Weighing sensor device and electronic scale

Abstract

The present invention relates to the technical field of weighing equipment, and provides a weighing sensor device and an electronic scale. The weighing sensor device is used to convert the load-bearing weight of a scale pan of the electronic scale into an electrical signal, and comprises a first sensor and a force dividing mechanism arranged between the first sensor and the scale pan, the force dividing mechanism is connected to the scale pan, the first sensor comprises a first fixed part and a first deformation part connected to the first fixed part, the force dividing mechanism is provided with an abutting end for abutting against the first deformation part, the weighing sensor device bears the weight of the heavy object together with the first sensor through the force dividing mechanism, so as to prevent the first deformation part from continuing to be compressed and deformed and exceeding its own maximum range, thereby causing the first deformation part to undergo irreversible deformation, effectively avoiding damage to the first sensor due to overload work, and preventing the first sensor from overloading in the above manner, without increasing the thickness of the first deformation part of the first sensor, and also effectively ensuring the detection accuracy of the first sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing equipment, and in particular to a weighing sensor device and an electronic scale. Background Art

[0002] Electronic scales are a commonly used weighing instrument in daily life. With the rise of the weight loss trend, electronic scales have basically become a must-have daily appliance in every household.

[0003] An electronic scale generally includes a weighing pan and a weighing sensor arranged at the bottom of the weighing pan. When a heavy object is placed on the weighing pan, the weight of the heavy object is transferred to the weighing sensor through the weighing pan, causing the spring piece of the weighing sensor to be compressed and deformed. The weighing sensor converts the load-bearing weight of the weighing pan into an electrical signal, so that the weight value of the heavy object is displayed on the display screen.

[0004] However, after being overloaded, the shrapnel of the traditional weighing sensor is prone to irreversible deformation, causing damage to the weighing sensor. In order to prevent the weighing sensor from overloading, some manufacturers will increase the range of the weighing sensor by increasing the thickness of the elastic deformation piece of the weighing sensor, but this will also cause inaccurate detection of the weighing sensor. Summary of the invention

[0005] The object of the present invention is to provide a weighing sensor device and an electronic scale, aiming to solve the technical problems that the existing weighing sensors are easily damaged and have low detection accuracy.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a weighing sensor device, used to convert the load-bearing weight of the scale pan of an electronic scale into an electrical signal, including a first sensor and a force distribution mechanism arranged between the first sensor and the scale pan, the force distribution mechanism is connected to the scale pan, the first sensor includes a first fixed part and a first deformation part connected to the first fixed part, and the force distribution mechanism is provided with an abutting end for abutting with the first deformation part.

[0007] The weighing sensor device provided by the present invention has at least the following beneficial effects: after placing a heavy object on the weighing pan, when the first deformation part of the first sensor reaches a certain deformation amount (at this time it does not exceed the maximum range of the first sensor), the first deformation part abuts against the abutting end of the force sharing mechanism, and the force sharing mechanism and the first sensor jointly bear the weight of the heavy object to prevent the first deformation part from continuing to be compressed and deformed and exceeding its own maximum range, thereby causing irreversible deformation of the first deformation part, effectively avoiding damage to the first sensor due to overload. By preventing the first sensor from overloading in the above manner, there is no need to increase the thickness of the first deformation part of the first sensor, and the detection accuracy of the first sensor is effectively guaranteed.

[0008] In one embodiment, the force distribution mechanism includes one or more second sensors, the first sensor and the second sensor are stacked in sequence, the second sensor includes a second fixed portion connected to the first fixed portion and a second deformation portion connected to the second fixed portion, and the abutment end is provided at one end of the second deformation portion away from the second fixed portion.

[0009] In one embodiment, a first contact is provided on a side of the first deformable portion facing away from the second sensor, a second contact is provided on a side of the second deformable portion opposite to the first sensor, the second contact is provided at an end of the second deformable portion away from the second fixed portion to form the abutting end, and the first contact is coaxially arranged with the second contact.

[0010] In one embodiment, the force distribution mechanism further includes a separator, and the second fixing portion is connected to the first fixing portion via the separator, so that the first deformation portion and the second deformation portion are separated from each other.

[0011] In one embodiment, the force distribution mechanism includes a limiting column, one end of which is fixedly connected to the weighing pan and the other end of which forms the abutting end.

[0012] In one embodiment, a first contact point is provided on a side of the first deformation portion facing away from the limiting column, and the limiting column is coaxially arranged with the first contact point.

[0013] In one embodiment, the force distribution mechanism includes a limit column and one or more second sensors, the first sensor and the second sensor are stacked in sequence, the second sensor includes a second fixed portion connected to the first fixed portion and a second deformable portion connected to the second fixed portion, the second deformable portion is provided with the abutting end at one end away from the second fixed portion, one end of the limit column is fixedly connected to the weighing pan and the other end is used to abut against the second deformable portion.

[0014] In one embodiment, a first contact is provided on a side of the first deformation portion facing away from the second sensor, a second contact is provided on a side of the second deformation portion opposite to the first sensor, the second contact is provided at an end of the second deformation portion away from the second fixed portion to form the abutting end, and the first contact, the second contact and the limiting column are coaxially arranged.

[0015] To achieve the above object, the present invention further provides an electronic scale, comprising a weighing pan and at least one of the above-mentioned weighing sensor devices, wherein the weighing sensor device is arranged at the bottom of the weighing pan.

[0016] Since the electronic scale adopts all the embodiments of the weighing sensor device, it has at least all the beneficial effects of the above embodiments, which will not be described one by one here.

[0017] In one embodiment, a plurality of force transmission components are disposed at the bottom of the weighing pan, and a corresponding weighing sensor device is disposed at one end of each force transmission component away from the weighing pan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 An exploded diagram of a weighing sensor device provided in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 A partial cross-sectional view of the weighing sensor device shown;

[0021] Figure 3 An exploded view of a weighing sensor device provided in another embodiment of the present invention;

[0022] Figure 4 An exploded view of a weighing sensor device provided in yet another embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the electronic scale provided by the present invention;

[0024] Figure 6 A partial cross-sectional view of an electronic scale provided by an embodiment of the present invention;

[0025] Figure 7 A partial cross-sectional view of an electronic scale provided by another embodiment of the present invention;

[0026] Figure 8 A partial cross-sectional view of an electronic scale provided in yet another embodiment of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 10. Weighing sensor device, 11. First sensor, 111. First fixing part, 112. First deformation part, 1121. First elastic section, 1122. Second elastic section, 113. First contact point, 114. First resistance strain gauge, 12. Force distribution mechanism, 121. Second sensor, 1211. Second fixing part, 1212. Second deformation part, 1213. Second contact point, 1214. Second resistance strain gauge, 1215. Third elastic section, 1216. Fourth elastic section, 122. Partition, 123. Limiting column, 20. Scale pan, 21. Force transmission component, 22. Display screen. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please combine Figures 1 to 4As shown, a weighing sensor device 10 is used to convert the load-bearing weight of a scale pan 20 of an electronic scale into an electrical signal, including a first sensor 11 and a force distribution mechanism 12 arranged between the first sensor 11 and the scale pan 20, the force distribution mechanism 12 is connected to the scale pan 20, the first sensor 11 includes a first fixed portion 111 and a first deformable portion 112 connected to the first fixed portion 111, and the force distribution mechanism 12 is provided with an abutting end for abutting against the first deformable portion 112.

[0034] After placing a heavy object on the weighing pan 20, when the first deformation portion 112 of the first sensor 11 reaches a certain deformation amount (at this time it does not exceed the maximum range of the first sensor 11), the first deformation portion 112 abuts against the abutting end of the force sharing mechanism 12, and the force sharing mechanism 12 and the first sensor 11 jointly bear the weight of the heavy object to prevent the first deformation portion 112 from continuing to be compressed and deformed and exceeding its own maximum range, thereby causing irreversible deformation of the first deformation portion 112, effectively preventing the first sensor 11 from being damaged due to overload. By preventing the first sensor 11 from overloading in the above manner, there is no need to increase the thickness of the first deformation portion 112 of the first sensor 11, and the detection accuracy of the first sensor 11 is also effectively guaranteed.

[0035] Embodiment 1

[0036] Please combine Figure 1 and Figure 2 As shown, in this embodiment, the force distribution mechanism 12 includes one or more second sensors 121, the first sensor 11 and the second sensor 121 are stacked in sequence, the second sensor 121 includes a second fixed portion 1211 for connecting to the first fixed portion 111 and a second deformation portion 1212 connected to the second fixed portion 1211, and the second deformation portion 1212 is provided with an abutment end at one end away from the second fixed portion 1211. After placing a heavy object on the weighing pan 20, when the first deformation portion 112 of the first sensor 11 reaches a certain deformation amount (at this time it does not exceed the maximum range of the first sensor 11), the first deformation portion 112 abuts against the abutting end of the second sensor 121, and the second sensor 121 and the first sensor 11 jointly bear the weight of the heavy object to prevent the first deformation portion 112 from continuing to be compressed and deformed and exceeding its own maximum range, thereby causing irreversible deformation of the first deformation portion 112, effectively avoiding damage to the first sensor 11 due to overload. By preventing the first sensor 11 from overloading in the above manner, there is no need to increase the thickness of the first deformation portion 112 of the first sensor 11, and the detection accuracy of the first sensor 11 is also effectively guaranteed.

[0037] It should be noted that the first sensor 11 and the second sensor 121 can be arranged at intervals or in contact with each other. When the first sensor 11 and the second sensor 121 are arranged at intervals from each other, the deformation of the first deformation variable 112 of the first sensor 11 exceeds the spacing between the first sensor 11 and the second sensor 121 and then abuts against the abutting end of the second deformation part 1212. At this time, the second sensor 121 and the first sensor 11 jointly bear the weight of the heavy object, and the weight of the heavy object is equal to the sum of the corresponding detection value of the deformation variable before the first deformation part 112 abuts against the second deformation part 1212, the corresponding detection value of the continued deformation variable after the first deformation part 112 abuts against the second deformation part 1212, and the corresponding detection value of the deformation variable of the second deformation part 1212.

[0038] For example, assuming that the weight of the heavy object is 100KG, the maximum range of the first sensor 11 and the second sensor 121 are both 100KG. After the heavy object is placed on the scale pan 20, the corresponding detection value of the deformation amount before the first deformation part 112 and the second deformation part 1212 abut is 60KG, and then, the first deformation part 112 abuts against the abutting end of the second deformation part 1212, the first deformation part 112 continues to deform, and the corresponding detection value of the deformation amount of the second deformation part 1212 is 20KG, that is, the weight of the heavy object = 60KG + 20KG + 20KG.

[0039] When the first sensor 11 and the second sensor 121 are arranged in contact with each other, the first deformable part 112 and the second deformable part 1212 are deformed synchronously, and the weight of the heavy object is equal to the sum of the detection value corresponding to the deformation amount of the first deformable part 112 and the detection value corresponding to the deformation amount of the second deformable part 1212.

[0040] For example, assuming that the weight of the heavy object is 100KG, the maximum range of the first sensor 11 and the second sensor 121 are both 100KG. After the heavy object is placed on the scale pan 20, the first deformation part 112 and the second deformation part 1212 are deformed synchronously, and the deformation amount of the first deformation part 112 corresponds to a detection value of 50KG, and the deformation amount of the second deformation part 1212 corresponds to a detection value of 50KG, that is, the weight of the heavy object = 50KG + 50KG.

[0041] In addition, by stacking the first sensor 11 and the second sensor 121, the weight of the heavy object is equivalent to the sum of the detection value of the first sensor 11 and the detection value of the second sensor 121. In this way, the detection range of the weighing sensor device 10 can be effectively increased.

[0042] Of course, multiple second sensors 121 can be set, and multiple second sensors 121 can be stacked on the first sensor 11 in sequence, so as to multiply the pressure on the first sensor 11, more effectively avoiding deformation of each sensor due to overload, and at the same time further increasing the detection range of the weighing sensor device 10.

[0043] In addition, the maximum measuring ranges of the first sensor 11 and the second sensor 121 are the same, or the maximum measuring range of the second sensor 121 is greater than the maximum measuring range of the first sensor 11 .

[0044] For further information, please refer to Figure 1 and Figure 2 A first contact 113 is provided on the side of the first deformable portion 112 facing away from the second sensor 121, and a second contact 1213 is provided on the side of the second deformable portion 1212 opposite to the first sensor 11. The second contact 1213 is provided at one end of the second deformable portion 1212 away from the second fixed portion 1211 to form a contact end, and the first contact 113 and the second contact 1213 are coaxially arranged. The first contact 113 is in contact with the supporting surface. After the weight is placed on the scale pan 20, when the first deformation portion 112 of the first sensor 11 reaches a certain deformation amount (at this time it does not exceed the maximum range of the first sensor 11), the first deformation portion 112 abuts against the second contact 1213, and the weight of the weight is borne jointly by the second sensor 121 and the first sensor 11. Since the deformation amplitude of the part of the first deformation portion 112 where the first contact 113 is provided is the largest, the first contact 113 and the second contact 1213 are coaxially arranged so that the second deformation portion 1212 can timely share the pressure exerted on the first deformation portion 112, thereby more effectively avoiding the first deformation portion 112 from causing irreversible deformation due to overload.

[0045] Specifically, please combine Figure 1 As shown, the first deformable portion 112 includes a first elastic segment 1121 and a second elastic segment 1122, the first elastic segment 1121 and the second elastic segment 1122 are connected to form a "C"-shaped structure, the first contact 113 is arranged at one end of the first elastic segment 1121 away from the second elastic segment 1122, and the end of the second elastic segment 1122 away from the first elastic segment 1121 is used for fixed connection with the first fixed portion 111; the second deformable portion 1212 includes a third elastic segment 1215 and a fourth elastic segment 1216, the third elastic segment 1215 and the fourth elastic segment 1216 are connected to form a "C"-shaped structure, the second contact 1213 is arranged at one end of the third elastic segment 1215 away from the fourth elastic segment 1216, and the end of the fourth elastic segment 1216 away from the third elastic segment 1215 is used for fixed connection with the second fixed portion 1211.

[0046] For further information, please refer to Figure 1 and Figure 2The first deformation part 112 is provided with a first resistance strain gauge 114, and the first resistance strain gauge 114 is located at one end of the second elastic section 1122 close to the first fixed part 111; the second deformation part 1212 is provided with a second resistance strain gauge 1214, and the second resistance strain gauge 1214 is located at one end of the fourth elastic section 1216 close to the second fixed part 1211. The first resistance strain gauge 114 can convert the deformation amount generated when the first deformation part 112 is subjected to pressure into an electrical signal, and the second resistance strain gauge 1214 can convert the deformation amount generated when the second deformation part 1212 is subjected to pressure into an electrical signal, so as to detect the weight of the heavy object.

[0047] Furthermore, the normal distance between the second contact point 1213 and the first deformable portion 112 is 0 mm-5 mm. It should be noted that the normal distance refers to the distance between the second contact point 1213 and the first deformable portion 112 when both the first deformable portion 112 and the second deformable portion 1212 are not deformed.

[0048] For further information, please refer to Figure 1 and Figure 2 The force distribution mechanism 12 further includes a separator 122, and the second fixed portion 1211 is connected to the first fixed portion 111 through the separator 122, so that the first deformable portion 112 and the second deformable portion 1212 are separated from each other. By arranging the separator 122 between the first sensor 11 and the second sensor 121, a suitable spacing is provided for the first deformable portion 112 and the second deformable portion 1212. After the deformation of the first deformation variable 112 of the first sensor 11 exceeds the spacing between the first sensor 11 and the second sensor 121, it abuts against the abutting end of the second deformable portion 1212. At this time, the second sensor 121 and the first sensor 11 jointly bear the weight of the heavy object, and the weight of the heavy object is equal to the sum of the corresponding detection value of the deformation variable before the abutment of the first deformable portion 112 and the second deformable portion 1212, the corresponding detection value of the continuous deformation variable after the abutment of the first deformable portion 112 and the second deformable portion 1212, and the corresponding detection value of the deformation variable of the second deformable portion 1212.

[0049] Of course, there are many ways to separate the first sensor 11 and the second sensor 121, such as a first boss is provided along the periphery of the first sensor 11 on the side facing the second sensor 121, and the second sensor 121 is stacked on the first boss; or a second boss is provided along the periphery of the second sensor 121 on the side facing the first sensor 11, and the second sensor 121 is stacked on the first sensor 11 via the second boss.

[0050] Embodiment 2

[0051] Please combine Figure 3As shown, in this embodiment, the force distribution mechanism 12 includes a limiting column 123, one end of which is fixedly connected to the scale pan 20 and the other end forms an abutting end. After placing the heavy object on the scale pan 20, when the first deformation part 112 of the first sensor 11 reaches a certain deformation amount (at this time, it does not exceed the maximum range of the first sensor 11), the first deformation part 112 abuts against the limiting column 123, and the limiting column 123 limits the first deformation part 112 from continuing to be deformed by force, effectively preventing the first deformation part 112 from being irreversibly deformed due to overload, and effectively preventing the first sensor 11 from being damaged due to overload. By preventing the first sensor 11 from overloading in the above manner, there is no need to increase the thickness of the first deformation part 112 of the first sensor 11, and the detection accuracy of the first sensor 11 is also effectively guaranteed.

[0052] For further information, please refer to Figure 3 The first contact point 113 is provided on the side of the first deformable portion 112 away from the limiting column 123, and the limiting column 123 is coaxially arranged with the first contact point 113. Since the deformation amplitude of the part of the first deformable portion 112 where the first contact point 113 is provided is the largest, by coaxially arranging the first contact point 113 and the limiting column 123, the deformation amount of the first deformable portion 112 can be abutted against the limiting column 123 in time, thereby limiting the first deformable portion 112 from continuing to be deformed by force, and more effectively avoiding the first deformable portion 112 from being irreversibly deformed due to overload.

[0053] Furthermore, the normal distance between the first deformable portion 112 and the limiting column 123 is 0 mm-5 mm. It should be noted that the normal distance refers to the distance between the first deformable portion 112 and the limiting column 123 when the first deformable portion 112 is not deformed.

[0054] Embodiment 3

[0055] Please combine Figure 4As shown, in the present embodiment, the force distribution mechanism 12 includes a limiting column 123 and one or more second sensors 121, the first sensor 11 and the second sensor 121 are stacked in sequence, the second sensor 121 includes a second fixed portion 1211 for connecting with the first fixed portion 111 and a second deformable portion 1212 connected to the second fixed portion 1211, one end of the second deformable portion 1212 away from the second fixed portion 1211 is provided with a portion for abutting with the first deformable portion 112, one end of the limiting column 123 is fixedly connected to the lower surface of the weighing pan 20 and the other end is used to abut with the second deformable portion 1212. After placing a heavy object on the scale pan 20, when the first deformation part 112 of the first sensor 11 reaches a certain deformation amount (at this time, it does not exceed the maximum range of the first sensor 11), the first deformation part 112 abuts against the abutting end of the second sensor 121, and the weight of the heavy object is jointly borne by the second sensor 121 and the first sensor 11; when the second deformation part 1212 reaches a certain deformation amount (at this time, neither the first sensor 11 nor the second sensor 121 exceeds the maximum range), the second deformation part 121 abuts against the limit column 123, so that the weight of the heavy object is not exceeded. The first deformation portion 112 and the second deformation portion 1212 are prevented from continuing to be compressed and deformed beyond their maximum range to cause irreversible deformation, and the first sensor 11 and the second sensor 121 are effectively prevented from being damaged due to overload. The above method prevents the first sensor 11 and the second sensor 121 from overloading, and there is no need to increase the thickness of the first deformation portion 112 of the first sensor 11 and the second deformation portion 1212 of the second sensor 121, which also effectively ensures the detection accuracy of the first sensor 11 and the second sensor 121.

[0056] It should be noted that when the weight of the heavy object exceeds the overlapping detection range of the first sensor 11 and the second sensor 121, in order to prevent the first deformation portion 112 of the first sensor 11 from exceeding the deformation limit, the elastic coefficient of the material used for the second sensor 121 is greater than the material used for the first sensor 11, or the thickness of the second sensor 121 is set to be greater than the thickness of the first sensor 11.

[0057] For further information, please refer to Figure 4A first contact 113 is provided on the side of the first deformation portion 112 away from the second sensor 121, and a second contact 1213 is provided on the side of the second deformation portion 1212 opposite to the first sensor 11. The second contact 1213 is provided at one end of the second deformation portion 1212 away from the second fixed portion 1211 to form a contact end. The first contact 113, the second contact 1213 and the limiting column 123 are coaxially arranged. Since the deformation amplitudes of the portion where the first deformation portion 112 is provided with the first contact 113 and the portion where the second deformation portion 1212 is provided with the second contact 1213 are the largest, by coaxially arranging the first contact 113, the second contact 1213 and the limiting column 123, the first deformation portion 112 can timely abut against the second contact 1213, so that the second deformation portion 1212 can timely distribute the pressure exerted on the first deformation portion 112, and the second deformation portion 1212 can timely abut against the limiting column 123, so that the limiting column 123 can timely limit the second deformation portion 1212 from continuing to be deformed by the force; in this way, it is more effective to avoid the first deformation portion 112 and the second deformation portion 1212 from causing irreversible deformation due to overload.

[0058] Furthermore, the normal spacing between the second contact point 1213 and the first deformable portion 112 is 0 mm-5 mm, and the normal spacing between the second deformable portion 1212 and the limiting column 123 is 0 mm-5 mm. It should be noted that the normal spacing refers to the distance between the second contact point 1213 and the first deformable portion 112 and between the second deformable portion 1212 and the limiting column 123 when both the first deformable portion 112 and the second deformable portion 1212 are not deformed.

[0059] Please combine Figure 5 As shown, an electronic scale includes a weighing pan 20 and at least one weighing sensor device 10 as mentioned above, and the weighing sensor device 10 is arranged at the bottom of the weighing pan 20.

[0060] Since the electronic scale adopts all the embodiments of the weighing sensor device 10, it has at least all the beneficial effects of the above embodiments, which will not be described one by one here.

[0061] For details, please continue to see Figure 5 A plurality of force transmission components 21 are provided at the bottom of the weighing pan 20 , and a weighing sensor device 10 is correspondingly provided at one end of each force transmission component 21 away from the weighing pan 20 .

[0062] Please combine Figure 6As shown, in one embodiment, this embodiment corresponds to the aforementioned embodiment 1, and is described by taking a pair of force transmission components 21 and a weighing sensor device 10 as an example. The force transmission component 21 is a hollow structure, and the weighing sensor device 10 is connected to the end of the force transmission component 21 away from the weighing pan 20. Specifically, the force transmission component 21 is connected to the second fixed portion 1211 of the second sensor 121, and the outer contour of the force transmission component 21 is adapted to the outer contours of the first fixed portion 111 and the second fixed portion 1211. During operation, after a heavy object is placed on the scale pan 20, the gravity of the heavy object is transmitted to the second fixing portion 1211 of the second sensor 121, the first fixing portion 111 of the first sensor 11 and the first contact 113 of the first sensor 11 in sequence through the force transmission component 21, and then the first deformation portion 112 is deformed. When the first deformation portion 112 reaches a certain deformation amount (which does not exceed the maximum range of the first sensor 11 at this time), the first deformation portion 112 abuts against the second contact 1213 of the second sensor 121, and the first deformation portion 112 continues to deform to drive the second deformation portion 1212 to deform. When the first sensor 112 is deformed (at this time, neither the first sensor 11 nor the second sensor 121 exceeds the maximum range), the second sensor 121 and the first sensor 11 jointly bear the weight of the heavy object to prevent the first deformation portion 112 from continuing to be compressed and deformed and exceeding its own maximum range, thereby causing the first deformation portion 112 to undergo irreversible deformation, thereby effectively preventing the first sensor 11 from being damaged due to overload. By preventing the first sensor 11 from overloading in the above manner, there is no need to increase the thickness of the first deformation portion 112 of the first sensor 11, and the detection accuracy of the first sensor 11 is also effectively guaranteed.

[0063] Please combine Figure 7As shown, in another embodiment, this embodiment corresponds to the aforementioned embodiment 2, and is described by taking a pair of force transmission components 21 and a weighing sensor device 10 as an example. The force transmission component 21 is a hollow structure, and the weighing sensor device 10 is connected to the end of the force transmission component 21 away from the weighing pan 20. Specifically, the force transmission component 21 is connected to the first fixed portion 111 of the first sensor 11, and the outer contour of the force transmission component 21 is adapted to the outer contour of the first fixed portion 111. The limiting column 123 is disposed in the force transmission component 21, and the end of the limiting column 123 away from the first sensor 11 is fixedly connected to the lower surface of the weighing pan 20. During operation, after a heavy object is placed on the scale pan 20, the gravity of the heavy object is transmitted to the first fixed portion 111 of the first sensor 11 and the first contact 113 of the first sensor 11 in sequence through the force transmission component 21, and then the first deformation portion 112 is deformed. When the first deformation portion 112 reaches a certain deformation amount (at this time, it does not exceed the maximum range of the first sensor 11), the first deformation portion 112 abuts against the limit column 123, and the limit column 123 limits the first deformation portion 112 from continuing to be deformed by force, thereby effectively preventing the first deformation portion 112 from being irreversibly deformed due to overload, thereby effectively preventing the first sensor 11 from being damaged due to overload, and preventing the first sensor 11 from being overloaded in the above manner. There is no need to increase the thickness of the first deformation portion 112 of the first sensor 11, and the detection accuracy of the first sensor 11 is also effectively guaranteed.

[0064] Please combine Figure 8As shown, in another embodiment, this embodiment corresponds to the aforementioned third embodiment, the force transmission component 21 is a hollow structure, and the weighing sensor device 10 is connected to the end of the force transmission component 21 away from the weighing pan 20. Specifically, the force transmission component 21 is connected to the second fixed portion 1211 of the second sensor 121, and the outer contour of the force transmission component 21 is adapted to the outer contours of the first fixed portion 111 and the second fixed portion 1211. The limiting column 123 is disposed in the force transmission component 21, and the end of the limiting column 123 away from the first sensor 11 is fixedly connected to the lower surface of the weighing pan 20. During operation, after a heavy object is placed on the scale pan 20, the gravity of the heavy object is transmitted to the second fixing portion 1211 of the second sensor 121, the first fixing portion 111 of the first sensor 11 and the first contact 113 of the first sensor 11 in sequence through the force transmission component 21, and then the first deformation portion 112 is deformed. When the first deformation portion 112 of the first sensor 11 reaches a certain deformation amount (at this time, it does not exceed the maximum range of the first sensor 11), the first deformation portion 112 abuts against the second contact 1213 of the second sensor 121, and the weight of the heavy object is borne by the second sensor 121 and the first sensor 11 together. When the second deformation portion 1212 reaches a certain deformation amount (at this time, the first deformation portion 112 of the first sensor 11 The second deformation part 121 abuts against the limit column 123 to prevent the first deformation part 112 and the second deformation part 1212 from continuing to be compressed and deformed and exceeding their own maximum ranges to cause irreversible deformation, thereby effectively avoiding damage to the first sensor 11 and the second sensor 121 due to overload. The above method prevents the first sensor 11 and the second sensor 121 from overloading, and there is no need to increase the thickness of the first deformation part 112 of the first sensor 11 and the second deformation part 1212 of the second sensor 121, which also effectively ensures the detection accuracy of the first sensor 11 and the second sensor 121.

[0065] For further information, please refer to Figure 5 A display screen 22 electrically connected to each weighing sensor device 10 is provided on the surface of the weighing pan 20, and the display screen 22 is used to display the weight value of the heavy object.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A weighing sensor device for converting the load-bearing capacity of a scale pan of an electronic scale into an electrical signal, characterized in that: The invention comprises a first sensor and a force dividing mechanism disposed between the first sensor and the scale pan, the force dividing mechanism being connected to the scale pan, the first sensor comprising a first fixed portion and a first deformable portion connected to the first fixed portion, the force dividing mechanism being provided with an abutting end for abutting against the first deformable portion; The first deformation portion includes a first elastic segment and a second elastic segment, and the first elastic segment and the second elastic segment are connected to form a "C"-shaped structure.

2. The weighing sensor device according to claim 1, characterized in that: The force distribution mechanism includes one or more second sensors, the first sensor and the second sensor are stacked in sequence, the second sensor includes a second fixed part for connecting to the first fixed part and a second deformation part connected to the second fixed part, and the abutment end is provided at one end of the second deformation part away from the second fixed part.

3. The weighing sensor device according to claim 2, characterized in that: A first contact is provided on the side of the first deformable portion facing away from the second sensor, and a second contact is provided on the side of the second deformable portion opposite to the first sensor. The second contact is provided at an end of the second deformable portion away from the second fixed portion to form the abutting end, and the first contact is coaxially arranged with the second contact.

4. The weighing sensor device according to claim 2, characterized in that: The force distribution mechanism further includes a separator, and the second fixing portion is connected to the first fixing portion via the separator, so that the first deformation portion and the second deformation portion are separated from each other.

5. The weighing sensor device according to claim 1, characterized in that: The force distribution mechanism comprises a limiting column, one end of which is fixedly connected to the scale pan and the other end of which forms the abutting end.

6. The weighing sensor device according to claim 5, characterized in that: A first contact point is provided on a side of the first deformation portion away from the limiting column, and the limiting column is coaxially arranged with the first contact point.

7. The weighing sensor device according to claim 1, characterized in that: The force distribution mechanism includes a limit column and at least one second sensor, the first sensor and the second sensor are stacked in sequence, the second sensor includes a second fixed portion connected to the first fixed portion and a second deformable portion connected to the second fixed portion, the second deformable portion is provided with the abutting end at one end away from the second fixed portion, one end of the limit column is fixedly connected to the weighing pan and the other end is used to abut against the second deformable portion.

8. The weighing sensor device according to claim 7, characterized in that: A first contact is provided on the side of the first deformation part away from the second sensor, and a second contact is provided on the side of the second deformation part opposite to the first sensor. The second contact is provided at an end of the second deformation part away from the second fixed part to form the abutting end, and the first contact, the second contact and the limiting column are coaxially arranged.

9. An electronic scale, characterized in that: It comprises a weighing pan and at least one weighing sensor device as claimed in any one of claims 1 to 8, wherein the weighing sensor device is arranged at the bottom of the weighing pan.

10. The electronic scale according to claim 9, characterized in that: A plurality of force transmission components are arranged at the bottom of the weighing pan, and a weighing sensor device is correspondingly arranged at one end of each force transmission component away from the weighing pan.

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