JP2005186753A - Opening/closing support structure for lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate rapid hitting of a lid to a partner part by controlling opening speed of the lid, to prevent generation of uncomfortable sound and to protect the lid in an opening/closing support structure for the lid provide on a luggage floor lower and a luggage side trim. <P>SOLUTION: An air damper 30 is arranged on an inner surface of the luggage floor lower 10 and a piston 32 of the air damper 30 and the inner surface of the lid 20 are connected by a wire 23. The opening speed of the lid 20 is suppressed by air resistance at sliding movement of the piston 32 in response to release operation of the lid 20. A spring member provided in a casing 31 of the air damper is constituted by using a spring member of specific shape such as cone-like compression coil spring 33 wherein spring pressure can be made small at half opening of release and the spring pressure can be largely acted at from the half opening to the whole opening. Thereby, opening speed can be relaxed at the whole area of the release angle of the lid 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lid opening / closing support structure attached to various interior panels provided in a vehicle, and in particular, the lid opening speed is controlled during lid opening operation, thereby protecting the lid and the lid. The present invention relates to a lid opening / closing support structure that ensures smooth operability.

  As shown in FIG. 10, a reclining space 3 for tilting the seat back 2 a of the seat 2 by a reclining operation is set behind the seat 2 in the coupe type vehicle 1, and the reclining space 3 and the luggage room 4 are A luggage floor lower 5 is provided for partitioning.

  As shown in FIG. 11, the luggage floor lower 5 is made of a plate-shaped synthetic resin molded body having a partitioning function, so that passengers can take in and out luggage from the luggage room 4 while sitting on the seat 2. The luggage floor lower 5 is provided with an opening 5a, and a lid 6 that covers the opening 5a is provided to be freely opened and closed. The lid 6 uses a plate body made of a synthetic resin injection molded body, and hinge shafts (not shown) provided on both sides of the lower end edge 6a are provided on both sides of the lower edge of the opening 5a of the luggage floor lower 5 which is an interior panel. 11 is configured so that it can be opened and closed in the direction of the arrow in FIG. Further, in order to adjust the opening speed of the lid 6, an air damper 7 is provided inside the luggage floor lower 5 to prevent a sudden increase in the opening speed of the lid 6.

  As a conventional example of the air damper 7, as shown in FIG. 12, a piston 7b is slidably accommodated in a hollow cylindrical casing 7a, and a wire 7c is interposed between the inner surface of the lid 6 and the piston 7b. When the lid 6 is opened and closed, the piston 7b slides in the casing 7a through the wire 7c in the direction of the arrow in FIG. 12, and at this time, the air in the air chamber 7d in the piston 7b passes through the orifice 7e. The air is discharged outside the air chamber 7d, and the sliding speed of the piston 7b is regulated by the air resistance at this time.

  In addition, a compression coil spring 7f is housed in the casing 7a, and the compression coil spring 7f moves the piston 7b to the left in proportion to the stroke amount when the piston 7b is pulled by the wire 7c and slides in the right direction in the figure. Press in the direction. Therefore, the opening speed of the lid 6 is smoothly controlled by the spring pressure of the compression coil spring 7f in addition to the air resistance (see, for example, Patent Document 1).

  Next, a conventional opening operation of the lid 6 will be described with reference to FIGS. First, as shown in FIG. 13A, in the state where the opening 5a of the luggage floor lower 5 is closed with the lid 6, the lid 6 may be inadvertently opened due to the pulling force of the air damper 7. Absent. And the state at the time of half-opening of the lid 6 which fell the lid 6 to the near side is shown in FIG.13 (b). At this time, the force of pulling the lid 6 toward the front side and opening it can suppress sudden opening of the lid 6 to some extent by the buffering action of the air damper 7. Further, FIG. 13C shows a state when the lid 6 is fully opened. From the half-open state to the fully-open state of the lid 6, similarly, the cushioning property of the air damper 7 is utilized to some extent. Can secure a state in which the opening speed of the lid 6 is suppressed.

JP 2000-145861 (page 4, FIG. 5)

  Thus, the lid 6 opening and closing support structure described above is supported so that the lid 6 can be opened and closed so as to cover the opening 5a of the luggage floor lower 5 with the lower end of the lid 6 as a hinge shaft, and the opening speed of the lid 6 is as follows. Although it is adjusted by the air damper 7, in the actual opening operation of the lid 6, as the opening angle of the lid 6 increases, that is, when the lid 6 is almost fully opened, the weight and acceleration of the lid 6 Etc., the opening speed of the lid 6 becomes very large, and the air damper 7 that takes into account the spring pressure of the existing compression coil spring 7f also suddenly moves to the back of the seat back 2a of the seat 2 that is an adjacent part. However, it has been pointed out that there are problems such as an unpleasant noise when the lid 6 is opened and damage to the lid 6.

  The present invention has been made in view of such circumstances, and in the lid opening / closing support structure that covers the opening of an interior panel such as a luggage floor lower, the opening speed of the entire lid opening operation is increased by the buffering action of the damper. Lid opening / closing support structure that can improve the smooth operability of the lid and the protection of the lid by adjusting and relaxing the opening speed of the lid from the point where the opening speed of the lid increases to the full opening point. The purpose is to provide.

  In order to achieve the above object, the present invention supports a lid that covers an opening of an interior panel provided in a vehicle so as to be openable and closable, and a cushioning action of an air damper attached to the inner surface of the interior panel. In the lid opening / closing support structure that regulates the opening speed, the air damper has a wire connected between the piston sliding inside the casing and the inner surface of the lid, and when the lid is opened, the piston slides inside the casing, In addition to exerting a buffering action due to air resistance when the piston slides, a specially shaped spring member is housed in the casing, and this spring member synergistically increases the repulsive force against the amount of compression stroke, At the initial opening, the resistance of the air damper is low, and the resistance of the air damper is increased from the half-open to full-open state of the lid. Characterized in that was.

  Here, the interior panel can be applied to an interior panel such as a luggage floor lower provided in the luggage room, a luggage side trim, or an instrument panel in a vehicle interior.

  Further, the lid that covers the opening of the interior panel is preferably an injection-molded body of synthetic resin such as polypropylene resin, but may be a composite resin plate or a structure in which a skin is adhered to the surface of a fiber plate. .

  Further, in order to regulate the opening speed of the lid, an air damper added to the interior panel is slidably installed in a hollow cylindrical casing, and a piston is slidably connected to the lid opening operation via a wire. The piston slides in the casing, but a buffering force acts during the sliding operation of the piston due to the resistance of air flowing into and out of the piston air chamber through the orifice provided in the piston. The spring member incorporated in the casing has a function that the spring pressure is small at the initial opening of the lid and the spring pressure increases rapidly from the half-opening to the full opening of the lid, for example, the compression stroke amount. On the other hand, it is preferable to use a non-cylindrical compression coil spring such as a conical compression coil spring which has a property that the repulsive force increases synergistically.

  According to the present invention, the lid is appropriately adjusted in its opening speed over the entire opening angle of the lid by the air damper having a unique shaped spring member, and the weight of the lid and the opening speed of the lid are increased. Thus, since the spring pressure of the spring member acts to increase synergistically, it is possible to mitigate the rapid opening speed of the lid.

  Therefore, when the lid is fully open, the lid does not suddenly collide with adjacent parts or the floor surface due to the air damper with an unusually shaped spring member as described above, and there is no impact sound (unpleasant sound), Smooth lid operability can be secured.

  As described above, in the lid opening / closing support structure according to the present invention, the lid that covers the opening of the interior panel is connected to the air damper via the wire, and the air damper is used for the lid opening operation. Accordingly, the piston in the casing slides, and the air resistance at that time restricts the rapid opening of the lid, and in particular, a spring such as a compression coil spring having a unique shape such as a conical shape built in the casing. The spring pressure is small when the lid is opened at the initial stage of the lid, and conversely, when the lid is opened close to the fully open position, the spring pressure acts firmly. It can effectively solve the conventional problem of suddenly colliding with the mating parts due to acceleration and acceleration, etc., and enables quiet and smooth lid opening and closing operations. It has the effect of increasing the protection of the mating parts.

  The best mode of the lid opening / closing support structure according to the present invention will be described below in detail with reference to the accompanying drawings.

  1 to 9 show an embodiment of the present invention. FIG. 1 is a perspective view showing a luggage floor lower and a lid provided in a luggage room of a vehicle, and FIG. 2 is a lid closure in the luggage floor lower. FIG. 3 is a cross-sectional view showing the structure of an air damper used for the lid opening / closing structure in the luggage floor lower, FIG. 4 is an explanatory view showing the state of the lid in the luggage floor lower when the lid is half open, and FIG. 5 is a sectional view showing the structure of the air damper when the lid is half open, FIG. 6 is an explanatory view showing the state when the lid is fully opened in the luggage floor lower, and FIG. 7 is the diagram showing the state of the air damper when the lid is fully opened. FIG. 8 is an explanatory view showing a configuration of an air damper in which the arrangement of the compression coil spring is changed, and FIGS. 9A and 9B show modified examples of the compression coil spring. It is a cross-sectional view.

  The luggage floor lower 10 in this embodiment is erected between the reclining space 3 of the seat back 2a in the seat 2 and the luggage room 4 as in the conventional example shown in FIG. The luggage floor lower 10 is made of an injection molded product of PP (polypropyne) resin, and the width dimension thereof is set slightly shorter than the width dimension of the luggage room 4, and the surface of the luggage floor lower 10 (sheet 2). Windows are set on the left and right sides of the surface facing each other. An opening 11 is formed in the right window, and a lid 20 that covers the opening 11 is supported so as to be freely opened and closed. The left window is a lid that does not open and close, and has an escutcheon-like meaning.

  By the way, the present invention is applied to an opening / closing support structure of the lid 20 that is supported by the luggage floor lower 10 so as to be freely opened and closed, and the relationship between the luggage floor lower 10 and the lid 20 will be described in detail below. First, the lid 20 is composed of an injection molded body of PP (polypropyne) resin, and is composed of a flat plate body with rounded corners so as to match the vertical and horizontal dimensions of the opening 11 so as to cover the opening 11. When the opening 11 is covered with the lid 20, a hinge shaft 21 that protrudes outward from both sides of the lower part is provided.

  When the luggage floor lower 10 supporting the lid 20 is accommodated at the edge of the opening 11 so as to cover the opening 11 with the lid 20, the product surface of the luggage floor lower 10 and the surface of the lid 20 are formed. A stepped flange 12 is formed along the periphery of the opening 11 so as to be substantially flush with each other. As a structure for supporting the lid 20 so as to be openable and closable, hinge shafts 21 projecting on both sides of the lower edge of the lid 20 are supported in bearing portions 13 provided on both lower sides of the opening 11, whereby the hinge shaft 21 is hinged. As a center, the lid 20 is rotatably supported.

  Further, in order to hold the lid 20 in the closed state shown in FIG. 2, a metal piece 22 is inserted into the upper center of the back side of the lid 20, and when the lid 20 is covered, the flange 12 corresponding to the metal piece 22 is inserted. A magnet 14 is inserted into the magnet. Therefore, in a state where the lid 20 is closed, the metal piece 22 is magnetically attracted to the magnet 14 and the holding state of the lid 20 is maintained.

  The lid 20 is connected to a wire 23 of an air damper 30 attached inside the luggage floor lower 10. Note that a locking portion 24 that locks one end 23 a of the wire 23 is provided on the inner surface of the lid 20. Further, in this embodiment, the air damper 30 uses an air damper in which a spring member is built in a hollow cylinder. However, the feature of the opening / closing support structure of the lid 20 according to the present invention is a conventional technique using the resistance of air. Note that it is difficult to control the opening speed of the lid 20 (especially the opening speed at the time of full opening) with the air damper 30, and particularly when the lid 20 is opened, due to its own weight or acceleration during the opening, It is characterized in that a new spring member is provided which makes it possible to relax the opening speed of the lid 20 from the point at which the opening speed rapidly increases to the point at which the lid 20 is fully opened.

  As shown in FIG. 3, the air damper 30 includes a piston 32 slidably housed in a hollow cylindrical casing 31, and a seal between the inner peripheral surface of the casing 31 and the outer peripheral surface of the piston 32. The O-ring 321 is mounted on the outer peripheral surface of the piston 32 in order to ensure the performance, and air resistance is generated when air flows in and out between the internal air chamber 322 of the piston 32 and the space in the casing 31. Orifices 323 and 324 to be formed are formed, and a wire coupling projection 325 for connecting the wire 23 and a spring mounting seat 326 for supporting the spring member are projected from the tip surface of the piston 32.

  On the other hand, a cap 311 is attached to one end surface of the casing 31, and an insertion hole 312 through which the wire 23 is inserted is formed in the cap 311. In the present invention, a conical compression coil spring 33 is used as a spring member that is built in the casing 31 and biases the piston 32.

  One end of the conical compression coil spring 33 has substantially the same diameter as the inner diameter of the casing 31 (referred to as a large diameter portion 33a), and is abutted against the tip surface of the casing 31 (actually, the inner peripheral edge of the cap 311). The other end of the compression coil spring 33 is set to a diameter (referred to as a small diameter portion 33b) that is not more than half the diameter of the large diameter portion 33a. The small diameter portion 33b is held by a spring mounting seat 326 on the tip surface of the piston 32. Yes. That is, the conical compression coil spring 33 having a spring characteristic that the rebound spring pressure increases synergistically with the compression stroke amount is used.

  Next, the opening / closing support structure of the lid 20 according to the present invention will be described in accordance with the opening operation of the lid 20. FIG. 4 is an explanatory diagram in which the lid 20 is operated from the state in which the opening 11 is closed to the state in the half-open state. FIG. 5 shows the configuration of the air damper 30 at that time. That is, as shown in FIG. 4, if the upper edge of the lid 20 that closes the opening 11 of the luggage floor lower 10 is pulled toward the front side to perform the opening operation, the lid 20 has an operating force in the initial opening. The weight of the lid 20 is added, and the lid 20 opens in the counterclockwise direction in FIG. 4 based on the hinge shaft 21.

  At this time, as shown in FIG. 5, since the piston 32 is pulled by the wire 23 in the air damper 30, the piston 32 slides in the casing 31, and the resistance of the air passing through the orifices 323 and 324 in the piston 32. Thus, the rapid opening of the lid 20 is suppressed, and in particular, since the portion near the large-diameter portion 33a of the conical compression coil spring 33 is easily bent, the spring pressure from the conical compression coil spring 33 is small. Between the closed state and the half-open state, a total resistance almost equal to the air resistance in the air damper 30 is generated, and the opening speed of the lid 20 until the half-open state can be slightly relaxed by this total resistance.

  Next, FIG. 6 is an explanatory view showing an operation state from the half-open state to the fully-open state of the lid 20, and FIG. 7 shows the configuration of the air damper 30 at that time. That is, in the opening operation from the half-opening state to the fully-opening state of the lid 20, an external force in the opening direction acts abruptly on the lid 20 due to an increase in the weight or acceleration of the lid 20, but as shown in FIG. When the lid 20 is fully opened from the half-open position, when the piston 32 in the casing 31 of the air damper 30 slides from the half-open position to the fully-open position of the lid 20, The opening speed of the lid 20 is reduced to some extent by the air resistance that air flows into and out of the casing 31 through the orifices 323 and 324, and in particular, the piston 32 slides from the position shown in FIG. 5 to the position shown in FIG. At this time, the portion near the small diameter portion 33b of the conical compression coil spring 33 is compressed. Therefore, unlike the state shown in FIG. 5, the conical compression coil spring 33 is compressed particularly in the vicinity of the small-diameter portion 33b, so that the rebound spring pressure from the conical compression coil spring 33 acts firmly, and the lid 20 Since the total resistance increases from the half-open time to the full-open time, the opening operation of the lid 20 can be firmly regulated.

  Accordingly, since the lid 20 does not suddenly hit the seat back 2a, a collision noise (unpleasant noise) does not occur, the lid 20 and adjacent parts can be reliably protected, and the entire opening angle by the lid 20 can be achieved. Smooth opening operation can be expected.

  Next, FIG. 8 shows a modification of the air damper 30, in which the conical compression coil spring 33 used in the above-described embodiment is accommodated in the casing 31 in the left-right reverse direction. Also in this modified example, the function of the air damper 30 is that the spring pressure of the conical compression coil spring 33 can be applied from the half-open state to the full-open state of the lid 20, so that the opening operation of the lid 20 can be controlled smoothly. It has.

  Further, in this modification, the conical compression coil spring 33 can be easily installed in the casing 31 by fitting the small diameter portion 33 b of the conical compression coil spring 33 into the flange 313 around the wire insertion hole 312 of the cap 311. In addition, it is not necessary to project the spring mounting seat 326 on the piston 32, and the structure of the piston 32 can be simplified.

  Next, FIGS. 9A and 9B show a modification of the spring member used in the present invention, and FIG. 9A shows a composite compression coil spring 33A combining a conical shape and a cylindrical shape. Yes, the diameter decreases from the large diameter portion 33a to the central portion 33c at a constant ratio, and the diameter is set constant from the central portion 33c to the small diameter portion 33b. FIG. 9B shows a substantially trumpet shape, in which a change in diameter on the side close to the large diameter portion 33a is set large, while a change in diameter on a portion close to the small diameter portion 33b is set small. A conical compression coil spring 33B is shown.

  Even in the case where the composite compression coil spring 33A or the deformed conical compression coil spring 33B described above is used, the spring pressure is small at the initial opening of the lid 20, and the spring pressure is from half open to full open. Since it increases rapidly, a smooth opening operation can be expected over the entire opening angle of the lid 20, and the lid 20 can be reliably protected.

  As described above, the lid opening / closing support structure according to the present invention is characterized in that a spring member having a unique shape such as a conical shape is employed in the air damper, and is applied to the lid opening / closing support structure in the luggage floor lower. It can be applied to a lid opening / closing support structure such as a tool storage box in a luggage side trim and a lid opening / closing support structure such as a glove box, and can be applied to a lid opening / closing support structure generally held by an interior panel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view illustrating a luggage floor lower and a lid supported by the luggage floor lower according to an embodiment to which the lid opening / closing support structure according to the present invention is applied. It is sectional drawing which shows the closed state of the lid in the luggage floor lower shown in FIG. It is sectional drawing which shows the structure of the air damper which regulates the opening speed of the lid in the luggage floor lower shown in FIG. It is explanatory drawing which shows the state at the time of the half open of the lid in the luggage floor lower shown in FIG. FIG. 5 is a cross-sectional view showing a configuration of an air damper in a state where the lid shown in FIG. 4 is half open. It is explanatory drawing which shows the state at the time of the fully open of the lid in the luggage floor lower shown in FIG. It is sectional drawing which shows the structure of the air damper in the state at the time of the fully open of the lid shown in FIG. It is sectional drawing which shows the structure of the modification which changed arrangement | positioning of the compression coil spring in the air damper shown in FIG. It is sectional drawing which shows the modification of the spring member in the opening-and-closing support structure of the lid concerning this invention. It is explanatory drawing which shows the vehicle rear part in a coupe type vehicle. It is a perspective view which shows the conventional luggage floor lower. It is description which shows the structure of the conventional air damper. The lid opening / closing operation in the conventional luggage floor lower is shown, and (a) the lid is closed, (b) the lid is half open, and (c) the lid is fully opened. is there.

Explanation of symbols

2 seat 2a seat back 4 luggage room 10 luggage floor lower 11 opening 12 peripheral flange 13 bearing 14 magnet 20 lid 21 hinge shaft 22 metal piece 23 wire 30 air damper 31 casing 311 cap 32 piston 321 O-ring 323, 324 orifice 326 spring Mounting seat 33 Conical compression coil spring 33a Large diameter portion 33b Small diameter portion

Claims (2)

The lid (20) that covers the opening (11) of the interior panel (10) provided in the vehicle is supported to be openable and closable, and the air damper (30) attached to the inner surface of the interior panel (10) has a buffering action, In the opening / closing support structure of the lid (20) in which the opening speed of the lid (20) is regulated,
The air damper (30) has a wire (23) connected between the piston (32) sliding inside the casing (31) and the inner surface of the lid (20). When the lid (20) is opened, the casing (31 ) The piston (32) slides inside and exhibits a buffering action due to air resistance when the piston (32) slides, and a spring member of a unique shape is housed in the casing (31), and this spring member is compressed. Since the repulsive force increases synergistically with the stroke amount, the resistance of the air damper (30) is small when the lid (20) is initially opened, and the air damper (30) is fully opened when the lid (20) is half open. 30) A lid opening / closing support structure characterized in that the resistance of 30) is increased. The lid opening / closing support structure according to claim 1, wherein the spring member housed in the casing (31) of the air damper (30) is a conical compression coil spring (33).

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