A self-locking fully hollow cable tray

Abstract

This utility model discloses a self-locking, fully hollow cable tray, aiming to solve the technical problem that the cover plate and bottom groove of existing cable trays are often connected by bolts, which is extremely inconvenient for disassembly and assembly in scenarios where cables need to be frequently moved or maintained. The new tray includes a snap-fit ​​cover plate and bottom groove; the bottom groove includes a U-shaped body with a base plate and two side plates extending vertically upwards from both sides of the base plate; the two side plates can elastically deform inwards; the base plate and side plates are provided with heat dissipation holes; the front and rear ends of the side plates are respectively provided with groove bridging holes; the side plates are provided with a first snap-fit ​​part that snaps onto the edge of the cover plate; the first snap-fit ​​part includes a first snap groove and a cover plate support surface; the cover plate includes a cover body and a second snap-fit ​​part extending vertically downwards from both sides of the cover body; the second snap-fit ​​part includes a first protrusion and a limiting part; during connection, the first protrusion overcomes the elastic force of the side plate during elastic reset and snaps into the first snap groove; the limiting part limits the cover plate support surface to abut against the bottom of the cover plate.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, and in particular to a self-locking fully hollow cable tray. Background Technology

[0002] Cable trays are structured cabling systems used to support, protect, and manage power cables, control cables, and communication optical cables.

[0003] Existing trough-type cable trays, due to their fully enclosed structure, are widely used in locations with high protection and shielding requirements, such as fire protection, chemical and food processing, environments with electromagnetic interference, or those requiring cleanliness. However, their fully enclosed structure results in poor heat dissipation, which is not conducive to laying large numbers of cables. Ladder-type cable trays, composed of two parallel side beams and a central ladder section, offer excellent ventilation and heat dissipation, but their protection is poor, with more cables exposed, making them susceptible to intrusion by rodents and other small animals, posing safety hazards. Furthermore, the covers and bottom troughs of existing cable trays are often bolted together, making disassembly and assembly extremely inconvenient for scenarios requiring frequent cable changes or maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking, fully hollowed-out cable tray to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-locking, fully hollow cable tray includes a cover plate and a bottom groove, which can be quickly separated and snapped together.

[0007] The bottom groove includes an integrally formed U-shaped body, which has a horizontally arranged bottom plate and two side plates extending vertically upward from both sides of the bottom plate; the two side plates can elastically deform toward the inside of the U-shaped body.

[0008] The base plate is provided with at least three rows of first heat dissipation holes parallel to each other along its length.

[0009] The side plate is provided with at least one row of second heat dissipation holes parallel to its length; the front and rear ends of the side plate are respectively provided with one row of groove bridging holes; the top of the side plate is provided with a first locking part for locking the edge of the cover plate when the side plate is elastically reset; the first locking part includes a first recessed locking groove provided at the bottom and a cover plate support surface provided at the top.

[0010] The cover plate includes a horizontally arranged cover body and a second snap-fit ​​portion extending vertically downward from both sides of the cover body; the second snap-fit ​​portion matches the first snap-fit ​​portion, and the second snap-fit ​​portion includes a first protrusion portion at the lower part that matches the first slot and a limiting portion that matches the cover plate support surface; when connected, the first protrusion portion overcomes the elastic force when the side plate is elastically reset and snaps into the first slot; the limiting portion limits the cover plate support surface to abut against the bottom of the cover plate.

[0011] Preferably, the first slot includes a concave C-shaped groove, and correspondingly, the first protrusion includes a C-shaped protrusion that abuts against the outside of the C-shaped groove. The cover plate and the bottom groove are stably connected by the matching C-shaped groove and the C-shaped protrusion.

[0012] Preferably, the cover plate support surface includes a first arc-shaped plate integrally formed and connected with the first slot, and correspondingly, the limiting part is provided with a second arc-shaped plate abutting against the outer wall of the first arc-shaped plate; the bottom of the second snap-fit ​​part is provided with a guide arc-shaped plate rolled outward; during connection, under the action of external force, the inner wall of the guide arc-shaped plate moves downward along the outer wall of the first arc-shaped plate until the outer wall of the first arc-shaped plate abuts against the inner wall of the second arc-shaped plate.

[0013] Preferably, the side plate has a thickness of 1.5-2mm, which provides good load-bearing capacity and elastic deformation.

[0014] Preferably, both the first and second heat dissipation holes are elongated holes, which have better heat dissipation performance, reduce weight without compromising structural strength, and facilitate installation.

[0015] During installation, under external force, the inner wall of the guide arc plate of the cover plate moves downward along the outer wall of the first arc plate of the bottom groove. Then, the second locking part of the cover plate overcomes the restoring elastic force of the side plates on both sides of the bottom groove, causing the C-shaped protrusion of the first protrusion of the cover plate to lock into the outer side of the C-shaped groove of the first locking groove of the bottom groove. At this time, the outer wall of the first arc plate abuts against the lower part of the inner wall of the second arc plate, and the cover plate support surface of the bottom groove forms a stable support for the cover plate. Disassembly is performed in reverse. The cover plate and bottom groove are quick and easy to assemble and disassemble, and the connection is stable and reliable.

[0016] Compared with the prior art, the self-locking fully hollow cable tray of this application has the following advantages:

[0017] 1. Excellent heat dissipation performance: By setting no fewer than three rows of heat dissipation holes along the length of the base plate and no fewer than one row of heat dissipation holes on the side plates, combined with the overall structure formed by the snap-fit ​​connection between the cover plate and the bottom groove, the entire cable tray achieves a "fully hollow" design. This dense hollow structure greatly increases the airflow inside and outside the cable tray, effectively solving the problem of poor heat dissipation caused by the fully enclosed structure of traditional trough-type cable trays, significantly reducing the temperature rise of cables during operation, and is particularly suitable for scenarios with high current and multiple cable laying, ensuring the safe operation and service life of cables.

[0018] 2. Excellent protection and safety: The cover plate and bottom groove form a semi-enclosed cavity through a snap-fit ​​structure. Compared with ladder-type cable trays, this structure can effectively prevent small animals from directly entering the cable tray and contacting the cables, reducing the potential risks of cable chewing and short circuits, and solving the safety hazards of poor protection in ladder-type cable trays. At the same time, the enclosed structure also provides a certain degree of electromagnetic shielding.

[0019] 3. Quick and convenient installation and disassembly: The cover plate and bottom groove adopt a unique self-locking snap-fit ​​structure (the first snap-fit ​​part and the second snap-fit ​​part cooperate). Utilizing the elastic deformation characteristics of the side plate (1.5-2mm thick, with good elasticity), during installation, only external force needs to be applied to make the guide arc plate of the cover plate slide down along the first arc plate of the bottom groove until the first protrusion (such as a C-shaped protrusion) snaps into the first slot (such as a C-shaped groove) and is limited. At the same time, the limiting part (such as the second arc plate) abuts against the cover plate support surface (such as the first arc plate), thus completing a stable and reliable connection. During disassembly, only the reverse separation force needs to be applied to overcome the snap-fit ​​force. The entire process requires no tools or bolts for tightening, making the operation extremely simple and efficient. It significantly solves the problem of cumbersome and time-consuming disassembly and assembly of existing bolt-connected cable trays, and is particularly suitable for occasions that require frequent maintenance, addition, removal, or replacement of cables.

[0020] 4. Stable and Reliable Connection: The ingenious snap-fit ​​structure design (such as the fit between the C-shaped groove and the C-shaped protrusion, and the abutment between the first and second arc-shaped plates) achieves a self-locking effect under the elastic restoring force of the side plates, ensuring a firm connection between the cover plate and the bottom groove, preventing loosening. The abutment between the cover plate support surface (such as the first arc-shaped plate) and the limiting part (such as the second arc-shaped plate) further distributes the load, enhancing the overall structural stability and load-bearing capacity.

[0021] 5. Smooth guidance and good installation experience: The design of the guide arc plate allows the cover plate to be smoothly aligned and slide down along the first arc plate in the initial stage of installation, effectively avoiding misalignment and jamming during the installation process, and greatly improving installation efficiency and operation experience.

[0022] 6. Balancing lightweight design and structural strength: A well-designed ventilation hole (preferably elongated holes) significantly reduces the cable tray's weight while maintaining overall structural strength and rigidity (1.5-2mm side plate thickness provides good load-bearing capacity). This not only facilitates transportation and on-site installation but also reduces the load requirements on the supporting structure.

[0023] 7. Low maintenance cost: The quick disassembly and assembly feature greatly simplifies daily inspections, troubleshooting, and cable maintenance, significantly reducing the time and labor costs required for maintenance.

[0024] In summary, this utility model successfully integrates the advantages of protection and heat dissipation, and completely solves the core pain point of inconvenient disassembly and assembly of traditional cable trays through an innovative self-locking snap-fit ​​structure. It provides a new type of cable tray solution that is highly efficient in heat dissipation, reliable in protection, extremely convenient in installation and disassembly, and structurally stable and lightweight. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0026] Figure 2 This is an exploded view of the structure of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the bottom groove structure in an embodiment of this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0029] Figure 5 This is a schematic diagram of the cover plate in an embodiment of the present utility model;

[0030] Figure 6 for Figure 5 A magnified view of region B in the middle.

[0031] Reference numerals: 100, cover plate; 110, cover body; 120, second snap-fit ​​part; 121, first protrusion; 122, limiting part; 123, guide arc plate; 200, bottom groove; 210, bottom plate; 211, first heat dissipation hole; 220, side plate; 221, second heat dissipation hole; 222, groove bridging hole; 230, first snap-fit ​​part; 231, first slot; 232, cover plate support surface. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Example 1:

[0034] like Figure 1-6 As shown, this embodiment provides a self-locking, fully hollow cable tray. The cable tray mainly includes a cover plate 100 and a bottom groove 200, which are connected and separated quickly via a specific snap-fit ​​structure.

[0035] Bottom groove 200:

[0036] The bottom groove 200 is a one-piece molded U-shaped body, which is usually formed by stamping, rolling or extrusion of metal sheet (such as cold-rolled steel sheet, aluminum alloy sheet, etc.). The U-shaped body has a horizontally set bottom plate 210 and two side plates 220 extending vertically upward from both sides of the bottom plate 210.

[0037] The base plate 210 has three or more rows of first heat dissipation holes 211 arranged parallel to its length. In this embodiment, the first heat dissipation holes 211 are preferably elongated holes, and their major axis can be parallel or perpendicular to the length direction of the cable tray (preferably parallel) to facilitate heat dissipation and reduce weight.

[0038] The two side plates 220 have a certain degree of elasticity and can elastically deform toward the inside of the U-shaped body (i.e., the inside of the cable tray). The thickness of the side plates 220 is designed to be between 1.5mm and 2mm (e.g., 1.5mm, 1.8mm, or 2.0mm). This thickness range ensures that the side plates 220 have sufficient structural strength and load-bearing capacity to support the cover plate 100 and the weight of the cables, while also giving them the necessary elastic deformation capacity.

[0039] On each side plate 220, one or more rows of second heat dissipation holes 221 are arranged parallel to its length direction, preferably oblong holes, to further enhance the heat dissipation effect.

[0040] At the front and rear ends (i.e., both ends of the cable tray) along the length of each side plate 220, there is a row of groove bridging holes 222. These groove bridging holes 222 are used to connect and fix the ends of the bottom grooves 200 of adjacent cable tray units by means of connectors (such as bolts, connecting pieces, etc.) when installing the cable tray system.

[0041] Each side panel 220 has a first snap-fit ​​portion 230 at its top specifically for snapping onto the cover plate 100. The first snap-fit ​​portion 230 includes:

[0042] The lower first slot 231 has a concave structure. In this preferred embodiment, the first slot 231 is specifically a concave C-shaped groove.

[0043] The upper cover plate support surface 232 is located above the first slot 231 and is used to support the cover plate 100 after it is engaged. In this preferred embodiment, the cover plate support surface 232 is specifically a first arc-shaped plate integrally formed and connected with the first slot 231 (C-shaped slot).

[0044] Cover plate 100:

[0045] The cover plate 100 is also typically made of sheet metal and includes a horizontally positioned cover body 110 and second snap-fit ​​portions 120 extending vertically downward from both sides of the cover body 110.

[0046] The second snap-fit ​​portion 120 mates with the first snap-fit ​​portion 230 on the side plate 220 of the bottom groove 200 to achieve snap-fit. The second snap-fit ​​portion 120 includes:

[0047] The lower first protrusion 121 matches the shape of the first slot 231 of the bottom groove 200. In this preferred embodiment, the first protrusion 121 is specifically a C-shaped protrusion that matches the C-shaped groove.

[0048] The upper limiting part 122 matches the cover plate support surface 232 of the bottom groove 200. In this preferred embodiment, the limiting part 122 is specifically provided with a second arc-shaped plate that abuts against the outer wall of the first arc-shaped plate (cover plate support surface 232).

[0049] Guide structure: In this preferred embodiment, the bottom (i.e. the lowest end) of the second snap-fit ​​portion 120 is provided with a guide arc plate 123 that rolls outward (away from the direction of the center of the cable tray).

[0050] Installation and connection process:

[0051] Place the cover plate 100 above the bottom groove 200, so that the second snap-fit ​​portions 120 on both sides of the cover plate 100 are roughly aligned with the first snap-fit ​​portions 230 on the top of the side plates 220 on both sides of the bottom groove 200.

[0052] A downward external force is applied to the cover plate 100. Under the action of this external force:

[0053] The inner wall of the guide arc plate 123 at the bottom of the second snap-fit ​​part 120 of the cover plate 100 first contacts and slides downward along the outer wall of the first arc plate (cover plate support surface 232) at the top of the side plate 220 of the bottom groove 200. The design of the guide arc plate 123 makes the initial alignment and insertion process smooth and avoids jamming.

[0054] As the cover plate 100 continues to press down, the second snap-fit ​​portion 120 of the cover plate 100 (especially its first protrusion 121) begins to press outward against the side plate 220 of the bottom groove 200, forcing the two side plates 220 to overcome the elastic restoring force of their own materials and undergo elastic deformation towards the inside of the U-shaped body (i.e., the top of the side plate 220 bends inward).

[0055] When the cover plate 100 is pressed down to a specific position:

[0056] The first protrusion 121 (C-shaped protrusion) at the lower part of the cover plate 100 moves exactly to the outer side of the first slot 231 (C-shaped slot) at the lower part of the bottom groove 200.

[0057] At this time, due to the elastic restoring force of the side plate 220, the side plate 220 tends to return to its original position, thereby tightly engaging and limiting the first protrusion 121 (C-shaped protrusion) in the first slot 231 (C-shaped slot) that matches its shape, forming a stable limiting engagement.

[0058] Meanwhile, the inner wall of the limiting portion 122 (second arc-shaped plate) at the upper part of the cover plate 100 also abuts against the lower part of the outer wall of the cover plate support surface 232 (first arc-shaped plate) at the upper part of the bottom groove 200 (or forms a tight fit). This allows the cover plate support surface 232 (first arc-shaped plate) to effectively support the limiting portion 122 (second arc-shaped plate) of the cover plate 100, providing stable support for the cover plate 100 and sharing the load.

[0059] At this point, the external force can be removed. The cover plate 100 is firmly and stably connected to the bottom groove 200 through the locking and limiting action of the first protrusion 121 and the first slot 231, and the abutting support of the limiting part 122 and the cover plate support surface 232, thus completing the self-locking locking action. The disassembly process is the reverse operation.

[0060] Results:

[0061] As can be seen from the above specific structure and installation / disassembly process, this embodiment features a self-locking, fully hollow cable tray:

[0062] The multiple rows of first heat dissipation holes 211 on the base plate 210 and the second heat dissipation holes 221 on the side plate 220 together form an efficient heat dissipation channel (fully hollowed-out design).

[0063] The cover plate 100 and the bottom groove 200 are snapped together to form a relatively enclosed space, providing better protection than ladder-type cable trays.

[0064] The unique flexible snap-fit ​​structure (side plate 220 deformation, C-groove / protrusion fit, arc support / guide) enables quick, tool-free installation and disassembly of the cover plate 100 and the bottom groove 200, making the operation extremely simple.

[0065] The snap-fit ​​structure (C-groove / protrusion limiting) and the support structure (arc-shaped surface abutment) work together to ensure the firmness and stability of the connection.

[0066] The design of the guide arc plate 123 significantly improves the smoothness of installation and user experience.

[0067] The elongated ventilation holes and optimized side plate thickness (1.5-2mm) effectively reduce the weight of the cable tray while ensuring strength and rigidity.

[0068] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A self-locking, fully hollow cable tray, characterized in that: Includes a cover plate and a bottom groove, which can be detachably snapped together; The bottom groove includes an integrally formed U-shaped body, which has a horizontally arranged bottom plate and two side plates extending vertically upward from both sides of the bottom plate; the two side plates can elastically deform toward the inside of the U-shaped body. The base plate is provided with at least three rows of first heat dissipation holes parallel to each other along its length. The side plate is provided with at least one row of second heat dissipation holes parallel to its length; the front and rear ends of the side plate are respectively provided with one row of groove bridging holes; the top of the side plate is provided with a first locking part for locking the edge of the cover plate when the side plate is elastically reset; the first locking part includes a first recessed locking groove provided at the bottom and a cover plate support surface provided at the top. The cover plate includes a horizontally arranged cover body and a second snap-fit ​​portion extending vertically downward from both sides of the cover body; the second snap-fit ​​portion matches the first snap-fit ​​portion, and the second snap-fit ​​portion includes a first protrusion portion at the lower part that matches the first slot and a limiting portion that matches the cover plate support surface; when connected, the first protrusion portion overcomes the elastic force when the side plate is elastically reset and snaps into the first slot; the limiting portion limits the cover plate support surface to abut against the bottom of the cover plate.

2. The self-locking fully hollow cable tray according to claim 1, characterized in that: The first slot includes a concave C-shaped groove, and correspondingly, the first protrusion includes a C-shaped protrusion that abuts against the outside of the C-shaped groove.

3. A self-locking, fully hollowed-out cable tray according to claim 2, characterized in that: The cover plate support surface includes a first arc-shaped plate integrally formed and connected with the first slot. Correspondingly, the limiting part is provided with a second arc-shaped plate abutting against the outer wall of the first arc-shaped plate. The bottom of the second snap-fit ​​part is provided with a guide arc-shaped plate rolled outward. When connected, under the action of external force, the inner wall of the guide arc-shaped plate moves downward along the outer wall of the first arc-shaped plate until the outer wall of the first arc-shaped plate abuts against the inner wall of the second arc-shaped plate.

4. A self-locking, fully hollowed-out cable tray according to claim 1, characterized in that: The thickness of the side plate is 1.5-2mm.

5. A self-locking, fully hollowed-out cable tray according to claim 1, characterized in that: Both the first and second heat dissipation holes are elongated holes.

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