An electromagnetic driver and an electromagnetic coil assembly

Abstract

The present invention discloses an electromagnetic driver and an electromagnetic coil assembly, which include a support base, a magnetic attraction base, two linkage rods and an electromagnetic coil. The support base and the electromagnetic coil are installed at intervals, and the magnetic attraction base is located between the support base and the electromagnetic coil. Both of the two linkage rods are fixedly installed on the magnetic attraction base. Power connection terminals are installed on both of the two linkage rods and are electrically connected to the electromagnetic coil. The two linkage rods are slidably connected to the support base and can reciprocally slide in the direction towards the electromagnetic coil. The electromagnetic driver and the electromagnetic coil assembly further include an external connection base, which is installed on the support base. The external connection base includes two power connection members, and the two power connection members are respectively arranged opposite to the two linkage rods. An elastic member is installed between the magnetic attraction base and the electromagnetic coil. The elastic member is used for elastically driving the linkage rods to slide until they are in contact and conduction with the power connection members. Through the acting forces of the electromagnetic coil and the elastic member, the present invention can realize the reciprocating drive of the magnetic attraction base and the linkage rods, and realize the pulsed action output.

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 pulsed pumps usually use mechanical motors or cylinder drives as power, and the internal power mechanism and actuator are used in combination with each other, resulting in a relatively large number of overall components and a large volume.

[0003] Some pulsed pumps also adopt an electromagnetic structure. In order to achieve a pulsed driving action, a controller and an electromagnetic driver are combined to achieve it. Among them, the controller can control the generation of a pulsed signal, and the electromagnetic driver can generate a driving action. The two are combined to control the electromagnetic driver to generate a pulsed driving action, and thus a pulsed action output can be generated. The current electromagnetic pulsed pump is restricted by the controller and needs to cooperate with a pulsed signal 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 above-mentioned prior art and provide an electromagnetic driver and an electromagnetic coil assembly.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An electromagnetic driver includes a support base, a magnetic attraction base, two linkage rods, and an electromagnetic coil. The support base and the electromagnetic coil are installed at intervals, the magnetic attraction base is located between the support base and the electromagnetic coil, both of the two linkage rods are fixedly installed on the magnetic attraction base, and power connection terminals are installed on both of the two linkage rods and are electrically connected to the electromagnetic coil; the two linkage rods are slidably connected to the support base and can reciprocally slide toward the direction of the electromagnetic coil;

[0008] It further includes an external connection base installed on the support base. The external connection base includes two power connection members, and the two power connection members are respectively arranged opposite to the two linkage rods; an elastic member is installed between the magnetic attraction base and the electromagnetic coil, and the elastic member is used to elastically drive the linkage rod to slide until the linkage rod contacts and conducts with the power connection member; when the electromagnetic coil is conducted, it can magnetically adsorb the magnetic attraction base, drive the linkage rod and the power connection member to be disconnected from each other, and elastically compress the elastic member.

[0009] The present invention is further configured such that the elastic member includes an elastic bladder capable of elastic expansion, and a first spring is disposed inside the elastic bladder; the inside of the elastic bladder is hollow, and two first interfaces and one second interface are disposed on the side of the elastic bladder facing the support seat; one-way valves are disposed in both the first interface and the second interface, and the one-way valve of the first interface can conduct unidirectionally towards the outside of the elastic bladder, and the one-way valve of the second interface can conduct unidirectionally towards the inside of the elastic bladder.

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

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

[0012] The present invention is further configured such that a limiting snap ring is fixedly connected to the outside of the linkage rod extending into the cylindrical portion.

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

[0014] The present invention is further configured such that the elastic bladder includes a first support side and a second support side, the first support side and the second support side face the support seat and the electromagnetic coil respectively, and the first spring elastically presses between the first support side and the second support side.

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

[0016] The present invention is further configured such that the external connection seat includes two insertion tubes, the two insertion tubes are respectively inserted into the openings of the two cylindrical portions, an inner support portion is fixedly connected to the inner wall of the insertion tube, the power connection member is located on the side of the insertion tube facing the linkage rod and is axially slidably connected to the insertion tube; a second spring is disposed between the inner support portion and the power connection member, and both ends of the second spring are fixedly connected to the inner support portion and the power connection member respectively.

[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 abuts against the power connection member, 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 member, 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 central hole penetrates through the ball head; the power connection member is provided with an arc-shaped depression adapted to the ball head, and the ball head can abut against and partially sink into the arc-shaped depression;

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

[0020] The present invention also provides an electromagnetic coil assembly, which is characterized in that it includes the above-mentioned electromagnetic driver. Through the acting force of the electromagnetic coil and the elastic member, the reciprocating drive of the magnetic attraction seat and the linkage rod can be realized, and the pulsed action output can be realized.

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

[0022] By fixedly connecting two linkage rods to the magnetic attraction seat and slidingly connecting the two linkage rods to the support seat, the two linkage rods can reciprocally slide toward the direction of the electromagnetic coil. Both of the two linkage rods are provided with power connection terminals and are electrically connected to the electromagnetic coil. The two linkage rods not only serve as action components but also as power connection components, and can simultaneously realize the drive action and the on-off power switching during the reciprocating sliding process.

[0023] By providing a hollow elastic bladder and combining it with a tubular linkage rod, the transportation of the liquid in the elastic bladder can be realized, and the pulsed output of the liquid can be realized during the operation of the electromagnetic driver.

[0024] By using the second spring to elastically support the power connection member, the power connection member can have a certain elastic floating space. During the retraction process of the linkage rod, the state where the first end of the linkage rod is in contact with the power connection member can be maintained, and the magnetic attraction acting force can be continuously provided, thereby being able to maintain a stable pumping drive acting force for a period of time, so that the electromagnetic driver can provide a stable pulsed power output.

[0025] By pumping the liquid from the first end of the linkage rod, a buffering acting force can be provided for the retraction action of the electromagnetic driver, thereby being able to slow down the retraction rate of the elastic bladder being squeezed, being able to provide a continuous and stable pumping power, and avoiding excessive pumping pressure. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the electromagnetic driver in this embodiment in the state where the elastic bladder is not installed;

[0027] Figure 2 It is a perspective view of the electromagnetic driver in this embodiment;

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

[0029] Figure 4 Explosion diagram of the electromagnetic drive in this embodiment;

[0030] Figure 5 Cross-sectional view of the electromagnetic drive in the state without the external seat installed in this embodiment;

[0031] Figure 6 Cross-sectional view of the elastic capsule in this embodiment;

[0032] Figure 7 Cross-sectional view of the electromagnetic drive in this embodiment with the linkage rod in the extended state;

[0033] Figure 8 Partial structural schematic diagram of the linkage rod and the external seat in this embodiment, with the linkage rod in the retracted state;

[0034] Figure 9 Cross-sectional view of the elastic capsule in the compressed state of the electromagnetic drive in this embodiment.

[0035] Reference numerals: support seat 1; cylindrical part 11; end cover part 12; through hole 13; open end 14; sealing part 15; guide hole 16; magnetic attraction seat 2; mounting hole 21; guide rod 22; linkage rod 3; annular convex part 31; insulating connection piece 32; limit snap ring 33; central hole 301; first end 302; second end 303; spherical head part 304; electrical connection terminal 4; wire 41; electromagnetic coil 5; elastic capsule 6; interface one 61; interface two 62; first spring 63; limit retaining ring 64; one-way valve 65; first support side 601; second support side 602; conduit 7; external seat 8; insertion tube 80; inner support part 81; second spring 82; electrical connection part 83; arc-shaped depression 831; communication hole 832. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] This embodiment discloses an electromagnetic drive. Referring to Figures 1-9 as shown, it includes a support seat 1, a magnetic attraction seat 2, two linkage rods 3, and an electromagnetic coil 5. The support seat 1 and the electromagnetic coil 5 are installed at intervals and are fixedly installed through a support component.

[0038] Referring to Figures 1-4As shown, the magnetic attraction seat 2 is located between the support seat 1 and the electromagnetic coil 5. The magnetic attraction seat 2 has a disc-shaped structure and is in a movable state. When the electromagnetic coil 5 is energized, a magnetic force can be generated on the magnetic attraction seat 2, enabling it to approach the electromagnetic coil 5. Both of the two linkage rods 3 are fixedly installed on the magnetic attraction seat 2, and the two linkage rods 3 and the magnetic attraction seat 2 can move synchronously.

[0039] The two linkage rods 3 are slidably connected to the support seat 1 and can reciprocally slide in the direction towards the electromagnetic coil 5. Both of the two linkage rods 3 are equipped with electrical connection terminals 4 and are electrically connected to the electromagnetic coil 5. The two linkage rods 3 not only serve as acting components but also as electrical connection components, and can simultaneously achieve driving actions and on-off switching during the reciprocating sliding process.

[0040] Specifically, a ring convex portion 31 is integrally formed on the outer periphery of the linkage rod 3. The linkage rod 3 passes through the mounting hole 21 on the magnetic attraction seat 2, and an insulating connection piece 32 is installed between the ring convex portion 31 and the magnetic attraction seat 2 to bond and fix the linkage rod 3, the insulating connection piece 32, and the magnetic attraction seat 2. The electrical connection terminal 4 is fixedly installed on the outside of the linkage rod 3, and the electrical connection terminal 4 is connected to the electromagnetic coil 5 through a wire 41.

[0041] Refer to Figure 4 、 Figure 5 As shown, an elastic member is installed between the magnetic attraction seat 2 and the electromagnetic coil 5. The elastic member has elasticity and can elastically drive the linkage rod 3 to slide until the linkage rod 3 contacts and conducts with the electrical connection member 83. When the electromagnetic coil 5 is conducted, it can magnetically adsorb the magnetic attraction seat 2, drive the linkage rod 3 to disconnect from the electrical connection member 83, and elastically compress the elastic member. Through the actions of the electromagnetic coil 5 and the elastic member, the reciprocating drive of the magnetic attraction seat 2 and the linkage rod 3 can be realized, and the action output of the electromagnetic driver can be achieved.

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

[0043] Refer to Figure 7 、 Figure 8As shown, when the power connection member 83 is de-energized, under the elastic driving action of the elastic member, the magnetic attraction seat 2 and the two linkage rods 3 move upward. The end of the linkage rod 3 abuts against and contacts the power connection member 83 in the external connection seat 8, and the electromagnetic driver does not work. When the power connection member 83 is energized, since the power connection member 83 abuts against the linkage rod 3, at this time, the linkage rod 3 is in an energized state, and the electromagnetic coil 5 is also energized to generate magnetism. The electromagnetic coil 5 can magnetically adsorb the magnetic attraction seat 2 and move in the direction of the electromagnetic coil 5 against the elastic force of the elastic member until the linkage rod 3 is separated from the power connection member 83. At this time, the electromagnetic coil 5 is de-energized and demagnetized, and the elastic member will elastically push the magnetic attraction seat 2 and the two linkage rods 3 upward again until the end of the linkage rod 3 abuts against and contacts the power connection member 83 in the external connection seat 8, and the electromagnetic coil 5 will be energized to generate magnetism again, so that the magnetic attraction seat 2 and the two linkage rods 3 of the electromagnetic driver can produce reciprocating sliding actions.

[0044] Referring to Figure 5 、 Figure 6 As shown, the elastic member includes an elastic bladder 6 that can elastically expand. The elastic bladder 6 is hollow inside and is provided with a first spring 63. Through the self-elasticity of the elastic bladder 6 and the elasticity of the first spring 63, an elastic acting force is jointly generated. Two first interfaces 61 and a second interface 62 are arranged on one side of the elastic bladder 6 facing the support seat 1. Check valves 65 are arranged in both the first interface 61 and the second interface 62. Moreover, the check valve 65 of the first interface 61 can conduct unidirectionally towards the outside of the elastic bladder 6, and the check valve 65 of the second interface 62 can conduct unidirectionally towards the inside of the elastic bladder 6.

[0045] The elastic bladder 6 includes a first support side 601 and a second support side 602. Both the first support side 601 and the second support side 602 are planar structures. The first support side 601 and the second support side 602 face the support seat 1 and the electromagnetic coil 5 respectively. The first interface 61 is located on the first support side 601, and the second interface 62 is located on the second support side 602. The first spring 63 elastically abuts between the first support side 601 and the second support side 602. Limit retaining rings 64 are fixedly connected to the inner sides of both the first support side 601 and the second support side 602. The end of the first spring 63 can be embedded into the inner circumference of the limit retaining ring 64, so as to limit the first spring 63 and maintain the stability of the installation structure of the first spring 63.

[0046] The elastic bladder 6 is located between the electromagnetic coil 5 and the magnetic attraction seat 2. During the reciprocating movement of the magnetic attraction seat 2, an extrusion effect will be generated on the elastic bladder 6. When being subjected to the extrusion effect, the liquid can be sucked into the elastic bladder 6 from the second interface 62 and then be extruded outwards from the first interface 61, realizing the unidirectionality of the liquid in the elastic bladder 6 and realizing the pumping action of the liquid.

[0047] Referring to 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 is provided with a central hole 301 penetrating both ends. The two first interfaces 61 are respectively communicated with the second ends 303 of the two linkage rods 3. The liquid pumped out from the elastic bladder 6 can respectively enter the two linkage rods 3, and can flow along the linkage rods 3 from the second ends 303 of the linkage rods 3 to the first ends 302. The second interface 62 is connected with a conduit 7, and the liquid can be sucked from the conduit 7 to realize the transportation and circulation of the liquid.

[0048] Referring to Figure 4 、 Figure 5 、 Figure 7 As shown, the support base 1 includes two cylindrical parts 11, and the two cylindrical parts 11 are fixedly connected side by side. 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, and the linkage rod 3 is hermetically and slidably connected in the through hole 13, and the first end 302 extends into the cylindrical part 11. An external socket 8 can be inserted and installed at the opening 14.

[0049] An external limiting snap ring 33 is fixedly connected to the outside of the linkage rod 3 extending into the cylindrical part 11. The limiting snap ring 33 is clamped and fixed on the outer periphery of the linkage rod 3 and can perform stroke limiting outside the linkage rod 3. Specifically, during the sliding process of the linkage rod 3 relative to the support base 1, the stroke on one side is blocked and limited by the limiting snap ring 33, and the stroke on the other side is blocked and limited by the magnetic attraction seat 2.

[0050] In order to maintain the sliding stability of the magnetic attraction seat 2, a guiding rod 22 is fixedly connected to the side of the magnetic attraction seat 2 facing the support base 1, and the guiding rod 22 is arranged parallel to the linkage rod 3. A guiding hole 16 is provided in the support base 1, and the guiding rod 22 is slidably connected in the guiding hole 16 and can perform sliding guiding, so that there are three sliding guiding points between the magnetic attraction seat 2 and the support base 1, ensuring the stability of the sliding structure.

[0051] Referring to Figure 5 、 Figure 7 As shown, in this embodiment, the external socket 8 includes two insertion tubes 80, and the two insertion tubes 80 are respectively inserted into the openings 14 of the two cylindrical parts 11. The insertion tube 80 and the cylindrical part 11 are hermetically inserted into each other. Specifically, a plurality of sealing parts 15 are formed between the inner periphery of the opening 14 of the cylindrical part 11 and the outer periphery of the insertion tube 80, which can realize the sliding sealing of the insertion tube 80. By adjusting the insertion and extraction of the insertion tube 80, the insertion depth of the insertion tube 80 can be adjusted, and further the position of the internal electrical component 83 in the insertion tube 80 can be appropriately adjusted to finely adjust the action condition of the electromagnetic driver.

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

[0053] Further, an inner support portion 81 is fixedly connected to the inner wall of the intubation tube 80. The inner support portion 81 has a convex ring-shaped structure, and the electrical connection member 83 is located on the side of the intubation tube 80 facing the linkage rod 3. Moreover, the size of the electrical connection member 83 is adapted to the inner diameter of the intubation tube 80, and the electrical connection member 83 can be axially slidably connected to the intubation tube 80.

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

[0055] Refer to Figure 7 As shown, when the linkage rod 3 is in the upward extended state, the upper end (the first end 302) of the linkage rod 3 can be in a state of mutual abutment with the electrical connection member 83. The electrical connection member 83 and the linkage rod 3 are electrically connected to each other. The electromagnetic coil 5 is energized to generate a magnetic adsorption force, and the linkage rod 3 and the magnetic attraction seat 2 start to move downward. During the reciprocating movement of the linkage rod 3, the linkage rod 3 has an extended state and a retracted state. Among them, the extended state is the farthest from the electromagnetic coil 5, and the retracted state is the closest to the electromagnetic coil 5.

[0056] Refer to 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 electrical connection member 83, and the second spring 82 is in a compressed state.

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

[0058] During the process of the linkage rod 3 moving from the extended state to the retracted state, due to the continuous application of the magnetic acting force by the electromagnetic coil 5 during the previous retraction action, although a stable and continuous driving force can be generated, an excessive driving force may cause the pumping speed to be too fast and the pressure inside the elastic capsule 6 to be too high.

[0059] The second end 303 of the linkage rod 3 is formed with a spherical head 304, and the central hole 301 penetrates through to the spherical head 304. The electricity connection member 83 is provided with an arc-shaped recess 831 adapted to the spherical head 304, and the spherical 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 electricity connection member 83, the surface of the spherical head 304 abuts against the surface of the arc-shaped recess 831. On the outer periphery of the electricity connection member 83, a communication hole 832 penetrating through both ends is provided at a position corresponding to the outer periphery of the arc-shaped recess 831, which can allow the liquid on both sides of the electricity connection member 83 to flow through.

[0060] During the process of the linkage rod 3 moving from the extended state to the retracted state, the elastic bladder 6 generates a squeezing force, and the liquid in the bladder can flow along the interface 61 and the central hole 301 of the linkage rod 3 to communicate in the direction of the end opening at the spherical head 304 of the linkage rod 3. The liquid output from the first end 302 of the linkage rod 3 is input between the spherical head 304 and the arc-shaped recess 831, and the entering liquid can generate a repulsive force on the spherical head 304 and the arc-shaped recess 831, so that a small gap can be generated between the surface of the spherical head 304 and the arc-shaped recess 831. At the moment when the gap is generated, the two do not contact, the electromagnetic coil 5 is powered off and demagnetized, and then they contact again under the action of the spring and continue to move towards 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, and thus can slow down the retraction rate of the elastic bladder 6 being squeezed, and can provide a continuous and stable pumping power.

[0062] This embodiment also discloses an electromagnetic coil assembly, which is characterized in that it includes the electromagnetic driver as described above. Through the acting force of the electromagnetic coil 5 and the elastic member, the reciprocating driving of the magnetic attraction seat 2 and the linkage rod 3 can be realized, and the action output of the electromagnetic driver can be realized.

[0063] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made 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, two interfaces 1 (61) are arranged on the side of the elastic bag (6) facing the support seat (1), and one interface 2 (62) is arranged on the side of the elastic bag (6) facing the electromagnetic coil (5); 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 first end (302) of the linkage rod (3) is formed with a ball head (304), and the central 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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