A knob replaceable onboard switch

Abstract

The utility model discloses a kind of plate-mounted switches with replaceable knobs, relating to plate-mounted switch field, including switch assembly and base, the switch assembly is fixed with base by screw, the base is connected with knob assembly, the inside of switch assembly is opened with arc guide gap, the inside of switch assembly is also fixed with arc guide plate left and right symmetrical, the side of arc guide plate is provided with the arc jet opening opened on switch assembly.The plate-mounted switch with replaceable knobs, arc guide gap, arc guide plate and arc jet opening designed in the inside of switch assembly form complete arc guiding system, can direct export the arc generated in on-off process, cooperate with the shielding and guiding effect of baffle, can avoid arc direct burning of switch internal parts, prolong service life, can weaken arc intensity and control arc jet direction, prevent arc splashing from causing peripheral component damage or safety accident, greatly improve use safety.

Description

Technical Field

[0001] This utility model relates to the field of onboard switch technology, specifically to an onboard switch with a replaceable knob. Background Technology

[0002] In the field of electronic equipment control, onboard switches are key components for realizing circuit switching and parameter adjustment. Their structural design directly affects the ease of operation, safety, and applicability of the equipment. However, in actual use, the electric arc generated by the switch during the switching process has a significant impact on the service life and safety of existing onboard switch products. The lack of a dedicated arc-guiding structure in the arc protection design of existing onboard switches leads to random arc splashing, causing burn damage to internal parts. Moreover, the arc direction is uncontrollable, which may ignite surrounding components or pose a safety hazard to operators, affecting the safety of use. Utility Model Content

[0003] The purpose of this invention is to provide a replaceable knob onboard switch to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a replaceable knob onboard switch, comprising a switch assembly and a base, wherein the switch assembly and the base are fixed together by screws, and a knob assembly is connected to the base. An arc-guiding notch is provided on the inner side of the switch assembly, and arc-guiding plates are symmetrically fixed on the left and right sides of the inner side of the switch assembly. An arc-spraying nozzle is provided on the side of the arc-spraying nozzle and an angled baffle fixed on the switch assembly is provided on the outer side of the arc-spraying nozzle for arc guiding. The angle of the baffle is 70°-135°.

[0005] Preferably, the switch assembly is connected to a rotating shaft for switch control, and a pin is installed on the rotating shaft.

[0006] Preferably, the switch assembly is equipped with pins, which are enclosed in the housing of the switch assembly and protrude 0.2mm-0.5mm from the housing. The pins are fixed to the PCB board by fastening bolts. The external pin mounting structure can effectively protect the pins and prevent them from being deformed or damaged due to exposure.

[0007] Preferably, the switch assembly is composed of multiple stacked switch units, and the multiple switch units are fixed to each other by bolts and positioning rods. The positioning rods can be used to position the multiple switch units, thereby avoiding misalignment and ensuring the integrity of the switch assembly.

[0008] Preferably, the base is connected to a connecting shaft via a bearing, and the connecting shaft has a slot. The slot and the pin are engaged. The engagement of the slot and the pin provides a basic guarantee for the rotation control of the device, thereby ensuring the normal use of the device.

[0009] Preferably, the knob assembly includes a first knob, and the first knob is engaged with the connecting shaft. The first knob and the connecting shaft are locked together by screws. The function of the first knob provides a basic guarantee for the normal rotation of the connecting shaft.

[0010] Preferably, the knob assembly includes a second knob, and the second knob is engaged with the connecting shaft. The second knob and the connecting shaft are locked together by screws. The function of the second knob provides a basic guarantee for the normal rotation of the connecting shaft.

[0011] Preferably, the second knob has a first circular hole, and a button is slidably connected to the second knob. A spring is fixed between the button and the second knob, and the button has a second through hole. Through the above structure, a basic guarantee can be provided for locking the second knob, thereby realizing the anti-accidental touch function of the device.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The replaceable onboard switch of this knob has an arc guiding notch, arc guiding plate and arc spray nozzle designed on the inner side of the switch assembly to form a complete arc guiding system. It can directionally guide the arc generated during the switching process. With the shielding and guiding effect of the baffle, it can not only prevent the arc from directly burning the internal parts of the switch and extend the service life, but also weaken the arc intensity and control the arc spray direction to prevent the arc from splashing and causing damage to surrounding components or safety accidents, thus greatly improving the safety of use.

[0014] 2. The replaceable onboard switch of this knob achieves quick replacement and function switching through the snap-fit ​​connection structure between the knob assembly and the connecting shaft. Users can choose the first knob without anti-accidental touch function or the second knob with locking function according to their needs. It can adapt to different operating scenarios without replacing the switch body, which significantly improves the versatility and maintenance convenience of the equipment and reduces replacement costs.

[0015] 3. The replaceable onboard switch of this knob features a shell-encased design with pins protruding 0.2mm-0.5mm. Combined with fastening screws, it achieves double fixation to the PCB board, ensuring the stability of the circuit connection and enhancing the mechanical fixation strength. This effectively avoids poor contact issues and, compared to traditional protruding pins, also prevents pins from being bent or damaged by impacts, better meeting actual usage needs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the switch assembly and base of this utility model in a disassembled state;

[0017] Figure 2 This is a three-dimensional view of the internal structure of the switch assembly of this utility model from below;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the first knob structure in Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the second knob structure in Embodiment 2 of this utility model.

[0021] In the diagram: 1. Switch assembly; 101. Rotating shaft; 102. Pin; 103. Lead; 104. Fastening bolt; 105. Positioning rod; 106. Arc guide notch; 107. Arc guide plate; 108. Arc spray nozzle; 109. Baffle; 2. Base; 201. Connecting shaft; 202. Bayonet; 3. Knob assembly; 301. First knob; 302. Second knob; 3021. First round hole; 3022. Button; 3023. Second through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a replaceable knob onboard switch, including a switch assembly 1 and a base 2, the switch assembly 1 and the base 2 are fixed to each other by screws, and a knob assembly 3 is connected to the base 2.

[0024] The switch assembly 1 is connected to a rotating shaft 101 for switch control, and a pin 102 is installed on the rotating shaft 101; the switch assembly 1 is equipped with a pin 103, which is enclosed by the housing of the switch assembly 1 and protrudes 0.2mm-0.5mm from the housing of the switch assembly 1, and the pin 103 is fixed to the PCB board by fastening bolts 104; the switch assembly 1 is composed of multiple stacked switch units, and the multiple switch units are fixed to each other by bolts and positioning rods 105; the base 2 is connected to a connecting shaft 201 by a bearing, and a bayonet 202 is provided on the connecting shaft 201, and the bayonet 202 and the pin 102 are engaged;

[0025] When using the onboard switch that can be replaced with this knob, such as Figures 1-5 As shown, the base 2 is installed and fixed to the switch assembly 1. At this time, the engagement between the bayonet 202 and the pin 102 enables the connection between the rotating shaft 101 and the connecting shaft 201, allowing the rotating shaft 101 to rotate synchronously with the connecting shaft 201. Then, the pin 103 is connected and fixed to the PCB board by screws passing through it. This not only achieves the installation and locking between the switch assembly 1 and the PCB board, but also allows the pin 103 to contact the circuit on the PCB board, ensuring the normal use of the device.

[0026] The inner side of the switch assembly 1 is provided with an arc guiding notch 106. The inner side of the switch assembly 1 is also symmetrically fixed with arc guiding plates 107. The side of the arc guiding plate 107 is provided with an arc spraying nozzle 108 opened on the switch assembly 1. The outer side of the arc spraying nozzle 108 is provided with an angled baffle 109 fixed on the switch assembly 1 for arc guiding. The angle of the baffle 109 is 70°-135°.

[0027] During the use of the device, such as Figure 1 and Figure 2 As shown, when the rotating knob assembly 3 drives the connecting shaft 201 to rotate, it can simultaneously drive the rotating shaft 101 to rotate, thereby enabling the switch assembly 1 to control the circuit on and off. When the circuit is connected or disconnected, an electric arc may be generated. At this time, the electric arc can move through the arc guide notch 106 to the arc guide plate 107. The arc-shaped structure on the side of the arc guide plate 107 achieves the guiding effect, so that the electric arc is ejected outward through the arc spray nozzle 108, thereby effectively avoiding the electric arc from affecting the parts on the switch assembly 1, and thus effectively extending the service life of the switch assembly 1. Furthermore, the electric arc ejected outward through the arc spray nozzle 108 is shielded and guided by the baffle 109, which can reduce the intensity of the electric arc and avoid the safety hazard caused by direct electric arc spray, ensuring safe use.

[0028] Example 1:

[0029] The knob assembly 3 includes a first knob 301, and the first knob 301 is engaged with the connecting shaft 201, and the first knob 301 and the connecting shaft 201 are locked together by screws;

[0030] During the use of the device, the first knob 301 is fixed to the connecting shaft 201. The first knob 301 can drive the connecting shaft 201 to rotate, thereby ensuring the normal use of the device. This first knob 301 has no anti-accidental touch function.

[0031] Example 2:

[0032] The knob assembly 3 includes a second knob 302, which is engaged with the connecting shaft 201 and locked to the connecting shaft 201 by screws. The second knob 302 has a first circular hole 3021 and a button 3022 is slidably connected to the second knob 302. A spring is fixed between the button 3022 and the second knob 302, and the button 3022 has a second through hole 3023.

[0033] During the use of the device, the second knob 302 is fixed to the connecting shaft 201. The second knob 302 can drive the connecting shaft 201 to rotate, thereby ensuring the normal use of the device. This second knob 302 has an anti-accidental touch function. When it is necessary to lock the second knob 302, simply press the button 3022 and slide the second knob 302 until the first round hole 3021 and the second through hole 3023 are engaged. Then, by using an externally fixed lock or pin to pass through the first round hole 3021 and the second through hole 3023, the locking effect of the second knob 302 can be achieved, thereby achieving the anti-accidental touch effect.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary replaceable board switch, comprising a switch assembly (1) and a base (2), wherein the switch assembly (1) and the base (2) are fixed to each other by screws, and a rotary assembly (3) is connected to the base (2), characterized in that, The inner side of the switch assembly (1) is provided with an arc guide notch (106), and the inner side of the switch assembly (1) is also symmetrically fixed with an arc guide plate (107). The side of the arc guide plate (107) is provided with an arc spraying nozzle (108) opened on the switch assembly (1). The outer side of the arc spraying nozzle (108) is provided with an angled baffle (109) fixed on the switch assembly (1) for arc guiding. The angle of the baffle (109) is 70°-135°.

2. The rotary replaceable board switch according to claim 1, characterized in that: The switch assembly (1) is connected to a rotating shaft (101) for switch control, and a pin (102) is installed on the rotating shaft (101).

3. A rotary replaceable board switch according to claim 1, characterized in that: The switch assembly (1) is equipped with pins (103), and the pins (103) are wrapped by the housing of the switch assembly (1). The pins (103) protrude 0.2mm-0.5mm from the housing of the switch assembly (1). At the same time, the pins (103) are fixed to the PCB board by fastening bolts (104).

4. A rotary replaceable board switch according to claim 1, characterized in that: The switch assembly (1) is composed of multiple switch units stacked together, and the multiple switch units are fixed to each other by bolts and positioning rods (105).

5. A rotary replaceable board switch according to claim 1, characterized in that: The base (2) is connected to a connecting shaft (201) by a bearing, and a bayonet (202) is provided on the connecting shaft (201), and the bayonet (202) and the pin (102) are engaged.

6. A rotary-knob replaceable board switch according to claim 1, characterized in that: The knob assembly (3) includes a first knob (301), and the first knob (301) is engaged with the connecting shaft (201), and the first knob (301) and the connecting shaft (201) are locked by screws.

7. A rotary replaceable board switch according to claim 1, characterized in that: The knob assembly (3) includes a second knob (302), and the second knob (302) is engaged with the connecting shaft (201), and the second knob (302) and the connecting shaft (201) are locked by screws.

8. A rotary replaceable board switch according to claim 7, characterized in that: The second knob (302) has a first round hole (3021) and a button (3022) is slidably connected to the second knob (302). A spring is fixed between the button (3022) and the second knob (302), and a second through hole (3023) is provided on the button (3022).

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