JPH0521876U - Sewing machine grounding device - Google Patents

Abstract

(57) [Summary] [Purpose] The grounding device of the sewing machine for discharging static electricity generated in the sewing machine does not have to be attached and detached every time the sewing machine is replaced. A spring body 6 formed of a conductor provided on a sewing machine table T on which a sewing machine M is mounted and contracted by abutting the sewing machine M when the sewing machine is mounted, and one end of the spring body 6
And an electric wire 3 whose other end is connected to the grounding portion S and which is provided so as to pass below the sewing machine table T.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grounding device for a sewing machine, which discharges static electricity generated when the sewing machine is driven.

[0002]

[Prior Art]

 FIG. 4 is an external perspective view showing the sewing machine. When the sewing machine is driven, a large amount of static electricity is generated due to friction between the pulley P, which is the main driving part of the sewing machine, and the belt B, which is provided between the pulley P and the drive motor, and accumulates this in the sewing machine. Let's do it.

Since this static electricity affects a control device such as a computer provided in the sewing machine and causes a malfunction of the sewing machine or an electric shock of an operator, it is necessary to discharge the static electricity. is there.

Therefore, the sewing machine is provided with a grounding device A for discharging static electricity. The grounding device A includes a terminal 2 that is fixedly connected to the machine frame of the sewing machine M with a screw 1, and an electric wire 3 that has one end connected to the terminal 2 and the other end connected to a switch part S of a sewing machine motor as a grounding part. It is composed by.

The grounding device of the sewing machine is provided at the rear portion of the sewing machine so as not to hinder the sewing work as shown in the figure.

According to the grounding device of the sewing machine configured as described above, the static electricity generated in the sewing machine M can be discharged from the switch section S to the ground through the terminals 2 and the electric wires 3, and the static electricity is generated. It is possible to prevent troubles such as computers in the sewing machine, and inconveniences such as electric shock of workers.

[0007]

[Problems to be solved by the device]

 However, the above-mentioned conventional grounding device for a sewing machine has the following problems. The sewing machine needs to be replaced with a sewing machine suitable for the sewing according to various sewing styles. In the grounding device A of the sewing machine shown in FIG. 4, a tool (screw) is required every time the sewing machine is replaced. The screw 1 provided on the rear portion of the sewing machine must be attached and detached by using a screwdriver, which causes a decrease in work efficiency.

[0008]

[Means for Solving the Problems]

 The grounding device for a sewing machine according to the present invention has been made to solve the above-mentioned conventional problems. The grounding device for a sewing machine is provided on a sewing machine table on which the sewing machine is mounted, and the sewing machine is mounted when the sewing machine is mounted. An elastic body formed of a conductor that abuts and contracts, and an electric wire having one end connected to the elastic body and the other end connected to a ground portion and provided so as to pass below the sewing machine table. They are trying to solve the conventional problems.

[0009]

[Action]

 In the grounding device for a sewing machine according to the present invention, when a predetermined sewing machine is placed on the sewing machine table when the sewing machine is replaced, the elastic body made of a conductor comes into contact with the sewing machine and contracts, so that the sewing machine is always in a conductive state. ..

The electric wire wired between the elastic body and the ground portion can discharge static electricity generated inside the sewing machine to the outside of the sewing machine.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals, and duplicate description will be omitted. 1 and 2 are views showing an embodiment of a grounding device for a sewing machine according to the present invention.

In FIG. 1, reference numeral 4 denotes a vibration isolating rubber provided on the sewing machine receiving plate Ta fixed to the sewing machine table T (four in the drawing), and when the sewing machine M is set, the sewing machine M is received on the upper surface of the sewing machine. The vibration of the can be eliminated.

At least one of the plurality of anti-vibration rubbers 4 is provided with a spring body of the grounding device of the sewing machine.

FIG. 2 is a view showing the installation state of the spring body of the grounding device of the sewing machine. In the figure, 6 is a spring body, and this spring body 6 is provided in a through hole 4a formed in the antivibration rubber 4 as shown in the figure, and is normally open.

P is a split pin, and this split pin P fixes the anti-vibration rubber 4 to the sewing machine receiving plate Ta and also fixes the spring body 6 at the upper part, and is in a conductive state with the spring body 6. It

An electric wire 3 is wired to the lower end of the split pin P, and the other end of the electric wire 3 passes under the sewing machine table T and is wired to the grounding portion (switch portion S).

In the grounding device of the sewing machine configured as described above, when the predetermined sewing machine M is set on the sewing machine table T, the spring body 6 is brought into contact with the bottom portion (oil pan) of the sewing machine M as shown in FIG. Contact and contract.

As a result, when the sewing machine M is set, the sewing machine M and the spring body 6 are always in a conductive state, and the static electricity generated in the sewing machine M can be discharged through the split pin P and the electric wire 3. ..

A sewing machine table having an oil pan for a sewing machine and having an anti-vibration rubber on the upper surface of the oil pan is designed so that the spring body 6 contacts the machine frame of the sewing machine when the sewing machine is set. It suffices to install a spring body inside the anti-vibration rubber.

[0020]

[Effect of the device]

 As described above, the grounding device for the sewing machine according to the present invention is provided on the sewing machine table on which the sewing machine is mounted, and is made of an elastic body formed of a conductor that contracts by contacting the sewing machine when the sewing machine is mounted. And an electric wire, one end of which is connected to the elastic body and the other end of which is connected to the grounding part, and which is provided so as to pass below the sewing machine table.Therefore, a grounding tool is used every time the sewing machine is replaced. The complicated work of attaching and detaching the device can be eliminated, and the work efficiency can be improved. Further, since the ground wire does not appear on the head of the sewing machine, the operability is not impaired and the aesthetics are not impaired.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a sewing machine table on which a sewing machine is placed.

FIG. 2 is an explanatory diagram showing a grounding device of a sewing machine, which includes a spring body provided inside a vibration-proof rubber of a sewing machine table and an electric wire connected to the spring body.

FIG. 3 is an explanatory view showing the action of the spring body of the grounding device when the sewing machine is placed on the sewing machine table shown in FIG.

FIG. 4 is an external perspective view showing a sewing machine provided with a grounding device for a conventional sewing machine.

[Explanation of symbols]

 M Sewing machine 3 Conductive wire T Sewing machine table S Grounding section (switch section)

Claims (1)

[Scope of utility model registration request] 1. An elastic body which is provided on a sewing machine table on which a sewing machine is mounted and which is formed of a conductor that contracts by abutting the sewing machine when the sewing machine is mounted; A grounding device for a sewing machine, comprising: an electric wire connected to the sewing machine, the electric wire being provided so as to pass below the sewing machine table.