JP2000331658A - Connector, connecting device for linking connector, and electronic apparatus having the connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the general purpose usability and properly discharge a connector from a storage part by forming an engaged part to be engaged with the engagement part of a connecting device. SOLUTION: A connector 200 has an engaged recessed part 200a. Accordingly, even in the connector 20 having a large resisting force to discharge in the state stored in a storage part 2, the discharge of the connector 200 from the storage part 2 can be surely and properly performed while ensuring the general- purpose usability of the storage part 2 capable of storing both a battery and the connector 20 by providing a discharge mechanism having an engaging projection part 10b to be engaged with the engaged recessed part 200a in addition to a discharge spring 14. Further, in a connecting device 1, since an engagement projection part 10b for pressing the engaged recessed part 200a according to the unlocking operation of a lock lever 4 to the connector 200, the discharge of the connector 200 from the storage part 2 can be surely and properly performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device, a connecting device to which the connecting device is connected, and an electronic apparatus having the connecting device. In detail, a connector for supplying power to the connection device and transmitting and receiving signals to and from the connection device, a storage portion into which the connection device is inserted, and a storage portion side for signal transmission and reception formed in the storage portion Technology related to an electronic device including a connection device in which a terminal is connected to the connection device-side terminal to transmit and receive a signal and a connection device having a storage portion for selectively storing a battery and another connection device About the field.

[0002]

2. Description of the Related Art In general, in an electronic apparatus, for example, a video camera, a storage section for storing a battery (battery) is provided, and the video camera is driven by storing the battery in the storage section. It is possible.

[0003]

By the way, in recent years, the multifunctionality of the video camera has been advanced, and a connecting device having various functions in addition to the function as a battery can be stored in a storage portion of the battery. There is a video camera which is functionalized and has a versatility of a storage unit.

[0004] Examples of such a connector include a connector having an input / output terminal for transmitting and receiving signals between a video camera and a personal computer, and a connector for supplying A / C power. is there.

[0005] However, the above-mentioned connecting device for realizing a multi-functional video camera has terminals (contacts) for exhibiting various functions as compared with a connecting device having only a function as a battery (battery). Because we need to increase the number,
The surface pressure at the time of being stored in the storage unit becomes large, and when discharging from the storage unit, the large surface pressure acts as a load on the discharge and the discharge may not be performed properly.

Accordingly, in order to ensure proper discharge, the number of terminals must be limited. As a result, the functions to be added to the connecting device are limited, which hinders the multifunction of the video camera. I have.

Conventionally, the discharge of a battery or the like stored in a storage portion is performed only by a discharge spring which urges the battery or the like in the discharge direction. Although it is conceivable to increase the spring force of the spring, if the ejection force is increased by increasing the spring force of the ejection spring, the spring force will change due to aging, temperature change, and the like. There is a problem that it is difficult to secure the spring force.

[0008] Further, if the spring force of the discharging spring is increased, the load at the time of storing the battery in the storage section becomes large, causing a problem that the operability is reduced.

On the other hand, it is conceivable to provide a storage section dedicated to the above-mentioned connecting device having various functions in addition to the storage section for the battery. Cannot be secured.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems, to ensure the versatility of the storage section, and to properly discharge the connection tool from the storage section.

[0011]

According to the present invention, there is provided a connecting device in which an engaged portion to be engaged with an engaging portion of a connecting device is formed.

Therefore, in the connecting device of the present invention, the engaging portion is engaged with the engaged portion while the connecting device is connected to the connecting device.

Further, the connecting device of the present invention includes an engaging portion provided in the storage portion for engaging the engaged portion of the connecting device, and a locking device which is operated in the locking direction to lock the connecting device to the storing portion and to lock the connecting device in the locking direction. A lock lever that is operated in the opposite direction to apply a pressing force to the engaged concave portion in a direction of discharging the connecting device from the storage portion to the engaging portion, and a biasing device that urges the lock lever in a locking direction for locking the connecting device. There is provided a biasing spring and a discharging spring for biasing the connecting tool in a direction of discharging from the storage section.

Therefore, in the connecting device of the present invention, the lock lever is operated in the locking direction in a state where the engaging portion is engaged with the engaged portion of the connecting device to lock the connecting device, so that the storage portion is provided. The connecting device is stored, the lock lever is operated in the direction opposite to the locking direction, the lock on the connecting device is released, and the engaged portion is pressed by the engaging portion in the direction of discharging the connecting device from the storing portion. At the same time, the connection tool is pressed by the discharge spring in a direction in which the connection tool is discharged from the storage section, and the connection tool is discharged from the storage section.

Further, the electronic device of the present invention has a storage portion for selectively storing a battery and a connector having at least an output terminal and having an engaged recess formed therein, and a storage portion provided in the storage portion for engaging. An engaging protrusion movable between a position and a retracted position; a connecting member that is operated in the locking direction to lock the battery and the connector in the storage portion and is operated in the opposite direction to the locking direction to connect to the engaging protrusion. And a lock lever for applying a pressing force to the engaged concave portion in a direction in which is discharged from the storage portion.

Therefore, in the electronic device of the present invention, when the battery is stored in the storage section, the engaging projection is pressed by the battery and is retracted to the retracted position. The engaging portion engages with the engaged concave portion of the connecting device, and when the connecting device is ejected from the storage portion, the engaging projection presses the engaged concave portion by the lock lever to perform the discharging operation of the connecting device from the storing portion. Is done.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment described below, the electronic apparatus of the present invention is applied to a video camera, and the connecting device and the connecting device of the present invention are connected to the connecting device provided in the video camera and the connecting device, respectively. This is applied to the connection tool.

The video camera is provided with a connection device 1,
The connection device 1 is a battery (battery) 100 or a connection tool 2
The required members are arranged in a storage section 2 that can selectively store 00. The storage section 2 is opened and closed by a lid (not shown).

A lock lever 4 is rotatably supported on the outer surface of one of the side walls 3 forming the storage portion 2.

The lock lever 4 is provided so as to extend along the side wall 3, and a lock claw 4a having an inclined surface is formed at an end of the storage section 2 on the side of the insertion opening 2a. And
A support portion 3a protruding outward is formed on the side wall 3, and an intermediate portion of the lock lever 4 is rotatably supported by the support portion 3a to form a rotation fulcrum 4b. The end of the lock lever 4 opposite to the side on which the lock claw 4a is formed is formed as a pressing portion 4c.

The side wall 3 is provided with a support projection 5 projecting from the outer surface thereof, and a spring mounting piece 5a is formed at the tip of the support projection 5. One end of a leaf spring-like biasing spring 6 is attached to the spring mounting piece 5a, and the tip of the biasing spring 6 is attached to a portion between the lock claw 4a of the lock lever 4 and the rotation fulcrum 4b. Have been hit. Therefore, the lock spring 4 is urged by the urging spring 6 in the R1 direction (lock direction) shown in FIG. Is in contact with the leading edge of the side wall 3 so that the lock claw 4a projects inward from the insertion opening 2a (see FIG. 1).

The side wall 3 is provided with a spring hooking portion 7 and a spring supporting portion 8 which are protruded outward and adjacent to each other at a position on the back side of the storage portion 2. And, at the tip of the spring hook 7,
The coil portion of the torsion coil-shaped return spring 9 is inserted, and one end of the return spring 9 is supported by the spring support 8.

An arrangement hole 3b is formed between a portion of the side wall 3 where the support portion 3a is provided and a portion where the spring hook portion 7 is provided.

A discharge lever 10 is disposed in the arrangement hole 3b at a position near the support portion 3a, and the discharge lever 10 is rotatable. The discharge lever 10 has a substantially V-shape, and an intermediate portion is a rotation fulcrum 10a. The discharge lever 10 has one part formed as an engagement protrusion 10b with the rotation fulcrum 10a interposed therebetween, and the other part formed as an affected part 10c.

A rotation lever 11 is arranged in the arrangement hole 3b. The rotation lever 11 is formed at one end thereof with a rotation fulcrum coaxial with the rotation fulcrum 10a of the discharge lever 10.
An elastic contact portion 11a is formed at the other end of the rotary lever 11, and a pressed portion 11b is formed on the surface of the storage section 2 at a position between the rotational fulcrum and the elastic contact portion 11a. The other end of the return spring 9 supported by the spring hook 7 is elastically contacted with the contacted portion 11a, whereby the rotating lever 11 is urged in the S1 direction shown in FIG.

A coil portion of a torsion coil-shaped link spring 12 is inserted into a rotation shaft forming a rotation fulcrum 10 a of the ejection lever 10, and one end of the link spring 12 is engaged with the ejection lever 10. The other end portion is elastically contacted with a part of the other end of the rotating lever 11 while being elastically contacted with a part of the protruding portion 10b. Accordingly, the ejection lever 10 is urged by the link spring 12 in the direction P1 shown in FIG.
Are urged in the S1 direction shown in FIG. The link spring 12
The return spring 9 is formed as a spring having a weak force.

When no external force other than the return spring 9 and the link spring 12 is applied to the rotary lever 11, the pressed portion 11b is pressed by the spring force of the return spring 9 and the link spring 12. The inside of the side wall 3, that is,
It is located in the storage section 2 (see FIG. 1). In this state, the discharge lever 10 is in a state in which the distal end surface of the engaging projection 10b is positioned on substantially the same plane as the inner surface of the side wall 3 (retreat position), and does not protrude from the inner surface side of the side wall 3. (See FIG. 1). At this time, the pressing portion 4c of the lock lever 4 is separated from the operated portion 10c of the ejection lever 10 with a predetermined interval (see FIG. 1).

A coil-shaped discharge spring 14 is provided on the bottom wall 13 forming the storage section 2.

The operation of the connection device 1 will be described below.

The storage section 2 of the connection device 1 can selectively store the battery 100 and the connection tool 200,
The battery 100 and the connector 200 have the same outer shape and size, but the connector 200 has an engagement recess 200a unlike the battery 100 (see FIG. 4). The connector 200 has a function of transmitting and receiving signals between personal computers and the like and a function of supplying A / C power, in addition to a function as a battery. It is formed more than the battery 100.

First, the operation of storing the battery 100 in the storage section 2 and discharging it from the storage section 2 will be described (see FIGS. 1 to 3).

As described above, when the battery 100 is not inserted into the storage section 2, the lock claw 4a is positioned so as to protrude inward from the insertion port 2a, and the rotating lever 11 Pressed portion 11b by spring force
Is located in the storage section 2 and the ejection lever 10 is
0b is not protruded to the inner surface side of the side wall 3 and is in the retracted position, and the pressing portion 4c of the lock lever 4 and the operated portion 10c of the discharge lever 10 are separated from each other at a predetermined interval. (See FIG. 1).

When the battery 100 is inserted through the insertion opening 2a of the storage section 2, the leading edge of the battery 100 presses the inclined surface of the lock claw 4a of the lock lever 4, and the lock lever 4 is biased by the biasing spring 6 (See FIG. 2). Even when the lock lever 4 is rotated in the R2 direction by the insertion of the battery 100 into the storage section 2 and the pressing section 4c approaches the operated section 10c of the discharge lever 10, the pressing section 4c and the operated section 10c are appropriately adjusted. (See FIG. 2).

Further, as the battery 100 is inserted into the storage section 2, the leading edge of the battery 100 comes into contact with and presses the pressed section 11b of the rotating lever 11 projecting into the storage section 2. The rotating lever 11 is rotated in the S2 direction against the urging force of the return spring 9 (see FIG. 2). At this time, by the rotation of the rotation lever 11 in the S2 direction, a rotation power in the P1 direction (see FIG. 1) is applied to the ejection lever 10 via the link spring 12 but the engagement protrusion 10b of the ejection lever 10 Is slidably in contact with the side of the battery 100 that is inserted into the storage section 2, the rotation of the discharge lever 10 is restricted by the battery 100, and P
It is not rotated in one direction (see FIG. 2).

Further, when the battery 100 is inserted into the storage section 2, the discharging spring 14 is elastically contacted with one end surface of the battery 100, and the discharging spring 14 is compressed. Then, when the other end surface of the inserted battery 100 is positioned corresponding to the lock claw 4 a of the lock lever 4, the lock lever 4 is rotated in the R <b> 1 direction by the urging force of the urging spring 6 to lock the battery 100. The claw 4a is engaged, and the battery 100 is locked in the storage section 2, whereby the insertion of the battery 100 into the storage section 2 is completed (see FIG. 3).

When the battery 100 is locked by the lock lever 4, the lock lever 4 is rotated in the direction R 2, for example, manually to thereby lock the lock lever 4.
The lock on the battery 100 is released by the
0 is protruded from the storage section 2 to a predetermined position by the spring force F1 of the discharge spring 14 (see FIG. 3). In this state, the battery 100 is removed from the storage section 2 by grasping and pulling out the battery 100. I do.

Next, the operation of storing the connecting device 200 in the storage section 2 and discharging the connection tool 200 from the storage section 2 will be described (FIG. 1, FIG.
4 to 7).

The state before the connection tool 200 is inserted into the storage section 2 is the same as the case of the battery 100 (see FIG. 1).

When the connection tool 200 is inserted from the insertion opening 2a of the storage section 2, the leading edge of the connection tool 200 is
The lock lever 4 is rotated in the R2 direction against the urging force of the urging spring 6 (FIG. 4).
reference). When the lock lever 4 is rotated in the R2 direction by the insertion of the connection tool 200 into the storage section 2, the pressing section 4
c is moved so as to approach the operated portion 10c of the discharge lever 10 (see FIG. 4).

Further, when the connection tool 200 is inserted into the storage section 2, the leading edge of the connection tool 200 comes into contact with the pressed section 11 b of the rotating lever 11 that has protruded into the storage section 2 and presses it. Then, the rotating lever 11 is rotated in the S2 direction against the urging force of the return spring 9 (see FIG. 4). At this time, the rotation of the rotation lever 11 in the S2 direction causes the link spring 12 to rotate.
Is applied to the discharge lever 10 in the direction P1 (see FIG. 1).

When the connecting tool 200 is inserted to a predetermined position and the engaged concave portion 200a of the connecting tool 200 is positioned corresponding to the engaging projection 10b of the discharging lever 10, the discharging lever 10 is linked. The spring 12 is rotated in the direction P1 by the urging force of the spring 12 so that the engagement protrusion 10b is
0a and is engaged therewith (see FIG. 5).

Further, when the connecting tool 200 is inserted into the storage section 2, the discharging spring 14 is attached to one end face of the connecting tool 200.
Are elastically contacted, and the discharge spring 14 is compressed. And
When the other end surface of the inserted connecting tool 200 is positioned corresponding to the lock claw 4 a of the lock lever 4, the lock lever 4 is rotated in the R <b> 1 direction by the urging force of the urging spring 6 and locked to the connecting tool 200. The pawl 4a is engaged and the connector 2
00 is locked in the storage section 2, whereby the connecting device 200
Is completed in the storage section 2 (see FIG. 5).

As described above, since the link spring 12 and the return spring 9 are both weak springs, the battery 1
When inserting the connector 00 and the connector 200 into the storage section 2, there is no large load on the insertion.

When the insertion of the connector 200 into the storage portion 2 is completed, the pressing portion 4c of the lock lever 4 is brought into close or contact with the operated portion 10c of the ejection lever 10 (see FIG. 5). ). Further, as described above, since the number of contacts of the connection device 200 is larger than that of the battery 100, the connection device 200 is stored in the storage unit 2.
The contact pressure between the contact of the connection device 1 formed on the housing 2 is larger than that of the battery 100, and a greater resistance F2 to the discharge from the housing 2 than in the case of the battery 100 is generated (FIG. 5).

When the connecting device 200 is locked by the lock lever 4, the actuated portion 10 c of the discharge lever 10 is pressed by the pressing portion 4 c by rotating the lock lever 4 in the R2 direction, and A turning force in the direction P2 is applied (see FIG. 6), and the engagement recess 20 of the connecting device 200 is formed by the engagement protrusion 10b of the discharge lever 10.
0a is pressed. By rotating the lock lever 4 in the R2 direction, the lock by the lock lever 4 with respect to the connector 200 is released, and the pressing force F3 of the engaging projection 10b against the engaged concave portion 200a and the discharging spring 1
4, the connecting tool 200 is projected from the storage section 2 to a predetermined position by both of the spring force F1 (see FIG. 7). Complete the removal.

In order to properly discharge the connector 200 from the storage section 2, the spring force F1 of the discharging spring 14 and the pressing force F3 of the engaging projection 10b against the engaged recess 200a are required.
May be larger than the resistance force F2 generated in the connecting device 200.

As described above, since the engagement recessed portion 200a is formed in the connection device 200, the connection device 200 having a large resistance to discharge in the state of being stored in the storage section 2.
Also, in addition to the discharging spring 14, the engaged concave portion 200a
By providing a discharge mechanism having an engagement protrusion 10b that engages with the storage unit 2, connection from the storage unit 2 while securing the versatility of the storage unit 2 that both the battery 100 and the connector 200 can be stored in the storage unit 2 is ensured. The tool 200 can be properly discharged.

Further, in the connecting device 1, since the engaging projection 10 b that presses the engaged concave portion 200 a with the releasing operation of the lock of the lock lever 4 with respect to the connecting tool 200 is provided, The connector 200 can be reliably and appropriately discharged from the connector.

Further, by providing the connection device 1 having the engaging projections 10b in the video camera, the versatility of the storage section 2 can be ensured, the size of the video camera can be prevented, and the storage section 2 in the video camera can be prevented. The connector 200 can be reliably and appropriately discharged from the connector.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment of the present invention, and the present invention is not limited thereto. Should not be construed as limiting the technical scope of the present invention.

[0052]

As is apparent from the above description, the connecting device of the present invention is connected to a connecting device having an engaging portion, supplies power to the connecting device, and transmits and receives signals to and from the connecting device. Wherein the engaged portion engaged with the engaging portion of the connection device is formed.

Therefore, the engaged portion is engaged with the engaging portion when connected to the connecting device, and the function of the engaging portion can be imparted to the connector having the engaged portion.

According to the invention described in claim 2, the engaged portion is engaged with the engaging portion formed as a release operation projection for releasing the connection with the connection portion. Since the engagement concave portion is formed as the engaged concave portion which is pressed at the time of the disconnection operation of the release operation projection, it is possible to properly discharge the connection tool from the connection portion while securing the versatility of the connection portion.

Further, the connection device of the present invention has a storage portion into which a connector having an engaged portion and a connector-side terminal is inserted,
A connection device in which a storage unit side terminal for signal transmission and reception formed in the storage unit and the connector side terminal are connected to transmit and receive signals, wherein the connection unit is provided in the storage unit and engaged by the connection unit. An engagement portion that is engaged with the locking portion and is operated in the locking direction to lock the connection device to the storage portion, and is operated in a direction opposite to the locking direction to cause the engagement portion to discharge the connection device from the storage portion. A lock lever for applying a pressing force to the engagement concave portion, an urging spring for urging the lock lever in a locking direction for locking the connector, and a discharge spring for urging the connector in a direction to discharge the connector from the storage portion. The lock lever is operated in the locking direction in a state where the engagement portion is engaged with the engaged portion of the connection tool to lock the connection tool, so that the connection tool is stored in the storage portion, and the lock lever is provided. Is operated in the opposite direction to the locking direction to The hook is released and the engaged portion is pressed in the direction of discharging the connector from the storage portion by the engagement portion, and the connection device is pressed by the discharge spring in the direction of discharging the connector from the storage portion, and the connector is stored. It is characterized by being discharged from the section.

Therefore, even when a connector having a large resistance to discharge is inserted into the storage section, the connection tool can be reliably and properly discharged from the storage section.

Further, in the electronic device of the present invention, a storage portion for selectively storing a battery and a connector having at least an output terminal and having an engaged recess formed therein, and a storage portion provided in the storage portion. An engagement protrusion movable between an engagement position and a retracted position together with the engagement protrusion, which is operated in the locking direction to lock the battery and the connector in the storage portion and is operated in the opposite direction to the locking direction. A connection lever having a lock lever for applying a pressing force to the engaged concave portion in a direction in which the connection tool is discharged from the storage portion. When the battery is stored in the storage portion, the engagement protrusion is pressed by the battery. When the connector is retracted to the retracted position and the connector is stored in the storage portion, the engagement protrusion engages with the engaged concave portion of the connector, and when the connector is discharged from the storage portion, the engagement protrusion is covered by the lock lever. Discharge operation of the connector from the storage part by pressing the engagement recess Characterized in that so as to be made.

Therefore, the versatility of the storage section is ensured, the size of the electronic device can be prevented from being increased, and the connector can be reliably and properly discharged from the storage section in the electronic device.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention together with FIGS. 2 to 7, and is a plan view showing a connection device in which neither a battery nor a connection tool is inserted.

FIG. 2 is a plan view of the connection device showing a state in which a battery is being inserted into a storage unit.

FIG. 3 is a plan view of the connection device showing a state where the battery is locked in the storage unit.

FIG. 4 is a plan view of the connection device showing a state in which the connection tool is being inserted into the storage unit.

FIG. 5 is a plan view of the connection device showing a state where the connection tool is locked in the storage unit.

FIG. 6 is a plan view of the connection device showing a state immediately before the lock of the connection tool to the storage unit is released.

FIG. 7 is a plan view of the connection device showing a state in which the lock of the connection tool to the storage section is released and the engagement protrusion presses the engagement recess.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Connection apparatus, 2 ... Storage part, 4 ... Lock lever, 6 ... Urging spring, 10b ... Engagement protrusion (engagement part, release operation protrusion),
14 ... Discharge spring, 100 ... Battery, 200 ... Connector, 2
00a: engaged concave portion (engaged portion)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H100 AA11 BB05 BB06 DD00 DD03 DD04 5C022 AA11 AC21 AC73 AC78 5H020 AS06 AS15 CC06 CC25 CC34 DD06 DD17 DD18

Claims (4)

[Claims] 1. A connection tool connected to a connection device having an engagement portion, for supplying power to the connection device and transmitting and receiving signals to and from the connection device. A connector having a mated engaged portion. 2. The engaged portion is engaged with the engaging portion formed as a releasing operation projection for releasing the connection with the connecting portion, and is pressed when the releasing operation projection is disconnected. The connecting device according to claim 1, wherein the connecting device is formed as an engaged concave portion. 3. A storage portion into which a connector having an engaged portion and a connector side terminal is inserted, wherein a storage portion side terminal for signal transmission and reception formed in the storage portion and the connector side terminal. And a signal transmitting and receiving device. The connecting device is provided in the housing portion and is engaged with the engaged portion of the connecting device. The connecting device is operated in the locking direction to store the connecting device. And a lock lever that is operated in a direction opposite to the locking direction to apply a pressing force to the engaged concave portion in a direction in which the connector is ejected from the storage portion, and a lock direction that locks the connector. It has a biasing spring that biases the lock lever and a discharge spring that biases the connector in the direction of discharging the connector from the storage section, and locks when the engaging portion is engaged with the engaged portion of the connector. When the lever is operated in the locking direction to lock the connection device, The connector is stored, the lock lever is operated in the direction opposite to the locking direction, the lock on the connector is released, and the engaged portion is pressed and discharged in the direction of discharging the connector from the storage portion by the engaging portion. A connection device, wherein the connection tool is pressed by a spring in a direction in which the connection tool is discharged from the storage section, and the connection tool is discharged from the storage section. 4. A storage portion for selectively storing a battery and a connector having at least an output terminal and having an engaged recess formed therein, and a storage portion provided in the storage portion and having an engagement position and a retracted position. An engagement protrusion that can move between the lock and the battery, and the connector are operated in the locking direction to lock the battery and the connector in the storage portion, and are operated in a direction opposite to the locking direction to eject the connection tool from the storage portion to the engagement protrusion. A connection lever having a lock lever for applying a pressing force to the engaged concave portion in the direction. When the battery is stored in the storage portion, the engagement protrusion is pressed by the battery and retracted to the retracted position, and to the storage portion. When the connecting device is stored, the engaging protrusion engages with the engaged concave portion of the connecting device, and when the connecting device is discharged from the storing portion, the engaging protrusion presses the engaged concave portion by the lock lever, and the connecting device is used. The discharge operation from the storage section is performed. Electronic devices that.