CN201917284U - Tape measure - Google Patents
Tape measure Download PDFInfo
- Publication number
- CN201917284U CN201917284U CN2011200114199U CN201120011419U CN201917284U CN 201917284 U CN201917284 U CN 201917284U CN 2011200114199 U CN2011200114199 U CN 2011200114199U CN 201120011419 U CN201120011419 U CN 201120011419U CN 201917284 U CN201917284 U CN 201917284U
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- CN
- China
- Prior art keywords
- grid
- grating
- capacitor
- capacitance
- roller
- 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.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a tape measure with good accuracy and reliability. The tape measure comprises a casing with a hollow cavity, a measure belt which is curled in the hollow cavity and can also be drawn out of an opening of the casing or curled into the opening of the casing, a fixed grating of a capacitance grating sensor, a movable grating of the capacitance grating sensor and a display module, wherein the movable grating of the capacitance grating sensor is arranged at one face of the measure belt, a position opposite to one face is provided with the fixed grating of the capacitance grating sensor, the fixed grating of the capacitance grating sensor and the movable grating of the capacitance grating sensor form the capacitance grating sensor, and the fixed grating of the capacitance grating sensor also is electrically connected with a data processing unit of the display module. The tape measure is characterized in that both ends of the fixed grating of the capacitance grating sensor are respectively provided with a group of rollers, the number of each group of rollers is two, and each group of rollers is respectively positioned above and below the measure belt; moreover, the rolling faces of the rollers are jointed with the measure belt, and the measure belt part restricted between the two groups of rollers is parallel with the fixed grating of the capacitance grating sensor; and an annular groove for the passing of the movable grating of the capacitance grating sensor is arranged on the rolling face of the roller positioned at one face.
Description
Technical field
The utility model relates to the survey instrument technical field, specifically is a kind of tape measure.
Background technology
A kind of tape measure is arranged at present, it comprises the housing that is provided with cavity, being curled in also can be from the opening extraction of housing or the chi band that involves in the described cavity, the capacitor grid transducer fixed grid, the capacitor grid transducer moving grid, display module, described capacitor grid transducer moving grid is placed in the one side of chi band, the capacitor grid transducer fixed grid is settled in the position relative with described one side, described capacitor grid transducer fixed grid and capacitor grid transducer moving grid constitute capacitor grid transducer, described capacitor grid transducer fixed grid also is electrically connected with the data processing unit of display module, and electric signal that the data processing unit reception capacitor grid transducer fixed grid of display module transmits and processing back show the length that the chi band is drawn out by the display screen of display module.Though said structure has convenient reading, saves time, but its accuracy and reliability remain to be discussed, reason is, the chi band is being extracted out or is being involved in the process, described capacitor grid transducer fixed grid and the defection of capacitor grid transducer moving grid spacing change, these data that can cause capacitor grid transducer to record uncertain result such as beat.
The utility model content
The technical problems to be solved in the utility model is that the tape measure of a kind of accuracy and good reliability is provided.
The technical solution of the utility model is, the utility model tape measure, it comprises the housing that is provided with cavity, being curled in also can be from the opening extraction of housing or the chi band that involves in the described cavity, the capacitor grid transducer fixed grid, the capacitor grid transducer moving grid, display module, described capacitor grid transducer moving grid is placed in the one side of chi band, the capacitor grid transducer fixed grid is settled in the position relative with described one side, described capacitor grid transducer fixed grid and capacitor grid transducer moving grid constitute capacitor grid transducer, described capacitor grid transducer fixed grid also is electrically connected with the data processing unit of display module, one group of roller is respectively established at the two ends of described capacitor grid transducer fixed grid, every group of roller has two, lay respectively at the top of chi band and below, and the rolling surface of roller pastes mutually with the chi band, and the chi band portion that is limited between two groups of rollers is parallel with the capacitor grid transducer fixed grid; The rolling surface that is positioned at the roller of described one side is provided with the ring groove that passes through for the capacitor grid transducer moving grid.
After adopting said structure, the utility model compared with prior art, have the following advantages: because one group of roller is respectively established at the two ends of capacitor grid transducer fixed grid, every group of roller has two, lay respectively at the top of chi band and below, and the rolling surface of roller pastes mutually with the chi band, and the chi band that is limited between two groups of rollers is parallel with the capacitor grid transducer fixed grid; The rolling surface that is positioned at the roller of one side is provided with the ring groove that passes through for the capacitor grid transducer moving grid, like this, the chi band is being extracted out or is being involved in the process, distance can not change between described capacitor grid transducer fixed grid and capacitor grid transducer moving grid, so can overcome the defective of prior art, make the advantage that the utlity model has accuracy and good reliability.
Description of drawings
Accompanying drawing is the structural representation of the utility model tape measure.
Shown in the figure, 1, housing, 2, cavity, 3, chi band, 4, opening, 5, the capacitor grid transducer fixed grid, 6, capacitor grid transducer moving grid, 7, display module, 8, first roller, 9, first, 10, second roller, 11, second, 12, the 3rd roller, 13, the 3rd, the 14, the 4th roller, 15, the 4th.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model tape measure, it comprises the housing 1 that is provided with cavity 2, being curled in also can be from opening 4 extractions of housing 1 or the chi band 3 that involves in the described cavity 2, capacitor grid transducer fixed grid 5, capacitor grid transducer moving grid 6, display module 7, described capacitor grid transducer moving grid 6 is placed in the one side of chi band 3, capacitor grid transducer fixed grid 5 is settled in the position relative with described one side, described capacitor grid transducer fixed grid 5 and capacitor grid transducer moving grid 6 constitute capacitor grid transducer, described capacitor grid transducer fixed grid 5 also is electrically connected with the data processing unit of display module 7, one group of roller is respectively established at the two ends of described capacitor grid transducer fixed grid 6, every group of roller has two, lay respectively at the top of chi band 3 and below, and the rolling surface of roller pastes mutually with chi band 3, and the chi band portion that is limited between two groups of rollers is parallel with capacitor grid transducer fixed grid 5; The rolling surface that is positioned at the roller of described one side is provided with the ring groove that passes through for capacitor grid transducer moving grid 6.Concrete structure as shown in drawings.
In this example, described one side be chi band 3 below, the one group of roller that is positioned at the left end of capacitor grid transducer fixed grid 6 comprises first roller 8 that is installed on first 9, be installed on second 11 second roller 10, one group of roller of right-hand member comprises the 3rd roller 12 that is installed on the 3rd 13, be installed on the 4th 15 the 4th roller 14, the rolling surface of described second roller 10, the 4th roller 14 is provided with the ring groove that passes through for capacitor grid transducer moving grid 6, and described first 9, second 11, the 3rd 13, the 4th 15 all are installed on housing 1.Described first roller 8, second roller 10, the 3rd roller 12, the 4th roller 14 are rubber wheel.
Claims (1)
1. tape measure, it comprises the housing that is provided with cavity, being curled in also can be from the opening extraction of housing or the chi band that involves in the described cavity, the capacitor grid transducer fixed grid, the capacitor grid transducer moving grid, display module, described capacitor grid transducer moving grid is placed in the one side of chi band, the capacitor grid transducer fixed grid is settled in the position relative with described one side, described capacitor grid transducer fixed grid and capacitor grid transducer moving grid constitute capacitor grid transducer, described capacitor grid transducer fixed grid also is electrically connected with the data processing unit of display module, it is characterized in that, one group of roller is respectively established at the two ends of described capacitor grid transducer fixed grid, every group of roller has two, lay respectively at the top of chi band and below, and the rolling surface of roller pastes mutually with the chi band, and the chi band portion that is limited between two groups of rollers is parallel with the capacitor grid transducer fixed grid; The rolling surface that is positioned at the roller of described one side is provided with the ring groove that passes through for the capacitor grid transducer moving grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200114199U CN201917284U (en) | 2011-01-14 | 2011-01-14 | Tape measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200114199U CN201917284U (en) | 2011-01-14 | 2011-01-14 | Tape measure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917284U true CN201917284U (en) | 2011-08-03 |
Family
ID=44417078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200114199U Expired - Fee Related CN201917284U (en) | 2011-01-14 | 2011-01-14 | Tape measure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123719A (en) * | 2016-08-26 | 2016-11-16 | 四川鸿鑫空间测绘有限公司 | Double precision graphometric square |
-
2011
- 2011-01-14 CN CN2011200114199U patent/CN201917284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123719A (en) * | 2016-08-26 | 2016-11-16 | 四川鸿鑫空间测绘有限公司 | Double precision graphometric square |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20120114 |