CN111853487A - Support frame, base and display device - Google Patents
Support frame, base and display device Download PDFInfo
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- CN111853487A CN111853487A CN202010740081.4A CN202010740081A CN111853487A CN 111853487 A CN111853487 A CN 111853487A CN 202010740081 A CN202010740081 A CN 202010740081A CN 111853487 A CN111853487 A CN 111853487A
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- supporting leg
- leg
- legs
- stress control
- base
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
Abstract
According to the support frame, the base and the display device, the display device comprises a display and the base, the base comprises at least two groups of support frames, and each group of support frames comprises a connecting mechanism and support legs; the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped; the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg; the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape. This application takes place failure fracture control with the base in stress control valve department for the complete machine topples to the direction of expectation, reduces the personnel's safety risk that the base became invalid and brings, with the stress control valve design inside the base, under the prerequisite of guaranteeing the function, also remains the aesthetic feeling of outside lines.
Description
Technical Field
The application relates to the technical field of equipment installation, and relates to a support frame, a base and display equipment.
Background
The base plays a role in supporting the television, and not only the appearance is required, but also the safety is required; metal material's base, for example die-casting aluminium material etc. because of the material intensity is high, and elastic modulus is big, and the security is relatively better, by the wide application, but metal base weight is big, and the cost is expensive, therefore more and more enterprises adopt plastic base to replace metal base. The plastic base has rich shapes, various appearance treatment processes and light weight, the cost is only about 40 percent of that of a metal base, the most common material of the plastic base at present is PC + ABS-GF15, and the plastic base also has PA6-GF30 with better performance from manufacturers.
However, the plastic base has safety problems, which cause many factors of the safety problems of the plastic base, and mainly includes the following points: firstly, when the plastic base is made of selected materials, the materials with high mechanical property indexes are adopted as much as possible to increase the safety threshold, but the mechanical property of the plastic base is greatly different from that of a metal material, certain risks exist in safe use, secondly, the plastic materials have poor tolerance to edible oil and some clean organic solvents and the like, some plastic materials can generate obvious performance attenuation under the high-temperature and high-humidity environment, and meanwhile, the plastic materials generally have creep risks.
The base made of the plastic material is lower in strength than the base made of the metal material, and risks such as creep deformation, performance weakening or failure exist, potential safety hazards are generated, if the base fails and breaks, the television can overturn, safety accidents can be caused due to unpredictable and uncontrollable overturning directions, or other properties can be damaged, as shown in fig. 1, the breaking occurs on the front supporting leg, the television complete machine can tip over to the audience side, and unpredictable safety problems can be caused to personnel or properties.
Disclosure of Invention
The application provides a support frame, base and display device to when solving the base and taking place the inefficacy fracture, the TV set direction of toppling is unpredictable, and uncontrollable technical problem.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, there is provided a support stand comprising:
the support frames comprise at least two groups, and each group of support frames comprise a connecting mechanism and support legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
Further, the stress control valve is arranged on the inner side of the U-shaped support leg to form an annular groove.
Further, the U-shaped inner side of the supporting leg further comprises a supporting rod and a plurality of cavity brackets; the supporting rod is arranged along the length direction of the supporting leg; the plurality of cavity holders are distributed on the support bar.
Still further, the cavity support distribution density at the junction of the front leg and the rear leg is greater than the cavity support distribution density elsewhere on the front leg and/or the rear leg.
Furthermore, the connecting mechanism comprises at least one positioning protrusion and at least one positioning hole, the positioning protrusion is located at the top of the connecting mechanism, the positioning holes are located on two sides of the positioning protrusion, and the positioning holes are located in the direction perpendicular to the length direction of the supporting leg.
Further, the front leg and the rear leg are integrally formed.
Further, the longitudinal section of the supporting leg is of a human shape.
In a second aspect, there is provided a base comprising:
the support frames comprise at least two groups, and each group of support frames comprise a connecting mechanism and support legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
Further, the stress control valve is arranged on the inner side of the U-shaped support leg to form an annular groove.
In a third aspect, a display device is provided, comprising a display, a base;
the base comprises at least two groups of supporting frames, and each group of supporting frames comprises a connecting mechanism and supporting legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, the cross sections of the supporting legs are U-shaped, and the stress control valves are arranged on the inner sides of the U-shaped supporting legs to form annular grooves;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
According to the support frame, the base and the display device, the display device comprises a display and the base, the base comprises at least two groups of support frames, and each group of support frames comprises a connecting mechanism and support legs; the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped; the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg; the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape. This application takes place failure fracture control with the base in stress control valve department for the complete machine topples to the direction of expectation, reduces the personnel's safety risk that the base became invalid and brings, with the stress control valve design inside the base, under the prerequisite of guaranteeing the function, also remains the aesthetic feeling of outside lines.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a prior art base with a front leg broken;
FIG. 2 is a schematic view of a rear leg of a conventional base in a broken state;
FIG. 3 is a structural diagram of a supporting frame according to an embodiment of the present disclosure;
FIG. 4 is a bottom view of a support stand according to an embodiment of the present application;
FIG. 5 is an enlarged view of portion A of FIG. 4 of the present application;
FIG. 6 is a schematic diagram of a support frame simplified into a simply supported beam according to an embodiment of the present disclosure;
FIG. 7 is a moment diagram of the simply supported beam of FIG. 6 of the present application;
FIG. 8 is a force analysis diagram of a support according to an embodiment of the present disclosure;
FIG. 9 illustrates the position of a support frame and the span of front and rear legs according to an embodiment of the present application;
FIG. 10 is a cross-sectional view taken along line B-B of FIG. 8 of the present application;
FIG. 11 is a graph illustrating a variation of curvature of a groove arc of a stress control valve of a support according to an embodiment of the present disclosure;
wherein: 1-a support leg; 2-a connection mechanism; 11-front leg; 12-rear leg support; 13-a stress control valve; 14-a support bar; 15-a cavity holder; 16-the junction of the front leg and the rear leg; 3-area of maximum tensile stress; f-load; m-moment value; l-the span of the front leg and the rear leg; t-workpiece wall thickness; h-section height; k-section width; the X-stress controls the valve position.
Detailed Description
The most commonly used material for injection molded bases is PC + ABS-GF15, and manufacturers have begun to use the better performance PA6-GF30, which are engineering grade plastics with high performance, but have a large difference from the commonly used material for metal bases such as die cast aluminum, as shown in the following table:
the plastic base is fixed to the whole television through the connecting piece, the whole television is supported through the supporting legs, when the base fails, the base generally breaks at the position with the largest stress, and the base with the common design can not determine the specific breaking position and can only be roughly framed in an area with relatively larger stress.
The present application is described in further detail below with reference to the attached drawing figures:
the embodiment of the application provides a support frame, and as shown in fig. 3-5, each support frame comprises a connecting mechanism and a support leg, each support leg comprises a front support leg, a rear support leg and a stress control valve, the cross section of each support leg is U-shaped, and the longitudinal section of each support leg is human-shaped; the front supporting leg is connected with the rear supporting leg, and the front supporting leg and the rear supporting leg are integrally formed through injection molding; the connecting mechanism is arranged at the connecting position of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending position of the supporting legs.
The stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
The stress control valve is arranged on the inner side of the U-shaped supporting leg to form an annular groove. The U-shaped inner side of the supporting leg further comprises a supporting rod and a plurality of cavity brackets; the supporting rod is arranged along the length direction of the supporting leg; the plurality of cavity holders are distributed on the support bar.
The distribution density of the cavity support at the junction of the front leg and the rear leg is greater than the distribution density of the cavity support elsewhere on the front leg and/or the rear leg.
The connecting mechanism comprises a positioning bulge and two positioning holes, the positioning bulge is positioned at the top of the connecting mechanism, the positioning holes are positioned on two sides of the positioning bulge, and the positioning holes are positioned in the direction perpendicular to the length direction of the supporting leg.
Referring to fig. 6, the stress of the base is mainly the load generated by the self-weight of the television (as shown in fig. 6-a), and according to the stress characteristic of the base, the stress model can be simulated into a simple beam structure (as shown in fig. 6-b); analyzing the simply supported beam structure, drawing a bending moment diagram of the simply supported beam structure as shown in fig. 7, and finding that the bending moment near the load application point is the maximum, so that the maximum stress position can be deduced to be a certain position of the area near the load application point, and the specific position has probability discrete distribution due to manufacturing and assembling errors, which can cause the unpredictable position of the failure and fracture of the base, and increase the potential safety hazard; further analyzing the stress state of the base, and finding that the stress characteristic near the load application point of the base is not only compressive stress but also tensile stress, and the tensile stress is the main stress causing failure.
Through the analysis, the position of the stress control valve designed by the application is shown in fig. 8, the stress control valve is arranged in the maximum tensile stress area corresponding to the connection part of the front supporting leg and the rear supporting leg and is partially arranged in the range of the rear supporting leg, and the design of the thought is given through the following method:
first, the load and position borne by the base and the span between the front leg and the rear leg are determined, and as shown in fig. 9, the load is F, the span between the front leg and the rear leg is L, and the position a and the position b are L-a.
Secondly, determining a maximum torque value:
in the formula, MmaxRepresenting the maximum torque value.
Thirdly, determining the safety coefficient and the allowable stress, wherein the tensile strength of the base material is sigmabAnd the influence on the safety factor of the base is n,determining allowable stress:
in the formula, [ sigma ] represents an allowable stress.
Fourthly, determining the coordinate distance from the section moment of inertia and the maximum tensile stress to the moment of inertia, wherein the section shape is shown in figure 10, the section width is K, the section height is H, the section moment of inertia is the section shape attribute of the rear support leg of the base, and the moment of inertia I of the section at the maximum moment position (near the load) is consideredxAnd the coordinate distance y from the maximum tensile stress to the moment of inertiamax。
Fifthly, checking the maximum tensile stress:
in the formula, σmaxRepresents the maximum stress value, σmax<[σ]。
The position of the maximum tensile stress is near the load, and the position is discretely distributed in a certain range due to the influence of practical factors and cannot be determined. Therefore, it is necessary to fix the maximum tensile stress to a certain position, thereby controlling the fracture position at the time of failure. The stress control valve is arranged at a determined position, the sudden change of the shape of the continuous surface is obtained according to knowledge of material mechanics, the local stress is increased rapidly, stress concentration is generated, and by utilizing the principle, a groove which generates the stress concentration is added at the position, close to a load, of the rear supporting leg of the base to serve as the stress control valve.
Stress sigma 'at stress control valve'maxThe maximum tensile stress sigma calculated in the fifth stepmaxThe ratio of which is called the stress concentration coefficient ktCoefficient of stress concentration ktThe groove depth h, the groove arc curvature rho and the wall thickness t of the workpiece are related, the wall thickness t of the workpiece is not easy to change, and the stress concentration coefficient is expressed by the following simplified formula:
where C represents a quantity related to the groove form of the stress control valve, referring to FIG. 11, the stress concentration coefficient k is increased as the groove becomes sharper, i.e., the groove arc curvature ρ → 0t→ infinity, so to properly adjust the curvature and depth of the groove arc, stress σ 'at the stress control valve'maxIn a proper range, σ is satisfiedmax<σ′max<[σ]Under the assurance safety prerequisite, realize the design objective of this application, when the base takes place to become invalid the fracture, the fracture position when control became invalid for the TV set topples according to the direction of envision.
And (3) checking the test piece: k is obtained by adjusting the depth h of the groove and the curvature rho of the arc of the groovetSo that
σ′max＝kt*σmax
So sigma'maxSatisfy sigmamax<σ′max<[σ]The stress control valve is designed by utilizing the stress concentration principle at a desired position, the stress of the stress control valve is higher than the stress of other positions of the base and lower than allowable stress, the design safety is ensured, and when the base is failed and broken, the broken position when the base is failed is controlled, so that the television is overturned according to an expected direction, and the personnel safety risk caused by failure is reduced to the maximum extent.
Taking a certain base as an example, combining the design ideas:
in the first step, the load F of a certain base is obtained as 175N, the span L between the front leg and the rear leg is 360mm, the position a is 200mm, and the position b is L-a is 160 mm.
Second step, maximum moment value
Thirdly, selecting PA6-GF30 with better comprehensive performance and tensile strength sigma from the base materialb175Mpa, because the safety factor affecting the base is more, and the safety factor n is 6, the allowable stress is
Fourthly, the section width K is 20mm, the section height H is 40mm, the calculation of the moment of inertia of the section at the maximum moment position (near the load) is complex, the key point is not explained in the application, the calculation process is omitted, and the moment of inertia I of the section at the maximum moment position (near the load) is obtained through calculationx＝5.17E4mm4And the coordinate distance y from the maximum tensile stress to the moment of inertiamax＝22.6mm。
Fifth step, maximum tensile stress
The position of the maximum tensile stress is in a maximum tensile stress area corresponding to the load, and the positions are discretely distributed in a certain range due to the influence of practical factors and cannot be determined, so that the maximum tensile stress needs to be fixed to a determined position, the fracture position in failure is further controlled, and the stress sigma 'at the stress control valve is controlled'maxThe maximum tensile stress sigma calculated in the fifth stepmaxThe ratio of which is called the stress concentration coefficient ktCoefficient of stress concentration ktThe groove depth h, the groove arc curvature rho and the wall thickness t of the product are related, the wall thickness t of the product is not easy to change, and the groove arc curvature and the depth and the stress sigma 'at the stress control valve are required to be properly adjusted'maxIn a proper range, σ is satisfiedmax<σ′max<[σ]By adjusting the depth h and the arc curvature rho of the groove and the shape of the groove of the stress control valve designed by the example is approximate to an ellipse C which is approximately equal to 2, k is enabled to be approximately equal to 2t2 to obtain σ'max＝kt*σmax＝2*6.8＝13.6Mpa<[σ]Compliance with stress at stress control valve σ'maxSatisfy sigmamax<σ′max<[σ]。
In the above, by taking a certain type of base as an example, a stress concentration principle is utilized to design a stress control valve at a desired position, and the stress of the stress control valve is higher than the stress at other positions and is twice of the original maximum stress and lower than the allowable stress, so that the safety of base design is ensured.
In order to ensure the appearance integrity of the base, the stress control valve is arranged at the inner side of the cavity part of the rear supporting leg to form an annular groove, so that the consistency of the base is kept, the abrupt feeling caused by the sudden groove damage of a streamline line is avoided, and the appearance quality of the base is kept.
By utilizing the stress concentration principle of mechanics and through the arrangement of the structural stress control valve, the size and the position of the maximum tensile stress of the base are controlled, and when the base fails and is fractured, the fractured position of the base and the toppling direction of the whole machine can be controlled, so that the use safety of the base is improved.
The support frame provided by the embodiment of the application comprises a connecting mechanism and supporting legs; the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped; the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg; the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape. This application support frame will take place inefficacy fracture control in stress control valve department for the complete machine topples to the anticipated direction, reduces the personnel's safety risk that the base became invalid and brings, with the stress control valve design inside the base, under the prerequisite of guaranteeing the function, also remains the aesthetic feeling of outside lines.
Embodiments also provide a base, comprising: the support frames comprise at least two groups, and each group of support frames comprise a connecting mechanism and support legs; the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, the cross sections of the supporting legs are U-shaped, and the stress control valves are arranged on the inner sides of the U-shaped supporting legs to form annular grooves; the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg; the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape. The base of the application is to be controlled at the stress control valve in a failure mode, so that the whole machine overturns in the expected direction, the safety risk of personnel caused by failure of the base is reduced, the stress control valve is designed inside the base, and the aesthetic feeling of external lines is kept on the premise of ensuring the function.
The embodiment also provides a display device, which comprises a display and a base; the base comprises at least two groups of supporting frames, and each group of supporting frames comprises a connecting mechanism and supporting legs; the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, the cross sections of the supporting legs are U-shaped, and the stress control valves are arranged on the inner sides of the U-shaped supporting legs to form annular grooves; the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg; the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape. Referring to fig. 2, when the fracture occurs at a certain position of the rear supporting leg, the whole machine is tilted backwards, at least two groups of supporting frames are arranged, the display device controls the stress control valve to perform failure fracture, so that the whole machine is tilted in an expected direction, the safety risk of personnel caused by the failure of the base is reduced, the stress control valve is designed inside the base, and the aesthetic feeling of external lines is kept on the premise of ensuring the functions.
The above-mentioned contents are only for explaining the technical idea of the present application, and the protection scope of the present application is not limited thereby, and any modification made on the basis of the technical idea presented in the present application falls within the protection scope of the claims of the present application.
Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments have been discussed in the foregoing disclosure by way of example, it should be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although the system components described above may be implemented by hardware devices, they may also be implemented by software-only solutions, such as installing the described system on an existing server or mobile device.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
The entire contents of each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, are hereby incorporated by reference into this application. Except where the application is filed in a manner inconsistent or contrary to the present disclosure, and except where the claim is filed in its broadest scope (whether present or later appended to the application) as well. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the statements and/or uses of the present application in the material attached to this application.
Claims (10)
1. A support frame is characterized by comprising a connecting mechanism and support legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
2. A support as claimed in claim 1, wherein the stress control valve is located on the inside of the U-shape of the leg, forming an annular recess.
3. A support as claimed in claim 1, wherein the U-shaped inner side of the legs further comprises a support bar, a plurality of cavity brackets;
the supporting rod is arranged along the length direction of the supporting leg;
the plurality of cavity holders are distributed on the support bar.
4. A support according to claim 3 wherein the cavity cradle density at the junction of the front leg and the rear leg is greater than the cavity cradle density elsewhere on the front leg and/or the rear leg.
5. The support frame of claim 1, wherein the connecting mechanism comprises at least one positioning protrusion and at least one positioning hole, the positioning protrusion is located on the top of the connecting mechanism, the positioning hole is located on both sides of the positioning protrusion, and the positioning hole is located perpendicular to the length direction of the leg.
6. A support as claimed in claim 1, wherein said front leg and said rear leg are integrally formed.
7. A support as claimed in claim 1, wherein the legs are of human-shaped longitudinal cross-section.
8. A base, comprising:
the support frames comprise at least two groups, and each group of support frames comprise a connecting mechanism and support legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, and the cross sections of the supporting legs are U-shaped;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
9. A seat according to claim 8, wherein said stress control valve is located inside the U-shape of said leg, forming an annular groove.
10. The display equipment is characterized by comprising a display and a base;
the base comprises at least two groups of supporting frames, and each group of supporting frames comprises a connecting mechanism and supporting legs;
the supporting legs comprise front supporting legs, rear supporting legs and stress control valves, the cross sections of the supporting legs are U-shaped, and the stress control valves are arranged on the inner sides of the U-shaped supporting legs to form annular grooves;
the front supporting leg is connected with the rear supporting leg, and the connecting mechanism is arranged at the connecting part of the front supporting leg and the rear supporting leg and at the U-shaped outer side bending part of the supporting leg;
the stress control valve is arranged in the maximum tensile stress area of the supporting leg and in the range of the rear supporting leg, the maximum tensile stress area of the supporting leg is the joint of the front supporting leg and the rear supporting leg, and the stress control valve is in a groove shape.
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| CN201344346Y (en) * | 2009-01-22 | 2009-11-11 | 徐文雷 | Tripod |
| EP2278207A2 (en) * | 2009-07-23 | 2011-01-26 | Funai Electric Co., Ltd. | Stand mounting structure and rear cabinet |
| CN201764217U (en) * | 2010-09-10 | 2011-03-16 | 青岛海信电器股份有限公司 | TV base and TV employing the same |
| CN208750338U (en) * | 2018-09-11 | 2019-04-16 | 湖南捷创新材料有限公司 | A kind of pedestal of color flow effect |
| CN111425732A (en) * | 2020-03-27 | 2020-07-17 | 海信视像科技股份有限公司 | Base for television and television |
| CN111331775A (en) * | 2020-04-07 | 2020-06-26 | 海信视像科技股份有限公司 | Television base, manufacturing method thereof and television |
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| CN111853487B (en) | 2022-02-15 |
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