JPH0713015U - Rotational positioning device for rotating body - Google Patents

Abstract

(57) [Abstract] [Purpose] A circular body is fixed to a spindle of a rotating body such as an operation knob, and a concave portion formed on the inner peripheral surface of the circular body and a thrust force for the concave portion provided on the machine body. The click stop mechanism is configured with the small spheres that have been given, and in the rotary positioning device that determines the rotational position of the rotating body by this click stop mechanism, the small spheres are prevented from jumping out during assembly work, and the assembly work efficiency of each part is improved. To let. [Structure] Before fixing the circular body 60 having a groove on the inner peripheral surface to the support shaft 50a of the operation knob 50, a small hole 61d of the circular body 60 is formed in a bottomed hole 57a provided in the panel body 54. The spring 58 and the small ball 59 are pushed from the outside of the circular body 60 into the bottomed hole 57a through the small hole 61d from the outside of the circular body 60. Then, the circular body 60 is rotated so that the small hole 61d and the bottomed hole 57a are not communicated with each other, and the circular body 60 is fixed to the spindle 50a of the operation knob 50. The operation knob 50 is configured to rotate within a predetermined range in which the small hole 61d and the bottomed hole 57a do not communicate with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary position determining device for a rotary body which is used for a rotary operation knob for selecting an outlet provided on a switch panel of an automobile and a rotary operation knob for a rotor switch.

[0002]

[Prior art]

 The switch panel of the automobile is equipped with an operating knob for temperature adjustment and an operating knob for selecting the outlet. Then, the rotation positions of these operation knobs are determined by a click stop mechanism. In other words, a circular body that rotates integrally with the support shaft of the operation knob is attached, and the click top consists of a small ball that is provided to give a protruding force to the panel body and a groove that is provided on the inner peripheral surface of the circular body. The click stop mechanism positions the rotary position of the operation knob.

FIG. 6 shows a rotary positioning device which is the above-mentioned click stop mechanism, and 10 is a bearing portion of the switch panel body, and a spindle 11 of an operation knob is rotatably attached to the bearing portion 10. Above the bearing portion 10, there is provided a protruding portion 12 which is integrally formed with the bearing portion 10 and is formed on the back surface of the switch panel body. A small hole 12a directed toward the support shaft 11 of the operation knob is formed in the protruding portion 12, and a spring 13 and a small ball 14 to which a protruding force is applied by the spring 13 are provided in the small hole 12a. ing.

A circular body 15 is fixed to the support shaft 11 of the operation knob so as to rotate integrally with the operation knob. On the inner peripheral surface 15a of the circular body 15, small recessed grooves 15b as shown in the drawing are formed at five positions along the inner peripheral surface.

A flange 15c is formed on the circular body 15, and a cutout portion 15d is formed at two places on the flange 15c as shown in the figure. The cutout portion 15d is fitted with the hook portion 16 provided on the switch panel body, and then the circular body 15 is rotated so that the flange 15c engages with the hook portion 16 so that the circular body 15 is formed. The circular body 15 is temporarily fixed to the switch panel body to prevent the circular body 15 from being detached from the switch panel during assembly work.

When the circular body 15 is attached to the support shaft 11 of the operation knob, its rotational position is predetermined and the circular body 15 is attached. That is, a groove is formed in advance on the support shaft 11 of the operation knob, and a protrusion that engages with the groove is formed on the bearing of the circular body 15, whereby the circular body 15 is rotated at the rotational position shown in FIG. Is fixed to the support shaft 11 of the operation knob.

In the state shown in FIG. 6, the operation knob has its rotation operation range defined so that it can be rotated 180 degrees counterclockwise. That is, a rotation range restriction mechanism of the operation knob is provided between the operation knob support shaft 11 and the switch panel body by a known means.

In this rotational positioning configuration, the click stop mechanism formed by the small ball 14 provided on the switch panel body and having the protruding force and the concave groove 15b of the circular body 15 rotates the operation knob. It works in 5 places, gives a moderation when operating the operation knob, and determines the rotation position of the operation knob.

[0009]

[Problems to be solved by the device]

 The rotary positioning device as described above has a problem in that the small spheres 14 may protrude from the small holes 12a of the projecting portion 12 when the circular body 15 is attached, which hinders the work.

That is, when mounting the circular body 15, the spring 13 and the small ball 14 are mounted on the support shaft 11 of the operation knob while pushing the spring 13 and the small ball 14 into the small hole 12a of the projecting portion 12. Since the rotational position of 15 must be determined and attached in advance, it is not easy to assemble the operation knob, circular body, etc., resulting in a rotational positioning device with extremely poor assembly work efficiency.

In view of the above situation, an object of the present invention is to develop a rotary positioning device for a rotating body such as an operating knob that can prevent small balls from popping out and greatly improve the efficiency of assembly work.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a circular body fixed to a spindle of a rotating body attached to the machine body so as to rotate within a predetermined range, and formed on the inner peripheral surface of the circular body. In a rotary positioning device that determines the rotational position of a rotating body by a click stop mechanism that is composed of a concave groove and a small ball that projects from a small hole provided in the machine body with spring force, a small device that can communicate with the small hole of the machine body A hole is provided in a circular body, and the small ball and the spring described above are connected from the outside of the circular body by connecting the two small holes, and then the circular body is rotated so that the two small holes do not communicate. The rotating body is characterized in that the circular body is fixed to the support shaft of the rotating body under this non-communication so that the rotating body is rotated and positioned within a predetermined range where the two small holes do not communicate with each other. We propose a rotary positioning device.

[0013]

[Action]

 This rotary positioning device makes the small hole of the circular body communicate with the small hole of the machine body before fixing the circular body to the support shaft of the rotating body. Then, in this state of communication, the spring and the small ball are pushed into the small hole of the machine body from the outside of the circular body.

After pressing the spring and the small sphere, the circular body is rotated so that the two small holes do not communicate with each other. As a result, the small spheres, to which the projecting force is applied by the spring, are pressed against the inner surface of the circular body and are prevented from popping out.

After that, the rotational positions of the circular body and the rotary body are determined, and the circular body is fixed to the spindle of the rotary body. That is, when the rotating body rotates within a predetermined range, the circular body is stopped on the spindle of the rotating body at the mutual rotating position of the rotating body and the circular body so that the two small holes described above do not communicate with each other. To wear.

The rotary positioning device configured as described above is configured such that the rotating body rotates within a predetermined range by the click stop mechanism including the concave portion formed on the inner peripheral surface of the circular body and the small ball protruding from the small hole of the body. During the rotation, the moderation is given and the rotation is positioned.

[0017]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a switch panel of an automobile equipped with a rotary positioning device for a rotating body according to the present invention, and FIG. 2 is a simplified sectional view of the switch panel. The operation knob 50, which is a rotating body, comprises a support shaft 50a and an operation portion 50b, and a projection piece 50c for defining a rotation range is formed on the support shaft 50a as shown in FIG.

In addition, a fitting hole (not shown) is formed inside the support shaft 50a along the axis from the tip end surface thereof, and a single groove 50d is provided on the outer surface.

Reference numeral 51 is a thin plate-shaped display plate having a symbol mark on its surface, 52 is a panel plate having a fitting recess 52a into which the display plate 51 is fitted, and 53 is light projected from the inside of the switch panel. The light guide lens for irradiating the symbol mark of the display plate 51 with the reflected light, 54 is a panel main body having a fitting recess 54a for fitting the light guide lens 53, and the panel main body 54 supports the operation knob 50. A cylindrical bearing portion 55 for bearing the shaft 50a is integrally provided.

A cutout 55a is formed in the bearing portion 55 described above, and the cutout 55a engages with the protruding piece 50c of the operation knob 50 to define the operation knob 50 within a 180-degree rotation range.

A plate 56 and a protrusion 57 are integrally formed on the back surface of the panel body 54. The protruding portion 57 is provided directly above the bearing portion 55 and has a bottomed hole (small hole) 57a facing the support shaft direction of the operation knob 50. The bottomed hole 57a has a spring 58 as shown in the figure. And a small ball 59 are provided. The small ball 59 is provided by a spring 58 so as to project from the bottomed hole 57a, and is fitted into a groove of a circular body 60 described later to form a click stop mechanism.

A large-diameter through hole 51a into which a part of the operation knob 50 is fitted is formed in the display plate 51, and the panel plate 52 communicates with the through hole 51a of the display plate 51. A through hole 52b having a smaller diameter than the through hole 51a is formed.

The light guide lens 53 is formed with a circular notch 53 a that fits with the bearing 55 formed in the panel body 54, and the panel body 54 is provided with a shaft hole 54 b penetrating the bearing 55. Has been formed.

The display plate 51 is fitted into the fitting recess 52 a of the panel plate 52, and the light guide lens 53 is fitted into the fitting recess 54 a of the panel body 54. Then, the locking claws 52c provided on the upper and left sides of the panel plate 52 are locked to the locking holes 54c of the panel body 54, and the panel plate 52 is attached to the panel body 54.

In the switch panel thus formed, the through hole 51a of the display plate 51, the through hole 52b of the panel plate 52, the cutout portion 53a of the light guide lens 53 and the shaft hole 54b of the panel body 54 are communicated with each other to support the shaft. It becomes the insertion hole of 50a.

The circular body 60 is composed of an annular portion 61 and a bottom surface portion 62. The annular portion 61 is provided with a flange 61a having a notch 61b as shown in FIG. On the peripheral surface, five mountain-shaped concave grooves 61c that form a click top mechanism with a spring 58 provided in a bottomed hole 57a of the protrusion 57 and a small ball 59 are formed on the semicircular side.

A small hole 61d is provided in the annular portion 61. As shown in FIG. 4, the small hole 61d has a diameter that allows the spring 58 and the small ball 59 to pass therethrough. Further, the small hole 61d can communicate with the bottomed hole 57a of the protrusion 57 when the circular body 60 is temporarily fixed to the panel body 54 with the protrusion 57 inside.

A bevel gear 62a is formed so as to project on the bottom surface portion 62 of the circular body 60, and a shaft hole 62b that pivotally supports the support shaft 50a is formed in this bevel gear 62a. Further, the shaft hole 62b of the bevel gear 62a is formed with a protrusion 62c which fits into a groove 50d formed in the support shaft 50a of the operation knob 50.

The protrusion 62c is used to determine the rotational position of the circular body 60 when the circular body 60 is mounted on the support shaft 50a, and to mount it when the operation knob 50 is rotated within a range of 180 degrees. The circular body 60 rotates in the range B shown in FIG. 5 so that the five chevron-shaped grooves 61c are engaged with the small balls 59. The rotation range of the operation knob 50 is determined by the protrusion 50c and the notch 55a of the bearing 55.

On the other hand, a plate 56 on the back surface of the panel body 54 is provided with a mounting hole 56a of a circular body 60, and the operation knob 50 is rotatably supported on the rear side of the mounting hole 56a. A shaft protrusion 56b is provided. Further, hooks 56c for temporarily fixing the circular body 60 to the panel body 54 are provided on the front side portions of both sides of the mounting hole portion 56a.

In the above structure, first, the circular body 60 is attached to the back side of the panel body 54. First, as shown in FIG. 3, the circular body 60 is pressed against the back surface of the panel body 54 by aligning the notches 61b of the flange 61a with the hooks 56c provided on both sides of the mounting hole 56a. Then, as shown in FIG. 4, the circular body 60 is rotated so that the small hole 61d faces the bottomed hole 57a of the protrusion 57. When the circular body 60 is rotated, the flange 61a of the circular body 60 is locked between the panel body 54 and the hook 56c, and the circular body 60 is temporarily fixed to the switch panel.

After the small hole 61d and the bottomed hole 57a are communicated with each other, the spring 58 and the small ball 59 are pushed into the bottomed hole 57a from the outside of the circular body 60 through the small hole 61d. The small balls 59 are projected from the small holes 61d by the projecting force of the springs 58, and the small balls 59 are pushed into the bottomed holes 57a with the fingertips to rotate the circular body 60 again.

By this rotation, the small hole 61d is moved so as not to communicate with the bottomed hole 57a, and the small ball 59 having a projecting force is pressed against the inner surface of the circular body 60. In this state, the small balls 59 are prevented from protruding from the bottomed holes 57a.

FIG. 5 shows a state in which the circular body 60 is rotated and the small ball 59 is engaged with the first chevron-shaped groove 61 c of the circular body 60 and click-stopped.

In the state shown in FIG. 5, the operation knob 50 is attached to the switch panel. The support shaft 50a of the operation knob 50 is inserted through the insertion hole formed in the switch panel, the groove 50d is aligned with the protrusion 62c, and the operation knob 50 is pushed in. The circular body 60 has its shaft hole 62b axially supported by the support shaft 50a and is integrally mounted. In the rotated state of the circular body 60 shown in FIG. 5, the protrusion 62c is located on the right side, and the operation knob 50 is rotated 180 degrees counterclockwise (turned 45 degrees to the left from the state of FIG. 1). (State), the support shaft 50a is inserted into the shaft hole 62b.

When the operation knob 50 is pushed further, the protruding piece 50c formed on the support shaft 50a enters into the notch 55a of the bearing portion 55, and the pushing in the axial direction is prevented. At the same time, the shaft protrusion 56b of the mounting hole 56a is inserted into a fitting hole (not shown) formed at the tip of the support shaft 50a, and the operation knob 50 is rotatably mounted on the switch panel.

The operation knob 50 attached to the switch panel in this way can be rotationally operated with a predetermined range within which the protruding piece 50c moves in the notch 55a of the bearing 55. The knob 50 is click-stopped by rotating the knob 50 at the positions of the five mountain-shaped grooves 61c of the circular body 60.

As can be seen from the above, in this rotary positioning device, the spring 58 and the small ball 59 are pushed into the bottomed hole 57a of the projecting portion 57 by the small hole 61d of the circular body 60, and then the circular body 60 is rotated. In this case, the small sphere 59 is pressed against the inner surface of the circular body 60, and the small sphere 59 does not pop out from the bottomed hole 57a during the assembly process of the operation knob 50, the circular body 60, etc. Greatly improved. Further, once the operation knob 50 is attached to the switch panel, the small hole 61d and the bottomed hole 57a do not communicate with each other, and the small ball 59 is reliably prevented from popping out.

Although one embodiment of the present invention has been described above, the rotation range of the operation knob 50 is not necessarily determined by the protrusion 50c and the notch 55a of the bearing 55, but may be, for example, supported. A groove having a predetermined length is provided in the tip end portion of the shaft 50a in the direction around the axis, and a projecting portion projecting into the groove is provided on the plate 56 to determine the rotation range thereof, and the bevel gear 62a. The operating range of the lever or the like interlocking with and interlocking with may be set to a predetermined range, and the rotation range of the operation knob 50 may be set.

The present invention is not limited to the rotary positioning device for the operation knob of the switch panel for automobiles, and can be implemented as a rotary positioning device for other rotating bodies that rotate within a predetermined range.

[0041]

[Effect of device]

 As described above, the rotary positioning device for a rotating body according to the present invention, before the circular body is fixed to the spindle of the rotating body, the spring and the small ball are inserted into the small hole of the body from the small hole of the circular body. After that, the circular body is rotated so that the above two small holes are not communicated, and the circular body is fixed to the spindle of the rotating body at this rotation position. The rotating body that rotates within a predetermined range in which the two small holes do not communicate with each other is reliably positioned by the click stop mechanism that is formed by the concave portion on the circular inner surface of the body and the small ball.

Since the circular body, the spring, the small sphere and the rotating body can be assembled separately, the assembling work is simplified and the rotating body is extremely advantageous for improving the work efficiency. It becomes the rotary positioning device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example in which the present invention is applied to an operation knob of an automobile switch panel.

FIG. 2 is a schematic sectional view of the switch panel.

FIG. 3 is an enlarged cross-sectional view of a part of the panel body and a circular body attached to the panel body.

FIG. 4 is an enlarged cross-sectional view showing a cross section of a part of the panel body and a circular body assembled to the panel body, showing an assembled state of small balls and springs.

FIG. 5 is an enlarged cross-sectional view showing a cross section of a part of the panel body and a circular body assembled to the panel body, showing a state after the small balls and the spring are assembled.

FIG. 6 is an enlarged sectional view similar to FIG. 5 shown as a conventional example.

[Explanation of symbols]

 50 Operation Knob 50a Spindle 50c Projecting Piece 54 Panel Body 55 Bearing 55a Notch 57 Projecting 57a Bottomed Hole 58 Spring 59 Small Ball 60 Circular Body 61 Circular Ring 61c Mountain-Shaped Groove 61d Small Hole

Claims (1)

[Scope of utility model registration request] 1. A circular body is fixed to a spindle of a rotating body attached to the machine body so as to rotate within a predetermined range, and a concave groove formed on an inner peripheral surface of the circular body and the machine body are provided. In a rotary positioning device that determines the rotational position of the rotating body by a click stop mechanism that is composed of a small ball protruding from the small hole with spring force, a small hole that can communicate with the small hole of the machine body is provided in a circular body, After inserting the above-mentioned small ball and spring into two circular holes and inserting them from the outside of the circular body, the circular body is rotated to make the two small holes non-communicative. A rotary positioning device for a rotary body, wherein the rotary body is fixed to a spindle of the rotary body, and the rotary body is rotated and positioned within a predetermined range in which the two small holes do not communicate with each other.