CN214896367U - Connecting device of keyboard - Google Patents

Abstract

The utility model discloses a connecting device of a keyboard, which is characterized by comprising an upper bracket, a first lower bracket, a second lower bracket, a first damping component and a second damping component; one end of the upper bracket is rotatably connected with the first lower bracket through a first damping assembly; the other end of the upper bracket is rotatably connected with the second lower bracket through a second damping assembly. The utility model discloses the design of lower carriage components of a whole that can function independently, damping subassembly can be installed from inside to outside, and to the required precision of product part and subassembly some low relatively, increase the yield of product production, reduce bad loss, reduce cost.

Description

Connecting device of keyboard

Technical Field

The utility model relates to a pivot field of keyboard especially relates to a connecting device of keyboard.

Background

The lower support of the common notebook computer keyboard rotating shaft is integrally designed, the damping assemblies of the rotating shaft can only be inserted into the openings at the two ends of the lower support for one-time installation when the damping assemblies are installed, the precision requirements on parts and assemblies of products are high, the two ends of the damping assemblies are also fixed by end covers, the number of parts is large, in addition, the poor loss is also improved due to the high precision requirements, and the production cost is increased.

Therefore, in combination with the above-mentioned technical problems, there is a need to provide a new technical solution.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists among the prior art, the utility model discloses a lower carriage components of a whole that can function independently design can make the technique of damping subassembly outside installation from the lining, the utility model provides a connecting device of keyboard, concrete technical scheme is as follows:

a connecting device of a keyboard comprises an upper support, a first lower support, a second lower support, a first damping component and a second damping component;

one end of the upper bracket is rotatably connected with the first lower bracket through a first damping assembly;

the other end of the upper bracket is rotatably connected with the second lower bracket through a second damping assembly.

Furthermore, the upper bracket is provided with an upper bracket shaft lever, and two ends of the upper bracket shaft lever are respectively provided with an accommodating groove;

the first lower support is provided with a first lower support shaft lever, and one end of the first lower support shaft lever is provided with a hole opening groove;

the second lower support is provided with a second lower support shaft rod, one end of the second lower support shaft rod is provided with a damping groove, and the bottom of the damping groove is provided with a limiting hole.

Further, the first damping assembly comprises a first mandrel, a first concave wheel, a first cam, a first sound insulation gasket, a plurality of first elastic sheets, a gasket and a fixing nut, wherein the first concave wheel, the first cam, the first sound insulation gasket, the plurality of first elastic sheets, the gasket and the fixing nut are sequentially sleeved on the first mandrel in a penetrating mode;

the second damping assembly comprises a second mandrel, and a second concave wheel, a second cam, a second sound-insulation gasket, a plurality of second elastic pieces, a locking nut and a torsion spring which are sequentially sleeved on the second mandrel in a penetrating manner, wherein the locking nut is screwed and fixed on the second mandrel, and the torsion spring positioned on the outer side of the locking nut is clamped and sleeved on the second mandrel.

Further, the first mandrel comprises a buckle section, a bulge section, a round rod section and a penetrating section which are sequentially and integrally connected, the buckle section is fixed in the accommodating groove of the upper support shaft lever, a plurality of bulges are annularly distributed on the outer surface of the bulge section, the round rod section is a smooth round rod, the penetrating section is a non-round rod, and an external thread matched with the internal thread of the fixing nut is arranged at one end, far away from the round rod section, of the penetrating section;

the first concave wheel is sleeved on the round rod section of the first mandrel in a penetrating mode, a through round hole is formed in the first concave wheel in the axial lead direction, a plurality of convex blocks are arranged on the end face of one end of the first concave wheel and limited between adjacent bulges of the first mandrel, and the end face of the other end of the first concave wheel is a wavy surface which is formed by convex-concave alternating along the circumferential direction of the first concave wheel;

the first cam is sleeved on the sleeve penetrating section of the first mandrel in a clamping mode, a through hole matched with the sleeve penetrating section of the first mandrel is formed in the first cam along the axial lead direction, and a curved surface matched with the wavy surface of the first concave wheel is arranged at one end of the first cam.

Further, the second mandrel comprises a connecting section, a limiting section, a polished rod section and a fixing section which are sequentially and integrally connected, the connecting section is fixed in a containing groove of the upper support shaft lever, a plurality of stop blocks are annularly distributed on the outer surface of the limiting section, the polished rod section is a cylindrical polished rod, the fixing section is a non-circular rod, and an external thread matched with the internal thread of the locking nut is arranged on the outer surface of one end, away from the polished rod section (5013), of the fixing section;

the second concave wheel is sleeved on the polished rod section of the second mandrel in a penetrating manner, a through hole is formed in the second concave wheel along the axial lead direction, a plurality of flanges are arranged on the end face of one end of the second concave wheel and limited between adjacent stop blocks of the second mandrel, and the end face of a ring of the end face of the other end of the second concave wheel is a convex-concave surface which is convex-concave alternately along the circumference of the second concave wheel;

the second cam is clamped and sleeved on the fixed section of the second mandrel, a sleeve hole matched with the clamping sleeve of the fixed section of the second mandrel is formed in the second cam along the axial lead direction, and a contact surface matched with the convex-concave surface of the second concave wheel is arranged at one end of the second cam;

the torsion spring comprises a bending section and a straightening section fixedly connected with one end of the bending section, and the straightening section is inserted into a limiting hole in the damping groove.

Furthermore, one end of the first damping assembly is fixed in the accommodating groove at one end of the upper bracket shaft rod through a buckle section of the first mandrel, and the other end of the first damping assembly is fixed in the hole groove of the first lower bracket shaft rod through a first concave wheel of the first damping assembly;

one end of the second damping assembly is fixed in the accommodating groove at the other end of the upper support shaft lever through a connecting section of a second mandrel, and the other end of the second damping assembly is fixed in the damping groove of the second lower support shaft lever through a second concave wheel of the second damping assembly;

fixing a first lower support immovably, synchronously fixing a first concave wheel fixedly connected with the first lower support immovably, pushing and pulling an upper support, clamping and sleeving a first mandrel of the upper support to synchronously rotate, and clamping and sleeving a first cam curved surface of the first mandrel to rotate along the wave surface damping of the first concave wheel;

and the second lower support is fixed, a second concave wheel fixedly connected with the second lower support is synchronously fixed, the upper support is pushed and pulled, the torsion spring is synchronously twisted, the sleeve is synchronously rotated on a second mandrel of the upper support, and the sleeve is damped and rotated on a second cam contact surface of the second mandrel along the convex and concave surfaces of the second concave wheel.

Preferably, the inner walls of the accommodating grooves of the upper bracket shaft lever are provided with accommodating groove convex edges at equal intervals, and the length direction of the accommodating groove convex edges is consistent with the axial lead direction of the upper bracket shaft lever;

a plurality of strip tooth grooves matched with the convex ribs of the accommodating groove are distributed on the outer surface of the buckling section of the first mandrel at equal intervals, and the length direction of the strip tooth grooves is consistent with the axial lead direction of the first mandrel;

the outer surface of the second mandrel connecting section is equidistantly distributed with a plurality of strip grooves matched with the convex edges of the accommodating groove, the length direction of the strip grooves is consistent with the axial lead direction of the second mandrel, the first mandrel buckling section is buckled in the accommodating groove at one end of the upper bracket shaft rod, and the second mandrel connecting section is buckled in the accommodating groove at the other end of the upper bracket shaft rod.

Preferably, the inner wall of the perforated groove of the first lower support shaft lever is provided with perforated groove convex ribs which are annularly arranged, and the length direction of the perforated groove convex ribs is consistent with the axial lead direction of the upper support shaft lever;

the outer surface of a first concave wheel of the first damping component is uniformly provided with a plurality of racks in an annular mode along the axial lead direction, the racks are matched and clamped with the convex edges of the hole grooves, and the first concave wheel of the first damping component is buckled in the hole grooves of the shaft rod of the first lower support.

Preferably, the inner wall of the damping groove of the second lower support shaft is provided with damping groove convex ribs which are annularly arranged, and the length direction of the damping groove convex ribs is consistent with the axial lead direction of the upper support shaft rod;

and a plurality of raised strips are uniformly arranged on the outer surface of a second concave wheel of the second damping component in an annular mode along the axis direction, the raised strips are matched and clamped with the raised edges of the damping grooves, and the second concave wheel of the second damping component is clamped in the damping grooves of the second lower support shaft.

Preferably, the upper support shaft lever is an aluminum alloy shaft lever, the first mandrel and the second mandrel are both steel mandrels, the first mandrel clamping section is pressed into the accommodating groove at one end of the upper support shaft lever, and the second mandrel connecting section is pressed into the accommodating groove at the other end of the upper support shaft lever.

Preferably, the first lower support shaft rod is an aluminum alloy shaft rod, the first concave wheel of the first damping assembly is a steel concave wheel, and the first concave wheel of the first damping assembly is pressed into the accommodating groove at one end of the upper support shaft rod.

Preferably, the second lower support shaft rod is an aluminum alloy shaft rod, the second concave wheel of the second damping assembly is a steel concave wheel, and the second concave wheel of the second damping assembly is pressed into the accommodating groove at the other end of the upper support shaft rod.

Further preferably, the upper bracket shaft receiving groove is a non-circular groove, the outer surface of the first mandrel clamping section is matched with the non-circular receiving groove, the outer surface of the second mandrel connecting section is matched with the non-circular receiving groove, the first mandrel clamping section is clamped into the receiving groove at one end of the upper bracket shaft, and the bayonet of the second mandrel connecting section is clamped into the receiving groove at the other end of the upper bracket shaft.

Further preferably, the first lower support shaft rod opening groove is a non-circular groove, the outer surface of the first concave wheel of the first damping component is matched with the non-circular opening groove, and the first concave wheel of the first damping component is buckled in the opening groove of the first lower support shaft rod.

Further preferably, the second lower support shaft damping groove is a non-circular groove, the outer surface of a second concave wheel of the second damping assembly is matched with the non-circular damping groove, and the second concave wheel of the second damping assembly is buckled in the damping groove of the second lower support shaft.

The utility model discloses a connecting device of keyboard has following beneficial effect:

(1) the utility model discloses a connecting device of keyboard, its first lower carriage with the design of second lower carriage components of a whole that can function independently makes first damping subassembly and second damping subassembly can be installed from inside to outside, and the precision requirement to product part and subassembly is some less relatively, increases the yield of product production, reduces bad loss;

(2) the lower bracket of the connecting device of the keyboard of the utility model adopts a split design, thereby reducing the processing difficulty and saving the cost by more than 50 percent;

(3) the utility model discloses a connecting device of keyboard, its lower carriage adopts the components of a whole that can function independently design, first lower carriage with the second lower carriage only need set up the fluting can, need not set up the trompil that link up, has also left out the end cover design of trompil end, has reduced 3 part designs such as damping subassembly end cover, can reduce 5% cost.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a connecting device of a keyboard according to the present invention;

fig. 2 is a schematic structural diagram of a connecting device of a keyboard according to the present invention;

fig. 3 is a schematic structural diagram of a first damping assembly according to the present invention;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a schematic structural diagram of a second damping assembly according to the present invention;

fig. 6 is an exploded view of fig. 5.

Wherein, 1-upper bracket, 2-first lower bracket, 3-second lower bracket, 4-first damping component, 5-second damping component, 401-first mandrel, 4011-buckle section, 4012-convex section, 4013-round bar section, 4014-sleeve section, 402-first concave wheel, 4021-convex block, 4022-rack, 4023-wave surface, 403-first cam, 4031-curved surface, 404-first sound-insulation gasket, 405-first elastic sheet, 406-gasket, 407-fixing nut, 501-second mandrel, 5011-connecting section, 5012-limiting section, 5013-polished bar section, 5014-fixing section, 502-second concave wheel, 5021-flange, 5022-convex bar, 5023-convex concave surface, 503-second cam, 5031-contact surface, 504-second sound-proof gasket, 505-second elastic sheet, 506-locking nut, 507-torsion spring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "large", "small", "front", "rear", "both ends", "one end", "the other end", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "disposed," "connected," "disposed," "sleeved," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1 and 2, fig. 1 is an exploded schematic view of a connecting device of a keyboard according to the present invention, and fig. 2 is a schematic view of a connecting device of a keyboard according to the present invention. As shown in fig. 1 and 2, a connecting device of a keyboard includes an upper bracket 1, a first lower bracket 2, a second lower bracket 3, a first damping member 4 and a second damping member 5;

one end of the upper bracket 1 is rotatably connected with the first lower bracket 2 through a first damping component 4;

the other end of the upper bracket 1 is rotatably connected with the second lower bracket 3 through a second damping component 5.

In an example, the upper bracket 1 comprises an upper sheet and an upper bracket shaft lever, the upper sheet is fixedly connected with the upper bracket shaft lever, two ends of the upper bracket shaft lever are respectively provided with an accommodating groove, and the surface of the upper sheet is provided with a plurality of fixing holes;

the first lower support 2 comprises a first lower blade and a first lower support shaft lever, the first lower blade is fixedly connected with the first lower support shaft lever, one end of the first lower support shaft lever is provided with a hole opening groove, and the surface of the first lower blade is provided with a plurality of fixing holes;

the second lower support 3 comprises a second lower blade and a second lower support shaft lever, the second lower blade is fixedly connected with the second lower support shaft lever, one end of the second lower support shaft lever is provided with a damping groove, the bottom of the damping groove is provided with a limiting hole, and the surface of the second lower blade is provided with a plurality of fixing holes;

the axial lead of the upper bracket shaft lever, the axial lead of the first lower bracket shaft lever and the axial lead of the second lower bracket shaft lever are all on the same horizontal line; the outer diameter sizes of the upper bracket shaft lever, the first lower bracket shaft lever and the second lower bracket shaft lever are all consistent.

In an example, the first lower support 2 and the second lower support 3 are respectively fixedly connected with a keyboard, and the upper support 1 is connected with a screen.

The first lower support 2 and the second lower support 3 are designed in a split mode, so that the first damping component 4 and the second damping component 5 can be installed from inside to outside, the precision requirement on product parts and components is relatively low, the yield of product production is increased, the first lower support 2 and the second lower support 3 only need to be provided with grooves, through holes do not need to be formed, and the design of end covers of hole opening ends is omitted.

Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of a first damping assembly according to the present invention;

fig. 4 is an exploded view of fig. 3. As shown in fig. 3 and 4, the first damping assembly 4 includes a first mandrel 401, a first concave wheel 402, a first cam 403, a first sound-insulating spacer 404, a plurality of first elastic sheets 405, a spacer 406, and a fixing nut 407, which are sequentially sleeved on one end of the first mandrel, and the fixing nut 407 is screwed on and fixed to the first mandrel 401.

The first mandrel 401 comprises a buckle section 4011, a convex section 4012, a round bar section 4013 and a sleeve penetrating section 4014 which are integrally connected in sequence, the buckle section 4011 is fixed in a containing groove of an upper support shaft rod, a plurality of protrusions are annularly distributed on the outer surface of the convex section 4012 at equal intervals, the round bar section 4013 is a smooth round bar, the sleeve penetrating section 4014 is a non-round bar, and an external thread matched with an internal thread of a fixing nut is arranged at one end, far away from the round bar section, of the sleeve penetrating section 4014;

the first concave wheel 402 is sleeved on a round rod segment 4013 of the first mandrel in a penetrating mode, a through round hole is formed in the first concave wheel 402 along the axial lead direction, a plurality of convex blocks 4021 are annularly and equidistantly arranged on the end face of one end of the first concave wheel 402, the convex blocks 4021 are limited between adjacent bulges of the first mandrel, and the end face of the other end of the first concave wheel 402 is a wavy surface 4023 which is formed by convex-concave alternating along the circumferential direction of the first concave wheel;

the first cam 403 is clamped in a sleeve penetrating section 4014 of the first mandrel, a through hole matched with the sleeve penetrating section of the first mandrel is formed in the first cam 403 along the axial lead direction, and a curved surface 4031 matched with a wave surface of the first concave wheel is arranged at one end of the first cam 403.

A plurality of notches for eliminating strain deformation are formed in the edge of the first sound-insulating gasket 404, and the notches are uniformly distributed in an annular shape;

one end of the first damping component 4 is fixed in the containing groove at one end of the upper bracket shaft rod through a buckle section of the first mandrel, and the other end of the first damping component 4 is fixed in the perforated groove of the first lower bracket shaft rod through a first concave wheel 402 of the first damping component;

the first lower support 2 is fixed, the first concave wheel 402 fixedly connected with the first lower support 2 is synchronously fixed, the upper support is pushed and pulled, the first mandrel 401 sleeved on the upper support rotates synchronously, and the first cam curved surface 4031 sleeved on the first mandrel rotates along the wave surface 4023 of the first concave wheel in a damping mode.

With reference to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of a second damping assembly according to the present invention, and fig. 6 is an exploded structural diagram of fig. 5. As shown in fig. 5 and 6, the second damping assembly 5 includes a second mandrel 501, a second concave wheel 502, a second cam 503, a second sound-proof gasket 504, a second elastic sheet set 505, a locking nut 506 and a torsion spring 507, which are sequentially sleeved on the second mandrel, the locking nut 506 is screwed on the second mandrel 501, and the torsion spring 507 located outside the locking nut 506 is sleeved on the second mandrel 501.

The second mandrel 501 comprises a connecting section 5011, a limiting section 5012, a polished rod section 5013 and a fixing section 5014 which are integrally connected in sequence, wherein the connecting section 5011 is fixed in a containing groove of an upper bracket shaft lever, a plurality of stoppers are annularly distributed on the outer surface of the limiting section 5012 at equal intervals, the polished rod section 5013 is a cylindrical polished rod, the fixing section 5014 is a non-circular rod, and an outer surface of one end, far away from the polished rod section (5013), of the fixing section 5014 is provided with an external thread matched with the internal thread of the locking nut;

the second concave wheel 502 is sleeved on the polished rod segment 5013 of the second mandrel in a penetrating manner, a through hole is formed in the second concave wheel 502 along the axial lead direction, a plurality of flanges 5021 are annularly arranged on the end face of one end of the second concave wheel 502 at equal intervals, the plurality of flanges 5021 are limited between adjacent stops of the second mandrel, and convex-concave surfaces 5023 which are alternately convex and concave along the circumferential direction of the second concave wheel are arranged on the end face of the other end of the second concave wheel 502;

the second cam 503 is clamped and sleeved on the fixed section 5014 of the second mandrel, the second cam 503 is provided with a sleeve hole matched with the fixed section of the second mandrel in a clamping sleeve along the axial lead direction, and one end of the second cam 503 is provided with a contact surface 5031 matched with the convex and concave surfaces of the second concave wheel;

the edge of the second sound-insulating gasket 504 is provided with a plurality of notches for eliminating strain deformation, and the notches are uniformly distributed in an annular shape;

the torsion spring 507 comprises a bending section and a straightening section connected with one end of the bending section, a hole penetrates through the bending section along the stretching direction, a connecting ring clamped with a second mandrel is arranged on one side of the bending section, which is far away from the straightening section, the connecting ring is fixedly connected with the bending section, and the straightening section is inserted into a limiting hole in the damping groove.

One end of the second damping component 5 is fixed in the accommodating groove at the other end of the upper bracket shaft lever through a connecting section of a second mandrel, and the other end of the second damping component 5 is fixed in the damping groove of the second lower bracket shaft lever through a second concave wheel 502 of the second damping component;

the second lower bracket 3 is fixed, the second concave wheel 502 fixedly connected with the second lower bracket 3 is synchronously fixed and fixed, the upper bracket is pushed and pulled, the torsion spring 507 is synchronously twisted, the second mandrel 501 sleeved on the upper bracket synchronously rotates, and the second cam contact surface 5031 sleeved on the second mandrel rotates along the convex-concave surface 5023 of the second concave wheel in a damping manner.

Preferably, the inner walls of the accommodating grooves of the upper support shaft lever are provided with accommodating groove convex edges at equal intervals, and the length direction of the accommodating groove convex edges is consistent with the axial lead direction of the upper support shaft lever;

a plurality of strip tooth grooves matched with the convex ribs of the accommodating groove are distributed on the outer surface of the first mandrel buckling section 4011 at equal intervals, the length direction of the strip tooth grooves is consistent with the axial lead direction of the first mandrel, and the first mandrel buckling section 4011 is buckled in the accommodating groove at one end of the upper support shaft rod;

the outer surface of the second mandrel connecting section 5011 is equidistantly distributed with a plurality of strip grooves matched with the grooves and the ribs, the length direction of the strip grooves is consistent with the axial lead direction of the second mandrel, and the second mandrel connecting section 5011 is buckled in the grooves at the other end of the upper support shaft lever.

Preferably, the inner wall of the perforated groove of the first lower support shaft lever is provided with perforated groove convex ribs which are annularly arranged, and the length direction of the perforated groove convex ribs is consistent with the axial lead direction of the upper support shaft lever;

the outer surface of the first concave wheel 402 of the first damping assembly is uniformly provided with a plurality of racks 4022 in an annular shape along the axial lead direction, the racks 4022 are matched and clamped with the convex ribs of the perforated groove, and the first concave wheel 402 of the first damping assembly is clamped in the perforated groove of the shaft lever of the first lower support.

Preferably, the inner wall of the damping groove of the second lower support shaft is provided with damping groove convex ribs which are annularly arranged, and the length direction of the damping groove convex ribs is consistent with the axial lead direction of the upper support shaft rod;

the outer surface of the second concave wheel 502 of the second damping assembly is uniformly provided with a plurality of convex strips 5022 in a ring shape along the axis direction, the convex strips 5022 are matched and clamped with convex edges of the damping grooves, and the second concave wheel 502 of the second damping assembly is clamped in the damping grooves of the second lower support shaft.

Preferably, the upper bracket shaft lever is an aluminum alloy shaft lever, the first mandrel 401 and the second mandrel 501 are steel mandrels, the first mandrel clamping section 4011 is pressed into the accommodating groove at one end of the upper bracket shaft lever, and the second mandrel connecting section 5011 is pressed into the accommodating groove at the other end of the upper bracket shaft lever.

Preferably, the first lower support shaft rod is an aluminum alloy shaft rod, the first concave wheel 402 of the first damping assembly is a steel concave wheel, and the first concave wheel 402 of the first damping assembly is pressed into the accommodating groove at one end of the upper support shaft rod.

Preferably, the second lower support shaft rod is an aluminum alloy shaft rod, the second concave wheel 502 of the second damping assembly is a steel concave wheel, and the second concave wheel 502 of the second damping assembly is pressed into the accommodating groove at the other end of the upper support shaft rod.

Preferably, the upper bracket shaft receiving groove is a non-circular groove, the outer surface of the first mandrel buckling section 4011 is matched with the non-circular receiving groove, the outer surface of the second mandrel connecting section 5011 is matched with the non-circular receiving groove, the first mandrel buckling section 4011 is buckled into the receiving groove at one end of the upper bracket shaft, and the bayonet of the second mandrel connecting section 5011 is buckled into the receiving groove at the other end of the upper bracket shaft.

Preferably, the first lower bracket shaft rod opening groove is a non-circular groove, the outer surface of the first concave wheel 402 of the first damping component is matched with the non-circular opening groove, and the first concave wheel 402 of the first damping component is buckled in the opening groove of the first lower bracket shaft rod.

Preferably, the second lower support shaft damping groove is a non-circular groove, the outer surface of the second concave wheel 502 of the second damping assembly is matched with the non-circular damping groove, and the second concave wheel 502 of the second damping assembly is buckled in the damping groove of the second lower support shaft.

The non-circular shape above may be D-shaped, elliptical, polygonal, etc.

The utility model has the advantages that:

(1) the utility model discloses a connecting device of keyboard, its first lower carriage with the design of second lower carriage components of a whole that can function independently makes first damping subassembly and second damping subassembly can be installed from inside to outside, and the precision requirement to product part and subassembly is some less relatively, increases the yield of product production, reduces bad loss;

(2) the lower bracket of the connecting device of the keyboard of the utility model adopts a split design, thereby reducing the processing difficulty and saving the cost by more than 50 percent;

(3) the utility model discloses a connecting device of keyboard, its lower carriage adopts the components of a whole that can function independently design, first lower carriage with the second lower carriage only need set up the fluting can, need not set up the trompil that link up, has also left out the end cover design of trompil end, has reduced 3 part designs such as damping subassembly end cover, can reduce 5% cost.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications and changes may be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. The connecting device of the keyboard is characterized by comprising an upper bracket (1), a first lower bracket (2), a second lower bracket (3), a first damping component (4) and a second damping component (5);

one end of the upper bracket (1) is rotatably connected with the first lower bracket (2) through a first damping component (4);

the other end of the upper support (1) is rotatably connected with the second lower support (3) through a second damping component (5).

2. The connecting device of the keyboard according to claim 1, wherein the upper bracket (1) is provided with an upper bracket shaft rod, and the two ends of the upper bracket shaft rod are respectively provided with a containing groove;

the first lower support (2) is provided with a first lower support shaft lever, and one end of the first lower support shaft lever is provided with a hole opening groove;

the second lower support (3) is provided with a second lower support shaft rod, one end of the second lower support shaft rod is provided with a damping groove, and the bottom of the damping groove is provided with a limiting hole.

3. The connecting device of the keyboard according to claim 2, wherein the first damping component (4) comprises a first mandrel (401), a first concave wheel (402), a first cam (403), a first sound-insulating gasket (404), a plurality of first elastic sheets (405), a gasket (406) and a fixing nut (407), wherein the first concave wheel, the first cam (403), the first sound-insulating gasket (404), the plurality of first elastic sheets (405), the gasket (406) and the fixing nut (407) are sequentially sleeved on one end of the first mandrel, and the fixing nut (407) is screwed and fixed on the first mandrel (401);

the second damping assembly (5) comprises a second mandrel (501), a second concave wheel (502), a second cam (503), a second sound insulation gasket (504), a plurality of second elastic sheets (505), a locking nut (506) and a torsion spring (507), wherein the second concave wheel, the second cam (503), the second sound insulation gasket (504), the second elastic sheets (505), the locking nut (506) and the torsion spring (507) are sequentially sleeved on one end of the second mandrel in a penetrating mode, the locking nut (506) is screwed and fixed onto the second mandrel (501), and the torsion spring (507) located on the outer side of the locking nut (506) is clamped and sleeved on the second mandrel (501).

4. The connecting device of the keyboard according to claim 3, wherein the first mandrel (401) comprises a buckle section (4011), a convex section (4012), a round bar section (4013) and a sleeve penetrating section (4014) which are integrally connected in sequence, the buckle section (4011) is fixed in a containing groove of the upper support shaft rod, a plurality of protrusions are annularly distributed on the outer surface of the convex section (4012), the round bar section (4013) is a smooth round bar, the sleeve penetrating section (4014) is a non-round bar, and one end, away from the round bar section, of the sleeve penetrating section (4014) is provided with an external thread matched with an internal thread of a fixing nut;

the first concave wheel (402) is sleeved on a round rod section (4013) of the first mandrel in a penetrating mode, a through round hole is formed in the first concave wheel (402) along the axial lead direction, a plurality of convex blocks (4021) are arranged on the end face of one end of the first concave wheel (402), the convex blocks (4021) are limited between adjacent bulges of the first mandrel, and the end face of the other end of the first concave wheel (402) is a wavy surface (4023) which is formed by convex-concave alternating along the circumferential direction of the first concave wheel;

first cam (403) cutting ferrule in the cover section (4014) of wearing of first dabber, first cam (403) are equipped with the through-hole of wearing the cover section phase-match cutting ferrule with first dabber along the axial lead direction, the one end of first cam (403) is provided with curved surface (4031) with first concave wheel wave surface assorted.

5. The connecting device of the keyboard according to claim 4, wherein the second mandrel (501) comprises a connecting section (5011), a limiting section (5012), a polished rod section (5013) and a fixing section (5014) which are integrally connected in sequence, the connecting section (5011) is fixed in the accommodating groove of the upper bracket shaft lever, a plurality of stoppers are annularly distributed on the outer surface of the limiting section (5012), the polished rod section (5013) is a cylindrical polished rod, the fixing section (5014) is a non-circular rod, and the outer surface of one end of the fixing section (5014) far away from the polished rod section (5013) is provided with an external thread matched with the internal thread of the locking nut;

the second concave wheel (502) penetrates through a polished rod section (5013) of the second mandrel, a through hole is formed in the second concave wheel (502) along the axial lead direction, a plurality of flanges (5021) are arranged on the end face of one end of the second concave wheel (502), the plurality of flanges (5021) are limited between adjacent stops of the second mandrel, and convex-concave surfaces (5023) which are in convex-concave alternation along the circumference of the second concave wheel are arranged on the end face of the other end of the second concave wheel (502);

the second cam (503) is clamped and sleeved on a fixed section (5014) of the second mandrel, a sleeve hole matched with the fixed section of the second mandrel in a clamping sleeve is formed in the second cam (503) along the axial lead direction, and a contact surface (5031) matched with the convex-concave surface of the second concave wheel is arranged at one end of the second cam (503);

the torsion spring (507) comprises a bending section and a straightening section fixedly connected with one end of the bending section, and the straightening section is inserted into a limiting hole in the damping groove.

6. The connecting device of the keyboard of claim 5, wherein one end of the first damping component (4) is fixed in the containing groove of one end of the upper bracket shaft rod through the buckling section of the first mandrel, and the other end of the first damping component (4) is fixed in the opening groove of the first lower bracket shaft rod through the first damping component first concave wheel (402);

one end of the second damping component (5) is fixed in the accommodating groove at the other end of the upper support shaft lever through the connecting section of the second mandrel, and the other end of the second damping component (5) is fixed in the damping groove of the second lower support shaft lever through a second concave wheel (502) of the second damping component;

fixing a first lower support (2) immovably, synchronously fixing a first concave wheel (402) fixedly connected with the first lower support (2) immovably, pushing and pulling an upper support, sleeving a first mandrel (401) of the upper support in a sleeving manner to synchronously rotate, and sleeving a first cam curved surface (4031) of the first mandrel to rotate along a first concave wheel wavy surface (4023) in a damping manner;

the second lower support (3) is fixed and fixed, a second concave wheel (502) fixedly connected with the second lower support (3) is fixed and fixed synchronously, the upper support is pushed and pulled, the torsion spring (507) is twisted synchronously, the second mandrel (501) sleeved on the upper support rotates synchronously, and the second cam contact surface (5031) sleeved on the second mandrel rotates along the convex-concave surface (5023) of the second concave wheel in a damping mode.

7. The connecting device of claim 6, wherein the inner walls of the receiving grooves of the upper supporting shaft are provided with receiving groove ribs at equal intervals, and the length direction of the receiving groove ribs is consistent with the axial line direction of the upper supporting shaft;

a plurality of strip tooth grooves matched with the convex ribs of the accommodating groove are distributed on the outer surface of the first mandrel buckling section (4011) at equal intervals, and the length direction of the strip tooth grooves is consistent with the axial lead direction of the first mandrel;

the outer surface of the second mandrel connecting section (5011) is equidistantly distributed with a plurality of strip grooves matched with the containing groove ribs, the length direction of the strip grooves is consistent with the axial lead direction of the second mandrel, the first mandrel clamping section (4011) is buckled in the containing groove at one end of the upper support shaft lever, and the second mandrel connecting section (5011) is buckled in the containing groove at the other end of the upper support shaft lever.

8. The connecting device of claim 6, wherein the inner wall of the opening groove of the first lower supporting shaft is provided with opening groove ribs at equal intervals, and the length direction of the opening groove ribs is consistent with the axial line direction of the upper supporting shaft;

a plurality of racks (4022) are uniformly and annularly arranged on the outer surface of a first concave wheel (402) of the first damping assembly along the axial lead direction, the racks (4022) are matched and clamped with the convex ribs of the perforated groove, and the first concave wheel (402) of the first damping assembly is clamped in the perforated groove of the shaft rod of the first lower bracket;

damping groove convex ridges which are annularly arranged are arranged on the inner wall of the damping groove of the second lower support shaft, and the length direction of the damping groove convex ridges is consistent with the axial lead direction of the upper support shaft lever;

a plurality of convex strips (5022) are uniformly arranged on the outer surface of a second concave wheel (502) of the second damping assembly in a ring shape along the axis direction, the convex strips (5022) are matched and clamped with convex edges of the damping grooves, and the second concave wheel (502) of the second damping assembly is clamped in the damping grooves of the second lower support shaft.

9. The connecting device of the keyboard of claim 6, wherein the upper support shaft is an aluminum alloy shaft, the first mandrel (401) and the second mandrel (501) are both steel mandrels, the first mandrel clamping section (4011) is pressed into the containing groove at one end of the upper support shaft, and the second mandrel connecting section (5011) is pressed into the containing groove at the other end of the upper support shaft;

the first lower bracket shaft lever is an aluminum alloy shaft lever, the first concave wheel (402) of the first damping component is a steel concave wheel, and the first concave wheel (402) of the first damping component is pressed into the accommodating groove at one end of the upper bracket shaft lever;

the second lower support shaft rod is an aluminum alloy shaft rod, the second concave wheel (502) of the second damping assembly is a steel concave wheel, and the second concave wheel (502) of the second damping assembly is pressed into the accommodating groove at the other end of the upper support shaft rod.

10. The connecting device of the keyboard of claim 6, wherein the upper bracket shaft receiving groove is a non-circular groove, the outer surface of the first mandrel fastening section (4011) is matched with the non-circular receiving groove, the outer surface of the second mandrel connecting section (5011) is matched with the non-circular receiving groove, the first mandrel fastening section (4011) is fastened into the receiving groove at one end of the upper bracket shaft, and the second mandrel connecting section (5011) is fastened into the receiving groove at the other end of the upper bracket shaft;

the opening groove of the first lower support shaft lever is a non-circular groove, the outer surface of a first concave wheel (402) of the first damping component is matched with the non-circular opening groove, and the first concave wheel (402) of the first damping component is buckled in the opening groove of the first lower support shaft lever;

the damping groove of the second lower support shaft rod is a non-circular groove, the outer surface of a second concave wheel (502) of the second damping component is matched with the non-circular damping groove, and the second concave wheel (502) of the second damping component is buckled in the damping groove of the second lower support shaft.

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