KR20230006626A - A Prefabricated Mounting-Bolt Unit - Google Patents

Abstract

The present invention relates to an assembled mounting-bolt unit, which can significantly improve assembly workability, comprising: a metal guide member (410) having a pair of fixing ribs (413); a metal clip member (420) having a bolt support unit (424); and a metal bolt member (430) including a bolt head (431) and a processed bolt shaft (435).

Description

Prefabricated Mounting-Bolt Unit {A Prefabricated Mounting-Bolt Unit}

The present invention relates to an assembly-type mounting-bolt unit, and more particularly, to an assembly-type mounting-bolt unit that is firmly fixed together with an attachment by inserting it into a mounting-hole drilled in an object and tightening a nut therein. it's about

In general, bolts and nuts are used to securely mount bumpers, radiator grills, interior trims, and covers in automobiles. That is, as shown in FIG. 1, the nut 1, usually made of hexagon, has a female screw hole processed in the center, and the mounting hole 3 drilled in the counterpart (2; for example, the body of a car, etc.) It is fixed through welding (4). Further, the bolt 5 is coupled to the nut 1 through the hole 7 of the mounting object 6 (for example, an accessory such as trim to be mounted on the vehicle body). Therefore, if the bolt (5) is tightened while matching the mounting hole (3) of the object (2) and the hole (7) of the attachment (6), the attachment (6) is formed by bolt (5) and nut (1). It is firmly fixed to the outside of the counterpart (2) by the tightening coupling force with.

However, in the conventional assembly structure using bolts 5 and nuts 1, the problem is that the nut 1 must be firmly fixed to the inside of the counterpart 2 in which the mounting hole 3 is drilled through welding (4), etc. there is That is, in an assembly line such as an automobile, accessories such as trims (attachments; 6) must be first fixed to the inside of a plate-shaped body (antagonist; 2) having a perforated mounting hole (3). can be installed in Accordingly, there is an inconvenience in operation of having to individually fix the nut 1 to the inside of the body of the counterpart 2 in which the mounting hole 3 is drilled by welding 4, which causes an increase in manufacturing cost. In addition, if the nut 1 is not fixed in place around the mounting hole 3 of the counterpart 2, there is a disadvantage in that the mount 6 is not fixed in the correct position.

Republic of Korea Utility Model Registration No. 20-0467331 (Utility model holder: Cho Song-nam)

The present invention is to solve these problems, and an object of the present invention is to insert it into a mounting hole drilled in the counterpart and tighten a nut thereto to be firmly fixed together with the mounting object, which can significantly improve assembly workability. It is to provide an “assembly type mounting-bolt unit”.

In addition, another object of the present invention is to maintain a solid assembly position in the process of temporarily assembling an assembly-type mounting-bolt unit by inserting it from the outside to the inside of the counterpart, thereby making it easier to assemble the mount in place. Assembly type mounting-bolt unit” is provided.

The present invention for achieving this object; In the assembly-type mounting-bolt unit for fixing the mounting object using a nut and assembled by being inserted into a rectangular mounting-hole punched in the counterpart;

The assembled mounting-bolt unit; An outward flange caught on the outer surface of the counterpart around the mounting-hole and having a square hole perforated in the center thereof in communication with the mounting-hole, and the upper and lower sides of the square hole of the outward flange are bent toward the rear, respectively, so that the mounting - A metal guide member having a pair of fixing ribs extending into the inner space of the object while in contact with the upper and lower walls of the hole; A pair of locking flanges that adhere closely to the front surfaces of the left and right sides of the outward flanges of the guide member and are bent backwards on the inside of the locking flanges to make contact with the left and right wall surfaces of the mounting-hole and the inner space of the counterpart A metal clip member having a pair of guide walls inserted into a bolt receiving space and a bolt support portion bent so that rear ends of the guide walls are connected; It consists of a square bolt head disposed to be movable back and forth in the bolt receiving space of the clip member, and a bolt shaft that is press-fitted to the center of the bolt head and has a screw thread on the outer wall so that the nut can be assembled. The upper and lower walls of the head are formed in a trapezoidal shape with a sectional thickness gradually increasing from the front to the rear, and as the nut is tightened to the tip of the bolt shaft that penetrates the object and the attachment, the object gradually comes out toward the outside of the object. a metal bolt member for fixing the fixing ribs outward to the mounting-hole; It is characterized by providing.

In addition, the present invention; The clip member is provided with a breakaway prevention rib extending in the longitudinal direction by partially cutting the center of the pair of guide walls and then bending it inward, and slides so that the breakaway prevention ribs are accommodated and disposed on the left and right side walls of the bolt head of the bolt member. A groove is formed, characterized in that the bolt member can move back and forth along the separation prevention rib while being accommodated in the bolt receiving space.

In addition, the present invention; After partially cutting the upper and lower sides of the guide walls in the clip member, it is configured to exert elastic force by bending the front end obliquely outward, and the clip member is deformed when fitting into the mounting hole to allow fitting and fitted After being restored, it is characterized in that hook pieces for preventing separation of the clip member are provided.

According to the "assembled mounting-bolt unit" according to the present invention having the above configuration; By inserting it into the mounting-hole drilled in the object and tightening the nut there, the bolt member gradually comes out and the fixing ribs of the guide member are spread outward, so that it is firmly fixed together with the object to be mounted and the assembly workability can be improved remarkably. There is an action effect. In particular, in the process of temporarily assembling the mounting-bolt unit by inserting it from the outside to the inside of the counterpart, the fixing ribs of the guide member and the guide walls of the clip member adhere to the mounting-hole, so that the temporarily assembled state is maintained and the mounted object is fixed. It has the advantage of being able to be installed in the correct position.

In addition, according to the "assembled mounting-bolt unit" according to the present invention; As the bolt member is accommodated in the bolt accommodating space and can move only forward and backward from the original position along the separation prevention rib, there is an advantage in that the attachment can be more correctly installed in the correct position.

In addition, according to the "assembled mounting-bolt unit" according to the present invention; In the process of temporarily assembling the mounting-bolt unit by being inserted into the hole, the engaging hook pieces of the clip member are deformed to allow insertion, and after being inserted, they are restored to prevent their separation, thereby maintaining the temporarily assembled state of the mounting-bolt unit.

1 is a schematic view of a mounting object coupling structure using a conventional bolt and mounting-nut.
Figure 2 is a perspective view schematically showing the assembly structure of the assembled mounting-bolt unit according to the present invention.
Figure 3 shows a mounting structure coupled through the assembly-type mounting-bolt unit according to the present invention.
Figure 4 is a perspective view showing the overall structure of the assembled mounting-bolt unit according to the present invention.
5 is an exploded perspective view of the assembled mounting-bolt unit according to the present invention.
Fig. 6 is a cross-sectional side view of the assembled mounting-bolt unit according to VI - VI of Fig. 4;
FIG. 7 is a planar cross-sectional view of the assembled mounting-bolt unit taken along line VII - VII of FIG. 4 .
8 to 10 sequentially show a mounting process of a mount using a prefabricated mounting-bolt unit according to the present invention.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. {Brief description of the accompanying drawings; Figures 2 to 7 show the structure of the assembly type mounting-bolt unit according to the present invention, and Figs. 8 to 10 show a mounting process using the assembly type mounting-bolt unit according to the present invention. In addition, in the description of the present invention, front, rear, left, right, upper, lower, front-back, longitudinal, front, rear, etc. are intended to distinguish and refer to relative positions or directions, and do not mean absolute positions or directions. not.}

<Construction description of assembly type mounting-bolt unit according to the present invention>

Referring to Figures 2 and 3; The assembled mounting-bolt unit 400 according to the present invention is temporarily assembled by being inserted into the mounting-hole 110 of the counterpart 100, and as the nut 300 is tightened from the outside of the mounting object 200, the mounting-hole It is securely fixed to (110) together with the attachment (200).

To this end, the assembled mounting-bolt unit 400 according to the present invention is assembled by being inserted into the rectangular mounting-hole 110 drilled in the counterpart 100, and is a metal guide member that is deformed and fixed when the nut 300 is fastened. 410, a metal clip member 420 coupled to the guide member 410 and inserted into the mounting-hole 110 to form a bolt receiving space 423 (see FIG. 5) therein, and the clip member 420 It is accommodated in the bolt receiving space 423 of and gradually advances as the nut 300 is tightened, and the guide member 410 is roughly divided into a bolt member 430 that firmly fixes the mounting-hole 110, each A detailed structure of the components will be described in detail with reference to FIGS. 3 to 7 .

First, as shown in FIGS. 3 to 5, the metal guide member 410 is caught on the outer surface of the counterpart 100 around the mounting-hole 110 and has a square hole in the center in communication with the mounting-hole 110 ( 412) is formed by bending the perforated outward flange 411 and the upper and lower sides of the square hole 412 of the outward flange 411 toward the rear, respectively, in contact with the upper and lower wall surfaces of the mounting-hole 110. It has a pair of fixing ribs 413 extending into the inner space of the counterpart 100. The fixing ribs 413 are provided to face the upper and lower sides of the outward flange 411, and are configured to be caught and fixed in the mounting hole 110 of the counterpart 100 when they open outward.

As shown in FIGS. 4 to 7, the metal clip member 420 includes a pair of locking flanges 421 that are stuck in close contact with the front surfaces of the left and right sides of the outward flange 411 of the guide member 410, and the locking flange A pair formed inside of the 421s to be bent backward, respectively, to be inserted into the inner space of the counterpart 100 while in contact with the left and right wall surfaces of the mounting-hole 110, and to form a bolt receiving space 423 inside. Equipped with a guide wall 422 and a bolt support portion 424 bent so that the rear ends of the guide walls 422 are connected. The clip member 420 is provided with a separation prevention rib 425 extending in the longitudinal direction by partially cutting the center of the pair of guide walls 422 and then bending them inward. The release prevention rib 425 is accommodated in the slide groove 434 of the bolt member 430 to be described later and guides the bolt member 430 to move forward and backward. In addition, in the clip member 420, hook pieces 426 are formed so that the upper and lower sides of the guide wall 422 are partially cut and then bent at an angle to the outside to exert elasticity, which is a mounting hole ( 110), when the clip member 420 is fitted, it is deformed to allow fitting, and after being fitted, it is restored to prevent separation of the clip member 420. The metal guide member 410 and the clip member 420 are preferably formed by press-processing a metal plate.

In addition, as shown in FIGS. 4 to 6, the metal bolt member 430 is accommodated in the bolt receiving space 423 of the clip member 420, and is disposed to be movable back and forth in the bolt receiving space 423. It is defined as a square bolt head 431 and a bolt shaft 435 that is press-fitted to the center of the bolt head 431 and has a screw thread on the outer wall so that the nut 300 can be assembled. The bolt head 431 has upper and lower wall surfaces 432 and 433 formed in a trapezoidal shape in which the cross-sectional thickness gradually increases from the front to the rear. Therefore, as the nut 300 is tightened to the bolt shaft 435 penetrating the counterpart and the mounting object, the bolt head 431 gradually escapes outward from the counterpart 100 and moves the fixing ribs 413 outward. Open to the mounting-to be fixed to the hole (110). In addition, slide grooves 434 extending in the horizontal direction (front and rear direction) are provided on the left and right walls of the bolt head 431 to correspond to each other, and as described above, the separation prevention rib 425 of the clip member 420 ) is to be accommodated and arranged. It is preferable that the bolt head 431 is press-fitted with a bolt shaft 435 on its center after the outer shape is manufactured by a forging process.

In this way, after the separately manufactured bolt member 430 is inserted into the bolt receiving space 423 of the clip member 420, the engaging flange 421 of the clip member 420 is attached to the outward flange 411 of the guide member 410 When the clip member 420 is inserted into the guide member 410 so as to be in close contact with the front side, the assembly type mounting-bolt unit 400 is completely assembled. Also, the cross-sectional size of the final end of the bolt head 431 is preferably configured to substantially match the open area of the rectangular mounting-hole 110 drilled in the counterpart.

<Description of the process of mounting the attachment using the assembled mounting-bolt unit according to the present invention>

Next, a process of mounting a fixture using the assembled mounting-bolt unit 400 according to the present invention configured as described above and the effect thereof will be described with reference to FIGS. 8 to 10 .

First, as shown in FIG. 8, when the assembled mounting-bolt unit 400 is inserted into the mounting-hole 110 of the counterpart 100 and temporarily assembled, the tip of the bolt shaft 435 of the bolt member 430 is protrudes from the outside of the object. At this time, since the assembly-type mounting-bolt unit 400 is assembled from the outside to the inside of the counterpart 100 in a state where the fixing ribs 413 are not deformed, it is easily inserted and temporarily assembled without interference from the surroundings, and the guide member 410 The outward flange 411 of ) is caught while making surface contact with the outer surface of the counterpart 100 around the mounting-hole 110. At this time, the assembly-type mounting-bolt unit 400 is assembled in place without shaking inside the mounting-hole 110 due to the fixing ribs 413 and the guide walls 422 of the clip member 420. maintain. In addition, the engaging hook pieces 427 are deformed in the process of inserting the clip member 420 into the mounting hole 110 to allow fitting, and are restored after being inserted to prevent the clip member 420 from being separated. That is, even when the assembled mounting-bolt unit 400 is temporarily assembled, it does not come out of the mounting-hole 110 and remains in place.

In this state, after aligning the mount 200 with the mounting hole 110 of the counterpart 100, attach the nut 300 to the tip of the bolt shaft 435 passing through the counterpart 100 and the mount 200. Tighten. As shown in FIG. 9, as the nut 300 is tightened to the bolt shaft 435 of the bolt member 430 of the mounting-bolt unit 400, the bolt head 431 moves toward the outer side of the counterpart 100. (See the direction of the arrow in FIG. 9) and gradually come out.

10, as the bolt head 431 comes out by tightening the nut 300, its upper and lower wall surfaces 432 and 433 mount the fixing ribs 413 from the inside to the outside of the mounting-hole 110. (refer to the direction of the arrow in FIG. 10). Therefore, the assembled mounting-bolt unit 400 is firmly fixed to the mounting-hole 110, and the mounting object 200 is also completely mounted outside the counterpart object 100.

As described above, the assembly-type mounting-bolt unit 400 according to the present invention can be used by being inserted into the mounting-hole 110 from the outside of the counterpart 100, and the mounting object 200 and the attachment 200 according to the nut 300 tightening. By being firmly fixed to the mounting hole 110 of the counterpart 100 together, it is possible to facilitate the mounting work of the mount 200 . In addition, even when the assembly-type mounting-bolt unit 400 is temporarily assembled, it is accurately maintained in the mounting-hole 110 without shaking and is prevented from falling out, so that the attachment 200 can be reliably assembled in place.

100. Counterpart 110.. Mounting-Hole
200.. Attachments 300.. Bolts
400.. assembly type mounting-nut unit 410.. guide member
411.. outward flange 412.. square hole
413.. fixed rib 420.. clip member
421.. catch flange 422.. guide wall
423.. Nut receiving space 424.. Bolt support
425.. Separation prevention rib 426.. Hook piece
430.. bolt member 431.. bolt head
432,433.. wall 434.. slide home
435.. bolt shaft

Claims (3)

In the assembly-type mounting-bolt unit 400 for fixing the mounting object 200 using a nut 300 and assembled by being inserted into a square mounting hole 110 drilled in the counterpart 100;
The assembled mounting-bolt unit 400;
An outward flange 411 caught on the outer surface of the counterpart 100 around the mounting-hole 110 and having a square hole 412 perforated in the center in communication with the mounting-hole 110, and the outward flange 411 A pair of fixing ribs 413 that are formed by bending the upper and lower sides of the square hole 412 toward the rear, respectively, and extending into the inner space of the counterpart 100 while contacting the upper and lower walls of the mounting-hole 110. ) And a metal guide member 410 equipped with;
A pair of locking flanges 421 that are caught in close contact with the front surfaces of the left and right sides of the outward flange 411 of the guide member 410, and are bent from the inside of the locking flanges 421 toward the rear, respectively, so that the mounting- A pair of guide walls 422 contacting the left and right wall surfaces of the hole 110 and being inserted into the inner space of the counterpart 100 and forming a bolt receiving space 423, and the rear ends of the guide walls 422 are connected. A metal clip member 420 having a bolt support portion 424 formed bent so as to be supported;
A square bolt head 431 movably disposed in the bolt receiving space 423 of the clip member 420 and press-fitted to the center of the bolt head 431, and a nut 300 may be assembled thereto. It consists of a bolt shaft 435 with a thread threaded on the outer wall so that the upper and lower walls 432 and 433 of the bolt head 431 are formed in a trapezoidal shape in which the cross-sectional thickness gradually increases from the front to the rear, As the nut 300 is tightened to the tip of the bolt shaft 435 penetrating the 100 and the mounting object 200, the object 100 gradually comes out in the outer direction and the fixing ribs 413 move outward. A metal bolt member 430 that is opened and fixed to the mounting-hole 110; Assembled mounting-bolt unit, characterized in that it comprises. According to claim 1,
The clip member 420 is provided with a separation prevention rib 425 extending in the longitudinal direction by partially cutting the center of the pair of guide walls 422 and then bending it inward,
Slide grooves 434 are formed on the left and right side walls of the bolt head 431 of the bolt member 430 so that the separation prevention ribs 425 are accommodated and disposed.
The assembly-type mounting-bolt unit, characterized in that the bolt member 430 can move forward and backward along the separation prevention rib 425 while being accommodated in the bolt receiving space 423. According to claim 2,
The clip member 420 is configured to exhibit elastic force by partially cutting the upper and lower sides of the guide walls 422 and then bending the front ends obliquely outward, so that the clip member 420 is attached to the mounting-hole 110. Assembly type mounting-bolt unit, characterized in that the locking hook pieces 426 are provided to allow the fitting by being deformed during fitting and to allow fitting, and to be restored after fitting to prevent the clip member 420 from being separated.

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