JPH0745925Y2 - Rotating electrical components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a multi-spindle multi-spindle rotary type in which a plurality of rotary electric components are arranged in series and a plurality of operations can be performed by a plurality of coaxial operation shafts. The present invention relates to an electric component, and particularly, to provide a component having good performance even when a plurality of rotary electric components have different outer sizes.

[Prior Art] A conventional rotary electric component will be described with reference to FIG. 2 by taking a rotary variable resistor having multiple axes as a series.

Reference numeral 1 is a small rotary variable resistor, and 2 is a large rotary variable resistor. Small rotary variable resistor 1-3, 4
Is a pair of left and right resistance substrates, and a resistor and a current collector (not shown) are formed on the opposing surfaces thereof. The resistance boards 3 and 4 are held by an insulating case 5, and a spacer 6 is arranged on the right side of the resistance board 4 on the right side. The spacer 6 has a U-shape having parallel arms from the right side of the spacer 6. Front plate 7
However, a flat plate-shaped rear side plate 8 is arranged on the left side of the resistance substrate 3, and the arms of the front side plate 7 grip the side surfaces of the resistance substrates 3 and 4 and the insulating case 5 while Part end 7a
Are caulked to the rear side plate 8 and integrally fixed. A slider receiver 9 is housed between the pair of resistance substrates 3 and 4, and the surface of the slider receiver 9 facing the resistance substrates 3 and 4 is connected to the resistor and the current collector. A slider (not shown) that is in sliding contact is fixed. The large rotary variable resistor 2
Similarly to the small rotary resistor 1 described above, the resistance substrates 10 and 1
1, including a slider (not shown) and a slider receiver 12, but the resistance boards 10 and 11 are held by a heat radiating plate 13 on the right side and an insulating case 14 on the left side. A bearing 15 having an external mounting screw portion is arranged on the right side of the heat radiating plate 13, and the small rotary variable resistor 1 is arranged on the left side of the insulating case 14, and a U-shape having parallel arm portions. While holding the bearing 15, the heat dissipation plate 13, the insulating case 14, and the side surface of the spacer 6 of the small rotary variable resistor 1 by the front side plate 16, the front end 16a of the arm portion is placed on the spacer 6. At the very least, they are integrally fixed together with the small rotary resistor 1. The small diameter portion 17b of the hollow outer shaft 17 having the large diameter portion 17a and the small diameter portion 17b is inserted through a hole passing through the center of the integrated variable resistor. In the small diameter portion 17b of the outer shaft 17, two long slits 17c are formed in the axial direction from the end portion, and the slider receiver 12 of the large rotary variable resistor 2 and the small Engaging projections 12a and 9a respectively provided on the inner walls of the holes of the slider receiver 9 of the variable resistor 1 through which the outer shaft is inserted are engaged with the slit 17c and rotate integrally with the outer shaft 17. It is possible. The end 17d of the small-diameter portion 17c of the outer shaft 17 is caulked to a stop plate 18 installed on the left side of the slider receiver 9 of the small rotary variable resistor 1 so that the outer shaft 17 cannot be removed. Is attached to. A rotation stopper portion 9a is formed on the slider receiver 9 of the small-sized rotary variable resistor 1, and contacts the rotation stopper convex portion 5a formed on the insulating case 5 to regulate the rotation range. ing.
In the hollow hole 17e of the outer shaft 17, an inner shaft 19 (partially not shown) for operating, for example, a rotary switch or a push-operated switch (not shown) located on the left side of the small rotary variable resistor 1 is provided. ) Has been inserted. In the figure, 20 is a terminal attached to the resistance substrate.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technique, the slits of the outer shaft are engaged with the slider receivers of both the large rotary variable resistor and the small rotary variable resistor. Since the slit is long and therefore the slit twists when operating the outer shaft, the rotation angle of the slider bearing of the large rotary variable resistor and the slider bearing of the small rotary variable resistor deviate and the performance is improved. There was a problem that it caused trouble. Further, since the slit of the outer shaft is long, the slit is easily deformed during assembly or during transportation of the outer shaft alone, which causes a problem in product quality. Also, since the rotation stopper is provided on the slider receiver made of synthetic resin,
The strength was weak and hindered the miniaturization of all parts. Furthermore,
The outer shape of a small rotary variable resistor was restricted by the diameter of the outer shaft, and it was difficult to downsize it.

SUMMARY OF THE INVENTION Therefore, in view of the above problems of the prior art, it is an object of the present invention to provide a small-sized multi-spindle multiple rotary electric component having high precision and sufficient strength.

[Means for Solving the Problems] In order to solve the above problems, the present invention is formed by laminating an inner shaft, a hollow outer shaft formed around the inner shaft, and an axial direction of the outer shaft. And in a multi-spindle rotary electrical component having a rotary electrical component rotatable by the shaft, an operating portion is provided at one end of the hollow outer shaft inserted into the rotary electrical component, and the other end is provided at the other end. Connects a hollow and annular connecting member to the outer shaft so as to be rotatable around the inner shaft, locates the connecting member between the plurality of rotary electric components, and connects the rotary member to the rotary electric component. A rotation stopper for the component is provided, a rotary electric component on the side closer to the operating portion is rotatably engaged with the outer shaft, and a rotary electric component on the side farther from the operating portion is attached to the connecting member. It was rotatably engaged together.

[Embodiment] FIG. 1 is a cross-sectional view showing a rotary variable resistor having multiple axes and multiples, which is an embodiment of the present invention. In the following description of the present embodiment, the same parts as those in the above-described conventional example are designated by the same reference numerals and the description thereof will be omitted.

The main difference between this embodiment and the conventional example is that a hollow connecting member is provided at the tip of the small-diameter portion of the outer shaft, and the slider receiver of a small rotary variable resistor is connected as described above. The outer shaft is rotated by a member so that the slider bearing of the large rotary variable resistor and the connecting member are rotated, so that the small diameter portion of the outer shaft is short and the slit is short. There is a point.

In the figure, 27 is a hollow outer shaft, which is composed of a large-diameter portion 27a and a small-diameter portion 27b, a groove 27f is formed in the small-diameter portion 27b, and a C ring 31 is attached to the groove 27f. It is fixed so that it cannot be removed from the bearing 15. The small diameter portion 27 of the outer shaft 27
Two slits 27c are formed in the axial direction at the end of b. Reference numeral 22 is a slider holder for the large rotary variable resistor 2, the outer shaft 27 is inserted through a central hole, and the engaging protrusion 22a on the inner surface of the hole is inserted into the slit 27c of the outer shaft 27. The outer shaft 27 is engaged with and rotated integrally with the outer shaft 27.
Reference numeral 30 denotes a hollow connecting member made of, for example, zinc die cast, and an engaging protrusion 30a that engages with the slit 27c of the outer shaft 27 is formed at one end, and the outer diameter of the other end is the outer diameter. Slit 30 with dimensions less than the outer diameter of the shaft
c is formed, and the rotation stopper 3
0b is formed to project. Reference numeral 24 denotes an insulating case of the large rotary variable resistor 2, and a storage portion 24a for storing the rotation stopping portion 30b of the connecting member 30 is provided between the resistance substrates 10 and 11, and a side wall of the storage portion 24a. An anti-rotation convex portion 24b is provided on the shaft, and contacts the anti-rotation portion 30b of the connecting member 30 to regulate the rotation range of the outer shaft 27. 29 is a slider holder for the small rotary variable resistor 1 and has a hollow shaft portion 29.
An engaging protrusion 29b provided at one end of the shaft portion 29a, which is composed of a and a disk-shaped slider attachment portion provided at the center of the shaft portion.
Are engaged with the slits 30c of the connecting member 30, and both ends of the central portion of the shaft portion 29a having a large outer diameter are on the surfaces of the resistance substrates 3 and 4, and portions having a small outer diameter of both ends are the resistance substrate. It is supported by the central holes 3 and 4, and is rotatable integrally with the connecting member 30 and integrally with the outer shaft 27. The outer diameter of one end of the connecting member 30 that engages with the slider receiver 29 is less than or equal to the outer diameter of the outer shaft 27, and therefore the diameter of the shaft portion 29a of the slider receiver 29 is reduced. As a result, the diameter of the central hole of the resistance boards 3 and 4 can also be reduced, and the resistors on the resistance boards 3 and 4 can be made to have a wide width and allowance. Alternatively, the small rotary variable resistor 1 itself can be further downsized.

A continuous hollow portion formed by the outer shaft 27, the connecting member 30, and the hollow portion of the slider receiver 29 of the small rotary variable resistor 1 has an operating portion 32a having a large diameter at one end. A shaft portion 32 whose center is a diameter inserted and housed in the hollow portion of the outer shaft 27
b, an inner shaft 32 having a small diameter portion (not shown), the other end of which is inserted into the connecting member 30 and the slider receiver 29, is inserted, and the end portion of the small diameter portion of the inner shaft 32 is the slide member. It is possible to adjust an electric component (not shown) located on the left side of the small rotary resistor 1 so as to project from the armature receiver 29.

In the above embodiments, the rotary electric component is a variable resistor, but the rotary electric component is not limited to this, and it may be a switch or a combination of a variable resistor and a switch.
Still another component may be used.

[Advantages of the Invention] As described above, the present invention is a rotary electric machine that is formed by laminating an inner shaft, a hollow outer shaft formed around the inner shaft, and the axial direction, and is rotatable by the shaft. In a multi-spindle multiple rotary electrical component having a component, an operating portion is provided at one end of the hollow outer shaft that is inserted into the rotary electrical component, and the other end is hollow and annular around the inner shaft. A connecting member is rotatably connected integrally with the outer shaft, the connecting member is positioned between the plurality of rotary electric parts, and the connecting member is provided with a rotation stopper for the rotary electric part. Is rotatably engaged integrally with the rotary electric component on the side closer to the operating portion, and the connecting member is rotatably engaged with the rotary electric component on the side farther from the operating portion.
By operating the hollow outer shaft formed around the inner shaft, it is possible to operate the rotary electric component on the side closer to the operating unit and the rotary electric component on the side farther from the operating unit. It can be used for operation.

Further, since the outer shaft can be formed shorter than the conventional one by extending it to the rotary electric component on the near side, the outer shaft is less likely to be deformed, and the hollow connecting member has an annular shape. There is little deformation of the part itself. Further, since the rotation stopper of the rotary electric component is provided on the connecting member, the load acting on the rotation stopper can be applied by the connection member, and the load can be applied to the rotary electric component on the side far from the operating portion. It is possible to suppress the amount of deformation of the outer shaft as compared with the case where the action is performed. Therefore, according to this configuration, it is possible to prevent a deviation in the rotation angle between the rotary electric component on the side closer to the operating portion and the rotary electric component on the side farther from the operating portion, and to provide a highly reliable rotary electrical component.

[Brief description of drawings]

FIG. 1 is a sectional view showing a multi-axis multiple rotary variable resistor which is one embodiment of the rotary electric component of the present invention, and FIG. 2 is a conventional multi-axis multiple rotary variable resistor. It is sectional drawing which shows a container. 1: Small rotary variable resistor (rotary electrical component) 2: Large rotary variable resistor (rotary electrical component) 17, 27: Outer shaft, 17a, 27a: (Outer shaft) operating part 17c, 27c: Slits (outer shaft) 12, 22: Slider receiver (for large rotary variable resistor) 9, 29: Slider receiver for small rotary variable resistor 29b: Engagement protrusion , 30: Connection member 30a: Engagement protrusion, 30b: Rotation stop portion 30c: Slit (of connection member) 24: Insulation case, 24b: Rotation stop protrusion 19, 32: Inner shaft

Claims (1)

[Scope of utility model registration request] 1. An inner shaft for operating an electric component, a hollow outer shaft formed around the inner shaft, a hollow outer shaft laminated in the axial direction of the outer shaft and formed around the inner shaft. In a multi-spindle rotary electrical component having a plurality of rotary electrical components provided with a slider receiver that can be rotated by an outer shaft, one end of the hollow outer shaft inserted into the rotary electrical component. An operating portion is provided on the other end, a slit is provided on the other end, a hollow annular connecting member is further provided around the inner shaft, and the engaging projection provided on the connecting member is engaged with the slit on the outer shaft. , The connecting member and the outer shaft are rotatably connected integrally, the connecting member is positioned between the plurality of rotary electric components, and the connecting member is provided with a rotation stopper for the rotary electric component, Engages with the sliding element receiver of the rotating electrical parts near the operating part Providing a convex portion, the engaging convex portion is engaged with the slit of the outer shaft to be integrally rotatable, and is further used as a slider receiver of a rotary electric component on a side far from the connecting member and the operating portion. An engaging convex portion and a slit that engages with the engaging convex portion are provided, and the connecting member and the rotary electric component on the side far from the operating portion are integrally rotatable. Rotating electric parts.