Ultrasonic head and ultrasonic apparatus

Abstract

The utility model provides an ultrasonic head and ultrasonic equipment. Wherein the ultrasonic head comprises a shell, the shell is provided with at least one opening, and an accommodating space is formed in the shell; the energy converter is assembled in the accommodating space, and the energy converter is used for generating ultrasonic waves; the circuit board is at least partially located in the containing space, the circuit board is electrically connected with the transducer, the circuit board comprises a first surface and a second surface which are opposite to each other, and the first surface comprises an exposed part exposed to the external environment through the opening; the first surface is provided with an exposed part, the plurality of first electric connecting pieces are arranged on the exposed part, each first electric connecting piece in the first electric connecting pieces is provided with an electric contact surface, and the electric contact surfaces of the plurality of first electric connecting pieces and the exposed part of the first surface are located on the same plane.

Description

Technical Field

[0001] The utility model relates to the field of electronic devices, in particular to an ultrasonic head and an ultrasonic device. Background Art

[0002] In order to meet the increasingly diverse usage requirements of users, in the ultrasonic electronic devices sold in the market in the past few years, there has appeared a design form in which a main unit and an ultrasonic head are detachably connected, and different ultrasonic heads can meet the multi-functional requirements of the device through their replaceable types.

[0003] Electric power and data can be provided from one device to another through one or more linear conductors, optical fiber cables or other conductor cables. When an electronic device appears in the form of a main unit and a replaceable and detachable accessory, it is necessary to contact the two in the form of contacts on the device without the intervention of other cables.

[0004] In the above system where the contacts of the main unit and the ultrasonic head are connected to each other, the contacts can be located on the surface of the electronic device, may have a relatively large depth and occupy a relatively large volume space in the electronic device. This also means that the electronic device will be limited by the layout design of the contacts and lose a part of the space, which is not conducive to the functional arrangement inside the device. Moreover, electronic devices are often manufactured in large quantities, and any simplification of the manufacturing process of these contact structures can bring huge cost savings.

[0005] At the same time, when the ultrasonic device is used for physical therapy or skin care, it needs to be used in conjunction with a coupling agent or a skin care essence, etc., and it is necessary to effectively clean the electronic device after use to maintain the normal use of the device. These events may cause the coupling agent or the skin care essence to unexpectedly penetrate into the device interior through the gaps of the detachable structure and stay and condense, or the poor contact structure design may lead to unexpected cleaning difficulties, which will inevitably increase the effectiveness of cleaning and maintenance and a series of negative events such as the electrical connection failure of the contacts.

[0006] Therefore, it is necessary to be easy to clean and occupy less surface area, depth and volume of the electronic device. Summary of the Utility Model

[0007] The purpose of the utility model is to provide an ultrasonic head, in which the electrical contact surfaces of a plurality of first electrical connectors are in the same plane.

[0008] An embodiment of the utility model provides an ultrasonic head, including:

[0009] A housing, the housing has at least one opening, and a receiving space is formed inside the housing;

[0010] A transducer, the transducer is assembled in the receiving space, and the transducer is used to generate ultrasonic waves;

[0011] A circuit board, at least a part of which is located in the accommodating space. The circuit board is electrically connected to the transducer. The circuit board includes opposite first and second surfaces, and the first surface includes an exposed portion that is exposed to the external environment through the opening.

[0012] A plurality of first electrical connectors are provided on the exposed portion. Each of the first electrical connectors has an electrical contact surface, and the electrical contact surfaces of the plurality of first electrical connectors are located in the same plane as the exposed portion of the first surface.

[0013] As a further improvement of an embodiment of the present invention, the housing includes:

[0014] A metal shell having an inner sidewall and an outer sidewall opposite to the inner sidewall. The inner sidewall is fixedly connected to the transducer, and the ultrasonic waves generated by the transducer are transmitted from the inner sidewall to the outer sidewall.

[0015] An encapsulation shell that encapsulates the metal shell to form the accommodating space, and the opening is provided on the encapsulation shell.

[0016] As a further improvement of an embodiment of the present invention, it further includes an elastic conductive member electrically connected to the circuit board. The free end of the elastic conductive member abuts against the transducer and undergoes elastic deformation to electrically connect the circuit board and the transducer.

[0017] As a further improvement of an embodiment of the present invention, the transducer is a piezoelectric ceramic sheet; the piezoelectric ceramic sheet is configured in a sheet shape.

[0018] As a further improvement of an embodiment of the present invention, the transducer and the circuit board are arranged relatively parallel. One end of the elastic conductive member is fixedly connected to the second surface, and the elastic conductive member is perpendicular to the second surface and the transducer.

[0019] As a further improvement of an embodiment of the present invention, the housing has a horizontal outer surface wall extending outward along the wall of the opening, and the exposed portion of the first surface is flush with or lower than the outer surface wall.

[0020] As a further improvement of an embodiment of the present invention, the electrical contact surfaces located in the same plane are arranged in an array, and the array arrangement includes one or any combination of a rectangular array, a circular array, and a path array.

[0021] As a further improvement of an embodiment of the present utility model, it further includes a sealing ring disposed around the periphery of the opening, and the sealing ring is disposed between the wall of the housing and the circuit board to seal the gap between the housing and the circuit board.

[0022] As a further improvement of an embodiment of the present utility model, a temperature sensor is further disposed in the accommodating space, and the temperature sensor is used to detect the temperature of the transducer.

[0023] An embodiment of the present utility model provides an ultrasonic head, including:

[0024] A housing having a plurality of openings and a horizontal outer surface wall extending outward along the walls of the openings;

[0025] A plurality of first electrical connectors, each of the first electrical connectors being located in an opening of the housing, and each of the first electrical connectors having an electrical contact surface for making electrical connection with a corresponding second electrical connector of the host when the ultrasonic head is mated with the host;

[0026] A circuit board disposed in the housing and electrically connected to the plurality of first electrical connectors;

[0027] A transducer disposed in the housing and electrically connected to the circuit board, the transducer being used for generating ultrasonic waves;

[0028] Wherein, the electrical contact surface of each of the plurality of first electrical connectors is flush with the outer surface wall.

[0029] As a further improvement of an embodiment of the present utility model, it further includes a plurality of sealing rings, the plurality of first electrical connectors are arranged in one-to-one correspondence with the plurality of openings, and each sealing ring fills the gap between the circumferential side surface of each first electrical connector and the wall of the corresponding opening.

[0030] As a further improvement of an embodiment of the present utility model, the sealing ring is made of an insulating material formed of plastic.

[0031] As a further improvement of an embodiment of the present utility model, the circuit board is electrically connected to the transducer through an elastic conductive member.

[0032] As a further improvement of an embodiment of the present utility model, the housing includes a metal shell and a packaging shell, the packaging shell encapsulates the metal shell to form an accommodating space for accommodating the circuit board and the transducer, the opening is disposed on the packaging shell; the transducer is disposed in a fitting manner on the inner wall of the metal shell.

[0033] As a further improvement of an embodiment of the present utility model, the electrical contact surfaces are arranged in an array, and the array arrangement includes one or any combination of a rectangular array, a circular array, and a path array.

[0034] An embodiment of the present utility model also provides an ultrasonic device, including a main unit and the ultrasonic head described in any of the above embodiments. The ultrasonic head is installed on the main unit. The housing has a first connection portion, and the main unit includes a second connection portion for cooperating with the first connection portion and a second electrical connection member for electrically connecting with the first electrical connection member.

[0035] As a further improvement of an embodiment of the present utility model, the ultrasonic device includes at least two different ultrasonic heads. The different ultrasonic heads have transducers with different resonant frequencies, and at least two different ultrasonic heads can be selectively assembled on the main unit to generate ultrasonic waves with different frequencies.

[0036] The ultrasonic head and the ultrasonic device provided by the present utility model have multiple first electrical connection members, and the electrical contact surfaces of the multiple first electrical connection members are in the same plane as the exposed part of the first surface, enabling the device to have a better spatial layout and being convenient for cleaning and maintenance at the same time. Description of the Drawings

[0037] Figure 1 A three-dimensional schematic diagram of an electronic device according to an embodiment of the present utility model;

[0038] Figure 2 For Figure 1 A schematic diagram showing the state where the accessory of the electronic device shown is separated from the main unit;

[0039] Figure 3 For Figure 1 A three-dimensional schematic diagram of the accessory shown;

[0040] Figure 4 For Figure 1 A three-dimensional schematic diagram of the main unit shown and a partial enlarged view of the second connection portion;

[0041] Figure 5 A schematic diagram showing that the main unit of the present utility model can be adapted to different accessories;

[0042] Figure 6 A cross-sectional view and a partial enlarged view of the main unit and the accessory after connection according to an embodiment of the present utility model;

[0043] Figure 7 For Figure 4 A structural schematic diagram of the main unit at the second connection portion shown;

[0044] Figure 8 For Figure 1Schematic diagram of the structure of the shown accessory at the first connection part;

[0045] Figure 9 is Figure 1 Schematic diagram of the relative position relationship between the accessory of the shown electronic device and the bump when the accessory is in the initial assembly position;

[0046] Figure 10 is Figure 1 Schematic diagram of the relative position relationship between the accessory of the shown electronic device and the bump when the accessory is in the target assembly position;

[0047] Figure 11 is Figure 1 Schematic diagram of the relative position relationship between the accessory of the shown electronic device and the bump when the accessory is in the wrong initial assembly position;

[0048] Figure 12 is a schematic diagram of the movement trajectory of the elastic part in one embodiment;

[0049] Figure 13 is Figure 12 Schematic diagram of the elastic force of the shown elastic part varying with the moving distance;

[0050] Figure 14 is a schematic diagram of the movement trajectory of the elastic part in another embodiment;

[0051] Figure 15 is a schematic diagram of the movement trajectory of the elastic part in yet another embodiment;;

[0052] Figure 16 is Figure 15 Schematic diagram of the elastic force of the shown elastic part varying with the moving distance;

[0053] Figure 17 Schematic diagram of the elastic force of the elastic part varying with the moving distance in yet another embodiment;

[0054] Figure 18 is a schematic diagram of the elastic force of the elastic part varying with the moving distance in still another embodiment;

[0055] Figure 19 is a schematic diagram of the sectional structure of the elastic part in one embodiment;

[0056] Figure 20 is a schematic diagram of the sectional structure of the elastic part in another embodiment;

[0057] Figure 21 is a schematic diagram of the movement trajectory of the electrical contact in one embodiment;

[0058] Figure 22 is a schematic diagram of the movement trajectory of the electrical contact in another embodiment;

[0059] Figure 23 Schematic diagram of the movement trajectory of the point contact in another embodiment;

[0060] Figure 24 It is Figure 1 Schematic diagram of the sectional structure of Attachment 1 shown;

[0061] Figure 25 It is Figure 24 Schematic diagram of the sectional structure of the exploded Attachment shown;

[0062] Figure 26 Schematic diagram of the sectional structure of the attachment in another embodiment;

[0063] Figure 27 Schematic diagram of the sectional structure of a part of the attachment in yet another embodiment;

[0064] Figure 28 Schematic diagram of the layout of the first electrical connector in one embodiment;

[0065] Figure 29 Schematic diagram of the layout of the first electrical connector in another embodiment;

[0066] Figure 30 Schematic diagram of the sectional structure of the attachment in still another embodiment;

[0067] Figure 31 It is Figure 30 Schematic diagram of the structure of the circuit board with the first electrical connector shown. Specific embodiments

[0068] The following detailed description refers to the accompanying drawings that form a part of this specification. The illustrative embodiments mentioned in the specification and the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Under the inspiration of this application, those skilled in the art can understand that many other embodiments can be adopted and various changes can be made to the described embodiments without departing from the gist and scope of protection of the present invention. It should be understood that the various aspects of this application described and illustrated herein can be arranged, replaced, combined, separated, and designed in many different configurations, and these different configurations are all within the scope of protection of this application.

[0069] Refer to Figure 1 and Figure 2 The present invention provides an electronic device, which includes Attachment 1 and Host 2. Electrical components such as a control board and a battery can be installed in Host 2. Attachment 1 can be detachably installed on Host 2. In a specific embodiment, Attachment 1 can be rotatably installed on Host 2.

[0070] Refer to Figure 3 andFigure 4 , the accessory 1 may have a first electrical connector 50, and the host 2 may have a second electrical connector 27. The accessory 1 includes functional elements. When the accessory 1 is installed on the host 2, the first electrical connector 50 and the second electrical connector 27 are electrically connected, so that power and control signals can be transmitted from the host 2 to the accessory 1 to control the operation of the functional elements.

[0071] In this embodiment, the electronic device is a handheld electronic device. The host 2 may include a handle, and the user can hold the host 2 for convenient use of the electronic device.

[0072] See Figure 5 , in an embodiment of the present invention, the user can replace different accessories 1 according to their own needs, and different accessories 1 may have functional elements with different parameters or functions. That is, one host 2 can be matched with multiple accessories 1, thus meeting the diverse needs of users.

[0073] The electronic device provided in any embodiment of this application may be a treatment device, the accessory 1 may be a treatment head, and the functional element may be an element that generates a treatment function. In some specific embodiments provided by the present invention, the electronic device may be a beauty instrument, and the functional element may be a filter.

[0074] See Figure 6 , in a specific example provided by the present invention, the electronic device is an ultrasonic device, the accessory 1 is an ultrasonic head, and the functional element is a transducer 13, which is used to generate ultrasonic waves. The user can use the ultrasonic device to output ultrasonic waves to achieve skin care, pain treatment, etc.

[0075] See Figures 1 to 6 , in an embodiment provided by the present invention, the accessory 1 further includes a first connection portion 30. The host 2 includes a second connection portion 20. The accessory 1 has an initial assembly position and a target assembly position relative to the host 2, and the accessory 1 can rotate relative to the host 2 between the initial assembly position and the target assembly position about a first axis X1.

[0076] In this embodiment, the accessory 1 may have a first axis X1, and the host 2 may have a second axis X2. When the accessory 1 is installed on the host 2, the first axis X1 and the second axis X2 may coincide, and both are the rotation axis X of the accessory 1.

[0077] When the accessory 1 is in the initial assembly position, the first connection portion 30 and the second connection portion 20 are disengaged, and the accessory 1 can be separated from the host 2. When the accessory 1 is in the target assembly position, the first connection portion 30 cooperates with the second connection portion 20, so as to limit the movement of the accessory 1 relative to the host 2 to assemble the accessory 1 on the host 2.

[0078] In this embodiment, when the user installs Attachment 1, Attachment 1 can be first placed at the initial assembly position, and then Attachment 1 is rotated along the first direction A so that Attachment 1 rotates relative to the host 2 to the target assembly position, completing the assembly of Attachment 1.

[0079] When the user wants to remove Attachment 1, the user can rotate Attachment 1 along the second direction opposite to the first direction A so that Attachment 1 rotates from the target assembly position to the initial assembly position. When Attachment 1 rotates relative to the host 2 to the initial assembly position, the first connecting portion 30 is disengaged from the second connecting portion 20, and the first connecting portion 30 and the second connecting portion 20 no longer restrict the movement of Attachment 1 relative to the host 2, and the user can directly separate Attachment 1 from the host 2.

[0080] As follows, the first connecting portion 30 and the second connecting portion 20 in an embodiment of the present invention will be described in detail.

[0081] See Figure 3 and Figure 4 , in an embodiment of the present invention, one of the first connecting portion 30 and the second connecting portion 20 includes an elastic member 21, and the other includes an abutting wall 31 and a positioning groove 32. The abutting wall 31 has an initial end corresponding to the position of the elastic member 21 at the initial assembly position and a terminal end away from the initial end. The terminal end of the abutting wall 31 is connected to the positioning groove 32.

[0082] During the rotation of Attachment 1 relative to the host 2 from the initial assembly position to the target assembly position, the elastic member 21 can continuously press against the abutting wall 31 in at least some stages to generate an elastic force F. When the elastic member 21 passes over the terminal end and enters the positioning groove 32, at least part of the elastic force F of the elastic member 21 is released to generate a first click sound.

[0083] In this embodiment, the first connecting portion 30 can be provided on Attachment 1, and the second connecting portion 20 can be provided on the host 2. Of course, the second connecting portion 20 can also be provided on Attachment 1, and the first connecting portion 30 can be provided on the host 2.

[0084] See Figure 9 and Figure 10 , Figure 9 is a schematic diagram of the position of Attachment 1 relative to the host 2 when Attachment 1 is in the initial assembly position, Figure 10 is a schematic diagram of the position of Attachment 1 relative to the host 2 when Attachment 1 is in the target assembly position.

[0085] See Figure 9 , when Attachment 1 is installed at the initial assembly position, the end of the elastic member 21 points to the abutting wall 31, and force-bearing contact with the abutting wall 31 occurs at the initial assembly position or / and during rotation. During the force-bearing process, the elastic member 21 can undergo elastic deformation to generate an elastic force F.

[0086] It can be understood that in this embodiment, when in the initial assembly position, the elastic member 21 may only correspond to the initial end position of the abutting wall 31. However, at this time, the elastic member 21 does not undergo elastic deformation. When the accessory 1 rotates by a certain angle, the elastic member 21 begins to be in force contact with the abutting wall 31 and continuously presses against the abutting wall 31.

[0087] Of course, in other embodiments, the elastic member 21 may also be in force contact with the initial end of the abutting wall 31 in the initial assembly position, that is, during the entire rotation process of the accessory 1, the elastic member 21 continuously presses against the abutting wall 31, generating a continuous elastic force.

[0088] When the accessory 1 rotates relative to the main body 2 from the initial assembly position to the target assembly position, the elastic member 21 moves along the abutting wall 31 from the initial end to the terminal end.

[0089] When the elastic member 21 crosses the terminal end of the abutting wall 31 and enters the positioning groove 32, the accessory 1 rotates relative to the main body 2 to the target assembly position. At this time, the elastic force F of the elastic member 21 is released, and the elastic member 21 collides with the groove wall 321 of the positioning groove 32 or collides with the bottom of the positioning groove 32, thereby emitting a first click sound, thus providing an auditory feedback to the user. At the same time, the vibration brought by the collision also synchronously provides a tactile feedback to the user, prompting the user that the accessory 1 has rotated to the target assembly position.

[0090] In addition, when the elastic member 21 enters the positioning groove 32, the user must apply a certain force to rotate the accessory 1 to overcome the elastic force F of the elastic member 21 in order to make the elastic member 21 disengage from the positioning groove 32. That is, the cooperation between the elastic member 21 and the positioning groove 32 can also limit the rotation of the accessory 1 relative to the main body 2.

[0091] Furthermore, in an embodiment of the present invention, when the elastic member 21 presses against the terminal end of the abutting wall 31, the elastic force F of the elastic member 21 is greater than 50% of the maximum elastic force Fmax of the elastic member 21; when the elastic member 21 is placed in the positioning groove 32, the elastic force F of the elastic member 21 is less than 10% of the maximum elastic force Fmax.

[0092] In this embodiment, when the elastic member 21 presses against the terminal end of the abutting wall 31, the elastic deformation of the elastic member 21 is relatively large, and the generated elastic force F is also relatively large. When the elastic member 21 is placed in the positioning groove 32, the elastic deformation of the elastic member 21 is relatively small, and the generated elastic force F is also relatively small.

[0093] Therefore, during the process of rotating the accessory 1 from the initial assembly position to the target assembly position, when the elastic member 21 crosses the end of the abutting wall 31, the elastic force F of the elastic member 21 can be instantaneously released, so that the elastic member 21 collides with the groove wall 321 of the positioning groove 32 or the bottom of the positioning groove 32 to generate a first click sound. At the same time, the cooperation between the elastic member 21 and the positioning groove 32 restricts the rotation of the accessory 1 more, and the elastic member 21 will not easily escape from the positioning groove 32. Thus, when the accessory 1 is in the target assembly position, the stability of the cooperation between the first connecting portion 30 and the second connecting portion 20 can be ensured, and the stability of the assembly of the accessory 1 and the host 2 can be improved.

[0094] Further, in an embodiment of the present invention, the abutting wall 31 includes one or a combination of at least two of a horizontal plane, a wavy surface, and an inclined surface.

[0095] See Figure 12 and Figure 13 , in an embodiment, the abutting wall 31 can be a horizontal plane, and the horizontal plane is a plane perpendicular to the first axis X1 or the second axis X2. Figure 12 FIG. is a schematic diagram of the elastic member 21 moving from the initial end to the end of the abutting wall 31 when the abutting wall 31 is a horizontal plane, Figure 13 FIG. is a schematic diagram of the elastic force F of the corresponding elastic member 21 with respect to the moving distance.

[0096] In this embodiment, during the process of rotating the accessory 1 relative to the host 2 from the initial assembly position to the target assembly position, the elastic member 21 is always continuously pressed against the abutting wall 31 from the initial assembly position, and the elastic force F of the elastic member 21 remains unchanged all the time. During the whole process of the user rotating the accessory 1, only when the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32, can the user feel the change of force tactilely and hear the click sound.

[0097] The elastic force F of the elastic member 21 can always be greater than 50% of the maximum elastic force Fmax, so as to further ensure that when the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32, a clearer first click sound can be generated to provide auditory feedback to the user.

[0098] See Figure 14 , in another embodiment, the abutting wall 31 is a continuous inclined surface.

[0099] In this embodiment, in this implementation manner, during the rotation of the accessory 1 relative to the host 2 from the initial assembly position to the target assembly position, the elastic member 21 is continuously pressed against the abutting wall 31 from the initial assembly position. During the entire process of the user rotating the accessory 1, the elastic force F of the elastic member 21 continuously increases when it reaches the end of the abutting wall 31, and then is released when it crosses the end of the abutting wall 31 and enters the positioning groove 32. During this process, the user can tactilely feel that the force has two obvious stages of change and can hear a clicking sound, providing an implementation manner with a different experience from the previous embodiment.

[0100] In other implementation manners provided by the present utility model, the abutting wall 31 can also be a combination of a horizontal plane and an inclined plane, a combination of a horizontal plane and a wavy plane, or other combinations, specifically as follows:

[0101] See Figure 3 、 15 and Figure 16 In yet another implementation manner, the abutting wall 31 includes a first abutting wall 311 and a second abutting wall 312. Specifically, the abutting wall 31 includes a horizontally arranged first abutting wall 311 and an inclinedly arranged second abutting wall 312. Figure 3 shows a three-dimensional structural schematic diagram of the accessory 1, Figure 15 shows a schematic diagram when the elastic member 21 moves from the initial end to the end of the abutting wall 31, Figure 16 shows the elastic member 21 based on Figure 15 a schematic diagram of the change of the elastic force F with respect to the distance.

[0102] In this implementation manner, during the rotation of the accessory 1 relative to the host 2 from the initial assembly position to the target assembly position, the elastic member 21 generates a continuous and constant elastic force F1 at the horizontally arranged first abutting wall 311; after entering the inclinedly arranged second abutting wall 312, a continuously increasing elastic force F2 is generated; then when crossing the end of the abutting wall 31 and entering the positioning groove 32, the elastic force F is released. During this process, the user can tactilely feel that the force has three stages of change and can hear a clicking sound, providing yet another implementation manner with a different experience.

[0103] See Figure 17 In yet another implementation manner, the abutting wall 31 can have multiple inclined surfaces, and when the accessory 1 is in the initial assembly position, the elastic member 21 does not interact with the abutting wall 31 in terms of force. When in the initial assembly position, the end of the elastic member 21 does not contact the abutting wall 31 or the end of the elastic member 21 only fits against the abutting wall 31, and at this time, the elastic member 21 is not stressed.

[0104] During the rotation of the accessory 1 from the initial assembly position to the target assembly position relative to the host 2, the elastic force F of the elastic member 21 can have four stages. The elastic member 21 has a process in which the elastic force is 0, and then the first inclined surface of the abutting wall 31 applies a force to the elastic member 21, and the elastic member 21 generates an increasingly elastic force F1 in the first stage. Then the second inclined surface of the abutting wall 31 applies a force to the elastic member 21, and the elastic member 21 generates an increasingly elastic force F2 in the second stage. Finally, when the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32, the elastic force F2 is released.

[0105] When the elastic member 21 abuts against the end of the abutting wall 31, the elastic force F of the elastic member 21 can be greater than 50% of the maximum elastic force Fmax. During the installation of the accessory 1, the user can tactilely feel the change of the force in four stages and can hear a click sound, that is, there is no elastic force in the first stage, the second stage provides a tactile feedback with a small increase in force, the third stage provides a tactile feedback with a large increase in force, and the fourth stage provides a tactile feedback with an instantaneous release of force and is accompanied by a click sound. In summary, the present embodiment provides another embodiment with different experience.

[0106] See Figure 18 , in another embodiment, the first abutting wall 311 can also be a wavy surface. When the accessory 1 is rotated from the initial assembly position to the target assembly position, the elastic member 21 moves along the first abutting wall 311, and the first elastic force F1 of the elastic member 21 can change periodically. That is, during the rotation process, the user can continuously feel a regular tactile oscillation change, such as a sense of jerk during the rotation process. And when the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32, the user feels the release of the force and is accompanied by an auditory feedback of a click sound, providing another embodiment with completely different experience.

[0107] In addition, in the above-mentioned multiple embodiments, when the elastic member 21 abuts against the abutting wall 31 and moves along the abutting wall 31, the instantaneous change amplitude of the elastic force F of the elastic member 21 is smaller than the instantaneous change amplitude when the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32.

[0108] Specifically, when the elastic member 21 abuts against the end of the abutting wall 31, the elastic force F of the elastic member 21 can reach the maximum. When the elastic member 21 enters the positioning groove 32, the elastic force F generated by the elastic member 21 can be the minimum elastic force F. In this way, more obvious auditory feedback and tactile feedback can be provided to the user.

[0109] Further, in an embodiment of the present utility model, a plurality of elastic members 21 are provided, and the plurality of elastic members 21 are arranged at uniform intervals around the first axis X1 or the second axis X2. In this embodiment, when the accessory 1 is assembled to the host 2, the first axis X1 of the accessory 1 coincides with the second axis X2 of the host 2, and both are the rotation axis X of the accessory 1.

[0110] In the specific embodiment provided by the present utility model, the second connecting portion 20 includes an elastic member 21, and the first connecting portion 30 includes an abutting wall 31 and a positioning groove 32. The elastic members 21 can be arranged at uniform intervals around the second axis X2 of the host 2.

[0111] The first connecting portion 30 may include a plurality of abutting walls 31 and positioning grooves 32 that correspond to the elastic members 21 one by one. The plurality of abutting walls 31 can be arranged at intervals around the first axis X1. During the rotation of the accessory 1, the elastic force F of each elastic member 21 is the same. The plurality of positioning grooves 32 can also be arranged at uniform intervals around the first axis X1. When the user rotates the accessory 1, each elastic member 21 abuts against the corresponding abutting wall 31 and simultaneously crosses the end of the corresponding abutting wall 31 and enters the corresponding positioning groove 32.

[0112] In this way, the elastic force F of the elastic members 21 is the same. During the process of the user rotating the accessory 1, the forces exerted by the plurality of elastic members 21 are balanced, and the resistance felt by the user is more uniform, providing a better user experience. And when the accessory 1 reaches the target assembly position, the elastic forces F of the plurality of elastic members 21 are released simultaneously, and a first clicking sound can be generated synchronously, that is, the user can receive more obvious auditory feedback and tactile feedback.

[0113] Further, in an embodiment of the present utility model, the positioning groove 32 has an inclined groove wall 321, and the slope of the groove wall 321 is 30° - 60°.

[0114] In this embodiment, the slope of the groove wall 321 can be the acute angle between the groove wall 321 and the horizontal plane.

[0115] The slope of the groove wall 321 is 30° - 60°. In this way, after the elastic member 21 crosses the end of the abutting wall 31 and enters the positioning groove 32, the movement time along the groove wall 321 of the positioning groove 32 is short, and the elastic force F of the elastic member 21 can be quickly released, so that the elastic member 21 can quickly collide with the bottom wall of the positioning groove 32 and emit a first clicking sound.

[0116] It should be emphasized that when the slope of the groove wall 321 is less than 30°, it means that the elastic member 21 will enter the groove wall 321 with less obvious fluctuations relative to the end after crossing the end of the abutting wall 31, which will cause the elastic member 21 to be in continuous contact with the groove wall 321 after crossing the end of the abutting wall 31, rather than a leap-forward release of force, that is, the user will only feel the continuous release and reduction of force, and cannot know the auditory feedback (first click) brought by the leap-forward release of force. In contrast, when the slope of the groove wall 321 is greater than 60°, it means that the elastic member 21 enters the groove wall 321 with more obvious fluctuations relative to the end after crossing the end of the abutting wall 31. When the user needs to unscrew it in the opposite direction, the steeper groove wall 321 brings poor unscrewing resistance to unscrewing, and even causes it to be unable to unscrew normally. Therefore, the slope of the groove wall 321 needs to be designed.

[0117] Furthermore, in one embodiment of the present invention, the slope of the second abutting wall 312 may be 30°-60°. Similar to the arrangement of the groove wall 321 , the slope of the second abutting wall 312 also needs to be designed.

[0118] In this embodiment, when the accessory 1 rotates from the target assembly position to the initial assembly position relative to the host 2, the elastic member 21 passes over the second abutting wall 312 and enters the first abutting wall 311, and the elastic force F of the elastic member 21 is at least partially released to generate a second click sound.

[0119] When the accessory 1 rotates from the target assembly position to the initial assembly position, the elastic member 21 first moves along the groove wall 321 of the positioning groove 32 toward the outside of the positioning groove 32, and the groove wall 321 of the positioning groove 32 applies pressure to the elastic member 21, and the elastic member 21 undergoes elastic deformation, generating an elastic force F. After the elastic member 21 enters the second abutting wall 312 from the positioning groove 32, the elastic force F of the elastic member 21 begins to be released. Since the slope of the second abutting wall 312 is 30°-60°, the elastic force F of the elastic member 21 can ensure rapid release, and the elastic member 21 can leap over the second abutting wall 312 to enter the first abutting wall 311, and collide with the first abutting wall 311, generating a second click sound.

[0120] It should be pointed out that the second click and the first click can be understood as two independent auditory feedbacks, which depend on the slope of the groove wall 321, the depth of the groove wall 321, the slope of the second abutting wall 312 and the depth of the second abutting wall 312. In other words, when the depth from the top of the groove wall 321 to the bottom of the groove wall 321 is greater than the depth from the top of the second abutting wall 312 to the bottom of the second abutting wall 312, the force with which the elastic member 21 collides with the first abutting wall 311 is relatively small, which makes it possible for the first click to have a more obvious auditory feedback than the second click, accompanied by a correspondingly more obvious tactile feedback.

[0121] Thus, when the user removes the accessory 1 from the host 2, another auditory feedback and tactile feedback are provided to the user.

[0122] Furthermore, continue to refer to Figures 3 to 11 , in an embodiment of the present invention, one of the first connecting portion 30 and the second connecting portion 20 includes at least two connecting ribs 33 arranged at intervals, and the other includes at least two connecting grooves 22. The interval between any two adjacent connecting grooves 22 forms an interval space 23. The interval space 23 is used to accommodate the connecting ribs 33 at the initial assembly position, and the connecting grooves 22 are used to cooperate with the connecting ribs 33 one by one at the target assembly position to limit the movement of the accessory 1 relative to the host 2 along the first axis X1.

[0123] In the specific embodiment provided by the present invention, the connecting ribs 33 are arranged on the first connecting portion 30, and the connecting grooves 22 are arranged on the second connecting portion 20.

[0124] When the user installs the accessory 1, first align the connecting ribs 33 of the accessory 1 with the interval space 23, and place the connecting ribs 33 in the interval space 23, that is, place the accessory 1 at the initial assembly position. Then rotate the accessory 1 along the first direction A. When the first click sound is heard, the accessory 1 reaches the target assembly position. At this time, the elastic member 21 enters the positioning groove 32, so as to limit the rotation of the accessory 1 relative to the host 2 around the first axis X1. At the same time, the connecting ribs 33 and the connecting grooves 22 are matched, and the connecting ribs 33 are inserted into the connecting grooves 22 to limit the movement of the accessory 1 relative to the host 2 along the first axis X1. It can be understood that at the target assembly position, the accessory 1 and the host 2 are relatively fixed, and the two are assembled, and the user can use the electronic device.

[0125] In this embodiment, there are multiple pairs of connecting ribs 33 and connecting grooves 22. The multiple connecting ribs 33 can be arranged at intervals around the first axis X1, and the multiple connecting grooves 22 can be arranged at intervals around the second axis X2. The number of the connecting ribs 33 and the connecting grooves 22 can be the same as the number of the elastic members 21. The multiple pairs of connecting ribs 33 and connecting grooves 22 can make the cooperation between the accessory 1 and the host 2 more stable.

[0126] Furthermore, in an embodiment of the present invention, the first connecting portion 30 has a first connecting cavity S1, the connecting ribs 33 are arranged on the side wall 36 of the first connecting cavity S1, and the abutting wall 31 is arranged on the bottom wall of the first connecting cavity S1. The second connecting portion 20 has a second connecting cavity S2, the connecting grooves 22 are arranged in the second connecting cavity S2, and at least a part of the elastic member 21 protrudes from the surface wall of the second connecting cavity S2.

[0127] In this embodiment, the first connecting portion 30 may be disposed on the accessory 1, and the second connecting portion 20 may be disposed on the host 2. The first connecting portion 30 may include a connecting rib 33 and a positioning groove 32, and the second connecting portion 20 may include a connecting groove 22 and an elastic member 21.

[0128] Both the first connecting cavity S1 and the second connecting cavity S2 are cylindrical cavities. The central axis of the first connecting cavity S1 forms a first axis X1, and the central axis of the second connecting cavity S2 forms a second axis X2. When the accessory 1 is assembled to the host 2, the first axis X1 and the second axis X2 coincide, and both are the rotation axis X when the accessory 1 rotates relative to the host 2.

[0129] See Figure 4 、 7 As shown in FIGS. 8 and 9, the outer surface of the side wall 36 of the first connecting portion 30 and the inner wall 201 of the second connecting cavity S2 are circular with matching dimensions. The connecting rib 33 is disposed inside the side wall 36 of the first connecting cavity S1, and the connecting rib 33 extends in an arc centered on the first axis X1. In this way, it is more convenient for the rotational cooperation between the first connecting portion 30 and the second connecting portion 20.

[0130] In a specific embodiment of the present application, the connecting rib 33 may be disposed inside the side wall 36 of the first connecting cavity S1 and near the open end 361. The connecting groove 22 is located inside the second connecting cavity S2. When the first connecting portion 30 cooperates with the second connecting portion 20, the first connecting portion 30 can be inserted into the second connecting cavity S2 of the second connecting portion 20. There is a gap 26 between the connecting groove 22 and the inner wall 201 of the second connecting cavity S2. The side wall 36 of the first connecting cavity S1 can be inserted into this gap 26, and both ends of this gap 26 have openings 261 that can communicate with adjacent spaced spaces 23 respectively. In this way, rotating the accessory 1 can achieve the cooperation or disengagement between the connecting groove 22 and the connecting rib 33.

[0131] In this embodiment, at least part of the bottom wall of the first connecting cavity S1 is formed by an abutting wall 31 and a positioning groove 32. When the accessory 1 is installed on the host 2, the first connecting portion 30 is inserted into the second connecting cavity S2, and the elastic member 21 can directly press against the abutting wall 31. At this time, the direction of the elastic force F of the elastic member 21 is parallel to the direction of the second axis X2. In this way, during the process of rotating the accessory 1 from the initial assembly position to the target assembly position, the cooperation between the connecting rib 33 and the connecting groove 22, as well as the cooperation between the elastic member 21 and the positioning groove 32 can be completed simultaneously, so that the accessory 1 can be fixed relative to the host 2 at the target assembly position.

[0132] Further, see Figure 7In one embodiment of the utility model, the second connection part 20 includes a convex block 24 formed in the second connection cavity S2, the convex block 24 includes a convex portion 25 arranged at intervals, and the connection groove 22 is arranged on the convex portion 25. Specifically, the connection groove 22 is formed on the free end of the convex portion 25 close to the bottom wall of the second connection cavity S2 and has a continuous opening in the direction toward the inner wall 201 of the second connection cavity S2. A gap 26 is formed between the circumferential surface 252 on the outer side of the convex portion 25 and the inner wall 201 of the second connection cavity S2, which is used to accommodate the side wall 36 of the first connection cavity S1.

[0133] In this embodiment, the protrusion 24 and the second connection cavity S2 can be integrally formed by an injection molding process, and the bottom wall of the second connection cavity S2 extends to the surface wall of the protrusion 24 to form a continuous surface.

[0134] The intervals between the protrusions 25 form an interval space 23, which is connected to the gap 26. The circumferential surface 252 of the protrusion 24 may include multiple arc surfaces centered on the second axis X2. When the accessory 1 is in the initial assembly position, the connecting rib 33 is placed in the interval space 23, and the opening 361 of the side wall 36 of the first connecting cavity S1 abuts against the bottom wall of the second connecting cavity S2. Figure 9 In the embodiment, the attachment 1 is rotated in the first direction A, the end portion 331 of the connecting rib 33 can be guided into the connecting groove 22, and the side wall 36 of the first connecting cavity S1 enters into the gap 26 of the second connecting cavity S2, thereby achieving matching.

[0135] See also Figure 19 In this embodiment, the elastic member 21 includes a spring 211 and a sleeve 212 sleeved on the spring 211, and the sleeve 212 has a spherical end.

[0136] Continue to see Figure 7 Each protrusion 25 may be provided with a through hole 251 for the elastic member 21 to pass through. The axis of the through hole 251 may be parallel to the first axis X1, and the sleeve 212 of the elastic member 21 may at least partially extend from the through hole 251 to abut against the abutting wall 31. One end of the spring 211 may be assembled in the assembly space inside the protrusion 24, and the other end abuts against the inner wall of the sleeve 212. The elastic member 21 may expand and contract along the axis direction of the through hole 251 when subjected to force.

[0137] The end of the sleeve 212 is spherical, and in a natural state without force, its hemispherical part is exposed outside the through hole 251. During the rotation of the accessory 1, the spherical end can abut against the abutment wall 31 or the groove wall 321, and has a better contact force direction, so that the sleeve 212 can be more smoothly extended and retracted in a direction parallel to the second axis X2, avoiding jamming, improving the tactile feeling of the user during rotation, and bringing a better user experience.

[0138] See alsoFigure 20 , in other embodiments provided by the present utility model, the elastic member 21 may also be an elastic metal member, and its end portion can be bent to form an arc-shaped end face. The arc-shaped end face can abut against the abutting wall 31 or the groove wall 321 when stressed, and slide along the rotation direction.

[0139] Further, referring to Figure 3 , in an embodiment of the present utility model, the positioning groove 32 is V-shaped. When the accessory 1 rotates from the initial assembly position to the target assembly position relative to the host 2 along the first direction A, the positioning groove 32 restricts the accessory 1 from rotating along the first direction A.

[0140] In this embodiment, when the elastic member 21 enters the positioning groove 32, the V-shaped side walls of the positioning groove 32 restrict the movement of the elastic member 21. If the user wants to further rotate the accessory 1, a certain force must be applied to overcome the elastic force F of the elastic member 21, causing the elastic member 21 to undergo elastic deformation. That is, the cooperation between the positioning groove 32 and the elastic member 21 can play a certain restrictive role in the rotation of the accessory 1 relative to the host 2, preventing the user from rotating the accessory 1 to an unexpected position.

[0141] Further, referring to Figure 3 and Figure 9 、 Figure 10 , in an embodiment of the present utility model, a limiting block 34 is provided at one end of the connecting rib 33. The limiting block 34 is used to prevent the accessory 1 from rotating along the first direction A after the accessory 1 rotates from the initial assembly position to the target assembly position relative to the host 2 along the first direction A.

[0142] In this embodiment, in the first direction A, the connecting rib 33 may have a port portion 331 and an opposite end. When the accessory 1 is in the initial assembly position, the port portion 331 of the connecting rib 33 can be adjacent to the corresponding connecting groove 22. The limiting block 34 is located at the end of the connecting rib 33. The limiting block 34 can also be provided on the side wall 36 of the first connecting cavity S1, and the limiting block 34 protrudes more towards the center of the first connecting cavity S1 relative to the connecting rib 33.

[0143] Figure 9 , when the accessory 1 is in the initial assembly position, both the connecting rib 33 and the limiting block 34 are located in the spaced space 23. Referring to Figure 10 , when the accessory 1 rotates from the initial assembly position to the target assembly position along the first direction A, the side wall of the limiting block 34 abuts against the side wall of the protruding portion 25. In this way, the accessory 1 can be restricted from further rotating relative to the host 2 along the first direction A, thereby preventing the user from continuously rotating when installing the accessory 1 to provide clear tactile feedback.

[0144] Further, in an embodiment of the present utility model, the accessory 1 may be provided with a first electrical connector 50, and the host 2 may be provided with a second electrical connector 27. After the accessory 1 is rotatably connected to the host 2, the accessory 1 and the host 2 can be paired through the above-mentioned first electrical connector 50 and second electrical connector 27. The first electrical connector 50 may be a first electrical contact, and the second electrical connector 27 may be a second electrical contact. Specifically, the first electrical contact 50 may be a metal solder joint on the pad of the circuit board 40, and the second electrical contact 27 may be a pin. When the accessory 1 is in the target assembly position, the first electrical contact 50 and the second electrical contact 27 are electrically connected, so that electric power or / and data signals can be transmitted between the host 2 and the accessory 1.

[0145] As follows, a detailed description of the first electrical connector 50 and the second electrical connector 27 of the electronic device provided by the present utility model is given:

[0146] In this embodiment, the accessory 1 includes at least two first electrical contacts 50. The host 2 includes at least two second electrical contacts 27 that are paired with the first electrical contacts 50 one by one. When the accessory 1 is in the target assembly position, each first electrical contact 50 contacts the second electrical contact 27 paired with it, so that electric power or / and data signals can be transmitted between the host 2 and the accessory 1.

[0147] During the process of the accessory 1 rotating from the initial assembly position to the target assembly position, the movement path of each first electrical contact 50 of the accessory 1 only passes through the second electrical contact 27 paired with it, and each second electrical contact 27 is located at the end of the movement path of the first electrical contact 50 paired with it to be electrically connected to the first electrical contact 50 in the target assembly position.

[0148] Among them, during the process of the accessory 1 rotating from the initial assembly position to the target assembly position, the movement path of each first electrical contact 50 can be an arc centered on the first axis X1, and the second electrical contact 27 paired with the first electrical contact 50 can be located at the end of the arc formed by its movement path. When the accessory 1 rotates to the target assembly position, the first electrical contact 50 moves to the position where it contacts the second electrical contact 27, realizing electrical connection with the second electrical contact 27.

[0149] Certainly, in this embodiment, the movement path of one of the first electrical contacts 50 can also be a dot, that is, this first electrical contact 50 is located on the first axis X1, the starting point and the ending point of its movement path coincide, and the other second electrical contact 27 paired with it is always in contact with and electrically connected to this first electrical contact 50.

[0150] In this embodiment, during the process of assembling or disassembling the accessory 1, the movement path of each first electrical contact 50 only passes through the second electrical contact 27 paired with it, and does not pass through other second electrical contacts 27. In this way, during the process of assembling the accessory 1, the unexpected connection between the first electrical contact 50 and the second electrical contact 27 can be avoided, thereby ensuring the correct transmission of electric power or / and data signals, and avoiding possible signal errors, abnormal prompts, etc.

[0151] Furthermore, in this embodiment, at least two first electrical contacts 50 are connected to the second electrical contacts 27 one by one to transmit different signals.

[0152] The electronic device may include at least 4 pairs of first electrical contacts 50 and second electrical contacts 27. Each pair of first electrical contacts 50 and second electrical contacts 27 is electrically connected to transmit a signal, such as an electric power signal, a ground signal, a connection detection signal, a temperature detection signal, etc.

[0153] It can be understood that in this embodiment, the signals transmitted by the multiple pairs of first electrical contacts 50 and second electrical contacts 27 are different. During the disassembly and assembly process of the accessory 1, each first electrical contact 50 is only connected to the second electrical contact 27 paired with it, and will not be connected to other second electrical contacts 27, which can ensure the correct transmission of electric power or / and data signals, thereby improving the operating stability of the electronic device and avoiding unexpected results caused by incorrect connections.

[0154] In an embodiment provided by the present utility model, the movement path formed when at least part of the first electrical contacts 50 rotate from the initial assembly position to the target assembly position is an arc, and the central angle of the arc is less than 90°.

[0155] See Figures 21 to 23 , which is a schematic diagram of the first electrical contact 50 and the second electrical contact 27 in three different embodiments provided by the present utility model. Among them, the solid line part represents the position schematic diagram of the first electrical contact 50 when the accessory 1 is in the initial assembly position, and the dotted line part represents the position schematic diagram of the first electrical contact 50 when the accessory 1 is in the target assembly position.

[0156] In one embodiment, the movement paths of at least part of the first electrical contacts 50 can be located on the same circle and do not intersect each other. A specific example is that if the accessory 1 has 5 first electrical contacts 50, among which, the movement paths of 2 first electrical contacts 50 can be arcs with the first axis X1 as the center and the same radius, and their movement paths do not intersect each other. In this way, the movement path of each first electrical contact 50 will only pass through the second electrical contact 27 paired with it, and will not pass through other second electrical contacts 27.

[0157] See Figure 22, in an embodiment provided by the present utility model, at least part of the movement path of the first electrical contact 50 is on circles with different radii.

[0158] In this embodiment, at least part of the movement paths of the first electrical contacts 50 are all arcs centered on the first axis X1, but the radii of the arcs formed by the movement paths of some of the first electrical contacts 50 are different. In this way, at least part of the movement paths of the first electrical contacts 50 will not intersect at all. Therefore, during the movement of the accessory 1, the first electrical contact 50 will only pass through the second electrical contact 27 paired with it, and will not pass through other second electrical contacts 27.

[0159] See Figure 23 , in another embodiment of the present utility model, one of the first electrical contacts 50 is on the first axis X1, and the other first electrical contacts 50 are on an arc centered on the first axis X1.

[0160] In this embodiment, all of the other first electrical contacts 50 may be on one circle centered on the first axis X1, or may be on multiple circles centered on the first axis X1 but with different radii, that is, the movement paths of the other first electrical contacts 50 are arcs centered on the first axis X1.

[0161] Similarly, one of the second electrical contacts 27 is on the second axis X2, and the other second electrical contacts 27 are all on an arc centered on the second axis X2.

[0162] When the accessory 1 is installed on the host 2, the first axis X1 coincides with the second axis X2 to form the rotation axis X of the accessory 1 relative to the host 2. The first electrical contact 50 located on the first axis X1 contacts the second electrical contact 27 located on the second axis X2, and during the rotation of the accessory 1, electrical contact is always maintained. After the accessory 1 rotates to the target assembly position, the other first electrical contacts 50 can be paired with the second electrical contacts 27 paired with them to achieve electrical contact.

[0163] Furthermore, in an embodiment of the present utility model, the first connecting portion 30 and the second connecting portion 20 are also provided with an orientation structure, and the orientation structure is used to limit the positional relationship of the accessory 1 relative to the host 2 during initial installation to ensure that the accessory 1 cooperates with the host 2 at the correct initial assembly position.

[0164] See Figure 8 and Figure 9 , as Figure 8 shown, the first connecting cavity S1 has a plurality of accommodating portions 35 that are respectively adapted to the protruding portions 25 at the initial assembly position. One of the plurality of accommodating portions 35 is an orientation accommodating portion, and the size and / or shape of the orientation accommodating portion are different from those of the other accommodating portions. The protruding portion 25 includes an orientation protruding portion that can only be adapted to the orientation accommodating portion.

[0165] In Figure 8 it, the cavity shape of the first connection cavity S1 of the attachment 1 generally adapts to the area size of the bump 24 during rotation; and it includes a receiving portion 35 that can adapt to the end contour dimensions of the protrusion 25 at the initial assembly position. When the attachment 1 is in the initial assembly position, multiple protrusions 25 are respectively placed in the corresponding receiving portions 35. It should be emphasized that in this embodiment, the receiving portions 35 that adapt to the end contour dimensions of the multiple protrusions 25 are adapted one by one, and the size and / or shape of at least one receiving portion 35 is different from that of other receiving portions 35. Only when the oriented protrusion is inserted into the corresponding oriented receiving portion, can the multiple protrusions 25 be all inserted into the corresponding receiving portions 35 one by one, so as to achieve the anti-fooling orientation effect.

[0166] Specifically, in Figure 8 it, the first connection cavity S1 has two receiving portions 35 with different sizes, specifically including a first receiving portion 351 and a second receiving portion 352. Among them, the opening contour of the first receiving portion 351 adapts to the end contour dimensions of one protrusion 25, and it has an arc-shaped opening dimension L1; correspondingly, the opening contour of the second receiving portion 352 adapts to the end contour dimensions of another protrusion 25, and it has an arc-shaped opening dimension L2, and L2≠L1.

[0167] Continuing to refer to Figure 9 , when the attachment 1 is docked with the host 2 at the correct initial assembly position, the protrusions 25 of the bump 24 can be respectively inserted into the first receiving portion 351 and the second receiving portion 352 of the first connection cavity S1. If in this state, the protrusion inserted into the first receiving portion 351 is named the first protrusion, and the protrusion inserted into the second receiving portion 352 is named the second protrusion, then it can be understood that the size and shape of the first receiving portion 351 are both adapted to the first protrusion, and the size and shape of the second receiving portion 352 are both adapted to the second protrusion. In this embodiment, either the first receiving portion 351 or the second receiving portion 352 can be regarded as an oriented receiving portion, and the protrusion adapted to it can be regarded as an oriented protrusion.

[0168] For further comparison, refer to Figure 11 , Figure 11 which shows a schematic diagram of the wrong docking of the attachment 1 relative to the host 2 in the 180° opposite direction. Due to the direction reversal and L2≠L1, this makes it impossible for the second protrusion to be smoothly inserted into the first receiving portion 351. In other words, the second protrusion 25 adapted to the second receiving portion 352 will not be able to be completely inserted into the first receiving portion 351 during wrong docking because the end contour dimensions of the second protrusion 25 are larger than the opening contour dimensions of the first receiving portion 351.

[0169] Specifically, the second protrusion may have a protruding portion 241. When the accessory 1 is wrongly docked with the host 2, the protruding portion 241 overlaps with the outer wall of the limiting block 34. It can be seen that by adapting the opening contour dimension of the accommodating portion 35 in the first connection cavity S1 to the end contour dimension of the protrusion 25, the anti-fooling effect can be achieved, thus ensuring that the accessory 1 is mated with the host 2 at the correct initial assembly position. Further, it avoids the failure of power or / and data signal transmission caused by the wrong docking of the first electrical connector 50 and the second electrical connector 27.

[0170] An embodiment of the present invention further provides an electrical contact connection method for an electronic device, which includes the following steps:

[0171] Place the accessory 1 at the initial assembly position where it can be detachably mated with the host 2;

[0172] Rotate the accessory 1 around the first axis X1 in the first direction A to the target assembly position, so that the first connection portion 30 is mated with the second connection portion 20 to assemble the accessory 1 on the host 2, and electrically connect each first electrical contact 50 and its paired second electrical contact 27;

[0173] Wherein, each first electrical contact 50 forms a movement path, and the movement path of each first electrical contact 50 only passes through its paired second electrical contact 27, and the second electrical contact 27 is located at the end of the movement path.

[0174] The electrical contact connection method of the electronic device in this embodiment can be used to connect the electronic device of any embodiment of the present application.

[0175] In this embodiment, during the installation of the accessory 1 on the host 2, each first electrical contact 50 will only be electrically connected to its paired second electrical contact 27, and will not be electrically connected to other second electrical contacts 27. Therefore, it can be avoided that the non-mutually paired first electrical contacts 50 and second electrical contacts 27 have no contact during the installation of the accessory 1, thus ensuring the correct transmission of power or / and data signals.

[0176] Hereinafter, a specific description will be given to the ultrasonic device provided by an embodiment of the present application.

[0177] As described above, the ultrasonic device includes a host 2 and an ultrasonic head. Refer to Figure 24 , in this embodiment, the ultrasonic head includes a housing 10, and a transducer 13 is installed in the housing 10. The housing 10 has a first connection portion 30 and a working surface (i.e., the outer side wall 112) for transmitting ultrasonic waves to the external environment.

[0178] In this embodiment, the ultrasonic head further includes a circuit board 40, which is installed in the housing 10. The circuit board 40 is electrically connected to the transducer 13. The circuit board 40 is also provided with a first electrical contact 50. The ultrasonic head can rotate about a first axis X1 between an initial assembly position and a target assembly position. At the initial assembly position, the first connecting portion 30 and the second connecting portion 20 are disengaged, and the ultrasonic head can be separated from the main body 2; at the target assembly position, the first connecting portion 30 cooperates with the second connecting portion 20 to limit the rotation of the ultrasonic head relative to the main body 2, so as to assemble the ultrasonic head to the main body 2 and make the first electrical contact 50 and the second electrical contact 27 electrically connected.

[0179] See Figure 6 and Figure 24 , in this embodiment, the ultrasonic device is a handheld device, and the main body 2 has a handle portion. The included angle between the length direction of the handle portion and the working surface (i.e., the outer side wall 112) of the ultrasonic head is 10°-40°. In this way, during use, it is more convenient to make the working surface fit the user's skin, so as to transmit ultrasonic waves to the user's skin, and it has a better holding and using experience.

[0180] See Figure 5 , in this embodiment, the ultrasonic device includes at least two different ultrasonic heads. The different ultrasonic heads have transducers 13 with different resonant frequencies. At least two different ultrasonic heads can be selectively assembled to the main body 2 to generate ultrasonic waves with different frequencies and output them.

[0181] In this way, one main body 2 can be matched with different ultrasonic heads. The user can select an ultrasonic head that can emit ultrasonic waves with different frequencies according to their own needs or the physical therapy site, etc., and install it on the main body 2, so as to meet various usage requirements.

[0182] In an embodiment of the present utility model, the ultrasonic head further includes a storage unit, and the configuration information of the accessory 1 is stored in the storage unit. The configuration information may include the resonant frequency information of the transducer 13.

[0183] An identification unit may also be provided in the main body 2, and the identification unit is used to obtain the resonant frequency information stored in the storage unit. Specifically, the resonant frequency information stored in the storage unit can be transmitted to the identification unit through the electrical connection between the first electrical contact 50 and the second electrical contact 27.

[0184] The main body 2 further includes a drive circuit, and the drive circuit is used to output a drive signal matching the resonant frequency information obtained by the identification unit.

[0185] Since the resonant frequencies of different ultrasonic heads are different. For example, during user operation, the ultrasonic head is replaced with one of a different resonant frequency, or during the manufacturing process of the ultrasonic head, the resonant frequency is different from the predetermined frequency due to manufacturing errors. If the host 2 continuously outputs a predetermined driving signal, the mismatch between the output driving signal and the resonant frequency of the ultrasonic head will result in low electroacoustic conversion efficiency and unstable output power of the ultrasonic head, and further cause the ultrasonic head to heat up, and may even cause burns to the user.

[0186] In this embodiment, a storage unit can be directly provided in the ultrasonic head. After the ultrasonic head is manufactured, a detection device is used to measure the actual resonant frequency of the ultrasonic head, and the actual resonant frequency of the ultrasonic head is stored in the storage unit. The electrical connection between the first electrical contact 50 and the second electrical contact 27 can also be used to transmit the configuration information in the storage unit. In this way, the host 2 can output a driving signal that matches the resonant frequency of the ultrasonic head, so that the ultrasonic head outputs ultrasonic waves at the optimal driving frequency, avoiding overheating of the device.

[0187] Furthermore, in an embodiment of the present invention, the configuration information further includes the serial number information of the accessory 1. In this embodiment, the serial number can be used for type identification. The ultrasonic head can have different types, such as a 1MHz circular ultrasonic treatment head and a 1.7MHz square treatment head. Different types of treatment heads have different applicable treatment plans, treatment sites, and treatment symptoms. Through the serial number in the storage unit, the host 2 can obtain the type of the ultrasonic head, so as to more accurately match the driving signal.

[0188] The following is a detailed description of the ultrasonic head provided in the first embodiment of the present invention.

[0189] See Figure 24 and Figure 25 , in this embodiment, the housing 10 has at least one opening 14, and a receiving space S3 is formed inside the housing 10. The transducer 13 is assembled in the receiving space S3, and the transducer 13 is used to generate ultrasonic waves. The circuit board 40 is at least partially located in the receiving space S3, and the circuit board 40 is electrically connected to the transducer 13.

[0190] In this embodiment, the circuit board 40 includes opposite first and second surfaces 41 and 42, and the first surface 41 includes an exposed portion that is exposed to the external environment through the opening 14. The ultrasonic head includes a plurality of first electrical connectors 50. Each of the plurality of first electrical connectors 50 has an electrical contact surface 51. The plurality of first electrical connectors 50 are disposed on the exposed portion. The electrical contact surface 51 of each of the plurality of first electrical connectors 50 is in the same plane as the exposed portion of the first surface 41, which makes the electrical contact surface 51 and the first surface 41 form a more unified and flat structure relatively, optimizes the spatial layout and provides more friendly cleaning and maintenance conditions.

[0191] In the specific embodiment provided by the present utility model, the housing 10 has an opening 14. Part or all of the first surface 41 of the circuit board 40 is placed at the opening 14 and is exposed to the external environment through the opening 14. Furthermore, the plurality of first electrical connectors 50 disposed on the first surface 41 of the circuit board 40 are exposed to the external environment through the opening 14, and the electrical contact surface 51 is in the same plane as the first surface 41. When the ultrasonic head is assembled to the main unit 2, the first electrical connector 50 cooperates with the second electrical connector 27 of the main unit 2.

[0192] In the specific embodiment, the first electrical connector 50 is a metal solder joint on the circuit board, and the second electrical connector 27 is a pin. The electrical contact surface 51 of the first electrical connector 50 contacts the end of the pin of the second electrical connector 27, so that the first electrical connector 50 is electrically connected to the second electrical connector 27. The electrical contact surfaces 51 of the plurality of first electrical connectors 50 are in the same plane, which facilitates the electrical connection between the first electrical connector 50 and the second electrical connector 27.

[0193] Furthermore, in this embodiment, the housing 10 includes a metal shell 11 and a packaging shell 12. The metal shell 11 has an inner side wall 111 and an outer side wall 112 opposite to the inner side wall 111. The packaging shell 12 encapsulates the metal shell 11 and forms an accommodation space S3, and the opening 14 is provided on the packaging shell 12. The inner side wall 111 of the metal shell 11 is fixedly connected to the transducer 13. The ultrasonic wave generated by the transducer 13 is transmitted from the inner side wall 111 to the outer side wall 112, and the outer side wall 112 serves as a working surface for contacting the human skin.

[0194] In this embodiment, the transducer 13 can be pasted on the inner side wall 111 of the metal shell 11, and the transducer 13 is in direct contact with the inner side wall 111 of the metal shell 11. The outer side wall 112 of the metal shell 11 can directly form the working surface. That is, when the user uses it, the outer side wall 112 of the metal shell 11 can be attached to the skin surface. Therefore, the ultrasonic wave generated by the transducer 13 can be directly transmitted from the inner side wall 111 of the metal shell 11 to the outer side wall 112, and the ultrasonic wave is output through the shortest path to reduce energy loss.

[0195] The space formed between the metal shell 11 and the encapsulation shell 12 is the accommodation space S3. Specifically, the accommodation space S3 can be formed inside the metal shell 11. The metal shell 11 has an open end opposite to the transducer 13, and the encapsulation shell 12 partially covers the open end of the metal shell 11. The circuit board 40 can be clamped between the metal shell 11 and the encapsulation shell 12 to ensure the stability of the installation of the circuit board 40. A sealing ring can be provided between the encapsulation shell 12 and the metal shell 11 to seal the connection gap therebetween, thereby ensuring the waterproof performance of the ultrasonic head.

[0196] In this embodiment, the housing 10 of the ultrasonic head further has a first connection portion 30, and the main body 2 has a second connection portion 20. The cooperation of the first connection portion 30 and the second connection portion 20 can mount the ultrasonic head on the main body 2 and enable the first electrical connector 50 to be electrically connected to the second electrical connector 27. The first connection portion 30 can be provided on the encapsulation shell 12.

[0197] Of course, referring to Figure 26 , in other embodiments provided by the present utility model, the first connection portion 30 may not be directly provided at the encapsulation shell 12, but may be additionally provided and can be connected to the shell formed by the metal shell 11 and the encapsulation shell 12. For the specific structures of the first connection portion 30 and the second connection portion 20, refer to any of the above embodiments, and details will not be described herein again.

[0198] Furthermore, in this embodiment, the ultrasonic head further includes an elastic conductive member 43 electrically connected to the circuit board 40. The free end of the elastic conductive member 43 abuts against the transducer 13 and undergoes elastic deformation to electrically connect the circuit board 40 and the transducer 13.

[0199] The elastic conductive member 43 can be fixedly installed on the circuit board 40. During the installation process, the transducer 13 can be first installed on the inner side wall 111 of the metal shell 11, and then the circuit board 40 can be installed. When the circuit board 40 is installed on the housing 10, the free end of the elastic member 21 abuts against the transducer 13 and undergoes elastic deformation, so that the transducer 13 and the circuit board 40 can be quickly electrically connected, and their electrical connection is relatively stable.

[0200] Furthermore, in this embodiment, the transducer 13 is a piezoelectric ceramic sheet, and the piezoelectric ceramic sheet is configured in a sheet shape. Specifically, the shape of the piezoelectric ceramic sheet can be adapted to the shape of the inner side wall 111 of the metal shell 11. Generally speaking, when the inner side wall 111 can be set to be circular, the corresponding piezoelectric ceramic sheet can be set to be a circular sheet with a certain thickness and a diameter slightly smaller than the inner side wall 111.

[0201] Further, in the present embodiment, the transducer 13 and the circuit board 40 are arranged relatively parallel, and one end of the elastic conductive member 43 is fixedly connected to the second surface 42 of the circuit board 40. The elastic conductive member 43 is perpendicular to the second surface 42 of the circuit board 40 and the transducer 13.

[0202] The elastic conductive member 43 is a columnar structure. The elastic conductive member 43 is perpendicular to both the second surface 42 of the circuit board 40 and the transducer 13, that is, the elastic force F direction of the elastic conductive member 43 is perpendicular to the second surface 42 and the transducer 13. Thus, the transducer 13 and the circuit board 40 can be quickly and stably electrically connected through the elastic conductive member 43.

[0203] Further, in the present embodiment, the housing 10 has a horizontal outer wall 121 extending outward along the wall 141 of the opening 14. Each electrical contact surface 51 is flush with the first surface 41. Here, the flushness can be understood as being basically flush with a reasonable tolerance, that is, there can be a reasonable assembly tolerance for the height difference between each electrical contact surface 51 and the first surface 41. For example, a reasonable assembly tolerance within 1 mm is recognized. The exposed portion of the first surface 41 of the circuit board 40 is flush with or lower than the outer wall 121. Here, the basic flushness can be understood as a range value with a preset height difference. Taking the horizontal plane of the first surface 41 as the reference plane, the electrical contact surface 51 can have a height fluctuation difference of ±1 mm relative to the horizontal plane of the first surface 41. At the same time, when the electrical contact surface 51 is arranged higher than the first surface 41, the outer edge contour of the electrical contact surface 51 can be chamfered. Based on the above, it can be ensured that there is a smooth electrical contact transition when the first electrical connector 50 and the second electrical connector 27 are rotationally connected. At the same time, the basic flush setting of the electrical contact surface 51 and the first surface 41 can further improve the convenience of the accessory 1 during cleaning.

[0204] See Figure 24 and Figure 26 In the shown embodiment, the first surface 41 of the circuit board 40 is lower than the outer wall 121.

[0205] See Figure 27 In the shown embodiment, the first surface 41 of the circuit board 40 is flush with the outer wall 121. Compared with Figure 24 and Figure 26 in the embodiment, the present embodiment provides a flatter surface that is easier to clean.

[0206] Specifically, the opening 14 is provided in the encapsulation shell 12. Therefore, the encapsulation shell 12 has a horizontal outer wall 121 extending outward along the wall 141 of the opening 14.

[0207] In the present embodiment, the outer wall 121 is perpendicular to the first axis X1 of the ultrasonic head and extends in a direction away from the opening 14. Each electrical contact surface 51 is substantially flush with the first surface 41 of the circuit board 40, that is, the electrical contact surface 51 can be completely flush with the first surface 41 of the circuit board 40, or can have a small height difference compared to the first surface 41 of the circuit board 40.

[0208] When the user uses the ultrasonic device, it is necessary to apply a coupling agent at the ultrasonic head. The electrical contact surface 51 is arranged to be flush with the first surface 41 of the circuit board 40 in the same plane, which is convenient for the user to clean the ultrasonic head when replacing the ultrasonic head, and does not affect the electrical connection effect between the first electrical connector 50 and the second electrical connector 27, and optimizes the spatial layout of the device.

[0209] Furthermore, in the present embodiment, a plurality of electrical contact surfaces 51 located in the same plane are arranged in an array, and the array arrangement includes one or any combination of a rectangular array, a circular array, and a path array.

[0210] It can be understood that in the present embodiment, a plurality of electrical contact surfaces 51 located in the same plane can be arranged in a rectangular array, a circular array, or a path array, or can be partially arranged in a rectangular array and partially arranged in a circular array, or can be arranged in other array arrangements.

[0211] As Figure 28 shown, it is a schematic diagram of a plurality of electrical contact surfaces 51 arranged in a path array, Figure 29 shown, it is a schematic diagram of a plurality of electrical contact surfaces 51 arranged in a rectangular array.

[0212] In the present embodiment, the arrangement of a plurality of electrical contact surfaces 51 located in the same plane can be the same as that in the foregoing embodiment, so that during the installation of the ultrasonic head, the movement path of each electrical contact surface 51 only passes through the corresponding second electrical connector 27 on the host 2 that is paired with it.

[0213] Furthermore, continue to refer to Figure 24 and Figure 25 , in the present embodiment, the ultrasonic head further includes a sealing ring 15 surrounding the periphery of the opening 14. The sealing ring 15 is placed between the wall of the housing 10 and the circuit board 40 to seal the gap between the housing 10 and the circuit board 40. At the same time, the through hole of the sealing ring 15 also exposes the exposed portions of the first electrical connector 50 and the first surface 41 to the external environment.

[0214] In the specific embodiment provided by the present utility model, the housing 10 is provided with a groove surrounding the opening 14 for accommodating the sealing ring 15. By providing the sealing ring 15, it is possible to prevent external water from entering the interior of the housing 10 through the opening 14 of the housing 10, thereby improving the waterproof performance of the ultrasonic head.

[0215] Further, in the present embodiment, the ultrasonic head further includes a temperature sensor 44. The temperature sensor 44 is disposed in the accommodation space S3 and is used to detect the temperature of the transducer 13. A controller may be provided in the main unit 2, and the temperature detected by the temperature sensor 44 can be transmitted to the controller of the main unit 2 through the first electrical connector 50 and the second electrical connector 27. The controller can adjust the drive output according to the temperature detected by the temperature sensor 44. For example, when the temperature sensor 44 detects that the temperature of the transducer 13 is higher than the preset temperature, the operation of the transducer 13 can be controlled to stop, preventing the ultrasonic head from overheating and burning the user.

[0216] See Figure 30 , the ultrasonic head of the second embodiment of the present utility model.

[0217] Compared with the ultrasonic head of the first embodiment, the main difference of the ultrasonic head of the present embodiment is that, in the present embodiment, the housing 10 has a plurality of openings 14 and has a horizontal outer wall 121 extending outward along the wall of the opening 14. The ultrasonic head has a plurality of first electrical connectors 50, and each of the plurality of first electrical connectors 50 is located in an opening 14 of the housing 10. Each first electrical connector 50 has an electrical contact surface 51, and the electrical contact surface 51 is used for electrical connection with the corresponding second electrical connector 27 of the main unit 2 when the ultrasonic head is mated with the main unit 2. The electrical contact surfaces 51 of each of the plurality of first electrical connectors 50 are flush with the outer wall 121, which makes the electrical contact surfaces 51 and the outer wall 121 form a more unified and flat structure relatively, optimizing the spatial layout and providing more friendly cleaning and maintenance conditions.

[0218] In the present embodiment, the bottoms of the plurality of first electrical connectors 50 are fixedly connected to the circuit board 40. When the circuit board 40 is installed in the housing 10, the plurality of first electrical connectors 50 are arranged in one-to-one correspondence with the plurality of openings 14. Each first electrical connector 50 is located at an opening 14, and the electrical contact surface 51 of each first electrical connector 50 is exposed to the external environment through the opening 14 so as to contact the corresponding second electrical connector 27 of the main unit 2 to achieve electrical connection.

[0219] In the present embodiment, the plurality of first electrical connectors 50 are arranged in one-to-one correspondence with the plurality of openings 14. The surface of the circuit board 40 is not exposed to the external environment through the openings 14, and only the plurality of first electrical connectors 50 are exposed to the external environment through the openings 14, so that the ultrasonic head can ensure good waterproof performance.

[0220] Further, in the present embodiment, the ultrasonic head further includes a plurality of sealing rings 15. The plurality of first electrical connectors 50 are arranged in one-to-one correspondence with the plurality of openings 14, and each sealing ring 15 fills the gap between the circumferential side surface of each first electrical connector 50 and the wall 141 of the corresponding opening 14.

[0221] In the present embodiment, the first electrical connector 50 may be a conductive columnar structure. Each first electrical connector 50 may be embedded in an opening 14 of the housing 10. The first electrical connector 50 has an electrical contact surface 51 and a circumferential side surface opposite to the wall of the opening 14. A sealing ring 15 is provided between the circumferential side surface of each first electrical connector 50 and the wall of the opening 14 to seal the gap between the first electrical connector 50 and the wall of the opening 14, preventing external stains from entering the accommodation space S3 of the housing 10 through the gap between the first electrical connector 50 and the wall of the opening 14, thereby ensuring that the ultrasonic head has a high waterproof level.

[0222] Furthermore, in the present embodiment, the sealing ring 15 is made of an insulating material formed by plastic, so as to improve the safety performance of the ultrasonic head while ensuring the sealing performance.

[0223] The plurality of first electrical connectors 50 may be arranged in an array. The specific arrangement manner of the plurality of first electrical connectors 50 may be the arrangement manner of the electrical contacts in any of the above embodiments, which will not be elaborated herein.

[0224] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment may also be appropriately combined to form other embodiments understandable to those skilled in the art.

[0225] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic head, characterized in that, Comprising: A housing having at least one opening and a receiving space formed therein; A transducer assembled in the receiving space for generating ultrasonic waves; A circuit board at least partially located in the receiving space, electrically connected to the transducer, the circuit board including opposite first and second surfaces, the first surface including an exposed portion exposed to the external environment through the opening; A plurality of first electrical connectors disposed on the exposed portion, each of the first electrical connectors having an electrical contact surface, the electrical contact surfaces of the plurality of first electrical connectors being in the same plane as the exposed portion of the first surface.

2. The ultrasonic head according to claim 1, wherein The housing includes: A metal shell having an inner side wall and an outer side wall opposite to the inner side wall, the inner side wall being fixedly connected to the transducer, and ultrasonic waves generated by the transducer being transmitted from the inner side wall to the outer side wall; A packaging shell encapsulating the metal shell to form the receiving space, the opening being provided in the packaging shell.

3. The ultrasonic head according to claim 1, characterized in that, An elastic conductive member electrically connected to the circuit board, the free end of the elastic conductive member abutting against the transducer and undergoing elastic deformation to electrically connect the circuit board and the transducer.

4. The ultrasonic head according to claim 3, characterized in that, The transducer is a piezoelectric ceramic sheet; the piezoelectric ceramic sheet is configured in a sheet shape.

5. The ultrasonic head according to claim 4, characterized in that, The transducer and the circuit board are arranged relatively parallel to each other, one end of the elastic conductive member being fixedly connected to the second surface, and the elastic conductive member being perpendicular to the second surface and the transducer.

6. The ultrasonic head according to claim 1, wherein, The housing has a horizontal outer surface wall extending outward along the wall of the opening, and the exposed portion of the first surface is flush with or lower than the outer surface wall.

7. The ultrasonic head according to any one of claims 1-6, characterized in that, The electrical contact surfaces in the same plane are arranged in an array, and the array arrangement includes one or any combination of a rectangular array, a circular array, and a path array.

8. The ultrasonic head according to claim 1, wherein, A sealing ring is further provided around the periphery of the opening, and the sealing ring is disposed between the wall of the housing and the circuit board to seal the gap between the housing and the circuit board.

9. The ultrasonic head according to claim 1, wherein, A temperature sensor is further provided in the receiving space for detecting the temperature of the transducer.

10. An ultrasonic head, characterized in that, Comprising: A housing having a plurality of openings and a horizontal outer surface wall extending outward along the walls of the openings; A plurality of first electrical connectors, each of the first electrical connectors being located in one of the openings of the housing, each of the first electrical connectors having an electrical contact surface for making electrical contact with a corresponding second electrical connector of the host when the ultrasonic head is mated with the host; A circuit board disposed in the housing and electrically connected to the plurality of first electrical connectors; A transducer disposed in the housing and electrically connected to the circuit board for generating ultrasonic waves; Wherein, the electrical contact surface of each of the plurality of first electrical connectors is flush with the outer surface wall.

11. The ultrasonic head according to claim 10, characterized in that, It further includes a plurality of sealing rings. The plurality of first electrical connectors are arranged in one-to-one correspondence with the plurality of openings, and each sealing ring fills the gap between the circumferential side surface of each first electrical connector and the wall of the corresponding opening.

12. The ultrasonic head according to claim 11, characterized in that, The sealing ring is made of an insulating material formed of plastic.

13. The ultrasonic head according to claim 10, characterized in that, The circuit board is electrically connected to the transducer through an elastic conductive member.

14. The ultrasonic head according to claim 10, characterized in that, The housing includes a metal shell and a packaging shell. The packaging shell encapsulates the metal shell to form an accommodation space for accommodating the circuit board and the transducer, and the opening is provided on the packaging shell; the transducer is disposed in a fitting manner on the inner wall of the metal shell.

15. The ultrasonic head according to any one of claims 10-14, characterized in that, The electrical contact surfaces are arranged in an array, and the array arrangement includes one or any combination of a rectangular array, a circular array, and a path array.

16. The ultrasonic head according to claim 10, characterized in that, The transducer is a piezoelectric ceramic sheet.

17. An ultrasonic device, characterized in that, It includes a main body and an ultrasonic head as described in any one of claims 1-16. The ultrasonic head is mounted on the main body. The housing has a first connection portion, and the main body includes a second connection portion for cooperating with the first connection portion and a second electrical connector for electrically connecting to the first electrical connector.

18. The ultrasonic device according to claim 17, characterized in that, The ultrasonic device includes at least two different ultrasonic heads. Different ultrasonic heads have transducers with different resonant frequencies, and at least two different ultrasonic heads can be selectively assembled on the main body to generate ultrasonic waves with different frequencies.

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