CN104864929A - Magnetic induction shaftless character wheel for character wheel counter - Google Patents
Magnetic induction shaftless character wheel for character wheel counter Download PDFInfo
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- CN104864929A CN104864929A CN201510364581.1A CN201510364581A CN104864929A CN 104864929 A CN104864929 A CN 104864929A CN 201510364581 A CN201510364581 A CN 201510364581A CN 104864929 A CN104864929 A CN 104864929A
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- character wheel
- hollow cylinder
- wheel body
- shaftless
- counter
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Abstract
The invention relates to the field of measuring equipment, in particular to a magnetic induction shaftless character wheel for a character wheel counter. The character wheel comprises a character wheel body and a hollow cylinder, wherein a circle of step-by-step protruding teeth are uniformly distributed on the circumference edge of one side of the character wheel body; the hollow cylinder is arranged at the middle part of the character wheel body and is coaxial with the character wheel body; the length of the hollow cylinder is bigger than the thickness of the character wheel body, and the hollow cylinder stretches out towards the two sides of the character wheel body; round magnetic steel is coaxially and fixedly arranged in the hollow cylinder. The character wheel provided by the invention avoids a shaft in the middle of a conventional character wheel, and adopts the hollow cylinder arranged in the middle part of the character wheel as a supporting body; the round magnetic steel is fixedly arranged in the hollow cylinder, so that a user can obtain the rotation angle of the character wheel through measuring the rotation angle of the round magnetic steel; the character wheel provided by the invention is simple in preparation process, easy to realize automatic production, low in the possibility of problem occurrence in the production process, and higher in accuracy through the method of measuring the choosing angle to measure the character wheel reading.
Description
Technical field
The present invention relates to measuring equipment field, particularly the shaftless character wheel of a kind of magnetic strength for character wheel counter.
Background technology
The mode that the data acquisition of current steam table is counted by character wheel mostly gathers, and is the mode such as photo-electronic directly reading or tongue tube induction reading to the reading mode majority of character wheel; Wherein, the character wheel of photo-electronic directly reading mode is used usually to need to make photic zone on character wheel, photic zone arranges through hole, and the such as patent No. is the patent of invention " direct-reading encode counter " of 200620033842.8, is provided with arc light tank exactly on coding print wheel.But thisly need to make the character wheel of photic zone and have and be not easy to manufacture, be easily out of shape after completing, the problem that defect rate is high, and this character wheel is in use due to off-centring, causes during installation and be not easy to the problems such as zeroing operation; And the character wheel adopting tongue tube to respond to reading mode needs to arrange permanent magnet in each digit position of character wheel, cause character wheel complex manufacturing technology.
Summary of the invention
Goal of the invention of the present invention is to overcome and adopts photo-electronic directly reading character wheel and tongue tube induction character wheel complex manufacturing technology, and the problem that defect rate is high, provides the shaftless character wheel of magnetic strength of a kind of easy manufacture, installation.
To achieve these goals, the technical solution used in the present invention is: the shaftless character wheel of a kind of magnetic strength for character wheel counter, comprises,
Character wheel body, the circumferential edges of a side of character wheel body is evenly equipped with a circle stepping and dashes forward tooth.
Hollow cylinder, to be arranged in the middle part of described character wheel body and vertical with described character wheel body, and described hollow cylinder cross section is coaxial with described character wheel body, and described hollow cylinder length is greater than the thickness of described character wheel body and stretches out to described character wheel body both sides; A circular magnet steel is coaxially fixedly installed in described hollow cylinder.
Further, described circular magnet steel is disc magnet steel or circular magnetic steel.
Further, described circular magnet steel is the cylindrical magnet steel of bipolarity radial magnetizing.
Described hollow cylinder diameter of section is 9.02mm to 9.06mm
Further, described character wheel body is not arranged the dash forward circumferential edges place of opposite side of tooth of described stepping to be provided with carry and to dash forward tooth.Described carry tooth of dashing forward carries out carry transmission between character wheel is for adjacent character wheel during character wheel group.
Further, the circumference side of character wheel body is divided into 0 ~ 90 digit position, namely each digit position takies character wheel circumference 36 degree of radian sizes, each position can be selected display label or not show label, do not show label to refer to, only to determine in ten positions divided equally that one is after 0, determines each digit position according to character wheel sense of rotation, but not by numerical reference on character wheel.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
Character wheel provided by the invention eliminates the axle in the middle of traditional character wheel, by being arranged on hollow cylinder in the middle part of character wheel as supporter, at described hollow cylinder internal fixtion, one circular magnet steel is set, make user can be obtained the anglec of rotation of character wheel by the anglec of rotation measuring described circular magnet steel, character wheel manufacturing process provided by the invention simply, easily realizes automated production, and production run should not go wrong.And measure character wheel reading by measuring the mode of selected angle there is higher degree of accuracy.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the character wheel provided in the embodiment of the present invention.
Fig. 2 is the front elevation of the character wheel provided in the embodiment of the present invention.
Fig. 3 is the right view of Fig. 2.
Bracing frame when Fig. 4 is character wheel provided by the invention installation.
Mark in figure: 1-character wheel body, 2-hollow cylinder, 3-magnet steel, 4-stepping is dashed forward tooth, and 5-carry is dashed forward tooth, 61,62-bracing frame one, bracing frame two, 611,621-semi-circular recesses.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1:as shown in Figures 1 to 3, goal of the invention of the present invention is to overcome the problem that being subject to of adopting photo-electronic directly reading mode the to cause installation process tongue tube that ambient light conditions impact or tongue tube induction reading mode cause easily breaks, a kind of angle rotated by measuring character wheel is adopted to obtain the direct access mode of character wheel reading: for prior art Problems existing, to provide a kind of.
To achieve these goals, the technical solution used in the present invention is: the shaftless character wheel of a kind of magnetic strength for character wheel counter, comprises,
Character wheel body 1, the circumferential edges of a side of character wheel body 1 is evenly equipped with a circle stepping and dashes forward tooth 4, and described stepping tooth 4 of dashing forward makes described character wheel rotate for receiving the outside power that transmits; The circumferential edges place of opposite side is provided with carry and dashes forward tooth 5, the circumference side of character wheel body 1 is divided into 0 ~ 90 digit position, namely each digit position takies character wheel circumference 36 degree of radian sizes, each position can be selected display label or not show label, do not show label to refer to, only to determine in ten positions divided equally that one is after 0, determines each digit position according to character wheel choosing dress direction order, but not by numerical reference on character wheel.
Hollow cylinder 2, to be arranged in the middle part of described character wheel body 1 and vertical with described character wheel body, and described hollow cylinder 2 cross section is coaxial with described character wheel body 1, and described hollow cylinder 2 length is greater than the thickness of described character wheel body 1 and stretches out to described character wheel body 1 both sides; A circular magnet steel 3 is coaxially fixedly installed in described hollow cylinder 2.It should be noted, described hollow cylinder and described character wheel body, also for being fixedly installed, therefore just can rotate with described character wheel.
Further, described circular magnet steel 3 is disc magnet steel or circular magnetic steel.
Further, described circular magnet steel 3 is the cylindrical magnet steel of bipolarity radial magnetizing.
Described hollow cylinder diameter of section is 9.02mm to 9.06mm.
During use, on described character wheel is placed on as shown in Figure 4 bracing frame by hollow cylinder 2, (support frame as described above comprises base 63, bracing frame 1 and bracing frame 2 62; Support frame as described above 1 and bracing frame 2 62 are provided with the semi-circular recesses 611,621 agreed with described hollow cylinder 2 shape.Described character wheel rotates by being placed on by hollow cylinder in described semi-circular recesses 611,621), described character wheel by described stepping dash forward tooth accept rotating force rotate, be arranged in parallel in any side of described character wheel angle detection device, if angular transducer is (also known as magnetic coder, as chip MMA253F), when described character wheel rotates, described circular magnet steel rotates with described character wheel, described angular transducer obtains the angle of described character wheel rotation according to the changes of magnetic field of described circular magnet steel, thus obtains the current reading of described character wheel; Because the angle sensing sensitivity of angular transducer to circular magnet steel is high, the rotation of described circular magnet steel 1 degree can be recorded in theory, and in fact on character wheel ten numerals be corresponding 36 degree of radians, therefore adopt character wheel provided by the invention, the measurement result that precision is higher can be provided.
In some specific embodiments, conveniently install, described angular transducer is arranged on collection plate, and described collection plate can be plugged on the circuit board at processor (being responsible for the angle conversion that each character wheel rotates being numeral and output display) place.
In actual use, usually be all adopt the mode of character wheel group (also can individual character wheel be used alone) to count character wheel, therefore usual magnetic shielding cover is set between character wheel and character wheel, to prevent the magnetic force between different character wheel from interfering with each other, now carry out coordinating with described carry gear carry out carry transmission by described carry tooth, stepping tooth of dashing forward of dashing forward between adjacent character wheel.
embodiment 2:be with embodiment 1 difference, in the present embodiment, at the first fixing coaxial of described character wheel body central, described circular magnet steel is set, then in described character wheel body both sides, coaxial-symmetrical arranges the hollow cylinder of two sections of cross section formed objects as supporting respectively, and described symmetrically arranged two sections of hollow cylinder diameter of sections are greater than described circular magnet steel.The length of two sections of hollow cylinders can be identical or different, in fact the free end (one end be not connected with described character wheel) of two sections of hollow cylinders protrudes from described character wheel body, and described character wheel is supported on the bracing frame shown in Fig. 4 by two sections of hollow cylinders.
Identical with the character wheel in most prior art, the part of character wheel described in the present embodiment except described circular magnet steel makes by not possessing ferromagnetic material, e.g., can be but be not limited to plastics.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, comprise,
Character wheel body, the circumferential edges of a side of character wheel body is evenly equipped with a circle stepping and dashes forward tooth;
Hollow cylinder, to be arranged in the middle part of described character wheel body and vertical with described character wheel body, and described hollow cylinder cross section is coaxial with described character wheel body, and described hollow cylinder length is greater than the thickness of described character wheel body and stretches out to described character wheel body both sides; A circular magnet steel is coaxially fixedly installed in described hollow cylinder.
2., as claimed in claim 1 for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, described circular magnet steel is disc magnet steel or circular magnetic steel.
3., as claimed in claim 1 for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, described circular magnet steel is the cylindrical magnet steel of bipolarity radial magnetizing.
4., as claimed in claim 1 for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, described hollow cylinder diameter of section is 9.02mm to 9.06mm.
5. as claimed in claim 1 for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, described character wheel body does not arrange the dash forward opposite side circumferential edges place of tooth of described stepping and is provided with carry and dashes forward tooth.
6., as claimed in claim 1 for the shaftless character wheel of magnetic strength of character wheel counter, it is characterized in that, the circumference side of character wheel body is divided into 0 ~ 90 digit position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364581.1A CN104864929A (en) | 2015-06-29 | 2015-06-29 | Magnetic induction shaftless character wheel for character wheel counter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364581.1A CN104864929A (en) | 2015-06-29 | 2015-06-29 | Magnetic induction shaftless character wheel for character wheel counter |
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| CN104864929A true CN104864929A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510364581.1A Pending CN104864929A (en) | 2015-06-29 | 2015-06-29 | Magnetic induction shaftless character wheel for character wheel counter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675964A (en) * | 1993-04-27 | 1997-10-14 | Fritz Stahlecker | Open end spinning supporting disk with asymmetric magnetic rotational speed indicator |
| CN102628703A (en) * | 2012-03-01 | 2012-08-08 | 陈健 | Electronic direct reading counter of meter |
| CN202748077U (en) * | 2012-06-08 | 2013-02-20 | 陈健 | Reading character wheel of measuring instrument |
| CN102944257A (en) * | 2012-09-10 | 2013-02-27 | 浙江先芯科技有限公司 | Numerical word wheel of direct-reading gage |
| CN204694314U (en) * | 2015-06-29 | 2015-10-07 | 成都千嘉科技有限公司 | The shaftless character wheel of a kind of magnetic strength for character wheel counter |
-
2015
- 2015-06-29 CN CN201510364581.1A patent/CN104864929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675964A (en) * | 1993-04-27 | 1997-10-14 | Fritz Stahlecker | Open end spinning supporting disk with asymmetric magnetic rotational speed indicator |
| CN102628703A (en) * | 2012-03-01 | 2012-08-08 | 陈健 | Electronic direct reading counter of meter |
| CN202748077U (en) * | 2012-06-08 | 2013-02-20 | 陈健 | Reading character wheel of measuring instrument |
| CN102944257A (en) * | 2012-09-10 | 2013-02-27 | 浙江先芯科技有限公司 | Numerical word wheel of direct-reading gage |
| CN204694314U (en) * | 2015-06-29 | 2015-10-07 | 成都千嘉科技有限公司 | The shaftless character wheel of a kind of magnetic strength for character wheel counter |
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Application publication date: 20150826 |
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