JP3005568U - "Shape memory alloy and vias series mounting functional structure" - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A function to finely adjust the variation in the force generated by the shape memory alloy is provided, and the drive unit for the shape memory alloy and bias can be specified and moved in a narrow space. It can be used for moving an object, and even if the loads of a moving object are increased, the structure itself can be used together. It is also an object of the present invention to simplify product assembly, improve the production yield of shape memory alloys as much as possible, and reduce costs. [Structure] A shape memory alloy 2 and a bias 1 are formed such that a movable object is sandwiched in a quadratic direction or in a thickness direction, and a functional device for locking a pitch hole 8 of a pitch hole jig 7 and inserting / removing a pin is provided. With the provision, a series mounting function structure that finely adjusts the generated force of the shape memory alloy and the loads of the movable object is provided. As described above, the drive unit can be applied to various products by the structure that solves the object and the problem, and thus is used in many industrial fields.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The serial mounting function structure of the present invention is used as a driving unit for opening and closing the inside of a ventilation device for a window and an opening related to a house, or an opening related to a device. It is also used as a heat dissipation device inside electrical equipment, as well as a mechanical drive that moves and operates arbitrary objects.

[0002]

[Prior art]

 As the name implies, shape memory alloys are alloys that can memorize shapes, and copper alloys (Cu) and Ni / Ti alloys are known as alloys that utilize the phenomenon of memorizing shapes. Compressed coil springs are generally produced in copper-based products, but many engineers have difficulty in designing due to problems with durability due to material factors. Also, Ni / Ti compression coil springs are used in a part of the industry, but since it is difficult for the driving part itself to have a mounting function structure for fine adjustment, the operating temperature range (change temperature range is It was unsuitable for use in strict requirements (small). Therefore, Ni / Ti-based tension coil springs will be used. However, when attempting to use them in locations where the operating temperature range is severe, the force of shape memory alloy generation and the bias force must be carefully selected. Product yields for shape memory alloys and bias are very poor and immeasurable. Therefore, it cannot be used in places where the temperature range is strict, and few are put into practical use, and it is often used in devices that can support a wide temperature range. However, in terms of shape memory alloy specifications, rather, there are the most demanded places where the operating temperature range is narrow, so the development of a drive unit that takes advantage of the characteristics of the shape memory alloy itself was desired.

In order to facilitate understanding of the above, the characteristics of the shape memory alloy and the current production state will be outlined. Many are known about shape memory alloys (only this section is general), but the shape memory effect and superelasticity of shape memory alloys are characterized by being significantly affected by heat treatment and processing. Is. Therefore, even for materials with the same composition, if the metallurgy history and heat treatment temperature are slightly different, the shape recovery rate is slightly different, and if the heat cycle of heating and cooling is repeated, the characteristics of the shape memory alloy change. Come on. Therefore, in the future, it will be necessary to clarify the relationship between heat treatment and processing conditions and shape memory and superelastic properties for alloys of each composition, and property changes in the process of use to establish the reliability of shape memory alloys in the future. Is a production technology issue.

As described above, the generated force, which is also a characteristic of the shape memory alloy, tends to have a large variation. Therefore, in order to use it in the drive part relation, a bias must be set for each generated force of the shape memory alloy. I won't. If so, the same number of biases as the shape memory alloy was needed. In addition, since it does not have a function structure that allows fine adjustment, even if the shape memory alloy stores an arbitrary shape recovery temperature, the balance between the generated force of the shape memory alloy and the various loads of the object operated by the bias force is maintained. This was not possible, and the shape recovery of the shape memory alloy was inaccurate. Therefore, when using shape memory alloy, fine adjustment function technology has not been established, so even if there is a demand for a functional product with a narrow operating temperature range at high temperature and low temperature, it cannot be commercialized and hinders development. Was becoming. Furthermore, since the yield of shape memory alloys was also extremely bad, it was essential to develop a mounting function structure that enables use of most shape memory alloys.

[0005] Therefore, in order to solve the problems of the shape memory alloy, it has been reached in the process of research and development, but "Japanese Patent Application No. 62-223590 Ventilator" and "Practical Application No. Two products of "shape memory alloy component parts" have been devised, so we filed an application.

[0006]

[Problems to be Solved by the Invention]

 However, the two cases mentioned above were not suitable for using the internal mechanism, which is a narrow part, because the drive part of the mounting function structure is large. Therefore, an object of the present invention is to reduce the size of the driving part, which is the mounting function structure of the shape memory alloy and the bias, and to reduce the shape memory alloy in the narrow part of the ventilation device internal structure or other product narrow part. It was to make effective use of bias. Then, the force generated by the shape memory alloy and the bias force had to be a finely adjustable structure that could function in a well-balanced manner even if the load of the movable shield plate and the movable object increased. Furthermore, even in the fine adjustment function, it was necessary to use only one kind of bias as long as variations in the generated force of the shape memory alloy were possible. As described above, it is an object to provide a means for solving these problems, which mainly uses shape memory alloys.

[0007]

[Means for Solving Problems]

  Therefore, the serial mounting function structure of the present invention is as described above.

In order to solve the above problem, as a result of trial and error research and development, the range of the generated force was investigated for each production of the shape memory alloy, and the tendency of the generated force was grasped. On the other hand, by calculating the various loads of a movable shield plate or movable object of any size, and taking into consideration the relationship between the variations in the generated force of the shape memory alloy and the various loads, the bias force value in the finely adjustable range Was determined, and a plurality of pitch holes were provided in the pitch hole jig based on the obtained bias force numerical values in the finely adjustable range. Also, the pitch hole jig must be designed on the side opposite to the shape memory alloy because it is necessary to consider the measures to be taken when the above-mentioned various loads increase and to enable design specifications in a narrow area. Selected. As mentioned above, since the pitch hole jig is mounted on the side opposite to the shape memory alloy, the bias is also located on the side opposite to the shape memory alloy, and the shape memory alloy and bias are movable shield plates. Alternatively, it forms horizontally on both sides of a movable object. In order to enable the shape memory alloy and the bias to operate in the formation, a space slightly larger than the outer diameters of the shape memory alloy and the bias should be secured, and the specification in the narrow portion was made possible. Therefore, the shape memory alloy and the bias are in a series mounting function structure formed by sandwiching the movable shield plate or the movable object in the rectangular direction or the thickness direction.

Series mounting function structure In this series mounting function structure, the shape memory alloy and the bias are formed with hooks at both ends, respectively, and the shape memory alloy and the bias are kept with a constant pulling force. It is installed in the closed state. As described above, the shape memory alloy and the bias are mounted on the movable shield plate or the movable object separately on the left and right sides with the rectangular direction or the thickness direction sandwiched therebetween. A pulling action occurs. The shield plate or the movable object that moves due to the action moves back and forth and left and right. In addition, the mechanism that moves back and forth and left and right moves left and right when a movable shield plate or a movable object is sandwiched in the rectangular direction, and moves back and forth when it sandwiches the thickness direction. Furthermore, when various loads increase in the rectangular direction, the serial mounting function structure remains unchanged, but if the shape memory alloy and bias are paired, two or more pairs are mounted in parallel. Also, when various loads increase in the thickness direction specification, if the shape memory alloy and the bias are paired, three or more pairs are mounted in parallel, and the shape memory alloy and the bias are attached. The numbers are different.

Series mounting functional structure in the rectangular direction When the shape memory alloy and the bias are sandwiched in the rectangular direction in the series mounting functional structure, the movable shield plate or the movable object moves left and right, but the shape memory alloy in the formation The one-sided hook is fixed to a movable shield plate or a locking pin provided at an arbitrary position of the main body in which the movable object is incorporated. The other hook is fixed to a movable shield plate or a locking pin fitted to the rectangular end of the movable object. The bias is on the side opposite to the shape memory alloy and is fixed to the movable shield plate or the locking pin fitted to the rectangular end of the movable object, and the other hook is provided on the main body. It is fixed by a locking pin that is inserted into and removed from the pitch hole jig. With the above configuration, the shape memory alloy and the bias are usually mounted as a pair, but when the load on the movable shield plate or the movable object increases, two or more pairs of the shape memory alloy and the bias are mounted in parallel. To be done.

It has been already described that the shape-memory alloy and the bias move forward and backward when the movable shield plate or the movable object is sandwiched in the thickness direction of the movable object. Is as follows. One side hook of shape memory alloy is fixed by a locking pin that is fitted to a fixing bracket provided at an arbitrary position of the main body, and the other side hook is a movable shield plate or a movable object. It is fixed to the locking pins provided on the connecting parts that are fastened to the left and right ends of the. Further, since the bias is placed on the side opposite to the shape memory alloy, the hook of the bias is locked to the locking pin fitted to the opposite side of the connecting part, and the hook on the other side is provided on the main body. It is fixed by a locking pin that inserts into and removes from the pitch hole of the pitch hole jig. Since two pairs are installed in the above state, they can be moved back and forth.The connecting parts are also placed in at least two places on the left and right with the thickness of the movable shield plate or the movable object sandwiched between them, as described above. It is fastened and doubles as a link between the shape memory alloy and the bias, and also acts as a power on the movable shield plate or movable object by the generated force and the bias force of the shape memory alloy. Two pairs of shape memory alloy and bias are usually provided, but when the load of the movable shield plate or movable object increases, three or more pairs are mounted in parallel.

Fine adjustment with serial mounting function structure Shape memory alloy and bias are described above.

As described above, it is mounted in a state in which a constant pulling force is maintained. When the temperature is lowered in this state, the movable shield plate or the movable object acts to move to the partition wall side, and when the force for generating the shape memory alloy is minimized, it comes into close contact with the partition wall. When the temperature rises, the movable shield plate or the movable object acts to move to an arbitrary interval from the partition wall, and the widest interval is maintained when the generated force of the shape memory alloy reaches the maximum. However, if the force generated by the shape memory alloy is unbalanced, the shape of the movable shield plate or the movable object will not be properly restored even if the temperature reaches the memorized temperature, and the predetermined distance from the partition wall will not be satisfied. Poor ventilation and the inadequate sealing due to the lack of close contact with the vented partition walls will cause problems. Therefore, a plurality of pitch holes provided in the pitch hole jig is provided with a functional structure in which fine adjustment is performed by the locking pin that is inserted and removed. When the force generated by the shape memory alloy is large, the locking pin that is inserted and removed moves the pitch hole in and out of the partition wall, and when the force generated by the shape memory alloy is small, the locking pin is on the side opposite to the partition wall. Finely adjust the balance by inserting and removing. Therefore, it is possible to correspond to a plurality of shape memory alloys with one kind of bias force. As described above, the adjusting function can be performed, but the present invention is not necessarily limited to the pitch hole jig, and if it also serves as a substitute for the pitch hole jig, it may be finely structured by a gear type or screw type functional structure. It can be adjusted.

[0012]

[Action]

 The serial mounting function structure of the present invention is

Since the fine adjustment can be performed by the means described in the above, it becomes possible to use most of the shape memory alloys produced in a certain number of steps, the production yield is dramatically improved, and the cost is reduced. It also has a great influence on. In addition, the characteristics of shape memory alloys can be used more efficiently and accurately, and it is possible to mount even in narrow spaces, and the design specifications are relatively simple, which gives momentum to commercialization. And

As already mentioned in the above, since a plurality of shape memory alloys can be handled by one kind of bias, the number of kinds of biases can be reduced and the management of both shape memory alloys can be simplified, so that it can be assembled into a product. Significant work improvement is planned. Furthermore, since temperature control can be performed appropriately, the evaluation of shape memory alloys is greatly improved, which will contribute greatly to the spread of shape memory alloys.

Hereinafter, based on the drawings, the serial mounting function structure of the present invention will be described with some examples, but the exemplification is for the purpose of description, and the inclusion and extension of the concept of the invention are not limited.

【Example】

 The perspective view of FIG. 1 is an example of the exploded view of the product installed in the window ventilation device in the state of the serial installation function structure, and will be described with reference to the drawing. The solid line diagram of the movable shield plate 20 of this ventilation device is formed when the temperature rises and the shape memory metal alloy 2 has an arbitrary temperature. The configuration is such that the shape memory alloy 2 is fitted to the locking pin 6 provided at an arbitrary position of the main body 9 and the locking pin 5 fixedly fitted to an arbitrary position of the right end portion of the movable shield plate 20. The hooks 13 of the shape memory alloy 2 are fixed to each of them. On the other hand, the bias 1 is mounted on the opposite side to the above, and moves with the locking pin 3 for fine adjustment while inserting / removing the pitch hole 8 of the pitch hole jig 7 provided at an arbitrary position of the main body 9. The hooks 12 of the bias 1 are fixed to the locking pins 4 which are fitted and fixed at arbitrary positions on the left end portion of the shield plate 20. It shows that the movable shield plate 20 moves in this state, and the opening 10 of the main body 9 and the opening of the movable shield plate 20 coincide with each other so that ventilation is performed through the ventilation hole 22. Also, the dotted line diagram of the movable shield plate 20 'shows that the temperature has dropped and the moving formation has been performed. In this formation, the hook 13 'of the shape memory alloy 2'is fixed to the lock pin 6 provided at an arbitrary position of the main body 9 and the lock pin 5'provided at the end of the movable shield plate 20'. To be done. On the other hand, the bias pin 1'is mounted on the opposite side of the shape memory alloy 2 ', and the hook 12' of the bias pin 1'is fitted and fixed to the end of the movable shield plate 20 '. The hook 12 'on the other side is fixed to the locking pin 3 for fine adjustment while inserting / removing the pitch hole 8 of the pitch hole jig 7 provided at the end of the main body 9. . Therefore, the openings 11 ′ of the movable shield plate 20 ′ and the openings 10 of the main body 9 alternate to block the ventilation. As described above, the shape memory alloy and the bias are built in the window ventilation device in a series-installed function structure, so that when the temperature changes, they pull each other and open and close. As for the assembly procedure, the pitch hole jig 7 is fixed at an arbitrary position with a screw 15, the locking pins 4 and 5 are fitted and attached to a movable shield plate, and then inserted into the main body groove 23 from the locking pin 6 side. Next, the engagement pin 6 is fitted and attached at an arbitrary position on the end of the main body, and the hooks of the shape memory alloy 2 are engaged with the engagement pins 5 and 6, respectively. One side hook of the bias 1 is locked to the locking pin 4, and one hook is locked to the positioned locking pin 3. The front panel 16 is inserted into the groove 21 of the main body 9, the lids 14 and 14 'are fixed by screws, the insect net 18 is attached from the inside of the front panel 16, and the opening 17 of the front panel 16 is temperature-sensing by the shape memory alloy. It is provided to make it easier.

FIG. 2 is a detailed front view of the pitch hole jig 7 alone and a front view of the semi-finished product. The front view of the semi-finished product is a front view of the semi-finished product in which the front panel 16 of FIG. 1 is not inserted into the groove 21 of the main body 9, and AA ′ is a sectional view as seen in the direction of the arrow. The width of BB 'is usually about 16 mm, but the maximum is about 20 mm from the current condition of fitting standards.

The perspective view of FIG. 3 is a perspective view of the state in which the bias 1 and the shape memory alloy 2 are installed on the pitch hole jig 7 and the movable shield plate 20.

The perspective view of FIG. 4 is an example of being installed inside a wall, which is considered to be effective for room ventilation and measures against dew condensation inside the wall. This is a description of the case where the serial mounting function structure is used in parallel with the aeration device. Ventilation that flows from the front opening 24 to the opening 25 of the upper panel through the opening 27 formed in the partition wall 30 of the main body 28, and allows the movable object 31 to move back and forth due to temperature change, thereby enabling ventilation. You can shut it off. In this formation, the movable object 31 is clamped and clamped by the connecting parts 32 mounted at two positions, and is placed on the holding table 35. In this state, the hook 13 of the shape memory alloy 2 is fixed by the locking pin 37 fitted to the fixing metal fitting 36 provided at an arbitrary position of the main body 28, and one hook is engaged with the connecting part 32. It is secured by a stop pin 34 (Fig. 5). Further, since the bias 1 is mounted on the opposite side of the shape memory alloy 2, one hook 12 of the bias 1 is fixed to the locking pin 33 on the opposite side of the above-mentioned connecting part 32. The other hook 12 is fixed by a locking pin 33 'that is inserted into and removed from the pitch hole 8 of the pitch hole jig 7 provided at an arbitrary position of the main body 28, and the pair of mounting states are installed in parallel. Has been done. In the above-mentioned state, the shape memory alloy 2 recovers its shape as the temperature rises, so that the force generated when the shape is recovered causes the movable object 31 and the base 1 to be pulled, thereby enabling ventilation. In addition, as the temperature decreases, the shape recovery force of the shape memory alloy 2 declines and the force generated becomes smaller. The object 31 acts to move to the partition wall 30 side, and when the generated force of the shape memory alloy 2 is the smallest, the movable object 31 moves to the movable object 31 '(Fig. 5) and comes into close contact therewith, and the ventilation is blocked. .

FIG. 5 is a cross-sectional view taken along the arrow direction from AA ′ in FIG. 4 and a top view of the AA ′ cross-sectional view seen from above. The sliding support jig 35 is a support for the movable object 31, and the animal body 38 indicated by a dotted line shows a state in which the movable object 31 moves and is in close contact with the partition wall 30.

[0018]

【The invention's effect】

 In the serial mounting function structure of the present invention, it has been already described that the generated force and various loads of the shape memory alloy can be finely adjusted by engaging and withdrawing the pin by locking the pitch hole of the pitch hole jig.

Even if the series mounting function structure is specified in parallel as in the specification structure of (1), it is possible to average the generated force of the shape memory alloy, so that the movable object can be moved back and forth in parallel. , It has the effect of properly adjusting the ventilation effect. In addition, even if various loads are increased, it is possible to increase the number of attachments with the series mounting function structure, which has the same effect as described above. And

In the parallel mounting function structure, the resin actuator wrapping the shape memory alloy and the bias is required, but the series mounting function structure of the present invention makes it unnecessary to manufacture a die for the actuator. The design cost is also unnecessary. Furthermore, since the serial mounting function structure itself can be mounted in parallel and the work of incorporating it in the mounting function structure can be simplified, the cost of the entire product can be greatly reduced. Therefore, since the serial mounting function structure of the present invention can be used in a narrow space, it can be used in a wide range of industrial fields such as the equipment industry, the electric industry, and the housing industry. Is.

[0019]

[Brief description of drawings]

Fig. 1, Fig. 2, Fig. 3 related 1,1 '……………………………………………………………………………………………………………………………………………………………………………………………… ………… Shape memory alloy tension spring 13,13 ′ …………………… Shape memory alloy hook 3, 4, 5, 6 ……………… Stopping pin 7 ………………………… ………… Pitch hole jig 8 ……………………………… Pitch hole 9 ……………………………… Main body 10 …………………………… Opening 16 ………………………………… Front panel 20 ……………………………… Movable shield plate 21 ……………………………… Groove 22 ………………… ………… Ventilation hole 23 ……………………………… Main body groove Related to Fig. 4 and Fig. 27 27 ……………………………… Opening 27 ′ …………………… ………… Insertion hole 30 ……………………………… Partition wall 31 ……………………………… Movable object opening 32 ……………………………… Connection part 33 , 33 ', 34, 37 ………… Locking pin 35 ……………………………… Retaining base 36 ……………………………… Fixing bracket

[Procedure amendment]

[Submission date] June 9, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

[FIG. 1] Perspective view of the structure for serial mounting 1,1 ′ ………… Vias 2,2 ′ ………… Shape memory alloy 3,4,5,6 ………… Locking pin 7 …… ……………… Pitch hole jig 8 …………………… Pitch hole 9 …………………… Main body 10 …………………… Opening 12,12'13,13 ′ ………… Hook 16 ………………………… Front panel 20 …………………… Movable shield plate 21 …………………… Groove 22 …………………… Ventilation hole

[Figure 2] Front view of semi-finished product

FIG. 3 is a front view of a pitch hole jig and a perspective view in which a shape memory alloy and a bias are installed on a shield plate movable with the pitch hole jig.

[Fig. 4] Perspective view of using serial installation function structure in parallel 30 …………………… Partition wall 31 ……………… Movable object 32 ……………… Connection parts 33, 33 ′, 34,37 ′ ………… Locking pin 35 …………………… Holder base 36 …………………… Fixing metal fitting

FIG. 5 is a top view of the AA ′ sectional view and the AA ′ sectional view.

Claims (5)

[Scope of utility model registration request] 1. A NiTi alloy-based shape memory alloy tension spring (hereinafter, shape memory alloy) and a tension bias spring (hereinafter, "bias") sandwiching a movable shield plate or a movable object in the longitudinal direction or the thickness direction. The pin consists of a pitch hole that holds the pitch hole of the jig, and the pin is inserted and removed to fine-tune the force generated by the shape memory alloy and the movable shield plate or movable object load and frictional resistance (various loads). This is a series-installed functional structure characterized by having a functional device for activating. 2. The pitch hole jig structure according to claim 1, wherein a plurality of bias positioning pitch holes are formed. 3. The fine adjustment function structure according to claim 1, wherein the generation force of a plurality of shape memory alloys and the movable shield plate or loads of a movable object are finely adjusted by one kind of bias force. 4. The series mounting functional structure according to claim 1, wherein two or more pairs can be mounted in parallel as a functional structure. 5. The structure according to claim 3, wherein the function structure for fine adjustment can be provided by a gear type or a screw type.