CN110626128A - Wheel tire pressure monitoring and adjusting device - Google Patents
Wheel tire pressure monitoring and adjusting device Download PDFInfo
- Publication number
- CN110626128A CN110626128A CN201911072912.9A CN201911072912A CN110626128A CN 110626128 A CN110626128 A CN 110626128A CN 201911072912 A CN201911072912 A CN 201911072912A CN 110626128 A CN110626128 A CN 110626128A
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- China
- Prior art keywords
- boosting
- base
- mounting groove
- push rod
- top seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 239000000872 buffer Substances 0.000 claims abstract description 16
- 239000007853 buffer solution Substances 0.000 claims abstract description 5
- 230000003139 buffering effect Effects 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 4
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a wheel tire pressure monitoring and adjusting device, which comprises a boosting device, a boosting buffer device, a pressure reducing device, an arc-shaped base and an intelligent processing system, wherein the boosting device comprises a boosting base and a boosting top seat, the top of the boosting base is provided with a first mounting groove, the boosting top seat is mounted in the first mounting groove, the boosting buffer device comprises a buffer base and a buffer top seat, the top of the buffer base is provided with a second mounting groove, the bottom of the buffer top seat is mounted in the second mounting groove, a buffer spring is fixedly mounted at the central position of the inner side wall at the bottom of the second mounting groove, the pressure reducing device comprises a pressure reducing base and a pressure reducing top seat, the top of the pressure reducing base is provided with a third mounting groove, the bottom of the pressure reducing top seat is mounted in the third mounting groove, a circuit board is mounted on the inner side wall at the bottom of, simple structure, high safety and high cost performance.
Description
Technical Field
The invention belongs to the field of tire accessories, and particularly relates to a wheel tire pressure monitoring and adjusting device.
Background
With the improvement of the quality of life, vehicles are more and more on the road. Various strange traffic accidents are inevitable. Driving safety has been a concern and there is relevant data that indicates that approximately 70% of traffic accidents are due to flat tires. And the most easily-occurred tire burst is on the highway, the automobile can run safely, and the tire and the ground generate friction and the tire is supported. On the expressway, a very serious result can be generated once a tire burst occurs, wherein the tire pressure is one of important factors for causing the tire burst, the tire pressure is greatly damaged whether being too high or too low, and when being too low. The tire is unevenly stressed. Resulting in an increase in the temperature of the tire, which is likely to cause delamination of the rubber or cord breakage. Eventually leading to the occurrence of a flat tire, and when the tire pressure is too high, it is easy to cause the tire contact area to become small, thereby accelerating the wear in the middle. When the tire meets small stones which are slightly sharp or obstacles, the tire is easy to burst, even if the tire pressure is well adjusted. Along with the rolling of the tire, the principle of expansion and contraction of air is adopted. The tire surface is always elastically deformed. Due to the principle of expansion with heat and contraction with cold, the tire pressure of the tire can be increased, and the weather condition can also influence the tire pressure of the tire to work in winter or rainy days. The continuous reduction of temperature leads to the reduction of tire pressure, therefore, the importance of the tire pressure monitoring and adjusting device is needless to say, the accident rate can be reduced, the driving safety is ensured, but the tire pressure monitoring and adjusting device in the market at present is realized by inflation and deflation when the tire pressure is adjusted, on one hand, the air supply mode of the air supply equipment which is arranged outside the wheel is very complicated, the tire is communicated with the external part, if the air supply system is damaged, the possibility of tire burst is increased, the danger is high, the installation of the inflation system is complicated, the air supply equipment needs high pressure and the cost is high, on the other hand, if a high-pressure air storage chamber is arranged in the tire, the pressure can only be increased, the pressure can not be reduced, and under the condition that the tire pressure is not leaked, the most possible leading factor of the abnormal tire pressure is the temperature, therefore, the function of the tire pressure monitoring and adjusting device in the market, the invention provides a wheel tire pressure monitoring and regulating device, which has a complex structure and low cost performance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a wheel tire pressure monitoring and adjusting device which is reasonable in design, simple in structure, high in safety and high in cost performance.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a wheel tire pressure monitoring and adjusting device, includes the device that steps up, buffer, pressure reduction means, arc base and intelligent processing system step up, the device that steps up includes the base that steps up and the footstock that steps up, mounting groove one has been seted up at the top of the base that steps up, the footstock that steps up is installed in mounting groove one, the buffer that steps up includes buffering base and buffering footstock, mounting groove two has been seted up at the top of buffering base, the bottom of buffering footstock is installed in mounting groove two, the central point department of the inside wall of two bottoms of mounting grooves fixed mounting has buffer spring, pressure reduction means includes pressure reduction base and pressure reduction footstock, mounting groove three has been seted up at the top of pressure reduction base, install in mounting groove three bottom of pressure reduction footstock, install the circuit board on the inside wall of three bottoms of mounting grooves, The buffer base and the pressure-reducing base are sequentially arranged at the top of the arc base from left to right, top grooves are formed in the central positions of the bottoms of the boosting top seat, the buffering top seat and the pressure-reducing top seat, the other end of the buffer spring is fixedly arranged on the inner side wall of the top groove at the bottom of the buffering top seat, the intelligent processing system comprises a processor, a temperature sensor, a pressure sensor, a boosting electric push rod and a pressure-reducing electric push rod, the boosting electric push rod is fixedly arranged at the central position of the inner side wall at the bottom of the mounting groove, the output shaft of the boosting electric push rod is fixedly arranged on the inner side wall of the top groove at the bottom of the boosting top seat, the pressure-reducing electric push rod is fixedly arranged at the central position of the inner side wall at the three bottoms of the mounting groove, the output shaft of the pressure-reducing electric push rod is, the pressure sensor is fixedly installed on one side of the pressure reduction base, the processor is integrally installed on the circuit board, and the front side of the arc-shaped base is fixedly connected with a power line.
As a preferred mode of the present invention, the power line is electrically connected to the processor, the temperature sensor, the pressure sensor, the voltage-boosting electric push rod and the voltage-reducing electric push rod through the power supply circuit.
As a preferred mode of the present invention, the processor is electrically connected to the temperature sensor and the pressure sensor through the monitoring circuit, respectively.
As a preferable mode of the present invention, the processor is electrically connected to the voltage-boosting electric putter and the voltage-reducing electric putter respectively through the command circuit.
As a preferable mode of the present invention, the opening ends of the first mounting groove, the second mounting groove and the third mounting groove are fixedly provided with a sealing ring.
The invention has the beneficial effects that: the invention discloses a wheel tire pressure monitoring and adjusting device which comprises a boosting device, a boosting buffer device, a pressure reducing device, an arc-shaped base, a power line, a boosting base, a boosting top seat, a first mounting groove, a buffer base, a buffer top seat, a second mounting groove, a buffer spring, a pressure reducing base, a pressure reducing top seat, a third mounting groove, a circuit board, a processor, a temperature sensor, a pressure sensor, a boosting electric push rod, a pressure reducing electric push rod and a top groove.
1. The device for monitoring and adjusting the tire pressure of the wheel does not need external air supply, but changes the volume in the tire, thereby realizing the purpose of adjusting the tire pressure, effectively avoiding new dangerousness brought by connecting an external air source of the tire, effectively reducing the complexity of the structure, lowering the cost, having high cost performance and completely adjusting the change of the tire pressure brought by the temperature change.
2. This wheel tire pressure monitoring and adjusting device has high pressure adjusting device in the twinkling of an eye, can cushion the high pressure in the twinkling of an eye that leads to tire deformation to bring because the speed limit area is crossed with other foreign matters in the automobile is gone, on the one hand, can improve the travelling comfort of riding, and on the other hand can improve the security of driving, avoids the high pressure in the twinkling of an eye to cause the harm to the tire.
3. This wheel tire pressure monitoring and adjusting device convenient to use, simple to operate adjusts the accuracy, only when the tire pressure too high or low last 3 seconds and above, just carries out tire pressure and adjusts, can effectually avoid the regulation error that high pressure probably brought in the twinkling of an eye among the automobile driving process.
Drawings
FIG. 1 is a schematic structural diagram of a tire pressure monitoring and regulating device for a vehicle wheel;
FIG. 2 is a schematic cross-sectional view of a tire pressure monitoring and regulating device;
FIG. 3 is a schematic view of an intelligent processing system of a tire pressure monitoring and regulating device for a vehicle wheel;
in the figure: 1-boosting device, 2-boosting buffer device, 3-voltage-reducing device, 4-arc base, 5-power line, 6-boosting base, 7-boosting footstock, 8-mounting groove I, 9-buffering base, 10-buffering footstock, 11-mounting groove II, 12-buffering spring, 13-voltage-reducing base, 14-voltage-reducing footstock, 15-mounting groove III, 16-circuit board, 17-processor, 18-temperature sensor, 19-pressure sensor, 20-boosting electric push rod, 21-voltage-reducing electric push rod and 22-footstock.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 3, the present invention provides a technical solution: a wheel tire pressure monitoring and adjusting device comprises a boosting device 1, a boosting buffering device 2, a pressure reducing device 3, an arc-shaped base 4 and an intelligent processing system, wherein the boosting device 1 comprises a boosting base 6 and a boosting top seat 7, a first mounting groove 8 is formed in the top of the boosting base 6, the boosting top seat 7 is mounted in the first mounting groove 8, the boosting buffering device 2 comprises a buffering base 9 and a buffering top seat 10, a second mounting groove 11 is formed in the top of the buffering base 9, the bottom of the buffering top seat 10 is mounted in the second mounting groove 11, a buffering spring 12 is fixedly mounted at the central position of the inner side wall at the bottom of the second mounting groove 11, the pressure reducing device 3 comprises a pressure reducing base 13 and a pressure reducing top seat 14, a third mounting groove 15 is formed in the top of the pressure reducing base 13, and the bottom of the pressure reducing top seat 14 is mounted in the, the intelligent processing system comprises a processor 17, a temperature sensor 18, a pressure sensor 19, a boosting electric push rod 20 and a voltage-reducing electric push rod 21, wherein the boosting electric push rod 20 is fixedly arranged at the central position of the inner side wall at the bottom of the first mounting groove 8, an output shaft of the boosting electric push rod 20 is fixedly arranged on the inner side wall of the top groove 22 at the bottom of the boosting top seat 7, and the voltage-reducing electric push rod 21 is fixedly arranged at the central position of the inner side wall at the bottom of the third mounting groove 15, the output shaft of step-down electric putter 21 fixed mounting is on the inside wall of top groove 22 of step-down footstock 14 bottom, temperature sensor 18 fixed mounting is in one side of base 6 that steps up, pressure sensor 19 fixed mounting is in one side of step-down base 13, treater 17 integrated mounting is on circuit board 16, the front side fixedly connected with power cord 5 of arc base 4.
In a preferred embodiment of the present invention, the power line 5 is electrically connected to the processor 17, the temperature sensor 18, the pressure sensor 19, the voltage-increasing electric push rod 20, and the voltage-decreasing electric push rod 21 through a power supply circuit.
In a preferred embodiment of the present invention, the processor 17 is electrically connected to the temperature sensor 18 and the pressure sensor 19 through monitoring circuits.
In a preferred embodiment of the present invention, the processor 17 is electrically connected to the step-up electric putter 20 and the step-down electric putter 21 respectively through a command circuit.
In a preferred embodiment of the present invention, the opening ends of the first mounting groove 8, the second mounting groove 11, and the third mounting groove 15 are fixedly mounted with sealing rings.
The working principle is as follows: when the vehicle tire pressure monitoring and adjusting device is used, the arc-shaped base 4 is attached to a hub and firmly welded, the vehicle tire pressure monitoring and adjusting device is connected to a vehicle tire pressure monitoring system and a vehicle power supply through the power line 5, then the vehicle tire is installed and inflated, the temperature sensor 18 and the pressure sensor 19 can respectively monitor the temperature and the tire pressure in the vehicle tire and transmit information to the processor 17, normally, the boosting electric push rod 20 is in a contraction state, the voltage reduction electric push rod 21 is in an extension state, when the vehicle tire pressure lasts for 3 seconds or more and is lower than a normal range, if the temperature is lower than the temperature when the tire pressure is normal, the processor 17 controls the boosting electric push rod 20 to extend, the boosting electric push rod 20 pushes the boosting top seat 7 out of one part of the installation grooves, so that the space in the vehicle tire is reduced, and the air volume in the vehicle tire is unchanged, when the tire pressure rises and reaches a normal range, when the temperature returns to normal, the processor 17 controls the boosting electric push rod 20 to reset, if the temperature is higher than the temperature when the tire pressure is normal, the problem of the tire pressure caused by abnormal thermal expansion and cold contraction of air is solved, the processor 17 also regulates the tire pressure, and simultaneously sends a warning to the vehicle-mounted tire pressure monitoring system so as to be processed later, similarly, when the tire pressure in the vehicle lasts for 3 seconds and is higher than the normal range, the processor 17 controls the decompression electric push rod 21 to contract, the decompression electric push rod 21 pulls the decompression top seat 14 into the mounting groove III 15, so that the space in the tire is increased, the air amount in the tire is not changed, therefore, the tire pressure is reduced, when the temperature in the tire returns to normal (under the action of exclusion force, the tire pressure rise can only be the reason of thermal expansion), the processor 17 controls the decompression electric push rod 21 to reset, when the tire is deformed and the tire pressure rises instantly due to passing speed limit belt and other foreign matters in the, the tire pressure presses the buffering top seat 10 into a part of the mounting groove II 11, thereby playing a role of buffering, on one hand, the riding comfort can be improved, on the other hand, the driving safety can be improved, the tire is prevented from being damaged by instantaneous high pressure, the tire pressure monitoring and adjusting device of the wheel does not need external air supply, but changes the volume in the tire, thereby realizing the purpose of adjusting the tire pressure, effectively avoiding new danger caused by connecting an external air source of the tire, the tire pressure monitoring and adjusting device for the wheel has the advantages of effectively reducing the structural complexity, reducing the cost, having high cost performance, being capable of completely adjusting the tire pressure change caused by the temperature change, being convenient to use and install, being accurate in adjustment, only when the tire pressure is too high or too low for 3 seconds or more, the tire pressure is regulated, and the regulation error possibly caused by instantaneous high pressure in the driving process of the automobile can be effectively avoided.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A wheel tire pressure monitoring and adjusting device comprises a boosting device (1), a boosting buffering device (2), a pressure reducing device (3), an arc-shaped base (4) and an intelligent processing system, and is characterized in that the boosting device (1) comprises a boosting base (6) and a boosting top seat (7), a first mounting groove (8) is formed in the top of the boosting base (6), the boosting top seat (7) is mounted in the first mounting groove (8), the boosting buffering device (2) comprises a buffering base (9) and a buffering top seat (10), a second mounting groove (11) is formed in the top of the buffering base (9), the bottom of the buffering top seat (10) is mounted in the second mounting groove (11), a buffering spring (12) is fixedly mounted at the central position of the inner side wall at the bottom of the second mounting groove (11), the pressure reducing device (3) comprises a pressure reducing base (13) and a pressure reducing top seat (14), mounting groove three (15) have been seted up at the top of step-down base (13), install in mounting groove three (15) the bottom of step-down footstock (14), install circuit board (16) on the inside wall of mounting groove three (15) bottom, footstock (22) have all been seted up to the central point department of putting of step-up base (6), buffer base (9) and step-down base (13) from a left side to the right side of installing in proper order at the top of arc base (4), the central point department of putting of step-up footstock (7), buffer footstock (10) and step-down footstock (14) bottom, the other end fixed mounting of buffer spring (12) is on the inside wall of the footstock (22) of buffer footstock (10) bottom, intelligent processing system includes treater (17), temperature sensor (18), pressure sensor (19), electric putter (20) and step-down electric putter (21), step-up electric putter (20) fixed mounting is in the central point department of putting of mounting groove (8) The output shaft of the boosting electric push rod (20) is fixedly installed on the inner side wall of a top groove (22) at the bottom of the boosting top seat (7), the central position of the output shaft of the stepping-down electric push rod (21) is fixedly installed on the inner side wall of the inner side wall at the bottom of the three (15) installation grooves, the output shaft of the stepping-down electric push rod (21) is fixedly installed on the inner side wall of the top groove (22) at the bottom of the stepping-down top seat (14), the temperature sensor (18) is fixedly installed on one side of the boosting base (6), the pressure sensor (19) is fixedly installed on one side of the stepping-down base (13), the processor (17) is integrally installed on the circuit board (16), and the front side of the arc-shaped base (4.
2. The tire pressure monitoring and regulating device of a vehicle wheel as claimed in claim 1, wherein: the power line (5) is respectively and electrically connected with the processor (17), the temperature sensor (18), the pressure sensor (19), the boosting electric push rod (20) and the voltage reduction electric push rod (21) through a power supply circuit.
3. The tire pressure monitoring and regulating device of a vehicle wheel as claimed in claim 1, wherein: the processor (17) is electrically connected with the temperature sensor (18) and the pressure sensor (19) through the monitoring circuit respectively.
4. The tire pressure monitoring and regulating device of a vehicle wheel as claimed in claim 1, wherein: the processor (17) is electrically connected with the boosting electric push rod (20) and the reducing electric push rod (21) through the instruction circuit respectively.
5. The tire pressure monitoring and regulating device of a vehicle wheel as claimed in claim 1, wherein: and sealing rings are fixedly arranged in the opening ends of the first mounting groove (8), the second mounting groove (11) and the third mounting groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072912.9A CN110626128B (en) | 2019-11-05 | 2019-11-05 | Tire pressure monitoring and adjusting device for vehicle wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072912.9A CN110626128B (en) | 2019-11-05 | 2019-11-05 | Tire pressure monitoring and adjusting device for vehicle wheels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110626128A true CN110626128A (en) | 2019-12-31 |
| CN110626128B CN110626128B (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911072912.9A Active CN110626128B (en) | 2019-11-05 | 2019-11-05 | Tire pressure monitoring and adjusting device for vehicle wheels |
Country Status (1)
| Country | Link |
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| CN (1) | CN110626128B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600620A (en) * | 2013-09-12 | 2014-02-26 | 邵宏 | Oil-saving temperature control automatic pressure adjusting hub |
| CN203496588U (en) * | 2013-09-25 | 2014-03-26 | 长安大学 | Automatic automobile tire pressure adjusting device |
| CN105459727A (en) * | 2015-12-16 | 2016-04-06 | 无锡夕阳康科技有限公司 | Automatic pressure adjusting belt for hub |
| WO2018010874A1 (en) * | 2016-07-13 | 2018-01-18 | Continental Reifen Deutschland Gmbh | Vehicle wheel and method for pressure adjustment in a vehicle wheel |
| CN107933219A (en) * | 2017-12-12 | 2018-04-20 | 成都育芽科技有限公司 | A kind of automotive wheel tire pressure monitoring and control and regulation method |
| CN210680295U (en) * | 2019-11-05 | 2020-06-05 | 武汉优斯特传感器科技有限公司 | Wheel tire pressure monitoring and adjusting device |
-
2019
- 2019-11-05 CN CN201911072912.9A patent/CN110626128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600620A (en) * | 2013-09-12 | 2014-02-26 | 邵宏 | Oil-saving temperature control automatic pressure adjusting hub |
| CN203496588U (en) * | 2013-09-25 | 2014-03-26 | 长安大学 | Automatic automobile tire pressure adjusting device |
| CN105459727A (en) * | 2015-12-16 | 2016-04-06 | 无锡夕阳康科技有限公司 | Automatic pressure adjusting belt for hub |
| WO2018010874A1 (en) * | 2016-07-13 | 2018-01-18 | Continental Reifen Deutschland Gmbh | Vehicle wheel and method for pressure adjustment in a vehicle wheel |
| CN107933219A (en) * | 2017-12-12 | 2018-04-20 | 成都育芽科技有限公司 | A kind of automotive wheel tire pressure monitoring and control and regulation method |
| CN210680295U (en) * | 2019-11-05 | 2020-06-05 | 武汉优斯特传感器科技有限公司 | Wheel tire pressure monitoring and adjusting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110626128B (en) | 2024-05-03 |
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