Junction box

Abstract

The utility model discloses a junction box which comprises a box body, a plurality of wire holders are arranged in the box body, a wire pressing mechanism and an installation portion matched with the wire pressing mechanism are arranged in the box body, the wire pressing mechanism comprises a pressing piece and a locking piece, one end of the pressing piece is connected with the installation portion, and the other end of the pressing piece is connected with the locking piece. One end of the pressing piece is connected with the mounting part, the other end of the pressing piece is connected with the locking piece, the mounting part is provided with a wire passing groove corresponding to the pressing piece, a limiting hole for a cable to penetrate through is formed between the pressing piece and the wire passing groove, the locking piece is movably mounted on the mounting part, and the locking piece moves back and forth along the mounting part to press or loosen the cable. According to the wire pressing mechanism of the junction box, the wire pressing size can be adjusted according to different wiring numbers and wiring requirements of cables of different specifications, the universality is better, and labor is saved in adjustment.

Description

Technical Field

[0001] The present application relates to the technical field of cable branching, and more specifically to a branching box. Background Art

[0002] Cables are a general term for optical cables, electrical cables and other items. Cables need to be sorted when they are installed and arranged to change the original direction of the cables to achieve power or signal transmission. This process requires the use of junction boxes. Junction boxes are the terminals of distribution cables or optical cables. They connect distribution cables or optical cables and user lines and branch the main line. They play an important role. However, the existing cable junction boxes can accommodate a small number of cables. The cables cannot be restrained when passing through. The cables are arranged in a disorderly manner in the junction box, which greatly affects the branching effect of the junction box. When there are a large number of cables, it is easy to cause confusion in the arrangement, which seriously affects the safety of use. In view of the above problems, a utility model patent with publication number: CN214706997U discloses a computer network junction box, comprising a junction box body, a network wiring port, a wire pressing device, a mounting plate, a spring, a heat sink, a fan, and a network tap, wherein the mounting plate is located at the inner bottom side of the junction box body, a plurality of the springs are evenly mounted directly above the mounting plate, the network tap is mounted above a plurality of the springs, the heat sink is located directly above the network tap, the fan is mounted at the inner upper part of the junction box body, and the fan is located directly above the heat sink, a plurality of the network wiring ports are respectively located on the left and right sides of the junction box body, and a plurality of the network wiring ports are electrically connected to the junction box body, two wire pressing devices are mounted symmetrically on the left and right sides of the junction box body respectively; the wire pressing device comprises a connecting plate, a wire pressing groove, a sealing cover, and a locking device, and the connecting plate and the junction box body are connected. Fixed connection, several pressed wire troughs are evenly arranged above the connecting plate, several locking devices are installed above the connecting plate, and several locking devices correspond to the positions of several pressed wire troughs; in this technical scheme, pressed wire troughs and locking devices are set, and the locking device cooperates with the pressure plate and the locking nut to press and position the network cable to avoid pulling and falling and affecting the connection of the network, but the size of the pressed wire trough is fixed, and the locking device and the pressed wire trough can limit the cable model fixed, but there are many cable specifications and models currently in use, and the diameters of cables of different specifications and models are different. Therefore, the wire pressing device cannot adapt to different wiring quantities and wiring requirements of cables of different specifications, and its versatility is poor. On the other hand, when it is necessary to disassemble the wire pressing device, it is necessary to disassemble the locking nut and the pressure plate first. The locking nut and the pressure plate are independent components and are small in size and easy to lose, and the locking nut needs to be tightened in place when used, which is laborious and time-consuming to use. Utility Model Content

[0003] The technical problem to be solved by the present application is to provide a junction box, the wire crimping mechanism of which can adjust the wire crimping size according to the wiring requirements of different wiring quantities and cables of different specifications, with better versatility and less effort in adjustment.

[0004] The present application provides a junction box, comprising a box body, wherein a plurality of wiring seats are arranged in the box body, a wire pressing mechanism and a mounting portion adapted to the wire pressing mechanism are arranged in the box body, the wire pressing mechanism comprises a clamping member and a locking member, one end of the clamping member is connected to the mounting portion, and the other end of the clamping member is connected to the locking member, the mounting portion is provided with a wire passing groove corresponding to the clamping member, a limiting hole for the cable to pass through is formed between the clamping member and the wire passing groove, the locking member is movably installed on the mounting portion, and the locking member clamps or loosens the cable by moving back and forth along the mounting portion.

[0005] In the present technical scheme, a terminal block is arranged in the box body to connect and distribute the cables, and the box body is provided with a wire-passing hole for the cable to pass through. The cable passes through the wire-passing hole into the box body to connect to the terminal block to change the original direction, thereby realizing power or signal transmission. A wire pressing mechanism is arranged between the wire-passing hole and the terminal block, and a mounting portion for installing the wire pressing mechanism is arranged on the box body. The wire pressing mechanism constrains the cables, so that the cables are reasonably arranged in the box body, thereby improving the efficiency of wire distribution; the wire pressing mechanism is arranged to consist of a clamping member and a locking member, and the clamping member is used to clamp the cables. The mounting portion is provided with a wire-passing groove that cooperates with the clamping member, and a limiting hole is formed between the clamping member and the wire-passing groove. The cable passes through the limiting hole to connect to the terminal block, and the cable is constrained by the limiting hole. One end of the clamping member is connected to the mounting portion, and the other end of the clamping member is connected to the locking member. The locking member is movably matched with the mounting portion, and the locking member is subjected to force to drive the clamping member to move back and forth along the mounting portion. One end of the clamping member is limited on the mounting portion, and the other end can be moved along The mounting portion moves, so that the clamping piece can tighten or loosen the cable, that is, the size of the limiting hole can be adjusted. When the cable specification is small, after the cable passes through the limiting hole and connects to the terminal block, force is applied to the locking piece so that the locking piece drives the other end of the clamping piece to move along the mounting portion in a direction away from the wire groove, so that the clamping piece cooperates with the wire groove to reduce the size of the limiting hole, and the clamping piece can clamp the cable on the wire groove, thereby adapting to the use of cables with smaller specifications. When the cable specification is large, force is applied to the locking piece so that the locking piece drives the other end of the clamping piece to move along the mounting portion in a direction close to the wire groove, so that the clamping piece cooperates with the wire groove to increase the size of the limiting hole, and cables with larger specifications can pass through the limiting hole, and force is applied to the locking piece again so that the clamping piece clamps the cable on the wire groove, thereby adapting to the use of cables with larger specifications. The clamping mechanism has a simple structure, and in this solution, the size of the limiting hole can be adjusted by applying force to the locking piece, which has better versatility and saves effort in adjustment.

[0006] As an improvement, the locking member is provided with a transmission gear, and the mounting portion is provided with a rack meshing with the transmission gear, and the locking member is forced to drive the transmission gear to move along the rack to adjust the size of the limiting hole. In this technical solution, by arranging a transmission gear on the locking member and a rack on the mounting portion, the locking member is engaged with the rack through the transmission gear to be movably connected with the mounting portion, and the locking member is forced to rotate to drive the transmission gear to move along the rack, thereby driving the other end of the clamping member to slide back and forth relative to the mounting portion. The transmission efficiency of the transmission gear and the rack is high, and the transmission gear and the rack have a certain self-locking effect, which can prevent the clamping member from resetting and affecting the restraining effect on the cable. The locking member not only achieves the purpose of adjusting the size of the limiting hole but also achieves the locking effect during the rotation process, which is simpler and more reliable than the ordinary sliding and locking structure.

[0007] As an improvement, the mounting portion is provided with a first slide groove adapted to the transmission gear, the transmission gear is slidably matched with the first slide groove, and the transmission gear is located in the mounting portion through the upper and lower limits of the first slide groove. In this technical solution, by providing a first slide groove capable of accommodating the transmission gear on the mounting portion, the first slide groove is provided on the opposite side of the rack, so that the transmission gear can slide in the first slide groove without interference during the movement along the rack, the transmission efficiency is higher, and the transmission gear is limited by the upper and lower limits of the first slide groove, so that the locking member is limited on the mounting portion, and the assembly is simple and reliable.

[0008] As an improvement, the locking member is provided with a driving shaft, and the driving shaft is provided with an operating end. The driving shaft passes through the clamping member and is connected to the transmission gear. The driving shaft is limited on the clamping member through the operating end and the transmission gear. The driving shaft is forced to drive the transmission gear to move along the rack to adjust the size of the limiting hole. In this technical solution, a locking member is provided, which is composed of a driving shaft and a transmission gear. The locking member is connected to the other end of the clamping member through the driving shaft. The driving shaft passes through the clamping member and is connected to the transmission gear. The end of the driving shaft located above the clamping member serves as the operating end. The user can drive the driving shaft to rotate relative to the clamping member by applying force to the operating end, thereby driving the transmission gear to move along the rack. The end of the driving shaft away from the operating end is provided to pass through the clamping member and is connected to the transmission gear. The driving shaft cooperates with the transmission gear up and down through the operating end to be limited on the clamping member. This can avoid the locking member from being lost during the cable disassembly and assembly process, and is more reliable to use.

[0009] As an improvement, the other end of the clamping member is provided with a first through hole adapted to the drive shaft, and the drive shaft passes through the first through hole to connect to the transmission gear. In this technical solution, the locking member is connected to the other end of the clamping member through the drive shaft, and by providing a first through hole for the drive shaft to pass through at the other end of the clamping member, the end of the drive shaft away from the operating end can pass through the first through hole and the transmission gear, and the drive shaft is limited by the transmission gear, and the assembly structure is simple and reliable.

[0010] As an improvement, the first through hole includes a first straight line segment, a first arc segment, and a second straight line segment that are sequentially joined. In the technical solution, the first through hole is formed by sequentially joining a first straight line segment, a first arc segment, and a second straight line segment. The first through hole is an irregular shape. The first through hole abuts against the rod portion of the drive shaft through the first arc segment. The first through hole reduces the contact area with the rod portion of the drive shaft through the first straight line segment and the second straight line segment, so that the axis of the transmission gear will not move during the rotation of the drive shaft, thereby achieving a good stabilizing effect and improving the transmission efficiency.

[0011] As an improvement, the driving shaft is a bolt structure. In this technical solution, the driving shaft is set as a bolt structure, and the operating end of the driving shaft is the head of the bolt. The user can rotate the driving shaft by acting on the head of the bolt with a screwdriver of a corresponding model, thereby adjusting the size of the limit hole, which is labor-saving and convenient to use, and has better versatility.

[0012] As an improvement, the mounting portion is provided with a second slide groove adapted to the drive shaft, and the bottom end of the drive shaft is slidably matched with the second slide groove. In this technical solution, the end of the drive shaft away from the operating end is the bottom end, and the bottom end passes through the first through hole and the transmission gear in sequence and is accommodated in the mounting portion. By providing a second slide groove capable of accommodating the bottom end on the mounting portion, the bottom end of the drive shaft is slidably matched with the second slide groove during movement, thereby improving the movement efficiency of the drive shaft and making the clamping mechanism more labor-saving and reliable to use.

[0013] As an improvement, a fastener is provided between one end of the clamping member and the mounting portion, and one end of the clamping member is fixed on the mounting portion by the fastener. In this technical solution, one end of the clamping member is connected to the mounting portion as a fixed point of the clamping member, and a fastener is provided between the clamping member and the mounting portion, and one end of the clamping member is fixed on the mounting portion by the fastener. The fastener is preferably a bolt, and the assembly structure is simple and reliable.

[0014] As an improvement, one end of the clamping member is provided with a second through hole adapted to the fastener, the mounting portion is provided with a threaded hole adapted to the fastener, and the fastener passes through the second through hole to connect with the threaded hole to limit one end of the clamping member to the mounting portion. In this technical solution, by providing a second through hole at the end where the clamping member is connected to the mounting portion, and providing a threaded hole on the mounting portion, the fastener passes through the second through hole and is threadedly connected to the threaded hole to achieve fixation, and the threaded fixing structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a junction box of the present application.

[0016] Figure 2 This is a partial structural schematic diagram of a junction box of the present application.

[0017] Figure 3 For this application Figure 2 Exploded view of the structure shown.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the installation part in this application.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping member in this application.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking member in this application.

[0021] As shown in the figure: 1. Box body; 11. Wire hole; 2. Terminal block; 3. Wire pressing mechanism; 31. Pressing member; 311. First through hole; 3111. First straight line segment; 3112. First arc segment; 3113. Second straight line segment; 312. Second through hole; 32. Locking member; 321. Transmission gear; 322. Drive shaft; 3221. Operating end; 4. Mounting part; 41. Wire groove; 42. Rack; 43. First slide groove; 44. Second slide groove; 45. Threaded hole; 5. Limit hole; 6. Fastener. DETAILED DESCRIPTION

[0022] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0023] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0024] It should also be understood that the terms “comprises,” “including,” “has,” “contains,” and “comprising,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0025] like Figures 1 to 6As shown, the present application discloses a junction box, including a box body 1, a plurality of wiring seats 2 are arranged in the box body 1, a wire pressing mechanism 3 and a mounting portion 4 adapted to the wire pressing mechanism 3 are arranged in the box body 1, the wiring seat 2 is arranged in the box body 1 to connect and distribute the cables, the box body 1 is provided with a wire through hole 11 for the cable to pass through, the cable passes through the wire through hole 11 into the box body 1 to connect the wiring seat 2 to change the original direction, thereby realizing power or signal transmission, by arranging the wire pressing mechanism 3 between the wire through hole 11 and the wiring seat 2, and arranging the mounting portion 4 for installing the wire pressing mechanism 3 on the box body 1, the wire pressing mechanism 3 constrains the cables, so that the cables are reasonably arranged in the box body 1, and the wiring efficiency is improved;

[0026] The wire pressing mechanism 3 includes a pressing member 31 and a locking member 32. One end of the pressing member 31 is connected to the mounting portion 4, and the other end of the pressing member 31 is connected to the locking member 32. The mounting portion 4 is provided with a wire groove 41 corresponding to the pressing member 31. A limiting hole 5 for the cable to pass through is formed between the pressing member 31 and the wire groove 41. The wire pressing mechanism 3 is composed of a pressing member 31 and a locking member 32. The pressing member 31 is used to press the cable. The mounting portion 4 is provided with a wire groove 41 that cooperates with the pressing member 31. A limiting hole 5 is formed between the pressing member 31 and the wire groove 41. The cable passes through the limiting hole 5 to connect the wiring seat 2. The cable is constrained by the limiting hole 5. The locking member 32 is movably installed on the mounting portion 4. The locking member 32 moves back and forth along the mounting portion 4 to compress or loosen the cable. One end of the pressing member 31 is connected to the mounting portion 4, and the other end of the pressing member 31 is connected to the locking member 32. The locking member 32 is movably matched with the mounting portion 4. The locking member 32 is subjected to force to drive the pressing member 31 to move back and forth along the mounting portion 4. One end of the pressing member 31 is limited on the mounting portion 4, and the other end can move along the mounting portion, so that the pressing member 31 compresses or loosens the cable, that is, the size of the limiting hole 5 can be adjusted;

[0027] When the cable specification is small, after the cable passes through the limiting hole 5 and connects to the terminal block 2, force is applied to the locking piece 32, so that the locking piece 32 drives the other end of the clamping piece 31 to move along the mounting portion 4 in a direction away from the wire groove 41, so that the clamping piece 31 cooperates with the wire groove 41 to reduce the size of the limiting hole 5, and the clamping piece 31 can clamp the cable on the wire groove 41, thereby adapting to the use of cables with smaller specifications. When the cable specification is large, force is applied to the locking piece 32, so that the locking piece 32 drives the other end of the clamping piece 31 along the mounting portion 4 toward the wire groove. The movement in the direction of 41 makes the clamping piece 31 cooperate with the wire groove 41 to increase the size of the limiting hole 5, so that cables with larger specifications can pass through the limiting hole 5, and then force is applied to the locking piece 32 to make the clamping piece 31 clamp the cable on the wire groove 41, so as to adapt to the use of cables with larger specifications. The clamping mechanism has a simple structure, and in this solution, the size of the limiting hole 5 can be adjusted by applying force to the locking piece 32, which has better versatility and saves effort in adjustment. It should be noted that the mounting portion 4 in the present application can be a separate component or an integrated structure with the box body 1, and there is no limitation on this.

[0028] More specifically, Figure 2 and Figure 3 The locking member 32 is provided with a transmission gear 321, and the mounting portion 4 is provided with a rack 42 meshing with the transmission gear 321. The locking member 32 is driven by the force to drive the transmission gear 321 to move along the rack 42 to adjust the size of the limiting hole 5. By arranging the transmission gear 321 on the locking member 32 and the rack 42 on the mounting portion 4, the locking member 32 is meshed with the rack 42 through the transmission gear 321 to be movably connected with the mounting portion 4. The locking member 32 is forced to rotate to drive the transmission gear 321 to move along the rack 42, thereby driving the other end of the pressing member 31 to slide back and forth relative to the mounting portion 4. The transmission gear 321 and the rack 42 have a high transmission efficiency, and the transmission gear 321 and the rack 42 have a certain self-locking effect, which can prevent the pressing member 31 from resetting and affecting the restraining effect on the cable. The locking member 32 not only achieves the purpose of adjusting the size of the limiting hole 5 but also achieves the locking effect synchronously during the rotation process. Compared with the ordinary sliding and locking structure, it is simpler and more reliable.

[0029] More specifically, Figure 3 and Figure 4As shown, the mounting portion 4 is provided with a first slide groove 43 adapted to the transmission gear 321, and the transmission gear 321 is slidably matched with the first slide groove 43. The transmission gear 321 is located in the mounting portion 4 through the upper and lower limits of the first slide groove 43. By arranging the first slide groove 43 capable of accommodating the transmission gear 321 on the mounting portion 4, the first slide groove 43 is arranged on the opposite side of the rack 42, so that the transmission gear 321 can slide in the first slide groove 43 without interference during the movement along the rack 42, and the transmission efficiency is higher. The transmission gear 321 is limited by the upper and lower limits of the first slide groove 43, so that the locking member 32 is limited on the mounting portion 4, and the assembly is simple and reliable.

[0030] More specifically, Figures 2 to 6 As shown, the locking member 32 is provided with a driving shaft 322, and the driving shaft 322 is provided with an operating end 3221. The driving shaft 322 passes through the clamping member 31 and is connected to the transmission gear 321. The driving shaft 322 is limited on the clamping member 31 by cooperating with the transmission gear 321 through the operating end 3221. The driving shaft 322 is subjected to force to drive the transmission gear 321 to move along the rack 42 to adjust the size of the limiting hole 5. In the present technical solution, a locking member 32 is provided which is composed of a driving shaft 322 and a transmission gear 321. The locking member 32 is connected to the other end of the clamping member 31 through the driving shaft 322. The driving shaft 322 passes through the clamping member 31 to connect the transmission gear 321. The end of the driving shaft 322 located above the clamping member 31 serves as an operating end 3221. The user can drive the driving shaft 322 to rotate relative to the clamping member 31 by applying force to the operating end 3221, thereby driving the transmission gear 321 to move along the rack 42. The end of the driving shaft 322 away from the operating end 3221 is provided to pass through the clamping member 31 to connect the transmission gear 321. The driving shaft 322 cooperates with the transmission gear 321 up and down through the operating end 3221 to be limited on the clamping member 31, which can avoid the locking member 32 from being lost during the cable disassembly and assembly process, and is more reliable to use.

[0031] More specifically, Figures 2 to 6 As shown, the other end of the clamping member 31 is provided with a first through hole 311 adapted to the driving shaft 322, the driving shaft 322 passes through the first through hole 311 to connect to the transmission gear 321, and the locking member 32 is connected to the other end of the clamping member 31 through the driving shaft 322. By providing the first through hole 311 for the driving shaft 322 to pass through at the other end of the clamping member 31, the end of the driving shaft 322 away from the operating end 3221 can pass through the first through hole 311 and the transmission gear 321, and the driving shaft 322 is limited by the transmission gear 321, and the assembly structure is simple and reliable; more specifically, the clamping member in this embodiment is made of plastic rubber material and is integrally formed.

[0032] More specifically, Figure 5As shown, the first through hole 311 includes a first straight segment 3111, a first arc segment 3112 and a second straight segment 3113 which are connected in sequence. The first through hole 311 is formed by the first straight segment 3111, the first arc segment 3112 and the second straight segment 3113 which are connected in sequence. The first through hole 311 is an irregular shape. The first through hole 311 abuts against the rod portion of the driving shaft 322 through the first arc segment 3112. The first through hole 311 reduces the contact area with the rod portion of the driving shaft 322 through the first straight segment 3111 and the second straight segment 3113, so that the axis center of the transmission gear 321 will not move during the rotation of the driving shaft 322, thereby achieving a good stabilizing effect and improving the transmission efficiency.

[0033] More specifically, Figure 3 and Figure 6 As shown, the drive shaft 322 is a bolt structure. The drive shaft 322 is set as a bolt structure. The operating end 3221 of the drive shaft 322 is the head of the bolt. The user can rotate the drive shaft 322 by acting on the head of the bolt with a screwdriver of a corresponding model, thereby adjusting the size of the limit hole 5. It is labor-saving and convenient to use, and has better versatility.

[0034] More specifically, Figures 2 to 6 As shown, the mounting portion 4 is provided with a second slide groove 44 adapted to the drive shaft 322, and the bottom end of the drive shaft 322 is slidably matched with the second slide groove 44. The end of the drive shaft 322 away from the operating end 3221 is the bottom end, and the bottom end passes through the first through hole 311 and the transmission gear 321 in sequence and is accommodated in the mounting portion 4. By providing the second slide groove 44 capable of accommodating the bottom end on the mounting portion 4, the bottom end of the drive shaft 322 is slidably matched with the second slide groove 44 during the movement, thereby improving the movement efficiency of the drive shaft 322 and making the clamping mechanism more labor-saving and reliable to use.

[0035] More specifically, Figures 2 to 6 As shown, a fastener 6 is provided between one end of the clamping member 31 and the mounting portion 4, and one end of the clamping member 31 is limited on the mounting portion 4 by the fastener 6. One end of the clamping member 31 is connected to the mounting portion 4 to serve as a fixed point of the clamping member 31. By arranging the fastener 6 between the clamping member 31 and the mounting portion 4, one end of the clamping member 31 is limited on the mounting portion 4 by the fastener 6. The fastener 6 is preferably a bolt, and the assembly structure is simple and reliable.

[0036] More specifically, Figures 2 to 6As shown, one end of the clamping member 31 is provided with a second through hole 312 adapted to the fastener 6, and the mounting portion 4 is provided with a threaded hole 45 adapted to the fastener 6. The fastener 6 passes through the second through hole 312 and connects with the threaded hole 45 to limit one end of the clamping member 31 to the mounting portion 4. By providing a second through hole 312 at the end where the clamping member 31 is connected to the mounting portion 4, and providing a threaded hole 45 on the mounting portion 4, the fastener 6 passes through the second through hole 312 and is threadedly connected with the threaded hole 45 to achieve fixation. The threaded fixing structure is simple and reliable.

[0037] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A junction box, comprising a box body (1), wherein a plurality of wiring sockets (2) are arranged in the box body (1), characterized in that: The box body (1) is provided with a wire pressing mechanism (3) and a mounting portion (4) adapted to the wire pressing mechanism (3). The wire pressing mechanism (3) comprises a pressing member (31) and a locking member (32). One end of the pressing member (31) is connected to the mounting portion (4), and the other end of the pressing member (31) is connected to the locking member (32). The mounting portion (4) is provided with a wire passing groove (41) corresponding to the pressing member (31). A limiting hole (5) for passing a cable is formed between the pressing member (31) and the wire passing groove (41). The locking member (32) is movably mounted on the mounting portion (4). The locking member (32) moves back and forth along the mounting portion (4) to press or loosen the cable.

2. A junction box according to claim 1, characterized in that: The locking member (32) is provided with a transmission gear (321), and the mounting portion (4) is provided with a rack (42) meshing with the transmission gear (321); the locking member (32) is subjected to force to drive the transmission gear (321) to move along the rack (42) to adjust the size of the limiting hole (5).

3. A junction box according to claim 2, characterized in that: The mounting portion (4) is provided with a first sliding groove (43) adapted to the transmission gear (321), the transmission gear (321) is slidably matched with the first sliding groove (43), and the transmission gear (321) is located in the mounting portion (4) through the upper and lower limits of the first sliding groove (43).

4. A junction box according to claim 2, characterized in that: The locking member (32) is provided with a driving shaft (322), and the driving shaft (322) is provided with an operating end (3221). The driving shaft (322) passes through the clamping member (31) and is connected to the transmission gear (321). The driving shaft (322) is limited on the clamping member (31) by cooperating with the transmission gear (321) through the operating end (3221). The driving shaft (322) is subjected to force to drive the transmission gear (321) to move along the rack (42) to adjust the size of the limiting hole (5).

5. A junction box according to claim 4, characterized in that: The other end of the pressing member (31) is provided with a first through hole (311) adapted to the driving shaft (322), and the driving shaft (322) passes through the first through hole (311) to connect with the transmission gear (321).

6. A junction box according to claim 5, characterized in that: The first through hole (311) comprises a first straight line segment (3111), a first arc segment (3112) and a second straight line segment (3113) which are connected in sequence.

7. A junction box according to claim 4, characterized in that: The driving shaft (322) is a bolt structure.

8. A junction box according to claim 4, characterized in that: The mounting portion (4) is provided with a second sliding groove (44) adapted to the driving shaft (322), and the bottom end of the driving shaft (322) is slidably matched with the second sliding groove (44).

9. A junction box according to claim 1, characterized in that: A fastener (6) is provided between one end of the pressing member (31) and the mounting portion (4), and one end of the pressing member (31) is restricted on the mounting portion (4) by the fastener (6).

10. A junction box according to claim 9, characterized in that: One end of the clamping member (31) is provided with a second through hole (312) adapted to the fastener (6), and the mounting portion (4) is provided with a threaded hole (45) adapted to the fastener (6). The fastener (6) passes through the second through hole (312) and connects to the threaded hole (45) to limit one end of the clamping member (31) to the mounting portion (4).

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