A retractable low-wear moving connector

Abstract

The application discloses a telescopic low-abrasion movable connector, which comprises a shell and a pair of movable contacts, characterized in that a guide support is arranged in the shell and is in sliding connection with the shell, a sliding block is in relative sliding connection with the guide support, a guide block is fixedly arranged in the guide support, a wiring board is fixedly arranged on the shell, and the pair of movable contacts are rotatably arranged on the sliding block; during the process of plugging and unplugging of the connector, the guide support can be driven by external force to drive the guide shaft on the guide block to link the pair of movable contacts and the corresponding static contacts to contact and separate under the condition that the shell and the wiring board remain static.

Description

Technical Field

[0001] This invention belongs to the field of power distribution cabinet technology, specifically relating to a retractable, low-wear dynamic connector that can effectively reduce wear during the insertion and separation of dynamic and static connectors in power distribution cabinets, and extend the service life of the connectors. Background Technology

[0002] In modern power distribution networks and engineering construction, withdrawable low-voltage switchgear is widely used in power plants, substations, and other similar applications. Switchgear plays a crucial role in the conversion, distribution, and control of electrical energy for power distribution, motor control, and lighting equipment. This type of switchgear offers advantages such as space saving, reliable operation, convenient installation and maintenance, strong breaking capacity, and multiple outgoing circuits.

[0003] Primary connectors mainly refer to the connectors used in the primary circuits (i.e., main circuits) of a distribution cabinet. Circuit continuity is achieved through the mating of the moving connector and the stationary connector, and circuit disconnection is achieved by separating the moving connector and the stationary connector. Traditionally, stationary connectors are usually vertical busbars or independent connectors, generally with a stationary copper contact. Moving connectors typically have a clamping copper contact. When the moving connector is mated with the stationary connector, the moving contact is subjected to clamping force, allowing the moving and stationary contacts to make close contact and conduct electricity. Specifically, the mating process involves the moving contact clamping the stationary contact and then sliding forward to complete the mating. The disassembly process is the same as the mating process, but the sliding direction is reversed. The contact method during this process is sliding contact with mutual friction. However, since the moving and stationary contacts are made of copper, which has low hardness, repeated insertion and separation can easily cause the contact surfaces of the connector to wear against each other. Once the contact surfaces of the connector contacts are severely worn, the conductivity will be directly reduced, affecting normal use. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing connectors for power distribution cabinets, which are prone to wear on the contact surface during insertion and separation, thereby reducing the conductivity of the contacts. The invention proposes a retractable, low-wear moving connector. By adding a moving contact position locking and unlocking adjustment mechanism to the moving connector, the wear of the moving connector during insertion and separation from the stationary connector is effectively reduced, thus extending the service life of the connector.

[0005] Technical solution

[0006] To achieve the above-mentioned technical objectives, the present invention proposes a retractable, low-wear dynamic connector, comprising a housing and a pair of moving contacts. The connector is characterized in that: a guide bracket is mounted in the housing and slidably connected to it; a slider is slidably connected to the guide bracket; a guide block is fixedly mounted in the guide bracket; a terminal block is fixedly mounted on the housing; and the pair of moving contacts are rotatably mounted on the slider. During the insertion and disconnection of the connector, while the housing and terminal block remain stationary, an external force can drive the guide bracket, thereby causing the guide shaft on the guide block to link the pair of moving contacts with the corresponding stationary contacts for contact and separation.

[0007] Furthermore, a guide rail is provided on the guide bracket, and the slider is mounted on the guide rail and slidably connected to the guide bracket.

[0008] Furthermore, the outer casing is provided with a sliding groove hole, and the guide bracket is linked to the external pushing mechanism through the sliding groove hole via a linkage arm. The external pushing mechanism can push the guide bracket to slide in the sliding groove hole on the outer casing, thereby driving the guide shaft on the guide block to drive the pair of moving contacts to rotate, realizing the opening and closing of the pair of moving contacts.

[0009] Furthermore, the pair of moving contacts are mounted on the slider via a pair of contact shafts and can rotate around the pair of contact shafts;

[0010] An elastic element is connected between the pair of moving contacts. The elastic element continuously provides a driving force to the pair of moving contacts, causing them to rotate in opposite directions, thereby providing a clamping force during the contact between the pair of moving contacts and the stationary connector.

[0011] Furthermore, the pair of moving contacts are provided with position linkage slots, the slider is provided with position guide limiting slots corresponding to the position linkage slots, and the guide block is provided with guide shafts corresponding to the position guide limiting slots and the position linkage slots. The guide shafts are placed in the position guide limiting slots and the position linkage slots. One end of the spring is connected to the slider and the other end is connected to the guide block. When the spring is in its initial working state, the spring force of the spring causes the guide shaft on the guide block to drive the pair of moving contacts to be in an open state.

[0012] The guide shaft on the guide block can slide back and forth in the position guide limiting slot. During the back and forth sliding of the guide shaft in the position guide limiting slot, it can drive the pair of moving contacts to rotate through the position linkage slot, thereby realizing the opening and closing of the pair of moving contacts.

[0013] Furthermore, when the guide shaft slides from the end away from the pair of contact shafts to the end closer to the pair of contact shafts within the position guide limiting slot, the guide shaft, through the position linkage slot, links the pair of moving contacts to rotate in opposite directions.

[0014] Furthermore, the direction of movement of the guide shaft within the position guide limiting slot is parallel to the insertion direction of the connector.

[0015] Furthermore, the elastic element is a tension spring, with both ends of the tension spring respectively mounted on the tension spring hooks on the pair of moving contacts. The compression spring continuously provides a driving force to the pair of moving contacts, causing them to rotate in opposite directions, thereby providing a clamping force during the contact between the pair of moving contacts and the stationary connector.

[0016] Furthermore, the position linkage slot is an oblong or triangular hole.

[0017] Furthermore, one end of the spring is placed in the spring groove on the slider, and the other end is mounted on the spring post on the guide block. The extension and retraction direction of the spring is parallel to the insertion direction of the connector.

[0018] Furthermore, the housing and wiring board are connected to external fasteners.

[0019] Furthermore, the junction box is T-shaped.

[0020] Furthermore, the pair of moving contacts and the guide block are electrically connected in the form of a surface connection;

[0021] The guide block and the guide bracket can be integrated or separate. When the guide block and the guide bracket are integrated, both the guide block and the guide bracket are metal parts. When the guide block and the guide bracket are separate, the guide block is a metal part and the guide bracket is an insulating part.

[0022] The guide block is provided with a guide strip, and the slider is provided with a guide strip hole that cooperates with the guide strip, with the guide strip located inside the guide strip hole.

[0023] Beneficial effects

[0024] This invention provides a retractable, low-wear moving connector. By adding a moving contact position locking and unlocking adjustment mechanism to the moving connector, the opening and closing distance between the two moving contacts can be accurately controlled. This ensures that the sliding process during insertion is contactless and frictionless. After insertion, the moving contact clamps the stationary contact to conduct electricity. During separation, the moving contact opens first, achieving contactless sliding separation and thus zero wear. The entire process involves only minimal wear from the contact between the moving and stationary contacts in the conductive state. Simultaneously, a guide bracket allows for the insertion and separation of the connector without requiring the drawer unit of the switch cabinet to be pulled out. Attached Figure Description

[0025] Appendix Figure 1 This is a product diagram of an embodiment of the present invention.

[0026] Appendix Figure 2 This is a structural schematic diagram of an embodiment of the present invention.

[0027] Appendix Figure 3 This is an exploded view of an embodiment of the present invention.

[0028] Appendix Figure 4 It is attached Figure 2 A cross-sectional view along the U-axis.

[0029] Appendix Figure 5 This is a bottom view of an embodiment of the present invention.

[0030] Appendix Figure 6 This is a right view of an embodiment of the present invention.

[0031] Appendix Figure 7 It is attached Figure 6 A cross-sectional view along the V-axis.

[0032] Appendix Figure 8 This is a product diagram of the outer casing in an embodiment of the present invention.

[0033] Appendix Figure 9a This is a product diagram of the moving contact in an embodiment of the present invention.

[0034] Appendix Figure 9b This is a schematic diagram of the shape of the position linkage slot in Embodiment 1 of the present invention.

[0035] Appendix Figure 10a This is a product drawing of the slider in an embodiment of the present invention.

[0036] Appendix Figure 10b This is the front view of the slider in an embodiment of the present invention.

[0037] Appendix Figure 11 This is a product diagram of the guide block in an embodiment of the present invention.

[0038] Appendix Figure 12 This is a schematic diagram of the guide rail position in an embodiment of the present invention.

[0039] Appendix Figure 13 This is a product diagram of the guide bracket in an embodiment of the present invention.

[0040] Appendix Figure 14 This is a schematic diagram of the static plug-in just being inserted in an embodiment of the present invention.

[0041] Appendix Figure 15 This is a schematic diagram of the contact between the static plug-in and the dynamic plug-in in an embodiment of the present invention. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "inner," "outer," "front," "rear," "left," "right," "usual side," and "spare side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0046] Example 1

[0047] Existing plug-in systems used in distribution cabinets experience prolonged sliding contact friction during insertion and disengagement. This repeated sliding contact friction over extended periods can lead to severe wear on the moving contacts of the moving plug and the stationary contacts of the stationary plug, even directly reducing conductivity. To address this problem, this embodiment proposes a retractable, low-wear moving connector, as shown in the attached figure. Figure 1 As shown in Figures 2, 3, and 4, it includes a housing 7 and a pair of moving contacts 1, 1'. A guide bracket 11 is mounted in the housing 7 and is slidably connected to the housing 7. A slider 4 is slidably connected to the guide bracket 11. A guide block 6 is fixedly mounted in the guide bracket 11. A terminal block 9 is fixedly mounted on the housing 7, as shown in the attached figure. Figure 3 As shown in the attached diagram, the guide block 6 is provided with a guide strip 603. Figure 10a and 10bAs shown, the slider 4 has a guide bar hole 403 that mates with the guide bar 603, and the guide bar 603 is located within the guide bar hole 403. The guide block 6 and the guide bracket 11 can be integrated or separate. When the guide block 6 and the guide bracket 11 are integrated, both the guide block 6 and the guide bracket 11 are metal parts; when the guide block 6 and the guide bracket 11 are separate, the guide block 6 is a metal part, and the guide bracket 11 is an insulating part. In this embodiment, the guide block 6 and the guide bracket 11 are separate.

[0048] As attached Figure 2 and 3 As shown, the pair of moving contacts 1, 1' are rotatably mounted on the slider 4. During the insertion and disconnection of the connector, while the housing 7 and the terminal block 9 remain stationary, an external force can drive the guide bracket 11, thereby causing the guide shafts 601, 601' on the guide block 6 to link the pair of moving contacts 1, 1' and the corresponding stationary contacts to contact and separate. In this embodiment, as shown in the attached diagram... Figure 13 As shown, the guide bracket 11 is provided with the following... Figure 12 The guide rails 8 and 8' are shown, and the slider 4 is mounted on the guide rails 8 and 8' and slidably connected to the guide bracket 11. (See attached diagram) Figure 8 As shown, the outer casing 7 is provided with sliding groove holes 701. The number of sliding groove holes 701 is unlimited, and they can be provided on any side of the outer casing 7, such as in the attached figure. Figure 5 As shown in Figures 6 and 7, the guide bracket 11 is linked to the external pushing mechanism via a linkage arm 1101 passing through the slide hole 701. The external pushing mechanism can push the guide bracket 11 to slide within the slide hole 701 on the housing 7, thereby driving the guide shafts 601, 601' on the guide block 6 to rotate the pair of moving contacts 1, 1', realizing the opening and closing of the pair of moving contacts. Similarly, the linkage arm 1101 can also be provided on the external pushing mechanism, and the guide bracket 11 is provided with a mating hole that links with the linkage arm 1101 provided on the external pushing mechanism. The linkage arm 1101 extends into the slide hole 701 and links with the guide bracket 11. Both methods can achieve the same technical purpose.

[0049] Further explanation of the above components, in conjunction with the accompanying drawings, is as follows: Figure 1 and 3As shown, the pair of moving contacts 1,1' includes at least two opposing moving contact pieces. In this embodiment, the pair of moving contacts 1,1' includes four opposing moving contact pieces. An elastic element 2 connects the pair of moving contacts 1,1'. In this embodiment, the elastic element 2 is preferably a tension spring. The two ends of the tension spring are respectively mounted on the tension spring hooks 101,101' on the pair of moving contacts 1,1', which continuously provide the pair of moving contacts 1,1' with a driving force that tends to rotate in the opposite direction, thereby providing clamping force during the contact between the pair of moving contacts 1,1' and the stationary insert 3 (generally referring to a vertical busbar or independent insert).

[0050] As attached Figure 2 As shown, in this embodiment, the pair of moving contacts 1,1' are mounted on the slider 4 via a pair of contact shafts 5,5' and can rotate around the pair of contact shafts 5,5'. (See attached diagram) Figure 2 As shown in Figures 3, 9a and 9b, the pair of moving contacts 1, 1' are provided with position linkage slots 102, 102', as shown in the attached figure. Figure 3 As shown in Figure 10, the slider 4 is provided with position guide and limiting slots 401 and 401' corresponding to the position linkage slots 102 and 102'. (See attached figure) Figure 2 and 11 As shown, guide shafts 601 and 601' are provided on the guide block 6 at positions corresponding to the position guide limiting slots 401 and 401' and the position linkage slots 102 and 102', and the guide shafts 601 and 601' are placed in the position guide limiting slots 401 and 401' and the position linkage slots 102 and 102'.

[0051] As attached Figure 2 As shown, the outer casing 7 and the preferably T-shaped terminal block 9 are connected to an external fastener, which is preferably a drawer unit. In this embodiment, there are multiple ways to achieve electrical connection. For example, the pair of moving contacts 1,1' and the guide block 6 are electrically connected via a surface connection; or the pair of moving contacts 1,1' and the guide block 6, or the pair of moving contacts 1,1' and the terminal block 9, are electrically connected using copper foil strips, copper braided strips, or copper braided wires. (See attached diagram) Figure 2 and 6As shown, one end of the spring 10 is connected to the slider 4, and the other end is connected to the guide block 6. In this embodiment, one end of the spring 10 is placed in the spring groove 402 on the slider 4, and the other end is mounted on the spring post 602 on the guide block 6. The extension and retraction direction of the spring 10 is parallel to the insertion direction of the connector. The ends of the position guide limiting slots 401, 401' away from the pair of contact shafts 5, 5' can play a limiting role. When the spring 10 is in the initial working state, the spring 10 makes the slider 4 away from the guide block 6. At this time, the guide shafts 601, 601' abut against the ends of the corresponding position guide limiting slots 401, 401' away from the pair of contact shafts 5, 5', so that the spring 10 has a certain initial working force. This initial working force ensures that the pair of moving contacts 1, 1' will not shake or have their spacing reduced due to the tension of the elastic element 2. Figure 14As shown, when the spring 10 is in its initial working state, the spring force of the spring 10 causes the guide shafts 601, 601' on the guide block 6 to drive the pair of moving contacts 1, 1' into an open state. When the spring 10 is in its initial working state, the gap between the pair of moving contacts 1, 1' is larger than the thickness of the stationary contact of the stationary plug-in 3, so that the pair of moving contacts 1, 1' do not contact the stationary contact. During the relative sliding process of insertion and separation, the lack of contact between the pair of moving contacts 1, 1' and the stationary contact can avoid wear. When the moving plug-in and the stationary plug-in 3 are inserted and connected, the spring 10 is compressed. When the moving plug-in and the stationary plug-in 3 are separated, the spring 10 can preferentially reset the guide shafts 601, 601' to the position furthest away from the stationary plug-in 3 within the position guide limiting slots 401, 401'. That is, the moving plug and the stationary plug 3 are released from contact first, and then the moving plug is completely separated from the stationary plug 3, thereby avoiding contact and friction between the moving and stationary contacts during separation. The guide shafts 601 and 601' of the guide block 6 can slide back and forth within the position guide limiting slots 401 and 401'. Generally speaking, the direction of movement of the guide shafts 601 and 601' within the position guide limiting slots 401 and 401' is preferably parallel to the insertion direction of the connector to achieve the best motion transmission effect. During the back and forth sliding of the guide shafts 601 and 601' within the position guide limiting slots 401 and 401', the pair of moving contacts 1 and 1' can be rotated through the position linkage slots 102 and 102' to realize the opening and closing of the pair of moving contacts 1 and 1'. When the guide shafts 601 and 601' slide within the position guide limiting slots 401 and 401' from the end away from the pair of contact rotating shafts 5 and 5' to the end closer to the pair of contact rotating shafts 5 and 5', the guide shafts 601 and 601' are linked by the position linkage slots 102 and 102' to rotate the pair of moving contacts 1 and 1' in opposite directions. When the guide shafts 601 and 601' move to the end closer to the pair of contact rotating shafts 5 and 5' within the position guide limiting slots 401 and 401', the pair of moving contacts 1 and 1' clamp the stationary connector 3 as shown in the attached figure. Figure 15 As shown in the attached figure. In this embodiment, the position guide limiting slots 401 and 401' are straight slots with arc-shaped ends, and the position linkage slots 102 and 102' are preferably as shown in the attached figure. Figure 9a Waist-shaped hole or as attached Figure 9b The triangular hole. However, it should be noted that the shapes of the position linkage slots 102, 102' and the position guide limiting slots 401, 401' are not limited to the shapes provided in this embodiment. Any shape of the position linkage slots 102, 102' and the position guide limiting slots 401, 401' that can achieve the technical purpose of this embodiment should be considered as the shape claimed by this invention.

[0052] In this embodiment, as shown in the appendix Figure 14When the moving plug-in is close to the stationary plug-in 3, the housing 7 and the external fixing parts are connected, and the housing 7 and the terminal block 9 remain stationary. The external force of the external pushing mechanism acts on the linkage arm 1101 of the guide bracket 11, causing the guide block 6 to move forward. When the slider 4 contacts the stationary plug-in 3, it stops. Then the linkage arm 1101 of the guide bracket 11 and the guide bracket 11 continue to push towards the stationary plug-in 3. The guide block 6 is brought closer to the stationary plug-in 3 by the guide bracket 11. The spring 10 is compressed by the guide block 6. The guide shafts 601, 601' slide along the position guide limit slots 401, 401'. The guide position linkage slots 102, 102' change angle, so that a pair of moving contacts 1, 1' are clamped by the tension of the tension spring 2, as shown in the attached figure. Figure 15 As shown.

[0053] When the moving plug leaves the stationary plug 3, the housing 7 and the external fixing parts are connected, and the housing 7 and the terminal block 9 remain stationary. The guide block 6 moves together with the guide bracket 11. Under the elastic force of the spring 10, the slider 4 will temporarily remain in contact with the stationary plug 3. The guide shafts 601 and 601' gradually move away from the stationary plug along the position guide limit slots 401 and 401' and gradually open up the pair of moving contacts 1 and 1'. At this time, the pair of moving contacts 1 and 1' disengage from the stationary plug until 601 and 601' move to the farthest end of the position guide limit slots 401 and 401' away from the stationary plug 3. At this time, the slider 4 and the pair of moving contacts 1 and 1' leave the stationary plug 3 together with the guide bracket 11.

[0054] This invention provides a low-wear moving connector. By adding a moving contact position locking and unlocking adjustment mechanism to the moving connector, the opening and closing distance between the two moving contacts can be accurately controlled. This ensures that the sliding process during insertion is contactless and frictionless. After insertion, the moving contact clamps the stationary contact to conduct electricity. During separation, the moving contact opens first, achieving contactless sliding separation and thus zero wear. The entire process involves only a small amount of wear due to the necessary contact between the moving and stationary contacts in the conductive state.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A retractable, low-wear moving connector, comprising a housing (7) and a pair of moving contacts (1, 1'), characterized in that: The guide bracket (11) is installed in the housing (7) and can be slidably connected to the housing (7). The slider (4) is slidably connected to the guide bracket (11). The guide block (6) is fixedly installed in the guide bracket (11). The terminal block (9) is fixedly installed on the housing (7). The pair of moving contacts (1,1') are rotatably installed on the slider (4). When the connector is inserted and disconnected, while the housing (7) and the terminal block (9) remain stationary, the guide bracket (11) can be driven by external force to drive the guide shaft (601,601') on the guide block (6) to link the pair of moving contacts (1,1') and the corresponding stationary contacts to contact and separate. The pair of moving contacts (1,1') are provided with position linkage slots (102,102'), and the slider (4) is provided with position guide limiting slots (401,401') corresponding to the position linkage slots (102,102'). The guide block (6) is provided with guide shafts (601,601') corresponding to the position guide limiting slots (401,401') and the position linkage slots (102,102'). The guide shafts (601,601') are placed in the position guide limiting slots (401,401') and the position linkage slots (102,102'). One end of the spring (10) is connected to the slider (4), and the other end is connected to the guide block. (6) When the spring (10) is in its initial working state, the spring force of the spring (10) causes the guide shaft (601, 601') on the guide block (6) to drive the pair of moving contacts (1, 1') to be in the open state; the guide shaft (601, 601') on the guide block (6) can slide back and forth in the position guide limiting slot (401, 401'), and the guide shaft (601, 601') can rotate the pair of moving contacts (1, 1') through the position linkage slot (102, 102') during the back and forth sliding process in the position guide limiting slot (401, 401'), thereby realizing the opening and closing of the pair of moving contacts (1, 1').

2. The retractable low-wear dynamic connector as described in claim 1, characterized in that: The guide bracket (11) is provided with guide rails (8,8'), and the slider (4) is mounted on the guide rails (8,8') and is slidably connected to the guide bracket (11).

3. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The outer casing (7) is provided with a sliding groove hole (701). The guide bracket (11) passes through the sliding groove hole (701) and is linked with the external push mechanism through the linkage arm (1101). The external push mechanism can push the guide bracket (11) to slide in the sliding groove hole (701) on the outer casing (7), thereby driving the guide shaft (601, 601') on the guide block (6) to drive the pair of moving contacts (1, 1') to rotate, so as to realize the opening and closing of the pair of moving contacts (1, 1').

4. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The pair of moving contacts (1,1') are mounted on the slider (4) by a pair of contact shafts (5,5') and can rotate around the pair of contact shafts (5,5'); An elastic element (2) is connected between the pair of moving contacts (1,1'), and the elastic element (2) continuously provides the pair of moving contacts (1,1') with a driving force that tends to rotate in the opposite direction, thereby providing a clamping force during the contact between the pair of moving contacts (1,1') and the stationary connector (3).

5. A retractable, low-wear dynamic connector as described in claim 4, characterized in that: When the guide shaft (601, 601') slides from the end away from the pair of contact shafts (5, 5') to the end close to the pair of contact shafts (5, 5') within the position guide limiting slot (401, 401'), the guide shaft (601, 601') drives the pair of moving contacts (1, 1') to rotate in opposite directions through the position linkage slot (102, 102').

6. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The guide shaft (601, 601') moves in the position guide limiting slot (401, 401') in a direction parallel to the connector insertion direction.

7. A retractable, low-wear dynamic connector as described in claim 4, characterized in that: The elastic element (2) is a tension spring, with its two ends respectively mounted on the tension spring hooks (101,101') on the pair of moving contacts (1,1'). The tension spring continuously provides the pair of moving contacts (1,1') with a driving force that tends to rotate in the opposite direction, thereby providing a clamping force during the contact between the pair of moving contacts (1,1') and the stationary connector (3).

8. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The position linkage slot (102, 102') is an oblong or triangular hole.

9. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: One end of the spring (10) is placed in the spring groove (402) on the slider (4), and the other end is mounted on the spring post (602) on the guide block (6). The extension and retraction direction of the spring (10) is parallel to the insertion direction of the connector.

10. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The outer casing (7) and the terminal block (9) are connected to the external fasteners.

11. A retractable, low-wear dynamic connector as described in claim 10, characterized in that: The junction box (9) is T-shaped.

12. A retractable, low-wear dynamic connector as described in claim 1, characterized in that: The pair of moving contacts (1,1') and the guide block (6) are electrically connected in the form of a surface connection; The guide block (6) and the guide bracket (11) can be integrated or separate. When the guide block (6) and the guide bracket (11) are integrated, both the guide block (6) and the guide bracket (11) are metal parts. When the guide block (6) and the guide bracket (11) are separate, the guide block (6) is a metal part and the guide bracket (11) is an insulating part. The guide block (6) is provided with a guide strip (603), and the slider (4) is provided with a guide strip hole (403) that cooperates with the guide strip (603). The guide strip (603) is located in the guide strip hole (403).

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