Electromagnetic driver and electromagnetic coil assembly

Abstract

The electromagnetic driver and electromagnetic coil assembly comprises a supporting base, a magnetic attraction base, two linkage rods and an electromagnetic coil, the supporting base and the electromagnetic coil are installed in a spaced mode, the magnetic attraction base is located between the supporting base and the electromagnetic coil, the two linkage rods are both fixedly installed on the magnetic attraction base, and the two linkage rods are both provided with power connection terminals. The motor is electrically connected with the electromagnetic coil; the two linkage rods are in sliding connection with the supporting base and can slide in a reciprocating mode in the direction of the electromagnetic coil. The device further comprises an external connection seat, the external connection seat is installed on the supporting seat, the external connection seat comprises two power connection parts, and the two power connection parts are arranged opposite to the two linkage rods correspondingly. And an elastic piece is mounted between the magnetic attraction seat and the electromagnetic coil and is used for elastically driving the linkage rod to slide until the linkage rod is in contact and conducted with the power connection piece. Through the acting force of the electromagnetic coil and the elastic piece, reciprocating driving of the magnetic attraction base and the linkage rod can be achieved, and pulse type action output is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic coils, and more specifically, to an electromagnetic driver, and also to an electromagnetic coil assembly having the electromagnetic driver. Background Art

[0002] Currently common pulse pumps are usually driven by mechanical motors or cylinders, and the internal power mechanism and actuator are used in conjunction with each other, resulting in relatively more overall components and a larger size.

[0003] Some pulse pumps also use electromagnetic structures. In order to achieve pulsed driving action, a controller and an electromagnetic driver are combined. The controller can control the generation of pulsed signals, and the electromagnetic driver can generate driving actions. The combination of the two can control the electromagnetic driver to generate pulsed driving actions, and then generate pulsed action outputs. The current electromagnetic pulse pumps have controller constraints and require pulse signals to work properly.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an electromagnetic driver and an electromagnetic coil assembly.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An electromagnetic driver comprises a support seat, a magnetic seat, two linkage rods and an electromagnetic coil, wherein the support seat and the electromagnetic coil are installed at intervals, the magnetic seat is located between the support seat and the electromagnetic coil, the two linkage rods are fixedly installed on the magnetic seat, the two linkage rods are installed with power terminals and are electrically connected to the electromagnetic coil; the two linkage rods are slidably connected to the support seat and can slide back and forth toward the electromagnetic coil;

[0008] It also includes an external seat, which is installed on the support seat, and the external seat includes two power connecting parts, which are respectively arranged opposite to the two linkage rods; an elastic part is installed between the magnetic seat and the electromagnetic coil, and the elastic part is used to elastically drive the linkage rod to slide until the linkage rod and the power connecting part are in contact and connected; the electromagnetic coil is turned on to magnetically absorb the magnetic seat, drive the linkage rod and the power connecting part to disconnect from each other, and elastically compress the elastic part.

[0009] The present invention is further configured as follows: the elastic member includes an elastic bag that can be elastically expanded, and a spring 1 is arranged in the elastic bag; the interior of the elastic bag is hollow, and two interfaces 1 and one interface 2 are arranged on the side of the elastic bag facing the support seat; both interface 1 and interface 2 are provided with one-way valves, the one-way valve of interface 1 can conduct one-way flow toward the outside of the elastic bag, and the one-way valve of interface 2 can conduct one-way flow toward the inside of the elastic bag.

[0010] The present invention is further configured such that the linkage rod has a first end and a second end, and is provided with a central hole penetrating through the two ends; the two interfaces 1 are respectively connected to the second ends of the two linkage rods; and the interface 2 is connected to a catheter.

[0011] The present invention is further configured such that the support seat includes two cylindrical parts, an end cover part is provided at one end of the cylindrical part facing the electromagnetic coil, and the other end forms an opening; the end cover part is provided with a through hole; the linkage rod is sealingly slidably connected in the through hole, and the first end extends into the cylindrical part.

[0012] The present invention is further configured that the linkage rod extends into the cylindrical portion and is externally fixedly connected to a limit clamp ring;

[0013] The present invention is further configured such that the magnetic seat is fixedly connected to a guide rod, the guide rod is arranged parallel to the linkage rod, the support seat is provided with a guide hole, and the guide rod is slidably connected in the guide hole.

[0014] The present invention is further configured such that the elastic bag comprises a first support side and a second support side, the first support side and the second support side are respectively facing the support seat and the electromagnetic coil, and the first spring is elastically pressed between the first support side and the second support side;

[0015] The present invention is further configured such that the first interface is located at the first support side, and the second interface is located at the second support side.

[0016] The present invention is further configured such that the external socket includes two plugs, which are respectively inserted into the openings of the two cylindrical parts, the inner walls of the plugs are fixedly connected with an internal support part, and the power connection piece is located on the side of the plug facing the linkage rod and is axially slidably connected to the plug; a second spring is arranged between the internal support part and the power connection piece, and the two ends of the second spring are respectively fixedly connected to the internal support part and the power connection piece.

[0017] The present invention is further configured such that, during the reciprocating movement of the linkage rod, the linkage rod has an extended state and a retracted state. In the extended state, the linkage rod is farthest from the electromagnetic coil, the linkage rod is against the power connection piece, and the second spring is elastically compressed; in the retracted state, the linkage rod is closest to the electromagnetic coil, the linkage rod is separated from the power connection piece, and the second spring is at its initial length.

[0018] The present invention is further configured such that a ball head is formed at the second end of the linkage rod, and the center hole passes through the ball head; the electrical connection piece is provided with an arc-shaped recess adapted to the ball head, and the ball head can abut against and partially sink into the arc-shaped recess;

[0019] The present invention is further configured such that the cannula and the cylindrical portion are sealed and plugged into each other, and the insertion depth of the cannula can be adjusted.

[0020] The present invention also provides an electromagnetic coil assembly, characterized in that it includes the above-mentioned electromagnetic driver, and through the action force of the electromagnetic coil and the elastic member, the magnetic suction seat and the linkage rod can be reciprocated to achieve pulsed action output.

[0021] In summary, the present invention has the following beneficial effects:

[0022] By fixing the two linkage rods to the magnetic seat and slidingly connecting the two linkage rods to the support seat, the two linkage rods can slide back and forth toward the electromagnetic coil. Both linkage rods are equipped with power terminals and are electrically connected to the electromagnetic coil. The two linkage rods serve not only as action parts but also as power connection parts, and can simultaneously realize driving action and power on and off switching during the reciprocating sliding process.

[0023] By providing a hollow elastic bag and combining it with a tubular linkage rod, the liquid in the elastic bag can be transported, and the pulse output of the liquid can be achieved during the operation of the electromagnetic driver.

[0024] By using springs to elastically support the connecting piece, the connecting piece can have a certain elastic floating space. During the retraction of the linkage rod, the first end of the linkage rod and the connecting piece can be kept in contact with each other, and the magnetic adsorption force can be continuously provided, thereby maintaining a stable pumping driving force for a certain period of time, so that the electromagnetic driver can provide stable pulse power output.

[0025] The liquid pumped from the first end of the linkage rod can provide a buffering force for the retraction action of the electromagnetic driver, thereby slowing down the rate at which the elastic bag is squeezed and retracted, providing continuous and stable pumping power and avoiding excessive pumping pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the electromagnetic driver in this embodiment, in a state where the elastic capsule is not installed;

[0027] Figure 2 is a three-dimensional diagram of the electromagnetic driver in this embodiment;

[0028] Figure 3 is a front view of the electromagnetic driver in this embodiment;

[0029] Figure 4 is an exploded view of the electromagnetic driver in this embodiment;

[0030] Figure 5 is a cross-sectional view of the electromagnetic driver in this embodiment in a state where the external socket is not installed;

[0031] Figure 6 is a cross-sectional view of the elastic bladder in this embodiment;

[0032] Figure 7 is a cross-sectional view of the linkage rod of the electromagnetic driver in this embodiment in an extended state;

[0033] Figure 8 This is a partial structural diagram of the linkage rod and the external seat in this embodiment, where the linkage rod is in a retracted state;

[0034] Fig. 9 It is a cross-sectional view of the elastic bag of the electromagnetic driver in the compressed state in this embodiment.

[0035] Figure numerals: support seat 1; cylindrical portion 11; end cover portion 12; through hole 13; opening 14; sealing portion 15; guide hole 16; magnetic seat 2; mounting hole 21; guide rod 22; linkage rod 3; annular convex portion 31; insulating connecting piece 32; limiting clamping ring 33; center hole 301; first end 302; second end 303; ball head 304; power terminal 4; wire 41; electromagnetic coil 5; elastic bag 6; interface one 61; interface two 62; spring one 63; limiting baffle ring 64; one-way valve 65; support side one 601; support side two 602; catheter 7; external seat 8; insertion tube 80; internal support portion 81; spring two 82; power connection piece 83; arc-shaped depression 831; connecting hole 832. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] This embodiment discloses an electromagnetic driver, referring to Figure 1-Figure 9 As shown, it includes a support base 1, a magnetic base 2, two linkage rods 3 and an electromagnetic coil 5. The support base 1 and the electromagnetic coil 5 are installed at a distance, and the two are fixedly installed by a supporting component.

[0038] Reference Figure 1-Figure 4As shown, the magnetic seat 2 is located between the support seat 1 and the electromagnetic coil 5. The magnetic seat 2 is a disc-shaped structure and is movable. When the electromagnetic coil 5 is energized, it can generate a magnetic force on the magnetic seat 2 and can move closer to the electromagnetic coil 5. The two linkage rods 3 are fixedly installed on the magnetic seat 2, and the two linkage rods 3 and the magnetic seat 2 can move synchronously.

[0039] The two linkage rods 3 are slidably connected to the support seat 1 and can slide back and forth toward the electromagnetic coil 5. Both linkage rods 3 are equipped with power terminals 4 and are electrically connected to the electromagnetic coil 5. The two linkage rods 3 are not only action components, but also power components, and can simultaneously realize driving action and power on / off switching during the reciprocating sliding process.

[0040] Specifically, an annular protrusion 31 is integrally formed on the outer circumference of the linkage rod 3, the linkage rod 3 passes through the mounting hole 21 on the magnetic seat 2, and an insulating connecting piece 32 is installed between the annular protrusion 31 and the magnetic seat 2, and the linkage rod 3, the insulating connecting piece 32 and the magnetic seat 2 are bonded and fixed. The power terminal 4 is fixedly installed on the outer side of the linkage rod 3, and the power terminal 4 is connected to the electromagnetic coil 5 through a wire 41.

[0041] Reference Figure 4 , Figure 5 As shown, an elastic member is installed between the magnetic seat 2 and the electromagnetic coil 5. The elastic member is elastic and can elastically drive the linkage rod 3 to slide until the linkage rod 3 and the power connection part 83 are in contact and connected. The electromagnetic coil 5 is turned on and can magnetically absorb the magnetic seat 2, drive the linkage rod 3 and the power connection part 83 to disconnect from each other, and elastically compress the elastic member. Through the action of the electromagnetic coil 5 and the elastic member, the magnetic seat 2 and the linkage rod 3 can be reciprocated and the action output of the electromagnetic driver can be realized.

[0042] Reference Figure 7 As shown, the power connection member 83 is usually supported by an external connection seat 8, and the external connection seat 8 can be installed on the support seat 1. The external connection seat 8 includes two power connection members 83, and the two power connection members 83 are respectively arranged opposite to the two linkage rods 3.

[0043] Reference Figure 7 , Figure 8As shown, when the power connection part 83 is in the state of being powered off, under the elastic driving action of the elastic part, the magnetic seat 2 and the two linkage rods 3 move toward the upper side, the end of the linkage rod 3 presses against the power connection part 83 in the external seat 8, and the electromagnetic driver does not work. When the power connection part 83 is in the state of being powered on, since the power connection part 83 and the linkage rod 3 press against each other, at this time, the linkage rod 3 is in the power-on state, and the electromagnetic coil 5 is also powered on to generate magnetism, and the electromagnetic coil 5 can magnetically absorb the magnetic seat 2, overcome the elastic force of the elastic part and move toward the direction of the electromagnetic coil 5 until the linkage rod 3 and the power connection part 83 are separated from each other; at this time, the electromagnetic coil 5 is powered off and demagnetized, and the elastic part will elastically push the magnetic seat 2 and the two linkage rods 3 to move toward the upper side again, until the end of the linkage rod 3 presses against the power connection part 83 in the external seat 8, and the electromagnetic coil 5 will be powered on to generate magnetism again, so that the magnetic seat 2 and the two linkage rods 3 of the electromagnetic driver can produce reciprocating sliding action.

[0044] Reference Figure 5 , Figure 6 As shown, the elastic member includes an elastic capsule 6 that can be elastically expanded. The elastic capsule 6 is hollow inside and is provided with a spring 1 63. The elastic force is generated by the elasticity of the elastic capsule 6 and the elasticity of the spring 1 63. The elastic capsule 6 is provided with two interfaces 1 61 and one interface 2 62 on the side facing the support seat 1; both interfaces 1 61 and interface 2 62 are provided with a one-way valve 65, and the one-way valve 65 of interface 1 61 can be unidirectionally conducted toward the outside of the elastic capsule 6, and the one-way valve 65 of interface 2 62 can be unidirectionally conducted toward the inside of the elastic capsule 6.

[0045] The elastic bag 6 includes a support side 1 601 and a support side 2 602. Both the support side 1 601 and the support side 2 602 are planar structures. The support side 1 601 and the support side 2 602 face the support seat 1 and the electromagnetic coil 5 respectively. The interface 1 61 is located at the support side 1 601, and the interface 2 62 is located at the support side 2 602. The spring 1 63 is elastically pressed between the support side 1 601 and the support side 2 602. The inner sides of the support side 1 601 and the support side 2 602 are fixedly connected to the limit retaining ring 64. The end of the spring 1 63 can be embedded in the inner circumference of the limit retaining ring 64, thereby limiting the spring 1 63 and maintaining the stability of the installation structure of the spring 1 63.

[0046] The elastic capsule 6 is located between the electromagnetic coil 5 and the magnetic seat 2. During the reciprocating motion of the magnetic seat 2, an extrusion effect is exerted on the elastic capsule 6. When subjected to the extrusion effect, the liquid can be sucked into the elastic capsule 6 from the second interface 62, and then squeezed out from the first interface 61, thereby realizing a one-way flow of the liquid in the elastic capsule 6 and achieving a pumping action for the liquid.

[0047] Reference Figure 5 , Figure 7As shown, in this embodiment, the linkage rod 3 is a hollow tubular structure, having a first end 302 and a second end 303, and a central hole 301 passing through the two ends. The two interfaces 1 61 are respectively connected to the second ends 303 of the two linkage rods 3, and the liquid pumped out from the elastic bag 6 can enter the two linkage rods 3 respectively, and can flow along the linkage rod 3 from the second end 303 of the linkage rod 3 to the first end 302. The interface 2 62 is connected to the catheter 7, and the liquid can be sucked from the catheter 7 to realize the transportation and circulation of the liquid.

[0048] Reference Figure 4 , Figure 5 , Figure 7 As shown, the support seat 1 includes two cylindrical parts 11, and the two cylindrical parts 11 are fixedly connected side by side. The end of the cylindrical part 11 facing the electromagnetic coil 5 is provided with an end cover 12, and the other end forms an opening 14. The end cover 12 is provided with a through hole 13, and the linkage rod 3 is sealed and slidably connected in the through hole 13, and the first end 302 extends into the cylindrical part 11. The opening 14 can be plugged and installed with the external seat 8.

[0049] The linkage rod 3 extends into the outer portion of the cylindrical portion 11 and is fixedly connected to a limit snap ring 33. The limit snap ring 33 is clamped and fixed to the outer periphery of the linkage rod 3, and can limit the travel of the linkage rod 3. Specifically, when the linkage rod 3 slides relative to the support seat 1, the travel on one side is blocked and limited by the limit snap ring 33, and the travel on the other side is blocked and limited by the magnetic seat 2.

[0050] In order to maintain the sliding stability of the magnetic seat 2, a guide rod 22 is fixedly connected to the side of the magnetic seat 2 facing the support seat 1, and the guide rod 22 is arranged parallel to the linkage rod 3. A guide hole 16 is opened in the support seat 1, and the guide rod 22 is slidably connected in the guide hole 16, which can guide the sliding movement, thereby forming three guide points between the magnetic seat 2 and the support seat 1 to ensure the stability of the sliding structure.

[0051] Reference Figure 5 , Figure 7 As shown, in this embodiment, the external socket 8 includes two inserting tubes 80, and the two inserting tubes 80 are respectively inserted into the openings 14 of the two cylindrical parts 11. The inserting tube 80 and the cylindrical part 11 are sealed and inserted with each other. Specifically, multiple sealing parts 15 are formed between the inner periphery of the opening 14 of the cylindrical part 11 and the outer periphery of the inserting tube 80, which can realize the sliding sealing of the inserting tube 80. By adjusting the insertion and withdrawal of the inserting tube 80, the insertion depth of the inserting tube 80 can be adjusted, and then the position of the electric component 83 in the inserting tube 80 can be appropriately adjusted to fine-tune the action of the electromagnetic drive.

[0052] After the external seat 8 is adjusted, it can be fixed by an external bracket and a locking structure to ensure that the support seat 1 and the electromagnetic coil 5 can be kept in a relatively fixed state during the working process.

[0053] Furthermore, an inner support portion 81 is fixedly connected to the inner wall of the insert tube 80, and the inner support portion 81 is a convex ring-shaped structure, and the power connection piece 83 is located on the side of the insert tube 80 facing the linkage rod 3. In addition, the size of the power connection piece 83 is adapted to the inner diameter of the insert tube 80, and the power connection piece 83 can be axially slidably connected to the insert tube 80.

[0054] A second spring 82 is installed between the inner support portion 81 and the power connection member 83, and the two ends of the second spring 82 are respectively fixedly connected to the inner support portion 81 and the power connection member 83. The second spring 82 can support the power connection member 83, so that the power connection member 83 has a certain floating space.

[0055] Reference Figure 7 As shown, when the linkage rod 3 is extended upward, the upper end (first end 302) of the linkage rod 3 can be in a state of mutual contact with the power receiving part 83, the power receiving part 83 and the linkage rod 3 are mutually conductive, the electromagnetic coil 5 is energized to generate magnetic adsorption force, and the linkage rod 3 and the magnetic seat 2 begin to move downward. During the reciprocating movement of the linkage rod 3, the linkage rod 3 has an extended state and a retracted state, wherein the extended state is farthest from the electromagnetic coil 5, and the retracted state is closest to the electromagnetic coil 5.

[0056] Reference Figure 7 As shown, when the linkage rod 3 is in the extended state, the first end 302 of the linkage rod 3 abuts against the power receiving member 83, and the second spring 82 is in the compressed state.

[0057] Reference Fig. 9 As shown, during the movement of the linkage rod 3 from the extended state to the retracted state, the second spring 82 gradually recovers from the compressed state. During the elastic recovery of the second spring 82, the first end 302 of the linkage rod 3 and the power receiving part 83 can be kept in contact with each other, that is, the electromagnetic coil 5 can maintain continuous power supply, can continuously provide magnetic adsorption force, and can then maintain a stable pumping driving force for a period of time; until the first end 302 of the linkage rod 3 and the power receiving part 83 are separated from each other, and then under the action of inertia, the linkage rod 3 and the magnetic seat 2 will also generate a certain amplitude of distance until reaching the retracted state. Since the linkage rod 3 and the power receiving part 83 are separated from each other in the retracted state, the electromagnetic coil 5 is powered off and demagnetized, and under the action of the elastic member, the linkage rod 3 and the magnetic seat 2 will be pushed upward again, and the linkage rod 3 can move from the retracted state to the extended state, realizing the reciprocating motion of the linkage rod 3, and the electromagnetic driver realizes the electromagnetic driving action.

[0058] During the movement of the linkage rod 3 from the extended state to the retracted state, the electromagnetic coil 5 continues to apply a magnetic force when the front section retracts. Although it can generate a stable and continuous driving force, an excessive driving force may cause the pumping speed to be too fast and the pressure inside the elastic bag 6 to be too high.

[0059] The second end 303 of the linkage rod 3 is formed with a ball head 304, and the center hole 301 passes through the ball head 304. The electrical connection piece 83 is provided with an arc-shaped recess 831 adapted to the ball head 304, and the ball head 304 can abut against and partially sink into the arc-shaped recess 831. When the second end 303 of the linkage rod 3 contacts the electrical connection piece 83, the surface of the ball head 304 and the arc-shaped recess 831 abut against each other. On the periphery of the electrical connection piece 83, corresponding to the periphery of the arc-shaped recess 831, a connecting hole 832 is provided that passes through both ends, so that liquid on both sides of the electrical connection piece 83 can flow.

[0060] When the linkage rod 3 moves from the extended state to the retracted state, the elastic capsule 6 generates an extrusion force, and the liquid in the capsule can be connected along the interface 1 61 and the central hole 301 of the linkage rod 3 to the end opening direction of the ball head 304 of the linkage rod 3. The liquid output from the first end 302 of the linkage rod 3 is input between the ball head 304 and the arc-shaped recess 831. The liquid entering can generate a repulsive force on the ball head 304 and the arc-shaped recess 831, so that a small gap can be generated between the surface of the ball head 304 and the arc-shaped recess 831. At the moment of the gap, the two are not in contact, and the electromagnetic coil 5 is powered off and demagnetized, and then re-contacted under the action of the spring, and continues to move to the retracted state. In this embodiment, the liquid pumped in the electromagnetic driver is an insulating liquid.

[0061] The liquid pumped from the first end 302 of the linkage rod 3 can provide a buffering force for the retraction action of the electromagnetic driver, thereby slowing down the rate at which the elastic bag 6 is squeezed and retracted, and providing continuous and stable pumping power.

[0062] This embodiment also discloses an electromagnetic coil assembly, characterized in that it includes the electromagnetic driver as described above, and through the action of the electromagnetic coil 5 and the elastic member, the magnetic seat 2 and the linkage rod 3 can be reciprocated to achieve the action output of the electromagnetic driver.

[0063] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electromagnetic driver, characterized in that: The invention comprises a support seat (1), a magnetic seat (2), two linkage rods (3) and an electromagnetic coil (5), wherein the support seat (1) and the electromagnetic coil (5) are installed at a distance, the magnetic seat (2) is located between the support seat (1) and the electromagnetic coil (5), the two linkage rods (3) are fixedly installed on the magnetic seat (2), the two linkage rods (3) are installed with power terminals (4) and are electrically connected to the electromagnetic coil (5); the two linkage rods (3) are slidably connected to the support seat (1) and can slide back and forth in the direction of the electromagnetic coil (5); The invention also comprises an external seat (8), the external seat (8) being mounted on the support seat (1), the external seat (8) comprising two power connection parts (83), the two power connection parts (83) being respectively arranged opposite to the two linkage rods (3); an elastic part is mounted between the magnetic seat (2) and the electromagnetic coil (5), the elastic part being used to elastically drive the linkage rod (3) to slide until the linkage rod (3) and the power connection parts (83) are in contact and connected; the electromagnetic coil (5) being connected can magnetically absorb the magnetic seat (2), drive the linkage rod (3) and the power connection parts (83) to be disconnected from each other, and elastically compress the elastic part.

2. The electromagnetic driver according to claim 1, characterized in that: The elastic member comprises an elastic bag (6) capable of elastic expansion, wherein a spring 1 (63) is arranged in the elastic bag (6); the elastic bag (6) is hollow inside, and two interfaces 1 (61) and one interface 2 (62) are arranged on the side of the elastic bag (6) facing the support seat (1); both the interface 1 (61) and the interface 2 (62) are provided with a one-way valve (65), the one-way valve (65) of the interface 1 (61) can be unidirectionally conducted toward the outside of the elastic bag (6), and the one-way valve (65) of the interface 2 (62) can be unidirectionally conducted toward the inside of the elastic bag (6).

3. The electromagnetic driver according to claim 2, characterized in that: The linkage rod (3) has a first end (302) and a second end (303), and is provided with a central hole (301) passing through the two ends; the two interfaces (61) are respectively connected to the second ends (303) of the two linkage rods (3); the interface (62) is connected to a catheter (7).

4. The electromagnetic driver according to claim 3, characterized in that: The support seat (1) comprises two cylindrical parts (11), one end of the cylindrical part (11) facing the electromagnetic coil (5) is provided with an end cover part (12), and the other end forms an opening (14); the end cover part (12) is provided with a through hole (13); the linkage rod (3) is sealingly slidably connected in the through hole (13), and the first end (302) extends into the cylindrical part (11).

5. The electromagnetic driver according to claim 4, characterized in that: The linkage rod (3) extends into the cylindrical portion (11) and is fixedly connected to an external limiting clamp ring (33); The magnetic seat (2) is fixedly connected to a guide rod (22), the guide rod (22) is arranged parallel to the linkage rod (3), the support seat (1) is provided with a guide hole (16), and the guide rod (22) is slidably connected to the guide hole (16).

6. The electromagnetic driver according to claim 2, characterized in that: The elastic bag (6) comprises a support side 1 (601) and a support side 2 (602), wherein the support side 1 (601) and the support side 2 (602) face the support seat (1) and the electromagnetic coil (5) respectively, and the spring 1 (63) elastically presses between the support side 1 (601) and the support side 2 (602); The interface one (61) is located on the support side one (601), and the interface two (62) is located on the support side two (602).

7. The electromagnetic driver according to claim 4, characterized in that: The external connection seat (8) comprises two insertion tubes (80), the two insertion tubes (80) are respectively inserted into the openings (14) of the two cylindrical parts (11), the inner wall of the insertion tube (80) is fixedly connected with an inner support part (81), the power connection part (83) is located on the side of the insertion tube (80) facing the linkage rod (3), and is axially slidably connected with the insertion tube (80); a second spring (82) is arranged between the inner support part (81) and the power connection part (83), and the two ends of the second spring (82) are respectively fixedly connected with the inner support part (81) and the power connection part (83).

8. The electromagnetic driver according to claim 7, characterized in that: During the reciprocating movement of the linkage rod (3), the linkage rod (3) has an extended state and a retracted state. In the extended state, the linkage rod (3) is farthest from the electromagnetic coil (5), the linkage rod (3) abuts against the power receiving part (83), and the second spring (82) is elastically compressed; in the retracted state, the linkage rod (3) is closest to the electromagnetic coil (5), the linkage rod (3) is separated from the power receiving part (83), and the second spring (82) is at an initial length.

9. The electromagnetic driver according to claim 7, characterized in that: The second end (303) of the linkage rod (3) is formed with a ball head (304), and the center hole (301) passes through the ball head (304); the electrical connection piece (83) is provided with an arc-shaped recess (831) adapted to the ball head (304), and the ball head (304) can abut against and partially sink into the arc-shaped recess (831); The insertion tube (80) and the cylindrical portion (11) are sealed and plugged into each other, and the insertion depth of the insertion tube (80) can be adjusted.

10. An electromagnetic coil assembly, characterized in that: Comprising the electromagnetic driver as described in any one of claims 1-9.

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