CN201957333U

CN201957333U - Circuit base board capable of active heat dissipation

Info

Publication number: CN201957333U
Application number: CN2011200427583U
Authority: CN
Inventors: 李朝杯
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-21
Filing date: 2011-02-21
Publication date: 2011-08-31
Anticipated expiration: 2021-02-21

Abstract

The utility model discloses a circuit base board capable of active heat dissipation and comprises two power source poles and a base board which is arranged on a rotary shaft, wherein a first inner ring of a first ball bearing and a second inner ring of a second ball bearing are respectively sleeved on the rotary shaft; an insulation layer is arranged on the surface of the rotary shaft and at the second inner ring; the first outer ring of the first ball bearing and the second outer ring of the second ball bearing are respectively connected with the two power source poles, and the rotary shaft and the second inner ring of the second ball bearing are respectively connected with the two poles of the base board. The circuit base board has the advantages of good conductivity, long service life and better heat dissipation, and the operation safety is not influenced by the relative movement.

Description

But a kind of circuit substrate of active heat removal

Technical field

The utility model relates to a kind of circuit substrate.

Background technology

Circuit substrate is provided with multiple electronic component, and as chip, inductor, LED lamp etc., these electronic components can give out a large amount of heats when work, and power is big more, and the heat that distributes is just many more, has limited the lifting of electronic component power.Common radiating mode is passive radiating mode at present, promptly on each electronic component of circuit substrate, pass through to connect the heat sink of materials such as aluminium, pottery or plastics, the heat transferred that electronic component is given out by conduction to the heat sink to external radiation, increase area of dissipation, but the defective of this radiating mode is: to the material requirements height of heat sink, volume is bigger, and the area that takies circuit substrate is many, has the difficulty that interferes with each other when being provided with.In addition,, also occurred substrate is arranged on the machine shaft, thereby rotated the active heat removal substrate that drives substrate motion realization forced heat radiation by motor for improving radiating efficiency.This radiating mode can be forced substrate rotating, and radiating efficiency is higher.But owing to need power supply on the substrate, therefore the mode of generally taking brush exists the parts of relative motion with conductivity on electric power loop, cause the damage of parts easily because of friction, influences the reliability of its conduction.

Summary of the invention

But the purpose of this utility model provides a kind of circuit substrate of safe and reliable active heat removal.

Technical solution of the present utility model is: but a kind of circuit substrate of active heat removal, comprise two power supply utmost points and the substrate that is arranged in the rotating shaft, first interior ring of outer sheathed first ball bearing respectively of wherein said rotating shaft and the second interior ring of second ball bearing, in second, be provided with insulating barrier on the described rotating shaft surface at ring place, first outer shroud of first ball bearing is connected two power supply utmost points respectively with second outer shroud of second ball bearing, and the second interior ring of the described rotating shaft and second ball bearing is connected the two poles of the earth on the described substrate respectively.

The rotating shaft of electrode is fixed by two ball bearings, because ball bearing is by the outer shroud of conduction, ball and interior ring are formed, the outer shroud of two roller bearings links to each other with two electrodes respectively, so first ball bearing, rotating shaft, substrate, can form the electric power loop of a closure between second ball bearing, and because substrate and rotating shaft coaxial rotation, there is not relative motion between second outer shroud and the substrate yet, relative movement part is exactly a ball on the whole loop, and ball itself just has stronger anti-wear performance, therefore the electric conductivity in whole loop is good, can not influence conductivity because of friction, safe and reliable.

Described substrate periphery is provided with blade.Can accelerate the flowing velocity of air, further improve radiating effect.

Described blade and substrate are structure as a whole.By forming blade, thereby simplify manufacturing process, reduce cost in direct punching out of substrate periphery and bending.

The utility model has the advantages that: electric conductivity is good, and is reliable, can not influence its safety in utilization because of relative motion, long service life, and radiating effect is better.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment;

1, substrate, 2, rotating shaft, 3, first outer shroud, 4, first ball, ring in 5, first, 6, second outer shroud, 7, second ball, ring in 8, second, 9, insulating barrier, 10, blade, 11, positive pole, 12, negative pole, 13, elastic component, 14, conducting strip, 15, motor.

Embodiment

Embodiment:

Consult Fig. 1, but a kind of circuit substrate of active heat removal, it comprises substrate 1, motor 15, wherein the rotating shaft 2 of motor 15 is by being fixed by first ball bearing and second ball bearing, wherein first ball bearing is made up of ring 5 in first outer shroud 3, first ball 4 and second, second ball bearing is made up of ring 8 in second outer shroud 6, second ball 7 and second, and wherein ring 8 is set in outside the rotating shaft 2 in the first interior ring 5 and second, and rotating shaft 2 surfaces at ring 2 sheathed places are provided with insulating barrier 9 in second.Be provided with elastic component 13 between ring 8 and motor 15 housings in second, it is applied an elastic force, to overcome the axial endplay that rotating shaft 2 produces when moving.First outer shroud 3 connects anodal 11, the second outer shrouds 6 and connects negative pole 12, and elastic component 13 connects the conducting strip 14 of substrate 1.Substrate 1 neighboring is provided with the blade 10 of integrative-structure.

The rotating shaft 2 of motor is supported by two ball bearings, adds the elastic force buffering of elastic component 13, can effectively locate, and the play during rotation is also less.

Be delivered in the rotating shaft 2 through ring 5 in first outer shroud 3, first ball 4 and second from anodal 11 electric currents of introducing, be delivered to by rotating shaft 2 on the electrode of substrate 1, the loop current of substrate 1 is delivered on the negative pole 12 by conducting strip 14, elastic component 13, second interior ring 8, second ball 7, second outer shroud 6, forms closed loop.Encircling 8 in first in the ring 5 and second rotates with rotating shaft 2 respectively, ring 8 motion simultaneously in the elastic component 13 and second, do not have relative motion, rotating shaft 2 and substrate 1 coaxial rotation are in the whole loop, have only first ball 4 and second ball 7 to have relative motion, because ball is generally wearing piece, relative motion can not destroy its surface, and electric conductivity is good, and its life-span is long, uses safety and reliability.And the position relative fixed between other parts in the loop, friction does not produce.Because substrate rotating, its ambient air is forced to flow, and radiating effect is better.

Motor 1 is a direct current machine in the present embodiment, and it comprises stator and rotor portion, can adopt the conventional structure setting, and ball bearing also can use the ball bearing of existing conduction to make.On the substrate 1 electronic components such as LED lamp, inductor can be set.The entire circuit substrate can be provided with in the enclosure, and the housing of motor fixedly installs in the enclosure.Can offer the hole that is used to ventilate on the shell.

Above-listed detailed description is specifying at one of the utility model possible embodiments, this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1. but the circuit substrate of an active heat removal, comprise two power supply utmost points and the substrate that is arranged in the rotating shaft, it is characterized in that: first interior ring of outer sheathed first ball bearing respectively of wherein said rotating shaft and the second interior ring of second ball bearing, in second, be provided with insulating barrier on the described rotating shaft surface at ring place, first outer shroud of first ball bearing is connected two power supply utmost points respectively with second outer shroud of second ball bearing, and the second interior ring of the described rotating shaft and second ball bearing is connected the two poles of the earth on the described substrate respectively.

2. but the circuit substrate of a kind of active heat removal according to claim 1, it is characterized in that: described substrate periphery is provided with blade.

3. but the circuit substrate of a kind of active heat removal according to claim 2, it is characterized in that: described blade and substrate are structure as a whole.