JP4149470B2 - Sliding resistance applying device - Google Patents

Description

  The present invention relates to, for example, a wind direction changing device provided at an air-conditioning outlet in a vehicle such as a vehicle, a ship, an airplane, etc., an assist grip for holding and supporting a body by a passenger boarding the vehicle, a trunk case, and an attache case The present invention relates to a sliding resistance applying device that is embodied in a grip or the like that is gripped for transporting, and the like, and applies sliding resistance to a movable member.

  In the wind direction changing device described above, the direction of the fin is changed and the wind direction is changed by operating a movable member having fins for changing the wind direction. The movable member is supported by the shaft so as to be rotatable with respect to the fixed portion in the vehicle compartment. Furthermore, in order to stabilize the operation of the movable member, resistance applying means for applying resistance between the rotating shaft and the fixed portion is provided. This resistance applying means is generally configured by tightly fitting a resin shim on a metal rotating shaft, for example (first conventional configuration).

  Further, the above-described grip is held in a retracted state so as not to obstruct the passenger when not in use or to improve the design. In this state, the grip is held so as to be substantially parallel to the vehicle or the main body of the case. On the other hand, at the time of use, the grip is rotated about the rotation axis and is caused to be in a substantially vertical state with respect to the main body to be in a gripping state. This type of grip is equipped with a return means such as a torsion spring so that the grip is automatically returned to the retracted state when manual gripping is released in the gripping state.

  And in this kind of grip, at the time of switching between the storage state and the gripping state, the grip is not suddenly caused, or the grip suddenly returns to the storage state and does not collide with the main body. A resistance applying means for applying a resistance is provided between the rotating shaft and the fixed portion thereof. As this resistance applying means, for example, a method of mounting a damper member such as an oil damper between the rotating shaft and the fixed portion is generally employed (second conventional configuration).

  However, in the first conventional configuration, the rotation axis, shim, and the like may change in degree of expansion due to deformation or temperature change. For this reason, there has been a problem that smooth movement of the rotating body may be hindered and it takes time and effort to apply grease between the rotating shaft and the support portion. Further, there has been a problem that the rotation shaft, the shim, or the support portion that supports the rotation shaft may wear due to repeated rotation, and resistance cannot be imparted, resulting in rattling.

  In the second conventional configuration, the viscosity of the oil sealed in the oil damper changes due to a temperature change or the like, and the resistance at the time of triggering and the rotation speed of the grip at the time of return may change. Such a change in resistance and rotation speed has a problem in that it may give the passenger a sense of incongruity.

  The present invention has been made paying attention to the problems existing in the prior art as described above. An object of the present invention is to provide a sliding resistance imparting device that can reduce the temperature dependence of the sliding resistance and is always excellent in durability while ensuring an appropriate sliding resistance.

In order to achieve the above object, the invention according to claim 1 is directed to a fixed member, a movable member at least a part of which is arranged to face the fixed member, and an intermediate between the fixed member and the movable member. An elastic member to be mounted, and the elastic member is elastically brought into contact with at least one part of the fixed member and at least one part of the movable member, and the elastic member is in sliding resistance with respect to the movable member. The movable member has a rotation shaft that is accommodated in a support hole having a planar quadrilateral shape formed in the fixed member, and between the rotation shaft and the inner peripheral surface of the support hole. In the sliding resistance applying device in which an elastic member made of a leaf spring is interposed , the leaf spring has a substantially circular planar bearing portion so as to be in sliding contact with the outer peripheral surface of the rotating shaft in an elastic contact state; Abuts against the inner peripheral surface of the support hole in a pressed state The bearing portion and the support portion are integrally formed by bending a metal plate, and the leaf spring is compressed in a direction in which the support portions slightly approach each other. The gist is that it is mounted in a state .

In this way, it is possible to suppress the temperature dependence of the sliding resistance while avoiding wear and deformation of the elastic member that provides the sliding resistance with a simple configuration, and always provides a stable sliding resistance. . Further, a stable sliding resistance is applied to the rotating shaft by the pressing force against the rotating shaft of the leaf spring or the inner peripheral surface of the support hole.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the fixed member includes an inner peripheral wall of an air-conditioning outlet in the vehicle, and the movable member is provided with a wind direction changing portion . .

If it does in this way, the wind direction change apparatus for vehicle air conditioning which has an effect | action of the invention of the said Claim 1 is realizable.

Since this invention is comprised as mentioned above, there exist the following effects.
According to the first aspect of the present invention, the temperature dependency of the sliding resistance can be suppressed while avoiding the wear and deformation of the elastic member that imparts the sliding resistance with a simple configuration, and the sliding is always stable. Resistance can be imparted. In addition, stable sliding resistance can be imparted to the rotating shaft by utilizing the pressing force against the rotating shaft of the leaf spring or the inner peripheral surface of the support hole.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the sliding resistance applying device can be put into practical use as an air-conditioning outlet in the vehicle.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in an air conditioning outlet used for vehicle interior air conditioning or the like of a vehicle will be described in detail with reference to FIGS.

  As shown in FIGS. 1 to 3, an air conditioning wind direction changing device (hereinafter referred to as “register”) 71 is attached to an air conditioning air passage D that is opened in a cylindrical shape on the front surface of a vehicle instrument panel 62 that is a fixed member. . The register 71 is made of a resin such as polypropylene, and includes a main body case 72 as a movable member having a substantially rectangular tube shape. The main body case 72 is integrally provided with a plurality of fixing plates 73 extending in the horizontal direction. The main body case 72 is supported by a rotating shaft 74 extending from both sides thereof so as to be rotatable in the vertical direction of the air conditioning air passage D (in the direction of the arrow in FIG. 1) with respect to the vehicle instrument panel 62.

  A plurality of (five in the present embodiment) wind direction deflecting plates 75 extending in the vertical direction are arranged behind the fixed plate 73 in the main body case 72 at a predetermined interval. Each wind direction deflecting plate 75 includes a plate-like portion 76, a shaft portion 77 projecting on the same straight line from the upper end and the lower end of the plate-like portion 76, and a connecting shaft projecting at the lower rear end of the plate-like portion 76. Part 78. A shaft hole 79 corresponding to the shaft portion 77 is formed inside the upper and lower wall plates 72 a and 72 b of the main body case 72. The tip of the shaft portion 77 is fitted in each shaft hole 79.

  A long connecting rod 80 is attached to the connecting shaft portion 78, and the wind direction deflecting plates 75 are connected to each other by the connecting rod 80. An operation lever 81 is attached to the wind direction deflection plate 75 located at the center so as to protrude from the front surface of the main body case 72. Then, by operating this operation lever 81, each wind direction deflecting plate 75 is interlocked and rotated about each shaft portion 77.

  Here, an annular convex portion 82 is formed around one of the shaft holes 79. The convex portion 82 abuts against the edge of the plate-like portion 76 in a state where the tip end of the shaft portion 77 is fitted in the shaft hole 79 and has a sliding resistance when the wind direction deflecting plate 75 is rotated. It comes to grant.

  As shown in FIGS. 1, 2, and 4, the rotating shaft 74 has a cylindrical shape. The inner wall 83 of the vehicle instrument panel 62 is provided with a support hole 84 having a planar square shape. And the said rotating shaft 74 is accommodated in the support hole 84 via the metal leaf | plate spring 85 as an elastic member. The leaf spring 85 is formed into a substantially circular shape in a plane, and is slidably contacted with the outer peripheral surface of the rotating shaft 74 in an elastic contact state. The plate spring 85 has a flat plate shape and is joined to the inner peripheral surface 84a of the support hole 84 in a pressed state. And a supporting portion 87 that performs the above-described operation. The bearing portion 86 and the support portion 87 are integrally formed by bending a single metal plate. And this leaf | plate spring 85 is mounted | worn in the state compressed in the direction in which the support parts 87 approach a little.

  Thereby, the leaf spring 85 is brought into contact with the bearing portion 86 in elastic contact with the rotating shaft 74 and the support portion 87 pressing the inner peripheral surface 84 a of the support hole 84. For this reason, when the rotating shaft 74 is rotated in accordance with the vertical rotation of the air conditioning air passage D of the main body case 72, sliding resistance is applied to the rotating shaft 74 by the pressing force of the leaf spring 85. Is done. A predetermined load is applied when the body case 72 is rotated.

Next, the effect exhibited by this embodiment will be described.
(1) In the present embodiment, a metal leaf spring 85 is interposed between the rotating shaft 74 of the main body case 72 and the inner peripheral surface 84 a of the support hole 84 of the inner wall 83 of the vehicle instrument panel 62. The leaf spring 85 is in elastic contact with the rotating shaft 74, so that sliding resistance is applied to the rotating shaft 74.

  As described above, the application of the sliding resistance to the rotating shaft 74 is governed exclusively by the pressing force of the metal leaf spring 85, and therefore is hardly affected by the ambient temperature change or the like. Even if the rotating shaft 74 is worn, elastic contact with the rotating shaft 74 is secured by elastic deformation of the leaf spring 85 itself following the wear. Accordingly, the leaf spring 85 can always give a stable sliding resistance to the rotating shaft 74. Therefore, in the air-conditioning wind direction changing device 71, it is possible to always ensure good sliding resistance with moderation.

  (2) In the present embodiment, the leaf spring 85 is slidably contacted with the outer peripheral surface of the rotating shaft 74 in an elastic contact state, and the support portion is in contact with the inner peripheral surface 84a of the support hole 84 in a pressed state. 87.

Such a configuration of the leaf spring 85 is extremely simple, and an excellent effect as described in the above (1) can be obtained with a simple configuration.
(Second Embodiment)
Hereinafter, a second embodiment embodied in an air-conditioning outlet different from the first embodiment will be described in detail with reference to FIGS. 5 and 6.

  As shown in FIGS. 5 to 6, the register 91 of the second embodiment has a cylindrical rotating shaft 92 projecting on both sides of a body case 72 similar to the register 71 of the first embodiment. Yes. On the other hand, the support hole 93 of the vehicle instrument panel 62 is formed in a substantially circular plane shape. On the inner peripheral surface 93 a of the support hole 93, a plurality of (four in the present embodiment) convex portions 94 are provided to project toward the center of the support hole 93 at predetermined substantially equal angular intervals. An annular gap 95 extending in the rotation direction of the rotation shaft 92 is formed between the rotation shaft 92 and each convex portion 94 in a state where the rotation shaft 92 is accommodated in the support hole 93. .

  A first locking groove 96 and a second locking groove 97 are formed at a predetermined interval at the tip of the rotating shaft 92. The first locking groove 96 has a depth twice that of the second locking groove 97. Both ends of the leaf spring 45 are locked in the both locking grooves 96 and 97, respectively. Here, the leaf spring 45 is mounted in a slightly twisted state so that a part of the vicinity of both ends thereof is parallel to the axial direction of the rotation shaft 92.

  The leaf spring 45 has a surplus length and is longer than the total circumferential length of the corresponding portions in the annular gap 95. Here, the width of the annular gap 95 between the outer peripheral surface of the rotating shaft 92 and each convex portion 94 is only slightly wider than the thickness of the leaf spring 45. In addition, a sliding resistance is generated between the rotary shaft 92. Further, the slack of the leaf spring 45 is allowed by the recesses 98 between the protrusions 94.

(Example of change)
The above-described embodiments can be modified as follows.
In the second embodiment, the leaf spring 45 may be fixed to the inner peripheral surface 93a of the support hole 93 of the ring 44 or the vehicle instrument panel 62 that forms a fixing member.

  In the first and second embodiments, leaf springs 45 and 85 are interposed between the shaft portion 77 of the wind direction deflecting plate 75 and the shaft hole 79 of the main body case 72 to provide sliding resistance. May be.

  In the first embodiment, the support hole 84 is formed in a planar circular shape, and the leaf spring 85 is formed in a shape corresponding to the support hole 84. The leaf spring 85 may be configured to elastically contact the inner peripheral surface 84a of the support hole 84. In this case, the support portion 87 of the leaf spring 85 also serves as the bearing portion 86, and a sliding resistance is generated between the support portion 87 and the inner peripheral surface 84 a of the support hole 84. In this case, the plate spring 85 and the rotating shaft 74 may be configured to rotate integrally.

  In the first and second embodiments, the present invention is embodied in the air conditioning wind direction changing devices 71 and 91 for vehicles. However, the present invention is embodied in an air conditioning wind direction changing device for other vehicles such as ships and aircrafts. May be.

The disassembled perspective view which shows the principal part of the wind direction change apparatus for an air conditioning of 1st Embodiment. FIG. 11 is a sectional view taken along line 11-11 in FIG. FIG. 12 is a cross-sectional view taken along line 12-12 of FIG. FIG. 13 is a sectional view taken along line 13-13 in FIG. 2; The expansion disassembled perspective view of the principal part of the wind direction change apparatus for an air conditioning of 2nd Embodiment. Sectional drawing which shows the arrangement | positioning relationship of the rotating shaft of FIG. 5, a support hole, and a leaf | plate spring.

Explanation of symbols

  45, 85 ... leaf springs constituting an elastic member, 62 ... vehicle instrument panel as a fixed member, 94 ... convex portion as a part of the fixed member, 95 ... annular gap as a gap, 72 ... main body case as a movable member, 74, 92 ... rotating shaft, 75 ... wind direction deflecting plate as a wind direction changing part, 84, 93 ... support hole, 84a, 93a ... inner peripheral surface of the support hole, 86 ... bearing part, 87 ... support part.

Claims (2)

A fixed member, a movable member at least partially facing the fixed member, and an elastic member interposed between the fixed member and the movable member, wherein the elastic member is at least of the fixed member. The elastic member is configured to elastically contact at least one of a part and at least a part of the movable member so that the elastic member provides sliding resistance to the movable member, and the movable member is formed in the fixed member. A sliding resistance applying device having a rotating shaft accommodated in a support hole having a flat rectangular shape, and an elastic member made of a leaf spring interposed between the rotating shaft and the inner peripheral surface of the support hole . The leaf spring is a pair of flat plate-like bearings that are in contact with the outer peripheral surface of the rotating shaft in an elastic contact state and in a pressed state on the inner peripheral surface of the support hole. And a support part that forms the bearing part. The serial support portion are integrally formed by bending a metal plate, and the plate spring, the slide-resistance applying device that is mounted in a state where the support portions are compressed in a direction approaching slightly. The sliding resistance applying device according to claim 1, wherein the fixed member includes an inner peripheral wall of an air-conditioning outlet in the vehicle, and the movable member is provided with a wind direction changing portion .

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