CN214621437U

CN214621437U - Weighing sensor with voltage protection function

Info

Publication number: CN214621437U
Application number: CN202120722411.7U
Authority: CN
Inventors: 赵钧; 王立刚
Original assignee: Lascaux Microelectronic Device Tianjin Co ltd
Current assignee: Lascaux Microelectronic Device Tianjin Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-11-05
Anticipated expiration: 2031-04-09

Abstract

The utility model relates to a technical field that weighs especially relates to a weighing sensor with voltage protection function, including pressure head device, weighing platform device. Threaded connection is adopted between the screw rod on the pressure head device and the weighing platform device, so that different pressure head devices can be replaced conveniently, the production cost of an enterprise can be effectively reduced, and the measurement errors of a plurality of weighing devices are avoided. The integrated circuit board that weighs in the weighing platform device has increased voltage protection function on original function basis, can carry out a voltage protection to weighing integrated circuit board, avoids the impact of instantaneous high voltage to the circuit board, can effectively improve weighing-appliance's life, reduces the fault rate. The utility model discloses product life can be improved, the trouble is reduced, cost of maintenance is reduced, work efficiency's advantage is improved.

Description

Weighing sensor with voltage protection function

Technical Field

The utility model relates to a technical field that weighs especially relates to a weighing sensor with voltage protection function.

Background

A load cell is essentially a device that converts a mass signal into a measurable electrical signal output. The sensor is used in consideration of the actual working environment of the sensor, which is important for correctly selecting the weighing sensor, and the sensor is related to whether the sensor can work normally, the safety and the service life of the sensor, and even the reliability and the safety of the whole weighing apparatus. On the basis of basic concepts and evaluation methods of main technical indexes of the weighing sensor, the new national standard and the old national standard have qualitative differences. The device mainly comprises an S-shaped, a cantilever type, a spoke type, a plate ring type, a diaphragm box type, a bridge type, a column cylinder type and the like. For example, chinese patent CN202021076293.9 discloses a spoke type weighing sensor, which includes an upper cover, a spoke type elastic body and a lower cover, wherein the upper cover and the lower cover are respectively installed at the top end and the bottom end of the spoke type elastic body, the inside of the spoke type elastic body is fixedly connected with a wheel hub through a plurality of wheel covers, and a resistance strain gauge is bonded to the side wall of each wheel cover; the outer wall of the spoke type elastic body is provided with a threading hole, a wire holder is arranged in the threading hole, one end of the wire holder is respectively connected with all resistance strain gauges, the other end of the wire holder is installed in a matching way with a wire connector of an external cable, and the outer wall of the wire connector is provided with a movable nut; the utility model can prevent external water vapor from entering the inside of the spoke type elastic body, avoid the oxidation and rust of the spoke type elastic body and the short circuit phenomenon of the resistance strain gauge, and is beneficial to prolonging the service life of the spoke type weighing sensor; meanwhile, the movable nut can be prevented from rusting, and the stability and reliability of cable connector connection are ensured.

However, faults often occur in the using process, and in most cases, the voltage is too high, so that the chip circuit board is burnt.

There is therefore a need for a load cell with voltage protection that solves the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims at providing a weighing sensor with voltage protection function, the utility model discloses increased voltage protection module on the integrated circuit board of weighing, realized the protection to voltage, avoided transient voltage to damage the circuit board, reduce the fault rate, improve life. The utility model discloses product life can be improved, the trouble is reduced, cost of maintenance is reduced, work efficiency's advantage is improved.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the utility model provides a weighing sensor with voltage protection function, includes pressure head device, weighing platform device and pencil, the pressure head device sets up in the weighing platform device upper end, and pressure head device and weighing platform device are swing joint, and the pencil is fixed in weighing platform device one side.

Further, the pressure head device comprises a plate A, a mounting hole A is formed in the plate A, a boss is arranged on the plate A, the boss is fixedly connected with the plate A, a screw rod is arranged on the boss, one end of the screw rod is fixedly connected with the boss, and the other end of the screw rod is in threaded connection with the weighing platform device.

Further, the weighing platform device comprises a shell, a plate B is arranged at the upper end of the shell, a mounting hole C is formed in the plate B, the plate B is movably connected with the shell, a mounting hole B is formed in the shell, a threaded pressure hole is formed in the plate B, the screw rod is in threaded connection with the threaded pressure hole, a nut is arranged on one side of the shell, and the nut is in threaded connection with the shell.

Furthermore, the board B is provided with a weighing integrated circuit board, a micro-control unit module and a communication unit module, and the weighing integrated circuit board, the micro-control unit module and the communication unit module are fixedly connected with the board B.

Furthermore, a weighing sensor module is arranged in the threaded pressure hole and is electrically connected with the threaded pressure hole.

Furthermore, the integrated circuit board that weighs is equipped with voltage protection module, and voltage protection module and integrated circuit board that weighs are the electricity and are connected.

Furthermore, a chip and a control circuit are arranged on the voltage protection module, and the chip module and the control circuit are electrically connected with the voltage protection module.

Further, the model of the chip is LM 358.

The utility model has the advantages that: the utility model provides a weighing sensor with voltage protection function, including pressure head device, weighing platform device. Threaded connection is adopted between the screw rod on the pressure head device and the weighing platform device, so that different pressure head devices can be replaced conveniently, the production cost of an enterprise can be effectively reduced, and the measurement errors of a plurality of weighing devices are avoided. The integrated circuit board that weighs in the weighing platform device has increased voltage protection function on original function basis, can carry out a voltage protection to weighing integrated circuit board, avoids the impact of instantaneous high voltage to the circuit board, can effectively improve weighing-appliance's life, reduces the fault rate. The utility model discloses product life can be improved, the trouble is reduced, cost of maintenance is reduced, work efficiency's advantage is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic structural view of the indenter device of the present invention;

FIG. 3 is a schematic structural view of the weighing platform device of the present invention;

FIG. 4 is a block diagram of the control structure of the present invention;

wherein: 1. a ram device; 11. a mounting hole A; 12. a plate A; 13. a boss; 14. a screw; 2. a weighing platform device; 21. a housing; 22. a mounting hole B; 23. a mounting hole C; 24. a threaded pressure bore; 25. a plate B; 26. a nut; 3. a wire harness.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

fig. 1 is the utility model discloses a spatial structure schematic diagram, as the weighing sensor with voltage protection function that fig. 1 is shown, including pressure head device 1, weighing platform device 2 and pencil 3, pressure head device 1 sets up in weighing platform device 2 upper ends, and pressure head device 1 is swing joint with weighing platform device 2, and pencil 3 is fixed in weighing platform device 2 one side. If the device is arranged, an object to be weighed can be placed on the surface of the pressure head device 1, analyzed through a sensor and a circuit board inside the weighing platform device 2, and then led out through a wire harness.

Example 2:

fig. 2 is the utility model discloses a pressure head device structure schematic diagram, the weighing sensor with voltage protection function as shown in fig. 2, pressure head device 1 includes board A12, is equipped with mounting hole A11 on the board A12, is equipped with boss 13 on the board A12, and boss 13 and board A12 are fixed connection, are equipped with screw rod 14 on the

boss

13, and 14 one end of screw rod are fixed connection with boss 13, and the screw rod 14 other end is threaded connection with title platform device 2. So set up, the screw rod that sets up on board A12 is favorable to the later stage to carry out the change of pressure head device, can change into the pattern of different shapes according to the name article, has avoided the enterprise to purchase too much weighing device, reduces the cost of enterprise.

Example 3:

fig. 3 is the utility model discloses a weighing platform device structure schematic diagram, as the weighing sensor with voltage protection function that fig. 3 shows, weighing platform device 2 includes casing 21, and casing 21 upper end is equipped with board B25, is equipped with mounting hole C23 on the board B25, and board B25 is swing joint with casing 21, is equipped with mounting hole B22 on the casing 21, is equipped with screw pressure hole 24 on the board B25, and screw rod 14 is threaded connection with screw pressure hole 24, and casing 21 one side is equipped with nut 26, and nut 26 is threaded connection with casing 21. So set up, fix casing 21 in suitable position, then screw into in the threaded pressure hole 24 with pressure head device 1, then alright place the work of weighing in pressure head device 1 surface with the article of waiting to weigh to derive data through pencil 3.

Example 4:

fig. 3 is the utility model discloses a weighing platform device schematic structure diagram, fig. 4 is the utility model discloses a control structure block diagram, like the weighing sensor who has voltage protection function that fig. 3 and fig. 4 are shown, be equipped with integrated circuit board, micro-control unit module and the communication unit module of weighing on the board B25, integrated circuit board, micro-control unit module and the communication unit module of weighing are fixed connection with board B25. And a weighing sensor module is arranged in the threaded pressure hole 24 and is electrically connected with the threaded pressure hole. And the weighing integrated circuit board is provided with a voltage protection module which is electrically connected with the weighing integrated circuit board. The voltage protection module is provided with a chip and a control circuit, the chip module and the control circuit are electrically connected with the voltage protection module, and the model of the chip is LM 358. So set up, can carry out a voltage protection through voltage protection module symmetrical weight integrated circuit board, avoid instantaneous big voltage to lead to weighing integrated circuit board's damage, can improve whole weighing device's life like this by a wide margin, avoid frequent change or maintenance circuit board, reduce the cost of enterprise, and then improved work efficiency.

The working mode is as follows: the utility model provides a weighing sensor with voltage protection function, the utility model discloses when using, earlier be connected pencil 3 through nut 26 and the inside communication unit module of casing 21, then select the pressure head device 1 of suitable shape according to the nominal article, then be connected pressure head device 1 and title platform device 2 through screw rod 14, then check-up the weighing device with the weight of standard, the check-up rear can carry out the work of weighing to the nominal article. The utility model discloses product life can be improved, the trouble is reduced, cost of maintenance is reduced, work efficiency's advantage is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a weighing sensor with voltage protection function, includes pressure head device, weighing platform device and pencil, its characterized in that: the pressure head device is arranged at the upper end of the weighing platform device, the pressure head device is movably connected with the weighing platform device, and the wire harness is fixed on one side of the weighing platform device.

2. The weighing sensor with voltage protection function according to claim 1, wherein: the pressure head device comprises a plate A, a mounting hole A is formed in the plate A, a boss is arranged on the plate A, the boss is fixedly connected with the plate A, a screw rod is arranged on the boss, one end of the screw rod is fixedly connected with the boss, and the other end of the screw rod is in threaded connection with the weighing platform device.

3. The weighing sensor with voltage protection function according to claim 1, wherein: the weighing platform device comprises a shell, a plate B is arranged at the upper end of the shell, a mounting hole C is formed in the plate B, the plate B is movably connected with the shell, a mounting hole B is formed in the shell, a threaded pressure hole is formed in the plate B, the screw rod is in threaded connection with the threaded pressure hole, a nut is arranged on one side of the shell, and the nut is in threaded connection with the shell.

4. The weighing sensor with voltage protection function according to claim 3, wherein: and the board B is provided with a weighing integrated circuit board, a micro-control unit module and a communication unit module, and the weighing integrated circuit board, the micro-control unit module and the communication unit module are fixedly connected with the board B.

5. The weighing sensor with voltage protection function according to claim 3, wherein: and a weighing sensor module is arranged in the threaded pressure hole and is electrically connected with the threaded pressure hole.

6. The weighing sensor with voltage protection function according to claim 4, wherein: and the weighing integrated circuit board is provided with a voltage protection module which is electrically connected with the weighing integrated circuit board.

7. The weighing sensor with voltage protection function according to claim 6, wherein: and the voltage protection module is provided with a chip and a control circuit, and the chip module and the control circuit are electrically connected with the voltage protection module.

8. The weighing sensor with voltage protection function according to claim 7, wherein: the model of the chip is LM 358.