A high protection meter

Abstract

The application discloses a high-protection meter, which comprises a first shell and a second shell, the second shell enters the first shell laterally, the first shell comprises a shell cover and a side cover, the shell cover is formed with a first opening and a second opening in communication, the first opening faces a side edge of the shell cover, and the side cover is detachably mounted at the first opening of the shell cover; the second shell comprises a closure, the closure is connected with the shell cover to close the second opening; and the high-protection meter further comprises a buckling assembly, the buckling assembly comprises a buckling rail part and a buckling claw part, the buckling rail part is arranged on an inner side wall of the shell cover and extends in a depth direction of the shell cover, the buckling claw part is arranged on the second shell, and the buckling claw part is buckled with the buckling rail part. The meter structure entering from the side edge is arranged, the waterproof design is more reasonable, the buckling assembly is matched, a good folding and assembling effect of the shell cover can be formed, and thus a good waterproof effect is brought; on the other hand, the length of the meter in the left-right direction can be effectively reduced, and thus the installation quantity of multiple meters in a unit length is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of meter, in particular to a high protection meter. BACKGROUND

[0002] Instrument is generally refers to the use to measure the pipeline in a certain time interval in the total amount (cumulative amount) of the measured unit of instrument, such as electricity meter, water meter, gas meter and other metering instrument equipment, generally the device is placed in the external space, will be eroded by rain, thus need to have higher waterproof performance.

[0003] The existing meter terminal interface structure is exposed, the meter body structure is large, and the unreasonable structure design leads to poor waterproof performance of the internal electrical devices, therefore, according to this condition, a high protection meter needs to be designed. SUMMARY

[0004] The present application aims at overcoming the shortcomings of the prior art, and provides a high protection meter.

[0005] The present application solves the technical problem by adopting the following technical scheme:

[0006] A high protection meter, comprising a first shell and a second shell, the second shell enters the first shell laterally and is buckled with the first shell, wherein:

[0007] The first shell comprises a shell cover and a side cover, the shell cover is formed with a first opening and a second opening in communication, the first opening is directed to the side edge of the shell cover, and the side cover is detachably mounted on the first opening of the shell cover;

[0008] The second shell comprises a closure, which is connected with the shell cover to close the second opening;

[0009] Further comprising a buckling assembly, the buckling assembly comprises a buckling rail part and a buckling claw part, the buckling rail part is arranged on the inner side wall of the shell cover and extends in the depth direction of the shell cover, and the buckling claw part is arranged on the second shell and buckled with the buckling rail part.

[0010] Preferably, the buckling assembly comprises a first buckling rail and a first buckling claw, and the first buckling rail is located on the inner side wall of the second opening of the shell cover.

[0011] Preferably, the shell cover is formed with a long plate, the buckling assembly comprises a second buckling rail and a second buckling claw, and the second buckling rail is arranged on one side of the inner side wall of the long plate.

[0012] Preferably, the buckling assembly comprises a buckling arm arranged on the second shell, and further comprises a buckling groove arranged on the inner side wall of the shell cover and matched with the buckling arm.

[0013] Preferably, the buckle arm is connected to the buckle claw part, and the inner wall of the shell cover is further provided with a sub-track, and the buckle track part and the sub-track form a track, and the buckle claw part is connected to the track in cooperation with the buckle arm.

[0014] Preferably, the second shell includes a terminal seat and a terminal cover, the terminal seat includes a first structure and a second structure, the first structure of the terminal seat is arranged in the terminal cover, the first structure of the terminal seat is buckled with the terminal cover, and the buckle claw part is formed on the second structure of the terminal seat.

[0015] Preferably, the closure part includes a third buckle claw arranged on the terminal seat, a fourth buckle claw arranged on the terminal cover, and a third buckle track formed on the inner wall of the shell cover, the third buckle claw and the fourth buckle claw extend in the same direction, and the third buckle track buckles the third buckle claw and the fourth buckle claw.

[0016] Preferably, the terminal cover includes an end surface connected to the first shell, and the closure part includes a stepped part formed on the end surface.

[0017] Preferably, the terminal cover includes a body and a cover body, a fixing part for fixing a terminal sleeve is arranged between the first structure of the terminal seat and the body of the terminal cover, the body is provided with a first interface at a position corresponding to the fixing part, the terminal seat and the body of the terminal cover are matched to form a first through hole, an auxiliary terminal is detachably arranged in the first through hole, the first interface and the outer opening of the first through hole are located in a space enclosed by the cover body and the body, the body and the terminal seat are matched to form a second through hole, a movable rubber plug is arranged in the second through hole, and the cover body is provided with a contact head capable of contacting the rubber plug.

[0018] Preferably, the first through hole includes a first hole formed on the terminal seat and a second hole formed on the body, the auxiliary terminal is arranged in the first hole, one end of the auxiliary terminal is provided with a clamping point, and the terminal seat is provided with a first elastic arm matched with the clamping point at the inner opening position of the first hole.

[0019] The present application has the advantages and positive effects that:

[0020] 1. The meter structure with the side entry is arranged, the waterproof design is more reasonable, the buckle assembly is matched, the shell cover can be well folded and assembled, and good waterproof effect is brought; on the other hand, the length of the meter in the left-right direction can be effectively reduced, and the installation quantity of multiple meters in a unit length is improved.

[0021] 2、The application places the terminal in the second shell through the cooperation of the terminal seat, the shell and the cover, and the auxiliary terminal arranged on the terminal seat and the cover, reduces the possibility of the rain contacting the terminal interface, and greatly improves the waterproof performance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the explosion schematic diagram of the application;

[0023] Figure 2 is the internal structure schematic diagram of the application;

[0024] Figure 3 is the shell cover axis measurement schematic diagram in the application;

[0025] Figure 4 is the axis measurement diagram of the terminal seat and the terminal cover combination in the application;

[0026] Figure 5 is the axis measurement diagram of the terminal seat in the application;

[0027] Figure 6 is the axis measurement diagram of the terminal cover body in the application;

[0028] Figure 7 is the partial section view of the application;

[0029] Figure 8 is the first section view of the terminal seat and the terminal cover combination in the application;

[0030] Figure 9 is the second section view of the terminal seat and the terminal cover combination in the application.

[0031] In the drawing: 100, first shell; 110, shell cover; 110a, long plate; 110b, auxiliary rail; 111, first opening; 112, second opening; 113, front plate; 114, rear plate; 115, right plate; 116, upper plate; 120, side cover;

[0032] 200, second shell; 210, closure; 211, step part; 220, terminal seat; 220a, first structure; 220b, second structure; 221, first elastic arm; 222, baffle; 223, third claw; 224, fourth claw; 225, third rail; 226, fourth rail; 227, fifth claw; 228, fourth elastic arm; 229, fifth elastic arm; 230, terminal cover; 231, body; 2311, first interface; 2312, sink; 232, cover; 2321, contact; 2322, second interface;

[0033] 300, buckling assembly; 310, buckling rail part; 310a, convex rail; 311, first buckling rail; 312, second buckling rail; 320, buckling claw part; 320a, convex claw; 321, first buckling claw; 322, second buckling claw; 331, buckling arm; 331a, second elastic arm; 331b, third elastic arm; 332, buckling slot; 40, fixing member; 41, first fixing ring; 42, second fixing ring;

[0034] 50, first through hole; 51, first hole; 52, second hole;

[0035] 60, second through hole; 61, third hole; 62, fourth hole;

[0036] 71, auxiliary terminal; 71a, clamping point; 72, rubber plug; 72a, circumferential part; 72b, peg part. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly disposed on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] The embodiments of the present application are further described below in conjunction with the accompanying drawings:

[0041] A high-protection meter includes a first housing 100 and a second housing 200, the second housing 200 enters the first housing 100 laterally and is buckled with the first housing 100, wherein:

[0042] The first housing 100 includes a cover 110 and a side cover 120. The cover 110 has a first opening 111 and a second opening 112 that communicate with each other. The first opening 111 faces the side of the cover 110. The side cover 120 is detachably installed in the first opening 111 of the cover 110.

[0043] The second housing 200 includes a closure 210, which is connected to the housing cover 110 to close the second opening 112;

[0044] It also includes a fastening assembly 300, which includes a fastening rail portion 310 and a fastening claw portion 320. The fastening rail portion 310 is constructed on the inner side wall of the cover 110 and extends in the depth direction of the cover 110. The fastening claw portion 320 is constructed on the second housing 200 and is fastened to the fastening rail portion 310.

[0045] like Figure 1 As shown, the meter is rectangular in shape and is shortest in the left-right direction. The first housing 100 and the second housing 200 are distributed vertically. The internal space of the first housing 100 is used to prevent electrical components such as circuit boards. The cover 110 includes a front plate 113, a rear plate 114, a right plate 115, and an upper plate 116. The left side of the cover 110 is the first opening 111, and the lower side is the second opening 112.

[0046] The second housing 200 moves from the left side of the cover 110 to the right and enters the cover 110. The closing member 210 of the second housing 200 connects with the cover 110, thereby closing the second opening 112.

[0047] The side cover 120 is the left side plate of the first housing 100. After the side cover 120 is installed on the housing cover 110, the first opening 111 is closed, and then the two are combined to form a meter.

[0048] like Figure 3 As shown, the inner wall of the front plate 113 of the cover 110 is provided with a fastening rail portion 310. The fastening rail portion 310 extends horizontally from the first opening 111 toward the right plate 115, and a convex rail 310a is formed on the upper side of the fastening rail portion 310, as shown. Figure 4 As shown, the second housing 200 has latching claw portions 320 on both its left and right sides, and a protruding claw 320a is formed on the lower side of each latching claw portion 320. (Refer to...) Figure 2 During installation, the claw part 320 slides against the rail part 310, and the protruding claw 320a cooperates with the protruding rail 310a to achieve the fastening of the first housing 100 and the second housing 200.

[0049] By setting the meter structure with side entry, the waterproof design is more reasonable. With the fastening component 300, the cover 110 can be well closed and assembled, thus bringing a good waterproof effect. On the other hand, it can effectively reduce the length of the meter in the left and right direction, thereby increasing the number of meters that can be installed per unit length.

[0050] In another embodiment, the fastening assembly 300 includes a first fastening rail 311 and a first fastening claw 321, the first fastening rail 311 is configured on the inner side wall of the second opening 112 of the cover 110.

[0051] The cover 110 is formed with a long plate 110a, the fastening assembly 300 includes a second fastening rail 312 and a second fastening claw 322, the second fastening rail 312 is located on one side of the inner side wall of the long plate 110a.

[0052] As shown in FIG. 1, the inner side wall of the front plate 113 of the cover 110 is configured with the first fastening rail 311, the inner side wall of the rear plate 114 is configured with the second fastening rail 312, the first fastening rail 311 and the second fastening rail 312 horizontally extend from the first opening 111 to the right plate 115, and the upper side of the first fastening rail 311 and the second fastening rail 312 are formed with a convex rail 310a. Figure 3 As shown in FIG. 1, the right side of the second housing 200 is configured with the first fastening claw 321 matched with the first fastening rail 311, and the left side of the second housing 200 is configured with the second fastening claw 322 matched with the second fastening rail 312, the first fastening claw 321 is higher than the second fastening claw 322 in horizontal height, and the lower side of the first fastening claw 321 and the second fastening claw 322 is formed with a convex claw 320a.

[0053] Figure 4 In the installation process, the first fastening rail 311 and the first fastening claw 321 are in close contact and slide, the second fastening rail 312 and the second fastening claw 322 are in close contact and slide, and the convex claw 320a and the convex rail 310a are matched to realize the fastening of the first housing 100 and the second housing 200. Figure 2 As shown in FIG. 1, the front plate 113, the right plate 115 and the rear plate 114 gradually increase in length, the part of the rear plate 114 longer than the right plate 115 is the long plate 110a, the first fastening rail 311 is located at the lower end of the inner side wall of the front plate 113, and the second fastening rail 312 is located at the upper side of the inner side wall of the long plate 110a, and the second fastening rail 312 is slightly higher than the horizontal position of the lower end of the right plate 115; in another embodiment, the rear plate 114 is a long plate 110a as a whole, and the second fastening rail 312 is located at the lower side of the inner side wall of the long plate 110a; by setting the first fastening rail 311 at the lower end of the front plate 113 and the second fastening rail 312 at the lower side of the long plate 110a, the installation of the second housing 200 can be better realized, and the first housing 100 can be better folded by the second housing 200 in reverse, thereby better realizing the effect of assembly and folding.

[0054] Figure 3 In another embodiment, the fastening assembly 300 includes a fastening arm 331 configured on the second housing 200, and a fastening groove 332 configured on the inner side wall of the cover 110 and matched with the fastening arm 331.

[0055] In another embodiment, the fastening assembly 300 includes a fastening arm 331 configured on the second housing 200, and a fastening groove 332 configured on the inner side wall of the cover 110 and matched with the fastening arm 331. ​​

[0056] As shown in Figure 1 , the buckle arm 331 horizontally extends in the left-right direction, and includes a second elastic arm 331a and a third elastic arm 331b, which have elastic potential energy in the deformed state and are respectively located on the front and rear sides of the second shell 200. The buckle groove 332 is arranged in the inner wall of the shell cover 110. After the second shell 200 enters the corresponding position of the shell cover 110, the buckle arm 331 is buckled with the buckle groove 332, thereby realizing the fixation of the shell cover 110 and the second shell 200.

[0057] The buckle arm 331 is connected with the buckle claw part 320. The inner wall of the shell cover 110 is further provided with a sub-rail 110b. The buckle rail part 310 and the sub-rail 110b form a track. The buckle claw part 320 is connected with the track in cooperation with the buckle arm 331.

[0058] As shown in Figure 4 , the second elastic arm 331a is connected with the first buckle claw 321 and extends in the same direction, and the third elastic arm 331b is connected with the second buckle claw 322 and extends in the same direction. As shown in Figure 3 , the sub-rail 110b is located on the upper side of the buckle rail part 310 and protrudes from the inner wall of the shell cover 110. The sub-rail 110b, the first buckle rail 311 and the second buckle rail 312 protrude from the inner wall of the shell cover 110 and form a track from the first opening 111 to the inside of the shell cover 110. Referring to Figure 2 , the first buckle claw 321 is slidingly connected with the first buckle rail 311 and buckled, the second buckle claw 322 is slidingly connected with the second buckle rail 312 and buckled, and the upper sides of the second elastic arm 331a and the third elastic arm 331b are slidingly connected with the lower side of the sub-rail 110b. By cooperating the buckle rail part 310 with the sub-rail 110b, the buckle arm 331 and the buckle claw part 320 are limited, so that the overall connection structure is more stable and has a good folding effect. On the other hand, the gap between the second shell 200 and the first shell 100 is more airtight, which greatly improves the waterproof effect.

[0059] In addition, in another embodiment, the second shell 200 includes a terminal seat 220 and a terminal cover 230. The terminal seat 220 includes a first structure 220a and a second structure 220b. The first structure 220a of the terminal seat 220 is arranged in the terminal cover 230. The first structure 220a of the terminal seat 220 is buckled with the terminal cover 230. The buckle claw part 320 is formed on the second structure 220b of the terminal seat 220.

[0060] As shown in Figure 5 , the first structure 220a on the lower side of the terminal seat 220 is connected with the terminal cover 230 and located in the terminal cover 230. The second structure 220b on the upper side is provided with the buckle claw part 320 and the buckle arm 331, thereby being connected with the shell cover 110. The left and right sides of the first structure 220a are respectively provided with a fourth elastic arm 228 and a fifth elastic arm 229. The buckling directions of the fourth elastic arm 228 and the fifth elastic arm 229 are oppositely arranged. As shown inFigure 6 As shown, the left and right sides of the terminal cover 230 also have grooves that respectively engage with the fourth elastic arm 228 and the fifth elastic arm 229, for reference. Figure 4 During installation, the terminal block 220 and the terminal cover 230 move vertically relative to each other, thereby achieving a locking mechanism.

[0061] In another embodiment, the closure 210 includes a third latch 223 constructed on the terminal base 220, a fourth latch 224 constructed on the terminal cover 230, and a third latch rail 225 formed on the inner wall of the housing cover 110. The third latch 223 and the fourth latch 224 extend in the same direction, and the third latch rail 225 engages the third latch 223 and the fourth latch 224.

[0062] like Figure 5 As shown, the third latch 223 is constructed on the rear side of the terminal block 220 and extends in the left-right direction, as... Figure 6 As shown, the fourth latch 224 is constructed on the rear side of the terminal cover 230 and extends in the left-right direction. Similarly, a recess 2312 is also constructed on the rear side of the terminal cover 230 at the position of the fourth latch 224. (See reference) Figure 4 Terminal base 220 is installed on terminal cover 230 from top to bottom. Third latch 223 is located in recess 2312. Third latch 223 and fourth latch 224 form a unified structure and engage with third latch rail 225.

[0063] like Figure 7 As shown, the snap-fit ​​opening of the third snap-fit ​​rail 225 faces downward, and the snap-fit ​​direction of the second snap-fit ​​rail 312 faces upward, thus forming a reverse engagement; the cover 110 is also constructed with a fourth snap-fit ​​rail 226, and the terminal cover 230 is constructed with a fifth snap-fit ​​claw 227. The fourth snap-fit ​​rail 226 and the fifth snap-fit ​​claw 227 are snapped together, and the fourth snap-fit ​​rail 226 faces upward, thus forming a reverse engagement with the third snap-fit ​​rail 225.

[0064] In another embodiment, the terminal cover 230 includes an end face that contacts the first housing 100, and the closure 210 includes a stepped portion 211 formed on the end face.

[0065] like Figure 6 As shown, the stepped portion 211 of the terminal cover 230 is located on the upper end face, including a first stepped surface and a second stepped surface. The first stepped surface is lower than the second stepped surface. (Refer to...) Figure 2 and Figure 3 The upper end face of the terminal cover 230 is connected to the lower end face of the shell cover 110, and the lower end of the shell cover 110 is connected to the first stepped surface and the second stepped surface respectively, thereby forming a good waterproof structure.

[0066] In addition, in another embodiment, the terminal cover 230 comprises a body 231 and a cover 232, the first structure 220a of the terminal seat 220 and the body 231 of the terminal cover 230 are provided with a fixing member 40 for fixing the terminal sleeve, the body 231 is provided with a first interface 2311 at the corresponding position of the fixing member 40, the terminal seat 220 and the body 231 of the terminal cover 230 are cooperatively formed with a first through hole 50, the first through hole 50 is detachably installed with an auxiliary terminal 71, the first interface 2311 and the external opening of the first through hole 50 are located in the space enclosed by the cover 232 and the body 231, the body 231 is formed with a second through hole 60, the second through hole 60 is provided with a movable rubber plug 72, and the cover 232 is configured with a contact 2321 capable of contacting the rubber plug 72.

[0067] The first through hole 50 comprises a first hole 51 formed in the terminal seat 220 and a second hole 52 formed in the body 231, the auxiliary terminal 71 is arranged in the first hole 51, one end of the auxiliary terminal 71 is configured with a clamping point 71a, and the terminal seat 220 is formed with a first elastic arm 221 at the position of the internal opening of the first hole 51, which cooperates with the clamping point 71a.

[0068] As shown in Figure 1 , the cover 232 of the terminal cover 230 is located at the lower side of the body 231, one end of the cover 232 is rotationally connected with the body 231, and the other end is connected with the body 231 by a bolt, as shown in Figure 7 , the cover 232 and the body 231 enclose a certain space, and the lower side of the cover 232 is provided with a second interface 2322 for connecting an external device;

[0069] As shown in Figure 8 , the fixing member 40 comprises a first fixing ring 41 at the lower side of the first structure 220a of the terminal seat 220 and a second fixing ring 42 at the inner side of the body 231 of the terminal cover 230, the first fixing ring 41 and the second fixing ring 42 are arranged in an upper and lower corresponding manner to position the terminal sleeve, as shown in Figure 6 , the rear side of the second fixing ring 42 is provided with a first interface 2311 penetrating the body 231;

[0070] As shown in Figure 8 , the first hole 51 penetrates the terminal seat 220 in an up and down direction, the second hole 52 penetrates the body 231 in an up and down direction, the diameter of the first hole 51 is larger than that of the second hole 52, and the lower end of the auxiliary terminal 71 is limited by the diameter cooperation of the first hole 51 and the second hole 52; the upper end of the auxiliary terminal 71 is recessed to form a clamping point 71a, the first elastic arm 221 is located at the upper side of the terminal seat 220 and is aligned with the upper opening of the first hole 51, and the first elastic arm 221 cooperates with the clamping point 71a by position cooperation to limit the upper side of the auxiliary terminal 71; in combination with Figure 7As shown, the external opening on the lower side of the first through hole 50 is located within the space formed by the cover 232 and the body 231.

[0071] like Figure 9 As shown, the second through hole 60 horizontally penetrates the body 231 and the terminal block 220 in the front-back direction. The second through hole 60 includes a third hole 61 penetrating the terminal block 220 and a fourth hole 62 penetrating the body 231. The rubber plug 72 is installed in the third hole 61. The periphery 72a of the rubber plug 72 is connected to the terminal block 220 to form a positioning. The plug portion 72b of the rubber plug 72 can move back and forth in the third hole 61. A baffle 222 is provided in the terminal block 220. The electrical switch is located between the baffle 222 and the plug portion 72b. The front elastic end of the electrical switch is connected to the plug 72b. A contact 2321 is provided on the upper side of the cover 232 corresponding to the position of the rubber plug 72. When the cover 232 is closed, the contact 2321 can enter the fourth hole 62 and contact the rubber plug 72 in the third hole 61, causing the plug 72b to move backward and act on the elastic end, thereby opening the electrical switch. When the cover 232 is open, the rubber plug 72 is not subjected to the stress of the contact 2321, and therefore the electrical switch is not subjected to external force, and the electrical switch is in the closed state.

[0072] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of protection of this invention.

Claims

1. A high security meter, characterized by, The application relates to a double-shell mobile phone, which comprises a first shell (100) and a second shell (200) which enters the first shell (100) laterally and is buckled with the first shell (100), wherein: the first shell (100) comprises a shell cover (110) and a side cover (120), the shell cover (110) is formed with a first opening (111) and a second opening (112) which are communicated, the first opening (111) is towards the side edge of the shell cover (110), and the side cover (120) is detachably mounted on the first opening (111) of the shell cover (110); the second shell (200) comprises a closure (210) which is connected with the shell cover (110) to close the second opening (112); the application further comprises a buckling assembly (300) which comprises a buckling rail part (310) and a buckling claw part (320), the buckling rail part (310) is arranged on the inner side wall of the shell cover (110) and extends in the depth direction of the shell cover (110), and the buckling claw part (320) is arranged on the second shell (200) and is buckled with the buckling rail part (310); the buckling assembly (300) comprises a first buckling rail (311) and a first buckling claw (321), the first buckling rail (311) is arranged on the inner side wall of the second opening (112) of the front plate (113) of the shell cover (110), the first buckling claw (321) is arranged on the right side of the second shell (200) and is slidably connected with the first buckling rail (311) and buckled; the rear plate (114) of the shell cover (110) is formed with a long plate (110a), the part of the rear plate of the shell cover (110) which is longer than the right plate (115) is the long plate (110a), the buckling assembly (300) comprises a second buckling rail (312) and a second buckling claw (322), the second buckling rail (312) is arranged on one side of the inner side wall of the long plate (110a), the second buckling claw (322) is arranged on the left side of the second shell (200) and is slidably connected with the second buckling rail (312) and buckled, and the horizontal height of the first buckling claw (321) is higher than that of the second buckling claw (322); the buckling assembly (300) comprises a buckling arm (331) arranged on the second shell (200) and a buckling groove (332) arranged on the inner side wall of the shell cover (110) and matched with the buckling arm (331). The buckle arm (331) connects the buckle claw part (320), the inner wall of the shell cover (110) is further provided with a sub-track (110b), the buckle track part (310) and the sub-track (110b) form a track, and the buckle claw part (320) is connected with the track in cooperation with the buckle arm (331), wherein the buckle arm (331) comprises a second elastic arm (331a) connected with the first buckle claw (321) and extending in the same direction and a third elastic arm (331b) connected with the second buckle claw (322) and extending in the same direction, and the upper sides of the two are slidably connected with the lower side of the sub-track (110b).

2. A high protection meter according to claim 1, characterized in that: The second shell (200) comprises a terminal seat (220) and a terminal cover (230), the terminal seat (220) comprises a first structure (220a) and a second structure (220b), the first structure (220a) of the terminal seat (220) is arranged in the terminal cover (230), the first structure (220a) of the terminal seat (220) is buckled with the terminal cover (230), and the buckle claw part (320) is formed in the second structure (220b) of the terminal seat (220).

3. A high containment meter according to claim 2, wherein: The closure (210) comprises a third buckle claw (223) arranged in the terminal seat (220), a fourth buckle claw (224) arranged in the terminal cover (230), and a third buckle track (225) formed in the inner wall of the shell cover (110), the third buckle claw (223) and the fourth buckle claw (224) extend in the same direction, and the third buckle track (225) buckles the third buckle claw (223) and the fourth buckle claw (224).

4. A high containment meter according to claim 3, wherein: The terminal cover (230) comprises an end surface connected with the first shell (100), and the closure (210) comprises a stepped part (211) formed in the end surface.

5. A high containment meter according to claim 2, wherein: The terminal cover (230) comprises a body (231) and a cover body (232), a fixing member (40) for fixing a terminal sleeve is arranged between the first structure (220a) of the terminal seat (220) and the body (231) of the terminal cover (230), the body (231) is provided with a first interface (2311) at a position corresponding to the fixing member (40), the terminal seat (220) and the body (231) of the terminal cover (230) are cooperatively provided with a first through hole (50), a detachable auxiliary terminal (71) is arranged in the first through hole (50), the first interface (2311) and an external opening of the first through hole (50) are located in a space enclosed by the cover body (232) and the body (231), the body (231) is provided with a second through hole (60), a movable rubber plug (72) is arranged in the second through hole (60), and the cover body (232) is provided with a contact (2321) in contact with the rubber plug (72).

6. A high containment meter according to claim 5, wherein: The first through hole (50) includes a first hole (51) formed in the terminal seat (220) and a second hole (52) formed in the body (231), the auxiliary terminal (71) is arranged in the first hole (51), one end of the auxiliary terminal (71) is configured with a clamping point (71a), and the terminal seat (220) is formed with a first elastic arm (221) matched with the clamping point (71a) at the inner opening position of the first hole (51).

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