CN216724598U - Fetal heart monitor with rotatable display screen - Google Patents

Abstract

The utility model provides a display screen rotatable fetal heart monitor, which comprises a machine body and a display head, wherein a first end of the machine body is provided with a detection module; the display head is provided with a display module, the display module is electrically connected with the circuit board, and the display head is rotatably connected to the second end of the machine body; show that head pivoted pivot direction contains the edge fuselage length direction or perpendicular to one or more among the fuselage length direction work as when the pivot direction of showing the head contains perpendicular to fuselage length direction, the second of fuselage is served and is equipped with first stop device, and is right the rotation range of showing the head limits. This fetus-voice meter can one-hand operation, and can keep the screen to be in visual scope all the time through rotatory display screen when detecting.

Description

Fetal heart monitor with rotatable display screen

Technical Field

The utility model relates to the field of medical equipment, in particular to a fetal heart monitor.

Background

The fetal heart monitor comprises two main parts, namely a detection probe and a host, wherein a display screen is arranged on the host; the existing fetal heart rate instrument is structurally generally divided into a detection probe and a host machine separated type, and a detection probe and a host machine integrated type, wherein the detection probe and the host machine separated type has the advantages that a user observation screen cannot be influenced when the detection probe is moved to search for a fetal heart, and the existing fetal heart rate instrument has the defects that the user needs to operate with two hands, and the user experience is poor; the integrated detection probe and the host has the advantages that a user can operate with one hand to release the other hand, and the integrated detection probe and the host have the defects that when the user moves the fetal heart monitor to find the fetal heart position, the condition that the screen is not in the visual range can occur, so that the specific fetal heart rate value cannot be read, and the user experience is influenced.

In view of the above problems, it is desirable to provide a fetal heart monitor capable of being operated by one hand and keeping the screen within a visible range during detection.

Disclosure of Invention

In order to solve the problems, the utility model provides a fetus-voice meter with a rotatable display screen, which can be operated by a single hand and can always keep the screen within a visual range by rotating the display screen during detection.

In order to achieve the purpose, the utility model adopts the technical scheme that: a display screen rotatable type fetus-voice meter comprises a machine body and a display head, wherein a detection module is arranged at a first end of the machine body, a circuit board is arranged in the machine body, and the detection module is electrically connected with the circuit board; the display head is provided with a display module, the display module is electrically connected with the circuit board, and the display head is rotatably connected to the second end of the machine body; show that head pivoted pivot direction contains the edge fuselage length direction or perpendicular to one or more among the fuselage length direction work as when the pivot direction of showing the head contains perpendicular to fuselage length direction, the second of fuselage is served and is equipped with first stop device, and is right the rotation range of showing the head limits.

Preferably, when the rotating shaft direction of the display head comprises the length direction of the machine body, the display head is rotatably connected to the second end of the machine body through a rotating connecting rod, and one of the machine body and the display head is rotatably connected to the first end of the rotating connecting rod.

Preferably, the rotating connecting rod is provided with a second limiting device, and the machine body or the display head which is rotatably connected with the first end of the rotating connecting rod is provided with a third limiting device which is matched with the second limiting device.

Preferably, the rotation connection part is provided with an electrical connection structure, the electrical connection structure is composed of a connection contact and a connection contact piece, one of the connection contact and the connection contact piece is arranged at the first end of the rotation link, the other one of the connection contact and the connection contact piece is arranged on a machine body or a display head which is correspondingly and rotatably connected with the first end of the rotation link, one of the connection contact and the connection contact piece is electrically connected with the circuit board, and the other one of the connection contact and the connection contact piece is electrically connected with the display module.

Preferably, the rotary connecting structure consists of a spherical bulge and a spherical rotary connecting sleeve which are matched with each other; wherein one of spherical protrusion and spherical rotary connecting sleeve is established on the first end of rotating connecting rod, the other establish with the first end of rotating connecting rod corresponds on the fuselage or the display head of rotating the connection, under the assembled state spherical rotary connecting sleeve cover is established on the spherical protrusion, constitute and rotate the connection.

Preferably, the second end of the rotating link is hinged to one of the second end of the body and the display head, which is not connected to the first end of the rotating link, and the rotating axis direction of the rotating link is perpendicular to the length direction of the body.

Preferably, the second end of the rotating link is fixedly connected to one of the second end of the body and the display head, which is not connected to the first end of the rotating link, in one or more of direct machining, interference fit, pin fixation, screw fixation, and the like.

Preferably, when the rotating shaft direction of the display head is only perpendicular to the length direction of the machine body, the machine body is connected with the display head in a hinged mode.

Preferably, an outer edge surrounding the display head is formed on the second end of the body, and a rotary damping strip in contact with the display head is arranged on the outer edge.

Preferably, the display module comprises a display screen circuit board, a display screen and a display panel, the detection module comprises a piezoelectric ceramic piece, the piezoelectric ceramic piece is electrically connected with the circuit board, a power module is arranged inside the machine body, and the power module is electrically connected with the circuit board.

The utility model has the beneficial effects that: the body of the display screen rotatable type fetal rhythm instrument is integrated with the detection module and the display module, so that a user can operate the instrument with one hand, and the instrument is convenient and flexible; meanwhile, the display head provided with the display module is rotatably connected with the machine body, so that the display screen can rotate within a certain angle range, and a user can randomly adjust the angle of the display screen according to the requirement of the observation angle during detection, thereby always keeping the screen within a visible range and realizing observation without dead angles.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic external view of a first embodiment of the present invention;

FIG. 3 is a schematic diagram of a display head in a first rotational angle state according to a first embodiment of the present invention;

FIG. 4 is a schematic view of a display head in a second rotation angle state according to a first embodiment of the present invention;

FIG. 5 is a sectional view taken along line A-A of FIG. 1;

FIG. 6 is a schematic diagram of a second embodiment of the present invention;

FIG. 7 is a schematic diagram of a third embodiment of the present invention;

FIG. 8 is a diagram illustrating a fourth implementation manner of the embodiment of the present invention;

FIG. 9 is a diagram illustrating a fourth implementation manner of the embodiment of the present invention;

FIG. 10 is a diagram illustrating a fourth implementation of the embodiment of the present invention;

FIG. 11 is a diagram illustrating a fifth implementation of the embodiment of the present invention;

FIG. 12 is a diagram illustrating a fifth implementation of the present invention;

FIG. 13 is a diagram illustrating a fifth implementation of the present invention;

FIG. 14 is a diagram illustrating a sixth implementation manner of the embodiment of the present invention;

FIG. 15 is a diagram illustrating a sixth implementation manner of the embodiment of the present invention;

FIG. 16 is a diagram illustrating a sixth implementation of the embodiment of the present invention;

FIG. 17 is a diagram illustrating a sixth implementation of the embodiment of the present invention;

FIG. 18 is a schematic diagram of a seventh embodiment of the utility model;

fig. 19 is a schematic diagram of an eighth embodiment of the present invention.

In the above drawings: 1. a body; 11. rotating the connecting rod; 111. a spherical bulge; 112. a connection contact; 113. a fuselage hinge; 114. a limiting block; 12. a circuit board; 13. an angle limiting plate; 14. an outer edge; 15. rotating the damping strip; 16. a power supply module; 17. a power switch; 18. a volume switch; 2. a display head; 21. a spherical rotary connecting sleeve; 22. connecting a contact piece; 23. a display screen circuit board; 24. a display screen; 25. a display panel; 26. a display portion hinge; 27. a limiting strip; 3. a detection module; 31. piezoelectric ceramic piece.

Detailed Description

The utility model is further described with reference to the following figures and examples:

the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.

The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

The terms "front", "rear", "upper", "lower", "left" and "right" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the scope of protection and the actual direction of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 5, in a first embodiment, a display screen rotatable type fetus-voice meter is provided, which includes a machine body 1 and a display head 2, wherein the machine body 1 is provided with a detection module 3 at a first end, a rotation link 11 at a second end, a circuit board 12 is arranged inside the machine body 1, and the detection module 3 is electrically connected to the circuit board 12; display head 2 passes through rotary connecting rod 11 rotationally connects on the fuselage 1, be equipped with display module on the display head 2, display module with circuit board 12 electric connection.

When the device works, the detection module 3 transmits the acquired information to the circuit board 12, and the circuit board 12 outputs the result to the display module for displaying; the detection module 3 comprises a piezoelectric ceramic piece 31, the piezoelectric ceramic piece 31 is connected to the circuit board 12 through a lead, the display module comprises a display screen circuit board 23, a display screen 24 and a display panel 25, and the display screen circuit board 23 is electrically connected with the circuit board 12; the detection module 3 is the prior art, and a person skilled in the art can flexibly select the detection module according to specific needs, and the specific structure of the detection module is not the utility model point of the present application, so that the present application is not described in detail.

In this embodiment, the first end of the rotating link 11 is fixedly connected to the second end of the body 1, the second end of the rotating link 11 forms a spherical protrusion 111, the display head 2 is provided with a spherical rotating connecting sleeve 21 matched with the spherical protrusion 111, and in the assembled state of the display head 2 and the body 1, the spherical rotating connecting sleeve 21 is sleeved on the spherical protrusion 111 to form a rotating connection between the spherical rotating connecting sleeve 21 and the spherical protrusion 111; in the rotary connection, the rotation of the spherical rotary connecting sleeve 21 around a first rotating shaft in the circumferential direction and the rotation of the spherical rotary connecting sleeve 21 around a second rotating shaft are included, the first rotating shaft is the length direction of the machine body 1, and the second rotating shaft is perpendicular to the first rotating shaft, wherein the number of the second rotating shafts can be countless and is distributed on a perpendicular surface of the axis of the rotary connecting rod 11. In the rotary connection, the rotation of the spherical rotary connecting sleeve 21 around the rotating shaft which is along the length direction of the machine body 1 and the rotation of the spherical rotary connecting sleeve 21 around the rotating shaft which is perpendicular to the length direction of the machine body 1 can be included at the same time, as shown in fig. 3 and 4, the rotary connection has a very large rotation range.

The spherical rotary connecting sleeve 21 is located inside the housing of the display head 2, as shown in fig. 1, the spherical rotary connecting sleeve 21 is located at the geometric center of the display head 2, the first end of the display head 2 has an opening, and the rotary connecting rod 11 extends into the opening to form the spherical protrusion 111 to match with the spherical rotary connecting sleeve 21; an angle limiting plate 13 is formed at the second end of the machine body 1, and the outer edge of the opening is used as a limiting part to be abutted and matched with the angle limiting plate 13 so as to limit the rotation amplitude of the display head 2; in the present embodiment, the angle limiting plate 13 limits the display head 2 to rotate between a first rotation angle state shown in fig. 3 and a second rotation angle state shown in fig. 4, where the first rotation angle and the second rotation angle are included angles between a plane where the display screen 24 is located and the length direction of the main body 1, the first rotation angle is 5 degrees in the present embodiment, and the second rotation angle is 35 degrees; in actual implementation, by changing the position of the angle limiting plate 13, the range of the rotation angle of the display head 2 can be increased or decreased, for example, the angle limiting plate 13 is away from the display head 2 to increase the range of the rotation angle, and the angle limiting plate 13 is close to the display head 2 to decrease the range of the rotation angle, and the range of the rotation angle of the display head 2 can also be changed by changing the size and shape of the opening, for example, decreasing the opening to decrease the range of the rotation angle.

As shown in fig. 3, when the display head 2 reaches the extreme position shown as the area a, the state of the first rotation angle is shown as the included angle α in the figure; as shown in fig. 4, when the display head 2 reaches the extreme position shown in the area B, the second rotation angle state is shown as the included angle β in the figure.

In addition, a groove is formed at the first end of the rotating link 11, and the angle limiting plate 13 is embedded in the groove in an assembled state, so that the angle limiting plate 13 is fixedly connected with the rotating link 11; therefore, the angle limiting plate 13 has two functions of limiting and fixing the rotating connecting rod 11, the structure can be simplified, and the cost is reduced.

A second limiting device, which is a limiting block 114 in this embodiment, is arranged on the rotating link 11, and a third limiting device, which is a limiting strip 27 in this embodiment, is arranged on the display head 2 and is matched with the second limiting device, as shown in fig. 5; in the embodiment, the rotation of the limiting block 114 is limited by the mutual interference between the limiting block 114 and the limiting strip 27, so that the axial rotation of the display head 2 around the body 1 is limited, and the display head 2 is prevented from rotating around the body 1 for multiple circles in the same direction, so that the display head 2 and the circuit board 12 can be electrically connected through a wire, the wire is prevented from being wound on the rotating connecting rod 11, and further risks such as wire fracture and the like which may be caused are avoided; the display head 2 and the circuit board 12 can be electrically connected economically and effectively by using a conducting wire, and the manufacturing cost and the assembly difficulty are lower.

In this embodiment, an outer edge 14 surrounding the display head 2 is formed on the second end of the body 1, and a rotary damping strip 15 contacting with the display head 2 is arranged on the outer edge 14; this adds a certain frictional resistance to the display head 2 when it is rotated, thereby preventing the display head 2 from rotating by itself when the user is not rotating.

In this embodiment, a power module 16 is disposed inside the body 1, and the power module 16 is connected to the circuit board 12 through a wire; wherein the power module 16 is a battery disposed inside the body 1, and in practical implementation, the power module 16 can also supply power to the fetal heart monitor by accessing an external power source.

In this embodiment, the main body 1 is provided with a power switch 17 and a volume switch 18.

The body 1, the detection module 3 and the display module of the display screen rotatable type fetal heart monitor are integrated, so that a user can operate the fetal heart monitor with one hand, and the fetal heart monitor is convenient and flexible; meanwhile, the display head 2 provided with the display module is rotatably connected with the machine body 1, so that the display screen 24 can rotate within a certain angle range, and a user can adjust the angle of the display screen 24 randomly according to the requirement of an observation angle during detection, thereby always keeping the screen within a visible range and realizing observation without dead angles.

Example two:

as shown in fig. 6, the second embodiment is different from the first embodiment in that the positions of the spherical protrusions 111 and the spherical rotation connecting sleeves 21 are reversed, that is, the spherical protrusions 111 are disposed on the display head 2, and the spherical rotation connecting sleeves 21 matched with the spherical protrusions 111 are disposed at the second end of the rotation link 11, so that the rotation of the display head 2 in the aforementioned range can also be realized.

Example three:

as shown in fig. 7, the third embodiment is different from the second embodiment in that the rotation link 11 is not provided with a limiting block 114, the display head 2 is not provided with a limiting strip 27, but the surface of the spherical protrusion 111 is embedded with a connection contact 112, and the inner side surface of the spherical rotation connection sleeve 21 is covered with a connection contact piece 22, so that in the assembled state of the display head 2 and the body 1, the connection contact 112 is electrically contacted with the connection contact piece 22; the connection contacts 112 are connected to the circuit board 12 by wires, and the connection contact pieces 22 are connected to the display screen circuit board 23 by wires; with this structure, the electrical connection between the display screen circuit board 23 and the circuit board 12 can be maintained when the display head 2 is arbitrarily rotated. The connection contact piece 22 may be more than one piece, and correspondingly, the connection contact 112 may be more than one piece.

In practical implementation, the positions of the spherical protrusions 111 and the spherical rotary connecting sleeves 21 can be reversed, and the positions of the connecting contacts 112 and the connecting contact pieces 22 can be reversed, as in the embodiment.

Example four:

the fourth embodiment shown in fig. 8 is different from the above embodiments in that the display head 2 is rotatably connected to the main body 1.

In this embodiment, the second end of fuselage 1 be equipped with the first end normal running fit's of rotating link 11 structure, fuselage 1 with the relative center of rotation of rotating link 11 is for following fuselage 1 length direction, its normal running fit's mode does not do the restriction in this embodiment, for example can be rotating link 11 with groove structure on the fuselage 1 directly cooperates, also can adopt the mode that increases rolling bearing reduces frictional force etc.. The second end of rotatory connecting rod 11 be provided with can with the articulated complex fuselage articulated joint 113 of display head 2, be provided with on the display head 2 with the articulated complex display portion articulated joint 26 of fuselage articulated joint, fuselage articulated joint 113 with the articulated cooperation of display portion articulated joint 26.

Under the state shown in fig. 8, promptly rotating link 11 with fuselage 1 is rotatory to be cooperated the fuselage articulated joint 113 with during the articulated cooperation of display portion articulated joint 26, rotating link 11 and the whole that display head 2 constitutes can rotate around fuselage 1 length direction, and when stopper 114 and spacing strip 27 were contradicted, rotating link 11 and the whole that display head 2 constitutes obtains the restriction around the axial of fuselage 1 rotates. The display head 2 can also rotate around the center of the hinge fit (in the direction perpendicular to the paper in fig. 8), and the angle limiting plate 13 can limit the rotation angle of the display head 2.

As shown in fig. 9 to 10, in the present embodiment, the limit blocks 114 and the limit bars 27 may not be provided, but the connection contacts 112 and the corresponding connection contact pieces 22 may be provided at the rotation fitting and/or the hinge fitting.

Example five:

the fifth embodiment shown in fig. 11-13 is different from the fourth embodiment in that the body 1 and the rotating link 11 are engaged in a hinged manner, and the rotating link 11 and the display head 2 are connected in a rotatable manner.

In the states shown in fig. 11-13, the display head 2 can rotate around the length direction of the body 1, and the way of the rotational fit is not limited in this embodiment, for example, the rotational link 11 can be directly fitted with a groove structure on the display head, or a way of adding a rotational bearing can be adopted.

The whole body formed by the display head 2 and the rotating connecting rod 11 can rotate around a hinge center (in the direction perpendicular to the paper surface in fig. 11-13), and the angle limiting plate 13 can limit the rotating angle of the whole body formed by the display head 2 and the rotating connecting rod 11.

Example six:

fig. 14 shows a sixth embodiment, which is different from the above-mentioned embodiments in that the display head 2 is rotatably connected to the main body 1.

In this embodiment, the first end fixed connection of rotating link 11 is in the second of fuselage 1 is served, rotating link 11 the second end be equipped with display head 2 normal running fit's structure, display head 2 can with fuselage 1 length direction rotates as the pivot. The rotation fit mode is not limited in this embodiment, and for example, the rotation link 11 may be directly fit with the groove structure on the display head 2, or a mode of adding a rotation bearing may be adopted. In the engaged state shown in fig. 10, the display head 2 can rotate around the longitudinal direction of the main body 1. The rotating connecting rod 11 is provided with a limiting block 114, the display head 2 is provided with a limiting strip 27, and the limiting strip are matched with each other to limit the rotating angle of the display head 2.

As shown in fig. 15, in this embodiment, the first end of the rotating link 11 may be rotatably connected to the main body 1, the second end of the rotating link is fixedly connected to the display head 2, and the main body 1 is provided with a position-limiting strip 27, that is, the two are interchanged.

As shown in fig. 16-17, in this embodiment, the positioning of the limiting block 114 and the limiting strip 27 may also be eliminated, and the connection contact 112 and the connection contact 22 are disposed at the rotation connection position, so that the screen on the display head 2 is always electrically connected to the circuit board 12 during the rotation of the whole of the display head 2 and the rotating link 11 relative to the main body 1.

Compared with the above-described embodiment, the display head 2 in the present embodiment can only rotate in the circumferential direction with the rotation link 11 as the rotation axis, and the rotation range is small, but the structure is relatively simple and the cost is low.

Example seven:

fig. 18 shows an embodiment seven, which is different from the above-mentioned embodiments in that the display head 2 is rotatably connected to the main body 1 in a different manner.

In this embodiment, a body hinge 113 capable of being in hinge fit is fixedly disposed at the second end of the body 1, and a display portion hinge 26 capable of being in hinge fit with the body hinge 113 is fixedly disposed on the display head 2. The display module on the display head 2 is directly electrically connected to the circuit board 12 through a wire.

Under the state shown in fig. 18, namely when the body joint 113 is in hinged fit with the display part joint 26, the display head 2 can rotate by using the direction perpendicular to the length direction of the body as a rotating shaft (shown as the direction perpendicular to the paper), and the angle limiting plate 13 can limit the rotating angle of the display head 2.

Example eight:

as shown in fig. 19, the eighth embodiment is different from the seventh embodiment in that the body hinge 113 is provided with a connection contact 112, the display part hinge 26 is provided with a connection contact 22, which form a set of electrical engagement structures, and the connection contact 112 and the connection contact 22 are always in contact during the rotation of the display head 2, so that the display screen 24 and the circuit board 12 are always electrically connected.

In this embodiment, the positions of the connection contact 112 and the connection contact piece 22 are reversed, that is, the connection contact 112 is disposed on the body hinge 113, and the connection contact piece 22 is disposed on the display portion hinge 26.

In the above embodiments, fig. 8 to 19 are only for explaining the rotational connection between the main body 1 and the display head 2, and therefore, the display circuit board 23, the display 24, the display panel 25, and the like are simplified, but it should be understood that they do not hinder the explanation of the rotational connection between the main body 1 and the display head 2 in the corresponding embodiments.

In the above embodiment, the fixing connection manner of the rotating link 11 and the body 1 or the display head 2 may be groove clamping in embodiment 1, that is, interference fit, or may be directly formed in a growing manner in the production process, or may adopt at least one of fixing manners such as pins, screws, and bonding.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a display screen rotatable formula child heart appearance which characterized in that: the portable electronic device comprises a machine body (1) and a display head (2), wherein a detection module (3) is arranged at a first end of the machine body (1), a circuit board (12) is arranged in the machine body (1), and the detection module (3) is electrically connected with the circuit board (12); a display module is arranged on the display head (2), the display module is electrically connected with the circuit board (12), and the display head (2) is rotatably connected to the second end of the machine body (1); show first (2) pivoted pivot direction and contain the edge fuselage (1) length direction or perpendicular to when the pivot direction of demonstration head (2) contains perpendicular to fuselage (1) length direction, fuselage (1) second is served and is equipped with first stop device, right the rotation range of demonstration head (2) is restricted.

2. The fetal heart monitor with the rotatable display screen as claimed in claim 1, wherein: when show first (2) pivoted pivot direction contains along fuselage (1) length direction time, show first (2) rotationally connect in through a rotating link (11) the second end of fuselage (1), fuselage (1) with show one of the two of first (2) with the first end of rotating link (11) rotates and is connected.

3. The fetal heart monitor with the rotatable display screen as claimed in claim 2, wherein: the rotating connecting rod (11) is provided with a second limiting device, and the machine body (1) or the display head (2) which is rotationally connected with the first end of the rotating connecting rod (11) is provided with a third limiting device which is matched with the second limiting device.

4. The fetal heart monitor with the rotatable display screen as claimed in claim 2, wherein: the rotating connection part is provided with an electrical connection structure, the electrical connection structure is composed of a connection contact (112) and a connection contact sheet (22), one of the connection contact (112) and the connection contact sheet (22) is arranged at the first end of the rotating connecting rod (11), the other one is arranged on the machine body (1) or the display head (2) which is correspondingly and rotatably connected with the first end of the rotating connecting rod (11), one of the connection contact (112) and the connection contact sheet (22) is electrically connected with the circuit board (12), and the other one is electrically connected with the display module.

5. The fetal heart monitor as claimed in any one of claims 2 to 4, wherein: the rotary connecting structure consists of spherical bulges (111) and spherical rotary connecting sleeves (21) which are matched with each other; wherein one of spherical protrusion (111) and spherical rotary connecting sleeve (21) is established on the first end of rotating connecting rod (11), the other establish with the first end of rotating connecting rod (11) corresponds on rotating fuselage (1) or display head (2) of connecting, spherical rotary connecting sleeve (21) cover is established under the assembled state on spherical protrusion (111), constitutes to rotate and connects.

6. The fetal heart monitor with a rotatable display screen according to any one of claims 2 to 4, wherein: the second end of the rotating connecting rod (11) is hinged to the second end of the machine body (1) and one of the display heads (2) which is not connected with the first end of the rotating connecting rod (11), and the rotating shaft direction of the rotating connecting rod is perpendicular to the length direction of the machine body (1).

7. The fetal heart monitor with a rotatable display screen according to any one of claims 2 to 4, wherein: the second end fixed connection of rotatory connecting rod (11) be in fuselage (1) second end with in the display head (2) the two not with on one that rotatory connecting rod (11) first end is connected, its fixed connection mode be directly processing generate, interference fit, pin fixed, screw fixation etc. in one or more of the mode.

8. The fetal heart monitor with the rotatable display screen as claimed in claim 1, wherein: when the rotating shaft direction of the display head (2) is only perpendicular to the length direction of the machine body (1), the machine body (1) is connected with the display head (2) in a hinged mode.

9. The fetal heart monitor with the rotatable display screen as claimed in claim 1, wherein: the second end of fuselage (1) is last to be formed with and to encircle outer edge (14) of display head (2), be equipped with on outer edge (14) with rotatory damping strip (15) that display head (2) contacted.

10. The fetal heart monitor with the rotatable display screen as claimed in claim 1, wherein: the display module comprises a display screen circuit board (23), a display screen (24) and a display panel (25), the detection module (3) comprises a piezoelectric ceramic piece (31), the piezoelectric ceramic piece (31) is electrically connected with the circuit board (12), a power module (16) is arranged inside the machine body (1), and the power module (16) is electrically connected with the circuit board (12).

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