CN211180494U

CN211180494U - Light portable focus following device

Info

Publication number: CN211180494U
Application number: CN201922166450.9U
Authority: CN
Inventors: 曾文凭; 周科峰
Original assignee: Tilta Technology Co ltd
Current assignee: Tilta Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-04
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a light-duty portable burnt ware of following, including ripples box, hand wheel subassembly, follow burnt subassembly, drive gear subassembly, driven gear subassembly and the extension piece that is used for the outside pipe of fixed mounting. The focus follower has a simple structure, can realize focus following, and can properly adjust the occupied space of the focus follower by rotating and adjusting the angle between the expansion piece and the wave box body, so that the occupied space of the focus follower is reduced, and the focus follower is convenient to carry; the volume of the focus follower can be reduced, and the focus follower can be arranged at any end of the driven gear assembly according to actual conditions, and is positioned at the left side or the right side of the wave box body, so that the applicable occasions are increased.

Description

Light portable focus following device

Technical Field

The utility model belongs to the equipment field of making a video recording, in particular to follow burnt ware of camera.

Background

The focus follower is a necessary single lens reflex video accessory for controlling the depth of field when a single lens reflex camera shoots a movie or a video, and mainly plays a role in shooting the video and controlling the focus of a lens in real time in dynamic video shooting. Currently, in the field of photography, a photographer needs to capture a picture by rotating a lens focusing ring and an aperture when taking a video. The focus follower is a device which is convenient and can accurately control focusing.

The existing coke follower usually adopts a gear transmission mode, the installation mode adopts double-guide-rail assembly, and the existing coke follower is heavy, inconvenient to carry and large in burden on a user; the existing coke follower fixing mode mostly adopts a double-guide-rail clamping placement mode, so that the application occasion is single, and the expansion performance is insufficient; the AB limit point of the existing coke following device is easy to lose, so that the accurate positioning cannot be realized.

Patent application CN201320170815.5 discloses a mechanical type is with burnt ware, including adjust knob, drive mechanism and follow the burnt wheel, drive mechanism includes a pair of initiative bevel gear and the driven bevel gear that meshes mutually, adjust knob and initiative bevel gear pass through the coaxial fixed setting of main pivot, driven bevel gear and follow the burnt wheel through from the coaxial fixed setting of pivot, the initiative bevel gear passes through the fix with screw on main pivot, and the driven bevel gear passes through the fix with screw in the follow pivot for thereby prevent that the axial of bevel gear from moving and ensure the inseparable meshing between initiative bevel gear and the driven bevel gear. The utility model provides a mechanical type is with burnt ware realizes becoming angle transmission through a pair of bevel gear meshing, passes through the axle transmission moment of torsion and gives the initiative bevel gear when rotatory adjust knob, and the meshing of initiative bevel gear drives driven bevel gear and rotates, and driven bevel gear rotates through driving from the pivot with burnt wheel to realize the transmission of power; the transmission ratio is good, the synchronism is high, the structure is simple, and the installation and the use are convenient.

However, the application is single, and the occupied space of the focus follower cannot be reduced.

Disclosure of Invention

In order to solve the problems, the utility model provides a light portable coke follower which has simple structure, can realize coke following, and can properly adjust the occupied space of the coke follower by rotating and adjusting the angle between an expansion piece and a wave box body, thereby reducing the occupied space of the coke follower and being convenient to carry; the volume of the focus follower can be reduced, and the focus follower can be arranged at any end of the driven gear assembly according to actual conditions, and is positioned at the left side or the right side of the wave box body, so that the applicable occasions are increased.

Another object of the utility model is to provide a light portable coke-following device, which has reasonable structure, can reduce the mechanical loss between the components and prolong the service life; can carry out the multi-angle to outside pipe through the angle between adjusting extension piece and the ripples case and adjust, strengthen the suitability, can be anti-skidding, can carry on spacingly to can improve spacing slider's connection steadiness.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a light portable focus follower comprises a bellows body, a hand wheel assembly, a focus follower assembly, a driving gear assembly, a driven gear assembly and an expansion piece for fixedly mounting an external circular tube; the focus following assembly is movably connected with the external lens focus following ring and drives the external lens focus following ring to rotate by an angle; the expansion piece is movably arranged at the lower part of the wave box body, and the angle between the expansion piece and the wave box body is adjusted by rotating the expansion piece; the hand wheel assembly and the focus following assembly are both arranged on the bellows body; the driving gear assembly and the driven gear assembly are both arranged in the wave box body, are movably connected and are driven to rotate by the driving gear assembly; one end of the driving gear assembly extends out of the front side wall of the bellows body and is fixedly connected with the hand wheel assembly, two end parts of the driven gear assembly respectively extend out of the left side wall and the right side wall of the bellows body, and the focus following assembly is fixedly connected to any one end of the driven gear assembly; the hand wheel assembly is rotated to enable the driving gear assembly to rotate, so that the driven gear assembly is driven to rotate, and the coke following assembly is rotated by the rotation angle to follow the coke.

In the utility model, the focus following device comprises a bellows body, a hand wheel component, a focus following component, a driving gear component, a driven gear component and an expansion piece, and has simple structure; because the expansion piece is movably arranged at the lower part of the wave box body, and the angle between the expansion piece and the wave box body is adjusted by rotating the expansion piece, the occupied space of the focus follower can be properly adjusted by rotating and adjusting the angle between the expansion piece and the wave box body, so that the occupied space of the focus follower is reduced, the carrying is convenient, for example, the expansion piece is adjusted to be horizontal and closer to the wave box body, and the occupied space can be reduced; in addition, because the driving gear assembly and the driven gear assembly are both arranged in the wave box body, the space in the wave box body is reasonably utilized, and the volume of the focus follower can be reduced; the focus following component can be arranged at any end of the driven gear component according to actual conditions and is positioned at the left side or the right side of the bellows body, so that the applicable occasions are increased; when the device is used, the hand wheel assembly is rotated to enable the driving gear assembly to rotate and drive the driven gear assembly to rotate, so that the focus following gear assembly rotates, and then the external lens is driven to rotate by the rotation angle of the focus following ring to follow focus.

Specifically, the wave box body comprises a wave box front cover, a wave box left cover, a wave box right cover and a wave box, wherein the wave box is internally enclosed to form an installation space; the wave box front cover is fixedly arranged on the front side wall of the wave box, and the wave box left cover and the wave box right cover are respectively and fixedly arranged on the left side wall and the right side wall of the wave box; the driving gear assembly and the driven gear assembly are fixedly arranged in the wave box, one end of the driving gear assembly extends out of the front cover of the wave box, two ends of the driven gear assembly respectively extend out of the left cover and the right cover of the wave box, and the driving gear assembly is positioned below the driven gear assembly; the hand wheel component moves on the front cover of the wave box. The ripples box includes ripples case protecgulum, ripples case left side lid, ripples case right side lid and ripples case, simple structure, and driving gear assembly is located driven gear assembly's below, rational in infrastructure.

Specifically, the driving gear assembly comprises a driving shaft, a driving gear, a main shaft sleeve, a damping sleeve, a front bearing and a rear bearing; the driving gear, the main shaft sleeve and the damping sleeve are fixedly arranged on the driving shaft, and the main shaft sleeve and the damping sleeve are respectively arranged on two sides of the driving gear; the front bearing and the rear bearing are also arranged on the driving shaft, the front bearing is positioned on one side of the damping sleeve, which is far away from the driving gear, the rear bearing is positioned on one side of the main shaft sleeve, which is far away from the driving gear, and the driving shaft is arranged inside the wave box through the front bearing and the rear bearing; the driving gear is movably connected with the driven gear assembly, and one end of the driving shaft, which is close to the front bearing, extends out of the front cover of the wave box and then is fixedly connected with the hand wheel assembly. The main shaft sleeve and the damping sleeve are arranged on two sides of the driving gear, axial series motion of the driving gear can be reduced, mechanical loss between parts can be reduced, and the service life is prolonged.

Specifically, the driven gear assembly comprises a driven shaft and a driven gear; driven gear fixed mounting is on the driven shaft, and driven gear and driving gear meshing, still installs driven bearing on the both ends of driven shaft, and installs the driven shaft in the ripples case through driven bearing, and the both ends of driven shaft are covered from ripples case left side and ripples case right side respectively and are stretched out, follow the arbitrary end at the driven shaft of burnt subassembly. The driven gear assembly comprises a driven shaft and a driven gear, the structure is simple, the driven shaft is installed in the wave box through a driven bearing, and abrasion is reduced.

Specifically, the focus following component comprises a focus following gear, a positioning block and a knurled screw; the positioning block is fixedly arranged on the inner side of the follow focus gear, fixing holes are formed in two ends of the driven shaft, internal threads are arranged in the fixing holes, screw through holes are formed in the follow focus gear and the positioning block, the knurled screw penetrates through the screw through holes and then is in threaded connection with the fixing holes, and the knurled screw fixedly installs the follow focus gear at any end of the driven shaft; the left wave box cover and the right wave box cover are both provided with driven shaft accommodating holes, and two end parts of the driven shaft are accommodated in the driven shaft accommodating holes; the focus following gear is meshed with the focus following ring of the external lens. The edges of the two ends of the driven shaft can be irregularly designed, and the assembly between the two ends of the driven shaft and the coke-following gear is simple; the arrangement of the positioning block can reduce abrasion.

Specifically, the extension includes a single tube clamp for mounting an outer circular tube; the back side of the upper part of the single clamping pipe clamping piece integrally extends out of an expansion mounting column, the lower part of the wave box is provided with an expansion mounting hole, and the single clamping pipe clamping piece is mounted in the expansion mounting hole through the expansion mounting column; an auxiliary fixing hole is formed in the front side of the lower portion of the wave box and is located below a front cover of the wave box, an auxiliary fixing hand knob is connected to the auxiliary fixing hole in a threaded mode, and the auxiliary fixing hand knob extends into the auxiliary fixing hole to abut against the outer side wall of the expansion mounting column; the single-clamping-tube clamping piece lower part is provided with an external circular tube mounting hole, the external circular tube is mounted in the external circular tube mounting hole, the side wall of the single-clamping-tube clamping piece is provided with a fixed via hole, the fixed via hole is connected with an adjusting knob in a threaded mode, and the adjusting knob extends into the fixed via hole and is abutted to the outer side wall of the external circular tube.

During assembly, the expansion mounting column is firstly mounted in the expansion mounting hole, the angle between the expansion mounting column and the expansion mounting hole is adjusted, then the auxiliary fixing hand knob is screwed by hand, and the part of the auxiliary fixing hand knob in threaded connection with the auxiliary fixing hole is screwed in so as to be abutted against the outer side wall of the expansion mounting column for fixing; when the external circular pipe is installed, the external circular pipe is installed into the external circular pipe installation hole, and then the adjusting hand knob is screwed by hand to be abutted against the outer side wall of the external circular pipe so as to fix the external circular pipe; the angle between expansion piece and the ripples case can be adjusted to outside pipe multi-angle through adjusting to select optimum angle according to actual conditions. The round tube can be a 15mm round tube.

The adjustable hand knob comprises a hand knob screw, an adjustable hand knob, an expansion spring and an expansion fixing screw, wherein a hand knob screw mounting hole is formed in the adjustable hand knob, the upper part of the hand knob screw is elastically sleeved with the expansion spring and then is mounted in the hand knob screw mounting hole, and the hand knob screw is fixed in the hand knob screw mounting hole through the expansion fixing screw; the lower part of the hand-twisting screw is provided with external threads, and the lower part of the hand-twisting screw is in threaded connection with the fixed through hole.

Specifically, the hand wheel assembly comprises a hand wheel, a limiting block mounting shell, a limiting unit, an anti-skid outer ring and an outer ring; the limiting block mounting shell is fixedly mounted in the hand wheel, the anti-skid outer ring and the outer ring are both fixedly mounted on the outer side wall of the hand wheel, and the outer ring is positioned behind the anti-skid outer ring; the limiting block mounting shell is provided with an annular limiting slide rail, 2 limiting units are movably mounted on the limiting slide rail, and the limiting units can slide 360 degrees along the limiting slide rail to be randomly positioned; the hand wheel moves on the wave box front cover, and a movable gap is formed between the hand wheel and the wave box front cover; one end of the driving shaft close to the front bearing sequentially extends out of the wave box front cover and the limiting block mounting shell and then is fixedly mounted at the center of the hand wheel.

The limiting units are two in number, after assembly is completed, 2 limiting points can be set for a lens focal length in practical use, the limiting points are usually set by adjusting the positions of the limiting units on limiting slide rails, the two limiting points are generally called A, B limiting points, a controlled focal length interval can be limited, and finally a hand wheel is controlled to rotate, so that the follow-up accuracy is improved. The antiskid outer ring can be prevented from slipping caused by body fluid of the palm, and can be made of silica gel.

Specifically, the limiting unit comprises a limiting sliding block, a limiting column and a locking screw; the limiting sliding block is movably arranged on the limiting sliding rail and slides 360 degrees along the limiting sliding rail; a locking hole is formed in the inner side of the limiting sliding block, and a locking screw is arranged in the locking hole; the outer side of the limiting sliding block is provided with a limiting column mounting hole, an external thread is arranged on the limiting column, a locking threaded hole is also formed in the limiting column, and the limiting column is mounted in the limiting column mounting hole; when the limiting slide block is fixed, the locking screw is installed in the locking threaded hole in a threaded mode, the limiting slide block and the locking screw are interlocked, and the top of the limiting column extends out of the movable gap.

Spacing unit includes spacing slider, spacing post and locking screw, simple structure, and through establishing the external screw thread on spacing post to and locking screw hole, and when fixed spacing slider, locking screw threaded mounting is gone into locking screw threaded hole, makes to form the interlocking between spacing slider and the locking screw, can improve spacing slider's connection steadiness, prevents that spacing point from droing.

Specifically, hand wheel outside bottom is opened there is first fixed orifices, and it has the second fixed orifices that corresponds with first fixed orifices to open on the outer ring, and all fixed mounting has magnet in first fixed orifices and the second fixed orifices, through magnet with outer ring fixed mounting on the hand wheel bottom, improve outer ring installation stability, avoid skidding when following burnt outer ring.

The utility model has the advantages that:

compared with the prior art, the light portable coke follower has simple structure, and the occupied space of the coke follower can be properly adjusted by rotating the angle between the adjusting expansion piece and the wave box body, so that the occupied space of the coke follower is reduced, and the coke follower is convenient to carry; in addition, because the driving gear assembly and the driven gear assembly are both arranged in the wave box body, the space in the wave box body is reasonably utilized, and the volume of the focus follower can be reduced; the focus following assembly can be installed at any end of the driven gear assembly as the case may be, and is positioned at the left side or the right side of the bellows body, so as to increase the applicable occasions.

The focus follower has reasonable structure, can reduce the mechanical loss among components and prolong the service life; can carry out the multi-angle to outside pipe through the angle between adjusting extension piece and the ripples case and adjust, strengthen the suitability, can be anti-skidding, can carry on spacingly to can improve spacing slider's connection steadiness.

Drawings

Fig. 1 is a schematic structural view of a light portable coke-following device implemented by the present invention.

Fig. 2 is a schematic view of a partial structure of a light portable focus follower implemented by the present invention.

Fig. 3 is an exploded view of a lightweight portable coke-following device implemented by the present invention.

Fig. 4 is an enlarged schematic view of a portion I of fig. 3.

Fig. 5 is an enlarged schematic view of I I in fig. 3.

Fig. 6 is an enlarged structural view of ii portion in fig. 3.

Fig. 7 is an enlarged structural view of a portion IV of fig. 3.

Fig. 8 is an enlarged schematic view of a portion V in fig. 3.

Fig. 9 is a schematic diagram of an exploded view of the pinion assembly of the lightweight portable coke follower embodying the present invention.

Fig. 10 is an exploded view of the driven gear assembly of the lightweight portable coke follower embodying the present invention.

Fig. 11 is a schematic view showing a state of use of the light portable focus follower according to the present invention.

Fig. 12 is a schematic view showing another state of use of the light portable focus follower according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical scheme of the utility model as follows:

as shown in fig. 1-12, the light portable focus follower implemented by the present invention comprises a bellows body 1, a hand wheel assembly 2, a focus follower assembly 3, a driving gear assembly 4, a driven gear assembly 5 and an expansion member 7 for fixedly mounting an external circular tube 6; the focus following component 3 is movably connected with the external lens focus following ring 8, and the focus following component 3 drives the external lens focus following ring 8 to rotate by an angle; the expansion piece 7 is movably arranged at the lower part of the wave box body 1, and the angle between the expansion piece 7 and the wave box body 1 is adjusted by rotating the expansion piece 7; the hand wheel component 2 and the focus following component 3 are both arranged on the bellows body 1; the driving gear assembly 4 and the driven gear assembly 5 are both arranged in the bellows body 1, the driving gear assembly 4 is movably connected with the driven gear assembly 5, and the driving gear assembly 4 drives the driven gear assembly 5 to rotate; one end of the driving gear assembly 4 extends out of the front side wall of the bellows body 1 and is fixedly connected with the hand wheel assembly 2, two end parts of the driven gear assembly 5 respectively extend out of the left side wall and the right side wall of the bellows body 1, and the focus following assembly 3 is fixedly connected with any one end of the driven gear assembly 5; the hand wheel component 2 is rotated to enable the driving gear component 4 to rotate, so that the driven gear component 5 is driven to rotate, and the focus following component 3 is rotated by an angle to follow the focus.

In the utility model, the focus following device comprises a bellows body 1, a hand wheel component 2, a focus following component 3, a driving gear component 4, a driven gear component 5 and an expansion piece 7, and has simple structure; because the expansion piece 7 is movably arranged at the lower part of the wave box body 1, and the angle between the expansion piece 7 and the wave box body 1 is adjusted by rotating the expansion piece 7, the occupied space of the focus follower can be properly adjusted by rotating and adjusting the angle between the expansion piece 7 and the wave box body 1, so that the occupied space of the focus follower is reduced, the carrying is convenient, for example, the expansion piece 7 is adjusted to be horizontal and is closer to the wave box body 1, and the occupied space can be reduced; in addition, because the driving gear assembly 4 and the driven gear assembly 5 are both arranged in the bellows body 1, the space in the bellows body 1 is reasonably utilized, and the volume of the focus follower can be reduced; the focus following component 3 can be installed at any end of the driven gear component 5 as the actual situation is, and is positioned at the left side or the right side of the bellows body 1, so that the applicable occasions are increased; when using, rotate hand wheel assembly 2 and make driving gear assembly 4 rotate, drive driven gear assembly 5 and rotate to it is rotatory to make to follow burnt gear assembly 3, and then drives 8 rotation angles of external camera lens follow focus ring, follows burnt.

The focusing device can be made of light materials such as aluminum alloy and nylon.

In the embodiment, the wave box body 1 comprises a wave box front cover 11, a wave box left cover 12, a wave box right cover 13 and a wave box 14 which is enclosed by the wave box front cover and the wave box right cover to form an installation space; the wave box front cover 11 is fixedly arranged on the front side wall of the wave box 14, and the wave box left cover 12 and the wave box right cover 13 are respectively fixedly arranged on the left side wall and the right side wall of the wave box 14; the driving gear assembly 4 and the driven gear assembly 5 are fixedly arranged in the wave box 14, one end of the driving gear assembly 4 extends out of the wave box front cover 11, two ends of the driven gear assembly 5 respectively extend out of the wave box left cover 12 and the wave box right cover 13, and the driving gear assembly 4 is positioned below the driven gear assembly 5; the handwheel component 2 moves on the wave box front cover 11.

Ripples box 1 is including ripples case protecgulum 11, ripples case left side lid 12, ripples case right side lid 13 and ripples case 14, simple structure, and driving gear assembly 4 is located driven gear assembly 2's below, rational in infrastructure. The wave box front cover 11 and the wave box left cover 12 can be fixed on the wave box 14 through screws 01.

In the present embodiment, the driving gear assembly 4 includes a driving shaft 41, a driving gear 42, a spindle sleeve 43, a damping sleeve 44, a front bearing 45, and a rear bearing 46; the driving gear 42, the spindle sleeve 43 and the damping sleeve 44 are all fixedly arranged on the driving shaft 41, and the spindle sleeve 43 and the damping sleeve 44 are respectively arranged on two sides of the driving gear 42; a front bearing 45 and a rear bearing 46 are also arranged on the driving shaft 41, the front bearing 45 is positioned on one side of the damping sleeve 44 away from the driving gear 42, the rear bearing 46 is positioned on one side of the main shaft sleeve 43 away from the driving gear 42, and the driving shaft 41 is arranged inside the wave box 14 through the front bearing 45 and the rear bearing 46; the driving gear 42 is movably connected with the driven gear assembly 5, and one end of the driving shaft 41 close to the front bearing 45 extends out of the front cover 11 of the wave box and then is fixedly connected with the hand wheel assembly 2.

The main shaft sleeve 43 and the damping sleeve 44 are arranged on two sides of the driving gear 42, axial movement of the driving gear 42 can be reduced, mechanical loss among components can be reduced, and the service life is prolonged.

In the present embodiment, the driven gear assembly 5 includes a driven shaft 51 and a driven gear 52; the driven gear 52 is fixedly arranged on the driven shaft 51, the driven gear 52 is meshed with the driving gear 42, driven bearings 53 are further arranged at two ends of the driven shaft 51, the driven shaft 51 is arranged in the wave box 14 through the driven bearings 53, two ends of the driven shaft 51 respectively extend out of the wave box left cover 12 and the wave box right cover 13, and the focus following assembly 3 is fixed at any end of the driven shaft 51. The driven gear assembly 5 comprises a driven shaft 51 and a driven gear 52, has a simple structure, and reduces abrasion when the driven shaft 51 is installed in the wave box 14 through a driven bearing 53.

The driving gear 42 is fixed to the driving shaft 41 by a screw 01, and the driven gear 52 is fixed to the driven shaft 51 by a screw 01, so that the driving gear 42 and the driven gear 52 are prevented from moving in the axial direction, and the driving gear 42 and the driven gear 52 can be both helical gears, thereby ensuring tight engagement between the driving gear 42 and the driven gear 52.

In the present embodiment, the focus following assembly 3 includes a focus following gear 31, a positioning block 32 and a knurled screw 33; the positioning block 32 can be fixedly installed on the inner side of the follow focus gear 31 by using a screw 01, fixing holes 54 are formed in two ends of the driven shaft 51, internal threads are formed in the fixing holes 54, screw through holes 34 are formed in the follow focus gear 31 and the positioning block 32, a knurled screw 33 penetrates through the screw through hole 34 and then is in threaded connection with the fixing hole 54, and the follow focus gear 31 is fixedly installed at any end (the left end or the right end) of the driven shaft 51 by the knurled screw 33; the wave box left cover 12 and the wave box right cover 13 are both provided with driven shaft accommodating holes 15, and two end parts of the driven shaft 51 are accommodated in the driven shaft accommodating holes 15; the focus following gear 31 meshes with the outer lens focus following ring 8. The edges of the two ends of the driven shaft 51 can be irregularly designed, and the assembly between the two ends of the driven shaft 51 and the follow focus gear 31 is simple; the positioning block 32 can reduce wear.

In this embodiment, the extension 7 comprises a single bayonet catch 71 for mounting the outer tubular 6; the upper back side of the single clamping pipe clamping piece 71 integrally extends out of the expansion mounting column 72, the lower part of the wave box 1 is provided with an expansion mounting hole 16, and the single clamping pipe clamping piece 71 is mounted in the expansion mounting hole 16 through the expansion mounting column 72; an auxiliary fixing hole 17 is formed in the front side of the lower portion of the wave box 1, the auxiliary fixing hole 17 is located below the wave box front cover 11, an auxiliary fixing hand knob 18 is connected to the auxiliary fixing hole 17 in a threaded mode, and the auxiliary fixing hand knob 18 extends into the auxiliary fixing hole 17 and abuts against the outer side wall of the expansion mounting column 72; the lower portion of the single-clamping pipe clamping piece 71 is provided with an outer circular pipe mounting hole 73, the outer circular pipe 6 is mounted in the outer circular pipe mounting hole 73, the side wall of the single-clamping pipe clamping piece 71 is provided with a fixing through hole 74, an adjusting hand knob 75 is connected to the fixing through hole 74 in a threaded mode, and the adjusting hand knob 75 extends into the fixing through hole 74 to abut against the outer side wall of the outer circular pipe 6.

Wherein, still fixed mounting has the erection column to prevent falling piece 76 in extension mounting hole 16, and the erection column is prevented falling and is equipped with the external screw thread on the piece 76, can open internal thread hole (not shown) on the extension erection column 72, and after extension erection column 72 installed in extension mounting hole 16, the piece 76 threaded connection is prevented falling in the internal thread hole on the extension erection column 72 by the erection column, improves the installation steadiness of extension piece 7 and ripples case 1.

During assembly, the expansion mounting column 72 is firstly mounted in the expansion mounting hole 16, the angle between the expansion mounting column 72 and the expansion mounting hole 16 is adjusted, then the auxiliary fixing hand knob 18 is screwed by hand, and the part of the auxiliary fixing hand knob 18 in threaded connection with the auxiliary fixing hole 17 is screwed in to be abutted against the outer side wall of the expansion mounting column 72 for fixing; when the outer circular tube 6 is installed, the outer circular tube 6 is installed into the outer circular tube installation hole 73, and then the adjusting knob 75 is screwed by hand to be abutted against the outer side wall of the outer circular tube 6, so that the outer circular tube 6 is fixed; the external circular tube 6 can be adjusted at multiple angles by adjusting the angle between the expansion piece 7 and the wave box 1, so that the optimal angle can be selected according to actual conditions. The round tube 6 can be a 15mm round tube.

The expansion mounting holes 73 can be consistent with the shape and size of the external circular tube mounting holes 73, so that a plurality of expansion pieces 7 can be used for mutual expansion in an end-to-end mode, namely, the first expansion piece 7 is connected with the wave box 1, the second expansion piece 7 is mounted in the external circular tube mounting holes 73 and sequentially connected in an end-to-end mode, application occasions are increased, and applicability is enhanced.

The adjusting hand knob 75 comprises a hand knob screw 751, an adjustable hand knob 752, an expansion spring 753 and an expansion fixing screw 754, wherein the adjustable hand knob 752 is provided with a hand knob screw mounting hole 755, the upper part of the hand knob screw 751 is elastically sleeved with the expansion spring 753 and then is mounted in the hand knob screw mounting hole 755, and the hand knob screw 751 is fixed in the hand knob screw mounting hole 755 through the expansion fixing screw 754; the lower portion of the hand screw 751 is externally threaded, and the lower portion of the hand screw 751 is threadedly coupled to the fixed via 74.

The auxiliary fixing hand knob 18 comprises an auxiliary handle 181, an auxiliary screw 182 and an auxiliary fixing screw 183, wherein an auxiliary screw mounting hole 184 is formed in the auxiliary handle 181, the top of the auxiliary screw 182 is mounted in the auxiliary screw mounting hole 184 and is fixed in the auxiliary screw mounting hole 184 through the auxiliary fixing screw 183, an external thread is arranged at the lower part of the auxiliary screw 182, and the lower part of the auxiliary screw 182 is in threaded connection with the auxiliary fixing hole 17; the auxiliary screw 182 can be screwed in and out by screwing the auxiliary handle 181 by hand.

In this embodiment, the handwheel assembly 2 includes a handwheel 21, a stopper mounting shell 22, a stopper unit 23, an anti-skid outer ring 24 and an outer ring 25; the limiting block mounting shell 22 can be fixedly mounted in the hand wheel 21 through screws, the anti-skid outer ring 24 and the outer ring 25 are both fixedly mounted on the outer side wall of the hand wheel 21, and the outer ring 25 is located behind the anti-skid outer ring 24; the limiting block mounting shell 22 is provided with an annular limiting

slide rail

26, 2 limiting units 23 are movably mounted on the limiting slide rail 26, and the limiting units 23 slide along the limiting slide rail 26360 degrees to be positioned at will; the hand wheel 21 moves on the wave box front cover 11, and a moving gap 02 is formed between the hand wheel 21 and the wave box front cover 11; one end of the driving shaft 41 close to the front bearing 45 sequentially extends out of the wave box front cover 11 and the limiting block mounting shell 22 and then is fixedly mounted in the center of the hand wheel 21.

After the assembly is completed, 2 limiting points can be set for the focal length of the lens in actual use, the limiting points are usually set by adjusting the positions of the limiting units 23 on the limiting slide rails 26, the two limiting points are the A, B limiting points, the controlled focal length region can be limited, and finally the hand wheel 21 is controlled to rotate, so that the tracking accuracy is improved. The antiskid outer ring 24 can avoid skidding caused by body fluid of the palm, and the antiskid outer ring 24 can be made of silica gel.

Wherein, still fixed mounting has the decoration circle 27 on the hand wheel 21, can paste the decoration on the decoration circle 27.

In the present embodiment, the limit unit 23 includes a limit slider 231, a limit post 232, and a lock screw 233; the limiting slide block 231 is movably mounted on the limiting slide rail 26, and the limiting slide block 231 slides along the limiting slide rail 26360 degrees; the inner side of the limiting slide block 231 is provided with a locking hole 234, and a locking screw 233 is arranged in the locking hole 234; a limiting column mounting hole 235 is formed in the outer side of the limiting sliding block 231, external threads are formed on the limiting column 232, a locking threaded hole 236 is further formed in the limiting column 232, and the limiting column 232 is mounted in the limiting column mounting hole 235; when the limiting slide block 231 is fixed, the locking screw 233 is screwed into the locking threaded hole 236, so that the limiting slide block 231 and the locking screw 233 are interlocked, and the top of the limiting column 232 extends out of the movable gap 02.

The limiting unit 23 comprises a limiting slide block 231, a limiting column 232 and a locking screw 233, the structure is simple, external threads are arranged on the limiting column 232, the locking screw hole 236 is formed, when the limiting slide block 231 is fixed, the locking screw 233 is installed in the locking screw hole 236 in a threaded mode, interlocking is formed between the limiting slide block 231 and the locking screw 233, the connection stability of the limiting slide block 231 can be improved, and the limiting point is prevented from falling off.

In this embodiment, the bottom of the outer side of the hand wheel 21 is provided with a first fixing hole 211, the outer ring 25 is provided with a second fixing hole (not shown) corresponding to the first fixing hole 211, the first fixing hole 211 and the second fixing hole are both fixedly provided with a magnet 28, the outer ring 25 is fixedly arranged on the bottom of the hand wheel 21 through the magnet 28, the installation stability of the outer ring 25 is improved, and the outer ring is prevented from slipping when being followed with a coke.

The utility model has the advantages that:

The above description is intended to be illustrative of the present invention and is not intended to be limiting, and all such modifications, equivalents and improvements as fall within the spirit and scope of the invention are intended to be included therein.

Claims

1. A light portable focus follower is characterized by comprising a bellows body, a hand wheel component, a focus follower component, a driving gear component, a driven gear component and an expansion piece for fixedly mounting an external circular tube; the focus following assembly is movably connected with the external lens focus following ring and drives the external lens focus following ring to rotate by an angle; the expansion piece is movably arranged at the lower part of the wave box body, and the angle between the expansion piece and the wave box body is adjusted by rotating the expansion piece;

the hand wheel assembly and the focus following assembly are both arranged on the bellows body; the driving gear assembly and the driven gear assembly are both arranged in the wave box body, and are movably connected, and the driving gear assembly drives the driven gear assembly to rotate;

one end of the driving gear assembly extends out of the front side wall of the bellows body and is fixedly connected with the hand wheel assembly, two end parts of the driven gear assembly respectively extend out of the left side wall and the right side wall of the bellows body, and the focus following assembly is fixedly connected to any one end of the driven gear assembly; the hand wheel assembly is rotated to enable the driving gear assembly to rotate, so that the driven gear assembly is driven to rotate, and the coke following assembly is rotated by the rotation angle to follow the coke.

2. The lightweight portable focus tracker of claim 1, wherein said bellows body comprises a bellows front cover, a bellows left cover, a bellows right cover and a bellows enclosing an installation space therein; the wave box front cover is fixedly arranged on the front side wall of the wave box, and the wave box left cover and the wave box right cover are respectively fixedly arranged on the left side wall and the right side wall of the wave box; the driving gear assembly and the driven gear assembly are fixedly arranged in the wave box, one end of the driving gear assembly extends out of the front cover of the wave box, two ends of the driven gear assembly respectively extend out of the left cover and the right cover of the wave box, and the driving gear assembly is positioned below the driven gear assembly; the hand wheel component moves on the wave box front cover.

3. The lightweight portable focus tracker of claim 2 wherein said pinion assembly comprises a pinion shaft, a pinion gear, a spindle sleeve, a damping sleeve, a front bearing and a rear bearing; the driving gear, the main shaft sleeve and the damping sleeve are fixedly arranged on the driving shaft, and the main shaft sleeve and the damping sleeve are respectively arranged on two sides of the driving gear; the front bearing and the rear bearing are also arranged on the driving shaft, the front bearing is positioned on one side of the damping sleeve far away from the driving gear, the rear bearing is positioned on one side of the main shaft sleeve far away from the driving gear, and the driving shaft is arranged inside the wave box through the front bearing and the rear bearing; the driving gear is movably connected with the driven gear assembly, and one end of the driving shaft, which is close to the front bearing, extends out of the front cover of the wave box and then is fixedly connected with the hand wheel assembly.

4. The lightweight portable focus follower of claim 3, wherein said driven gear assembly comprises a driven shaft and a driven gear; driven gear fixed mounting still install driven bearing on the driven shaft, and driven gear and driving gear meshing, still install driven bearing on the both ends of driven shaft, and pass through driven bearing installs the driven shaft in the ripples case, the both ends of driven shaft are stretched out from ripples case left side lid and ripples case right side lid respectively, follow the arbitrary end at the driven shaft of burnt subassembly fixation.

5. The lightweight portable focus follower of claim 4, wherein said focus follower assembly comprises a focus follower gear, a locating block and knurled screws; the positioning block is fixedly installed on the inner side of the follow focus gear, fixing holes are formed in two ends of the driven shaft, internal threads are arranged in the fixing holes, screw through holes are formed in the follow focus gear and the positioning block, the knurled screws penetrate through the screw through holes and then are in threaded connection with the fixing holes, and the follow focus gear is fixedly installed at any end of the driven shaft through the knurled screws;

the wave box left cover and the wave box right cover are both provided with driven shaft accommodating holes, and two end parts of the driven shaft are accommodated in the driven shaft accommodating holes; the focus following gear is meshed with the focus following ring of the external lens.

6. The lightweight portable focus tracker of claim 2, wherein said extension member comprises a single tube clamp for mounting an outer tube; an expansion mounting column integrally extends from the back side of the upper part of the single clamping pipe clamping piece, an expansion mounting hole is formed in the lower part of the wave box, and the single clamping pipe clamping piece is mounted in the expansion mounting hole through the expansion mounting column;

an auxiliary fixing hole is formed in the front side of the lower portion of the wave box and is located below a front cover of the wave box, an auxiliary fixing hand knob is connected to the auxiliary fixing hole in a threaded mode, and the auxiliary fixing hand knob extends into the auxiliary fixing hole to abut against the outer side wall of the expansion mounting column; the utility model discloses a single calorie of pipe fastener, including single calorie of pipe fastener, outer pipe mounting hole, fixed via hole, threaded connection has the regulation hand to turn round on the fixed via hole, the regulation hand is turned round and is stretched into the lateral wall counterbalance with outside pipe from fixed via hole and hold in the outside pipe mounting hole is opened to single calorie of pipe fastener lower part, and outside pipe is installed in outside pipe mounting hole, the lateral wall of single calorie of pipe fastener is opened there is fixed via hole, threaded connection.

7. The lightweight portable focus follower as recited in claim 6, wherein said adjusting knob comprises a knob screw, an adjustable knob, an extension spring and an extension fixing screw, said adjustable knob is provided with a knob screw mounting hole, the upper portion of said knob screw is elastically sleeved with said extension spring and then is mounted in said knob screw mounting hole, and said knob screw is fixed in said knob screw mounting hole by said extension fixing screw; the lower part of the hand-twisting screw is provided with external threads, and the lower part of the hand-twisting screw is in threaded connection with the fixed through hole.

8. The light-duty portable coke following device of claim 3, wherein the hand wheel assembly comprises a hand wheel, a stopper mounting shell, a stopper unit, an anti-slip outer ring and an outer ring; the limiting block mounting shell is fixedly mounted in the hand wheel, the anti-skid outer ring and the outer ring are both fixedly mounted on the outer side wall of the hand wheel, and the outer ring is located behind the anti-skid outer ring; the limiting block mounting shell is provided with an annular limiting slide rail, 2 limiting units are movably mounted on the limiting slide rail, and the limiting units can slide 360 degrees along the limiting slide rail to be randomly positioned; the hand wheel moves on the wave box front cover, and a movable gap is formed between the hand wheel and the wave box front cover; one end of the driving shaft close to the front bearing sequentially extends out of the wave box front cover and the limiting block mounting shell and then is fixedly mounted at the center of the hand wheel.

9. The lightweight portable focus follower as recited in claim 8, wherein said stop unit comprises a stop slider, a stop post and a locking screw; the limiting sliding block is movably mounted on the limiting sliding rail and slides 360 degrees along the limiting sliding rail; the inner side of the limiting sliding block is provided with a locking hole, and the locking screw is arranged in the locking hole; a limiting column mounting hole is formed in the outer side of the limiting sliding block, external threads are formed on the limiting column, a locking threaded hole is formed in the limiting column, and the limiting column is mounted in the limiting column mounting hole; when the limiting slide block is fixed, the locking screw is installed in the locking threaded hole in a threaded mode, the limiting slide block and the locking screw are interlocked, and the top of the limiting column extends out of the movable gap.

10. The lightweight portable focus follower as recited in claim 8, wherein a first fixing hole is formed at the bottom of the outer side of said hand wheel, a second fixing hole corresponding to said first fixing hole is formed in said outer ring, magnets are fixedly mounted in both said first fixing hole and said second fixing hole, and said outer ring is fixedly mounted on the bottom of said hand wheel through said magnets.