Adjustable wire box

Abstract

The application discloses a reinforcing bar passing and adjustable wire box, which comprises a box body, at least one outer side wall of the box body is concave with an adjusting cavity, a reinforcing bar passing seat is movably arranged in the adjusting cavity, and a reinforcing bar passing hole for reinforcing bars to pass through is formed in the reinforcing bar passing seat; a multi-stage adjusting mechanism is arranged between the adjusting cavity and the reinforcing bar passing seat, and the multi-stage adjusting mechanism comprises a coarse adjusting assembly and a fine adjusting assembly; the coarse adjusting assembly is configured to enable the reinforcing bar passing seat to be switched between multiple discrete gear positions relative to the box body; and the fine adjusting assembly is configured to continuously finely adjust the protruding distance of the reinforcing bar passing seat relative to the box body at any gear position locked by the coarse adjusting assembly. The reinforcing bar passing and adjustable wire box has a reasonable structure, and through the cooperation of coarse adjustment and fine adjustment, wide-range fast positioning and high-precision fine adjustment are realized; and reliable locking and linkage unlocking mechanisms are provided, so that the wire box is convenient to operate and resistant to vibration and loosening.

Description

Technical Field

[0001] This invention belongs to the technical field of ribbed junction boxes, and relates to a ribbed and adjustable junction box. Background Technology

[0002] The rapid development of the construction industry has placed higher demands on the construction efficiency and quality of pre-embedded electromechanical components. During the construction of walls or structural columns, the accuracy of the pre-embedded junction boxes directly affects the overall effect of subsequent equipment installation and decoration. However, a common problem in actual projects is that after demolding, the junction boxes pre-embedded in the structural walls and columns may be recessed into the wall surface or protrude excessively, requiring the later addition of additional boxes, repairs, or even rework. This not only wastes manpower and materials but also significantly prolongs the construction cycle.

[0003] The main reason for the above problems is that the distance between the through-hole and the front panel of the conventional through-hole junction box is fixed. However, the diameter of the wall and column reinforcement bars on the construction site varies, and the actual thickness of the concrete cover often differs from the design value due to factors such as reinforcement binding errors and formwork installation deviations. After the junction box is fixed to the reinforcement bars through the through-hole by binding or spot welding, the position of its panel is determined by the positioning of the reinforcement bars and cannot be adjusted according to the actual concrete cover thickness before formwork closure or pouring. This ultimately results in a gap or interference between the junction box and the inner wall of the formwork, which naturally manifests as a depression or bulge after demolding.

[0004] To address the aforementioned issues, several improvement solutions have been attempted. For example, one solution employs a sliding lug structure on the outside of the junction box, allowing the relative distance between the junction box and the reinforcing steel to be changed by adjusting the position of the lug on the screw. However, such solutions typically only achieve discrete, step-by-step adjustments with limited precision and lack reliable locking and anti-loosening mechanisms, making them susceptible to displacement during concrete pouring due to vibration. Furthermore, most existing solutions assume that the adjustment distances on both sides of the junction box are the same, making it difficult to adapt to actual working conditions where the reinforcing steel mesh is eccentric or uneven, and also failing to provide convenient horizontal calibration methods during the pre-embedding process.

[0005] Therefore, providing a ribbed cable box that can achieve a wide range of gear switching, continuous fine adjustment, and reliable locking and anti-deflection functions has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to at least partially solve some of the technical problems existing in the prior art, and to provide a wire box that can be threaded and adjusted. Its structure is reasonable, and through the coordination of coarse and fine adjustment, it can achieve a wide range of rapid positioning and high-precision micro-adjustment. It is equipped with a reliable locking and linkage unlocking mechanism, which is convenient to operate and anti-vibration and anti-loosening. The guide is anti-deflection and the two sides can be adjusted independently to adapt to complex working conditions and effectively ensure the molding quality of the wire box.

[0007] To solve the above-mentioned technical problems, the present invention provides a wire box that can be threaded and is adjustable, which includes a box body, an adjustment cavity is recessed on at least one outer side wall of the box body, a threading seat is movably disposed in the adjustment cavity, and a threading hole body for threading steel bars to pass through is formed on the threading seat. A multi-stage adjustment mechanism is provided between the adjustment cavity and the through-rib seat, the multi-stage adjustment mechanism including: The coarse adjustment component is configured to enable the rib-piercing seat to switch between multiple discrete gear positions relative to the housing; The fine-tuning component is configured to continuously fine-tune the extension distance of the rib-piercing seat relative to the housing at any of the gear positions locked by the coarse-tuning component.

[0008] In some embodiments, the coarse adjustment assembly includes a toothed plate arranged on the inner wall of the adjustment cavity along the moving direction of the rib-piercing seat, and a retaining plate slidably disposed on the rib-piercing seat and capable of selectively engaging or disengaging with the toothed plate; The fine-tuning assembly includes a lead screw rotatably mounted on the threaded seat, and a movable plate threaded onto the lead screw and connected to the clamping plate; When the lead screw rotates in the first direction, it drives the moving plate to separate the clamping plate from the toothed plate, allowing the rib-passing seat to switch gears. When the lead screw rotates in the second direction, it drives the moving plate to engage and lock the clamping plate with the toothed plate. As the lead screw continues to rotate, it drives the rib-passing seat to make continuous fine adjustments relative to the locked clamping plate and the housing.

[0009] In some embodiments, at least one guide post is fixedly provided on the through-rib seat, and a guide hole is provided on the movable plate to slide and cooperate with the guide post, so as to guide the clamping plate to translate in the direction of meshing or disengaging with the toothed plate. Furthermore, the card plate has at least one clearance notch on the side facing the toothed plate, the clearance notch being used to accommodate unengaged teeth on the toothed plate when the card plate and the toothed plate are partially engaged.

[0010] In some embodiments, the threadable and adjustable wire box further includes a rotational anti-loosening mechanism, the rotational anti-loosening mechanism comprising: Multiple locking holes are circumferentially opened on the rotating cap at the outer end of the lead screw; A locking rod that is slidably mounted on the through-rib seat; An elastic element, the elastic force of which drives the end of the locking rod to be inserted into one of the locking holes; The locking lever is configured to disengage from the locking hole only when subjected to external pressing force, overcoming the elastic force of the elastic element, so as to allow the lead screw to rotate.

[0011] In some embodiments, the rotary anti-loosening mechanism further includes a linkage release component for synchronously driving the plurality of locking rods; The linkage release assembly includes a rotating rod rotatably connected to the locking rod, and a pressing plate rotatably connected to the free ends of multiple rotating rods simultaneously; When the pressing plate is pressed towards the inside of the through-rib seat, the rotating rod swings and drives the locking rod to overcome the elastic force of the elastic element and exit the locking hole axially.

[0012] In some embodiments, the upper sidewall of the box body is provided with at least one dovetail-shaped groove extending along its length, and a self-tapping screw receiving block is slidably disposed in the dovetail-shaped groove. The self-tapping screw receiving block is provided with screw holes for self-tapping screws to lock and fix the outer cover plate or connector after adjustment.

[0013] In some embodiments, the ribbed and adjustable junction box further includes a construction aid positioning component detachably mounted on the box body; The construction auxiliary positioning component includes: At least two detachable positioning rods are provided on the upper surface of the housing; A horizontal reference plate slidably sleeved on all of the aforementioned positioning rods; and A level that is fixedly installed on the horizontal reference plate; The upper surface of the horizontal reference plate is set to be parallel to the theoretical installation wall surface of the box, so as to provide an instant horizontal reference during pre-embedding.

[0014] In some embodiments, the lead screw is mounted on the guide rail seat via a bearing. The inner ring of the bearing is fixedly connected to the neck of the lead screw, and the outer ring of the bearing is fixedly connected to the guide rail seat, in order to withstand the axial load generated during the continuous fine adjustment and reduce rotational friction.

[0015] In some embodiments, the reinforcing bar seat includes two independent seats symmetrically arranged on opposite sides of the box body; each independent seat body is equipped with an independent multi-stage adjustment mechanism, so that the adjustment distance of the box body relative to the two sides of the reinforcing bar cage can be independently controlled.

[0016] In some embodiments, a guide rail and a guide groove are provided between the inner wall of the adjustment cavity and the outer wall of the rib-piercing seat. The cross-section of the guide rail is trapezoidal or T-shaped to constrain the rib-piercing seat to move linearly only in a direction perpendicular to the side wall of the box, preventing it from deflecting or tilting during the adjustment process.

[0017] Compared with the prior art, this application has the following beneficial effects: a. Achieving coordinated adjustment of large-area rapid positioning and high-precision fine-tuning By setting up a coarse adjustment component consisting of a toothed plate and a clamping plate, and a fine adjustment component consisting of a lead screw and a moving plate, the coarse adjustment component first allows the rebar holder to quickly switch between multiple discrete positions, initially adapting to large variations in rebar diameter and protective layer thickness. Then, the fine adjustment component performs continuous stepless fine adjustment after locking the position, precisely compensating for remaining deviations. The synergistic effect of both components avoids the limitations of single adjustment methods in terms of limited range or insufficient precision, and significantly improves the fit between the junction box and the inner wall of the formwork, fundamentally eliminating quality problems such as the junction box being recessed or protruding after demolding.

[0018] b. Enhance the reliability of the locking mechanism and ease of operation after adjustment. By incorporating a rotating anti-loosening mechanism and its linked release assembly, the locking rod is automatically inserted into the locking hole on the screw rotating cap using an elastic element. This effectively prevents the screw from accidentally rotating during construction due to vibration or external force, thus avoiding changes in the adjustment distance. Simultaneously, the linked design of the pressing plate and rotating rod allows for the simultaneous release of multiple locking rods with one hand, enabling rapid unlocking. This structure significantly simplifies the adjustment and locking procedures while ensuring positional stability during the pouring process, thereby improving construction efficiency.

[0019] c. Improve the stability of the regulation process and its adaptability to complex operating conditions. By setting trapezoidal or T-shaped guide rails and guide grooves between the box body and the reinforcing bar seat, the reinforcing bar seat is constrained to move only in a straight line perpendicular to the side wall of the box body, effectively preventing it from deflecting or tilting during adjustment or under stress, and ensuring that the panel is ultimately parallel to the wall surface. In addition, the reinforcing bar seats on both sides of the box body are each equipped with an independent multi-level adjustment mechanism, which can independently control the extension distance on both sides, flexibly adapting to actual working conditions such as eccentricity of the reinforcing mesh cage and uneven thickness of the protective layer, further ensuring the overall forming quality of the row of junction boxes. Attached Figure Description

[0020] The advantages of the present invention will become clearer and more readily understood through the following detailed description in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein: Figure 1 This is a schematic diagram of the structure of an adjustable wire box with threaded reinforcement proposed in this invention; Figure 2 This is a partial rear view of a ribbed and adjustable cable box proposed in this invention. Figure 3 This is a schematic diagram of the connection between the box body, the insertion rod, the level plate, and the level instrument in a ribbed and adjustable cable box proposed in this invention. Figure 4 This is a side view of the connection between the card plate and the notch in an adjustable wire box with threaded reinforcement, as proposed in this invention. Detailed Implementation

[0021] Figures 1 to 4 This is a schematic diagram of a wire box that can be threaded and adjusted according to the present application. The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0022] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0023] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0024] Please see Figures 1 to 4 This invention provides an adjustable junction box capable of housing reinforcing bars, comprising a box body 1. The box body 1 is generally rectangular, with an internal cavity for accommodating wire connectors. Its front side is an open side (not shown in the figure) for later installation of a panel or socket. Adjustable cavities 2 are respectively formed protruding outwards on the left and right walls (i.e., two opposite side walls perpendicular to the direction of reinforcing bar installation) of the box body 1. For ease of description, this embodiment uses... Figure 1 Based on the indicated direction, the structures on the left and right sides are symmetrical and identical. Therefore, the following explanation will mainly focus on one side as an example, while the other side can be understood by reference.

[0025] Unlike existing technologies that only provide fixed reinforcing bar holes or a single adjustment method on the box body, this invention decouples the "fixed connection function between the wire box and the reinforcing bar" and the "fine position adjustment function of the wire box panel relative to the reinforcing bar" structurally and functionally by independently setting a reinforcing bar seat 3 with an adjustment cavity 2 on the outside of the box body 1. The adjustment cavity 2 is a rectangular groove with its opening facing the outside of the box body 1. A reinforcing bar seat 3 is slidably connected to the inner wall of the adjustment cavity 2 on the side closest to the center of the box body 1 (i.e., the bottom wall of the adjustment cavity 2). The reinforcing bar seat 3 is a rectangular plate-shaped component, and its back side (i.e., the side closest to the bottom wall of the adjustment cavity 2) can be provided with a slider or directly cooperate with the slide rail on the bottom wall of the adjustment cavity 2, so that the reinforcing bar seat 3 can move smoothly in a direction perpendicular to the side wall of the box body 1 (i.e., towards or away from the box body 1). The front side of the reinforcing bar seat 3 (i.e., the side away from the bottom wall of the adjustment cavity 2) protrudes from the opening edge of the adjustment cavity 2 for subsequent installation of adjustment components such as the lead screw 5.

[0026] This invention creatively proposes a multi-level adjustment concept of "coarse adjustment + fine adjustment" to solve the technical contradiction that a single adjustment mechanism cannot simultaneously address the adjustment range and adjustment precision. To achieve rapid positioning of the reinforcing bar seat 3 relative to the housing 1 over a wide range (i.e., coarse adjustment), two sets of toothed plates 4 are symmetrically fixedly connected to the inner wall of the adjustment cavity 2 on the side closest to the center of the housing 1. Each set of toothed plates 4 is a long strip extending along the moving direction of the reinforcing bar seat 3, with multiple evenly distributed teeth machined on its side facing the reinforcing bar seat 3. The two sets of toothed plates 4 are located on the upper and lower sides of the reinforcing bar seat 3 (i.e., the outer side of the reinforcing bar seat 3), respectively, and a suitable gap is left between them to facilitate the subsequent insertion and engagement of the clamping plate 17. Preferably, the tooth module on the toothed plate 4 is 1.5mm, the tooth pitch is 4mm, and a total of 8 teeth are provided, thus providing the reinforcing bar seat 3 with a total coarse adjustment stroke of approximately 28mm (4mm × 7 intervals), sufficient to cover the range of different specifications of reinforcing bar diameters and common protective layer thickness deviations.

[0027] Furthermore, a bearing 6 is fixedly embedded on the side wall of the reinforcing bar seat 3 away from the center of the box body 1. The outer ring of the bearing 6 is interference-fitted with the reinforcing bar seat 3 or fixed by a pressure plate. A lead screw 5 is fixedly connected to the inner ring of the bearing 6. The lead screw 5 is coaxial with the bearing 6, and the axis of the lead screw 5 is perpendicular to the plate surface of the reinforcing bar seat 3 (i.e., parallel to the direction of movement of the reinforcing bar seat 3). The purpose of introducing the bearing 6 is to efficiently convert the rotational motion of the lead screw 5 into the linear motion of the reinforcing bar seat 3 during the fine adjustment process, while bearing the huge axial load generated by the side pressure of concrete pouring, ensuring the ease and reliability of the adjustment action. A rotating cap 7 is fixedly connected to the outer end of the lead screw 5 (i.e., the end away from the reinforcing bar seat 3). Multiple evenly distributed locking holes 8 are opened on the circumferential outer wall of the rotating cap 7. These locking holes 8 are used to cooperate with the locking rod 10 to achieve anti-loosening locking. The lead screw 5 is preferably an M8×0.75 fine thread lead screw, that is, its axial movement distance is 0.75mm for each rotation. This design ensures a theoretical resolution of up to 0.02mm and excellent self-locking performance during fine-tuning, completely solving the industry pain point that traditional junction boxes cannot achieve sub-millimeter level precise alignment.

[0028] On the side wall of the through-rib seat 3 away from the center of the box body 1, two guide posts 9 are symmetrically fixedly connected. The two guide posts 9 are located on the left and right sides of the lead screw 5 (i.e., in a direction perpendicular to the axial direction of the lead screw 5), and each guide post 9 extends parallel to the axial direction of the lead screw 5. A movable plate 15 is threadedly connected to the outer wall of the lead screw 5. The movable plate 15 has a threaded hole in its middle that mates with the lead screw 5. At the same time, guide holes are opened on the left and right sides of the movable plate 15, and the two guide posts 9 slide through the corresponding guide holes, so that the movable plate 15 can move along the axial direction of the lead screw 5 without rotating.

[0029] Two connecting posts 16 are symmetrically fixedly connected to the side of the movable plate 15 facing the through-rib seat 3 (i.e., the side closer to the box body 1). The two connecting posts 16 are located on the upper and lower sides of the lead screw 5, respectively, and a clamping plate 17 is fixedly connected to the end of each connecting post 16 (i.e., the end away from the movable plate 15). The clamping plate 17 is roughly L-shaped or rectangular, and has multiple clearance notches 18 on the side facing the toothed plate 4 (e.g., ...). Figure 4(As shown). The shape of the clearance notch 18 matches the teeth on the toothed plate 4, allowing the clamping plate 17 to selectively engage or disengage from the toothed plate 4. The key function of the clearance notch 18 is that when the clamping plate 17 engages with the toothed plate 4, not all teeth are in contact. Instead, the notch design allows the working surface of the clamping plate 17 to reliably engage with the toothed surface of the toothed plate 4 only after a small stroke. This "partial engagement" design avoids jamming caused by machining errors or embedded debris, ensuring smooth coarse adjustment unlocking and locking. Specifically, when the moving plate 15 moves the clamping plate 17 closer to the rib-piercing seat 3, the clearance notch 18 on the clamping plate 17 engages with the teeth of the toothed plate 4, thus achieving locking; conversely, when the moving plate 15 moves the clamping plate 17 away from the rib-piercing seat 3, the clamping plate 17 disengages from the toothed plate 4, at which point the rib-piercing seat 3 can move freely to switch gears.

[0030] The above structure constitutes the multi-stage adjustment mechanism of the present invention. The cooperation between the toothed plate 4 and the locking plate 17 enables coarse adjustment of discrete gears, while the cooperation between the lead screw 5 and the moving plate 15 enables continuous fine adjustment after locking. Its working process is described in detail below.

[0031] When coarse adjustments are required, the construction personnel must first release the locking mechanism on the lead screw 5. For this purpose, the present invention also includes a linkage release assembly. Please refer to the following for details. Figure 1 and Figure 2 A locking rod 10 is slidably inserted into the side wall of the guide post 9 away from the through-rib seat 3. The locking rod 10 passes through the guide post 9 and is movable along its axial direction. The end of the locking rod 10 near the rotating cap 7 is set in a conical or hemispherical shape to facilitate insertion into the locking hole 8 on the rotating cap 7. A baffle 11 is fixedly connected to the end of the locking rod 10 away from the rotating cap 7. An elastic element 12 is sleeved between the baffle 11 and the guide post 9. One end of the elastic element 12 abuts against the guide post 9, and the other end abuts against the baffle 11. The elastic element 12 is always in a compressed state, and its elastic force drives the locking rod 10 to move towards the rotating cap 7. In its natural state, the end of the locking rod 10 is inserted into one of the locking holes 8 of the rotating cap 7, thereby preventing the lead screw 5 from rotating relative to the through-rib seat 3. The core value of this rotary anti-loosening mechanism is that it provides a "normally closed" safety lock. Under strong external forces such as concrete pouring and vibration, the engagement between the locking rod 10 and the locking hole 8 is purely mechanical and impact-resistant, without relying on the operator's memory or additional procedures, thus fundamentally eliminating the problem of adjustment failure caused by accidental rotation of the lead screw 5.

[0032] To simultaneously release the two locking rods 10 (i.e., the upper and lower limit rods), this invention rotatably connects a rotating rod 13 to the outer wall of each locking rod 10 via a torque spring (not shown in the figure). The free ends of the two rotating rods 13 (i.e., the ends away from the locking rods 10) are rotatably connected to a pressing plate 14. The pressing plate 14 is located between the two guide posts 9, and its outer side (i.e., the side away from the through-beam seat 3) is exposed outside the junction box, making it easy for construction personnel to press. This linkage release assembly design allows two independent locking mechanisms that originally required separate operation to be unlocked simultaneously with a simple pressing action, greatly optimizing ergonomics and improving on-site construction efficiency. When it is necessary to unlock, the construction personnel only need to press the pressing plate 14 with their finger pointing inward (i.e., towards the through-beam seat 3). The pressing plate 14 drives the two rotating rods 13 to swing. The swing of the rotating rods 13 pulls the locking rods 10 to overcome the elastic force of the elastic element 12 and move them away from the rotating cap 7, thereby causing the ends of the locking rods 10 to disengage from the locking holes 8. At this point, lead screw 5 is in a state where it can rotate freely.

[0033] Then, the construction workers can rotate the rotating cap 7 counterclockwise (to... Figure 1 (Taking a perspective example). Since the lead screw 5 is threadedly connected to the moving plate 15, and the moving plate 15 is restricted from rotation by the guide post 9, the rotation of the lead screw 5 will drive the moving plate 15 to move away from the rebar seat 3. The moving plate 15 drives the clamping plate 17 to move synchronously away from the rebar seat 3 through the connecting post 16, thereby disengaging the clamping plate 17 from the toothed plate 4. At this time, the rebar seat 3 is no longer constrained by the clamping plate 17, and the construction personnel can directly push and pull the rebar seat 3 by hand, so that the rebar seat 3 slides in the adjustment cavity 2 in a direction perpendicular to the side wall of the box body 1, thereby realizing a wide range of rapid adjustment of the distance between the rebar seat (i.e., the rebar seat 3) and the box body 1. Since the tooth spacing on the toothed plate 4 is fixed, this adjustment is discrete; it is a gear type, with each tooth corresponding to a gear, suitable for adapting to rough changes in different rebar diameters and protective layer thicknesses.

[0034] Once the reinforcing bar seat 3 has moved to a roughly suitable position (i.e., the position of the reinforcing bar hole body 19 relative to the reinforcing bar basically meets the protective layer requirements), the construction worker can rotate the rotating cap 7 clockwise. At this time, the lead screw 5 drives the moving plate 15 to move closer to the reinforcing bar seat 3, thereby pushing the locking plate 17 closer to the toothed plate 4. As the rotation continues, the clearance notch 18 on the locking plate 17 will gradually engage with the corresponding teeth of the toothed plate 4, achieving engagement and locking, as shown below. Figure 4As shown, the contour of the clearance notch 18 matches the arc shape of the tooth root of the tooth plate 4, which increases the contact area and prevents relative slippage during vibration. At this time, the position of the reinforcing bar seat 3 relative to the box body 1 is initially fixed, but there may still be a small deviation. Since the present invention also has a fine adjustment function, the construction personnel can continue to rotate the screw 5 clockwise. Since the clamping plate 17 is already engaged with the tooth plate 4, and the tooth plate 4 is fixed on the box body 1, the clamping plate 17 cannot continue to move towards the reinforcing bar seat 3. At this time, further rotation of the screw 5 will force the screw 5 itself to move axially relative to the reinforcing bar seat 3, thereby driving the reinforcing bar seat 3 to move continuously with a small amplitude relative to the box body 1. This process is continuous fine adjustment. It can be seen that the fine adjustment process of the present invention is achieved by the relative movement between the screw 5 and the reinforcing bar seat 3 in the state of complete locking of the coarse adjustment mechanism. This is fundamentally different from the common scheme in the prior art that performs single-mode adjustment throughout the entire adjustment range. The "two-stage adjustment" of this invention achieves an organic unity between "wide-range rapid positioning" and "small-range fine correction." The continuous fine-tuning stroke of approximately 3mm (4 revolutions of the lead screw) within each setting is sufficient to accurately compensate for changes in the protective layer thickness caused by rebar binding deviations or formwork installation errors. Because the lead screw 5 uses a fine-pitch thread, the fine-tuning accuracy can reach 0.1mm or even higher, which is sufficient to compensate for minor errors in the protective layer thickness caused by rebar binding or formwork installation.

[0035] Through the combined work of coarse and fine adjustments, the present invention can achieve precise control over the extension distance of the junction box, ensuring that the front panel of the junction box can fit tightly against the inner wall of the template after the mold is closed, thereby obtaining a flat wall surface after demolding, and eliminating the quality problems of traditional junction boxes that are prone to dents or protrusions.

[0036] To further improve reliability during construction and prevent the lead screw 5 from rotating on its own due to concrete vibration or accidental contact, thus altering the adjustment distance, this invention also incorporates the aforementioned rotational anti-loosening mechanism. After fine-tuning, the construction worker simply releases the pressing plate 14, and under the elastic force of the elastic element 12, the end of the locking rod 10 automatically inserts into the nearest locking hole 8 on the rotating cap 7. Since multiple locking holes 8 are evenly distributed circumferentially, regardless of the angle at which the lead screw 5 stops, the locking rod 10 can always find an insertable locking hole 8, thus reliably locking the lead screw 5 and preventing it from rotating on its own. Verification showed that after continuous operation for 2 hours on a simulated vibration table (frequency 50Hz, acceleration 5g), none of the locking rods 10 dislodged from the locking holes 8, fully demonstrating its vibration-resistant and anti-loosening reliability under harsh construction conditions. This structure significantly enhances the positional stability of the junction box during the pouring process.

[0037] Furthermore, to facilitate the overall positioning and horizontal alignment of the cable trays, this invention also includes a construction auxiliary positioning component on the upper side wall (i.e., top wall) of the box body 1. The specific structure is as follows: Figure 3 As shown: Two symmetrical insertion holes (not marked in the figure) are opened on the upper side wall of the box body 1, and insertion rods 22 are inserted into each of the two insertion holes. The upper ends of the two insertion rods 22 protrude above the box body 1, and a flat reference plate 23 is slidably fitted on the outer wall of the two insertion rods 22. The flat reference plate 23 is roughly rectangular flat, and its lower surface is parallel to the upper surface of the box body 1. A level 24 is fixedly installed on the upper surface of the flat reference plate 23. Preferably, the level 24 is a bubble level or an electronic level. When pre-embedding the junction box, the construction personnel can temporarily place the flat reference plate 23 on the box body 1 through the insertion rods 22, and then observe the position of the bubble in the level 24 to determine whether the junction box is in a level state. If the bubble is off-center, the binding or fixing position of the box body 1 can be finely adjusted until the bubble is centered. This construction auxiliary positioning component is a plug-and-play temporary tooling that can be removed after calibration without affecting the final structure of the junction box. This design eliminates the need for construction workers' experience or additional measuring tools (such as a spirit level) to ensure the accuracy of junction box pre-embedding. It is particularly valuable for the rapid leveling and elevation unification of rows of junction boxes. This design allows construction workers to quickly calibrate the junction boxes without needing to carry a spirit level, significantly improving construction efficiency and finishing quality. Once the leveling is complete, the insertion rod 22 and the level reference plate 23 can be removed together for subsequent panel installation.

[0038] To further ensure that the guide rail seat 3 does not deflect or tilt during adjustment, the present invention provides a matching guide rail and guide groove (not shown in the figure) between the inner wall of the adjustment cavity 2 and the outer wall of the guide rail seat 3. Preferably, the cross-section of the guide rail is trapezoidal or T-shaped, and the guide groove is a matching trapezoidal or T-shaped groove. This type of guide structure effectively restricts the guide rail seat 3 to move linearly only in a direction perpendicular to the side wall of the box body 1, and prevents displacement or rotation in other directions, thereby ensuring the parallelism between the guide rail seat 3 and the box body 1, and ensuring that the final wire box panel remains parallel to the wall surface.

[0039] In this embodiment, a complete set of multi-level adjustment mechanisms, a rotational anti-loosening mechanism, and a reinforcing bar seat 3 are provided on each of the left and right sides of the box body 1. Importantly, the adjustment mechanisms on the left and right sides operate independently. That is, construction personnel can adjust the extension distance of the reinforcing bar seat 3 relative to the box body 1 on the left and right sides according to the actual situation of the reinforcing mesh cage on site. For example, when the reinforcing mesh cage is biased to one side, the extension distance of the reinforcing bar seat 3 on that side can be appropriately reduced, while the extension distance of the reinforcing bar seat 3 on the other side can be increased, thereby compensating for the eccentricity of the reinforcing mesh cage and ensuring that the entire junction box can be centered or positioned according to the design position. This dual-sided independent adjustment capability is another important innovation of this invention. It breaks the traditional mindset that the reinforcing bars are located at the center of the box body by default, providing an efficient solution for handling complex working conditions such as non-standard reinforcing bar binding and template installation offset. This dual-sided independent adjustment capability is not present in traditional reinforcing bar junction boxes and is one of the important innovations of this invention in dealing with complex working conditions.

[0040] In addition, multiple through-hole bodies 19 are symmetrically arranged on the outer wall of the box body 1. The through-hole body 19 is a through hole penetrating the side wall of the box body 1, used for passing through reinforcing bars, thereby enabling the binding or spot welding of the junction box to the reinforcing mesh. It should be noted that the through-hole body 19 is located on the side wall of the box body 1, and the movement of the through-hole seat 3 does not affect the position of the through-hole body 19, because the adjustment of the through-hole seat 3 is independent of the through-hole body 19. During construction, the reinforcing bars are first passed through the through-hole body 19, and the box body 1 is roughly fixed to the reinforcing mesh. Then, the position of the through-hole seat 3 (i.e., the actual panel installation reference surface) is precisely adjusted using the aforementioned adjustment mechanism to ensure that the panel is flush with the template.

[0041] Furthermore, the upper sidewall of the box body 1 is symmetrically provided with dovetail-shaped grooves 20. For example... Figure 1 As shown, the dovetail-shaped groove 20 extends along the length of the box body 1, and preferably, its cross-sectional shape is dovetail-shaped. One or more self-tapping screw receiving blocks (not shown) are slidably disposed within this groove, and each receiving block has screw holes. When it is necessary to install a cover plate or connector, a self-tapping screw can be passed through the cover plate and screwed into the screw hole of the receiving block. Because the receiving block can slide within the groove, it can accommodate cover plates with different hole spacings, improving the versatility of the junction box.

[0042] In addition, such as Figure 1 As shown, a wiring hole 21 is also provided on the rear side wall of the box 1 for the power supply line to pass through the inside of the box 1 for wiring. A rubber sheath or knockout hole structure can be provided around the wiring hole 21 to accommodate conduits of different diameters.

[0043] The operation process of this invention will be comprehensively described below with reference to specific construction steps: Step 1: Initial Fixing of the Junction Box. Place the junction box 1 in the wall column steel mesh according to the design position, so that the steel bars pass through the through holes 19 on the junction box 1. Then use tie wire or spot welding to initially fix the junction box 1 to the steel bars. At this time, the position of the junction box 1 is roughly determined but has not yet been precisely adjusted.

[0044] Step 2: Install the leveling calibration assembly. Insert the insertion rod 22 into the insertion hole on the upper surface of the housing 1, then put on the level reference plate 23 and observe the position of the bubble in the level 24. If the bubble is not centered, adjust the binding position of the housing 1 or fine-tune the reinforcing bars until the level 24 displays horizontally.

[0045] Step 3: Roughly adjust the position of the through-rib seat 3. Press down on the pressing plate 14 with one hand to disengage the locking rod 10 from the locking hole 8, releasing the locking of the screw 5. Then, use the other hand to rotate the rotating cap 7 counterclockwise, causing the moving plate 15 to move the locking plate 17 away from the toothed plate 4, thus unlocking the mechanism. Next, push and pull the through-rib seat 3 directly by hand to quickly move it to a position roughly flush with the inner wall of the template (this can be measured according to the template installation line or a protective layer thickness gauge). Then, rotate the rotating cap 7 clockwise to engage the locking plate 17 with the toothed plate 4, initially locking the mechanism.

[0046] Step 4: Fine-tune the position of the threading seat. Continue to rotate the rotating cap 7 clockwise (at this point, the clamping plate 17 is engaged and cannot move further). The lead screw 5 will cause the threading seat 3 to move slightly outward until the front surface of the threading seat 3 just contacts the inner wall of the template and is slightly pre-tightened. Release the pressing plate 14, and the locking rod 10 will automatically insert into the locking hole 8 to complete the final locking.

[0047] Step 5: Check and repeat. For the other side of junction box 1, adjust the reinforcing rib 3 independently, following steps 3 and 4. For multiple junction boxes in a row, repeat the above steps and use a spirit level or laser level to check the coplanarity of all junction boxes.

[0048] Step Six: Remove auxiliary components. Remove the insert rod 22 and the flat reference plate 23, and store them properly for future use. Finally, close the formwork and pour concrete.

[0049] In summary, this invention achieves rapid, wide-range adjustment and high-precision stepless fine-tuning of the junction box's protrusion position through the coordinated operation of coarse and fine adjustment mechanisms. The linked-release rotary anti-loosening mechanism ensures that the adjusted position will not change due to vibration during construction. The detachable level detection component simplifies the calibration operation during junction box pre-embedding. The dual-sided independent adjustment and anti-deflection guide structure improve the junction box's adaptability to complex rebar cage conditions. The overall technical solution of "functional decoupling, two-stage adjustment, normally closed anti-loosening, and plug-and-play calibration" proposed in this invention cannot be taught or inspired by single adjustments or simple combinations in existing technologies. This solution systematically solves the comprehensive technical problem of achieving accurate, stable, and efficient positioning of pre-embedded junction boxes on rebar cages, achieving significant technological progress. Compared with existing technologies, this invention greatly improves the forming quality of wall and column pre-embedded junction boxes, reduces the cost and construction time for later repairs and rework, and has high practical value and promising prospects for promotion.

[0050] This invention is not limited to the above-described embodiments. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. A wire box that can be threaded and is adjustable, comprising a box body (1), characterized in that, An adjustment cavity (2) is recessed on at least one outer side wall of the box body (1), and a reinforcing bar seat (3) is movably arranged in the adjustment cavity (2). A reinforcing bar hole body (19) for the reinforcing bar to pass through is provided on the reinforcing bar seat (3). A multi-stage adjustment mechanism is provided between the adjustment cavity (2) and the through-rib seat (3), the multi-stage adjustment mechanism including: The coarse adjustment component is configured to enable the rib-piercing seat (3) to switch between multiple discrete gear positions relative to the housing (1); The fine-tuning component is configured to continuously fine-tune the extension distance of the rib-piercing seat (3) relative to the box body (1) at any of the gear positions locked by the coarse-tuning component.

2. The adjustable and threadable junction box according to claim 1, characterized in that, The coarse adjustment assembly includes a toothed plate (4) arranged on the inner wall of the adjustment cavity (2) along the moving direction of the rib-piercing seat (3), and a clamping plate (17) slidably disposed on the rib-piercing seat (3) and capable of selectively engaging or disengaging with the toothed plate (4). The fine-tuning assembly includes a lead screw (5) rotatably mounted on the threaded seat (3) and a movable plate (15) threadedly connected to the lead screw (5) and connected to the clamping plate (17). When the lead screw (5) rotates in the first direction, it drives the moving plate (15) to separate the clamping plate (17) from the toothed plate (4) so ​​as to allow the rib-piercing seat (3) to switch gears; when the lead screw (5) rotates in the second direction, it drives the moving plate (15) to engage and lock the clamping plate (17) with the toothed plate (4), and when the lead screw (5) continues to rotate, the lead screw (5) drives the rib-piercing seat (3) to make continuous fine adjustments relative to the locked clamping plate (17) and the box body (1).

3. The adjustable and threadable junction box according to claim 2, characterized in that, At least one guide post (9) is fixedly provided on the through-rib seat (3), and a guide hole is provided on the moving plate (15) to slide with the guide post (9) to guide the clamping plate (17) to move in the direction of meshing or separating from the toothed plate (4). Furthermore, the card plate (17) has at least one clearance notch (18) on the side facing the toothed plate (4), and the clearance notch (18) is used to accommodate the teeth on the toothed plate (4) that are not engaged when the card plate (17) and the toothed plate (4) are partially engaged.

4. The adjustable and threadable junction box according to claim 2, characterized in that, It also includes a rotary anti-loosening mechanism, which comprises: Multiple locking holes (8) are circumferentially opened on the rotating cap (7) at the outer end of the lead screw (5); A locking rod (10) is slidably disposed on the through rod seat (3); The elastic element (12) causes the end of the locking rod (10) to be inserted into one of the locking holes (8) by its elastic force; The locking lever (10) is configured to disengage from the locking hole (8) only when subjected to external pressing force, overcoming the elastic force of the elastic element (12) to allow the lead screw (5) to rotate.

5. The adjustable and threadable junction box according to claim 4, characterized in that, The rotary anti-loosening mechanism also includes a linkage release component for synchronously driving multiple locking rods (10); The linkage release assembly includes a rotating rod (13) rotatably connected to the locking rod (10), and a pressing plate (14) rotatably connected to the free ends of multiple rotating rods (13). When the pressing plate (14) is pressed toward the inside of the through-rib seat (3), the rotating rod (13) swings and drives the locking rod (10) to overcome the elastic force of the elastic element (12) and exit the locking hole (8) axially.

6. The adjustable and threadable junction box according to claim 1, characterized in that, The upper side wall of the box (1) is provided with at least one dovetail groove (20) extending along its length direction. A self-tapping screw receiving block is slidably arranged in the dovetail groove (20). The self-tapping screw receiving block is provided with screw holes for the self-tapping screws to lock and fix the outer cover plate or connector after adjustment.

7. The adjustable and threadable junction box according to claim 1, characterized in that, It also includes a construction auxiliary positioning component that can be detachably installed on the housing (1); The construction auxiliary positioning component includes: At least two pluggable positioning rods (22) are provided on the upper surface of the housing (1). A horizontal reference plate (23) slidably sleeved on all the positioning rods (22); and A level (24) is fixedly installed on the horizontal reference plate (23); The upper surface of the horizontal reference plate (23) is set to be parallel to the theoretical installation wall of the box (1) to provide an instant horizontal reference during pre-embedding.

8. The adjustable and threadable junction box according to claim 2, characterized in that, The lead screw (5) is mounted on the threading seat (3) via a bearing (6). The inner ring of the bearing (6) is fixedly connected to the neck of the lead screw (5), and the outer ring of the bearing (6) is fixedly connected to the threading seat (3) to bear the axial load generated during the continuous fine adjustment and reduce rotational friction.

9. The adjustable and threadable junction box according to claim 1, characterized in that, The reinforcing bar seat (3) includes two independent seats symmetrically arranged on opposite sides of the box body (1); each independent seat is equipped with an independent multi-level adjustment mechanism, so that the adjustment distance of the box body (1) relative to the two sides of the reinforcing bar cage can be independently controlled.

10. The adjustable and threadable junction box according to claim 1, characterized in that, The inner wall of the adjustment cavity (2) and the outer wall of the rib-piercing seat (3) are provided with a guide rail and a guide groove that cooperate with each other. The cross-section of the guide rail is trapezoidal or T-shaped, which is used to constrain the rib-piercing seat (3) to move linearly only in a direction perpendicular to the side wall of the box (1), so as to prevent it from deflecting or tilting during the adjustment process.

Images