CN111279547B

CN111279547B - Antenna support, antenna module and movable platform

Info

Publication number: CN111279547B
Application number: CN201980004968.2A
Authority: CN
Inventors: 高诗经
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2019-01-21
Filing date: 2019-01-21
Publication date: 2021-12-28
Anticipated expiration: 2039-01-21
Also published as: WO2020150859A1; CN111279547A

Abstract

An antenna boom, antenna module and movable platform, wherein, the antenna boom includes: a base for connecting to a movable platform; the bracket part is used for connecting the antenna, is rotatably connected with the base and can be folded or unfolded relative to the base; one of the base and the support part is provided with a knob lock catch, the other one of the base and the support part is provided with a lock hole, and the knob lock catch can penetrate through the lock hole and can rotate relative to the lock hole; when the knob lock catch rotates to a first position relative to the lock hole, the support part and the base are locked to enable the support part to be unfolded, and when the knob lock catch rotates to a second position relative to the lock hole, the support part and the base are unlocked to enable the support part to be folded.

Description

Antenna support, antenna module and movable platform

Technical Field

The application relates to the field of antennas, in particular to an antenna bracket, an antenna assembly and a movable platform.

Background

The requirement of current unmanned aerial vehicle machine-mounted antenna is high with the antenna branch, and the distance between two antennas is also great, can produce great influence to the less unmanned aerial vehicle of volume, specifically embodies, and the volume of support is great, can bring great negative effects to accomodating and transporting of complete machine, seriously influences unmanned aerial vehicle's portability.

In view of the technical problem, the prior art proposes the concept of a foldable support, but the foldable support has high requirements on the aspects of operation convenience, support stability, service life, assembly quality of the support during unfolding and the like, and how to realize the aspects is a design difficulty of the product.

Disclosure of Invention

Accordingly, there is a need for an antenna mounting that solves at least one of the above-mentioned problems.

An antenna mount for connecting an antenna to a movable platform, wherein the antenna mount comprises: a base for connecting to the movable platform; the bracket part is used for connecting the antenna, is rotatably connected with the base and can be folded or unfolded relative to the base; one of the base and the support part is provided with a knob lock catch, the other one of the base and the support part is provided with a lock hole, and the knob lock catch can penetrate through the lock hole and can rotate relative to the lock hole; when the knob lock catch rotates to a first position relative to the lock hole, the support part and the base are locked to enable the support part to be unfolded, and when the knob lock catch rotates to a second position relative to the lock hole, the support part and the base are unlocked to enable the support part to be folded.

An antenna assembly, comprising: an antenna; in the antenna stand according to any one of the above technical solutions, the antenna is mounted on the stand portion of the antenna stand.

A movable platform, comprising: a movable platform body; in the antenna assembly according to any one of the above technical solutions, a base of an antenna bracket of the antenna assembly is mounted to the movable platform body.

Compared with the prior art, the method has the following beneficial technical effects: the antenna support provided by the application can rotate between the support part and the base to realize that the support part can be unfolded to support the antenna and can also be folded to be conveniently stored, and the knob lock catch and the lock hole are arranged between the support part and the base, and the knob lock catch is clamped with the lock hole at the first position to ensure that the support part and the base can be firmly locked after being unfolded, thereby ensuring that the antenna is stably and reliably supported. The whole rotary operation stroke of this structure is also shorter, need not the user and carries out many times of rotary operation, and the quick detach advantage is more obvious, uses and experiences also better, and also the user of being more convenient for puts in place the judgement to the knob hasp, reduces rotatory assembly defect risk not in place, makes the product have more reliability and security.

Additional aspects and advantages of the present application will be set forth in part in the description which follows, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an antenna assembly according to one embodiment of the present application in a first state;

FIG. 2 is a schematic structural diagram of an antenna assembly of one embodiment of the present application in a second state;

FIG. 3 is a schematic diagram of a top view of the antenna assembly shown in FIG. 2;

FIG. 4 is an enlarged, fragmentary structural schematic view of the antenna assembly shown in FIG. 3;

FIG. 5 is a schematic structural diagram of an antenna assembly of one embodiment of the present application in a third state;

FIG. 6 is an enlarged, fragmentary structural schematic view of the antenna assembly shown in FIG. 5;

FIG. 7 is an exploded view of a portion of an antenna assembly according to one embodiment of the present application;

FIG. 8 is an exploded view of a portion of an antenna assembly according to one embodiment of the present application;

FIG. 9 is an exploded view of a portion of an antenna assembly according to one embodiment of the present application;

FIG. 10 is an enlarged schematic view of portion A shown in FIG. 9;

fig. 11 is a schematic view of the antenna assembly shown in fig. 1 from another perspective.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 11 is:

100 base, 110 first hinge, 120 knob lock, 121 central body, 122 rotating lug, 1221 bottom plate, 1222 lug part, 1223 anti-slip rib, 130 hinge shaft, 131 connecting shaft, 140 blocking part, 200 support part, 210 second hinge, 211 hinge body 220 lock hole, 231 first rotating direction mark, 232 locking indication pattern mark, 241 second rotating direction mark, 242 unlocking indication pattern mark, 251 hinge part, 2511 first hinge part, 2512 second hinge part, 252 auxiliary support rib, 253 support arm, 310 fixture block, 311 convex arc surface, 312 protrusion, 320 bayonet, 321 opening, 322 blocking wall, 410 blocking plate, 420 block, 500 central connecting piece, 600 antenna, 700 floor stand.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

Antenna mounts, antenna assemblies, and movable platforms according to some embodiments of the present application are described below with reference to fig. 1-11.

As shown in fig. 1 to 11, embodiments of the first aspect of the present application provide an antenna mount for connecting an antenna 600 and a movable platform. Specifically, the antenna stand includes a base 100 for connecting a movable platform and a stand portion 200 for connecting an antenna 600, and the stand portion 200 is rotatably connected with the base 100 such that the stand portion 200 can be folded or unfolded with respect to the base 100. One of the base 100 and the bracket portion 200 is provided with a knob lock 120, the other is provided with a lock hole 220, the knob lock 120 can pass through the lock hole 220 and can rotate relative to the lock hole 220, when the knob lock 120 rotates to a first position relative to the lock hole 220, the bracket portion 200 is locked with the base 100 to enable the bracket portion 200 to be unfolded, and when the knob lock 120 rotates to a second position relative to the lock hole 220, the bracket portion 200 is unlocked with the base 100 to enable the bracket portion 200 to be folded.

More specifically, as shown in fig. 1 and 2, the knob lock 120 is in a second position relative to the lock hole 220, the knob lock 120 is configured to correspond to the lock hole 220, the knob lock 120 can pass through the lock hole 220, and accordingly, the stand portion 200 and the base 100 are in an unlocked state, so that the stand portion 200 can rotate freely relative to the base 100. Specifically, for example, as shown in fig. 1, a schematic structural diagram of the support portion 200 at a folding position relative to the base 100 is shown, at this time, the support portion 200 and the base 100 are folded in half to facilitate product storage, specifically, for example, as shown in fig. 2, a schematic structural diagram of the support portion 200 at an unfolding position relative to the base 100 is shown, at this time, the support portion 200 and the base 100 are unfolded to meet a requirement of a support height of the antenna 600.

As shown in fig. 3 and 5, the stand portion 200 is a schematic top view of the base 100 in the extended position. As shown in fig. 3 and 4, the structure of the knob lock 120 is schematically illustrated when the knob lock 120 is located at a second position relative to the lock hole 220, and at this time, the knob lock 120 can pass through the lock hole 220, and accordingly, the stand portion 200 and the base 100 are in an unlocked state. As shown in fig. 5 and 6, which are schematic structural diagrams when the knob lock 120 is located at a first position relative to the lock hole 220, at this time, the knob lock 120 is engaged with the lock hole 220, so that the degree of freedom of relative rotation between the bracket portion 200 and the base 100 is limited, and accordingly, the bracket portion 200 and the base 100 are located in a locked state, and at this time, the bracket portion 200 and the base 100 are reliably and stably maintained in an unfolded state, which can meet requirements for supporting height, supporting stability and supporting reliability of the antenna 600.

The antenna stand that the above-mentioned embodiment of this application provided both can expand in order to support antenna 600, also can fold and conveniently accomodate. And the knob lock catch 120 and the lock hole 220 are arranged between the bracket part 200 and the base 100, and the knob lock catch 120 is clamped with the lock hole 220 at the first position, so that the bracket part 200 and the base 100 can be firmly locked after being unfolded, and the antenna 600 can be stably and reliably supported. In addition, in the structure, the knob lock catch 120 is controlled to be unlocked or locked with the lock hole 220 in a manner of rotating between the first position and the second position relative to the lock hole 220, so that the assembly damage between the knob lock catch 120 and the lock hole 220 is basically avoided, the service life of a product is further prolonged, and a user only needs to perform an operation of unlocking or locking by driving the knob lock catch 120 to rotate between the first position and the second position, so that the structure is very convenient to use. Meanwhile, the whole rotating operation stroke of the structure is short, multiple times of rotating operation by a user is not needed, the quick-release advantage is obvious, the use experience is better, the user can conveniently perform in-place judgment, the risk of assembly defects of rotation which is not in place is reduced, and the product has higher reliability and safety.

In the present embodiment, the direction of rotation of the knob lock 120 to the first position is opposite to the direction of rotation of the knob lock 120 to the second position. That is, the knob lock 120 is adapted to rotate between the first position and the second position in a reciprocating manner, such that the knob lock 120 is rotated from the second position to the first position in a predetermined first direction when performing the locking operation, and the knob lock 120 is rotated from the first position to the second position in a second direction when performing the unlocking operation, and wherein the second direction is opposite to the first direction. Therefore, the rotation stroke of the knob lock catch 120 can be limited within an angle range (such as 90 degrees), so that the rotation operation stroke of the knob lock catch 120 is shorter, the quick-release advantage is more obvious, and a user can judge the operation and control action according to the rotation direction of the knob lock catch 120. For example, the user can clearly understand that the knob lock catch 120 is driven in the preset first direction to lock the bracket portion 200 and the base 100, and conversely, the operation of unlocking the bracket portion 200 and the base 100 is more convenient and intuitive, so as to prevent the risk of misoperation.

In this embodiment, the antenna bracket further includes a first limiting structure for limiting a rotation range of the knob lock 120 relative to the lock hole 220.

Specifically, as shown in fig. 10, the first limit structure includes a latch 310 and a blocking wall 322; the knob lock catch 120 is provided with a blocking wall 322, the opening end surface of the lock hole 220 is provided with a fixture block 310, and when the knob lock catch 120 rotates to the first position, the fixture block 310 is blocked against the blocking wall 322 to limit the knob lock catch 120 to continue rotating. Thus, clear locking in-place reminding can be provided for a user, so that the product assembly is simpler, the problem of looseness or vibration caused by the fact that the knob lock catch 120 cannot rotate in place is prevented, and the assembly between the support part 200 and the base 100 is more stable and reliable.

In other embodiments, the latch 310 can be disposed in the locking hole 220.

In other embodiments, the opening end surface of the locking hole 220 or the inside of the locking hole 220 may be designed to be provided with a blocking wall 322, the knob lock 120 is provided with the fixture block 310, and when the knob lock 120 rotates to the first position, the fixture block 310 abuts against the blocking wall 322 to limit the knob lock 120 to continue rotating. It is understood that the latch 310 may be further designed to be a retractable structure, if necessary.

In other embodiments, the first limiting structure may also be a pair of first magnets with the same magnetic pole, and the pair of first magnets are adapted to: when the knob lock catch 120 rotates to the first position, an obvious magnetic repulsion force is generated between the two first magnets to limit the knob lock catch 120 to continue rotating, and when the knob lock catch 120 rotates from the first position to the second position, the magnetic repulsion force between the two first magnets is gradually reduced along with the rotation.

In this embodiment, as shown in fig. 10, the antenna bracket further includes a bayonet 320, the bayonet 320 is adapted to move relative to the latch 310 when the knob lock 120 is rotated, and when the knob lock 120 is rotated, the bayonet 320 can be sleeved outside the latch 310 and slidably fit with the latch 310, so that the knob lock 120 can be rotated to the first position. For example, the bayonet 320 is disposed on the knob lock 120, so that during the rotation of the knob lock 120, the bayonet 320 on the knob lock 120 is inserted into the outer side of the fixture block 310 around the locking hole 220 and is slidably engaged with the fixture block 310. On the one hand, bayonet 320 plays the effect of dodging fixture block 310, and on the other hand, utilizes the sliding fit of fixture block 310 and bayonet 320, can make further carrying out more accurate location and spacing between stake portion 200 and the base 100 to further strengthen the stability of knob hasp 120 to stake portion 200 and base 100 locking, reduce vibrations influence. Meanwhile, the knob lock catch 120 can be positioned by utilizing the sliding fit of the bayonet 320 and the fixture block 310, so that the knob lock catch 120 can be positioned at the first position of the lock hole 220 more accurately, the clamping engagement depth between the knob lock catch 120 and the lock hole 220 is ensured to be more accurate, the clamping strength of the knob lock catch 120 and the lock hole 220 is optimized, meanwhile, the stress of the knob lock catch 120 is optimized, the protection of the knob lock catch 120 is facilitated, and the service life of the knob lock catch is prolonged.

In this embodiment, as shown in fig. 10, the blocking wall 322 is disposed at one end of the bayonet 320, an opening 321 is disposed at an end of the bayonet 320 opposite to the blocking wall 322, and an extending direction from the blocking wall 322 to the opening 321 is an arc shape. Therefore, the fixture block 310 enters along the opening 321 of the bayonet 320 and stops and limits with the stop wall 322 when sliding to the tail end along the bayonet 320, the matching and alignment of the fixture block 310 and the stop wall 322 are better, and simultaneously, when the knob lock catch 120 is at the first position, the stability of the knob lock catch is further strengthened by the clamping and sleeve matching of the bayonet 320 and the fixture block 310, the shock absorption effect is good, and the sliding track of the fixture block 310 relative to the opening 321 is more suitable due to the arc shape of the extension direction of the stop wall 322 to the opening 321, so that the knob lock catch 120 can be kept stable and accurate in the rotating process to the first position.

In this embodiment, as shown in fig. 4, the sidewall surface of the latch 310 is at least partially configured as a convex arc surface 311, and the convex arc surface 311 is adapted to the track of the rotation motion of the knob lock 120. The trajectory of the rotational movement of the knob lock 120 can be understood as a rotational path formed by any point eccentric on the knob lock 120 during the rotation of the knob lock 120, by fitting the rotation path to the convex arc surface 311 of the latch 310, it can be also specifically understood that, the curvature of the rotation path is substantially the same as that of the convex arc surface 311, so that the convex arc surface 311 can form smooth sliding contact with the bayonet 320 during the rotation of the knob lock catch 120, thereby providing a damping hand feeling, the clamping problem can not occur, the operation experience of the knob lock catch 120 is improved, the anti-loosening effect of the knob lock catch 120 is better, in addition, the positioning and limiting effects on the knob lock catch 120 can be further improved through the adaptation of the convex arc surface 311 and the bayonet 320, thus, the locking between the bracket portion 200 and the base 100 is more stable, the locking is not easy to shake, and the supporting effect on the antenna 600 is better.

In this embodiment, as shown in fig. 4, the number of the first limiting structures is two, the two blocking walls 322 are rotationally symmetrically distributed about the central line of the knob lock 120 when rotating, and the two locking blocks 310 are relatively distributed about the central line of the knob lock 120 when rotating. Through setting up two sets of first limit structure to make its central line relative distribution when rotatory about knob hasp 120, when realizing further strengthening the spacing effect of knob hasp 120, can make the atress on the knob hasp 120 keep the symmetry, more do benefit to knob hasp 120 and keep steadily, be difficult to warp, off normal, promote product reliability, and extension product life.

In this embodiment, as shown in fig. 4, a protrusion 312 is disposed on a sidewall surface of at least one latch 310, and the protrusion 312 is configured to be snap-fit with a corresponding bayonet 320 when the knob lock 120 is rotated to the first position. The damping force generated by the engagement of the protrusion 312 and the bayonet 320 provides an in-place indication, so that when a user feels an obvious click feeling (also called a shift feeling or a paragraph feeling) or hears a click sound generated by the engagement of the bayonet 320 and the protrusion 312 in the process of rotating the knob lock 120, the user is informed that the knob lock 120 has reached the first position, the user does not need to continue to rotate, the product is more convenient to use, and the fixture block 310 and the blocking wall 322 can be protected.

In this embodiment, as shown in fig. 4, preferably, two sides of the locking hole 220 are respectively provided with a latch 310, two corresponding notches 320 are provided on the knob lock 120 for matching with the latch 310, and one of the latches 310 is provided with a protrusion 312 for snap-fitting with the notch 320. Therefore, the user can obtain clear in-place indication information, meanwhile, the operation resistance of the knob lock catch 120 is not too large, and the use experience of the product is better.

In this embodiment, the antenna bracket further includes a second limiting structure for limiting a rotation direction of the knob lock 120 relative to the lock hole 220. In this way, the second limiting structure is utilized to limit the knob lock catch 120, so that the knob lock catch 120 can be prevented from rotating endlessly along a single direction, and a user is prompted to drive the knob lock catch 120 to rotate between the first position and the second position in a reciprocating manner, and thus, the rotation stroke of the knob lock catch 120 is effectively controlled, the rotation operation stroke of the knob lock catch 120 is short, and the quick-release advantage is more obvious.

Specifically, as shown in fig. 11, the second limit structure includes a baffle 410 and a stopper 420; the baffle 410 is disposed on the knob lock 120, the stop 420 is disposed on one of the base 100 and the bracket portion 200 on which the knob lock 120 is disposed, and when the knob lock 120 rotates to the second position, the baffle 410 abuts against the stop 420 to limit the knob lock 120 from continuing to rotate. Like this, can provide clear unblock for the user and put in place and remind for the product is controlled more simply, prevents simultaneously that the problem that the brute force between knob hasp 120 and the lockhole 220 from dismantling and arousing the damage when knob hasp 120 is rotatory not in place, has good guard effect to lockhole 220 and knob hasp 120.

In other embodiments, the second limiting structure may also be a pair of second magnets with the same magnetic pole, and the pair of second magnets are adapted to: when the knob lock catch 120 rotates to the second position, an obvious magnetic repulsion force is generated between the two second magnets to limit the knob lock catch 120 to continue rotating, and when the knob lock catch 120 rotates from the second position to the first position, the magnetic repulsion force between the two second magnets is gradually reduced along with the rotation.

In this embodiment, as shown in fig. 7, one end of the knob lock 120 for connecting the base 100 or the bracket portion 200 is recessed inward, and the baffle 410 is provided on an outer side wall of the inwardly recessed end of the knob lock 120. Like this, baffle 410 can not evaginate for the whole appearance quality of knob hasp 120 is better, simultaneously, also does benefit to the whole size of knob hasp 120 compacter, realizes product miniaturization and lightweight.

In this embodiment, as shown in fig. 10, the two blocking plates 410 are included, and the one blocking plate 420 is included, and the two blocking plates 410 are rotationally symmetrically distributed about a center line of the knob lock 120 when rotating. Like this, the assembly of knob hasp 120 need not to distinguish positive and negative, and the assembly is more convenient, and can avoid knob hasp 120 misloading problem, and the product yields is higher.

In this embodiment, as shown in fig. 7, 8 and 9, the antenna stand further includes a center connector 500, the center connector 500 is connected to one of the base 100 and the stand portion 200, and the knob lock catch 120 is fitted around the outside of the center connector 500 and can rotate around the center connector 500. Thus, the knob lock catch 120 is more convenient to assemble, and the knob lock catch 120 is assembled in such a form, so that the poor situation that the knob lock catch 120 is loosened or slides due to multiple rotations can be basically avoided, and the assembly reliability of the knob lock catch 120 can be better ensured.

In this embodiment, as shown in fig. 7, the knob lock 120 includes a central body 121 and a plurality of rotation lugs 122. Specifically, a cavity is formed in the central body 121, the central body 121 is rotatably connected with the central connector 500, and the central connector 500 is at least partially disposed in the cavity in the central body 121; the plurality of rotation lugs 122 are connected to the central body 121, and the plurality of rotation lugs 122 protrude outward centering on the central connection member 500. Thus, the user applies torque to the outwardly protruding rotation lug 122 to drive the knob lock 120, which is more labor-saving in operation, and such a structure also provides a better user-friendly operation.

In the present embodiment, as shown in fig. 6, when the knob lock 120 rotates to the first position, at least a portion of a projection of each of the rotation lugs 122 on the surface where the locking hole 220 is located outside the surface, and it can also be understood that, when the knob lock 120 rotates to the first position, a projection of each of the rotation lugs 122 along the axial direction of the locking hole 220 is at least partially located outside the outer contour region of the locking hole 220; when the knob lock catch 120 rotates to the second position, the projections of the plurality of rotation lugs 122 on the surface where the lock hole 220 is located are located in the surface, or it can be understood that when the knob lock catch 120 rotates to the second position, the projections of the plurality of rotation lugs 122 along the axial direction of the lock hole 220 are located in the outer contour region of the lock hole 220. Thus, when the knob lock catch 120 is at the first position, the projection of the rotary lug 122 is located outside the outer contour area of the lock hole 220 and can be hooked at the position around the lock hole 220, so as to be reliably clamped with the lock hole 220, thereby reliably and firmly locking the bracket part 200 and the base 100, and when the knob lock catch 120 is at the second position, because the projection of the rotary lug 122 is located in the outer contour area of the lock hole 220, the knob lock catch 120 can freely shuttle to the lock hole 220 without hindrance, thereby realizing the unlocking between the bracket part 200 and the base 100.

In the present embodiment, as shown in fig. 7 and 10, the rotary lug 122 further includes a bottom plate 1221 and a lug portion 1222, the bottom plate 1221 is connected to the central body 121; the lug portion 1222 is provided on the base plate 1221 and connected to the central body 121. Thus, the rotary lug 122 can obtain higher structural strength and is not easy to deform due to stress, so that the knob lock catch 120 can well maintain the shape thereof, and the knob lock catch 120 can be reliably clamped with the lock hole 220 at the first position and smoothly shuttled to the lock hole 220 at the second position in the long-term use process.

In this embodiment, as shown in fig. 7 and 10, the lug portion 1222 is provided with a non-slip rib 1223. Therefore, the user can drive the knob lock catch 120 to rotate to prevent skidding, the problem of skidding of the hand is avoided, and the operation comfort is better.

In the present embodiment, as shown in fig. 7, the rotation lugs 122 include two rotation lugs 122, and the two rotation lugs 122 are symmetrically distributed about the central body 121. Like this, the user can twist the form of knob hasp 120 and operate, uses more laborsavingly, and compared with the runner form, this structure is lower to the hand operating space requirement, can be applicable to in the antenna boom product of small volume better.

More specifically, the knob lock 120 is designed to be an elongated circular cylinder, two end portions of a long side of the elongated circular cylinder are formed as two lug portions 1222, a middle position of the long side is formed as a central body 121, the lock hole 220 is an elongated circular hole, when the knob lock 120 is at the second position, the long side of the elongated circular cylinder faces the lock hole 220, the elongated circular cylinder can pass through the elongated circular hole, when the knob lock 120 is at the first position, the knob lock is staggered with the lock hole 220, the elongated circular cylinder is clamped with the elongated circular hole, preferably, when the knob lock 120 is at the first position, the long side of the elongated circular cylinder is staggered with the long side of the elongated circular hole by 90 degrees, so that the knob lock 120 rotates within a 90-degree central angle area to realize switching between the first position and the second position, of course, the present solution is not limited to the listed 90-degree central angle, and in fact, a person skilled in the art can also divide the rotation angle of the knob lock 120 when switching between the first position and the second position by 90 degrees to realize switching between the first position and the second position to divide the range by 90 degrees to divide the range to obtain the range of 0 degrees as required And flexibly adjusting under the other condition.

In this embodiment, as shown in fig. 4 and fig. 6, a lock hole 220 is disposed on the support portion 200, and the knob lock 120 is disposed on the base 100, wherein the support portion 200 is further provided with a first indicator structure, and the first indicator structure specifically includes a first rotation indicator 231 for indicating a direction from the second position to the first position.

Further, as shown in fig. 4 and 6, the first indicator structure further includes a locking indicator pattern 232, and the locking indicator pattern 232 corresponds to the first rotation indicator 231 and is disposed adjacent to the end surface of the opening 321 of the locking hole 220. The first indication mark structure can provide a locking direction indication for a user, so that the fool-proof effect of operation is realized, and the use operation is simplified.

Alternatively, the first indicator structure may be a sticker or a plastic film adhered to the bracket portion 200, or may be formed by a rib integrally formed with the bracket portion 200, or may be formed by a groove formed on the surface of the bracket portion 200.

In other embodiments, the base 100 may be provided with a locking hole 220, and the bracket portion 200 is provided with a knob lock 120. Wherein, the first indicator structure is disposed on the base 100.

In this embodiment, as shown in fig. 4 and 6, a second indicating structure is provided on the bracket portion 200 or the base 100, and the second indicating structure includes a second rotation indicator 241 for indicating a direction from the first position to the second position.

Further, as shown in fig. 4 and fig. 6, a second indication mark structure is further disposed on the bracket portion 200, the second indication mark structure further includes an unlocking indication pattern mark 242, and the unlocking indication pattern mark 242 corresponds to the second rotation direction mark 241 and is disposed adjacent to the end surface of the opening 321 of the lock hole 220. Utilize second indication mark structure can provide the instruction of unblock direction for the user, realize the operation and prevent slow-witted effect for the operation is simplified more.

Alternatively, the second indication structure may be a sticker or a plastic film adhered to the bracket portion 200, or may be formed by a rib integrally formed with the bracket portion 200, or may be formed by a groove formed on the surface of the bracket portion 200.

In the present embodiment, one of the base 100 and the stand portion 200 is formed with a first hinge 110, and the other is formed with a second hinge 210, and the first hinge 110 is hinged to the second hinge 210 so that the stand portion 200 can be rotated to be folded or unfolded with respect to the base 100; the first hinge 110 is provided with a knob lock 120, and the second hinge 210 is provided with a lock hole 220, as shown in fig. 1, the first hinge 110 and the second hinge 210 are folded when the stand portion 200 is folded, and are folded when the stand portion 200 is unfolded as shown in fig. 2. Utilize knob hasp 120 and lockhole 220 assembly to lock when closing through first hinge 110 and second hinge 210 to make the locking at the expansion state between stake portion 200 and the base 100, such structure can make the cooperation area of being connected between stake portion 200 and the base 100 bigger, and stake portion 200 and base 100 are more firm, stable when the expansion state, are difficult to rock, thereby further promote stability and the reliability of supporting antenna 600.

In the present embodiment, as shown in fig. 3, 4, 6 and 8, one of the first hinge 110 and the second hinge 210 has a hinge shaft 130 at a side thereof, and a hinge portion 251 at the other side thereof (which can be understood specifically with reference to the first hinge portion 2511 and the second hinge portion 2512); both ends of the hinge shaft 130 are respectively provided with a connection shaft 131, and the connection shaft 131 is connected with the hinge portion 251. The structure is simple, and the reliability of the rotary connection between the bracket part 200 and the base 100 is good.

In the present embodiment, the connecting shaft 131 is preferably an over-damped connecting shaft. Thus, after the support part 200 and the base 100 are unlocked, the connecting shaft 131 can provide damping force to support the support part 200 and the antenna 600, so that the problem that the support part 200 and the antenna 600 suddenly turn downwards due to gravity when the antenna is unlocked can be solved, and the antenna 600 can be well protected.

Alternatively, an end surface of the hinge portion 251 near one end of the hinge shaft 130 is a non-planar surface, more specifically, a concave arc surface, a convex arc surface, a concave and convex surface, a slope surface, etc. Therefore, a damping matching effect can be formed between the hinging part 251 and the hinging shaft 130, the problem that the bracket part 200 and the antenna 600 suddenly overturn downwards due to gravity when unlocking can be avoided, the antenna 600 can be well protected, a non-planar contact is formed between the hinging part 251 and the hinging shaft 130, a damping effect can be achieved to a first degree, and the antenna stability is improved.

More specifically, as shown in fig. 3, 4, 6 and 8, the hinge portion 251 specifically includes a first hinge portion 2511 and a second hinge portion 2512, the hinge shaft 130 is located between the first hinge portion 2511 and the second hinge portion 2512, and one of the connecting shafts 131 at two ends of the hinge shaft 130 is connected to the first hinge portion 2511, and the other connecting shaft is connected to the second hinge portion 2512, so as to realize the hinge fixation of the first hinge 110 and the second hinge 210.

Wherein, as shown in fig. 4, 6 and 8 for example, an end surface of the first hinge portion 2511 near one end of the hinge shaft 130 forms an end surface contact fit with the hinge shaft 130 at a position m in the figure, that is, the first hinge portion 2511 forms an end surface contact fit with an opposite surface of the hinge shaft 130, where a surface of the first hinge portion 2511 for contact fit with the hinge shaft 130 can be selectively designed to be non-planar, so that the first hinge portion 2511 forms a non-planar contact fit with the opposite surface of the hinge shaft 130. Of course, it is understood that the end surface of the second hinge portion 2512 near one end of the hinge shaft 130 is in end-face contact fit with the hinge shaft 130 at the n position in the drawing, and the end surface of the second hinge portion 2512 near one end of the hinge shaft 130 may alternatively be provided as a non-planar surface. Alternatively, both an end surface of the second hinge portion 2512 near one end of the hinge shaft 130 and an end surface of the first hinge portion 2511 near one end of the hinge shaft 130 are designed to be non-planar.

Alternatively, the end surface of the hinge shaft 130 near the end of the first hinge portion 2511 may be designed to be non-planar, and/or the end surface of the hinge shaft 130 near the end of the second hinge portion 2512 may be designed to be non-planar, which may be more specifically understood as a surface of a shoulder portion between the hinge shaft 130 and the connecting shaft 131, such as a concave arc surface, a convex arc surface, a concave and convex surface, a slope surface, etc. Like this also can make and form damping cooperation effect between articulated portion 251 and the articulated shaft 130, avoid the problem of the abrupt gravity downward upset of support portion 200 and antenna 600 during the unblock, can be to antenna 600 good protection, and it can play the shock attenuation effect to form non-planar contact between articulated portion 251 and the articulated shaft 130 in the first degree, promotes antenna stationarity.

Of course, the above two alternatives may be combined in a non-conflicting manner. For example:

an end surface of the first hinge portion 2511 close to the hinge shaft 130 is designed to be non-planar, and at least one of an end surface of the hinge shaft 130 close to one end of the first hinge portion 2511 and an end surface of the hinge shaft 130 close to one end of the second hinge portion 2512 is also designed to be non-planar.

Alternatively, the end surface of the second hinge portion 2512 close to the hinge shaft 130 is designed to be non-planar, and at least one of the end surface of the hinge shaft 130 close to one end of the first hinge portion 2511 and the end surface of the hinge shaft 130 close to one end of the second hinge portion 2512 is also designed to be non-planar.

In the present embodiment, as shown in fig. 3, 4, 5, and 6, the link portion 200 further includes a link arm 253, and the link arm 253 is formed on a side of the first hinge 110 or the second hinge 210 provided with the hinge portion 251 (which can be understood specifically with reference to the first hinge 2511 and the second hinge 2512). The bracket arm 253 is used for supporting the antenna 600, and the bracket arm 253 is arranged on the side of the first hinge 110 or the second hinge 210, so that a user cannot be blocked by the bracket arm 253 when operating the knob lock catch 120, and the product is more convenient to use.

In this embodiment, as shown in fig. 4 and 6, the number of the support arms 253 is one, one of the two hinge portions 251 is provided with an accommodating space, and the support arms 253 are partially provided in the accommodating space. Thus, the support arm 253 can be correspondingly connected to the hinge portion 251, and the moment arm on the hinge portion 251 is shorter, so that the torque load is reduced, and meanwhile, the support arm 253 can rotate more stably, and the antenna 600 can be protected.

More specifically, as shown in fig. 4 and 6, the two hinge portions 251 correspond to a first hinge portion 2511 and a second hinge portion 2512, the first hinge portion 2511 and the second hinge portion 2512 are located at two sides of the hinge shaft 130 in the axial direction, and referring to fig. 3 and 5, the first hinge portion 2511 and the second hinge portion 2512 are located at two sides of the hinge shaft 130, wherein a containing space is provided on the first hinge portion 2511, the second hinge portion 2512 is not provided, and the support arm 253 is partially provided in the containing space to be assembled with the first hinge portion 2511. Such structure, when support portion 200 overturns downwards and realizes folding the accomodating, support portion 200 is located the side of articulated shaft 130, more do benefit to support portion 200 and avoid base 100, also interfere with base 100 when preventing support portion 200 from folding, promote folding effect, simultaneously, avoid the collision condition, and the structure of accommodation space unilateral design, can make support portion 200 or one side (also be as shown in fig. 3 and 5 base 100 right side) that does not set up accommodation space on base 100 dodge out sufficient space, with dodging user's hand, can not disturbed when making user control knob hasp 120, and it is more convenient to use.

Further, one of the first hinge 110 and the second hinge 210, which is provided with the hinge portions 251, specifically includes a hinge body, two hinge portions 251 are distributed at intervals along one side edge of the hinge body, and of the two hinge portions 251, the hinge portion 251 provided with the accommodating space is located at a position other than both ends of the side edge of the hinge body, and the other hinge portion is located at a position between both ends of the side edge of the hinge body. Like this, this articulated portion 251 that is equipped with accommodation space forms the convex design on the hinge body, when satisfying linking demand and the convenient operation nature demand between the part (like between support arm and the articulated portion, between articulated portion and the hinge body etc.), the design of more miniaturization can be realized to the base, does benefit to the product and uses and promote in the movable platform of different models.

For example, as shown in fig. 3, the second hinge 210 specifically includes a hinge body 211, a first hinge unit 2511 and a second hinge unit 2512, the outline of the hinge body 211 is substantially a plate body with a certain thickness, so as to realize the turning-open or good involution between the hinges, in addition, the first hinge 2511 and the second hinge 2512 are both provided on the side of the hinge body 211, wherein the first hinge 2511 and the second hinge 2512 are distributed along the side edge of the hinge body 211 at intervals, the hinge shaft 130 is distributed at the side of the side edge of the hinge body 211 and positioned between the first hinge 2511 and the second hinge 2512, the first hinge 2511 is provided at a position other than both ends of the one side edge of the hinge body 211 in the longitudinal direction, and the second hinge 2512 is provided at a position between both ends of the one side edge of the hinge body 211 in the longitudinal direction. Like this, articulated shaft 130, second articulated portion 2512, hinge body 211, first articulated portion 2511 and the whole space planning of accommodation space on it is compacter, reasonable, the design that more miniaturization can be realized to the base, and the side of hinge body 211 is put to first articulated portion 2511 and the whole accommodation space on it, more convenient in the hand operation knob hasp, and first articulated portion 2511 and the accommodation space on it also rationally avoids the upset region of hinge body 211, bigger turnover angle can be realized to the leg portion, it is also better to accomodate the effect.

Of course, the present design is not limited thereto, and in other embodiments, the second hinge 210 may be replaced with the first hinge 110.

In the present embodiment, it is preferable that the knob lock 120 and the lock hole 220 are located on the first hinge 110 and the second hinge 210 between the first hinge 2511 and the second hinge 2512 as shown in fig. 4 and 6, so that the reliability of locking the first hinge 110 and the second hinge 210 can be further improved.

In the present embodiment, as shown in fig. 4 and 6, the first hinge portion 2511 and the second hinge portion 2512 are provided in the second hinge 210, and the auxiliary support rib 252 is separately provided in the second hinge 210, and the auxiliary support rib 252 is connected to the first hinge portion 2511.

Of course, in other embodiments, in the case where the first hinge portion 2511 is provided on the first hinge 110, the auxiliary support rib 252 may be provided on the first hinge 110 to support the first hinge portion 2511 thereon.

In the present embodiment, as shown in fig. 7 and 11, the base 100 is provided with a stopper 140, and the stopper 140 is used for supporting the bracket portion 200 when the bracket portion 200 is folded with respect to the base 100 to limit the bracket portion 200 from continuing to rotate. Therefore, the maximum downward-turning angle of the bracket part 200 relative to the base 100 can be limited, so that the antenna 600 is prevented from colliding with the movable platform body in the downward-turning process of the bracket part 200, and the antenna 600 and the movable platform body are well protected.

For example, the stopping portion 140 may be disposed on the first hinge 110.

As shown in fig. 1 to 11, an embodiment of the second aspect of the present application provides an antenna assembly including: an antenna 600; in the antenna stand according to any of the above technical solutions, the antenna 600 is mounted on the stand portion 200 of the antenna stand.

Preferably, antenna 600 is an RTK (Real-time kinematic) antenna. It can be understood that the RTK is a real-time dynamic differential technology based on carrier phase observation, can obtain positioning information with higher precision in real time, and can provide higher-precision positioning and guiding support for the operation of the movable platform by carrying the RTK antenna. And this structure realizes folding the accomodating to the RTK antenna through antenna boom, satisfies the installation demand of RTK antenna and the portability demand of small-size movable platform, simultaneously, has quick detach convenience, supports advantages such as reliable, stable, long service life.

In other embodiments, the antenna 600 may be designed as a GPS antenna.

Embodiments of the third aspect of the present application provide a movable platform, comprising: a movable platform body; in the antenna assembly according to any of the above technical solutions, the base 100 of the antenna bracket of the antenna assembly is mounted on the movable platform body.

Alternatively, the movable platform may be a land movable platform (e.g. infantry robot, armoured car, etc.), a water movable platform (e.g. water robot, etc.) or an air movable platform (e.g. aircraft, etc., in particular a drone).

Specifically, the aircraft is illustrated as an aircraft, and the aircraft has a ground frame 700, and the base 100 is connected to the ground frame 700.

More preferably, as shown in fig. 1, when the stand portion 200 of the antenna stand is folded with respect to the base 100, the stand portion 200 is located on the same side of the base 100 as the floor stand 700; like this, make full use of the space around the floor stand 700 accomodate antenna 600 and antenna boom simultaneously, the overall arrangement is compacter, and space utilization is higher.

As shown in fig. 2, when the stand part 200 is unfolded relative to the base 100, the stand part 200 and the floor stand 700 are located at the upper and lower sides of the base 100, so that the height of the floor stand 700 is further utilized to support the antenna 600, and the requirement for the supporting height of the antenna 600 can be further ensured.

In summary, the antenna bracket, the antenna assembly and the movable platform provided by the present application can rotate between the bracket portion and the base to realize that the bracket portion can be unfolded to support the antenna and can also be folded to be conveniently stored, and the knob lock catch and the lock hole are arranged between the bracket portion and the base, and the knob lock catch is clamped with the lock hole at the first position, so as to ensure that the bracket portion and the base can be firmly locked after being unfolded, thereby ensuring that the antenna is stably and reliably supported, and in the structure, the knob lock catch realizes unlocking or locking between the control and the lock hole in a manner of rotating between the first position and the second position relative to the lock hole, so that there is basically no assembly damage between the knob lock catch and the lock hole, which is more beneficial to prolonging the service life of the product, and a user only needs to perform the control action of unlocking or locking for driving the knob lock catch to rotate between the first position and the second position, have convenient to use nature, simultaneously, the whole rotatory operation stroke of this structure is also shorter, need not the user and carries out many times of rotation operation, and the quick detach advantage is more obvious, uses and experiences also better, and also the user of being more convenient for puts in place the judgement to the knob hasp, reduces the assembly defect risk that the rotation is not put in place, makes the product have more reliability and security.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna mount for connecting an antenna to a movable platform, wherein the antenna mount comprises:

a base for connecting to the movable platform;

the bracket part is used for connecting the antenna, is rotatably connected with the base and can be folded or unfolded relative to the base;

one of the base and the support part is provided with a knob lock catch, the other one of the base and the support part is provided with a lock hole, and the knob lock catch can penetrate through the lock hole and can rotate relative to the lock hole; when the knob lock catch rotates to a first position relative to the lock hole, the bracket part is locked with the base so that the bracket part can be unfolded, and when the knob lock catch rotates to a second position relative to the lock hole, the bracket part is unlocked with the base so that the bracket part can be folded;

a first hinge is formed on one of the base and the bracket part, and a second hinge is formed on the other of the base and the bracket part, and the first hinge is hinged with the second hinge so that the bracket part can rotate to be folded or unfolded relative to the base;

the first hinge is provided with the knob lock catch, the second hinge is provided with the lock hole, and the first hinge and the second hinge are opened when the support part is folded and are closed when the support part is unfolded.

2. The antenna mount of claim 1, wherein the direction of rotation of the knob lock to the first position is opposite the direction of rotation of the knob lock to the second position.

3. The antenna bracket as recited in claim 2, further comprising a first limiting structure for limiting a range of rotation of the knob lock relative to the lock aperture.

4. The antenna stand as claimed in claim 3, wherein the first stopper structure includes a latch and a blocking wall;

the knob lock catch is provided with one of the clamping block and the blocking wall, the other of the clamping block and the blocking wall is arranged on the inner side face or the opening end face of the lock hole, and when the knob lock catch rotates to the first position, the clamping block and the blocking wall are blocked and leaned against to limit the knob lock catch to rotate continuously.

5. The antenna bracket according to claim 4, wherein the antenna bracket further comprises a bayonet, and when the knob lock is rotated, the bayonet can be sleeved outside the fixture block and is in sliding fit with the fixture block, so that the knob lock can be rotated to the first position.

6. The antenna stand according to claim 5, wherein the blocking wall is disposed at one end of the bayonet, an opening is disposed at an end of the bayonet opposite to the blocking wall, and an extending direction from the blocking wall to the opening is arc-shaped.

7. The antenna holder according to claim 4, wherein the side wall surface of the latch is at least partially configured as a convex arc surface that conforms to a trajectory of the rotational movement of the knob lock.

8. The antenna bracket according to claim 5, wherein the number of the first limiting structures is two, the two blocking walls are rotationally symmetrically distributed about a center line of the knob lock during rotation, and the two clamping blocks are oppositely distributed about the center line of the knob lock during rotation.

9. The antenna bracket according to claim 8, wherein a protrusion is provided on a side wall surface of at least one of the clamping blocks, and the protrusion is used for being in snap fit with a corresponding bayonet when the knob lock catch is rotated to the first position.

10. The antenna bracket as recited in claim 1, wherein the antenna bracket further comprises a second limiting structure for defining a rotational direction of the knob lock relative to the lock aperture.

11. The antenna stand of claim 10, wherein the second limiting structure comprises a baffle and a stop;

the baffle is arranged on the knob lock catch, the stop block is arranged on one of the base and the support part, which is provided with the knob lock catch, and when the knob lock catch rotates to the second position, the baffle and the stop block abut against each other to limit the knob lock catch to continue rotating.

12. The antenna stand according to claim 11, wherein one end of the knob lock for connecting the base or the stand portion is recessed inward, and the baffle is provided on an outer sidewall of the inwardly recessed end of the knob lock.

13. The antenna mount of claim 11, wherein the number of baffles is two, and the number of stops comprises one, the two baffles being rotationally symmetric about a centerline of the knob lock when rotated.

14. The antenna mount of claim 1, further comprising a center connector coupled to one of the base and the mount portion, the knob lock being received around an outside of the center connector and rotatable about the center connector.

15. The antenna mount of claim 14, wherein the knob lock comprises:

the central body is rotatably connected with the central connecting piece, and at least part of the central connecting piece is arranged in a cavity in the central body;

the rotary lugs are connected with the central body and protrude outwards by taking the central connecting piece as the center.

16. The antenna bracket according to claim 15, wherein when the knob lock is rotated to the first position, at least a portion of a projection of each of the rotation lugs on a surface where the locking hole is located outside the surface;

when the knob lock catch rotates to the second position, the projection of the plurality of the rotating lugs on the surface where the lock hole is located in the surface.

17. The antenna mount of claim 15, wherein the swivel ear comprises:

a base plate connected to the central body;

the lug part is arranged on the bottom plate and is connected with the central body.

18. An antenna mount in accordance with claim 17, wherein the lug portions are provided with anti-slip ribs.

19. The antenna mount of claim 15, wherein the swivel ears comprise two, and the two swivel ears are symmetrically distributed about the central body.

20. The antenna stand as claimed in claim 1, wherein a first indicator structure is provided on the base or the stand portion provided with the locking hole, the first indicator structure including a first rotary indicator for indicating a direction along the second position to the first position.

21. The antenna stand as claimed in claim 20, wherein the first indicator structure further includes a locking indicator pattern mark corresponding to the first rotation indicator mark and disposed adjacent to the open end surface of the locking hole.

22. The antenna stand of claim 1, wherein a second indicating indicia structure is provided on the base or the stand portion, the second indicating indicia structure including a second rotary indicator for indicating a direction along the first position toward the second position.

23. The antenna bracket as recited in claim 22, wherein the second indicator structure further comprises an unlocking indicator pattern mark, the unlocking indicator pattern mark corresponding to the second rotation indicator mark and being disposed adjacent to the open end surface of the locking hole.

24. The antenna stand as claimed in claim 1, wherein one side of one of the first hinge and the second hinge is provided with a hinge shaft, and the other side thereof is provided with a hinge part;

and connecting shafts are respectively arranged at two ends of the hinge shaft and are connected with the hinge parts.

25. An antenna mount in accordance with claim 24, wherein the connection axis is an over-damped connection axis.

26. An antenna stand according to claim 24, wherein the end face of the hinged portion adjacent one end of the hinge shaft and/or the end face of the hinge shaft is non-planar.

27. The antenna stand as claimed in claim 24, wherein the stand portion further includes a stand arm formed at a side of the first hinge or the second hinge provided with the hinge portion.

28. The antenna stand as claimed in claim 27, wherein the number of the stand arms is one, the number of the hinge parts is two, one of the hinge parts is provided with a receiving space, and the stand arm is partially provided in the receiving space.

29. The antenna holder according to claim 28, wherein the first hinge or the second hinge provided with the hinge portions includes a hinge body, two hinge portions are spaced apart along one side edge of the hinge body, and of the two hinge portions, the hinge portion provided with the receiving space is located at a position other than both ends of the side edge of the hinge body, and the other hinge portion is located at a position between both ends of the side edge of the hinge body.

30. The antenna stand according to claim 28, wherein an auxiliary support rib is provided on the first hinge or the second hinge provided with the hinge portion, and the auxiliary support rib is connected to the hinge portion provided with the receiving space.

31. The antenna stand according to claim 1, wherein a stop portion is provided on the base, the stop portion being configured to support the stand portion when the stand portion is folded with respect to the base, so as to limit the stand portion from continuing to rotate.

32. An antenna assembly, comprising:

an antenna;

an antenna stand according to any one of claims 1 to 31, said antenna being mounted to a stand portion of said antenna stand.

33. The antenna assembly of claim 32, wherein the antenna is an RTK antenna.

34. A movable platform, comprising:

a movable platform body;

an antenna assembly as claimed in claim 32 or 33, the base of the antenna support of the antenna assembly being mounted to the movable platform body.

35. The movable platform of claim 34 wherein the movable platform comprises an aerial vehicle having a floor stand, the base being connected to the floor stand.

36. The movable platform of claim 35 in which the leg portion of the antenna mount is on the same side of the base as the ground bracket when the leg portion is folded relative to the base;

when the support part is unfolded relative to the base, the support part and the floor stand are positioned at the upper side and the lower side of the base.