Angle-switchable lock catch

Abstract

The utility model discloses a lock catch capable of switching angles, which comprises a first connecting assembly, a second connecting assembly and a locking assembly, the second connecting assembly comprises a shell, a rotating part and a limiting part, wherein the rotating part and the limiting part are arranged in the shell. The rotating part is provided with a clamping hole, and the limiting part is matched with the rotating part to form positionable one-way rotating limiting for the rotating part. In the state that the first connecting assembly and the second connecting assembly are connected through cooperation of the clamping part and the clamping hole, if the clamping part rotates in the first hour hand direction, the rotating part rotates synchronously along with the clamping part; and if the clamping part rotates by a preset angle along the second hour hand direction, the clamping part can be pulled out of the clamping hole. According to the lock catch, connection and disassembly of the two parts can be achieved, meanwhile, controllable angle adjustment between the two parts is allowed in the connection state, the adjusted angle can be positioned, deviation is not prone to occurring, and the defects of an existing lock catch in the aspect of angle adjustment are effectively overcome.

Description

Adjustable angle latch Technical Field

[0001] This utility model relates to the field of locking technology, and in particular to a locking mechanism with switchable angles. Background Technology

[0002] Existing magnetic locks mostly use pure magnetic attraction plus a simple snap-fit ​​structure for fixation (such as Chinese patents with publication numbers CN104853636A and CN117882923A). Although they can achieve quick connection and disassembly of the two parts, the relative positions of the two parts are fixed after the snap-fit ​​is locked. They lack the function of rotation limit for the relative positions of the two parts, which makes it impossible to make controllable angle adjustments to the relative positions of the two parts.

[0003] Some patents (such as the Chinese patent with publication number CN101925313A) use magnetic attraction and buckle to fix the two parts. Since the magnetic lock head is cylindrical, the relative position between the two parts can rotate around the magnetic lock head. However, the disadvantage is that the relative position between the two parts cannot be locked by the buckle itself during the rotation, which makes their relative position easy to shift uncontrollably due to external force. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a lock with a switchable angle, so that the connected lock can be angled and the adjusted angle can be positioned and is not easily deviated.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to provide a lock with a switchable angle, which includes:

[0006] The first connecting component is provided with a snap-fit ​​part;

[0007] The second connecting component includes a rotating part and a limiting part; the limiting part cooperates with the rotating part to form a positionable unidirectional rotational limiting for the rotating part.

[0008] When the first connecting component and the second connecting component are connected to each other, the locking part and the rotating part are engaged with each other. If the locking part rotates in the first clockwise direction, the rotating part rotates synchronously in the first clockwise direction with the locking part, and the rotation angle can be locked by the limiting part during the rotation.

[0009] Furthermore, the second connecting assembly also includes a housing; the rotating part and the limiting part are disposed within the housing; wherein the rotating part is provided with a locking hole;

[0010] When the first connecting component and the second connecting component are connected to each other, the snap-fit ​​part is inserted into the snap hole and the locking lug and the locking tongue are mutually engaged to form an axial limit, thereby preventing the snap-fit ​​part from disengaging from the snap hole; wherein, the locking lug and the locking tongue are respectively disposed in the snap-fit ​​part and the rotating part.

[0011] When in the connected state, if the locking part rotates in the first clockwise direction, the rotating part rotates synchronously with the locking part in the first clockwise direction under the mutual engagement of the lock mouth and the lock tongue; if the locking part rotates in the second clockwise direction opposite to the first clockwise direction, the rotating part is restricted by the limiting part and remains stationary, the lock mouth and the lock tongue move relative to each other, and when the angle of relative movement reaches a predetermined value, the axial limiting is released, and the locking part is allowed to disengage from the locking hole.

[0012] Furthermore, the rotating part includes a ratchet ring;

[0013] The limiting part includes a pawl, which elastically abuts against the teeth of the ratchet ring to form a multi-angle positioning structure that rotates in one direction and engages in stages.

[0014] Furthermore, the locking port is located on the outer wall of the latching part, and the locking tongue is located in the rotating part.

[0015] Furthermore, the rotating part also includes a locking spring plate that is fixed relative to and located inside the ratchet tooth ring, the locking spring plate being a non-closed ring structure; wherein, the locking tongue is disposed on the inner wall of the locking spring plate.

[0016] Furthermore, the rotating part also includes a toothed ring top cover and a ratchet base;

[0017] The toothed ring top cover is fixed above the ratchet toothed ring, and the locking hole is located in the middle of the toothed ring top cover;

[0018] The locking spring is disposed in the inner cavity of the toothed ring inside the ratchet ring;

[0019] The ratchet base is fixed below the ratchet tooth ring, covering the inner cavity of the tooth ring.

[0020] Furthermore, the toothed ring top cover, ratchet toothed ring, locking spring, and ratchet base form a synchronously rotating unit through a positioning structure.

[0021] Furthermore, the walls at both ends of the lock opening along the annular direction are the first wall and the second wall, respectively; the walls at both ends of the lock tongue along the annular direction are the third wall and the fourth wall, respectively.

[0022] When the latching part rotates in the first clockwise direction, the first wall surface and the third wall surface engage with each other to drive the locking spring to rotate.

[0023] When the locking part rotates in the second clockwise direction, the second wall surface passes over the fourth wall surface and moves relative to it. When the angle of relative movement reaches a predetermined value, the axial limit is released.

[0024] Furthermore, the latching part is provided with a protrusion below the lock opening, the circumferential surface of the protrusion is inclined and is a first inclined surface, and the connection between the protrusion and the lock opening forms a limiting blocking surface.

[0025] The top of the latch has a second inclined surface that matches the first inclined surface, and the bottom has a flat bottom surface.

[0026] During the process of inserting the snap-fit ​​part into the snap-fit ​​hole, the first inclined surface compresses the second inclined surface, causing the radius of the locking spring to expand;

[0027] After the latching part is fully inserted into the latching hole, the limiting blocking surface and the flat bottom surface of the locking tongue are pressed together to form the axial limiting.

[0028] Furthermore, the outer wall of the latching part has two opposing locking slots; the inner wall of the locking spring has two opposing locking tongues.

[0029] Furthermore, the snap-fit ​​portion has two first protrusions and two second protrusions formed on its circumferential surface;

[0030] The two first protrusions are symmetrically arranged on the circumferential surface of the latching portion, and one side wall of the first protrusion in the circumferential direction is the first wall surface, and the other side wall surface is an inclined transition surface; and the side of the first protrusion away from the axis of the latching portion is the outer edge of the first protrusion, and the radius of the outer edge of the first protrusion is equal to the radius of the limiting blocking surface.

[0031] The two second protrusions are also symmetrically arranged on the circumferential surface of the latching portion, and one side wall of the second protrusion in the circumferential direction is the second wall surface, and the other side wall surface is a smooth transition surface, and the smooth transition surface extends to connect with the adjacent inclined transition surface; and the side of the second protrusion away from the axis of the latching portion is the outer edge of the second protrusion, and the radius of the outer edge of the second protrusion is smaller than the radius of the limiting blocking surface;

[0032] When the lock and the latch are engaged, as the engaging part rotates in the second clockwise direction and the rotation angle reaches the predetermined value, the second wall surface first passes over the fourth wall surface it is in contact with, and then the inclined transition surface passes over the fourth wall surface, until the outer edges of the two first protrusions respectively press against the radial inner walls of the two latches, the relative movement angle between the lock and the latch reaches the predetermined value, and the axial limit is released.

[0033] Furthermore, a first magnetic element is provided inside the snap-fit ​​part, and a second magnetic element is provided inside the housing;

[0034] When the first connecting component and the second connecting component are connected to each other, the first magnetic component and the second magnetic component attract each other.

[0035] The beneficial effects of the above technical solution are as follows:

[0036] The latch provided by this utility model enables quick connection and disassembly of two components. At the same time, it allows for controllable angle adjustment between the two components while they are connected, and the adjusted angle can be positioned and is not prone to displacement. This effectively solves the shortcomings of existing latches in terms of angle adjustment, expands the application scenarios of the latch, and is especially suitable for scenarios where there are flexible requirements for the relative angle between the connected components. Attached Figure Description

[0037] Figure 1 is a structural diagram of the latch provided in Embodiment 1;

[0038] Figure 2 is an exploded view of Figure 1;

[0039] Figure 3 is a view of Figure 2 from a bottom angle;

[0040] Figure 4 is a separate view of the snap-fit ​​part and the locking spring in Figure 2;

[0041] Figure 5 is a view from below in Figure 4;

[0042] In Figure 6, the upper view is a frontal view of the snap-fit ​​part, and the lower view is a sectional view along the BB direction of the upper view.

[0043] Figure 7 is a diagram showing the state when the snap-fit ​​part and the locking spring piece in Figure 4 are engaged and fitted together.

[0044] Figure 8 is a sectional view along line AA of Figure 1;

[0045] Figure 9 is a flowchart of the unlocking process in Example 1;

[0046] Figure 10 is an exploded view of the latch provided in Embodiment 2;

[0047] Figure 11 is a view of Figure 10 from a bottom angle;

[0048] Figure 12 is a structural diagram of the latch provided in Embodiment 3;

[0049] Figure 13 is an exploded view of Figure 12;

[0050] Figure 14 is a view of Figure 13 from a bottom angle;

[0051] Figure 15 is a separate view of the snap-fit ​​part and the locking spring in Figure 13;

[0052] Figure 16 is a cross-sectional view of Figure 12 after it has been cut along a transverse plane;

[0053] Figure 17 is a diagram showing the state of axial unlocking achieved by rotating the locking part counterclockwise based on Figure 16. Detailed Implementation

[0054] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0055] Traditionally, IP derivatives such as plush toys and metal badges, or personalized decorative items such as toys and figurines, are usually attached to everyday items like straps, clothing, or bags using pins or Velcro. However, this method of attachment makes it difficult to achieve a quick and stable connection, and it also fails to allow personalized decorative items to showcase their individuality from multiple angles or to display their decorative appeal.

[0056] Based on this, the present invention provides a lock with switchable angles. This lock enables quick and stable connection of personalized decorative items to equipment such as straps, clothing, or bags, and has a unique angle adjustment function, allowing personalized decorative items to be displayed from multiple angles, thereby better meeting users' requirements for diverse and personalized expressions.

[0057] Example 1:

[0058] Referring to Figures 1 to 8, the switchable angle latch provided by this utility model includes a first connecting component 100 and a second connecting component 200.

[0059] The first connecting component 100 is used as a male fastener during connection and is provided with a snap-fit ​​part 110.

[0060] The second connecting component 200 is used as a female buckle during connection, and includes a rotating part 220 and a limiting part 230. The limiting part 230 cooperates with the rotating part 220 to form a positionable unidirectional rotational limit for the rotating part 220.

[0061] When the first connecting component 100 and the second connecting component 200 are connected to each other, the locking part 110 and the rotating part 220 are engaged with each other. If the locking part 110 rotates in the first clockwise direction, the rotating part 220 rotates synchronously in the first clockwise direction with the locking part 110, and the rotation angle can be locked by the limiting part 230 during the rotation.

[0062] Based on the above structure, it can be seen that when the first connecting component 100 and the second connecting component 200 are connected to each other, the first connecting component 100 can be angled and, due to the limitation of the limiting part 230, the adjusted angle can be locked, making it less prone to displacement. This solves the current defect that the latch cannot lock the relative position between the two components through its own structure during rotation.

[0063] In a preferred embodiment, referring to Figures 2 and 3, the second connecting assembly 200 further includes a housing 210. The rotating part 220 and the limiting part 230 are disposed within the housing 210. The rotating part 220 is provided with a locking hole 2a.

[0064] When the first connecting component 100 and the second connecting component 200 are connected to each other, the locking part 110 is inserted into the locking hole 2a and the locking mouth 111 and the locking tongue 222a are mutually engaged to form an axial limit, thereby preventing the locking part 110 from disengaging from the locking hole 2a; wherein, the locking mouth 111 and the locking tongue 222a are respectively provided in the locking part 110 and the other is provided in the rotating part 220;

[0065] When in the connected state, if the locking part 110 rotates in the first clockwise direction, the rotating part 220 rotates synchronously with the locking part 110 in the first clockwise direction under the mutual engagement of the locking jaw 111 and the locking tongue 222a; if the locking part 110 rotates in the second clockwise direction opposite to the first clockwise direction, the rotating part 220 is restricted and kept stationary by the limiting part 230, and the locking jaw 111 and the locking tongue 222a move relative to each other. When the angle of relative movement reaches a predetermined value, the axial limit is released, allowing the locking part 110 to disengage from the locking hole 2a.

[0066] The aforementioned limiting part 230 cooperates with the rotating part 220 to form a positionable unidirectional rotational limiting for the rotating part 220. Positionable means that during rotation, the rotating part 220, restricted by the limiting part 230, can stop and lock at certain specific angles. This locking is typically released by applying a force of a certain magnitude along the rotatable direction to overcome the effect of the limiting part 230, allowing the rotating part 220 to continue rotating. Unidirectional rotation means that, restricted by the limiting part 230, the rotating part 220 can only rotate in one direction (such as the first clockwise direction mentioned above) and cannot rotate in the opposite direction (such as the second clockwise direction mentioned above).

[0067] In a preferred embodiment, referring to Figures 2 and 3, the rotating part 220 includes a ratchet ring 221. The limiting part 230 includes a pawl 231. The pawl 231 elastically abuts against the teeth of the ratchet ring 221, thereby giving the ratchet ring 221 the following movement: it can only rotate in one direction, and during the rotation, it forms a multi-angle positioning structure with the pawl 231 engaging in stages.

[0068] Of course, in some other embodiments, other suitable structures can be used to replace the ratchet ring 221 and pawl 231 to achieve the same positionable unidirectional rotational limiting function.

[0069] Furthermore, referring to Figures 2 and 3, the rotating part 220 also includes a locking spring 222 fixed relative to and located inside the ratchet ring 221. The locking spring 222 is a non-closed ring structure with a notch. The locking tongue 222a is disposed on the inner wall of the locking spring 222.

[0070] To ensure the stability of the two connecting components 100 and 200 after connection, in this embodiment, there are two locking slots 111, which are arranged opposite to each other on the outer side wall of the latching part 110. Correspondingly, there are also two locking tongues 222a, which are arranged opposite to each other on the inner wall of the locking spring piece 222.

[0071] Furthermore, referring to Figures 2 and 3, the rotating part 220 also includes a toothed ring top cover 223 and a ratchet base 224.

[0072] The toothed ring top cover 223 is fixed above the ratchet toothed ring 221, and the locking hole 2a is located in the middle of the toothed ring top cover 223. The toothed ring top cover 223 and the ratchet toothed ring 221 can be integrally formed, or they can be two separate parts fixed together by bonding or locking.

[0073] The locking spring 222 is disposed in the inner cavity 221a of the toothed ring inside the ratchet toothed ring 221.

[0074] The ratchet base 224 is fixed below the ratchet toothed ring 221, covering the inner cavity 221a of the toothed ring.

[0075] Furthermore, the toothed ring top cover 223, ratchet toothed ring 221, locking spring 222, and ratchet base 224 form a synchronously rotating unit through a positioning structure.

[0076] The positioning structure can take various forms, as long as it allows the four components to rotate synchronously. Specifically, the positioning structure in this embodiment is as follows:

[0077] Two first positioning holes 222b are provided on the locking spring piece 222; two positioning pins 224b are provided on the upper side of the ratchet base 224; and two second positioning holes 223a are provided on the toothed ring top cover 223.

[0078] In addition, a positioning block 224c is provided on the upper side of the ratchet base 224 opposite to the positioning post 224b, and a corresponding positioning groove 221b is provided on the lower side of the ratchet tooth ring 221 (see Figure 3).

[0079] Among them, the two positioning pins 224b each pass through the corresponding first positioning hole 222b and are inserted into the two second positioning holes 223a respectively, while the positioning block 224c is embedded in the positioning groove 221b.

[0080] Thus, the toothed ring top cover 223, ratchet toothed ring 221, locking spring 222, and ratchet base 224 form a community that can rotate synchronously through the above positioning structure.

[0081] In a preferred embodiment, referring to Figures 2 and 3, the housing 210 includes an upper cover 211 and a bottom shell 212. The upper cover 211 covers the top of the bottom shell 212 and confines the rotating part 220 and the limiting part 230 within the cavity 212a formed by the upper cover 211 and the bottom shell 212.

[0082] Preferably, the bottom of the base shell 212 is provided with an opening 212c. The bottom of the ratchet base 224 is provided with a pawl 224d, which passes through the opening 212c at the bottom of the base shell 212 and hooks in the opposite direction onto the outer edge of the opening 212c. This design not only realizes the connection between the ratchet base 224 and the base shell 212, but also allows the ratchet base 224 to rotate around the axis of the opening 212c, thereby providing a positioning basis for the unidirectional rotation of the rotating part 220.

[0083] In a preferred embodiment, a first magnetic element 120 is provided inside the snap-fit ​​portion 110, and a second magnetic element 240 is provided inside the housing 210.

[0084] Specifically, referring to Figures 3 and 4, the first magnetic component 120 is encased inside the snap-fit ​​portion 110, and the second magnetic component 240 is fixed in the preset mounting groove 224a below the ratchet base 224.

[0085] When the snap-fit ​​part 110 is inserted into the snap-fit ​​hole 2a, the first magnetic element 120 and the second magnetic element 240 are vertically aligned. Although there is a gap between them or they are separated by a solid wall, their magnetic forces are strong enough to achieve a reliable adsorption connection between the first connecting component 100 and the second connecting component 200, thereby improving the stability of the connection.

[0086] Referring to Figures 4 to 6, the wall surfaces at both ends of the lock opening 111 along the annular direction are the first wall surface 111a and the second wall surface 111b, respectively. The wall surfaces at both ends of the lock tongue 222a along the annular direction are the third wall surface 222a1 and the fourth wall surface 222a2, respectively.

[0087] When the latching part 110 rotates in the first clockwise direction (clockwise as shown in Figures 4 and 6), the first wall surface 111a and the third wall surface 222a1 engage with each other to drive the locking spring 222 to rotate.

[0088] When the latching part 110 rotates in the second clockwise direction (counterclockwise direction as shown in Figures 4 and 6), the second wall surface 111b will pass over the fourth wall surface 222a2 and move relative to it. When the angle of relative movement reaches a predetermined value, the axial limit is released.

[0089] Specifically, referring to Figures 4 to 6, in this embodiment, the latching part 110 is provided with a protrusion 112 below the lock opening 111. The circumferential surface of the protrusion 112 is inclined and is a first inclined surface 112a. The connection between the protrusion 112 and the lock opening 111 forms a limiting blocking surface 112b.

[0090] The top of the latch 222a has a second inclined surface 222a3 that matches the first inclined surface 112a (see Figure 4), and the bottom has a latch flat bottom surface 222a4 (see Figure 5).

[0091] In use, during the insertion of the latching part 110 into the latching hole 2a, the first inclined surface 112a will compress the second inclined surface 222a3, causing the radius of the locking spring piece 222 to expand, so that the protrusion 112 can smoothly pass under the latch tongue 222a. After the protrusion 112 passes under the latch tongue 222a, the latching part 110 is fully inserted into the latching hole 2a, as shown in Figure 7. At this time, the two latches 222a will respectively engage with the two lock openings 111 (if they do not engage, the latching part 110 can be slightly rotated to align the lock openings 111 with the latches 222a, and the latches 222a will then engage with the lock openings 111). At the same time, the limiting blocking surface 112b and the flat bottom surface 222a4 of the latch are closely attached to each other to form the axial limiting.

[0092] More specifically, referring to Figures 4 to 6, in this embodiment, the snap-fit ​​portion 110 has two first protrusions 110a and two second protrusions 110b formed on its circumferential surface.

[0093] Two first protrusions 110a are symmetrically arranged on the circumferential surface of the latching portion 110, and one side wall of the first protrusion 110a in the circumferential direction is the first wall surface 111a, and the other side wall surface is an inclined transition surface 110c. The first wall surface 111a is an inclined wall surface formed by recessing into the center of the first protrusion 110a (see Figure 6). Furthermore, the side of the first protrusion 110a opposite to the axis of the latching portion 110 is the outer edge 110a1 of the first protrusion, and the radius of this outer edge 110a1 is equal to the radius of the limiting blocking surface 112b (see Figure 6). The third wall surface 222a1 is an inclined wall surface formed by the protruding portion corresponding to the first wall surface 111a (see Figure 4). When the lock 111 and the lock tongue 222a are engaged, the first wall surface 111a and the third wall surface 222a1 are in contact with each other to form an interlocking structure (see Figure I in Figure 9), so that when the locking part 110 moves in the first clockwise direction, the interlocking structure can smoothly drive the locking spring 222 to rotate together.

[0094] The two second protrusions 110b are also symmetrically arranged on the circumferential surface of the latching portion 110. One side wall of the second protrusion 110b in the circumferential direction is the second wall surface 111b, and the other side wall is a smooth transition surface 110d, which extends to connect with the adjacent inclined transition surface 110c. The second wall surface 111b is a wall surface that approximately coincides with the radial direction. Furthermore, the side of the second protrusion 110b away from the axis of the latching portion 110 is the outer edge 110b1 of the second protrusion, the radius of which is smaller than the radius of the limiting blocking surface 112b (see Figure 6). The fourth wall surface 222a2 is also a wall surface that approximately coincides with the radial direction. When the lock 111 and the lock tongue 222a are engaged, the second wall surface 111b and the fourth wall surface 222a2 are close to each other. If the locking part 110 is rotated forcefully in the second clockwise direction, the second wall surface 111b can forcibly pass over the fourth wall surface 222a2, that is, break through the restriction of the fourth wall surface 222a2 (see Figure II in Figure 9). In order to enable the second wall surface 111b to successfully break through the restriction of the fourth wall surface 222a2, the locking spring 222 can be designed to have a certain degree of mobility. For example, the inner diameter of the first positioning hole 222b can be slightly larger than the outer diameter of the positioning post 224b. Thus, during the rotation of the locking part 110 in the second clockwise direction, the locking spring 222 can be slightly displaced, so as to facilitate the second wall surface 111b to smoothly pass over the fourth wall surface 222a2.

[0095] Preferably, the locking spring 222 has two symmetrical and counter-extending elastic pieces 222c at the non-closed notch. The elastic pieces 222c abut against the inner wall of the toothed ring cavity 221a. With the help of the reaction force, the locking spring 222 tends to contract inward, causing the locking tongue 222a to be continuously subjected to radial contraction force, thereby ensuring that it can be firmly locked into the locking slot 111 of the locking part 110.

[0096] During use, when the lock 111 and the latch 222a are engaged (see Figure I in Figure 9), as the engaging part 110 rotates in the second clockwise direction and the rotation angle reaches the predetermined value, the second wall surface 111b will first pass over the fourth wall surface 222a2 that it is in contact with (see Figure II in Figure 9), and then the inclined transition surface 110c will contact the fourth wall surface 222a2 that the second wall surface 111b has passed over (see Figure III in Figure 9), and then pass over the fourth wall surface 222a2 until the outer edges 110a1 of the two first protrusions respectively press against the radial inner walls of the two latches 222a (see Figure IV in Figure 9). At this time, the relative movement angle between the lock 111 and the latch 222a reaches the predetermined value, and the axial limit is released.

[0097] Therefore, during the unlocking process, since only the radius of the outer edge 110a1 of the first protrusion is equal to the radius of the limiting blocking surface 112b, the axial restriction can only be released when the outer edges 110a1 of the two first protrusions abut against the radial inner walls of the two latches 222a respectively. Otherwise, the limiting blocking surface 112b will always abut against the latch flat bottom surface 222a4 of the two latches 222a, and the axial restriction will never be released. For example, even when the outer edges 110b1 of the two second protrusions abut against the radial inner walls of the two latches 222a respectively, since the radius of the outer edge 110b1 of the second protrusion is smaller than the radius of the limiting blocking surface 112b, the outer edge of the limiting blocking surface 112b will still abut against the inner edge of the latch flat bottom surface 222a4 (see Figure II in Figure 9), causing the locking part 110 to be restricted and unable to be pulled out from the locking hole 2a, and the axial restriction is not released. Therefore, during the unlocking process, the locking part 110 actually needs to break through the limit twice in succession. The first time is when the second protrusion 110b breaks through the fourth wall surface 222a2 (that is, the process from Figure I to Figure II in Figure 9), and the second time is when the first protrusion 110a breaks through the fourth wall surface 222a2 (that is, the process from Figure III to Figure IV in Figure 9). Before the second limit breaking is initiated, the second protrusion 110b just leaves one end of the locking tongue 222a, and the first protrusion 110a just contacts the other end of the locking tongue 222a (see Figure III in Figure 9). At the same time, during the two breakthroughs, the locking part 110 also needs to rotate a large angle (usually greater than 100°) before the axial limit can be completely released.

[0098] The advantages of this design are: it effectively increases the difficulty of accidental unlocking; when accidentally touched, the locking part 110 needs to break through the limit twice in succession, and also needs to rotate a large angle to unlock, which greatly reduces the possibility of accidental unlocking; even in crowded scenarios where strong accidental touches are likely to occur, it can effectively prevent objects from falling due to accidental unlocking.

[0099] In a preferred embodiment, referring to Figures 2 and 3, a positioning protrusion 212b is provided in the cavity 212a of the bottom shell 212, located beside the ratchet ring 221. The limiting part 230 also includes a curved arm 232 that is elastic due to bending. The curved arm 232 is integrally connected to the pawl 231, and the curved arm 232 passes around the positioning protrusion 212b and surrounds it, so that the pawl 231 is positioned beside the ratchet ring 221 and elastically abuts against the teeth of the ratchet ring 221.

[0100] Additionally, referring to Figures 2 and 3, a positioning protrusion 232a is provided at the end of the curved arm 232 away from the pawl 231. This positioning protrusion 232a engages with a pre-set positioning countersunk hole (not shown in the figure) on the inner wall of the bottom shell 212, achieving precise positioning of the end of the curved arm 232. This design effectively prevents the limiting part 230 from malfunctioning due to misalignment by constraining the displacement degree of freedom at the end of the curved arm 232, ensuring the reliability of the ratchet mechanism.

[0101] It should be noted that the structure for achieving elastic contact between the pawl 231 and the ratchet ring 221 is not limited to the aforementioned curved arm 232. In some other embodiments, a spring and a corresponding structure may also be provided to allow the pawl 231 and the teeth of the ratchet ring 221 to achieve elastic contact.

[0102] In the example shown in the accompanying drawings of this embodiment, the ratchet ring 221 contains 36 ratchet teeth and has 36 indexing positions, forming a modular angle adjustment mechanism with a single-step adjustment angle of 10°.

[0103] The number of ratchet teeth can be adaptively adjusted according to the required indexing accuracy and load-bearing strength to meet the positioning stability and structural compactness requirements under different working conditions. Increasing the number of ratchet teeth can achieve finer adjustments to the finer division, while reducing the number of ratchet teeth can create a positioning structure with greater torque.

[0104] In this embodiment, the second connecting assembly 200 further includes a clamping plate 250 disposed at the bottom of the bottom shell 212, and a pad 250a is disposed on the upper surface of the clamping plate 250. A connecting rod 212d is disposed at one end of the bottom shell 212, a locking block 212e is disposed at the other end, and a plurality of protrusions 212f are disposed at the bottom. One end of the clamping plate 250 is provided with a curled portion 250b adapted to the connecting rod 212d, and the other end is bent and raised upward to form a raised portion 250c. The raised portion 250c is provided with a limiting block 250d adapted to the locking block 212e. The curled portion 250b wraps around the connecting rod 212d, so that the bottom shell 212 and the clamping plate 250 can rotate relative to each other based on the positioning of the connecting rod 212d. During the rotation, the bottom shell 212 can be pushed away from the end of the connecting rod 212d to make the locking block 212e lock under the limiting block 250d of the clamping plate 250 (see Figures 1 and 8). Alternatively, the raised portion 250c can be pried outward to make the locking block 212e disengage from under the limiting block 250d of the clamping plate 250.

[0105] The first connecting component 100 is typically designed onto personalized decorative items (such as plush toys, metal badges, or other IP derivatives, toys, figurines, etc.). The second connecting component 200, on the other hand, is a separate item that can be attached to everyday equipment (usually a shoulder strap).

[0106] The usage process and working principle of this utility model are as follows:

[0107] In use, position the clamp plate 250 and the housing 210 on the upper and lower sides of the shoulder strap respectively. Then, press down hard on the end of the housing 210 away from the connecting rod 212d, so that the locking block 212e pushes the limiting block 250d of the clamp plate 250 outward and moves below the limiting block 250d, thus completing the locking of the housing 210 and the clamp plate 250. This clamps the shoulder strap between the pad 250a of the clamp plate 250 and the protrusion 212f of the bottom shell 212, thereby fixing the second connecting component 200 on the shoulder strap.

[0108] Then, the first connecting component 100 of the personalized decorative item can be connected to the second connecting component 200 on the shoulder strap. When connecting, the snap-fit ​​part 110 is inserted into the snap hole 2a, the first magnetic component 120 and the second magnetic component 240 attract each other, and the locking mouth 111 and the locking tongue 222a engage with each other to form an axial limit. This axial limit can prevent the snap-fit ​​part 110 from coming off the snap hole 2a, thereby making the personalized decorative item firmly attached to the shoulder strap.

[0109] After connection, when it is necessary to display personalized decorative objects at different angles, the locking part 110 can be rotated in the first clockwise direction. At this time, under the action of the lock 111 and the lock tongue 222a engaging with each other, the ratchet ring 221 will rotate synchronously with the locking part 110. After rotating to the desired angle, under the restraint of the pawl 231, the ratchet ring 221 will be positioned and locked at that angle, thus realizing the function of allowing personalized decorative objects to change angles and lock at the desired angle. When it is necessary to change the angle again, the locking part 110 can be turned forcefully again in the first clockwise direction, so that the ratchet ring 221 overcomes the positioning effect of the pawl 231, and the locking part 110 can be rotated. When rotated to the predetermined angle, under the restraint of the pawl 231, the ratchet ring 221 will be locked again, thus keeping the personalized decorative object at the changed angle.

[0110] When it is necessary to remove the personalized decorative item, forcefully rotate the locking part 110 in the second clockwise direction to allow the locking part 110 to break through the limit twice. The first time, the second protrusion 110b breaks through the fourth wall surface 222a2, and the second time, the first protrusion 110a breaks through the fourth wall surface 222a2. Then, when the outer edges 110a1 of the two first protrusions press against the radial inner walls of the two locking tongues 222a respectively, the axial limit is released. Then the locking part 110 can be pulled out from the locking hole 2a, and the personalized decorative item can be removed from the strap.

[0111] As can be seen, the latch of this utility model can achieve a quick and stable connection between two objects. Furthermore, based on its unique angle adjustment function, it allows personalized decorative objects to be displayed from multiple angles, meeting users' requirements for diverse and personalized presentation. Moreover, since unlocking requires breaking through two limits consecutively and rotating at a significant angle, the possibility of accidental unlocking is greatly reduced.

[0112] It should also be noted that the application scenarios of the first connecting component 100 and the second connecting component 200 are not limited to the connection between personalized decorative objects and everyday equipment mentioned above. The latches of this utility model can be used on some other applicable objects that can be connected by latches, especially those that need to have angle adjustment function after connection.

[0113] In addition, in this invention, the ratchet mechanism composed of the ratchet tooth ring 221 and the pawl 231 has a strong sense of segmentation during rotation, and users can also obtain a comfortable sense of stress relief by rotating the ratchet mechanism.

[0114] Alternatively, the latch of this invention can omit the first magnetic component 120 and the second magnetic component 240. Without these, the latch loses its magnetic attraction function, but the first connecting component 100 and the second connecting component 200 can still be connected through the cooperation of the locking jaw 111 and the locking tongue 222a. Furthermore, the cooperation of the ratchet ring 221 and the pawl 231 allows for angle adjustment after connection and angle positioning during the adjustment process. However, because the first magnetic component 120 and the second magnetic component 240 are omitted, the interconnected first connecting component 100 and the second connecting component 200 may become slightly loose due to gaps during use, resulting in a less than ideal user experience.

[0115] Example 2:

[0116] The main difference between this embodiment and Embodiment 1 lies in the different application scenarios, specifically:

[0117] In this embodiment, referring to Figures 10 and 11, the bottom shell 212 is a flat disc-shaped structure with a magnetic ring 212g embedded at its bottom; the middle part of the bottom shell 212 in this embodiment is provided with an opening 212c that has the same function as in embodiment 1, and the upper part of the bottom shell 212 has a shell cavity 212a and a positioning protrusion 212b that have the same function as in embodiment 1.

[0118] In application, the bottom shell 212 is fixed to the mobile phone or a mobile phone case with a magnetic ring via the magnetic ring 212g, thereby fixing the entire second connecting component 200 to the back of the mobile phone. The second connecting component 200 is used as a female buckle, and the first connecting component 100 is used as a male buckle. The first connecting component 100 is also designed for personalized decorative items (such as metal parts, plush toys, etc.). During connection, the personalized decorative item is inserted into the snap hole 2a of the second connecting component 200 through the snap-fit ​​part 110 of the first connecting component 100, thus installing the personalized decorative item on the back of the mobile phone. The personalized decorative item can also be designed to function as a mobile phone stand, so that it can be used as a decorative toy when the mobile phone is held in hand, and as a mobile phone stand when the mobile phone is placed on a table.

[0119] When it is necessary to adjust the angle of personalized decorative items or remove them, the specific operation method and working principle are the same as in Example 1, and will not be repeated here.

[0120] Example 3:

[0121] The main difference between this embodiment and embodiment 1 lies in the structure of the lock opening 111 and the lock tongue 222a, as detailed below:

[0122] In this embodiment, the structure of the latch is shown in Figures 12 to 15. As shown in Figure 15, similar to Embodiment 1, the wall surfaces at both ends of the lock opening 111 along the annular direction are the first wall surface 111a and the second wall surface 111b, respectively, and the wall surfaces at both ends of the lock tongue 222a along the annular direction are the third wall surface 222a1 and the fourth wall surface 222a2, respectively.

[0123] Referring to Figure 15, the first wall surface 111a and the third wall surface 222a1 are both inclined walls. The second wall surface 111b and the fourth wall surface 222a2 are both arc-shaped transition structures, and the radius of the end of the second wall surface 111b away from the lock 111 gradually increases until it matches the radius of the limiting blocking surface 112b at the top of the protrusion 112.

[0124] When the lock jaw 111 and the lock tongue 222a are engaged, the first wall surface 111a fits against the third wall surface 222a1, forming an engagement structure similar to that in Embodiment 1 (see Figure 16). The arc-shaped transition structure of the second wall surface 111b and the fourth wall surface 222a2 is slightly fitted (see Figure 16). When the engaging part 110 rotates in the first clockwise direction (clockwise in Figure 16), as in Embodiment 1, the first wall surface 111a pushes the third wall surface 222a1 to rotate, thereby driving the locking spring 222 to rotate, and then driving the ratchet ring 221 to rotate, thereby achieving angle adjustment (consistent with the principle in Embodiment 1). When the engaging part 110 rotates in the second clockwise direction ( Rotating counterclockwise (as shown in Figure 16) is significantly different from Embodiment 1. The two slightly fitted arc-shaped transition structures of the second wall surface 111b and the fourth wall surface 222a2 will slide relative to each other. During the sliding process, the second wall surface 111b will squeeze the latch 222a. Since the radius of the end of the second wall surface 111b away from the lock opening 111 will gradually increase to be consistent with the radius of the limiting blocking surface 112b, the radius of the inner wall of the latch 222a will eventually gradually expand to be consistent with the radius of the blocking surface 112b (see Figure 17), thereby releasing the axial limit. Then the latching part 110 can be pulled out from the latching hole 2a, thereby removing the personalized decorative items from the strap.

[0125] In addition, in this embodiment, referring to Figures 12 to 14, a shoulder strap connector 250 is connected to the bottom of the bottom shell 212. The shoulder strap connector 250 is provided with a shoulder strap hole 251 for the shoulder strap to pass through. Based on the shoulder strap hole 251, the entire second connecting assembly 200 can be fixed at a predetermined position on the shoulder strap.

[0126] It should be noted that, compared to Embodiment 1, the structure of the lock 111 and the bolt 222a in this embodiment is simpler. Unlocking does not require breaking through the limit twice consecutively, nor does it require rotating at a large angle; only a certain force needs to be applied along the second clockwise direction and a relatively small angle needs to be rotated to unlock. However, because the unlocking process is relatively simple, there is a risk of accidental unlocking, especially in crowded scenarios where accidental strong contact is likely. Accidental contact with decorative objects may cause the locking part 110 to rotate a certain angle along the second clockwise direction, thereby releasing the axial limit and causing the decorative object to fall.

[0127] Therefore, the lock mouth 111 and lock tongue 222a structures in Embodiments 1 and 2 are the optimal embodiments, and have a significant advantage over Embodiment 3 in preventing accidental unlocking.

[0128] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lock with an adjustable angle, characterized in that, include: The first connecting component (100) is provided with a snap-fit ​​part (110); the second connecting component (200) includes a rotating part (220) and a limiting part (230); the limiting part (230) cooperates with the rotating part (220) to form a unidirectional rotation limit that can be positioned for the rotating part (220); when the first connecting component (100) and the second connecting component (200) are connected to each other, the snap-fit ​​part (110) and the rotating part (220) fit together; if the snap-fit ​​part (110) rotates in the first clockwise direction, the rotating part (220) rotates synchronously in the first clockwise direction with the snap-fit ​​part (110), and the rotation angle can be locked by the limiting part (230) during the rotation.

2. The switchable angle latch according to claim 1, characterized in that, The second connecting assembly (200) further includes a housing (210); the rotating part (220) and the limiting part (230) are disposed within the housing (210); wherein the rotating part (220) is provided with a locking hole (2a); when the first connecting assembly (100) and the second connecting assembly (200) are connected to each other, the locking part (110) is inserted into the locking hole (2a) and forms an axial limit through the mutual engagement of the locking port (111) and the locking tongue (222a) to restrict the locking part (110) from disengaging from the locking hole (2a); wherein, the locking port (111) and the locking tongue (222a) are respectively disposed in the locking part (110) and the locking tongue (222a). When the rotating part (220) is in the connected state, if the locking part (110) rotates in the first clockwise direction, the rotating part (220) rotates synchronously with the locking part (110) in the first clockwise direction under the mutual engagement of the locking mouth (111) and the locking tongue (222a); if the locking part (110) rotates in the second clockwise direction opposite to the first clockwise direction, the rotating part (220) is restricted by the limiting part (230) and remains stationary, the locking mouth (111) and the locking tongue (222a) move relative to each other, and when the angle of relative movement reaches a predetermined value, the axial limit is released, and the locking part (110) is allowed to disengage from the locking hole (2a).

3. The switchable angle latch according to claim 2, characterized in that, The rotating part (220) includes a ratchet ring (221); the limiting part (230) includes a pawl (231), the pawl (231) and the teeth of the ratchet ring (221) elastically abut against each other to form a multi-angle positioning structure that rotates in one direction and meshes step by step.

4. The switchable angle latch according to claim 3, characterized in that, The locking port (111) is located on the outer side wall of the latching part (110), and the locking tongue (222a) is located in the rotating part (220).

5. The switchable angle latch according to claim 4, characterized in that, The rotating part (220) also includes a locking spring (222) that is fixed relative to and located inside the ratchet ring (221), the locking spring (222) being a non-closed ring structure; wherein the locking tongue (222a) is disposed on the inner wall of the locking spring (222).

6. The switchable angle latch according to claim 5, characterized in that, The rotating part (220) also includes a toothed ring top cover (223) and a ratchet base (224); the toothed ring top cover (223) is fixed above the ratchet toothed ring (221), and the locking hole (2a) is located in the middle of the toothed ring top cover (223); the locking spring piece (222) is located in the toothed ring inner cavity (221a) inside the ratchet toothed ring (221); the ratchet base (224) is fixed below the ratchet toothed ring (221) and covers the toothed ring inner cavity (221a).

7. The switchable angle latch according to claim 6, characterized in that, The toothed ring top cover (223), ratchet toothed ring (221), locking spring (222), and ratchet base (224) form a synchronously rotating unit through a positioning structure.

8. The switchable angle latch according to claim 5, characterized in that, The wall surfaces at both ends of the lock (111) along the annular direction are the first wall surface (111a) and the second wall surface (111b), respectively; the wall surfaces at both ends of the lock tongue (222a) along the annular direction are the third wall surface (222a1) and the fourth wall surface (222a2), respectively; when the locking part (110) rotates in the first clockwise direction, the first wall surface (111a) and the third wall surface (222a1) engage with each other to drive the locking spring (222) to rotate; when the locking part (110) rotates in the second clockwise direction, the second wall surface (111b) passes over the fourth wall surface (222a2) and moves relative to it, and when the angle of relative movement reaches a predetermined value, the axial limit is released.

9. The switchable angle latch according to claim 8, characterized in that, The latching part (110) has a protrusion (112) below the lock opening (111). The circumferential surface of the protrusion (112) is inclined, forming a first inclined surface (112a). A limiting blocking surface (112b) is formed at the junction of the protrusion (112) and the lock opening (111). The top of the latch (222a) has a second inclined surface (222a3) that matches the first inclined surface (112a), and the bottom has a... There is a flat bottom surface (222a4) of the locking tongue; during the process of the locking part (110) being inserted into the locking hole (2a), the first inclined surface (112a) presses against the second inclined surface (222a3), causing the radius of the locking spring (222) to expand; after the locking part (110) is fully inserted into the locking hole (2a), the limiting blocking surface (112b) and the flat bottom surface (222a4) of the locking tongue are pressed together to form the axial limit.

10. The switchable angle latch according to claim 9, characterized in that, The outer wall of the latching part (110) is provided with two opposite locking slots (111); the inner wall of the locking spring (222) is provided with two opposite locking tongues (222a).

11. The switchable angle latch according to claim 10, characterized in that, The latching portion (110) has two first protrusions (110a) and two second protrusions (110b) formed on its circumferential surface; the two first protrusions (110a) are symmetrically arranged on the circumferential surface of the latching portion (110), and one side wall of the first protrusion (110a) in the circumferential direction is the first wall surface (111a), and the other side wall is an inclined transition surface (110c); furthermore, the first protrusions (110a) are away from the axis of the latching portion (110). One side of the center line is the outer edge (110a1) of the first protrusion, and the radius of the outer edge (110a1) of the first protrusion is equal to the radius of the limiting blocking surface (112b); the two second protrusions (110b) are also symmetrically arranged on the circumferential surface of the snap-fit ​​part (110), and one side wall of the second protrusion (110b) in the annular direction is the second wall surface (111b), and the other side wall surface is a smooth transition surface (110d), and the smooth transition surface (110d) is... Extending to connect with the adjacent inclined transition surface (110c); and, the side of the second protrusion (110b) opposite to the axis of the locking part (110) is the outer edge (110b1) of the second protrusion, and the radius of the outer edge (110b1) of the second protrusion is smaller than the radius of the limiting blocking surface (112b); in the state where the lock mouth (111) and the lock tongue (222a) are mutually engaged, when the locking part (110) rotates along the second clockwise direction and the rotation angle reaches During the process of reaching the predetermined value, the second wall surface (111b) first passes over the fourth wall surface (222a2) that is in contact with it, and then the inclined transition surface (110c) passes over the fourth wall surface (222a2) again, until the outer edges (110a1) of the two first protrusions respectively press against the radial inner walls of the two latches (222a), the relative movement angle between the lock mouth (111) and the latches (222a) reaches the predetermined value, and the axial limit is released.

12. The switchable angle latch according to any one of claims 2 to 11, characterized in that, The snap-fit ​​part (110) is provided with a first magnetic element (120) inside, and the housing (210) is provided with a second magnetic element (240); when the first connecting component (100) and the second connecting component (200) are connected to each other, the first magnetic element (120) and the second magnetic element (240) attract each other.

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