Terminal split type structure and encoder thereof

Abstract

The utility model discloses a terminal split type structure and an encoder thereof, which comprises a base, a plurality of terminals and a plurality of brushes, the plurality of terminals and the plurality of brushes are made of different metal materials, the plurality of terminals are fixedly connected with the base, and one end of each brush is riveted with the terminal which is not outside the base; the base, the terminal and the brush are manufactured respectively, three different raw materials can be adopted in the manufacturing step, the brush can be made of a soft material, and the terminal can be made of a material with high hardness. According to the utility model, the terminal can be easily inserted into the PCB, frequent plugging operation can be borne, stable connection between the terminal and external equipment is maintained, and signal transmission is more stable.

Description

Technical Field

[0001] This utility model belongs to the technical field of encoder terminals, specifically a terminal split structure and its encoder. Background Technology

[0002] An encoder is a sensor device that converts mechanical motion into electrical signals, commonly used in position detection, speed measurement, and direction determination. In its working principle, the brush, acting as a conductive elastic contact, directly contacts the surface of a rotating disk. As the disk rotates, electrical signals are generated by passing through the conductive and non-conductive areas. The terminals, which are metal pins or contacts fixed to the housing, do not directly contact the rotating disk but are connected to the brush internally. They are responsible for transmitting the electrical signals generated by the brush to the external circuit and providing power and grounding support to ensure reliable signal output.

[0003] In the existing technology, the encoder brush and terminal are usually manufactured as a single piece. Since the brush requires a relatively soft material, the terminal material is also relatively soft. When plugged into the PCB board, the terminal is prone to deformation, making it difficult to insert the terminal into the PCB board. Utility Model Content

[0004] The purpose of this invention is to provide a terminal-separated structure and its encoder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A terminal split structure includes a base, and several terminals and several brushes made of different metal materials. The terminals are fixedly connected to the base, and one end of each brush is riveted to a terminal located outside the base.

[0007] A further technical solution involves providing an annular flange on the base, with corresponding clearance holes on the terminals at the positions of the annular flange.

[0008] A further technical solution involves a fixing groove formed on the side wall of the base, through which the terminal passes and is fixedly connected to the groove wall. A bearing groove is formed inside the base, communicating with the fixing groove. The terminal located within the base is installed in the bearing groove.

[0009] In a further technical solution, the brush includes a connecting part and an inclined part. The connecting part is horizontally arranged and fixedly connected to the inclined part. The connecting part is riveted to the terminal, and the riveting point between the connecting part and the terminal is located in the fixing groove.

[0010] In a further technical solution, the terminal includes a switch terminal portion and a signal terminal portion, the switch terminal portion and the signal terminal portion are designed separately, and the signal terminal portion is riveted to the brush.

[0011] An encoder includes a turntable assembly, a housing, a spring, and a terminal split structure as described above. The base of the terminal split structure is connected to the housing, the base of the terminal split structure is rotatably connected to the turntable assembly, and the brush of the terminal split structure contacts the turntable assembly.

[0012] In a further technical solution, the turntable assembly includes a rotating shaft and a turntable, the rotating shaft is inserted into the turntable, the rotating shaft can drive the turntable to rotate, and the brush with the split terminal structure contacts the turntable.

[0013] In a further technical solution, a bushing is provided on the outer sleeve of the rotating shaft, a cover is fixedly connected to the bushing, the cover is fixedly connected to the base, a positioning post is provided inside the cover, and a positioning hole is provided on the spring piece, with the positioning hole fitted onto the positioning post.

[0014] In a further technical solution, two square through slots are provided at both ends of the cover, and triangular protrusions are provided on the side wall of the base. The side wall of the shell is engaged with the square through slots, and a through hole is provided on the side wall of the shell, which is engaged with the triangular protrusions.

[0015] In a further technical solution, the bottom end of the side wall of the housing extends towards the pivot to form a fixing block, the fixing block abuts against the bottom end of the base, and the number of fixing blocks is four.

[0016] The beneficial effects of this utility model are:

[0017] This invention manufactures a base, a terminal, and a brush, using three different raw materials. For example, the brush can be made of a softer material, while the terminal can be made of a harder material. This allows the terminal to withstand frequent insertion and removal operations and stronger external forces, maintaining a stable connection between the terminal and the external device, thus making signal transmission more stable. After manufacturing, the operator can first fix the terminal to the base. In this embodiment, the method of fixing the terminal to the base is not limited. Then, the operator can rivet the terminal to the brush. In this embodiment, at least two rivets are used for fixing to prevent the brush from rotating relative to the terminal.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1: Assembly diagram of embodiment 1 of the terminal split structure of this utility model.

[0020] Figure 2 The overall structure of Embodiment 1 of the terminal split structure of this utility model Figure 1 .

[0021] Figure 3 The overall structure of Embodiment 1 of the terminal split structure of this utility model Figure 2 .

[0022] Figure 4 : A schematic diagram of the terminal and brush structure of Embodiment 1 of this utility model.

[0023] Figure 5 : An encoder structure diagram of Embodiment 3 of this utility model.

[0024] Figure 6 An encoder explosion according to Embodiment 3 of this utility model Figure 1 .

[0025] Figure 7 An encoder structure according to Embodiment 3 of this utility model. Figure 2 .

[0026] Figure 8 The overall structure of embodiment 2 of the terminal split structure of this utility model. Figure 1 .

[0027] Figure 9 The overall structure of embodiment 2 of the terminal split structure of this utility model. Figure 2 .

[0028] Figure 10 : A structural diagram of an incremental encoder according to Embodiment 3 of this utility model.

[0029] Reference numerals: 1. Base; 2. Terminal; 201. Switch terminal; 202. Signal terminal; 21. Pin; 3. Brush; 31. Connecting part; 32. Inclined part; 4. Clearance hole; 5. Annular flange; 6. Bearing groove; 7. Housing; 71. Side wall; 8. Spring; 9. Shaft; 10. Turntable; 11. Bushing; 12. Positioning pin; 13. Positioning hole; 14. Square through slot; 15. Triangular protrusion; 16. Through hole; 17. Fixing block; 18. Cover; Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] Please refer to Figure 1-7 ;

[0032] Example 1:

[0033] An encoder is a device that converts rotation into electrical signals for measuring position, speed, or direction. Its core components include a base 1, a brush 3, and a terminal 2. The base 1 provides structural support, the brush 3 reads signals by contacting the code disk, and the terminal 2 is responsible for transmitting the signals to an external system. If the base 1, brush 3, and terminal 2 are integrally formed, i.e., all three are made of the same material, it can simplify the design and reduce costs. However, due to insufficient material rigidity or wear resistance, the terminal 2 may have low hardness, making it prone to deformation under stress, which in turn leads to a shorter encoder lifespan.

[0034] Furthermore, in the traditional one-piece molding process of the base 1, brush 3, and terminal 2, the base 1, brush 3, and terminal 2 are first integrally molded using a mold. The brush 3 is horizontally positioned in the mold. To make the brush 3 curl up to meet functional requirements, a hole needs to be made at the bottom of the base 1. The brush 3 is then stamped through this hole to deform it and curl upwards. After stamping, an additional shell is usually added to cover the opening at the bottom of the base 1 to improve its appearance. However, the opening at the bottom of the base 1 reduces the sealing and integrity of the base 1, which may allow dust, moisture, or other impurities to enter, affecting the durability and reliability of the product. Moreover, the stamping process increases the complexity of the production process, not only increasing manufacturing costs but also potentially causing inconsistent curling angles of the brush 3 due to insufficient stamping precision, affecting functional stability. In addition, the use of the shell further increases material costs and assembly difficulty, resulting in low overall production efficiency. It may also lead to loosening or detachment during long-term use due to insufficient tightness between the shell and the base 1.

[0035] Therefore, this application discloses a split-type terminal structure, which aims to carry out a separate design. Specifically, it includes a base 1, and several terminals 2 and several brushes 3 made of different metal materials. The terminals 2 are fixedly connected to the base 1, and one end of the brush 3 is riveted to a terminal 2 located outside the base 1. In this embodiment, there are two structures where the brush 3 is located outside the base 1. The first is that the riveting point between the brush 3 and the terminal 2 is located in the inner cavity of the base 1, and the second is that the riveting point between the brush 3 and the terminal 2 is located inside the side wall of the base 1. In this embodiment, the riveting point between the brush 3 and the terminal 2 is located inside the side wall of the base 1.

[0036] In the specific manufacturing process, the operator can manufacture the base 1, terminal 2, and brush 3 separately. Three different raw materials can be used in this manufacturing step. For example, the brush 3 can be made of a softer material, while the terminal 2 can be made of a material with higher hardness. Increasing the hardness of the terminal 2 allows it to withstand external forces, making it easy to insert into the PCB board and thus improving the stability of the encoder. After manufacturing, the operator can first fix the terminal 2 to the base 1. In this embodiment, the fixing method between the terminal 2 and the base 1 is not limited. Then, the operator can rivet the terminal 2 and the brush 3 together. In this embodiment, at least two rivets are used for fixing to prevent the brush 3 from rotating relative to the terminal 2.

[0037] Furthermore, the base 1 is provided with an annular flange 5, and the terminal 2 corresponding to the position of the annular flange 5 is provided with a clearance hole 4; specifically, a number of terminals 2 are located in the middle position as terminal 2-1, the terminals 2 are arranged at intervals, and the clearance hole 4 is used to avoid the annular flange 5.

[0038] Specifically, the terminals 2 are arranged at intervals to ensure multi-channel and reliable signal transmission; the clearance hole 4 of terminal 2 cooperates with the annular flange 5 in the base 1 to accurately position the terminal 2 and avoid assembly deviation.

[0039] In this embodiment, a fixing groove is provided on the side wall of the base 1, the terminal 2 passes through the fixing groove, and the terminal 2 is fixedly connected to the groove wall of the fixing groove. A bearing groove 6 is provided in the base 1, and the bearing groove 6 communicates with the fixing groove. The bearing groove 6 is horizontally arranged, so that the terminal 2 located in the base 1 is installed in the bearing groove 6. Furthermore, the brush 3 includes a connecting part 31 and an inclined part 32. The connecting part 31 is horizontally arranged, and the connecting part 31 is fixedly connected to the inclined part 32. The connecting part 31 is riveted to the terminal 2, and the riveting point between the connecting part 31 and the terminal 2 is located in the fixing groove.

[0040] Specifically, the connection design between the bearing groove 6 and the fixing groove optimizes the positioning and support of the terminal 2, improving assembly accuracy and structural stability; the horizontal setting of the brush 3 connecting part 31 and the riveting fit with the terminal 2 ensure the reliability of signal transmission, while the inclined part 32 facilitates flexible contact with the turntable 10; the riveting point is located in the fixing groove, further enhancing the connection strength, reducing loosening caused by vibration or external force, and extending service life, making it suitable for scenarios with high precision and durability requirements.

[0041] Example 2:

[0042] The structure of this embodiment is the same as that of embodiment 1, except that:

[0043] The terminals include a switch terminal 201 and a signal terminal 202. The switch terminal 201 and the signal terminal 202 are designed separately. The signal terminal 202 is riveted to the brush 3. Specifically, the switch terminal 201 and the signal terminal 202 are respectively fixed on both sides of the base 1.

[0044] Example 3:

[0045] This application also discloses an encoder. It is worth noting that the encoder in this embodiment includes, but is not limited to, a rotary encoder and an incremental encoder. Specifically, it includes a turntable assembly, a housing 7, a spring 8, and any of the terminal split structures in the above embodiments. The base 1 of the terminal split structure is connected to the housing 7, and the base 1 of the terminal split structure is rotatably connected to the turntable assembly. The brush 3 of the terminal split structure contacts the turntable assembly. Further, the turntable assembly includes a rotating shaft 9 and a turntable 10. The rotating shaft 9 is inserted into the turntable 10, and the rotating shaft 9 can drive the turntable 10 to rotate. The brush 3 of the terminal split structure contacts the turntable 10.

[0046] The assembly process of this application is as follows: First, the rotating shaft 9 of the turntable assembly is inserted into the turntable 10 and installed onto the base 1, so that the rotating shaft 9 and the base 1 are rotatably connected. At the same time, it is ensured that the inclined part 32 of the brush 3 is in contact with the surface of the turntable 10. Then, the spring 8 is assembled into the base 1 to provide necessary elastic support. Finally, the base 1 with the split terminal structure is movably connected to the housing 7. During use, the rotating shaft 9 is driven by external force to rotate the turntable 10. The brush 3 reads the rotation signal through contact with the turntable 10 and converts it into an electrical signal, which is transmitted to the external system through the terminal 2, thereby realizing the measurement of position, speed or direction. In this application, the split design allows the base 1, terminal 2 and brush 3 to be manufactured with different materials, improving durability and contact reliability. The cooperation between the bearing groove 6 and the fixing groove and the riveting between the brush 3 and the terminal 2 enhance the structural stability and reduce the risk of assembly deviation and signal interruption. The insertion design of the rotating shaft 9 and the turntable 10 facilitates installation and maintenance. The overall structure performs well in high-precision and harsh environments.

[0047] In this embodiment, a bushing 11 is fitted over the rotating shaft 9, and a cover 18 is fixedly connected to the bushing 11. In this embodiment, the cover 18 and the bushing 11 are integrally formed, the cover 18 is fixedly connected to the base 1, and the cover 18 is snapped into the housing 7. A positioning post 12 is provided inside the cover 18, and a positioning hole 13 is provided on the spring piece 8. The positioning hole 13 is fitted onto the positioning post 12. Furthermore, two square through slots 14 are provided at both ends of the cover 18, and a triangular protrusion 15 is provided on the side wall of the base 1. The side wall 71 of the housing 7 is snapped into the square through slots 14, and a through hole 16 is provided on the side wall 71 of the housing 7. The through hole 16 is snapped into the triangular protrusion 15. The bottom end of the side wall 71 of the housing 7 extends towards the rotating shaft 9 to form a fixing block 17. The fixing block 17 abuts against the bottom end of the base 1, and there are four fixing blocks 17.

[0048] During assembly, the first step is to fit the bushing 11 onto the outside of the rotating shaft 9 and fix the cover 18 to the base 1. In this embodiment, the cover 18 and the base 1 can be bonded together. It is worth noting that the positioning hole 13 of the spring piece 8 is first inserted into the positioning post 12 inside the cover 18 to complete the positioning of the spring piece 8. The second step is to achieve a stable connection between the cover 18, the base 1 and the housing 7 by engaging the square through grooves 14 and triangular protrusions 15 at both ends of the cover 18 with the through holes 16 on the side wall 71 of the housing 7. Specifically, the operator aligns the side wall 71 of the housing 7 with the square through groove 14, and then puts the housing 7 down from top to bottom, so that the side wall 71 of the housing 7 engages with the square through groove 14, and at the same time, the through hole 16 engages with the triangular protrusion 15, further stabilizing the housing 7. The third step is to abut the four fixing blocks 17 at the bottom of the side wall 71 of the housing 7 with the bottom of the base 1 to enhance the overall support.

[0049] During use, the rotating shaft 9 drives the turntable 10 to move. The brush 3 contacts the turntable 10 to generate an electrical signal, which is output through the terminal 2. The snap-fit ​​structure between the cover 18 and the housing 7, as well as the positioning design of the spring piece 8, ensures smooth rotation and accurate signal reading. The square through-slot 14 and side wall 71 of the cover 18 and the housing 7 snap-fit ​​together, and the snap-fit ​​design of the triangular protrusion 15 and through hole 16 improves the connection strength and assembly accuracy, preventing loosening. The cooperation between the positioning post 12 and the positioning hole 13 ensures the stability of the spring piece 8 and optimizes the elastic support effect. The four fixing blocks 17 further strengthen the connection between the base 1 and the housing 7, improve the durability and vibration resistance of the overall structure, and are suitable for high stability and long-term use scenarios.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A terminal split structure, characterized by comprising: The utility model provides a terminal split type structure, including base (1) and a plurality of terminal (2) and a plurality of brush (3) with different metal materials, a plurality of terminal (2) are fixedly connected with base (1), and one end of a plurality of brush (3) is riveted with the terminal (2) outside base (1).

2. The terminal according to claim 1, wherein The base (1) is provided with an annular flange (5), and the terminal (2) corresponding to the position of the annular flange (5) is provided with a position avoiding hole (4).

3. The terminal according to claim 1, wherein The sidewall of the base (1) is provided with a fixing groove, the terminal (2) passes through the fixing groove, and the terminal (2) is fixedly connected with the groove wall of the fixing groove; the base (1) is provided with a bearing groove (6) inside, the bearing groove (6) is communicated with the fixing groove, and the terminal (2) located in the base (1) is installed in the bearing groove (6).

4. The terminal according to claim 3, wherein The brush (3) includes a connecting portion (31) and an inclined portion (32), the connecting portion (31) is horizontally arranged, the connecting portion (31) is fixedly connected with the inclined portion (32), the connecting portion (31) is riveted with the terminal (2), and the riveting position of the connecting portion (31) and the terminal (2) is located in the fixing groove.

5. The terminal according to claim 1, wherein The terminal includes a switch terminal portion (201) and a signal terminal portion (202), the switch terminal portion (201) and the signal terminal portion (202) are separately designed, and the signal terminal portion (202) is riveted with the brush (3).

6. An encoder, characterized by The utility model provides a terminal split type structure, including base (1) and a plurality of terminal (2) and a plurality of brush (3) with different metal materials, a plurality of terminal (2) are fixedly connected with base (1), and one end of a plurality of brush (3) is riveted with the terminal (2) outside base (1).

7. An encoder according to claim 6, characterized in that The rotary disc assembly includes a rotating shaft (9) and a rotary disc (10), the rotating shaft (9) is inserted with the rotary disc (10), the rotating shaft (9) can drive the rotary disc (10) to rotate, and the brush (3) of the terminal split type structure is in contact with the rotary disc (10).

8. The encoder of claim 7, wherein, The rotating shaft (9) is provided with a shaft sleeve (11), the shaft sleeve (11) is fixedly connected with a cover body (18), the cover body (18) is fixedly connected with the base (1), the cover body (18) is provided with a positioning column (12) inside, the spring piece (8) is provided with a positioning hole (13), and the positioning hole (13) is sleeved on the positioning column (12).

9. The encoder of claim 8, wherein, Two square through grooves (14) are formed at two ends of the cover body (18), a triangular protrusion (15) is arranged on the sidewall of the base (1), the sidewall (71) of the shell (7) is clamped with the square through groove (14), the sidewall (71) of the shell (7) is provided with a through hole (16), and the through hole (16) is clamped with the triangular protrusion (15).

10. The encoder of claim 7, wherein, The sidewall (71) of the shell (7) extends to a fixed block (17) at the bottom end of the rotating shaft (9), the fixed block (17) abuts against the bottom end of the base (1), and the number of the fixed block (17) is four.

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