CN207820057U - One kind having external VR cameras - Google Patents

One kind having external VR cameras Download PDF

Info

Publication number
CN207820057U
CN207820057U CN201820192161.9U CN201820192161U CN207820057U CN 207820057 U CN207820057 U CN 207820057U CN 201820192161 U CN201820192161 U CN 201820192161U CN 207820057 U CN207820057 U CN 207820057U
Authority
CN
China
Prior art keywords
fixedly connected
cameras
upper chuck
chuck
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201820192161.9U
Other languages
Chinese (zh)
Inventor
易志斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanchang helitai Technology Co., Ltd
Original Assignee
Nanchang BYD Electronic Components Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanchang BYD Electronic Components Co Ltd filed Critical Nanchang BYD Electronic Components Co Ltd
Priority to CN201820192161.9U priority Critical patent/CN207820057U/en
Application granted granted Critical
Publication of CN207820057U publication Critical patent/CN207820057U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Accessories Of Cameras (AREA)

Abstract

The utility model is related to VR cameras fields, and it discloses a kind of with external VR cameras, including the next chuck, both sides inside the bottom chuck are installed with telescopic device, the top of the telescopic device is fixedly connected with upper chuck, the front of the upper chuck is fixedly connected with locating piece, and the quantity of the locating piece is four, and four locating pieces with two for one group be symmetrically distributed in upper chuck it is positive above and below.There should be external VR cameras, it is acted on by the elastic force of spring, so that upper chuck and the next chuck entangle the quadrangle of mobile phone and step up, utilize the threaded function of screw rod and upper chuck side so that pressing plate coordinates the side wall of upper chuck to compress mobile phone, to fixed VR cameras, common external VR cameras are avoided to pass through on clip loading mobile phone, so that the fixed effect of VR cameras is bad, it is easy to fall off, VR camera lenses is caused to fall damage.

Description

One kind having external VR cameras
Technical field
The utility model is related to VR cameras fields, specially a kind of to have external VR cameras.
Background technology
VR photographies are referred to and are truly recorded site environment using the writing function of photography, then after being carried out by computer Phase is handled, to realize that three-dimensional space representation, VR photographies are to carry out one kind of virtual reappearance to real scene by shooting on the spot Emerging technology can more approach the true environment in scene, make one to generate visual experience on the spot in person, VR camera works pass through to ring Border, scene or specific still life carry out 360 ° on the spot or shooting in kind, then splice software with picture and picture be spliced into 360 degree Panorama sketch, then the two-dimension picture of scene or object all angles is modeled to have certain interaction using virtual roaming software Function, spacial flex with 3-D effect, make onlooker really obtain strength, shock visual experience, reach on the spot in person, With the development of science and technology, people using mobile phone by by VR external cameras to mobile phone, being shot.
However common external VR cameras pass through on clip loading mobile phone so that the fixed effect of VR cameras is bad, It is easy to fall off, causes VR camera lenses to fall damage, and common external VR cameras, due to clip size issue, VR cameras are fixed Limited orientation, all handset demands cannot be met so that the practicality is not high.
Utility model content
(One)The technical issues of solution
In view of the deficiencies of the prior art, the utility model provides a kind of with external VR cameras, has fixed effect The advantages that good and fixed range is wide, solves common external VR cameras by clip loading mobile phone so that VR cameras Fixed effect it is bad, be easy to fall off, VR camera lenses caused to fall damage, and common external VR cameras are asked due to clip size Topic, the fixed limited orientation of VR cameras cannot meet all handset demands so that the not high problem of the practicality.
(Two)Technical solution
To realize that above-mentioned good fixing effect and the wide purpose of fixed range, the utility model provide the following technical solutions:One There is kind external VR cameras, including the next chuck, the both sides inside the bottom chuck to be installed with telescopic device, institute The top for stating telescopic device is fixedly connected with upper chuck, and the front of the upper chuck is fixedly connected with locating piece, described fixed Position block quantity be four, and four locating pieces with two for one group be symmetrically distributed in upper chuck it is positive above and below, It is fixedly connected with same threaded rod between locating piece described in one group, moving tube, the movement are movably installed on the threaded rod The bottom movable sleeve of pipe is connected to mobile bar, and the positive middle part of mobile bar offers rack, the both sides on the mobile bar top The middle part movable sleeve of the limited block being fixedly connected with inside moving tube, the limited block is connected to slide-bar, the slide-bar Both ends are fixedly connected at the top and bottom of mobile tube cavity respectively, and the bottom end of the mobile bar extends to the outer of moving tube bottom end Portion is simultaneously fixedly connected with photographic device, and the positive bottom of moving tube offers notch, and suit is fixed in the bottom of the notch There is locating shaft, the middle part movable sleeve of the locating shaft, which is connected to, turns tooth, and the outer for turning tooth is engaged with rack, the top of the notch Portion is fixedly connected with positioner, and thread bush is equipped with two location nuts positioned at moving tube both sides on the threaded rod, another It is fixedly connected with limit shaft between the group locating piece, the flank threads of the upper chuck are socketed with pressing device.
Preferably, the telescopic device includes telescoping tube, and the internal activity of the telescoping tube is socketed with by movable plate, the quilt Telescopic rod is fixedly connected in the middle part of movable plate top, the top of the telescopic rod is fixedly connected with the bottom of upper chuck, described Spring is fixedly connected at the top of movable plate, the spring movable set is on telescopic rod, and in the top and telescoping tube of spring It is fixedly connected at the top of chamber.
Preferably, the photographic device includes fixing pipe, and the internal activity of the fixing pipe is set with movable head, it is described with The middle part fixing sleeve of movable plate is connected to camera, and the both ends of the camera all extend to the outside of fixing pipe, the movable head Side is fixedly connected with tension spring, and the tension spring movable set is on camera, and the side wall of one end of tension spring and fixed tube cavity It is fixedly connected.
Preferably, the positioner includes position-limiting tube, and the bottom of the limit tube cavity is fixedly connected with compression spring, described The bottom end of compression spring is fixedly connected with lifter plate, and the side of the lifter plate is fixedly connected with driving lever, and the bottom of the lifter plate is solid Surely it is connected with kelly, the bottom end of the kelly extends to the outside of position-limiting tube bottom end and is flexibly connected with tooth is turned.
Preferably, the pressing device includes screw rod, and the flank threads of the screw rod and upper chuck are socketed, the screw rod One end be fixedly connected with the bull stick outside upper chuck, the other end of the screw rod is movably installed with positioned at upper chuck Internal connecting tube, side of the connecting tube far from upper chuck are fixedly connected with pressing plate, and the other end of the screw rod is fixed The baffle being set with inside connecting tube, the baffle and connecting tube pivot bush unit.
Preferably, the thickness of the upper chuck is identical as the next thickness of chuck, and upper chuck and the next chuck Axle center is located in same vertical line, and the inside of upper chuck is equipped with cushion pad.
(Three)Advantageous effect
Compared with prior art, the utility model provides a kind of with external VR cameras, has following advantageous effect:
1, there should be external VR cameras, be acted on by the elastic force of spring so that upper chuck and the next chuck set are stopped The quadrangle of machine is simultaneously stepped up, and utilizes the threaded function of screw rod and upper chuck side so that pressing plate coordinates the side wall and pressure of upper chuck Tight mobile phone avoids common external VR cameras and passes through on clip loading mobile phone to fixed VR cameras so that VR is imaged The fixed effect of head is bad, is easy to fall off, VR camera lenses is caused to fall damage.
2, there should be external VR cameras, by the threaded function of two location nuts and threaded rod, fixed moving tube Position drives mobile bar to move down, to control the position of camera so that the constant bearing of camera is wide, avoids using tooth is turned The position of part mobile phone and camera mismatches, and causes camera that can not use, makes troubles to user.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is that the A of the utility model structure chart 1 goes out close-up schematic view;
Fig. 3 is the schematic side view of the upper chuck of the utility model structure;
Fig. 4 is the sectional view of the utility model structure moving tube;
Fig. 5 is the side sectional view of the utility model structure chart 4;
Fig. 6 is the utility model structure telescopic device schematic diagram;
Fig. 7 is the utility model structure photographic device schematic diagram;
Fig. 8 is the utility model structure positioner schematic diagram;
Fig. 9 is the utility model structure pressing device schematic diagram.
In figure:1 the next chuck, 2 telescopic devices, 21 telescoping tubes, 22 by movable plate, 23 telescopic rods, 24 springs, 3 upper chucks, 4 locating pieces, 5 threaded rods, 6 moving tubes, 7 mobile bars, 8 racks, 9 limited blocks, 10 slide-bars, 11 photographic devices, 111 fixing pipes, 112 Movable head, 113 cameras, 114 tension springs, 12 notches, 13 locating shafts, 14 turns of teeth, 15 positioners, 151 position-limiting tubes, 152 compression springs, 153 lifter plates, 154 driving levers, 155 kellies, 16 location nuts, 17 limit shafts, 18 pressing devices, 181 screw rods, 182 bull sticks, 183 Connecting tube, 184 pressing plates, 185 baffles.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 9 are please referred to Fig.1, one kind has external VR cameras, including the next chuck 1, the both sides inside the next chuck 1 equal It is installed with telescopic device 2, telescopic device 2 includes telescoping tube 21, and the internal activity of telescoping tube 21 is socketed with by movable plate 22, quilt Telescopic rod 23 is fixedly connected in the middle part of 22 top of movable plate, the top of telescopic rod 23 is fixedly connected with the bottom of upper chuck 3, quilt The top of movable plate 22 is fixedly connected with spring 24,24 movable set of spring on telescopic rod 23, and the top of spring 24 with it is flexible Pipe is fixedly connected at the top of 21 inner cavity, is moved in telescoping tube 21 using telescopic rod 23, convenient for being acted on by the elastic force of spring 24, So that upper chuck 3 and the next chuck 1 clamp the mobile phone of different length, the top of telescopic device 2 is fixedly connected with upper chuck 3, the thickness of upper chuck 3 is identical as the thickness of the next chuck 1, and the axle center of upper chuck 3 and the next chuck 1 is located at same hang down On straight line, and the inside of upper chuck 3 is equipped with cushion pad, using the cushioning effect of 3 internal damping pad of upper chuck, avoids hand Machine is scratched when fixing, and the front of upper chuck 3 is fixedly connected with locating piece 4, and the quantity of locating piece 4 is four, and four fixed Position block 4 with two for one group be symmetrically distributed in upper chuck 3 it is positive above and below, be fixedly connected between one group of locating piece 4 There is same threaded rod 5, moving tube 6 is movably installed on threaded rod 5, the bottom movable sleeve of moving tube 6 is connected to mobile bar 7, mobile 7 positive middle part of bar offers rack 8, and the both sides on 7 top of mobile bar are fixedly connected with the limited block inside moving tube 6 9, the middle part movable sleeve of limited block 9 is connected to slide-bar 10, and the top and bottom of the both ends of slide-bar 10 respectively with 6 inner cavity of moving tube are fixed Connection, the bottom end of mobile bar 7 extend to the outside of 6 bottom end of moving tube and are fixedly connected with photographic device 11, and photographic device 11 wraps Fixing pipe 111 is included, the internal activity of fixing pipe 111 is set with movable head 112, and the middle part fixing sleeve of movable head 112 is connected to camera shooting First 113, the both ends of camera 113 all extend to the outside of fixing pipe 111, and the side of movable head 112 is fixedly connected with tension spring 114,114 movable set of tension spring is on camera 113, and the side wall of one end of tension spring 114 and 111 inner cavity of fixing pipe is fixed and connected It connects, utilizes the pulling force effect of tension spring 114 so that camera 113 is always at the shape contacted with 3 inside mobile lens of upper chuck State, so that it is guaranteed that the effect that camera 113 images, 6 positive bottom of moving tube offer notch 12, the bottom of notch 12 is fixed It is set with locating shaft 13, the middle part movable sleeve of locating shaft 13, which is connected to, turns tooth 14, and the outer for turning tooth 14 is engaged with rack 8, notch 12 Top be fixedly connected with positioner 15, positioner 15 includes position-limiting tube 151, and the bottom of 151 inner cavity of position-limiting tube, which is fixed, to be connected It is connected to compression spring 152, the bottom end of compression spring 152 is fixedly connected with lifter plate 153, and the side of lifter plate 153 is fixedly connected with driving lever 154, the bottom of lifter plate 153 is fixedly connected with kelly 155, and the bottom end of kelly 155 extends to the outside of 151 bottom end of position-limiting tube simultaneously It being flexibly connected with tooth 14 is turned, is acted on using the elastic force of compression spring 152 so that kelly 155 is always at the state blocked and turn tooth 14, from And ensuring the stability of camera, thread bush is equipped with two location nuts 16 positioned at 6 both sides of moving tube on threaded rod 5, separately Limit shaft 17 is fixedly connected between one group of locating piece 4, the flank threads of upper chuck 3 are socketed with pressing device 18, compress dress It includes screw rod 181 to set 18, and screw rod 181 and the flank threads of upper chuck 3 are socketed, and one end of screw rod 181, which is fixedly connected with, to be located at The other end of bull stick 182 outside upper chuck 3, screw rod 181 is movably installed with the connecting tube 183 inside upper chuck 3, Side of the connecting tube 183 far from upper chuck 3 is fixedly connected with pressing plate 184, and the other end fixing sleeve of screw rod 181, which is equipped with to be located at, to be connected Baffle 185 inside take over 183, baffle 185 and 183 pivot bush unit of connecting tube, utilize the screw thread of screw rod 181 and upper chuck 3 Effect so that pressing plate 184 is matched for clamping tightly camera 113 with 3 another side wall of upper chuck, and then reaches fixed effect.
When work, first, mobile phone is placed on to the inside of the next chuck 1, is acted on using the elastic force of spring 24 so that upper Chuck 3 clamps mobile phone with the next chuck 1 in upper and lower orientation, then rotates bull stick 182 and screw rod 181 is driven to rotate so that pressing plate 184 It moves and coordinates the side wall of upper chuck 3 that mobile phone is fixed, finally rotate two location nuts 16, control camera 113 Horizontal position, be rotated further by and turn tooth 14, drive mobile bar 7 move down, control camera 113 vertical direction position, to image First 113 match with the lens location on mobile phone.
In conclusion there should be external VR cameras, acted on by the elastic force of spring 24 so that upper chuck 3 and bottom Chuck 1 entangles the quadrangle of mobile phone and steps up, and utilizes the threaded function of screw rod 181 and 3 side of upper chuck so that pressing plate 184 is matched The side wall for closing a chuck 3 compresses mobile phone, to fixed VR cameras, avoids common external VR cameras and is added by clip It carries on mobile phone so that the fixed effect of VR cameras is bad, is easy to fall off, and VR camera lenses is caused to fall damage;It is positioned by two The threaded function of nut 16 and threaded rod 5, the position of fixed moving tube 6 drive mobile bar 7 to move down, to control using tooth 14 is turned The position of camera 113 processed so that the constant bearing of 113 cameras is wide, avoids the position of part mobile phone and camera 113 not Matching, causes camera 113 that can not use, makes troubles to user;It solves common external VR cameras by clip to add It carries on mobile phone so that the fixed effect of VR cameras is bad, is easy to fall off, and VR camera lenses is caused to fall damage, and common external VR cameras cannot meet all handset demands so that in fact due to clip size issue, the fixed limited orientation of VR cameras With the not high problem of property.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (6)

1. one kind having external VR cameras, including the next chuck(1), it is characterised in that:The bottom chuck(1)Internal two Side is installed with telescopic device(2), the telescopic device(2)Top be fixedly connected with upper chuck(3), described upper Chuck(3)Front be fixedly connected with locating piece(4), the locating piece(4)Quantity be four, and four locating pieces(4)With Two are symmetrically distributed in upper chuck for one group(3)Above and below positive, locating piece described in one group(4)Between be fixedly connected There is same threaded rod(5), the threaded rod(5)On be movably installed with moving tube(6), the moving tube(6)Bottom movable sleeve It is connected to mobile bar(7), the mobile bar(7)Positive middle part offers rack(8), the mobile bar(7)The both sides on top are equal It is fixedly connected with and is located at moving tube(6)Internal limited block(9), the limited block(9)Middle part movable sleeve be connected to slide-bar(10), The slide-bar(10)Both ends respectively with moving tube(6)It is fixedly connected at the top and bottom of inner cavity, the mobile bar(7)Bottom end Extend to moving tube(6)The outside of bottom end is simultaneously fixedly connected with photographic device(11), the moving tube(6)Positive bottom opens up There is notch(12), the notch(12)Bottom fixing sleeve be equipped with locating shaft(13), the locating shaft(13)Middle part movable sleeve It is connected to and turns tooth(14), described to turn tooth(14)Outer and rack(8)Engagement, the notch(12)Top be fixedly connected with screens Device(15), the threaded rod(5)Upper thread bush, which is equipped with, is located at moving tube(6)Two location nuts of both sides(16), another group The locating piece(4)Between be fixedly connected with limit shaft(17), the upper chuck(3)Flank threads be socketed with pressing device (18).
2. according to claim 1 a kind of with external VR cameras, it is characterised in that:The telescopic device(2)Including Telescoping tube(21), the telescoping tube(21)Internal activity be socketed with by movable plate(22), described by movable plate(22)The middle part on top It is fixedly connected with telescopic rod(23), the telescopic rod(23)Top and upper chuck(3)Bottom be fixedly connected, it is described passive Plate(22)Top be fixedly connected with spring(24), the spring(24)Movable set is in telescopic rod(23)On, and spring(24) Top and telescoping tube(21)It is fixedly connected at the top of inner cavity.
3. according to claim 1 a kind of with external VR cameras, it is characterised in that:The photographic device(11)Including Fixing pipe(111), the fixing pipe(111)Internal activity be set with movable head(112), the movable head(112)Middle part Fixing sleeve is connected to camera(113), the camera(113)Both ends all extend to fixing pipe(111)Outside, it is described servo-actuated Plate(112)Side be fixedly connected with tension spring(114), the tension spring(114)Movable set is in camera(113)On, and tension spring (114)One end and fixing pipe(111)The side wall of inner cavity is fixedly connected.
4. according to claim 1 a kind of with external VR cameras, it is characterised in that:The positioner(15)Including Position-limiting tube(151), the position-limiting tube(151)The bottom of inner cavity is fixedly connected with compression spring(152), the compression spring(152)Bottom end It is fixedly connected with lifter plate(153), the lifter plate(153)Side be fixedly connected with driving lever(154), the lifter plate (153)Bottom be fixedly connected with kelly(155), the kelly(155)Bottom end extend to position-limiting tube(151)The outside of bottom end And with turn tooth(14)Flexible connection.
5. according to claim 1 a kind of with external VR cameras, it is characterised in that:The pressing device(18)Including Screw rod(181), the screw rod(181)With upper chuck(3)Flank threads socket, the screw rod(181)One end fix connect It is connected to and is located at upper chuck(3)External bull stick(182), the screw rod(181)The other end be movably installed with positioned at upper folder Set(3)Internal connecting tube(183), the connecting tube(183)Far from upper chuck(3)Side be fixedly connected with pressing plate (184), the screw rod(181)Other end fixing sleeve be equipped be located at connecting tube(183)Internal baffle(185), the baffle (185)With connecting tube(183)Pivot bush unit.
6. according to claim 1 a kind of with external VR cameras, it is characterised in that:The upper chuck(3)Thickness Degree and the next chuck(1)Thickness it is identical, and upper chuck(3)With the next chuck(1)Axle center be located in same vertical line, and Upper chuck(3)Inside cushion pad is installed.
CN201820192161.9U 2018-02-05 2018-02-05 One kind having external VR cameras Active CN207820057U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820192161.9U CN207820057U (en) 2018-02-05 2018-02-05 One kind having external VR cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820192161.9U CN207820057U (en) 2018-02-05 2018-02-05 One kind having external VR cameras

Publications (1)

Publication Number Publication Date
CN207820057U true CN207820057U (en) 2018-09-04

Family

ID=63321753

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820192161.9U Active CN207820057U (en) 2018-02-05 2018-02-05 One kind having external VR cameras

Country Status (1)

Country Link
CN (1) CN207820057U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109246338A (en) * 2018-09-07 2019-01-18 安顺云首创科技开发有限公司 A kind of external mobile phone camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109246338A (en) * 2018-09-07 2019-01-18 安顺云首创科技开发有限公司 A kind of external mobile phone camera

Similar Documents

Publication Publication Date Title
CN203797307U (en) Shooting device clamping device of handheld remote-control shooting device
CN206018229U (en) Hand-held head
CN207820057U (en) One kind having external VR cameras
CN109237265A (en) A kind of video camera adjustable support for shooting
CN112240471A (en) Forward and reverse folding photographic tripod
CN109561187A (en) A kind of portable multi-function combination three-axis stabilization filming apparatus
CN209031671U (en) A kind of medium-sized holder of 3D intelligent rotating
CN206072692U (en) A kind of dissemination of news camera mount
CN206451462U (en) A kind of comprehensive digital video frequency display table of camera lens principal arm doublejointed formula
CN208474835U (en) A kind of video-photographic balance bracket
CN207529000U (en) A kind of auxiliary lens device of mobile equipment
CN208227143U (en) A kind of mobile phone camera with dust reduction capability
CN106231188A (en) Multi-angle space imaging device
CN207939607U (en) A kind of household fixed point adjusting camera
CN208474857U (en) A kind of filming apparatus for e-commerce
CN208079197U (en) A kind of mobile telephone external camera len
CN108679429A (en) A kind of hand-held frame of the holder that stability is strong
CN214700218U (en) 360 fixing device of degree panorama shooting equipment
CN108758207A (en) A kind of digital camera that can stablize placement
CN208076808U (en) A kind of external lens assembly
CN209233889U (en) A kind of portable multi-function combination three-axis stabilization filming apparatus
CN209540455U (en) A kind of multi-functional self-shooting bar
CN209100960U (en) A kind of panorama camera fixed pedestal for the helmet
CN106131429A (en) Multi-angle spatial imaging system
CN212321950U (en) Auxiliary adjusting device for optical lens

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 330000 Jiangxi Nanchang Nanchang hi tech Industrial Development Zone, east of seven road, west of planning three road.

Patentee after: Nanchang helitai Technology Co., Ltd

Address before: 330000 Jiangxi Nanchang Nanchang hi tech Industrial Development Zone, east of seven road, west of planning three road.

Patentee before: NANCHANG BYD ELECTRONIC PARTS Co.,Ltd.

CP01 Change in the name or title of a patent holder