JP2008030548A - Tray opening prevention mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tray opening prevention mechanism with low costs capable of surely preventing a lid from being undesirably opened under an external force. <P>SOLUTION: This tray has a structure that lids 11 (11a, 11b) are rotated upward or downward relative to a tray body so as to open or close an opening of the tray body. A latch pawl 12 of an operation knob 12 installed to the lid 11 comprises a lock mechanism 44 engaged with a latch receiving part 41 provided on the tray body side and maintaining a fully-closed condition of the lid 11. An opening-prevention rib 43 is provided on a rear side of a lid rear part adjacent to the lock mechanism 44. While the lid 11 is fully closed and an external force is applied on a surface of the lid 11, a fragile part is broken, the lid 11 is fitted in the depth direction, and the opening-prevention rib 43 is engaged with the undersurface of the latch receiving part 41 so as to prevent the lid 11 from opening. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tray opening prevention mechanism for preventing a lid of a tray installed on an instrument panel from being opened in consideration of a secondary collision between an occupant and an indoor structure caused by an impact such as a collision.

Considering secondary collisions between passengers and interior structures caused by impacts such as collisions, for example, in the vehicle interior impact regulation FMVSS201 in the United States, “the interior doors in the instrument panel or seat back are instrument panels or seats. The bag shall be closed when tested according to S5.1 (instrument panel impact) and S5.2 (seat back impact) "(excerpt).
Conventionally, in order to respond to such regulations, as described in Patent Document 1, when an external force is applied to the lid of the glove box, a lock mechanism that locks the lid in a closed state is known. In this lock mechanism, the lock device is made of a highly rigid material such as aluminum die cast so that the lid is not deformed and opened when an external force is applied.
JP 2001-98817 A (paragraph numbers 0042-0043 and FIG. 5)

  However, when the locking device as disclosed in Patent Document 1 is used, there is a problem that the manufacturing cost increases because the rigidity is increased by using aluminum die casting.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a low-cost tray opening prevention mechanism that can reliably prevent the lid from being undesirably opened due to an external force.

  In order to achieve the above object, according to the first aspect of the present invention, in the tray having a structure in which the lid is pivoted up or down relative to the tray body to open and close the opening of the tray body, the lid is opened by the external force of the lid. A tray opening prevention mechanism for preventing the lid, a rotating shaft for rotating the lid, an arm portion provided on the back surface of the lid at an interval and supported by the rotating shaft to rotate the lid, and a lid And a latch mechanism that engages a latch receiving portion provided on the tray body side to maintain a fully closed state of the lid, and at least one of the rotating shaft and the arm portion is fragile And an engaging portion is provided on the back side of the lid adjacent to the lock mechanism.When an external force is applied to the surface of the lid in the fully closed state of the lid, the fragile portion is broken and the engaging portion is Engaging the locking mechanism Characterized by preventing the opening of the lid.

  The invention described in claim 2 is further characterized in that the fragile portion is provided on a rotating shaft provided on the side wall of the tray body toward the left and right outer sides.

According to the present invention, when an external force is applied to the lid surface in the fully closed state of the lid, the engaging portion provided on the back surface side of the lid adjacent to the lock mechanism engages with the lock mechanism. Can be prevented from being undesirably opened.
As a result, the lid locking device itself as in the prior art is simpler in structure than the method of making aluminum die cast, for example. Can be provided.

Embodiments of the present invention will be described below with reference to the drawings as appropriate.
FIG. 1 is a schematic diagram of a passenger seat side instrument panel of a vehicle to which a tray opening prevention mechanism according to an embodiment of the present invention is applied.
In the present embodiment, as shown in FIG. 1, an example is shown in which the present invention is applied to a left-hand drive vehicle, but the present invention is not limited to this and can also be applied to a right-hand drive vehicle.
In the following, “left and right” and “up and down” are based on the state in which the tray 4 is attached to the vehicle. In the description of the configuration of the tray 4, as shown in FIG. 4, the front direction or the front side of the vehicle is referred to as the “back direction” or “back side” of the tray 4, and the rear direction or the rear side of the vehicle is “ It is referred to as “front side” or “front side”.

As shown in FIG. 1, an audio control panel 1 is arranged on the left side of FIG. 1 (near the center in the vehicle lateral direction), an instrument panel 3 is arranged on the right side thereof, and an air conditioner blower is arranged on the right side thereof. An outlet 5 is arranged. A glove box 7 is disposed under the instrument panel 3 and the blowout port 5.
The instrument panel 3 is substantially covered with the top resin plate 3a at the upper half, and the lower half of the instrument panel 3 is occupied by the fully closed lid 11. The instrument panel 3 has a tray 4 (see FIG. 2) in which the opening 22 can be opened and closed by the lid 11 at a portion covered with the lid 11. The lid 11 has an operation knob 12 for releasing a lock mechanism (not shown) that locks the lid 11 in a fully closed state near the left end.
Note that a latch receiving portion 41 that is latched by the operation knob 12 of the lock mechanism is provided at a corresponding location near the lower left end of the front side of the tray body 13 so as to extend obliquely downward (see FIG. 2).

FIG. 2 is a front view of the tray 4 from which the front resin plate 3a and the lid 11 of the instrument panel 3 of FIG. 1 are removed. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4 is a perspective view showing a configuration of the lid.
As shown in FIGS. 2 and 3, the tray 4 is fixed to the lid 11 (see FIG. 1), the tray body 13 mainly composed of the tray body lower part 25 and the tray body upper part 26, and the tray body upper part 26. And a connecting portion 14.

(Tray body configuration)
As shown in FIG. 3, the tray body 13 has a tray body lower portion 25 and a tray body upper portion 26, which are individually resin-molded, fixed by screws with a tapping screw 32A, and a tray portion 13a and a lid storage portion disposed thereon. This is a two-stage structure having two spaces 13b. A lid 11 is rotatably provided with a pivot (rotating shaft) 15 to be described later as a rotation center. By rotating the lid 11 upward, the lid 11 is stored in the lid storage portion 13b, and the tray 11 is rotated. The opening 22 of the part 13a is opened.
On the front side of the upper surface portion 26b constituting the lid storage portion 13b of the tray main body upper portion 26, a resin-made connecting portion 14 constituting the eaves structure is secured with a tapping screw 32B while ensuring a gap in which the lid 11 can be stored. It is the structure fixed by screws. Further, a front resin plate 3a of the instrument panel 3 is attached from above.

As shown in FIGS. 2 and 3, the tray body upper portion 26 has a predetermined length of the claw portion 21 along the left-right direction on the front side of the opening end upper side surface 26a facing the opening portion 22 of the tray portion 13a. A plurality of discrete projections are provided. The claw portion 21 is integrally formed with the reinforcing rib 21a (see FIG. 3) on the resin tray main body upper portion 26. Moreover, as shown in FIG. 3, the opening end lower side surface 25a facing the opening 22 of the tray portion 13a of the tray main body lower portion 25 is reinforced by a rib whose edge extends downward. .
In addition, the tray main body lower portion 25 projects the support shaft (rotating shaft) 15 formed integrally with the tray main body lower portion 25 on the outer side in the left-right direction of the left and right side walls 17 (see FIG. 5).
In the present embodiment, the tray main body 13 has a structure in which the tray main body lower portion 25 and the tray main body upper portion 26, which are individually resin-molded, are integrated by screw fixing, but is not limited thereto. The entire tray body 13 may be formed of an integral resin molding.

(Lid composition)
As shown in FIGS. 3 and 4, the lid 11 has a double structure of a lid front portion 11a constituting the front surface side (front side) of the lid 11 and a lid back portion 11b constituting the rear surface side (back side). It is a lid, and the lid front part 11a and the lid back part 11b are bonded to increase the strength of the lid 11.
Therefore, as shown in FIG. 4, a frame rib 23A is formed on the front side of the lid back portion 11b so as to protrude in the front direction (extend toward the lid front portion 11a side) and surround the four circumferences of the lid back portion 11b. And horizontal ribs 23B extending in the left-right direction and arranged in multiple stages. The frame ribs 23A and the horizontal ribs 23B are in contact with the rear surface (back side) of the lid front portion 11a and are fused to the lid front portion 11a.

As shown in FIG. 4, the upper frame rib 23A and the upper rib 23C are recessed downward at a portion corresponding to the position of the claw portion 21 when the lid 11 is in the fully closed state, and have an integral rib shape. The upper surface of the upper rib 23 </ b> C that is recessed downward constitutes a locking surface 24 a that engages with the claw portion 21. As shown in FIG. 3, the rib shape recessed downward of the upper rib 23 </ b> C has an inclined surface 24 b inclined downward on the back side of the locking surface 24 a (side approaching the claw portion 21). . The locking surface 24a and the inclined surface 24b constitute the locking portion 24, and when the lid 11 receives an external force and moves to the back side (when deformed inward) as described later, the claw portion 21 is formed. Rides on the inclined surface 24 and slides onto the locking surface 24 a to engage with the locking portion 24. The claw portion 21 and the locking portion 24 constitute the locking means of the present invention.
A detailed description of the engaging action between the claw portion 21 and the locking surface 24a and the inclined surface 24b will be described later.

The lid back portion 11b has a lock mechanism housing portion 36 for housing a lock mechanism 44 described later, which locks the lid 11 in a fully closed state, near the left end thereof (see FIG. 6). An operation knob hole 36a for the operation knob 12 for releasing the lock state of the lock mechanism 44 is provided in the lid back portion 11b. Further, the lid surface portion 11a is provided with an operation knob hole 11c in the lower portion near the left end in correspondence with the lock mechanism housing portion 36.
The lid back portion 11b is connected to an arm portion 16 extending to the support shaft 15 in the vicinity of the left and right ends thereof. That is, the arm portion 16 is provided on the back surface of the lid 11 with an interval. A detailed structure for receiving the arm portion 16 by the support shaft 15 and a detailed structure of the lock mechanism will be described later.

(Detailed configuration of support shaft and arm)
Next, the detailed configuration of the support shaft 15, the arm portion 16, and the like will be described with reference to FIGS. FIG. 5 is a perspective view showing the assembly of the lid and the lower portion of the tray main body from the front side. FIG. 6 is a perspective view showing the assembly of the lid and the lower portion of the tray main body from the back side. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 2 and shows the left arm portion from the left side. FIG. 8 is a cross-sectional view taken along the line CC in FIG. 2 and shows the left side wall of the tray body from the left side. FIG. 9 is a partial cross-sectional view taken along line DD in FIG.

  As shown in FIGS. 6 and 7, the arm portion 16 is made of a resin molded integrally with the lid back portion 11b, and has a bottomed honeycomb structure for increasing rigidity and strength. The side of the left and right arm portions 16 facing the side wall 17 of the tray main body lower portion 25 (the inner side in the left and right direction of the tray portion 13a) has a substantially flat surface, and the opposite side (the outer side in the left and right direction of the tray portion 13a). (On the other side) has a honeycomb structure. The arm portion 16 is provided on the side opposite to the side wall 17 (on the laterally outward side of the tray portion 13a) with an arm frame rib 18A that substantially surrounds the arm portion 16 and an arm cell rib 18B that surrounds each cell 16a of the honeycomb structure. have. With such a honeycomb structure, the arm portion 16 has a structure having sufficient strength against an external force from the lid 11 side and also against a bending stress.

As shown in FIGS. 6 and 7, support shaft holes 16 b are provided at positions corresponding to the support shafts 15 of the left and right arm portions 16 of the lid 11. Further, the arm portion 16 engages one end of a torsion coil spring 31 for facilitating the rotation of the lid 11 described later from the open state to the fully closed state on the obliquely upper back side near the support shaft hole 16b. It has a spring locking hole 16c as a spring seat.
The other end of the torsion coil spring 31 has a substantially circular loop shape, and is provided on the diagonally upper back side of the support shaft 15 of the left and right side walls 17 in the tray body lower portion 25, and is formed integrally with the side wall 17. It is inserted into the outer periphery of the columnar spring locking portion 17a.

As shown in FIGS. 5 and 6, the support shaft 15 has a cylindrical shape having a tapping hole 15 a and is formed integrally with the side wall 17.
As shown in FIG. 5 and FIG. 6, the support shaft 15 has support shaft ribs 15 b substantially radially at the base with the side wall 17, and the support shaft 15 is supported in a cantilever shape on the side wall 17 side. Although the bending strength is reinforced, the support rib 15b is not provided in the back direction (see FIG. 8). By adopting such a configuration, the support shaft 15 is weaker than the external force in the back direction compared to the case of the external force in the forward direction, the vertical direction, or the like, and the root in the back direction is broken. It has an easy structure. The arrangement of the support ribs 15b around the support shaft 15 constitutes the fragile portion of the present invention.
As shown in FIGS. 5 and 6, a cylindrical guide boss 33 concentric with the support shaft 15 is integrally formed on the side wall 17 around the support shaft 15.
A short reinforcing cylindrical portion 33a is provided concentrically outside the base of the guide boss 33 and rises from the side wall 17, and the outer peripheral surface of the guide boss 33 and the inner peripheral surface of the reinforcing cylindrical portion 33a are connected by radial reinforcing ribs 33b. ing. The guide boss 33, the reinforcing cylindrical portion 33a, and the reinforcing rib 33b are integrally formed on the side wall 17.

As shown in FIGS. 5 and 6, when the arm portion 16 is attached to the support shaft 15, a resin pressing member 19 is fitted into the support shaft hole 16b. The holding member 19 has a center hole 19b and a flange portion 19c on the bottomed end surface of the bottomed cylindrical portion 19a. Further, the inner diameter of the cylindrical portion 19 a corresponds to the outer diameter of the support shaft 15. The cylindrical portion 19a of the pressing member 19 is fitted into the supporting shaft hole 16b, and the supporting shaft 15 is fitted into the cylindrical portion 19a on the back surface side (the inner side in the left-right direction of the tray portion 13a) of the pressing member 19. By screwing the tapping screw 32C into the tapping hole 15a through the center hole 19b, the flange portion 19c of the pressing member 19 presses the edge of the supporting shaft hole 16b, and the end surface of the supporting shaft 15 contacts the bottom surface of the cylindrical portion 19a. Further, the tip end of the support rib 15b comes into contact with the end surface of the cylindrical portion 19a (see FIG. 9).
The arm portion 16 is between the inner peripheral surface of the support shaft hole 16b and the outer peripheral surface of the cylindrical portion 19a, and the arm portion 16 is between the left and right outer surfaces and the inner surface of the flange portion 19c and the end surface of the guide boss 33. , Can slide up and down.

On the inner surfaces of the left and right arm parts 16 (surfaces facing the side walls 17), they are raised in front of the guide bosses 33 and inward from the inner surfaces of the arm parts 16 (inward in the left-right direction of the tray part 13a). Further, a tongue-like locking projection 37 formed integrally with the arm portion 16 is provided.
The reinforcing ribs 33b provided around the guide boss 33 are radially arranged closer to the locking protrusion 37 (see FIG. 8) in the circumferential direction than in the other circumferential directions. .

(Detailed description of locking mechanism)
Next, a lock mechanism that locks the lid 11 in the fully closed state will be described with reference to FIGS. 3, 6, and 13 (a) as appropriate, with reference to FIG. 10.
(A) of FIG. 13 is the EE arrow partial sectional view in FIG.
The lock mechanism 44 is provided on the back side (back side) of the lid front part 11a, the back side of the lock mechanism 44 is covered by the lock mechanism housing part 36 of the lid back part 11b, and an operation knob hole 36a opened at the lower part thereof. The latch claw 12a extends to the lower back of the operation knob 12 (see FIGS. 6 and 13A).
The lock mechanism 44 mainly includes an operation knob 12, a knob support shaft arm 45, a knob support shaft pin 46, a torsion coil spring 47, and a latch receiving portion 41.

As shown in FIG. 10, the operation knob 12 is a member for releasing the lock state of the lock mechanism 44, and its main body is a resin plate having a substantially L-shaped cross section, and the resin plate having a substantially L-shaped cross section. The latch claw 12a extends substantially downward and has a tip bent obliquely upward. Then, the latch body 41 is provided below the latch receiving portion 41 provided in the extension portion extending leftward from the left side wall 17 of the tray main body lower portion 25 so as to extend obliquely downward and forward corresponding to the lock mechanism 44. The claw 12a is applied. The upper surface of the latch receiving portion 41 is an inclined surface 41a.
On the upper surface of the operation knob 12, two knob support pin receiving seats 12b facing the left and right directions of the operation knob 12 are integrally formed. The left knob support pin receiving seat 12b has a hole for receiving a knob support pin 46, which will be described later, opened to the left, and the right knob support pin receiving seat 12b has a hole receiving the knob support pin 46, opened to the right. is doing.

  From the back surface (back side surface) of the lid surface portion 11a, two knob support shaft arms 45 having a honeycomb structure with a bottom and molded integrally with the lid surface portion 11a at a predetermined interval are provided on the lower side. A pin hole 45 a is provided in the distal end portion of the knob support arm 45 so as to penetrate in the left-right direction. By inserting the knob support pin 46 into the holes of the opposing knob support pin receiving seats 12b through the two left and right pin holes 45a, the operation knob 12 moves up and down around the knob support pin 46 as the center of rotation. It can be rotated in the direction.

Further, the knob support arm 45 has a spring locking hole 45b in the vicinity of the connection portion with the lid surface portion 11a, and the operation knob 12 is located at a position closer to the front side than the knob support pin receiving seat 12b on the upper surface. A spring seat 12c is provided. Then, the ends of the two torsion coil springs 47a and 47b are integrally connected, and the torsion coil spring 47 provided with the end of the central portion is connected to the spring locking hole 45b of one knob support arm 45 at both ends. The end portion of the central portion of the torsion coil spring 47, which is hooked and connected to the torsion coil springs 47a and 47b, is hooked and mounted on the spring seat 12c.
The spring seat 12c of the operation knob 12 is biased downward by the spring force of the torsion coil spring 47, the lower surface of the operation knob 12 abuts on the lower edge of the operation knob hole 11c, and the operation knob 12 is further increased. Is controlled so as not to rotate downward. Then, the latch claw 12a of the operation knob 12 rises upward, the upper surface of the latch claw 12a comes into contact with the lower surface of the latch receiving portion 41, and the lid 11 is rotated upward to lock the opening 22 so that it is not opened. Put it in a state.

When the lid 11 is in the open state, when the lower surface of the operation knob 12 is pushed up with a finger, the operation knob 12 rotates upward with the knob support shaft pin 46 as the rotation center, and the latch claw 12a is lowered and its tip is a latch receiving portion. It is on the near side from 41, and the latch receiving part 41 is not hooked, and the lid 11 rotates as it is with the support shaft 15 as the rotation center, and is stored in the lid storage part 13b (see FIG. 3).
When the force that pushes up the lid 11 is released, the lid 11 is biased downward by the spring force of the torsion coil spring 31 (see FIG. 6) and rotated downward. At this time, when the lower surface of the latch claw 12a hits the latch receiving portion 41, it slides on the inclined surface 41a of the upper surface, the tip of the latch claw 12a reaches the lower side of the latch receiving portion 41, and the lid 11 is also in the lowest position. Until the opening 22 is fully closed. Then, the upper surface of the latch claw 12a and the lower surface of the latch receiving portion 41 are engaged with each other, and a locked state is established.

A knob seat 42 that is integrally formed so as to extend in the back direction from the back surface of the lid back portion 11b is provided at a position slightly below the knob support shaft arm 45 of the lid back portion 11b so as to be reinforced by the reinforcing rib 42a. When the operation knob 12 is pushed upward, the upper end of the operation knob 12 bent in an L shape is in contact with the lower surface of the knob seat 42 so that the operation knob 12 is further pushed upward. There are no restrictions.
Further, the operation knob hole 11c of the lid back portion 11b is integrally formed at a position corresponding to the latch receiving portion 41 on the slightly lower back side so as to extend in the back direction from the back surface (back side) of the lid back portion 11b. The opened release prevention rib 43 is reinforced by the reinforcement rib 43a. The release prevention rib 43 is arranged on the left side of the latch claw 12a so as not to overlap with the latch claw 12a extending downward from the rear side end of the operation knob 12 in parallel with the latch claw 12 and its The length up to the tip is configured so that the tip does not hook the latch receiving portion 41 when the lid 11 is normally opened and closed.

(Description of action)
Next, the behavior of the support shaft 15, the lid 11, and the lock mechanism 44 when an impact in the back direction is applied to the surface of the lid 11 will be described.
When a strong impact in the back direction is applied near the arm portion 16 on the surface of the lid 11, the arm portion 16 is pushed in the back direction as shown in FIG. 11A, and the support ribs 15 b around the support shaft 15 are moved. Since it is not arranged in the back direction and has a relatively fragile structure (see FIG. 8), as shown in FIG. 11 (b), the support shaft 15 is broken from the side wall 17 together with the support rib 15b. Separate and shift in the back direction (inward).
As a result, as shown in FIG. 12, the lid 11 is pushed inward, and the lower end 11d of the lid is guided to the opening end lower side surface 25a reinforced by a rib whose edge extends downward. The upper surface is slid and fitted into the opening 22. Moreover, the latching | locking part 24 corresponding to the said nail | claw part 21 of the upper rib 23C of the lid back part 11b is dented below, and has the inclined surface 24b inclined downward on the back side (back side). Therefore, the claw portion 21 comes into contact with the inclined surface 24b, slides and rides on the locking surface 24a, and the lower surface of the claw portion 21 and the locking surface 24a of the locking portion 24 are easily engaged with each other.

  Further, when an impact in the back direction is applied to the center portion of the surface of the lid 11, the support shaft 15 does not reach breakage, but the lid 11 is bent and deformed in the back direction (inwardly deformed). The lower surface of the claw portion 21 and the locking surface 24a of the locking portion 24 are easily engaged with each other.

  In the lid 11, the lower end 11 d of the lid and the engaging surface 24 a on the upper surface of the upper rib 23 </ b> C near the upper end of the lid 11 are strongly between the claw portion 21 of the opening end lower side surface 25 a and the opening end upper side surface 26 a, respectively. Therefore, after the lid 11 is fitted into the opening 22 by the frictional force, the lid 11 does not bounce back again, and the opening 22 does not open.

  Further, when a strong impact in the back direction is applied in the vicinity of the arm portion 16 on the left side of the surface of the lid 11, the lock mechanism 44 part moves the lid 11 in the back direction, that is, closer to the tray body 13 side. As shown in (b), the operation knob 12 hits the latch receiving portion 41 and rotates upward about the knob support pin 46. However, an opening prevention rib 43 is formed on the left side of the latch claw 12a, which is formed integrally with the back surface (back side) of the lid front portion 11b, in parallel with the latch claw 12a. Since the release prevention rib 43 is provided, the release prevention rib 43 bites into the lower surface side of the latch receiving portion 41 and engages with the latch receiving portion 41 independently of the state of the latch claw 12a. As a result, the opening prevention rib 43 locks the lid 11 so as not to be opened independently of the latch claw 12a.

According to the above embodiment, the tray 4 for the instrument panel 3 is not provided with a highly rigid lock mechanism made of, for example, an aluminum die cast as in the prior art, but as a lock mechanism 44 made of resin, When an impact in the back direction due to a collision or the like is applied to the surface of the lid 11 as an external force, the lid 11 fits into the opening 22 and does not open thereafter. At the same time, the latch receiving portion 41 of the lock mechanism 44 and the release preventing rib 43 are also strongly engaged, thereby reliably preventing the lid 11 from opening undesirably.
As a result, even in the light and inexpensive lock mechanism 44, for example, when the surface of the lid 11 is impacted by the claw portion 21 and the locking portion 24, or the release preventing rib 43 and the latch receiving portion 41, it is undesirable. It is possible to provide a mechanism for preventing the opening of the tray 4 in which the lid 11 is not opened.

  In particular, since the claw portion 21 is reinforced by the reinforcing rib 21a, the claw portion 21 has sufficient strength without being damaged even when engaged with the locking portion 24. Moreover, since the nail | claw part 21 and the latching | locking part 24 engage in several places in the left-right direction, sufficient holding force is obtained. Further, since the claw portion 21 and the locking portion 24 are provided at a plurality of locations in the left-right direction, an impact is applied to the surface of the lid 11 so that the support shaft 15 does not break and the lid 11 is in the back. Even in the case of bending deformation in the direction (deformation inward), the claw portion 21 and the locking portion 24 can be easily engaged with each other even if it is bent and deformed in any direction on the surface of the lid 11 in the left-right direction. Moreover, since the latching | locking part 24 is comprised by the latching surface 24a and the inclined surface 24b of the upper surface of the upper stage rib 23C, it has sufficient intensity | strength. Further, since the edge of the opening end lower side surface 25a is reinforced by a rib extending downward, a sufficient upward reaction force is generated even when the lid lower end 11d is fitted, Sufficient gripping force can be maintained between the claw portion 21 and the locking portion 24, and the lid 11 can be held between the opening end lower side surface 25a and the opening end upper side surface 26a.

In the present embodiment, the claw portion 21 is provided on the upper side of the opening portion 22, but is not limited thereto. Conversely, the claw portion 21 may be provided on the lower side of the opening portion 22 and the locking portion 24 may be provided below the lid back portion 11b so as to correspond thereto. Moreover, it may be provided on both the upper side and the lower side of the opening 22, and the locking part 24 may be provided on the upper and lower parts of the lid back part 11 b so as to correspond thereto.
Moreover, although the latch receiving part 41 and the opening prevention rib 43 shall be arrange | positioned only in the side in which the operation knob 12 was provided, it is not limited to it. Even if the latch receiving portion 41 is provided on the right-side extension portion of the lower right arm portion 16 of the tray body lower portion 25 where the operation knob 12 is not provided, and the opening prevention rib 43 is provided on the lid back portion 11b of the corresponding portion. Good.

In the present embodiment, the supporting rib 15b provided around the supporting shaft 15 is used as the fragile portion, but is not limited thereto. A weak portion may be provided in the arm frame rib 18A and the arm cell rib 18B of the arm portion 16 so that the arm 16 may be broken when an external force in the back direction acts on the surface of the lid 11.
Although the embodiments according to the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that appropriate modifications according to the gist of the invention are possible. For example, in the above-described embodiment, the opening 22 is configured to be opened by rotating the lid 11 upward from the fully closed state. However, the present invention is not limited to this, and the lid 11 can be opened from the fully closed state. You may comprise so that the opening part 22 may open by rotating toward the bottom.

1 is a schematic diagram of a passenger seat side instrument panel of a vehicle to which a tray opening prevention mechanism according to an embodiment of the present invention is applied. It is the front view of a tray which removed the surface part resin board and lid of the instrument panel. It is AA arrow sectional drawing in FIG. It is a perspective view which shows the structure of a lid. It is the perspective view which showed the assembly | attachment of the lid and the tray main body lower part from the near side. It is the perspective view which showed the assembly | attachment of the lid and the tray main body lower part from the back side. FIG. 3 is a cross-sectional view taken along the line B-B in FIG. 2, showing the left arm portion from the left side. It is CC sectional view taken on the line in FIG. 2, and is the figure which showed the left side wall of the tray main body from the left side. It is DD sectional view taken on the line in FIG. It is a fragmentary sectional perspective view explaining a locking mechanism. It is a figure explaining the fracture | rupture of a spindle. It is a figure explaining the fitting to the opening part of a lid. It is a fragmentary sectional view of a locking mechanism, (a) is an EE arrow partial sectional view in Drawing 2, and (b) is a behavior of a locking mechanism at the time of fitting in an opening of a lid in (a). FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Instrument panel 4 Tray 11 Lid 11a Lid front part 11b Lid back part 12 Operation knob 12a Latch claw 12b Knob spindle pin seat 13 Tray main body 15 Support axis (rotating axis)
15b Spindle rib (fragile part)
16 Arm part 17 Side wall 22 Opening part 41 Latch receiving part 43 Release prevention rib (engagement part)
43a Reinforcement rib 44 Lock mechanism 45 Knob spindle arm 45a Pin hole 46 Knob spindle pin 47 Torsion coil spring

Claims (2)

A tray opening prevention mechanism for preventing the lid from being opened by an external force in a tray having a structure in which the lid is rotated up or down relative to the tray body to open and close the opening of the tray body.
A rotating shaft for rotating the lid;
An arm portion that is provided on the back surface of the lid at an interval and supported by the rotating shaft to rotate the lid;
A locking mechanism in which a latch claw of an operation knob provided on the lid engages with a latch receiving portion provided on the tray body side to maintain the lid in a fully closed state;
With
At least one of the rotating shaft and the arm portion has a fragile portion,
An engaging portion is provided on the back side of the lid adjacent to the locking mechanism,
In the fully closed state of the lid, when an external force is applied to the surface of the lid, the fragile portion is broken and the engaging portion is engaged with the lock mechanism to prevent the lid from being opened. A tray opening prevention mechanism.   2. The tray opening prevention mechanism according to claim 1, wherein the fragile portion is provided on the rotating shaft provided on the side wall of the tray main body toward the left and right outer sides.

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