Combined watch rear cover
By designing a modular watch back cover, using anti-slip strips and screws to achieve tool-free disassembly, and enhancing aesthetics with LED lights and colored paper, the design solves the problems of existing watch back covers requiring tools and having limited color options, thus improving both convenience and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JINGSHI OPTICAL CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
Existing watch back covers require external tools for installation and removal, and come in only one color, resulting in inconvenience and poor aesthetics.
A modular watch back cover was designed, which consists of a glass base, back cover ring, connecting ring, clamping bracket and reset spring. Tool-free disassembly is achieved through anti-slip strips and screws, and the aesthetics are enhanced by LED lights and replaceable colored paper.
It enables tool-free installation and disassembly, improving ease of operation, and enhances aesthetics and practicality through replaceable colored paper and LED lights.
Smart Images

Figure CN224137630U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of watch technology, specifically relating to a combined watch back cover. Background Technology
[0002] A wristwatch, also known as a wristwatch, is a portable timepiece worn on the wrist. Common materials for watch straps include leather, rubber, nylon, and stainless steel. Watch case backs are primarily installed in three ways: pry-open, screw-in, and screw-down. Pry-open cases are made by using a pry tool to open the case back and then pressing it in during assembly. Screw-down cases are tightened by threads, requiring higher standards for materials and opening tools. Screw-down cases are secured and removed using several screws. Some case backs require external tools for installation and removal, making them inconvenient for users without tools, and their color options are often limited. Utility Model Content
[0003] To address the problems mentioned in the background art, this utility model provides a modular watch back cover, which solves the problems that some back covers require external tools for installation and removal, making it inconvenient for users to operate without tools, and that the back cover color is relatively monotonous.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a combined watch back cover, including a glass base, a back cover ring fixedly installed on the top of the glass base, an anti-slip strip fixedly installed on the surface of the back cover ring, a connecting ring provided on the top of the back cover ring, locking blocks fixedly installed at both ends of the surface of the connecting ring, screws provided on the surface of the connecting ring, limit blocks fixedly installed on both sides of the inner wall of the back cover ring, a return spring fixedly installed on the inner wall of the connecting ring, a clamping frame fixedly connected to the bottom of the return spring, a sliding rod fixedly installed on the top of the clamping frame, a hand shell provided on the surface of the connecting ring, and sliding grooves provided on both sides of the inner wall of the hand shell.
[0005] Preferably, connecting brackets are fixedly connected to both ends of the surface of the hand shell, and an LED light is fixedly installed on the inner wall of the rear cover ring. One end of the LED light is provided with a wire, and one end of the wire is provided with a button battery.
[0006] Preferably, both the wire and the button battery are located inside the rear cover ring, and the button battery is electrically connected to the LED light via the wire.
[0007] Preferably, the clamping frame is located inside the connecting ring and is slidably connected to the connecting ring, and the slide rod is located inside the connecting ring and is slidably connected to the connecting ring.
[0008] Preferably, the horizontal position of the limiting block is higher than the thickness of the clamping frame, and the limiting block is located on both sides of the clamping frame.
[0009] Preferably, there are four screws, and the screws are threaded through the connecting ring and the rear cover ring. The surface of the slide groove is set in a semi-circular arc shape, and the locking block is located inside the slide groove and is slidably connected to the slide groove.
[0010] Preferably, the surface of the rear cover ring is configured as a trapezoidal ring, the surface of the anti-slip strip is configured as a semi-cylindrical shape, and the anti-slip strip is evenly laid on the surface of the rear cover ring.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] Users can rotate the glass base by pinching the anti-slip strip to disassemble the glass base and hand cover, and vice versa for installation. The operation is simple and does not require tools for installation and disassembly, improving ease of use. Users can also pinch and pull the clamping frame, place the round colored paper under the clamping frame, and clip it between the limit block and the glass base. After releasing the clamping frame, the elastic force generated by the return spring causes the clamping frame to move downward to clamp and fix the round colored paper. Users can choose to change the back cover to different colors according to their own preferences to enhance the aesthetics of the device. Attached Figure Description
[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional structural diagram of the rear cover ring of this utility model;
[0016] Figure 3 This is a cross-sectional view of the rear cover ring of this utility model;
[0017] Figure 4 This is an enlarged view of utility model A.
[0018] In the diagram: 1. Glass base; 2. Slide; 3. Connecting bracket; 4. Hand housing; 5. Anti-slip strip; 6. Locking block; 7. LED light; 8. Rear cover ring; 9. Limiting block; 10. Connecting ring; 11. Clamping bracket; 12. Return spring; 13. Wire; 14. Slide rod; 15. Screw. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 The present invention provides the following technical solution: a combined watch back cover, including a glass base 1, a back cover ring 8 fixedly installed on the top of the glass base 1, an anti-slip strip 5 fixedly installed on the surface of the back cover ring 8, a connecting ring 10 provided on the top of the back cover ring 8, a locking block 6 fixedly installed at both ends of the surface of the connecting ring 10, a screw 15 provided on the surface of the connecting ring 10, limit blocks 9 fixedly installed on both sides of the inner wall of the back cover ring 8, a return spring 12 fixedly installed on the inner wall of the connecting ring 10, a clamping frame 11 fixedly connected to the bottom of the return spring 12, a sliding rod 14 fixedly installed on the top of the clamping frame 11, a hand shell 4 provided on the surface of the connecting ring 10, and sliding grooves 2 opened on both sides of the inner wall of the hand shell 4.
[0021] In a specific embodiment of this utility model, the user pinches the anti-slip strip 5 and rotates the glass base 1, causing the locking block 6 to rotate inside the slide groove 2. Then, the glass base 1 and the connecting ring 10 are pulled out from the inside of the hand housing 4 for disassembly, and vice versa for installation. The operation is simple and does not require the user to use tools for installation and disassembly, improving the convenience of use. The user pinches the clamping frame 11 and pulls it, then places the circular colored paper under the clamping frame 11, and clamps the two sides of the circular colored paper between the limiting block 9 and the glass base 1. After releasing the clamping frame 11, the elastic force generated by the return spring 12 causes the clamping frame 11 to move downward, clamping and fixing the circular colored paper. According to the user's own preferences, different colored circles can be selected for the back cover to improve the aesthetics of the device.
[0022] In this embodiment: an external watch strap is used to connect to the connecting bracket 3, and a button battery is used to power the LED light 7, so that the different colors of the inner wall of the glass base 1 can be clearly seen at night, making it easier for the user to find and take the device, thus improving the practicality of the device. The screw 15 is turned and disassembled using an external screwdriver, and the connecting ring 10 is removed. The button battery inside the back cover ring 8 is then replaced, and the installation is performed in reverse order. The work is simple and reduces the difficulty of operation.
[0023] The working principle and usage process of this utility model are as follows: After the utility model is installed, the external watch strap is connected to the connecting frame 3. The user pinches the anti-slip strip 5 and rotates the glass base 1, causing the locking block 6 to rotate inside the sliding groove 2. Then, the glass base 1 and the connecting ring 10 are pulled out from the inside of the hand shell 4 for disassembly. The reverse is also true for installation. No tools are needed for installation and disassembly. The user pinches the clamping frame 11 and pulls it, then places the circular colored paper under the clamping frame 11, and clamps the two sides of the circular colored paper between the limiting block 9 and the glass base 1. The clamp is then released. After the holder 11 is in place, the spring force generated by the return spring 12 causes the holder 11 to move downwards, clamping and fixing the circular colored paper. Users can choose to replace the circular paper with different colors on the back cover according to their own preferences. Powered by a button battery, the LED light 7 is lit up, making the different colors of the inner wall of the glass base 1 clearly visible at night, making it easier for users to find and take the device, thus improving its practicality. Use an external screwdriver to rotate and disassemble the screw 15, remove the connecting ring 10, and replace the button battery inside the back cover ring 8. Conversely, install the back cover ring 8.
[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A combined watch back, comprising a glass base (1), characterized in that: A rear cover ring (8) is fixedly installed on the top of the glass base (1). An anti-slip strip (5) is fixedly installed on the surface of the rear cover ring (8). A connecting ring (10) is provided on the top of the rear cover ring (8). A locking block (6) is fixedly installed on both ends of the surface of the connecting ring (10). A screw (15) is provided on the surface of the connecting ring (10). Limiting blocks (9) are fixedly installed on both sides of the inner wall of the rear cover ring (8). A return spring (12) is fixedly installed on the inner wall of the connecting ring (10). A clamping frame (11) is fixedly connected to the bottom of the return spring (12). A sliding rod (14) is fixedly installed on the top of the clamping frame (11). A hand shell (4) is provided on the surface of the connecting ring (10). Sliding grooves (2) are opened on both sides of the inner wall of the hand shell (4).
2. A combination watch back cover according to claim 1, wherein: Connecting brackets (3) are fixedly connected to both ends of the surface of the hand shell (4). An LED light (7) is fixedly installed on the inner wall of the rear cover ring (8). A wire (13) is provided at one end of the LED light (7), and a button battery is provided at one end of the wire (13).
3. A combined watch back cover according to claim 2, characterized in that: The wire (13) and the button battery are both located inside the rear cover ring (8), and the button battery is electrically connected to the LED light (7) via the wire (13).
4. The combination watch back cover of claim 1, wherein: The clamping frame (11) is located inside the connecting ring (10), and the clamping frame (11) is slidably connected to the connecting ring (10). The slide rod (14) is located inside the connecting ring (10), and the slide rod (14) is slidably connected to the connecting ring (10).
5. The combination watch back cover of claim 1, wherein: The horizontal position of the limiting block (9) is higher than the thickness of the clamping frame (11), and the limiting block (9) is located on both sides of the clamping frame (11).
6. The combination watch back cover of claim 1, wherein: The number of screws (15) is four, and the screws (15) pass through the connecting ring (10) and are threadedly connected to the rear cover ring (8). The surface of the slide groove (2) is set in a semi-circular arc shape. The locking block (6) is located inside the slide groove (2), and the locking block (6) is slidably connected to the slide groove (2).
7. The combination watch back cover of claim 1, wherein: The surface of the rear cover ring (8) is configured as a trapezoidal ring, and the surface of the anti-slip strip (5) is configured as a semi-cylindrical shape, and the anti-slip strip (5) is evenly laid on the surface of the rear cover ring (8).