CN218092588U

CN218092588U - Positive and negative damping-adjustable primary and secondary hinge and rotary switch device

Info

Publication number: CN218092588U
Application number: CN202222187797.3U
Authority: CN
Inventors: 蓝日兴
Original assignee: Shenzhen Luluxing Electronic Co ltd
Current assignee: Shenzhen Luluxing Electronic Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-20
Anticipated expiration: 2032-08-18

Abstract

The utility model is suitable for a hinged joint technical field. The utility model discloses a positive but reverse adjustable damping's primary and secondary hinge and rotary switch device, including son hinge and female hinge to and locate the damping pivot mechanism between son hinge and the female hinge, damping pivot mechanism includes the pivot fixed with son hinge, and this pivot both ends are located the female shaft hole of first mother shaft hole and second on the female hinge respectively, the pivot both ends are fixed with first one-way bearing subassembly and the one-way bearing subassembly of second respectively, and this first one-way bearing subassembly is opposite with the one-way bearing subassembly installation opposite direction of second. Because the rotating shafts are respectively provided with the unidirectional bearing assemblies in opposite directions, the damping at the two ends of the rotating shafts is respectively adjusted to realize different damping when the rotating shafts rotate forwards and backwards, so that the requirements of the application occasions are better adapted. When the door is used on a door, the damping for closing the door is increased through proper adjustment, the damping for opening the door is proper, the wind-blowing prevention and the clamping prevention can be realized, the door opening is not influenced, and the door can be widely used on objects needing a rotary switch.

Description

Positive and negative damping-adjustable primary and secondary hinge and rotary switch device

Technical Field

The utility model relates to a hinged joint technical field, in particular to adjustable damped primary and secondary hinge of forward and reverse and rotary switch device.

Background

A rotating shaft, also referred to as simply a shaft, is generally the necessary component between two components that are in rotational relationship, and which normally is subjected to a rotational torque in the direction of rotation, and in certain situations, such as horizontal rotation, is also subjected to a bending moment perpendicular to a plane parallel to the direction of rotation. It is widely used in kitchen cabinets and doors. For opening convenience, a mechanism with a damping function of the belt is usually provided, but the mechanism with the damping function usually has bidirectional damping, and although clamping can be prevented when the mechanism is closed, the difficulty of opening is increased due to the damping function when the mechanism is opened.

The existing damping rotating shaft can not realize unidirectional rotating damping which can generate damping in one rotating direction and can not generate damping in the other rotating direction. For example, the one-way damping rotating shaft disclosed in chinese patent No. CN207935274U can also realize one-way rotation to generate damping, but the structure is complicated and has high difficulty in processing and assembling.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a positive and negative adjustable damped primary and secondary hinge, and this positive and negative adjustable damped primary and secondary hinge can realize that positive and negative rotation direction arbitrary damping is adjustable, simple structure is compact, and assembly efficiency is high.

In order to solve the problem, the utility model provides a positive and negative adjustable damping's primary and secondary hinge, this positive and negative adjustable damping's primary and secondary hinge, including son hinge and female hinge to and locate the damping pivot mechanism between son hinge and the female hinge, damping pivot mechanism includes the pivot fixed with son hinge, and this pivot both ends are located the first female shaft hole and the female shaft hole of second on the female hinge respectively, the pivot both ends are fixed with the one-way bearing assembly of first one-way bearing assembly and second respectively, and this one-way bearing assembly is opposite with the one-way bearing assembly installation opposite direction of second.

Further, the first one-way bearing assembly includes at least one first one-way bearing.

Furthermore, when the number of the first one-way bearings is two or more, each first one-way bearing is fixed at one end of the rotating shaft in the same direction in series.

Further, the second one-way bearing assembly includes at least one second one-way bearing.

Furthermore, when the number of the second one-way bearings is two or more, each second one-way bearing is connected in series in the same direction and fixed at the other end of the rotating shaft, and each second one-way bearing is opposite to the first one-way bearing in direction.

Furthermore, the second one-way bearing assembly comprises a second one-way bearing which is positioned in the second female shaft hole and is sleeved at one end of the rotating shaft in a direction opposite to that of the first one-way bearing, two second stop pieces which are sleeved on the rotating shaft and positioned at the outer side of the second one-way bearing, two elastic pieces which are positioned between the two second stop pieces, and a second nut which is arranged at the outer side of one second stop piece and fixed with the rotating shaft.

Furthermore, the first one-way bearing assembly further comprises two first stop pieces sleeved on the rotating shaft and located outside the first one-way bearing, two first elastic pieces located between the two first stop pieces, and a first nut arranged outside one first stop piece and fixed with the rotating shaft.

And furthermore, limiting structures are respectively arranged between the first one-way bearing and the first female shaft hole and between the second one-way bearing and the second female shaft hole.

Furthermore, the limiting structure comprises a first female shaft hole positioning groove arranged in the first female shaft hole, a first one-way bearing positioning groove arranged in the first one-way bearing, and a stop needle arranged between the first female shaft hole positioning groove and the first one-way bearing positioning groove; or the locking pin comprises a second female shaft hole positioning groove arranged on the second female shaft hole, a second one-way bearing positioning groove arranged on the second one-way bearing and a locking pin arranged between the second female shaft hole positioning groove and the second one-way bearing positioning groove.

Furthermore, the first female shaft hole positioning grooves and the first one-way bearing positioning grooves are the same in number and are located correspondingly.

Furthermore, the number of the first one-way bearing positioning grooves is three, and the first one-way bearing positioning grooves are uniformly distributed in the circumferential direction of the first one-way bearing respectively.

Furthermore, the second female shaft hole positioning grooves and the second one-way bearing positioning grooves are the same in number and are located correspondingly.

Furthermore, the number of the second one-way bearing positioning grooves is three, and the second one-way bearing positioning grooves are uniformly distributed in the circumferential direction of the second one-way bearing respectively.

Furthermore, the first female shaft hole and the second female shaft hole are positioned on the same straight line.

Furthermore, the sub-hinge is provided with a sub-shaft hole for installing the rotating shaft, and the sub-shaft hole is provided with a fixing pin for fixing the rotating shaft.

Furthermore, gaskets are sleeved between two ends of the auxiliary shaft hole and the first main shaft hole and between two ends of the rotating shaft and the second main shaft hole.

Furthermore, the elastic sheet is a butterfly-shaped elastic sheet.

The utility model also provides a rotary switch device, this rotary switch device include reverse adjustable damping's primary and secondary hinge, this positive and negative adjustable damping's primary and secondary hinge, including son hinge and female hinge to and locate the damping pivot mechanism between son hinge and the female hinge, damping pivot mechanism includes the pivot fixed with son hinge, and this pivot both ends are located the first female shaft hole and the female shaft hole of second on the female hinge respectively, the pivot both ends are fixed with first one-way bearing assembly and the one-way bearing assembly of second respectively, and this one-way bearing assembly is opposite with the one-way bearing assembly installation direction of second.

Furthermore, the second female shaft hole positioning grooves and the second one-way bearing positioning grooves are the same in number and are correspondingly positioned.

Further, the first female shaft hole and the second female shaft hole are located on the same straight line.

Furthermore, the elastic sheet is a butterfly-shaped elastic sheet.

The utility model discloses adjustable damped primary and secondary hinge of forward and reverse, including son hinge and female hinge to and locate the damping pivot mechanism between son hinge and the female hinge, damping pivot mechanism includes the pivot fixed with son hinge, and this pivot both ends are located the first female shaft hole and the female shaft hole of second on the hinge respectively, the pivot both ends are fixed with first one-way bearing subassembly and the one-way bearing subassembly of second respectively, and this first one-way bearing subassembly and the one-way bearing subassembly of second installation opposite direction. Because the rotating shafts are respectively provided with the unidirectional bearing assemblies in opposite directions, the damping at the two ends of the rotating shafts is respectively adjusted to realize different damping when the rotating shafts rotate forwards and backwards, so that the requirements of the application occasions are better adapted. When the door is used on a door, the damping for closing the door is increased through proper adjustment, the damping for opening the door is proper, the wind-blowing prevention and the clamping prevention can be realized, the door opening is not influenced, and the door can be widely used on objects needing a rotary switch. Meanwhile, when the damping size needs to be adjusted, the damping can be adjusted by adjusting the damping size between the stop pin and the rotating shaft, so that different requirements of users can be better met.

Drawings

In order to illustrate more clearly the embodiments of the invention or the solutions of the prior art, reference will now be made briefly to the attached drawings that are needed in the description of the embodiments or the prior art, it being understood that the drawings in the description illustrate only some embodiments of the invention and are therefore not to be considered limiting of its scope, and that, to a person skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural view of the embodiment of the primary and secondary hinge with damping adjustable in forward and reverse directions.

Fig. 2 is a schematic diagram of the embodiment of the primary and secondary hinge with adjustable damping in the forward and reverse directions according to the present invention.

Fig. 3 is a schematic diagram of an orthographic projection structure along a direction perpendicular to the rotation axis.

Fig. 4 isbase:Sub>A schematic sectional view along the directionbase:Sub>A-base:Sub>A in fig. 3.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The following claims are presented in conjunction with specific embodiments and the accompanying drawings, it being understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, those skilled in the art can find out all other embodiments without creative efforts, and all the embodiments also belong to the protection scope of the present invention.

It should be understood that in the embodiments of the present invention, all directional terms such as "upper", "lower", "left", "right", "front", "back", etc. are used to describe the orientation or position relationship of the present invention based on the orientation or position relationship shown in the drawings or the orientation or position relationship of the product in use, which is usually used to describe the present invention, and not to explicitly or implicitly describe that the device, element or part referred to must have a specific orientation and a specific orientation configuration, which should not be construed as limiting the present invention. For the purpose of explaining only the relative positional relationship between the respective components, the movement, and the like, as shown in the drawings, when the specific posture is changed, the directional indication may be changed accordingly.

Furthermore, the use of ordinal numbers such as "first", "second", etc., in the present application is for distinguishing purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. The features defining "first" and "second" may be explicit or implicit in relation to at least one of the technical features. In the description of the present invention, "a plurality" means at least two, i.e., two or more, unless expressly defined otherwise; the meaning of "at least one" is one or both.

In the present invention, unless explicitly specified or limited otherwise, the terms "mounting," "setting," "connecting," "fixing," "screwing" and the like are to be understood in a broad sense, and for example, the positional relationship between the components may be relatively fixed, or the components may be physically fixed and connected, or may be detachably connected, or may be integrated into a single structure; the connection can be mechanical connection or electrical signal connection; either directly or indirectly through intervening media or components; the two elements may be connected to each other or may be in an interaction relationship with each other, and unless otherwise explicitly limited by the specification, the specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations, except that the corresponding function or effect cannot be achieved in other understanding.

The controller and the control circuit that may be involved in the present invention are conventional control techniques or units for those skilled in the art, and the control circuit such as the controller may be implemented by those skilled in the art using existing techniques, such as simple programming. The power also adopts belong to this field of prior art, and the utility model discloses main utility model technical point lies in improving mechanical device, so the utility model discloses no longer explain in detail concrete circuit control relation and circuit connection.

As shown in fig. 1-4, the utility model provides a primary and secondary hinge embodiment with adjustable damping in forward and reverse directions.

This adjustable damped primary and secondary hinge of positive reverse includes son hinge 2 and mother hinge 1 to and locate the damping pivot mechanism between son hinge 2 and the mother hinge 1, damping pivot mechanism includes pivot 3 fixed with

son hinge

2, and 3 both ends of this pivot are located the female shaft hole 12 of first mother on the mother hinge 1 and the female shaft hole 13 of second respectively, 3 both ends of pivot are fixed with first one-way bearing subassembly 4 and the one-way bearing subassembly 5 of second respectively, and this first one-way bearing subassembly 4 is opposite with the one-way bearing subassembly 5 installation direction of second.

Specifically, the sub-hinge 2 is provided with a fixing hole 21 for fixing the rotating shaft 3 and a plurality of sub-mounting holes 22 for mounting, each sub-mounting hole 22 is distributed on different straight lines, namely, the sub-mounting holes are arranged on different straight lines, the sub-hinge 2 is further provided with a positioning hole 23 for fixing the rotating shaft 3, and the rotating shaft 3 is fastened on the sub-hinge 2 through the cooperation of the fixing pin 6 and the positioning hole 23. According to the requirement, the rotating shaft 3 and the sub-hinge 2 are kept in a relative static state, namely, the rotating shaft 3 and the sub-hinge 2 do not rotate and displace during working. The rotation displacement between the rotating shaft 3 and the sub-hinge 2 can be prevented and other modes can be informed to realize, for example, the fixing hole 21 is set to be a non-circular hole such as a square hole, and the section of the rotating shaft 3 is matched with the fixing hole. The unidirectional bearing assembly in this embodiment means that less damping can be achieved when rotating in one direction, such as forward rotation, and greater damping can be achieved when rotating in the opposite direction, such as reverse rotation.

Female hinge 1 is equipped with opening 11 and a plurality of female mounting holes 14 that are used for the installation of accomodating son hinge 2, and this opening 11 both sides are equipped with first mother axle hole 12 and second mother axle hole 13 respectively, first mother axle hole 12 sets up on same straight line with second mother axle hole 13. The plurality of female mounting holes 14 are not aligned.

The first one-way bearing assembly 4 is mounted in the opposite direction to the second one-way bearing assembly 5, which means that the rotational damping direction is opposite. The first one-way bearing assembly 4 comprises a first one-way bearing 41, two first stop pieces 43, two first elastic pieces 44 and a first nut 45, wherein the first one-way bearing 41 is positioned in the first female shaft hole 12 and is sleeved at one end of the rotating shaft 3, the two first stop pieces 43 are sleeved on the rotating shaft 3 and positioned outside the first one-way bearing 41, the two first elastic pieces 44 are positioned between the two first stop pieces 43, the first nut 45 is arranged outside one first stop piece 43 and fixed with the rotating shaft 3, the first elastic pieces 44 are butterfly-shaped elastic pieces, the first elastic pieces 44 provide continuous damping force for the first one-way bearing 41, and the rotation damping between the first one-way bearing 41 and the first female shaft hole 12 can be adjusted through the first nut 45.

Be equipped with the first limit structure that the during operation restricted first one-way bearing housing and take place the pivoted between first one-way bearing 41 and first female shaft hole 12, this first limit structure is including locating first female shaft hole constant head tank 121 in first female shaft hole 12 and locating first one-way bearing constant head tank 411 of first one-way bearing 12 to and locate first stop needle 42 between first female shaft hole constant head tank 121 and the first one-way bearing constant head tank 411.

The second one-way bearing assembly 5 comprises a second one-way bearing 51 which is positioned in the second parent shaft hole 13 and is sleeved at one end of the rotating shaft 3 and has the opposite direction to the first one-way bearing 41, two second stop pieces 53 which are sleeved on the rotating shaft 3 and positioned at the outer side of the second one-way bearing 51, two second elastic pieces 54 positioned between the two second stop pieces 53, and a second nut 55 which is arranged at the outer side of one second stop piece 53 and fixed with the rotating shaft 3, wherein the second elastic pieces 54 are butterfly-shaped elastic pieces, the second elastic pieces 54 provide continuous damping force for the second one-way bearing 51, and the rotation damping between the second one-way bearing 51 and the second parent shaft hole 13 can be adjusted through the second nut 55.

A second limiting structure which limits the second one-way bearing sleeve to rotate during working is arranged between the second one-way bearing 51 and the second female shaft hole 13, and the second limiting structure comprises a second female shaft hole positioning groove 131 arranged on the second female shaft hole 13, a second one-way bearing positioning groove 511 arranged on the second one-way bearing 51, and a second stop needle 52 arranged between the second female shaft hole positioning groove 131 and the second one-way bearing positioning groove 511. The first limiting structure and the second limiting structure are identical in limiting principle.

The second stopping pins 52 and the first stopping pins 42 have the same number, and the number and the position of the second stopping pins are respectively the same as the number and the position of the second one-way bearing positioning slot 511, the second female shaft hole positioning slot 131, the number and the position of the first one-way bearing positioning slot 411, and the number and the position of the first female shaft hole positioning slot 121. Namely, after any one stop pin is installed, the stop pin is matched with one female shaft hole positioning groove and one-way bearing positioning groove to fix the one-way bearing sleeve. First one-way bearing constant head tank quantity can set up as required, can set up one, two, a plurality of etc. and this embodiment adopts for three, and respectively evenly distributed in 41 circumferencial direction of first one-way bearing. The second one-way bearing positioning groove can also be arranged in the same way.

The number of the first one-way bearings 41 and the second one-way bearings 51 can be respectively set to be one, two or more, when the number is two or more, each first one-way bearing 41 is sleeved on the rotating shaft 3 in series in the same direction, each second one-way bearing 51 is sleeved on the other end of the rotating shaft 3 in series in the same direction, and each first one-way bearing 41 and each second one-way bearing 51 are opposite in direction.

Because the rotating shaft 3 is respectively provided with the one-way bearing assemblies in opposite directions, the damping at the two ends of the rotating shaft 3 can be respectively adjusted according to requirements when the forward and reverse rotation is realized through respectively adjusting the damping, so that the requirements of the application occasions are better adapted. When the door is used on a door, the damping for closing the door is increased through proper adjustment, the damping for opening the door is proper, the wind-blowing prevention and the clamping prevention can be realized, the door opening is not influenced, and the door can be widely used on objects needing a rotary switch. Meanwhile, when the damping size needs to be adjusted, the damping can be adjusted by adjusting the damping size between the stop pin and the rotating shaft, so that different requirements of users can be better met.

According to the needs, pivot 3 overlaps between the axle hole 21 both ends of son and first mother axle hole 12 and second mother axle hole 13 and has gasket 7, first locking needle 42 and second locking needle 52 tip can be adjustable with gasket 7 pressure size respectively, also can realize pivot 3 when rotating with the damping size of mother hinge, realize multiple regulation, have better accommodation.

As shown in fig. 1-4, the present invention also provides an embodiment of a rotary switch device.

This rotary switch device includes reverse adjustable damping's primary and secondary hinge, and this positive and negative adjustable damping's primary and secondary hinge includes son hinge 2 and mother hinge 1 to and locate the damping pivot mechanism between son hinge 2 and the mother hinge 1, damping pivot mechanism includes 3 with the fixed pivot of

son hinge

Specifically, the sub-hinge 2 is provided with a fixing hole 21 for fixing the rotating shaft 3 and a plurality of sub-mounting holes 22 for mounting, each sub-mounting hole 22 is distributed on different straight lines, namely, the sub-mounting holes are arranged on different straight lines, the sub-hinge 2 is further provided with a positioning hole 23 for fixing the rotating shaft 3, and the rotating shaft 3 is fastened on the sub-hinge 2 through the cooperation of the fixing pin 6 and the positioning hole 23. According to the requirement, the rotating shaft 3 and the sub-hinge 2 are kept in a relative static state, namely, the rotating shaft 3 and the sub-hinge 2 do not rotate and displace during working. The effect that the rotation displacement does not occur between the rotating shaft 3 and the sub-hinge 2 can also be realized by informing other modes, for example, the fixing hole 21 is set to be a non-circular hole such as a square hole, and the section of the rotating shaft 3 is matched with the non-circular hole.

Female hinge 1 is equipped with opening 11 and a plurality of female mounting holes 14 that are used for the installation of accomodating son hinge 2, and this opening 11 both sides are equipped with first mother axle hole 12 and second mother axle hole 13 respectively, first mother axle hole 12 sets up on same straight line with second mother axle hole 13. The plurality of female mounting holes 14 are not collinear.

The first one-way bearing assembly 4 and the second one-way bearing assembly 5 are installed in opposite directions, namely, the directions of rotation damping are opposite. The first one-way bearing assembly 4 comprises a first one-way bearing 41, two first stop pieces 43, two first elastic pieces 44 and a first nut 45, wherein the first one-way bearing 41 is positioned in the first female shaft hole 12 and is sleeved at one end of the rotating shaft 3, the two first stop pieces 43 are sleeved on the rotating shaft 3 and positioned outside the first one-way bearing 41, the two first elastic pieces 44 are positioned between the two first stop pieces 43, the first nut 45 is arranged outside one first stop piece 43 and fixed with the rotating shaft 3, the first elastic pieces 44 are butterfly-shaped elastic pieces, the first elastic pieces 44 provide continuous damping force for the first one-way bearing 41, and the rotation damping between the first one-way bearing 41 and the first female shaft hole 12 can be adjusted through the first nut 45.

A second limiting structure which limits the second one-way bearing sleeve to rotate during working is arranged between the second one-way bearing 51 and the second female shaft hole 13, and the second limiting structure comprises a second female shaft hole positioning groove 131 arranged on the second female shaft hole 13, a second one-way bearing positioning groove 511 arranged on the second one-way bearing 51, and a second stop needle 52 arranged between the second female shaft hole positioning groove 131 and the second one-way bearing positioning groove 511. The first limiting structure and the second limiting structure are the same in limiting principle.

The number of the first one-way bearings 41 and the second one-way bearings 51 can be respectively set to be one, two or more, when the number is two or more, each first one-way bearing 41 is sleeved on the rotating shaft 3 in series in the same direction, each second one-way bearing 51 is sleeved on the other end of the rotating shaft 3 in series in the same direction, and the direction of each first one-way bearing 41 is opposite to that of each second one-way bearing 51.

Because the rotating shaft 3 is respectively provided with the one-way bearing assemblies in opposite directions, the damping of the two ends of the rotating shaft 3 can be respectively adjusted according to requirements when the forward and reverse rotation is realized through respectively adjusting the damping, so that the requirements of the application occasions are better adapted. When the door is used on a door, the damping for closing the door is increased through proper adjustment, the damping for opening the door is proper, the wind-blowing prevention and the clamping prevention can be realized, the door opening is not influenced, and the door can be widely used on objects needing a rotary switch. Meanwhile, when the damping size needs to be adjusted, the damping can be adjusted by adjusting the damping size between the stop pin and the rotating shaft, so that different requirements of users can be better met.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.

Claims

1. The utility model provides a positive adjustable damped primary and secondary hinge of reversal, includes son hinge and female hinge to and locate the damping pivot mechanism between son hinge and the female hinge, its characterized in that, damping pivot mechanism includes the pivot fixed with son hinge, and this pivot both ends are located the female shaft hole of first mother shaft hole and second on the female hinge respectively, the pivot both ends are fixed with first one-way bearing assembly and the one-way bearing assembly of second respectively, and this first one-way bearing assembly is opposite with the one-way bearing assembly installation of second direction.

2. The primary and secondary hinge with damping adjustable in forward and reverse directions as claimed in claim 1, wherein: the first one-way bearing assembly includes at least one first one-way bearing.

3. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 2, wherein: when the number of the first one-way bearings is two or more, each first one-way bearing is fixed at one end of the rotating shaft in the same direction in series.

4. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 2, wherein: the second unidirectional bearing assembly includes at least one second unidirectional bearing.

5. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 4, wherein: when the number of the second one-way bearings is two or more, each second one-way bearing is in the same direction and is connected in series to be fixed at the other end of the rotating shaft, and each second one-way bearing is opposite to the first one-way bearing in direction.

6. The primary and secondary hinge with damping adjustable in forward and reverse directions as claimed in claim 4, wherein: the second one-way bearing assembly comprises a second one-way bearing, two second stop pieces, two elastic pieces and a second nut, wherein the second one-way bearing is located in the second female shaft hole and sleeved at one end of the rotating shaft and opposite to the first one-way bearing in direction, the two second stop pieces are sleeved on the rotating shaft and located on the outer side of the second one-way bearing, the two elastic pieces are located between the two second stop pieces, and the second nut is arranged on the outer side of one second stop piece and fixed with the rotating shaft.

7. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 2, wherein: the first one-way bearing assembly further comprises two first stop pieces, two first elastic pieces and a first nut, wherein the two first stop pieces are sleeved on the rotating shaft and located on the outer side of the first one-way bearing, the two first elastic pieces are located between the two first stop pieces, and the first nut is arranged on the outer side of one first stop piece and fixed with the rotating shaft.

8. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 1, wherein: and limiting structures are respectively arranged between the first one-way bearing and the first female shaft hole and between the second one-way bearing and the second female shaft hole.

9. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 8, wherein: the limiting structure comprises a first female shaft hole positioning groove arranged in the first female shaft hole, a first one-way bearing positioning groove arranged in the first one-way bearing, and a stop pin arranged between the first female shaft hole positioning groove and the first one-way bearing positioning groove; or comprises a second female shaft hole positioning groove arranged on the second female shaft hole, a second one-way bearing positioning groove arranged on the second one-way bearing, and a stop pin arranged between the second female shaft hole positioning groove and the second one-way bearing positioning groove.

10. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 9, wherein: the first female shaft hole positioning groove and the first one-way bearing positioning groove are the same in number and are located correspondingly, and the second female shaft hole positioning groove and the second one-way bearing positioning groove are the same in number and are located correspondingly.

11. The primary and secondary hinge with damping adjustable in forward and reverse directions as claimed in claim 10, wherein: the number of the first one-way bearing positioning grooves is three, and the first one-way bearing positioning grooves are uniformly distributed in the circumferential direction of the first one-way bearing respectively; the number of the second one-way bearing positioning grooves is three, and the second one-way bearing positioning grooves are uniformly distributed in the circumferential direction of the second one-way bearing respectively.

12. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 1, wherein: the first female shaft hole and the second female shaft hole are located on the same straight line.

13. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 1, wherein: the sub-hinge is provided with a sub-shaft hole for installing the rotating shaft, and the sub-shaft hole is provided with a fixing pin for fixing the rotating shaft.

14. The primary-secondary hinge with damping adjustable in forward and reverse directions as in claim 1, wherein: and gaskets are sleeved between the two ends of the secondary shaft hole and the first and second primary shaft holes of the rotating shaft.

15. The utility model provides a rotary switch device, includes primary and secondary hinge, its characterized in that: the primary and secondary hinge has the primary and secondary hinge with adjustable damping in forward and reverse directions as claimed in any one of claims 1 to 14.