Table frame structure

Abstract

The utility model discloses a table frame structure which comprises a table top plate and supporting legs arranged below the two sides of the table top plate, and half-bridge sensors are further arranged between the two supporting legs and the table top plate. The half-bridge sensor comprises a force-sensitive elastic element mounted on the bottom surface of the desktop top plate, a strain gauge attached to the bottom surface of the force-sensitive elastic element, and a wire electrically connected with the output end of the strain gauge; the force-sensitive elastic element is provided with a first partition groove and a second partition groove which are oppositely arranged, and the center of the first partition groove and the center of the second partition groove abut against the supporting foot. According to the utility model, the half-bridge sensor structure with the double-layer partition groove is adopted, and the half-bridge sensor is arranged between the desktop top plate and the supporting legs, so that the half-bridge sensor can sense the pressure on the desktop top plate in real time, and the stress of the desk can be adjusted according to the sensing result.

Description

Technical Field

[0001] The utility model relates to the technical field of desktop top plates, in particular to a desktop frame structure. Background Art

[0002] In recent years, electric lift tables have become very popular abroad, and more and more people in China are paying attention to the harm caused by long-term sitting. They are mainly driven by motors and controller systems, and the desktop is raised and lowered by screw rods. The general lifting range is 60cm-125cm. Electric lift tables can help users to stand and sit alternately for office work, which can better protect the user's spine and reduce the user's fatigue in actual work. At the same time, in the field of children's tables, as children grow taller, a table that can change height can better meet the needs of children.

[0003] When using an electric lifting table, especially when the system motor drives the lead screw to run automatically, if the desktop hits something, such as a cabinet under the desktop, a window above the desktop, etc., it will generate relatively large pressure and damage the items. At the same time, when the weight of the desktop exceeds the rated load, the transmission system of the table will also be damaged.

[0004] A sensor is added between the table frame and the table top. When the table top hits something, it detects the pressure between the table top and the table frame, thereby identifying the collision between the table top and the outside world to provide protection. At the same time, when a corner of the lifting table top comes into contact with the outside world, causing the table top to tilt unevenly, it is easy to cause overload damage to the table top and the lifting device. Utility Model Content

[0005] The utility model aims to provide a table frame structure in order to solve the problem that the pressure between the table top and the table frame cannot be accurately and real-time identified.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A table frame structure, comprising a table top plate and legs arranged below the two sides of the table top plate, and a half-bridge sensor is arranged between the two legs and the table top plate;

[0008] The half-bridge sensor comprises a force-sensitive elastic element mounted on the bottom surface of the desktop top plate, a strain gauge attached to the bottom surface of the force-sensitive elastic element, and a wire electrically connected to the output end of the strain gauge;

[0009] The force-sensitive elastic element is provided with a first partition groove and a second partition groove which are arranged opposite to each other, and the centers of the first partition groove and the second partition groove are abutted against the supporting legs for installation.

[0010] As a further description of the above technical solution:

[0011] The edges of the force-sensitive elastic element are all provided with mounting holes corresponding to the bottom surface of the desktop top plate, a through hole is provided at the center of the force-sensitive elastic element, and an extension shaft is provided on the support leg to be plugged into the through hole.

[0012] As a further description of the above technical solution:

[0013] The first partition groove and the second partition groove are both configured as annular grooves with one side open, the first partition groove is configured inside the second partition groove, and the first partition groove and the second partition groove are both configured in the area between the through hole and the mounting hole.

[0014] As a further description of the above technical solution:

[0015] The inner contour of the strain gauge fits with the outer contour of the first partition groove, and the two sides of the outer contour of the strain gauge fit with the two sides of the inner contour of the second partition groove.

[0016] As a further description of the above technical solution:

[0017] The top plate of the desktop is provided with an inner groove which is concave toward the top plate of the desktop to match the area between the first partition groove and the second partition groove.

[0018] As a further description of the above technical solution:

[0019] Baffles extending obliquely downward are arranged at both ends of the desktop top plate, and the two half-bridge sensors are arranged in the area between the two baffles.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. In the utility model, a half-bridge sensor structure with a double-layer partition groove is adopted. Since the half-bridge sensor is arranged between the top plate of the desktop and the supporting leg, the half-angle sensor can sense the pressure on the top plate of the desktop in real time, so as to adjust the force on the table according to the sensing result; and since two first partition grooves and second partition grooves arranged in opposite directions are adopted in the force-sensitive elastic element, the contact area between the force-sensitive elastic element and the supporting leg is always kept horizontal, avoiding the tilt of the contact area due to compression deformation, thereby increasing the measurement accuracy of the half-bridge sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a three-dimensional structure provided according to an embodiment of the utility model is shown;

[0023] Figure 2 An exploded view of a three-dimensional structure provided according to an embodiment of the utility model is shown;

[0024] Figure 3An exploded view of a three-dimensional bottom-up structure provided according to an embodiment of the utility model is shown;

[0025] Figure 4 The embodiment provided according to the utility model is shown Figure 3 Enlarged structural diagram at A in the middle.

[0026] Legend:

[0027] 1. Desktop top plate; 11. Baffle; 12. Inner groove;

[0028] 2. half-bridge sensor; 21. force-sensitive elastic element; 211. through hole; 212. first partition groove; 213. second partition groove; 22. strain gauge; 23. wire;

[0029] 3. Support legs; 31. Extension shaft. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 The utility model provides a technical solution: a table frame structure, including a table top plate 1 and legs 3 arranged below both sides of the table top plate 1, and a half-bridge sensor 2 is also arranged between the two legs 3 and the table top plate 1;

[0032] The desktop top plate 1 is used to support the desktop plate and is connected to the lifting table frame through two legs 3. At this time, the half-bridge sensor 2 between the legs 3 and the desktop top plate 1 counts the weight borne on both sides of the desktop top plate 1 in real time by sensing the squeezing force generated by the legs 3. When the weight received at the half-bridge sensor 2 exceeds the preset upper limit of the load-bearing capacity, an alarm is sounded;

[0033] The half-bridge sensor 2 includes a force-sensitive elastic element 21 mounted on the bottom surface of the desktop top plate 1, a strain gauge 22 attached to the bottom surface of the force-sensitive elastic element 21, and a wire 23 electrically connected to the output end of the strain gauge 22;

[0034] The force-sensitive elastic element 21 is used to generate a corresponding deformation effect after being subjected to pressure, and the strain gauge 22 is used to sense the deformation effect generated by the force-sensitive elastic element 21, and output the deformation effect as an electrical signal of the pressure reading, and then output the electrical signal through the wire 23;

[0035] The force-sensitive elastic element 21 is provided with a first partition groove 212 and a second partition groove 213 which are arranged opposite to each other, and the center of the first partition groove 212 and the second partition groove 213 is abutted against the support leg 3;

[0036] Among them, the relative arrangement of the first partition groove 212 and the second partition groove 213 enables the support leg 3 to abut against the center of the first partition groove 212 and the second partition groove 213, and the first partition groove 212 and the second partition groove 213 can be deformed simultaneously, so that the abutment between the support leg 3 and the force-sensitive elastic element 21 can maintain parallel movement, thereby avoiding the support leg 3 squeezing the force-sensitive elastic element 21, causing unidirectional deformation and bending at the squeezing point, and ultimately avoiding the defect of inaccurate readings.

[0037] Specifically, Figure 4 As shown, the edges of the force-sensitive elastic element 21 are all provided with mounting holes corresponding to the bottom surface of the desktop top plate 1, a through hole 211 is provided at the center of the force-sensitive elastic element 21, and an extension shaft 31 is provided on the support leg 3 to be plugged into the through hole 211; the first partition groove 212 and the second partition groove 213 are both provided as annular grooves with one side opening, the first partition groove 212 is provided on the inner side of the second partition groove 213, and the first partition groove 212 and the second partition groove 213 are both provided in the area between the through hole 211 and the mounting hole;

[0038] Among them, the force-sensitive elastic element 21 is inserted into the external screw structure through the mounting hole, so that the edges of the force-sensitive elastic element 21 are fixed to the bottom surface of the desktop top plate 1, and the extension axis 31 of the support leg 3 is inserted into the through hole 211 to position the support leg 3 and the half-bridge sensor 2.

[0039] Specifically, Figure 4 As shown, the inner contour of the strain gauge 22 fits with the outer contour of the first partition groove 212, and the two sides of the outer contour of the strain gauge 22 fit with the two sides of the inner contour of the second partition groove 213; the desktop top plate 1 is provided with an inner groove 12 that is concave toward the desktop top plate 1 to match the area between the first partition groove 212 and the second partition groove 213;

[0040] Among them, the arrangement of the strain gauge 22 can simultaneously drive the bending of the strain gauge 22 when the force-sensitive elastic element 21 is deformed by pressure through the bending generated at the first partition groove 212 and the second partition groove 213, and finally output an electrical signal through the wire 23.

[0041] Specifically, Figure 1 As shown, baffles 11 extending obliquely downward are provided at both ends of the desktop top plate 1, and two half-bridge sensors 2 are arranged in the area between the two baffles 11, wherein the baffles 11 are arranged to prevent the half-bridge sensor 2 and the support foot 3 from being bent and tilted due to external collision.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A table frame structure, characterized in that: It comprises a desktop top plate (1) and supporting feet (3) arranged below the two sides of the desktop top plate (1), and a half-bridge sensor (2) is also arranged between the two supporting feet (3) and the desktop top plate (1); The half-bridge sensor (2) comprises a force-sensitive elastic element (21) mounted on the bottom surface of the desktop top plate (1), a strain gauge (22) attached to the bottom surface of the force-sensitive elastic element (21), and a wire (23) electrically connected to the output end of the strain gauge (22); The force-sensitive elastic element (21) is provided with a first partition groove (212) and a second partition groove (213) which are arranged opposite to each other, and the centers of the first partition groove (212) and the second partition groove (213) are mounted in contact with the support foot (3).

2. A table frame structure according to claim 1, characterized in that: The edges of the force-sensitive elastic element (21) are all provided with mounting holes corresponding to the bottom surface of the desktop top plate (1), a through hole (211) is provided at the center of the force-sensitive elastic element (21), and an extension shaft (31) is provided on the support foot (3) to be plugged into the through hole (211).

3. A table frame structure according to claim 2, characterized in that: The first partition groove (212) and the second partition groove (213) are both arranged as annular grooves with one side open, the first partition groove (212) is arranged inside the second partition groove (213), and the first partition groove (212) and the second partition groove (213) are both arranged in the area between the through hole (211) and the mounting hole.

4. A table frame structure according to claim 3, characterized in that: The inner contour of the strain gauge (22) fits with the outer contour of the first partition groove (212), and the two sides of the outer contour of the strain gauge (22) fit with the two sides of the inner contour of the second partition groove (213).

5. A table frame structure according to any one of claims 1 to 4, characterized in that: The desktop top plate (1) is provided with an inner groove (12) which is recessed toward the desktop top plate (1) to match the area between the first partition groove (212) and the second partition groove (213).

6. A table frame structure according to claim 5, characterized in that: Baffles (11) extending obliquely downward are provided at both ends of the desktop top plate (1), and the two half-bridge sensors (2) are arranged in the area between the two baffles (11).

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