Waterproof and shockproof encoder

Abstract

The application relates to the technical field of encoders, in particular to a waterproof and shockproof encoder which comprises a driving structure, a PCB board and a connector, the driving structure comprises a control module for controlling a motor and a driving shell for protecting the control module, the PCB board is used for connecting the driving structure, and the connector is used for connecting an external power supply; wherein the driving structure is further provided with a first glue layer for protecting the control module, the control module is connected to the PCB board; the first glue layer is wrapped outside the control module and connected to the PCB board; the driving shell is installed outside the control module and connected to the PCB board; one end of the connector is connected to the PCB board, and the other end is connected to the external power supply to supply power to the PCB board. The scheme adopts a double-protection structure design, achieves the effects of improving the connection stability of the control module, enhancing the waterproofness and shock resistance of the encoder and prolonging the service life of the encoder.

Description

Technical Field

[0001] This utility model belongs to the technical field of encoders, and in particular relates to a waterproof and shockproof encoder. Background Technology

[0002] Encoders are the core feedback element of modern motor drive and control systems, and are widely used in industrial automation equipment (such as robot joints, CNC machine tool spindles, and conveyor belt drives), electric / hybrid vehicles (traction motors and power steering motors), renewable energy (wind turbine pitch / yaw), elevator traction machines, compressors, and other scenarios. Their core function is to measure the angular position, rotational speed, and acceleration of the motor rotor in real time and accurately, and convert this information into electrical signals to feed back to the controller. The controller uses these feedback signals to achieve precise closed-loop control, including precise torque control, speed regulation, position positioning, and complex motion trajectory planning.

[0003] Existing encoders are mostly used in conjunction with motors, and are easily affected by motor vibration over a long period of time, which can cause the encoder to loosen and affect its stable operation. Therefore, this utility model proposes a new solution to the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof and shockproof encoder. It adopts a dual-protection structural design, which improves the connection stability of the control module, enhances the waterproofness and shock resistance of the encoder, and extends the service life of the encoder.

[0005] Based on this, the present invention provides a waterproof and shockproof encoder, comprising: The drive structure includes a control module for controlling the motor and a drive housing for protecting the control module. PCB board, the PCB board is used for connecting the drive structure; Connectors are used to connect to an external power source; The drive structure also includes a first adhesive layer for protecting the control module, which is connected to the PCB board. The first adhesive layer wraps around the outside of the control module and is connected to the PCB board. The drive housing is installed on the outside of the control module and connected to the PCB board. One end of the connector is connected to the PCB board, and the other end is connected to an external power supply to power the PCB board.

[0006] The waterproof and shockproof encoder described above further includes a second adhesive layer for protecting the PCB board. The PCB board includes a first side and a second side for connection. The drive structure and connector are connected to the first side, and the encoder is connected to the motor through the second side. The second adhesive layer covers the first side and the second side.

[0007] In the waterproof and shockproof encoder described above, the second adhesive layer is one of epoxy resin adhesive, conformal adhesive, silicone resin adhesive, and UV adhesive.

[0008] As described above, the waterproof and shockproof encoder includes a connector comprising a connecting wire assembly for connecting to an external power source and a connecting plug for connecting to an external power source. One end of the connecting wire assembly is connected to the PCB board, and the other end is connected to the connecting plug.

[0009] As described above, a waterproof and shockproof encoder has a connector body and multiple connector pins for power connection. The multiple connector pins are equidistantly connected to the connector body for connection of the connector wire group.

[0010] As described above, in a waterproof and shockproof encoder, the connecting wire assembly has a first insulating layer and multiple connecting wires that correspond one-to-one with the connecting pins. The first insulating layer wraps around the outside of the multiple connecting wires, and the multiple connecting wires are connected to the multiple connecting pins for electrical conduction.

[0011] As described above, in a waterproof and shockproof encoder, the connector further includes a second insulating layer, and the connection point between the connecting wire group and the connecting plug is provided with a loose wire end. The second insulating layer is connected between the connecting plug and the first insulating layer to wrap the multiple connecting wires.

[0012] As described above, in a waterproof and shockproof encoder, the connector body is provided with a pin mounting cavity for protecting the connector pins, and multiple connector pins are equidistantly connected in the pin mounting cavity.

[0013] In the waterproof and shockproof encoder described above, the first adhesive layer is one of epoxy resin potting compound, silicone potting compound, polyurethane potting compound, and yellow glue.

[0014] As described above, in a waterproof and shockproof encoder, the opening of the drive housing is provided with multiple protruding housing connection parts, and the PCB board is provided with multiple housing mounting parts that correspond one-to-one with the housing connection parts. The housing connection parts are snapped into the housing mounting parts to connect the drive housing to the PCB board.

[0015] The beneficial effects of this utility model are as follows: This solution employs a dual-protection structural design. The drive structure includes a control module, a drive housing, and a first adhesive layer. The control module is housed within the drive housing, forming the first layer of mechanical protection to prevent damage from external impacts. The first adhesive layer wraps around the outside of the control module and connects to the PCB board, forming a second layer of flexible sealing protection. This firmly secures the control module to the PCB board, effectively preventing it from loosening during vibration. Furthermore, the first adhesive layer absorbs vibration energy and prevents moisture from penetrating the electrical connection areas of the control module. Finally, by connecting the connector to the PCB board, continuous power supply to the drive structure is achieved, ensuring smooth signal transmission. This results in improved connection stability of the control module, enhanced waterproofing and shock resistance of the encoder, and extended encoder lifespan. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 For the corresponding Figure 1 A structural diagram from another direction; Figure 3 For the corresponding Figure 2 A structural diagram from another direction; Figure 4 This is an exploded view of the structure of an embodiment of the present utility model; Figure 5 For the corresponding Figure 4 A schematic diagram of the structure from another direction.

[0018] In the diagram: 1-Drive structure, 11-Control module, 12-Drive housing, 121-Housing connection part, 122-Heat dissipation hole, 123-Connecting wire end hole; 2-PCB board, 21-First side, 22-Second side, 23-Housing mounting part; 3-Connector, 31-Connecting wire group, 311-First insulating layer, 312-Connecting wire, 32-Connecting plug, 321-Connecting plug body, 3211-Pin mounting cavity, 3212-First guide part, 3213-Second guide part, 322-Connecting pin, 33-Disconnecting wire end. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 5 As shown in the figure, this utility model embodiment provides a waterproof and shockproof encoder, including: a drive structure 1, a PCB board 2, and a connector 3. The drive structure 1 includes a control module 11 for controlling a motor and a drive housing 12 for protecting the control module 11. The PCB board 2 is used for connecting the drive structure 1, and the connector 3 is used for connecting to an external power source. The drive structure 1 also has a first adhesive layer for protecting the control module 11, and the control module 11 is connected to the PCB board 2. The first adhesive layer wraps around the outside of the control module 11 and is connected to the PCB board 2. The drive housing 12 is installed on the outside of the control module 11 and connected to the PCB board 2. One end of the connector 3 is connected to the PCB board 2, and the other end is connected to an external power source to supply power to the PCB board 2.

[0021] Preferably, the control module 11 is an electronic component that executes motor drive commands. It can be implemented using a surface-mount integrated circuit package and electrically connected to the PCB board 2 via surface-mount soldering technology. In this embodiment, a rigid-flexible composite structure is adopted. The drive housing 12 bears the main mechanical impact, and the first adhesive layer absorbs high-frequency vibration to achieve graded dissipation of vibration energy and enhance the encoder's shock resistance. Furthermore, the control module 11 forms a continuous sealing layer around the control module through the full bonding of the first adhesive layer to the PCB board 2, thereby enhancing the waterproof sealing of the control module 11 and extending the encoder's service life.

[0022] The present invention provides a waterproof and shockproof encoder, which further includes a second adhesive layer for protecting the PCB board 2. The PCB board 2 includes a first surface 21 and a second surface 22 for connection. The drive structure 1 and the connector 3 are connected to the first surface 21, and the encoder is connected to the motor through the second surface 22. The second adhesive layer covers the first surface 21 and the second surface 22.

[0023] Preferably, the encoder is connected to the motor through the positioning and mounting holes designed on the PCB board 2, so as to secure the encoder to the motor and enhance the connection stability of the structure; the second adhesive layer covers the first surface 21 and the second surface 22 to form a complete wrapping structure for the circuit on the PCB board 2. The second adhesive layer isolates the circuit on the PCB board 2 from external environmental factors and prevents moisture or dust from entering the internal circuit of the PCB board from the back.

[0024] Specifically, the second adhesive layer is one of epoxy resin adhesive, conformal adhesive, silicone resin adhesive, and UV adhesive.

[0025] Preferably, in this embodiment of the present invention, the second adhesive layer is coated with UV adhesive. UV adhesive can cure quickly under ultraviolet light irradiation, has good adhesion and transparency, and can form a tough protective film after curing, which plays a role in fixing, sealing and insulating the PCB board 2, so as to enhance the applicability of the encoder in different environments.

[0026] Furthermore, the connector 3 includes a connecting wire group 31 for connecting to an external power source and a connecting plug 32 for connecting to an external power source. One end of the connecting wire group 31 is connected to the PCB board 2, and the other end is connected to the connecting plug 32.

[0027] Preferably, by adopting the split connection structure design of the connecting wire group 31 and the connecting plug 32, the dynamic load is distributed to the two independent modules of the connecting wire group 31 and the connecting plug 32. The flexible characteristics of the connecting wire group 31 and the rigid structure of the connecting plug 32 complement each other, so that the connecting wire group 31 can absorb the energy generated by mechanical impact through the flexible transition structure, avoid the stress concentration phenomenon caused by rigid connection, and thus extend the service life of the encoder.

[0028] Furthermore, the connector 32 is provided with a connector body 321 and multiple connector pins 322 for connecting to power. The multiple connector pins 322 are equidistantly connected to the connector body 321 for the connection of the connector wire group 31.

[0029] Preferably, in this embodiment of the present invention, the connector 32 is injection molded from engineering plastic or thermosetting resin material for connection by the connector pins 322; the connector pins 322 are made of copper alloy with nickel plating, and are arranged at equal intervals on the connector 32 to form a standardized interface, so that each connector pin 322 bears uniform stress distribution under vibration environment, thereby enhancing the durability of the connector 32.

[0030] Furthermore, the connecting wire group 31 is provided with a first insulating layer 311 and multiple connecting wires 312 corresponding one-to-one with the connecting pins 322. The first insulating layer 311 wraps around the outside of the multiple connecting wires 312, and the multiple connecting wires 312 are connected to the multiple connecting pins 322 to conduct electricity.

[0031] Preferably, the structural design of the first insulating layer 311 wrapping around multiple connecting wires 312 can effectively prevent damage to the insulation layer of the connecting wires caused by inter-wire friction in a vibrating environment, avoid the risk of short circuits caused by vibration displacement of multiple connecting wires 312, and form an overall protective structure to resist external mechanical impact. The one-to-one connection method between multiple connecting wires 312 and connecting pins 322 ensures that each line can maintain stable contact and conduction under vibration through physical structural matching, preventing poor contact caused by vibration. In particular, the overall wrapping of multiple connecting wires 312 by the first insulating layer is different from single independent insulation, which reduces the probability of inter-wire insulation failure and strengthens the resistance to mechanical vibration by forming an integrated wire harness structure, effectively extending the service life of the connector 3.

[0032] Furthermore, the connector 3 also includes a second insulating layer, and a loose wire end 33 is provided at the connection between the connecting wire group 31 and the connecting plug 32. The second insulating layer is connected between the connecting plug 32 and the first insulating layer 311 to wrap the multiple connecting wires 312.

[0033] Preferably, the second insulating layer completely wraps the loose wire end 33 by heat shrink tubing shrinkage or injection molding, and the second insulating layer overlaps with the outer shell of the connector plug 32 and the edge of the first insulating layer, so that the connector 3 forms a continuous sealed structure to enhance the waterproof and anti-detachment performance of the connector 3; the second insulating layer can absorb vibration energy through material elasticity to prevent the connecting pin 322 and the connecting wire 312 from breaking due to stress concentration; at the same time, in a humid environment, the second insulating layer effectively blocks the path of water vapor to penetrate into the interior of the connector plug 32 along the loose wire end 33, effectively extending the service life of the connector 3.

[0034] Furthermore, the connector body 321 is provided with a pin mounting cavity 3211, a first guide portion 3212, and a second guide portion 3213 for protecting the connector pins 322. Multiple connector pins 322 are equidistantly connected in the pin mounting cavity 3211. The first guide portion 3212 and the second guide portion 3213 are arranged opposite to each other at the upper and lower ends of the connector body 321 to distinguish the insertion direction of the connector 32, thereby improving the connection convenience of the connector 3.

[0035] Preferably, the pin mounting cavity 3211 is a rigid cavity formed by injection molding of the connector body 321, and at the same time forms a pin fixing position for wrapping and fixing the connector pin 322 to reduce the direct impact of external vibration on the connector pin 322; at the same time, the structural design of multiple connector pins 322 being arranged at equal intervals reduces the possibility of short circuit caused by vibration contact between adjacent connector pins 322, and ensures that the connector pins 322 are precisely aligned with the socket position of the external power interface, thereby avoiding poor contact of the connector 3 due to misalignment of the connector pins 322. Furthermore, the first adhesive layer is one of epoxy resin potting compound, silicone potting compound, polyurethane potting compound, and yellow glue.

[0036] Preferably, in this embodiment of the present invention, the first adhesive layer is yellow glue, which is a fast-curing water-based adhesive with acrylate monomers as the main body. It is a soft, self-adhesive gel that forms a three-dimensional network structure through a rapid cross-linking reaction. Under the production line conditions of 20-30 pieces per minute, it ensures the packaging efficiency. Moreover, yellow glue has excellent insulation, moisture-proof, shockproof and thermal conductivity properties, which effectively enhances the waterproof sealing and shock resistance of the control module 11.

[0037] Furthermore, the opening of the drive housing 12 is provided with a plurality of protruding housing connection portions 121, and the PCB board 2 is provided with a plurality of housing mounting portions 23 corresponding one-to-one with the housing connection portions 121. The housing connection portions 121 are inserted into the housing mounting portions 23 to fasten the drive housing 12 onto the PCB board 2.

[0038] Preferably, the outer shell connecting part 121 and the drive outer shell 12 are integrally molded using injection molding to enhance the tensile strength of the outer shell connecting part 121; the outer shell mounting part 23 is a groove formed by stamping or CNC machining to ensure the one-to-one correspondence between the outer shell connecting part 121 and the outer shell mounting part 23; and the connection between the outer shell connecting part 121 and the outer shell mounting part 23 can adopt an interference fit or elastic snap-fit ​​structure design to use the frictional force generated by physical deformation to prevent the drive outer shell 12 from separating from the PCB board 2 during vibration, thereby enhancing the stability of the structural connection.

[0039] Preferably, the drive housing 12 is further provided with heat dissipation holes 122 for the control module 11 to dissipate heat. The heat dissipation holes 122 are located at the other end of the drive housing 12 relative to the housing connection part 121, so as to ensure that the control module 11 can dissipate heat in time during operation and improve the stability of the encoder during operation.

[0040] Preferably, the drive housing 12 is further provided with a connecting wire end hole 123, which allows the connecting wire group 31 to be connected into the drive housing 12, so as to ensure that the drive housing 12 can protect the solder joints of the connecting wire group 31 and the PCB board 2, prevent the solder joints from falling off when subjected to external impact, and extend the service life of the encoder.

[0041] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A waterproof and shockproof encoder, characterized in that, include: The drive structure (1) includes a control module (11) for controlling the motor and a drive housing (12) for protecting the control module (11). PCB board (2), the PCB board (2) is used for connection of the drive structure (1); Connector (3), the connector (3) is used to connect to an external power source; The drive structure (1) is further provided with a first adhesive layer for protecting the control module (11), which is connected to the PCB board (2). The first adhesive layer wraps around the outside of the control module (11) and is connected to the PCB board (2). The drive housing (12) is installed on the outside of the control module (11) and connected to the PCB board (2). One end of the connector (3) is connected to the PCB board (2), and the other end is connected to an external power supply to power the PCB board (2).

2. The waterproof and shockproof encoder according to claim 1, characterized in that, It also includes a second adhesive layer for protecting the PCB board (2), which includes a first side (21) and a second side (22) for connection. The drive structure (1) and the connector (3) are connected to the first side (21), and the encoder is connected to the motor through the second side (22). The second adhesive layer covers the first side (21) and the second side (22).

3. A waterproof and shockproof encoder according to claim 2, characterized in that, The second adhesive layer is one of epoxy resin adhesive, conformal adhesive, silicone resin adhesive, and UV adhesive.

4. A waterproof and shockproof encoder according to claim 1, characterized in that, The connector (3) includes a connecting wire group (31) for connecting to an external power source and a connecting plug (32) for connecting to an external power source. One end of the connecting wire group (31) is connected to the PCB board (2), and the other end is connected to the connecting plug (32).

5. A waterproof and shockproof encoder according to claim 4, characterized in that, The connector (32) is provided with a connector body (321) and multiple connector pins (322) for connecting to electricity. The multiple connector pins (322) are equidistantly connected to the connector body (321) for the connection of the connecting wire group (31).

6. A waterproof and shockproof encoder according to claim 5, characterized in that, The connecting wire group (31) is provided with a first insulating layer (311) and multiple connecting wires (312) that correspond one-to-one with the connecting pins (322). The first insulating layer (311) wraps around the multiple connecting wires (312), and the multiple connecting wires (312) are connected to the multiple connecting pins (322) to conduct electricity.

7. A waterproof and shockproof encoder according to claim 6, characterized in that, The connector (3) further includes a second insulating layer. The connection point between the connecting wire group (31) and the connecting plug (32) is provided with a loose wire end (33). The second insulating layer is connected between the connecting plug (32) and the first insulating layer (311) to wrap the multiple connecting wires (312).

8. A waterproof and shockproof encoder according to claim 5, characterized in that, The connector body (321) is provided with a pin mounting cavity (3211) for protecting the connector pins (322), and multiple connector pins (322) are equidistantly connected in the pin mounting cavity (3211).

9. A waterproof and shockproof encoder according to claim 1, characterized in that, The first adhesive layer is one of epoxy resin potting compound, silicone potting compound, polyurethane potting compound, and yellow glue.

10. A waterproof and shockproof encoder according to claim 1, characterized in that, The opening of the drive housing (12) is provided with a plurality of protruding housing connection parts (121), and the PCB board (2) is provided with a plurality of housing mounting parts (23) corresponding one-to-one with the housing connection parts (121). The housing connection parts (121) are inserted into the housing mounting parts (23) to connect the drive housing (12) to the PCB board (2).

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