WO2019052066A1

WO2019052066A1 - Support frame

Info

Publication number: WO2019052066A1
Application number: PCT/CN2017/116787
Authority: WO
Inventors: 胡泽泰
Original assignee: 广州视源电子科技股份有限公司; 广州视睿电子科技有限公司
Priority date: 2017-09-18
Filing date: 2017-12-17
Publication date: 2019-03-21
Also published as: CN107676602B; CN107676602A

Abstract

Disclosed is a support frame, comprising: two liftable legs (1), wherein the two liftable legs (1) synchronously drive, by means of a lifting driving member, motion mechanisms arranged in the respective legs to perform the lifting movement; a rotary central member (2) fixedly connected to the motion mechanisms and able to perform the lifting movement under the action of the motion mechanisms; and an overturn mechanism (3) arranged on the rotary central member (2) and comprising a fixed seat (31) fixedly connected to the rotary central member (2) and a rotary sleeve (32) rotatably arranged relative to the fixed seat (31), wherein a support portion (323) for mounting an object (5) to be supported is arranged on the rotary sleeve (32), and the object (5) to be supported can be driven to rotate around the rotary central member (2) by means of the overturn mechanism (3). With the object (5) to be supported being mounted on the support frame, stepless height adjustment and overturning of the object (5) to be supported can be realized, facilitating the application of the object (5) to be supported in different use scenarios, meeting different use needs, and improving the user experience.

Description

Support frame

Technical field

The present invention relates to the field of support devices, and in particular, to a support frame.

Background technique

Existing electronic devices, such as flat panels, display screens, etc., are usually supported by a support frame during installation. The support frame generally includes a frame body and a mounting plate fixed to the frame body, and the electronic device is mounted on the mounting plate by a fixing member. Such a bracket allows the electronic device to be in a fixed state after installation, and the height and angle cannot be adjusted according to the needs of use, so it is difficult to meet the requirements of various display positions and display angles.

Summary of the invention

It is an object of the present invention to provide a support frame that can be used to support lifting and reversing of a to-be-supported object, and can meet various user needs of the user.

To this end, the present invention employs the following technical solutions:

Providing a support frame comprising two liftable legs, wherein the two liftable legs are synchronously driven by a lifting drive member to drive movements disposed in their respective interiors to realize lifting movement;

a rotating center member fixedly connected to the moving mechanism, wherein the lifting movement can be realized under the action of the moving mechanism;

An inverting mechanism, disposed on the rotating center member, includes a fixing base fixedly coupled to the rotating center member, and a rotating sleeve rotatably disposed opposite to the fixing seat, the rotating sleeve having a mounting for mounting The support portion can drive the to-be-supported object to rotate around the rotating center member by the turning mechanism.

As a preferred technical solution of the support frame, the fixing seat is provided with a plurality of fixed friction plates, the rotating sleeve is provided with a plurality of rotating friction plates, a plurality of the fixed friction plates and a plurality of the rotating friction plates. Interlaced with each other and overlapping in the circumferential direction of the rotating central member, by the selective contact between the fixed friction plate and the rotating friction plate, the relative position of the fixing seat relative to the rotating sleeve can be realized fixed.

As a preferred technical solution of the support frame, the fixing base comprises an inner mounting seat having an arc structure and an outer mounting seat, and the inner mounting seat is concentric with the outer mounting seat and spaced apart from each other. The rotating sleeve mounting space is also formed in an arc shape between the inner mounting seat and the outer mounting seat.

As a preferred technical solution of the support frame, the rotating sleeve includes a rotating portion having an arc shape and the supporting portion disposed at both ends of the rotating portion for mounting a to-be-supported object, the rotating portion A friction plate mounting groove is disposed on a circumferential direction thereof, and the rotating friction plate is disposed at the friction plate mounting groove, and the fixed friction plate is disposed on the inner mounting seat or the outer mounting seat.

As a preferred technical solution of the support frame, the fixing seat is provided with a plurality of fixed friction plates, and the rotating sleeve is provided with a plurality of rotating friction plates, and the fixed friction plates and the rotating friction plates are Selective contact may limit rotation of the rotating sleeve relative to the mount, and further include a control assembly for controlling the fixed friction plate and the rotating friction plate to contact or separate from each other, the control assembly including a compression spring that moves the fixed friction plate in the direction of the rotating friction plate, and a pressing handle for releasing the force of the compression spring against the fixed friction plate.

As a preferred technical solution of the support frame, the control assembly further includes a control rod that can move the fixed friction plate to a position near or away from the rotary friction plate, the compression spring Nested on the control rod, the pressing handle is hinged with the fixing seat, and the pressing handle has a control boss on which the control rod can be selectively pressed.

As a preferred technical solution of the support frame, the method further includes installing the control component. Controlling a mounting seat, the control mounting seat is fixedly connected to the fixing base, and the control rod simultaneously penetrates the fixed friction plate, the rotating friction plate and the control mounting seat, and the control rod is adjacent to the pressing handle One end of the compression spring is disposed, and a positional relationship between the fixed friction plate and the rotary friction plate is controlled by the compression spring.

As a preferred technical solution of the support frame, the fixing seat is provided with a plurality of fixed friction plates, and the rotating sleeve is provided with a plurality of rotating friction plates, and the fixed friction plates and the rotating friction plates are Selective contact may limit rotation of the rotating sleeve relative to the fixed seat, and further include a control assembly for controlling the fixed friction plate and the rotating friction plate to contact or separate from each other, the control assembly including a control rod and a clamping force fine adjustment mechanism, the control rod simultaneously penetrates the fixed friction plate and the rotating friction plate, and the clamping force fine adjustment mechanism is disposed at an end of the control rod near the fixed friction plate for control An initial frictional force between the fixed friction plate and the rotating friction plate.

As a preferred technical solution of the support frame, the control rod is provided with an external thread near the end of the fixed friction plate, and the clamping force fine adjustment mechanism includes a sleeve disposed on the control rod and has a The externally threaded mating internal threaded nut.

As a preferred technical solution of the support frame, the clamping force fine adjustment mechanism further includes a non-slip sleeve that is also sleeved on the control rod, and the anti-slip sleeve has an internal thread that cooperates with the external thread. The nut is disposed between the anti-slip sleeve and the fixed friction plate.

The invention has the beneficial effects that the present invention provides a support frame capable of lifting adjustment and flip adjustment, and the installation of the object to be supported by the support frame can realize the stepless height adjustment and flipping of the object to be supported, so that the object to be supported is applied to different The usage scenarios meet different usage needs and improve the user experience.

DRAWINGS

The invention will now be described in further detail with reference to the drawings and embodiments.

FIG. 1 is a schematic perspective structural view of a support frame to be supported according to an embodiment of the present invention.

2 is a schematic perspective view of a support frame according to an embodiment of the present invention.

FIG. 3 is a schematic perspective view showing the state in which the inverting mechanism is mounted on the rotating center member according to the embodiment of the present invention.

4 is a schematic exploded view of the inversion mechanism and the rotating center member according to the embodiment of the present invention.

FIG. 5 is a schematic diagram of an exploded state of a control assembly and an inner mount according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of an assembled state of a control component and an inner mount according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of an assembled state of a control component and an inner mount according to an embodiment of the present invention.

Figure 8 is a cross-sectional view taken along line A-A of Figure 7;

In the picture:

1. Lifting legs; 2. Rotating center member; 3. Turning mechanism; 31, fixing seat; 311, fixed friction plate; 312, inner mounting seat; 313, outer mounting seat; 32, rotating sleeve; Sheet; 322, rotating portion; 323, support portion; 324, limiting long hole; 325, connecting screw; 326, sliding friction plate; 4, control assembly; 401, control rod; 402, curved chute; Spring; 404, pressing handle; 405, control boss; 406, control mounting seat; 407, limiting boss; 408, blocking piece; 409, spring mounting groove; 410, handle mounting groove; 411, first hinge hole; 412, a second hinge hole; 413, a limit stop; 414, a nut; 415, an articulated shaft; 5, to be supported.

Detailed ways

The technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only the present invention. Some embodiments, but not all of the embodiments. Based on the embodiments of the present invention, all other realities obtained by those skilled in the art without creative efforts The examples are all within the scope of protection of the present invention.

In the description of the present invention, the terms "connected", "connected", and "fixed" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

As shown in FIGS. 1-8, in the present embodiment, a support frame according to the present invention includes two liftable legs 1, and the two liftable legs 1 are synchronously driven by a lifting drive member. Their respective internal motion mechanisms achieve lifting movements;

The rotating center member 2 is fixedly connected to the moving mechanism, and can realize lifting movement under the action of the moving mechanism;

An inverting mechanism 3, disposed on the rotating center member 2, includes a fixing base 31 fixedly coupled to the rotating center member 2, and a rotating sleeve 32 rotatably disposed opposite the fixing base 31, the rotating sleeve 32 having The support portion 323 of the object to be supported 5 is mounted, and the to-be-supported object 5 can be rotated about the rotation center member 2 by the inversion mechanism 3.

The support frame according to the embodiment can realize the lifting movement of the object to be supported 5 by providing the lifting leg 1 to meet different usage requirements, and the turning mechanism 3 is arranged on the rotating center member 2, through the turning mechanism 3 By driving the rotation of the object to be supported 5, the angle adjustment of the object to be supported 5 can be achieved. The support frame described in this embodiment has both a rotating function and a lifting function, which can meet the needs of more use occasions, improve the application range of the product, and provide a better user experience.

The object to be supported 5 described in this embodiment is a smart tablet, and the to-be-supported object 5 and the smart tablet together form a smart tablet assembly, which comprises a smart tablet body, which is mounted on the device by the inverting mechanism 3 as described above. The rotating center member 2 is such that the smart plate body can be turned over with respect to the rotating center member 2 by the turning mechanism 3.

In other embodiments, the object to be supported 5 may also be any other item that needs to be supported and mounted by the support frame.

The fixing base 31 is provided with a plurality of fixed friction plates 311. The rotating sleeve 32 is provided with a plurality of rotating friction plates 321 , and a plurality of the fixed friction plates 311 and a plurality of the rotating friction plates 321 are alternately arranged with each other. The rotation center members 2 overlap in the circumferential direction, and the fixed fixing of the fixing seats 31 with respect to the rotating sleeve 32 can be achieved by the selective frictional contact between the fixed friction plates 311 and the rotating friction plates 321 .

In the state in which the plurality of fixed friction plates 311 and the rotating friction plates 321 are in contact with each other, the friction between the two is relatively fixed by the friction between the two, and the plurality of fixed friction plates 311 and the plurality of rotating friction plates are respectively fixed. The 321 is arranged at intervals, and frictional force is generated between the adjacent two friction plates. This solution greatly increases the friction area and has a good fixing effect. In a state where the fixed friction plate 311 and the rotary friction plate 321 are not in contact with each other, the rotary sleeve 32 provided with the rotary friction plate 321 can be generated in the arc range defined by the fixed seat 31 with respect to the fixed seat 31 provided with the fixed friction plate 311. Flip.

Specifically, the fixing base 31 has a rotating sleeve installation space for mounting the rotating sleeve 32. The rotating sleeve 32 is disposed in the rotating sleeve installation space, and is rotatable around the rotating center member 2 in the rotating sleeve mounting space, adjacent to the fixed friction plate 311 and the rotating friction plate 321 a first state in which they are in contact with each other and a second state in which they are separated from each other, in which the frictional force between the fixed friction plate 311 and the rotating friction plate 321 is restricted to restrict the rotating sleeve 32 from being The rotation of the fixing base 31 releases the friction between the rotating friction piece 321 and the fixed friction piece 311 in the second state, so that the rotating sleeve 32 can be rotated relative to the fixed seat 31.

The fixing base 31 includes an inner mounting seat 312 and an outer mounting seat 313. The inner mounting seat 312 is concentric with the outer mounting base 313 and spaced apart from each other, and the inner mounting seat 312 and the inner mounting seat 312 are The rotating sleeve mounting space is also formed in an arc shape, and the rotating sleeve 32 includes an arc-shaped rotating portion 322 and is disposed at both ends of the rotating portion 322 for mounting the object to be supported 5 a supporting portion 323 on the rotating portion 322 is provided with a friction plate mounting groove along a circumferential direction thereof, the rotating friction plate 321 is disposed at the friction plate mounting groove, and the fixed friction plate 311 is disposed inside the rotating portion 323 The seat 312 or the outer mount 313.

When the rotating sleeve 32 is rotated relative to the fixed seat 31, the rotating sleeve 32 is always located in the rotating sleeve mounting space and is inverted within a range defined by the rotating sleeve mounting space.

Further, in the embodiment, the rotating portion 322 is provided with a finite length hole 324, and the fixing seat 31 and the rotating sleeve 32 are connected by a connecting member passing through the limiting long hole 324. In the embodiment, the connecting member is a connecting screw 325, and the connecting screw 325 sequentially passes through the outer mounting seat 313, the rotating sleeve 32 and the inner mounting seat 312 and connects the outer mounting seat 313, the rotating sleeve 32 and the inner mounting seat 312, and rotates. In a state where the sleeve 32 is inverted with respect to the fixing base 31, the connecting screw 325 moves in the limiting long hole 324, and the range of movement of the rotating sleeve 32 is restricted by the limit position of the limiting long hole 324.

Further, a sliding friction plate 326 is disposed between the inner mounting seat 312 and the outer mounting seat 313 and the rotating portion 322 in the embodiment, and the sliding seat can be provided by the sliding friction plate 326. A certain initial frictional force is provided between the 31 and the rotating sleeve 32 so that no frictionless free rotation occurs between the two, resulting in a relative position that is not easily controlled.

It should be noted that the arrangement form of the sliding friction plate 326 is not limited to the provision of sliding friction between the inner mounting seat 312 and the outer mounting seat 313 and the rotating portion 322 as described in the embodiment. In other embodiments, the sliding friction plate 326 may be disposed only between the inner mounting seat 312 and the rotating portion 322 or only the sliding friction plate may be disposed between the outer mounting seat 313 and the rotating portion 322. 326. The specific setting form can be designed according to the size, weight and usage scenarios of the actual product.

In order to control the relative position between the fixed friction plate 311 and the rotating friction plate 321 , the support frame described in this embodiment further includes a method for controlling the fixed friction plate 311 and the rotating friction plate 321 to contact or separate from each other. Control component 4.

Specifically, the control component 4 in this embodiment includes a control rod 401 that can move the fixed friction plate 311 toward a position close to or away from the rotating friction plate 321 . The control rod 401 penetrates through the fixed friction plate 311 and the rotating friction plate 321 at the same time. The rotating friction plate 321 is provided with an arcuate sliding groove 402. When the rotating sleeve 32 rotates relative to the fixed seat 31, The lever 401 slides in the arc chute 402. In the relative rotation process, the relative positions of the fixing base 31 and the control rod 401 are fixed, and the rotating sleeve 32 drives the rotating friction plate 321 to rotate. The purpose of the curved sliding groove 402 is to prevent the control rod 401 and the rotating sleeve 32 from occurring. put one's oar in.

The control assembly 4 includes a compression spring 403 for controlling the direction in which the fixed friction plate 311 moves toward the rotating friction plate 321 , and a pressing force for releasing the force of the compression spring 403 on the fixed friction plate 311 . Handle 404.

The control unit 4 further includes a control rod 401, and the control rod 401 can move the fixed friction plate 311 to a position close to or away from the rotating friction plate 321 , and the compression spring 403 is sleeved in the On the control lever 401, the pressing handle 404 is hinged with the fixing base 31, and the pressing handle 404 has a control boss 405 on the pressing lever 401.

The function of the compression spring 403 is to provide the fixed friction plate 311 with a force for moving in the direction of the rotary friction plate 321 such that the fixed friction plate 311 and the rotary friction plate 321 are in contact with each other, and the number of the fixed friction plate 311 and the rotary friction plate 321 is fixed. When the mutual contact area is constant, the magnitude of the elastic force of the compression spring 403 determines the amount of friction between the fixed seat 31 and the rotating sleeve 32, and further determines the force required to reverse the support 5 . The pressing handle 404 functions to provide the control lever 401 with a thrust opposite to the biasing force of the compression spring 403, and pushes the lever by pressing the handle 404 in the case where the contact between the fixed friction plate 311 and the rotating friction plate 321 needs to be released. 401, moving in a direction opposite to the direction of the elastic force of the compression spring 403, during which the compression spring 403 is further compressed, and the friction between the fixed friction plate 311 and the rotary friction plate 321 becomes small or even disappears.

Specifically, the control mount 406 for mounting the control component 4 is further included in the embodiment, the control mount 406 is fixedly connected to the fixing base 31, and the control rod 401 penetrates the fixed friction plate at the same time. 311, the rotating friction plate 321 and the control mount 406, the control rod 401 is disposed near one end of the pressing handle 404, and the compression spring 403 is disposed, and the fixed friction plate 311 is controlled by the compression spring 403 The positional relationship between the rotating friction plates 321 .

The control rod 401 is provided with one end of the compression spring 403, and a limiting boss 407 is disposed. The two ends of the compression spring 403 abut the limiting boss 407 and the control mounting seat 406, respectively. The fixed friction plate 311 and the rotating friction plate 321 are both located on a side of the control mounting seat 406 away from the compression spring 403. One end of the compression spring 403 abuts on the control mount 406, and the other end abuts On the position boss 407, since the position of the control mount 406 is fixed, the limit boss 407 is pressed by the elastic force of the compression spring 403, thereby driving the control lever 401 to move to the side where the compression spring 403 is disposed on the control mount 406, so that One end of the lever 401 in contact with the fixed friction plate 311 is directed to the side of the compression spring 403 The movement causes the fixed friction plate 311 to press the rotating friction plate 321 to generate a frictional force, which limits the relative inversion between the fixed seat 31 and the rotating sleeve 32.

As a preferred technical solution, a stopper 408 is disposed at one end of the control rod 401 near the fixed friction plate 311, and the control rod 401 controls the fixed friction plate 311 by the blocking piece 408. The arrangement of the blocking piece 408 is mainly for facilitating the installation of the control rod 401. During the installation of the control rod 401, it is necessary to pass through the fixed friction plate 311, the rotating friction plate 321 and the control mounting seat 406, so the diameter thereof must be smaller than the diameter of the above-mentioned member. In this case, the detachable flap 408 can be provided to be in contact with the fixed friction plate 311 through the flap 408, thereby achieving control of the fixed friction plate 311.

The control mount 406 is provided with a spring mounting groove 409 for mounting the compression spring 403, and a through hole through which the mounting rod can pass is disposed at the bottom of the spring mounting groove 409. The spring mounting groove 409 is provided to facilitate the mounting and limiting of the compression spring 403, while avoiding the exposure of the compression spring 403, and the inclusion of debris into the compression spring 403 affects the operation of the compression spring 403.

The control mounting seat 406 is further provided with a handle mounting slot 410 for mounting the pressing handle 404. The two sides of the handle mounting slot 410 are symmetrically disposed with a first hinge hole 411, and the pressing handle 404 is The first hinge hole 411 is correspondingly provided with a second hinge hole 412, and the pressing handle 404 is hinged in the handle mounting groove by the hinge shaft 415 passing through the first hinge hole 411 and the second hinge hole 412. 410. A limiting piece 413 is disposed between the compression spring 403 and the limiting boss 407, and the compression spring 403 abuts against the limiting boss 407 through the limiting piece 413.

As a further preferred technical solution, the control component 4 in the embodiment further includes a control rod 401 and a clamping force fine adjustment mechanism, and the control rod 401 penetrates through the fixed friction plate 311 and the rotating friction plate 321 at the same time. The clamping force fine adjustment mechanism is disposed at an end of the control rod 401 near the fixed friction plate 311 for controlling an initial frictional force between the fixed friction plate 311 and the rotating friction plate 321 .

Specifically, the control rod 401 is provided with an external thread near the end of the fixed friction plate 311, and the clamping force fine adjustment mechanism is sleeved on the control rod 401 and has a function corresponding to the external thread. Internally threaded nut 414. By the cooperation of the internal thread and the nut 414, when the initial frictional force needs to be adjusted, the rotating nut 414 is moved on the control rod 401 in the axial direction of the control rod 401, and the closer to the fixed friction plate 311, the processing is generated. The greater the frictional force, the smaller the initial frictional force is when it moves toward the side away from the fixed friction plate 311, and the initial frictional force is adjusted according to the actual use requirement, and the inversion mechanism 3 is worn more frequently. In the case, the nut 414 can be rotated to bring it closer to the fixed friction plate 311 to increase the friction.

In order to prevent loosening of the nut 414 during use, the clamping force fine adjustment mechanism further includes a non-slip sleeve that is also sleeved on the control rod 401, and the anti-slip sleeve has The external thread is matched with the internal thread, and the nut 414 is disposed between the anti-slip sleeve and the fixed friction plate 311.

The clamping force fine adjustment mechanism further includes a diffusion sheet, and the diffusion sheet is sleeved between the nut 414 and the fixed friction plate 311, and the clamping force fine adjustment mechanism and the fixed friction plate 311 can be increased by providing the diffusion sheet. The contact area is prevented from excessively concentrating the force of the clamping force fine adjustment mechanism on the fixed friction plate 311 to cause the fixed friction plate 311 to undergo a concave deformation.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like or the positional relationship are based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of operation. Instead of indicating or implying that the device or component referred to must have a particular orientation, constructed and operated in a particular orientation, it is not to be construed as limiting the invention. Moreover, the terms "first" and "second" are used merely to distinguish between descriptions and have no special meaning.

In the description of the specification, the description of the terms "an embodiment", "an example" or the like means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one of the present invention. In an embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example.

In addition, it should be understood that although the description is described in terms of embodiments, not every embodiment includes only one independent technical solution. The description of the specification is merely for the purpose of clarifying the device, and those skilled in the art should regard the specification as a whole. The technical solutions in the respective embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are merely illustrative of the principles of the invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the invention.

Claims

A support frame, comprising: two liftable legs, wherein the two liftable legs synchronously drive the movement mechanisms disposed in their respective interiors by the lifting drive member to realize the lifting movement;

a rotating center member fixedly connected to the moving mechanism, wherein the lifting movement can be realized under the action of the moving mechanism;

An inverting mechanism, disposed on the rotating center member, includes a fixing base fixedly coupled to the rotating center member, and a rotating sleeve rotatably disposed opposite to the fixing seat, the rotating sleeve having a mounting for mounting The support portion can drive the to-be-supported object to rotate around the rotating center member by the turning mechanism.
The support frame according to claim 1, wherein the fixing base is provided with a plurality of fixed friction plates, the rotating sleeve is provided with a plurality of rotating friction plates, and the plurality of fixed friction plates and a plurality of the rotating frictions. The sheets are staggered with each other and overlap in the circumferential direction of the rotating center piece, and the fixed seat and the rotating friction piece are selectively in contact with each other to realize the fixing seat relative to the rotating sleeve Relatively fixed.
The support frame according to claim 2, wherein the fixing base comprises an inner mounting seat having an arc structure and an outer mounting seat, the inner mounting seat being concentric with the outer mounting seat and spaced apart from each other The rotating sleeve mounting space is also formed in an arc shape between the inner mounting seat and the outer mounting seat.
The support frame according to claim 3, wherein the rotary sleeve includes a rotating portion that is curved and the support portion that is disposed at both ends of the rotating portion for mounting a to-be-supported object, the rotation A friction plate mounting groove is disposed on a portion thereof in a circumferential direction thereof, and the rotating friction plate is disposed at the friction plate mounting groove, and the fixed friction plate is disposed on the inner mounting seat or the outer mounting seat.
The support frame according to any one of claims 1 to 4, wherein the fixing seat is provided with a plurality of fixed friction plates, and the rotating sleeve is provided with a plurality of rotating friction plates through the fixing Selective contact of the friction plate with the rotating friction plate may limit rotation of the rotating sleeve relative to the fixed seat, and further include a control assembly for controlling the fixed friction plate and the rotating friction plate to contact or separate from each other The control assembly includes a compression spring for controlling the movement of the fixed friction plate toward the rotating friction plate, and a pressing handle for releasing the force of the compression spring against the fixed friction plate.
The support frame according to claim 5, wherein the control assembly further comprises a control rod that can move the fixed friction plate to a position near or away from the rotary friction plate, the compression A spring sleeve is sleeved on the control rod, the pressing handle is hinged to the fixing seat, and the pressing handle has a control boss on which the control rod can be selectively pressed.
The support frame according to claim 6, further comprising a control mount for mounting the control assembly, the control mount being fixedly coupled to the mount, the control rod simultaneously extending through the fixed a friction plate, the rotating friction plate, and the control mount, the control rod is provided with the compression spring near an end of the pressing handle, and the fixed friction plate and the rotating friction plate are controlled by the compression spring Positional relationship between.
The support frame according to any one of claims 1 to 4, wherein the fixing seat is provided with a plurality of fixed friction plates, and the rotating sleeve is provided with a plurality of rotating friction plates through the fixed friction plates. Selective contact with the rotating friction plate may limit rotation of the rotating sleeve relative to the fixed seat, and further includes a control assembly for controlling the fixed friction plate and the rotating friction plate to contact or separate from each other, The control assembly includes a control rod and a clamping force fine adjustment mechanism, the control rod simultaneously penetrates the fixed friction plate and the rotating friction plate, and the clamping force fine adjustment mechanism is disposed on the control rod near the fixed friction plate An end portion for controlling an initial frictional force between the fixed friction plate and the rotating friction plate.
A support frame according to claim 8 wherein said lever is adjacent said fixed The end of the friction lining is provided with an external thread, and the clamping force fine adjustment mechanism includes a nut that is sleeved on the control rod and has an internal thread that cooperates with the external thread.
The support frame according to claim 9, wherein the clamping force fine adjustment mechanism further comprises a non-slip sleeve that is also sleeved on the control rod, the anti-slip sleeve having a fit with the external thread Threaded, the nut is disposed between the anti-slip sleeve and the fixed friction plate.