Rotary locking mechanism and turnover support
By introducing locking components with through holes and positioning holes into the rotating mechanism of devices such as night vision devices, the problems of unstable locking and complicated operation in the prior art are solved, achieving a stable and efficient locking mechanism, simplifying the operation process and reducing weight.
Patent Information
- Application Number
- CN202520166018.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The existing rotating mechanisms of night vision devices and other equipment have large gaps, unstable locking, difficulty in one-handed operation, and are too heavy to meet the requirements for lightweight design.
A rotary locking mechanism is adopted. By setting through holes and positioning holes between the rotating component and the fixed component, and by using the cooperation of locking parts and buttons, the rotating component can be stably locked and unlocked, simplifying the operation process.
It achieves a locking mechanism with excellent locking effect, high stability, and convenient operation, avoids equipment vibration, and has a simple and reasonable structure, reducing weight.
Smart Images
Figure CN223649000U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of bracket technology, and particularly relates to a rotary locking mechanism for, for example, a head-mounted device and a flip bracket having the rotary locking mechanism. Background Technology
[0002] Currently, in fields such as military, security, hunting, and exploration, night vision devices, lighting equipment, night vision binoculars, and infrared cameras are commonly used. These devices enhance vision in low-light environments or provide visible light, enabling users to clearly see their surroundings at night or in low-light conditions, thus improving their field of vision. These devices are typically worn on the user's head via a headband or various supports to free their hands. When attached to a helmet via a support, to ensure a comfortable user position, a moving and rotating mechanism is needed on the support to move and / or rotate the device, thereby adjusting the angle of the device and the distance from the user's eyes to achieve satisfactory performance.
[0003] The existing rotating mechanism has a large gap, making it difficult to form a stable and reliable lock. This can easily cause vibration in devices such as night vision devices. Furthermore, the adjustment operation is cumbersome and cannot be operated with one hand. In addition, the existing flip bracket is heavy and does not take into account the need for lightweight design. Utility Model Content
[0004] In view of at least one of the above-mentioned problems in the prior art, the purpose of this application is to provide a rotary locking mechanism with stable and reliable locking method and convenient and quick operation, as well as a flip bracket having the rotary locking mechanism.
[0005] The technical solution adopted in this application embodiment is a rotary locking mechanism, comprising:
[0006] A rotating member having at least one through hole disposed around its outer periphery;
[0007] A fixing member having a through hole, the fixing member being sleeved on the outside of the rotating member through the through hole, and the wall of the through hole having at least one set of positioning holes corresponding to at least one through hole;
[0008] A locking assembly is disposed on the rotating member and includes a locking member capable of simultaneously being confined within at least one of the through holes and at least one of a corresponding set of positioning holes to lock the rotating member onto the fixed member, or capable of disengaging from the positioning holes to release the locking of the rotating member onto the fixed member, thereby allowing the rotating member to rotate relative to the fixed member.
[0009] In an optional embodiment, the locking element is a locking ball, the number of which is the same as the number of the through holes, and they are movably disposed in the through holes in a one-to-one correspondence;
[0010] The locking component also includes:
[0011] A button, disposed on the rotating member and having a pushing slope, is movable relative to the rotating member to have a pressed state and a released state. When the button is in the released state, the pushing slope presses against the locking ball, causing the locking ball to partially enter the positioning hole, thereby locking the rotating member onto the fixed member. When the button is in the pressed state, the pushing slope releases its pressing action on the locking ball, the locking ball disengages from the positioning hole, and the locking of the rotating member is released, allowing the rotating member to rotate relative to the fixed member.
[0012] A reset element acts on the button to apply a force to the button, resetting it from the pressed state to the released state.
[0013] In an optional embodiment, the fixing component includes a bushing, and the positioning hole is provided on the inner wall of the bushing;
[0014] The rotating component includes a shaft with a through hole extending to one end in its axial direction. The through hole is located on the outer peripheral wall of the shaft and communicates with the shaft hole.
[0015] The button is located inside the shaft hole and can move along the axial direction of the shaft hole to switch between the pressed state and the released state.
[0016] In an optional embodiment, the positioning hole is arranged along the radial direction of the bushing, and the through hole is arranged along the radial direction of the shaft; the diameter of the positioning hole is smaller than the diameter of the locking ball, and the diameter of the through hole is larger than the diameter of the locking ball.
[0017] In an optional embodiment, the button includes a rod portion passing through the shaft hole and a pressing portion protruding outside the shaft hole. The rod portion includes a narrow diameter section, a wide diameter section, and a frustum section for transitionally connecting the narrow diameter section and the wide diameter section. The narrow diameter section is closer to the pressing portion than the wide diameter section. The small diameter end of the frustum section is connected to the narrow diameter section, and the large diameter end of the frustum section is connected to the wide diameter section. The outer peripheral surface of the frustum section forms the pushing slope.
[0018] In an optional embodiment, the reset element is a spring, and the end of the button rod away from the pressing part is provided with a blind hole therein. The spring is disposed in the blind hole, one end of the spring abuts against the bottom of the blind hole, and the other end abuts against the bottom of the shaft hole of the shaft rod.
[0019] In an optional embodiment, the outer peripheral wall of the shaft is provided with two through holes, and a first locking ball and a second locking ball are respectively provided in the two through holes;
[0020] The inner wall of the bushing has three positioning holes located on the same circumference. The three positioning holes are a first positioning hole, a second positioning hole, and a third positioning hole. The first positioning hole and the second positioning hole are close to each other and far away from the third positioning hole. The third positioning hole is equidistant from the first positioning hole and the second positioning hole. The third positioning hole and the first positioning hole form one group, and the third positioning hole and the second positioning hole form another group. When the shaft of the rotating member rotates to the first position, the first locking ball limit is located in the third positioning hole, and the second locking ball limit is located in the second positioning hole. When the shaft of the rotating member rotates to the second position, the first locking ball limit is located in the first positioning hole, and the second locking ball limit is located in the third positioning hole.
[0021] In an optional embodiment, the central angle subtended by the arc between the third positioning hole and the first positioning hole is α, and the central angle subtended by the arc between the third positioning hole and the second positioning hole is β. α and β are equal and greater than 90°.
[0022] In an optional embodiment, the fixing member further includes a fixing plate having a fixing hole, and the bushing is fitted into the fixing hole;
[0023] The rotating component also includes a first clamping plate and a second clamping plate, which are clamped on opposite sides of the fixed plate. The other end of the shaft passes through the first clamping plate, the bushing, and the second clamping plate in sequence, and is threaded with an adjusting nut to lock it with the two clamping plates.
[0024] A flip-up bracket includes two sliding adjustment mechanisms. The flip-up bracket also includes a rotation locking mechanism as described in any of the above embodiments. The rotation locking mechanism is used to rotatably connect the two sliding adjustment mechanisms so that the two sliding adjustment mechanisms can close or unfold relative to each other.
[0025] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: the rotary locking mechanism of this application has a simple and reasonable structure, is easy to operate, and has a better locking effect and high stability, and will not shake during rotation.
[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.
[0027] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description
[0028] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.
[0029] Figure 1 This is a three-dimensional structural schematic diagram of the rotary locking mechanism according to an embodiment of this application.
[0030] Figure 2 This is an exploded view of the rotary locking mechanism according to an embodiment of this application.
[0031] Figure 3 This is a cross-sectional view of the rotary locking mechanism according to an embodiment of this application.
[0032] Figure 4 This is a three-dimensional structural diagram of the bushing according to an embodiment of this application.
[0033] Figure 5 This is a three-dimensional structural diagram of the shaft according to an embodiment of this application.
[0034] Figure 6 This is a three-dimensional structural diagram of the button in an embodiment of this application.
[0035] Figure 7 This is a three-dimensional structural diagram of the flip bracket in the unfolded state according to an embodiment of this application.
[0036] Figure 8 This is a three-dimensional structural diagram of the flip bracket in the tilted state according to an embodiment of this application.
[0037] Figure 9 This is a three-dimensional structural diagram of the flip bracket in a folded state according to an embodiment of this application.
[0038] Figure label:
[0039] 10 - Rotary locking mechanism;
[0040] 1-Rotating component; 11-Shaft; 111-Through hole; 112-Shaft hole; 113-External thread; 12-First clamping plate; 13-Second clamping plate; 131-Oval hole; 14-Adjusting nut;
[0041] 2-Fixing component; 21-Sleeve; 211-Through hole; 212-First positioning hole; 213-Second positioning hole; 214-Third positioning hole; 215-Protrusion; 22-Fixing plate; 221-Fixing hole; 222-Recess;
[0042] 3-Locking component; 31-Locking ball; 32-Reset component; 33-Button; 331-Lever; 332-Frustum section; 333-Pushing slope; 334-Blind hole; 335-Pressing part.
[0043] 20 - First sliding adjustment mechanism; 30 - Second sliding adjustment mechanism. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments 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. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.
[0045] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0046] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.
[0047] First, it should be noted that this application applies to any device that can be worn on a user's head, including but not limited to night vision devices, headlamps, and night vision binoculars. For ease of description, night vision devices will be used as an example below. Night vision devices include, but are not limited to, low-light night vision devices, infrared night vision devices, and fusion glasses.
[0048] This application provides a rotating locking mechanism 10, which can be used on a flip bracket to switch the flip bracket between at least a closed state and an unfolded state. When the night vision device (not shown in the figure) is not needed, the flip bracket can be flipped to a closed state against the helmet to store the night vision device, preventing the flip bracket and the night vision device on it from obstructing the user's vision. When the night vision device is needed, the flip bracket can be unfolded and the night vision device can be flipped to the front of the user's head for easy use.
[0049] like Figures 1 to 3 As shown, the rotary locking mechanism 10 of this application embodiment includes a rotating member 1, a fixing member 2, and a locking assembly 3. The rotating member 1 has at least one through hole 111 around its outer periphery. The fixing member 2 has a through hole 211 and is sleeved on the outside of the rotating member 1 through the through hole 211. The wall of the through hole 211 is provided with at least one set of positioning holes corresponding to the at least one through hole 111. The locking assembly 3 is disposed on the rotating member and includes a locking member. The locking member has a locked state and an unlocked state. In the locked state, the locking member is simultaneously confined within at least one of the at least one through hole 111 and at least one of the corresponding set of positioning holes to lock the rotating member 1 onto the fixing member 2. In the unlocked state, the locking member disengages from the positioning hole, releasing the locking of the rotating member 1 onto the fixing member 2, allowing the rotating member 1 to rotate relative to the fixing member 2.
[0050] The rotary locking mechanism 10 of this application embodiment provides a positioning hole on the fixed member 2 and a through hole 111 on the rotating member 1 that cooperates with the positioning hole. By using a locking member that can be inserted into both the positioning hole and the through hole 111 at the same time, or that can be disengaged from the positioning hole and only located in the through hole 111, the rotating member 1 can be locked and fixed on the fixed member 2. The above structure is simple and reasonable, and the locking member and the positioning hole cooperate tightly, resulting in a better locking effect and high stability.
[0051] The specific structure of the locking element is not limited, as long as it can be adapted to the through hole 111 and the positioning hole, and can smoothly enter and exit the positioning hole. For example, the locking element can be a ball with a diameter smaller than the diameter of the through hole 111 but larger than the diameter of the positioning hole, so that the ball can move freely in the axial direction of the through hole 111, but will not fall off the side away from the through hole 111 when the positioning hole is a through hole. The ball can only partially enter the positioning hole, which also facilitates the ball to smoothly disengage from the positioning hole toward the through hole 111 in the unlocked state. For example, the locking element can be a short cylinder with a spherical end facing the positioning hole. The radial dimension of the short cylinder is smaller than the diameter of the through hole 111, allowing the short cylinder to move freely in the axial direction of the through hole 111. The diameter of the spherical end of the short cylinder is larger than the diameter of the positioning hole, and it can only partially enter the positioning hole. This allows the short cylinder to smoothly exit from the positioning hole toward the through hole 111 in the unlocked state, without falling off the side of the positioning hole (when the positioning hole is a through hole) away from the through hole 111. For ease of description, the following explanation will use the locking ball 31, which is a spherical locking element, as an example. Since the operating principle is the same when the locking element is a short cylinder as when it is a sphere, this application will not provide a specific description of the short cylinder locking element. Furthermore, the material of the locking element is not limited; it can be made of materials such as metal or hard plastic.
[0052] In some embodiments, such as Figure 2 and Figure 3 As shown, the locking element is a locking ball 31. The number of locking balls 31 is the same as the number of through holes 111, and they are movably disposed in the through holes 111 in a corresponding manner. The locking assembly 3 also includes a button 33 and a reset element 32. The button 33 is disposed on the rotating member 1 and has a pushing inclined surface 333. The button 33 can move relative to the rotating member 1 and has a pressed state and a released state. When the button 33 is in the released state, the pushing inclined surface 333 presses against the locking ball 31, causing the locking ball 31 to partially enter the positioning hole, thereby locking the rotating member 1 onto the fixed member 2, preventing the rotating member 1 from rotating relative to the fixed member 2. When the button 33 is in the pressed state, the pushing inclined surface 333 removes the pressing action on the locking ball 31, the locking ball 31 disengages from the positioning hole, and releases the lock on the rotating member 1, allowing the rotating member 1 to rotate relative to the fixed member 2. The reset element 32 acts on the button 33 to apply a force to the button 33 to reset it from the pressed state to the released state. The locking component 3 of this application embodiment has a simple and reasonable structure and is easy to operate. The locking and unlocking of the rotating component 1 on the fixed component 2 can be achieved by pressing the button 33 with one hand.
[0053] In some embodiments, such as Figure 2As shown, the fixing component 2 includes a bushing 21, and a positioning hole is provided on the inner wall of the bushing 21, with the axis of the positioning hole aligned with the radial direction of the bushing 21. (See attached image.) Figure 4 .
[0054] like Figure 1 As shown, the rotating component 1 includes a shaft 11. The shaft 11 has a through hole 112 extending to one end in its axial direction. The through hole 112 is located on the outer peripheral wall of the shaft 11 and communicates with the shaft hole 112. (See also...) Figure 5 Button 33 is located within shaft hole 112 and can move along the axial direction of shaft hole 112 to switch between pressed and released states. The structural design of fixing member 2 and rotating member 1 is ingenious, simple and reasonable, which can reduce the difficulty of processing and manufacturing, and is lightweight, thus improving wearing comfort.
[0055] In some embodiments, such as Figure 6 As shown, the button 33 includes a rod portion 331 passing through the shaft hole 112 and a pressing portion 335 protruding from the shaft hole 112. The rod portion 331 includes a narrow diameter section, a wide diameter section, and a frustum section 332 for transitional connection between the narrow diameter section and the wide diameter section. The narrow diameter section is closer to the pressing portion 335 than the wide diameter section. The small diameter end of the frustum section 332 is connected to the narrow diameter section, and the large diameter end of the frustum section 332 is connected to the wide diameter section. The outer circumferential surface of the frustum section 332 forms a pushing slope 333. The manufacturing method of designing a frustum section 332 in the rod portion 331 of the button 33 to form the pushing slope 333 is simple and facilitates the effective cooperation between the pushing slope 333 and the locking ball 31.
[0056] The reset element 32 can be a spring. To avoid obstructing the pushing inclined surface 333 and affecting its effect on the locking ball 31, the spring can be internally integrated into the button 33. Specifically, for example... Figure 3 As shown, the rod portion 331 of the button 33 has a blind hole 334 at the end away from the pressing portion 335. The reset member 32 is disposed in the blind hole 334, with one end abutting the bottom of the blind hole 334 and the other end abutting the bottom of the shaft hole 112 of the shaft 11. When the button 33 is pressed, the reset member 32 is compressed and accumulates elastic potential energy. When the button 33 is released, the first reset member 32 releases the elastic potential energy and pushes the button 33 to move outward from the shaft hole 112.
[0057] It is understandable that the number of locking balls 31 in the locking component 3 is not limited. Using multiple locking balls 31 working together for locking can improve stability. However, setting too many locking balls 31 will increase the complexity of the structure and lead to increased cost and weight. This application preferably uses two locking balls 31 as an example for explanation. For ease of description, the two locking balls 31 are defined as the first locking ball 31 and the second locking ball 31, respectively.
[0058] The number of positioning holes in each group of positioning holes varies depending on the number of positions that the rotating component 1 needs to be positioned during the flipping process. For example, when the rotating component 1 only needs to be in the closed state (see...) Figure 9 ) and unfolded state (see Figure 7 When switching between the two positions, each set of positioning holes only needs to include two positioning holes. When the rotating component 1 rotates to the closed state, the locking ball 31 is in one of the positioning holes to keep the rotating component 1 stably in the closed state; when the rotating component 1 rotates to the unfolded state, the locking ball 31 is in the other positioning hole to keep the rotating component 1 stably in the unfolded state. If the rotating component 1 needs to be positioned not only in the closed and unfolded states, but also requires additional positioning positions between these two states (e.g., ... Figure 8 When the hole is in the raised position, a corresponding number of positioning holes need to be added between the two positioning holes.
[0059] The following explanation uses the example of rotating component 1 only needing to switch between the closed and unfolded states to illustrate the arrangement of the positioning holes.
[0060] The outer peripheral wall of the shaft 11 has two through holes 111. A locking ball 31 is installed in each of the two through holes 111. The inner wall of the bushing 21 has three positioning holes, located on the same circumference, and are designated as a first positioning hole 212, a second positioning hole 213, and a third positioning hole 214. The third positioning hole 214 forms a group with the first positioning hole 212 and corresponds to the first locking ball 31, which can lock into both the third positioning hole 214 and the first positioning hole 212. The third positioning hole 214 and the second positioning hole 213 form a group and correspond to the second locking ball 31, which can lock into both the third positioning hole 214 and the second positioning hole 213. That is, the two groups of positioning holes share the third positioning hole 214, which reduces the number of positioning holes and simplifies the structure. The distance between the third positioning hole 214 and the first positioning hole 212 and the second positioning hole 213 is the same. The central angle subtended by the arc between the third positioning hole 214 and the first positioning hole 212 is α, and the central angle subtended by the arc between the third positioning hole 214 and the second positioning hole 213 is β. α and β are equal and greater than 90°, preferably α and β are 120°. In this way, the rotation (flipping) angle of the rotating component 1 can be guaranteed.
[0061] When button 33 is pressed, the reset member 32 is compressed and accumulates elastic potential energy. Simultaneously, the push against the inclined surface 333 releases the pressure on the two locking balls 31, causing them to retract into the two through holes 111. At this time, the rotating member 1 can rotate (or flip) relative to the fixed member 2. When the rotating member 1 rotates to the closed state (first position), button 33 is released. Under the action of the reset member 32, button 33 switches from the pressed state to the released state, pushing against the inclined surface 333 and simultaneously pushing against the two locking balls 31, pressing the first locking ball 31 against the bottom or wall of the third positioning hole 214, and pressing the second locking ball 31 against the bottom or wall of the second positioning hole 213. This achieves the locking and fixing of the rotating member 1 in the closed state. When it is necessary to rotate the rotating component 1 to the unfolded state (second position), press the button 33 again. The pushing slope 333 on the button 33 moves away from the locking ball 31 and releases the pressure on the two locking balls 31, allowing the two locking balls 31 to move in the two through holes 111 respectively. At this time, the rotating component 1 can rotate relative to the fixed component 2. When the rotating component 1 rotates to the unfolded state, the button 33 is released. The button 33 switches from the pressed state to the released state under the action of the reset component 32. The pushing slope 333 pushes the two locking balls 31 at the same time, pressing the first locking ball 31 against the bottom or wall of the first positioning hole 212 and pressing the second locking ball 31 against the bottom or wall of the third positioning hole 214. This achieves locking and fixing in the unfolded state.
[0062] The rotary locking mechanism 10 of this application embodiment, through the cooperation of the locking ball 31, the through hole 111, the positioning hole and the button 33, can form a strong damping effect when the rotating component 1 rotates, thereby playing a role in eliminating gaps and constant damping, preventing the rotating component 1 from rotating too fast and affecting its position adjustment, and can achieve a certain angle of fixation. The fixation is reliable and greatly improves the use effect.
[0063] In some embodiments, such as Figure 2 As shown, the fixing component 2 also includes a fixing plate 22, which has a fixing hole 221. Two recesses 222 are provided on the wall of the fixing hole 221. Two protrusions 215 are provided on the outer peripheral wall of the bushing 21. The bushing 21 is fitted into the fixing hole 221, and the two protrusions 215 are correspondingly engaged with the two recesses 222 to fix the bushing 21 onto the fixing plate 22. The rotating component 1 also includes a first clamping plate 12 and a second clamping plate 13. The first clamping plate 12 and the second clamping plate 13 clamp the opposite sides of the fixing plate 22. The shaft 11 passes through the hole on the first clamping plate 12, the hole on the bushing 21, and the hole on the second clamping plate 13 in sequence, and is locked with the two clamping plates. This achieves the fixation of the shaft 11 to the two clamping plates, and when the shaft 11 rotates, it can drive the two clamping plates to rotate synchronously.
[0064] Furthermore, such as Figure 2 As shown, the other end of the shaft 11 is a flat cylindrical shape with an external thread 113. The second clamping plate 13 has a waist-shaped hole 131 that matches the other end of the shaft 11. The other end of the shaft 11 passes through the waist-shaped hole 131 and is connected to an adjusting nut 14. The tightness between the shaft 11 and the two clamping plates can be adjusted by adjusting the nut 14, thereby adjusting the tightness of the button 33 and improving the usability.
[0065] This application also provides a flip-up bracket, such as... Figures 7 to 9 As shown, the flip-up bracket includes two sliding adjustment mechanisms and a rotary locking mechanism 10 as described in any of the above embodiments. The rotating member 1 of the rotary locking mechanism 10 is connected to the first sliding adjustment mechanism 20, and the fixing member 2 of the rotary locking mechanism 10 is connected to the second sliding adjustment mechanism 30. That is, the rotary locking mechanism 10 achieves a rotational connection between the two sliding adjustment mechanisms. When the rotating member 1 rotates, it can drive the first sliding adjustment mechanism 20 to at least be in the closed state (see...). Figure 9 ) and unfolded state (see Figure 7 Switch between )
[0066] The flip bracket in this embodiment includes the rotation locking mechanism 10 of the above embodiment, which not only enables reliable fixing of the two sliding adjustment mechanisms after they are adjusted to a certain angle, greatly improving the use effect of the flip bracket, but also generates strong damping during rotation, playing a role in eliminating gaps and constant damping, preventing excessive rotation from affecting the position adjustment of the two sliding adjustment mechanisms, and improving the user experience.
[0067] In some embodiments, the first clamping plate 12 of the rotating member 1 is fixedly connected to the guide rail of the first sliding adjustment mechanism 20. The fixing plate 22 of the fixing member 2 is fixedly connected to the sliding seat of the second sliding adjustment mechanism 30. In this way, the first sliding adjustment mechanism 20 is fixed to the rotating member 1, and the second sliding adjustment mechanism 30 is fixed to the fixing member 2, so that the first sliding adjustment mechanism 20 can rotate relative to the second sliding adjustment mechanism 30 to close and unfold.
[0068] When the night vision device is worn on a helmet using the flip bracket of this embodiment, the night vision device is mounted on the sliding seat of the first sliding adjustment mechanism 20. The guide rail of the second sliding adjustment mechanism 30 is used as a mounting base to fix the guide rail of the second sliding adjustment mechanism 30 to the helmet.
[0069] When night vision devices are needed, press button 33 and use rotating component 1 to rotate the first sliding adjustment mechanism 20 to adjust it to the unfolded state. See [link / reference]. Figure 7 At this time, the guide rail of the first sliding adjustment mechanism 20 is roughly horizontal and located in front of the user's head, allowing the user to use the night vision device.
[0070] When the night vision goggles are not needed, press button 33, and the rotating component 1 will rotate the first sliding adjustment mechanism 20 to close it onto the helmet. See [link / reference]. Figure 9 To avoid obstructing the user's head and not interfere with their normal activities.
[0071] The locking mechanism of the flip bracket in this embodiment has a small gap, which can form a stable and reliable lock, avoiding shaking of the night vision device. Moreover, the adjustment operation is convenient and quick, and can be operated with one hand. At the same time, the flip bracket is lightweight, comfortable to wear, and has a better performance.
[0072] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.
Claims
1. A rotary locking mechanism, characterized in that, include: A rotating member having at least one through hole disposed around its outer periphery; A fixing member having a through hole, the fixing member being sleeved on the outside of the rotating member through the through hole, and the wall of the through hole having at least one set of positioning holes corresponding to at least one through hole; A locking assembly is disposed on the rotating member and includes a locking member capable of simultaneously being confined within at least one of the through holes and at least one of a corresponding set of positioning holes to lock the rotating member onto the fixed member, or capable of disengaging from the positioning holes to release the locking of the rotating member onto the fixed member, thereby allowing the rotating member to rotate relative to the fixed member.
2. The rotary locking mechanism according to claim 1, characterized in that, The locking element is a locking ball, and the number of the locking balls is the same as the number of the through holes, and they are movably disposed in the through holes in a one-to-one correspondence. The locking component also includes: A button, disposed on the rotating member and having a pushing slope, is movable relative to the rotating member to have a pressed state and a released state. When the button is in the released state, the pushing slope presses against the locking ball, causing the locking ball to partially enter the positioning hole, thereby locking the rotating member onto the fixed member. When the button is in the pressed state, the pushing slope releases its pressing action on the locking ball, the locking ball disengages from the positioning hole, and the locking of the rotating member is released, allowing the rotating member to rotate relative to the fixed member. A reset element acts on the button to apply a force to the button, resetting it from the pressed state to the released state.
3. The rotary locking mechanism according to claim 2, characterized in that, The fixing component includes a bushing, and the positioning hole is provided on the inner wall of the bushing; The rotating component includes a shaft with a through hole extending to one end in its axial direction. The through hole is located on the outer peripheral wall of the shaft and communicates with the shaft hole. The button is located inside the shaft hole and can move along the axial direction of the shaft hole to switch between the pressed state and the released state.
4. The rotary locking mechanism according to claim 3, characterized in that, The positioning hole is arranged along the radial direction of the bushing, and the through hole is arranged along the radial direction of the shaft; the diameter of the positioning hole is smaller than the diameter of the locking ball, and the diameter of the through hole is larger than the diameter of the locking ball.
5. The rotary locking mechanism according to claim 3, characterized in that, The button includes a rod portion passing through the shaft hole and a pressing portion protruding outside the shaft hole. The rod portion includes a narrow diameter section, a wide diameter section, and a frustum section for transitional connection between the narrow diameter section and the wide diameter section. The narrow diameter section is closer to the pressing portion than the wide diameter section. The small diameter end of the frustum section is connected to the narrow diameter section, and the large diameter end of the frustum section is connected to the wide diameter section. The outer peripheral surface of the frustum section forms the pushing slope.
6. The rotary locking mechanism according to claim 5, characterized in that, The reset component is a spring. The end of the button rod away from the pressing part has a blind hole inside it. The spring is located in the blind hole, with one end of the spring abutting the bottom of the blind hole and the other end abutting the bottom of the shaft hole of the shaft rod.
7. The rotary locking mechanism according to claim 3, characterized in that, The outer peripheral wall of the shaft is provided with two through holes, and a first locking ball and a second locking ball are respectively provided in the two through holes; The inner wall of the bushing is provided with three positioning holes located on the same circumference. The three positioning holes are a first positioning hole, a second positioning hole, and a third positioning hole. The first positioning hole and the second positioning hole are close to each other and far away from the third positioning hole. The third positioning hole is equidistant from the first positioning hole and the second positioning hole. The third positioning hole and the first positioning hole form one group, and the third positioning hole and the second positioning hole form another group. When the shaft of the rotating component rotates to the first position, the first locking ball limit is located in the third positioning hole, and the second locking ball limit is located in the second positioning hole. When the shaft of the rotating component rotates to the second position, the first locking ball is located in the first positioning hole, and the second locking ball is located in the third positioning hole.
8. The rotary locking mechanism according to claim 7, characterized in that, The central angle subtended by the arc between the third positioning hole and the first positioning hole is α, and the central angle subtended by the arc between the third positioning hole and the second positioning hole is β. α and β are equal and greater than 90°.
9. The rotary locking mechanism according to claim 3, characterized in that, The fixing component further includes a fixing plate, the fixing plate having a fixing hole, and the bushing being fitted into the fixing hole; The rotating component also includes a first clamping plate and a second clamping plate, which are clamped on opposite sides of the fixed plate. The other end of the shaft passes through the first clamping plate, the bushing, and the second clamping plate in sequence, and is threaded with an adjusting nut to lock it with the two clamping plates.
10. A flip-up bracket, comprising two sliding adjustment mechanisms, characterized in that, The flip bracket further includes a rotary locking mechanism as described in any one of claims 1 to 9, the rotary locking mechanism being used to rotatably connect the two sliding adjustment mechanisms so that the two sliding adjustment mechanisms can close or unfold relative to each other.