CN208242012U - Closed change torque rotary shaft and electronic equipment - Google Patents

Abstract

It include shell, rotation axis, at least a sliding block and rail structure the utility model discloses a kind of closed change torque rotary shaft and electronic equipment, closed change torque rotary shaft is provided.Wherein, rotation axis can drive sliding block to rotate, sliding block is under the position-limiting action of rail structure, it can rotate while slide axially, with the size for crossing liquid mouth of adjusting slider side setting, to change the area that fluid passes through, realize the linear change of a certain angle rotary torsion, and then achieve the purpose that realize different angle difference torque, using the above-mentioned closed electronic equipment for becoming torque rotary shaft, since the damping fluid that need to be used is sealed in a cavity, therefore, the risks such as oil leak or leakage rouge are not had, and pretightning force need not be provided, simplify structure, thereby reduce production cost.

Description

Closed change torque rotary shaft and electronic equipment

Technical field

The utility model relates to connect the shaft technical field of the display screen part of electronic equipment and body portion, specifically It is related to the closed change torque rotary shaft of one kind and electronic equipment.

Background technique

Shaft is also referred to as pivot device, is a kind of connecting element for being capable of providing relative rotation, is mainly used in electronic equipment Display screen part and body portion between, currently, being widely used in various digital products and electronic equipment, such as notebook Computer, computer, the relative rotation function of being provided by shaft realize the display screen part and body portion of laptop etc. Between folding, rotational positioning and self-closing function.

Referring to Fig. 1, in the prior art, rotary torsion and the torsion variation of shaft are usually by being arranged in the central spindle of shaft Torsion component 100 and elastic parts 200 realize, and by the groups such as butterfly elastic slice 300 or compressed spring 400, gasket and nut 500 At locking member pretightning force is provided, wherein torsion component generates rotary torsion by relative friction between cam and concave wheel, Elastic parts generates axial relative motion by the cooperation between the curved end of cam and the curved end of concave wheel, to realize rotation The variation of torsion, for example the function of easy opening and heavy closing is generated in special angle.But the shaft of above structure, due to need by Relative friction generates rotary torsion, usually to increase lubricant grease on rubbing surface, cause to be easy to appear oil leak in use process The problem of.And this structure must be provided pretightning force by locking member, not so have idle stroke generation.

Summary of the invention

In order to solve the above-mentioned technical problem, the utility model proposes a kind of closed change torque rotary shaft and electronic equipment, While realizing a certain angle rotary torsion linear change, without offer pretightning force, and the risk of oil leak is not had.

The technical solution of the utility model is achieved in that

A kind of closed change torque rotary shaft, the open end including shell open at one end closed at one end, the closing shell It forms airtight cavity and can drive relative to the rotation axis that the shell rotates, by the rotation axis to disturb in the airtight cavity An at least sliding block for the damping fluid of injection and the sliding block can be driven to slide axially to adjust and be set to the mistake of the sliding block side The rail structure of the size of liquid mouth.

Further, sliding groove is formed on the sliding block, the liquid mouth of crossing is set to the side of the sliding block and is connected to institute Sliding groove is stated, the rotation axis includes central spindle, covers in the piston plate outside the central spindle and be formed in the central spindle positioned at described The convex block of piston plate side matched with the sliding groove of the sliding block；The piston plate closes the open end of the shell, shape At the airtight cavity, the convex block and the sliding block are located in the airtight cavity, and the sliding groove covers on the convex block, And can the relatively described convex block slide axially, in sliding process by the convex block adjust it is described cross liquid mouth size, it is described Rail structure includes two sliding rails set on the sliding block both ends, and the center of each sliding rail has the evacuation for avoiding the central spindle Hole, is formed with the spiral curved surface with sliding block cooperation on the opposite face of two sliding rails, and the two of two sliding rails The distance between a spiral curved surface can just accommodate the sliding block.

Further, if there are two the sliding block, the central spindle two equipped with corresponding two sliding blocks described convex Block, two convex blocks are divided on the opposite two sides of the central spindle, and corresponding two institutes are formed in the curved end of the sliding rail State two sections of spiral curved surfaces of sliding block.

Further, a sliding rail is shaped on the inside of the closed end of the shell, another described sliding rail with The inner walls are fixedly connected, and are located at the piston plate side.

Further, in the shell opposite two sides formed there are two strip, the strip and shell one at Type, and between two sections of spiral curved surfaces of the sliding rail, the strip is from the closed end of the shell to another described Sliding rail extends；Another sliding rail is spliced by two sliding rail blocks, and it is bent that one section of spiral is formed on each sliding rail block Face, the position of two sliding rail blocks splicing are formed with the groove with strip clamping.

Further, it is equipped with a sliding block, the central spindle is equipped with a convex block of the corresponding sliding block, institute One section of spiral curved surface that the corresponding sliding block is formed in the curved end of sliding rail is stated, a sliding rail is shaped in institute On the inside of the closed end for stating shell, another described sliding rail is fixedly connected with the inner walls, and is located at the piston plate side.

Further, the curved end of the sliding rail is by the plane and linking of two sections of different heights one section between two planes Spiral curved surface composition, and the side of the sliding rail is formed with the notch for being connected to its center avoid holes；It is formed in the shell There is a strip, the strip and the shell are integrally formed, and the strip is from the closed end of the shell to another cunning Rail extends, and the boss with notch clamping is formed on the extension end face of the strip.

Further, further include an end cover, the end cover include be sheathed on the central spindle and the shell it Between set portion and cover the cover on the open end in the shell, connected between the end cover and the outside of the piston plate There is seal washer, is connected between the end cover and the central spindle equipped with O-ring.

Further, there is the first connection for connecting with external first rotor on the outside of the closed end of the shell End, the central spindle exposes to the housing parts and is formed with second connection end for connecting with external second rotor, described Central spindle is arranged in the intracorporal one end of the closed chamber and forms turning end, is formed with and the rotation on the inside of the closed end of the shell Hold the slot being rotatably assorted.

A kind of electronic equipment, including the first rotor, the second rotor and the closed change torque rotary shaft, described first Rotor is fixedly connected with the shell, and second rotor is fixedly connected with the rotation axis.

The beneficial effects of the utility model are: the utility model proposes a kind of closed change torque rotary shaft, including shell, Rotation axis, at least a sliding block and rail structure.Wherein, rotation axis drives sliding block to rotate during rotation, and sliding block is in sliding rail knot Under the position-limiting action of structure, is rotating while sliding axially, with the size for crossing liquid mouth of adjusting slider side setting, to change The area that fluid passes through also is achieved that the linear change of a certain angle rotary torsion.From the foregoing, it will be observed that the utility model is a kind of Enclosed change torque structure is reached using viscous damping principle by rotation process, changing the area that fluid passes through The purpose for realizing different angle difference torque, using the above-mentioned closed electronic equipment for becoming torque rotary shaft, due to the resistance that need to be used Buddhist nun's liquid (fluid or rouge of certain viscosity) is sealed in a cavity, therefore, does not have the risks such as oil leak or leakage rouge, and nothing Pretightning force must be provided, structure is simplified, thereby reduce production cost.

Detailed description of the invention

Fig. 1 is a kind of pivot structure schematic diagram in the prior art；

Fig. 2 is the closed cross-sectional view for becoming torque rotary shaft of the utility model embodiment 1；

Fig. 3 is the closed exploded view for becoming torque rotary shaft shown in Fig. 2；

Fig. 4 is that shaft, sliding block and sliding rail cooperate schematic diagram in closed change torque rotary shaft shown in Fig. 2；

Fig. 5 is shell and sliding rail integrated formed structure schematic diagram in closed change torque rotary shaft shown in Fig. 2；

Fig. 6 is the closed exploded view for becoming torque rotary shaft of the utility model embodiment 2；

Fig. 7 is that shaft, sliding block and sliding rail cooperate schematic diagram in closed change torque rotary shaft shown in fig. 6；

Fig. 8 is shell and sliding rail integrated formed structure schematic diagram in closed change torque rotary shaft shown in fig. 6.

Specific embodiment

The utility model provides the closed change torque rotary shaft of one kind and electronic equipment.

It is closed to become that torque rotary shaft includes shell open at one end closed at one end, the open end of closing shell forms closed chamber Body simultaneously can the rotation axis of opposite shell rotation, at least one sliding of being rotated axis driving to disturb the damping fluid injected in airtight cavity Block adjusts the rail structure for being set to the size for crossing liquid mouth of sliding block side with sliding block can be driven to slide axially.

Electronic equipment, including the first rotor, the second rotor and above-mentioned closed change torque rotary shaft, wherein the first rotation Body is fixedly connected with the casing, and the second rotor is fixedly connected with the rotating shaft.It is set using the above-mentioned closed electronics for becoming torque rotary shaft It is standby, since the damping fluid (fluid or rouge of certain viscosity) that need to be used is sealed in a cavity, do not have oil leak Or the risks such as leakage rouge, and pretightning force need not be provided, structure is simplified, production cost is thereby reduced.

In order to be more clearly understood that the technology contents of the utility model, spy lifts following embodiment and is described in detail, mesh Be only that the content for being best understood from the utility model rather than limit the protection scope of the utility model.The structure of embodiment attached drawing In each component part do not press normal rates scaling, therefore do not represent the practical relative size of each structure in embodiment.Described in wherein The upper surface of structure or face or upside include intermediate the case where there are also other layer.

Embodiment 1

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model provides a kind of closed change torsion of tool there are two sliding block Axis, including shell 1, rotation axis 2, two sliding blocks 3 and rail structures.

Referring to Fig. 5, shell 1 is closed at one end open at one end, whole cylindrical, open end can be formed after being closed one it is close Closed chamber body, airtight cavity are used to inject the fluid or rouge of certain viscosity, collectively referred to here in as damping fluid, have on the outside of closed end and be used for The first connecting pin 101 connecting with the first rotor of outside, closed end inside have slot 102.

Referring to Fig. 3 and Fig. 4, rotation axis 2 includes central spindle 201, cover the piston plate 202 outside central spindle and to be formed in central spindle upper The convex block 203 matched with the sliding groove of sliding block in piston plate side, corresponding two sliding blocks in the present embodiment, if there are two convex Block, two convex blocks are divided on the opposite two sides of central spindle；Piston plate is used to close the open end of shell, forms airtight cavity, convex Block is used to cooperate with the sliding groove of sliding block, realizes the limit function that slides axially of sliding block, central spindle one end exposes to the part of shell The second connection end 204 connecting with external second rotor is formed, central spindle mid-section body is for penetrating in shell, with band movable slider Damping fluid is disturbed, the central spindle other end is formed with turning end 205, for being rotatably assorted with the slot 102 on the inside of housings close end, from And realize rotational positioning, to guarantee the stability of rotation axis；Specific step between turning end and central spindle, with backstop central spindle to rotation Axis realizes positioning function.

Referring to Fig. 3 and Fig. 4, two sliding blocks 3 are designed to strip, and lateral surface is closely rotatably assorted with inner walls, As arc surface；Sliding groove 302 is formed on its inside, front and rear sides face is for disturbing the intracorporal damping fluid of closed chamber to produce The effect of raw damping crosses liquid mouth 301 and is set to (i.e. leading flank or trailing flank) on the side of sliding block and is connected to sliding groove, sliding block it is another Side can design the aperture 303 of connection sliding groove, can not also set aperture, specifically can according to the setting needs of rotary torsion, into Row selection.Preferably, liquid mouth quantity is crossed in the present embodiment and uses one, and is arranged close to one end of sliding block, but not limited to this, Can be arranged according to actual needs it is two or more, in this way, damping fluid can crossing liquid mouth and be flowed by sliding block side, then through cunning Dynamic slot, flows out from the other side, to obtain different rotary torsions when rotating different directions.Sliding groove is used for and sliding block Convex block cooperation, can slide axially under the limitation of convex block, be located at the side of sliding block due to crossing liquid mouth, sliding block is in axial cunning When dynamic, convex block will change the size of liquid mouth, that is, realize the function for adjusting the size of liquid mouth by convex block in sliding process Energy.

Referring to fig. 2 and Fig. 4, rail structure include two sliding rails 4, and the center of each sliding rail has the central spindle of evacuation rotation axis Avoid holes 401, two sliding rails are oppositely arranged, and two sections of spiral songs with the cooperation of two sliding blocks are formed on opposite face The distance between the spiral curved surface in face 402, two sliding rails can just accommodate sliding block 3.As a kind of preferred embodiment, this implementation Each sliding block is corresponded in example is provided with one section of spiral curved surface, for realizing the linear change of a certain angle rotary torsion, but It is without being limited thereto, if needing multiple angles to realize the variation of rotary torsion in entire relative rotational motion, each sliding block can be corresponded to The spiral curved surface of multistage continuously or discontinuously is set, to realize the linear change of rotary torsion in corresponding rotational angle.

Preferably, a sliding rail is shaped on the inside of the closed end of shell, and referring to Fig. 5, i.e. a sliding rail is set with shell The component of an entirety is counted into, the cooperation that is installed on of sliding rail and shell can be saved, simplify structure.

In order to preferably realize the assembly of another sliding rail and rotation axis, it is preferred that opposite two sides are formed in shell Two strips 103, strip and shell are integrally formed, and between two sections of spiral curved surfaces of each sliding rail, and strip is from shell The closed end of body extends to open end；Another sliding rail is spliced by two sliding rail blocks, and one section of spiral is formed on each sliding rail block Rise curved surface, the position of two sliding rail blocks splicing is formed with the groove 403 with strip clamping, it can be achieved that first installation is slided when assembly Then two sliding rail blocks are installed to two between sliding block and piston plate from two sides again, are matched by the clamping of strip and groove by block It closes, realizes the positioning of sliding rail block and shell, make sliding block just and can be placed in the spiral of two sliding rails to get between curved surface.Assemble Afterwards, two sliding rails are kept fixed with shell connect, and the curved surface on two sliding rails forms one group of curved surface.When rotation axis is packed into wherein When, when rotation axis rotates different angle, this group of curved surface can control the position of sliding block axial direction.

When assembly, referring to fig. 2 and Fig. 4, a sliding rail is first packed into the inside of the closed end of shell, if the sliding rail is by one Body formed in shell, then the step does not have to operation, and sliding block is then led to sliding groove and is covered on its corresponding convex block, then will be another One sliding rail is installed between sliding block and the piston plate of rotation axis, finally, the rotation axis of sliding rail and sliding block will be assembled from shell Open end insertion shell in, make central spindle one end turning end be inserted into housings close end slot in, be rotatably assorted, central spindle Step backstop between turning end is positioned in the opening of slot.In piston plate insertion shell in rotation axis, and with It is fitted close between the inner wall of shell, forms an airtight cavity, and piston plate can be circumferentially rotated with respect to shell, and make to slide Block is assembled to just between the corresponding spiral curved surface of two sliding rails.In this way, rotation axis can drive cunning during rotation Block rotation, sliding block can slide axially simultaneously under the position-limiting action of rail structure, to be arranged by convex block adjusting slider side Cross liquid mouth size be also achieved that the linear change of a certain angle rotary torsion to change the area that fluid passes through.Cause This, the utility model proposes a kind of enclosed change torque structures, using viscous damping principle, by changing in rotation process The area that fluid passes through has achieved the purpose that realize different angle difference torque.

Preferably, referring to figs. 2 and 3, closed change torque rotary shaft further includes an end cover 5, and end cover includes set Set portion 501 between central spindle and shell and cover the cover 502 on the open end of shell, end cover and piston plate it is outer It is connected with seal washer 6 between side, is connected between end cover and central spindle equipped with O-ring 7.In this way, by end cover with Seal washer and O-ring between piston plate, may be implemented the sealing between rotation axis and shell, are further ensured that airtight cavity Sealing performance, avoid oil leak or the leakage risks such as rouge.

The present embodiment, provides a kind of closed change torque rotary shaft of tool there are two sliding block, and structure design has an advantage in that

1, the offer pretightning force of spring, disc spring etc is not provided；

2. the component for providing rotary torsion is arranged in an airtight cavity, the risk of oil leak is not had；

3. it is different big to can be realized simultaneously rotary torsion on and off, and can control rotary torsion and linearly become Change；

4. can be realized simultaneously in a certain Partial angle, only a direction torsion becomes smaller, rather than will be on and off Both direction rotary torsion becomes smaller simultaneously.

Therefore, the utility model tool can satisfy the opposite of electronic equipment there are two the closed change torque rotary shaft of sliding block and turn Dynamic diversified demand.

Embodiment 2

As shown in Fig. 6, Fig. 7 and Fig. 8, a kind of closed change torque rotary shaft with a sliding block is present embodiments provided, Including shell 1,2, sliding blocks 3 of rotation axis and two sliding rails.There are two the closings of sliding block for tool in the present embodiment 2 and embodiment 1 Formula becomes torque rotary shaft and compares, and difference resides in reduced a sliding block, and the structure of rotation axis, sliding rail and shell makes the corresponding changes Design, specific structure are as follows: a corresponding sliding block in the present embodiment, central spindle are equipped with a convex block of a corresponding sliding block, sliding rail Curved end on be formed with one section of spiral curved surface of corresponding sliding block, a sliding rail is shaped in the closed end of shell Side, another sliding rail are fixedly connected with inner walls, and are located at piston plate side.Preferably, the curved end of sliding rail by two sections not Level plane 404 and linking one section of spiral curved surface 402 between two planes form, and the side of sliding rail is formed with It is connected to the notch 403 of its center avoid holes；It is formed with a strip 103 in shell, strip and shell are integrally formed, and strip is from shell The closed end of body extends to another sliding rail, and the boss 104 with notch clamping is formed on the extension end face of strip.

Referring to Fig. 7, when assembly, sliding block is led into sliding groove first and is covered on convex block, then sliding rail is installed to sliding block and turned It is one by sliding block in this present embodiment, therefore sliding rail need not be divided into two sliding rail blocks and filled between the piston plate of moving axis Match, finally, the rotation axis for assembling sliding rail and sliding block is made the turning end of central spindle one end out of the insertion of the open end of shell shell Be inserted into the slot at housings close end, be rotatably assorted, the step backstop between central spindle and turning end in the opening of slot, It is positioned.In piston plate insertion shell in rotation axis, and be fitted close between the inner wall of shell, form one it is closed Cavity, and piston plate can be circumferentially rotated with respect to shell, and sliding block is made to be assembled to the corresponding spiral of two sliding rails just Between curved surface.In this way, rotation axis can drive sliding block to rotate during rotation, sliding block, can under the position-limiting action of rail structure It slides axially simultaneously, with the size for crossing liquid mouth being arranged by convex block adjusting slider side, to change the face that fluid passes through Product, is also achieved that the linear change of a certain angle rotary torsion.

The tool provided in above-described embodiment 1 there are two sliding block closed change torque rotary shaft in due to be provided with two cunnings Block, using the revolvable angle of its product will no more than 180 °, under normal circumstances due to topology requirement, can only open to 100 ° or so.And by slider designs at one in the present embodiment 2, product, which rotates angle, can be greater than 180 °, can theoretically connect Nearly 360 °, so as to better meet the rotation demand of electronic equipment greater angle.Therefore, the closed change of the present embodiment 2 is turned round Power shaft will be provided with following advantage:

1, the offer pretightning force of spring, disc spring etc is not provided；

2. the component for providing rotary torsion is arranged in an airtight cavity, the risk of oil leak is not had；

3. it is different big to can be realized simultaneously rotary torsion on and off, and can control rotary torsion and linearly become Change；

4. can be realized simultaneously in a certain Partial angle, only a direction torsion becomes smaller, rather than will be on and off Both direction rotary torsion becomes smaller simultaneously.

5. product, which rotates angle, can be greater than 180 °, it theoretically can be close to 360 °.

Above embodiments are that the preferred embodiment of the utility model is described in detail referring to attached drawing.The skill of this field Art personnel are by carrying out modification or change on various forms, but the feelings of the essence without departing substantially from the utility model to above-described embodiment Under condition, all fall within the scope of the present invention.

Claims (10)

1. a kind of closed change torque rotary shaft, it is characterised in that: including shell open at one end closed at one end, the closing shell Open end formed airtight cavity and can relative to the shell rotate rotation axis, by the rotation axis driving it is described close to disturb An at least sliding block for the damping fluid injected in closed chamber body and the sliding block can be driven to slide axially to adjust and be set to the sliding block The rail structure of the size for crossing liquid mouth of side.

2. closed change torque rotary shaft according to claim 1, it is characterised in that: it is formed with sliding groove on the sliding block, The liquid mouth of crossing is set to the side of the sliding block and is connected to the sliding groove, and the rotation axis includes central spindle, covers in the central spindle It outer piston plate and is formed in convex positioned at being matched with the sliding groove of the sliding block for the piston plate side in the central spindle Block；The piston plate closes the open end of the shell, forms the airtight cavity, and the convex block and the sliding block are located at described In airtight cavity, the sliding groove covers on the convex block, and can the relatively described convex block slide axially, in sliding process lead to It crosses the convex block and adjusts the size for crossing liquid mouth, the rail structure includes two sliding rails set on the sliding block both ends, often The center of a sliding rail has the avoid holes for avoiding the central spindle, is formed on the opposite face of two sliding rails and matches with the sliding block The spiral curved surface of conjunction, the distance between two spiral curved surfaces of two sliding rails can just accommodate the sliding block.

3. closed change torque rotary shaft according to claim 2, it is characterised in that: the sliding block there are two setting, the axis Core is equipped with two convex blocks of corresponding two sliding blocks, and two convex blocks are divided into the opposite two sides of the central spindle On, two sections of spiral curved surfaces of corresponding two sliding blocks are formed in the curved end of the sliding rail.

4. closed change torque rotary shaft according to claim 3, it is characterised in that: a sliding rail is shaped in institute On the inside of the closed end for stating shell, another described sliding rail is fixedly connected with the inner walls, and is located at the piston plate side.

5. closed change torque rotary shaft according to claim 4, it is characterised in that: opposite two sides are formed in the shell There are two strip, the strip and the shell are integrally formed, and between two sections of spiral curved surfaces of the sliding rail, institute Strip is stated to extend from the closed end of the shell to another sliding rail；Another sliding rail is spliced by two sliding rail blocks, One section of spiral curved surface is formed on each sliding rail block, the position of two sliding rail blocks splicing is formed with to be clamped with the strip Groove.

6. closed change torque rotary shaft according to claim 2, it is characterised in that: be equipped with a sliding block, the axis Core is equipped with a convex block of the corresponding sliding block, and one section of the corresponding sliding block is formed in the curved end of the sliding rail Spiral curved surface, a sliding rail are shaped on the inside of the closed end of the shell, another described sliding rail with it is described Inner walls are fixedly connected, and are located at the piston plate side.

7. closed change torque rotary shaft according to claim 6, it is characterised in that: the curved end of the sliding rail by two sections not Level plane and linking one section of spiral curved surface composition between two planes, and the side of the sliding rail is formed with company Lead to the notch of its center avoid holes；A strip is formed in the shell, the strip and the shell are integrally formed, described Strip extends from the closed end of the shell to another sliding rail, is formed with and the notch on the extension end face of the strip The boss of clamping.

8. closed change torque rotary shaft according to claim 2, it is characterised in that: it further include an end cover, it is described close Sealing end lid is including being sheathed on the set portion between the central spindle and the shell and covering the cover on the open end in the shell, institute It states and is connected with seal washer between end cover and the outside of the piston plate, connected between the end cover and the central spindle Have and is equipped with O-ring.

9. closed change torque rotary shaft according to claim 2, it is characterised in that: have on the outside of the closed end of the shell The first connecting pin for being connect with external first rotor, the central spindle expose to the housing parts be formed with for it is outer The second connection end of the second rotor of portion connection, the central spindle are arranged in the intracorporal one end of the closed chamber and form turning end, institute It states and is formed with the slot being rotatably assorted with the turning end on the inside of the closed end of shell.

10. a kind of electronic equipment, it is characterised in that: including any one of the first rotor, the second rotor and claim 1-9 institute Closed change torque rotary shaft is stated, first rotor is fixedly connected with the shell, second rotor and the rotation Axis is fixedly connected.