A key assembly and electric energy meter

Abstract

The utility model belongs to the technical field of instruments, and particularly relates to a button assembly and an electric energy meter, including a push rod and a rubber sleeve, wherein the push rod includes a connected push portion and a main body, wherein a limit surface is provided between the push portion and the main body, wherein the limit surface faces the side where the main body is located, wherein a plug hole is provided on the rubber sleeve, wherein the main body is plugged into the plug hole, wherein one end of the rubber sleeve close to the push portion abuts against the limit surface, and one end of the rubber sleeve away from the push portion is a connecting end, wherein the side of the connecting end facing away from the push portion is used for electrical connection with a circuit board of the electric energy meter. The rubber sleeve can be compressed when the push rod is pressed to produce elastic deformation, and can drive the push rod to move in the process of autonomously restoring the deformation when the push rod is released. In addition, the rubber sleeve can also play a sealing role when installed on the housing of the electric energy meter, thereby simplifying the structure and the steps.

Description

Technical Field

[0001] The utility model belongs to the technical field of instruments, and in particular relates to a button assembly and an electric energy meter. Background Art

[0002] An electric energy meter is an instrument used to measure electrical energy.

[0003] An existing electric energy meter includes a shell, a circuit board, an electrical component and a button. The shell is provided with a mounting cavity, the circuit board and the electrical component are installed in the mounting cavity, the circuit board is electrically connected to the electrical component, the shell is provided with a through hole, the button includes a push rod and a spring, the push rod is assembled in the through hole, the inner end of the button extends into the mounting cavity, the spring is sleeved on the inner end of the push rod, and the outer end of the button is exposed from the shell. When the push rod is pressed, the inner end of the button contacts the circuit board to connect the circuit on the circuit board.

[0004] In order to make the push rod return to its initial position after being pressed, the existing electric energy meter has a spring on the part of the push rod located in the installation cavity, and a sealing ring is installed between the push rod and the housing, and the push rod is driven back to its initial position by the elastic force of the spring. However, the elastic force of the spring will hinder the installation of the push rod and the sealing ring, making the overall installation of the button more complicated and time-consuming. Summary of the invention

[0005] The technical problem to be solved by the utility model is: to provide a button and an electric energy meter in view of the problem that the overall installation of the buttons of the existing electric energy meter is relatively complicated.

[0006] To solve the above technical problems, on the one hand, an embodiment of the utility model provides a button assembly, including a push rod and a rubber sleeve, the push rod including a push part and a main body connected to each other, a limiting surface between the push part and the main body, the limiting surface facing the side where the main body is located, a socket is provided on the rubber sleeve, the main body is inserted into the socket, one end of the rubber sleeve close to the push part is against the limiting surface, and the end of the rubber sleeve away from the push part is a connecting end, and the side of the connecting end facing away from the push part is used for electrical connection with the circuit board of the electric energy meter.

[0007] Optionally, the push portion and the main body are both cylindrical, the diameter of the push portion is larger than the diameter of the main body, and a surface of the push portion on one side facing the main body forms the limiting surface;

[0008] The rubber sleeve includes a connected large diameter section and a small diameter section, the outer diameter of the large diameter section is larger than the outer diameter of the small diameter section, one end of the large diameter section away from the small diameter section abuts against the limit surface, the outer periphery of the large diameter section is used for sealing and assembling with the shell of the electric energy meter, and one end of the small diameter section away from the pressing part forms the connecting end.

[0009] Optionally, the end of the large diameter section away from the pressing part has a connecting plate, the connecting plate is connected to the hole wall of the jack, the end of the small diameter section close to the pressing part is connected to a side of the connecting plate facing away from the pressing part, and the connecting plate is provided with a through hole;

[0010] The rubber sleeve also includes a plug-in section, which is connected to an end of the large-diameter section away from the pressing portion, and the plug-in section is used for plugging with a housing of the electric energy meter.

[0011] Optionally, a guide groove is provided on the hole wall of the perforation on the connecting plate, a guide hole is provided on the small diameter section, the guide hole is connected to the guide groove, the guide hole and the guide groove extend along the axial direction of the push rod, a long plate is provided on the circumference of the main body, the long plate extends along the axial direction of the push rod, a portion of the long plate close to the push portion is clamped with the guide groove, and a portion of the long plate away from the push portion is plugged into the guide hole.

[0012] Optionally, one end of the long plate away from the pressing portion has a stopping step, and the stopping step is facing the side of the pressing portion for stopping cooperation with a shell of the electric energy meter.

[0013] Optionally, a slope is provided on a side of the stopping step facing away from the pressing portion, and the slope is inclined from a side away from the main body portion to a side close to the main body portion.

[0014] Optionally, one end of the main body away from the pressing portion is connected to the small-diameter section.

[0015] Optionally, a connecting hole is provided on a side of the connecting end facing the pressing portion, and an inserting column is provided on an end of the main body away from the pressing portion, and the inserting column is plugged into the connecting hole.

[0016] Compared with the prior art, the button assembly according to the embodiment of the utility model eliminates the need for a spring and a sealing ring. When the button assembly is installed on the housing of the electric energy meter, it is only necessary to assemble the button rod and the rubber sleeve on the housing. The rubber sleeve itself is elastic. When the button rod is pressed, the rubber sleeve can be compressed to produce elastic deformation, and can drive the button rod to move in the process of autonomously restoring the deformation when the button rod is released. In addition, the rubber sleeve can also play a sealing role when installed on the housing of the electric energy meter, thereby simplifying the structure and simplifying the steps.

[0017] On the other hand, an embodiment of the utility model provides an electric energy meter, including a housing and the above-mentioned button assembly.

[0018] On the other hand, an embodiment of the utility model provides an electric energy meter, including a shell and the above-mentioned button assembly, wherein the shell is provided with a mounting hole, and the button assembly extends into the shell through the mounting hole, and a slot is provided on the hole wall of the mounting hole close to the outer hole opening, and the plug-in section is plugged into the slot, and a guide slope is provided on the hole wall of the mounting hole close to the inner hole opening, and the guide slope is inclined from a side away from the main body to a side close to the main body, and the guide slope is used to cooperate with the slope to guide the stop step to enter the shell, and the stop step is stopped and cooperated with the inner wall of the shell on the side facing the push part, and the hole wall of the mounting hole is sealed and assembled with the outer peripheral surface of the large diameter section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a key assembly provided in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 The structural diagram of the middle push rod;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the middle rubber sleeve;

[0022] Figure 4 for Figure 3 Another perspective of

[0023] Figure 5 A schematic diagram of the assembly of a housing and a button assembly of an electric energy meter provided in one embodiment of the utility model;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure of the middle shell;

[0025] Figure 7 for Figure 6 Another perspective of .

[0026] The figure numbers in the specification are as follows: 1. rubber sleeve; 2. push rod; 3. push part; 4. limit surface; 5. main body; 6. long plate; 7. groove; 8. stop step; 9. slope; 10. plug column; 11. large diameter section; 12. small diameter section; 13. guide hole; 14. connecting end; 15. connecting hole; 16. plug hole; 17. connecting plate; 18. through hole; 19. guide groove; 20. guide slope; 21. mounting hole; 22. slot; 23. plug-in section; 24. shell. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] like Figures 1 to 4 As shown, an embodiment of the utility model provides a button assembly, including a push rod 2 and a rubber sleeve 1, the push rod 2 includes a push portion 3 and a main body 5 connected to each other, a limiting surface 4 is provided between the push portion 3 and the main body 5, the limiting surface 4 faces the side where the main body 5 is located, the rubber sleeve 1 is provided with a socket 16, the main body 5 is inserted into the socket 16, one end of the rubber sleeve 1 close to the push portion 3 is against the limiting surface 4, and the end of the rubber sleeve 1 away from the push portion 3 is a connecting end 14, and the side of the connecting end 14 facing away from the push portion 3 is used for electrically connecting to the circuit board of the electric energy meter.

[0029] In one embodiment, the push portion 3 and the main body 5 are both cylindrical, the diameter of the push portion 3 is larger than the diameter of the main body 5 , and the limit surface 4 is formed on one side surface of the push portion 3 facing the main body 5 .

[0030] The rubber sleeve 1 includes a large diameter section 11 and a small diameter section 12 connected to each other. The outer diameter of the large diameter section 11 is larger than the outer diameter of the small diameter section 12. The end of the large diameter section 11 away from the small diameter section 12 abuts against the limiting surface 4. The outer periphery of the large diameter section 11 is used for sealing and assembling with the housing 24 of the electric energy meter. The end of the small diameter section 12 away from the pressing part 3 forms the connecting end 14.

[0031] In this embodiment, the diameter of the push portion 3 is greater than the diameter of the main body 5. Due to the deformation of the diameter between the push portion 3 and the main body 5, the limiting surface 4 is naturally formed between the push portion 3 and the main body 5. In addition, the circular push portion 3 and main body 5 are also easy to design and manufacture.

[0032] The large diameter section 11 and the small diameter section 12 of the rubber sleeve 1 are also circular structures. The outer diameter of the large diameter section 11 is larger than the outer diameter of the small diameter section 12. When installed on the electric energy meter, the limit surface 4 abuts against the large diameter section 11, and the outer peripheral surface of the large diameter section 11 is sealed with the housing 24 of the electric energy meter, thereby achieving a seal between the key assembly and the housing 24 to prevent foreign matter from entering the key assembly. The end of the small diameter section 12 away from the large diameter section 11 forms a connecting end 14, and the end surface of the connecting end 14 facing away from the pressing portion 3 has a conductive layer. The electric energy meter described in this embodiment is a carbon film electric energy meter. When the pressing rod 2 is pressed, the connecting end 14 moves toward the circuit board of the electric energy meter with the pressing rod 2, so that the conductive layer contacts the circuit board, thereby changing the current path on the circuit board.

[0033] In one embodiment, the end of the large diameter section 11 away from the pressing portion 3 has a connecting plate 17, and the connecting plate 17 is connected to the hole wall of the insertion hole 16. The end of the small diameter section 12 close to the pressing portion 3 is connected to the side of the connecting plate 17 facing away from the pressing portion 3, and the connecting plate 17 is provided with a through hole 18.

[0034] The small diameter section 12 is connected to the large diameter section 11 via the connecting plate 17, which is convenient for design and manufacture.

[0035] The rubber sleeve 1 further includes an inserting section 23 , which is connected to an end of the large diameter section 11 away from the pressing portion 3 , and is used for inserting with a housing 24 of the electric energy meter.

[0036] The plug-in section 23 is arranged at one end of the large diameter section 11 away from the push portion 3, the outer diameter of the plug-in section 23 is consistent with the outer diameter of the large diameter section 11, the inner diameter of the plug-in section 23 is consistent with the inner diameter of the large diameter section 11, the plug-in section 23 and the large diameter section 11 are integrally formed, and the plug-in section 23 is used to plug with the housing 24 of the electric energy meter. The connection strength between the rubber sleeve 1 and the housing 24 of the electric energy meter can be increased.

[0037] In one embodiment, a guide groove 19 is provided on the hole wall of the through hole 18 on the connecting plate 17, a guide hole 13 is provided on the small diameter section 12, the guide hole 13 is connected to the guide groove 19, the guide hole 13 and the guide groove 19 extend along the axial direction of the push rod 2, a long plate 6 is provided in the circumferential direction of the main body 5, the long plate 6 extends along the axial direction of the push rod 2, a portion of the long plate 6 close to the push portion 3 is clamped with the guide groove 19, and a portion of the long plate 6 away from the push portion 3 is plugged into the guide hole 13.

[0038] In this embodiment, two long boards 6 are provided, and the two long boards 6 are respectively arranged on opposite sides of the main body 5. The side of the long board 6 facing away from the main body is inserted into the guide groove 19 and the guide hole 13. The guide groove 19 and the guide hole 13 can provide a plug-in guide for the long board 6 during installation, which is convenient for inserting the push rod 2 into the rubber sleeve 1, and can also play a role in straightening the long board 6, thereby increasing the connection area between the push rod 2 and the rubber sleeve 1, thereby increasing the connection strength between the push rod 2 and the rubber sleeve 1.

[0039] In one embodiment, the end of the long plate 6 away from the pressing portion 3 has a stopping step 8, and the stopping step 8 is used to stop and cooperate with the housing 24 of the electric energy meter on the side facing the pressing portion 3.

[0040] In this embodiment, a groove 7 is provided on the side of the long plate 6 facing away from the main body 5, and the side wall of the groove 7 facing the pressing portion 3 forms the stopping step 8. The stopping step 8 can cooperate with the housing 24 of the electric energy meter to prevent the pressing rod 2 from escaping from the housing 24, thereby providing stability to the pressing rod 2.

[0041] In one embodiment, a slope 9 is provided on a side of the stopping step 8 facing away from the pressing portion 3 , and the slope 9 is inclined from a side away from the main body 5 to a side close to the main body 5 .

[0042] The shell 24 of the electric energy meter described in this embodiment is made of plastic. The slope 9 can cooperate with the guiding inclined surface 20 on the electric energy meter shell 24, so that the shell 24 of the electric energy meter can have a certain expansion to guide the part of the main body 5 located below the groove 7 to enter the shell 24 of the electric energy meter, which is convenient for installation.

[0043] In one embodiment, one end of the main body 5 away from the pressing part 3 is connected to the small diameter section 12. The main body 5 is connected to the small diameter section 12, which can increase the stability between the pressing rod 2 and the rubber sleeve 1.

[0044] In one embodiment, a connection hole 15 is provided on the side of the connection end 14 facing the push portion 3, and a plug post 10 is provided on the end of the main body 5 away from the push portion 3, and the plug post 10 is plugged into the connection hole 15. The plug post 10 is plugged into the connection hole 15 of the connection end 14 in a plug-in manner, which is convenient for connection.

[0045] The key button assembly of the embodiment of the utility model, when assembled with the shell 24 of the electric energy meter, is provided with a mounting hole 21 on the shell 24, and the key button assembly extends into the shell 24 through the mounting hole 21, and a slot 22 is provided on the hole wall of the mounting hole 21 close to the outer hole opening, and the plug-in section 23 is plugged into the slot 22, and a guide slope 20 is provided on the hole wall of the mounting hole 21 close to the inner hole opening, and the guide slope 20 is inclined from the side away from the main body 5 to the side close to the main body 5, and the guide slope 20 is used to cooperate with the slope 9 to guide the stop step 8 to enter the shell 24, and the stop step 8 is stopped and cooperated with the inner wall of the shell 24 toward the side of the pressing part 3, and the hole wall of the mounting hole 21 is sealed and assembled with the outer peripheral surface of the large diameter section 11.

[0046] Compared with the prior art, the button assembly according to the embodiment of the utility model eliminates the need for a spring and a sealing ring. When the button assembly is installed on the housing 24 of the electric energy meter, it is only necessary to assemble the button rod 2 and the rubber sleeve 1 on the housing 24. The rubber sleeve 1 itself is elastic. The rubber sleeve 1 can be compressed when the button rod 2 is pressed to produce elastic deformation, and can drive the button rod 2 to move in the process of autonomously restoring the deformation when the button rod 2 is released. In addition, the rubber sleeve 1 can also play a sealing role when installed on the housing 24 of the electric energy meter, thereby simplifying the structure and simplifying the steps.

[0047] In other embodiments, the main body 5 and the pressing portion 3 may be square structures.

[0048] In other embodiments, the stopping step 8 is protruded on the long plate 6 .

[0049] In addition, an embodiment of the present invention provides an electric energy meter, including a housing 24 and the above-mentioned button assembly.

[0050] In addition, if Figures 5 to 7 As shown, an embodiment of the utility model further provides an electric energy meter, including a shell 24 and the above-mentioned button assembly, wherein the shell 24 is provided with a mounting hole 21, and the button assembly extends into the shell 24 through the mounting hole 21, and a slot 22 is provided on the hole wall of the mounting hole 21 close to the outer hole opening, and the plug-in section 23 is plugged into the slot 22, and a guide slope 20 is provided on the hole wall of the mounting hole 21 close to the inner hole opening, and the guide slope 20 is inclined from the side away from the main body 5 to the side close to the main body 5, and the guide slope 20 is used to cooperate with the slope 9 to guide the stop step 8 to enter the shell 24, and the stop step 8 is stopped and cooperated with the inner wall of the shell 24 toward the side of the push portion 3, and the hole wall of the mounting hole 21 is sealed and assembled with the outer peripheral surface of the large diameter section 11.

[0051] A side surface of the groove 7 facing away from the pressing portion 3 is engaged with the guiding inclined surface 20 for blocking.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A button assembly, characterized in that: The invention comprises a push rod (2) and a rubber sleeve (1), wherein the push rod (2) comprises a push portion (3) and a main body (5) connected to each other, a limiting surface (4) is provided between the push portion (3) and the main body (5), the limiting surface (4) faces the side where the main body (5) is located, the rubber sleeve (1) is provided with a plug hole (16), the main body (5) is plugged into the plug hole (16), an end of the rubber sleeve (1) close to the push portion (3) abuts against the limiting surface (4), and an end of the rubber sleeve (1) away from the push portion (3) is a connecting end (14), and the side of the connecting end (14) facing away from the push portion (3) is used for electrically connecting to a circuit board of an electric energy meter.

2. The key assembly according to claim 1, characterized in that: The push portion (3) and the main body (5) are both cylindrical, the diameter of the push portion (3) is larger than the diameter of the main body (5), and the limit surface (4) is formed on one side of the push portion (3) facing the main body (5); The rubber sleeve (1) comprises a large diameter section (11) and a small diameter section (12) which are connected to each other. The outer diameter of the large diameter section (11) is larger than the outer diameter of the small diameter section (12). An end of the large diameter section (11) away from the small diameter section (12) abuts against the limit surface (4). The outer periphery of the large diameter section (11) is used for sealing and assembling with a housing (24) of the electric energy meter. An end of the small diameter section (12) away from the pressing portion (3) forms the connecting end (14).

3. The key assembly according to claim 2, characterized in that: The end of the large diameter section (11) away from the pressing part (3) is provided with a connecting plate (17), the connecting plate (17) is connected to the hole wall of the insertion hole (16), the end of the small diameter section (12) close to the pressing part (3) is connected to the side of the connecting plate (17) facing away from the pressing part (3), and the connecting plate (17) is provided with a through hole (18); The rubber sleeve (1) further comprises a plug-in section (23), the plug-in section (23) being connected to an end of the large diameter section (11) away from the pressing portion (3), and the plug-in section (23) being used for plugging with a housing (24) of an electric energy meter.

4. The key assembly according to claim 3, characterized in that: A guide groove (19) is provided on the hole wall of the through hole (18) on the connecting plate (17), a guide hole (13) is provided on the small diameter section (12), the guide hole (13) is communicated with the guide groove (19), the guide hole (13) and the guide groove (19) extend along the axial direction of the push rod (2), a long plate (6) is provided on the circumference of the main body (5), the long plate (6) extends along the axial direction of the push rod (2), a portion of the long plate (6) close to the push portion (3) is snap-fitted with the guide groove (19), and a portion of the long plate (6) away from the push portion (3) is plugged into the guide hole (13).

5. The key assembly according to claim 4, characterized in that: One end of the long plate (6) away from the pressing portion (3) has a stopping step (8), and the stopping step (8) faces the side of the pressing portion (3) and is used for stopping and cooperating with the housing (24) of the electric energy meter.

6. The key assembly according to claim 5, characterized in that: A slope (9) is provided on the side of the stopping step (8) facing away from the pressing portion (3), and the slope (9) is inclined from a side away from the main body (5) to a side close to the main body (5).

7. The key assembly according to claim 6, characterized in that: One end of the main body (5) away from the pressing portion (3) is connected to the small-diameter section (12).

8. The key assembly according to claim 7, characterized in that: A connecting hole (15) is provided on a side of the connecting end (14) facing the pressing portion (3), and an inserting column (10) is provided on an end of the main body (5) away from the pressing portion (3), wherein the inserting column (10) is inserted into the connecting hole (15).

9. An electric energy meter, characterized in that: It comprises a shell (24) and a key assembly as claimed in any one of claims 1 to 6.

10. An electric energy meter, characterized in that: The invention comprises a shell (24) and a key assembly as claimed in claim 7 or 8, wherein a mounting hole (21) is provided on the shell (24), and the key assembly extends into the shell (24) through the mounting hole (21); a slot (22) is provided on the hole wall of the mounting hole (21) close to the outer hole opening, and the plug-in section (23) is plugged into the slot (22); a guide slope (20) is provided on the hole wall of the mounting hole (21) close to the inner hole opening, and the guide slope (20) is inclined from a side away from the main body (5) to a side close to the main body (5); the guide slope (20) is used to cooperate with the slope (9) to guide the stop step (8) to enter the shell (24); the stop step (8) is stopped and cooperated with the inner wall of the shell (24) on the side facing the push portion (3); and the hole wall of the mounting hole (21) is sealed and assembled with the outer peripheral surface of the large diameter section (11).

Images