Symmetrically-arranged cutting board structure switching device

Abstract

The invention relates to a symmetrically-arranged cutting board structure switching device which comprises a driving assembly and a cutting board assembly, the driving assembly is symmetrically arranged above the cutting board assembly, the driving assembly comprises a swing rod, a pulling block and a pressure spring, the swing rod is connected with the pulling block through a buckle, and the pressure spring is arranged between the swing rod and the pulling block. By adopting the symmetrically-arranged knife board structure switching device, the width of a functional part is reduced, meanwhile, the blockage of a pressure spring on the swinging of the knife board assembly is avoided, a normal gap switch can be researched and developed, and meanwhile, the contact reject ratio of the switch is also reduced. According to the device, the cutting board is stressed symmetrically and swings stably, the stability of a product is improved, and the service life of the product is prolonged.

Description

Technical Field

[0001] The invention relates to the field of wall mechanical switches, in particular to the field of knife-plate structure switches, and specifically refers to a symmetrically arranged knife-plate structure switch device. Background Art

[0002] Prior art 1: CN1317725C, piano-key switch; The flip spring and flip key are placed directly above the switch element, and the flip spring is directly pressed on the switch element. Its swing amplitude is the same as the swing amplitude of the top of the switch element. Due to the limitation of the total height of the switch, its swing amplitude is also limited. Therefore, the electrical gap between the moving contact and the static contact of the switch is less than the minimum requirement of 3mm required by the national standard. It can only be certified as a small gap switch. Its safety level is low. During user use, poor contact or no power often occurs due to the obstruction of the flip spring.

[0003] Prior art 2: CN217426615U wall switch; Its switch element has been widely used in the current market. Compared with the above technology, the flip spring is pressed on 424. Due to the lever magnification effect, the problem of limited electrical clearance is solved, and the normal clearance requirement of 3mm can be met. The height of the product can also be reduced. However, due to the eccentric arrangement, new problems are also generated: first, the flip spring is arranged in parallel with the contact, which increases the width dimension and its application range will be subject to certain restrictions; second, due to the asymmetric force, it has a certain adverse effect on the service life and safety of the product. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a symmetrically arranged blade structure switch device that meets the requirements of force symmetry, swing stability, and a wide range of applications.

[0005] In order to achieve the above-mentioned purpose, the symmetrically arranged blade structure switch device of the present invention is as follows: The main feature of the symmetrically arranged knife plate structure switch device is that the device includes a driving assembly and a knife plate assembly, the driving assembly is symmetrically arranged above the knife plate assembly, the driving assembly includes a rocker arm, a pull block and a pressure spring, the rocker arm and the pull block are connected by a snap, the pressure spring is placed between the rocker arm and the pull block, the rocker arm, the pull block and the pressure spring form an assembly and are assembled on the cover plate; the device also includes a reset spring, a reset piece and a cover plate, the reset piece is installed on the cover plate through the reset spring, the rocker arm, the pull block and the pressure spring are assembled into an assembly and assembled on the cover plate, and the elastic force of the pressure spring is greater than the pressure of the reset spring.

[0006] Preferably, the reset member includes a first feeler, a second feeler, a first contact surface and a second contact surface, the first feeler and the second feeler are respectively two corners of an eight-shaped shape on the reset member, the first contact surface and the second contact surface are two curved surfaces above the rocker arm symmetrically arranged with the rotation center as the symmetry axis, and in the initial state of the switch, the first feeler and the second feeler are located directly above the first contact surface and the second contact surface.

[0007] Preferably, under the action of the operating force, the first feeler contacts the first contact surface, and the first feeler slides on the first contact surface in a direction away from the center until it abuts against the rounded corner at the tail end of the first contact surface; the operating force continues to act, and the rocker arm begins to rotate until it reaches another state position of the switch device, thereby changing the on-off state of the switch; if the operating force is removed, the reset member returns to the initial state under the action of the reset spring.

[0008] Preferably, one end of the return spring is installed in a spring seat in the hollow part of the return member, and the other end is installed in a spring seat in the center of the cover plate.

[0009] Preferably, the pull block is provided with two symmetrical blade plate slots, and the two symmetrical blade plate slots press and drive the blade plate assembly.

[0010] Preferably, the pressure spring is arranged directly above the center of the knife plate assembly, and drives the knife plate assembly through the pull block.

[0011] Preferably, the device further comprises a knife plate slot pressing position, and the knife plate slot pressing positions are symmetrically arranged on both sides of the knife plate assembly.

[0012] Preferably, a rounded corner is provided on the surface of the pressing position of the blade clamping groove.

[0013] Preferably, the device further comprises a terminal assembly, an incoming line connecting piece, a first outgoing line connecting piece assembly and a second outgoing line connecting piece assembly, the terminal assembly comprises an incoming line terminal, a first outgoing line terminal and a second outgoing line terminal, the incoming line connecting piece is inserted into the incoming line terminal, and the first outgoing line connecting piece assembly and the second outgoing line connecting piece assembly are respectively inserted into the first outgoing line terminal and the second outgoing line terminal.

[0014] The symmetrically arranged blade structure switch device of the present invention reduces the width of the functional parts, while avoiding the obstruction of the pressure spring to the swing of the blade assembly, and can develop a normal gap switch, while also reducing the switch contact failure rate. The device makes the blade force symmetrical and the swing stable, thereby improving the stability and life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1a It is a schematic diagram of the initial state of the symmetrically arranged blade structure switch device of the present invention.

[0016] Figure 1b for Figure 1a Schematic diagram of the structure of the middle section AA.

[0017] Figure 1c for Figure 1a Schematic diagram of the structure of the middle section BB.

[0018] Figure 1d for Figure 1a Schematic diagram of the structure of the middle section CC.

[0019] Figure 2 It is a schematic diagram of the critical state before the driving assembly of the symmetrically arranged blade structure switch device of the present invention rotates.

[0020] Figure 3 It is a schematic diagram of the intermediate state of an embodiment of a symmetrically arranged blade structure switch device of the present invention.

[0021] Figure 4 It is a schematic diagram of another state of an embodiment of a symmetrically arranged blade structure switch device of the present invention.

[0022] Figure 5 It is a schematic diagram of the blade plate assembly of the symmetrically arranged blade plate structure switch device of the present invention.

[0023] Figure 6 It is a schematic diagram of the structural decomposition of the symmetrically arranged blade structure switch device of the present invention.

[0024] Reference numerals: 1 First Tentacle 2 Second Tentacle 3 First contact surface 4 Second contact surface 5 Return spring 6. Pressure spring 7 Reset 8 Cover 9 Drive components 10 Blade assembly 11 Terminal assembly 12 Inlet connection piece 13 First outlet connecting piece assembly 14 Second outlet connecting piece assembly 15 Swing 16 Pulling Block 17 Blade card slot 18 Base 19 Knife plate clamping position 20 Silver contacts Implementation

[0025] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0026] The symmetrically arranged blade structure switch device of the present invention includes a drive assembly 9 and a blade assembly 10, wherein the drive assembly 9 is symmetrically arranged above the blade assembly 10, and the drive assembly 9 includes a rocker arm 15, a pull block 16 and a pressure spring 6, wherein the rocker arm 15 and the pull block 16 are connected by a snap, and the pressure spring 6 is placed between the rocker arm 15 and the pull block 16; the rocker arm 15, the pull block 16 and the pressure spring 6 form an assembly and are assembled on the cover plate 8; the device also includes a reset spring 5, a reset member 7 and a cover plate 8, wherein the reset member 7 is installed on the cover plate 8 through the reset spring 5, and the rocker arm 15, the pull block 16 and the pressure spring 6 are assembled into an assembly and assembled on the cover plate 8, wherein the elastic force of the pressure spring is greater than the pressure of the reset spring, and the elastic force of the pressure spring 6 is greater than the pressure of the reset spring 5.

[0027] As a preferred embodiment of the present invention, the reset member includes a first feeler 1, a second feeler 2, a first contact surface 3 and a second contact surface 4, the first feeler 1 and the second feeler 2 are respectively two corners of an eight-shaped shape on the reset member, the first contact surface 3 and the second contact surface 4 are two curved surfaces above the rocker arm symmetrically arranged with the rotation center as the symmetry axis, and in the initial state of the switch, the first feeler 1 and the second feeler 2 are located directly above the first contact surface 3 and the second contact surface 4.

[0028] As a preferred embodiment of the present invention, under the action of the operating force, the first feeler 1 contacts the first contact surface 3, and the first feeler 1 slides on the first contact surface 3 in a direction away from the center until it abuts against the rounded corner at the tail end of the first contact surface 3; the operating force continues to act, and the rocker arm 15 starts to rotate until it reaches another state position of the switch device, thereby changing the on-off state of the switch; if the operating force is removed, the reset member 7 returns to the initial state under the action of the reset spring 5.

[0029] As a preferred embodiment of the present invention, one end of the reset spring 5 is installed in the spring seat in the hollow part of the reset member 7, and the other end is installed in the spring seat in the center of the cover plate.

[0030] As a preferred embodiment of the present invention, two symmetrical blade plate retaining grooves 17 are provided on the pull block 16 , and the two symmetrical blade plate retaining grooves 17 press and drive the blade plate assembly 10 .

[0031] As a preferred embodiment of the present invention, the pressure spring 6 is arranged directly above the center of the knife plate assembly 10 , and drives the knife plate assembly 10 through the pull block 16 .

[0032] As a preferred embodiment of the present invention, the device further comprises a blade plate slot pressing position 19 , and the blade plate slot pressing positions 19 are symmetrically arranged on both sides of the blade plate assembly 10 .

[0033] As a preferred embodiment of the present invention, a rounded corner is provided on the surface of the blade clamping slot pressing position 19 .

[0034] As a preferred embodiment of the present invention, the device also includes a terminal assembly 11, an incoming line connecting piece 12, a first outgoing line connecting piece assembly 13 and a second outgoing line connecting piece assembly 14, the terminal assembly 11 includes an incoming line terminal, a first outgoing line terminal and a second outgoing line terminal, the incoming line connecting piece is inserted into the incoming line terminal, and the first outgoing line connecting piece assembly and the second outgoing line connecting piece assembly are respectively inserted into the first outgoing line terminal and the second outgoing line terminal.

[0035] In a specific embodiment of the present invention, a symmetrically arranged "knife plate" structure switch is disclosed, including a switch operating member, a reset member 7, a reset spring 5, a cover plate 8, a drive assembly 9, a knife plate assembly 10, a terminal assembly 11, an incoming connecting piece 12, an outgoing connecting piece assembly and a base.

[0036] The driving assembly 9 is an assembly, including a rocker arm 15, a pull block 16 and a pressure spring 6. The driving assembly 9 is symmetrically arranged above the knife plate assembly 10, and two symmetrical knife plate clamping grooves 17 are provided on the pull block 16. The pressure spring 6 is arranged directly above the center of the knife plate assembly 10 and only presses the pull block 16, and does not directly press the knife plate to drive the knife plate assembly 10 through the pull block 16; knife plate clamping positions 19 are symmetrically provided on both sides of the knife plate assembly 10.

[0037] The switch driving assembly, the rocker arm 15 and the pull block 16 are connected by snap-fit, and the pressure spring 6 is placed between the two. The three can be assembled into an assembly first and then assembled on the cover plate 8.

[0038] The elastic force of the pressure spring 6 of the switch is much greater than the pressure of the return spring 5.

[0039] The switch blade card slot pressing position 19 must have a smooth surface without burrs.

[0040] The surface of the switch blade card slot pressing position 19 needs to be rounded first.

[0041] The first feeler 1 and the second feeler 2 are two corners of the "eight" shape of the reset member 7, and are located directly above the first contact surface 3 and the second contact surface 4 of the swing rod in the initial state of the switch. The first contact surface 3 and the second contact surface 4 are two curved surfaces above the swing rod that are symmetrically arranged with the rotation center as the symmetry axis. One end of the reset spring 5 is installed in the spring seat of the hollow part of the reset member 7, and the other end is installed in the spring seat at the center of the cover plate 8 that is an integral structure with the cover plate, that is, Figure 1bThe structure at both ends of the middle reset spring 5. The swing rod 15 is inserted into the pull block 16, connected by a buckle, with a built-in pressure spring 6, the spring presses the pull block, and the pull block 16 presses the knife plate assembly 10 again.

[0042] The incoming connection piece 12 is inserted into the incoming terminal, and the first outgoing connection piece assembly 13 and the second outgoing connection piece assembly 14 are respectively inserted into the first outgoing terminal and the second outgoing terminal. The three terminals described here are collectively referred to as terminal assemblies 11 in this case.

[0043] As shown in FIG1 , the switch is in the initial state, and the switch operating part is not shown in the figure, but is replaced by the operating force P in the figure. Under the action of the operating force P, the first feeler 1 first contacts the first contact surface 3. Since the force of the reset spring 5 is much smaller than the elastic force of the pressure spring 6, the first feeler 1 then slides away from the center on the first contact surface 3 until it contacts the rounded corner at the tail end of the first contact surface 3. Figure 2 shown.

[0044] The operating force P continues to act, and the rocker 15 assembly begins to rotate. Figure 3 The operating force P continues to act, and the rocker assembly 15 continues to rotate until the Figure 4 The switch is shown in another state position, thereby achieving the on / off state change of the switch.

[0045] Then, the operating force P is removed, and the reset member 7 returns to the initial state under the action of the reset spring 5. Here, the reset plane increases the reset torque when approaching the end position, making the reset member 7 reset more reliably. Because it is easy to understand, Figures 2~4 The compression process of the return spring 5 is not expressed.

[0046] Thereafter, under the action of the operating force P again, the above process will be repeated, except that the second feeler 2 contacts the second contact surface 4 first, and the process is the same.

[0047] Technical measure 1: The switch pressure spring 6 is changed from the original offset setting to the current central setting, which reduces the width of the functional part. At the same time, the pressure spring 6 is set just above the center of the blade but does not directly press the blade, but presses and drives the blade assembly 10 through the blade card slot 17 of the pull block 16, as shown in the section BB of Figure 1. This design can reduce the width of the functional part, avoid the obstruction of the pressure spring 6 to the swing of the blade assembly 10, and reduce the switch contact failure rate.

[0048] Technical measure 2: Change the technical solution in the prior art that relies on a compression spring to compress and drive the blade assembly 10 and a single blade slot 17 for auxiliary driving to two symmetrical blade slots 17 to compress and drive the blade assembly 10, so that the force on the blade is symmetrical and the swing is stable, thereby improving the stability and life of the product.

[0049] Technical measure three: In order to realize technical measures one and two, the blade drive function is designed according to the components, including the rocker arm 15, the pull rod, and the pressure spring 6.

[0050] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.

[0051] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0052] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0054] The symmetrically arranged blade structure switch device of the present invention reduces the width of the functional parts, while avoiding the obstruction of the pressure spring 6 to the swing of the blade assembly 10, and can develop a normal gap switch, while also reducing the switch contact failure rate. The device makes the blade force symmetrical and the swing stable, thereby improving the stability and life of the product.

[0055] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A symmetrically arranged blade structure switch device, characterized in that: The device includes a driving assembly and a blade assembly, wherein the driving assembly is symmetrically arranged above the blade assembly, wherein the driving assembly includes a rocker arm, a pull block and a pressure spring, wherein the rocker arm and the pull block are connected by a snap, wherein the pressure spring is placed between the rocker arm and the pull block, wherein the rocker arm, the pull block and the pressure spring form an assembly and are assembled on the cover plate; the device also includes a reset spring, a reset piece and a cover plate, wherein the reset piece is mounted on the cover plate via a reset spring, wherein the rocker arm, the pull block and the pressure spring are assembled into an assembly and are assembled on the cover plate, wherein the elastic force of the pressure spring is greater than the pressure of the reset spring.

2. The symmetrically arranged blade structure switch device according to claim 1 is characterized in that: The reset member includes a first feeler, a second feeler, a first contact surface and a second contact surface. The first feeler and the second feeler are respectively two corners of an eight-shaped shape on the reset member. The first contact surface and the second contact surface are two curved surfaces above the rocker rod that are symmetrically arranged with the rotation center as the symmetry axis. In the initial state of the switch, the first feeler and the second feeler are located directly above the first contact surface and the second contact surface.

3. The symmetrically arranged blade structure switch device according to claim 2, characterized in that: Under the action of the operating force, the first feeler contacts the first contact surface, and the first feeler slides on the first contact surface in a direction away from the center until it abuts against the rounded corner at the tail end of the first contact surface; the operating force continues to act, and the rocker begins to rotate until it reaches another state position of the switch device, thereby changing the on-off state of the switch; if the operating force is removed, the reset member returns to the initial state under the action of the reset spring.

4. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: One end of the return spring is installed in the spring seat of the hollow part of the return piece, and the other end is installed in the spring seat at the center of the cover plate.

5. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: The pull block is provided with two symmetrical knife plate clamping grooves, and the two symmetrical knife plate clamping grooves press and drive the knife plate assembly.

6. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: The pressure spring is arranged just above the center of the knife plate assembly and drives the knife plate assembly through the pull block.

7. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: The device also includes a knife plate clamping groove pressing position, and the knife plate clamping groove pressing positions are symmetrically arranged on both sides of the knife plate assembly.

8. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: A rounded corner is arranged on the surface of the pressing position of the knife plate clamping groove.

9. The symmetrically arranged blade structure switch device according to claim 1, characterized in that: The device also includes a terminal assembly, an incoming line connecting piece, a first outgoing line connecting piece assembly and a second outgoing line connecting piece assembly. The terminal assembly includes an incoming line terminal, a first outgoing line terminal and a second outgoing line terminal. The incoming line connecting piece is inserted into the incoming line terminal, and the first outgoing line connecting piece assembly and the second outgoing line connecting piece assembly are respectively inserted into the first outgoing line terminal and the second outgoing line terminal.

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