CN204630472U

CN204630472U - Marmen

Info

Publication number: CN204630472U
Application number: CN201520337317.4U
Authority: CN
Inventors: 李岩; 李珍
Original assignee: Beihang University
Current assignee: Beihang University
Priority date: 2015-05-22
Filing date: 2015-05-22
Publication date: 2015-09-09
Anticipated expiration: 2025-05-22

Abstract

The utility model devises a kind of marmen, mainly comprises the sleeve of two special shapes, special-shaped pin and Ordinary Compression spring, and shape memory alloy spring, is connected to the Switching Power Supply at shape memory alloy spring two ends.Wherein two sleeves all have two grooves, and when Compress Spring is in compressive state, two sleeves are fixed by the position that pin is placed on groove.Shape memory alloy spring two ends are connected to the centre position of pin and the bottom of inner sleeve.Open Switching Power Supply, to shape memory alloy spring electrified regulation, when arriving phase point temperature, martensite reverse transformation occurs, spring contraction, pulls pin to move along groove, until move to the low order end of groove horizontal level, under the effect of the power of common spring, outer bush launches.The utility model provides one can use power supply, the driver utilizing the SME of marmem to drive, and what achieve that less mechanism can complete launches start.

Description

Marmen

Technical field

The utility model relates to a kind of driver, particularly relates to a kind of driving device made of shape-memory alloy.

Background technology

Driver miscellaneous is a lot, and driver is also extremely extensive in the application of all trades and professions, but traditional driver has hydraulic-driven, pneumatic actuation, motorized motions three kinds of modes, traditional driver is the action such as displacement or torsion by complicated Structure Transformation thus is externally done work, and the driving force of marmen derives from the inner phase transformation of alloy.Therefore the SME of marmem is applied to driver and greatly can simplifies structure, reduce quality and taken up space, merit/anharmonic ratio is large.

Summary of the invention

In order to solve the drives structure of legacy drive complexity, take larger volume, consume the problems such as more resource, the utility model provides a kind of transmission mechanism, the object that need launch, be separated can separate by this mechanism effectively, and does not take larger space.

The utility model solves the technical scheme that its technical problem adopts: have upper and lower two sleeves, sleeve there is respectively a pair shape be cross-vertical groove, a Compress Spring is fixed in inner sleeve, when Compress Spring is in compressive state, the position of the upper horizontal of groove can be fixed on a semiorbicular pin, now just two sleeves can be fixed, sleeve is not launched.At the middle part of lock ring shaped position, the bottom of inner sleeve has one to be with porose outstanding position, and one end of the shape memory alloy spring after stretching is fixed on the hole place bottom inner sleeve, and the other end is fixed on the middle part at the annular position of pin.The two ends of spring are connected to dc source.Work as opening power, when electric current is by shape memory alloy spring, shape memory alloy spring is now equivalent to a pure resistance, resistance generates heat under the effect of electric current, when temperature reaches phase transition temperature, marmem undergoes phase transition, and is the austenite of high temperature state by the martensite transfor mation of normal-temperature.Phase transition process brings the change of crystal structure, show macroscopic view, namely there is the change of shape, shape memory alloy spring shrinks, pin is pulled to be moved, when pin moves to the end points position of level trough along the groove of level, because spring has one to upward pressure to outer bush, pin can slide along vertical groove automatically.And the groove of outer bush reaches the bottom of guide pin bushing always, in open state, so pin does not have fixation to outer bush, outer bush can launch and come by the now elastic force change of spring.Outer bush can promote the object needing to be separated, to launch, and object is launched away rapidly.

The beneficial effects of the utility model are, comparatively simple structure can be utilized to complete required launching, the SME of marmem can be utilized to be directly used in driving simultaneously, simplify mechanism widely, and the energy requirement needed is minimum, does not need very large voltage to complete start.

Accompanying drawing explanation

Fig. 1 is package assembly schematic diagram (not comprising shape memory alloy spring) of the present utility model

Fig. 2 is the front view of outer sleeve

Fig. 3 is the top view of outer sleeve

Fig. 4 is the front view of inner sleeve

Fig. 5 is the top view of inner sleeve

Fig. 6 is the stereogram of pin

Fig. 7 is shape memory alloy spring front view

Fig. 8 is the front view of Compress Spring under normality

Fig. 9 is the top view of Compress Spring under normality

Detailed description of the invention

For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in figs 1-9, this driver contains upper and lower two sleeves, and the pin of a shape matching uniqueness, two springs, and one of them is the extension spring of Ti-Ni marmem filament winding, and another one is the Compress Spring of carbon spring steel wires coiling.As seen from Figure 9, Compress Spring two ends have turned to again a little circle respectively, and bolt can be utilized to be fixedly connected with upper and lower two sleeves by spring.If wanting the object driven directly to launch, the bottom of launching object can be made the shape of similar outer sleeve, now just not need the upper end of Compress Spring to be connected by bolt with object, but directly compressing, launch.

Fig. 2 and Fig. 4 can see groove, and the shape and size of groove are duplicate on inside and outside two sleeves.When spring is in compressive state, four grooves can be in parallel state, utilize the position of pin in figure 6 shown in 10 that two guide pin bushings are fixed.In Fig. 6, the position of in FIG 8 is placed in the position of 7, is straight line, does not offset, as shown in Figure 1 with the position of steady pin with at the stroke of later stage pin movement.

The two ends of shape memory alloy spring are separately fixed at a position, 1,2 two shown in Fig. 1, now shape memory alloy spring is in extended state, and connect upper conductor at memory alloy spring two ends, the two ends of wire are connected in Switching Power Supply, open switch, pass into direct current.Shape memory alloy spring is equivalent to a pure resistance, generate heat under the effect of electric current, but when temperature reaches phase transformation temperature points, there is reverse martensitic transformation, volume contraction, memory effect occurs, contraction becomes close winding spring, spring pulls pin to produce displacement, under the effect of the power of Compress Spring, can move quickly into the position of in Fig. 2 12 when pin moves to the position of in as Fig. 2 11.Now can block outer bush without any thing, outer bush can promote object and launch under the effect of the power of Compress Spring.

The utility model can utilize this mechanism to be flicked fast by object, decreases complicated transmission mechanism, efficiently utilizes the memory effect of marmem.Complete when utilizing less space and launch.

Above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed in protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should define with claim is as the criterion.

Claims

1. a marmen, it is characterized in that: mainly comprise inside and outside two sleeves and the special pin of shape and shape memory spring, common spring etc., common spring is connected on upper and lower two sleeves, pin fixes two sleeves, and shape memory alloy spring is connected between pin and inner sleeve.

2. marmen according to claim 1, it is characterized in that, utilize special-shaped pin to carry out the fixing of sleeve, utilize shape memory alloy spring to pull special-shaped pin to discharge common spring and reach release object, and the fixing and disengaging of the convenient pin of the design of the groove of sleeve.