Electric meter

Abstract

The utility model belongs to the field of electrical technology, and discloses an ammeter, which comprises a base, an internal element and a fixing piece, and is characterized in that the base is provided with a limiting structure, a first limiting groove and a plugging part; the internal element is arranged in the base; the fixing part is partially clamped in the first limiting groove and is matched with the limiting structure, the limiting structure is used for limiting the fixing part to be separated from the first limiting groove, at least one side of the fixing part is concavely provided with a second limiting groove, and the second limiting groove is clamped with the inserting part; and the fixing piece is pressed against the internal element. After the fixing piece is clamped in the first limiting groove, due to the limiting effect of the limiting structure, the fixing piece can be prevented from being disengaged from the first limiting groove, and it is guaranteed that the fixing piece is firmly installed on the base. The clamping of the inserting part and the second limiting groove can further improve the limiting degree of the fixing piece, reduce shaking, improve the installation stability of the fixing piece on the base, enable the fixing piece to abut against the internal element more stably and firmly, prevent the internal element from moving in the electric meter after being installed, and ensure that the electric meter works stably and reliably.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical technology field especially relates to a meter. BACKGROUND

[0002] The mutual inductor is widely used in the meter, taking a certain guide rail type electric energy meter as an example, it includes base, upper shell, mutual inductor and zero line copper bar. The upper cover is buckled on the base to form the installation cavity, and the mutual inductor and zero line copper bar are located in the installation cavity. In order to make the guide rail meter work stably and reliably, the stability of the mutual inductor and zero line copper bar after installation needs to be ensured.

[0003] In the prior art, the groove is arranged on the base for the mutual inductor and zero line copper bar, after the mutual inductor and zero line copper bar are clamped in the corresponding groove of the base, the pressing plate is used to fix the mutual inductor and zero line copper bar in the base, then the upper cover is buckled on the base, the upper shell and the base are connected and fixed through the buckle structure, and the mutual inductor and zero line copper bar can be limited in the guide rail meter.

[0004] The prior art has the following defects: the connection stability of the existing pressing plate in the base is poor, it is difficult to ensure the stability of the mutual inductor and zero line copper bar after installation, displacement is prone to occur during use, and then contact failure and other faults are caused. Moreover, before the upper cover is buckled, the installation of the mutual inductor and zero line copper bar on the base is not firm, the position of the mutual inductor and zero line copper bar on the base deviates before the upper cover is not buckled, and it is difficult to ensure the installation position precision of the mutual inductor and zero line copper bar. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a meter, which can ensure the installation stability of internal elements and ensure the stable and reliable work of the meter.

[0006] To achieve the purpose, the utility model adopts the following technical scheme:

[0007] A meter is provided, which comprises:

[0008] A base is provided with a limiting structure, a first limiting groove and a plug-in part;

[0009] Internal elements are arranged in the base;

[0010] A fixing part is partially clamped in the first limiting groove and cooperates with the limiting structure, the limiting structure is used for limiting the fixing part from separating from the first limiting groove, at least one side of the fixing part is recessed with a second limiting groove, the second limiting groove is clamped with the plug-in part; and the fixing part is pressed against the internal elements.

[0011] As a preferred scheme of the meter provided by the utility model, the fixing part comprises an installation plate and at least one pressing plate protruding on the installation plate.

[0012] The mounting plate is clamped in the first limiting groove and matched with the limiting structure, and the second limiting groove is arranged on the mounting plate; and the pressing plate is pressed against the internal component.

[0013] As a preferred scheme of the electric meter provided by the utility model, the pressing plate is provided with a butt joint rib, and the extension direction of the butt joint rib is the same as the protruding direction of the pressing plate relative to the mounting plate.

[0014] As a preferred scheme of the electric meter provided by the utility model, the limiting structure comprises buckles arranged on opposite inner walls of the base, and the mounting plate is provided with a clamping tongue at each end.

[0015] The buckle is located on the side of the mounting plate away from the internal component, and the buckle is clamped with the clamping tongue.

[0016] As a preferred scheme of the electric meter provided by the utility model, the side of the mounting plate away from the pressing plate is concave and provided with a groove structure.

[0017] And / or, the second limiting groove is arranged on both sides of the mounting plate, and the second limiting grooves on both sides are arranged in a staggered manner.

[0018] As a preferred scheme of the electric meter provided by the utility model, a plurality of limiting plates are arranged in the base in a spaced manner, the limiting plate comprises a first supporting plate and a first protruding part and a second protruding part arranged on the first supporting plate in a spaced manner, and the first protruding part, the second protruding part and the first supporting plate form the first limiting groove.

[0019] The first protruding part of at least one limiting plate is the plug-in part; and / or the second protruding part of at least one limiting plate is the plug-in part.

[0020] As a preferred scheme of the electric meter provided by the utility model, the internal component comprises a mutual inductor and a zero line connecting row; the mutual inductor comprises a mutual inductor main body and a mutual inductor connecting row arranged on the mutual inductor main body.

[0021] The base is provided with a first clamping space, a second clamping space and a third clamping space;

[0022] The mutual inductor main body is clamped in the first clamping space, the mutual inductor connecting row is clamped in the second clamping space; and the zero line connecting row is clamped in the third clamping space.

[0023] The fixing part is pressed against the mutual inductor connecting row and the zero line connecting row.

[0024] As a preferred scheme of the utility model provides an electric meter, the zero line connecting row and the base one is provided with the second clamping groove on the other, the limit protrusion and the second clamping groove correspond and clasp.

[0025] The first end of the fixing piece is abutted to the second zero line plate and is provided with a first clamping groove, the first clamping groove is clamped with the first contact plate, and the second end of the fixing piece is provided with a limiting through hole for penetrating and limiting the second contact plate.

[0026] As a preferred scheme of the utility model provides an electric meter, the zero line connecting row and the base one is provided with the second clamping groove on the other, the limit protrusion and the second clamping groove correspond and clasp.

[0027] As a preferred scheme of the utility model provides an electric meter, the zero line connecting row and the base one is provided with the second clamping groove on the other, the limit protrusion and the second clamping groove correspond and clasp.

[0028] And / or, the bottom wall of the base is provided with a second supporting plate, a plurality of limiting blocks are arranged on the second supporting plate at intervals, the limiting blocks are two groups, and the second supporting plate is surrounded to form the second clamping space between the two limiting blocks in each group.

[0029] And / or, the bottom wall of the base is provided with a limit boss, and the third clamping space is formed by recessing the limit boss.

[0030] The utility model has the advantages of:

[0031] The electric meter provided by the utility model is provided with the first limiting groove for clamping the fixing piece and the limiting structure for cooperating with the fixing piece on the base, after the fixing piece is clamped in the first limiting groove, the fixing piece can be prevented from coming out of the first limiting groove due to the limiting effect of the limiting structure, so that the fixing piece is firmly installed on the base. By providing the plug-in part on the base and the second limiting groove clamped with the plug-in part on at least one side of the fixing piece, the limiting degree of the fixing piece can be further improved, the fixing piece can be prevented from shaking after being installed on the base, the installation stability of the fixing piece on the base is effectively improved, so that the fixing piece can more stably and firmly abut against the internal elements in the base, the stability of the internal elements after being installed in the base is ensured, the internal elements can be prevented from moving after being installed in the electric meter, and the electric meter can stably and reliably work. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0033] Figure 1 This is an exploded view of the electricity meter provided in a specific embodiment of this utility model;

[0034] Figure 2 This is an isometric view of the current transformer and neutral connection bar of the electricity meter after installation according to a specific embodiment of this utility model;

[0035] Figure 3 This is a top view of the current transformer and neutral wire connection bar of the electricity meter provided in a specific embodiment of this utility model after installation;

[0036] Figure 4 This is a top view of the base of the electricity meter provided in a specific embodiment of this utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the current transformer in the electricity meter provided in a specific embodiment of this utility model;

[0038] Figure 6 This is a first cross-sectional view of the electricity meter provided in a specific embodiment of this utility model;

[0039] Figure 7 This is a first view of the first fastener provided in a specific embodiment of this utility model;

[0040] Figure 8 This is a second view of the first fastener provided in a specific embodiment of the present utility model;

[0041] Figure 9 This is a second cross-sectional view of the electricity meter provided in a specific embodiment of this utility model;

[0042] Figure 10 This is a first view of the second fastener provided in a specific embodiment of the present utility model;

[0043] Figure 11 This is a second view of the second fastener provided in a specific embodiment of the present utility model;

[0044] Figure 12 This is a schematic diagram of the structure of the neutral wire connection bar of the electricity meter provided in a specific embodiment of this utility model;

[0045] Figure 13is the third cross-sectional view of the electric meter provided by the embodiment of the utility model;

[0046] Figure 14 is the first axonometric view of the base of the electric meter provided by the embodiment of the utility model;

[0047] Figure 15 is Figure 14 The partial close-up view of A in the middle;

[0048] Figure 16 is the second axonometric view of the base of the electric meter provided by the embodiment of the utility model;

[0049] Figure 17 is Figure 16 The partial close-up view of B in the middle.

[0050] In the figure,

[0051] 1, base; 2, mutual inductor; 3, zero line connecting row; 4, fixing piece;

[0052] 11, first clamping space; 12, second clamping space; 13, third clamping space; 14, limiting structure; 15, plug-in part; 16, limiting plate; 17, limiting boss; 18, limiting protrusion; 19, second supporting plate; 20, limiting block;

[0053] 160, first limiting groove; 161, first supporting plate; 162, first convex part; 163, second convex part;

[0054] 1610, first limiting surface; 1620, second limiting surface; 1630, third limiting surface;

[0055] 21, mutual inductor main body; 22, mutual inductor connecting row;

[0056] 31, connecting row main body; 32, contact structure;

[0057] 311, first zero line plate; 312, second zero line plate; 3121, second clamping groove;

[0058] 321, first contact plate; 322, second contact plate;

[0059] 41, mounting plate; 42, abutting plate; 420, abutting rib;

[0060] 421, first abutting plate; 422, second abutting plate;

[0061] 411, second limiting groove; 412, groove structure; 413, clamping tongue; 414, limiting through hole;

[0062] 4221, first clamping groove. DETAILED DESCRIPTION

[0063] The utility model will be described further in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0064] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0065] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0066] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0067] In the embodiment, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the utility model generally represents an "or" relationship between the front and rear associated objects.

[0068] In the embodiments of the utility model, the same reference signs represent the same parts, and in order to be brief, the detailed description of the same parts is omitted in different embodiments.

[0069] As Figure 1 , Figure 2 and Figure 3 shown, the embodiment provides an electric meter, comprising a base 1, internal components and a fixing member 4, which can improve the installation firmness of the fixing member 4 on the base 1, and further ensure the installation stability of the internal components, and ensure the stable and reliable work of the electric meter.

[0070] The electric meter example can be a track meter or other forms of electric meter, and in the embodiment, the track meter is taken as an example for description.

[0071] In the embodiment, the base 1 is provided with a limiting structure 14, a first limiting groove 160 and a plug-in part 15; the internal components are arranged in the base 1; the fixing member 4 is partially clamped in the first limiting groove 160, and cooperates with the limiting structure 14, the limiting structure 14 is used for limiting the fixing member 4 from separating from the first limiting groove 160, at least one side of the fixing member 4 is recessed with a second limiting groove 411, the second limiting groove 411 is clamped with the plug-in part 15; and the fixing member 4 is pressed against the internal components.

[0072] The electric meter (taking the track meter as an example) provided by the embodiment can prevent the fixing member 4 from separating from the first limiting groove 160 due to the limiting effect of the limiting structure 14 after the fixing member 4 is clamped in the first limiting groove 160, and ensure the installation firmness of the fixing member 4 on the base 1. By arranging the plug-in part 15 on the base 1 and arranging the second limiting groove 411 clamped with the plug-in part 15 on at least one side of the fixing member 4, the limiting degree of the fixing member 4 can be further improved, the fixing member 4 can be prevented from shaking after being installed on the base 1, the installation stability of the fixing member 4 on the base 1 is effectively improved, so that the fixing member 4 can more stably and firmly press against the internal components in the base 1, the stability of the internal components after being installed in the base 1 is ensured, the internal components can be prevented from moving in the electric meter after being installed, and the electric meter can work stably and reliably.

[0073] Exemplarily, the internal components include a mutual inductor 2 and a zero line connecting row 3, of course, in other embodiments, the internal components can be other electrical components, and are not limited to the mutual inductor 2 and the zero line connecting row 3.

[0074] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4The base 1 is provided with a first clamping space 11, a second clamping space 12 and a third clamping space 13; the mutual inductor 2 comprises a mutual inductor body 21 and a mutual inductor connecting row 22 arranged on the mutual inductor body 21, the mutual inductor body 21 is clamped in the first clamping space 11, and the mutual inductor connecting row 22 is clamped in the second clamping space 12; the zero line connecting row 3 is clamped in the third clamping space 13; the fixing member 4 is connected to the base 1, and the fixing member 4 presses the mutual inductor connecting row 22 and the zero line connecting row 3 against the base 1.

[0075] The electric meter (taking the guide rail meter as an example) provided by the embodiment of the application can position and clamp the mutual inductor body 21, the mutual inductor connecting row 22 on the mutual inductor body 21 and the zero line connecting row 3 respectively by arranging the first clamping space 11, the second clamping space 12 and the third clamping space 13 on the base 1 of the electric meter, and after the mutual inductor body 21, the mutual inductor connecting row 22 and the zero line connecting row 3 are clamped in the corresponding clamping spaces, the fixing member 4 is used to press the mutual inductor connecting row 22 and the zero line connecting row 3 against the base 1, so that the mutual inductor connecting row 22 is firmly limited in the second clamping space 12 and the zero line connecting row 3 is firmly limited in the third clamping space 13. While ensuring the accurate installation position of the mutual inductor 2 and the zero line connecting row 3, the stability after installation can also be improved, the mutual inductor 2 and the zero line connecting row 3 after installation can be prevented from moving in the guide rail meter, and the guide rail meter can work stably and reliably.

[0076] In the embodiment, the zero line connecting row 3 is a copper row, and the mutual inductor connecting row 22 is also a copper row, and the conductivity is good.

[0077] As shown in Figure 5 , it is a structural schematic view of the mutual inductor 2, wherein the mutual inductor connecting row 22 is installed on the mutual inductor body 21 and protrudes from both ends of the mutual inductor body 21. Exemplarily, the mutual inductor 2 has three mutual inductor connecting rows 22, and of course, it can also be other quantities, which are not limited here. For the convenience of description, the part of the mutual inductor connecting row 22 protruding from the first end of the mutual inductor body 21 is defined as a first connecting plate, and the part of the mutual inductor connecting row 22 protruding from the second end of the mutual inductor body 21 is defined as a second connecting plate. The base 1 is provided with a second clamping space 12 corresponding to each first connecting plate and each second connecting plate, so as to improve the positioning accuracy and limiting stability of the mutual inductor 2. Specifically, the fixing member 4 is pressed on the first connecting plate and the second connecting plate.

[0078] Referring to Figure 1 , Figure 2 and Figure 3 , the fixing member 4 is arranged at intervals and has two, one of which is pressed on the first connecting plate of the mutual inductor connecting row 22, and the other is pressed on the second connecting plate of the mutual inductor connecting row 22. The zero line connecting row 3 is pressed on the base 1 by one of the fixing members 4.

[0079] As shown in Figure 1 , Figure 6 and Figure 9 , the fixing member 4 comprises a mounting plate 41 and at least one pressing plate 42 protruding from the mounting plate 41; the mounting plate 41 is clamped in the first limiting groove 160 and cooperates with the limiting structure 14, and the second limiting groove 411 is arranged on the mounting plate 41; the pressing plate 42 presses on the internal components, specifically on the mutual inductor connecting row 22 and the zero line connecting row 3. The mounting plate 41 can realize the connection between the fixing member 4 and the base 1, and make the fixing member 4 firmly limited on the base 1, and the pressing plate 42 can accurately press on the mutual inductor connecting row 22 and the zero line connecting row 3.

[0080] Further, the plurality of pressing plates 42 on the fixing member 4 comprises a first pressing plate 421 and a second pressing plate 422. The first pressing plate 421 is used to press on the mutual inductor connecting row 22, and the number and distribution thereof are consistent with those of the mutual inductor connecting row 22; the second pressing plate 42 is used to press on the zero line connecting row 3, and the number and distribution thereof are consistent with those of the zero line connecting row 3.

[0081] For the convenience of description, the two fixing members 4 in the embodiment are defined as a first fixing member and a second fixing member, both of which are connected to the base 1, the first pressing plate 421 of the first fixing member presses on the first connecting plate of the mutual inductor connecting row 22, the first pressing plate 421 of the second fixing member presses on the second connecting plate of the mutual inductor connecting row 22, and the second pressing plate 422 of one of the first fixing member and the second fixing member presses on the zero line connecting row 3. The first fixing member and the second fixing member are arranged for the first connecting plate and the second connecting plate at both ends of the mutual inductor connecting row 22, so as to press the first connecting plate and the second connecting plate on the base 1, which can ensure that the mutual inductor connecting row 22 is stable and reliable, and will not cause poor contact due to displacement in use. At the same time, the first fixing member and the second fixing member are arranged to limit the mutual inductor connecting row 22, which can achieve the purpose of saving materials.

[0082] Among them, the number and distribution of the first pressing plate 421 on the first fixing member are consistent with the number and distribution of the first connecting plate, so as to limit the first connecting plate one by one. The number and distribution of the first pressing plate 421 on the second fixing member are consistent with the number and distribution of the second connecting plate, so as to limit the second connecting plate one by one.

[0083] In this embodiment, the second pressing plate 422 is arranged on at least one of the first fixing member and the second fixing member to limit the position of the zero line connecting row 3 on the base 1. For example, the second pressing plate 422 can be arranged on the mounting plate 41 of both the first fixing member and the second fixing member. In use, according to the specific position of the zero line connecting row 3, the second pressing plate 422 on one of the first fixing member and the second fixing member can press the zero line connecting row 3, which can be compatible with the design of the subsequent derivative version of the guide rail table. Figure 9 In this embodiment, the second pressing plate 422 of the second fixing member is used to press the zero line connecting row 3.

[0084] As shown in Figure 12 and Figure 13 , the zero line connecting row 3 includes a connecting row body 31 and a contact structure 32. The connecting row body 31 includes a first zero line plate 311 and a second zero line plate 312 connected by bending. The first zero line plate 311 is inserted into the third clamping space 13, and the second zero line plate 312 is arranged in the same direction as the second connecting plate. The third clamping space 13 is a slot arranged on the base 1. The contact structure 32 includes a first contact plate 321 and a second contact plate 322 connected by bending. The first contact plate 321 is attached to and connected with the second zero line plate 312, and the second contact plate 322 extends away from the second zero line plate 312. The connecting row body 31 and the contact structure 32 are both L-shaped structures.

[0085] As shown in Figure 7 , Figure 8 , Figure 9 and Figure 13 , the first end of the fixing member 4 abuts against the second zero line plate 312 and is provided with a first clamping groove 4221. The first clamping groove 4221 is clamped with the first contact plate 321. The second end of the fixing member 4 is provided with a limiting through hole 414 for limiting the second contact plate 322. Specifically, the pressing plate 42 of the fixing member 4 abuts against the second zero line plate 312. Specifically, the second pressing plate 422 of the fixing member 4 abuts against the second zero line plate 312. The end face of the second pressing plate 422 is recessed and provided with the first clamping groove 4221. The first clamping groove 4221 is clamped with the first contact plate 321 to limit the position of the zero line connecting row 3. The mounting plate 41 is provided with a limiting through hole 414 for limiting the second contact plate 322. Specifically, the limiting through hole 414 is arranged on the mounting plate 41 of both the first fixing member and the second fixing member. The second contact plate 322 is arranged in the limiting through hole 414 of the mounting plate 41 of the second fixing member, which ensures that the position of the second contact plate 322 is accurate and does not shake.

[0086] Since the second pressing plate 422 is arranged on each of the two fixing members 4, and the first clamping groove 4221 is arranged on the second pressing plate 422 of each of the two fixing members 4, and the limiting hole 414 is arranged on the mounting plate 41 of each of the two fixing members 4, the assembly stage is more flexible, and the design of the subsequent derivative model of the guide rail table can be compatible.

[0087] Specifically, since the heights of the first connecting plate and the second connecting plate of the transformer connecting row 22 in the base 1 can be inconsistent, the length of the first pressing plate 421 of the two fixing members 4 can be inconsistent to adapt to the installation height of the first connecting plate and the second connecting plate in the base 1. Referring to Figure 1 、 Figure 7 and Figure 10 , the length of the first pressing plate 421 on the first fixing member is less than the length of the first pressing plate 421 on the second fixing member to adapt to the transformer connecting row 22 in the guide rail table. In other embodiments, the lengths of the first pressing plates 421 on the two fixing members 4 can also be the same, which can be set according to the specific structure of the transformer connecting row 22.

[0088] Referring to Figure 8 and Figure 11 , the abutting rib 420 is protruded on the pressing plate 42, and the extension direction of the abutting rib 420 is the same as the protruding direction of the pressing plate 42 relative to the mounting plate 41, that is, the abutting rib 420 is perpendicular or approximately perpendicular to the transformer connecting row 22 or the zero line connecting row 3 being pressed. By arranging the abutting rib 420, the pressing plate 42 has higher pressing strength and is not easy to deform.

[0089] Referring to Figure 8 and Figure 11 , the recess structure 412 is recessed on the side of the mounting plate 41 away from the pressing plate 42, which can reduce the material required for manufacturing the fixing member 4 while ensuring that the mounting plate 41 has sufficient strength, thereby reducing the cost to a certain extent. Moreover, by arranging the recess structure 412, the mounting plate 41 has certain elastic properties, and when the mounting plate 41 is pressed to make the clamping tongue 413 on the mounting plate 41 clamped with the buckle on the base 1, the mounting plate 41 can adaptively elastically deform to make the clamping tongue 413 and the buckle smoothly clamped.

[0090] In the embodiment, the mounting plate 41 of the fixing member 4 is provided with second limiting grooves 411 on both sides, and the second limiting grooves 411 on both sides are arranged in a staggered manner. Correspondingly, the base 1 is provided with plug-in portions 15 corresponding to both sides of the mounting plate 41, and the plug-in portions 15 are in one-to-one correspondence with the second limiting grooves 411 on both sides to improve the limiting degree of the fixing member 4 and further avoid the shaking of the fixing member 4 after installation. By arranging the second limiting grooves 411 on both sides of the mounting plate 41 in a staggered manner, the limiting effect of the fixing member 4 can be improved. Specifically, in the embodiment, the mounting plate 41 is provided with a clamping tongue 413 at both ends in the length direction and is provided with second limiting grooves 411 at both sides in the width direction, and the second limiting grooves 411 on both sides are arranged in a staggered manner in the length direction of the mounting plate 41.

[0091] As shown in Figure 6 , Figure 7 , Figure 10 and Figure 11 , both ends of the mounting plate 41 of the fixing member 4 are provided with clamping tongues 413, and the limiting structure 14 is a buckle provided on the inner wall of the base 1. Specifically, the opposite inner walls of the base 1 are provided with buckles, the buckles are located on the side of the mounting plate 41 away from the internal components, and the buckles are connected with the clamping tongues 413. When the fixing member 4 is installed, the fixing member 4 is pressed downward relative to the base 1, the clamping tongue 413 slides along the buckle, until the buckle and the clamping tongue 413 are connected, which can prevent the fixing member 4 from moving away from the transformer connection row 22, so that the first connecting plate and the second connecting plate of the transformer connection row 22 are stably limited on the base 1. Specifically, the clamping tongue 413 is arranged at the most end position of the mounting plate 41.

[0092] As shown in Figure 4 , Figure 14 and Figure 16 , a plurality of limiting plates 16 are arranged in the base 1 in a staggered manner, the limiting plate 16 comprises a first supporting plate 161 and a first protruding portion 162 and a second protruding portion 163 arranged on the first supporting plate 161 in a staggered manner, and the first protruding portion 162, the second protruding portion 163 and the first supporting plate 161 form the first limiting groove 160. The first protruding portion 162 of at least one limiting plate 16 is the plug-in portion 15; and / or, the second protruding portion 163 of at least one limiting plate 16 is the plug-in portion 15. By arranging the first protruding portion 162 and the second protruding portion 163 on the first supporting plate 161 in a staggered manner, the first limiting groove 160 can be formed, which is simple in structure and easy to manufacture. Moreover, while forming the first limiting groove 160, the plug-in portion 15 can be formed on the base 1 at the same time, which is more reasonable in structure. While ensuring the connection strength of the base 1 and the fixing member 4, the structure inside the base 1 can be simplified as much as possible, the material usage is reduced, and the internal space of the base 1 is expanded.

[0093] SpecificallyFigure 3 、 Figure 14 and Figure 16 In the base 1, the inner wall is provided with two groups of limiting plates 16, each group including a plurality of limiting plates 16, and each group including three limiting plates 16 as an example, among the three limiting plates 16 at the top, the second protrusion 163 of the leftmost limiting plate 16 is inserted into the second limiting groove 411 on one side of the mounting plate 41 as the insertion part 15, and the first protrusion 162 of the rightmost limiting plate 16 is inserted into the second limiting groove 411 on the other side of the mounting plate 41 as the insertion part 15.

[0094] In this embodiment, the adjacent mutual inductor connecting rows 22 are separated by limiting plates 16 to improve insulation performance. The abutting plate 42 passes through the gap between the limiting plate 16 and the inner wall of the base 1, or the gap between the adjacent limiting plates 16, to abut on the mutual inductor connecting row 22.

[0095] In this embodiment, a first limiting groove 160 is provided on each limiting plate 16, and a first clamping space 11 for clamping the mutual inductor body 21 is formed between the two groups of limiting plates 16. Figure 3 As shown in the drawings, the mutual inductor body 21 is limited between the plurality of two groups of limiting plates 16.

[0096] For ease of description, a first direction, a second direction and a third direction are introduced for description. Among them, the first direction is the arrangement direction of the plurality of mutual inductor connecting rows 22 after the mutual inductor 2 is installed in the base 1; the second direction is the distribution direction of the first end and the second end of the mutual inductor body 21, and the third direction is the height direction of the base 1. Among them, the first direction, the second direction and the third direction are perpendicular to each other.

[0097] In this embodiment, the opposite two inner walls of the base 1 limit the fixing part 4 in the first direction, preventing the fixing part 4 from moving in the first direction.

[0098] Referring to Figure 15 and Figure 17 , the first limiting groove 160 includes a first limiting surface 1610, a second limiting surface 1620 and a third limiting surface 1630, and the first limiting surface 1610 and the second limiting surface 1620 are arranged on the two sides of the mounting plate 41 along the second direction, so as to limit the fixing part 4 in the second direction, preventing the fixing part 4 from moving in the second direction. The limiting structure 14 (buckle) and the third limiting surface 1630 are arranged on the two sides of the mounting plate 41 along the third direction, so as to limit the fixing part 4 in the third direction, preventing the fixing part 4 from moving in the third direction.

[0099] By limiting the fixing part 4 in the first direction, the second direction and the third direction which are perpendicular to each other, it can be ensured that the fixing part 4 does not displace, and has high position accuracy.

[0100] Specifically, referring toFigure 4 and Figure 15 The base 1 is provided with a second supporting plate 19, and a plurality of limiting blocks 20 are arranged on the second supporting plate 19 in a spaced manner. The two limiting blocks 20 in each group are arranged in pairs, and the two limiting blocks 20 in each group and the second supporting plate 19 surround a second clamping space 12 for clamping a first connecting plate and a second connecting plate of the transformer connecting row 22, so as to limit the first connecting plate and the second connecting plate in the first direction. Further, the limiting blocks 20 can be attached to the mounting plate 41 to increase the limiting stability of the fixing member 4 in the second direction. Some of the limiting blocks 20 are connected with the limiting plate 16, so that the base 1 is more stable and reliable in structure.

[0101] The two groups of limiting plates 16 are arranged in a spaced manner in the second direction to limit the transformer main body 21 in the second direction. The two fixing members 4 limit the transformer connecting row 22 in the third direction respectively, and the limiting blocks 20 limit the transformer connecting row 22 in the first direction. In this way, the transformer 2 is limited in the first direction, the second direction and the third direction which are perpendicular to each other.

[0102] Referring to Figure 13 The bottom wall of the base 1 is provided with a limiting boss 17, and the limiting boss 17 is recessed to form a third clamping space 13 for clamping the zero line connecting row 3.

[0103] Alternatively, one of the zero line connecting row 3 and the base 1 is provided with a limiting protrusion 18, and the other of the zero line connecting row 3 and the base 1 is provided with a second clamping groove 3121. The limiting protrusion 18 is clamped with the second clamping groove 3121 to more stably limit the zero line connecting row 3. In the embodiment, referring to Figure 12 The second zero line plate 312 of the zero line connecting row 3 is provided with the above-mentioned second clamping groove 3121, and referring to Figure 4 The base 1 is provided with the above-mentioned limiting protrusion 18. When installing, the second clamping groove 3121 on the zero line connecting row 3 is aligned with the limiting protrusion 18, and the first zero line plate 311 is inserted into the third clamping space 13.

[0104] Further, the second zero line plate 312 is provided with the second clamping groove 3121 on both sides in the first direction, and the base 1 is correspondingly provided with two limiting protrusions 18. The two limiting protrusions 18 are clamped with the two second clamping grooves 3121 one by one to limit the zero line connecting row 3 in the first direction and the second direction. The second pressing plate 422 of the fixing member 4 limits the zero line connecting row 3 in the third direction, so as to limit the zero line connecting row 3 in the first direction, the second direction and the third direction which are perpendicular to each other.

[0105] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. An electricity meter, characterised in that, The utility model relates to a kind of fixed device of internal element, including: Base (1), the base (1) is provided with limiting structure (14), first limiting slot (160) and plug-in part (15); Internal element, set in the base (1); Fixed part (4), part card set in the first limiting slot (160), with the limiting structure (14) cooperation, the limiting structure (14) is used to limit the fixed part (4) to be separated from the first limiting slot (160), at least one side of the fixed part (4) recessed with second limiting slot (411), second limiting slot (411) is clamped with the plug-in part (15);The fixed part (4) is pressed on the internal element.

2. The electricity meter of claim 1, wherein The fixed part (4) includes a mounting plate (41) and at least one pressing plate (42) protruding from the mounting plate (41); The mounting plate (41) is clamped in the first limiting slot (160) and cooperates with the limiting structure (14), and the second limiting slot (411) is provided on the mounting plate (41);The pressing plate (42) is pressed on the internal element.

3. The electricity meter of claim 2, wherein, The pressing plate (42) has a contact rib (420) protruding therefrom, and the extension direction of the contact rib (420) is the same as the protruding direction of the pressing plate (42) relative to the mounting plate (41).

4. The electricity meter of claim 2, wherein, The limiting structure (14) includes buckles provided on opposite inner walls of the base (1), and both ends of the mounting plate (41) protrude with a clamping tongue (413); The buckle is located on the side of the mounting plate (41) away from the internal element, and the buckle is clamped with the clamping tongue (413).

5. The electricity meter of claim 2, wherein, The side of the mounting plate (41) away from the pressing plate (42) is recessed with a groove structure (412); And / or, the second limiting slot (411) is provided on both sides of the mounting plate (41), and the second limiting slots (411) on both sides are arranged in a staggered manner.

6. The electricity meter of claim 1, wherein A plurality of limiting plates (16) are arranged at intervals in the base (1), and the limiting plate (16) includes a first supporting plate (161), a first protrusion (162) and a second protrusion (163) protruding at intervals from the first supporting plate (161), and the first protrusion (162), the second protrusion (163) and the first supporting plate (161) form the first limiting slot (160) therebetween; The first protrusion (162) of at least one of the limiting plates (16) is the plug-in part (15), and / or the second protrusion (163) of at least one of the limiting plates (16) is the plug-in part (15).

7. The electricity meter of any of claims 1-6, wherein, The internal element includes a mutual inductor (2) and a zero line connection row (3), and the mutual inductor (2) includes a mutual inductor main body (21) and a mutual inductor connection row (22) provided on the mutual inductor main body (21); The base (1) is provided with a first clamping space (11), a second clamping space (12) and a third clamping space (13). The mutual inductor body (21) is clamped in the first clamping space (11), and the mutual inductor connecting row (22) is clamped in the second clamping space (12); the zero line connecting row (3) is clamped in the third clamping space (13); The fixing piece (4) abuts against the mutual inductor connecting row (22) and the zero line connecting row (3).

8. The electricity meter of claim 7, wherein, The zero line connecting row (3) comprises a connecting row body (31) and a contact structure (32); the connecting row body (31) comprises a first zero line plate (311) and a second zero line plate (312) which are connected by bending, and the first zero line plate (311) is inserted into the third clamping space (13); the contact structure (32) comprises a first contact plate (321) and a second contact plate (322) which are connected by bending, and the first contact plate (321) is attached to and connected with the second zero line plate (312), and the second contact plate (322) extends away from the second zero line plate (312); The first end of the fixing piece (4) abuts against the second zero line plate (312) and is provided with a first clamping groove (4221), the first clamping groove (4221) is clamped with the first contact plate (321), and the second end of the fixing piece (4) is provided with a limiting through hole (414) for penetrating and limiting the second contact plate (322).

9. The electricity meter of claim 7, wherein, One of the zero line connecting row (3) and the base (1) is provided with a limiting protrusion (18), and the other one of the zero line connecting row (3) and the base (1) is provided with a second clamping groove (3121), and the limiting protrusion (18) is clamped with the second clamping groove (3121) correspondingly.

10. The electric meter of claim 7, wherein, The inner wall of the base (1) is provided with two groups of limiting plates (16), each group comprising a plurality of limiting plates (16), and adjacent mutual inductor connecting rows (22) are separated by the limiting plates (16); each limiting plate (16) is provided with the first limiting groove (160); and the first clamping space (11) is formed between the two groups of limiting plates (16); And / or, the bottom wall of the base (1) is provided with a second supporting plate (19), and a plurality of limiting blocks (20) are arranged on the second supporting plate (19) at intervals; the limiting blocks (20) are arranged in pairs, and the second supporting plate (19) and the two limiting blocks (20) in each group form the second clamping space (12) therearound; And / or, the bottom wall of the base (1) is provided with a limiting boss (17), and the third clamping space (13) is formed in the limiting boss (17).

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