A wall-penetrating terminal connection cover

Abstract

This utility model relates to a through-wall terminal connection cover, belonging to the field of electrical connection components. A through-wall terminal connection cover has a wire-passing terminal connected to one side of the cover, and a connection port on the other side. A partition is provided at the connection port. The connection port includes a first separation area and a second separation area; the partition has a pre-fracture structure, which connects the first and second separation areas to the partition, allowing for three usage states. This utility model, through the partitioned design of the connection port—the first and second separation areas combined with the partition and pre-fracture structure—achieves adjustability of the connection port, enabling the cover to flexibly switch between three states according to different requirements for the number and specifications of wires, solving the problems of fixed ports and poor adaptability in traditional terminal cover designs.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection components, specifically to a through-wall terminal connection cover. Background Technology

[0002] Through-wall terminal blocks utilize screw connection technology, with PA66 insulation (flame retardant rating: UL94, V-0), and connectors made of high-quality, highly conductive metal materials. H-type through-wall terminal blocks can be installed side-by-side on panels with thicknesses ranging from 1mm to 10mm, automatically compensating for panel thickness differences to form terminal blocks of any number of poles. Furthermore, isolation plates can be used to increase air gaps and creepage distances. Installation is extremely convenient, requiring no tools to securely mount the through-wall terminal blocks into the rectangular pre-drilled holes on the panel. H-type through-wall terminal blocks are widely used in applications requiring through-wall solutions: power supplies, filters, electrical control cabinets, and other electronic equipment. They offer excellent insulation performance and a high protection level, allowing users to directly connect external wires without unnecessary wiring steps. The WUK series terminal blocks use modified nylon (PA66) insulation and can connect to 4mm² wires in electrical connection products with a voltage of 800V and a current of 41A.

[0003] However, existing through-wall terminal connection covers have many shortcomings. For example, the size of the connection port is fixed and cannot be adjusted according to the actual number and specifications of wires; the connection between the cover and the terminal is not stable enough and is prone to loosening under vibration or external force; and the sealing performance is poor, making it difficult to effectively prevent external factors such as dust and moisture from corroding the terminals and lines. Therefore, there is an urgent need for a through-wall terminal connection cover that can solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a through-wall terminal connection cover to solve the problems of non-adjustable connection ports, unstable connection between the cover and the terminal, and poor sealing performance in the prior art.

[0005] The technical solution of this utility model is as follows:

[0006] A through-wall terminal connection cover has a through-wire terminal connected to one side of the cover, a connection port on one side of the cover, and a partition at the connection port. The connection port includes a first separation area and a second separation area. The partition has a pre-fracture structure, which enables the connection between the first and second separation areas and the partition. The cover includes three usage states:

[0007] Preparatory state: The pre-fractured structure has not been removed, and the partition is installed in the first separation zone and the second separation zone;

[0008] First phase: Remove part of the pre-fractured structure and install the partition in the first separation zone or the second separation zone;

[0009] Second phase: Remove all pre-fractured structures and use the largest connection port.

[0010] The three states offer versatility for various scenarios: **Prepared State (Pre-fractured structure not removed):** 1) The partition covers both the first and second separation zones, suitable for scenarios with few or no wires to be threaded, preventing dust and moisture intrusion and providing a sealing and protective function. 2) **First State (Partial Pre-fractured Structure Removed):** The partition remains in one separation zone, while the other is open, suitable for single or small-scale wire threading. This partitioned approach avoids reduced sealing due to excessively large ports. 3) **Second State (All Pre-fractured Structures Removed):** The connection ports are fully open, suitable for simultaneous threading of multiple wires or large-diameter cable access, meeting the connection needs of high-current and complex circuits.

[0011] This utility model achieves the adjustability of the connection port through the combination of the partition design (first separation area + second separation area) and the pre-fracture structure of the partition. This allows the cover to flexibly switch between three states according to different requirements of the number and specifications of wires, solving the problems of fixed ports and poor adaptability of traditional terminal cover, and improving the versatility and convenience of wiring scenarios. The pre-fracture structure (such as the interval connection section) allows the partition to be manually removed to switch states without tools, making the operation convenient. Moreover, the structure is not easily damaged during the removal process, ensuring reusability.

[0012] Preferably, the cover includes a first slot nested with the top of the wire terminal and a second and a third slot fixedly connected to both sides of the wire terminal, and a circular block extends circumferentially from the top of the wire terminal.

[0013] Preferably, the cover body has a first slot on the side opposite to the connection port, and the cover body has a second and a third slot on both sides of the first slot. The second slot has a second slot, and the third slot has a third slot. The wire terminal extends into the inside of the cover body and slides into the second and third slots, and is fixed by the top of the wire terminal nesting with the first slot.

[0014] Preferably, the cover has a square structure and is elastic.

[0015] Specifically, the first slot nests with the circular block on top of the terminal block, while the second and third slots slide to the sides of the terminal, forming a three-dimensional fixing structure. This prevents the cover from shaking or falling off during use, making it particularly suitable for wiring connections in vibrating environments. The cover adopts a square elastic structure, which fits tightly with the terminal through elastic deformation, further enhancing the fixing effect. It is also compatible with the installation of terminals of different sizes, improving adaptability. The sliding connection and nested slot design allow the cover to be quickly installed or removed, facilitating subsequent wiring maintenance and repair, and reducing operation time.

[0016] Preferably, the wire terminal has screw holes at the top and bottom.

[0017] Preferably, the pre-fracture structure comprises a plurality of connecting segments arranged at intervals.

[0018] Preferably, the thickness of the partition is 40-80% of that of the side cover of the connection port.

[0019] Preferably, the pre-fracture structure uses spaced connecting segments to maintain the overall strength of the partition in the preparatory state and avoid accidental breakage; during dismantling, only a certain force is needed to break it along the connecting segment, making the operation labor-saving; the thickness of the partition is designed to be 40-80% of that of the port side cover, which not only ensures the support of the partition when it is not removed, but also reduces the difficulty of dismantling, avoiding the difficulty of dismantling due to excessive thickness or the structural fragility due to excessive thinness.

[0020] Preferably, the partition includes a fan-shaped partition, with the outer arc-shaped edge of the fan-shaped partition corresponding to the inner side of the first separation zone, and the pre-fracture structure is provided in the middle.

[0021] Preferably, the partition includes a square partition, which is installed in the second separation zone via a pre-fracture structure.

[0022] To further optimize the partition design, the outer arc edge of the fan-shaped partition matches the inner side of the first separation zone, which can fit the circular wires for threading, reduce port gaps, and improve sealing. The square partition is adapted to the second separation zone and is suitable for rectangular or flat cables, enabling precise threading of wires of different shapes.

[0023] Preferably, the bottom edge of the fan-shaped partition is the same as the top edge of the square partition, and the bottom edge of the square partition and the bottom edge of the cover are at the same height.

[0024] In this invention, the bottom edges of the fan-shaped partition and the square partition are at the same height and flush with the bottom edge of the cover, so that the port structure is flat when switching between the two partitions, avoiding steps or protrusions, and facilitating cable management and the installation of external protective components (such as corrugated pipes).

[0025] The advantages of this utility model based on the above solution are as follows:

[0026] In this invention, a single cover can be adapted to various wiring scenarios, reducing the stock of covers of different specifications and lowering production and management costs. Through adjustable ports and a multi-slot fixing structure, wiring adaptation, sealing protection, and rapid installation are achieved simultaneously, simplifying the number of components and installation process of the terminal system. When the partition is not removed, it can prevent personnel from contacting live terminals. After removal, the port shape has a high degree of matching with the wire, reducing the risk of wire wear or short circuit, and complying with electrical safety specifications. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram from a first-view perspective of the present invention;

[0028] Figure 2 This is a two-dimensional structural diagram of the present invention from a second perspective;

[0029] Figure 3 This is a front view structural diagram of the cover body of this utility model;

[0030] Figure 4 This is a rear view structural diagram of the cover body of this utility model;

[0031] Figure 5 for Figure 4 A magnified view of the area circled in middle I;

[0032] Figure 6 This is a three-dimensional structural diagram of the present invention from a third-person perspective;

[0033] Figure 7 This is a front-view three-dimensional structural diagram of the present invention;

[0034] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure shown by the centerline AA;

[0035] In the diagram,

[0036] 100. Cover; 110. Connection port; 111. First separation zone; 112. Second separation zone; 120. Partition; 121. Pre-fracture structure; 122. Connecting section; 123. Fan-shaped partition; 124. Square partition; 140. Second locking piece; 141. Second locking slot; 150. Third locking piece; 151. Third locking slot; 200. Wiring terminal; 210. Circular block; 220. Screw hole; 220a. Top screw hole; 220b. Bottom screw hole. Detailed Implementation

[0037] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0038] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0039] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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.

[0040] Example 1:

[0041] like Figure 1-8 As shown, a through-wall terminal connection cover is provided. One side of the cover 100 is connected to a through-wire terminal 200, and a connection port 110 is provided on one side of the cover 100. A partition 120 is provided at the connection port 110. The connection port 110 includes a first separation area 111 and a second separation area 112. The partition 120 is provided with a pre-fracture structure 121, which connects the first separation area 111 and the second separation area 112 to the partition 120. The cover includes three usage states:

[0042] Preparatory state: The pre-fractured structure 121 has not been removed. The partition 120 is installed in the first separation zone 111 and the second separation zone 112. At this time, the partition 120 can effectively block external pollutants such as dust and water vapor from entering, and play a good protective role for the wiring terminal 200 and the line.

[0043] First state: Remove part of the pre-fractured structure 121, and install the partition 120 in the first separation zone 111 or the second separation zone 112. This is suitable for situations where the number of wires is small, and maintains a certain degree of sealing while ensuring the wire threading function.

[0044] Second state: Remove all pre-fractured structures 121 and use the largest connection port 110 to facilitate the threading of multiple conductors or large-diameter cables.

[0045] Furthermore, the cover 100 includes a first slot 130 that mates with the top of the wire terminal 200, and a second locking member 140 and a third locking member 150 located on both sides of the cover 100. The second locking member 140 is provided with a second slot 141, and the third locking member 150 is provided with a third slot 151. A circular block 210 extends circumferentially from the top of the wire terminal 200.

[0046] In one installation process, the wire terminal 200 is placed inside the cover 100. The second locking member 140 and the third locking member 150 are pressed inwards, applying an inward compressive force to the top of the wire terminal 200. In this state, since the circular block 210 is not yet fully nested and fixed in the first slot 130, the wire terminal 200 can be slightly rotated by external force, causing the circular block 210 to rotate within the second and third slots 141 and 151, adjusting the wire terminal 200 to a suitable angle. After the angle adjustment is complete, pressure is continued to be applied, causing the wire terminal 200 to slide towards the first slot 130 until the circular block 210 at the top of the wire terminal 200 is fully nested in the first slot 130, thus forming a stable three-way fixing structure. Figure 2 As shown. This structure allows the cover 100 to be securely mounted on the wire terminal 200, effectively preventing the cover 100 from shaking or falling off during use.

[0047] To further improve installation convenience and adaptability, the cover 100 has a square structure and is elastic. The elastic square structure allows the cover 100 to deform to a certain extent during installation, better fitting the wire terminal 200, while also being compatible with wire terminals 200 of different sizes, thus expanding the applicability of the cover 100.

[0048] In some embodiments, the top of the wire terminal 200 is provided with a screw hole 220. The screw hole 220 can be used with screws to further fix the cover 100 or other external components (such as wire sleeves, junction boxes), enhancing the stability of the overall structure. It is particularly suitable for outdoor equipment, industrial equipment and other scenarios where high fixing strength is required.

[0049] Specifically, the wire terminal 200 has screw holes 220 at its top and bottom. The screw holes 220 include two holes distributed vertically: a top screw hole 220a and a bottom screw hole 220b.

[0050] After the wire harness passes through the connection port 110, the conductor is stripped at the end and crimped onto the terminal block with the mounting hole. The terminal mounting hole then extends down through the connection port 110 and aligns with the top screw hole 220a. A bolt is then screwed into the screw hole 220a through the mounting hole to achieve rigid fixation between the end of the wire harness and the terminal block. This design allows the stress point at the end of the wire to shift to the screw hole connection after passing through the connection port 110, preventing the connection port 110 and the partition 120 from bearing excessive wire pulling force.

[0051] The bottom screw hole 220b is located at the bottom of the wire terminal 200, where a wire harness fixing clip can be installed. The wire harness that passes through the connection port 110 and extends is tightly held in the fixing clip, forming a complete wire harness management path of "port wire threading - middle fixing - end fastening".

[0052] The pre-fracture structure 121 includes a plurality of connecting segments 122 arranged at intervals, such as Figure 4 As shown. The spaced connecting segments 122 enable the partition 120 to maintain its overall strength in the ready state and prevent accidental breakage; when it is necessary to change the state of the connecting port 110, only a certain force needs to be applied and the partition 120 can break along the connecting segment 122. The operation is simple and labor-saving, and will not cause damage to other parts of the cover 100.

[0053] To balance the structural strength and ease of disassembly of the partition 120, the thickness of the partition 120 is 40-80% of the side cover 100 of the connection port 110. This thickness design ensures that the partition 120 has sufficient support when it is not removed, while reducing the force required for removal and improving the convenience of operation.

[0054] Specifically, the partition 120 is 60% of the thickness of the cover 100.

[0055] In a preferred embodiment of this utility model, the partition 120 includes a fan-shaped partition 123, the outer arc-shaped edge of which is correspondingly disposed with the inner side of the first separation zone 111, and the pre-fracture structure 121 is provided in the middle therebetween. The arc-shaped design of the fan-shaped partition 123 can better fit the circular wire, reduce the gap at the port, improve the sealing performance, and is suitable for the wiring scenario of circular wires.

[0056] The partition 120 also includes a square partition 124, which is installed in the second separation zone 112 via a pre-fracture structure 121. Figure 6 As shown. The square partition 124 can accommodate the wiring needs of rectangular or flat cables, further improving the versatility of the connection cover.

[0057] Furthermore, the bottom edge of the fan-shaped partition 123 is the same as the top edge of the square partition 124, and the bottom edge of the square partition 124 is at the same height as the bottom edge of the cover 100. This design ensures that when switching between the two partitions 120, the structure of the connection port 110 is flat, without any steps or protrusions, which facilitates subsequent cable management operations and the installation of external protective components (such as corrugated pipes).

[0058] The specific usage process includes:

[0059] (a) The partition 120 is installed in the first separation zone 111 and the second separation zone 112 of the connection port 110 through the pre-fracture structure 121. It is in a ready state and can effectively prevent dust, water vapor and other substances from entering, thus protecting the wiring terminal 200 and the line.

[0060] When it is necessary to insert a single or a small number of wires, locate the connecting segment 122 in the pre-broken structure 121 located between the first separation zone 111 and the second separation zone 112, apply appropriate external force to remove it, so that the partition 120 remains in one of the separation zones (such as the first separation zone 111), and the other separation zone (the second separation zone 112) is open for wire insertion.

[0061] When multiple conductors or large-diameter cables need to be threaded through, all connecting sections 122 of the pre-broken structure 121 should be removed to fully open the connecting port 110, creating maximum threading space for easy threading. After threading is completed, if enhanced sealing is required, a cable sheath or other sealing components can be installed as needed.

[0062] (ii) After the wire harness passes through the connection port 110, the conductor is stripped at the end and pressed onto the terminal block with the mounting hole. The terminal mounting hole is then extended through the connection port 110 and aligned with the top screw hole 220a. A bolt is screwed into the screw hole 220a through the mounting hole to achieve rigid fixation between the end of the wire harness and the terminal block.

[0063] The bottom screw hole 220b is located at the bottom of the wire terminal 200, where a wire harness fixing clip can be installed to secure the wire harness that passes through the connection port 110 and extends into the fixing clip.

[0064] (iii) Press the second locking piece 140 and the third locking piece 150 upwards to push the wire terminal 200 into the second or third locking piece inside the cover 100, so that the two sides of the wire terminal 200 are aligned with the second locking piece 141 and the third locking piece 151 respectively; so that the second locking piece 140 and the third locking piece 150 apply an inward pressing force to the top of the wire terminal 200. When the wire terminal 200 is not completely fixed, slightly rotate the wire terminal 200 to adjust its angle.

[0065] After the angle adjustment is completed, continue to apply the pushing force to make the wire terminal 200 slide towards the center of the first slot 130 until the circular block 210 on the top of the wire terminal 200 is completely nested into the first slot 130, thus completing the installation and fixing of the cover 100 and the wire terminal 200.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A through-wall terminal connection cover, wherein a wire-passing terminal is connected to one side of the cover, a connection port is provided on one side of the cover, and a partition is provided at the connection port, characterized in that... The connection port includes a first separation area and a second separation area; the partition is provided with a pre-fracture structure, which enables the connection between the first and second separation areas and the partition, including three usage states: Preparatory state: The pre-fractured structure has not been removed, and the partition is installed in the first separation zone and the second separation zone; First phase: Remove part of the pre-fractured structure and install the partition in the first separation zone or the second separation zone; Second phase: Remove all pre-fractured structures and use the largest connection port.

2. The through-wall terminal connection cover according to claim 1, characterized in that, The cover includes a first slot nested with the top of the wire terminal and a second and a third slot fixedly connected to both sides of the wire terminal. A circular block extends circumferentially from the top of the wire terminal.

3. A through-wall terminal connection cover according to claim 2, characterized in that, The cover has a first slot on the side opposite to the connection port. The cover has a second and a third slot on both sides of the first slot. The second slot has a second slot and the third slot has a third slot. The wire terminal extends into the inside of the cover and slides into the second and third slots. The top of the wire terminal is nested and fixed with the first slot.

4. A through-wall terminal connection cover according to claim 3, characterized in that, The cover has a square structure and is elastic.

5. A through-wall terminal connection cover according to claim 1, characterized in that, The wire terminals have screw holes at the top and bottom.

6. A through-wall terminal connection cover according to claim 1, characterized in that, The pre-fractured structure includes several connecting segments arranged at intervals.

7. A through-wall terminal connection cover according to claim 6, characterized in that, The thickness of the partition is 40-80% of that of the side cover of the connection port.

8. A through-wall terminal connection cover according to claim 1, characterized in that, The partition includes a fan-shaped partition, with the outer arc-shaped edge of the fan-shaped partition corresponding to the inner side of the first separation zone, and the pre-fracture structure is provided in the middle.

9. A through-wall terminal connection cover according to claim 8, characterized in that, The partition includes a square partition, which is installed in the second separation zone via a pre-fracture structure.

10. A through-wall terminal connection cover according to claim 8, characterized in that, The bottom edge of the fan-shaped partition is the same as the top edge of the square partition, and the bottom edge of the square partition is the same height as the bottom edge of the cover.

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