Super-elastic memory alloy wire double-layer spiral interwoven self-monitoring adjustable buffering vibration reduction cushion

Abstract

The invention discloses a super-elastic memory alloy wire double-layer spiral interweaving self-monitoring adjustable buffering and vibration reduction cushion, and belongs to the field of buffering and vibration reduction cushions. Mainly comprises an outer frame, x transverse hyperelastic memory alloy wire groups, y longitudinal hyperelastic memory alloy wire groups, an inner frame, wire group shape maintaining steel cables, bolts, hyperelastic memory alloy wire fixing bolts, rubber foot pads and the like. The seat cushion can realize self-monitoring and rigidity regulation and control, further can integrate intelligent elements such as a sensor and a controller, realizes more complex self-adaptive regulation and intelligent control, has good buffering and damping effects, can regulate the rigidity according to actual requirements, and is strong in adaptability and high in practicability. Meanwhile, the upper and lower layers of super-elastic memory alloy wire interwoven bearing net surfaces are arranged, so that the air permeability of the cushion is improved, and the comfort level of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of cushioning and damping seat cushions, and relates to a self-monitoring and controllable cushioning and damping seat cushion formed by double-layer spiral interweaving of super-elastic memory alloy wires. BACKGROUND

[0002] For existing vehicle seat cushions, the cushioning and damping effect is generally achieved by the elastic material on the surface of the seat cushion, the internal elastic filling material, and the damping spring of the seat cushion damping assembly. The seat cushion damping assembly is connected to the basic frame and rack of the vehicle, and has poor cushioning and damping effect. Engineering vehicles and special vehicles often work in complex and rugged terrain, and are easily subjected to strong vibration and impact. When subjected to a large impact force, the stability of the seat cushion structure is easily affected, the ride comfort is low, and even the passengers are injured. In addition, the internal filling elastic material of the existing damping and cushioning seat cushion has poor air permeability, and long-time sitting causes discomfort to the passengers. Moreover, the internal filling elastic material lacks flexibility and cannot realize self-monitoring, and cannot change the stiffness in time to adapt to different working conditions according to different weights of passengers and working environments of the vehicle. Therefore, a new damping and cushioning seat cushion needs to be designed to solve these problems.

[0003] Shape memory alloy wires have been widely used in the fields of machinery, medicine, aerospace, etc. due to their unique memory effect, self-sensing, and super-elasticity, etc. However, the application of shape memory alloy wires in cushioning seat cushions is still rare. In combination with the above background, the present application utilizes the characteristics of shape memory alloy wires, and adopts double-layer spiral interweaving of super-elastic memory alloy wires to form a seat cushion, thereby inventing a new type of cushioning and damping seat cushion relying on the bearing of super-elastic memory alloy wires, which breaks through the structure of the traditional seat cushion combining elastic material and damping spring. The seat cushion can realize self-monitoring and stiffness adjustment, and can adapt to various working conditions through its own adjustment to provide more reliable, more conformable, and more comfortable support. Compared with the existing seat cushion, the seat cushion has excellent elasticity, air permeability, durability, fatigue resistance, impact resistance, bearing capacity, and shape recovery ability, and has self-sensing ability. Not only can it realize self-monitoring, but also can adjust the stiffness according to the needs, and can further integrate intelligent elements such as sensors and controllers to realize more complex adaptive adjustment and intelligent control, which has obvious innovation points. SUMMARY

[0004] In view of the existing problems, the present application aims to provide a super-elastic memory alloy wire double-layer spiral interweaving self-monitoring controllable cushioning and damping seat cushion, which can effectively solve the problems raised in the technical background.

[0005] To solve the above problems, the application adopts the following technical scheme: a super-elastic memory alloy wire double-layer spiral interwoven self-monitoring adjustable control cushion mainly consists of an outer frame, a horizontal super-elastic memory alloy wire group, a vertical super-elastic memory alloy wire group, an inner frame, a wire group shape maintaining steel cable, a bolt, and a super-elastic memory alloy wire fixing bolt.

[0006] As a further scheme of the application: the outer frame consists of a stud bolt, a nut, a joint, and a stud bolt, the stud bolt is connected with the joint, and is locked by the nut, and the like is sequentially connected to form the outer frame.

[0007] As a further scheme of the application: the joint has a threaded hole and a light hole on each of three surfaces, the threaded hole on the left surface and the light hole on the upper surface are used for cooperating with the stud bolt, the two threaded holes on the upper surface are used for cooperating with the inner frame, and the threaded hole on the front surface is used for connecting and fixing with a carrier seat.

[0008] As a further scheme of the application: the inner frame has a certain number of uniformly distributed small holes on the upper surface, which are used for penetrating the wire group shape maintaining steel cable to maintain the spiral shape of the super-elastic memory alloy wire, four large holes are used for cooperating with the super-elastic memory alloy wire fixing bolt, and the holes on the side are used for connecting and fixing with the outer frame.

[0009] As a further scheme of the application: the horizontal super-elastic memory alloy wire group and the vertical super-elastic memory alloy wire group are spirally wound on the outer frame and interwoven to form a double-layer bearing net surface.

[0010] As a further scheme of the application: the horizontal super-elastic memory alloy wire group and the vertical super-elastic memory alloy wire group consist of a protective sleeve and a super-elastic memory alloy wire, and the super-elastic memory alloy wire is penetrated in the protective sleeve to form the super-elastic memory alloy wire group.

[0011] As a further scheme of the application: the super-elastic memory alloy wire fixing bolt penetrates the hole on the inner frame matched therewith, a through hole is punched on the super-elastic memory alloy wire fixing bolt, the super-elastic shape memory alloy wire penetrates the through hole, and is locked and fixed on the inner frame by the nut, so that the fixing of the super-elastic memory alloy wire is completed, and the two ends of the super-elastic shape memory alloy wire can be connected with a data acquisition card and a power supply and the like to realize the intelligent monitoring and control of the cushion.

[0012] Compared with the prior art, the advantages of the present application are: (1) the superelasticity of the superelastic shape memory alloy wire is utilized, the deformation range is large, under the action of stress, the internal martensitic phase change occurs, high damping performance is generated, vibration energy is converted into internal energy, the effect of vibration damping is achieved, the cushion can withstand greater load and high intensity impact vibration. (2) the shape memory characteristics of the superelastic shape memory alloy wire are utilized, the cushion can deform and restore the original shape within a certain load range, the shape memory effect is good, the material utilization rate is high, the overall quality is light, the energy absorption efficiency is outstanding. (3) the self-sensing characteristics of the superelastic shape memory alloy wire are utilized, the deformation and resistance change have a good linear relationship, through detecting the resistance change, the force and deformation state of the cushion can be self-sensing monitored, and the superelastic shape memory alloy wire is powered to generate Joule heat to make it deform, which can realize self-regulation or self-adaptive adjustment of stiffness. (4) the design of the double-layer hollow woven bearing net surface can greatly increase the air permeability of the surface of the cushion and improve the comfort of the user. These advantages enable the cushion of the present application to adjust the stiffness according to the weight, sitting posture and working environment of the user, provide personalized, intelligent comfort and continuous reliable elastic support. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 : overall schematic view of the cushion

[0014] Figure 2 : schematic view of the outer frame

[0015] Figure 3 : schematic view of the double-headed stud

[0016] Figure 4 : schematic view of the joint and the joint section

[0017] Figure 5 : schematic view of the inner frame

[0018] Figure 6 : schematic view of the superelastic memory alloy wire group DETAILED DESCRIPTION

[0019] The present application will be further described below in conjunction with the drawings in the present application:

[0020] As shown in the accompanying drawings Figure 1As shown, this invention provides a self-monitoring adjustable cushioning and vibration damping seat cushion with double-layer spiral interwoven superelastic memory alloy wires. The main components are: an outer frame (1), a transverse superelastic memory alloy wire group (2), an inner frame (3), a wire group shape-maintaining steel cable (4), bolts (5), a longitudinal superelastic memory alloy wire group (6), and superelastic memory alloy wire fixing bolts (7); other components such as computers, data acquisition cards, DC power supplies, and wires are not shown in the figure. The inner frame (3) is fixed inside the outer frame (1) with bolts (5); the transverse superelastic memory alloy wire group (2) and the longitudinal superelastic memory alloy wire group (6) are spirally wound on the outer frame (1), and the beginning and end are fixed to the inner frame (3) with superelastic memory alloy wire fixing bolts (7). The spiral direction is maintained by the wire group shape-maintaining steel cable (4) to ensure that the direction will not be destroyed when bearing load.

[0021] As attached Figure 2 , 3 As shown in Figure 4, the outer frame (1) is composed of double-ended studs (1-1), nuts (1-2), connectors (1-3), and double-ended studs (1-4). The double-ended studs (1-1) and (1-4) are connected to the connectors (1-3) and locked with nuts (1-2). The outer frame (1) is formed by connecting them in this order. The connectors (1-3) are made of 45 steel. The ends of the double-ended studs (1-4) are connected to the threaded holes (1-32) of the two connectors (1-3) respectively and locked with nuts (1-2). After the ends of the double-ended studs (1-4) on the front and rear sides of the outer frame (1) are connected to the connectors (1-3), the double-ended studs (1-1) on the left and right sides are connected to the holes (1-35) of the connectors (1-3) respectively and locked with two nuts (1-2), thus forming the outer frame.

[0022] As attached Figure 1 , 4 As shown in Figure 5, the threaded holes (1-33) and (1-34) of the connector (1-3) match the holes (3-3) and (3-4) of the inner frame (3), and the inner frame (3) is fixed to the outer frame (1) by bolts (5); a certain number of evenly distributed small holes (3-1) are opened on the inner frame (3) for passing through the wire group shape maintaining steel cable (4) to maintain the spiral direction of the transverse superelastic memory alloy wire group (2) and the longitudinal superelastic memory alloy wire group (6); the holes (3-2) on the inner frame (3) are used to cooperate with the superelastic memory alloy wire fixing bolts (7) to fix the transverse superelastic memory alloy wire group (2) and the longitudinal superelastic memory alloy wire group (6) on the inner frame (3); the inner frame (3) is made of bakelite material, which has good insulation properties, meets the insulation requirements for energizing and monitoring the superelastic memory alloy wire, and the material also has high strength.

[0023] As attached Figure 1 , 6As shown, the transverse super-elastic memory alloy wire group (2) and the longitudinal super-elastic memory alloy wire group (6) are composed of a super-elastic memory alloy wire (2-1) and a protective sleeve (2-2), and the super-elastic memory alloy wire (2-1) is worn in the protective sleeve (2-2) to form the super-elastic memory alloy wire group. After the outer frame (1) is connected to the inner frame (3): first, the super-elastic memory alloy wire fixing bolt (7) is inserted into the hole (3-2) on the inner frame (3), then the super-elastic memory alloy wire (2-1) of the transverse super-elastic memory alloy wire group (2) is inserted into the through hole formed by the super-elastic memory alloy wire fixing bolt (7), and the nut is locked on the inner frame (3) to fix the starting end of the super-elastic memory alloy wire group, then the transverse super-elastic memory alloy wire group (2) is spirally wound on the outer frame; the second step is to fix the remaining end of the super-elastic memory alloy wire (2-1) as the end in the same way as the first step after winding is completed, and the whole fixing of the transverse super-elastic memory alloy wire group (2) is completed, and the longitudinal super-elastic memory alloy wire group (6) is the same, and the transverse and longitudinal super-elastic memory alloy wire groups are interlaced to form a bearing net surface. The elements such as wires, direct current power supply, acquisition card and sensor can be connected to the super-elastic memory alloy wire fixing bolt (7), so as to realize the monitoring and stiffness regulation of the seat cushion: the stress and deformation state of the seat cushion can be monitored by acquiring and analyzing the change of the resistance of the super-elastic memory alloy wire; by applying different voltages to the super-elastic memory alloy wire, the super-elastic memory alloy wire generates corresponding contraction, the winding force of the super-elastic memory alloy wire increases, and the stiffness of the bearing net surface increases, so as to realize the stiffness regulation of the seat cushion to adapt to the needs of different users and working conditions.

Claims

1. A self-monitoring and adjustable cushioning and vibration damping seat cushion made of super-elastic shape memory alloy wire double-layer spiral interwoven material, characterized in that: It is composed of an outer frame (1), a horizontal super-elastic memory alloy wire group (2), an inner frame (3), a wire group shape-keeping steel cable (4), a bolt (5), a vertical super-elastic memory alloy wire group (6), and a super-elastic memory alloy wire fixing bolt (7).

2. The super-elastic memory alloy wire double-layer helix interwoven self-monitoring controllable cushioning and damping seat cushion according to claim 1, characterized in that: The outer frame (1) is composed of a stud (1-1), a nut (1-2), a joint (1-3), and a stud (1-4). The stud (1-1) and the stud (1-4) are connected with the joint (1-3) and locked by the nut (1-2). In this way, the outer frame (1) is sequentially connected. The joint (1-3) is provided with threaded holes (1-31), (1-32), (1-33), (1-34), and a light hole (1-35). The threaded holes (1-32) and the light hole (1-35) are used for cooperating with the stud (1-1) and the stud (1-4), and the threaded holes (1-33) and (1-34) are used for cooperating with the inner frame (3). The threaded hole (1-31) is used for connecting and fixing the seat of the vehicle.

3. The super-elastic memory alloy wire double-layer helix interwoven self-monitoring controllable cushioning and damping seat cushion according to claim 1, characterized in that: The inner frame (3) is provided with uniformly distributed small holes (3-1) for passing through the wire group shape-keeping steel cable (4), a hole (3-2) for cooperating with the super-elastic memory alloy wire fixing bolt (7), and holes (3-3) and (3-4) for connecting and fixing the outer frame (1).

4. The super-elastic memory alloy wire double-layer helical interwoven self-monitoring controllable cushioning and damping seat cushion according to claim 1, characterized in that: The horizontal super-elastic memory alloy wire group (2) and the vertical super-elastic memory alloy wire group (6) are composed of a super-elastic memory alloy wire (2-1) and a protective sleeve (2-2). The super-elastic memory alloy wire (2-1) is inserted into the protective sleeve (2-2) to form a super-elastic memory alloy wire group. The super-elastic memory alloy wire fixing bolt (7) passes through the hole (3-2) of the inner frame (3) and is provided with a through hole. The super-elastic memory alloy wire (2-1) passes through the through hole and is locked by a nut, so as to fix the alloy wire on the inner frame (3). The horizontal super-elastic memory alloy wire group (2) and the vertical super-elastic memory alloy wire group (5) are spirally wound on the outer frame (1) and interwoven to form a double-layer bearing net surface. The two ends of the super-elastic memory alloy wire (2-1) can be connected with a data acquisition card and a power supply device to realize monitoring and control of the seat cushion.

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