CN214404339U

CN214404339U - Multidirectional regulation self-locking supporting structure

Info

Publication number: CN214404339U
Application number: CN202120365005.XU
Authority: CN
Inventors: 秦然; 邓新元; 陆智; 李德山; 石强
Original assignee: Borgerui Chongqing Technology Co ltd
Current assignee: Borgerui Chongqing Technology Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-10-15
Anticipated expiration: 2031-02-09

Abstract

The utility model discloses a multidirectional regulation auto-lock bearing structure, including the fixed part, rotation supporting part and sliding part, be connected with articulated portion between fixed part and the rotation supporting part, articulated portion is including articulated piece and two auto-lock hinge mechanisms, two auto-lock hinge mechanisms are connected fixed part and rotation supporting part and articulated piece respectively, so that the rotation supporting part supports on the fixed part, and allow the rotation supporting part to rotate around articulated piece and fixed part respectively, be connected through the self-locking straight line slide mechanism between rotation supporting part and the sliding part, so that the sliding part slides and fix a position on the rotation supporting part. The utility model has the advantages that: the self-rotation of the rotating supporting part and the rotation and angle positioning of the relative fixing part can be realized, the sliding part can be adjusted and positioned on the movable part supporting part in a sliding mode, and therefore the multi-angle and multi-posture self-locking adjustment of the sliding part relative to the fixing part is realized, and the multi-angle self-locking adjusting device has the advantages of being simple in structure, convenient to adjust and easy to use.

Description

Multidirectional regulation self-locking supporting structure

Technical Field

The utility model belongs to the technical field of machinery rotates to connect, concretely relates to multidirectional regulation auto-lock bearing structure.

Background

On some products, certain components require rotational adjustment to change their angle, while sliding adjustment to change length or lift, while locking is required at each attitude to meet the use requirements. The common structure for achieving this function is: the relative rotation adjustment and positioning between the two parts are realized by adopting a mode of combining the rotation connection with the locking mechanism; the relative sliding adjustment and positioning between the two parts are realized by adopting a mode of combining the sliding connection with the locking mechanism. For example, to improve comfort in use, seat headrests are often designed to be angularly adjustable by rotation in a vertical plane. However, such angle adjustment structures in the prior art are complicated. In addition, in order to adjust the height of the seat headrest, a lifting mechanism is often arranged between the seat headrest and the seat backrest. However, when there is more than one rotary connecting structure and sliding mechanism in a limited space, the design of the locking device is complicated, and it takes up more installation space, which affects the design and installation of other components. Furthermore, in the case of a rotary joint or a sliding joint that is not subjected to much force, the provision of a locking mechanism is not necessary, which leads to an increase in cost, and is neither economical nor compact.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a multidirectional regulation auto-lock bearing structure.

The technical scheme is as follows:

the key point of the multidirectional adjusting self-locking support structure is that the multidirectional adjusting self-locking support structure comprises a fixing part, a rotating support part and a sliding part;

the hinge part is connected between the fixed part and the rotating support part and comprises a hinge block and two self-locking hinge mechanisms, the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, the first self-locking hinge mechanism is connected with the fixed part and the hinge block, and the second self-locking hinge mechanism is connected with the rotating support part and the hinge block so as to enable the rotating support part to be supported on the fixed part and allow the rotating support part to rotate around the hinge block and the fixed part respectively;

the rotating support part is connected with the sliding part through a self-locking linear sliding mechanism so as to allow the sliding part to slide and be positioned on the rotating support part.

Compared with the prior art, the beneficial effects of the utility model are that: support rotation supporting part and sliding part on the fixed part through auto-lock hinge mechanism to realize rotating the rotation of supporting part and rotation and the angular positioning of relative fixed part, can be at rotation within range continuous regulation, the sliding part can slide regulation and location again on the movable part supporting part, thereby realize that the sliding part is adjusted to the multi-angle and the multi-attitude auto-lock of fixed part, have simple structure, convenient regulation, easy to use's advantage.

Drawings

Fig. 1 is a schematic structural view of a first viewing angle of the present invention;

fig. 2 is a schematic structural view of a second viewing angle of the present invention;

FIG. 3 is an enlarged view of the portion m1 in FIG. 2;

FIG. 4 is a schematic structural view of the present invention with the sliding part removed;

FIG. 5 is a schematic view of another perspective of FIG. 4;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a right side view of FIG. 5;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a schematic structural view of a rotating shaft fixing seat;

FIG. 10 is a schematic view of the connection structure of the hinge portion and the rotation shaft;

FIG. 11 is a left side view of FIG. 10;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11;

FIG. 13 is a left side view of FIG. 1;

FIG. 14 is a cross-sectional view taken along line D-D of FIG. 13;

fig. 15 is an enlarged view of a portion m2 in fig. 14;

FIG. 16 is a cross-sectional view taken along line E-E of FIG. 13.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1, 2 and 13, a multi-directional adjustment self-locking support structure includes a fixing portion 200, a rotation support portion 300 and a sliding portion 400. The hinge part 100 is connected between the fixing part 200 and the rotating support part 300, the hinge part 100 comprises a hinge block 110 and two self-locking hinge mechanisms, the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, the first self-locking hinge mechanism is connected with the fixing part 200 and the hinge block 110, the second self-locking hinge mechanism is connected with the rotating support part 300 and the hinge block 110, so that the rotating support part 300 is supported on the fixing part 200, and the rotating support part 300 is allowed to rotate around the hinge block 110 and the fixing part 200 respectively.

The rotation support 300 is connected to the sliding part 400 by a self-locking linear sliding mechanism to allow the sliding part 400 to slide and be positioned on the rotation support 300. The self-locking linear sliding mechanism includes a sliding groove 410, the sliding groove 410 is opened on the sliding portion 400, the rotating support 300 is slidably disposed in the sliding groove 410, a sliding positioning mechanism and an anti-falling sliding mechanism are disposed between the rotating support 300 and the sliding groove 410, wherein the sliding positioning mechanism is used for relatively locking the rotating support 300 and the sliding groove 410, and the anti-falling sliding mechanism is used for limiting the rotating support 300 in the sliding groove 410 and preventing the rotating support 300 from falling off from the sliding groove 410.

As shown in fig. 4 to 8, the self-locking hinge mechanism includes a shaft sleeve 120 and a rotating shaft, the rotating shaft of the first self-locking hinge mechanism is a first rotating shaft 210, and the first rotating shaft 210 is fixedly disposed on the fixing portion 200; the second self-locking hinge mechanism has a second shaft 310, and the second shaft 310 is fixedly disposed on the rotation support 300. The axial leads of the two rotating shafts are parallel to each other. The shaft sleeves 120 of the first self-locking hinge mechanism and the second self-locking hinge mechanism are both fixedly connected to the hinge block 110, and the two shaft sleeves 120 are respectively connected to two opposite surfaces of the hinge block 110.

The fixing portion 200 includes two rotating shaft holders 220, two of the rotating shaft holders 220 are disposed opposite to each other, and the two rotating shaft holders 220 are connected to each other through the first rotating shaft 210.

As shown in fig. 9, the rotating shaft fixing base 220 includes a mounting plate 221 and a rotating shaft fixing block, the mounting plate 221 is integrally formed on two sides of the rotating shaft fixing block, and the two mounting plates 221 are respectively disposed on two sides of the first rotating shaft 210. The two ends of the first rotating shaft 210 are respectively and fixedly connected with the corresponding rotating shaft fixing blocks.

The thickness of the mounting plate 221 is smaller than that of the rotating shaft fixing block. One side of the mounting plate 221 is a mounting plane 228, the orientation of the mounting plane 228 of the two rotating shaft fixing seats 220 is consistent, and is parallel to the axial lead of the first rotating shaft 210, and a reinforcing rib 225 is arranged between the other side of the mounting plate 221 and the rotating shaft fixing block.

As shown in fig. 5, 6 and 9, the shaft fixing block includes an outer cylinder 222 and an inner cylinder 223 which are concentrically arranged, at least two support ribs 224 are radially connected between the outer cylinder 222 and the inner cylinder 223, all the support ribs 224 are circumferentially and uniformly distributed around the inner cylinder 223, and cavities between the support ribs 224 form lightening holes which are opened on a side surface of the shaft fixing block facing away from the first shaft 210.

The inner ends of the outer cylinder 222 and the inner cylinder 223 are connected with an inner supporting block 226 which extends inwards, and the cross section of the inner supporting block 226 is smaller than the cross section of the outer cylinder 222. Both ends of the first rotating shaft 210 are respectively and fixedly inserted into the corresponding inner supporting blocks 226.

The reinforcing ribs 225 are respectively arranged between the two ends of the outer cylinder 222 and the mounting plate 221, the height of the reinforcing ribs 225 is gradually reduced from the outer cylinder 222 to the mounting plate 221, and the reinforcing ribs 225 are connected with the outer wall of the outer cylinder 222 in a smooth transition mode.

As shown in fig. 10 to 12, each of the shaft sleeves 120 includes at least two elastic rings 121, all the elastic rings 121 are disposed on the same center line and are arranged in parallel along the length direction of the corresponding rotating shaft, and any two adjacent elastic rings 121 in the same shaft sleeve 120 are attached to each other to form the shaft sleeve 120. The elastic ring 121 is tightly held on the rotating shaft to be self-locked.

The elastic ring 121 is further connected with an extension section 122, the extension section 122 is arranged along the radial direction of the rotating shaft, and the extension section 122 of the same shaft sleeve 120 is arranged in parallel and connected with the hinge block 110.

The elastic ring 121 and the extension section 122 are formed by bending the same steel wire, wherein the steel wire wound around the elastic ring 121 is bent in a loop direction so that two ends of the steel wire are close to each other to be held on the corresponding rotating shaft. The extension 122 is bent corresponding to one end of the hinge block 110 to form a bent section 123, and the bent section 123 is embedded in the hinge block 110.

The steel wire wound into the elastic ring 121 is wound around the rotating shaft for more than one turn, and may not be wound for more than two turns. The purpose of this design is that when elastic ring 121 is stressed and deformed radially or annularly, because the steel wire section encircles the rotating shaft for more than one turn, it can provide deformation yielding redundancy and prevent elastic ring 121 from separating from the rotating shaft.

In this embodiment, the hinge block 110 is rectangular plate-shaped, the two shaft sleeves 120 are respectively located outside the two end surfaces of the hinge block 110, the hole center lines of the two shaft sleeves 120 are both parallel to the side surface of the hinge block 110, and all the extension sections 122 are also parallel to the side surface of the hinge block 110. The bending sections 123 are located in the same plane and are in a 7 shape, all the bending sections 123 connected to the same shaft sleeve 120 are arranged in the hinge block 110 in parallel, and the bending sections 123 and the axis of the rotating shaft are located in the same plane. All the bent parts 123 are arranged in parallel in the mold, and are formed into the hinge block 110 through injection molding.

As shown in fig. 5, 7 and 8, a decorative housing 130 is provided outside the hinge block 110, the decorative housing 130 includes a hinge block decorative cover 131 and a hinge decorative cover 132 which are integrally formed, wherein the hinge block decorative cover 131 covers and is connected to a side surface of the hinge block 110, the hinge block decorative cover 131 extends toward the shaft sleeve 120 and is connected to the hinge decorative cover 132, the hinge decorative cover 132 has an arc shape, and the hinge decorative cover 132 covers and is spaced apart from the shaft sleeve 120.

The decorative shell 130 has two pieces, and the two decorative shells 130 are opposite to each other and are connected in a snap fit manner so as to shield the hinge block 110 and the shaft sleeve 120 from both sides. The hinged decorative cover 131 is flat, the hinged decorative cover 131 is opposite to the corresponding side face of the hinged block 110, the hinged decorative cover 131 extends towards the hinged decorative cover 132 and shields the extending section 122, and the edge of the hinged decorative cover 131 is connected with the straight edge of the hinged decorative cover 132.

All the bending sections 123 are arranged in the central area of the hinge block 110, and the yielding holes 111 are penetrated through the edge area of the hinge block 110. The decorative shell 130 is provided with a buckle 133 opposite to the yielding hole 111, and the buckle 133 of the decorative shell 130 is relatively arranged in the yielding hole 111 in a penetrating manner and is connected in a clamping manner.

As shown in fig. 5, 7 and 9, a limiting block 227 is disposed on the inner supporting block 226, the limiting block 227 is close to the end of the first rotating shaft 210, and the limiting block 227 has a limiting surface parallel to the axial line of the first rotating shaft 210. The limit block 227 and the hinge decorative cover 132 close to the limit block constitute a rotation limit structure, and when the edge of the corresponding hinge decorative cover 132 abuts against the limit face, the limit is realized.

The decorative shell 130 not only shields the hinge portion 100 for decoration and protection, but also cooperates with the limit block 227 for limiting.

In this embodiment, the structural feature of the shaft sleeve 120 enables the rotation support 300 to rotate around the first rotating shaft 210 or the second rotating shaft 310 and to be self-locked after the external force is removed or reduced if the torque or the thrust overcomes the friction between the shaft sleeve 120 and the first rotating shaft 210 or the second rotating shaft 310 when the rotation support 300 is subjected to a certain amount of torque or thrust. The shaft sleeve 120 formed by bending and arranging a plurality of steel wires and the extension section 122 connected with the shaft sleeve are shielded by the decorative shell 130.

As shown in fig. 2, 3 and 13 to 16, the sliding positioning mechanism includes a positioning rack 430 and an elastic positioning member 330. The positioning rack 430 is disposed on an inner wall of the slide groove 410 along a sliding direction of the rotation support part 300. The elastic positioning member 330 is disposed on the surface of the rotation supporting portion 300 and faces the positioning rack 430, a positioning protrusion is disposed on the elastic positioning member 330, and is clamped in any adjacent two inter-tooth gaps of the positioning rack 430 to achieve locking, and when the sliding portion 400 is deformed by a force along the sliding direction, the positioning protrusion exits the inter-tooth gaps of the positioning rack 430 to unlock.

The anti-slip sliding mechanism comprises a limiting clamping groove 420 and a limiting clamping block 320. The limiting engaging groove 420 extends along the sliding direction of the sliding portion 400, and a limiting engaging block 320 is slidably disposed in the limiting engaging groove 420, so as to limit the rotation support portion 300 in the sliding groove 410.

As shown in fig. 15 and 16, in the present embodiment, the rotation support portion 300 has an elongated block shape, and both ends of the rotation support portion 300 face the groove walls of the sliding groove 410. The two side groove walls of the sliding groove 410 are respectively provided with one positioning rack 430, and the two positioning racks 430 are opposite in parallel. The two side groove walls of the sliding groove 410 are respectively provided with one limiting clamping groove 420, and the two limiting clamping grooves 420 are opposite in parallel. The positioning rack 430 is close to the notch of the sliding groove 410, and the limiting clamping groove 420 is close to the groove bottom of the sliding groove 410, so as to ensure the strength of the limiting clamping groove 420.

As shown in fig. 2, 3, 14 and 15, the two ends of the rotation supporting portion 300 are respectively integrally formed with one of the limiting blocks 320 corresponding to the two limiting slots 420.

As shown in fig. 4 and 15, the limiting latch 320 is provided with a plurality of ball receiving cavities, the ball receiving cavities are located in the limiting latch 420, and the ball receiving cavities are respectively opened on the surfaces of the slot bottom and the slot wall of the limiting latch 320 facing the limiting latch 420. Ball 321 is embedded in the ball containing cavity, the inner wall of the ball containing cavity is adapted to ball 321, and the surface of ball 321 protrudes out of the opening of the ball containing cavity and is attached to the groove bottom and the groove wall of limiting clamping groove 420.

The opening of the ball containing cavity facing the groove wall at any side of the limiting clamping groove 420 is gradually enlarged from inside to outside, and the inner diameter of the ball containing cavity is larger than the diameter of the ball 321 to facilitate the installation of the ball 321 in the ball containing cavity.

In this embodiment, as shown in fig. 4 and 16, the elastic positioning element 330 is a strip-shaped spring, and the strip-shaped spring is disposed along the direction of the positioning rack 430. A reed mounting groove 340 is respectively arranged on the two end faces of the rotating support part 300, the reed is arranged in the reed mounting groove 340, the two ends of the reed are respectively a fixed end and a sliding end, and the fixed end and the sliding end are attached to the bottom of the reed mounting groove 340. Wherein the fixed end is fixedly connected with the bottom of the reed mounting groove 340, the sliding end is limited to slide along the bottom of the reed mounting groove 340, and the middle portion of the reed is bent and protruded toward the positioning rack 430 to form the positioning protrusion. The positioning projection protrudes out of the reed installation groove 340 and abuts against the corresponding positioning rack 430. The positioning protrusion part of the spring is in a V shape or a U shape, the opening of the positioning protrusion faces the rotation support part 300, and the vertex of the protrusion part of the spring is in smooth transition.

The concrete constraint mode of the sliding end is as follows: as shown in fig. 4 and 16, a limiting hole 350 is formed in the rotation support 300, the limiting hole 350 is located at an end portion of the reed installation groove 340 close to the sliding end, one end of the limiting hole 350 is communicated with the reed installation groove 340, and the other end is opened on the surface of the rotation support 300. The hole wall of one surface of the limiting hole 350 is flush with the bottom of the reed installing groove 340, and the sliding end is movably arranged in the limiting hole 350 in a penetrating mode.

The utility model discloses the slide mechanism that mainly relies on spacing draw-in groove 420 and spacing fixture block 320 to constitute retrains rotation support portion 300, prevents that rotation support portion 300 from deviating from spout 410 to specifically adopt ball 321 to absorb spacing fixture block 320 and spacing draw-in groove 420's clearance, and reduce frictional force, increase of service life. In use, the rotation support 300 is kept relatively fixed and the slider holder 400 is slidably adjusted. When the position of the rotation support part 300 is adjusted, one of the two is pushed by force, and the reed is deformed to exit from the gap between the teeth of the positioning rack 430, so that unlocking is realized; when the external force is removed or reduced to a value that does not allow the positioning projections of the spring leaves to escape from the gap between the teeth of the positioning rack 430, the slider holder 400 or the rotation support 300 remains locked. By adopting the self-locking linear sliding structure, the locking and unlocking sliding can be realized very conveniently.

The second rotation shaft 310 is disposed along a length direction of the rotation support 300 and is located on a surface of the rotation support 300 corresponding to the notch of the slide groove 410. This can receive a radial pressure to support the rotation support part 300 and the sliding part 400.

One application scenario of the present embodiment is a connection structure that is mounted on a seat back as a headrest. The rotating shaft fixing seat 220 is installed on the seat back, the installation plane 228 of the rotating shaft fixing seat 220 is attached to the seat back, the first rotating shaft 210, the second rotating shaft 310 and the rotating support 300 are all arranged along the horizontal direction, the sliding portion 400 vertically slides on the rotating support 300, and the sliding portion 400 serves as a headrest back plate for installing a headrest assembly. After the installation is finished, three types of adjustment can be independently realized: firstly, the rotation of the headrest in the vertical plane is used for adjusting the angle of the headrest, secondly, the angle of the headrest relative to the backrest and the distance of the headrest relative to the backrest in the front-back direction are adjusted, and thirdly, the headrest is lifted. The novel posture of the headrest is greatly enriched by using three positions for adjustment, the self-locking can be realized, and the use is very convenient.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a multidirectional regulation auto-lock bearing structure which characterized in that: comprises a fixed part (200), a rotary supporting part (300) and a sliding part (400);

a hinge part (100) is connected between the fixing part (200) and the rotating support part (300), the hinge part (100) comprises a hinge block (110) and two self-locking hinge mechanisms, the self-locking hinge mechanisms are respectively a first self-locking hinge mechanism and a second self-locking hinge mechanism, the first self-locking hinge mechanism is connected with the fixing part (200) and the hinge block (110), the second self-locking hinge mechanism is connected with the rotating support part (300) and the hinge block (110), so that the rotating support part (300) is supported on the fixing part (200), and the rotating support part (300) is allowed to rotate around the hinge block (110) and the fixing part (200) respectively;

the rotating support part (300) and the sliding part (400) are connected through a self-locking linear sliding mechanism to allow the sliding part (400) to slide and be positioned on the rotating support part (300).

2. The multidirectional adjustment self-locking support structure according to claim 1, wherein: the self-locking hinge mechanism comprises a shaft sleeve (120) and a rotating shaft, wherein the shaft sleeve (120) comprises at least one elastic ring (121), and the elastic ring (121) is held tightly on the rotating shaft to be self-locked.

3. The multi-directional adjustment self-locking support structure according to claim 2, wherein: the rotating shaft of the first self-locking hinge mechanism is a first rotating shaft (210), and the first rotating shaft (210) is fixedly arranged on the fixing part (200);

the rotating shaft of the second self-locking hinge mechanism is a second rotating shaft (310), the second rotating shaft (310) is fixedly arranged on the rotating support part (300), and the axial leads of the two rotating shafts are parallel to each other;

the shaft sleeves (120) of the first self-locking hinge mechanism and the second self-locking hinge mechanism are fixedly connected to the hinge block (110), and the two shaft sleeves (120) are respectively connected to two opposite surfaces of the hinge block (110).

4. The multi-directional adjustment self-locking support structure according to claim 3, wherein: each shaft sleeve (120) comprises at least two elastic rings (121), all the elastic rings (121) are arranged on the same central line and are arranged along the length direction of the corresponding rotating shaft to form the shaft sleeve (120);

the elastic ring (121) is further connected with an extension section (122), the extension section (122) is arranged along the radial direction of the rotating shaft, and the extension sections (122) of the same shaft sleeve (120) are arranged in parallel and connected with the hinge block (110);

any two adjacent elastic rings (121) in the same shaft sleeve (120) are abutted.

5. The multi-directional adjustment self-locking support structure according to claim 4, wherein: the elastic ring (121) and the extension section (122) are formed by bending the same steel wire, wherein the steel wire section wound into the elastic ring (121) is bent annularly to enable two ends of the steel wire section to be close to each other so as to be tightly held on the corresponding rotating shaft;

the extension section (122) is bent corresponding to one end of the hinge block (110) to form a bending section (123), and the bending section (123) is embedded in the hinge block (110).

6. The multi-directional adjustment self-locking support structure according to claim 5, wherein: the hinge block (110) is rectangular plate-shaped, the two shaft sleeves (120) are respectively positioned outside the two end surfaces of the hinge block (110), and the hole center lines of the two shaft sleeves (120) are parallel to the side surface of the hinge block (110);

a decorative shell (130) is arranged outside the hinge block (110), the decorative shell (130) comprises a hinge block decorative cover (131) and a hinge decorative cover (132) which are integrally formed, wherein the hinge block decorative cover (131) covers the side surface of the hinge block (110) and is connected with the hinge block decorative cover, the hinge block decorative cover (131) extends towards the shaft sleeve (120) and is connected with the hinge decorative cover (132), the hinge decorative cover (132) is arc-shaped, and the hinge decorative cover (132) covers the shaft sleeve (120) and is separated from the shaft sleeve;

the two decorative shells (130) are oppositely buckled and connected with each other, so that the hinging block (110) and the shaft sleeve (120) are shielded from two sides;

run through on articulated piece (110) and have abdication hole (111), it is just right on decoration casing (130) abdication hole (111) are equipped with buckle (133), two buckle (133) of decorating casing (130) are worn to establish relatively in abdication hole (111) and the block is connected.

7. The multi-directional adjustment self-locking support structure according to claim 6, wherein: the fixing part (200) comprises two rotating shaft fixing seats (220), the two rotating shaft fixing seats (220) are arranged oppositely, and the two rotating shaft fixing seats (220) are connected through the first rotating shaft (210);

be equipped with stopper (227) on pivot fixing base (220), stopper (227) are close to first pivot (210) tip, stopper (227) with be close to it hinge dress trim cover (132) are constituteed and are rotated limit structure, and is corresponding hinge dress trim cover (132) edge supports and leans on realize spacingly when stopper (227).

8. The multidirectional adjustment self-locking support structure according to claim 1, wherein: the self-locking linear sliding mechanism comprises a sliding groove (410), the sliding groove (410) is formed in the sliding portion (400), the rotating supporting portion (300) is arranged in the sliding groove (410) in a sliding mode, a sliding positioning mechanism and an anti-falling sliding mechanism are arranged between the rotating supporting portion (300) and the sliding groove (410), the sliding positioning mechanism is used for enabling the rotating supporting portion (300) and the sliding groove (410) to be locked relatively, and the anti-falling sliding mechanism is used for limiting the rotating supporting portion (300) in the sliding groove (410).

9. The multi-directional adjustment self-locking support structure according to claim 8, wherein: the sliding positioning mechanism comprises a positioning rack (430) and an elastic positioning piece (330);

the positioning rack (430) is disposed on an inner wall of the chute (410) along a sliding direction of the rotation support (300);

the elastic positioning piece (330) is arranged on the surface of the rotating supporting part (300) and is opposite to the positioning rack (430), a positioning bulge is arranged on the elastic positioning piece (330), the positioning bulge is clamped in any adjacent two tooth gaps of the positioning rack (430) to realize locking, and when the elastic positioning piece (330) deforms due to the force applied to the rotating supporting part (300) along the sliding direction of the rotating supporting part, the positioning bulge exits from the tooth gaps of the positioning rack (430) to unlock;

the anti-falling sliding mechanism comprises a limiting clamping groove (420) and a limiting clamping block (320), the limiting clamping groove (420) is arranged on the inner wall of the sliding groove (410), the limiting clamping groove (420) extends along the length direction of the positioning rack (430), the limiting clamping block (320) slides in the limiting clamping groove (420), and the limiting clamping block (320) is fixedly connected with the rotating supporting portion (300).

10. The multi-directional adjustment self-locking support structure according to claim 9, wherein: the groove walls on the two sides of the sliding groove (410) are respectively provided with one positioning rack (430);

reed mounting grooves (340) are respectively formed in the rotary supporting part (300) corresponding to the two positioning racks (430), the reeds are arranged in the reed mounting grooves (340), the reeds are strip-shaped, and the reeds are arranged along the direction of the positioning racks (430);

two ends of the reed are attached to the groove bottom of the reed mounting groove (340), the two ends of the reed are a fixed end and a sliding end, the fixed end is fixedly connected with the groove bottom of the reed mounting groove (340), and the sliding end is limited to slide along the groove bottom of the reed mounting groove (340);

the middle part of the reed is bent and protrudes towards the positioning rack (430) to form the positioning protrusion, and the positioning protrusion extends out of the reed mounting groove (340);

two side groove walls of the sliding groove (410) are respectively provided with one limiting clamping groove (420), the two limiting clamping grooves (420) are opposite, and the two limiting clamping grooves (420) are parallel to the positioning rack (430);

the rotating support part (300) is provided with one limiting clamping block (320) corresponding to the two limiting clamping grooves (420), each limiting clamping block (320) is provided with at least two ball containing cavities, the ball containing cavities are located in the limiting clamping grooves (420), and the ball containing cavities are respectively opened on the surfaces of the groove bottom and the groove wall of the limiting clamping block (320) facing the limiting clamping grooves (420);

ball (321) are embedded in the ball containing cavity, the inner wall of the ball containing cavity is matched with the ball (321), the surface of the ball (321) protrudes out of the opening of the ball containing cavity and is attached to the groove bottom and the groove wall of the limiting clamping groove (420).