Waterproof sealing knob switch

Abstract

The waterproof sealing knob switch comprises a base and a sealing plate arranged above the base and used for sealing the base, the upper surface of the base extends downwards to be provided with a cylindrical hollow cavity, a gasket is embedded in the inner bottom surface of the cavity, a contact ring is embedded in the center of the upper surface of the gasket, and the contact ring is connected with the base. A plurality of switch contact pieces are uniformly arranged at the outer edge of the contact ring along the circumferential direction; according to the technical scheme, the switch contact pieces are evenly distributed in the base in the circumferential direction, when a worker designs a specific knob switch, different numbers of switch contact pieces can be adjusted according to the requirements of the worker so that products of various models can be conveniently produced for users to select, the base and the switch contact pieces are integrally connected through the injection molding technology, and the production efficiency is improved. The sealing performance when the switch contact piece penetrates through the base is effectively improved, and the service life of the knob is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of knob switches, in particular to a waterproof sealed knob switch. Background Art

[0002] A rotary switch is a switch that uses a rotating handle to control the on and off of the main contacts. By adjusting the contact points, different functions can be turned on and off. During the current use of rotary switches, customers need to use rotary switches with different numbers of contacts according to their own needs, and some switches need to be exposed to harsh environments for long periods of time. How to increase the effective gears of the rotary switch so that customers can freely choose and how to effectively extend the service life of the switch in harsh environments are important work directions in the current switch research and development field. In view of the problems exposed during the use of the current rotary switches, it is necessary to improve and optimize the structure of the rotary switches. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a waterproof sealed knob switch, which has the characteristics of effectively improving the effective gear position to facilitate user use and effectively improving the service life of the switch.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a waterproof sealed rotary knob switch, comprising a base and a sealing plate sealing the base, wherein the upper surface of the base extends downward to form a cylindrical hollow cavity, a gasket is embedded in the inner bottom surface of the cavity, a contact ring is embedded in the center of the upper surface of the gasket, and a plurality of switch contacts are evenly arranged along the circumferential direction at the outer edge of the contact ring, and connecting contacts are integrally formed and extended outward at both ends of the contact ring, and the connecting contacts and the switch contacts extend toward the outer wall of the base, penetrate through, and bend to form contacts for connecting electricity;

[0005] A horizontally rotatable rotating piece is provided above the touch ring and the switch contact piece, and a brush piece is provided on the bottom surface of the rotating piece through a bolt, and a tongue piece is integrally formed at one end of the brush piece. There are two tongue pieces, and the two tongue pieces are in contact with the touch ring and the switch contact piece respectively to complete the circuit connection. The top of the rotating piece is connected to the knob body, and the rotation of the knob body drives the rotating piece to rotate, thereby making the tongue piece contact or separate from the switch contact piece.

[0006] As an optimal technical solution for a waterproof sealed knob switch of the utility model, a locking plate is horizontally arranged on the upper surface of the sealing plate, and the two ends of the locking plate extend and bend downward to wrap the sides of the base and the sealing plate. Both ends of the locking plate extend and are integrally formed with locking tongues, which extend to the bottom surface of the base and buckle and lock the sealing plate and the base. A sealing rubber layer is also laid on the contact surface between the sealing plate and the base to maintain a seal between the base and the sealing plate.

[0007] As an optimal technical solution for a waterproof sealed knob switch of the utility model, the top of the knob body passes through the upper surface of the sealing plate and the locking plate, the bottom surface of the sealing plate is evenly arranged with a number of pressing blocks along the circumferential direction, and the upper surface of the rotating piece is evenly arranged with a number of grooves along the circumferential direction. The grooves can cooperate with the pressing blocks so that the knob body has a sense of frustration in the process of driving the rotating piece to rotate. The cooperation between the grooves and the pressing blocks can make the contact or separation rotation distance of the tongue piece and the switch contact piece more uniform each time.

[0008] As a preferred technical solution of a waterproof sealed knob switch of the present invention, the rotating piece is a disc component, and a waterproof rubber ring can be further provided in the contact area between the upper surface of the rotating piece and the knob body.

[0009] As an optimal technical solution for a waterproof sealed knob switch of the utility model, the brush and tongue are conductive metal sheet components, and the end of the tongue away from the brush is bent downward to form a U-shaped component, which facilitates the knob body to drive the rotating piece to rotate clockwise or counterclockwise.

[0010] As a preferred technical solution of a waterproof sealed knob switch of the utility model, the gasket is a circular porous rubber component, and the bottom surface of the gasket is also coated with a desiccant, which can be calcium chloride, for keeping the inside of the knob switch dry.

[0011] As a preferred technical solution for a waterproof sealed knob switch of the present invention, the number of the switch contacts can be twelve, and several of the switch contacts can be arranged through two side surfaces or four side surfaces of the base.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The switch contacts in this technical solution are evenly arranged along the circumferential direction inside the base. When designing a specific knob switch, the staff can adjust the number of switch contacts according to their own needs, so as to produce various models of products for users to choose from. The base and the switch contacts are integrally connected through the injection molding process, which effectively improves the sealing of the switch contacts when they pass through the base and effectively increases the service life of the knob.

[0014] 2. In this technical solution, a gasket is added inside the base. The gasket effectively disconnects the circuit during the gear switching process, and a desiccant is also applied to the bottom of the gasket to prevent the gaps between the knob parts from widening when the external temperature changes drastically, causing moisture to enter the switch and cause switch abnormalities. This effectively keeps the inside of the knob switch dry and effectively improves the service life of the knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the switch in the present utility model;

[0018] Figure 3 For this utility model Figure 2 Another perspective structural diagram;

[0019] Figure 4 This is a schematic diagram of the switch base structure in the utility model;

[0020] Figure 5 This is a schematic diagram of the switch contact layout structure in the present utility model;

[0021] In the figure: 1. Base; 2. Sealing plate; 3. Locking plate; 4. Knob body; 5. Locking tongue; 6. Switch contact; 7. Rotating plate; 8. Pressing block; 9. Brush; 10. Tongue; 11. Contact ring; 12. Gasket. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example

[0024] like Figure 1-5As shown, the utility model discloses a waterproof sealed knob switch, including a base 1 and a sealing plate 2 that seals the base 1 above the base 1. The upper surface of the base 1 extends downward to form a cylindrical hollow cavity, and a gasket 12 is embedded in the inner bottom surface of the cavity. A touch ring 11 is embedded in the center of the upper surface of the gasket 12. A plurality of switch contacts 6 are evenly arranged along the circumferential direction at the outer edge of the touch ring 11. Both ends of the touch ring 11 extend outward to form an integrally formed connecting contact. The connecting contact and the switch contact 6 extend together toward the outer wall of the base 1 and pass through and bend to form contacts for connecting electricity. The base 1 disclosed in the present technical solution is a regular tetrahedron component, but the structure of the base 1 is not limited to a regular tetrahedron component, and can be a prismatic component or a cylindrical component.

[0025] A horizontally rotatable rotating piece 7 is provided above the contact ring 11 and the switch contact piece 6. A brush piece 9 is provided on the bottom surface of the rotating piece 7 through a bolt. A tongue piece 10 is integrally formed at one end of the brush piece 9. There are two tongue pieces 10, and the two tongue pieces 10 are in contact with the contact ring 11 and the switch contact piece 6 respectively to complete the circuit connection. The top of the rotating piece 7 is connected to the knob body 4. When the knob body 4 rotates, the rotating piece 7 is driven to rotate, thereby making the tongue piece 10 contact or separate from the switch contact piece 6.

[0026] Specifically, a locking plate 3 is horizontally provided on the upper surface of the sealing plate 2. Both ends of the locking plate 3 extend and bend downward to wrap the sides of the base 1 and the sealing plate 2. Both ends of the locking plate 3 extend and are integrally formed with locking tongues 5. The locking tongues 5 extend to the bottom surface of the base 1 and buckle and lock the sealing plate 2 and the base 1. A sealing rubber layer is also provided on the contact surface between the sealing plate 2 and the base 1 to maintain a seal between the base 1 and the sealing plate 2. In this embodiment, the sealing rubber layer is squeezed when subjected to force, so that there is no gap between the base 1 and the sealing plate 2, effectively preventing water from entering the interior of the switch through the gap here.

[0027] Specifically, the top of the knob body 4 passes through the upper surface of the sealing plate 2 and the locking plate 3, and the bottom surface of the sealing plate 2 is evenly arranged with several pressing blocks 8 along the circumferential direction. The upper surface of the rotating piece 7 is evenly arranged with several grooves along the circumferential direction. The grooves can cooperate with the pressing blocks 8 to make the knob body 4 have a sense of frustration in the process of driving the rotating piece 7 to rotate. The cooperation between the grooves and the pressing blocks 8 can make the contact or separation rotation distance of the tongue 10 and the switch contact piece 6 more uniform each time. In this embodiment, the rotating piece 7 can be a hollow rubber sheet component, and a desiccant is set inside the rubber sheet. The desiccant can be a chemical agent such as calcium chloride, and it only needs to achieve a water absorption effect.

[0028] Specifically, the rotating piece 7 is a disc component, and a waterproof rubber ring can be provided in the contact area between the upper surface of the rotating piece 7 and the knob body 4. In this embodiment, the waterproof rubber ring is used to further improve the sealing performance of the structure.

[0029] Specifically, the brush 9 and the tongue 10 are conductive metal sheet components. The end of the tongue 10 away from the brush 9 is bent downward to form a U-shaped component, which makes it convenient for the knob body 4 to drive the rotating piece 7 to rotate clockwise or counterclockwise. In this embodiment, by adjusting the structure of the tongue 10, the user can use the knob switch freely.

[0030] Specifically, the gasket 12 is a circular porous rubber component, and the bottom surface of the gasket 12 is also coated with a desiccant. The desiccant can be calcium chloride, which is used to keep the inside of the knob switch dry. In this embodiment, the desiccant is not limited to calcium chloride, and the staff can set different desiccants according to actual needs.

[0031] Specifically, the number of switch contacts 6 can be twelve, and several switch contacts 6 can be arranged through two side surfaces or four side surfaces of the base 1. In this embodiment, the staff can set different numbers of switch contacts 6 according to the actual needs of the customer.

[0032] The working principle and usage process of the utility model: The knob switch in the technical solution of the utility model seals the base 1 through the sealing plate 2. A rubber layer is laid on the contact surface between the sealing plate 2 and the base 1. When the locking plate 3 wraps the base 1 and the sealing plate 2, the locking tongue 5 at the end of the locking plate 3 buckles and presses the base 1, so that the contact surface between the base 1 and the sealing plate 2 is squeezed, and in this process, a tight seal is maintained between the base 1 and the sealing plate 2;

[0033] The bottom end of the knob body 4 passes through the upper surface of the sealing plate 2 and the locking plate 3. During the rotation of the knob body 4, the rotating piece 7 is driven to rotate together, so that the brush piece 9 and the tongue piece 10 on the bottom surface of the rotating piece 7 rotate synchronously, so that the tongue piece 10 contacts the touch ring 11 and the switch contact piece 6. At this time, the switch contact piece 6 and the touch ring 11 can be kept in communication through the brush piece 9 and the tongue piece 10. During the rotation of the rotating piece 7, the lower pressing block 8 cooperates with the groove on the upper surface of the rotating piece 7, so that the knob body 4 and the rotating piece 7 have a sense of frustration during the rotation process, and the user can perceive the change of the knob switch gear based on the frustration.

[0034] A gasket 12 is also provided on the bottom surface of the switch contact piece 6 and the contact ring 11. The rubber structure of the gasket 12 can effectively disconnect the circuit of the tongue piece 10 during the gear switching process. The bottom surface of the gasket 12 is also coated with a desiccant. The desiccant can be calcium chloride to keep the inside of the knob switch dry.

[0035] A waterproof rubber ring may be provided on the contact area between the upper surface of the rotating piece 7 and the knob body 4 to further enhance the waterproof effect of the bottom end of the knob body 4 and effectively prevent water from reaching the interior of the base 1 through the gap area.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to be a further limitation of the present invention. All equivalent changes made using the contents of the present invention specification and drawings are within the scope of protection of the present invention.

Claims

1. A waterproof sealed knob switch, comprising a base (1) and a sealing plate (2) above the base (1) for sealing the base, characterized in that: The upper surface of the base (1) extends downward to form a cylindrical hollow cavity, the inner bottom surface of the cavity is embedded with a gasket (12), the center of the upper surface of the gasket (12) is embedded with a contact ring (11), and a plurality of switch contacts (6) are evenly arranged along the circumferential direction at the outer edge of the contact ring (11), and connecting contacts are integrally formed at both ends of the contact ring (11), and the connecting contacts and the switch contacts (6) extend toward the outer wall of the base (1) and pass through and bend to form contacts for connecting electricity; A horizontally rotatable rotating piece (7) is provided above the contact ring (11) and the switch contact piece (6); a brush piece (9) is provided on the bottom surface of the rotating piece (7) via a bolt; a tongue piece (10) is provided integrally at one end of the brush piece (9); there are two tongue pieces (10); the two tongue pieces (10) are in contact with the contact ring (11) and the switch contact piece (6) respectively, completing the connection of the circuit; the top end of the rotating piece (7) is connected to a knob body (4); the knob body (4) drives the rotating piece (7) to rotate during rotation, thereby causing the tongue piece (10) to contact or separate from the switch contact piece (6).

2. The waterproof sealed knob switch according to claim 1, characterized in that: A locking plate (3) is horizontally provided on the upper surface of the sealing plate (2), and the two ends of the locking plate (3) extend and bend downward to wrap the sides of the base (1) and the sealing plate (2). Both ends of the locking plate (3) extend and are integrally formed with locking tongues (5), and the locking tongues (5) extend to the bottom surface of the base (1) and buckle and lock the sealing plate (2) and the base (1). A sealing rubber layer is also laid on the contact surface between the sealing plate (2) and the base (1) to maintain a seal between the base (1) and the sealing plate (2).

3. The waterproof sealed knob switch according to claim 2, characterized in that: The top end of the knob body (4) passes through the upper surface of the sealing plate (2) and the locking plate (3); the bottom surface of the sealing plate (2) is provided with a plurality of lower pressing blocks (8) evenly arranged along the circumferential direction; the upper surface of the rotating piece (7) is provided with a plurality of grooves evenly arranged along the circumferential direction; the grooves can cooperate with the lower pressing blocks (8) so that the knob body (4) has a sense of frustration in the process of driving the rotating piece (7) to rotate; the cooperation between the grooves and the lower pressing blocks (8) can make the contact or separation rotation distance of the tongue piece (10) and the switch contact piece (6) more uniform each time.

4. The waterproof sealed knob switch according to claim 1, characterized in that: The rotating piece (7) is a disc component, and a waterproof rubber ring can be sleeved on the contact area between the upper surface of the rotating piece (7) and the knob body (4).

5. The waterproof sealed knob switch according to claim 1, characterized in that: The brush piece (9) and the tongue piece (10) are conductive metal sheet components. The end of the tongue piece (10) away from the brush piece (9) is bent downward to form a U-shaped component, so that the knob body (4) can drive the rotating piece (7) to rotate clockwise or counterclockwise.

6. The waterproof sealed knob switch according to claim 1, characterized in that: The gasket (12) is a circular porous rubber component. The bottom surface of the gasket (12) is also coated with a desiccant, which can be calcium chloride, for keeping the interior of the knob switch dry.

7. The waterproof sealed knob switch according to claim 1, characterized in that: The number of the switch contact pieces (6) may be twelve, and a plurality of the switch contact pieces (6) may be arranged through two side surfaces or four side surfaces of the base (1).

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