A voice gateway with telephone line detection function

Abstract

The present application relates to a voice gateway with a telephone line detection function, which includes a gateway body and a transmission medium. A connection hole for inserting the transmission medium is opened at the end of the gateway body, and the gateway body also includes a support frame. A lower displacement block is provided at the bottom of the support frame, and an upper displacement block is provided on the side of the gateway body close to the connection hole. A through hole is formed between the two for the transmission medium to pass through; both ends of the lower displacement block are provided with positioning pieces that can be inserted into the support frame. When the upper displacement block is tightly attached to the lower displacement block, the positioning piece is in an unlocking position, the lower displacement block is separated from the support frame and the upper displacement block is separated from the gateway body; when there is a gap between the upper displacement block and the lower displacement block, the positioning piece is in a locking position, the lower displacement block is relatively fixedly connected to the support frame, and the upper displacement block is slidably connected to the gateway body. The present application has the effect of facilitating the connection of multiple transmission media to the voice gateway, and being able to quickly sort out the multiple transmission media so that the corresponding transmission media can be inserted into the corresponding instruments and equipment.

Description

Technical Field

[0001] The present application relates to the field of voice gateways, and in particular to a voice gateway with a telephone line detection function. Background Art

[0002] Currently, the functions of a voice gateway are similar to those of a computer switch. They typically combine the functions of a router and a switch, exporting network resources to multiple computers while also connecting telephones. They connect the Public Switched Telephone Network (PSTN) to the IP network, enabling voice calls over the network. No dedicated telephone is required; regular telephones and fax machines can be connected to the gateway.

[0003] Regarding the above-mentioned related technologies, there are still defects: when the transmission medium (wire) is inserted into the voice gateway, the staff will frequently plug and unplug the transmission medium due to adjustment of the transmission medium, and the staff often fail to sort out the transmission medium due to negligence, resulting in many wires mixed together. When the staff inserts the corresponding transmission medium into the corresponding instrument and equipment, it will be difficult to find the corresponding transmission medium. At this time, the wires are often pulled directly and roughly, resulting in many wires being knotted or entangled with each other, which aggravates the degree of wire mixing and increases the difficulty of sorting out the subsequent transmission medium. Therefore, there is still room for improvement. Summary of the Invention

[0004] In order to facilitate the staff to quickly sort out multiple transmission media after connecting them to the voice gateway and insert the corresponding transmission media into the corresponding instruments and equipment, the present application provides a voice gateway with a telephone line detection function.

[0005] This application provides a voice gateway with telephone line detection function, which adopts the following technical solutions:

[0006] A voice gateway with a telephone line detection function includes a gateway body and a transmission medium, an insertion hole for inserting the transmission medium is opened at the end of the gateway body, and also includes a support frame, the bottom of the support frame is detachably connected to a lower displacement block, the gateway body is mounted on the lower displacement block, and the side of the gateway body close to the insertion hole is detachably connected to an upper displacement block, and a through hole for the transmission medium to pass through is formed between the upper displacement block and the lower displacement block; both ends of the lower displacement block are slidably connected to positioning pieces that can be inserted into the support frame, and the positioning pieces have a locking position and an unlocking position, when the upper displacement block is tightly attached to the lower displacement block, the positioning piece is in the unlocking position, the lower displacement block is separated from the support frame and the upper displacement block is separated from the gateway body, when there is a gap between the upper displacement block and the lower displacement block, the positioning piece is in the locking position, the lower displacement block is relatively fixedly connected to the support frame, and the upper displacement block is slidably connected to the gateway body.

[0007] By adopting the above technical solution, when the positioning part is in the unlocking position, the upper displacement block and the lower displacement block can be slid. As the upper displacement block and the lower displacement block slide, the mixed transmission media are separated so that the corresponding transmission media can be inserted into the corresponding instrument equipment.

[0008] Optionally, connecting cavities for sliding of the positioning piece are provided at both ends of the lower displacement block, a connecting block capable of being inserted into the connecting cavity is fixedly connected to the side of the upper displacement block facing the lower displacement block, and a connecting hole for inserting the connecting block is provided on the positioning piece; a sliding block is fixedly connected to the side of the upper displacement block facing the gateway body, and a sliding hole for sliding the sliding block is provided on the gateway body. When the connecting block is inserted into the connecting hole, the positioning piece is in an unlocking position, and the sliding block can be moved out of the sliding hole. When there is a gap between the connecting block and the positioning block, the positioning piece is in a locking position.

[0009] By adopting the above technical solution, when the positioning member is in the locking position, the lower displacement block contacts the gateway body, thereby supporting the gateway body. When the positioning member is in the unlocking position, the upper displacement block is moved out of the sliding hole and combined with the lower displacement block to sort out the transmission medium.

[0010] Optionally, a plurality of suction cups are fixedly connected to the other side of the support frame, the suction cup layers are arranged linearly in an array, a placement cavity for the suction cups is opened on the support frame, and the height of the suction cups is greater than the opening depth of the placement cavity.

[0011] By adopting the above technical solution, when the suction cup is adsorbed on the wall, the gateway body can be installed on the wall; when the suction cup is adsorbed on the ground, the stability of the suction cup on the ground can be enhanced.

[0012] Optionally, the support frame is provided with a protection block slidably connected to one side of the suction cup, and the protection block includes a vertical portion and an inclined portion, and the inclined portion is located on the side close to the lower displacement block. The support frame is also rotatably connected to a plurality of turntables, and there are gaps between adjacent turntables. An adjustment block is also slidably connected between the protection block and the turntable, and the adjustment block is threadedly connected to the turntable. The adjustment block has a storage position and a release position. When the gateway body is mounted on the lower displacement block, the adjustment block is in the storage position and contacts the vertical portion, and the end of the protection block is flush with the side of the support frame; when the gateway body is separated from the lower displacement block, the adjustment block is in the release position and contacts the inclined portion, and the end of the protection block is higher than the suction cup.

[0013] By adopting the above technical solution, the protection block will contact the wall before the suction cup, preventing the suction cup from being randomly adsorbed on debris when the support frame and the gateway body are placed.

[0014] Optionally, a return spring is fixedly connected to the vertical part, one end of the return spring is fixedly connected to the vertical part, and the other end of the return spring is fixedly connected to the support frame. When the adjustment block is in the storage position, the return spring is in a natural state, and when the adjustment block is in the release position, the return spring is in a stretched state.

[0015] By adopting the above technical solution, the reset spring can apply a reset force to the stretched end of the protective block. When the adjustment block is placed in the storage position, it can drive the protective block to be completely retracted into the support frame.

[0016] Optionally, the adjustment block always maintains contact with multiple turntables simultaneously.

[0017] By adopting the above technical solution, multiple turntables are in contact with the adjustment block at the same time, so as to ensure that the turntable can drive the adjustment block to rotate when rotating, so that the adjustment block does not rotate idly.

[0018] Optionally, the end of the support frame away from the lower moving block is also slidably connected to a telescopic rod, and the end of the telescopic rod is horizontally slid with a fixed cover. When the adjustment block is in the release position, the end of the telescopic rod away from the fixed cover abuts against the end of the vertical part, and the gateway body is tightly attached to the opposite sides of the fixed cover.

[0019] By adopting the above technical solution, the gateway body is placed in the fixed cover, thereby limiting the gateway body and preventing the gateway body from moving left and right or up and down on the support frame, thereby ensuring the stability of the gateway body on the support frame.

[0020] Optionally, when the adjustment block is in the storage position, the side wall of the support frame away from the end of the lower displacement block is in close contact with the two opposite sides of the fixed cover, and the vertical portion is in close contact with the rod body of the telescopic rod.

[0021] By adopting the above technical solution, when the adjustment block is in the storage position, the telescopic rod is inserted into the support frame and abuts against the vertical part, thereby keeping the distance between the protection block and the end face of the support frame always greater than or less than the distance between the end face of the support frame, and relatively stabilizing the position of the protection block.

[0022] Optionally, a sliding magnetic component is fixedly connected to the inner hole wall of the sliding hole away from the lower displacement block, and the sliding magnetic component can be magnetically connected to the sliding block.

[0023] By adopting the above technical solution, when the sliding magnetic part contacts the sliding block, the upper displacement block is not likely to move.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The combination of the upper displacement block and the lower displacement block can sort out the disordered transmission media, separate the multiple transmission media inserted into the gateway body, and enable the corresponding transmission media to be quickly inserted into the corresponding instrument equipment;

[0026] 2. When the gateway needs to be placed on the wall, the support frame can be adsorbed on the wall using the suction cup, and then the gateway body can be fixed on the support frame using the fixing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure in which the gateway body is installed on the ground in an embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of the structure in which the gateway body is installed on the wall in an embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram highlighting the upper insertion hole in an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram highlighting the structure inside the connecting cavity in the embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram highlighting the sliding hole in the embodiment of the present application.

[0032] Figure 6 This is a schematic diagram of the structure inside the support frame when the adjustment block is in the storage position in the embodiment of the present application.

[0033] Figure 7 This is a schematic diagram of the structure inside the support frame when the adjustment block is released from the working position in the embodiment of the present application.

[0034] Figure numerals: 1. Gateway body; 2. Transmission medium; 3. Insertion hole; 4. Support frame; 5. Lower displacement block; 6. Upper displacement block; 7. Positioning piece; 8. Connecting cavity; 9. Positioning block; 10. Positioning spring; 11. Connecting block; 12. Connecting hole; 13. Sliding block; 14. Sliding hole; 15. Suction cup; 16. Protective block; 17. Vertical part; 18. Inclined part; 19. Turntable; 20. Adjustment block; 21. Reset spring; 22. Telescopic rod; 23. Fixed cover; 24. Perforation; 25. Sliding magnetic piece; 26. Placement cavity. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The embodiment of the present application discloses a voice gateway with a telephone line detection function. Figure 1 、 Figure 2 A voice gateway with telephone line detection function includes a gateway body 1 and a transmission medium 2. The transmission medium 2 is inserted into an insertion hole 3 (refer to Figure 3 ) for signal transmission.

[0037] Reference Figure 1 、 Figure 2 A voice gateway with a telephone line detection function also includes a support frame 4 for mounting the gateway body 1. The support frame 4 allows the gateway body 1 to be relatively fixed to a wall or relatively stably placed on the ground. The support frame 4 is composed of a long pole and a short pole perpendicularly arranged at the end of the long pole. The side of the support frame 4 is "L"-shaped. A detachable lower displacement block 5 is also provided within the short pole, and the gateway body 1 is mounted on the short pole. Placement cavities 26 are uniformly arranged in an array on the rod body of the long pole, and suction cups 15 are fixedly connected to the placement cavities 26. The overall height of the suction cups 15 is greater than the opening depth of the placement cavities 26. The suction cups 15 can be used to relatively fix the support frame 4 to the wall.

[0038] Reference Figure 3 、 Figure 4 , both ends of the lower displacement block 5 in contact with the support frame 4 are provided with connecting cavities 8, and a positioning member 7 is slidably connected in the connecting cavity 8. The positioning member 7 includes a positioning block 9 with a rectangular cross-section and a positioning spring 10. One end of the positioning spring 10 is fixedly connected to the inner bottom of the connecting cavity 8, and the other end of the positioning spring 10 is fixedly connected to the positioning block 9. Under the action of the positioning spring 10, the positioning block 9 is pushed so that the positioning block 9 passes through the connecting cavity 8 and is inserted into the cavity opening on the side of the support frame 4 into the support frame 4, thereby realizing a relatively fixed connection between the lower displacement block 5 and the support frame 4.

[0039] Reference Figure 4 、 Figure 5The upper displacement block 6 is detachably connected to one end of the gateway body 1 with the insertion hole 3. The upper displacement block 6 is fixedly connected to the side facing the lower displacement block 5 with a connecting block 11. The connecting cavity 8 also has an opening facing the connecting block 11. The connecting block 11 can be inserted into the lower displacement block 5 through the opening of the connecting cavity 8 and contact the positioning member 7. A sliding block 13 is also fixedly connected to the side of the upper displacement block 6 facing the gateway body 1. The gateway body 1 has a sliding hole 14 for the sliding block 13 to slide. The sliding block 13 slides vertically in the sliding hole 14. A sliding magnetic part 25 that can be magnetically connected to the sliding block 13 is also installed on the inner hole wall of the sliding hole 14 away from the lower displacement block 5.

[0040] The positioning block 9 is also provided with a connection hole 12 for inserting the connection block 11, and the opening of the connection hole 12 faces the connection block 11. Depending on whether the connection block 11 is inserted into the connection hole 12, the positioning member 7 has a locking position and an unlocking position. When the connecting block 11 is not inserted into the connecting hole 12 and there is a gap between the lower displacement block 5 and the positioning member 7, the positioning member 7 is in the locked position, one end of the positioning block 9 is inserted into the support frame 4, thereby ensuring the relative fixed connection between the lower displacement block 5 and the support frame 4, and the sliding block 13 is also magnetically connected to the sliding magnetic member 25, thereby achieving a relatively fixed connection with the upper displacement block 6. When the connecting block 11 is inserted into the lower displacement block 5 and enters the connecting hole 12, the contact between the connecting block 11 and the positioning block 9 drives the positioning block 9 to retract in the direction of the positioning spring 10 until the positioning block 9 is released from the support frame 4. At this time, the positioning member 7 is in the unlocked position, the positioning spring 10 is also in a compressed state, the lower displacement block 5 and the upper displacement block 6 are tightly attached, and a through hole 24 is formed between them to allow the head of the transmission medium 2 to pass through. When the positioning member 7 is in the unlocked position, the sliding block 13 also slides to the opening of the sliding hole 14 and can be removed from the opening of the sliding hole 14.

[0041] When the staff needs to sort out the multiple transmission media 2 inserted into the insertion hole 3, the positioning member 7 can be moved to the unlocking position, and the upper displacement block 6 and the lower displacement block 5 can be removed from the gateway body 1 and the support frame 4 at the same time. Since the wires of the transmission medium 2 are confined in the through-hole 24, the staff can sort out the multiple mixed wires along the line of the transmission medium 2, quickly sort out the transmission medium 2, and insert the corresponding transmission medium 2 into the corresponding instrument and equipment.

[0042] Reference Figure 6 、 Figure 7On one side of the support frame 4 where the suction cup 15 is provided, a plurality of protection blocks 16 are slidably connected. The protection blocks 16 are spaced apart from the suction cup 15. The protection blocks 16 are composed of a vertical portion 17 and an inclined portion 18 integrally formed with the vertical portion 17. The inclined portion 18 is located on the side close to the short rod. A plurality of turntables 19 are rotatably connected to the support frame 4. There are gaps between the multiple turntables 19. The distance between each point on the vertical portion 17 and the turntable 19 always remains the same, and the farther the inclined portion 18 is from the vertical portion 17, the smaller the distance from the turntable 19 is. When the gateway body 1 contacts the long pole and falls onto the short pole, the gateway body 1 will contact the turntable 19 and drive the turntable 19 to rotate. An adjustment block 20 is also provided between the turntable 19 and the protective block 16. The adjustment block 20 is tightly attached to the protective block 16 toward one side of the turntable 19. One side of the adjustment block 20 is threadedly connected to the turntable 19, and the adjustment block 20 always maintains contact with multiple turntables 19 at the same time. During the rotation of the turntable 19, the turntable 19 will drive the adjustment block 20 to slide up and down.

[0043] Reference Figure 6 、 Figure 7 According to the position of the adjusting block 20, the adjusting block 20 has a storage position and a release position. When the adjusting block 20 is in the storage position, the end face of the protective block 16 is flush with the surface of the support frame 4. When the adjusting block 20 is in the release position, the height of the protective block 16 toward the surface of the support block is greater than the height of the suction cup 15 beyond the surface of the support frame 4.

[0044] When the adjustment block 20 is located at the storage position, the gateway body 1 is mounted on the short rod, and as the gateway body 1 contacts the long rod and slides, the turntable 19 is driven to rotate. At this time, the turntable 19 drives the adjustment block 20 to slide, and the adjustment block 20 as a whole is completely in contact with the direction of the vertical portion 17. The protection block 16 is retracted into the support frame 4, and the end face of the protection block 16 is flush with the surface of the support frame 4. The suction cup 15 will contact the wall before the protection block 16.

[0045] When the adjustment block 20 is moved from the storage position to the release position, the gateway body 1 first separates from the short rod and gradually increases the distance between them. During the movement of the gateway body 1, the gateway body 1 drives the turntable 19 to rotate, and the turntable 19 drives the adjustment block 20 toward the short rod. At this time, the adjustment block 20 contacts the inclined portion 18 and pushes the inclined portion 18 away from the turntable 19, pushing the protective block 16 out of the support frame 4. When the adjustment block 20 is in the release position, it means that the protective block 16 has been completely pushed out of the support frame 4. The height of the protective block 16 toward the support block surface is greater than the height of the suction cup 15 above the support frame 4 surface. The support of the protective block 16 provides a certain amount of auxiliary force to pull up the suction cup 15. At the same time, the protective block 16 will contact the wall before the suction cup 15, preventing the suction cup 15 from being randomly attached to debris when the support frame 4 and the gateway body 1 are placed.

[0046] Reference Figure 6 A return spring 21 is also fixedly connected to the end of the vertical portion 17. One end of the return spring 21 is fixedly connected to the vertical portion 17, and the other end of the return spring 21 is fixedly connected to the support frame 4. When the protective block 16 is squeezed out of the support frame 4, the return spring 21 is stretched and applies a return force to the end of the protective block 16.

[0047] Reference Figure 6 、 Figure 7 A telescopic rod 22 is also slidably connected to the end of the long rod. The number of the telescopic rods 22 is the same as the number of the protective blocks 16, and the telescopic rods 22 and the corresponding protective blocks 16 are located on the same straight line. A fixed cover 23 is also provided at the end of the telescopic rod 22. The fixed cover 23 is slidably connected to the telescopic rod 22, and the fixed cover 23 is "U" shaped.

[0048] When the adjustment block 20 is in the storage position, the gateway body 1 is precisely located within the support frame 4. The telescopic rod 22 is then pulled out of the support frame 4, and the end of the telescopic rod 22 away from the fixed cover 23 abuts against the end of the vertical portion 17, with the protective block 16 supporting the telescopic rod 22. The staff then pushes the fixed cover 23 toward the gateway body 1, sandwiching the gateway body 1 within the fixed cover 23. The gateway body 1 and the fixed cover 23 are now tightly attached on opposite sides. The fixed cover 23 prevents the gateway body 1 from shaking left or right or up and down while mounted on the support frame 4, ensuring its stability.

[0049] When the adjustment block 20 is located at the release position, it means that the gateway body 1 is separated from the support frame 4. At this time, the fixed cover 23 does not need to limit the gateway body 1. The staff pushes the telescopic rod 22 in the direction of the short rod to retract the telescopic rod 22 into the support frame 4. The telescopic rod 22 entering the support frame 4 will have its rod body tightly attached to the vertical portion 17. The telescopic rod 22 limits the protection block 16, stabilizes the height of the protection block 16 exceeding the end face of the support frame 4, and at the same time reinforces the stability of the adjustment block 20 in the release position.

[0050] The embodiment of the present application discloses a voice gateway with a telephone line detection function, the implementation principle of which is: after the gateway body 1 is placed on the support frame 4, the gateway body 1 can be relatively stably placed on the ground or on the wall through the suction cup 15, and then the upper displacement block 6 and the lower displacement block 5 are tightly attached, and the wires of the transmission medium inserted into the insertion hole 3 are combed through the action of the upper displacement block 6 and the lower displacement block 5.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A voice gateway with a telephone line detection function, comprising a gateway body (1) and a transmission medium (2), wherein an insertion hole (3) for inserting the transmission medium (2) is provided at an end of the gateway body (1), and characterized in that: The gateway body (1) is mounted on the lower displacement block (5), and the gateway body (1) is detachably connected to an upper displacement block (6) on a side of the gateway body (1) close to the insertion hole (3). A through hole (24) for the transmission medium (2) to pass through is formed between the upper displacement block (6) and the lower displacement block (5); both ends of the lower displacement block (5) are slidably connected to positioning members (7) that can be inserted into the support frame (4), and the positioning members (7) having a locking position and an unlocking position; when the upper displacement block (6) and the lower displacement block (5) are in close contact, the positioning member (7) is in the unlocking position, the lower displacement block (5) is separated from the support frame (4), and the upper displacement block (6) is separated from the gateway body (1); when a gap exists between the upper displacement block (6) and the lower displacement block (5), the positioning member (7) is in the locking position, the lower displacement block (5) is relatively fixedly connected to the support frame (4), and the upper displacement block (6) is slidably connected to the gateway body (1); The two ends of the lower displacement block (5) are provided with connecting cavities (8) for the positioning member (7) to slide; the upper displacement block (6) is fixedly connected to a connecting block (11) capable of being inserted into the connecting cavity (8) on one side facing the lower displacement block (5); the positioning member (7) is provided with a connecting hole (12) for the connecting block (11) to be inserted; the upper displacement block (6) is fixedly connected to a sliding block (13) on one side facing the gateway body (1); the gateway body (1) is provided with a sliding hole (14) for the sliding block (13) to slide; when the connecting block (11) is inserted into the connecting hole (12), the positioning member (7) is in an unlocking position, and the sliding block (13) can be moved out of the sliding hole (14); when there is a gap between the connecting block (11) and the positioning block (9), the positioning member (7) is in a locking position.

2. The voice gateway with telephone line detection function according to claim 1, characterized in that: A plurality of suction cups (15) are fixedly connected to the other side of the support frame (4), and the suction cups (15) are arranged in a linear array. A placement cavity (26) for placing the suction cups (15) is opened on the support frame (4), and the height of the suction cups (15) is greater than the opening depth of the placement cavity (26).

3. The voice gateway with telephone line detection function according to claim 2, characterized in that: The support frame (4) is provided with a protection block (16) on one side of the suction cup (15) in sliding connection, and the protection block (16) includes a vertical portion (17) and an inclined portion (18), and the inclined portion (18) is located on a side close to the lower displacement block (5). The support frame (4) is also rotatably connected to a plurality of turntables (19), and there is a gap between adjacent turntables (19). An adjustment block (20) is also slidably connected between the protection block (16) and the turntable (19), and the adjustment block (20) is connected to the turntable (19). The adjusting block (20) is threadedly connected, and has a storage position and a release position. When the gateway body (1) is mounted on the lower displacement block (5), the adjusting block (20) is in the storage position and contacts the vertical portion (17), and the end of the protection block (16) is flush with the side of the support frame (4); when the gateway body (1) is separated from the lower displacement block (5), the adjusting block (20) is in the release position and contacts the inclined portion (18), and the end of the protection block (16) is higher than the suction cup (15).

4. The voice gateway with telephone line detection function according to claim 3, characterized in that: A return spring (21) is also fixedly connected to the vertical portion (17), one end of the return spring (21) is fixedly connected to the vertical portion (17), and the other end of the return spring (21) is fixedly connected to the support frame (4). When the adjustment block (20) is in the storage position, the return spring (21) is in a natural state, and when the adjustment block (20) is in the release position, the return spring (21) is in a stretched state.

5. The voice gateway with telephone line detection function according to claim 3, characterized in that: The regulating block (20) always keeps in contact with the plurality of rotating disks (19) at the same time.

6. The voice gateway with telephone line detection function according to claim 3, characterized in that: The end of the support frame (4) away from the lower moving block is also slidably connected to a telescopic rod (22), and the end of the telescopic rod (22) is horizontally slid with a fixed cover (23). When the adjustment block (20) is in the release position, the end of the telescopic rod (22) away from the fixed cover (23) abuts against the end of the vertical part (17), and the gateway body (1) is in close contact with the opposite sides of the fixed cover (23).

7. The voice gateway with telephone line detection function according to claim 6, characterized in that: When the adjustment block (20) is in the storage position, the side wall of the support frame (4) away from the end of the lower displacement block (5) is in close contact with the two opposite sides of the fixed cover (23), and the vertical portion (17) is in close contact with the rod body of the telescopic rod (22).

8. The voice gateway with telephone line detection function according to claim 1, characterized in that: A sliding magnetic part (25) is fixedly connected to the inner hole wall of the sliding hole (14) away from the lower displacement block (5), and the sliding magnetic part (25) can be magnetically connected to the sliding block (13).

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