JP2000048851A - Washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer capable of connecting wires without detaching a bolt nut washer of a battery terminal, capable of performing measurement, capable of perform protection from heavy current to be generated in short circuit, and capable of restraining load voltage from being fluctuated. SOLUTION: A washer 10 having a ring-shaped part 12, on which a hole part 11 for inserting a bolt-shaped electrode terminal is formed, is provided with an insulating member 13 projected radially outwardly from the ring-shaped part 12, a fuse 17 provided in the insulating member 13 and electrically connected to the ring-shaped part 12, and a tab 19 electrically connected to the fuse 17 and projected radially outward from the insulating member 13. Moreover, a resistor 18 for preventing voltage fluctuation in a load connected to a cell 30 is provided between the fuse 17 and the tab 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a washer attached to a battery terminal.

[0002]

2. Description of the Related Art For example, in a telephone line switching center,
Even when the power supply is stopped, it is necessary to secure the use of the line, and a lead storage battery is used as a backup power supply for that purpose. In this case, the lead storage battery is sufficiently charged by being charged by external power or solar power, and thus is provided as a backup power source when power supply is stopped.

[0003] In order to maintain the performance of a lead-acid battery charged as described above, it is necessary to check and grasp the performance of the lead-acid battery on a daily basis. Performs measurements generally. However, the measurement of the terminal voltage may be performed at a portion where the lead storage battery is provided, but may be performed at a position distant therefrom, or the measurement may be performed automatically.

As described above, when the measurement is automatically performed, a voltage measuring wire is attached to the terminal of the battery, and the wire is connected to a measuring device provided at a further distant place to connect the terminal voltage in a remote case. We are measuring.

[0005] In this case, the battery terminal is a bolt-nut washer type, and the washer used for this terminal has a ring shape, and has a function of simply interposing wiring or the like.

[0006]

Since the battery terminals are of the bolt-nut washer type as described above,
When attaching a measuring line to a battery in operation, it is necessary to loosen the bolt and disconnect the load and the charger connected to the battery terminal from the state of connection to the battery.
For this reason, there is a problem that the work is troublesome and the operation is interrupted.

Further, when the battery is operated, a short circuit may occur in the connected measurement line, and a current exceeding an allowable value may flow through the measurement line, which may cause a fire. Sometimes.

Further, when the battery is float-charged, a short circuit may occur in the connected measurement line, and a large current may be shunted to the measurement line, causing a voltage fluctuation such as a decrease in the load voltage. And so on.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to be able to perform wiring measurement without removing a bolt / nut washer of a battery terminal, and to protect from a large current generated in a short circuit. And a washer that can suppress load voltage fluctuation.

[0010]

According to a first aspect of the present invention, there is provided a washer having a ring-shaped portion formed with a hole through which a bolt-shaped electrode terminal is inserted. An insulating member protruding radially outward from the portion; a fuse provided inside the insulating member and electrically connected to the ring-shaped portion; and an insulating member electrically connected to the fuse and connected to the fuse. And a tab formed to protrude radially outward.

According to a second aspect of the present invention, the electrode terminal is provided on the battery, and a resistor is provided between the fuse and the tab to prevent a voltage change at a load connected to the battery. The washer according to claim 1, wherein:

According to the first aspect of the present invention, there is provided an insulating member projecting radially outward from the ring-shaped portion, and a fuse provided inside the insulating member and electrically connected to the ring-shaped portion. A tab electrically connected to the fuse and formed to project radially outward from the insulating member;
Therefore, when the washer is inserted into the bolt-shaped terminal, the tab formed to protrude radially outward of the insulating member protrudes outward. For this reason, if a connecting member is connected to this portion, the battery can be measured without loosening the nut, and the measurement can be performed by the measuring device without interrupting the operation of various devices connected to the battery. .

Further, since a fuse electrically connected to the ring-shaped portion is provided inside the insulating member, the fuse is blown when an overcurrent is conducted, so that the washer is electrically connected to the washer. It is possible to prevent the occurrence of a fire at the connected measuring device or the like or at the connection site, and to protect the measuring device or the like.

According to the second aspect of the present invention, since a resistor is provided between the fuse and the tub to prevent a voltage change in a load connected to the battery, the battery is float-charged. In this case, even if the wirings are short-circuited, a resistor is provided to allow current to flow through the resistor, thereby preventing a voltage change occurring in another load connected to the battery. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The washer 10 connected to an electrode terminal of a lead storage battery or the like is provided so as to be inserted through the electrode terminal 31 so as to connect a battery having an electrode terminal 31 such as a lead storage battery 30 to a measuring device 32 as shown in FIG. Things.

This washer 10, as shown in FIG.
It has an insertion hole 11 through which the electrode terminal 31 can be inserted, and the periphery thereof is a ring-shaped portion 12 made of metal like a normal washer.

A predetermined portion of the ring-shaped portion 12 is provided with a protruding body 13 formed to protrude radially outward. The protruding body 13 and the ring-shaped portion 12 may have various configurations such as a configuration in which they are engaged and locked and fixed, a configuration in which they are bonded, or a configuration in which they are welded.

The projecting body 13 has a housing 15 made of an insulating material, and a hole 16 is formed at a central portion of the housing 15 along the longitudinal direction. The hole 16 has one end open to the ring-shaped portion 12 and is formed so as to penetrate radially outward therefrom.

The hole 16 is provided with one end 17a of the terminal of the fuse 17 at the open end, and
Is electrically connected to the ring-shaped portion 12 of the hole 16.
Blocking the opening to. The other end 17b of the terminal is provided at a position of an appropriate depth in the hole 16, and a fusing portion 17c is provided between one end 17a and the other end 17b of the terminal.
Is attached. Thereby, when an excessive current is conducted, it is cut off.

Since the fuse 17 and a resistor 18 described later are provided inside the protruding body 13, the ring-shaped portion 12 has a thickness corresponding to the thickness.

A resistor 18 is provided from the other end 17b of the terminal to the other end of the hole 16. Resistor 1
8 is set large enough so that the current flowing through the various loads connected to the lead-acid battery 30 is reduced so as not to cause voltage fluctuations.

A tab 19 made of metal is attached to the other end terminal 18b of the resistor 18. In order to attach the tab 19, a fitting portion 20 is formed on the distal end side of the insulator 14 on the radially outer side. It is configured to have conductivity with the end terminal 18b.

The tab 19 has a configuration in which a portion protruding toward the outer shape side is engaged with the mail tab 33, thereby conducting a current to the measuring device 32 connected to the mail tab 33 via a wire. I have.

According to the washer 10 having the above-described configuration, the protrusion 13 is provided radially outward from the ring-shaped portion 12, and the tab 19 protruding radially outward of the protrusion 13 is provided. With this configuration, even if the washer 10 is attached to the electrode terminal 31, these connections can be easily made only by fitting the tab 19 into the mail tab 33. For this reason, the nut 34 fastened to the electrode terminal 31 is not loosened one by one and the connection of the load connected to this electrode terminal 31 is not disconnected, so that the operation of the load is not interrupted. Therefore, connection to the measuring device 32 via the mail tab 33 is facilitated.

Since the fuse 17 electrically connected to the ring-shaped portion 12 is provided inside the protruding body 13, when an overcurrent is conducted to the measuring device 32, the fusing portion 17c Fusing prevents overcurrent from flowing through the measurement line and the measurement device 32. For this reason, it is possible to prevent the occurrence of fire due to conduction of the overcurrent, and to protect the measuring device 32 and the like.

Further, the protruding body 13 is provided with a resistor 18 which is electrically connected to the fuse 17. Conduction can be prevented. For this reason, it is possible to prevent the load connected to the lead storage battery 30 from causing a voltage change due to a change in the amount of current conduction due to a short circuit of the wiring or the like, and to operate the load stably. It becomes possible.

The embodiment of the present invention has been described above, but the present invention can be variously modified. This is described below. In the above-described embodiment, the ring-shaped portion 12 and the protruding body 12 are described as being integrated, but the protruding body 13 may be configured to be detachable from the ring-shaped portion 12. In addition, various modifications can be made without departing from the scope of the present invention.

[0028]

As described above, according to the present invention,
An insulating member formed to project radially outward from the ring-shaped portion, a fuse provided inside the insulating member and electrically connected to the ring-shaped portion, and a fuse electrically connected to the fuse and higher than the insulating member. A tab formed to project radially outward,
Therefore, when the washer is inserted into the bolt-shaped terminal, the tab formed to protrude radially outward of the insulating member protrudes outward. For this reason, if a connecting member is connected to this portion, the battery can be measured without loosening the nut, and the measurement can be performed by the measuring device without interrupting the operation of various devices connected to the battery. .

Further, since a fuse electrically connected to the ring-shaped portion is provided inside the insulating member, the fuse is blown when an overcurrent is conducted, so that the washer is electrically connected to the washer. It is possible to prevent the occurrence of a fire in the connected measuring device or the like or the measuring line and the connecting portion, and to protect the measuring device or the like.

Further, since a resistor is provided between the fuse and the tab to prevent voltage fluctuation at a load connected to the battery, when the battery is float-charged, short-circuits occur between the wirings. However, the configuration is such that a resistor is provided and current flows through the resistor, whereby voltage fluctuations occurring in other loads connected to the battery can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing a shape of a washer according to the embodiment.

FIG. 2 is a diagram showing a connection state between a lead storage battery and a washer according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Washer 12 ... Ring-shaped part 13 ... Protruding body 17 ... Fuse 18 ... Resistance body 19 ... Tab 20 ... Mating part 30 ... Lead storage battery 31 ... Electrode terminal 32 ... Measuring device 33 ... Mail tab 34 ... Nut

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomonobu Tsujikawa 3-4-1 Shibaura, Minato-ku, Tokyo Inside NTT Facilities Corporation (72) Inventor Yuji Kawagoe 3-4-1 Shibaura, Minato-ku, Tokyo No. 1 F-term in NTT Facilities Corporation (reference) 5H022 AA01 BB27 CC09 CC11 KK01 5H028 BB12

Claims (2)

[Claims] 1. A washer having a ring-shaped portion formed with a hole through which a bolt-shaped electrode terminal is inserted, wherein: an insulating member protruding radially outward from the ring-shaped portion; And a fuse electrically connected to the ring-shaped portion, and a tab electrically connected to the fuse and formed so as to project radially outward from the insulating member. Washers. 2. The battery according to claim 1, wherein the electrode terminal is provided on the battery, and a resistor is provided between the fuse and the tab to prevent a voltage change at a load connected to the battery. Item 9. The washer according to Item 1.