JP5235145B2 - Cover member mounting structure - Google Patents

Description

  The present invention relates to a cover member mounting structure, and more specifically, to a cover member mounting structure in which a cover member that covers an opening in an openable / closable manner is engaged with the periphery of the opening.

  For example, a lower part of the front end of a vehicle such as an automobile is provided with a tow hook used for towing the vehicle, or a hook attaching part for attaching the tow hook when necessary, and covers the front of the lower front end of the car body. The bumper face is formed with an opening for accessing such a pulling hook or hook mounting portion. This opening is normally covered and closed by a cover member. When necessary, the cover member is opened to allow access to the tow hook or the hook mounting portion.

  As described above, for example, as disclosed in Patent Document 1, a part of the periphery of the cover member is a cover member mounting structure in which the cover member that covers the opening to be opened and closed is locked to the periphery of the opening. In addition to providing a locking claw part, a groove to be locked is formed in a part of the periphery of the opening, and the locking claw part is elastically bent by pressing the cover member from the front side to the back side, A structure is known in which the cover member is fixed to the periphery of the opening by fitting the locking claw into a locked groove.

Japanese Patent No. 3966013

  In the conventional structure using the locking claw part, in order to improve the workability of the cover member assembly, the claw height of the locking claw part is lowered to reduce the cover member pressing force during assembly. Accordingly, the holding force at the periphery of the opening with respect to the cover member is reduced, and the cover member is easily detached from the opening. Conversely, if the claw height is increased in order to increase the holding force of the peripheral edge of the opening with respect to the cover member, the cover member pressing force at the time of assembly becomes too high, and the assembly workability is impaired. .

  Therefore, the present invention provides a cover member mounting structure that can achieve both the improvement of the assembly workability of the cover member and the securing of the holding force of the periphery of the opening with respect to the cover member. It was made as a basic purpose.

For this reason, the first invention of the present application is a cover member mounting structure in which a cover member that covers the opening so as to be openable and closable is attached to the periphery of the opening, and the cover member is attached from the back side in the cover member mounting state. An urging mechanism for urging toward the front side is provided between the cover member and the periphery of the opening, and the cover member in the attached state is dropped from the opening to the front side at one side edge of the cover member. while retaining projection portions are provided for preventing, in the other side edge facing the one side edge of the cover member is fitted from the rear side to the locking portion of the opening portion toward the front side engaged A concave locked portion having an opening on the front side is provided, and the cover member is locked with the retaining protrusion projecting against the back side of the peripheral wall of the opening, and The concave locked portion is a locking portion at the periphery of the opening. In locked mounting state fitted from the rear side toward the front side, in the vicinity of and near the concave engaged portion of the retaining projection portion is urged toward the front side from the rear side by the biasing mechanism It is characterized by that.

  Further, according to a second invention of the present application, in the first invention, a flange portion is formed on the periphery of the opening portion so as to project into the opening portion by a predetermined width and receive the back side of the cover member. An urging mechanism is provided.

  Further, according to a third aspect of the present invention, in the first or second aspect of the present invention, the engagement portion of the concave engagement portion with the engagement portion is released from the engagement portion on the periphery of the opening. A notch for inserting a tool for the purpose is formed.

According to the first invention of the present application, the cover member has the retaining projection provided on one side edge of the cover member in contact with the back surface side of the peripheral wall of the opening and is locked, and the one side The recessed locked portion provided on the other side edge facing the edge is fitted and locked to the locking portion on the peripheral edge of the opening from the back side to the front side, and is attached to the peripheral edge of the opening. Thus, the vicinity of the retaining protrusion and the vicinity of the recessed locked portion are urged from the back side to the front side by the urging mechanism, so that the cover member is securely and stably held on the periphery of the opening. Can be made. Further, when the concave locked portion of the cover member is locked to the locking portion on the periphery of the opening, the cover member is moved from the front side to the back side in the opening against the biasing force of the biasing mechanism. Since it only has to be pushed in, the cover member can be assembled to the opening with a smaller force than when a conventional locking claw structure is used, and the assembling workability is also improved. That is, it is possible to achieve both the improvement of the assembling workability of the cover member and the securing of the holding force of the peripheral edge of the opening with respect to the cover member.

  In addition, according to the second invention of the present application, basically, the same effect as the first invention can be obtained. In particular, a flange portion is formed on the periphery of the opening portion so as to protrude into the opening portion by a predetermined width and accepts the back side of the cover member, and the biasing mechanism is specifically provided on the flange portion, so that the cover member is attached. Thus, the biasing mechanism can be provided using a member that receives the back side of the cover member, and the structure can be simplified as compared with the case where such a biasing mechanism is provided separately. Moreover, since the urging mechanism for urging the cover member from the back side to the front side in the attached state is provided in the flange portion that receives the back side of the cover member in the attached state of the cover member, the urging force of the urging mechanism is provided. By appropriately setting the characteristics and dimensional relationship, etc., it is possible to eliminate the need for a step adjustment that suppresses the generation of a step between the cover member surface and the surface around the opening when the cover member is attached. Can do.

  Furthermore, according to the third invention of the present application, basically, the same effects as those of the first or second invention can be obtained. In particular, a notch for inserting a tool for releasing the fitting state of the recessed locked portion into the locking portion is formed in the locking portion at the peripheral edge of the opening. When the fitting state of the recessed locked portion with respect to the locking portion is released, the release tool can be smoothly inserted, and by inserting such a tool, the locking portion of the periphery of the opening and the cover member It can suppress that a side edge is damaged.

It is a perspective view which shows the front part of the motor vehicle with which the cover member which concerns on embodiment of this invention was attached. It is an enlarged front view which shows the opening part for traction hooks of the bumper face of the said vehicle in the state from which the said cover member was removed. It is a perspective view which expands and shows the said opening part for tow hooks. It is a figure for demonstrating the structure of the peripheral flange part of the said opening part for tow hooks, and is sectional drawing along the Y4-Y4 line | wire of FIG. It is the perspective view which showed the said cover member seeing from the diagonally downward front. It is the perspective view which showed the said cover member seeing from front diagonally upward. It is a perspective view which expands and shows the principal part of the attachment structure to the opening part for traction hooks of the said cover member. It is a figure for demonstrating the attachment structure to the opening part for pulling hooks of the said cover member, and is sectional drawing along the Y8-Y8 line | wire of FIG. It is sectional drawing which shows the removal operation | work from the opening part for pulling hooks of the said cover member. It is a perspective view which expands and shows the principal part of the attachment structure to the opening part for traction hooks of the cover member which concerns on the modification of the said embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, taking as an example a case where the present invention is applied to a cover member mounting structure that covers a tow hook opening provided on a bumper face of an automobile so as to be opened and closed.
FIG. 1 is a perspective view showing a front portion of an automobile to which a cover member according to this embodiment is attached. FIG. 2 is an enlarged front view showing an opening for a tow hook of a bumper face of the automobile with the cover member removed. 3 is an enlarged perspective view showing the tow hook opening, and FIG. 4 is a view for explaining the structure of the peripheral flange portion of the tow hook opening, taken along line Y4-Y4 in FIG. FIG.

  As shown in FIGS. 1 and 2, the automobile 1 according to the present embodiment has a tow hook opening 10 formed in a bumper face 3 covering the front of the lower front end of the vehicle body. Is covered with a cover member 30 and closed. The tow hook opening 10 is an opening for accessing a tow hook (not shown) used when towing the vehicle or a hook attaching portion (not shown) for attaching the tow hook when necessary. The cover member 30 is opened when necessary, and the traction hook or the hook mounting portion can be accessed. The tow hook opening 10 is formed, for example, in a circular shape when viewed from the front.

  As shown in FIGS. 3 and 4, a flange portion 12 is formed on the periphery of the opening portion of the tow hook opening portion 10 so as to project into the opening portion 10 by a predetermined width. The flange portion 12 receives the back surface 30r side of the cover member 30 in the attached state of the cover member 30, and is formed integrally with the bumper face 3 by being lowered by a predetermined amount from the surface of the bumper face 3. Yes. The bumper face 3 is more preferably made of a synthetic resin.

  The flange portion 12 is cut out over a predetermined length at the upper and lower portions of the periphery of the opening, and a pair of cut-and-raised portions 14 are formed in the flange portion 12 with the upper cut-out portion 13 interposed therebetween. . A pair of cut-and-raised portions 16 are formed with the lower notch 15 interposed therebetween. In each of these cut-and-raised portions 14 and 16, the cut-and-raised tip side is raised by a predetermined height on the front side (the vehicle front side) of the flange portion 12. Therefore, it can be elastically displaced with respect to the load in the front and back direction (vehicle longitudinal direction) of the flange portion 12 and can generate a biasing force.

The upper cut-and-raised portion 14 will be described as an example. As shown in FIG. 4, the tip portion of the cut-and-raised portion 14 when the cover member 30 (see the alternate long and short dash line) is attached to the tow hook opening 10. Comes into contact with the back surface 30r of the cover member 30 and elastically deforms to the back surface side. In other words, the cover member 30 receives a biasing force that biases the cover member from the back surface side to the front surface side according to the elastic characteristics of the elastically deformed cut and raised portion 14.
That is, the cut-and-raised portions 14 and 16 are provided between the cover member 30 and the peripheral edge of the opening 10, and bias the cover member 30 from the back surface side to the front surface side in the cover member attached state. The mechanism is configured.

  In the present embodiment, as described above, when the biasing mechanism is provided by using the flange portion 12 that receives the back side of the cover member 30 in the cover member attached state, the biasing mechanism is provided separately. The structure can be simplified as compared with the above. In addition, since the urging mechanisms 14 and 16 for urging the cover member 30 from the back side to the front side in the attached state are provided on the flange portion 12 that receives the back side of the cover member in the attached state. By appropriately setting the urging characteristics and the dimensional relationship of the urging mechanisms 14 and 16, between the surface 30f of the cover member 30 and the surface of the periphery of the opening 10 (bumper face 3) when the cover member is attached. It is possible to eliminate the necessity of performing the step adjustment that suppresses the generation of the step.

  FIG. 5 is a perspective view of the cover member 30 as viewed from the front obliquely lower side, FIG. 6 is a perspective view of the cover member 30 as viewed from the upper front oblique direction, and FIG. 7 is a pulling hook opening 10 of the cover member 30. FIG. 8 is an enlarged perspective view showing a main part of the attachment structure to the traction hook, and FIG. 8 is a view for explaining the attachment structure of the cover member 30 to the opening 10 for the traction hook, taken along line Y8-Y8 in FIG. FIG. 9 is a cross-sectional view showing the operation of removing the cover member 30 from the tow hook opening 10.

  As shown in FIGS. 5 and 6, the cover member 30 that covers the tow hook opening 10 so as to be openable and closable is attached to the one side edge (upper edge) of the cover member 30 in the attached state. It is provided with a retaining projection 32 for preventing it from falling off. As can be clearly understood from FIGS. 8 and 9, the retaining protrusion 32 extends to the back surface (30r) side of the cover member 30 by a predetermined amount and is guided by the peripheral wall 10w of the tow hook opening 10 during assembly. It has a guide part 32g and a protruding piece part 32k protruding upward from the terminal part of the guide part 32g, and has an inverted L-shaped cross-sectional shape as a whole.

  On the other hand, on the other side edge (lower edge) facing the one side edge (upper edge) of the cover member 30, a concave fitting portion 34 having an opening on the surface (30 f) side of the cover member 30 is provided. As can be seen from FIGS. 7, 8 and 9, the concave fitting portion 34 extends by a predetermined amount toward the back surface (30r) side of the cover member 30 and is attached to the peripheral wall 10w of the tow hook opening 10 when assembled. A guide portion 34g to be guided, a back wall portion 34b extending downward from a terminal portion of the guide portion 34g, and a folded portion 34c folded from the lower end of the back wall portion 34b to the surface side. The cover member 30 is also preferably made of a synthetic resin.

  At the lower end portion of the peripheral wall 10w of the tow hook opening 10, a projecting locking portion 18 protruding to the back surface side is formed, and the concave fitting portion 34 is connected to the projecting locking portion 18 from the back surface side. By fitting toward the front surface side, the lower end side of the cover member 30 is locked to the lower end portion of the peripheral edge of the tow hook opening 10. The front end surface of the protruding locking portion 18 is set to have a smaller area than the back wall portion 34b of the concave fitting portion 34, and the concave fitting portion 34 is formed on the protruding locking portion 18 from the back side to the front surface side. When the projection is engaged, the tip end surface of the projecting locking portion 18 comes into contact with the rear wall portion 34b of the concave fitting portion 34, so that a stable fitting state can be obtained.

  Further, for example, one end portion (base end portion) of a locking string 36 made of synthetic resin is coupled to an appropriate position on the back surface of the cover member 30. A locking hook 37 that is elastically bent and opens and closes is integrally formed at the other end of the locking string 36. The locking string 36 and the locking hook 37 are also made of synthetic resin, and more preferably integrally formed with the cover member 30.

  A locking hole 17 for locking the locking hook 37 is formed in the flange portion 12 of the tow hook opening 10, and the locking hook 37 is elastically bent to close the hook 37. In this state, the locking hook 37 cannot be removed from the locking hole 17 by inserting the locking hole 17 of the flange portion 12 from the front side and opening the hook 37 after the insertion (releasing the bending).

  Thus, by attaching the locking hook 37 of the locking string 36 to the locking hole 17 of the flange portion 12, when the cover member 30 is removed from the opening 10 for the traction hook, the locking string 36 is interposed. Thus, the cover member 30 can be connected to the flange portion 12 of the opening portion 10 for the tow hook, and convenience when using the tow hook can be enhanced.

  In the above configuration, when the cover member 30 is attached to and covered with the tow hook opening 10, first, the protrusion piece 32 k of the retaining protrusion 32 provided on the back surface of the upper edge of the cover member 30 is used for the tow hook. It inserts into the back surface side of the surrounding wall 10w from the upper notch part 13 provided in the flange part 12 of the opening part 10. FIG. Thereafter, the lower part of the cover member 30 is mainly pressed from the front side to the back side against the urging force of the urging mechanism (the cut-and-raised portions 14 and 16). Thereby, the concave fitting portion 34 provided on the lower surface of the lower edge of the cover member 30 is elastically bent slightly upward, and the protrusion of the peripheral wall 10w from the lower notch portion 15 provided in the flange portion 12. It is pushed from the front side to the back side along the upper surface of the shaped locking portion 18.

When the folded portion 34c of the concave fitting portion 34 climbs over the upper surface of the protruding locking portion 18 from the front side to the back side, the concave fitting portion 34 is fitted to the protruding locking portion 18 from the back side to the front side. . As a result, the lower edge of the cover member 30 is locked to the lower edge side of the tow hook opening 10.
At this time, the cover member 30 is urged from the back side to the front side by the urging mechanism (cut-and-raised portions 14 and 16), and the cover member 30 has a concave fitting portion 34 on the lower edge side. The protrusions 32 k of the retaining protrusions 32 k are fitted and locked to the protruding locking parts 18 on the periphery of the opening 10 from the back side to the front side, and on the upper edge side, the protruding piece 32 k of the retaining protrusion 32 is provided. It is attached to the opening part 10 for tow hooks in the state inserted and contacted to the back side of the peripheral wall 10w.

  Note that when the lower part of the cover member 30 is pressed mainly from the front side to the back side, the concave fitting part 34 of the cover member 30 is not elastically bent upward, and the protruding locking part of the peripheral wall 10w. It is also possible to set the shapes and dimensions of the retaining projection 32, the concave fitting portion 34, and the like so as to pass from the front side to the back side along the top surface of the 18. In this case, the holding force due to the elastic bending of the concave fitting portion 34 itself does not act, but even in this case, the cover member 30 is directed from the back side to the front side by the urging mechanism (cut-and-raised portions 14 and 16). Therefore, the traction hook opening 10 is securely and stably held on the peripheral edge.

Further, when removing the cover member 30 in the state of being attached to the tow hook opening 10, as shown in FIG. 9, a removal tool T having a tip Ts formed in a thin plate shape is used.
While pressing the cover member 30 from the front side to the back side (see arrow A in FIG. 9), the tip Ts of the removal tool T is placed between the guide part 34g of the concave fitting part 34 and the peripheral wall 10w (specifically, (Between the upper surfaces of the projecting locking portions 18) (see the arrow B), and preferably projecting the rear wall portion 34b of the concave fitting portion 34 toward the back side, thereby projecting the projecting locking portions 18. The fitting state of the concave fitting portion 34 with respect to is released.

  Then, the upper edge side of the cover member 30 is lifted slightly with the upper edge side of the cover member 30 as a fulcrum (see the arrow C) to release the locked state of the lower edge side of the cover member 30, and then the upper edge side The cover member 30 can be easily removed from the tow hook opening 10 by releasing the locked state.

  As described above, according to the present embodiment, the cover member 30 has the concave fitting portion 34 fitted to the protruding locking portion 18 at the periphery of the tow hook opening 10 from the back side to the front side. Since it is attached to the peripheral edge of the opening 10 by being stopped and is urged from the back side to the front side by the urging mechanism (cut-and-raised portions 14 and 16) in the attached state, the cover member is surely and stably provided. 30 can be held at the periphery of the tow hook opening 10.

  Further, when the concave fitting portion 34 of the cover member 30 is fitted and locked to the protruding locking portion 18, the biasing force of the biasing mechanism (cut-and-raised portions 14 and 16) is applied to the cover member 30. Therefore, the cover member 30 can be assembled to the opening 10 with a smaller force than when a conventional locking claw structure is used. Also, assembly workability is improved. That is, it is possible to achieve both the improvement of the assembling workability of the cover member 30 and the securing of the holding force of the peripheral edge of the opening with respect to the cover member 30.

FIG. 10 shows a modification of the above-described embodiment. In this modified example, when the removal tool T is used, the protruding locking portion on the lower edge side of the pulling hook opening 10 and the lower edge side of the cover member 30 are prevented from being damaged.
In the description of this modification, the same components as those in the embodiment shown in FIGS. 1 to 9 having the same functions as those in the embodiment shown in FIG. Omitted.

  In this modified example, a notch 41 having a predetermined width is formed at the approximate center in the left-right direction in a front view of the protruding locking part 40 provided on the lower edge side of the tow hook opening 10. A pair of locking piece portions 42 are provided on both the left and right sides of the frame. A pedestal 45 having an inclined guide surface 45g having a predetermined angle is integrally formed on the peripheral wall 10w corresponding to the front side (front side) of the notch 41.

  The width of the notch 41 is set to be larger than the width of the removal tool T, and the tip Ts of the removal tool T can be smoothly inserted through the notch 41 from the front side to the back side of the cover member 30. In addition, the inclination angle of the inclined guide surface 45g is such that the tool T is smoothly inserted into the lower surface of the guide portion 34g of the concave fitting portion 34 by inserting the removal tool T along the inclined guide surface 45g. The inner wall 34b of the concave fitting portion 34 is set so as to protrude toward the back side.

  That is, when the cover member 30 is removed, after the tip Ts of the removal tool T pushes the back wall portion 34b of the concave fitting portion 34 toward the back side, the highest position of the inclined guide surface 45g of the base 45 is used as a fulcrum. Thus, by rotating the removal tool T so that the tool tip Ts is lifted upward, the fitting state of the concave fitting portion 34 with respect to the locking piece portion 42 can be smoothly released. At this time, since the removal tool T is operated only on the pedestal 45 and does not come into contact with the peripheral wall portion 10w, the entrance side portion of the peripheral wall portion 10w that is easily visible from the outside is not damaged, and the appearance is adversely affected. It is prevented from exerting.

  Thus, according to this modification, the notch part for inserting the removal tool T at the approximate center in the left-right direction in the front view of the protruding locking part 40 provided on the lower edge side of the tow hook opening 10. 41 is formed, when using the removal tool T, the tool T can be smoothly inserted from the front side to the back side of the cover member 30. By inserting the tool T, the opening 10 for the traction hook is provided. It is possible to effectively prevent the lower edge side of the protruding locking portion 40 and the lower edge side of the cover member 30 from being damaged.

  Although the above embodiments and modifications are all applied to a cover member mounting structure that covers a tow hook opening provided on a bumper face of an automobile so as to be openable and closable, the present invention is not limited thereto. The present invention is not limited to such a case, and can be effectively applied as an attachment structure for various other cover members in which a cover member that covers the opening so as to be opened and closed is engaged with the periphery of the opening.

  Thus, it goes without saying that the present invention is not limited to the above-described embodiments and modifications, and various changes and design improvements can be made without departing from the scope of the invention. Yes.

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover member mounting structure in which a cover member that covers an opening so as to be opened and closed is attached to the periphery of the opening, for example, a cover that covers an opening for a tow hook provided on a bumper face of an automobile It can be effectively used as a member mounting structure.

DESCRIPTION OF SYMBOLS 3 Bumper face 10 Opening part for tow hooks 12 Flange part 14 Upper cut-and-raised part 16 Lower cut-and-raised part 18, 40 Projection locking part 30 Cover member 30f Cover member surface 30r Cover member back surface 34 Concave fitting part 41 Notch part 42 Locking piece

Claims (3)

A cover member mounting structure that locks and attaches a cover member that covers the opening in an openable and closable manner to the periphery of the opening,
A biasing mechanism for biasing the cover member from the back side to the front side in the cover member mounting state is provided between the cover member and the periphery of the opening,
While one side edge of the cover member is provided with a retaining protrusion for preventing the cover member in the attached state from falling off from the opening to the front side,
Wherein the other side edge facing the one side edge of the cover member, from said rear side to the engaging portion of the opening portion is fitted toward the front side is locked, the concave engaged section front is opened Is provided,
In the cover member, the retaining protrusion is brought into contact with and locked on the back side of the peripheral wall of the opening, and the concave locked portion is engaged with the locking portion on the periphery of the opening from the back side to the front side. In the attached state that is fitted and locked, the vicinity of the retaining protrusion and the vicinity of the recessed locked portion are urged from the back side to the front side by the urging mechanism.
A cover member mounting structure characterized by that.   2. A flange portion is formed on the periphery of the opening portion so as to protrude into the opening portion by a predetermined width and receives the back side of the cover member, and the biasing mechanism is provided on the flange portion. The cover member mounting structure described in 1.   The notch part which inserts the tool for canceling | releasing the fitting state of the said recessed to-be-latched part to the said latching | locking part is formed in the latching | locking part of the said opening part periphery, The characterized by the above-mentioned. Item 3. The cover member mounting structure according to Item 1 or 2.

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