Key with lead seal protection

Abstract

The utility model discloses a button with lead seal protection, comprising a button body which is in sliding connection in a housing body, the button body is rotatably connected with an operation sheet body, one side of the operation sheet body far away from the button body is provided with a lead seal hole, the lead seal hole is internally provided with a cylindrical lead seal, and the cylindrical lead seal is provided with a lead seal. The shell body is provided with a shell lead sealing hole for accommodating the cylindrical lead seal; the bottom of the key body abuts against a silica gel plate fixedly arranged on the shell body. According to the technical scheme, the operation piece body can be limited on the shell body through the cylindrical lead seal, so that the key body is limited, the safety of the key is improved, and the key is prevented from being driven abnormally.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meter key protection, in particular to a key with lead seal protection. Background Art

[0002] In electric energy meter products, since it needs to count data such as power consumption, and some buttons have functions such as debugging and changing data, these buttons not only bear important functions, but also have high security risks. In the prior art, there is usually a lack of security protection for electric energy meter buttons, and there is a lack of technical means that can protect the safety of electric energy meter buttons and directly and clearly indicate the credibility of electric energy meter data.

[0003] For example, an "electricity meter and its key composite structure" disclosed in a Chinese patent document, with the announcement number: CN102509664B, discloses a top cover and a plurality of keys embedded in the top cover, and a plurality of switch keys opposite to the plurality of keys and arranged on a PCB main board, wherein the keys include a key column, a key cap embedded in the top cover and covering the top of the key column, and a key pressure plate, wherein the key pressure plate has a through hole, the key column passes through the through hole, the bottom end of the key column faces a corresponding switch key and directly contacts the corresponding switch key when the key cap is pressed, and the conductive particles and the key PCB board are eliminated by adding the key column and the key pressure plate, so that when the key is pressed in use, the key column directly acts on the switch key to achieve the purpose of key operation, but this solution does not take the safety of the key into consideration. Summary of the invention

[0004] In order to solve the key safety problem in the prior art, the utility model provides a key with lead seal protection. The key is protected by the lead seal, and in the protection state, the key is limited and cannot be operated.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A key with lead seal protection comprises: a key body slidably connected in a shell body, the key body is rotatably connected with an operating piece body, a lead seal hole is provided on the side of the operating piece body away from the key body, a cylindrical lead seal is provided in the lead seal hole, and the shell body is provided with a shell lead seal hole for accommodating the cylindrical lead seal; a silicone plate fixedly arranged on the shell body is abutted against the bottom of the key body. The cylindrical lead seal can be used to limit the operating piece body on the shell body, and then the key body can be limited, thereby improving the safety of the key and preventing the key from being abnormally driven.

[0007] Preferably, the button body is provided with a U-shaped groove, a fixing rod is provided in the U-shaped groove, and the operating piece body is rotatably connected to the fixing rod and rotates in the U-shaped groove. The fixing rod is used to realize the rotation between the operating piece and the button, so that the driving of the button in the vertical direction is converted into the rotation of the operating piece.

[0008] Preferably, the operating piece body is provided with a second fixing hole on the side away from the lead sealing hole, the fixing rod passes through the second fixing hole, and the middle of the operating piece body is provided with an elliptical through hole. The restriction of the button is indirectly achieved by restricting and fixing the operating member.

[0009] Preferably, the button body is provided with a circular base, the circular base is located at the bottom of the U-shaped groove, the bottom of the circular base is provided with a bottom protrusion, and the bottom protrusion is cylindrical. The bottom protrusion is used to shorten the stroke of the button, making it easier to operate the button.

[0010] Preferably, the bottom surface of the silicone plate is provided with a silicone cylindrical protrusion, the edge of the silicone cylindrical protrusion is provided with a circular groove, and the silicone cylindrical protrusion corresponds to the bottom of the key body. The circular groove facilitates the expansion and contraction of the silicone cylindrical protrusion, and the driving conversion of the key is realized through the silicone cylindrical protrusion.

[0011] Preferably, a metal iron plate is connected to the bottom of the shell body, and the silicone plate is fixedly arranged between the metal iron plate and the bottom of the shell body; the metal iron plate is provided with a circular silicone opening, and the silicone plate is controlled by the metal iron plate.

[0012] Preferably, a bolt column is provided at the bottom of the shell body, the bolt column passes through the silicone plate and abuts against the metal iron plate, and the metal iron plate is provided with a bolt threadedly connected to the bolt column. The metal iron plate is fixed by bolt connection, and the silicone plate is indirectly fixed.

[0013] Preferably, the silicone cylindrical protrusion corresponds to a PCB assembly board, the PCB assembly board and the silicone plate are respectively located on both sides of the metal iron plate, and the silicone cylindrical protrusion abuts against the PCB assembly board when extending downward. The key signal is obtained through the PCB assembly board.

[0014] The utility model has the following advantages:

[0015] (1) The cylindrical lead seal can be used to limit the position of the operating piece on the shell body, thereby limiting the position of the button body, thereby improving the safety of the button and preventing the button from being driven abnormally; (2) The rotation between the operating piece and the button is achieved through the fixing rod, so that the drive of the button in the vertical direction is converted into the rotation of the operating piece; (3) The button is indirectly limited by limiting and fixing the operating piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are merely exemplary. A person skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure in the embodiment.

[0018] Figure 2 Schematic diagram of the explosion structure in the embodiment.

[0019] Figure 3 2 is a schematic cross-sectional view of an explosion structure in an embodiment.

[0020] In the figure:

[0021] 1-operating piece body; 2-housing body; 3-button body; 4-silicone plate; 5-metal iron plate; 6-PCB assembly board; 7-lead sealing hole; 8-elliptical through hole; 9-silicone cylindrical protrusion; 10-bolt column; 11-fixing rod. DETAILED DESCRIPTION

[0022] Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present utility model.

[0023] like Figure 1-3 As shown, in a preferred embodiment, the utility model discloses a key with lead seal protection, comprising: an operating piece body 1, the operating piece body 1 comprising a first fixing portion, a central through hole portion and a second fixing portion arranged in sequence. The first fixing portion comprises a semicircular protrusion piece, the semicircular protrusion piece is provided with a lead seal hole 7, the lead seal hole 7 is a circular through hole, the lead seal hole 7 penetrates the two side surfaces of the first fixing portion, the lead seal hole 7 penetrates the two sides of the operating piece body 1 and connects the two side end surfaces of the operating piece body 1. The semicircular protrusion piece is a metal pick.

[0024] The central through hole portion includes an elliptical through hole 8, and the elliptical through hole 8 passes through the two side surfaces of the central through hole portion, and the elliptical through hole 8 passes through the two sides of the operating piece body 1 and connects the two side end surfaces of the operating piece body 1. The shape of the elliptical through hole 8 is an ellipse, and the major axis radius and the minor axis radius of the ellipse are both greater than the diameter of the lead seal hole 7. The central through hole portion includes a first protrusion, and the first protrusion is square, and the square includes one of a square or a rectangle. Figure 1 From the perspective shown, the first protrusion extends downward from the operating piece body 1 , and the first protrusion and the operating piece body 1 form a 90-degree angle.

[0025] The second fixing portion includes a second fixing hole and a second semicircular protrusion. The semicircular diameter of the second semicircular protrusion is smaller than the semicircular diameter of the semicircular protrusion, and the second semicircular protrusion is connected with an extension area, and the width of the extension area is the same as the semicircular diameter of the second semicircular protrusion. The extension area is connected to the central through hole portion, and the two ends of the extension area are respectively connected to the second semicircular protrusion and the central through hole portion. A gradient is provided at the connection between the extension area and the central through hole portion, and one side of the extension area is located on the same straight line as the side where the first protrusion in the central through hole portion is located. The second fixing hole is located in the extension area, and the cross-section of the second fixing hole is circular. The second fixing hole passes through the two side surfaces of the second fixing portion, and the second fixing hole passes through the two side surfaces of the operating piece body 1 and connects the two side surfaces of the operating piece body 1.

[0026] The operating piece body 1 is connected with a key body 3, and the key body 3 includes a circular base and a cylindrical protrusion arranged in sequence, and the cylindrical protrusion is rotatably connected to the operating piece body 1. A U-shaped groove is provided in the cylindrical protrusion, and the U-shaped groove divides the cylindrical protrusion into two parts. The operating piece body 1 is connected to the U-shaped groove, and a fixing rod 11 is provided in the U-shaped groove. The fixing rod 11 is fixedly connected to the U-shaped groove, and the two ends of the fixing rod 11 are respectively fixedly connected to the two parts of the cylindrical protrusion, and the two ends of the fixing rod 11 are respectively fixedly connected to the corresponding two side walls of the U-shaped groove. The fixing rod 11 passes through the second fixing hole, and the fixing rod 11 is rotatably connected to the second fixing hole. The fixing rod 11 does not rotate in the U-shaped groove, and the operating piece body 1 rotates around the fixing rod 11 through the second fixing hole. The U-shaped groove extends downward to the circular base, so that the bottom of the U-shaped groove is close to the upper end surface of the circular base.

[0027] A spherical structure is provided on the top of the cylindrical protrusion, and the spherical structure is respectively located at two parts of the cylindrical protrusion separated by the U-shaped groove. A bottom protrusion is fixedly provided on the lower end surface of the circular base, and the cross section of the bottom protrusion is circular. The bottom protrusion extends in a direction away from the bottom surface of the circular base, and the height of the bottom protrusion is less than the height of the circular base.

[0028] The invention comprises a shell body 2 connected to a button body 3, wherein the shell body 2 comprises an operation area for accommodating an operation piece body 1, wherein the operation area is provided with an operation cavity with an opening facing upward, and the operation piece body 1 is located in the operation cavity. The side wall of the operation cavity is provided with a shell lead seal hole 7 corresponding to the lead seal hole 7, and the size of the shell lead seal hole 7 is the same as the size of the lead seal hole 7, and the shell lead seal hole 7 includes two holes located on both sides of the lead seal hole 7. The side wall of the operation cavity is provided with a shell through hole corresponding to the elliptical through hole 8, and the size of the shell through hole is smaller than the size of the elliptical through hole 8. The shell through hole includes two holes located on both sides of the elliptical through hole 8. The side of the operation cavity is provided with a side opening, and the operation piece body 1 extends outward from the side opening, and at this time, the length of the operation piece body 1 is greater than the length of the operation cavity.

[0029] The shell body 2 includes a key area for accommodating the key body 3, and the key area includes a key cavity opening downward. The key body 3 is located in the key cavity, and the key cavity includes two upper and lower parts connected in sequence from top to bottom, and the upper and lower parts respectively accommodate the cylindrical protrusion and the circular base of the key body 3. The top end of the key cavity is connected to the side of the operation cavity, and the center line of the operation cavity and the center plane of the key cavity are located in the same plane. The top of the key cavity is provided with an oblique opening, and the oblique opening is connected to the key cavity and the operation cavity at the same time, and the oblique opening opens upward and extends downward. The center line of the oblique opening passes through the vertical line where the central axis of the key cavity is located. When the operating sheet body 1 rotates in the operating area, so that the operating sheet body 1 is vertical, at this time, the second fixing part of the operating sheet body 1 enters the key cavity, and the end of the second fixing part of the operating sheet body 1 enters the U-shaped groove toward the bottom of the U-shaped groove, and the key body 3 is driven to move up and down through the operating sheet body 1.

[0030] A cylindrical lead seal is arranged in the lead seal hole 7, and the cylindrical lead seal passes through the housing lead seal hole 7 on one side, the lead seal hole 7, and the housing lead seal hole 7 on the other side in sequence. When in use, the lead seal area of ​​the operating piece body 1 is fixed in the operating area of ​​the housing body 2, and the operating piece body 1 is limited by the cylindrical lead seal and cannot rotate, and the connection part between the key body 3 and the operating piece body 1 is surrounded by the key area of ​​the housing body 2, so that the key cannot be operated.

[0031] In other embodiments, the oblique opening extends to both sides of the operating piece body 1 and forms two acute angles and two obtuse angles with the operating piece body 1; an oblique stop block is provided in the oblique opening, and the oblique stop block has a limiting effect on the rotation direction of the operating piece body 1. When the oblique stop block exists in the oblique opening, even if the operating piece body 1 is not limited by the cylindrical lead seal, when the operating piece body 1 wants to rotate around the fixing rod 11, the upper edge of the operating piece body 1 is limited by the oblique stop block, so that the operating piece body 1 still cannot drive the button body 3.

[0032] In other embodiments, the shell body 2 includes a fixed surface, the operation area is located above the fixed surface, and the fixed surface is located outside the key area. The upper and lower parts of the key cavity are respectively located on the upper and lower sides of the fixed surface. The key body 3 moves up and down in the key cavity. When the key body 3 moves to the bottom of the key cavity, the bottom surface of the circular base reaches the bottom of the key cavity and is in the same horizontal plane as the bottom surface of the shell body 2.

[0033] In other embodiments, a silicone plate 4 is connected below the shell body 2, and the silicone plate 4 has the ability to deform in the opposite direction of the extrusion surface when being squeezed. The upper surface of the silicone plate 4 is a flat surface, and the lower surface of the silicone plate 4 is provided with a silicone cylindrical protrusion 9, and the silicone cylindrical protrusion 9 extends in a direction away from the shell body 2. A circular groove is provided around the silicone cylindrical protrusion 9, and the opening of the circular groove faces downward; the circular groove surrounds the silicone cylindrical protrusion 9, so that the thickness of the silicone plate 4 at the edge of the silicone cylindrical protrusion 9 is less than the thickness of the rest of the silicone plate 4. The height of the silicone cylindrical protrusion 9 is higher than the thickness of the silicone plate 4. The silicone cylindrical protrusion 9 corresponds to the bottom protrusion of the circular base, and the silicone cylindrical protrusion 9 and the bottom protrusion are coaxially arranged.

[0034] When in use, when the cylindrical lead seal of the operating piece body 1 is removed from the lead seal hole 7, the cylindrical lead seal no longer limits the operating piece body 1, and the operating piece body 1 is rotated so that the second fixing part enters the U-shaped groove. At this time, the operating piece body 1 vertically enters the U-shaped groove, and the operating piece body 1 is moved downward. The operating piece body 1 drives the key body 3 to move downward through the fixing rod 11, and the key body 3 moves downward in the key cavity, so that the bottom of the circular base abuts against the upper end surface of the silicone plate 4. The key body 3 continues to move downward in the key cavity, so that the circular base presses the silicone plate 4 downward, and at this time, the silicone cylindrical protrusion 9 in the silicone plate 4 is squeezed and moves downward, and the silicone plate 4 at the U-shaped groove around the silicone cylindrical protrusion 9 is bent.

[0035] In other embodiments, the silicone plate 4 is fixedly connected to the bottom of the shell body 2, the silicone plate 4 is connected to the metal iron plate 5, the metal iron plate 5 and the shell body 2 are respectively connected to the two sides of the silicone plate 4, and the metal iron plate 5 is fixedly connected to the silicone plate 4.

[0036] The bottom of the fixing surface is provided with a bolt column 10, which is an elongated cylindrical structure with a threaded hole; the silicone plate 4 is provided with a bolt column 10 hole, which is arranged corresponding to the bolt column 10; the metal iron plate 5 is provided with a bolt groove, which is a semicircular groove, and the bolt groove is symmetrically arranged with the bolt column 10 hole. The bolt column 10 extends downward through the bolt column 10 hole to a bolt groove, and the bottom of the bolt groove is connected to the top threaded hole of the bolt column 10. It includes a bolt threadedly matched with the bolt column 10, and the bolt groove through which the bolt passes enters the bolt column 10 and is threadedly connected with the bolt column 10. The bolt fixes the metal iron plate 5 to the bottom of the shell body 2, and the metal iron plate 5 fixes the silicone plate 4 to the bottom of the shell body 2. The silicone plate 4 will not be pushed by the key body 3 to produce displacement, but the silicone cylindrical protrusion 9 in the silicone plate 4 can be ejected.

[0037] In other embodiments, a PCB assembly board 6 is provided below the metal iron plate 5, and the PCB assembly board 6 is provided with a key electronic component corresponding to the silicone cylindrical protrusion 9, and the key electronic component is located directly below the silicone cylindrical protrusion 9, and the key electronic component extends upward. When the silicone cylindrical protrusion 9 is pushed downward by the key body 3, the lower end of the silicone cylindrical protrusion 9 abuts against the upper end of the key electronic component, thereby triggering the switch.

[0038] In other embodiments, the shape of the silicone plate 4 is semi-elliptical, and half of the major axis of the ellipse is retained, and the arc at the edge of the silicone plate 4 is tangent to the outer edge surface of the lower part of the key cavity; the shape of the metal iron plate 5 is the same as that of the silicone plate 4. The space occupied by the silicone plate 4 and the metal iron plate 5 is reduced.

[0039] In other embodiments, the metal iron plate 5 is provided with a circular silicone opening, and the circular silicone opening corresponds to the silicone cylindrical protrusion 9 on the silicone plate 4; the silicone cylindrical protrusion 9 extends downward through the circular silicone opening. When in use, first remove the cylindrical lead seal to release the limit on the operating member, and then press the key body 3 downward through the operating member, and the key body 3 presses the position of the silicone cylindrical protrusion 9 on the silicone plate 4, so that the silicone cylindrical protrusion 9 passes downward through the metal iron plate 5 and contacts the PCB assembly board 6.

[0040] These modifications or improvements made on the basis of the present utility model without departing from the spirit of the present utility model shall all fall within the scope of protection required by the present utility model.

Claims

1. A key with lead seal protection, characterized in that: include: A key body is slidably connected to the shell body, the key body is rotatably connected to the operating piece body, a lead seal hole is provided on the side of the operating piece body away from the key body, a cylindrical lead seal is provided in the lead seal hole, and the shell body is provided with a shell lead seal hole for accommodating the cylindrical lead seal; a silicone plate fixedly arranged on the shell body is abutted against the bottom of the key body.

2. A key with lead seal protection according to claim 1, characterized in that: The button body is provided with a U-shaped groove, a fixing rod is provided in the U-shaped groove, and the operating piece body is rotatably connected to the fixing rod and rotates in the U-shaped groove.

3. A key with lead seal protection according to claim 2, characterized in that: A second fixing hole is provided on the side of the operating piece body away from the lead sealing hole, the fixing rod passes through the second fixing hole, and an elliptical through hole is provided in the middle of the operating piece body.

4. A key with lead seal protection according to claim 1 or 2, characterized in that: The button body is provided with a circular base, the circular base is located at the bottom of the U-shaped groove, the bottom of the circular base is provided with a bottom protrusion, and the bottom protrusion is cylindrical.

5. A key with lead seal protection according to claim 1, 2 or 3, characterized in that: The bottom surface of the silicone plate is provided with a silicone cylindrical protrusion, the edge of the silicone cylindrical protrusion is provided with a circular groove, and the silicone cylindrical protrusion corresponds to the bottom of the key body.

6. A key with lead seal protection according to claim 5, characterized in that: The bottom of the shell body is connected with a metal iron plate, and the silicone plate is fixedly arranged between the metal iron plate and the bottom of the shell body; the metal iron plate is provided with a circular silicone opening.

7. A key with lead seal protection according to claim 6, characterized in that: A bolt column is provided at the bottom of the shell body. The bolt column passes through the silicone plate and abuts against the metal iron plate. The metal iron plate is provided with a bolt threadedly connected to the bolt column.

8. A key with lead seal protection according to claim 5, characterized in that: The silicone cylindrical protrusion corresponds to a PCB assembly plate, the PCB assembly plate and the silicone plate are respectively located on both sides of the metal iron plate, and the silicone cylindrical protrusion abuts against the PCB assembly plate when extending downward.

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