CN210109661U - Shuttle flying knob assembly structure and medical equipment - Google Patents

Abstract

The utility model discloses a fly shuttle knob subassembly structure and medical equipment, fly shuttle knob subassembly structure includes: a shuttle bracket having a middle through hole extending in a first direction; the shuttle flying knob is assembled on the shuttle flying bracket and is provided with a central hole which is coaxially arranged with the middle through hole; the key cap is connected with the key cap, and the other end of the pressing rod penetrates through the central hole along the first direction and extends to the middle through hole; and the positioning piece is assembled on the flying shuttle bracket and sleeved on the periphery of the pressing rod and used for restricting the movement direction of the pressing rod. The movement direction of the pressing piece is restrained by assembling the positioning piece on the shuttle flying support, so that the pressing piece is not easy to incline in the pressing process, and the consistency of the gap between the keycap and the shuttle flying knob is ensured; meanwhile, the rebound process of the pressing piece is smoother, the phenomenon of blocking is not easy to occur, and the pressing hand feeling of the shuttle flying knob assembly is improved.

Description

Shuttle flying knob assembly structure and medical equipment

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to shuttle knob subassembly structure and medical equipment fly.

Background

The shuttle button is used as an important input device of the monitor, can rotate, and can quickly enable a user to select a menu, press downwards and confirm the menu, so that the user experience is good. The actual control signal of the shuttle button is generated by pressing a key to trigger a sensing element assembled on the circuit board so as to trigger the circuit board to correspondingly send out the control signal.

In order to realize that the existing fly shuttle knob key assembly has the function of a key while the fly shuttle rotates, a fly shuttle cap and the key need to be manufactured on the same structural part. However, when the key in the structural member is pressed, the key can incline to cause the gap between the key and the shuttle cap to be uneven, thereby affecting the appearance; meanwhile, the key is unsmooth and unsmooth in the bouncing process, so that the hand feeling is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the button of shuttle knob among the prior art when pressing, the button can incline and cause the inhomogeneous technical problem in clearance between button and the shuttle cap to a shuttle knob subassembly structure flies is provided.

In order to solve the technical problem, the technical scheme of the utility model as follows:

according to a first aspect, an embodiment of the present invention provides a flying shuttle knob assembly structure, including:

a shuttle bracket having a middle through hole extending in a first direction;

the shuttle flying knob is assembled on the shuttle flying bracket and is provided with a central hole which is coaxially arranged with the middle through hole;

the pressing piece comprises a keycap and a pressing rod, one end of the pressing rod is connected with the keycap, and the other end of the pressing rod penetrates through the central hole along the first direction and extends to the middle through hole;

and the positioning piece is assembled on the shuttle flying bracket and sleeved on the periphery of the other end of the pressing rod and used for restricting the movement direction of the pressing rod.

Furthermore, the inner wall of the flying shuttle bracket corresponding to the middle through hole is provided with an inner clamping structure, and the positioning piece is provided with a first clamping body which is buckled with the inner clamping structure in the first direction.

Furthermore, the outer wall of the flying shuttle support corresponding to the middle through hole is provided with an outer clamping structure, and the flying shuttle knob is provided with a second clamping body which is mutually buckled with the outer clamping structure in the first direction.

Further, the shuttle support includes:

a shuttle body mounted on the circuit board;

the inner ring is connected to the shuttle flying body, extends along the first direction to form the outer wall of the middle through hole, and the inner wall of the inner ring is formed with the inner clamping structure;

the outer ring is connected to the flying shuttle body, surrounds the periphery of the inner ring, and is provided with the outer clamping structure on the outer wall; and an abdicating gap is formed between the outer ring and the inner ring.

Furthermore, the inner clamping structure comprises a plurality of longitudinal convex ribs formed on the inner wall of the inner ring and extending along the first direction, and a plurality of transverse convex ribs formed between two adjacent longitudinal convex ribs and provided with end faces perpendicular to the first direction; the first clamping body is a first clamping hook which is in one-to-one buckling fit with the plurality of transverse convex ribs.

Furthermore, an abutting part protruding outwards is formed on the outer wall of the positioning piece, and the abutting part is provided with an abutting surface abutting against the upper end surface of the inner ring.

Furthermore, outer joint structure is that the axial sets up a plurality of draw-in grooves of outer loop outer wall and inside concave yield, the second card body is that the axial evenly sets up the inner wall of shuttle knob, and with a plurality of draw-in groove buckle complex second pothook one by one.

Furthermore, the inner wall of the positioning piece is provided with a limiting structure protruding inwards, and the outer wall of the pressing rod is provided with a limiting protrusion protruding outwards and capable of abutting against the inner end face of the limiting structure.

Furthermore, the outer wall of the pressing rod is provided with a positioning convex rib, and the positioning piece is provided with a positioning groove which is matched with the positioning convex rib to prevent the pressing rod and the positioning piece from rotating relatively.

Furthermore, the inner wall of the shuttle flying knob is provided with a step structure, and the step structure can be abutted against the inner end face of the keycap to limit the pressing stroke of the pressing piece.

On the other hand, the embodiment of the utility model provides a medical equipment is still provided, including as above-mentioned flying shuttle knob subassembly structure.

The utility model discloses technical scheme has following advantage:

1. the flying shuttle knob component structure provided by the utility model is characterized in that the positioning piece is assembled on the flying shuttle bracket, and the positioning piece is sleeved on the periphery of the pressing rod and is penetrated through by the pressing rod; in the process of pressing the pressing piece, the flying shuttle knob can restrain the keycap to move along the first direction, and the positioning piece can also restrain the pressing rod to move along the first direction, so that the pressing piece is not easy to incline in the pressing process, the consistency of the gap between the keycap and the flying shuttle knob is better, and the attractiveness is improved; on the other hand, in the process of bouncing the pressing piece, the locating piece also has the constraint effect on the motion direction of the pressing rod, so that the bouncing process of the pressing piece can be smoother, and the occurrence of the pause phenomenon is reduced.

2. The utility model provides a fly shuttle knob subassembly structure, setting element and fly the shuttle knob pass through the buckle and install the mode on flying the shuttle support, have simple structure, advantage that the fastness is high.

3. The utility model provides a fly shuttle knob subassembly structure, interior joint structure sets up on the inner ring of flying shuttle support, and outer joint structure sets up on the outer loop of flying shuttle support, and the flying shuttle support that this kind of structure set up is assembling the in-process on flying shuttle support in tandem with flying shuttle knob and setting element, owing to have the clearance of stepping down between inner ring and the outer loop for the resistance that the assembly process of the especially back part of part equipment need be overcome is littleer, and the equipment operation is more convenient.

4. The utility model provides a fly shuttle knob subassembly structure, location groove cooperation on location fin through the press bar outer wall and the setting element can prevent to take place relative rotation according to press bar and setting element, and then can avoid the character on the key cap to appear problem not placed in the middle.

Drawings

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

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

fig. 2 is an exploded view of a flying shuttle knob assembly according to an embodiment of the present invention;

fig. 3 is a schematic overall structural diagram of a shuttle flying bracket according to an embodiment of the present invention;

fig. 4 is a schematic view of an overall structure of a positioning member according to an embodiment of the present invention;

fig. 5 is a schematic overall structure diagram of a shuttle flying knob according to an embodiment of the present invention;

fig. 6 is a schematic overall structure diagram of a pressing member according to an embodiment of the present invention;

fig. 7 is a schematic view of a connection structure of a positioning member and a pressing member according to an embodiment of the present invention;

fig. 8 is a schematic view of a half-section structure of a shuttle flying knob, a positioning member and a pressing member according to an embodiment of the present invention.

Description of reference numerals:

1. a shuttle flying support; 11. a shuttle body; 111. leading out the terminal; 12. an inner ring; 121. longitudinal convex ribs; 122. transverse convex ribs; 13. an outer ring; 131. a card slot; 132. a first inclined guide surface; 133. positioning a groove; 14. a abdication gap; 2. a shuttle flying knob; 21. a shuttle cap; 211. anti-slip ribs; 212. an annular bottom surface; 22. connecting columns; 221. a second hook; 222. an open slot; 223. reinforcing ribs; 224. positioning blocks; 225. a step structure; 226. a yielding groove; 3. a pressing member; 31. a keycap; 32. a pressing lever; 33. a limiting bulge; 34. positioning convex ribs; 4. a positioning member; 41. a first hook; 42. an abutting portion; 43. a limiting structure; 431. a second inclined guide surface; 44. a positioning groove; 5. a circuit board; 6. an elastic element.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of 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 noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The embodiment provides a flying shuttle knob component structure, which can be widely applied to electronic equipment, particularly medical monitoring equipment, and is convenient for a user to control the medical monitoring equipment.

As shown in fig. 1 and 2, the shuttle knob assembly structure includes a shuttle bracket 1, a shuttle knob 2, a pressing member 3 and a positioning member 4. Wherein, the shuttle bracket 1 is arranged on the circuit board 5, and a middle through hole is arranged in the middle of the circuit board along the axis direction along the first direction; the shuttle knob 2 can be assembled on the outer wall of the shuttle bracket 1 and is provided with a central hole which is coaxially arranged with the middle through hole; the pressing piece 3 comprises a keycap 31 and a pressing rod 32, one end of the pressing rod 32 is connected with the keycap 31, and the other end of the pressing rod 32 penetrates through the central hole along a first direction and extends to the middle through hole; the positioning element 4 can be assembled on the shuttle flying bracket 1 and is sleeved on the periphery of the other end of the pressing rod 32 for restricting the movement direction of the pressing rod 32. Wherein the first direction is a direction in which the pressing piece 3 is pressed down or rebounded. The pressing movement of the pressing element 3 can activate the corresponding adjusting function by triggering contacts on the circuit board 5 via the spring element 6 fixed on the circuit board 5.

In the shuttle knob assembly with the structure, besides the shuttle knob 2 can restrict the keycap 31 to do the pressing or rebounding movement along the first direction, the positioning member 4 is sleeved on the periphery of the pressing rod 32 to restrict the pressing rod 32 to do the pressing or rebounding movement along the first direction. Due to the arrangement, in the process of pressing the pressing piece 3, the pressing piece 3 is not easy to incline, the consistency of the gap between the keycap 31 and the shuttle flying knob 2 is better, and the attractiveness is improved; on the other hand, in the bouncing process of the pressing piece 3, due to the constraint effect of the positioning piece 4 on the movement direction of the pressing rod 32, the rebounding process of the pressing piece 3 is smoother and is not easy to cause a stuck phenomenon, and the pressing hand feeling of the flying shuttle knob assembly is improved.

In the embodiment, the positioning piece 4 is fixedly connected with the shuttle flying bracket 1 through a buckle; the flying shuttle knob 2 is fixedly connected with the flying shuttle bracket 1 through a buckle. The positioning piece 4 and the flying shuttle knob 2 are installed on the flying shuttle support 1 through the buckles, and the flying shuttle support has the advantages of simple structure, convenience in assembly and high firmness. In other embodiments, the positioning member 4 and the shuttle knob 2 may be bolted, screwed, taped, glued, or the like.

Referring to fig. 3, in the present embodiment, the shuttle holder 1 is embodied as a potentiometer having three terminals 111, and the potentiometer generally includes a resistor and a movable brush, the brush moves along the resistor under the driving of the shuttle knob 2, and outputs a resistance value or a voltage value signal proportional to the displacement at an output terminal for adjusting temperature, color, brightness, volume, etc.

As shown in fig. 1, 2 and 3, the shuttle holder 1 includes a shuttle body 11 mounted on the circuit board 5, and an inner ring 12 and an outer ring 13 connected to the shuttle body 11, wherein the inner ring 12 and the outer ring 13 both extend outward in a first direction on the shuttle body 11 to form an outwardly protruding annular structure, the outer ring 13 surrounds the outer periphery of the inner ring 12 and is rotatable relative to the inner ring 12, and a relief gap 14 is provided between the inner ring 12 and the outer ring 13. The positioning piece 4 is fixed on the inner wall of the inner ring 12 through a buckling structure, and the shuttle flying knob 2 is fixed on the outer wall of the outer ring 13 through the buckling structure. In the flying shuttle bracket 1 with the structure, as the abdicating gap 14 is arranged between the inner ring 12 and the outer ring 13, in the process of assembling the flying shuttle knob 2 and the positioning piece 4 on the flying shuttle bracket 1 in tandem, the resistance which needs to be overcome in the assembly process of the components, particularly the assembly process of the latter component, is smaller, and the operation is more convenient; in addition, the two are less obstructed in the relative movement process.

As shown in fig. 3 and fig. 4, in this embodiment, an inner clamping structure is formed on an inner wall of the inner ring 12, the positioning member 4 has a first clamping body mutually fastened with the inner clamping structure in a first direction, an abutting portion 42 protruding outward is further integrally formed on an outer wall of the positioning member 4, and when the inner clamping structure is mutually fastened with the first clamping body, a lower end surface of the abutting portion 42 abuts against an upper end surface of the inner ring 12, so that the positioning member 4 is fixedly connected with the shuttle flying support 1.

As shown in fig. 3, the inner locking structure includes a plurality of longitudinal ribs 121 formed on an inner wall of the inner ring 12 and extending along a first direction, and a plurality of transverse ribs 122 formed between two adjacent longitudinal ribs 121 and having end surfaces perpendicular to the first direction; the first locking body is a first hook 41 which is in one-to-one snap fit with the plurality of transverse ribs 122. In this embodiment, the number of the transverse ribs 122 and the first hooks 41 is four, and the transverse ribs 122 are uniformly circumferentially spaced, and are integrally formed on the inner wall of the inner ring 12. In other embodiments, the number of the transverse ribs 122 may also be two, three, five or more; the transverse ribs 122 may also be connected only between the two longitudinal ribs 121 and not to the inner wall of the inner ring 12.

Specifically, the cross section of the longitudinal rib 121 to which the transverse rib 122 is partially connected is trapezoidal, and the cross section of the longitudinal rib 121 to which the transverse rib 122 is not connected is square. Because the transverse rib 122 is buckled with the first hook 41 and then receives the acting force of the first hook 41, the acting force is transmitted to the longitudinal rib 121, and the cross section of the longitudinal rib 121 is set to be trapezoidal, so that the deformation resistance of the longitudinal rib 121 can be improved.

As shown in fig. 4, in the present embodiment, the abutting portion 42 includes four arc-shaped protrusions arranged at regular intervals, and the lower end surfaces of the arc-shaped protrusions are abutting planes abutting against the upper end surface of the inner ring 12. Have the space between two adjacent arc lugs, four first pothooks 41 on the setting element 4 are formed by the body of setting element 4 outwards extending on the position that four spaces correspond, and first pothook 41 corresponds the setting with the space, and in the drawing of patterns production process of setting element 4, butt portion 42 can not cause the interference to the drawing of patterns route of first pothook 41, makes things convenient for the drawing of patterns preparation of setting element 4.

As shown in fig. 4, in particular, the first hook 41 has a slanted guide surface in the insertion direction of the positioning member 4 and the shuttle hook 1. The inclined guide surface is arranged to guide the first hook 41 into the middle through hole of the shuttle flying bracket 1, and is connected with the inner clamping structure on the inner ring 12 in a buckling manner.

As shown in fig. 3 and 5, in this embodiment, an outer clamping structure is formed on an outer wall of the outer ring 13, the shuttle knob 2 has a second clamping body which is mutually fastened with the outer clamping structure in a first direction, a step structure 225 which protrudes inward a central hole is further integrally formed on an inner wall of the shuttle knob 2, and when the outer clamping structure and the second clamping body are mutually fastened, a lower end surface of the step structure 225 abuts against an upper end surface of the outer ring 13, so that the shuttle knob 2 and the shuttle bracket 1 are fixedly connected.

Specifically, the outer clamping structure is four clamping grooves 131 axially arranged on the outer wall of the outer ring 13 and recessed inwards, the second clamping bodies are second clamping hooks 221 axially and uniformly arranged on the inner wall of the shuttle flying knob 2 and in one-to-one snap fit with the four clamping grooves 131, and the number of the clamping grooves 131 and the number of the second clamping hooks 221 can be selected adaptively according to needs.

As shown in fig. 3, a first inclined guide surface 132 is disposed at a position corresponding to the slot 131 on the upper end of the outer ring 13 for guiding the second hook 221 into the slot 131.

As shown in fig. 5, in the present embodiment, the shuttle knob 2 includes the shuttle cap 21 and the connecting column 22 which are integrally formed, and the second hook 221 and the step structure 225 are integrally formed on the inner wall of the connecting column 22. The shuttle cap 21 is in a trapezoidal shape, and anti-slip ribs 211 are arranged on the periphery of the shuttle cap to facilitate the rotation of the shuttle cap 21 by hand. The lower end surface of the shuttle cap 21 has an annular end surface which abuts against the mounting surface of the housing when the shuttle knob assembly structure is mounted on the housing of the device.

As shown in fig. 5, in a preferred embodiment of the present embodiment, the connecting column 22 at two sides of the second hook 221 is provided with an open slot 222, and the arrangement of the open slot 222 can reduce the structural strength of the connecting column 22 at the position corresponding to the second hook 221, improve the bending deformation capability of the second hook 221, and facilitate guiding the second hook 221 into the slot 131 of the outer ring 13. More preferably, the outer wall of the connecting column 22 corresponding to the second hook 221 is integrally formed with a reinforcing rib 223, and the arrangement of the reinforcing rib 223 can improve the structural strength of the second hook 221, so that the second hook 221 is not easily damaged in the bending deformation process. The matching arrangement of the open slot 222 and the reinforcing rib 223 on the connecting column 22 ensures that the second hook 221 has certain bending deformation capability, and the shuttle flying knob 2 is conveniently assembled on the outer ring 13 in a buckling manner; on the other hand, the position of the second hook 221 has higher structural strength, and is not easy to be damaged in the stressed bending deformation process.

As shown in fig. 3 and 5, the inner wall of the connecting column 22 is circumferentially provided with a plurality of positioning blocks 224, and the outer wall of the outer ring 13 is circumferentially provided with a plurality of positioning grooves 133 corresponding to the positioning blocks 224 one by one; after the connection post 22 and the outer ring 13 are fastened together, the positioning blocks 224 are respectively inserted into the corresponding positioning slots 133, and the openings of the positioning slots 133 are located on the upper end surface of the outer ring 13. Rotating the shuttle cap 21, driving the outer ring 13 and the inner ring 12 to rotate relatively through the connecting column 22, so that the electric brush on the outer ring 13 can be driven by the shuttle knob 2 to displace relatively with the resistor on the inner ring 12, and a resistance value or a voltage value signal which has a certain proportional relation with the displacement can be output, so as to select a corresponding regulation function; then, the circuit board 5 can be triggered to send a corresponding control signal by pressing the pressing piece 3 downwards.

As shown in fig. 5, the position of the stepped structure 225 corresponding to the second hook 221 is provided with an abdicating groove 226, the abdicating groove 226 corresponds to the position of the second hook 221, and the arrangement of the abdicating groove 226 on the stepped structure 225 can prevent the stepped structure 225 from interfering with the demolding path of the second hook 221, thereby facilitating the demolding preparation of the shuttle flying knob 2.

As shown in fig. 6, 7 and 8, in the present embodiment, the inner wall of the positioning member 4 is formed with a limiting structure 43 protruding inward, and the outer wall of the pressing rod 32 is formed with a limiting protrusion 33 protruding outward and capable of abutting against the inner end surface of the limiting structure 43. The two limit protrusions 33 are oppositely arranged on the outer surface of the pressing rod 32. After the pressing member 3 is assembled on the positioning member 4, the limiting structure 43 is engaged with the limiting protrusion 33, so as to prevent the pressing member 3 from being released from the positioning member 4.

Furthermore, the limit structure 43 is provided with a second inclined guide surface 431 in the inserting direction of the pressing rod 32 and the positioning element 4, and the limit protrusion 33 inclines from the bottom end of the pressing rod 32 to the keycap 31, so that the pressing rod 32 and the positioning element 4 can be conveniently inserted together.

As shown in fig. 6, in the present embodiment, a positioning rib 34 is formed on an outer wall of the pressing rod 32, and a positioning groove 44 is formed on the positioning member 4 and is engaged with the positioning rib 34 to prevent the pressing rod 32 and the positioning member 4 from rotating relatively. The positioning grooves 44 are four in number and are circumferentially and uniformly arranged on the positioning member 4. Through the cooperation of the positioning convex rib 34 on the outer wall of the pressing rod 32 and the positioning groove 44 on the positioning member 4, the pressing rod 32 and the positioning member 4 can be prevented from rotating relatively, and further the problem that the character on the keycap 31 is not centered can be avoided.

Specifically, the length direction of the positioning rib 34 is the same as the axial direction of the pressing rod 32, and the positioning rib 34 is integrally formed between the inner end surface of the key cap 31 and the pressing rod 32.

In a preferred embodiment of the present embodiment, as shown in fig. 7, four arc-shaped protrusions of the abutting portion 42 and four positioning recesses 44 are arranged on the positioning member 4 in a staggered manner. Because the positioning grooves 44 weaken the structural strength of the positions, the arc-shaped lugs protruding out of the positioning piece 4 reinforce the structural strength of the positions, and the four positioning grooves 44 and the four arc-shaped lugs are arranged in a staggered manner, the problem that the local positioning piece 4 is weak in structural strength can be avoided.

As shown in fig. 8, the upper end surface of the step structure 225 has an abutting plane that can abut against the inner end surface of the key cap 31 to limit the pressing stroke of the pressing piece 3.

In a preferred embodiment of this embodiment, in order to improve the light transmittance of the shuttle knob assembly, the positioning member 4 is made of a transparent material, so that the light emitted from the light-emitting element on the circuit board 5 can better penetrate through the shuttle knob 2, which is helpful for improving the recognition degree of the shuttle knob 2 in a dark room use environment.

The embodiment of the utility model provides a medical equipment is still provided, include the casing and install the flying shuttle button on the casing. The shell is a shell of the medical equipment, and the flying shuttle key is the flying shuttle rotating assembly structure in the embodiment. The corresponding regulating and controlling functions of the medical treatment equipment can be selected by rotating the shuttle cap 21 of the shuttle knob 2, the pressing piece 3 of the shuttle knob 2 is pressed down, and the elastic element 6 can touch the contact on the circuit board 5 to send the corresponding control signal.

In summary, in the shuttle flying knob assembly structure provided by the embodiment of the present invention, the positioning element 4 is fixedly assembled on the shuttle flying bracket 1, and the positioning element 4 is sleeved on the periphery of the pressing rod 32 and is penetrated through by the pressing rod 32, so that the positioning element 4 can limit the pressing rod 32 to perform downward pressing or rebounding motion along the first direction; on one hand, in the pressing process of the pressing piece 3, the pressing piece 3 is not easy to incline, the consistency of the gap between the keycap 31 and the shuttle flying knob 2 is better, and the attractiveness is improved; on the other hand, in the bouncing process of the pressing piece 3, due to the limiting effect of the positioning piece 4 on the movement direction of the pressing rod 32, the rebounding process of the pressing piece 3 is smoother and is not easy to cause a stuck phenomenon, and the pressing hand feeling of the flying shuttle knob assembly is improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (11)

1. A flying shuttle knob assembly structure comprising:

a shuttle carrier (1) having a central through hole extending in a first direction;

the shuttle flying knob (2) is assembled on the shuttle flying bracket (1) and is provided with a central hole which is coaxially arranged with the middle through hole;

the pressing piece (3) comprises a keycap (31) and a pressing rod (32), one end of the pressing rod (32) is connected with the keycap (31), and the other end of the pressing rod (32) penetrates through the central hole along the first direction and extends to the middle through hole;

and the positioning piece (4) is assembled on the shuttle flying support (1) and sleeved on the periphery of the other end of the pressing rod (32) and used for restraining the movement direction of the pressing rod (32).

2. The shuttle knob assembly structure according to claim 1, wherein the shuttle bracket (1) is provided with an inner clamping structure corresponding to the inner wall of the middle through hole, and the positioning member (4) is provided with a first clamping body mutually buckled with the inner clamping structure in the first direction.

3. The shuttle knob assembly structure according to claim 2, characterized in that the shuttle bracket (1) is provided with an external clamping structure corresponding to the outer wall of the middle through hole, and the shuttle knob (2) is provided with a second clamping body mutually buckled with the external clamping structure in the first direction.

4. The shuttle knob assembly structure according to claim 3, characterized in that said shuttle bracket (1) comprises:

a shuttle body (11) mounted on the circuit board (5);

the inner ring (12) is connected to the shuttle flying body (11), extends along the first direction to form the outer wall of the middle through hole, and the inner wall of the inner ring is formed with the inner clamping structure;

the outer ring (13) is connected to the shuttle flying body (11) and surrounds the periphery of the inner ring (12), and the outer wall of the outer ring is formed with the outer clamping structure; an abdicating gap (14) is arranged between the outer ring (13) and the inner ring (12).

5. The shuttle knob assembly structure according to claim 4, wherein said inner clamping structure comprises a plurality of longitudinal ribs (121) formed on the inner wall of said inner ring (12) and extending along said first direction, and a plurality of transverse ribs (122) formed between two adjacent longitudinal ribs (121) and having end surfaces perpendicular to said first direction; the first clamping bodies are first clamping hooks (41) which are in one-to-one buckling fit with the plurality of transverse convex ribs (122).

6. The shuttle knob assembly structure according to claim 5, characterized in that the outer wall of the positioning member (4) is formed with an abutment portion (42) protruding outward, the abutment portion (42) having an abutment surface abutting against the upper end surface of the inner ring (12).

7. The shuttle knob assembly structure according to claim 4, wherein the outer clamping structure is a plurality of clamping grooves (131) axially arranged on the outer wall of the outer ring (13) and recessed inwards, and the second clamping bodies are second clamping hooks (221) axially uniformly arranged on the inner wall of the shuttle knob (2) and snap-fitted with the plurality of clamping grooves (131) one by one.

8. The shuttle knob assembly structure according to claim 1, characterized in that the inner wall of the positioning member (4) is formed with a limiting structure (43) protruding inward, and the outer wall of the pressing rod (32) is formed with a limiting protrusion (33) protruding outward and capable of abutting against the inner end surface of the limiting structure (43).

9. The shuttle knob assembly structure according to claim 1, wherein the outer wall of the pressing rod (32) is formed with a positioning rib (34), and the positioning member (4) is provided with a positioning groove (44) which is matched with the positioning rib (34) to prevent the pressing rod (32) and the positioning member (4) from rotating relatively.

10. The shuttle knob assembly structure according to claim 1, characterized in that the inner wall of the shuttle knob (2) is provided with a step structure (225), the step structure (225) can be abutted against the inner end surface of the key cap (31) to limit the depression stroke of the pressing member (3).

11. A medical device comprising the shuttle knob assembly structure of any one of claims 1-10.

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