An adjustable bearing mechanism and its rotary locking mechanism

Abstract

A knob-type locking mechanism and an angle-adjustable support mechanism are disclosed. The knob-type locking mechanism includes a base, a knob, and a locking bolt. The knob is rotatably housed in the receiving space of the base and has a first braking part and a second braking part. The locking bolt is movably housed in the support part of the base along a straight line and has a latch, a first force-receiving part, and a second force-receiving part, with the first force-receiving part located between the latch and the second force-receiving part. When the knob is rotated in a first direction, the first braking part pushes the first force-receiving part, causing the latch to move along the locking straight line. When the knob is rotated in a second direction, the second braking part pushes the second force-receiving part, causing the latch to move along the unlocking straight line. The knob-type locking mechanism and support mechanism of the present invention have a simplified structure, can flexibly adjust the angle of the external device, can remove the external device in the unlocked state, do not require additional elastic elements, save internal space, reduce assembly steps, and reduce costs.

Description

Technical Field

[0001] This invention relates to an angle-adjustable support mechanism and its knob-type locking mechanism, and more particularly to a support mechanism capable of supporting an external device and adjusting the angle of the external device, and its knob-type locking mechanism, which locks the external device at the adjusted angle by rotation, or unlocks it to allow adjustment of the angle of the external device. Background Technology

[0002] Some wall-mounted devices require a mounting bracket (or wall mount) to be installed on a wall or other flat surface. In some cases, wall-mounted devices also need to allow users to adjust their angle, such as adjusting the direction of sound output, lighting, or the display screen of an audio-visual device. After adjustment, the device needs to be secured in its new position. In other specific cases, the wall-mounted device may also need to be removable from the mounting bracket, for example, to adjust certain settings.

[0003] In previous technologies, integrating the aforementioned angle adjustment, locking, unlocking, and removal functions into a single supporting mechanism resulted in a complex structure due to the difficulty in reducing the number of parts. For example, prior art utilizes a push bolt to achieve locking or unlocking; pushing the bolt in a straight line would occupy a large volume, hindering the miniaturization of the device. Alternatively, some prior art uses a spring to return the bolt to its original position, but this requires an additional spring, increasing the number of parts and assembly steps.

[0004] Therefore, there is a need to provide a knob-type locking mechanism and an angle-adjustable bearing mechanism including the knob-type locking mechanism to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a knob-type locking mechanism for a support mechanism in response to the above-mentioned various needs, which allows the angle (or direction) of the wall-mounted device (or external device) to be adjusted, and the wall-mounted device (or external device) can be fixed in the adjusted position after adjustment.

[0006] To solve the aforementioned technical problems, one technical solution adopted by the present invention is to provide a knob-type locking mechanism, which includes a base, a knob, and a locking bolt. The base has a supporting portion and a receiving space formed within the supporting portion. The knob is rotatably received within the receiving space of the base, and the knob has a first braking portion and a second braking portion. The locking bolt is movably received within the supporting portion of the base along a straight line, and the locking bolt has a latch, a first force-receiving portion, and a second force-receiving portion. The latch is located on one side of the first force-receiving portion, and the first force-receiving portion is located between the latch and the second force-receiving portion. When the knob rotates in a first direction, the first braking portion pushes the first force-receiving portion, thereby causing the latch of the locking bolt to move along a locking straight line. When the knob rotates in a second direction, the second braking portion pushes the second force-receiving portion, thereby causing the latch of the locking bolt to move along an unlocking straight line.

[0007] The technical problem to be solved by the present invention is to provide an angle-adjustable bearing mechanism in response to the above-mentioned various needs. This mechanism not only allows the angle (or direction) of the wall-mounted device (or external device) to be adjusted, but also allows the wall-mounted device (or external device) to be fixed in the adjusted position after adjustment. Furthermore, it also allows the wall-mounted device (or external device) to be removed from the bearing mechanism.

[0008] To address the aforementioned technical problems, another technical solution adopted by the present invention is to provide an adjustable-angle support mechanism for supporting an external device. The support mechanism includes a base, a knob, a locking member, and a rotating retaining member. The base has an accommodating space and a supporting portion, the accommodating space being formed within the supporting portion. The knob is rotatably accommodated in the accommodating space of the base, and the knob has a first braking portion and a second braking portion. The locking member is movably accommodated in the supporting portion of the base along a linear direction, and the locking member has a latch, a first force-bearing portion, and a second force-bearing portion. The latch is located on one side of the first force-bearing portion, and the first force-bearing portion is located between the latch and the second force-bearing portion. The rotating retaining member is rotatably disposed within the base, and the external device is connected to the rotating retaining member. When the knob is rotated in the first direction, the first braking part pushes the first force-receiving part, thereby causing the bolt of the locking member to move along a locking straight line direction, and pushing the rotating retaining member to be relatively fixed to the base; when the knob is rotated in the second direction, the second braking part pushes the second force-receiving part, thereby causing the bolt of the locking member to move along an unlocking straight line direction, and the rotating retaining member is in a rotatable state.

[0009] One of the advantages of this invention is that the knob-type locking mechanism requires only three components: a base, a knob, and a bolt. The double-cam structure of the knob allows the bolt to move forward or backward, achieving both locking and unlocking functions, resulting in a simplified structure. The supporting mechanism of this invention, combining the knob-type locking mechanism and a rotating retaining member, allows for flexible adjustment of the angle of the external device and also allows for removal of the external device in the unlocked state. The knob-type locking mechanism saves space compared to linear movement bolt mechanisms.

[0010] Compared to prior art, which typically utilizes springs to provide a reset function, this invention eliminates the need for additional elastic elements, simplifies the number of components, saves space within the mechanism, reduces assembly steps, and lowers costs.

[0011] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0012] Figure 1 This is a perspective view of the adjustable-angle bearing mechanism and external device of the present invention.

[0013] Figure 2 This is an exploded view of the adjustable-angle bearing mechanism and external device of the present invention.

[0014] Figure 3 This is an exploded perspective view of the angle-adjustable bearing mechanism of the present invention.

[0015] Figure 4A This is a top-view exploded perspective view of the knob-type locking mechanism of the present invention.

[0016] Figure 4B This is an exploded perspective view of the knob-type locking mechanism of the present invention.

[0017] Figure 5 This is an exploded cross-sectional view of the knob-type locking mechanism of the present invention.

[0018] Figure 6 The rotary locking mechanism of the present invention is along Figure 2 A sectional view along line VI-VI.

[0019] Figure 7A The rotary locking mechanism of the present invention is along Figure 2 A cross-sectional view of lines VIIA-VIIA in the unlocked state.

[0020] Figure 7B This is a bottom view of the knob-type locking mechanism of the present invention in the unlocked state.

[0021] Figure 8A The rotary locking mechanism of the present invention is along Figure 2 A cross-sectional view of lines VIIA-VIIA during the locking process.

[0022] Figure 8B This is a bottom view of the knob-type locking mechanism of the present invention during the locking process.

[0023] Figure 9A The rotary locking mechanism of the present invention is along Figure 2 A cross-sectional view of lines VIIA-VIIA in the locked state.

[0024] Figure 9B This is a bottom view of the knob-type locking mechanism of the present invention in the locked state.

[0025] Explanation of key component symbols:

[0026] 10 bases

[0027] 100 load-bearing mechanism

[0028] 11 base plate

[0029] 11S storage space

[0030] 12 sidewalls

[0031] 120 positioning groove

[0032] 13. Bearing section

[0033] 132 Holding Arm

[0034] 133 Baffle

[0035] 19 Wall mount

[0036] 20 knobs

[0037] 21 Knob body

[0038] 22 rods

[0039] 221 First Braking Unit

[0040] 222 Second Braking Unit

[0041] 23. Grip section

[0042] 251 First Hook

[0043] 252 Second Hook

[0044] 30 Locking bolts

[0045] 31 Top Wall

[0046] 32 Side extension walls

[0047] 33 First stress-bearing part

[0048] 34. Bolt

[0049] 35 Second stress-bearing part

[0050] 37 Hook Arm

[0051] 40 Rotating retainer

[0052] 41 Rotating base

[0053] 410 positioning hole

[0054] 412 Flexible Positioning Arm

[0055] 42 Bearing base

[0056] 9 External devices

[0057] D1 First Direction

[0058] D2 Second Direction

[0059] D3 Lock Straight Direction

[0060] D4 Unlocks the straight line direction

[0061] R Rotary locking mechanism

[0062] S1 First arc groove

[0063] S2 Second Arc-shaped Groove

[0064] Y-axis Detailed Implementation

[0065] The following specific embodiments illustrate the implementation methods disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated in advance. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention.

[0066] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the associated listed items.

[0067] See Figures 1 to 3 The diagram shows an adjustable-angle support mechanism 100, or simply support mechanism 100. The support mechanism 100 supports an external device 9. The external device 9 can be any device requiring wall mounting. The support mechanism 100 includes a knob-type locking mechanism R and a rotating retaining member 40. The external device 9 is fixedly connected to the rotating retaining member 40, for example, by a screw or clip. The knob-type locking mechanism R can lock or unlock the rotating retaining member 40. When the rotating retaining member 40 is unlocked, it is in a rotatable state, allowing the external device 9 to freely adjust its angle on the support mechanism 100. When the rotating retaining member 40 is locked, it is in a non-rotatable state, fixed to the knob-type locking mechanism R, thus fixing the external device 9 to the support mechanism 100 at the adjusted angle.

[0068] like Figure 4A and Figure 4B As shown, the rotary locking mechanism R includes a base 10, a knob 20, and a locking bolt 30. The base 10 can be fixed to a wall or other fixable surface. The base 10 has a receiving space 11S and a supporting portion 13, with the receiving space 11S formed within the supporting portion 13. The supporting portion 13 is located on one side of the receiving space 11S.

[0069] The knob 20 is rotatably housed in the receiving space 11S of the base 10; specifically, the knob 20 is exposed on the bottom surface of the base 10. In this embodiment, the knob 20 has a first braking part 221 and a second braking part 222.

[0070] Locking bolt 30 is along a straight direction (e.g.) Figure 8A The lock's straight direction D3, or Figure 7A The locking bolt 30 is movably housed in the support portion 13 of the base 10 in the unlocking linear direction (D4). Specifically, the locking bolt 30 is exposed on the top surface of the base 10. The locking bolt 30 has a latch 34, a first force-bearing portion 33, and a second force-bearing portion 35. The latch 34 is located on one side of the first force-bearing portion 33, and the first force-bearing portion 33 is located between the latch 34 and the second force-bearing portion 35.

[0071] One feature of the present invention is that, by means of the above-described structural arrangement, the locking bolt 30 can be locked or unlocked by rotating the knob 20 in different directions. Specifically, the knob 20 can be rotated in the first direction D1 (e.g., ...). Figure 3 When rotated (in the counterclockwise direction shown), the first braking part 221 pushes the first force-receiving part 33, thereby causing the locking bolt 34 of the locking bolt 30 to move along a locking straight line direction D3 (see figure). Figure 3 and Figure 9A Or, in other words, moving forward towards the wall seat 19 of the base 10; wherein the knob 20 is in the second direction D2 (such as...). Figure 3 When rotated clockwise (as shown), the second braking part 222 pushes the second force-receiving part 35, thereby causing the locking bolt 34 of the locking bolt 30 to move along an unlocking straight line direction D4 (see figure). Figure 3 and Figure 7A Or, in other words, moving backward away from the wall seat 19 of the base 10. The knob-type locking mechanism R of this embodiment saves space compared to the linear movement type locking bolt mechanism.

[0072] like Figure 3 , Figure 4A and Figure 4B As shown, in this embodiment, the knob 20 has a knob body 21, a grip portion 23 disposed on one side of the knob body 21, and a rod 22 connected to the other side of the knob body 21. The rod 22 has a central axis Y, and a first braking portion 221 and a second braking portion 222 protrude outward from the rod 22.

[0073] Specifically, the first braking part 221 of the knob 20 is cam-shaped, and the first braking part 221 and the second braking part 222 are respectively disposed at different heights on the lever 22. (See reference...) Figure 3 and Figure 4A The second braking part 222 is partially connected to the first braking part 221 and extends beyond the top surface of the first braking part 221.

[0074] like Figure 4A and Figure 4B As shown, the locking bolt 30 has a top wall 31 and a pair of side extension walls 32 extending rearward from the top wall 31. A first force-bearing portion 33 is connected to the front edge of the top wall 31. In this embodiment, the back surface of the first force-bearing portion 33 is flat, and its front surface is arc-shaped. The bolt 34 protrudes forward from the front surface of the first force-bearing portion 33. In this embodiment, a second force-bearing portion 35 extends rearward in a U-shape from the rear end surface of the first force-bearing portion 33.

[0075] like Figure 5 As shown, the distance D1 between the end of the first braking part 221 and the central axis Y is greater than the distance D2 between the end of the second braking part 222 and the central axis Y. Corresponding to the design of the first braking part 221 and the second braking part 222, as follows... Figure 4A and Figure 4B As shown, the first force-bearing part 33 and the second force-bearing part 35 are also located at different heights. The first force-bearing part 33 is connected to the front end face of the bolt 30, and the second force-bearing part 35 protrudes slightly from the top wall 31 of the bolt 30.

[0076] like Figure 5 As shown, the base 10 has a base plate 11 and a sidewall 12 connected around the base plate 11. A receiving space 11S is formed on the base plate 11, and a supporting part 13 is disposed on the base plate 11. Specifically, the receiving space 11S has a first arc-shaped groove S1 and a second arc-shaped groove S2. The first arc-shaped groove S1 and the second arc-shaped groove S2 are respectively formed in a hollow shape on the base plate 11. The knob 20 has a first hook 251 and a second hook 252. The first hook 251 and the second hook 252 protrude from the knob body 21 and are located on opposite sides of the central axis Y. The first hook 251 is movably engaged with the first arc-shaped groove S1, and the second hook 252 is movably engaged with the second arc-shaped groove S2. In this embodiment, the first arc-shaped groove S1 is slightly fan-shaped and can also allow the rod 22 of the knob 20 to pass through; the second arc-shaped groove S2 is slightly arc-shaped. The first arc-shaped groove S1 and the second arc-shaped groove S2 can respectively limit the rotation angle of the first hook 251 and the second hook 252. In this embodiment, the first hook 251 and the second hook 252 are the same and can be distinguished; however, the present invention is not limited thereto.

[0077] like Figure 4A and Figure 5 , Figure 6 As shown, the bearing portion 13 has a pair of retaining arms 132, which protrude from the base 10 and are located opposite each other on both sides of the accommodating space 11S, and the locking bolt 30 has a pair of hook arms 37. Figure 6 As shown, the retaining arm 132 of the bearing portion 13 hooks onto the latch arm 37 of the bolt member 30. A pair of latch arms 37 are slidably located on a pair of retaining arms 132, thereby preventing the bolt member 30 from detaching upward from the bearing portion 13 and restricting the bolt member 30 from moving relative to the bearing portion 13 in a straight line. Specifically, a pair of latch arms 37 of the bolt member 30 protrude from the bottom surface of the top wall 31 and are located between a pair of side extension walls 32. Both the knob 20 and the bolt member 30 are located on one side of the center of the side wall 12 of the base 10.

[0078] In this embodiment, the support portion 13 has another function: it has a baffle 133 that is higher than the pair of retaining arms 132. When the bolt 30 engages with the support portion 13 and moves on the support portion 13, the baffle 133 can prevent the top wall 31 of the bolt 30 from disengaging outward from the support portion 13 within a predetermined displacement range.

[0079] See also Figure 3The rotating retainer 40 is rotatably disposed within the base 10, and the external device 9 is connected to the rotating retainer 40. The rotating retainer 40 has a cylindrical rotating base 41, which has a plurality of positioning holes 410 and a plurality of elastic positioning arms 412. In this embodiment, there are three positioning holes 410, and the latch 34 of the locking bolt 30 can selectively enter one of the positioning holes 410 to lock the rotating retainer 40. In other words, this embodiment allows the rotating base 41 to rotate between three angles; however, the number of positioning holes in this invention is not limited to this, and the number of positioning holes can be increased, thus allowing the rotating base 41 to rotate relative to the base 10 at more angles.

[0080] The base 10 has an annular sidewall 12, with multiple positioning grooves 120 on its inner side. The number of elastic positioning arms 412 is less than the number of positioning grooves 120. By rotating the base 41, the elastic positioning arms 412 engage with the positioning grooves 120, allowing the rotating retaining member 40 to be positioned in multiple segments on the base 10. Furthermore, in this embodiment, the spacing between the positioning holes 410 is equal to the spacing between the positioning grooves 120. In other words, each time the retaining member 40 is rotated, as the elastic positioning arm 412 slides to the next positioning groove 120, the positioning hole 410 correspondingly undergoes the same displacement, ensuring that the latch 34 of the locking member 30 can still be aligned with the next positioning hole 410.

[0081] The rotating retainer 40 also has a support base 42, which is connected to one end of the rotating base 41 and is used to support the external device 9. The support base 42 can be connected to the bottom of the external device 9 by means of hooks, screws, etc.

[0082] One point to note is that when the locking bolt 30 is not locked, the elastic positioning arm 412 of the rotating retainer 40 elastically abuts against the positioning groove 120 of the base 10. The rotating base 41 can rotate in multiple stages within the base 10 to adjust the angle, and the rotating retainer 40 can also be removed from the base 10 by applying outward force. In other words, the external device 9, along with the rotating retainer 40 located at its bottom, can be directly removed from the supporting mechanism 100 (e.g., Figure 2 (As shown). At this time, the user can easily remove the external device 9 for adjustment, maintenance, or settings. For example, as... Figure 3 As shown, in this embodiment, one half of the cylindrical rotating base 41 is provided with two elastic positioning arms 412 (the other half also has two, not shown in the figure). Figure 5 As shown, each of the two halves of the inner sidewall 12 of the base 10 has six positioning grooves 120, and each elastic positioning arm 412 can move between three positioning grooves 120. However, the present invention is not limited to this, wherein the number of elastic positioning arms can be at least one, and the number of positioning grooves can be more, that is, the rotating base 41 can rotate in more segments within the base 10.

[0083] The top cross-sectional view of the assembled support mechanism 100 in this embodiment is shown below. Figure 7A As shown. Figure 7B This is a bottom view. Figure 7A and Figure 7B The state indicates that the locking bolt 30 is not close to the base 10, that is, the rotating retainer 40 is not locked. In other words, the latch 34 of the locking bolt 30 is away from the side wall 12 of the base 10. At this time, the rotating retainer 40 can rotate within the base 10. The second braking part 222 of the knob 20 abuts against the second force-receiving part 35 of the locking bolt 30.

[0084] like Figure 8A and Figure 8B As shown, when the knob 20 begins to rotate in the first direction D1, that is, when the grip portion 23 of the knob 20 is rotated, the first braking portion 221 pushes the first force-receiving portion 33 of the locking bolt 30, and the second braking portion 222 disengages from the second force-receiving portion 35 of the locking bolt 30. The locking bolt 30 moves along the locking bolt's straight line direction D3 (e.g., ...). Figure 8A (As shown) can be movably housed in the base 10.

[0085] like Figure 9A and Figure 9B As shown, when the knob 20 is rotated about 90 degrees in the first direction D1, the first braking part 221 of the knob 20 drives the latch 34 of the locking bolt 30 to approach the base 10 and enter one of the positioning holes 410 of the rotating retainer 40, so that the rotating retainer 40 is relatively fixed to the base 10.

[0086] like Figure 7A and Figure 7B As shown, when the user wants to unlock the bolt 30, he rotates the knob 19 in the second direction D2. The second braking part 222 then pushes the second force receiving part 35, thereby causing the bolt 34 of the bolt 30 to move along the unlocking straight line D4 (see figure). Figure 7A The rotating retainer 40 is moved away from the rotating retainer 40 and the wall seat 19 of the base 10, and the rotating retainer 40 is in a rotatable state.

[0087] [Beneficial Effects of the Examples]

[0088] One of the advantages of this invention is that the knob-type locking mechanism R provided by this invention achieves locking and unlocking functions with only three parts: a base 10, a knob 20, and a locking bolt 30, resulting in a simplified structure. The knob 20 has a double-cam structure with a first braking part 221 and a second braking part 222. By rotating the knob 20, it can move the locking bolt 30 closer to the base 10 in a straight line to achieve locking or further away from the base 10 to achieve unlocking. The supporting mechanism 100 of this invention, combined with the knob-type locking mechanism R and the rotating retaining member 40, allows for flexible adjustment of the angle of the external device and also allows the external device to be removed in the unlocked state.

[0089] Prior art typically utilizes springs to provide a reset function. This invention does not require another elastic element. The knob 20 of this invention has a double cam structure, which can achieve the function of pushing or resetting. This simplifies the number of components, saves space within the mechanism, reduces assembly steps, and lowers costs.

[0090] The above-disclosed content is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims of the present invention. Therefore, any equivalent technical changes made based on the description and drawings of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A knob-type locking mechanism, the knob-type locking mechanism comprising: A base having a support portion and an accommodating space formed within the support portion; A knob is rotatably housed in the receiving space of the base. The knob has a first braking part and a second braking part, the second braking part extending beyond the top surface of the first braking part. The first braking part and the second braking part are located at different heights. as well as A locking bolt is movably housed in the bearing portion of the base along a straight direction. The locking bolt has a latch, a first force-bearing portion, and a second force-bearing portion. The latch is located on one side of the first force-bearing portion, the first force-bearing portion is located between the latch and the second force-bearing portion, and the first force-bearing portion and the second force-bearing portion are located at different heights. When the knob is rotated in the first direction, the second braking part moves away from the second force receiving part, and the first braking part pushes the first force receiving part, thereby causing the bolt of the locking bolt to move along a locking straight line direction; When the knob is rotated in the second direction, the second braking part pushes the second force-receiving part, thereby causing the latch of the locking bolt to move along an unlocking straight line direction.

2. The knob-type locking mechanism as claimed in claim 1, wherein the knob has a knob body, a grip portion disposed on one side of the knob body, and a rod body connected to the other side of the knob body, the rod body having a central axis, and the first braking portion and the second braking portion protruding outward from the rod body.

3. The knob-type locking mechanism as described in claim 2, wherein the first braking part is cam-shaped, the first braking part and the second braking part are respectively disposed at different heights on the rod, and the distance between the end of the first braking part and the central axis is greater than the distance between the end of the second braking part and the central axis.

4. The knob-type locking mechanism as claimed in claim 2, wherein the base has a base plate and a sidewall connected around the base plate, the accommodating space is formed on the base plate and disposed on the base plate along with the supporting part, the accommodating space has a first arc-shaped groove and a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are respectively formed in a hollow shape on the base plate, the knob has a first hook and a second hook, the first hook and the second hook protrude from the knob body and are located opposite each other on both sides of the central axis, the first hook is movably engaged with the first arc-shaped groove, and the second hook is movably engaged with the second arc-shaped groove.

5. The knob-type locking mechanism as claimed in claim 4, wherein the supporting portion has a pair of retaining arms that protrude from the base plate and are located opposite each other on both sides of the accommodating space, and the locking bolt has a pair of hook arms that are movably located between the pair of retaining arms.

6. An adjustable-angle support mechanism for supporting an external device, the adjustable-angle support mechanism comprising: A base having a support portion and an accommodating space formed within the support portion; A knob, rotatably housed in the receiving space of the base, the knob having a first braking part and a second braking part; A locking bolt, movably housed in the bearing portion of the base along a straight direction, the locking bolt having a latch, a first force-bearing portion, and a second force-bearing portion, the latch being located on one side of the first force-bearing portion, and the first force-bearing portion being located between the latch and the second force-bearing portion; and A rotating retainer is rotatably disposed within the base, and the external device is connected to the rotating retainer; When the knob is rotated in the first direction, the second braking part moves away from the second force receiving part, and the first braking part pushes the first force receiving part, thereby causing the bolt of the locking member to move along a locking straight line direction and locking the rotating retaining member to the base; When the knob is rotated in the second direction, the second braking part pushes the second force-receiving part, thereby causing the bolt of the locking bolt to move along an unlocking straight line, and the rotating retaining member is in a rotatable state.

7. The angle-adjustable bearing mechanism as claimed in claim 6, wherein the knob has a knob body, a grip portion disposed on one side of the knob body, and a rod body connected to the other side of the knob body, the rod body having a central axis, and the first braking portion and the second braking portion protruding outward from the rod body.

8. The angle-adjustable bearing mechanism as claimed in claim 7, wherein the first braking part is cam-shaped, the first braking part and the second braking part are located at different heights on the rod, the distance between the end of the first braking part and the central axis is greater than the distance between the end of the second braking part and the central axis, and the first force-receiving part and the second force-receiving part are located at different heights.

9. The angle-adjustable support mechanism as claimed in claim 7, wherein the base has a base plate and a sidewall connected to the periphery of the base plate, the accommodating space and the support portion are formed on the base plate, the accommodating space has a first arcuate groove and a second arcuate groove, the first arcuate groove and the second arcuate groove are respectively formed in a hollowed-out shape on the base plate, the knob has a first hook and a second hook, the first hook and the second hook protrude from the knob body and are located opposite each other on both sides of the central axis, the first hook is movably engaged with the first arcuate groove, and the second hook is movably engaged with the second arcuate groove.

10. The angle-adjustable bearing mechanism of claim 9, wherein the bearing portion has a pair of retaining arms that protrude from the substrate and are located opposite each other on both sides of the accommodating space, and the locking member has a pair of hook arms that are movably located between the pair of retaining arms.

11. The angle-adjustable bearing mechanism as claimed in claim 10, wherein the rotating retaining member has a rotating base, the rotating base having a plurality of elastic positioning arms; wherein the sidewall of the base is annular, the inner side of the sidewall has a plurality of positioning grooves, and the plurality of elastic positioning arms can elastically abut against the plurality of positioning grooves of the base.

12. The angle-adjustable bearing mechanism of claim 10, wherein the rotating base is formed with a plurality of positioning holes, wherein the latch of the locking member can selectively enter one of the positioning holes to lock the rotating retainer to the base.

13. The angle-adjustable bearing mechanism as claimed in claim 11, wherein the knob and the locking bolt are both located on one side of the center of the sidewall of the base.

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