KR940008121B1 - Adjustable fastening device for assembling video screens - Google Patents

Abstract

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Description

Fastening device for assembly of adjustable video screens

1 is a cross-sectional view of the fixing device according to the present invention separated from two members connected at the same time.

2 is a cross-sectional view of FIG. 1 in which two members are connected at the same time.

3, 4 and 5 are each a right sectional view of one embodiment of the fixing device according to the invention.

6 and 7 are each a right sectional view of yet another embodiment of a fixing device according to the invention.

* Explanation of symbols for main parts of the drawings

1: fastening device 2: screw

3: first member: connection tabs

4: second member: front portion

5: through-hole 6: head

8 dead seat 10 hollow projections

11 side wall 12 ribs

16: expansion block or locking block

20: male part

21: threaded inner seat

23: female part 24: rear end

25: front end 26: through hole

27: tab 28: shoulder flange

30 side member 31 inclined surface

35: U-shaped flat spring

36: recess 38: stop tabs

40: outer radial tabs G: gap

The present invention provides an adjustable fixation that connects two members, in particular a video screen and a case that supports and accommodates the video screen, to each other to automatically tighten any slack between the two members. It relates to an adjustable fastening device.

When assembling a relatively wide range of flatmembers, such as panels or TVs or video terminal screens, in their respective supporting cases, various technical difficulties arise due to manufacturing tolerances. It is a known fact.

That is, technical difficulties resulting from matching multiple connection points on two members at the same time, for example technical difficulties caused by screws or other fastening members, are not all on the same plane.

As in most applications, when ensuring complete parallel assembly of the two members, any junction should be filled to compensate for any looseness that occurs when the two members are placed in plane with each other.

This process resulted in assembly into a complex and time-consuming job.

In addition to lower productivity and higher production costs, this work has always been a drawback that affects the quality of finished products.

An object of the present invention is to provide a fixing device for connecting two members to each other.

That is, the device automatically adjusts the position of the device to compensate for any slack that occurs between the various connection points on the two members when the two members are positioned flat together at the same time. It is in composition.

In view of this object, according to the present invention, in the adjustable fixing device for connecting the two members to each other so that any looseness between the two members is automatically tightened, formed on the first member of the two members; A screw loosely received inside the through hole, and is fixedly inclined inside the dead seat formed on the second member of the two members and is slidably accommodated so as to correspond to the through hole on the first member. A wedge shaped male part having an internal thraded seat configured to align the screw with the screw by combining an expansion block, the bent at the first end of the wedge shaped male part. To receive a wedge shaped male portion and to receive the screw fitted through the female portion towards the male portion at a second end opposite the first end. A radially flexible female part and a lateral locking means on the male part configured to fit on each sidewall on the deadsheet Provide the device.

One embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 denotes an adjustable fastener, which is connected to two relatively large planar members, namely the first member, by means of a connecting means which integrally forms the device 1, i. An adjustable fixing device for connecting the second members 3 and 4 to each other is shown. Here, the two flat members 3 and 4 are panels, for example, preferably a connecting tab 3 on a known type video screen (not shown for simplicity) and a plastic material having a large manufacturing tolerance. And a front portion 4 of a case (not shown for the sake of simplicity) for accommodating the video screen.

The first and second members 3 and 4, which must be accurately aligned in parallel, constitute a plurality of connecting points (only one for convenience), each of which is formed through the first member 3 and the first The first member 3 is formed so that the screw 2 can be loosely received from the inside and can be adjacent to each other by the head 6, and the second member is configured to be accommodated in the fixing device 1 and corresponds to the through hole 5. The corresponding dead seat 8 formed on the four phases is constituted.

6 and 7, the dead sheet 8 is preferably constituted by hollow projections 10 having sidewalls 11 reinforced by ribs 12 in the second member 4, and in a horizontal cross section. It consists of a prismatic shape of, for example a rectangular cavity shape.

The mouth of the deadsheet 8 is arranged opposite to the first member 3 and the first member 3 is connected adjacent to the hollow projection 10 and the through hole 5 is provided such that the first member 3 is uniform with the second member 4 and Oppose the inlet of the deadsheet to be placed in parallel.

However, due to manufacturing errors, each inlet of the deadsheet 8 is not coplanar and the first member 3 is located only in one of the hollow protrusions 10.

As a result, a gap is formed between each inlet of the other deadsheet 8 and the first member 3 so that the gap varies from one deadsheet to another deadsheet as in FIGS. 1 and 2.

In order to compensate for the variable looseness other than by screw 2 or by any other means, i.e. fixture 1, the stem of the fixture has a relatively wide gap G. In this case (the length of the gap can be easily determined by a technician once the maximum manufacturing tolerances of the first and second members 3 and 4 are known), and the length of the gap should be sufficient to insert into the deadsheet 8 It is a known type of prismatic type, such as dead sheet 8, which is slidable in the axial direction and can be fixed obliquely, i.e., prevents rotation around the longitudinal axis and at the same time slides parallel to the longitudinal axis ( An expansion block 16 is configured to be accommodated inside each dead sheet 8 so as to be sliding.

The fixing device 1 is also laterally supported on the expansion block 16, and is capable of selectively fixing the expansion block 16 in the axial direction and at the given position inside the dead sheet 8 on the sidewall 11 of the date sheet 8. And constitute a locking means configured to cooperate with.

In addition, as in FIGS. 3, 4 and 5, the expansion block 16 constitutes a wedge-shaped bottom male part 20 and is configured to receive a stem of screw 2. Configured to receive the threaded inner seat 21 and the male portion 20 bent at the rear end 24 and through the aperture 26 at the front end 25 opposite the rear end 24 toward the male portion 20. And has a radially flexible upper arm portion 23 configured to receive a screw 2 adapted longitudinally through the arm portion.

At least one pair of opposing flexible tabs that secure the rear end 24 to one end of the male portion 20 opposite the female portion 23 opposite the female portion 20. It is connected integrally with the male part 20 by 27.

The arm portion 23 is formed in a substantially U shape, a shoulder flange 28 formed of two hard parallel side members and integrally formed with the front end 25; It protrudes longitudinally from the front end 25 to the male part 20, and constitutes a pair of longitudinal side members 30 constituting the main body of the arm part 23.

The side member 30 is configured to cooperate with respective inclined surfaces 31 formed on the front surface of the male portion 20 and on the male portion inserted into the female portion 23, and converge in the insertion direction inside the female portion 23 ( The side member 30, which is inclined to converge, and then as a flexible part, allows the male part 20 to be inserted into the inner part of the arm part 23.

According to the invention, the means of the axial locking block 16 is formed between the two upper members constituting the shoulder flange 28, the U-shaped spring (U-) being integrally supported on the front end 25 of the arm portion 23. shaped flat spring) 35.

The U-plate spring 35 is clicked on the arm part 23, the arm part 23 having a pair of recesses 36 at the side members 30 laterally, the recess 36 being the By blanking each side, each flexible stop tab 38 formed in the U-plate spring 35 is clicked.

The U-plate spring 35 has at least one pair of outer radial tabs 40 formed by cutting into sidewall 11 on the deadsheet 8 and each cutting end of the U-plate spring 35 which is bent laterally. It is preferably configured to be, and protrudes (diverging) in the axis of symmetry of the fixed block 16.

The operation is described below.

In actual use (first and second degrees), the fixing block 16 is inserted into the dead sheet and the screw 2 is inserted into the through hole 5. When the two first and second members 3 and 4 are connected to each other and then the first member 3 is positioned in the at least one hollow projection 10 and the shoulder flange 28 is located in the fixed block 16 which closes the inlet of the dead sheet 8. To merge with each other.

Finally, the first and second members 3 and 4 are arranged in parallel and connected to each other by torquing the screw 2 inside the threaded inner seat 21 on the fixed block 16.

In this case, when the gap between the inlet of the dead sheet 8 and the first member 3 at each connection point is nil (that is, no manufacturing error), the shoulder flange 28 is the hollow protrusion 10 and the first. Gripping between the members 3 prevents the fixed block 16 from drawing with dead sheet 8.

As a result, the screw 2 is rotated inside the threaded sheet 21 and the head 6 of the screw 2 is adjacent to the first member 3, and the male portion 20 is raised in the axial direction to bend the tabs 27 and simultaneously Arm 23 is fixed.

The two side members 30, when contacted by the inclined surface 31, are separated to enter the outer diameter tabs 40 into the side wall 11, and are configured such that the fixing block 16 is permanently fixed inwardly of the sheet sheet 8.

Thus, the first member 3 is integrally connected to the fixed block 16 by a screw 2 and the fixed block 16 is integrally connected to the second member 4, and then connected to the outer diameter clip 40 which enters into the side wall 11. In this case, the first and second members 3 and 4 are integrally connected to each other by the outer diameter tab 40.

On the other hand, if there is a gap G, a clearance exists between the shoulder flange 28 and the first member 3.

And the fixed block 16 is free to move freely in the axial direction to make a partial departure from the dead sheet 8.

As a result, screw 2 is rotated from the male part 20 into the threaded seat 21 so that when the head 6 of the screw 2 is adjacent to the first member 3, the male part 20 is also supported by a flexible tab 27, like the female part 23. Axial to the inlet of Dead Sheet 8.

Since this movement is not disturbed by the shoulder flange 28, which is not impeded by the first member 3, and the fixed block 16 loosely received inward of the dead sheet 8, the tab 27 is not bent and the entire fixing block has a gap G. The screw 2 is axially displaced from the deadsheet 8 in the direction of the arrow of FIG. 2 until it is sufficiently compensated by the protrusion of the fixing block 16.

At this time, the shoulder flange 28 moves the male part 20 only by rotating the screw 2 adjacent to the first member 3 so as to fix the fixing block 16 in the axial direction and as described above in relation to the zero gap state. The tab 27 is bent, the side member 30 is separated, and the outer diameter tab 40 is moved to the inside of the side wall 11 so that the fixed block 16 and the first member 3 are integral with the second member 4.

The advantages of the fixing device according to the invention are evident in the technical content described above.

In spite of the slack present at the connection between the two first and second members arranged in parallel, this looseness occurs before the outer diameter tab 40 is inserted, i.e. the first and second members 3 and 4 Receive a reward by automatically leaving part of Fixed Block 16 in Dead Sheet 8 before connecting.

In addition, such a deviation is automatically obtained only by simply rotating the screw and when there is a loosening between the two first and second members. Since this does not require any special provision in advance in the assembling work, the fixing device according to the present invention is configured to make the assembling work as simple and quick as compared with the conventional known fixing device.

Claims (5)

An adjustable fixing device for connecting two members to each other such that any looseness is automatically tightened between two members, comprising: a screw loosely received inside a through hole formed on a first member of the two members; The expansion block is inclinedly fixed to an inner side of a dead seat formed in the second member and accommodated to slide in an axial direction, and a combination of an opening block and a corresponding expansion block on the first member is used for the expansion block. A wedge shaped male part having an internal threaded seat configured to mate with the screw, the first part receiving the bent at the first end and opposing the first end; Radially-flexible fe configured to receive the screw fitted through the arm towards the male in two stages and a lateral locking means on the male part configured to fit into each side wall on the dead sheet. The method of claim 1, wherein the expansion block is a prism shape and the same as the shape of the prism of the dead seat (dead seat), the male portion and the female portion of the block is the first end of the arm portion and the arm portion Said fixing device being fixed integrally to each other by at least one pair of opposed flexible tabs which connect to one end of said opposite male portion. 3. The system of claim 1 or 2, wherein the arm portion is substantially U-shaped and cooperates with a shoulder flange formed integrally with the second end and with each inclined surface on the male portion. The fixed side member is formed by forming a pair of protruding longitudinal side members so that the side members are stepwise separated by the inclined surface, and then the male part is inserted into the female part. Device. The U-shaped spring according to any one of claims 1 to 3, wherein the fixing member constitutes a U-shaped flat spring which is integrally supported at the second end of the arm portion. Each protruded and axially bent by diverging around the axis of the expansion block to form a pair of outer radical tabs configured to align with the sidewalls of the deadsheet fixing the expansion block. Said holding device characterized by constituting cutting ends. 5. A pair according to claim 4, wherein said U-plate springs click onto said arm portions and said arm portions are tightly fitted and bound by respective flexible stop tabs on said U-plate springs. The recess is configured laterally and the stop tab is formed by blanking the U-shaped spring (blank).

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