A back clip and electronic device assembly

Abstract

This utility model belongs to the field of electronic device accessories, and discloses a back clip and electronic device assembly. The back clip includes a housing, a handle, a first buckle, and a travel conversion mechanism. The handle is movably disposed in the housing along a first direction. The first buckle is movably disposed in the housing along the first direction. The travel conversion mechanism is disposed inside the housing, with one end cooperating with the handle and the other end cooperating with the first buckle. When the handle moves along the first direction, the travel conversion mechanism drives the first buckle to move in the same direction, and the moving distance of the first buckle along the first direction is less than the moving distance of the handle along the first direction. This utility model can convert the long travel of the handle into the short travel of the buckle through the travel conversion mechanism to provide operational feedback and improve the user experience.

Description

Technical Field

[0001] This utility model relates to the field of electronic device accessories technology, and more particularly to a back clip and electronic device assembly. Background Technology

[0002] With the widespread use of portable electronic devices such as smartphones and tablets, users have placed higher demands on the ease and comfort of using these devices. Back clips, as a common accessory, have also gradually gained attention. The main function of a back clip is to lock electronic devices in place using a clip, allowing users to secure the device to their wrist, belt, or desktop, thus freeing their hands and preventing hand fatigue caused by prolonged holding.

[0003] In existing technologies, back clips typically include a handle and a latch. The handle drives the latch to lock and unlock the electronic device. Due to limitations imposed by the frame structure, the latch can only move a short distance. However, in existing back clips, the handle and latch have the same travel distance, resulting in a correspondingly short displacement when the user pulls the handle. This lack of clear operational feedback makes it difficult for the user to feel a distinct unlocking or locking response, leading to a poor user experience. Utility Model Content

[0004] The purpose of this application is to provide a back clip and electronic device assembly that converts the long stroke of the handle into the short stroke of the buckle to provide operational feedback and improve the user experience.

[0005] The technical solution provided in this application is as follows:

[0006] On the one hand, a back clip is provided, including:

[0007] case;

[0008] A handle is movably disposed within the housing along a first direction;

[0009] A first buckle is movably disposed on the housing along the first direction;

[0010] A travel conversion mechanism is disposed inside the housing, with one end cooperating with the handle and the other end cooperating with the first buckle. When the handle moves along the first direction, the travel conversion mechanism drives the first buckle to move in the same direction as the first direction, and the moving distance of the first buckle along the first direction is less than the moving distance of the handle along the first direction.

[0011] In some embodiments, the stroke conversion mechanism includes a first link and a second link, which are rotatably disposed in the housing;

[0012] One end of the first connecting rod engages with the handle, the other end of the first connecting rod engages with one end of the second connecting rod, and the other end of the second connecting rod engages with the first buckle;

[0013] When the handle moves along the first direction, it drives the first link to rotate. When the first link rotates, it drives the second link to rotate. The rotation direction of the second link is opposite to that of the first link. When the second link rotates, it drives the first buckle to move along the first direction.

[0014] In some embodiments, the handle has a first protrusion on the side near the first connecting rod, and one end of the first connecting rod has a first mating part, the first mating part being in contact with the driving surface of the first protrusion;

[0015] When the handle moves along the first direction, the driving surface of the first protrusion acts on the first mating part, causing the first connecting rod to rotate.

[0016] In some embodiments, the other end of the first connecting rod is provided with a second mating part, and one end of the second connecting rod is provided with a third mating part, wherein the third mating part has a moving surface that abuts against the second mating part;

[0017] When the first connecting rod rotates, the second mating part slides along the driven surface of the third mating part and pushes the third mating part to drive the second connecting rod to rotate.

[0018] In some embodiments, the other end of the second connecting rod is provided with a fourth mating part, and the first buckle is provided with a second protrusion on the side near the second connecting rod, the second protrusion having a moving surface that abuts against the fourth mating part;

[0019] When the second connecting rod rotates, the fourth mating part slides along the moving surface of the second protrusion and continuously pushes against the second protrusion, so that the rotational motion of the second connecting rod is converted into the linear motion of the first buckle along the first direction.

[0020] In some embodiments, the surface on which the first mating part mates with the first protrusion is arc-shaped;

[0021] The surfaces where the second mating part mates with the third mating part are arc-shaped;

[0022] The surface on which the fourth mating part mates with the second protrusion is arc-shaped.

[0023] In some embodiments, a clearance groove is provided on the first connecting rod adjacent to the first mating part, the clearance groove being used to avoid the first protrusion when the first connecting rod rotates.

[0024] In some embodiments, the housing is provided with a first limiting part, and the first buckle is provided with a second limiting part. The first limiting part and the second limiting part cooperate to limit the movement direction of the first buckle and the movement stroke along the first direction.

[0025] In some embodiments, the housing is provided with a third limiting part, and the handle is provided with a fourth limiting part. The third limiting part and the fourth limiting part cooperate to limit the movement direction of the handle and the movement stroke along the first direction.

[0026] In some embodiments, the length of the first lever arm from the point of contact between the first link and the handle to the center of rotation of the first link is greater than the length of the second lever arm from the point of contact between the first link and the second link to the center of rotation of the first link.

[0027] The length of the third lever arm from the point of contact between the second link and the first buckle to the center of rotation of the second link is less than or equal to the length of the fourth lever arm from the point of contact between the second link and the first link to the center of rotation of the second link.

[0028] In some embodiments, a reverse linkage and a second latch are also included, the reverse linkage being rotatably disposed in the housing and linked with the first latch;

[0029] When the first latch moves along the first direction, the second latch is synchronously driven to move in the opposite direction along the first direction via the reverse linkage.

[0030] In some embodiments, a first reset member and a second reset member are also included, one end of the first reset member being connected to the housing and the other end being connected to the first latch, for providing an elastic force to cause the first latch to reset;

[0031] One end of the second reset member is connected to the housing, and the other end is connected to the second latch, which is used to increase the elastic force that causes the second latch to reset.

[0032] In some embodiments, a top bead and an elastic element are also included, the elastic element holding the top bead telescopically within the housing, and the handle is provided with a limiting groove. When the handle moves to its limit position along the first direction, the top bead is engaged in the limiting groove under the elastic force of the elastic element.

[0033] In some embodiments, the stroke conversion mechanism includes a gear, a first rack, and a second rack, the gear being rotatably mounted on the housing, and the gear comprising a large-diameter gear and a small-diameter gear integrally coaxially arranged;

[0034] The first rack is fixed to the handle, the second rack is fixed to the first buckle, and the first rack and the second rack are parallel to the first direction and located on the same side of the gear;

[0035] The first rack meshes with the major diameter gear, and the second rack meshes with the minor diameter gear; the pitch circle radius of the major diameter gear is greater than the pitch circle radius of the minor diameter gear, so that the moving distance of the first buckle along the first direction is less than the moving distance of the handle along the first direction.

[0036] On the other hand, an electronic device assembly is also provided, including an electronic device and a back clip as described in any of the above embodiments, wherein the electronic device is detachably mounted on the back clip.

[0037] The technical advantage of this application is that a stroke conversion mechanism is provided between the handle and the first buckle to convert the long-distance movement of the handle along the first direction into a short-distance movement of the first buckle in the same direction. This solves the problem that the handle can still obtain a sufficiently long operating stroke when the displacement distance of the first buckle is limited by the shell frame structure, so that the user can have a clear feel and clear feedback when operating the handle, reduce the probability of misoperation, and improve the user experience. Attached Figure Description

[0038] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0039] Figure 1 This is a schematic diagram of the back clip in the locked state according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the back clip in the unlocked state according to an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of the stroke conversion mechanism provided in one embodiment of this application;

[0042] Figure 4 This is a schematic diagram of the lever arm of a stroke conversion mechanism provided in an embodiment of this application;

[0043] Figure 5 This is a cross-sectional schematic diagram of a back clip provided in an embodiment of this application.

[0044] Explanation of icon numbers:

[0045] 10. Housing; 11. First limiting part; 12. Third limiting part; 20. Handle; 21. Handle body; 22. Handle connecting rod; 221. First protrusion; 23. Fourth limiting part; 30. First buckle; 31. Second protrusion; 32. Second limiting part; 33. Actuating part; 40. Stroke conversion mechanism; 41. First connecting rod; 411. First mating part; 412. Second mating part; 413. Clearance groove; 42. Second connecting rod; 421. Third mating part; 422. Fourth mating part; 43. First rotating shaft; 44. Second rotating shaft; 50. Reverse connecting rod; 60. Second buckle; 71. First reset component; 72. Second reset component; 73. Third reset component; 80. Top ball. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0048] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0049] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0050] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) are relative rather than absolute when describing the structure and movement of the various components, and are not intended to limit the direction of the product during actual use.

[0052] Furthermore, in the description of this application, ordinal numbers, such as "first" and "second," are used only to distinguish related objects and should not be construed as indicating or implying the relative importance or order between related objects.

[0053] like Figure 1 and Figure 2 As shown, in one or more embodiments, this disclosure provides a back clip, including a housing 10, a handle 20, a first buckle 30, and a travel conversion mechanism 40; the handle 20 is movably disposed in the housing 10 along a first direction; the first buckle 30 is movably disposed in the housing 10 along a first direction; the travel conversion mechanism 40 is disposed inside the housing 10, with one end cooperating with the handle 20 and the other end cooperating with the first buckle 30. When the handle 20 moves along the first direction, the travel conversion mechanism 40 drives the first buckle 30 to move in the same direction along the first direction, and the moving distance of the first buckle 30 along the first direction is less than the moving distance of the handle 20 along the first direction.

[0054] Specifically, the housing 10 has an overall flat box or flat plate structure, used to install the handle 20, the first buckle 30, and the stroke conversion mechanism 40, and to fix and support electronic equipment. The handle 20 is slidably embedded in the guide groove of the housing 10 and can reciprocate along a first direction, which can be the length or width direction of the housing 10. A part of the handle 20 is located on the outside of the housing 10 to facilitate user operation of the handle 20 and to realize the movement of the handle 20 along the first direction. The other part of the handle 20 is located on the inside of the housing 10 to cooperate with the stroke conversion mechanism 40 and drive the stroke conversion mechanism 40 to move during movement. For example, the handle 20 includes a handle body 21 and a handle link 22. The handle body 21 is located outside the housing, and the handle link 22 is located inside the housing. The handle body 21 and the handle link 22 are fixedly connected or integrally set to realize synchronous movement of the handle body 21 and the handle link 22.

[0055] The first latch 30 is disposed on any side of the housing 10. The front end of the first latch 30 is provided with a hook-shaped engaging portion for securing the frame of the electronic device. The first latch 30 can reciprocate along a first direction. When the first latch 30 moves into position towards the center of the housing 10 along the first direction, it can secure the electronic device. When the first latch 30 moves away from the center of the housing 10 along the first direction, it can release the electronic device, at which point the electronic device can be removed from the back clip.

[0056] The stroke conversion mechanism 40 is disposed between the handle 20 and the first buckle 30. It is used to convert the long-distance movement of the handle 20 along the first direction into a short-distance movement of the first buckle 30 in the same direction. This solves the problem that the handle 20 can still obtain a sufficiently long operating stroke when the displacement distance of the first buckle 30 is limited by the frame structure of the housing 10. This makes the user feel clear and the feedback clear when operating the handle 20, reduces the probability of misoperation, and improves the user experience.

[0057] In some embodiments, such as Figures 1 to 3 As shown, the stroke conversion mechanism 40 includes a first link 41 and a second link 42, which are rotatably mounted on the housing 10. One end of the first link 41 engages with the handle 20, and the other end of the first link 41 engages with one end of the second link 42. The other end of the second link 42 engages with the first latch 30. When the handle 20 moves along the first direction, it drives the first link 41 to rotate. When the first link 41 rotates, it drives the second link 42 to rotate. The rotation direction of the second link 42 is opposite to the rotation direction of the first link 41. When the second link 42 rotates, it drives the first latch 30 to move along the first direction.

[0058] The housing 10 contains a first rotating shaft 43 and a second rotating shaft 44. A first connecting rod 41 is rotatably connected to the housing 10 via the first rotating shaft 43, which forms the rotation center of the first connecting rod 41 and is located between its two ends. A second connecting rod 42 is rotatably connected to the housing 10 via the second rotating shaft 44, which forms the rotation center of the second connecting rod 42 and is located between its two ends. The axial direction of the first rotating shaft 43 is parallel to the axial direction of the second rotating shaft 44 and is perpendicular to the plane of the housing 10.

[0059] When the handle 20 moves in the first direction, it drives the first link 41 to rotate clockwise or counterclockwise through the cooperation between the handle 20 and the first link 41. When the first link 41 rotates, it drives the second link 42 to rotate in the opposite direction. That is, when the first link 41 rotates clockwise, the second link 42 rotates counterclockwise; when the first link 41 rotates counterclockwise, the second link 42 rotates clockwise. When the second link 42 rotates, it drives the first latch 30 to move in the same direction as the handle 20 in the first direction.

[0060] In some embodiments, such as Figure 3 As shown, the handle 20 has a first protrusion 221 on the side near the first link 41, and a first mating part 411 is provided at one end of the first link 41. The first mating part 411 is in contact with the driving surface of the first protrusion 221. When the handle 20 moves in the first direction, the driving surface of the first protrusion 221 acts on the first mating part 411, causing the first link 41 to rotate.

[0061] The first mating part 411 of the first link 41 always maintains contact with the driving surface of the first protrusion 221. Once the handle 20 starts to move, the force is immediately transmitted to the first link 41 through the driving surface of the first protrusion 221 without gap, eliminating idle travel and achieving "zero delay" start-up.

[0062] In some embodiments, such as Figure 3 As shown, the other end of the first connecting rod 41 is provided with a second mating part 412, and one end of the second connecting rod 42 is provided with a third mating part 421. The third mating part 421 has a driven surface that abuts against the second mating part 412. When the first connecting rod 41 rotates, the second mating part 412 slides along the driven surface of the third mating part 421 and pushes the third mating part 421 to drive the second connecting rod 42 to rotate.

[0063] The second mating part 412 always fits against the driven surface of the third mating part 421. When the first connecting rod 41 rotates, the second mating part 412 slides along the driven surface of the third mating part 421, driving the second connecting rod 42 to rotate synchronously and forming a continuous rolling-sliding compound motion, eliminating transmission backlash and ensuring the instantaneous and accurate force transmission between the first connecting rod 41 and the second connecting rod 42.

[0064] In some embodiments, such as Figure 3 As shown, the other end of the second link 42 is provided with a fourth mating part 422, and the first buckle 30 is provided with a second protrusion 31 on the side near the second link 42. The second protrusion 31 has a moving surface that abuts against the fourth mating part 422. When the second link 42 rotates, the fourth mating part 422 slides along the moving surface of the second protrusion 31 and continuously pushes the second protrusion 31, so that the rotational motion of the second link 42 is converted into the linear motion of the first buckle 30 along the first direction.

[0065] The fourth mating part 422 of the second link 42 always keeps in contact with the second protrusion 31. When the second link 42 rotates, the fourth mating part 422 performs a rolling-sliding compound motion along the moving surface of the second protrusion 31, and continuously pushes the second protrusion 31 along the first direction during the rotation of the second link 42, so as to realize the synchronous movement of the first buckle 30 and the handle 20.

[0066] Preferably, the surfaces of the first mating part 411 and the first protrusion 221 are arc-shaped; the surfaces of the second mating part 412 and the third mating part 421 are arc-shaped; and the surfaces of the fourth mating part 422 and the second protrusion 31 are arc-shaped. The mating surfaces between the handle 20 and the first connecting rod 41, between the first connecting rod 41 and the second connecting rod 42, and between the second connecting rod 42 and the first buckle 30 are all arc-shaped, forming a rolling-sliding composite motion. This maintains line contact at all times, reduces friction between the mating surfaces, ensures continuous and stable torque transmission, and avoids jamming.

[0067] In some embodiments, a clearance groove 413 is provided on the first connecting rod 41 adjacent to the first mating part 411. The clearance groove 413 is used to avoid the first protrusion 221 when the first connecting rod 41 rotates. The first protrusion 221 is a rigid cantilever or an integral boss provided on the handle 20. When the first connecting rod 41 rotates around its rotation center, the first protrusion 221 will interfere with the first connecting rod 41. By providing a clearance groove 413 on the first connecting rod 41, the clearance groove 413 is opened in the form of a notch or cavity. In this way, no matter how large the rotation angle of the first connecting rod 41 is, the first protrusion 221 can be in the clearance groove 413, ensuring that the first protrusion 221 and the first connecting rod 41 do not have mechanical collision, so that the rotation is continuous and smooth.

[0068] In some embodiments, such as Figure 1 and Figure 2 As shown, the housing 10 is provided with a first limiting part 11, and the first latch 30 is provided with a second limiting part 32. The first limiting part 11 and the second limiting part 32 cooperate to limit the movement stroke of the first latch 30 along the first direction. The first limiting part 11 can be a limiting block, and the second limiting part 32 can be a limiting groove. The limiting groove extends along the first direction. When the first latch 30 moves to the point where the limiting block is located at one end of the limiting groove, the first latch 30 stops moving, ensuring that the stroke of the first latch 30 is locked at a set value, and preventing the first latch 30 from being damaged by impact with other components. In addition, through the cooperation of the first limiting part 11 and the second limiting part 32, the displacement direction of the first latch 30 is also limited, so that the first latch 30 can only move along the first direction and will not deviate to the left or right. In other embodiments, the first limiting part 11 may be a limiting groove, the second limiting part 32 may be a limiting block, or both the first limiting part 11 and the second limiting part 32 may be limiting blocks. The first buckle 30 stops moving when the two limiting blocks come into contact.

[0069] In some embodiments, the housing 10 is provided with a third limiting part 12, and the handle 20 is provided with a fourth limiting part 23. The third limiting part 12 and the fourth limiting part 23 cooperate to limit the movement stroke of the handle 20 along the first direction and ensure that the handle 20 can only move along the first direction, preventing the handle 20 from deviating from the first direction when moving. In this embodiment, the third limiting part 12 is a limiting block, and the fourth limiting part 23 is a limiting groove. In other embodiments, the third limiting part 12 may be a limiting groove, and the fourth limiting part 23 may be a limiting block. When limiting the movement, the limiting structure on the handle 20 or the limiting structure on the first buckle 30 may be used.

[0070] In some embodiments, such as Figure 4 As shown, the first lever arm length L1 from the mating point of the first link 41 and the handle 20 to the rotation center of the first link 41 is greater than the second lever arm length L2 from the mating point of the first link 41 and the second link 42 to the rotation center of the first link 41; the third lever arm length L3 from the mating point of the second link 42 and the first buckle 30 to the rotation center of the second link 42 is less than or equal to the fourth lever arm length L4 from the mating point of the second link 42 and the first link 41 to the rotation center of the second link 42.

[0071] In this embodiment, the rotation center of the first connecting rod 41 is the center of the first rotating shaft 43 in the above embodiment, and the rotation center of the second connecting rod 42 is the center of the second rotating shaft 44 in the above embodiment. The engagement point between the first connecting rod 41 and the handle 20 refers to the instantaneous contact point where the handle directly transmits force to the first connecting rod 41 during movement, that is, the actual contact position between the first protrusion 221 of the handle 20 and the first engaging part 411 of the first connecting rod 41; similarly, the engagement point between the first connecting rod 41 and the second connecting rod 42 refers to the actual contact position between the second engaging part 412 and the third engaging part 421, and the engagement point between the second connecting rod 42 and the first buckle 30 refers to the actual contact position between the fourth engaging part 422 and the second protrusion 31.

[0072] The length of the first lever arm from the engagement point of the first link 41 and the handle 20 to the rotation center of the first link 41 is greater than the length of the second lever arm from the engagement point of the first link 41 and the second link 42 to the rotation center of the first link 41. This structural design forms a first-stage lever to reduce the handle's stroke. The length of the third lever arm from the engagement point of the second link 42 and the first latch 30 to the rotation center of the second link 42 is less than or equal to the length of the fourth lever arm from the engagement point of the second link 42 and the first link 41 to the rotation center of the second link 42. The second-stage lever maintains or continues to reduce the stroke. After the two stages of levers are superimposed, the movement stroke of the first latch 30 in the first direction is less than the movement stroke of the handle 20 in the first direction. For example, when the handle 20 moves 5mm, the first latch 30 moves 2mm through the arrangement of the first link 41 and the second link 42. In practical applications, the lengths of the first, second, third, and fourth lever arms can be designed according to the required actual stroke ratio between the handle 20 and the first latch 30. This embodiment does not specifically limit the actual stroke ratio between the handle 20 and the first buckle 30, nor does it specifically limit the lengths of the first lever arm, the second lever arm, the third lever arm, and the fourth lever arm.

[0073] In some embodiments, such as Figure 1 and Figure 2 As shown, it also includes a reverse linkage 50 and a second latch 60. The reverse linkage 50 is rotatably disposed on the housing 10 and is linked with the first latch 30. When the first latch 30 moves in the first direction, the second latch 60 is synchronously driven to move in the opposite direction in the first direction through the reverse linkage 50.

[0074] The first latch 30 and the second latch 60 are respectively disposed on the upper and lower sides or the left and right sides of the housing 10. In the locked state, the first latch 30 and the second latch 60 respectively lock the side frames of the electronic device. When unlocking, the user pulls the handle 20, which drives the first latch 30 to move outward in the first direction through the stroke conversion mechanism 40. The lower end of the first latch 30 is provided with a toggle part 33, which abuts against the reverse connecting rod 50. When the first latch 30 moves outward in the first direction, the toggle part 33 drives the reverse connecting rod 50 to rotate around its central axis. When the reverse connecting rod 50 rotates, it drives the second latch 60 to move in the opposite direction in the first direction. That is, when the first latch 30 moves upward, the second latch 60 moves downward, so that the first latch 30 and the second latch 60 release the electronic device simultaneously. Similarly, the second latch 60 and the housing 10 are respectively provided with limiting parts. The movement stroke of the second latch is limited by the cooperation of the two limiting parts.

[0075] In this embodiment, by setting a reverse connecting rod 50 that cooperates with the first buckle 30, the buckles on both sides can be moved simultaneously by pulling the handle 20 only once, thereby enabling one-handed unlocking and improving operational convenience. The first buckle 30 and the second buckle 60 are located on both sides of the electronic device, and the buckles on both sides move in opposite directions synchronously, with symmetrical clamping force, so that the electronic device is subjected to uniform force, avoiding unilateral tilt that could cause the electronic device to loosen or be scratched.

[0076] The rotating power arms on both sides of the reverse linkage 50 can be adjusted according to the required extension length of the second latch 60 to adjust the moving distance of the second latch along the first direction. Preferably, the rotating power arms on both sides of the reverse linkage 50 are of equal length, that is, the rotation center of the reverse linkage 50 is the center of the reverse linkage, and the distance from one end of the reverse linkage 50 to the rotation center of the reverse linkage 50 is equal to the distance from the other end of the reverse linkage 50 to the rotation center of the reverse linkage 50, so that the second latch 60 and the first latch 30 move the same distance along the first direction, thereby achieving equidistant movement of the first latch 30 and the second latch 60.

[0077] Furthermore, there can be two first latches 30 and two second latches 60. The two first latches 30 are respectively disposed on both sides of the handle 20. A stroke conversion mechanism is provided between each first latch 30 and the handle 20 to enable the first latch 30 to move via the handle 20. The two second latches 60 are configured one-to-one with the two first latches 30. Each second latch 60 is connected to a first latch 30 via a reverse connecting rod 50 to enable the second latch 60 to move and unlock synchronously via the first latch 30.

[0078] In some embodiments, such as Figure 1 and Figure 2 As shown, it also includes a first reset member 71 and a second reset member 72. One end of the first reset member 71 is connected to the housing 10, and the other end is connected to the first latch 30, for providing an elastic force to cause the first latch 30 to reset. One end of the second reset member 72 is connected to the housing 10, and the other end is connected to the second latch 60, for increasing the elastic force to cause the second latch 60 to reset.

[0079] When unlocking, the user pulls the handle 20, and the stroke conversion mechanism 40 drives the first latch 30 to move in the first direction. At the same time, the first latch 30 drives the second latch 60 to move in the opposite direction in the first direction to achieve unlocking. At this time, both the first reset member 71 and the second reset member 72 are in the energy storage stage. After releasing the handle 20, the first latch 30 moves in the opposite direction in the first direction to its initial position under the action of the first reset member 71, and the second latch 60 resets under the elastic force of the second reset member 72, realizing the automatic reset and locking of the first latch 30 and the second latch 60.

[0080] In this embodiment, the first reset member 71 and the second reset member 72 can be springs, spring sheets, etc. The number of first reset members 71 is the same as the number of first latches 30, and the first reset members 71 are connected to the first latches 30 in a one-to-one correspondence. The number of second reset members 72 is the same as the number of second latches 60, and the second reset members 72 are connected to the second latches 60 in a one-to-one correspondence.

[0081] In this embodiment, by setting the first reset member 71 and the second reset member 72, the first buckle 30 and the second buckle 60 can be automatically reset, eliminating the need to manually push the first buckle 30 and the second buckle 60 back, achieving the effect of opening with a pull and locking with a release, making one-handed operation more convenient.

[0082] Furthermore, it also includes a third reset member 73, one end of which is connected to the housing 10 and the other end is connected to the handle 20. After the handle 20 is moved by an external force, the handle 20 is automatically reset by the third reset member 73.

[0083] In some embodiments, such as Figure 5 As shown, it also includes a top bead 80 and an elastic element. The elastic element holds the top bead 80 retractably within the housing 10. The handle 20 is provided with a limiting groove. When the handle 20 moves to the limit position along the first direction, the top bead 80 is inserted into the limiting groove under the elastic force of the elastic element.

[0084] When the handle 20 moves to its limit position along the first direction, the top bead 80 is engaged in the limiting groove under the action of the elastic element, generating clear tactile and auditory feedback. The user can immediately perceive that the unlocking limit position has been reached. At this time, the user can install or remove the electronic device. After releasing the handle 20, the first reset member 71 and the second reset member 72 pull back the first buckle 30 and the second buckle 60 to lock the electronic device.

[0085] In some embodiments, the stroke conversion mechanism 40 includes a gear, a first rack, and a second rack. The gear is rotatably disposed on the housing 10 and includes a large-diameter gear and a small-diameter gear integrally coaxially disposed. The first rack is fixed to the handle 20, and the second rack is fixed to the first buckle 30. The first rack and the second rack are parallel to the first direction and located on the same side of the gear. The first rack meshes with the large-diameter gear, and the second rack meshes with the small-diameter gear. The pitch circle radius of the large-diameter gear is larger than that of the small-diameter gear, so that the moving distance of the first buckle 30 along the first direction is less than the moving distance of the handle 20 along the first direction.

[0086] In this embodiment, the axial extension direction of the shafts of the large-diameter gear and the small-diameter gear can be parallel to the plane of the housing 10 and perpendicular to the first direction. The first rack and the second rack are parallel to the first direction. For example, when the first direction is the width direction of the housing 10, the shafts of the large-diameter gear and the small-diameter gear extend along the length direction of the housing 10, and the first rack and the second rack extend along the width direction of the housing 10. The first rack is fixed to the handle 20 and meshes with the large-diameter gear, and the second rack is fixed to the first buckle 30 and meshes with the small-diameter gear.

[0087] The user pulls handle 20 and moves it a distance L in the first direction. H The first rack drives the large diameter gear to rotate by an angle θ = L. H / R, where R is the pitch circle radius of the large diameter gear. The coaxial small diameter gear rotates synchronously by the same angle θ. The small diameter gear drives the second rack and the first latch 30 to move a distance LC = θ × r in the same direction along the first direction, where r is the pitch circle radius of the small diameter gear. Since R > r, L C = (r / R)×L H <L H This achieves travel compression.

[0088] In this embodiment, the stroke ratio of the first buckle 30 to the handle 20 is i = r / R. For example, when R = 5mm and r = 2mm, i = 2.5, meaning a 5mm stroke of the handle can achieve a 2mm stroke of the buckle. The first rack and the second rack are arranged on the same side and parallel to the first direction. The first buckle 30 and the handle 20 always move in the same straight line, without any lateral force, reducing guide rail wear and extending service life.

[0089] This disclosure also provides an embodiment of an electronic device assembly, including an electronic device and a back clip as described in any of the above embodiments, wherein the electronic device is detachably mounted on the back clip, and the structural diagram of the back clip is shown below. Figures 1 to 5 As shown. Electronic devices, such as mobile phones, tablets, and e-readers, can be fixed to the back clip. The back clip can be a wrist strap type or a stand type. The wrist strap type has a wrist strap, allowing the user to hold it or attach it to their wrist. The stand type has a stand for stably placing the back clip on a desktop or other flat surface. The stand's adjustable support structure allows the user to adjust the viewing angle of the electronic device according to their needs, meeting the user's usage requirements in different scenarios and improving the practicality and convenience of the back clip.

[0090] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0091] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A back splint, characterized in that, include: case; A handle is movably disposed within the housing along a first direction; A first buckle is movably disposed on the housing along the first direction; A travel conversion mechanism is disposed inside the housing, with one end cooperating with the handle and the other end cooperating with the first buckle. When the handle moves along the first direction, the travel conversion mechanism drives the first buckle to move in the same direction as the first direction, and the moving distance of the first buckle along the first direction is less than the moving distance of the handle along the first direction.

2. A back clip according to claim 1, characterized in that, The stroke conversion mechanism includes a first link and a second link, which are rotatably mounted on the housing. One end of the first connecting rod engages with the handle, the other end of the first connecting rod engages with one end of the second connecting rod, and the other end of the second connecting rod engages with the first buckle; When the handle moves along the first direction, it drives the first link to rotate. When the first link rotates, it drives the second link to rotate. The rotation direction of the second link is opposite to that of the first link. When the second link rotates, it drives the first buckle to move along the first direction.

3. A back clip according to claim 2, characterized in that, The handle has a first protrusion on the side near the first connecting rod, and a first mating part is provided at one end of the first connecting rod. The first mating part is in contact with the driving surface of the first protrusion. When the handle moves along the first direction, the driving surface of the first protrusion acts on the first mating part, causing the first connecting rod to rotate.

4. A back clip according to claim 3, characterized in that, The other end of the first connecting rod is provided with a second mating part, and one end of the second connecting rod is provided with a third mating part, wherein the third mating part has a moving surface that abuts against the second mating part; When the first connecting rod rotates, the second mating part slides along the driven surface of the third mating part and pushes the third mating part to drive the second connecting rod to rotate.

5. A back clip according to claim 4, characterized in that, The other end of the second connecting rod is provided with a fourth mating part, and the first buckle is provided with a second protrusion on the side near the second connecting rod. The second protrusion has a moving surface that abuts against the fourth mating part. When the second connecting rod rotates, the fourth mating part slides along the moving surface of the second protrusion and continuously pushes against the second protrusion, so that the rotational motion of the second connecting rod is converted into the linear motion of the first buckle along the first direction.

6. A back clip according to claim 5, characterized in that, The surface where the first mating part mates with the first protrusion is arc-shaped; The surfaces where the second mating part mates with the third mating part are arc-shaped; The surface on which the fourth mating part mates with the second protrusion is arc-shaped.

7. A back clip according to claim 3, characterized in that, The first connecting rod is provided with a clearance groove adjacent to the first mating part, and the clearance groove is used to avoid the first protrusion when the first connecting rod rotates.

8. A back clip according to claim 1, characterized in that, The housing is provided with a first limiting part, and the first buckle is provided with a second limiting part. The first limiting part and the second limiting part cooperate to limit the movement direction of the first buckle and the movement stroke along the first direction.

9. A back clip according to claim 8, characterized in that, The housing is provided with a third limiting part, and the handle is provided with a fourth limiting part. The third limiting part and the fourth limiting part cooperate to limit the movement direction of the handle and the movement stroke along the first direction.

10. A back clip according to any one of claims 2-7, characterized in that, The length of the first lever arm from the point of contact between the first link and the handle to the center of rotation of the first link is greater than the length of the second lever arm from the point of contact between the first link and the second link to the center of rotation of the first link. The length of the third lever arm from the point of contact between the second link and the first buckle to the center of rotation of the second link is less than or equal to the length of the fourth lever arm from the point of contact between the second link and the first link to the center of rotation of the second link.

11. A back clip according to any one of claims 1-9, characterized in that, It also includes a reverse linkage and a second latch, wherein the reverse linkage is rotatably disposed on the housing and is linked with the first latch; When the first latch moves along the first direction, the second latch is synchronously driven to move in the opposite direction along the first direction via the reverse linkage.

12. A back clip according to claim 11, characterized in that, It also includes a first reset component and a second reset component, one end of the first reset component is connected to the housing and the other end is connected to the first buckle, for providing an elastic force to cause the first buckle to reset; One end of the second reset member is connected to the housing, and the other end is connected to the second latch, which is used to increase the elastic force that causes the second latch to reset.

13. A back clip according to any one of claims 1-9, characterized in that, It also includes a top bead and an elastic element, the elastic element holding the top bead telescopically within the housing, and the handle is provided with a limiting groove. When the handle moves to its limit position along the first direction, the top bead is engaged in the limiting groove under the elastic force of the elastic element.

14. A back clip according to claim 1, characterized in that, The stroke conversion mechanism includes a gear, a first rack, and a second rack. The gear is rotatably mounted on the housing and includes a large-diameter gear and a small-diameter gear integrally coaxially arranged. The first rack is fixed to the handle, the second rack is fixed to the first buckle, and the first rack and the second rack are parallel to the first direction and located on the same side of the gear; The first rack meshes with the major diameter gear, and the second rack meshes with the minor diameter gear; the pitch circle radius of the major diameter gear is greater than the pitch circle radius of the minor diameter gear, so that the moving distance of the first buckle along the first direction is less than the moving distance of the handle along the first direction.

15. An electronic device assembly, comprising: Includes an electronic device and a back clip as described in any one of claims 1-14, wherein the electronic device is detachably mounted on the back clip.

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