JP2013222308A - Rotation lever fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mainly prevent the wobbling of a shaft support part in a shaft line direction.SOLUTION: A shaft support part 2 includes: a shaft part 4 projected from a control lever 3; a shaft bearing cylinder part 5 projected from an attachment base material 1; a wobbling prevention part 11 in a shaft line direction comprising a projection part 7 extending in a circumferential direction 6 and a recessed groove part 9; and slit parts 12a, 12b provided in at least one of the shaft part 4 and the shaft bearing cylinder part 5. Further, in the control lever 3, after fitting the shaft part 4 with the shaft bearing cylinder part 5, an anti-loosening cylinder part 13 capable of preventing the loosening of the projection part 7 and the recessed groove part 9 due to deformation of the periphery of the slit parts 12a, 12b is provided.

Description

  The present invention relates to a rotating lever mounting structure.

  In vehicles such as automobiles, an instrument panel is installed in the front part of the passenger compartment. This instrument panel is usually provided with an operation panel for operating an air conditioner, an audio device, or the like at a position such as a central portion in the vehicle width direction.

  In such an operation panel, there is one in which an operation lever (rotation lever) is rotatably attached to an attachment base material via a shaft support portion (for example, see Patent Document 1).

  The rotating lever mounting structure described in this document inserts and locks a pair of elastic claws projecting from the mounting base material into an opening formed in the operation lever, and a pair of elastic claws. A pair of stopper portions provided between the portions regulate deformation of the pair of elastic claws in the closing direction to prevent the pair of elastic claws from coming off from the opening.

  And from the opposing surface of an attachment base material and an elastic nail | claw part, the bearing cylinder part which can mutually fit so that rotation is possible is protrudingly provided.

Japanese Patent No. 2441745

  However, the rotating lever mounting structure described in Patent Document 1 has the following problems.

  In other words, the mounting base and the operating lever are designed to prevent axial removal by inserting and locking the elastic claw of the mounting base to the opening of the operating lever. The backlash with respect to the axial direction of the operation lever could not be suppressed.

  Also, both the elastic claw and the bearing cylinder are provided on the mounting base, but the mold structure is considerably complicated to mold the elastic claw and the bearing cylinder at the same time. It becomes a thing. For this reason, it is difficult to form a plurality of elastic claws and bearing cylinders on the same mounting base material, and attach a plurality of operation levers adjacent to (adjacent to) up and down and left and right.

  Therefore, when a plurality of operation levers are arranged adjacent to each other vertically and horizontally, a plurality of sub-attachment bases each having only one set of elastic claw portions and bearing tube portions are provided, It is necessary to mount the main mounting base material adjacent to the upper and lower sides and the left and right sides, and the overall structure becomes complicated, and the operation levers cannot be arranged so close to each other. In addition, a wasteful cost has been incurred for interposing the auxiliary mounting base material.

  In order to solve the above-mentioned problems, the invention described in claim 1 is a rotating lever mounting structure in which an operation lever is rotatably mounted to a mounting base via a shaft supporting portion. A shaft portion projecting from the operation lever, and a bearing tube portion projecting from a mounting base material and capable of rotatably accommodating and holding the shaft portion, wherein the shaft support portion includes the shaft portion. An axial backlash preventing portion comprising a protruding ridge extending in the circumferential direction and a recessed groove capable of being accommodated and held so as to be rotatable and immovable in the axial direction. When the shaft support portion is fitted to at least one of the shaft portion and the bearing tube portion, the protrusion portion and the concave groove portion can be fitted. A slit portion capable of allowing deformation of the shaft portion or the bearing tube portion; and Wherein after fitting of the bushing portion, it is characterized in that retaining cylindrical portion capable of preventing the escape of the projecting portion and the groove portion due to deformation of the peripheral the slit portion is provided with.

  The invention described in claim 2 is characterized in that, in the above, the slit portion is provided with a circumferential phase shifted with respect to the shaft portion and the bearing tube portion.

  According to a third aspect of the present invention, in the above, the shaft support in which a separation preventing portion is provided between the mounting base and the operation lever, and the separation preventing portion is formed through the mounting base. An arc-shaped claw hole centered on the portion, and a locking claw portion that protrudes from the operation lever and can be locked to the opposite surface of the mounting base through the arc-shaped claw hole. It is characterized by.

  The invention described in claim 4 is characterized in that, in the above, an arcuate gear surface centered on the shaft support portion is formed on the surface of the operation lever opposite to the mounting base. Yes.

  According to invention of Claim 1, the following effects can be acquired by the said structure. In other words, since only the bearing tube portion needs to be formed on the mounting base material, the mold structure is simplified. Accordingly, it is possible to form a plurality of bearing tube portions adjacent to each other vertically and horizontally. As a result, it is possible to mount the operation lever adjacent to the top and bottom or left and right without using a sub-mounting base material, and it is possible to place the operation levers closer together than before, and further, Costs can be reduced as much as the mounting base is not required. In particular, since the mold structure is simplified as described above, it is possible to form the bearing cylinder portion up and down with respect to the same mounting base and to arrange the operation lever up and down. On the other hand, the operating lever is provided with a shaft portion and a retaining cylinder portion, but only one set of the shaft portion and the retaining cylinder portion may be provided for each operating lever. Even if the structure is somewhat complicated, there is no problem in molding. Moreover, the backlash with respect to the axial direction can be surely prevented by the axial backlash prevention portion composed of the protrusion and the concave groove. And a slit part can be easily formed with respect to at least one of a shaft part and a bearing cylinder part. Furthermore, by setting the retaining cylinder portion, it is possible to surely prevent the protrusion portion and the concave groove portion from coming off due to deformation around the slit portion.

  According to invention of Claim 2, the following effects can be acquired by the said structure. That is, it is possible to make the position of the slit portion not fit or difficult to fit, so that the shaft portion and the bearing tube portion can be made difficult to come off.

  According to invention of Claim 3, the following effects can be acquired by the said structure. That is, since the locking claw portion of the separation preventing portion is locked to the back side of the mounting base through the claw hole, the shaft portion and the bearing tube portion can be prevented from being inadvertently detached.

  According to invention of Claim 4, the following effects can be acquired by the said structure. That is, by installing the gear member so as to mesh with the gear surface, the operation lever can be driven to rotate via the gear member, and the shaft member and the bearing tube portion can be pressed by pressing the operation lever with the gear member. And can be prevented from coming off.

It is a disassembled perspective view of the rotation lever attachment structure concerning the Example of this invention. It is a longitudinal cross-sectional view of the shaft support part of FIG. (A)-(e) is an assembly-process figure of the shaft support part of FIG. It is a disassembled perspective view of the rotation lever attachment structure concerning the modification of this invention.

  Hereinafter, examples embodying the present embodiment will be described in detail with reference to the drawings.

  1 to 4 show this embodiment and its modifications.

  <Configuration> The configuration will be described below.

  In vehicles such as automobiles, an instrument panel is installed in the front part of the passenger compartment. This instrument panel is usually provided with an operation panel for operating an air conditioner, an audio device, or the like at a position such as a central portion in the vehicle width direction.

  As shown in FIGS. 1 and 2, there is a type of such an operation panel in which an operation lever 3 (rotation lever) is rotatably attached to an attachment base 1 via a shaft support portion 2. doing.

  Here, the attachment base 1 and the operation lever 3 are each made of resin. The operation lever 3 is appropriately provided with an attachment hole 3a for attaching a wire or an arm (not shown).

  In addition to the basic configuration as described above, the present embodiment has the following configuration.

(Configuration 1)
The shaft support portion 2 described above protrudes from the operation lever 3, and the shaft portion 4 protrudes from the mounting base 1, and the bearing tube portion 5 capable of rotatably holding and holding the shaft portion 4. Be prepared.

  Then, the shaft support portion 2 has a ridge portion 7 extending in the circumferential direction 6 between the shaft portion 4 and the bearing tube portion 5, and the ridge portion 7 is rotatable in the axial direction 8. An axial backlash prevention portion 11 including a concave groove portion 9 that can be accommodated and held so as not to move is provided.

  Further, when the shaft support portion 2 is fitted to at least one of the shaft portion 4 and the bearing tube portion 5, the protrusion portion 7 and the concave groove portion 9 can be fitted. Thus, the shaft portions 4 or the bearing tube portions 5 are provided with slit portions 12a and 12b that can allow deformation.

  Further, after the shaft portion 4 and the bearing tube portion 5 are fitted to the operation lever 3, it is possible to prevent the protrusion 7 and the concave groove portion 9 from coming off due to deformation around the slit portions 12a and 12b. A cylindrical portion 13 for preventing the removal is provided.

(Supplementary explanation 1)
Here, the shaft portion 4 described above is integrally projected from the surface of the operation lever 3 on the mounting base material 1 side. Further, the above-described bearing tube portion 5 is integrally projected from the surface of the mounting base 1 on the operation lever 3 side. The outer diameter of the shaft portion 4 and the inner diameter of the bearing tube portion 5 are substantially the same.
In this case, a plurality of bearing tube portions 5 are formed on the mounting base 1 so that a plurality of operation levers 3 can be arranged in parallel (in FIG. Or more). The interval L between the plurality of bearing tube portions 5 is preferably set to a minimum distance at which the adjacent operation levers 3 do not interfere with each other.
Alternatively, as shown in the modification of FIG. 4, a pair of projecting surface portions 1 a and 1 b are integrally formed on the mounting base 1, and bearing cylinder portions are respectively provided on the opposite surface sides of these projecting surface portions 1 a and 1 b. 5 and a claw hole 18 which will be described later can be integrally provided so that the operation lever 3 can be arranged adjacently in the vertical direction. In this case, the mounting base 1 is a surface extending substantially in the vertical direction, and the projecting surface portions 1a and 1b extend in a direction perpendicular to the mounting base 1 and are the minimum necessary for die cutting. It is assumed that they are arranged in parallel with an interval equal to or greater than the interval.

  The protrusions 7 and the concave grooves 9 of the axial backlash prevention portion 11 described above can have a concave-convex fitting with the same shape and the same or similar size and without backlash in the axial direction 8. It is supposed to be. In this case, the protrusion 7 and the groove 9 have a substantially semicircular cross section. In this case, the protrusion 7 of the axial backlash prevention portion 11 is formed on the inner peripheral surface of the bearing tube portion 5, and the concave groove portion 9 is formed on the outer peripheral surface of the shaft portion 4, respectively. May be.

  The slit portions 12 a and 12 b described above extend in the axial direction 8. In this case, the slit portions 12a and 12b are provided in both the shaft portion 4 and the bearing tube portion 5, but as described above, they may be provided in only one of them. The slit portions 12a and 12b can be provided at one place or a plurality of two or more places with respect to the shaft portion 4 or the bearing tube portion 5, respectively. Since it will be too long, it is optimal to have one or two places. In addition, when providing slit part 12a, 12b in both the shaft part 4 and the bearing cylinder part 5, the installation number of slit part 12a, 12b may be made the same, or may differ.

  The above-described retaining cylinder portion 13 is provided concentrically on the outer peripheral side of the shaft support portion 2. In this case, the retaining cylinder portion 13 is integrally projected from the surface of the operation lever 3 on the mounting base 1 side. The outer diameter of the bearing cylinder 5 and the inner diameter of the retaining cylinder 13 are substantially the same, or the inner diameter of the retaining cylinder 13 is slightly larger.

  If necessary, when the shaft portion 4 and the bearing tube portion 5 are fitted to the retaining tube portion 13, the protrusion 7 and the recessed groove portion 9 can be fitted. A slit portion 14 that can allow deformation of the retaining cylinder portion 13 may be provided. The slit portion 14 can be provided at one place or a plurality of two or more places. However, if the number of the slit portions 14 is increased excessively, the retaining cylinder portion 13 will be easily deformed. Is optimal.

  In addition, the above-described bearing tube portion 5 has such a length that the tip does not come into contact with the back surface of the operation lever 3 when the protruding portion 7 and the recessed groove portion 9 are fitted.

  Similarly, the above-described retaining cylinder portion 13 has such a length that the tip does not come into contact with the surface of the mounting substrate 1 when the protruding portion 7 and the recessed groove portion 9 are fitted.

(Configuration 2)
In the above, the above-described slit portions 12a and 12b are provided such that the phases in the circumferential direction 6 are shifted from each other with respect to the shaft portion 4 and the bearing tube portion 5.

(Supplementary explanation 2)
In this case, the slit portion 12a of the shaft portion 4 and the slit portion 12b of the bearing tube portion 5 are provided at two positions that are 180 degrees out of phase with each other, and the operation lever 3 is in the neutral position (or the reference position). At some point, the phase is set to be 90 degrees out of phase with each other. The neutral position of the operation lever 3 is an intermediate position in the rotation range of the operation lever 3. To shift the phases in the circumferential direction 6 from each other is based on the neutral position of the operation lever 3.

  Although not particularly illustrated, it is most preferable to shift the phase so that the positions of the slit portions 12a and 12b in the circumferential direction 6 do not match within the rotation range of the operation lever 3.

  In addition, it is preferable to provide the slit part 14 of the retaining cylinder part 13 so that the phases of the slit parts 12a and 12b and the circumferential direction 6 are shifted from each other.

(Configuration 3)
In the above description, the separation preventing portion 17 is provided between the mounting base 1 and the operation lever 3 described above.

  The separation preventing portion 17 is provided so as to protrude from the operation lever 3 and the arcuate claw hole 18 centering on the shaft support portion 2, which is formed through the mounting base 1. And a locking claw portion 19 that can be locked to the opposite surface of the mounting base 1 through the claw hole 18.

(Supplementary explanation 3)
Here, the above-described separation preventing unit 17 is merely an auxiliary device and is not intended to prevent backlash with respect to the axial direction 8.

  And the notch part 18a for inserting the latching claw part 19 is provided in the one end part of the above-mentioned claw hole 18. As shown in FIG. Moreover, the above-mentioned latching claw part 19 is integrally protruded from the surface of the operation lever 3 on the mounting base material 1 side.

  The claw holes 18 described above are provided at two positions that are 180 degrees out of phase. Further, the locking claw portions 19 are provided at two positions corresponding to the claw holes 18 and shifted in phase by 180 degrees. However, the locking claw portion 19 and the claw hole 18 are not limited to two locations, and may be provided at a plurality of three or more locations.

  And the latching claw part 19 has the axial part 19a and the nail | claw part 19b. Among these, the above-described shaft portion 19a has the same length as the interval between the operation lever 3 and the mounting base 1, or slightly longer than that. The shaft portion 19 a has substantially the same thickness as the claw hole 18.

  The above-described claw portion 19b is formed to protrude from the outer surface side of the shaft portion 19a. The claw portion 19b has an introduction taper portion 19c that can guide the insertion into the notch portion 18a at the tip portion thereof, and is engaged with the back surface side of the introduction taper portion 19c with respect to the back surface of the mounting substrate 1. It has a locking surface 19d that can be stopped.

(Configuration 4)
In the above, an arcuate gear surface 21 centering on the shaft support portion 2 is formed on the surface of the operation lever 3 opposite to the mounting base 1.

(Supplementary explanation 4)
The gear member 22 is installed so as to mesh with the gear surface 21 described above. The gear member 22 is mechanically connected to an operation dial (not shown), for example.

  <Operation> The operation of this embodiment will be described below.

  When attaching the operation lever 3 to the mounting base 1, first, as shown in FIG. 3A, the operation lever 3 is arranged above the mounting base 1, and the locking claw of the operation lever 3 is placed. The part 19 faces the notch 18 a of the claw hole 18 of the mounting base 1.

Next, as shown in FIG. 3 (b), the operation lever 3 is moved closer to the mounting base 1.
Then, as shown in FIG. 3 (c), while inserting the locking claw portion 19 of the operation lever 3 into the notch portion 18 a of the claw hole 18 of the mounting base material 1, at the same time, the bearing tube portion 5 of the mounting base material 1. The shaft portion 4 of the operation lever 3 is inserted.
Finally, as shown in FIGS. 3D and 3E in order, the protrusion 7 and the groove 9 are fitted.

  At this time, the slit portions 12 a and 12 b provided in at least one of the shaft portion 4 or the bearing tube portion 5 allow deformation of the shaft portion 4 or the bearing tube portion 5. And are fitted.

  Further, the retaining cylinder part 13 is fitted on the bearing cylinder part 5 to prevent the protrusion 7 and the concave groove part 9 from coming off due to deformation around the slit parts 12a and 12b.

  Then, by rotating the operation lever 3 around the shaft support portion 2 with respect to the attachment base material 1, the locking claw portion 19 of the operation lever 3 is moved along the arcuate claw hole 18 of the attachment base material 1. It moves to the side which leaves | separates from the notch part 18a, and it is made for the latching claw part 19 not to remove | deviate from the claw hole 18. FIG.

  Further, the gear member 22 is installed so as to mesh with the gear surface 21 of the operation lever 3.

  As described above, the operation lever 3 is attached so as not to rattle in the axial direction 8 with respect to the attachment base 1.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 1)
The shaft support portion 2 includes a shaft portion 4 that protrudes from the operation lever 3 and a bearing tube portion 5 that protrudes from the mounting base 1 and can accommodate and hold the shaft portion 4 rotatably. The shaft support portion 2 is provided between the shaft portion 4 and the bearing tube portion 5, and a ridge portion 7 extending in the circumferential direction 6. The ridge portion 7 is rotatable in the axial direction 8. It is provided with an axial backlash prevention portion 11 comprising a concave groove portion 9 that can be accommodated and held so that it cannot move, and the shaft support portion 2 is fitted to at least one of the shaft portion 4 and the bearing tube portion 5. In order to allow the protrusion 7 and the concave groove 9 to be fitted, the shaft portion 4 or the bearing tube portion 5 is provided with slit portions 12a and 12b that can be deformed. After the shaft portion 4 and the bearing tube portion 5 are fitted to the operation lever 3, the upper portion due to deformation around the slit portions 12a and 12b. From the protrusions 7 and the concave groove portion 9 omission retaining cylindrical portion 13 capable of preventing the with is provided, it is possible to obtain the following effects.

  That is, since only the bearing tube portion 5 needs to be formed on the mounting base 1, the mold structure is simplified. Therefore, it is possible to form the plurality of bearing tube portions 5 adjacent to the same mounting base material 1 in the vertical direction (see FIG. 4) and the left and right (or in the lateral direction, see FIG. 1). As a result, it is possible to mount the operation lever 3 adjacent to the top and bottom or the left and right without using a sub-attachment base as a separate part, and the operation levers 3 can be disposed closer to each other than before. In addition, the cost can be reduced to the extent that the auxiliary mounting base material is not required. In particular, by simplifying the mold structure as described above, it is possible to form the bearing cylinder portion 5 vertically with respect to the same mounting base 1 and arrange the operation lever 3 vertically. .

  On the other hand, the operating lever 3 is provided with the shaft portion 4 and the retaining cylinder portion 13, but only one set of the shaft portion 4 and the retaining cylinder portion 13 is provided for each operating lever 3. Since it suffices to provide it, there is no problem in molding even if the structure is somewhat complicated.

  Further, the axial backlash prevention portion 11 including the ridge portion 7 and the concave groove portion 9 can reliably prevent backlash relative to the axial direction 8.

  The slit portions 12 a and 12 b can be easily formed on at least one of the shaft portion 4 and the bearing tube portion 5.

  Further, by setting the retaining cylinder 13, it is possible to reliably prevent the protrusion 7 and the groove 9 from coming off due to deformation around the slits 12 a and 12 b.

(Effect 2)
Since the slit portions 12a and 12b are provided with the shaft portion 4 and the bearing tube portion 5 shifted from each other in the circumferential direction 6, the positions of the slit portions 12a and 12b are not aligned. Since it can be made difficult, the shaft part 4 and the bearing cylinder part 5 can be made difficult to come off.

(Effect 3)
A separation preventing portion 17 is provided between the mounting base 1 and the operation lever 3, and the separation preventing portion 17 has an arc shape centering on the shaft support portion 2 formed through the mounting base 1. And a locking claw portion 19 that protrudes from the operation lever 3 and can be locked to the opposite surface of the mounting base 1 through the arc-shaped claw hole 18. Since the locking claw portion 19 of the separation preventing portion 17 is locked to the back surface side of the mounting base 1 through the claw hole 18, the shaft portion 4 and the bearing tube portion 5 should not be inadvertently detached. Can do.

(Effect 4)
An arcuate gear surface 21 centering on the shaft support portion 2 is formed on the surface of the operation lever 3 opposite to the mounting base 1, so that the gear member 22 is engaged with the gear surface 21. By installing so as to match, the operation lever 3 can be rotationally driven via the gear member 22, and the operation lever 3 is pressed by the gear member 22 so that the shaft portion 4 and the bearing tube portion 5 do not come off. Can be.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

  The structure of the present invention is not limited to an operation panel for an automobile, but can be generally applied to a turning lever provided in various facilities and machines.

DESCRIPTION OF SYMBOLS 1 Mounting base material 2 Shaft support part 3 Operation lever (turning lever)
4 Shaft portion 5 Bearing cylinder portion 6 Circumferential direction 7 Projection portion 8 Axial direction 9 Recessed groove portion 11 Axial backlash prevention portion 12a Slit portion 12b Slit portion 13 Retaining cylinder portion 17 Separation preventing portion 18 Claw hole 19 Locking claw portion 21 Gear surface

Claims (4)

In the rotating lever mounting structure in which the operation lever is rotatably mounted to the mounting base via the shaft support portion.
The shaft support portion includes a shaft portion projecting from the operation lever, and a bearing tube portion projecting from an attachment base material and capable of rotatably accommodating and holding the shaft portion,
The shaft support portion includes a protrusion extending in the circumferential direction between the shaft portion and the bearing tube portion, and a groove portion capable of receiving and holding the protrusion so as to be rotatable and immovable in the axial direction. With an axial backlash prevention part consisting of
When the shaft support portion is fitted into at least one of the shaft portion and the bearing tube portion, the shaft portion or the concave groove portion can be fitted with the shaft portion or the groove portion. Comprising a slit portion capable of allowing deformation of the bearing tube portion;
Further, the operating lever is provided with a retaining cylinder portion that can prevent the protruding portion and the recessed groove portion from coming off due to deformation around the slit portion after the shaft portion and the bearing tube portion are fitted to each other. A rotating lever mounting structure characterized by that.   The rotating lever mounting structure according to claim 1, wherein the slit portion is provided with a phase shift in a circumferential direction with respect to the shaft portion and the bearing tube portion. A separation preventing part is provided between the mounting base and the operation lever,
The separation preventing portion is formed in a circular arc-shaped claw hole centered on the shaft support portion formed through the mounting base material, and protrudes from the operation lever, and passes through the circular arc-shaped claw hole to attach the mounting base material. The rotating lever mounting structure according to claim 1 or 2, comprising a locking claw portion that can be locked to the opposite surface. The arc-shaped gear surface centering on the said shaft support part is formed in the surface on the opposite side to the said mounting base material of the said operation lever, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. The rotating lever mounting structure described in 1.