KR101550977B1 - Plug for disassembling easily - Google Patents

Abstract

The present invention relates to a plug which can be easily disassembled, and more particularly, to a plug for assembling various interior and exterior parts and components of an automobile, which is made into a one piece structure before assembling and separated into two pieces after assembly, The present invention relates to a plug that is easily disassembled so that it can be easily separated during a disassembly operation for a vehicle.
That is, according to the present invention, since the pin and the grommet are kept in a one-piece structure before the assembly, the number of molding steps and cost can be reduced by integrally molding the pin and the grommet during injection molding, In particular, even if the fins and the grommet are separated and assembled from each other, the structure for pulling the grommet while the pins are lifted in the releasing operation for maintenance or recycling can be obtained by separating the grommet from the two- So that disassembly work for maintenance and recycling can be performed very smoothly.

Description

Plug for disassembling easily "

The present invention relates to a plug which can be easily disassembled, and more particularly, to a plug for assembling various interior and exterior parts and components of an automobile, which is made into a one piece structure before assembling and separated into two pieces after assembly, The present invention relates to a plug that is easily disassembled so that it can be easily separated during a disassembly operation for a vehicle.

In general, internal and external parts (rudder side trim, transverse trim, etc.) of an automobile are closely assembled to adjacent body panels or trims, and plastic fasteners of various structures (for example, Hereinafter, the term "plug" is mainly used.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram illustrating a conventional one piece plug.

1, the conventional one-piece plastic plug has a structure in which a head portion and a stick portion are molded integrally with each other like a screw, and a plurality of fastening portions are formed on the outer diameter portion of the stick portion 2, (3) are integrally formed at equal intervals. In particular, the latching part (3) is formed in the shape of a sloped slope in the direction opposite to the insertion direction for the purpose of improving the fastening force.

Therefore, when the stick portion 2 is inserted and inserted through the inner and outer parts, the engagement portion 3 in the form of a hat is caught by the inner diameter portion of the panel or the trim, and at the same time, So that the assembling and fixing of the inner and outer parts with respect to a specific panel or trim is achieved.

However, when the one-piece plug is dismantled, the space for the tool to be inserted is insufficient and the tool 40 can be accessed only through the clearance of the outer portion of the head portion 1, so that the breakage of the head portion frequently occurs .

That is, since the conventional one-piece plug has a structure in which the engagement portion formed on the stick portion is in the shape of a lug and stays in a strong adhesion supporting force by being caught by the panel or the trim, the engagement portion of the stick portion is broken by the force, And the peripheral parts such as the panel, the trim and the like are damaged and damaged, and the maintenance cost is further increased.

2 is a schematic view showing a conventional two piece type plug.

2, the conventional two-piece plastic plug has a grommet 4, which is first fastened to the corresponding internal and external parts and the panel, and a grommet 4 inserted into the inner diameter portion of the grommet 4 to expand And a pin 5 for ensuring the robustness of assembly.

More specifically, the grommet (4) has a hollow structure in which a female thread is formed on an inner diameter portion of the grommet, and the lower end of the grommet has a hooking structure. The pin (5) The grommet is first fastened to the inner and outer member parts and the panel first, the pin is screwed to the inner diameter portion of the grommet at the second time, and the grommet is expanded in the outer diameter direction. Thus, .

However, the conventional two-piece plug has a disadvantage in that threads are formed in the fins and the grommet, and disassembly is difficult during assembly.

That is, in the case of disassembly, a screwdriver must be inserted into a driver groove formed in the head portion of the pin, and the driver groove is crushed during disposal of the scrap car or maintenance, and disassembly becomes impossible frequently.

Further, there is a problem that the number of molding steps and the cost are increased due to injection molding of the grommet and the fin separately.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a method of manufacturing a mold having an integrated one- piece structure in which a pin and a grommet are integrally held until assembly, And the pin and the grommet are separated from each other by a two-piece structure after the assembly, so that it is possible to increase the fastening force according to the two-piece structure.

Another object of the present invention is to provide a grommet with a structure in which the pin is raised while pulling the pin and the grommet together so as to smoothly perform disassembly for maintenance and recycling There is one point.

According to a first aspect of the present invention, there is provided a method of manufacturing an electronic device, comprising: a first head having a hollow insertion port; a first stick integrally formed on a bottom surface of the first head; A grommet including a catch; A second stick portion that is lockably inserted into the inner diameter portion of the grommet; and a second head portion integrally formed on an upper surface of the first stick portion; Locking means for locking the pin in the grommet when the pin is inserted into the grommet; Wherein the grommet and the pin are formed by integrally injection-molding an inlet of the hollow insertion port of the first head portion and a lower end of the second stick portion to hold the dress until assembly, and the pin is press- Wherein the plug is detached and locked by a locking means.

According to a preferred embodiment of the present invention, the locking means comprises: a slot penetrating right and left to the first stick portion; A locking protrusion integrally formed on the lower end of the slot; And is locked at the bottom of the lock jaw while being raised and lowered along the slot, is unlocked when the lock jaw is raised above the lock jaw, and is engaged with the upper end of the slot to provide the state of the fins to the grommet Hanging jaw; .

Preferably, a space for providing an elastic force for shrinking and expanding the second stick portion is formed through the lower end portions of both side surfaces orthogonal to the stopping jaw of the second stick portion.

More preferably, the upper end portions of both side surfaces perpendicular to the engaging jaws of the second stick portion are formed as pressing ends that protrude further outward than the lower end portion.

Also, the pressing end is formed with a guide groove in the vertical direction so that a guide protrusion protruding from the inner diameter surface of the hollow insertion hole of the first head portion is inserted.

Preferably, the center portion of the top surface of the first head portion is formed as a first plane, and the outer circumferential portion is formed as an inclined surface inclined in the outer diameter direction, and the bottom surface of the second head portion is formed as a second plane, And a tool insertion space is formed between the second plane and the inclined surface when the two planes are in close contact with each other.

Through the above-mentioned means for solving the problems, the present invention provides the following effects.

First, by keeping the one-piece structure of the integrated pin and grommet before assembly, it is possible to reduce the number of molding steps and cost by integrally molding the pin and grommet during injection molding.

Second, since the pin and the grommet are separated from each other by the two-piece structure after the assembly, the fastening force of the internal and external parts can be increased according to the two-piece structure.

Third, the disassembly of the plug can be improved.

That is, after the pins are lifted by using a tool to dismantle the grommet, the grommet is lifted by the pulling force of the pin while the pin is locked in the grommet, and the grommet is released secondarily. The disassembly of the plug can be easily performed only by the operation of pulling the pin.

Fourthly, the conventional plug is difficult to disassemble due to breakage of the latching portion or the threaded portion. However, the plug of the present invention can disassemble the one-touch concept by using the tool, thereby preventing breakage of the head portion and the latching portion.

Figures 1 and 2 are schematic diagrams showing a conventional plug structure,
FIG. 3 is a perspective view showing a plug which can be easily disassembled according to the present invention, FIG.
FIG. 4 is a side view showing a plug which is easy to disassemble according to the present invention,
FIG. 5 is an enlarged fragmentary perspective view of a grommet of a plug easy to disassemble according to the present invention,
FIG. 6 is an enlarged perspective view of a main portion of a pin of a plug which can be easily disassembled according to the present invention, FIG.
FIG. 7 is an enlarged view showing a connection part in which a grommet and a pin of a plug, which can be easily disassembled according to the present invention,
8 is a view showing an assembling process of a plug which can be easily disassembled according to the present invention,
9 is a view showing a process of releasing a plug which can be easily disassembled according to the present invention.

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

The present invention is to provide a plastic fastener, that is, a plug, which is easy to disassemble, which is separated into two pieces after assembling, while maintaining one piece before assembling to satisfy the following requirements.

1) It is easy to dismantle hardware at the scrapping stage in order to increase the recycling rate (including recycling rate is easy to disassemble, including the reusable ratio without damaging parts / fasteners) by strengthening environmental regulations (EU recycling type approval, etc.) What to do,

2) In order to improve the reuse / recycle / remanufacture of components in the process of disposal, the disassembly process should be considered in the previous dismantling process. Especially, the hardware connecting reusable / recycled / What should be applied,

3) In order to replace the parts without damage during maintenance or repair, the hardware must be designed to be easy to disassemble, to save maintenance time and cost, to prevent damage of parts / fasteners, However,

4) Consider the ease of assembly of hardware considering a large number of assembly operations in-line.

To this end, the present invention provides a plug having a new structure in which a separate tool insertion hole is formed in the head portion, and a plurality of rectangular plate-like engaging portions are integrally formed along the longitudinal direction at the outer diameter of the stick portion integrally formed on the bottom surface of the head portion So that the assembling force of the inner and outer parts can be maintained firmly and the dismantling work for maintenance and recycling can be performed very smoothly.

3 to 7, the plug of the present invention includes a grommet 100 that is firstly inserted into a component to be assembled first, and a grommet 100 which is inserted into the inner diameter portion of the grommet 100 at a secondary position, As shown in FIG.

5, the grommet 100 includes a first head portion 110 having a hollow insertion port 112, a first stick portion 120 formed integrally on the bottom surface of the first head portion 110, And a plurality of engaging portions 130 integrally formed on the outer surface of the first stick portion 120.

At this time, a guide protrusion 114 for guiding the straight direction is integrally formed on the inner diameter surface of the hollow insertion port 112 of the first head part 110 when the following pin 200 is inserted.

In addition, the latching part 130 is composed of a wing-shaped wing integrally formed on both sides of the first sticking part 120.

The pin 200 includes a second stick portion 220 that is lockably inserted into the inner diameter portion of the grommet 100 and a second head portion 210 that is integrally formed on the upper surface of the first stick portion 110 The fin 200 is maintained in a one-piece form injection-molded integrally with the grommet 100 until the fin 200 is inserted into the grommet 100.

6 and 7, the inlet of the hollow insertion port 112 of the first head portion 110 of the grommet 100 and the lower end of the second stick portion 220 of the pin 200, The grommet 100 and the fin 200 are held until the assembly is completed and the pin 200 is press-fitted into the inner diameter portion of the grommet 100 during assembly, Separated.

Particularly, when the pin 200 is inserted into the grommet 100, the pin 200 is locked in the grommet 100 by the locking means.

Here, the locking means is formed over the contact surface between the grommet and the pin, and a detailed configuration thereof will be described below.

5, the first stick portion 120 of the grommet 100 is formed with a slot 122 which is elongated in the vertical direction and penetrates to the left and right, and a lower end portion A pair of lock jaws 124 are integrally protruded and the upper end of the slot 122 is not completely separated when the pin is detached as described later but is engaged with the pin.

6, a locking protrusion 222 is integrally protruded from both ends of the second stick portion 220 of the pin 200. As shown in FIG.

When the second stick portion 220 of the pin 200 is inserted through the hollow insertion port 112 formed in the first head portion 110 of the grommet 100, The assembly of the pin 200 to the grommet 100 is locked by locking the locking tab 124 at the bottom of the locking tab 124 beyond the locking tab 124 at the bottom of the slot 122, Is completed.

On the other hand, when the pin 200 is pulled out to disassemble, the latching jaw 222 of the second stick portion 220 is moved beyond the lock jaw 124 to reach the lock jaw 124, And is held in the upper end of the slot 122 to maintain the assembled state.

On the other hand, on the both sides of the second stick portion 220 of the pin 200, that is, the lower end portions of both sides orthogonal to the engaging protrusion 222, a resilient force providing space 224 for contraction and expansion of the second stick portion 220, Respectively.

Particularly, the upper ends of both side surfaces perpendicular to the engaging protrusions 222 of the second stick 220 protrude outwardly in comparison with the lower end of the grommet 100 when the pin 200 is inserted into the grommet 100, And a pressing end 226 which serves to expand the outer circumferential surface of the valve body 22 in the radial direction.

Preferably, the pressing end 224 is formed with a guide groove 228 that is elongated in the vertical direction so that the guide protrusion 114 protruding from the inner diameter surface of the hollow insertion hole 112 of the first head portion 110 is inserted, The guide protrusion 114 and the guide groove 228 are matched when the pin 200 is inserted into the grommet 100 so that the insertion direction of the pin 200 can be constantly guided.

When a pin 200 is inserted into the grommet 100 and then the pin 200 is separated for maintenance or recycling, a tool (for example, a flat screwdriver) is used. It is necessary to have a space that can hold the end of the body like a lever.

The center of the upper surface of the first head part 110 is formed as a first plane 116 and the outer part of the first head part 110 is formed as an inclined surface 118 inclined in an outer diameter direction. When the second plane 212 of the second head portion 210 is in close contact with the first plane 116 of the first head portion 110 and the second plane 212 of the second head portion 210 is in contact with the second plane 212, 212) and the inclined surface (118).

Hereinafter, the assembling process of the plug according to the present invention will be described with reference to FIG.

First, the grommet 100 is firstly inserted into the interior and exterior parts of the object to be assembled, and the engagement part 130 formed on the first stick part 120 of the grommet 100 is attached to the panel or trim bottom part So that it is fastened.

At this time, the inlet of the hollow insertion port 112 of the first head 110 of the grommet 100 and the lower end of the second stick 220 of the pin 200 are integrally connected to each other, The grommet 100 and the pin 200 maintain a one-piece state.

When the second head portion 210 of the pin 200 is pressed, a part where the pin and the grommet are integrally connected is broken, and at the same time, the second stick portion 220 of the pin 200 is inserted into the grommet 100 The guide groove 228 of the pin 200 and the guide protrusion 114 of the grommet 100 are matched with each other so that the inserting direction of the pin 200 is Always constantly guided.

Thus, the locking protrusion 222 of the second stick portion 220 is locked along the slot 122 while being locked at the bottom of the locking protrusion 124 beyond the locking protrusion 124 at the lower end of the slot 122 The pressing end 226 of the second stick portion 220 expands the first stick portion 120 of the grommet 100 in the outer diameter direction so that the engaging portion 130 formed on the outer diameter of the first stick portion 120, Is completely in close contact with the bottom of the panel or trim and is thus engaged, thus completing the assembly of the fin 200 with respect to the grommet 100.

Hereinafter, the disassembling process of the plug according to the present invention will be described with reference to FIG.

A tip of a tool (for example, a flat screwdriver) is inserted into a tool insertion space 214 formed between the first head portion 110 of the grommet 100 and the second head portion 210 of the pin 200, He puts in his wealth and lifts it up like a lever.

When the pin 200 is pulled up to dismount the locking pin 124, the locking protrusion 222 of the second stick portion 220 is moved upward beyond the locking pin 124 to be unlocked, So that the fins 200 are maintained in a state of being assembled with respect to the grommet 100. As a result,

When the pin 200 pulled upward is pulled and held, the latching jaw 222 is hooked on the upper end of the slot 122, so that the grommet 100 is pulled upward by the pulling force of the pin 200 It is easily separated.

In this way, after the pins are lifted by using a tool to dismantle the grommet, the grommet is lifted up by the force of pulling the pin while the pin remains in the grommet state and is released secondarily, And disassembly of the plug can be easily performed only by pulling the pin.

100: grommet 110: first head part
112: hollow insertion hole 114: guide projection
116: first plane 118: sloped surface
120: first stick portion 122: slot
124: locking jaw 130:
200: pin 210: second head part
212: second plane 214: tool insertion space
220: second stick portion 222:
224: elastic force providing space 226: pressure end
228: Guide groove

Claims (6)

A first head portion 110 having a hollow insertion port 112 and a first stick portion 120 integrally formed on a bottom surface of the first head portion 110. The first stick portion 120 is formed on the outer surface of the first stick portion 120, A grommet (100) including a plurality of integrally formed engaging portions (130);
A second stick portion 220 which is inserted into the grommet 100 via a hollow insertion hole 112 so as to be lockably inserted therein and a second head portion 220 integrally formed on the upper surface of the second stick portion 220, (200) including a pin (210);
Locking means for locking the pin (200) in the grommet (100) when the pin (200) is inserted therethrough through the hollow insertion port (112) of the grommet (100);
Respectively,
The grommet 100 and the pin 200 are injection-molded integrally with the inlet of the hollow insertion port 112 of the first head part 110 and the lower end of the second stick part 220, When the pin 200 is assembled, the pin 200 is inserted into the inner diameter portion of the grommet 100 to be separated into two pieces, and at the same time,
Said locking means comprising:
A slot 122 penetrating through the first stick portion 120 to the left and right;
A locking protrusion 124 integrally protruding from the lower end of the slot 122;
And is integrally formed at the lower ends of both sides of the second stick portion 220 so as to be locked on the bottom of the lock jaw 124 while being raised and lowered along the slot 122, (222) which engages with the upper end of the grommet (122) and provides a state of assembling of the pin (200) to the grommet (100);
Wherein the plug is easily detachable.
delete The method according to claim 1,
And a resilient force providing space 224 for contraction and expansion of the second stick portion 220 is formed through the lower end portions of both sides of the second stick portion 220 which are orthogonal to the engagement protrusion 222. [ One plug.
The method according to claim 1,
Wherein an upper end of both side surfaces orthogonal to the engagement protrusions (222) of the second stick portion (220) is formed as a pressing end (226) that protrudes further outward than the lower end portion.
The method of claim 4,
And a guide groove 228 is formed in the pressing end 226 so that the guide protrusion 114 protruding from the inner diameter surface of the hollow insertion hole 112 of the first head part 110 is inserted. One plug.
The method according to claim 1,
The center of the upper surface of the first head part 110 is formed as a first plane 116 and the outer periphery of the first head part 110 is formed as an inclined surface 118 inclined in an outer diameter direction. And a tool insertion space 214 is formed between the second plane 212 and the inclined surface 118 when the first plane 116 and the second plane 212 are in close contact with each other. Which is easy to disassemble.

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