Stretching device
By designing a tensile device that utilizes elastic structure and pressing structure, the problem of relying on complex equipment for the research on tensile performance of micro/nanoscale wires is solved, and simple and low-cost wire stretching is achieved, which expands the popularization of research.
Patent Information
- Application Number
- CN202422206288.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The tensile performance research of micro/nanoscale wires in the prior art relies on complex and expensive instruments and equipment, and the operation is cumbersome, which limits the popularization and in-depth research.
A stretching device is designed to utilize the synergistic effect of elastic structure and pressing structure to achieve stretching of wire through elastic deformation, simplifying the equipment structure and avoiding electronic control systems.
It realizes simple and low-cost stretching of micro/nano-scale wires, simplifies the operating process, reduces research costs, and expands the scope of research application.
Smart Images
Figure CN223154686U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of devices for testing micro-nano structures, and particularly relates to a stretching device. Background Art
[0002] With the continuous progress of technology, micro / nano-scale wire materials have shown broad application prospects in many fields such as electronics, biomedicine, energy storage, and sensing technology due to their unique physical and chemical properties. The tensile properties of micro / nano-scale wire materials are one of the important indicators for evaluating their application potential. Therefore, the research on their tensile properties is of great significance.
[0003] In the prior art, the research on the tensile properties of micro / nano-scale wire materials usually relies on precise instruments and equipment. These devices often have complex structures and cumbersome operations, and require professional technicians to operate, which not only increases the research cost but also limits the popularization and in-depth research.
[0004] Therefore, in view of the above technical problems, it is necessary to provide a new solution. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a stretching device with a simple structure and convenient operation, which can well realize the stretching of micro / nano-scale wire materials.
[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:
[0007] In the first aspect, the utility model provides a stretching device, which includes: a base body, an elastic structure, and a pressing structure; the elastic structure includes a first elastic member and a second elastic member arranged oppositely, the first elastic member and the second elastic member are arranged on the base body, a first fixing member is arranged on the first elastic member, and a second fixing member arranged oppositely to the first fixing member is arranged on the second elastic member; the pressing structure is connected to the first elastic member and the second elastic member; wherein, pressing the pressing structure can deform the first elastic member and the second elastic member, so that the first fixing member and the second fixing member approach each other; removing the pressing on the pressing structure, the first elastic member and the second elastic member can recover deformation, so that the first fixing member and the second fixing member move away from each other.
[0008] In one or more embodiments, the first elastic member includes a first connecting arm, a first elastic arm, and a second elastic arm, one end of the first elastic arm is connected to the first connecting arm, and the other end is connected to the base body; one end of the second elastic arm is connected to the first connecting arm, and the other end is connected to the pressing structure.
[0009] In one or more embodiments, the first elastic arm inclines towards the second elastic member, the second elastic arm inclines towards the opposite direction of the second elastic member, and the first elastic arm and the second elastic arm are respectively located on both sides of the first connecting arm.
[0010] In one or more embodiments, the first elastic arm and the second elastic arm are symmetrically arranged with respect to the axis of the first connecting arm.
[0011] In one or more embodiments, the included angle between the first elastic arm and the first connecting arm is 10° to 80°, and / or the included angle between the second elastic arm and the first connecting arm is 10° to 80°.
[0012] In one or more embodiments, the first elastic member includes at least two groups of mutually parallel first elastic arms, and / or the first elastic member includes at least two groups of mutually parallel second elastic arms.
[0013] In one or more embodiments, the second elastic member includes a second connecting arm, a third elastic arm and a fourth elastic arm. One end of the third elastic arm is connected to the second connecting arm, and the other end is connected to the base; one end of the fourth elastic arm is connected to the second connecting arm, and the other end is connected to the pressing structure.
[0014] In one or more embodiments, the first elastic member and the second elastic member are symmetrically arranged.
[0015] In one or more embodiments, a channel is formed between the first fixing member and the second fixing member, and the width of the channel is 5 to 100 μm.
[0016] In one or more embodiments, a groove is provided on the base, the elastic structure and the pressing structure are both arranged in the groove, and the elastic structure is located between the pressing structure and the bottom wall of the groove.
[0017] In one or more embodiments, the pressing structure includes a cross beam and a pressing portion. The cross beam is connected to the first elastic member and the second elastic member, and the pressing portion protrudes from the top of the cross beam.
[0018] In one or more embodiments, the pressing structure further includes connecting portions extending from both ends of the cross beam. The connecting portions connect the ends of the cross beam and the side walls of the groove, and the width of the connecting portions is smaller than the width of the cross beam.
[0019] Compared with the prior art, the stretching device provided by the present utility model realizes the stretching of wire materials through the elastic deformation of an elastic structure. This design utilizes the mechanical elastic recovery characteristics, avoiding a complex electronic control system and simplifying the device structure. Moreover, this stretching device is easy to operate and has a low design cost, and can be widely promoted and used. Brief Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 It is a schematic structural diagram of the stretching device in an embodiment of the present utility model;
[0022] Figure 2 It is a schematic diagram of the stretching device in an embodiment of the present utility model before the finite element analysis pressing;
[0023] Figure 3 It is a schematic diagram of the stretching device in an embodiment of the present utility model after the finite element analysis pressing.
[0024] Main Reference Numeral Description
[0025] 1 - Substrate, 11 - Groove, 111 - Bottom Wall, 112 - Side Wall, 2 - Elastic Structure, 21 - First Elastic Member, 211 - First Connecting Arm, 212 - First Elastic Arm, 213 - Second Elastic Arm, 22 - Second Elastic Member, 221 - Second Connecting Arm, 222 - Third Elastic Arm, 223 - Fourth Elastic Arm, 23 - First Fixing Member, 24 - Second Fixing Member, 3 - Pressing Structure, 31 - Cross Beam, 32 - Pressing Portion, 33 - Connecting Portion, 4 - Channel. Detailed Description of the Specific Embodiment
[0026] In order to enable those skilled in the art of this technology to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0027] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or variations thereof such as "comprises" or "comprising" shall be understood to include the stated element or component, without excluding other elements or other components.
[0028] With the rapid development of technology, micro / nano-scale wires (such as micro / nano-scale silicon wires) have shown broad application prospects in multiple fields due to their unique physical and chemical properties, including electronics, biomedicine, energy storage, and sensing technology, etc. However, there are many challenges in the research on the tensile properties of micro / nano-scale wires in the existing technology. The research usually relies on precise instruments and equipment, which are not only complex in structure and cumbersome in operation, but also costly, and have very high technical requirements for the experimental environment and operators. These factors severely limit the popularization and in-depth research on the tensile properties of micro / nano-scale wires, making it difficult to carry out and promote relevant research widely.
[0029] To solve the above technical problems, the present utility model provides a simple and easy-to-use and low-cost stretching device. Its core idea is to utilize the synergistic effect of the elastic structure and the pressing structure to achieve controllable stretching of micro / nano-scale wires. Specifically, the stretching of the wire is achieved through the elastic deformation of the elastic structure. This design utilizes the mechanical elastic recovery characteristics, avoiding complex electronic control systems and simplifying the device structure.
[0030] Please refer to Figure 1 As shown, the stretching device in an embodiment of the present utility model includes a base body 1, an elastic structure 2, and a pressing structure 3. The elastic structure 2 includes a first elastic member 21 and a second elastic member 22 arranged oppositely. The first elastic member 21 and the second elastic member 22 are provided on the base body 1. A first fixing member 23 is provided on the first elastic member 21, and a second fixing member 24 opposite to the first fixing member 23 is provided on the second elastic member 22. The pressing structure 3 is connected to the first elastic member 21 and the second elastic member 22.
[0031] Among them, pressing the pressing structure 3 can deform the first elastic member 21 and the second elastic member 22, so that the first fixing member 23 and the second fixing member 24 approach each other. Removing the pressing on the pressing structure 3, the first elastic member 21 and the second elastic member 22 can recover their deformation, so that the first fixing member 23 and the second fixing member 24 move away from each other.
[0032] The base body 1 is the basic structure of the entire stretching device, which provides a stable support platform for the elastic structure 2 and the pressing structure 3. The base body 1 can be made of durable materials such as SOI wafers, metals, or high-hardness plastics to ensure stability and durability during the stretching process. The design of the base body 1 can consider its size, shape, and weight to meet the requirements of different test environments.
[0033] The elastic structure 2 includes a first elastic member 21 and a second elastic member 22 which are oppositely arranged. The two elastic members are provided on the base body 1, and their materials and structural designs endow them with good elastic deformation ability to ensure reliability and repeatability during the stretching and releasing processes. The first fixing member 23 and the second fixing member 24 are respectively arranged on the first elastic member 21 and the second elastic member 22, and their function is to fix both ends of the to-be-stretched part of the micro / nano wire when the pressing structure 3 is pressed.
[0034] The pressing structure 3 is a component for the user to operate the elastic structure 2 to undergo elastic deformation, and it connects the first elastic member 21 and the second elastic member 22. By applying a pressing force to the pressing structure 3, the first elastic member 21 and the second elastic member 22 can be deformed. When the pressing structure 3 is pressed, the first elastic member 21 and the second elastic member 22 deform inward, causing the first fixing member 23 and the second fixing member 24 to approach each other. At this time, the pressing state can be maintained, and both ends of the to-be-stretched part of the wire are fixed to the first fixing member 23 and the second fixing member 24 through an adhesive. When the pressing structure 3 is released, the elastic members recover their deformation, the first fixing member 23 and the second fixing member 24 move away from each other, thereby stretching the wire and keeping the wire in a stretched state continuously.
[0035] In an exemplary embodiment, the first elastic member 21 includes a first connecting arm 211, a first elastic arm 212, and a second elastic arm 213. One end of the first elastic arm 212 is connected to the first connecting arm 211, and the other end is connected to the base body 1; one end of the second elastic arm 213 is connected to the first connecting arm 211, and the other end is connected to the pressing structure 3.
[0036] The first connecting arm 211 serves as the central part of the first elastic member 21. The first elastic arm 212 and the second elastic arm 213 are connected to both sides of the first connecting arm 211. The end close to the second elastic member 22 is connected to the first fixing member 23 to ensure the stability of the entire elastic structure 2. The first connecting arm 211 can be designed as a straight arm or a curved arm to adapt to different spatial layouts and operation requirements.
[0037] One end of the first elastic arm 212 is connected to the first connecting arm 211, and the other end is fixed to the base body 1. This design enables the first elastic arm 212 to deform when pressed, thereby driving the first fixing member 23 to move towards the second fixing member 24. One end of the second elastic arm 213 is also connected to the first connecting arm 211, and the other end is connected to the pressing structure 3. When the pressing structure 3 is pressed, the deformation of the second elastic arm 213 is transmitted to the first elastic arm 212.
[0038] The first connecting arm 211 serves as the central hub, and its cooperation with the first elastic arm 212 and the second elastic arm 213 ensures the coordinated operation of the entire elastic structure 2, enabling the pressing action to be effectively converted into the displacement of the first fixing member 23 towards the second fixing member 24.
[0039] Specifically, the first elastic arm 212 is inclined towards the second elastic member 22, the second elastic arm 213 is inclined towards the opposite direction of the second elastic member 22, and the first elastic arm 212 and the second elastic arm 213 are respectively located on both sides of the first connecting arm 211.
[0040] It can be understood that the inclination angles of the first elastic arm 212 and the second elastic arm 213 are key structural features, which jointly determine the deformation direction and force transmission efficiency of the elastic member. The first elastic arm 212 is inclined towards the second elastic member 22, and the second elastic arm 213 is inclined towards the opposite direction of the second elastic member 22. This design enables the first elastic arm 212 and the second elastic arm 213 to effectively transmit the force to the first fixing member 23 when the pressing structure 3 is activated, prompting it to move towards the second fixing member 24. The first elastic arm 212 and the second elastic arm 213 are respectively located on both sides of the first connecting arm 211. This layout provides a symmetric force transmission path, which helps to maintain the balance and stability of the entire structure during operation.
[0041] Furthermore, the first elastic arm 212 and the second elastic arm 213 are symmetrically arranged about the axis of the first connecting arm 211. The symmetrically arranged first elastic arm 212 and second elastic arm 213 ensure that during operation, the force transmission is uniform and balanced, enabling them to move with the same amplitude and direction when deforming. This balance helps to reduce structural stress concentration or deformation caused by uneven force distribution.
[0042] Specifically, the included angle between the first elastic arm 212 and the first connecting arm 211 is 10 - 80°, and / or the included angle between the second elastic arm 213 and the first connecting arm 211 is 10 - 80°. The design of the included angle determines the force transmission path and efficiency during the operation of the pressing structure 3. A smaller included angle can cause greater deformation of the first elastic arm 212 and the second elastic arm 213 when pressed; while a larger included angle results in smaller deformation when pressed, which helps to more precisely control the stretching amount.
[0043] Further, the first elastic member 21 includes at least two groups of first elastic arms 212 that are parallel to each other, and / or the first elastic member 21 includes at least two groups of second elastic arms 213 that are parallel to each other. Each group of elastic arms can be designed to have the same length and elastic coefficient to ensure consistency and balance during the operation. These elastic arms can be arranged side by side or arranged at specific intervals. The design of the group of parallel elastic arms can increase the overall rigidity of the structure, reduce bending or twisting during the clamping process, and thus improve the stability of the operation.
[0044] In an exemplary embodiment, the second elastic member 22 has similar structural features to the first elastic member 21. The second elastic member 22 includes a second connecting arm 221, a third elastic arm 222, and a fourth elastic arm 223. One end of the third elastic arm 222 is connected to the second connecting arm 221, and the other end is connected to the base body 1; one end of the fourth elastic arm 223 is connected to the second connecting arm 221, and the other end is connected to the pressing structure 3.
[0045] The second connecting arm 221, as the central component of the second elastic member 22, connects the third elastic arm 222, the fourth elastic arm 223, and the second fixing member 24, similar to the role of the first connecting arm 211 in the first elastic member 21, ensuring the effective transmission of force and the stability of the structure.
[0046] Specifically, the first elastic member 21 and the second elastic member 22 are symmetrically arranged on the base body 1, which can be completely mirror-symmetric or symmetric along a certain axis, depending on the placement direction of the wire and the specific requirements of the tensile test. The elastic arms inside each elastic member are also configured according to the symmetry principle to balance the force. The symmetrical design helps to reduce the offset of the wire or device caused by unbalanced force, ensuring that the wire is uniformly stretched along the predetermined direction during the test process.
[0047] In an exemplary embodiment, a channel 4 is formed between the first fixing member 23 and the second fixing member 24, and the width of the channel 4 is 5 - 100 μm. The presence of the channel 4 allows the first fixing member 23 and the second fixing member 24 to approach each other when pressing the pressing structure 3, and facilitates observing the deformation and fracture of the wire during the stretching process. The width of the channel 4 can be adjusted according to the diameter of the wire and the required clamping force. A smaller channel 4 is suitable for thinner wires, while a larger channel 4 is suitable for thicker wires.
[0048] In an exemplary embodiment, a groove 11 is provided on a substrate 1, and both an elastic structure 2 and a pressing structure 3 are disposed within the groove 11. The elastic structure 2 is located between the pressing structure 3 and the bottom wall 111 of the groove 11. The groove 11 can be designed as a rectangle, a circle, or any shape suitable for the elastic structure 2 and the pressing structure 3. Its size should be sufficient to accommodate these components and leave appropriate space for the operation of the components. The depth of the groove 11 can be determined according to the heights of the elastic structure 2 and the pressing structure 3 to ensure that the elastic structure 2 is located at a suitable position between the pressing structure 3 and the bottom wall 111 of the groove 11.
[0049] Specifically, the pressing structure 3 includes a cross beam 31 and a pressing portion 32. The cross beam 31 is connected to a first elastic member 21 and a second elastic member 22, and the pressing portion 32 protrudes from the top of the cross beam 31. The cross beam 31 can be designed as a straight rod or a shape with a certain curvature to adapt to different operating habits and spatial layouts. The material of the cross beam 31 should have sufficient strength and rigidity to ensure stability during the pressing process. The pressing portion 32 can protrude from the central position of the top of the cross beam 31, and the shape of the pressing portion 32 can be a semi - circle or other shapes to facilitate applying a pressing force to the cross beam 31.
[0050] Furthermore, the pressing structure 3 further includes connecting portions 33 extending from both ends of the cross beam 31. The connecting portions 33 connect the ends of the cross beam 31 and the side walls 112 of the groove 11, and the width of the connecting portions 33 is smaller than the width of the cross beam 31. The design of the connecting portions 33 provides additional elasticity, such that after pressing the pressing portion 32, the connecting portions 33 can deform and quickly recover after releasing the pressing portion 32, driving the cross beam 31 and the elastic structure 2 to reset. The connecting portions 33 connect the ends of the cross beam 31 to the side walls 112 of the groove 11, enhancing the stability of the entire pressing structure 3 and reducing shaking or displacement during the operation. The width of the connecting portions 33 being smaller than the width of the cross beam 31 helps to concentrate the force during pressing, improve the pressing efficiency, and avoid causing unnecessary stress on the side walls 112 of the groove 11.
[0051] Please refer to Figure 2 and Figure 3 as shown, which are schematic diagrams of strain before and after pressing during finite - element analysis of a stretching device in an embodiment of the present utility model. From Figure 2 and Figure 3 it can be seen that when pressing the pressing portion at the top of the stretching device along Figure 3After applying a displacement of 20 μm in the direction of the arrow, the channel of the stretching device decreases due to the decrease in the angle between the elastic arm and the connecting arm. After magnifying the simulation results, it is found that the channel is 50 μm in the original state and becomes 44.6 μm after applying the displacement. At this time, the maximum strain (ε) in the stretching device structure is only 0.24%, mainly concentrated in the top crossbeam and the elastic arm. The relatively small maximum strain can ensure that the stretching device will not be damaged and will remain stable under the strain state for a long time, thus completing the fixation of the wire on the fixing part.
[0052] In summary, the stretching device provided by the present utility model realizes the stretching of the wire through the elastic deformation of the elastic structure. This design utilizes the mechanical elastic recovery characteristics, avoids the complex electronic control system, and simplifies the device structure. Moreover, the stretching device is easy to operate and has a low design cost, and can be widely promoted and used.
[0053] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
[0054] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A stretching device, characterized in that, Comprising: A substrate; An elastic structure including a first elastic member and a second elastic member disposed opposite to each other. The first elastic member and the second elastic member are provided on the substrate. A first fixing member is provided on the first elastic member, and a second fixing member disposed opposite to the first fixing member is provided on the second elastic member; A pressing structure connected to the first elastic member and the second elastic member; Wherein, pressing the pressing structure can deform the first elastic member and the second elastic member so that the first fixing member and the second fixing member approach each other; Removing the pressing on the pressing structure, the first elastic member and the second elastic member can recover deformation so that the first fixing member and the second fixing member move away from each other.
2. The stretching device according to claim 1, characterized in that, The first elastic member includes a first connecting arm, a first elastic arm and a second elastic arm. One end of the first elastic arm is connected to the first connecting arm, and the other end is connected to the substrate; One end of the second elastic arm is connected to the first connecting arm, and the other end is connected to the pressing structure.
3. The stretching device according to claim 2, characterized in that, The first elastic arm is inclined towards the second elastic member, the second elastic arm is inclined in the opposite direction of the second elastic member, and the first elastic arm and the second elastic arm are respectively located on both sides of the first connecting arm.
4. The stretching device according to claim 3, wherein, The first elastic arm and the second elastic arm are symmetrically arranged about the axis of the first connecting arm.
5. The stretching device according to claim 2, wherein The included angle between the first elastic arm and the first connecting arm is 10 - 80°, and / or the included angle between the second elastic arm and the first connecting arm is 10 - 80°.
6. The stretching device according to claim 2, wherein, The first elastic member includes at least two groups of mutually parallel first elastic arms, and / or the first elastic member includes at least two groups of mutually parallel second elastic arms.
7. The stretching device according to any one of claims 1 to 6, characterized in that, The second elastic member includes a second connecting arm, a third elastic arm and a fourth elastic arm. One end of the third elastic arm is connected to the second connecting arm, and the other end is connected to the substrate; One end of the fourth elastic arm is connected to the second connecting arm, and the other end is connected to the pressing structure.
8. The stretching device according to claim 7, wherein The first elastic member and the second elastic member are symmetrically arranged.
9. The stretching device according to claim 1, characterized in that, A channel is formed between the first fixing member and the second fixing member, and the width of the channel is 5 - 100 μm.
10. The stretching device according to claim 1, characterized in that, A groove is provided on the substrate, and the elastic structure and the pressing structure are both provided in the groove, and the elastic structure is located between the pressing structure and the bottom wall of the groove.
11. The stretching device according to claim 10, characterized in that, The pressing structure includes a cross beam and a pressing portion. The cross beam is connected to the first elastic member and the second elastic member, and the pressing portion protrudes from the top of the cross beam.
12. The stretching device according to claim 11, characterized in that, The pressing structure further includes connecting portions extending from both ends of the cross beam. The connecting portions connect the ends of the cross beam and the side walls of the groove, and the width of the connecting portion is smaller than the width of the cross beam.