An encoder and a mouse

By sealing the second through hole and using a sealing structure, the problem of foreign object intrusion into the encoder is solved, improving the encoder's stability and durability, making it suitable for applications with high dustproof and waterproof requirements.

CN224595095UActive Publication Date: 2026-08-04HUIZHOU TRANTEK ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZHOU TRANTEK ELECTRONICS
Filing Date
2025-09-04
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The housing design of existing encoders makes them susceptible to the ingress of external foreign objects such as moisture and dust, leading to problems such as rotor jamming and electrical short circuits, which affect reliability and service life.

Method used

The design of the second through hole is closed by the outer shell. Combined with the sealing structure of the extension, fastener and gasket, the risk of foreign object intrusion is reduced, while the first through hole is retained for connecting external rotating parts.

Benefits of technology

It significantly reduces the probability of rotor jamming and electrical short circuits, enhances the stability and durability of the encoder in complex environments, and is suitable for applications with high dustproof and waterproof requirements.

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Abstract

This utility model discloses an encoder and a mouse. The encoder includes a housing, a fixing member, and a rotor. The housing includes a base and an outer shell. The fixing member is connected to the base to enclose a receiving cavity. The base and the fixing member are respectively provided with a first through hole and a second through hole, which are arranged opposite to each other. The two ends of the rotor's shaft are rotatably inserted through the first and second through holes, allowing the rotor to rotate within the receiving cavity. The outer shell is connected to the base and closes the outside of the second through hole. Through this structure, the sealing of the outside of the second through hole by the outer shell can greatly reduce the entry of external foreign objects such as moisture and dust into the encoder, thereby significantly reducing problems such as rotor jamming and electrical short circuits caused by foreign object intrusion. The first through hole is still retained for connecting external rotating components.
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Description

Technical Field

[0001] This utility model relates to the field of human-computer interaction input device technology, and in particular to an encoder and a mouse. Background Technology

[0002] Encoders, as key components in human-computer interaction devices, are widely used in various mouse products to detect the rotation of the mouse wheel. In existing technology, some encoders include a housing and a rotor rotatably housed within it. The housing has two opposing through holes, through which the rotor's two end shafts rotatably pass. One through hole is used for the connection shaft of an external mouse wheel to connect to the corresponding end shaft of the rotor. However, through market research and further investigation, the inventors discovered that the dual-through-hole design of the housing allows moisture, dust, and other foreign matter to easily enter the encoder through the through hole not used for the connection shaft. This can easily lead to rotor jamming, electrical short circuits, and other problems, significantly affecting the encoder's reliability and lifespan. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an encoder.

[0004] This invention also proposes a mouse with the encoder.

[0005] An encoder according to a first aspect of the present invention includes a housing, a fixing member, and a rotor. The housing includes a base and an outer shell. The fixing member is connected to the base to enclose a receiving cavity. The base and the fixing member are respectively provided with a first through hole and a second through hole. The first through hole and the second through hole are arranged opposite to each other. The two ends of the rotor are rotatably passed through the first through hole and the second through hole respectively to allow the rotor to rotate in the receiving cavity. The outer shell is connected to the base and closes the outside of the second through hole.

[0006] An encoder according to an embodiment of the present invention has at least the following beneficial effects:

[0007] Through the aforementioned structure, the sealing of the outer side of the second through-hole by the housing significantly reduces the entry of external foreign objects such as moisture and dust into the encoder, thereby greatly minimizing problems such as rotor jamming and electrical short circuits caused by foreign object intrusion. The first through-hole is still retained for connecting external rotating components (such as the connecting shaft of a mouse wheel). Furthermore, the improved sealing structure of this embodiment significantly enhances the encoder's operational stability in complex environments, reduces the probability of failure, and extends the device's lifespan, making it particularly suitable for applications with high dust and water resistance requirements.

[0008] According to a second aspect of the present invention, an encoder includes a housing, a fixing member, and a rotor. The housing has a receiving cavity and a first through hole. The fixing member is disposed in the receiving cavity and has a second through hole opposite to the first through hole. The two ends of the rotor are rotatably inserted through the first through hole and the second through hole, respectively, so that the rotor is rotatably disposed in the receiving cavity.

[0009] An encoder according to an embodiment of the present invention has at least the following beneficial effects:

[0010] By integrating the fixing component inside the accommodating cavity through the above structure, the risk of external foreign objects (such as moisture and dust) entering through the second through hole can be significantly reduced, thereby greatly minimizing problems such as rotor jamming and electrical short circuits caused by foreign object intrusion. The first through hole is still retained for connecting external rotating components (such as the connecting shaft of a mouse scroll wheel). Furthermore, the improved sealing structure of this embodiment effectively isolates the influence of the external environment on the sensitive components inside the encoder, ensuring stable operation of the encoder under complex or harsh conditions and significantly improving the reliability and durability of the product.

[0011] According to some embodiments of the present invention, the hole wall of the first through hole is provided with an extension, and one end shaft of the rotor passing through the first through hole is located inside the extension.

[0012] According to some embodiments of this utility model, the encoder is a mechanical encoder or an optical encoder.

[0013] According to some embodiments of the present invention, the rotor is provided with a noise-reducing component.

[0014] According to some embodiments of the present invention, a first gasket is provided between the fixing member and the outer shell.

[0015] According to some embodiments of the present invention, one of the fixing member and the first gasket is provided with a positioning part, and the other is provided with a positioning hole, wherein the positioning part is inserted into the positioning hole.

[0016] According to some embodiments of the present invention, the base is provided with a cavity with an opening, the fixing member is provided at the opening to surround the receiving cavity with the side wall of the cavity, and the fixing member is clamped between the outer shell and the base.

[0017] The mouse according to a third aspect embodiment of the present invention includes an encoder as described above.

[0018] The mouse according to the present invention has at least the following beneficial effects: the above structure can greatly reduce problems such as rotor jamming and electrical short circuit caused by foreign objects entering the encoder.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural diagram of an embodiment of the encoder of this utility model;

[0022] Figure 2 for Figure 1 Another structural diagram of the encoder shown;

[0023] Figure 3 for Figure 1 A cross-sectional view of the encoder shown;

[0024] Figure 4 for Figure 1 An exploded view of the encoder shown;

[0025] Figure 5 This is a structural diagram of another embodiment of the encoder of this utility model;

[0026] Figure 6 for Figure 5 Another structural diagram of the encoder shown;

[0027] Figure 7 for Figure 5 A cross-sectional view of the encoder shown;

[0028] Figure 8 for Figure 5 The encoder shown is an exploded view.

[0029] Figure label:

[0030] Housing 100, base 110, first through hole 111, extension 111A, chamber 112, outer shell 120;

[0031] Fixing component 200, second through hole 210, positioning part 220;

[0032] Rotor 300;

[0033] Silencing component 400;

[0034] First gasket 500, positioning hole 510;

[0035] Positioning plate 600;

[0036] Switching plate 700;

[0037] Second gasket 800;

[0038] Receptacle S. Detailed Implementation

[0039] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0040] In the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0043] Reference Figures 1 to 4This utility model discloses an encoder, specifically a mechanical encoder, which includes a housing 100, a fixing member 200, and a rotor 300. The housing 100 includes a base 110 and an outer shell 120. The fixing member 200 is connected to the base 110 to surround a receiving cavity S. The base 110 and the fixing member 200 are respectively provided with a first through hole 111 and a second through hole 210. The first through hole 111 and the second through hole 210 are arranged opposite to each other. The two ends of the rotor 300 are rotatably inserted through the first through hole 111 and the second through hole 210 respectively so that the rotor 300 is rotatably disposed in the receiving cavity S. The outer shell 120 is connected to the base 110 and closes the outside of the second through hole 210.

[0044] Through the aforementioned structure, the enclosure 120's sealing of the outer side of the second through-hole 210 significantly reduces the entry of external foreign objects such as moisture and dust into the encoder through the second through-hole 210. This greatly reduces the likelihood of problems such as rotor 300 jamming and electrical short circuits caused by foreign object intrusion. The first through-hole 111 is still retained for connecting external rotating components (such as the connecting shaft of a mouse wheel). Furthermore, the improved sealing structure of this embodiment significantly enhances the encoder's operational stability in complex environments, reduces the probability of failure, and extends the device's lifespan, making it particularly suitable for applications with high dust and water resistance requirements.

[0045] Understandably, referring to Figure 3 and Figure 4 The mechanical encoder of this application also includes a positioning piece 600 disposed between the fixing member 200 and the rotor 300, and a switching piece 700 disposed between the rotor 300 and the base 110. The functions of the positioning piece 600 and the switching piece 700 are well known to those skilled in the art, and therefore will not be described again here.

[0046] The fastener 200 is connected to the base 110 to enclose the receiving cavity S. For details, refer to... Figure 3 and Figure 4 The base 110 is provided with a cavity 112 with an opening. The fastener 200 is provided at the opening to surround the accommodating cavity S with the side wall of the cavity 112, and the fastener 200 is sandwiched between the outer shell 120 and the base 110.

[0047] In some embodiments, refer to Figures 5 to 8The encoder is specifically an optical encoder, which includes a housing 100, a fixing member 200, and a rotor 300. The housing 100 includes a base 110 and an outer shell 120. The fixing member 200 is connected to the base 110 to enclose a receiving cavity S. The base 110 and the fixing member 200 are respectively provided with a first through hole 111 and a second through hole 210, which are arranged opposite to each other. The two ends of the rotor 300 are rotatably passed through the first through hole 111 and the second through hole 210, respectively, so that the rotor 300 is rotatably disposed in the receiving cavity S. The outer shell 120 is connected to the base 110 and closes the outside of the second through hole 210. It is understood that the optical encoder in this embodiment also includes a positioning piece 600 disposed between the fixing member 200 and the rotor 300, and a second shim 800 for shock absorption disposed between the fixing member 200 and the positioning piece 600. The functions of the positioning piece 600 and the second shim 800 are well known to those skilled in the art, and therefore will not be described again here.

[0048] In some embodiments, an encoder includes a housing 100, a fixing member 200, and a rotor 300. The housing 100 has a receiving cavity S and a first through hole 111. The fixing member 200 is disposed in the receiving cavity S and has a second through hole 210 disposed opposite to the first through hole 111. The two ends of the rotor 300 are rotatably inserted through the first through hole 111 and the second through hole 210 respectively so that the rotor 300 is rotatably disposed in the receiving cavity S.

[0049] With the above structure, the fixing member 200 is integrated inside the accommodating cavity S, which significantly reduces the risk of external foreign objects (such as moisture and dust) entering through the second through hole 210. This greatly reduces the likelihood of problems such as rotor 300 jamming and electrical short circuits caused by foreign object intrusion. The first through hole 111 is still reserved for connecting external rotating components (such as the connecting shaft of a mouse wheel). Furthermore, the improved sealing structure in this embodiment effectively isolates the influence of the external environment on the sensitive components inside the encoder, ensuring stable operation of the encoder under complex or harsh conditions and significantly improving the reliability and durability of the product.

[0050] In this embodiment, refer to Figure 3 The first through hole 111 has an extension 111A around its hole wall, and one end shaft of the rotor 300 passing through the first through hole 111 is located inside the extension 111A.

[0051] With the above structure, the extension 111A acts as a "baffle" for foreign objects that move in axially through the first through hole 111, increasing the difficulty of intrusion and extending the intrusion path of the foreign object. Therefore, the design of the extension 111A can greatly improve the waterproof and dustproof performance.

[0052] In this embodiment, refer to Figure 3 and Figure 4 The rotor 300 is equipped with a noise reduction component 400. The noise reduction component 400 can greatly reduce the noise transmitted outward through the component.

[0053] In this embodiment, refer to Figure 3 and Figure 4 A first gasket 500 is provided between the fixing member 200 and the outer shell 120. The fixing member 200 is provided with a positioning part 220. The first gasket 500 is provided with a positioning hole 510. The positioning part 220 is inserted into the positioning hole 510.

[0054] Through the above structure, the first gasket 500 can be compressed between the fixing member 200 and the housing 120 to form a sealing ring effect, greatly reducing the risk of external foreign matter (water, dust) intrusion. Furthermore, the first gasket 500 (typically made of elastic materials such as rubber or silicone) undergoes elastic deformation under the compression of the positioning part 220 and the housing, thereby tightly filling the microscopic gaps and unevenness caused by machining tolerances between the fixing member 200 and the housing 120, achieving excellent sealing performance. Of course, the first gasket 500 also provides the encoder with a certain degree of vibration damping.

[0055] In some embodiments, the positioning part 220 is provided on the first gasket 500, and the positioning hole 510 is provided on the fixing member 200.

[0056] This invention also proposes a mouse that includes the aforementioned encoder. This structure significantly reduces the occurrence of problems such as rotor jamming and electrical short circuits caused by foreign objects entering the encoder.

[0057] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An encoder, characterized in that: The device includes a housing (100), a fixing member (200), and a rotor (300). The housing (100) includes a base (110) and an outer shell (120). The fixing member (200) is connected to the base (110) to enclose a receiving cavity (S). The base (110) and the fixing member (200) are respectively provided with a first through hole (111) and a second through hole (210). The first through hole (111) and the second through hole (210) are arranged opposite to each other. The two ends of the rotor (300) are rotatably inserted through the first through hole (111) and the second through hole (210) respectively so that the rotor (300) is rotatably disposed in the receiving cavity (S). The outer shell (120) is connected to the base (110) and closes the outside of the second through hole (210).

2. An encoder according to claim 1, characterized in that: A first gasket (500) is provided between the fastener (200) and the outer shell (120).

3. An encoder according to claim 2, characterized in that: One of the fastener (200) and the first gasket (500) is provided with a positioning part (220), and the other is provided with a positioning hole (510). The positioning part (220) is inserted into the positioning hole (510).

4. An encoder according to claim 1, characterized in that: The base (110) is provided with a cavity (112) with an opening, and the fastener (200) is provided at the opening to surround the receiving cavity (S) with the side wall of the cavity (112), and the fastener (200) is sandwiched between the outer shell (120) and the base (110).

5. An encoder, characterized in that: The device includes a housing (100), a fixing member (200), and a rotor (300). The housing (100) has a receiving cavity (S) and a first through hole (111). The fixing member (200) is located in the receiving cavity (S). The fixing member (200) has a second through hole (210) that is opposite to the first through hole (111). The two ends of the rotor (300) are rotatably inserted through the first through hole (111) and the second through hole (210) respectively so that the rotor (300) is rotatably located in the receiving cavity (S).

6. An encoder according to claim 1 or 5, characterized in that: The first through hole (111) has an extension (111A) around its hole wall, and one end shaft of the rotor (300) passing through the first through hole (111) is located inside the extension (111A).

7. An encoder according to claim 1 or 5, characterized in that: The encoder is either a mechanical encoder or an optical encoder.

8. An encoder according to claim 1 or 5, characterized in that: The rotor (300) is equipped with a noise reduction component (400).

9. A mouse, characterized in that: Includes an encoder as described in any one of claims 1-8.