A retractable junction box

Abstract

The present invention discloses a retractable junction box, comprising: a housing, and a wiring seat arranged in the housing, wherein one end of the housing is provided with a housing wiring window and a wire pressing seat slidably sleeved thereon, and the specific arrangement is as follows: the housing is provided with guide locking posts on its top and bottom surfaces, the wire pressing seat is provided with sliding guide grooves corresponding to the guide locking posts, the guide locking posts are movably arranged in the corresponding sliding guide grooves, the top surface of the housing and the bottom wall of the wire pressing seat are respectively provided with positioning ribs, and the top wall of the wire pressing seat and the bottom wall of the housing are respectively provided with at least two positioning slots corresponding to the corresponding positioning ribs; the wire pressing seat is provided with a corresponding wire pressing seat wiring window, a flip-up wire pressing cover is rotatably provided on the wire pressing seat, and the wire pressing cover and the wire pressing seat are provided with wire clamping grooves corresponding to the wiring seat at the corresponding ends, i.e., the opening and closing ends. The retractable junction box of the present invention can be widely used as various power supply junction boxes.

Description

Technical Field

[0001] The present invention relates to a junction box for power switching, in particular to a retractable junction box. Background Art

[0002] As is well known, when connecting sheathed wires to the terminal block in a junction box, operators typically pinch the stripped wire, getting as close to the end (the exposed core wire) as possible, and inserting it straight into the terminal block's wiring hole. However, the terminal block in traditional junction boxes is far from the edge of the crimping block, making it difficult to insert the wire straight into the hole. Furthermore, with increasing safety awareness, junction boxes equipped with terminal blocks are required to pass inspection in a specified environment with metal particles. Due to gaps in the terminal block housing and the open terminal holes, traditional junction boxes lack dust protection, posing a safety hazard to the entire junction box. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a retractable junction box which can straightly insert a wire end into a wiring hole of a wiring seat.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a retractable junction box, comprising: a shell, and a wiring seat arranged in the shell, one end of the shell is open upward to form a shell wiring window, and the shell is slidably sleeved with a wire pressing seat on the end of the shell wiring window, that is, the wiring terminal, and the specific setting method is: the shell is respectively provided with at least one guide anti-separation column on its top surface and bottom surface, the wire pressing seat is provided with a sliding guide groove corresponding to each guide anti-separation column, the guide anti-separation column is movably arranged in the corresponding sliding guide groove on the wire pressing seat, the shell is provided with a top positioning rib on its top surface, and the wire pressing seat is provided with at least two corresponding guide anti-separation columns on its top wall. The top positioning rib corresponds to the top positioning groove, the wire pressing seat is provided with a bottom positioning rib on the inner surface of its bottom wall, and the shell is provided with at least two bottom positioning grooves corresponding to the bottom positioning rib on its bottom wall, and the top positioning rib and the bottom positioning rib are on the downstream side of the retraction direction of the wire pressing seat as guide slopes inclined from top to bottom toward the retraction direction of the wire pressing seat; the wire pressing seat is provided with a wire pressing seat wiring window that cooperates with the shell wiring window on the shell, and the wire pressing seat is rotatably provided with a flip-up wire pressing cover that can cover the wire pressing seat wiring window, and the wire pressing cover and the wire pressing seat are provided with wire clamping grooves corresponding to the wiring seat at the corresponding ends, i.e., the opening and closing ends.

[0005] As a preferred solution, in the retractable junction box, a dust cover is provided on the junction seat.

[0006] As a preferred solution, in the retractable junction box, a printed circuit board is provided in the housing, and the junction block is provided on the printed circuit board.

[0007] As a preferred embodiment, in the retractable junction box, at least one toggle switch is further provided on the printed circuit board, and correspondingly, a toggle rod placement hole corresponding to the toggle rod of the toggle switch is provided on the top wall of the shell, and a sealing gasket is provided on the back side of the top wall of the shell, and a toggle rod through-hole corresponding to the toggle rod placement hole is provided on the sealing gasket. After the toggle handle is sleeved on the toggle rod of the toggle switch, the toggle handle passes through the toggle rod through-hole of the sealing gasket and extends into the toggle rod placement hole of the shell, so that the corresponding surface of the toggle handle is tightly attached to the sealing gasket to form a seal.

[0008] As a preferred embodiment, in the retractable junction box, the specific arrangement of the wire pressing cover is as follows: the wire pressing seat is provided with at least two arc-shaped support portions bent in the retraction direction of the wire pressing seat, and the wire pressing cover is provided with a flip support hole corresponding to the arc-shaped support portion on its corresponding end, i.e., its flip support end, and the flip support hole on the wire pressing cover is movably sleeved on the corresponding arc-shaped support portion on the wire pressing seat.

[0009] The wire pressing cover is provided with plate-shaped locking parts on both sides of its other end, i.e., its opening and closing end, and the inner side of the plate-shaped locking part is provided with a cover locking rib, and the wire pressing seat is provided with a seat locking rib that cooperates with the cover locking rib on the plate-shaped locking part.

[0010] As a preferred solution, in the retractable junction box, a bent portion is provided outwardly at the lower end of the plate-shaped locking portion.

[0011] As a preferred embodiment, in the retractable junction box, the shell includes: a shell with an open bottom, and a bottom cover arranged at the bottom of the shell. The specific arrangement is: a snap-fitting boss is provided on the outer walls of the two side edges of the bottom cover, and a snap-fitting groove corresponding to the snap-fitting boss is provided on the inner walls of the two side edges of the shell. When snapping, the snap-fitting groove on the shell is snapped onto the snap-fitting boss on the bottom cover.

[0012] As a preferred solution, in the retractable junction box, the printed circuit board is arranged on the bottom cover, and the specific arrangement is as follows: a positioning pad column is provided on the bottom cover, and the positioning pad column includes: a pad column, a positioning pad arranged on the pad column, and a rest step is formed between the positioning pad column and the pad column. At least one positioning clamping boss is provided on the inner wall of one side edge of the bottom cover, and the lower edge of the positioning clamping boss corresponds to the rest step on the positioning pad column. A positioning placement hole corresponding to the positioning post is provided on the printed circuit board, and a plurality of supporting feet and positioning clamping feet that cooperate with the positioning clamping boss are provided on the back of the printed circuit board. The positioning placement hole on the printed circuit board is sleeved on the positioning post, so that the printed circuit board is rested on the rest step on the positioning pad column, the supporting feet are resting on the bottom cover, and the positioning clamping feet are clamped under the corresponding positioning clamping boss.

[0013] As a preferred solution, in the retractable junction box, the wire pressing seat is provided with a locking through hole in the center of the opening and closing end, and the wire pressing cover is provided with a locking column corresponding to the locking through hole on the wire pressing seat, and a locking hole is provided on the locking column. A screw is selected to pass through the locking through hole on the wire pressing seat and is set in the locking hole on the locking column.

[0014] The beneficial effects of the present invention are:

[0015] 1. The present invention provides positioning ribs and at least one guide anti-slip column on the top and bottom surfaces of the shell, respectively, and provides a sliding guide groove corresponding to each guide anti-slip column and at least two equally spaced positioning card slots corresponding to each positioning rib on the wire pressing seat, so that the wire pressing seat can slide on the shell and stop at multiple different positions through the cooperation of the positioning rib and the positioning card slot. In this way, the wire pressing seat can be retracted during wiring, so that the operator can pinch the wire with the sheath stripped off and insert the wire end of the wire straightly into the wiring hole of the wiring seat. After connection, the wire pressing seat is extended so that the wire pressing cover and the wire card slot on the wire pressing seat are pressed on the sheath.

[0016] 2. The present invention effectively improves the dustproof level by providing a dustproof cover on the terminal block, thereby being able to pass more stringent inspections.

[0017] 3. The housing of the present invention provides a sealing gasket on the back side of the top wall of the lever on which the toggle lever is installed, so that the corresponding surface of the lever and the sealing gasket are tightly attached to form a seal, thereby effectively improving the dustproof level and thus being able to pass more stringent inspections.

[0018] 4. The mounting structure of the printed circuit board of the present invention makes the installation of the printed circuit board very simple and convenient, and eliminates the need for screw fixation, thereby greatly improving the installation efficiency.

[0019] 5. The present invention provides plate-shaped locking parts on both sides of the opening and closing ends of the wire crimping cover, provides cover locking ribs on the inner side of the plate-shaped locking parts, and provides seat locking ribs on the wire crimping seat, so that the wire crimping cover can be locked on the wire crimping seat when the cover is closed.

[0020] 6. The present invention is provided with a bent portion outward at the lower end of the plate-shaped locking portion, so that when opening the box, the operator can easily push the plate-shaped locking portions on both sides of the wire-pressing cover outward by pressing the bent portion, so that the cover locking ribs on the wire-pressing cover are separated from the seat locking ribs on the wire-pressing seat. At this time, the wire-pressing cover can be opened by flipping it over, which is very convenient to operate.

[0021] 7. The present invention provides a locking through hole on the wire pressing seat, a locking column on the wire pressing cover, and a locking hole on the locking column. After the wire pressing cover is closed, a screw can be selected to pass through the locking through hole on the wire pressing seat and tightened into the locking hole on the locking column. In this way, the junction box cannot be opened without tools, making the junction box safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the retractable junction box of the present invention when it is extended.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the retractable junction box of the present invention when it is retracted.

[0024] Figure 3 and Figure 4 Schematic diagram of the partial structure of the retractable junction box of the present invention from two perspectives.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the retractable junction box of the present invention being extended and opened.

[0026] Figure 6 and Figure 7 Schematic diagram of the exploded structure of the retractable junction box of the present invention from two perspectives.

[0027] Figure 8 yes Figure 6 Schematic diagram of the enlarged structure of part B.

[0028] Figures 1 to 8The reference numerals in the figure are: 1. Wire pressing cover, 105. Flip support hole, 107. Upper wire clamping groove, 11. Plate-shaped locking portion, 110. Cover locking rib, 111. Bending portion, 18. Locking column, 2. Housing, 201. Snap-fit ​​groove, 207. Lever placement hole, 21. Top guide anti-slip column, 211. Chamfer, 23. Top positioning rib, 230. Vertical positioning surface, 231. Guide slope, 3. Wire pressing seat, 301. Top sliding guide groove, 302. Bottom sliding guide groove, 303. Top positioning slot, 307. Lower wire clamping slot, 308. Lock Fixed through hole, 310, seat locking rib, 34, bottom positioning rib, 35, arc-shaped support part, 40, printed circuit board, 409, positioning hole, 45, positioning foot, 46, support pad, 47, toggle switch, 48, terminal block, 57, dial handle, 571, upper mounting surface, 58, dust cover, 7, foam, 707, dial lever through hole, 8, self-tapping screw, 9, bottom cover, 904, bottom positioning slot, 91, snap-fit ​​boss, 911, bottom cover guide slope, 92, bottom guide anti-slip column, 94, pad column, 941, positioning column, 95, positioning snap-fit ​​boss. DETAILED DESCRIPTION

[0029] The following describes in detail an implementation scheme of a retractable junction box according to the present invention in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7As shown, a retractable junction box according to the present invention comprises: a shell and a terminal block 48 provided in the shell, the shell comprising: a shell 2 with an open bottom, and a bottom cover 9 provided at the bottom of the shell 2, wherein the specific arrangement is as follows: a clamping boss 91 is provided on the outer wall of the two side edges of the bottom cover 9, and a bottom cover guide slope 911 is provided on the upper side of the clamping boss 91, and a clamping groove 201 corresponding to the clamping boss 91 is provided on the inner wall of the two side edges of the shell 2. When clamped, the clamping groove 201 on the shell 2 is clamped on the clamping boss 91 on the bottom cover 9; the terminal block 48 is provided on the bottom cover 9 through the printed circuit board 40, that is, the terminal block 48 is provided on the printed circuit board On the board 40, the printed circuit board 40 is set on the bottom cover 9, and the specific setting method is: the bottom cover 9 is provided with a positioning pad column, the positioning pad column includes: a pad column 94, a positioning column 941 provided on the pad column 94, a shelf step is formed between the positioning column 941 and the pad column 94, and two positioning clamping bosses 95 are provided on the inner wall of one side of the bottom cover 9, and the lower edge of the positioning clamping boss 95 corresponds to the shelf step on the positioning pad column (belonging to the conventional technology in this field and will not be described here), the printed circuit board 40 is provided with a positioning hole 409 corresponding to the positioning column 941, and the back of the printed circuit board 40 is provided with three supporting feet 46, and The positioning card foot 45 cooperates with the positioning card boss 95, and the positioning placement hole 409 on the printed circuit board 40 is sleeved on the positioning column 941, so that the printed circuit board 40 is placed on the placement step on the positioning pad column, the supporting pad 46 is against the bottom cover 9, and the positioning card foot 45 is clamped under the corresponding positioning card boss 95; a dust cover 58 is provided on the wiring seat 48; the printed circuit board 40 is also provided with two toggle switches 47, corresponding to which, a lever placement hole 207 corresponding to the toggle switch 47 is opened on the top wall of the shell 2, and the shell 2 is provided with a foam 7 as a sealing gasket on the back of its top wall, and a hole corresponding to the lever placement hole 207 is opened on the foam 7 The lever through hole 707, the lever of the toggle switch 47 is sleeved with a toggle handle 57, which passes through the lever through hole 707 of the foam 7 and extends into the lever placement hole 207 of the shell 2, so that the upper mounting surface 571 on the toggle handle 57 is tightly attached to the foam 7 to form a seal; one end of the shell 2 is open upward to form a shell wiring window, and the shell is slidably sleeved with a wire pressing seat 3 on the end of the shell wiring window, i.e., the wiring terminal. The specific setting method is: the top surface of the shell, i.e., the top surface of the shell 2, is provided with a pair of top guide anti-separation columns 21, and a top positioning rib 23 centrally arranged between the pair of top guide anti-separation columns 21, and the top positioning rib 23 is on the downstream side of the retraction direction of the wire pressing seat 3 ( Figure 8The left side of the figure) is a guide slope 231 inclined from top to bottom toward the retraction direction of the wire pressing seat 3, and the other side of the top positioning rib 23 is a vertical positioning surface 230 (see Figure 8 As shown); a top sliding guide groove 301 corresponding to each top guide anti-slip column 21 and three top positioning card grooves 303 arranged at equal intervals corresponding to each top positioning rib 23 are provided on the top wall of the wire pressing seat 3, the top guide anti-slip column 21 is slidably set in the corresponding top sliding guide groove 301 on the wire pressing seat 3, and a pair of bottom guide anti-slip columns 92 are provided on the bottom surface of the shell, that is, the bottom surface of the bottom cover 9, and a pair of bottom sliding guide grooves 302 corresponding to the bottom guide anti-slip columns 92 are provided on the bottom wall of the wire pressing seat 3, and a bottom positioning rib 34 is provided on the inner surface of the bottom wall of the wire pressing seat 3 (its structure is shown in FIG. Figure 8 The top positioning rib 23 shown in the figure) is provided with three bottom positioning slots 904 arranged at equal intervals on the bottom wall of the bottom cover 9; the bottom guide anti-slip column 92 is slidably arranged in the corresponding bottom sliding guide groove 302 on the wire pressing seat 3; the wire pressing seat 3 is provided with a wire pressing seat wiring window that cooperates with the shell wiring window on the shell 2 (which belongs to the conventional technology in this field and is not described in detail here), and a flip-type wire pressing cover 1 that can cover the wire pressing seat wiring window is rotatably provided on the wire pressing seat 3. The specific setting method is: the wire pressing seat 3 is provided with three arc-shaped supporting parts 35 that are bent in the retraction direction of the wire pressing seat 3, and the wire pressing cover 1 is provided with a flip supporting hole 105 corresponding to the arc supporting part 35 on its corresponding end, that is, its flip supporting end. The rotating support hole 105 is movably sleeved on the corresponding arc-shaped support portion 35 on the wire pressing seat 3; the wire pressing cover 1 is respectively provided with plate-shaped locking portions 11 on both sides of its other end, i.e., its opening and closing end, and four cover locking ribs 110 are provided on the inner side of the plate-shaped locking portion 11. The wire pressing seat 3 is provided with five seat locking ribs 310 that cooperate with the cover locking ribs 110 on the plate-shaped locking portion 11; the lower end of the plate-shaped locking portion 11 is provided with a bending portion 111 outwardly; the wire pressing seat 3 is provided with a lower wire clamping groove 307 corresponding to the wiring seat 48 on the corresponding end, i.e., the opening and closing end, and the wire pressing cover 1 is provided with an upper wire clamping groove 107 corresponding to the wiring seat 48 on the corresponding end, i.e., the opening and closing end. When the wire pressing cover 1 is closed, the upper wire clamping groove 107 and the lower wire clamping groove 307 are matched to form a wire clamping mouth.

[0031] In actual application, the wire pressing seat 3 is provided with a locking through hole 308 in the center of its opening and closing end, and the wire pressing cover 1 is provided with a locking column 18 corresponding to the locking through hole 308 on the wire pressing seat 3, and the locking column 18 is provided with a locking hole (which belongs to the conventional technology in this field and will not be described in detail here). The top guide anti-slip column 21 is provided with a chamfer 211 on the downstream side of the extension direction of the wire pressing seat 3 (see Figure 8As shown), the bottom guide anti-slip column 92 is provided with a chamfer on the downstream side of the extension direction of the wire pressing seat 3 (see Figure 8 The chamfer 211 on the middle top guide anti-slip column 21); the wire pressing cover 1, shell 2, wire pressing seat 3 and bottom cover 9 are all plastic parts.

[0032] The working process of the present invention is as follows: when opening the cover, the operator presses the bending part 111 on the corresponding side of the wire pressing cover 1 with both hands, and pulls the plate-shaped locking parts 11 on both sides of the wire pressing cover 1 outward, so that the cover locking rib 110 on the wire pressing cover 1 is separated from the seat locking rib 310 on the wire pressing seat 3, and at the same time flips the wire pressing cover 1 to open the wire pressing cover 1. When wiring, the position of the wire pressing seat 3 can be adjusted according to the length of the wiring terminal of the wire, and then the top positioning rib 23 and the top positioning rib 310 are used to adjust the position of the wire pressing seat 3. The slot 303, the bottom positioning rib 34 and the bottom positioning slot 904 cooperate to lock the wire pressing seat 3 on the shell 2 and the bottom cover 9; after connecting the wires, the wire pressing cover 1 is directly turned over and pressed down so that the cover locking rib 110 on the wire pressing cover 1 falls into the gap between the seat locking rib 310 on the wire pressing seat 3; then, a self-tapping screw 8 can be selected to pass through the locking through hole 308 on the wire pressing seat 3 and tightened into the locking hole of the locking column 18 on the wire pressing cover 1.

[0033] In summary, the above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A retractable junction box, comprising: The shell and the wiring seat arranged in the shell are characterized in that one end of the shell is open upward to form a shell wiring window, and the shell is slidably sleeved with a wire pressing seat on the end of the shell wiring window, that is, the wiring terminal, and the specific arrangement is as follows: the shell is respectively provided with at least one guide anti-slip column on its top surface and bottom surface, the wire pressing seat is provided with a sliding guide groove corresponding to each guide anti-slip column, and the guide anti-slip column is movably arranged in the corresponding sliding guide groove on the wire pressing seat, the shell is provided with a top positioning rib on its top surface, and the wire pressing seat is provided with at least two top positioning card grooves corresponding to the top positioning rib on its top wall, and the wire pressing seat is provided with a bottom positioning rib on the inner surface of its bottom wall, and the shell is provided with at least two bottom positioning card grooves corresponding to the bottom positioning rib on its bottom wall, and the top positioning rib and the bottom positioning rib are arranged on the bottom wall. The rib is a guide slope inclined from top to bottom toward the retraction direction of the wire pressing seat on the downstream side of the retraction direction of the wire pressing seat; the wire pressing seat is provided with a wire pressing seat wiring window that cooperates with the shell wiring window on the shell, and the wire pressing seat is rotatably provided with a flip-up wire pressing cover that can cover the wire pressing seat wiring window, and the wire pressing cover and the wire pressing seat are provided with a wire clamping groove corresponding to the wiring seat at the corresponding end, i.e. the opening and closing end; the wiring seat upper cover is provided with a dust cover; a printed circuit board is provided in the shell, and the wiring seat is provided on the printed circuit board; the shell comprises: a shell with an open bottom and a bottom cover arranged at the bottom of the shell, and the specific arrangement is as follows: a clamping boss is provided on the outer walls of both side edges of the bottom cover, and a clamping groove corresponding to the clamping boss is provided on the inner walls of both side edges of the shell. When clamping, the clamping groove on the shell is clamped on the clamping boss on the bottom cover.

2. The retractable junction box according to claim 1, characterized in that: At least one toggle switch is further provided on the printed circuit board, and correspondingly, a toggle lever placement hole corresponding to the toggle lever of the toggle switch is opened on the top wall of the housing, and a sealing gasket is provided on the back side of the top wall of the housing, and a toggle lever through-hole corresponding to the toggle lever placement hole is opened on the sealing gasket. After the toggle handle is sleeved on the toggle lever of the toggle switch, it passes through the toggle lever through-hole of the sealing gasket and extends into the toggle lever placement hole of the housing, so that the corresponding surface of the toggle handle is tightly attached to the sealing gasket to form a seal.

3. The retractable junction box according to claim 1, characterized in that: The specific setting method of the wire pressing cover is: the wire pressing seat is provided with at least two arc-shaped support parts that are bent in the retraction direction of the wire pressing seat, and the wire pressing cover is provided with a flip support hole corresponding to the arc-shaped support part on its corresponding end, that is, its flip support end, and the flip support hole on the wire pressing cover is movably sleeved on the corresponding arc-shaped support part on the wire pressing seat.

4. The retractable junction box according to claim 3, characterized in that: The wire pressing cover is provided with plate-shaped locking parts on both sides of its other end, i.e., its opening and closing end, and the inner side of the plate-shaped locking part is provided with a cover locking rib, and the wire pressing seat is provided with a seat locking rib that cooperates with the cover locking rib on the plate-shaped locking part.

5. The retractable junction box according to claim 4, characterized in that: The lower end of the plate-shaped locking portion is provided with a bent portion outwardly.

6. The retractable junction box according to claim 1, characterized in that: The printed circuit board is arranged on the bottom cover, and the specific arrangement is as follows: a positioning pad column is provided on the bottom cover, and the positioning pad column includes: a pad column, a positioning column arranged on the pad column, and a rest step is formed between the positioning column and the pad column. At least one positioning clamping boss is provided on the inner wall of one side edge of the bottom cover, and the lower edge of the positioning clamping boss corresponds to the rest step on the positioning pad column. A positioning placement hole corresponding to the positioning column is opened on the printed circuit board, and a plurality of supporting feet and positioning clamping feet that cooperate with the positioning clamping boss are provided on the back of the printed circuit board. The positioning placement hole on the printed circuit board is sleeved on the positioning column, so that the printed circuit board is placed on the rest step on the positioning pad column, the supporting feet are against the bottom cover, and the positioning clamping feet are clamped under the corresponding positioning clamping boss.

7. A retractable junction box according to any one of claims 1 to 6, characterized in that: The wire pressing seat is provided with a locking through hole in the center of the opening and closing end, and the wire pressing cover is provided with a locking column corresponding to the locking through hole on the wire pressing seat. A locking hole is provided on the locking column, and a screw is selected to pass through the locking through hole on the wire pressing seat and set in the locking hole on the locking column.

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