CN112002508A - Resistance box - Google Patents
Resistance box Download PDFInfo
- Publication number
- CN112002508A CN112002508A CN202010861583.2A CN202010861583A CN112002508A CN 112002508 A CN112002508 A CN 112002508A CN 202010861583 A CN202010861583 A CN 202010861583A CN 112002508 A CN112002508 A CN 112002508A
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- China
- Prior art keywords
- resistance
- rotating shaft
- disc
- box
- output
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- 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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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/06—Adjustable resistors adjustable by short-circuiting different amounts of the resistive element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/16—Adjustable resistors including plural resistive elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/50—Adjustable resistors structurally combined with switching arrangements
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The invention discloses a resistance box, comprising: the device comprises a box body, a plurality of resistance turntables, an output high end and an output low end, wherein each resistance turntable comprises a resistance disc, a word disc and a rotary switch; the resistance disc and the character disc are arranged in the box body; the rotary switch comprises a first rotating shaft for placing the character disc, a second rotating shaft for placing the resistance disc and a coupler for connecting the first rotating shaft and the second rotating shaft; the box body comprises a display panel, and the display panel is provided with an indicating window for displaying numerical values on the dial; the resistance disc comprises a plurality of resistors connected in series, a plurality of connecting contact sheets respectively arranged at two ends of each resistor, two contact switches and two wiring terminals connected with the output ends of the resistors connected in series, wherein first contacts of the two contact switches are fixedly connected with the second rotating shaft, and second contacts of the two contact switches are movably connected with the plurality of connecting contact sheets; two connecting terminals of the resistor discs are connected in series, and the output ends of the series connection are respectively connected with the output high end and the output low end. The invention can conveniently read data and is convenient to carry.
Description
Technical Field
The embodiment of the invention relates to the technical field of resistor boxes, in particular to a resistor box.
Background
The high-voltage high-resistance box is a standard resistor apparatus commonly used in the verification and calibration work of the insulation resistance meter. High-voltage high-resistance boxes produced at home and abroad generally adopt a decimal rotating disc type structure, and the high-voltage high-resistance box with the resistance range reaching T omega magnitude is generally composed of about ten resistance rotating discs. The existing high-voltage high-resistance box has the defects of large volume, heavy weight, inconvenience in transportation, field calibration and use and the like.
The output resistance value of the existing high-voltage high-resistance box needs 3 steps. Firstly, reading the numerical value indicated by each resistance disc knob in turn (the numerical value is printed on the front panel); then multiplying the resistance multiplying power corresponding to the resistance disc to obtain the resistance of the current resistance disc; and finally, adding the resistance values of all the resistance discs to obtain the output resistance value of the high-voltage high-resistance box. The existing high-voltage high-resistance box cannot directly indicate the output resistance value, the whole reading process is too complicated, and the calibration work efficiency is influenced.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a resistor box, which is light and convenient and can visually read the resistance.
In order to achieve the above object, an embodiment of the present invention provides a resistance box, including: the device comprises a box body, a plurality of resistance turntables, an output high end and an output low end, wherein each resistance turntable comprises a resistance disc, a word disc and a rotary switch; the resistance disc and the word disc are placed in the box body, and the rotary switch, the output high end and the output low end are arranged on the box body;
the rotary switch comprises a first rotating shaft, a second rotating shaft and a coupler, the character disc is arranged on the first rotating shaft, the resistance disc is arranged on the second rotating shaft, and the first rotating shaft is connected with the second rotating shaft through the coupler;
the box body comprises a display panel, an indication window is arranged on the display panel, and the numerical value on the dial is displayed through the indication window;
the resistance disc comprises a plurality of resistors, a plurality of connecting contact pieces, two contact switches and two wiring terminals, the resistors are connected in series, the connecting contact pieces are respectively arranged at two ends of each resistor, first contacts of the two contact switches are fixedly connected with the second rotating shaft, and second contacts of the two contact switches are movably connected with the connecting contact pieces; the output end of the plurality of resistors connected in series is connected with the two wiring terminals, and the first contact of the two-contact switch is connected with the two wiring terminals; two connecting terminals of the plurality of resistance discs are connected in series, and the output ends of the two connecting terminals of the plurality of resistance discs which are connected in series are respectively connected with the output high end and the output low end;
when the rotary switch rotates once, the first rotating shaft drives the dial to rotate for a certain angle, so that the target numerical value on the dial is displayed in the indicating window; and the second contact installed on the second rotating shaft is connected with the contact piece in a switching way, so that the output end outputs the resistance value of the target numerical value.
Further, rotary switch still includes knob and fixed cover, the one end of first pivot is passed display panel with the knob is fixed, the other end of first pivot passes fixed cover, fixed cover is fixed display panel keeps away from one side of knob, right first pivot is fixed.
Furthermore, the rotary switch also comprises a base, and the base is fixed on the first rotating shaft penetrating through the fixed sleeve.
Further, the word disc is mounted on the base.
Furthermore, one end of the coupler is connected with the first rotating shaft, and the other end of the coupler is connected with the second rotating shaft.
Furthermore, a groove is formed in the fixing sleeve, a rotating plate is arranged on the first rotating shaft, and the rotating plate is fixed in the groove through the fixing sleeve.
Further, the dial includes a plurality of sector areas and a plurality of values, each of the sector areas corresponding to one of the values.
Further, the angle of each sector is 30 degrees.
Further, the numeric systems on the word disks are not identical, including decimal and 1, 2, 5 step systems.
Further, the display panel includes a ground terminal.
According to the resistance box provided by the embodiment of the invention, the word disc and the resistance disc are driven to coaxially rotate through the rotary switch, so that the resistance value of the target numerical value is output by the output terminal, the corresponding target numerical value can be observed through the indicating window, and data can be conveniently read; and the word dish and resistance dish adopt mixed step-by-step carousel formula structure, have reduced the volume and the weight of resistance case, portable.
Drawings
Fig. 1 is a first schematic diagram of a resistance box of the present invention.
Fig. 2 is a second schematic diagram of the resistance box of the present invention.
Fig. 3 is a third schematic diagram of the resistance box of the present invention.
Fig. 4 is a first schematic view of the resistance plate of the present invention.
Fig. 5 is a second schematic view of the resistance plate of the present invention.
Fig. 6 is a first schematic view of a connection structure of a first rotating shaft and a second rotating shaft according to the present invention.
Fig. 7 is a second schematic view of the connection structure of the first rotating shaft and the second rotating shaft according to the present invention.
A, a box body; B. a rotary switch; C. a resistance turntable; D. a resistance disc; 1. a resistor; 2. two contact switches; 3. an output low end; 4. a second rotating shaft; 5. a knob; 6. an indication window; 7. a display panel; 8. a first rotating shaft; 80. rotating the plate; 9. fixing a sleeve; 90. a groove; 10. a character plate; 11. a base; 12. a coupling; 13. two connecting terminals; 14. an output high end; 15. a ground terminal; 16. connecting a contact piece; 20. a second contact; 21. a first contact.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a resistance box according to an embodiment of the present invention is shown, including: the device comprises a box body A, a plurality of resistance turntables C, an output high end 14 and an output low end 3, wherein each resistance turntable C comprises a resistance disc D, a word disc 10 and a rotary switch B; the resistance disc D and the word disc 10 are placed in the box body A, and the rotary switch B, the output high end 14 and the output low end 3 are arranged on the box body A;
with reference to fig. 6 and 7, the rotary switch B includes a first rotating shaft 8, a second rotating shaft 4 and a coupling 12, the dial 10 is disposed on the first rotating shaft 8, the resistor disc D is disposed on the second rotating shaft 4, and the first rotating shaft 8 and the second rotating shaft 4 are connected through the coupling 12;
the box body A comprises a display panel 7, an indication window 6 is arranged on the display panel 7, and the numerical value on the dial 10 is displayed through the indication window 6;
with continuing reference to fig. 4 and fig. 5, the resistor disc D includes a plurality of resistors 1, a plurality of connection contact pieces 16, two contact switches 2, and two connection terminals 13, the plurality of resistors 1 are connected in series, the plurality of connection contact pieces 16 are respectively disposed at two ends of each resistor 1, first contacts 21 of the two contact switches 2 are fixedly connected to the second rotating shaft 4, and second contacts 20 of the two contact switches 2 are movably connected to the plurality of connection contact pieces 16; one end of the plurality of resistors 1 connected in series is connected with one of the two connection terminals 13 as an output end, and the first contact 21 of the two-contact switch 2 is connected with the other connection terminal of the two connection terminals 13 as an output end; two connecting terminals 13 of the plurality of resistor discs D are connected in series, one end of the output end of the series connection is connected with the output high end 14, and the other end is connected with the output low end 3; the plurality of connecting contact pieces 16 are respectively arranged at two ends of each resistor 1, the first contacts 21 of the two-contact switches 2 are fixedly connected with the second rotating shaft 4, and the second contacts 20 of the two-contact switches 2 are movably connected with the plurality of connecting contact pieces 16;
when the rotary switch B rotates once, the first rotating shaft 8 drives the dial 10 to rotate by a certain angle, preferably 30 degrees, so that the target numerical value on the dial 10 is displayed in the indication window 6; the second contact 20 mounted on the second rotary shaft 4 switches the connection contact piece 16 so that the output high side 14 and the output low side 3 output the resistance values of the target values.
Illustratively, the numerical values correspond to the output resistance values of the resistance disc D one to one. When the dial 10 rotates, the resistance value corresponding to the single numerical value displayed on the dial 10 is observed to be just the current output resistance value of the resistance disc D through the indicating window 6.
Illustratively, the display panel 7 includes a ground terminal 15.
Specifically, please refer to fig. 4, in this embodiment, four resistance discs D are disposed on the resistance box according to the requirement, including a T Ω resistance disc D, G Ω resistance disc D, M Ω resistance disc D and a k Ω resistance disc D, the resistance box is a high voltage resistance box, the four resistance discs D are sequentially connected in series and placed in a box body a, and the box body a is preferably a metal box. The display panel 7 is provided with three terminals including an output high terminal 14, i.e., an HI terminal; the output low side 3, namely the LO side; and a ground terminal 15, also referred to as a ground shield terminal (GND). Each resistance disc D is formed by connecting 10 standard resistors 1 in series, and the output ends of the series are respectively connected with two wiring terminals 13 to output the resistance value at the moment. The first contact 21 of the two-contact switch 2 is a static contact, is connected with the second rotating shaft 4, and drives the second rotating shaft 4 and the second contact 20 to rotate along with the rotation of the first rotating shaft 8; the second contact 20 is a movable contact, and when the resistor disc D rotates, the position of the second contact 20 changes and is connected to the connecting contact 16 of the next resistor 1 after rotation, so that the resistance value between the two connection terminals 13 changes. When the rotary switch B rotates, the first rotating shaft 8 drives the character disc 10 and the resistor disc D to synchronously rotate; due to the shielding effect of the display panel 7 of the box body A, a single resistance value on the word disc 10 can be observed through the indicating window 6, the numerical value of the word disc 10 is consistent with the resistance value of the resistance disc D after the movement, the single resistance value displayed on the word disc 10 is just the current output resistance value of the resistance disc D, the reading is simple and direct, and the working efficiency of operators is improved.
Illustratively, the resistor of each resistor disc D is composed of 10 standard resistors connected in series, and the specific connection is as follows:
the resistor of the T omega resistor disc D is formed by connecting 10 standard resistors 1 with the resistance value of 1T omega in series;
the resistor of the G omega resistor disc D is formed by connecting standard resistors 1 with the resistance values of 1G omega, 3G omega, 5G omega, 10G omega, 30G omega, 50G omega, 100G omega, 300G omega and 500G omega in series;
the resistor of the M omega resistor disc D is formed by connecting standard resistors 1 with the resistance values of 1M omega, 3M omega, 5M omega, 10M omega, 30M omega, 50M omega, 100M omega, 300M omega and 500M omega in series;
the resistors of the k Ω resistor pad D are formed by connecting standard resistors 1 having resistances of 1k Ω, 3k Ω, 5k Ω, 10k Ω, 30k Ω, 50k Ω, 100k Ω, 300k Ω, and 500k Ω in series.
For example, referring to fig. 2 and fig. 3, the rotary switch B further includes a knob 5 and a fixing sleeve 9, one end of the first rotating shaft 8 passes through the display panel 7 and is fixed to the knob 5, the fixing sleeve 9 is fixed to the display panel 7, the other end of the first rotating shaft 8 passes through the fixing sleeve 9, the fixing sleeve 9 is fixed to a side of the display panel 7 away from the knob 5, and fixes the first rotating shaft 8, and the knob 5 is preferably an aluminum alloy knob. When the knob 5 is rotated, the first rotating shaft 8 is driven to rotate by the same angle in the same direction; the first rotating shaft 8 drives the second rotating shaft 4 and the second contact 20 of the resistor disc D to rotate by the same angle in the same direction through the coupler 12, so that the output resistance of the resistor disc D is changed.
Exemplarily, the rotary switch B further includes a base 11, the dial 10 is installed on the base 11, the first rotating shaft 8 passes through the fixing sleeve 9 and also passes through the base 11, the dial 10 is installed on the base 11, and the first rotating shaft 8 drives the dial 10 to coaxially rotate.
Illustratively, the numerical value scale on the word disk 10 is not identical, and is a mixed scale. The T omega-shaped disc adopts a decimal system, and the G omega-shaped disc, the M omega-shaped disc and the k omega-shaped disc adopt 1, 2 and 5 step systems, so that a mixed stepping rotating disc type structure is formed, the volume and the weight of the resistance box are reduced, and the resistance box is convenient to transport and use on site.
Illustratively, one end of the coupler 12 is connected to the first rotating shaft 8, the other end of the coupler 12 is connected to the second rotating shaft 4, and when the first rotating shaft 8 rotates, the coupler 12 drives the second rotating shaft 4 to rotate coaxially by the same angle, so that the corresponding dial 10 rotates with the second contact 20 of the resistor disc D.
Illustratively, the fixing sleeve 9 is provided with a groove 90, the first rotating shaft 8 is provided with a rotating plate 80, and the base 11 fixes the rotating plate 80 in the groove 90, so that the first rotating shaft 8 rotates more stably.
Illustratively, the dial 10 includes a plurality of sectors and a plurality of values, each of the sectors corresponding to one of the values; the angle of each sector is 30 degrees. The dial 10 is divided into 12 sector areas, the angle of each sector area is 30 degrees, 11 different output resistance values of the corresponding resistance disc D are printed in the 1 st to 11 th sector areas respectively and are arranged in sequence according to the circumference, and the 12 th sector area has no display content. The resistance values indicated by the respective sectors on the dial 10 are shown in the following table.
Illustratively, the first rotating shaft 8 is a step rotating shaft, and the angle of the step rotating shaft is 30 degrees every time the knob 5 rotates.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A resistance box, comprising: the device comprises a box body, a plurality of resistance turntables, an output high end and an output low end, wherein each resistance turntable comprises a resistance disc, a word disc and a rotary switch; the resistance disc and the word disc are placed in the box body, and the rotary switch, the output high end and the output low end are arranged on the box body;
the rotary switch comprises a first rotating shaft, a second rotating shaft and a coupler, the character disc is arranged on the first rotating shaft, the resistance disc is arranged on the second rotating shaft, and the first rotating shaft is connected with the second rotating shaft through the coupler;
the box body comprises a display panel, an indication window is arranged on the display panel, and the numerical value on the dial is displayed through the indication window;
the resistance disc comprises a plurality of resistors, a plurality of connecting contact pieces, two contact switches and two wiring terminals, the resistors are connected in series, the connecting contact pieces are respectively arranged at two ends of each resistor, first contacts of the two contact switches are fixedly connected with the second rotating shaft, and second contacts of the two contact switches are movably connected with the connecting contact pieces; the output end of the plurality of resistors connected in series is connected with the two wiring terminals, and the first contact of the two-contact switch is connected with the two wiring terminals; two connecting terminals of the plurality of resistance discs are connected in series, and the output ends of the two connecting terminals of the plurality of resistance discs which are connected in series are respectively connected with the output high end and the output low end;
when the rotary switch rotates once, the first rotating shaft drives the dial to rotate for a certain angle, so that the target numerical value on the dial is displayed in the indicating window; and the second contact installed on the second rotating shaft is connected with the contact piece in a switching way, so that the output end outputs the resistance value of the target numerical value.
2. The resistance box according to claim 1, wherein the rotary switch further comprises a knob and a fixing sleeve, one end of the first shaft passes through the display panel and is fixed to the knob, the other end of the first shaft passes through the fixing sleeve, and the fixing sleeve is fixed to a side of the display panel away from the knob to fix the first shaft.
3. The resistance box of claim 2, wherein said rotary switch further comprises a base, said base being fixed to said first shaft passing through said fixture housing.
4. A resistor box according to claim 3, characterized in that the word disc is mounted on the base.
5. The resistance box of claim 1, wherein one end of the coupler is connected to the first shaft and the other end of the coupler is connected to the second shaft.
6. The resistance box of claim 3, wherein said retaining sleeve is provided with a recess, said first shaft is provided with a rotating plate, and said retaining sleeve retains said rotating plate within said recess.
7. The resistance box of claim 1, wherein said dial includes a plurality of sectors and a plurality of values, one for each of said sectors.
8. A resistor box according to claim 7, characterized in that the angle of each sector is 30 degrees.
9. The resistance box of claim 7, wherein the scale of the values on the word plate are not identical.
10. The resistance box of claim 1, wherein the display panel comprises a ground terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010861583.2A CN112002508A (en) | 2020-08-25 | 2020-08-25 | Resistance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010861583.2A CN112002508A (en) | 2020-08-25 | 2020-08-25 | Resistance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112002508A true CN112002508A (en) | 2020-11-27 |
Family
ID=73470442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010861583.2A Pending CN112002508A (en) | 2020-08-25 | 2020-08-25 | Resistance box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112002508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363028A (en) * | 2021-06-30 | 2021-09-07 | 安徽功率电气有限公司 | Resistor convenient to use |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883704A (en) * | 1994-09-09 | 1996-03-26 | Murata Mfg Co Ltd | High voltage variable resistor |
| CN203607179U (en) * | 2013-12-04 | 2014-05-21 | 广东美的制冷设备有限公司 | Resistor box |
| CN204884729U (en) * | 2015-07-15 | 2015-12-16 | 齐齐哈尔齐三机床有限公司 | Resistance box |
| CN205451952U (en) * | 2016-03-15 | 2016-08-10 | 厦门瑞德利校准检测技术有限公司 | Resistance box with adjustable high accuracy |
| CN207165327U (en) * | 2017-03-30 | 2018-03-30 | 广州市高铁计量检测维修有限公司 | A kind of high current resistance box |
-
2020
- 2020-08-25 CN CN202010861583.2A patent/CN112002508A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883704A (en) * | 1994-09-09 | 1996-03-26 | Murata Mfg Co Ltd | High voltage variable resistor |
| CN203607179U (en) * | 2013-12-04 | 2014-05-21 | 广东美的制冷设备有限公司 | Resistor box |
| CN204884729U (en) * | 2015-07-15 | 2015-12-16 | 齐齐哈尔齐三机床有限公司 | Resistance box |
| CN205451952U (en) * | 2016-03-15 | 2016-08-10 | 厦门瑞德利校准检测技术有限公司 | Resistance box with adjustable high accuracy |
| CN207165327U (en) * | 2017-03-30 | 2018-03-30 | 广州市高铁计量检测维修有限公司 | A kind of high current resistance box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363028A (en) * | 2021-06-30 | 2021-09-07 | 安徽功率电气有限公司 | Resistor convenient to use |
| CN113363028B (en) * | 2021-06-30 | 2023-02-03 | 安徽功率电气有限公司 | Resistor convenient to use |
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Application publication date: 20201127 |
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| RJ01 | Rejection of invention patent application after publication |