Mobile phone back cover mounting and dismounting device

Abstract

This utility model relates to a mounting and dismounting device for a mobile phone back cover accessory. It comprises a base plate and a cover, with a mounting and dismounting assembly between the cover and the base plate. The assembly includes a connecting rod, a limiting block, a guide block, and multiple limiting sliders. The cover has an inner cavity containing a first guide rod. Each limiting slider is slidably connected to its corresponding first guide rod. Each first guide rod is fitted with a first compression spring, and each limiting slider has a locking block. The locking block moves across the limiting block or guide block through the pressing of the cover, the sliding engagement between the limiting slider and the first guide rod, the continuous force exerted by the first compression spring on the limiting slider, and the pressure from the first guide slope. After the guide block and the limiting block are pressed together, the locking block disengages from the limiting block through the sliding engagement between the limiting slider and the first guide rod, the continuous force exerted by the first compression spring on the limiting slider, and the guidance of the lower guide cone surface. This utility model has an ingenious structure and is convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone back cover attachment and removal, and in particular to a device for attaching and removing mobile phone back cover attachments. Background Technology

[0002] With the widespread adoption of smartphones and the growing demand for personalization, users are increasingly inclined to install various accessories on the back of their phones, such as decorations, ring clips, and lanyards, to enhance the phone's recognizability, portability, or aesthetics. Currently, the most common installation methods for phone back cover accessories on the market include adhesive, snap-on, and integrated or non-removable types.

[0003] Existing phone back cover charms, regardless of the installation method, generally suffer from problems such as insecure fixation, easy detachment, inconvenient installation and removal, easy damage to the phone surface, or lack of flexibility. Therefore, there is a need to develop a dedicated installation and removal device that is structurally reasonable, easy to operate, reliably connected, and easy to replace charms, in order to meet users' growing demand for personalized phone accessories. Summary of the Invention

[0004] The purpose of this utility model is to provide a device for installing and removing mobile phone back cover pendants. The device has a clever structure and can quickly install or remove mobile phone pendants, greatly improving the flexibility of mobile phone pendant installation and making it convenient and practical.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a base plate that can be installed on the back cover of a mobile phone, and a cover set above the base plate for installing a pendant. A mounting and dismounting assembly is provided between the cover and the base plate to control the connection or detachment of the cover from the base plate. The mounting and dismounting assembly includes a connecting rod set on the base plate and coaxially with the base plate, a limiting block set at the top of the connecting rod, a guide block slidably set on the connecting rod along its axis, and multiple limiting sliders relatively set inside the cover. The diameter of the limiting block is larger than the diameter of the connecting rod. The cover has an inner cavity, and within the inner cavity are first guide rods distributed circumferentially along the axis of the cover and corresponding one-to-one with each limiting slider. Each first guide rod is horizontally set and its extension direction is perpendicular to the axis of the cover. Each limiting slider is slidably connected to its corresponding first guide rod. Each first guide rod is fitted with a first compression spring, and the two ends of the first compression spring respectively act on... On the inner wall of the limiting slider and the inner cavity, each limiting slider is provided with a locking block integrally formed with the limiting slider. The locking block is provided with a first guide slope and a horizontally set stop surface. The locking block passes over the limiting block by the pressing down of the cover, the sliding engagement between the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the pressure of the first guide slope on the limiting block, and is then placed between the limiting block and the guide block. The guide block is provided with a lower guide cone surface. The locking block passes over the guide block by the pressing down of the cover, the sliding engagement between the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the pressure of the first guide slope on the guide block. After passing over the guide block, the locking block moves the guide block upward by lifting the cover. After the guide block and the limiting block are pressed together, the locking block disengages from the limiting block by the sliding engagement between the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the guidance of the lower guide cone surface.

[0006] Furthermore, the guide block is also provided with an upper guide cone surface, and the bottom of the limiting block is provided with a positioning groove corresponding to the upper guide cone surface. During the lifting process of the guide block, the upper guide cone surface lifts and limits the guide block by interlocking with the positioning groove.

[0007] Furthermore, one end of each first guide rod is fixed to the inner wall of the inner cavity, and the other end of each first guide rod is provided with a first locking plate. The limiting slider is provided with a first sliding groove for the first guide rod to slide and a second sliding groove for the first locking plate to slide. The first sliding groove and the second sliding groove are connected. The limiting slider is slidably connected to the first guide rod through the sliding cooperation between the first sliding groove and the first guide rod and the continuous force of the first compression spring, and is slidably limited by the cooperation of the first locking plate and the second sliding groove.

[0008] Furthermore, the aforementioned cover is provided with multiple lifting grooves circumferentially distributed along the axis of the cover. The axis of each lifting groove is parallel to the axis of the cover. One end of each lifting groove is set on the cover, and the other end of each lifting groove extends along the axis of the lifting groove to the bottom of the cover. The lower end of the cover is provided with a lower cover plate, and the lower cover plate is provided with lifting through holes communicating with each lifting groove. The bottom plate is provided with positioning rods corresponding to each lifting groove. Each positioning rod passes through the lifting through hole and extends into the lifting groove. One end of each positioning rod extending into the lifting groove is provided with a second locking plate. The diameter of the second locking plate is larger than the diameter of the lifting through hole. A second compression spring is provided between each second locking plate and the upper bottom surface of the lifting groove. The two ends of the second compression spring act on the second locking plate and the bottom of the upper groove of the lifting groove, respectively. After the locking block crosses the limiting block, the stop surface on the locking block is pressed against the bottom surface of the limiting block by the continuous force of the second compression spring, and after crossing the locking block and the guide block, it drives the guide block to be lifted.

[0009] Furthermore, the aforementioned cover is provided with a groove for installing a hanging accessory, the groove being located on the outer wall of the cover and coaxially arranged with the cover.

[0010] This utility model has positive effects: (1) By setting up the mounting and dismounting components, the locking block is locked by the pressing down of the cover, the sliding cooperation between the limiting slider and the first guide rod, the continuous force of the first compression spring on the limiting slider, and the pressing of the first guide slope against the limiting block. This allows the cover and the hanging parts on the cover to be connected to the base plate. When unlocking is required, the cover only needs to be pressed again, so that the locking block passes through the guide block by the pressing down of the cover, the sliding cooperation between the limiting slider and the first guide rod, the continuous force of the first compression spring on the limiting slider, and the pressing of the first guide slope against the guide block. Then the cover is lifted, and the cover lifts the guide block during the lifting process, thereby causing the locking block to separate from the guide block and the limiting block, thus achieving the separation of the cover from the base plate. This quick and efficient detachable method effectively solves the problems of unstable installation and inconvenient disassembly in the prior art, greatly improving the efficiency of cover installation and disassembly, and also greatly improving the stability of the cover after installation. The structure is ingenious, convenient and practical.

[0011] (2) This utility model uses an upper guide cone surface and a positioning groove. The upper guide cone surface engages with the positioning groove during the upward movement of the guide block, ensuring the centering and stability of the guide block during the lifting process and when it contacts the limiting block. At the same time, it effectively prevents the guide block from tilting or getting stuck, making the entire unlocking action smoother and more reliable, and improving the service life of the device.

[0012] (3) Through the cooperation of the first slide groove, the second slide groove, the first guide rod, and the first clamping plate, this utility model not only ensures that the limiting slider can slide smoothly in the predetermined direction, but also precisely limits the sliding stroke of the limiting slider through the cooperation of the first clamping plate and the second slide groove. At the same time, it prevents the limiting slider from moving excessively under the action of the spring or even falling off the first guide rod, thereby enhancing the structural stability and durability of the entire loading and unloading assembly.

[0013] (4) By setting a second compression spring, the present invention provides continuous elastic force to ensure that the locking block can be tightly pressed against the bottom surface of the limiting block after locking, eliminating shaking and enhancing the firmness of the connection. At the same time, the setting of the second compression spring provides guidance and power for the pressing and popping of the cover, so that the cover can automatically rebound a part after being pressed to indicate that the locking is completed, and can automatically pop up after being pressed a second time when unlocking. In addition, the cooperation between the positioning rod and the lifting groove also plays a role in auxiliary positioning and anti-rotation, making the combination of the cover and the base plate more precise, convenient and efficient.

[0014] (5) This utility model provides a unified installation interface for various hanging parts by setting a buckle groove on the buckle cover, which facilitates the quick installation and disassembly of hanging parts and buckle covers, and is efficient and convenient. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the overall structure of the disassembly device for the mobile phone back cover holder in this utility model; Figure 2 This is a cross-sectional view of the overall structure of the cover and the base plate after they are connected in this utility model; Figure 3 This is a side sectional view of the disassembly device for the mobile phone back cover holder in this utility model; Figure 4 This is a cross-sectional view of the overall structure of the present invention when the cover is detached from the base plate; Figure 5 This is a schematic diagram of the overall structure of the snap-on cover in this utility model; Figure 6 This is a schematic diagram of the overall structure of the lower cover plate in this utility model; Figure 7 This is a schematic diagram of the overall structure of the limiting slider in this utility model; Figure 8 This is a schematic diagram of the overall structure of the guide block in this utility model; Figure 9 This is a schematic diagram of the overall structure of the bottom plate in this utility model; The attached figures are labeled as follows: 1. Cover, 10. Inner cavity, 11. Locking groove, 12. Lifting groove, 13. Second compression spring, 2. Base plate, 21. Positioning rod, 22. Second clamping plate, 3. Loading and unloading assembly, 31. Connecting rod, 32. Limiting block, 321. Positioning groove, 33. Guide block, 331. Upper guide cone, 332. Lower guide cone, 34. Limiting slider, 341. First slide groove, 342. First guide rod, 35. First clamping plate, 351. First compression spring, 36. Locking block, 37. First guide slope, 371. Stop surface, 372. Lower cover plate, 4. Lifting through hole, 41. Detailed Implementation

[0016] See Figures 1 to 9 This utility model has a base plate 2 that can be installed on the back cover of a mobile phone, and a cover 1 that is disposed above the base plate 2 and can be used to install a pendant. A mounting and dismounting assembly 3 is provided between the cover 1 and the base plate 2 to control the connection or disengagement of the cover 1 from the base plate 2. The mounting and dismounting assembly 3 includes a connecting rod 31 disposed on the base plate 2 and coaxially arranged with the base plate 2, a limiting block 32 disposed at the top of the connecting rod 31, a guide block 33 slidably disposed on the connecting rod 31 along its axis, and a plurality of limiting sliders 34 disposed opposite to each other within the cover 1. The diameter of block 32 is larger than the diameter of connecting rod 31. The cover 1 has an inner cavity 10. Within the inner cavity 10, first guide rods 35 are circumferentially distributed along the axis of the cover 1 and correspond one-to-one with each limiting slider 34. Each first guide rod 35 is horizontally positioned and its extension direction is perpendicular to the axis of the cover 1. Each limiting slider 34 is slidably connected to its corresponding first guide rod 35. Each first guide rod 35 is fitted with a first compression spring 36. The two ends of the first compression spring 36 act on the limiting slider 34 and the inner wall of the inner cavity 10, respectively. Each component is equipped with a locking block 37 integrally formed with the limiting slider 34. The locking block 37 has a first guide slope 371 and a horizontally arranged stop surface 372. The locking block 37 passes over the limiting block 32 after being pressed down by the cover 1, the sliding engagement between the limiting slider 34 and the first guide rod 35, the continuous force applied to the limiting slider 34 by the first compression spring 36, and the pressure of the first guide slope 371 against the limiting block 32, and is placed between the limiting block 32 and the guide block 33. The guide block 33 has a lower guide cone surface 332. The locking block 37 passes over the limiting block 32 after being pressed down by the cover 1, the sliding engagement between the limiting slider 34 and the first guide rod 35, the continuous force applied to the limiting slider 34 by the first compression spring 36, and the pressure of the first guide slope 371 against the limiting block 32. 4. The sliding engagement with the first guide rod 35, the continuous force applied by the first compression spring 36 to the limiting slider 34, and the pressing of the first guide slope 371 against the guide block 33 cause the locking block 37 to pass over the guide block 33. After passing over the guide block 33, the locking block 37 moves the guide block 33 upward by lifting the cover 1. After the guide block 33 presses against the limiting block 32, the sliding engagement of the limiting slider 34 with the first guide rod 35, the continuous force applied by the first compression spring 36 to the limiting slider 34, and the guiding of the lower guide cone surface 332 cause the locking block 37 to pass over the guide block 33 and the limiting block 32 and then disengage from the limiting block 32.

[0017] The guide block 33 is also provided with an upper guide cone surface 331, and the bottom of the limiting block 32 is provided with a positioning groove 321 corresponding to the upper guide cone surface 331. During the lifting process of the guide block 33, the upper guide cone surface 331 lifts and limits the guide block 33 by interlocking with the positioning groove 321.

[0018] One end of each first guide rod 35 is fixed to the inner wall of the inner cavity 10, and the other end of each first guide rod 35 is provided with a first locking plate 351. The limiting slider 34 is provided with a first sliding groove 341 for the first guide rod 35 to slide and a second sliding groove 342 for the first locking plate 351 to slide. The first sliding groove 341 and the second sliding groove 342 are connected. The limiting slider 34 is slidably connected to the first guide rod 35 through the sliding cooperation between the first sliding groove 341 and the first guide rod 35 and the continuous force of the first compression spring 36, and is slidably limited by the cooperation of the first locking plate 351 and the second sliding groove 342.

[0019] The cover 1 has multiple lifting grooves 12 circumferentially distributed along its axis. The axis of each lifting groove 12 is parallel to the axis of the cover 1. One end of each lifting groove 12 is attached to the cover 1, and the other end extends along its axis to the bottom of the cover 1. The lower end of the cover 1 has a lower cover plate 4 with lifting through holes 41 communicating with each lifting groove 12. The base plate 2 has positioning rods 21 corresponding to each lifting groove 12. Each positioning rod 21 passes through the lifting through hole 41 and extends into the lifting groove 12. Each positioning rod 21 has a second locking plate 22 at one end extending into the lifting groove 12. The diameter of the second locking plate 22 is larger than the diameter of the lifting through hole 41. A second compression spring 13 is provided between each second locking plate 22 and the upper bottom surface of the lifting groove 12. The two ends of the second compression spring 13 act on the second locking plate 22 and the upper bottom of the lifting groove 12 respectively. After the locking block 37 passes over the limiting block 32, the stop surface 372 on the locking block 37 is pressed against the bottom surface of the limiting block 32 by the continuous force of the second compression spring 13. After passing over the locking block 37 and the guide block 33, the guide block 33 is lifted.

[0020] The cover 1 is provided with a buckle groove 11 for installing the hanging parts. The buckle groove 11 is provided on the outer wall of the cover 1 and is coaxial with the cover 1.

[0021] The working principle of this utility model is as follows: During use, the base plate 2 is installed inside the back cover of the mobile phone. The user first attaches the pendant to the buckle slot 11 of the cover 1. Then, the user presses down the cover 1 by overcoming the continuous force of the second spring 13. During this pressing process, the locking block 37, through the pressing of the cover 1, the sliding engagement of the limiting slider 34 and the first guide rod 35, the continuous force of the first spring 36 on the limiting slider 34, and the pressure of the first guide slope 371 against the limiting block 32, passes over the limiting block 32 and is positioned between the limiting block 32 and the guide block 33. The stop surface 372 on the locking block 37, through the continuous force of the second spring 13, presses against the bottom surface of the limiting block 32, ensuring the connection between the cover 1 and the base plate 2 while preventing separation. When the cover 1 needs to be removed, simply press the cover 1 again, and the locking block 37 will pass through the cover 1. The downward pressure, the sliding engagement of the limiting slider 34 and the first guide rod 35, the continuous force applied to the limiting slider 34 by the first compression spring 36, and the pressing of the first guide inclined surface 371 against the guide block 33 allow the locking block 37 to pass over the guide block 33. After passing over the guide block 33, the locking block 37 moves the guide block 33 upward by lifting the cover 1. After the guide block 33 presses against the limiting block 32, the sliding engagement of the limiting slider 34 and the first guide rod 35, the continuous force applied to the limiting slider 34 by the first compression spring 36, and the guiding of the lower guide cone surface 332 allow it to pass over the guide block 33 and the limiting block 32 before disengaging from the limiting block 32. This effectively solves the problem of easy detachment and inconvenient disassembly of the hanging parts on the back cover of the mobile phone in the prior art. Through the connection between the cover 1 and the connecting rod 31 on the base plate 2, the efficiency of quick installation and disassembly between the cover 1 and the base plate 2 is greatly improved. At the same time, the stability of the connection between the hanging part and the back cover of the mobile phone is also guaranteed. The structure is ingenious, convenient and practical.

[0022] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. 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 device for attaching and removing a mobile phone back cover pendant, comprising a base plate that can be mounted on a mobile phone back cover, and a snap cover disposed above the base plate for attaching the pendant, characterized in that: A loading and unloading assembly for controlling the connection or disconnection of the cover and the base plate is provided between the cover and the base plate. The assembly includes a connecting rod mounted on the base plate and coaxially with it, a limiting block at the top of the connecting rod, a guide block slidably mounted on the connecting rod along its axis, and multiple limiting sliders disposed opposite each other within the cover. The diameter of the limiting block is larger than the diameter of the connecting rod. The cover has an inner cavity containing first guide rods circumferentially distributed along the cover's axis and corresponding to each limiting slider. Each first guide rod is horizontally positioned and its extension direction is perpendicular to the cover's axis. Each limiting slider is slidably connected to its corresponding first guide rod. Each first guide rod is fitted with a first compression spring, the two ends of which act on the limiting slider and the inner wall of the inner cavity, respectively. Each limiting slider is provided with a corresponding limiting slider... A one-piece molded locking block has a first guide slope and a horizontally set stop surface. The locking block passes over the limiting block by the pressing down of the cover, the sliding engagement of the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the pressure of the first guide slope against the limiting block. It is then positioned between the limiting block and the guide block. The guide block has a lower guide cone surface. The locking block passes over the guide block by the pressing down of the cover, the sliding engagement of the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the pressure of the first guide slope against the guide block. After passing over the guide block, the locking block moves upward by lifting the cover. After the guide block and the limiting block are pressed together, the locking block disengages from the limiting block by the sliding engagement of the limiting slider and the first guide rod, the continuous force applied to the limiting slider by the first compression spring, and the guidance of the lower guide cone surface.

2. The mounting and dismounting device for a mobile phone back cover accessory according to claim 1, characterized in that: The guide block is also provided with an upper guide cone surface, and the bottom of the limiting block is provided with a positioning groove corresponding to the upper guide cone surface. During the lifting process of the guide block, the upper guide cone surface lifts and limits the guide block by interlocking with the positioning groove.

3. The mounting and dismounting device for a mobile phone back cover accessory according to claim 2, characterized in that: One end of each first guide rod is fixed to the inner wall of the inner cavity, and the other end of each first guide rod is provided with a first locking plate. The limiting slider is provided with a first sliding groove for the first guide rod to slide and a second sliding groove for the first locking plate to slide. The first sliding groove and the second sliding groove are connected. The limiting slider is slidably connected to the first guide rod through the sliding cooperation between the first sliding groove and the first guide rod and the continuous force of the first compression spring, and is slidably limited by the cooperation of the first locking plate and the second sliding groove.

4. The mounting and dismounting device for a mobile phone back cover accessory according to claim 3, characterized in that: The cover has multiple lifting grooves circumferentially distributed along its axis. The axis of each lifting groove is parallel to the axis of the cover. One end of each lifting groove is attached to the cover, and the other end extends along its axis to the bottom of the cover. The lower end of the cover has a lower cover plate with lifting through holes communicating with each lifting groove. The bottom plate has positioning rods corresponding to each lifting groove. Each positioning rod passes through the lifting through hole and extends into the lifting groove. One end of each positioning rod extending into the lifting groove has a second locking plate with a diameter larger than the diameter of the lifting through hole. A second compression spring is provided between each second locking plate and the upper bottom surface of the lifting groove. The two ends of the second compression spring act on the second locking plate and the bottom of the upper groove of the lifting groove, respectively. After the locking block crosses the limiting block, the stop surface on the locking block is pressed against the bottom surface of the limiting block by the continuous force of the second compression spring. After crossing the locking block and the guide block, the stop surface on the locking block lifts the guide block.

5. The mounting and dismounting device for a mobile phone back cover accessory according to claim 4, characterized in that: The cover is provided with a groove for installing a hanging item. The groove is located on the outer wall of the cover and is coaxial with the cover.

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