Conductive sponge mounting pen

Abstract

The utility model relates to a kind of electrically-conductive sponge installation pen, including outer tube, elastic clamp, prop open column and spring, elastic clamp includes main rod and multiple elastic clamp claws, main rod and prop open column are coaxial and movably housed in outer tube, each elastic clamp claw is connected to the front end of main rod and is distributed around prop open column, multiple let-out holes are equipped in the front end of outer tube, each elastic clamp claw respectively extends from each let-out hole;The axis of spring is parallel to the axis of main rod, and the both ends of spring respectively abut with prop open column and outer tube front end. The installation pen provided by the utility model can reliably clamp electrically-conductive sponge and install electrically-conductive sponge to electroencephalogram electrode by the prop opening and recovery of elastic clamp, effectively improve electrically-conductive sponge installation efficiency, reduce the labor intensity of medical staff. Whether it is to install electrically-conductive sponge one by one or to carry out supplementary installation by the installation pen after batch installation of electrically-conductive sponge, the above installation pen can reliably complete the installation operation of electrically-conductive sponge.

Description

Technical Field

[0001] This utility model belongs to the field of brain-computer interface technology, specifically relating to a conductive sponge mounting pen. Background Technology

[0002] High-lead wet electrode EEG caps have two distinct characteristics: firstly, they have a high number of leads, such as 512 or 1024, meaning 512 / 1024 electrodes are arranged inside the cap; secondly, they are wet electrode caps, meaning each electrode tip requires a conductive sponge saturated with saline solution. Currently, the conductive sponges are installed manually one by one, lacking the necessary tools, and the small spacing between electrodes further complicates the process. Therefore, existing methods of installing conductive sponges suffer from operational inconvenience, poor installation results, high labor intensity for medical staff, and low operational efficiency. Utility Model Content

[0003] This utility model relates to a conductive sponge mounting pen, which can at least solve some of the defects of the prior art.

[0004] This utility model relates to a conductive sponge mounting pen, comprising an outer cylinder, an elastic clip, a spreading post, and a spring. The elastic clip includes a main rod and multiple elastic claws. The main rod and the spreading post are coaxial and movably housed within the outer cylinder. Each elastic claw is connected to the front end of the main rod and distributed around the spreading post. Multiple clearance holes are provided at the front end of the outer cylinder, and each elastic claw extends out from each clearance hole. The axis of the spring is parallel to the axis of the main rod, and both ends of the spring abut against the spreading post and the front end of the outer cylinder, respectively.

[0005] As one implementation method, the supporting column is shaped like a frustum, with its cross-sectional area gradually increasing from back to front.

[0006] As one implementation, each elastic gripper is distributed on the same common conical surface, which is coaxial with the spreading column and has the same tapering direction. The rear ends of each elastic gripper are located on the same common circle, and the diameter of the rear end of the spreading column is smaller than the diameter of the common circle.

[0007] As one embodiment, the main rod includes a constraint section and a guide section. The constraint section has a structure that tapers from front to back. Each elastic gripper is connected to the front end of the constraint section, and the guide section is connected to the rear end of the constraint section.

[0008] As one embodiment, the outer cylinder includes a front cylinder body suitable for accommodating the constraint section and a rear cylinder body connected to the rear end of the front cylinder body, wherein the inner diameter of the front end of the rear cylinder body is smaller than the outer diameter of the front end of the constraint section.

[0009] As one embodiment, the elastic gripper includes a gripping end and an elastic gripping arm, and the gripping end and the elastic gripping arm are connected to form an L-shaped structure.

[0010] As one embodiment, the front end of the spreading column extends forward to form a first guide column, and the spring is sleeved on the first guide column; and / or, a second guide column is provided inside the outer cylinder, and the spring is sleeved on the second guide column.

[0011] As one embodiment, a limiting seat is provided on the inner wall of the front end of the outer cylinder, and the limiting seat protrudes backward from the inner wall of the front end of the outer cylinder; a limiting part is correspondingly provided on the spreading column, the limiting part is opposite to the limiting seat, and when the two are in contact, the compression of the spring is less than its maximum compression.

[0012] As one embodiment, the limiting seat is provided with a limiting hole, and the limiting part is provided with a limiting pin. When the limiting part contacts the limiting seat, the limiting pin is inserted into the limiting hole.

[0013] As one embodiment, the conductive sponge mounting pen also includes an actuator connected to the rear end of the main rod.

[0014] This invention has at least the following beneficial effects: The installation pen provided by this invention, through the opening and retraction of the elastic clip, can reliably hold the conductive sponge and install it onto the brain electrode, effectively improving the efficiency of conductive sponge installation and reducing the labor intensity of medical staff. This invention specifically designs a conductive sponge installation pen that can reliably complete the installation operation of conductive sponges, whether installing them one by one or performing supplementary installations after batch installation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the EEG cap provided in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram showing the interaction between the conductive sponge and the electrode.

[0018] Figure 3 This is a schematic diagram showing the connection of each electrode sub-region provided in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the EEG cap after being flipped over, as provided in an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of installing a conductive sponge product onto an EEG cap.

[0021] Figure 6 This is a schematic diagram of the structure of the conductive sponge product provided in an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the conductive sponge mounting pen provided in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the elastic clip 52 provided in an embodiment of the present invention;

[0024] Figure 9 A cross-sectional view of a conductive sponge mounting pen provided in an embodiment of this utility model;

[0025] Figure 10 for Figure 9 An enlarged schematic diagram of part A in the middle. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1

[0028] like Figure 5 and Figure 6 This utility model provides a conductive sponge product 30 for an EEG cap, including a packaging substrate 31 and a sealing layer. The packaging substrate 31 has a plurality of encapsulation grooves 33 formed thereon. The layout of the encapsulation grooves 33 on the packaging substrate 31 matches the electrode layout on the electrode sub-section 4 of the EEG cap. Each encapsulation groove 33 contains a conductive sponge 3. The sealing layer is detachably disposed on the surface of the packaging substrate 31 and closes each of the encapsulation grooves 33.

[0029] In one embodiment, the packaging substrate 31 is a plastic part, more preferably a component made of blister material, including but not limited to PETG parts / APET parts, etc.

[0030] Preferably, the packaging groove 33 is integrally formed with the packaging substrate 31, which is easy to achieve for blister / blow-molded / injection-molded parts.

[0031] In this embodiment, the openings of the encapsulation grooves 33 are all located on the same side surface of the packaging substrate 31, and the openings of the conductive sponge 3 face the corresponding openings of the encapsulation grooves 33. After the sealing layer is separated, the conductive sponge 3 can be easily fitted onto the electrode 2. In one embodiment, such as Figure 5 and Figure 6 The opening of the encapsulation groove 33 is located on one side surface of the packaging substrate 31, and the other end of the encapsulation groove 33 protrudes from the other side surface of the packaging substrate 31. The packaging substrate 31 does not need to be too thick.

[0032] In one embodiment, the aforementioned sealing layer is release paper 32, which is attached to the surface of the packaging substrate 31. When in use, the release paper 32 is torn off to allow the installation of the conductive sponge 3.

[0033] The aforementioned conductive sponge 3 is a component suitable for installation on the electrode 2 of the EEG cap. In one embodiment, the encapsulation groove 33 is filled with physiological saline. In this way, the conductive sponge 3 is immersed in physiological saline, ensuring that the conductive sponge 3 installed at the end of the electrode 2 is saturated with physiological saline, which can improve the acquisition effect of EEG signals. In addition, the surface tension of physiological saline can cause the conductive sponge 3 to be adsorbed in the encapsulation groove 33, thereby preventing the conductive sponge 3 from detaching from the encapsulation groove 33 after the sealing layer separates.

[0034] Preferably, the shape of the encapsulation groove 33 matches the shape of the conductive sponge 3, and the size of the encapsulation groove 33 matches the size of the conductive sponge 3. The conductive sponge 3 and the encapsulation groove 33 can be in a clearance fit, but preferably, the size of the encapsulation groove 33 is designed such that the conductive sponge 3 is slightly compressed and accommodated within it (for example, the encapsulation groove 33 is a stepped shaft groove adapted to the conductive sponge 3, with the cross-sectional diameter of each part of the encapsulation groove 3 slightly smaller than the corresponding cross-sectional diameter of the conductive sponge 3, or the diameter of the large groove segment at the groove opening is slightly smaller than the corresponding cross-sectional diameter of the conductive sponge 3). This utilizes the flexibility of the conductive sponge 3 to ensure its stability within the encapsulation groove 33, preventing the conductive sponge 3 from detaching from the encapsulation groove 33 after the sealing layer separates.

[0035] Preferably, the surface of the packaging substrate 31 where the sealing layer is located is a concave spherical surface. When installing the conductive sponge 3, based on the good tensile strength and elasticity of the EEG cap, the EEG cap is flipped over and placed on a hemispherical fixture, so that the EEG cap is hemispherical and the electrodes 2 face outwards, while the corresponding surface of the packaging substrate 31 is a concave spherical surface. This allows the packaging substrate 31 to fit snugly against the surface of the EEG cap, ensuring the installation effect of the conductive sponge 3.

[0036] In one embodiment, such as Figure 5 and Figure 6 The packaging substrate 31 is spherical, and the sealing layer is disposed on the spherical center side surface of the packaging substrate 31, which can better fit the spherical electrode sub-section 4 of the EEG cap.

[0037] In one embodiment, the edge of the packaging base 31 is provided with an alignment mark 34. By aligning the alignment mark 34 with the alignment mark on the EEG cap, the installation accuracy of the conductive sponge 3 can be ensured and the operation efficiency can be improved.

[0038] In this embodiment, multiple conductive sponges 3 are encapsulated on the packaging substrate 31, and the layout of the encapsulation grooves 33 on the packaging substrate 31 matches the electrode layout on the electrode sub-sections 4 of the EEG cap. This allows all electrodes 2 in an electrode sub-section 4 to be installed with conductive sponges 3 at once, greatly improving the installation efficiency of the conductive sponges 3, significantly shortening the installation time of the electrodes 2 in the wet electrode EEG cap, and reducing the workload of medical staff. In addition, based on the constraint and support function of the encapsulation grooves 33, it can prevent the conductive sponges 3 from collapsing around the edges during installation and failing to fit onto the ends of the electrodes 2.

[0039] In one embodiment, the conductive sponge 3 includes an outer shell layer and an inner lining layer connected to the inner wall of the outer shell layer. The hardness of the outer shell layer is less than that of the inner lining layer. This strengthens the hardness of the inner lining layer and prevents the conductive sponge 3 from collapsing around its perimeter during installation and becoming unable to fit onto the end of the electrode 2.

[0040] Example 2

[0041] like Figures 1-5 This utility model provides an EEG cap, including a cap body 1. The cap body 1 has multiple electrode sub-sections 4, and each electrode sub-section 4 is provided with multiple electrodes 2. The ends of each electrode 2 extend from the inner wall of the cap body 1.

[0042] The EEG cap provided in this embodiment is a wet electrode EEG cap, that is, conductive sponge 3 is also installed on the electrode 2; the conductive sponge 3 on the electrode 2 of each electrode sub-section 4 can be installed using the conductive sponge product 30 provided in the above embodiment 1.

[0043] Preferably, each of the electrode sub-partitions 4 has the same structure. When the conductive sponge product 30 provided in the first embodiment is used, only one type of conductive sponge product 30 needs to be configured, which can reduce production costs. Moreover, since each electrode sub-partition 4 has the same structure, the installation of the conductive sponge 3 does not require error prevention, which can further improve installation efficiency.

[0044] In one embodiment, such as Figures 3-5Each electrode sub-section 4 is equipped with a flexible circuit board 4 (FPCB), and each electrode 2 of the electrode sub-section 4 is connected to the flexible circuit board 4. The use of the flexible circuit board 4 can better match the stretchability and elasticity of the EEG cap, ensuring the application effect of the EEG cap.

[0045] Preferably, electrode 2 is soldered onto flexible circuit board 4.

[0046] Each flexible circuit board 4 can be electrically connected to the same output circuit; in another embodiment, such as Figure 3 Each flexible circuit board 4 is connected at the top of the cap to form an integral circuit board, including but not limited to multiple circuit board petals cut from a circular whole board to form a petal-shaped structure that converges and connects in the middle.

[0047] The flexible circuit board 4 is preferably encased within the cap body 1. In one embodiment, the cap body 1 includes an outer cap layer and an inner cap layer connected together. The flexible circuit board 4 is sandwiched between the outer cap layer and the inner cap layer, and the electrode 2 passes through the inner cap layer, such that the end of the electrode 2 protrudes from the inner wall of the cap body 1. Based on this structure, reliable acquisition of EEG signals is ensured while providing good comfort.

[0048] like Figure 4 and Figure 5 After the cap 1 is flipped over and placed on the hemispherical fixture, each flexible circuit board 4 forms multiple spherical circuit board petals that are sequentially distributed along the circumference of the spherical cap 1. Correspondingly, multiple spherical petal-shaped electrode sub-partitions 4 are formed that are sequentially distributed along the circumference of the spherical cap 1. The aforementioned spherical petal-shaped packaging substrate 31 can be adapted to the spherical circuit board petals.

[0049] The cap body 1 is preferably made of silicone. In the case where the cap body 1 includes an outer cap layer and an inner cap layer, both the outer cap layer and the inner cap layer are made of silicone.

[0050] Example 3

[0051] This utility model embodiment provides a conductive sponge installation pen 5, which can be used for manual / automatic installation of conductive sponge 3. For example, after installing conductive sponge 3 on the EEG cap using the conductive sponge product 30 provided in the above embodiment 1, if there are situations where conductive sponge 3 is not installed on the electrodes 2 or the conductive sponge 3 is not installed properly, the installation pen 5 can be used for supplementary installation. Therefore, the installation pen 5 can be used as a matching installation device for the above conductive sponge product 30.

[0052] like Figures 7-10The conductive sponge pen 5 includes an outer cylinder 51, an elastic clip 52, a spreading column 53, and a spring 54. The elastic clip 52 includes a main rod 521 and multiple elastic claws 522. The main rod 521 and the spreading column 53 are coaxial and movably housed within the outer cylinder 51. Each elastic claw 522 is connected to the front end of the main rod 521 and distributed around the spreading column 53. Multiple clearance holes are provided at the front end of the outer cylinder 51, and each elastic claw 522 extends out from each clearance hole. The axis of the spring 54 is parallel to the axis of the main rod, and both ends of the spring 54 abut against the spreading column 53 and the front end of the outer cylinder 51, respectively.

[0053] The clamping ends of each elastic claw 522 are circular, adapted to clamp the conductive sponge 3 and fit into the groove suitable for inserting into the electrode 2. In the initial state, the diameter of the circle where each clamping end is located is smaller than the diameter of the conductive sponge 3. When the elastic clamp 52 is fully expanded, the diameter of the circle where each clamping end is located is larger than the diameter of the conductive sponge 3. Thus, when the elastic clamp 52 is expanded to a certain extent, the conductive sponge 3 can be clamped by each elastic claw 522.

[0054] The number of elastic grippers 522 is preferably no less than three to ensure gripping stability and reliability. Each elastic gripper 522 is distributed in a ring relative to the main rod axis, preferably evenly spaced.

[0055] In addition to the clamping end, the elastic gripper 522 also includes an elastic clamping arm. Optionally, the clamping end and the elastic clamping arm are connected to form an L-shaped structure, which can improve the clamping effect on the conductive sponge 3.

[0056] like Figure 9 and Figure 10 The expansion column 53 is preferably frustum-shaped with a cross-sectional area that gradually increases from back to front, which can ensure the expansion effect on the elastic gripper 522. The front end of the expansion column 53 is the end that is closer to the front end of the outer cylinder 51 and farther away from the main rod 521. The spring 54 is preferably abutted against the front end of the expansion column 53.

[0057] Furthermore, each elastic gripper 522 is distributed on the same common conical surface, which is coaxial with the aforementioned spreading column 53 and has the same tapering direction. The rear ends of each elastic gripper 522 (i.e., the end connected to the main rod 521) are located on the same common circle, and the diameter of the rear end of the spreading column 53 is smaller than the diameter of this common circle, thus ensuring that the spreading column 53 can spread each elastic gripper 522. Preferably, the front end of the outer cylinder 51 adopts a shape that tapers from front to back to facilitate the arrangement of the elastic grippers 522 and meet the deformation requirements of the elastic grippers 522.

[0058] Wherein, the taper of the aforementioned expanding column 53 is the same as the taper of the aforementioned common conical surface, or the taper of the expanding column 53 is slightly larger than the taper of the aforementioned common conical surface. Specifically, it should satisfy the following: when the elastic clip 52 is driven to the end of its stroke, the angle at which the elastic clip 52 is expanded ensures that it can cover the conductive sponge 3.

[0059] Furthermore, such as Figures 8-10 The main rod 521 includes a constraint section 5211 and a guide section 5212. The constraint section 5211 has a structure that tapers from front to back. Each elastic gripper 522 is connected to the front end of the constraint section 5211, and the guide section 5212 is connected to the rear end of the constraint section 5211. The outer cylinder 51 includes a front cylinder 511 suitable for accommodating the constraint section 5211 and a rear cylinder 512 connected to the rear end of the front cylinder 511. The inner diameter of the front end of the rear cylinder 512 is smaller than the outer diameter of the front end of the constraint section 5211. When the elastic clamp 52 retracts, the interference between the constraint section 5211 and the rear cylinder 512 can create a limiting effect, allowing the opened elastic clamp 52 to retract and controlling the retraction stroke of the elastic clamp 52 to prevent the elastic clamp 52 from becoming displaced. In addition, based on the above structure, the spring 54 can also be pre-compressed to ensure the effectiveness of the pen 5.

[0060] The guide section 5212 and the rear cylinder 512 are preferably fitted with a clearance fit structure, which can reliably guide the movement of the elastic clamp 52 and ensure that the elastic clamp 52 moves only along the axial direction.

[0061] In one embodiment, such as Figure 9 and Figure 10 A first guide post 531 extends forward from the front end of the spreading post 53, and a spring 54 is sleeved on the first guide post 531. This improves the reliability and smoothness of the movement of the spreading post 53 and prevents the spreading post 53 from separating or becoming misaligned from the spring 54. Preferably, the first guide post 531 and the spring 54 are in a guiding fit, for example, a clearance fit between the first guide post 531 and the inner ring of the spring 54. When the first guide post 531 and the spreading post 53 are designed to be coaxial, the coaxiality between the spreading post 53 and the spring 54 can be improved.

[0062] In one embodiment, such as Figure 9 and Figure 10 A second guide post 513 is provided inside the outer cylinder 51, and a spring 54 is sleeved on the second guide post 513. This improves the reliability and smoothness of the movement of the spreading post 53 and prevents the spring 54 from becoming displaced. Preferably, the second guide post 513 and the spring 54 are in a guiding fit, for example, a clearance fit between the second guide post 513 and the inner ring of the spring 54. Understandably, the second guide post 513 is located on the inner wall of the front end of the outer cylinder 51, extending rearward from the inner wall of the front end of the outer cylinder 51.

[0063] Preferably, such as Figure 9 and Figure 10 A limiting seat 513 is provided on the inner wall of the front end of the outer cylinder 51. The limiting seat 513 protrudes rearward from the inner wall of the front end of the outer cylinder 51 to limit the forward travel of the spreading column 53. Therefore, a first limiting part is provided on the spreading column 53. The limiting seat 513 is opposite to the first limiting part, and when the two are in contact, the compression of the spring 54 is less than its maximum compression. By limiting the forward travel of the spreading column 53, the opening operation of the elastic clip 52 can be facilitated, so that the force for opening the elastic clip 52 mainly comes from the relative force between the spreading column 53 and the elastic clip 52, rather than relying on the elastic force of the spring 54. This reduces the selection requirements of the spring 54 and saves the manufacturing cost of the pen 5.

[0064] Furthermore, a limiting hole 514 is provided on the limiting seat 513, and a limiting pin 532 is provided on the first limiting part (or a limiting pin 532 is provided on the limiting seat 513, and a limiting hole 514 is provided on the first limiting part). As the first limiting part approaches the limiting seat 513, the limiting pin 532 is inserted into the limiting hole 514, which can improve the constraint effect on the spreading column 53, prevent the spreading column 53 from shaking or becoming displaced, and keep the spreading column 53 stationary.

[0065] In particular, when the limiting seat 513 is provided with a limiting hole 514 and the limiting hole 514 passes through the front end of the outer cylinder 51, the limiting hole 514 can also play a role in venting, which facilitates the use of the pen 5.

[0066] When a second guide post 513 is provided inside the outer cylinder 51, the second guide post 513 can be configured as the aforementioned limiting seat 513, and a limiting hole 514 / limiting pin 532 is correspondingly formed on the second guide post 513. When a first guide post 531 is provided on the spreading post 53, the first guide post 531 can be configured as the aforementioned first limiting part, and a limiting hole 514 / limiting pin 532 is correspondingly formed on the first guide post 531.

[0067] In one embodiment, such as Figure 7 , Figure 9 and Figure 10 The aforementioned mounting pen 5 also includes an actuator 55, which is connected to the rear end of the main rod 521. The actuator 55 is operated manually or with the aid of automated equipment to drive the elastic clamp 52 to move. Preferably, the actuator 55 is at least partially located outside the outer cylinder 51, and its exposed portion is provided with a second limiting portion. By interfering with the rear end of the outer cylinder 51 through the second limiting portion, the travel of the elastic clamp 52 can be limited, thus preventing the elastic clamp 522 from being overstretched and damaged.

[0068] The usage of the conductive sponge installation pen 5 is roughly as follows:

[0069] When the actuator 55 is driven, the elastic clamp 52 moves forward, pushing the spreading column 53 forward at the same time. As the moving distance increases, the compression of the spring 54 increases, which increases its reaction resistance on the spreading column 53. Finally, the spreading column 53 reaches a state of equilibrium under the combined action of the elastic force of the spring 54 and the thrust of the elastic clamp 52 and stops moving (or is restricted by the limit seat 513 and stops moving).

[0070] However, the driving force applied to the actuator 55 is not released at this time, so the elastic clamp 52 will continue to move forward; the stationary expansion column 53 will expand the elastic clamp 52, and when the expansion amplitude is slightly greater than that of the conductive sponge 3, it can clamp the conductive sponge 3. When the driving force on the actuator 55 is released, the elastic force of the spring 54 acts on the expansion column 53, and the expansion column 53 retracts, causing the elastic clamp 52 to retract. Due to the limitation of the outer cylinder 51, the expansion amplitude of the end of the elastic clamp 52 decreases, and the conductive sponge 3 is clamped. The rigidity of the conductive sponge 3 itself allows it to resist a certain clamping force and maintain its shape.

[0071] After the conductive sponge 3 is installed onto the end of the electrode 2 using the installation pen 5, the actuator 55 is driven, and the elastic clip 52 continues to move forward and be stretched open, releasing the elastic clip 52 from the conductive sponge 3, which is then released onto the electrode 2. The actuator 55 is then released, and the installation pen 5 returns to its original position, thus completing the installation of the conductive sponge 3 for one electrode 2.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A conductive sponge-mounted pen, characterized in that: The device includes an outer cylinder, an elastic clamp, a spreading column, and a spring. The elastic clamp includes a main rod and multiple elastic claws. The main rod and the spreading column are coaxial and movably housed within the outer cylinder. Each elastic claw is connected to the front end of the main rod and distributed around the spreading column. Multiple clearance holes are provided at the front end of the outer cylinder, and each elastic claw extends out from each clearance hole. The axis of the spring is parallel to the axis of the main rod, and both ends of the spring abut against the spreading column and the front end of the outer cylinder, respectively.

2. The conductive sponge mounting pen as described in claim 1, characterized in that: The supporting column is truncated cone-shaped, with its cross-sectional area gradually increasing from back to front.

3. The conductive sponge mounting pen as described in claim 1, characterized in that: Each elastic gripper is distributed on the same common conical surface, which is coaxial with the spreading column and has the same tapering direction. The rear ends of each elastic gripper are located on the same common circle, and the diameter of the rear end of the spreading column is smaller than the diameter of the common circle.

4. The conductive sponge mounting pen as described in claim 1, characterized in that: The main rod includes a constraint section and a guide section. The constraint section has a structure that tapers from front to back. Each elastic gripper is connected to the front end of the constraint section, and the guide section is connected to the rear end of the constraint section.

5. The conductive sponge mounting pen as described in claim 4, characterized in that: The outer cylinder includes a front cylinder suitable for accommodating the constraint section and a rear cylinder connected to the rear end of the front cylinder, wherein the inner diameter of the front end of the rear cylinder is smaller than the outer diameter of the front end of the constraint section.

6. The conductive sponge mounting pen as described in claim 1, characterized in that: The elastic gripper includes a gripping end and an elastic gripping arm, and the gripping end and the elastic gripping arm are connected to form an L-shaped structure.

7. The conductive sponge mounting pen as described in claim 1, characterized in that: The front end of the spreading column extends forward to form a first guide column, and the spring is sleeved on the first guide column; and / or, the outer cylinder is provided with a second guide column, and the spring is sleeved on the second guide column.

8. The conductive sponge mounting pen as described in claim 1 or 7, characterized in that: A limiting seat is provided on the inner wall of the front end of the outer cylinder, and the limiting seat protrudes backward from the inner wall of the front end of the outer cylinder; a corresponding limiting part is provided on the spreading column, the limiting part is opposite to the limiting seat, and when the two are in contact, the compression of the spring is less than its maximum compression.

9. The conductive sponge mounting pen as described in claim 8, characterized in that: The limiting seat is provided with a limiting hole, and the limiting part is provided with a limiting pin. When the limiting part contacts the limiting seat, the limiting pin is inserted into the limiting hole.

10. The conductive sponge mounting pen as described in claim 1, characterized in that: It also includes an actuator connected to the rear end of the main rod.

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