A building block type intelligent curtain power collector traction vehicle and a power collector thereof

Abstract

The utility model relates to electric window curtain technical field especially relates to a building block formula intelligent window curtain current collector tractor and current collector thereof, including traction frame, current collection frame, first locking mechanism and second locking mechanism, and traction frame includes main frame, traction gear and traction gyro wheel, and current collection frame includes the sub -frame and the electric roller of the elasticity setting on the main frame, and first locking mechanism includes the slot and the elastic lock hook formed on the main frame, the utility model discloses utilize first locking mechanism to lock the traction frame and current collection frame and form the tractor, and utilize the sub -frame of elasticity setting to make the electric roller on it and the electric track always keep contact, not only can eliminate the vibration of tractor in the moving process to cause the electric roller and the electric track contact bad phenomenon, also can eliminate the electric track butt joint gap or the electric track uneven height causes the electric roller contact bad, thereby improved the stability and reliability of electric window curtain operation.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and in particular to a modular intelligent curtain current collector traction vehicle and its current collector. Background Technology

[0002] Electric curtains typically power a conductive rail via a power module, which in turn powers a traction vehicle that rotates with it. The traction vehicle transmits electrical energy to a driver, which then moves back and forth, causing the curtains to open or close. To reduce transportation costs and meet the needs of large-scale production, existing technologies often employ segmented conductive rail structures, where multiple sections of the conductive rail are assembled together at the installation site.

[0003] However, due to factors such as processing errors, assembly precision limitations, and material deformation, there are often unevenness or misalignment issues at the joints of adjacent conductive rail sections. When the traction vehicle slides on the conductive rail to this joint, poor contact may occur, affecting the stability and reliability of the motorized curtains' operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem that there is often unevenness or misalignment at the joint of two adjacent conductive rails in the existing electric curtain, when the traction vehicle slides on the conductive rail to the joint, poor contact may occur, which affects the stability and reliability of the electric curtain operation. The present invention provides a modular intelligent curtain current collector traction vehicle and its current collector.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a modular intelligent curtain current-collecting traction vehicle, which is in conductive contact with both the curtain track and the driver, and moves back and forth along the length of the curtain track under the action of the driver to drive the curtain to open or close. The traction vehicle includes: The traction frame includes a main frame, a traction gear mounted on the main frame, and traction rollers for rolling engagement with the travel rail of the curtain track. The traction gear is located between the rack of the curtain track and the drive gear of the driver and is connected to both in a transmission manner. The current collector includes a sub-frame that is elastically mounted on the main frame and conductive rollers mounted on the sub-frame for rolling engagement with the conductive rail of the curtain track. The first locking mechanism includes a slot formed on the main frame for insertion of the sub-frame and a resilient locking hook for the sub-frame to pass over and confine within the slot; and a second locking mechanism, including a positioning slot on the main frame for insertion of a positioning arm on the driver and a locking slot for engagement of a locking arm on the driver.

[0006] Furthermore, the main frame has a recessed gear groove for mounting the traction gear, and the gear groove is provided with an elastic latch for locking the traction gear in the gear groove.

[0007] Furthermore, the main frame protrudes towards the sub-frame to form a pin, and an elastic element is sleeved on the pin. The sub-frame extends to form a limiting plate for the pin to be inserted. One end of the elastic element abuts against the main frame, and the other end abuts against the limiting plate.

[0008] Furthermore, the sub-frame extends to form a contact plate, and the main frame has a positioning guide hole through which the elastic contact on the driver passes to make conductive contact with the contact plate.

[0009] Furthermore, the groove wall of the gear slot is recessed to form a shaft hole for accommodating the gear shaft. The elastic latch is located in the shaft hole and can be deformed under the pressure of the gear shaft to allow it to enter the shaft hole and reset after the gear shaft passes through, thereby locking the traction gear in the gear slot.

[0010] Furthermore, the subframe has insertion ends for inserting into slots at both ends along its length. The resilient locking hook includes a rod and a hook body. The rod forms a slot wall on one side of the slot to laterally limit the insertion end, and the hook body is located at the slot opening to longitudinally limit the insertion end that enters the slot from the slot opening. Each sub-frame has two conductive rollers, which are symmetrically distributed along the elastic element, and a gap is left between the pin and the inner wall of the limiting plate.

[0011] Furthermore, the conductive roller has a recessed center forming a conductive cavity that matches the shape of the conductive rail so that it can be inserted.

[0012] A current collector includes a conductive rail, a main power supply box for supplying power to the conductive rail, a current collector traction vehicle that is in conductive contact with the conductive rail and is as described above, and a driver that is in conductive contact with the current collector traction vehicle and is used to drive the current collector traction vehicle to reciprocate along the length of the conductive rail.

[0013] Furthermore, the conductive rail has a segmented structure, comprising several conductive rails connected in sequence. Each conductive rail has a stationary contact at one end along its length and a moving contact at the other end that makes conductive contact with the stationary contact. The moving contact is elastically configured.

[0014] Furthermore, a host contact spring is installed on the host power supply box, and an elastic contact spring for conductive contact with the host contact spring is installed at one end of the conductive rail.

[0015] The beneficial effects of this utility model are as follows: This utility model uses a first locking mechanism to lock the traction frame and the current collector frame to form a traction vehicle, and uses a flexible sub-frame to keep the conductive rollers on it in contact with the conductive rail at all times. This not only eliminates the phenomenon of poor contact between the conductive rollers and the conductive rail caused by vibration during the movement of the traction vehicle, but also eliminates the problem of poor contact between the conductive rollers caused by gaps in the conductive rail or unevenness of the conductive rail. This improves the stability and reliability of the operation of the electric curtain. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a first-person view structural diagram of the current collector traction vehicle in this utility model; Figure 2 This is a structural schematic diagram of the current collector traction vehicle from a second perspective in this utility model; Figure 3 This is a structural schematic diagram of the current collector traction vehicle from a third-person perspective in this utility model; Figure 4 This is a three-dimensional schematic diagram of the assembly of the current collector traction vehicle and the conductive rail in this utility model; Figure 5 This is a three-dimensional schematic diagram of the assembly of the current collector traction vehicle and the curtain track in this utility model; Figure 6 This is a side view of the assembly of the current collector traction vehicle and the curtain track in this utility model; Figure 7 This is a three-dimensional schematic diagram of the current collector frame in this utility model; Figure 8 This is a split view of the traction frame in this utility model; Figure 9 This is a split view of the traction frame and the driver in this utility model; Figure 10 This is an assembly diagram of the traction frame and the driver in this utility model; Figure 11 This is a schematic diagram of the structure of the central collector in this utility model; Figure 12 This is a breakdown diagram of the central collector in this utility model; Figure 13 This is a breakdown diagram of the smart curtains; Figure 14 This is an assembly diagram of a smart curtain; Figure 15 This is a schematic diagram of the conductive rail structure; Figure 16 This is a schematic diagram showing the coordination between the two conductive rails and the tractor when they are aligned. Figure 17 This is a schematic diagram showing the interaction between the two conductive rails and the tractor when they are not aligned. Figure 18 This is a schematic diagram showing the assembly of the current collector, conductive rail, and flexible contact. In the picture: 1. Traction frame; 101. Main frame; 102. Traction gear; 103. Traction roller; 104. Slot; 105. Elastic locking hook; 1051. Rod body; 1052. Hook body; 106. Positioning slot; 107. Locking slot; 108. Gear slot; 109. Elastic lock buckle; 110. Positioning guide hole; 111. Shaft hole; 112. Pin; 113. Positioning cavity; 114. Reinforcing rib; 115. Elastic element; 116. Gear shaft; 2. Current collector frame; 201. Sub-frame; 202. Conductive roller; 2021. Conductive cavity; 203. Contact plate; 204. Limiting plate; 205. Conductive wheel axle; 3. Curtain track; 301. Rack and pinion; 302. Conductive track; 302a. Conductive guide track; 303. Running track; 304. Elastic contact spring; 305. Stationary contact; 306. Moving contact; 4. Driver; 401. Drive gear; 402. Positioning arm; 403. Locking arm; 404. Spring contact; 5. Main unit power supply box, 501. Main unit contact spring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components, orientations, and references (e.g., up, down, left, right, etc.) relevant to the present invention and are intended only to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0019] like Figures 1-10 As shown, a modular intelligent curtain current collector traction vehicle is electrically connected to both the curtain track 3 and the driver 4, and reciprocates along the length of the curtain track 3 under the action of the driver 4 to open or close the curtain. The traction vehicle includes: The traction frame 1 includes a main frame 101, a traction gear 102 mounted on the main frame 101, and traction rollers 103 for rolling engagement with the travel rail 303 of the curtain track 3. The traction gear 102 is located between the rack 301 of the curtain track 3 and the drive gear 401 of the driver 4 and is connected to both for transmission. The traction rollers 103 have at least two sets. Two traction rollers 103 in each set are mounted on the traction frame 1 through a traction wheel shaft. The traction frame 1 is provided with reinforcing ribs 114 to increase the overall structural strength, and the traction frame 1 is made of insulating material. The current collector 2 includes a sub-frame 201 elastically mounted on the main frame 101 and conductive rollers 202 mounted on the sub-frame 201 for rolling engagement with the conductive rail 302 of the curtain track 3. The conductive rollers 202 are mounted on the current collector 2 via conductive axles 205. The current collector 2, conductive rollers 202, and conductive axles 205 are all made of conductive materials with good conductivity. The conductive rail 302 supplies power to the driver 4 through the current collector 2. The drive gear 401 rotates, driving the traction gear 102 to rotate. The traction gear 102 engages with the rack 301 to drive the traction vehicle to reciprocate along the length of the curtain track 3. The flexible subframe 201 ensures that the conductive rollers 202 on it are in close contact with the conductive rails 302 at all times, eliminating the poor contact between the conductive rails 302 and the conductive rollers 202 caused by vibrations during the movement of the tractor, and eliminating poor contact of the conductive rollers 202 caused by gaps in the conductive rails 302 or unevenness in the conductive rails 302.

[0020] The first locking mechanism includes a slot 104 formed on the main frame 101 for the insertion of the sub-frame 201 and an elastic hook 105 for the sub-frame 201 to pass through and to be confined within the slot 104. The elastic hook 105 is elastic and can be compressed during the installation of the current collector rack 2 to allow the current collector rack 2 to pass through and elastically reset after the current collector rack 2 has passed through to lock the current collector rack 2. The second locking mechanism includes a positioning groove 106 on the towing frame 1 into which the positioning arm 402 on the driver 4 is inserted, and a locking groove 107 into which the locking arm 403 on the driver 4 is engaged. The positioning arm 402 has a guide slope. There are at least two positioning grooves 106 and at least two locking grooves 107. The at least two positioning grooves 106 and at least two locking grooves 107 are distributed on both sides of the current collector frame 2. First, the positioning arm 402 is aligned with the positioning groove 106 and pushed in to fix it, which can play a role in positioning and stabilizing. At the same time, the locking arm 403 on the driver 4 automatically falls into the locking groove 107 on the towing frame 1. Under the pressure of the spring, the driver 4 is firmly locked and does not detach from the towing vehicle.

[0021] In this embodiment, a first locking mechanism is used to lock the traction frame 1 and the current collector frame 2 to form a traction vehicle, and a second locking mechanism is used to lock the traction vehicle and the driver 4 to form a current collector. At the same time, the elastically set sub-frame 201 ensures that the conductive rollers 202 on it are always in contact with the conductive rails 302. This not only eliminates the phenomenon of poor contact between the conductive rollers 202 and the conductive rails 302 caused by vibration during the movement of the traction vehicle, but also eliminates the problem of poor contact between the conductive rollers 202 caused by gaps in the conductive rails 302 or unevenness of the conductive rails 302. This improves the stability and reliability of the operation of the electric curtain.

[0022] In some examples, the main frame 101 has a recessed gear groove 108 for mounting the traction gear 102. The traction gear 102 can rotate within the gear groove 108, and both sides of the traction gear 102 partially extend out of the gear groove 108 to mesh with the rack 301 and the drive gear 401 respectively. The gear groove 108 is provided with an elastic latch 109 for locking the traction gear 102 within the gear groove 108. The elastic latch 109 can limit the traction gear 102 within the gear groove 108 without affecting the rotation of the traction gear 102.

[0023] In some examples, the main frame 101 protrudes towards the sub-frame 201 to form a pin 112, on which an elastic element 115 is sleeved, and the sub-frame 201 extends to form a limiting plate 204 for the pin 112 to be inserted. One end of the elastic element 115 abuts against the main frame 101, and the other end abuts against the limiting plate 204. The elastic element 115 can be a compression spring, which supports the entire sub-frame 201 and allows the sub-frame 201 to float under the action of the compression spring. This ensures that the conductive roller 202 and the conductive rail 302 are always in close contact. The insertion and engagement of the pin 112 and the limiting plate 204 maintains an upward thrust on the current collector 2, keeping the conductive roller 202 in close contact with the conductive rail 302, thus ensuring good conductivity of the tractor during movement.

[0024] In some examples, the sub-frame 201 extends to form a contact plate 203, and the main frame 101 has a positioning guide hole 110 for the elastic contact 404 on the driver 4 to enter and make conductive contact with the contact plate 203. The positioning guide hole 110 corresponds one-to-one with the elastic contact 404. The positioning guide hole 110 can position the elastic contact 404 passing through it to avoid the elastic contact 404 being skewed and making poor contact with the contact plate 203. The elastic contact 404 is a good conductor, and the contact plate 203 can transmit current to the driver 4 through the elastic contact 404.

[0025] In some examples, the groove wall of the gear groove 108 is recessed to form a shaft hole 111 for receiving the gear shaft 116. The elastic latch 109 is located in the shaft hole 111 and can be deformed under the pressure of the gear shaft 116 to allow it to enter the shaft hole 111 and reset after the gear shaft 116 has passed through to lock the traction gear 102 in the gear groove 108. There are two shaft holes 111 and they are symmetrically arranged. The elastic latch 109 has a guide slope to guide the gear shaft 116 into the shaft hole 111.

[0026] In some examples, the current collectors 2 are arranged in pairs and symmetrically distributed along the axial direction of the traction gear 102. Each current collector 2 has a sub-frame 201 with plug-in ends for inserting into the slot 104 at both ends along its length direction. The slot 104 is formed by a recess on the outside of the main frame 101. The elastic locking hook 105 is correspondingly disposed on the outside of the slot 104. The elastic buckle 109 has a certain elasticity and can deform under the pressure of the insertion end to allow the insertion end to pass through and enter the slot 104 and reset to limit the insertion end within the slot 104. The elastic locking hook 105 includes a rod 1051 and a hook 1052. The rod 1051 forms one side of the slot wall (outer slot wall) of the slot 104, and the main frame 101 forms the other side of the slot wall (inner slot wall) of the slot 104 to limit the insertion end laterally. The hook 1052 is located at the slot opening of the slot 104 to limit the insertion end entering the slot 104 from the slot opening longitudinally. The rod 1051 and the hook 1052 cooperate to limit the sub-frame 201 within the main frame 101 but leave space for the sub-frame 201 to float up and down.

[0027] In some examples, each subframe 201 has two conductive rollers 202 to achieve a dual-wheel structure rolling contact power supply, replacing the conventional sliding friction structure. This avoids the noise, wear, easy damage, limited lifespan, jumping, poor contact, and other problems caused by conventional sliding friction. It also increases the contact area between the rollers and the conductive rails 302 to provide a stable and reliable current flow. The elastic element 115 is located between the two conductive rollers 202, and the two conductive rollers 202 are symmetrically distributed along the elastic element 115. A gap is left between the pin 112 and the inner wall of the limiting plate 204. This gap allows the limiting plate 204 to float up and down relative to the pin 112 and to tilt, automatically adjusting the height of the two conductive rollers 202 under the action of the elastic element 115. This ensures that the two conductive rollers 202 are in close contact with the conductive rail 302 during rolling, so that the tractor automatically levels itself and smoothly passes through the joint of the conductive rail 302. Even if the conductive rail 302 is not level and has a certain height misalignment, it can automatically adjust and balance, ensuring good conductivity and smooth passage. Figure 16 and Figure 17 As shown.

[0028] In some examples, the conductive roller 202 has a recessed center forming a conductive cavity 2021 for the conductive rail 302 to be fitted into. The conductive cavity 2021 forms the outer circumferential surface of the conductive roller 202, which is in close contact with the conductive rail 302, providing rolling contact conductivity. The inner circumferential surface of the conductive roller 202 is in close contact with the conductive wheel axle 205, also providing rolling contact conductivity. This achieves good current conduction during the movement of the traction vehicle. The conductive wheel axle 205 is made of a good conductive material. The conductive wheel axle 205 and the sub-frame 201 are fastened together by riveting or screwing to achieve good contact conductivity.

[0029] In some examples, the portion of the traction frame 1 located on both sides of the traction gear 102 is recessed to form a positioning cavity 113 for the rack 301 to be inserted to position the traction frame 1, thereby positioning the traction vehicle to run on the rack 301, so that the gear on the traction vehicle accurately meshes with the rack 301 of the curtain track 3.

[0030] In some examples, such as Figures 11-18 As shown, a current collector includes a conductive rail 302, a main power supply box 5 that supplies power to the conductive rail 302, a current collector traction vehicle that is in conductive contact with the conductive rail 302, and a driver 4 that is in conductive contact with the current collector traction vehicle and is used to drive the current collector traction vehicle to reciprocate along the length direction of the conductive rail 302. In some examples, the conductive rail 302 has a segmented structure and is made of a conductive material with good conductivity. It includes several conductive rails 302a connected in sequence. Each conductive rail 302a has a stationary contact 305 at one end along its length and a movable contact 306 that makes conductive contact with the stationary contact 305 at the other end. The movable contact 306 is elastically arranged and is tightly fitted into one end of the conductive rail 302a. The stationary contact 305 is tightly fitted into the other end of the conductive rail 302a, or the stationary contact 305 is integrally formed with the conductive rail 302a. (That is, the ends of the conductive rails 302a are solid structures). Two adjacent conductive rails 302a achieve conductive contact through a stationary contact 305 and a moving contact 306. Conductive rails 302 of different lengths can be formed by sequentially splicing conductive rails 302a of different numbers or lengths. The conductive rails 302 connect to the main power supply box 5 and the rolling collector frame 2, ensuring that the driver 4 and its internal motor are in a rolling power supply mode. This reduces friction and wear, lowers power supply noise and interruptions, improves power supply reliability, and ensures good power supply performance for the intelligent curtain track during assembly. The segmented conductive rails 302 may experience height misalignment during assembly. The aforementioned elastically designed collector frame 2 can automatically adjust the height of the conductive rollers 202 on both sides, ensuring that the conductive rollers 202 roll tightly against the conductive rails 302. Figure 16 and Figure 17 As shown.

[0031] In some examples, the main power supply box 5 can be selected according to different user needs, and can be connected to AC current, DC power supply or battery power, etc. The main power supply box 5 is equipped with a main contact spring 501, and an elastic contact spring 304 is installed at one end of the conductive rail 302. The main power supply box 5 and the conductive rail 302 achieve conductive contact through the main contact spring 501 and the elastic contact spring 304.

[0032] The main power supply box 5 provides power, and the current is transmitted to the conductive rail 302 by the main contact spring 501 and the elastic contact spring 304. The adjacent conductive rails 302 are connected to conduct current through the stationary contact 305 and the moving contact 306. Under the action of the elastic element 115, the current collector 2 makes the conductive roller 202 stick to the conductive rail 302 and roll along the conductive rail 302 to always conduct current to the conductive rail 302. The conductive roller 202 is then connected to the current collector 2 through the conductive wheel shaft 205. The elastic contact 404 in the driver 4 contacts the contact plate 203 on the current collector 2 to conduct current. The current supplies power to the driver 4 through the elastic contact 404. The driver 4 controls the internal brushless motor to rotate, so that the driver 4 moves along the track, thereby driving the opening and closing of the curtain.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A modular intelligent curtain current collector traction vehicle, which is in conductive contact with both the curtain track (3) and the driver (4) and moves reciprocally along the length of the curtain track (3) under the action of the driver (4) to drive the curtain to open or close, characterized in that: The tractor unit includes: The traction frame (1) includes a main frame (101), a traction gear (102) mounted on the main frame (101), and a traction roller (103) for rolling engagement with the travel rail (303) of the curtain track (3). The traction gear (102) is located between the rack (301) of the curtain track (3) and the drive gear (401) of the driver (4) and is connected to both in a transmission manner. The current collector (2) includes a sub-frame (201) elastically disposed on the main frame (101) and a conductive roller (202) mounted on the sub-frame (201) for rolling engagement with the conductive rail (302) of the curtain track (3). The first locking mechanism includes a slot (104) formed on the main frame (101) for insertion of the sub-frame (201) and a resilient hook (105) for the sub-frame (201) to pass over and confine within the slot (104). And a second locking mechanism, including a positioning slot (106) on the main frame (101) for insertion of a positioning arm (402) on the driver (4) and a locking slot (107) for locking arm (403) on the driver (4) to engage.

2. The modular intelligent curtain current collector traction vehicle according to claim 1, characterized in that: The main frame (101) has a recessed gear groove (108) for mounting the traction gear (102), and the gear groove (108) is provided with an elastic latch (109) for locking the traction gear (102) in the gear groove (108).

3. The modular intelligent curtain current collector traction vehicle according to claim 1, characterized in that: The main frame (101) protrudes towards the sub-frame (201) to form a pin (112), and an elastic element (115) is sleeved on the pin (112). The sub-frame (201) extends to form a limiting plate (204) for the pin (112) to be inserted. One end of the elastic element (115) abuts against the main frame (101), and the other end abuts against the limiting plate (204).

4. The modular intelligent curtain current collector traction vehicle according to claim 1, characterized in that: The subframe (201) extends to form a contact plate (203), and the main frame (101) has a positioning guide hole (110) through which the elastic contact (404) on the driver (4) passes to make conductive contact with the contact plate (203).

5. The modular intelligent curtain current collector traction vehicle according to claim 2, characterized in that: The groove wall of the gear groove (108) is recessed to form a shaft hole (111) for accommodating the gear shaft (116). The elastic latch (109) is located in the shaft hole (111) and can be deformed under the pressure of the gear shaft (116) to allow it to enter the shaft hole (111) and reset after the gear shaft (116) passes through to lock the traction gear (102) in the gear groove (108).

6. The modular intelligent curtain current collector traction vehicle according to claim 3, characterized in that: The subframe (201) has insertion ends for inserting into slots (104) at both ends along its length. The elastic locking hook (105) includes a rod (1051) and a hook (1052). The rod (1051) forms a groove wall on one side of the slot (104) to laterally limit the insertion end. The hook (1052) is located at the opening of the slot (104) to longitudinally limit the insertion end that enters the slot (104) from the opening. Each subframe (201) has two conductive rollers (202), which are symmetrically distributed along the elastic element (115), and a gap is left between the pin (112) and the inner hole wall of the limiting plate (204).

7. The modular intelligent curtain current collector traction vehicle according to claim 1, characterized in that: The conductive roller (202) has a recessed center forming a conductive cavity (2021) that matches the shape of the conductive rail (302) for it to be inserted into.

8. A current collector, characterized in that: It includes a conductive rail (302), a main power supply box (5) that supplies power to the conductive rail (302), a current collector traction vehicle that is in conductive contact with the conductive rail (302) and is as described in any one of claims 1-7, and a driver (4) that is in conductive contact with the current collector traction vehicle and is used to drive the current collector traction vehicle to reciprocate along the length direction of the conductive rail (302).

9. A current collector according to claim 8, characterized in that: The conductive rail (302) has a segmented structure, which includes a number of conductive rails (302a) connected in sequence. Each conductive rail (302a) has a stationary contact (305) at one end along its length direction and a moving contact (306) at the other end that makes conductive contact with the stationary contact (305). The moving contact (306) is elastically set.

10. A current collector according to claim 8, characterized in that: The host power supply box (5) is equipped with a host contact spring (501), and one end of the conductive rail (302) is equipped with an elastic contact spring (304) for conductive contact with the host contact spring (501).

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