tap having a configuration in which at least one surge protection device is connected in parallel.

    The surge protection power tap having this basic configuration, if the expression is changed, shows one or a plurality of AC power outlet branching blade receiving portions arranged and formed at appropriate locations, Either directly integrated or via a predetermined length cord, and provided with a plug that can be connected / detached to / from an AC power outlet for home use, in the tap outer package, the blade holder for branching At least one surge protection device in which a surge absorber and a varistor are connected in series between the plug portion and the insertion plug are connected in parallel, and the surge protection device surge absorber ensures high voltage absorption speed, The surge protection device varistor can prevent the discharge continuity phenomenon in which the circuit current flows while the AC power supply circuit is at a low voltage. The surge protection power strip having the structure which was made in the so that.

    According to the surge protection power strip of the present invention having the above-described configuration, unlike conventional ones, conventional power strips incorporating only a surge absorber from a unique configuration as described above. However, the discharge continuity after the extinction of the surge could not be blocked and the power circuit voltage could not be restored to the normal value, but the varistor connected in series with the surge protection device surge absorber The power supply voltage is stabilized to the normal value immediately after the surge disappears, and the electrical equipment connected to the power supply can be used safely without any problems. The effect can be demonstrated.

    In addition, the surge protection power strip has a simple circuit configuration that does not have other communication circuits, such as a modular jack for communication, and incorporates only a surge protection device in the power supply circuit. Responding to the needs of customers who want only functions, the economic burden can be greatly reduced and the tap outer package can be either a single tap or a multi-tap. Can be designed to have the same outer shape and dimensions as conventional products while avoiding unusual designs and size increases, and when users replace existing power strips, think about the installation space etc. The advantage is that you can purchase with confidence, and the one that has a cord as a table tap is the power supply that is located away from the outlet. It becomes the obtained characteristic that the surge protection function to the power supply unit of the equipment can be obtained by adding a low cost.

    The allowable voltage of the surge absorber is set to 10,000V to 20,000V, the withstand current is set to 100A to 2,000A, the varistor voltage of the varistor is set to 100V to 370V, and the surge resistance is set within the range of 10A to 7,000A. Surge protection power strips that are to be used are those in Japan where 90% or more of lightning surges are 10,000V or less and current is 1,000A or less. In addition, the surge absorber has a permissible voltage of 15,000V to 20,000V, a withstand voltage of 1500A, a varistor withstand current of 1,750A, and a withstand voltage of AC100V or more. According to the surge protection power strip, almost all lightning surges that occur in Japan Against, and thus exert a great effect that safely allows protection remarkably reliable electrical equipment.

    Surge protection power taps that have a maximum element part outer diameter of less than 20 mm, preferably 10 mm or less for each of the surge absorbers and varistors, such as conventional single taps, multi taps, table taps, etc. The surge protection device of the present invention can be installed and stored without any trouble in the tap outer package, and the maximum value of the surge absorber element outer diameter is 4 mm or less, and the maximum value of the varistor element outer diameter is 8 mm or less. In the surge protection power tap of the present invention, there is an advantage that it is possible to exhibit a more stable surge protection function while minimizing the influence of element interference and heat generation.

In implementing this device having the above-described configuration, the best or desirable mode will be described.
The surge protection power strip of the present invention allows one and / or multiple power supply plugs to be simultaneously connected to one AC power outlet, and the one AC power source. It serves to prevent abnormal high voltage currents from flowing into one and / or multiple electrical devices connected to the outlet. For example, a single tap, a multi-tap or a table tap In any case, it has no communication circuit, has a single electric circuit for AC power supply, and has a surge protection device incorporated in it, and the surge The protective device should be built into the tap shell.

    The single tap has a function that allows one electrical device to be connected to one AC power outlet, and the multi-tap allows multiple electrical devices to be connected to one AC power outlet at the same time. The table tap has a function that enables connection, and the table tap can have a function that enables the blade branch portion for outlet branching to be arranged at an arbitrary predetermined distance from one AC power outlet. As shown in the embodiment, a predetermined length cord can be provided between the tap outer package and the plug.

    The tap exterior body ensures electrical insulation, can form one or a plurality of AC power outlet branching blade receptacles, and can form an insertion plug directly or through a predetermined length cord. It should have the function of allowing the surge protection device to be built in, and should have a similar appearance and dimensions as a conventional single tap, multi-tap or table tap.

    The blade receptacle for branching AC power outlets has a function of mechanically and electrically connecting / disconnecting the power plugs of one and / or a plurality of electric devices, for example, in an embodiment described later. As shown, it can be used for general household 100V outlet (JIS C 8303 2-pole outlet 15A125V), as well as an outlet with a ground terminal (JIS C 8303 2-pole grounding pole) used for OA equipment installation location etc. Furthermore, a large-capacity outlet (JIS C 8303 with a 2-pole grounding electrode 20A125V) used for an air-conditioner installation location or a 200V air-conditioning installation location (JIS C 8303 2-pole grounding electrode). Corresponding to outlet 20A250V with It is possible to etc., furthermore, becomes capable of causing according to any of the countries in industry standard other than Japan.

    The plug is mechanically and electrically connectable / detachable to / from the outlet of the power supply wiring, and the power supply wiring is electrically connected to each branch blade receiving portion of the tap exterior body in the connected state. It has a function to enable energization, and can be integrated with the tap exterior body in a planted shape, and can be inserted and removed at the end of a predetermined length cord derived from the tap exterior body , And an AC power source insertion blade portion protruding from the grip portion. Basically, as shown in an embodiment described later, a general household 100V outlet (JIS C 8303 2-pole outlet 15A125V) In addition to an outlet with a ground terminal for use in OA equipment installation location (JIS C 8303 2-pole outlet with socket 15A 125A) In addition, a large-capacity outlet (JIS C 8303 with a 2-pole grounding pole 20A125V) used for an air-conditioner installation location and a 200V air-conditioning installation location (JIS C 8303 with a 2-pole grounding pole) It is possible to make it correspond to the outlet 20A250V), and it is also possible to make it conform to the industrial standard of any country other than Japan.

    The surge protection device ensures sufficient high-voltage absorption speed when an abnormally high voltage or abnormally high current such as an induced lightning surge flows between the plug and each branch blade holder. It is possible to prevent the discharge continuity phenomenon in which the circuit current flows while the circuit is at a low voltage, and it has a function that can safely protect various electrical devices connected to each branch blade holder. Surge absorbers and varistors are connected in series between each part and the plug, and at least one of them must be connected in parallel.

    The surge absorber forms part of the surge protection device, and ensures a sufficiently high voltage absorption speed when an abnormally high voltage or abnormally high current flows between each blade receiving part and the plug. The surge protection device connected in series with the varistor must be incorporated in parallel connection between each branch blade receiving part and the plug, and its allowable voltage Should be 10,000V to 20,000V, and the withstand current should be 100A to 2,000A. More specifically, the allowable voltage should be 15,000V to 20,000V and the withstand current should be 1500A. The maximum value of the outer diameter of the element portion is less than 20 mm, preferably 10 mm or less, taking into consideration the ease of storage in a tap outer package having the same shape and dimensions as the conventional type. It should be further, as shown in the examples below, and it is desirable to the maximum value of the element outer diameter so as to be 4mm or less it can be said.

The varistor forms a part of a surge protection device. When an abnormally high voltage or abnormally high current flows between each branch blade receiving part and the plug, the AC power supply circuit becomes low voltage. A surge protection device connected in series with a surge absorber is connected in parallel between each branch blade receiving part and the insertion plug. The varistor voltage should be set within the range of 100V to 370V, and the surge resistance should be set within the range of 10A to 7,000A. 750A, with a withstand voltage of AC100V or more, it is desirable that the outer diameter of the element is taken into consideration when storing the tap in the same shape and size as the conventional type. The maximum value should be less than 20 mm, preferably 10 mm or less, and as shown in the examples described later, the maximum value of the outer diameter of the element portion should be 8 mm or less. .
In the following, the structure thereof will be described in detail together with an embodiment representative of the present invention shown in the drawings.

The drawings show some typical embodiments embodying the technical idea of the surge protection power tap of the present invention.
It is a circuit diagram which shows a surge protection power tap. It is a top view which shows a multi tap. It is a front view which shows a multi tap. It is a side view which shows a multi tap. It is a front view which shows the surge protection device inside a multi tap. It is a top view which shows the surge protection device inside a table tap. It is a graph which shows a surge source waveform. It is a graph which shows a response speed waveform. It is a graph which shows the response speed waveform of a varistor. It is a graph which shows the response speed waveform of a surge protection device.

    The example shown in FIG. 1 to FIG. 10 is a plug outer body 2 that is formed by arranging and forming a plurality of outlet branching blade receiving portions 3, 3, and 3 at appropriate positions, and can be connected to and disconnected from a household AC power outlet. The plug 4 is directly integrated, and is composed of a surge absorber 6 and a varistor 7 in the tap exterior body 2 between the branch blade receiving portions 3, 3, 3 and the insertion plug 4. A typical embodiment of the surge protection power tap of the present invention, which is formed by connecting a surge protection device 5, is shown.

    As can be clearly understood from FIGS. 1 to 5, the surge protection power tap 1 according to the present invention includes the outlet branch blade receiving portions 3 on the left and right side walls 20, 20 and the top wall 21 of the synthetic resin tap exterior body 2. , 3 and 3, and a multi-tap 1 in which a plug 4 that can be connected to and detached from a household AC power outlet (JIS C 8303 2-pole outlet 15A125V) is projected and integrated on the bottom wall 22. 1 and FIG. 5, surge protection comprising a surge absorber 6 and a varistor 7 connected in series between the branch blade receiving portions 3, 3, 3 and the insertion plug 4. The device 5 is connected in parallel and incorporated in the tap outer package 2.

    Surge protection device 5 Surge absorber 6 has a withstand voltage of 15,000 V or more, a withstand current of 1,500 A, and an element part outer diameter of Φ2.6 mm × 4 mm, and a varistor 7 has a withstand current of 1,750 A, AC 100 V A compatible voltage product with an element outer diameter of Φ8 × 3 mm is used, and the surge protection device 5 is dimensioned so that it can be incorporated into the tap armor 2. More specifically, the surge absorber 6 is a cherry blossom. NVP-301, 2.6Φ (300V, 1,500A) or NVP-301, 3.1Φ (300V, 3,000A), varistor 7 manufactured by Denshi Co., Ltd., CNR-07V271K (270V, manufactured by Sakura Denshi Co., Ltd.) 1,750A) or CNR-14V271 (270V · 6,000A).

    As shown in FIG. 6, the surge protection power tap 1 includes a plurality of outlet branching blade receiving portions 3, 3, 3 arranged on the top surface, and is formed from a tap outer body 2 formed via a predetermined length cord 40. The table tap 1 can be provided with an insertion plug 4 that can be connected to and disconnected from an AC power outlet, and the branch blade receiving portions 3, 3, 3 and the insertion plug 4 are provided in the tap exterior body 2. One surge protection device 5 formed by connecting a surge absorber 6 and a varistor 7 in series with the cord 40 is connected in parallel.

(Operation / Effect of Example 1)
The surge protection power tap 1 of the present invention constructed as described above is a multi-tap having a tap outer package 2 having the same outer shape and dimensions as those currently on the market, as shown in FIGS. Therefore, it is possible to easily and safely replace the multi-tap used so far in homes and offices without causing problems such as installation space and connection errors. Even when the table tap type shown in FIG. 6 is used, there is an advantage that the table tap can be easily replaced and used.

    Then, the surge protection device 5 built in the surge protection power tap 1 has a surge waveform as shown in FIG. 7 with a rise time of 1.2 μsec, a discharge time up to 50% of 50 μsec, and an ultimate voltage. As a result of applying a 10 KV pulse wave and measuring the response start voltage and the arrival time to the standard voltage (300 V in this case), as shown in FIG. NVP-301 · 3.1 (applied waveform and discharge waveform were measured separately) obtained a response start voltage of 700.6 V and an arrival time of 0.6 μsec to the standard voltage.

    Further, as shown in FIG. 9 and Table 2 below, a pulse wave having a rise time of 8 μsec, a discharge time of up to 50% of 20 μsec, and an ultimate voltage of 1000 V is applied, and a response start voltage and an arrival time to the standard voltage (in this case, 300 V As a result, a response start voltage of 385.2 V and an arrival time to the standard voltage of 0.3 μsec were obtained.

    The surge protection device 5 varistor 7 (CNR-14V271) built in the surge protection power tap 1 is applied with a pulse wave having a rise time of 8 μsec, a discharge time of up to 50% of 20 μsec, and an ultimate voltage of 1000 V, a response start voltage, As a result of measuring the arrival time to the standard voltage (5000 V in this case), as shown in FIG. 10 and Table 3 below, the response start voltage of 396.0 V and the arrival time to the standard voltage of 0.0 μsec were obtained. Obtained.

    Further, as shown in Table 4 below, the surge protection device 5 varistor 7 (CNR-14V271) has a rise time of 8 μsec and a discharge time of up to 50% of 20 μsec (8 × 20 μsec) 6,000 A by experiments once. It has a durability of up to 100 times at 800A, 1.2 × 50 μsec breaks at 2,600A once, endures up to 100 times at 390A, and 10 × 200 μsec breaks at 700A once, 130A Endured up to 100 times, 10 × 700 μsec breaks at 210A 1 time, 47A endured up to 100 times, 10 × 1,000 μsec broke down at 160A1 time, and confirmed to endure up to 100 times at 37A. The surge protection device 5 formed by connecting the varistor 7 and the surge absorber 6 in series is Thing takes 90% or more lightning surge and has a permanently withstand performance was confirmed.

    As a result of such an experiment, the surge protection device formed by connecting the surge absorber 6 (Sakura Electronics Co., Ltd. NVP-301 · 3.1Φ) and the varistor 7 (Sakura Electronics Co., Ltd. CNR-14V271) in series. 5 has a withstand voltage of 10,000 V or more and a withstand current of 3,000 A, which can sufficiently withstand lightning surges, and the surge absorber 6 has characteristics that are difficult to deteriorate because it does not carry noise. It is open in the failure mode and has a feature that high safety can be secured.

(Conclusion)
As described above, the surge protection power strip of the present invention can achieve the intended purpose uniformly by its new configuration, and is easy to manufacture, and the lightning surge protection technology for power strips from the past. Compared with, the communication line circuit such as a modular jack for communication is completely abolished, the number of parts is greatly reduced, and the durability is greatly increased, making it lighter and cheaper and much more economical. In addition, since it can be most suitable for connecting only the power supply of electrical equipment that does not have a communication function such as an analog line or ISDN (Integrated Services Digital Network), a general function that does not have a communication function For general households that mainly use home appliances, it is hard to say that offices and constructions that want to provide lightning surge protection for multiple office equipment. Is also highly regarded in the general outside the home field of, such as, use over a wide range, it is expected to be those that continue to spread.

1 Surge protection power tap 2 Tap exterior 3 Blade receptacle for outlet branch 4 Plug
40 Same code 5 Surge protection device 6 Surge absorber 7 Varistor

Claims (8)

    For AC power supply for home use, either one or more of the blade receptacles for AC power outlet outlet branching are arranged in place, either directly integrated with the formed tap exterior or via a predetermined length cord A plug-in plug that can be connected to and detached from the outlet is provided, and a surge protection device that is formed by connecting a surge absorber and a varistor in series between the branch blade receiving portion and the plug-in plug in the tap outer package. A surge protection power strip characterized in that at least one is connected in parallel.     For AC power supply for home use, either one or more of the blade receptacles for AC power outlet outlet branching are arranged in place, either directly integrated with the formed tap exterior or via a predetermined length cord A plug-in plug that can be connected to and detached from the outlet is provided, and a surge protection device that is formed by connecting a surge absorber and a varistor in series between the branch blade receiving portion and the plug-in plug in the tap outer package. At least one of them is connected in parallel, and the surge protection device surge absorber ensures high voltage absorption speed, and the surge protection device varistor discharges the circuit current flows while the AC power supply circuit is at a low voltage. A surge protection power strip characterized by being designed to prevent flow phenomena.     Whether the tap exterior is a single tap or a multi-tap, in which a plurality of outlet branching blade receiving portions are arranged and formed in place, and a plug that can be connected to and detached from a household AC power outlet is directly integrated. The surge protection power strip according to any one of claims 1 and 2, wherein the surge protection power strip is configured as either one.     The tap outer body is a table tap in which a plurality of outlet branching blade receiving portions are arranged and formed at appropriate positions, and plugs that can be connected to and detached from household AC power outlets via predetermined length cords are provided. The surge protection power strip according to claim 1 or 2, wherein     The allowable voltage of the surge absorber is set to 10,000V to 20,000V, the withstand current is set to 100A to 2,000A, the varistor voltage of the varistor is set to 100V to 370V, and the surge resistance is set within the range of 10A to 7,000A. The surge protection power strip according to any one of claims 1 to 4, wherein     The allowable voltage of the surge absorber is set to 15,000V to 20,000V, the withstand current is 1500A, the withstand current of the varistor is set to 1,750A, and the withstand voltage is AC100V or more. A surge protection power strip according to claim 1.     The surge protection power strip according to any one of claims 1 to 6, wherein the maximum value of the outer diameter of each of the surge absorber and the varistor is less than 20 mm, preferably 10 mm or less.     The surge protection power tap according to any one of claims 1 to 6, wherein a maximum value of the outer diameter of the surge absorber element portion is 4 mm or less and a maximum value of the varistor element portion is 8 mm or less.

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