A pre-buried wiring device for building construction

Abstract

The present invention discloses a pre-buried wiring device for building construction, comprising a steering assembly, wherein the steering assembly is provided with a cable insertion fixed end and at least two cable insertion movable ends, the cable insertion movable ends are each provided with a locking member, and the locking member is used to lock the position of the cable insertion movable end on the steering assembly to thereby form a cable bending line, the cable insertion fixed end and the cable insertion movable end are both connected with a protective shell, and the protective shell is spliced ​​along the length of the cable to form a cable protection channel with a certain length, the wiring device facilitates the reversing of the cable while protecting the cable, avoiding damage to the cable protective layer, and classifies and organizes the cables, avoiding the problem of poor heat dissipation and easy aging between the cables caused by the mixing and interlacing of the cables.

Description

Technical Field

[0001] The invention relates to a pre-buried wiring device for building construction. Background Art

[0002] The pre-buried wiring device refers to the wiring device for water and electricity when the building electrical construction is connected to water and electricity. In the past, the ground wiring of the house was simply laid in a rectangular road opened on the cement floor, and then poured with cement to complete it. However, this method is prone to cause difficulties in water and electricity maintenance. When maintenance is required, the ground needs to be excavated, which is time-consuming and labor-intensive. Therefore, it has developed into a method of wiring through the top of the water and electricity, and laying the wires in the wire box. This is mainly achieved by means of suspended ceilings. In the prior art, one way of wiring an electrical system line is to run it through the ceiling, that is, to achieve line laying through a suspended ceiling. Generally, a junction box is installed on the top of the building, and the cables are laid in the junction box, such as the patent document with publication number CN116031809A and the patent document with publication number CN113629648B. Since there are some requirements for bending and turning the cables during cable laying, if the turning angle is not a right angle, the junction box needs to be cut with sharp corners on site to meet the connection requirements of the junction box, and the construction is relatively cumbersome. During the cable turning process, most of the cables are directly bent and connected inside the device. The sharp junction of the junction box may cause damage to the cable protective layer, and during the bending process, special tools must be operated, which may also damage the outer protective layer of the cable, affecting the line laying efficiency, and may also affect the construction quality, leaving safety hazards, and then affecting subsequent use. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pre-buried wiring device for construction, which is convenient for changing the direction of cables while protecting the cables to avoid damage to the cable protective layer, and classifies and organizes the cables to avoid the problem of poor heat dissipation and easy aging of the cables due to the mixing and interweaving of the cables.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pre-buried wiring device for construction, comprising a steering assembly, the steering assembly being provided with a cable entry fixed end and at least two cable exit movable ends, the cable exit movable ends being provided with locking members and the locking members being used to lock the position of the cable exit movable ends on the steering assembly to thereby form a cable bending line, the cable entry fixed end and the cable exit movable ends being both connected with a protective shell, the protective shell being spliced ​​along the length of the cable to form a cable protection channel having a certain length.

[0005] Furthermore, the steering assembly includes an upper cover and a lower shell, and the upper cover and the lower shell are detachably connected. The upper cover and the lower shell are connected to form a cable reversing cavity. The fixed end where the cable enters is arranged on the lower shell. A reversing member and at least two rotating circles are provided in the cable reversing cavity. The movable end where the cable exits is distributed on the rotating circle and is locked on the lower shell by a locking member. The cable end where the cable enters the fixed end is then abutted against the abutment of the cable end by the reversing member and then reversed relative to the position of the corresponding movable end where the cable exits.

[0006] Furthermore, the fixed end through which the cable enters includes two fixed protrusions extending upward from the outer wall of the lower shell, and the spacing between the fixed protrusions is the width of the protective shell. The movable end through which the cable exits includes two movable protrusions extending upward from the rotating circle, and the two movable protrusions have abutment arms extending laterally toward the direction of the lower shell, and the locking piece is arranged on at least one abutment arm.

[0007] Furthermore, an annular groove is provided on the outer wall of the lower shell and an annular sliding groove is provided on the upper end surface of the annular groove. The locking member includes a rotating rod rotatably connected to the abutting arm. The lower end of the rotating rod is a threaded section and a clamping plate is connected to the threaded section and an anti-slip pad is provided on the upper end surface of the clamping plate facing the annular groove. A moving rod passes through the clamping plate, and the upper end of the moving rod is slidably connected to the annular sliding groove. When the rotating rod rotates, the clamping plate is restricted by the moving rod and will move along the length direction of the rotating rod to lock the abutting arm in the position of the lower shell.

[0008] Furthermore, the upper cover is provided with a fixed opening for the protective shell to pass through and connect with the fixed end through which the cable enters, and at least two groups of adjustable openings for the protective shell to pass through and connect with the movable end through which the cable exits. The adjustable openings are formed by sliding and telescopic movement of multiple groups of rotating telescopic parts arranged on the upper cover, and the fixed openings are formed by two extension plates fixedly arranged on the upper cover.

[0009] Furthermore, the reversing member includes a left-turn adjusting part and a right-turn adjusting part, each of which includes a fixed shaft, a fixed disk and a steering plate are provided on the fixed shaft, a switching annular groove is extended downwardly on the fixed disk, and a limiting groove is provided laterally on the side wall of the fixed disk toward the annular groove, the limiting part is slidably engaged with the limiting groove, the limiting part is used to limit the position of the limiting block in the limiting groove and thus determine the rotation angle of the rotating plate, a rotating block is provided on the lower end surface of the rotating plate corresponding to the annular groove, and the contact between the rotating block and the annular groove is a rough surface.

[0010] Furthermore, the end surface of the rotating plate away from the fixed end through which the cable is inserted is provided with a plurality of concave cavities and vertical guide grooves, the concave cavities and the vertical guide grooves all correspond one by one to the threading holes on the rotating plate, the diameter of the threading holes is larger than the diameter of the cable abutment joint, and a clamping plate that moves up and down is connected to the vertical guide groove, and the clamping plate is provided with holes corresponding to the concave cavities, and an L-shaped plate passing through the holes is provided on the concave cavity, and a protrusion is provided on the upper surface of the L-shaped plate, and then the L-shaped plate is pushed through the cable abutment joint to cause the clamping plate to move down to abut the cable abutment joint, thereby preventing the cable from escaping from the threading hole.

[0011] Furthermore, the reversing member includes a first rotating part and a second rotating part, each of which includes a fixed shaft, a disc and a rotating plate are provided on the fixed shaft, a side wall groove is provided on the side of the disc, a linkage block is slidably connected to the side wall groove, and the limit block is linked to the rotating plate, a connecting rod is provided on the linkage block, the connecting rod passes through the arc-shaped through groove of the upper cover and is slidably engaged with the arc-shaped through groove, and an abutment is provided on the rotating plate corresponding to the cable inserted into the fixed end, the abutment is used to prevent the cable from detaching from the rotating plate, and then the rotating plate is driven to rotate by the connecting rod to reverse the cable.

[0012] Furthermore, the abutment member includes a plurality of threading holes on the rotating plate, at least two arc-shaped grooves are provided on the inner wall of the threading hole outlet end, a telescopic spring is fixed in the arc-shaped groove and the other end of the telescopic spring is connected to an abutment block, and the cross-section of the abutment block is a right-angled trapezoid.

[0013] Furthermore, the protective shell includes a concave shell and a removable cover plate is provided on the upper end surface of the concave shell, clamping blocks are provided on both sides of the front end of the concave shell and a first clamping groove is provided on the clamping block, a placement groove is extended at the rear end, vertical clamping grooves are provided on both sides of the placement groove corresponding to the clamping, the placement groove is provided with a through hole corresponding to the first clamping groove, and the through hole is slidably connected with the clamping block, a partition plate with a rectangular cavity is provided in the middle part of the rectangular shell, a concave plate and a rectangular plate are slidably connected in the rectangular cavity, the ends of the concave plate and the rectangular plate are slidably connected with the side wall of the rectangular shell, and wire clamping parts are provided on the partition plate and the concave shell.

[0014] Beneficial effects:

[0015] 1. The wiring device includes a protective shell and a steering assembly, and both the steering assembly and the protective shell are detachable. The steering assembly is provided with a steering part and the protective shell is provided with a wire clamping part, which can realize the classification and arrangement of cables with or without steering and different functions, so as to facilitate subsequent maintenance and inspection.

[0016] 2. The protective shell includes a concave shell and a removable cover is provided on the concave shell. A partition plate is provided in the concave shell. The partition plate is slidably connected with the concave plate and the rectangular plate. The partition plate, the concave plate and the rectangular plate are used to form two line collecting chambers to separate the switching and non-switching. Then, the lines are arranged in a regular manner through the setting of the line clamping parts to avoid the mixing and crossing of the lines, which leads to poor heat dissipation between the lines and easy aging of the lines.

[0017] 3. The steering assembly includes an upper cover, a lower shell, a reversing member, and the lower shell is provided with a fixed cable entry end and a cable exit movable end. The cable exit movable end is locked in position on the lower shell by a locking member to form a cable transmission route with different steering angles. There is no need to cut the wire box on site according to the steering angle, which improves construction and effectively reduces the possibility of loss caused by cable bending through the setting of the steering member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of pre-buried wiring device for cables Figure 1 ;

[0019] Figure 2 Schematic diagram of pre-buried wiring device for cables Figure 2 ;

[0020] Figure 3 is a schematic diagram of a protective shell;

[0021] Figure 4 for Figure 1 Bottom view of the middle upper cover;

[0022] Figure 5 for Figure 2 Bottom view of the middle upper cover;

[0023] Figure 6 It is a top view of the lower shell;

[0024] Figure 7 is a schematic diagram of a locking member;

[0025] Figure 8 for Figure 1 Schematic diagram of the commutation component;

[0026] Fig. 9 for Figure 2 Schematic diagram of the commutation member;

[0027] Fig.10 for Fig. 9 Cross-sectional view of the threading hole.

[0028] Description of the drawings: 1. Steering assembly; 2. Cable entering fixed end; 21. Fixed protrusion; 3. Cable exiting movable end; 31. Movable protrusion; 32. Abutment arm; 4. Locking piece; 41. Rotating rod; 42. Clamping plate; 43. Moving rod; 5. Protective shell; 51. Concave shell; 52. Cover plate; 53. Snap-in block; 531. First snap-in groove; 54. Placement groove; 541. Vertical snap-in groove; 542. Through hole; 55. Partition plate; 56. Concave plate; 57. Rectangular plate; 58. Wire clamp; 6. Upper cover; 61. Fixed opening; 62. Extension plate; 63. Adjustable opening; 64. Rotating Telescopic member; 7, lower shell; 71, annular groove; 8, cable reversing cavity; 9, reversing member; 10, rotating circle; 11, left-turn adjustment part; 12, right-turn adjustment part; 13, fixed shaft; 14, fixed disk; 15, steering plate; 16, limit part; 17, threading hole; 18, abutment plate; 181, hole; 19, L-shaped plate; 191, protrusion; 20, first rotating part; 21, second rotating part; 22, disk; 221, side wall groove; 23, linkage block; 24, connecting rod; 25, arc-shaped through groove; 26, abutment member; 261, arc-shaped groove; 262, telescopic spring; 263, abutment block. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] Refer to Figure 1-Figure 10As shown, the present application provides a pre-buried wiring device for construction, including a steering assembly 1, the steering assembly 1 is provided with a cable insertion fixed end 2 and at least two cable outlet movable ends 3 (the following text of the present application takes two cable outlet movable ends 3 as an example), the cable outlet movable ends 3 are each provided with a locking member 4 and the locking member 4 is used to lock the position of the cable outlet movable end 3 on the steering assembly 1 to form a cable bending line, the cable bending angle should not be too small to protect the cable, the cable insertion fixed end 2 and the cable outlet movable end 3 are both connected with a protective shell 5, and the protective shell 5 is spliced ​​along the length of the cable to form a cable protection channel with a certain length. Specifically, the steering assembly 1 includes an upper cover 6 and a lower shell 7, and the upper cover 6 and the lower shell 7 can be connected by magnetic attraction or snap connection, or other detachable connection methods. The upper cover 6 is provided with a fixed opening 61 for the protective shell 5 to pass through and connect with the cable insertion fixed end 2, and the fixed opening 61 is formed by two extension plates 62 fixed to the upper cover 6. The upper cover 6 is also provided with an adjustable opening 63 for the protective shell 5 to pass through and connect with the movable end 3 through which the cable passes. The adjustable opening 63 is formed by sliding and telescoping multiple groups of rotating and telescopic parts 64 provided on the upper cover 6. The rotating and telescopic parts 64 preferably adopt four groups to form one to three adjustable openings 63, and the number of adjustable openings 63 is determined according to actual conditions. The upper cover 6 may also be provided with a removable shielding plate to facilitate subsequent inspection during cable maintenance or overhaul. The multiple groups of rotating and telescopic parts 64 all include a first arc plate with a first arc protrusion that is slidably connected to the upper cover 6, the first arc protrusion is provided on the inner wall of the first arc plate, an arc channel with the same shape as the first arc plate is provided in the first arc plate, a second arc plate with a second arc protrusion is slidably connected in the arc channel, the first arc plate is slidably connected to a third arc plate via the first arc protrusion, the second arc plate is slidably connected to a fourth arc plate via the second arc protrusion, and the sliding of the fourth arc plate enables the fourth arc plate to move along the second The arc plate slides, and when it slides to the end, it continues to slide so that the second arc plate slides along the arc cavity, and the third arc plate slides along the first arc plate, and then the adjustable opening 63 is formed by the telescopic sliding between the arc plates. In order to ensure the fixation of the adjustable opening 63 and avoid movement between the arc plates, the side walls of the first arc plate and the fourth arc plate and the side walls of the cable exiting the active end 3 can be set to be magnetically attracted, or the damping between the sliding of the arc plates can be increased, thereby avoiding the arc plates from self-expansion and contraction due to forces other than human adjustment.

[0031] Refer to Figure 6As shown, the upper cover 6 and the lower shell 7 are connected to form a cable reversing cavity 8 inside, and the cable insertion fixed end 2 is arranged on the lower shell 7. The cable insertion fixed end 2 includes two fixed protrusions 21 extending upward from the outer wall of the lower shell 7, and the spacing between the fixed protrusions 21 is the width of the protective shell 5. The positions of the two extension plates 62 correspond to the positions of the two fixed protrusions 21. At least two rotating circles 10 are arranged in the cable reversing cavity 8. The rotating circles 10 are two circles with the same center but different diameters, and the rotating circles 10 are slidably connected to the lower shell 7. A cable passing out movable end 3 is arranged on one rotating circle 10, and the cable passing out movable end 3 is locked on the lower shell 7 through the locking member 4 after adjusting the position of the cable passing out movable end 3 according to the line layout diagram, and the cable passing out movable end 3 and the cable passing in fixed end 2 form a certain angle. The cable passing through movable end 3 includes two movable protrusions 31 extending upward from the rotating circle 10. The spacing between the two movable protrusions 31 is the same as the spacing between the fixed protrusions 21, which is the width of the protective shell 5. The fixed protrusions 21 and the movable protrusions 31 are provided with card slots for the protective shell 5 to be clamped on the side walls. The size of the adjustable opening 63 is equal to the spacing between the two movable protrusions 31. The two movable protrusions 31 have abutment arms 32 extending laterally toward the direction of the lower shell 7. The locking piece 4 is arranged on one of the abutment arms 32 or a locking piece 4 can be arranged on each abutment arm 32 to ensure the stability of the position of the cable passing through movable end 3.

[0032] Refer to Figure 6 As shown, the outer wall of the lower shell 7 is provided with an annular groove 71 and the upper end surface of the annular groove 71 is provided with an annular sliding groove. The locking member 4 includes a rotating rod 41 rotatably connected to the abutting arm 32. The abutting arm 32 is provided with a circular hole, and the inner wall of the circular hole is provided with a concave groove. The rotating rod 41 is provided with a rotating block corresponding to the concave groove. The setting of the rotating block and the concave groove ensures that the rotating rod 41 can only rotate and will not move up and down. The lower end of the rotating rod 41 is a threaded section and the threaded section is connected to a clamping plate 42. The clamping plate 42 is provided with an anti-slip pad facing the upper end surface of the annular groove 71. The anti-slip pad is set to fix the lifting position to avoid deviation. The clamping plate 42 is provided with a through hole, and a moving rod 43 is movably inserted at the through hole. The upper end of the moving rod 43 is slidably connected to the annular sliding groove. When the rotating rod 41 rotates, the clamping plate 42 is restricted by the moving rod 43 and moves along the length direction of the rotating rod 41, thereby locking the movable protrusion 31 in the position of the lower shell 7.

[0033] Refer to Figure 7 , Figure 8 As shown, a reversing member 9 is also provided in the cable reversing cavity 8. The reversing member 9 tightens the abutment joint of the cable end where the cable passes through the fixed end 2 and then reverses the direction of the corresponding cable passing through the movable end 3. The abutment joint at the end of the cable is a conical sleeve on the sleeve cable. The reversing member 9 in the present application adopts two structures, one of which is referred to as Figure 7: It includes a left-turn adjustment part 11 and a right-turn adjustment part 12. The height positions of the left-turn adjustment part 11 and the right-turn adjustment part 12 are different, so as to realize the reversal in two directions. The corresponding adjustment part is selected according to the direction in which the cable passes out. The left-turn adjustment part 11 and the right-turn adjustment part 12 both include a fixed shaft 13. The fixed shaft 13 is provided with a fixed disk 14 and a steering plate 15. An annular groove is extended downward on the fixed disk 14, and a limiting groove is horizontally provided on the side wall of the fixed disk 14 toward the annular groove. The sliding card on the limiting groove The limiting part 16 is connected, and the limiting part 16 is used to limit the position of the limiting block in the limiting groove and thus determine the rotation angle of the rotating plate. The limiting part 16 includes a limiting block that is slidably connected to the limiting groove. The limiting block can be locked in position by the locking member 4 of the present application to limit the rotation angle of the rotating plate, or by providing a plurality of plug holes on the circumference of the outer wall of the fixed disk 14, the plug holes are distributed at a certain angle, and a latch is provided on the corresponding plug hole of the limiting block. According to the required rotation angle of the rotating plate, the limiting block is moved and restricted by the latch. A rotating block is provided on the lower end surface of the rotating plate corresponding to the annular groove, and the rotating block contacts the annular groove as a rough surface to ensure that the rotating plate will not be easily rotated. The end surface of the rotating plate away from the fixed end 2 where the cable is inserted is provided with a plurality of concave cavities and vertical guide grooves, the concave cavities and the vertical guide grooves all correspond to the threading holes 17 on the rotating plate one by one, the diameter of the threading holes 17 is larger than the diameter of the abutment joint of the cable to ensure that the cable can pass through the threading holes 17, and the vertical guide groove is connected with a clamping plate 18 that moves up and down, and the clamping plate 18 is provided with a hole 181 corresponding to the concave cavity, and an L-shaped plate 19 that passes through the hole 181 is provided on the concave cavity, and a block is provided on the upper end surface of the L-shaped plate 19, which can ensure that the clamping plate 18 moves up and down along the protrusion 191. In the initial state, the clamping plate 18 is at the highest point of the protrusion 191. When the cable is continuously inserted into the threading hole 1 7, the abutment at the end of the cable will drive the L-shaped plate 19 to move forward, and the abutment block will move downward due to the movement of the L-shaped block, and then when the L-shaped plate 19 moves to the end and cannot move forward, the abutment block is just stuck between the abutment and the threading hole 17, so that the cable abutment cannot be withdrawn and can only continue to be pushed forward. During the continued pushing, the cable will push the rotating plate to rotate, and after the rotating plate is rotated from straight to a position relative to the cable through the active end 3, the cable continues to be pushed into the active shell of the cable through the active end 3, realizing the required cable steering, and the remaining cables that do not need to be turned and passed through directly will be passed through another adjustment part. The reversing member 9 sets the rotation angle of the rotating plate in advance before threading, and then the cable can be reversed by the rotating plate during the threading process.

[0034] A second reference is also provided Figure 8As shown, the second type of reversing member 9 is used to manually adjust the reversing of the cable during threading, so the wiring device of the reversing member 9 is semi-buried (the outer end surface of the wiring device is exposed to the outside, or is directly installed on the wall or ceiling. The reversing member 9 includes a first rotating part 20 and a second rotating part 21. The first rotating part 20 and the second rotating part 21 both include a fixed shaft 13. The fixed shaft 13 is provided with a disc 22 and a rotating plate. The side of the disc 22 is provided with a side wall groove 221. The side wall groove 221 is slidably connected with a linkage block 23, and the limit block is linked with the rotating plate. The linkage block 23 is provided with a connecting rod 24. The connecting rod 24 passes through the arc-shaped through groove 25 of the upper cover 6 and is slidably engaged with the arc-shaped through groove 25. The rotating plate is provided with an abutment member 26 corresponding to the cable inserted into the fixed end 2. The abutment member 26 includes a plurality of threading holes 17 provided on the rotating plate, and the threading holes 17 have a plurality of threading holes 17 at the outlet end. The wall is provided with at least two arc grooves 261, and a telescopic spring 262 is fixed in the arc groove 261 and the other end of the telescopic spring 262 is connected to a contact block 263, and the cross section of the contact block 263 is a right-angle trapezoid. When the cable contact joint passes through the threading hole 17, the contact joint will squeeze the contact block 263, and the telescopic spring 262 will contract, so that the contact joint passes through the threading hole 17. The telescopic spring 262 will expand the contact block 263 to restore the original position, and then the contact joint will contact the contact block 263, so that the cable can only extend forward and cannot extend backward. After that, the connecting rod 24 moves along the arc groove 25 to the position where the cable and the cable pass-through movable end 3 are relative, and then the connecting rod 24 and the arc groove 25 are locked, pushing the cable to extend the cable into the protective shell 5 of the cable pass-through movable end 3, so as to realize the reversal of the cable. The second type of wiring device can facilitate the subsequent maintenance or repair of the cable.

[0035] Refer to Figure 3 As shown, the protective shell 5 includes a concave shell 51 and a removable cover plate 52 is provided on the upper end surface of the concave shell 51, a clamping block 53 is provided on both sides of the front end of the concave shell 51, and a first clamping groove 531 is provided on the clamping block 53, and a placement groove 54 is extended at the rear end, and vertical clamping grooves 541 are provided on both sides of the placement groove 54 corresponding to the clamping block 53, and a through hole 542 is provided in the placement groove 54 corresponding to the first clamping groove 531, and the through hole 542 is slidably connected to the clamping block 53, and a partition plate 55 with a rectangular cavity is fixed in the middle of the rectangular shell, and a concave plate 56 is slidably connected in the rectangular cavity. And the rectangular plate 57, the concave plate 56 and the ends of the rectangular plate 57 all slide with the side wall of the rectangular shell, so as to facilitate the inspection of the upper and lower cable placement cavities during the subsequent inspection and maintenance of the cables. In order to ensure the neatness of the cables, a wire clamping member 58 is provided on the partition plate 55 and the concave shell 51 (since the wire clamping member 58 is a prior art, it will not be described in detail here). In this application, the cables are divided into two types in the protective shell 5, one requires reversing, and the other does not require reversing. After the cables are classified, the cables can be organized by the wire clamping member 58 to ensure the subsequent inspection or maintenance of the cables.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pre-buried wiring device for building construction, characterized in that: The invention comprises a steering assembly (1), wherein the steering assembly (1) is provided with a cable insertion fixed end (2) and at least two cable insertion movable ends (3), wherein the cable insertion movable ends (3) are each provided with a locking member (4), and the locking member (4) is used to lock the position of the cable insertion movable end (3) on the steering assembly (1) to thereby form a cable bending line, wherein the cable insertion fixed end (2) and the cable insertion movable end (3) are both connected with a protective shell (5), and the protective shell (5) is spliced ​​along the length of the cable to form a cable protection channel having a certain length.

2. The pre-buried wiring device for building construction according to claim 1, characterized in that: The steering assembly (1) comprises an upper cover (6) and a lower shell (7), and the upper cover (6) and the lower shell (7) are detachably connected. The upper cover (6) and the lower shell (7) are connected to form a cable reversing cavity (8) inside. The cable insertion fixed end (2) is arranged on the lower shell (7). A reversing member (9) and at least two rotating circles (10) are arranged in the cable reversing cavity (8). The cable exiting movable end (3) is distributed on the rotating circle (10) and is locked on the lower shell (7) by a locking member (4). Then, the reversing member (9) abuts against the abutting head of the cable end of the cable insertion fixed end (2) and then reverses the direction of the cable against the position of the corresponding cable exiting movable end (3).

3. The pre-buried wiring device for building construction according to claim 2, characterized in that: The cable insertion fixed end (2) comprises two fixed protrusions (21) extending upward from the outer wall of the lower shell (7), and the spacing between the fixed protrusions (21) is the width of the protective shell (5); the cable exit movable end (3) comprises two movable protrusions (31) extending upward from the rotating circle (10), and the two movable protrusions (31) are laterally extended with abutment arms (32) in the direction of the lower shell (7), and the locking member (4) is at least arranged on one abutment arm (32).

4. The pre-buried wiring device for construction according to claim 3, characterized in that: The outer wall of the lower shell (7) is provided with an annular groove (71) and the upper end surface of the annular groove (71) is provided with an annular sliding groove. The locking member (4) comprises a rotating rod (41) rotatably connected to the abutting arm (32). The lower end of the rotating rod (41) is a threaded section and the threaded section is connected with a clamping plate (42). The clamping plate (42) is provided with an anti-slip pad on the upper end surface facing the annular groove (71). A moving rod (43) passes through the clamping plate (42). The upper end of the moving rod (43) is slidably connected to the annular sliding groove. When the rotating rod (41) rotates, the clamping plate (42) is restricted by the moving rod (43) and moves along the length direction of the rotating rod (41) to lock the abutting arm (32) in the position of the lower shell (7).

5. The pre-buried wiring device for building construction according to claim 4, characterized in that: The upper cover (6) is provided with a fixed opening (61) for the protective shell (5) to pass through and connect with the fixed end (2) for the cable to pass through, and at least two groups of adjustable openings (63) for the protective shell (5) to pass through and connect with the movable end (3) for the cable to pass through. The adjustable openings (63) are formed by sliding and telescoping multiple groups of rotating telescopic members (64) provided on the upper cover (6), and the fixed openings (61) are formed by two extension plates (62) fixedly provided on the upper cover (6).

6. The pre-buried wiring device for building construction according to claim 5, characterized in that: The reversing member (9) comprises a left-turn adjusting portion (11) and a right-turn adjusting portion (12), each of which comprises a fixed shaft (13), a fixed disk (14) and a steering plate (15) being provided on the fixed shaft (13), an annular groove extending downwardly from the fixed disk (14) and a limiting groove being provided on the side wall of the fixed disk (14) in a transverse direction toward the annular groove, a limiting portion (16) being slidably engaged on the limiting groove, the limiting portion (16) being used to limit the position of a limiting block in the limiting groove and thus determine the rotation angle of the rotating plate, a rotating block being provided on the lower end surface of the rotating plate corresponding to the annular groove, and the rotating block being in contact with the annular groove as a rough surface.

7. The pre-buried wiring device for building construction according to claim 6, characterized in that: The end surface of the rotating plate away from the fixed end (2) where the cable is inserted is provided with a plurality of concave cavities and vertical guide grooves, the concave cavities and vertical guide grooves all correspond to the threading holes (17) on the rotating plate one by one, the diameter of the threading holes (17) is larger than the diameter of the cable abutment joint, the vertical guide groove is connected with a clamping plate (18) that moves up and down, the clamping plate (18) is provided with a hole (181) corresponding to the concave cavity, the concave cavity is provided with an L-shaped plate (19) that passes through the hole (181), the upper end surface of the L-shaped plate (19) is provided with a protrusion (191), and then the L-shaped plate (19) is pushed by the cable abutment joint to cause the clamping plate (18) to move downward to abut the cable abutment joint, thereby preventing the cable from escaping from the threading hole (17).

8. The pre-buried wiring device for building construction according to claim 5, characterized in that: The reversing member (9) comprises a first rotating part (20) and a second rotating part (21), both of which comprise a fixed shaft (13), a disc (22) and a rotating plate being provided on the fixed shaft (13), a side wall groove (221) being provided on the side of the disc (22), a linkage block (23) being slidably connected to the side wall groove (221), and the limit block is linked to the rotating plate, a connecting rod (24) being provided on the linkage block (23), the connecting rod (24) passing through the arcuate through groove (25) of the upper cover (6) and being slidably engaged with the arcuate through groove (25), and an abutment member (26) being provided on the rotating plate corresponding to the cable inserted into the fixed end (2), the abutment member (26) being used to prevent the cable from being disengaged from the rotating plate, and then the rotating plate is driven to rotate by the connecting rod (24) to perform reversal of the cable.

9. The pre-buried wiring device for buildings according to claim 8, characterized in that: The abutment member (26) comprises a plurality of threading holes (17) on a rotating plate, at least two arc-shaped grooves (261) are provided on the inner wall of the outlet end of the threading hole (17), a telescopic spring (262) is fixedly arranged in the arc-shaped groove (261), and the other end of the telescopic spring (262) is connected to an abutment block (263), and the cross section of the abutment block (263) is a right-angled trapezoid.

10. The pre-buried wiring device for building construction according to claim 7 or 9, characterized in that: The protective shell (5) comprises a concave shell (51) and a removable cover plate (52) is provided on the upper end surface of the concave shell (51); a clamping block (53) is provided on both sides of the front end of the concave shell (51); and a first clamping groove (531) is provided on the clamping block (53); a placement groove (54) is extended from the rear end; vertical clamping grooves (541) are provided on both sides of the placement groove (54) corresponding to the clamping block (53); and the placement groove (54) corresponds to the first clamping groove. (531) is provided with a through hole (542) and the through hole (542) is slidably connected with a clamping block (53), a partition plate (55) with a rectangular cavity is fixedly provided in the middle of the rectangular shell, a concave plate (56) and a rectangular plate (57) are slidably connected in the rectangular cavity, the ends of the concave plate (56) and the rectangular plate (57) are both slidably connected with the side wall of the rectangular shell, and a clamping piece (58) is provided on the partition plate (55) and the concave shell (51).

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