Accurate braking microspur safety switch

Abstract

The utility model relates to the technical field of safety switches, in particular to an accurate braking micro-distance safety switch. Comprising a safety switch body, a reed mechanism is arranged on the safety switch body, a fixing mechanism is arranged on the safety switch body, the safety switch further comprises a safety cover shell, an installation cavity is preset in the safety cover shell, and the safety cover shell is installed on the safety switch body through the installation cavity, so that the use safety of a final product is guaranteed. The precise braking microspur safety switch acts on a key of the safety switch through the lever principle, the key rapidly presses down two contacts to be pressed, conducted and connected, the switch is closed to enable the spin-drying work of a washing machine to be precisely braked immediately, and therefore the safety protection effect is achieved, and on the basis, in order to achieve the waterproof and fire-proof effects, a safety cover shell is additionally designed, and the safety cover shell is convenient to use. The use safety of the final product is ensured, so that the use safety of the device is embodied, and popularization and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of safety switches, in particular to a precision braking macro safety switch. Background Art

[0002] Today's washing machine safety requirements are becoming increasingly stringent. This product is a safety microswitch that primarily controls the precise braking of a washing machine's spin dryer. When the safety cover on the spin dryer is opened to a safe height, a lever acts on the safety switch button, causing it to be quickly pressed down, closing the two contacts and providing a conductive connection. Closing the switch instantly and precisely brakes the washer's spin cycle, providing a safety protection feature.

[0003] Traditional safety switches have poor precision braking effects and low waterproof and fireproof performance. However, since safety switches need to pass high voltage and large current when working, the switch contacts will produce sparks at the moment of contact, which is prone to fire, resulting in low safety during use, which is not conducive to promotion and use.

[0004] Therefore, how to provide a precise braking macro safety switch has become a technical problem to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to provide a precise braking macro safety switch.

[0006] To achieve the above-mentioned objectives, the present invention provides a precision braking macro safety switch, comprising: a safety switch body, on which a reed mechanism is provided, and a fixing mechanism is provided on the safety switch body, and also comprising a safety cover, wherein an installation chamber is preset inside the safety cover, and the safety cover is installed on the safety switch body through the installation chamber to ensure the safety of the final product.

[0007] The safety switch body and the reed mechanism on the safety switch body both adopt existing structures on the market in this field and are common knowledge in this field, so they will not be described in detail. The fixing mechanism is designed to fix the safety switch body in a specified position. A double-layer fixing part is provided in the installation chamber, and a metal dynamic reed and a metal static reed are respectively fixed on the double-layer fixing part.

[0008] The main technical performance indicators of this product are as follows:

[0009] ①. Contact resistance: ≤30mΩ, ≤100mΩ after life test;

[0010] ②Insulation resistance: ≥100MΩ;

[0011] ③. Withstand voltage: AC1500V, 5s, no breakdown and arcing;

[0012] ④ Fire resistance: The insulator supporting the current carrier should be able to withstand the glow wire test at 850℃ for 30s;

[0013] ⑤. Mechanical life: 14400 times of continuous switching under load and no-load respectively;

[0014] ⑥. Temperature rise: After adding rated load for 1 hour, the contact temperature rise value does not exceed 45℃.

[0015] Preferably, the reed mechanism includes a metal moving reed and a metal static reed, which are arranged parallel to each other from top to bottom on the safety switch body, and alloy contacts a and alloy contacts b are correspondingly provided on the metal moving reed and the metal static reed.

[0016] With this design, the metal moving spring and the metal static spring form a double-layer structure, and the alloy contacts a and the alloy contacts b are correspondingly arranged at the ends of the metal moving spring and the metal static spring. This method is common knowledge in this field and will not be described in detail.

[0017] Preferably, the end of the metal movable spring away from the safety switch body is connected to a button.

[0018] This design allows the key to be fixed on the top of the metal static spring sheet and to be pressed down by an external force, so that the alloy contact a and the alloy contact b are pressed and connected.

[0019] Preferably, the fixing mechanism is a fixing base, which is arranged at one end of the safety switch body away from the reed mechanism, and a fixing hole is preset on the fixing base.

[0020] The fixing hole is a bolt hole. When in use, a bolt can be inserted into the fixing hole, thereby ensuring the stability of the connection between the fixed base and the outside world, and then ensuring the stability of the installation of the safety switch body. The design of the bolt makes it easy for the staff to disassemble and assemble the safety switch body later, thereby facilitating the staff to replace and maintain the safety switch body later.

[0021] Preferably, the safety cover forms a snap-fit connection structure with the safety switch body via a connecting mechanism, and the connecting mechanism includes a connecting protrusion and a connecting groove;

[0022] The connecting protrusion is arranged on the top of the safety switch body;

[0023] The connection groove is preset on the outer surface of the safety cover.

[0024] The design of the snap-fit connection structure ensures the stability of the connection between the safety cover and the safety switch body, while making it easy for workers to disassemble and assemble the safety cover and the safety switch body, thereby replacing and maintaining the safety cover through the connection mechanism or the safety switch body, reducing subsequent maintenance costs.

[0025] Preferably, the safety cover is made of high temperature resistant insulating material.

[0026] The high-temperature resistant insulating material used in the safety cover uses ceramic fiber as the main raw material and is made using a wet molding process. It has the properties of high temperature resistance, chemical corrosion resistance, thermal shock resistance, low thermal conductivity, high electrical insulation strength and high elastic modulus.

[0027] The beneficial effects of the utility model are:

[0028] When the utility model is in use, the lever principle acts on the button of the safety switch, so that the button is quickly pressed down and the two contacts are pressed together to connect. The switch is closed, so that the washing machine's spin-drying operation is immediately and accurately braked, thereby playing a safety protection role. On this basis, in order to achieve waterproof and fire-proof effects, a safety cover is designed and installed to ensure the safety of the final product, thereby reflecting the safety of the device when in use, and further facilitating its popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the front side of the safety switch body according to a specific embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the side of the safety switch body in a specific embodiment of the utility model;

[0032] Figure 3 This is a specific embodiment of the utility model Figure 2 A in the figure is an enlarged structural diagram.

[0033] Part Name

[0034] 1. Safety switch body; 2. Metal moving spring; 201. Alloy contact a; 3. Metal static spring; 301. Alloy contact b; 4. Button; 5. Fixed base; 6. Safety cover; 7. Connecting bump; 8. Connecting groove. DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings. Preferably, the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0037] See also Figures 1 to 3 The utility model provides a precision braking macro safety switch, comprising: a safety switch body 1, a reed mechanism provided on the safety switch body 1, and a fixing mechanism provided on the safety switch body 1, and also comprising a safety cover 6, the safety cover 6 has a mounting chamber preset inside, and the safety cover 6 is mounted on the safety switch body 1 through the mounting chamber to ensure the safety of the final product, the reed mechanism comprises a metal dynamic reed 2 and a metal static reed 3, the metal dynamic reed 2 and the metal static reed 3 are arranged parallel to each other from top to bottom on the safety switch body 1, and the metal dynamic reed 2 and the metal static reed ... 3 is provided with alloy contacts a201 and alloy contacts b301 respectively, the metal movable reed 2 is connected to a button 4 at the end away from the safety switch body 1, the fixing mechanism is a fixing base 5, the fixing base 5 is provided at the end of the safety switch body 1 away from the reed mechanism, and the fixing base 5 is preset with a fixing hole, the safety cover 6 forms a snap-fit connection structure with the safety switch body 1 through the connecting mechanism, the connecting mechanism includes a connecting protrusion 7 and a connecting groove 8, the connecting protrusion 7 is provided on the top of the safety switch body 1, and the connecting groove 8 is preset on the outer surface of the safety cover 6, and the safety cover 6 is made of high-temperature resistant insulating material;

[0038] In this embodiment:

[0039] First, insert the connecting protrusion 7 into the connecting groove 8 to install the safety cover 6 on the safety switch body 1;

[0040] Secondly, insert bolts into the fixing holes on the fixing base 5, thereby fixing the safety switch body 1 at the designated position through the fixing base 5;

[0041] Then, when the fixed installation is completed, the metal dynamic spring 2 and the metal static spring 3 are electrically connected. When the connection is completed and normal use is carried out, the lever principle acts on the button 4 of the safety switch, causing the button 4 to quickly press down the two contacts (i.e., alloy contact a201 and alloy contact b301) to press and connect. The switch is closed, causing the washing machine to immediately and accurately brake the drying process, thereby playing a safety protection role. On this basis, in order to achieve waterproof and fire-proof effects, a safety cover 6 is designed and installed to ensure the safety of the final product, thereby reflecting the safety of the device when in use;

[0042] Finally, when in use, the high-temperature resistant insulating material used in the safety cover 6 makes it have the properties of high temperature resistance, chemical corrosion resistance, thermal shock resistance, low thermal conductivity, high electrical insulation strength and high elastic modulus, thereby increasing its service life.

[0043] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A precision braking macro safety switch, comprising: A safety switch body (1) is provided with a reed mechanism and a fixing mechanism, and is characterized in that it further comprises a safety cover (6), wherein an installation chamber is preset inside the safety cover (6), and the safety cover (6) is installed on the safety switch body (1) through the installation chamber to ensure the safety of the final product.

2. The precision braking macro safety switch according to claim 1, characterized in that: The reed mechanism comprises a metal moving reed (2) and a metal static reed (3), the metal moving reed (2) and the metal static reed (3) being arranged in parallel on the safety switch body (1) from top to bottom, and alloy contacts a (201) and alloy contacts b (301) being correspondingly arranged on the metal moving reed (2) and the metal static reed (3).

3. The precision braking macro safety switch according to claim 2, characterized in that: One end of the metal movable spring (2) away from the safety switch body (1) is connected to a button (4).

4. The precision braking macro safety switch according to claim 1, characterized in that: The fixing mechanism is a fixing base (5), which is arranged at one end of the safety switch body (1) away from the reed mechanism, and a fixing hole is preset on the fixing base (5).

5. The precision braking macro safety switch according to claim 1, characterized in that: The safety cover (6) forms a snap-fit connection structure with the safety switch body (1) via a connection mechanism, wherein the connection mechanism includes a connection protrusion (7) and a connection groove (8); The connecting protrusion (7) is arranged on the top of the safety switch body (1); The connecting groove (8) is preset on the outer surface of the safety cover (6).

6. The precision braking macro safety switch according to any one of claims 1 or 5, characterized in that: The safety cover (6) is made of high-temperature resistant insulating material.

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