CN104838243A - Electronic scale - Google Patents

Abstract

An electronic scale, comprising a loading board (1), a first precision weighing assembly (2) for supporting the loading board (1), a first precision weighing assembly for supporting the loading board (1) (2) the second precision weighing assembly (3), and the force guide (4) for transmitting the pressure on itself to the second precision weighing assembly (2); the first precision weighing assembly (2) It includes an elastic supporting part (21); the force guiding part (4) is provided with a force guiding support part (40), and the loading board (1) is provided with a guiding force crimping part (10); the loading board (1) is not When carrying an object, the force-guiding crimping portion of the loading plate (1) is higher than the force-guiding support portion (40) of the force-guiding member (4); when the loading plate (1) is carrying an object, the loading plate (1) is Press down on the elastic support (21) and move down. After the load plate (1) is stressed to a certain extent, its force-guiding crimping part (10) is crimped on the force-guiding supporting part of the force-guiding part (4). (40) up. In addition to serving as both an electronic weight scale and a kitchen electronic scale, the present invention can effectively prevent damage to the kitchen electronic scale when the weight of the loaded object exceeds the maximum range of the kitchen electronic scale.

Description

an electronic scale

technical field

The invention belongs to the technical field of electronic balance structure design, and in particular relates to an electronic balance.

Background technique

The weight electronic scales currently on the market are mainly composed of a loading board, a display screen, an adjustment switch, a power module and a load cell for supporting the loading board. When the weight of the loaded object exceeds the preset value, the display screen will start to display the value. The preset value is generally 5 kg; in addition, the maximum measuring range of this kind of weight electronic scale is generally 180 kg, and the division value is 100 g, so the error is large , so this traditional body weight electronic scale can not be used as other things except for weighing body weight on weekdays, especially it cannot be used as a kitchen electronic scale. And existing kitchen electronic scale, its graduation value can reach 1 gram, but its measuring range is generally no more than 50 kilograms, so can not use as weighing scale. There is also an electronic scale with a division value of 2 grams and a measuring range of 150 kilograms in the market, which is made of a load cell with high precision and a large measuring range, but its price is very expensive and cannot be popularized.

Contents of the invention

The object of the present invention is to provide a low-cost electronic scale that can be used not only as a large-scale, low-precision weight electronic scale, but also as a small-scale, high-precision kitchen electronic scale.

The first technical solution to achieve the object of the present invention is: an electronic balance, including a loading plate, a first precision weighing assembly for supporting the loading plate; it is characterized in that: it also includes a loading plate for supporting the loading The second precision weighing component of the first precision weighing component, and the force guide for transmitting the pressure on itself to the second precision weighing component; the first precision weighing component includes an elastic support; There is a force-guiding support part, and a force-guiding crimping part is provided on the loading plate; when the loading plate does not carry an object, the force-guiding crimping part of the loading plate is higher than the force-guiding supporting part of the force-guiding part; When the object is loaded, the loading board presses down on the elastic supporting member to move down. After the loading board is stressed to a certain extent, its force-guiding crimping part is crimped on the force-guiding supporting part of the force-guiding member.

In the above solution, when the force-guiding crimping part of the carrier plate is forced to move down until it is crimped on the force-guiding supporting part of the force-guiding part, the elastic supporting part is in an elastic deformation state.

The second technical solution to achieve the object of the present invention is: an electronic balance, including a loading plate, a first precision weighing assembly for supporting the loading plate; it is characterized in that: it also includes a loading plate for supporting the loading A second precision weighing component of a precision weighing component, and a force guide for transmitting the pressure it receives to the second precision weighing component; the first precision weighing component includes an elastic support; the force guide includes a The load-bearing plate with the support hole of the force-guiding support part, the bottom wall of the load plate is used as the force-guiding crimping part; each first precision weighing assembly passes through the corresponding support hole and is connected to the bottom wall of the load plate; When the object board is not loaded with objects, the force-guiding crimping part of the object-loading board is higher than the force-guiding supporting part of the force-guiding member; when the object board is loaded with objects, the bottom wall of the object-loading board presses down on the elastic support and moves down , after the loading board is stressed to a certain extent, its force-guiding crimping part is crimped on the force-guiding support part of the force-guiding member.

In the above solution, when the force-guiding crimping part of the carrier plate is forced to move down until it is crimped on the force-guiding supporting part of the force-guiding part, the elastic supporting part is in an elastic deformation state.

The third technical solution to achieve the object of the present invention is: an electronic balance, including a loading plate, a first precision weighing assembly for supporting the loading plate; it is characterized in that: it also includes a loading plate for supporting the loading The second precision weighing component of the first precision weighing component, and the force guide for transmitting the pressure on itself to the second precision weighing component; the first precision weighing component includes an elastic support and a first precision force measuring component The sensor; the second precision weighing assembly includes a second precision force sensor; the force guiding part is provided with a force guiding support part, and the load plate is provided with a force guide crimping part; the load plate is crimped and arranged on the elastic support , the elastic support member is crimped and set on the first precision load cell, and the first precision load sensor is directly crimped and set on the second precision load cell or crimped and set on the force guide; the loading plate does not carry objects , the force-guiding crimping portion of the loading plate is higher than the guiding supporting portion of the force-guiding member; After a certain degree, the force-guiding crimping part is crimped on the force-guiding supporting part of the force-guiding member.

In the above solution, the second precision weighing assembly further includes a supporting foot for supporting the second precision load cell, and the bottom end of the supporting foot is the lowest end of the electronic scale.

In the above solution, when the force-guiding crimping part of the carrier plate is forced to move down until it is crimped on the force-guiding supporting part of the force-guiding part, the elastic supporting part is in an elastic deformation state.

The fourth technical solution to achieve the object of the present invention is: an electronic balance, including a loading board, a first precision weighing assembly for supporting the loading board; it is characterized in that: it also includes a loading board for supporting the loading board and a first The second precision weighing component of the first precision weighing component, and the force guide for transmitting the pressure on itself to the second precision weighing component; the first precision weighing component includes an elastic support and a first precision force measuring component sensor; the second-accuracy weighing assembly includes a second-accuracy load cell; the force-guiding member is provided with a force-guiding supporting portion, and the loading plate is provided with a guiding force crimping portion; the loading plate is crimped and arranged on the first precision measuring On the force sensor, the first precision force sensor is crimped and set on the elastic support, and the elastic support is directly crimped and set on the second precision force sensor or crimped and set on the force guide; the loading plate does not carry objects , the force-guiding crimping portion of the loading plate is higher than the guiding supporting portion of the force-guiding member; After a certain degree, the force-guiding crimping part is crimped on the force-guiding supporting part of the force-guiding member.

In the above solution, the second precision weighing assembly further includes a supporting foot for supporting the second precision load cell, and the bottom end of the supporting foot is the lowest end of the electronic scale.

In the above solution, when the force-guiding crimping part of the carrier plate is forced to move down until it is crimped on the force-guiding supporting part of the force-guiding part, the elastic supporting part is in an elastic deformation state.

The fifth technical solution to achieve the object of the present invention is: an electronic balance, including a loading plate, a first precision weighing assembly for supporting the loading plate; it is characterized in that: it also includes a loading plate for supporting the loading The second precision weighing component of the first precision weighing component, and the force guide for transmitting the pressure on itself to the second precision weighing component; the first precision weighing component includes an elastic support and a first precision force measuring component sensor; the elastic supporting member includes a threaded spring, an upper supporting member arranged at the top end of the threaded spring and a lower supporting member arranged at the bottom end of the threaded spring; the second precision weighing assembly includes a second precision load cell; the force guiding member is provided with a guide The force supporting part is provided with a force-guiding crimping part on the loading plate; the elastic supporting part is arranged above or below the first precision load cell; when the elastic supporting part is arranged above the first precision load cell, the loading plate The crimping is set on the upper support member, the crimping of the lower support is set on the first precision load cell, and the crimping of the first precision load cell is set on the second precision load cell; when the elastic support is set on the first When the precision load cell is below, the loading plate is crimped on the first precision load cell, the first precision load cell is crimped on the upper support, and the lower support is crimped on the second precision load cell Above; when the loading plate does not carry objects, the force-guiding crimping part of the loading plate is higher than the force-guiding supporting part of the force-guiding member; , after the loading board is stressed to a certain extent, its force-guiding crimping part is crimped on the force-guiding support part of the force-guiding member.

In the above solution, when the force-guiding crimping portion of the carrier plate is forced to move down until it is crimped on the force-guiding support portion of the force-guiding member, the threaded spring is in an elastic deformation state.

When the present invention is in use, in addition to serving as both an electronic weight scale and an electronic kitchen scale, it can also effectively prevent damage to the electronic kitchen scale when the weight of the loaded object exceeds the maximum range of the electronic kitchen scale. In addition, the present invention can be made by using cheap force measuring sensors already on the market, so the cost is greatly reduced and it is easy to popularize.

Description of drawings

Fig. 1 is a kind of three-dimensional structure schematic diagram of the first structure of the present invention;

Fig. 2 is a schematic diagram of a three-dimensional structure of the electronic scale shown in Fig. 1 viewed from another angle;

Fig. 3 is a schematic structural view of the electronic scale shown in Fig. 1 as a kitchen electronic scale;

Fig. 4 is a kind of partially enlarged schematic diagram of place A in Fig. 3;

Fig. 5 is a schematic structural view of the electronic scale shown in Fig. 1 as a weight electronic scale;

Fig. 6 is a kind of partially enlarged schematic diagram of place B in Fig. 5;

Fig. 7 is a schematic diagram of a three-dimensional structure of the first precision load cell in the electronic scale shown in Fig. 1;

Fig. 8 is a schematic diagram of a three-dimensional structure of the first precision load cell shown in Fig. 7 viewed from another angle;

Fig. 9 is a schematic diagram of a three-dimensional structure of the second precision load cell in the electronic balance shown in Fig. 1;

Fig. 10 is a schematic diagram of a three-dimensional structure of the second precision load cell shown in Fig. 9 viewed from another angle;

Fig. 11 is a side view structural schematic diagram of the second structure of the present invention;

Fig. 12 is a partially enlarged schematic diagram of place C in Fig. 11;

Fig. 13 is a schematic side view of the electronic scale shown in Fig. 11 when it is in another state;

Fig. 14 is a schematic diagram of a three-dimensional structure of the third structure of the present invention;

Fig. 15 is an exploded view of the electronic scale shown in Fig. 14;

Fig. 16 is a side view structural schematic diagram of the electronic balance shown in Fig. 14;

Fig. 17 is a partially enlarged schematic diagram at D in Fig. 16;

Fig. 18 is a schematic side view of the electronic scale shown in Fig. 16 when it is in another state;

Fig. 19 is a side view structural schematic diagram of the fourth structure of the present invention;

Fig. 20 is a partially enlarged schematic diagram of E in Fig. 19;

Fig. 21 is a schematic side view of the electronic scale shown in Fig. 19 when it is in another state;

Fig. 22 is a side view structural schematic diagram of the fifth structure of the present invention;

Fig. 23 is a partially enlarged schematic diagram at F in Fig. 22;

Fig. 24 is a schematic side view of the electronic scale shown in Fig. 22 when it is in another state;

Fig. 25 is a schematic side view of the sixth structure of the present invention;

Fig. 26 is a partially enlarged schematic diagram at G in Fig. 25;

Fig. 27 is a schematic side view of the electronic scale shown in Fig. 25 when it is in another state;

Fig. 28 is a schematic side view of the seventh structure of the present invention;

Fig. 29 is a schematic side view of the electronic scale shown in Fig. 28 when it is in another state;

Fig. 30 is a schematic side view of the eighth structure of the present invention;

Fig. 31 is a schematic side view of the electronic scale shown in Fig. 30 when it is in another state;

Fig. 32 is a schematic side view of the ninth structure of the present invention;

Fig. 33 is a partially enlarged schematic diagram at H in Fig. 32;

Fig. 34 is a schematic side view of the electronic scale shown in Fig. 32 when it is in another state;

Fig. 35 is a schematic side view of the tenth structure of the present invention;

Fig. 36 is a partially enlarged schematic diagram of place I in Fig. 35;

Fig. 37 is a schematic side view of the electronic scale shown in Fig. 35 when it is in another state;

Fig. 38 is a schematic side view of the eleventh structure of the present invention.

Detailed ways

(Embodiment 1): The present embodiment is a kind of double-precision electronic balance, as shown in Fig. 1 to Fig. 10, comprises object board 1, display screen 11, adjusting switch 12, four the first four for supporting object board A precision weighing assembly 2, four second precision weighing assemblies 3 for supporting the object plate and the first precision weighing assembly, and four second precision weighing assemblies for transmitting the pressure on itself to the second precision weighing assembly Force guide 4.

In the present embodiment, the specific structure of the second precision weighing assembly 3 is as follows: it includes a deck 34 having an accommodation slot 33 and a slot, a second precision load cell 31 arranged in the slot, and abutting on the second The supporting foot 32 on the precision load cell 31, the spring cover 35 that covers the opening at the bottom of the accommodating groove 33 and has a center positioning hole 351; the supporting foot 32 in this embodiment includes a cylindrical metal supporting block 321 and bonded to The anti-slip pad 322 at the bottom of the support block 321, the support block 321 is arranged in the central positioning hole of the spring cover, and the anti-slip pad is lower than the spring cover. In this embodiment, the bottom end of the anti-skid pad is used as the bottom end of the supporting foot, which is the lowest end of this embodiment. The specific structure of the spring 35 is to include an inner ring, an outer ring and a plurality of spiral arms connecting the inner ring and the outer ring. The center positioning hole is arranged on the inner ring, and its function is to locate the metal support block so that the metal support block The pressure on itself is transmitted vertically downwards, and it also prevents the deck from directly transmitting the pressure on itself to the metal support block through the spring cover. Since its structure and technical effects are already well known to those skilled in the art, this embodiment will no longer describe it. to detail.

The force guiding member 4 in this embodiment includes a bottom wall 41 provided with a snap-in groove, a tubular support wall 42 enclosing and forming a cavity, and a positioning surface arranged on the inner wall of the tubular support wall. The wall 42 is a horizontal annular surface arranged radially, and the bottom wall 41 of the force guiding member is crimped and arranged on the top end of the clamping seat 34 .

In this embodiment, the top end of the tubular support wall 42 serves as the force-guiding supporting portion 40 , and the bottom wall of the loading plate serves as the force-guiding crimping portion 10 .

In this embodiment, each first-accuracy weighing assembly 2 is arranged in the cavity of a corresponding force-guiding member 4, and its specific structure is as follows: it includes an elastic support member 21, a first-accuracy load cell 22 and a center limit hole. The elastic cover 24 of 241; Described elastic support member comprises thread spring 211, is arranged on the upper support member 212 of thread spring top end, is arranged on the lower support member 213 of thread spring bottom end, and thread spring and upper support member and lower support member pass through respectively The fastening screws are connected; the outer peripheral edge of the elastic cover is crimped and bonded and fixed on the positioning surface of the force guide, the lower support 213 is arranged in the center limit hole 241 of the elastic cover, and the upper support is bonded and fixed on the load on the bottom wall of the board. The specific structure and technical effect of the elastic cover 24 are similar to the above-mentioned spring cover 35, and also include an inner ring, an outer ring, and a plurality of spiral arms connecting the inner ring and the outer ring. The center limiting hole 241 is arranged on the inner ring, and its The function is to locate the lower support in its center limit hole, let the lower support transmit its own pressure vertically downward, and also prevent the lower support from directly transmitting its own pressure to the force guide through the elastic cover Since the structure and technical effect of the tubular support wall are well known to those skilled in the art, it will not be described in detail in this embodiment.

The first precision load cell 22 is arranged in the engagement groove of the bottom wall 41 of the force guide member, and the bottom wall of the lower support member is pressed against the first precision load cell.

In this embodiment, as shown in Fig. 7 and Fig. 8, the first precision load cell 22 is a commonly used kitchen weighing module, its measuring range is 0 to 20 kilograms, and the division value is 1 gram; The force sensor includes a first fixing part 221 , a first force-bearing deformation part 222 and a first resistance strain gauge 223 . The first fixing part of the first precision load cell is clamped and fixed in the clamping groove of the bottom wall 41 of the force guide member, and the lower support part of the elastic support part is crimped on the first force-bearing deformation part.

In the present embodiment, as shown in Fig. 9 and Fig. 10, the second precision load cell 31 is a commonly used human body weight weighing sensor, its range is 5 kg to 180 kg, and the division value (also called precision) is 100 grams; the second precision load cell 31 includes a second fixed portion 311 , a second force-bearing deformation portion 312 and a second resistance strain gauge 313 . The second fixing part 311 of the second precision load cell is clamped and fixed in the slot of the card seat 34 , and the support block 321 is abutted against the second load-bearing deformation part 312 .

In this embodiment, the first-precision load cell and the second-precision load cell can be widely circulated and relatively cheap load cells on the market, thereby effectively reducing manufacturing costs.

In the free state, that is, when no object is placed on the loading plate, the top of the upper support in the elastic support is higher than the top of the tubular support wall 42 in the force guide, so that the bottom wall 10 of the loading plate is higher than the guide. The top of the force piece. When the loaded object is placed on the loading plate and the weight of the loaded object is less than 20 kg, by selecting an appropriate thread spring, the bottom wall of the loading plate is always higher than the force guide during the downward movement of the loading plate under force. And it is within the elastic deformation range of the threaded spring. The load plate transmits all the pressure of the loaded object to the first precision load cell through the elastic support, and then to the second precision load cell. At this time, the display screen can display the first precision by adjusting the switch or the intelligent control circuit. The weight value weighed by the weighing component ignores the weighing value of the second precision weighing component, and the weighing accuracy in this process can reach 1 gram, so this embodiment can be used as a kitchen electronic scale.

When the weight of the loaded object exceeds 20 kg, the loading plate will move down until it is crimped on the force guiding member, specifically, the bottom wall of the loading plate as the force guiding crimping part 10 is crimped on at the same time as the force guiding supporting part. 40 on the top end of the tubular support wall 42, and on the upper support in the first precision weighing assembly. Its working principle is: the loading plate transmits part of the pressure of the loaded object to the first precision load cell through the elastic support, and then to the second precision load cell; at the same time, the loading plate also passes the rest of the pressure of the loaded object through The force guide is directly transmitted to the second precision load cell. During this process, the deformation of the elastic support will not increase, so the partial pressure transmitted to the first precision load cell through the elastic support will not increase. Large, by selecting an appropriate threaded spring, this part of the pressure will not exceed the elastic deformation tolerance range of the first precision load cell, that is, it will not damage the first precision load cell. At this time, by adjusting the switch or the intelligent control circuit, the display screen can display the weight value weighed by the second precision weighing component, ignoring the weighing value of the first precision weighing component, and the weighing accuracy in this process can reach 100 grams. Therefore, this embodiment can also be used as an electronic weight scale.

(Embodiment 2): This embodiment is basically the same as Embodiment 1, the difference is: as shown in Figure 11 to Figure 13, the force guide 4 in this embodiment and the deck in the second precision weighing assembly 34 is integrally made by injection molding. Compared with Embodiment 1, the force guide in this embodiment is no longer provided with a separate bottom wall 41, but directly uses the top wall of the card seat 34 as the force guide in Embodiment 1. Part bottom wall 41.

In addition, the specific structure of the first precision weighing assembly in this embodiment is as follows: it includes a mounting base 27 provided with a slot and an accommodating cavity, and a base that covers the bottom opening of the accommodating cavity in the mounting base and has a central through hole. The elastic cover 28 , the first precision load cell 22 located in the accommodating cavity and snapped into the slot, and the elastic supporting member 21 . The top of mounting seat 27 is bonded and fixed on the bottom wall of the loading plate; elastic support member 21 comprises threaded spring 211, upper support member 212 and lower support member 213, and the top of upper support member is arranged in the central through hole of elastic cover, And abutted on the first precision load cell, the lower support member is crimped and arranged on the deck 34 in the second precision weighing assembly. In the free state, the top end of the first precision weighing assembly 2 is higher than the force guiding support portion 40 of the force guiding member. In this embodiment, the first fixing part 2221 of the first precision weighing assembly is snapped into the slot of the seating seat, and the first force-bearing deformation part 222 is pressed against the top end of the upper support member 212 . The specific structure and technical effect of the elastic cover 28 are similar to the elastic cover 24 in Embodiment 1, and also include an inner ring, an outer ring, and a plurality of spiral arms connecting the inner ring and the outer ring, and the central through hole is arranged on the inner ring Its function is to locate the upper support in its center limit hole, so that the upper support can transmit its own pressure vertically downward, and also prevent the mounting seat from directly transmitting the pressure to the upper support through the spring cover components; since its structure and technical effects are well known to those skilled in the art, it will not be described in detail in this embodiment.

The working principle of this embodiment is: when the pressure of the loaded object on the loading plate is less than the maximum range of the first precision load cell, the force-guiding crimping part 10 of the loading plate is always higher than the force-guiding support of the force-guiding member Part 40, the loading plate first transmits all the pressure of the loaded object to the first precision force sensor, and then transmits it to the second precision force sensor through the elastic support. At this time, the display screen can be adjusted by adjusting the switch or the intelligent control circuit. The weight value weighed by the first precision weighing component is displayed, and the weighing value weighed by the second precision weighing component is ignored. The weighing accuracy in this process can reach 1 gram, so this embodiment can be used as a kitchen electronic scale. When the pressure of the loaded object on the loading plate is greater than the maximum range of the first precision load cell, the force guiding crimping portion 10 of the loading plate is crimped on the force guiding support portion 40 of the force guiding member and the first precision scale at the same time. On the heavy component; the loading plate transmits part of the pressure of the loaded object to the elastic support through the first precision load cell, and then to the second precision load cell; at the same time, the loading plate also transmits the rest of the pressure of the loaded object through the guide The force piece is directly transmitted to the second precision load cell. During this process, the deformation of the elastic support will not increase any more, so the pressure exerted by the loading plate on the first precision sensor will not increase any more. By selecting an appropriate The threaded spring can make this part of the pressure not exceed the elastic deformation tolerance range of the first precision load cell, that is, it will not damage the first precision load cell. At this time, by adjusting the switch or the intelligent control circuit, the display screen can display the weight value weighed by the second precision weighing component, ignoring the weighing value of the first precision weighing component, and the weighing accuracy in this process can reach 100 grams. Therefore, this embodiment can also be used as an electronic weight scale.

Through the comparison between this embodiment and Embodiment 1, it can be proved that the position of the elastic supporting member can be varied and need not be limited to a specific position.

(Example 3)

This embodiment is basically the same as Embodiment 1, except that, as shown in Figures 14 to 18, this embodiment also sets a square shape with four circular support holes 51 on the top of the tubular support wall in the force guide. The load-bearing plate 5 is used as the force-guiding supporting portion 40 of the force-guiding member in this embodiment, and the bottom wall of the loading plate is still used as the force-guiding crimping portion 10 .

In this embodiment, in the free state, the upper support member 212 of each elastic support member passes through a corresponding support hole 51 and is bonded and fixed on the bottom wall of the loading board, so that the force guiding crimping portion 10 of the loading board is higher than The force-guiding support part 40 of the force-guiding member; when the weight of the object on the loading plate exceeds a certain level, the loading plate moves down and is crimped on the load-bearing plate, that is, the force-guiding crimping part 10 of the loading plate is crimped on the On the force guiding supporting part 40 of the force guiding member.

In this embodiment, the shape of the load-bearing plate 5 is a flat plate, and its area is larger than that of the loading plate. In fact, the load-bearing plate in this embodiment is not only used as the force-guiding support part 40 of the force-guiding member, but also can be used as an auxiliary loading plate; for example, when weighing a small object, place it directly on the loading plate 1 for weighing , when used as a human body scale, then directly stand on the load-bearing plate 5 to weigh, because the soles are generally dirty, this way of use can avoid making the load-bearing plate 1 dirty.

In addition, the display screen 11 and the adjustment switch 12 in Embodiment 1 are arranged on the loading board, but in this embodiment, they are arranged on the bearing board.

The working principle of this embodiment is: when the pressure of the loaded object on the loading plate is less than the maximum range of the first precision load cell, the force-guiding crimping part 10 of the loading plate is always higher than the force-guiding support of the force-guiding member Part 40, the loading plate first transmits all the pressure of the loaded object to the elastic supporting member, and then transmits it to the second precision load cell through the first precision load cell. At this time, this embodiment can be used as a kitchen electronic scale.

When the pressure of the loaded object on the loading plate is greater than the maximum range of the first precision load cell, the force guiding crimping portion 10 of the loading plate is crimped on the force guiding support portion 40 of the force guiding member and the first precision scale at the same time. On the heavy component; the loading plate transmits part of the pressure of the loaded object to the first precision load cell through the elastic support, and then to the second precision load cell; at the same time, the loading plate also passes the rest of the pressure of the loaded object through the guide The force piece is directly transmitted to the second precision load cell, and this embodiment can also be used as an electronic weight scale.

(Embodiment 4): This embodiment is basically the same as Embodiment 3, the difference is: as shown in Figure 19 to Figure 21, in this embodiment, the force guiding member 4 is crimped and arranged on the second precision weighing assembly 3 on the load-bearing plate 5; the load-bearing plate 5 includes four crimping plate areas 52 for crimping on the second precision weighing assembly 3, and four concave ones for arranging the first precision weighing assembly 2, the top wall of the load-bearing plate 5 serves as the force-guiding support portion 40; the bottom wall of the loading plate still serves as the force-guiding crimping portion 10. In this embodiment, each placement groove 53 deviates from the second precision weighing assembly, so that the first precision weighing assembly 2 and the second precision weighing assembly 3 form a mutually staggered arrangement, that is, each first precision weighing assembly in this embodiment The precision precision weighing component 2 is no longer arranged directly above the second precision weighing component 3 , and this structure can reduce the overall height.

In this embodiment, the top wall of the deck 34 in each second precision weighing assembly is directly bonded and fixed on the bottom wall of the crimping plate portion 52 of the bearing plate 5 .

In this embodiment, each first precision weighing assembly 2 is arranged in a corresponding placement groove 53, and the specific structure of each first precision weighing assembly 2 is as follows: it includes an elastic support 21, a first precision load cell 22 and a The elastic cover 24 of the central limit hole 241; the elastic support includes a threaded spring 211, an upper support 212 arranged at the top end of the threaded spring, a lower support 213 arranged at the bottom end of the threaded spring; the top end of the upper support is bonded and fixed On the bottom wall of the loading plate, the lower supporting part is arranged in the center limit hole of the elastic cover, and the bottom end of the lower supporting part is arranged on the first precision load cell 22 in crimping contact. In the free state, the upper supporting member 212 is higher than the placement groove 53, so that the bottom wall of the loading board is higher than the bearing board.

In this embodiment, a positioning surface arranged horizontally is provided in each placement groove 53, and a positioning slot is also provided on the bottom wall 531 of each placement groove; the bottom wall of the outer peripheral edge of the elastic cover is bonded and fixed on the positioning surface. The first fixing part 221 of the precision load cell is clamped and crimped in the positioning slot, and the lower support member is crimped on the first force-bearing deformation part 222 .

The working principle of this embodiment is: when the pressure of the loaded object on the loading plate is less than the maximum range of the first precision load cell, the force-guiding crimping part 10 of the loading plate is always higher than the force-guiding support of the force-guiding member Part 40, the load plate first transmits all the pressure of the loaded object to the first precision load cell through the elastic support, and then passes it to the second precision load cell through the force guide 4. At this time, this embodiment can be used as a kitchen Electronic scales are used.

When the pressure of the loaded object on the loading plate is greater than the maximum range of the first precision load cell, the force guiding crimping portion 10 of the loading plate is crimped on the force guiding support portion 40 of the force guiding member and the first precision scale at the same time. On the heavy component; the loading plate transmits part of the pressure of the loaded object to the first precision load cell through the elastic support, and then passes it to the second precision load cell through the force guide; at the same time, the loading plate also transfers the pressure of the loaded object The rest of the pressure is directly transmitted to the second precision load cell through the force guide, and this embodiment can be used as an electronic weight scale.

In addition, from accompanying drawing 19 to Fig. 21, the size of the load-bearing plate is the same as that of the load-bearing plate in this embodiment; but in practice, the load-bearing plate can also be made smaller and the load-bearing plate smaller Large, so that the load-bearing plate can be used not only as a force guide, but also as an auxiliary load plate; for example, when weighing a small object, place it directly on the load plate 1 for weighing; Stand on the load-bearing plate 5 and weigh, because the soles of shoes are generally dirty, this way of use can avoid soiling the load-bearing plate 1.

(Embodiment 5): This embodiment is basically the same as Embodiment 4, the difference is that: as shown in Figure 22 to Figure 24, in this embodiment, the force guiding member 4 is set separately, including supporting holes 51 and the load-bearing plate 5 of the crimping plate area 52, and four placement parts 6 fixed on the bottom wall of the load-bearing board; each placement part 6 has a placement cavity 61 facing a corresponding support hole 51; the bottom wall of the placement cavity 62 is provided with a fastening groove, and a limit surface arranged horizontally is also provided in the placement cavity. The top wall of the bearing plate 5 is still used as the force guiding support part 41 .

The structure of the first precision weighing assembly 2 in this embodiment is basically the same as that of Embodiment 4, the difference is that the bottom wall of the outer peripheral edge of the elastic cover is bonded and fixed on the limit surface, and the first precision load cell is clamped It is fixed and crimped in the fastening groove on the bottom wall of the placement cavity. In the free state, the upper supporting member 212 is higher than the bearing plate 5, so that the bottom wall of the loading plate is higher than the bearing plate.

In this embodiment, by splitting the force guide member 4 into two parts, the load-bearing plate 5 and the placement member 6, this embodiment can be implemented more easily.

(Embodiment 6): This embodiment is basically the same as Embodiment 5, the difference is: as shown in Figure 25 to Figure 27, in this embodiment, the force guiding member 4 in this embodiment includes a support hole 51 The load-bearing plate 5 and the pad support 7 between the pressure plate 29 and the bottom wall of the load-bearing plate 5; in this embodiment, each pad support is arranged directly above the deck 34, and of course the pad support is placed elsewhere, as long as the load-bearing It is also feasible that the plate can transmit the pressure on itself to the second precision weighing component through the pad support. In this embodiment, the bearing plate is still used as the force guiding support part 40 .

In this embodiment, each first precision weighing assembly 2 includes an elastic support member 21, a mounting seat 27 provided with a slot and an accommodating cavity, and a bottom opening of the accommodating cavity in the mounting seat is covered and has a central through hole The elastic cover 28 of 281, the first precision load cell 22 located in the accommodating cavity and clamped in the slot, and the cylindrical pressure column 23 arranged in the central through hole 281 of the elastic cover. The elastic supporting member 21 includes a threaded spring 211, an upper supporting member 212 arranged at the top end of the threaded spring and a lower supporting member 213 arranged at the bottom end of the threaded spring. The top end of the upper supporting member passes through a corresponding supporting hole 51 and is bonded and fixed on the load On the bottom wall of the plate, the lower support member is crimped and fixed on the top wall of the mounting seat 27 , the first precision load cell 22 is crimped and arranged on the pressure column 23 , and the pressure column is crimped and arranged on the pressure plate 29 .

In this embodiment, the first fixing part 221 of the first precision load cell 22 is fixed in the slot on the top wall of the mounting seat, and the first load-bearing deformation part 222 is crimped on the top end of the pressure column 23 .

The pressing plate 29 in this embodiment is square and is an integral part, and its four corners are crimped and fixed on the top walls of the decks 34 in the four second precision weighing assemblies. The pad support 7 is arranged between the pressure plate and the bearing plate.

The working principle of this embodiment is: when the pressure of the loaded object on the loading plate is less than the maximum range of the first precision load cell, the force-guiding crimping part 10 of the loading plate is always higher than the force-guiding support of the force-guiding member Part 40, the loading plate first transmits all the pressure of the loaded object to the first precision load cell through the elastic support, and then passes the pressure to the second precision load cell through the pressing plate 29; at this time, this embodiment can be used as a kitchen Electronic scales are used.

When the pressure of the loaded object on the loading plate is greater than the maximum range of the first precision load cell, the force guiding crimping portion 10 of the loading plate is crimped on the force guiding support portion 40 of the force guiding member and the first precision scale at the same time. On the heavy assembly; the load plate transmits part of the pressure of the loaded object to the first precision load cell through the elastic support, and then passes the pressure to the second precision load cell through the pressure plate 29; The rest of the pressure is directly transmitted to the second precision load cell through the force guide, and this embodiment can be used as an electronic weight scale.

(Embodiment 7): This embodiment is basically the same as Embodiment 1, the difference is: as shown in Figure 29 to Figure 30, this embodiment only includes a first precision weighing assembly and a second precision weighing assembly .

In this embodiment, the support foot 32 in the second precision weighing assembly 3 is different from that in Embodiment 1. The support foot 32 in this embodiment includes a cylindrical metal support block 321 and a supporting plate made integrally with the support block 323, the supporting plate 323 is lower than the spring cover 35, and the supporting plate 323 is used as the bottom end of the support leg, which is the lowest end of this embodiment, and its supporting area is relatively large, which can stably support the entire electronic scale.

In addition, in this embodiment, the specific structure of the first precision weighing assembly 2 is as follows: it includes an elastic support member 21, a first precision load cell 22, an elastic cover 24 with a central limit hole 241, The load-bearing boss 25 protruding upwards at one end of the force sensor, the supporting boss 26 protruding downwards at the other end of the first precision sensor; 212. The lower support member 213 arranged at the bottom end of the threaded spring; the bottom wall of the outer peripheral edge of the elastic cover is crimped and fixed on the positioning surface in the tubular support wall 42; the top wall of the upper support member is bonded and fixed on the loading plate On the bottom wall; the lower support member 213 is arranged in the center limit hole 241 of the elastic cover, the bottom wall of the lower support member is crimped and fixed on the bearing boss 25, and the bottom wall of the support boss 26 is crimped and fixed. Fixed on the top of the deck.

The first precision load cell in this embodiment is a cantilever type load cell well known to those skilled in the art, with a measuring range of 0 to 20 kg and a division value of 1 gram.

The working principle of this embodiment is: when the pressure of the loaded object on the loading plate is less than the maximum range of the first precision load cell, the force-guiding crimping part 10 of the loading plate is always higher than the force-guiding support of the force-guiding member Part 40, the loading plate first transmits all the pressure of the loaded object to the first precision load cell through the elastic support, and then passes the pressure to the second precision load cell through the support boss 26; at this time, this embodiment can Use as a kitchen electronic scale.

When the pressure of the loaded object on the loading plate is greater than the maximum range of the first precision load cell, the force guiding crimping portion 10 of the loading plate is crimped on the force guiding support portion 40 of the force guiding member and the first precision scale at the same time. On the heavy assembly; the load plate transmits part of the pressure of the loaded object to the first precision load cell through the elastic support, and then passes the pressure to the second precision load cell through the support boss 26; The rest of the pressure of the loaded object is directly transmitted to the second precision load cell through the force guide, and this embodiment can be used as an electronic weight scale.

(Embodiment 8): This embodiment is basically the same as Embodiment 7, the difference is: as shown in Figure 31 to Figure 32, the force guiding member 4 in this embodiment and the deck in the second precision weighing assembly 34 is integrally made by injection molding. Compared with Embodiment 1, the force guide in this embodiment is no longer provided with a separate bottom wall 41, but directly uses the top wall of the card seat 34 as the force guide in Embodiment 1. The bottom wall 41 of the piece; in addition, the positioning surface is no longer provided in the cavity formed by the tubular support wall.

The specific structure of the first precision weighing assembly in this embodiment is as follows: it includes an elastic support member 21, a cantilever type first precision load cell 22, a load-bearing boss 25 that is arranged at one end of the first precision load cell and protrudes upwards, The support boss 26 that is arranged on the other end of the first accuracy sensor and protrudes downward; the elastic support includes a threaded spring 211, an upper support 212 arranged at the top end of the threaded spring, and a lower support 213 arranged at the bottom end of the threaded spring; The top wall of the load-bearing boss 25 is bonded and fixed on the bottom wall of the loading plate, the bottom wall of the support boss 26 is crimped and fixed on the upper support in the elastic support, and the lower support is crimped and fixed on the card. On the top of seat 34.

(Embodiment 9): This embodiment is basically the same as Embodiment 5, the difference is: as shown in Fig. 33 to Fig. 35, this embodiment only has one first precision weighing assembly 2. The specific structure of the first precision weighing assembly 2 is as follows: it includes an elastic support 21, a cantilever type first precision load cell 22, a load-bearing boss 25 that is arranged at one end of the first precision load cell and protrudes upwards, and is arranged on the The other end of the first accuracy sensor and the supporting boss 26 that protrudes downward; the elastic supporting member includes a threaded spring 211, an upper supporting member 212 arranged at the top end of the threaded spring, and a lower supporting member 213 arranged at the bottom end of the threaded spring; the upper supporting member The top of the part is bonded and fixed on the bottom wall of the loading plate, the lower supporting part is crimped and arranged on the load-bearing boss 25, and the bottom wall of the supporting boss 26 is crimped and fixed on the bottom wall 62 of the placement part.

(Embodiment 10): This embodiment is basically the same as Embodiment 1, the difference is that: see Figure 36 to Figure 38, in this embodiment, the specific structure of the first precision weighing assembly 2 is as follows: including elastic support Part 21, the first precision load cell 22, the elastic cover 24 with the center limit hole 241; the elastic supporting member 21 includes an elastic rod 214, a pressure block 215, a limit piece 217 with a limit chute 216; limit The position member 217 is fixed on the bottom wall of the loading plate, and the limiting chute 216 is arranged horizontally; the elastic rod 214 includes an anti-off sliding plate portion 2141 that can slide back and forth in the limiting chute, and an anti-off sliding plate portion 2141 that is inclined to the plane where the loading plate is located. The elastic plate part 2142; the bottom end of the elastic plate part is rotatably connected to the top end of the pressure block 215, the pressure block 215 is arranged in the center limit hole 241 of the elastic cover, and the bottom end of the pressure block is crimped on the first precision load cell 22 on. In this embodiment, an error analysis can be performed on the data monitored by the first precision load cell through an external intelligent circuit, so that when used as a kitchen electronic scale, an accurate value of the weight of the object on the loading plate can be obtained.

In this embodiment, in order to leave enough space for the deformation of the elastic rod, the tubular support wall in the force guiding member is also specially provided with a notch 421 .

By selecting a suitable elastic rod, it is possible to make this embodiment in a free state and when the weight of the object on the loading plate is less than 20 kilograms, the force guiding crimping portion of the loading plate is higher than the guiding supporting portion of the force guiding member; when When the weight of the loaded object is greater than 20 kg, the loading plate is crimped on the force guide; when the elastic rod is deformed by force, the anti-off sliding plate part slides back and forth in the limit chute, so that the embodiment maintains a stable state.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims (10)

1. an electronic scales, comprises support board, assembly of weighing for the first precision supporting support board; It is characterized in that: also comprise and to weigh assembly and weighing power of the leading part of assembly for self pressure being passed to the second precision for supporting weigh the second precision of assembly of support board and the first precision; First precision assembly of weighing comprises elastic supporting piece; The power part of leading is provided with leads power support, and support board is provided with leads power pressure contact portion; During the non-carrying object of support board, power of the leading pressure contact portion of support board exceeds power of the leading support of leading power part; During support board carrying object, support board is stressed to be pressed down elastic supporting piece and moves down, and support board is stressed to after to a certain degree, and it is led power pressure contact portion and is crimped on and leads on power of the leading support of power part.

2. electronic scales according to claim 1, is characterized in that: power of the leading pressure contact portion of support board is stressed to be moved down until be crimped in the process led on power of the leading support of power part, and elastic supporting piece is in elastic deformation state.

3. an electronic scales, comprises support board, assembly of weighing for the first precision supporting support board; It is characterized in that: also comprise and to weigh assembly and weighing power of the leading part of assembly for self pressure being passed to the second precision for supporting weigh the second precision of assembly of support board and the first precision; First precision assembly of weighing comprises elastic supporting piece; The power part of leading comprises the bearing plate with support holes as leading power support, and the diapire of support board is as leading power pressure contact portion; Each first precision weighs assembly through corresponding support holes apical grafting on support board diapire; During the non-carrying object of support board, power of the leading pressure contact portion of support board exceeds power of the leading support of leading power part; During support board carrying object, the diapire of support board is stressed to be pressed down elastic supporting piece and moves down, and support board is stressed to after to a certain degree, and it is led power pressure contact portion and is crimped on and leads on power of the leading support of power part.

4. electronic scales according to claim 3, is characterized in that: power of the leading pressure contact portion of support board is stressed to be moved down until be crimped in the process led on power of the leading support of power part, and elastic supporting piece is in elastic deformation state.

5. an electronic scales, comprises support board, assembly of weighing for the first precision supporting support board; It is characterized in that: also comprise and to weigh assembly and weighing power of the leading part of assembly for self pressure being passed to the second precision for supporting weigh the second precision of assembly of support board and the first precision; First precision assembly of weighing comprises elastic supporting piece and the first precision force cell; Second precision assembly of weighing comprises the second precision force cell; The power part of leading is provided with leads power support, and support board is provided with leads power pressure contact portion; Support board crimping is arranged on elastic supporting piece, and elastic supporting piece crimping is arranged on the first precision force cell, and the first precision force cell directly crimps to be arranged on the second precision force cell or to crimp to be arranged on leads on power part; During the non-carrying object of support board, power of the leading pressure contact portion of support board exceeds power of the leading support of leading power part; During support board carrying object, support board is stressed to be pressed down elastic supporting piece and moves down, and support board is stressed to after to a certain degree, and it is led power pressure contact portion and is crimped on and leads on power of the leading support of power part.

6. electronic scales according to claim 5, is characterized in that: the second precision assembly of weighing also comprises feet for supporting the second precision force cell, and the bottom of feet is the least significant end of this electronic scales.

7. an electronic scales, comprises support board, assembly of weighing for the first precision supporting support board; It is characterized in that: also comprise and to weigh assembly and weighing power of the leading part of assembly for self pressure being passed to the second precision for supporting weigh the second precision of assembly of support board and the first precision; First precision assembly of weighing comprises elastic supporting piece and the first precision force cell; Second precision assembly of weighing comprises the second precision force cell; The power part of leading is provided with leads power support, and support board is provided with leads power pressure contact portion; Support board crimping is arranged on the first precision force cell, and the first precision force cell crimping is arranged on elastic supporting piece, and elastic supporting piece directly crimps to be arranged on the second precision force cell or to crimp to be arranged on leads on power part; During the non-carrying object of support board, power of the leading pressure contact portion of support board exceeds power of the leading support of leading power part; During support board carrying object, support board is stressed to be pressed down elastic supporting piece and moves down, and support board is stressed to after to a certain degree, and it is led power pressure contact portion and is crimped on and leads on power of the leading support of power part.

8. electronic scales according to claim 7, is characterized in that: the second precision assembly of weighing also comprises feet for supporting the second precision force cell, and the bottom of feet is the least significant end of this electronic scales.

9. an electronic scales, comprises support board, assembly of weighing for the first precision supporting support board; It is characterized in that: also comprise and to weigh assembly and weighing power of the leading part of assembly for self pressure being passed to the second precision for supporting weigh the second precision of assembly of support board and the first precision; First precision assembly of weighing comprises elastic supporting piece and the first precision force cell; Elastic supporting piece comprises screw thread spring, is arranged on the upper supporting part on screw thread spring top and is arranged on the lower supporting part of screw thread spring bottom end; Second precision assembly of weighing comprises the second precision force cell; The power part of leading is provided with leads power support, and support board is provided with leads power pressure contact portion; Elastic supporting piece is arranged on above or below the first precision force cell; When above elastic supporting piece is arranged on the first precision force cell, support board crimping is arranged on upper supporting part, and lower supporting part crimping is arranged on the first precision force cell, and the first precision force cell crimping is arranged on the second precision force cell; When elastic supporting piece is arranged on below the first precision force cell, support board crimping is arranged on the first precision force cell, and the first precision force cell crimping is arranged on upper supporting part, and lower supporting part crimping is arranged on the second precision force cell; During the non-carrying object of support board, power of the leading pressure contact portion of support board exceeds power of the leading support of leading power part; During support board carrying object, support board is stressed to be pressed down elastic supporting piece and moves down, and support board is stressed to after to a certain degree, and it is led power pressure contact portion and is crimped on and leads on power of the leading support of power part.

10. electronic scales according to claim 9, is characterized in that: power of the leading pressure contact portion of support board is stressed to be moved down until be crimped in the process led on power of the leading support of power part, and screw thread spring is in elastic deformation state.