Keyboard rotating shaft and keyboard

Abstract

The utility model discloses a keyboard rotating shaft and a keyboard. The keyboard rotating shaft comprises a core shaft, a locking piece, a shaft sleeve and an elastic element, the locking piece is slidably arranged on the core shaft in a sleeving mode, and a protrusion is arranged on the locking piece; the shaft sleeve is rotatably arranged on the core shaft in a sleeving mode, the shaft sleeve is provided with an abutting face used for abutting against the protrusion, the abutting face is provided with a first groove and a second groove, the first groove and the second groove are distributed in the circumferential direction of the core shaft at intervals, the first groove is in a long strip shape extending in the circumferential direction of the core shaft, and the second groove is in a long strip shape extending in the circumferential direction of the core shaft. The shaft sleeve is arranged in the first groove and can allow the protrusion to slide in the first groove in the circumferential direction of the core shaft, the second groove is matched with the protrusion, and the shaft sleeve can rotate around the core shaft under the action of external force so as to be switched between a first state and a second state; the elastic element is arranged on the side, away from the shaft sleeve, of the locking piece, is connected with the locking piece and the core shaft and is used for providing elastic force enabling the protrusion to keep abutting against the abutting face. The keyboard adopting the keyboard rotating shaft has better use experience.

Description

TECHNICAL FIELD

[0001] The utility model relates to keyboard structure technical field, especially a keyboard pivot and keyboard. BACKGROUND

[0002] The flat keyboard on the market is mainly composed of a bottom plate, a folding plate and a keyboard pivot, the bottom plate and the folding plate are connected by the keyboard pivot, and the folding plate is rotated relative to the bottom plate to realize the closing or complete opening of the keyboard. In the related art, the keyboard pivot comprises a mandrel, a shaft sleeve and an elastic element, the mandrel can rotate relative to the shaft sleeve when the bottom plate and the folding plate rotate relative to each other, the mandrel is provided with a locking piece, the elastic element can provide an elastic force for the locking piece to keep the locking piece in abutment with the shaft sleeve, the locking piece is provided with a protrusion, and the surface of the shaft sleeve close to the locking piece is provided with two grooves. When the keyboard is in the closed state, the protrusion is arranged in one of the grooves to make the keyboard self-lock in the closed state. When the keyboard is in the completely open state, the protrusion is arranged in the other groove to make the keyboard self-lock in the completely open state. Thus, the keyboard can be in a self-locking state whether it is in the closed state or the completely open state. However, when the keyboard is in the closed state, the protrusion is arranged in one of the grooves, so that the user needs to exert a large force to make the protrusion disengage from the groove at the beginning of opening the keyboard, which affects the user experience. SUMMARY

[0003] The utility model aims at least to solve one of the technical problems existing in the prior art. To this end, the utility model discloses a keyboard pivot in the first aspect, and the keyboard adopting the keyboard pivot has better user experience.

[0004] The utility model discloses a keyboard in the second aspect.

[0005] According to the keyboard pivot in the first aspect of the utility model, the locking piece is slidably sleeved on the mandrel, the locking piece is provided with a protrusion, the shaft sleeve is rotatably sleeved on the mandrel, the shaft sleeve is provided with an abutment surface for abutting with the protrusion, the abutment surface is provided with a first groove and a second groove, the first groove and the second groove are distributed along the circumference of the mandrel, the first groove is a long strip shape extending along the circumference of the mandrel, and the first groove can allow the protrusion to slide along the circumference of the mandrel in the first groove, the second groove is matched with the protrusion, under the action of an external force, the shaft sleeve can rotate around the mandrel to switch between the first state and the second state, when the shaft sleeve is in the first state, the protrusion is inserted into the first groove, and when the shaft sleeve is in the second state, the protrusion is inserted into the second groove, the elastic element is arranged on the side, away from the shaft sleeve, of the locking piece, the elastic element is connected with the locking piece and the mandrel respectively, and the elastic element is used for providing the elastic force for keeping the protrusion abutting with the abutment surface.

[0006] A keyboard hinge according to a first aspect embodiment of the present invention has at least the following technical effects:

[0007] When the keyboard hinge of this application is applied to a keyboard, the hinge sleeve is connected to the base plate, and the hinge is connected to the folding plate. When the hinge sleeve is in the first state, the surface of the base plate is in contact with the surface of the folding plate, and the keyboard is in a folded state. When the hinge sleeve is in the second state, the base plate and the folding plate are opened at a certain angle, and the keyboard is in an open state. During the opening process of the keyboard, the protrusion first slides a certain distance along the first groove. During this process, the damping force between the spindle and the hinge sleeve is small and remains relatively constant. Then, the protrusion disengages from the first groove and abuts against the contact surface. Next, the protrusion slides a certain distance along the contact surface. During this process, the damping force between the spindle and the hinge sleeve is large and remains relatively constant. Then, the protrusion inserts into the second groove, and the keyboard is in an open state. Thus, the keyboard using the keyboard hinge of this application can be initially opened with a small force, resulting in a better user experience.

[0008] According to a first aspect of the present invention, a keyboard hinge further includes a torsion spring, which is connected to a spindle and a bushing respectively, and is used to provide elastic force to rotate the protrusion along the abutment surface from the first groove to the second groove.

[0009] According to a first aspect of the present invention, a keyboard hinge has one end of a torsion spring detachably connected to a spindle and the other end of the torsion spring detachably connected to a bushing.

[0010] According to a first aspect embodiment of the present invention, a keyboard hinge has a first abutting structure and a second abutting structure on the spindle, and a first limiting structure and a second limiting structure on the bushing. When the keyboard hinge is in a first state, the first limiting structure and the first abutting structure abut against each other. When the keyboard hinge is in a second state, the second limiting structure and the second abutting structure abut against each other.

[0011] According to a first aspect of the present invention, a keyboard hinge has a through hole formed on the bushing, a spindle passing through the through hole, and two limiting protrusions provided on the wall of the through hole. The two limiting protrusions are distributed at intervals along the circumference of the spindle, and the two limiting protrusions respectively form a first limiting structure and a second limiting structure. The spindle is provided with an abutment protrusion extending radially, and along the circumference of the spindle, the two opposite end faces of the abutment protrusion respectively form a first abutment structure and a second abutment structure.

[0012] According to a first aspect of the present invention, a keyboard hinge has a receiving groove on the side of the bushing near the locking member, the bottom of the receiving groove forming an abutment surface, and the locking member is at least partially received in the receiving groove.

[0013] According to the keyboard rotating shaft of the first aspect of the utility model, the core shaft is further provided with a limiting nut, the limiting nut is in threaded connection with the core shaft, and is located on the side of the locking piece away from the shaft sleeve, the elastic element is arranged between the limiting nut and the locking piece, one end of the elastic element is in abutment with the locking piece, and the other end of the elastic element is in abutment with the limiting nut.

[0014] According to the keyboard rotating shaft of the first aspect of the utility model, the core shaft is further provided with a limiting nut, the limiting nut is in threaded connection with the core shaft, and is located on the side of the locking piece away from the shaft sleeve, the elastic element is arranged between the limiting nut and the locking piece, one end of the elastic element is in abutment with the locking piece, and the other end of the elastic element is in abutment with the limiting nut.

[0015] According to the keyboard of the second aspect of the utility model, the core shaft is further provided with a limiting nut, the limiting nut is in threaded connection with the core shaft, and is located on the side of the locking piece away from the shaft sleeve, the elastic element is arranged between the limiting nut and the locking piece, one end of the elastic element is in abutment with the locking piece, and the other end of the elastic element is in abutment with the limiting nut.

[0016] According to the keyboard of the second aspect of the utility model, the core shaft is further provided with a limiting nut, the limiting nut is in threaded connection with the core shaft, and is located on the side of the locking piece away from the shaft sleeve, the elastic element is arranged between the limiting nut and the locking piece, one end of the elastic element is in abutment with the locking piece, and the other end of the elastic element is in abutment with the limiting nut.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, wherein:

[0019] Figure 1 It is the structural schematic diagram of the keyboard rotating shaft of one embodiment of the utility model;

[0020] Figure 2 It is the structural schematic diagram of the keyboard rotating shaft in Figure 1 ;

[0021] Figure 3 It is the structural schematic diagram of the shaft sleeve in Figure 1 ;

[0022] Figure 4 It is the sectional view of the core shaft and the shaft sleeve in Figure 1 ;

[0023] Figure 5 It is the structural schematic diagram of the keyboard of one embodiment of the utility model;

[0024] Figure 6 As Figure 5 The exploded structural schematic view of the keyboard in

[0025] Reference signs:

[0026] mandrel 100, abutting protrusion 110, first abutting structure 111, second abutting structure 112;

[0027] locking piece 200, protrusion 210, through hole 220;

[0028] shaft sleeve 300, penetrating hole 301, accommodating groove 302, abutting surface 310, first recess 311, second recess 312, first limiting structure 320, second limiting structure 330, friction strip 340;

[0029] elastic element 400;

[0030] torsion spring 500;

[0031] limiting nut 600;

[0032] folding plate 700, mounting hole 701;

[0033] bottom plate 800;

[0034] sound-absorbing piece 900. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0036] In the description of the present application, it should be understood that, if there is a description of orientation, for example, the orientation or position relationship indicated by up, down, left, right, front, back, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0037] In the description of the present application, if there is a description of first, second, etc. only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] The following is for reference. Figures 1 to 4 A keyboard hinge according to the first aspect of this utility model will be described in detail.

[0040] refer to Figures 1 to 3 According to a first aspect of the present invention, a keyboard hinge includes a spindle 100, a locking member 200, a bushing 300, and an elastic element 400. The locking member 200 is slidably sleeved on the spindle 100 and has a protrusion 210. The bushing 300 is rotatably sleeved on the spindle 100 and has an abutment surface 310 for abutting against the protrusion 210. The abutment surface 310 has a first groove 311 and a second groove 312. The first groove 311 and the second groove 312 are spaced apart circumferentially along the spindle 100. The first groove 311 is an elongated strip extending circumferentially along the spindle 100 and can accommodate the protrusion 210. 10 slides circumferentially along the spindle 100 within the first groove 311. The second groove 312 is adapted to accommodate the protrusion 210. Under external force, the bushing 300 can rotate around the spindle 100 to switch between a first state and a second state. When the bushing 300 is in the first state, the protrusion 210 is inserted into the first groove 311. When the bushing 300 is in the second state, the protrusion 210 is inserted into the second groove 312. The elastic element 400 is disposed on the side of the locking member 200 away from the bushing 300. The elastic element 400 is connected to the locking member 200 and the spindle 100 respectively, and is used to provide elastic force to keep the protrusion 210 abutting the contact surface 310.

[0041] In the keyboard rotating shaft of the present application, when the shaft sleeve 300 is in the first state, the protrusion 210 in the locking piece 200 is inserted into the first groove 311 of the shaft sleeve 300, under the action of external force, the shaft sleeve 300 is driven to rotate around the mandrel 100 against the friction force between the protrusion 210 and the groove bottom of the first groove 311, at this time, the protrusion 210 on the locking piece 200 slides along the circumference of the mandrel 100 in the first groove 311, since the first groove 311 extends along the circumference of the mandrel 100, then the protrusion 210 can slide a certain distance in the first groove 311, continuing to drive the protrusion 210 to slide, the protrusion 210 can slide along the inclined groove side wall of the first groove 311 to disengage from the first groove 311 to abut against the abutment surface 310, and continue to slide a certain distance along the abutment surface 310 against the friction force between the protrusion 210 and the abutment surface 310, so that the protrusion 210 slides into the second groove 312, at this time the shaft sleeve 300 is in the second state, since the second groove 312 is adapted to the protrusion 210, when the protrusion 210 is inserted into the second groove 312, the groove side wall of the second groove 312 abuts against the protrusion 110 to prevent the protrusion 210 from disengaging from the second groove 312 along the groove side wall of the second groove 312.

[0042] When the keyboard rotating shaft of the present application is applied to a keyboard, the shaft sleeve 300 is connected with the bottom plate 800, and the mandrel 100 is connected with the folding plate 700, when the shaft sleeve 300 is in the first state, the surface of the bottom plate 800 is arranged to abut against the surface of the folding plate 700, at this time, the keyboard is in the folded state, when the shaft sleeve 300 is in the second state, the bottom plate 800 and the folding plate 700 are relatively opened at a certain angle, at this time, the keyboard is in the open state; in the process of opening the keyboard, the protrusion 210 first slides a certain distance along the first groove 311, in this process, since the first groove 311 has a certain depth, the elastic force given by the elastic element 400 to the locking piece 200 is smaller, the friction force between the protrusion 210 and the groove bottom of the first groove 311 is smaller, the damping force between the locking piece 200 and the shaft sleeve 300 is smaller and remains relatively constant, then the protrusion 210 disengages from the first groove 311 and abuts against the abutment surface 310, then the protrusion 210 slides a certain distance along the abutment surface 310, in this process, since the abutment surface 310 is closer to the locking piece 200 than the groove bottom of the first groove 311, the elastic force given by the elastic element 400 to the locking piece 200 becomes larger, the friction force between the protrusion 210 and the abutment surface 310 becomes larger, the mandrel 100 and the shaft sleeve 300 have a larger damping force and remain relatively constant, then the protrusion 210 is inserted into the second groove 312, and the keyboard is in the open state.

[0043] It can be understood that, in the opening process of the keyboard adopting the keyboard hinge of the present application, the user can first exert a small force to open the keyboard to a certain extent, and then continue to exert force until the keyboard is fully opened. When the keyboard is fully opened, the protrusion 210 is inserted into the second groove 312, and when the force exerted on the sleeve 300 is removed, the sleeve can be stably maintained in the second state to achieve self-locking of the keyboard. In the opening process of the keyboard adopting the keyboard hinge of the present application, the user can first exert a small force to preliminarily open the keyboard, and has a better experience in opening the keyboard on the premise of ensuring that the keyboard has normal self-locking capability.

[0044] It can be understood that, in the closing process of the keyboard adopting the keyboard hinge of the present application, the user needs to exert a part of force to overcome the elastic force provided by the elastic element 400 to the locking piece 200, so that the locking piece 200 is separated from the second groove 312, so that the sleeve 300 can rotate relative to the locking piece 200. The user also needs to exert a part of force to overcome the friction between the locking piece 200 and the sleeve 300, so that the user needs to exert a larger force when closing the keyboard, so that the user has the characteristics of opening light and closing heavy when using the keyboard.

[0045] Specifically, the elastic element 400 includes a plurality of butterfly-shaped elastic pieces stacked along the shaft 100 in the axial direction; the locking piece 200 is provided with a through hole 220, the shaft 100 passes through the through hole 220 and is adapted with the through hole 220, and the through hole 220 is a waist-shaped hole; the setting of the waist-shaped hole enables the locking piece 200 to stably rotate with the shaft 100.

[0046] Reference Figure 1 and Figure 2 In some embodiments of the present application, the keyboard hinge further comprises a torsional spring 500 connected with the shaft 100 and the sleeve 300, and used to provide elastic force for rotating the protrusion 210 from the first groove 311 to the second groove 312 along the abutment surface 310. It can be understood that, when the sleeve 300 is in the first state, the torsional spring 500 is in a twisted state, giving the sleeve 300 a torque, so that the protrusion 210 has a tendency to rotate from the first groove 311 to the second groove 312. In the process of switching the sleeve 300 from the first state to the second state, the torsional spring 500 relaxes, the torque decreases, and the torsional spring 500 provides elastic force to the sleeve 300 to rotate the protrusion 210 from the first groove 311 to the second groove 312 along the abutment surface 310. Thus, the user needs to exert less force in the process of switching the sleeve 300 from the first state to the second state, thereby further improving the user's experience.

[0047] It can be understood that the shaft sleeve 300 is in the second state, the torsional spring 500 is in a relaxed state, and in the process of switching the shaft sleeve 300 from the first state to the second state, the torsional spring 500 is tightened, the torque is increased, the torsional spring 500 applies elastic force to the shaft sleeve 300 to hinder the convex 210 from rotating from the second groove 312 into the second groove 312, so that the force required by the user to switch the shaft sleeve 300 from the second state to the first state is greater, thereby further enhancing the characteristics of the user opening the keyboard lightly and closing the keyboard heavily.

[0048] With reference to Figure 1 And Figure 2 In some embodiments, one end of the torsional spring 500 is detachably connected with the mandrel 100, and the other end of the torsional spring 500 is detachably connected with the shaft sleeve 300. It can be understood that by detachably connecting the two ends of the torsional spring 500 with the mandrel 100 and the shaft sleeve 300 respectively, when the shaft sleeve 300 is rotated multiple times and the torsional spring 500 is damaged, the torsional spring 500 can be individually detached from the keyboard shaft for replacement, thereby reducing maintenance costs.

[0049] With reference to Figure 4 In some embodiments of the utility model, the mandrel 100 is provided with a first abutting structure 111 and a second abutting structure 112, and the shaft sleeve 300 is provided with a first limiting structure 320 and a second limiting structure 330. When the shaft sleeve 300 is in the first state, the first limiting structure 320 and the first abutting structure 111 abut each other, and when the keyboard shaft is in the second state, the second limiting structure 330 and the second abutting structure 112 abut each other. It can be understood that under the action of external force, the shaft sleeve 300 rotates forward around the mandrel 100 until the second limiting structure 330 on the shaft sleeve 300 abuts against the second abutting structure 112 on the mandrel 100, at which time the shaft sleeve 300 cannot continue to rotate forward, and the shaft sleeve 300 is in the second state. Under the action of external force, the shaft sleeve 300 rotates reversely around the mandrel 100 until the first limiting structure 320 on the shaft sleeve 300 abuts against the first abutting structure 111 on the mandrel 100, at which time the shaft sleeve 300 cannot continue to rotate reversely, and the keyboard shaft is in the first state. The first abutting structure 111 and the second abutting structure 112 on the mandrel 100 and the first limiting structure 320 and the second limiting structure 330 on the shaft sleeve 300 enable the relative rotation between the shaft sleeve 300 and the mandrel 100 to be limited within a certain angle range, so that when the keyboard shaft of the embodiment is applied to a keyboard, the relative rotation angle between the bottom plate 800 and the folding plate 700 can be limited within a certain angle range, thereby enabling the opening degree of the keyboard to be limited within a certain angle range.

[0050] As Figure 4As shown, in some embodiments, the sleeve 300 is formed with a through hole 301, the mandrel 100 is arranged in the through hole 301, two limiting protrusions 210 are arranged on the hole wall of the through hole 301, the two limiting protrusions 210 are spaced apart along the circumference of the mandrel 100, and the two limiting protrusions 210 form a first limiting structure 320 and a second limiting structure 330, respectively; the mandrel 100 is provided with an abutting protrusion 110 extending along the radial direction of the mandrel 100, and opposite end faces of the abutting protrusion 110 along the circumference of the mandrel 100 form a first abutting structure 111 and a second abutting structure 112, respectively. It can be understood that the limiting protrusion 210 has a simple structure and can be integrally formed with the mandrel 100; the abutting protrusion 110 is integrally arranged with the mandrel 100, so that the abutting protrusion 110 can be integrally formed with the mandrel 100.

[0051] With reference to Figure 2 and Figure 3 In some embodiments of the utility model, the side of the sleeve 300 close to the locking piece 200 is provided with a containing groove 302, the groove bottom of the containing groove 302 forms an abutting face 310, and the locking piece 200 is at least partially contained in the containing groove 302. It can be understood that, since the locking piece 200 is at least partially contained in the containing groove 302, the locking piece 200 and the sleeve 300 occupy less space in the axial direction of the mandrel 100, the length of the mandrel 100 can be set smaller, so that the mandrel 100 has higher strength, and the overall structure of the keyboard rotating shaft can be set smaller; when the sleeve 300 rotates around the mandrel 100, the locking piece 200 is partially contained in the containing groove 302, so that the sleeve 300 is relatively stable during rotation relative to the mandrel 100.

[0052] With reference to Figure 1 and Figure 2In some embodiments of the utility model, still be provided with limit nut 600 on mandrel 100, limit nut 600 and mandrel 100 are connected in screw thread, and located the one side of locking piece 200 away from shaft sleeve 300, and elastic element 400 is arranged between limit nut 600 and locking piece 200, and one end of elastic element 400 is in abutment with locking piece 200, and the other end of elastic element 400 is in abutment with limit nut 600. It can be understood that, the user is through the positive screwing limit nut 600, to reduce the distance between limit nut 600 and locking piece 200, to compress elastic element 400, to make elastic element 400 exert on locking piece 200 the elastic force increase, to increase the friction between locking piece 200 and shaft sleeve 300, to improve the force that the driving shaft sleeve 300 is required to overcome when rotating relative to locking piece 200, the user is through the reverse screwing limit nut 600, to increase the distance between limit nut 600 and locking piece 200, to make elastic element 400 exert on locking piece 200 the elastic force decrease, to reduce the friction between locking piece 200 and shaft sleeve 300, to reduce the force that the driving shaft sleeve 300 is required to overcome when rotating relative to locking piece 200.

[0053] Need to explain, locking piece 200 and mandrel 100 synchronous rotation, when mandrel 100 relative shaft sleeve 300 rotates, locking piece 200 will rotate relative and elastic element 400, due to the gap between elastic element 400 and locking piece 200, will cause locking piece 200 to exist noise in the process of rotating.

[0054] Reference Figure 2 In some embodiments of the utility model, the keyboard rotating shaft further comprises a sound-absorbing sheet 900, the sound-absorbing sheet 900 is clamped and matched with the locking piece 200, the sound-absorbing sheet 900 is slidably sleeved on the mandrel 100 and located between the locking piece 200 and the elastic element 400. It can be understood that, by setting the sound-absorbing sheet 900 between the locking piece 200 and the elastic element 400, when the mandrel 100 rotates relative to the shaft sleeve 300, the sound-absorbing sheet 900 will rotate relative to the elastic element 400, and the gap between the sound-absorbing sheet 900 and the elastic element 400 is reduced, thereby reducing the noise generated when the mandrel 100 and the shaft sleeve 300 rotate.

[0055] The following references Figure 3 , Figure 5 and Figure 6 a keyboard of the second aspect embodiment of the utility model is described in detail.

[0056] Reference Figure 5 and Figure 6As shown in some embodiments of the utility model, the keyboard comprises a keyboard rotating shaft of the first aspect, and further comprises a bottom plate 800 and a folding plate 700, one of the bottom plate 800 and the folding plate 700 is connected with the mandrel 100, and the other is connected with the shaft sleeve 300; when the shaft sleeve 300 is in the first state, the bottom plate 800 and the folding plate 700 are folded; when the shaft sleeve 300 is in the second state, an angle is formed between the folding plate 700 and the bottom plate 800. It can be understood that when the protrusion 210 is inserted into the first groove 311, the shaft sleeve 300 is in the first state, at this time, the bottom plate 800 and the folding plate 700 are folded, the shaft sleeve 300 is driven to rotate forward, so that the protrusion 210 slides along the groove bottom of the first groove 311, at this time, the force required by the user to drive the folding plate 700 away from the bottom plate 800 is relatively small, the protrusion 210 is continuously driven to be separated from the first groove 311 and falls into the second groove 312, at this time, the shaft sleeve 300 is in the second state, the bottom plate 800 forms an angle relative to the folding plate 700, and when the user needs to fold the folding plate 700 with the bottom plate 800, the elastic element 400 needs to overcome the elastic force provided by the locking piece 200 to separate from the second groove 312 and the friction force between the locking piece 200 and the shaft sleeve 300, at this time, the force required by the user to drive the folding plate 700 to be close to the bottom plate 800 is relatively large.

[0057] As shown in some embodiments of the utility model, Figure 3 and Figure 6 As shown in some embodiments of the utility model, the mounting hole 701 is arranged on the folding plate 700, the shaft sleeve 300 is slidably arranged in the mounting hole 701, the outer circumferential surface of the shaft sleeve 300 is provided with a plurality of friction strips 340, the friction strips 340 are distributed along the circumferential direction of the shaft sleeve 300, the extension direction of the friction strips 340 is parallel to the axis direction of the mounting hole 701 and the shaft sleeve 300, and the friction strips 340 abut the hole wall of the mounting hole 701. It can be understood that since the friction strips 340 are distributed along the circumferential direction of the shaft sleeve 300, and the extension direction of the friction strips 340 is parallel to the axis direction of the mounting hole 701 and the shaft sleeve 300, when the user inserts the shaft sleeve 300 into the folding plate 700 along the mounting hole 701, and when an external force is applied on the folding plate 700, the friction strips 340 can increase the friction force between the folding plate 700 and the shaft sleeve 300, so as to hinder the rotation of the folding plate 700 relative to the shaft sleeve 300; the arrangement of the friction strips 340 on the shaft sleeve 300 facilitates the mounting and dismounting between the shaft sleeve 300 and the folding plate 700, and can normally hinder the relative rotation between the folding plate 700 and the shaft sleeve 300.

[0058] In some embodiments of the utility model, the mandrel 100 is provided with a mounting portion, the connection form between the mounting portion and the bottom plate 800 refers to the connection form between the shaft sleeve 300 and the folding plate 700, for example, the outer circumferential surface of the mounting portion is also provided with a plurality of friction strips 340, the friction strips 340 are distributed along the circumferential direction of the mandrel 100, the extension direction of the friction strips 340 is parallel to the axial direction of the mandrel 100, and the mounting portion of the mandrel 100 is slidably arranged in the bottom plate 800 along the axial direction of the mandrel 100.

[0059] As shown in Figure 6 In one embodiment, the keyboard comprises two keyboard rotating shafts distributed along the first direction, and the axial lines of the two keyboard rotating shafts both extend along the first direction.

[0060] It can be understood that the folding plate 700 and the bottom plate 800 are connected through the two keyboard rotating shafts, so that the connection between the folding plate 700 and the bottom plate 800 is more stable and reliable, and the relative rotation process between the folding plate 700 and the bottom plate 800 is more stable.

[0061] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A keyboard hinge, characterized in that, include: mandrel (100); A locking element (200) is slidably sleeved on the spindle (100), and the locking element (200) is provided with a protrusion (210); A bushing (300) is rotatably fitted onto the mandrel (100). The bushing (300) has an abutment surface (310) for abutting against the protrusion (210). The abutment surface (310) has a first groove (311) and a second groove (312). The first groove (311) and the second groove (312) are spaced apart along the circumference of the mandrel (100). The first groove (311) is an elongated strip extending along the circumference of the mandrel (100) and allows the protrusion (210) to abut against the first groove (311). The sleeve (300) slides circumferentially around the mandrel (100) within a groove (311), and the second groove (312) is adapted to the protrusion (210). Under the action of external force, the sleeve (300) can rotate around the mandrel (100) to switch between a first state and a second state. When the sleeve (300) is in the first state, the protrusion (210) is inserted into the first groove (311), and when the sleeve (300) is in the second state, the protrusion (210) is inserted into the second groove (312). An elastic element (400) is disposed on the side of the locking member (200) away from the bushing (300). The elastic element (400) is connected to the locking member (200) and the spindle (100) respectively, and is used to provide an elastic force to keep the protrusion (210) abutting against the abutment surface (310).

2. A keyboard hinge according to claim 1, characterized in that, It also includes a torsion spring (500), which is connected to the spindle (100) and the bushing (300) respectively, and is used to provide a spring force to rotate the protrusion (210) along the abutment surface (310) from the first groove (311) to the second groove (312).

3. A keyboard hinge according to claim 2, characterized in that, One end of the torsion spring (500) is detachably connected to the spindle (100), and the other end of the torsion spring (500) is detachably connected to the bushing (300).

4. A keyboard hinge according to claim 1, characterized in that, The spindle (100) is provided with a first abutting structure (111) and a second abutting structure (112), and the bushing (300) is provided with a first limiting structure (320) and a second limiting structure (330). When the keyboard hinge is in the first state, the first limiting structure (320) and the first abutting structure (111) abut against each other. When the keyboard hinge is in the second state, the second limiting structure (330) abuts against the second abutting structure (112).

5. A keyboard hinge according to claim 4, characterized in that, The bushing (300) has a through hole (301) and the mandrel (100) passes through the through hole (301). The through hole (301) has two limiting protrusions on its wall. The two limiting protrusions are distributed at intervals along the circumference of the mandrel (100) and the two limiting protrusions respectively form the first limiting structure (320) and the second limiting structure (330). The mandrel (100) has an abutting protrusion (110) extending radially. Along the circumference of the mandrel (100), the two opposite end faces of the abutting protrusion (110) respectively form the first abutting structure (111) and the second abutting structure (112).

6. A keyboard hinge according to claim 1, characterized in that, The bushing (300) has a receiving groove (302) on the side near the locking member (200), the bottom of the receiving groove (302) forms the abutment surface (310), and the locking member (200) is at least partially accommodated in the receiving groove (302).

7. A keyboard hinge according to claim 1, characterized in that, The spindle (100) is also provided with a limiting nut (600), which is threaded to the spindle (100) and located on the side of the locking member (200) away from the bushing (300). The elastic element (400) is disposed between the limiting nut (600) and the locking member (200), with one end of the elastic element (400) abutting against the locking member (200) and the other end of the elastic element (400) abutting against the limiting nut (600).

8. A keyboard hinge according to claim 1, characterized in that, It also includes a sound-absorbing plate (900), which engages with the locking member (200). The sound-absorbing plate (900) is slidably sleeved on the spindle (100) and abuts against the elastic element (400).

9. A keyboard, characterized in that, The keyboard includes a keyboard hinge as described in any one of claims 1 to 8, the keyboard further including a base plate (800) and a folding plate (700), one of the base plate (800) and the folding plate (700) being connected to the spindle (100), and the other being connected to the bushing (300). When the bushing (300) is in the first state, the base plate (800) and the folding plate (700) are folded together. When the bushing (300) is in the second state, a certain angle is formed between the folding plate (700) and the base plate (800).

10. A keyboard according to claim 9, characterized in that, The folding plate (700) is provided with a mounting hole (701), and the bushing (300) is slidably inserted into the mounting hole (701). The outer circumferential surface of the bushing (300) is provided with a plurality of friction strips (340). The friction strips (340) are distributed at intervals along the circumference of the bushing (300). The extending direction of the friction strips (340) is parallel to the axial direction of the bushing (300) in the mounting hole (701). The friction strips (340) abut against the hole wall of the mounting hole (701).

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