A double-ended terminal block structure

Abstract

This application discloses a double-ended terminal block structure, comprising: a metal sleeve, a driving mechanism, and two elastic wire-fixing mechanisms. The metal sleeve has an installation cavity, and each end of the installation cavity forms a frustum-shaped limiting cavity. The driving mechanism is disposed within the installation cavity and includes a support rod arranged along the length of the metal sleeve, abutment members movably disposed at both ends of the support rod, a power component, and a first elastic member disposed between the power component and the abutment members. The two elastic wire-fixing mechanisms are respectively installed in the two limiting cavities. Each elastic wire-fixing mechanism includes an elastic self-locking member and a second elastic member. The elastic self-locking member is used to connect and lock the wire, and the second elastic member is disposed between the abutment members and the elastic self-locking member. This application reduces the crimping process and adds a manual locking structure, effectively ensuring that the wires connected at both ends are stably locked to the terminal.

Description

Technical Field

[0001] This application relates to the technical field of electrical fittings, and more particularly to a double-ended terminal block structure. Background Technology

[0002] In the field of power cable technology, terminals are commonly used as structures for electrical connections between power equipment and electronic devices. Double-ended terminals, a common type, require wires to be connected at both ends. Currently, double-ended terminals use a crimping method to lock the wires in place after insertion. This method is not only inefficient but also easily damages the terminals, rendering them disposable and resulting in significant resource waste. While a crimp-free method could effectively solve the crimping problem, crimp-free methods rely on passive locking, which can become ineffective when structural wear occurs. Summary of the Invention

[0003] The purpose of this application is to provide a double-ended terminal block structure that can solve the above-mentioned problems in the prior art, reduce the crimping process, and add a manual locking structure to effectively ensure that the wires connected at both ends are stably locked to the terminal.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On the one hand, a double-ended terminal block structure is provided, including: a metal sleeve, in which a cylindrical mounting cavity is formed at the middle, and frustum-shaped limiting cavities are formed at both ends of the mounting cavity, and the two limiting cavities are seamlessly connected to the two ends of the mounting cavity respectively;

[0006] A drive mechanism is disposed within the mounting cavity. The drive mechanism includes a support rod disposed along the length of the metal sleeve, abutment members movably disposed at both ends of the support rod, a power component, and a first elastic member disposed between the power component and the abutment members.

[0007] Two elastic wire-fixing mechanisms are respectively installed in the two limiting cavities. Each elastic wire-fixing mechanism includes an elastic self-locking member and a second elastic member. The elastic self-locking member is used to connect and lock the wire body, and the second elastic member is disposed between the abutting member and the elastic self-locking member.

[0008] The power assembly can press the first elastic member toward the abutment member, thereby compressing the first elastic member and driving the abutment member to move toward the elastic self-locking member. The elastic self-locking member moves in the limiting cavity along the direction with a small radius under the drive of the second elastic member, thereby locking the line.

[0009] Furthermore, the power assembly includes a movable component, a power component, and a transmission component. The power component is vertically mounted on the support rod and is capable of moving up and down relative to the support rod in a direction perpendicular to the length of the support rod. The transmission component is disposed at both ends of the power component. The movable component is movably disposed on the support rod and abuts against the end of the first elastic component away from the abutting component. The downward movement of the power component is achieved by the transmission component pushing the movable component relative to the first elastic component, thereby squeezing the first elastic component and driving the abutting component to move towards the second elastic component.

[0010] Furthermore, the movable component includes a plate, a connecting rod extending vertically from the plate towards the power component, and a cam disposed at one end of the connecting rod away from the plate, the cam engaging with the transmission component for transmission.

[0011] Furthermore, a guide rail is provided on the support rod, and a guide post that slides and guides the connecting rod toward the support rod.

[0012] Furthermore, the transmission component is a wedge-shaped adjusting block.

[0013] Furthermore, the power component is an adjusting screw, with one end of the adjusting screw extending out of the metal sleeve away from the support rod, and an adjusting hole provided on its surface.

[0014] Furthermore, the outer periphery of the metal sleeve is covered with an insulating shell.

[0015] Furthermore, a guide shell is provided inside the mounting cavity, the guide shell covers the driving mechanism, and the guide shell has a guide hole that cooperates with the abutment member for guidance.

[0016] Furthermore, it also includes a locking element that passes through and locks the insulating shell, the metal sleeve, and the guide shell.

[0017] Furthermore, the two ends of the metal sleeve are provided with limiting shells that cooperate with and limit the elastic self-locking member.

[0018] The beneficial effects of this application are as follows: During use, the wire is inserted into the elastic self-locking component from the limiting cavities at both ends of the metal sleeve. Driven by the wire, the elastic self-locking component compresses the second elastic component and moves towards the direction with a larger radius of the limiting cavity, so that the wire can be completely covered by the elastic self-locking component. When the force acting on the wire is removed, the elastic self-locking component will move towards the direction with a smaller radius of the limiting cavity under the elastic force of the abutment and the second elastic component. If the elastic force of the second elastic component cannot effectively push the elastic self-locking component to move, the power component moves relative to the support rod, so that the transmission component abuts against the movable component, pushing the movable component to move towards the first elastic component, thereby squeezing the first elastic component. The elastic force of the first elastic component being compressed can push the abutment further towards the elastic self-locking component, which is equivalent to adding a human intervention structure to the movement of the elastic self-locking component, ensuring that the elastic self-locking component can effectively lock the wire and avoid the wire from loosening, thereby ensuring the stability and reliability of the terminal block. Attached Figure Description

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the double-ended terminal block structure described in the embodiments of this application;

[0021] Figure 2 This is an exploded view of the double-ended terminal block structure described in the embodiments of this application;

[0022] Figure 3 This is a top view of the metal sleeve described in the embodiment of this application;

[0023] Figure 4 Examples of this application Figure 3 Schematic diagram of the cross section at point AA;

[0024] Figure 5 This is a schematic diagram of the drive mechanism described in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the power component described in an embodiment of this application.

[0026] In the diagram: 1. Metal sleeve; 101. Mounting cavity; 102. Limiting cavity; 2. Drive mechanism; 201. Support rod; 202. Abutment part; 203. Power component; 204. First elastic element; 2031. Power component; 2032. Moving part; 2033. Transmission component; 2034. Plate; 2035. Connecting rod; 2036. Cam; 2037. Guide post; 3. Elastic wire fixing mechanism; 301. Elastic self-locking element; 302. Second elastic element; 3011. Self-locking part; 3012. Wire sleeve part; 4. Insulating shell; 5. Guide shell; 6. Limiting shell; 7. Locking element. Detailed Implementation

[0027] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1-6 As shown, this embodiment provides a double-ended terminal block structure, including: a metal sleeve 1, a driving mechanism 2, and two elastic wire fixing mechanisms 3. The metal sleeve 1 has a cylindrical mounting cavity 101 formed in the middle of its interior. The mounting cavity 101 has frustum-shaped limiting cavities 102 formed at both ends. The two limiting cavities 102 are seamlessly connected to the two ends of the mounting cavity 101.

[0031] The drive mechanism 2 is disposed in the mounting cavity 101. The drive mechanism 2 includes a support rod 201 disposed along the length of the metal sleeve 1, abutment members 202 movably disposed at both ends of the support rod 201, a power assembly 203, and a first elastic member 204 disposed between the power assembly 203 and the abutment members 202.

[0032] The two elastic wire fixing mechanisms 3 are respectively installed in the two limiting cavities 102. The elastic wire fixing mechanism 3 includes an elastic self-locking member 301 and a second elastic member 302. The elastic self-locking member 301 is used to connect and lock the wire body. The second elastic member 302 is disposed between the abutting member 202 and the elastic self-locking member 301.

[0033] The power component 203 can press the first elastic member 204 toward the abutment member 202, thereby compressing the first elastic member 204 and driving the abutment member 202 to move toward the elastic self-locking member 301. The elastic self-locking member 301 moves in the limiting cavity 102 along the direction with a small radius under the drive of the second elastic member 302, thereby locking the line.

[0034] Based on the above scheme, the cylindrical mounting cavity 101 in the middle of the metal sleeve 1 is connected to limiting cavities 102 at both ends. The limiting cavities 102 are frustoconical in shape, and their radius gradually decreases from the connection point with the mounting cavity 101 towards the direction away from the mounting cavity 101. The elastic self-locking member 301 can slide within the limiting cavity 102. When the elastic self-locking member 301 moves to a position with a smaller radius in the limiting cavity 102, the inner wall of the limiting cavity 102 will abut against the elastic self-locking member 301 and contract. Conversely, when the elastic self-locking member 301 moves to a position with a larger radius in the limiting cavity 102, there is a clearance fit between the inner wall of the limiting cavity 102 and the elastic self-locking member 301, and the elastic self-locking member 301 returns to its original state. The locking space inside the elastic self-locking member 301 is relatively large. This allows the yarn to be fully inserted into the elastic self-locking member 301. During use, the two yarns are inserted into the elastic self-locking member 301 from the limiting cavities 102 on both sides. At this time, a force is applied to the yarn, pushing the elastic self-locking member 301 to move in the direction with the larger radius within the limiting cavity 102. The elastic self-locking member 301 will be compressed against the second elastic member 302 in the direction relative to the abutment member 202. The first elastic member 204 is compressed relative to the center of the force by the abutment member 202. When both the first elastic member 204 and the second elastic member 302 are fully compressed, the yarn is also fully inserted into the elastic self-locking member 301. At this time, the elastic self-locking member 301 can cover the yarn to the maximum extent, playing a preliminary locking and limiting role. Then, the force applied to the yarn is removed. At this time, the power assembly 203 is not activated, so the elastic self-locking member 301 will move in the direction of smaller radius within the limiting cavity 102 under the elastic force of the first elastic member 204 and the second elastic member 302 being compressed. When the elastic self-locking member 301 moves to the position of smaller radius, the inner wall of the limiting cavity 102 will contract against the elastic self-locking member 301. The contraction of the elastic self-locking member 301 will squeeze the internal thread, increasing the friction between the elastic self-locking member 301 and the thread, thereby stabilizing and locking the thread and preventing it from loosening and falling off during use. If the elastic force of the first elastic member 204 and the second elastic member 302 is insufficient to lock the thread, it can be further locked by manual intervention, specifically by applying force. On the power assembly 203, the power assembly 203 compresses the first elastic member 204. The elastic force of the first elastic member 204 can push against the abutment member 202 and move, which increases the force acting on the elastic self-locking member 301. In this way, the elastic self-locking member 301 can move relative to the abutment member again, thereby locking the line. It should be noted that when the power assembly 203 is not in operation, the elastic force of the first elastic member 204 is the force of its own compression and recovery. This force acts on both ends. However, the elastic force generated by the compression of the power assembly 203 can act in the direction towards the abutment member 202. In short, the force in the direction relative to the abutment member 202 will be greater, so it can move further against the abutment member 202.This solution adds a human intervention mechanism to the movement of the elastic self-locking component 301, ensuring that the component effectively locks the wire and prevents it from loosening. This guarantees the stability and reliability of the terminal block, prevents damage, extends its service life, and allows for recycling, avoiding resource waste.

[0035] Furthermore, such as Figure 5 As shown, the power assembly 203 includes a movable component 2032, a power component 2031, and a transmission component 2033. The power component 2031 is vertically mounted on the support rod 201 and can move up and down relative to the support rod 201 in a length direction perpendicular to the support rod 201. The transmission component 2033 is disposed at both ends of the power component 2031. The movable component 2032 is movably disposed on the support rod 201 and abuts against the end of the first elastic member 204 away from the abutment member 202. The downward movement of the power component 2031 is achieved by the transmission component 2033 pushing the movable component 2032 relative to the first elastic member 204, thereby squeezing the first elastic member 204 and driving the abutment member 202 to move towards the second elastic member 302. In this scheme, when the power component 2031 moves downward relative to the support rod 201, the transmission components 2033 at both ends of the power component 2031 move downward synchronously. The transmission components 2033 contact the movable component 2032 and push the movable component 2032 towards the first elastic component 204. This can compress the first elastic component 204, so that the first elastic component 204 can push the abutment component 202 towards the second elastic component 302. This drives the elastic self-locking component 301 to move in the direction of smaller radius within the limiting cavity 102. The elastic self-locking component 301 retracts and presses the line body. In other words, when the elastic self-locking component 301 locks the line body, it can prevent the elastic self-locking component 301 from moving in the direction of larger radius.

[0036] Furthermore, such as Figure 6As shown, the movable component 2032 includes a plate 2034, a connecting rod 2035 extending vertically from the plate 2034 toward the power component 2031, and a cam 2036 disposed at one end of the connecting rod 2035 away from the plate 2034. The cam 2036 abuts against the transmission component 2033 for transmission. The plate 2034 is disposed opposite to the abutting component 202. The first elastic component 204 abuts between the abutting component 202 and the plate 2034. When the transmission component 2033 moves downward, it pushes the cam 2036, along with the connecting rod 2035 and the plate 2034, toward the first elastic component 204, thereby compressing the first elastic component 204. The reason for setting the cam 2036 to cooperate with the transmission component 2033 is that the cam 2036 and the transmission component 2033 have good contact and can effectively convert the vertical movement of the transmission component 2033 into the horizontal movement of the plate 2034.

[0037] It is worth mentioning that one end of the power component 2031 is provided with an adjustment hole, which can be used with a screwdriver to drive it. Moreover, the end of the power component 2031 with the adjustment hole needs to be exposed for easy operation.

[0038] To prevent the movable part 2032 from shifting during movement, a guide rail is provided on the support rod 201. The connecting rod 2035 is connected to a guide post 2037 that slides along the guide rail towards the support rod 201. The guide post 2037 provides support and guidance. The transmission part 2033 works with the cam 2036 for transmission. The guide post 2037 slides along the guide rail, allowing the plate 2034 to move along the direction of the guide rail. This also prevents horizontal tilting on one side of the cam 2036, ensuring the integrity of the movement of the movable part 2032.

[0039] Optionally, the transmission component 2033 is a wedge-shaped adjusting block, and the power component 2031 is an adjusting screw. The end of the adjusting screw that is away from the support rod 201 extends out of the metal sleeve 1, and its surface is provided with an adjusting hole. The bottom surface of the wedge-shaped adjusting block that contacts the cam 2036 is an inclined surface, and the connection position of the automatic force component 2031 is set outward and upward. In this way, when the wedge-shaped adjusting block moves downward, the contact height between its bottom surface and the cam 2036 gradually changes, which can push the cam 2036 to move relative to the first elastic component 204. The adjusting screw and the support rod 201 are connected by a thread, that is, when the adjusting screw is turned clockwise, it can move downward relative to the support rod 201, and when it is turned counterclockwise, it moves upward. This can achieve precise adjustment and maintain relative stability of the position after adjustment.

[0040] For safety reasons, the outer circumference of the metal sleeve 1 is provided with an insulating shell 4. The insulating shell 4 serves to isolate the current and prevent electric shock and other dangers during use, thus ensuring the safety of the operator.

[0041] Furthermore, a guide shell 5 is provided inside the mounting cavity 101, which covers the driving mechanism 2. The guide shell 5 has a guide hole that cooperates with and guides the abutment member 202. The guide shell 5 serves to support and protect the driving mechanism 2, and the guide hole can cooperate with the abutment member 202 to guide it, so that the abutment member 202 can move in a specified direction when moving. Moreover, the guide hole needs to be aligned with the second elastic member 302 and the elastic self-locking member 301, so that the abutment member 202 can drive the second elastic member 302 and the elastic self-locking member 301 to move in a straight line.

[0042] In addition, a locking component 7 is included, which passes through the insulating shell 4, the metal sleeve 1, and the guide shell 5 and locks them in place. Holes corresponding to the locking rod are formed along the same straight line on the insulating shell 4, the metal sleeve 1, and the guide shell 5. The locking component 7 passes through the insulating layer, the metal sleeve 1, and the guide shell 5 sequentially from the outside to the inside to complete the assembly, enabling the four components to be stably assembled together and providing precise positioning and installation.

[0043] Preferably, the two ends of the metal sleeve 1 are provided with limiting shells 6 that cooperate with and limit the elastic self-locking member 301. In order to prevent the elastic self-locking member 301 from disengaging from the metal sleeve 1 during movement, limiting shells 6 are provided at both ends of the metal sleeve 1. The inner circumferential wall of the limiting shell 6 is provided with a limiting plate. When the elastic self-locking member 301 moves to abut against the limiting plate, the elastic self-locking member 301 can not move further, preventing it from disengaging. Moreover, the limiting plate and the second elastic member 302 abut against the two ends of the elastic self-locking member 301 can stabilize the position of the elastic self-locking member 301 in the limiting cavity 102.

[0044] Furthermore, the metal sleeve 1 is longer than the insulating shell 4, and the midpoint lines of the metal sleeve 1 and the insulating shell 4 are symmetrical, meaning that both ends of the metal sleeve 1 extend beyond the insulating shell 4. The limiting shell 6 is spliced ​​with the insulating shell 4 and fitted onto both ends of the metal sleeve 1. Simply put, the limiting shell 6 is also an insulator, and the limiting shell 6 and the insulating shell 4 are seamlessly connected, ensuring the integrity of the terminal block surface. The limiting shell 6 and the insulating shell 4 can be connected by a snap-fit ​​method, improving the ease of assembly.

[0045] In some embodiments, the elastic self-locking member 301 includes a self-locking portion 3011 and a sleeve portion 3012. The sleeve portion 3012 is used to wrap the wire and is slidably installed inside the self-locking portion 3011. The sleeve portion 3012 abuts against the second elastic member 302. Since the exposed copper wire outside the wire body is scattered, the sleeve portion 3012 can wrap the scattered copper wire and then slide out to the right inside the self-locking portion 3011. That is to say, the sleeve portion 3012 can pass through the right side of the self-locking portion 3011. However, when the sleeve portion 3012 moves to the left, it is locked by the structure of the self-locking portion 3011 itself, so that the sleeve portion 3012 cannot move to the left at will.

[0046] Specifically, the self-locking part 3011 is also in the shape of a frustum, and is proportionally reduced in size to the limiting cavity 102. The outer wall of the self-locking part 3011 abuts against the inner wall of the limiting cavity 102. Moreover, since the self-locking part 3011 is elastic, when the self-locking part 3011 moves to the left, it can be squeezed and contracted by the inner wall of the limiting cavity 102, thereby clamping the sleeve part 3012 to prevent it from moving to the left.

[0047] More specifically, in order to cooperate with the locking of the self-locking part 3011 to lock the sleeve part 3012, the self-locking part 3011 is provided with a number of tapered blocks distributed at intervals. The tapered blocks are arranged obliquely inward from left to right. This way, the sleeve part 3012 will not be obstructed when sliding to the right, and it also provides a guiding function, so that the sleeve part 3012 can move to the right smoothly. When the sleeve part 3012 moves to the left, it will be obstructed by the tapered blocks. The tapered blocks will press against the sleeve part 3012, preventing the sleeve part 3012 from moving to the left smoothly. With the elastic tightening of the self-locking part 3011, the sleeve part 3012 and the copper wire inside the sleeve part 3012 can be locked to prevent loosening.

[0048] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0051] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A double-ended terminal block structure, characterized in that, include: A metal sleeve (1) has a cylindrical mounting cavity (101) formed in the middle of its interior. At both ends of the mounting cavity (101) are frustum-shaped limiting cavities (102), and the two limiting cavities (102) are seamlessly connected to the two ends of the mounting cavity (101). The drive mechanism (2) is disposed in the mounting cavity (101). The drive mechanism (2) includes a support rod (201) disposed along the length of the metal sleeve (1), abutment members (202) movably disposed at both ends of the support rod (201), a power assembly (203), and a first elastic member (204) disposed between the power assembly (203) and the abutment members (202). Two elastic wire fixing mechanisms (3) are respectively installed in the two limiting cavities (102). The elastic wire fixing mechanism (3) includes an elastic self-locking member (301) and a second elastic member (302). The elastic self-locking member (301) is used to connect and lock the wire body. The second elastic member (302) is disposed between the abutment member (202) and the elastic self-locking member (301). The power assembly (203) can press the first elastic member (204) towards the abutment member (202), thereby compressing the first elastic member (204) and driving the abutment member (202) to move towards the elastic self-locking member (301). The elastic self-locking member (301) moves in the limiting cavity (102) in the direction of the smaller radius under the drive of the second elastic member (302), thereby locking the line. The power assembly (203) includes a movable component (2032), a power component (2031), and a transmission component (2033). The power component (2031) is vertically mounted on the support rod (201) and can move up and down relative to the support rod (201) in a length direction perpendicular to the support rod (201). The transmission component (2033) is disposed on both sides of the power component (2031). The movable component (2032) is movably disposed on the support rod (201) and abuts against the end of the first elastic component (204) away from the abutment component (202). The power component (2031) moves downward by pushing the movable component (2032) relative to the first elastic component (204) through the transmission component (2033), thereby squeezing the first elastic component (204) and driving the abutment component (202) to move towards the second elastic component (302).

2. The double-ended terminal block structure according to claim 1, characterized in that, The movable component (2032) includes a plate (2034), a connecting rod (2035) extending vertically from the plate (2034) toward the power component (2031), and a cam (2036) disposed on the end of the connecting rod (2035) away from the plate (2034). The cam (2036) abuts against the transmission component (2033) for transmission.

3. The double-ended terminal block structure according to claim 2, characterized in that, The support rod (201) is provided with a guide rail, and the connecting rod (2035) is connected to a guide post (2037) that slides and guides the guide rail in the direction of the support rod (201).

4. The double-ended terminal block structure according to claim 1, characterized in that, The transmission component (2033) is a wedge-shaped adjusting block.

5. The double-ended terminal block structure according to claim 1, characterized in that, The power component (2031) is an adjusting screw. One end of the adjusting screw, which is away from the support rod (201), extends out of the metal sleeve (1) and has an adjusting hole on its surface.

6. The double-ended terminal block structure according to any one of claims 1-5, characterized in that, The outer periphery of the metal sleeve (1) is covered with an insulating shell (4).

7. The double-ended terminal block structure according to claim 6, characterized in that, A guide shell (5) is provided inside the mounting cavity (101). The guide shell (5) covers the driving mechanism (2). The guide shell (5) has a guide hole that cooperates with the abutment (202) for guidance.

8. The double-ended terminal block structure according to claim 7, characterized in that, It also includes a locking element (7) that passes through the insulating shell (4), the metal sleeve (1) and the guide shell (5) and locks in place.

9. The double-ended terminal block structure according to any one of claims 1-5, characterized in that, The metal sleeve (1) is provided with limiting shells (6) at both ends, which cooperate with the elastic self-locking member (301) for limiting.

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