A folding joint unlock pause mechanism

Abstract

The application discloses a kind of folding joint unlocking pause mechanisms, including rotationally connected first, second joint and the locking mechanism between the two, locking mechanism includes locking piece, reset piece, unlocking piece and cooperation structure group;Cooperation structure group includes the interlocking structure and the matching structure of cooperation, one of which is set on locking piece or unlocking piece, the other is set on first joint or second joint;When locking piece moves to unlocking position under the operation of unlocking piece, the interlocking structure and the matching structure are mutually interlocked, so that locking piece can be kept in unlocking position by overcoming the driving force of reset piece;When first joint and second joint produce relative rotation, the interlocking structure and the matching structure are uninterlocked, and locking piece is reset under the driving of reset piece;The application can be automatically maintained in pause state after unlocking, without user continuous operation, solve the problem of inconvenient operation of traditional mechanism.

Description

Technical Field

[0001] This application relates to the field of children's products technology, and in particular to a folding joint unlocking and pausing mechanism for products such as children's strollers. Background Technology

[0002] To facilitate storage, strollers and similar products commonly employ various folding joint locking mechanisms. The basic principle is that when the joint is fully extended, a spring-driven locking element automatically engages with a positioning hole or slot on another part of the joint, thus locking it in place. When folding is required, the user typically needs to operate an unlocking mechanism (such as an unlock button) to overcome the spring force and disengage the locking element from the slot, thereby releasing the joint and allowing folding.

[0003] However, such mechanisms have a significant drawback: once the user releases the unlocking mechanism, the locking mechanism immediately returns to its locked state under the action of the spring. This means that the user must continuously press the unlocking mechanism throughout the folding process. This makes operation extremely inconvenient, as users cannot smoothly and effortlessly complete the folding action with both hands, and there is a risk of joint jamming or injury due to accidental release.

[0004] Therefore, there is an urgent need for an improved mechanism that can stably maintain the unlocked state after the joint is unlocked, thereby freeing the user's hands and ensuring the safety and convenience of folding operation. Summary of the Invention

[0005] The purpose of this application is to provide a folding joint unlocking and pausing mechanism that can automatically maintain the paused state after unlocking without requiring continuous operation by the user, thus solving the problem of inconvenience in the operation of traditional mechanisms.

[0006] The technical solution of this application is: a folding joint unlocking and pausing mechanism, comprising a first joint and a second joint rotatably connected, and a locking mechanism disposed between the first joint and the second joint, wherein the locking mechanism comprises:

[0007] A locking element, which is movably disposed on the first joint or the second joint, is used to restrict the relative rotation between the first joint and the second joint when in the locked position;

[0008] The reset element acts on the locking element to provide a driving force toward the locking position;

[0009] The unlocking element, which is connected to or in contact with the locking element, is used to operate the locking element to move from the locked position to the unlocked position against the driving force of the reset element;

[0010] The mating structure assembly includes a snap-fit ​​structure and a mating structure that cooperate with each other, one of which is provided on the locking or unlocking member, and the other is provided on the first joint or the second joint;

[0011] When the locking member moves to the unlocked position under the operation of the unlocking member, the locking structure and the mating structure engage with each other, so that the locking member can overcome the driving force of the reset member and temporarily remain in the unlocked position.

[0012] When the first joint and the second joint rotate relative to each other, the locking structure and the mating structure are released from their locking engagement, and the locking member is reset under the drive of the reset member.

[0013] One of the specific technical solutions of this application is: the snap-fit ​​structure is disposed on the locking member, and the mating structure is disposed on the first joint or the second joint that can generate relative displacement with the locking member when the joint rotates relative to each other.

[0014] As a preferred technical solution, the locking element is a locking gear, which is movably disposed within the first joint along its axial direction;

[0015] The reset element is a first spring, which is disposed between the first joint and the locking gear, and is used to provide an axial driving force to the locking gear toward the second joint;

[0016] The unlocking component is an unlocking button, which contacts the locking gear and is used to operate the locking gear to overcome the driving force of the first spring and move away from the second joint.

[0017] The locking gear has a barb on its inner periphery, forming the above-mentioned snap-fit ​​structure; a pause block is fixedly provided inside the second joint, and an inclined block is provided on the outer periphery of the pause block, forming a mating structure corresponding to the barb.

[0018] When the locking gear moves away from the second joint to the unlock position under the operation of the unlock button, the barb and the wedge engage with each other, so that the locking gear can overcome the driving force of the first spring and temporarily remain in the unlock position;

[0019] When the first joint and the second joint rotate relative to each other, the barb and the wedge block are disengaged due to the change in their relative positions, and the locking gear is reset under the drive of the first spring.

[0020] As a preferred technical solution, the first joint is provided with a first slot corresponding to the locking gear, and the second joint is provided with a second slot corresponding to the locking gear; in the locked state, the locking gear is driven by the first spring and engages in the second slot.

[0021] As a preferred technical solution, the unlock button is movably disposed in the button groove of the second joint; the unlock button protrudes to one side of the locking gear to form a drive post, which forms a transmission contact with the end face of the locking gear to transmit the pressing force to the locking gear.

[0022] The second specific technical solution of this application is: the locking member is installed on the first joint, and the unlocking member is installed on the second joint; the snap-fit ​​structure is disposed on the unlocking member, and the mating structure is disposed on the second joint.

[0023] As a preferred technical solution, the locking element is a locking block, which is rotatably disposed within the first joint;

[0024] The reset element is a second spring, which is disposed between the first joint and the locking block, and is used to provide an axial driving force to the locking block toward the second joint;

[0025] The unlocking component is an unlocking button, which contacts the locking block and is used to operate the locking block to move away from the second joint, overcoming the driving force of the second spring; a third spring is provided between the unlocking button and the second joint;

[0026] The unlock button is provided with an elastic hook to form the above-mentioned latching structure; the second joint has a stepped part at the end of the button groove away from the pressing end of the unlock button to form the above-mentioned mating structure; the movable end of the locking block has a pause groove for accommodating the elastic hook in the unlock position, and the two side walls of the pause groove are guide slopes for guiding and pushing the elastic hook when the joint rotates.

[0027] When the locking block moves to the unlock position under the operation of the unlock button, the elastic hook hooks onto the step portion of the second joint, temporarily holding the unlock button and the locking block in the unlock position; at the same time, the inner end of the elastic hook extends into the pause groove.

[0028] When the first joint and the second joint rotate relative to each other, the elastic hook slides and engages with the guide ramp on one side of the pause groove and is pushed out, causing the elastic hook to disengage from the step portion of the second joint, thereby releasing the locking engagement.

[0029] As a preferred technical solution, the movable end of the locking block has a protruding locking portion, and the end face of the second joint opposite to the first joint is provided with a locking groove corresponding to the locking portion; in the locked state, the locking block, driven by the second spring, has its locking portion engaged in the locking groove.

[0030] Compared with the prior art, this application has the following advantages: This application utilizes a snap-fit ​​structure and a corresponding mating structure to achieve a pause function. The user only needs to briefly operate the unlocking component (such as pressing the unlock button) for the joint to remain stably in the unlocked pause state, allowing the user to completely release their hands and complete subsequent folding actions in a coordinated and effortless manner. After the first and second joints rotate relative to each other, the pause function is automatically released, and the locking component quickly resets under the action of the reset component. The design is ingenious, the structure is compact, and the operation is reliable. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0033] Figure 1 This is a schematic diagram of the assembly structure of Example 1;

[0034] Figure 2 This is a schematic diagram of the assembly structure of the unlocking component, locking component, and pause block in Embodiment 1;

[0035] Figure 3 This is a side cross-sectional view of the structure of Embodiment 1 when it is in the locked state;

[0036] Figure 4 This is a schematic diagram of the structure of Embodiment 1 when it is in a locked state and the first joint is disassembled;

[0037] Figure 5 This is a side cross-sectional view of the structure when Embodiment 1 is in the unlocked and paused state;

[0038] Figure 6 This is a schematic diagram of the structure of Embodiment 1 when it is in the unlocked pause state and the first joint is disassembled;

[0039] Figure 7 This is a side cross-sectional view of the structure of Embodiment 1 when it is in the unlocked, rotated, disengaged, and paused state.

[0040] Figure 8This is a schematic diagram of the structure of Embodiment 1 when it is in the unlocked rotation disengagement paused state and the first joint is disassembled;

[0041] Figure 9 This is a three-dimensional structural diagram of Example 2;

[0042] Figure 10 This is a schematic diagram of the assembly structure of Example 2;

[0043] Figure 11 This is a schematic diagram of the assembly structure from another angle in Embodiment 2;

[0044] Figure 12 This is a three-dimensional assembly structure diagram of the first joint, locking block, and unlock button when the second embodiment is in the locked state;

[0045] Figure 13 This is a side cross-sectional view of the structure of Embodiment 2 when it is in the locked state;

[0046] Figure 14 This is a schematic diagram of the structure of Embodiment 2 when it is in a locked state and the first joint is disassembled;

[0047] Figure 15 for Figure 14 A magnified cross-sectional view of the central section;

[0048] Figure 16 This is a three-dimensional assembly structure diagram of the first joint, locking block, and unlock button when the second embodiment is in the unlocking pause state;

[0049] Figure 17 This is a side cross-sectional view of the structure when Embodiment 2 is in the unlocked and paused state;

[0050] Figure 18 This is a schematic diagram of the structure of Embodiment 2 when it is in the unlocked pause state and the first joint is disassembled;

[0051] Figure 19 for Figure 18 A magnified cross-sectional view of the structure.

[0052] in:

[0053] 1. First joint; 11. First slot;

[0054] 2 Second joint; 21 Second slot; 22 Button slot; 23 Through hole; 24 Pause block; 241 Inclined block; 25 Locking slot; 26 Step section;

[0055] 3 locking gears; 31 barbs;

[0056] 4. First spring;

[0057] 5. Unlock button; 51. Drive column; 52. Flexible latch;

[0058] 6. Locking block; 61. Pause slot; 611. Guide slope; 62. Locking part;

[0059] 7. The second spring;

[0060] 8. The third spring. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0062] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0063] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0064] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0065] In the description of this application specification and claims, the term "if" is generally interchangeable with "when," "at," "in response to determination," or "in response to detection," depending on the context.

[0066] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0067] Example 1: As Figures 1 to 8 As shown, a folding joint unlocking and pausing mechanism includes a first joint 1 and a second joint 2 rotatably connected, and a locking mechanism disposed between the first joint 1 and the second joint 2. The locking mechanism includes:

[0068] The locking gear 3 is slidably disposed in the internal cavity of the first joint 1 along the axial direction, and is used to restrict the relative rotation between the first joint 1 and the second joint 2 when in the locked position;

[0069] The first spring 4 abuts against the inner wall of the first joint 1 and the locking gear, and always provides the locking gear with an axial driving force toward the second joint 2;

[0070] Unlock button 5, which contacts the locking gear, is used to operate the locking gear to overcome the driving force of the first spring and move it away from the second joint.

[0071] In this embodiment, a first slot 11 corresponding to the locking gear 3 is provided in the first joint 1. A second slot 21 corresponding to the locking gear 3 is provided in the second joint 2. In the locked state, the locking gear is engaged in the second slot 21 under the drive of the first spring. Since this locking method is a conventional structure in this technical field, it will not be described in detail or limited here.

[0072] In this embodiment, the unlock button 5 is slidably disposed in the button groove 22 on the outer side of the second joint 2; the unlock button 5 protrudes to the side facing the locking gear and forms a drive post 51, which passes through the corresponding through hole 23 on the second joint 2 and forms a transmission contact with the end face of the locking gear 3 to transmit the pressing force to the locking gear 3.

[0073] The key improvement of this application lies in the unlocking and pausing function. The locking mechanism also includes a mating structure group, which comprises a snap-fit ​​structure and a mating structure that cooperate with each other. In this preferred embodiment, the snap-fit ​​structure is disposed on the locking gear 3, and the mating structure is disposed on the second joint 2.

[0074] In this embodiment, the inner periphery of the locking gear 3 is provided with a barb 31, forming the aforementioned snap-fit ​​structure. A central cylindrical stop block 24 is fixedly disposed inside the second joint 2, which passes through the central hole of the locking gear 3 and extends into the first joint 1. An inclined block 241 is provided on the outer periphery of the stop block 24 near the first joint 1, forming a mating structure corresponding to the barb 31.

[0075] The inclined block 241 has a flat locking surface and an inclined guide surface. The guide surface is used to guide the barb 31 to slide in and achieve a locking engagement during the locking process.

[0076] The pause block 24 can be fixedly installed in the second joint 2 by means of snap-fit ​​or interference fit, which facilitates assembly.

[0077] In this embodiment, the inclined blocks 241 arranged on the outer periphery of the pause block 24 are in groups of two, symmetrically arranged circumferentially. Correspondingly, the barbs 31 arranged on the inner periphery of the locking gear 3 are in two groups of four, which are paired with the inclined blocks 241.

[0078] The working principle of this embodiment is as follows:

[0079] Locked state: The first spring 4 pushes the locking gear 3 towards the second joint 2, causing it to engage with the second slot 21. At this time, the second joint 2 is locked in the circumferential direction by the gear engagement and cannot rotate relative to it.

[0080] Unlocking and Pausing: When the user presses the unlock button 5, the drive column 51 pushes the locking gear 3 to slide away from the axial force of the first spring 4 (away from the second joint 2). After the locking gear 3 is completely disengaged from the second slot 21, the joint is unlocked. At this time, the barb 31 on the inner periphery of the locking gear 3 just passes over the guide slope of the inclined block 241 of the pause block 24 and hooks onto the flat stop surface of the inclined block 241. Even if the unlock button 5 is released, the engagement formed by the barb 31 and the stop surface can prevent the locking gear 3 from being pushed back to the locked position by the first spring 4, thus achieving "unlocking and pausing".

[0081] Release from pause and automatic reset: When the first joint 1 and the second joint 2 rotate relative to each other, the barb 31 and the wedge block 241 disengage due to circumferential misalignment; the locking fails, and the locking gear 3 quickly resets under the immediate push of the first spring 4 (although the locking gear 3 cannot engage with the second slot 21 at this time because the joint has rotated, it is in a standby state). When the joint is extended to its position again, the locking gear 3 will automatically engage with the second slot 21, completing the locking.

[0082] Example 2: Figures 9 to 19 As shown, a folding joint unlocking and pausing mechanism includes a first joint 1 and a second joint 2 rotatably connected, and a locking mechanism disposed between the first joint 1 and the second joint 2. The locking mechanism includes:

[0083] Locking block 6, which is rotatably disposed within the first joint 1, is used to restrict the relative rotation between the first joint 1 and the second joint 2 when in the locked position;

[0084] The second spring 7 is disposed between the first joint 1 and the locking block 6, and is used to provide an axial driving force toward the second joint 2 to the locking block 6;

[0085] The unlock button 5 is in contact with the locking block 6 and is used to operate the locking block 6 to move away from the second joint 2 against the driving force of the second spring 4; a third spring 8 is provided between the unlock button 5 and the second joint 2.

[0086] The unlock button 5 is slidably inserted into the button slot 22 of the second joint 2.

[0087] In this embodiment, the movable end of the locking block 6 has a protruding locking part 62, and the end face of the second joint 2 opposite to the first joint 1 is provided with a locking groove 25 corresponding to the locking part 62; in the locked state, the locking part 62 of the locking block 6 is engaged in the locking groove 25 under the drive of the second spring 7.

[0088] The key improvement of this application lies in the unlocking and pausing function. The locking mechanism also includes a mating structure assembly, which comprises a snap-fit ​​structure and a mating structure that cooperate with each other. Preferably, in this embodiment, the snap-fit ​​structure is disposed on the unlocking button 5, and the mating structure is disposed on the second joint 2.

[0089] In this embodiment, the unlock button 5 is integrally formed with an elastic hook 52, constituting the above-mentioned latching structure. The second joint 2 has a stepped portion 26 at the end of the button groove 22 away from the pressing end of the unlock button 5, constituting the above-mentioned mating structure; the movable end of the locking block 6 has a pause groove 61 for accommodating the elastic hook 52 when it is in the unlocked position, and the two side walls of the pause groove 61 are guide slopes 611 for guiding and pushing the elastic hook 52 when the joint rotates.

[0090] The working principle of this embodiment is as follows:

[0091] Locked state: Under the action of the second spring 7, the locking part 62 of the locking block 6 is engaged in the locking groove 25 of the second joint 2, and the joint cannot rotate. At this time, the unlocking button 5 is in the extended position under the action of the third spring 8, and the hook-shaped part of its elastic hook 52 is compressed and engaged in the button groove 22.

[0092] Unlocking and Pausing: The user presses the unlock button 5 inward. The unlock button 5 moves inward against the elastic force of the third spring 8, and its end pushes the locking block 6, causing the locking block 6 to rotate around its pin against the elastic force of the second spring 7. The locking part 62 disengages from the locking groove 25, and the joint is unlocked. At this time, the elastic hook 52 on the unlock button 5 uses its elasticity to hook the step part 26 of the second joint 2, so that the unlock button 5 and the locking block 6 are temporarily held in the unlocked position; at the same time, the inner end of the elastic hook 52 extends into the pause groove 61 of the locking block 6.

[0093] Release of Pause and Automatic Reset: When the first joint 1 and the second joint 2 rotate relative to each other, the locking block 6 is located on the first joint 1, while the unlocking button 5 is located on the second joint 2, resulting in relative displacement between them. This relative rotation causes the elastic hook 52 to contact and slide relative to the guide slope 611 on one side of the pause groove 61. Under the action of the guide slope 611, the elastic hook 52 is pushed out and disengages from the step portion 26 of the second joint 2, thereby releasing the locking engagement. Once the engagement is released, the locking block 6 quickly resets under the driving force of the second spring 7 (although the locking part 62 cannot engage with the locking groove 25 at this time because the joint has rotated, it is in a standby state). When the joint is fully extended again, the locking part 62 automatically engages with the locking groove 25, completing the locking.

[0094] The application utilizes a snap-fit ​​structure and a corresponding mating structure to achieve a pause function. The user only needs to briefly operate the unlocking mechanism (such as pressing the unlock button) to stably maintain the joint in the unlocked pause state, allowing the user to completely release their hands and complete subsequent folding actions with coordinated and effortless movements. After the first and second joints rotate relative to each other, the pause function is automatically released, and the locking mechanism quickly resets under the action of the reset mechanism. The design is ingenious, the structure is compact, and the operation is reliable.

[0095] As a preferred embodiment of this application, in the description of this specification, the reference to terms such as "preferred," "optional," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] The above embodiments are only used to illustrate the detailed solutions of this application. This application is not limited to the above detailed solutions, that is, it does not mean that this application must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvements to this application, equivalent substitutions of the raw materials of the product of this application, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of this application.

Claims

1. A folding joint unlocking and pausing mechanism, comprising a first joint and a second joint rotatably connected, and a locking mechanism disposed between the first joint and the second joint, characterized in that, The locking mechanism includes: A locking element, which is movably disposed on the first joint or the second joint, is used to restrict the relative rotation between the first joint and the second joint when in the locked position; The reset element acts on the locking element to provide a driving force toward the locking position; The unlocking element, which is connected to or in contact with the locking element, is used to operate the locking element to move from the locked position to the unlocked position against the driving force of the reset element; The mating structure assembly includes a snap-fit ​​structure and a mating structure that cooperate with each other, one of which is provided on the locking or unlocking member, and the other is provided on the first joint or the second joint; When the locking member moves to the unlocked position under the operation of the unlocking member, the locking structure and the mating structure engage with each other, so that the locking member can overcome the driving force of the reset member and temporarily remain in the unlocked position. When the first joint and the second joint rotate relative to each other, the locking structure and the mating structure are released from their locking engagement, and the locking member is reset under the drive of the reset member.

2. The folding joint unlocking and pausing mechanism according to claim 1, characterized in that, The snap-fit ​​structure is disposed on the locking member, and the mating structure is disposed on the first joint or the second joint that can generate relative displacement with the locking member when the joint rotates relative to each other.

3. The folding joint unlocking and pausing mechanism according to claim 2, characterized in that, The locking element is a locking gear, which is movably disposed within the first joint along its axial direction; The reset element is a first spring, which is disposed between the first joint and the locking gear, and is used to provide an axial driving force to the locking gear toward the second joint; The unlocking component is an unlocking button, which contacts the locking gear and is used to operate the locking gear to overcome the driving force of the first spring and move away from the second joint. The locking gear has a barb on its inner periphery, forming the above-mentioned snap-fit ​​structure; a pause block is fixedly provided inside the second joint, and an inclined block is provided on the outer periphery of the pause block, forming a mating structure corresponding to the barb. When the locking gear moves away from the second joint to the unlock position under the operation of the unlock button, the barb and the wedge engage with each other, so that the locking gear can overcome the driving force of the first spring and temporarily remain in the unlock position; When the first joint and the second joint rotate relative to each other, the barb and the wedge block are disengaged due to the change in their relative positions, and the locking gear is reset under the drive of the first spring.

4. The folding joint unlocking and pausing mechanism according to claim 3, characterized in that, The first joint is provided with a first slot corresponding to the locking gear, and the second joint is provided with a second slot corresponding to the locking gear; in the locked state, the locking gear is driven by the first spring and engages in the second slot.

5. A folding joint unlocking and pausing mechanism according to claim 3, characterized in that, The unlock button is movably disposed in the button groove of the second joint; the unlock button protrudes to one side of the locking gear to form a drive post, which makes transmission contact with the end face of the locking gear to transmit pressing pressure to the locking gear.

6. The folding joint unlocking and pausing mechanism according to claim 1, characterized in that, The locking element is mounted on the first joint, and the unlocking element is mounted on the second joint; The snap-fit ​​structure is disposed on the unlocking component, and the mating structure is disposed on the second joint.

7. A folding joint unlocking and pausing mechanism according to claim 6, characterized in that, The locking element is a locking block, which is rotatably disposed within the first joint; The reset element is a second spring, which is disposed between the first joint and the locking block, and is used to provide an axial driving force to the locking block toward the second joint; The unlocking component is an unlocking button, which contacts the locking block and is used to operate the locking block to move away from the second joint, overcoming the driving force of the second spring; a third spring is provided between the unlocking button and the second joint; The unlock button is provided with an elastic hook to form the above-mentioned latching structure; the second joint has a stepped part at the end of the button groove away from the pressing end of the unlock button to form the above-mentioned mating structure; the movable end of the locking block has a pause groove for accommodating the elastic hook in the unlock position, and the two side walls of the pause groove are guide slopes for guiding and pushing the elastic hook when the joint rotates. When the locking block moves to the unlock position under the operation of the unlock button, the elastic hook hooks onto the step portion of the second joint, temporarily holding the unlock button and the locking block in the unlock position; at the same time, the inner end of the elastic hook extends into the pause groove. When the first joint and the second joint rotate relative to each other, the elastic hook slides and engages with the guide ramp on one side of the pause groove and is pushed out, causing the elastic hook to disengage from the step portion of the second joint, thereby releasing the locking engagement.

8. A folding joint unlocking and pausing mechanism according to claim 7, characterized in that, The movable end of the locking block has a protruding locking portion, and the end face of the second joint opposite to the first joint is provided with a locking groove corresponding to the locking portion; in the locked state, the locking block, driven by the second spring, has its locking portion engaged in the locking groove.

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