CN217133508U

CN217133508U - Fixing device and lamp

Info

Publication number: CN217133508U
Application number: CN202123311420.6U
Authority: CN
Inventors: 姚志辉; 彭道友
Original assignee: Aputure Imaging Industries Co Ltd
Current assignee: Shenzhen Aitushi Innovation Technology Co.,Ltd.
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-08-05
Anticipated expiration: 2031-12-27

Abstract

The application discloses fixing device and lamps and lanterns. The securing device is used for locking a first external structure relative to a second external structure, and comprises: the locking seat is used for being connected with the first external structure, and a groove is formed in one side, facing the second external structure, of the locking seat; the fixed block is used for being connected with the second external structure and is rotatably arranged in the groove; one end of the rotating piece is used for being abutted against one side of the second external structure, which is far away from the fixed block, the other end of the rotating piece penetrates through the second external structure and the fixed block and is connected to the locking seat, and the rotating piece is rotatably connected with the locking seat relatively; the inner wall of the groove is provided with a first friction surface, the fixed block is circumferentially provided with a second friction surface, and the rotating piece is configured to adjust the position of the fixed block in the groove so as to change the mutual abutting and overlapping area of the first friction surface and the second friction surface. Fixing device in this application can be convenient for lock the fixed relative second exterior structure with first exterior structure.

Description

Fixing device and lamp

Technical Field

The application relates to the technical field of lighting apparatus, in particular to a fixing device and a lamp.

Background

Professional photographers usually need auxiliary lighting lamps and lanterns to carry out the light filling when indoor creation to the effect of brightening is realized shooting the thing. When shooing, the light engineer can often adjust the direction of illumination and reach the anticipated effect of works, and auxiliary lighting lamps and lanterns include lamp body and support, through the angle of illumination of the relative motion back adjustment lamp body between lamp body and the support.

With the increase of the requirement of large scene shooting, larger power output becomes necessary, so that heavier lamp bodies or a plurality of lamp bodies are arranged in parallel in the frame to form products with higher power and the like, and the corresponding products are designed, then the existing support fixing structure can only bear the lamp bodies or the frames with smaller volume or smaller weight, and when the lamp bodies or the frames have larger bearing capacity and need to apply larger torque force, the lamp bodies or the frames are easy to be fixed and loose or even cannot realize reliable angle adjustment, and inconvenience and use risk are brought to users.

SUMMERY OF THE UTILITY MODEL

To solve at least one of the above problems in the prior art, according to one aspect of the present application, there is provided a fixing device for fixing a first external structure with respect to a second external structure, comprising:

the locking seat is used for being connected with the first external structure, and a groove is formed in one side, facing the second external structure, of the locking seat;

the fixed block is used for being connected with the second external structure and can be rotatably arranged in the groove; and

one end of the rotating piece is used for being abutted against one side of the second external structure, which is far away from the fixed block, the other end of the rotating piece penetrates through the second external structure and the fixed block and is connected to the locking seat, and the rotating piece is rotatably connected with the locking seat relatively;

the inner wall of the groove is provided with a first friction surface, the fixed block is circumferentially provided with a second friction surface, and the rotating piece is configured to adjust the position of the fixed block in the groove so as to change the mutual abutting and overlapping area of the first friction surface and the second friction surface.

Therefore, the fixing block is driven to move towards the direction close to the locking seat under the driving of the rotating piece, the outer diameter of the fixing block is gradually increased towards the direction close to the first external structure, after the fixing block continuously moves and abuts against the side wall of the groove, the axial tension a of the rotating piece borne by the fixing block can generate a radial component force b on the side wall of the groove, and meanwhile, a tangential friction force c is generated between the side wall of the groove and the fixing block, so that the fixing block is locked in the groove under the combined action of the radial component force b and the tangential friction force c, the first external structure is fixed on the second external structure, and meanwhile, the fixing device in the embodiment further has the characteristics of stepless adjustment and larger torque bearing.

The present application also provides in another aspect a luminaire comprising: a lamp body having a first outer structure provided thereon; a bracket having a second external structure disposed thereon; the fixing device, fixing device the fixed block with the leg joint, fixing device the locking seat with the lamp body is connected, fixing device rotate the piece and wear to establish in proper order the support with the lamp body, just it is relative to rotate the piece lamp body threaded connection, it is relative support sliding connection.

Therefore, the fixing device is arranged between the lamp body and the support, the fixing block moves towards the direction close to the locking seat under the driving of the rotating piece in the fixing device, the outer diameter of the fixing block is gradually increased towards the direction close to the first external structure, when the fixing block continues to move and is abutted to the side wall of the groove, the axial tension a of the rotating piece on the fixing block can generate a radial component force b on the side wall of the groove, and meanwhile, a tangential friction force c is generated between the side wall of the groove and the fixing block, so that the fixing block is locked in the groove under the combined action of the radial component force b and the tangential friction force c, and the lamp body and the support are locked.

Drawings

Fig. 1 is a schematic view of a fixing device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the fixing device of FIG. 1 from another perspective;

FIG. 3 is a schematic view of a fixing device and an external structure according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of the fixture of FIG. 1;

FIG. 5 is a schematic cross-sectional view of a fastening device and an external structure provided in accordance with an embodiment of the present application, without involving a gasket;

FIG. 6 is a schematic cross-sectional view of a gasket involved in mating a fixture with an external structure provided by an embodiment of the present application;

fig. 7 is a schematic structural diagram of a fixing block according to an embodiment of the present application;

fig. 8 is another schematic structural diagram of the fixing block according to the embodiment of the present application;

fig. 9 is a schematic structural view of a fixing block according to an embodiment of the present disclosure;

FIG. 10 is an exploded view of the handle and rotatable member of the fastening device provided in accordance with an embodiment of the present application;

FIG. 11 is a schematic view of a view angle of a lamp according to an embodiment of the present application;

fig. 12 is a schematic cross-sectional view of the lamp in fig. 11 along the direction a-a.

Wherein the reference numerals have the following meanings:

a fixture 100;

the fixing block 10, the limiting groove 11 and the through hole 12;

a rotor 20, a connecting portion 21, a sliding portion 22, a driving portion 23, and a second tooth portion 24;

the locking seat 30, the groove 31 and the guide post 36;

a first gasket 40;

a first elastic member 50;

a second gasket 60;

a handle 70, a first tooth 71, a cavity 72;

a connecting member 80;

a second elastic member 90;

a first outer structure 200;

a second outer structure 300;

a lamp 400;

a lamp body 410;

a bracket 420.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The present application is described in further detail below with reference to the attached figures.

Referring to fig. 1 to 10, a fixing device 100 according to an embodiment of the present disclosure is used for fixing a first external structure 200 relative to a second external structure 300, and the fixing device 100 includes a fixing block 10, a rotating member 20, and a locking base 30.

Referring to fig. 1 to 10, the locking base 30 is used to connect with the first external structure 200, and a groove 31 is formed on a side of the locking base 30 facing the second external structure 200. The fixing block 10 is used for being connected with the second external structure 300 and is rotatably disposed in the groove 31. The first and second

external structures

200, 300 may be part of a housing on a corresponding device, and so on. For example, the first and second

outer structures

200 and 300 may both be plate-like structures. The first outer structure 200 may be a part of a lamp body, and the second outer structure 300 may be a part of a bracket.

The locking seat 30 and the first external structure 200 may be fixed by a fastener such as a screw or a bolt, or may be formed by bonding, clamping, welding, or the like, and the fixing block 10 and the second external structure 300 may be fixed by a fastener such as a screw or a bolt, or may be formed by bonding, clamping, welding, or the like.

In some embodiments, the locking seat 30 may be further integrally formed with the first outer structure 200, and the fixing block 10 may also be integrally formed with the second outer structure 300, which is not limited herein.

One end of the rotating member 20 is used for abutting against one side of the second external structure 300 departing from the fixing block 10, and the other end of the rotating member 20 penetrates through the second external structure 300 and the fixing block 10 and is connected with the locking seat 30. It can be understood that the rotating member 20 may be a shaft, one end of which is exposed from the second external structure 300, the other end of which is inserted through the second external structure 300, and the fixed block 10 is connected to the locking base 30, and the rotating member 20 may be rotated relative to the second external structure 300 and the fixed block 10 and connected to the locking base 30, for example, the locking base 30 is provided with an internal thread, the end of the rotating member 20 is provided with an external thread, and the two are connected to each other by a screw thread, in other embodiments, a nut may also be disposed on a side of the locking base 30 away from the groove 31, and the rotating member 20 is inserted through the second external structure 300, the fixed block 10 and the locking base 30 and then connected to the nut by a screw thread.

The inner wall of the groove 31 is provided with the first friction surface 311, the first friction surface 311 may be a whole circle arranged along the circumferential direction of the groove 31, or may be a plurality of friction surfaces arranged at intervals along the circumferential direction of the groove 31, and the first friction surface 311 may also extend along the recessed direction of the groove 31, that is, have a certain width. The first friction surface 311 may be an inclined plane or an arc surface (e.g., a convex or concave curved surface, etc.), or the like. The fixed block 10 is provided with a second friction surface 111 in the circumferential direction, the second friction surface 111 may be a plurality of second friction surfaces 111 arranged along the entire circumference of the side wall (i.e. the surface in the thickness direction) of the fixed block 10, and of course, the second friction surfaces 111 may be arranged along the circumferential direction of the fixed block 10 at intervals, the second friction surfaces 111 may extend along the thickness direction of the fixed block 10, the second friction surfaces 111 may be inclined planes or arc-shaped planes (e.g. convex or concave curved planes, etc.), etc., as long as they can be correspondingly adapted to the first friction surface 311, for example, both of them are adapted planes, in this case, the first friction surface 311 and the second friction surface 111 may be parallel to each other, of course, one of the convex surfaces and the other corresponding concave surfaces may be aligned.

The rotating member 20 is configured to adjust the position of the fixed block 10 in the groove 31 to change the area where the first friction surface 311 and the second friction surface 111 are abutted and overlapped with each other. It can be understood that one end of the rotating member 20 abuts against the second external structure 300, and the rotating member 20 can rotate relative to the second external structure 300, the fixed block 10 and the locking seat 30, since the end of the rotating member is rotatably connected to the locking seat 30, when the rotating member 20 rotates in a first direction (for example, clockwise), the second external structure 300 drives the fixed block 10 to move towards the groove 31, so that the first friction surface 311 and the second friction surface 111 abut against each other, and the fixed block 10 is further driven to move towards the groove 31 along with the rotation of the rotating member 20, so that the area where the first friction surface 311 and the second friction surface 111 abut against each other is larger, the fixing among the fixed block 10, the rotating member 20 and the locking seat 30 is tighter, and as long as the rotation is large enough, the area where the two friction surfaces contact with each other is larger, the locking attachment of the fixing block 10 to the locking seat 30 is firmer, and the fixing between the first external structure 200 and the second external structure 300 is firmer and more reliable. When the rotating member 20 is rotated in a second direction (e.g., counterclockwise) opposite to the first direction, the above-mentioned process is just reversed, that is, the first friction surface 311 and the second friction surface 111 have a smaller area to be abutted against and overlapped with each other than before, and the fixed block 10 is less pressed against the side wall of the groove 31, so that the rotation of the fixed block 10 relative to the groove 31 can be adjusted, that is, the rotation adjustment between the first external structure 200 and the second external structure 300 is realized.

By driving the rotating member 20, the fixing block 10 is driven to move in a direction close to the locking seat 30, because the outer diameter of the fixing block 10 gradually increases in a direction close to the first external structure 200, when the fixing block 10 continues to move and abuts against the side wall of the groove 31, an axial tension a of the fixing block 10 from the rotating member 20 generates a radial component force b on the side wall of the groove 31, and a tangential friction force c is generated between the side wall of the groove 31 and the fixing block 10, so that the fixing block 10 is locked in the groove 31 under the combined action of the radial component force b and the tangential friction force c, and the first external structure 200 is fixed on the second external structure 300.

In some embodiments, the width of the second friction surface 111 may be equal to the width of the first friction surface 311, but the width of the second friction surface 111 may also be greater than the width of the first friction surface 311, and it is understood that the fixing block 10 may be partially accommodated in the groove 31, or may be entirely accommodated in the groove 31, and the embodiment is not limited herein.

Specifically, referring to fig. 3, the force analysis of the fixed block 10 is shown in fig. 3, the fixed block 10 is subjected to an axial pulling force a exerted by the rotating member 20, after the outer wall of the fixed block 10 abuts against the sidewall of the groove 31, the axial pulling force a generates a radial component force b on the sidewall of the groove 31 in the radial direction of the fixed block 10, and the radial component force b presses the locking seat 30 outwards; meanwhile, because the fixed block 10 and the locking seat 30 move relatively, a tangential friction force c exists between the fixed block 10 and the locking seat 30, the magnitude of the tangential friction force c is the radial component force b multiplied by the friction coefficient between the fixed block 10 and the groove 31, the generated tangential friction force c prevents the fixed block 10 and the locking seat 30 from moving continuously, and when the radial component force b is larger, the tangential friction force c between the fixed block 10 and the locking seat 30 is larger, and the rotating force which needs to be overcome when the fixed block 10 moves relative to the locking seat 30 is larger. It will be appreciated that the taper angle of the anchor block 10 needs to be within a predetermined range to apply a radial component b to the locking socket 30.

In some embodiments, referring to fig. 3-5 in combination, the inner wall of the groove 31 is circumferentially provided with the first friction surface 311, the distance from the first friction surface 311 to the axis L of the rotating member 20 gradually increases from the first outer structure 200 to the second outer structure 300, and the distance from the second friction surface 111 to the axis L of the rotating member 20 gradually increases from the first outer structure 200 to the second outer structure 300.

In one embodiment of the present application, the taper angle a of the fixing block 10 is in the range of 0-45 °, which can ensure the magnitude of the radial component b between the fixing block 10 and the locking seat 30, and ensure the locking between the fixing block 10 and the locking member 30.

It can be understood that, when the taper angle θ of the fixed block 10 is 0 °, which is equivalent to the fixed block 10 being cylindrical, when locking with the locking seat 30, under the driving of the rotating element 20, after a small section of the locking seat 30 enters the groove 31 and contacts with the sidewall of the groove 31, the fixed block 10 can generate a radial component force b and a tangential friction force c to the locking seat 30, and thus can lock. It can be understood that the locking phenomenon is easily generated between the fixing block 10 and the locking seat 30, which are in a column shape, and the locking phenomenon is difficult to unlock when unlocking is required, so that it is inconvenient to drive the first external structure 200 and the second external structure 300 to move relatively when angular adjustment is required.

As the taper angle θ is gradually increased, as shown in fig. 7 to 8, the outer diameter of the fixed block 10 is changed at a larger rate, and the upper side of the side wall of the fixed block 10 tends to be closer to a central point. For example, the taper angle θ may be set to 13 °, at this time, the inclination angle of the side wall of the fixed block 10 is not large, and the change rate of the outer diameter of the fixed block 10 is small, for example, fig. 7, the taper angle θ may be set to 19 °, at this time, the inclination angle of the side wall of the fixed block 10 is larger than the inclination angle of the fixed block 10 with the 13 ° taper angle, for example, fig. 8, at this time, when the taper angle θ is set to 45 °, compared with the fixed block 10 in fig. 6 and 7, at this time, the inclination angle of the side wall of the fixed block 10 is largest, and the change rate of the outer diameter is also largest, when the same groove 31 is locked, the fixed block 10 needs to be driven by the rotating member 20 to move a larger distance into the groove 31 to achieve locking, that is, at this time, the rotating member 20 needs to rotate by a larger angle. When the taper angle θ of the fixed block 10 is greater than 45 °, the radial component force b will disappear, and the fixed block 10 and the locking seat 30 will be difficult to lock.

In a specific embodiment of the present application, the taper angle θ of the fixing block 10 is set to 10 °, which not only facilitates the rotation adjustment of the rotating member 20, but also minimizes the machining error because the fixing block 10 has machining error during machining, and the taper angle θ is too small and the machining error is too large. When the taper angle θ is set too large, the rotation member 20 rotates by a large angle to drive the fixed block 10 to move a long distance in the axial direction, which is inconvenient to adjust.

In some embodiments, referring to fig. 3-6 in combination, the locking socket 30 may include a bottom plate 32 and a side plate 34, and the first external structure 200 is coupled to the bottom plate 32 and/or the side plate 34, it being understood that the first external structure 200 may be fixedly coupled to the bottom plate 32 via screws, etc. Alternatively, the first external structure 200 may be fixedly connected to the side plate 34, for example, the first external structure 200 is provided with a fixing hole, and the side plate 34 is entirely embedded in the fixing hole. In other embodiments, the first external structure 200 is coupled to both the bottom panel 32 and the side panel 34, it being understood that the first external structure 200 has a sufficient thickness and the first external structure 200 is coupled to both the bottom panel 32 and the side panel 34 via fasteners. The side plate 34 surrounds the bottom plate 32 and extends toward the second external structure 300 to form a groove 31, the groove 31 may be circular, polygonal, or oval, and the like, and the fixing block 10 may also be circular, polygonal, or oval, and the like, as long as the shape of the fixing block 10 can be matched with the shape of the groove 31. The groove 31 gradually increases from the first outer structure 200 to the second outer structure 300, the inner wall of the side plate 34 is a first friction surface 311, and the circumferential side wall of the fixed block 10 is a second friction surface 111. It is understood that the inner wall of the side plate 34 directly forms the first friction surface 311, the outer wall of the fixed block 10 directly forms the second friction surface 111, thereby facilitating the manufacturing, but in other embodiments, the first friction surface 311 may be additionally formed on the inner wall of the side plate, which is not integrally formed with the inner wall of the side plate, such as mutually spaced or discontinuous surface structure, likewise, the second friction surface 111 may not be directly outer wall of the fixed block 10, the second friction surface 111 may be spaced from the outer wall of the fixed block 10, or discontinuous surface structure, such as the fixed block 10 may be oval runway type, including two straight surfaces and two curved surfaces, and for each surface, the two curved surfaces are obliquely arranged in the thickness direction (i.e. have cone angles), and in this case, the two curved surfaces may be corresponding friction surfaces.

Referring to fig. 3, in an embodiment of the present invention, in order to increase the fixing strength of the entire fixing mechanism 100, the locking seat 30 and the fixing block 10 are both made of metal materials, and when the rotating member 20 is driven to be locked, friction noise is generated between the locking seat 30 and the fixing block 10, so in order to reduce noise generated therebetween, in the embodiment, the fixing device 100 further includes a first gasket 40, the first gasket 40 is received in the groove 31 and located between the first friction surface 311 and the second friction surface 111, and a diameter of the first gasket 40 is gradually increased from the first outer structure 200 to the second outer structure 300, so that the friction noise generated between the locking seat 30 and the fixing block 10 is reduced by disposing the first gasket 40 between the locking seat 30 and the fixing block 10.

It is understood that the first gasket 40 in this embodiment may be made of a non-metal material, such as a polymer material, and the first gasket 40 in this embodiment may be made of polyoxymethylene, so as to ensure sufficient toughness and wear resistance.

Referring to fig. 3 and 4, in an embodiment of the present application, in order to facilitate unlocking between the fixed block 10 and the locking seat 30, the fixing device 100 further includes a first elastic element 50, the first elastic element 50 is received in the groove 31 and sleeved outside the rotating element 20, one end of the first elastic element 50 abuts against the bottom wall of the locking seat 30, and the other end abuts against the end wall of the fixed block 10. The first elastic member 50 may be a spring or a resilient plate. When locking seat 30 and fixed block 10 are in the locking state, first elastic component 500 is in the compression state, thereby through still being connected with first elastic component 500 between locking seat 30 and fixed block 10, can prevent to take place locking phenomenon between locking seat 30 and the fixed block 10, locking seat 30 and fixed block 10 are under the locking state, first elastic component 50 is in by the compression state, when needs are carried out the unblock to locking seat 30 and fixed block 10, to opposite rotation piece 20, at this moment with locking seat 30 and fixed block 10 quick spring-out separation under first elastic component 500 release elastic force, be convenient for subsequent regulation operation.

Referring to fig. 4-6, in order to facilitate the installation and positioning of the first elastic element 500, the locking seat 30 in this embodiment further has a guiding post 36 in the groove 31, the guiding post 36 may be disposed at a central position of the bottom plate 32, and the guiding post 36 extends toward the direction of the fixed block 10, and the first elastic element 50 is disposed in the guiding post 36 or is sleeved outside the guiding post 36. It is understood that the guide post 36 may have a through hole, and the first elastic member 50 may be located in the through hole, or the first elastic member has a larger radial dimension and a larger radial dimension than the guide post 36, so that the first elastic member 50 can be sleeved on the guide post 36. The first elastic element 50 may be accommodated in the middle of the fixing block 10, and a side of the fixing block 10 facing the locking seat 30 may be provided with a limiting groove 11, so that the guide post 36 extends into the limiting groove 11, and at least a portion of the first elastic element 50 may be accommodated in the limiting groove 11 in a natural state. Therefore, the guide post 36 is arranged in the groove 31 of the locking seat 30 towards the fixed block 10, so that the first elastic element 50 is convenient to position and mount, and meanwhile, the first elastic element 50 can stretch and contract along the path formed by the guide post 36.

It can be understood that, at this time, a relative motion may be generated between the side wall of the limiting groove 11 and the outer wall of the guide post 36, and since the locking seat 30 and the fixing block 10 are made of metal materials, a friction noise may be generated, so as to reduce the friction noise generated by the relative motion between the side wall of the limiting groove 11 and the outer wall of the guide post 36, the fixing device 100 in this embodiment further includes a second gasket 60, the second gasket 60 is sleeved outside the guide post 36, the fixing block 10 is provided with the limiting groove 11, the second gasket 60 is disposed in the limiting groove 11, the second gasket 60 is located between the inner wall of the limiting groove 11 and the side wall of the guide post 36, so that the second gasket 60 is sleeved outside the guide post 36, and the friction noise generated by the relative motion between the side wall of the limiting groove 11 in the locking seat 30 and the outer wall of the guide post 36 can be reduced.

It is understood that the second gasket 60 in the present embodiment, like the first gasket 40, can be made of a non-metal material, such as a polymer material, and the second gasket 60 and the first gasket 40 in the present embodiment are made of the same material, and are made of polyoxymethylene, so as to ensure sufficient toughness and wear resistance.

Referring to fig. 4 and 10, in an embodiment of the present application, the rotating member 20 includes a connecting portion 21 and a driving portion 23 connected in sequence, the driving portion 23 abuts against a side of the second external structure 300 away from the fixed block 10, one end of the connecting portion 21 is connected to the driving portion 23, and the other end of the connecting portion penetrates through the second external structure 300 and the fixed block 10 and is connected to the locking seat 30 by a thread. The connecting part 21 and the driving part 23 can synchronously rotate relative to the fixed block 10. The connecting portion 21 and the bottom plate 32 are screwed. It is understood that the connecting portion 21 and the driving portion 23 may be integrally formed, the connecting portion 21 may be a shaft, the end portion thereof may be provided with a thread, and the driving portion 23 may be a knob or a rotating block. The circumferential dimension of the driving portion 23 may be larger than the circumferential dimension of the connecting portion 21.

In other embodiments, the rotating member 20 includes a connecting portion 21, a sliding portion 22 and a driving portion 23 connected in sequence, the connecting portion 21 is provided with threads, and is respectively in threaded connection with the locking seat 30 and the second external structure 300, the sliding portion 22 is in sliding connection with the fixing seat 10, and penetrates through the fixing seat 10 and leaks out of the fixing seat 10, the outer diameter of the driving portion 23 is larger than the outer diameter of the sliding portion 22, so that when the fixing seat 10 and the locking seat 30 need to be locked, by rotating the driving portion 23 under the action of external force, because the connecting portion 21 is in threaded connection with the locking seat 30 and the second external structure 300 and the sliding portion 22 is in sliding connection with the fixing seat 10, the entire rotating member 20 can move in the axial direction with respect to the fixing seat 10 and the locking seat 30, and because the outer diameter of the driving portion 23 is larger than the outer diameter of the sliding portion 22, the driving portion 23 cannot penetrate through the through hole 12 in the fixing seat 10, the driving part 23 drives the first external structure 200 connected to the fixed block 10 and the fixed block 10 to move together in a direction approaching the locking seat 30, so as to lock the fixed block 10 and the locking seat 30.

In some embodiments, referring to fig. 3-6 in combination, the mounting block 10 and the end wall of the bottom plate 32 on the side facing the recess 31 are parallel, the mounting block 10, the second external structure 300 and the driving portion 23 are parallel to each other, and the connecting portion 21 is perpendicular to the mounting block 10. It can be understood that the above arrangement can make the force applied by the driving portion 23 uniformly transmitted to the fixing block 10 through the second external structure 300, thereby facilitating the overall structure to be stressed more evenly and reducing the risk of the fixing block 10 tilting in the groove 31.

Referring to fig. 1 to 4 and 10, in order to facilitate the rotation of the hand, the fixing device 100 in this embodiment further includes a handle 70, the handle 70 is L-shaped, and one end of the handle 70 is connected to the driving portion 23 for driving the rotation member 20 to rotate under an external force, so that the L-shaped handle 70 is disposed for facilitating the operation of the other end of the handle 70 to drive the rotation member 20 to rotate.

Specifically, one end of the handle 70 in this embodiment is sleeved outside the driving portion 23, and since the handle 70 is L-shaped and has a certain length, in a certain adjusting state, which may be influenced by the external supporting structure without rotation, the handle 70 of the present embodiment is provided with a plurality of first teeth 71 circumferentially arranged in one end thereof, a plurality of second teeth 24 circumferentially arranged on the outer wall of the driving portion 23, the plurality of first teeth 71 and the plurality of second teeth 204 are engaged, so that the handle 70 and the driving part 23 can be separated after the handle 70 is axially moved relative to the driving part 23 by the plurality of first teeth 71 circumferentially arranged in the handle 70 and the plurality of second teeth 24 circumferentially arranged on the outer wall of the driving part 23, when the handle 70 is rotated to a proper angle, the rotating member 20 can be driven to rotate by the handle 70 by engaging the first tooth portion 71 with the plurality of second tooth portions 204.

It can be understood that, in order to facilitate the rotation adjustment between the handle 70 and the driving portion 23, the fixing device 100 in this embodiment further includes a connecting member 80 and a second elastic member 90, a cavity 72 is further disposed in the handle 70, one end of the connecting member 80 penetrates through the cavity wall of the cavity 72 and is connected to the driving portion 23, the other end of the connecting member 80 is accommodated in the cavity 72, and the second elastic member 90 is accommodated in the cavity 72 and is sleeved outside the other end of the connecting member 80. When the handle 70 needs to be rotationally adjusted relative to the driving portion 23, the handle 70 is disengaged from the rotating member 20 and the second elastic member 90 is compressed in the axial direction of the rotating member 20, and after the handle 70 is rotated to a position, the handle 70 is rebounded by the second elastic member 90, so that the first tooth portion 71 and the second tooth portion 204 are continuously engaged.

Specifically, the connecting member 80 in this embodiment is a bolt, and is accommodated in the handle 70 and screwed with respect to the driving portion 23, and the second elastic member 90 is sleeved on the non-threaded portion of the bolt.

Referring to fig. 11 to 12, in other embodiments, the present application further provides a lamp 400, including a lamp body 410, a bracket 420, and the fixing device 100, wherein the lamp body 410 is provided with a first external structure 200, and the bracket 420 is provided with a second external structure 300; the fixing block 10 of the fixing device 100 is connected with the second external structure 300, the locking seat 30 of the fixing device 100 is connected with the first external structure 200, one end of the rotating member 20 of the fixing device 100 is used for being abutted against one side of the second external structure (300) departing from the fixing block 10, and the other end of the rotating member 20 penetrates through the second external structure 300, the fixing block 10 and is connected with the locking seat 30 to connect the lamp body 410 with the support 420, so that the lamp body 410 can be supported at an irradiation angle by the support 420.

The fixing block 10 of the fixing device 100 is connected to the bracket 420, the locking seat 30 of the fixing device 100 is connected to the lamp body 410, the rotating member 20 of the fixing device 100 sequentially penetrates through the bracket 420 and the lamp body 410, and the rotating member 20 is in threaded connection with the lamp body 410 and is slidably connected with the bracket 420, so that the bracket 420 and the lamp body 410 are fixed by the fixing device 100.

It can be understood that, at this time, the other end of the bracket 420 is rotatably connected with respect to the lamp body 410, when the fixing device 100 is in the unlocked state, the bracket 420 and the lamp body 410 can rotate relative to each other, and after the lamp body 410 rotates to a desired angle relative to the bracket 420, the bracket 420 and the lamp body 410 are fixed by the fixing device 100. For example, at least a portion of the bracket 420 corresponds to the second outer structure 300, and at least a portion of the lamp body 410 corresponds to the first outer structure 200.

In the lamp 400, the fixing device 100 is disposed between the lamp body 410 and the bracket 420, the fixing block 10 is driven to move towards the locking seat 30 by the rotation member 20 in the fixing device 100, and since the outer diameter of the fixing block 10 gradually increases towards the first external structure 200, when the fixing block 10 continues to move and is abutted against the side wall of the groove 31, the axial tension a of the fixing block 10 from the rotation member 20 generates a radial component force b on the side wall of the groove 31, and a tangential friction force c is generated between the side wall of the groove 31 and the fixing block 10, so that the fixing block 10 is locked in the groove 31 under the combined action of the radial component force b and the tangential friction force c, thereby locking the lamp body 410 and the bracket 420.

The technical means disclosed in the present application is not limited to the technical means disclosed in the above embodiments, and includes technical means formed by any combination of the above technical features. It should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application and these are considered to be within the scope of the present application.

Claims

1. A fixation device (100) for fixing a first external structure (200) relative to a second external structure (300), comprising:

a locking seat (30) for connecting with the first external structure (200), wherein a groove (31) is arranged on one side of the locking seat (30) facing the second external structure (300);

the fixing block (10) is used for being connected with the second external structure (300), and the fixing block (10) is rotatably arranged in the groove (31); and

the rotating piece (20), one end of the rotating piece (20) is used for being abutted against one side of the second external structure (300) departing from the fixed block (10), the other end of the rotating piece (20) penetrates through the second external structure (300) and the fixed block (10) and is connected to the locking base (30), and the rotating piece (20) is rotatably connected with the locking base (30) relatively;

wherein, the inner wall of the groove (31) is provided with a first friction surface (311), the fixed block (10) is circumferentially provided with a second friction surface (111), and the rotating member (20) is configured to adjust the position of the fixed block (10) in the groove (31) so as to change the mutual abutting and overlapping area of the first friction surface (311) and the second friction surface (111).

2. A fastening device (100) according to claim 1, wherein the distance from the first friction surface (311) to the axis of the rotating element (20) increases from the first outer structure (200) to the second outer structure (300), and the distance from the second friction surface (111) to the axis of the rotating element (20) increases from the first outer structure (200) to the second outer structure (300).

3. The fastening device (100) of claim 1, wherein the fastening device (100) further comprises a first washer (40), the first washer (40) being received in the recess (31) between the first friction surface (311) and the second friction surface (111), the first washer (40) having a bore that increases from the first outer structure (200) to the second outer structure (300).

4. The fixing device (100) according to claim 1, wherein the fixing device (100) further comprises a first elastic member (50), the first elastic member (50) is received in the groove (31) and sleeved outside the rotating member (20), one end of the first elastic member (50) abuts against the bottom wall of the locking seat (30), and the other end abuts against the end wall of the fixing block (10).

5. The fastening device (100) according to claim 4, wherein the locking seat (30) further comprises a guiding post (36) in the groove (31), the guiding post (36) extends towards the fastening block (10), and the first elastic member (50) is located in the guiding post (36) or is sleeved outside the guiding post (36).

6. The fixing device (100) according to claim 5, wherein the fixing device (100) further comprises a second washer (60), the second washer (60) is sleeved outside the guide post (36), the fixing block (10) is provided with a limiting groove (11), the second washer (60) is arranged in the limiting groove (11), and the second washer (60) is located between the inner wall of the limiting groove (11) and the side wall of the guide post (36).

7. The fixing device (100) according to claim 1, wherein the rotating member (20) comprises a connecting portion (21) and a driving portion (23) which are sequentially connected, the driving portion (23) is used for being abutted against one side of the second external structure (300) departing from the fixing block (10), one end of the connecting portion (21) is connected with the driving portion (23), the other end of the connecting portion penetrates through the second external structure (300), the fixing block (10) and is in threaded connection with the locking seat (30), and the connecting portion (21) and the driving portion (23) can synchronously rotate relative to the fixing block (10).

8. Fixing device (100) according to claim 7, characterized in that the locking seat (30) comprises a bottom plate (32) and a side plate (34), the first external structure (200) connects the bottom plate (32) and/or the side plate (34), the side plate (34) surrounds the bottom plate (32) and extends towards the second external structure (300) to form the groove (31), the groove (31) gradually increases the inner wall of the side plate (34) from the first external structure (200) to the second external structure (300) to form the first friction surface (311), the circumferential side wall of the fixing block (10) is the second friction surface (111), and the connecting portion (21) and the bottom plate (32) are screwed together.

9. The fastening device (100) according to claim 8, wherein the fastening block (10) and the end wall of the base plate (32) on the side facing the recess (31) are parallel, the fastening block (10), the second outer structure (300) and the drive part (23) are parallel to each other, and the connecting part (21) is perpendicular to the fastening block (10).

10. The fixing device (100) according to claim 7, further comprising a handle (70) for driving the rotating member (20) to rotate, wherein an end of the handle (70) is sleeved outside the driving portion (23), a plurality of first teeth portions (71) are circumferentially arranged in one end of the handle (70), a plurality of second teeth portions (24) are circumferentially arranged on an outer wall of the driving portion (23), and the plurality of first teeth portions (71) are engaged with the plurality of second teeth portions (24).

11. The fixing device (100) according to claim 10, wherein the fixing device (100) further comprises a connecting member (80) and a second elastic member (90), a cavity (72) is further disposed in the handle (70), one end of the connecting member (80) penetrates through the cavity wall of the cavity (72) and is connected to the driving portion (23), the other end of the connecting member is accommodated in the cavity (72), and the second elastic member (90) is accommodated in the cavity (72) and is sleeved outside the other end of the connecting member (80).

12. A luminaire (400) comprising:

a lamp body (410) having a first outer structure (200) disposed thereon;

a bracket (420) on which a second external structure (300) is provided;

the fixing device (100) according to any one of claims 1 to 11, wherein the fixing block (10) of the fixing device (100) is connected to the second external structure (300), the locking seat (30) of the fixing device (100) is connected to the first external structure (200), one end of the rotating member (20) of the fixing device (100) is used for abutting against one side of the second external structure (300) away from the fixing block (10), and the other end of the rotating member (20) penetrates through the second external structure (300), the fixing block (10) and is connected to the locking seat (30) to connect the lamp body (410) and the bracket (420).