CN213816399U - Electronic device - Google Patents

Abstract

The application mainly relates to an electronic device, including antenna module, drive assembly, switching subassembly and cable, drive assembly sets to and can drives antenna module and rotate, and the cable passes through switching subassembly and antenna module electric connection, and the switching subassembly includes electric connection's first adaptor and second adaptor each other, and first adaptor is connected with the antenna module, and the second adaptor is connected with the cable, and first adaptor sets to can follow antenna module and rotate for the second adaptor. The application provides an electronic device passes through the switching subassembly and realizes the electric connection between antenna module and the cable for the cable can keep relatively fixed motionless at antenna module pivoted in-process, and then avoids the cable to appear twisting absolutely, block bad problems such as dead antenna module effectively.

Description

Electronic device

Technical Field

The present application relates to the field of electronic devices, and more particularly, to an electronic apparatus.

Background

With the continuous popularization of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and people have higher and higher requirements for electronic devices.Fifth generation mobile communication technology (5)^thgeneration mobile network, abbreviated as 5G) is preferred by users due to its characteristics of high communication speed.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electronic device, including antenna module, drive assembly, switching subassembly and cable, drive assembly sets to and can drives antenna module and rotate, and the cable passes through switching subassembly and antenna module electric connection, and the switching subassembly includes electric connection's first adaptor and second adaptor each other, and first adaptor is connected with the antenna module, and the second adaptor is connected with the cable, and first adaptor sets to can follow the antenna module and rotate for the second adaptor.

The beneficial effect of this application is: the application provides an electronic device passes through the switching subassembly and realizes the electric connection between antenna module and the cable for the cable can keep relatively fixed motionless at antenna module pivoted in-process, and then avoids the cable to appear twisting absolutely, block bad problems such as dead antenna module effectively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a network system architecture provided in the present application;

FIG. 2 is a schematic diagram of an internal structure of the electronic device of FIG. 1;

FIG. 3 is a schematic structural diagram of an embodiment of a portion of the antenna module and the driving assembly of FIG. 2;

fig. 4 is a schematic diagram of an embodiment of the antenna heat sink of fig. 3;

FIG. 5 is an exploded view of one embodiment of the drive assembly of FIG. 3;

fig. 6 is a schematic top view of the antenna module shown in fig. 3;

FIG. 7 is a schematic cross-sectional view of an embodiment of the vibrating switch of FIG. 6 taken along direction VII-VII;

FIG. 8 is a schematic diagram of an embodiment of a reset circuit provided in the present application;

FIG. 9 is a schematic structural view of another embodiment of a stop assembly provided herein;

FIG. 10 is a schematic structural diagram of another embodiment of a portion of the antenna module and the driving assembly of FIG. 2;

fig. 11 is an exploded view of an embodiment of the antenna module of fig. 10;

FIG. 12 is an exploded view of one embodiment of the adapter assembly of FIG. 10;

FIG. 13 is a schematic cross-sectional view of an embodiment of the adapter assembly of FIG. 10 taken along the direction XIII-XIII.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a network system architecture provided in the present application.

In the present application, the electronic device 10 may be a device with a rotation function for operating at a preferred position/orientation. As an example, the electronic apparatus 10 may be a Customer Premise Equipment (CPE), which is commonly used for indoor/near field communication network switching, and may be a mobile signal access device that receives mobile signals and forwards the mobile signals as WiFi signals; the device can also be used for converting high-speed 4G or 5G signals into WiFi signals. Among them, with the development and spread of 5G, the electronic device 10 of CPE type is also popular with consumers. Referring to fig. 1, an electronic device 10 may be communicatively connected to a base station 20 to access a core network, so as to implement a network access function, and further convert a public network (WAN) of an operator into a home Local Area Network (LAN) of a user, and may support a plurality of terminal devices 30, such as a mobile phone, a tablet computer, a notebook computer, and a wearable device, to access the network.

Generally, the spectrum used by 5G mainly includes sub-6GHz and millimeter waves (30GHz to 300GHz), wherein millimeter waves can provide a bandwidth of 100M or more continuously and an extremely large data throughput. However, the millimeter wave has the advantages, and due to the high frequency and the short wavelength, the diffraction capability is weak, the penetration capability is weak, and the transmission distance is short; meanwhile, the transmission of millimeter waves is very easily affected by the environment, and the signal transmission is greatly interfered by rain and tree shielding. Therefore, the millimeter wave transmission requires the antenna of the electronic device 10 to be aligned with the base station 20 as much as possible, so that the electronic device 10 can transmit the uplink data to the base station 20 or receive the downlink data transmitted by the base station 20. In this regard, the millimeter-wave antenna of the electronic device 10 is generally configured to be rotatable.

Referring to fig. 2, fig. 2 is a schematic diagram of an internal structure of the electronic device in fig. 1 according to an embodiment. It should be noted that: compared with the electronic device shown in fig. 1, the electronic device shown in fig. 2 has a structure in which the housing assembly or a part thereof is hidden.

Referring to fig. 2 and fig. 1, the electronic device 10 may include a housing assembly 11, a main board assembly 12, an antenna module 13, and a driving assembly 14. The housing assembly 11 may include a housing (not explicitly distinguished in fig. 1), such as an outer housing, an inner housing, and the like, and may form a cavity structure. As an example, the outer shell may be used to define the appearance of the electronic device 10, and the inner shell may be fixed inside the outer shell, and may be used to fix the main board assembly 12, the antenna module 13, the driving assembly 14, and other structural components, that is, all of the above structural components may be fixed inside the housing assembly 11. Further, with reference to fig. 1, the housing assembly 11 may be provided with function keys such as a power key, a WPS key, a switch key, and the like, a socket such as a USB socket, a network cable socket, a power socket, and the like, and various types of indicator lights.

It should be noted that: the function keys can also be combined with various different control functions, namely, one key with multiple functions is realized; the patch socket may be designed according to actual use requirements, and is not limited herein. Further, since the electronic device 10 can convert signals such as 5G into WiFi signals, a corresponding socket may be further provided on the electronic device 10, so that a user can insert a SIM card, a Nano-SIM card, a Micro-SIM card, or other types of user identification cards into the electronic device 10 directly or by means of a corresponding card holder through the socket.

Referring to fig. 2, the main board assembly 12 may include a main circuit board 121 and a main board heat sink 122. With reference to fig. 1, the main circuit board 121 may be integrated with a circuit corresponding to the function key or a socket corresponding to the patch port, so that the electronic device 10 can perform corresponding functions. Further, the main board heat sink 122 may be attached to at least one side of the main circuit board 121 through one or a combination of assembling manners such as clamping, screwing, and the like, and a heat conductive silica gel may be filled between the two, so as to rapidly dissipate heat generated by the main circuit board 121. Illustratively, the motherboard heat sink 122 may be made of a material with a high thermal conductivity (e.g., copper or an alloy thereof, aluminum or an alloy thereof, etc.); and may have a plurality of spaced-apart heat-dissipating teeth to increase the heat-dissipating area of the main board heat-dissipating member 122. Certainly, a heat dissipation fan may be further disposed in the electronic device 10, and heat dissipation holes matched with the heat dissipation fan may be disposed on the housing assembly 11 to form air convection in the electronic device 10, so as to improve the heat dissipation requirement of the electronic device 10.

Based on the above description, for the electronic device 10 with 5G communication capability, the electromagnetic wave received or transmitted by the antenna module 13 may correspond to a millimeter wave, that is, the antenna module 13 may be a millimeter wave antenna. Further, the driving component 14 is configured to drive the antenna module 13 to rotate, so as to facilitate the antenna module 13 to rotate and scan, and further determine the optimal signal direction. The antenna module 13 and the driving component 14 can be electrically connected to the main circuit board 121. For example, the driving component 14 may be fixed on the heat sink 122, and the antenna module 13 may be fixed on the output shaft of the driving component 14, so that the antenna module 13 can rotate relative to other structural components of the electronic device 10 under the driving of the driving component 14, thereby achieving the above-mentioned rotational scanning.

It should be noted that: with the continuous update iteration of the communication technology, the electromagnetic waves received or transmitted by the antenna module 13 may correspond to other frequency bands with shorter wavelengths.

Further, referring to fig. 2, in addition to the antenna module 13, the electronic device 10 may further include a sub-6G antenna rf module 123, a WiFi antenna rf module 124, a 4G antenna rf module 125, and the like, which are electrically connected to the main circuit board 121, and together form an rf system of the electronic device 10. The sub-6G antenna radio frequency module 123 and the antenna module 13 may specifically form a 5G antenna radio frequency module; specifically, the sub-6G antenna rf module 123 may be configured to receive and transmit an antenna signal in a sub-6GHz band, and the antenna module 13 may be configured to receive and transmit an antenna signal in a millimeter wave band.

Illustratively, the sub-6G antenna rf module 123, the WiFi antenna rf module 124 and the 4G antenna rf module 125 may be sequentially disposed at intervals along the height direction of the electronic device 10, and may be assembled in the housing assembly 11, for example, fixed at corresponding positions on the inner housing and/or the outer housing. The 4G antenna rf module 125 is closer to the antenna module 13 than the sub-6G antenna rf module 123, that is, farther from the heat dissipation fan. Further, the sub-6G antenna rf module 123, the WiFi antenna rf module 124, and the 4G antenna rf module 125 may be disposed at intervals along the circumferential direction of the electronic device 10, so that the beam scanning range of each rf module can achieve 360 ° omnidirectional coverage on the horizontal plane. For example: the number of the sub-6G antenna radio frequency modules 123 is four, the sub-6G antenna radio frequency modules are uniformly distributed at intervals along the circumferential direction of the electronic device 10, and the geometric centers of the sub-6G antenna radio frequency modules are approximately flush with each other in the height direction of the electronic device 10; the number of the WiFi antenna radio frequency modules 124 is four, they are evenly distributed at intervals along the circumferential direction of the electronic device 10, and their geometric centers are approximately flush in the height direction of the electronic device 10; the number of the 4G antenna rf modules 125 is four, they are evenly spaced along the circumferential direction of the electronic device 10, and their geometric centers are approximately flush in the height direction of the electronic device 10.

Referring to fig. 3 to 5 together, fig. 3 is a schematic structural diagram of an embodiment of a portion of the antenna module and the driving element in fig. 2, fig. 4 is a schematic structural diagram of an embodiment of the antenna heat sink in fig. 3, and fig. 5 is an exploded structural diagram of an embodiment of the driving element in fig. 3. It should be noted that: the dashed arrows in fig. 5 are primarily intended to facilitate an illustration of one possible way of assembling the top shell with the middle shell, i.e., the assembly of the visible side of the top shell with the visible side of the middle shell in fig. 5.

Referring to fig. 4, the antenna module 13 may include an antenna heat sink 131, an antenna circuit board 132, and an antenna chip 133. The antenna circuit board 132 may be attached to one side of the antenna heat sink 131 by one or a combination of assembling methods such as clamping, screwing, and the like, and a heat conductive silica gel may be filled between the antenna circuit board and the antenna heat sink, so as to rapidly disperse heat generated by the antenna module 13. Further, the antenna chip 133 may be attached to a side of the antenna circuit board 132 away from the antenna heat sink 131, and the antenna chip 133 may also be integrated on the antenna circuit board 132, so as to receive and transmit antenna signals in a millimeter wave band. At this time, referring to fig. 3, the antenna heat sink 131 may be connected to the driving component 14, so that the driving component 14 drives the antenna module 13 to rotate.

As an example, in conjunction with fig. 4, the antenna heat sink 131 may include a body portion 1311 and a heat dissipation tooth 1312 that are integrally formed. The number of the heat dissipation teeth 1312 may be multiple, and may be uniformly spaced at one side of the body 1311 to increase the heat dissipation area of the antenna heat dissipation member 131. In addition, referring to fig. 6, the orthographic projections of the plurality of heat dissipation teeth 1312 may be fan-shaped to reduce the shielding therebetween, thereby increasing the heat dissipation area of the antenna heat dissipation member 131. Of course, the antenna heat dissipation member 131 may be made of a material having a high thermal conductivity (e.g., copper or an alloy thereof, aluminum or an alloy thereof, etc.) to increase the thermal conductivity of the antenna heat dissipation member 131. Further, a side of the main body 1311 facing away from the heat dissipation teeth 1312 may be disposed to be flat to facilitate attachment of the antenna circuit board 132. Based on this, a fixing portion 1313 may be further formed between the heat dissipation teeth 1312 and the body portion 1311 to facilitate connection of the antenna heat dissipation member 131 and the driving assembly 14.

Referring to fig. 5, the drive assembly 14 may include a housing assembly 141, a motor 142, a gear set 143, and an output shaft 144. The motor 142 is fixed in the housing assembly 141, and can drive the output shaft 144 to rotate relative to the housing assembly 141 through the gear set 143. Further, the output shaft 144 is connected to the antenna module 13, so as to drive the antenna module 13 to rotate. For example: when the antenna module 13 is assembled with the driving component 14, the output shaft 144 can extend into the fixing portion 1313 and can form a shaft hole fit.

Further, the driving assembly 14 may further include a driving circuit board 145 electrically connected to the motor 142, and the driving circuit board 145 is further electrically connected to the main circuit board 121 to control the power output of the motor 142. Of course, the motor 142 may also be directly electrically connected to the main circuit board 121.

As an example, in conjunction with fig. 5, the housing assembly 141 may include a lower housing 1411, a middle housing 1412 and an upper housing 1413, and the lower housing 1411 and the upper housing 1413 may be connected to two opposite sides of the middle housing 1412 by one or a combination of clamping, screwing and the like. With this arrangement, the housing assembly 141 can be divided into two relatively independent receiving cavities. Based on this, the driving circuit board 145 may be fixed to a side of the lower case 1411 adjacent to the middle case 1412, the motor 142 may be fixed to a side of the middle case 1412 adjacent to the lower case 1411, and the gear set 143 and the output shaft 144 may be fixed to a side of the middle case 1412 adjacent to the upper case 1413, so as to organically partition the respective structural members of the driving assembly 14. The output end of the motor 142 may be inserted through the middle housing 1412 to be connected to the gear set 143, and the output shaft 144 may be inserted through the upper housing 1413 to be connected to the antenna heat sink 131. Further, the lower case 1411 may be fixedly connected with the main board heat sink 122 to achieve the assembly of the driving assembly 14. Of course, in conjunction with fig. 3, the housing assembly 141 may further include a base 1414, and the lower housing 1411 is secured to the base 1414. The base 1414 may be fixedly connected to the motherboard heat sink 122, and the assembly of the driving assembly 14 may also be achieved.

Further, the driving assembly 14 may further include a bearing 146, and the bearing 146 may be a sliding bearing or a rolling bearing. Wherein, the inner ring of the bearing 146 can be sleeved on the output shaft 144, and the outer ring of the bearing 146 can be embedded in the upper shell 1413. So configured, the stability of the rotation of the output shaft 144 relative to the housing assembly 141 may be increased and wear reduced. Based on this, the upper housing 1413 may be provided with a mounting hole 14131 and a mounting groove 14132 surrounding the mounting hole 14131, so that when the driving assembly 14 is assembled, the outer ring of the bearing 146 may be embedded in the mounting groove 14132, and the output shaft 144 may also partially protrude out of the housing assembly 141 through the mounting hole 14131. The central axis of the mounting groove 14132 and the central axis of the mounting hole 14131 may coincide.

Illustratively, in connection with fig. 5, the gear set 143 may include a first gear 1431, a first gear 1432, a second gear 1433, a third gear 1434, and a second gear 1435, which are drivingly connected in that order. The first gear 1431 is connected to the output end of the motor 142, and the first gear 1431 and the output end of the motor 142 may also be an integrally formed structural member, so as to simplify a connection structure therebetween. The primary gear 1432 may include a primary large gear portion and a primary small gear portion fixed to each other, which are coaxially disposed and rotatably connected to the middle shell 1412; the first-stage large gear portion meshes with the first gear 1431. The secondary gear 1433 may include a secondary large gear portion and a secondary small gear portion fixed to each other, which are coaxially disposed and rotatably connected to the middle shell 1412; the second-stage large gear part and the first-stage small gear part are meshed with each other. The tertiary gear 1434 may include a tertiary large gear portion and a tertiary small gear portion fixed to each other, which are coaxially disposed and rotatably connected to the middle shell 1412; the third-stage large gear part is meshed with the second-stage small gear part. Further, a second gear 1435 is rotatably connected with the middle case 1412 and is engaged with a tertiary pinion gear portion of the tertiary gear 1434; the output shaft 144 is connected to the second gear 1435, which may be an integral structure to simplify the connection structure therebetween. The central axis of the output shaft 144 and the central axis of the second gear 1435 may coincide with each other. So set up, after the motor 142 starts, the output end of the motor 142 drives the first gear 1431 to rotate, and sequentially transmits the driving force to the second gear 1435 through the first gear 1432, the second gear 1433 and the third gear 1434, so as to drive the output shaft 144 to rotate, and further drive the antenna module 13 to rotate.

It should be noted that: the motor 142 may be a stepper motor, which may have a step angle of about 18 °; the total reduction ratio of the gear set 143 may be about 60, and the minimum step angle of the antenna module 13 may be up to 0.3 °. Obviously, this can improve the accuracy of positioning of the antenna module 13.

Based on the above detailed description, the driving component 14 can drive the antenna module 13 to perform 360 ° rotation scanning on the horizontal plane to determine the optimal signal direction. However, the antenna module 13 needs to supply electric energy when operating, and although the antenna module 13 and the main circuit board 121 can be directly electrically connected through a corresponding cable, the related art generally winds the cable around the driving component 14; however, the cable is easily overlapped and twisted together in the process of the driving component 14 driving the antenna module 13 to rotate and scan, and further the cable is twisted and broken, and the antenna module 13 is stuck. For this purpose, a limiting component 16 may be additionally provided, and the limiting component 16 may be provided in the driving component 14 to limit further power output of the driving component 14 after the rotation angle of the antenna module 13 reaches the angle threshold; the limiting component 16 may also be disposed on the path of the rotation of the antenna module 13 to limit the further rotation of the antenna module 13 after the rotation angle of the antenna module 13 reaches the angle threshold. Of course, the limiting component 16 can also limit further power output of the driving component 14 and further rotation of the antenna module 13 synchronously. The angle threshold may be 360 °, so that the driving antenna module 13 can perform 360 ° rotation scanning on the horizontal plane. So set up, through spacing subassembly 16 restriction antenna module 13 rotation in same direction to avoid antenna module 13 to twist absolutely above-mentioned cable, also can avoid antenna module 13 to be died by above-mentioned cable card to a certain extent.

Illustratively, in conjunction with fig. 5, the limiting assembly 16 may include a rotation angle limiting member 161 disposed within the driving assembly 14. The rotation angle limiting member 161 is configured to limit further power output of the driving assembly 14 after the rotation angle of the antenna module 13 reaches the angle threshold, that is, to stop further rotation of the output shaft 144, so as to stop further rotation of the antenna module 13.

Based on the above description, and with reference to fig. 5, the housing component 141 may be provided with a first circular arc-shaped limiting groove 14133 concentric with the output shaft 144, and the gear set 143 may be provided with a second circular arc-shaped limiting groove 14351 concentric with the output shaft 144. For example: the first circular arc-shaped limiting groove 14133 is arranged on the upper shell 1413 and is located on the same central axis with the mounting groove 14132; the second circular arc-shaped limit groove 14351 is disposed on the second gear 1535 and is located on the same central axis as the output shaft 144. Specifically, the first circular arc shaped retaining groove 14133 may surround the mounting groove 14132, and the second circular arc shaped retaining groove 14351 may surround the output shaft 144. Based on this, the second circular arc-shaped limiting groove 14351 and the first circular arc-shaped limiting groove 14133 are arranged to overlap each other, specifically, may be orthographic projections on the same reference plane, so as to form a circular arc-shaped moving space together. Further, the rotation angle limiting member 161 may be disposed in the first circular arc-shaped limiting groove 14133 and the second circular arc-shaped limiting groove 14351 in a penetrating manner, and may move along the first circular arc-shaped limiting groove 14133 and the second circular arc-shaped limiting groove 14351. In other words, the rotation angle limiting member 161 may be connected to the gear set 143.

It should be noted that: since the housing assembly 141 is fixed relatively when the motor 142 works, and the output shaft 144 and the second gear 1435 need to rotate to drive the antenna module 13, when the second gear 1435 rotates along a direction to form a stop with the rotation angle limiting member 161, the second gear 1435 drives the rotation angle limiting member 161 to continue to rotate along the direction to form a stop with the rotation angle limiting member 161 and the upper housing 1413. In other words, when the rotation angle limiting member 161 forms a stop together with the second gear 1435 and the upper housing 1413, the rotation angle limiting member 161 limits the further power output of the driving assembly 14. Based on this, in order to consider the rotation stop of the antenna module 13 and the 360 ° rotation scanning on the horizontal plane, the sum of the central angle subtended by the first circular arc-shaped limiting groove 14133 and the central angle subtended by the second circular arc-shaped limiting groove 14351 is greater than or equal to 360 °. The central angle of the first circular arc shaped stopper groove 14133 may be larger than the central angle of the second circular arc shaped stopper groove 14351.

The inventors of the present application found in long-term studies that: normally, a rotation angle detecting element such as a magnetic encoder is also provided to determine the rotation angle of the antenna module 13, so as to facilitate the driving assembly 14 to precisely control the rotation direction and the rotation angle of the antenna module 13. Moreover, because the rotation angle detecting element is provided, after the antenna module 13 rotates to a certain angle along one direction, the driving component 14 can also rotate reversely, so that the antenna module 13 can rotate along the other direction to determine the optimal signal direction. Therefore, the rotation of the antenna module 13 in the same direction is limited by the limiting component 16, so as to avoid the problems of twisting and breaking of the cable, jamming of the antenna module 13, and the like, and mainly avoid some abnormal situations such as detection errors, software errors, and the like. However, after the rotation angle of the antenna module 13 reaches the above angle threshold, the driving assembly 14 should stop the power output or reverse; if the above abnormal condition occurs, the driving component 14 may continuously try to drive the antenna module 13 in the wrong direction, so as to try to break through the rotation stop of the rotation angle limiting component 161, thereby generating (continuous) impact noise, which affects the user's experience of the electronic device 10. For this reason, the position limiting component 16 may further include a vibration switch 162, and the vibration switch 162 is configured to cut off the power supply of the driving component 14 in response to the vibration generated when the rotation angle limiting component 161 stops the antenna module 13, so as to stop the driving component 14, thereby preventing the electronic device 10 from generating the impact noise.

For example, referring to fig. 4 and 5, the vibration switch 162 may be disposed on the antenna module 13, so that the vibration switch 162 responds to the vibration generated when the rotation angle limiting member 161 stops the output shaft 144, and then cuts off the power of the motor 142. Further, the driving component 14 may be electrically connected to the power source through a corresponding power supply circuit; the vibration switch 162 may be coupled to the power supply circuit of the driving component 14 and configured to switch from an on state to an off state when the vibration is generated. In other words, under normal conditions, the vibration switch 162 can maintain the on state, and the power supply circuit can be powered on accordingly, so that the driving component 14 can drive the antenna module 13 to rotate; in an abnormal condition, the vibration switch 162 is switched to the off state by the vibration, and the power supply circuit may be powered off accordingly, so that the driving assembly 14 stops operating.

It should be noted that: the vibration switch 162 may not move along with the rotation of the antenna module 13, but may be disposed on a path along which the antenna module 13 rotates, and may be impacted by the antenna module 13 (or other structural members connected thereto) after the rotation angle of the antenna module 13 reaches the angle threshold, and may also trigger the vibration switch 162. Further, by changing the electrical connection relationship between the vibration switch 162 and the power supply circuit of the driving component 14, the vibration switch 162 can be set to switch from the off state to the on state when the vibration is generated.

Referring to fig. 6 and 7 together, fig. 6 is a schematic top view of the antenna module in fig. 3, and fig. 7 is a schematic cross-sectional view of an embodiment of the vibration switch in fig. 6 along direction VII-VII. It should be noted that: the direction indicated by the dashed double-headed arrow in fig. 6 can be regarded as the direction in which the driving element drives the antenna module to rotate.

Referring to fig. 7, the vibration switch 162 may include a fixed electrode 1621 and a floating electrode 1622. The fixed electrode 1621 and the antenna module 13 are fixed relatively, for example, the fixed electrode 1621 is fixed on the antenna Circuit Board 132 by means of pcba (printed Circuit Board assembly) process. Further, the floating electrode 1622 is in contact with the fixed electrode 1621 to form the on state, and is disposed to be separated from the fixed electrode 1621 by inertia when the vibration is generated, and is switched to the off state. For example: the floating electrode 1622 may be a spring, one end of which is relatively fixed to the fixed electrode 1621, and the other end of which is in a free state; the free end of the floating electrode 1622 is in contact with the fixed electrode 1621 and is separated from the fixed electrode 1621 by inertial oscillation when the above-described vibration is generated. Based on this, the fixed electrode 1621 and the floating electrode 1622 may be coupled to a power supply circuit of the driving assembly 14 to facilitate the vibration switch 162 to control the on/off of the power supply of the driving assembly 14.

Further, referring to fig. 7, the fixed electrode 1621 may have a cylindrical shape, one end of which may be closed and the other end of which may be opened. Based on this, the vibration switch 162 may further include a guide rod 1623 and an elastic member 1624 disposed within the fixed electrode 1621. With reference to fig. 6, the extending direction of the guide rod 1623 may be the same as the tangential direction of the rotation of the antenna module 13. Further, the floating electrode 1622 may be sleeved on the guide rod 1623, and may contact the closed end of the fixed electrode 1621 under the elastic action of the elastic member 1624 to form the above-mentioned conduction state. At this time, when the above-mentioned vibration is generated, the floating electrode 1622 is separated from the closed end of the fixed electrode 1621 by moving along the guide rod 1623 due to inertia, and the vibration switch 162 may be switched to the above-mentioned off state because the guide rod 1623 and the closed end of the fixed electrode 1621 may be disposed not to contact or the guide rod 1623 and the fixed electrode 1621 may be disposed to be electrically insulated from each other.

It should be noted that: the displacement generated when the floating electrode 1622 is separated from the fixed electrode 1621 may be reasonably designed according to actual use requirements, and is not limited herein. The smaller the displacement amount is, the higher the sensitivity of the vibration switch 162 to the vibration is. Further, in conjunction with fig. 7, the vibration switch 162 may further include a sealing member 1625, and the sealing member 1625 may be disposed inside the fixed electrode 1621 and may be located at an open end of the fixed electrode 1621, and may be used to seal the open end of the vibration switch 162 and fix the guide rod 1623. In this case, one end of the elastic member 1624 may abut against the floating electrode 1622, and the other end may abut against the sealing member 1625. Where the seal 1625 may be an insulator such as epoxy, the guide 1623 and/or the spring 1624 may be a conductor to facilitate coupling of the shock switch 162 to the power circuit of the drive assembly 14.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a reset circuit provided in the present application.

Based on the above detailed description, when the electronic device 10 generates the impact noise under the abnormal condition, the shock switch 162 may cut off the power supply of the driving component 14, so as to stop the driving component 14, thereby preventing the electronic device 10 from continuing to emit the impact noise. It is apparent that after the drive assembly 14 ceases to operate, it is necessary to restart the drive assembly 14 (or restart the electronic device 10) in order to continue using the electronic device 10. For this reason, in some embodiments, the user may restart the driving component 14 (or the electronic device 10) through a function key such as a power key or a restart key provided on the housing component 11. After the driving component 14 (or the electronic device 10) is restarted, the rotation position of the antenna module 13 may also be zeroed and corrected. Obviously, the above-mentioned restart process requires the participation of the user; when the user is inconvenient, even unwilling (e.g., winter cover in a quilt), the above-mentioned restarting may affect the user's experience of the electronic device 10. For this reason, based on the structural characteristic of the vibration switch 162, that is, the floating electrode 1622 contacts the fixed electrode 1621 again after the vibration disappears to switch the vibration switch 162 to the on state, the limiting assembly 16 may further include a reset circuit 163 coupled to the vibration switch 162, and the reset circuit 163 may be configured to control the driving control circuit 147 of the driving assembly 14 to reset when the vibration switch 162 is switched from the off state to the on state. In other words, the reset circuit 163 can achieve automatic reset of the driving component 14, thereby avoiding user intervention and improving user experience of the electronic device 10. The driving control circuit 147 may be integrated on the driving circuit board 145 and configured to control the motor 142 to drive the antenna module 13 to rotate.

As an example, in conjunction with fig. 8, the driving control circuit 147 may include a detection terminal (STATE), a first input terminal (SHDN), and a first output terminal (POWER _ CTL). The detection terminal may be mainly used to obtain a level change of a corresponding port in the reset circuit 163, so as to determine whether the shock switch 162 is in the on state or the off state. Further, the first input terminal may be mainly used to obtain a level change of a corresponding port in the reset circuit 163, so as to control the driving control circuit 147 to enter an operating state or an off state; the first output terminal may be mainly used for outputting different levels to the reset circuit 163 when the driving control circuit 147 enters the operating state or the off state.

As an example, in conjunction with fig. 8, the reset circuit 163 may include a first switch circuit 1631, a second switch circuit 1632, a third switch circuit 1633, and a flip-flop 1634. The flip-flop 1634 may include a second input terminal (S), a second output terminal (Q), a reset terminal (R), and a ground terminal (GND). Accordingly, the second input terminal is connected to the power supply circuit (Vin) of the driving module 14 via the vibration switch 162, so as to be set to a high level when the vibration switch 162 is in the on state, and to be set to a low level when the vibration switch 162 is in the off state. The vibration switch 162 is further connected to the detection terminal via a first switch circuit 1631 to set the detection terminal to a first state when the vibration switch 162 is in the on state and to set the detection terminal to a second state when the vibration switch 162 is in the off state. When the first state corresponds to a high level, the second level corresponds to a low level; conversely, when the first state corresponds to a low level, the second level corresponds to a high level. The reset terminal is connected to the first output terminal via a second switch circuit 1632, so that the reset terminal is set to a high level when the driving control circuit 147 is in the off state, and is set to a low level when the driving control circuit 147 is in the operating state; the driving control circuit 147 further controls the second switch circuit 1632 to set the reset terminal to a high level when detecting that the detection terminal is in the second state. The second output terminal is connected to the first input terminal through a third switch circuit 1633, so that the driving control circuit 147 is controlled to enter the operating state when the second input terminal and the reset terminal are both at a high level, and the driving control circuit 147 is controlled to enter the off state when the second input terminal is at a low level and the reset terminal is at a high level.

It should be noted that: referring to fig. 8, the switch S1 may be regarded as the vibration switch 162, and the current state of the switch S1 may be regarded as the vibration switch 162 being in the above-mentioned off state. Further, flip-flop 1634 may be a D-type flip-flop, and its other port may be grounded.

As an example, in conjunction with fig. 8, the first switching circuit 1631 may include a transistor Q1, a resistor R1, and a resistor R2. The base of the transistor Q1 may be connected to one end of the switch S1 through a resistor R1, the collector of the transistor Q1 may be connected to the power supply circuit (Vin) through a resistor R2, and the emitter of the transistor Q1 may be grounded. Further, the detection terminal can obtain the level change between the collector of the transistor Q1 and the resistor R2. When the vibration switch 162 is in the on state, the transistor Q1 is immediately turned on, and the detection terminal can be set to a low level accordingly; when the shock switch 162 is in the off state, the transistor Q1 is immediately turned off, and the detection terminal may be set to a high level. Further, a zener diode D1 may be connected in parallel between the collector and the emitter of the transistor Q1.

Illustratively, in conjunction with fig. 8, the second switching circuit 1632 may include a transistor Q2, a resistor R3, and a resistor R4. The base of the transistor Q2 may be connected to the second output terminal via a resistor R3, the collector of the transistor Q2 may be connected to the power supply circuit (Vin) via a resistor R4, and the emitter of the transistor Q2 may be grounded. Further, the first input terminal may obtain a level change between a collector of the transistor Q2 and the resistor R4. When the first input terminal is set to a low level, the driving control circuit 147 is set to enter the operating state, that is, the motor 142 can be powered on; when the first input terminal is set to a high level, the driving control circuit 147 is set to enter the off state, i.e., the motor 142 can be powered off.

Illustratively, in conjunction with fig. 8, the third switching circuit 1633 may include a transistor Q3 and a resistor R5. The base of the transistor Q3 may be connected to the first output terminal, the collector of the transistor Q3 may be connected to the power supply circuit (Vin) via a resistor R5, and the emitter of the transistor Q3 may be grounded. Further, the reset terminal may obtain a level change between a collector of the transistor Q3 and the resistor R5. When the driving control circuit 147 enters the above working state, the transistor Q3 is immediately turned on, and the reset terminal can be set to low level accordingly; when the drive control circuit 147 enters the off state, the transistor Q3 is turned off, and the reset terminal may be set high accordingly.

Based on the reset circuit shown in fig. 8, the following is a simple exemplary description of the circuit principle and its control procedure:

under normal conditions, the switch S1 is in the above conducting state, the second input terminal (S) and the reset terminal (R) of the flip-flop 1634 may both be at a high level, the second output terminal (Q) thereof is at a high level, so that the transistor Q2 is immediately turned on, the first input terminal (SHDN) of the driving control circuit 147 is at a low level, so that the driving control circuit 147 enters the above working state, that is, the motor 142 can be powered on; meanwhile, the transistor Q1 is turned on, so that the detection terminal (STATE) of the driving control circuit 147 can be at a low level, the first output terminal (POWER _ CTL) of the driving control circuit 147 is at a high level, so that the transistor Q3 is immediately turned on, and the reset terminal (R) of the flip-flop 1634 is finally at a low level.

In an abnormal situation, the switch S1 switches to the off state, and the second input (S) of the flip-flop 1634 may be at a low level; the transistor Q1 is then turned off, so that the detection terminal (STATE) of the driving control circuit 147 can be at a high level, and further the driving control circuit 147 enters the above-mentioned off STATE, that is, the motor 142 can be powered off, the first output terminal (POWER _ CTL) of the driving control circuit 147 is at a low level, so that the transistor Q3 is then turned off, and the reset terminal (R) of the flip-flop 1634 is at a high level.

In the case of automatic reset, the switch S1 switches to the conducting state again, the second input terminal (S) and the reset terminal (R) of the flip-flop 1634 may both be at high level, the second output terminal (Q) thereof is at high level, so that the transistor Q2 is immediately conducted, the first input terminal (SHDN) of the driving control circuit 147 is at low level, so that the driving control circuit 147 enters the operating state again, that is, the motor 142 can be powered on again.

Referring to fig. 9, fig. 9 is a schematic structural diagram of another embodiment of the limiting assembly provided in the present application.

The main differences from the above described embodiment are: in this embodiment, referring to fig. 9, the position limiting assembly 16 may further include an electromagnetic relay 164 coupled to the vibration switch 162, and the vibration switch 162 is coupled to a coil of the electromagnetic relay 164 to control the power of the driving assembly 14 to be turned on or off by controlling the coil of the electromagnetic relay 164 to be powered on or powered off.

As an example, in conjunction with fig. 9, the electromagnetic relay 164 is configured to turn on the power supply of the driving component 14 before the rotation angle of the antenna module 13 reaches the above-mentioned angle threshold, that is, the motor 142 can be energized; the shock switch 162 is configured to turn on the coil of the electromagnetic relay 164 when the shock is generated to attract the armature of the electromagnetic relay 164, thereby cutting off the power supply of the driving assembly 14, i.e., the motor 142 can be powered off to stop the operation.

It should be noted that: referring to fig. 9, the switch S1 may be regarded as the vibration switch 162, and the current state of the switch S1 may be regarded as the vibration switch 162 being in the off state.

Similar to the above embodiment is: the electronic device 10 may also be reset automatically after it stops operating in an abnormal situation, by means of a reset circuit similar or identical to that shown in fig. 8, to enable the electronic device 10 (or the driving assembly 14) to be reset automatically. Of course, the user may also restart the electronic device 10 (or the driving component 14) through a function key such as a power key or a restart key provided on the housing component 11.

Referring to fig. 10 to 13 together, fig. 10 is a schematic structural diagram of another embodiment of the antenna module and the driving element portion in fig. 2, fig. 11 is a schematic exploded structural diagram of an embodiment of the antenna module in fig. 10, fig. 12 is a schematic exploded structural diagram of an embodiment of the transfer element in fig. 10, and fig. 13 is a schematic sectional structural diagram of an embodiment of the transfer element in fig. 10 along a direction XIII-XIII. It should be noted that: the dashed arrows in fig. 12 are mainly used to illustrate one possible way of assembling the second housing and the second adaptor with the first housing, that is, the visible side of the second housing and the second adaptor in fig. 12 is assembled and matched with the visible side of the first housing.

The inventors of the present application found in long-term studies that: based on the above description, with reference to fig. 10 and fig. 2, although the antenna module 13 and the main circuit board 121 can be directly electrically connected through the cable 17, the cable 17 is generally wound around the driving component 14 in the related art; however, the cable 17 is easily overlapped and twisted together during the process of the driving component 14 driving the antenna module 13 to rotate and scan, and further the cable 17 is twisted off and locked to the antenna module 13, especially when the antenna module 13 continuously rotates forward and backward to determine the optimal signal direction. Therefore, when one end of the cable 17 is electrically connected to the main circuit board 121, an adapter 18 is additionally disposed between the other end of the cable 17 and the antenna module 13, so that the cable 17 is electrically connected to the antenna module 13 through the adapter 18.

The main differences from the above described embodiment are: in this embodiment, with reference to fig. 11, the antenna module 13 may further include an antenna support 134. Wherein, the antenna heat sink 131 can be fixed on the antenna bracket 134 through one or the combination of the assembling modes such as joint, threaded connection, etc., and the antenna circuit board 132 can also be attached to one side of the antenna heat sink 131 departing from the antenna bracket 134 through one or the combination of the assembling modes such as joint, threaded connection, etc., and heat-conducting silica gel can be filled between the two so as to rapidly disperse the heat generated by the antenna module 13. Of course, based on the stacked structure of the antenna module 13, the antenna circuit board 132 and the antenna heat sink 131 may be fixed to the antenna bracket 134 by the same fastener such as a screw, so as to simplify the structure of the antenna module 13. Correspondingly, the antenna chip 133 may be attached to a side of the antenna circuit board 132 away from the antenna heat sink 131, and the antenna chip 133 may also be integrated on the antenna circuit board 132, so as to receive and transmit antenna signals in the millimeter wave band. At this time, referring to fig. 10, the antenna bracket 134 may be connected to the driving component 14, so that the driving component 14 drives the antenna module 13 to rotate.

Further, in conjunction with fig. 11, the antenna mount 134 may include a beam 1341, a first arm 1342 and a second arm 1343 that are integrally connected. Wherein the beam 1341 is drivingly connected to the driving assembly 14 to enable the antenna support 134 to rotate. Further, a first arm 1342 is connected to one end of the cross beam 1341 in a bending manner, and a second arm 1343 is connected to the other end of the cross beam 1341 in a bending manner and extends in the same direction as the first arm 1342. In other words, the antenna bracket 134 may have a U-shaped structure. So set up, both can satisfy the equipment demand that antenna radiating element 131 fixes on antenna boom 134, can avoid antenna boom 134 to shelter from the radiating surface of antenna radiating element 131 again as far as possible.

As an example, in conjunction with fig. 12, the adapter assembly 18 may include a first adapter 181 and a second adapter 182 electrically connected to each other. The first adaptor 181 is connected to the antenna module 13, the second adaptor 182 is connected to the cable 17, and the first adaptor 181 is configured to rotate relative to the second adaptor 182 along with the antenna module 13. Based on the above description, since the antenna module 13 may be fixedly connected to the output shaft 144 of the driving assembly 14, the case assembly 141 of the driving assembly 14 may be fixedly connected to the main board heat sink 122, and the main board heat sink 122 may also be fixedly connected to the housing assembly 11, so that the first connector 181 may be fixedly connected to the antenna module 13 (specifically, the antenna bracket 134), and the second connector 182 may be fixedly connected to the housing assembly 11 (specifically, the inner housing). At this time, the antenna module 13 can drive the first adaptor 181 to rotate relative to the second adaptor 182 during the rotating scanning process. Obviously, in the process, the cable 17 can be kept relatively fixed with the housing assembly 11 due to the connection with the second adaptor 182, which eliminates the winding action in the related art, and further effectively avoids the above-mentioned problems of twisting off and jamming the antenna module 13.

It should be noted that: the cable 17 can be used as both a power supply line and a low-speed signal line, which is not very demanding on shielding. For example: the cable 17 is used for transmitting electric power required for the operation of the antenna module 13. For another example: the cable 17 is used to transmit control commands required for the operation of the drive assembly 14. When the cable 17 is used as the power line of the antenna module 13, although the wire diameter of the cable 17 is generally large, the application realizes the electrical connection between the antenna module 13 and the cable 17 and the main circuit board 121 through the adapter 18, and can also save the winding space in the related art.

Further, referring to fig. 13, an electrical contact surface formed by the first adaptor 181 and the second adaptor 182 may be perpendicular to an axis of the relative rotation between the first adaptor 181 and the second adaptor 182. Of course, in other embodiments, the electrical contact surface formed by the first adaptor 181 and the second adaptor 182 may also be parallel to the axis of the relative rotation between the first adaptor 181 and the second adaptor 182. The axis of relative rotation of the first adaptor 181 and the second adaptor 182 may coincide with the axis of the output shaft 144 of the drive assembly 14.

Illustratively, in conjunction with fig. 12, the adapter assembly 18 may further include a first housing 183 and a second housing 184. The first housing 183 is provided to be rotatable with respect to the second housing 184 following the antenna module 13. For example: the first housing 183 is fixedly connected to the antenna module 13 (specifically, the antenna bracket 134), and the second housing 184 is fixedly connected to the housing assembly 11 (specifically, the inner housing). Further, the first switch 181 may be fixed to the first housing 183 and may include two elastic electrodes (also designated as 181) spaced apart from each other; the second interposer 182 may be fixed to the second housing 184 and may include a first contact electrode 1821 and a second contact electrode 1822 spaced apart from each other. One of the elastic electrodes 181 may contact the first contact electrode 1821, and the other elastic electrode 181 may contact the second contact electrode 1821. Thus, the electrical connection between the first adaptor 181 and the second adaptor 182 can be realized. Based on this, the first adaptor 181 may be electrically connected to the antenna circuit board 132, the second adaptor 182 may be electrically connected to the cable 17, and the cable 17 may be electrically connected to the main circuit board 121, so as to achieve electrical connection between the antenna circuit board 132 and the main circuit board 121.

Further, the adapter assembly 18 may further include a bearing member 185, and the bearing member 185 may be a sliding bearing or a rolling bearing, for example. Wherein the first housing 183 may be connected to one of the inner and outer rings of the bearing member 185, and the second housing 184 may be connected to the other of the inner and outer rings of the bearing member 185. So configured, the stability of the rotation of the output shaft 144 relative to the housing assembly 141 may be increased and wear reduced. For example, referring to fig. 13, the first housing 183 may be fixedly connected to an inner ring of the bearing member 185, and the second housing 184 may be fixedly connected to an outer ring of the bearing member 185.

As an example, in connection with fig. 13, the elastic electrode 181 may include a cylindrical housing 1811, an elastic element 1812, and a contact electrode 1813. Wherein, one end of the cylindrical housing 1811 can be closed, and the other end can be opened, so as to install the elastic element 1812 and the contact electrode 1813; the cylindrical housing 1811 may be connected to the first housing 183, or both may be an integrally molded structure. Further, an elastic member 1812 is disposed in the cylindrical housing 1811, and a contact electrode 1813 may be disposed in the cylindrical housing 1811 and partially protrude out of the cylindrical housing 1811 under the elastic action of the elastic member 1812 to be in contact with the first contact electrode 1821 or the second contact electrode 1822, respectively. At this time, the open end of the cylindrical housing 1811 may be necked down so as to limit the protruding amount of the contact electrode 1813; the elastic element 1812 may be compressed so that the contact electrode 1813 maintains good contact with the first contact electrode 1821 or the second contact electrode 1822, respectively.

Illustratively, in conjunction with fig. 13 and 12, the second interposer 182 may further include a substrate 1823, and the first contact electrode 1821 and the second contact electrode 1822 may be disposed on the same side of the substrate 1823. The substrate 1823 may be connected to the second housing 184, or both may be an integrally formed structural member. Further, the first contact electrode 1821 may have a disk shape, the second contact electrode 1822 may have a ring shape, and the second contact electrode 1822 surrounds the first contact electrode 1821. The axis of the relative rotation between the first adaptor 181 and the second adaptor 182 may coincide with the central axis of the first contact electrode 1821; the relative rotation axes of the first adaptor 181 and the second adaptor 182 may coincide with the axis of the output shaft 144 of the driving assembly 14, so that the adaptor assembly 18, the antenna module 13, and the driving assembly 14 rotate around the same axis, thereby improving the coaxiality of the rotation process and increasing the stability of the rotation process.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. The utility model provides an electronic device, its characterized in that, electronic device includes antenna module, drive assembly, switching subassembly and cable, drive assembly sets up to drive antenna module rotates, the cable pass through switching subassembly with antenna module electric connection, switching subassembly includes electric connection's first adaptor and second adaptor each other, first adaptor with the antenna module is connected, the second adaptor with the cable is connected, first adaptor set up to follow the antenna module and for the second adaptor rotates.

2. The electronic device according to claim 1, wherein the electrical contact surface formed by the first adapter and the second adapter is perpendicular to an axis of relative rotation of the first adapter and the second adapter.

3. The electronic device of claim 2, wherein the adapter assembly further comprises a first housing and a second housing, the first housing is configured to rotate relative to the second housing following the antenna module, the first adapter is fixed on the first housing and comprises two elastic electrodes spaced apart from each other, the second adapter is fixed on the second housing and comprises a first contact electrode and a second contact electrode spaced apart from each other, one of the elastic electrodes is in contact with the first contact electrode, and the other of the elastic electrodes is in contact with the second contact electrode.

4. The electronic device of claim 3, further comprising a housing assembly and a main circuit board fixed in the housing assembly, wherein the driving assembly is fixed in the housing assembly, the cable is electrically connected to the main circuit board, the first housing is connected to the antenna module, and the second housing is connected to the housing assembly.

5. The electronic device according to claim 4, wherein the antenna module comprises an antenna bracket and an antenna circuit board connected to the antenna bracket, the antenna bracket is connected to the driving component, the first housing is connected to the antenna bracket, and the first adapter is electrically connected to the antenna circuit board.

6. The electronic device of claim 3, wherein the adapter assembly further comprises a bearing member, the first housing being coupled to one of the inner and outer races of the bearing member, and the second housing being coupled to the other of the inner and outer races of the bearing member.

7. The electronic device according to claim 3, wherein the elastic electrode includes a cylindrical case, an elastic member, and a contact electrode, the cylindrical case is connected to the first housing, the elastic member is disposed in the cylindrical case, and the contact electrode is disposed in the cylindrical case and partially protrudes out of the cylindrical case under an elastic action of the elastic member to be in contact with the first contact electrode or the second contact electrode, respectively.

8. The electronic device according to claim 3, wherein the second interposer further includes a substrate, the first contact electrode and the second contact electrode are disposed on the same side of the substrate, the first contact electrode is in a disk shape, the second contact electrode is in an annular shape, the second contact electrode surrounds the first contact electrode, and an axis of relative rotation of the first interposer and the second interposer coincides with a central axis of the first contact electrode.

9. The electronic device according to claim 1, wherein the driving assembly includes a housing assembly, a motor, a gear set and an output shaft, the motor is fixed in the housing assembly and drives the output shaft to rotate relative to the housing assembly through the gear set, and the output shaft is connected to the antenna module to drive the antenna module to rotate.

10. The electronic device of claim 9, further comprising a vibration switch disposed on the antenna module, wherein the driving assembly further comprises a rotation angle limiting member connected to the gear set, wherein the rotation angle limiting member is configured to stop further rotation of the output shaft after the rotation angle of the output shaft reaches an angle threshold, and wherein the vibration switch is configured to cut off power of the motor in response to a vibration generated when the rotation angle limiting member stops the output shaft.

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