CN205080953U - Rotatory multi -turn potentiometer of no backstop - Google Patents
Rotatory multi -turn potentiometer of no backstop Download PDFInfo
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- CN205080953U CN205080953U CN201520693295.5U CN201520693295U CN205080953U CN 205080953 U CN205080953 U CN 205080953U CN 201520693295 U CN201520693295 U CN 201520693295U CN 205080953 U CN205080953 U CN 205080953U
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- screw rod
- backstop
- reciprocating screw
- conductive copper
- pin bushing
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Abstract
The utility model discloses a rotatory multi -turn potentiometer of no backstop, including casing (2) and locate resistance card (10) of its internal fixation, still be fixed with conductive copper sheet (9) and reciprocal lead screw (1) parallel with resistance card (10) in casing (2), one, three (3, 5) of pin are connected at the upper and lower both ends of resistance card (10), pin two (7) is connected in conductive copper sheet (9), swing joint has double -end brush device in the helicla flute of reciprocal lead screw (1), and brush silk (12) difference contact resistance piece (10) and conductive copper sheet (9) at its two form the movable contact to rotatory its reciprocating axially that follows along with reciprocal lead screw (1). Not only realized the electric stroke of the many circles of potentiometre, mechanical stroke does not have backstop, but still endless loop is rotated.
Description
Technical field
The utility model relates to a kind of without backstop multi-turn rotation potentiometer, is particularly useful for engineering mechanical device field.
Background technology
Rotational potentiometer is a kind of electromechanical compo, rely on the slip of brush on resistive element, obtain the output voltage becoming certain relation with brush shift, be mainly used in the fields such as communication product, intercom, vehicle power amplifier, multi-media sound system, Smart Home, household electrical appliance, computer periphery, major function is volume adjusting, light intensity adjustment, menu setecting, speed adjustment, temperature adjustment etc.
At present, the rotational potentiometer that plant equipment uses is mostly single-turn potentiometer and the multiturn potentiometer having backstop, wherein: the travelling arm of single-turn potentiometer rotating less than in the planning of 360 °, can only be commonly used to volume and controlling; The rotating shaft of multiturn potentiometer is often turned around, and a very little segment distance is only moved in travelling arm contact on resistive element, and when its travelling arm is from a limit orientation to another limit orientation, rotating shaft needs to change multi-turn, is commonly used in precise regulation circuit.
But above-mentioned both exist certain technological deficiency: wherein, although single-turn potentiometer mechanical trip is unlimited, electrically, there is larger restriction in stroke 360 ° only at most in application scenario; And multiturn potentiometer many employings resistance wire winding structure, although rotary course starts and at the end of be provided with mechanical stop, just because of mechanical stop restriction, it is excessive that potentiometer shaft bears torque, easily makes potentiometer damage, the increase cost of production maintenance and manpower.
So urgently develop a kind of Novel rotary potentiometer being different from current single-turn potentiometer and multiturn potentiometer.
Summary of the invention
For above-mentioned existing technical problem, the utility model provides a kind of without backstop multi-turn rotation potentiometer, and to reach mechanical trip without backstop, and electrically stroke can reach 360 ° of the above object.
For achieving the above object, the utility model provides a kind of without backstop multi-turn rotation potentiometer, comprises housing and is located at the resistor disc of its internal fixtion, be also fixed with the conductive copper sheet parallel with resistor disc and reciprocating screw rod in housing.The two ends up and down of described resistor disc connect pin one, three, and described conductive copper sheet connects pin two, forms three exits, can carry out wiring according to situation.
Focus on, double end brushgear is connected with in the helicla flute of reciprocating screw rod, due to a kind of form that reciprocating screw rod is solid cam pair, its performance is two thread grooves that pitch is identical, rotation direction is contrary, two ends transition curve connects, therefore by the rotation of reciprocating screw rod, helicla flute side can be made to promote the double end brushgear be placed in helicla flute and to make axially reciprocating, and there is no mechanical position limitation.And, contact resistance sheet and conductive copper sheet form moving contact to the brush silk at double end brushgear two respectively, and along with the rotation of reciprocating screw rod is along its axially reciprocating, pin one and pin two or the resistance between pin two and pin three then can circulate proportional increase or minimizing thus, form variable resistor.
Further, described double end brushgear comprises flexible connection reciprocating screw rod spiral fluted guide sleeve device, connects the brush silk at guide sleeve device two ends, and connects the conductive copper wire of two brush silks.Further, described guide sleeve device comprises and is sleeved on guide pin bushing on reciprocating screw rod and guide pin bushing guide finger, and the head movement of this guide pin bushing guide finger assigns in reciprocating screw rod helicla flute, and afterbody is fixedly connected with guide pin bushing.So, when rotating reciprocating screw rod, guide pin bushing guide finger is just by along the relative motion of reciprocating screw rod helicla flute, thus drive guide pin bushing and brush silk do the axially reciprocating along reciprocating screw rod.
Further, be the position of fixed resistance sheet and conductive copper sheet, described inner walls both sides are provided with perpendicular grooves, are respectively used to fixed resistance sheet and conductive copper sheet.Further, for ensureing brush silk and contact good all the time between resistor disc and conductive copper sheet, described guide pin bushing two ends being assigned in housing two groove respectively, plays the effect of fixed position.
Further, also comprise guide pin bushing guide finger, its head inserts in the helicla flute of reciprocating screw rod, and can along the helicla flute relative motion of reciprocating screw rod, and its afterbody is fixedly connected with guide pin bushing simultaneously.
Concrete, the bottom of described reciprocating screw rod and middle part coordinate respectively by the upper and lower two ends of bearing and housing, thus fix the relative position of reciprocating screw rod and housing.
Preferably, described resistor disc is strip conductive plastic resistance sheet, resistor disc is formed through plastic compression by the powder of molding powder and electric conducting material, compare other materials, there is the advantages such as Standard resistance range is wide, linear precision is high, resolving power is strong, friction durability is long, therefore still can work reliably under the rugged environments such as vibration, impact.
In sum, the utility model adopts reciprocating screw rod structure, not only achieve mechanical trip without backstop, can also Infinite Cyclic rotate, achieve the electric stroke of potentiometer multi-turn, and electrically stroke can reach arbitrarily angled according to the different length of reciprocating screw rod and pitch, structure is not fragile, save maintenance cost, be applicable to the occasion needing accurate adjustment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to structural representation;
Fig. 3 is the internal structure schematic diagram removing housing in Fig. 2;
Fig. 4 be in Fig. 1 B-B to structural representation;
Fig. 5 is the structure for amplifying schematic diagram at I place in Fig. 3;
In figure: 1, reciprocating screw rod, 2, housing, 3, pin one, 4, guide pin bushing, 5, pin three, 6, bearing, 7, pin two, 8, guide pin bushing guide finger, 9, conductive copper sheet, 10, resistor disc, 11, conductive copper wire, 12, brush silk.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As Figure 1-Figure 5, the utility model comprises housing 2, reciprocating screw rod 1, bearing 6, guide pin bushing 4, guide pin bushing guide finger 8, strip conductive plastic resistance sheet 10, conductive copper sheet 9, conductive copper wire 11, brush silk 12, pin 1, pin 27 and pin 35.
As shown in Figure 4, fixing for convenience of installing, housing 2 inwall both sides are respectively equipped with perpendicular grooves.
As shown in Figure 3, strip conductive plastic resistance sheet 10 and conductive copper sheet 9 are pasted onto in housing 2 grooves on two sides respectively, housing 2 is caused outside at the soldering copper post of two ends up and down of strip conductive plastic resistance sheet 10, as pin 1 and pin 35, it is outside that conductive copper sheet 9 then causes housing 2 by a copper post, as pin 27.
As shown in Figures 2 and 3, also assigned a reciprocating screw rod 1 in housing 2, as the rotating shaft of this potentiometer, the bottom of reciprocating screw rod 1 and middle part coordinate with housing about 2 two ends respectively by bearing 6, the position of fixed potential device axle thus.
As shown in Figures 2 and 3, the center of guide pin bushing 4 is on reciprocating screw rod 1, and guide pin bushing 4 two ends are assigned in the groove of housing 2 both sides.As shown in Figure 3 and Figure 5, guide pin bushing 4 two ends are respectively with brush silk 12, and two ends brush silk 12 is connected by the conductive copper wire 11 be centered around on guide pin bushing 4.Further, guide pin bushing 4 two ends brush silk 12 contacts with conductive copper sheet 9 with the strip conductive plastic resistance sheet 10 in grooves on two sides in housing 2 respectively, forms two moving contacts.
As shown in Figure 4, the head movement of guide pin bushing guide finger 8 assigns in reciprocating screw rod 1 helicla flute, afterbody is fixedly connected with guide pin bushing 4, by the slip of head in reciprocating screw rod 1 helicla flute of guide pin bushing guide finger 8, makes guide pin bushing 4 can along with the rotation of reciprocating screw rod 1 is along its axially reciprocating.Therefore, guide pin bushing 4 with brush silk 12 along reciprocating screw rod 1 axially reciprocating time, two moving contacts on resistor disc 10 and conductive copper sheet 9 are also in motion, but the resistance value between pin 1 and pin 37 is constant all the time, and pin 1 and pin 27 or the resistance value between pin 27 and pin 35 to circulate proportional variation along with the rotational angle of reciprocating screw rod 1, thus realize the adjustment of resistance value.
During enforcement, because what adopt is reciprocating screw rod structure, this potentiometer shaft can infinite rotational, guide pin bushing 4 can move back and forth on reciprocating screw rod 1, there is no mechanical position limitation, pin 1 and pin 27 or the resistance between pin 27 and pin 35 can circulate proportional increase or minimizing, and the electric stroke of potentiometer also can reach arbitrarily angled according to the different length of reciprocating screw rod 1 and pitch.
Claims (7)
1., without a backstop multi-turn rotation potentiometer, comprise housing (2) and be located at the resistor disc (10) of its internal fixtion, it is characterized in that, in housing (2), be also fixed with the conductive copper sheet (9) parallel with resistor disc (10) and reciprocating screw rod (1);
The two ends up and down of described resistor disc (10) connect pin one, three (3,5);
Described conductive copper sheet (9) connects pin two (7);
Double end brushgear is connected with, brush silk (12) contact resistance sheet (10) and conductive copper sheet (9) the formation moving contact respectively at its two in the helicla flute of described reciprocating screw rod (1), and along with the rotation of reciprocating screw rod (1) is along its axially reciprocating.
2. according to claim 1 a kind of without backstop multi-turn rotation potentiometer, it is characterized in that, described double end brushgear comprises flexible connection reciprocating screw rod (1) spiral fluted guide sleeve device, connect the brush silk (12) at guide sleeve device two ends, and connect the conductive copper wire (11) of two brush silks (12).
3. according to claim 2 a kind of without backstop multi-turn rotation potentiometer, it is characterized in that, described guide sleeve device comprises and is sleeved on guide pin bushing (4) on reciprocating screw rod (1) and guide pin bushing guide finger (8), the head movement of this guide pin bushing guide finger (8) assigns in reciprocating screw rod (1) helicla flute, and afterbody is fixedly connected with guide pin bushing (4).
4. according to claim 1 and 2 a kind of without backstop multi-turn rotation potentiometer, it is characterized in that, described housing (2) inwall both sides are provided with perpendicular grooves, are respectively used to fixed resistance sheet (10) and conductive copper sheet.
5. according to claim 3 a kind of without backstop multi-turn rotation potentiometer, it is characterized in that, described guide pin bushing (4) two ends are assigned in housing (2) two groove respectively.
6. one according to claim 1 and 2 is without backstop multi-turn rotation potentiometer, it is characterized in that, the bottom of described reciprocating screw rod (1) and middle part coordinate at two ends up and down respectively by bearing (6) and housing (2).
7. according to claim 1 and 2 a kind of without backstop multi-turn rotation potentiometer, it is characterized in that, described resistor disc (10) is strip conductive plastic resistance sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693295.5U CN205080953U (en) | 2015-09-09 | 2015-09-09 | Rotatory multi -turn potentiometer of no backstop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693295.5U CN205080953U (en) | 2015-09-09 | 2015-09-09 | Rotatory multi -turn potentiometer of no backstop |
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| Publication Number | Publication Date |
|---|---|
| CN205080953U true CN205080953U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520693295.5U Active CN205080953U (en) | 2015-09-09 | 2015-09-09 | Rotatory multi -turn potentiometer of no backstop |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107836425A (en) * | 2017-10-23 | 2018-03-27 | 宋谨旭 | A kind of dual-purpose killing device of mosquito |
| CN111128498A (en) * | 2020-01-06 | 2020-05-08 | 中国农业大学 | High-precision resistance adjusting device and adjusting method |
| CN116735930A (en) * | 2023-08-15 | 2023-09-12 | 江苏华鹏智能仪表科技股份有限公司 | Concentrator appurtenance |
| CN117600904A (en) * | 2024-01-24 | 2024-02-27 | 内蒙古工业大学 | Milling machine heat radiation structure |
-
2015
- 2015-09-09 CN CN201520693295.5U patent/CN205080953U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107836425A (en) * | 2017-10-23 | 2018-03-27 | 宋谨旭 | A kind of dual-purpose killing device of mosquito |
| CN111128498A (en) * | 2020-01-06 | 2020-05-08 | 中国农业大学 | High-precision resistance adjusting device and adjusting method |
| CN116735930A (en) * | 2023-08-15 | 2023-09-12 | 江苏华鹏智能仪表科技股份有限公司 | Concentrator appurtenance |
| CN116735930B (en) * | 2023-08-15 | 2023-10-24 | 江苏华鹏智能仪表科技股份有限公司 | Concentrator appurtenance |
| CN117600904A (en) * | 2024-01-24 | 2024-02-27 | 内蒙古工业大学 | Milling machine heat radiation structure |
| CN117600904B (en) * | 2024-01-24 | 2024-04-05 | 内蒙古工业大学 | Milling machine heat radiation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 11 Baolian Temple Road, Xuzhou Economic Development Zone, Jiangsu Province, 221000 Patentee after: Xuzhou Weika Electronic Control Technology Co., Ltd. Address before: No. 11 Baolian Temple Road, Xuzhou Economic Development Zone, Jiangsu Province, 221000 Patentee before: Xuzhou Hirschmann Electronic Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |