Balancing structure of pure flat reset switch and switch thereof

Abstract

The utility model discloses a balance structure of a pure flat reset switch and a switch thereof, comprising a panel base, a pressing plate arranged above the panel base, a hinge groove arranged in the center of the panel base, balance rods symmetrically arranged on the left and right sides of the top surface of the panel base, one upwarp end of each balance rod being connected with the bottom surface of the pressing plate, and the other upwarp end of each balance rod being connected with the hinge groove. A supporting frame assembly hinged in an X shape is arranged in the hinge groove, a penetrating groove communicated with the switch driving mechanism is formed in the center of the supporting frame assembly, and the pressing plate extrudes the switch driving mechanism through the penetrating groove. The utility model aims to provide a balance rod which is arranged below the pressing plate and is matched with the X-shaped supporting frame assembly to provide more stable support for the pressing plate under the combined action, so that the pressing plate can be kept stable when being pressed at each position and cannot incline or deform, and the service life of the pressing plate is prolonged. Through the dual support mode, the pressure is uniformly transmitted to the switch driving mechanism, and the switch failure caused by the deformation of the pressing plate is avoided.

Description

Technical Field

[0001] The utility model relates to the field of circuit switches, in particular to a balance structure of a pure flat reset switch and a switch thereof. Background Art

[0002] In modern electronic and electrical equipment, switches play a vital role as key components for controlling the on and off of circuits. With the advancement of technology and the continuous improvement of user needs, the design and function of switches are also constantly evolving and upgrading. Among them, the flat reset switch is highly favored by users due to its unique structure, simple and beautiful appearance design and excellent performance of fast response.

[0003] The pressing plate of the existing pure flat reset switch is designed as a pure flat structure to ensure aesthetics and easy cleaning. In actual use, when the pressing plate is pressed, the driving component moves accordingly, driving the swing arm and the swing piece to flip, and then contacting the conductive contact to complete the closing or opening of the circuit. However, although the pure flat reset switch has many advantages in design, in actual use, when the user presses the edge of the switch, the force point is concentrated on one side, resulting in the pressing plate being unable to move down smoothly to touch the driving component, thereby affecting the movement of the swing arm and the flipping of the swing piece, and there is a problem of easy failure.

[0004] In addition, in pursuit of thinness and aesthetics, most flat reset buttons are designed with a large area, which results in insufficient rigidity of the button. When the edge is stressed, the button is easily deformed and cannot effectively transmit pressure to the drive component, which also causes the drive component to move down incompletely, and the pendulum may not be able to fully contact the conductive contact, causing the switch to fail to turn on or off normally.

[0005] Therefore, the existing flat reset switch needs to be further optimized and improved to solve these problems exposed in actual use and improve its overall performance and user experience. Utility Model Content

[0006] The purpose of the utility model is to provide a balance structure of a pure flat reset switch and a switch thereof.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: a balancing structure of a pure flat reset switch, including a panel base, a pressing plate which can be lifted up and down relative to the panel base is provided above the panel base, a hinge groove is provided in the center of the panel base, and a "U"-shaped upward-tilted balancing rod is symmetrically provided on the left and right sides of the hinge groove on the top surface of the panel base, and a "X"-shaped hinged support frame assembly is provided in the hinge groove, the top of the support frame assembly is movably connected to the bottom of the upper pressing plate, the bottom of the support frame assembly is movably connected to the hinge groove, the center of the support frame assembly has a through groove connected to the switch driving mechanism, the pressing plate squeezes the switch driving mechanism through the through groove, and the upturned end of the balance rod is connected to the bottom surface of the pressing plate.

[0008] As a preferred solution of the utility model, the top surface of the panel base is symmetrically provided with mutually spaced anchor holes, the anchor holes are long strip-shaped holes, the two free ends of the balance bar are anchored in the corresponding anchor holes, and the bottom surface of the pressing plate near the left and right edges is respectively provided with a slot for accommodating the balance bar to be clamped and fixed. The balance bar can effectively disperse the pressure on the pressing plate, so that it is evenly distributed on the entire pressing plate, especially when pressing the edge of the pressing plate, the balance bar can ensure that the pressure is transmitted to the switch drive mechanism, avoiding failure problems caused by uneven force.

[0009] As a preferred solution of the utility model, the support frame assembly includes an outer support frame and an inner support frame that are cross-hinged together, the left and right ends of the upper corner of the outer support frame are respectively hinged to the bottom of the pressing plate, and the left and right ends of the lower corner of the inner support frame are respectively hinged in the hinge groove. The outer support frame and the inner support frame that are cross-hinged together in an X-shape can provide stable support when the pressing plate is subjected to force, ensuring that the pressing plate can remain stable when pressed at various positions without tilting or deformation. The problem that the existing switch is prone to failure when the edge is pressed is effectively avoided, and the overall reliability of the switch is improved.

[0010] As a further solution of the utility model, the outer support frame and the inner support frame are both flat rectangular frame structures, and are cross-hinged together, and the through groove is arranged in the center of the inner support frame.

[0011] As a further solution of the utility model, lower guide grooves are respectively provided on the left and right sides of the lower corner of the outer support frame in the hinge groove, and lower sliding blocks are respectively provided on the left and right side walls of the lower corner of the outer support frame, which can be inserted into the corresponding lower guide grooves and slide back and forth.

[0012] As a further solution of the utility model, upper guide grooves are respectively provided on the left and right sides of the upper corner of the inner support frame at the bottom of the pressing plate, and upper sliding blocks are respectively provided on the left and right side walls of the upper corner of the inner support frame, which can be inserted into the corresponding upper guide grooves and slide back and forth.

[0013] The utility model also provides a switch, including the balancing structure of the pure flat reset switch as described above, wherein a driving shell that can be connected to the hinge groove is buckled at the bottom of the panel base, the switch driving mechanism is accommodated in the driving shell, the pressing plate covers the panel base, the panel shell is buckled on the pressing plate, and the driving shell is penetrated by a wiring hole.

[0014] As a preferred solution of the utility model, the switch drive mechanism includes an insulating shell with a cavity inside and a swing seat arranged in the insulating shell, the left and right sides of the swing seat are hinged to the side walls of the inner cavity of the insulating shell, the insulating shell is clamped in the drive shell, a swing arm extending laterally is provided on the front outer wall of the swing seat, a swing piece that can swing up and down is provided on the inner wall of the insulating shell opposite to the swing arm, the outer end of the swing arm is movably clamped on the outer edge of the swing piece, a first conductive contact is provided on the swing piece extending to one side of the swing seat, a second conductive contact and a third conductive contact are respectively provided above and below the first conductive contact, and a conductive contact that can pass through the outer side of the insulating shell is respectively provided. The metal conductive sheet is dynamically electrically connected to the input terminal of the swing sheet, and the output terminal is electrically connected to the second conductive contact and the third conductive contact through the metal conductive sheet, one end of the input terminal and the output terminal respectively pass through the corresponding wiring holes, a vertical guide groove is penetrated at the top of the insulating shell, and a swing arm driving component is provided in the vertical guide groove, which can move up and down along the vertical guide groove and then drive the swing seat to flip and swing up and down with the swing arm. When the bottom of the pressing plate moves downward, the swing arm driving component is squeezed to move downward, so that the swing arm driving component drives the swing arm to drive the swing sheet to flip and swing up and down, so that the first conductive contact is respectively in contact with the second conductive contact and the third conductive contact and conducts electricity.

[0015] As a preferred solution of the utility model, a movable hole is provided through the center of the swing seat from top to bottom, the swing arm driving assembly includes an extrusion block which can be moved up and down and inserted in the vertical guide groove, the bottom of the extrusion block is provided with a movable groove which is concave upward, a first spring groove is provided laterally in the center of the movable groove, a first return spring is embedded in the first spring groove, a translation block which can pass downward through the movable hole is provided at the bottom of the extrusion block, stoppers which can extend upward into the movable groove are provided at intervals on the top of the translation block, the two stoppers respectively abut against the two ends of the first return spring, a second return spring is pressed against the bottom of the translation block, first extrusion inclined surfaces are provided at the two ends of the translation block, and second extrusion inclined surfaces which can cooperate with the corresponding first extrusion inclined surfaces are provided on the top surface of the swing seat.

[0016] As a further solution of the utility model, a spring sheet with one end tilted upward and pressed against the bottom surface of the pressing plate is provided on the top of the insulating shell.

[0017] In summary, the utility model has the following beneficial effects compared to the prior art: the utility model can effectively disperse the pressure on the pressing plate and evenly distribute it on the entire pressing plate by providing an "X"-shaped support frame assembly that cross-folds front and back and a balance bar that supports the bottom of the pressing plate on the left and right sides under the pressing plate. In particular, when pressing the upper edge of the pressing plate, the balance bar can not only ensure the balanced transmission of pressure, but also provide additional support force, further enhancing the rigidity and anti-deformation ability of the pressing plate. With the joint action of the X-shaped support frame assembly, it can provide more stable support when the pressing plate is subjected to force, ensuring that the pressing plate can remain stable when pressed at various positions without tilting or deformation. Through this double support method, the pressure is evenly transmitted to the switch drive mechanism, avoiding switch failure caused by deformation of the pressing plate. At the same time, this double support method provides a smoother and more consistent pressing feel. No matter where the pressing plate is pressed, the same feedback can be obtained, the switch responds faster, the operation is more sensitive, and the user experience is improved. In addition, the balance bar and X-shaped support frame assembly ensure that the pressure plate is evenly stressed when pressed at different positions, reducing local stress concentration, reducing wear on the pressure plate and drive assembly, and extending the overall service life of the switch. In addition, compared with the traditional vertical swing method, the flat reset switch can be made thinner while ensuring the stability and consistency of the switch, effectively reducing space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the exploded structural views of the balance structure of the pure flat reset switch of the utility model.

[0019] Figure 2 This is the second exploded structural view of the balance structure of the pure flat reset switch of the utility model.

[0020] Figure 3 This is one of the cross-sectional structural views of the balance structure of the pure flat reset switch of the utility model, and an enlarged view of a local area in the figure.

[0021] Figure 4 This is the second cross-sectional structural view of the balance structure of the pure flat reset switch of the utility model, and an enlarged view of a local area in the figure.

[0022] Figure 5 This is one of the cross-sectional structural views after the balance structure of the pure flat reset switch of the utility model is decomposed.

[0023] Figure 6 This is the second cross-sectional structural view of the balanced structure of the pure flat reset switch of the utility model after decomposition.

[0024] Figure 7This is the third cross-sectional structural view of the decomposed balance structure of the pure flat reset switch of the utility model.

[0025] Figure 8 This is one of the overall cross-sectional structural views of the switch of the utility model, as well as an enlarged view of a local area in the figure.

[0026] Fig. 9 This is the second overall cross-sectional structural view of the switch of the utility model, and an enlarged view of a local area in the figure.

[0027] Fig.10 This is an overall exploded structural view of the switch of the utility model.

[0028] Fig.11 This is one of the cross-sectional structural views of the switch drive mechanism in the switch of the utility model.

[0029] Fig.12 This is the second cross-sectional structural view of the switch drive mechanism in the switch of the utility model, and a schematic diagram of the dynamic changes of the swing arm drive assembly in the local area of ​​the figure driving the swing arm to swing the swing piece up and down.

[0030] Explanation of reference numerals: 1. panel base; 2. balance bar; 3. support frame assembly; 4. pressing plate; 5. switch drive mechanism; 6. drive shell; 7. panel shell; 9. swing arm drive assembly; 11. hinge slot; 12. anchor hole; 13. lower guide slot; 30. through slot; 31. outer support frame; 32. inner support frame; 33. lower slider; 34. upper slider; 41. slot; 42. upper guide slot; 50. vertical guide slot; 51. insulating shell; 52. swing seat; 53. swing arm; 54. swing piece; 55. first conductive contact; 56. second conductive contact; 57. third conductive contact; 58. movable hole; 59. spring piece; 61. wiring hole; 81. incoming terminal; 82. outgoing terminal; 91. extrusion block; 92. Moving groove; 93. Translation block; 94. First return spring; 95. Second return spring; 96. First extrusion slope; 97. Second extrusion slope; 921. First spring groove; 931. Stop block. DETAILED DESCRIPTION

[0031] The following specific implementation contents provide a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0032] In addition, spatially related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatially related words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 10 The balancing structure of a pure flat reset switch shown in the figure includes a panel base 1, and the panel base 1 is covered with a pressing plate 4 that can be lifted up and down relative to the panel base 1. A hinge groove 11 is provided in the center of the panel base 1, and anchor holes 12 are symmetrically provided on the left and right sides of the hinge groove 11 on the top surface of the panel base 1. The anchor holes 12 are long and narrow holes. A balance rod 2 that is tilted upward in a "U" shape is provided on the top surface of the panel base 1. The two free ends of the balance rod 2 are anchored in the corresponding anchor holes 12. Slots 41 are provided on the bottom surface of the pressing plate 4 near the left and right edges. The balance rod 2 is connected to the bottom surface of the pressing plate 4 by being inserted into the corresponding slot 41 with one upturned end. A support frame assembly 3 is provided in the hinge groove 11 in an "X" shape. The top of the support frame assembly 3 is movably connected to the bottom of the pressing plate 4, and the bottom of the support frame assembly 3 is movably connected to the hinge groove 11. The center of the support frame assembly 3 has a through groove 30 connected to the switch drive mechanism 5. After the pressing plate 4 is pressed down, there is a convex block on the bottom of the pressing plate 4, and the convex block squeezes the switch drive mechanism 5 through the through groove 30. The balance bar 2 can disperse the pressure of the pressing plate 4 to the left and right ends of the pressing plate 4, and can effectively disperse the pressure on the pressing plate 4 so that it is evenly distributed on the entire pressing plate 4. Especially at the edge of the pressing plate 4, the balance bar 2 can ensure that the pressure is transmitted to the switch drive mechanism 5 to avoid failure problems caused by uneven force. The "X"-shaped hinged support frame assembly 3 ensures that the pressure of the pressing plate 4 is dispersed to the front and rear ends of the pressing plate 4, ensuring that the pressing plate 4 can remain stable when pressed at various positions, without tilting or deformation, and ensuring that the pressing plate 4 can be raised and lowered synchronously.

[0034] Among them, Figures 1 to 7The figure shows an embodiment of the support frame assembly 3 in the utility model, which includes an outer support frame 31 and an inner support frame 32 which are cross-hinged together, the left and right ends of the upper corner of the outer support frame 31 are respectively hinged to the bottom of the pressing plate 4, and the left and right ends of the lower corner of the inner support frame 32 are respectively hinged in the hinge groove 11. In this embodiment, the outer support frame 31 and the inner support frame 32 are both flat rectangular frame structures, and are cross-hinged together, and the through groove 30 is set in the center of the inner support frame 32, and can expose the top operating end of the driving mechanism 5. Lower guide grooves 13 are provided in the hinge groove 11 at the left and right sides of the lower corner of the outer support frame 31, and lower sliders 33 that can be inserted into the corresponding lower guide grooves 13 and slide forward and backward are provided on the left and right side walls of the lower corner of the outer support frame 31; upper guide grooves 42 are provided at the bottom of the pressing plate 4 at the left and right sides of the upper corner of the inner support frame 32, and upper sliders 34 that can be inserted into the corresponding upper guide grooves 42 and slide forward and backward are provided on the left and right side walls of the upper corner of the inner support frame 32. It should be noted that in this embodiment, two rectangular frames are laid flat and cross-hinged to form an "X"-shaped support frame assembly 3. Another embodiment of the support frame assembly 3 can also use two separate "X"-shaped brackets to be spaced to form the support frame assembly 3, so that the through groove 30 is between the two "X"-shaped brackets. In the above two embodiments, the top and bottom ends of the "X"-shaped support frame assembly 3 on the same side are hinged to the pressing plate 4 and the hinge groove 11 respectively, and the two top and bottom ends on the other side use the upper guide groove 42 and the lower guide groove 13 to limit the non-hinged end of the "X"-shaped support frame assembly 3 to move forward and backward in the horizontal direction when the pressing plate 4 is pressed down. The "X"-shaped support frame assembly 3 will perform a cross-folding action in the front and back directions when the pressing plate 4 is pressed down. The balance bar 2 on the left and right sides of the support frame assembly 3 can effectively provide support and balance for the pressing plate 4, ensuring that the pressing plate 4 is evenly stressed when pressed at different positions, reducing local stress concentration, and effectively avoiding the problem that the existing pure flat reset switch is prone to failure when pressed at the edge, thereby improving the overall reliability and rigidity of the pressing plate 4.

[0035] In addition, if Figures 8 to 12The switch embodiment with the above-mentioned balancing structure provided by the utility model is shown. A driving shell 6 that can be connected to the hinge groove 11 is buckled at the bottom of the panel base 1, and the switch driving mechanism 5 is accommodated in the driving shell 6. The pressing plate 4 covers the panel base 1, and a panel shell 7 is buckled on the pressing plate 4. A wiring hole 61 is penetrated on the driving shell 6. The panel shell 7 covers the entire pressing plate 4 below, and the connection between the pressing plate 4 and the bottom is at the bottom of the pressing plate 4. The surrounding of the panel base 1 is provided with an upwardly extending surrounding edge 8 to enclose the pressing plate 4, forming a structure that cannot be disassembled. This method prevents the user from arbitrarily buckling the panel shell 7, causing the internal conductive components to be exposed, and the risk of electric shock to personnel.

[0036] Specifically, the switch drive mechanism 5 includes an insulating shell 51 with a cavity inside and a swing seat 52 arranged in the insulating shell 51, and a movable hole 58 is passed through the center of the swing seat 52 from top to bottom. The left and right sides of the swing seat 52 are hinged to the side walls of the inner cavity of the insulating shell 51, and the insulating shell 51 is clamped in the drive shell 6. A swing arm 53 extending laterally is provided on the front outer wall of the swing seat 52, and a swing piece 54 that can swing up and down is provided on the inner wall of the insulating shell 51 opposite to the swing arm 53. The outer end of the swing arm 53 is movably clamped on the outer edge of the swing piece 54, and a first conductive contact 55 is provided on the swing piece 54 extending to one side of the swing seat 52, and a second conductive contact 56 and a third conductive contact 57 are respectively provided above and below the first conductive contact 55, and a second conductive contact 56 and a third conductive contact 57 are respectively provided on the outer side of the insulating shell 51. An input terminal 81 that can be dynamically electrically connected to the swing piece 54 through a metal conductive sheet and an output terminal 82 that is electrically connected to the second conductive contact 56 and the third conductive contact 57 respectively through the metal conductive sheet are provided. One end of the input terminal 81 and the output terminal 82 pass through the corresponding wiring holes 61 respectively. A vertical guide groove 50 is penetrated at the top of the insulating shell 51. A swing arm driving component 9 is provided in the vertical guide groove 50, which can move up and down along the vertical guide groove 50 and drive the swing seat 52 to swing up and down with the swing arm 53. When the bottom of the pressing plate 4 moves downward, the swing arm driving component 9 is squeezed to move downward, so that the swing arm driving component 9 drives the swing arm 53 to drive the swing piece 54 to swing up and down, so that the first conductive contact 55 contacts and conducts electricity with the second conductive contact 56 and the third conductive contact 57 respectively. The swing arm drive assembly 9 includes an extrusion block 91 that can move up and down and is inserted into the vertical guide groove 50. The bottom of the extrusion block 91 is provided with a moving groove 92 that is concave upward. A first spring groove 921 is transversely provided in the center of the moving groove 92. A first return spring 94 is embedded in the first spring groove 921. A translation block 93 whose bottom can pass through the movable hole 58 downward is provided at the bottom of the extrusion block 91. Stoppers 931 that can extend upward into the moving groove 92 are provided at intervals on the top of the translation block 93. The two stoppers 931 respectively abut against the two ends of the first return spring 94. A second return spring 95 is pressed against the bottom of the translation block 93. The bottom end of the second return spring 95 presses against the bottom wall of the inner cavity of the insulating shell 51. First downward extrusion slopes 96 are provided at the two ends of the translation block 93, and second extrusion slopes 97 that can cooperate with the corresponding first extrusion slopes 96 are provided on the top surface of the swing seat 52. It can be clearly seen from the figure that the two first extrusion slopes 96 are respectively arranged on two small triangular blocks protruding downward from the bottom of the translation block 93, and the second extrusion slopes 97 are respectively arranged on two small triangular blocks protruding upward from both ends of the top surface of the swing seat 52.When the panel shell 7 is pressed at any position, the panel shell 7 and the pressing plate 4 will move downward, and the support frame assembly 3 composed of the outer support frame 31 and the inner support frame 32 which are cross-hinged and hinged together in an "X" shape will be compressed and folded. At this time, the balance bars 2 on the left and right sides will allow the panel shell 7 and the pressing plate 4 to descend steadily without tilting. The panel shell 7 and the pressing plate 4 will not be twisted and deformed due to the large area and insufficient rigidity of the pressing plate 4. During the descent process, the pressing plate 4 will squeeze the extrusion block 91 above the swing seat 52 to move downward along the vertical guide groove 50. At the same time, the extrusion block 91 pushes the translation block 93 to move downward synchronously. After the first extrusion inclined surface 96 at one end of the translation block 93 contacts the second extrusion inclined surface 97 on the top surface of the corresponding swing seat 52, it is squeezed between the inclined surfaces, and the translation block 93 is laterally displaced along the moving groove 92, and the first return spring 94 is compressed. At the same time, the swing seat 52 squeezed by the translation block 93 begins to flip downward, driving the swing arm 53 to swing up and down, so that the swing piece 54 can be swung synchronously, and then the first conductive contact 55 on the swing piece 54 and the third conductive contact 57 below can be in contact and conduct electricity. When the pressure applied to the panel housing 7 disappears, the second reset spring 95 at the bottom of the translation block 93 deforms and resets, pushing the translation block 93 upward, and the translation block 93 pushes the extrusion block 91 to move upward again. At this time, the first extrusion slope 96 and the second extrusion slope 97, which are squeezed together, separate. The first reset spring 94, which loses the lateral compression force, begins to stretch and reset, pushing the translation block 93 back to its original position again. When the panel housing 7 and the pressing plate 4 are pressed down again for the next time, since the other second extrusion slope 97 on the top surface of the swing seat 52 moves to the bottom of the first extrusion slope 96 at the other end of the translation block 93 as the swing seat 52 flips, when the translation block 93 is pressed down by the pressing plate 4 against the extrusion block 91, the second extrusion slope 97 of the swing seat 52 that is tilted up for a section will first contact with the first extrusion slope 96 on the corresponding side of the translation block 93 and produce extrusion. At this time, the translation block 93 will be pushed in the opposite direction of the swing piece 54, and the other end of the first return spring 94 will be squeezed. At the same time, the swing seat 52 is subjected to the downward pressure to produce an upward flip, and the swing arm 53 begins to rise, and drives the swing piece 54 to flip upward, so that the first conductive contact 55 leaves the third conductive contact 57 and then contacts and conducts electricity with the second conductive contact 56 above. When the pressure applied to the panel housing 7 disappears again, the above-mentioned second return spring 95 drives the translation block 93 to push the extrusion block 91 to reset again. In order to allow the panel housing 7 and the pressing plate 4 to smoothly move upward and reset after being pressed, a spring sheet 59 with one end tilted upward and pressed against the bottom surface of the pressing plate 4 is provided on the top of the insulating shell 51. The spring sheet 59 can bounce the pressing plate 4 and the panel housing 7 upward and reset immediately after the pressure applied to the panel housing 7 disappears, and ensure that the pressing plate 4 and the panel housing 7 will not loosen and shake up and down when there is no work.Compared with the traditional swinging switch drive mechanism 5, this up and down tilting method can make the entire switch thinner. Combined with the design of the "X"-shaped hinged support frame assembly 3 and the balance bar 2, while ensuring the stability and consistency of the switch, the entire flat reset switch can also be made thinner and reduce space occupancy.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A balancing structure of a pure flat reset switch, comprising a panel base (1), a pressing plate (4) being provided above the panel base (1) and capable of being lifted up and down relative to the panel base (1), characterized in that: A hinge groove (11) is provided in the center of the panel base (1), and a "U"-shaped upward-tilted balance bar (2) is symmetrically provided on the top surface of the panel base (1) on the left and right sides of the hinge groove (11). A support frame assembly (3) hinged in an "X" shape is provided in the hinge groove (11), the top of the support frame assembly (3) is movably connected to the bottom of the upper pressing plate (4), the bottom of the support frame assembly (3) is movably connected to the hinge groove (11), and the center of the support frame assembly (3) has a through groove (30) connected to the switch drive mechanism (5). When the pressing plate (4) is pressed down, the switch drive mechanism (5) is squeezed through the through groove (30), and the upturned end of the balance bar (2) is connected to the bottom surface of the pressing plate (4).

2. The balancing structure of the pure flat reset switch according to claim 1, characterized in that: Anchor holes (12) spaced apart from each other are symmetrically arranged on the top surface of the panel base (1), the anchor holes (12) being elongated holes, the two free ends of the balancing rod (2) being anchored in the corresponding anchor holes (12), and slots (41) capable of accommodating the balancing rod (2) to be snapped in and fixed are respectively arranged on the bottom surface of the pressing plate (4) near the left and right edges.

3. The balancing structure of the pure flat reset switch according to claim 2, characterized in that: The support frame assembly (3) comprises an outer support frame (31) and an inner support frame (32) which are cross-hinged together, the left and right ends of the upper corner of the outer support frame (31) are respectively hinged to the bottom of the pressing plate (4), and the left and right ends of the lower corner of the inner support frame (32) are respectively hinged in the hinge groove (11).

4. The balancing structure of the pure flat reset switch according to claim 3, characterized in that: The outer support frame (31) and the inner support frame (32) are both flat rectangular frame structures and are sleeved and cross-hinged together. The through groove (30) is arranged in the center of the inner support frame (32).

5. The balancing structure of the pure flat reset switch according to claim 4, characterized in that: Lower guide grooves (13) are respectively provided on the left and right sides of the lower corner of the outer support frame (31) in the hinge groove (11), and lower sliding blocks (33) are respectively provided on the left and right side walls of the lower corner of the outer support frame (31) and can be inserted into the corresponding lower guide grooves (13) and slide forward and backward.

6. The balancing structure of the pure flat reset switch according to claim 5, characterized in that: Upper guide grooves (42) are respectively provided at the bottom of the pressing plate (4) on the left and right sides of the upper corner of the inner support frame (32), and upper sliding blocks (34) are respectively provided on the left and right side walls of the upper corner of the inner support frame (32) and can be inserted into the corresponding upper guide grooves (42) and slide forward and backward.

7. A switch, characterized in that: A balancing structure of a pure flat reset switch as claimed in any one of claims 1 to 6, wherein a drive shell (6) capable of being connected to the hinge groove (11) is fastened at the bottom of the panel base (1), the switch drive mechanism (5) is accommodated in the drive shell (6), the pressing plate (4) covers the panel base (1), a panel shell (7) is fastened on the pressing plate (4), and a wiring hole (61) is penetrated on the drive shell (6).

8. The switch according to claim 7, characterized in that The switch drive mechanism (5) comprises an insulating shell (51) having a cavity therein and a swing seat (52) arranged in the insulating shell (51), the left and right sides of the swing seat (52) being hinged to the side walls of the inner cavity of the insulating shell (51), the insulating shell (51) being snapped into the drive shell (6), a swing arm (53) extending laterally being provided on the front outer wall of the swing seat (52), a swing piece (54) swingable up and down being provided on the inner wall of the insulating shell (51) opposite to the swing arm (53), the outer end of the swing arm (53) being movably snapped to the outer edge of the swing piece (54), a first conductive contact (55) extending toward one side of the swing seat (52) being provided on the swing piece (54), a second conductive contact (56) and a third conductive contact (57) being provided above and below the first conductive contact (55), respectively, and two conductive contacts (57) being provided on the outer side of the insulating shell (51) that can be connected to the swing piece through a metal conductive sheet. (54) an incoming terminal (81) of dynamic electrical connection and an outgoing terminal (82) electrically connected to the second conductive contact (56) and the third conductive contact (57) respectively through a metal conductive sheet, one end of the incoming terminal (81) and the outgoing terminal (82) respectively pass through the corresponding wiring hole (61), a vertical guide groove (50) is penetrated at the top of the insulating shell (51), and a swing arm driving component (9) is provided in the vertical guide groove (50) and can move up and down along the vertical guide groove (50) to drive the swing seat (52) to swing up and down with the swing arm (53), when the bottom of the pressing plate (4) moves downward, the swing arm driving component (9) is pressed downward, so that the swing arm driving component (9) drives the swing arm (53) to drive the swing sheet (54) to swing up and down, so that the first conductive contact (55) contacts with the second conductive contact (56) and the third conductive contact (57) respectively and conducts electricity.

9. The switch according to claim 8, characterized in that A movable hole (58) is formed in the center of the swing seat (52) and passes through the movable hole (58) vertically. The swing arm driving assembly (9) comprises an extrusion block (91) which is inserted into the vertical guide groove (50) and can move up and down. The bottom of the extrusion block (91) is provided with a movable groove (92) which is concave upward. A first spring groove (921) is formed in the center of the movable groove (92) and a first return spring (94) is embedded in the first spring groove (921). A flat spring (94) which can pass through the movable hole (58) downward is formed at the bottom of the extrusion block (91). A translation block (93), a stopper (931) capable of extending upward into the movement groove (92) is provided at intervals on the top of the translation block (93), the two stoppers (931) respectively abut against two ends of a first return spring (94), a second return spring (95) is pressed against the bottom of the translation block (93), first extrusion inclined surfaces (96) are respectively provided at two ends of the translation block (93), and second extrusion inclined surfaces (97) capable of matching with the corresponding first extrusion inclined surfaces (96) are respectively provided on the top surface of the swing seat (52).

10. The switch according to claim 8, characterized in that A spring sheet (59) is provided at the top of the insulating shell (51) with one end tilted upwards and resting against the bottom surface of the pressing plate (4).

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