Quartz electronic watch with electrostatic induction
By introducing an electrostatic induction device into the quartz watch and utilizing a combination of insulating structure and conductive plate design, the problem of timekeeping accuracy and frequency fluctuations caused by static electricity accumulation inside the movement has been solved, resulting in more stable quartz watch operation.
Patent Information
- Application Number
- CN202510541117.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2045-04-28
AI Technical Summary
During prolonged use, static electricity buildup in quartz watches can affect timekeeping accuracy and frequency fluctuations due to internal static electricity buildup. Traditional encapsulation cases cannot effectively eliminate external static interference.
An electrostatic induction device, including an insulating structure and a conductive mechanism, is used to conduct static electricity inside the movement to the housing and release it to the ground through a conductive plate. The combination of the insulating structure and the conductive plate neutralizes the static electricity inside and outside the movement.
It effectively reduces the impact of high-frequency static electricity inside and outside the movement on the movement's operation, improves the quartz watch's anti-static interference capability, and ensures timekeeping accuracy and stability.
Smart Images

Figure CN120762264B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of quartz watch technology, and more specifically to a quartz electronic watch with electrostatic induction. Background Technology
[0002] Quartz watches work by utilizing a quartz oscillator to generate stable mechanical vibrations through the piezoelectric effect. This mechanical motion is then converted into electrical changes via electrodes, driving the watch's precise timekeeping mechanism. However, over prolonged use, static electricity can accumulate inside the movement due to friction between insulating materials such as plastic gears and circuit boards. For example, in motor-driven applications, insulating materials like nylon and ABS gears, when rotating at high speeds with metal shafts, generate static electricity that, if not released through lubrication or grounding, accumulates around the gear set and circuit board, affecting the movement's operation through air discharge. Simultaneously, in dry environments (humidity <40%), the surface resistivity of all insulating materials within the movement increases, making it difficult for charges to dissipate naturally. Even if the quartz oscillator itself is well-encapsulated, static electricity accumulated in surrounding components can still couple into its circuitry. This internal static electricity buildup can alter the equivalent capacitance of the crystal through surface charge, thus changing the resonant frequency; or it can generate electromagnetic pulses from electrostatic discharge, interfering with the oscillation circuit, causing temporary oscillation stoppage or frequency fluctuations, leading to decreased timekeeping accuracy or occasional oscillation stoppage. Furthermore, long-term static electricity accumulation can cause aging of insulating materials, affecting the seal of the enclosure and consequently impacting the movement's operating environment.
[0003] Traditional methods for removing static electricity from the movement of a quartz watch include encapsulating the oscillator or applying a shielding insulating material. However, the insulating material may undergo chemical reactions due to environmental temperature and humidity, leading to a re-accumulation of static electricity. While the oscillator's encapsulation can shield the internal static electricity of the oscillator and significantly reduce its own potential as a source of static charge, the static electricity accumulated inside the movement can cause the oscillator frequency to drift or stop oscillating through air discharge or conductive coupling. The encapsulation cannot eliminate these external factors. Therefore, a new type of quartz watch is needed that can neutralize static electricity within the movement. Summary of the Invention
[0004] In view of the above problems, the present invention proposes a quartz electronic watch with electrostatic induction, including a case, a watch strap connected to the case, and a dial fastened and installed inside the case. A dustproof disc and a positioning disc are installed at the lower end of the dial. The positioning disc is equipped with a movement, a gear transmission mechanism, and an electrostatic induction device for neutralizing static electricity on the outside of the movement. The electrostatic induction device includes an insulating structure and conductive mechanisms symmetrically arranged at both ends of the insulating structure. The insulating structure is fixedly installed on the upper surface of the positioning disc, and the body of the insulating structure is located in the middle of a square groove provided on the side of the dustproof disc. The two conductive mechanisms are respectively connected to a conductive plate provided on the upper surface of the dustproof disc. The end of the conductive plate contacts the inner side of the case. A positioning mechanism is provided between the dustproof disc and the positioning disc.
[0005] Preferably, the body is an insulating sleeve with an arc-shaped columnar structure. A first mounting groove is provided on the inner end face of the body, and a second mounting groove is provided on the outer upper end face of the body. The first mounting groove and the second mounting groove are connected. A flexible insulating layer is attached to the first mounting groove, and a first conductor sheet is installed in the first mounting groove and the second mounting groove. The first conductor sheet is snapped into the connection between the first mounting groove and the second mounting groove. The first conductor sheet located in the first mounting groove is attached to the flexible insulating layer. A second conductor sheet is fixedly installed at the end of the first conductor sheet located in the second mounting groove. The second conductor sheet has an arc-shaped structure and is snapped into a third mounting groove located at the side end of the body. The end of the second conductor sheet is fixedly connected to one end of a conductive plate, and the other end of the conductive plate is connected to the housing.
[0006] Preferably, the movement includes an oscillating integrated circuit, on which a quartz oscillator is provided, and the body is fitted to the outside of the quartz oscillator, with a gap between the body and the outer shell of the quartz oscillator.
[0007] Preferably, the first conductor sheet has a thickness of 0.1 mm to 0.2 mm, and the distance between the outer wall of the first conductor sheet installed in the first mounting groove and the outer wall of the quartz oscillator is 0.1 mm to 0.5 mm.
[0008] Preferably, the insulating structure is made of polyurethane.
[0009] Preferably, the first conductor sheet, the second conductor sheet, and the conductive plate are made of copper or silver.
[0010] Preferably, the flexible insulating layer is made of polydimethylsiloxane.
[0011] Preferably, the ends of the first conductor sheet and the second conductor sheet are fixedly mounted to the connection between the second mounting groove and the third mounting groove by screws.
[0012] Preferably, the lower end of the main body is provided with a positioning plate, which is fixedly installed on the positioning disk by screws.
[0013] Preferably, an insulating plate is provided between the two conductive mechanisms.
[0014] Compared with the prior art, this technical solution has the following advantages: Based on the principle of electrostatic induction, this application neutralizes the static electricity that affects the movement, effectively reducing the impact of high-frequency static electricity inside and outside the movement on the movement's operation, making the quartz watch more adaptable to electrostatic interference. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 The diagram shown is a schematic of the structure of a quartz electronic watch.
[0017] Figure 2 The image shown is a schematic diagram of the main body;
[0018] Figure 3 The image shown is a top view of the main body;
[0019] Figure 4 The diagram shows a schematic of an electrostatic induction device with only the first conductive sheet installed.
[0020] Figure 5 The diagram shown is a schematic of the electrostatic induction device after installation.
[0021] Figure 6 The image shows a partial schematic diagram after the electrostatic induction device has been installed. Detailed Implementation
[0022] To enable those skilled in the art to better understand the technical solution of this application, the following description is provided in conjunction with the appendix.
[0023] The figures and preferred embodiments further illustrate the present invention in detail.
[0024] like Figure 1-5As shown, a quartz electronic watch with electrostatic induction includes a housing 1, a watch strap 2 connected to the housing 1, and a dial 3 fastened and installed inside the housing 1. The dial 3 is characterized by having a dustproof disc 4 and a positioning disc 5 fitted to its lower end. The positioning disc 5 is equipped with a movement, a gear transmission mechanism, and an electrostatic induction device for neutralizing static electricity outside the movement. The electrostatic induction device includes an insulating structure and conductive mechanisms symmetrically arranged at both ends of the insulating structure. The insulating structure is fixedly installed on the upper surface of the positioning disc 5, and the body 7 of the insulating structure is located in the middle of a square groove 14 located on the side of the dustproof disc 4. The advantage of this design is that the electrostatic induction device transfers internal static electricity to the casing 1 via a conductive mechanism. The casing 1, made of metal, is conductive. When static electricity is present in the internal mechanism, the conductive mechanism near the static point generates an electrode opposite to the static charge, neutralizing it. The opposite electrode generated at the other end of the conductive mechanism is transferred to the casing 1. When static electricity needs to be neutralized, the charge transferred to the casing 1 is conducted to the ground through the conductive device, achieving the function of discharging static electricity without disassembling the casing 1. Because the conductive mechanism transfers electrons through the upper end of the insulating structure, and the body 7 of the insulating structure is located in the middle of the square groove 14 on the side of the dustproof tray 4, it facilitates the transfer of electrons to the outside of the mechanism, preventing any impact on the mechanism during static electricity neutralization.
[0025] Two conductive mechanisms are respectively connected to a conductive plate 6 on the upper surface of the dustproof tray 4. The end of the conductive plate 6 is in contact with the inner side of the housing 1. A positioning mechanism is provided between the dustproof tray 4 and the positioning plate 5.
[0026] The main body 7 is an insulating sleeve with an arc-shaped columnar structure. A first mounting groove 7-1 is provided on the inner end face of the main body 7, and a second mounting groove 7-2 is provided on the outer upper end face of the main body 7. The first mounting groove 7-1 and the second mounting groove 7-2 are connected. A flexible insulating layer 8 is attached to the first mounting groove 7-1. A first conductor sheet 9 is installed in the first mounting groove 7-1 and the second mounting groove 7-2. The first conductor sheet 9 located in the first mounting groove 7-1 is attached to the flexible insulating layer 8. A second conductor sheet 10 is fixedly installed at the end of the first conductor sheet 9 located in the second mounting groove 7-2. The second conductor sheet 10 has an arc-shaped structure and is attached to a third mounting groove 7-3 located on the side end of the main body 7. The end of the second conductor sheet 10 is fixedly connected to one end of the conductive plate 6. The other end of the conductive plate 6 is connected to the housing 1.
[0027] The purpose of providing the second conductor sheet 10 is that when there is static electricity on the outside of the body 7, the static electricity will be neutralized first through the second conductor sheet 10. Therefore, in the case of neutralizing static electricity inside the movement, this application can simultaneously neutralize other static electricity on the outside of the movement.
[0028] The mechanism includes an oscillating integrated circuit, on which a quartz oscillator 11 is mounted. The body 7 is fitted onto the outside of the quartz oscillator 11, with a gap between it and the outer shell of the quartz oscillator 11. The first conductor sheet 9 has a thickness of 0.1 mm to 0.2 mm. The thickness of the conductor sheet is mainly determined by its function and manufacturing process. It needs to be thin enough to avoid introducing excessive resistance or affecting vibration, and large enough to effectively neutralize static electricity. Too thick a conductor sheet may result in excessive capacitance or additional resistance; too thin a conductor sheet may not provide sufficient conductivity.
[0029] The distance between the outer wall of the first conductor sheet 9, installed in the first mounting slot 7-1, and the outer wall of the quartz oscillator 11 is 0.1 mm to 0.5 mm. The conductor sheet needs to be placed at an appropriate distance from the quartz oscillator to ensure that its electric field can effectively neutralize static electricity. Too small a distance may result in insufficient contact between the surface of the conductor sheet and the surface of the oscillator, affecting the static elimination effect. Too large a distance may not provide sufficient electric field strength to neutralize static electricity.
[0030] The purpose of placing the first conductor plate 9 close to the quartz oscillator 11 is to neutralize the static electricity on the surface of the quartz oscillator 11. When static electricity appears on the surface of the quartz oscillator, the first conductor plate 9 located at the upper end of the quartz oscillator 11 introduces the opposite charge through electrostatic induction, thereby neutralizing the static electricity on the surface of the quartz oscillator 11. At the same time, placing the first conductor plate 9 outside the quartz oscillator 11 will not directly contact the vibration structure of the quartz oscillator 11, reducing charge disturbance caused by mechanical force.
[0031] The insulating structure is made of polyurethane. Polyurethane is characterized by high strength and low leakage. It can withstand large stresses without breaking or deforming, and is less affected by external moisture and charge penetration, maintaining stable chemical properties in humid environments.
[0032] The first conductor sheet 9, the second conductor sheet 10, and the conductive plate 6 are made of copper or silver. The conductor sheets should be smoothly polished to avoid scratches affecting the electric field distribution and contact performance. Their thickness and strength are increased through hot-dip plating.
[0033] The flexible insulating layer 8 is made of polydimethylsiloxane, which is biocompatible. The flexible insulating layer provides support for the first conductor sheet 9, which is installed in the first mounting groove 7-1 and the second mounting groove 7-2 by bending. Because the first conductor sheet 9 installed in the first mounting groove 7-1 is relatively thin, its performance is easily compromised by screws or mechanical installation. Therefore, the flexible insulating layer is used to position and install the first conductor sheet 9.
[0034] The ends of the first conductor piece 9 and the second conductor piece 10 are fixedly installed at the connection between the second mounting groove 7-2 and the third mounting groove 7-3 by screws 12. Since the first conductor piece 9 is bent during installation, the portion of the first conductor piece 9 located in the first mounting groove 7-1 is installed first, and then the other end is fixed, which can ensure the stability of its installation.
[0035] The lower end of the main body 7 is provided with a positioning plate 7-4, which is fixedly installed on the positioning disk 5 by screws. The positioning plate 7-4 is not metallic and has no electrical conductivity.
[0036] An insulating plate 13 is provided between the two conductive mechanisms. The insulating plate 13 is provided to prevent the symmetrically arranged electrostatic neutralization devices from connecting, thereby preventing the accumulation of static electricity.
[0037] This application utilizes the principle of electrostatic induction to specifically neutralize static electricity inside the movement, enabling the movement to remain in a stable working environment for a long time and avoiding oscillation stoppage or frequency fluctuation caused by static electricity inside the movement.
[0038] The above description is only one preferred embodiment of the present invention. Ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.
Claims
1. A quartz electronic watch with electrostatic induction, comprising a housing (1), a watch strap (2) connected to the housing (1), and a dial (3) fastened and installed inside the housing (1), characterized in that, The lower end of the dial (3) is fitted with a dustproof disc (4) and a positioning disc (5). The positioning disc (5) is fitted with a movement, a gear transmission mechanism and an electrostatic induction device for neutralizing static electricity outside the movement. The electrostatic induction device includes an insulating structure and conductive mechanisms symmetrically arranged at both ends of the insulating structure. The insulating structure is fixedly installed on the upper surface of the positioning disc (5), and the body (7) of the insulating structure is located in the middle of the square groove (14) on the side of the dustproof disc (4). The two conductive mechanisms are respectively connected to the conductive plate (6) arranged on the upper surface of the dustproof disc (4). The end of the conductive plate (6) is in contact with the inner side of the housing (1). A positioning mechanism is provided between the dustproof disc (4) and the positioning disc (5). The body (7) is an insulating sleeve with an arc-shaped columnar structure. A first mounting groove (7-1) is provided on the inner end face of the body (7), and a second mounting groove (7-2) is provided on the outer upper end face of the body (7). The first mounting groove (7-1) and the second mounting groove (7-2) are connected. A flexible insulating layer (8) is attached to the first mounting groove (7-1), and a first conductor sheet (9) is installed in the first mounting groove (7-1) and the second mounting groove (7-2). The first conductor sheet (9) is snapped into the first mounting groove (7-1) and the second mounting groove (7-2). At the connection of the two mounting slots (7-2), the first conductor piece (9) located in the first mounting slot (7-1) is attached to the flexible insulating layer (8). The end of the first conductor piece (9) located in the second mounting slot (7-2) is fixedly installed with a second conductor piece (10). The second conductor piece (10) has an arc-shaped structure and is snapped into the third mounting slot (7-3) located on the side of the body (7). The end of the second conductor piece (10) is fixedly connected to one end of the conductive plate (6), and the other end of the conductive plate (6) is connected to the housing (1).
2. A quartz electronic watch with electrostatic induction according to claim 1, characterized in that, The mechanism includes an oscillating integrated circuit, on which a quartz oscillator (11) is provided. The body (7) is installed on the outside of the quartz oscillator (11) and there is a gap between the body (7) and the outer shell of the quartz oscillator (11).
3. A quartz electronic watch with electrostatic induction according to claim 2, characterized in that, The first conductor sheet (9) has a thickness of 0.1 mm to 0.2 mm, and the distance between the outer wall of the first conductor sheet (9) installed in the first mounting groove (7-1) and the outer wall of the quartz oscillator (11) is 0.1 mm to 0.5 mm.
4. The quartz electronic watch with electrostatic induction according to claim 1, characterized in that, The insulating structure is made of polyurethane.
5. The quartz electronic watch with electrostatic induction according to claim 2, characterized in that, The first conductor sheet (9), the second conductor sheet (10), and the conductive plate (6) are made of copper or silver.
6. The quartz electronic watch with electrostatic induction according to claim 2, characterized in that, The flexible insulating layer (8) is made of polydimethylsiloxane.
7. The quartz electronic watch with electrostatic induction according to claim 2, characterized in that, The ends of the first conductor piece (9) and the second conductor piece (10) are fixedly installed at the connection between the second mounting groove (7-2) and the third mounting groove (7-3) by screws (12).
8. The quartz electronic watch with electrostatic induction according to claim 1, characterized in that, The lower end of the main body (7) is provided with a positioning plate (7-4), which is fixedly installed on the positioning disk (5) by screw connection.
9. The quartz electronic watch with electrostatic induction according to claim 1, characterized in that, An insulating plate (13) is provided between the two conductive mechanisms.
Citation Information
Patent Citations
Electronic clock with electrostatic induction generator
CN107077098A
Watch, quartz movement thereof and mounting structure of quartz movement
CN118393840A