Mobile phone front shell with positioning buckle and middle frame combination structure
By setting a positioning buckle structure on the front shell and the middle frame of the phone, and using the cooperation of positioning blocks and limiting blocks, the stability and convenience problems of the existing connection method are solved, realizing a stable connection between the front shell and the middle frame of the phone and simplifying installation and disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YUHE PRECISION TECHNOLOGY CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-24
AI Technical Summary
The existing method of connecting the front cover and the middle frame of mobile phones is prone to breakage, time-consuming and laborious, and has problems such as stripping or glue overflow.
The system employs a positioning snap-fit structure, which uses positioning and limiting blocks on the front shell and middle frame, and utilizes the cooperation of rectangular posts and springs to achieve a stable connection between the front shell and the middle frame.
It avoids breakage caused by barbs or bone insertion, simplifies the installation and disassembly process, and improves the stability and convenience of the connection.
Smart Images

Figure CN224555649U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile phone technology, specifically to a mobile phone front shell and mid-frame combination structure with positioning buckles. Background Technology
[0002] The front cover of a mobile phone is the front part of the phone's casing, usually located at the top. It protects the screen, camera, and other front components. Some front covers also integrate decorative panels, buttons, and other structures. The mid-frame of the phone is located in the connecting area between the front panel and the back cover. It is a frame structure that supports the internal components, protecting them and enhancing the phone's structural strength. Current connection methods between the front cover and mid-frame mainly include: hook-and-slot fixing, screw fixing, and rib-and-groove fixing with adhesive layer. However, hook-and-slot or rib-and-groove methods are prone to breakage during disassembly, essentially rendering the front cover unusable. Screw or adhesive methods are time-consuming and laborious to install and remove, and are prone to stripping or adhesive overflow. Therefore, this paper proposes a front cover and mid-frame combination structure with positioning clips to address these issues. Utility Model Content
[0003] The purpose of this utility model is to provide a mobile phone front shell and mid-frame combination structure with positioning buckles, so as to solve the problems mentioned in the background.
[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: a mobile phone front shell and middle frame combination structure with positioning buckles, including a front shell and a middle frame. One side of the front shell is inserted into one side of the middle frame. Multiple positioning blocks are fixedly connected to the end face of one side wall of the front shell. At the same time, multiple limiting blocks are fixedly connected to one side wall of the middle frame. The positioning blocks are slidably inserted into a pair of limiting blocks. A limiting slot is provided in the limiting blocks. A stop block is provided in the middle of the positioning blocks. Two springs are fixedly connected to one end on both sides of the stop block. At the same time, a rectangular post is fixedly connected to the other end of the two springs. The rectangular post is slidably connected to both sides inside the positioning block. One end of the rectangular post protrudes from both ends of the side walls of the positioning block. The protruding end of the rectangular post is inserted into the limiting slot and fixedly connected.
[0005] Preferably, the left and right side walls of the front shell are provided with two positioning blocks, and the two positioning blocks are symmetrical about the middle of the side walls of the front shell. At the same time, the middle of the upper and lower side walls of the front shell are provided with positioning blocks.
[0006] Preferably, the left and right side walls of the middle frame are provided with four limiting blocks, and the two limiting blocks are paired up. At the same time, the middle part of the upper and lower side walls of the middle frame are provided with two limiting blocks.
[0007] Preferably, the limiting insert has a placement groove, and a positioning insert is slidably connected to the placement groove of a pair of limiting inserts, while the outer wall of the positioning insert is in contact with the inner wall of the placement groove.
[0008] Preferably, the positioning block has slide rails on both sides, and rectangular posts are slidably connected within the slide rails. The positioning block also has openings on both sides, with one end of the rectangular post extending through each opening and slidably connected. A notch is also provided on one side of the rectangular post near the spring. After one end of the rectangular post is inserted into the limiting slot through the opening, the positioning block and the limiting block are fixed in place.
[0009] Preferably, a groove is provided on the inner wall of the slide section, and a T-shaped groove is provided in the groove section. A slider is fixedly connected to one side of the rectangular insert, and a T-shaped block is provided on one side of the slider.
[0010] Preferably, the slider is slidably connected within the groove, and the T-shaped block is slidably connected within the T-shaped groove. The cooperation between the T-shaped block and the T-shaped groove ensures that the rectangular post does not shift during movement.
[0011] Preferably, the component assembly is installed inside the middle frame, and there is a distance between the component assembly and one side of the front shell.
[0012] Compared with the prior art, this utility model has the following advantages:
[0013] This invention features multiple positioning blocks along the sidewall of the front housing and multiple paired limiting blocks along the inner wall of the middle frame, opposite to the positioning blocks. Positioning blocks are inserted into the slots of the limiting blocks, and one end of a rectangular post on each side of the positioning block is inserted into a limiting slot within the limiting block. A stop block is located in the middle of the slide section within the positioning block, and springs are fixedly connected to both sides of the stop block. The other ends of the springs are connected to one end of the rectangular post, and a slot is provided on one side of the rectangular post. This design utilizes the cooperation between the positioning blocks of the front housing and the limiting blocks of the middle frame, avoiding the use of barbs or inserts, preventing breakage of the positioning structure, and also avoiding the inconvenience of screw or adhesive installation and disassembly. Attached Figure Description
[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0015] Figure 1This is a schematic diagram of the overall design of this utility model;
[0016] Figure 2 This is an enlarged schematic diagram of point A in this utility model;
[0017] Figure 3 This is a schematic side sectional view of the present invention;
[0018] Figure 4 This is an enlarged schematic diagram of section B of this utility model;
[0019] Figure 5 This is a side sectional view of the middle frame structure of this utility model;
[0020] Figure 6 This is an enlarged schematic diagram of point C in this utility model;
[0021] Figure 7 This is a side sectional view of the front shell structure of this utility model;
[0022] Figure 8 This is an enlarged schematic diagram of point D in this utility model.
[0023] The labels in the attached diagram represent the following:
[0024] 1. Front housing; 2. Middle frame; 3. Positioning block; 301. Slide rail; 302. Slide groove; 3021. T-slot; 303. Opening; 4. Limiting block; 401. Component placement slot; 402. Limiting slot; 5. Rectangular post; 501. Gap opening; 6. Spring; 7. Sliding block; 701. T-block; 8. Stop block; 9. Component assembly. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-8As shown, this utility model provides a mobile phone front shell and mid-frame assembly structure with positioning buckles, including a front shell 1 and a mid-frame 2. One side of the front shell 1 is inserted into one side of the mid-frame 2. Multiple positioning blocks 3 are fixedly connected to the end face of a ring side wall of the front shell 1. At the same time, multiple limiting blocks 4 are fixedly connected to a ring side wall of the mid-frame 2. The positioning blocks 3 are inserted into a pair of limiting blocks 4 and slidably connected. A limiting slot 402 is provided in the limiting blocks 4. A stop block 8 is provided in the middle of the positioning blocks 3. Two springs 6 are fixedly connected to one end on both sides of the stop block 8. At the same time, a rectangular post 5 is fixedly connected to the other end of the two springs 6. The rectangular post 5 is placed inside the positioning blocks 3 and slidably connected on both sides. One end of the rectangular post 5 protrudes from the two end side walls of the positioning blocks 3. At the same time, the protruding end of the rectangular post 5 is inserted into the limiting slot 402 and fixedly connected.
[0027] In this embodiment, two positioning blocks 3 are provided on both the left and right side walls of the front shell 1, and the two positioning blocks 3 are symmetrical about the middle of the side wall of the front shell 1. At the same time, positioning blocks 3 are provided in the middle of the upper and lower side walls of the front shell 1.
[0028] Furthermore, the left and right side walls of the middle frame 2 are provided with four limiting blocks 4, and the two limiting blocks 4 are paired up. At the same time, the middle of the upper and lower side walls of the middle frame 2 are provided with two limiting blocks 4.
[0029] Furthermore, a placement groove 401 is provided in the limiting insert 4, and a positioning insert 3 is slidably connected to the placement groove 401 in a pair of limiting inserts 4, while the outer wall of the positioning insert 3 is in contact with the inner wall of the placement groove 401.
[0030] Multiple pairs of limiting blocks 4 are provided around the middle frame 2, and the positioning blocks 3 of the front shell 1 are inserted into the placement grooves 401 in a pair of limiting blocks 4. In this way, the front shell 1 and the middle frame 2 are fixed together. At the same time, due to the even distribution of the positioning blocks 3 and the limiting blocks 4 around the circumference, the front shell 1 and the middle frame 2 are tightly connected.
[0031] In this embodiment, the positioning block 3 has slide sections 301 on both sides, and rectangular posts 5 are slidably connected in the slide sections 301. The positioning block 3 has openings 303 on both sides, and one end of the rectangular post 5 is slidably connected through the openings 303. At the same time, a slotting opening 501 is opened on one side of the rectangular post 5 near the spring 6.
[0032] Furthermore, a sliding groove 302 is provided on the inner wall of the slide section 301, and a T-shaped groove 3021 is provided in the sliding groove 302. A slider 7 is fixedly connected to one side of the rectangular insert 5, and a T-shaped block 701 is provided on one side of the slider 7.
[0033] Furthermore, the slider 7 is slidably connected within the slide groove 302, and the T-shaped block 701 is slidably connected within the T-shaped groove 3021.
[0034] After a slider 7 is provided on one side of the rectangular insert 5, the T-shaped block 701 of the slider 7 is inserted into the T-shaped groove 3021 in the slide groove 302, and a slotting opening 501 is provided on one side of the rectangular insert 5. Under the action of external force, the slotting opening 501 can help the rectangular insert 5 move in the slide groove 301. At the same time, the spring 6 can reset the rectangular insert 5, and the T-shaped block 701 and the T-shaped groove 3021 cooperate to prevent the rectangular insert 5 from shifting.
[0035] In this embodiment, a component assembly 9 is installed inside the middle frame 2, and there is a distance between the component assembly 9 and one side of the front shell 1.
[0036] Working principle:
[0037] Multiple positioning blocks 3 are provided around the side wall of the front shell 1, and multiple pairs of limiting blocks 4 are provided around the inner wall of the middle frame 2 opposite to the positioning blocks 3. The positioning blocks 3 are inserted into the placement groove 401 of the limiting blocks 4, and one end of the rectangular inserts 5 provided on both sides of the positioning blocks 3 is inserted into the limiting slot 402 in the limiting blocks 4, so that the positioning blocks 3 and the limiting blocks 4 are fixedly connected together, and the front shell 1 and the middle frame 2 are connected as one unit.
[0038] The positioning block 3 has a stop block 8 in the middle of the slide section 301. Both sides of the stop block 8 are fixedly connected to one end of a spring 6, and the other end of the spring 6 is connected to one end of a rectangular insert 5. The rectangular insert 5 has a slot 501 on one side. When installing the front shell 1, the front shell 1 and the middle frame 2 are placed flat on a table. First, the front shell 1 is placed above the middle frame 2, aligning the positioning block 3 with the paired limiting blocks 4. Since one end of the rectangular insert 5 is at the opening 303 at both ends of the positioning block 3, the insertion of the rectangular insert 5 will block the limiting blocks 4. Since the front shell 1 is relatively thin, tough, and deformable, an external auxiliary tool clip is inserted into the opening 501 to pull the two rectangular inserts 5 closer to the stop block 8, causing the protruding ends of the rectangular inserts 5 to retract. Then, after the positioning insert 3 is inserted into the limiting insert 4, the rectangular inserts 5 are released. Subsequently, under the action of the spring 6, one end of the rectangular insert 5 is inserted into the limiting slot 402 of the limiting insert 4. Finally, the positioning inserts 3 are installed in the limiting insert 4 one by one using clips. When disassembly is required, the rectangular inserts 5 are also pulled out from the limiting slot 402 using clips, and the positioning inserts 3 are disengaged from the limiting insert 4.
[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0040] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.
Claims
1. A mobile phone front shell and mid-frame assembly structure with positioning buckles, comprising a front shell component (1) and a mid-frame component (2), characterized in that: The front shell (1) is inserted into the middle frame (2) on one side. Multiple positioning blocks (3) are fixedly connected to the end face of the side wall of the front shell (1). At the same time, multiple limiting blocks (4) are fixedly connected to the side wall of the middle frame (2). The positioning blocks (3) are inserted into a pair of limiting blocks (4) and slidably connected. A limiting slot (402) is opened in the limiting blocks (4). A stop block (8) is provided in the middle of the positioning blocks (3). Two springs (6) are fixedly connected to one end on both sides of the stop block (8). At the same time, a rectangular post (5) is fixedly connected to the other end of the two springs (6). The rectangular post (5) is placed inside the positioning blocks (3) and slidably connected to both sides. One end of the rectangular post (5) passes through the side walls of both ends of the positioning blocks (3). At the same time, the protruding end of the rectangular post (5) is inserted into the limiting slot (402) and fixedly connected.
2. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 1, characterized in that: The front shell (1) has two positioning blocks (3) on both the left and right side walls, and the two positioning blocks (3) are symmetrical about the middle of the side wall of the front shell (1). At the same time, the front shell (1) has two positioning blocks (3) on the middle of the upper and lower side walls.
3. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 2, characterized in that: The left and right side walls of the middle frame (2) are provided with four limiting blocks (4), and the two limiting blocks (4) are paired up. At the same time, the middle part of the upper and lower side walls of the middle frame (2) is provided with two limiting blocks (4).
4. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 3, characterized in that: The limiting insert (4) has a placement groove (401) and a positioning insert (3) is inserted into the placement groove (401) of the limiting insert (4) and slidably connected. At the same time, the outer wall of the positioning insert (3) is in contact with the inner wall of the placement groove (401).
5. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 1, characterized in that: The positioning block (3) has a slide section (301) on both sides, and a rectangular insert (5) is slidably connected in the slide section (301). The positioning block (3) has an opening (303) on both sides, and one end of the rectangular insert (5) is slidably connected through the opening (303). At the same time, a slotting opening (501) is opened on one side of the rectangular insert (5) near the spring (6).
6. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 5, characterized in that: The inner wall of the slide section (301) is provided with a slide groove (302), and the slide groove (302) is provided with a T-shaped groove (3021). The rectangular insert (5) is fixedly connected to a slider (7) on one side, and the slider (7) is provided with a T-shaped block (701) on one side.
7. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 6, characterized in that: The slider (7) is slidably connected within the slide groove (302), and the T-shaped block (701) is slidably connected within the T-shaped groove (3021).
8. The mobile phone front shell and mid-frame assembly structure with positioning buckle according to claim 1, characterized in that: The component assembly (9) is installed inside the middle frame (2), and there is a distance between the component assembly (9) and one side of the front shell (1).