Weighing sensor device for electronic balance

Abstract

The utility model discloses a weighing sensor device used for an electronic balance, comprising a pedestal, an upper splayed frame reed assembly, a lower splayed frame reed assembly, a bearing support, a magnetic steel coil, a photoelectric assembly and a transmission protection sheet, the upper splayed frame reed assembly and the lower splayed frame reed assembly are horizontally arranged on the upper side and the lower side of the pedestal in a mirror image manner; the photoelectric assembly is arranged at one side end of the base, the lever assembly is arranged on the weighing support, the lever assembly comprises a lever, a sling reed and a fulcrum reed, the lever is connected with the weighing support through the sling reed, and the lever is further connected with the base through the fulcrum reed. The beneficial effects of the utility model are that through arranging the lever assembly and adjusting the position of the sling reed, the stress proportion of the lever is adjusted, and the measuring range and the precision of the sensor device are further changed, so that the electronic balance equipped with the sensor device can adapt to precision measurement with various requirements, and the application range of the electronic balance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic balances, in particular to a weighing sensor device used for electronic balances. Background Art

[0002] For high-precision weighing laboratories and electronic balances in industrial environments, according to the different structures of the weighing sensors, they are divided into electromagnetic force balance sensors and electronic balances, strain gauge weighing sensors and electronic balances, etc. The electromagnetic force balance sensor has a complex structure and high precision, and is a commonly used weighing sensor for analytical balances.

[0003] Existing electromagnetic force balance sensors and electronic balances generally have a fixed range and fixed accuracy, which cannot meet the increasingly diverse requirements for precision weighing. Utility Model Content

[0004] The purpose of the utility model is to provide a weighing sensor device for an electronic balance to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weighing sensor device for an electronic balance, comprising a base, an upper eight-shaped frame reed assembly, a lower eight-shaped frame reed assembly, a load-bearing bracket, a magnetic steel coil, a photoelectric component and a transmission protection sheet, wherein the upper eight-shaped frame reed assembly and the lower eight-shaped frame reed assembly are horizontally mirror-imaged on the upper and lower sides of the base, the photoelectric component is arranged on one side end of the base, and also comprises a lever assembly, wherein the lever assembly is arranged on the load-bearing bracket, the lever assembly comprises a lever, a sling reed and a fulcrum reed, the lever is connected to the load-bearing bracket via the sling reed, and the lever is also connected to the base via the fulcrum reed.

[0006] Preferably, the lever comprises a rod handle and a rod head, the rod head is in a circular ring shape, and one end of the rod handle is connected to the rod head.

[0007] Preferably, a bracket is provided on the lower side of the connection between the rod head and the rod handle, a spring mounting block is provided at the bottom end of the bracket, the bottom end of the fulcrum spring leaf is connected to the spring mounting block, and the upper end of the fulcrum spring leaf is connected to the base.

[0008] Preferably, a sling spring is provided at the bottom end of the rod handle away from the rod head, and the bottom end of the sling spring is connected to the load-bearing bracket.

[0009] Preferably, the fulcrum springs are in two groups and are symmetrically distributed along both sides of the rod handle.

[0010] Preferably, a slide groove is provided at the bottom end of the sling reed, a slider is provided in the slide groove, the sling reed is connected to the slider, and the sliding direction of the slider is consistent with the length direction of the handle.

[0011] Preferably, at least three sling spring installation holes are provided on the rod handle, and the sling spring installation holes are evenly distributed along the length direction of the rod handle.

[0012] Preferably, a windproof cover is provided on the upper eight-shaped frame reed assembly.

[0013] Preferably, a transmission protection sheet is provided on the lever, one end of the transmission protection sheet is fixedly arranged on the lever, and the other end is movably arranged in an annular groove, and the annular groove is connected to the base through bolts.

[0014] Compared with the prior art, the beneficial effect of the utility model is that the utility model sets a lever assembly and adjusts the position of the sling spring to change the force ratio of the lever, thereby changing the range and accuracy of the sensor device, so that the electronic balance equipped with the utility model can adapt to various precision measurements, thereby improving the adaptability of the electronic balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an explosion diagram of the utility model;

[0017] Figure 3 This is a connection diagram of the lever assembly and the load-bearing bracket of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the lever assembly of the utility model;

[0019] Figure 5 This is a structural diagram of the transmission protection sheet of the utility model.

[0020] In the figure: 1, base; 2, upper eight-shaped frame reed assembly; 3, lower eight-shaped frame reed assembly; 4, load-bearing bracket; 5, magnetic steel coil; 6, photoelectric component; 7, transmission protection sheet; 71, annular groove; 8, windproof cover; 9, lever; 91, rod handle; 92, rod head; 93, bracket; 94, spring mounting block; 10, sling reed; 11, fulcrum reed; 12, slide groove; 13, slider; 14, sling reed mounting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides a technical solution: a weighing sensor device for an electronic balance, comprising a base 1, an upper eight-shaped frame reed assembly 2, a lower eight-shaped frame reed assembly 3, a load-bearing bracket 4, a magnetic steel coil 5, and a photoelectric assembly 6. The upper eight-shaped frame reed assembly 2 and the lower eight-shaped frame reed assembly 3 are horizontally mirrored on the upper and lower sides of the base 1. The upper eight-shaped frame reed assembly 2 and the lower eight-shaped frame reed assembly 3 are both an eight-shaped frame connecting four connecting reeds, which are placed horizontally in the sensor to form a parallelogram. A windproof cover 8 is provided on the upper eight-shaped frame reed assembly 2, and the windproof cover 8 is used to reduce the influence of airflow near the weighing platform on the sensor. The photoelectric component 6 is arranged at one side end of the base 1, and the photoelectric component 6 is used to detect whether the lever is in a horizontal balance state. In order to enable the utility model to adapt to different measuring ranges and accuracies, the utility model also includes a lever assembly, and the lever assembly is arranged on the load-bearing bracket 4. The lever assembly includes a lever 9, a sling spring 10 and a fulcrum spring 11. The lever 9 is connected to the load-bearing bracket 4 through the sling spring 10, and the lever 9 is also connected to the base 1 through the fulcrum spring 11.

[0023] In this embodiment, the lever 9 includes a rod handle 91 and a rod head 92. The rod head 92 is annular, and one end of the rod handle 91 is connected to the rod head 92. The rod head 92 is sleeved around the outer periphery of the weighing sensor and connected to the weighing sensor.

[0024] In this embodiment, a bracket 93 is provided at the lower side of the connection between the rod head 92 and the rod handle 91, a spring mounting block 94 is provided at the bottom end of the bracket 93, the bottom end of the fulcrum spring leaf 11 is connected to the spring mounting block 94, and the upper end of the fulcrum spring leaf 11 is connected to the base 1. The fulcrum spring leaf 11 is divided into two groups, which are symmetrically distributed along the two sides of the rod handle 91.

[0025] In this embodiment, a sling spring 10 is provided at the bottom end of the rod handle 91 away from the rod head 92, and the bottom end of the sling spring 10 is connected to the load-bearing bracket 4. A slide groove 12 is provided at the bottom end of the sling spring 10, and a slider 13 is provided in the slide groove 12. The sling spring 10 is connected to the slider 13, and the sliding direction of the slider 13 is consistent with the length direction of the rod handle 91. At least three sling spring installation holes 14 are provided on the rod handle 91, and the sling spring installation holes 14 are evenly distributed along the length direction of the rod handle. The front and rear positions of the sling reed 10 between the lever 91 and the load-bearing bracket 4 are adjustable, and the lever ratio is adjusted by adjusting the distance between the sling reed 10 and the fulcrum reed 11. When a large range and low precision are required, the sling reed 10 is adjusted forward (i.e., in the direction close to the rod head), and the distance between the sling reed 10 and the fulcrum reed 51 is reduced; when a small range and high precision are required, the sling reed 10 is adjusted backward (i.e., in the direction away from the rod head), and the distance between the sling reed 10 and the fulcrum reed 11 is increased.

[0026] In this embodiment, a transmission protection sheet 7 is provided on the lever 91, one end of the transmission protection sheet 7 is fixedly arranged on the lever 91, and the other end is movably arranged in an annular groove 71, and the annular groove 71 is connected to the base 1 by bolts. The transmission protection sheet 7 is used to limit the position of the lever 91 to prevent damage to the sensor.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weighing sensor device for an electronic balance, comprising a base, an upper splayed reed assembly, a lower splayed reed assembly, a load-bearing bracket, a magnetic steel coil and a photoelectric assembly, wherein the upper splayed reed assembly and the lower splayed reed assembly are horizontally mirror-imaged on the upper and lower sides of the base, and the photoelectric assembly is arranged on one side of the base, characterized in that: It also includes a lever assembly, which is arranged on the load-bearing bracket. The lever assembly includes a lever, a sling spring and a fulcrum spring. The lever is connected to the load-bearing bracket through the sling spring, and the lever is also connected to the base through the fulcrum spring.

2. A weighing sensor device for an electronic balance according to claim 1, characterized in that: The lever comprises a rod handle and a rod head, the rod head is in a circular ring shape, and one end of the rod handle is connected to the rod head.

3. A weighing sensor device for an electronic balance according to claim 2, characterized in that: A bracket is provided at the lower side of the connection between the rod head and the rod handle, a spring mounting block is provided at the bottom end of the bracket, the bottom end of the fulcrum spring leaf is connected to the spring mounting block, and the upper end of the fulcrum spring leaf is connected to the base.

4. A weighing sensor device for an electronic balance according to claim 3, characterized in that: A sling spring is provided at the bottom end of the rod handle away from the rod head, and the bottom end of the sling spring is connected to the load-bearing bracket.

5. A weighing sensor device for an electronic balance according to claim 4, characterized in that: The fulcrum springs are divided into two groups and are symmetrically distributed along both sides of the rod handle.

6. A weighing sensor device for an electronic balance according to claim 5, characterized in that: A slide groove is provided at the bottom end of the sling reed, a slider is provided in the slide groove, the sling reed is connected to the slider, and the sliding direction of the slider is consistent with the length direction of the rod handle.

7. A weighing sensor device for an electronic balance according to claim 6, characterized in that: The rod handle is provided with at least three sling spring installation holes, and the sling spring installation holes are evenly distributed along the length direction of the rod handle.

Images