Metering box convenient to maintain

Abstract

The invention relates to a metering box convenient to maintain, and relates to the technical field of metering boxes, the metering box comprises a box body and a box door, and the box door and the box body are connected through at least two groups of hinge devices; the hinging device comprises a U-shaped hinging seat fixed on the box body, a first hinging sheet and a second hinging sheet which are fixed on the box door, and a hinging shaft penetrating through the hinging seat and the hinging sheets; the hinge shaft comprises a pressing rod, a fixing rod slidably arranged in the pressing rod, a reset spring connecting the pressing rod and the fixing rod, and a limiting cap arranged at the end of the pressing rod. The fixing rod is inserted into the fixing base on the second hinge piece and fixed through the first plug pin, the limiting cap is clamped to the clamping groove in the second hinge piece through the buckle, and the buckle can be driven to be separated from the clamping groove and release the hinge shaft by pressing the limiting cap. The limiting cap is pressed to drive the buckle to be separated from the clamping groove, the reset spring pushes the pressing rod to reset, the box door and the box body are rapidly separated in cooperation with pulling-out of the first plug pin, and maintenance operation is simplified.

Description

Technical Field

[0001] This application relates to the technical field of metering boxes, and particularly to a metering box that is convenient for maintenance. Background Art

[0002] The electric energy metering box is a core device in the power system for accurately measuring, recording, and managing electric energy consumption, and is widely used in residential, industrial and commercial, and industrial fields.

[0003] In the related art, when maintenance staff repair the metering box, they need to separate the box door from the box body. When separating the box door from the box body, professional tools are required, and professional tools are also needed to connect the box door and the box body after the repair is completed, resulting in a cumbersome repair process and affecting the repair efficiency of the staff. Summary of the Invention

[0004] In order to facilitate the maintenance of the staff, this application provides a metering box that is convenient for maintenance.

[0005] A metering box that is convenient for maintenance provided by this application adopts the following technical solutions: A metering box that is convenient for maintenance includes a box body and a box door, and the box door is connected to the box body through at least two sets of hinge devices; The hinge device includes a "U"-shaped hinge seat fixed on the box body, a first hinge piece and a second hinge piece fixed on the box door, and a hinge shaft passing through the hinge seat and the hinge piece; The hinge shaft includes a pressing rod, a fixing rod slidably disposed in the pressing rod, a return spring connecting the two, and a limiting cap disposed at the end of the pressing rod; The fixing rod is inserted into a fixing seat on the second hinge piece and fixed by a first pin, and the limiting cap is snap-fitted with a card slot on the second hinge piece. Pressing the limiting cap can drive the snap to disengage from the card slot and release the hinge shaft.

[0006] By adopting the above technical solutions, by pressing the limiting cap to drive the snap to disengage from the card slot, the return spring pushes the pressing rod to reset, and in cooperation with the pulling out of the first pin, the rapid separation of the box door and the box body is realized, simplifying the maintenance operation. In addition, the two sets of hinge devices disperse the load of the box door, avoiding deformation caused by single-point stress; the cooperation of the "U"-shaped hinge seat and the hinge piece enhances the anti-shearing force ability. Moreover, the snap-fitting of the snap and the card slot needs to actively press the limiting cap to unlock, preventing the box door from falling off accidentally.

[0007] Optionally, a first hinge groove is provided in the hinge seat, a second hinge groove is formed on the first hinge piece, the axis of the second hinge groove is parallel to the axis of the first hinge groove, the outer wall of the pressing rod abuts against the inner wall of the second hinge groove, and the fixing rod passes through the first hinge groove and the second hinge groove and then is inserted into the fixing seat.

[0008] By adopting the above technical solution, the parallel design of the axes of the two hinge grooves ensures that no additional angle adjustment is required during the installation of the hinge shaft, reducing the assembly difficulty. The pressing rod abuts against the inner wall of the second hinge groove, reducing the wobbling during the rotation of the hinge shaft and improving the smoothness of opening and closing.

[0009] Optionally, both ends of the return spring are respectively fixed to the bottom of the groove of the pressing rod and the end of the fixed rod. When the pressing limit cap is pressed, the return spring is compressed, and after release, it pushes the pressing rod to reset.

[0010] By adopting the above technical solution, the return spring provides a reverse driving force to ensure that the hinge shaft automatically returns to the locked state after being pressed, avoiding manual adjustment. At the same time, the compression stroke of the spring is controllable, reducing metal fatigue caused by repeated pressing.

[0011] Optionally, a support plate is rotatably connected to the inner wall of the first hinge groove of the hinge seat. A support rod is provided on the side of the support plate away from the second hinge piece. A rotating sleeve is sleeved on the support rod. The rotating sleeve abuts against the support plate and a positioning hole for the hinge shaft to pass through is provided inside the rotating sleeve.

[0012] By adopting the above technical solution, the rotating sleeve and the positioning hole limit the radial offset of the hinge shaft, avoiding the yaw of the hinge shaft when the box door is opened and closed. The support plate and the support rod form an auxiliary rotation fulcrum, sharing the load of the hinge shaft and extending the service life.

[0013] Optionally, a locking notch is provided on the outer wall of the rotating sleeve. A locking spring and an arc-shaped pressing piece are provided in the locking notch; A locking piece is slidably connected to the side of the hinge seat. The locking piece is fixed to the hinge seat through a second pin. A pressing plate is provided on the side of the locking piece close to the rotating sleeve. The pressing plate pushes the pressing piece to abut against the buckle.

[0014] By adopting the above technical solution, the pressing plate pushes the pressing piece to press the buckle, avoiding the accidental touch of the buckle and causing it to fall off when the box door is opened, and the locking piece is fixed through the second pin, which is convenient for the staff to disassemble the locking piece.

[0015] Optionally, an initial notch, a rotating notch and a deceleration notch are sequentially provided on the surface of the pressing plate. The initial notch corresponds to the closed state of the box door, the rotating notch corresponds to the opening angle of the box door less than 90°, and the deceleration notch corresponds to the opening angle of the box door of 90° - 180°; A ball is embedded in the rotating notch, and the radial depth of the deceleration notch gradually decreases along the opening direction of the box door.

[0016] By adopting the above technical solution, different notches correspond to different opening and closing stages, realizing the matching of resistance and usage scenarios.

[0017] Among them, when the pressing piece is located at the initial notch: the resistance is the smallest when the pressing piece is located at the initial notch, ensuring the stability of the closed state.

[0018] When the pressing piece is located at the rotating notch, the ball can reduce friction, facilitating small-angle opening.

[0019] When the pressing piece is located at the decelerating notch, the gradually decreasing depth can increase the contact area between the pressing piece and the notch, and the impact during strong wind or rapid opening can be mitigated through frictional force.

[0020] Optionally, a slow-closing convex block is provided between the initial notch of the pressing plate and the rotating notch. The slow-closing convex block is made of elastic material and is used to slow down the closing speed of the box door.

[0021] By adopting the above technical solution, when the box door closes, the pressing piece contacts the slow-closing convex block, and the elastic deformation absorbs the impact energy, avoiding noise or damage caused by the box door hitting the box body. At the same time, the risk of deformation of metal components caused by instantaneous impact can be reduced.

[0022] Optionally, a positioning block is provided on the side of the rotating plate away from the second hinge piece. A positioning groove that abuts against the outer wall of the rotating sleeve is formed on the positioning block, and the side of the positioning block away from the rotating sleeve is fixed to the box body.

[0023] By adopting the above technical solution, the positioning groove restricts the axial displacement of the rotating sleeve, preventing the hinge shaft from coming out, and the positioning block is fixed to the box body, enhancing the connection rigidity between the support plate and the box body.

[0024] Optionally, one end of the locking spring is fixed in the spring groove of the rotating sleeve, and the other end of the locking spring is connected to the pressing piece; When the box door is opened rapidly, the pressing piece slides along the decelerating notch, and the locking spring is compressed to increase the frictional resistance.

[0025] By adopting the above technical solution, when opening rapidly, the compression of the locking spring provides additional elastic force, increasing the friction between the pressing piece and the decelerating notch, forming a damping effect. In addition, the spring deformation absorbs the kinetic energy of the box door, reducing the instantaneous load borne by the hinge device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the present application, by pressing the limit cap to drive the buckle to disengage from the card slot, the return spring pushes the pressing rod to reset, and in cooperation with the extraction of the first bolt, the rapid separation of the box door and the box body is realized, simplifying the maintenance operation; 2. In the present application, through the design of the initial notch, rotating notch, and decelerating notch of the pressing plate, combined with the locking spring and the slow-closing convex block, the adaptive adjustment of the opening and closing speed of the box door is realized, solving the problem that the traditional metering box door is easily damaged due to rapid opening and closing by external force; 3. In the present application, through the cooperation of the locking piece and the pressing plate, it is possible to prevent the accidental touch of the buckle during maintenance, resulting in the box door falling off, enhancing safety. Description of the Drawings

[0027] Figure 1It is a schematic diagram of the overall structure of Embodiment 1 of the present application; Figure 2 It is Figure 1 a partially enlarged schematic diagram of part A in Figure 3 It is Figure 1 a sectional structure schematic diagram along the A-A plane in , mainly showing the hinge seat and the hinge shaft; Figure 4 It is a schematic diagram of the overall structure of Embodiment 2 of the present application; Figure 5 It is Figure 4 a sectional structure schematic diagram along the B-B plane in , mainly showing the hinge seat and the hinge shaft; Figure 6 It is Figure 4 a sectional structure schematic diagram along the C-C plane in , mainly showing the pressing plate and the positioning block; Figure 7 It is Figure 4 a sectional structure schematic diagram along the C-C plane in , mainly showing the pressing plate and the positioning block.

[0028] Description of the drawings: 1. Box body; 2. Box door; 3. Hinge device; 301. Hinge seat; 302. First hinge piece; 303. Second hinge piece; 304. Fixed seat; 305. Hinge shaft; 3051. Pressing rod; 3052. Fixed rod; 306. Limit cap; 307. Return spring; 308. Snap; 309. Rotating ring; 310. Support plate; 311. Support rod; 312. Rotating sleeve; 313. Locking spring; 314. Pressing piece; 315. Locking piece; 316. Pressing plate; 4. First hinge groove; 5. Second hinge groove; 6. Pressing groove; 7. First pin; 8. Card slot; 9. Positioning block; 10. Positioning hole; 11. Locking notch; 12. Spring groove; 13. Locking groove; 14. Second pin; 15. Initial notch; 16. Rotating notch; 17. Deceleration notch; 18. Slow-closing convex block; 19. Ball. Detailed implementation manners

[0029] The following Figure 1 - Figure 7 in conjunction with the attached

[0030] Embodiment 1: A metering box convenient for maintenance, referring to Figure 1 , includes a box body 1 and a box door 2. Between the box door 2 and the box body 1, there are two groups of hinge devices 3 for connecting the box door 2 and the box body 1, and the hinge device 3 is used to rotatably connect the box body 1 and the box door 2.

[0031] Referring to Figure 1 , Figure 2, the hinge device 3 includes a "U"-shaped hinge seat 301 fixedly connected to the box body 1. A first hinge groove 4 is formed in the hinge seat 301. In addition, a first hinge piece 302 and a second hinge piece 303 are respectively abutted against the surfaces at the vertical two ends of the hinge seat 301, and both the first hinge piece 302 and the second hinge piece 303 are fixedly connected to the box door 2.

[0032] Referring to Figure 2 、 Figure 3 , the first hinge piece 302 abuts against the upper end of the hinge seat 301. A second hinge groove 5 is formed in the first hinge piece 302. The axis of the second hinge groove 5 is arranged parallel to the axis of the first hinge groove 4; the second hinge piece 303 abuts against the lower end of the hinge seat 301, and a fixing seat 304 is fixedly connected to the side away from the hinge seat 301.

[0033] A hinge shaft 305 is inserted through the first hinge groove 4 and the second hinge groove 5. The hinge shaft 305 includes a pressing rod 3051, and the outer surface of the pressing rod 3051 abuts against the inner wall of the second hinge groove 5. A pressing groove 6 is formed in the pressing rod 3051. A fixing rod 3052 is slidably connected in the pressing groove 6. The fixing rod 3052 passes through the first hinge groove 4 and then is inserted into the fixing seat 304. A first pin 7 penetrating the fixing rod 3052 is inserted into the fixing seat 304. In addition, the fixing rod 3052 is fixedly connected to the pressing rod 3051 at the bottom of the pressing groove 6 through a return spring 307.

[0034] A limit cap 306 is sleeved on the end of the pressing rod 3051 away from the fixing rod 3052. The limit cap 306 is integrally connected with a buckle 308. A clamping groove 8 is formed on the side of the second hinge piece 303 away from the hinge seat 301. After being installed in place, the buckle 308 passes through the first hinge groove 4 and is clamped with the clamping groove 8.

[0035] The implementation principle of Embodiment 1 of this application is as follows: After the hinge seat 301, the first hinge piece 302, and the second hinge piece 303 are installed, the first hinge groove 4 and the second hinge groove 5 are aligned. Then, one side of the fixing rod 3052 passes through the second hinge groove 5 and the first hinge groove 4 and is inserted into the fixing seat 304. At this time, the outer surface of the pressing rod 3051 abuts against the inner wall of the second hinge groove 5. Finally, by pressing the limit cap 306, the return spring 307 deforms and contracts, and at the same time, the buckle 308 is driven to pass through the first hinge groove 4. When the limit cap 306 abuts against the first hinge piece 302, the buckle 308 is clamped and fixed with the clamping groove 8.

[0036] It should be noted that the clamping groove 8 is a groove matching the shape of the buckle 308, and the buckle 308 is embedded in the clamping groove 8 after passing through the first hinge groove 4.

[0037] When disassembling, the staff separates the buckle 308 from the clamping groove 8 by pressing the limit cap 306. After the buckle 308 is separated from the clamping groove 8, the return spring 307 deforms and elongates, causing the pressing rod 3051 to slide away from the fixed rod 3052. Finally, the first bolt 7 is pulled out and the fixed rod 3052 and the pressing rod 3051 are taken out, so as to separate the box door 2 from the box body 1.

[0038] Embodiment 2: A metering box convenient for maintenance, referring to Figure 4 、 Figure 5 , the difference between it and Embodiment 1 is that a rotating ring 309 is fixedly connected to the inner wall of the first hinge groove 4 of the hinge seat 301. A rotating groove is formed in the side wall of the rotating ring 309, and a strip-shaped support plate 310 is rotatably connected to the inner wall of the rotating groove. A support rod 311 is fixedly connected to the side of the support plate 310 away from the second hinge piece 303. A rotating sleeve 312 is sleeved on the support rod 311, and the rotating sleeve 312 abuts against the support plate 310.

[0039] Referring to Figure 5 、 Figure 6 , a positioning block 9 is fixedly connected to the side of the rotating ring 309 away from the second hinge piece 303. A positioning groove is formed in the side of the positioning block 9 close to the rotating sleeve 312, and the positioning groove abuts against the side wall of the outer surface of the rotating sleeve 312. In addition, one side of the positioning block 9 abuts against the box body 1.

[0040] A positioning hole 10 and a locking notch 11 are formed in the rotating sleeve 312. Among them, a fixed rod 3052 is inserted into the positioning hole 10, and after being installed in place, the outer surface of the pressing rod 3051 abuts against the inner wall of the positioning hole 10. A spring groove 12 is formed in the surface of the rotating sleeve 312 close to the locking notch 11. A plurality of locking springs 313 are fixedly connected to the bottom of the spring groove 12. An arc-shaped pressing piece 314 is fixedly connected to the locking springs 313. After being installed in place, the buckle 308 extends into the locking notch 11, and the side of the pressing piece 314 close to the rotating sleeve 312 abuts against the buckle 308.

[0041] Referring to Figure 5 、 Figure 6 、 Figure 7 , an "L"-shaped locking groove 13 is formed in the side surface of the hinge seat 301. A locking piece 315 is slidably connected in the locking groove 13. The hinge seat 301 is fixed to the locking piece 315 through a second bolt 14, and a pressing plate 316 is fixedly connected to the side of the locking piece 315 close to the rotating sleeve 312. After the locking piece 315 is installed in place, the pressing plate 316 pushes the pressing piece 314 to abut against the buckle 308. Among them, an initial notch 15, a rotating notch 16, and a deceleration notch 17 are formed in the side of the pressing plate 316 close to the rotating sleeve 312, and the outer walls of adjacent notches are smoothly transitioned.

[0042] When the pressing piece 314 is located at the initial notch 15, the box door 2 is closed with the box body 1, and the central axis of the arc-shaped pressing piece 314 is located within the initial notch 15. After the box door 2 is opened, the pressing piece 314 slides along the pressing plate 316 and enters the rotating notch 16.

[0043] A slow-closing convex block 18 is fixedly connected between the pressing plate 316 at the initial notch 15 and the rotating notch 16.

[0044] When the pressing piece 314 is located at the rotating notch 16, the box door 2 is opened with the box body 1. At the same time, the opening angle of the box door 2 is less than 90°. A number of balls 19 are installed in the rotating notch 16 of the pressing plate 316, and the balls 19 are in contact with the pressing piece 314 to reduce the friction between the pressing plate 316 and the pressing piece 314.

[0045] When the pressing piece 314 is located at the deceleration notch 17, the opening angle of the box door 2 is between 90° and 180°. The pressing plate 316 gradually extends towards the rotating sleeve 312 along the rotation direction of the pressing piece 314 at the reduced notch until the pressing plate 316 abuts against the outer surface of the rotating sleeve 312. And at this time, the locking spring 313 contracts towards the bottom of the spring groove 12, and the pressing piece 314 abuts against the rotating sleeve 312.

[0046] The implementation principle of Embodiment 2 of this application is: during installation, the fixing rod 3052 and the pressing rod 3051 pass through the positioning hole 10. Press the limit plate so that the pressing rod 3051 slides along the inner wall of the positioning hole 10, and make the buckle 308 pass through the locking notch 11 and then be clamped with the clamping groove 8.

[0047] Subsequently, the locking piece 315 is slidably connected to the hinge seat 301 and fixed by the second pin 14. At this time, the pressing plate 316 pushes the pressing piece 314 to abut against the surface of the buckle 308, so that the buckle 308 abuts against the side wall of the second hinge piece 303, thereby preventing the staff from accidentally touching the buckle 308 when checking the electrical components inside the box body 1, causing the buckle 308 to disengage from the clamping groove 8.

[0048] At the same time, when the box door 2 is opened, the pressing piece 314 slides along the pressing plate 316 and successively passes through the initial notch 15, the rotating notch 16, and the deceleration notch 17 on the pressing plate 316.

[0049] Among them, when the box door 2 is opened, the pressing piece 314 is in contact with the roller to reduce the resistance received by the box door 2 when it is opened.

[0050] When the box door 2 is quickly opened or encounters strong wind in the open state, the pressing piece 314 gradually moves from the rotating notch 16 of the pressing plate 316 towards the deceleration notch 17, and the locking spring 313 deforms and contracts, increasing the friction between the pressing piece 314 and the pressing plate 316, thereby increasing the resistance received by the box door 2 and slowing down the opening speed of the box door 2.

[0051] When the box door 2 is quickly closed, the pressing piece 314 abuts against the slow-closing convex block 18, causing the slow-closing convex block 18 to deform and compress, thereby slowing down the speed when the box door 2 is closed.

[0052] It should be noted that when the box door 2 rotates, the support plate 310 rotates synchronously with the box door 2 under the action of the buckle 308 and the pressing rod 3051.

[0053] During disassembly, pull out the second pin 14 used to connect the locking piece 315 and the hinge seat 301, and then pull out the locking piece 315 to separate the pressing plate 316 from the pressing piece 314 and the pressing piece 314 from the buckle 308. Finally, repeat the disassembly operation of Embodiment 1 to separate the box door 2 from the box body 1.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A metering box convenient for maintenance, comprising a box body (1) and a box door (2), characterized in that: The box door (2) is connected to the box body (1) through at least two groups of hinge devices (3); The hinge device (3) includes a "U"-shaped hinge seat (301) fixed on the box body (1), a first hinge piece (302) and a second hinge piece (303) fixed on the box door (2), and a hinge shaft (305) passing through the hinge seat (301) and the hinge pieces; The hinge shaft (305) includes a pressing rod (3051), a fixing rod (3052) slidably arranged in the pressing rod (3051), a return spring (307) connecting the two, and a limit cap (306) arranged at the end of the pressing rod (3051); The fixing rod (3052) is inserted into a fixing seat (304) on the second hinge piece (303) and fixed by a first pin (7), and the limit cap (306) is snap-connected to a card slot (8) on the second hinge piece (303) through a snap (308). Pressing the limit cap (306) can drive the snap (308) to disengage from the card slot (8) and release the hinge shaft (305).

2. The metering box convenient for maintenance according to claim 1, wherein: A first hinge groove (4) is arranged in the hinge seat (301), a second hinge groove (5) is formed on the first hinge piece (302), the axis of the second hinge groove (5) is parallel to the axis of the first hinge groove (4), the outer wall of the pressing rod (3051) abuts against the inner wall of the second hinge groove (5), and the fixing rod (3052) passes through the first hinge groove (4) and the second hinge groove (5) and then is inserted into the fixing seat (304).

3. The metering box convenient for maintenance according to claim 1 is characterized in that: Both ends of the return spring (307) are respectively fixed to the bottom of the groove of the pressing rod (3051) and the end of the fixing rod (3052). When the limit cap (306) is pressed, the return spring (307) is compressed, and after release, it pushes the pressing rod (3051) to reset.

4. A metering box convenient for maintenance according to claim 1, characterized in that: A support plate (310) is rotatably connected to the inner wall of the first hinge groove (4) of the hinge seat (301). A support rod (311) is arranged on the side of the support plate (310) away from the second hinge piece (303). A rotating sleeve (312) is sleeved on the support rod (311). The rotating sleeve (312) abuts against the support plate (310) and a positioning hole (10) for the hinge shaft (305) to pass through is formed inside the rotating sleeve (312).

5. The metering box convenient for maintenance according to claim 4, wherein: A locking notch (11) is arranged on the outer wall of the rotating sleeve (312), and a locking spring (313) and an arc-shaped pressing piece (314) are arranged in the locking notch (11); A locking piece (315) is slidably connected to the side of the hinge seat (301). The locking piece (315) is fixed to the hinge seat (301) through a second pin (14). A pressing plate (316) is arranged on the side of the locking piece (315) close to the rotating sleeve (312). The pressing plate (316) pushes the pressing piece (314) to abut against the snap (308).

6. The metering box convenient for maintenance according to claim 5, wherein: The surface of the pressing plate (316) is successively provided with an initial notch (15), a rotation notch (16) and a deceleration notch (17). The initial notch (15) corresponds to the closed state of the box door (2). The rotation notch (16) corresponds to the opening angle of the box door (2) less than 90°. The deceleration notch (17) corresponds to the opening angle of the box door (2) of 90° - 180°. A ball (19) is embedded in the rotation notch (16). The radial depth of the deceleration notch (17) gradually decreases along the opening direction of the box door (2).

7. The metering box convenient for maintenance according to claim 6, wherein: A slow - closing convex block (18) is provided between the initial notch (15) and the rotation notch (16) of the pressing plate (316). The slow - closing convex block (18) is made of an elastic material and is used to slow down the closing speed of the box door (2).

8. The metering box convenient for maintenance according to claim 4, characterized in that: A positioning block (9) is provided on the side of the rotating plate away from the second hinge piece (303). A positioning groove for abutting against the outer wall of the rotating sleeve (312) is formed on the positioning block (9). The side of the positioning block (9) away from the rotating sleeve (312) is fixed to the box body (1).

9. The metering box convenient for maintenance according to claim 5, characterized in that: One end of the locking spring (313) is fixed in the spring groove (12) of the rotating sleeve (312), and the other end of the locking spring (313) is connected to the pressing piece (314). When the box door (2) is quickly opened, the pressing piece (314) slides along the deceleration notch (17), and the locking spring (313) is compressed to increase the frictional resistance.

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