KR102117044B1 - Hardware structure for preventing rotation - Google Patents

Abstract

An object of the present invention is to provide an anti-rotation hardware structure capable of firmly assembling an assembly with a bolt member by taking a fixed structure in which a nut hardware is not rotated on a vehicle body panel. The anti-rotation hardware structure according to the present invention includes: a panel main body having a first panel, and a second panel coupled to the first panel so as to form a closed space between the first panel; and a nut hardware wherein one end unit is welded to the first panel in the closed space, and which has a nut hole. In the first panel, a first through-hole communicating with the nut hole is formed so that the bolt member assembled to the nut hole is penetrated. In order to block rotation of the nut hardware welded to the first panel, a key assembly structure is formed at one end unit of the nut hardware, and the first panel.

Description

Anti-rotation hardware structure {HARDWARE STRUCTURE FOR PREVENTING ROTATION}

The present invention is an anti-rotation hardware structure, and relates to an anti-rotation hardware structure in which a bolt member is inserted into a nut hardware.

Automobile body parts are made of body parts as they are combined into module unit parts by welding and connecting steel material parts to each other.

In this case, the nut hardware or the bolt hardware is welded to the body parts combined in a module unit, and the assembly is assembled to the welded nut hardware or the bolt hardware using a bolt member or a nut member, thereby driving a vehicle or an internal or external component. Assemble them.

In a structure in which hardware such as nut hardware or bolt hardware is welded to such a body part, hardware has been conventionally welded by forming a protrusion on the hardware and pressing the protrusion to melt it.

In addition, in recent years, a process in which a protrusion is welded and attached using an electroforming protrusion formed on a surface circumference of a nut hardware or a bolt hardware is further developed and applied.

As described above, the nut hardware or bolt hardware welded to an automobile body part has an important structure for fastening and assembling an assembly.

If hardware such as nut hardware and bolt hardware is not firmly welded to the vehicle body panel, it is difficult to assemble and disassemble the assembly, and difficult to disassemble the parts.

However, the nut hardware or the bolt hardware is usually welded to the rear of the body panel, making it difficult to distinguish the welding performance visually, and even if it is welded, if the welding strength is weakly welded, the bolt member or the nut member for tightening the assembly may be affected by the rotational force. There is a problem in that the welding of the nut hardware or the bolt hardware is separated.

However, when welding separation (falling) occurs in a state in which the bolt member or the nut member is fastened to the nut hardware or the bolt hardware, the fixing part is lost, and thus, when the bolt is rotated, it is rotated together, so that it is not fastened or released There is a problem that occurs.

Republic of Korea Registered Patent Publication No. 10-1880981

The present invention was devised to solve the above problems, and its purpose is to provide an anti-rotation hardware structure capable of firmly assembling an assembly with a bolt member by taking a fixed structure in which the nut hardware is not rotated on the body panel. There is this.

In order to achieve the above object, the anti-rotation hardware structure according to an embodiment of the present invention includes a first panel, and a second panel coupled to the first panel to form a closed space between the first panel and the first panel. Panel body having a; And a nut hardware having a nut hole through which one end is welded to the first panel in the closed space, and the bolt member is screwed so that a bolt member is assembled to the first panel outside the closed space. The first panel is formed with a first through hole communicating with the nut hole so that the bolt member penetrates, and one end of the nut hardware is configured to block rotation of the nut hardware welded to the first panel. A key assembly structure that is assembled with each other is formed on the first panel and the first panel,
In the key assembly structure, a first key projection is formed at one end of the nut hardware, and a first key groove is formed in the first panel to be inserted into the edge of the first through hole in the first panel,
The second panel, the support portion is formed to support the other end of the nut hardware,
A second through hole communicating with the nut hole is formed in the support portion of the second panel,
The bolt member is inserted into one side of the nut hole and fastened to the nut hole,
It further includes a clamp bolt that is inserted into the other side of the nut hole and fastened to the nut hole while penetrating the second through hole to fix the nut hardware to the second panel to block rotation of the nut hardware.
The clamp bolt,
The bolt member is inserted into the remaining portion where the bolt member is not fastened in the nut hole so that the assembly is assembled to the first panel,
The support part supports the other end of the nut hardware and blocks the rotation of the nut hardware, so that an anti-skid pad is attached or an anti-skid coating part is formed, and the anti-skid pad and non-slip coating part are made of rubber or silicone material. Lose,
In the second panel, a second key groove is formed at the edge of the second through hole, and a key assembly structure in which a second key projection is inserted into the second key groove at the other end of the nut hardware is further configured,
A welding protrusion line is formed at the other end of the nut hardware, and the other end of the nut hardware is laser welded to the second panel in the closed space.

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The anti-rotation hardware structure according to the present invention has an effect of blocking rotation of the nut hardware welded to the first panel by configuring a key assembly structure at one end of the nut hardware and the first panel.

In addition, in the anti-rotation hardware structure according to the present invention, a second panel is provided with a support portion supporting the other end of the nut hardware, so that the first key projection of the nut hardware is first of the first panel while blocking rotation of the nut hardware. It has the advantage of preventing it from falling out of the keyway.

In addition, the anti-rotation hardware structure according to the present invention has an advantage of further preventing the rotation of the nut hardware by being configured with a non-slip pad or anti-slip coating on the support.

In addition, the anti-rotation hardware structure according to the present invention, the second through-hole is formed in the support portion, and the clamp bolt is fastened to the second through-hole, so that the nut hardware is more firmly fixed to the second panel, the nut It has the effect of reinforcing the blocking force against the rotation of the hardware.

Furthermore, in the anti-rotation hardware structure according to the present invention, a second through hole is formed in the second panel and a second key protrusion is formed at the other end of the nut hardware, and in addition, a welding protrusion is formed at the other end of the nut hardware. Since the other end of the nut hardware is laser welded to the second panel, there is an advantage that the rotation of the nut hardware can be further blocked.

As a result, the present invention is configured such that the rotation of the nut hardware is blocked as described above, so that the nut hardware is firmly fixed to the first panel even in the process of rotating the bolt member to the nut hardware, the first panel as the bolt member. It has the final effect of assembling the assembly firmly.

1 is a view showing that the nut hardware and the second panel are sequentially welded to the first panel according to the prior art, and then the assembly is assembled to the first panel using a bolt member.
2 is a view showing that the first and second panels of various shapes are welded and coupled.
3 is a view showing that after the bolt member is inserted into the nut hardware, the nut hardware is welded and separated from the first panel so that the bolt member and the nut hardware rotate together.
4 is a view showing a key assembly structure of the anti-rotation hardware structure according to the present invention.
5 is a view showing that the nut hardware of FIG. 4 is separated from the first panel by welding, and the first key projection of the key assembly structure is removed from the first key groove.
6 is a view showing that the support is formed on the first panel to support the other end of the nut hardware of FIG.
7 is a view showing that the second through hole is formed in the support of FIG. 6.
8 is a view showing that the non-slip pad is attached to the support of FIG. 6 or the support of FIG. 7.
9 is a view showing that a second key groove is formed in the support portion of FIG. 7 and a second key protrusion is formed in the nut hardware as an additional configuration of the key assembly structure.
10 is a view showing that the welding projection is formed on the nut hardware of FIG. 9 and the nut hardware is welded to the support of the second panel.
11 and 12 is a view showing the anti-rotation hardware structure according to another aspect of the present invention.

Hereinafter, it will be described in detail through exemplary drawings of the present invention. Note that when adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

1 is a view showing that the nut hardware and the second panel are sequentially welded to the first panel according to the prior art, and then the assembly is assembled to the first panel with a bolt member, and FIG. 2 is a first panel of various shapes The second panel and the second panel are welded together, and FIG. 3 is a view showing that after the bolt member is inserted into the nut hardware, the nut hardware is welded and separated from the first panel so that the bolt member and the nut hardware rotate together.

Referring to Figure 1, the first panel 110, the one end of the nut hardware 200 (top portion in the drawing) is welded, specifically, the welding projection W of the nut hardware 200 is projected or It is welded by melting and pasted by laser welding.

Thereafter, a second panel 120 is welded and coupled to the lower surface of the first panel 110, wherein the nut hardware 200 is formed by welding coupling between the first panel 110 and the second panel 120. It is placed in the closed section.

Next, the assembly (A) is placed on the upper surface of the first panel 110, the bolt member (B) through the assembly hole of the assembly (A) and the first through hole (110a) of the first panel (110) ) Is inserted into the nut hole 200a of the nut hardware 200, so that the assembly A is assembled to the first panel 110.

For reference, as illustrated in FIG. 2, the first panel 110 and the second panel 120 welded to each other may be taken in various shapes according to portions applied to the vehicle body.

By the way, as described above, the nut hardware 200 welded to the first panel 110 may weaken the welding portion with the first panel 110, thereby causing welding separation in which the welded portion is separated. At this time, the welding separation means that the welded part is separated in the present specification.

In this case, since the nut hardware 200 is disposed in the closed section, as it is difficult to re-weld the nut hardware 200 to the first panel 110 again, the assembly A is the first panel 110 There are limitations that cannot be maintained in a firmly assembled state.

Furthermore, in the process in which the bolt member (B) is inserted into the nut hardware 200, welding separation occurs from the nut panel 200 from the first panel 110 by the rotational force of the bolt member (B). As shown in Figure 3, even if the bolt member (B) in the pre-fastened state to the nut hardware 200, even if the bolt member (B) is rotated to be released again to be pulled out from the nut hardware 200, the nut hardware (200) As the bolt member B rotates together, a problem occurs that the bolt member B does not loosen from the nut hardware 200.

Accordingly, the present invention, in order to overcome these limitations and problems, as shown in FIGS. 4 to 10, to prevent rotation of the nut hardware 200 welded to the first panel 110, nut hardware ( A key assembly structure K assembled to each other may be formed at one end of the 200) and the first panel 110.

Specifically, the anti-rotation hardware structure according to the present invention includes a panel body 100 and a nut hardware 200.

Here, the panel body 100 is provided with a first panel 110 and a second panel 120, the second panel 120 is to form a closed space between the first panel 110 It is coupled to the first panel (110).

In addition, one end of the nut hardware 200 is welded to the first panel 110 in the closed space, and has a nut hole 200a. In this case, the nut hardware 200 can be used in any conventional nut, of course.

In addition, the first panel 110 is formed with a first through hole 110a communicating with the nut hole 200a so that a bolt member assembled to the nut hole 200a penetrates.

At this time, the key assembly structure (K) which is assembled with each other is provided at one end of the nut hardware 200 and the first panel 110 to block rotation of the nut hardware 200 welded to the first panel 110. Is formed.

Specifically, in the key assembly structure K, a first key projection 201 is formed at one end of the nut hardware 200, and a first key protrusion 201 is formed at the edge of the first through hole 110a in the first panel 110. The first key groove 110b may be formed so that the key projection 201 is inserted. At this time, in order to achieve a sturdy key assembly structure (K), it is preferable that the first key projection (201) has a cross-sectional cross-section and a corresponding first key groove (110b).

Thus, the key assembly structure (K) having the first key groove (110b) and the first key projection (201) is formed, so that the bolt member is inserted into the nut hardware (200), and the nut hardware is rotated by the bolt member during rotation. The phenomenon in which the 200 is separated does not occur.

In other words, the welding force of the nut hardware 200 welded to the first panel 110 is inserted into the nut hole 200a of the nut hardware 200 while the bolt member is rotated to fasten the rotational force of the bolt member. The nut hardware 200 may be separated from the first panel 110 by the first key groove 110b and the first key projection 201 which are the key assembly structure K according to the present invention. Can be.

In other words, when the bolt member rotates in the nut hole 200a of the nut hardware 200 and attempts to rotate the nut hardware 200 together by a friction force, the first key projection inserted into the first key groove 110b ( Since the rotation of the nut hardware 200 is also blocked because 201) cannot be rotated because it is blocked by the rim of the first key groove 110b, the nut hardware 200 is welded to the first panel 110 while The bolt member may be fully engaged with the nut hardware 200, and as a result, the assembly may eventually be firmly assembled to the first panel 110.

In addition to this, according to the present invention, as shown in FIG. 6, the support 121 may be formed to support the other end (lower end in the drawing) of the nut hardware 200 on the second panel 120.

If the second panel 120 is spaced apart from the lower end of the nut hardware 200, as shown in FIGS. 3 and 4, the first panel 110 and the welding portion of the nut hardware 200 are weakened, so that the first When the nut hardware 200 is partially or completely separated from the panel 110 by welding, the first key protrusion 201 of the nut hardware 200 is removed as the nut hardware 200 descends as illustrated in FIG. 5. 1 As the key is removed from the first key groove 110b of the panel 110, the key assembly structure K rotates and cuts off the nut hardware 200 in fastening the bolt member into the nut hardware 200. You can't do everything.

In other words, when the lower end of the nut hardware 200 does not contact the second panel 120 and has a structure having space below the nut hardware 200, the nut hardware 200 is welded and separated from the first panel 110. At the time, as the nut hardware 200 descends by its own weight, as the first key projection 201 at the upper end of the nut hardware 200 moves out of the first key groove 110b of the first panel 110, the nut hardware 200 ) Cannot be implemented.

In order to block the rotation of the nut hardware 200 in this case, the present invention may be formed with a support 121 supporting the lower end of the nut hardware 200 on the second panel 120 as shown in FIG. 6. have.

The support part 121 has a structure that supports the lower end of the nut hardware 200, thereby preventing the nut hardware 200 from falling even if the nut hardware 200 is separated from the first panel 110 by welding. , As the first key projection 201 of the nut hardware 200 does not come out from the first key groove 110b of the first panel 110, the bolt member is completely rotated to the nut hardware 200 to assemble the assembly. It can be firmly assembled to the first panel (110).

At this time, the support part 121 is a part of the second panel 120, as an example, as shown in the figure, the part of the second panel 120 corresponding to the lower side of the nut hardware 200 is the nut hardware 200 It can take the height that is arranged at the lower end of the, furthermore, so that the nut hardware 200 does not fall when falling off the first panel 110 when welding separated from the first panel 110, the lower end of the nut hardware 200 Note, it is only necessary to have a structure, and the specific shape and structure are not limited by the present invention.

In addition to this, according to the present invention, as shown in FIG. 7, a second through hole 121a is formed in the support portion 121 of the second panel 120, wherein the second through hole 121a is a nut hole 200a ).

Accordingly, the present invention can also correspond to various length structures of the bolt member that is inserted into the nut hardware 200.

That is, the length of the bolt member is longer than the length of the nut hole (200a) of the nut hardware 200, the bolt member passes through the nut hole (200a) when inserted into the nut hole (200a), the lower end of the nut hole (200a) Even if it goes beyond, it is not blocked by the second panel 120 as it can go through the second through hole 121a.

In other words, since the second through hole 121a communicating with the nut hole 200a is formed in the second panel 120, the bolt member is not blocked by the second panel 120 even when the length of the bolt member is long. As the bolt member is completely tightened to the nut hardware 200, it is possible to take a structure that completely presses the assembly against the first panel 110, so that the assembly is the first even if a bolt member of any length structure is used. It can be assembled to the panel 110 firmly.

Furthermore, although the present invention is not shown in the drawings, it may further include a clamp bolt.

The clamp bolt is inserted into the nut hole 200a while penetrating through the second through hole 121a, thereby fixing the nut hardware 200 to the second panel 120, and thereby by the bolt member. The nut hardware 200 serves to block rotation.

At this time, when the clamp bolt is assembled to the nut hole 200a, a part of the nut hole 200a is inserted into the lower part of the nut hole 200a, for example, so that a bolt member is inserted into the remaining part of the nut hole 200a. It is possible to assemble the assembly to the first panel 110.

To this end, the clamp bolt is preferably a bolt having a short length of the shaft portion (the portion where the screw line is formed) excluding the head portion.

In addition, the support portion 121, while supporting the other end of the nut hardware 200 to block the rotation of the nut hardware 200, as shown in Figure 8, the anti-skid pad 300 is attached or anti-skid coating Can be formed.

When the first joint 110 and the weld joint of the nut hardware 200 welded to the first panel 110 and the first projection are weak, the nut hardware 200 is supported even if it is supported by the support 121 of the second panel 120. As it can be rotated by sliding on the upper surface of 121, it can be rotated eventually.

In order to block rotation of the nut hardware 200 in this case, the present invention takes a structure in which the non-slip pad 300 is attached to a surface where the lower end of the nut hardware 200 contacts the support portion 121. As another example, the anti-slip coating may be formed.

In the anti-skid pad 300 or the non-slip coating portion, the surface in contact with the lower end of the nut hardware 200 has a high frictional characteristic, so the nut hardware 200 is supported while supporting the lower end of the nut hardware 200. It serves to prevent rotation as much as possible.

In addition, noise may be prevented from occurring due to friction with the support part 121 when the nut hardware 200 is rotated.

As an example, the anti-skid pad 300 may be made of a rubber material, and the anti-skid coating portion may be made of silicone material, and further, the anti-skid pad 300 and the anti-skid coating portion rotates at the lower end of the nut hardware 200 Of course, any material that can prevent as much as possible and reduce friction noise is not limited by the present invention, and any conventional material can be used.

On the other hand, the present invention is a key assembly structure (K) having a second key groove (121b) of the second panel 120 and a second key projection (202) of the other end of the nut hardware 200 (lower side on the drawing). ) May be additionally provided.

Specifically, as illustrated in FIG. 9, a second key groove 121b is formed on the second panel 120 at the edge of the second through hole 121a, and the second key groove 121b is provided at the other end of the nut hardware 200. A key assembly structure K having a second key protrusion 202 inserted into the key groove 121b may be formed.

The second key groove 121b and the second key projection 202 may be implemented by further reinforcing the rotational blocking of the nut hardware 200 which is the roles of the first key groove 110b and the first key projection 201 described above. have.

In addition, as illustrated in FIG. 10, a welding protrusion line L is formed at the other end (lower end in the drawing) of the nut hardware 200, so that the other end of the nut hardware 200 is second in the closed space. The panel 120 may have a laser-welded structure.

This welding protrusion line (L), by increasing the fixing force of the nut hardware 200 to the panel, such as a welding projection (W) formed on the upper end of the nut hardware 200, further suppress the rotation of the nut hardware (200) Accordingly, the assembly can be more firmly assembled to the first panel 110 in the end.

As a result, the anti-rotation hardware structure according to the present invention, the key assembly structure (K) is formed on one end of the nut hardware 200 and the first panel 110, the nut welded to the first panel 110 The rotation of the hardware 200 may be blocked.

In addition, the anti-rotation hardware structure according to the present invention, the second panel 120 is configured by a support portion 121 for supporting the other end of the nut hardware 200, thereby preventing the rotation of the nut hardware 200 while the nut hardware It is possible to prevent the first key projection 201 of the 200 from falling out of the first key groove 110b of the first panel 110.

In addition, the anti-rotation hardware structure according to the present invention, the anti-skid pad 300 or anti-slip coating portion is configured on the support portion 121, thereby further blocking rotation of the nut hardware 200.

In addition, in the anti-rotation hardware structure according to the present invention, a second through hole 121a is formed in the support part 121, and a clamp bolt fastened to the second through hole 121a is configured, so that the nut hardware 200 is formed. It is fixed to the second panel 120 even more firmly, it is possible to reinforce the blocking force against the rotation of the nut hardware (200).

Furthermore, in the anti-rotation hardware structure according to the present invention, the second through hole 121a is formed in the second panel 120 and the second key projection 202 is formed at the other end of the nut hardware 200, thereby In addition, a welding protrusion line L is formed at the other end of the nut hardware 200, so that the other end of the nut hardware 200 is laser welded to the second panel 120, thereby further blocking rotation of the nut hardware 200. have.

Ultimately, the present invention is configured such that rotation of the nut hardware 200 is blocked as described above, so that the nut hardware 200 is provided on the first panel 110 even in the process of rotating the bolt member to the nut hardware 200. As it is firmly fixed, the assembly can be firmly assembled to the first panel 110 with the bolt member.

Meanwhile, in the anti-rotation hardware structure according to another aspect of the present invention, as shown in FIGS. 11 and 12, the bolt hardware 800 is welded to the first panel 110, and the first panel 110 And it is possible to take the key assembly structure (K) to the bolt hardware (800).

Specifically, the present invention includes the panel body 100 and the bolt hardware 800.

Here, the panel body 100 may include a first panel 110 and a second panel 120.

At this time, the second panel 120 is coupled to the first panel 110 to form a closed space between the first panel 110.

In addition, the bolt hardware 800 may include a head portion 810 and a shaft portion 820.

Here, the head portion 810 is welded to the first panel 110 outside the closed space. As an example, the head portion 810 may have a welding projection W formed on a lower surface thereof, and may be welded to the first panel 110 by projection welding or laser welding.

In addition, the shaft portion 820 has a screw line 821 through which the nut member N is screwed so that the nut member N presses and assembles the assembly A to the second panel 120 outside the closed space. Is formed.

In addition, a first through hole 110a is formed in the first panel 110 and a second through hole 121a is formed in the second panel 120 so that the shaft portion 820 of the bolt hardware 800 penetrates. Is formed.

At this time, the key assembly structure assembled to each other in the head 810 and the first panel 110 of the bolt hardware 800 to block rotation of the bolt hardware 800 welded to the first panel 110 ( K) is formed.

Specifically, the key assembly structure (K) is a first key projection is formed on the head portion 810 of the bolt hardware 800, the first in the first panel 110 to the edge of the first through hole (110a) The first key groove 110b into which the key projection 801 is inserted may be formed. At this time, in order to achieve a sturdy key assembly structure (K), the first key projection (801) is preferably a first key groove (110b) also takes a angular structure so that the cross section has a rectangular structure.

In this way, the key assembly structure K having the first key groove 110b and the first key protrusion 801 is formed, so that the nut member N is screwed into the bolt hardware 800 while the nut member N The phenomenon that the bolt hardware 800 is separated by the rotational force does not occur.

That is, in the process in which the welding portion of the bolt hardware 800 welded to the first panel 110 is fastened while the nut member N is rotated on the screw line 821 of the bolt hardware 800, the nut member The bolt hardware 800 may be separated from the first panel 110 by the rotational force of (N), the first keyway 110b and the first key projection 801 which are the key assembly structure K according to the present invention. By this it can be prevented.

In other words, when the nut member N rotates on the screw line 821 of the bolt hardware 800 while trying to rotate the bolt hardware 800 together by friction, the first inserted into the first keyway 110b. Since the rotation of the bolt hardware 800 is also blocked because the key projection 801 cannot be rotated because it is blocked by the rim of the first key groove 110b, the bolt hardware 800 is welded to the first panel 110. While maintaining the nut member (N), the bolt hardware 800 can be fully fastened, whereby the assembly (A) can be firmly assembled to the second panel 120.

For reference, the key assembly structure (K) of the above-described bolt hardware 800 is a working space that uses a tool (such as a hexagonal wrench) to fix or loosen the head portion 810 in the process of assembling and manufacturing a vehicle body. It is desirable to utilize this incapable structure or such production stage.

As described above, although the present invention has been described by a limited number of embodiments and drawings, the present invention is not limited by this, and the technical idea of the present invention and the following will be described by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equivalent scope of the claims to be described.

A: Assembly B: Bolt member
W: Welding projection K: Key assembly structure
100: panel body 110: the first panel
110a: first through hole 110b: first keyway
120: second panel 121: support
121a: second through hole 121b: second key groove
200: nut hardware 200a: nut hole
201: first key projection 202: second key projection
300: anti-skid pad L: welding protrusion line
800: bolt hardware 810: head portion
820: Shaft portion 821: Screw line
801: first key projection N: nut member

Claims (10)

A panel body having a first panel and a second panel coupled to the first panel to form a closed space between the first panel and the first panel; And a nut hardware having a nut hole through which one end is welded to the first panel in the closed space, and the bolt member is screwed so that a bolt member is assembled to the first panel outside the closed space. The first panel is formed with a first through hole communicating with the nut hole so that the bolt member penetrates, and one end of the nut hardware is configured to block rotation of the nut hardware welded to the first panel. A key assembly structure that is assembled with each other is formed on the first panel and the first panel,
In the key assembly structure, a first key projection is formed at one end of the nut hardware, and a first key groove is formed in the first panel to be inserted into the edge of the first through hole in the first panel,
The second panel, the support portion is formed to support the other end of the nut hardware,
A second through hole communicating with the nut hole is formed in the support portion of the second panel,
The bolt member is inserted into one side of the nut hole and fastened to the nut hole,
It further includes a clamp bolt that is inserted into the other side of the nut hole and fastened to the nut hole while penetrating the second through hole to fix the nut hardware to the second panel to block rotation of the nut hardware.
The clamp bolt,
The bolt member is inserted into the remaining portion where the bolt member is not fastened in the nut hole so that the assembly is assembled to the first panel,
The support part supports the other end of the nut hardware and blocks the rotation of the nut hardware, so that an anti-skid pad is attached or an anti-skid coating part is formed, and the anti-skid pad and non-slip coating part are made of rubber or silicone material. Lose,
In the second panel, a second key groove is formed at the edge of the second through hole, and a key assembly structure in which a second key projection is inserted into the second key groove at the other end of the nut hardware is further configured,
An anti-rotation hardware structure characterized in that a welding protrusion line is formed at the other end of the nut hardware, and the other end of the nut hardware is laser welded to the second panel in the closed space.
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