JPH0643357U - Shaft coupling for rotating shafts in electrical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a low-cost shaft coupling that has an extremely simple structure and can smoothly transmit rotation even when the angle at which two axes intersect changes. 1. A joint formed by twisting a rectangular or similar flat hard plate member at the center so that the connecting plate parts (1a), (1a) at both ends intersect each other at right angles on the same plane. Including the member (1), the joint plate (1a) of the joint (1), (1
a) is the receiving groove (2) formed on the end faces of the left and right shafts (2), (3).
A structure inserted in a) and (3a) and rotatably connected about the screw shafts (2) and (3) by screw shafts (4) and (4) orthogonal to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shaft coupling that connects left and right rotating shafts of an electric device, for example, a volume shaft of an audio device and a shaft of an adjusting knob arranged on the front surface of a case.

[0002]

[Prior art]

 Conventionally, when extending the rotary shaft of an audio device, for example, the volume shaft (7) to the volume adjustment knob (8) on the front of the equipment case, the volume shaft (7) and knob are connected by a tubular joint (9) as shown in FIG. The shaft (10) is integrally connected, or is connected by a universal joint (11) as shown in FIG.

[0003]

[Problems to be solved by the device]

 The former method of integrally connecting with a tubular joint (9) has the advantage that the structure is simple and the cost is low, but on the other hand, when the axis of the volume shaft (7) and the knob shaft (10) are misaligned. There is a drawback that a smooth rotation cannot be performed due to a deviation occurring at the intersection of the two axes. Particularly in audio equipment, it is extremely difficult to completely align the shaft axis of the adjusting knob (8) attached to the front plate of the case with the axis of the volume shaft (7). Therefore, it is preferable to connect both shafts (7) and (10) by a universal joint (11) as shown in FIG. 4, but the universal joint itself is relatively expensive, which leads to an increase in product cost and price competition. There is a difficulty in using the audio products that are in quarrel.

Therefore, the present invention mainly provides a shaft coupling capable of transmitting rotation to a smooth even if a change occurs in an angle at which two axes intersect with each other with an extremely simple structure, and mainly solves the above-mentioned conventional drawbacks. It is intended.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following technical means. That is, in the shaft coupling of the rotating shaft according to the present invention, a flat hard plate having a rectangular shape or a similar shape is twisted at the central portion and the connecting plate portions (1a) and (1a) at both ends are viewed from the side end faces. It includes a joint member (1) formed so as to intersect each other at right angles, and the connecting plate portions (1a), (1a) of the joint (1) are formed on the end faces of the left and right shafts (2), (3). Which are inserted into the receiving grooves (2a) and (3a) and are rotatably connected around the screw shafts (4) and (4) which are orthogonal to the shaft cores of the shafts (2) and (3). It has a structure that is used.

[0006]

[Action]

 With the above structure, the shafts (2) and (3) and the joint member (1) are rotatably connected via the screw shafts (4) and (4). Like the le joint, it can handle the eccentricity and inclination of the left and right shafts and can rotate smoothly.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral (1) is formed by twisting a rectangular flat metal plate at the center so that the connecting plate parts (1a) and (1a) at both ends intersect each other at right angles when viewed from the side end face. In the joint member, the connecting plate portions (1a) and (1a) of the joint member (1) are connected to the shaft (2) of the left and right volumes (5) and the shaft (3) of the knob (6). The shafts (2) and (3a) are inserted into the receiving grooves (2a) and (3a) formed on the end face, and the shaft axes of the shafts (2) and (3) are orthogonal to each other. It is rotatably connected to the respective shafts (2) and (3).

The screw shafts (4) and (4) are screwed into the screw holes (2b) and (3b) of the shafts (2) and (3), but the connecting plate of the joint member (1). The screw shaft insertion holes (1b) and (1b) formed in the portions (1a) and (1a) are rotatably inserted. With this structure, the shafts (2) and (3) and the joint member (1) are rotatably connected to each other via the screw shafts (4) and (4). As with the joint, it can deal with the eccentricity and inclination of the left and right shafts, and can rotate smoothly.

Although a representative embodiment of the present invention has been described above, the present invention is not necessarily limited to only the above-described embodiment structure. For example, a hard synthetic resin material having sufficient strength may be used as the material of the joint member (1). In addition, it is needless to say that the present invention can be appropriately modified and implemented within a range in which the constituent features are provided and the effect is obtained.

[0010]

[Effect of device]

 Since the present invention is configured as described above, the left and right shafts (2) and (3) can be easily connected by the two screw shafts (4) and (4). Like the conventional universal joint, it can deal with eccentricity and inclination of the left and right shafts and can rotate smoothly, and its structure is such that the shafts (2) and (3) have receiving grooves at the tips. (2a), (3a) is formed, and the connecting plate part (1a), (1a) of the joint member (1) formed by twisting the central part of the plate material is inserted into the screw shaft (4) Since it has an extremely simple structure connected by (4), it can be provided at low cost, and other remarkable effects can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a shaft coupling according to the present invention.

FIG. 2 is a perspective view of the shaft coupling.

FIG. 3 is a perspective view showing an example of conventional means.

FIG. 4 is a perspective view showing another example of conventional means.

[Explanation of symbols]

 (1) Joint member (1a) Connection plate part (2) Volume shaft (2a) Groove (3) Knob shaft (3a) Groove (4) Screw shaft

Claims (1)

[Scope of utility model registration request] 1. A joint formed by twisting a rectangular or similar flat hard plate material at the center so that the connecting plate parts (1a), (1a) at both ends intersect at a right angle when viewed from the side end surface. Including the member (1), the connection plate portion (1a) of the joint (1), (1a) the left and right shafts (2), receiving groove (2a) formed in the end surface of (3),
A rotary shaft in an electric device that is inserted into (3a) and is rotatably connected around the screw shafts (4) and (4) around the screw shafts (2) and (3) at right angles. Shaft coupling.