Hard circuit board of flat oscillating motor

A vibration motor and circuit board technology, applied in printed circuit parts, electromechanical devices, electrical components, etc., can solve problems such as resistance changes and defective products, and achieve the effect of reducing the difficulty of process manufacturing and stabilizing mass production.

Inactive Publication Date: 2008-08-20
干方飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] However, no matter how these three solutions are improved, one fact cannot be avoided: in fact, the thickness of the carbon film resistor (101B) will not exceed 0.08mm
[0023] Printing carbon film resistors (101B) not only needs to adjust the formula of the paste, but also strictly control the printing area and thickness of the paste, because the carbon film resistors (101B) with a thickness of 0.08 mm have a resistance The value should be controlled wi

Method used

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  • Hard circuit board of flat oscillating motor
  • Hard circuit board of flat oscillating motor
  • Hard circuit board of flat oscillating motor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example 1

[0049] The hard circuit board (201) of the present invention includes: epoxy layer (104), conductive layer (103), insulating layer (105), carbon film resistor (101B) layer; said insulating layer (105) is in two conductive layers The middle of the layer (103); the conductive layer (103) is located inside the epoxy layer (104) and is connected to the two conductive layers (103) through a metal hole perpendicular to the rigid circuit board (201); One end of the conductive layer (103) is connected to the coils (106A) and (106B) through pads, and the other end is connected to the commutator (102) to form a complete circuit; the carbon film resistor (101B) layer is in a single layer of conductive The middle of the line of the layer (103) has at least a strip shape, and the height of the carbon film resistor (101B) layer is greater than the thickness of the hard circuit board (201). As shown in Figure 14.

[0050] It can be seen in FIG. 12 that the carbon film resistor...

Example Embodiment

[0057] Example 2

[0058] The rest of this embodiment is basically the same as the previous embodiment, except that the carbon film resistor (101B) of this embodiment is covered with an epoxy layer (104), which is beneficial to adapt the carbon film resistor (101B) to Different stressful environments. This also requires each company to make adjustments according to its own production process. As shown in Figure 15.

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Abstract

The invention provides a hard circuit board of a flat type motor, which includes: epoxy layer, conducting layer, insulation layer, carbon film resistive layer; said carbon film resistive layer highness is greater than the hard circuit board thickness. Because carbon film resistive layer is designed located in same side of the flat type vibrating motor rotor coil, and is in middle of oscillator opposite and two coils, carbon film resistive layer highness is not limited by the hard circuit board, carbon film resistance with low resistance value can be used and manufacturing technique difficulty is reduced, is favorable for stability and large-scale production.

Description

Technical field [0001] The invention relates to a hard circuit board, in particular to a hard circuit board with a flat vibrating motor anti-electromagnetic interference. Background technique [0002] The miniaturization and ultra-thinning of mobile phones is an inevitable trend of market development, which is a severe challenge for mobile phone parts manufacturers; especially the vibration motors used for reminder functions on mobile phones, such as the current flat vibration motors of mobile phones The minimum thickness has reached only 2 mm, and each part is measured in microns, and the hard circuit board (also called H-PCB) in the flat motor is the first to suffer. [0003] As shown in Figure 1, this flat vibrating motor includes: a lower casing; a central shaft on the lower casing, a flexible circuit board, electric brushes, and magnetic steel. Comprised of the above parts is the stator assembly (204) known as the flat motor. Rotatable with respect to these fixed stat...

Claims

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Application Information

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IPC IPC(8): H05K1/02H05K1/16H02K11/00H02K11/028
Inventor 干方飞
Owner 干方飞
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