Micro motor grounding performance testing device

Abstract

The utility model discloses a micro motor grounding performance testing device, which comprises a control unit and a shell, and is characterized in that a tray and a cover plate are arranged on the top surface of the shell; a plurality of micro motor accommodating grooves for fixing micro motors are formed between the tray and the cover plate; a spring ejector pin for providing a detection signal is arranged at a position, corresponding to the micro motor, of the cover plate; a grounding pin connecting structure for detecting output current is arranged at the position, corresponding to a grounding pin of the micro motor, of the tray; and the control unit provides the detection signal for the micro motor in the tray and detects the output current of the grounding pin. According to the testing device for the grounding performance of the micro motor, the micro motor accommodating cavity is arranged between the cover plate and the tray to fix the micro motor and the grounding pin of the micro motor; the control unit provides the detection signal for the micro motor in the tray and detects the output current of the grounding pin; the grounding resistance of the micro motor is automatically detected, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the field of micro motor detection equipment, in particular to a micro motor grounding performance test device. Background Art

[0002] Conventional camera actuators include a lens focus actuator and an anti-shake mechanism. This typically requires a shielding cover positioned outside the actuator. For example, in the anti-shake mechanism, the shielding cover covers the structure, with output terminals located at its lower end. These terminals are welded to the optically stabilized optical system (OIS) base within the structure, grounding the shielding cover through the OIS base. In addition to protecting the internal mechanisms, the shielding cover also provides grounding, anti-static protection, and electromagnetic shielding, preventing damage to the motor from static electricity generated by signals and other frictional sources.

[0003] Therefore, before the anti-shake structure leaves the factory, a ground pin resistance test is required to verify that there are no desoldering or short circuit issues at the solder joints between the shield and the OIS base. Currently, ground pin resistance testing is done manually, which is inconvenient, inefficient, and lacks automation. Utility Model Content

[0004] The purpose of this utility model is to provide a micro motor grounding performance test device which has a novel and unique structure, is easy to use, and can conveniently detect the grounding status of the shielding cover; the specific technical solution is:

[0005] A micromotor grounding performance test device includes a control unit and a housing, wherein the top surface of the housing is provided with a tray and a cover plate; a plurality of micromotor accommodating slots for fixing the micromotor are provided between the tray and the cover plate; a spring ejector pin for providing a detection signal is provided at a position on the cover plate corresponding to the micromotor; a grounding pin connection structure for detecting the output current is provided at a position on the tray corresponding to the grounding pin of the micromotor; the control unit provides the detection signal to the micromotor in the tray and detects the output current of the grounding pin.

[0006] Furthermore, it also includes a motor assembly that drives the cover to flip and press the micro motor.

[0007] Furthermore, the cover plate is provided with a recessed micro-motor accommodating groove; the spring ejector pin is provided on the side wall of the micro-motor accommodating groove.

[0008] Furthermore, the control unit adopts a hysteresis power supply mode to provide the detection signal to the micro motor and detects the output current of the ground pin.

[0009] Furthermore, the control unit adopts a hysteresis power supply mechanism to provide the detection signal to the micro motor and detects the output current of the ground pin.

[0010] Furthermore, the hysteresis mechanism includes an air source, an air circuit, an on-off valve and an air-controlled switch.

[0011] Furthermore, the gas-controlled switch includes a switch seat, a conductive head and a reset spring; the conductive head is provided with a limiting structure to prevent the conductive head from falling off from the mounting hole.

[0012] Furthermore, it also includes a manipulator for transporting the micro motor.

[0013] The present invention provides a micro-motor grounding performance test device that fixes the micro-motor and its grounding pin by setting a micro-motor accommodating cavity between a cover plate and a tray; a control unit provides the detection signal to the micro-motor in the tray and detects the output current of the grounding pin; thus, automatic detection of the grounding resistance of the micro-motor is achieved, thereby improving detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the micro motor grounding performance test device of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0016] Figure 3 This is a partial structural diagram of the micro motor grounding performance test device of the utility model;

[0017] Figure 4 This is an enlarged view of part B;

[0018] Figure 5 This is a schematic diagram of the pneumatic jacking mechanism structure;

[0019] Figure 6 Schematic diagram of the structure of the clip assembly;

[0020] Figure 7 This is an enlarged view of part A;

[0021] Figure 8 This is a schematic diagram of the spring ejector structure.

[0022] In the figure: 1. Shell; 2. Cover; 3. Motor assembly; 4. Micro motor; 5. Robot; 6. Tray; 7. Air pipe; 8. Air-controlled switch; 81. Conductive head; 82. Upper switch seat; 83. Lower switch seat; 84. Air pipe mounting hole; 9. Clip assembly; 91. Clip; 92. Clip seat; 93. Wire; 10. Spring thimble assembly; 101. Conductive cap; 102. Conductive rod; 103. Conductive base. DETAILED DESCRIPTION

[0023] The present invention is described in more detail below using embodiments. The present invention can be embodied in a variety of forms and should not be construed as being limited to the exemplary embodiments described herein.

[0024] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Thus, the exemplary term "below" can encompass both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0025] like Figures 1 to 3 As shown, the micromotor grounding performance test device in this embodiment includes a control unit (not shown) and a housing 1. A tray 6 and a cover 2 are provided on the top surface of the housing. Several micromotors 4 are placed within the tray 6. The cover 2 is positioned on one side of the tray and can be flipped over to completely cover all micromotors within the tray 6. The housing 1, tray 6, and cover 2 are all made of insulating materials.

[0026] A plurality of micro-motor receiving grooves for fixing the micro-motors are provided between the tray and the cover plate; embedding the product into the receiving groove is conducive to reducing the height of the detection device, thereby reducing weight and cost.

[0027] A spring-loaded pin providing a detection signal is installed on the cover at the location corresponding to the micromotor; this facilitates reliable connection of the detection signal to the shielding cover of micromotor 4. A ground pin connection structure for detecting output current is installed on the tray at the location corresponding to the ground pin of the micromotor. The control unit provides the detection signal to the micromotor within the tray and detects the output current of the ground pin. The control unit utilizes a microcontroller-controlled circuit, and the circuits for providing voltage and measuring resistance employ existing technology and will not be further described here.

[0028] The cover can be flipped manually, or the motor assembly 3 can be used to drive the cover and compress the micromotor. The motor assembly includes a motor and a reduction mechanism, employing existing technology. Bearings can be used at both ends of the cover's hinge shaft to connect to the hinge seat, reducing noise generated during cover flipping and lowering power consumption.

[0029] like Figure 7 and Figure 8As shown, a recessed micro-motor accommodating groove can be provided in the cover plate; the spring ejector pin is provided on the side wall of the micro-motor accommodating groove. The axial direction of the spring ejector pin is parallel to the bottom end surface of the cover plate, which is beneficial to reducing the thickness of the cover plate. The spring ejector pin assembly 10 includes a conductive cap 101, a conductive rod 102 and a conductive base 103; and an ejector spring (not shown in the figure). The conductive cap 101 and the conductive rod 102 can be connected by snap-fitting or threaded fixing; the conductive rod and the conductive base can be integrally formed. The conductive cap 101 with a round head and a cone shape is used. When the cover plate presses the shielding cover, the longitudinal pressure is converted into a lateral thrust, pushing the conductive cap back into the mounting hole; and compressing the ejector spring (not shown in the figure) provided in the mounting hole. The conductive base prevents the conductive rod from falling out of the mounting hole.

[0030] In order to avoid sparks when the cover presses the product, the control unit adopts a delayed power supply method to provide the detection signal to the micro motor, that is, when pressing the product, the product and the spring ejector assembly are not energized; after pressing into place, power is turned on again.

[0031] The control unit may use a hysteresis power supply mechanism to provide the detection signal to the micro motor and detect the output current of the ground pin.

[0032] like Figure 4 and Figure 5 As shown, the hysteresis mechanism includes an air source (introduced from outside, not shown in the figure), an air circuit consisting of several air pipes 7, a switch valve (not shown in the figure) and an air-controlled switch 8. The air circuit control adopts existing technology and will not be described here in detail.

[0033] The pneumatic switch 8 comprises a switch base, a conductive head 81, and a return spring (not shown). The conductive head is provided with a retaining structure to prevent it from falling out of the mounting hole. The switch base can be divided into an upper switch base 82 and a lower switch base 83. The upper switch base with the conductive head is conveniently finished, while the lower switch base 83, which has the air pipe mounting hole 84, can only be rough-machined.

[0034] In order to further reduce manual intervention, a manipulator 5 for transporting the micro motor can be added. The manipulator 5 is an existing product on the market.

[0035] like Figure 6 As shown, to reduce deformation of the clip, the clip is configured as a composite structure, with an upper clip 91 and a lower clip seat 92. Both the clip 91 and the clip seat 92 are conductors, connected to the detection signal via a wire 93. A support groove is provided at the bottom of the clip to cooperate with the support column on the clip seat.

[0036] When in use, the motor assembly drives the hinge shaft to open the cover; the micro motor can be sucked up by the suction cup of the robot and placed in the receiving slot of the tray, and the grounding pin needs to be inserted into the clip; manual placement can also be used.

[0037] After the micro motor is placed, the cover is flipped over and the product is pressed in. The elastic ejector pin is pushed by the shielding cover and contacts the side wall of the shielding cover.

[0038] The control unit controls the on-off valve, pushing the pneumatic switch's conductive tip out and into contact with the clip, connecting the test circuit. Power is applied through the pneumatic switch; when connected, sparks are generated between the conductive tip and the clip, preventing damage to the shield. The control unit can perform resistance testing on each resistance measurement circuit in a rotating, time-sharing manner.

[0039] By using the micro motor grounding performance testing device in the utility model, efficiency and reliability are greatly improved.

[0040] The above examples are only used to illustrate the present invention. In addition, there are many different implementation methods. These implementation methods are all conceivable by those skilled in the art after understanding the concept of the present invention. Therefore, they are not listed here one by one.

Claims

1. A micro motor grounding performance test device, characterized in that: It includes a control unit and a shell, the top surface of the shell is provided with a tray and a cover; a plurality of micro-motor accommodating grooves for fixing the micro-motor are provided between the tray and the cover; a spring pin for providing a detection signal is provided at a position on the cover corresponding to the micro-motor; a ground pin connection structure for detecting the output current is provided at the ground pin of the tray corresponding to the micro-motor; the control unit provides the detection signal to the micro-motor in the tray and detects the output current of the ground pin.

2. The micro motor grounding performance testing device according to claim 1, wherein: It also includes a motor assembly for driving the cover to flip and press the micro motor.

3. The micro motor grounding performance testing device according to claim 1, wherein: The cover plate is provided with a recessed micro-motor accommodating groove; the spring ejector pin is arranged on the side wall of the micro-motor accommodating groove.

4. The micro motor grounding performance testing device according to claim 1, wherein: The control unit provides the detection signal to the micro motor in a delayed power supply manner and detects the output current of the ground pin.

5. The micro motor grounding performance testing device according to claim 4, wherein: The control unit uses a hysteresis power supply mechanism to provide the detection signal to the micro motor and detects the output current of the ground pin.

6. The micro motor grounding performance testing device according to claim 5, wherein: The hysteresis mechanism includes an air source, an air circuit, an on-off valve and an air-controlled switch.

7. The micro motor grounding performance testing device according to claim 6, wherein: The gas-controlled switch includes a switch seat, a conductive head and a reset spring; the conductive head is provided with a limiting structure to prevent the conductive head from falling off from the mounting hole.

8. The micro motor grounding performance testing device according to claim 1, wherein: Also included is a robot for transporting the micro motor.

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