Sealing assembly and multi-position rotary switch

Abstract

The utility model relates to a switch technical field provides a kind of sealing assembly and multi-gear rotary switch, sealing assembly is used for multi-gear rotary switch, the multi-gear rotary switch includes knob, gear shifting mechanism and shell, the knob is connected with the gear shifting mechanism, the shell includes by upper to lower sequentially arranged upper cover, middle cover and lower cover, the gear shifting mechanism is embedded in the upper cover and the lower cover, and the top of the gear shifting mechanism is connected with the knob, the bottom of the gear shifting mechanism is penetrated the lower cover;The sealing assembly includes: first sealing ring, between the gear shifting mechanism and the upper cover;Second sealing ring, between the upper cover and the middle cover;Third sealing ring, between the middle cover and the lower cover.The sealing assembly and multi-gear rotary switch provided by the utility model can realize multistage sealing, optimize sealing effect, and ensure the normal operation of multi-unit rotary switch.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a sealing component and a multi-position rotary switch. Background Technology

[0002] A multi-position rotary switch is a mechanical switch that switches different circuit connection states by rotating it. Its core function is to realize the on / off state of the circuit, function conversion or signal selection by discretely switching the positions.

[0003] In the existing technology, most multi-position rotary switches are single-layer sealed, which often leaks water during use, causing abnormalities and affecting normal use.

[0004] Therefore, how to provide a multi-position rotary switch with enhanced sealing performance is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a multi-position rotary switch with enhanced sealing performance to address the shortcomings of poor sealing in existing technologies and ensure good sealing performance of the multi-position rotary switch.

[0006] This utility model provides a sealing assembly for a multi-position rotary switch. The multi-position rotary switch includes a knob, a shifting mechanism, and a housing. The knob is connected to the shifting mechanism. The housing includes an upper cover, a middle cover, and a lower cover arranged sequentially from top to bottom. The shifting mechanism is embedded in the upper cover and the lower cover, with its top connected to the knob and its bottom penetrating through the lower cover. The sealing assembly includes: A first sealing ring is disposed between the shifting mechanism and the upper cover; A second sealing ring is disposed between the upper cover and the middle cover; The third sealing ring is disposed between the middle cover and the lower cover.

[0007] According to the sealing assembly provided by this utility model, the multi-position rotary switch further includes a copper sleeve, and the shifting mechanism is rotatably disposed inside the copper sleeve; the first sealing ring is disposed between the shifting mechanism and the copper sleeve.

[0008] According to the sealing assembly provided by this utility model, the first sealing ring, the second sealing ring and the third sealing ring are all nitrile rubber O-rings.

[0009] A multi-position rotary switch, comprising: Knob; The housing includes an upper cover, a middle cover, and a lower cover arranged sequentially from top to bottom; A gear shifting mechanism, the top of which is embedded in the upper cover and connected to the knob; Under the action of the shifting mechanism, the PCBA board outputs different voltages, and the bottom of the shifting mechanism penetrates through the lower cover; The sealing assembly as described in any of the preceding items is used to seal the housing.

[0010] According to the present invention, a multi-position rotary switch is provided, wherein the shifting mechanism includes: A rotating shaft is connected to the knob; A rotating disk is connected to the rotating shaft, and a moving contact is connected to the rotating disk; The gear shift dial is integrally mounted on the middle cover; under the rotation of the rotating shaft, the moving contact corresponds to different gears of the gear shift dial, and the PCBA board outputs different voltages.

[0011] According to the present invention, a multi-position rotary switch is provided with an indicator mark on the knob and a positioning pin is also provided on the side of the upper cover facing the knob. When the indicator mark is aligned with the positioning pin, the multi-position rotary switch corresponds to the first position.

[0012] According to the present invention, a multi-position rotary switch is provided, the upper cover comprising: The cover is circular in shape with a through hole in the center; A connecting cylinder extends from the cover towards the knob, and the connecting cylinder communicates with the through hole; It also includes a copper sleeve disposed inside the connecting cylinder, and the rotating shaft is rotatably disposed inside the copper sleeve.

[0013] According to the present invention, a multi-position rotary switch is provided, wherein the knob has a positioning hole on the side facing the upper cover, and the rotating shaft is detachably inserted into the positioning hole, wherein the outer circumference of the rotating shaft is adapted to the inner circumference of the positioning hole.

[0014] According to the present invention, a multi-position rotary switch is provided, the knob comprising: The cap body is circular, with its bottom positioned near the rotation axis, and the positioning hole is located in the middle of the cap body; The grip is integrally formed on the top of the cap body; the grip is arranged radially along the cap body.

[0015] According to the present invention, a multi-position rotary switch further includes a nut, and the outer circumference of the connecting cylinder is provided with threads. The nut is used to install the multi-position rotary switch on a platform.

[0016] The sealing assembly provided by this utility model is used for a multi-position rotary switch. The multi-position rotary switch includes a knob, a shifting mechanism, and a housing. The knob is connected to the shifting mechanism. The housing includes an upper cover, a middle cover, and a lower cover arranged sequentially from top to bottom. The top of the shifting mechanism passes through the upper cover and is connected to the knob, and the bottom of the shifting mechanism passes through the lower cover. The sealing assembly includes a first sealing ring disposed between the shifting mechanism and the upper cover; a second sealing ring disposed between the upper cover and the middle cover; and a third sealing ring disposed between the middle cover and the lower cover. By setting the first, second, and third sealing rings, multi-level sealing can be achieved, optimizing the sealing effect and ensuring the normal operation of the multi-position rotary switch.

[0017] The multi-position rotary switch provided by this utility model has the various advantages described above because it includes the sealing component as described above. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the multi-position rotary switch provided by this utility model.

[0020] Figure 2 This is a cross-sectional view of the multi-position rotary switch provided by this utility model.

[0021] Figure label: 10. Knob; 11. Cap body; 12. Handle; 20. Gear shifting mechanism; 21. Rotating shaft; 22. Rotating disc; 23. Moving contact; 24. Gear position disc; 30. Housing; 31. Top cover; 311. Cover body; 312. Connecting cylinder; 32. Middle cover; 33. Bottom cover; 40. Copper sleeve; 50. Positioning pin; 60. PCBA board; 70. Nut; 1. First sealing ring; 2. Second sealing ring; 3. Third sealing ring. Detailed Implementation

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

[0023] The following is combined Figures 1-2 This invention describes the sealing assembly and the multi-position rotary switch.

[0024] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a sealing assembly for a multi-position rotary switch. The multi-position rotary switch includes a knob 10, a shifting mechanism 20, and a housing 30. The knob 10 is connected to the shifting mechanism 20. The housing 30 includes an upper cover 31, a middle cover 32, and a lower cover 33 arranged sequentially from top to bottom. The top of the shifting mechanism 20 passes through the upper cover 31 and is connected to the knob 10, and the bottom of the shifting mechanism 20 passes through the lower cover 33.

[0025] The sealing assembly includes a first sealing ring 1, a second sealing ring 2, and a third sealing ring.

[0026] The first sealing ring 1 is disposed between the shifting mechanism 20 and the upper cover 31. The shifting mechanism 20 is a rotating moving part connected to the external knob 10, and the mating point between it and the upper cover 31 is the main intrusion channel for external dust, moisture, and other contaminants. The placement of the first sealing ring 1 here can effectively seal this dynamic mating gap, which constitutes the first key line of defense against the external environment, directly and effectively preventing contaminants from entering from the most vulnerable top of the switch.

[0027] The second sealing ring 2 is disposed between the upper cover 31 and the middle cover 32 to seal the static joint surfaces between the components of the housing 30, forming a second layer of protection. The second sealing ring 2 ensures the sealing integrity of the upper housing structure, and even if liquid splashes onto the switch housing, it can effectively prevent it from seeping in through the assembly gaps between the upper cover 31 and the middle cover 32, further enhancing the overall protective capability.

[0028] The third sealing ring 3 is located between the middle cover 32 and the lower cover 33, and together with the second sealing ring 2, it forms a complete seal at the joint of the entire housing.

[0029] The sealing assembly provided by this utility model, by setting a first sealing ring 1, a second sealing ring 2 and a third sealing ring 3, can achieve multi-level sealing, optimize the sealing effect, and ensure the normal operation of a multi-position rotary switch.

[0030] In some feasible embodiments of this utility model, the multi-position rotary switch also includes a copper sleeve 40, which utilizes the excellent wear resistance and low coefficient of friction of copper material. The shifting mechanism 20 is rotatably disposed inside the copper sleeve 40; the first sealing ring 1 is disposed between the shifting mechanism 20 and the copper sleeve 40. The copper sleeve 40 can provide a more stable, smoother and more precisely sized sealing reference surface, ensuring that the first sealing ring 1 can always maintain an effective compression and tight fit during long-term dynamic rotation, thereby constructing a more reliable and durable dynamic sealing defense.

[0031] In some feasible embodiments of this utility model, the first sealing ring 1, the second sealing ring 2, and the third sealing ring 3 are all nitrile rubber O-rings. Using nitrile rubber as the O-ring material provides excellent oil and chemical resistance, as well as good wear resistance.

[0032] This utility model provides a multi-position rotary switch, including a knob 10, a shifting mechanism 20, a housing 30, a PCBA board 60, and a sealing assembly as described in any of the preceding embodiments. The knob 10 is used by the user to apply force, serving as a direct human-machine interface and providing a clear and intuitive operating method. The housing 30 includes an upper cover 31, a middle cover 32, and a lower cover 33 arranged sequentially from top to bottom, facilitating the step-by-step installation and maintenance of internal components. The top of the shifting mechanism 20 is embedded in the upper cover 31 and connected to the knob 10, ensuring that the rotational action applied by the user through the knob 10 is accurately transmitted to the internal shifting mechanism 20. Under the action of the shifting mechanism 20, the PCBA board 60 outputs different voltages, and the bottom of the shifting mechanism 20 penetrates the lower cover 33. The sealing assembly is used to seal the housing 30, creating a sealed cavity that completely isolates the internal space from the external environment. This effectively protects the delicate and fragile PBCA plate 60 inside the cavity from external contaminants such as water, oil, and dust, greatly ensuring the reliability, signal output accuracy, and long service life of the multi-position rotary switch under various complex and even harsh working conditions.

[0033] In some feasible embodiments of this utility model, the shifting mechanism 20 includes a rotating shaft 21, a rotating disk 22, and a gear position disk 24. The rotating shaft 21 is connected to the knob 10, ensuring direct torque transmission and sensitive response. The rotating disk 22 is connected to the rotating shaft 21, and a moving contact 23 is connected to the rotating disk 22, ensuring that the movement trajectory and position of the moving contact 23 always precisely correspond to the user's operating angle. The gear position disk 24 is integrally set on the middle cover 32, which not only simplifies the internal structure of the switch and reduces the number of parts, but also fundamentally ensures the positioning of the gear position disk 24 relative to the center position of the rotating shaft 21, greatly improving the long-term stability and reliability of the contact of the moving contact 23. Under the rotation of the rotating shaft 21, the moving contact 23 corresponds to different gears on the gear position disk 24, and the PCBA board 60 outputs different voltages, providing a corresponding, stable, and unique voltage signal for each discrete mechanical gear position.

[0034] In some feasible embodiments of this utility model, the knob 10 is provided with an indicator mark and also includes a positioning pin 50, which is disposed on the side of the upper cover 31 facing the knob 10. The indicator mark and the positioning pin 50 constitute an intuitive visual alignment system, which greatly improves the convenience and accuracy of operation. When the indicator mark is aligned with the positioning pin 50, the multi-position rotary switch corresponds to the first position, which not only provides a simple and reliable calibration benchmark, but also simplifies the complex alignment and debugging process, reduces assembly difficulty and error rate, and improves production efficiency and product consistency.

[0035] In some feasible embodiments of this utility model, the upper cover 31 includes a cover body 311 and a connecting cylinder 312. The cover body 311 is annular with a through hole in the middle. The connecting cylinder 312 extends from the cover body 311 toward the knob 10 and communicates with the through hole, greatly enhancing the radial support stability of the rotating shaft 21. A copper sleeve 40 is also included, which is disposed inside the connecting cylinder 312, and the rotating shaft 21 is rotatably disposed inside the copper sleeve 40. This effectively avoids direct wear of the connecting cylinder 312 by the rotating shaft 21, ensuring long-term stability of the mating clearance and greatly extending the mechanical life of the switch.

[0036] In some feasible embodiments of this utility model, a positioning hole is provided on the side of the knob 10 facing the upper cover 31, and the rotating shaft 21 is detachably inserted into the positioning hole, which improves the flexibility and customizability of the product, enhances the maintainability of the product, and reduces maintenance costs and maintenance difficulty. The outer circumference of the rotating shaft 21 is adapted to the inner circumference of the positioning hole, which can realize reliable torque transmission and precise angle positioning, ensuring the directness of operation and the accuracy of gear switching.

[0037] In some feasible embodiments of this utility model, the knob 10 includes a cap 11 and a handle 12. The cap 11 is circular, with its bottom positioned near the rotation axis 21. A positioning hole is provided in the center of the cap 11, which not only enhances the overall aesthetics of the product but also ensures that the rotational torque applied by the user can be reliably transmitted. The handle 12 is integrally formed on the top of the cap 11, structurally eliminating the risk of the handle 12 loosening or falling off due to long-term use. The handle 12 is arranged radially along the cap 11, providing convenience for the user to apply force. Utilizing the lever principle, the user only needs to apply a small force to easily rotate the knob 10, optimizing the ergonomic experience of operation.

[0038] In some feasible embodiments of this utility model, a nut 70 is also included. The outer periphery of the connecting cylinder 312 is provided with threads. The nut 70 is used to install the multi-position rotary switch on the platform and can provide reliable clamping force. It can effectively prevent the switch from loosening, falling off or rotating accidentally due to vibration or external force during use, and greatly ensures the stability and safety of the installation.

[0039] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing assembly, characterized in that, For a multi-position rotary switch, the multi-position rotary switch includes a knob (10), a shifting mechanism (20), and a housing (30). The knob (10) is connected to the shifting mechanism (20). The housing (30) includes an upper cover (31), a middle cover (32), and a lower cover (33) arranged sequentially from top to bottom. The top of the shifting mechanism (20) passes through the upper cover (31) and is connected to the knob (10). The bottom of the shifting mechanism (20) passes through the lower cover (33). The sealing assembly includes: The first sealing ring (1) is disposed between the shift mechanism (20) and the upper cover (31); The second sealing ring (2) is disposed between the upper cover (31) and the middle cover (32); The third sealing ring (3) is disposed between the middle cover (32) and the lower cover (33).

2. The sealing assembly according to claim 1, characterized in that, The multi-position rotary switch also includes a copper sleeve (40), and the shifting mechanism (20) is rotatably disposed inside the copper sleeve (40); the first sealing ring (1) is disposed between the shifting mechanism (20) and the copper sleeve (40).

3. The sealing assembly according to claim 1 or 2, characterized in that, The first sealing ring (1), the second sealing ring (2) and the third sealing ring (3) are all nitrile rubber O-rings.

4. A multi-position rotary switch, characterized in that, include: Knob (10); The housing (30) includes an upper cover (31), a middle cover (32) and a lower cover (33) arranged sequentially from top to bottom; A gear shifting mechanism (20) is provided, the top of which is embedded in the upper cover (31) and connected to the knob (10); PCBA board (60), under the action of the shifting mechanism (20), outputs different voltages, and the bottom of the shifting mechanism (20) penetrates the lower cover (33). The sealing assembly as described in any one of claims 1-3 is used to seal the housing (30).

5. The multi-position rotary switch according to claim 4, characterized in that, The shifting mechanism (20) includes: A rotating shaft (21) is connected to the knob (10); A rotating disk (22) is connected to the rotating shaft (21), and a moving contact (23) is connected to the rotating disk (22). The gear shift dial (24) is integrally mounted on the middle cover (32); under the rotation of the rotating shaft (21), the moving contact (23) corresponds to different gears of the gear shift dial (24), and the PCBA board (60) outputs different voltages.

6. The multi-position rotary switch according to claim 4, characterized in that, The knob (10) is provided with an indicator mark and also includes a positioning pin (50) located on the side of the upper cover (31) facing the knob (10). When the indicator mark is aligned with the positioning pin (50), the multi-position rotary switch corresponds to the first position.

7. The multi-position rotary switch according to claim 5, characterized in that, The upper cover (31) includes: The cover (311) is circular in shape and has a through hole in the middle; A connecting cylinder (312) extends from the cover (311) toward the knob (10) and communicates with the through hole; It also includes a copper sleeve (40), which is disposed inside the connecting cylinder (312), and the rotating shaft (21) is rotatably disposed inside the copper sleeve (40).

8. The multi-position rotary switch according to claim 7, characterized in that, The knob (10) has a positioning hole on the side facing the upper cover (31), and the rotating shaft (21) is detachably inserted into the positioning hole. The outer circumference of the rotating shaft (21) is adapted to the inner circumference of the positioning hole.

9. The multi-position rotary switch according to claim 7, characterized in that, The knob (10) includes: The cap body (11) is circular, with its bottom positioned close to the rotating shaft (21), and a positioning hole is provided in the middle of the cap body (11); The grip (12) is integrally disposed on the top of the cap body (11); the grip (12) is disposed radially along the cap body (11).

10. The multi-position rotary switch according to claim 7, characterized in that, It also includes a nut (70), the outer periphery of which is provided with threads, and the nut (70) is used to install the multi-position rotary switch on the platform.

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