Encoder and key integration module of smart watch

Abstract

The utility model discloses an encoder and key integration module of an intelligent watch. The encoder and key integration module comprises a bottom shell, keys, a middle shell, an encoder rotating shaft and an encoder light sensing device, keys are arranged at the rear end of the bottom shell; the middle shell is provided with a shaft hole, the encoder rotating shaft is movably installed in the shaft hole, and the rear end of the encoder rotating shaft is matched with the key in a pressing mode. The encoder light sensing device is positioned below the rear end of the encoder rotating shaft; an annular positioning table, a first positioning groove and a second positioning groove are arranged on the encoder rotating shaft, a spring is installed outside the encoder rotating shaft, and the front end of the spring is elastically matched with the annular positioning table in an abutting mode. A sealing ring is installed in the first positioning groove and is in interference fit with the hole wall of the rear end of the shaft hole. And a clamp spring is mounted in the second positioning groove. According to the utility model, the encoder and the button assembly of the intelligent watch can be integrated together, the occupied volume is small, the assembly cost is low, and the encoder rotating shaft is good in waterproof sealing performance, not easy to loosen and good in pressing springback hand feeling.

Description

Technical Field

[0001] The utility model relates to the technical field of smart watches, and in particular to an encoder and button integrated module of a smart watch. Background Art

[0002] At present, the structure of smart watches with button and encoder functions on the market is usually composed of independent encoders and button switches and related components. The encoders and buttons are not integrated together, and modular smart equipment cannot be achieved. Usually, due to component limitations, the large space occupied affects the appearance of fine aesthetics. The product design is very complex, resulting in increased component costs. The assembly consistency cannot be guaranteed, which affects the function and directly leads to uncontrollable assembly and process quality inspection costs.

[0003] With the advancement of technology, integrated module structures of encoders and buttons have gradually emerged in the field of smart watches. See Chinese patent CN 219302893 U, which discloses a crown detection device for a smart watch. The crown has a watch shaft and a button. The watch shaft rotation angle is identified by an optical detection module. For the button on the crown, a button detection circuit is separately set for detection, so that the watch shaft rotation angle identification and button detection processes are performed independently. The device for watch shaft rotation detection and the device for button detection are both connected to the interface bus control circuit, and then connected to the main controller of the smart watch by the interface bus control circuit, eliminating the connection line between the button detection circuit and the main controller, and avoiding the time difference between button detection and watch shaft rotation detection. The patent integrates the encoder and the button together, occupies a smaller volume, and simplifies the overall structure. However, the patent CN 219302893 U does not disclose how the encoder shaft, button and optical detection module are installed between the watch case. In the prior art, there are often problems of poor waterproof sealing performance and easy loosening between the encoder shaft and the case of smart watches. At the same time, the encoder shaft is not equipped with a spring device and has no press-to-rebound function. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an encoder and button integrated module for a smart watch in view of the deficiencies of the above-mentioned prior art, which can integrate the encoder and button components of the smart watch together, occupy a small volume and have a low assembly cost, and the encoder shaft has good waterproof sealing performance, is not easy to loosen, and has a good pressing rebound feel.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an encoder and button integrated module of a smart watch, comprising a bottom shell, a button, a middle shell, an encoder shaft and an encoder light-sensing device; a button positioning seat is provided on the rear end of the bottom shell, and the button is located on the front side of the button positioning seat; the middle shell is installed on the front end of the bottom shell, and the middle shell is provided with an axial hole extending in the front-back direction, the encoder shaft is movably installed in the axial hole, and the rear end of the encoder shaft extends backward out of the axial hole, and the rear end end of the encoder shaft is pressed and matched with the button; the encoder light-sensing device is located on the upper middle side of the bottom shell, and Located at the lower rear end of the encoder shaft to identify the rotation data of the encoder shaft; an annular positioning platform, a first positioning groove and a second positioning groove are arranged on the encoder shaft from front to back, the front end hole wall of the shaft hole is provided with a spring positioning cavity, a spring is installed outside the encoder shaft, and the spring is accommodated in the spring positioning cavity, and the front end of the spring is elastically abutted against the annular positioning platform; a sealing ring is installed in the first positioning groove, and the sealing ring is interference fit with the rear end hole wall of the shaft hole; a retaining spring is installed in the second positioning groove, and the front side of the retaining spring is limited and abutted against the outer side of the rear end end of the shaft hole.

[0006] Preferably, the encoder and button integrated module of the smart watch also includes an FPC, the front end of the FPC is fixed on the middle part of the bottom shell, and the encoder photosensitive device is welded on the front end of the FPC; the rear end of the FPC is bent upward and fixed to the front side of the button positioning seat, and the button is welded to the front side of the rear end of the FPC; the FPC is also provided with a motherboard connection terminal for connecting to the smart watch motherboard.

[0007] Preferably, a first reinforcing plate and a first adhesive layer are provided at the lower side of the front end of the FPC, and a second reinforcing plate and a second adhesive layer are provided at the rear side of the rear end of the FPC.

[0008] Preferably, a middle shell top block is provided at the bottom of the rear end of the middle shell, and the middle shell top block extends to the upper position of the front end of the FPC. An EVA clamping block is installed between the middle shell top block and the front end of the FPC, and the middle shell top block and the FPC are respectively interference fit with the EVA clamping block.

[0009] Preferably, a silicone key cover is installed on the key positioning seat of the bottom shell, and the front end of the silicone key cover extends downward to the front side of the key and is located in the gap between the key and the encoder shaft.

[0010] Preferably, a shaft cap is integrally connected to the front end of the encoder shaft.

[0011] The beneficial effects of the utility model are as follows: the utility model has a button positioning seat on the rear end of the bottom shell, the button is located on the front side of the button positioning seat, the middle shell is installed on the front end of the bottom shell, the middle shell is provided with an axial hole extending in the front-to-back direction, the encoder shaft is movably installed in the axial hole, and the rear end of the encoder shaft extends backward out of the axial hole, the rear end of the encoder shaft is pressed and matched with the button, the encoder photosensitive device is located on the upper middle side of the bottom shell and at the lower rear end of the encoder shaft to identify the rotation data of the encoder shaft, therefore, the encoder and button assembly of the smart watch can be integrated together, the button is pressed by the encoder shaft, and the rotation data of the encoder shaft is identified by the encoder photosensitive device, the overall occupied volume is small, and the assembly cost is low; The utility model has an annular positioning platform, a first positioning groove and a second positioning groove arranged in sequence from front to back on the encoder shaft, a spring positioning cavity is arranged on the front end hole wall of the shaft hole, a spring is installed outside the encoder shaft, and the spring is accommodated in the spring positioning cavity, the front end of the spring elastically abuts against the annular positioning platform, a sealing ring is installed in the first positioning groove, the sealing ring is interference-fitted with the rear end hole wall of the shaft hole, a retaining spring is installed in the second positioning groove, the front side of the retaining spring is limitedly abutted against the outer side of the rear end portion of the shaft hole, therefore, on the one hand, the sealing ring can make the encoder shaft and the shaft hole have sealing and waterproof performance, on the other hand, the retaining spring can prevent the encoder shaft from loosening outward in the shaft hole, and the spring can make the encoder shaft have a good pressing rebound feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall structure diagram of the utility model.

[0013] Figure 2 This is a diagram of the dispersed structure of the utility model.

[0014] Figure 3 It is a longitudinal sectional structural diagram of the utility model.

[0015] Figure 4 This is a structural diagram of the FPC of the present utility model. DETAILED DESCRIPTION

[0016] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", etc. indicate directions or positional relationships based on the directions or positional relationships shown on the smart watch. For example, the "front end" refers to the end of the shaft cap close to the encoder shaft, and the "rear end" refers to the end close to the button positioning seat. The above terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0018] like Figure 1-Figure 4 As shown, the utility model is an encoder and button integrated module of a smart watch, including a bottom shell 1, a button 2, a middle shell 3, an encoder shaft 4 and an encoder light sensing device 5; it should be noted that, in order to clearly show the encoder and button integrated module, the attached Figure 1-3 The bottom shell 1 and the middle shell 3 in the figure only show the parts related to the encoder and the button; a button positioning seat 11 is provided on the rear end of the bottom shell 1, and the button 2 is located on the front side of the button positioning seat 11; the middle shell 3 is installed on the front end of the bottom shell 1, and the middle shell 3 is provided with an axial hole 31 extending in the front-to-back direction, and the encoder shaft 4 is movably installed in the axial hole 31, and the rear end of the encoder shaft 4 extends backward from the axial hole 31, and the rear end of the encoder shaft 4 is pressed and matched with the button 2; the encoder light sensor 5 is located on the upper middle side of the bottom shell 1 and at the lower position of the rear end of the encoder shaft 4 to identify the encoder shaft 4. Rotation data; an annular positioning platform 41, a first positioning groove 42 and a second positioning groove 43 are arranged on the encoder shaft 4 from front to back, a spring positioning cavity 311 is arranged on the front end wall of the shaft hole 31, a spring 6 is installed outside the encoder shaft 4, and the spring 6 is accommodated in the spring positioning cavity 311, and the front end of the spring 6 is elastically pressed against the annular positioning platform 41; a sealing ring 7 is installed in the first positioning groove 42, and the sealing ring 7 is interference fit with the rear end wall of the shaft hole 31; a retaining spring 8 is installed in the second positioning groove 43, and the front side of the retaining spring 8 is limited and pressed against the outer side of the rear end of the shaft hole 31. The utility model can integrate the encoder and button 2 components of the smart watch together, press the button 2 through the encoder shaft 4, and identify the rotation data of the encoder shaft 4 through the encoder photosensitive device 5. The overall occupied volume is small and the assembly cost is low; the sealing ring 7 of the utility model can make the encoder shaft 4 and the shaft hole 31 have sealing and waterproof properties, the retaining spring 8 of the utility model can prevent the encoder shaft 4 from loosening outward in the shaft hole 31, and play a role in fixing the encoder shaft 4; the spring 6 of the utility model can make the encoder shaft 4 have a good pressing rebound feel.

[0019] like Figure 1-Figure 4As shown, the encoder and button integrated module of the smart watch also includes FPC9, the front end of the FPC9 is fixed on the middle part of the bottom shell 1, and the encoder photosensitive device 5 is welded on the front end of the FPC9; the rear end of the FPC9 is bent upward and fixed to the front side of the button positioning seat 11, and the button 2 is welded to the front side of the rear end of the FPC9; the FPC9 is also provided with a motherboard connection terminal 91 for connecting to the motherboard of the smart watch (not shown). The lower side of the front end of the FPC9 is provided with a first reinforcement plate 92 and a first adhesive layer 93, and the rear side of the rear end of the FPC9 is provided with a second reinforcement plate 94 and a second adhesive layer 95. By setting up the FPC, the encoder photosensitive device 5 and the button 2 are integrated together, and both are connected to the smart watch motherboard through the motherboard connection terminal 91, which can reduce parts, simplify assembly, and improve product stability.

[0020] like Figure 1-Figure 3 As shown, a middle shell top block 32 is provided at the bottom of the rear end of the middle shell 3, and the middle shell top block 32 extends to the upper position of the front end of the FPC 9. An EVA clamping block 10 is installed between the middle shell top block 32 and the front end of the FPC 9, and the middle shell top block 32 and the FPC 9 are respectively interference-fitted with the EVA clamping block 10. By providing the EVA clamping block 10, the FPC assembly gap can be absorbed, thereby improving the stability.

[0021] like Figure 1-Figure 3 As shown, a silicone key cover 20 is installed on the key positioning seat 11 of the bottom shell 1, and the front end of the silicone key cover 20 extends downward to the front side of the key 2 and is located in the gap between the key 2 and the encoder shaft 4. Pressing the encoder shaft 4 activates the switch function of the key 2 in the FPC, wherein the silicone key cover 20 plays a role in absorbing the gap between the encoder shaft 4 and the key 2 switch, thereby improving the feel of the key 2.

[0022] like Figure 1-Figure 3 As shown, the front end of the encoder shaft 4 is integrally connected with a shaft cap 44 , so that the encoder shaft 4 can be pressed and rotated by the shaft cap 44 .

[0023] The assembly method of the utility model is as follows: 1) install the FPC on the bottom shell 1; 2) install the EVA pressing block 10 on the bottom shell 1 and press it on the front end of the FPC; 3) install the silicone key cover 20 on the key positioning seat 11, and make the front end of the silicone key cover 20 extend to the front side of the key 2; 4) install the spring 6 and the sealing ring 7 on the encoder shaft 4 respectively; 5) insert the encoder shaft 4 into the shaft hole 31 of the middle shell 3 from front to back, and fix the encoder shaft 4 with the retaining spring 8; 6) install the middle shell on the front end of the bottom shell 1.

[0024] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An encoder and button integrated module for a smart watch, characterized in that: The invention comprises a bottom shell, a button, a middle shell, an encoder shaft and an encoder photosensitive device; a button positioning seat is arranged on the rear end of the bottom shell, and the button is located at the front side of the button positioning seat; the middle shell is installed on the front end of the bottom shell, and the middle shell is provided with an axial hole extending in the front-back direction, the encoder shaft is movably installed in the axial hole, and the rear end of the encoder shaft extends backward out of the axial hole, and the rear end of the encoder shaft is pressed and matched with the button; the encoder photosensitive device is located on the upper middle side of the bottom shell and located at the lower rear end of the encoder shaft to identify the rotation data of the encoder shaft; an annular positioning platform, a first positioning groove and a second positioning groove are arranged on the encoder shaft from front to back, a spring positioning cavity is arranged on the front end hole wall of the shaft hole, a spring is installed outside the encoder shaft, and the spring is accommodated in the spring positioning cavity, and the front end of the spring is elastically pressed against the annular positioning platform; a sealing ring is installed in the first positioning groove, and the sealing ring is interference-fitted with the rear end hole wall of the shaft hole; a retaining spring is installed in the second positioning groove, and the front side of the retaining spring is limited and pressed against the outer side of the rear end of the shaft hole.

2. The encoder and button integrated module of the smart watch according to claim 1, characterized in that: It also includes an FPC, the front end of which is fixed on the middle part of the bottom shell, and the encoder photosensitive device is welded on the front end of the FPC; the rear end of the FPC is bent upward and fixed to the front side of the button positioning seat, and the button is welded to the front side of the rear end of the FPC; the FPC is also provided with a motherboard connection terminal for connecting to the smart watch motherboard.

3. The encoder and button integrated module of the smart watch according to claim 2, characterized in that: A first reinforcing plate and a first adhesive layer are disposed on the lower side of the front end of the FPC, and a second reinforcing plate and a second adhesive layer are disposed on the rear side of the rear end of the FPC.

4. The encoder and button integrated module of the smart watch according to claim 2, characterized in that: A middle shell top block is provided at the bottom of the rear end of the middle shell, and the middle shell top block extends to the upper position of the front end of the FPC. An EVA clamping block is installed between the middle shell top block and the front end of the FPC, and the middle shell top block and the FPC are respectively interference fit with the EVA clamping block.

5. The encoder and button integrated module of the smart watch according to claim 2, characterized in that: A silicone key cover is installed on the key positioning seat of the bottom shell, and the front end of the silicone key cover extends downward to the front side of the key and is located in the gap between the key and the encoder shaft.

6. The encoder and button integrated module of the smart watch according to claim 1, characterized in that: The front end of the encoder shaft is integrally connected with a shaft cap.

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