Memory alloy wire pump valve module for pneumatic support

Abstract

The utility model discloses a memory alloy wire pump valve module for pneumatic supporting, and relates to the technical field of pump valve modules, the memory alloy wire pump valve module comprises an air supply mechanism, an air distribution module, a switch valve body and an electric control module; the end part of the gas supply mechanism is provided with a gas transmission port for providing high-pressure gas; a gas distribution channel is arranged in the gas distribution module and is used for communicating the gas assembly and the gas transmission port; the gas distribution channel comprises at least one gas distribution branch, and the gas distribution branch comprises an inflation gas path and a deflation gas path; the switch valve body comprises a valve element body, and the valve element body is arranged along the axis of the air supply mechanism, corresponds to the inflation air channel and the deflation air channel and is used for controlling on-off of the inflation air channel and the deflation air channel. The electric control module comprises a memory alloy wire and an electric control assembly which are connected with the valve element bodies correspondingly so as to achieve the inflation state, the pressure maintaining state or the deflation state of the gas using assembly. According to the module, the service life of the memory alloy wire is prolonged, and the later assembling procedure of the pump valve module is simplified.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of pump valve modules, and particularly relates to a memory alloy wire pump valve module for pneumatic support. Background Art

[0002] With the progress of society and the development of technology, automobiles, as means of transportation in modern cities, have become increasingly popular, and at the same time, the number of people owning private cars has also been increasing. However, during the driving process, drivers are prone to lumbar and back strain.

[0003] To solve the above problems, a lumbar support memory alloy wire pump valve module has emerged. The pump valve module is provided with a memory alloy wire that expands and contracts to open or close the intake valve and the exhaust valve. By supplying power to the memory alloy wire, it has the functions of inflating, deflating, or maintaining pressure, and can realize the airbag support function.

[0004] However, the existing traditional pump valve modules are large in volume and complex in processing and assembly. At the same time, in the cooperation between the memory alloy wire and the valve core, due to design limitations, the memory alloy wire often needs to be bent 90 degrees and fixed to the valve core. In this way, the memory alloy wire is repeatedly pulled and rubbed at the turning point, and its service life is greatly reduced. Summary of the Utility Model

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a memory alloy wire pump valve module for pneumatic support.

[0006] The present application provides a memory alloy wire pump valve module for pneumatic support, including:

[0007] A gas supply mechanism, the end of the gas supply mechanism has a gas outlet, and the gas supply mechanism is used to provide high-pressure gas;

[0008] A gas distribution module, the gas distribution module is connected to the gas supply mechanism, and a gas distribution channel is provided inside the gas distribution module. The gas distribution channel is used to connect the gas-using component and the gas outlet; the gas distribution channel includes at least one gas distribution branch, and the gas distribution branch includes an inflation gas path and a deflation gas path. The inflation gas path is used to transport the high-pressure gas output from the gas outlet to the gas-using component, and the deflation gas path is used to discharge the gas in the gas-using component;

[0009] A switch valve body, the switch valve body includes a valve core body, the valve core body is arranged along the axis of the gas supply mechanism, the switch valve body is correspondingly arranged with the inflation gas path and the deflation gas path, and the switch valve body is used to control the on-off of the inflation gas path and the deflation gas path;

[0010] An electric control module, the electric control module includes: shape memory alloy wires respectively connected to each of the valve core bodies and an electric control component; the electric control component is used to control the expansion and contraction of the shape memory alloy wires to drive the valve core bodies to move, so as to realize the inflation state, pressure maintaining state or deflation state of the gas-using component.

[0011] According to the technical solution provided by the present application, the valve core body is arranged within an angular range formed based on the axis direction of the air supply mechanism, and the angular range is ±25°.

[0012] According to the technical solution provided by the present application, each inflation air passage and each deflation air passage are respectively communicated with a valve body installation chamber, and the valve body installation chamber is used to install the switch valve body.

[0013] According to the technical solution provided by the present application, the inflation air passage is communicated with the valve body installation chamber through an air inlet, the deflation air passage is communicated with the valve body installation chamber through a deflation port, and the valve core body is correspondingly arranged with the air inlet and the deflation port.

[0014] According to the technical solution provided by the present application, the air distribution module has at least one air outlet; the air outlet is used to communicate with the gas-using component; each air outlet is communicated with a distribution branch.

[0015] According to the technical solution provided by the present application, the switch valve body further includes:

[0016] A shock-absorbing and sealing part, the shock-absorbing and sealing part is arranged on the top of the valve core body;

[0017] A sealing bottom cover, the sealing bottom cover is arranged around the circumference of the valve core body, and the sealing bottom cover is used to seal the edge of the valve body installation chamber away from the air inlet and the deflation port;

[0018] An elastic element, one end of the elastic element abuts against the top of the sealing bottom cover through an elastic seal, and the other end abuts against the outer wall of the valve core body.

[0019] According to the technical solution provided by the present application, the tail of the valve core body has a hanging part, and the hanging part is used to connect with the shape memory alloy wire;

[0020] The shape memory alloy wire forms a connecting part by bending, and the connecting part is used to hang with the hanging part; both ends of the shape memory alloy wire are connected to a first connector to form an integrated energized structure.

[0021] According to the technical solution provided by the present application, the electric control component includes: a circuit board structure;

[0022] A second connector and a third connector are fixed on the circuit board structure;

[0023] The second connector is used to connect with the first connector, and the third connector is used to connect with an external electrical component.

[0024] According to the technical solution provided by the present application, the air supply mechanism includes: an air pump base and an air supply component arranged on the air pump base, and the air supply component is used to form an air flow flowing into the air inlet through the air outlet;

[0025] At least two guiding grooves are formed on the outer side wall of the air pump base, and the shape memory alloy wires are arranged in the guiding grooves.

[0026] According to the technical solution provided by the present application, it further includes: a housing, and the housing is arranged outside the air supply mechanism, the air distribution module and the electric control module.

[0027] In summary, the present technical solution specifically discloses a shape memory alloy wire pump valve module for pneumatic support, including: an air supply mechanism, an air distribution module, a switch valve body and an electric control module; the end of the air supply mechanism has an air outlet, and the air supply mechanism is used to provide high-pressure gas; the air distribution module is connected to the air supply mechanism, and an air distribution channel is arranged inside the air distribution module, and the air distribution channel is used to connect the air-using component and the air outlet; the air distribution channel includes at least one air distribution branch, and the air distribution branch includes an inflation air path and a deflation air path, the inflation air path is used to transport the high-pressure gas output from the air outlet to the air-using component, and the deflation air path is used to discharge the gas in the air-using component; the switch valve body includes a valve core body, the valve core body is arranged along the axis of the air supply mechanism, the switch valve body is correspondingly arranged with the inflation air path and the deflation air path, and the switch valve body is used to control the on-off of the inflation air path and the deflation air path; the electric control module includes: shape memory alloy wires respectively connected to each valve core body and an electric control component; the electric control component is used to control the expansion and contraction of the shape memory alloy wires to drive the valve core body to move, so as to realize the inflation state, pressure holding state or deflation state of the air-using component.

[0028] The existing traditional pump valve module is large in volume and complex in processing and assembly. At the same time, in the cooperation between the shape memory alloy wire and the valve core, the shape memory alloy wire often needs to be bent by 90 degrees and then fixed to the valve core, which is not conducive to the service life of the shape memory alloy wire. In the present application, through a reasonable design of the internal structure of the pump valve module, the switch valve body and the shape memory alloy wire can be directly connected during the connection process, without bending the shape memory alloy wire, which not only improves the service life of the shape memory alloy wire, but also further simplifies the assembly process of the pump valve module. Description of the Drawings

[0029] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0030] Figure 1 It is a first structural sectional view of a shape memory alloy wire pump valve module for pneumatic support.

[0031] Figure 2 It is a second structural sectional view of a shape memory alloy wire pump valve module for pneumatic support.

[0032] Figure 3 It is an enlarged schematic view of the structure at position A in a shape memory alloy wire pump valve module for pneumatic support.

[0033] Figure 4 It is an enlarged schematic view of the structure at position B in a shape memory alloy wire pump valve module for pneumatic support.

[0034] Figure 5 It is an exploded schematic view of a shape memory alloy wire pump valve module for pneumatic support.

[0035] Figure 6 It is a structural schematic view of a shape memory alloy wire pump valve module for pneumatic support.

[0036] Figure 7 It is a connection schematic view of the shape memory alloy wire in a shape memory alloy wire pump valve module for pneumatic support.

[0037] Figure 8 It is an electrical connection schematic view of the shape memory alloy wire in a shape memory alloy wire pump valve module for pneumatic support.

[0038] Figure 9 It is an overall structural schematic view of a shape memory alloy wire pump valve module for pneumatic support.

[0039] Reference numerals in the figure: 1, air supply mechanism; 2, gas outlet; 3, gas distribution module; 31, air outlet; 4, inflation gas path; 5, deflation gas path; 6, switch valve body; 7, valve core body; 8, shape memory alloy wire; 9, air inlet; 10, deflation port; 11, shock-absorbing seal part; 12, sealing bottom cover; 13, elastic element; 14, elastic seal; 15, first connector; 151, female connector; 152, male connector; 16, circuit board structure; 161, first circuit board; 162, second circuit board; 17, second connector; 18, third connector; 19, air pump base; 20, guide groove; 21, housing; 22, terminal; 23, air pump flat gasket; 25, air nozzle structure; 26, buckle; 27, motor; 28, air pump cover top; 29, air pump leather cup; 30, air pump cover bottom; 32, first fixing part; 33, second fixing part. Detailed implementation manners

[0040] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] Example 1

[0043] Please refer to Figure 1 The embodiment shown is a schematic cross-sectional view of a pneumatically supported memory alloy wire pump valve module, including:

[0044] The gas supply mechanism 1 has a gas delivery port 2 at its end, and is used to provide high-pressure gas;

[0045] The gas distribution module 3 is connected to the gas supply mechanism 1. The gas distribution module 3 is provided with a gas distribution channel inside, which is used to connect the gas-using components and the gas transmission port 2. The gas distribution channel includes at least one gas distribution branch, which includes an inflation gas path 4 and a deflation gas path 5. The inflation gas path 4 is used to deliver the high-pressure gas output from the gas transmission port 2 to the gas-using components, and the deflation gas path 5 is used to discharge the gas in the gas-using components.

[0046] The switch valve body 6 includes a valve core body 7. The valve core body 7 is arranged along the axis of the air supply mechanism 1. The switch valve body 6 is arranged corresponding to the inflation air path 4 and the deflation air path 5. The switch valve body 6 is used to control the on-off of the inflation air path 4 and the deflation air path 5;

[0047] The electric control module includes: a memory alloy wire 8 connected to each valve core body 7 and an electric control component; the electric control component is used to control the expansion and contraction of the memory alloy wire 8 to drive the valve core body 7 to move, and is used to realize the inflation state, pressure maintaining state or deflation state of the gas component.

[0048] In this embodiment, the pump-valve module has an air supply mechanism 1, which provides high-pressure gas to the pump-valve module by continuously compressing the inhaled gas. The generated high-pressure gas is pushed out of the pump chamber and can be transported to the gas distribution channel through the gas outlet 2 at the end of the air supply mechanism 1. When the gas distribution module 3 is connected to the gas-using component, the high-pressure gas provided by the air supply mechanism 1 can be filled into the gas-using component to meet the pneumatic needs of the gas-using component. The high-pressure gas here refers to the gas whose pressure is higher than the atmospheric pressure.

[0049] Since the gas-using component does not only need to be in an inflated state, the gas distribution module 3 is connected to the gas supply mechanism 1. The gas distribution module 3 is internally provided with a gas distribution channel for guiding the gas flow. The gas distribution channel is used to connect the gas-using component and the gas outlet 2; and the gas distribution channel specifically includes at least one gas distribution branch, and the number of gas distribution branches needs to be adjusted according to design requirements; further, the gas distribution branch includes an inflation gas path 4 and a deflation gas path 5, which are used to realize the function of delivering gas to the gas-using component and discharging the gas in the gas-using component.

[0050] The valve core body 7 in the switch valve body 6 is arranged corresponding to the inflation air path 4 and the deflation air path 5, and it is moved by the memory alloy wire 8 in the electric control module to control the on and off of the inflation air path 4 and the deflation air path 5. Therefore, in order to avoid the problem of reduced service life of the memory alloy wire 8 due to bending and matching, the valve core body 7 here is arranged along the axis of the air supply mechanism 1, so the memory alloy wire 8 can be directly connected to the switch valve body 6 in a vertical direction, and is no longer restricted by the layout position of the switch valve body 6, reducing the repeated pulling and friction of the memory alloy wire 8 at the turning point. In this way, the service life of the memory alloy wire 8 can be greatly improved, and the difficulty of assembly is also reduced.

[0051] Regarding the principle of the memory alloy wire 8 driving the valve core body 7 to move in the inflation air path 4 and the deflation air path 5: Due to its special material, the memory alloy wire 8 has two different states when it is energized and when it is not energized, namely, the extended state and the shortened state. When the memory alloy wire 8 is connected to the switch valve body 6, the switch valve body 6 can be driven to move by turning the power on and off by the electronic control component, thereby changing the on and off of the inflation air path 4 and the deflation air path 5 to meet the inflation state, pressure maintaining state or deflation state required by the gas component.

[0052] In a preferred embodiment, see Figure 2 The switch valve body 6 is set within an angle range formed based on the axial direction of the air supply mechanism 1, and the angle range can be ±25°.

[0053] In general design, in order to increase the service life of the memory alloy wire 8 and reduce its bending, the switch valve body 6 needs to be maintained in a relatively vertically directly connected range with the memory alloy wire 8, so the switch valve body 6 can be appropriately swung within ±25° based on the axial direction of the air supply mechanism 1 to avoid the memory alloy wire 8 from bending too large an angle to connect with the valve core body 7. This can effectively reduce the pulling force of the switch valve body 6, reduce the repeated pulling and friction of the memory alloy wire at the turning point, and extend the life of the memory alloy wire 8.

[0054] It should be explained that the angle range can be adjusted according to actual conditions, and is related to factors such as the specifications of the pump and valve module and the structural design of the internal space.

[0055] In a preferred embodiment, each inflation gas path 4 and each deflation gas path 5 are respectively communicated with a valve body installation chamber for installing a switch valve body 6.

[0056] When designing the layout position of the switch valve body 6, corresponding installation spaces also need to be reserved in the gas distribution module 3. Therefore, each inflation gas path 4 and each deflation gas path 5 in the gas distribution module 3 are respectively communicated with a valve body installation chamber. The switch valve body 6 installed in the inflation gas path 4 can be used to control the on-off of the inflation gas path 4, and the switch valve body 6 installed in the deflation gas path 5 can be used to control the on-off of the deflation gas path 5.

[0057] In a preferred embodiment, refer to Figures 1 - 4 , the inflation gas path 4 is communicated with the valve body installation chamber through the air inlet 9, and the deflation gas path 5 is communicated with the valve body installation chamber through the deflation port 10. The valve core body 7 is correspondingly arranged with the air inlet 9 and the deflation port 10.

[0058] The air inlet 9 and the deflation port 10 are respectively the air port structures at the inflation gas path 4 and the deflation gas path 5. Among them, the inflation gas path 4 is communicated with the corresponding valve body installation chamber through the air inlet 9. In this way, a high-pressure gas transmission path from the air delivery port 2, the inflation gas path 4, the air inlet 9 to the gas-using component is formed. Similarly, the deflation gas path 5 is communicated with the corresponding valve body installation chamber through the deflation port 10, that is, a gas-using component deflation path from the gas-using component, the deflation gas path 5, the deflation port 10 to the external environment is formed.

[0059] In a preferred embodiment, refer to Figure 1 , the gas distribution module 3 has at least one air outlet 31. The air outlet 31 is used to communicate with the gas-using component. Each air outlet 31 is communicated with a gas distribution branch.

[0060] In the gas distribution module 3, the specific structural carrier form of the air outlet 31 can be a nozzle structure 25 (refer to Figure 5 or Figure 9 ). The nozzle structure 25 is arranged on the top of the gas distribution module 3 and is communicated with the gas distribution branch. Then, when the nozzle structure 25 is communicated with the gas-using component, high-pressure gas can enter the gas-using component through the nozzle structure 25, and at the same time, the gas-using component can also enter the gas distribution module 3 through the nozzle structure 25 for deflation. Among them, the arrangement quantity of the air outlets 31 can be set according to actual design requirements. It should be noted that when there are multiple air outlets 31, multiple gas distribution branches independently communicated with it can be arranged in the gas distribution module 3. Then, correspondingly, there will be multiple air inlets 9 and deflation ports 10 connected to each air outlet 31. At this time, by controlling the movement of the switch valve body 6 in different gas distribution branches, the on-off of each inflation gas path 4 and deflation gas path 5 can be controlled, so as to realize the independent control of multiple gas paths and increase the practicability of the pump valve module.

[0061] The conduction of the entire gas distribution branch and the inflation, pressure maintenance and deflation states of the pump valve module are described below in conjunction with the actions of the switch valve body 6 at the air inlet 9 and the air release port 10.

[0062] First, the air supply mechanism 1 includes: an air pump leather cup 29 driven by a motor 27 to move back and forth. During the movement of the air pump leather cup 29, the gas is sucked in and pressurized, and the high-pressure gas finally formed can be pushed out of the pump chamber and output to the air distribution branch through the one-way air delivery port 2 opened on the air pump cover top 28; wherein, the one-way conduction of the air delivery port 2 is due to the fact that a gas distribution layer is provided between the input port 2 and the air pump leather cup 29, and a one-way valve is provided on the air distribution layer corresponding to the air pump leather cup 29 to control the one-way conduction from the air pump leather cup 29 to the air delivery port 2, thereby ensuring the stability of the flow direction of the gas in the air supply mechanism 1; In addition, the motor 27 of the air supply mechanism 1 is connected to the air pump leather cup 29 through the air pump base 19. The air pump base 19 is also connected in sequence to the air pump cover bottom 30, the air pump flat pad 23 and the air pump cover top 28 located on the top, thereby forming a moving space for the air pump leather cup 29; the air supply mechanism 1 also has a first fixing part 32 and a second fixing part 33 for fixing various parts, wherein the first fixing part 32 is shorter and is used to fix the air pump base 19, the air pump cover top 28, the air pump cover bottom 30 and the air pump flat pad 23; the second fixing part 33 is longer and is used to fix the air supply mechanism 1 and the air distribution module 3.

[0063] Secondly, when the high-pressure gas output from the gas delivery port 2 flows to the gas inlet 9 via the inflation gas path 4, at this time, if the valve core body 7 at the gas inlet 9 moves downward under the drive of the memory alloy wire 8, that is, the memory alloy wire 8 is in the energized state, it shortens and pulls the corresponding valve core body 7 away from the gas inlet 9, and the gas inlet 9 is connected to the gas outlet 31, while the memory alloy wire 8 corresponding to the valve core body 7 at the gas relief port 10 is still in the non-energized state, the high-pressure gas output from the gas delivery port 2 can enter the gas-using component through the gas outlet 31; on the contrary, if At this time, the gas-using component needs to be deflated, so the gas in the gas-using component flows into the gas distribution branch from the outlet 31, and flows to the deflation port 10 through the deflation gas path 5. The memory alloy wire 8 at the deflation port 10 also needs to be in an energized state, shortening and pulling the corresponding valve core body 7 to leave the deflation port 10, while the memory alloy wire 8 corresponding to the valve core body 7 at the air inlet 9 is in an unenergized state. At this time, since the valve core body 7 leaves the deflation port 10, the deflation port 10 is connected to the external environment, and the gas in the gas-using component can be discharged to the outside.

[0064] It should be explained that the valve core body 7 at the air inlet 9 and the air release port 10 can be reset by natural cooling of the memory alloy wire 8 when it is not powered, so that the memory alloy wire 8 returns to the extended state.

[0065] Based on the above-mentioned driving principle, taking the lumbar support airbag as an example, when the gas-using component can be a lumbar support airbag, when the high-pressure gas generated by the air supply mechanism 1 flows into the inflation air path 4 through the gas transmission port 2, and when the air inlet 9 is connected to the air outlet 31, it enters the lumbar support airbag, and the lumbar support airbag is in an inflated state at this time; when the lumbar support airbag needs to be deflated, the gas in the lumbar support airbag can be discharged by connecting the air discharge port 10 with the external environment, and the lumbar support airbag is in a deflated state at this time; and the pressure-maintaining state of the lumbar support airbag requires that when the inflation volume of the lumbar support airbag meets the passenger's needs, the memory alloy wire 8 at the air inlet 9 and the air discharge port 10 is promptly de-energized, and the memory alloy wire 8 drives the valve core body 7 to press against the air inlet 9 and the air discharge port 10, and the inflation air path 4 and the deflation air path 5 are in a non-conducting state, so that the lumbar support airbag maintains the current inflation volume, and the lumbar support airbag is in a pressure-maintaining state.

[0066] In a preferred embodiment, see Figure 5 , the switch valve body 6 also includes:

[0067] The shock-absorbing sealing portion 11 is provided on the top of the valve core body 7;

[0068] The sealing bottom cover 12 is arranged around the valve core body 7 and is used to seal the edge of the valve body installation chamber away from the air inlet 9 and the air release port 10;

[0069] The elastic element 13 has one end in contact with the top of the sealing bottom cover 12 through the elastic seal 14 , and the other end in contact with the outer wall of the valve core body 7 .

[0070] In the actual design, the valve core body 7 is arranged in the valve body installation chamber. The valve core body 7 and the shock-absorbing sealing part 11 on the top are used to block the air inlet 9 and the air release port 10. When the memory alloy wire 8 is in the extended state, the gas flow in the gas distribution branch is blocked.

[0071] The sealing bottom cover 12 is arranged on the side of the valve core body 7, and can be sealed and fixed with the lower edge of the valve body installation chamber, thereby fixing the valve core body 7 in the corresponding position. At the same time, the lower surface of the sealing bottom cover 12 is also fixed with the top end face of the air pump cover top 28.

[0072] One end of the elastic element 13 is connected to the top of the sealing bottom cover 12 through an elastic seal 14, which can prevent the elastic element 13 from damaging the sealing bottom cover 12 during the deformation process. The elastic element 13 is used to provide the valve core body 7 with a force to reset to the air inlet 9 and the air release port 10 and to fit tightly with the air inlet 9 and the air release port 10.

[0073] It should be noted that the elastic seal 14 here not only seals the gap formed between the valve core body 7 and the sealing bottom cover 12, but also, together with the elastic element 13, assists in the reset of the valve core body 7; the elastic element 13 is sleeved on the outside of the protruding part of the elastic seal 14, and it abuts against both the valve core body 7 and the elastic seal 14; optionally, the elastic seal 14 is fixedly connected to the sealing bottom cover 12 by gluing or welding.

[0074] In a preferred embodiment, referring to Figure 1 or Figure 2 , the tail of the valve core body 7 has a hanging portion for connecting with the shape memory alloy wire 8;

[0075] The shape memory alloy wire 8 is bent to form a connecting portion for hanging with the hanging portion; both ends of the shape memory alloy wire 8 are connected to the first connector 15 to form an integrated energized structure.

[0076] The specification of the valve core body 7 needs to match the air inlet 9 and the air release port 10. At the same time, a hanging portion is formed on the outer side wall. The form of the hanging portion can be an oblique opening formed at the tail of the valve core body 7. The oblique opening with a certain inclination angle can effectively prevent the shape memory alloy wire 8 hung on the valve core body 7 from falling off; in addition, the hanging portion can also be a through hole provided on the valve core body 7, and the shape memory alloy wire 8 passes through the through hole to be connected to the valve core body 7. The specific structural form of the hanging portion is not specifically limited here.

[0077] The shape memory alloy wire 8 can be obtained by bending a single shape memory metal wire. In this way, the bent arc portion is the connecting portion, which can be directly hung with the hanging portion. In addition, to save the assembly process and improve the assembly efficiency, both ends of the shape memory alloy wire 8 can be pre-assembled with the first connector 15. In this way, the shape memory alloy wire 8 and the first connector 15 are used as a standardized module and directly installed outside the air supply mechanism 1 in a hanging form.

[0078] It should be noted that the connection form between both ends of the shape memory alloy wire 8 and the first connector 15 is specifically that both ends of the shape memory alloy wire 8 are respectively crimped and connected to the female connector 151 through the terminals 22 first, and then the female connector 151 is connected to the male connector 152 to achieve the function of fixing and conducting the shape memory alloy wire 8.

[0079] In a preferred embodiment, referring to Figure 1 and Figure 6 , the electronic control component includes: a circuit board structure 16;

[0080] The second connector 17 and the third connector 18 are fixed on the circuit board structure 16;

[0081] The second connector 17 is used to connect with the first connector 15, and the third connector 18 is used to connect with an external electrical component.

[0082] Since the movement of the shape memory alloy wire 8 is controlled by power on and off, the electronic control component includes a circuit board structure 16, and the circuit board structure 16 is composed of two first circuit boards 161 and a second circuit board 162 arranged up and down. The two circuit boards are connected by the second connector 17; the first connector 15 is plugged into the second connector 17 on the first circuit board 161, thereby conducting the first connector 15 and the second connector 17; in addition, a third connector 18 is also arranged on the second circuit board 161. The third connector 18 is conducted with the second connector 17 and is used to connect with an external electrical component to realize the operation of controlling the power on and off of the shape memory alloy wire 8 by using the external electrical component. At the same time, since each shape memory alloy wire 8 is independently connected to the second connector 17, multi-channel independent or overall control can also be realized based on the external electrical component.

[0083] Here, the first connector 15 can also be called a terminal connector, and the second connector can also be called a plug connector; however, the shape memory alloy wire 8 can also be directly connected to the terminal block on the circuit board structure at the motor end in a direct connection manner.

[0084] In a preferred embodiment, refer to Figure 5 、 Figure 6 , the air supply mechanism 1 includes: an air pump base 19 and an air supply component arranged on the air pump base 19. The air supply component is used to form an air flow flowing into the air inlet 9 through the air outlet 2.

[0085] At least two guide grooves 20 are formed on the outer side wall of the air pump base 19, and the shape memory alloy wires 8 are arranged in the guide grooves 20.

[0086] In order to prevent the shape memory alloy wires 8 from coming out and contacting each other to cause a short circuit, at least two guide grooves 20 extending along the axial direction of the air supply mechanism 1 are formed on the outer side wall of the air pump base 19 for arranging the shape memory alloy wires 8. The specific extension direction and length specification of the guide grooves 20 can be adjusted according to the actual situation.

[0087] In a preferred embodiment, refer to Figure 9 , a housing 21, and the housing 21 is arranged outside the air supply mechanism 1, the air distribution module 3, and the electronic control module.

[0088] In order to protect the air supply mechanism 1, the air distribution module 3, and the electronic control module, the pump valve module further includes a corresponding housing 21. The housing 21 can be formed by detachably connecting two separate housings to form a protection space. The specific connection form can be a buckle 26, or a bolt and nut, etc., and no special limitation is made specifically.

[0089] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. A memory alloy wire pump valve module for pneumatic support, characterized in that, Including: A gas supply mechanism (1), the end of the gas supply mechanism (1) has a gas delivery port (2), and the gas supply mechanism (1) is used to provide high-pressure gas; A gas distribution module (3), the gas distribution module (3) is connected to the gas supply mechanism (1), and a gas distribution channel is provided inside the gas distribution module (3), and the gas distribution channel is used to connect the gas-using component and the gas delivery port (2); the gas distribution channel includes at least one gas distribution branch, and the gas distribution branch includes an inflation gas path (4) and a deflation gas path (5), the inflation gas path (4) is used to transport the high-pressure gas output from the gas delivery port (2) to the gas-using component, and the deflation gas path (5) is used to discharge the gas in the gas-using component; A switch valve body (6), the switch valve body (6) includes a valve core body (7), the valve core body (7) is arranged along the axis of the gas supply mechanism (1), the switch valve body (6) is correspondingly arranged with the inflation gas path (4) and the deflation gas path (5), and the switch valve body (6) is used to control the on-off of the inflation gas path (4) and the deflation gas path (5); An electric control module, the electric control module includes: a shape memory alloy wire (8) and an electric control component respectively connected to each valve core body (7); The electric control component is used to control the expansion and contraction of the shape memory alloy wire (8) to drive the valve core body (7) to move, so as to realize the inflation state, pressure holding state or deflation state of the gas-using component.

2. The memory alloy wire pump valve module for pneumatic support according to claim 1, wherein The valve core body (7) is arranged within an angular range formed based on the axis direction of the gas supply mechanism (1), and the angular range is ±25°.

3. The memory alloy wire pump valve module for pneumatic support according to claim 1, characterized in that Each inflation gas path (4) and each deflation gas path (5) are respectively communicated with a valve body installation chamber, and the valve body installation chamber is used to install the switch valve body (6).

4. The memory alloy wire pump valve module for pneumatic support according to claim 3, characterized in that, The inflation gas path (4) is communicated with the valve body installation chamber through an air inlet (9), the deflation gas path (5) is communicated with the valve body installation chamber through a deflation port (10), and the valve core body (7) is correspondingly arranged with the air inlet (9) and the deflation port (10).

5. The memory alloy wire pump valve module for pneumatic support according to claim 4, characterized in that, The gas distribution module (3) has at least one air outlet (31); the air outlet (31) is used to communicate with the gas-using component; each air outlet (31) is communicated with one of the gas distribution branches.

6. The memory alloy wire pump valve module for pneumatic support according to claim 4, characterized in that, The switch valve body (6) further includes: A shock-absorbing and sealing part (11), the shock-absorbing and sealing part (11) is arranged at the top of the valve core body (7); A sealing bottom cover (12), the sealing bottom cover (12) is arranged around the circumference of the valve core body (7), and the sealing bottom cover (12) is used to seal the edge of the valve body installation chamber away from the air inlet (9) and the deflation port (10); An elastic element (13), one end of the elastic element (13) abuts against the top of the sealing bottom cover (12) through an elastic seal (14), and the other end thereof abuts against the outer wall of the valve core body (7).

7. A shape memory alloy wire pump valve module for pneumatic support according to claim 5, characterized in that, The tail of the valve core body (7) has a hanging part, and the hanging part is used to connect with the shape memory alloy wire (8); The shape memory alloy wire (8) is bent to form a connecting part for hooking with the hooking part; both ends of the shape memory alloy wire (8) are connected to a first connector (15) to form an integral power-on structure.

8. A shape memory alloy wire pump valve module for pneumatic support according to claim 7, characterized in that, The electric control assembly includes: a circuit board structure (16); A second connector (17) and a third connector (18) are fixed on the circuit board structure (16); The second connector (17) is used to connect with the first connector (15), and the third connector (18) is used to connect with an external electrical component.

9. The memory alloy wire pump valve module for pneumatic support according to claim 4, characterized in that, The air supply mechanism (1) includes: an air pump base (19) and an air supply component arranged on the air pump base (19), and the air supply component is used to form an air flow flowing into the air inlet (9) through the air outlet (2); At least two guiding grooves (20) are formed in the outer side wall of the air pump base (19), and the shape memory alloy wire (8) is arranged in the guiding grooves (20).

10. The memory alloy wire pump valve module for pneumatic support according to claim 1, characterized in that, It further includes: A housing (21) is arranged outside the air supply mechanism (1), the air distribution module (3) and the electric control module.

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