CN2789911Y

CN2789911Y - Needle shape micro-contact device

Info

Publication number: CN2789911Y
Application number: CN 200520053906
Authority: CN
Inventors: 关伟杰; 李和兴; 何带福
Original assignee: Dongguan Centalic Electronic Testing Parts Co Ltd
Current assignee: Shenzhen Deli Hardware Fittings Co., Ltd.
Priority date: 2005-01-25
Filing date: 2005-01-25
Publication date: 2006-06-21
Anticipated expiration: 2015-01-25

Abstract

The utility model provides a needle-shaped micro touch device, and relates to a micro touch switch which is used on an electronic product. The utility model comprises a hollow needle-shaped casing. The top of the casing is provided with a movable sphere. The rear part of the sphere is provided with a spring supporter. Under the action of external force, the sphere can be pressed into the casing and can slide up and down. The rear part of the utility model can be connected with a switching circuit. When the sphere is pressed into the casing, a switching circuit of the rear part of the needle-shaped casing is touched to act. The utility model is suitable for sliding on a plane or a plane which has radian, and is also suitable for touch switches, etc. of touch points on a trigger connecting rod and a touch inductor. The sphere of the utility model can be easily pressed down after forced. The utility model has small friction force and a small coefficient of wear. Thus, the service life is prolonged.

Description

The miniature touch device of a kind of needle-like

Technical field

The utility model relates to the miniature tact switches that uses on the electronic product, the miniature touch device of particularly a kind of needle-like.

Background technology

Miniature tact switches on the existing electronic product mostly is independently needle tubing shape, can only bear unidirectional exerting pressure up and down, when the miniature tact switches pressurized is movable, touches the contact point on the electronic product downwards, shows or closes thereby reach; As the miniature touch device of the needle-like on the electronic notebook be the control display screen folding during to certain angle demonstration or close; Brightness of miniature tact switches control display screen curtain on the clamshell phone etc. for another example; But this kind miniature tact switches is because its syringe needle is a fixed structure, can not bear exerting pressure of the different strength of a plurality of directions preferably, and syringe needle is many and body is integrated, and the frictional force that its syringe needle bears is bigger, thereby causes wearing and tearing to influence useful life greatly.

Goal of the invention

The purpose of this utility model provides a kind ofly can bear a plurality of pressuring directions, reduce the frictional force and the coefficient of waste of contact surface effectively, is applicable on the plane of plane or band radian to use the miniature touch device of a kind of needle-like.

The utility model comprises the needle-like housing of a hollow, and its case top is provided with a movable spheroid, and the spheroid rear portion has spring to support, and spheroid can be pressed in the housing under being subjected to the external force effect, and slides up and down.

Needle-like housing described in the utility model rear portion can be connected to switching circuit, in spheroid is depressed housing, can touch the switching circuit action that needle-like housing rear portion is connected simultaneously.

Above-described switching circuit can be linked to each other and contacted with spheroid by the coupled contact head that presses down by lead, thus the opening or closing of control switch circuit.

Adopt technique scheme, because needle-like housing top is a movable spheroid, its curved surfaces can bear different directions to its dynamics that applies, when the curved surfaces of spheroid contacts with band radian contact-making surface, spheroid more easily is depressed under the support of spring in the housing, thereby has reduced the frictional force that is produced when the needle-like housing contacts with other objects.

When the spheroid rear portion is connected with switching circuit, after pressing down, its spheroid makes the switching circuit action, open or close effect thereby produce, also can connect another control circuit simultaneously.

The utility model is applicable to electronic product, the particularly slippage of the miniature touch device on the plane of plane or band radian, and the while also is applicable to the touch device of the contact point on trigger link, the contact induction device.

More easily press down after the utility model spheroid is stressed, its frictional force, the coefficient of waste are less, thereby have prolonged useful life.

Description of drawings

Fig. 1 is the utility model schematic appearance;

Fig. 2 is the generalized section of Fig. 1;

Fig. 3 is the utility model user mode schematic diagram;

Fig. 4 is the schematic appearance of another kind of execution mode;

Fig. 5 is the generalized section of Fig. 3.

Fig. 6 is the generalized section of another execution mode.

Embodiment

As shown in Figure 1 and Figure 2, the needle-like housing 1 of a hollow, its top is provided with the spheroid 4 of a slippage downwards, and spheroid 4 rear portions have spring 2 to support, and when spheroid 4 is pushed down in the housing 1 by external force, drive spring 2 retractions.

Shown in Figure 3, the utility model can be applicable on the accessory of cambered surface, the inner surface of hollow accessory 5 is the waveform cambered surface, rotary body 6 is arranged in the accessory 5, needle-like housing 1 stationary distribution is on rotary body 6, the spheroid 4 on needle-like housing 1 top contacts with the intrados of accessory 5, when rotary body 6 rotates, drive needle-like housing 1 and slide, because needle-like housing 1 top is a cambered surface spheroid 4, during the spheroid 4 of power effect outside along intrados, but spring 2 supporting sepheres 4 are made easy on and off and are slided, and the cambered surface on the spheroid 4 is easily along the intrados slippage of accessory 5, or is fixed on the intrados, thereby plays fixing rotary body 6 and prevent the effect of spheroid 4 surface abrasions.

As Fig. 4, shown in Figure 5, the top of needle-like housing 1 is provided with spheroid 4, and housing 1 rear portion is connected to switching circuit 3, and described switching circuit 3 is external by lead 31, is coated with conductor wire 33 in the lead 31, is provided with contact head 32 between spheroid 4 and the conductor wire 33;

During use, spheroid 4 pressurizeds move down with contact head 32 inconsistent, contact head 32 stressed downwards with lead 31 in conductor wire 33 touch mutually, touch switch circuit 3 moves simultaneously, makes switching circuit 3 be in the state of conducting or outage.

As shown in Figure 6, described switching circuit 3 external many leads 31, during use, spheroid 4 pressurizeds in the needle-like housing 1 move down, and touch mutually with the contact head of switching circuit 3 bottom of spheroid 4, thereby connect switching circuit 3 actions, after switching circuit 3 receives the information of spheroid 4 actions, promptly connect wherein lead 31, one of them control circuit of connection is opened or closed, reach and utilize the miniature touch device of needle-like to control being switched on or switched off of a plurality of control circuits.

The utility model is applicable to electronic product, the spheroid on its top, be suitable on the plane that slides against plane or band radian, its effect is that the static determinacy resistance with contact surface changes skid resistance into, reduced the friction between the contact-making surface, make the utility model drive swimmingly accessory along the plane or cambered surface carry out slippage, greatly reduce coefficient of friction, prolonged the useful life of accessory.

The utility model is by spheroid touch switch closing of circuit or disconnection, thereby the connection that also touches another electronic loop that is communicated with switching circuit reaches chain reaction and finishes an essential action.

The utility model can be applicable to as display screen on the laptop computer notepad, the miniature touch device of needle-like is arranged between display screen and the operation panel, when display screen downwards and when making stressed the pressing down of spheroid of the miniature touch device of needle-like, i.e. touch switch circuit simultaneously, display screen promptly are locked into and show or close.

Claims

1, the miniature touch device of a kind of needle-like, comprise a hollow needle-like housing (1), it is characterized in that: the top of needle-like housing (1) is provided with a movable spheroid (4), and spheroid (4) rear portion has spring (2) to support, spheroid (4) can be pressed under being subjected to the external force effect in the housing (1), slides up and down.

2, the miniature touch device of needle-like according to claim 1 is characterized in that: needle-like housing (1) rear portion is connected to switching circuit (3), and spheroid (4) is depressed in the housing (1), touches switching circuit (3) action at needle-like housing (1) rear portion simultaneously.

3, the miniature touch device of a kind of needle-like according to claim 2, it is characterized in that: described switching circuit (3) comprises lead (31), contact head (32), conductor wire (33), be coated with conductor wire (33) in the lead, contact head (32) is arranged at the rear portion of spheroid (4), move with contact head (32) inconsistent behind spheroid (4) pressurized, and make contact head (32) touch the interior conductor wire (33) of lead (31), make switching circuit (3) be in Chang Kai or closure state.