JPH0571014U - Fitting structure between decorative frame and case body - Google Patents

Abstract

(57) [Summary] [Purpose] A simple structure can be attached to the decorative frame and the case body without secondary processing, and there are few dimensional control parts, and it can be assembled in the normal assembly process. Friction noise can be prevented. [Structure] At a plurality of step edges where the decorative frame and the case body are fitted to each other in a cage shape, insertion openings that open to the step edges are formed on the case body side. The locking wall is formed in an expanded shape, and the guide projection is formed at a predetermined interval with the locking wall on the inner side of the insertion opening to provide a fitting receiving portion, and the fitting receiving portion is provided on the decorative frame side. At least one locking arm that can be inserted into the insertion port is extended corresponding to the locking portion, the locking arm is provided so as to be elastically displaceable around its base, and the locking wall of the fitting receiving portion and the guide protrusion are provided. It is formed to have almost the same width as the space between the engaging portion and the portion, and by inserting the engaging arm into the fitting receiving portion, the engaging wall can be fixed in a bent shape between the engaging wall and the guide convex portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fitting structure of a decorative frame and a case body, for example, a retainer of an air-conditioning register of an automobile and a bezel.

[0002]

[Prior Art]

 Conventionally, as a fitting structure between a decorative frame of this type and a case body, for example, a retainer 2 of an automobile air-conditioning register 1 and a bezel 7, there is a structure shown in FIG. 12 to FIG. The retainer 2 and the bezel 7 are formed into a hollow cylindrical body having a substantially rectangular cross section, and are fitted and connected in a cage-like manner. A step edge 3 is formed on the four sides of the retainer 2 on the connection side. Fitting recesses 5 are formed on the upper and lower step edges 3 at the same intervals as the step surface 4, and locking projections 6 are provided at substantially the center of the fitting recesses 5, respectively. ing.

Further, the bezel 7 is formed in a substantially rectangular frame body, and the stepped edge 3 is externally fitted to the four sides of the connecting side of the substantially rectangular tubular portion 8 that fits with the retainer 2 of the bezel 7. The step edge 9 is formed, and the upper and lower step edges 9 each have a predetermined engaging piece 10 having an engaging hole 11 that can be fitted into the fitting concave section 5 of the retainer 2 and can be engaged with the locking convex section 6. Projections are formed at intervals. The retainer 2 and the bezel 7 formed as described above are fitted with the step edges 3 and 9 in a cage shape, and the engaging piece 10 is fitted into the fitting recess 5 to engage with the locking projection 6. The fitting holes 11 are engaged with each other and are fitted and connected to each other. A barrel 12 for adjusting the wind direction is attached to the bezel 7.

[0004]

[Problems to be solved by the device]

 As described above, the retainer 2 and the bezel 7 are fitted and connected like a cage in order to improve the fitting strength and to prevent air leaks and whistling noises due to the gaps. In addition, in consideration of assemblability, a slight gap t is provided between the cage connection portion, for example, between the fitting concave portion 5 and the engaging piece 10 and between the locking convex portion 6 and the engaging hole 11. In addition, since the dimensions of the retainer 2 and the bezel 7 change depending on the molding conditions and the like, the fitting connection is easy to slide, and the gap t between the fitting recess 5 and the engaging piece 10 is large. Is due to the absorption of product dimensional errors and the assemblability, and is merely to prevent disengagement and does not have the function of preventing sliding. Therefore, resin caused by vehicle vibration and heat from the retainer 2 and bezel 7 In order to expand and contract and change the wind direction of the register 1 Retainer 2 and the bezel 7 slides when applied, friction Kosuoto there has been a problem that occurs in the contact surface.

In order to prevent this frictional noise, a method of welding the retainer 2 and the bezel 7 by heat caulking or fixing with an adhesive, or applying a lubricant to the mat-shaped mating connection portion and sliding it This can be prevented by applying processing that does not easily generate abnormal noise, but in both cases secondary processing is required, which causes the problem of increased assembly time and equipment, and increased costs.

The present invention has been made to solve the above-mentioned conventional problems, and without a secondary process, a simple structure is attached to the bezel and the retainer, and the dimensional control portion is small, which is normally used. It is an object of the present invention to provide a fitting structure of a decorative frame and a case main body which can be assembled in the assembly step and which can prevent frictional noise.

[0007]

[Means for Solving the Problems]

 In order to solve the above technical problems, the present invention forms a fitting recess having a step edge for fitting a decorative frame and a case body to each other and having a locking projection on the case body side. In the configuration in which an engaging piece having an engaging hole that engages with the locking convex portion is formed on the side to engage and connect in a cage shape, the decorative frame and the case body are mutually connected. Insertion openings that open to the step edge are formed on the case body side at multiple points of the step edge that fits in, and a locking wall is formed to expand from at least one edge of the insertion opening. A guide protrusion is formed on the inner side of the insertion opening at a predetermined distance from the locking wall to provide a fitting receiving portion, and the insertion is provided on the decorative frame side in correspondence with the fitting receiving portion. Extending at least one locking arm insertable into the mouth, the locking arm elastically deforming around its base. The locking wall of the fitting receiving portion is formed to have substantially the same width as the space between the locking wall of the fitting receiving portion and the guide convex portion, and the locking wall is formed by inserting the locking arm into the fitting receiving portion. It exists in the fitting structure of the decorative frame and the case body, which are configured so that they can be clamped and fixed in a bent shape between the and the guide convex part.

[0008]

[Action]

 With the above configuration, when the locking arm is inserted from the insertion opening of the fitting receiving portion, the locking arm is guided outward by the guide convex portion so as to be interposed between the guide convex portion and the locking wall. It is fixed in a bent shape to allow the sliding of the decorative frame and the case body to each other.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a barrel type air-conditioning register 21 similar to the conventional one, and the register 21 includes a retainer 22, a bezel 27 and a barrel made of synthetic resin or the like. It is composed of twelve.

The retainer 22 and the bezel 27 are fitted and connected in a cage-like manner as in the conventional case. A step edge 23 is formed on four circumferences of the retainer 22 on the connection side. A fitting recess 25 is formed at a predetermined interval on the same side as the stepped surface 24, and a locking projection 26 is provided at substantially the center of the fitting recess 25.

Further, the bezel 27 is formed in a substantially rectangular frame body, and the stepped edge 23 is fitted onto the four sides of the connection side of the substantially rectangular tubular portion 28 that fits with the retainer 22 of the bezel 27. The stepped edge 29 is formed, and the upper and lower step edges 29 have predetermined engaging pieces 30 having engaging holes 31 that can be fitted into the fitting concave portions 25 of the retainer 22 and can be engaged with the locking convex portions 26. Projections are formed at intervals. A plurality of fitting assisting portions 35 are formed between the step edges 23 and 29 of the retainer 22 and the bezel 27 thus formed.

The fitting assisting portion 35 is formed at at least one position at a predetermined position on the upper and lower sides and between the step edges 23 and 29 of the retainer 22 and the bezel 27, and the fitting assisting portion 35. Is composed of a fitting receiving portion 36 formed on the retainer 22 side and an insertion portion 41 formed on the bezel 27 side. Since the fitting receiving portion 36 and the insertion portion 41 are provided in the same configuration, the fitting assisting portion 35 provided at the upper portion of the drawing will be described.

First, the fitting receiving portion 36 will be described. As shown in FIG. 2, the fitting receiving portion 36 is formed, for example, at a substantially central position between the fitting recesses 25, and the fitting receiving portion 36 has a step. An insertion opening 37 having a predetermined width is formed so as to open to the edge 23 side, and a guide surface 38 is formed on the entrance side of the insertion opening 37 so as to expand. Further, a locking wall 39 is formed on the inner side of the insertion opening 37 so as to open and expand at a predetermined angle α with respect to the center of the insertion opening 37, and the fitting receiving portion 36 is formed into a substantially funnel shape in a plane. A guide convex portion 40 having a predetermined diameter is formed on the center line on the back side of the insertion opening 37, and the guide wall 40 of the line perpendicular to the locking wall 39 from the center of the guide convex portion 40 and the guide wall 40. A predetermined gap h is formed between the convex portion 40 and the convex portion 40.

Further, the insertion portion 41 formed on the bezel 27 is provided between the locking pieces 30 so as to face the fitting receiving portion 36, and as shown in the drawing, there is a step edge between the locking pieces 30. An insertion portion 41 having a predetermined width and a predetermined length is formed in which a notch concave portion 42 is formed between the upper portions of 29, and the width of the insertion portion 41 is formed so that it can be inserted into the insertion opening 37. A slit 43 is formed at the center of the longitudinal direction of the fork to form a bifurcated locking arm 44, and a hole 45 having a predetermined diameter is formed through the base of the slit 43 to form a pair of locking arms. Reference numeral 44 is provided so as to be elastically displaceable in the left-right direction centering on the base portion. Further, the locking arm 44 is formed with a width ha that can be inserted between the locking wall 39 of the fitting receiving portion 36 and the guide convex portion 40, and at the front end side of the facing surface of the locking arm 44. A guide surface 46 is formed in an open shape. The width ha of the locking arm 44 and the distance h between the locking wall 39 and the guide protrusion 40 are formed to be approximately h = ha.

As described above, the fitting recess 25, the locking piece 30, the fitting receiving portion 36, and the inserting portion which are formed corresponding to predetermined positions of the step edges 23 and 29 of the retainer 22 and the bezel 27 in the vertical and horizontal directions. 41, when the step edges 23 and 29 are fitted to each other, the fitting recesses 25 and the locking pieces 30 are engaged with the locking projections 26 and the engaging holes 31 in the same manner as in the conventional case. The locking arm 44 of the insertion portion 41 formed on the side of the lever 27 is inserted into the insertion opening 37. In this case, for example, even if the locking arm 44 and the insertion opening 37 are slightly displaced, they are guided and inserted by the guide surface 38.

Then, the guide surfaces 46 formed at the tips of the left and right locking arms 44 are brought into contact with the guide protrusions 40 projecting on the center line of the insertion opening 37 in a substantially V shape, and further inserted. The right and left locking arms 44 are guided by the guide convex portion 40 and elastically displaced in the left-right direction in an expanding manner. The locking arm 44 having a width ha in the state of FIG. The guide protrusion 40 and the locking wall 39 are clamped and locked in a bent shape at a space h. This completes the fitting of the retainer 22 and the bezel 27.

With the retainer 22 and the bezel 27 fitted, the width ha of the locking arm 44 of each fitting assisting portion 35 and the distance h between the locking wall 39 and the guide protrusion 40 are approximately h = ha. Since it is formed in the above, it depends on this mutual fixation, and this configuration can prevent the sliding in the left-right direction S-S, and the sliding in the front-back F-F direction is one-sided coupling. As a result, the opened and expanded locking arm 44 acts in the closing direction to sandwich the guide convex portion 40, and the sliding force is prevented by this acting force and frictional force. Therefore, even if there is a gap t between the fitting recessed portion 25 other than the fitting assisting portion 35 and the engaging piece 30, the width ha of the locking arm 44 of each fitting assisting portion 35 and the locking wall 39 are different from each other. Friction noise due to sliding can be prevented only by controlling the dimension h of the guide convex portion 40.

It should be noted that, as shown in FIG. 8, a bridge 47 may be provided so as to straddle the insertion opening 37 in the above-described embodiment so as to prevent the locking arm 44 from being disengaged upward. 9 and 10 show another mode of the fitting assisting portion 35, and the fitting assisting portion 50 shown in FIG. 9 shows the case where there is one locking arm 51. Reference numeral 51 is formed to have a predetermined length and a width ha, and an arc-shaped constricted portion 52 is formed on one side surface of the base portion thereof, and a guide surface 53 is obliquely formed on the tip side of the side surface where the constricted portion 52 is formed. The locking arm 51 is formed so as to be displaceable to the left side in the drawing around the base. An insertion opening 55 is formed in the fitting receiving portion 54 corresponding to the locking arm 51, and a bending path 56 is formed in the insertion opening 55 from the predetermined position to the left in the figure at a predetermined angle. A semicircular guide protrusion 57 is provided on one wall 56a of the curved path 56, and a gap h is formed between the guide protrusion 57 and the other wall 56b. The width ha is formed to have substantially the same dimension as the distance h between the guide protrusion 57 and the other wall 56b. The rest of the configuration is the same as in the above embodiment. Therefore, since the fitting assisting portion 50 is applied to a place where the mounting space is small, it has substantially the same operational effect as the above embodiment. In addition, the direction of the locking arm 51 and the bending path 56 may be the right direction on the opposite side of the drawing.

Further, the fitting assisting portion 60 shown in FIG. 10 is provided in a place with a relatively large mounting space or when fitting strength is required. Is formed to be relatively wide, and locking walls 63 are formed at both sides of the insertion opening 62 so as to open and expand at a predetermined angle. Two guide protrusions 64 having a diameter of 4 are formed, and the corresponding guide protrusions 64 and the locking walls 63 are formed at intervals h. Further, the insertion portion 65 is formed with a central shaft 66 which is inserted between the guide convex portions 64 without any gap and locking arms 67 and 68 on the left and right, and the width ha of the locking arms 67 and 68 and the guide convex portions. The portion 64 and the locking surface 63 are formed to have substantially the same width as the space h. Therefore, the fitting assisting portion 60 also has substantially the same operational effect as the above embodiment.

Although the barrel type register 21 is illustrated in the above embodiment, the present invention is not limited to this, and is applied to the cross fin type register 70 shown in FIG. The invention is not limited to the case, and is also applied to the case where the case body corresponding to the retainer and the decorative frame corresponding to the bezel are fitted and connected in a seal cage shape.

[0021]

[Effect of the device]

 According to the present invention, an insertion opening that opens to the step edge is formed on the case body side at a plurality of step edges where the decorative frame and the case body are fitted to each other, and the opening is opened from at least one of the edges. The engagement wall is formed in an expanded shape, and a guide protrusion is formed on the inner side of the insertion port with a predetermined distance from the engagement wall to provide a fitting receiving portion. At least one locking arm that can be inserted into the insertion opening extends corresponding to the fitting receiving portion, and the locking arm is provided so as to be elastically displaceable around the base portion thereof. Is formed to have almost the same width as the distance between the locking wall of the section and the guide convex section, and by inserting the locking arm into the fitting receiving section, a bent shape is formed between the locking wall and the guide convex section. Since it is configured so that it can be fixedly attached to each other, it is possible to support each fitting with the case body and the decorative frame. Since the width of the locking arm and the distance between the locking wall and the guide convex part are formed to have almost the same size, they depend on the mutual fixing. In addition to preventing it, sliding in the front-rear direction acts as an action force that the locking arm opened by one end coupling moves to the guide convex part, and this action force and friction force can easily slide. Be blocked. Therefore, even if there is a gap between the fitting recess other than the fitting assisting portion and the engaging piece, the width of the locking arm of each fitting assisting portion and the distance between the locking wall and the guide protrusion are different. Friction noise due to sliding can be prevented only by controlling dimensions.

[Brief description of drawings]

FIG. 1 is a perspective view of an air conditioning register.

FIG. 2 is a partial perspective view of a step edge of a retainer and a bezel.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a plan view of a fitting assisting portion.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a perspective view illustrating an operation of a fitting assisting portion.

FIG. 8 is a perspective view showing another aspect of the fitting receiving portion of the fitting assisting portion.

FIG. 9 is a plan view showing another aspect of the fitting assisting portion.

FIG. 10 is a plan view showing still another aspect of the fitting assisting portion.

FIG. 11 is a perspective view of a cross fin type air-conditioning register in which a fitting assisting portion is formed.

FIG. 12 is a perspective view of a conventional air conditioning register.

FIG. 13 is an exploded perspective view of a conventional air conditioning register.

FIG. 14 is a plan view showing engagement between a conventional fitting recess and an engagement piece.

[Explanation of symbols]

 21, 70 Air-conditioning register 22 Retainer (case body) 23, 29 Step edge 25 Fitting recess 26 Locking convex part 27 Bezel (decorative frame) 30 Locking piece 31 Engaging hole 35, 50, 60 Fitting assisting part 36 , 54, 61 Fitting receiving part 37, 55, 62 Insertion port 39, 56b, 63 Locking wall 40, 57, 64 Guide convex part 44, 51, 67, 68 Locking arm

Claims (1)

[Scope of utility model registration request] 1. A fitting recess having a step edge for fitting the decorative frame and the case main body to each other and having a locking projection on the case main body side, and corresponding to the fitting recess on the decorative frame side. A plurality of step edges for fitting the decorative frame and the case body to each other in a configuration in which an engaging piece having an engaging hole that engages with the locking convex portion is formed to fit and connect in a cage shape. An insertion opening that opens to the step edge is formed on the side of the case main body at a location, a locking wall is formed in an expanding manner from at least one edge of the insertion opening, and the locking is provided on the back side of the insertion opening. A guide protrusion is formed at a predetermined distance from the wall to provide a fitting receiving portion, and at least one engaging member that can be inserted into the insertion opening corresponding to the fitting receiving portion on the decorative frame side. The stop arm is extended, and the locking arm is provided so as to be elastically displaceable around its base,
Further, the fitting wall is formed to have a width substantially equal to the interval between the locking wall of the fitting receiving portion and the guide convex portion, and by inserting the locking arm into the fitting receiving portion, a space between the locking wall and the guide convex portion is formed. The fitting structure of the decorative frame and the case body that can be fixed in a bent shape.