CN203688019U - Character wheel device of metering instrument - Google Patents
Character wheel device of metering instrument Download PDFInfo
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- CN203688019U CN203688019U CN201420037601.5U CN201420037601U CN203688019U CN 203688019 U CN203688019 U CN 203688019U CN 201420037601 U CN201420037601 U CN 201420037601U CN 203688019 U CN203688019 U CN 203688019U
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- character wheel
- wheel
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- described character
- moving tooth
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a character wheel device of a metering instrument. The character wheel device of the metering instrument is compact in structure, small in occupied space, large in display area and rapid in assembly and comprises a character wheel box (1), a character wheel shaft (5), a head character wheel (21), multiple auxiliary character wheels (22), carry-bit cones (3) and a character wheel support (6). The character wheel support (6) is provided with a shaft hole (60) and an eccentric shaft (63) and fixed to the character wheel box (1). The character wheel shaft (5) is rotationally connected with the character wheel support (6) through the shaft hole (60). The head character wheel (21) is fixed to the character wheel shaft (5). The auxiliary character wheels (22) are sequentially arranged on the character wheel support (6) in a sleeved mode and rotationally connected with the character wheel support (6). The auxiliary character wheels (22) and the head character wheel (21) are combined together. The carry-bit cones (3) are located between the adjacent auxiliary character wheels (22) and located in cavities between the head character wheel (21) and the corresponding auxiliary character wheels (22). The eccentric shaft (63) is sleeved with the carry-bit cones (3) which can rotate. Transmission carry-bit operation is achieved between the adjacent auxiliary character wheels (22) and between the head character wheel (21) and the corresponding auxiliary character wheels (22) through carry-bit gear teeth (30). The character wheel device of the metering instrument can be widely applied to the field of metering instruments.
Description
Technical field
The utility model relates to a kind of character wheel device of measuring instrument.
Background technology
The measuring instruments such as water meter, ammeter, gas meter are common fluid foods gauging instruments, traditional measuring instrument all needs to be provided with character wheel device, so that visual and clear reading out data, even if the most emerging intelligent metering instrument often can not lack traditional character wheel device.
As depicted in figs. 1 and 2; the character wheel device of traditional measuring instrument generally comprise for the protection of inner body and install fixing use character wheel box 90, be positioned at the print wheel component 40 of character wheel box 90, for print wheel component 40 being shown to numerical value carries out the carry gear wheel assembly 80 of carry transmission; two sides of print wheel component 40 are respectively equipped with axial eccentric setting and the outwardly reversed column 41 and 42 for transpose and carry; carry gear wheel is between two adjacent character wheels, and by moving tooth 81 transmission that is meshed with reversed column 41 and 42 respectively.The evagination reversed column structure of this character wheel device makes the overall width of character wheel itself larger, but less for the wheel face relative width of numerical value is set, between the two, also need to arrange in addition gear wheel, make the gap between character wheel larger, the entirety of character wheel device takes up room larger.And the carry gear wheel assembly 80 of this character wheel device needs independent rotating shaft, trouble of its assembling.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of compact conformation, little, the display area of taking up room is large, assemble the character wheel device of measuring instrument efficiently.
The technical scheme that the utility model adopts is: the utility model comprises character wheel box, print wheel shaft, character wheel, several character wheel and carry gear wheel, on described carry gear wheel, edge is circumferentially with the carry gear teeth, the character wheel device of described measuring instrument also comprises character wheel support, the center of described character wheel support is provided with axis hole, described character wheel support is provided with the excentric shaft paralleling with described axis hole, described character wheel support is fixed in described character wheel box, described print wheel shaft is rotated and is connected with described character wheel support by described axis hole, described character wheel is fixed on described print wheel shaft, described character wheel in the form of a ring, described in several, time character wheel is socketed on successively on described character wheel support and can rotates around described character wheel support respectively, described in several, time character wheel and described character wheel are by end face successively closing together, described carry gear wheel lays respectively in the cavity in the cavity between described time adjacent character wheel and between adjacent described character wheel and described character wheel, and described carry gear wheel is all socketed on described excentric shaft and take described excentric shaft as rotation axis, between described time adjacent character wheel and between described adjacent character wheel and described character wheel, realize transmission carry by the described carry gear teeth.
Described character wheel box is provided with character wheel axis hole, and described print wheel shaft passes respectively the described axis hole of described character wheel axis hole and described character wheel support, so that described character wheel support is carried out to location, axle center; In described character wheel box, be provided with locating slot, one end of described character wheel support is provided with location convex tendon, and described location convex tendon inserts in described locating slot, so that described character wheel support is circumferentially located.
The lateral wall of described character wheel support is cylindric, on the inwall of described character wheel, is provided with axle journal in axial middle part, and described time character wheel is suitable by the lateral wall of described axle journal and described character wheel support, thereby rotates and be connected with described character wheel support.
One end of described character wheel support is provided with positioning boss, a described character wheel is by the sidewall closing of described axle journal and described positioning boss, so that described in this character wheel carried out to axial location, and by each described character wheel and described character wheel successively closing together, finally suitable by a side inwall of described character wheel and described character wheel box, the length of the length of described character wheel support and described character wheel box inner chamber is suitable, so that described character wheel support and described character wheel and described character wheel are carried out to axial location; Described carry gear wheel lay respectively between the described axle journal of described time adjacent character wheel and adjacent described character wheel and the described axle journal of described character wheel between, each described carry gear wheel is realized axial location by the sidewall that is adjacent two described axle journals.
On the intracavity sidewall of described character wheel and described character wheel, be provided with carry moving tooth near an end, on the intracavity sidewall of described character wheel, be provided with several along circumferential uniform transpose moving tooth near another end, described carry moving tooth and described transpose moving tooth are radially and arrange, described transpose moving tooth forms internal tooth cylindrical gear, described character wheel of low order bit or the described carry moving tooth of described character wheel are oppositely arranged with the described transpose moving tooth than described character wheel of its high numerical digit, and the two is by the transmission that is meshed of the described carry gear teeth, described character wheel or described the every rotation one of character wheel of low order bit are enclosed 360 °, described carry moving tooth on it drives described carry gear wheel to rotate once, and drive than described character wheel of its high numerical digit and rotate a carry angle by the transmission of carry gear wheel, make it show that numeral adds one, thereby realize carry.
The character wheel device of described measuring instrument is decimal carry, on the wheel face of described character wheel and described character wheel, along being circumferentially laid with 0～9, totally ten demonstrations are digital, described carry angle is 36 °, described character wheel or described the every rotation one of character wheel of low order bit are enclosed 360 °, than 36 ° of the corresponding rotations of described character wheel of its high numerical digit.
The quantity of the described carry moving tooth on described character wheel and each described character wheel is two; The quantity of the described carry moving tooth on each described character wheel is 30, and the central angle between adjacent described transpose moving tooth is 12 °.
The described carry gear teeth comprise three the long teeth and six the short teeth that arrange uniformly at intervals, all described long teeth are concordant in the side near described transpose moving tooth with all described short teeth, and the transmission that is meshed with described transpose moving tooth, the described carry gear teeth are near the transmission that is only meshed with described carry moving tooth by described long tooth of a side of described carry moving tooth.
Described print wheel shaft is provided with annular knurl, and the axle center of described character wheel is provided with fixed orifice, and described character wheel is placed on described print wheel shaft and by described annular knurl interference fit and fixed by described fixed orifice.
On described character wheel box, be also provided with connecting pin with holes.
The beneficial effects of the utility model are: because the utility model comprises character wheel support, the center of described character wheel support is provided with axis hole, described character wheel support is provided with the excentric shaft paralleling with described axis hole, described character wheel support is fixed in described character wheel box, described print wheel shaft is rotated and is connected with described character wheel support by described axis hole, described character wheel is fixed on described print wheel shaft, described character wheel in the form of a ring, described in several, time character wheel is socketed on successively on described character wheel support and can rotates around described character wheel support respectively, described in several, time character wheel and described character wheel are by end face successively closing together, described carry gear wheel lays respectively in the cavity in the cavity between described time adjacent character wheel and between adjacent described character wheel and described character wheel, and described carry gear wheel is all socketed on described excentric shaft and take described excentric shaft as rotation axis, between described time adjacent character wheel and between described adjacent character wheel and described character wheel, realize transmission carry by the described carry gear teeth, the utility model is by being arranged at described carry gear wheel in the cavity in the cavity between described time adjacent character wheel and between adjacent described character wheel and described character wheel, make that described carry gear wheel is built-in not to be exposed, additionally do not take the space between each character wheel, compared with traditional character wheel device, each character wheel closing of the present utility model together, compact conformation, do not affect again each character wheel independent rotation counting, in same space, character wheel width of the present utility model can strengthen, make character wheel wheel face relative width larger, can make the reference numerals of wheel face strengthen, thereby more easily read and identification, in addition, described carry gear wheel of the present utility model is socketed on described excentric shaft, and described excentric shaft and described character wheel support are integrated, thereby reduce the axle center orientation assemble of described carry gear wheel, directly socket, efficiency of assembling is high, therefore the utility model compact conformation, take up room little, display area is larger, assembling is quick.
Accompanying drawing explanation
Fig. 1 is the section structure schematic diagram of the character wheel device of traditional measuring instrument;
Fig. 2 is the print wheel component of character wheel device and the structural representation of carry gear wheel assembly meshing relation of traditional measuring instrument;
Fig. 3 is the plan structure schematic diagram of the character wheel device of the utility model embodiment;
Fig. 4 is the decomposition texture schematic diagram of the character wheel device of the utility model embodiment;
Fig. 5 is the assembly relation perspective view of character wheel and the carry gear wheel of the utility model embodiment;
Fig. 6 is the perspective view of another angle of the character wheel of the utility model embodiment and the assembly relation of carry gear wheel;
Fig. 7 is the cross-sectional configuration schematic diagram that the character wheel device of the utility model embodiment removes character wheel box;
Fig. 8 is the longitudinal plane structure schematic diagram of the character wheel device of the utility model embodiment.
Embodiment
As shown in Fig. 3～Fig. 8, the character wheel device of the measuring instrument of the present embodiment comprises character wheel box 1, print wheel shaft 5, character wheel 21, five character wheels 22, five carry gear wheels 3, character wheel support 6, on described carry gear wheel 3, edge is circumferentially with the carry gear teeth 30, the center of described character wheel support 6 is provided with axis hole 60, described character wheel support 6 is provided with the excentric shaft 63 paralleling with described axis hole 60, described character wheel support 6 is fixed in described character wheel box 1, described print wheel shaft 5 is rotated and is connected with described character wheel support 6 by described axis hole 60, described character wheel 21 is fixed on described print wheel shaft 5, in the present embodiment, described print wheel shaft 5 is provided with annular knurl 50, the axle center of described character wheel 21 is provided with fixed orifice 210, described character wheel 21 is placed on described print wheel shaft 5 and by described annular knurl 50 interference fit and is connected and fixed by described fixed orifice 210, described character wheel 22 in the form of a ring, described in several, time character wheel 22 is socketed on successively on described character wheel support 6 and can rotates around described character wheel support 6 respectively, described in several, time character wheel 22 and described character wheel 21 are by end face successively closing together, described carry gear wheel 3 lays respectively in the cavity in the cavity between described time adjacent character wheel 22 and between adjacent described character wheel 21 and described character wheel 22, be that described carry gear wheel 3 is completely enclosed in inside and does not expose by described character wheel 21 and each described character wheel 22, and described carry gear wheel 3 is all socketed on described excentric shaft 63 and take described excentric shaft 63 as rotation axis, between described time adjacent character wheel 22 and between described adjacent character wheel 21 and described character wheel 22, realize transmission carry by the described carry gear teeth 30.
Described character wheel box 1 is provided with character wheel axis hole 10, and described print wheel shaft 5 passes respectively the described axis hole 60 of described character wheel axis hole 10 and described character wheel support 6, so that described character wheel support 6 is carried out to location, axle center; In described character wheel box 1, be provided with locating slot 11, one end of described character wheel support 6 is provided with location convex tendon 61, and described location convex tendon 61 inserts in described locating slot 11, so that described character wheel support 6 is circumferentially located, prevents its rotation.The lateral wall of described character wheel support 6 is cylindric, on the inwall of described character wheel 22, be provided with axle journal 220 in axial middle part, described time character wheel 22 is suitable with the lateral wall of described character wheel support 6 by described axle journal 220, thereby rotates and be connected with described character wheel support 6.One end of described character wheel support 6 is provided with positioning boss 64, described character wheel 22 sidewall closing with described positioning boss 64 by described axle journal 220, so that described in this character wheel 22 carried out to axial location, and by each described character wheel 22 and described character wheel 21 successively closing together, finally suitable with a side inwall of described character wheel box 1 by described character wheel 21, so that described character wheel support 6 and described character wheel 22 and described character wheel 21 are carried out to axial location; Described carry gear wheel 3 lay respectively between the described axle journal 220 of described time adjacent character wheel 22 and adjacent described character wheel 21 and the described axle journal 220 of described character wheel 22 between, to realize axial location, prevent play vertically.
On the intracavity sidewall of described character wheel 21 and described character wheel 22, be provided with carry moving tooth 28 near an end, the quantity of the described carry moving tooth 28 on a character wheel 21 described in the present embodiment and each described character wheel 22 is two, on the intracavity sidewall of described character wheel 22, be provided with circumferentially uniform transpose moving tooth 23 of 30 edges near another end, central angle between adjacent described transpose moving tooth 22 is 12 °, described carry moving tooth 28 and described transpose moving tooth 23 are radially and arrange, described transpose moving tooth 23 forms internal tooth cylindrical gear, the described carry gear teeth 30 form external tooth cylindrical gear, described character wheel 21 of low order bit or the described carry moving tooth 28 of described character wheel 22 are oppositely arranged with the described transpose moving tooth 23 than described character wheel 22 of its high numerical digit, and the two is by the transmission that is meshed of the described carry gear teeth 30, described character wheel 21 or described the every rotation one of character wheel 22 of low order bit are enclosed 360 °, described carry moving tooth 28 on it drives described carry gear wheel 3 to rotate once, and drive and rotate a carry angle than described character wheel 22 of its high numerical digit by 3 transmissions of carry gear wheel, make it show that numeral adds one, thereby realize carry.In the present embodiment, the character wheel device of described measuring instrument is decimal carry, on the wheel face of described character wheel 21 and described character wheel 22, along being circumferentially laid with 0～9, totally ten demonstrations are digital, described carry angle is 36 °, described character wheel 21 or described the every rotation one of character wheel 22 of low order bit are enclosed 360 °, than 36 ° of the corresponding rotations of described character wheel 22 of its high numerical digit.Certainly, the character wheel device of described measuring instrument can also be other system carries, corresponding, and demonstration numeral and described carry angle on the wheel face of described character wheel 21 and described character wheel 22 are carried out respective change.The described carry gear teeth 30 comprise three the long teeth 301 and six the short teeth 302 that arrange uniformly at intervals, all described long teeth 301 are concordant in the side near described transpose moving tooth 23 with all described short teeth 302, and the transmission that is meshed with described transpose moving tooth 23, the described carry gear teeth 30 are near the transmission that is only meshed with described carry moving tooth 28 by described long tooth 301 of a side of described carry moving tooth 28, be that described long tooth 301 can be inserted into engaged transmission between two described carry moving teeth 28, above structure makes transmission more accurately and is reliable, and processing technology is easy.The described carry gear teeth 30 form external tooth cylindrical gear, the internal tooth cylindrical gear forming with described transpose moving tooth 23 transmission that is meshed, and it is than the cylindricality gear drive adopting in traditional character wheel device is more reliable and intensity is better.In the present embodiment, on described character wheel box 1, be also provided with connecting pin with holes 12, so that character wheel device is fixing.
In the present embodiment, described character wheel support 6 is provided with a groove 68 vertically, described excentric shaft 63 is positioned at described groove 68, making described excentric shaft 63 not affect described character wheel 22 rotates around described character wheel support 6, on described excentric shaft 63, be socketed after described carry gear wheel 3, described carry gear wheel 3 can be meshed with described character wheel 21 and described character wheel 22 just, and therefore described excentric shaft 63 and the distance in described character wheel support 6 axle center are the reference radius that reference radius that eccentric throw equals described transpose moving tooth 23 deducts the described carry gear teeth 30.
The utility model is by being arranged at described carry gear wheel 3 in the cavity in the cavity between described time adjacent character wheel 22 and between adjacent described character wheel 21 and described character wheel 22, make that described carry gear wheel 3 is built-in not to be exposed, additionally do not take the space between each character wheel, compared with traditional character wheel device, each character wheel closing of the present utility model together, compact conformation, do not affect again each character wheel independent rotation counting, in same space, character wheel width of the present utility model can strengthen, make character wheel wheel face relative width larger, can make the reference numerals of wheel face strengthen, thereby more easily read and identification, in addition, described carry gear wheel 3 of the present utility model is socketed on described excentric shaft 63, and described excentric shaft 63 is integrated with described character wheel support 6, thereby reduce the axle center orientation assemble of described carry gear wheel 3, directly socket, efficiency of assembling is high, therefore the utility model compact conformation, take up room little, display area is larger, assembling is quick.
The utility model can be widely used in measuring instrument field.
Claims (10)
1. the character wheel device of a measuring instrument, comprise character wheel box (1), print wheel shaft (5), character wheel (21), several character wheel (22) and carry gear wheel (3), described carry gear wheel (3) is upper along being circumferentially with the carry gear teeth (30), it is characterized in that: the character wheel device of described measuring instrument also comprises character wheel support (6), the center of described character wheel support (6) is provided with axis hole (60), described character wheel support (6) is provided with the excentric shaft (63) paralleling with described axis hole (60), described character wheel support (6) is fixed in described character wheel box (1), described print wheel shaft (5) is rotated and is connected with described character wheel support (6) by described axis hole (60), described character wheel (21) is fixed on described print wheel shaft (5), described character wheel (22) in the form of a ring, described in several, time character wheel (22) is socketed on successively described character wheel support (6) above and can rotates around described character wheel support (6) respectively, described in several, time character wheel (22) and described character wheel (21) are by end face successively closing together, described carry gear wheel (3) lays respectively in the cavity in the cavity between adjacent described character wheel (22) and between adjacent described character wheel (21) and described character wheel (22), and described carry gear wheel (3) is all socketed on described excentric shaft (63) and take described excentric shaft (63) as rotation axis, between adjacent described character wheel (22) and between adjacent described character wheel (21) and described character wheel (22), realize transmission carry by the described carry gear teeth (30).
2. the character wheel device of measuring instrument according to claim 1, it is characterized in that: described character wheel box (1) is provided with character wheel axis hole (10), described print wheel shaft (5) passes respectively the described axis hole (60) of described character wheel axis hole (10) and described character wheel support (6), so that described character wheel support (6) is carried out to location, axle center; In described character wheel box (1), be provided with locating slot (11), one end of described character wheel support (6) is provided with location convex tendon (61), described location convex tendon (61) inserts in described locating slot (11), so that described character wheel support (6) is circumferentially located.
3. the character wheel device of measuring instrument according to claim 1, it is characterized in that: the lateral wall of described character wheel support (6) is cylindric, on the inwall of described character wheel (22), be provided with axle journal (220) in axial middle part, described character wheel (22) is suitable with the lateral wall of described character wheel support (6) by described axle journal (220), thereby rotates and be connected with described character wheel support (6).
4. the character wheel device of measuring instrument according to claim 3, it is characterized in that: one end of described character wheel support (6) is provided with positioning boss (64), a described character wheel (22) is the sidewall closing with described positioning boss (64) by described axle journal (220), so that described in this character wheel (22) carried out to axial location, and by each described character wheel (22) and described character wheel (21) successively closing together, finally suitable with a side inwall of described character wheel box (1) by described character wheel (21), so that described character wheel support (6) and described character wheel (22) and described character wheel (21) are carried out to axial location, described carry gear wheel (3) lays respectively between the described axle journal (220) of adjacent described character wheel (22) and between adjacent described character wheel (21) and the described axle journal (220) of described character wheel (22), to realize axial location.
5. the character wheel device of measuring instrument according to claim 1, it is characterized in that: on the intracavity sidewall of described character wheel (21) and described character wheel (22), be provided with carry moving tooth (28) near an end, on the intracavity sidewall of described character wheel (22), be provided with several along circumferential uniform transpose moving tooth (23) near another end, described carry moving tooth (28) and described transpose moving tooth (23) are radially and arrange, described transpose moving tooth (23) forms internal tooth cylindrical gear, described the character wheel (21) of low order bit or the described carry moving tooth (28) of described character wheel (22) be oppositely arranged than the described transpose moving tooth (23) of described the character wheel (22) of its high numerical digit, and the two is by the described carry gear teeth (30) transmission that is meshed, described the character wheel (21) of low order bit or the every rotation one of described character wheel (22) are enclosed 360 °, described carry moving tooth (28) on it drives described carry gear wheel (3) to rotate once, and drive than described the character wheel (22) of its high numerical digit and rotate a carry angle by carry gear wheel (3) transmission, make it show that numeral adds one, thereby realize carry.
6. the character wheel device of measuring instrument according to claim 5, it is characterized in that: the character wheel device of described measuring instrument is decimal carry, on the wheel face of described character wheel (21) and described character wheel (22), along being circumferentially laid with 0～9, totally ten demonstrations are digital, described carry angle is 36 °, described the character wheel (21) of low order bit or the every rotation one of described character wheel (22) are enclosed 360 °, than 36 ° of the corresponding rotations of described character wheel (22) of its high numerical digit.
7. the character wheel device of measuring instrument according to claim 5, is characterized in that: the quantity of the described carry moving tooth (28) on described character wheel (21) and each described character wheel (22) is two; The quantity of the described carry moving tooth (28) on each described character wheel (22) is 30, and the central angle between adjacent described transpose moving tooth (22) is 12 °.
8. the character wheel device of measuring instrument according to claim 5, it is characterized in that: the described carry gear teeth (30) comprise three the long teeth (301) and six the short teeth (302) that arrange uniformly at intervals, all described long teeth (301) are concordant in the side near described transpose moving tooth (23) with all described short teeth (302), and the transmission that is meshed with described transpose moving tooth (23), the described carry gear teeth (30) are near the transmission that is only meshed with described carry moving tooth (28) by described long tooth (301) of a side of described carry moving tooth (28).
9. the character wheel device of measuring instrument according to claim 1, it is characterized in that: described print wheel shaft (5) is provided with annular knurl (50), the axle center of described character wheel (21) is provided with fixed orifice (210), and described character wheel (21) is placed on by described fixed orifice (210) that described print wheel shaft (5) is gone up and fixes by described annular knurl (50) interference fit.
10. the character wheel device of measuring instrument according to claim 1, is characterized in that: on described character wheel box (1), be also provided with connecting pin with holes (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420037601.5U CN203688019U (en) | 2014-01-12 | 2014-01-12 | Character wheel device of metering instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420037601.5U CN203688019U (en) | 2014-01-12 | 2014-01-12 | Character wheel device of metering instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688019U true CN203688019U (en) | 2014-07-02 |
Family
ID=51009906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420037601.5U Expired - Lifetime CN203688019U (en) | 2014-01-12 | 2014-01-12 | Character wheel device of metering instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776504A (en) * | 2014-01-12 | 2014-05-07 | 梁永富 | Print wheel device of metering instrument |
-
2014
- 2014-01-12 CN CN201420037601.5U patent/CN203688019U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776504A (en) * | 2014-01-12 | 2014-05-07 | 梁永富 | Print wheel device of metering instrument |
| CN103776504B (en) * | 2014-01-12 | 2017-04-12 | 梁永富 | Print wheel device of metering instrument |
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Granted publication date: 20140702 |