Back clip and electronic device assembly

Abstract

We provide back clips and electronic device assemblies that can provide operational feedback and improve the user experience. [Solution] The back clip comprises a housing 10, a handle, a first buckle 30, and a stroke conversion mechanism 40. The handle is movably positioned in the housing along a first direction, and the first buckle is movably positioned in the housing along a first direction. A stroke conversion mechanism is positioned within the housing, with one end linked to the handle and the other end linked to the first buckle. When the handle moves in a first direction, the first buckle moves in the same direction along the first direction, and the distance the first buckle moves in the first direction becomes smaller than the distance the handle moves in the first direction. This invention realizes the conversion of a long stroke of the handle to a short stroke of the buckle using a stroke conversion mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic device components, and particularly to a back clip and an electronic device assembly.

Background Art

[0002] With the popularization of portable electronic devices such as smartphones and tablet terminals, users' requirements for the usability and comfort of devices are increasing. As a general accessory, the back clip is attracting attention. The main function of the back clip is to lock the electronic device in a buckle form, so that the user can fix the device at positions such as the wrist, belt, desktop, etc., release both hands of the user, and avoid the fatigue of the hand when the user holds the device for a long time.

[0003] In the prior art, the back clip usually includes a handle and a buckle for driving the movement of the buckle to realize the locking and unlocking of the electronic device. Due to the limitation of the frame structure, the buckle can only achieve displacement over a short distance. However, the strokes of the handle and the buckle of the existing back clip are the same, and the displacement distance when the user pulls the handle is correspondingly short, lacking obvious operation feedback. Therefore, it is difficult to feel clear unlocking and locking feedback during operation, and the user experience is not good.

Summary of the Invention

[0004] An object of the present application is to provide a back clip and an electronic device assembly that convert the long stroke of the handle into the short stroke of the buckle, provide operation feedback, and improve the user experience.

[0005] The technical solution provided by the present application is as follows.

[0006] According to one aspect, a housing, A handle is provided in the housing so as to be movable along a first direction, A first buckle is disposed in the housing so as to be movable along the first direction, The present invention provides a back clip comprising a stroke conversion mechanism provided within the housing, one end of which is linked to the handle and the other end of which is linked to the first buckle, wherein when the handle moves in the first direction, the first buckle moves in the same direction as the handle, and the distance the first buckle moves in the first direction is smaller than the distance the handle moves in the first direction.

[0007] In some embodiments, the stroke conversion mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being rotatably mounted in the housing, One end of the first connecting rod is linked to the handle, the other end of the first connecting rod is linked to one end of the second connecting rod, and the other end of the second connecting rod is linked to the first buckle. When the handle moves in the first direction, the first connecting rod is rotationally driven, and when the first connecting rod rotates, the second connecting rod is rotationally driven, and the direction of rotation of the second connecting rod is opposite to the direction of rotation of the first connecting rod, and when the second connecting rod rotates, the first buckle is moved in the first direction.

[0008] In some embodiments, a first projection is provided on the side of the handle closest to the first connecting rod, and a first engaging portion is provided at one end of the first connecting rod, the first engaging portion being in contact with the driving surface of the first projection. When the handle moves in the first direction, the drive surface of the first projection acts on the first engagement portion, causing the first connecting rod to rotate.

[0009] In some embodiments, a second engaging portion is provided at the other end of the first connecting rod, and a third engaging portion is provided at one end of the second connecting rod, the third engaging portion having a passive surface that contacts the second engaging portion. When the first connecting rod rotates, the second engaging portion slides along the passive surface of the third engaging portion and presses against the third engaging portion, thereby rotating the second connecting rod.

[0010] In some embodiments, a fourth engaging portion is provided at the other end of the second connecting rod, and a second projection is provided on the side of the first buckle closest to the second connecting rod, the second projection having a passive surface that contacts the fourth engaging portion. As the second connecting rod rotates, the fourth engaging portion slides along the passive surface of the second projection and continues to press against the second projection, thereby converting the rotational motion of the second connecting rod into linear motion of the first buckle in the first direction.

[0011] In some embodiments, the surface of the first engaging portion facing the first protrusion is arc-shaped. In the second engagement portion, the surface facing the third engagement portion is arc-shaped. The surface of the fourth engaging portion facing the second protrusion is arc-shaped.

[0012] In some embodiments, the first connecting rod is provided with a relief groove adjacent to the first engagement portion, the relief groove being for the purpose of relieving the first protrusion when the first connecting rod rotates.

[0013] In some embodiments, the housing is provided with a first limit portion, and the first buckle is provided with a second limit portion, the first limit portion engaging with the second limit portion to restrict the movement stroke of the first buckle in the direction of movement and in the first direction.

[0014] In some embodiments, the housing is provided with a third limit portion, and the handle is provided with a fourth limit portion, the third limit portion engaging with the fourth limit portion to restrict the movement stroke of the handle in the direction of movement and in the first direction.

[0015] In some embodiments, the length of the first lever arm from the point of application between the first connecting rod and the handle to the center of rotation of the first connecting rod is greater than the length of the second lever arm from the point of application between the first connecting rod and the second connecting rod to the center of rotation of the first connecting rod. The length of the third lever arm, from the point of application between the second connecting rod and the first buckle to the center of rotation of the second connecting rod, is less than or equal to the length of the fourth lever arm, from the point of application between the second connecting rod and the first connecting rod to the center of rotation of the second connecting rod.

[0016] In some embodiments, a reverse connecting rod and a second buckle are further provided, the reverse connecting rod being rotatably mounted in the housing and linked to the first buckle. When the first buckle moves in the first direction, the reverse connecting rod synchronously drives the second buckle to move in the opposite direction along the first direction.

[0017] In some embodiments, the system further comprises a first reset member and a second reset member, the first reset member having one end connected to the housing and the other end connected to the first buckle, and providing an elastic force to return the first buckle to its original position. The second reset member has one end connected to the housing and the other end connected to the second buckle, and is intended to provide an elastic force to return the second buckle to its original position.

[0018] In some embodiments, a ball plunger and an elastic member are further provided. The elastic member holds the ball plunger in the housing so that it can move forward and backward. A limit groove is provided in the handle. When the handle moves to the limit position in the first direction, the ball plunger is locked in the limit groove by the elastic force of the elastic member.

[0019] In some embodiments, the stroke conversion mechanism includes a gear, a first rack, and a second rack. The gear is rotatably attached to the housing. The gear includes a large-diameter gear and a small-diameter gear that are integrally arranged coaxially. 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 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 the pitch circle radius of the small-diameter gear, and the moving distance of the first buckle in the first direction is smaller than the moving distance of the handle in the first direction.

[0020] According to another aspect, an electronic device assembly is provided, which includes an electronic device and a back clip according to any of the above-described embodiments. The electronic device is detachably attached to the back clip.

[0021] The technical effect of the present application is that a stroke conversion mechanism is arranged between the handle and the first buckle, and by converting the long-distance movement of the handle in the first direction into the short-distance movement of the first buckle in the same direction in the first direction, even if the displacement distance of the first buckle is limited by the frame structure of the housing and becomes short, the handle can obtain a sufficient long operating stroke, solving the problem that the handle can obtain a sufficient long operating stroke. When the user operates the handle, the touch feeling is good, the feedback can be made clear, the probability of misoperation can be reduced, and the user experience can be improved.

Brief Description of the Drawings

[0022] Hereinafter, the present application will be described in more detail in conjunction with the drawings and specific embodiments.

[0023] [Figure 1] Figure 1 is a schematic structural diagram of the locked state of a back clip according to an embodiment of the present application. [Figure 2] Figure 2 is a schematic structural diagram of the unlocked state of a back clip according to an embodiment of the present application. [Figure 3] Figure 3 is a schematic structural diagram of a stroke conversion mechanism according to an embodiment of the present application. [Figure 4] Figure 4 is a schematic diagram of a lever arm of a stroke conversion mechanism according to an embodiment of the present application. [Figure 5] Figure 5 is a schematic cross-sectional diagram of a back clip according to an embodiment of the present application.

Explanation of Reference Numerals

[0024] 10 Housing 11 First Limit Portion 12 Third Limit Portion 20 Handle 21 Handle Body 22 Handle Connecting Rod 221 First Protrusion 23 Fourth Limit Portion 30 First Buckle 31 Second Protrusion 32 Second Limit Portion 33 Toggle Portion The stroke conversion mechanism 41 First Connecting Rod 411 First Engagement Portion 412 Second Engagement Portion 413 Relief Groove 42 Second Connecting Rod 421 Third Engagement Portion 422 Fourth Engagement Portion 43. First axis of rotation 44 Second axis of rotation 50 Reverse Connecting Rods 60. Second buckle 71 First reset member 72 Second reset member 73 Third reset member 80 Ball Plungers [Modes for carrying out the invention]

[0025] In the following description, specific details of particular system structures and technologies are presented for illustrative purposes only, not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should recognize that the present invention can be carried out in other embodiments without these specific details. Otherwise, detailed descriptions of well-known systems, apparatus, circuits, and methods are omitted so as not to interfere with the description of the present invention.

[0026] Hereinafter, specific embodiments of the present application will be described with reference to the attached drawings in order to more clearly explain the embodiments of the application or the technical proposals in the prior art. Clearly, the drawings in the following description are only a few embodiments of the present application, and a person skilled in the art can obtain other drawings and other embodiments based on these drawings, without paying the labor of inventive step.

[0027] To simplify the drawings, each drawing schematically shows only the parts relevant to the present application and does not represent the actual structure of the product. Furthermore, to make the drawings easy to understand, some drawings schematically illustrate only one of the components having the same structure or function, or only one component is shown. In this application, "one" may mean not only "only one" but also "one or more."

[0028] Furthermore, it should be understood that the term "and / or" as used in this specification and the attached claims means and includes any combination of one or more of the items listed in relation to this specification, and all possible combinations thereof.

[0029] In this specification, unless otherwise explicitly defined and limited, the terms “attachment,” “connection,” and “connection” should be understood in a broad sense, for example, a fixed connection, a detachable connection, or an integral connection. Furthermore, it may be a mechanical connection or an electrical connection. Furthermore, it may be a direct connection, an indirect connection via an intermediate medium, or a connection between the interiors of two elements. Those skilled in the art will be able to specifically understand the concrete meaning of the above terms in this application.

[0030] In the embodiments shown in the drawings, the directions such as up, down, left, right, front, and back are relative, not absolute, when describing the configuration and operation of each component, and do not restrict the direction in which the product is actually used.

[0031] Furthermore, in the description of this application, ordinal numbers such as "first" and "second" are used solely to distinguish and describe related objects, and cannot be understood as indicating or suggesting the relative importance or order between related objects.

[0032] As shown in Figures 1 and 2, the Disclosure provides, in one or more embodiments, a back clip comprising a housing 10, a handle 20, a first buckle 30, and a stroke conversion mechanism 40, wherein the handle 20 is movably positioned in the housing 10 along a first direction, the first buckle 30 is movably positioned in the housing 10 along a first direction, and the stroke conversion mechanism 40 is provided inside the housing 10, with one end linked to the handle 20 and the other end linked to the first buckle 30, wherein when the handle 20 is moved in the first direction, the stroke conversion mechanism 40 drives the first buckle 30 to move in the same direction along the first direction, and the distance the first buckle 30 moves in the first direction is smaller than the distance the handle 20 moves in the first direction.

[0033] Specifically, the housing 10 has a flattened box-like or flattened plate-like structure as a whole, and is equipped with a handle 20, a first buckle 30, and a stroke conversion mechanism 40, and is for fixing and supporting an electronic device. The handle 20 is slidably fitted into a guide groove of the housing 10 and is reciprocally movable in a first direction, which may be the longitudinal direction or the width direction of the housing 10. Part of the handle 20 is located outside the housing 10, allowing the user to operate the handle 20 and move the handle 20 in the first direction, while the other part of the handle 20 is located inside the housing 10, enabling interlocking with the stroke conversion mechanism 40 and driving the stroke conversion mechanism 40 during the movement process. For example, the handle 20 comprises a handle body 21 and a handle connecting rod 22, the handle body 21 being located on the outside of the housing and the handle connecting rod 22 being located on the inside of the housing, and the handle body 21 being fixedly connected to or integrally provided with the handle connecting rod 22 to achieve synchronous movement between the handle body 21 and the handle connecting rod 22.

[0034] The first buckle 30 is provided on either side of the housing 10, and the tip of the first buckle 30 is provided with a hook-shaped clamp portion for engaging with the electronic device frame. The first buckle 30 is reciprocally movable in a first direction, and the electronic device can be secured by moving the first buckle 30 to a predetermined position toward the center of the housing 10 along the first direction. When the first buckle 30 moves toward the center of the housing 10 along the first direction, the electronic device can be released, and at this time, the electronic device can be removed from the back clip.

[0035] The stroke conversion mechanism 40 is positioned between the handle 20 and the first buckle 30 and converts the long-distance movement of the handle 20 in the first direction into a short-distance movement of the first buckle 30 in the same direction. This solves the problem that even if the displacement distance of the first buckle 30 is limited by the frame structure of the housing 10, the handle 20 can still obtain a sufficiently long operating stroke. This provides a clear tactile feel and clear feedback when the user operates the handle 20, reduces the probability of misoperation, and improves the user experience.

[0036] In some embodiments, as shown in Figures 1 to 3, the stroke conversion mechanism 40 comprises a first connecting rod 41 and a second connecting rod 42, the first connecting rod 41 and the second connecting rod 42 are each rotatably mounted in the housing 10, one end of the first connecting rod 41 is interlocked with the handle 20, and the other end of the first connecting rod 41 is interlocked with one end of the second connecting rod 42, and the second connecting The other end of the connecting rod 42 is linked to the first buckle 30, and when the handle 20 moves in the first direction, the first connecting rod 41 is rotationally driven, and when the first connecting rod 41 rotates, the second connecting rod 42 is rotationally driven, and the direction of rotation of the second connecting rod 42 is opposite to the direction of rotation of the first connecting rod 41, so when the second connecting rod 42 rotates, the first buckle 30 is moved in the first direction.

[0037] Inside the housing 10 are a first pivot shaft 43 and a second pivot shaft 44. A first connecting rod 41 is pivotally connected to the housing 10 via the first pivot shaft 43, and the first pivot shaft 43 forms the pivot center of the first connecting rod 41, and is located between both ends of the first connecting rod 41. A second connecting rod 42 is pivotally connected to the housing 10 via a second pivot shaft 44, and the second pivot shaft 44 forms the pivot center of the second connecting rod 42, and is located between both ends of the second connecting rod 42. The axial direction of the first pivot shaft 43 and the axial direction of the second pivot shaft 44 are arranged parallel to each other and both are perpendicular to the plane in which the housing 10 is located.

[0038] When the handle 20 moves in the first direction, the interlocking of the handle 20 and the first connecting rod 41 drives the first connecting rod 41 to rotate clockwise or counterclockwise. When the first connecting rod 41 rotates, the second connecting rod 42 rotates in the opposite direction. That is, when the first connecting rod 41 rotates clockwise, the second connecting rod 42 rotates counterclockwise. When the first connecting rod 41 rotates counterclockwise, the second connecting rod 42 rotates clockwise. When the second connecting rod 42 rotates, it moves the first buckle 30 along the first direction in the same direction as the handle 20.

[0039] In some embodiments, as shown in Figure 3, a first projection 221 is provided on the side of the handle 20 closest to the first connecting rod 41, and a first engaging portion 411 is provided on one end of the first connecting rod 41, with the first engaging portion 411 in contact with the driving surface of the first projection 221. When the handle 20 moves in the first direction, the driving surface of the first projection 221 acts on the first engaging portion 411, causing the first connecting rod 41 to rotate.

[0040] The first engaging portion 411 of the first connecting rod 41 is always in contact with the driving surface of the first projection 221, and as soon as the handle 20 starts to move, force is immediately transmitted seamlessly to the first connecting rod 41 via the driving surface of the first projection 221, eliminating idle stroke and achieving "zero delay" startup.

[0041] In some embodiments, as shown in Figure 3, a second engaging portion 412 is provided at the other end of the first connecting rod 41, and a third engaging portion 421 is provided at one end of the second connecting rod 42, the third engaging portion 421 having a passive surface that contacts the second engaging portion 412. When the first connecting rod 41 rotates, the second engaging portion 412 slides along the passive surface of the third engaging portion 421, pressing against the third engaging portion 421 and driving the second connecting rod 42 to rotate.

[0042] The second engaging portion 412 is always joined to the passive surface of the third engaging portion 421. When the first connecting rod 41 rotates, the second engaging portion 412 slides along the passive surface of the third engaging portion 421, driving the second connecting rod 42 to rotate synchronously, forming a continuous rolling-sliding compound motion. This eliminates the transmission airway and ensures the instantaneousness and precision of force transmission between the first connecting rod 41 and the second connecting rod 42.

[0043] In some embodiments, as shown in Figure 3, a fourth engaging portion 422 is provided at the other end of the second connecting rod 42, and a second projection 31 is provided on the side of the first buckle 30 closer to the second connecting rod 42, the second projection 31 having a passive surface that contacts the fourth engaging portion 422. When the second connecting rod 42 rotates, the fourth engaging portion 422 slides along the passive surface of the second projection 31, continuously pressing against the second projection 31, thereby converting the rotational motion of the second connecting rod 42 into linear motion of the first buckle 30 in a first direction.

[0044] The fourth engaging portion 422 of the second connecting rod 42 is always in contact with the second projection 31, and as the second connecting rod 42 rotates, the fourth engaging portion 422 performs a rolling-sliding compound motion along the passive surface of the second projection 31, continuously pressing the second projection 31 in the first direction during the rotation process of the second connecting rod 42, thereby achieving synchronous movement between the first buckle 30 and the handle 20.

[0045] Preferably, the surface of the first engaging portion 411 facing the first projection 221 is arc-shaped, the surface of the second engaging portion 412 facing the third engaging portion 421 is arc-shaped, and the surface of the fourth engaging portion 422 facing the second projection 31 is arc-shaped. The interlocking of the handle 20 and the first connecting rod 41, the interlocking of the first connecting rod 41 and the second connecting rod 42, and the fitting of the second connecting rod 42 and the first buckle 30 are such that all three opposing surfaces are arc-shaped, forming a rolling-sliding compound motion, maintaining line contact at all times, reducing frictional force between the fitting surfaces, ensuring continuous and smooth torque transmission, and avoiding jamming.

[0046] In some embodiments, a relief groove 413 is provided on the first connecting rod 41 adjacent to the first engaging portion 411, and the relief groove 413 is for relieving the first projection 221 when the first connecting rod 41 rotates. The first projection 221 is a rigid cantilever or integrated boss provided on the handle 20, and when the first connecting rod 41 rotates around its center of rotation, the first projection 221 and the first connecting rod 41 interfere with each other. By providing the first connecting rod 41 with a relief groove 413 that opens in the shape of a notch or cavity, the first projection 221 can be contained within the relief groove 413 no matter how large the rotation angle of the first connecting rod 41 is, and the first projection 221 and the first connecting rod 41 do not mechanically collide, allowing for continuous and smooth rotation.

[0047] In some embodiments, as shown in Figures 1 and 2, the housing 10 is provided with a first limit portion 11, and the first buckle 30 is provided with a second limit portion 32. The first limit portion 11 engages with the second limit portion 32 to restrict the movement stroke of the first buckle 30 in a first direction. The first limit portion 11 may be a limit block, and the second limit portion 32 may be a limit groove, which extends along a first direction. When the first buckle 30 moves until the limit block is positioned at one end of the limit groove, the movement of the first buckle 30 stops, the stroke of the first buckle 30 is locked to a set value, and collision damage between the first buckle 30 and other parts is avoided. Furthermore, the engagement between the first limit portion 11 and the second limit portion 32 restricts the displacement direction of the first buckle 30, allowing it to move only in the first direction without lateral displacement. In other embodiments, the first limit portion 11 may be a limit groove and the second limit portion 32 may be a limit block, or both the first limit portion 11 and the second limit portion 32 may be limit blocks, and the first buckle 30 stops moving when it reaches contact with the two limit blocks.

[0048] In some embodiments, the housing 10 is provided with a third limit portion 12, and the handle 20 is provided with a fourth limit portion 23. The third limit portion 12 engages with the fourth limit portion 23 to restrict the movement stroke of the handle 20 in the first direction, allowing the handle 20 to move only in the first direction and preventing it from deviating from the first direction during movement. In this embodiment, the third limit portion 12 is a limit block and the fourth limit portion 23 is a limit groove, but in other embodiments, the third limit portion 12 may be a limit groove and the fourth limit portion 23 may be a limit block. The movement restriction may be defined by the limiting structure of the handle 20 or by the limiting structure of the first buckle 30.

[0049] In some embodiments, as shown in Figure 4, the first lever arm length L1, from the point of application between the first connecting rod 41 and the handle 20 to the pivot center of the first connecting rod 41, is greater than the second lever arm length L2, from the point of application between the first connecting rod 41 and the second connecting rod 42 to the pivot center of the first connecting rod 41. The third lever arm length L3, from the point of application between the second connecting rod 42 and the first buckle 30 to the pivot center of the second connecting rod 42, is less than or equal to the fourth lever arm length L4, from the point of application between the second connecting rod 42 and the first connecting rod 41 to the pivot center of the second connecting rod 42.

[0050] In this embodiment, the pivot point of the first connecting rod 41 is the center of the first rotation axis 43 in the embodiment described above, and the pivot point of the second connecting rod 42 is the center of the second rotation axis 44 in the embodiment described above. The point of application between the first connecting rod 41 and the handle 20 is the instantaneous contact point where direct force transmission occurs between the handle and the first connecting rod 41 during the movement process, i.e., the actual contact position between the first projection 221 of the handle 20 and the first engaging portion 411 of the first connecting rod 41. Similarly, the point of application between the first connecting rod 41 and the second connecting rod 42 is the actual contact position between the second engaging portion 412 and the third engaging portion 421, and the point of application between the second connecting rod 42 and the first buckle 30 is the actual contact position between the fourth engaging portion 422 and the second projection 31.

[0051] The length of the first lever arm, from the point of application between the first connecting rod 41 and the handle 20 to the pivot point of the first connecting rod 41, is greater than the length of the second lever arm, from the point of application between the first connecting rod 41 and the second connecting rod 42 to the pivot point of the first connecting rod 41. This structural design allows for the formation of a first-stage lever to reduce the handle stroke. The length of the third lever arm, from the point of application between the second connecting rod 42 and the first buckle 30 to the pivot center of the second connecting rod 42, is less than or equal to the length of the fourth lever arm, from the point of application between the second connecting rod 42 and the first connecting rod 41 to the pivot center of the second connecting rod 42. The second lever maintains or continues to reduce the stroke, and when the two levers are superimposed, the stroke of the first buckle 30 in the first direction can be made smaller than the stroke of the handle 20 in the first direction. For example, when the handle 20 moves 5 mm, the setting of the first connecting rod 41 and the second connecting rod 42 allows the first buckle 30 to move 2 mm. In practice, the lengths of the first lever arm, second lever arm, third lever arm, and fourth lever arm may be designed according to the actual desired stroke ratio between the handle 20 and the first buckle 30. In this embodiment, the actual stroke ratio between the handle 20 and the first buckle 30, as well as the lengths of the first lever arm, the second lever arm, the third lever arm, and the fourth lever arm, are not specifically limited.

[0052] As shown in Figures 1 and 2, some embodiments further include a reverse connecting rod 50 and a second buckle 60, the reverse connecting rod 50 being rotatably mounted in the housing 10 and interlocked with the first buckle 30, so that when the first buckle 30 moves in the first direction, the reverse connecting rod 50 synchronously drives the second buckle 60 to move in the opposite direction along the first direction.

[0053] The first buckle 30 and the second buckle 60 are provided on the top and bottom or left and right sides of the housing 10, respectively, and in the locked state, the first buckle 30 and the second buckle 60 hook onto the frames on both sides of the electronic device, respectively. When unlocking, the user pulls the handle 20, which drives the first buckle 30 via the stroke conversion mechanism 40 to move it outward in the first direction. The lower end of the first buckle 30 is provided with a toggle portion 33, which contacts the reverse connecting rod 50. When the first buckle 30 moves outward along the first direction, the toggle portion 33 rotates the reverse connecting rod 50 around its central axis of rotation. As the reverse connecting rod 50 rotates, the second buckle 60 moves in the opposite direction along the first direction. That is, when the first buckle 30 moves upward, the second buckle 60 moves downward, allowing the first buckle 30 and the second buckle 60 to release the electronic device synchronously. Similarly, the second buckle 60 and the housing 10 are each provided with limit portions, and the movement stroke of the second buckle is restricted by the engagement of the two limit portions.

[0054] In this embodiment, by providing a reverse connecting rod 50 that is linked to the first buckle 30, both buckles can be moved simultaneously by pulling the handle 20 once, and thus unlocking can be completed with one hand, improving the convenience of operation. 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 synchronously in opposite directions, the clamping force is symmetrical, the electronic device receives force uniformly, and loosening or damage to the electronic device due to an imbalance on one side is avoided.

[0055] The rotating lever arms on both sides of the reverse connecting rod 50 can be adjusted as needed from the extension of the second buckle 60, thereby adjusting the distance the second buckle moves in the first direction. Preferably, the lengths of the rotating lever arms on both sides of the reverse connecting rod 50 are equal, that is, the rotation center of the reverse connecting rod 50 is the center of the reverse connecting rod, and the distance from one end of the reverse connecting rod 50 to the rotation center of the reverse connecting rod 50 is equal to the distance from the other end of the reverse connecting rod 50 to the rotation center of the reverse connecting rod 50, so that the distance the second buckle 60 and the first buckle 30 move in the first direction is the same, thereby achieving equidistant movement between the first buckle 30 and the second buckle 60.

[0056] Furthermore, there are two first buckles 30 and two second buckles 60, with two first buckles 30 on each side of the handle 20. A stroke conversion mechanism is provided between the first buckles 30 and the handle 20, allowing the first buckles 30 to be driven and moved via the handle 20. The two second buckles 60 are arranged in a one-to-one correspondence with the two first buckles 30, and each second buckle 60 is linked to one first buckle 30 via a reverse connecting rod 50, allowing the movement and unlocking of the second buckles 60 by the first buckles 30 to be driven synchronously.

[0057] Some embodiments, as shown in Figures 1 and 2, further include a first reset member 71 and a second reset member 72, the first reset member 71 having one end connected to the housing 10 and the other end connected to the first buckle 30, and providing an elastic force to return the first buckle 30 to its original position. The second reset member 72 has one end connected to the housing 10 and the other end connected to the second buckle 60, and provides an elastic force to return the second buckle 60 to its original position.

[0058] When unlocking, the user pulls the handle 20, and the stroke conversion mechanism 40 drives the first buckle 30 to move in the first direction, while the first buckle 30 drives the second buckle 60 to move in the opposite direction along the first direction, thereby unlocking the device. 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 reset member 71 causes the first buckle 30 to move back to its initial position along the first direction, and the elastic force of the second reset member 72 causes the second buckle 60 to return to its original position, thereby achieving automatic return locking of the first buckle 30 and the second buckle 60.

[0059] In this embodiment, the first reset member 71 and the second reset member 72 may be springs, elastic pieces, etc. The number of first reset members 71 is the same as the number of first buckles 30, and the first reset members 71 and the first buckles 30 are connected in a one-to-one ratio. The number of second reset members 72 is the same as the number of second buckles 60, and the second reset members 72 and the second buckles 60 are connected in a one-to-one ratio.

[0060] In this embodiment, by providing a first reset member 71 and a second reset member 72, automatic resetting of the first buckle 30 and the second buckle 60 can be achieved. This eliminates the need to manually push back the first buckle 30 and the second buckle 60, allowing them to open simply by pulling and lock simply by releasing, making one-handed operation more convenient.

[0061] Furthermore, the system further includes a third reset member 73, one end of which is connected to the housing 10 and the other end of which is connected to the handle 20, and when the handle 20 is pulled and moved by an external force, the handle 20 is automatically reset via the third reset member 73.

[0062] In some embodiments, as shown in Figure 5, the system further includes a ball plunger 80 and an elastic member, the elastic member holding the ball plunger 80 so that it can move back and forth within the housing 10, and the handle 20 is provided with a limit groove, and when the handle 20 moves to a limit position along a first direction, the elastic force of the elastic member locks the ball plunger 80 into the limit groove.

[0063] When the handle 20 moves to its limit position along the first direction, the ball plunger 80 is locked into the limit groove by the action of the elastic member, generating clear tactile and auditory feedback, allowing the user to immediately sense that the unlock limit position has been reached. At this point, the user can attach or detach 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, locking the electronic device.

[0064] In some embodiments, the stroke conversion mechanism 40 comprises a gear, a first rack, and a second rack, the gear being rotatably mounted in the housing 10, the gear including a large-diameter gear and a small-diameter gear integrally arranged coaxially, the first rack being fixed to the handle 20 and the second rack being fixed to the first buckle 30, the first and second racks being parallel to the first direction and located on the same side of the gear, the first rack meshing with the large-diameter gear and the second rack meshing with the small-diameter gear, the pitch circle radius of the large-diameter gear being larger than the pitch circle radius of the small-diameter gear, and the distance the first buckle 30 travels in the first direction being smaller than the distance the handle 20 travels in the first direction.

[0065] In this embodiment, the direction in which the rotation axes of the large-diameter gear and the small-diameter gear extend (axial direction) is parallel to the plane on which the housing 10 is located and perpendicular to the first direction. The first rack and the second rack may each be parallel to the first direction. For example, if the first direction is the width direction of the housing 10, the rotation axes of the large-diameter gear and the small-diameter gear extend in the longitudinal direction of the housing 10, and the first rack and the second rack are arranged to extend in 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.

[0066] The user pulls the handle 20 in the first direction, moving a distance L H Move only that much, and the first rack rotates the large diameter gear at an angle θ=L H The gear is driven to / R, where R is the pitch circle radius of the large diameter gear, and the coaxial small diameter gear is rotated synchronously by the same angle θ, and the small diameter gear drives the second rack and the first buckle 30 to move along the first direction by the same distance LC = θ × r, where r is the pitch circle radius of the small diameter gear. Since R > r, LC = (r / R) × L H <L H This results in stroke compression.

[0067] In this embodiment, the stroke ratio between the first buckle 30 and the handle 20 is i = r / R, and exemplary, R = 5 mm, and when r = 2 mm, i = 2.5, so that a buckle stroke of 2 mm can be achieved with a handle stroke of 5 mm. By arranging the first rack and the second rack on the same side and parallel to the first direction, the first buckle 30 and the handle 20 can always move linearly in the same direction, reducing rail wear and improving lifespan without lateral force components.

[0068] Furthermore, this disclosure provides an embodiment of an electronic device assembly comprising an electronic device and a back clip as described in any of the embodiments described above, wherein the electronic device is detachably attached to the back clip, and the configuration diagram of the back clip is shown in Figures 1 to 5. The electronic device may be fixed to the back clip, and the electronic device may be a mobile phone, tablet terminal, reader, etc. The back clip may be a hand strap type back clip or a bracket type back clip, and the hand strap type back clip is provided with a hand strap so that the user can hold or secure it on their wrist. The bracket type back clip is equipped with a bracket which is used to stably place the back clip on a table or other flat surface, and the angle-adjustable support structure of the bracket can adjust the viewing angle of the electronic device according to the user's needs, can meet the user's needs for use in different scenes, and improves the practicality and convenience of the back clip.

[0069] In the above embodiments, emphasis is placed on the description of each embodiment, and for parts that are not described or explained in detail in a particular embodiment, you can refer to the relevant descriptions in other embodiments.

[0070] Furthermore, the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present application, and a person ordinary in the art can make several improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also be considered within the scope of protection of the present application.

Claims

1. Housing and A handle is provided in the housing so as to be movable along a first direction, A first buckle is disposed in the housing so as to be movable along the first direction, A back clip characterized by comprising: a stroke conversion mechanism provided within the housing, one end of which is linked to the handle and the other end of which is linked to the first buckle, wherein when the handle moves in the first direction, the first buckle moves in the same direction along the first direction, and the distance the first buckle moves in the first direction is smaller than the distance the handle moves in the first direction.

2. The stroke conversion mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being rotatably mounted to the housing, One end of the first connecting rod is linked to the handle, the other end of the first connecting rod is linked to one end of the second connecting rod, and the other end of the second connecting rod is linked to the first buckle. The back clip according to claim 1, characterized in that when the handle moves in a first direction, the first connecting rod is rotationally driven, when the first connecting rod rotates, the second connecting rod is rotationally driven, and the direction of rotation of the second connecting rod is opposite to the direction of rotation of the first connecting rod, and when the second connecting rod rotates, the first buckle is moved in the first direction.

3. A first projection is provided on the side of the handle closest to the first connecting rod, and a first engaging portion is provided at one end of the first connecting rod, the first engaging portion being in contact with the driving surface of the first projection. The back clip according to claim 2, characterized in that when the handle moves in the first direction, the driving surface of the first projection acts on the first engagement portion, causing the first connecting rod to rotate.

4. A second engaging portion is provided at the other end of the first connecting rod, and a third engaging portion is provided at one end of the second connecting rod, and the third engaging portion has a passive surface that contacts the second engaging portion. The back clip according to claim 3, characterized in that when the first connecting rod rotates, the second engaging portion slides along the passive surface of the third engaging portion and presses against the third engaging portion, thereby rotationally driving the second connecting rod.

5. A fourth engaging portion is provided at the other end of the second connecting rod, and a second projection is provided on the side of the first buckle closest to the second connecting rod, the second projection having a passive surface that contacts the fourth engaging portion. The back clip according to claim 4, characterized in that when the second connecting rod rotates, the fourth engaging portion slides along the passive surface of the second projection and continues to press against the second projection, thereby converting the rotational motion of the second connecting rod into linear motion of the first buckle in the first direction.

6. In the first engaging portion, the surface facing the first protrusion is arc-shaped. In the second engagement portion, the surface facing the third engagement portion is arc-shaped. The back clip according to claim 5, characterized in that the surface of the fourth engaging portion facing the second protrusion is arc-shaped.

7. The back clip according to claim 3, wherein the first connecting rod is provided with a relief groove adjacent to the first engaging portion, and the relief groove is for relieving the first protrusion when the first connecting rod rotates.

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

9. The back clip according to claim 8, characterized in that the housing is provided with a third limit portion, the handle is provided with a fourth limit portion, the third limit portion engages with the fourth limit portion to restrict the movement stroke of the handle in the direction of movement and in the first direction.

10. The length of the first lever arm, from the point of application between the first connecting rod and the handle to the center of rotation of the first connecting rod, is greater than the length of the second lever arm, from the point of application between the first connecting rod and the second connecting rod to the center of rotation of the first connecting rod. The back clip according to claim 2, characterized in that the length of the third lever arm from the point of application between the second connecting rod and the first buckle to the center of rotation of the second connecting rod is less than or equal to the length of the fourth lever arm from the point of application between the second connecting rod and the first connecting rod to the center of rotation of the second connecting rod.

11. The system further comprises a reverse connecting rod and a second buckle, the reverse connecting rod being rotatably mounted in the housing and linked to the first buckle, The back clip according to claim 1, characterized in that when the first buckle moves in the first direction, the reverse connecting rod synchronously drives the second buckle to move in the opposite direction along the first direction.

12. The device further comprises a first reset member and a second reset member, the first reset member having one end connected to the housing and the other end connected to the first buckle, and providing an elastic force to return the first buckle to its original position. The back clip according to claim 11, characterized in that the second resetting member has one end connected to the housing and the other end connected to the second buckle, and is for providing an elastic force to return the second buckle to its original position.

13. The back clip according to claim 1, further comprising a ball plunger and an elastic member, wherein the elastic member holds the ball plunger so as to be able to move back and forth in the housing, and the handle is provided with a limit groove, and when the handle moves to a limit position in the first direction, the ball plunger is locked in the limit groove by the elastic force of the elastic member.

14. The stroke conversion mechanism comprises a gear, a first rack, and a second rack, the gear being rotatably mounted in the housing, and the gear comprising a large-diameter gear and a small-diameter gear integrally arranged coaxially. The first rack is fixed to the handle, the second rack is fixed to the first buckle, and the first and second racks 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 back clip according to claim 1, characterized in that the pitch circle radius of the large-diameter gear is greater than the pitch circle radius of the small-diameter gear, and the distance the first buckle travels in the first direction is less than the distance the handle travels in the first direction.

15. An electronic device assembly comprising an electronic device and a back clip according to any one of claims 1 to 14, wherein the electronic device is detachably attached to the back clip.

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