KR102041086B1

KR102041086B1 - Boss having self hook

Info

Publication number: KR102041086B1
Application number: KR1020130078470A
Authority: KR
Inventors: 서태원
Original assignee: 현대모비스 주식회사
Priority date: 2013-07-04
Filing date: 2013-07-04
Publication date: 2019-11-06
Also published as: KR20150005125A

Abstract

The present invention relates to a boss having a self-hook, the boss having a self-hook formed in the second component to be coupled to the hole formed in the first component, in order to join the two components, one side of the second component A boss formed to protrude from and coupled through the hole; And a hook protruding from the side surface of the boss to press the area of the surface opposite to the contact surface of the first component to be in close contact with the second component. Accordingly, even in a narrow work space, two different parts may be brought into close contact with each other to allow fusion.

Description

Boss having self hook}

The present invention relates to a boss with a self hook. More specifically, the present invention relates to a boss having a self-hook which allows fusion by contacting two parts without using fixtures such as jigs in the process of joining two parts to make one part.

In order to complete a part having a predetermined shape among the parts constituting the automobile, one part is often manufactured in a state where parts of the parts overlap each other. At this time, the overlapped portions are joined by applying heat or pressure.

1 and 2, two different parts 10 and 11 of an automobile may be joined to form one part. In joining two different parts 10 and 11, there are various methods such as tapping screws, but in recent years, a heat fusion process is increasingly used for weight reduction and cost reduction.

In the heat fusion process, as shown in FIG. 2, a hole is formed in one, and the boss 10a is coupled to the hole in the other to assemble two different parts 10 and 11. Before hot welding, the two parts may be provided with a self hook 50 in order to close the two parts.

In addition, as shown in FIG. 3, two different parts 10 and 11 are tightly fixed by using a clamp or a jig 60, and then a tip of the boss 10a is formed by using a separate heat fusion mechanism. Dissolve by applying ultrasonic or heat. Accordingly, the tip of the boss 10a is deformed into the shape as shown in B of FIG. 2, so that two different parts 10 and 11 are joined and assembled.

The related art is related to the 'thermal welding device' of Republic of Korea Patent No. 10-1192577.

The heat welding apparatus, as shown in Figure 4, the jig 20, the components 10, 11 constituting the door trim is seated, and performing the heat welding operation to join the components (10, 11) The technique for joining the parts 10 and 11 using the heat fusion tool 30 is described.

As described above, as the heat fusion process proceeds, the two different parts 10 and 11 require close contact until the fusion is completed. For this purpose, two different parts are in close contact with the jig, but in the case of the jig, the use of the jig is restricted. In addition, there is a problem in that the time and cost increase according to the addition of the process because there is a need for more close contact using the jig.

In order to solve this problem, a tapping screw may be used in a narrow space, but it is difficult to solve a problem in which weight and cost increase due to the use of the tapping screw.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention to provide a boss having a self-hook capable of thermally bonding two different parts in a narrow working space without a separate fixing mechanism. It is done.

According to the present invention, in order to join the two parts, a boss having a self-hook formed in the second part to be coupled to a hole formed in the first part, protruding from one side of the second part A boss coupled through the hole; It is achieved by a boss having a self-hook comprising a hook protruding from the side of the boss to press a region of the surface opposite to the contact surface of the first component to be in close contact with the second component. do.

Here, the first component may include a coupling groove formed to fix the hook in an area where one end of the hook is pressed.

And, the hook is characterized in that it is formed inclined in the opposite direction of the direction in which the boss is inserted.

The first component and the second component may be fused by applying heat to the tip of the boss while the boss is coupled to the hole.

On the other hand, the boss may further include a fat groove formed on one side of the lower.

In addition, the first component may further include a filling part formed at an edge of the hole of the surface on which the coupling groove is formed so as to prevent the melt formed by the heat applied to the tip of the boss from invading the fat loss groove.

The boss having a self-hook according to an embodiment of the present invention having the configuration as described above allows two different parts to be in close contact with each other even in a narrow work space. Accordingly, the quality of the two different parts can be improved by preventing the joints and the step caused by the gap after joining in advance.

In addition, since the temporary assembly can be performed without using a jig before welding, assembling convenience can be ensured.

In addition, since the pressing process of the jig is not required during welding, the cycle time and the cost of equipment investment are reduced.

1 is a perspective view and a partially enlarged view showing a coupling between two parts of a conventional vehicle,
2 is a view showing a cross section of the AA line of FIG.
3 is a view showing a concept of closely contacting two parts using a jig,
4 is a view showing a conventional heat welding apparatus,
Figure 5 is a perspective view showing the coupling of the boss with a self hook according to an embodiment of the present invention,
6 is a perspective view showing a part in which a hole is formed;
7 is a view showing a coupling cross section of the boss having a self-hook according to an embodiment of the present invention before heat welding,
8 is a view showing a coupling cross section of the boss having a self-hook according to an embodiment of the present invention after thermal fusion,
9 and 10 are a perspective view and a side view showing a boss having a self-hook according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify a solution related to the technical problem of the present invention. However, in describing the present invention, when the description of related related art makes the gist of the present invention unclear, the description thereof will be omitted. In addition, parts denoted by the same reference numerals (reference numbers) throughout the specification represent the same elements.

Hereinafter, the boss 1 having a self hook according to an exemplary embodiment of the present invention will be described.

Referring to FIGS. 5 to 10, the boss 1 having a self hook according to an exemplary embodiment of the present invention may be formed in a hole 110 formed in the first component 100 to join two components. Regarding the boss having a self hook formed on the second component 200 to be coupled, the boss 1 having the self hook may include a boss 210 and a hook 220.

The hole 110 is formed in the first component 100 which is one of the different components. 5, a region of the boss 1 having the self hook is penetrated through and exposed to the hole 110.

In addition, the edge of the hole 110, as shown in Figure 6, the coupling groove 120 may be formed.

That is, the coupling groove 120 is formed on the opposite side of one side of the first component 100 in which the first component 100 and the second component 200 are in close contact, and is coupled to one end of the hook 400. Accordingly, as shown in FIGS. 5 and 6, the first component 100 may include a coupling groove 120 formed to fix a portion of the hook 220 to a region where one end of the hook 220 is pressed. have.

Accordingly, since the coupling groove 120 is coupled to the hook 220 to prevent the boss 210 from rotating arbitrarily, the heat welding tool 30 of FIG. 4 smoothly enters the boss 210 in the direction of the boss 210. Allow the fusion process to proceed.

In addition, as shown in FIGS. 7 and 8, the coupling groove 120 supports and protects the hook 220 even during the welding process by the heat welding tool 30.

The boss 210 is formed to protrude from one side of the second component 200 and is coupled to the hole 110 so that one region is exposed through the hole 110.

The hook 220 is formed to protrude from the side of the boss 210 exposed through the hole 110. In addition, the hook 220 presses a region of the side opposite to the one side of the first component 100 so that the first component 100 is in close contact with the second component 200. More specifically, the hook 220 is coupled to the coupling groove 120 to press the first component 100. Here, the hook 220 may be formed to be inclined in the opposite direction of the insertion direction of the boss 210, as shown in Figures 5 and 7, to facilitate insertion into the hole (110).

As shown in FIGS. 5 and 7, the boss 1 having the self hook has a pre-assembled state in which the first component 100 and the second component 200 are in close contact with each other by the hook 220. Becomes Then, by applying heat to the tip of the boss 210 using a heat fusion tool 30 or the like, the tip of the boss 210 is gradually collapsed according to the capacity of the heat, as shown in FIG. The component 100 and the second component 200 are joined. Here, the present invention is a heat fusion process as an example, but is not necessarily limited to this, of course, the fusion process can be performed using ultrasonic waves or the like.

On the other hand, the boss 210 may further include a weight gain groove 211 formed on one side of the lower end of the boss.

The weight loss groove 211 prevents the formation of a sink mark formed on the surface of the second part 200 after injection of the second part 200 in which the boss 1 having the self hook is formed. do.

Meanwhile, the first component 100 may further include a filling part 111 formed at an edge of the hole 110.

The filling part 111 is formed at the edge of the hole 110 of the surface on which the coupling groove 120 of the first component 100 is formed. That is, a jaw or a step is formed on the inner side of the hole 110 in the opposite direction of the direction in which the boss 210 is inserted.

As shown in FIG. 6, by applying heat to the tip of the boss 210 to the filling part 111, the melt generated as the tip is collapsed is preferentially filled, thereby invading the melt into the fat groove 211. Prevent it.

Various embodiments according to the present disclosure may solve various technical problems other than the contents mentioned in the related art as well as the related art.

The present invention has been described with reference to embodiments. However, it will be apparent to those skilled in the art that the present invention may be embodied in a modified form without departing from the essential technical spirit of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. That is, the true technical scope of the present invention is shown in the appended claims, and all differences within the equivalent scope will be construed as being included in the present invention.

1: Boss equipped with self hook 30: Heat welding tool
100: first part 110: hole
120: locking groove 200: second part
210: Boss 211: Weight Loss Home
220: hook

Claims

A boss having a self hook formed in a second part to engage a hole formed in the first part, for joining two parts,
A boss formed to protrude from one side of the second component and coupled through the hole;
A hook protruding from the side surface of the boss to press the area of the surface opposite to the contact surface of the first component to be in close contact with the second component,
The first component includes a coupling groove formed to fix the hook in an area where one end of the hook is pressed,
The first part and the second part is fused by applying heat to the tip of the boss while the boss is coupled to the hole,
The boss further includes a weight groove formed on one side of the lower,
The first part further includes a filling part formed at an edge of the hole of the face on which the coupling groove is formed, to prevent the melt formed by the heat applied to the tip of the boss from invading the fat loss groove,
The filling part boss having a self-hook, characterized in that to form the jaw or the end in the opposite direction of the insertion direction of the boss on the inner surface of the hole.

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The method of claim 1,
The hook is a boss having a self-hook, characterized in that formed inclined in the opposite direction of the direction in which the boss is inserted.

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