Size6 linear motor with encoder

Abstract

This utility model discloses a SIZE6 linear motor with an encoder, including a SIZE6 linear motor body, a base, a circuit board, an encoder, a code disk, and a cover. One end of the rotor shaft of the SIZE6 linear motor body is exposed outside the SIZE6 linear motor body. The base is fixed to one end of the SIZE6 linear motor body. The circuit board mates with the base, and the encoder body is mounted on the circuit board. The base has a first through hole, and the circuit board has a second through hole. One end of the rotor shaft passes through the first and second through holes and connects to the code disk. There is a gap between the code disk and the encoder body. The cover covers the circuit board, the encoder body, and the code disk, and the cover is fixed to the base. This utility model can meet the installation requirements of different types of SIZE6 linear motors.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a SIZE6 linear motor with an encoder. Background Technology

[0002] The SIZE6 linear motor gets its name from having multiple segments or multiple rotor cores. The rotor in the SIZE6 linear motor is integral (e.g., Figure 1 The rotor core 2 includes a rotor shaft 1, a rotor core 2, multiple magnets 3, and multiple magnetic shielding plates 4. The rotor core 2, magnets 3, and magnetic shielding plates 4 are mounted on the rotor shaft 1. A magnet 3 is provided between the first rotor core and the rotor core adjacent to it, and a magnet 3 is provided between the last rotor core and the rotor core adjacent to it. The remaining rotor cores 2 located between the first and last rotor cores 2 are separated by magnetic shielding plates 4. Multiple teeth 2a are arranged circumferentially on the surface of each rotor core 2, and a tooth groove 2b is formed between two adjacent teeth 2a.

[0003] SIZE6 linear motors are widely used in the market due to their stable quality, small size, high thrust, and various step length specifications. However, due to the open-loop control characteristics of linear motors, customers need to add an additional electrical signal feedback system for special applications requiring closed-loop control, increasing product costs. Currently, most encoders compatible with the motor are incremental encoders, but due to customer installation size requirements, the encoder size cannot exceed 16mm, and existing encoders with such small dimensions are not compatible with all SIZE6 motor series. Utility Model Content

[0004] This invention provides a SIZE6 linear motor with an encoder, which can meet the installation requirements of different types of SIZE6 linear motors.

[0005] A SIZE6 linear motor with an encoder includes a SIZE6 linear motor body, a base, a circuit board, an encoder, a code disk, and a cover. One end of the rotor shaft of the SIZE6 linear motor body is exposed outside the SIZE6 linear motor body. The base is fixed to one end of the SIZE6 linear motor body. The circuit board mates with the base. The encoder body is mounted on the circuit board. The base has a first through hole, and the circuit board has a second through hole. One end of the rotor shaft passes through the first and second through holes and connects to the code disk. There is a gap between the code disk and the encoder body. The cover covers the circuit board, the encoder body, and the code disk, and the cover is fixed to the base.

[0006] Furthermore, it also includes screws. The SIZE6 linear motor body has a threaded hole, the base has a first mounting hole, and the circuit board has a second mounting hole. The screw passes through the second mounting hole and the first mounting hole and is threaded into the threaded hole, so that the base is fastened to the SIZE6 linear motor body and the circuit board as one unit.

[0007] Furthermore, the base is provided with a positioning post, and the circuit board is provided with a third mounting hole. The positioning post is inserted into the third mounting hole and is clearance-fitted with the third mounting hole.

[0008] Furthermore, the base is provided with a connecting seat that deforms under pressure, the connecting seat is provided with an assembly hole, and the cover is provided with protruding teeth. After the protruding teeth press the connecting seat into the assembly hole, the protruding teeth are positioned by the connecting seat to fix the cover and the base into one piece.

[0009] Furthermore, the protruding teeth are conical.

[0010] This utility model has the following advantages:

[0011] First, the encoder adopts a special structure, that is, the encoder body is mounted on the circuit board, and the base and circuit board are designed with openings to mount the code disk on the rotor shaft. The rotor shaft passes through the circuit board, which can meet the assembly of different types of motors.

[0012] Secondly, protruding teeth are provided on the circumferential surface of the cover, and connecting seats are provided on the base. The assembly of the cover and the base is achieved by the protruding teeth engaging with the assembly holes on the connecting seats to form an inverted structure, thereby saving installation space.

[0013] Third, the circuit board is positioned by the positioning pins on the base, and then the circuit board and the base are fixed to the rear cover by screws, which reduces the cumulative error caused by assembly. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the SIZE6 linear motor with encoder according to this utility model.

[0015] Figure 2 This is an exploded view of the SIZE6 linear motor with encoder of this utility model.

[0016] Figure 3 This is an assembly diagram of the base and circuit board.

[0017] Figure 4 This is an assembly drawing of the casing, base, and circuit board.

[0018] Labels in the attached diagram:

[0019] SIZE6 linear motor body 10, rotor shaft 10a, threaded hole 10b, base 11, first through hole 11a, first mounting hole 11b, positioning post 11c, connecting seat 11d, assembly hole 11e, clearance opening 11f, circuit board 12, second through hole 12a, third mounting hole 12c, plug-in terminal 12d, encoder body 13, code disk 14, threaded through hole 14a, cover 15, convex tooth 15a, screw 16. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 4 The present invention discloses a SIZE6 linear motor with an encoder, comprising a SIZE6 linear motor body 10, a base 11, a circuit board 12, an encoder body 13, a code disk 14, and a cover 15. One end of the rotor shaft 10a of the SIZE6 linear motor body 10 is exposed outside the SIZE6 linear motor body 10. The base 11 is fixed to one end of the SIZE6 linear motor body 10. The circuit board 12 is fitted to the base 11. The encoder body 13 is mounted on the circuit board 12. The base 11 has a first through hole 11a, and the circuit board 12 has a second through hole 12a. One end of the rotor shaft 10a passes through the first through hole 11a and the second through hole 12a and is connected to the code disk 14. The code disk 14 is provided with a radial threaded through hole 14a. A connecting screw (not shown in the figure) is threadedly connected to the threaded through hole 14a. The connecting screw is tightened or threadedly connected to the rotor shaft 10a, so that the code disk 14 and the rotor shaft 10a are fixed together. There is a gap between the code disk 14 and the encoder body 13. The encoder body 13 converts the angular displacement of the code disk 14 into an electrical signal. The cover 15 covers the circuit board 12, the encoder body 13 and the code disk 14. The cover 15 is fixed to the base 11.

[0022] This utility model also includes a screw 16. The SIZE6 linear motor body 10 is provided with a threaded hole 10b, which is located on the rear end cover of the SIZE6 linear motor body 10. The base 11 is provided with a first mounting hole 11b, and the circuit board 12 is provided with a second mounting hole 12b. The screw 16 passes through the second mounting hole 12b and the first mounting hole 11b and is threadedly connected to the threaded hole 10b, so that the base 11 is fastened to the SIZE6 linear motor body 10 and the circuit board 12 as a whole.

[0023] The base 11 is provided with a positioning post 11c, and the circuit board 12 is provided with a third mounting hole 12c. The positioning post 11c is inserted into the third mounting hole 12c and is clearance-fitted with the third mounting hole 12c. By cooperating with the positioning post 11c and the third mounting hole 12c, incorrect installation of the circuit board 12 can be avoided, ensuring that the encoder body 13 on the circuit board 12 is in the correct position, thereby enabling the encoder body 13 to correctly cooperate with the code disk 14.

[0024] The base 11 is provided with a connecting seat 11d that deforms under pressure. The base 11 is a plastic part, and the base 11 and the connecting seat 11d are integrally formed by injection molding. The connecting seat 11d is provided with an assembly hole 11e, and the cover 15 is provided with a protruding tooth 15a. After the protruding tooth 15a presses the connecting seat 11d into the assembly hole 11e, the protruding tooth 15a is positioned by the connecting seat 11d, that is, the protruding tooth 15a is engaged in the assembly hole 11e and holds the connecting seat 11d, thereby fixing the cover 15 and the base 11 together. In this utility model, the protruding tooth 15a is conical.

[0025] The base 11 is provided with a clearance opening 11f, and the circuit board 12 is provided with a plug-in terminal 12d. The plug-in terminal 12d cooperates with the clearance opening 11f and is used to connect an electrical signal line. The electrical signal line passes through the clearance opening 11f and connects to the plug-in terminal 12d. The electrical signal line provides power to the circuit board 12 and transmits the electrical signal converted by the encoder body 13.

Claims

1. A SIZE6 linear motor with an encoder, comprising a SIZE6 linear motor body (10), characterized in that, It also includes a base (11), a circuit board (12), an encoder body (13), a code disk (14), and a cover (15). One end of the rotor shaft (10a) of the SIZE6 linear motor body (10) is exposed outside the SIZE6 linear motor body (10). The base (11) is fixed to one end of the SIZE6 linear motor body (10). The circuit board (12) is fitted with the base (11). The encoder body (13) is mounted on the circuit board (12). The base (11) has a first through hole (11a), the circuit board (12) has a second through hole (12a), one end of the rotor shaft (10a) passes through the first through hole (11a) and the second through hole (12a) and is connected to the code disk (14). There is a gap between the code disk (14) and the encoder body (13). The cover (15) covers the circuit board (12), the encoder body (13) and the code disk (14), and the cover (15) is fixed to the base (11).

2. The SIZE6 linear motor with encoder according to claim 1, characterized in that, It also includes screws (16). The SIZE6 linear motor body (10) is provided with a threaded hole (10b). The base (11) is provided with a first mounting hole (11b). The circuit board (12) is provided with a second mounting hole (12b). The screw (16) passes through the second mounting hole (12b) and the first mounting hole (11b) and is threadedly connected to the threaded hole (10b), so that the base (11) is fastened to the SIZE6 linear motor body (10) and the circuit board (12) as a whole.

3. The SIZE6 linear motor with encoder of claim 1, wherein, The base (11) is provided with a positioning post (11c), and the circuit board (12) is provided with a third mounting hole (12c). The positioning post (11c) is inserted into the third mounting hole (12c) and is clearance-fitted with the third mounting hole (12c).

4. The SIZE 6 linear motor with an encoder according to claim 1, characterized in that, The base (11) is provided with a connecting seat (11d) that deforms under pressure. The connecting seat (11d) is provided with an assembly hole (11e). The cover (15) is provided with a tooth (15a). After the tooth (15a) presses the connecting seat (11d) into the assembly hole (11e), the tooth (15a) is positioned by the connecting seat (11d) to fix the cover (15) and the base (11) into one piece.

5. The SIZE 6 linear motor with an encoder according to claim 4, characterized in that, The protruding tooth (15a) is conical.

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