JP4346720B2 - Tilt hinge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tilt hinge suitable for use in tilting and holding a tilted body such as a liquid crystal display panel with respect to an apparatus main body or a mounting base in the vertical direction.
[0002]
[Prior art]
Conventionally, as this type of tilt hinge, as shown in Japanese Utility Model Publication No. 6-10198, a fixed shaft is attached to a bearing plate portion of a mounting member attached to a mounting base, and a liquid crystal display panel or the like is attached to the fixed shaft. A support plate portion of a support member to which the tilted body is attached is pivotally supported, and a friction washer is brought into contact with the support plate portion while an insertion hole provided in the central portion thereof is passed through the rotating shaft. In order to generate a friction torque between the friction washer and the support plate by bringing the compression coil spring, which is ring-wound around the rotating shaft, into contact, and pressing the compression coil spring against the friction washer, it is fastened to the fixed shaft. A screw nut is known.
[0003]
[Problems to be solved by the invention]
This conventionally known tilt hinge is a so-called uniaxial type. If a high friction torque is to be obtained with respect to a heavy tilted body as in the case of a large liquid crystal display panel, the number of friction washers will be described. Because the structure is complicated and strong tightening with a tightening nut is required, it must be divided into one that rotates with the support member alternately and one that is fixed to the fixed shaft. However, there is a problem that the friction washer is easily worn and the change in the friction torque over time is inevitably increased.
[0004]
An object of the present invention is to provide a tilt hinge capable of easily obtaining a stable high friction torque with a simple structure.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention includes a first bracket attached to one of a mounting base or a tilted body tilted with respect to the mounting base, and a bearing means attached to the first bracket. A second bracket that is pivotally supported and attached to the other of the mounting base or the tilted body, and a shaft support portion by the bearing means between the second bracket and the first bracket. A cylindrical shaft portion formed by squeezing the bearing means from the side of the second bracket, and the first shaft for bearing the shaft portion. A bearing hole provided on the side of the bracket, a mounting screw attached to the shaft portion so that the shaft portion does not come out of the bearing hole, and the shaft portion is inserted in the axial direction of the central portion, thereby Racquets and between the second bracket, and constituted by a washer is interposed between said first bracket and mounting screws, the friction means, either one of the said second bracket the first bracket An arc-shaped slot provided outside the shaft support portion of the bearing means, and the arc-shaped slot passing through the arc-shaped slot and attached to the other one of the first bracket and the second bracket shaft and a first bracket or the second side or arranged on both sides one or more friction washers bracket by penetrating the shaft at its center axis direction, the first of the friction washer It comprises elastic means attached to the shaft so as to be in pressure contact with the bracket or the second bracket.
[0006]
In this case, the present invention is such that one or both of the friction washers are made of a self-lubricating member such as an oil-containing metal and an oil-containing resin, or one or a plurality of elastic means are made to penetrate the shaft at the center thereof. It can be a single spring washer or a disc spring, or a compression coil spring that is wound around the shaft .
[0007]
The present invention further uses any one of a tightening nut, a push nut, an E-ring, or caulking as a means for pressing the spring washer or the compression coil spring toward the bracket side, or a friction means for the bearing means. Can be provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The drawings show an embodiment of the present invention. In particular, in FIGS. 1 to 3, an indication symbol 1 is an example of a tilted body, for example, a liquid crystal display panel, and 2 is a mounting base to which the liquid crystal display panel 1 is attached. It is. The mounting base 2 may be a device body of an OA device such as a personal computer or a word processor. An instruction symbol 3 is a tilt hinge for mounting the liquid crystal display panel 1 on the mounting base 2 so as to be tiltable in the vertical direction. The structure of the tilt hinge will be described below.
[0009]
Reference symbols 4 and 4 are first brackets formed by bending the mounting plate portions 4 a and 4 a and the bearing plate portions 4 b and 4 b in a right angle direction, and are fixed on the mounting base 2. The first brackets 4 and 4 are separate and independent members in the embodiment, but may be integrated into a substantially U-shaped cross section. In that case, the mounting plate portions 4a and 4a are made common.
[0010]
Reference symbols 5 and 5 are second brackets formed by bending the attachment plate portions 5a and 5a and the support plate portions 5b and 5b in a right angle direction, and the attachment plates for attaching the attachment plate portions 5a and 5a to the liquid crystal display panel 1. 6 is fixed through screws 7 and 7. The second brackets 5 and 5 may not be independent members but may be integrated with the mounting plates 5a and 5a in common so that the second brackets 5 and 5 are bent to have a substantially U-shaped cross section. Alternatively, the liquid crystal display panel 1 may be attached directly without using the attachment plate 6.
[0011]
Next, bearing means A for pivotally supporting the second brackets 5 and 5 on the first brackets 4 and 4 and friction means for stopping the second brackets 5 and 5 steplessly (free stop). However, since the structure is the same, only one of them will be described.
[0012]
First, as for the bearing means A, as shown in FIGS. 4 to 5, the second bracket 5 has a shaft portion 5 c squeezed and integrally protruded from the support plate portion 5 b of the first bracket 4. It is pivotally supported in a bearing hole 4c provided in the bearing plate portion 4b, whereby the second bracket 5 can be rotated with respect to the first bracket 4.
[0013]
An instruction symbol 8 is an attachment screw for locking the shaft portion 5c to the bearing plate portion 4b, and 9a and 9b are washers having insertion holes 9c and 9d through which the attachment screws pass, respectively. A washer 10 is interposed between the support plate portion 5b and the bearing plate portion 4b by inserting the shaft portion 5c into an insertion hole 10a provided at the center thereof.
[0014]
As another embodiment of the bearing means A, a cylindrical shaft portion 5c that is squeezed and integrally protruded from the support plate portion 5b is provided on the bearing plate portion 4b side of the first bracket 4. A bearing hole may be provided on the support plate portion 5b side, or an independent support shaft attached to the instruction plate portion 5b or the bearing plate portion 4b may be used. In short, this bearing means can be replaced by various known means.
[0015]
The washer 10 may be made of a simple metal such as stainless steel or iron plate, but is made of other synthetic resin such as nylon or Teflon, or a fiber, an oil-containing resin, an oil-containing metal, an oil-containing sintered metal, or the like. You may comprise. These can be arbitrarily selected as necessary. Furthermore, it is also possible to omit the mounting screws 8 and washers 9a and 9b.
[0016]
Next, the friction means B will be described. Similarly, in FIGS. 4 to 5, the small diameter portion 11 a provided at one end of the shaft 11 is inserted into the mounting hole 4 d provided at a position away from the bearing hole 4 c of the bearing plate portion 4 b of the first bracket 4. The shaft 11 is attached so as to protrude in a right angle direction by caulking the end portion, and this shaft 11 passes through an arcuate guide long hole 5d provided at a position away from the shaft portion 5c of the support plate portion 5b. The first friction washer 12 is interposed between the bearing plate portion 4b and the support plate portion 5b while the shaft 11 is inserted through an insertion hole 12a provided at the center thereof. In addition, the free end side of the shaft 11 is in contact with the other side opposite to the side where the support plate 5b is in contact with the friction washer 12, and the second friction washer 13 is an insertion hole provided in the center thereof. The shaft 11 is attached to 13a while being inserted into contact with the other side surface of the second friction washer 13, and the first and second spring washers 14, 15 and the presser flat washer 16 are respectively provided in the central portion thereof. The shafts 11 are inserted in the through holes 14a, 15a, 16a provided in the shaft 11 and are sequentially attached in the coaxial direction. Then, by caulking the holding washer 16 side of the free end side which is the other end of the shaft 11, the first and second friction washers 12 and 13 are supported by the support plate portion 5 b of the second bracket 5. It is comprised so that it may press-contact to both sides.
[0017]
FIG. 6 shows another embodiment of the friction means, and the friction means C according to this embodiment is replaced with a shaft 11 fixed to the bearing plate portion 4b of the previous embodiment by caulking. A collar 17 attached to the bearing plate portion 4b of the bracket 4 with an attaching screw 18 is used as a support shaft. Then, a tightening nut 19 is screwed onto the tip of the mounting screw 18 passing through the collar 17, and is inserted into each insertion hole (not shown) via the pressing washer 16, the spring washer 20 and the spacer 21. The first and second friction washers 12 and 13 attached to the collar 17 are pressed against the support plate portion 5b of the second bracket 5 while the collar 17 is inserted. In this embodiment, there is one spring washer. Other instruction symbols that are the same as those in the previous embodiment represent the same members, and thus description thereof is omitted.
[0018]
Therefore, as shown in FIG. 3 in particular, when the liquid crystal display panel 1 as the tilted body is swung vertically with respect to the mounting base 2, the second bracket 5 rotates together with the shaft portion 5c as a fulcrum. Although the second bracket 5 is in a pressure contact state in which both sides of the support plate portion 5b are sandwiched between the first and second friction washers 12 and 13, a frictional force is generated here. The rotation of the second bracket 5 is controlled by the frictional force, and the liquid crystal display panel 1 can be stably locked and held at an arbitrary tilting position. 4e is a stopper piece, and 5e is a guide hole for restricting the movement of the stopper piece.
[0019]
As other than the embodiment of the bearing means A and the friction means B and C described above, the shaft portion may be provided on the first bracket side, the shaft or a collar instead of this shaft and the mounting screw. May be attached to the second bracket side. In that case, the bearing hole is provided on the second bracket side, and the guide slot is provided on the first bracket side. Further, the spring washer may be a compression spring or a disc spring, and the number of spring washers used is not limited.
[0020]
As a material for the friction washer, it is most preferable to use a non-asbestos friction material called Nichias' Ultrastop (registered trademark). However, as described above, other metal washers such as stainless steel and iron plate , It may have a self-lubricating property such as an oil-containing sintered metal or an oil-containing resin. When an oil-impregnated material having self-lubricating properties is used, it can be used without a grease.
[0021]
【The invention's effect】
Since the present invention is configured as described above, the friction means is provided at a position away from the bearing position of the second bracket with respect to the first bracket as compared with a conventionally known uniaxial tilt hinge. The tilted body can be stably locked and held at an arbitrary tilting position with a lower frictional force than that. Therefore, compared to a single-shaft type, it does not require a strong pressure contact force against the friction washer in order to stop and hold the tilted body at an arbitrary tilt position. Thus, a stable friction torque without fluctuation can be created.
[Brief description of the drawings]
FIG. 1 is a front view showing a mounting state of a liquid crystal display panel using a tilt hinge according to the present invention.
FIG. 2 is a plan view showing a mounting state of the liquid crystal display panel shown in FIG.
3 is a right side view showing a mounting state of the liquid crystal display panel shown in FIG. 1. FIG.
4 is a cross-sectional plan view of the left portion of the tilt hinge shown in FIG. 2;
FIG. 5 is an exploded perspective view of a left portion of the tilt hinge shown in FIG.
FIG. 6 is an exploded plan view showing another embodiment of a tilt hinge according to the present invention.
[Explanation of symbols]
A Bearing means B, C Friction means 1 Tilted body (liquid crystal display panel)
2 Mounting base 3 Tilt hinge 4 First bracket 4a Mounting plate portion 4b Bearing plate portion 5 Second bracket 5a Mounting plate portion 5b Support plate portion 5c Shaft portion 5d Guide slot 11 Shaft 12 First friction washer
13 Second friction washer
14 First spring washer
15 Second spring washer
16 Flat washer for presser
17 Color
18 Mounting screw 19 Tightening nut 20 Spring washer

Claims (6)

A first bracket attached to one of the attachment base or the tilted body tilted with respect to the attachment base, and the attachment base pivotally supported by the first bracket via a bearing means. Or a second bracket attached to the other one of the tilted bodies, and friction means provided at a position apart from the shaft support portion by the bearing means between the second bracket and the first bracket. A cylindrical shaft portion formed by squeezing the bearing means from the second bracket side, a bearing hole provided on the first bracket side for bearing the shaft portion, and the shaft A mounting screw that is attached to the shaft portion so that the portion does not come out of the bearing hole, and the shaft portion is inserted in the axial direction of the central portion between the first bracket and the second bracket, and the front Constituted by a washer is interposed between the first bracket and the mounting screws, the friction means, the outer shaft支個plants of said bearing means that either one of the second bracket and the first bracket An arc-shaped elongated hole provided at a position, a shaft passing through the arc-shaped elongated hole and attached to the other one of the first bracket and the second bracket, and an axial direction of the shaft in the central portion thereof And one or a plurality of friction washers disposed on one side or both sides of the first bracket or the second bracket, and the friction washer is pressed against the first bracket or the second bracket. A tilt hinge comprising an elastic means attached to a shaft . 2. The tilt hinge according to claim 1 , wherein one or both of the friction washers is a self-lubricating member such as an oil-containing metal and an oil-containing resin . 3. The tilt hinge according to claim 1, wherein the elastic means is one or a plurality of spring washers or disc springs having the shaft penetrating the central portion thereof. 4. The tilt hinge according to claim 1, wherein the elastic means is a compression coil spring that is wound around the shaft .   The means for pressing the spring washer or the compression coil spring toward the bracket is any one of a tightening nut, a push nut, an E-ring, and caulking. The described tilt hinge. 6. The tilt hinge according to claim 1, wherein the bearing means is also provided with friction means.

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