Toggle switch sealing structure

Abstract

The utility model relates to a toggle switch sealing structure, and belongs to the technical field of electrical switches. The vertical axis of the shaft sleeve is used as a reference state, the lower end of the shaft sleeve is fixedly connected with the shell, the button handle is inserted into the shaft sleeve, the middle of the button handle is rotationally connected with the shaft sleeve through the fixed rotating shaft, and the axis of the fixed rotating shaft is arranged in the radial direction of the shaft sleeve; the two ends of the fixed rotating shaft are correspondingly and fixedly connected with the two side walls of the shaft sleeve respectively, the knob handle is provided with a rotating shaft matching hole matched with the fixed rotating shaft, the lower end of the knob handle is used for being in transmission connection with a switch body, and a potting silicone sealant layer is arranged at the position, where the fixed rotating shaft is located, of the inner area of the shaft sleeve. And the potting silicone sealant layer completely seals an annular interval area between the inner peripheral surface of the shaft sleeve and the outer peripheral surface of the knob handle at the position of the potting silicone sealant layer. The corresponding implementation process is simple, the requirement for the machining precision of parts is low, and the requirement for operation of assembly personnel is low.

Description

Technical Field

[0001] The utility model relates to a toggle switch sealing structure, belonging to the technical field of electrical switches. Background Art

[0002] The toggle switch belongs to the category of electronic components. This type of switch has the characteristics of reliable contact, easy installation, strong conductivity and insulation resistance, etc. Therefore, this type of switch is often used in AC or DC lines of electronic and electrical equipment. The typical structure of the toggle switch can be found in the patent document with the announcement number CN203055757U, which discloses a seesaw toggle switch, including a base, an actuator and a switching mechanism arranged in the base; the actuator is composed of a sleeve fixed on the base, a shift block arranged in the base through a second pin, a first spring and a connecting sleeve arranged in the upper end hole of the shift block, a second spring and a sliding dial head arranged in the lower end hole of the shift block, and a handle arranged in the sleeve through a first pin and floatingly connected to the connecting sleeve. The switching mechanism is composed of two terminals fixed in the base, a moving contact piece arranged in the base through a support member to tighten the sliding dial head, and the switch switching is realized by rotating the handle. However, the switch sealing structure is not considered in this scheme.

[0003] In actual application, in order to ensure that the switch can be used normally in outdoor environments such as mountains and oceans, the switch is usually required to have sealing performance. The conventional design idea of ​​the existing toggle switch internal seal is to use a sealing ring to squeeze the seal between the button handle and the shaft sleeve. This sealing process has the following disadvantages: high processing precision of parts, complex size and structure of parts, and high requirements on the proficiency of operators. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a toggle switch sealing structure which is convenient to process and assemble.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a button switch sealing structure, including an outer shell, a sleeve, a fixed shaft and a button handle, with the vertical setting of the axis of the sleeve as a reference state, the lower end of the sleeve is fixedly connected to the outer shell, the button handle is inserted in the sleeve, the middle part of the button handle is rotatably connected with the sleeve through the fixed shaft, the axis of the fixed shaft is arranged along the radial direction of the sleeve, the two ends of the fixed shaft are respectively fixedly connected to the two side walls of the sleeve, the button handle has a shaft matching hole adapted to the fixed shaft, the lower end of the button handle is used for transmission connection with the switch body, and the inner area of ​​the sleeve is provided with a potting silicone sealant layer at the position of the fixed shaft, and the potting silicone sealant layer completely seals the annular spacing area between the inner circumference of the sleeve and the outer circumference of the button handle at its position.

[0006] A further preferred solution is: the lower surface of the potting silicone sealant layer is set horizontally, and the lower surface position is lower than the bottom edge of the shaft matching hole; the upper surface of the potting silicone sealant layer is set horizontally, and the upper surface position is higher than the top edge of the shaft matching hole.

[0007] A further preferred solution is that the outer peripheral surface of the button handle has a knurled surface that engages with the potting silicone sealant layer.

[0008] A further preferred solution is that the inner peripheral surface of the shaft sleeve has an annular groove engaged with the potting silicone sealant layer.

[0009] A further preferred solution is that when the potting silicone sealant layer is in a natural state, the button handle is coaxial with the shaft sleeve.

[0010] A further preferred solution is that the fixed shaft is a rivet, and the end of the fixed shaft is connected and fixed to the side wall of the sleeve by a riveting structure.

[0011] A further preferred solution is that the lower end of the shaft sleeve is fixedly connected to the outer shell by a riveting structure.

[0012] The beneficial effect of the utility model is that during the specific implementation, it is only necessary to provide a sealing plug at the lower end of the sleeve, and the upper end surface of the sealing plug is the bottom surface of the cavity during potting. After the silicone sealant material is poured into the sleeve, the upper surface of the potting silicone sealant layer can be formed under the self-leveling effect of the material. After the silicone sealant material is cured, the potting silicone sealant layer described in the utility model is formed. The potting silicone sealant layer can fully ensure the sealing performance due to its own material properties, and at the same time, relying on its own elastic deformation ability, it does not affect the normal rotation and swing of the button handle. It has been verified in practice that there will be no cracking or damage between the button handle and the potting silicone sealant layer. The implementation process of the sealing structure is simple, the requirements for the processing accuracy of the parts are low, and the operation requirements for the assembler are also low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a half-section schematic diagram of the overall structure of the utility model.

[0014] Figure 2 for Figure 1 Side view of.

[0015] Figure 3 for Figure 2 A partial enlarged view of the area where the fixed shaft is located.

[0016] Figure 4 for Figure 1 Bottom view of .

[0017] Figure 5 It is a schematic diagram of the tooling of the utility model when potting silicone sealant material.

[0018] Markings in the figure: button handle 1, fixed shaft 2, shaft sleeve 3, housing 4, potting silicone sealant layer 5, riveting structure 6, sealing plug 7, and pressure riveting structure 8. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 4 As shown, the utility model includes a housing 4, a sleeve 3, a fixed shaft 2 and a knob 1. With the axis of the sleeve 3 arranged vertically as a reference state, the lower end of the sleeve 3 is fixedly connected to the housing 4, the knob 1 is inserted into the sleeve 3, the middle part of the knob 1 is rotatably connected to the sleeve 3 through the fixed shaft 2, the axis of the fixed shaft 2 is arranged along the radial direction of the sleeve 3, the two ends of the fixed shaft 2 are respectively fixedly connected to the two side walls of the sleeve 3, the knob 1 has a shaft matching hole adapted to the fixed shaft 2, the lower end of the knob 1 is used for transmission connection with the switch body, the inner area of ​​the sleeve 3 is provided with a potting silicone sealant layer 5 at the position of the fixed shaft 2, and the potting silicone sealant layer 5 completely seals the annular interval area between the inner circumference of the sleeve 3 and the outer circumference of the knob 1 at the position thereof. The "potting silicone sealant layer 5" refers to the silicone sealant material, which is obtained after curing through the potting process. It is understandable that the potting process itself is a mature existing technology, and the silicone sealant material itself is an existing material. The present utility model does not involve improvements in methods and materials. Figure 5 , it is only necessary to provide a sealing plug 7 at the lower end of the sleeve 3. The upper end surface of the sealing plug 7 is the bottom surface of the cavity during potting, which corresponds to the lower surface position of the potting silicone sealant layer 5. After the silicone sealant material is poured into the sleeve 3, the upper surface of the "potting silicone sealant layer 5" can be formed under the self-leveling effect of the material. After the silicone sealant material is cured, the "potting silicone sealant layer 5" described in the utility model is formed. The potting silicone sealant layer 5 can fully ensure the sealing performance due to its own material properties. At the same time, relying on its own elastic deformation ability, it does not affect the normal rotation and swing of the button handle 1. It has been verified in practice that there will be no cracking or damage between the button handle 1 and the potting silicone sealant layer 5. The implementation process of the sealing structure is simple, the requirements for the processing accuracy of the parts are low, and the operation requirements for the assembler are also low.

[0021] It can be understood that the key technical point of the utility model is the sealing structure between the inner circumference of the sleeve 3 and the outer circumference of the button handle 1. The specific structure of the switch body can be implemented with reference to the existing technology, such as the patent document with announcement number CN203055757U mentioned above.

[0022] To make the sealing structure more reliable, preferably, the lower surface of the potting silicone sealant layer 5 is horizontally set, and the lower surface is lower than the bottom edge of the shaft matching hole; the upper surface of the potting silicone sealant layer 5 is horizontally set, and the upper surface is higher than the top edge of the shaft matching hole, that is, the thickness of the potting silicone sealant layer 5 is greater than the diameter of the shaft matching hole, and the potting silicone sealant layer 5 is centered relative to the fixed shaft 2, and can wrap the two end parts of the fixed shaft 2.

[0023] In order to make the sealing structure more reliable, the outer peripheral surface of the button handle 1 has a knurled surface that is engaged with the potting silicone sealant layer 5. The knurled surface can be in the form of conventional straight lines or mesh patterns.

[0024] In order to make the sealing structure more reliable, the inner circumferential surface of the shaft sleeve 3 has an annular groove engaged with the potting silicone sealant layer 5 .

[0025] To make the sealing structure more reliable, when the potting silicone sealant layer 5 is in a natural state, the button handle 1 is coaxial with the shaft sleeve 3. That is, during the silicone sealant potting process, the button handle 1 and the shaft sleeve 3 always maintain a coaxial state until the silicone sealant is cured.

[0026] For the convenience of assembly, the fixed shaft 2 is a rivet, and the end of the fixed shaft 2 is connected and fixed to the side wall of the sleeve 3 by a riveting structure 8 .

[0027] For easy assembly, the lower end of the sleeve 3 is fixedly connected to the housing 4 by a riveting structure 6. Figure 4 The lower end of the sleeve 3 has a corresponding riveted edge, and the upper end of the shell 4 has a corresponding matching hole. After the riveted edge passes through the matching hole, a fixed connection can be formed through the riveting process.

Claims

1. A toggle switch sealing structure, comprising a housing (4), a sleeve (3), a fixed rotating shaft (2) and a button handle (1), wherein the axis of the sleeve (3) is arranged vertically as a reference state, the lower end of the sleeve (3) is fixedly connected to the housing (4), the button handle (1) is inserted into the sleeve (3), the middle part of the button handle (1) is rotatably connected to the sleeve (3) through the fixed rotating shaft (2), the axis of the fixed rotating shaft (2) is arranged along the radial direction of the sleeve (3), the two ends of the fixed rotating shaft (2) are respectively fixedly connected to the two side walls of the sleeve (3), the button handle (1) has a rotating shaft matching hole adapted to the fixed rotating shaft (2), and the lower end of the button handle (1) is used for transmission connection with the switch body, characterized in that: An encapsulated silicone sealant layer (5) is provided in the inner region of the shaft sleeve (3) at the location where the fixed rotating shaft (2) is located, and the encapsulated silicone sealant layer (5) completely seals the annular spacing region between the inner circumference of the shaft sleeve (3) and the outer circumference of the button handle (1) at the location where the encapsulated silicone sealant layer (5) is located.

2. The toggle switch sealing structure according to claim 1, characterized in that: The lower surface of the potting silicone sealant layer (5) is arranged horizontally, and the lower surface position is lower than the bottom edge of the shaft matching hole; the upper surface of the potting silicone sealant layer (5) is arranged horizontally, and the upper surface position is higher than the top edge of the shaft matching hole.

3. The toggle switch sealing structure according to claim 1, characterized in that: The outer peripheral surface of the button handle (1) has a knurled surface which is engaged with the potting silicone sealant layer (5).

4. The toggle switch sealing structure according to claim 1, characterized in that: The inner peripheral surface of the shaft sleeve (3) is provided with an annular groove engaged with the potting silicone sealant layer (5).

5. The toggle switch sealing structure according to claim 1, characterized in that: When the potting silicone sealant layer (5) is in a natural state, the button handle (1) and the shaft sleeve (3) are coaxial.

6. The toggle switch sealing structure according to claim 1, characterized in that: The fixed rotating shaft (2) is a rivet, and the end of the fixed rotating shaft (2) is connected and fixed to the side wall of the shaft sleeve (3) via a riveting structure (8).

7. The toggle switch sealing structure according to any one of claims 1 to 6, characterized in that: The lower end of the shaft sleeve (3) is fixedly connected to the outer shell (4) via a riveting structure (6).

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