JPH04371992A - Height adjustment type display board device - Google Patents

Abstract

PURPOSE: To provide a display panel device including a display panel like a plane plate which is provided with hollow, narrow and long channels approachable from narrow and long slots formed in respective vertical side parts. CONSTITUTION: A display panel 20 is supported by a pair of slide plates 90 which are approximately parallel with at least two upward extending members and are held between them. Upward extending members are flexible, and reference positions are slightly shifted outward from perpendicular lines, and they are so formed that upper parts of slide plates 90 are pressed to inside walls of respective hollow narrow and long channels 49. By this structure, the display panel 20 is prevented from falling by its own weight, and it can be controlled well in the vertical direction without bringing about vising when a force is applied further.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention relates to a display panel device, and more particularly to a display panel supporting a display panel between a pair of upper pivot assemblies of a foldable support frame, wherein the display panel and the pivot assembly are provided with an improved mechanism. The present invention relates to a rotatable height-adjustable display board device.

0002

2. Description of the Related Art Signage systems that are adjustable in height, orientation, or both have been known and used for some time. Generally, such display board devices include a support frame and a display board rotatably supported at the upper end of the support frame. Many conventional display board devices include a pivot assembly that allows the display board to rotate in a front-back direction, and a slide mechanism that allows the display board to slide up and down relative to a support frame. It is equipped with Adjustment means are provided on the pivot assembly to allow the user to change and fix the orientation and height of the display board.

FIG. 6 shows a conventional display board device including a support frame 40 and a display board 20. As shown in FIG. The display board 20 is rotatable and vertically slidable with respect to a pair of pivot assemblies 70 disposed on the upper part of the support frame 20.

Conventional display board 20 includes a flat panel 22 whose outer periphery is fitted into a frame 30 having opposed vertical edges and opposed horizontal edges. Frame 30 may be formed of extruded aluminum, for example, and typically includes an upper frame portion 32;
a bottom frame portion 31 and a pair of side frame portions 33
, 34.

The support frame 40 is composed of front and rear members 50 and 60, each of which has an inverted U-shape, and includes base portions 52 and 62, and first and second leg portions 54 extending upward, respectively. 64, 56, and 66. A first leg portion 54,64 and a second leg portion 56,66 of each frame member 50,60 are connected to a pivot assembly 70,7.
Since they are rotatably attached to each other by 0,
The support frame 40 can be folded flat for storage. The display board 20 is rotatably supported between pivot assemblies 70, 70, and each pivot assembly 70
is provided with a knob 72 that allows the display board 20 to be fixed at a desired position and height.

7 and 8 are cross-sectional views of the pivot assembly 70 of FIG. 6 taken along lines 3a-3a and 4a-4a, respectively. As can be seen in the figures, a hollow elongated channel 49 is formed in the longitudinal direction of the side frame portion 34. The elongated channel 49 connects the partition wall 47 and the front and rear walls 4.
0, 41, inclined corner walls 42, 43, and an end wall 44. A majority of the length of the end wall 44 is scored to form a slot 45 . Short extensions 45 and 46 extend from the partition wall 47 toward the panel 22 to form a groove into which the outer periphery of the panel 22 is fitted.

A generally rectangular spring retainer 80 and channel spring 81 are disposed within elongated channel 49 . Channel spring 81 fits into a box-shaped recess within spring retainer 80 to provide tension between partition wall 47 and end wall 44 . A bolt 82 is secured to the opposite side of spring retainer 80 and extends from slot 45 in end wall 44 .

The rotation of the pivot assembly 70 of the display panel 22 about its axis can be understood from FIG. From left to right, the pivot assembly 70 is comprised of a disc-shaped rotary guide 79, a front pivot member 58, and a rear pivot member 68. The bolt 82 protruding from the spring retainer 80 first attaches to the washer plate 83.
It is then inserted through a central hole formed in a component of pivot assembly 70 and then into a threaded hole formed in knob 72 . As can be seen from Figure 8,
Clockwise rotation of knob 72 retracts bolt 82 into knob 72 , causing side frame portion 34 and components of pivot assembly 70 to engage spring retainer 80 .
and the knob 72.

Loosening the knob 72 allows the rotary guide 79 to rotate within the annular recess 59 of the front pivot member 58. Therefore, the display plate 20 can be rotated to a desired orientation around the axis of the pivot assembly 70 (bolt 82) and fixed in that orientation by tightening the knob 72 again.

In conventional display panel devices, the vertical movement of the display panel 20 is effected by a linear groove 78 formed in a generally disc-shaped rotary guide 79. The guide groove 78 has a shape corresponding to the outer shape of the end wall 44 and the inclined corner walls 42 and 43. This structure allows side frame portion 34 to slide vertically between washer plate 83 and guide groove 78 relative to pivot assembly 70 .

The purpose of conventional spring retainer 80 and channel spring 81 is to prevent sign 20 from falling under its own weight when knob 72 is loosened during position adjustment. That is, the partition wall 4 induced by the spring
The frictional bond between 7 and the end wall 44 makes it possible to counteract the effects of weight.

The manufacture of conventional display panel devices is cumbersome because there is only a small difference between a spring force that is too strong and a spring force that is completely ineffective. During assembly, each channel spring 81 must be individually molded, inspected, and shaped by heat treating to obtain the desired radius and appropriate tension.

Problems also exist when using conventional display panel devices. If the tension on one side is too strong, the display board will not move up and down smoothly. If the tension on both sides is too strong, it will be difficult to move the display board 20 without applying excessive force. On the other hand, if the tension is too low, one or both sides of the display board may fall off unexpectedly during position adjustment, and the user will have to concentrate his attention on supporting the display board to obtain the desired position and angle. I have to deflect it.

[Purpose and outline of the invention]

An object of the present invention is to solve the above-mentioned problems associated with conventional display panel devices. In particular, the purpose of the invention is to
To provide a rotatable height-adjustable display board device in which the vertical position of the display board is maintained substantially constant during position adjustment.

A further object of the invention is that the display board remains substantially stationary under its own weight during position adjustment;
To provide a rotatable height-adjustable display board device whose position can be easily adjusted by a user.

A display panel arrangement according to the invention includes a flat display panel with hollow elongated channels accessible through elongated slots formed in each vertical side. The display board is supported by a pair of slide plates substantially parallel to and held between at least two upwardly extending members. The upwardly extending member is flexible;
The reference position is configured to deviate slightly outwardly from the vertical so that the upper portion of each slide plate is pressed against the inner wall of the respective hollow elongated channel. This structure prevents the display from falling under its own weight, but with additional force, it can be adjusted vertically without significant visoring.

[0017]

[Means for Solving the Problems] The present invention provides a base portion;
at least two flexible elongate members extending upwardly from the base and having distal ends spaced apart from the base, the upwardly extending flexible members being longitudinally a support frame that is slightly divergent from each other such that the distal end of each upwardly extending flexible member is located slightly outwardly of an imaginary vertical line perpendicular to said base portion; and a hollow space defining an elongated slot. a generally planar display plate disposed in a plane between said upwardly extending flexible members having a pair of opposed vertical edges having elongated channels therein; placed inside,
a pair of generally planar slide plates having threaded members extending outwardly from each of said elongated slots; and an internally threaded slide plate for threadably engaging each of said threaded members. a pair of knobs provided at the distal end of each of the upwardly extending flexible members, each having a hole formed therein; when the knobs are tightened, each of the flat slides A plate is drawn into a sliding fit on the inner wall of each hollow elongated channel to secure the display plate at a desired height relative to the base, and when the knob is loosened, the An upwardly extending flexible member presses the upper edge of each flat slide plate against the inner wall of the respective hollow elongated channel, thereby preventing the display plate from falling under its own weight. This is a height-adjustable display board device.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The above objects and advantages of the present invention, as well as other objects and advantages, will become more apparent from the following description with reference to the accompanying drawings. The following description is provided to enable any person skilled in the art to make and use the invention, and presents the inventors' best practice for carrying out the invention. However, since the overarching principle of the invention is herein defined to be to provide a rotatable height-adjustable signage device that is particularly simple to assemble and use, various modifications and variations will occur to those skilled in the art. You will be able to think of changes.

FIG. 6 is a perspective view of a conventional rotatable height-adjustable sign assembly, and FIG. 1 is a front view of a preferred sign assembly 10 according to the present invention. The display board device 10 of the present invention has many parts in common with the conventional display board device shown in FIG. For clarity of correspondence, reference numerals for such common elements are consistent throughout the specification and drawings.

The display board 20 has a panel 22 surrounded by a peripheral frame 30. Panel 22 can be formed from a variety of materials such as wood, cork, foam, metal, etc. Panel 22 may be provided with a laminated surface suitable for use with chalk, wax crayons, erasable felt pens, and the like. A preferred material is a foam core laminate.

The outer frame itself consists of a bottom frame portion 3
1, an upper frame portion 32, and a pair of side frame portions 33, 34. Tray 24 may extend from bottom frame portion 31 to accommodate items such as markers and erasers. A clip bar 26 may be provided near the upper frame portion 32 to hold paper, overlays, etc.

As previously mentioned, the conventional sign arrangement of FIG.
and a channel spring 81 (FIGS. 7 and 8).

The purpose of applying tension is to
The purpose is to prevent the display board 20 from slipping off when one or more knobs 72 are loosened. If the tension is too high or too low, the positioning process becomes extremely difficult. Ideally, the display board would remain in the same vertical position during rotation-only operations. However, since the range of suitable tension is narrow and obtaining such tension is difficult in manufacturing, the adjustment operation is generally very troublesome. For example, simply attach the display panel 20 to the pivot assembly 70.
Even if the user wants to rotate about the axis, the user usually loosens both knobs 72,72. If the tension is too low, the display board will fall on one side or both sides, and the user has to adjust the display board to the desired height while rotating the display board at the same time, and then tighten the knob again.

As shown in FIG. 6, the conventional sign assembly includes a collapsible support frame 40 that supports the sign 20 with a pair of pivot assemblies 70. As shown in FIG. The foldable support frame 40 is composed of a front frame member 50 and a rear frame member 60. Each frame member 50, 60 is inverted U-shaped so that it has a base portion 52, 62, respectively, and first and second portions extending upwardly therefrom.
leg portions 54, 64 and 56, 66. Each pivot assembly 70 is comprised of a front pivot member 58 and a rear pivot member 68 that are provided with annular thrust surfaces that pivotally abut each other. Each of the leg portions 54, 56 of the front frame member 50 is secured to a respective front pivot member 58, and each of the leg portions 64, 66 of the rear frame member 60 is secured to a respective rear pivot member 68.

For storage, the front and rear frame members 50,
60 adjacent each other (folded flat) and slide the display board 20 downward, substantially the entire display board is within the U-shape of the frame members 50, 60, and the upper frame portion 32 is attached to the pivot assembly. It will be about the same height as 70. During use, the front and rear frame members 50 of the support frame 40
, 60 from each other (spread them out) and loosen the knob 72.
Position the display board 20 at a desired height and angle. The display board is then fixed in the desired position by tightening the knob 72.

The present invention provides a slide plate 90 and front and rear frame members 50, 6 with simple but major changes.
It consists of 0. According to the invention, spring retainer 80 and channel spring 81 can be eliminated, thereby reducing costs and eliminating the need for testing during assembly. Furthermore, it is possible to securely hold the display board 20 and move the display board 20 without causing visoring, which is advantageous.

As shown in FIG. 1, the first and second leg portions 54, 56 of the front frame member 50 are angled outwardly from an imaginary vertical at an angle θ. In the preferred embodiment, θ=3 degrees. First and second leg portions 64, 66 of rear frame member 60 (not visible in FIG. 1) are also angled outwardly by approximately the same angle. In accordance with the present invention, the front and rear frame members 50, 60 are formed from a material that is fairly stiff but capable of resiliently joining at the bends between the base portion 52 and the first and second leg portions 54, 56. Therefore, the first and second leg portions 54, 56 are temporarily drawn inward, but are urged to return to the reference position defined by the angle θ. The purpose and effect of the above changes made to the front and rear frame members 50, 60 will become clear from the description of FIG. 2.

FIG. 2 is a cross-sectional view of pivot assembly 70 of FIG. 1 taken along line 3--3. As shown in FIG. 2, the slide plate 90 has a hollow elongated channel 49.
and is pressed against the end wall 44 by a head 94 of a bolt or threaded member 92 . A suitable material for the slide plate 90 is nylon. To prevent the bolts from rotating relative to the slide plate 90 and side frame portion 34, the slide plate 90
The shoulder 93 that fits into the square hole formed in the bolt 9
It is provided in 2. A threaded shank of bolt 92 extends from slot 45 in end wall 44 and is inserted through a central hole in a component of pivot assembly 70 . The knob 72 is provided with a threaded hole into which a bolt is threaded.

The shaft of bolt 92 fits into the central hole of pivot assembly 70 and is held in a direction generally perpendicular to leg portions 56,66. This causes the outward slope of the leg portions 56, 66 to be transmitted to the slide plate 90, as shown (exaggerated) in FIG. It has a pressing effect.

The inventor has discovered that the frictional contact between the upper edge 91 of the slide plate 90 and the end wall 44 acts as a simple brake to prevent the display panel 20 from sliding under its own gravity. . When the user moves the display panel 20 upward, the end wall 44 easily slides by the slide plate 90 without vising. When the user moves the display board 20 downward, the force newly applied by the user causes the first and second leg portions 54, 56,
To move 64, 66 inward toward the vertical position,
As the slide plate 90 approaches a position in alignment with the end wall 44, the existing reference frictional force can be easily overcome, since the frictional force is further reduced during the actual moving operation performed by the user. . When the user ceases applying downward force, the outward biasing forces of the legs tend to hold the display in its current position. Once the display board is set at the desired vertical height and rotated the desired angle about the axis of the pivot assembly 70, the user can secure the display board 20 by simply tightening the bolts 72. Those skilled in the art will be able to make various modifications to the preferred embodiment described above while remaining within the spirit of the invention. It is therefore to be understood that the invention may be practiced otherwise than as described above within the scope of the claims.

[0031]

[Brief explanation of drawings]

FIG. 1 is a front view of a preferred embodiment of a display panel device according to the present invention.

2 is a cross-sectional view taken along line 3-3 of FIG. 1 of a preferred embodiment of a pivot assembly according to the present invention; FIG.

FIG. 3 is a cross-sectional view of a preferred pivot assembly according to the present invention taken along line 4-4 of FIG. 1;

FIG. 4 is a perspective view of a slide plate and bolt assembly of a preferred display board device according to the present invention.

5 is a cross-sectional view substantially the same as FIG. 2, but with knob 72 loosened and the resulting angular relationship between side frame portion 34 and slide plate 90 shown somewhat exaggerated; ing.

FIG. 6 is a perspective view of a conventional rotatable height-adjustable display device.

FIG. 7: 3a-3 of FIG. 6 of a conventional pivot assembly.
It is a sectional view along the a line.

8: 4a-4 of FIG. 6 of a conventional pivot assembly; FIG.
It is a sectional view along the a line.

[Explanation of symbols]

10 Display board device 20 Display board 40 Support frame 33, 34 Vertical edge 45 slots 49 Hollow elongated channel 52, 62 Base part 54, 56, 64, 66 Leg part 72 Knob 90 Slide plate 92 bolts

Claims (5)

[Claims] 1. A base, and at least two flexible elongated members extending upwardly from the base and having distal ends spaced apart from the base, the flexible elongate members extending upwardly from the base and having distal ends spaced apart from the base. The supported flexible members are slightly divergent from one another in the longitudinal direction such that the distal end of each upwardly extending flexible member is located slightly outside an imaginary vertical line perpendicular to the base. a generally planar display panel disposed in a plane between the upwardly extending flexible members, the display panel having a frame and a pair of opposed vertical edges having a hollow elongated channel defining an elongated slot therein; and a threaded member disposed within each of the hollow elongated channels and having a threaded member extending outwardly from each of the elongated slots.
said distal end of each of said upwardly extending flexible members defining a pair of generally planar slide plates and an internally threaded hole for threadably engaging said respective threaded member; and a pair of knobs provided in the hollow elongated channel, and when the knobs are tightened, each flat slide plate is drawn so as to be slidably fitted to the inner wall of the respective hollow elongated channel. , the display plate can be fixed at a desired height with respect to the base part, and when the knob is loosened, the upwardly extending flexible member fixes the upper edge of each flat slide plate to the respective A height-adjustable display board device, characterized in that the display board is prevented from falling under its own weight by being pressed against the inner wall of the hollow elongated channel. 2. The support frame is comprised of front and rear frame members, each frame member having a U shape including a horizontal portion and first and second leg portions extending upwardly therefrom.
The base portion is formed of a shape metal tube, the base portion is constituted by a collection of horizontal portions of the front and rear frame members, and the at least two upwardly extending flexible members are connected to the first and second legs of the front and rear frame members. 2. The height-adjustable display board device according to claim 1, wherein the height-adjustable display board device is constructed by combining parts. 3. The distal ends of the first leg portions of each frame member are rotatably connected by a first pivot member, and the distal ends of the second leg portions are rotatably connected by a second pivot member. Because of this, the support frame can be folded flat for storage.
3. The height-adjustable display board device according to claim 2, wherein the horizontal portions of the front and rear frame members can be separated from each other for stabilization. 4. The display board is composed of a substantially flat panel and a frame surrounding the periphery of the panel, and the frame is composed of a horizontal bottom part, a horizontal top part, and two vertical side frame parts. 2. The height-adjustable sign apparatus of claim 1, wherein the side frame portions are identical in cross-section and define the hollow elongated channel and the elongated slot. 5. The height-adjustable display board device according to claim 4, wherein the panel is a laminate of foam core material. .