JP2015216024A - Flat washer with connection terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat washer with a terminal connection capable of preventing increase in goods and management cost, without requiring a new metal fitting, by allowing difference in the size and position of a wire and a crimp terminal for connection with a terminal block, when a current or a signal is taken out by obtaining conduction from the terminal block to which a washer is fastened.SOLUTION: A flat washer with a terminal connection is configured so that a male terminal connection 103 for connection with a female connection terminal is extended from the periphery of a flat washer 101 and bent via a plurality of thin arms 102, and formed integrally with the flat washer 101.

Description

The present invention relates to a flat washer that is fastened and fixed to a terminal block. In particular, the present invention relates to a flat washer provided with a terminal connection function capable of obtaining electrical continuity with the terminal block.

Conventionally, for example, those disclosed in Patent Documents 1 to 3 have been disclosed as those having a specific function added to a flat washer.

Patent Document 1 discloses a resin washer for use in civil engineering such as an excavator, construction, mining machinery, and the like. The washer is formed with a gripping margin in order to improve the assembling property to the shaft coupling portion of a civil engineering machine or the like. (Fig. 5)

Patent Document 2 discloses a washer for displaying a temporarily tightened state of a nut screw or a bolt. A display terminal is formed on the washer. (Fig. 6)

Patent Document 3 discloses a flat plate washer that can prevent rotation of a nut. The washer is formed with an anti-rotation piece that prevents the nut from rotating by being bent upright and brought into contact with the nut. (Fig. 7)

The washers disclosed in these patent documents improve the assembling function, the tightening function, and the nut fixing function of the washer.

Japanese Patent Laid-Open No. 10-292815 (FIG. 1) JP-A-6-307422 (FIG. 1) Japanese Patent Laid-Open No. 10-196633 (FIG. 1)

The above-described washer is useful as an additional function provided to the washer. However, the washer disclosed in Patent Document 1 and Patent Document 2 does not have the additional function after removing the additional function portion after use. It is the usage to return to the original washer. Further, in the washer disclosed in Patent Document 3, the additional function portion is not removed, but the use is completed with a single washer.

Now, in the washer disclosed in the above-mentioned patent document, when continuity is obtained from the terminal block to which the washer is tightened and in addition to the originally connected electric wire and crimping terminal, an attempt is made to extract current and signals to the outside, The purpose is not reached. That is, it is necessary to newly attach a current extraction fitting and a signal extraction fitting to the terminal block, and in addition to these washers, a third fitting needs to be overlapped and tightened with a screw. For this reason, the cost of the third metal fitting itself and the length of the screw are required by the thickness of the third metal fitting, which increases the cost. Further, when the number of metal fittings to be overlapped increases, the contact resistance increases, so that heat generation at the terminal portion increases and the temperature at the terminal portion increases.

In addition, when continuity is obtained from the terminal block to which the washer is tightened and an electric current or signal is taken out in addition to the originally connected electric wire or crimp terminal, the size of the electric wire or crimp terminal connected to the terminal block is large. Depending on the sheath position, it is necessary to prepare various shapes of the metal fittings for taking out the wires. For this reason, the kind of metal fittings increases, and the labor and cost of management will increase.

Therefore, the present invention has been made in view of the above problems, and when a continuity is obtained from a terminal block to which a washer is tightened and an electric current or a signal is taken out to the outside, an electric wire or a crimp connected to the terminal block Providing a flat washer with a terminal connection that allows for differences in the size and position of the terminals and prevents the increase in goods and management costs and the increase in terminal heat generation without the need for new fittings. With the goal.

A flat washer with a terminal connection portion according to the present invention is configured to solve the above-described problem, and is a flat washer with a terminal connection portion in which the terminal connection portion extends from a peripheral edge portion of the flat washer, A plurality of thin arm portions are provided in a part of the installation portion, and the extension portion is provided so as to be deformable.

According to such a configuration, by extending the terminal connection portion from the peripheral edge of the flat washer via the thin arm portion, the terminal connection portion conducts from the terminal block to which the washer is tightened, and the third metal fitting is separately stacked. Since it can obtain without attaching together, the increase in cost and the heat_generation | fever increase in a terminal part can be prevented. In addition, when the third bracket is overlaid and tightened with screws, the washer and the third bracket may be rotated, the position of the third bracket may rotate, and a certain direction may not be determined. If there is a flat washer with a terminal connecting part in the first place, there is no fear of carrying around.

In addition, by extending the terminal connection part from the flat washer peripheral part through the thin arm part, the extended part can be deformed, depending on the size and position of the electric wire and the crimp terminal connected to the terminal block, The position can be allowed within a range in which the thin arm can be deformed.

In addition, the terminal connection portion may be formed in a step different from the flat washer fastening surface and may be arranged in parallel.

According to such a configuration, since the terminal connecting portion is formed in a different level from the flat washer fastening surface, interference with the wire originally connected to the terminal block can be avoided. In addition, since the terminal connection part and the flat washer fastening surface are arranged in parallel, when connecting the flat washer to the terminal block and connecting the terminal to the terminal connection part, change the tool such as a screwdriver or pliers. The connection workability is good because the need to change the angle is minimal.

In addition, the arm portion may adopt a configuration in which the flat washer and the terminal connection portion are perpendicular to each other.

According to such a configuration, since the flat washer and the arm portion, and the arm portion and the terminal connection portion are configured to form a right angle with each other, when the flat washer is viewed from the extending direction of the arm portion, the flat washer is close to the flat washer. A terminal connection can be arranged. That is, it is possible to provide a flat washer with a terminal connection portion that is suppressed from protruding from the terminal block and is excellent in space saving.

As described above, according to the present invention, even when an electric current or a signal is taken out from the terminal block to which the washer is tightened to obtain continuity, the size and position of the electric wire and the crimp terminal connected to the terminal block are not affected. It is possible to provide a flat washer with a terminal connection portion that allows a difference and prevents an increase in goods and management costs and an increase in heat generation of terminals without requiring a new metal fitting.

The perspective view of the flat washer with a terminal connection part which shows 1st embodiment is shown. The perspective view of the flat washer with a terminal connection part which shows the state which mounted | wore with the terminal screw is shown. The perspective view of the flat washer with a terminal connection part which shows the state piled up with the crimp terminal is shown. The perspective view of the flat washer with a terminal connection part which shows 2nd embodiment is shown. The flat washer in a prior art example is shown. The flat washer in a prior art example is shown. The flat washer in a prior art example is shown.

Hereinafter, the present invention will be described with reference to embodiments.
(Embodiment 1)
First, the configuration of the flat washer 1 with a terminal connection portion according to the present embodiment will be described with reference to FIGS. 1 to 3. The flat washer 1 with a terminal connection part which concerns on this embodiment consists of brass which has electroconductivity. Moreover, tin plating is given to the surface.

The shape of the main body is such that the flat washer 101 serving as the base, the two narrow arms 102 bent and extended from the peripheral edge of the flat washer 101, and the ends of the narrow arms are joined together. It has four portions, namely, a bridging portion 102a and a terminal connection portion 103 that is bent and extended from the peripheral portion of the bridging portion 102a.

Each part is formed in a substantially rectangular shape. The flat washer portion 101 has a flat plate rectangular shape with a plate thickness of 0.8 mm, and a screw through hole 101a is provided at a substantially central portion of the seating surface 101b for passing a screw along the plate thickness direction. . Further, the outer corner portion of the flat washer portion 101 is chamfered and processed into an arc shape.

The two narrow arms 102 extending from the peripheral edge of the flat washer 101 are provided at both ends of the flat washer 101 and bent so as to be perpendicular to the seating surface 101b of the flat washer 101. It is formed. When the direction of the bending axis is the width direction of the flat washer portion 101, the arm portion 102 is formed to be 1/8 of the width of the flat washer portion 101.

A bridging portion 102 a that connects the arm portions to each other is provided at the end in the extending direction of the thin arm portion 102. The bridging portion 102a is formed in a rectangular shape with the extending direction as a short side. Compared with the flat washer portion 101 and the bridging portion 102a, the width of the arm portion 102 is formed narrower and the arm portion is relatively easily deformed.

A hole 102b is formed between the arms. Facing the hole 102b, the center line in the width direction of the hole 102b coincides with the center of the screw through hole 101a.

The terminal connection portion 103 formed on the peripheral edge portion of the thin arm portion 102 is further bent so as to be perpendicular to the thin arm portion 102. That is, the flat washer portion 101 is formed so as to be parallel to and parallel to the flat washer portion 101.

The size of the terminal connecting portion 103 in the width direction is formed to be approximately one third of the size of the flat washer portion 101 and the thin arm portion 102 in the width direction. Further, the position to be formed is a central portion in the width direction. The terminal connection portion 103 has the shape of a general flat plate connection terminal (tab terminal). A female connection terminal (receptacle) suitable for the flat plate connection terminal is connected to the terminal connection portion 103, and electrical continuity can be obtained from the terminal block to extract current and signals to the outside.

Next, the space saving property of the flat washer 1 with a terminal connection portion will be described. Generally, in a terminal part, it is desirable that the charging part with conduction should not protrude from the terminal part as much as possible from the viewpoint of insulation. In the flat washer 1 with a terminal connection portion, the hole portion 102a formed at the central portion in the width direction of the arm portion 102 is effective for space saving. Hereinafter, the space saving of the hole 102b will be described.

In FIG. 2, the figure which attached | subjected the terminal screw 2 to the flat washer 1 with a terminal connection part is shown. Normally, when the terminal screw 2 is mounted, the size of the seating surface 101b is such that the head of the terminal screw does not come into contact with the arm 102 bent at a right angle from the flat washer 101. Form larger than. In the flat washer 1 with a terminal connection portion in the present invention, an arm portion is formed at both ends of the flat washer, and a hole portion 102b is formed between the arm portions, so that a part of the outer shape of the terminal screw 2 is It can arrange | position so that the said hole 102b may be penetrated.

In the present embodiment, the bending start position of the arm portion 102 can be shortened by about 1 mm, and the protruding lengths of the arm portion 102 and the terminal connection portion 103 can be shortened accordingly.

Next, the use state of the flat washer 101 with the terminal connection portion will be described. FIG. 3 shows a view in which the flat washer portion 1 is overlapped with the crimp terminal 3 and the terminal screw 2 is attached. Generally, when attaching crimp terminals to a terminal block (terminal block is not shown), crimp terminals, flat washers, and spring washers are placed one on top of the other, and terminal screws are inserted through them to screw into the terminal block. Tighten and install.

In the present embodiment, a crimp terminal, a flat washer 1 with a terminal connection portion, and a spring washer are arranged to overlap each other, and a terminal screw is inserted through them to be screwed to a terminal block. The bent position of the bent portion 101 </ b> C is provided closer to the screw head than the barrel portion 301 so that the arm portion 102 and the terminal connecting portion 103 do not interfere with the barrel portion 301 of the crimp terminal 3. Further, the length of the arm portion 102 is provided so as to exceed the height of the barrel portion 301. When a female connection terminal (receptacle) is connected to the terminal connection portion 103, the female connection terminal contacts the barrel portion. It is formed so that it does not.

Further, by deforming the arm portion 102, the position of the terminal connection portion 103 can be moved in accordance with the size and position of the electric wire and the crimp terminal connected to the terminal block.

(Embodiment 2)
Next, a second embodiment will be described with reference to FIG. The difference from the first embodiment is that the number of the thin arm portions 102 is different. In the second embodiment, a total of four thin arm portions 102d are provided, two at the end of the flat washer portion 101 and two at equal intervals. As the number of thin arms increases, it becomes difficult to deform easily. Even when an inadvertent force is applied after connecting the wires, the positional relationship when connected can be maintained.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

For example, regarding the change of the terminal connecting portion 103, in the embodiment, the terminal connecting portion 103 is approximately one third of the size of the flat washer portion 101 and the arm portion 102 in the width direction at the center portion in the width direction of the arm portion 102. However, two terminal connection portions may be bent at the left and right end portions in the width direction to increase the number of terminal connection portions. Further, the width of the terminal connection portion is narrowed (specifically, smaller than one third in the width direction), and a total of 3 in the width direction center portion of the arm portion 102 and the left and right end portions. Two terminal connections may be formed. In this way, a plurality of paths for obtaining continuity from the terminal block and extracting current and signals to the outside can be formed.

Further, regarding the modification of the arm portion 102, in the embodiment, the thin arm portion is formed to extend from both end portions of the flat washer, but the narrow arm portion may be formed inward from the end portion. Good. By forming in this way, even when there is little free space near the terminal portion, a terminal connection portion for taking out current and signals can be provided outside.

Moreover, it is good also as a form in which the terminal connection part is formed in the thin arm part extended and formed from the flat washer part 101 about the said bridge part 102a as it is. As a result, a plurality of paths can be formed by obtaining continuity from the terminal block and deforming paths for taking out current and signals to the outside. In particular, the three arm portions may be formed with different lengths, and the terminal connection portions may have different heights. Thereby, the positions of the terminal connection portions can be separated from each other, the connection work of the female connection terminals can be facilitated, and workability can be improved.

DESCRIPTION OF SYMBOLS 1 Flat washer 101 with a terminal connection part Flat washer part 101a Screw through-hole 101b Seat surface 101c Bending part 102 Arm part 102a Bridging part 102b Hole part 102c Bending part 103 Terminal connection part 2 Terminal screw 3 Crimp terminal 301 Barrel part

Claims (3)

A flat washer with a terminal connecting part, the terminal connecting part extending from the peripheral edge of the flat washer,
A plurality of thin arm portions are provided in a part of the extended portion,
A flat washer with a terminal connecting portion, wherein the extending portion is provided to be deformable.
2. The flat washer with a terminal connection part according to claim 1, wherein the terminal connection part is formed in a step different from a flat washer fastening surface and arranged in parallel.
The arm is
The flat washer and the terminal connection;
3. The flat washer with a terminal connection part according to claim 2, wherein the flat washer is formed at right angles to each other.

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