CN110875544A

CN110875544A - Folding connector and terminal

Info

Publication number: CN110875544A
Application number: CN201811013850.XA
Authority: CN
Inventors: 栾夙
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2020-03-10
Anticipated expiration: 2038-08-31
Also published as: CN110875544B

Abstract

The invention discloses a folding connector and a terminal, wherein the folding connector comprises a connector support and a folding connector plug, the connector support is arranged on a circuit board, the circuit board is electrically connected with one surface of the folding connector plug, and the connector support surrounds the folding connector plug; the problem of the area of current connector is big is solved, and this embodiment still provides a terminal, and through implementing above-mentioned scheme, folding connector plug and the effectual area that reduces the connector of circuit board, the connector support surrounds folding connector plug, has guaranteed folding connector's stability and reliability.

Description

Folding connector and terminal

Technical Field

The present invention relates to the field of connectors, and more particularly, to a folding connector and a terminal.

Background

Along with the development of communication technology, the modularization of the part in the smart machine is gradual, correspondingly, the quantity that is used for the connector that connects each part also increases gradually, and according to the difference of each part, the size of the connector of connecting with it also is different, but present traditional connector is by female seat and plug cooperation, and the pad on the female seat transversely or vertically tiling makes the connector area big, leads to the big problem of the connector area on the mainboard especially outstanding.

Disclosure of Invention

The invention provides a folding connector and a terminal aiming at the technical problem that the area of the existing connector is large.

To solve the above technical problem, the present invention provides a folding connector, including:

a connector bracket, a foldable connector plug;

the connector bracket is arranged on the circuit board; the circuit board is electrically connected with one surface of the foldable connector plug; the connector holder encloses the foldable connector plug.

Alternatively, the foldable connector plug comprises a connector plug in a fully folded state or a connector plug in a semi-folded state.

Optionally, the electrically connecting the circuit board to one side of the foldable connector plug comprises:

the circuit board is provided with a welding disc which is matched with a pin on the connector plug to form electric connection.

Optionally, the foldable connector plug comprises a flexible material.

Optionally, the foldable connector plug includes a stiffener, and a foldable flexible circuit board; the reinforcing plate and the reinforcing plate are respectively arranged on two sides of the foldable flexible circuit board; the pins are arranged on the reinforcing plate.

Optionally, the folding connector further comprises: and the connector cover is buckled with the connector bracket.

Optionally, the connector cover includes a cover latching portion at one end, and the connector cover is engaged with the latching recess on the connector holder through the cover latching portion.

Optionally, the connector cover further comprises a rotation shaft located at an opposite end of the cover buckling part; the connector cover is rotated about the connector holder by the rotation shaft.

Optionally, when the connector cover is in the fastened state, the upper end positions of the connector cover and the connector bracket are on the same horizontal plane.

Furthermore, the invention also provides a terminal, and the terminal comprises the folding connector.

Advantageous effects

The invention provides a folding connector and a terminal, aiming at the problem of large area of the existing connector, the folding connector comprises a connector bracket and a folding connector plug; the connector bracket is arranged on the circuit board; the circuit board is electrically connected with one surface of the foldable connector plug; the connector bracket surrounds the foldable connector plug; namely, the folding connector is electrically connected with the main board through the folding connector plug and surrounds the folding connector plug through the connector bracket; the foldable connector plug and the circuit board effectively reduce the area of the connector, and meanwhile, the connector support can effectively and reliably comprise the foldable connector plug, so that the stability and the reliability of the foldable connector are guaranteed.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present invention;

FIG. 2 is a schematic view of a folding connector according to a first embodiment of the present invention;

FIG. 3-1 is a schematic view of a foldable connector plug provided in a first embodiment of the present invention in a fully folded state;

fig. 3-2 is a schematic view of a foldable connector plug provided in a first embodiment of the invention in a semi-folded state;

FIG. 4 is a wiring diagram of a fully extended foldable connector plug provided in accordance with a first embodiment of the present invention;

fig. 5 is a schematic view illustrating a cover of a connector according to a first embodiment of the present invention in a fastened state;

fig. 6 is a schematic view of a connector cover according to a first embodiment of the present invention in an open state;

FIG. 7-1 is a schematic illustration of a cut-away section line of a cut-away folding connector according to a second embodiment of the present invention;

fig. 7-2 is a cross-sectional view of a folding connector according to the cross-sectional line of fig. 7-1 according to a second embodiment of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), and TDD-LTE (Time Division duplex-Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

Based on the above-mentioned mobile terminal hardware structure, various embodiments of the folding connector of the present invention for connecting elements in a mobile terminal are proposed.

First embodiment

In order to solve the problem of large area of the existing connector, the present embodiment provides a folding connector, as shown in fig. 2, which includes a connector holder 201 and a folding connector plug 202; wherein the connector holder 201 is arranged on a circuit board 203, the circuit board 203 is electrically connected with one side of the foldable connector plug 202, and the connector holder 201 surrounds the foldable connector plug 202; that is, the connector holder 201 in this embodiment isolates the foldable connector plug 202 from other devices on the circuit board 203, and the connector holder 201 can also protect the foldable connector plug 202; of course, the connector holder 201 in this embodiment may be fixed on the circuit board 203 by means of a patch welding method. In some embodiments, the connector holder 201 may also have a shielding function. It should be noted that the connector holder 201 in the present embodiment may be a regular shape or an irregular shape, and is not limited herein.

It should be understood that the foldable connector insert 202 of the present embodiment includes, but is not limited to, a flexible material, i.e., having a soft or pliable nature, and being folded without breaking the material properties, so the foldable connector insert 202 enclosed by the connector holder 201 of the present embodiment may be a connector insert in a fully folded state, as shown in fig. 3-1; or may be a connector plug in a semi-folded state as shown in fig. 3-2. Since the foldable connector plug 202 in this embodiment is in a folded state, the foldable connector plug 202 is in a regular state, such as a rectangular parallelepiped, in which the circuit board 203 is electrically connected to one side of the foldable connector plug 202, specifically, a pad is disposed on the circuit board 203 corresponding to the region surrounded by the connector bracket 201, and the pad is matched with the pin on the foldable connector plug 202 to form an electrical connection. It should be noted that no matter what folding state the foldable connector plug 202 is, the electrical connection between the foldable connector plug 202 and the circuit board 203 is not affected. For ease of understanding, the present embodiment describes the routing of the foldable connector plug 202, and as shown in fig. 4, fig. 4 is a routing diagram of the fully unfolded foldable connector plug, which includes pins 401 corresponding to the circuit board 203, a folding line 402, and a folding portion of the wires 403, and when the connector plug is in a folded state, the folding line is folded left and right along the folding line 402.

It is noted that, since the connector plug made of flexible material is easy to fold, in order to ensure that the pins of the foldable connector plug 202 are accurately matched with the pads on the circuit board 203, as shown in fig. 3-1, the foldable connector plug 202 of the present embodiment includes a reinforcing plate 301, a reinforcing plate 302, and a foldable flexible circuit board 303; the reinforcing plate 301 and the reinforcing plate 302 are respectively arranged on two sides of the foldable flexible circuit board 303, wherein the reinforcing plate 301 is fixed above the foldable flexible circuit board 303, and the reinforcing plate 301 mainly solves the flexibility of the flexible circuit board, improves the strength of a splicing part and facilitates the integral assembly of a product; the reinforcing plate 302 is fixed below the foldable flexible circuit board 303, and the reinforcing plate 302 is used for reinforcing the hardness of the flexible circuit board and protecting the flexible circuit board; it should be noted that the pins of the foldable connector plug 202 in this embodiment are disposed on the stiffener 301. In this embodiment, the reinforcing plate 302 and the reinforcing plate 301 may be fixed on both sides of the foldable flexible circuit board 303 by pressing or attaching.

As shown in fig. 5, fig. 5 is a schematic view illustrating a snap-fit state of a connector cover; as shown in fig. 6, fig. 6 is a schematic view of the connector cover being open, and the pads on the circuit board are 601. The folding connector in this embodiment further includes a connector cover 501, the connector cover 501 is fastened to the connector holder 201, for the convenience of fastening, the connector cover 501 includes a cover fastening portion 5011 at one end, and the connector cover 501 is matched with a fastening groove 2011 on the connector holder 201 through the cover fastening portion 5011 to fasten. Of course, in order to facilitate the removal and installation of the foldable connector plug 203, the connector cover 501 in this embodiment further includes a rotating shaft 5012 at the opposite end of the cover fastening part 5011, the rotating shaft 5012 is installed with a groove at the inner side of the connector bracket 201, the groove corresponds to the shape of the rotating shaft 5012 and is slightly larger than the width of the rotating shaft 5012, so that the connector cover 501 rotates around the connector bracket 201 through the rotating shaft 5012, so that the connector cover 501 can be rotated to conveniently insert the foldable connector plug 202, although the connector cover 501 in this embodiment can also play a role of protecting the foldable connector plug 202, and of course, when the connector cover 501 is in the fastened state, the upper ends of the connector cover 501 and the connector bracket 201 are at the same level. For example, the connector holder 201 in this embodiment is a hollow rectangular parallelepiped, and the connector cover 501 is "T" shaped, so that the connector cover 501 is easily engaged with the connector holder 201.

The embodiment provides a folding connector, including the fixed connector bracket that sets up on the circuit board, the folding connector plug of being connected with the circuit board electricity, and be used for with the connector cover of connector bracket lock, and the connector bracket is surrounding folding connector plug, keep apart folding connector plug through the connector bracket, folding connector plug is for current connector plug, the area that occupies the terminal has been reduced, and connector cover and connector bracket cooperation realize the lock, folding connector's stability and reliability have been guaranteed.

Second embodiment

The present embodiment provides a terminal comprising at least one folding connector, as shown in fig. 7-1 and 7-2, fig. 7-2 is a cross-sectional view of the folding connector, fig. 7-1 is a schematic diagram of a cross-sectional cut corresponding to the cross-sectional view of the folding connector, the cross-sectional cut is indicated by reference numeral 706, that is, the folding connector is cut along the cross-sectional cut 706, so as to obtain the cross-sectional view of the folding connector shown in fig. 7-2, the folding connector comprises a connector holder 701, a connector cover 702 and a folding connector plug 703; the connector bracket 701 is fixed on a circuit board, the foldable connector plug 703 is electrically connected with the circuit board 704, specifically, a pad 705 on the circuit board 704 is matched with a pin on the foldable connector plug 703 to form electrical connection, and the connector cover 702 is buckled with the connector bracket 701; the foldable connector plug 703 comprises a reinforcing plate, a reinforcing plate and a foldable flexible circuit board, and the foldable connector plug 703 can be integrally formed, wherein the reinforcing plate mainly solves the flexibility of the flexible circuit board, improves the strength of a splicing part, and facilitates the integral assembly of a product; the reinforcing plate is fixed below the foldable flexible circuit board and used for reinforcing the hardness of the flexible circuit board and protecting the flexible circuit board; in this embodiment, the foldable connector plug 703 is in a fully folded state, and therefore the foldable connector plug 703 provided in this embodiment occupies a small area of the terminal compared to the existing connector.

In order to facilitate the insertion of the foldable connector plug 703, the connector cover 702 in this embodiment is a "T" shaped structure, the connector cover 702 can be opened, and at a "one" end of the "T" structure, the connector cover 702 includes a cover fastening portion, such as a circular protrusion, which corresponds to the fastening groove on the front surface of the connector holder 701, that is, the connector cover 702 is matched with the fastening groove on the connector holder 701 through the cover fastening portion to protect the connector cover 702 and the foldable connector plug 703 surrounded by the connector holder 701; of course, the connector cover 702 in this embodiment includes a rotation shaft at the "1" end, which is installed with a groove inside the connector holder 701, which corresponds to the shape of the rotation shaft and is slightly larger than the width of the rotation shaft, so that the connector cover 702 is rotated around the connector holder 701 by the rotation shaft. Of course, in some embodiments, the connector cover 702 may also be a rectangular parallelepiped, including a rotation axis at the central axis of the rectangular parallelepiped, through which the connector cover 702 rotates about the connector holder 701, in which case the connector cover 702 does not require a snap-fit portion. Of course, in order to more accurately engage the connector cover 702 with the connector holder 701, in this embodiment, the connector cover 702 and the connector holder 701 are located on the same horizontal plane when the connector cover 702 is in the engaged state.

Thus, after the connector is assembled, the connector cover 702 is opened, and the foldable connector plug 703 can be folded directly over the circuit board 704 pads, and then the connector cover 702 is snapped in place. In addition, when the connector is subsequently disassembled, the user can directly pull the foldable connector plug 703 by hand to disassemble the connector, so that the convenience of disassembling the connector is realized.

This embodiment provides a terminal, this terminal includes folding connector, this folding connector is including the fixed connector support that sets up on the circuit board, the folding connector plug of being connected with the circuit board electricity, and be used for the connector lid with connector support lock, and connector support is surrounding folding connector plug, keep apart folding connector plug through connector support, folding connector plug is for current connector plug, the area that occupies the terminal has been reduced, and connector lid and connector support cooperation realize the lock, folding connector's stability and reliability have been guaranteed.

Note that, in order not to be redundant in description, the first embodiment is not fully described in the present embodiment, and it should be clear that all the examples in the first embodiment are applicable to the present embodiment.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A folding connector, characterized in that the folding connector comprises a connector holder, a folding connector plug;

the connector bracket is arranged on the circuit board; the circuit board is electrically connected with one surface of the foldable connector plug; the connector bracket surrounds the collapsible connector plug.

2. A folding connector according to claim 1, wherein said foldable connector plug comprises a connector plug in a fully folded state or a connector plug in a semi-folded state.

3. The folding connector of claim 1, wherein said circuit board electrically connecting to a face of said folding connector plug comprises:

and the circuit board is provided with a welding disc, and the welding disc is matched with the pin on the connector plug to form electric connection.

4. A folding connector of claim 1, wherein said folding connector plug comprises a flexible material.

5. A folding connector of claim 4, wherein said foldable connector plug comprises a stiffener, and a foldable flexible circuit board; the reinforcing plate and the reinforcing plate are respectively arranged on two sides of the foldable flexible circuit board; the pins are arranged on the reinforcing plate.

6. The folding connector of any of claims 1-5, further comprising: a connector cover that is snap-fitted with the connector bracket.

7. The folding connector of claim 6, wherein said connector cover includes a cover snap at one end, said connector cover engaging said snap groove on said connector holder via said cover snap.

8. The folding connector of claim 7, wherein said connector cover further comprises a pivot shaft located at an opposite end of said cover snap; the connector cover is rotated around the connector holder by the rotation shaft.

9. The folding connector of claim 8, wherein the connector cover is positioned at the same level as the upper end of the connector holder when the connector cover is in the fastened state.

10. A terminal comprising a folding connector according to any one of claims 1-9.