Rear shell adaptation device convenient for assembling wall clock shell

By designing a back cover adapter that facilitates the assembly of the wall clock casing, and utilizing the cooperation of a telescopic spring and a push plate, the problems of cumbersome manual operation and inaccurate assembly in the traditional wall clock assembly process are solved, achieving efficient and precise assembly results and improving the structural stability and aesthetics of the wall clock.

CN224248041UActive Publication Date: 2026-05-15ZHANGZHOU TIANCHEN WATCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional wall clock casing assembly relies on manual operation, resulting in cumbersome operation steps, high labor and time costs, and inaccurate component assembly, which affects the structural stability and aesthetics of the wall clock.

Method used

A back cover adapter is adopted to facilitate the assembly of the wall clock casing. The second telescopic spring cooperates with the push plate to achieve the slot applicability of casings of different sizes. The stable connection of the components is ensured by the cooperation of the snap block and the first telescopic spring.

Benefits of technology

It improved assembly efficiency, reduced labor and time costs, and achieved precision in component assembly as well as stability and aesthetics in the overall structure of the clock.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224248041U_ABST
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Abstract

The utility model discloses a rear shell adaptive device convenient for assembling a wall clock shell, which relates to the technical field of rear shell adaptive devices, and comprises a shell, an observation opening is formed in the upper end of the shell, an acrylic plate is mounted in the observation opening through glue, a clamping groove is formed in the lower end of the shell, a bottom plate is mounted at the lower end of the shell, and a telescopic adjusting mechanism is mounted on the bottom plate. A clamping mechanism is assembled on the telescopic adjusting mechanism; according to the utility model, through mutual cooperation of the second telescopic spring and the push plate, the device is suitable for housing clamping grooves with different sizes, the versatility of the device is improved, the function of reducing a large amount of manpower and time cost is realized, through mutual cooperation of the clamping block and the first telescopic spring, the stability of the clamped wall clock is facilitated, and the practicability of the device is improved. Therefore, the accuracy of component assembly is improved, the overall structural stability and attractiveness of the wall clock are realized, and finally the problems of tedious operation steps and inaccurate component assembly are solved.
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Description

Technical Field

[0001] This utility model relates to the technical field of back cover adapter devices, and in particular to a back cover adapter device that facilitates the assembly of a wall clock casing. Background Technology

[0002] In the watchmaking industry, wall clocks are widely used in homes, offices, and public areas due to their decorative and practical properties. The quality of the wall clock's casing assembly not only affects the product's aesthetic appearance but also the protection and normal operation of internal components such as the movement. With the diversification of market demand for wall clocks and the continuous improvement of production efficiency requirements, efficient and precise casing assembly technology has become a key focus of the industry.

[0003] In the traditional assembly process, the positioning and fixing of components such as the back cover, base plate, and dial rely heavily on manual operation, using screws or simple clips for fastening. This process is cumbersome, not only consuming a lot of manpower and time, but also the errors in manual operation can easily lead to inaccurate assembly of components, affecting the overall structural stability and aesthetics of the clock. Therefore, it is necessary to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a back cover adapter that facilitates the assembly of a wall clock casing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a back cover adapter for easy assembly of a wall clock casing, comprising a casing, an observation port at the upper end of the casing, an acrylic plate installed in the observation port by adhesive, a slot at the lower end of the casing, and a base plate installed at the lower end of the casing, a telescopic adjustment mechanism installed on the base plate, and a snap-fit ​​mechanism mounted on the telescopic adjustment mechanism.

[0006] Preferably, the telescopic adjustment mechanism includes a fixed block installed at the middle of the upper part of the base plate, and a second telescopic spring is fixedly connected to the middle of each of the four sides of the fixed block, and the other end of each of the second telescopic springs is fixedly connected to one side of the push plate.

[0007] Preferably, L-shaped sliding plates are installed opposite each other on both sides of the push plate, and the push plate is slidably engaged between the L-shaped sliding plates.

[0008] Preferably, each of the L-shaped sliding plates is slidably mounted with a positioning block, and the positioning block is fixedly connected to one end of the push plate.

[0009] Preferably, a fixing groove is fixedly connected to the middle of the upper end of the base plate, and a clock face is fixedly installed in the fixing groove.

[0010] Preferably, the locking mechanism includes a telescopic groove formed on the upper end of the positioning block, a first telescopic spring is installed in the telescopic groove, and a locking block is slidably installed in the telescopic groove, with the locking block located on one side of the telescopic groove and fixed to one end of the first telescopic spring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses the second telescopic spring and the push plate to cooperate with each other, which makes it easy to use the outer shell slots of different sizes, improves the versatility of the device, and thus realizes the function of reducing the consumption of a lot of manpower and time costs. Furthermore, the interlocking block and the first telescopic spring cooperate with each other to facilitate the stability of the wall clock after interlocking, improve the accuracy of component assembly, and thus realize the function of overall structural stability and aesthetics of the wall clock. Finally, it solves the problems of cumbersome operation steps and inaccurate component assembly. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the partial overall three-dimensional structure proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the outer shell proposed in this utility model from a bottom view;

[0016] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the base plate proposed in this utility model;

[0017] Figure 5 This is a side view sectional structural diagram of the present invention;

[0018] Figure 6 This is a schematic diagram showing the installation position of the second telescopic spring proposed in this utility model.

[0019] The numbers in the diagram are: 1. Outer shell; 3. Acrylic sheet; 4. Clock dial; 5. Slot; 6. Base plate; 7. Fixing slot; 8. Positioning block; 9. Push plate; 10. Snap-fit ​​block; 11. L-shaped sliding plate; 12. First telescopic spring; 13. Second telescopic spring. Detailed Implementation

[0020] 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.

[0021] Example: See Figure 1-6This utility model discloses a back cover adapter for facilitating the assembly of a wall clock casing. The back cover 1 is made of high-strength engineering plastic, such as polycarbonate (PC). Polycarbonate has excellent impact resistance, effectively resisting collisions during daily use and protecting internal parts. It also possesses excellent heat resistance and weather resistance, adapting to different environmental temperature changes and preventing deformation or cracking due to temperature differences. An observation opening at the upper end of the back cover 1 is used to install an acrylic plate 3, forming an observation opening for displaying the clock face 4, allowing the user to clearly observe the time. The acrylic plate 3 is installed in the observation opening with adhesive. The acrylic plate 3 is made of optical-grade acrylic material, with high transparency and a light transmittance of over 92%, ensuring a clear visual effect and allowing the user to clearly see the clock face from different angles. The acrylic sheet is installed in the observation port with glue. The glue is a high-strength, weather-resistant epoxy resin glue, which ensures that the acrylic sheet is firmly connected to the shell and is not easy to fall off. At the same time, it has good waterproof performance to prevent water from seeping in and affecting the internal parts. The lower end of the shell 1 has a slot 5, and the lower end of the shell 1 is equipped with a base plate 6. The base plate 6 is made of ABS engineering plastic, which has good comprehensive performance, high strength, good toughness and low cost.The base plate, as the fundamental support component of the entire device, supports the clock face 4, telescopic adjustment mechanism, and other components, providing them with a stable mounting platform. Its lower end connects to the outer casing 1 via a slot 5 and a snap-fit ​​mechanism, enabling rapid assembly. The base plate 6 is equipped with a telescopic adjustment mechanism, which, along with a snap-fit ​​mechanism, facilitates the assembly of the clock casing 1 into a single unit. The telescopic adjustment mechanism includes a fixing block installed at the center of the upper part of the base plate 6. Second telescopic springs 13 are fixedly connected to the center of each of the four sides of the fixing block. These second telescopic springs 13 are made of stainless steel spring wire, which possesses excellent corrosion resistance and fatigue resistance, ensuring that the springs are not prone to rust or deformation during long-term use and maintain stable elasticity. One end of the second telescopic spring is connected to the fixing block, and the other end is connected to the push plate 9. The elastic force of the second telescopic spring 13 provides the extension and retraction power for the push plate, realizing the extension and retraction adjustment of the snap-fit ​​mechanism, which facilitates the fixing and stabilization of shells 1 of different sizes; the other end of the second telescopic spring 13 is fixedly connected to one side of the push plate 9. The push plate 9 is made of high-strength engineering plastic, the same material as the shell 1, and has good mechanical strength and wear resistance; the push plate 9 moves in extension and retraction under the action of the second telescopic spring 13, driving the snap-fit ​​mechanism to snap and release the shell; the L-shaped sliding plates 11 installed opposite to each other on both sides provide guidance and support for the movement of the push plate, ensuring the stability and accuracy of the push plate movement; the second telescopic spring 13 and the push plate 9 facilitate the fixing and stabilization of the snap-fit ​​mechanism; the L-shaped sliding plates 11 installed opposite to each other on both sides of the push plate 9 are made of aluminum alloy. The high strength and good processing performance of aluminum alloy enable it to be made into a structurally stable and high-precision L-shaped sliding plate. L-shaped sliding plate; The L-shaped sliding plate is installed on the base plate 6 and is slidably engaged with the push plate 9, which restricts the movement direction of the push plate and makes the push plate slide only in a specific direction, so as to avoid the push plate from deviating or shaking during the movement, thereby ensuring the normal operation of the engagement mechanism; and the push plate 9 is slidably engaged between the L-shaped sliding plates 11, which facilitates the stable movement of the push plate 9.

[0022] In this utility model, positioning blocks 8 are slidably installed on each L-shaped sliding plate 11. The positioning blocks 8 are made of engineering plastic, which has a certain degree of flexibility and wear resistance. The positioning blocks 8 are fixedly connected to one end of the push plate 9. By sliding on the L-shaped sliding plate 11, positioning and fixing of shells 1 of different sizes can be achieved. The surface of the positioning blocks is designed with anti-slip texture to increase the friction with the shell and ensure that the shell will not easily loosen during use. The positioning blocks 8 are all fixedly connected to one end of the push plate 9, which facilitates the fixing of shells 1 of different sizes. A fixing groove 7 is fixedly connected to the middle of the upper end of the base plate 6. The fixing groove 7 is made of ABS. Made of engineering plastic, it is integrally molded with the base plate 6; the fixing groove is set in the middle of the upper part of the base plate for fixing the clock face 4. Its shape and size match the clock face, which can accurately position the clock face and provide stable support for the clock face, ensuring that the clock face will not shake or shift during use; the clock face 4 is fixedly installed in the fixing groove 7, and the clock face 4 is easily and quickly installed through the fixing groove 7; the snap-fit ​​mechanism includes a telescopic groove opened on the upper end of the positioning block 8, in which a first telescopic spring 12 is installed. The first telescopic spring 12 is also made of stainless steel spring wire and has the same material properties as the second telescopic spring 13; the first telescopic spring is installed in the telescopic groove of the positioning block 8, one end of which is connected to the snap-fit ​​block 10, and the other end is fixed to the bottom of the telescopic groove. Through its own elastic force, the snap-fit ​​block can extend and retract within the telescopic groove, achieving snap-fit ​​and release with the outer shell 1 slot 5, thereby ensuring the stability and detachability of the connection between the outer shell and the base plate 6. A snap-fit ​​block 10 is slidably installed in the telescopic groove. The snap-fit ​​block 10 is made of high-strength engineering plastic with a specially treated surface to increase hardness and wear resistance. The snap-fit ​​block 10 is installed in the telescopic groove of the positioning block 8 and can extend or retract into the telescopic groove under the action of the first telescopic spring 12. When installing the outer shell, the snap-fit ​​block 10 extends and inserts into the slot of the outer shell, achieving a firm connection between the outer shell and the base plate. When disassembling, the snap-fit ​​block 10 retracts into the telescopic groove, facilitating the separation of the outer shell from the base plate. The snap-fit ​​block 10 is located on one side of the telescopic groove and fixed to one end of the first telescopic spring 12. The connection between the first telescopic spring 12 and the snap-fit ​​block 10 ensures a stable connection between the outer shell 1 and the base plate 6.

[0023] Working principle: When using this utility model, the clock face 4 and the base plate 6 of the telescopic adjustment mechanism and the snap-fit ​​mechanism installed in the fixed groove 7 are aligned with the lower end of the outer shell 1. By pressing down, the outer shell 1 is made vertical by the chamfer on the upper end of the positioning block 8, thereby causing the positioning block 8 to move inward. The L-shaped sliding plate 11 stabilizes the movement direction of the positioning block 8. At this time, the second telescopic spring 13 is continuously compressed, so that the positioning block 8 is tightly fitted with the inner wall of the outer shell 1. When the outer shell 1 is pressed to a certain position, the snap-fit ​​block 10 compresses the second telescopic spring 13 to retract. Then, when the snap-fit ​​groove 5 is completely aligned with the snap-fit ​​block 10, the second telescopic spring 13 is compressed and retracted. The elastic force of the second telescopic spring 13 causes the locking block 10 to pop out and lock into the slot 5, thereby firmly connecting the base plate 6 and the outer shell 1, completing the assembly of the clock outer shell 1. When disassembly is required, the base plate 6 and the outer shell 1 are manually pushed in opposite directions to overcome the elastic force of the first telescopic spring 12, causing the locking block 10 to retract into the telescopic groove of the positioning block 8, releasing the locking state of the locking block 10 and the slot 5. Then, by pulling the outer shell 1 again, when the outer shell 1 is completely separated from the positioning block 8, the first telescopic spring 12 extends, thereby moving the positioning block 8 to the edge position of the base plate 6, which facilitates the repair or replacement of parts of the clock dial 4.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A back cover adapter for facilitating the assembly of a wall clock casing, comprising a casing (1), characterized in that: An observation port is provided at the upper end of the outer shell (1), and an acrylic plate (3) is installed in the observation port by glue. A slot (5) is provided inside the lower end of the outer shell (1), and a base plate (6) is installed at the lower end of the outer shell (1). A telescopic adjustment mechanism is installed on the base plate (6), and a snap-fit ​​mechanism is assembled on the telescopic adjustment mechanism.

2. The back cover adapter for facilitating the assembly of a wall clock casing according to claim 1, characterized in that: The telescopic adjustment mechanism includes a fixed block installed at the middle of the upper end of the base plate (6). A second telescopic spring (13) is fixedly connected to the middle of all four sides of the fixed block. The other end of the second telescopic spring (13) is fixedly connected to one side of the push plate (9).

3. The back cover adapter for facilitating the assembly of a wall clock casing according to claim 2, characterized in that: The push plate (9) has L-shaped sliding plates (11) installed on both sides opposite each other, and the push plate (9) is slidably engaged between the L-shaped sliding plates (11).

4. The back cover adapter for facilitating the assembly of a wall clock casing according to claim 3, characterized in that: Each of the L-shaped sliding plates (11) is slidably mounted with a positioning block (8), and the positioning block (8) is fixedly connected to one end of the push plate (9).

5. The back cover adapter for facilitating the assembly of a wall clock casing according to claim 2, characterized in that: A fixing groove (7) is fixedly connected to the middle of the upper end of the base plate (6), and a clock face (4) is fixedly installed in the fixing groove (7).

6. The back cover adapter for facilitating the assembly of a wall clock casing according to claim 4, characterized in that: The locking mechanism includes a telescopic groove opened on the upper end of the positioning block (8), a first telescopic spring (12) is installed in the telescopic groove, and a locking block (10) is slidably installed in the telescopic groove. The locking block (10) is located in the telescopic groove and fixed to one end of the first telescopic spring (12).