Encoder and rotatable device suitable for same
阅读说明:本技术 编码器及其适用的可转动装置 (Encoder and rotatable device suitable for same ) 是由 蔡清雄 钟启闻 蔡明典 陈俊宏 于 2018-09-12 设计创作,主要内容包括:本发明提供一种编码器,是适用于可转动装置。编码器包括码盘组、至少一轴承、轴承壳体、主壳体、传感器及弹性组件。码盘组设置于可转动装置的旋转端,轴承环设于旋转端,且具有轴承内环面及轴承外环面,轴承内环面与旋转端相连接。轴承壳体环设于轴承并与轴承外环面相连接,主壳体与轴承壳体的第一端部相连接,传感器设置于主壳体并对应于码盘组,且传感器与码盘组之间具有间距,而弹性组件与轴承壳体的第二端部及可转动装置的固定端相连接。借此,以使得传感器与码盘组的间距维持固定,进而获得良好的位置检测性能与稳定的信号。(The invention provides an encoder which is suitable for a rotatable device. The encoder comprises a code disc group, at least one bearing, a bearing shell, a main shell, a sensor and an elastic component. The code wheel set is arranged at the rotating end of the rotatable device, the bearing ring is arranged at the rotating end and is provided with a bearing inner ring surface and a bearing outer ring surface, and the bearing inner ring surface is connected with the rotating end. The bearing shell is arranged on the bearing in a surrounding mode and connected with the outer ring surface of the bearing, the main shell is connected with the first end portion of the bearing shell, the sensor is arranged on the main shell and corresponds to the code disc set, a distance is reserved between the sensor and the code disc set, and the elastic assembly is connected with the second end portion of the bearing shell and the fixed end of the rotatable device. Therefore, the distance between the sensor and the code disc group is kept fixed, and good position detection performance and stable signals are obtained.)
1. An encoder, suitable for a rotatable device, wherein the rotatable device comprises a rotating end and a fixed end, the rotating end is connected with the fixed end, and the encoder comprises:
a code disc group arranged at the rotating end;
at least one bearing, which is arranged at the rotating end in a surrounding way, and each bearing is provided with a bearing inner ring surface and a bearing outer ring surface, and the bearing inner ring surface is connected with the rotating end;
the bearing shell is annularly arranged on the bearing and is connected with the outer ring surface of the bearing, wherein the bearing shell is provided with a first end part and a second end part which are positioned at two different sides;
a main housing connected to the first end of the bearing housing;
the sensor is arranged on the main shell and corresponds to the code wheel set, and a space is formed between the sensor and the code wheel set; and
an elastic component connected with the second end of the bearing shell and the fixed end of the rotatable device.
2. The encoder of claim 1, wherein the resilient member allows axial displacement of the bearing housing relative to the fixed end along the rotating end, the resilient member limits rotational movement of the bearing housing coaxial with the fixed end, the bearing limits axial displacement of the bearing housing relative to the rotating end along the rotating end, the bearing allows rotational movement of the bearing housing coaxial with the rotating end, and the main housing is rigidly connected to the first end of the bearing housing such that the spacing remains fixed.
3. The encoder of claim 1, wherein the elastic member comprises an elastic piece having a body portion and at least one bending portion, wherein the body portion has a through hole, the rotation end is disposed through the through hole, and each bending portion extends from the body portion and is fixed to the fixing end.
4. The encoder according to claim 3, wherein the resilient piece has two bending portions, and the two bending portions are respectively located at two different sides of the main body portion.
5. The encoder of claim 3, wherein the resilient member further comprises a damping member, and the resilient member further comprises two connecting portions extending from the body portion and connected to the damping member.
6. The encoder of claim 5, wherein the damping member has an opening and a protrusion extending from an outer edge of the opening, wherein the two connecting portions of the resilient plate are fixedly disposed on the protrusion of the damping member, the protrusion is connected to the second end of the bearing housing, and the rotating end is disposed through the through hole and the opening.
7. The encoder of claim 5, wherein the spring is a metal spring and the damping element is a rubber damping element.
8. The encoder of claim 1, wherein the rotating end comprises a first body, a second body and a third body, the first body is disposed through the set of disks, the second body is disposed through the bearing, and the third body is disposed through the elastic member, wherein the second body is connected to the first body and the third body.
9. The encoder of claim 8, wherein the diameter of the first body is smaller than the diameter of the second body, and the diameter of the second body is smaller than the diameter of the third body.
10. The encoder of claim 1, wherein the at least one bearing is two in number, and the two bearings are connected in series with each other and disposed in the bearing housing.
11. A rotatable device, comprising:
a fixed end;
a rotating part with a rotating end connected with the fixed end; and
an encoder, comprising:
a code disc group arranged at the rotating end;
at least one bearing, which is arranged at the rotating end in a surrounding way, and each bearing is provided with a bearing inner ring surface and a bearing outer ring surface, and the bearing inner ring surface is connected with the rotating end;
the bearing shell is annularly arranged on the bearing and is connected with the outer ring surface of the bearing, wherein the bearing shell is provided with a first end part and a second end part which are positioned at two different sides;
a main housing connected to the first end of the bearing housing;
the sensor is arranged on the main shell and corresponds to the code wheel set, and a space is formed between the sensor and the code wheel set; and
an elastic component connected with the second end and the fixed end of the bearing shell.
12. The rotatable device of claim 11 further comprising an encoder cover, the encoder cover coupled to the fixed end, the encoder being received in the encoder cover.
13. The rotatable device of claim 11, further comprising:
a base, wherein the rotating part is arranged on the base in a penetrating way;
a frame body connected with the fixed end and the base; and
a stator part disposed on the frame and surrounding the rotating part.
14. The rotatable device of claim 13, further comprising a first load bearing disposed at the fixed end and encircling the rotatable end and a second load bearing disposed at the base and encircling the rotatable portion.
15. The rotatable device according to claim 14, wherein the rotation end includes a first body, a second body, a third body and a fourth body, the first body is disposed through the stacking tray assembly, the second body is disposed through the bearing, the third body is disposed through the elastic component, and the fourth body is disposed through the first bearing, wherein the second body is connected to the first body and the third body, and the third body is connected to the fourth body.
16. The rotatable device of claim 15, wherein the diameter of the first body is smaller than the diameter of the second body, the diameter of the second body is smaller than the diameter of the third body, and the diameter of the third body is smaller than the diameter of the fourth body.
Technical Field
The present invention relates to an encoder and a rotatable device suitable for the encoder, and more particularly, to an encoder and a rotatable device suitable for the encoder, which can maintain a distance between a sensor and a code wheel set.
Background
With the advancement of technology and the increasing demand for automation, many products or devices utilizing motors, such as CNC machine tools (CNC machine tools) or robots, require precise control of speed or position. To achieve precise speed and position control, it is necessary to have accurate signal feedback, and therefore, the design of the encoder for detecting the rotational speed and rotational position of the motor and the feedback signal is particularly important.
Disclosure of Invention
It is therefore an object of the present invention to provide an encoder and a rotatable device suitable for the encoder, which solves and improves the problems and disadvantages of the prior art.
Another objective of the present invention is to provide an encoder and a rotatable device suitable for the same, wherein the bearing, the bearing housing and the elastic component are arranged, so that the distance between the sensor arranged on the main housing and the code wheel set arranged on the rotating end can be kept fixed without being affected by external factors, and thus good position detection performance and stable signal can be obtained.
Another objective of the present invention is to provide an encoder and a rotatable device suitable for the encoder, wherein the elastic component allows the axial relative displacement between the bearing housing and the fixed end and limits the coaxial rotational movement between the bearing housing and the fixed end, and the bearing limits the axial relative displacement between the bearing housing and the rotational end and allows the coaxial rotational movement between the bearing housing and the rotational end, and the bearing is coupled to the main housing and the bearing housing, so as to stably maintain the distance between the sensor and the encoder set, and the sensor disposed on the main housing can be easily repaired and replaced by detaching the housing when the sensor fails.
Another objective of the present invention is to provide an encoder and a rotatable device using the same, in which an elastic component including a spring and a damping component is provided, so that the rotational freedom of the bearing housing can be limited without affecting the axial displacement of the bearing housing, and the vibration of the encoder can be reduced, thereby obtaining a signal with good and stable quality.
In order to achieve the above object, a preferred embodiment of the present invention provides an encoder adapted for a rotatable device, wherein the rotatable device includes a rotating end and a fixed end, the rotating end is connected to the fixed end, and the encoder includes: a code disc group arranged at the rotating end; at least one bearing, which is arranged at the rotating end in a surrounding way, and each bearing is provided with a bearing inner ring surface and a bearing outer ring surface, and the bearing inner ring surface is connected with the rotating end; the bearing shell is annularly arranged on the bearing and is connected with the outer ring surface of the bearing, wherein the bearing shell is provided with a first end part and a second end part which are positioned at two different sides; a main housing connected to the first end of the bearing housing; the sensor is arranged on the main shell and corresponds to the code wheel set, and a space is formed between the sensor and the code wheel set; and an elastic component connected with the second end of the bearing shell and the fixed end of the rotatable device.
In order to achieve the above object, another preferred embodiment of the present invention provides a rotatable device, including: a fixed end; a rotating part with a rotating end connected with the fixed end; and an encoder, comprising: a code disc group arranged at the rotating end; at least one bearing, which is arranged at the rotating end in a surrounding way, and each bearing is provided with a bearing inner ring surface and a bearing outer ring surface, and the bearing inner ring surface is connected with the rotating end; the bearing shell is annularly arranged on the bearing and is connected with the outer ring surface of the bearing, wherein the bearing shell is provided with a first end part and a second end part which are positioned at two different sides; a main housing connected to the first end of the bearing housing; the sensor is arranged on the main shell and corresponds to the code wheel set, and a space is formed between the sensor and the code wheel set; and an elastic component connected with the second end part and the fixed end of the bearing shell.
Drawings
FIG. 1 is a schematic cross-sectional exploded view of an encoder and a rotatable device suitable for use therein according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram showing the detailed structure of the encoder and its applicable rotatable device shown in fig. 1.
FIG. 3 is a schematic diagram of a rotatable device for an encoder according to a preferred embodiment of the present invention.
FIG. 4 is an exploded view of an encoder and a rotatable device suitable for use therein according to a preferred embodiment of the present invention.
FIG. 5 is an exploded view of an encoder according to a preferred embodiment of the present invention.
FIG. 6 is an exploded view of an encoder according to another preferred embodiment of the present invention.
FIG. 7 is an exploded view of an encoder according to another preferred embodiment of the present invention.
FIG. 8 is an exploded view of an encoder according to another preferred embodiment of the present invention.
Description of reference numerals:
1: encoder for encoding a video signal
11: code disc set
12: bearing assembly
121: inner ring surface of bearing
122: outer ring surface of bearing
13: bearing housing
131: first end part
132: second end portion
14: main shell
15: sensor with a sensor element
16. 16': elastic component
161. 161': spring plate
1610: through hole
1611. 1611': body part
1612. 1612': a bent part
1613. 1613': connecting part
162. 162': damping assembly
1620: opening of the container
1621: projecting part
2: rotatable device
20: rotating part
21: rotating end
211: first body
212: second body
213: third body
214: fourth body
22: fixed end
23: encoder cover
24: base seat
25: frame body
26: stator part
27: first bearing
28: second bearing
D: distance between each other
Detailed Description
Some exemplary embodiments that embody features and advantages of the invention will be described in detail in the description that follows. It is to be understood that the invention is capable of modification in various ways without departing from the scope of the appended claims, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, wherein fig. 1 is a schematic cross-sectional exploded view of an encoder and a rotatable apparatus suitable for the encoder according to a preferred embodiment of the present invention, fig. 2 is a schematic detail view of the encoder and the rotatable apparatus suitable for the encoder shown in fig. 1, fig. 3 is a schematic structural view of a rotatable apparatus suitable for the encoder according to a preferred embodiment of the present invention, fig. 4 is a schematic exploded view of the encoder and the rotatable apparatus suitable for the encoder according to a preferred embodiment of the present invention, and fig. 5 is a schematic exploded view of the encoder according to a preferred embodiment of the present invention. As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the
The stack of
The
In other words, the encoder and the rotatable device suitable for the encoder of the present invention are provided with the bearing, the bearing housing and the elastic component, so that the distance between the sensor arranged on the main housing and the code wheel set arranged on the rotating end can be kept fixed without being affected by external factors, and good position detection performance and stable signals can be obtained. And the elastic component allows the axial relative displacement between the bearing shell and the fixed end and limits the coaxial rotary motion of the bearing shell and the fixed end, and the bearing limits the axial relative displacement between the bearing shell and the rotary end and allows the coaxial rotary motion of the bearing shell and the rotary end, and the elastic component is matched with the main shell and the bearing shell to be rigidly connected, so that the distance between the sensor and the code wheel set can be stably maintained, and the sensor arranged on the main shell can be easily repaired and replaced by disassembling the shell when in failure.
In some embodiments, the
In some embodiments, the
In some embodiments, the
Please refer to fig. 1, fig. 2 and fig. 5. As shown in fig. 1, fig. 2 and fig. 5, the
In some embodiments, the
Referring to fig. 6, fig. 6 is an exploded view of an encoder according to another preferred embodiment of the invention. As shown in fig. 6, in some embodiments, the
In other words, the encoder and the rotatable device suitable for the encoder of the invention are provided with the elastic component comprising the elastic sheet and the damping component, so that the rotational freedom degree of the encoder can be limited under the condition of not influencing the axial displacement of the lantern ring, and the vibration of the encoder can be reduced, thereby obtaining signals with good quality and stability.
Referring to fig. 7, fig. 7 is an exploded view of an encoder according to another preferred embodiment of the invention. As shown in fig. 7, in some embodiments, the
Referring to fig. 8, fig. 8 is an exploded view of an encoder according to another preferred embodiment of the present invention. As shown in fig. 8, in some embodiments, the
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5. As shown in fig. 1, 2, 3, 4 and 5, the
In some embodiments, the
The
In some embodiments, the
In summary, the present invention provides a rotatable device for an encoder, in which a bearing, a bearing housing and an elastic component are disposed, so that a distance between a sensor disposed on a main housing and a code wheel set disposed on a rotation end can be maintained fixed without being affected by external factors, and a good position detection performance and a stable signal can be obtained. And the elastic component allows the axial relative displacement between the bearing shell and the fixed end and limits the coaxial rotary motion of the bearing shell and the fixed end, and the bearing limits the axial relative displacement between the bearing shell and the rotary end and allows the coaxial rotary motion of the bearing shell and the rotary end, and the elastic component is matched with the main shell and the bearing shell to be rigidly connected, so that the distance between the sensor and the code wheel set can be stably maintained, and the sensor arranged on the main shell can be easily repaired and replaced by disassembling the shell when in failure. Meanwhile, through the arrangement of the elastic assembly comprising the elastic sheet and the damping assembly, the rotation freedom degree of the bearing shell can be limited under the condition of not influencing the axial displacement of the bearing shell, and the vibration of the encoder can be reduced, so that a signal with good quality and stability is obtained.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to one skilled in the art that various modifications can be made without departing from the scope of the invention as defined in the appended claims.
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