CN115596935A

CN115596935A - Rotating connection structure and shooting support

Info

Publication number: CN115596935A
Application number: CN202210761954.9A
Authority: CN
Inventors: 陈伟豪
Original assignee: Shenzhen Luxury United Technology Co ltd
Current assignee: Shenzhen Luxury United Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-01-13

Abstract

The embodiment of the invention provides a rotary connecting structure, which belongs to the technical field of supporting devices and comprises a first sleeve, a second sleeve and a first main body, wherein the first sleeve is arranged on a first component of a shooting support; the second sleeve is arranged on a second component of the shooting bracket, and the second sleeve is rotatably sleeved on the first sleeve; the second sleeve is provided with a first accommodating cavity, the first body is sleeved in the first accommodating cavity, and the first body has a movement trend along a first direction relative to the second sleeve so that the second sleeve has an outward expansion trend to realize tight fit of the second sleeve and the first sleeve, and further realize that the first member is retained on the second member. The rotary connecting structure provided by the embodiment of the invention has the advantage of difficulty in loosening.

Description

Rotating connection structure and shooting support

Technical Field

The invention relates to the technical field of supporting devices, in particular to a rotary connecting structure and a shooting support.

Background

The photographing bracket is a device for supporting an electronic terminal, and an existing photographing bracket is generally assembled by components such as a supporting rod, a clamping device, a connecting arm, and the like.

In the existing shooting bracket, the adjacent first member and second member are connected in a rotation damping mode through a rotation damping structure, the arrangement has the advantage that the first member is kept at a certain angle relative to the second member, and the existing rotation damping structure is easy to loosen.

Disclosure of Invention

In view of the defects and shortcomings of the prior art, a first object of the present invention is to provide a rotational connection structure and a photographing bracket.

The invention provides a rotary connecting structure which is used for connecting a first component and a second component of a shooting bracket and is characterized by comprising a first sleeve, a second sleeve and a first main body, wherein the first sleeve is arranged on the first component of the shooting bracket; the second sleeve is arranged on a second component of the shooting bracket, and the second sleeve is rotatably sleeved on the first sleeve; the second sleeve is provided with a first accommodating cavity, the first body is sleeved in the first accommodating cavity, and the first body has a movement trend along a first direction relative to the second sleeve so that the second sleeve has an outward expansion trend to realize tight fit of the second sleeve and the first sleeve, and further realize that the first member is retained on the second member.

Preferably, the second sleeve is provided with a first gap therethrough to facilitate outward expansion of the second sleeve.

Preferably, the rotary connection structure has a first axis of rotation about which the second sleeve rotates relative to the first sleeve, the first direction being parallel to the first axis of rotation; the extending direction of the first gap is parallel to the first rotation axis; the number of the first gaps is more than or equal to 2, and the first gaps are uniformly distributed in the second sleeve; one end of the first accommodating cavity is provided with a first opening, the first main body can be sleeved in the first accommodating cavity through the first opening, and the first gap extends to the first opening.

Preferably, the second sleeve is circumferentially fixed relative to the first body, the rotary connection structure further includes a first protrusion, the first protrusion is protruded from the first body, and the first protrusion is retained in the first gap so as to circumferentially fix the second sleeve relative to the first body.

Preferably, the rotary connection structure further comprises a second projection; the second protrusion is convexly arranged on the inner wall of the second sleeve, the first main body is provided with a first groove, or the second protrusion is convexly arranged on the first main body, the inner wall of the second sleeve is provided with a first groove, and the second protrusion is clamped in the first groove so that the second sleeve is circumferentially fixed relative to the first main body; the rotary connecting structure is provided with a first rotary axis, the second sleeve rotates relative to the first sleeve around the first rotary axis, the extending direction of the first protrusion is parallel to the first rotary axis, and the extending direction of the second protrusion is parallel to the first rotary axis; the number of the first gaps is 2, the number of the first bulges is 2, the number of the second bulges is 2, in a cross section of the rotary connecting structure, a connecting line of any two points of the 2 first bulges is a first connecting line, a connecting line of any two points of the second bulges is a second connecting line, and the first connecting line and the second connecting line are in a cross shape.

Preferably, the cross-sectional area of the first body is gradually reduced along the first direction, the outer wall of the first body is attached to the inner wall of the first accommodating cavity, and the cross-sectional area of the first accommodating cavity is gradually reduced along the first direction.

Preferably, the rotatable connection further comprises a preload member that causes the first body to have a tendency to move in a first direction relative to the second sleeve.

Preferably, the preload member is a first screw member, and a fastening force of the first screw member is adjustable so that a force of the first body against the second sleeve is adjustable.

Preferably, the first screw comprises a rod part and a head part arranged at one end of the rod part, the rotary connection structure further comprises a connection part, the connection part is arranged on the second sleeve, the first main body is provided with a first fastening hole, the rod part of the first screw penetrates through the connection part to be connected with the first fastening hole in a fastening mode, and the head part of the first screw is blocked at the connection part.

Preferably, the second sleeve has a tendency to move in a second direction relative to the first body, the second direction being opposite to the first direction; the first sleeve is provided with a first rotary cavity, the second sleeve is provided with a first rotary surface matched with the first rotary cavity, the second sleeve is rotatably sleeved on the first rotary cavity, the cross section of the first rotary cavity is gradually reduced along a second direction, and the cross section of the first rotary surface is gradually reduced; the first sleeve is limited in sliding movement relative to the second member in a second direction, the second sleeve has a tendency to move relative to the first sleeve in the second direction, and the first turning cavity of the first sleeve is in tight fit with the first turning surface of the second sleeve; the preload member causes the second sleeve to have a tendency to move in a second direction relative to the first sleeve.

Preferably, the rotating connection structure further comprises a first connection piece and a second connection piece, the second sleeve is arranged on the first connection piece, the first connection piece is detachably mounted on the second member, the second member is provided with a first receiving cavity, and the first connection piece is accommodated in the first receiving cavity; the first main body is arranged on the second connecting piece, the second connecting piece is detachably arranged on the second component, and the second connecting piece is accommodated in the first accommodating cavity; the second component is provided with a first positioning column, the first connecting piece is provided with a first positioning hole, the second component is provided with a second positioning column, and the first connecting piece is provided with a second positioning hole; the second member has a first limit structure that axially secures the first connector relative to the first positioning post, the second member has a second limit structure that axially secures the second connector relative to the second positioning post; the second component is provided with a first bearing ring, the first bearing ring is used for bearing the first connecting piece, the first bearing ring enables the first connecting piece to be circumferentially fixed relative to the first positioning column, the second component is provided with a second bearing ring, the second bearing ring is used for bearing the second connecting piece, and the second bearing ring enables the second connecting piece to be circumferentially fixed relative to the second positioning column.

Preferably, the second member includes a first housing, a second housing, a first fastener and a second fastener, the second housing is detachably mounted on the first housing, the first positioning post is disposed on the first housing, the first fastener passes through the second housing and is fastened with the first positioning post, the second positioning post is disposed on the first housing, the second fastener passes through the second housing and is fastened with the second positioning post, the first limiting structure includes a first limiting wall and a second limiting wall, the first limiting wall and the second limiting wall are respectively located on the first housing and the second housing, the first limiting wall abuts against the first connecting member, the second limiting structure includes a third limiting wall and a fourth limiting wall, the third limiting wall and the fourth limiting wall are respectively positioned in the first shell and the second shell, the third limiting wall abuts against the second connecting piece, the fourth limiting wall abuts against the second connecting piece, the first bearing ring comprises a first partial ring and a second partial ring, the first partial ring and the second partial ring are respectively positioned in the first shell and the second shell, after the second shell is separated relative to the first shell, the first connecting piece can be separated from the first partial ring, the first connecting piece can be separated from the second partial ring, the second bearing ring comprises a third partial ring and a fourth partial ring, the third partial ring and the fourth partial ring are respectively positioned in the first shell and the second shell, after the second shell is separated relative to the first shell, the second connecting piece can be separated from the third partial ring, the second connector may be detachable from the fourth partial loop.

The embodiment of the invention provides a shooting bracket, which comprises a connecting arm and a clamp, wherein the clamp is used for installing an electronic terminal, the connecting arm comprises a first arm body, a second arm body and a rotary connecting structure, the first arm body is a first component, the second arm body is a second component, and the clamp is installed on the first arm body.

Preferably, the shooting support further comprises a support rod, the connecting arm is rotatably mounted on the support rod, and the second arm body is rotatably mounted on the support rod; initially, the use direction of the electronic terminal points to a first side space of the second arm body, the first arm body can rotate relative to the second arm body, so that the use direction of the electronic terminal points to a second side space of the second arm body, and the first side space is opposite to the second side space; the second arm body has a first degree of freedom and a second degree of freedom in rotation relative to the support rod, the second arm body rotates circumferentially relative to the support rod when the second arm body has the first degree of freedom in rotation relative to the support rod, and the direction of use of the electronic terminal changes when the second arm body has the second degree of freedom in rotation relative to the support rod, and the second arm body can be held by the support rod; the shooting support further comprises a base, the base is used for supporting the supporting rod, the base is a multi-foot supporting piece, the multi-foot supporting piece can be supported on a supporting surface when being opened, the multi-foot supporting piece can be folded on the supporting rod to form a holding body, and the holding body can be held by a user; the supporting rod comprises a rod main body and a connector, the rod main body is telescopic, the connector is rotatably mounted on the rod main body, the connector can rotate circumferentially relative to the rod main body to enable the second arm body to have a first rotational degree of freedom relative to the supporting rod, the second arm body is rotatably mounted on the connector to enable the second arm body to have a second rotational degree of freedom relative to the supporting rod, the second arm body can be held on the connector, and when the second arm body rotates relative to the connector, the use direction of the electronic terminal is changed; the clamp is rotatably mounted on the first arm body, when the clamp rotates relative to the first arm body, the radial direction of the electronic terminal is changed, and the clamp can be held on the first arm body; the shooting support further comprises a handle, the handle is hinged with the connector in a spherical mode, or the handle rotates around a holding axis relative to the connector, and the included angle between the holding axis and the axis of the rod main body is larger than or equal to 75 degrees and smaller than or equal to 90 degrees; the second arm body is provided with a containing groove, the first arm body can be contained in the containing groove, the clamp is provided with a back face opposite to the electronic terminal, and after the first arm body is contained in the containing groove, the back face of the clamp is close to or attached to the surface of the second arm body; the second arm body is provided with a first surface and a second surface, the first surface is opposite to the second surface, the first surface is provided with a light emitting part, light emitted by the light emitting part illuminates a first side space of the second arm body, the second surface is provided with the accommodating groove, and after the first arm body is accommodated in the accommodating groove, the back surface of the clamp is close to or attached to the second surface of the second arm body; the clamp comprises a clamping main body, a first clamping part and a second clamping part, wherein the first clamping part is rotatably arranged on the clamping main body, the first clamping part can be accommodated in the clamping main body, the second clamping part is rotatably arranged on the clamping main body, and the second clamping part can be accommodated in the clamping main body; when the shooting support is in the state of accomodating, the pole main part is in the state of contracting, many feet support piece receipts in the bracing piece forms the holding body, the second arm body fold in the holding body, the first surface is pressed close to or is laminated in the holding body, the first arm body accomodate in accomodate the groove, the back of anchor clamps is pressed close to or is laminated in the second surface of the second arm body, first clamping part is accomodate in the centre gripping main part, the second clamping part is accomodate in the centre gripping main part, the handle fold in the holding body, the handle is pressed close to or is laminated in the holding body.

The rotary connection structure has the advantages that the rotary damping connection of the first member and the second member is achieved through the tight fit of the first sleeve and the second sleeve, the second sleeve has the tendency of expanding outwards due to the fact that the first body extrudes the second sleeve, the first sleeve and the second sleeve are further tightly fitted, and the rotary damping of the first member and the second member is not prone to loosening. And, after the cooperation of first sleeve and second sleeve is lax, have the squeezing action because of first main part to the second sleeve, can make the second sleeve outwards expand for the further tight fit of second sleeve and first sleeve, thereby avoided because of the damping cooperation lax that first sleeve and second sleeve arouse because of long-time use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of one implementation of a camera stand according to an embodiment of the invention;

FIG. 2 is a schematic view of another angle of the photographing bracket shown in FIG. 1;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an exploded view of the camera stand of FIG. 1;

FIG. 5 is an enlarged view of the structure at B in the structure depicted in FIG. 4;

FIG. 6 is a view showing the photographing support of FIG. 1 in a tilted state or in a tilted state;

FIG. 7 is a state diagram of the imaging stand shown in FIG. 1 in a stored state;

FIG. 8 is a schematic view of the connecting arm and the clamp of the imaging stand shown in FIG. 1;

FIG. 9 is a schematic view of another angle of the structure shown in FIG. 8;

FIG. 10 is an elevation view in one direction of the structure shown in FIG. 9;

FIG. 11 is a cross-sectional view of the structure shown in FIG. 10 taken along line C-C;

FIG. 12 is an enlarged view of the structure shown in FIG. 11 at D;

FIG. 13 is an enlarged view of the structure shown in FIG. 11 at E;

FIG. 14 is an enlarged view of the structure at F in the structure shown in FIG. 11;

FIG. 15 is a cross-sectional view of the structure shown in FIG. 10 taken along line G-G;

FIG. 16 is a rear view of the structure shown in FIG. 10;

FIG. 17 is a cross-sectional view of the structure shown in FIG. 16 taken along line H-H;

FIG. 18 is a schematic view of the structure shown in FIG. 16 with the first arm, clamp, and first sleeve concealed;

FIG. 19 is an enlarged view of the structure of FIG. 18 at I;

FIG. 20 is a schematic view of the structure of FIG. 18 with the second housing hidden;

FIG. 21 is an enlarged view of the structure at J of the structure shown in FIG. 20;

FIG. 22 is an assembled view of the second sleeve, the first body, the first connector and the second connector in the configuration shown in FIG. 21;

FIG. 23 is a right side view of the structure shown in FIG. 22;

FIG. 24 is a cross-sectional view of the structure shown in FIG. 23 taken along line K-K;

FIG. 25 is a schematic view of the second housing of FIG. 18;

FIG. 26 is an enlarged view of the structure of FIG. 25 at L;

fig. 27 is a schematic view of the first arm and the second arm in fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications to the embodiments as necessary without making a contribution to the art after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Referring to fig. 27 (particularly, fig. 15 and 24), the embodiment of the present invention provides a rotational connection structure 100 for connecting a first member 210 and a second member 220 of a photographing bracket, including a first sleeve 110, a second sleeve 121, and a first body 131, wherein the first sleeve 110 is disposed on the first member 210 of the photographing bracket; the second sleeve 121 is arranged on the second member 220 of the shooting bracket, and the second sleeve 121 is rotatably sleeved on the first sleeve 110; the second sleeve 121 has a first receiving cavity 101, the first body 131 is sleeved in the first receiving cavity 101, the first body 131 has a pressing effect on the second sleeve 121, the first body 131 has a movement tendency in a first direction relative to the second sleeve 121 so that the second sleeve 121 has an outward expansion tendency, and thus the second sleeve 121 is tightly fitted to the first sleeve 110, and the first member 210 can be held on the second member 220.

The advantage of this setting is that this rotational connection structure 100 realizes the rotational damping connection of first member 210 and second member 220 through the tight fit of first sleeve 110 and second sleeve 121, because first body 131 extrudes second sleeve 121 and makes second sleeve 121 have the trend of expanding outward, and then makes first sleeve 110 and second sleeve 121 further tight fit, makes the rotational damping of first member 210 and second member 220 difficult lax. Moreover, after the first sleeve 110 and the second sleeve 121 are loosely fitted, the first body 131 presses the second sleeve 121, so that the second sleeve 121 is expanded outwards, the second sleeve 121 and the first sleeve 110 are further tightly fitted, and the loose damping fit caused by the long-term use of the first sleeve 110 and the second sleeve 121 is avoided.

It will be appreciated that the second sleeve 121 has a tendency to move relative to the first body 131 in a second direction, which is opposite to the first direction.

It will be appreciated that the second sleeve 121 and the first body 131 have a tendency to move towards each other.

It is understood that the first body 131 has a tendency to move in the first direction relative to the second sleeve 121, which means that the first body 131 has a possibility to move in the first direction relative to the second sleeve 121, and when the fit between the first sleeve 110 and the second sleeve 121 is slightly loosened, the first body 131 moves in the first direction relative to the second sleeve 121, so that the second sleeve 121 expands outward, thereby restoring the damping force to the first sleeve 110 and the second sleeve 121. The first body 131 has a tendency to move in the first direction with respect to the second sleeve 121, which may also mean that no movement in the first direction of the first body 131 occurs all the time with respect to the second sleeve 121, the first body 131 presses the second sleeve 121 in the first direction.

Illustratively, the shooting support is used for supporting an electronic terminal such as a mobile phone, a tablet, a camera, etc., and the shooting support can be a handheld shooting support, an on-vehicle shooting support, a desktop shooting support, a ground shooting support, etc.

Illustratively, the camera stand generally includes a clamp 600, the clamp 600 refers to a device for mounting or clamping an electronic terminal, e.g., the clamp 600 may be a clamping member, e.g., the clamp 600 may be a part having a first mounting interface, e.g., a threaded opening, a threaded post, a boot opening, a boot head, etc., and accordingly, the electronic terminal has a second mounting interface, e.g., a threaded post, a threaded opening, a boot head, a boot opening, etc. The first member 210 is a part of the clamp 600 and the second member 220 is another part of the clamp 600. To use the photographing stand, the clamp 600 may be held by hand, the clamp 600 may be placed on a platform, the clamp 600 may be mounted on the support pole 300 or the connection arm 200, or the like.

Illustratively, the photographing bracket further includes one or more of the connection arm 200, the support rod 300, and the base 400, the first member 210 may be a portion of the connection arm 200, the second member 220 may be another portion of the connection arm 200, the first member 210 may be a portion of the support rod 300, the second member 220 may be another portion of the support rod 300, the first member 210 may be a portion of the base 400, the second member 220 may be another portion of the base 400, the first member 210 may be any one of the clamp 600, the second member 220 may be the connection arm 200, the support rod 300, and the base 400, the first member 210 may be any one of the connection arm 200, the second member 220 may be any one of the clamp 600, the support rod 300, and the base 400, the first member 210 may be any one of the support rod 300, the second member 220 may be any one of the clamp 600, the connection arm 200, and the base 400, and the first member 210 may be any one of the base 400, the second member 220 may be the clamp 600, the connection arm 200, and the support rod 300.

For example, some shooting stands further include an accessory, the first member 210 may be an accessory, the second member 220 may be any one of the base 400, the supporting rod 300, the connecting arm 200, or the clamp 600, or the first member 210 may be any one of the base 400, the supporting rod 300, the connecting arm 200, or the clamp 600, and the second member 220 may be an accessory.

Illustratively, the photographing bracket includes a support rod 300 and a clamp 600, the clamp 600 is mounted to the support rod 300, the support rod 300 may be a telescopic rod or a fixed length rod, and the support rod 300 may be held by a hand in order to use the photographing bracket, or the support rod 300 may be mounted to a base 400.

Illustratively, the photographing stand includes a support rod 300, a connection arm 200, and a clamp 600, the clamp 600 is mounted to the connection arm 200, the connection arm 200 is mounted to the support rod 300, and the connection arm 200 extends the clamp 600 a certain distance with respect to the support rod 300 to facilitate photographing of the electronic terminal. In order to use the photographing stand, the supporting stick 300 may be held by hand, or the supporting stick 300 may be mounted to a base 400.

Illustratively, the photographing stand includes a connection arm 200 and a clamp 600, the clamp 600 is mounted to the connection arm 200, and the connection arm 200 extends the clamp 600 a certain distance to facilitate photographing by the electronic terminal. In order to use the photographing stand, the connection arm 200 may be held by hand, or the connection arm 200 may be mounted to the support pole 300 or the base 400.

Illustratively, the photographing bracket comprises a base 400, a support rod 300, a connecting arm 200 and a clamp 600, wherein the base 400, the support rod 300, the connecting arm 200 and the clamp 600 are connected in sequence, and the base 400 can be a multi-stand base 400, a flat-plate base 400, a clamping base 400 and a clamping base 400.

Illustratively, the first sleeve 110 is non-detachably or detachably disposed on the first member 210 of the photographing bracket, for example, the first sleeve 110 is integrally disposed on, welded to, or glued to the first member 210, for example, the first sleeve 110 is fastened to the first member 210 by a fastener, for example, the first sleeve 110 is clamped to the first member 210 by a clamping structure.

For example, the second sleeve 121 is integrally or detachably disposed on the second member 220 of the photographing bracket, for example, the second sleeve 121 is integrally disposed on, welded to, or adhered to the first member 210, for example, the second sleeve 121 is fastened to the second member 220 by a fastener, for example, the second sleeve 121 is fastened to the second member 220 by a fastening structure.

Illustratively, the second sleeve 121 has 1 rotational degree of freedom with respect to the first sleeve 110, or the second sleeve 121 has 2 rotational degrees of freedom with respect to the first sleeve 110.

Illustratively, the first direction is a movement tendency direction of the first body 131 relative to the second sleeve 121, the movement tendency refers to a possibility of movement in a certain direction, and the first direction may be any direction that causes the first body 131 to press the second sleeve 121 to cause the second sleeve 121 to expand outward.

Illustratively, the shape of the first receiving cavity 101 and the first body 131 is such that the second sleeve 121 expands outwardly when the first body 131 moves in a first direction relative to the second sleeve 121.

Illustratively, the cross section of the first receiving cavity 101 is constant along the first direction, and the cross section of the first body 131 is gradually reduced along the first direction, for example, the first receiving cavity 101 is a cylindrical cavity, and the first body 131 is a cone/frustum.

Illustratively, the cross section of the first accommodating cavity 101 is gradually reduced along the first direction, and the cross section of the first body 131 is gradually reduced along the first direction, for example, the first accommodating cavity 101 is a truncated cone cavity, and the first body 131 is a truncated cone body.

Illustratively, the cross section of the first accommodating cavity 101 is gradually reduced along the first direction, and the cross section of the first body 131 is unchanged along the first direction, for example, the first accommodating cavity 101 is a conical cavity/a truncated cone cavity, and the first body 131 is a cylinder.

Illustratively, the tight fit of the second sleeve 121 to the first sleeve 110 is an interference fit of the second sleeve 121 to the first sleeve 110.

It will be appreciated that the tight fit of the first sleeve 110 to the second sleeve 121 effects retention of the first member 210 to the second member 220.

It can be understood that the damping force between the first sleeve 110 and the second sleeve 121 is related to the pressing force of the first body 131 on the second sleeve 121, and the larger the pressing force of the first body 131 on the second sleeve 121, the larger the damping force between the first sleeve 110 and the second sleeve 121.

For example, when the fit of the first sleeve 110 and the second sleeve 121 is relaxed, the pressing tendency of the first body 131 relative to the second sleeve 121 may be translated into a pressing movement of the first body 131 against the second sleeve 121 such that the first sleeve 110 and the second sleeve 121 restore the damping force.

Illustratively, the first body 131 has a squeezing tendency towards the second sleeve 121 due to the mounting position of the first body 131 and the second sleeve 121, or the preload member 140 is provided between the first body 131 and the second sleeve 121 such that the first body 131 has a squeezing tendency towards the second sleeve 121.

For example, the first body 131 and the second sleeve 121 are both fixedly mounted on the second member 220, and the first body 131 can still slightly move along the first direction (for example, the connection between the second member 220 and the first body 131 is deformed, or the second member 220, the first body 131, the second sleeve 121, etc. are elastically deformed, or the connection between the second sleeve 121 and the first body 131 is deformed), so that the first body 131 can perform a pressing motion relative to the second sleeve 121.

Illustratively, the second sleeve 121 is fixedly mounted to the second member 220, the first body 131 is slidably mounted to the second member 220 along a first direction in which the first body 131 is slidably movable relative to the second sleeve 121 such that the first body 131 is compressibly movable relative to the second sleeve 121.

Illustratively, the first body 131 is fixedly mounted to the second member 220, the second sleeve 121 is slidably mounted to the second member 220 along a second direction, and the second sleeve 121 is slidably movable relative to the first body 131 along the second direction, such that the first body 131 presses against the second sleeve 121, the second direction being opposite to the first direction.

Illustratively, the first sleeve 110 is axially fixed relative to the second sleeve 121 along a first axis of rotation, e.g., the second member 220 has two retaining sidewalls 207, the first sleeve 110 being positioned between the two retaining sidewalls 207 such that the first sleeve 110 is axially fixed relative to the second sleeve 121.

In other examples, the second sleeve 121 is slidably mounted to the second member 220 in a direction opposite to the first direction, and the first body 131 is fixedly mounted to the second member 220.

In other examples, the second sleeve 121 is slidably mounted to the second member 220 in a direction opposite to the first direction, and the first body 131 is slidably mounted to the second member 220 in the first direction.

Referring to fig. 12, 19, 21, 22, etc., the second sleeve 121 is provided with the first gap 102 therethrough to facilitate the second sleeve 121 to expand outwardly. The advantage of providing the first gap 102 is that expansion of the second sleeve 121 is facilitated when the first body 131 presses against the second sleeve 121.

By way of example, "pass-through" means passing from the inner wall to the outer wall of the second sleeve 121.

In other implementations of the embodiment of the invention, the second sleeve 121 is not provided with a gap, and when the first body 131 presses the second sleeve 121, the second sleeve 121 is elastically deformed so that the second sleeve 121 expands outward. For example, the second sleeve 121 is provided as a thin-shell structure, or the second sleeve 121 is made of a plastic material.

Referring to fig. 15, 19, 22, 24, etc., the rotary joint structure 100 has a first rotary axis about which the second sleeve 121 rotates relative to the first sleeve 110, the extending direction of the first gap 102 being parallel to the first rotary axis; the number of the first gaps 102 is greater than or equal to 2, and the first gaps 102 are uniformly distributed in the second sleeve 121; one end of the first accommodating cavity 101 has a first opening 101a, the first body 131 can be sleeved in the first accommodating cavity 101 through the first opening 101a, and the first gap 102 extends to the first opening 101a. This has the advantage of facilitating, on the one hand, the fitting of the first body 131 into the first receiving chamber 101 and, on the other hand, the squeezing of the second sleeve 121 by the first body 131.

Illustratively, the second sleeve 121 is in axial rotational engagement with the first sleeve 110, and the second sleeve 121 is in the shape of a solid of revolution.

Other examples include 1 first gap 102.

In other examples, the number of the first gaps 102 is at least 2, and the first gaps 102 are not uniformly distributed on the second sleeve 121.

Other examples include that the extending direction of the first gap 102 is not parallel to the first rotation axis, for example, the first gap 102 is inclined with respect to the first rotation axis, and correspondingly, the extending direction of the first protrusion 131a is not parallel to the first rotation axis, for example, the first protrusion 131a is inclined with respect to the first rotation axis.

Other examples are that the first gap 102 extends in a wave or spiral shape, and correspondingly, the first protrusion 131a extends in a wave or spiral shape.

Other examples are that the first gap 102 does not extend to the first opening 101a.

Referring to fig. 12, 19, 22, etc., the second sleeve 121 is circumferentially fixed relative to the first body 131, and the rotating connection structure 100 further includes a first protrusion 131a, the first protrusion 131a is protruded on the first body 131, and the first protrusion 131a is clamped in the first gap 102 to circumferentially fix the second sleeve 121 relative to the first body 131. This has the advantage of avoiding, on the one hand, circumferential deformation of the second sleeve 121 when the first sleeve 110 is rotated relative to the second sleeve 121 due to the arrangement of the first gap 102, and, on the other hand, circumferential rotation of the second sleeve 121 relative to the first body 131 as a whole. The snap fit of the first protrusion 131a with the first gap 102 provides better integrity to the second sleeve 121 without affecting the outward expansion of the second sleeve 121.

Illustratively, the first protrusion 131a is captured in the first gap 102 to circumferentially fix the second sleeve 121 relative to the first body 131, it being understood that the second sleeve 121 is not deformed and the second sleeve 121 is circumferentially fixed relative to the first body 131 as a whole.

Illustratively, the width of the first protrusion 131a matches the width of the first gap 102.

Illustratively, the first protrusion 131a does not protrude from the outer surface of the second sleeve 121.

Obviously, the number of the first protrusions 131a is the same as the number of the first gaps 102.

It can be understood that, since the first sleeve 110 surrounds the second sleeve 121, the first protrusions 131a are not easily disengaged from the first gaps 102 when the first sleeve 110 rotates relative to the second sleeve 121.

Referring to fig. 12, 15, 19, 21, 22, etc., the rotating coupling structure 100 further includes a second projection 122; the second protrusion 122 is protruded on the inner wall of the second sleeve 121, the first body 131 is provided with the first groove 103, or the second protrusion 122 is protruded on the first body 131, the inner wall of the second sleeve 121 is provided with the first groove 103, and the second protrusion 122 is clamped in the first groove 103 so that the second sleeve 121 is circumferentially fixed relative to the first body 131; the rotary connection structure 100 has a first rotation axis, the second sleeve 121 rotates around the first rotation axis relative to the first sleeve 110, the extending direction of the first protrusion 131a is parallel to the first rotation axis, and the extending direction of the second protrusion 122 is parallel to the first rotation axis; the number of the first protrusions 131a is 2, the number of the second protrusions 122 is 2, and in a cross section of the rotating connecting structure 100, a connection line between any two points of the 2 first protrusions 131a is a first connection line, a connection line between any two points of the second protrusions 122 is a second connection line, and the first connection line and the second connection line are crossed. The benefit of providing both the first and

second protrusions

131a, 122 is that it further secures the second sleeve 121 circumferentially relative to the first body 131, resulting in better integrity of the second sleeve 121 and the first and

second protrusions

131a, 122 not affecting the outward expansion of the second sleeve 121.

It is understood that the cross section of the rotary joint structure 100 refers to a section perpendicular to the first axis of rotation.

It will be appreciated that the first and second wires are crossed to provide better integrity of the second sleeve 121 and to provide more stability to the second sleeve 121 when the first sleeve 110 is rotated relative to the second sleeve 121.

Illustratively, the first groove 103 is a blind groove.

Illustratively, the first and second lines are perpendicular to each other.

It can be understood that, since the first sleeve 110 surrounds the second sleeve 121, the second protrusions 122 are not easily removed from the first grooves 103 when the first sleeve 110 rotates relative to the second sleeve 121.

In other examples, the first groove 103 is a through groove, and the first groove 103 has an inner wall of the second sleeve 121 penetrating to an outer wall thereof.

Other examples include 1, 3, etc. first protrusions 131 a.

Other examples are where the first and second connections are not perpendicular.

Other examples include that the first groove 103 extends in a direction that is not parallel to the first rotation axis, e.g. the first groove 103 is inclined with respect to the first rotation axis, and that the second protrusion 122 extends in a direction that is not parallel to the first rotation axis, e.g. the second protrusion 122 is inclined with respect to the first rotation axis.

Other examples are that the first groove 103 extends in a wave-like or spiral-like manner, suitably that the first groove 103 extends in a wave-like or spiral-like manner.

Referring to fig. 24 and the like, the cross-sectional area of the first body 131 is gradually reduced in the first direction.

For example, the first body 131 may be a solid of revolution or a non-solid of revolution.

Referring to fig. 24 and the like, the outer wall of the first body 131 is attached to the inner wall of the first receiving chamber 101, and the sectional area of the first receiving chamber 101 is gradually reduced along the first direction; the first body 131 is a rotating body, and the first accommodation chamber 101 is a rotating chamber.

In other examples, the first accommodating chamber 101 may also be a non-rotating chamber.

For example, the outer wall of the first body 131 is attached to the inner wall of the first accommodating chamber 101, and the outer wall of the first body 131 may be partially attached to the inner wall of the first accommodating chamber 101.

Referring to fig. 12, 15, 24, etc., the second sleeve 121 has a tendency to move in a second direction with respect to the first body 131, the second direction being the opposite direction of the first direction; the first sleeve 110 is provided with a first rotary cavity 104, the second sleeve 121 is provided with a first rotary surface 105 matched with the first rotary cavity 104, the second sleeve 121 is rotatably sleeved on the first rotary cavity 104, the cross section of the first rotary cavity 104 is gradually reduced along the second direction, and the cross section of the first rotary surface 105 is gradually reduced along the second direction; the sliding movement of the first sleeve 110 relative to the second member 220 in the second direction is limited, the second sleeve 121 has a tendency to move in the second direction relative to the first sleeve 110, the first sleeve 110 is a tight fit with the second sleeve 121, and the preload member 140 causes the second sleeve 121 to have a tendency to move in the second direction relative to the first sleeve 110.

The above arrangement has an advantage that when the second sleeve 121 has a tendency to move in the second direction, the second sleeve 121 can further press the first sleeve 110, thereby enhancing the rotational damping force between the first sleeve 110 and the second sleeve 121. And the preload member 140 can simultaneously act between the first sleeve 110 and the second sleeve 121, and between the first body 131 and the second sleeve 121, so that the rotary joint structure 100 is compact.

It is understood that the second sleeve 121 has a tendency to move in the second direction relative to the first sleeve 110, which may mean that the second sleeve has a possibility to move in the second direction relative to the first sleeve 110, for example, when the fit of the second sleeve 121 and the first sleeve 110 is slightly loose, the second sleeve is caused to move in the second direction relative to the first sleeve 110, so that the damping force is restored between the first sleeve 110 and the second sleeve 121. The second sleeve 121 has a movement tendency in the second direction relative to the first sleeve 110, and it can also be said that the second sleeve 121 always moves in the second direction relative to the first sleeve 110, and the second sleeve 121 presses the first sleeve 110 in the second direction.

It can be appreciated that there is a tendency for the first sleeve 110 to move relative to the second sleeve 121 in a first direction.

It will be appreciated that the first sleeve 110 and the second sleeve 121 have a tendency to move towards each other.

Illustratively, the first turning cavity 104 is a conical surface or a circular table surface.

Illustratively, the first surface of revolution 105 is a conical surface, a truncated cone surface, or the like.

Illustratively, the second member 220 has a limit sidewall 207, the limit sidewall 207 for limiting the sliding of the first sleeve 110 in the second direction.

In other examples, the first rotating cavity 104 is a rotating cavity with a uniform cross section, such as a cylindrical cavity, and the outer wall surface of the second sleeve 121 is a rotating surface with a uniform cross section, such as a cylindrical surface.

Referring to fig. 12, the second sleeve 121 is circumferentially fixed relative to the first body 131.

It will be appreciated that the circumferential fixation of the second sleeve 121 to the first body 131 may be achieved by any of the following:

1. the first body 131 has a first protrusion 131a, and the first protrusion 131a is clamped in the first gap 102

2. The first body 131 is provided with a second protrusion 122, and the second protrusion 122 is clamped in the first groove 103 of the second sleeve 121.

3. The first body 131 is provided with a second groove, the second sleeve 121 is provided with a third protrusion, and the third protrusion is clamped in the second groove of the first body 131.

Referring to fig. 15, 21, 24, etc., the rotatable connection 100 further includes a preload member 140, the preload member 140 causes the first body 131 to exert a squeezing action on the second sleeve 121, the preload member 140 may act directly or indirectly on the first body 131, e.g., the preload member 140 may act on the second sleeve 121 and the first body 131, the preload member 140 may act on the second member 220 and the first body 131, the preload member 140 may act on the first member 210 and the first body 131, the preload member 140 may act on the first sleeve 110 and the first body 131, etc. The advantage of providing the preload member 140 is that the first body 131 initially has a greater compressive force on the second sleeve 121, resulting in a greater rotational damping force between the second sleeve 121 and the first sleeve 110.

Illustratively, the preload member 140 acts directly or indirectly on the first body 131 and the second sleeve 121.

By way of example, the preload member 140 may be a rivet, the riveting force of which causes the first body 131 to press against the second sleeve 121, such that the second sleeve 121 is in a rotationally damped connection with the first sleeve 110, e.g. the rivet acts on the first body 131 and the second sleeve 121, and in turn e.g. the rivet acts on the second member 220 and the first body 131.

The preload member 140 may be an elastic member, such as a spring, a leaf spring, an elastic string, an elastic clip, etc., the elastic force of which causes the first body 131 to press the second sleeve 121, such as the elastic member acting on the first body 131 and the second sleeve 121, and the elastic member acting on the second member 220 and the first body 131.

For example, the preload member 140 may be a threaded member, the thread force of which causes the first body 131 to press against the second sleeve 121, such that the second sleeve 121 is rotationally locked to the first sleeve 110, e.g. the threaded member acts on the first body 131 and the second sleeve 121, and in turn, the threaded member acts on the first body 131 and the second member 220.

In other implementations, the pressing effect of the first body 131 on the second sleeve 121, for example, the magnitude of the pretightening force of the first body 131 is not adjustable, and the pressing effect of the first body 131 on the second sleeve 121 is achieved by the installation positions of the first body 131 and the second sleeve 121.

Referring to fig. 15, 21, 22, 24, etc., the tightening member 140 is a first screw 140, the tightening force of the first screw 140 to the second sleeve 121 is adjustable, and the first screw 140 includes a shaft 141 and a head 142 disposed at one end of the shaft 141; the rotary connection structure 100 further includes a connection portion 122, the connection portion 122 is disposed on the second sleeve 121, or the connection portion 122 and the second sleeve 121 are integrally connected, the first body 131 has a first fastening hole 106, the rod portion 141 of the first screw 140 passes through the connection portion 122 to be fastened and connected with the first fastening hole 106, and the head portion 142 of the first screw 140 is retained by the connection portion 122. This provides the advantage of facilitating adjustment of the squeezing force of the first body 131 against the second sleeve 121, thereby facilitating the damping force between the first sleeve 110 and the second sleeve 121.

Illustratively, the first screw 140 may be a screw, a threaded rod, or the like, and it is understood that the first fastening hole 106 is a threaded hole.

Illustratively, the connecting portion 122 is integrally connected with the second sleeve 121, and the connecting portion 122 is welded and glued to the second sleeve 121.

Illustratively, the connecting portion 122 functions to block the head 142 of the first screw 140, and the connecting portion 122 may have a plate shape, or the like.

Illustratively, the connecting portion 122 is adjacent to the first receiving cavity 101.

Referring to fig. 15, 17, 19, 21, 22, etc., the rotary connection structure 100 further includes a first connection member 123 and a second connection member 132, the second sleeve 121 is disposed on the first connection member 123, the first connection member 123 is detachably mounted on the second member 220, the second member 220 has a first receiving cavity 201, and the first connection member 123 is received in the first receiving cavity 201; the first body 131 is arranged on the second connecting piece 132, the second connecting piece 132 is detachably arranged on the second member 220, and the second connecting piece 132 is accommodated in the first accommodating cavity 201; the second member 220 has a first positioning post 224a, the first connecting member 123 has a first positioning hole 107a, the second member 220 has a second positioning post 224b, and the first connecting member 123 has a second positioning hole 107b; the second member 220 has a first limit structure 226, the first limit structure 226 axially fixing the first connecting member 123 relative to the first positioning post 224a, the second member 220 has a second limit structure 227, the second limit structure 227 axially fixing the second connecting member 132 relative to the second positioning post 224 b; the second member 220 has a first bearing ring 228, the first bearing ring 228 is used for bearing the first connecting element 123, the first bearing ring 228 is used for fixing the first connecting element 123 circumferentially relative to the first positioning post 224a, the second member 220 has a second bearing ring 229, the second bearing ring 229 is used for bearing the second connecting element 132, and the second bearing ring 229 is used for fixing the second connecting element 132 circumferentially relative to the second positioning post 224 b.

The above arrangement has the advantages that, on one hand, the first positioning column 224a and the second positioning column 224b enable the first main body 131 to have a pressing effect on the second sleeve 121; on the other hand, the first positioning column 224a and the first supporting ring 228 enable the first main body 131 to be fixedly mounted on the second member 220, and the second positioning column 224b and the second supporting ring 229 enable the second sleeve 121 to be fixedly mounted on the second member 220, and in combination with the first main body 131 and the second sleeve 121, the first main body 131 and the second sleeve 121 are sleeved with each other, so that the integrity of the first main body 131 and the second sleeve 121 is better, and the rotational fit of the second sleeve 121 and the first sleeve 110 is more stable; on the other hand, the first connecting member 123 and the second connecting member 132 are accommodated in the first accommodating cavity 201 of the first connecting member 123, so that the rotating connecting structure 100 is more compact.

For example, the first positioning post 224a is sleeved on the first positioning hole 107a and the second positioning post 224b is sleeved on the second positioning hole 107b, so that the first body 131 has a pressing effect on the second sleeve 121.

Illustratively, the second sleeve 121 is detachably or non-detachably disposed on the first connecting member 123, for example, the second sleeve 121 is integrally connected with the first connecting member 123.

Illustratively, the first positioning post 224a is a stretching body, and the first positioning hole 107a is a stretching hole, so that the first positioning post 224a is easily inserted into the first positioning hole 107a, for example, the first positioning hole 107a is a cylindrical hole, and the first positioning post 224a is a cylinder. For another example, the first positioning hole 107a is a non-rotating hole (elliptical hole, polygonal hole, etc.), and the first positioning column 224a is a non-rotating column (elliptical column, polygonal column, etc.).

For example, referring to fig. 21, the first positioning post 224a is in clearance fit with the first positioning hole 107a, which provides the advantage of allowing the second sleeve 121 to have an adjustment space for movement in the second direction relative to the first body 131, i.e., allowing the second sleeve 121 to slide along the first rotation axis when the preload member 140 adjusts the pressing force between the second sleeve 121 and the first body 121.

For example, the second positioning hole 224b is a stretching body, and the second positioning hole 107b is a stretching hole, so that the second positioning hole 224b is easily installed into the second positioning hole 107b, for example, the second positioning hole 107b is a cylindrical hole, and the second positioning hole 224b is a cylinder. For another example, the second positioning hole 107b is a non-rotating hole (elliptical hole, polygonal hole, etc.), and the second positioning post 224b is a non-rotating post (elliptical post, polygonal post, etc.).

In other examples, the second positioning posts 224b are not in clearance fit with the second positioning holes 107 b.

In other implementations, the first connector 123 is detachably mounted to the exterior of the second member 220

In other implementations, the first connector 123 is integrally or detachably mounted to the second connector 132.

Illustratively, the first limit feature 226 can be a protrusion that is insertable into a recess of the first connector 123 such that the first connector 123 is axially fixed relative to the first positioning post 224 a.

Illustratively, the first limit feature 226 may be a recess into which a protrusion of the first connector 123 may be inserted such that the first connector 123 is axially fixed relative to the first positioning post 224 a.

For example, the second position-limiting structure 227 can be a protrusion, which can be inserted into a groove of the second connecting member 132, so that the second connecting member 132 is axially fixed relative to the second positioning post 224 b.

For example, the second position-limiting structure 227 can be a groove, and a protrusion of the second connecting member 132 can be inserted into the groove, so that the second connecting member 132 is axially fixed relative to the second positioning post 224 b.

It is understood that the first ring 228 is shaped to fit the first connector 123, the second ring 229 is shaped to fit the second connector 132, the first ring 228 can be a swivel, and the second ring 229 can be a swivel, for example, the first ring 228 is cylindrical and the second ring 229 is cylindrical.

Illustratively, the first bearing ring 228 circumferentially secures the first connector 123 relative to the first positioning post 224a, it being understood that circumferential securement of the first connector 123 relative to the first positioning post 224a may be achieved solely by the first bearing ring 228.

For example, the second bearing ring 229 circumferentially fixes the second connector 132 relative to the second positioning post 224b, and it is understood that the circumferential fixing of the second connector 132 relative to the second positioning post 224b can be achieved only by the second bearing ring 229.

It is understood that the first retainer ring 228 may also provide axial fixation of the first connector 123 relative to the first positioning post 224a, and the second retainer ring 229 may also provide axial fixation of the second connector 132 relative to the second positioning post 224 b.

In other examples, the first connecting member 123 is sleeved on the first positioning post 224a, the second connecting member 132 is sleeved on the second positioning post 224b, the first main body 131 is sleeved on the first accommodating cavity 101, the first connecting member 123 is tightly fitted with the first positioning post 224a, and the second connecting member 132 is tightly fitted with the second positioning post 224b, so that the pressing movement of the first main body 131 on the second sleeve 121 can be realized only by the installation positions of the first connecting member 123 and the second connecting member 132, or the pressing movement of the first main body 131 on the second sleeve 121 can be realized by the action of the pre-tightening member 140 on the first main body 131 and the second sleeve 121 (for example, the first positioning post 224a and the second positioning post 224b may be slightly deformed).

In other examples, the first connecting element 123 is sleeved on the first positioning post 224a, the second connecting element 132 is sleeved on the second positioning post 224b, the first main body 131 is sleeved on 131 and sleeved on the first accommodating cavity 101, the first connecting element 123 is tightly matched with the first positioning post 224a, and the second connecting element 132 is in clearance fit with the second positioning post 224 b.

In other examples, the first connecting member 123 is sleeved on the first positioning post 224a, the second connecting member 132 is sleeved on the second positioning post 224b, the first main body 131 is sleeved on the first accommodating cavity 101, the first connecting member 123 is in clearance fit with the first positioning post 224a, and the second connecting member 132 is in clearance fit with the second positioning post 224 b.

Referring to fig. 17 to 27, the second member 220 includes a first housing 221, a second housing 222, a first fastening member 223a and a second fastening member 223b, the second housing 222 is detachably mounted to the first housing 221, a first positioning post 224a is disposed on the first housing 221, the first fastening member 223a passes through the second housing 222 and is fastened to the first positioning post 224a, a second positioning post 224b is disposed on the first housing 221, the second fastening member 223b passes through the second housing 222 and is fastened to the second positioning post 224b, the first limiting structure 226 includes a first limiting wall 226a and a second limiting wall 226b, the first limiting wall 226a and the second limiting wall 226b are respectively disposed on the first housing 221 and the second housing 222, the first limiting wall 226a abuts against the first connecting member 123, the second limiting wall 226b abuts against the first connecting member 123, the second limiting structure includes a third limiting wall 227a and a fourth limiting wall 227b, the third and fourth limiting walls 227a and 227b are respectively located on the first and second housings 221 and 222, the third limiting wall 227a abuts against the second connector 132, the fourth limiting wall 227b abuts against the second connector 132, the first support ring 228 includes a first partial ring 228a and a second partial ring 228b, the first partial ring 228a and the second partial ring 228b are respectively located on the first and second housings 221 and 222, when the second housing 222 is separated with respect to the first housing 221, the first connector 123 may be separated from the first partial ring 228a, the first connector 123 may be separated from the second partial ring 228b, and the second support ring 229 includes a third partial ring 229a and a fourth partial ring 229b, the third partial ring 229a and the fourth partial ring 229b are respectively located on the first and second housings 221 and 222, when the second housing 222 is separated with respect to the first housing, the second connector 132 may be separated from the third partial ring 229a, and the fourth partial ring 229b may be separated from the second housing 221. The above arrangement has the advantage of facilitating the mounting and dismounting of the first and

second connectors

123, 132 and thus the first and

second bodies

131, 121. And the first positioning column 224a and the second positioning column 224b are also used for fastening the first casing 221 and the second casing 222, so that the structure of the rotating connecting structure 100 and the second member 220 is more compact.

Illustratively, the first fastening member 223a may be a screw or a rivet, and the second fastening member 223b may be a screw or a rivet, and specifically, the first fastening member 223a is a screw, the first positioning column 224a is correspondingly provided with a screw hole, the first fastening member 223a is in threaded connection with the screw hole of the first positioning column 224a, the second fastening member 223b is a screw, the second positioning column 224b is correspondingly provided with a screw hole, and the second fastening member 223b is in threaded connection with the screw hole of the second positioning column 224 b.

Illustratively, the first positioning post 224a and the second positioning post 224b are respectively located at two sides of the first casing 221.

Illustratively, the first limiting wall 226a, the second limiting wall 226b, the third limiting wall 227a and the fourth limiting wall 227b are inner walls of the first receiving cavity 201.

Illustratively, the first partial ring 228a is a half of the first supporting ring 228, and the second partial ring 228b is a half of the first supporting ring 228, for example, the first supporting ring 228 is a half-rotor, the first partial ring 228a is a half-rotor, and the second partial ring 228b is a half-rotor, specifically, the first partial ring 228a is a half-cylinder, and the second partial ring 228b is a half-cylinder.

It will be appreciated that the first portion of the loop 228a is open and the second portion of the loop 228b is open, and that the first connector 123 can be disengaged from the first portion of the loop 228a and the first connector 123 can be disengaged from the second portion of the loop 228b after the second housing 222 is separated relative to the first housing 221.

It will be appreciated that the third portion of the loop 229a is open and the fourth portion of the loop 229b is open, and that the second connector 132 can be disengaged from the third portion of the loop 229a and the second connector 132 can be disengaged from the fourth portion of the loop 229b after the second housing 222 is separated relative to the first housing 221.

Illustratively, the third partial ring 229a is a half of the second supporting ring 229, the third partial ring 229a is another half of the second supporting ring 229, for example, the second supporting ring 229 is in a shape of a half-circle, the third partial ring 229a is in a shape of a half-circle, the fourth partial ring 229b is in a shape of a half-circle, specifically, the third partial ring 229a is in a shape of a half-cylinder, and the fourth partial ring 229b is in a shape of a half-cylinder.

In other examples, the second casing 222 is detachably mounted to the first casing 221, and the second casing 222 is connected to the first casing 221 by means of a snap. For another example, the first fastener 223a passes through the second casing 222 to be fastened with other parts of the first casing 221, and for another example, the second fastener 223b passes through the second casing 222 to be fastened with other parts of the first casing 221.

Further, the first housing 221 is further provided with a third positioning column 224c and a fourth positioning column 224d, the second member 220 further includes a third fastening member 223c and a fourth fastening member 224d, the third fastening member 223c passes through the second housing 222 to be fastened with the third positioning column 224c, and the fourth fastening member 224d passes through the second housing 222 to be fastened with the third positioning column 224 c. The third fastening member 223c may be a screw, a rivet, and the like, the fourth fastening member 224d may be a screw, a rivet, and the like, specifically, the third fastening member 223c is a screw, the third positioning column 224c is provided with a corresponding screw hole, the third fastening member 223c penetrates through the second housing 222 to be in threaded connection with the third positioning column 224c, the fourth fastening member 224d is a screw, the fourth positioning column 224d is provided with a corresponding screw hole, and the fourth fastening member 224d penetrates through the second housing 222 to be in fastened connection with the fourth positioning column 224 d.

In other examples, the third fastener 223c passes through the second casing 222 to be fastened with other parts of the first casing 221, and the fourth fastener 224d passes through the second casing 222 to be fastened with other parts of the first casing 221.

Referring to fig. 1 to 11, the embodiment of the present invention further provides a photographing bracket, the photographing bracket includes a connecting arm 200 and a clamp 600, the clamp 600 is used for mounting an electronic terminal, the connecting arm 200 includes a first arm 210, a second arm 220 and a rotating connection structure 100, the first arm 210 is a first member 210, the second arm 220 is a second member 220, and the clamp 600 is mounted on the first arm 210.

The shooting support is used for supporting the electronic terminal to assist shooting, and the shooting support is used for self-shooting, shooting other people and other objects and the like.

Illustratively, the electronic terminal may be a cell phone, a tablet, a camera, or the like.

By way of example, the clamp 600 refers to a device for mounting or clamping an electronic terminal, e.g., the clamp 600 may be a clamping member, e.g., the clamp 600 may be a part having a first mounting interface, which may be a threaded opening, a threaded post, a boot opening, a boot head, etc., and accordingly, the electronic terminal has a second mounting interface, which may be a threaded post, a threaded opening, a boot head, a boot opening, etc.

Illustratively, the clamp 600 is a clamp, and the clamp 600 can adjust the width of the clamp to accommodate different sized electronic terminals.

Illustratively, the fixture 600 has a magnetic portion for magnetically attracting the electronic terminal, so as to achieve loading of the electronic terminal.

Illustratively, the holder 600 has a suction cup for sucking the electronic terminal, the suction cup may be an air bag having an opening, and the suction cup evacuates air to be sucked to the electronic terminal, thereby loading the electronic terminal.

For example, the clamp 600 may fixedly mount the first arm 210, and the clamp 600 may rotatably mount the first arm 210.

Illustratively, when the photographing bracket is used, the first arm body 210 of the connecting arm 200 can be held by hand to photograph.

For example, when the photographing bracket is used, the photographing bracket may be mounted on a supporting rod 300 or a base 400 to perform photographing.

It can be understood that the first arm 210 is rotatable relative to the second arm 220, and the angle of the first arm 210 relative to the second arm 220 can be adjusted, thereby adjusting the shooting angle of the electronic terminal.

It is understood that the first arm 210 may be held to the second arm 220 such that the first arm 210 is held at an angle with respect to the second arm 220, thereby facilitating photographing of the electronic terminal.

Referring to fig. 11, the photographing bracket further includes a support rod 300, the connecting arm 200 is rotatably mounted on the support rod 300, and the second arm 220 is rotatably mounted on the support rod 300; initially, the usage direction of the electronic terminal points to the first side space 203a of the second arm 220, and the first arm 210 rotates relative to the second arm 220 so that the usage direction of the electronic terminal points to the second side space 203b of the second arm 220, where the first side space 203a is opposite to the second side space 203 b; the second arm 220 has a first rotational degree of freedom and a second rotational degree of freedom with respect to the support rod 300, the second arm 220 rotates circumferentially with respect to the support rod 300 when the second arm 220 has the first rotational degree of freedom with respect to the support rod 300, and the use direction of the electronic terminal is changed when the second arm 220 has the second rotational degree of freedom with respect to the support rod 300, and the second arm 220 can be held by the support rod 300; the shooting bracket further comprises a base 400, wherein the base 400 is used for supporting the supporting rod 300, the base 400 is a multi-foot supporting piece, the multi-foot supporting piece can be supported on a supporting surface when being opened, and the multi-foot supporting piece can be folded on the supporting rod 300 to form a holding body which can be held by a user; the supporting rod 300 comprises a rod main body 310 and a connector 320, wherein the rod main body 310 is telescopic, the connector 320 is rotatably mounted on the rod main body 310, the connector 320 is circumferentially rotatable relative to the rod main body 310 so that the second arm body 220 has a first degree of freedom of rotation relative to the supporting rod 300, the second arm body 220 is rotatably mounted on the connector 320 so that the second arm body 220 has a second degree of freedom of rotation relative to the supporting rod 300, the second arm body 220 can be held on the connector 320, and when the second arm body 220 rotates relative to the connector 320, the use direction of the electronic terminal is changed; the clamp 600 is rotatably mounted to the first arm 210, and when the clamp 600 rotates relative to the first arm 210, the radial direction of the electronic terminal changes, and the clamp 600 can be held by the first arm 210; the shooting bracket further comprises a handle 500, wherein the handle 500 is in spherical hinge connection with the connector 320, or the handle 500 rotates around a holding axis relative to the connector 320, and the included angle between the holding axis and the axis of the rod main body 310 is greater than or equal to 75 degrees and smaller than or equal to 90 degrees; the second arm 220 is provided with a receiving groove 204, the first arm 210 can be received in the receiving groove 204, the clamp 600 has a back surface opposite to the electronic terminal, and after the first arm 210 is received in the receiving groove 204, the back surface 601 of the clamp 600 is close to or attached to the surface of the second arm 220; the second arm 220 has a first surface 205a and a second surface 205b, the first surface 205a is opposite to the second surface 205b, the first surface 205a is provided with a light emitting portion 2211, the light emitted by the light emitting portion 2211 illuminates the first side space 203a of the second arm 220, the second surface 205b is provided with a receiving groove 204, after the first arm 210 is received in the receiving groove 204, the back 601 of the clamp 600 is close to or attached to the second surface 205b of the second arm 220; the clamp 600 includes a clamping body 610, a first clamping portion 620 and a second clamping portion 630, the first clamping portion 620 is rotatably mounted on the clamping body 610, the first clamping portion 620 is receivable in the clamping body 610, the second clamping portion 630 is rotatably mounted on the clamping body 610, and the second clamping portion 630 is receivable in the clamping body 610; when the shooting support is in the storage state, the rod main body 310 is in the contraction state, the multi-foot support is folded on the support rod 300 to form a holding body, the second arm 220 is folded on the holding body, the first surface 205a is close to or attached to the holding body, the first arm 210 is stored in the storage groove 204, the back 601 of the clamp 600 is close to or attached to the second surface 205b of the second arm 220, the first clamping portion 620 is stored in the clamping main body 610, the second clamping portion 630 is stored in the clamping main body 610, the handle 500 is folded on the holding body, and the handle 500 is close to or attached to the holding body.

The advantage of above-mentioned setting is, when taking the support and being in the state of accomodating, occupies smallly, is convenient for deposit this and takes the support.

It is understood that the second arm body 220 rotatably mounts the support rod 300 such that the connecting arm 200 is rotatably mounted to the support rod 300.

Illustratively, the support rod 300 may be a telescopic rod or a fixed length rod.

In other examples, the second arm 220 is fixedly mounted to the support rod 300.

It is understood that, for the arm body or the rod-like object, the space surrounding the arm body may be divided into a side space and an end space, when the arm body extends in the left-right direction, the side space of the arm body includes an upper side space, a lower side space, a front side space, and a rear side space, and the end space of the arm body includes a left end space and a right end space; when the arm body extends along the up-down direction, the side space of the arm body comprises a front side space, a rear side space, a left side space and a right side space, and the end space of the arm body comprises an upper end space and a lower end space; when the arm body extends along the fore-and-aft direction, the side space of the arm body includes an upper side space, a lower side space, a left side space, and a right side space, and the end space of the arm body includes a front end space and a rear end space. For example, the side space of the arm body may be a space on the front side of the arm body, or may be a space on the oblique side of the arm body; the end space of the arm may be a space directly facing the end of the arm or a space diagonally facing the end of the arm.

For example, the first side space 203a may be a front side space or an inclined side space of the second arm 220, and the second side space 203b may be a front side space or an inclined side space of the second arm 220.

It is understood that 1 arbitrarily moving rigid body has 3 translational degrees of freedom and 3 rotational degrees of freedom, a and B are rotationally coupled, and a has 1 rotational degree of freedom or 3 rotational degrees of freedom with respect to B.

It is understood that the first arm body 210 having the first rotational degree of freedom with respect to the second arm body 220 means that the first arm body 210 has a certain degree of freedom with respect to the second arm body 220, specifically, the first rotational degree of freedom is a degree of freedom with which the second arm body 220 rotates circumferentially with respect to the support rod 300.

It is understood that the second degree of freedom of rotation means that the first arm 210 has a certain degree of freedom with respect to the second arm 220.

It is understood that the usage direction of the electronic terminal is an axial direction along the lens, or an outer normal direction of the display screen of the electronic terminal.

It will be appreciated that the second arm 220 rotates circumferentially relative to the support rod 300, and the second arm 220 orbits around the support rod 300 (or an extended portion thereof). For example, the support rod 300 has a rod axis about which the second arm 220 can rotate.

For example, the usage direction of the electronic terminal may be a forward direction, a backward direction, a left direction, a right direction, a pitch direction, an arbitrary direction, and the like, for example, the usage direction is a lens orientation of the electronic terminal, the electronic terminal may take a downward shot, a pitch shot, a left shot, a right shot, a forward shot, a backward shot, an arbitrary direction, and the like, the usage direction may be a display orientation of a display screen of the electronic terminal, and the display orientation of the electronic terminal may be a display orientation of a pitch display, a left display, a right display, a front display, a back display, an arbitrary direction display, and the like.

Illustratively, when the second arm 220 is rotatable around the second rotation axis relative to the connection head 320, the angle between the second rotation axis and the rod axis is between 75 ° and 90 °, and may be 75 °, 80 °, 90 °, and so on.

Illustratively, the second axis of rotation is parallel to the first axis of rotation.

Illustratively, the base 400 is a multi-legged support having a plurality of legs 430, such as a three-legged support, a four-legged support, etc., and the multi-legged support can be supported on a support surface, which can be planar, non-planar, etc. For example, the multi-foot support includes a sliding portion 410, at least 3 connecting rods 420 and at least 3 feet 430, at least 3 connecting rods 420 correspond to at least 3 feet 430 respectively, the sliding portion 410 is slidably mounted on the supporting rod 300, one end of each connecting rod 420 is rotatably connected to the corresponding foot 430, the other end of each connecting rod 420 is rotatably connected to the corresponding supporting rod 300, when the sliding portion 410 slides along the corresponding supporting rod 300, the plurality of feet 430 are opened or closed relative to the corresponding supporting rod 300, and the feet 430 can be feet with a fixed length, or the feet 430 can be telescopic, for example, the feet 430 include a first support 431 and a second support 432, the second support 432 is slidably sleeved on the first support 431, the connecting rods 420 are rotatably connected with the second support 432, and the second support 432 has friction with the first support 431 so that the second support 432 can be positioned on the first support 431, so that the feet 430 can support the corresponding supporting rods 300; when the legs 430 are folded on the supporting rod 300, the link 420 is accommodated between the legs 430 and the supporting rod 300.

For example, the multi-foot supporting member can be folded into the supporting rod 300 to form a holding body, the holding body can be any shape to be held by a user, and the holding body can be a cylindrical shape, for example, the holding body is cylindrical.

In other examples, the base 400 is a flat plate, and can be placed on a desktop or a floor to support the electronic terminal.

In other examples, the base 400 is a suction cup that can be attached to a surface to support the electronic terminal.

In other examples, the base 400 is a clip that can be clipped to an object to support the electronic terminal.

In other examples, the base 400 is a magnetic part, which can be attracted to a ferromagnetic body to support the electronic terminal.

Other examples, the base 400 may be held by a user's hand to enable support of the electronic terminal.

Other examples include stem body 310 of fixed length.

In other examples, the connector 320 is fixedly mounted to the lever body 310.

For example, the part a is rotatably mounted to the part B, and the part a can be held to the part B, for example, by the hand force of the user. For example, a and B are directly or indirectly interference fit to achieve a being held at B. For example, a is fastened to B by a fastener, or a is retained to B by a retaining structure, and a is retained to B by the fastener or the retaining structure during rotation of a relative to B, and the fastener may be a threaded member or a rivet. For example, a damping ring is provided between a and B, which may be made of a flexible material, so that a may be held at B, and part a and part B may refer to the two parts in this patent application that rotate and may be held in relation to each other.

Illustratively, the second arm body 220 has two first extension arms 2210, the connector 320 is located between the two first extension arms 2210, for example, a fifth fastener 330 passes through the two first extension arms 2210 and the connector 320, the fifth fastener 330 can fasten the first extension arms 2210 to the connector 320, the second arm body 220 can be held to the connector 320, and the fifth fastener 330 can be an adjustable screw. Adjusting the tightening force of the fifth fastening member 330 can adjust the damping force between the second connecting arm 200 and the connecting head 320.

Illustratively, the clamp 600 is provided with a first rotating portion 640, the first arm 210 is provided with a second rotating portion 211, the first rotating portion 640 is rotatably mounted on the second rotating portion 211, and a first damping ring 660 is provided between the first rotating portion 640 and the second rotating portion 211, more specifically, the first rotating portion 640 is a cylindrical groove, the second rotating portion 211 is a cylindrical protrusion, and the second rotating portion 211 is accommodated in the first rotating portion 640, or the first rotating portion 640 is a cylindrical protrusion, the second rotating portion 211 is a cylindrical groove, and the first rotating portion 640 is accommodated in the second rotating portion 211. In order to avoid the first rotating part 640 from being separated from the second rotating part 211, the camera support further includes a sixth fastening member 650, the sixth fastening member 650 passes through the first arm 210 and is fastened to the clamp 600, and the sixth fastening member 650 may be a screw member or a rivet member (the fastening members mentioned in this application may be screw members or rivet members).

It is understood that when the user grips the handle 500 to use the photographing bracket, the handle 500 may activate the function of the photographing stabilizer.

Illustratively, the grip axis is at an angle of 75 °, 80 °, 85 °, 90 °, etc. to the axis of the lever body 310.

It can be understood that the second arm 220 is provided with the receiving slot 204, so that the volume occupied by the shooting bracket after being received is smaller.

Illustratively, the second surface 205b is a flat surface, the back surface 601 of the clip 600 is a flat surface, the curved surface of the second surface 205b, and the back surface 601 of the clip 600 is a suitably curved surface, for example, the second surface 205b is an arc surface, and the back surface is a suitably curved surface.

Illustratively, the back 601 of the clip 600 is proximate or near the second surface 205b, and may refer to a portion of the back near or near the second surface 205b.

Illustratively, the light emitted by the light emitting portion 2211 is direct light or scattered light, for example, a lamp bead, a control circuit and a power supply are disposed in the second arm 220, the lamp bead is electrically connected to the control circuit, the lamp bead is electrically connected to the power supply, the power supply is configured to supply power to the lamp bead, the control circuit is configured to control the lamp bead to emit light, and the light emitted by the lamp bead is emitted after passing through the light emitting portion 2211.

As can be appreciated, the light emitted by the light emitting portion 2211 illuminates the first side space 203a so that the electronic terminal can photograph the object in the first side space 203a.

Illustratively, the first arm 210 is shaped to fit into the receiving slot 204, and when the first arm 210 is received in the receiving slot 204, the first arm 210 is aligned with the second surface 205b, for example, the first arm 210 has a third surface 209, the clamp 600 is located on the third surface 209, and when the first arm 210 is received in the receiving slot 204, the third surface 209 is aligned with the second surface 205b.

For example, when the first arm 210 is received in the receiving slot 204, the third surface 209 is close to the second surface 205b.

For example, the first arm 210 is received in the receiving groove 204, and the first arm 210 is partially received in the receiving groove 204, the first arm 210 has a protruding portion protruding from the second surface 205b, and the protruding portion has a maximum thickness of less than or equal to 30% of the thickness of the first arm 210 (e.g., 10%, 20%, 30%, etc.), and a maximum thickness of less than or equal to 10% of the thickness of the second arm (e.g., 3%, 6%, 9%, 10%, etc.), for example, when the first arm 210 is received in the receiving groove 204, the third surface 209 protrudes relative to the receiving groove 204, a maximum distance between the third surface 209 and the second surface 205 is less than or equal to 30% of the thickness of the first arm 210 (e.g., 10%, 20%, 30%, etc.), and a maximum distance between the third surface 209 and the second surface 205 is less than or equal to 10% of the thickness of the second arm (e.g., 3%, 6%, 9%, 10%, etc.), that is, the third surface is close to the second surface 205b. It is understood that the third surface 209 and the fourth surface 205 are both finite surfaces, and when the third surface 209 and the second surface 205 are non-parallel, the maximum distance from any point of the third surface 209 to any point of the second surface 205 is the maximum distance between the third surface 209 and the second surface 205.

Illustratively, the gripping body 610 may be elastically stretchable, or the gripping body 610 may not be elastically stretchable, e.g., the gripping body 610 is a unitary structure.

Illustratively, the clamping body 610 includes a first clamp 611, a second clamp 612, the first clamp 611 being slidably mounted to the second clamp 612, and a resilient assembly, which may be a spring or the like, that allows the first clamp 611 to resiliently telescope relative to the second clamp 612, thereby accommodating electronic terminals of different sizes.

Illustratively, the clamping main body 610 is provided with a first clamping receiving groove 602 and a second clamping receiving groove 603, the first clamping portion 620 is rotatably mounted in the first clamping receiving groove 602, when the first clamping portion 620 clamps the electronic terminal, the first clamping portion 620 abuts against a sidewall of the first clamping receiving groove 602, and the first clamping portion 620 can be received in the first clamping receiving groove 602; the second clamping portion 630 is rotatably mounted in the second clamping receiving slot 603, when the second clamping portion 630 clamps the electronic terminal, the second clamping portion 630 abuts against a sidewall of the second clamping receiving slot 603, and the second clamping portion 630 can be received in the second clamping receiving slot 603.

Illustratively, the electronic terminal breadth direction may refer to a shooting breadth direction or a display breadth direction of the electronic terminal, for example, the shooting breadth direction may refer to a banner, a vertical, a slant, etc., and the display breadth direction may refer to a banner, a vertical, a slant, etc.

Illustratively, the camera of the electronic terminal includes a front camera and a rear camera, the front camera and the display screen are located on the same side of the electronic terminal, the rear camera and the display screen are located on opposite sides of the electronic terminal, and when the electronic terminal is mounted on the fixture 600, the front camera faces the back 601 of the fixture 600, or the rear camera faces the back 601 of the fixture 600.

For example, in the initial state, the connecting arm 200 is in the vertical state, the first arm 210 is unfolded relative to the second arm 220, the front camera can shoot the first side space 203a of the second arm 220, and the rear camera can shoot the second side space 203b of the second arm 220 (or the front camera shoots the second side space 203b of the second arm 220 and the rear camera shoots the first side space 203a of the second arm 220).

For example, when the imaging stand is in a certain use state, the first arm 210 is accommodated in the second arm 220, the front camera can image the second side space 203b of the second arm 220, and the rear camera can image the first side space 203a of the second arm 220 (or the front camera can image the first side space 203a of the second arm 220, and the rear camera can image the second side space 203b of the second arm 220).

For example, referring to fig. 6, when the imaging stand is in a certain use state, the second arm 220 extends toward the side space of the support rod 300, so that the objects around the support rod 300 can be imaged conveniently, the lower object can be imaged conveniently by the rear camera, and the upper object can be imaged upward by the front camera (or the lower object can be imaged downward by the front camera, and the upper object can be imaged upward by the rear camera).

It can be understood that, for a rod-shaped object, the space surrounding the rod body may be divided into a side space and an end space, when the rod body extends in the left-right direction, the side space of the rod body includes an upper side space, a lower side space, a front side space, and a rear side space, and the end space of the rod body includes a left end space and a right end space; when the rod body extends along the up-down direction, the side space of the rod body comprises a front side space, a rear side space, a left side space and a right side space, and the end space of the rod body comprises an upper end space and a lower end space; when the body of rod extends along the fore-and-aft direction, the side space of the body of rod includes upside space, downside space, left side space, right side space, and the end space of the body of rod includes front end space and rear end space. For example, the side space of the rod body may be a space on the right side of the rod body, or may be a space on the oblique side of the rod body; the end space of the rod body can be a space right opposite to the end part of the rod body or a space obliquely opposite to the end part of the rod body.

Illustratively, the second arm 220 includes a first partial arm 220a and a second partial arm 220b, the second partial arm 220b includes two first extension arms 2210, the first partial arm 220a is provided with a light emitting portion 2211, and the receiving groove 204 is provided in the first partial arm 220a. The first partial arm 220a is rotatable relative to the second partial arm 220b about a third axis of rotation, which is at an angle of 75 ° -90 ° (which may be 75 °, 80 °, 85 °, 90 °, etc.) to the first axis of rotation, and at an angle of 75 ° -90 ° (which may be 75 °, 80 °, 85 °, 90 °, etc.) to the second axis of rotation. When the first partial arm 220a is rotated about the third rotation axis with respect to the second partial arm 220b, the irradiation direction of the light emitting portion 2211 is changed, and the use direction of the electronic terminal is changed.

Illustratively, the first partial arm 220a may be held by the second partial arm 220b, the first partial arm 220a has a third rotation portion 2212, the second partial arm 220b has a fourth rotation portion 2213, the third rotation portion 2212 is rotatably mounted to the fourth rotation portion 2213, a second damping ring 2214 is disposed between the third rotation portion 2212 and the fourth rotation portion 2213, more specifically, the third rotation portion 2212 is a cylindrical groove, the fourth rotation portion 2213 is a cylindrical protrusion, the fourth rotation portion 2213 is accommodated in the third rotation portion 2212, or the third rotation portion 2212 is a cylindrical protrusion, the fourth rotation portion 2213 is a cylindrical groove, and the third rotation portion 2212 is accommodated in the fourth rotation portion 2213. To prevent the third rotation portion 2212 from being separated from the fourth rotation portion 2213, the second arm 220 further includes a seventh fastening member 2215, the seventh fastening member 2215 may be a screw or a rivet, and the seventh fastening member 2215 is fastened to the second arm 220b through the first arm 220a.

Other examples, the second arm 220 includes only the first partial arm 220a.

Illustratively, the first casing 221 includes a main casing 221a and a sub-casing 221b, the sub-casing 221b is detachably disposed on the main casing 221a, the first sub-ring 228a and the third sub-ring 229a are disposed on the sub-casing 221b, the second member 220 is provided with an operation opening 206, the sub-casing 221b is used for closing the operation opening 206, the position of the operation opening 206 corresponds to the seventh fastening member 2215, the seventh fastening member 2215 can be a screw, and the operation opening 206 is disposed to facilitate the operation of the seventh fastening member 2215 by work, and the sub-casing 221b can be used for covering the operation opening 206.

Illustratively, the sub-housing 221b is bonded, welded, or snapped to the main housing 221a.

Illustratively, the first housing 221 and the sub-housing 221b are integrally formed with the main housing 221a.

Referring to fig. 27, and particularly to fig. 15, 21, 24, etc., an embodiment of the present invention further provides a rotary connection structure 100 for connecting a first member 210 and a second member 220 of a photographing bracket, including a first sleeve 110 and a second body 124, wherein the first sleeve 110 is disposed on the first member 210 of the photographing bracket, the first sleeve 110 has a first rotation cavity 104, and a cross section of the first rotation cavity 104 is gradually reduced along a second direction; the second body 124 is disposed on the second member 220 of the photographing bracket, the second body 124 is rotatably sleeved on the first rotation cavity 104 of the first sleeve 110, the second body 124 has a first rotation surface 105 adapted to the first rotation cavity 104, and a cross section of the first rotation surface 105 is gradually reduced along the second direction; the second body 124 has a tendency to move in a second direction relative to the first sleeve 110 to cause the first surface of revolution 105 to tightly fit the first cavity of revolution 104, thereby enabling the first member 210 to be retained to the second member 220.

This has the advantage that the rotational connection structure 100 achieves the rotational damping connection of the first member 210 and the second member 220 by the tight fit of the second body 124 and the first sleeve 110, and since the second body 124 has a movement tendency along the second direction, and the cross section of the first rotation cavity 104 along the second direction is gradually reduced, the cross section of the first rotation surface 105 along the second direction is gradually reduced, so that the first rotation surface 105 and the first rotation cavity 104 are tightly fitted.

It will be appreciated that the second body 124 has a tendency to move in the second direction relative to the first sleeve 110, which may mean that the second sleeve has a possibility of moving in the second direction relative to the first sleeve 110, for example, when the second body 124 is slightly loose from the first sleeve 110, the second sleeve is caused to move in the second direction relative to the first sleeve 110, thereby restoring the damping force between the first sleeve 110 and the second body 124. The second body 124 has a tendency to move in the second direction relative to the first sleeve 110, which can also mean that the second body 124 always moves in the second direction relative to the first sleeve 110, and the second body 124 presses the first sleeve 110 in the second direction.

Illustratively, the first sleeve 110 is fixedly disposed on the first member 210, the second body 124 is fixedly disposed on the second member 220, and the second body 124 and the second member 220 as a whole have a tendency to move in the second direction relative to the first member 210.

Illustratively, the first sleeve 110 is fixedly disposed on the first member 210, the second body 124 is slidably disposed on the second member 220 along a first rotational axis, the first sleeve 110 is limited from sliding relative to the second member 220 in a second direction, and the second body 124 has a tendency to move relative to the first sleeve 110 in the second direction.

It will be appreciated that the first sleeve 110 has a tendency to move in a first direction relative to the second body 124, the first direction being opposite the second direction.

Illustratively, the first turn cavity 104 is a conical cavity or a truncated cone cavity, and the first turn surface 105 is a conical surface or a truncated cone surface.

It will be appreciated that the tight fit of the first swivel cavity 104 with the first swivel face 105 is an interference fit of the first swivel cavity 104 with the second body 124.

It will be appreciated that the tight fit of the first sleeve 110 and the second body 124 may enable the first member 210 to be retained to the second member 220.

Illustratively, when the fit between the first sleeve 110 and the second body 124 is relaxed, the second body 124 moves in the second direction relative to the first sleeve 110 such that the damping force between the first sleeve 110 and the second body 124 is restored.

Illustratively, the second body 124 has a tendency to move relative to the first sleeve 110 due to the mounting position of the first sleeve 110 and the second body 124, or the preload member 140 is disposed between the first sleeve 110 and the second body 124 such that the second body 124 has a tendency to move relative to the first sleeve 110.

Referring to fig. 12, 15, etc., the second body 124 rotates relative to the first sleeve 110 about a first axis of rotation, with the second direction being along the first axis of rotation.

Referring to fig. 12, 15, etc., the first rotating cavity 104 is a conical cavity or a truncated cone cavity, and the first rotating surface 105 is a conical surface or a truncated cone surface.

Referring to fig. 12, 15, 19, etc., the first sleeve 110 is limited in sliding movement in the second direction relative to the second member 220.

Illustratively, the second member 220 has a limit sidewall 207, the limit sidewall 207 is used for limiting the sliding of the first sleeve 110 in the second direction, and when the first sleeve 110 rotates relative to the second body 124, the limit sidewall 207 also abuts against the first sleeve 110.

Referring to fig. 12, 15, etc., the rotatable connection 100 further includes a preload member 140, the preload member 140 causing the second body 124 to have a tendency to move in a second direction relative to the first sleeve 110.

Illustratively, the preload member 140 acts directly or indirectly on the second body 124 and the first sleeve 110 such that the second body 124 has a tendency to move in the second direction relative to the first sleeve 110.

For example, the preload member 140 may be a rivet, which acts on the second body 124 and the first sleeve 110, and whose riveting force causes the second body 124 to move toward the first sleeve 110 in the second direction.

For example, the preload member 140 may be an elastic member acting on the second body 124 and the first sleeve 110, such as an elastic member acting directly on the second member 220 and the second body 124, or an elastic member acting directly on the first sleeve 110 and the second member 220 or the first sleeve 110.

Illustratively, the preload member 140 may also be a threaded member that acts on the second body 124 and the first sleeve 110.

In other examples, the rotatable connecting structure 100 is not provided with the preload member 140, and the second sleeve 121 and the first sleeve 110 are tightly fitted by properly arranging the installation positions of the second body 124 and the first sleeve 110. For example, the second body 124 is fixedly disposed on the second member, and the first sleeve 110 abuts against the limit sidewall 207 of the second member in the second direction, so as to achieve a tight fit between the second body 124 and the first sleeve 110. For another example, the second body 124 is disposed on the first connecting member 123, the first connecting member 123 is sleeved on the first positioning post 224a, the first connecting member 123 is tightly fitted with the first positioning post 224a, and the first sleeve 110 abuts against the limiting sidewall 207 of the second member in the second direction, so as to achieve the tight fit between the second body 124 and the first sleeve 110.

Referring to fig. 15 and the like, the preload member 140 is a first screw member 140, the fastening force of the first screw member 140 to the second body 124 is adjustable, and the adjustment portion of the first screw member 140 may be a linear groove, a cross groove, a quincunx groove, a polygonal column, a cross column, a linear column, or the like.

Referring to fig. 12 and 15, the rotating connection structure 100 further includes a first body 131, the first body 131 is disposed on the second member 220, the second body 124 includes a second sleeve 121 and a connection portion 122 disposed on the second sleeve 121, the second sleeve 121 has a first receiving cavity 101, the first body 131 is sleeved on the first receiving cavity 101, the first body 131 fills the first receiving cavity 101, and the first screw 140 passes through the connection portion 122 and is fastened to the first body 131.

The advantage of the first body 131 filling the first receiving cavity 101 is that the second sleeve 121 is prevented from deforming due to the tight fit between the second sleeve 121 and the first sleeve 110, and the first body 131 is also used for connecting with the preload member 140, so that the rotatable connecting structure 100 is compact.

Illustratively, the first body 131 is circumferentially fixed relative to the second body 124 about the first axis of rotation.

Referring to fig. 15, 22, 24, etc., the rotating connecting structure 100 further includes a first connecting member 123 and a second connecting member 132, the second body 124 is provided on the first connecting member 123, the first connecting member 123 is detachably mounted on the second member 220, the second member 220 has a first receiving cavity 201, and the first connecting member 123 is received in the first receiving cavity 201; the first body 131 is disposed on the second connecting member 132, the second connecting member 132 is detachably mounted on the second member 220, and the second connecting member 132 is accommodated in the first accommodating chamber 201.

Referring to fig. 12, 15, 24, etc., the second sleeve 121 is provided with the first gap 102 therethrough, and the first body 131 has a tendency to move in a first direction relative to that of the second sleeve 121 so that the second sleeve 121 has a tendency to expand outwardly to achieve a tight fit of the second sleeve 121 with the first sleeve 110.

In other examples, the first body 131 is a stretching body, the first accommodating cavity 101 is a matching stretching cavity, and the first body 131 has no expanding effect on the second sleeve 121.

Referring to fig. 12, 15, 24, etc., the first screw 140 is fixedly coupled with the second member 220 through the second body 124.

Other examples include a solid structure for the second body 124.

Referring to fig. 11, the embodiment of the present invention further provides a photographing stand, the photographing stand includes a connection arm 200 and a clamp 600, the clamp 600 is used for mounting an electronic terminal, the connection arm 200 includes a first arm 210, a second arm 220 and a rotating connection structure 100, the first arm 210 is a first member 210, the second arm 220 is a second member 220, and the clamp 600 is mounted on the first arm 210.

Referring to fig. 1 to 27, the embodiment of the present invention further provides a connecting arm 200, the connecting arm 200 is used for mounting a clamp 600, the clamp 600 is used for mounting an electronic terminal, the connecting arm 200 includes a first arm 210 and a second arm 220, the first arm 210 is rotatably mounted on the second arm 220, the second arm 220 is provided with a receiving slot 204, and the first arm 210 can be received in the receiving slot 204.

The above arrangement has an advantage that the first arm 210 can be received in the receiving groove 204 of the second arm 220 when the connecting arm 200 is not in use, so that the occupied volume of the connecting arm 200 becomes small.

Illustratively, the clamp 600 is mounted to the first arm 210, or the clamp 600 is mounted to the second arm 220.

Illustratively, the first arm 210 is ball-hinged to the second arm 220, the first arm 210 has three rotational degrees of freedom relative to the second arm 220, the first arm 210 is shaft-hinged to the second arm 220, and the first arm 210 has one rotational degree of freedom relative to the second arm 220.

Referring to fig. 7, 9, 15, 22, etc., the connecting arm 200 further includes a rotating connecting structure 100, the rotating connecting structure 100 includes a first rotating member 110 and a second rotating member 120 which are rotatably engaged with each other, the first rotating member 110 is disposed on the first arm 210, the second rotating member 120 is disposed on the second arm 220, the second arm 220 is further provided with a first rotating cavity 208 communicated with the accommodating groove 204, the first rotating member 110 is disposed in the first rotating cavity 208, and the first arm 210 is bent; the clamp 600 is mounted to the first arm 210.

For example, the bent portion of the first arm 210 may be a bevel transition or a rounded transition.

Illustratively, the first rotating member 110 is loosely or tightly fitted with the second rotating member 120.

Illustratively, the first rotating member 110 is ball-hinged or shaft-hinged to the second rotating member 120.

Illustratively, the first rotating member 110 is sleeved on the second rotating member 120, or the second rotating member 120 is sleeved on the first rotating member 110.

For example, the first rotating member 110 is a first sleeve 110, the second rotating member 120 is a shaft-like structure adapted to the first sleeve 110, the shaft-like structure may be sleeved on the first sleeve 110, the second rotating member 120 may be an integral structure, or the second rotating member 120 may be a separate structure, for example, the second rotating member 120 includes a first body 131, a second sleeve 121, a first connecting member 123, a second connecting member 132, and the like.

Illustratively, the first rotating member 110 is detachably or non-detachably disposed on the first arm 210, and the second rotating member 120 is detachably or non-detachably disposed on the second arm 220.

Illustratively, the first rotating member 110 is axially fixed relative to the second rotating member 120 along the first axis of rotation, e.g., the second arm 220 has two limiting side walls 207, the first rotating member 110 is located between the two limiting side walls 207 such that the first rotating member 110 is axially fixed relative to the second rotating member 120, and the two limiting side walls 207 are located on both sides of the first rotating cavity 208.

Referring to fig. 9, 11, 27, etc., the second arm 220 has a second surface 205b, the receiving groove 204 is connected to the second surface 205b, the first arm 210 has a third surface 209, after the first arm 210 is received in the receiving groove 204, the third surface 209 of the first arm 210 is aligned with the second surface 205b, and the third surface 209 is close to the second surface 205b. This arrangement has the advantage that the first arm 210 is more compact after being received in the second arm 220.

Illustratively, the second surface 205b and the third surface 209 are both planar surfaces, and alignment of the third surface 209 with the second surface 205b may mean that the third surface 209 and the second surface 205b are in the same plane.

For example, the second surface 205b and the third surface 209 are part of a resolved curved surface, and the third surface 209 aligned with the second surface 205b may mean that the second surface 205b and the third surface 209 may form a complete resolved curved surface (or a part of a resolved curved surface), and the resolved curved surface may be a polynomial curved surface (such as a cylindrical surface, an elliptical surface, a hyperboloid, etc.), for example, the second surface 205b is part of a cylindrical surface, the third surface 209 is part of a cylindrical surface, and the second surface 205b aligned with the third surface 209 may form a complete cylindrical surface.

Referring to fig. 7, 8, 27, etc., the clamp 600 has a back 601 opposite to the electronic terminal, the back 601 of the clamp 600 is proximate to or attached to the third surface 209 of the first arm 210, and after the first arm 210 is received in the cavity of the first body 131, the back 601 of the clamp 600 is proximate to or attached to the second surface 205b of the second arm 220. This has the advantage that the clamp 600 and the connecting arm 200 are more compact when stowed.

Illustratively, the back 601 of the clip 600 is a flat surface and the third surface 209 is a flat surface, or the back 601 of the clip 600 is a curved surface and the third surface 209 is a curved surface.

Illustratively, the back surface 601 of the clip 600 is proximate or near the second surface 205b, and may refer to a portion of the back surface 601 that is proximate or near the second surface 205b.

Referring to fig. 7, 8, 9, 27, etc., the second arm 220 has a second surface 205b, the receiving groove 204 communicates with the second surface 205b, the second arm 220 has a third surface 209, and after the first arm 210 is received in the receiving groove 204, the third surface 209 is aligned with the second surface 205b, or the third surface 209 is adjacent to the second surface 205b.

Referring to fig. 7, 8, 9, 27, etc., the clip 600 has a back surface facing the electronic terminal, and after the first arm 210 is received in the receiving slot 204, the back surface 601 of the clip 600 is adjacent to or bonded to the surface of the second arm 220.

Referring to fig. 7, 8, 9, 27, etc., the second arm 220 has a second surface 205b, and after the first arm 210 is received in the receiving groove 204, the back surface 601 of the clamp 600 is brought into close proximity or contact with the second surface 205b of the second arm 220; the second arm 220 further has a first surface 205a, the first surface 205a is opposite to the second surface 205b, and the first surface 205a is provided with a light emitting portion 2211.

Initially, the usage direction of the electronic terminal points to the first side space 203a of the second arm 220, the first arm 210 rotates relative to the second arm 220 so that the usage direction of the electronic terminal points to the second side space 203b of the second arm 220, the first side space 203a is opposite to the second side space 203b, and the light emitted by the light emitting portion 2211 illuminates the first side space 203a. The advantage of setting up like this is, the light filling when being convenient for electronic terminal to shoot.

Referring to fig. 11, initially, the usage direction of the electronic terminal is directed to the first side space 203a of the second arm 220, and the first arm 210 rotates relative to the second arm 220 so that the usage direction of the electronic terminal is directed to the second side space 203b of the second arm 220, where the first side space 203a is opposite to the second side space 203 b; the second arm 220 is provided with a light emitting portion 2211, and the first side space 203a is illuminated by the light emitted from the light emitting portion 2211.

Referring to fig. 1 to 13, etc., the first arm 210 may be held by the second arm 220, and the clamp 600 is mounted to the first arm 210; the clamp 600 is rotatably mounted on the first arm 210, the clamp 600 can be held on the first arm 210, and when the clamp 600 rotates relative to the first arm 210, the radial direction of the electronic terminal changes; initially, the usage direction of the electronic terminal points to the first side space 203a of the second arm 220, and the first arm 210 rotates relative to the second arm 220 so that the usage direction of the electronic terminal points to the second side space 203b of the second arm 220, where the first side space 203a is opposite to the second side space 203 b; the second arm 220 has a light-emitting portion 2211, and the light emitted from the light-emitting portion 2211 illuminates the first side space 203a; the clamp 600 includes a clamping body 610, a first clamping portion 620 and a second clamping portion 630, the first clamping portion 620 is rotatably mounted on the clamping body 610, the first clamping portion 620 is receivable in the clamping body 610, the second clamping portion 630 is rotatably mounted on the clamping body 610, and the second clamping portion 630 is receivable in the clamping body 610; the connecting arm 200 further comprises a rotating connecting structure 100, the rotating connecting structure 100 comprises a first rotating part 110 and a second rotating part 120 which are rotatably matched, the first rotating part 110 is arranged on a first arm body 210, the second rotating part 120 is arranged on a second arm body 220, the connecting arm 200 is further provided with a first rotating cavity 208 communicated with the accommodating groove 204, the first rotating part 110 is arranged in the first rotating cavity 208, the first arm body 210 is bent, the first rotating part 110 is a first sleeve 110, the second rotating part 120 comprises a second sleeve 121 and a first main body 131, the second sleeve 121 is rotatably sleeved on the first sleeve 110, the second sleeve 121 is provided with a first accommodating cavity 101, the first main body 131 is sleeved on the first accommodating cavity 101, the first main body 131 has a squeezing effect on the second sleeve 121, the first main body 131 has a movement trend along a first direction relative to the second sleeve 121 so that the second sleeve has a tendency of outward expansion, the second sleeve 121 is further tightly matched with the first sleeve 110, and the first arm body 210 can be held on the second arm body 220; the second sleeve 121 is detachably mounted on the second arm 220, the first body 131 is detachably mounted on the first arm 210, and the second sleeve 121 has a first gap 102 formed therein so that the second sleeve 121 can expand outward; the rotary connection structure 100 has a first rotation axis, the second sleeve 121 rotates around the first rotation axis relative to the first sleeve 110, the extending direction of the first gaps 102 is parallel to the first rotation axis, the number of the first gaps 102 is greater than or equal to 2, the first gaps 102 are uniformly distributed on the second sleeve 121, one end of the first accommodating cavity 101 has a first opening 101a, the first body 131 can be sleeved on the first accommodating cavity 101 through the first opening 101a, and the first gaps 102 extend to the first opening 101a; the second sleeve 121 is circumferentially fixed relative to the first body 131, the rotatable connecting structure 100 further comprises a tightening member 140, the tightening member 140 acts on the first body 131 to enable the first body 131 to generate a squeezing action on the second sleeve 121, the tightening member 140 is a first fastening member 223a, and the tightening force of the first fastening member 223a on the second sleeve 121 is adjustable.

Illustratively, the first body 131 presses the second sleeve 121, so that the second sleeve 121 is tightly fitted with the first sleeve 110, and the first rotating member 110 is connected with the second rotating member 120 in a damping manner, so that the first arm 210 can be held on the second arm 220.

Referring to fig. 1 to 27, an embodiment of the present invention provides a mounting structure, including a first member 210, a second member 220, and a rotating connecting structure 100, where the second member 220 includes a first housing 221, a second housing 222, and the second housing 222 is detachably mounted to the first housing 221; the rotating connection structure 100 comprises a first rotating part 110 and a second rotating part 120 which are matched in a rotating mode, wherein the first rotating part 110 is arranged on the first component 210, the second rotating part 120 is arranged on the second component 220, and the first rotating part 110 is detachably arranged on the second rotating part 120; after the second casing 222 is separated from the first casing 221, the second rotating member 120 is separable from the first casing 221, and the second rotating member 120 is separable from the second casing 222.

This provides an advantage of facilitating the mounting and dismounting of the rotating connecting structure 100, that the second rotating member 120 is separable with respect to the first housing 221, and the second rotating member 120 is separable with respect to the second housing 222 after the second housing 222 is separated from the first housing 221, thereby facilitating the dismounting of the rotating connecting structure 100 from the second structure 220, and that the first rotating member 110 is detachably mounted to the second rotating member 120, thereby facilitating the dismounting of the first rotating member 110.

Illustratively, the first rotating member 110 is sleeved on the second rotating member 120.

Illustratively, the second rotating member 120 is sleeved on the first rotating member 110.

For example, the first rotating member 110 is a first sleeve 110, the second rotating member 120 is a shaft-like structure adapted to the first sleeve 110, the shaft-like structure may be sleeved on the first sleeve 110, the second rotating member 120 may be an integral structure, or the second rotating member 120 may be a separate structure, for example, the second rotating member 120 includes a first body 131, a second sleeve 121, a first connecting member 123, a second connecting member 132, etc.

Referring to fig. 17-26, the second member 220 has a first positioning post 224a, the second rotating member 120 has a first positioning hole 107a, the first positioning post 224a is sleeved in the first positioning hole 107a, the first casing 221 and the second casing 222 allow the second rotating member 120 to be limitedly mounted on the first positioning post 224a, the second rotating member 120 is integrally formed, or the second rotating member 120 is composed of at least 2 parts, at least 2 parts are mutually separable, and at least 2 parts are relatively fixed to form a whole.

For example, at least 2 partial bodies are fixed relatively to form a whole, and at least 2 partial bodies may be sequentially and fixedly connected to form a whole, or two partial bodies may be fixedly connected to form a whole.

It is to be understood that the second rotating member 120 may be inserted into the first positioning post 224a and the second rotating member 120 may be separated from the first positioning post 224 a.

For example, the second rotational member 120 is captively mounted to the first positioning post 224a, which may mean that the second rotational member 120 is axially fixed relative to the first positioning post 224a, and/or that the second rotational member 120 is circumferentially fixed relative to the first positioning post 224 a.

Referring to fig. 17 to 26, the first and

second housings

221 and 222 axially fix the second rotating member 120 with respect to the first positioning post 224a, the first housing 221 is provided with a first stopper wall 226a, the second housing 222 is provided with a second stopper wall 226b, and the first and second stopper walls 226a and 226b axially fix the second rotating member 120 with respect to the first positioning post 224 a; the first casing 221 and the second casing 222 fix the second rotating member 120 circumferentially relative to the first positioning column 224a, the first casing 221 is provided with a first partial ring 228a, the second casing 222 is provided with a second partial ring 228b, the first partial ring 228a and the second partial ring 228b form a first bearing ring 228 in combination, and the first bearing ring 228 is used for bearing the second rotating member 120 so as to fix the second rotating member 120 circumferentially relative to the first positioning column 224 a; the second member 220 further includes a first fastening member 223a, the first positioning post 224a is disposed on the first casing 221, and the first fastening member 223a passes through the second casing 222 to be fastened with the first casing 221.

For example, the first supporting ring 228 is used to support the second rotating member 120 so that the second rotating member 120 is fixed in the circumferential direction relative to the first positioning column 224a, and it can be understood that the first supporting ring 228 is only used to fix the second rotating member 120 in the circumferential direction relative to the first positioning column 224 a.

Illustratively, the first retainer ring 228 may also provide axial securement of the second rotational member 120 relative to the first positioning post 224 a.

Referring to fig. 17 to 26, the second component 220 has a second positioning hole 224b, the first driving part has a second positioning hole 107b, the second positioning hole 107b is sleeved with the second positioning hole 224b, the first casing 221 and the second casing 222 allow the second rotating part 120 to be limitedly mounted on the second positioning hole 107b, the second rotating part 120 is integrally formed, or the second rotating part 120 is composed of at least 2 parts, at least 2 parts are mutually separable, and at least 2 parts are relatively fixed to form a whole.

Illustratively, at least 2 partial bodies are relatively fixed to form a whole, at least 2 partial bodies are sequentially and fixedly connected to form a whole, or every two partial bodies are fixedly connected to form a whole.

For example, the second rotating member 120 is limited to the second positioning pillar 224b, which may mean that the second rotating member 120 is axially fixed relative to the second positioning pillar 224b, and/or the second rotating member 120 is circumferentially fixed relative to the second positioning pillar 224 b.

It is understood that the second rotating member 120 can be inserted into the second positioning pillar 224b, and the second rotating member 120 can be separated from the second positioning pillar 224 b.

Referring to fig. 17 to 26, the first housing 221 and the second housing 222 axially fix the second rotating member 120 relative to the second positioning column 224b, the first housing 221 is provided with a third limiting wall 227a, the second housing 222 is provided with a fourth limiting wall 227b, and the third limiting wall 227a and the fourth limiting wall 227b axially fix the second rotating member 120 relative to the second positioning column 224 b; the first casing 221 and the second casing 222 circumferentially fix the second rotating member 120 relative to the second positioning column 224b, the first casing 221 is provided with a third partial ring 229a, the second casing 222 is provided with a fourth partial ring 229b, the third partial ring 229a and the fourth partial ring 229b are combined to form a second bearing ring 229, and the second bearing ring 229 is used for bearing the second rotating member 120 so that the second rotating member 120 is circumferentially fixed relative to the second positioning column 224 b; the second member 220 further includes a second fastening member 223b, the second positioning column 224b is disposed on the first casing 221, and the second fastening member 223b passes through the second casing 222 to be fastened with the first casing 221.

For example, the second supporting ring 229 is used for supporting the second rotating component 120 so that the second rotating component 120 is fixed in the circumferential direction relative to the second positioning pillar 224b, it can be understood that the circumferential fixing of the second rotating component 120 relative to the second positioning pillar 224b can be achieved only through the second supporting ring 229.

For example, the second supporting ring 229 can also realize the axial fixation of the second rotating member 120 relative to the second positioning pillar 224 b.

Referring to fig. 17 to 26, the second member 220 has a first positioning post 224a and a second positioning post 224b, the second rotating member 120 has a first positioning hole 107a and a second positioning hole 107b, the first positioning post 224a is sleeved on the first positioning hole 107a, the second positioning post 224b is sleeved on the second positioning hole 107b, and the first positioning hole 107a and the second positioning hole 107b are not coaxial; the first casing 221 and the second casing 222 axially fix the second rotating member 120 with respect to the first positioning column 224a, and the first casing 221 and the second casing 222 axially fix the second rotating member 120 with respect to the second positioning column 224 b; the second rotating member 120 is of an integral structure, or the second rotating member 120 is composed of at least 2 parts, at least 2 parts are separable, and at least 2 parts are relatively fixed to form an integral body.

It can be understood that the first positioning hole 107a and the second positioning hole 107b are not coaxial, which can achieve the circumferential fixing of the second rotating member 120 relative to the first positioning column 224a, and the circumferential fixing of the second rotating member 120 relative to the second positioning column 224 b.

It is to be understood that the first and

second housings

221 and 222 axially fix the second rotating member 120 relative to the first positioning post 224a, the first and second limiting walls 226a and 226b axially fix the second rotating member 110 relative to the first positioning post 224a, and the first and second

partial turns

228a and 228b axially fix the second rotating member 120 relative to the first positioning post 224 a.

It is understood that the first housing 221 and the second housing 222 axially fix the second rotating member 120 relative to the second positioning post 224b, the third limiting wall 227a and the fourth limiting wall 227b axially fix the second rotating member 120 relative to the second positioning post 224b, and the third partial coil 229a and the fourth partial coil 229b axially fix the second rotating member 120 relative to the second positioning post 224 b.

Referring to fig. 17 to 26, the first housing 221 is provided with a first stopper wall 226a, the second housing 222 is provided with a second stopper wall 226b, and the first stopper wall 226a and the second stopper wall 226b axially fix the second rotating member 120 with respect to the first positioning column 224 a; the first housing 221 is provided with a third limit wall 227a, the second housing 222 is provided with a fourth limit wall 227b, and the third limit wall 227a and the fourth limit wall 227b axially fix the second rotating member 120 relative to the second positioning column 224 b; the first casing 221 and the second casing 222 fix the second rotating member 120 circumferentially relative to the first positioning column 224a, the first casing 221 is provided with a first partial ring 228a, the second casing 222 is provided with a second partial ring 228b, the first partial ring 228a and the second partial ring 228b form a first bearing ring 228 in combination, and the first bearing ring 228 is used for bearing the second rotating member 120 so as to fix the second rotating member 120 circumferentially relative to the first positioning column 224 a; the second member 220 further comprises a first fastener 223a, the first positioning column 224a is disposed on the first casing 221, and the first fastener 223a passes through the second casing 222 to be fastened with the first casing 221; the first casing 221 and the second casing 222 circumferentially fix the second rotating member 120 relative to the second positioning column 224b, the first casing 221 is provided with a third partial ring 229a, the second casing 222 is provided with a fourth partial ring 229b, the third partial ring 229a and the fourth partial ring 229b are combined to form a second bearing ring 229, and the second bearing ring 229 is used for bearing the second rotating member 120 so that the second rotating member 120 is circumferentially fixed relative to the second positioning column 224 b; the second member 220 further includes a second fastening member 223b, the second positioning pillar 224b is disposed on the first casing 221, and the second fastening member 223b passes through the second casing 222 to be fastened with the first casing 221.

Referring to fig. 22, 24, etc., the second rotating member 120 includes a first sub-body 120a and a second sub-body 120b, the first sub-body 120a has a first receiving cavity 101, and the second sub-body 120b is sleeved in the first receiving cavity 101 of the first sub-body 120 a; the second member 220 has a first positioning post 224a, the first partial body 120a has a first positioning hole 107a, the first positioning post 224a is sleeved on the first positioning hole 107a, the second member 220 has a second positioning post 224b, the second positioning post 224b is sleeved on the second positioning hole 107b, and the first positioning post 224a and the second positioning post 224b make the second partial body 120b not be able to be pulled out and sleeved on the first accommodating cavity 101; the second partial body 120b is sleeved in the first accommodating cavity 101 of the first partial body 120a, the first positioning column 224a is sleeved in the first positioning hole 107a, and the second positioning column 224b is sleeved in the second positioning hole 107b, so that the first partial body 120a is circumferentially fixed relative to the first positioning column 224a, and the second partial body 120b is circumferentially fixed relative to the second positioning column 224 b; the first casing 221 and the second casing 222 axially fix the second rotating member 120 with respect to the first positioning post 224a, and the first casing 221 and the second casing 222 axially fix the second rotating member 120 with respect to the second positioning post 224 b.

Referring to fig. 17 to fig. 26, the first positioning column 224a and the second positioning column 224b are not coaxial, the first accommodating chamber 101 is a cylindrical chamber, an extending direction of the first accommodating chamber 101 is not parallel to an extending direction of the first positioning column 224a, and an extending direction of the first accommodating chamber 101 is not parallel to an extending direction of the second positioning column 224 b; the first housing 221 is provided with a first stopper wall 226a, the second housing 222 is provided with a second stopper wall 226b, and the first stopper wall 226a and the second stopper wall 226b axially fix the second rotating member 120 with respect to the first positioning column 224 a; the first housing 221 is provided with a third limit wall 227a, the second housing 222 is provided with a fourth limit wall 227b, and the third limit wall 227a and the fourth limit wall 227b axially fix the second rotating member 120 relative to the second positioning column 224 b; the second member 220 further comprises a first fastener 223a, the first positioning column 224a is disposed on the first casing 221, and the first fastener 223a passes through the second casing 222 to be fastened with the first casing 221; the second member 220 further includes a second fastening member 223b, the second positioning column 224b is disposed on the first casing 221, and the second fastening member 223b passes through the second casing 222 to be fastened with the first casing 221; the first shell 221 and the second shell 222 circumferentially fix the second rotating member 120 relative to the first positioning column 224a, the first shell 221 is provided with a first partial ring 228a, the second shell 222 is provided with a second partial ring 228b, the first partial ring 228a and the second partial ring 228b are combined to form a first bearing ring 228, and the first bearing ring 228 is used for bearing the second rotating member 120 so that the second rotating member 120 is circumferentially fixed relative to the first positioning column 224 a; the first casing 221 and the second casing 222 circumferentially fix the second rotating member 120 relative to the second positioning post 224b, the first casing 221 is provided with a third partial ring 229a, the second casing 222 is provided with a fourth partial ring 229b, the third partial ring 229a and the fourth partial ring 229b are combined to form a second bearing ring 229, and the second bearing ring 229 is used for bearing the second rotating member 120 so that the second rotating member 120 is circumferentially fixed relative to the second positioning post 224 b.

The above description is only intended to illustrate the technical solution of the present invention and not to limit the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A rotary connecting structure is used for connecting a first member and a second member of a shooting bracket and is characterized by comprising a first sleeve, a second sleeve and a first main body,

the first sleeve is arranged on a first component of the shooting bracket;

the second sleeve is arranged on a second component of the shooting bracket, and the second sleeve is rotatably sleeved on the first sleeve;

the second sleeve is provided with a first accommodating cavity, the first body is sleeved in the first accommodating cavity, and the first body has a movement trend along a first direction relative to the second sleeve so that the second sleeve has an outward expansion trend to realize the tight fit of the second sleeve and the first sleeve, and further realize the retention of the first component on the second component.

2. The rotatable connection of claim 1, wherein the second sleeve has a first gap disposed therethrough to facilitate outward expansion of the second sleeve.

3. The rotating connection according to claim 2, characterized in that the rotating connection has a first axis of rotation, about which the second sleeve rotates relative to the first sleeve,

the first direction is parallel to the first axis of rotation;

the extending direction of the first gap is parallel to the first rotation axis;

the number of the first gaps is more than or equal to 2, and the first gaps are uniformly distributed on the second sleeve;

one end of the first accommodating cavity is provided with a first opening, the first main body can be sleeved in the first accommodating cavity through the first opening, and the first gap extends to the first opening.

4. The rotatable connection of claim 2, wherein the second sleeve is circumferentially fixed relative to the first body, the rotatable connection further comprising a first protrusion protruding from the first body, the first protrusion being captured in the first gap to circumferentially fix the second sleeve relative to the first body.

5. The rotating connecting structure according to claim 4, wherein the rotating connecting structure further comprises a second projection;

the second protrusion is convexly arranged on the inner wall of the second sleeve, the first main body is provided with a first groove, or the second protrusion is convexly arranged on the first main body, the inner wall of the second sleeve is provided with a first groove, and the second protrusion is clamped in the first groove so that the second sleeve is circumferentially fixed relative to the first main body;

the rotary connecting structure is provided with a first rotary axis, the second sleeve rotates relative to the first sleeve around the first rotary axis, the extending direction of the first protrusion is parallel to the first rotary axis, and the extending direction of the second protrusion is parallel to the first rotary axis;

the number of the first gaps is 2, the number of the first bulges is 2, the number of the second bulges is 2, in a cross section of the rotary connecting structure, a connecting line of any two points of the 2 first bulges is a first connecting line, a connecting line of any two points of the second bulges is a second connecting line, and the first connecting line and the second connecting line are in a cross shape.

6. The rotatable connection of claim 1, further comprising a preload member that causes the first body to have a tendency to move in a first direction relative to the second sleeve, the preload member being a first threaded member, a tightening force of the first threaded member being adjustable such that a force of the first body against the second sleeve is adjustable.

7. The rotary connection structure as claimed in claim 6,

the first threaded part comprises a rod part and a head part arranged at one end of the rod part, the rotary connecting structure further comprises a connecting part, the connecting part is arranged on the second sleeve, the first main body is provided with a first fastening hole, the rod part of the first threaded part penetrates through the connecting part to be fixedly connected with the first fastening hole, and the head part of the first threaded part is blocked on the connecting part.

8. The rotational connection structure according to claim 7,

the second sleeve having a tendency to move in a second direction relative to the first body, the second direction being opposite the first direction;

the first sleeve is provided with a first rotary cavity, the second sleeve is provided with a first rotary surface matched with the first rotary cavity, the second sleeve is rotatably sleeved on the first rotary cavity, the cross section of the first rotary cavity is gradually reduced along a second direction, and the cross section of the first rotary surface is gradually reduced;

the first sleeve is limited in sliding movement relative to the second member in a second direction, the second sleeve has a tendency to move relative to the first sleeve in the second direction, and the first turning cavity of the first sleeve is in tight fit with the first turning surface of the second sleeve;

the preload piece causes the second sleeve to have a tendency to move in a second direction relative to the first sleeve.

9. A shooting support is characterized by comprising a connecting arm and a clamp, wherein the clamp is used for installing an electronic terminal,

the connecting arm includes a first arm body as a first member as set forth in any one of claims 1 to 8, a second arm body as a second member as set forth in any one of claims 1 to 8, and the rotating connecting structure as set forth in any one of claims 1 to 8, the clamp being attached to the first arm body.