A notebook with a calculator
By designing a detachable calculator module and solar power, the problems of non-detachable calculators and non-replaceable batteries were solved, achieving product maintainability and environmental friendliness, and reducing usage costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHENHAI CHENGDI STATIONERY
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-31
AI Technical Summary
The existing calculator and notebook cover are fixed as a single, non-removable unit, and the non-replaceable battery renders the product unusable, failing to meet user needs.
The design features a detachable calculator module with a quick-release structure and solar panel power supply, enabling the calculator module to be detachable and rechargeable, allowing users to replace the batteries themselves.
Extend product life cycle, reduce usage costs, meet environmental protection requirements, and increase product added value.
Smart Images

Figure CN224576387U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of paper notebook technology, specifically relating to a notebook with a calculator. Background Technology
[0002] Currently, there are products on the market that directly attach calculators to the cover of notebooks. These structures typically use adhesive, screws, or a one-piece molding process to embed the calculator into a pre-drilled recess in the cover, forming an inseparable unit. For power, they usually use a built-in button battery sealed inside the calculator, which the user cannot replace. Once the battery is depleted, the entire calculator becomes unusable and must be discarded along with the cover.
[0003] Therefore, based on some of the situations in the prior art described above, this application has made further designs and improvements. Utility Model Content
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution.
[0005] A notebook with a built-in calculator includes a cover and a calculator module. The calculator module has a built-in battery. The cover has a mounting groove, and the mounting groove has sliding grooves extending in the Y direction on its two side walls along the X direction. The calculator module has limiting protrusions on both sides that slide with the sliding grooves. A quick-release structure is also provided between the calculator module and the mounting groove. The quick-release structure includes a locking block and a locking groove. The locking block is located on the back of the calculator module, and the locking groove extends through the bottom of the mounting groove. The locking block can engage with the locking groove in a locked position or disengage from the locking groove to unlock it, thereby detachably fixing the calculator module to the cover. This allows the user to remove the entire calculator module to replace the battery. The calculator module can be removed as a whole, and the user can replace the battery without tools, significantly extending the product life cycle and reducing usage costs.
[0006] In a preferred embodiment of a notebook with a calculator, the calculator module has a groove on its back. The locking block is hinged to the side wall of the groove along the Y-axis near the center of the notebook via a torsion spring shaft. The other side of the locking block has a limiting protrusion. The groove, corresponding to the limiting protrusion, has a limiting space for accommodating the limiting protrusion and a stop to prevent the limiting protrusion from disengaging from the limiting space. An elastic pad is provided between the groove and the locking block. The torsion spring shaft and the elastic pad together provide a retaining force for the locking block to protrude from the surface of the calculator module. The torsion spring shaft and the elastic pad ensure that the locking block always protrudes, and the locking groove ensures that the calculator module is securely fixed and easy to disassemble—it can be installed with a push and removed with a press, improving operational convenience.
[0007] In a preferred embodiment of a notebook with a calculator, the locking block has a guide ramp at its leading edge near the center of the notebook along the Y direction, and the top of the locking block is inclined towards the surface of the calculator module. The guide ramp automatically presses the locking block back into the groove during installation, eliminating the need for manual pressing by the user and simplifying installation.
[0008] In a preferred embodiment of a notebook with a calculator, the calculator module has a solar panel on its front side, and the battery is a rechargeable button cell battery. The solar panel is electrically connected to the rechargeable button cell battery to power the calculator and charge the battery. The solar panel can charge the battery, avoiding frequent battery replacements.
[0009] Compared with existing technologies, this application has the following beneficial technical effects: the calculator module can be completely removed, allowing users to replace the battery without tools, significantly extending the product life cycle and reducing usage costs. Furthermore, the detachable calculator module design prevents the entire device from being scrapped due to battery depletion or laptop abandonment, meeting environmental protection requirements and enhancing brand value. Attached Figure Description
[0010] Figure 1 This is a 3D image of the notebook.
[0011] Figure 2 A 3D model of a notebook (without a calculator module).
[0012] Figure 3 This is a structural diagram of a notebook with its cover open.
[0013] Figure 4 This is a structural diagram of the notebook at the assembly slot.
[0014] Figure 5 3D for the calculator module Figure 1 .
[0015] Figure 6 3D for the calculator module Figure 2 .
[0016] Figure 7 This is a cross-sectional view of the calculator module at the groove.
[0017] The following is an explanation of the reference numerals in the attached figures: 100. Cover shell; 101. Assembly slot; 102. Slide groove; 103. Locking slot; 104. Flared mouth; 105. Damping protrusion; 110. Inner pages; 200. Calculator module; 201. Limiting protrusion; 202. Groove; 203. Limiting space; 204. Edge guard; 210. Locking block; 211. Torsion spring shaft; 212. Limiting protrusion; 213. Guide slope; 220. Elastic pad; 230. Battery; 240. Solar panel. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0019] In the following embodiments, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0020] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] refer to Figures 1 to 4A notebook with a calculator includes a cover and inner pages 110. The front part of the cover is a cover shell 100, on which a calculator module 200 is provided. The calculator module 200 has a built-in battery 230. The cover shell 100 has a mounting groove 101, and the mounting groove 101 has sliding grooves 102 extending in the Y direction on its two side walls along the X direction. The calculator module 200 has limiting protrusions 201 on both sides that slide in cooperation with the sliding grooves 102. A quick-release structure is also provided between the calculator module 200 and the mounting slot 101. The quick-release structure includes a locking block 210 and a locking groove 103. The locking block 210 is located on the back of the calculator module 200, and the locking groove 103 extends through the bottom of the mounting slot 101. The locking block 210 can engage with the locking groove 103 in the locked position, or disengage from the locking groove 103 in a pressed state to unlock, thereby detachably fixing the calculator module 200 to the cover shell 100. This allows the user to remove the calculator module 200 entirely to replace the battery 230. The calculator module 200 can be completely removed, and the user can replace the battery 230 without tools, significantly extending the product life cycle and reducing usage costs.
[0022] Specifically, refer to Figures 5 to 7 The calculator module 200 has a groove 202 on its back. The locking block 210 is hinged to the side wall of the groove 202 along the Y direction near the center of the notebook via a torsion spring shaft 211. The other side of the locking block 210 has a limiting protrusion 212. The groove 202 has a limiting space 203 for accommodating the limiting protrusion 212 and a stop 204 to prevent the limiting protrusion 212 from disengaging from the limiting space 203. An elastic pad 220 is provided between the groove 202 and the locking block 210. The torsion spring shaft 211 and the elastic pad 220 together provide the retaining force for the locking block 210 to protrude from the surface of the calculator module 200. The torsion spring shaft 211 and the elastic pad 220 can ensure that the locking block 210 always protrudes. The locking groove 103 can ensure that the calculator module 200 is securely fixed and easy to disassemble. It can be installed with a push and disassembled with a press, which improves the convenience of operation. The locking block 210 has a guide slope 213 at its leading edge along the Y direction near the center of the notebook, and the top of the locking block 210 is inclined to the surface of the calculator module 200. The guide slope 213 can automatically press the locking block 210 back into the groove 202 during the installation stage, so the user does not need to press it manually, making installation convenient.
[0023] To further extend the lifespan of the calculator module 200, a solar panel 240 is provided on the front of the calculator module 200. The battery 230 is a rechargeable button cell battery 230. The solar panel 240 is electrically connected to the rechargeable button cell battery 230 to power the calculator and charge the battery 230. The solar panel 240 can charge the battery 230, avoiding frequent battery replacements.
[0024] Furthermore, the slide 102 has a flared opening 104 at its starting end in the Y direction. The flared opening 104 has an flaring angle of 5° to 10°, which can automatically guide the limiting protrusion 201 during insertion, avoiding plastic chipping due to inaccurate initial alignment. The slide 102 also has a semi-circular damping protrusion 105 on its side wall. When the calculator module 200 is pushed to the end, a slight "click" sensation is produced, indicating to the user that it is in place, reducing the problem of the locking block 210 not aligning with the locking groove 103 due to incomplete insertion.
[0025] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.
Claims
1. A notebook with a calculator, comprising a cover case (100) and a calculator module (200), the calculator module (200) having a built-in battery (230), characterized in that, The cover shell (100) is provided with an assembly groove (101), and the assembly groove (101) has sliding grooves (102) extending in the Y direction on both side walls along the X direction; the calculator module (200) has limiting protrusions (201) on both sides that slide in cooperation with the sliding grooves (102). A quick-release structure is also provided between the calculator module (200) and the mounting slot (101). The quick-release structure includes a locking block (210) and a locking groove (103). The locking block (210) is located on the back of the calculator module (200), and the locking groove (103) extends through the bottom of the mounting slot (101). The locking block (210) can engage with the locking groove (103) in the locked position, or exit the locking groove (103) in the pressed state to unlock, thereby detachably fixing the calculator module (200) to the cover shell (100), so that the user can remove the calculator module (200) as a whole to replace the battery (230).
2. The notebook of claim 1, wherein, The calculator module (200) has a groove (202) on its back. The locking block (210) is hinged to the side wall of the groove (202) along the Y direction near the center of the notebook via a torsion spring shaft (211). The other side of the locking block (210) has a limiting protrusion (212). The groove (202) has a limiting space (203) for accommodating the limiting protrusion (212) on the side corresponding to the limiting protrusion (212), and a stop (204) to prevent the limiting protrusion (212) from disengaging from the limiting space (203). An elastic pad (220) is provided between the groove (202) and the locking block (210). The torsion spring shaft (211) and the elastic pad (220) together provide the retaining force for the locking block (210) to protrude from the surface of the calculator module (200).
3. The notebook of claim 2 wherein, The locking block (210) has a guide slope (213) at its front edge along the Y direction near the center of the notebook, and the top of the locking block (210) is inclined to the surface of the calculator module (200).
4. The notebook of claim 1 wherein, The calculator module (200) has a solar panel (240) on its front side. The battery (230) is a rechargeable button cell battery (230). The solar panel (240) is electrically connected to the rechargeable button cell battery (230) to power the calculator and charge the battery (230).