JP2008094232A - Slide door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide door device eliminating the need for any press-fitting thereof by a tool, reducing the defective fraction, and consistently ensuring the smooth opening/closing slide operation by absorbing the dispersion of the dimensions caused by the deformation of a frame. <P>SOLUTION: An air-mix door 13 comprises a frame 30 having an opening part 30a, a slide plate 33 arranged along one side of the frame 30 and having a rack gear 31 formed thereon, and a sliding mechanism F1 for performing the slide drive of the slide plate 33. The sliding mechanism F1 comprises a first drive shaft member 41 having a first shaft supporting part 411 and a pinion gear 412, and a second drive shaft member 42 having a second shaft supporting part 421, and has a connection part which is engaged with each other in the circumferential direction to transfer the driving force and permits the relative displacement in the axial direction between both drive shaft members 41, 42 between the first drive shaft member 41 and the second drive shaft member 42. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a slide door device applied to, for example, an air mix door of an air conditioning unit of an automobile.

  In a vehicle air conditioning unit that integrally includes an evaporator, a heater core, and a blower fan, air blown from the blower fan is passed through the evaporator and air distribution is controlled by an air mix door. In this air mix door, the ratio between the amount of air that passes the air cooled by the evaporator directly to the bypass passage and the amount of air that passes the air cooled by the evaporator to the heater core side is controlled.

  Conventionally, the air mix door includes a frame having an opening and a slide plate that is slidably driven along one side surface of the frame, and swells toward the downstream side of the cold air that has passed through the evaporator. A curved sliding door device is known (for example, see Patent Document 1).

By using such a sliding door device, the air mix door can be made more compact and the evaporator can be made smaller than when using an open / close door device that opens and closes using the end of the door plate as a pivot. Since the passed air can be smoothly circulated to the bypass passage side or the heater core, there is an advantage of reducing the ventilation resistance.
JP 2001-113936 A

  However, in the conventional slide door device, as a slide drive mechanism for slidingly driving the slide plate, a pair of pinion gears engaged with rack gears formed on both end portions of the slide plate at both ends of the aluminum shaft, and a frame In contrast, a mechanism including a pair of rotation support portions that are rotatably supported is employed. When assembling, the pair of pinion gears are held by a jig and the aluminum shaft is inserted while being press-fitted. Thus, there is a problem that the opening / closing operation by the slide plate may be caused by the poor insertion of the aluminum shaft. .

  The present invention has been made paying attention to the above-mentioned problems, eliminates the need for press-fitting with a jig, can reduce the defect rate, and absorbs variation in dimensions due to deformation of the frame, thereby smoothly opening and closing. An object of the present invention is to provide a sliding door device capable of stably ensuring a sliding operation.

To achieve the above object, according to the present invention, a frame in which an opening is formed, a slide plate disposed along one side surface of the frame and formed with a rack gear, and a slide drive for sliding the slide plate A sliding door device comprising a mechanism,
The slide drive mechanism is
A first drive shaft member having at least a first shaft support portion rotatably supported by the first bearing portion of the frame; and a pinion gear meshing with the rack gear;
A second drive shaft member having a second shaft support portion rotatably supported by at least the second bearing portion of the frame;
With
Between the first drive shaft member and the second drive shaft member, there is a connecting portion that engages with each other in the circumferential direction to transmit a driving force and allow relative displacement in the axial direction of both drive shaft members. Features.

  Therefore, in the slide door device of the present invention, when the slide drive mechanism is assembled, the first drive shaft member and the second drive shaft member are connected via a connecting portion that allows relative axial displacement of both drive shaft members. Connected.

  That is, as in the prior art using an aluminum shaft, press fitting with a jig is not required during assembly. For this reason, there is no occurrence of an opening / closing operation failure due to the slide plate due to an insertion failure of the aluminum shaft, and the product failure rate can be greatly reduced.

  In addition, the connecting portion allows relative displacement in the axial direction while engaging the first drive shaft member and the second drive shaft member in the circumferential direction. The shaft can be centered out while absorbing variations. In other words, even if the axial distance between the first bearing portion and the second bearing portion on the frame side becomes longer or shorter than the set interval due to frame deformation, the relative displacement in the axial direction of the connecting portion Thus, this variation can be absorbed.

  And since a connection part engages a 1st drive shaft member and a 2nd drive shaft member in the circumferential direction, at the time of slide drive of a slide board, the drive force from a door actuator is sent from one drive shaft member to the other. Driving force transmission is achieved by transmitting to the drive shaft member.

  As a result, press-fitting with a jig is not required, the defect rate can be reduced, and a smooth opening / closing slide operation can be stably secured by absorbing dimensional variations due to frame deformation.

  Hereinafter, the best mode for realizing the sliding door device of the present invention will be described based on Example 1 shown in the drawings.

First, the configuration will be described.
FIG. 1 is a schematic diagram showing an air conditioning unit for a vehicle to which an air mixing door (an example of a sliding door device) of Example 1 is applied, and FIG. 2 is a perspective view showing an air mixing door in the air conditioning unit for a vehicle. .

  As shown in FIG. 1, a vehicle air conditioning unit to which the sliding door device of the first embodiment is applied includes a blower unit case 1, an air conditioning unit case 2, a defroster duct 3, a ventilator duct 4, and a foot duct. 5 is provided.

  As shown in FIG. 1, the blower unit case 1 includes a first intake door 6, a second intake door 7, a clean filter 8, a blower fan 9, a blower motor 10, and a blower duct 11. The blower unit case 1 guides the inside air or outside air to the air conditioning unit case 2.

As shown in FIG. 1, the air conditioning unit case 2 includes an evaporator 12, an air mix door 13, a heater core 14, a partition plate 15, a differential door 16, a vent door 17, and a max cool door 18. Have.
The air conditioning unit case 2 has a shape that can be separated into left and right, and fastens two cases separated by screws or the like.
The evaporator 12 is a cooling heat exchanger.
The heater core 14 is a heat exchanger for heating.

  As shown in FIG. 2, the air mix door 13 has a ratio between an air volume that allows the air cooled by the evaporator 12 (cool air) to pass therethrough and an air volume that passes the air heated by the heater core 14 (hot air). It is a sliding door that controls from full cold to full hot.

  As shown in FIG. 1, the defroster duct 3 includes a front defroster 19 and left and right side defrosters 20 and 21 as outlets.

  As shown in FIG. 1, the ventilator duct 4 includes a center ventilator 22 and left and right side ventilators 23 and 24 as outlets.

  As shown in FIG. 1, the foot duct 5 has left and right front foot outlets 25 and 26 and left and right rear foot outlets 27 and 28.

Next, the structure of the air mix door 13 of Example 1 is demonstrated.
3 is a perspective view showing the air mix door 13 of the first embodiment. FIG. 4 is a perspective view showing a state in which the first drive shaft member and the second drive shaft member of the air mix door 13 of the first embodiment are assembled. 5 is a view showing the first drive shaft member, where (a) shows a left side view, (b) shows a front view, and (c) shows a right side view. 6A and 6B are views showing the second drive shaft member, where FIG. 6A shows a left side view, FIG. 6B shows a front view, and FIG. 6C shows a right side view. 7A and 7B are views showing the operation when the first drive shaft member and the second drive shaft member are assembled to the frame. FIG. 7A is a side view of the frame in which the drive shaft member is assembled, and FIG. A front sectional view is shown, and (c) shows a sectional view after the shaft is fitted.

  As shown in FIG. 3, the air mix door 13 according to the first embodiment includes a frame 30 in which an opening 30 a is formed, and a slide in which rack gears 31 and 32 are formed along one side of the frame 30. A plate 33 and a slide drive mechanism F1 that slides the slide plate 33 by a door actuator (not shown) are provided.

  As shown in FIG. 3, the slide drive mechanism F1 includes at least a first shaft support portion 411 that is rotatably supported by the first bearing portion 301 of the frame 30, and a pinion gear 412 that meshes with the rack gear 31. And a first drive shaft member 41 having a second shaft support portion 421 that is rotatably supported by at least the second bearing portion 302 of the frame 30. Between the drive shaft member 41 and the second drive shaft member 42, there is a connecting portion that engages with each other in the circumferential direction to transmit a drive force and allow relative displacement in the axial direction of both the drive shaft members 41, 42. .

  As shown in FIG. 3, the slide plate 33 includes a first rack gear 31 and a second rack gear 32 as rack gears. As shown in FIGS. 4 and 5, the first drive shaft member 41 is made of, for example, a synthetic resin such as POM (polyoxymethylene) containing glass fiber, and is attached to the first bearing portion 301 of the frame 30. A first shaft support portion 411 rotatably supported, a first pinion gear 412 meshing with the first rack gear 31, a first shaft portion 413 extending in the axial direction from the first pinion gear 412, and the first shaft A first cross notch adjustment unit 414 (first notch adjustment unit) formed at the end position of the portion 413.

  As shown in FIGS. 4 and 6, the second drive shaft member 42 is made of, for example, a synthetic resin such as POM containing glass fiber and is rotatably supported by the second bearing portion 302 of the frame 30. A biaxial support portion 421, a second pinion gear 422 meshing with the second rack gear 32, a second shaft portion 423 extending in the axial direction from the second pinion gear 422, and an end position of the second shaft portion 423 And a formed second cross-cut adjustment unit 424 (second cut adjustment unit).

  In Embodiment 1, the first cross shaft adjusting portion 414 of the first drive shaft member 41 and the second cross cut adjusting portion 424 of the second drive shaft member 42 are fitted in the connecting portion in the axial direction. The slide fitting portion 43 is used.

  As shown in FIG. 7 (b), the axial lengths of the first cut adjustment part 414 and the second cut adjustment part 424 are obtained by fitting the slide fitting part 43 with the maximum fitting amount. The total length L1 of the first drive shaft member 41 and the second drive shaft member 42 is set to be shorter than the distance L2 between the first bearing portion 301 and the second bearing portion 302 of the frame 30.

  Then, the slide fitting state in which the total length L1 of the first drive shaft member 41 and the second drive shaft member 42 is shorter than the interval L2 between the first bearing portion 301 and the second bearing portion 302 of the frame 30 (FIG. 7 ( b)), the slide fitting amount is reduced to increase the total length L1, and the first shaft support portion 411 and the second shaft support portion 421 with respect to the first bearing portion 301 and the second bearing portion 302 of the frame 30 As shown in FIG. 7C, a stopper mechanism is provided that defines the axial position of both shaft support portions 411 and 421 as the final assembly position.

  As shown in FIG. 7 (b), the first bearing portion 301 and the second bearing portion 302 are composed of bearing cylindrical surfaces 301a and 302a and bearing inner end surfaces 301b and 302b having a larger diameter than the bearing cylindrical surfaces 301a and 302a. And bearing end surfaces 301c and 302c formed at the ends of the bearing cylindrical surfaces 301a and 302a, respectively.

As shown in FIG. 7 (b), the stopper mechanism is formed on each of the first shaft support portion 411 and the second shaft support portion 421, and has stepped convex surfaces 415 and 425 in contact with the bearing inner end surfaces 301b and 302b. Formed in each of the first shaft support portion 411 and the second shaft support portion 421, and during insertion, the diameter becomes smaller than the bearing cylindrical surfaces 301a and 302a due to elastic deformation inward, and when insertion is completed (FIG. 7 (c) ) And engaging claws 416 and 426 engaged with the bearing end surfaces 301c and 302c by elastic restoration.
As shown in FIGS. 5 and 6, the engaging claws 416 and 426 are provided at two positions in the circumferential direction.

  Next, the operation will be described.

[Assembly action]
When the slide drive mechanism F1 is assembled, first, the slide fitting portion 43 of the first drive shaft member 41 and the second drive shaft member 42 is fitted with the maximum fitting amount, and the first drive shaft member 41 and the above-mentioned The total length L1 of the second drive shaft member 42 is set to be shorter than the distance L2 between the first bearing portion 301 and the second bearing portion 302 of the frame 30.

  Then, the entire length L1 of the first drive shaft member 41 and the second drive shaft member 42 is set to a slide fitting state shorter than the bearing interval L2, and as shown in FIG. 7B, the first bearing portion 301 of the frame 30 and It arrange | positions in the position between the 2nd bearing parts 302. FIG.

  After that, the slide fitting amount of the slide fitting portion 43 is reduced from the state shown in FIG. 7B to increase the total length L1, and the first drive shaft with respect to the first bearing portion 301 and the second bearing portion 302 of the frame 30 is increased. The member 41 and the second drive shaft member 42 are inserted from the inside.

  By inserting the first drive shaft member 41 and the second drive shaft member 42 into the first bearing portion 301 and the second bearing portion 302 of the frame 30 from the inside, as shown in FIG. The axial positions of the drive shaft members 41 and 42 are defined as the final assembly position. That is, the stepped convex surfaces 415 and 425 formed on the first drive shaft member 41 and the second drive shaft member 42 are engaged with the bearing inner end surfaces 301b and 302b formed on the bearing portions 301 and 302, respectively. The position is restricted. Further, the engaging claws 416 and 426 formed on the first drive shaft member 41 and the second drive shaft member 42 are elastically deformed inward during the insertion, and are engaged with the bearing end faces 301c and 302c by elastic restoration when the insertion is completed. By doing so, the position in the shrinking direction is regulated.

  As described above, the first drive shaft member 41 and the second drive shaft member 42 are connected by the slide fitting portion 43 and the first bearing portion 301 and the second bearing portion 30 of the frame 30 are changed while changing the slide fitting amount. The slide drive mechanism F1 can be assembled by a simple operation by simply inserting the first drive shaft member 41 and the second drive shaft member 42 into the bearing portion 302 from the inside.

  That is, as in the conventional technique using an aluminum shaft for the slide drive mechanism, press fitting with a jig is not required at the time of assembly. For this reason, there is no possibility of a failure in the opening / closing operation due to the slide plate due to defective insertion of the aluminum shaft, or a failure of the opening / closing operation due to the slide plate due to resin shavings when inserting the aluminum shaft. The defect rate can be greatly reduced.

  Further, the slide fitting portion 43, which is a connecting portion, allows relative displacement in the axial direction while engaging the first drive shaft member 41 and the second drive shaft member 42 in the circumferential direction. Even in this case, the shaft can be centered while absorbing the dimensional variation due to the deformation of the frame 30. That is, even if the axial distance L2 between the first bearing portion 301 and the second bearing portion 302 on the frame 30 side becomes longer or shorter than the set interval due to the deformation of the frame 30, the slide This variation can be absorbed by the axial relative displacement of the fitting portion 43. Further, even if the axial center positions of the first bearing portion 301 and the second bearing portion 302 on the frame 30 side do not coincide with each other and a slight misalignment occurs due to the deformation of the frame 30, the circumferential direction of the slide fitting portion 43 and This misalignment can be absorbed by the amount of engagement play in the axial direction.

[Slide drive action]
When the slide plate 33 is slid and driven, a rotational driving force from a door actuator (not shown) is transmitted from one drive shaft member 41 or 42 to the other drive shaft member 42 or 41, and the first formed on the slide plate 33 The meshing position of the first pinion gear 412 meshing with the rack gear 31 and the second pinion gear 422 meshing with the second rack gear 32 changes, and the slide plate 33 slides along one side surface of the frame 30 accordingly. .

At the time of transmitting the driving force, the first driving shaft member 41 and the second driving shaft member 42 are connected by the slide fitting portion 43. Therefore, similarly to the assembly, the first bearing portion 301 on the frame 30 side is connected to the first driving shaft member 41 and the second driving shaft member 42. Even if a dimensional deviation occurs between the second bearing portion 302 and the driving force is transmitted, the deviation is absorbed and the shaft center is defined.
For this reason, the fluctuation | variation of the opening / closing operation torque by a twisting torque etc. is suppressed, and the smooth opening / closing slide operation | movement of the slide plate 33 can be ensured stably.

Next, the effect will be described.
In the air mix door 13 of the first embodiment, the effects listed below can be obtained.

  (1) A frame 30 in which an opening 30a is formed, a slide plate 33 that is disposed along one side surface of the frame 30 and in which rack gears 31 and 32 are formed, and a slide drive that slide-drives the slide plate 33 In the air mix door 13 including the mechanism F1, the slide drive mechanism F1 meshes with the rack gear 31 at least with a first shaft support portion 411 that is rotatably supported by the first bearing portion 301 of the frame 30. A first drive shaft member 41 having a pinion gear 412; a second drive shaft member 42 having a second shaft support portion 421 that is rotatably supported by at least the second bearing portion 302 of the frame 30; The first drive shaft member 41 and the second drive shaft member 42 are engaged with each other in the circumferential direction so as to transmit a drive force, and relative change in the axial direction between the drive shaft members 41 and 42 is provided. Because it has a connecting part that allows position, it can eliminate the need for press-fitting with a jig, reduce the defect rate, and absorb the variation in dimensions due to deformation of the frame 30 to stabilize smooth opening and closing slide operation Can be secured.

(2) The slide plate 33 has a first rack gear 31 and a second rack gear 32 as rack gears, and the first drive shaft member 41 is made of synthetic resin and rotates to the first bearing portion 301 of the frame 30. A first shaft support portion 411 that can be supported, a first pinion gear 412 meshing with the first rack gear 31, a first shaft portion 413 extending in the axial direction from the first pinion gear 412, and the first shaft portion 413, the first cross-cut adjusting portion 414 formed at the end position of 413, the second drive shaft member 42 is made of synthetic resin and is rotatably supported by the second bearing portion 302 of the frame 30. A second shaft support portion 421, a second pinion gear 422 meshing with the second rack gear 32, a second shaft portion 423 extending in the axial direction from the second pinion gear 422, and an end portion of the second shaft portion 423 Second cross-cut formed at the position A first cross-cut adjustment unit 414 of the first drive shaft member 41 and a second cross-cut adjustment unit 424 of the second drive shaft member 42. Since the slide fitting portion 43 fitted in the direction is used, it is possible to achieve a reduction in the number of parts, a high degree of sliding freedom, and compatibility with existing slide plates.
That is, the slide drive mechanism F1 can be constituted by two parts including the first drive shaft member 41 and the second drive shaft member 42, and compared with the conventional three-part structure including the aluminum shaft, the first pinion gear, and the second pinion gear. Points are reduced.
Further, since the connecting portion is the slide fitting portion 43 in which the first cross notch adjusting portion 414 and the second cross notch adjusting portion 424 are fitted in the axial direction, the degree of freedom of sliding is high, and in particular, the deviation in the axial direction is high. Absorption performance can be obtained.
Further, by adopting a configuration in which the first pinion gear 412 and the second pinion gear 422 are set at both ends, the slide plate having the conventional first rack gear and the second rack gear is left as it is, and the slide drive mechanism of the first embodiment is used. F1 can be employed.

  (3) The axial lengths of the first cruciform cut adjustment part 414 and the second cruciform cut adjustment part 424 are such that when the slide fitting part 43 is fitted with the maximum fitting amount, The total length L1 of the drive shaft member 41 and the second drive shaft member 42 is set to be shorter than the distance L2 between the first bearing portion 301 and the second bearing portion 302 of the frame 30, and the first drive shaft member 41 is set. From the slide fitting state in which the total length L1 by the second drive shaft member 42 is shorter than the distance L2 between the first bearing portion 301 and the second bearing portion 302 of the frame 30, the slide fitting amount is reduced to increase the total length L1. When the first drive shaft member 41 and the second drive shaft member 42 are inserted into the first bearing portion 301 and the second bearing portion 302 of the frame 30 from the inside, the shafts of both the drive shaft members 41 and 42 are assembled. Specify the direction position as the final assembly position Since the stopper mechanism is provided, when the slide drive mechanism F1 is assembled, the first drive shaft member 41 and the second drive shaft member 42 connected by the slide fitting portion 43 are changed in the slide fitting amount. Assembling is completed simply by inserting the first bearing portion 301 and the second bearing portion 302 from the inside, and good assembling workability can be obtained.

  (4) The first bearing portion 301 and the second bearing portion 302 include bearing cylindrical surfaces 301a and 302a, bearing inner end surfaces 301b and 302b having a larger diameter than the bearing cylindrical surfaces 301a and 302a, and the bearing cylindrical surface 301a. Bearing end surfaces 301c, 302c formed at the end portions of the first shaft support portion 411 and the second shaft support portion 421, respectively. Step convex surfaces 415 and 425 in contact with the end surfaces 301b and 302b, and the first shaft support portion 411 and the second shaft support portion 421 are formed on the first shaft support portion 411 and the second shaft support portion 421, respectively. And the engagement claws 416, 426 engaged with the bearing end surfaces 301c, 302c by elastic restoration when the insertion is completed, and the gear meshing position between the first pinion gear 412 and the first rack gear 31 and the second pinion gear 422. And the second rack gear 32 are engaged with each other. Moving is prevented, the sliding operation smoothly slide plate 33 can be maintained for a long time.

  The second embodiment is an example in which the connecting portion is an intermediate connecting member, and the slide driving mechanism is configured by three members, a first driving shaft member, a second driving shaft member, and an intermediate connecting member.

First, the configuration will be described.
8 is a perspective view showing the air mix door 13 of the second embodiment, and FIG. 9 is a perspective view showing a state in which the first drive shaft member, the second drive shaft member, and the intermediate connecting member of the air mix door 13 of the second embodiment are assembled. FIG. 10 and FIG. 10 are views showing an intermediate connecting member, where (a) shows a left side view and (b) shows a front view. FIG. 11 is a view showing the first drive shaft member and the second drive shaft member, where (a) shows a left side view, (b) shows a front view, and (c) shows a right side view. FIG. 12 is a view showing the first bearing split member and the second bearing split member, where (a) shows a left side view and (b) shows a front view. The slide drive mechanism F2 of the second embodiment is applied to the air mix door 13 of the vehicle air conditioning unit shown in FIGS. 1 and 2 as in the first embodiment. Here, the slide drive mechanism F2 is illustrated and described. Is omitted.

  As shown in FIG. 8, the slide drive mechanism F2 according to the second embodiment includes at least a first shaft support portion 511 that is rotatably supported by the first bearing portion 301 of the frame 30 and a pinion gear 512 that meshes with the rack gear 31. A first drive shaft member 51 having a second drive shaft member 52 having a second shaft support portion 521 that is rotatably supported by at least the second bearing portion 302 of the frame 30; Between the first drive shaft member 51 and the second drive shaft member 52, there is a connecting portion that engages with each other in the circumferential direction to transmit drive force and allow relative displacement in the axial direction of both drive shaft members. .

  As shown in FIG. 8, the slide plate 33 has a first rack gear 31 'and a second rack gear 32' as rack gears. 9 and 11, the first drive shaft member 51 is made of, for example, a synthetic resin such as POM (polyoxymethylene) containing glass fiber, and is attached to the first bearing portion 301 of the frame 30. A first shaft support portion 511 that is rotatably supported, a first pinion gear 512 that meshes with the first rack gear 31 ′, and a first shaft that connects the first pinion gear 512 and the first shaft support portion 511. Part 513 and a first slide fitting part 514 formed at the end position of the first pinion gear 512.

  As shown in FIGS. 9 and 11, the second drive shaft member 52 is made of, for example, a synthetic resin such as POM containing glass fiber and is rotatably supported by the second bearing portion 302 of the frame 30. A biaxial support portion 521, a second pinion gear 522 that meshes with the second rack gear 32 ', a second shaft portion 523 that connects the second pinion gear 522 and the second shaft support portion 521, and the second And a second slide fitting portion 524 formed at the end position of the pinion gear 522. That is, the first drive shaft member 51 and the second drive shaft member 52 have exactly the same configuration.

  As shown in FIG. 10 (b), the connecting portion is provided with third slide fitting portions 534 and 535 that are fitted in the axial direction to the first slide fitting portion 514 and the second slide fitting portion 524 at both ends. The intermediate connection members 53 are respectively provided in the above.

  As shown in FIGS. 9 and 10, the intermediate connecting member 53 is made of, for example, a synthetic resin such as POM containing glass fiber, and includes a third intermediate shaft portion 531 and both end portions of the third intermediate shaft portion 531. The third stopper projections 532 and 533 are formed so as to protrude to the outside, and the third slide fitting portions 534 and 535 are formed outside the third stopper projections 532 and 533.

  As shown in FIGS. 8, 9, and 12, the first bearing portion 301 and the second bearing portion 302 of the frame 30 are divided into a half-divided first bearing dividing member 301a ′ and a second bearing dividing member 302a ′. The frame 30 is formed by being inserted into and fixed to a halved first bearing surface 301b ′ and a second bearing surface 302b ′.

  Next, the operation will be described.

[Assembly action]
When the slide drive mechanism F2 is assembled, first, the third slide fitting portion 534 and the first slide fitting portion 514 are axially fitted to the intermediate connecting member 53 having the third slide fitting portions 534 and 535 at both ends. Thus, the first drive shaft member 51 is connected, and the second drive shaft member 52 is connected by fitting the third slide fitting portion 535 and the second slide fitting portion 524 in the axial direction.

  Then, as shown in FIG. 9, the first bearing split member 301 a ′ is inserted into the first shaft support portion 511 of the first drive shaft member 51, and the second shaft support portion 521 of the second drive shaft member 52 is inserted into the second shaft support portion 521. On the other hand, the second bearing split member 302a 'is inserted.

  Thereafter, as shown in FIG. 8, the first bearing split member 301 a ′ is inserted into and fixed to the half-divided first bearing surface 301 b ′ formed in the frame 30, and the second bearing split member 302 a ′ is formed in the frame 30. It is inserted and fixed to the split second bearing surface 302b ′.

  By inserting the first bearing split member 301a 'and the second bearing split member 302a' from the outside into the first bearing surface 301b 'and the second bearing surface 302b' of the frame 30, both in the expansion direction and in the contraction direction. As shown in FIG. 8, the first drive shaft member 51, the second drive shaft member 52, and the intermediate connecting member 53 are defined as the final assembly position.

  As described above, the first drive shaft member 51 and the second drive shaft member 52 are connected to the intermediate connection member 53 by slide fitting, and the first bearing surface 301b ′ and the second bearing surface 302b of the frame 30 are connected. The slide drive mechanism F2 can be assembled by a simple operation of simply inserting the first bearing split member 301a 'and the second bearing split member 302a' from the outside with respect to '.

  That is, as in the conventional technique using an aluminum shaft for the slide drive mechanism, press fitting with a jig is not required at the time of assembly. For this reason, there is no possibility of a failure in the opening / closing operation due to the slide plate due to defective insertion of the aluminum shaft, or a failure of the opening / closing operation due to the slide plate due to resin shavings when inserting the aluminum shaft. The defect rate can be greatly reduced.

  In addition, the slide fitting portion between the first drive shaft member 51 and the second drive shaft member 52 with respect to the intermediate connecting member 53 is a shaft that engages the first drive shaft member 51 and the second drive shaft member 52 in the circumferential direction. In order to allow relative displacement in the direction, the shaft can be centered while absorbing the variation in dimensions due to deformation of the frame 30 even when the number of jigs is reduced during assembly. That is, even if the axial distance L2 between the first bearing portion 301 and the second bearing portion 302 on the frame 30 side becomes longer or shorter than the set interval due to the deformation of the frame 30, the slide This variation can be absorbed by the axial relative displacement of the fitting portion 43. Further, even if the axial center positions of the first bearing portion 301 and the second bearing portion 302 on the frame 30 side do not coincide with each other and a slight misalignment occurs due to the deformation of the frame 30, the circumferential direction of the slide fitting portion 43 and This misalignment can be absorbed by the amount of engagement play in the axial direction.

  Furthermore, it is possible to easily cope with various frames having different sizes simply by preparing a plurality of members having different lengths as the intermediate connecting member 53. Since other operations are the same as those in the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the air mix door 13 of the second embodiment, in addition to the effect (1) of the first embodiment, the following effects can be obtained.

  (5) The first drive shaft member 51 is made of synthetic resin, and the first drive shaft member 51 meshes with the first rack gear 31 'and the first shaft support portion 511 rotatably supported by the first bearing portion 301 of the frame 30. A first pinion gear 512, a first shaft portion 513 connecting the first pinion gear 512 and the first shaft support portion 511, and a first slide fitting formed at an end position of the first pinion gear 512. The second drive shaft member 52 is made of synthetic resin and is rotatably supported by the second bearing portion 302 of the frame 30; and the second rack gear 32. A second pinion gear 522 that meshes with the second pinion gear 522, a second shaft portion 523 that connects the second pinion gear 522 and the second shaft support portion 521, and a second pinion gear 522 formed at an end position of the second pinion gear 522. 2 slide fitting portion 524, and the connecting portion is connected to the first slice. Since the intermediate connecting member 53 has the third slide fitting portions 534 and 535 that are fitted in the axial direction to the second fitting portion 514 and the second slide fitting portion 524, the intermediate connecting member 53 has different lengths. By preparing a plurality of members, it is possible to easily deal with various frames 30 without changing the first drive shaft member 51 and the second drive shaft member 52.

  (6) The intermediate connecting member 53 is made of synthetic resin, and includes a third intermediate shaft portion 531, third stopper protrusions 532 and 533 formed at both ends of the third intermediate shaft portion 531, and the third Third slide fitting portions 534 and 535 formed on the outer sides of the stopper protrusions 532 and 533, and the first bearing portion 301 and the second bearing portion 302 of the frame 30 are divided into a first divided bearing portion 301a ′ divided in half. Since the second bearing split member 302a ′ is configured by being inserted and fixed to the half-divided first bearing surface 301b ′ and the second bearing surface 302b ′ formed in the frame 30, when the slide drive mechanism F2 is assembled, The first drive shaft member 51 and the second drive shaft member 52 are connected to the connecting member 53, and the first bearing split member 301a ′ is connected to the first bearing surface 301b ′ and the second bearing surface 302b ′ of the frame 30. And the second bearing split member 302a ′ Just plug the in assembly is complete, it is possible to obtain good assembling workability.

  As mentioned above, although the sliding door apparatus of this invention has been demonstrated based on Example 1 and Example 2, it is not restricted to these Examples about a concrete structure, Each claim of a claim is a claim. Design changes and additions are allowed without departing from the gist of the invention.

  In the first and second embodiments, as an example of the slide drive mechanism, two slide gears and two pinion gears are engaged to slide the slide plate. For example, the slide plate is small and the slide guide is stable on the frame. In this case, one slide gear and one pinion gear may be engaged with each other to drive the slide plate.

  In the first embodiment, the connecting portion is a slide fitting portion, and in the second embodiment, the connecting portion is an intermediate connecting member. For example, the connecting portion between the first drive shaft member and the second drive shaft member is spline-fitted. It may be a joint portion or a serration coupling portion, and may be an intermediate connection expansion / contraction member provided between the first drive shaft member and the second drive shaft member. In short, the connecting portion engages with each other in the circumferential direction between the first drive shaft member and the second drive shaft member to transmit the driving force, and allows relative axial displacement of both drive shaft members. If so, it is not limited to the means shown in the first and second embodiments.

  In the first and second embodiments, the example in which the slide door device is applied to the air mix door of the vehicle air conditioning unit has been described. However, the slide door device according to the present invention can be applied to places that require various gate functions.

It is the schematic which shows the air conditioning unit for vehicles to which the air mix door (an example of a slide door apparatus) of Example 1 was applied. It is a perspective view which shows the air mix door in the air conditioning unit for vehicles. 1 is a perspective view showing an air mix door 13 of Embodiment 1. FIG. It is a perspective view which shows the state which assembled | attached the 1st drive shaft member and the 2nd drive shaft member of the air mix door 13 of Example 1. FIG. It is a figure which shows a 1st drive shaft member, (a) shows a left view, (b) shows a front view, (c) shows a right view. It is a figure which shows a 2nd drive shaft member, (a) shows a left view, (b) shows a front view, (c) shows a right view. It is a figure which shows the effect | action at the time of assembling | attaching a 1st drive shaft member and a 2nd drive shaft member with respect to a flame | frame, (a) shows the frame side view which assembled | attached the drive shaft member, (b) is a cross section before a shaft fitting A figure is shown and (c) shows a sectional view after fitting a shaft. 6 is a perspective view showing an air mix door 13 of Embodiment 2. FIG. It is a perspective view which shows the state which assembled | attached the 1st drive shaft member of the air mix door 13 of Example 2, the 2nd drive shaft member, and the intermediate connection member. It is a figure which shows an intermediate | middle connection member, (a) shows a left view, (b) shows a front view. It is a figure which shows a 1st drive shaft member and a 2nd drive shaft member, (a) shows a left view, (b) shows a front view, (c) shows a right view. It is a figure which shows a 1st bearing division member and a 2nd bearing division member, (a) shows a left view, (b) shows a front view.

Explanation of symbols

13 Air mix door (sliding door device)
30 frame 30a opening
301 1st bearing part
301a Bearing cylindrical surface
301b Bearing inner end face
301c Bearing end face
302 2nd bearing
302a Bearing cylindrical surface
302b Bearing inner end face
302c Bearing end face 31 First rack gear 32 Second rack gear 33 Slide plate F1 Slide drive mechanism 41 First drive shaft member
411 1st shaft support
412 1st pinion gear
413 1st shaft part
414 First cross cut adjustment section (first cut adjustment section)
415 Convex surface (stopper mechanism)
416 Engaging claw (stopper mechanism)
42 Second drive shaft member
421 Second shaft support
422 2nd pinion gear
423 Second shaft
424 Second cross cut adjustment section (second cut adjustment section)
425 Stepped convex surface (stopper mechanism)
426 Engaging claw (stopper mechanism)
43 Slide fitting part (connecting part)
31 '1st rack gear 32' 2nd rack gear 51 1st drive shaft member
511 First shaft support
512 First pinion gear
513 1st shaft part
514 First slide fitting portion 52 Second drive shaft member
521 Second shaft support
522 Second pinion gear
523 Second shaft
524 Second slide fitting portion 53 Intermediate connecting member
531 Third intermediate shaft
532,533 Third stopper projection
534,535 Third slide fitting
301a '1st bearing split member
302a 'Second bearing split member
301b '1st bearing surface
302b '2nd bearing surface

Claims (6)

In a slide door device comprising a frame in which an opening is formed, a slide plate arranged along one side of the frame and formed with a rack gear, and a slide drive mechanism for slidingly driving the slide plate,
The slide drive mechanism is
A first drive shaft member having at least a first shaft support portion rotatably supported by the first bearing portion of the frame; and a pinion gear meshing with the rack gear;
A second drive shaft member having a second shaft support portion rotatably supported by at least the second bearing portion of the frame;
With
Between the first drive shaft member and the second drive shaft member, there is a connecting portion that engages with each other in the circumferential direction to transmit a driving force and allow relative displacement in the axial direction of both drive shaft members. A sliding door device. The sliding door device according to claim 1,
The slide plate has a first rack gear and a second rack gear as rack gears,
The first drive shaft member is made of synthetic resin, and a first shaft support portion that is rotatably supported by a first bearing portion of the frame, a first pinion gear that meshes with the first rack gear, and the first pinion A first shaft portion extending in the axial direction from the gear, and a first notch adjustment portion formed at an end position of the first shaft portion,
The second drive shaft member is made of synthetic resin, and a second shaft support portion rotatably supported by a second bearing portion of the frame, a second pinion gear meshing with the second rack gear, and the second pinion A second shaft portion extending in the axial direction from the gear, and a second notch adjusting portion formed at an end position of the second shaft portion,
The connecting portion is a slide fitting portion in which a first cut adjustment portion of the first drive shaft member and a second cut adjustment portion of the second drive shaft member are fitted in the axial direction. Sliding door device. The sliding door device according to claim 2,
The axial lengths of the first incision adjusting portion and the second incision adjusting portion are set such that the first drive shaft member and the second drive when the slide fitting portion is fitted with a maximum fitting amount. The total length by the shaft member is set to be shorter than the interval between the first bearing portion and the second bearing portion of the frame,
The total length of the first drive shaft member and the second drive shaft member is reduced by reducing the slide fitting amount from the slide fitting state in which the total length of the frame is shorter than the distance between the first bearing portion and the second bearing portion of the frame, When the first drive shaft member and the second drive shaft member are inserted from the inside into the first bearing portion and the second bearing portion of the frame, the axial position of both drive shaft members is defined as the final assembly position. A sliding door device provided with a stopper mechanism. The sliding door device according to claim 3,
The first bearing portion and the second bearing portion each have a bearing cylindrical surface, a bearing inner end surface having a diameter larger than that of the bearing cylindrical surface, and a bearing end surface formed at an end portion of the bearing cylindrical surface. ,
The stopper mechanism is formed on each of the first shaft support portion and the second shaft support portion, and is provided on a step convex surface in contact with the bearing inner end surface, and on each of the first shaft support portion and the second shaft support portion. A sliding door device comprising an engaging claw that is formed and has a smaller diameter than the cylindrical surface of the bearing due to elastic deformation inward during insertion, and engages with the end face of the bearing by elastic recovery when insertion is completed. The sliding door device according to claim 1,
The first drive shaft member is made of synthetic resin, and a first shaft support portion rotatably supported by a first bearing portion of the frame, a first pinion gear meshing with the first rack gear, and the first pinion A first shaft portion connecting the gear and the first shaft support portion, and a first slide fitting portion formed at an end position of the first pinion gear,
The second drive shaft member is made of synthetic resin, and a second shaft support portion rotatably supported by the second bearing portion of the frame, a second pinion gear meshing with the second rack gear, and the second pinion A second shaft portion connecting the gear and the second shaft support portion, and a second slide fitting portion formed at an end position of the second pinion gear,
The connecting portion is an intermediate connecting member having a third slide fitting portion that is fitted in the axial direction to the first slide fitting portion and the second slide fitting portion at both ends. Sliding door device. The sliding door device according to claim 5,
The intermediate connecting member is made of synthetic resin, and is formed on the outer side of the third intermediate shaft portion, third stopper protrusions that protrude from both ends of the third intermediate shaft portion, and the third stopper protrusion. A third slide fitting portion,
The first bearing portion and the second bearing portion of the frame are formed by inserting the half-split first bearing split member and the second bearing split member into the half-split first bearing surface and the second bearing surface formed on the frame. A sliding door device characterized by being configured by being fixed.

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