CN210687171U - Potentiometer support of electric actuating mechanism - Google Patents
Potentiometer support of electric actuating mechanism Download PDFInfo
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- CN210687171U CN210687171U CN201920835690.0U CN201920835690U CN210687171U CN 210687171 U CN210687171 U CN 210687171U CN 201920835690 U CN201920835690 U CN 201920835690U CN 210687171 U CN210687171 U CN 210687171U
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- potentiometer
- signal
- gear
- transmission shaft
- potentiometer support
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Abstract
The utility model discloses a potentiometer support of an electric actuating mechanism, wherein, the outer part of the side part of the potentiometer support horizontally extends to a side platform to fix a potentiometer; the transmission shaft is rotatably matched in the upper transmission shaft mounting cavity of the potentiometer support, and the signal rod connected with the transmission shaft into a whole extends upwards to be rotatably matched in the signal rod mounting cavity of the potentiometer support and extends out of the potentiometer support so as to be provided with a signal gear transmission set; the left signal gear of the signal gear transmission group is formed by superposing and assembling an upper left signal gear and a lower left signal gear which have the same specification and are staggered in gear teeth on a signal rod, and the right signal gear is meshed with the upper left signal gear and the lower left signal gear simultaneously. The potentiometer is fixedly arranged on the side platform, and the right signal gear is rotationally connected with the potentiometer. This potentiometre supporting structure commonality is good, promotes the packaging efficiency, reduces the dismouting degree of difficulty of product when changing after sale, has solved the product simultaneously and has become flexible scheduling problem in the transportation.
Description
Technical Field
The utility model belongs to the technical field of electric actuator, concretely relates to potentiometer support's for electric actuator improvement structure.
Background
The electric actuator adopts a potentiometer to accurately control the starting and stopping positions of the equipment. However, the conventional potentiometer has various mounting methods. Moreover, worm wheel boxes of electric actuators of different types are different in size, so that the electric actuators of different types are required to be provided with potentiometer supports independently. Therefore, the existing design designs a plurality of models of cantilever type potentiometer supports aiming at the worm gear box body structure of each electric actuating mechanism. As shown in fig. 4, the conventional cantilever-type potentiometer support is mounted by a worm gear case, and a signal rod is positioned, so that the two mounting holes 1 and 2 of the cantilever-type potentiometer support are not coaxial, and the problem that the distance between the mounting hole and the signal rod is not consistent and the same accessory cannot be shared due to different sizes of worm gear cases of different models is also caused. And moreover, the cantilever type potentiometer support is provided with a screw hole 3 for mounting a single screw, and the single screw is mounted under the vibration working condition and is easy to loosen. And when after-sale replacement, the set screw of the flexible coupling is difficult to remove. The existing cantilever type potentiometer support is difficult to process, the needed types of moulds are multiple, and certain difficulty is caused to the whole machine production and accessory storage.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides an electric actuator's potentiometer support. This potentiometre supporting structure commonality is good, promotes the packaging efficiency, reduces the dismouting degree of difficulty of product when changing after sale, has solved the product simultaneously and has become flexible scheduling problem in the transportation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a potentiometer support of an electric actuating mechanism comprises a worm gear box body, a transmission shaft, a signal rod, a potentiometer and a potentiometer support fixedly arranged on the worm gear box body, wherein the transmission shaft and the signal rod are integrally and rotatably connected and penetrate through the potentiometer support and the worm gear box body; the middle part of the potentiometer support forms a signal rod mounting cavity and an upper transmission shaft mounting cavity which are communicated; a side platform horizontally extends outside the side part; the transmission shaft is rotatably matched in the upper transmission shaft mounting cavity, and the signal rod which is connected with the transmission shaft into a whole extends upwards and is rotatably matched in the signal rod mounting cavity and extends out of the potentiometer support; the part of the signal rod extending out of the potentiometer support is provided with a signal gear transmission set;
the signal gear transmission group comprises a left signal gear and a right signal gear, wherein the left signal gear is formed by overlapping and assembling an upper left signal gear and a lower left signal gear which have the same specification on a signal rod, gear teeth of the upper left signal gear and the lower left signal gear in the overlapped state are arranged in a staggered mode, and the right signal gear is meshed with the upper left signal gear and the lower left signal gear simultaneously.
The potentiometer is fixedly arranged on the side platform, and the right signal gear is rotationally connected with the potentiometer.
According to the potentiometer support of the electric actuating mechanism, the matching tolerance of the signal rod and the signal rod mounting cavity is 0.02-0.04mm, and the matching tolerance of the transmission shaft and the transmission shaft mounting cavity is 0.02-0.04 mm.
According to the potentiometer support of the electric actuating mechanism, the side platform of the potentiometer support is provided with the positioning hole which is formed by precision die-casting, and the potentiometer is installed and fixed in the positioning hole.
In the potentiometer support of the electric actuator, the upper end and the lower end of the signal rod are respectively and correspondingly connected with the transmission shaft of the potentiometer support through screws.
Compared with the prior art, the utility model provides a technical scheme has following beneficial effect:
firstly, a flexible coupling in the prior art is eliminated, so that a potentiometer can be directly connected with a signal gear set, a plurality of inconveniences of mounting the flexible coupling on after-sales are simplified, the processing is simple, and the price is low;
secondly, the potentiometer is arranged on a side platform of the potentiometer support, so that the potentiometer can be used with all series of electric actuating mechanisms. The worm gear box body installation position that does not receive each model differs, and the space of stepping down varies, and accessory model is different etc. restriction.
Thirdly, the signal rod and the transmission shaft are coaxially and vertically arranged, and the signal rod, the transmission shaft and the potentiometer mounting bracket are in precise rotating fit, so that eccentric force in transmission is eliminated, the rotating angle of the transmission shaft can be completely and accurately fed back through the potentiometer, and the service life of the potentiometer is prolonged.
Fourthly, the signal rod is provided with a plurality of screws for positioning and installation, and the defect of instable installation in the prior art is eliminated.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic sectional view of the potentiometer support of the present invention;
fig. 2 is a schematic top view of the potentiometer support of the present invention;
fig. 3 is a schematic structural view of the potentiometer support in use;
fig. 4 is a schematic perspective view of a cantilever-type potentiometer support according to the prior art.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.
In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.
In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.
In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.
The potentiometer support of the electric actuator of the present invention will now be described with reference to fig. 1 to 3. The electric actuating mechanism comprises a worm gear box body 10, a transmission shaft 20, a signal rod 30 and a potentiometer 40, wherein the transmission shaft 20 and the signal rod 30 are coaxially and fixedly connected to form an integrally rotating transmission rod mechanism, so that the fact that the transmission shaft 20 and the signal rod 30 are jointly transmitted is guaranteed. The potentiometer support 50 of the electric actuating mechanism is fixedly arranged on the worm gear box body 10 through screws, and a transmission rod mechanism consisting of a transmission shaft 20 and a signal rod 30 is rotatably arranged in the potentiometer support 50 and the worm gear box body 10 in a penetrating way.
Specifically, a signal rod mounting cavity 51 and an upper transmission shaft mounting cavity 52 which are communicated with each other are formed in the middle of the potentiometer support 50; a lower transmission shaft mounting cavity 11 is formed on the worm gear case 10, the lower transmission shaft mounting cavity 11 is communicated with the upper transmission shaft mounting cavity 52, the diameter of the upper transmission shaft mounting cavity 52 is smaller than that of the lower transmission shaft mounting cavity 11, so that the stepped end of the stepped transmission shaft 20 is correspondingly and rotatably matched with the upper transmission shaft mounting cavity 52 and the lower transmission shaft mounting cavity 11, and in the upper transmission shaft mounting cavity 52, the lower end of the signal rod 30 is fixedly connected with the transmission shaft 20 into a whole through a first screw 70. The signal rod 30 integrally connected to the transmission shaft 20 is extended upward and rotatably fitted in the signal rod mounting cavity 51 and extended out of the potentiometer support 50. The portion of the signal rod 30 extending out of the potentiometer support 50 is provided with a signal gear assembly 60. The fit tolerance of the signal rod 30 and the signal rod mounting cavity 51 is 0.02-0.04mm, and the fit tolerance of the transmission shaft 20 and the transmission shaft mounting cavity 52 is 0.02-0.04mm, so that the concentricity and the verticality of the fit of the transmission shaft 20, the signal rod 30 and the potentiometer support 50 are ensured.
The signal gear transmission set 60 comprises a left signal gear and a right signal gear, the diameter of the left signal gear is larger than that of the right signal gear, and the left signal gear is formed by overlapping two identical gears to form a superimposed gear pair; the right signal gear 63 is a single gear, and the right signal gear 63 engages the left signal gear. Specifically, the left signal gear is formed by superposing and assembling an upper left signal gear 61 and a lower left signal gear 62 which have the same specification on the signal rod 30, and specifically, the lower left signal gear 62 is screwed on the upper end portion of the signal rod 30 extending out of the potentiometer support 50 through a second screw 80. The gear teeth of the upper left signal gear 61 and the lower left signal gear 62 in the superimposed state are arranged in a staggered manner, and the appropriate tooth width can be adjusted, so that when the right signal gear 63 is meshed with the upper left signal gear 61 and the lower left signal gear 62 at the same time, the purpose of completely eliminating the gear backlash is achieved.
The side part of the potentiometer support 50 corresponds to a side platform 53 of the right signal gear 63 extending outwards and horizontally, a positioning hole 54 formed by precision die casting is arranged on the side platform 53, the potentiometer 40 is installed and fixed in the positioning hole 54, and the right signal gear 63 is rotatably connected with the potentiometer 40, so that the accuracy of the central moment of the signal gear transmission set and the installation accuracy of the potentiometer 40 are ensured, and the service life of the potentiometer 40 is prolonged.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (4)
1. The potentiometer support of the electric actuating mechanism is characterized in that the electric actuating mechanism comprises a worm gear box body (10), a transmission shaft (20), a signal rod (30), a potentiometer (40) and a potentiometer support (50) fixedly arranged on the worm gear box body (10), wherein the transmission shaft (20) and the signal rod (30) are integrally and rotatably connected and penetrate through the potentiometer support (50) and the worm gear box body (10); wherein the content of the first and second substances,
the potentiometer support (50) is provided with a signal rod mounting cavity (51) and an upper transmission shaft mounting cavity (52) which are communicated with each other at the middle part; a side platform (53) horizontally extending outside the side part; the transmission shaft (20) is rotatably matched in the upper transmission shaft mounting cavity (52), and the signal rod (30) which is connected with the transmission shaft (20) into a whole extends upwards and is rotatably matched in the signal rod mounting cavity (51) and extends out of the potentiometer support (50); the part of the signal rod (30) extending out of the potentiometer support (50) is provided with a signal gear transmission group (60); the signal gear transmission group (60) comprises a left signal gear and a right signal gear, the left signal gear is formed by superposing and assembling an upper left signal gear (61) and a lower left signal gear (62) which have the same specification on the signal rod (30), gear teeth of the upper left signal gear (61) and the lower left signal gear (62) in a superposed state are arranged in a staggered mode, and the right signal gear (63) is meshed with the upper left signal gear (61) and the lower left signal gear (62) simultaneously;
and the potentiometer (40) is fixedly arranged on the side platform (53), and the right signal gear (63) is rotatably connected with the potentiometer (40).
2. The potentiometer support according to claim 1, wherein the signal rod (30) and the signal rod mounting cavity (51) have a tolerance of 0.02-0.04mm, and the transmission shaft (20) and the transmission shaft mounting cavity (52) have a tolerance of 0.02-0.04 mm.
3. The potentiometer support according to claim 1 or 2, wherein the side platform (53) of the potentiometer support (50) is provided with a positioning hole (54), the positioning hole (54) is formed by precision die casting, and the potentiometer (40) is installed and fixed in the positioning hole (54).
4. The potentiometer support according to claim 1 or 2, wherein the upper and lower ends of the signal rod (30) are respectively connected to the transmission shaft (20) of the potentiometer support (50) by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835690.0U CN210687171U (en) | 2019-06-04 | 2019-06-04 | Potentiometer support of electric actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835690.0U CN210687171U (en) | 2019-06-04 | 2019-06-04 | Potentiometer support of electric actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210687171U true CN210687171U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920835690.0U Active CN210687171U (en) | 2019-06-04 | 2019-06-04 | Potentiometer support of electric actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210687171U (en) |
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2019
- 2019-06-04 CN CN201920835690.0U patent/CN210687171U/en active Active
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