WO2010140646A1

WO2010140646A1 - Cover for closing opening

Info

Publication number: WO2010140646A1
Application number: PCT/JP2010/059412
Authority: WO
Inventors: 徹古賀
Original assignee: 株式会社ニフコ
Priority date: 2009-06-05
Filing date: 2010-06-03
Publication date: 2010-12-09
Also published as: JP2010280310A

Abstract

A cover for closing an opening, provided with a first member (8) and a second member (9) in order to close the opening (4) in a suspension tower top wall (2). The first member (8) is formed in a ring-like shape so as to correspond to the opening (4) and has at the lower part thereof engaging claws (15) for engaging with the inner peripheral edge (5a) of the opening (4). The second member (9) is provided with an insertion section (22) which is inserted in the first member (8) and, on the basis of the relationship of the engagement of the insertion section (22) with the first member (8), imposes the restriction on the rotation and separation of the insertion section (22) relative to the first member (8). The second member (9) is also provided with a lid section (21) for covering the opening (25) of the first member (8), and the insertion section (22) and the lid section (21) are integral with each other. Also, the insertion section (22) of the second member (9) is, when having established the state of the restriction, positioned so as to face the inner surfaces of the engaging claws (15) and minimizes the deflection of the engaging claws (15) of the first member (8) in the direction in which the engagement of the engaging claws (15) is released. The configuration enables the first member (8) and the second member (9) to be mounted in place only by a force which is required to mount the first member (8) to the opening (4) and a force which is required to mount the second member (9) to the first member (8), and after the mounting, a greater extraction force is required to remove the members from the opening.

Description

Cover for opening closure

The present invention relates to an opening closing cover that closes an opening or the like of a suspension tower top wall.

There is a suspension device cover that covers an outer cylinder that exists above the suspension device that penetrates the vehicle body side member and protrudes upward. In such a cover, as shown in Patent Document 1, in order to be able to regulate the relative relationship with the position of the vehicle body and to be excellent in retainability, the protrusions or recesses of the vehicle body side member are provided. A first engaging portion for positioning to be engaged; and a second engaging portion that is provided inside the cover continuously in the circumferential direction of the cover and engages with the outer peripheral surface of the outer cylinder. There has been proposed one comprising:

By the way, as an opening closing cover that covers the opening of the top wall of the suspension tower, there is a type that pushes into the periphery of the opening. In such an opening closing cover, if an attempt is made to increase the removal force of the cover (the force necessary to remove the cover from the opening or the like), it is possible to increase the thickness of the cover or use a hard material as the cover material. Conceivable.

Japanese Utility Model Registration Notification No.2-2654

However, if the cover is thickened or a hard material is used as the cover material in order to increase the cover removal force as described above, the cover insertion force (push-in force) will increase accordingly. As a result, the installation workability is reduced.

In order to solve the above-mentioned problems, the present invention is to provide a cover for closing an opening that can increase the removal force without deteriorating the mounting workability.

The present invention capable of solving the above problems
An opening closing cover for closing the opening,
The opening is formed in an annular shape corresponding to the opening, and a support portion is provided on one side of the axial center extending direction to be supported by the outer peripheral edge of the opening, and the opening is formed on the other side of the axial center extending direction. A first member provided with a locking claw for locking to the inner peripheral edge of the first member;
An insertion portion that establishes a restricted state with respect to relative rotation and separation relative to the first member by a locking relationship with the first member in a state of being inserted into the first member; and a proximal end side of the insertion portion A second member having a lid portion that is provided integrally and covers the opening of the first member when the insertion portion is inserted into the first member;
The insertion portion of the second member is configured to be disposed close to the inner surface of the locking claw when the insertion portion establishes the restricted state. A more preferable aspect of such an opening closing cover is as described in claim 2 and the following claims.

According to such an opening closing cover, the assembly of the first member to the opening, and the assembly of the second member to the first member assembled to the opening, the locking relationship between the opening and the first member, And it can carry out with the assembling force based on each independent locking relationship of the locking relationship of the 1st member and the 2nd member. Therefore, when assembling the first member and the second member with respect to the opening, it is necessary for assembling force required for assembling the first member to the opening or for assembling the second member to the first member. Does not require a large assembly force that exceeds the assembly force. In addition, after the first member and the second member are integrally assembled in the opening as a cover (after the regulation state is established), the insertion portion of the second member is the inner surface of the locking claw of the first member. The locking claw of the first member is restrained from bending in the locking release direction, and the locking claw can be reinforced with respect to the inner peripheral edge of the opening to be reinforced most. . For this reason, the extraction force as the whole said cover can be raised, without reducing attachment workability | operativity.

Moreover, the cover for opening obstruction | occlusion of this invention is the 2nd member by rotating the insertion part of a 2nd member relatively with respect to a 1st member, after inserting the insertion part of a 2nd member in a 1st member. It is preferable that the insertion portion is set so as to reach the establishment position of the restricted state. Thereby, the assembler who assembles the opening closing cover of the present invention into the opening performs two operations in different directions in order to realize the restricted state. Therefore, the assembler can easily recognize that the assembling work has been performed accurately by performing these two different operations.
In the opening closing cover of the present invention, after the insertion portion of the second member is inserted into the first member, the insertion portion of the second member is rotated relative to the first member, and finally inserted. The portion will be placed close to the inner surface of the locking claw. Therefore, as the portion where the insertion portion of the second member slides with respect to the first member, it is sufficient that at least a portion that faces the inner surface of the locking claw is secured. There is no need to slide all around. For this reason, the sliding resistance of the 2nd member with respect to the 1st member becomes small, and the assembly of the 2nd member to the 1st member becomes easy.

Moreover, the cover for opening obstruction | occlusion of this invention is provided with a convex part in any one surface of the internal peripheral surface of a 1st member, or the outer peripheral surface of an insertion part, and the outer periphery of the internal peripheral surface of a 1st member, or an insertion part. On the other surface of the surface, an entry groove that allows the projection to enter with the relative rotation of the second member relative to the first member is formed, and when the insertion portion reaches the establishment position of the restricted state, the projection is It is preferable to restrict the first member and the second member from being separated from each other in the direction in which the first member extends in the axial direction by entering the entry groove. Thereby, in a state where the first member and the second member are in the restricted state establishment position, the first member and the second member are mutually extended in the axial center extending direction of the first member using the protrusion and the entry groove. It can control more reliably that it moves so that it may space apart. For this reason, based on the locking relationship between the convex portion and the inner wall of the entrance groove, the locking force can be significantly increased compared to the case where the locking piece is used, and the entire cover (specifically, the first member) The pulling force can be increased not only in the case of directly gripping and pulling, but also in the mode of pulling out the entire cover by pulling the second member.

In the opening closing cover of the present invention, a rotation restricting portion that comes into contact with the convex portion with the relative rotation of the second member with respect to the first member is provided in the entry groove, A raised portion that gradually rises toward the convex portion is formed on the opposite surface of the distal end surface of the rotation restricting portion that moves with the relative rotation of the second member with respect to the first member. A vertical groove is formed between them, and at least one of the raised part or the rotation restricting part can be deformed. When the insertion part reaches the establishment position of the restricted state, the rotation restricting part gets over the raised part, and It is preferable to enter. Thus, in the restricted state establishment position, the first member and the second member can not only specifically regulate the relative movement of the first member in the axial direction of the first member, but also the rotation restricting portion, the swell The relative rotation of the first member and the second member can be specifically regulated by using a portion, a convex portion, a longitudinal groove, and the like.

In the opening closing cover according to the present invention, the first member is provided with two or more locking claws at an interval, and the insertion portion of the second member corresponds to the plurality of locking claws in the radial direction. When the bulging top surface of each bulging portion reaches the position where the restricting state is established, the bulging top surface of each bulging portion has a shape that bulges radially outward from the inner side. It is preferable to be disposed close to the inner surface. As a result, the locking of the plurality of locking claws with respect to the inner peripheral edge of the opening can be supported by the bulging top surfaces of the plurality of bulging portions, respectively, and the holding force of the entire cover with respect to the opening can be significantly increased. Can do.

In the opening closing cover according to the present invention, the portion on the other side of the first member in the axially extending direction of the first member relative to the support portion of the first member can be inserted into the opening. By inserting the insertion portion of the second member into the first member, the insertion portion reaches the position where the restricted state is established, and the locking claw of the first member flexes outward in the radial direction of the first member. Preferably. Thereby, when assembling the first member in the opening, the locking claw can be set in the opening with almost no bending. In addition, after setting the first member in the opening, a part of the locking force (flexing force or the like) for locking the second member to the first member is deformed by the deformation (opening of the locking claw of the first member). By utilizing it for bending deformation for locking to the inner peripheral edge of the first member, the locking claw of the first member can be locked to the inner peripheral edge of the opening. Therefore, since the assembly force required for the assembly of the second member to the first member can be reduced, the assembly can be easily performed. In addition, after the assembly in which the first member and the second member are integrally assembled in the opening as a cover, the insertion portion of the second member supports the inner surface of the locking claw of the first member, It can prevent that the latching claw of 1 member bends in the direction which remove | deviates from the inner peripheral edge part of opening. Therefore, the locking state of the opening of the locking claw of the first member is reinforced by reinforcing the locking claw of the first member locked to the inner peripheral edge of the opening. The removal force of the entire cover with respect to the opening can be increased without lowering.
Further, when the locking claw of the first member is locked to the inner peripheral edge of the opening, the insertion portion of the second member bends the locking claw of the first member outward in the radial direction of the first member. The allowable range of the diameter of the opening to which the cover can be attached is increased.

In the opening closing cover of the present invention, the insertion portion of the second member includes a locking claw with the claw portion facing outward, and the locking claw in the first member includes the outer surface of the locking claw. In addition to the outer claw portion of the first member, the inner claw portion is provided on the inner surface of the locking claw in the first member, and when the insertion portion reaches the established position of the restricted state, the claw portion of the locking claw in the second member is It is preferable that the latching claw in the first member bend outward in the radial direction of the first member while being latched by the inner claw portion of the latching claw in the first member. Accordingly, the same effect as described above can be achieved by the locking claw of the first member provided with the outer claw portion and the inner claw portion and the locking claw of the second member with the claw portion facing outward. it can.
Further, with such a configuration, the second member is pulled in order to release the engagement between the engagement claw of the second member and the engagement claw (inner claw portion) of the first member. After the locking claw of the first member that is locked to the inner peripheral edge portion of the opening in a state of being forced is removed from the inner peripheral edge portion of the opening, the engagement between the locking claw of the first member and the second member The locking with the pawl needs to be released. At this time, in addition to the releasing force for releasing the locking relationship between the locking claw of the first member and the locking claw of the second member, the locking claw of the first member is released from the inner peripheral edge of the opening. Release force is also required. Therefore, not only the removal force required for directly grasping and pulling out the entire cover (specifically, the first member), but also the removal force required for pulling out the entire cover by pulling the second member can be increased. it can.
Further, the opening closing cover of the present invention has a configuration in which the locking claw of the first member is locked to the inner peripheral edge of the opening and the locking claw of the second member is locked to the locking claw of the first member. Therefore, since the locking claw of the first member and the locking claw of the second member can be bent as necessary, the tolerance of the diameter of the opening for attaching the cover can be further increased.

In the opening closing cover of the present invention, the locking claw of the first member is inserted while being bent with respect to the opening, and the insertion portion of the second member is a locking claw with the claw portion facing outward. The locking claw of the first member is provided with an inner claw portion on the inner surface of the locking claw in addition to the outer claw portion of the outer surface of the locking claw, and the second member includes the second member. It is preferable that a locking claw having a claw portion that is locked to the inner claw portion of the locking claw in the first member when the insertion portion reaches the position where the restriction state is established is provided. As a result, each of the assembly of the first member to the opening and the assembly of the second member to the first member can be performed with only a single assembly force (based on the normal bending of the locking claw). It can be carried out. On the other hand, utilizing the fact that the claw portion of the locking claw of the second member is locked to the inner claw portion of the first member, the locking claw of the first member is released in a direction away from the inner peripheral edge portion of the opening. Bending can be suppressed. For this reason, also in this case, the removal force as the whole cover can be increased without deteriorating the mounting workability.
At this time, in order to release the locking claw of the second member and the locking claw (inner side claw portion) of the first member by pulling the second member, After the locking claw of the first member locked to the peripheral edge is forcibly removed from the inner peripheral edge of the opening, the locking claw of the first member and the locking claw of the second member are locked. Therefore, in addition to the releasing force for releasing the locking relationship between the locking claw of the first member and the locking claw of the second member, the engagement of the first member from the inner peripheral edge of the opening is required. Release force to release the pawl is also required. Therefore, not only the removal force required for directly grasping and pulling out the entire cover (specifically, the first member), but also the removal force required for pulling out the entire cover by pulling the second member can be increased. it can.
Further, when the cover is held in the opening, the locking claw of the first member is locked to the inner peripheral edge of the opening, and the locking claw of the second member is locked to the locking claw of the first member. Therefore, since the locking claw of the first member and the locking claw of the second member can be bent as necessary, the allowable range of the opening to which the opening closing cover of the present invention can be attached is further increased. growing.

In the opening closing cover of the present invention, the first member is provided at a position where the claw portion faces inward and the claw portion is higher than the inner claw portion of the locking claw of the first member. It is preferable that a plurality of temporary holding claws are provided, and the second member is temporarily held by the claw portions of the plurality of temporary holding claws in the first member to form a temporary holding set body. Thereby, the handling object can be made into one temporary holding set body, handling property can be improved and assembly workability | operativity can be improved.

Further, in the opening closing cover of the present invention, it is preferable that two or more of the locking claws of the first member and the locking claws of the second member are provided at intervals. The locking of the plurality of locking claws of the first member with respect to the inner peripheral edge of the opening can be increased by the plurality of locking claws of the second member, respectively, and the holding force of the first member with respect to the opening can be significantly increased.

Also, the opening closing cover of the present invention can be attached to the opening of the suspension tower top wall. Therefore, the opening closing cover of the present invention is excellent in mounting workability and has a large extraction force even when the suspension tower top wall is closed.

The perspective view which shows the state by which the cover was attached to the top wall of the suspension tower which concerns on 1st Embodiment. The longitudinal cross-sectional view of the suspension tower which concerns on 1st Embodiment. The perspective view which shows the 1st member which concerns on 1st Embodiment. The perspective view which shows the state by which the 1st member was attached to the top wall of the suspension tower which concerns on 1st Embodiment. The figure which expanded the X5-X5 cross section of FIG. The perspective view which shows the 2nd member which concerns on 1st Embodiment. The bottom view which shows the 2nd member which concerns on 1st Embodiment. X8-X8 sectional view of FIG. Explanatory drawing which shows the assembly | attachment of the 1st member which concerns on 1st Embodiment with respect to opening of a suspension tower top wall, and a 2nd member. The cross-sectional view showing the initial state of insertion in which the second member is inserted into the first member according to the first embodiment. Explanatory drawing explaining the final state for attaching the 2nd member with respect to the inside of the 1st member. The perspective view which shows the temporary holding set body which concerns on 2nd Embodiment. Explanatory drawing which shows having put the temporary holding set body of FIG. 12 into the final assembly | attachment state by applying pushing force. The perspective view which shows the 1st member which concerns on 2nd Embodiment. The top view which shows the 1st member which concerns on 2nd Embodiment. The perspective view which shows the 2nd member which concerns on 2nd Embodiment. The bottom view showing the 2nd member concerning a 2nd embodiment. Explanatory drawing which shows the assembly | attachment of the temporary holding set body which concerns on 2nd Embodiment with respect to opening of a suspension tower top wall. The operation state explanatory view explaining the operation state of the first temporary holding claw 34 and the locking

claws

15, 34. FIG. 20 is an operation state explanatory diagram illustrating the continuation of FIG. 19. FIG. 21 is an operation state explanatory diagram illustrating the continuation of FIG. 20. FIG. 22 is an operation state explanatory diagram illustrating the continuation of FIG. 21. The longitudinal cross-sectional view which shows the state by which the cover which concerns on 2nd Embodiment was finally assembled | attached with respect to opening of the suspension tower top wall.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 11 show a first embodiment. 1 and 2, reference numeral 1 denotes a suspension tower, and 2 denotes a top wall thereof. A suspension device 3 such as a shock absorber is accommodated in the suspension tower 1, and the upper portion of the suspension device 3 is supported by the top wall 2 of the suspension tower 1. A substantially circular opening 4 is formed in the top wall 2 of the suspension tower 1, and the peripheral edge part 5 of the opening has a standing peripheral wall part (outer peripheral edge part) 6 rising slightly upward. . A cover 7 according to the present embodiment is attached to the peripheral edge 5 of the opening, and the cover 7 closes the opening 4.

As shown in FIGS. 1 and 2, the cover 7 includes a ring-shaped first member 8 having a circular opening inside, and a second member 9 assembled in the first member 8. Yes. The first member 8 is formed of, for example, resin (for example, 6-6 nylon), and as shown in FIG. 3, the upper wall portion 10 as a support portion formed in a ring shape with a certain width, and the upper wall portion 10 An outer peripheral wall portion 11 extending vertically downward with respect to the upper wall portion 10 from an outer peripheral portion in the radial direction, and an inner peripheral wall portion 12 extending vertically downward with respect to the upper wall portion 10 from an inner edge portion in the radial direction of the upper wall portion 10. (Inner peripheral surface). These form a ring-shaped groove 13 that opens downward, and by using the ring-shaped groove 13 to insert the upright peripheral wall portion 6 into the groove 13, the first member 8 is Then, it is held by the upright peripheral wall portion 6 (see FIGS. 2, 4 and 5).

At this time, the upper wall portion 10 of the first member 8 is disposed on the upright circumferential wall portion 6 as shown in FIGS. As shown in FIG. 3, a plurality of (four in the present embodiment) long holes 14 penetrating vertically are formed in the upper wall portion 10 to absorb deformation of the first member 8, The long holes 14 are longer in the circumferential direction than the radial direction of the upper wall portion 10, and a plurality of the long holes 14 are provided at equal intervals along the circumferential direction of the upper wall portion 10. The outer peripheral wall portion 11 extends vertically downward from the outer edge portion of the upper wall portion 10 with respect to the upper wall portion 10, and when the first member 8 is attached to the opening peripheral edge portion 5 as shown in FIG. 2. Is located on the radially outer side of the standing peripheral wall portion 6. The outer peripheral wall portion 11 has a different length in the circumferential direction of the upper wall portion 10. In the present embodiment, the hanging length from the upper wall portion 10 of the outer peripheral wall portion 11 is the longest in the region where the long hole 14 exists, and is shortened in other portions. The inner peripheral wall 12 extends vertically downward from the inner edge of the upper wall 10 with respect to the upper wall 10, and when the first member 8 is attached to the opening peripheral edge 5 as shown in FIG. 2. Is located on the radially inner side of the standing peripheral wall portion 6. In the present embodiment, the inner peripheral wall portion 12 has a constant length in the circumferential direction of the upper wall portion 10, and its inner surface constitutes a circumferential surface.

As shown in FIGS. 3 and 5, a plurality (four in this embodiment) of locking claws 15 are provided at the lower portion of the inner peripheral wall portion 12. More specifically, each locking claw 15 is provided in the vicinity of each long hole 14 provided in the upper wall portion 10 in the lower portion of the inner peripheral wall portion 12. Each locking claw 15 includes a leg portion 16 that extends downward from the inner peripheral wall portion 12, and a claw portion 17 that protrudes from the lower end portion of the leg portion 16 toward the outside of the first member 8. Yes. In addition, the leg part 16 and the nail | claw part 17 are provided over the whole circumferential direction of the 1st member 8 in the latching claw 15, as shown in FIG. Further, the inner surface of the leg portion 16 is flush with the inner surface of the inner peripheral wall portion 12, and the inner surface of the leg portion 16 and the inner surface of the inner peripheral wall portion 12 constitute the same circumferential surface. . The leg portion 16 of each locking claw 15 can be bent in the radial direction of the first member 8. And when the 1st member 8 is attached to the opening peripheral part 5, while the inner surface of the leg part 16 of each latching claw 15 contact | abuts to the internal peripheral surface of the standing peripheral wall part 6, the claw part 17 is the following. Locked to the inner peripheral edge 5 a of the opening peripheral edge 5. Therefore, when the first member 8 is attached to the opening peripheral portion 5, it is difficult to come out from the opening peripheral portion 5. Further, when the first member 8 is attached to the opening peripheral portion 5, the deformation of the first member 8 due to the bending of the leg portion 16 of each locking claw 15 is caused by each long hole 14 provided in the upper wall portion 10. Is absorbed by.

As shown in FIG. 3, the inner peripheral surface of the inner peripheral wall portion 12 includes a raised portion 18, a convex portion 19, and a vertical groove 20, and a plurality of sets (four sets) are arranged on the inner peripheral surface. It is provided corresponding to the position where the long hole 14 is formed. Each raised portion 18 extends in the width direction of the locking claw 15 (the circumferential direction of the inner peripheral wall portion 12) substantially in the center while maintaining a constant width in the vertical direction in the area where each locking claw 15 exists. Accordingly, the raised portion 18 gradually rises inward in the radial direction of the inner peripheral wall portion 12. Each convex portion 19 protrudes radially inward of the inner peripheral wall portion 12 at a position slightly away from the maximum raised portion of each raised portion 18 in the circumferential direction of the inner peripheral wall portion 12. Is projected more than the maximum swelled portion of the swelled portion 18. In this case, the convex portion 19 is also set to have a constant width similar to that of the raised portion 18 in the vertical direction. Each vertical groove 20 is formed by a gap between the maximum raised portion of each raised portion 18 and each convex portion 19, and each vertical groove 20 has a short length (substantially the length of the inner peripheral wall portion 12). It extends in a direction (direction in which the axis of the first member extends).

The second member 9 is formed of, for example, a resin (for example, polyacetal). As shown in FIGS. 1 and 6 to 8, the second member 9 is assembled with the first member 8, and the back surface of the lid portion 21. And an insertion portion 22 provided integrally therewith. The lid portion 21 is formed in a disk shape with a diameter corresponding to the outer diameter of the upper wall portion 10 in the first member 8, and the surface thereof has a radial direction in consideration of a manual rotation operation. A projecting portion 23 is provided at the center, and a plurality of upright plate portions 24 are provided radially outward from the projecting portion 23 in the radial direction. The surface shape of the lid 21 is basically not easy to grip and apply a force to the surface shape in an operation mode other than a manual rotation operation. The lid portion 21 is placed on the upper wall portion 10 of the first member 8, and the opening 25 (opening 4) of the first member 8 is closed by the lid portion 21.
As is apparent from FIG. 7 showing a bottom view, the insertion portion 22 is basically inserted in a cross shape by combining four bulging portions 26 bulging radially outward from the radial central portion. It is formed as a cylinder. Each bulging portion 26 has an arcuate bulging top surface 27 that is convex outward in the radial direction of the insertion portion 22, and the four bulging top surfaces 27 are extended lines of the respective bulging top surfaces 27. Are set so that a circle having a predetermined diameter is formed (see the dashed line in FIG. 7). As the predetermined diameter of the circle, the diameter of the inner surface of the inner peripheral wall portion 12 of the first member 8 is set, so that the engagement claw 15 is inserted into the opening 25 of the first member 8 at a location where the circle does not exist. If the insertion portion 22 is inserted while aligning the bulging portions 26 of the portion 22, the insertion portion 22 is smoothly inserted until the back surface of the lid portion 21 comes into contact with the upper wall portion 10 of the first member 8. Is done.

The bulging top surface 27 of each bulging portion 26 is substantially the same as the vertical width of the inner peripheral wall portion 12 of the first member 8 from the back surface of the lid portion 21 as shown in FIGS. Retracting inward in the radial direction of the insertion portion 22 with a width, an entrance groove (a step surface 29 and a lid portion 21 described later) 28A is formed. For this reason, step surfaces 29 are formed between the retraction top surface 28 and the normal bulging top surface 27 in the entry groove 28A, and each step surface 29 is in a substantially horizontal state. Yes. On each step surface 29, a rotation regulating wall 30 as a rotation regulating portion is formed so as to protrude from the retraction top surface 28 at approximately the center in the circumferential direction of the retraction top surface 28. Each rotation restricting wall 30 stands up and down with a certain thickness corresponding to the shape of the vertical groove 20, and the projecting end face (front end face) of each turn restricting wall 30 is formed on the bulging portion 26. It is formed so as to be flush with the normal bulging top surface 27 (arc shape).

Such a second member 9 is inserted into the opening 25 (opening 4) of the first member 8 as described above, and then guided to the vertical groove 20 via the raised portion 18 by a turning operation. Relative rotation of the second member 9 and removal of the second member 9 from the first member 8 are restricted (regulated state is established). Further, at that time, the bulging top surface 27 of each bulging portion 26 is locked to each other. Reaching the inner surface of the leg portion 16 of the claw 15 restricts each locking claw 15 from bending inward in the radial direction.

Specifically, the assembly of the first member 8 to the opening peripheral edge 5 of the suspension tower 1, the assembly of the second member 9 to the first member 8, and the operation thereof will also be described with reference to FIGS. 9 to 11. To do.

First, as shown in FIG. 9, the first member 8 is pushed into the annular groove 13 while the upright peripheral wall portion 6 of the suspension tower 1 enters. As a result, the first member 8 moves downward while the locking claws 15 bend inward in the radial direction of the upright peripheral wall portion 6, and reaches the inner peripheral edge 5 a of the opening peripheral edge 5. The bending of the pawls 15 returns to some extent, and the respective locking claws 15 are locked to the peripheral edge 5 of the opening (see FIG. 5). Thereby, the 1st member 8 is hold | maintained at the top surface 2 of the suspension tower 1, as shown in FIG.

Next, as shown in FIG. 9, the insertion portion 22 of the second member 9 is inserted into the opening 25 of the first member 8 held on the top surface of the suspension tower 1. At this time, the insertion portion 22 is inserted into the opening 25 of the first member 8 while aligning each bulging portion 26 of the insertion portion 22 at a location where the locking claw 15 does not exist. Thereby, the insertion part 22 is smoothly inserted until the cover part 21 contacts the upper wall part 10 of the first member 8. FIG. 10 shows a cross-sectional view of this state.

After that, the projecting portion 23 and the upright plate portion 24 of the lid portion 21 of the second member 9 are put on the hand and rotated in the direction indicated by the arrow in FIG. Thereby, the protruding end surface of each rotation regulating wall 30 on each step surface 29 is guided to the raised portion 18, and each rotation regulating wall 30 protrudes while deforming the raised portion 18 outward in the radial direction of the first member 8. It moves toward the part 19. As a result of this movement, when the projecting end surface of each rotation restricting wall 30 passes through the maximum raised portion of the raised portion 18, as shown in FIG. 11, each turn restricting wall 30 comes into contact with the convex portion 19, and its movement is restricted. At the same time, each raised portion 18 returns to the inside in the radial direction of the first member 8, and each rotation restriction wall 30 is fitted in each vertical groove 20.
As a result, relative rotation of the second member 9 with respect to the first member 8 is restricted (a restricted state is established with respect to relative rotation). At this time, the elongated holes 14 absorb the deformation of the raised portions 18.
Further, at this time, each step surface 29 has moved below each convex portion 19, and the second member 9 cannot move in the direction (upward direction) to be removed from the first member 8 (regulation state regarding separation movement is established). ). In this case, the locking relationship between each stepped surface 29 and each convex portion 19 exhibits a significantly large locking force as compared with the case of using the locking claw, and the first member 8 and the second The holding force with the member 9 is remarkably large.
Further, at this time, the normal bulging top surface 27 of each bulging portion 26 faces the inner surface of the leg portion 16 of each locking claw 15 (for each locking claw 15 in each long hole 14). Correspondingly provided (see FIGS. 3 and 11), the bulging top surface 27 of each bulging portion 26 suppresses the bending inward of each locking claw 15 in the radial direction, and The latching of the pawl 15 is restricted from coming off from the opening peripheral edge 5 of the suspension tower 1. In this case, as an aspect in which the bulging top surface 27 is disposed close to the inner surface of the leg portion 16 of each locking claw 15, an aspect in which the inner surface of the leg portion 16 and the bulging top surface 27 abut, 16 includes both the inner surface 16 and the bulging top surface 27 being slightly separated from each other.

Therefore, in the first embodiment, the first member 8 can be assembled to the opening peripheral edge 5 of the suspension tower 1 and the second member 9 can be assembled to the first member 8 with a normal assembling force. Thus, the top surface of each bulging portion 26 of the second member 9 is restricted from being bent in a direction in which the locking of the locking claw 15 of the first member 8 is released from the opening peripheral edge portion 5. As a result, the removal force of the cover 7 as a whole with respect to the opening peripheral edge 5 can be increased without deteriorating the mounting workability.
In this case, since the surface shape of the lid portion 21 of the second member 9 is a shape that is directly gripped and difficult to pull out from the first member 8, substantially the opening 4 is substantially related to the removal force of the cover 7 as a whole. Only the locking strength of each of the reinforced locking claws 15 with respect to the inner peripheral edge portion 5a is involved. In the first embodiment, the entire cover 7 is directly gripped and pulled out (specifically, (When the first member 8 is directly gripped and both the first and

second members

8 and 9 are lifted), the entire cover 7 is opened 4 by directly gripping the second member 9 and pulling it upward. Even if such a thing is performed, it is reliably prevented by the locking relationship between each stepped surface 29 and each convex portion 19, and the removal force of the cover 7 as a whole is In the locking relationship with the first and

second members

8 and 9 So as not to decrease in Zui.

12 to 23 show a second embodiment. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

In the second embodiment shown in FIGS. 12 to 23, a temporary holding set body 31 in which the second member 9 is temporarily held in the first member 8 is assembled in the first member 8 in order to improve handling (see FIG. 12). By moving the holding set body 31 from the temporary holding state to the main fastening state (see FIG. 13), the cover 7 is attached.

As shown in FIGS. 14 and 15, the first member 8 that is a component of the temporary holding set 31 has a reference wall portion 32 as a support portion formed in a ring shape with a horizontal constant width. Yes. A circumferential wall 33 extending upward is provided over the entire circumference of the reference wall 32 on the radially outer side of the reference wall 32. Further, on the radially inner side of the reference wall portion 32, a plurality (three in this embodiment) of locking claws 15 extending downward, and a plurality (three in this embodiment) of first temporary holding claws 34 are provided. Is provided. Further, a plurality (three in the present embodiment) of second temporary holding claws 35 extend upward from the radially inner upper surface of the reference wall portion 32.

As in the first embodiment, each of the locking claws 15 has a locking relationship (locking and unlocking) based on the bending motion of the leg portion 16. The leg portions 16 of the respective locking claws 15 are not only provided with outer claw portions 17 for locking with the opening peripheral edge portion 5 at the lower end portion on the outer surface side, but also with inner claw portions 36 on the inner surface side. The inner claw portion 36 is provided at a position slightly higher than the outer claw portion 17.
Each of the first temporary holding claws 34 is disposed between the adjacent locking claws 15. The hanging length of the leg portion 37 (the lower end portion) of each first temporary holding claw 34 is a length that cannot reach the height position of the inner claw portion 36 of the locking claw 15. A claw portion 38 is provided on the inner surface of the lower end portion of the first claw member 15 so as to protrude radially inward of the first member 8 at a position higher than the height position of the inner claw portion 36 of the locking claw 15. Each of the first temporary holding claws 34 is also configured to obtain a locking relationship based on the bending movement. The bending resistance of each of the first temporary holding claws 34 has a drooping length of the locking claw 15. Based on the fact that it is shorter than the hanging length, the material is different, etc., it is larger than the bending resistance of the locking claw 15 (being difficult to bend). Each of the first temporary holding claws 34 is formed with a vertical slit 39 substantially at the center in the width direction (around the reference wall portion 32). Each of the vertical slits 39 divides each first holding claw 34 into a pair of temporary holding claw portions 34a, and cuts out the reference wall portion 32 in accordance with the division, thereby providing a pair of temporary holding claw portions. 34a also functions as a guide wall.
The second temporary holding claws 35 are arranged so as to be displaced from the first temporary holding claws 34 in the circumferential direction of the reference wall portion 32, and the upper ends of the second temporary holding claws 35 are arranged. A claw portion 40 that protrudes inward in the radial direction of the first member 8 is provided on the inner surface of the portion.

As shown in FIGS. 16 and 17, the second member 9 includes a lid portion 21 and an insertion portion 22 provided integrally on the back surface of the lid portion 21.
The lid portion 21 is formed in a disc shape having a diameter corresponding to the outer diameter of the reference wall portion 32 (circumferential wall portion 33) in the first member 8, and the surface of the lid portion 21 projects in a conical shape upward. Yes.
For this reason, the surface shape of the lid portion 21 is difficult to grip directly, and it is not possible to apply a pulling force (pull-out force) to the second member 9 via the lid portion 21 or to apply rotational force. It is difficult.
The insertion portion 22 includes a columnar first base portion 41 provided on the back surface of the lid portion 21 and a second base portion having a three-pronged shape (substantially Y shape) as viewed from the bottom surface provided on the lower surface of the first base portion 41. 42 and a plurality of locking claws 43 that hang from a portion of the lower surface peripheral portion of the first base portion 41 where the second base portion 42 does not exist.
The outer diameter of the first base portion 41 is smaller than the inner diameter of the reference wall portion 32 in the first member 8, and the first base portion 41 has a shape and size that can be inserted into the reference inner wall portion 32. ing.
In the second base portion 42, each projecting top surface 44 based on the trifurcated shape is positioned below the outer peripheral surface with the same curvature as the outer peripheral surface of the first base portion 41, and the insertion length of the insertion portion 22 is The first and

second base portions

41 and 42 are substantially combined. Projections 45 are formed on the outer peripheral surface of the first base portion 41 and the protruding top surface 44 of the second base portion 42 so as to extend in the vertical direction. The protrusions 45 can be fitted into the vertical slits 39 from the upper side corresponding to the vertical slits 39 in the first member 8, whereby the first and

second base portions

41, 42. Can be inserted into the first member 8 while the relative rotation is restricted by the pair of temporary holding claws 34 a of the first member 8.
Each latching claw 43 has an inner surface side of each latching claw 15 (inward in the radial direction of the first member 8) when each projection 45 is fitted into each vertical slit 39 of the first member 8 from above. The width of each leg 46 of each locking claw 43 (the length in the circumferential direction of the first base portion 41) is also the leg of the locking claw 15. 16 is substantially the same as the length in the width direction. Each locking claw 43 has a claw portion 47 projecting radially outward at the lower end of the leg portion 46, and each claw portion 47 is in a temporary holding state (a state of the temporary holding set body 31). Is located above the inner claw portion 36 of each locking claw 15, and in the state where the back surface of the lid portion 21 is in contact with the upper end surface of the standing peripheral wall portion 6 (main fastening state), the inner side of the locking claw 15. It is set to be positioned below the claw portion 36.
In addition, the second member 9 is radially outward from the elements below the first base portion 41 (the projecting top surface 44 of the second base portion 42, the leg portion 46 of the locking claw 43, etc.). A slight level difference 48 is formed (see FIG. 16).

The temporary holding set 31 is assembled as follows using the first member 8 and the second member 9 as described above. The projections 45 of the second member 9 are inserted into the vertical slits 39 of the first member 8 from above, and the projections 45 are guided by the pair of engagement holding claws 34a, while the insertion portions 22 of the second member 9 are inserted. Move into the first member 8. The insertion (movement) of the insertion portion 22 of the second member 9 into the first member 8 is performed by the lower end of the second base portion 42 of the second member 9 being locked by the claw portions 38 of the first temporary holding claws 34. When the lower end of the second base portion 42 (insertion portion 22) of the second member 9 is locked by the claw portions 38 of the first temporary holding claws 34, the insertion operation is stopped. At this time, each second temporary holding claw 35 is also locked to the step 48 of the first member 8. As a result, the second member 9 is restricted from moving in the vertical direction relative to the first member 8 by the first and second temporary holding

claws

34 and 35, and each pair of temporary holding claw portions 34 a and protrusions 45. As a result, relative rotation with respect to the first member 8 is restricted (establishment of a restriction state with respect to relative rotation). This state is a state in which the temporary holding set body 31 is assembled, and the state at that time is shown in FIG. 12 described above and FIG. 18 showing the longitudinal section thereof.

The temporary holding set 31 assembled in this way is inserted into the opening 4 with the first member 8 facing downward, as shown in FIG. By this insertion, as shown in FIG. 19, the locking claws 15 of the first member 8 move downward along the upright peripheral wall portion 6 with almost no bending, and the claw portions of the respective locking claws 15. When 17 reaches the height position of the inner peripheral edge portion 5a of the opening peripheral edge portion 5, the reference wall portion 32 comes into contact with the upper end surface of the upright peripheral wall portion 6, and as shown in FIG. Movement to is regulated.

When the claw portions 17 of the respective locking claws 15 reach the height position of the inner peripheral edge portion 5a, the first temporary holding claws 34 are brought into FIG. 21 by pushing the second member 9 into the first member 8. As shown, the first member 8 is bent outward in the radial direction, and the locking of the first temporary holding claws 34 with respect to the second base portion 42 is released. When the second member 9 is pushed along with the release, each locking claw 43 of the second member 9 presses the inner claw portion 36 of each locking claw 15 in the first member 8 from above, In order to cancel the relationship between the claw 43 and each locking claw 15, the direction in which the

claw portions

47 and 36 are separated from each other, that is, for each locking claw 43, on the radially inner side of the first member 8, The locking claw 15 is bent outward in the radial direction of the first member 8 (see FIG. 21). After that, when the claw portions 47 of the respective locking claws 43 are finally locked to the inner claw portions 36 of the respective locking claws 15 through bending inward in the radial direction of the first member 8 ( In this state, the state in which each locking claw 15 is bent outward in the radial direction of the first member 8 is maintained, and the claw portion 17 is engaged with the inner peripheral edge portion 5a of the opening peripheral edge portion 5. Stopped. In this case, with respect to the elasticity (ease of bending) of the locking claw 43 and the elasticity (ease of bending) of the locking claw 15, the locking claw 15 is locked to the same degree or by adjusting the material, thickness, etc. It is set so as to bend more easily than the claw 43. In order to securely lock the locking claw 15 to the inner peripheral edge 5a of the opening peripheral edge 5 using the locking claw 43, the locking claw 15 is more easily elastically deformed than the locking claw 43 ( It is preferable that it bends easily.

Thereby, each latching claw 15 will control that the 1st member 8 moves to the removal direction (upward direction) from the opening peripheral part 5, and each latching claw 43 will each latching claw 15 ( Due to the locking relationship with the inner claw portion 36), the second member 9 is restricted from moving in the direction of pulling out (upward) from the first member 8 (establishment of a restricted state with respect to the separation movement) and each locking claw. By supporting 15 from the inside, each locking claw 15 (leg portion 16) of the first member 8 is radially inward of the first member 8 (direction in which the locking claw 15 is unlocked from the inner peripheral edge 5a). ). FIG. 23 shows a state in which the cover 7 according to the second embodiment is finally assembled to the opening peripheral edge 5 of the suspension tower top wall 2.

Therefore, in the second embodiment, in assembling the temporary holding set body 31 to the opening peripheral edge portion 5 of the suspension tower 1, the temporary holding set body 31 does not bend the locking claws 15 almost without bending. Set in the unit 5 (see FIGS. 19 and 20). Then, at the time of subsequent fastening (substantially, assembly of the first member 8 with respect to the opening peripheral edge portion 5 and assembly of the second member 9 with respect to the first member 8), the claw portions of the respective locking claws 43 When the 47 is locked to the claw portion 36 of each locking claw 15, a part of the normal bending force for locking each locking claw 43 is caused by bending deformation of each locking claw 15 (inside the opening 4. This is used for bending deformation to be engaged with the peripheral edge portion 5a. Also in this assembling, it is necessary to bend and assemble the normal assembling force (each locking claw 15 and each locking claw 43 individually). Power).

On the other hand, after assembling, the locking claws 15 of the first member 8 are restrained from bending inward in the radial direction of the first member 8, and the locking claws 15 with respect to the inner peripheral edge portion 5a are regulated. It is possible to reinforce the locking. Moreover, after the assembly, the second member 9 is pulled out from the first member 8 by applying a force to the lid portion 21 of the second member 9 based on the surface shape of the lid portion 21 of the second member 9. However, it is basically difficult, and only the locking strength of each of the reinforced locking claws 15 with respect to the inner peripheral edge portion 5a of the opening 4 can be involved in the removal force of the cover 7 as a whole. it can. From this, also in this 2nd Embodiment, the removal force as the cover 7 whole with respect to the opening peripheral part 5 can be heightened, without reducing attachment workability | operativity.

In this case, as described above, it is difficult to directly grip the second member 9 (lid 21) and pull it out from the first member 8, but even if such a case is performed, When the second member 9 is pulled up, the engagement relationship between the engagement claw 43 of the second member 9 and the engagement claw 15 (inner claw portion 36) of the first member 8 is released. After the locking claw 15 of the first member 8 locked to the inner peripheral edge portion 5a of the opening 4 is forcibly removed from the inner peripheral edge portion 5a of the opening 4, the locking claw 15 of the first member 8 The locking relationship between the second member 9 and the locking claw 43 needs to be released. At this time, the locking claw 15 of the first member 8 and the locking claw 43 of the second member 9 are released. In addition to the force to do this, a force to release the locking claw 15 of the first member 8 from the inner peripheral edge 5a of the opening 4 is also required. For this reason, the locking strength of the locking claw 15 (inner claw portion 47), the second member 9, and the locking claw 43 of the first member 8 is increased. Is not reduced based on the locking relationship with the first and

second members

8 and 9.

In the second embodiment, when the cover 7 is held in the opening 4, the locking claw 15 of the first member 8 is locked to the inner peripheral edge 5 a of the opening 4 and the locking of the first member 8 is performed. Since the claw 15 is configured to lock the locking claw 43 of the second member 9, the locking claw 15 of the first member 8 and the locking claw 43 of the second member 9 may be bent as necessary. This increases the allowable range of the diameter of the opening 4 to which the cover 7 can be attached.

In the second embodiment, when the temporary holding set body 31 is inserted into the opening 4, the claw portions 17 of the first member 8 are not bent in the opening peripheral portion 5 without almost bending each locking claw 15 of the first member 8. Although it moved to the peripheral part 5a at this time, as a deformation | transformation aspect, each latching nail | claw 15 of the 1st member 8 is moved to a downward | lower direction, deflecting radially inner side by the standing surrounding wall part 6, and each latching claw When the 15 claw portions 17 reach the inner peripheral edge portion 5a of the opening 4, a part of the bending force of each locking claw 15 is restored, so that each locking claw 15 is locked to the inner peripheral edge portion 5a. You may let them. The latching claws 15 of the first member 8 are locked (assembled) to the peripheral edge 5 of the opening, and the latching claws 43 of the second member 9 are then locked to the first member 8 (inner claw portion 36). Stop (assembly) does not require a large force (assembly force). Further, the first member 8 assembled to the opening 4 and the second member 9 assembled to the first member 8 are locked by the locking claws 43 of the second member 9. By supporting the claw 15 from the inner surface side, each locking claw 15 is prevented from coming off from the inner peripheral edge portion 5a of the opening 4.

In the above case, when the locking claws 15 of the first member 8 are locked to the opening peripheral edge portion 5, the first temporary holding claws 34 that lock (hold) the second base portion 42 are also locked. Although the relationship is to be canceled, the hanging length of the leg portion 37 of the first temporary holding claw 34 is set to the locking claw 15 so as to ensure that each locking claw 15 is first and securely locked to the inner peripheral edge portion 5a. Since the length of the legs 16 is shorter than that of the legs 16 and the material is different, the bending resistance of the first temporary holding claws 34 is larger than the bending resistance of the locking claws 15. Until each locking claw 15 is locked to the inner peripheral edge 5a, the locking relationship of the first temporary holding claw 34 with respect to the second base portion 42 is not released (maintaining the state of the temporary holding set 31). Other operations are basically the same as those of the second embodiment.

This application is based on a Japanese patent application (Japanese Patent Application No. 2009-135906) filed on June 5, 2009, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 ... Suspension tower 2 ... Top wall of suspension tower 4 ... Opening of suspension tower top wall 5 ... Opening peripheral part 5a ... Inner peripheral part 6 ... Standing peripheral wall part (support part)
7 ... Cover 8 ... 1st member 9 ... 2nd member 10 ... Upper wall part (support part)
12 ... Inner wall (inner wall)
DESCRIPTION OF SYMBOLS 15 ... Locking claw of 1st member 16 ... Leg part 19 ... Convex part 20 ... Longitudinal groove 21 ... Cover part 22 ... Insertion part 25 ... Opening of 1st member 26 ... Swelling part 27 ... Swelling top surface 28A ... Entry Groove 29 ... Step surface 30 ... Rotation restricting wall (rotation restricting portion)
31 ... Temporary holding set body 32 ... Reference wall part (support part)
43 ... Second member locking claw 46 ... Leg part

Claims

An opening closing cover for closing the opening,
The opening is formed in an annular shape corresponding to the opening, and a support portion is provided on one side of the axial center extending direction to be supported by the outer peripheral edge of the opening, and the opening is formed on the other side of the axial center extending direction. A first member provided with a locking claw for locking to the inner peripheral edge of the first member;
An insertion portion that establishes a restricted state with respect to relative rotation and separation relative to the first member by a locking relationship with the first member in a state of being inserted into the first member; and a proximal end side of the insertion portion A second member having a lid portion that is provided integrally and covers the opening of the first member when the insertion portion is inserted into the first member;
The opening closing cover, wherein the insertion portion of the second member is set so as to be disposed close to the inner surface of the locking claw when the insertion portion establishes the restriction state.
After the insertion portion of the second member is inserted into the first member, the insertion portion reaches the position where the restriction state is established by rotating the insertion portion relative to the first member. The opening closing cover according to claim 1, which is set.
A convex portion is provided on one of the inner peripheral surface of the first member and the outer peripheral surface of the insertion portion,
An entry groove is formed on the inner peripheral surface of the first member or the outer peripheral surface of the insertion portion to allow the protrusion to enter as the second member rotates relative to the first member. ,
When the insertion portion reaches the establishment position of the restricted state, the first member and the second member extend from each other along the axis of the first member by the convex portion entering the entry groove. The cover for closing an opening according to claim 2 which regulates separation in the direction.
In the entry groove, a rotation restricting portion that comes into contact with the convex portion with the relative rotation of the second member with respect to the first member is provided,
Of the one surface, a raised portion that gradually rises toward the convex portion is formed on the opposite area surface of the distal end surface of the rotation restricting portion that moves with relative rotation of the second member with respect to the first member. Formed,
A vertical groove is formed between the raised portion and the convex portion,
At least one of the raised portion or the rotation restricting portion is deformable, and when the insertion portion reaches the established position of the restricted state, the turn restricting portion gets over the raised portion and enters the vertical groove. The cover for closing an opening according to claim 3.
The first member is provided with two or more locking claws at an interval,
The insertion portion corresponds to the plurality of locking claws, and has a shape bulging with a plurality of bulging portions from the radially inner side to the radially outer side,
The bulging top surface of each bulging portion is disposed close to the inner surface of each of the locking claws when the insertion portion reaches a position where the restriction state is established. A cover for closing the opening.
Of the first member, the portion on the other side in the axial center extending direction of the first member can be inserted into the opening from the support portion of the first member,
By inserting the insertion portion of the second member into the first member, the insertion portion reaches the establishment position of the restricted state, and the locking claw of the first member is in the radial direction of the first member. The cover for closing an opening according to claim 1 which bends outward.
The insertion portion of the second member includes a locking claw with a claw portion facing outward,
In addition to the outer claw on the outer surface of the locking claw, the locking claw in the first member is provided with an inner claw on the inner surface of the locking claw in the first member,
When the insertion portion of the second member reaches a position where the restriction state is established, the claw portion of the locking claw in the second member is locked to the inner claw portion of the locking claw in the first member. The opening closing cover according to claim 6, wherein, with the locking, the locking claw in the first member is bent outward in a radial direction of the first member.
The locking claw of the first member is inserted while being bent with respect to the opening,
The insertion portion of the second member includes a locking claw with a claw portion facing outward,
The locking claw in the first member is provided with an inner claw portion on the inner surface of the locking claw in addition to the outer claw portion of the outer surface of the locking claw,
The second member is formed with a claw portion that is locked to an inner claw portion of the locking claw in the first member when the insertion portion of the second member reaches a position where the restriction state is established. The opening closing cover according to claim 1, wherein a locking claw is provided.
The first member includes a plurality of temporary members provided with claw portions facing inward and higher than the inner claw portions of the locking claws of the first member. With holding claws,
9. The opening according to claim 7, wherein the second member is temporarily held in the first member by the claw portions of the plurality of temporary holding claws to form a temporary holding set body. Cover for closure.
The cover for closing an opening according to any one of claims 6 to 9, wherein two or more of the locking claws of the first member and the locking claws of the second member are provided at intervals.
The opening closing cover according to any one of claims 1 to 10, wherein the opening closing cover is attachable to an opening of a suspension tower top wall.