CN109833059B

CN109833059B - Portable ultrasonic equipment

Info

Publication number: CN109833059B
Application number: CN201710706577.8A
Authority: CN
Inventors: 宫明晶; 黄明进; 陆坚
Original assignee: Chison Medical Technologies Co ltd
Current assignee: Chison Medical Technologies Co ltd
Priority date: 2017-08-17
Filing date: 2017-08-17
Publication date: 2023-09-29
Anticipated expiration: 2037-08-17
Also published as: CN109833059A

Abstract

The invention relates to portable ultrasonic equipment, which comprises a host part and a detection part, wherein the host part comprises a host end shell, a host end and a host end connector, and the detection part comprises a detection end shell, a detection end and a detection end connector; the method is characterized in that: the detection component is inserted into the accommodating cavity from an opening of the connector shell to enable the detection end connector to be connected with the host end connector; the host end shell is provided with a locking mechanism, the locking mechanism comprises a locking connecting rod and a button, the locking connecting rod is provided with a first locking block, the button is provided with a second locking block, the first locking block and the second locking block can lock the detection end shell from the two ends of the containing cavity, and unlocking can be realized when the button is pressed. The connector with a compact structure and a locking function is adopted, so that the connection safety of the detection part is ensured, and the limitation on the appearance and the size of ultrasonic equipment is avoided.

Description

Portable ultrasonic equipment

Technical Field

The invention relates to portable ultrasonic equipment, and belongs to the technical field of ultrasonic imaging equipment.

Background

At present, the application of ultrasonic equipment in clinical diagnosis and treatment is very popular, and great contribution is made to doctors accurately knowing the illness state of patients, making medical schemes and assisting treatment, and portable and miniaturized ultrasonic products are continuously appeared and are increasingly popular in order to adapt to various different use environments. The ultrasonic diagnostic equipment mainly comprises a host and a detection component, wherein the host component is responsible for information processing, image processing and the like, the detection component generally comprises a transducer, a connecting wire and the like, the detection component transmits detection ultrasonic waves to a human body under the control of the host component and transmits returned detection information back to the host component for processing, and because one host component is often required to be provided with a plurality of detection components, the host component is connected with the detection components through connectors, and the detection components are convenient to replace. The existing portable ultrasonic equipment uses connectors at the host end and the detection part end which are connectors with locking structures, the size of the connectors is larger, the locking structures have larger limitation on the appearance of products, and the development of the ultrasonic diagnostic equipment towards the direction of lightening and individuation is not facilitated; other relatively miniaturized connectors often do not have locking function, and the plugging force of the connector is insufficient to ensure the connection safety of the detection component. Or some products are provided with locking structures, but two hands are required to be matched with the plug-in detection part, so that the use is inconvenient.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides portable ultrasonic equipment, which adopts a connector with a locking function so as to ensure the connection safety of detection components.

According to the technical scheme provided by the invention, the portable ultrasonic equipment comprises a host part and a detection part, wherein the host part comprises a host end shell, a host end and a host end connector, and the detection part comprises a detection end shell, a detection end and a detection end connector; the method is characterized in that: the detection component is inserted into the accommodating cavity from an opening of the connector shell to enable the detection end connector to be connected with the host end connector;

the host end shell is provided with a locking mechanism, the locking mechanism comprises a locking connecting rod, a button and a first elastic body, the locking connecting rod is provided with a first locking block, one end of the button is a pressing surface exposed out of the outer surface of the host end shell, and the other end of the button is provided with a second locking block; the rear end of the connector shell is provided with a first locking opening allowing the first locking block to extend into the accommodating cavity along the X direction, and the front end of the connector shell is provided with a second locking opening allowing the second locking block to extend into the accommodating cavity along the Y direction; the first elastic body provides an acting force for enabling the first locking block and the second locking block to extend into the accommodating cavity to the locking connecting rod and the button;

the first locking block is provided with a first locking block inclined plane and a first locking straight plane, the second locking block is provided with a second locking block inclined plane and a second locking straight plane, the first locking block inclined plane and the second locking block inclined plane face towards the opening of the connector shell, and the first locking straight plane and the second locking straight plane face are opposite to the opening of the connector shell; the front end and the rear end of the detection end shell are respectively provided with a second limiting block and a first limiting block, the first limiting block is provided with a first limiting block inclined plane matched with the first locking block inclined plane, and the second limiting block is provided with a second limiting block inclined plane matched with the second locking block inclined plane.

Further, the front end of the locking connecting rod is provided with a first pushing inclined plane, and the button is provided with a second pushing inclined plane; the first elastic body is arranged between the locking connecting rod and the host end shell, the first pushing inclined plane is matched with the second pushing inclined plane, the first pushing inclined plane presses the second pushing inclined plane of the button along the Y direction under the action of the first elastic body, and acting force towards one end of the pressing surface is provided for the button.

Further, the locking mechanism further comprises a fixing piece, the fixing piece is fixed on the shell of the host end, and the first elastic body is connected between the locking connecting rod and the fixing piece.

Further, the second pushing inclined plane is arranged at the upper end of the second locking block, and the second locking block inclined plane is arranged at the lower end of the second locking block; the lower end of the second locking block extends into the accommodating cavity from the second locking opening.

Further, the first elastic bodies are two, one of the first elastic bodies provides force in the X direction for the locking connecting rod to enable the first locking block to extend into the accommodating cavity, and the other elastic body provides force in the Y direction for the button to enable the second locking block to extend into the accommodating cavity.

Further, an anti-rebound mechanism is arranged on the host end shell, the anti-rebound mechanism comprises a bayonet lock and a second elastomer, the bayonet lock stretches into the accommodating cavity along a bayonet lock passing port at the front end of the connector shell, and the second elastomer provides an acting force for the bayonet lock to stretch into the accommodating cavity; one end of the bayonet lock extending into the accommodating cavity is provided with a first rebound extrusion surface and a second rebound extrusion surface; a rebound trigger block is arranged on the detection end shell, and a first trigger surface and a second trigger surface which are respectively matched with the first rebound extrusion surface and the second rebound extrusion surface are arranged on the rebound trigger block; the button is provided with an anti-rebound block, the anti-rebound block is provided with an anti-rebound block inclined plane, the clamping pin is provided with a clamping pin locking inclined plane and a clamping pin locking straight plane, the clamping pin locking inclined plane and the anti-rebound block inclined plane are positioned on the upper side of the clamping pin locking inclined plane, and the anti-rebound block can be prevented from moving downwards.

Further, a notch is formed in the clamping pin, and a clamping pin locking inclined plane is arranged at the notch.

Further, the locking bevel of the locking pin is arranged to protrude beside the locking pin.

Further, the second elastic body is arranged between the bayonet lock and the host end shell or between the bayonet lock and the mounting piece, wherein the mounting piece is fixed on the host end shell.

Further, the bayonet lock is equipped with the bayonet lock guide slot that is used for the direction.

The invention has the following advantages:

(1) The connector with the locking function is adopted to ensure the connection safety of the detection component; the connector is miniaturized, has a compact structure, and can avoid the limitation on the appearance and the size of ultrasonic equipment;

(2) The invention adopts the rebound prevention mechanism, and can prevent the button from rebounding in the process of pulling out the detection part, so that the pulling-out operation is simpler and more convenient.

Drawings

Fig. 1 is a schematic structural view of a portable ultrasonic apparatus according to the present invention.

Fig. 2 is a schematic installation view of the connector locking structure.

Fig. 3 is an exploded view of the connector locking structure.

Fig. 4 is a schematic cross-sectional view of the connector in a connected state.

Fig. 5 is a perspective view of the host side housing.

Fig. 6 is a perspective view of the host side housing from another perspective.

Fig. 7 is a perspective view of the locking link.

Fig. 8 is a perspective view of the button.

Fig. 9 is a perspective view of the detection member housing.

Fig. 10 is a perspective view of the detection member housing from another perspective.

Fig. 11 is a perspective view of the bayonet.

Fig. 12 is a schematic cross-sectional view of the locking structure when the detecting member and the host member are in a locked state.

Fig. 13 is a partial cross-sectional view of the locking structure when the detecting member and the host member are in a locked state.

Fig. 14 is a schematic view of the structure of the rebound prevention mechanism in a normal state.

Fig. 15 is a cross-sectional view of the rebound prevention mechanism in a normal state.

Fig. 16 is a sectional view of the rebound prevention mechanism in a state where the button is prevented from rebounding.

Reference numerals illustrate: 100-host part, 110-host side housing, 111-receiving cavity, 112-connector opening, 113-first locking opening, 114-second locking opening, 115-bayonet passing opening, 116-button mounting hole, 117-stop rib, 118-connector housing, 120-locking mechanism, 121-locking link, 1211-first locking block, 1211 a-first locking block ramp, 1211 b-first locking block straight face, 1212-first push ramp, 1213-hook, 122-first elastomer, 123-securing member, 1231-securing hook, 124-button, 1241-push surface, 1242-second locking block, 1242 a-second locking block ramp, 1242 b-second locking block straight face, 1242 c-second push ramp, 1243-rebound prevention block 1243 a-rebound block ramp, 1243 b-rebound block straight face, 1244-stop edge, 130-rebound block, 131-detent, 1311-detent body, 1311 a-first detent surface, 1311 b-second detent surface, 1311 c-detent lock ramp, 1311 d-detent lock straight face, 1311 e-notch, 1311 f-detent guide groove, 1312-detent spring mount, 132-second elastomer, 133-mount, 140-host end, 150-host end connector, 200-detection member, 210-detection end housing, 211-first detent, 211 a-first detent ramp, 211 b-first detent straight face, 212-second detent, 212 a-second detent ramp, 212 b-second detent straight face, 213-rebound trigger block, 213 a-first trigger face, 213 b-second trigger face, 220-detection end, 230-detection end connector.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the portable ultrasonic apparatus of the present invention includes a main body part 100 and a detecting part 200. As shown in fig. 2 and 3, the host part 100 includes a host-side housing 110, a host-side 140, and a host-side connector 150, and the detecting part 200 includes a detecting-side housing 210, a detecting-side 220, and a detecting-side connector 230.

When the ultrasonic equipment is used, the host part 100 and the detection part 200 are connected with the detection end connector 230 through the host end connector 150, so that signal transmission is realized; as shown in fig. 5 and 6, a connector housing 118 is disposed on a side of the host connector 150 connected to the detection connector 230, the connector housing 118 has a receiving cavity 111 for receiving the host connector 150 and the detection connector 230, a limiting rib 117 is disposed in the receiving cavity 111, connector openings 112 are disposed on inner and outer sides of the connector housing 118, the host connector 150 is located at the inner connector opening 112, and the detection connector 230 is inserted into the receiving cavity 111 from the outer connector opening 112 to be connected to the host connector 150.

A locking mechanism 120 is provided on the main body end housing 110, and the locking mechanism 120 locks the detection end housing 210 to prevent the detection member 200 from falling off. A first locking opening 113 (shown in fig. 6) communicating with the accommodating chamber 111 is provided at the rear end of the connector housing 118, and a second locking opening 114 and a bayonet passing opening 115 (shown in fig. 5) communicating with the accommodating chamber 111 are provided at the front end of the connector housing 118, and the front-rear direction of the connector housing 118 is referred to as the X direction in the following description. As shown in fig. 3, the locking mechanism 120 includes a locking link 121, a first elastic body 122, a fixing member 123, and a button 124; as shown in fig. 7, the rear end of the locking link 121 is provided with a first locking block 1211, the front end of the locking link 121 is provided with a first pushing inclined plane 1212, and the locking link 121 is provided with a hook 1213; a button mounting hole 116 (as shown in fig. 5) is formed in the main body end housing 110 at the front end of the connector housing 118, the button mounting hole 116 penetrates through the main body end housing 110, a button 124 is mounted in the button mounting hole 116, the button 124 can slide along the button mounting hole 116, one end of the button 124 penetrating through the surface of the main body end housing 110 is a pressing surface 1241, one end of the button 124 located inside the main body end housing 110 is provided with a stop edge 1244 and a second locking block 1242 matched with the second locking opening 114, and the axial direction of the button 124 is taken as the Y direction in the following description; the fixing member 123 is fixedly mounted on the main unit end housing 110 at the front end of the connector housing 118 by a screw, a fixing hook 1231 is provided on the fixing member 123, a first elastic body 122 is connected between the fixing hook 1231 of the fixing member 123 and the hook portion 1213 of the locking connecting rod 121, the elastic force of the first elastic body 122 tightens the locking connecting rod 121 towards the front end, so that the first locking block 1211 of the locking connecting rod 121 extends into the accommodating cavity 111 from the first locking opening 113, and the rear end portion of the detecting end connector 230 located in the accommodating cavity 111 is conveniently locked. As shown in fig. 8, the second pushing inclined plane 1242c, which is matched with the first pushing inclined plane 1212 at the front end of the locking link 121, is provided at the upper end of the second locking block 1242 of the button 124, and the first pushing inclined plane 1212 of the locking link 121 presses the second pushing inclined plane 1242c of the button 124 under the action of the first elastic body 122, so that the pressing surface 1241 of the button 124 exposes the surface of the host end housing 110 under the action of the first elastic body 122; the lower end of the second locking block 1242 is engaged with the second locking opening 114, and the lower end of the second locking block 1242 extends into the accommodating cavity 111 from the second locking opening 114, so as to lock the front end of the detecting-end connector 230 in the accommodating cavity 111. When the pressing surface 1241 of the button 124 is pressed, the button 124 moves inward of the main body end housing 110 in the Y direction, compressing the first elastic body 122, and moving the first locking piece 1211 of the locking link 121 to the rear end away from the accommodation chamber 111, thereby releasing the locked state of the rear end portion of the detection end housing 210, and at the same time, the second locking piece 1242 of the button 124 also moves away from the accommodation chamber 111, releasing the locked state of the front end portion of the detection end housing 210. In this embodiment, the detection member 200 can be pulled out while the button 124 is pressed.

As shown in fig. 9 and 10, a second stopper 212 and a first stopper 211 are provided at the front end and the rear end of the detection end housing 210, respectively; as shown in fig. 9, the first stopper 211 has a first stopper inclined surface 211a and a first stopper straight surface 211b; as shown in fig. 10, the second stopper 212 has a second stopper slope 212a and a second stopper straight surface 212b; as shown in fig. 7, the first locking block 1211 has a first locking block inclined surface 1211a and a first locking block straight surface 1211b; as shown in fig. 8, the second lock block 1242 has a second lock block inclined surface 1242a and a second lock block straight surface 1242b. The first stopper slope 211a and the first locking block slope 1211a are engaged with each other, the second stopper slope 212a and the second locking block slope 1211a are engaged with each other, when the detecting end housing 210 is inserted into the connector housing 118, the first stopper slope 211a contacts with the first locking block slope 1211a and presses the first locking block slope 1211a, the locking link 121 moves toward the rear end in the X direction, and the first locking block 1211 moves out of the first locking opening 113; meanwhile, the second stopper inclined surface 212a contacts with the second locking block inclined surface 1242a and presses and pushes the second locking block inclined surface 1242a, the button 124 moves toward the inside of the main unit end housing 110 in the Y direction, and the lower end of the second locking block 1242 moves out of the second locking opening 114; after the detection end housing 210 is inserted in place, the first stopper 211 and the second stopper 212 move to the inner sides of the first locking block 1211 and the second locking block 1242, respectively, at this time, the first locking block 1211 and the second locking block 1242 are reset under the action of the first elastic body 122, the first locking block straight surface 1211b contacts with the first stopper straight surface 211b, the second locking block straight surface 1242b contacts with the second stopper straight surface 212b, and the first locking block 1211 and the second locking block 1242 lock the rear end portion and the front end portion of the detection end housing 210 respectively, so that the detection part 200 can be automatically locked while being inserted. During locking, due to the elastic force of the first elastic body 122, a sound is generated to remind of locking in place.

As another embodiment of the present invention, an anti-rebound mechanism 130 is further provided on the host end housing 110, as shown in fig. 3, the anti-rebound mechanism 130 includes a bayonet 131, a second elastic body 132 and a mounting member 133, the mounting member 133 is mounted on the host end housing 110 at the front end of the connector housing 118 by a screw, and the second elastic body 132 is provided between the bayonet 131 and the mounting member 133; as shown in fig. 11, the latch 131 includes a latch main body 1311 and a latch spring mounting portion 1312, the second elastic body 132 is mounted on the latch spring mounting portion 1312, an end portion of the latch main body 1311 extends into the latch through hole 115 at the front end of the connector housing 118, the second elastic body 132 presses the latch 131 toward the connector housing 118 so that the end portion of the latch main body 1311 is located in the accommodation chamber 111, and a latch guide groove 1311f for guiding a moving direction of the latch 131 is provided on the latch main body 1311; the end of the bayonet body 1311 has a first resilient pressing surface 1311a and a second resilient pressing surface 1311b which are symmetrical, a resilient triggering block 213 is provided at the front end of the detection end housing 210, the resilient triggering block 213 has a first triggering surface 213a and a second triggering surface 213b, the first triggering surface 213a is matched with the first resilient pressing surface 1311a, and the second triggering surface 213b is matched with the second resilient pressing surface 1311 b; when the detection end housing 210 is inserted into the connector housing 118, the first trigger surface 213a presses the first resilient pressing surface 1311a to withdraw the bayonet body 131 from the bayonet passing opening 115 against the spring force of the second elastic body 132; when the detection end housing 210 is pulled out of the connector housing 118, the second trigger surface 213b presses the second resilient pressing surface 1311b, so as to ensure that the detection end housing 210 can pass smoothly. The location of the rebound trigger block 213 needs to ensure that the rebound trigger block 213 passes through the bayonet 131 before the locking process is started, otherwise, the locking will be disabled.

A notch 1311e is provided on the bayonet body 131, and a bayonet locking inclined surface 1311c is provided at the notch 1311 e; as shown in fig. 8, an anti-rebound block 1243 is provided on the button 124, the anti-rebound block 1243 has an anti-rebound block inclined surface 1243a and an anti-rebound block straight surface 1243b, and the anti-rebound block straight surface 1243b is located below the anti-rebound block inclined surface 1243 a. As shown in fig. 15, in a normal state, an anti-rebound block 1243 is located at the notch 1311e, and an anti-rebound block inclined surface 1243a is engaged with the latch lock inclined surface 1311 c. When the user needs to unlock the detection component 200, the user presses the pressing surface 1241 of the button 124, and the button 124 moves toward the inside of the host end housing 110 along the Y direction, so that the anti-rebound block inclined surface 1243a of the anti-rebound block 1243 acts on the latch locking inclined surface 1311c, the latch 131 moves toward the front end under the action of the anti-rebound block 1243, after the anti-rebound block 1243 passes through the notch 1311e of the latch 131, the latch 131 retreats into the accommodating cavity 111 under the action of the second elastic body 132, at this time, the anti-rebound block straight surface 1243b of the anti-rebound block 1243 contacts with the latch locking straight surface 1311d on the upper side of the latch locking inclined surface 1311c, and the latch locking straight surface 1311d prevents the anti-rebound block 1243 from rebounding downward, so that the locking structure of the locking link 121 and the button 124 is kept at the open position, and the locking structure is unlocked, at this time, the detection component 200 can be pulled out by one hand. The detection part 200 is in the process of pulling out, the rebound triggering block 213 acts on the end part of the bayonet lock main body 1311 again, so that the bayonet lock 131 is sprung back forwards, the resistance of the bayonet lock 131 to the rebound preventing block 1243 disappears, the rebound preventing block 1243 enters the notch 1311e, the button 124 and the locking connecting rod 121 rebound under the action of the first elastic body 122, and the initial state is restored.

The notch 1311e is not necessary in the present invention, and the notch 1311e is not required when the latch locking ramp 1311c is provided in a variety of ways, such as a sideways projecting arrangement, where the anti-rebound block 1243 can be moved smoothly.

In the present invention, the first elastic body 122 is preferably a tension spring, and is installed between the locking link 121 and the fixing member 123, but other elastic bodies may be used, and may be installed between the locking link 121 and the main body-side housing 110. The second elastic body 132 may also use a tension spring or other elastic member.

The button 124 of the present invention may be internally provided with a compression spring in accordance with the moving direction, to provide an auxiliary elastic force, and to increase smoothness.

Claims

1. A portable ultrasound device comprising a host component (100) and a detection component (200), the host component (100) comprising a host-side housing (110), a host-side (140) and a host-side connector (150), the detection component (200) comprising a detection-side housing (210), a detection-side (220) and a detection-side connector (230); the method is characterized in that: a connector housing (118) is arranged on one side of the connecting end of the host end connector (150), the connector housing (118) is provided with a containing cavity (111), and the detecting component (200) is inserted into the containing cavity (111) from an opening of the connector housing (118) so that the detecting end connector (230) is connected with the host end connector (150);

the host end shell (110) is provided with a locking mechanism (120), the locking mechanism (120) comprises a locking connecting rod (121), a button (124) and a first elastic body (122), the locking connecting rod (121) is provided with a first locking block (1211), one end of the button (124) is a pressing surface (1241) exposed out of the outer surface of the host end shell (110), and the other end of the button (124) is provided with a second locking block (1242); a first locking opening (113) allowing the first locking block (1211) to extend into the accommodating cavity (111) along the X direction is formed in the rear end of the connector shell (118), and a second locking opening (114) allowing the second locking block (1242) to extend into the accommodating cavity (111) along the Y direction is formed in the front end of the connector shell (118); the first elastic body (122) provides a force for enabling the first locking block (1211) and the second locking block (1242) to extend into the accommodating cavity (111) to the locking connecting rod (121) and the button (124);

the first locking block (1211) has a first locking block inclined surface (1211 a) and a first locking straight surface (1211 b), the second locking block (1242) has a second locking block inclined surface (1242 a), a second locking straight surface (1242 b) and a second pushing inclined surface (1242 c), the first locking block inclined surface (1211 a) and the second locking block inclined surface (1242 a) face an opening of the connector housing (118), and the first locking straight surface (1211 b) and the second locking straight surface (1242 b) face away from the opening of the connector housing (118); a second limiting block (212) and a first limiting block (211) are respectively arranged at the front end and the rear end of the detection end shell (210), the first limiting block (211) is provided with a first limiting block inclined surface (211 a) matched with the first locking block inclined surface (1211 a), and the second limiting block (212) is provided with a second limiting block inclined surface (212 a) matched with the second locking block inclined surface (1242 a);

the front end of the locking connecting rod (121) is provided with a first pushing inclined plane (1212), the first pushing inclined plane (1212) is matched with the second pushing inclined plane (1242 c), the first pushing inclined plane (1212) presses the second pushing inclined plane (1242 c) of the button (124) along the Y direction under the action of the first elastic body (122), and a acting force towards one end of the pressing surface (1241) is provided for the button (124);

a stop edge (1244) is arranged at one end of the button (124) positioned on the inner side of the host end shell (110).

2. The portable ultrasound device of claim 1, wherein: the first elastic body (122) is arranged between the locking connecting rod (121) and the host end shell (110).

3. The portable ultrasound device of claim 1, wherein: the locking mechanism (120) further comprises a fixing piece (123), the fixing piece (123) is fixed on the host end shell (110), and the first elastic body (122) is connected between the locking connecting rod (121) and the fixing piece (123).

4. The portable ultrasound device of claim 2, wherein: the second pushing inclined surface (1242 c) is arranged at the upper end of the second locking block (1242), and the second locking block inclined surface (1242 a) is arranged at the lower end of the second locking block (1242); the lower end of the second locking block (1242) extends into the accommodating cavity (111) from the second locking opening (114).

5. The portable ultrasound device of claim 1, wherein: the first elastic bodies (122) are two, one provides force in the X direction for the locking connecting rod (121) to enable the first locking block (1211) to extend into the accommodating cavity (111), and the other provides force in the Y direction for the button (124) to enable the second locking block (1242) to extend into the accommodating cavity (111).

6. The portable ultrasound device of any of claims 1-5, wherein: an anti-rebound mechanism (130) is arranged on the host end shell (110), the anti-rebound mechanism (130) comprises a clamping pin (131) and a second elastic body (132), the clamping pin (131) stretches into the accommodating cavity (111) along a clamping pin passing opening (115) at the front end of the connector shell (118), and the second elastic body (132) provides an acting force for the clamping pin (131) to enable the clamping pin (131) to stretch into the accommodating cavity (111); one end of the bayonet lock (131) extending into the accommodating cavity (111) is provided with a first rebound extrusion surface (1311 a) and a second rebound extrusion surface (1311 b); a rebound trigger block (213) is arranged on the detection end shell (210), and a first trigger surface (213 a) and a second trigger surface (213 b) which are respectively matched with the first rebound extrusion surface (1311 a) and the second rebound extrusion surface (1311 b) are arranged on the rebound trigger block (213); the button (124) is provided with an anti-rebound block (1243), the anti-rebound block (1243) is provided with an anti-rebound block inclined plane (1243 a), the bayonet lock (131) is provided with a bayonet lock inclined plane (1311 c) and a bayonet lock straight plane (1311 d), the bayonet lock inclined plane (1311 c) and the anti-rebound block inclined plane (1243 a), and the bayonet lock straight plane (1311 d) is positioned on the upper side of the bayonet lock inclined plane (1311 c) and can prevent the anti-rebound block (1243) from moving downwards.

7. The portable ultrasound device of claim 6, wherein: a notch (1311 e) is formed in the bayonet lock (131), and a bayonet lock locking inclined plane (1311 c) is arranged at the notch (1311 e).

8. The portable ultrasound device of claim 6, wherein: the latch locking inclined surface (1311 c) is arranged to protrude to the side of the latch (131).

9. The portable ultrasound device of claim 6, wherein: the second elastic body (132) is arranged between the bayonet lock (131) and the host end shell (110) or between the bayonet lock (131) and the mounting piece (133), wherein the mounting piece (133) is fixed on the host end shell (110).

10. The portable ultrasound device of claim 6, wherein: the bayonet lock (131) is provided with a bayonet lock guide groove (1311 f) for guiding.