KR102085568B1 - Assembling structure of fastener for door trim - Google Patents

Abstract

The present invention relates to an assembly structure of a fastener for a door trim, which constitutes an assembly structure which assembles the fastener on an assembly unit of the door trim. According to the present invention, the assembly unit comprises: at least one body which makes an enclosure shape with an inner space to protrude from one side of the door trim; and an assembly hole in a hole shape which penetrates an upper side of the body to communicate with the inner space. The fastener comprises: a center bump; a first bump which is created by protruding from one end of the center bump to have a greater diameter than that of the assembly hole and to be located in the inner space through the assembly hole; a second bump which is arranged at a certain interval from the first bump to protrude from one side of the center bump, and, with the first bump arranged in the inner space, hang on an upper surface of the body; and a third bump which is created by protruding from the other end of the center bump to be joined with the door panel. According to the present invention, since the first bump is inserted in the assembly hole by a forced insertion and arranged in the inner space, the fastener can be detachably assembled on the assembly unit.

Description

ASSEMBLING STRUCTURE OF FASTENER FOR DOOR TRIM}

The present invention relates to a fastener assembly structure for a door trim, and more particularly, to a fastener assembly structure for a door trim that can be detachably mounted to the door trim.

Generally, fasteners are used in the automobile industry to easily combine or mount various internal and external parts of a vehicle, or to connect and disconnect individual parts. In particular, the door trim among the various internal and external parts of the vehicle described above is attached to the interior side of the vehicle door, which protects the occupant from impact, improves the interior finish, and installs various components for the user's convenience. It is formed to be. As such, the door trim is a coupling structure for coupling to the door panel, and an assembly structure by fasteners is widely used.

Patent Document No. 10-1287188 (2013.07.11) discloses a door trim assembly having a fastener separation prevention structure. The assembly structure according to the prior art is to be bent along the door trim, the fastener connecting the door panel and the door trim and the coupling body, the fastener coupling portion is formed protruding on one side facing the door panel side of the vehicle as shown in FIG. It is composed of a fastener insertion groove formed, characterized in that the fastener from the door trim can not be easily separated.

As described above, the conventional door trim assembly structure forms a structure in which the fastener 2 is fitted into the fastener insertion groove 3a open to one side of the fastener coupling part 3, as shown in FIG. In order to prevent the fastener 2 from being separated, the fastener 2 may be formed through various structures such as forming protrusions 3b on the left and right sides of the fastener insertion groove 3a, or molding the shape of the fastener insertion groove 3a into different shapes. ) To prevent separation.

However, even if the conventional door trim assembly structure prevents the fastener from being separated through various structures as described above, when an impact or other external force is generated, the insertion is open to one side of the fastener coupling part 3 eventually. There was a problem that the fastener 2 is separated through the groove 3a. That is, there is a problem in that the above-described separation phenomenon of the fastener 2 is continuously generated unless the insertion groove 3a of the fastener coupling part 3 is closed.

In addition, the conventional door trim assembly structure uses a separate member when closing the insertion groove (3a) of the fastener coupling portion 3 by using a separate member to prevent the separation phenomenon of the fastener (2) described above. As the coupling structure becomes more complicated, there is a problem of cost increase, and the process of separating the fastener 2 inserted into the fastener coupling part 3 during the maintenance of the door trim has a very complicated and difficult problem.

Korean Registered Patent No. 10-1287188 (2013.07.11) "Door trim assembly with fastener release prevention structure"

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a fastener assembly structure for a door trim that can be detachably assembled to the door trim.

In particular, while assembling the fastener to the door trim through the interference fit method, an object of the present invention is to provide a fastener assembly structure for the door trim that can be separated from the assembled fastener.

Another object is to provide a fastener assembling structure for a door trim that can separate the fastener from the door trim through simple lever operation when it is desired to separate the fastener assembled to the door trim.

In order to achieve the above object, the fastener assembly structure for the door trim according to the present invention is an assembly structure for assembling the fastener to the assembly portion of the door trim, and may be achieved including the assembly portion and the fastener.

As described above, the assembling unit has at least one body protruding to one side of the door trim to form an enclosure provided with an inner space; And an assembling hole formed through the upper portion of the body so as to communicate with the inner space.

As described above, the fastener has a center protrusion; A first protrusion protruding from one end of the center protrusion to form a diameter larger than a diameter of the assembly hole and disposed in the inner space through the assembly hole; A second protrusion that is formed at a predetermined interval from the first protrusion, protrudes on one side of the center protrusion, and is caught on an upper surface of the body in a state where the first protrusion is disposed in the inner space; And a third protrusion protruding from the other end of the center protrusion and coupled to the door panel.

As described above, the fastener assembly structure for the door trim according to the present invention including the above-described configuration may be detachably attached to the assembly unit as the first protrusion is inserted into the assembly hole and disposed in the inner space. It can be assembled as possible.

The fastener may further include a first groove having a hole shape formed in the longitudinal direction of the center protrusion.

As described above, the first groove is gradually reduced in diameter as the first protrusion is elastically deformed by the external pressure generated in the state in which the first protrusion is fitted into the assembly hole. In the state disposed in the inner space, the external pressure applied to the first projection disappears, the first variable space that the diameter is gradually restored to its original state as the first projection is elastically deformed; can be achieved.

The fastener may further include at least one second groove which is partially cut out of the first protrusion and opened outward from the first groove.

As described above, the second groove is gradually reduced in width as the first protrusion is elastically deformed by the external pressure generated in the state in which the first protrusion is inserted into the assembly hole. In the state disposed in the interior space, the external pressure applied to the first projection disappears, the second variable space that is gradually restored to its original state as the first projection is elastically deformed; can be achieved.

The assembly unit may protrude from the inner space of the body, and an end thereof may be exposed through an opening provided at one side of the body, and may elastically support the first protrusion disposed in the inner space. The lever may further include.

Here, in a state in which the lever elastically supports the first protrusion disposed in the inner space, one surface of the first protrusion is in close contact with the inner surface of the body to form a contact area between the first protrusion and the body. As a result, the flow of the first body is prevented, and a flow space between the first protrusion and the body to enable the flow of the first protrusion as the lever is bent and deformed by the pressing force.

In addition, the assembly part is formed to protrude on one side of the lever, the insertion protrusion is inserted into the first groove of the fastener disposed in the inner space to maintain or expand the size of the diameter formed by the first groove. It may further include;

For example, the insertion protrusion may have a diameter larger than the diameter of the first groove, and the insertion protrusion may be inserted into the first groove to extend the diameter of the first groove.

In this case, the diameter of the first groove is expanded by the insertion protrusion, and the first protrusions are spaced apart at regular intervals toward the outside of the center protrusion, respectively. The contact area between the upper surface and the inner surface of the body can be expanded.

For example, the insertion protrusion may have a diameter smaller than the diameter of the first groove, and the insertion protrusion may be inserted into the first groove to maintain the size of the diameter of the first groove.

According to the fastener assembly structure for the door trim according to the present invention, the fastener can be detachably assembled to the assembly part by inserting the first protrusion into the assembly hole in the interior space of the body.

As described above, the first protrusion may be elastically deformed by the external pressure generated at this time as it is inserted into the assembly hole and easily pass through the assembly hole to be in the inner space.

In addition, after the first protrusion is disposed in the inner space, the external pressure applied to the first protrusion is removed, and the upper surface of the first protrusion is caught on the inner surface of the body as the first protrusion is elastically restored to its original state. According to the locking structure, the first protrusion may be prevented from being separated from the inner space of the body.

On the other hand, as the elastic bottle type of the first protrusion is made easier by the first groove and the second groove provided in the fastener, the first protrusion may be disposed in the inner space of the body more easily through the assembly hole. That is, the fastener can be easily assembled to the assembly portion.

And, by temporarily fixing the first protrusion disposed in the inner space of the body through the lever in a state in which it is elastically supported, the first protrusion may be further prevented from being separated from the inner space of the body.

In addition, as the diameter of the first groove is maintained or expanded through the insertion protrusion, the first protrusion may be further prevented from being separated from the inner space of the body.

In addition, the support force for supporting the first protrusion is removed by applying the pressing force to the lever to deform so that the first protrusion is elastically deformable, and a play space is provided so that the first protrusion is provided from the inner space of the body. A detachable state can be achieved. That is, the fastener can be easily separated from the assembly portion.

1 is a view showing a conventional door trim assembly structure.
2 is a view showing the assembled state of the fastener assembly structure for the door trim according to the present invention.
3 is an exploded view of FIG. 2.
4 is a view showing a state of use of the fastener assembly structure for the door trim.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Unless otherwise defined, all terms in the specification are the same as the general meaning of the terms understood by those skilled in the art, and if the terms used herein conflict with the general meaning of the terms Is in accordance with the definitions used herein.

On the other hand, the configuration or system of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiments of the present invention, the same reference numerals used throughout the specification are the same components Indicates.

The fastener assembly structure 100 for the door trim according to the present invention includes an assembly unit 110 and a fastener 130 as shown in FIG.

Assembly unit 110 is a fastener 130 to be described later is configured to be coupled, a plurality of the door trim can be provided on one side, as shown in Figure 3 the body 111 and the assembly hole 113 Include.

Body 111 is a configuration for connecting the fastener 130 to be described later to the door trim, it may be formed on one side of the door trim. In detail, the body 111 may form a housing in which the internal space S is provided.

On the other hand, the body 111 may be provided with an opening 112 open at one side.

The opening 112 is configured to provide an operation space of the lever 115 to be described later, and provides a passage communicating with the internal space S through one side of the body 111 as shown in FIGS. 2 and 3. A portion of the lever 115 may be exposed to the outside of the body 111, a predetermined range of operating space for the operation of the lever 115 that is bent and deformed by an external force as shown in (c) of FIG. May be provided.

The assembly hole 113 is configured to provide a passage through which the first protrusion 133 of the fastener 130, which will be described later, enters and exits the internal space S of the body 111, so as to communicate with the internal space S. In this case, a hole formed through the upper portion of the body 111 may be formed. Such, the assembly hole 113 may form a predetermined diameter in a circular shape, to form a diameter or the same diameter as the diameter of the center projection 131 of the fastener 130 to be described later, the fastener 130 of It is preferable to form a diameter smaller than the diameter formed by the first protrusion 133. This is to prevent the first protrusion 133, which will be described later, disposed in the internal space S of the body 111 from passing through the assembly hole 113 from being separated from the internal space S of the body 111. As will be described in detail through the assembly structure and the separation structure of the fastener 130 to be described later.

The assembly unit 110 may further include a lever 115.

The lever 115 is configured to detachably fasten the fastener 130 connected to the assembling unit 110. As shown in FIGS. 2 to 4, the lever 115 forms the internal space S of the body 111 described above. Protruding from one side, the protruding end may form a bar that is exposed to the outside through the opening 112 of the body 111. Such, the lever 115 is bent and deformed when the pressing force is provided by the operator, it may have an elastic restoring force is restored to the original state while the bending deformation portion provided is removed.

Here, the lever 115 is disposed in the lower portion of the above-described assembly hole 113, when the first protrusion 133 to be described later is disposed in the interior space (S) through the assembly hole 113, FIG. As shown in (b) or (d) of FIG. 4, one side surface of the first protrusion 133, that is, the upper surface of the first protrusion 133 is elastically supported in the state in which the lower surface of the first protrusion 133 is elastically supported. It can be in close contact with the inner surface. In this case, a frictional force is generated as the contact area is formed between the upper surface of the first protrusion 133 and the inner surface of the body 111, thereby preventing the flow of the first protrusion 133. That is, the lever 115 may temporarily fix the first protrusion 133 disposed in the internal space S of the body 111 by the above-described support force and friction force.

In addition, in the state in which the lever 115 elastically supports the first protrusion 133 as described above, when a pressing force by the operator is provided to the end exposed to the outside of the body 111, (c) of FIG. It may be bent deformation as shown in). In this case, a flow space in which the first protrusion 133 may flow may be provided between the inner surface of the body 111 and the upper surface of the lever 115. That is, the lever 115 may be flexibly deformed as the pressing force is provided by the operator so that the first protrusion 133 may be detached from the internal space S of the body 111.

The assembly 110 may further include an insertion protrusion 117.

Insertion protrusion 117 is a configuration for maintaining or expanding the size of the diameter formed by the first groove 138 formed in the center protrusion 131 to be described later, as shown in Figures 2 to 4 the lever ( 115 may be protruded on one side. The insertion protrusion 117 may protrude in the form of a cone having a predetermined length, and in detail, from a vertex forming a cone to a predetermined height (hereinafter, referred to as a 'first portion'), a fastener (to be described later) The first groove 138 of the 130 to form a diameter smaller than the size of the diameter, from the predetermined height to the bottom of the cone (hereinafter referred to as 'second portion') of the fastener 130 to be described later The diameter of the diameter equal to or larger than that of the diameter formed by the first groove 138 may be achieved. Accordingly, the insertion protrusion 117 may be easily inserted into the first groove 138 in a penetrating state because the diameter of the first portion is smaller than the diameter of the first groove 138.

Here, the insertion protrusion 117 is inserted into the first groove 138 as described above, when the size of the diameter formed by the second portion is the same as the size of the diameter formed by the first groove 138, FIG. As shown in (d) of 4, the shape and diameter of the inner circumference of the first groove 138 can be maintained as it is, and the size of the diameter formed by the second portion is made by the first groove 138. When larger than the size of the diameter, the diameter formed by the first groove 138 while deforming the shape formed by the inner circumference of the first groove 138 to the shape corresponding to the second portion, as shown in (b) of FIG. You can expand the size of.

The fastener 130 is a configuration for connecting the door trim and the door panel, and as shown in FIG. 3, the center protrusion 131, the first protrusion 133, the second protrusion 135, and the third protrusion 137. It includes. For example, the fastener 130 may be molded of a material such as synthetic resin, such as rubber or plastic, in which some or all of the components have elastic restoring force.

The center protrusion 131 is configured to support the first protrusion 133 to the third protrusion 137 to be described later, and may have a cylindrical shape having a length. The center protrusion 131 may form a predetermined diameter. It is preferable that the center protrusion 131 forms the same diameter as the diameter of the above-described assembly hole 113 or a small diameter. This is to allow the center protrusion 131 inserted into the assembly hole 113 to easily enter and exit.

The first protrusion 133 is configured to connect the fastener 130 to the body 111, and may have a disk shape that protrudes along an outer circumferential surface at one end of the center protrusion 131 described above. The first protrusion 133 may form a diameter having a predetermined size, and preferably, the first protrusion 133 may have a diameter larger than the diameter of the assembly hole 113. This means that the first protrusion 133 disposed in the inner space S of the body 111 through the above-described assembly hole 113 is caught by the inner surface of the body 111 and is separated from the inner space S. To be prevented.

Here, it has been described that the first protrusion 133 may pass through the assembly hole 113 as described above. In the state having the elastic restoring force as described above, the assembly hole as shown in FIG. You can pass through 113 by force. More specifically, the first protrusion 133 is deformed by the external force generated in the process of being fitted into the assembly hole 113 as it is reduced to the size of the diameter equal to or smaller than the diameter of the assembly hole 113 formed. ) Can be easily passed.

In addition, when the first protrusion 133 achieves a state disposed in the internal space S of the body 111 by passing through the assembly hole 113, the external force applied to the first protrusion 133 may be reduced in size by the elastic restoring force. The size as well as the shape can be restored to its original state.

The second protrusion 135 is configured to adjust the insertion depth of the fastener 130 inserted through the assembly hole 113 of the body 111. The second protrusion 135 is disposed at a predetermined time from the first protrusion 133 described above. Furnace, it may form a disk shape protruding along the outer peripheral surface on one side of the center projection (131). The second protrusion 135 may form a diameter having a predetermined size, and preferably, the second protrusion 135 may have a diameter larger than the diameter of the assembly hole 113. This, the first protrusion 133 is inserted into the internal space (S) of the body 111 through the assembly hole 113 so that the second projection 135 is caught on the upper surface of the body 111 fasteners. This is to prevent the insertion of 130.

The third protrusion 137 is connected to the door panel, and may have a protrusion shape that protrudes along the longitudinal direction at the other end of the center protrusion 131 described above. The third protrusion 137 may form various structures for connection with the door panel, which is general, and detailed description thereof will be omitted.

The fastener 130 may further include a first groove 138.

The first groove 138 is a configuration in which the above-described insertion protrusion 117 is inserted in a penetrating state, and as shown in FIGS. 3 and 4, a predetermined depth along the length direction inside the center protrusion 131 described above. It can achieve a hole shape that is formed as a depression. The first groove 138 forms a diameter of a predetermined size, but may form a first variable space in which the size of the diameter is variable according to the following cases.

Here, the size of the diameter constituting the first groove 138 may be reduced while elastically deformed by the external force generated as the first protrusion 133 is inserted into the assembly hole 113 by interference fit, the first protrusion At the same time as the external force applied to the 133 disappears and can be restored to its original state by the elastic restoring force, the insertion protrusion 117 having a second portion of the same diameter as the size of the diameter formed by the first groove 138 is the first External force generated when the insertion protrusion 117 is inserted into the groove 138 and is maintained as it is or has a second portion having a diameter larger than the diameter of the first groove 138 is inserted into the first groove 138. It can be expanded while being elastically deformed, it will be described in detail through the assembly structure and the separation structure of the fastener 130 to be described later.

In addition, the fastener 130 may further include a second groove 139.

As described above, the second groove 139 is configured to have an interval corresponding to the shape deformation of the first protrusion 133, and a portion of the first protrusion 133 is cut as shown in FIGS. 3 and 4. To form a groove that is opened outward from the first groove 138. The second grooves 139 form a gap of a predetermined width, but may form a second variable space in which the width of the gap is variable according to the following cases. For example, the width of the gap formed by the second groove 139 may be gradually reduced in elasticity by the external force generated as the first protrusion 133 is inserted into the assembly hole 113 by interference fit, and the gap may be gradually reduced. The external force applied to the first protrusion 133 disappears and can be restored to its original state by an elastic restoring force, and the insertion protrusion 117 having a second portion having a diameter equal to the size of the diameter formed by the first groove 138. Is inserted into the first groove 138 and maintained as it is, or as the insertion protrusion 117 having a second portion of a diameter larger than the size of the diameter formed by the first groove 138 is inserted into the first groove 138 It can be expanded while elastically deformed by the generated external force. Accordingly, the second groove 139 may be easily adjusted in response to the shape deformation of the first protrusion 133 that is elastically deformed.

Here, since the second groove 139 divides the first protrusion 133 into a plurality of parts to form a separate state, the second groove 139 is easily elastically deformed or expanded as described above. Interference can be prevented from occurring, and stress concentration due to elastic deformation can be prevented from occurring. That is, the second groove 139 may prevent the damage caused by the accumulation phenomenon of the fatigue degree due to the elastic deformation of the first protrusion 133 or the stress concentration phenomenon.

As such, the assembly 110 and the fastener 130 including the above-described configuration may be provided, and based on this, the fastener 130 may be detachably assembled to the assembly 110. The assembly structure and the separation structure will be described with reference to FIG. 4 as follows.

First, as shown in FIG. 4A, the first protrusion 133 of the fastener 130 is assembled to the assembly unit 110 in a state where the fastener 130 is disposed on the assembly unit 110. Insert into the hole 113.

Here, the first protrusion 133 has a diameter larger than the size of the diameter formed by the assembly hole 113 as described above, but through the assembly hole 113 by interference fit as shown in Figure 4 (b). As shown, it may be disposed in the accommodation space of the body 111. In detail, the first protrusion 133 may be reduced in size while being elastically deformed by an external force generated while passing through the assembly hole 113 by interference fit. In addition, the first protrusion 133 may be elastically deformed more easily by the first groove 138 and the second groove 139, and thus the size of the diameter may be further reduced more easily. Accordingly, the first protrusion 133 may be disposed in the internal space S of the body 111 by easily passing through the assembly hole 113.

In addition, the first protrusion 133 passing through the assembly hole 113 may be removed from the external force applied thereto and at the same time, the shape and the size of the diameter may be restored by the elastic restoring force. Accordingly, as shown in (b) or (d) of FIG. 4, the first protrusion 133 is disposed in the internal space S of the body 111, and a part of the first protrusion 133 is an inner surface of the body 111. It can achieve the condition

As described above, in the door trim fastener assembly structure 100 according to the present invention, as shown in FIG. 4B, the first protrusion 133 of the fastener 130 is fitted into the assembly hole of the body 111. When disposed in the interior space S through the 113, the fastener 130 is separated from the body 111 because the upper surface of the first protrusion 133 is engaged with the inner surface of the body 111. Can be prevented.

Accordingly, the fastener assembly structure 100 for the door trim according to the present invention provides only the assembly hole 113 in the form of a hole for assembling the fastener 130, and provides the fastener 130 insertion groove that is open as before. Since the fastener 130 is separated from the coupling portion by the impact or other external force because it does not solve the existing problem.

On the other hand, in the state where the first protrusion 133 is simply disposed in the internal space (S) of the body 111, the impact or other external force to the extent that the elastic deformation of the first protrusion 133 is made, the above-described As described above, the first protrusion 133 may be separated from the internal space S of the body 111 through the assembly hole 113 in the same manner as the passage through the assembly hole 113. By the assembly structure, the separation of the first protrusion 133 can be easily prevented.

First, as shown in (b) of FIG. 4, the first protrusion 133 is disposed in the inner space S of the body 111 and elastically supported by the lever 115 while being in the body 111. It adheres to the side.

Here, the first protrusion 133 may form a temporarily fixed state by the supporting force of the lever 115, and in addition, the upper surface of the first protrusion 133 is in close contact with the inner surface of the body 111, the contact area The flow can be prevented by the frictional force generated by this.

Meanwhile, the lever 115 supports the lower surface of the first protrusion 133 in a horizontal state. The first protrusion 133 is elastically deformed in the longitudinal direction of the insertion protrusion 117 through the supporting force generated at this time. It is limited, only to allow the elastic deformation in the outward direction of the insertion projection (117).

Next, in a state in which the first protrusion 133 is disposed in the inner space S of the body 111 and is elastically supported by the lever 115, the insertion protrusion 117 protruding from the lever 115 is formed. Is inserted into the first groove 138 of the fastener 130 in a penetrating state.

Here, when the size of the diameter formed by the second portion of the insertion protrusion 117 is greater than the size of the diameter formed by the first groove 138, the first protrusion 133 is as shown in FIG. 4B. As well as the size of the diameter is expanded, in conjunction with this may be elastically deformed in the outer direction, that is, the horizontal direction of the center projection 131. In detail, each of the first protrusions 133, which are respectively cut by the first grooves 138 and the second grooves 139, is guided by the insertion protrusions 117, and is opened at a predetermined interval toward the horizontal direction. Can be achieved. As a result, the first protrusion 133 may be temporarily fixed in the internal space S of the body 111 in a state in which the diameter of the first protrusion 133 is expanded. In this case, the upper surface and the body 111 of the first protrusion 133 may be fixed. As the contact area between the inner surfaces of the expansion of the friction force increases, the flow of the first protrusion 133 can be more easily prevented.

In addition, when the size of the diameter formed by the second portion of the first protrusion 117 is equal to the size of the diameter formed by the first groove 138, the first protrusion 133 is as shown in FIG. 4D. In addition to maintaining the size of the diameter, it is also possible to keep the shape intact.

Therefore, even when an impact or other external force is generated, the first protrusion 133 is fixed by the support force and the friction force generated by the lever 115, and the size of the diameter is maintained or expanded by the insertion protrusion 117. As it becomes impossible to pass through the assembly hole 113, it can be easily prevented from being separated from the internal space (S) of the body 111.

On the other hand, since the lever 115 is elastically supporting the first protrusion 133 as described above, when receiving a pressing force by the operator, as shown in (c) of FIG. 4, the first protrusion is elastically deformed. It provides a clearance space capable of flow of (133). Accordingly, the lever 115 may release the temporarily fixed state of the first protrusion 133.

Here, since the first protrusion 133 is elastically deformable in the vertical direction or the horizontal direction as the temporary fixing state by the lever 115 is released, the internal space of the body 111 through the assembly hole 113 ( A state can be detached from S).

As such, the assembly structure of the door trim fastener 130 according to the present invention can be detachably fixed to the assembly unit 110 through the above-described assembly structure and separation structure of the fastener 130. .

100: Fastener assembly structure for door trim
110: assembly portion 111: body
112 opening 113 assembling hole
115: lever 117: insertion projection
130: fastener 131: center projection
133: the first projection 135: the second projection
137: third projection 138: the first groove
139: Second Home

Claims (5)

In the assembling structure for assembling the fastener to the assembly portion of the door trim,
The assembly unit,
At least one body protruding from one side of the door trim to form an enclosure having an inner space; And
And a hole in the form of a hole formed through the upper portion of the body so as to communicate with the inner space;
The fastener,
Center turning;
A first protrusion protruding from one end of the center protrusion to form a diameter larger than the diameter of the assembly hole and disposed in the inner space through the assembly hole;
A second protrusion which is formed at a predetermined interval from the first protrusion, protrudes on one side of the center protrusion, and is caught on an upper surface of the body in a state where the first protrusion is disposed in the inner space; And
And a third protrusion protruding from the other end of the center protrusion and coupled to the door panel.
Characterized in that the fastener is detachably assembled to the assembly portion as the first protrusion is inserted into the assembly hole is arranged in the inner space,
The fastener,
A first groove having a hole shape formed in the longitudinal direction in the center protrusion; and
And at least one second groove which is partially cut out of the first protrusion and is opened outward from the first groove.
delete delete The method of claim 1, wherein the assembly unit,
Protruding from the inner space of the body, the end is formed through a bar exposed through the opening provided on one side of the body, the elastic support for the first projection disposed in the inner space of the first projection A fastener assembly structure for a door trim further comprising a lever for limiting the elastic deformation.
The method of claim 4, wherein the assembly unit,
A protrusion formed on one side of the lever and inserted into the first groove of the fastener disposed in the inner space to maintain or expand the size of the diameter of the first groove; Fastener assembly structure for door trim.

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