Support frame

Abstract

The utility model relates to a bracing frame, including base, foot stand main part, unlocking piece and reset piece, the edge of base is equipped with first spacing groove and second spacing groove that are spaced, foot stand main part is connected to base and includes main leg and slave leg, main leg has the relative rotation end and support end, the rotation end is rotatingly connected to base through the rotation shaft, and the support end is rotatingly connected to the base through the rotation shaft. The supporting end is supported on the supporting face. The unlocking piece is movably connected to the rotating end and comprises an operation end and a limiting end which are connected, and the limiting end can abut against the first limiting groove or the second limiting groove to limit rotation of the rotating end. When the limiting end abuts against the second limiting groove, the corresponding included angle between the main supporting leg and the auxiliary supporting leg is larger than the corresponding included angle between the main supporting leg and the auxiliary supporting leg when the limiting end abuts against the first limiting groove, and the reset part provides reset force to drive the limiting part to automatically move to the first limiting groove or the second limiting groove. According to the supporting frame, different unfolding angles of the foot stool body can be changed through one-key pressing, so that the supporting height is adjusted, and operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to photographic equipment technical field, especially a support frame. BACKGROUND

[0002] Generally, the skill shooting in daily life cannot do without the help of support frame, the role of support frame cannot be ignored for professional users or amateur users, and its main role is to stabilize the camera. The existing support frame cannot maintain a certain fixed angle range of unfolding angle or maintain a certain specific unfolding angle, which will cause the angle of the support frame required for shooting to change greatly when the user uses the support frame, resulting in poor shooting effect. SUMMARY

[0003] The utility model provides a support frame to solve the technical problem that the existing support frame cannot satisfy the angle of the support frame required for shooting to change greatly, resulting in poor shooting effect.

[0004] The utility model discloses a support frame, which comprises:

[0005] A base is used for installing a shooting device, and a first limiting groove and a second limiting groove are arranged at the edge of the base in a spaced manner.

[0006] A foot stand body is connected to the base, and the foot stand body comprises a main supporting leg and a slave supporting leg.

[0007] An unlocking piece is movably connected to the rotating end, and the unlocking piece comprises a connecting operation end and a limiting end. The main supporting leg can rotate relative to the base around the rotating shaft to switch the foot stand body between a first state and a second state. The limiting end abuts against the first limiting groove in the first state. The limiting end abuts against the second limiting groove in the second state. The included angle between the main supporting leg and the slave supporting leg in the second state is greater than that in the first state.

[0008] A reset piece is connected between the unlocking piece and the rotating end, and the reset piece can provide a reset force to automatically move the limiting end to the first limiting groove or the second limiting groove.

[0009] In one of the embodiments, the first limiting groove is a first arc track surrounding the rotating shaft, the first arc track has a stop wall at each end, in the first state, the rotating end can rotate relative to the base so that the limiting end can move between the two ends of the first arc track, when the limiting end abuts against the stop wall at the first end of the first arc track, the slave leg and the main leg are in a side-by-side closing posture, when the limiting end abuts against the stop wall at the second end of the first arc track, the slave leg and the main leg are in an angle opening posture.

[0010] In one of the embodiments, the second limiting groove is a second arc track surrounding the rotating shaft, the second arc track has a stop wall at each end, in the second state, the rotating end can rotate relative to the base so that the limiting end can move between the two ends of the second arc track, when the limiting end moves to abut against the stop wall at the second end of the second arc track, the main leg and the slave leg can be in a maximum angle opening posture.

[0011] In one of the embodiments, the stop wall at the first end of the second arc track is an inclined surface inclined to the length extension direction of the limiting end, rotating the rotating end, the inclined surface can guide the limiting end to move into the first limiting groove.

[0012] In one of the embodiments, the rotating end is provided with a slide track parallel to the rotating shaft, the limiting end is provided with a clamping block extending perpendicularly to the extension direction of the slide track, the first limiting groove and the second limiting groove are arranged at the side edge of the base facing the rotating end, the clamping block is hung on the groove bottom wall of the first limiting groove or the second limiting groove.

[0013] In one of the embodiments, the outer side wall of the rotating end is inwardly recessed along the axial direction of the rotating shaft to form a mounting groove, the inner wall of the mounting groove includes a side wall surface and a bottom wall surface perpendicular to each other, the side wall surface surrounds the rotating shaft, and the bottom wall surface connects the side wall surface and is penetrated by the rotating shaft; during the rotation of the rotating end relative to the base around the rotating shaft, the edge side peripheral wall of the base is always attached to the side wall surface, the bottom wall surface is opposite to the first limiting groove, and part of the base is located in the mounting groove; the side wall surface and the bottom wall surface are provided with a communication avoiding gap at the connection position, and the clamping block abuts against the first limiting groove or the second limiting groove after extending out of the avoiding gap.

[0014] In one of the embodiments, the foot stand body comprises a limiting cylinder having a limiting cavity and a notch slot in communication with the limiting cavity, the rotating end is provided with a containing cavity, the limiting cylinder is located in the containing cavity and connected to the outlet position of the slide, and the limiting cavity and the notch slot are both in communication with the slide; the reset member comprises an extension spring, the extension spring is located in the limiting cavity and extends along the length direction of the slide, and the opposite ends of the extension spring are respectively connected to the clamping block and the limiting cylinder, the notch slot is in communication with the avoiding notch in a position, and the clamping block abuts against the first limiting slot or the second limiting slot after sequentially penetrating the notch slot and the avoiding notch, and the clamping block slides along the axial direction of the rotating shaft in the notch slot and the avoiding notch.

[0015] In one of the embodiments, the limiting cylinder is detachably installed at the outlet position of the slide through a screw, the radial dimension of the limiting end is greater than the radial dimension of the slide, and the limiting end is hung on the inner side wall of the containing cavity at the outlet position of the slide.

[0016] In one of the embodiments, the base comprises a pair of opposite lugs, and the two lugs are connected on one side to form a U-shaped clamping groove, and the rotating end is located in the U-shaped clamping groove and rotates around the rotating shaft in the U-shaped clamping groove.

[0017] In one of the embodiments, the number of the slave legs is two, and the two slave legs are respectively rotatably connected to the opposite sides of the base or the rotating end, and in the first state, the two slave legs can be accommodated side by side on the same side of the main leg.

[0018] From the above technical solution, it can be known that the embodiments of the utility model have at least the following advantages and positive effects:

[0019] The embodiments of the utility model provide a support frame, at least two spaced limiting slots (a first limiting slot and a second limiting slot) are arranged at the edge of the base, so that the support frame body can be unfolded and stopped at different angles or angle ranges (a first state and a second state) to adjust the support height of the support frame. On the other hand, the user can control the relative rotation and relative limiting of the main leg and the base through one-key operation of the unlocking member, so as to change the included angle between the main leg and the slave leg, that is, change the switching of the unfolding angle or angle range of the foot stand body, so that the support frame can have a large change in the angle during supporting the shooting process, thereby obtaining a better shooting effect. The support frame of the application is flexible to adjust, convenient to operate, has strong practicability, and can meet more shooting needs of the user. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0021] Figure 1 It is an overall structural schematic diagram of the support frame of an embodiment of the present application.

[0022] Figure 2 It is an overall structural schematic diagram of the support frame of an embodiment of the present application. Figure 1 It is an expanded structure schematic diagram of the support frame in which the foot frame body is in the first state.

[0023] Figure 3 It is an expanded structure schematic diagram of the support frame in which the foot frame body is in the first state. Figure 1 It is an expanded structure schematic diagram of the support frame in which the foot frame body is in the second state.

[0024] Figure 4 It is a cross-sectional structural schematic diagram along the A-A direction in the figure. Figure 1

[0025] Figure 5 It is a cross-sectional structural schematic diagram along the B-B direction in the figure. Figure 2

[0026] Figure 6 It is a cross-sectional structural schematic diagram along the C-C direction in the figure. Figure 3

[0027] Figure 7 It is a partial exploded structural schematic diagram of the support frame. Figure 1

[0028] Figure 8 It is another perspective view of the exploded view. Figure 7

[0029] It is a cross-sectional structural schematic diagram along the D-D direction in the figure. Figure 9 Figure 1

[0030] The following is the explanation of the reference signs:

[0031] ​​​​​​10, support frame; 100, base; 110, first limiting groove; 111, first arc rail; 120, second limiting groove; 121, second arc rail; 122, slope; 130, lug; 140, U-shaped clamping groove; 200, foot stand main body; 210, main supporting leg; 211, rotating end; 212, supporting end; 213, sliding channel; 214, accommodating cavity; 220, from supporting leg; 230, rotating shaft; 240, mounting groove; 241, side wall surface; 242, bottom wall surface; 243, avoiding gap; 250, limiting cylinder; 251, limiting cavity; 252, gap groove; 300, unlocking piece; 310, operation end; 320, limiting end; 330, clamping block; 400, reset piece; 410, telescopic spring. DETAILED DESCRIPTION

[0032] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different embodiments, none of which deviates from the scope of the present application, and the description and drawings in the essence are used as a description, not to limit the present application.

[0033] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Combination reference Figures 1-3This application provides a novel support frame 10 for supporting and stabilizing shooting equipment, and allowing for flexible adjustment of its orientation to provide users with flexible shooting angles. The support frame 10 includes a connected base 100 and a tripod body 200. The base 100 is used to directly or indirectly mount the shooting equipment, and the tripod body 200 is used to support the shooting equipment on a support surface. Specifically, the base 100 has a first limiting groove 110 and a second limiting groove 120 spaced apart at its edge. The tripod body 200 includes a main support leg 210 and a secondary support leg 220. The main support leg 210 has a rotating end 211 and a supporting end 212 that are axially opposite to each other. The rotating end 211 is rotatably connected to the base 100 via a rotating shaft 230. The main support leg 210 rotates relative to the base 100 around the rotating shaft 230, and the supporting end 212 is supported on the support surface. One end of the secondary leg 220 is connected to the base 100 or the main leg 210, and the angle between the main leg 210 and the secondary leg 220 increases or decreases synchronously as the main leg 210 rotates, thereby changing the support height of the tripod body 200.

[0036] Furthermore, in conjunction with references Figures 3-7 The support frame 10 includes an unlocking component 300, which is movably connected to the rotating end 211. The unlocking component 300 includes a connected operating end 310 and a limiting end 320. Figure 7 As shown), the operating end 310 is exposed on the outer wall of the rotating end 211 for user operation. Figure 3 As shown, the limiting end 320 abuts against the first limiting groove 110 or the second limiting groove 120 to restrict the rotation of the rotating end 211. The main support leg 210 can rotate about the pivot 230 relative to the base 100, so that the leg body 200 switches between the first state and the second state. Figure 4 or Figure 5 This illustrates the tripod body 200 in its first state, with the limiting end 320 abutting against the first limiting groove 110; Figure 6 This illustrates the second state of the tripod body 200, with the limiting end 320 abutting against the second limiting groove 120. (Combined) Figures 1-3 Second state ( Figure 3 As shown, the angle between the main support leg 210 and the secondary support leg 220 is greater than that in the first state ( Figure 1 The angle between the main support leg 210 and the secondary support leg 220 (as shown in Figure 2) is greater in the second state, meaning the opening angle of the tripod body 200 is larger.

[0037] Furthermore, in this application, in conjunction with reference to Figures 7-9The support frame 10 comprises a reset member 400 connected between the unlocking member 300 and the rotating end 211. The reset force provided by the reset member 400 drives the limiting end 320 to automatically move into the first limiting groove 110 or the second limiting groove 120, so as to limit the relative rotation between the main leg 210 and the base 100. The corresponding operation end 310 of the embodiment is unlocked when being pressed, so that the rotating end 211 can be switched between the first state and the second state. When the pressing is released, the operation end 310 is automatically reset. It should be noted that, in addition to the pressing manner in the embodiment, the operation end 310 of other embodiments can also be unlocked in other manners, and the operation manner is not limited in the application. The operation end 310 can also be unlocked in a sliding manner, for example, the inner side wall surface of the operation end 310 is an inclined surface, the operation end 320 is arranged to be longitudinally slidable, and when the limiting end 320 contacts different inner side surface positions of the operation end 310, the limiting end 320 can enter the first limiting groove 110 or the second limiting groove 120 by the reset force of the reset member 400.

[0038] The support frame 10 provided in the application is provided with at least two spaced limiting grooves (the first limiting groove 110 and the second limiting groove 120) at the edge of the base 100, so that the frame body 200 can be unfolded and stopped at different angles or angle ranges (the first state and the second state) to adjust the support height of the support frame 10. On the other hand, the user can control the relative rotation and relative limiting of the main leg 210 and the base 100 by unlocking the unlocking member 300 by one-key operation, so as to change the included angle between the main leg 210 and the auxiliary leg 220, that is, change the switching of the unfolding angle or angle range of the frame body 200, so that the support frame 10 can have a large change in the angle during supporting the shooting process, thereby obtaining a better shooting effect. The support frame 10 of the application has strong practicability, can be flexibly adjusted and conveniently operated, and can meet more shooting needs of the user.

[0039] Preferably, in combination with reference to Figure 4 and Figure 5 In an embodiment, the first limiting groove 110 is a first arc track 111 surrounding the rotating shaft 230, and the first arc track 111 has a blocking wall at the head and tail thereof. When the frame body 200 is in the first state, the rotating end 211 is rotated relative to the base 100, so that the limiting end 320 can move between the head and tail of the first arc track 111. Figure 4 It is shown that, when the limiting end 320 abuts against the head blocking wall of the first arc track 111, in combination with Figure 1 , the main leg 210 and the auxiliary leg 220 are in a side-by-side closing posture, and the user can hold the frame body 200 to use the entire support frame 10 as a selfie stick. Figure 5 It is shown that, when the limiting end 320 abuts against the tail blocking wall of the first arc track 111, in combination withFigure 2 The main leg 210 and the slave leg 220 are in an angle state to support the support surface. It should be noted that the first limiting slot 110 increases the opening angle range of the foot stand main body 200 in the first state, and in other embodiments, the limiting end 320 can be embedded in the first limiting slot 110 to stabilize the opening angle state or the folding state of the foot stand main body. Therefore, in the present application, the specific structure of the first limiting slot 110 is not limited, as long as it can accommodate the limiting end 320.

[0040] Preferably, in combination with reference to Figure 3 and Figure 6 In an embodiment, the second limiting slot 120 is a second arc track 121 surrounding the rotation shaft 230, and the first end and the second end of the second arc track 121 have a blocking wall. When the foot stand main body 200 is in the second state, the rotating end 211 can rotate relative to the base 100, so that the limiting end 320 can move between the first end and the second end of the second arc track 121. Figure 6 It is illustrated that when the limiting end 320 moves to abut against the end blocking wall of the second arc track 121, in combination with Figure 3 The main leg 210 and the slave leg 220 can be in a maximum angle opening state, and at this time, the support height of the support frame 10 is the lowest. It should be noted that, like the first limiting slot 110, in the present application, the specific structure of the second limiting slot 120 is not limited, as long as it can accommodate the limiting end 320.

[0041] Preferably, in combination with reference to Figure 6 and Figure 7 In an embodiment, the first end blocking wall of the second arc track 121 is an inclined surface 122 inclined to the length extension direction of the limiting end 320. When the rotating end 211 is rotated, the limiting end 320 moves along the second arc track 121 and the inclined surface 122 in sequence. The inclined surface 122 can guide the limiting end 320 to move from the second limiting slot 120 to the first limiting slot 110, so that the user can switch the foot stand main body 200 from the second state to the first state without operating the unlocking part 300, and quickly complete the folding of the support frame 10. It should be noted that in other embodiments, the inclined surface 122 is not provided, and the user can also complete the folding of the support frame 10 by operating the unlocking part 300. Therefore, in the present application, whether the inclined surface 122 is provided or not is not limited.

[0042] Preferably, in combination with reference to Figures 7-9In an embodiment, the rotating end 211 is provided with a slide 213 parallel to the rotating shaft 230, the limiting end 320 is provided with a clamping block 330 extending perpendicularly to the extending direction of the slide 213, the first limiting slot 110 and the second limiting slot 120 are arranged on a side edge of the base 100 facing the rotating end 211, and the clamping block 330 is hung on the bottom wall of the first limiting slot 110 or the second limiting slot 120. It should be noted that the clamping block 330 is a specific structure for achieving the limiting clamping of the limiting end 320, and according to the arrangement position of the first limiting slot 110 and the second limiting slot 120, the limiting structure of the limiting end 320 will also be changed accordingly, so in the present application, the extending direction and shape of the clamping block 330 are not limited. In addition, the clamping block 330 hung on the bottom wall of the first limiting slot 110 or the second limiting slot 120 plays a role of preventing the unlocking piece 300 from being detached.

[0043] Preferably, in combination with reference to Figure 8 and Figure 9 In an embodiment, the outer side wall of the rotating end 211 is inwardly recessed along the axial direction of the rotating shaft 230 to form a mounting slot 240, the inner wall of the mounting slot 240 includes a side wall surface 241 and a bottom wall surface 242 which are perpendicular to each other, the side wall surface 241 surrounds the rotating shaft 230, and the bottom wall surface 242 is connected to the side wall surface 241 and is penetrated by the rotating shaft 230. During the rotation of the rotating end 211 around the rotating shaft 230 relative to the base 100, the side peripheral wall of the base 100 is always attached to the side wall surface 241, so as to enhance the rotation stability between the rotating end 211 and the base 100 and prevent the dislocation of the two during the rotation. The first limiting slot 110 and the second limiting slot 120 are both opposite to the bottom wall surface 242, and part of the base 100 is positioned in the mounting slot 240, so as to enhance the assembly stability and compactness between the rotating end 211 and the base 100. The connecting position between the side wall surface 241 and the bottom wall surface 242 is provided with a avoiding gap 243 which is communicated with the slide 213, and the clamping block 330 abuts against the first limiting slot 110 or the second limiting slot 120 after extending out of the avoiding gap 243. It should be noted that, without considering the assembly stability and compactness between the rotating end 211 and the base 100, in the present application, whether the mounting slot 240 is arranged or not is not limited. In addition, without considering the rotation stability between the rotating end 211 and the base 100, in the present application, whether the side peripheral wall of the base 100 is attached to the side wall surface 241 or not is not limited, and the shape of the side wall surface 241 is not limited. Only the rotating end 211 is rotatably connected to the base 100 is required.

[0044] Preferably, in combination with reference to Figure 8 and Figure 9In an embodiment, the foot stand body 200 comprises a limiting cylinder 250 having a limiting cavity 251 and a gap groove 252 in communication with the limiting cavity 251. The rotating end 211 is provided with a receiving cavity 214 in communication with a sliding channel 213, and the limiting cylinder 250 is located in the receiving cavity 214 and connected to the outlet position of the sliding channel 213, and the limiting cavity 251 and the gap groove 252 are both in communication with the sliding channel 213. The reset member 400 comprises a telescopic spring 410 located in the limiting cavity 251 and telescopic along the length direction of the sliding channel 213, and the opposite ends of the telescopic spring 410 are respectively connected to the clamping block 330 and the inner side wall of the limiting cylinder 250. In addition, the gap groove 252 is in communication with the avoiding gap 243 in alignment, and the clamping block 330 abuts against the first limiting groove 110 or the second limiting groove 120 after sequentially penetrating the gap groove 252 and the avoiding gap 243, and the clamping block 330 can move along the axial direction of the rotating shaft 230 in the gap groove 252 and the avoiding gap 243. It should be noted that, in the present application, the reset member 400 comprises but is not limited to the telescopic spring 410, elastic rubber or a pair of repulsive magnets.

[0045] Preferably, in combination with reference to FIGS. 1-3, Figure 8 and Figure 9 In an embodiment, the limiting cylinder 250 is detachably installed at the outlet position of the sliding channel 213, and the radial dimension of the limiting end 320 is greater than the radial dimension of the sliding channel 213, and the limiting end 320 is hung on the inner side wall of the receiving cavity 214 at the outlet position of the sliding channel 213 to prevent the unlocking member 300 from sliding away from the rotating end 211. Here, after the operation end 310 of the unlocking member 300 extends out of the receiving cavity 214 and the sliding channel 213, the limiting cylinder 250 limits the connection of the telescopic spring 410 to the limiting end 320, and the design of the limiting cylinder 250 facilitates the assembly of the unlocking member 300 and the reset member 400. It should be noted that, without considering the anti-dropping property of the unlocking member 300, under the premise of convenient assembly of the unlocking member 300 or the reset member 400, in the present application, whether the limiting cylinder 250 is provided or not, whether the limiting cylinder 250 is detachable or not, and whether the relative radial dimension of the limiting end 320 is limited or not.

[0046] Preferably, in combination with reference to FIGS. 1-3, Figure 7 and Figure 8 In an embodiment, the base 100 comprises a pair of opposite lugs 130 spaced along the axial direction of the rotating shaft 230, and the two lugs 130 are connected to form a U-shaped clamping groove 140 on one side, and the rotating end 211 is limited in the U-shaped clamping groove 140 and rotates around the rotating shaft 230 in the U-shaped clamping groove 140. It should be noted that the U-shaped clamping groove 140 further enhances the assembly stability and compactness of the entire support frame 10, and in the present application, whether the lugs 130 and the U-shaped clamping groove 140 are provided or not is not limited.

[0047] Preferably, in combination with reference to FIGS. 1-3, Figure 1 andFigure 2 In one embodiment, the number of legs 220 is two, and each is rotatably connected to the base 100. Figure 2 (as shown) or the opposite sides of the rotating end 211 (not shown), when the tripod body 200 is in the first state, Figure 1 The illustration shows two secondary support legs 220 that can be stored side-by-side on the same side of the main support leg 210 to increase the compactness of the entire support frame 10 in its folded state. Here, the secondary support legs 220 can be manually extended at a certain angle relative to the base 100, while the main support leg 210 rotates relative to the base 100 to further extend the tripod body 200. Alternatively, the user can simply reverse the movement of the secondary support legs 220 to fold the entire tripod body 200 into its folded state. It should be noted that in this application, the number and connection position of the secondary support legs 220 are not limited, as long as the angle between the main support leg 210 and the secondary support leg 220 can change with the rotation of the main support leg 210, thereby adjusting the support height of the support frame 10.

[0048] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A support frame, characterized by, The utility model provides a tripod, comprising: a base for mounting a photographic device, the base being provided with spaced first and second limit grooves at the edge thereof; a tripod body connected to the base, the tripod body comprising a main leg and a slave leg, the main leg having a rotating end and a supporting end axially opposite to each other, the rotating end being rotatably connected to the base via a rotating shaft, the supporting end being supported on a supporting surface; an unlocking member movably connected to the rotating end, the unlocking member comprising a connecting operation end and a limiting end, the operation end being exposed to the rotating end for user operation, the limiting end abutting against the first or second limit groove to limit the rotation of the rotating end; the main leg being capable of rotating relative to the base about the rotating shaft to switch the tripod body between a first state and a second state, in the first state, the limiting end abutting against the first limit groove; in the second state, the limiting end abutting against the second limit groove; the second state corresponding to a larger included angle between the main leg and the slave leg than the first state; a reset member connected between the unlocking member and the rotating end, the reset member being capable of providing a reset force to drive the limiting end to automatically move to the first or second limit groove.

2. The support frame of claim 1, wherein The first limit groove is a first arc track surrounding the rotating shaft, the first arc track having a blocking wall at the beginning and end thereof, in the first state, the rotating end being capable of rotating relative to the base to enable the limiting end to move between the beginning and end of the first arc track; when the limiting end abuts against the beginning blocking wall of the first arc track, the slave leg and the main leg are in a side-by-side converging posture, when the limiting end abuts against the end blocking wall of the first arc track, the slave leg and the main leg are in an included angle posture.

3. The support frame of claim 1, wherein, The second limit groove is a second arc track surrounding the rotating shaft, the second arc track having a blocking wall at the beginning and end thereof, in the second state, the rotating end being capable of rotating relative to the base to enable the limiting end to move between the beginning and end of the second arc track, when the limiting end moves to abut against the end blocking wall of the second arc track, the main leg and the slave leg are capable of being in a maximum angle opening and closing posture.

4. The support frame of claim 3, wherein, The beginning blocking wall of the second arc track is a slope inclined to the axial direction of the rotating shaft, rotating the rotating end, the slope being capable of guiding the limiting end to move into the first limit groove.

5. The support frame of claim 1, wherein, The rotating end is provided with a slide track parallel to the rotating shaft, the limiting end being provided with a clamping block extending perpendicularly to the extending direction of the slide track, the first and second limit grooves being provided on the side edge of the base facing the rotating end, the clamping block being hung on the groove bottom wall of the first or second limit groove.

6. The support frame of claim 5, wherein, The outer side wall of the rotating end is inwardly recessed along the axial direction of the rotating shaft to form a mounting groove, the inner wall of the mounting groove comprises a side wall surface and a bottom wall surface which are perpendicular to each other, the side wall surface surrounds the rotating shaft, and the bottom wall surface is connected to the side wall surface and is penetrated by the rotating shaft; during rotation of the rotating end relative to the base around the rotating shaft, the edge side wall of the base is always attached to the side wall surface, the bottom wall surface is opposite to the first limiting groove, and part of the base is located in the mounting groove; the side wall surface is provided with an avoiding gap which is in communication with the sliding channel at the connection position of the side wall surface and the bottom wall surface, and the clamping block is abutted against the first limiting groove or the second limiting groove after extending out of the avoiding gap.

7. The support frame of claim 5, wherein, The foot stand body comprises a limiting cylinder, the limiting cylinder has a limiting cavity and a gap groove which is in communication with the limiting cavity, the rotating end is provided with a containing cavity, the limiting cylinder is located in the containing cavity and is connected to the outlet position of the sliding channel, and the limiting cavity and the gap groove are both in communication with the sliding channel; the reset member comprises an extension spring, the extension spring is located in the limiting cavity and is extended and retracted along the length direction of the sliding channel, opposite ends of the extension spring are connected to the clamping block and the limiting cylinder respectively, the gap groove is in communication with the avoiding gap in a position opposite to each other, and the clamping block is abutted against the first limiting groove or the second limiting groove after sequentially penetrating through the gap groove and the avoiding gap, and the clamping block is slidably moved in the axial direction of the rotating shaft in the gap groove and the avoiding gap.

8. The support frame of claim 7, wherein, The limiting cylinder is detachably installed at the outlet position of the sliding channel through a screw, the radial dimension of the limiting end is greater than the radial dimension of the sliding channel, and the limiting end is hung on the inner side wall of the containing cavity at the outlet position of the sliding channel.

9. The support frame of claim 1, wherein, The base comprises a pair of opposite lugs which are spaced apart from each other, a U-shaped clamping groove is formed by connecting one side of the two lugs, the rotating end is limited in the U-shaped clamping groove, and the rotating end rotates around the rotating shaft in the U-shaped clamping groove.

10. The support frame of claim 1, wherein, The number of the slave legs is two, and each of the slave legs is rotationally connected to opposite sides of the base or the rotating end, and in the first state, the two slave legs can be accommodated side by side on the same side of the main leg.

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