Anti-interference body weight scale based on single-point force structure

Abstract

The utility model discloses an anti -interference body weight scale based on single point stress structure, including scale bottom plate and scale panel, the scale bottom plate and scale panel form the installation inner chamber after the enclosure, and the four corner position of scale bottom plate is equipped with the installation round frame, and its bottom surface has opened the through groove of the diameter less than self, is equipped with a scale angle in every installation round frame, and the scale angle contains the coaxial connection of first round plate and second round plate, and first round plate is placed in the installation round frame, and second round plate penetrates through the through groove, the top center of first round plate is equipped with the contact iron block, still be equipped with the clamping seat of being located in the scale angle just above in the installation round frame, and the clamping seat bottom is equipped with the sensor, and the sensor bottom center is fixed with the hemisphere lug, and the hemisphere lug and contact iron block abut. The utility model discloses through change original sensor's stress point, and the pressure of scale surface will converge on a point of sensor, and the stress is more focused, and the inaccuracy of weighing data is guaranteed to overcome the uneven ground, the shaking of the person of weighing or the difference of ground hardness difference etc.

Description

Technical Field

[0001] This utility model relates to the field of weighing scale technology, specifically an anti-interference weighing scale based on a single-point force structure. Background Technology

[0002] Traditional weighing scales have significant limitations in their sensor force-feeding mechanism. Their typical structure relies on surface contact and compression between the sensor and a plastic clip to transmit pressure signals. When a user stands on the scale, their weight is transmitted through multiple mechanical stages before finally acting on the sensor surface. However, this transmission method is poorly adaptable to the environment. If the weighing scale is placed on uneven ground, or on ground with localized differences in hardness (such as at the junction of floor tiles and carpet), the force on the scale's support points will be uneven, thus distorting the pressure distribution received by the sensor.

[0003] A more prominent problem lies in the dynamic interference during human weighing. Even slight body movements by the user can cause the scale to tilt or deform locally, leading to sliding friction or misalignment between the plastic clips and the sensor in traditional structures. This non-perpendicular interference force, combined with the body weight, forces the sensor to receive stress from multiple directions simultaneously, causing distortion in the electrical signal output. This ultimately results in excessively large positive and negative tolerances in the weighing results; consecutive measurements by the same user may show fluctuations exceeding ±0.5 kg, severely reducing measurement accuracy and reliability. Utility Model Content

[0004] The purpose of this invention is to provide an anti-interference weighing scale based on a single-point force structure. By changing the original force point of the sensor, the pressure on the scale surface is concentrated on one point of the sensor, making the force more focused. It also overcomes external interference factors such as uneven ground, shaking of the weigher, or differences in the hardness of the ground, thereby ensuring the accuracy of the weighing data and solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-interference weighing scale based on a single-point force structure includes a scale base plate and a scale panel. The scale base plate and the scale panel together form an installation cavity. The scale base plate has installation circular frames at its four corners, and the bottom surface of each frame has a through groove with a diameter smaller than its own. Each installation circular frame contains a scale corner, which includes a first circular plate and a second circular plate coaxially connected. The first circular plate is placed inside the installation circular frame, and the second circular plate passes through the through groove. A contact iron block is provided at the top center of the first circular plate. The installation circular frame also contains a bracket located directly above the scale corner. A sensor is provided at the bottom of the bracket, and a hemispherical protrusion is fixed at the center of the bottom surface of the sensor. The hemispherical protrusion abuts against the contact iron block.

[0007] Preferably, the bottom of the second circular plate has a circular groove, and an elastic pad is bonded inside the groove, the thickness of the elastic pad being greater than the depth of the circular groove.

[0008] Preferably, the inner circumferential surface of the mounting frame is provided with a first buckle, and the side wall of the mounting base is provided with a first buckle seat that cooperates with the first buckle.

[0009] Preferably, the bottom of the card holder has a second receiving groove for accommodating the sensor, and the bottom of the card holder is also provided with a second buckle for limiting the position of the sensor.

[0010] Preferably, the bottom surface of the mounting frame is provided with a ring of columns around the through groove, and the first circular plate has positioning holes for the columns to pass through.

[0011] Preferably, the contact block is housed in a first receiving groove at the top of the first circular plate, and the top surface of the contact block is flush with the top surface of the first circular plate.

[0012] Preferably, one side of the mounting cavity is also provided with a display screen and a display screen frame surrounding the display screen.

[0013] Preferably, the electrode plates of the scale panel are located at the four corners of its top surface.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model transforms the surface contact force of traditional sensors into concentrated force at a single fixed contact point by setting hemispherical protrusions at each support point to precisely abut against the contact iron block. This point contact mechanism allows the sensor to sense only the vertical compressive force change, effectively isolating the interference of lateral stress. The corresponding beneficial effect is a significant improvement in weighing stability. Even when the ground is slightly tilted or the user shakes, the sensor can still accurately capture pure gravity signals.

[0016] 2. In this utility model, the weighing platform adopts a split circular plate design. The bottom groove of the second circular plate is embedded with an ultra-thick elastic pad. The thickness of the pad is greater than the groove depth, creating an interference fit. When the weighing platform is placed on uneven ground, the elastic pad undergoes differentiated deformation to adaptively adjust the height. Simultaneously, the first circular plate achieves radial floating through a gap fit between its positioning hole and the column. The beneficial effect of this double-buffered structure is that it absorbs environmental vibration energy, prevents impact forces from being transmitted to the sensor, and fundamentally eliminates weighing drift caused by uneven ground.

[0017] 3. The installation of the circular frame in this utility model achieves vertical positioning by engaging the locking mechanism of the first buckle on the side wall of the card seat with the first buckle. The sensor is fixed in the second receiving groove of the card seat by the second buckle. The beneficial effect of this layered assembly structure is to ensure that the hemispherical protrusion and the contact iron block always maintain precise alignment. Even after long-term use and wear of mechanical parts, the core force point can still maintain the initial positional relationship, thus extending the precision life of the product. Attached Figure Description

[0018] Figure 1 This is an exploded view of the overall structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the bottom of the sensor of this utility model;

[0021] Figure 4 This is an exploded view of the sensor and card holder of this utility model;

[0022] Figure 5 This is a diagram showing the positional relationship between the hemispherical protrusion and the contact iron block of this utility model;

[0023] Figure 6 This is a cross-sectional view showing the positional relationship between the scale base plate and the scale corners of this utility model.

[0024] In the diagram: 1. Scale base plate; 2. Scale panel; 3. Mounting cavity; 4. Display screen; 5. Display screen outer frame; 6. Mounting circular frame; 7. Scale corner; 8. Contact iron block; 9. Card holder; 10. Sensor; 11. Hemispherical protrusion; 12. Circular groove; 13. Elastic pad; 14. Through groove; 15. First circular plate; 16. Second circular plate; 17. Positioning hole; 18. Column; 19. First buckle; 20. First buckle seat; 21. Second receiving groove; 22. Second buckle; 23. First receiving groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To address the issue in existing technologies where sensor force is transmitted through the squeezing force between the sensor and the plastic clip, which can be affected by external factors such as uneven ground, variations in ground hardness, and human movement during weighing, leading to inaccurate weighing and excessive positive and negative tolerances, the following technical solution is provided. Please refer to [link / reference]. Figure 1-6 ;

[0027] An installation cavity 3 is formed between the base plate 1 and the panel 2 of the weighing scale, and electrode plates are provided at the four corners of the top surface of the panel 2.

[0028] A display screen 4 and a display screen frame 5 are provided on one side of the inner cavity 3.

[0029] The four corners of the scale base plate 1 are provided with mounting round frames 6. The bottom surface of the mounting round frames 6 is provided with through grooves 14, and the diameter of the through grooves 14 is smaller than the diameter of the mounting round frames 6.

[0030] The mounting frame 6 is provided with a weighing corner 7, which includes a first circular plate 15 and a second circular plate 16 coaxially connected. The first circular plate 15 is located inside the mounting frame 6, and the second circular plate 16 is located inside the through groove 14.

[0031] A ring of columns 18 is provided on the bottom surface of the mounting frame 6. The columns 18 are distributed around the through groove 14. The first circular plate 15 is provided with positioning holes 17, and the columns 18 pass through the positioning holes 17.

[0032] A first receiving groove 23 for accommodating the contact iron block 8 is provided at the top center of the first circular plate 15, and the top surface of the contact iron block 8 is flush with the top surface of the first circular plate 15.

[0033] The bottom of the second circular plate 16 is provided with a circular groove 12, and an elastic pad 13 is bonded inside the circular groove 12. The thickness of the elastic pad 13 is greater than the depth of the circular groove 12. The elastic pad 13 is in contact with the ground. The elastic pad 13 can adapt to uneven ground, differences in softness and hardness, and slight shaking of the human body, and absorb these disturbances.

[0034] The mounting frame 6 also includes a mounting base 9, which is located directly above the weighing corner 7. The bottom of the mounting base 9 has a second receiving groove 21 for accommodating the sensor 10, and the bottom of the mounting base 9 also has a second buckle 22 for limiting the sensor 10.

[0035] The inner circumferential surface of the mounting frame 6 is provided with a first buckle 19 for limiting the card holder 9. The first buckle 19 cooperates with the first buckle 20 provided on the side wall of the card holder 9.

[0036] A hemispherical protrusion 11 is fixed at the center of the bottom surface of the sensor 10, and the hemispherical protrusion 11 abuts against the contact iron block 8.

[0037] When the scale panel 2 bears weight, the force on the sensor 10 mainly comes from the compression between the hemispherical protrusion 11 and the contact iron block 8. Due to the geometric characteristics of the hemispherical protrusion 11, no matter how the scale body is tilted, the contact point between it and the contact iron block 8 always remains in a single fixed position. The compression point between the hemispherical protrusion 11 and the contact iron block 8 always remains relatively fixed and concentrated. The pressure will only be concentrated on one point of the sensor 10. By sensing the compression force and displacement change at this concentrated point, the sensor 10 can stably obtain the effective pressure signal of the scale panel 2. This signal is transmitted to the microprocessor set in the mounting cavity 3 and calculates the accurate weight data.

[0038] Working principle: When a user stands on the scale panel 2, the weight pressure is transmitted through the panel to the four corner scale corners 7. Each scale corner 7 consists of a first circular plate 15 and a second circular plate 16 coaxially connected. The first circular plate 15 is fitted onto the column 18 on the bottom surface of the mounting frame 6 through positioning holes 17, achieving radial limitation but allowing axial slight movement. An extra-thick elastic pad 13 is bonded to the circular groove 12 at the bottom of the second circular plate 16. This design allows the scale corner 7 to adapt to uneven ground or differences in ground hardness.

[0039] The core of pressure transmission occurs in the sensor 10 area: the mounting bracket 9 inside the mounting frame 6 is fixed to the first buckle 19 on the inner circumference of the mounting frame 6 by the first buckle 20 on the side wall. The second receiving groove 21 at the bottom of the bracket 9 accommodates the sensor 10 and is limited by the second buckle 22. The hemispherical protrusion 11 at the center of the bottom surface of the sensor 10 precisely abuts against the contact iron block 8 in the first receiving groove 23 at the top of the first circular plate 15. Due to the geometric characteristics of the hemispherical protrusion 11, no matter how the scale body is tilted, its contact point with the contact iron block 8 always remains in a single fixed position. The pressure is concentrated on this contact point, so that the sensor 10 obtains the squeezing pressure and displacement change signal only through single-point force. This signal is transmitted to the microprocessor in the mounting cavity 3, and after calculation, the accurate weight is displayed on the display screen 4. The sealed cavity formed by the scale base plate 1 and the scale panel 2 protects the internal components, while the design of the scale corner 7 penetrating the bottom surface of the mounting frame 6 through the through groove 14 ensures that the gravity is finally distributed to the ground through the elastic pad 13.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An anti-interference weighing scale based on a single-point force-bearing structure, comprising a scale base plate (1) and a scale panel (2), characterized in that, The weighing base plate (1) and the weighing panel (2) are enclosed to form an installation cavity (3). The four corners of the weighing base plate (1) are provided with mounting circular frames (6), and the bottom surface of each frame has a through groove (14) with a diameter smaller than itself. Each mounting circular frame (6) is provided with a weighing corner (7). The weighing corner (7) includes a first circular plate (15) and a second circular plate (16) connected coaxially. The first circular plate (15) is placed inside the mounting circular frame (6), and the second circular plate (16) passes through the through groove (14). The top center of the first circular plate (15) is provided with a contact iron block (8). The mounting circular frame (6) is also provided with a card seat (9) located directly above the weighing corner (7). The bottom of the card seat (9) is provided with a sensor (10). The bottom center of the sensor (10) is fixed with a hemispherical protrusion (11), which abuts against the contact iron block (8).

2. The anti-interference weighing scale based on a single-point force structure according to claim 1, characterized in that, The second circular plate (16) has a circular groove (12) at the bottom, and an elastic pad (13) is bonded inside the circular groove (12). The thickness of the elastic pad (13) is greater than the depth of the circular groove (12).

3. The anti-interference weighing scale based on a single-point force structure according to claim 2, characterized in that, The inner circumferential surface of the mounting frame (6) is provided with a first buckle (19), and the side wall of the mounting base (9) is provided with a first buckle seat (20) that cooperates with the first buckle (19).

4. The anti-interference weighing scale based on a single-point force structure according to claim 3, characterized in that, The card holder (9) has a second receiving groove (21) at the bottom to accommodate the sensor (10), and the card holder (9) also has a second buckle (22) at the bottom for limiting the sensor (10).

5. The anti-interference weighing scale based on a single-point force structure according to claim 4, characterized in that, The bottom surface of the mounting frame (6) is provided with a ring of columns (18) around the through groove (14), and the first circular plate (15) has a positioning hole (17) for the columns (18) to pass through.

6. The anti-interference weighing scale based on a single-point force structure according to claim 5, characterized in that, The contact block (8) is disposed in the first receiving groove (23) at the top of the first circular plate (15), and the top surface of the contact block (8) is flush with the top surface of the first circular plate (15).

7. The anti-interference weighing scale based on a single-point force structure according to claim 6, characterized in that, The mounting cavity (3) is also provided with a display screen (4) and a display screen frame (5) surrounding the display screen (4).

8. The anti-interference weighing scale based on a single-point force structure according to claim 7, characterized in that, The electrode plates of the scale panel (2) are located at the four corners of its top surface.

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