CN213455924U - Force cell sensor with buffer structure - Google Patents
Force cell sensor with buffer structure Download PDFInfo
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- CN213455924U CN213455924U CN202022369183.8U CN202022369183U CN213455924U CN 213455924 U CN213455924 U CN 213455924U CN 202022369183 U CN202022369183 U CN 202022369183U CN 213455924 U CN213455924 U CN 213455924U
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Abstract
The utility model discloses a force cell sensor with buffer structure, including buffer gear, push down the pad, sensing mechanism, reinforcing mechanism and last pressure head, a plurality of buffer gear body one end are connected with a plurality of first bumper shock absorbers one end respectively, and a plurality of buffer gear body other ends are connected with a plurality of second bumper shock absorbers one end respectively, a plurality of first connecting seat one end all with push down pad body lower surface and be connected, resistance strain tube one end is connected with the base side surface, reinforcing mechanism body lower surface and base upper surface welding, reinforcing mechanism body upper surface and last pressure head body lower surface welding. The utility model relates to a force cell sensor with buffer structure, electronic circuit can be protected to the sealing washer, and buffer gear, buffer spring and buffer have improved the stability of device, prevent that the sensor from receiving the damage when the dynamometry, through adjusting bolt's locking force, have improved the structural strength of force cell sensor junction, have prolonged force cell sensor's life.
Description
Technical Field
The utility model relates to a force cell sensor specifically is a force cell sensor with buffer structure.
Background
The force transducer is a force-electricity conversion device capable of converting gravity into an electric signal, and is a key component of the electronic weighing apparatus. The resistance strain type force transducer has the advantages of simple structure, high accuracy and wide application range, and can be used in the environment with poor relative ratio. Therefore, resistance strain gauge load cells are widely used in weighing apparatus. The load cell is self-contained as the heart of the electronic scale product, and its performance largely determines the accuracy and stability of the electronic scale.
The existing force measuring sensor is poor in stability, easy to damage during force measurement, short in service life and not accurate enough in measurement, and therefore the force measuring sensor with the buffer structure is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a force cell sensor with buffer structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a force transducer with a buffer structure comprises a buffer mechanism, a lower pressure pad, a sensing mechanism, a reinforcing mechanism and an upper pressure head, the buffer mechanism comprises a buffer mechanism body, a first connecting seat, a first shock absorber and a second shock absorber, the lower pressure pad comprises a lower pressure pad body and a base, the sensing mechanism comprises a resistance strain tube, the reinforcing mechanism comprises a reinforcing mechanism body, the upper pressure head comprises an upper pressure head body, one end of each of the plurality of buffering mechanism bodies is respectively connected with one end of the plurality of first shock absorbers, the other end of each of the plurality of buffering mechanism bodies is respectively connected with one end of the plurality of second shock absorbers, one end of each of the plurality of first connecting seats is connected with the lower surface of the lower pressure pad body, resistance strain tube one end is connected with the base side surface, strengthening mechanism body lower surface and base upper surface welding, strengthening mechanism body upper surface and last pressure head body lower surface welding.
Preferably, buffer gear still includes the second connecting seat, and is a plurality of the first bumper shock absorber other end welds with a plurality of first connecting seat other ends respectively, and is a plurality of the second bumper shock absorber other end welds with a plurality of second connecting seat one end respectively, and wherein, there are four buffer gear bodies, first connecting seat, first bumper shock absorber, second bumper shock absorber and second connecting seat, and the buffer gear body is damping spring, and first connecting seat and second connecting seat are responsible for connecting and bear the weight of the mechanism, and the buffer gear body, first bumper shock absorber and second bumper shock absorber have improved the stability of device.
Preferably, the lower pressure pad further comprises a membrane, the lower surface of the base is welded with the upper surface of the lower pressure pad body, the membrane is installed inside the base, and when two surfaces of the membrane are under the action of different pressures, the membrane moves to the surface with low pressure in a strain mode, so that the center of the membrane generates displacement which has a certain relation with pressure difference.
Preferably, sensing mechanism still includes sensing mechanism body, resistance strain gauge, bridge circuit pipe, sensing piece and wire, wire one end is connected with sensing mechanism body one end, the sensing mechanism body other end is connected with sensing piece one end, the sensing piece other end is connected with bridge circuit pipe one end, bridge circuit pipe other end is connected with resistance strain gauge one end, the resistance strain gauge other end is connected with the resistance strain gauge other end, and resistance strain gauge perception to resistance change's signal makes bridge circuit pipe lose balance output one and the electric quantity signal of telecommunication of external force linear proportional change, and this signal of telecommunication output to terminal is exported to the wire at last.
Preferably, the strengthening mechanism still includes connecting block, rotatory pipe, presss from both sides tight strip and adjusting bolt, and is a plurality of connecting block one end all welds with strengthening mechanism body one end, and is a plurality of the connecting block side surface is equipped with a plurality of through-holes respectively, and is a plurality of rotatory pipe both ends respectively with a plurality of through-hole normal running fit, a plurality of press from both sides tight strip one end respectively with a plurality of rotatory pipe side surface welding, a plurality of press from both sides the tight strip other end and be equipped with a plurality of round holes respectively, it is a plurality of adjusting bolt respectively with a plurality of round hole normal running fit, wherein, the connecting block has four, and rotatory pipe, press from both sides tight strip and adjusting bolt all have two, through adjusting bolt's locking force, improved.
Preferably, it still includes elastomer, buffer spring, buffer and sealing washer, a plurality of to go up the pressure head buffer spring one end all is connected with the elastomer lower surface, and is a plurality of the buffer spring other end is connected with a plurality of buffer one end respectively, and is a plurality of the buffer other end all with the upper surface welding of sealing washer, surface welding on sealing washer lower surface and the last pressure head body, wherein, buffer spring and buffer all have four, and after receiving exogenic action, paste and produce deformation thereupon at the elastomer, arouse resistance change, electronic circuit can be protected to the sealing washer, and buffer spring and buffer have improved the stability of device, prevent that the sensor from receiving the damage when the dynamometry.
Compared with the prior art, the beneficial effects of the utility model are that:
the sealing ring can protect an electronic circuit, the buffer mechanism, the buffer spring and the buffer improve the stability of the device, the sensor is prevented from being damaged during force measurement, the structural strength of the joint of the force measurement sensor is improved through the locking force of the adjusting bolt, and the service life of the force measurement sensor is prolonged.
When the two sides of the diaphragm are under the action of different pressures, the diaphragm moves to the side with low pressure in a strain mode, the center of the diaphragm generates displacement which has a certain relation with pressure difference, after the diaphragm is under the action of external force, the diaphragm is pasted on the elastic body and deforms accordingly, resistance change is caused, the resistance strain block senses a signal of the resistance change, the bridge circuit tube outputs an electric quantity electric signal which changes in a linear and direct proportion mode with the external force in an unbalanced mode, and finally the electric signal is output to a terminal through a wire, so that the electric quantity electric signal is more accurate.
Drawings
Fig. 1 is a schematic view of the overall structure of a load cell with a buffer structure.
FIG. 2 is a top view of a load cell with a cushioning structure.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.
Fig. 4 is a schematic structural view of a sensing mechanism in a load cell with a buffer structure.
FIG. 5 is a schematic view of a reinforcement mechanism in a load cell with a cushioning structure.
In the figure: 100. a buffer mechanism; 110. a first connecting seat; 120. a first shock absorber; 130. a second shock absorber; 140. a second connecting seat; 200. a lower pressure pad; 210. a membrane; 220. a base; 300. a sensing mechanism; 310. a resistive strain block; 320. a bridge circuit tube; 330. a sensing block; 340. a wire; 350. a resistance strain tube; 400. a reinforcement mechanism; 410. connecting blocks; 420. rotating the tube; 430. a clamping bar; 440. adjusting the bolt; 500. an upper pressure head; 510. an elastomer; 520. a buffer spring; 530. a buffer; 540. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1 to 5, in an embodiment of the present invention, a force sensor with a buffer structure includes a buffer mechanism 100, a lower pressure pad 200, a sensing mechanism 300, a reinforcing mechanism 400 and an upper pressure head 500, the buffer mechanism 100 includes a buffer mechanism body, a first connecting seat 110, a first shock absorber 120 and a second shock absorber 130, the lower pressure pad 200 includes a lower pressure pad body and a base 220, the sensing mechanism 300 includes a resistance strain tube 350, the reinforcing mechanism 400 includes a reinforcing mechanism body, the upper pressure head 500 includes an upper pressure head body, one end of the plurality of buffer mechanism bodies is connected to one end of the plurality of first shock absorbers 120, the other end of the plurality of buffer mechanism bodies is connected to one end of the plurality of second shock absorbers 130, one end of the plurality of first connecting seats 110 is connected to a lower surface of the lower pressure pad body, one end of the resistance strain tube 350 is connected to a side surface of the base 220, a lower surface of the reinforcing mechanism body is welded to an, the upper surface of the reinforcing mechanism body is welded with the lower surface of the upper pressure head body.
Wherein, the buffer gear 100 further includes a second connecting seat 140, the other ends of the first dampers 120 are respectively welded with the other ends of the first connecting seats 110, the other ends of the second dampers 130 are respectively welded with one ends of the second connecting seats 140, wherein, the buffer gear body, the first connecting seats 110, the first dampers 120, the second dampers 130 and the second connecting seats 140 are all four, the buffer gear body is a damping spring, the first connecting seats 110 and the second connecting seats 140 are responsible for connecting and bearing the mechanism, the buffer gear body, the first dampers 120 and the second dampers 130 improve the stability of the device.
The lower pressure pad 200 further includes a diaphragm 210, the lower surface of the base 220 is welded to the upper surface of the lower pressure pad body, the diaphragm 210 is installed inside the base 220, and when two surfaces of the diaphragm 210 are under different pressures, the diaphragm 210 moves to a surface with a lower pressure in a strained manner, so that the center of the diaphragm generates a displacement in a certain relationship with a pressure difference.
Wherein, sensing mechanism 300 still includes the sensing mechanism body, resistance strain gauge 310, bridge circuit pipe 320, sensing block 330 and wire 340, wire 340 one end is connected with sensing mechanism body one end, the sensing mechanism body other end is connected with sensing block 330 one end, the sensing block 330 other end is connected with bridge circuit pipe 320 one end, the bridge circuit pipe 320 other end is connected with resistance strain gauge 310 one end, the resistance strain gauge 310 other end is connected with resistance strain pipe 350 other end, resistance strain gauge 310 perception to resistance change's signal, make bridge circuit pipe 320 lose balance output one with the electric quantity signal of the linear proportional change of external force, wire 340 exports this signal of electric quantity to the terminal finally.
Wherein, the strengthening mechanism 400 still includes connecting block 410, rotatory pipe 420, press from both sides tight strip 430 and adjusting bolt 440, a plurality of connecting block 410 one end all with strengthening mechanism body one end welding, a plurality of connecting block 410 side surface is equipped with a plurality of through-holes respectively, a plurality of rotatory pipe 420 both ends respectively with a plurality of through-hole normal running fit, a plurality of tight strip 430 one end of pressing from both sides respectively with a plurality of rotatory pipe 420 side surface welding, a plurality of tight strip 430 other ends of pressing from both sides are equipped with a plurality of round holes respectively, a plurality of adjusting bolt 440 respectively with a plurality of round hole normal running fit, wherein, connecting block 410 has four, rotatory pipe 420, it all has two to press from both sides tight strip 430 and adjusting bolt 440, locking force through adjusting bolt 440, the structural strength of.
Wherein, go up pressure head 500 and still include elastomer 510, buffer spring 520, buffer 530 and sealing washer 540, a plurality of buffer spring 520 one end all is connected with elastomer 510 lower surface, a plurality of buffer spring 520 other ends are connected with a plurality of buffer 530 one end respectively, a plurality of buffer 530 other ends all with sealing washer 540 upper surface welding, sealing washer 540 lower surface and last pressure head body upper surface welding, wherein, buffer spring 520 and buffer 530 all have four, receive external force effect after, paste and produce deformation thereupon at elastomer 510, arouse resistance change, sealing washer 540 can protect electronic circuit, buffer spring 520 and buffer 530 have improved the stability of device, prevent that the sensor from receiving the damage when the dynamometry.
The utility model discloses a theory of operation is:
the sealing ring 540 can protect the electronic circuit, the buffer mechanism 100, the buffer spring 520 and the buffer 530 improve the stability of the device, prevent the sensor from being damaged during force measurement, improve the structural strength of the joint of the force measurement sensor through the locking force of the adjusting bolt 440, and prolong the service life of the force measurement sensor. When two sides of the diaphragm 210 are under different pressures, the diaphragm 210 moves to the side with lower pressure in a strained manner, so that the center of the diaphragm generates displacement in a certain relationship with the pressure difference, and after the diaphragm is under the action of an external force, the diaphragm is adhered to the elastic body 510 to deform along with the elastic body, so that resistance change is caused, the resistance strain block 310 senses a signal of the resistance change, the bridge circuit tube 320 loses balance and outputs an electric quantity signal which changes in linear proportion to the external force, and finally the electric signal is output to a terminal through the lead 340.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a load cell with buffer structure, includes buffer gear (100), pushes down pad (200), sensing mechanism (300), strengthening mechanism (400) and last pressure head (500), its characterized in that: the buffer mechanism (100) comprises a buffer mechanism body, a first connecting seat (110), a first shock absorber (120) and a second shock absorber (130), the lower pressure pad (200) comprises a lower pressure pad body and a base (220), the sensing mechanism (300) comprises a resistance strain tube (350), the reinforcing mechanism (400) comprises a reinforcing mechanism body, the upper pressure head (500) comprises an upper pressure head body, one end of the buffer mechanism body is connected with one end of each of the first shock absorbers (120), the other end of the buffer mechanism body is connected with one end of each of the second shock absorbers (130), one end of each of the first connecting seats (110) is connected with the lower surface of the lower pressure pad body, one end of each of the resistance strain tubes (350) is connected with the side surface of the base (220), the lower surface of the reinforcing mechanism body is welded with the upper surface of the base (220), and the upper surface of the reinforcing mechanism body is welded with the lower surface of the upper pressure head body.
2. The load cell with a cushioning structure of claim 1, wherein: the buffer mechanism (100) further comprises a second connecting seat (140), the other ends of the first dampers (120) are respectively welded with the other ends of the first connecting seats (110), and the other ends of the second dampers (130) are respectively welded with one ends of the second connecting seats (140).
3. The load cell with a cushioning structure of claim 1, wherein: the lower pressure pad (200) further comprises a membrane (210), the lower surface of the base (220) is welded with the upper surface of the lower pressure pad body, and the membrane (210) is installed inside the base (220).
4. The load cell with a cushioning structure of claim 1, wherein: sensing mechanism (300) still includes sensing mechanism body, resistance strain gauge (310), bridge circuit pipe (320), sensing block (330) and wire (340), wire (340) one end is connected with sensing mechanism body one end, the sensing mechanism body other end is connected with sensing block (330) one end, the sensing block (330) other end is connected with bridge circuit pipe (320) one end, bridge circuit pipe (320) other end is connected with resistance strain gauge (310) one end, resistance strain gauge (310) other end and resistance strain gauge (350) other end are connected.
5. The load cell with a cushioning structure of claim 1, wherein: strengthening mechanism (400) still include connecting block (410), rotatory pipe (420), press from both sides tight strip (430) and adjusting bolt (440), and is a plurality of connecting block (410) one end all welds with strengthening mechanism body one end, and is a plurality of connecting block (410) side surface is equipped with a plurality of through-holes respectively, and is a plurality of rotatory pipe (420) both ends respectively with a plurality of through-hole normal running fit, a plurality of press from both sides tight strip (430) one end respectively with a plurality of rotatory pipe (420) side surface welding, it is a plurality of press from both sides tight strip (430) other end and be equipped with a plurality of round holes respectively, it is a plurality of adjusting bolt (440) respectively with.
6. The load cell with a cushioning structure of claim 1, wherein: go up pressure head (500) and still include elastomer (510), buffer spring (520), buffer (530) and sealing washer (540), a plurality of buffer spring (520) one end all is connected with elastomer (510) lower surface, and is a plurality of buffer spring (520) other end is connected with a plurality of buffers (530) one end respectively, and is a plurality of buffer (530) other end all with sealing washer (540) upper surface welding, sealing washer (540) lower surface and last pressure head body upper surface welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022369183.8U CN213455924U (en) | 2020-10-22 | 2020-10-22 | Force cell sensor with buffer structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022369183.8U CN213455924U (en) | 2020-10-22 | 2020-10-22 | Force cell sensor with buffer structure |
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| CN213455924U true CN213455924U (en) | 2021-06-15 |
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| CN202022369183.8U Active CN213455924U (en) | 2020-10-22 | 2020-10-22 | Force cell sensor with buffer structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114148163A (en) * | 2022-01-18 | 2022-03-08 | 重庆长安汽车股份有限公司 | Oil filler cap assembly with screwing monitoring component and vehicle |
| CN116026515A (en) * | 2023-03-29 | 2023-04-28 | 深圳市鑫精诚传感技术有限公司 | Six-axis force sensor with accurate force measurement |
-
2020
- 2020-10-22 CN CN202022369183.8U patent/CN213455924U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114148163A (en) * | 2022-01-18 | 2022-03-08 | 重庆长安汽车股份有限公司 | Oil filler cap assembly with screwing monitoring component and vehicle |
| CN114148163B (en) * | 2022-01-18 | 2023-09-22 | 重庆长安汽车股份有限公司 | Filler cap assembly with tightening monitoring assembly and vehicle |
| CN116026515A (en) * | 2023-03-29 | 2023-04-28 | 深圳市鑫精诚传感技术有限公司 | Six-axis force sensor with accurate force measurement |
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