JP2002259034A - Method for neutralizing rotary key - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a simple constitution to reduce the cost of assembling with respect to a method for neutralizing a rotary key. SOLUTION: In this method for neutralizing the rotary key, a rotary key device 8 has a rotary key 2, which has an axial-direction section part 2a, loosely fitted into a groove 4 formed in a pedestal 3 and has the rotary key 2 being freely rotatable and pivotally supported by a bearing 6 provided in one side part of the pedestal 3, and two flexible ribs 9 extended toward the rotary key 2 are fixed on both sides of the bearing of the pedestal 3, and these ribs 9 are brought into contact with the axial-direction section part 2a to hold the rotary key 2 in the neutral position and energize the rotary key towards the neutral position at the time of rotation of the rotary key 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for neutralizing a rotary key, and more particularly, to a rotary key having a cut surface in an axial direction held in a neutral position by a simple structure, and in a neutral position during rotation. The present invention relates to a method of neutralizing a rotating key to be energized.

[0002]

2. Description of the Related Art A conventional neutral key of this kind will be described with reference to FIGS. In FIG. 3, reference numeral 1 denotes a rotary key device. In the rotary key device 1, a rotary key 2 having an axial cutting surface 2a is loosely fitted in a groove 4 formed in a base 3, and A rotation shaft 5 of the rotation key 2 is rotatably supported by a bearing 6 provided on one side of the base 3 so as to be rotatable within a predetermined rotation range.

Further, a torsion spring 7 is wound around the rotating shaft 5, and both ends of the torsion spring 7 are extended so as to abut on the base 3 near the groove 4.

The rotary key 2 is held at the neutral position by the torsion spring 7, and when the rotary key 2 is rotated, one end of the torsion spring 7 is moved as shown in FIG. The rotary key 2 is displaced while being in contact with the cut surface 2a in the axial direction to increase the reaction force, and the other end is separated from the rotary key 2 and contacts the vicinity of the groove 4 of the base 3, so that the rotation is performed. The key 2 is urged in a direction to return to the neutral position.

[0005]

In the above-mentioned conventional method of rotating a rotary key, a torsion spring is provided on a rotating shaft of the rotating key, the rotary key is held at a neutral position by the torsion spring, and the rotating key is rotated. When is rotated, the rotary key is urged to return to the neutral position.

However, since the rotary key neutral method uses a torsion spring, the torsion spring is relatively expensive, requires a large number of assembling steps, and increases the defective rate.

[0007] Therefore, in the neutral method of the rotary key, there arises a technical problem to be solved in order to reduce the cost of assembly with a simple structure, and the present invention solves this problem. Aim.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above object, and a rotary key having an axial cutting surface is loosely fitted in a groove formed in a base. In a rotary key device rotatably supported by a bearing provided on one side of the base, two flexible members extending toward the rotary key on both sides of the bearing of the base. The rotating key is fixed to the neutral position by holding the rotating key in the neutral position, and the rotating key is urged toward the neutral position when the rotating key rotates. It is intended to provide a neutral method of a rotary key.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. For convenience of description, the same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, reference numeral 8 denotes a rotary key device. The rotary key device 8 is provided on both sides of a bearing 6 of a base 3 in place of a conventional torsion spring (7 in FIG. 3).
Two flexible ribs 9, 9 extending to the side are fixedly provided.

According to the method for neutralizing the rotary key of the present invention, the rotary ribs 2 are brought into the neutral position by the flexible ribs 9 abutting on the cut surface 2a of the rotary key 2 in the axial direction. When the rotary key 2 is rotated while being held, as shown in FIG. 2, one of the flexible ribs 9 bends while abutting on the axially cut surface 2a of the rotary key 2 to cause a reaction force. And the other is separated from the axial cut surface 2a of the rotary key 2, so that the rotary key 2 is urged in a direction to return to the neutral position. The rotary key 2 is urged in a direction in which the flexible rib 9 abuts on the axial cut surface 2a of the rotary key 2 in a direction to return to the neutral position. When the flexible rib 9 comes off the axial cutting surface 2a, the bias to the neutral position by the flexible rib 9 is lost or weakened. Therefore, it is possible to appropriately provide a stopper on the rotary key 2 so as not to rotate beyond the range.

[0011] Thus, in the neutral method of the rotary key, since the flexible rib 9 is used, the structure is simpler than that of the conventional method using a torsion spring. Rate can be reduced,
Costs can be reduced.

The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

[0013]

According to the present invention, as described in detail in the above embodiment, a rotary key having an axial cutting surface is rotatably supported by a bearing provided on one side of a base. In the rotary key device thus configured, two flexible ribs extending to the rotary key side are fixed to both sides of the bearing of the base, so that the flexible rib is cut in the axial direction. By contacting the surface portion, the rotary key is held at the neutral position, and when the rotary key is rotated, the rotary key can be biased toward the neutral position.

Further, the present invention has a simpler structure as compared with the conventional method using a torsion spring, facilitates assembling, and can reduce the defective rate, thereby contributing to cost reduction. This is an invention that has a truly significant effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotary key device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the embodiment of the present invention and showing a state where the rotary key device is rotated.

FIG. 3 shows a conventional example, and is a perspective view of a rotary key device.

FIG. 4 is a perspective view showing a conventional example, in which a rotary key device is rotated.

[Explanation of symbols]

 Reference Signs List 2 rotary key 2a axial cut surface 3 base 4 groove 6 bearing 8 rotary key device 9 flexible rib

Claims (1)

[Claims] 1. A rotary key having an axial cutting surface portion is loosely fitted into a groove formed in a base and is rotatably supported by a bearing provided on one side of the base. In the rotary key device, two flexible ribs extending to the rotary key side are fixed on both sides of the bearing of the base, and the ribs are brought into contact with the cut surface in the axial direction to fix the flexible rib. A method of neutralizing a rotary key, comprising: holding the rotary key at a neutral position; and urging the rotary key toward the neutral position when the rotary key is rotated.