Photoelectric encoder rotation protection device

Abstract

The utility model discloses a rotation protection device for a photoelectric encoder, and aims to solve the technical problems that in the prior art, an output shaft of an encoder main body is inconvenient to stop in time, and the protection effect cannot be effectively achieved. Comprising an encoder body, a connector is assembled on the side wall of the encoder body, an output shaft is arranged on the encoder body, the side wall, located on one side of the output shaft, of the encoder body is fixedly connected with a round shell, the side wall of the round shell is rotationally connected with a transmission shaft, and the end face of the transmission shaft is of a hollow structure. A transmission assembly is arranged between the output shaft and the transmission shaft, a control assembly is arranged on the side wall of the round shell, and an access cover is assembled on the side wall of the round shell. The output shaft can be stopped in time through the control assembly, so that the transmission shaft idles, on one hand, the encoder body can be protected, and on the other hand, the influence on a product is reduced; and the use efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photoelectric encoders, and particularly relates to a rotary protection device for a photoelectric encoder. Background Technique

[0002] A photoelectric encoder is a sensor widely used to measure rotational angle, position, speed, and direction. It converts mechanical motion into electrical signals through photoelectric conversion technology and is widely applied in many fields such as automated manufacturing and machining.

[0003] Since the output end of a photoelectric encoder is usually used in cooperation with a servo motor to generate an angle signal to control the movement of the servo motor, there will also be a problem of excessive rotational angle error. When the existing photoelectric encoder determines that the angle error is too large, it cannot promptly stop the output shaft of the photoelectric encoder, fails to play a protective role, easily affects the accuracy of products in processing or production, and reduces its utilization rate.

[0004] Therefore, a rotary protection device for a photoelectric encoder is designed to change the above technical defects. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a rotary protection device for a photoelectric encoder, which aims to solve the technical problems that it is not convenient to promptly stop the output shaft of the encoder main body and cannot effectively play a protective role in the prior art.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the utility model provides such a rotary protection device for a photoelectric encoder, which includes an encoder main body. A connector is assembled on the side wall of the encoder main body. An output shaft is arranged on the encoder main body. A circular shell is fixedly connected to the side wall of the encoder main body on one side of the output shaft. A transmission shaft is rotatably connected to the side wall of the circular shell. The end face of the transmission shaft is a hollow structure. A transmission component is arranged between the output shaft and the transmission shaft. A control component is arranged on the side wall of the circular shell. An inspection cover is assembled on the side wall of the circular shell.

[0009] Further, the transmission component includes a first gear fixedly connected to the end face of the output shaft. A second gear is rotatably connected to the side wall of the encoder main body. A round rod is slidably connected to the inner cavity of the transmission shaft. The other end of the round rod is fixedly connected to a third gear. Both the first gear and the third gear are meshed with the second gear.

[0010] Further, two sliders are fixedly connected to the side wall of the round rod. Two sliding grooves are opened on the inner wall of the transmission shaft. The sliders are slidably connected to the sliding grooves.

[0011] Furthermore, the control component includes a connecting plate assembled on the side wall of the round rod. A through groove is provided on the side wall of the round shell. The connecting plate penetrates through the through groove. An electric push rod is fixedly installed on the side wall of the encoder body, and the output end of the electric push rod is fixedly connected to the connecting plate.

[0012] Furthermore, a protective cover is fixedly connected to the side wall of the round shell, and the electric push rod is located inside the protective cover.

[0013] Furthermore, a sealing plate is fixedly connected to the side wall of the connecting plate. A sealing groove is provided on the side wall of the through groove, and the sealing plate is adapted to the sealing groove.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] Through the design of the encoder body, the round shell, the transmission shaft, the transmission component and the control component, when the rotation angle error of the output shaft servo motor is too large, the control component can be used to stop the output shaft in time, so that the transmission shaft rotates idly. On the one hand, it can protect the encoder body, and on the other hand, it can reduce the impact on the product and improve its use efficiency. Brief description of the drawings

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is a partial structural schematic diagram of the present utility model;

[0019] Figure 3 is a partial sectional structural schematic diagram of the present utility model;

[0020] Figure 4 is the present utility model Figure 2 The enlarged view at A in;

[0021] Figure 5 is the present utility model Figure 3 The enlarged view at B in;

[0022] Figure 6 is the present utility model Figure 3 The enlarged view at C in.

[0023] The reference signs in the drawings are: 1. Encoder body; 2. Connector; 3. Output shaft; 4. Round shell; 5. Transmission shaft; 6. First gear; 7. Second gear; 8. Third gear; 9. Round rod; 10. Slide block; 11. Slide groove; 12. Connecting plate; 13. Through groove; 14. Electric push rod; 15. Sealing plate; 16. Sealing groove; 17. Protective cover; 18. Maintenance cover. Specific Embodiment

[0024] This specific embodiment is an optical encoder rotation protection device, and its structural schematic diagram is as shown in Figures 1-6 Figure 5. It includes an encoder main body 1, a connector 2 is assembled on the side wall of the encoder main body 1, an output shaft 3 is arranged on the encoder main body 1, a circular shell 4 is fixedly connected to the side wall of the encoder main body 1 on one side of the output shaft 3, a transmission shaft 5 is rotatably connected to the side wall of the circular shell 4, the end face of the transmission shaft 5 is a hollow structure, a transmission assembly is arranged between the output shaft 3 and the transmission shaft 5, a control assembly is arranged on the side wall of the circular shell 4, and an inspection cover 18 is assembled on the side wall of the circular shell 4.

[0025] Among them, the working principle of the optical encoder is based on photoelectric conversion technology and can output electrical signals. This is an existing mature technology, and the structure of the optical encoder will not be elaborated in this solution.

[0026] As shown in Figure 2 and Figure 4 Figure 6, the transmission assembly includes a first gear 6 fixedly connected to the end face of the output shaft 3, a second gear 7 is rotatably connected to the side wall of the encoder main body 1, a round rod 9 is slidably connected to the inner cavity of the transmission shaft 5, the other end of the round rod 9 is fixedly connected to a third gear 8, and both the first gear 6 and the third gear 8 are meshed with the second gear 7.

[0027] Specifically, the diameters of the first gear 6, the second gear 7, and the third gear 8 are the same. Therefore, when the first gear 6 rotates to drive the transmission shaft 5 to rotate, their rotation speeds are the same, avoiding the problem of excessive rotation angle error, thereby improving the transmission efficiency.

[0028] As shown in Figure 3 and Figure 5 Figure 7, two sliders 10 are fixedly connected to the side wall of the round rod 9, and two sliding grooves 11 are opened on the inner wall of the transmission shaft 5, and the sliders 10 are slidably connected to the sliding grooves 11.

[0029] Among them, by using the connection method of the slider 10 and the sliding groove 11, not only can the rotation of the round rod 9 be transmitted to the transmission shaft 5, but also a limiting effect can be achieved without affecting the telescopic movement of the round rod 9.

[0030] As shown in Figure 3 and Figure 6 Figure 8, the control assembly includes a connecting plate 12 assembled on the side wall of the round rod 9, a through groove 13 is opened on the side wall of the circular shell 4, the connecting plate 12 penetrates through the through groove 13, and an electric push rod 14 is fixedly installed on the side wall of the encoder main body 1, and the output end of the electric push rod 14 is fixedly connected to the connecting plate 12.

[0031] Among them, the electric push rod 14 adopts a micro electric push rod 14, and its drive signal is affected by the rotation angle of the encoder body 1. When the encoder body 1 outputs a signal with a large rotation angle error, the background system judges the signal and drives the electric push rod 14 to disconnect the transmission, which can play a protective role for both the encoder body 1 and the production.

[0032] As Figure 1 shown, a protective cover 17 is fixedly connected to the side wall of the circular shell 4, and the electric push rod 14 is located inside the protective cover 17. By setting the protective cover 17, the electric push rod 14 can be hermetically protected, so that the encoder body 1 can be used in a variety of relatively harsh production environments.

[0033] As Figure 6 shown, a sealing plate 15 is fixedly connected to the side wall of the connecting plate 12, and a sealing groove 16 is opened on the side wall of the through groove 13. The sealing plate 15 is adapted to the sealing groove 16.

[0034] Specifically, a certain amount of lubricating oil needs to be applied during the operation of the transmission component. In order to avoid the influence of the lubricating oil on the electric push rod 14, the sealing plate 15 can be used for sealing.

[0035] Working principle: During the operation of the encoder body 1, the output shaft 3 drives the first gear 6 to rotate. The first gear 6 meshes with the second gear 7 and drives the third gear 8 to rotate. The third gear 8 drives the transmission shaft 5 to rotate through the round rod 9. If the rotation angle error between the encoder body 1 and the external facilities is too large during the operation, the electric push rod 14 is started to drive the connecting plate 12 to move. The connecting plate 12 drives the third gear 8 to disengage from the second gear 7 through the round rod 9, so that the transmission shaft 5 is in an idling state. On the one hand, it can play a protective role for the encoder body 1, on the other hand, it reduces the influence on the product and improves its use efficiency.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. An optical encoder rotation protection device, comprising an encoder main body (1), a connector (2) is assembled on the side wall of the encoder main body (1), and an output shaft (3) is arranged on the encoder main body (1), characterized in that: The encoder body (1) is fixedly connected with a circular shell (4) on the side wall of one side of the output shaft (3). A transmission shaft (5) is rotatably connected to the side wall of the circular shell (4). The end face of the transmission shaft (5) is of a hollow structure. A transmission assembly is arranged between the output shaft (3) and the transmission shaft (5). A control assembly is arranged on the side wall of the circular shell (4). An inspection cover (18) is assembled on the side wall of the circular shell (4).

2. The rotation protection device of an optoelectronic encoder according to claim 1, characterized in that: The transmission assembly includes a first gear (6) fixedly connected to the end face of the output shaft (3). A second gear (7) is rotatably connected to the side wall of the encoder body (1). A round rod (9) is slidably connected to the inner cavity of the transmission shaft (5). The other end of the round rod (9) is fixedly connected with a third gear (8). Both the first gear (6) and the third gear (8) are meshed with the second gear (7).

3. The rotational protection device for an optoelectronic encoder according to claim 2, characterized in that: Two sliding blocks (10) are fixedly connected to the side wall of the round rod (9). Two sliding grooves (11) are formed in the inner wall of the transmission shaft (5). The sliding blocks (10) are slidably connected with the sliding grooves (11).

4. The rotation protection device of an optoelectronic encoder according to claim 1, characterized in that: The control assembly includes a connecting plate (12) assembled on the side wall of the round rod (9). A through groove (13) is formed in the side wall of the circular shell (4). The connecting plate (12) penetrates through the through groove (13). An electric push rod (14) is fixedly installed on the side wall of the encoder body (1). The output end of the electric push rod (14) is fixedly connected with the connecting plate (12).

5. A rotational protection device for an optoelectronic encoder according to claim 4, characterized in that: A protective cover (17) is fixedly connected to the side wall of the circular shell (4). The electric push rod (14) is located inside the protective cover (17).

6. The rotational protection device for an optoelectronic encoder according to claim 4, wherein: A sealing plate (15) is fixedly connected to the side wall of the connecting plate (12). A sealing groove (16) is formed in the side wall of the through groove (13). The sealing plate (15) is adapted to the sealing groove (16).

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