An integrated weighing sensor and electronic balance

Abstract

The present invention discloses an integrated weighing sensor, including an elastic body, a scale plate-scale core assembly, a lever, a magnetic cylinder-coil assembly, a lever bracket and a sling; the elastic body includes a base, an upper parallel frame, a lower parallel frame, a load-bearing force measuring unit and a lever support seat, and the base, the upper parallel frame, the lower parallel frame, the load-bearing force measuring unit and the lever support seat are an integrated structure; the scale plate-scale core assembly is fixed above the load-bearing force measuring unit; the lever bracket is fixed on the lever support seat; the left end of the lever is supported on the lever bracket, and a sling is connected above the left end of the lever, and the sling is connected to the bottom of the load-bearing force measuring unit; the right end of the lever passes through the magnetic cylinder-coil assembly, and the magnetic cylinder-coil assembly is fixed on the elastic body. The integrated weighing sensor and electronic balance of the present invention have simple structure, low manufacturing cost, high weighing accuracy and fast response speed.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, and in particular to an integrated weighing sensor and an electronic balance. Background Art

[0002] For high-precision weighing laboratories and electronic balances and moisture analyzers in industrial environments, according to the different structures of weighing sensors, they are divided into traditional electromagnetic force balance sensors and electronic balances, strain gauge weighing sensors and electronic balances, etc.; the traditional electromagnetic force balance sensor has a complex structure, mainly composed of a base, a splayed frame-reed assembly (upper), a hanging ear-lever-scale pan assembly, a splayed frame-reed assembly (lower), etc., which together form a parallelogram structure. The hanging ear-lever-scale pan assembly realizes the force transmission and balance of the lever through the fulcrum reed, the sling reed, the magnetic steel-coil assembly, etc. The traditional electromagnetic force balance sensor has many parts, a complex structure, and a slow response speed, which cannot meet the precision weighing requirements in industrial environments; the strain gauge weighing sensor is a relatively independent force measuring unit. The weighing principle is to cause the deformation of the elastic body under the weight of the measured object, and convert it into a voltage change output through the Wheatstone bridge principle to achieve force measurement. The electronic balance composed of strain gauge weighing sensors has a simple structure, low manufacturing cost, and fast response speed, but the weighing accuracy is low, which cannot adapt to the application of analytical balance.

[0003] The "weighing sensor and electronic balance" disclosed in the application number 201510273989.8, although its bearing part, parallel guide part and fixed part are an integrated structure, there are still connecting springs, fulcrum springs and other components, the structure is still complicated and affects the reliability of the electronic balance.

[0004] There is an urgent need for an integrated weighing sensor and electronic balance with a simple structure, low manufacturing cost, high weighing accuracy and fast response speed to solve the above technical problems. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an integrated weighing sensor and an electronic balance. The integrated weighing sensor and the electronic balance of the present invention have a simple structure, low manufacturing cost, high weighing accuracy and fast response speed.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides an integrated weighing sensor, including an elastic body, a scale plate-scale core assembly, a lever, a magnetic cylinder-coil assembly, a lever bracket and a sling; the elastic body includes a base, an upper parallel frame, a lower parallel frame, a load-bearing force measuring unit and a lever support seat, the base, the upper parallel frame, the lower parallel frame, the load-bearing force measuring unit and the lever support seat are an integrated structure, the elastic body is designed as an open cavity and a tensioning structure in the horizontal and vertical directions, the base is located in the lower right area of ​​the elastic body, the load-bearing force measuring unit is located in the upper left area of ​​the elastic body, the load-bearing force measuring unit and the base are connected by The two components are connected by four thin sheet-like ties, the upper parallel frame and the lower parallel frame are respectively located above and below the elastic body, and the lever support seat is located between the upper parallel frame and the lower parallel frame; the scale pan-scale core assembly is fixed above the load-bearing force measuring unit; the lever bracket is fixed on the lever support seat; the left end of the lever is supported on the lever bracket, and the sling is connected to the upper part of the left end of the lever, and the sling is connected to the bottom of the load-bearing force measuring unit; the right end of the lever passes through the magnetic cylinder-coil assembly, and the magnetic cylinder-coil assembly is fixed on the elastic body.

[0008] In the present invention, the elastic body is used to install and support the magnetic cylinder-coil assembly, and plays the role of a guide spring through the structure of the elastic body itself.

[0009] In the present invention, the scale pan-scale core assembly is used to place objects to be weighed;

[0010] Preferably, the scale pan-scale core assembly is connected to the load-bearing force measuring unit via a fixing plate and screws.

[0011] In the present invention, the lever cooperates with the magnetic cylinder-coil assembly to realize the conversion of the deformation of the load-bearing force measuring unit into an electromagnetic signal;

[0012] Preferably, a limiting mechanism is installed on the top of the right end of the lever.

[0013] In the present invention, the magnetic cylinder-coil assembly is used to realize the conversion of electromagnetic signals, and the magnetic cylinder-coil assembly is conventional in the art.

[0014] In the present invention, the lever bracket is used to support the lever;

[0015] Preferably, the lever bracket is an embedded double-plate structure, and the lever bracket includes an outer plate and an inner plate. The outer plate and the inner plate are connected by two left-right symmetrical links that are machined into thin sheets. The outer plate is fixed to the lever support seat by screws, and the inner plate supports the left end of the lever. The outer plate and the inner plate simultaneously act as fulcrum springs.

[0016] In the present invention, the sling is connected to the bottom of the load-bearing force measuring unit and acts as a sling reed;

[0017] Preferably, the sling is a dumbbell-shaped plate structure, the upper and lower parts of the sling are wide, and the middle part of the sling is thin and narrow.

[0018] The present invention also provides an electronic balance, which includes an analog-to-digital conversion-display screen and the above-mentioned integrated weighing sensor, wherein the analog-to-digital conversion-display screen is fixed above the magnetic cylinder-coil assembly, and the analog-to-digital conversion-display screen is connected to the magnetic cylinder-coil assembly.

[0019] In the present invention, the analog-to-digital conversion-display screen is used to convert analog signals into digital signal outputs and display them on the display screen.

[0020] The working principle of the integrated weighing sensor and electronic balance of the present invention is: when the scale pan-scale core assembly is loaded, the lever loses balance; the magnetic cylinder-coil assembly automatically adjusts the current and electromagnetic force to achieve rebalancing of the lever, and through analog-to-digital conversion-display screen display, the analog signals of the integrated weighing sensor and the electronic balance are converted into digital signal outputs to achieve precise weighing.

[0021] The advantages and beneficial effects of the present invention are as follows: the integrated weighing sensor and the electronic balance of the present invention have a simple structure, low manufacturing cost, high weighing accuracy and fast response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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.

[0023] Figure 1 It is a structural schematic diagram of an electronic balance according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the elastic body of the integrated weighing sensor according to an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a lever bracket of an integrated weighing sensor according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the sling of the integrated weighing sensor according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Elastomer;

[0029] 2. Scale pan-scale core assembly;

[0030] 3. Leverage;

[0031] 4. Magnetic cylinder-coil assembly;

[0032] 5. Lever bracket;

[0033] 6. Suspenders;

[0034] 7. Analog-to-digital conversion-display screen;

[0035] 11. Base;

[0036] 12. Upper parallel rack;

[0037] 13. Lower parallel frame;

[0038] 14. Load-bearing force measuring unit;

[0039] 15. Lever support seat;

[0040] 51. Outer panel;

[0041] 52. Inner panel. DETAILED DESCRIPTION

[0042] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment provides an integrated weighing sensor, including an elastic body 1, a scale pan-scale core assembly 2, a lever 3, a magnetic cylinder-coil assembly 4, a lever bracket 5 and a sling 6; the elastic body 1 includes a base 11, an upper parallel frame 12, a lower parallel frame 13, a load-bearing force measuring unit 14 and a lever support seat 15. The base 11, the upper parallel frame 12, the lower parallel frame 13, the load-bearing force measuring unit 14 and the lever support seat 15 are an integrated structure. The elastic body 1 is designed as an open cavity and a tensioning structure in the horizontal and vertical directions. The base 11 is located in the lower right area of ​​the elastic body 1, and the load-bearing force measuring unit 14 is located in the upper left area of ​​the elastic body 1. Area, the load-bearing force measuring unit 14 and the base 11 are connected by four thin sheet-like ties, the upper parallel frame 12 and the lower parallel frame 13 are respectively located above and below the elastomer 1, and the lever support seat 15 is located between the upper parallel frame 12 and the lower parallel frame 13; the scale pan-scale core assembly 2 is fixed above the load-bearing force measuring unit 14; the lever bracket 5 is fixed on the lever support seat 15; the left end of the lever 3 is supported on the lever bracket 5, and a sling 6 is connected to the upper part of the left end of the lever 3, and the sling 6 is connected to the bottom of the load-bearing force measuring unit 14; the right end of the lever 3 passes through the magnetic cylinder-coil assembly 4, and the magnetic cylinder-coil assembly 4 is fixed on the elastomer 1.

[0044] In this embodiment, the elastic body 1 is used to install and support the magnetic cylinder-coil assembly 4, and acts as a guide spring through the structure of the elastic body 1 itself.

[0045] In this embodiment, the scale pan-scale core assembly 2 is used to place objects to be weighed; the scale pan-scale core assembly 2 is connected to the load-bearing force measuring unit 14 via a fixing plate and screws.

[0046] In this embodiment, the lever 3 cooperates with the magnetic cylinder-coil assembly 4 to realize the conversion of the deformation of the load-bearing force measuring unit 14 into an electromagnetic signal; a limit mechanism is installed on the top of the right end of the lever 3.

[0047] In this embodiment, the magnetic cylinder-coil assembly 4 is used to realize the conversion of electromagnetic signals.

[0048] In this embodiment, the lever bracket 5 is used to support the lever 3; the lever bracket 5 is an embedded double-plate structure, and the lever bracket 5 includes an outer plate 51 and an inner plate 52. The outer plate 51 and the inner plate 52 are connected by two left-right symmetrical links that are machined into thin sheets. The outer plate 51 is fixed to the support seat of the lever 3 by screws, and the inner plate 52 supports the left end of the lever 3. The outer plate 51 and the inner plate 52 simultaneously act as fulcrum springs.

[0049] In this embodiment, the sling 6 is connected to the bottom of the load-bearing force measuring unit 14, and acts as a spring of the sling 6; the sling 6 is a dumbbell-shaped plate structure, the upper and lower parts of the sling 6 are wide, and the middle part of the sling 6 is thin and narrow.

[0050] This embodiment also provides an electronic balance, which includes an analog-to-digital conversion-display screen 7 and the above-mentioned integrated weighing sensor. The analog-to-digital conversion-display screen 7 is fixed above the magnetic cylinder-coil assembly 4, and the analog-to-digital conversion-display screen 7 and the magnetic cylinder-coil assembly 4 are connected.

[0051] In this embodiment, the analog-to-digital conversion-display screen 7 is used to convert analog signals into digital signal outputs and display them on the display screen.

[0052] The working principle of the integrated weighing sensor and electronic balance of this embodiment is: when the scale pan-scale core assembly is loaded, the lever loses balance; the magnetic cylinder-coil assembly automatically adjusts the current and electromagnetic force to achieve rebalancing of the lever, and through analog-to-digital conversion-display on the display screen, the analog signals of the integrated weighing sensor and electronic balance are converted into digital signal outputs to achieve precise weighing.

[0053] The integrated weighing sensor and electronic balance of this embodiment have simple structure, low manufacturing cost, high weighing accuracy and fast response speed.

[0054] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated weighing sensor, characterized in that: The integrated weighing sensor includes an elastomer, a scale pan-scale core assembly, a lever, a magnetic cylinder-coil assembly, a lever bracket and a sling; the elastomer includes a base, an upper parallel frame, a lower parallel frame, a load-bearing force measuring unit and a lever support seat, the base, the upper parallel frame, the lower parallel frame, the load-bearing force measuring unit and the lever support seat are an integrated structure, the elastomer is designed as an open cavity and a tensioning structure in the horizontal and vertical directions, the base is located in the lower right area of ​​the elastomer, the load-bearing force measuring unit is located in the upper left area of ​​the elastomer, the load-bearing force measuring unit and the base are connected by four thin sheet-like ties, the upper parallel frame and the lower parallel frame are respectively located above and below the elastomer, and the lever support seat is located between the upper parallel frame and the lower parallel frame; the The scale pan-scale core assembly is fixed above the load-bearing force measuring unit; the lever bracket is fixed on the lever support seat; the left end of the lever is supported on the lever bracket, and the sling is connected to the top of the left end of the lever, and the sling is connected to the bottom of the load-bearing force measuring unit; the right end of the lever passes through the magnetic cylinder-coil assembly, and the magnetic cylinder-coil assembly is fixed on the elastomer, and the lever bracket is an embedded double-plate structure, and the lever bracket includes an outer plate and an inner plate, and the outer plate and the inner plate are connected by two left-right symmetrical links that are machined into thin sheets, and the outer plate is fixed to the lever support seat by screws, and the inner plate supports the left end of the lever, and the sling is a dumbbell-shaped plate structure, the upper and lower parts of the sling are wide, and the middle part of the sling is thin and narrow.

2. The integrated weighing sensor according to claim 1, characterized in that: The scale pan-scale core assembly is connected to the load-bearing force measuring unit via a fixing plate and screws.

3. The integrated weighing sensor according to claim 1, characterized in that: A limiting mechanism is installed on the top of the right end of the lever.

4. An electronic balance, characterized in that: The electronic balance includes an analog-to-digital conversion-display screen and an integrated weighing sensor as described in any one of claims 1 to 3, wherein the analog-to-digital conversion-display screen is fixed above the magnetic cylinder-coil assembly, and the analog-to-digital conversion-display screen is connected to the magnetic cylinder-coil assembly.

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