Junction box and junction box assembly method

Abstract

The application belongs to the technical field of distribution box, and discloses a distribution box and a distribution box assembling method. In the distribution box, the box body has a front end face, and the opening of the box body is arranged on the front end face. The adapter frame has a first end and a second end, is fixedly connected to the box body, and is in sealing cooperation with the front end face at the first end. The adapter frame is provided with a first connecting piece. The box door is provided with a second connecting piece, which can cooperate with the first connecting piece to fix the box door to the second end and close the opening. When the box needs to be opened for inspection and cleaning, the second connecting piece only needs to be removed from the first connecting piece to detach the box door from the adapter frame, and the adapter frame does not need to be detached again. After the inspection and cleaning are completed, the second connecting piece is connected to the first connecting piece again, so that the box door can be reinstalled on the adapter frame. In the distribution box, the box door is detached and installed relative to the adapter frame, and after multiple detachments and installations, the box body itself is not damaged.

Description

Technical Field

[0001] This invention relates to the field of junction box technology, and more particularly to junction boxes and junction box assembly methods. Background Technology

[0002] Subway vehicle junction boxes are used to connect communication cables and control signal lines between different carriages, ensuring data transmission throughout the train. During daily use, the junction boxes need to be kept sealed to prevent dust and water from entering. To ensure reliable connections at the wiring terminals and to prevent dust and water accumulation inside the box, regular opening, inspection, and cleaning are also necessary.

[0003] Figure 1 This is a half-sectional view of a junction box in related technologies, such as... Figure 1 As shown, in the related technology, the door 3' of the distribution box is installed on the box body 1' by 12 screws 2'. When it is necessary to open the box for inspection and cleaning, the 12 screws 2' need to be unscrewed one by one and the door 3' needs to be removed. The problem is that after repeatedly removing and installing the screws 2', the box body 1' and the door 3' are very prone to deformation in the screw 2' fastening area, which leads to damage to the box body 1'. Summary of the Invention

[0004] According to one aspect of the present invention, a junction box is provided to solve the problem that junction boxes in the related art are prone to damage.

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

[0006] Distribution box, including:

[0007] The box body has a front face, and the opening of the box body is provided on the front face;

[0008] The adapter frame has a first end and a second end. The adapter frame is fixedly connected to the housing, and the first end is sealed to the front end face. The adapter frame is provided with a first connector.

[0009] The box door is provided with a second connector, which can cooperate with the first connector to fix the box door to the second end and close the opening. The box body, the adapter frame and the box door are arranged sequentially along the first direction.

[0010] As a preferred embodiment of the junction box, the outer wall of the adapter frame is provided with a limiting plate, which can abut against the outer wall of the box door.

[0011] As a preferred embodiment of the junction box, the adapter frame is a rectangular frame, and four limiting plates are provided. Each of the four limiting plates is L-shaped and has two extensions. The two extensions of the limiting plates are respectively provided on two adjacent outer side walls of the adapter frame.

[0012] As a preferred embodiment of the junction box, the adapter frame is provided with a limiting protrusion on the side near the box door, and the box door is provided with a limiting groove on the side near the adapter frame. The limiting protrusion can be inserted into the limiting groove and abut against the groove wall of the limiting groove.

[0013] As a preferred embodiment of the junction box, the first connector is disposed on the inner wall of the adapter frame, and the second connector passes through the box door and is rotatable relative to the box door to have a locked position and an unlocked position. When the box door is in the locked position, the first connector and the second connector abut against each other along a first direction to prevent the box door from detaching from the adapter frame along the first direction. When the box door is in the unlocked position, the first connector and the second connector are misaligned along the first direction.

[0014] As a preferred embodiment of the junction box, multiple first connectors and multiple second connectors are provided, with each of the multiple first connectors corresponding to one of the multiple second connectors.

[0015] As a preferred embodiment of the junction box, it also includes a connecting bolt, the adapter frame has a threaded hole, the box door has a through hole, and the connecting bolt can pass through the through hole and engage with the threaded hole.

[0016] As a preferred embodiment of the junction box, the outer side wall of the adapter frame is provided with a connecting block, the box door is provided with a connecting plate, the connecting plate extends toward the outer side of the box door, the threaded hole is opened in the connecting block, and the through hole is opened in the connecting plate.

[0017] According to another aspect of the present invention, a junction box assembly method is provided, implemented using the aforementioned junction box, the junction box assembly method comprising:

[0018] S100: The adapter frame is fixedly connected to the housing;

[0019] S200: The cabinet door is fixedly connected to the second end of the adapter frame.

[0020] As a preferred embodiment of the junction box assembly method, the method further includes steps S100-S200:

[0021] S110: Apply sealant between the first end of the adapter frame and the front end face.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a junction box, including a box body, a transfer frame, and a door. The box body has a front end face, and the opening of the box body is located on the front end face. The transfer frame has a first end and a second end, and the transfer frame is fixedly connected to the box body, with the first end sealingly fitted to the front end face. The transfer frame is provided with a first connector. The door is provided with a second connector, which can cooperate with the first connector to fix the door to the second end and close the opening. The box body, the transfer frame, and the door are arranged sequentially along a first direction. When the junction box needs to be opened for inspection and cleaning, only the second connector needs to be removed from the first connector to remove the door from the transfer frame. The transfer frame does not need to be disassembled again. After inspection and cleaning are completed, the second connector can be reconnected to the first connector to reinstall the door on the transfer frame. In this junction box, the door is disassembled and installed relative to the transfer frame, and repeated disassembly and assembly will not damage the box body itself.

[0024] The present invention also provides a junction box assembly method. In the junction box assembly method described above, the adapter frame is fixedly connected to the box body, and the box door is fixedly connected to the second end of the adapter frame, thereby connecting the box body, the adapter frame and the box door in sequence along the first direction. In this junction box, the box door is disassembled and installed relative to the adapter frame. After multiple disassemblies and reassemblies, the box body itself will not be damaged. Attached Figure Description

[0025] Figure 1 This is a half-sectional view of a junction box in related technologies;

[0026] Figure 2 This is a schematic diagram of the junction box in an embodiment of the present invention;

[0027] Figure 3 This is a first exploded view of the junction box in an embodiment of the present invention;

[0028] Figure 4 yes Figure 3 Enlarged view of point C in the middle;

[0029] Figure 5 This is a second exploded view of the junction box in an embodiment of the present invention;

[0030] Figure 6 yes Figure 5 Enlarged view at point D;

[0031] Figure 7 This is a flowchart of the junction box assembly method in an embodiment of the present invention.

[0032] In the picture:

[0033] 1' Box body; 2' Screws; 3' Box door;

[0034] 1. Box body; 11. Front face; 12. Opening;

[0035] 2. Adapter frame; 21. Limiting plate; 22. Limiting protrusion; 23. Connecting block;

[0036] 3. Door; 31. Limiting groove; 32. Through hole; 321. Connecting plate; 33. Handle;

[0037] 41. First connector; 411. Slot; 42. Second connector;

[0038] 5. Connecting bolts. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0043] During daily use, the junction box needs to be kept sealed to prevent dust and water from entering. To ensure reliable terminal connections and prevent dust and water accumulation, regular opening and cleaning are also necessary. In related technologies, the junction box door is installed to the box body with 10 screws. When opening for inspection and cleaning, these screws need to be unscrewed one by one, and the door removed. The problem is that after repeated screw removal and installation, the box body and door are prone to deformation in the screw-fastening areas, leading to damage.

[0044] To address this issue, this embodiment provides a junction box to solve the problem that junction boxes in related technologies are prone to damage.

[0045] Reference Figures 2-6 The junction box includes a box body 1, a transition frame 2, and a door 3. The box body 1 has a front face 11, and an opening 12 is located on the front face 11. The transition frame 2 has a first end and a second end. The transition frame 2 is fixedly connected to the box body 1, and the first end is sealed to the front face 11. The transition frame 2 is provided with a first connector 41. The door 3 is provided with a second connector 42, which can cooperate with the first connector 41 to fix the door 3 to the second end and close the opening 12. The box body 1, the transition frame 2, and the door 3 are arranged sequentially along a first direction (the first direction is...). Figure 2 , Figure 3 as well as Figure 5 (A and B directions in the diagram). When the junction box needs to be opened for inspection and cleaning, simply remove the second connector 42 from the first connector 41 to remove the box door 3 from the adapter frame 2. The adapter frame 2 does not need to be disassembled again. After inspection and cleaning, reconnect the second connector 42 to the first connector 41 so that the box door 3 can be reinstalled on the adapter frame 2. In this junction box, the box door 3 is disassembled and installed relative to the adapter frame 2. After multiple disassemblies and reassemblies, it will not damage the box body 1 itself.

[0046] Continue to refer to Figures 2-6 The outer wall of the adapter frame 2 is provided with a limiting plate 21, which can abut against the outer wall of the door 3. Thus, after the door 3 and the adapter frame 2 are assembled, the limiting plate 21 limits the door 3, so that the door 3 can be stably installed on the adapter frame 2.

[0047] Continue to refer to Figures 2-6The adapter frame 2 is a rectangular frame. Furthermore, the door 3 is rectangular and fits the adapter frame 2. Four limiting plates 21 are provided, each L-shaped and having two extensions. The two extensions of each limiting plate 21 are respectively located on two adjacent outer walls of the adapter frame 2, thus positioning the limiting plates 21 at the four corners of the adapter frame 2. Each limiting plate 21 can limit the two outer walls of the door 3, thereby improving the limiting effect.

[0048] Continue to refer to Figures 2-6 A limiting protrusion 22 is provided on the side of the adapter frame 2 near the door 3, and a limiting groove 31 is provided on the side of the door 3 near the adapter frame 2. The limiting protrusion 22 can be inserted into the limiting groove 31 and abut against the groove wall of the limiting groove 31. Thus, the limiting can be further completed through the cooperation between the limiting protrusion 22 and the limiting groove 31, so that the door 3 can be stably installed on the adapter frame 2.

[0049] In related technologies, the junction box door is installed to the box body with screws, which has the following problems: First, it is inconvenient to open and maintain the box. Opening the junction box door requires removing each screw in turn, and when installing the door, all screws need to be installed one by one, which is a lot of work. Second, the screws need to be removed and reinstalled multiple times, and the threads of the threaded holes are prone to wear, resulting in the screws not being fixed tightly.

[0050] In this regard, we will continue to refer to Figures 2-6 In this embodiment, the first connector 41 is disposed on the inner wall of the adapter frame 2, and the second connector 42 passes through the door 3 and can rotate relative to the door 3 to have a locked position and an unlocked position. When the door 3 is in the locked position, the first connector 41 and the second connector 42 abut against each other along the first direction to prevent the door 3 from detaching from the adapter frame 2 along the first direction. When the door 3 is in the unlocked position, the first connector 41 and the second connector 42 are misaligned along the first direction, so that the locking and unlocking between the adapter frame 2 and the door 3 can be achieved by rotating the second connector 42, which is convenient to operate. Specifically, the first connector 41 has a slot 411. When the door 3 is in the locked position, the slot wall of the slot 411 abuts against the second connector 42 along the first direction.

[0051] Continue to refer to Figures 2-6 Multiple first connectors 41 and multiple second connectors 42 are provided, with each first connector 41 corresponding to a different second connector 42, thereby improving the stability of the connection between the adapter frame 2 and the door 3. Optionally, four first connectors 41 and four second connectors 42 are provided, with two first connectors 41 on each of the left and right sides of the adapter frame 2, and the four second connectors 42 corresponding to each of the four first connectors 41.

[0052] Continue to refer to Figures 2-6 In this embodiment, in addition to the first connecting member 41 and the second connecting member 42, the junction box also includes connecting bolts 5, the adapter frame 2 has threaded holes, and the box door 3 has through holes 32. The connecting bolts 5 can pass through the through holes 32 and engage with the threaded holes, serving as a redundant fixing structure to ensure that the box door 3 can be stably fixed to the adapter frame 2. Optionally, multiple connecting bolts 5, threaded holes, and through holes 32 are provided, with multiple connecting bolts 5 passing through multiple through holes 32 one-to-one and engaging with multiple threaded holes. It is understood that although in this embodiment, the adapter frame 2 and the box door 3 are also connected by connecting bolts 5, repeated disassembly and reassembly of the box door 3 will not damage the box body 1 itself.

[0053] Continue to refer to Figures 2-6 The outer wall of the adapter frame 2 has a protruding connecting block 23, and the door 3 has a connecting plate 321. The connecting plate 321 extends outward toward the door 3. Threaded holes are formed in the connecting block 23, and through holes 32 are formed in the connecting plate 321. This arrangement places the threaded holes of the adapter frame 2 and the through holes 32 of the door 3 on the outer side of their bodies, facilitating operation and preventing damage to the main body of the adapter frame 2 and the door 3. If the door 3 is repeatedly disassembled and reassembled, causing damage to the connecting block 23 and the connecting plate 321, the connecting block 23 and the connecting plate 321 can be replaced directly without replacing the main body of the adapter frame 2 and the door 3.

[0054] Optionally, the side of the door 3 away from the adapter frame 2 is also provided with several handles 33 to facilitate operation by staff.

[0055] This embodiment also provides a junction box assembly method, implemented using the aforementioned junction box, with reference to... Figure 7 The assembly method of the junction box includes the following steps.

[0056] S100: Fix the adapter frame 2 to the housing 1.

[0057] Specifically, the adapter frame 2 can be fixedly connected to the enclosure 1 by several screws. It is understood that the adapter frame 2 is generally not replaced during the normal use of the junction box. Therefore, the adapter frame 2 can be fixedly connected to the enclosure 1 by screws to improve the stability of the connection between the two, and there is no need to consider the thread wear caused by the screw connection.

[0058] S110: Apply sealant between the first end of the adapter frame 2 and the front end face 11.

[0059] This step ensures a seal between the first end of the adapter frame 2 and the front face 11, preventing water or dust from entering the junction box during daily use and damaging the internal equipment.

[0060] S200: Fix the door 3 to the second end of the adapter frame 2.

[0061] Through the above steps, the enclosure 1, the adapter frame 2 and the door 3 can be connected sequentially along the first direction. In this junction box, the door 3 is disassembled and installed relative to the adapter frame 2. After multiple disassemblies and reassemblies, the enclosure 1 itself will not be damaged.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A junction box, characterized in that, include: The box (1) has a front end face (11), and the opening (12) of the box (1) is provided on the front end face (11). The adapter frame (2) has a first end and a second end. The adapter frame (2) is fixedly connected to the housing (1), and the first end is sealed to the front end face (11). The adapter frame (2) is provided with a first connector (41). The box door (3) is provided with a second connector (42), which can cooperate with the first connector (41) to fix the box door (3) to the second end and close the opening (12). The box body (1), the adapter frame (2) and the box door (3) are arranged in sequence along the first direction. The outer wall of the adapter frame (2) is provided with a limiting plate (21), which can abut against the outer wall of the box door (3); The adapter frame (2) is a rectangular frame. There are four limiting plates (21), and all four limiting plates (21) are L-shaped and have two extensions. The two extensions of the limiting plates (21) are respectively located on two adjacent outer walls of the adapter frame (2). The adapter frame (2) is provided with a limiting protrusion (22) on the side near the box door (3), and the box door (3) is provided with a limiting groove (31) on the side near the adapter frame (2). The limiting protrusion (22) can be inserted into the limiting groove (31) and abut against the groove wall of the limiting groove (31). The first connector (41) is disposed on the inner wall of the adapter frame (2), and the second connector (42) passes through the door (3) and can rotate relative to the door (3) to have a locked position and an unlocked position. When the door (3) is in the locked position, the first connector (41) and the second connector (42) abut against each other in the first direction to prevent the door (3) from detaching from the adapter frame (2) in the first direction. When the door (3) is in the unlocked position, the first connector (41) and the second connector (42) are misaligned in the first direction.

2. The junction box according to claim 1, characterized in that, Multiple first connectors (41) and multiple second connectors (42) are provided, and multiple first connectors (41) and multiple second connectors (42) are provided in a one-to-one correspondence.

3. The junction box according to claim 1 or 2, characterized in that, It also includes a connecting bolt (5), the adapter frame (2) also has a threaded hole, the box door (3) also has a through hole (32), the connecting bolt (5) can pass through the through hole (32) and be threadedly engaged with the threaded hole.

4. The junction box according to claim 3, characterized in that, The outer side wall of the adapter frame (2) is provided with a connecting block (23), the box door (3) is provided with a connecting plate (321), the connecting plate (321) extends toward the outer side of the box door (3), the threaded hole is opened in the connecting block (23), and the through hole (32) is opened in the connecting plate (321).

5. A method for assembling a junction box, characterized in that, The junction box assembly method, implemented as described in any one of claims 1-4, comprises: S100: The adapter frame (2) is fixedly connected to the housing (1); S200: The door (3) is fixedly connected to the second end of the adapter frame (2).

6. The junction box assembly method according to claim 5, characterized in that, It also includes the steps between S100 and S200: S110: Apply sealant between the first end of the adapter frame (2) and the front end face (11).

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