JP2007326480A - Indoor ceiling arrangement device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor ceiling arrangement device capable of suppressing reduction of speed at a finishing stage of opening motion while delaying the speed at an initial state of the opening motion of a movable member, reducing torque generated on the movable member by a spring when the movable member is positioned at a closure position, preventing the movable member from being stopped at a midway position without reaching to an opening position and setting a clearance between the movable member and a fixing member to a small degree. <P>SOLUTION: The indoor ceiling arrangement device 10 has the fixing member 20 provided with a bearing hole 22 and a fixing member side engagement receiving part 23 and arranged on the indoor ceiling; the movable member 30 provided with a turning shaft part 32 inserted to the bearing hole 22 and a movable member side engagement receiving part 34 and turnably and openably/closably provided on the fixing member 20; and a tension spring connected to the fixing member side engagement receiving part 23 and the movable member side engagement receiving part 34 such that torque in an opening direction generated on the movable member 30 is increased as the movable member 30 is turned to the opening position 30a side relative to the fixing member 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indoor ceiling placement device such as a vehicle storage device placed on an overhead console of a vehicle.

As shown in FIGS. 7 to 9, the conventional indoor ceiling arrangement apparatus 1 includes a fixing member 2 that is arranged on the indoor ceiling and includes a bearing hole 2 a, and a rotating shaft portion 3 a that is inserted into the bearing hole 2 a. 2, a movable member 3 that can be rotated and opened with respect to 2, a spring 4 that urges the movable member 3 to rotate in the opening direction with respect to the fixed member 2, and a fixed member 2 of the movable member 3. An oil damper 5 for reducing the rotation speed.
As shown in FIG. 9, the spring 4 is a torsion spring, and is provided on the outer side of the fixed member 2, a winding portion 4 a that is fitted to the rotating shaft portion 3 a of the movable member 3, and a first arm portion that is hooked on the fixed member 2. 4b and a second arm portion 4c that is hooked in a groove formed on the front end surface in the protruding direction of the rotating shaft portion 3a.

However, the conventional indoor ceiling arrangement apparatus 1 has the following problems.
(A) The torque generated in the movable member 3 by the spring 4 is large when the movable member 3 is in the closed position, and decreases as the movable member 3 opens. Further, the torque generated in the movable member 3 due to the weight of the movable member 3 is large when the movable member 3 is in the closed position, and decreases as the movable member 3 opens. Therefore, even if the spring 4 is adjusted, it is difficult to suppress the speed reduction at the end stage of opening while suppressing the speed at the initial stage of opening.
(B) The torque generated in the movable member 3 by the spring 4 is large when the movable member 3 is in the closed position. Therefore, there is a possibility that the rotating shaft portion 3a may be deformed and broken by the torque generated by the spring 4 when left at a high temperature.
(C) The torque generated in the movable member 3 by the spring 4 is large when the movable member 3 is in the closed position. Therefore, when the movable member 3 is in the closed position, the movable member 3 is thermally deformed, the design surface of the movable member 3 is lowered downward, and the design surface of the movable member 3 projects downward from the peripheral surface of the design surface and looks good. May get worse.
(D) The torque generated in the movable member 3 by the spring 4 decreases as the movable member 3 opens. For this reason, when the viscosity of the oil sealed in the oil damper 5 increases, such as at low temperatures, the movable member 3 may stop at an intermediate position without reaching the open position (without fully opening).
(E) Since the rotation shaft portion 3a is inserted into the bearing hole 2a and the movable member 3 is rotatable with respect to the fixed member 2, the rotation shaft portion 3a is slightly rattled in the bearing hole 2a. be able to. However, in the conventional indoor ceiling arrangement apparatus 1, it is unclear in which direction the rotating shaft portion 3a is urged by the spring 4 within the bearing hole 2a. Therefore, the clearance S between the movable member 3 and the fixed member 2 when the movable member 3 is in the closed position must be set large in consideration of the backlash in the bearing hole 2a of the rotation shaft portion 3a. I had to.
JP 2005-178664 A JP 2005-329734 A

The first object of the present invention is to reduce the speed at the end of the opening of the movable member while suppressing the speed at the initial stage of opening of the movable member as compared to the conventional ceiling. It is to provide a placement device.
A second object of the present invention is to provide an indoor ceiling arrangement device that can reduce the torque generated in the movable member by the spring when the movable member is in the closed position as compared with the conventional one.
A third object of the present invention is to provide an indoor ceiling arrangement device that can prevent a movable member from stopping at an intermediate position without reaching an open position.
A fourth object of the present invention is to provide an indoor ceiling arrangement device that can set the gap between the movable member and the fixed member to be smaller than that of the conventional one.

The present invention for achieving the above object is as follows.
(1) A fixing member provided with a bearing hole and a fixing member side engagement receiving portion and disposed on the indoor ceiling;
A movable member provided with a rotation shaft portion inserted into the bearing hole and a movable member side engagement receiving portion, and capable of being rotated and opened with respect to the fixed member;
The fixed member side engagement receiving portion and the movable member side engagement receiver are set such that an opening direction torque generated in the movable member increases as the movable member rotates toward the open position with respect to the fixed member. A tension spring connected to the section;
An indoor ceiling arrangement apparatus.

According to the indoor ceiling arrangement device of (1) above, the tension spring and the fixed member side engagement receiving portion are arranged so that the opening direction torque generated in the movable member increases as the movable member rotates toward the open position. Because it is connected to the movable member side engagement receiving portion, the speed at the initial stage of opening of the movable member is slower than the conventional speed, and the speed reduction at the end stage of opening of the movable member is lower than the conventional speed. Can be suppressed.
Further, the tension spring is connected to the fixed member side engagement receiving portion and the movable member side engagement receiving portion so that the opening direction torque generated in the movable member increases as the movable member rotates to the open position side. Therefore, the opening direction torque generated in the movable member by the tension spring when the movable member is in the closed position can be set to be smaller than in the prior art.
Further, the tension spring is connected to the fixed member side engagement receiving portion and the movable member side engagement receiving portion so that the opening direction torque generated in the movable member increases as the movable member rotates to the open position side. Therefore, by making the opening direction torque generated by the tension spring in the vicinity of the open position (the end stage of opening) larger than the opening direction torque by the spring in the vicinity of the conventional open position, the movable member is in the open position. It is possible to prevent the vehicle from stopping at an intermediate position without reaching.
Further, since the tension spring is used, it can be seen in which direction the rotating shaft portion of the movable member is urged within the bearing hole of the fixed member. As a result, there is no need to allow for play in the bearing hole of the rotating shaft portion, and the gap between the fixed member and the movable member can be set smaller than in the prior art.

FIGS. 1-5 has shown the indoor ceiling arrangement | positioning apparatus of the Example of this invention, and FIG. 6 has shown the modification of this invention Example.
The indoor ceiling arrangement device 10 according to the embodiment of the present invention is arranged (mounted) on the ceiling of a vehicle, for example. However, the indoor ceiling arrangement device 10 may be arranged (mounted) on the indoor ceiling of a house, an aircraft, a ship, or the like.
As shown in FIGS. 1 and 2, the indoor ceiling arrangement apparatus 10 includes a fixed member 20, a movable member 30, and a tension spring 40 that are arranged on the indoor ceiling. The indoor ceiling arrangement device 10 further includes an oil damper 50 and a lock device 60.

The fixed member 20 is, for example, a retainer or a case (box) that supports the movable member 30 so that the movable member 30 can be rotated and opened. The fixing member 20 is made of resin, for example. When the indoor ceiling arrangement device 10 is arranged on the ceiling of the vehicle, the fixing member 20 is formed integrally with the overhead console of the vehicle or formed separately from the overhead console and fixedly attached to the overhead console. .
The fixing member 20 includes a recess 21, a bearing hole 22, and a fixing member side engagement receiving portion 23.

As shown in FIG. 3, the recess 21 is open downward in the vertical direction. The movable member main body 31 of the movable member 30 can enter and leave the recess 21.
The bearing hole 22 is formed in both side walls 21 a that form the recess 21. The bearing hole 22 is formed through the side wall 21a.
As shown in FIG. 2, one end portion of the tension spring 40 is engaged with the fixed member side engagement receiving portion 23. The fixed member side engagement receiving portion 23 is formed of, for example, a groove, a hole, a notch, a hook, or the like formed in the fixed member 20. When the movable member 30 is in the closed position 30b, the fixed member side engagement receiving portion 23 is located within the plane where the tension spring 40 is provided and the movable member 30 engagement receiving portion of the movable member 30 is within the plane where the tension spring 40 is provided. 34 is provided on a straight extension line L (see FIG. 5) connecting to the line 34.

  As shown in FIGS. 1 and 3, the movable member 30 can be rotated and opened with respect to the fixed member 20. The movable member 30 is made of resin, for example. The rotation angle of the movable member 30 with respect to the fixed member 20 is 90 ° (including about 90 °). The movable member 30 includes a movable member main body 31, a rotating shaft portion 32 protruding from the side surface of the movable member main body 31, a gear member 33, and a movable member side engagement receiving portion 34 as shown in FIG. Prepare.

The movable member main body 31 is, for example, an accessory case, a conversation mirror, a switch panel, a small liquid crystal monitor panel, a card holder or the like (in the illustrated example, the case where the movable member main body 31 is an accessory case is shown).
The rotation shaft portion 32 is inserted into the bearing hole 22 as shown in FIG. The rotation shaft portion 32 may be formed integrally with the movable member main body 31, or may be formed separately from the movable member main body 31 and fixedly attached to the movable member main body 31. The rotation shaft portion 32 protrudes from the inside of the fixing member 20 (inside the recess 21) through the bearing hole 22 to the outside of the fixing member 20. Since the rotation shaft portion 32 is inserted into the bearing hole 22 and the movable member 30 is rotatable to the fixed member 20, the space between the outer peripheral surface of the rotation shaft portion 32 and the inner peripheral surface of the bearing hole 22. There are some gaps. Unlike the prior art, a torsion spring is not fitted to the rotation shaft portion 32 (the conventional torsion spring is not provided in the indoor ceiling arrangement apparatus 10 of the embodiment of the present invention).

  The gear member 33 is formed separately from the rotation shaft portion 32, and is fixedly attached to the front end surface in the protruding direction of the rotation shaft portion 32 outside the fixing member 20, as shown in FIG. . The gear member 33 is substantially fan-shaped, and a gear 33a that meshes with a damper gear (not shown) of the oil damper 50 is formed on the outer periphery.

The movable member side engagement receiving portion 34 is formed on the movable member main body 31 or the gear member 33 (in the illustrated example, the case where the movable member side engagement receiving portion 34 is formed on the gear member 33 is shown). Hereinafter, the case where the movable member side engagement receiving part 34 is formed in the gear member 33 is demonstrated.
The movable member side engagement receiving portion 34 includes a groove, a hole, a notch, a hook, and the like formed in the gear member 33. The movable member side engagement receiving portion 34 is formed at a position where the engagement between the gear 33 a and the damper gear is not hindered at or near the outer peripheral portion of the gear member 33.

  The tension spring 40 is, for example, a tension coil spring. However, the tension spring 40 is not limited to a coil spring, and may be rubber or the like as long as it is an elastic body. The tension spring 40 is connected to the fixed member side engagement receiving portion 23 and the movable member side engagement receiving portion 34 in a stretched state outside the fixed member 20. Since the tension spring 40 is connected to the fixed member side engagement receiving portion 23 and the movable member side engagement receiving portion 34, the movable member 30 is always moved to the fixed member side engagement receiving portion 23 side by the tension spring 40. Has been pulled (energized).

The tension spring 40 has a larger opening direction torque generated in the movable member 30 when the movable member 30 is in the open position 30a than the opening direction torque generated in the movable member 30 when the movable member 30 is in the closed position 30b. Thus, the fixed member side engagement receiving portion 23 and the movable member side engagement receiving portion 34 are connected to each other.
The tension spring 40 is movable with the fixed member side engagement receiving portion 23 so that the opening direction torque generated in the movable member 30 increases as the movable member 30 rotates toward the open position 30a with respect to the fixed member 20. It is connected to the member side engagement receiving portion 34.
The spring constant and the amount of deflection (the amount stretched from the free length) of the tension spring 40 are set so as to generate an appropriate tension (about 1 to 2 N) over the entire opening of the movable member 30.

The oil damper 50 is a damper in which oil is sealed. The oil damper 50 is fixedly attached to the outer surface of the side wall 21 a of the fixing member 20. The damper gear of the oil damper 50 is always meshed with the gear 33a.
The lock device 60 locks (holds) the movable member 30 with respect to the fixed member 20 at the closed position 30b, and also includes an unlock button 61 (see FIG. 1) provided at the center in the left-right direction of the indoor ceiling arrangement device 10. ) To unlock (by pushing in).

Next, the operation of the embodiment of the present invention will be described.
As shown in FIG. 5, the center of rotation of the movable member 30 is a point D, the part where the fixed member side engagement receiving part 23 is provided is the point E, and the part where the movable member side engagement receiving part 34 is provided is the point P. Assuming that the angle formed by the DPE is θ, the tension F of the tension spring 40 is θ as shown in the following equation (i) when the spring constant is k and the deflection amount of the tension spring 40 is S (θ). Expressed as a function.
F (θ) = k × S (θ) (i)
Further, the opening direction torque T generated in the movable member 30 by the tension spring 40 is represented by a function of θ as shown in the following equation (ii), where R is the distance between DP.
T (θ) = R × F (θ) × sin θ (ii)

In the embodiment of the present invention, since the fixed member side engagement receiving portion 23 is provided on the extension line L when the movable member 30 is in the closed position 30b, the DPE of the DPE when the movable member 30 is in the closed position 30b is provided. The angle θ formed is 0 °. From the above equation (ii), when θ = 0 °, sin θ = 0 and T (θ) = 0, so that the torque by the tension spring 40 is not generated when the movable member 30 is in the closed position 30b. As a result, the movable member 30 starts to open with the force of only its own weight, and starts to move at a slower acceleration than in the conventional case.
Further, as the movable member 30 opens, sin θ in the above equation (ii) increases from 0 to 1, and T (θ) increases. Therefore, the deceleration near the open position 30a (operation end stage) is alleviated compared to the conventional case, and the rotation speed can be maintained until the end.
Therefore, it is possible to suppress a decrease in speed at the end stage of opening of the movable member 30 as compared with the prior art while lowering (suppressing) the speed at the initial stage of opening of the movable member 30 as compared with the conventional one. As a result, the opening speed of the movable member 30 can be made constant over the entire opening range compared to the conventional case, and a high-quality operating impression can be given to the user.

  Since the torque by the tension spring 40 is not generated when the movable member 30 is in the closed position 30b, the movable member 30 can be prevented from being deformed and broken when left at a high temperature. Moreover, it can prevent that the design surface of the movable member 30 protrudes below from the surrounding surface of this design surface, and looks bad.

  Even when the oil viscosity of the oil damper 50 increases, such as at low temperatures, as the movable member 30 opens, sin θ in the above equation (ii) increases from 0 to 1 and T (θ) increases. Deceleration is relaxed and the rotational speed can be maintained up to the open position 30a (until the end). Therefore, it is possible to prevent the movable member 30 from stopping at an intermediate position without reaching the open position 30a.

  Since the movable member 30 is constantly urged toward the fixed member side engagement receiving portion 23 by the tension spring 40, the rotating shaft portion 22 is always urged toward the fixed member side engagement receiving portion 23 in the bearing hole 22. Is done. Therefore, there is no need to allow for play in the bearing hole 22 of the rotating shaft portion 32, and the gap between the fixed member 20 and the movable member 30 when the movable member 30 is in the closed position 30b (gap in FIG. 7). S) can be set smaller than in the prior art. As a result, it looks good.

  In the embodiment of the present invention, θ = 0 ° is shown when the movable member 30 is at the closed position 30b. However, the value of θ when the movable member 30 is at the closed position 30b is limited to 0 °. The position where the fixing member side engagement receiving portion 23 is provided (the position of the point E in FIG. 5) is changed in the vertical direction so that it can be changed within a range of about −20 ° to + 20 °. Good. For example, as shown in FIG. 6, by changing the position of the fixed member side engagement receiving portion 23 below the position in the embodiment of the present invention, θ of the movable member 30 at the closed position 30b can be obtained. When the value is negative, negative torque, that is, torque can be applied in the direction in which the movable member 30 is closed until the value of θ becomes 0 ° from the start of opening of the movable member 30. As a result, when the value of θ when the movable member 30 is at the closed position 30b is negative (in the case of FIG. 6), the value of θ when the movable member 30 is at the closed position 30b is 0 ° (FIG. 5). In this case, the acceleration at the initial stage of opening of the movable member 30 can be further suppressed.

  In the above-described embodiment of the present invention, the fixing member side engagement receiving portion 23 is provided only at one location on the fixing member 20, but there are a plurality of fixing member side engagement receiving portions 23 in the vertical direction. By providing it, a structure may be adopted in which the setting of θ can be selected at the stage of assembly without changing the design. In that case, the same indoor ceiling arrangement device 10 can cope with vehicles (vehicle types) having different mounting angles of the indoor ceiling arrangement device 10.

  In the embodiment of the present invention, the tension spring 40 is provided only on one side of the fixing member 20 in the left-right direction. However, the tension spring 40 is provided on both sides of the fixing member 20 in the left-right direction. Also good. In that case, a more stable opening speed can be obtained with respect to the weight change of the movable member 30.

It is a perspective view when a movable member exists in a closed position of the indoor ceiling arrangement | positioning apparatus of an Example of this invention. It is a perspective view when the movable member is in the closed position when viewed from an angle different from that in FIG. It is a perspective view when the movable member exists in an open position of the indoor ceiling arrangement | positioning apparatus of an Example of this invention. FIG. 4 is a perspective view of the indoor ceiling arrangement device of the embodiment of the present invention when viewed from an angle different from that in FIG. 3 when the movable member is in the open position. In the indoor ceiling arrangement apparatus of the embodiment of the present invention, the center of rotation of the movable member is point D, the part where the fixed member side engagement receiving part is provided is point E, and the part where the movable member side engagement receiving part is provided is point P. And when the angle formed by the DPE is θ, and the value of θ when the movable member is in the closed position is 0 °, it is a diagram showing the positional relationship of the DPE. In the indoor ceiling arrangement apparatus of the embodiment of the present invention, the center of rotation of the movable member is point D, the part where the fixed member side engagement receiving part is provided is point E, and the part where the movable member side engagement receiving part is provided is point P. And when the angle formed by the DPE is θ, the positional relationship of the DPE when the value of θ when the movable member is in the closed position is negative is shown. It is a perspective view when a movable member exists in a closed position of the conventional indoor ceiling arrangement | positioning apparatus. FIG. 8 is a perspective view of a conventional indoor ceiling arrangement device when viewed from an angle different from that in FIG. 7 when the movable member is in the closed position. It is a partial side view which shows the spring and its vicinity of the conventional indoor ceiling arrangement | positioning apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Indoor ceiling arrangement apparatus 20 Fixed member 21 Recessed part 21a Side wall 22 Bearing hole 23 Fixed member side engagement receiving part 30 Movable member 30a Open position 30b Closed position 31 Movable member main body 32 Rotating shaft part 33 Gear member 33a Gear 34 of gear member Movable member side engagement receiving portion 40 Tension spring 50 Oil damper 60 Lock device 61 Unlock button L The center of rotation of the movable member and the movable member side when the movable member is in the closed position within the plane where the tension spring is provided Straight line connecting the engagement receiver

Claims (1)

A fixing member having a bearing hole and a fixing member side engagement receiving portion and disposed on the indoor ceiling;
A movable member provided with a rotation shaft portion inserted into the bearing hole and a movable member side engagement receiving portion, and capable of being rotated and opened with respect to the fixed member;
The fixed member side engagement receiving portion and the movable member side engagement receiver are set such that an opening direction torque generated in the movable member increases as the movable member rotates toward the open position with respect to the fixed member. A tension spring connected to the section;
An indoor ceiling arrangement apparatus.

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