Supporting legs

Abstract

This utility model relates to a support stand, belonging to the technical field of support equipment. It includes a main rod, a connecting seat, a support foot, a locking mechanism, and an unlocking mechanism. The connecting seat is sleeved on the main rod. One end of the support foot is rotatably connected to the connecting seat, while the other end is a free end. The support foot can be extended or retracted onto the main rod. When the support foot is retracted, the locking mechanism restricts the free end of the support foot from moving away from the main rod. The unlocking mechanism includes a mounting base and an unlocking button. The mounting base is located at the end of the main rod, and the unlocking button is located on the mounting base. The side of the unlocking button is inclined. When the support foot is retracted, the inclined surface of the unlocking button approaches the free end of the support foot. When the unlocking button is triggered, it moves, causing the inclined surface of the unlocking button to press against the free end of the support foot, causing the free end of the support foot to move away from the main rod, thus releasing the restriction of the locking mechanism. This utility model is more time-saving, labor-saving, and easier to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of support equipment, and in particular to a support leg. Background Technology

[0002] Stands are common accessories used to stably support various electronic devices such as projectors, smartphones, and cameras. Their core function is to provide a stable support platform, ensuring the device remains stable in various usage scenarios and preventing it from tipping over or wobbling. For ease of carrying and storage, modern stand designs are generally foldable, typically consisting of a main pole and several support legs hinged to the main pole. When not in use, the support legs can be folded close to the main pole, significantly reducing the overall size. When in use, the support legs unfold to form a support surface, working together with the main pole to support the device placed on it.

[0003] In order to prevent the retractable support legs from accidentally unfolding when they are retracted, existing retractable support legs generally have an independent locking mechanism between the main rod and each support leg. When the support leg is retracted, the locking mechanism can securely lock the support leg to the main rod to ensure stability in the retracted state. When it needs to be unfolded for use, the locking mechanism is opened to release the locking state, and each support leg can be manually unfolded to the working position.

[0004] Although the retractable support legs mentioned above can effectively prevent accidental opening when the support legs are retracted, in the actual unfolding process, it is still necessary to manually unlock the locking mechanism on each support leg one by one in order to unfold it. This is inconvenient, time-consuming and laborious, especially in scenarios with a large number of support legs or where frequent unfolding and retraction are required. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a support bracket to solve the technical problems of inconvenience, time and effort in the use of the prior art.

[0006] This utility model provides a support frame, comprising:

[0007] Main shaft;

[0008] The connecting seat is sleeved on the main rod;

[0009] The support leg has one end rotatably connected to the connecting seat and the other end is a free end. The support leg can be extended or retracted to the main rod.

[0010] The locking mechanism restricts the free end of the support leg from moving away from the main rod when the support leg is retracted.

[0011] The unlocking mechanism includes a mounting base and an unlocking button. The mounting base is disposed at the end of the main rod, and the unlocking button is disposed on the mounting base, with the side of the unlocking button being an inclined surface.

[0012] When the support leg is retracted, the inclined surface of the unlock button approaches the free end of the support leg. When the unlock button is triggered, the unlock button moves, causing the inclined surface of the unlock button to press against the free end of the support leg. The free end of the support leg moves away from the main rod, releasing the restriction of the locking mechanism.

[0013] Optionally, it also includes an elastic element disposed between the unlock button and the mounting base; when the unlock button moves toward the main rod under the action of an external force, the elastic element is compressed and generates a restoring force that causes the unlock button to move away from the main rod.

[0014] Optionally, the mounting base has a placement groove, which is located on the side of the mounting base facing away from the main rod. The elastic element is located in the placement groove and one end of it abuts against the bottom of the placement groove. The unlock button extends into the placement groove and abuts against the elastic element at one end facing the placement groove.

[0015] Optionally, a limiting member is provided at the opening of the placement slot, and the unlock button includes a head and a connecting part connected to the head. The connecting part is located in the placement slot and abuts against the limiting member. One end of the head connected to the connecting part passes through the limiting member and slides on the limiting member.

[0016] Optionally, the head includes a pressing part and a sliding part, wherein the sliding part passes through the limiting member and slides on the limiting member, the connecting part is disposed at the end of the sliding part, the pressing part is located outside the placement groove and is detachably connected to the end of the sliding part opposite to the connecting part, and the inclined surface is disposed on the side of the pressing part.

[0017] Optionally, a limiting groove is formed on the side of the connecting part facing away from the head, and one end of the elastic member is located in the limiting groove and fits against the inner wall of the limiting groove.

[0018] Optionally, a guide rod is provided on the connecting part facing away from the head, the elastic element is sleeved on the guide rod and can slide on the guide rod, and the end of the guide rod facing away from the connecting part passes through the mounting base wall of the placement groove bottom.

[0019] Optionally, it also includes a support rod, one end of which is rotatably connected to the support foot, and the other end of which is rotatably connected to the mounting base.

[0020] Optionally, the locking mechanism includes:

[0021] A first magnetic suction element is disposed on the support leg;

[0022] The second magnetic component is disposed on the support rod. When the support leg is retracted, the first magnetic component and the second magnetic component are attracted and fixed together.

[0023] Optionally, both the support foot and the support rod are provided with storage slots, and the first magnetic member and the second magnetic member are both disposed in the corresponding storage slots.

[0024] The technical solution of this utility model has the following advantages:

[0025] 1. The support leg provided by this utility model can be moved by triggering the unlock button with external force. The inclined surface of the moving unlock button can continuously squeeze the free end of the support leg, so that the free end of all the support legs moves away from the main rod, thereby releasing the restriction of the locking mechanism and putting all the support legs in an unfolded or unfoldable state. Compared with manually unlocking and locking the mechanism one by one, it is more time-saving and labor-saving, and the operation is more convenient and easy. It only requires external force to trigger the unlock button.

[0026] 2. The support bracket provided by this utility model has an elastic element. When the unlock button releases the locking mechanism and the external force is removed, the compressed elastic element has elastic deformation, which can drive the unlock button to move away from the main rod until the unlock button returns to its initial position. The unlock button can be restored without the assistance of external force, making the operation convenient.

[0027] 3. By using the first and second magnetic components to limit the position of the support leg when it is retracted, this application achieves a "lifting rod" effect compared to existing buckle locking structures. That is, in the unfolded state, the user can simply lift the connecting base upwards to fully retract the support leg to the locked state. If a buckle structure is used, after the support leg is retracted to a certain extent, it is necessary to press the support leg manually or press the unlock button to fully retract the support leg to the locked state. The magnetic design of this application eliminates this operation. Simply lifting the connecting base upwards allows the support leg and support rod to move closer together until the first and second magnetic components attract each other, locking the support leg. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the support frame of this utility model;

[0030] Figure 2 This is a schematic diagram of the support leg in the extended state in this utility model;

[0031] Figure 3 This is a schematic diagram of the rear structure of the present invention with the support legs in the unfolded state;

[0032] Figure 4 for Figure 3 Enlarged view of section A;

[0033] Figure 5 This is an exploded view of the unlocking mechanism in this utility model;

[0034] Figure 6 for Figure 5 Enlarged view of section C;

[0035] Figure 7 This is a schematic diagram of the unlocking mechanism in this utility model;

[0036] Figure 8 This is a cross-sectional view of the internal structure of the unlocking mechanism in this utility model;

[0037] Figure 9 This is a schematic diagram of the support foot in this utility model;

[0038] Figure 10 for Figure 7 Enlarged view of section B in the middle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Main rod; 2. Connecting seat; 3. Support foot; 4. Locking mechanism; 41. Storage slot; 42. First magnetic suction element; 43. Second magnetic suction element; 5. Unlocking mechanism; 51. Mounting seat; 52. Unlocking button; 521. Head; 5211. Pressing part; 5212. Sliding part; 522. Connecting part; 53. Elastic element; 54. Inclined surface; 6. Placement slot; 7. Limiting element; 8. Limiting slot; 9. Guide rod; 10. Support rod; 11. Inclined plate; 12. Slot; 13. Block. Detailed Implementation

[0041] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0042] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0043] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0045] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0046] Example

[0047] Reference Figures 1-10 As shown, this utility model provides a support stand, including a main rod 1, a connecting seat 2, a support foot 3, a locking mechanism 4, and an unlocking mechanism 5. The main rod 1 is a straight rod, and the connecting seat 2 is annular and sleeved on the main rod 1. The connecting seat 2 and the main rod 1 are coaxially arranged, and the connecting seat 2 can slide along the length of the main rod 1. One end of the support foot 3 is rotatably connected to the bottom wall of the connecting seat 2, and the other end is a free end. The support foot 3 can be unfolded or retracted onto the main rod 1. When the support foot 3 is retracted, it fits against the outer surface of the main rod 1 and is parallel to the main rod 1. During the unfolding process, the connecting seat 2 moves downward, and the free end of the support foot 3 continuously moves away from the main rod 1 until the rotation angle between the support foot 3 and the connecting seat 2 reaches its maximum, forming a support structure. The locking mechanism 4 is located between the main rod 1 and the support foot 3. When the support foot 3 is retracted, the locking mechanism 4 restricts the free end of the support foot 3 from rotating away from the main rod 1, making it easy to store when not in use.

[0048] The unlocking mechanism 5 includes a mounting base 51 and an unlocking button 52. The mounting base 51 is fixedly installed at the bottom of the main rod 1, and the unlocking button 52 is installed on the mounting base 51. The side of the unlocking button 52 facing the support leg 3 is set as an inclined surface 54. When the support leg 3 is retracted, the inclined surface 54 of the unlocking button 52 is close to the free end of the support leg 3 and fits against the side wall of the free end. When the unlocking button 52 is triggered, the unlocking button 52 moves, causing the inclined surface 54 of the unlocking button 52 to press against the free end of the support leg 3. The free end of the support leg 3 moves away from the main rod 1, releasing the restriction of the locking mechanism 4. At this time, the support leg 3 is no longer restricted by the locking mechanism 4. When the connecting base 2 is moved downward, the support leg 3 can be easily unfolded.

[0049] By triggering the unlock button 52 with external force, the unlock button 52 can be pushed to move. The inclined surface 54 of the moving unlock button 52 can continuously squeeze the free end of the support leg 3, causing all the free ends of the support legs 3 to move away from the main rod 1, thereby releasing the restriction of the locking mechanism 4. At this time, all the support legs 3 are in an unfolded or unfoldable state. Compared with manually unlocking the locking mechanism 4 one by one, it is more time-saving and labor-saving, and the operation is more convenient and easy. Only external force is needed to trigger the unlock button 52.

[0050] In this embodiment, the number of support feet 3 is set to three, but it is not limited to only three; it can also be four, five, or other numbers.

[0051] In this embodiment, the unlock button 52 can be triggered by pressing it with a hand or by impacting the ground, but it is not limited to these methods.

[0052] To facilitate the pressing of the free end of the support leg 3 by the inclined surface 54, an inclined pressure surface 11 is provided on the side of the free end of the support leg 3 facing the unlock button 52. The inclination angles of the pressure surface 11 and the inclined surface 54 are matched, so that when the support leg 3 is retracted, the inclined surface 54 of the unlock button 52 can be close to or fit against the pressure surface 11. The inclined surface 54 is inclined from the side closer to the main rod 1 towards the corresponding support leg 3, so as to ensure that when the external force presses the unlock button 52, the inclined surface 54 of the unlock button 52 can press the pressure surface 11, thereby causing the free end of the support leg 3 to move away from the main rod 1 and release the restriction of the locking mechanism 4.

[0053] As one specific implementation method, refer to Figure 5-8As shown, the mounting base 51 has a placement groove 6, which is located on the end of the mounting base 51 facing away from the main rod 1. One end of the unlocking button 52 is connected to the placement groove 6. Specifically, one end of the unlocking button 52 extends into the placement groove 6 and can slide along the depth of the groove 6. When the unlocking button 52 is triggered, it moves towards the main rod 1, causing the inclined surface 54 of the unlocking button 52 to press against the free end of the support leg 3, causing the free end of the support leg 3 to move away from the main rod 1 and release the restriction of the locking mechanism 4. In this embodiment, the end of the unlocking button 52 located outside the placement groove 6 is used to receive external stimuli to move the unlocking button.

[0054] Furthermore, the unlocking mechanism 5 also includes an elastic element 53, which is disposed between the unlocking button 52 and the mounting base 51. When the unlocking button 52 moves towards the main rod 1 under the action of an external force, the elastic element 53 is compressed, generating a restoring force that causes the unlocking button 52 to move away from the main rod 1. Specifically, the elastic element 53 is disposed in the placement groove 6 and one end abuts against the bottom of the placement groove 6, while the end of the unlocking button 52 located in the placement groove 6 abuts against the other end of the elastic element 53. In this embodiment, the elastic element 53 can be set as a spring, a sheet, or other elastic structure, and is not limited to a single type.

[0055] By setting the elastic element 53, when the unlock button 52 releases the restriction of the locking mechanism 4 and the external force is removed, the compressed elastic element 53 has elastic deformation, which can drive the unlock button 52 to move away from the main rod 1 until the unlock button 52 returns to the initial position. The unlock button 52 can be restored without the assistance of external force, making the operation convenient.

[0056] Reference Figure 3 and 8 As shown, in order to prevent the unlock button 52 from sliding out of the placement slot 6, a limiting member 7 is provided at the opening of the placement slot 6. The limiting member 7 is located inside the placement slot 6 and abuts against the side wall of the placement slot 6. The limiting member 7 is detachably connected to the mounting base 51. Specifically, the limiting member 7 is set as a plate structure. The limiting member 7 can be connected to the mounting base 51 by snap-fit ​​or other detachable means.

[0057] The unlock button 52 includes a head 521 and a connecting part 522 integrally formed with the head 521. The connecting part 522 is located in the placement groove 6 and below the limiting member 7. The lateral dimension of the connecting part 522 is larger than that of the head 521. The side of the connecting part 522 facing the limiting member 7 abuts against the limiting member 7. The end of the head 521 facing the connecting part 522 passes through the limiting member 7 and slides on the limiting member 7. At this time, due to the size limitation, the connecting part 522 is restricted by the limiting member 7 to be in the placement groove 6 and will not detach from the placement groove 6. The limiting member 7 can prevent the connecting part 522 from detaching from the placement groove 6, ensuring that the unlock button 52 will not accidentally detach from the mounting base 51. At the same time, it can also restrict the head 521 to slide only along its length direction on the limiting member 7, thereby accurately guiding the movement trajectory of the unlock button 52, preventing it from shaking or tilting, and ensuring the stability and accuracy of the unlocking action.

[0058] As one specific implementation method, refer to Figure 7 and 8 As shown, the head 521 includes a pressing part 5211 and a sliding part 5212. The sliding part 5212 is configured as a straight rod structure. The end of the sliding part 5212 facing the connecting part 522 is integrally formed with the connecting part 522. The sliding part 5212 passes through the limiting member 7 and can slide on the limiting member 7. The pressing part 5211 is located outside the placement groove 6 and is detachably connected to the end of the sliding part 5212 facing away from the connecting part 522. The unlock button 52 and the inclined surface 54 corresponding to the support leg are located on the side of the pressing part 5211.

[0059] During installation, first place the elastic element 53 into the placement groove 6, ensuring that the end of the elastic element 53 abuts against the bottom of the placement groove 6. Then, place the connecting part 522 and the sliding part 5212 together into the placement groove 6, ensuring that the end of the connecting part 522 facing away from the sliding part 5212 abuts against the other end of the elastic element 53. After placement, remove the limiting member 7 and move it downwards from the top of the placement groove 6. At this point, because the sliding part 5212 is designed as a straight rod structure, the sliding part 5212 can directly pass through the limiting member 7, and the limiting member 7 can move along the length of the sliding part 5212. Slide the slider into the placement slot 6 until the limiting member 7 is fully placed into the placement slot 6 and snapped onto the mounting base 51. After the limiting member 7 is installed, the pressing part 5211 is detachably connected to the end of the sliding part 5212 facing away from the connecting part 522. At this time, the whole installation can be achieved. The head 521 is set as the pressing part 5211 and the sliding part 5212, which facilitates installation. When the inclined surface 54 is worn due to frequent friction, only the pressing part 5211 needs to be replaced, without replacing the entire unlock button 52, which significantly reduces maintenance costs.

[0060] Furthermore, the pressing part 5211 is configured in an arc shape to accommodate pressing on the side facing away from the sliding part 5212. A locking block 13 is integrally formed on the side of the pressing part 5211 facing the sliding part 5212. A slot 12 is formed on the side of the sliding part 5212 corresponding to the locking block 13. The locking block 13 is inserted into the slot 12, thereby realizing the detachable connection between the pressing part 5211 and the sliding part 5212. In other embodiments, other detachable connection methods can also be used, which are not limited here.

[0061] As one specific implementation method, refer to Figure 8 As shown, a limiting groove 8 is provided on the side of the connecting part 522 facing away from the head 521. When the connecting part 522 is installed into the placement groove 6, the end of the elastic member 53 facing the connecting part 522 is located in the limiting groove 8 and fits against the inner wall of the limiting groove 8. The wall of the limiting groove 8 can form a circumferential constraint on the end of the elastic member 53, effectively preventing the elastic member 53 from radially shifting, twisting or bending during compression and rebound, ensuring that the elastic member 53 works stably in the circumferential direction, and maintaining the reliability and consistency of the reset action of the unlock button 52.

[0062] Furthermore, a guide rod 9 is provided on the connecting part 522 facing away from the head 521. The guide rod 9 and the connecting part 522 are integrally formed. The guide rod 9 extends along the sliding direction of the unlock button 52. The elastic element 53 is sleeved on the guide rod 9, and the elastic element 53 can be compressed or rebound along the length direction of the guide rod 9. One end of the guide rod 9 facing away from the connecting part 522 passes through the wall of the mounting seat 51 at the bottom of the placement groove 6, and can slide on the bottom wall of the mounting seat 51. The guide rod 9 can further limit the range of the elastic element 53, so that the elastic element 53 can only be stretched and contracted along the axial direction of the guide rod 9. Through the cooperation of the limiting groove 8 and the guide rod 9, the elastic element 53 is restricted between the inner wall of the limiting groove 8 and the outer wall of the guide rod 9, which completely eliminates the lateral displacement or shaking that may occur during the compression or rebound of the elastic element 53, and greatly improves the stability of the unlocking mechanism 5 when unlocking.

[0063] As another implementation method, refer to Figure 2 and 3 As shown, the support frame also includes a support rod 10, which is disposed between the support foot 3 and the main rod 1. One end of the support rod 10 is rotatably connected to the support foot 3, and the other end is rotatably connected to the mounting base 51. When the support foot 3 is extended, the support rod 10 is also extended laterally between the mounting base 51 and the support foot 3, thereby improving the stability of the support frame when it is supported. When the support foot 3 is retracted, the support rod 10 is also retracted onto the outer wall of the main rod 1 and covered by the support foot 3.

[0064] In this embodiment, the number of support rods 10 is also set to three, but it is not limited to only three. It can also be four, five or other numbers, as long as they correspond to the support feet 3.

[0065] As one specific implementation method, refer to Figure 4 , Figure 9 and Figure 10 As shown, the locking mechanism 4 includes a first magnetic 42 and a second magnetic 43. The first magnetic 42 and the second magnetic 43 are set as magnets that can attract each other. The first magnetic 42 is set on the support foot 3, specifically on the side wall of the support foot 3 facing the main rod 1. The second magnetic 43 is set on the support rod 10. When the support foot 3 is retracted, the first magnetic 42 and the second magnetic 43 are attracted and fixed. By setting the first magnetic 42 and the second magnetic 43, a contactless locking method can be achieved. The locking mechanism 4 has a simple and reliable structure. When unlocking, only a certain external force needs to be applied. The inclined surface 54 of the unlock button 52 presses the support foot 3 to overcome the magnetic attraction and unlock. It is responsive and has little wear, which greatly improves the life and ease of operation of the locking mechanism 4.

[0066] Furthermore, to facilitate the installation of the first magnetic component 42 and the second magnetic component 43, both the support foot 3 and the support rod 10 are provided with storage slots 41. The first magnetic component 42 and the second magnetic component 43 are placed and adhered in their respective storage slots 41. The storage slots 41 on the support foot 3 are located on the side wall facing the main rod 1 at the end of the support foot 3 away from the connecting seat 2. The storage slots 41 on the support rod 10 are located on the side wall near the mounting seat 51. When the support foot 3 is retracted, the storage slots 41 on the support rod 10 are... The storage slot 41 on the first magnetic component 42 and the storage slot 43 on the support foot 3 are aligned so that the first magnetic component 42 and the second magnetic component 43 can be attracted and fixed to each other. The storage slot 41 provides a stable installation position and protection position for the first magnetic component 42 and the second magnetic component 43, effectively preventing the first magnetic component 42 and the second magnetic component 43 from falling off or shifting during transportation or collision. At the same time, the storage slot 41 can also provide positioning for the installation of the first magnetic component 42 and the second magnetic component 43, making it convenient to install the first magnetic component 42 and the second magnetic component 43.

[0067] The first magnetic 42 and the second magnetic 43 are used to limit the support leg 3 when it is retracted. Compared with the existing buckle locking structure, this application can achieve the effect of "lifting the rod". That is, in the unfolded state, the user can directly lift the connecting seat 2 to make the support leg 3 completely retract to the locked state. If a buckle structure is used, after the support leg 3 is retracted to a certain extent, it is necessary to press the support leg 3 by hand or press the unlock button 52 to make the support leg 3 completely retract to the locked state. The magnetic design of this application can eliminate this operation. Simply by lifting the connecting seat 2, the support leg 3 and the support rod 10 can be brought closer to each other until the first magnetic 42 and the second magnetic 43 attract each other and the support leg 3 is locked.

[0068] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A support frame, characterized in that, include: Main rod (1); Connecting seat (2) is sleeved on the main rod (1); The support leg (3) is rotatably connected to the connecting seat (2) at one end and is a free end at the other end. The support leg (3) can be extended or retracted to the main rod (1). The locking mechanism (4) restricts the free end of the support leg (3) from moving away from the main rod (1) when the support leg (3) is retracted. The unlocking mechanism (5) includes a mounting base (51) and an unlocking button (52). The mounting base (51) is located at the end of the main rod (1), and the unlocking button (52) is located on the mounting base (51). The side of the unlocking button (52) is an inclined surface (54). When the support leg (3) is retracted, the inclined surface (54) of the unlock button (52) approaches the free end of the support leg (3); when the unlock button (52) is triggered, the unlock button (52) moves, causing the inclined surface (54) of the unlock button (52) to press against the free end of the support leg (3), and the free end of the support leg (3) moves away from the main rod (1), releasing the restriction of the locking mechanism (4).

2. The support frame as described in claim 1, characterized in that, It also includes an elastic element (53), which is disposed between the unlock button (52) and the mounting base (51); when the unlock button (52) moves toward the main rod (1) under the action of an external force, the elastic element (53) is compressed and generates a restoring force that causes the unlock button (52) to move away from the main rod (1).

3. The support frame as described in claim 2, characterized in that, The mounting base (51) has a placement groove (6) on the side of the mounting base (51) facing away from the main rod (1). The elastic element (53) is located in the placement groove (6) and one end abuts against the bottom of the placement groove (6). The unlocking button (52) extends into the placement groove (6) and abuts against the elastic element (53) at one end facing the placement groove (6).

4. The support frame as described in claim 3, characterized in that, A limiting member (7) is provided at the opening of the placement slot (6). The unlock button (52) includes a head (521) and a connecting part (522) connected to the head (521). The connecting part (522) is located in the placement slot (6) and abuts against the limiting member (7). One end of the head (521) and the connecting part (522) is connected through the limiting member (7) and slides on the limiting member (7).

5. The support frame as described in claim 4, characterized in that, The head (521) includes a pressing part (5211) and a sliding part (5212), wherein the sliding part (5212) passes through the limiting member (7) and slides on the limiting member (7), the connecting part (522) is disposed at the end of the sliding part (5212), the pressing part (5211) is located outside the placement groove (6) and is detachably connected to the end of the sliding part (5212) facing away from the connecting part (522), and the inclined surface (54) is disposed on the side of the pressing part (5211).

6. The support frame as described in claim 4, characterized in that, The connecting part (522) has a limiting groove (8) on the side opposite to the head (521), and one end of the elastic member (53) is located in the limiting groove (8) and fits against the inner wall of the limiting groove (8).

7. The support frame as described in claim 4, characterized in that, A guide rod (9) is provided on the connecting part (522) facing away from the head (521). The elastic element (53) is sleeved on the guide rod (9) and can slide on the guide rod (9). One end of the guide rod (9) facing away from the connecting part (522) passes through the wall of the mounting seat (51) at the bottom of the placement groove (6).

8. The support frame as described in any one of claims 1-7, characterized in that, It also includes a support rod (10), one end of which is rotatably connected to the support foot (3), and the other end is rotatably connected to the mounting base (51).

9. The support frame as described in claim 8, characterized in that, The locking mechanism (4) includes: The first magnetic suction element (42) is disposed on the support foot (3); The second magnetic chuck (43) is disposed on the support rod (10). When the support foot (3) is retracted, the first magnetic chuck (42) and the second magnetic chuck (43) are attracted and fixed.

10. The support frame as described in claim 9, characterized in that, Both the support foot (3) and the support rod (10) are provided with storage slots (41), and the first magnetic suction member (42) and the second magnetic suction member (43) are respectively set in the corresponding storage slots (41).

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