JPH0512814Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a knob device for use in an element such as a dual-shaft switch or volume.

Prior Art Conventionally, there are two main types of dual axis knob devices used as time axis knobs of oscilloscopes.

The first type of knob device is of the well-known two-tier arrangement. That is, the outer shaft knob is arranged on the side closer to the panel, and the center shaft knob is simply placed on top of this outer shaft knob. In such a two-tiered knob device, for example, finger lines are provided at the base of each knob near the panel.

Another second type of knob device has a sub-panel showing letters (numbers indicating the sweep speed value). That is, a sub-panel member fixed to the panel is installed inside the outer shaft knob, and the top surface of the outer shaft knob is made transparent, so that when the knob device is viewed from the front of the panel, the outer shaft knob and The structure is such that the annular part of the sub-panel can be observed between the central axis knob and the center knob. The annular portion of this sub-panel has letters arranged in a circumferential direction. Therefore, for the outer shaft knob and the center shaft knob,
Finger lines are provided at locations adjacent to this annular portion.

Problems to be Solved In the conventional first type two-tiered knob device described above, the positional relationship between the finger line of the central knob and the panel character it points to changes greatly depending on the direction from which the panel is viewed. Therefore, it is inconvenient to read, and reading errors may occur. The reason for this is that, as can be seen, the finger line of the outer axis knob is close to the panel characters, but the finger line of the center axis knob is separated from the panel characters by the height of the outer axis knob.

Furthermore, in the second type of sub-panel type knob device, the knob device occupies a large space on the panel surface, which impedes miniaturization of the knob device and, by extension, miniaturization of the device. Specifically, the outer diameter of the outer shaft knob increases by at least the width of the annular portion of the sub-panel with the letters attached. Further, this type of knob device has a sub-panel member inside the outer shaft knob, which makes the structure complicated and increases the number of parts, leading to an increase in cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a knob device for a dual-axis element that has a simple structure and allows accurate reading of scales or characters at the knob positions of two knobs.

Means for Solving the Problems In order to achieve the above object, a knob device for a dual-axis element having a coaxial outer shaft and a center shaft attached to a panel according to the present invention is provided with an outer shaft attached to the outer shaft. and a center shaft knob attached to the center shaft. The outer shaft knob is a first cylindrical member that extends in the axial direction of the outer shaft from one end near the panel to the other end far from the panel, and has an outer peripheral surface and an inner peripheral surface that fits into the outer shaft. and a second cylindrical member extending in the axial direction of the outer shaft from one end near the panel to the other end far from the panel, the second cylindrical member having an outer peripheral surface and an inner surface. the second cylindrical member having a circumferential surface; and a coupling member for coupling the first cylindrical member to the second cylindrical member, the outer periphery of the first cylindrical member; the connecting member defining a space between the surface and the inner circumferential surface of the second cylindrical member, the space being open in the front direction of the panel and extending close to the surface of the panel; There is.

The center shaft knob is a cylindrical member extending in the axial direction of the center shaft from one end close to the panel to the other end far from the panel, and has an outer peripheral surface and an inner peripheral surface that fits into the center shaft. The cylindrical member and an extension member extending in the axial direction of the center shaft, the base of which is connected to the cylindrical member, and which extends from the cylindrical member into the space of the outer shaft knob. the extension member extending toward the panel and having a distal end thereof proximate a surface of the panel within the space.

The knob device of the present invention further includes: a first instruction provided near at least one end of the second cylindrical member of the outer shaft knob for indicating the position of the outer shaft knob; a second instruction provided near at least the tip of the extension member for indicating the position of the center shaft knob; The part covering the second instruction is transparent.

Further, in the knob device of the present invention, the extension member may be made of a cylindrical member or an elongated member.

Furthermore, in the knob device of the present invention, the entire outer shaft knob may be made transparent.

In addition, in the knob device of the present invention, the outer shaft knob is provided at an angular position corresponding to the first instruction in the vicinity of the other end of the second cylindrical member. The central shaft knob may include a third instruction for indicating the
A fourth instruction may be provided on the outer peripheral surface of the cylindrical member to indicate the position of the center shaft knob provided at an angular position corresponding to the second instruction.

Furthermore, in the knob device of the present invention, the first and second instructions are respectively finger lines, and the panel includes a series of characters arranged adjacent to the outer periphery of the outer axis knob; A scale consisting of radial line segments may be attached to each of the letters, and each of the radial line segments may have an inner end extending close to the tip of the extended portion of the center shaft knob.

Function In the knob device configured as described above, the tip of the extension member of the center shaft knob, that is, the part provided with the instruction, can be located near the panel surface through the space provided in the outer shaft knob, and this part can be seen through the transparent part from the outside of the outer shaft knob. This acts to make the distance between the center knob and the panel approximately the same as the distance between the outer shaft knob and the panel.

Embodiment Next, an embodiment in which the present invention is applied to a dual-axis time axis knob device of an oscilloscope will be described with reference to the drawings.

1, 2, and 3 show an exploded view and a dual axis time axis knob device 1 having two axes for normal sweep (outer axis) and delayed sweep (center axis), respectively. It is shown in a mounting diagram and a cross-sectional view.

As can be seen from FIG. 1, the present knob device 1, which is attached to a double-axis switch 20 attached to a panel 10, includes an outer-axis knob 30 and a center-axis knob 40.

A circular opening 1 is provided in the panel surface 12 of the panel 10.
4 is provided. Around this opening 14, a string of characters 16 is provided as an instruction to indicate the position of the knob.
are arranged or attached along the circumference of a circle larger than the outer diameter of the outer shaft knob 30. This string 16
The characters are numbers indicating the sweep speed value, respectively.
It is arranged at an angular position corresponding to the stop position of the switch 20 in the rotational direction.

The double shaft switch 20 has an outer shaft 22 that is coaxial.
and a center shaft 24, the base of which is connected to the bolt 2.
6 and is fixed in the opening 14 to the panel 10. The shafts 22, 24 are generally cylindrical or cylindrical in shape and extend forwardly from the panel surface 12. Outer shaft 22 has an outer circumferential surface 226 extending from base 222 to tip 224, which is generally cylindrical. Similarly, the center shaft 24 also has a cylindrical outer peripheral surface 24 extending from the base 242 to the tip 244.
I have 6. Although not shown, these outer peripheral surfaces 226 and 246 are provided with means for fixing the outer shaft knob and the center shaft knob, respectively.For example, the outer peripheral surface 226 has two opposing positions on the circumference. a rectangular groove (not shown) on the outer peripheral surface 2.
46 has a number of grooves (not shown) cut therein.

Next, the outer shaft knob 30 is fitted onto the outer shaft 22.
is made from transparent plastic material. The outer shaft knob 30 is roughly composed of an inner cylindrical portion 32, an outer cylindrical portion 34, and a connecting portion 36 (see FIG. 3) that connects these to each other.

This inner cylindrical portion 32 is shown in FIG.
As can be seen from the cross-sectional view along
It has a generally cylindrical shape extending from 22 to a tip 324 and has an outer circumferential surface 326 and an inner circumferential surface 328. Two rows of rectangular protrusions (not shown) that engage with the aforementioned rectangular grooves (not shown) are provided on this inner circumferential surface.

The outer cylindrical portion 34 is located around the inner cylindrical portion 32 and spaced therefrom. The outer tubular portion 34 has a generally cylindrical shape extending from a base 342 to a distal end 344 with a distal forward portion 346
It consists of two parts: and a rear part 348 on the proximal side. The front portion 346 is a generally cylindrical portion extending halfway from its distal end 344 toward the base 342, has an inner circumferential surface 350 common to the rear portion 348, and has an outer circumferential surface 352 that is This is the part that tapers toward the front for pinching.
The rear portion 348, on the other hand, is a fully cylindrical portion extending from the rear end 354 of the front portion 346 to the base 342, and thus has a common inner circumferential surface 350 and a concentric outer circumferential surface 356.

This outer cylindrical portion 34 is provided with two finger line portions for indicating the current position of the outer shaft switch, that is, for indicating the knob position. One is the base 34 of the rear portion 348
2, and the other is a rectangular groove 358 extending forward from the forward portion 34 at the same rotational position.
A circular depression 36 provided in the plane of the tip 344 of 6
It is 0. The rectangular groove 358 becomes an effective finger line when the panel is viewed from the side away from the front direction, while the circular recess 360 makes the finger line of the rectangular groove invisible when the panel is viewed from the front direction. Works as an auxiliary guide. These finger lines are
Preferably, it is colored so that it can be identified.

As can be seen from FIG. 3, the connecting portion 36 that connects the inner cylindrical portion 32 and the outer cylindrical portion 34 is formed of an annular disk. This coupling portion 36 couples the base 322 of the inner cylindrical portion 32 with the base 342 of the outer cylindrical portion 34 to form a cylindrical space 38 therebetween. This space 38 is open at the front and closed at the rear, so that the panel surface 1
It extends to almost 2. In addition, in this space 38, the radial dimension including the distance between the outer circumferential surface 326 of the inner cylindrical portion 32 and the inner circumferential surface 350 of the outer cylindrical portion 34 is the rearward extension of the center shaft knob 40, which will be described later. It is designed so that the parts can be rotatably accommodated.

Next, the center shaft knob 40 will be explained. The center knob 40 is preferably made of an opaque plastic material and consists of a front cylindrical portion 42 and a rear extension 44. First, the front cylindrical portion 42 is connected to the base 422.
a generally cylindrical portion extending from the base 422 to near the tip 424, an inner circumferential surface 426 that fits into the central shaft 24, and an outer circumferential surface 428 tapered to be pinched by hand; have. On the other hand, the rear extension 44 has a base 44 connected near the base of its front tubular portion 42.
2 to the panel-side tip 444. Tip 444 is located proximate coupling portion 36 . The outer peripheral surface 446 of the extension 44 is inside the inner peripheral surface 350 and the inner peripheral surface 448 of the extension is outside the outer peripheral surface 326.

As with the outer shaft knob, the center shaft knob 42 described above also has instructions for indicating the knob position.
Two finger line parts are provided. One is a rectangular groove 450 extending forward from the tip 444 on the outer circumferential surface 446 of the extension portion 44, and the other is a rectangular groove 450 extending forward from the tip 444 on the outer circumferential surface 446 of the front cylindrical portion 42.
This is a rectangular protrusion 430 extending toward the panel.
These rectangular grooves 450 and rectangular protrusions 430 serve as finger lines when viewed from the side and auxiliary finger lines when viewed from the front, respectively, as in the case of the outer shaft knob. Similarly, it may be colored for easy identification.

Next, the mounting state of the knob device 1 and its function will be explained with reference to FIGS. 2 and 3.

As can be seen from Figure 2, in the mounted state,
The finger line part of the rectangular groove 450 of the center shaft knob 40 is close to the finger line part of the rectangular groove 358 of the outer shaft knob 30 in the radial and axial directions, and both are close to the panel surface 12 and its character string 16. It will be located in As mentioned above, since the outer axis knob is transparent, the rectangular groove finger line part of the center axis knob can be seen from the outside, and therefore the positional relationship between the finger line part and the characters can be easily known. Furthermore, if the finger lines of the rectangular grooves are difficult to see when viewing the knob from the front, the positional relationship between the finger lines and the characters can be read using the auxiliary finger lines of the circular recess 360 and the rectangular protrusion 430. I can do it.

The following modifications can be made to the embodiment of the present invention described above.

First, the extension portion 44 of the central shaft knob is primarily provided to provide the finger line portion 450, and therefore does not need to be a perfect cylinder. Therefore, the center shaft knob 40 in FIG. 1 can have an elongated shape as shown by the dashed line. In this case, the shape of the space 38 of the outer shaft knob does not need to be a perfect cylindrical shape, but may be any shape that can ensure the necessary range of movement of the extended portion.

Second, the transparent portion of the outer shaft knob 30 may be made transparent only in a range sufficient to allow the finger line 450 of the center shaft knob 40 to be seen. Therefore, for example, only the rear portion 348 of the outer shaft knob may be made transparent. This can be achieved, for example, by coloring or by using different materials.

Thirdly, the knob device of the present invention can also be applied to electric elements such as dual-shaft volumes.

Fourth, in addition to the character string 16 on the panel surface 12,
As shown in FIG. 4, a radial line segment scale 18 can be added to the axis. Each line segment extends radially inward from the corresponding character, with its inner end 19 extending from the base 4 of the extension 44 of the center knob 40.
44 near the outer periphery. By this,
The positional relationship between the finger line of the center axis knob and the characters can be made clearer.

Finally, in the above embodiment, letters (or scales) are provided on the panel side and finger lines are provided on the knob side as a pair of instructions for indicating the knob position.
However, on the contrary, as a pair of instructions,
It is also possible to provide one finger line on the panel side and a series of letters (or scales) on the knob side. In other words, a series of letters (or scales) are attached to the outer peripheral surface near the base of the outer cylindrical part of the outer shaft knob in the circumferential direction, and a series of letters (or scales) are attached to the outer circumference near the tip of the extended part of the center shaft knob by affixing them in the axial direction. A series of letters (or scales) may also be provided on the surface in the same circumferential direction. In this case, another finger line 360 of the outer shaft knob is
Changed to a series of letters (or scale) provided in the circumferential direction on or near the tip 344 of the outer cylindrical part,
Further, the other finger line 430 of the center axis knob may be changed to a series of letters (or scales) provided in the circumferential direction on or near the tip 424 of the front cylindrical portion.

Effects According to the dual shaft knob device of the present invention described above, the finger position of the center shaft knob can be read easily and accurately, and this can be provided with a simple structure and low cost.

[Brief explanation of the drawing]

FIG. 1 is an exploded view of a dual axis time axis knob device, which is an embodiment of the present invention. FIG. 2 is an implementation diagram of the knob device shown in FIG. 1. FIG. 3 is a sectional view taken along the line - in FIG. 2. FIG. 4 is an implementation diagram similar to FIG. 2 showing a modification of the present invention. Explanation of symbols, 1...Double axis type time axis knob device, 10...Panel, 12...Panel surface, 14...
...Aperture, 16...Character string, 18...Line segment scale,
19...Inner end, 20...Double shaft, 22...Outer shaft, 24...Center shaft, 30...Outer shaft knob, 32...
...Inner cylindrical part, 34...Outer cylindrical part, 36...Joining part, 38...Space, 358...Rectangular groove finger line part,
360...Circular depression finger line part, 40...Center shaft knob, 42...Front cylindrical part, 44...Rear extension part, 430...Rectangular projection finger line part, 450...Rectangular groove finger line part.

Claims (1)

[Claims for Utility Model Registration] 1. A knob device for use in a double-axis element having a coaxial outer shaft and a center shaft attached to a panel, and (a) an outer shaft knob attached to the outer shaft, which The outer shaft knob is a first cylindrical member that extends in the axial direction of the outer shaft from one end near the panel to the other end far from the panel, and has an outer peripheral surface and an inner peripheral surface that fits into the outer shaft. b) a second cylindrical member extending from one end near the panel to the other end far from the panel in the axial direction of the outer shaft, the second cylindrical member having an outer periphery; the second cylindrical member, the second cylindrical member having a surface and an inner circumferential surface, and c a coupling member for coupling the first cylindrical member to the second cylindrical member, The coupling member defines a space between the outer circumferential surface of the member and the inner circumferential surface of the second cylindrical member that is open in the front direction of the panel and extends close to the surface of the panel. (b) A central shaft knob attached to the central shaft, which is a cylindrical knob extending from one end close to the panel in the axial direction of the central shaft to the other end far from the panel. b) an extension member extending in the axial direction of the central shaft, the base of which is connected to the cylinder; The cylindrical member is connected to a cylindrical member, extends from the cylindrical member into the space of the outer shaft knob toward the panel, and has its tip located close to the surface of the panel within the space. , the extension member, and (c) a first instruction for indicating the position of the outer shaft knob provided near at least the one end of the second cylindrical member of the outer shaft knob. , D. A second indicator for indicating the position of the central shaft knob, provided near at least the tip of the extension member of the central shaft knob, and E. At least one of the second cylindrical members of the outer shaft knob. A knob device comprising: a portion covering the second instruction is transparent. 2. The knob device according to claim 1, wherein the extension member is made of a cylindrical member. 3. The knob device according to claim 1, wherein the extension member is an elongated member. 4. The knob device according to claim 1, 2, or 3, wherein the outer shaft knob is entirely transparent. 5. The knob device according to claim 1, wherein the outer shaft knob is provided at an angular position corresponding to the first instruction in the vicinity of the other end of the second cylindrical member. A third instruction for indicating a position is provided, and the center shaft knob is provided at an angular position corresponding to the second instruction on the outer circumferential surface of the cylindrical member. A knob device comprising a fourth instruction. 6. The knob device according to claim 1, wherein each of the first and second instructions is a finger line;
Further, the panel is provided with a series of letters arranged adjacent to the outer periphery of the outer axis knob, and a scale consisting of radial line segments is attached to each of the series of letters, and each radial line segment is , an inner end thereof extending close to the tip of the extended portion of the center shaft knob.