Press-stud device for mobile phone back cover lanyard

Abstract

The utility model relates to a snap fastener device for mobile phone back cover hanging rope, has bottom cover, be equipped with button cover on bottom cover, be equipped with the rope groove on the outer wall of button cover, button cover elevating connection is in bottom cover, sliding device includes upper sliding block, lower sliding block, limit block, connecting rod and reset spring, be equipped with through -hole on lower sliding block, the both ends of reset spring act between lower sliding block and limit block respectively, the bottom of lower sliding block is equipped with sliding block groove, be equipped with trajectory groove on bottom cover, be equipped with ball bearing between trajectory groove and sliding block groove, trajectory groove includes first arc groove part, second arc groove part and side edge groove part, be equipped with first stop protruding part on first arc groove part, be equipped with second stop protruding part on second arc groove part, first stop protruding part and second stop protruding part all protrude to the side away from limit block, button cover is through the cooperation of ball bearing and first stop protruding part and the sustained force of reset spring to lower sliding block and stretches out mobile phone back cover, and is connected with the hanging rope sleeve. The utility model has the advantages of ingenious structure, convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone back cover lanyards, and in particular to a snap fastener device for mobile phone back cover lanyards. Background Technology

[0002] Phone back cover lanyards come in various colors, materials, and styles, such as braided rope, metal chains, and crystal beads. They can be paired with different phone cases to showcase individuality and fashion sense, serving as a decorative element and making the phone more distinctive. You can hang your phone around your neck, wrist, or crossbody, freeing your hands and making it convenient to carry your phone during outings, sports, and travel, without worrying about it falling or getting lost. The lanyard securely connects the phone to the user, increasing its security and reducing the probability of it being accidentally dropped or forgotten.

[0003] The existing lanyards are usually connected to the press cap on the back of the phone by a loop, but the press cap on the back of the phone takes up a lot of space and is prone to accidental contact that causes the lanyard to fall off, which is very inconvenient. Summary of the Invention

[0004] The purpose of this utility model is to provide a snap fastener for a mobile phone back cover lanyard. It has a clever structure that enables quick connection between the lanyard and the snap fastener. At the same time, the snap fastener can be retracted when not connected to the lanyard to avoid accidental activation. It is convenient and practical.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a bottom cover that can be installed on the back cover of a mobile phone; the upper end of the bottom cover is provided with a button cover coaxially arranged with the bottom cover, and the outer wall of the button cover is provided with a lanyard groove for attaching a lanyard. The lanyard groove is coaxially arranged with the button cover. The button cover is lifted and lowered on the bottom cover by a sliding device. The sliding device includes an upper slider installed inside the button cover, a lower slider slidably connected to the bottom cover, a limiting block arranged on the bottom cover, a connecting rod arranged on the limiting block, and a return spring sleeved on the connecting rod. The lower slider and the upper slider are obliquely slidably connected, and the lower slider is horizontally slidably connected to the bottom cover by the oblique sliding with the upper slider. The horizontal direction of the lower slider is parallel to the connecting rod. The lower slider is provided with a through hole through which the connecting rod can pass. The return spring is arranged between the lower slider and the limiting block, and the two ends of the return spring act between the lower slider and the limiting block respectively. The bottom of the lower slider is provided with a slider groove. The extension direction is perpendicular to the axis of the connecting rod. The bottom cover is provided with a track groove. A ball is provided between the track groove and the slider groove. The ball is slidably disposed in the track groove and the slider groove. The track groove includes a first arc-shaped groove, a second arc-shaped groove, and side grooves provided on both sides of the first arc-shaped groove and the second arc-shaped groove. The two ends of the first arc-shaped groove and the two ends of the second arc-shaped groove are connected through the respective side grooves. The first arc-shaped groove is provided with a first stop protrusion, and the second arc-shaped groove is provided with a second stop protrusion. Both the first stop protrusion and the second stop protrusion protrude towards the side away from the limiting block. The upper end face of the button cover is coplanar with the back cover of the mobile phone after the ball and the second stop protrusion are pressed together. The ball slides into the first stop protrusion through the sliding cooperation of the upper slider and the lower slider, and the sliding cooperation of the lower slider and the bottom cover. The button cover extends out of the back cover of the mobile phone through the cooperation of the ball and the first stop protrusion, and the continuous force of the return spring on the lower slider, and is connected to the lanyard.

[0006] Furthermore, the aforementioned upper slider is provided with a connecting groove opening towards the limiting block. An upper guide slope is provided at the end of the connecting groove away from the limiting block. Two parallel side guide rods, integrally formed with the upper slider, are provided on both sides of the connecting groove. The upper end of each side guide rod is flush with the upper surface of the upper slider, and the lower end of each side guide rod extends obliquely out of the connecting groove. A side guide groove, parallel to the upper guide slope, is formed between the two side guide rods on the same side. The lower slider is provided with a lower guide slope corresponding to the upper guide slope. Side rods, integrally formed with the lower slider and corresponding to each side guide groove, are provided on both sides of the lower slider. Each side rod is slidably disposed within its corresponding side guide groove. The upper end of each side rod is flush with the upper end of the lower slider, and the lower end of each side rod extends out of the lower slider. The bottom cover is provided with a bottom sliding groove corresponding to each side rod. The bottom sliding groove is parallel to the connecting rod, and the bottom of each side rod is slidably disposed within its corresponding bottom sliding groove. The side guide grooves on the upper slider cause the lower slider to slide on the bottom cover by pressing down on each side rod.

[0007] Furthermore, each side rod is provided with a horizontally positioned limiting side rod on its outer side, and each bottom slide groove is provided with a limiting side groove corresponding to the limiting side rod. One end of each limiting side groove is set in the bottom slide groove, and the other end of each limiting side groove extends out of the bottom cover along the extension direction of the bottom slide groove. Each limiting side rod is slidably set in the corresponding limiting side groove.

[0008] Furthermore, the bottom cover is provided with two oppositely arranged connecting seats, each of which is provided with a connecting hole. The extension direction of each connecting hole is perpendicular to the bottom cover. The button cover is provided with a connecting rod that is adapted to each connecting hole. Each connecting rod is slidably connected to the connecting hole through the sliding cooperation of the upper slider and the lower slider.

[0009] Furthermore, the aforementioned upper slider is provided with multiple mounting screw holes, each of which is equipped with a positioning bolt. The axis of each mounting screw hole is set parallel to the connecting rod. The rope groove is provided with a connecting through hole corresponding to each mounting screw hole. Each positioning bolt is provided with a threaded part. After the threaded part on each positioning bolt passes through the connecting through hole, it engages with the mounting screw hole. The upper slider is fixedly installed inside the button cover through the threaded engagement of each threaded part with the mounting screw hole.

[0010] This utility model has positive effects: (1) This utility model provides a cord groove on the button cover for attaching the cord. The button cover and the bottom cover are connected by the oblique sliding of the upper slider and the lower slider to lift and slide. The connection between the upper slider and the button cover, and the sliding connection between the lower slider and the bottom cover, effectively limits the lifting stroke of the button cover. It can also prevent the button cover from separating from the bottom cover after the snap device is connected to the mounting groove on the back cover of the phone. At the same time, a ball is set between the lower slider and the bottom cover. The ball is set in the track groove. The upper end of the button cover is coplanar with the back cover of the phone after the ball and the second stop protrusion are pressed together. The button cover extends out of the back cover of the phone for attaching the cord due to the cooperation between the ball and the first stop protrusion and the continuous force of the return spring on the lower slider. With the setting of the sliding device, it is convenient for the button cover to be attached to the cord after it extends. On the other hand, after the cord is used, the button cover is flush with the back cover of the phone, which can effectively prevent the user from accidentally touching it. It also occupies little space, has a clever structure, and is convenient and practical.

[0011] (2) By setting multiple side guide rods, the present invention forms a side guide groove between each side guide rod. The cooperation between each side rod and the corresponding side guide groove ensures the smooth sliding of the upper and lower sliders. The cooperation between the lower end of each side rod and the bottom slide groove ensures the stable connection between the upper and lower sliders. At the same time, the setting of the bottom slide groove also limits the sliding stroke of the lower slider, thereby limiting the sliding stroke of the upper slider. This further ensures the sliding stroke of the upper and lower sliders and prevents the button cover from falling off, making it convenient and practical.

[0012] (3) This utility model sets a limiting side rod on the side rod and a limiting side groove on the bottom slide groove. The cooperation of each limiting side rod and the limiting side groove further limits the sliding stroke of the lower slide block and the bottom cover. Furthermore, one end of the limiting side groove is set to extend out of the bottom cover. After the button cover slides out, each limiting side rod is pressed against the mounting groove, which further ensures the stability of the button cover and the bottom cover in the mounting groove. It is efficient and convenient.

[0013] (4) This utility model provides a connecting seat on the bottom cover and a connecting hole on the connecting seat, and provides multiple connecting rods on the button cover. The cooperation of each connecting rod and the connecting hole limits the lifting direction of the button cover, ensuring the stability of the button cover during the lifting process. It is convenient and practical.

[0014] (5) By setting a mounting screw hole and a positioning bolt in the mounting screw hole, the upper slider is detachably fixed to the button cover by the threaded part on the positioning bolt and the threaded part of the mounting screw hole, which ensures the stability of the upper slider during the sliding process 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...

[0016] Figure 1 This is an exploded view of the overall structure of the snap fastener device for the mobile phone back cover lanyard in this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the button cover in this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the upper slider in this utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the lower slider in this utility model;

[0020] Figure 5 This is a top view of the overall structure of the lower slider in this utility model;

[0021] Figure 6 This is a schematic diagram of the overall structure of the bottom cover of this utility model;

[0022] Figure 7 This is a schematic diagram of the overall structure of the button cover on the back cover of the mobile phone when it is opened.

[0023] Figure 8 This is a schematic diagram of the overall structure of the button cover on the back cover of the mobile phone when it is closed.

[0024] The attached figures are labeled as follows:

[0025] Bottom cover 1, limiting block 11, track groove 12, first arc-shaped groove 121, second arc-shaped groove 122, side groove 123, first stop protrusion 124, second stop protrusion 125, bottom slide groove 13, limiting side groove 14, connecting seat 15, connecting socket 16, button cover 2, rope groove 21, connecting rod 22, connecting through hole 23, upper slider 3, connecting groove 31, side guide rod 32, side guide groove 33, mounting screw hole 34, lower slider 4, side rod 41, limiting side rod 42, slider groove 43, ball bearing 5, connecting rod 6, return spring 7. Detailed Implementation

[0026] See Figures 1 to 8This utility model has a bottom cover 1 that can be installed on the back cover A of a mobile phone; the upper end of the bottom cover 1 is provided with a button cover 2 coaxially arranged with the bottom cover 1, and the outer wall of the button cover 2 is provided with a rope groove 21 for attaching a lanyard. The rope groove 21 is coaxially arranged with the button cover 2. The button cover 2 is raised and lowered on the bottom cover 1 by a sliding device. The sliding device includes an upper slider 3 installed inside the button cover 2, a lower slider 4 slidably connected to the bottom cover 1, a limiting block 11 provided on the bottom cover 1, a connecting rod 6 provided on the limiting block 11, and a return spring sleeved on the connecting rod 6. Spring 7, the lower slider 4 and the upper slider 3 are obliquely slidably connected, the lower slider 4 is horizontally slidably connected to the bottom cover 1 through the oblique sliding of the upper slider 3, the horizontal direction of the lower slider 4 is parallel to the connecting rod 6, the lower slider 4 is provided with a through hole through which the connecting rod 6 can pass, the return spring 7 is provided between the lower slider 4 and the limiting block 11, the two ends of the return spring 7 act between the lower slider 4 and the limiting block 11 respectively, the bottom of the lower slider 4 is provided with a slider groove 43, the extension direction of the slider groove 43 is perpendicular to the axis of the connecting rod 6, the bottom cover 1 is provided with A track groove 12 is provided, and a ball bearing 5 is provided between the track groove 12 and the slider groove 43. The ball bearing 5 is slidably disposed in the track groove 12 and the slider groove 43. The track groove 12 includes a first arc-shaped groove portion 121, a second arc-shaped groove portion 122, and side groove portions 123 disposed on both sides of the first arc-shaped groove portion 121 and the second arc-shaped groove portion 122. The two ends of the first arc-shaped groove portion 121 and the two ends of the second arc-shaped groove portion 122 are connected through the respective side groove portions 123. The first arc-shaped groove portion 121 is provided with a first stop protrusion 124, and the second arc-shaped groove portion 122 is provided with a first stop protrusion 124. The button cover 2 is provided with a second stop protrusion 125. Both the first stop protrusion 124 and the second stop protrusion 125 protrude to the side away from the limiting block 11. The upper end surface of the button cover 2 is coplanar with the back cover A of the mobile phone after the ball 5 is pressed against the second stop protrusion 125. The ball 5 slides into the first stop protrusion 124 through the sliding cooperation of the upper slider 3 and the lower slider 4, and the sliding cooperation of the lower slider 4 with the bottom cover 1. The button cover 2 extends out of the back cover A of the mobile phone through the cooperation of the ball 5 with the first stop protrusion 124 and the continuous force of the return spring 7 on the lower slider 4, and is connected to the lanyard.

[0027] The upper slider 3 has a connecting groove 31 that opens towards the limiting block 11. One end of the connecting groove 31 away from the limiting block 11 has an upper guide slope. Two parallel side guide rods 32 integrally formed with the upper slider 3 are provided on both sides of the connecting groove 31. The upper end of each side guide rod 32 is flush with the upper end face of the upper slider 3, and the lower end of each side guide rod 32 extends obliquely out of the connecting groove 31. A side guide groove 33 parallel to the upper guide slope is formed between two side guide rods 32 on the same side. The lower slider 4 has a lower guide slope corresponding to the upper guide slope. The lower slider 4 has side guide slopes corresponding to the upper guide slope. The lower slider 4 is integrally formed and has side rods 41 corresponding to each side guide groove 33. Each side rod 41 is slidably disposed in the corresponding side guide groove 33. The upper end of each side rod 41 is flush with the upper end of the lower slider 4, and the lower end of each side rod 41 extends out of the lower slider 4. The bottom cover 1 is provided with a bottom slide groove 13 corresponding to each side rod 41. The bottom slide groove 13 is arranged parallel to the connecting rod 6. The bottom of each side rod 41 is slidably disposed in the corresponding bottom slide groove 13. Each side guide groove 33 on the upper slider 3 drives the lower slider 4 to slide on the bottom cover 1 by pressing down on each side rod 41.

[0028] Each side rod 41 is provided with a horizontally arranged limiting side rod 42 on its outer side, and each bottom slide groove 13 is provided with a limiting side groove 14 corresponding to the limiting side rod 42. One end of each limiting side groove 14 is set in the bottom slide groove 13, and the other end of each limiting side groove 14 extends out of the bottom cover 1 along the extension direction of the bottom slide groove 13. Each limiting side rod 42 is slidably set in the corresponding limiting side groove 14.

[0029] The bottom cover 1 is provided with two oppositely arranged connecting seats 15, each of which is provided with a connecting hole 16. The extension direction of each connecting hole 16 is perpendicular to the bottom cover 1. The button cover 2 is provided with a connecting rod 22 that is adapted to each connecting hole 16. Each connecting rod 22 is slidably connected to the connecting hole 16 through the sliding cooperation of the upper slider 3 and the lower slider 4.

[0030] The upper slider 3 is provided with multiple mounting screw holes 34, each of which is equipped with a positioning bolt. The axis of each mounting screw hole 34 is parallel to the connecting rod 6. The rope groove 21 is provided with a connecting through hole 23 corresponding to each mounting screw hole 34. Each positioning bolt is provided with a threaded part. The threaded part of each positioning bolt passes through the connecting through hole 23 and engages with the mounting screw hole 34. The upper slider 3 is fixedly installed in the button cover 2 through the threaded engagement of each threaded part with the mounting screw hole 34.

[0031] The working principle of this utility model is as follows: During use, a mounting groove for the button device is pre-drilled on the back cover A of the mobile phone. The snap fastener is then installed in the mounting groove. When not in use, the upper surface of the button cover 2 is flush with the end face of the back cover A of the mobile phone. When using the lanyard, the user can press down on the button cover 2. During this pressing process, the upper slider 3 and the lower slider 4 slide, and through the cooperation of the side rods 41 and the side guide grooves 33, the upper slider 3 ensures that the lower slider 4... The inclined downward pressing of slider 4, the cooperation of each side rod 41 and side guide groove 33, and the sliding cooperation between lower slider 4 and bottom cover 1 can limit the lifting stroke of button cover 2, preventing button cover 2 from separating from bottom cover 1. At the same time, the cooperation of each limiting side rod 42 and limiting side groove 14 further limits the sliding stroke of upper slider 3 and lower slider 4, further preventing button cover 2 from separating from bottom cover 1. Ball 5 slides from the second arc-shaped groove 122 into the first arc-shaped groove 121, and The ball bearing 5, through its cooperation with the first position protrusion and the continuous force exerted by the return spring 7 on the lower slider 4, causes the button cover 2 to extend. After the button cover 2 extends out of the back cover A of the phone, the user can attach the lanyard to the lanyard groove 21 of the button cover 2. After the lanyard is attached to the lanyard groove 21, accidental activation is effectively avoided. Even if the user accidentally activates the button cover 2, the lanyard will interfere with the sliding direction of the button cover 2, eliminating the possibility of the button cover 2 resetting. After removing the lanyard, the user can press the button cover 2. The button cover 2 resets by sliding the upper slider 3 and the lower slider 4, and by the ball bearing 5 sliding from the first arc-shaped groove 121 to the second arc-shaped groove 122. After resetting, the upper end of the button cover 2 is flush with the end face of the back cover A of the phone. The flush setting of the button cover 2 and the back cover A of the phone also avoids accidental activation by the user. It can ensure the safe use and connection of the lanyard, and also prevent the lanyard from falling off due to user error. The structure is ingenious, convenient and practical.

[0032] 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 snap fastener for a mobile phone back cover lanyard, having a bottom cover that can be installed on the back cover of a mobile phone; characterized in that: The upper end of the bottom cover is provided with a button cover coaxially arranged with the bottom cover. The outer wall of the button cover has a rope groove for attaching a hanging rope. The rope groove is coaxial with the button cover. The button cover is vertically connected to the bottom cover via a sliding device. The sliding device includes an upper slider installed inside the button cover, a lower slider slidably connected to the bottom cover, a limiting block on the bottom cover, a connecting rod on the limiting block, and a return spring sleeved on the connecting rod. The lower slider and the upper slider are obliquely slidably connected. The lower slider is horizontally slidably connected to the bottom cover via the oblique sliding of the upper slider. The horizontal direction of the lower slider is parallel to the connecting rod. The lower slider has a through hole through which the connecting rod can pass. The return spring is located between the lower slider and the limiting block, with its two ends acting between the lower slider and the limiting block respectively. The bottom of the lower slider has a slider groove, the extension direction of which is perpendicular to the axis of the connecting rod. The bottom cover has a track groove, and a ball bearing is provided between the track groove and the slider groove. The ball bearing is slidably disposed in the track groove and the slider groove. The track groove includes a first arc-shaped groove, a second arc-shaped groove, and side grooves disposed on both sides of the first arc-shaped groove and the second arc-shaped groove. The two ends of the first arc-shaped groove and the two ends of the second arc-shaped groove are connected through the respective side grooves. The first arc-shaped groove has a first stop protrusion, and the second arc-shaped groove has a second stop protrusion. Both the first stop protrusion and the second stop protrusion protrude towards the side away from the limiting block. The upper end surface of the button cover is coplanar with the back cover of the phone after the ball bearing and the second stop protrusion are pressed together. The ball bearing slides into the first stop protrusion through the sliding cooperation of the upper slider and the lower slider, and the sliding cooperation of the lower slider and the bottom cover. The button cover extends out of the back cover of the phone through the cooperation of the ball bearing and the first stop protrusion, and the continuous force of the return spring on the lower slider, and is connected to the lanyard.

2. The snap fastener for a mobile phone back cover lanyard according to claim 1, characterized in that: The upper slider has a connecting groove that opens towards the limiting block. One end of the connecting groove away from the limiting block has an upper guide slope. Two parallel side guide rods, integrally formed with the upper slider, are provided on both sides of the connecting groove. The upper end of each side guide rod is flush with the upper surface of the upper slider, and the lower end of each side guide rod extends obliquely out of the connecting groove. A side guide groove, parallel to the upper guide slope, is formed between the two side guide rods on the same side. The lower slider has a lower guide slope corresponding to the upper guide slope. Side rods, integrally formed with the lower slider and corresponding to each side guide groove, are provided on both sides of the lower slider. Each side rod is slidably disposed within its corresponding side guide groove. The upper end of each side rod is flush with the upper end of the lower slider, and the lower end of each side rod extends out of the lower slider. The bottom cover has a bottom sliding groove corresponding to each side rod. The bottom sliding groove is parallel to the connecting rod, and the bottom of each side rod is slidably disposed within its corresponding bottom sliding groove. The side guide grooves on the upper slider cause the lower slider to slide on the bottom cover by pressing down on each side rod.

3. The snap fastener for a mobile phone back cover lanyard according to claim 2, characterized in that: Each side rod has a horizontally positioned limiting side rod on its outer side, and each bottom slide groove has a limiting side groove corresponding to the limiting side rod. One end of each limiting side groove is set in the bottom slide groove, and the other end of each limiting side groove extends out of the bottom cover along the extension direction of the bottom slide groove. Each limiting side rod is slidably set in the corresponding limiting side groove.

4. The snap fastener for a mobile phone back cover lanyard according to claim 3, characterized in that: The bottom cover has two oppositely arranged connecting seats, each with a connecting hole. The extension direction of each connecting hole is perpendicular to the bottom cover. The button cover has connecting rods that are adapted to each connecting hole. Each connecting rod is slidably connected to the connecting hole through the sliding cooperation of the upper and lower sliders.

5. The snap fastener for a mobile phone back cover lanyard according to claim 4, characterized in that: The upper slider is provided with multiple mounting screw holes, each of which is equipped with a positioning bolt. The axis of each mounting screw hole is parallel to the connecting rod. The rope groove is provided with a connecting through hole corresponding to each mounting screw hole. Each positioning bolt is provided with a threaded part. After the threaded part of each positioning bolt passes through the connecting through hole, it engages with the mounting screw hole. The upper slider is fixedly installed inside the button cover through the threaded engagement of each threaded part with the mounting screw hole.

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