CN210378854U - Knob structure for keyboard - Google Patents

Abstract

The utility model relates to a knob structure for keyboard, include with keyboard fixed connection's encoder circuit board and locating the knob of encoder circuit board top, the knob structure still includes: the encoder adapter is arranged between the encoder circuit board and the knob, the encoder adapter can be fixedly connected with the encoder circuit board in a rotating mode, and the knob is in clamping fit with the encoder adapter in the circumferential direction and the axial direction; and the hollow cover is arranged on a keyboard mounting panel at the periphery of the encoder adapter, the keyboard mounting panel is fixedly connected with the encoder circuit board, a first annular convex part is arranged on the lower surface of the keyboard mounting panel, a matched limiting convex part is arranged on the outer wall of the encoder adapter, and the first annular convex part is abutted to the limiting convex part. Through the arrangement, the problem that the knob of the knob structure on the keyboard of the conventional ultrasonic diagnostic equipment is easily pulled out by mistake and separated from the keyboard can be solved.

Description

Knob structure for keyboard

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a knob structure for keyboard.

Background

At present, ultrasonic examination is one of the main means for examining the state of an illness, and a knob structure is generally installed on a keyboard of an ultrasonic diagnostic device to realize auxiliary examination.

A rotatable knob is usually sleeved on the periphery of the knob structure so as to facilitate the rotation operation of a user to realize the knob function; because the rotary force and direction are not controllable when the user uses the knob, the sleeved knob is easily pulled out in the axial direction by mistake and separated from the keyboard, thereby easily causing the knob to be lost, and finally the detection function corresponding to the knob cannot be normally used.

Disclosure of Invention

An object of the utility model is to provide a knob structure for keyboard to the knob of knob structure is easily extracted by the mistake and breaks away from the problem of keyboard on solving present ultrasonic diagnosis equipment keyboard.

In order to achieve one of the above objects, an embodiment of the present invention provides a knob structure for a keyboard, including an encoder circuit board fixedly connected to the keyboard and a knob disposed above the encoder circuit board, the knob structure further including: the encoder adapter is arranged between the encoder circuit board and the knob, the encoder adapter can be fixedly connected with the encoder circuit board in a rotating mode, and the knob is in clamping fit with the encoder adapter in the circumferential direction and the axial direction; and the hollow cover is arranged on a keyboard mounting panel at the periphery of the encoder adapter, the keyboard mounting panel is fixedly connected with the encoder circuit board, a first annular convex part is arranged on the lower surface of the keyboard mounting panel, a matched limiting convex part is arranged on the outer wall of the encoder adapter, and the first annular convex part is abutted to the limiting convex part.

As a further improvement of an embodiment of the present invention, the knob and the encoder adaptor are both hollow structures, and the knob structure further includes a key sleeved on the hollow portions of the knob and the encoder adaptor; when the key moves to be in contact with the encoder adapter and keeps relatively static, the knob can be separated from the encoder adapter in a clamping fit state.

As a further improvement of an embodiment of the present invention, a clamping portion extending along a circumferential direction of the knob is disposed on an inner wall of the knob, and a rib clamping groove extending along an axial direction of the knob is further disposed on the clamping portion; a clamping groove matched with the clamping part is formed in the outer wall of the encoder adapter, and a convex rib matched with the convex rib clamping groove is further arranged in the clamping groove; the joint portion with the mutual joint cooperation in joint groove, protruding muscle draw-in groove with protruding muscle mutual joint cooperation.

As an embodiment of the utility model provides a further improvement, the top of encoder adaptor has been seted up the installation and has been dodged the groove, the groove is dodged in the installation along the axial direction of encoder adaptor extend and with joint groove intercommunication, joint portion can along the groove motion is dodged in the installation.

As an embodiment of the utility model provides a further improvement, protruding muscle is located the one end in joint groove, the other end in joint groove with the groove intercommunication is dodged in the installation, protruding muscle draw-in groove can be along first direction of rotation by the one end in joint groove towards the other end remove with protruding muscle alternate segregation.

As a further improvement of an embodiment of the present invention, the hollow portion of the keyboard installation panel forms a mounting hole, and the upper surface of the keyboard installation panel is further provided with a second annular convex portion surrounding the mounting hole.

As a further improvement of an embodiment of the present invention, an annular groove matched with the second annular convex portion is further formed on the inner wall of the knob, and the second annular convex portion is located in the annular groove.

As an embodiment of the present invention, the knob structure further includes a positioning structure for positioning the encoder circuit board and a soft rubber pad between the keys, the keys are disposed on the soft rubber pad and a gap is formed between the encoder adapters.

As a further improvement of an embodiment of the present invention, the button can move toward the encoder circuit board and press the soft rubber pad to deform; when the deformation of soft cushion surpasses a fixed size, can trigger the switch of encoder circuit board opens.

As a further improvement of an embodiment of the present invention, the size of the gap is larger than the fixed size.

Compared with the prior art, the beneficial effects of the utility model reside in that: the knob structure is provided with an encoder adapter and a keyboard installation panel, and the encoder adapter and the keyboard installation panel are both fixedly connected with the keyboard through an encoder circuit board; the encoder adaptor and the knob are mutually clamped and matched, can synchronously rotate and are mutually limited and not separable in the axial direction; the keyboard mounting panel further limits the encoder adaptor through the first annular convex part to prevent the encoder adaptor from being separated from the keyboard from the axial direction; so that finally the knob can be mounted firmly on the keyboard without falling off.

Drawings

Fig. 1 is a schematic structural diagram of a knob structure according to an embodiment of the present invention;

fig. 2 is an exploded view of the knob structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a knob according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an encoder adaptor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a keyboard mounting panel according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a knob structure according to an embodiment of the present invention;

fig. 7 is an enlarged structural view of a portion circled a in fig. 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to the detailed description of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

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 accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

For convenience in explanation, the description herein uses terms indicating relative spatial positions, such as "upper," "lower," "inner," "outer," and the like, to describe one element or feature's relationship to another element or feature as illustrated in the figures. The term spatially relative position may encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "above" other elements or features would then be oriented "below" or "above" the other elements or features. Thus, the exemplary term "below" can encompass both a spatial orientation of below and above.

The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. For convenience of description, when the knob structure is normally used, the direction toward the keyboard of the ultrasonic diagnostic device is downward, and the direction away from the keyboard of the ultrasonic diagnostic device is upward; the direction parallel to the keyboard of the ultrasonic diagnostic apparatus is a horizontal direction, and the direction perpendicular to the keyboard of the ultrasonic diagnostic apparatus is a vertical direction.

As shown in fig. 1 to 7, an embodiment of the present invention provides a knob structure for a keyboard, including with the encoder circuit board 6 of keyboard fixed connection and locate the knob 2 above the encoder circuit board 6, the knob structure further includes: the encoder adaptor 3 is arranged between the encoder circuit board 6 and the knob 2, the encoder adaptor 3 can be rotatably and fixedly connected with the encoder circuit board 6, and the knob 2 is in clamping fit with the encoder adaptor 3 in the circumferential direction and the axial direction; and the hollow keyboard installation panel 4 that is located the periphery of encoder adaptor 3, keyboard installation panel 4 with encoder circuit board 6 fixed connection and lower surface are equipped with first annular convex part 41, be equipped with the spacing convex part 341 of matching on the outer wall of encoder adaptor 3, first annular convex part 41 butt spacing convex part 341.

Specifically, an encoder circuit board 6 for supporting is arranged in the knob structure, and the encoder circuit board 6 is fixedly connected with a keyboard of the ultrasonic diagnostic equipment; an encoder adapter 3 is arranged above the encoder circuit board 6, and a knob 2 is arranged above the encoder adapter 3; the encoder adaptor 3 is fixedly connected with the encoder circuit board 6 and can rotate freely, an encoder on the encoder circuit board 6 can be regulated and controlled when the encoder adaptor 3 rotates freely, and mechanical rotation action of the encoder adaptor 3 is converted into electrical control over the encoder; knob 2 and the cooperation of the 3 joints of encoder adaptor, and both are all spacing each other on the circumferencial direction of knob 2 and axial direction, therefore, when the user rotates knob 2, 2 synchronous revolution of knob can be followed to encoder adaptor 3, knob 2 is spacing each other and can not separate in the axial with encoder adaptor 3 simultaneously, the user can conveniently use knob 2 and does not worry that uncontrollable rotation dynamics and direction of rotation cause knob 2 to break away from encoder adaptor 3, and then break away from the keyboard of encoder circuit board 6 and ultrasonic diagnostic equipment.

In addition, the knob structure further comprises a hollow keyboard installation panel 4, and the keyboard installation panel 4 is sleeved on the periphery of the encoder adapter 3; in order to limit the encoder adapter 3 and prevent the encoder adapter from moving upwards to cause separation from the encoder circuit board 6, a limit convex part 341 is arranged on the outer wall of the encoder adapter 3, a first annular convex part 41 with matched position or shape is arranged on the lower surface of the keyboard installation panel 4, and the keyboard installation panel 4 is fixedly connected with the encoder circuit board 6 through bolts and the like, so that when the encoder adapter 3 moves upwards, the first annular convex part 41 can abut against the limit convex part 341, and the encoder adapter 3 is limited by the keyboard installation panel 4 and cannot be separated.

Optionally, in order to ensure that the encoder adaptor 3 is rotatably connected to the encoder circuit board 6, the lower end of the encoder adaptor 3 may be provided with a barb structure to hook on the encoder circuit board 6, and meanwhile, the encoder adaptor can freely rotate.

Optionally, the knob 2 and the encoder adaptor 3 may also be hollow structures, and a key 1 may be further disposed in the hollow portions of the knob 2 and the encoder adaptor, so that the knob structure may integrate two functions of the key 1 and the knob 2 into a whole.

Optionally, the clamping fit form of the knob 2 and the encoder adapter 3 is not limited, and the knob 2 can be sleeved with the encoder adapter 3, or the encoder adapter 3 can be sleeved with the knob 2.

Optionally, the limiting convex portions 341 are not limited in form, and may be a plurality of convex portions symmetrically arranged on the outer wall of the encoder adaptor 3, or may be annular convex portions; meanwhile, the limiting convex part 341 may be formed by extending the outer wall of the encoder adaptor 3 as an integral molding.

Further, the knob 2 and the encoder adapter 3 are both hollow structures, and the knob structure further comprises a key 1 sleeved in the hollow parts of the knob 2 and the encoder adapter 3; when the key 1 moves to be in contact with the encoder adaptor 3 and keeps relatively static, the knob 2 can be separated from the encoder adaptor 3 in a clamping fit state.

Specifically, the knob 2 and the encoder adaptor 3 in the knob structure are both hollow structures, and a key 1 is further sleeved on the hollow parts of the knob structure and the encoder adaptor for increasing the function of the key 1 in the knob structure. Wherein, when button 1 moves under the exogenic action to contacting with encoder adaptor 3 and making encoder adaptor 3 and button 1 both keep when static relatively, knob 2 can break away from the joint cooperation state under the exogenic action to separate with encoder adaptor 3. Therefore, the knob 2 and the encoder adapter 3 can be detached in an auxiliary mode through the key 1, and therefore a user can conveniently inspect and maintain the whole knob structure at regular intervals.

Optionally, the external force action may be that the user presses the key 1 with a hand, so that the key 1 abuts against the encoder adaptor 3, and the encoder adaptor 3 obtains an acting point and can be kept still, and then the user can continue to operate the knob 2, so that the knob 2 and the encoder adaptor 3 are not clamped and matched but separated from each other.

Further, a clamping portion 21 extending along the circumferential direction of the inner wall of the knob 2 is arranged on the inner wall of the knob, and a convex rib clamping groove 211 extending along the axial direction of the clamping portion 21 is further formed in the clamping portion; a clamping groove 31 matched with the clamping portion 21 is formed in the outer wall of the encoder adapter 3, and a convex rib 311 matched with the convex rib clamping groove 211 is further formed in the clamping groove 31; the joint portion 21 and the joint groove 31 are in mutual joint fit, and the convex rib clamping groove 211 and the convex rib 311 are in mutual joint fit.

Further, the top of encoder adaptor 3 has been seted up the installation and has been dodged groove 35, the installation dodge the groove 35 along the axial direction extension of encoder adaptor 3 and with joint groove 31 intercommunication, joint portion 21 can along the installation dodges groove 35 and moves.

Further, protruding muscle 311 is located the one end of joint groove 31, the other end of joint groove 31 with groove 35 intercommunication is kept away in the installation, protruding muscle draw-in groove 211 can be along first direction of rotation by the one end of joint groove 31 move towards the other end with protruding muscle 311 alternate segregation.

As shown in fig. 3 to 4, in order to facilitate the snap-fit of the knob 2 and the encoder adaptor 3, the knob and the encoder adaptor may be configured to have a cylindrical structure with a circumferential direction and an axial direction consistent with each other. A clamping part 21 is arranged on the inner wall of the knob 2, and the clamping part 21 extends along the circumferential direction; simultaneously, then be equipped with the joint groove 31 that position and shape match on the outer wall of encoder adaptor 3, joint portion 21 and the mutual joint cooperation in joint groove 31 to it is spacing each other on axial direction with knob 2 and encoder adaptor 3, prevent both separation in axial direction.

In addition, still be equipped with protruding muscle 311 on the outer wall of encoder adaptor 3, protruding muscle 311 extends along axial direction, then still is equipped with the protruding muscle draw-in groove 211 of matching on the joint portion 21, protruding muscle 311 and the cooperation of protruding muscle draw-in groove 211 joint, with knob 2 and encoder adaptor 3 spacing each other on the circumferencial direction to encoder adaptor 3 can be synchronous rotation under the drive of knob 2.

Optionally, the number of the clamping portions 21 is not limited, and can be one or more, and the clamping portions 21 are integrally and symmetrically arranged on the inner wall of the knob 2, so that the whole mechanical balance is realized when the knob 2 drives the encoder adapter 3 to rotate.

Simultaneously, in order to detach and separate the knob 2 from the encoder adaptor 3 conveniently, the top end of the encoder adaptor 3 is also provided with an installation avoiding groove 35, and the installation avoiding groove 35 extends along the axial direction of the encoder adaptor 3 and can be a hollowed-out structure or a shallow groove structure. The lower extreme in groove 35 is kept away in the installation communicates with the other end in joint groove 31, and joint portion 21 on 2 inner walls of knob can keep away between the groove 35 round trip movement in joint groove 31 and installation to can keep away along axial direction round trip movement in groove 35 in the installation. From this, the joint portion 21 can be by the joint groove 31 motion to the installation dodge the groove 35 to dodge groove 35 upward movement in the installation to separate completely with encoder adaptor 3, knob 2 and encoder adaptor 3 no longer the joint cooperation and separate each other this moment promptly. In a similar way, the clamping portion 21 can move along the opposite route, so that the knob 2 and the encoder adapter 3 are mutually clamped and matched to assemble and mold the two.

The rib 311 is disposed at one end of the engaging groove 31, and may be disposed at the left end or the right end of the engaging groove 31. When protruding muscle 311 located the left end in joint groove 31, first direction of rotation is anticlockwise, protruding muscle draw-in groove 211 can move anticlockwise until separating with protruding muscle 311 and no longer joint each other, the right-hand member in joint groove 31 and the installation at this moment dodge groove 35 intercommunication, joint portion 21 can continue to move with protruding muscle draw-in groove 211 and dodge in groove 35 and finally separate with encoder adaptor 3 to the earlier anticlockwise rotation of knob 2 upward movement again, in order to dismantle the separation with encoder adaptor 3. Similarly, when the right-hand member in joint groove 31 was located to protruding muscle 311, first direction of rotation was clockwise, and groove 35 intercommunication is dodged with the installation to the left end in joint groove 31, and knob 2 can be earlier clockwise rotation then upward movement to dismantle the separation with encoder adaptor 3.

Further, the hollow portion of the keyboard installation panel 4 forms an installation hole 43, and the upper surface of the keyboard installation panel 4 is further provided with a second annular convex portion 42 surrounding the installation hole 43.

Further, the inner wall of the knob 2 is further provided with an annular groove 24 matched with the second annular protrusion 42, and the second annular protrusion 42 is located in the annular groove 24.

As shown in fig. 5 to 7, in order to prevent the liquid on the keyboard of the ultrasonic diagnostic apparatus from entering the internal circuit of the knob structure, a second annular convex portion 42 of a certain height may be further provided on the upper surface of the keyboard-mounting panel 4; the keyboard mounting panel 4 sleeved with the encoder adaptor 3 is hollow, the hollow part forms a mounting hole 43, and the second annular convex part 42 is arranged around the mounting hole 43 or along the edge of the mounting hole 43 to prevent liquid on the upper surface of the keyboard panel from flowing into the mounting hole 43, so that the internal circuit of the knob structure is disabled.

Meanwhile, in order to further prevent liquid or the like from falling from the upper position of the knob structure, the inner wall of the knob 2 located above the keyboard installation panel 4 may be hollowed out to be set as the annular groove 24 matching with the second annular convex portion 42, and the second annular convex portion 42 is integrally provided in the annular groove 24, so that the second annular convex portion 42 is provided inside the knob 2 in a concealed manner, and the liquid or the foreign matter or the like above can be effectively prevented from falling into the inner space of the knob structure.

Further, the knob structure further comprises a soft rubber pad 5 arranged between the encoder circuit board 6 and the key 1, and the key 1 is arranged on the soft rubber pad 5 and forms a gap 713 with the encoder adaptor 3.

Further, the key 1 can move towards the encoder circuit board 6 and press the soft rubber pad 5 to deform; when the deformation of the soft rubber pad 5 exceeds a fixed size, the switch of the encoder circuit board 6 can be triggered to be opened.

Further, the size of the gap 713 is larger than the fixed size.

Specifically, the knob structure further comprises a soft rubber pad 5 arranged below the key 1, and the soft rubber pad 5 fixed with the encoder circuit board 6 is used for supporting the key 1; after the key 1 is raised, a gap 713 can be formed between the key 1 and the encoder adapter 3, so that the key 1, the knob 2 and the encoder adapter 3 are independent from each other, and the operation and the rotation operation of the key 1 are not affected.

Meanwhile, when the key 1 moves towards the encoder circuit board 6 under the pressing action of the user, the soft rubber pad 5 is pressed by the key 1, and the soft rubber pad 5 deforms; when the deformation of soft cushion 5 exceeded a fixed dimension, can trigger the switch of encoder circuit board 6 and open, and this fixed dimension is less than the size of clearance 713, and the size of clearance 713 is greater than button 1 trigger stroke between button 1 and the encoder adaptor 3 promptly, thereby can avoid the maloperation to lead to knob 2 to break away from.

As shown in fig. 1 to 7, in the embodiment of the present invention, the knob structure includes a hollow knob 2, a hollow encoder adaptor 3, a key 1, a keyboard mounting panel 4 and an encoder circuit board 6.

The encoder circuit board 6 is fixedly connected with a keyboard of the ultrasonic diagnosis equipment and is positioned at the bottommost end of the knob structure to play a supporting role; the encoder adaptor 3 and the knob 2 are of cylinder structures with the same circumferential direction and axial direction, and the encoder adaptor 3 is rotatably connected to the encoder circuit board 6. The outer wall of the encoder adapter 3 is provided with a clamping groove 31 extending along the circumferential direction, the clamping groove 31 is provided with a convex rib 311 extending along the axial direction, and the inner wall of the knob 2 is provided with a clamping part 21 and a convex rib clamping groove 211 which are matched with each other; the clamping portion 21 and the clamping groove 31 are mutually clamped and matched, so that the rotary knob 2 and the encoder adapter 3 are mutually limited in the axial direction, and the separation of the rotary knob and the encoder adapter in the axial direction is prevented; the convex rib 311 is matched with the convex rib clamping groove 211 in a clamping mode, the rotary knob 2 and the encoder adapter 3 are limited in the circumferential direction, and therefore the encoder adapter 3 can rotate synchronously under the driving of the rotary knob 2.

The knob structure still includes hollow keyboard installation panel 4, keyboard installation panel 4 passes through forms fixed connection such as bolted connection with encoder circuit board 6, the periphery of encoder adaptor 3 is located to keyboard installation panel 4 cover, the outer wall of encoder adaptor 3 sets up spacing convex part 341, and set up the first annular convex part 41 that position or shape match at the lower surface of keyboard installation panel 4, first annular convex part 41 butt spacing convex part 341, thereby keyboard installation panel 4 is spacing with encoder adaptor 3.

The hollow part of the keyboard installation panel 4 forms a mounting hole 43, the upper surface of the hollow part is also provided with a second annular convex part 42 surrounding the mounting hole 43, the inner wall of the knob 2 is provided with a matched annular groove 24, the second annular convex part 42 is positioned in the annular groove 24, so that the second annular convex part 42 is arranged at the inner side of the knob 2 in a concealed way, and the failure caused by the liquid or impurities and the like on the surface or above the knob structure falling into an internal circuit can be effectively prevented.

The knob 2 and the encoder adaptor 3 are both of a hollow structure, the key 1 is sleeved on the hollow parts of the knob and the encoder adaptor and is arranged on the soft rubber pad 5, and the soft rubber pad 5 is fixedly connected with the encoder circuit board 6; the soft rubber pad 5 is used for supporting the key 1, and when the key 1 is pressed to enable the deformation of the soft rubber pad 5 to exceed a fixed size, a switch of the encoder circuit board 6 can be triggered to be turned on; after the key 1 is raised, a gap 713 can be formed between the key 1 and the encoder adapter 3, and the size of the gap 713 is larger than the triggering stroke of the key 1. When the key 1 moves to contact with the encoder adapter 3 and keeps relatively static, the knob 2 can be detached from the encoder adapter 3 in a clamping fit state.

The installation has been seted up on the top of encoder adaptor 3 and has been dodged groove 35, the installation dodges groove 35 along the axial direction extension of encoder adaptor 3 and communicate with the one end in joint groove 31, the other end in joint groove 31 is then located to protruding muscle 311, protruding muscle draw-in groove 211 can be along anticlockwise or clockwise motion to separating with protruding muscle 311, thereby joint portion 21 in the knob 2 can be moved to the installation by joint groove 31 and dodge groove 35, final knob 2 and 3 alternate separations of encoder adaptor.

To sum up, the utility model provides a knob structure for keyboard, encoder circuit board 6 and keyboard fixed connection, encoder adaptor 3 rotationally with encoder circuit board 6 fixed connection, knob 2 in self circumferencial direction and axial direction with encoder adaptor 3 joint cooperation, thereby knob 2 and encoder adaptor 3 are spacing each other in the axial and can not separate, spacing each other in the circumferencial direction and can synchronous revolution; keyboard installation panel 4 cup joints encoder adaptor 3, is equipped with spacing convex part 341 on the outer wall of encoder adaptor 3, and keyboard installation panel 4's lower surface is equipped with first annular convex part 41, and keyboard installation panel 4 still with encoder circuit board 6 fixed connection, first annular convex part 41 can butt spacing convex part 341 to encoder adaptor 3 is spacing by keyboard installation panel 4 and can not break away from. Therefore, the knob 2 and the encoder adapter 3 on the knob structure can be firmly fixed on the keyboard of the ultrasonic diagnostic equipment, and can not be separated from the keyboard to be lost due to the reasons of uncontrollable rotation force, rotation direction and the like of a user.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the feasible embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a knob structure for keyboard, include with keyboard fixed connection's encoder circuit board and locate the knob of encoder circuit board top, its characterized in that, the knob structure still includes:

the encoder adapter is arranged between the encoder circuit board and the knob, the encoder adapter can be fixedly connected with the encoder circuit board in a rotating mode, and the knob is in clamping fit with the encoder adapter in the circumferential direction and the axial direction;

and the hollow cover is arranged on a keyboard mounting panel at the periphery of the encoder adapter, the keyboard mounting panel is fixedly connected with the encoder circuit board, a first annular convex part is arranged on the lower surface of the keyboard mounting panel, a matched limiting convex part is arranged on the outer wall of the encoder adapter, and the first annular convex part is abutted to the limiting convex part.

2. The knob structure for a keyboard according to claim 1, wherein the knob and the encoder adaptor are both hollow structures, and the knob structure further comprises a key sleeved in the hollow portions of the knob and the encoder adaptor; when the key moves to be in contact with the encoder adapter and keeps relatively static, the knob can be separated from the encoder adapter in a clamping fit state.

3. The knob structure for a keyboard according to claim 1, wherein a clamping portion extending along a circumferential direction of the knob is provided on an inner wall of the knob, and a rib clamping groove extending along an axial direction of the knob is further provided on the clamping portion; a clamping groove matched with the clamping part is formed in the outer wall of the encoder adapter, and a convex rib matched with the convex rib clamping groove is further arranged in the clamping groove; the joint portion with the mutual joint cooperation in joint groove, protruding muscle draw-in groove with protruding muscle mutual joint cooperation.

4. The knob structure for the keyboard according to claim 3, wherein an installation avoiding groove is formed in a top end of the encoder adaptor, the installation avoiding groove extends along an axial direction of the encoder adaptor and is communicated with the clamping groove, and the clamping portion can move along the installation avoiding groove.

5. The knob structure for a keyboard according to claim 4, wherein the rib is provided at one end of the catching groove, the other end of the catching groove communicates with the mounting avoiding groove, and the rib engaging groove is movable from one end of the catching groove toward the other end in a first rotational direction to be separated from the rib.

6. The knob structure for a keyboard according to claim 1, wherein the hollow portion of the keyboard installation panel forms a mounting hole, and the upper surface of the keyboard installation panel is further provided with a second annular convex portion surrounding the mounting hole.

7. The knob structure for a keyboard according to claim 6, wherein the inner wall of the knob further defines an annular groove matching the second annular protrusion, the second annular protrusion being located in the annular groove.

8. The knob structure for a keyboard according to claim 2, further comprising a soft rubber pad disposed between the encoder circuit board and the key, wherein the key is disposed on the soft rubber pad and forms a gap with the encoder adaptor.

9. The knob structure for a keyboard according to claim 8, wherein the key is movable toward the encoder circuit board and presses the soft rubber pad to deform; when the deformation of soft cushion surpasses a fixed size, can trigger the switch of encoder circuit board opens.

10. The knob structure for a keyboard according to claim 9, wherein the gap has a size larger than the fixed size.

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