GB2247991A - Traction for motor driven slide type variable resistor unit using toothed endless belt - Google Patents
Traction for motor driven slide type variable resistor unit using toothed endless belt Download PDFInfo
- Publication number
- GB2247991A GB2247991A GB9119203A GB9119203A GB2247991A GB 2247991 A GB2247991 A GB 2247991A GB 9119203 A GB9119203 A GB 9119203A GB 9119203 A GB9119203 A GB 9119203A GB 2247991 A GB2247991 A GB 2247991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- sliding element
- resistor unit
- frame body
- element holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 10
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/14—Adjustable resistors adjustable by auxiliary driving means
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
A motor-driven slide-type variable resistor unit comprising a resistor unit body, which is divided into a first frame body (20) for installing parts of the resistor unit and a second frame body (26) for installing parts of a driving mechanism, the first frame body being provided with a resistor base plate (22) forming a resistor body (21) and a sliding element holder (24) for fixing a sliding element on the resistor base plate, the second frame body being provided with a motor (27), a plurality of pulleys (30, 31, 32) and an endless traction member (33) with gear teeth (34) being formed in a concavo-convex configuration in a manner such that the traction member is wound around a gear fixed on a driving shaft (28) of the motor and each of said pulleys, and further, the gear teeth of the endless traction member are meshed with the gear fixed on the driving shaft of the motor and also meshed with opposite gear teeth (27) being formed in a concavo-convex configuration on the sliding element holder. <IMAGE>
Description
MOTOR-DRIVEN SLIDE-TYPE VARIABLE RESISTOR UNIT
This invention relates to a motor-driven slidetype variable resistor unit which can be operated not only by motor but also by manual operation.
Figure 6 is a schematic diagram for illustrating an operation of a previously proposed motor-driven slidetype variable resistor. Numeral 1 denotes a motor, and numerals 2, 3, 4 and 5 denote pulleys which are supported for rotation. The motor 1 has a driving shaft 6, and a pulley 7 is fixed on the driving shaft 6. Numeral 8 denotes a traction member such as a wire 8 which is wound by a plurality of turns around the pulley 7 and is further wound around the pulleys 2, 3, 4 and 5. Both ends of the wire 8 are bound or secured to projections 9a, 9a formed of a sliding element holder 9. Then, the ends of the wire 8 are secured to the projections by means of adhesive bonding material for example.
Rotation of the motor 1, or manual operation of knob 10, which is provided on the sliding element holder 9, causes a sliding element (not shown) installed in the sliding element holder 9 to slide on a resistor body (not shown) so as to vary a resistance value.
In such a conventional structure, however, the connecting structure for the wire 8 and the sliding element holder 9 requires means for fixing the ends of the wire 8 to the sliding element holder 9, since the wire 8 is not endless. Therefore, installation efficiency is not good, and connecting stability cannot be established through such a conventional connecting structure. Moreover, the transmission mechanism for transmitting rotational force from the motor 1 to the sliding element holder 9 requires appropriate frictional force to be provided between the pulley 7 and the wire 8, rendering it necessary to wind the wire 8 around the pulley 7 by a plurality of turns.Moreover, a problem arose in that the transmission of the rotational force from the motor 1 to the wire 8 could not be kept stable because it was carried out in dependence upon the frictional force between the pulley 7 and the wire 8.
The present invention arose in an attempt to resolve such problems, and to provide a motor-driven slide-type variable resistor unit wherein the connecting structure of a traction member and a sliding element holder can be easily installed with better work efficiency compared with the conventional structure; in which the connection of the traction member and the sliding element is stabilized, the transmission of the rotational force from the motor to the sliding element holder is stabilized, and the installation work efficiency of the transmission mechanism is improved.
According to the present invention there is provided a motor-driven slide-type variable resistor unit comprising a resistor unit body, said resistor unit being divided into a first frame body for installing parts of the resistor unit and a second frame body for installing parts of a driving mechanism, said first frame body being provided with a resistor base plate forming a resistor body and a sliding element holder for fixing a sliding element sliding on the resistor base plate, said second frame body being provided with a motor, a plurality of pulleys and an endless traction member with gear teeth being formed in a concavo-convex configuration in a manner such that the endless traction member is wound around a gear fixed on a driving shaft of said motor and each of said pulleys and further the gear teeth of the endless traction member are meshed with the gear fixed on the driving shaft of said motor and also meshed with opposite gear teeth being formed in a concavo-convex configuration on the sliding element holder.
Since the connecting structure of the traction member and the sliding element holder is accomplished by providing an endless traction member, which is wound around pulleys, with gear teeth being formed in a concavo-convex configuration so that the gear teeth can mesh with opposite gear teeth being formed in a concavoconvex configuration on the sliding element holder, it becomes possible to omit the heretofore essential connection means for connecting ends of the traction member and the sliding element holder by means of adhesive bonding material, thereby improving installation work efficiency and providing a stabilized connecting structure for the traction member and the sliding element holder.
Moreover, the transmission of rotational force from the motor to the sliding element holder is accomplished by providing the traction member with gear teeth formed in concavo-convex configuration on its one side so that the gear teeth can mesh with the gear fixed on the motor. Therefore, the stability of the transmission of rotation force increases compared with the conventional method in which the transmission depends on the frictional force between the traction member and the pulley. Furthermore, the transmission mechanism does not require the traction member to be wound around the pulley by a plurality of turns, thus improving the installation work efficiency.
Thus, the present invention can avoid or reduce the aforementioned problems and disadvantages encountered in previously proposed resistors and is capable of improving installation work efficiency and of providing a stabilized connecting structure for the traction member and the sliding element holder and further providing a stabilized transmission mechanism for transmitting rotational force from the motor to the sliding element holder.
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is an exploded perspective view showing a driving structure of a motor-driven slide-type variable resistor unit;
Figure 2 is a plane view;
Figure 3 is a perspective view showing part of a sliding element holder;
Figure 4 is a schematic diagram for illustrating operation of the variable resistor unit in accordance with the present invention;
Figure 5 is an enlarged cross-sectional view showing a portion A of Figure 4; and
Figure 6 is a schematic diagram for illustrating operation of a previously proposed motor-driven slidetype variable resistor unit.
Figures 1 to 4 are views illustrating an embodiment of the present invention.
In Figure 1, numeral 20 denotes a first frame body, having a bottom surface in which is installed a resistor base plate 22 forming resistor body 21. The first frame body 20 has side plates 23, 23 mounting two guide rods 25, 25 for guiding a sliding element holder 24. The sliding element holder 24 moves in right-andleft directions guided by the two guide rods 25, 25 so that a sliding element (not shown) installed in the sliding element holder 24 can slide on the resistor body 21 provided on the resistor base plate 22.
Numeral 26 denotes a second frame body having a bottom surface on which a first pulley 30, a second pulley 31, and a third pulley 32 are rotatably provided.
Numeral 33 denotes a traction member with gear teeth 34 formed in a concavo-convex configuration on its one side; ie an endless belt, which belt 33 is wound in a manner such that, after winding around the first pulley 30, one surface of the belt 33 surrounds the third pulley 32 and a gear 29 of the motor 27, and meshes with the geared teeth 34, the belt then extends in parallel with the resistor body 21 after surrounding the second pulley 31, and returns to an opposite end of the first pulley 30.
The first frame body 20 and the second frame body 26 are coupled with each other as shown in Figure 2, and a knob 38 protrudes outward from groove 39 which is formed between the first frame body 20 and the second frame body 26. The second frame body 26 has a hole 35 through which a screwdriver, for example, can be inserted to push the belt 33 toward the first frame body 20 so that the gear teeth 34 formed on the belt 33 can be inserted in a groove 36 provided on the side surface of the sliding element holder 24 and meshed with gear teeth 37 which are formed in a concavo-convex configuration on one surface of the groove 36, as shown in Figure 5.
Operation of the variable resistor unit is explained below referring to Figure 4.
Firstly, during manual operation, by shifting the knob 38, which is integrally formed with the sliding element holder 24, in the direction of arrow B, the sliding element holder 24 shifts together with the knob 38, and, as a result, the sliding element (not shown) shifts on the resistor body 21 shown in Figure 1 so as to vary resistance value. At the same time, in accordance with this shift movement of the sliding element holder 24, the belt 33 shifts toward the direction B, thus, the first pulley 30, the third pulley 32 and the gear 29 of the motor 27 are rotated in a clockwise direction.
During motor-driven operation, when a motor 27 is supplied electric power and rotates a driving shaft 28 in a clockwise direction; ie direction C in Figure 4, the belt 33 rotates in direction B together with the gear 29, the second pulley 31, the first pulley 30, and the third pulley 32. Therefore, the sliding element holder 24 shifts towards direction B and the resistance value varies.
In the same way, when the driving shaft 28 of the motor 27 rotates in a counter-clockwise direction; ie anti-direction C, the belt 33 shifts toward the antidirection B, thus, the sliding element holder 24 shifts in the same direction together with the belt 33, and therefore, the resistance value is varied.
In accordance with the above embodiment of the present invention, since the connecting structure for the belt 33 and the sliding element holder 24 is accomplished by providing an endless belt 33, which is wound around the first pulley 30, the second pulley 31, the third pulley 32 and the gear 29 fixed on the rotational driving shaft 28 of the motor 27, with gear teeth 34 being formed in a concavo-convex configuration so that the gear teeth 34 can mesh with opposite gear teeth 37 being formed in a concavo-convex configuration on the sliding element holder 24, the necessary connection means for connecting ends of the belt and the sliding element holder in the prior art can be omitted, thereby improving installation work efficiency and providing the stabilized connecting structure for the belt and the sliding element holder.
Furthermore, the transmission of rotational force from the motor 27 to the sliding element holder 24 is accomplished by providing the belt 33 with the gear teeth 34 formed in the concavo-convex configuration on its one side so that the gear teeth 34 can mesh with the gear 29 fixed on the driving shaft 28 of the motor 27.
Therefore, the stability of the transmission of rotational force increases compared with the conventional method in which the transmission is carried out by depending on the friction force between the wire and the pulley fixed on the driving shaft of the motor, and further, the transmission mechanism does not require an installation step of winding the wire around the pulley by a plurality of turns, thus the installation work efficiency is improved.
Although the first pulley 30, the second pulley 31, and the third pulley 32 are rotatably supported on the second frame body 26, their bearing members are applied tensions by means of grease. Accordingly, the belt 33 can be prevented from loosening by utilizing the inherent viscosity of the grease.
In embodiments of the present invention, the connecting structure for the traction member and the sliding element holder is improved in installation work efficiency compared with the conventional method and the connecting structure is stabilized compared with the conventional one.
Moreover, the transmission mechanism of rotational force from the motor of the sliding element holder is stabilized compared with the conventional mechanism, and the installation work efficiency is increased.
As this invention may be embodied in several forms without departing from the spirit of essential characteristics thereof, the present embodiment is therefore illustrative and not restrictive, since the scope of the invention is defined by the appending claims rather than by the description proceeding them, and all changes that fall within meets and bounds of the claims, or equivalence of such meets and bounds are therefore intended to be embraced by the claims.
Claims (4)
1. A motor-driven slide-type variable resistor unit comprising; a resistor unit body, said resistor unit being divided into a first frame body for installing parts of the resistor unit and a second frame body for installing parts of a driving mechanism, said first frame body being provided with a resistor base place forming a resistor body and a sliding element holder for fixing a sliding element sliding on the resistor base plate, said second frame body being provided with a motor, a plurality of pulleys and an endless traction member with gear teeth formed in a concavo-convex configuration in a manner such that the endless traction member is wound around a gear fixed on a driving shaft of said motor and each of said pulleys, and wherein the gear teeth of the endless traction member are meshed with the gear fixed on the driving shaft of said motor and also meshed with gear teeth formed in a concavo-convex configuration on the sliding element holder.
2. A motor-driven slide-type variable resistor unit in accordance with Claim 1, in which said teeth formed in a concavo-convex configuration on the sliding holder, which meshes with the gear teeth formed in concavo-convex configuration on the endless traction member, are formed on one side of a groove provided on the side sur Q the sliding element holder.
3. A motor-driven slide-type variable resistor unit in accordance with Claim 1 or Claim 2; further comprising a pair of guide rods for guiding said sliding element holder which is mounted between opposite side plates of the first frame body.
4. A motor-driven slide-type variable resistor unit substantially as hereinbefore described, with reference to, and as illustrated by, Figures 1 to 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9474890U JPH0754966Y2 (en) | 1990-09-11 | 1990-09-11 | Motor driven slide type variable resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9119203D0 GB9119203D0 (en) | 1991-10-23 |
| GB2247991A true GB2247991A (en) | 1992-03-18 |
Family
ID=14118749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9119203A Withdrawn GB2247991A (en) | 1990-09-11 | 1991-09-09 | Traction for motor driven slide type variable resistor unit using toothed endless belt |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0754966Y2 (en) |
| GB (1) | GB2247991A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255677A (en) * | 1991-05-01 | 1992-11-11 | Alps Electric Co Ltd | Mounting of motor in motor-driven slide potentiometer |
| GB2284714A (en) * | 1991-05-01 | 1995-06-14 | Alps Electric Co Ltd | Motor-driven slide potentiometer |
| GB2292014A (en) * | 1994-07-28 | 1996-02-07 | Heidelberger Druckmasch Ag | Motor driven potentiometer for analog signal controller |
| GB2298317A (en) * | 1995-02-24 | 1996-08-28 | Alps Electric Co Ltd | Motor/manually driven sliding variable resistor |
| GB2308507A (en) * | 1995-02-24 | 1997-06-25 | Alps Electric Co Ltd | Motor/manually driven sliding variable resistor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015201578A (en) * | 2014-04-09 | 2015-11-12 | アルプス電気株式会社 | Motor-driven sliding variable resistor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364493A (en) * | 1970-11-30 | 1974-08-21 | Preh Gmbh Walter | Variable electrical components |
| WO1989009135A1 (en) * | 1988-04-01 | 1989-10-05 | Ncr Corporation | Toothed belt carriage drive for a printing apparatus |
-
1990
- 1990-09-11 JP JP9474890U patent/JPH0754966Y2/en not_active Expired - Lifetime
-
1991
- 1991-09-09 GB GB9119203A patent/GB2247991A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364493A (en) * | 1970-11-30 | 1974-08-21 | Preh Gmbh Walter | Variable electrical components |
| WO1989009135A1 (en) * | 1988-04-01 | 1989-10-05 | Ncr Corporation | Toothed belt carriage drive for a printing apparatus |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255677A (en) * | 1991-05-01 | 1992-11-11 | Alps Electric Co Ltd | Mounting of motor in motor-driven slide potentiometer |
| GB2284714A (en) * | 1991-05-01 | 1995-06-14 | Alps Electric Co Ltd | Motor-driven slide potentiometer |
| GB2255677B (en) * | 1991-05-01 | 1995-07-19 | Alps Electric Co Ltd | Motor-driven slide potentiometer |
| GB2284714B (en) * | 1991-05-01 | 1995-08-16 | Alps Electric Co Ltd | Motor-driven slide potentiometer |
| GB2292014A (en) * | 1994-07-28 | 1996-02-07 | Heidelberger Druckmasch Ag | Motor driven potentiometer for analog signal controller |
| GB2298317A (en) * | 1995-02-24 | 1996-08-28 | Alps Electric Co Ltd | Motor/manually driven sliding variable resistor |
| GB2308507A (en) * | 1995-02-24 | 1997-06-25 | Alps Electric Co Ltd | Motor/manually driven sliding variable resistor |
| GB2308507B (en) * | 1995-02-24 | 1997-12-17 | Alps Electric Co Ltd | Sliding variable resistor |
| GB2298317B (en) * | 1995-02-24 | 1997-12-17 | Alps Electric Co Ltd | Sliding variable resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452705U (en) | 1992-05-06 |
| JPH0754966Y2 (en) | 1995-12-18 |
| GB9119203D0 (en) | 1991-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1781450B1 (en) | Actuator | |
| CN109757115B (en) | Driving device for sliding door | |
| EP0076268B1 (en) | Automatic manipulator | |
| US5180348A (en) | Resistance mechanism | |
| CN114010050B (en) | Telescopic guide rail of electric curtain | |
| JPH0212285B2 (en) | ||
| GB2247991A (en) | Traction for motor driven slide type variable resistor unit using toothed endless belt | |
| GB2284944A (en) | Adjustable eddy current retarder for sporting equipment | |
| US5982127A (en) | Spring device for balancing vertical movements of multi-joint robot | |
| US6631014B1 (en) | Image reading apparatus | |
| DE29805119U1 (en) | Drive mechanism for flatbed scanners | |
| US5033995A (en) | Motion transforming device, and in particular a speed reduction gear | |
| JP3240147B2 (en) | Belt drive differential | |
| US5067423A (en) | Sewing machine drive assembly, including pulley belt traction enhancement device | |
| US5075719A (en) | Lens driving device | |
| EP0187428A1 (en) | Mechanism for generating reciprocal rotary motion | |
| KR200147354Y1 (en) | Parallel transmission power train | |
| JP3273457B2 (en) | Motor driven slide type variable resistor | |
| GB2308506A (en) | Motor/manually driven sliding variable resistor | |
| JP3273422B2 (en) | Motor driven slide type variable resistor | |
| US3266047A (en) | Belt drive assembly for facsimile recorder | |
| KR910000680Y1 (en) | Drive of answering machine | |
| JPH084412A (en) | Joint member for window regulator | |
| RU2029177C1 (en) | Variator with flexible link | |
| RU1775072C (en) | Drive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |