Double-range electronic scale

Abstract

The utility model discloses a double-range electronic scale, which comprises an electronic scale body, the electronic scale body comprises a loading tray and a base, and the base is provided with a first weighing sensor and a second weighing sensor which can weigh articles on the loading tray. The maximum value of the measuring range of the second weighing sensor is larger than the maximum value of the measuring range of the first weighing sensor, a limiting structure capable of supporting the first weighing sensor in the deformation process of the first weighing sensor so as to limit the deformation of the first weighing sensor is arranged between the base and the first weighing sensor, and a display module used for displaying the weight of a weighed object is arranged on the base. The base is further provided with a PCBA control panel connected with the display module, and the PCBA control panel can receive and process signals of the first weighing sensor and the second weighing sensor and can control the display module to display the weight weighed by the first weighing sensor when the calculated weight is smaller than a preset value. And when the weighed weight is calculated to be greater than a preset value, the display module is controlled to display the main control chip of the weight weighed by the second weighing sensor, so that double-range weighing can be realized through one loading tray.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic scale structures, in particular to a dual-range electronic scale. Background Art

[0002] The larger the range and the larger the division of electronic scales on the market, the lower the accuracy; small-range electronic scales generally have smaller divisions and higher accuracy; large-range electronic scales generally have larger divisions and lower accuracy. In some usage scenarios, some items are heavy and require electronic scales with larger ranges, while the objects used with them are light and require higher-precision measurements. Electronic scales with a single range are difficult to meet the requirements of this use. For example, for some home baking users, the ratio of ingredients such as yeast and salt needs to be very precise, which requires a high-precision electronic scale, while weighing heavy ingredients such as flour requires a scale with a larger range.

[0003] There are some dual-range electronic scales on the market, but these electronic scales generally use scales of different ranges to weigh different items. When switching ranges, it is necessary to manually change the scale or move the weighed item to a different scale. This structure has many parts, complicated operation, high cost, and inconvenient use.

[0004] The utility model is made based on the above situation. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a dual-range electronic scale which can realize dual-range weighing through a loading tray, has high precision when weighing lighter objects, and can weigh heavier objects at the same time.

[0006] The utility model is realized by the following technical solutions:

[0007] A dual-range electronic scale comprises an electronic scale body, the electronic scale body comprises a loading tray and a base, a first weighing sensor and a second weighing sensor are provided on the base, which can weigh items on the loading tray, the maximum value of the range of the second weighing sensor is greater than the maximum value of the range of the first weighing sensor, a limiting structure is provided between the base and the first weighing sensor, which can support the first weighing sensor during the deformation process of the first weighing sensor so as to limit its deformation, a display module for displaying the weight of the weighed object is provided on the base, a PCBA control board connected to the display module is also provided on the base, the PCBA control board is provided with a main control chip which can receive and process signals from the first weighing sensor and the second weighing sensor and can control the display module to display the weight weighed by the first weighing sensor when the calculated weighed weight is less than a preset value, and control the display module to display the weight weighed by the second weighing sensor when the calculated weighed weight is greater than the preset value.

[0008] In a dual-range electronic scale as described above, the first weighing sensor includes a single-point weighing sensor, the single-point weighing sensor is provided with a connection and fixing end connected to a base and a measuring end connected to a loading tray, an avoidance gap is provided between the measuring end and the base to provide space for its deformation, and the limiting structure includes a support block provided below the measuring end for limiting the deformation amount of the single-point weighing sensor.

[0009] In the dual-range electronic scale as described above, the display module includes a display screen and a backlight panel electrically connected to the PCBA control board and capable of emitting lights of different colors according to different weights calculated by the PCBA control board.

[0010] In the dual-range electronic scale as described above, when the PCBA control board calculates that the weighed weight is less than a preset value, the backlight panel emits a light of color A; when the PCBA control board calculates that the weighed weight is greater than the preset value, the backlight panel emits a light of color B.

[0011] In the dual-range electronic scale as described above, the number of the second weighing sensors is four, and the second weighing sensors are respectively distributed in the left front, left rear, right front and right rear of the first weighing sensor so as to surround the first weighing sensor.

[0012] In a dual-range electronic scale as described above, the base includes a bottom shell, the bottom shell is provided with a accommodating cavity opening upward, the first weighing sensor, the second weighing sensor and the PCBA control board are all arranged in the accommodating cavity, and the bottom shell is provided with a surface cover for covering the opening of the accommodating cavity.

[0013] In the dual-range electronic scale as described above, the second weighing sensor is provided with a measuring support foot extending from the lower part of the bottom shell.

[0014] In the dual-range electronic scale as described above, the display module is arranged in the accommodating cavity, and the surface cover is provided with an observation window for observing the display module.

[0015] In the dual-range electronic scale as described above, an upper support frame is connected below the loading tray, a connector connecting the measuring end and the upper support frame is provided between the measuring end and the upper support frame, and a through hole is provided on the surface cover for the measuring end or the connector to pass through.

[0016] In the dual-range electronic scale as described above, a lower support frame is provided in the accommodating cavity, the lower support frame is connected to the bottom shell, and the connecting fixed end is connected to the lower support frame.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The base is provided with a first weighing sensor, a second weighing sensor and a PCBA control board for receiving and processing signals of the first weighing sensor and the second weighing sensor. When the PCBA control board calculates that the weighed weight is less than a preset value, the display module displays the weight weighed by the first weighing sensor. When the PCBA control board calculates that the weighed weight is greater than the preset value, the display module displays the weight weighed by the second weighing sensor. Thus, dual-range weighing can be achieved through a loading tray, with high accuracy when weighing lighter objects and the ability to weigh heavier objects at the same time.

[0019] 2. A limit structure is provided between the base and the first weighing sensor or between the base and the loading tray to limit excessive deformation of the first weighing sensor, thereby preventing the first weighing sensor from being damaged due to excessive deformation when the weight of the measured object exceeds the safety deformation threshold of the first weighing sensor.

[0020] 3. The display module includes a display screen and a backlight panel which is electrically connected to the PCBA control board and can emit different colors of light according to different weights calculated by the PCBA control board. The backlight color can be automatically switched according to the weight of the weighed object, so that the user can more intuitively know the range and accuracy of the weighed object. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the utility model. Figure 2 ;

[0026] Figure 5 The utility model is a cross-sectional view Figure 1 ;

[0027] Figure 6 The utility model is a cross-sectional view Figure 2 ;

[0028] Figure 7 It is a schematic diagram of the weighing display principle of the utility model. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings:

[0030] like Figures 1 to 7 A dual-range electronic scale shown in the figure includes an electronic scale body 1, the electronic scale body 1 includes a loading tray 2 and a base 3, the base 3 is provided with a first weighing sensor 4 and a second weighing sensor 5 that can weigh items on the loading tray 2, the range maximum value of the second weighing sensor 5 is greater than the range maximum value of the first weighing sensor 4, a limiting structure 6 that can support the first weighing sensor 4 during the deformation process of the first weighing sensor 4 to limit its deformation is provided between the base 3 and the first weighing sensor 4, a display module for displaying the weight of the weighed object is provided on the base 3, and a PCBA control board 7 connected to the display module is also provided on the base 3, and a main control chip that can receive and process signals from the first weighing sensor 4 and the second weighing sensor 5 and can control the display module to display the weight weighed by the first weighing sensor 4 when the calculated weighed weight is less than a preset value, and control the display module to display the weight weighed by the second weighing sensor 5 when the calculated weighed weight is greater than the preset value.

[0031] A first weighing sensor 4 and a second weighing sensor 5 for weighing are provided on the base 3, and a PCBA control board 7 for receiving and processing signals of the first weighing sensor 4 and the second weighing sensor 5. When the PCBA control board 7 calculates that the weighed weight is less than a preset value, the display module displays the weight weighed by the first weighing sensor 4; when the PCBA control board 7 calculates that the weighed weight is greater than the preset value, the display module displays the weight weighed by the second weighing sensor 5, so that dual-range weighing can be achieved through a loading tray 2, with high accuracy when weighing lighter objects, and at the same time, heavier objects can be weighed.

[0032] In one embodiment, the first weighing sensor 4 comprises a single-point weighing sensor, the single-point weighing sensor is provided with a connection fixing end 41 connected to the base 3 and a measuring end 42 connected to the loading tray 2, an avoidance gap 43 is provided between the measuring end 42 and the base 3 to provide space for its deformation, and the limiting structure 6 comprises a support block provided below the measuring end 42 for limiting the deformation amount of the single-point weighing sensor. The support block limits the deformation of the first weighing sensor 4 to be too large, thereby preventing the first weighing sensor 4 from being damaged due to excessive deformation when the weight of the measured object exceeds the safety deformation threshold of the first weighing sensor 4. The single-point weighing sensor described herein can be a single-point balance beam weighing sensor, and of course it can also be other single-point weighing sensors.

[0033] The support block ensures the stability and safety of the measurement system. When the object to be measured is placed on the loading tray 2, its weight will be transferred to the first weighing sensor 4. If the weight of the object exceeds the safety deformation threshold of the first weighing sensor 4, that is, exceeds the maximum deformation range that it can withstand when it is designed, the support block will play a role in offsetting part of the additional pressure, thereby preventing the first weighing sensor 4 from being damaged due to excessive deformation force.

[0034] The support block not only enhances the durability of the entire measuring system, but also greatly improves its reliability in practical applications. Through such a design, even in the face of an unexpectedly heavy object, the measuring system can maintain its structural integrity, avoiding measurement errors or system failures caused by damage to the first weighing sensor 4, and ensuring the accuracy of the measurement results and the long-term stable operation of the equipment.

[0035] The support block can be integrally formed with the base 3, and can also be connected to the base 3 by other connection methods such as threaded fasteners or glue. The measuring end 42 is connected to the base 3 by threaded fasteners.

[0036] The display module includes a display screen 81 and a backlight panel 82 which is electrically connected to the PCBA control board 7 and can emit lights of different colors according to different weights calculated by the PCBA control board 7. The display screen 81 is responsible for intuitively displaying the weight data of the measured object so that the user can quickly read the measurement results. The backlight panel 82 is electrically connected to the PCBA control board 7 and its function is to emit lights of different colors according to different weight values ​​calculated by the PCBA control board 7.

[0037] In a specific embodiment, the light change of the backlight panel 82 has a clear corresponding relationship with the weight of the weighed item. When the PCBA control board 7 calculates that the weighed weight is less than the preset value through the internal circuit and algorithm, the backlight panel 82 will emit a light of color A. This color may represent "lightweight". When the PCBA control board 7 calculates that the weighed weight is greater than the preset value, the backlight panel 82 will switch to a light of color B. Color B may be more eye-catching, to remind the user that the weight of the current weighed item is "heavyweight".

[0038] Through this color-changing design, the user can not only read the specific weight value from the display screen 81, but also intuitively know the range and accuracy of the weighed item through the light color of the backlight panel 82. This design not only improves the user experience, but also enhances the accuracy and reliability of the measurement, making the entire measurement process more convenient and efficient.

[0039] In one embodiment, the number of the second weighing sensors 5 is four, and the second weighing sensors 5 are respectively distributed in the left front, left rear, right front and right rear of the first weighing sensor 4 to surround the first weighing sensor 4. This allows the electronic scale to weigh more stably and reduce weighing errors.

[0040] In one embodiment, the base 3 includes a bottom shell 31, the bottom shell 31 is provided with a receiving cavity 311 with an opening facing upward, the first load cell 4, the second load cell 5 and the PCBA control board 7 are all arranged in the receiving cavity 311, and the bottom shell 31 is provided with a cover 32 for covering the opening of the receiving cavity 311. The second load cell 5 is provided with a measuring support foot 51 extending from the lower part of the bottom shell 31.

[0041] The display module is arranged in the accommodating cavity 311, and the surface cover 32 is provided with an observation window 321 for observing the display module. A transparent protective cover 83 for protecting the display module is also provided at the observation window 321.

[0042] In one embodiment, an upper support frame 91 is connected to the lower part of the loading tray 2, a connecting piece 92 is provided between the measuring end 42 and the upper support frame 91 to connect the two, and a through hole 322 is provided on the surface cover 32 for the measuring end 42 or the connecting piece 92 to pass through. The upper support frame 91 can be connected to the lower part of the loading tray 2 by glue or other connection methods. The connecting piece 92 is a threaded fastener.

[0043] A lower support frame 93 is provided in the accommodating cavity 311, and the lower support frame 93 is connected to the bottom shell 31, and the connecting fixed end 41 is connected to the lower support frame 93. The lower support frame 93 is connected to the bottom shell 31 by threaded fasteners or other connecting methods, and the fixed end 41 is connected to the lower support frame 93 by threaded fasteners or other connecting methods.

Claims

1. A dual-range electronic scale, characterized in that: The electronic scale comprises an electronic scale body (1), wherein the electronic scale body (1) comprises a loading tray (2) and a base (3), wherein the base (3) is provided with a first weighing sensor (4) and a second weighing sensor (5) capable of weighing items on the loading tray (2), wherein the maximum value of the measuring range of the second weighing sensor (5) is greater than the maximum value of the measuring range of the first weighing sensor (4), and a limiting structure capable of supporting the first weighing sensor (4) during the deformation process of the first weighing sensor (4) so ​​as to limit its deformation is provided between the base (3) and the first weighing sensor (4). (6), a display module for displaying the weight of the object being weighed is provided on the base (3), and a PCBA control board (7) connected to the display module is also provided on the base (3), and the PCBA control board (7) is provided with a main control chip capable of receiving and processing signals from the first weighing sensor (4) and the second weighing sensor (5), and capable of controlling the display module to display the weight weighed by the first weighing sensor (4) when the calculated weighed weight is less than a preset value, and controlling the display module to display the weight weighed by the second weighing sensor (5) when the calculated weighed weight is greater than the preset value.

2. A dual-range electronic scale according to claim 1, characterized in that: The first weighing sensor (4) comprises a single-point weighing sensor, the single-point weighing sensor being provided with a connection fixing end (41) connected to a base (3) and a measuring end (42) connected to a loading tray (2), an avoidance gap (43) being provided between the measuring end (42) and the base (3) to provide space for its deformation, and the limiting structure (6) comprising a support block provided below the measuring end (42) for limiting the deformation amount of the single-point weighing sensor.

3. A dual-range electronic scale according to claim 2, characterized in that: The display module comprises a display screen (81) and a backlight panel (82) which is electrically connected to the PCBA control board (7) and can emit lights of different colors according to different weights calculated by the PCBA control board (7).

4. A dual-range electronic scale according to claim 3, characterized in that: When the PCBA control board (7) calculates that the weight is less than a preset value, the backlight board (82) emits a light of color A; when the PCBA control board (7) calculates that the weight is greater than the preset value, the backlight board (82) emits a light of color B.

5. A dual-range electronic scale according to any one of claims 2 to 4, characterized in that: The number of the second weighing sensors (5) is four, and the second weighing sensors (5) are respectively distributed in the left front, left rear, right front and right rear of the first weighing sensor (4) so ​​as to surround the first weighing sensor (4).

6. A dual-range electronic scale according to claim 5, characterized in that: The base (3) comprises a bottom shell (31), the bottom shell (31) is provided with a receiving cavity (311) opening upward, the first weighing sensor (4), the second weighing sensor (5) and the PCBA control board (7) are all arranged in the receiving cavity (311), and the bottom shell (31) is provided with a surface cover (32) for covering the opening of the receiving cavity (311).

7. A dual-range electronic scale according to claim 6, characterized in that: The second weighing sensor (5) is provided with a measuring support foot (51) extending from the lower part of the bottom shell (31).

8. A dual-range electronic scale according to claim 6, characterized in that: The display module is arranged in the accommodating cavity (311), and the surface cover (32) is provided with an observation window (321) for observing the display module.

9. A dual-range electronic scale according to claim 6, characterized in that: An upper support frame (91) is connected below the loading tray (2), a connecting piece (92) for connecting the measuring end (42) and the upper support frame (91) is provided between the measuring end (42) and the upper support frame (91), and a through hole (322) for the measuring end (42) or the connecting piece (92) to pass through is provided on the surface cover (32).

10. A dual-range electronic scale according to claim 6, characterized in that: A lower support frame (93) is provided in the accommodating cavity (311), the lower support frame (93) is connected to the bottom shell (31), and the connecting and fixing end (41) is connected to the lower support frame (93).

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