CN107588302B - Elongated upright post type lifting support frame with pulley - Google Patents

Abstract

The invention relates to an elongated upright post type lifting support frame with a pulley, which comprises: a base; the elongated upright post is arranged on the base and provided with an accommodating chute; the two rail grooves are respectively fixed in the upright posts; the lifting module comprises a U-shaped pitching frame, a receiving plate, a lifting sliding piece which is formed by metal die casting and is in a plate shape, and is pivoted in a U-shaped opening of the pitching frame through a pivot to pitch, swing and adjust the visual angle; rolling bearings are respectively pivoted on the upper and lower edges of the two sides of the rear part of the lifting sliding piece and roll in the two rail grooves; the spring accommodating piece is fixedly arranged on the upright post above the top of the rail groove; and at least one constant force spring, wherein the constant force spring comprises a winding end and a stretching end relative to the winding end, the winding end is slidably arranged in the spring accommodating part, the rotating axis is parallel to a plane shared by the two rail grooves and is perpendicular to the longitudinal direction of the rail grooves, the stretching end is connected to the lifting sliding part, and the stretching end is adjacent to the rear wall of the accommodating chute and moves up and down along the rear wall.

Description

Elongated upright post type lifting support frame with pulley

Technical Field

The invention relates to a support frame for supporting a display to lift on a working surface, in particular to a display lifting support frame with a column required to be elongated (note: the display referred to by the invention comprises a liquid crystal display screen, a display or a display screen for displaying a movable picture, which is hereinafter referred to as a display).

Background

Various displays are widely applied in the present life, the present display is mainly a liquid crystal display, the liquid crystal display is an approximately plate-shaped display, the display cannot stand by itself, the display can be used only by being supported by a supporting device such as a supporting frame, and the display is more convenient to use in practical use, most of the displays also need to be lifted, the lifting height is adjusted by adopting a lifting module which can balance the gravity of the display in the supporting frame, the lifting module needs to be lifted and slid up and down by extending into a vertical channel of a stand column vertically arranged on a plate-shaped base and along the stand column, and a sliding rail is arranged in the stand column for smooth lifting, so that the lifting module can be lifted and lowered by being supported and guided along the sliding rail. Because the display is heavier, the gravity of the display needs to be balanced, so that the lifting labor is saved, the display can stop at any height, the use of personnel is convenient, the balance force generating elements are mostly constant force springs, the tension of the springs is basically constant during the stretching process, the springs can be well balanced and matched with the display with constant gravity, and the height position of the display stops at any height during the lifting. Of course, some mechanisms for adjusting the viewing angle of the display are added to the display to be practical. Although these above mentioned devices can meet the basic operation and use requirements, with the development of technology and the aesthetic interest of people, the present day of people increasingly pursues the display lifting support frame with elongated upright posts (the upright posts are elongated and have similar and very small length and width in the cross section of the upright posts), which is a great challenge to the conventional lifting support frame and has great difficulty in implementation.

At present, the display lifting support frame (a screen rotating device of patent number CN200520113037 and a support frame with a folding function of patent number CN200820116539, and an arc display support frame of taiwan application number 104202643N 01) in the prior art is the closest to the present invention, and the structure mainly comprises:

the base is connected with a stand column on the base, the upper part in the stand column is provided with a containing chute, two opposite inner side walls of the containing chute are respectively provided with a ball type sliding rail, and a lifting module which is connected with the two sliding rails and can move up and down relative to the stand column is arranged;

a constant force spring formed by winding an elastic long thin steel sheet, comprising a winding end and a stretching end opposite to the winding end, which are respectively connected with the upright post and the lifting module, wherein the lifting module comprises a lifting sliding piece, a bearing plate and a pitching pivot assembly connected between the lifting sliding piece and the bearing plate; therefore, when the lifting module lifts up and down relative to the upright post, the constant force spring generates corresponding elastic force for balancing the gravity of the display, so that the display can stop at any time, and the lifting operation is light. Of course, besides providing the lifting support function, the display is also provided with a plurality of corresponding mechanisms for adjusting the visual angle function of the display, and the final support frame enables the display to be positioned at a height position and visual angle suitable for the user to view the picture according to the function required by the user.

However, in the prior art, the vertical column has large external dimension seen from the cross section, so that the appearance is thick, the aesthetic requirement of people at present is not met, the design reason of the lifting module is also that the lifting sliding part in the lifting module is of a frame structure with wider left and right directions, two sides of the structure are provided with two wings which are spaced, the two wings are respectively connected with two sliding rails, and the width of the vertical column in the left and right directions is obviously increased due to the frame and the two wings. The cross section shape of the outer rail, the inner rail and the bead frame in each sliding rail is similar to a U shape, the structure is complex, the appearance occupies a larger size, the thickness of the whole sliding rail in the vertical column, especially in the left-right direction, is larger, and then the thickness of the vertical column in the direction is also larger, so that the lifting support frame with the requirement of lengthening the vertical column cannot be met.

In view of the above, a supporting frame capable of solving the above-mentioned drawbacks is provided, which has great demands and development potential in the industry.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and by adopting the structure for improving the upright post and each related part, the external dimension of the cross section of the upright post is greatly reduced, so that the upright post can be installed and used in an elongated upright post, and the display lifting support frame with the especially elongated upright post is provided. In order to achieve the above purpose, the invention is realized by adopting the following scheme:

an elongated upright post type lifting support frame with a pulley, which is used for lifting and supporting a display on a working surface, and is characterized by comprising:

a plate-shaped base arranged on the working surface;

the upper section of the upright post is provided with a containing chute along the longitudinal direction along the surface facing the display;

the two rail grooves with the U-shaped cross sections are respectively fixed on two opposite inner side walls of the accommodating chute in a vertical parallel manner and with the two U-shaped openings opposite to each other;

the lifting module comprises a pitching frame which is approximately U-shaped, a bearing plate fixedly connected to the pitching frame and used for being connected with a display, and a lifting sliding piece which is formed by metal die casting and is approximately plate-shaped and integrated, wherein the front part of the lifting sliding piece is pivoted in the U-shaped opening of the pitching frame through a pivot so that the pitching frame can perform pitching swinging relative to the lifting sliding piece to adjust the visual angle; the two side surfaces of the rear part of the lifting sliding part are respectively fixedly provided with fixed shafts along the axis in the horizontal direction at intervals along the up-down direction, each fixed shaft is pivoted with a rolling bearing, and the rolling bearing is positioned in the U-shaped opening of the rail groove and can roll along the longitudinal direction of the rail groove; each rolling bearing further comprises an outer ring, an inner ring, a plurality of rolling bodies and a retainer corresponding to the plurality of rolling bodies;

a spring receiving member for receiving the spring, the upright posts are fixedly arranged above the tops of the two rail grooves; and

at least one constant force spring which is formed by winding an elastic long thin steel sheet and comprises a winding end and a stretching end opposite to the winding end, wherein the winding end is slidably arranged on the spring accommodating piece and is positioned above the tops of the two rail grooves; the axis of rotation is parallel to the common plane of the two rail grooves and perpendicular to the longitudinal direction of the rail grooves, the stretching end is connected to the lifting sliding piece, and the stretching end moves up and down along the rear wall of the containing chute in a gap formed by the rear wall and one side surface of the outer parts of the two rail grooves;

when the lifting module moves up and down along the guide path of the rail groove, the constant force spring can provide an elastic force for balancing so that the display can stop at any time.

Further, at least one plastic grinding reduction block is arranged on each of the two side surfaces of the lifting sliding piece plate body, and the plastic grinding reduction blocks are abutted against the side edges of the U-shaped opening of the adjacent outer rail and slide up and down.

Further, the steel sheet of the constant force spring is formed by closely compounding two or three similar steel sheets in an integral winding way, so that the elasticity is correspondingly multiplied under the condition that the external dimension of the winding end is not increased much; the spring accommodating part is a plastic part, the upper surface of the spring accommodating part is provided with a concave cambered surface, and the winding end is arranged on the concave cambered surface in a sliding way.

Further, a front cover and an aluminum alloy rear cover are respectively arranged at the front side and the rear side of the upright post and used for covering the upright post, so that the appearance is better, wherein a corresponding long groove is vertically arranged at the upper part of the front cover and used for allowing the lifting sliding piece passing through the long groove to lift up and down; the lower section of the upright post is provided with a threading hole penetrating in the front-back direction, and the front cover and the aluminum alloy rear cover are correspondingly arranged and used for enabling cables of the display to pass through.

Further, the lifting module further comprises an autorotation pivoting assembly which is connected between the pitching frame and the bearing plate, so that the display can swing around an axis vertical to the plate surface of the bearing plate to further adjust the visual angle of the display.

Further, the upright post is a steel plate stamping part or an aluminum alloy die casting part or an aluminum extrusion part along the longitudinal direction, each cross section of the upright post is in a rectangular shape, and the length of the rectangle is smaller than 40 mm, and the width of the rectangle is smaller than 35 mm.

Further, the pivot further comprises two torsion springs sleeved on the pivot and separated at two sides of the lifting sliding piece plate body, and two ends of each torsion spring respectively support against the lifting sliding piece and the pitching frame to balance component force of gravity of the display part.

Further, the fixed force springs are arranged up and down, the spring accommodating part is two rotating shafts with horizontal axes and along the left and right directions, the two fixed force springs are arranged at the top of the upright post and are arranged up and down, the winding ends of the two fixed force springs are respectively sleeved on the two rotating shafts and can slide, and the two stretching ends of the fixed force springs are connected to the lifting sliding part so as to jointly provide balanced elastic force.

Further, the device further comprises a left-right swinging pivot assembly which is connected between the upright post and the base, so that the upright post can swing left and right relative to the working surface.

Further, the lower part of the upright post and the left-right swinging pivot assembly are correspondingly provided with a pair of mutually matched wedge-shaped concave-convex pairs along the vertical direction for tightly and conveniently connecting the two; the device further comprises a manual tightening screw used for manually and quickly assembling and disassembling the bottom of the upright post and the left-right swinging pivot component in the vertical direction.

The invention has the beneficial effects that: the vertical column is lengthened through the reduction of the external dimension seen by the cross section of the vertical column, and for this purpose, the fixed force spring is arranged above the top of the rail groove, the thickness of the vertical direction is thinned through a plate-shaped sliding lifting piece formed by adopting metal die casting, and the rolling bearings are pivoted up and down on the two side surfaces of the rear part of the piece to replace the traditional sliding rail, so that the mechanism for playing the sliding rail function is simpler, the cost is lower, the external dimension is smaller, and the installation is easier; the inner space of the post with the reduced appearance can accommodate related parts, so that the display lifting support frame with the post particularly elongated is provided, and the application range of the lifting support frame is widened.

Drawings

Fig. 1 is an exploded view of the structure of the elongated upright post type lifting support frame with a pulley according to the present invention.

Symbol description

1-rail groove

2 Rolling bearing

3 fixed axle

4 plastic grinding reduction block

6 lifting module

61 lifting slide

611 front part

62 bearing plate

63. Pitching frame

64 pivot

65 torsion spring

66 elastic friction piece

7 stand column

71 accommodating chute cavity

73 front cover

74 rear cover

75 threading hole

8 constant force spring

81 winding part

82 stretching end

88 spring container

9 base

91 pivot assembly.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings, which are incorporated herein by reference.

It should be noted that, the structures, proportions, sizes and the like shown in the drawings are merely used in conjunction with the disclosure of the present specification, and are not intended to limit the applicable limitations of the present invention, so that any modification, variation in proportions, or adjustment of sizes of the structures, proportions, etc. which do not affect the efficacy of the present invention, and which achieve the object, are still within the scope of the disclosure of the present invention. Similarly, it should be noted that terms such as "upper", "lower", "front", "rear", "left", "right" and the like are used in the present specification to refer to the general orientation of the drawings as viewed from the direction of the display screen, and also include terms such as "a" and "an", which are merely for convenience of description, and are not intended to limit the scope of the present invention, and any suitable change or adjustment of the relative relationship thereof, including various modifications and alterations, should be considered as being within the scope of the present invention without substantial technical change.

Referring to fig. 1, the present invention, a lifting support frame of a slim upright 7 type, for lifting and supporting a display (or a display screen, not shown) on a working surface (such as a desktop, not shown), is characterized by comprising:

a plate-shaped base 9 arranged on the working surface;

an elongated columnar column 7 (such as, but not limited to, aluminum alloy die castings, but of course stamping in combination with aluminum die castings; the lower part of the base 9 can be formed by aluminum die casting, the upper half part of the base is formed by aluminum extruded sections, and the upper half part and the base are connected into a whole, and the like), the base 9 is vertically arranged on the base, a containing chute 71 is concavely arranged on the upper section of the upright 7 along the longitudinal direction of the display (for example, a rectangular space which is basically long when seen along the longitudinal direction of the upright 7 is concavely arranged, and the concave arrangement means that a vertical groove which is communicated front and back is formed on the front side surface of the upright 7 and is communicated with the containing chute 71 so that related parts can go up and down through the vertical groove, and the rear wall of the containing chute 71 can be communicated backwards when necessary, but the strength of the upright 7 is reduced);

two U-shaped rail grooves 1 with cross sections are respectively fixed on two opposite inner side walls of the accommodating chute 71 in a vertical parallel manner and with the two U-shaped openings opposite to each other;

a lifting module 6, which further comprises a generally U-shaped pitching frame 63 (for example, a steel plate stamping structure is adopted or a die-casting integrated form is adopted in a top view), a bearing plate 62 fixedly connected to the pitching frame 63 is used for connecting (actually, a hook structure can be made up and down so as to quickly detach the display) a display, a lifting sliding piece 61 formed by metal die casting and generally formed into a plate-shaped integrated piece (for example, an inverted L-shaped plate block integrated piece is seen from left and right directions, an integrated aluminum or zinc alloy die casting forming can be carried out), because the piece is formed into a plate-shaped piece, only one lifting vertical groove is needed for entering the upright post 7, and two side-by-side lifting long grooves are needed for the upright post 7 of a common support frame because the lifting sliding piece is formed into a frame shape and two wings extending into the upright post 7 are adopted, so that the structure is different from the upright post 7), the front 611 of the lifting sliding piece 61 is pivoted in the pitching frame 63 through a pivot 64 (for example, the pivot 64 can be integrally die-cast on the front 611 of the lifting sliding piece 61) by a pivot, the pivot 64 can be pivoted in the U-shaped opening of the pitching frame 63, the lifting sliding piece can be enabled to rotate along with the pivot 64, the pivot 65 can be adjusted along with the pivot angle of the pivot 65, the pivot 65 can be adjusted relatively well, the angle of the lifting sliding piece can be adjusted along with the pivot 65, the tilt window frame can be adjusted relatively to the pivot 65, and the angle can be adjusted relatively well, and the angle can be adjusted relatively to the well known technology can be adjusted, and the window-shaped display can be adjusted, and the like is adjusted, and the window is simultaneously, and the window is required; the two sides of the rear part of the lifting sliding member 61 (for example, the long side of the inverted L-shaped member) are respectively and fixedly provided with a fixed shaft 3 (for example, a step bolt with a section of light cylindrical surface) along the horizontal axis (which is approximately perpendicular to the plate surface of the lifting sliding member 61) at intervals along the up-down direction, each fixed shaft 3 is pivoted with a rolling bearing 2, and the rolling bearing 2 is positioned in the U-shaped opening of the rail groove 1 and can roll along the longitudinal direction of the rail groove 1; each rolling bearing 2 further comprises an outer ring, an inner ring, a plurality of rolling bodies, and a cage corresponding to the plurality of rolling bodies (an elastic friction member 66 is fixedly connected to the rear surface of the lower portion of the lifting sliding member 61 for abutting against the rear wall surface of the accommodating chute 71 to increase suitable friction resistance to further improve lifting feel);

a spring receiving member 88 (for example, a plastic member such as POM or nylon) fixedly arranged (for example, can be fixed by a known manner such as a screw lock or a clamping position) on the upright post 7 above the top of the two rail grooves 1 (the space in the left-right direction can be maximally utilized when arranged at the top of the upright post 7); and

at least one constant force spring 8 (one for this example) is formed by winding an elastic long thin steel sheet (which is formed by a winding process known in the art), the constant force spring 8 comprises a winding end 81 and a stretching end 82 opposite to the winding end 81, and the winding end 81 is slidably arranged on the spring accommodating piece 88 and is above the tops of the two rail grooves 1; the axis of rotation is parallel to the common plane of the two rail grooves 1 and perpendicular to the longitudinal direction of the rail grooves 1 (this can be defined as that the mounting position of the fixed force spring is right-angled with respect to the upright post), the stretching end 82 is connected to the lifting sliding member 61 (for example, the stretching end 82 is provided with Kong Luosuo on the lifting sliding member 61, of course, the stretching end 82 can also be formed into a hook shape, the hooking structure of the corresponding matching between the two can also achieve the effect of fixing the fixed force spring 8 on the lifting sliding member 61 (fixed on the rear face of the lifting sliding member 61), therefore, the connection mode is not limited by this), the stretching end 82 is in a gap formed between the rear wall of the accommodating chute 71 and one side of the two rail grooves 1 (the side face is the side face of the rail groove 1 which is the rear side face; obviously, in doing so, the width of the fixed force spring 8 in the left-right direction can be maximized, that is the spring is the largest, the width of the groove which is close to the left-right direction of the accommodating chute 71 can be the better than the rear wall of the accommodating chute 1 is the rear wall which is the rear-reserved along the rear wall of the rear wall;

(it should be noted that two embodiments may be chosen between the spring receiving member 88 and the constant force spring 8. One embodiment is that the spring receiving member 88 is a shaft provided on the upright 7, a sleeve pivotally mounted on the shaft (preferably made of plastic such as POM or nylon), the winding end 81 of the constant force spring 8 is mounted on the sleeve and rotatable about the shaft axis (when the tension end 82 is pulled), two sides of the winding end 81 may be provided with antifriction stops (preferably made of plastic sheets such as POM or nylon) to prevent the winding end 81 from being worn out to other adjacent members along the shaft axis. The antifriction stops may also be made to have a hole in the middle and be mounted on the shaft, or one of the two antifriction stops may be integrally formed with one end of the sleeve and the other one piece is mounted on the shaft. Obviously, there are many other alternative ways of mounting the second spring receiving member 88 is seen in the related content of the spring receiving member 88, the embodiment is shown in detail in the following figure 1. This embodiment is not limited to this embodiment

When the lifting module 6 moves up and down along the guiding path of the rail groove 1, the constant force spring 8 can provide an elastic force (which is approximately equivalent to the gravity of the display, and is specifically calculated and adjusted according to the conventional method in the industry) for balancing, so that the display can stop (and be stable, because the gravity is basically balanced).

Further, at least one plastic grinding-reducing block 4 is disposed on each of the two sides of the plate body of the lifting sliding member 61 and is abutted against and slides up and down along one side edge of the U-shaped opening of the adjacent outer rail 1 (mainly, the offset and the overturning of the lifting sliding member 61 in the left-right direction are limited, or the lateral force is not large, but needs to be considered in industry, and various methods can actually be used to achieve the same function, for example, the plastic grinding-reducing block 4 can be abutted against the upright post 7 or the member fixedly connected with the upright post only on the surface moving up and down relatively, and the effect is equivalent, or a shallow groove can be disposed on the rail groove 1 corresponding to the width of the outer ring of the rolling bearing 2 in the longitudinal direction, and the bearing can bear a certain lateral force to achieve the offset and overturning prevention in the left-right direction, which is slightly worse.

Further, the steel sheet of the constant force spring 8 is formed by integrally winding two or three pieces of substantially similar steel sheets in a closely adhered and compounded manner (for example, the two pieces of steel sheets are compounded, the width, the thickness, the appearance and the like of the several pieces of steel sheets are generally the same, the appearance after forming is always similar to that of one piece of steel sheet wound, and for this reason, the formed constant force spring is still regarded as one constant force spring 8 in number, so that the elasticity is correspondingly multiplied under the condition that the external dimension of the winding end 81 is increased slightly; the spring accommodating member 88 is a plastic member (in this example, POM is directly fixed on the top of the upright post 7), the upper surface of the spring accommodating member 88 has a concave arc surface, the winding end 81 slides to the ground (so that useful friction force is generated between the winding end and the winding end due to the elastic contact of the surface and sliding, lifting feel can be improved, the magnitude of the friction force value is proper, and grease can be added if necessary) to be arranged on the concave arc surface.

Further, a front cover 73 (in this example, the front cover 73 is a plastic piece) and an aluminum alloy rear cover 74 are respectively provided on the front side and the rear side of the upright post 7 (which can be fastened by a plurality of known methods such as mutual fastening, etc.) for covering the upright post 7, so as to make the appearance better, wherein a corresponding long groove is vertically provided on the upper portion of the front cover 73 for the lifting sliding member 61 passing through the long groove to be able to lift up and down; the lower section of the upright post 7 is provided with a threading hole 75 penetrating in the front-rear direction, and the front cover 73 and the aluminum alloy rear cover 74 are correspondingly arranged for the cable of the display to pass through.

Further, the lifting module 6 further comprises a self-rotation pivoting assembly connected between the pitching frame 63 and the supporting plate 62, so that the display can swing around an axis perpendicular to the surface of the supporting plate 62 to further adjust the viewing angle of the display (the structure of two parts to be mutually swung is pivoted through a shaft so as to be convenient for a user to adjust and view the display picture in a required mode, obviously, if the function is not required, part of the parts can be removed or two parts to be mutually swung can be directly locked through a screw lock).

Further, the upright 7 is a steel plate stamping or an aluminum alloy die casting or an aluminum extrusion in the longitudinal direction, and each cross-sectional profile of the upright 7 is generally rectangular, and the length of the rectangle is less than 40 mm, and the width of the rectangle is less than 35 mm (which is a relatively favorable choice for the practical situation of each piece).

Further, the pivot 64 further includes two torsion springs 65 sleeved on the pivot 64 and separately disposed on two sides of the plate body of the lifting sliding member 61, and two ends of each torsion spring 65 respectively support against the lifting sliding member 61 and the pitching frame 63 to balance the component force of the gravity of the display part (a friction assembly for pressing the two opposite swinging members to generate a friction resistance moment is additionally provided along the pivot 64 according to the known technology in the industry, so as to better balance the forward tilting moment generated by the gravity of the display screen, and make the screen angle stop along with and stable and improve the adjustment hand feeling).

Further (not shown in the drawings), the fixed force springs 8 are arranged up and down (for example, when the display is heavier, the shape of a single fixed force spring 8 is too large, the total resultant force can meet the requirement by adopting the arrangement of the upper and lower fixed force springs, meanwhile, the size of the springs is not too large so as not to influence the installation in the elongated upright post 7), the spring accommodating part is two rotating shafts with horizontal axes and along the left and right directions, and is arranged at the top of the upright post (for example, two ends of the rotating shafts are arranged on two opposite wall surfaces of the accommodating groove, and note that two sliding rails are arranged below the rotating shafts so as to enlarge the size of the fixed force springs in the left and right directions to improve the elasticity), the winding ends of the two fixed force springs are respectively sleeved on the two rotating shafts and can slide (the rotating shafts are preferably sleeved with antifriction plastic sleeves to reduce friction resistance), and the two stretching ends of the fixed force springs are connected to the lifting sliding parts so as to jointly provide balanced elastic force.

Further, a pivot assembly 91 is provided between the upright 7 and the base 9, so that the upright 7 can pivot relative to the working surface.

Further, a pair of mutually matched wedge-shaped concave-convex pairs (only the wedge-shaped convex pairs arranged on the base 1 are shown in the drawing) are correspondingly arranged at the lower part of the upright post 7 and the left-right swing pivot assembly 91 for tight and convenient connection; further comprises a manual tightening screw (not shown in the drawings, for tightening and loosening the wedge-shaped concave-convex in the vertical direction) for manual quick assembly and disassembly in the vertical direction between the bottom of the upright post 7 and the left-right swing pivot assembly 91.

It should be noted that, in order to clearly show the main structure and connection relationship, some components such as the rotation pivot component, the left-right swing pivot component 91, etc. are omitted, and those skilled in the art should easily understand the structure of the present embodiment through the foregoing description.

In summary, the vertical column type lifting support with the pulley is lengthened through reducing the external dimension seen by the cross section of the vertical column 7, after the vertical column 7 is lengthened, the width of the fixed force spring 8 in the left and right direction is maximized through arranging the fixed force spring 8 above the top of the rail groove 1, the space dimension occupied in the left and right direction is reduced through adopting the plate-shaped lifting sliding piece 61 formed by metal die casting, the thickness in the left and right direction is correspondingly reduced by adopting the rolling bearing 2 to roll in the rail groove 1 instead of the traditional sliding rail, the mechanism is simplified, the cost is reduced, the installation is simpler, the internal space of the vertical column 7 after the external dimension is reduced can accommodate related parts, and therefore, the display lifting support with the special lengthened vertical column is provided, the modeling of the display lifting support has very strong characteristics and aesthetic feeling, meets the new aesthetic requirements of people, the application range of the lifting support is greatly expanded, meanwhile, the volume of the vertical column is reduced from the outside, the consumption of materials is reduced, and the environment is protected.

The invention is particularly worth mentioning that the invention has carried on the great improvement to the traditional slide rail, through adopting the upper and lower pivot of both sides of the back part of the plate-shaped sliding lifting piece formed by metal die casting to set up the antifriction bearing to replace the traditional slide rail, make the mechanism to play the function of slide rail simpler, the cost is lower, the overall dimension is smaller, it is easier to install, it is also broken through the structure that the existing technology rolls in the rail groove with the plastic wheel or steel wheel instead of antifriction bearing, antifriction bearing rolling resistance is small, the performance is stable, the precision is very durable, it is insensitive to its deformation of temperature, it is apt to cause the great expansion and contraction to influence the elasticity fit in the rail groove like the plastic gyro wheel, it is very easy to cause the lift to have gap feeling or seize feeling to fit the clearance requirement, especially its life is short, the time is long can creep deformation form the polygonal wheel and influence the rolling smoothness, and also because there is no rolling body to make rolling resistance great; for the common metal wheel, the rolling lifting is unsmooth due to no rolling body, the resistance is unstable, the requirement on the fit clearance is high, and the like.

The foregoing description of the preferred embodiments of the present invention is provided for the purpose of illustration only and is not intended to limit the scope of the invention, as the invention is not limited to the specific embodiments disclosed, but is to be accorded the full scope of the invention as defined by the following claims.

Claims (5)

1. An elongated upright post type lifting support frame with a pulley, which is used for lifting and supporting a display on a working surface, and is characterized by comprising:

a plate-shaped base arranged on the working surface;

the upper section of the upright post is provided with a containing chute along the longitudinal direction along the surface facing the display; the length dimension and the width dimension of the cross section of the elongated upright post are similar;

the two cross sections are U-shaped rail grooves, two U-shaped openings are respectively fixed on two opposite inner side walls of the containing chute in a vertical parallel manner and opposite to each other;

the lifting module comprises a pitching frame which is approximately U-shaped, a bearing plate fixedly connected to the pitching frame and used for being connected with a display, and a lifting sliding piece which is formed by metal die casting and is approximately plate-shaped and integrated, wherein the front part of the lifting sliding piece is pivoted in the U-shaped opening of the pitching frame through a pivot so that the pitching frame can perform pitching swinging relative to the lifting sliding piece to adjust the visual angle; the two side surfaces of the rear part of the lifting sliding part are respectively fixedly provided with fixed shafts along the axis in the horizontal direction at intervals along the up-down direction, each fixed shaft is pivoted with a rolling bearing, and the rolling bearing is positioned in the U-shaped opening of the rail groove and can roll along the longitudinal direction of the rail groove; each rolling bearing further comprises an outer ring, an inner ring, a plurality of rolling bodies and a retainer corresponding to the plurality of rolling bodies;

the spring accommodating piece is fixedly arranged on the upright posts above the tops of the two rail grooves; and

at least one constant force spring which is formed by winding an elastic long thin steel sheet and comprises a winding end and a stretching end opposite to the winding end, wherein the winding end is slidably arranged on the spring accommodating piece and is positioned above the tops of the two rail grooves; the rotation axis is parallel to the common plane of the two rail grooves and perpendicular to the longitudinal direction of the rail grooves, the stretching end is connected to the lifting sliding piece, and the stretching end moves up and down along the rear wall of the containing chute in a gap formed between the rear wall and one side surface of the outer parts of the two rail grooves;

when the lifting module moves up and down along the rail groove guide path, the constant force spring can provide an elastic force for balancing so that the display can stop at any time;

at least one plastic grinding reduction block is arranged on each side face of the lifting sliding piece plate body, and is abutted against one side edge of the U-shaped opening of the adjacent rail groove and slides up and down;

the pivot shaft further comprises two torsion springs sleeved on the pivot shaft and respectively arranged at two sides of the lifting sliding piece plate body, and two ends of each torsion spring respectively support against the lifting sliding piece and the pitching frame to balance the component force of partial gravity of the display;

the fixed force springs are arranged up and down, the spring accommodating parts are two rotating shafts with horizontal axes and along the left and right directions, the two rotating shafts are arranged at the top of the upright post and are arranged up and down, the winding ends of the two fixed force springs are respectively sleeved on the two rotating shafts and can slide, and the two stretching ends of the two fixed force springs are connected to the lifting sliding parts so as to jointly provide balanced elastic force;

the device further comprises a left-right swinging pivot component which is connected between the upright post and the base, so that the upright post can swing left and right relative to the working surface;

the lower part of the upright post and the left-right swing pivot assembly are correspondingly provided with a pair of mutually matched wedge-shaped concave-convex pairs along the vertical direction for tightly and conveniently connecting the two; the device further comprises a manual tightening screw used for manually and quickly assembling and disassembling the bottom of the upright post and the left-right swinging pivot component in the vertical direction.

2. The elongated upright lift frame with sled of claim 1 wherein said steel sheet of said constant force spring is formed by two or three substantially similar steel sheets integrally wound in close proximity to each other to increase the spring force in response to a corresponding multiple increase in the overall dimension of the wound end; the spring accommodating part is a plastic part, the upper surface of the spring accommodating part is provided with a concave cambered surface, and the winding end is arranged on the concave cambered surface in a sliding way.

3. The elongated upright lifting support with a pulley according to claim 1, wherein the front and rear sides of the upright are respectively provided with a front cover and an aluminum alloy rear cover for covering the upright, the appearance is better, wherein the upper part of the front cover is vertically provided with a corresponding long groove for the lifting sliding piece passing through the long groove to lift up and down; the lower section of the upright post is provided with a threading hole penetrating in the front-back direction, and the front cover and the aluminum alloy rear cover are correspondingly arranged and used for enabling cables of the display to pass through.

4. The elongated upright lift frame with sled of claim 1 wherein the lift module further comprises a self-rotating pivot assembly disposed between the tilt frame and the receiving plate for enabling the display to pivot about an axis perpendicular to the plane of the receiving plate for further adjustment of the viewing angle of the display.

5. An elongated upright lift support with sled of claim 1 wherein the upright is a steel sheet stamping or aluminum alloy die cast or longitudinal aluminum extrusion, each cross-sectional profile of the upright is generally rectangular, the rectangle having a length of less than 40 mm and a width of less than 35 mm.