Magnetic suction type power meter

Abstract

The application relates to the technical field of electric power meters, in particular to a magnetic-suction-sucker type electric power meter which comprises an electric power meter, a shell, a permanent-magnetic-suction-sucker and a back cover plate, the electric power meter is arranged in the front-end space of the shell, the bottom lower side plate of the electric power meter is detachably connected with the lower side elastic connecting piece at the front end of the shell, the permanent-magnetic-suction-sucker is arranged in the magnetic separation cavity at the rear end of the shell, and the back cover plate is detachably connected with the rear end of the shell through bolts. Compared with colloid bonding, the magnetic-suction-sucker type electric power meter has large suction force and good adsorption effect, compared with bolt connection, the magnetic-suction-sucker type electric power meter does not damage the wall, and other installation tools are not needed, compared with a vacuum suction cup, the magnetic-suction-sucker type electric power meter does not need to consider the flatness of equipment or a wall, the permanent-magnetic-suction-sucker only needs to be rotated to complete permanent-magnetic-suction-sucker magnetization and demagnetization, and then the electric power meter is installed on the equipment or the wall or is taken off from the equipment or the wall; through the use of the elastic connecting piece and the side plate, the anti-vibration performance of the electric power meter during use is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric power meters, and particularly relates to a magnetic-suction chuck type electric power meter. BACKGROUND

[0002] An electric power meter is a power measurement and control device that provides solutions for electric power parameter measurement, electric power quality monitoring and analysis, and electric equipment control.

[0003] During use of the electric power meter, installation and dismounting are always important problems, and relate to the complexity of work of relevant staff. The traditional electric power meter is installed on a wall with an opening by using bolts, such as patent application No. CN202222822471.3, or is adhered to the wall by using a glue body, which can damage the wall and cannot guarantee the firmness of installation. Some electric power meters are fixed on equipment or walls by using a suction cup or a vacuum suction cup, such as patent publication No. CN201910979698.9 and patent publication No. CN221326598U, which disclose similar meter designs. However, the electric power meters still have the following disadvantages in actual use: the suction cup or the vacuum suction cup has a high requirement for the flatness of the surface of an object, and the suction effect is poor for an object with a rough or uneven surface; and the vacuum suction cup needs to consume energy to generate a vacuum, and thus has certain energy consumption during use.

[0004] Therefore, the application provides a magnetic-suction chuck type electric power meter. SUMMARY

[0005] One technical problem to be solved by the application is that the traditional electric power meter is installed on a wall by using bolts or a glue body, which can damage the wall and cannot guarantee the firmness of installation. Some electric power meters are fixed on equipment or walls by using a vacuum suction cup, which has the following disadvantages: the vacuum suction cup has a high requirement for the flatness of the surface of an object, and the suction effect is poor for an object with a rough or uneven surface; and the vacuum suction cup needs to consume energy to generate a vacuum, and thus has certain energy consumption during use.

[0006] To solve the above technical problem, the application provides a magnetic-suction chuck type electric power meter, which comprises an electric power meter, a shell, a permanent-magnetic suction cup and a rear cover plate.

[0007] The electric power meter is arranged in a front-end space of the shell, and a bottom lower side plate of the electric power meter is detachably connected to a lower side elastic connecting piece at the front end of the shell.

[0008] The permanent-magnetic suction cup is arranged in a magnetic isolation cavity at the rear end of the shell.

[0009] The rear cover plate is detachably connected to the rear end of the shell by using bolts.

[0010] In some embodiments, the electric power meter comprises a meter body, a front end panel arranged at the front end of the meter body, a display screen arranged at the middle of the front end panel, a plurality of control buttons arranged at the lower part of the display screen, and the size of the display screen is smaller than the size of the front end panel, and the size of the display screen is determined according to the size of the front end panel.

[0011] The first handle is arranged at the top of the meter body, and the first handle is in the shape of a cylinder, and the size of the first handle is determined according to the meter body.

[0012] In some embodiments, the right side of the meter body is provided with a right side plate, the meter body and the right side plate are connected through a third elastic connecting piece, the left end of the third elastic connecting piece is connected with the right end of the meter body, the right end of the third elastic connecting piece is connected with the right side plate, and the number of the third connecting pieces is three.

[0013] The first positioning hole is arranged on the right side surface of the right side plate, and the number of the first positioning hole is three.

[0014] The left side of the meter body is provided with a left side plate, the left side plate and the meter body are connected through a fourth elastic connecting piece, the left end of the fourth elastic connecting piece is connected with the right end of the left side plate, the right end of the fourth elastic connecting piece is connected with the left end of the meter body, and the number of the fourth elastic connecting pieces is three.

[0015] The second positioning hole is arranged on the left side surface of the left side plate, and the number of the second positioning hole is three.

[0016] The size of the first positioning hole is equal to the size of the second positioning hole, and the first positioning hole and the second positioning hole are symmetrically distributed with respect to the central axis of the meter body along the length direction.

[0017] In some embodiments, the lower side of the meter body is provided with a lower side plate, the lower side plate and the meter body are connected through a first elastic connecting piece, the upper end of the first elastic connecting piece is connected with the lower end of the meter body, the lower end of the first elastic connecting piece is connected with the upper end surface of the lower side plate, and the number of the first elastic connecting pieces is three.

[0018] The lower side surface of the lower side plate is provided with a third positioning hole, and the number of the third positioning hole is three.

[0019] The first positioning hole, the second positioning hole and the third positioning hole are blind holes.

[0020] In some embodiments, the rear side of the meter body is provided with a rear side plate, the rear side plate and the meter body are connected through a second elastic connecting piece, the front end of the second elastic connecting piece is connected with the rear end of the meter body, the rear end of the second elastic connecting piece is connected with the front end of the rear side plate, and the number of the second elastic connecting pieces is four.

[0021] The rear side plate is provided with a plurality of air holes, the air holes are through holes, and the air holes are arranged in a circumferential array.

[0022] The first elastic connecting piece, the second elastic connecting piece, the third elastic connecting piece and the fourth elastic connecting piece are each composed of a connecting rod and a spring.

[0023] In some embodiments, the shell comprises a shell body, the front end of the shell body is composed of left, right and lower side plates, and the space of the front and upper plates is hollowed out;

[0024] The left side wall of the shell body is provided with left side elastic connecting pieces, and the number of the left side elastic connecting pieces is three;

[0025] The right side wall of the shell body is provided with right side elastic connecting pieces, and the number of the right side elastic connecting pieces is three;

[0026] The lower side plate of the shell body is provided with lower side elastic connecting pieces, and the number of the lower side elastic connecting pieces is three;

[0027] The left side elastic connecting piece, the right side elastic connecting piece and the lower side elastic connecting piece are each composed of a connecting rod and a spring;

[0028] The diameter of the connecting rod in the left side elastic connecting piece, the right side elastic connecting piece and the lower side elastic connecting piece is consistent with the hole diameter of the first positioning hole, the second positioning hole and the third positioning hole.

[0029] In some embodiments, the fourth positioning hole is arranged on the inner wall of the front end of the shell body, and a fan is arranged in the fourth positioning hole;

[0030] The position of the fourth positioning hole corresponds to the position of the air hole, the circumferential area of the fourth positioning hole and the air hole is equal, and the fourth positioning hole is a blind hole;

[0031] The rear end of the shell body is a magnetic isolation cavity, the front end surface of the magnetic isolation cavity is provided with a fifth positioning hole, and the fifth positioning hole is a blind hole;

[0032] A plurality of second through holes are arranged on the rear end surface of the shell body, and a first through hole is arranged on the left side wall of the magnetic isolation cavity.

[0033] In some embodiments, the permanent magnetic chuck comprises magnetic poles and an insulation frame, the magnetic poles are linearly arranged, and gaps are left between the magnetic poles;

[0034] The insulation frame is filled in the gaps left between the magnetic poles;

[0035] A second handle is arranged on the right side of the magnetic pole, and the second handle is in the shape of a cylinder;

[0036] A first protrusion is arranged on the rear end of the magnetic pole;

[0037] The second handle can pass through the first through hole, and the diameter of the first protrusion is equal to the diameter of the fifth positioning hole;

[0038] The magnetic isolation cavity can accommodate the permanent magnetic chuck.

[0039] In some embodiments, the back cover plate comprises a cover plate body, and a plurality of third through holes are arranged on the cover plate body.

[0040] In some embodiments, the third through holes correspond to the positions of the second through holes, and the third through holes have the same size as the second through holes, and the diameter of the bolt shank is equal to the size of the third through holes and the second through holes.

[0041] The present application has at least the following advantages:

[0042] 1. Compared with colloid bonding, the magnetic suction disc has large suction force and firm adsorption effect; compared with bolt connection, the wall body is not damaged, and other installation tools are not needed, which is suitable for the case without installation tools.

[0043] 2. Compared with the vacuum suction disc, the magnetic suction disc does not need to consider the flatness of the equipment or wall, and the permanent magnet disc only needs to be magnetized and demagnetized by rotating the second handle, thereby completing the installation of the electric power meter on the equipment or wall, or taking down the electric power meter from the equipment or wall.

[0044] 3. By using the elastic connecting piece and the side plate, the anti-vibration performance of the electric power meter during use is improved, and through the combination of the two groups of elastic connecting pieces and side plates, the vibration from the outside can be offset through the deformation of the spring and connecting rod in the elastic connecting piece, thereby ensuring the safety of the electric power meter during use.

[0045] 4. The disc, shell and electric power meter are detachably connected, which can be directly taken down for maintenance when needed, saving time and effort. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is an overall structure explosion schematic diagram of the present application;

[0047] Figure 2 It is an electric power meter structure schematic diagram of the present application;

[0048] Figure 3 It is a right view of the electric power meter structure of the present application;

[0049] Figure 4 It is a top view of the electric power meter structure of the present application;

[0050] Figure 5 It is a left view of the electric power meter structure of the present application;

[0051] Figure 6 It is a bottom view of the electric power meter structure of the present application;

[0052] Figure 7 It is a rear view of the electric power meter structure of the present application;

[0053] Figure 8 Structure diagram of the shell of the present application;

[0054] Figure 9 Structure diagram of the shell of the present application from another angle;

[0055] Figure 10 Structure diagram of the permanent magnet suction disc of the present application;

[0056] Figure 11 Structure diagram of the permanent magnet suction disc of the present application from another angle;

[0057] Figure 12 Structure diagram of the back cover plate of the present application;

[0058] Figure 13 Structure diagram of the overall structure of the present application;

[0059] Figure 14 Sectional view of the overall structure of the present application;

[0060] Figure 15 Enlarged view of A in the sectional view of the overall structure of the present application.

[0061] In the figure: 1 - electric power meter; 2 - shell; 3 - permanent magnet suction disc; 4 - back cover plate; 5 - bolt; 101 - meter body; 102 - first handle; 103 - display screen; 104 - control button; 105 - front end panel; 106 - right side plate; 107 - back side plate; 108 - left side plate; 109 - first positioning hole; 110 - lower side plate; 111 - first elastic connecting piece; 112 - second elastic connecting piece; 113 - third elastic connecting piece; 114 - fourth elastic connecting piece; 115 - second positioning hole; 116 - third positioning hole; 117 - air hole; 201 - shell body; 202 - left side elastic connecting piece; 203 - right side elastic connecting piece; 204 - lower side elastic connecting piece; 205 - fourth positioning hole; 206 - fan; 207 - inner wall; 208 - magnetic isolation cavity; 209 - first through hole; 210 - second through hole; 211 - fifth positioning hole; 301 - magnetic pole; 302 - insulating frame; 303 - second handle; 304 - first protrusion; 401 - cover plate body; 402 - third through hole. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0063] Embodiment 1: Please refer to Figures 1-15The application provides a technical scheme: a magnetic suction disc type electric power instrument, which comprises an electric power instrument 1, a shell 2, a permanent magnetic suction disc 3 and a back cover plate 4.

[0064] The electric power instrument 1 is arranged in the front end space of the shell 2, and the bottom lower side plate 110 of the electric power instrument 1 is detachably connected with the front end lower side elastic connecting piece 204 of the shell 2.

[0065] The permanent magnetic suction disc 3 is arranged in the rear end magnetic isolation cavity 208 of the shell 2.

[0066] The back cover plate 4 is detachably connected with the rear end of the shell 2 through the bolt 5.

[0067] Further, the electric power instrument 1 comprises an instrument body 101, the front end of the instrument body 101 is provided with a front end panel 105, the middle part of the front end panel 105 is provided with a display screen 103, the lower part of the display screen 103 is provided with a plurality of control buttons 104, the size of the display screen 103 is smaller than the size of the front end panel 105, and the size of the display screen 103 is determined according to the size of the front end panel 105.

[0068] The top of the instrument body 101 is provided with a first handle 102, the first handle 102 is in a cylindrical shape, and the size of the first handle 102 is determined according to the instrument body 101.

[0069] Further, the right side of the instrument body 101 is provided with a right side plate 106, the instrument body 101 is connected with the right side plate 106 through a third elastic connecting piece 113, the left end of the third elastic connecting piece 113 is connected with the right end of the instrument body 101, the right end of the third elastic connecting piece 113 is connected with the right side plate 106, and the number of the third elastic connecting piece 113 is three.

[0070] The right side surface of the right side plate 106 is provided with a first positioning hole 109, and the number of the first positioning hole 109 is three.

[0071] The left side of the instrument body 101 is provided with a left side plate 108, the left side plate 108 is connected with the instrument body 101 through a fourth elastic connecting piece 114, the left end of the fourth elastic connecting piece 114 is connected with the right end of the left side plate 108, the right end of the fourth elastic connecting piece 114 is connected with the left end of the instrument body 101, and the number of the fourth elastic connecting piece 114 is three.

[0072] The left side surface of the left side plate 108 is provided with a second positioning hole 115, and the number of the second positioning hole 115 is three.

[0073] The size of the first positioning hole 109 is equal to the size of the second positioning hole 115, and the first positioning hole 109 and the second positioning hole 115 are symmetrically distributed relative to the central axis of the instrument body 101 along the length direction.

[0074] Furthermore, a lower side plate 110 is provided on the lower side of the instrument body 101. The lower side plate 110 is connected to the instrument body 101 through a first elastic connector 111. The upper end of the first elastic connector 111 is connected to the lower end of the instrument body 101, and the lower end of the first elastic connector 111 is connected to the upper surface of the lower side plate 110. The number of first elastic connectors 111 is three.

[0075] The lower side of the lower side plate 110 is provided with a third positioning hole 116, and the number of the third positioning holes 116 is three;

[0076] The first positioning hole 109, the second positioning hole 115, and the third positioning hole 116 are all blind holes.

[0077] Furthermore, a rear side plate 107 is provided on the rear side of the instrument body 101. The rear side plate 107 is connected to the instrument body 101 through a second elastic connector 112. The front end of the second elastic connector 112 is connected to the rear end of the instrument body 101, and the rear end of the second elastic connector 112 is connected to the front end of the rear side plate 107. The number of second elastic connectors 112 is four.

[0078] The rear panel 107 is provided with a number of ventilation holes 117, which are through holes and are arranged in a circular array.

[0079] The first elastic connector 111, the second elastic connector 112, the third elastic connector 113, and the fourth elastic connector 114 are each composed of a connecting rod and a spring.

[0080] Furthermore, the shell 2 includes a shell body 201, the front end of which is composed of left, right and lower side plates, and the front and upper plates are hollowed out.

[0081] The left side wall of the housing body 201 is provided with a left elastic connector 202, and the number of left elastic connectors 202 is three;

[0082] The right side wall of the housing body 201 is provided with a right elastic connector 203, and the number of right elastic connectors 203 is three.

[0083] The lower side plate of the housing body 201 is provided with three lower elastic connectors 204.

[0084] The left elastic connector 202, the right elastic connector 203, and the lower elastic connector 204 are all composed of a connecting rod and a spring.

[0085] The diameter of the connecting rod in the left elastic connector 202, the right elastic connector 203, and the lower elastic connector 204 is the same as the diameter of the first positioning hole 109, the second positioning hole 115, and the third positioning hole 116.

[0086] Further, the fourth positioning hole 205 is arranged on the inner wall 207 of the front end of the shell body 201, and the fan 206 is arranged in the fourth positioning hole 205;

[0087] The fourth positioning hole 205 is located in correspondence with the position of the air hole 117, the fourth positioning hole 205 and the air hole 117 enclose a circumferential area equal to each other, and the fourth positioning hole 205 is a blind hole;

[0088] The rear end of the shell body 201 is a magnetic isolation cavity 208, and the fifth positioning hole 211 is arranged on the front end surface of the magnetic isolation cavity 208, and the fifth positioning hole 211 is a blind hole;

[0089] A plurality of second through holes 210 are arranged on the rear end surface of the shell body 201, and the first through hole 209 is arranged on the left side wall of the magnetic isolation cavity 208.

[0090] Further, the permanent magnet chuck 3 comprises magnetic poles 301 and an insulating frame 302, the magnetic poles 301 are linearly arranged, and gaps are left between the magnetic poles 301;

[0091] The insulating frame 302 is filled in the gaps left between the magnetic poles 301;

[0092] The second handle 303 is arranged on the right side of the magnetic pole 301, and the second handle 303 is in a cylindrical shape;

[0093] The first protrusion 304 is arranged on the rear end of the magnetic pole 301;

[0094] The second handle 303 can pass through the first through hole 209, and the diameter of the first protrusion 304 is equal to the diameter of the fifth positioning hole 211;

[0095] The magnetic isolation cavity 208 can accommodate the permanent magnet chuck 3.

[0096] Further, the rear cover plate 4 comprises a cover plate body 401, and a plurality of third through holes 402 are arranged on the cover plate body 401.

[0097] Further, the third through hole 402 corresponds in position to the second through hole 210, and the third through hole 402 and the second through hole 210 have equal diameters, and the diameter of the screw rod of the bolt 5 is equal to the diameters of the third through hole 402 and the second through hole 210.

[0098] The following will be described in combination with Figures 1-15 The installation and use process of the equipment will be introduced:

[0099] First, hold the first handle 102 of the instrument body 101 with hand, align the third positioning hole 116 on the lower side plate 110 connected by the first elastic connecting piece 111 with the lower side elastic connecting piece 204 on the shell body 201, complete the connection, at the same time, align the second positioning hole 115 on the left side plate 108 connected by the fourth elastic connecting piece 114 with the left side elastic connecting piece 202 on the shell body 201, complete the connection, align the first positioning hole 109 on the right side plate 106 connected by the third elastic connecting piece 113 with the right side elastic connecting piece 203, complete the connection, thus complete the connection of the electric power instrument 1 and the shell 2.

[0100] Then, position the first protrusion 304 of the permanent magnetic suction disc 3 through the fifth positioning hole 211 in the magnetic isolation cavity 208, complete the installation of the permanent magnetic suction disc 3, then, pass the bolt 5 through the second through hole 210 and the third through hole 402, complete the installation of the back cover plate 4, the permanent magnetic suction disc 3 and the shell 2, wherein the second handle 303 is connected with the permanent magnetic suction disc 3 in butt joint, when the permanent magnetic suction disc 3 is connected with the shell 2, the second handle 303 passes through the first through hole 209. Thus, the whole equipment is completed.

[0101] When in use, only need to rotate the second handle 303 clockwise by 180 degrees to complete the magnetization, at this time, the whole device can be adsorbed on the surface of the equipment target or the surface of the object with iron, through the control button 104, the relevant data can be obtained by watching the display screen 103, in this process, the fan 206 in the fourth positioning hole 205 cools the electronic instrument 1; when the relevant data collection is completed, need to take down the device, only need to rotate the second handle 303 counterclockwise by 180 degrees, thus complete the demagnetization of the permanent magnetic suction disc 3, the device can be taken down, convenient and fast.

[0102] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A magnetic suction cup type power meter comprising a power meter (1), a housing (2), characterized in that: Also include permanent magnet chuck (3), back cover plate (4); The electric power meter (1) is arranged in the front end space of the shell (2), and the bottom lower side plate (110) of the electric power meter (1) is detachably connected with the lower side elastic connecting piece (204) at the front end of the shell (2); The permanent magnet chuck (3) is arranged in the rear end magnetic isolation cavity (208) of the shell (2); The rear cover plate (4) is detachably connected with the rear end of the shell (2) through the bolt (5); The shell (2) comprises a shell body (201), and the front end of the shell body (201) is composed of left, right and lower side plates, and the space of the front and upper plates is hollowed out; The left side wall of the shell body (201) is provided with a left side elastic connecting piece (202); The right side wall of the shell body (201) is provided with a right side elastic connecting piece (203); The lower side plate of the shell body (201) is provided with a lower side elastic connecting piece (204); The electric power meter (1) comprises a meter body (101), the right side of the meter body (101) is provided with a right side plate (106), the meter body (101) and the right side plate (106) are connected through a third elastic connecting piece (113), the left side of the meter body (101) is provided with a left side plate (108), the left side plate (108) and the meter body (101) are connected through a fourth elastic connecting piece (114), the lower side of the meter body (101) is provided with the lower side plate (110), and the lower side plate (110) and the meter body (101) are connected through a first elastic connecting piece (111); The right side surface of the right side plate (106) is provided with a first positioning hole (109), the left side surface of the left side plate (108) is provided with a second positioning hole (115), and the lower side surface of the lower side plate (110) is provided with a third positioning hole (116); The permanent magnet chuck (3) comprises a magnetic pole (301) and an insulating frame (302), the magnetic poles (301) are arranged in a line, and gaps are left between the magnetic poles (301); The insulating frame (302) is filled in the gaps left between the magnetic poles (301); The right side of the magnetic pole (301) is provided with a second handle (303), and the second handle (303) is in the shape of a cylinder; The rear end of the magnetic pole (301) is provided with a first protrusion (304); The second handle (303) can pass through the first through hole (209), the diameter of the first protrusion (304) is equal to the diameter of the fifth positioning hole (211), and the magnetic isolation cavity (208) can accommodate the permanent magnet chuck (3).

2. The magnetic suction disc type power meter according to claim 1, characterized in that: The front end of the meter body (101) is provided with a front end panel (105), the middle part of the front end panel (105) is provided with a display screen (103), the lower part of the display screen (103) is provided with a plurality of control buttons (104), the size of the display screen (103) is smaller than the size of the front end panel (105), and the size of the display screen (103) is determined according to the size of the front end panel (105). The first handle (102) is in the shape of a cylinder, and the size of the first handle (102) is determined according to the instrument body (101).

3. A magnetic suction cup type power meter according to claim 2, characterized in that: The third elastic connecting piece (113) is connected to the right end of the instrument body (101), and the right end of the third elastic connecting piece (113) is connected to the right side plate (106). The number of the first positioning hole (109) is three. The fourth elastic connecting piece (114) is connected to the right end of the left side plate (108), and the right end of the fourth elastic connecting piece (114) is connected to the left end of the instrument body (101). The number of the second positioning hole (115) is three. The size of the first positioning hole (109) is equal to the size of the second positioning hole (115), and the first positioning hole (109) and the second positioning hole (115) are symmetrically distributed relative to the central axis of the instrument body (101) in the length direction.

4. A magnetic suction cup type power meter according to claim 3, characterized in that: The first elastic connecting piece (111) is connected to the lower end of the instrument body (101), and the lower end of the first elastic connecting piece (111) is connected to the upper end surface of the lower side plate (110). The number of the third positioning hole (116) is three. The first positioning hole (109), the second positioning hole (115), and the third positioning hole (116) are all blind holes.

5. A magnetic suction cup type power meter according to claim 4, characterized in that: The rear side of the instrument body (101) is provided with a rear side plate (107), and the rear side plate (107) is connected to the instrument body (101) through a second elastic connecting piece (112). The rear side plate (107) is provided with a plurality of air holes (117), and the air holes (117) are through holes. The first elastic connecting piece (111), the second elastic connecting piece (112), the third elastic connecting piece (113), and the fourth elastic connecting piece (114) are all composed of a connecting rod and a spring.

6. The magnetic suction disc type electric power meter of claim 5, wherein: The number of the left side elastic connecting piece (202) is three. The number of the right side elastic connecting piece (203) is three. The number of the lower side elastic connecting piece (204) is three. The left side elastic connecting piece (202), the right side elastic connecting piece (203), and the lower side elastic connecting piece (204) are all composed of a connecting rod and a spring. The diameter of the connecting rod in the left elastic connecting piece (202), the right elastic connecting piece (203) and the lower elastic connecting piece (204) is consistent with the size of the first positioning hole (109), the second positioning hole (115) and the third positioning hole (116).

7. A magnetic suction cup type power meter according to claim 6, characterized in that: The fourth positioning hole (205) is arranged on the inner wall (207) of the front end of the shell body (201), and the fan (206) is arranged in the fourth positioning hole (205). The position of the fourth positioning hole (205) corresponds to the position of the air hole (117), the circumferential area of the fourth positioning hole (205) and the air hole (117) is equal, and the fourth positioning hole (205) is a blind hole. The rear end of the shell body (201) is a magnetic isolation cavity (208), the front end surface of the magnetic isolation cavity (208) is provided with a fifth positioning hole (211), and the fifth positioning hole (211) is a blind hole. A plurality of second through holes (210) are arranged on the rear end surface of the shell body (201), and a first through hole (209) is arranged on the left side wall of the magnetic isolation cavity (208).

8. A magnetic suction cup type power meter according to claim 7, characterized in that: The rear cover plate (4) comprises a cover plate body (401), and a plurality of third through holes (402) are arranged on the cover plate body (401).

9. A magnetic suction cup type power meter according to claim 8, characterized in that: The third through hole (402) corresponds to the position of the second through hole (210), and the diameter of the third through hole (402) and the second through hole (210) is equal, and the diameter of the screw rod of the bolt (5) is equal to the diameter of the third through hole (402) and the second through hole (210).

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