Electric meter shell

Abstract

The utility model relates to an electric meter shell, and belongs to the field of electric meters, the electric meter shell comprises a main shell, the main shell is provided with a display opening, and the main shell is rotatably provided with a mounting cover plate used for covering the display opening; a first convex part and a second convex part are arranged at two ends of one side of the mounting cover plate; the main shell is provided with a first rotating seat and a second rotating seat; the first convex part is provided with a limiting assembly, the limiting assembly comprises a sliding rod in sliding fit with the first convex part, a limiting disc connected to the sliding rod and a limiting spring arranged on the sliding rod in a sleeving mode, and the end face of the limiting disc is provided with a first annular tooth face; the first rotating seat is provided with a limiting convex ring, and the limiting convex ring is provided with a second annular tooth surface meshed with the first annular tooth surface; and after the first annular tooth surface and the second annular tooth surface are meshed, the mounting cover plate is limited to overturn towards the direction far away from the display opening. The electric meter has the advantages that the problem that reading is affected by dust, greasy dirt and the like covering the counter of the electric meter body is solved, and the electric meter has certain anti-creeping capability.

Description

Technical Field

[0001] The present application relates to the field of electric meters, and in particular to an electric meter housing. Background Art

[0002] The electric meter, also known as the watt-hour meter, fire meter, and kilowatt-hour meter, refers to an instrument for measuring various electrical quantities. It is also the most common electrical accessory in life and is used to measure the electricity consumption of each household. The electric meter includes an electric meter body and a meter housing for placing the electric meter body. In order to facilitate the reading of the electric meter, many electric meter housings are provided with display windows corresponding to the counter in the electric meter body. However, during long-term use, the window opening of the electric meter housing is easily covered with oil, dust, etc., which affect the reading. At present, some electric meters solve the above problems by adopting an electric meter housing with a sliding cover structure. When it is necessary to read the counter of the electric meter body, the sliding cover is pushed to expose the counter of the electric meter body so as to read the counter. However, after long-term use, the above-mentioned electric meter housing is prone to the problem of unsmooth sliding, which affects the use. In view of the related technologies mentioned above, the inventor provides a new electric meter housing. Utility Model Content

[0003] In order to improve the problem that dust, oil, etc. covering the counter of the electric meter body affects the reading, the present application provides an electric meter housing.

[0004] The electric meter housing provided in this application adopts the following technical solution:

[0005] A meter housing, comprising a main housing, the main housing having a display opening, and a mounting cover plate for covering the display opening being rotatably mounted on the main housing; a first protrusion and a second protrusion are provided at both ends of one side of the mounting cover plate; the main housing is provided with a first rotating seat for rotatably mounting the first protrusion and a second rotating seat for rotatably mounting the second protrusion; a limiting assembly is installed on the first protrusion, the limiting assembly comprises a sliding rod that cooperates with the first protrusion for axial sliding, a limiting plate connected to the sliding rod and arranged in the first rotating seat, and a limiting spring that is sleeved on the sliding rod and drives the limiting plate to always have a tendency to move away from the first protrusion, the limiting plate having a first annular tooth surface on the end face facing away from the sliding rod; the first rotating seat is provided with a limiting convex ring, the limiting convex ring having a second annular tooth surface for meshing with the first annular tooth surface; after the first annular tooth surface and the second annular tooth surface are meshed, the mounting cover plate is limited to flip in a direction away from the display opening.

[0006] By adopting the above technical solution, a mounting cover plate for covering the display opening is provided at the display opening of the main housing, and the mounting cover plate is fixed to the main housing through the cooperation between the first protrusion and the first rotating seat and the second protrusion and the second rotating seat, wherein the first protrusion is installed with a limit assembly, and by pushing the limit plate to move in the direction away from the first rotating seat, the first annular tooth surface is separated from the second annular tooth surface, thereby realizing the flipping of the mounting cover plate in the direction away from the display opening, and when the first annular tooth surface is meshed with the second annular tooth surface, the mounting cover plate is attached to the end face of the main housing. The setting of the mounting cover plate effectively reduces the probability of dust, oil, etc. entering the counter covering the meter body from the display opening and affecting the user's reading.

[0007] Optionally, one end of the limiting plate away from the first protrusion is connected to a control button for pushing the limiting plate, and one end of the control button away from the limiting plate extends outside the first rotating seat.

[0008] By adopting the above technical solution, the setting of the control button and the extension of the control button outside the first rotating seat help the user to push the limit plate, thereby realizing the flipping of the installation cover away from the display opening, making it easier for the user to read the counter of the meter body.

[0009] Optionally, the second rotating seat has a mounting boss protruding toward the second protrusion, and the mounting boss is outer-circuited with a door-opening torsion spring, one end of the door-opening torsion spring is connected to the second protrusion and the other end is connected to the second rotating seat, so that the door-opening torsion spring drives the mounting cover to always have a tendency to flip in the direction away from the display opening.

[0010] By adopting the above technical solution, the door opening torsion spring is arranged so that the installation cover always has a tendency to flip away from the display opening, which helps the user to read the counter of the meter body. The installation boss is arranged to reduce the probability of the door opening torsion spring moving and affecting the flipping of the installation cover.

[0011] Optionally, a limiting structure for limiting the flipping angle of the mounting cover is provided between the second rotating seat and the second protrusion, and the limiting structure includes a limiting protrusion provided on the inner wall of the second rotating seat and a limiting groove provided on the outer wall of the second protrusion and for inserting the limiting protrusion.

[0012] By adopting the above technical solution, the flipping angle of the installation cover is limited by the cooperation between the limiting protrusion on the inner wall of the second rotating seat and the limiting groove in the second convex part. When the limiting protrusion abuts against the end face of the limiting groove, the installation cover stops flipping, thereby reducing the probability of the installation cover hitting the main shell during the flipping process.

[0013] Optionally, the end surface of the first protrusion has a sliding hole for the sliding rod to be slidably arranged and the cross-section of which matches the cross-section of the sliding rod; the cross-section of the sliding rod is square.

[0014] By adopting the above technical solution, the cross-section of the sliding rod and the sliding hole is set to a square, so that the installation cover can drive the sliding rod and the limit plate connected to one end of the sliding rod to rotate during the flipping process, thereby reducing the probability of failure of the limit assembly function.

[0015] Optionally, the first annular tooth surface includes a circle of radially arranged first spur teeth, the first spur teeth having a first cut-off surface perpendicular to the end face of the limiting disk and a first guide surface arranged at an angle; the second annular tooth surface includes a circle of radially arranged second spur teeth, the second spur teeth having a second cut-off surface perpendicular to the end face of the limiting cam ring and a second guide surface arranged at an angle.

[0016] By adopting the above technical solution, by setting the first cut-off surface on the first straight tooth and the second cut-off surface on the second straight tooth, when the first annular tooth surface is meshed with the second annular tooth surface, the installation cover plate can only rotate in one direction, and the installation cover plate is restricted from flipping in the direction away from the display opening. By setting the first guide surface on the first straight tooth and the second guide surface on the second straight tooth, the installation cover plate is facilitated to flip in the direction of the display opening.

[0017] Optionally, the angle between the first guide surface and the end surface of the limiting disk is 30°, and the angle between the second guide surface and the end surface of the limiting convex ring is 30°.

[0018] By adopting the above technical solution, the angle between the first guide surface and the end surface of the limiting disk and the angle between the second guide surface and the end surface of the limiting convex ring are set to 30°, which helps to flip the installation cover toward the display opening, thereby covering the display opening.

[0019] Optionally, the end surface of the mounting cover plate facing the main shell body is a covering end surface, and the mounting cover plate is provided with a dustproof structure at the covering end surface, the dustproof structure comprising a first dustproof strip arranged at the upper edge of the covering end surface, a second dustproof strip arranged at the lower edge of the covering end surface, and a third dustproof strip connected to the first dustproof strip and the second dustproof strip and located on the side of the covering end surface away from the first rotating seat.

[0020] By adopting the above technical solution, a dustproof structure is provided at the covering end surface of the mounting cover, which helps to reduce the dust from entering the display opening through the gap between the mounting cover and the main shell, affecting the user's reading of the meter body counter.

[0021] Optionally, a wire through hole for passing the power line is opened at the bottom of the main shell, and the main shell is provided with an I-shaped wiring rubber sleeve in the wire through hole.

[0022] By adopting the above technical solution, the provision of the wire threading through hole is helpful for the passage of the wire, and the provision of the I-type wiring rubber sleeve is helpful for improving the insulation of the meter housing and reducing the probability of safety hazards caused by wire leakage to users.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] An electric meter housing, wherein a mounting cover is arranged at a display opening of a main housing, and a first annular tooth surface is separated from a second annular tooth surface by pushing a limit plate, thereby facilitating the mounting cover to flip in a direction away from the display opening, so that a user can read the counter of the electric meter body, and effectively reducing the probability that the display opening is covered by oil, dust, etc., affecting the reading of the counter of the electric meter body;

[0025] By arranging a door opening torsion spring between the second protrusion and the second rotating seat, the installation cover plate always has a tendency to flip in a direction away from the display opening;

[0026] By setting a first cut-off surface and a first guide surface on the first straight tooth, and setting a second cut-off surface and a second guide surface on the second straight tooth, when the first annular tooth surface is meshed with the second annular tooth surface, the mounting cover plate can only be flipped in one direction, which helps to limit the flipping of the mounting cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the electric meter housing in this embodiment.

[0028] Figure 2 2 is a schematic cross-sectional view of the housing of the electric meter in this embodiment.

[0029] Figure 3 It is a cross-sectional schematic diagram of the cooperation between the mounting cover plate and the upper shell in this embodiment.

[0030] Figure 4 It is a cross-sectional schematic diagram of the cooperation between the sliding rod and the sliding hole in this embodiment.

[0031] Figure 5 It is a cross-sectional schematic diagram of the cooperation between the limiting assembly and the first rotating seat in this embodiment.

[0032] Figure 6 yes Figure 5 A local enlarged schematic diagram of point A in the middle.

[0033] Figure 7 It is a cross-sectional schematic diagram of the cooperation between the second protrusion and the second rotating seat in this embodiment.

[0034] Figure 8 It is a cross-sectional schematic diagram of the cooperation between the I-type wiring rubber sleeve and the lower shell in this embodiment.

[0035] Description of reference numerals: 1, upper shell; 11, display opening; 12, mounting cover; 121, first convex portion; 1211, sliding hole; 122, second convex portion; 1221, limiting groove; 123, covering end surface; 124, first dustproof strip; 125, second dustproof strip; 126, third dustproof strip; 13, first rotating seat; 131, limiting convex ring; 132, second annular tooth surface; 1321, second straight tooth; 13211, second cut-off surface; 1 3212, second guide surface; 14, second rotating seat; 141, mounting boss; 142, door opening torsion spring; 143, limiting boss; 151, sliding rod; 152, limiting disk; 153, limiting spring; 154, first annular tooth surface; 1541, first straight tooth; 15411, first cut-off surface; 15412, first guide surface; 16, control button; 2, lower shell; 21, threading hole; 22, I-type wiring rubber sleeve; 3, cavity arrangement. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-8 The present application is further described in detail. The present application embodiment discloses an electric meter housing. Figure 1 and Figure 2 An electric meter housing includes an upper housing 1 and a lower housing 2 matched with the upper housing 1. The upper housing 1 and the lower housing 2 are both rectangular parallelepiped structures with one end open, and a cavity 3 for arranging the electric meter body is formed between the upper housing 1 and the lower housing 2. The lower housing 2 has a mounting groove for arranging the upper housing 1, and the upper housing 1 is fixed to the lower housing 2 by screws.

[0037] Reference Figure 1 and Figure 3 The upper housing 1 has a display opening 11 for a user to read the counter of the meter body, and a mounting cover 12 is rotatably mounted at the display opening 11 for covering the display opening 11. The mounting cover 12 has a first convex portion 121 and a second convex portion 122 at both ends of one side, and the upper housing 1 is provided with a first rotating seat 13 for rotatably mounting the first convex portion 121 and a second rotating seat 14 for rotatably mounting the second convex portion 122. The first rotating seat 13 and the second rotating seat 14 are fixed to the upper housing 1 by screws.

[0038] Reference Figure 3 and Figure 4, the first protrusion 121 is installed with a limit assembly. The limit assembly includes a sliding rod 151 that is axially slidably matched with the first protrusion 121, a limit plate 152 connected to one end of the sliding rod 151 away from the first protrusion 121 and arranged in the first rotating seat 13, and a limit spring 153 that is sleeved on the sliding rod 151 and drives the limit plate 152 to always have a tendency to move away from the first protrusion 121. Among them, the cross section of the sliding rod 151 is square, and the end surface of the first protrusion 121 away from the installation cover plate 12 has a sliding hole 1211 for sliding arrangement of the sliding rod 151 and the cross section of which matches the cross section of the sliding rod 151.

[0039] Reference Figure 5 and Figure 6 The limiting plate 152 is provided with a first annular tooth surface 154 on the end surface facing away from the sliding rod 151, and the first rotating seat 13 is provided with a limiting protruding ring 131 arranged opposite to the limiting plate 152, and the limiting protruding ring 131 has a second annular tooth surface 132 for meshing with the first annular tooth surface 154. The first annular tooth surface 154 includes a circle of radially arranged first spur teeth 1541, and the first spur teeth 1541 have a first cut-off surface 15411 perpendicular to the end surface of the limiting plate 152 and a first guide surface 15412 obliquely arranged on the end surface of the limiting plate 152. The second annular tooth surface 132 includes a circle of radially arranged second spur teeth 1321, and the second spur teeth 1321 have a second cut-off surface 13211 perpendicular to the end surface of the limiting protruding ring 131 and a second guide surface 13212 obliquely arranged on the end surface of the limiting protruding ring 131. The angle between the first guide surface 15412 and the end surface of the limiting plate 152 is 30°, and the angle between the second guide surface 13212 and the end surface of the limiting convex ring 131 is 30°. The limiting plate 152 is connected to a control button 16 for pushing the limiting plate 152 at one end away from the first convex portion 121, and the end of the control button 16 away from the limiting plate 152 extends to the outside of the first rotating seat 13. After being pushed by the control button 16, the limiting plate 152 has a first position and a second position. When the limiting plate 152 is in the first position, the first annular tooth surface 154 meshes with the second annular tooth surface 132 to limit the installation cover plate 12 from turning in the direction away from the display opening 11; when the limiting plate 152 is in the second position, the first annular tooth surface 154 separates from the second annular tooth surface 132, and the end of the sliding rod 151 away from the limiting plate 152 abuts against the end surface of the sliding hole 1211, and the installation cover plate 12 can be turned.

[0040] Reference Figure 3 The second rotating seat 14 has a mounting boss 141 protruding toward the second convex portion 122, and a door-opening torsion spring 142 is disposed on the mounting boss 141. One end of the door-opening torsion spring 142 is connected to the second convex portion 122 and the other end is connected to the second rotating seat 14, so that the door-opening torsion spring 142 can drive the mounting cover 12 to always have a tendency to flip in a direction away from the display opening 11.

[0041] Reference Figure 7 In order to limit the flipping angle of the installation cover plate 12, a limiting structure is provided between the second rotating seat 14 and the second protrusion 122, and the limiting structure includes a limiting protrusion 143 provided on the inner wall of the second rotating seat 14 and a limiting groove 1221 provided on the outer wall of the second protrusion 122 and used for inserting the limiting protrusion 143. In this embodiment, the flipping angle of the installation cover plate 12 is limited to 120°.

[0042] refer to Figure 1 The end surface of the mounting cover plate 12 facing the upper housing 1 is the covering end surface 123, and the mounting cover plate 12 is provided with a dustproof structure for limiting dust from entering the display opening 11 at the covering end surface 123. The dustproof structure includes a first dustproof strip 124 arranged at the upper edge of the covering end surface 123, a second dustproof strip 125 arranged at the lower edge of the covering end surface 123, and a third dustproof strip 126 connecting the first dustproof strip 124 and the second dustproof strip 125 and located on the side of the covering end surface 123 away from the first rotating seat 13.

[0043] Reference Figure 8 The bottom of the lower housing 2 is also provided with a plurality of threading holes 21 for passing the power lines, and the lower housing 2 is also provided with I-type wiring rubber sleeves 22 at the threading holes 21. In this embodiment, the number of the I-type wiring rubber sleeves is 3.

[0044] The implementation principle of an electric meter housing of the embodiment of the present application is as follows: a mounting cover plate 12 for covering the display opening 11 is provided at the display opening 11 of the upper cover plate, and the mounting cover plate 12 is fixed to the upper cover plate by the cooperation between the first protrusion 121 and the first rotating seat 13 and the second protrusion 122 and the second rotating seat 14. The door opening torsion spring 142 is arranged between the second protrusion 122 and the second rotating seat 14, so that the mounting cover plate 12 is always driven to flip in the direction away from the display opening 11, and then the first protrusion 121 and the first rotating seat 13 are used to rotate the mounting cover plate 12. The setting of the limit assembly enables the installation cover 12 to be restricted from flipping in a direction away from the display opening 11 when the first annular tooth surface 154 is meshed with the second annular tooth surface 132; when the limit plate 152 is pushed to slide in the direction of the first protrusion 121 by the control button 16, the first annular tooth surface 154 separates from the second annular tooth surface 132, so that the installation cover 12 can be flipped in a direction away from the display opening 11, thereby effectively reducing the probability of dust, oil, etc. entering the counter covering the meter body through the display opening 11 and affecting the user's reading.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application. One-way flipping helps to limit the flipping of the installation cover.

Claims

1. An electric meter housing, comprising a main housing, the main housing having a display opening (11), characterized in that: The main shell is rotatably mounted with a mounting cover plate (12) for covering the display opening (11); a first convex portion (121) and a second convex portion (122) are provided at two ends of one side of the mounting cover plate (12); the main shell is provided with a first rotating seat (13) for rotatably mounting the first convex portion (121) and a second rotating seat (14) for rotatably mounting the second convex portion (122); the first convex portion (121) is mounted with a limiting assembly, the limiting assembly comprising a sliding rod (151) axially slidingly matched with the first convex portion (121), a limiting plate (152) connected to the sliding rod (151) and arranged in the first rotating seat (13); ) and a limit spring (153) which is sleeved on the sliding rod (151) and drives the limit plate (152) to always have a tendency to move away from the first protrusion (121); the limit plate (152) is provided with a first annular tooth surface (154) on the end surface facing away from the sliding rod (151); the first rotating seat (13) is provided with a limit convex ring (131), and the limit convex ring (131) has a second annular tooth surface (132) for meshing with the first annular tooth surface (154); after the first annular tooth surface (154) and the second annular tooth surface (132) are meshed, the mounting cover plate (12) is limited from flipping in a direction away from the display opening (11).

2. An electric meter housing according to claim 1, characterized in that: One end of the limiting plate (152) away from the first protrusion (121) is connected to a control button (16) for pushing the limiting plate (152), and one end of the control button (16) away from the limiting plate (152) extends outside the first rotating seat (13).

3. An electric meter housing according to claim 1, characterized in that: The second rotating seat (14) has a mounting boss (141) protruding toward the second protrusion (122), and the mounting boss (141) is provided with a door-opening torsion spring (142) on its outer sleeve, one end of the door-opening torsion spring (142) is connected to the second protrusion (122) and the other end is connected to the second rotating seat (14), so that the door-opening torsion spring (142) drives the mounting cover (12) to always have a tendency to flip in a direction away from the display opening (11).

4. The electric meter housing according to claim 1, characterized in that: A limiting structure for limiting the flipping angle of the mounting cover plate (12) is provided between the second rotating seat (14) and the second protrusion (122), the limiting structure comprising a limiting protrusion (143) provided on the inner wall of the second rotating seat (14) and a limiting groove (1221) provided on the outer wall of the second protrusion (122) and used for inserting the limiting protrusion (143).

5. The electric meter housing according to claim 1, characterized in that: The end surface of the first protrusion (121) has a sliding hole (1211) for the sliding rod (151) to be arranged for sliding movement and the cross section of which matches the cross section of the sliding rod (151); the cross section of the sliding rod (151) is square.

6. The electric meter housing according to claim 1, characterized in that: The first annular tooth surface (154) includes a circle of radially arranged first spur teeth (1541), the first spur teeth (1541) having a first cut-off surface (15411) perpendicular to the end surface of the limiting disk (152) and a first guide surface (15412) arranged obliquely; the second annular tooth surface (132) includes a circle of radially arranged second spur teeth (1321), the second spur teeth (1321) having a second cut-off surface (13211) perpendicular to the end surface of the limiting convex ring (131) and a second guide surface (13212) arranged obliquely.

7. An electric meter housing according to claim 6, characterized in that: The angle between the first guide surface (15412) and the end surface of the limiting plate (152) is 30°, and the angle between the second guide surface (13212) and the end surface of the limiting convex ring (131) is 30°.

8. The electric meter housing according to claim 1, characterized in that: The end surface of the installation cover plate (12) facing the main shell is a covering end surface (123), and the installation cover plate (12) is provided with a dustproof structure at the covering end surface (123), and the dustproof structure includes a first dustproof strip (124) arranged at the upper edge of the covering end surface (123), a second dustproof strip (125) arranged at the lower edge of the covering end surface (123), and a third dustproof strip (126) connected to the first dustproof strip (124) and the second dustproof strip (125) and located on a side of the covering end surface (123) away from the first rotating seat (13).

9. The electric meter housing according to claim 1, characterized in that: A wire through hole (21) for passing a power line is provided at the bottom of the main housing, and an I-shaped wiring rubber sleeve (22) is provided on the wire through hole (21).

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