CN208591195U - A kind of eyeshade, helmet and the cylinder for making eyeshade - Google Patents

Abstract

The utility model is suitable for helmet technical field, provide a kind of eyeshade, including columnar eyeshade main body, one end of eyeshade main body is worn on the face of user, the other end connects head-wearing device, axial elastic deformation can occur when by axial compressive force for any position of the either end of eyeshade main body, and amount of elastic deformation and the pressure size at compression position are adapted, and make eyeshade main body and the complete close proximity of face.When user wears eyeshade, the different location of its face is different to the pressure of eyeshade end, the corresponding site of eyeshade main body adapts to the contraction that respective degrees occur for different pressures automatically, make any position of eyeshade can be with the complete close proximity of face, light-proofness is good, and for uniform force without constriction, comfortable wearing can adaptive different crowd everywhere.In addition, eyeshade end shape is not required to special designing, it is not required to carry out investigation early period, high production efficiency, applicability is good, and no market expansion limitation has good economic benefit.

Description

A kind of eyeshade, helmet and the cylinder for making eyeshade

Technical field

The utility model belongs to helmet technical field, in particular to a kind of eyeshade, helmet and for making eye The cylinder of cover.

Background technique

In terms of existing eyeshade product is primarily upon sleep, protection and physical therapy, main purpose is the strong light of masking, protects eye Eyeball is not by strong illumination.The eyeshade of intelligence wearing product mostly uses the soft materials such as sponge, TPU to make mostly, and its shape The face shape of people is copied to be designed.Contoured design needs to do a large amount of user's investigation, studies the face of different people and does One comprehensively considers, and selects large sample size crowd as design object.Investigation early period cost had not only been expended in this way, but also had inevitably been had one small Groups of people can not adapt to eyeshade.Also, different ethnic group facial characteristics are different, such as the white bridge of the nose is generally than yellow Height, then the eyeshade of country production may and be not suitable with other countries or area, but also the sale city of product Field is limited.Due to the otherness of this individual, existing eyeshade adaptability is still to be improved.

Utility model content

The utility model embodiment is designed to provide a kind of eyeshade, it is intended to solve traditional eyeshade to different facial characteristics The bad technical problem of the adaptability of crowd.

The utility model embodiment is achieved in that a kind of eyeshade, including columnar eyeshade main body, the eyeshade main body One end be used to be worn on the face of user, the other end is appointed for connecting head-wearing device, the either end of the eyeshade main body Axial elastic deformation, and the pressure size phase of amount of elastic deformation and compression position can occur when by axial compressive force for one position It adapts to, makes the eyeshade main body and the complete close proximity of face.

Further, the eyeshade main body is in turn connected to form in such a way that side connects by multiple cylinders, the column Body is shunk under axial and the automatic rebounding after pressure revocation, and each cylinder can independent telescope.

Further, each cylinder end corresponding with face is equipped with flexible piece, and the eyeshade further includes being coated on The soft external member of the eyeshade body exterior, the eyeshade main body are cylindrical or elliptical cylinder-shape, both ends in its natural state Smooth, the plane where either end is vertical with the side of cylinder.

The another object of the utility model is to provide a kind of helmet, connect including above-mentioned eyeshade, with the eyeshade The head-wearing device connect and the adjustable head band being connect with the head-wearing device.

Eyeshade provided by the embodiment of the utility model has the following beneficial effects:

Firstly, being promoted on wear comfort, any position of the either end of eyeshade main body is by axial compressive force When can occur axial elastic deformation, and amount of elastic deformation and the pressure size at compression position are adapted, in this way, user wears eye When cover, the different location of face is different to the pressure of eyeshade end, and the corresponding site of eyeshade main body adapts to different pressures automatically The contraction that respective degrees occur makes any position of eyeshade can be with the complete close proximity of face, and light-proofness is good, and everywhere by For power uniformly without constriction, comfortable wearing can adaptive different crowd.

In addition, having apparent advantage in manufacture efficiency and cost, the structure of eyeshade in its natural state can be designed For simple cylindricality, end shape is not required to special designing, is not required to carry out a large amount of investigations early period naturally, high production efficiency, and not Different shapes need to be researched and developed in order to adapt to different ethnic groups, applicability is good, and no market expansion limitation has economic effect well Benefit.

The another object of the utility model is to provide a kind of cylinder, for making the eyeshade main body in eyeshade, including phase The first connector and the second connector being mutually socketed, first connector are equipped with locating piece, set on second connector Have the slideway with locating piece cooperation, make second connector and first connector can relative telescopic, described second Elastic component is equipped between connector and the first connector, in the end capacity compression of first connector or the second connector Elastic deformation occurs to keep the close proximity by pressure side and pressure body of first connector or the second connector.

Further, first connector includes leading portion and back segment, and the leading portion is connect with second connector, institute It states locating piece and is set to the leading portion, be equipped with flexible piece in the free end of the back segment or the free end of the second connector；It is described First connector and the second connector are hollow pipe fitting, and the back segment is axially connected to leading portion, and the cross section of the leading portion The transition position of the long-pending cross-sectional area for being less than back segment, the leading portion and back segment is formed with step.

Further, the slideway is with second connector shaft to parallel slot, and the locating piece includes setting Convex block on first connector, the convex block are located at the surface in the slot and being higher than second connector.

Further, the locating piece further includes V-arrangement elastic yarn, and the convex block is connected to the both ends of the V-arrangement elastic yarn, First connector is opened up there are two symmetrical through-hole, and V-arrangement elastic yarn two sides are forced to be placed in first connector In cavity, stretch out the convex block from the through-hole；The elastic component is set to bottom in second connector and described Between V-arrangement elastic yarn in first connector.

Further, first connector includes sequentially connected first side, second side, third side and the 4th Side, the first side and second side are opposite, and the first side is equipped with the first axially extending convex ridge, and described first is convex Ridge includes the back segment convex ridge of the leading portion convex ridge and the back segment positioned at the leading portion；The second side is equipped with axially extending the One groove, first groove include the back segment groove positioned at the leading portion groove of the leading portion and positioned at the back segment；

Second connector includes sequentially connected 5th side, the 6th side, heptalateral face and the 8th side, described 5th side and the 6th side are opposite, and the 5th side is equipped with the second convex ridge, and the 6th side is equipped with the second groove；It is described Second convex ridge is sheathed on the leading portion convex ridge, and second groove is sheathed on the leading portion groove；

The flush with outer surface of the outer surface of second convex ridge and the back segment convex ridge, the outer surface of second groove and The flush with outer surface of the back segment groove；

Two cylinders can matching by the cooperation of the second convex ridge and the second groove and back segment convex ridge and back segment groove Conjunction is connected.

Further, the third side is opposite with the 4th side and is parallel cambered surface, the width of the third side Less than the width of the 4th side, heptalateral face is opposite with the 8th side and is parallel cambered surface, the width in heptalateral face The width less than the 8th side is spent, when the cylinder is used for the eyeshade, the third side and heptalateral are facing towards in eyeshade Side, the 4th side and the 8th side are towards on the outside of eyeshade.

The first connector and the second connector of cylinder provided by the embodiment of the utility model can relative telescopics, i.e. generation bullet Property deformation, when multiple cylinders are connected to form eyeshade main body, each cylinder can independent deformation.When wearing eyeshade, eyeshade is far from face The one end in portion is fixed, and the one end for contacting face can be pressurized relative constriction occurs, due to each cylinder can with independent telescope, And since the restoring force of elastic component acts on, make each cylinder can be kept with face close connection and will not pressure it is excessive, make Face structure can be adapted to automatically by obtaining eyeshade, and wearing sense of touch is not comfortably stiff, not only can watch with shading but also cosily video Or experience eye-care, usage experience is preferable.

Detailed description of the invention

Fig. 1 is the schematic perspective view of eye-shade provided by the embodiment of the utility model；

Fig. 2 is the use state diagram of eye-shade provided by the embodiment of the utility model；

Fig. 3 is the schematic perspective view of helmet provided by the embodiment of the utility model；

Fig. 4 is the schematic perspective view of cylinder provided by the embodiment of the utility model；

Fig. 5 is the decomposition texture schematic diagram of cylinder provided by the embodiment of the utility model；

Fig. 6 is the schematic diagram provided by the embodiment of the utility model using cylinder production eyeshade；

Meaning marked in the figure are as follows:

1- eyeshade；2- eyeshade main body；3- electronic device；4- adjustable head band；5- cylinder；

21- first segment；22- second segment；23- contact jaw；

The first connector of 51-；The second connector of 52-；53- flexible piece；54- locating piece；55- slideway；55a- slot；56- Elastic component；

511- leading portion；512- back segment；513- step；514- through-hole；515- first side；516- second side；517- Three sides；The 4th side 518-；The first convex ridge of 519-；The first groove of 5110-；

541- convex block；542-V shape elastic yarn；

The 5th side 521-；The 6th side 522-；523- heptalateral face；The 8th side 524-；The second convex ridge of 525-；526- Second groove；

5191- back segment convex ridge；5192- leading portion convex ridge；5111- back segment groove；5112- leading portion groove.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or It connects on another component.When a component referred to as " is connected to " another component, it, which can be, directly or indirectly connects It is connected on another component.The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" is based on attached drawing institute The orientation or positional relationship shown is merely for convenience of describing, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.Term " first ", " the Two " are used merely to facilitate description purpose, are not understood to indicate or imply relative importance or implicitly indicate technical characteristic Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.

In order to illustrate technical solution described in the utility model, carried out specifically below in conjunction with specific accompanying drawings and embodiments It is bright.

Fig. 1 and Fig. 2 are please referred to, the utility model embodiment provides a kind of eyeshade 1 comprising columnar eyeshade main body 2, it should One end of eyeshade main body 2 is used to be worn on the face of user, and for connecting head-wearing device, which appoints the other end Axial elastic deformation, and the pressure of amount of elastic deformation and compression position can occur when by axial compressive force for any position of one end Power size is adapted, and makes eyeshade main body 2 and the complete close proximity of face.That is, eyeshade main body 2 is an open column shape structure, wear When eyeshade 1, eyeshade 1 is covered in around eyes, and any position of eyeshade 1 all can axially independent telescope deform, this makes It obtains in any position pressure of its end, flexible deformation can occur for a part of the corresponding eyeshade main body 2 in the position, other positions Set when being under pressure, flexible deformation also occurs for other corresponding positions, and different parts can independently occur flexible deformation without Meeting transition involves, and makes any position of entire eyeshade main body 2 that can adapt to the pressure that the position is subject to, in turn, which can With the facial characteristics of adaptive user.

The eyeshade 1 may further include the soft external member being coated on outside eyeshade main body 2, it is to be understood that work as eye When cover main body 2 itself and the position of facial contact are soft skin compatible materials, soft external member can also be not provided with.

Eyeshade 1 provided by the embodiment of the utility model has the effect that firstly, promoted on wear comfort, Axial elastic deformation, and amount of elastic deformation can occur when by axial compressive force for any position of the either end of eyeshade main body 2 It is adapted with the pressure size at compression position, in this way, the different location of face is to eyeshade end when user wears eyeshade 1 Pressure is different, and eyeshade 1 adapts to the contraction that respective degrees occur for different pressures automatically, makes its any position can be close with face Connect, light-proofness is good, and for uniform force without constriction, comfortable wearing can adaptive different crowd everywhere.

In addition, having apparent advantage in manufacture efficiency and cost, the structure of eyeshade 1 in its natural state can be designed For simple cylindricality, end shape is not required to special designing, is not required to carry out a large amount of investigations early period naturally, high production efficiency, and not Different shapes need to be researched and developed in order to adapt to different ethnic groups, applicability is good, not will lead to market expansion limitation, has warp well Ji benefit.

Further, the shape of the eyeshade main body 2 preferably uses cylinder or elliptical cylinder-shape, because it being capable of adaptive user Facial characteristics, and then be not required to be designed as special curved shape, in its natural state, end is cylindrical or elliptical cylinder-shape, Both ends are smooth, and the plane where either end is vertical with the side of cylinder.Not only it is convenient for manufacture in this way, but also beautiful and generous.

With reference to Fig. 3, eyeshade 1 provided by the embodiment of the utility model is suitable for various helmets, and helmet includes upper The eyeshade 1 stated, the electronic device 3 being connect with eyeshade 1 and the adjustable head band 4 being connect with electronic device 3.One end of the eyeshade 1 Electronic device 3 is connected, the other end is contacted with user.The electronic device 3 can be intelligent multimedia device (such as VR device) Or eye-care device (such as eye masseur).

The helmet can adapt to the people of various face structure features due to using above-mentioned eyeshade 1 automatically Group, it is applied widely, using limitation caused by solving the problems, such as because of individual difference.

With further reference to Fig. 1, which can be is sequentially connected in such a way that side connects by multiple cylinders 5 It is formed, cylinder 5 is shunk under axial and the automatic rebounding after pressure revocation, and each cylinder 5 can independent telescope.Cylinder 5 End corresponding with face can be equipped with flexible piece 53, for providing relatively comfortable sense of touch.The flexible piece 53 can be sponge etc. Soft light material.

With reference to Fig. 4 and Fig. 5, which is had the following structure: cylinder 5 includes the first connector 51 for being mutually socketed and the Two connectors 52, the first connector 51 are equipped with locating piece 54, and the second connector 52 is equipped with the slideway cooperated with locating piece 54 55, locating piece 54 is located in slideway 55, and the two opposite can be slided, and makes the second connector 52 and the first connector 51 can be along slideway 55 direction relative telescopics are equipped with elastic component 56 between the second connector 52 and the first connector 51, in the first connector 51 Or second connector 52 end capacity compression when elastic deformation occurs to keep the compression of the first connector 51 or the second connector 52 The close proximity at end and pressure body, i.e. the presence due to elastic component 56, when the first connector 51 or the second connector 52 by When external force is pushed and is retracted to other side, elastic component 56 generates reversely the first connector 51 or the second connector 52 by compression Elastic force, this reversed elastic force and exert pressure it is contrary so that the first connector 51 pressed or the second connector Closely contact is kept between 52 end and pressure body, and the dynamics of elastic force is moderate, will not cause as rigid object bright Aobvious constriction.

With reference to Fig. 6, according to limiting principle, a most small line segments are sequentially connected the curve that can be considered smooth, originally by most The cylinder 51 of embodiment forms a line side by side, and end, which is sequentially connected, can be considered a smooth lines, by most cylinders 51 The face that multiple lines and multiple rows can be considered smooth is lined up side by side.Using in the present embodiment, the first connector 51 of each cylinder 51 and Two connectors 52 all can relative telescopic so that any point can float up and down with external force on lines or face.Such as Fig. 1 and Fig. 2, using more A cylinder 51 is in turn connected to form closed annular structure, as eyeshade main body 2, the first connector 51 and second of each cylinder 51 Connector 52 can be with relative telescopic, when wearing eyeshade 1, and eyeshade 1 is usually fixed motionless, and contact surface far from one end of face The one end in portion, which can be pressurized, occurs relative constriction, since each cylinder 51 can be with independent telescope, and due to the restoring force of elastic component 56 Effect makes each cylinder 51 that can keep being in close contact with face, so that eyeshade 1 can be very good to adapt to the face knot of user The smoothed curve with facial match is presented in structure, the overall structure of 1 end of eyeshade, and then keeps wearing sense of touch comfortably not stiff, and Be not in gap, can be very good shading and viewing video or experience eye-care, usage experience is preferable.

It is connected in such a way that side is docked between cylinder 51 and cylinder 51, forms the eyeshade main body 2 of closed hoop.It is multiple First connector 51 of cylinder 51 is connected to form the first segment 21 of eyeshade main body 2, and the second connector 52 of multiple cylinders 51 is connected Second segment 22 is formed, one end equipped with flexible piece 53 forms contact jaw 23, is used for and user's facial contact.In a kind of embodiment In, the insertion of second segment 22 of eyeshade 1 is connected to electronic device 3, and first segment 21 is exposed, and the end of first segment 21 is contact jaw 23, It is contacted with user's circumference of eyes.It is of course also possible to set flexible piece 53 on the second connector 52, second segment 22 is used for and uses The facial contact of person.

Further, the first connector 51 of the cylinder 51 and the second connector 52 are hollow pipe fitting, the first connection Part 51 includes the leading portion 511 and back segment 512 being axially connected to, and the cross-sectional area of leading portion 511 is less than the cross-sectional area of back segment 512, The transition position of leading portion 511 and back segment 512 forms step 513, which is preferably the step 513 of vertical axial.Leading portion 511 Connect with the second connector 52, locating piece 54 is set to leading portion 511, back segment 512 free end or the second connector 52 from Squeezable flexible piece 53 is equipped with by end, which is used for and user's facial contact.

The slot that the slideway 55 on the second connector 52 in the present embodiment is preferably and 52 axial direction of the second connector is parallel 55a, slot 55a are the slot 55a of the bar shaped of equivalent width and both ends are in arc-shaped, and locating piece 54 includes being set to the first company Convex block 541 on fitting 51, the width or diameter of convex block 541 are slightly less than the width of slot 55a, and convex block 541 is located in slot 55a And it is higher than the surface of the second connector 52, two arc ends of slot 55a can be slided and ended in slot 55a, into And limit the relative travel of the second connector 52 and the first connector 51.Certainly, the step 513 of the first connector 51 can also be used In the stroke for limiting the second connector 52.

Further, which further includes V-arrangement elastic yarn 542, and above-mentioned convex block 541 is connected to V-arrangement elastic yarn 542 Both ends, correspondingly, the first connector 51 is opened up there are two symmetrical through-hole 514, and 542 two sides of V-arrangement elastic yarn are forced to be placed in the In the cavity of a connection piece 51, stretch out convex block 541 from through-hole 514.54 structure of locating piece simply easily manufactures, and uses V-arrangement Elastic yarn 542 connects convex block 541, and convex block 541 is enable to be retracted through-hole 514, the bullet in external pressure releases under external pressure , when assembling cylinder 51, push the second connector 52 to the first connector 51, convex block 541 using this feature in through-hole 514 out It is forced to retract through-hole 514, pop-up through-hole 514, completion are assembled again at slot 55a.If breaking down when in use, it is also convenient for tearing open Unload maintenance.

Based on the design of the locating piece 54, convex block 541 is preferably provided with arc guide surface, in order in the end of slot 55a Place can skid off slot 55a, and certainly, the gradient of the guide surface needs to rationally design, in case gradient is excessive and misses in normal use Skid off slot 55a.

In addition, elastic component 56 can be set in the bottom in the second connector 52 and between the V-arrangement elastic yarn 542.

In the present embodiment, for the ease of multiple cylinders 51 are connected from side and different cylinders 51 can be made to send out Raw different axial movement, designs the shape of the first connector 51 and the second connector 52, specifically: the first connection Part 51 includes sequentially connected first side 515, second side 516, third side 517 and the 4th side 518, monnolithic case class Like cuboid, first side 515 and second side 516 are opposite, and third side 517 and the 4th side 518 are opposite, first side 515 are equipped with the first axially extending convex ridge 519, and the first convex ridge 519 includes at least the back segment convex ridge 5191 positioned at back segment 512, In other embodiments, the leading portion convex ridge 5192 positioned at leading portion 511 is still further comprised.Second side 516 is equipped with axially extending First groove 5110, the first groove 5110 include at least the back segment groove 5111 positioned at back segment 512, in other embodiments, also It further comprise the leading portion groove 5112 positioned at leading portion 511.Second connector 52 includes sequentially connected 5th side 521, the Six sides 522, heptalateral face 523 and the 8th side 524, global shape is also similar to cuboid, the 5th side 521 and the 6th side 522 is opposite, and heptalateral face 523 and the 8th side 524 are opposite, and the 5th side 521 is equipped with the second convex ridge 525, and the 6th side 522 is set There is the second groove 526.Matching relationship is as follows: the outer surface of the second convex ridge 525 and the flush with outer surface of back segment convex ridge 5191, and second The outer surface of groove 526 and the flush with outer surface of back segment groove 5111, two cylinders 51 pass through the second convex ridge 525 and the second groove 526 cooperation and back segment convex ridge 5191 are connected with the cooperation of back segment groove 5111.That is, the first connector 51 and After the docking of two connectors 52, the convex ridge of the two side connects convex ridge in alignment, and the groove of the two side also connects into one Straight-line groove, straight line convex ridge and straight-line groove cooperation, so that the docking of cylinder 5 and cylinder 5 is more easier and beauty.

In the above-described embodiments, the side of the first connector 51 and the second connector 52 is respectively equipped with convex ridge and groove, and The leading portion 511 of first connector 51 and the socket of the second connector 52, the socket place of the two can be any reasonable shape, when such as First convex ridge 519 described in above-mentioned other embodiments further includes leading portion convex ridge 5192, and the first groove 5110 further includes leading portion groove When 5112, then the second convex ridge 525 of the second connector 52 is sheathed on leading portion convex ridge 5192, and the second groove 526 is sheathed on leading portion On groove 5112.

It is designed based on the structure of above-mentioned first connector 51 and the second connector 52, locating piece 54 is preferably disposed on third side On the front section of face 517 and the 4th side 518.Slot 55a is set to the heptalateral face 523 and the 8th side of the second connector 52 On face 524.

As a further improvement, the third side 517 with the 4th side 518 of the first connector 51 are parallel cambered surface, And from third side 517 to the direction of the 4th side 518 protrusion in the middle part of cambered surface, the width of third side 517 is less than the 4th side 518 width.The heptalateral face 523 of second connector 52 is parallel cambered surface, the width in heptalateral face 523 with the 8th side 524 Spend the width less than the 8th side 524, direction protrusion of the middle part of cambered surface from heptalateral face 523 to the 8th side 524.It will be multiple When cylinder 51 is spliced into eyeshade main body 2, third side 517 and heptalateral face 523 are towards inside, the 4th side 518 and the 8th side Face 524 is towards outside, and the width of inner side surface is slightly smaller compared with the width of outer lateral side and surface is cambered surface, convenient for forming ring structure And it is beautiful.

Based on the scalability of above-mentioned cylinder 51, the face structure or cable architecture formed by multiple 51 array arrangements of cylinder The structure feature that can also adapt to contact object automatically carries out close be bonded and without constriction with contact object.Utilize the spy Point can be made a variety of Resilient products, such as mattress, quilt, pillow, cushion etc..

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of eyeshade, which is characterized in that including columnar eyeshade main body, one end of the eyeshade main body is for being worn on use The face of person, the other end is for connecting head-wearing device, and any position of the either end of the eyeshade main body is by axial compressive force When can occur axial elastic deformation, and amount of elastic deformation and the pressure size at compression position are adapted, and make the eyeshade main body With the complete close proximity of face.

2. eyeshade as described in claim 1, which is characterized in that the side that the eyeshade main body is connected by multiple cylinders by side Formula is in turn connected to form, and the cylinder is shunk under axial and the automatic rebounding after pressure revocation, and each cylinder It can independent telescope.

3. eyeshade as claimed in claim 2, which is characterized in that each cylinder end corresponding with face is equipped with flexibility Part, the eyeshade further include the soft external member for being coated on the eyeshade body exterior, and the eyeshade main body is in its natural state Cylindrical or elliptical cylinder-shape, both ends are smooth, and the plane where either end is vertical with the side of cylinder.

4. a kind of helmet, which is characterized in that including eyeshade described in claim 1,2 or 3, the head being connect with the eyeshade The adjustable head band wearing device and being connect with the head-wearing device.

5. a kind of cylinder, which is characterized in that for making the eyeshade main body in eyeshade described in claim 1,2 or 3, including phase The first connector and the second connector being mutually socketed, first connector are equipped with locating piece, set on second connector Have the slideway with locating piece cooperation, make second connector and first connector can relative telescopic, described second Elastic component is equipped between connector and the first connector, in the end capacity compression of first connector or the second connector Elastic deformation occurs to keep the close proximity by pressure side and pressure body of first connector or the second connector.

6. cylinder as claimed in claim 5, which is characterized in that first connector includes leading portion and back segment, the leading portion It is connect with second connector, the locating piece is set to the leading portion, free end or the second connector in the back segment Free end be equipped with flexible piece；First connector and the second connector are hollow pipe fitting, and the back segment and leading portion are axial Connection, and the cross-sectional area of the leading portion is less than the cross-sectional area of back segment, the transition position of the leading portion and back segment is formed with step.

7. such as cylinder described in claim 5 or 6, which is characterized in that the slideway is with second connector shaft to parallel Slot, the locating piece includes the convex block being set on first connector, and the convex block is located in the slot and high In the surface of second connector.

8. cylinder as claimed in claim 7, which is characterized in that the locating piece further includes V-arrangement elastic yarn, the convex block connection In the both ends of the V-arrangement elastic yarn, first connector is opened up there are two symmetrical through-hole, V-arrangement elastic yarn two sides by Compel to be placed in the cavity of first connector, stretches out the convex block from the through-hole；The elastic component is set to described Between the V-arrangement elastic yarn in bottom and first connector in two connectors.

9. cylinder as claimed in claim 6, which is characterized in that first connector include sequentially connected first side, Second side, third side and the 4th side, the first side and second side are opposite, and the first side is equipped with axial prolong The first convex ridge stretched, first convex ridge include the back segment convex ridge of the leading portion convex ridge and the back segment positioned at the leading portion；It is described Second side is equipped with the first axially extending groove, and first groove includes positioned at the leading portion groove of the leading portion and positioned at institute State the back segment groove of back segment；

Second connector includes sequentially connected 5th side, the 6th side, heptalateral face and the 8th side, and the described 5th Side and the 6th side are opposite, and the 5th side is equipped with the second convex ridge, and the 6th side is equipped with the second groove；Described second Convex ridge is sheathed on the leading portion convex ridge, and second groove is sheathed on the leading portion groove；

The flush with outer surface of the outer surface of second convex ridge and the back segment convex ridge, the outer surface of second groove and described The flush with outer surface of back segment groove；

Two cylinders can cooperation and back segment convex ridge and back segment groove by the second convex ridge with the second groove cooperation phase Connection.

10. cylinder as claimed in claim 9, which is characterized in that the third side is opposite with the 4th side and is parallel Cambered surface, for the width of the third side less than the width of the 4th side, heptalateral face is opposite with the 8th side and is parallel Cambered surface, the width in heptalateral face less than the 8th side width, when the cylinder is used for the eyeshade, the third side Face and heptalateral are facing towards on the inside of eyeshade, and the 4th side and the 8th side are towards on the outside of eyeshade.