Corrugation detection kit

Abstract

The utility model discloses a corrugation detection suite, and relates to the technical field of voltage corrugation testing, the corrugation detection suite is used for an oscilloscope probe with a grounding part and a probe, the corrugation detection suite comprises a switching piece and a tested connecting piece, the switching piece is used for being installed on the oscilloscope probe, the switching piece is provided with a first insertion part and a second insertion part, and the first insertion part and the second insertion part are connected with the tested connecting piece. One end of the first insertion part is used for being electrically connected with the probe, one end of the second insertion part is used for being electrically connected with the grounding part, the shapes and / or areas of the cross sections of the first insertion part and the second insertion part are different, and the tested connecting piece is used for being installed on a circuit board to be tested; according to the scheme, the corresponding parallel insertion parts are respectively provided with a large metal sheet and a small metal sheet, the socket holes are arranged corresponding to the shapes of the metal sheets, the formed fool-proof structure can effectively avoid misplug, and meanwhile, the design of the test connecting piece realizes direct plug-in connection in the test process, does not touch other electrical connecting pieces, and is convenient to use. And the safety is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of voltage ripple testing technology, and in particular to a ripple detection kit. Background Technology

[0002] Existing voltage ripple testing devices typically use spring probes. Because they employ a contact-based measurement method and the probe position is relatively fixed, the spring probe's flexibility must be relied upon forcibly adjusted manually or by brute force. Ripple detection is performed while the circuit is live, usually requiring a prolonged period to obtain the maximum value over that time. Therefore, when testing precision equipment, the inability to effectively control the force applied during testing can lead to the spring probe potentially contacting surrounding components, posing a short-circuit risk and potentially damaging the equipment, or even causing safety issues. Utility Model Content

[0003] The main purpose of this invention is to propose a ripple detection kit, which aims to solve the problem that traditional spring probes on oscilloscope probes are unstable and pose certain safety hazards during use.

[0004] To achieve the above objectives, the present invention proposes a ripple detection kit for oscilloscope probes having a grounding portion and a probe. The ripple detection kit includes:

[0005] An adapter for mounting to the oscilloscope probe, the adapter having a first insertion portion and a second insertion portion, one end of the first insertion portion for electrical connection to the probe, and one end of the second insertion portion for electrical connection to the ground portion, the first insertion portion and the second insertion portion having different cross-sectional shapes and / or areas; and...

[0006] The test connector is used to be mounted on the circuit board under test. The test connector has two socket portions, which are used to electrically connect to two electrical connection portions on the circuit board under test, respectively. The two socket portions include a first socket portion and a second socket portion.

[0007] The first socket portion is adapted to the first insertion portion, such that the other end of the first insertion portion can only be adapted to the electrical connection portion that is inserted into the first socket portion for electrical connection.

[0008] The second socket portion is adapted to the second insertion portion, such that the other end of the second insertion portion can only be adapted to be inserted into the second socket portion to electrically connect the corresponding electrical connection portion.

[0009] In one embodiment, the tested connector includes:

[0010] A first adapter structure includes a female connector and a male connector that are electrically connected to each other. A first and second socket portions are provided on the female connector. A third and fourth insertion portions are provided on the male connector. The third and fourth insertion portions have different cross-sectional shapes and / or sizes.

[0011] The second adapter structure includes a third socket portion and a fourth socket portion. The third socket portion is adapted to the third insertion portion so that the third insertion portion can only be adapted to the electrical connection portion corresponding to the electrical connection inserted into the third socket portion. The fourth socket portion is adapted to the fourth insertion portion so that the fourth insertion portion can only be adapted to the electrical connection portion corresponding to the electrical connection inserted into the fourth socket portion.

[0012] In one embodiment, the female connector and the male connector are connected by a twisted pair connecting wire, the twisted pair connecting wire including a first wire and a second wire, the first wire being electrically connected to the first socket and the third insertion part, and the second wire being electrically connected to the second socket and the fourth insertion part.

[0013] In one embodiment, both the first insertion portion and the second insertion portion are made of metal sheets, and the cross-sectional shape of both the first insertion portion and the second insertion portion is rectangular, wherein the rectangular cross-sectional area of ​​the first insertion portion is smaller than the rectangular cross-sectional area of ​​the second insertion portion; and / or,

[0014] Both the third insertion part and the fourth insertion part are made of metal sheets, and the cross-sectional shape of both the third insertion part and the fourth insertion part is rectangular, and the rectangular cross-sectional area of ​​the third insertion part is smaller than that of the fourth insertion part.

[0015] In one embodiment, the first insertion part is provided with a connector, the connector is installed at one end of the adapter, the connector is formed with a plurality of conductive parts, the plurality of conductive parts are disposed on the periphery of the probe on the oscilloscope probe, and at least one of the conductive parts is in contact with the probe on the oscilloscope probe.

[0016] In one embodiment, the connector includes a circular plate portion, and a planar end of the circular plate portion is connected to one end of the insertion portion;

[0017] Multiple arc-shaped plates are provided on the other flat end of the circular plate portion, and the arc vertices of the multiple arc-shaped plates are all arranged facing inward of the circular plate portion to form multiple guide portions.

[0018] In one embodiment, a plurality of the arc-shaped plate portions are evenly spaced around the axis of the circular plate portion.

[0019] In one embodiment, one end of the adapter is provided with an opening, the opening being connected to the inner cavity of the adapter, the inner cavity of the adapter being used to accommodate one end of the oscilloscope probe having a probe.

[0020] In one embodiment, the adapter has a notch on its cavity sidewall to form a plurality of fixing plates around the axis of the mounting cavity, and a flexible ring is fitted on the outer sidewall of the plurality of fixing plates near the opening.

[0021] In one embodiment, the first insertion portion is provided with a connector;

[0022] The adapter has a mounting hole at the end away from the opening to connect the inner and outer sides of the mounting cavity, and the connector is located in the mounting hole;

[0023] One end of the second insertion part is disposed on one of the fixed plates, and the end of the second insertion part protrudes from the inner wall of the fixed plate.

[0024] In the technical solution of this utility model, each of the parallel insertion parts is equipped with two metal plates, one large and one small. The socket is designed to correspond to the shape of the metal plates. In actual use, the resulting foolproof structure effectively prevents misinsertion. Simultaneously, the design of the test connector enables direct plug-in connection during testing, preventing contact with other electrical connectors and significantly improving safety. Correspondingly, the related structure includes an extension structure, increasing the practicality and convenience of the entire device. Furthermore, the adapter structure allows the entire structure to be adapted to oscilloscope probe structures of different sizes, further enhancing the versatility of the entire device. Attached Figure Description

[0025] 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 the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of the ripple detection kit provided by this utility model installed on an oscilloscope probe;

[0027] Figure 2 for Figure 1 The structural diagram does not include the adapter.

[0028] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 for Figure 1 A schematic diagram of the intermediate connector.

[0030] Explanation of icon numbers:

[0031] 1. Adapter; 11. Notch; 12. Fixing plate; 13. Mounting hole; 2. First insertion part; 21. Connector; 211. Circular plate; 212. Arc plate; 3. Second insertion part; 4. Tested connector; 41. First adapter structure; 411. Insertion female; 4111. First socket; 4112. Second socket; 412. Insertion male; 4121. Third insertion part; 4122. Fourth insertion part; 42. Second adapter structure; 421. Third socket; 422. Fourth socket; 5. Twisted pair connecting wire; 51. First wire; 52. Second wire; 6. Flexible ring.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Existing voltage ripple testing devices typically use spring probes. Because they employ a contact-based measurement method and have a relatively fixed probe position, the spring probe's flexibility must be relied upon forcibly adjusted manually or by brute force. Ripple detection is performed while the circuit is live, usually requiring a prolonged testing period to obtain the maximum value over that time. Therefore, when testing precision equipment, the inability to effectively control the force during testing can lead to the spring probe potentially contacting surrounding components, posing a short-circuit risk and potentially damaging the equipment, or even causing safety issues. This solution proposes a ripple detection kit to address the problems of poor stability, inconvenience, and safety hazards associated with traditional spring probe structures.

[0037] This utility model proposes a ripple detection kit.

[0038] Please see Figures 1 to 4In one embodiment of this utility model, the ripple detection kit is mainly used on an oscilloscope probe. Conventional probe kits often use spring probes. The spring probe is mounted on the oscilloscope probe housing and connected to the grounding part of the oscilloscope probe, thereby extending the annular grounding part on the side wall of the oscilloscope probe. During the testing process, contact testing can be performed between the spring probe and the probes on the oscilloscope probe and the energized area of ​​the test area of ​​the device under test. This testing method relies on the spring probe's resilience to manually correct it or using brute force to forcibly hold it in place. Typically, the testing state needs to be maintained for a long time to obtain the maximum value over a prolonged period. Therefore, when testing precision equipment, the inability to effectively control the force during testing may cause the spring probe to touch surrounding components, posing a short circuit risk and potentially damaging the precision equipment under test, or even causing safety issues. Considering the above problems, in this embodiment, the ripple detection kit is specifically configured to mainly include two parts: an adapter 1 and a test connector 4. The adapter 1 is installed on the oscilloscope probe and has two insertion parts. One end of the first insertion part 2 is connected to one end of the probe of the oscilloscope probe, and the two are electrically connected. The second insertion part 3 is electrically connected to the grounding part on the peripheral wall of the oscilloscope probe. The mounting part of the adapter 1 is an insulating structure, which can ensure that the first insertion part 2 and the second insertion part 3 are relatively isolated, and ensure that the two insertion parts will not be short-circuited in the oscilloscope probe structure. The tested connector 4 is a matching connection structure for the two aforementioned insertion parts. It is installed on the circuit board under test. During the production process, it can be soldered onto the testing area of ​​the circuit board under test through the production process, or it can be manually soldered when testing is required. The two socket holes on its main structure and the two electrical connection parts (test connection parts) on the circuit board under test are respectively connected. During testing, the two insertion parts are connected to the two socket holes by interlocking. This setting can form a relatively stable connection between the two connection structures. During testing, it is not necessary to apply force continuously to prevent the connection from breaking. In the specific operation process, it can free the operator's hands, improve the convenience of the testing process, and avoid the situation where the test point is easily offset due to force, thus improving the safety of the testing process.Furthermore, the first insertion part 2 and the second insertion part 3 are respectively connected to the probe and ground part of the oscilloscope probe. During the test, they need to form corresponding insertion relationships with the first socket part 4111 and the second socket part 4112. To avoid the situation where the insertion is reversed during manual operation, which would cause a short circuit or prevent measurement, in this embodiment, the first insertion part 2 and the second insertion part 3 are set to have different shapes and / or sizes. The corresponding first socket part 4111 and the second socket part 4112 are also set to correspond to the first insertion part 2. The shape of the first insertion part 2 is designed to match the first insertion part 2, so that the other end of the first insertion part 2 can only be inserted into the first insertion part 4111 to make an electrical connection. The second insertion part 4112 is designed to match the second insertion part 3, so that the other end of the second insertion part 3 can only be inserted into the second insertion part 4112 to make an electrical connection. This achieves a foolproof effect during the testing process and effectively improves the efficiency, ease of operation and safety of the test.

[0039] The test connector 4 includes a first adapter structure 41 and a second adapter structure 42. The first adapter structure 41 is an intermediate connector, mainly used to extend the outer connection end of the second adapter structure 42. When the oscilloscope probe is inconvenient to extend into the test area of ​​the circuit board under test, it can extend the two electrical connection parts of the test area to the outside of the test circuit board. Specifically, the second adapter structure 42 is mounted on the circuit board under test. The second adapter structure 42 is provided with a third socket portion 421 and a fourth socket portion 422. The third socket portion 421 and the fourth socket portion 422 are respectively connected to the two electrical connection parts on the circuit board under test. When the third and fourth sockets 422 on the second adapter structure 42 are respectively connected to the third insertion portion 4121 and the fourth insertion portion 4122 on the male connector 412, the conductivity of the two electrical connections on the second adapter structure 42 can be extended to the female connector 411. A twisted pair wire 5 can be connected between the male connector 412 and the female connector 411. The twisted pair wire 5 is made of twisted copper wire, which avoids interference from external magnetic and electric fields. Specifically, the first wire 51 of the two strands is connected to... The first socket portion 2 and the third insertion portion 4121 are connected, and the second wire 52 is connected to the second socket portion 4122 and the fourth insertion portion 4122. Through the setting of the connecting twisted pair wire 5, the conductive state of the insertion female socket 411 can be fully extended to the outside of the circuit board under test. In the actual testing process, it is only necessary to insert the first insertion portion 2 and the second insertion portion 3 into the first socket portion 4111 and the second socket portion 4112 on the insertion female socket 411 respectively to complete the measurement, which further improves the convenience of measurement. To enable the first insertion part 2 and the second insertion part 3 to complete the test without relying on the aforementioned extension method, in the actual setup process, the shape and / or area of ​​the third insertion part 4121 and the fourth insertion part 4122 are set to be consistent with the first insertion part 2 and the second insertion part 3, respectively. Correspondingly, the third socket part 421 and the fourth socket part 422 are also set in the same way as the first socket part 4111 and the second socket part 4112, respectively. Thus, when the actual measurement conditions of the circuit board under test allow, the first insertion part 2 and the second insertion part 3 can directly form a connection with the third socket part 421 and the fourth socket part 422, thereby providing another more convenient test connection method. In actual testing, the above method can be selected for measurement according to the actual situation of the test circuit board.

[0040] The first insertion part 2 and the second insertion part 3 are conductive components, specifically configured as metal sheet structures with rectangular cross-sectional shapes. The rectangular cross-sectional area of ​​the first insertion part 2 is smaller than that of the second insertion part 3. The extension direction of the middle region of the metal sheet is not specifically limited, as its specific extension shape needs to be set according to the distance between the corresponding insertion holes, or to form a more compact overall state with the oscilloscope probe structure. In actual installation, it is usually necessary to partially bend the middle position between the two ends of the metal sheet. Therefore, the two insertion parts may form various curved shapes. As for the third insertion part 4121 and the fourth insertion part 4122, they are also configured as metal sheets, but the extension length of the two insertion parts can be controlled to be shorter. However, their specific cross-sectional shapes and sizes are still set as described above, corresponding to the first insertion part 2 and the second insertion part 3 respectively.

[0041] Furthermore, it is conceivable that the foolproof effect of the first insertion part 2 and the second insertion part 3 can also be achieved by simply setting the connection ends of the two insertion parts to be different. The same approach can be taken for the third insertion part 4121 and the fourth insertion part 4122. In the actual material selection process, the choice can be made based on the actual cost or the availability of actual production materials.

[0042] The first insertion part 2 is connected to the probe of the oscilloscope probe. To ensure the stability of the connection between the two and to achieve instant connection and disconnection, in this embodiment, a connector 21 is provided at one end of the first insertion part 2 corresponding to the probe. The connector 21 has multiple conductive parts, which are arranged around the periphery of the probe, thereby maximizing the connection stability between the probe and the first insertion part 2. Specifically, the connector 21 includes a circular plate portion 211. One end of the first insertion portion 2 is connected to a horizontal end of the circular plate portion 211. A plurality of arc-shaped plate portions 212 are provided on the other horizontal end of the circular plate portion 211. The arc vertices of the plurality of arc-shaped plate portions 212 are all arranged facing inwards from the circular plate portion 211 to form a plurality of conductive portions. It is conceivable that the disc and the plurality of arc-shaped plate portions 212 are both made of metal material. The plurality of conductive portions are evenly spaced around the axis of the circular plate portion 211 to form an insertion area with an end opening at the middle position of the plurality of arc-shaped plate portions 212. The inner diameter of the insertion area is slightly smaller than the probe diameter of the oscilloscope probe. In actual connection, the probe is inserted into the corresponding arc-shaped side of the plurality of arc-shaped plate portions 212 from one end opening of the insertion area, so that the probe and the sidewall of the plurality of arc-shaped plate portions 212 come into contact, thereby forming a stable and good conduction effect.

[0043] In addition to the specific structure described above, the connector 21 can also be configured as a spring-slider structure. For example, two sliders can be provided on the adapter 1 at the end position corresponding to the probe. The ends of the two sliders are connected to the adapter 1 by springs. The corresponding ends of the two sliders are provided with arc-shaped grooves that correspond to the outer diameter of the probe. In actual connection, the probe can be placed between the two arc-shaped grooves. Through the force of the springs, a stable connection relationship can be maintained between the two sliders and the probe. Connecting the first insertion part to one of the sliders can achieve the above-mentioned connection effect. This can be configured according to the actual situation.

[0044] The adapter 1 is specifically configured with an open end. When actually connected to the oscilloscope probe, the end of the oscilloscope probe with the probe inserted into the inner cavity of the adapter 1 from the open end. The bottom of the inner cavity of the adapter 1 is provided with a mounting hole 13 for accommodating the connector 21. Therefore, when the end of the oscilloscope probe is inserted into the inner cavity of the adapter 1, the probe can form a conductive relationship with the multiple arc plates.

[0045] Meanwhile, to achieve the versatility of the ripple detection kit, the adapter 1 is also configured with a universal fixing structure. Specifically, the adapter 1 has a notch 11 on its cavity sidewall to form multiple fixing plates 12 around the axis of the mounting cavity. The adapter 1 itself is made of plastic material, and the multiple fixing plates 12 are relatively separated, allowing the ends of the multiple fixing plates 12 away from the mounting hole 13 to deform in the radial direction of the oscilloscope probe. Therefore, in actual fixing, after the adapter 1 is fitted onto one end of the oscilloscope probe, the flexible ring 6 can be fixed to the ends of the multiple fixing plates 12 corresponding to the opening, thereby closing the multiple fixing plates 12 and fixing the adapter 1 onto the oscilloscope probe. In actual setup, the inner diameter of the adapter 1 can be set relatively large relative to the oscilloscope probe, so that the adapter 1 can be installed on various sizes of oscilloscope probes in the above manner. In addition, one end of the second insertion part 3 is disposed on one of the fixed plate parts 12, and the end of the second insertion part 3 protrudes from the inner wall of the fixed plate. When the end of the fixed plate deforms and attaches to the outer wall of the oscilloscope probe, one end of the second insertion part 3 can contact the grounding part on the side wall of the oscilloscope probe, thereby forming an electrical conduction relationship between the two.

[0046] It is conceivable that the aforementioned adapter 1 can deform to a certain extent, and together with the flexible ring 6, it can achieve a universal fixing effect. Through the above structural design, when the flexible ring 6 plays a fixing role, it ensures a stable connection between the adapter 1 and the oscilloscope probe, thereby guaranteeing the conductivity between the insertion part and the corresponding connection part. In practical applications, the above structure not only enables quick installation but also provides quick disassembly, balancing versatility and convenience. Furthermore, in addition to the above embodiments, the adapter 1 can also be configured as a rubber structure, depending on the actual situation.

[0047] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wave detection kit for an oscilloscope probe having a ground and a probe, characterized by, The wave detection kit comprises: An adapter is arranged on the oscilloscope probe, and the adapter is provided with a first insertion part and a second insertion part, one end of the first insertion part is electrically connected with the probe, one end of the second insertion part is electrically connected with the grounding part, and the cross-sectional shape and / or area size of the first insertion part and the second insertion part are different; and A measured connector is arranged on the circuit board to be measured, and the measured connector is provided with two socket hole parts, and the two socket hole parts are electrically connected with two electrical connection parts on the circuit board to be measured respectively, and the two socket hole parts comprise a first socket hole part and a second socket hole part; The first socket hole part is adapted to the first insertion part, so that the other end of the first insertion part can only be inserted into the first socket hole part to be electrically connected with the corresponding electrical connection part; The second socket hole part is adapted to the second insertion part, so that the other end of the second insertion part can only be inserted into the second socket hole part to be electrically connected with the corresponding electrical connection part.

2. The moire detection kit of claim 1, wherein, The measured connector comprises: A first adapter structure comprises an insertion female seat and an insertion male head which are electrically connected with each other, the first socket hole part and the second socket hole part are arranged on the insertion female seat, a third insertion part and a fourth insertion part are arranged on the insertion male head, and the cross-sectional shape and / or area size of the third insertion part and the fourth insertion part are different; and A second adapter structure is provided with a third socket hole part and a fourth socket hole part, the third socket hole part is adapted to the third insertion part, so that the third insertion part can only be inserted into the third socket hole part to be electrically connected with the corresponding electrical connection part, and the fourth socket hole part is adapted to the fourth insertion part, so that the fourth insertion part can only be inserted into the fourth socket hole part to be electrically connected with the corresponding electrical connection part.

3. The moire detection kit of claim 2, wherein, The insertion female seat and the insertion male head are connected through a twisted connection wire, the twisted connection wire comprises a first wire body and a second wire body, the first wire body is electrically connected with the first socket hole part and the third insertion part, and the second wire body is electrically connected with the second socket hole part and the fourth insertion part.

4. The moire detection kit of claim 2, wherein, The first insertion part and the second insertion part are both arranged as metal sheets, the cross-sectional shape of the first insertion part and the second insertion part is rectangular, and the rectangular cross-sectional area of the first insertion part is smaller than that of the second insertion part; and / or The third insertion part and the fourth insertion part are both arranged as metal sheets, the cross-sectional shape of the third insertion part and the fourth insertion part is rectangular, and the rectangular cross-sectional area of the third insertion part is smaller than that of the fourth insertion part.

5. The moire detection kit of claim 1, wherein, The first insertion part is provided with a connector, the connector is arranged on one end of the adapter, a plurality of guide parts are formed on the connector, the plurality of guide parts are arranged on the side of the probe on the oscilloscope probe, and at least one guide part is in contact with the probe on the oscilloscope probe.

6. The moire detection kit of claim 5, wherein, The connector comprises a circular plate part, one planar end of the circular plate part is connected with one end of the insertion part. A plurality of arc-shaped plate portions are arranged on the other flat end of the circular plate portion, and the vertices of the arc-shaped plate portions are all arranged towards the inside of the circular plate portion to form a plurality of the guide connecting portions.

7. The moire detection kit of claim 6, wherein, The plurality of arc-shaped plate portions are uniformly arranged around the axis of the circular plate portion.

8. The moire detection kit of claim 1, wherein, One end of the adapter is provided with an opening portion connected to the inner cavity of the adapter, and the inner cavity of the adapter is used to accommodate one end of the probe of the oscilloscope probe having a probe.

9. The moire detection kit of claim 8, wherein, A plurality of fixed plate portions are formed around the axis of the mounting inner cavity on the side wall of the cavity of the adapter, and a flexible ring is sleeved on the outer side wall of the opening portion close to the plurality of fixed plate portions.

10. The moiré detection kit of claim 9, wherein, The first insertion portion is provided with a connecting piece; One end of the adapter away from the opening portion is provided with a mounting hole to connect the inner and outer sides of the mounting cavity, and the connecting piece is arranged in the mounting hole; One end of the second insertion portion is arranged on one of the fixed plate portions, and the end of the second insertion portion protrudes from the inner wall of the fixed plate.

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