Replaceable dial plate structure of electric power meter

Abstract

The utility model provides a replaceable dial plate structure of an electric power meter, which relates to the technical field of electric power meters and comprises a front plate and a dial plate, a self-locking component is embedded in the front plate, a mounting groove matched with the dial plate is arranged on the front plate, a plurality of assembly hole positions are arranged in the mounting groove, and a plurality of positioning pins are arranged on one side, close to the front plate, of the dial plate. The self-locking assembly comprises two clamping strips, the upper end and the lower end of each clamping strip are connected with a pressing rod and a reset spring respectively, variable-diameter holes corresponding to the positioning pins in position are formed in the clamping strips, limiting bases are further arranged at the bottoms of the clamping strips, guide columns are arranged at the lower ends of the limiting bases, and the guide columns are sleeved with the reset springs. The beneficial effects of the utility model are that the dial plate can be quickly disassembled and assembled by three steps of pressing, inserting and releasing without tools; due to double locking of transverse friction force and longitudinal clamping, connection is stable and reliable, and vibration and impact can be resisted; the lip-shaped rubber plunger improves the sealing performance and adapts to a complex environment; the limiting and buffering structure protects components, prolongs the service life and reduces the production cost.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of electric power instrument, concretely relates to a replaceable dial structure of electric power instrument. BACKGROUND

[0002] In the power system, the electric power instrument needs to configure the corresponding dial according to the monitoring demand, and the traditional dial is connected with the front plate by screw fastening, buckle locking or glue bonding and other fixing modes. This structure can meet the basic fixing demand in the conventional use scene, but when facing the dial replacement, equipment maintenance and other conditions, the disadvantages gradually highlight, and it is difficult to adapt to the actual demand of efficient operation and maintenance and flexible adjustment.

[0003] The traditional fixed structure has obvious limitations: the replacement of the dial needs to be disassembled with tools or forcibly pry the buckle, which is complicated and time-consuming, and the efficiency is very low when batch maintaining, and repeated disassembly can easily cause the screw hole to slip, the buckle to break, causing component damage, increasing maintenance cost, and the sealing performance decreases after multiple disassembly, dust and moisture easily invade the internal part of the instrument, affecting the service life of electronic components, at the same time, different specifications of the dial need to match the specific front plate structure, which has poor universality, increases the production and inventory cost, and cannot meet the actual demand of standardization and low-cost operation and maintenance. UTILITY MODEL CONTENT

[0004] 1. The technical problem to be solved by the utility model:

[0005] The utility model provides a replaceable dial structure of electric power instrument to solve the technical problems in the above background technology.

[0006] 2. Technical scheme:

[0007] In order to achieve the above purpose, the utility model provides a technical scheme: a replaceable dial structure of electric power instrument, which comprises a front plate and a dial, the front plate is embedded with a self-locking assembly, the front plate is provided with a mounting groove matched with the dial, a plurality of assembly hole positions are formed in the mounting groove, a plurality of positioning pins are arranged on the side of the dial close to the front plate, the self-locking assembly comprises two clamping strips, the upper and lower ends of the clamping strip are connected with a pressing rod and a return spring respectively, a variable diameter hole corresponding to the position of the positioning pin is formed in the clamping strip, a limiting seat is further arranged at the bottom of the clamping strip, a guide column is arranged at the lower end of the limiting seat, and the return spring is sleeved on the guide column.

[0008] Further, the positioning pin comprises a pin column and a plunger, the plunger is a lip-shaped rubber sealing piece, and is arranged corresponding to the assembly hole position.

[0009] Further, the variable diameter hole comprises a large diameter end and a small diameter end, the plunger is matched with the large diameter end, and the pin column is matched with the small diameter end.

[0010] Further, the installation groove is provided with positioning grooves and limiting grooves corresponding to the pressing rod and the limiting seat at the upper and lower ends respectively, and the installation groove is provided with guide strips on the two sides close to the assembly hole.

[0011] Further, the positioning grooves penetrate through the front plate upwards, the limiting grooves are provided with threaded holes at the lower ends extending to the bottom of the front plate, and the limiting seat and the return spring are located in the limiting grooves, and the lower end of the return spring is fixed to the bottom of the limiting groove through a locking screw.

[0012] Further, the installation groove is provided with limiting steps at the lower end, and the limiting steps are spaced apart from the limiting grooves.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the technical scheme has the following beneficial effects:

[0015] The utility model discloses a reasonable design, realizes the dial quick assembly and disassembly, and three steps of pressing, inserting and releasing can be completed without tools, and the double locking of transverse friction force and longitudinal clamping makes the connection stable and reliable, can resist vibration and impact, and the lip rubber plunger improves sealing performance, adapts to complex environment, and the limiting and buffering structure protects components, prolongs service life and reduces production cost.

[0016] It should be noted that the structures not introduced in the utility model are the same as or can be realized by the prior art, and details are not repeated here. DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the whole structure sectional view of the utility model;

[0019] Figure 3 It is the structure A of the utility model; Figure 2 Enlarged schematic view of structure B;

[0020] Figure 4 It is the structure A of the utility model; Figure 2 Enlarged schematic view of structure B;

[0021] Figure 5 It is the self-locking assembly structure schematic view of the utility model;

[0022] Figure 6 It is the front plate structure schematic view of the utility model;

[0023] Figure 7 The utility model discloses a dial structure schematic diagram.

[0024] Reference signs:

[0025] 1, front plate, 101, installation groove, 1011, limit step, 102, assembly hole site, 103, positioning groove, 104, limit groove, 1041, screw hole, 105, guide bar, 2, dial, 201, positioning pin, 2011, pin column, 2012, plunger, 3, self-locking assembly, 301, clamping strip, 3011, variable diameter hole, 3012, limit seat, 3013, guide column, 302, pressure rod, 303, reset spring, 304, locking screw. DETAILED DESCRIPTION

[0026] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings, the drawings show several embodiments of the utility model, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0027] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0029] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix", "have", "have in" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication.For ordinary skilled in the art, the above terms can be understood according to the specific meaning of the utility model.

[0030] Referring to the drawings Figures 1-7 A power meter replaceable dial structure, including front plate 1 and dial 2, front plate 1 is embedded with self-locking assembly 3, front plate 1 is provided with installation groove 101 matched with dial 2, installation groove 101 is provided with a plurality of assembly hole positions 102, dial 2 is provided with a plurality of positioning pins 201 on the side close to front plate 1, self-locking assembly 3 includes two clamping strips 301, the upper and lower ends of clamping strip 301 are connected with pressure rod 302 and reset spring 303 respectively, clamping strip 301 is provided with variable diameter hole 3011 corresponding to the position of positioning pin 201, the bottom of clamping strip 301 is further provided with limiting seat 3012, the lower end of limiting seat 3012 is provided with guide column 3013, reset spring 303 is sleeved on guide column 3013.

[0031] Front plate 1 is provided with installation groove 101 matched with the shape of dial 2, for accommodating dial 2, installation groove 101 is further provided with a plurality of assembly hole positions 102 inside, for cooperating with a plurality of positioning pins 201 of dial 2 to realize positioning and locking, the lower end of installation groove 101 is provided with limiting step 1011, for limiting the vertical movement path when limiting seat 3012 in self-locking assembly 3 resets, installation groove 101 is provided with positioning groove 103 and limiting groove 104 at the upper and lower ends, positioning groove 103 penetrates through front plate 1 upwards, limiting groove 104 is provided with threaded hole 1041 after extending to the bottom of front plate 1 at the lower end.

[0032] Dial 2 is provided with four positioning pins 201 on the side close to front plate 1, each positioning pin 201 is composed of pin 2011 and plunger 2012, wherein plunger 2012 is made of lip rubber sealing element, by the elasticity and sealing property of rubber material, when plunger 2012 is inserted into assembly hole position 102, it can be tightly fitted with the inner wall of assembly hole position 102 through elastic deformation, and then reliable friction force is formed, which provides horizontal locking force for dial 2, preventing dial 2 from displacing in this direction.

[0033] The self-locking assembly 3 comprises two clamping strips 301 which can slide along the guide strips 105 on both sides of the mounting groove 101, the guide strips 105 provide guiding constraints for the movement of the clamping strips 301, ensuring that they do not deviate when sliding up and down, the upper and lower ends of each clamping strip 301 are connected with a pressing rod 302 and a return spring 303 respectively, the pressing rod 302 extends upward and passes through the positioning groove 103 opened at the upper end of the front plate 1, the bottom of the clamping strip 301 is provided with a limiting seat 3012, the lower end of the limiting seat 3012 is connected with a guide column 3013, the return spring 303 is sleeved on the guide column 3013 to provide an upward restoring elastic force for the clamping strip 301, the bottom of the return spring 303 has a connecting pad, which is a consumable material, and can be removed and replaced after long-term use and aging deformation; the lower end of the mounting groove 101 of the front plate 1 is provided with a limiting groove 104, the lower end of the limiting groove 104 extends to the bottom of the front plate 1 and is provided with a threaded hole 1041, after the locking screw 304 is screwed into the threaded hole 1041, the lower end of the return spring 303 is fixed with the bottom of the limiting groove 104, so as to ensure the stable transmission and action of the elastic force of the return spring 303.

[0034] A variable diameter hole 3011 is opened in the clamping strip 301, the variable diameter hole 3011 comprises a large diameter end and a small diameter end, the large diameter end matches the outer diameter of the plunger 2012, and the small diameter end matches the outer diameter of the pin column 2011, which is used to realize the vertical locking of the dial plate 2, wherein the spacing between the limiting step 1011 at the lower end of the mounting groove 101 and the limiting groove 104, the spacing between the lower end of the guide column 3013 and the inner bottom end of the limiting groove 104, and the spacing between the centers of the large diameter end and the small diameter end of the variable diameter hole 3011 are consistent in size, which not only ensures the positional accuracy of each component during assembly, but also limits the up and down sliding path of the self-locking assembly 3, improving the assembly docking accuracy.

[0035] The assembly principle and function realization process are as follows:

[0036] Before assembly, the operator presses the pressing rod 302 downward, the pressing rod 302 drives the clamping strip 301 to slide downward along the guide strip 105, at the same time, the limiting seat 3012 and the guide column 3013 slide downward, the return spring 303 is compressed, the clamping strip 301 continuously moves downward until the guide column 3013 descends to the limit position in the limiting groove 104, so that the large diameter end of the variable diameter hole 3011 accurately corresponds to the plunger 2012 on the dial plate 2;

[0037] Subsequently, the four positioning pins 201 on the dial plate 2 are inserted into the large diameter end of the variable diameter hole 3011, and the dial plate 2 is further pushed, so that the plunger 2012 is inserted into the assembly hole 102, since the plunger 2012 is a lip-shaped rubber sealing element, it will elastically deform after being inserted, tightly contact with the inner wall of the assembly hole 102 to generate friction force, thereby realizing the locking of the dial plate 2 in the transverse direction, preventing it from moving in the direction parallel to the front plate 1;

[0038] Finally, the release pressure rod 302, the compressed reset spring 303 generates upward elastic force, pushes the card strip 301 upwards along the guide strip 105 to reset, in the process, the limiting seat 3012 at the bottom of the card strip 301 moves upwards, and the limiting step 1011 at the lower end of the mounting groove 101 blocks the limiting seat 3012 from moving upwards excessively, limiting the vertical reset stroke of the card strip 301 within a reasonable range, which not only ensures that the small-diameter end of the variable-diameter hole 3011 can be accurately clamped into the pin column 2011 of the positioning pin 201 to realize the vertical locking of the dial plate 2 and prevent the dial plate 2 from being pulled out of the mounting groove 101, but also avoids the interference between the card strip 301 and the front plate 1 structure due to excessive reset, ensuring the accuracy and stability of the reset action of the self-locking assembly 3, and further improving the vertical locking reliability of the dial plate 2 after assembly.

[0039] In summary, the structure realizes the dual effects of horizontal friction locking and vertical clamping locking, which not only ensures the structural stability of the dial plate 2 after assembly, but also facilitates subsequent replacement and convenient operation.

[0040] The above-described embodiments only express certain embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of the present application; it should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An electric power meter replaceable dial structure comprising a front plate (1) and a dial (2), characterized in that: The front plate (1) is embedded with a self-locking assembly (3), the front plate (1) is provided with a mounting groove (101) matched with the dial plate (2), a plurality of assembly hole positions (102) are formed in the mounting groove (101), the dial plate (2) is provided with a plurality of positioning pins (201) on the side close to the front plate (1), the self-locking assembly (3) comprises two clamping strips (301), the upper and lower ends of the clamping strip (301) are connected with a pressing rod (302) and a reset spring (303), a variable diameter hole (3011) corresponding to the position of the positioning pin (201) is formed in the clamping strip (301), and a limiting seat (3012) is further arranged at the bottom of the clamping strip (301).

2. The electric power meter replaceable watch face structure according to claim 1, characterized in that: The positioning pin (201) comprises a pin column (2011) and a plunger (2012), the plunger (2012) is a lip-shaped rubber sealing element, and is arranged corresponding to the assembly hole position (102).

3. The electric power meter replaceable watch face structure according to claim 2, characterized in that: The variable diameter hole (3011) comprises a large diameter end and a small diameter end, the plunger (2012) is matched with the large diameter end, and the pin column (2011) is matched with the small diameter end.

4. The electric power meter replaceable watch face structure according to claim 1, characterized in that: The upper and lower ends of the mounting groove (101) are provided with a positioning groove (103) and a limiting groove (104) corresponding to the pressing rod (302) and the limiting seat (3012) respectively, and the two sides of the mounting groove (101) close to the assembly hole position (102) are further provided with a guide strip (105), and the clamping strip (301) is embedded in the mounting groove (101) along the guide strip (105).

5. The electric power meter replaceable watch face structure according to claim 4, characterized in that: The positioning groove (103) penetrates the front plate (1) upward, the limiting groove (104) is provided with a threaded hole (1041) at the lower end extending to the bottom of the front plate (1), the limiting seat (3012) and the reset spring (303) are located in the limiting groove (104), and the lower end of the reset spring (303) is fixed to the bottom of the limiting groove (104) through a locking screw (304).

6. The electric power meter replaceable watch face structure according to claim 5, characterized in that: The lower end of the mounting groove (101) has a limiting step (1011), and a certain spacing is formed between the limiting step (1011) and the limiting groove (104).

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