JP4473194B2 - Recording media drive device - Google Patents

Description

  The present invention relates to a recording medium driving device, and more particularly to a recording medium driving device in which two types of recording media having different external dimensions are connected by a user's manual operation.

  Conventionally, a recording medium on which various data has been recorded is manually inserted and held in a holder, and this holder is automatically transported into the housing by a transport mechanism. A recording medium driving device is known in which a movable connector and a fixed connector disposed in a housing are connected (see, for example, Patent Document 1). Here, two types of recording media of different sizes (normal size and mini size) are used as the recording media, and the depth of the holder is set based on the recording media with the shorter length. . The movable side connector is common to both the normal size and the mini size, and each consists of a plurality of clip-shaped female terminals arranged at a predetermined pitch. The fixed-side connector has a plurality of pin-shaped male terminals as female terminals. Consists of the same pitch. Further, the transport mechanism includes a reduction gear train that rotates using a motor as a drive source, and a rack that meshes with a final gear of the reduction gear train, and this rack is fixed to a side surface of the holder.

In the recording medium driving device schematically configured as described above, when the user manually inserts one of two types of large and small recording media into the holder, the mini-sized recording medium slightly protrudes from the front surface of the housing. The normal size recording medium is held by the holder in a state of largely protruding from the front surface of the housing. After that, when the motor rotates in one direction, the holder moves linearly toward the back of the housing by the transport mechanism using the motor as a driving source, and when the holder moves to the mounting position in the housing, The fixed connector is inserted into the movable connector, and the recording medium is connected to the connector in a state of being mounted in the apparatus. At this mounting position, the mini-size recording medium is completely accommodated in the housing, and the normal-size recording medium is slightly protruded from the front surface of the housing. In addition, when the motor rotates in the opposite direction to the above with the recording medium mounted, the holder moves linearly from the mounting position toward the front of the housing, and accordingly, the movable connector comes out of the fixed connector. After being disconnected, the recording medium is automatically conveyed to the initial position where it can be ejected.
Japanese Patent Laying-Open No. 2004-348812 (page 5-7, FIG. 4)

  In the conventional recording medium driving device described above, the recording medium held by the holder is automatically conveyed by a conveyance mechanism using a motor as a driving source, and the movable side connector of the recording medium is moved relative to the fixed side connector using the conveyance force. Therefore, the connector can be connected in a state where two types of large and small recording media are housed in the housing. However, if the torque of the motor that is the drive source of the transport mechanism is insufficient, the movable side connector and the fixed side connector cannot be reliably connected / released, so a high torque motor must be used. As a result, various problems occur, such as an increase in cost and high mechanical strength required for each mechanism structure including the transport mechanism.

  If the holder is fixed at a predetermined position in the housing, the movable connector of the recording medium can be inserted into and removed from the fixed connector by the user's manual operation force without using the transport mechanism as described above. In this case, since it is necessary to set the installation position of the holder based on the total length of the mini-size recording medium, when the normal-size recording medium is inserted into the holder and connected to the connector, the rear end of the recording medium in the insertion direction There arises a problem that the side protrudes greatly from the front surface of the housing.

  The present invention has been made in view of the actual situation of the prior art as described above, and an object of the present invention is to provide a recording medium driving apparatus that can reliably connect two types of large and small recording media by a user's manual operation force and is easy to use. It is to provide.

In the present invention, a holder having a fixed connector is provided with a guide projection that engages with a guide groove formed on a side surface of a recording medium, and the movement of the holder to the rear of the housing is restricted by the lock member. Is disposed at a position shifted in the vertical direction with respect to the guide projection provided on the holder, so that the lock member is selectively operated by utilizing the difference in thickness between the two types of recording media, large and small. did.

In the recording medium driving device of the present invention, the lock member is disposed at a position shifted in the vertical direction with respect to the guide projection of the holder, so that the lock member can be used by utilizing the difference in thickness of the two types of recording media. When the recording medium having a larger thickness is inserted into the holder by selectively operating, the holder is moved to the rear side of the housing by driving the lock member with the insertion force of the recording medium to make the holder free. When the recording medium with the smaller thickness is inserted into the holder, the holder is moved to the front position of the housing with the lock member. Since the connector is connected, two types of recording media of different sizes can be connected to the connector by the user's manual operation force. Both the two recording media having different improves usability can be stored in a housing.

The present invention is arranged to be movable between a forward position and a backward position within a housing, and has two types of recording media, large and small, having substantially the same width dimension and different length and thickness dimensions. Is provided on the front end side in the insertion direction of the two types of recording media when the recording medium is inserted into the holder. The movable-side connector is a recording medium driving device connected to the fixed-side connector, and two types of large and small recording media have guide grooves extending in the insertion direction on their side surfaces, and the guide groove and the guide protrusion to be engaged is provided, and the locking member is provided for movement restriction the holder in the housing at the forward position, the upper and lower the locking member relative to the guide protrusion By disposing the position deviated to the direction, without to be driven to the lock member magnitude two only by the recording medium having a larger thickness dimension of the recording medium, the recording medium larger in the holder When inserted, the holder is moved to the retracted position of the housing by driving the lock member with the recording medium to release the movement restriction of the holder, and the movable by the insertion force of the recording medium When the side connector and the fixed connector are connected and a smaller recording medium is inserted into the holder, the movable member and the fixed connector are controlled by the lock member so that the holder is moved in the forward position. And were configured to be connected.

In the recording medium driving apparatus configured as described above, when the user manually inserts one of the two types of recording media into the holder and connects the connector, the recording medium with the larger thickness is inserted into the holder. When the recording medium is inserted, the locking member is driven by the insertion force of the recording medium to move the holder to the retracted position of the housing, and the movable connector and the fixed connector are connected. When inserting the recording medium with the smaller thickness dimension into the holder, both connectors are connected in a state where the holder is moved to the forward position of the housing by the lock member. In addition to being able to connect with a connector by manual operation force, both recording media with different length dimensions can be stored in the housing, making it easier to use To. In addition, the two types of large and small recording media have guide grooves extending in the insertion direction on their side surfaces, and a guide protrusion that engages with the guide groove is provided on the holder. Since the recording medium is disposed at a position shifted in the vertical direction, both the recording media can be smoothly inserted into and removed from the holder, and the locking member can be reliably operated by utilizing the difference in the thickness dimensions of the both recording media.

  In the above configuration, the lock member may be slidably supported by the housing, but the lock member is rotatably supported by the housing and the lock member is engaged with the holder by the spring member. It is preferable to elastically bias in the direction because a stable operation of the lock member can be realized.

  The embodiment will be described with reference to the drawings. FIG. 1 is a plan view showing a standby state of the recording medium driving apparatus according to the embodiment of the present invention, and FIG. 2 uses a mini-size recording medium for the recording medium driving apparatus. FIG. 3 is a plan view showing an ejected state when a mini-size recording medium is used for the recording medium driving apparatus, and FIG. 4 is a normal-size recording medium for the recording medium driving apparatus. FIG. 5 is a plan view showing a state in the middle of insertion when a normal size recording medium is used in the recording medium driving device, and FIG. FIG. 7 is a plan view showing a connector connection state when a recording medium of a size is used, and FIG. FIG. 8 is an operation explanatory view of a lock member provided in the recording medium driving device, FIG. 9 is an explanatory view showing a relationship between the lock member and the holder, and FIG. a) is a plan view of a mini-size recording medium used in the recording medium driving apparatus, FIG. 10B is a side view of the mini-size recording medium, and FIG. 11A is used in the recording medium driving apparatus. FIG. 11B is a side view of the normal size recording medium.

  As shown in FIGS. 1 to 7, the recording medium driving apparatus according to the present embodiment includes a box-shaped housing 1 housed in a predetermined position (for example, in a console) in a vehicle compartment, and a front opening of the housing 1. And a front panel 2 attached to the end, and two types of recording media 3 and 4 can be inserted into and discharged from the housing 1 through an insertion port 2a provided in the front panel 2. The external dimensions of these recording media 3 and 4 are classified into a smaller mini size and a larger normal size. Hereinafter, the mini size recording medium is referred to as the first recording medium 3, and the normal size recording medium is referred to as the second size. This is called a recording medium 4.

  As shown in FIG. 10, the first recording medium 3 is a hard disk (not shown) as a recording medium housed in a synthetic resin cartridge 5. The cartridge 5 has a width dimension of W1 and a length dimension of L1 and the thickness (height) dimension are set to H1. A movable connector 6 is provided on the insertion side end surface of the cartridge 5, and a guide groove 5 a extending in the insertion / ejection direction and a clamping recess 5 b are formed on the left and right side surfaces of the cartridge 5.

  As shown in FIG. 11, the second recording medium 4 is a hard disk (not shown) as a recording medium housed in a synthetic resin cartridge 7. The cartridge 7 has a width dimension of W2 and a length dimension of L2 and the thickness (height) dimension are set to H2. A movable connector 8 is provided on the insertion side end surface of the cartridge 7, and a guide groove 7 a extending in the insertion / ejection direction and a clamping recess 7 b are formed on the left and right side surfaces of the cartridge 7. Here, each dimension of the second recording medium 4 with respect to each dimension of the first recording medium 3 has a relationship of W1 = W2, L1 <L2, H1 <H2, specifically, W1 = W2 = 80 mm, L1 = 67 mm, L2 = 110 mm, H1 = 10 mm, and H2 = 12 mm. Further, the guide grooves 5a, 7a and the recesses 5b, 7b of the first and second recording media 3, 4 are formed at the same height position, and the second recording medium 4 of the normal size is the mini-sized first recording medium 4. One recording medium 3 is formed thicker by h (= H2−H1). The movable connectors 6 and 8 of the first and second recording media 3 and 4 have the same structure and the same shape, and the height position and the width direction position with respect to the cartridges 5 and 7 are also the same. Although the detailed structure is not shown, the movable connectors 6 and 8 are formed by arranging a plurality of clip-shaped female terminals at a predetermined pitch.

  A holder 9 having an open front is disposed inside the housing 1, and the first and second recording media 3 and 4 are selectively held by the holder 9. A fixed-side connector 10 that can be connected to the movable-side connectors 6 and 8 of the first and second recording media 3 and 4 is disposed in the inner part of the holder 9, and the detailed structure is not shown. However, the fixed connector 10 is composed of a plurality of pin-shaped male terminals arranged at the same pitch as the female terminals of the movable connectors 6 and 8. A plurality of pins 11 are planted on both upper and lower surfaces of the holder 9, and these pins 11 are guided by linear guide holes 12 a, 12 b, 12 c formed on the upper and lower surfaces of the housing 1. The holder 9 is movable in the front-rear direction (X1-X2 direction) between the forward movement position shown in FIG. 1 and the backward movement position shown in FIG. A pair of eject arms 13 are rotatably supported on the pin 11 at the center of the lower surface of the holder 9, and these eject arms 13 are formed in an L shape in which a long piece and a short piece are continuously connected at a right angle. Drive pins 13 a are implanted at the ends of the long pieces of the eject arms 13, and these drive pins 13 a can come into contact with the insertion side end surfaces of the first and second recording media 3 and 4. Yes. Both eject arms 13 are urged to rotate inward of the holder 9 by the elastic force of a spring (not shown), and both drive pins 13a project into the holder 9 by receiving the elastic force. Yes. Guide protrusions 9a are formed on the left and right inner portions of the holder 9, and the guide grooves 5a and 7a of the cartridges 5 and 7 described above are guided by these guide protrusions 9a, whereby the first and second recordings are performed. The media 3 and 4 can be smoothly inserted into and removed from the holder 9 and do not rattle in the vertical direction within the holder 9. Further, a clamper 14 for holding the first and second recording media 3, 4 is rotatably supported on the left and right inner portions of the holder 9, and both the clampers 14 are held inside the holder 9 by a torsion coil spring 15. It is elastically biased toward the direction.

  Lock members 16 are rotatably supported on both sides of the upper surface of the housing 1, and as shown in FIG. 8, the lock members 16 are elastically wound by a torsion coil spring 17 wound around a rotating shaft 16a. It is urged to rotate inward of the holder 9 by force. A restricting portion 16b is bent at the front end side of the lock member 16, and the restricting portion 16b comes into contact with the engaging portion 9b at the rear end of the holder 9, so that the holder 9 is located behind the housing 1 (X2 direction). The position is restricted so as not to move to). Further, a receiving portion 16c having a triangular shape in plan view protruding inward of the holder 9 is formed on the side surface of the lock member 16, and this receiving portion 16c is formed on the first and second recording media 3 and 4. It has two taper surfaces which incline mutually oppositely along the insertion direction. As shown in FIG. 9, the receiving portion 16 c of the lock member 16 is positioned above the guide projection 9 a of the holder 9, and when the first and second recording media 3 and 4 are inserted into the holder 9, the thickness dimension The second recording medium 4 with the larger H2 contacts the receiving portion 16c, but the first recording medium 3 with the smaller thickness dimension H1 contacts the receiving portion 16c only by passing below the receiving portion 16c. It is supposed not to. That is, the lock member 16 is selectively rotated using the difference in thickness (h = H2−H1) between the first and second recording media 3 and 4. Then, when the second recording medium 4 is inserted, the upper portion of the side surface of the cartridge 7 presses the receiving portion 16 c, so that the lock member 16 rotates outward of the holder 9 against the elastic force of the torsion coil spring 17. Accordingly, since the restricting portion 16b is retracted from the engaging portion 9b of the holder 9, the restriction by the lock member 16 is released, and the holder 9 can move rearward (X2 direction) of the housing 1.

  Further, a coil spring 18 is stretched between the upper surface of the housing 1 and the upper surface side of the holder 9, and the holder 9 is elastically biased toward the front side (X1 direction) of the housing 1 by the coil spring 18. Has been. Further, an eject lever 19 that can move in the front-rear direction (X1-X2 direction) and a slide lock plate 20 that can move in the left-right direction (Y1-Y2 direction) are disposed on the lower surface of the housing 1. A part of the lever 19 protrudes forward of the housing 1. The eject lever 19 is elastically biased toward the front side (X1 direction) of the housing 1 by a coil spring 21, and the first and second drive pins 19a and 19b are implanted in the eject lever 19. The first drive pin 19a is located between the short pieces of the two eject arms 13, and the both eject arms 13 are rotated by the first drive pin 19a. On the other hand, the slide lock plate 20 is elastically biased rightward (Y2 direction) of the housing 1 by a coil spring 22, and the slide lock plate 20 has a pair of locking portions 20a and a release portion 20b. ing. Both locking portions 20a are located at the rear end portions of both guide holes 12c formed on the lower surface of the housing 1, and the pins 11 moving along the guide holes 12c are locked to the locking portions 20a. The holder 9 is locked at the back position in the housing 1 against the tensile force of the coil spring 18. Further, the release portion 20 b faces the second drive pin 19 b of the eject lever 19, and the slide lock plate 20 is biased by the coil spring 22 when the release portion 20 b is pressed by the second drive pin 19 b. It moves in the Y1 direction against this.

  Next, the operation of the recording medium driving device configured as described above will be described.

  FIG. 1 shows a standby state at the time of ejection when neither the first recording medium 3 nor the second recording medium 4 is inserted into the housing 1, and in this case, the holder 9 is on the front side of the housing 1. In the forward position. Further, as shown in FIG. 8A, the lock member 16 is urged to rotate inward of the holder 9 by the elastic force of the torsion coil spring 17, and the receiving portion 16 c is a media insertion path of the holder 9. And the restriction portion 16b is in contact with the engaging portion 9b of the holder 9 or is opposed through a slight gap. The holder 9 is moved backward (X2 direction) of the housing 1 by the lock member 16. The position is restricted so as not to move.

  In this standby state, when the user manually inserts the first recording medium 3 into the holder 9 in the housing 1 from the insertion port 2a, first, both the front end side of the cartridge 5 in the insertion direction of the first recording medium 3 are used. The corner abuts against the clamper 14, and the clamper 14 rotates outward of the holder 9 against the elastic force of the torsion coil spring 15 by the insertion force of the first recording medium 3. In this case, since the guide groove 5a of the first recording medium 3 is inserted into the holder 9 while being guided by the guide protrusion 9a, the first recording medium 3 having a small thickness dimension H1 as shown in FIG. The lock member 16 passes below the receiving portion 16c of the lock member 16, and the lock member 16 does not rotate due to the insertion force of the first recording medium 3. When the first recording medium 3 is further inserted and the rear end side in the insertion direction reaches the inside of the housing 1, both drive pins 13 a are pressed against the front end surface of the first recording medium 3 as shown in FIG. 2. As a result, both eject arms 13 rotate rearward, and a part of the clamper 14 enters the recess 5b of the cartridge 5 so that the first recording medium 3 is held by the holder 9 via the clamper 14. At this time, since the movement of the holder 9 in the X2 direction is restricted by the lock member 16, the movable connector 6 and the fixed connector 10 can be reliably connected by the insertion force of the first recording medium 3. Various data recorded on the first recording medium 3 can be exchanged to the apparatus side through the connector connection of the movable connector 6 and the fixed connector 10.

  Further, when the first recording medium 3 mounted in the apparatus is ejected in this way, when the user pushes the eject lever 19 backward (X2 direction), as shown in FIG. Since the first drive pin 19a of the lever 19 presses the short pieces of the two eject arms 13, both the eject arms 13 rotate toward the inside of the holder 9, and accordingly both the drive pins 13a become the first recording medium. 3 is pressed toward the front side (X1 direction) of the housing 1. As a result, the clamper 14 is rotated again to the outside of the holder 9 and detached from the recess 5b, and the movable connector 6 comes out of the fixed connector 10 and the connector connection between them is released. 3 is pushed out to the position where the rear end portion in the insertion direction protrudes from the insertion port 2 a, and the user can grasp the rear end portion of the first recording medium 3 and pull it out from the holder 9.

  On the other hand, when the user inserts the second recording medium 4 into the holder 9 in the housing 1 through the insertion port 2a by manual operation in the standby state shown in FIG. 1, first, as shown in FIG. 4 in the insertion direction of the cartridge 4 abuts against the clamper 14, and the clamper 14 moves outward of the holder 9 against the elastic force of the torsion coil spring 15 by the insertion force of the second recording medium 4. And both upper corners of the second recording medium 4 come into contact with the front taper surface of the receiving portion 16c of the lock member 16. When the user further inserts the second recording medium 4 into the holder 9, the receiving portion 16 c is pressed by the upper side surface of the second recording medium 4 as shown in FIG. The torsion coil spring 17 rotates against the elastic force of the holder 9, and the restricting portion 16 b is retracted outward from the engaging portion 9 b of the holder 9. That is, in the case of the second recording medium 4 having a length L2 larger than that of the first recording medium 3, the second recording medium 4 is inserted until the movable connector 8 faces the fixed connector 10. At this point, the lock member 16 is rotated by the insertion force of the second recording medium 4, so that the restriction of the movement of the holder 9 to the rear side (X2 direction) of the holder 9 by the lock member 16 is released. Become.

  In this state, when the user further inserts the rear end portion of the second recording medium 4 protruding from the insertion port 2a into the housing 1, the holder 9 inserts the second recording medium 4 into the insertion force as shown in FIG. In response, the housing 1 moves rearward (X2 direction), and the pair of pins 11 of the holder 9 approaches the engaging portion 20a of the slide lock plate 20 along both guide holes 12c of the housing 1. During this time, the movable connector 8 and the fixed connector 10 are not sufficiently connected to each other. However, as shown in FIG. 6, the rear end of the second recording medium 4 in the insertion direction enters the housing 1. When inserted to the position, the pin 11 at the center of the holder 9 moves to the rear end position of the guide hole 12a of the housing 1, and the holder 9 cannot be moved further to the rear of the housing 1. Therefore, after the holder 9 has moved from the position shown in FIGS. 5 to 6, the movable connector 8 and the fixed connector 10 can be reliably connected by the insertion force of the second recording medium 4. Various data recorded on the second recording medium 4 can be transferred to the apparatus side through the connector connection between the connector 8 and the fixed connector 10. When the movable connector 8 and the fixed connector 10 are connected to each other, both the drive pins 13a are pressed against the front end surface of the second recording medium 4 so that both the eject arms 13 are rotated rearward. The recording medium 4 is held by the holder 9 via the clamper 14, and the above-described pin 11 is locked to the locking portion 20 a of the slide lock plate 20, so that the holder 9 is locked at the inner position in the housing 1. It will be in the state.

  Further, when the second recording medium 4 mounted in the apparatus is ejected in this manner, when the user pushes the eject lever 19 backward (in the X2 direction), as shown in FIG. Since the second drive pin 19b of the lever 19 presses the release portion 20b and moves the slide lock plate 20 in the Y1 direction, the locked state of the holder 9 by the slide lock plate 20 is released. It moves to the front (X1 direction) of the housing 1 by the tensile force. As a result, the rear end portion in the insertion direction of the second recording medium 4 held by the holder 9 largely protrudes from the insertion port 2a, so that the user grasps the rear end portion of the second recording medium 4 and pulls it out of the holder 9. And the connector connection of the movable side connector 8 and the fixed side connector 10 can be cancelled | released with the removal force.

  In the above embodiment, the first and second recording media 3 and 4 are exemplified by the cartridges 5 and 7 containing a hard disk as a magnetic disk. However, a card type or cartridge type recording medium containing a semiconductor memory or an optical disk is exemplified. Etc.

  In the above embodiment, when the second recording medium 4 is inserted, the movement restriction of the holder 9 by the lock member 16 is released before the movable connector 8 and the fixed connector 10 are connected. By appropriately changing the installation position of the lock member 16, the holder 9 is locked in the forward position until the movable connector 8 of the second recording medium 4 is completely connected to the fixed connector 10. The locking member 16 is driven almost simultaneously with the connection of the second recording medium 4 and the subsequent insertion force of the second recording medium 4 causes the holder 9 to move to the retracted position while both the connectors 8 and 10 remain connected. May be.

  It is also possible to provide a lock member on the holder 9 so that the lock member is engaged with and disengaged from the housing 1 by the second recording medium.

It is a top view which shows the standby state of the recording media drive device based on the Example of this invention. FIG. 3 is a plan view showing a connector connection state when a mini-size recording medium is used for the recording medium driving device. FIG. 6 is a plan view showing an ejected state when a mini-size recording medium is used for the recording medium driving device. It is a top view which shows the insertion initial state when a normal size recording medium is used for this recording medium drive device. It is a top view which shows the state in the middle of insertion when the recording medium of normal size is used for this recording medium drive device. FIG. 3 is a plan view showing a connector connection state when a normal size recording medium is used in the recording medium driving device. FIG. 3 is a plan view showing an initial ejection state when a normal size recording medium is used in the recording medium driving device. It is operation | movement explanatory drawing of the lock member with which this recording medium drive device is equipped. It is explanatory drawing which shows the relationship between this locking member and a holder. It is explanatory drawing of the recording medium of the mini size used for this recording medium drive device. It is explanatory drawing of the normal size recording medium used for this recording medium drive.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Front panel 2a Insert port 3 1st recording medium 4 2nd recording media 5, 7 Cartridge 5a, 7a Guide groove 5b, 7b Recessed part 6, 8 Movable side connector 9 Holder 9a Guide protrusion 10 Fixed side connector 12a , 12b, 12c Guide hole 13 Eject arm 13a Drive pin 13b
14 Clamper 16 Locking member 16a Rotating shaft 16b Restricting portion 16c Receiving portion 17 Torsion coil spring 18 Coil spring 19 Eject lever 19a First drive pin 19b Second drive pin 20 Slide lock plate 20a Locking portion 20b Release portion

Claims (2)

Two types of large and small recording media that are arranged so as to be movable between a forward position and a backward position within the housing and have substantially the same width dimension and different dimensions in the length direction and the thickness direction are selectively used. A movable connector provided on the leading end side in the insertion direction of these two types of recording media when the recording media is inserted into the holder, the holder being inserted and a fixed connector provided in the holder Is a recording medium driving device connected to the fixed connector,
Large and small two types of recording medium has a guide groove extending in the insertion direction to that side, with the guide protrusion of the guide groove and engaged with the holder is provided, the forward said holder to said housing A lock member for restricting movement at a position is provided, and the lock member is disposed at a position shifted in the vertical direction with respect to the guide projection, so that the lock member has a thickness dimension of two types of large and small recording media. Is driven only by the larger recording medium, and when the larger recording medium is inserted into the holder, the movement of the holder is released by driving the lock member with the recording medium. The holder is moved to the retracted position of the housing, and the movable connector and the fixed connector are brought into contact with each other by the insertion force of the recording medium. When the smaller recording medium is inserted into the holder, the movable member is connected to the fixed connector by restricting movement of the holder at the forward position by the lock member. A recording medium driving device characterized by the above. 2. The recording medium drive according to claim 1 , wherein the lock member is rotatably supported by the housing, and the lock member is elastically biased in a direction to engage the holder by a spring member. apparatus.

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