JP3092262U - Magnetic tape unit - Google Patents

Abstract

[PROBLEMS] To eliminate an expensive flat cable, a relay board, and the like by forming an electric path connecting a stator winding and a main board by extending a lead portion of the stator winding to be long. Although it is possible to make the drawer, it is difficult for the drawer to be disconnected. Improves the routing of electric circuits compared to the case of using flat cables. SOLUTION: A conventional flat cable is used for an electric path 5 connecting a winding 72 of a stator 81 of a rotary transformer 8 housed in a cylinder 2 and a circuit pattern of a main board 4, and a lead portion 73 of the winding 72 is provided. It is formed by extending the length. An adhesive surface 92a of the strip-shaped adhesive 9 to which the drawer 73 is attached is attached to the back 93 of the winding holder 71.
Paste in. The drawer 73 includes non-sticking portions 73a and 73b having slack on the winding holder 71 side and the connection circuit board 56 side, respectively.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a magnetic tape device, more specifically, a magnetic head containing a cylinder. The stator winding of the rotary transformer and the circuit pattern of the main board Relates to a magnetic tape device connected by.

[0002]

[Prior art]

  FIG. 7 shows a conventional example of this type of magnetic tape device, and FIG. 8 shows a conventional magnetic tape device. Shows flat cables as electric circuit components used in tape devices ing.

[0003]   The magnetic tape device shown in FIG. The cylinder 2 located behind the tape cassette accommodating portion 11 is attached to the chassis 1. A main board 4 is provided below the chassis 1. Loading mode Then, the tape cassette inserted from the cassette opening (not shown) on the front side of the chassis 1. After (not shown) is loaded into the tape cassette housing section 11, The magnetic tape pulled out is wound around the cylinder 2. Cylinder 2 is fixed It has a drum and a rotating drum equipped with a magnetic head (not shown). By rotating with the head, it is wrapped around the cylinder 2 to run. The magnetic tape is controlled in a predetermined mode. And for the magnetic head Signal transmission by the action of the rotary transformer housed in the cylinder 2. Received. In addition, the winding of the stator of the rotary transformer and the winding of the main board 4 The path pattern is connected by the electric path 5.

[0004]   Although not shown, in the conventional magnetic tape device, the electric path 5 is The end is guided from above the cylinder to the inside of the cylinder and connected to the drawing part of the above winding. The other end is connected to the circuit pattern of the main board 4. Moreover, A flat cable 51 is used for the electric circuit component, and as shown in FIG. One end of the output cable 51 is connected to the winding holder 71 of the stator via the relay board 52. The circuit pattern of the main board 4 is connected to the lead-out portion of the winding wire 72 and at the other end. The connection circuit board 53, which is connected to the connector, was connected. Also, the above of the winding 72 The length of the lead-out portion is very short, and such a short lead-out portion is fixed to the winding holder 71. It was connected to the determined relay board 52.

[0005]   FIG. 9 illustrates the flat cable 51 in a sectional view. This flat cable The reference numeral 51 designates a required number of conductors 54 arranged in parallel with each other, and an outer shell 5 made of an electrically insulating resin. It has a structure that it is wrapped with 5, and its flexibility is higher than that of the drawn-out portion of the winding 72. All inferior. That is, the flat cable 51 has a relatively large bending rigidity. It is not very flexible, and if it is flexible, it is not so big, Since the wire 72 and its drawn-out part are thin wires with a diameter of 0.8 mm, they are flexible. On the other hand, it is rich, but its drawer part has the property of being easily broken. for that reason, Through the relay substrate 52 fixed to the winding holder 71, the winding 72 having extremely different flexibility And the conductor 54 of the flat cable 51 was connected.

[0006]   On the other hand, in Japanese Utility Model No. 3086918, as shown in FIG. What is formed by the lead-out portion 73 of the winding is disclosed. Figure 10 is magnetic FIG. 3 is a view of the tape device as seen from below. The winding lead-out portion 73 is drawn downward through the opening 25 provided in the lower wall of the ram, A land of a circuit pattern in which the end portion of the lead-out portion 73 is formed on the lower surface of the main board 4. It is directly soldered to. Further, in this publication, the end portion of the drawer portion 73 is directly attached. Instead of soldering, the end portion of the lead-out portion 73 is connected to the connecting circuit board 5 as shown in FIG. 6 is soldered to the land 6, and the connecting circuit board 56 is connected to the circuit of the main board 4. Soldering to the land 41 of the pattern is also shown. According to this one, Expensive flat cable 51, relay board 52, etc. as described in FIGS. 7 and 8 Is omitted, the number of parts is reduced by that much, making it easier to reduce costs. In addition to the advantage that the electric path 5 consisting of the lead-out portion 73 of the winding 72 is Since it is routed downward from the opening 25 opened on the lower wall of the fixed drum of D2, The length of the lead-out portion 73 can be made as short as possible, and even if the lead-out portion 73 has a Even if it has the property of being easy, it is difficult for the lead-out part 73 to break. There are advantages. In addition, in FIG. 7 to FIG. is there.

[0007]

[Problems to be solved by the device]

  The conventional magnetic tape device described with reference to FIGS. The electric path 5 connecting the winding 72 of the motor and the circuit pattern of the main board 4 becomes longer. Also, by using the flat cable 51 with less risk of disconnection, reliability can be improved. Although it has the advantage of being able to form high electric circuits, The required number of parts and assembly work due to the need for the bull 51 and the relay board 52. There is a problem that the number increases and it is difficult to reduce costs. Also, the flat cable Since the bull 51 has relatively large bending rigidity, the bend of the flat cable 51 The circuit board 53 for connection at the other end is connected to the circuit board of the main board 4 without adjusting the shape. Just by soldering to the turn, the rigidity of the flat cable 51 will affect Unreasonable force is applied to the soldering point of, and the soldering point is easily peeled off. That Therefore, it is necessary to bend the flat cable 51 before soldering to adjust the bent shape. I was forced to do some extra work.

[0008]   On the other hand, the one described in FIG. 10 or FIG. 11 is for drawing out the winding wire 72 having a small wire diameter. Even if the extension portion 73 is not so long, the extension portion 73 itself is still There is still a risk that the wire breaks easily, and the risk of wire breakage in the drawer 73 is eliminated. Not wiped. In addition, since the wire diameter of the drawer 73 is extremely thin, The work of soldering to the circuit pattern of the wiring board 4 is troublesome, and the soldering is performed directly. In some cases, skill was required for the soldering work.

[0009]   The present invention has been made in view of the above circumstances and problems, and is housed in a cylinder. The electric wire that connects the stator winding to the main board circuit. An expensive flat cable or relay is formed by extending the extension part of the Although it is possible to omit the substrate, etc., In all cases, disconnection of the drawer is much less likely to occur, and a flat cable is used. It is an object of the present invention to provide a magnetic tape device that is superior in circling the electric circuit than in the case of It

[0010]

[Means for Solving the Problems]

  The magnetic tape device according to the present invention is housed in a cylinder containing a magnetic head. The electric wire that connects the winding of the stator of the rotary transformer and the circuit pattern of the main board. A path is provided between the winding draw-out portion drawn from the stator winding holder and the winding. It is connected to the passage pattern and is inserted into the opening provided in the fixed drum of the cylinder. Targeting magnetic tape devices formed by flat cables The magnetic tape device of this type will be described first with reference to FIGS. explained.

[0011]   In the present invention, the electric circuit is replaced with the flat cable, and the lead-out portion of the winding is used. The length of the drawer is extended, and the extended drawer part is inserted through the opening, and the drawer Formed by connecting the end of the part to the circuit pattern, The substantially entire length portion including the insertion portion for the opening is inserted into the opening and It is attached to the adhesive surface of the band-shaped adhesive body, one end of which is attached to the holding body.

[0012]   With this configuration, the stator winding can be pulled without using a flat cable. Since the projecting portion is connected to the circuit pattern, the relay board 52 shown in FIG. 8 is unnecessary. Moreover, the number of connecting points between the circuit pattern on the main board and the windings is small. As a result, the connection reliability of the electric circuit is improved. Also, the drawer part has been extended Even if it is present, the approximately full length part of the drawn-out part is a band with one end attached to the winding holder. Since it is affixed to the adhesive surface of the strip-shaped adhesive, even if the strip-shaped adhesive is pulled The tensile load is not applied to the wire and the winding, and as a result, the drawer portion and the winding have a diameter of 0. Even if the wire is as thin as 8 mm, there will be no accidental disconnection.

[0013]   In the present invention, the pull-out portion is a pull-out starting point from the winding holder and its pull-out point. Having a non-sticking part between the sticking end point to the band-shaped adhesive body corresponding to the starting point, On the non-sticking part, bend the band-shaped adhesive body by bending deformation without generating tension. It is desirable that a slack that can be absorbed is given. According to this, the wiring of the electric circuit Even if the band-shaped adhesive body bends during the work, the bending deformation is provided on the drawer. It will be absorbed by the looseness between the drawer start point and the pasting end point, The lead-out section will not be forcibly pulled or broken.

[0014]   In the present invention, the other end of the band-shaped adhesive is an electrode connected to the circuit pattern. It is attached to the connecting circuit board with a surface and the run of the connecting circuit board It is desirable that the end of the lead-out portion is soldered to the cord. According to this Easy to connect the thin wire drawer to the circuit pattern on the main board As a result, workability of connecting the electric circuit is improved.

[0015]   In the present invention, the connecting circuit board has a concave portion at the edge thereof which is concave toward the land side. It is desirable that the drawer part is introduced into the land through the recess. Good According to this, the band-shaped adhesive body is not bent at the edge of the connection circuit board. However, even if the drawer part is bent, the bent state will be more gentle than that of the band-shaped adhesive. The breakage of the drawer part is prevented.

[0016]   In the present invention, the lead-out portion is a starting point of introduction into the connecting circuit board and its guiding point. Form the above-mentioned recess between the sticking end point on the above-mentioned band-shaped adhesive that corresponds to the entry start point. Does not generate tension when the band-shaped adhesive is bent when it is attached to the overhanging piece. It is desirable to have a slack to be absorbed by bending deformation, which allows Also, even if the band-shaped adhesive body bends due to the wiring work of the electric circuit, the bending deformation will It is absorbed by the slack between the above-mentioned introduction start point and the pasting end point. As a result, the drawer portion will not be forcibly pulled or broken.

[0017]   The present invention can be further configured as follows. That is, the magnetic head The winding of the stator of the rotary transformer housed in the storage cylinder and the main board An electric circuit connecting to the circuit pattern is drawn from the winding holder of the stator. Connect the lead-out part of the winding wire to the circuit pattern and fix the fixed drum of the cylinder. Formed by a flat cable that is inserted through an opening provided in the In the magnetic tape device, the wire is replaced by the winding instead of the flat cable. Extend the length of the drawer part of, and insert the extended drawer part through the opening, The end portion of the lead-out portion is connected to an electrode surface to be connected to the circuit pattern. It is formed by soldering to the land of the road board, and The substantially full-length portion including the opposite insertion portion has one end adhered to the winding holder and the other end. Of the band-shaped adhesive body in which the intermediate portion is inserted into the opening by attaching the portion to the circuit board for connection. It is affixed to the adhesive surface, and the above-mentioned drawer part is the start of drawing from the above-mentioned winding holder. Between the point and the end point of sticking to the strip-shaped pressure-sensitive adhesive body corresponding to the drawing start point, With a slack that absorbs the bending of the sticky adhesive by bending deformation that does not generate tension It has a non-sticking part, and its pull-out part is on the edge of the connection circuit board. It has been introduced into the land through a recess that is recessed into the land. , Between the introduction start point and the attachment end point to the band-shaped adhesive body corresponding to the introduction start point Also, fold the above-mentioned band-shaped adhesive body while being attached to the overhanging piece forming the above-mentioned recess. A non-stick part with a slack that absorbs the bending by bending deformation that does not generate tension And the flexibility of the strip-shaped adhesive body including the pull-out portion to which the pull-out portion is attached. The material of the strip-shaped adhesive so that the flexibility is greater than the flexibility of the flat cable. Can be adopted. About the operation of this configuration This will be clarified by the embodiment described below.

[0018]

[Embodiment of device]

  FIG. 1 is a partially cutaway side view showing a main part of a magnetic tape device according to the present invention. same As shown, this magnetic tape unit was attached to a chassis (not shown). The cylinder 2 has a fixed drum 21 and a rotating drum 22 having a magnetic head 23. , The rotating drum 22 rotates together with the magnetic head 23, and Recording or reproduction is performed on a magnetic tape (not shown) that is wound around and runs. . A rotary transformer 8 is housed in the cylinder 2. This rotary tiger The stator 8 includes a stator 81 attached to the fixed drum 21 and the stator 81. And a rotor 82 attached to the rotary drum 22 as a partner of the rotor 8 The winding on the side of the stator 81 is connected to the magnetic head 23, and the winding on the side of the stator 81 is connected to the fixed drum. 21 of the cylinder 3 formed by the electric path 5 passing through the opening 25 formed in the lower wall 26 It is connected to the circuit pattern of the main board 4 arranged on the lower side.

[0019]   FIG. 2 is a partially broken view of the winding holder 71 of the stator 81 and the electric path 5 in a developed state. A plan view and FIG. 3 are schematic side views of the same. 2 or 3, 9 is a band-shaped adhesive body Yes, and its cross-sectional structure is illustratively shown in FIG. As shown in FIG. 6, the band-shaped adhesive 9 Is obtained by holding the adhesive layer 92 on one surface of the highly flexible base material 91. Inexpensive vinyl chloride resin that has flexible properties but little stretchability A fat sheet or a polyester resin sheet can be preferably used. This band-shaped adhesive 9 , Its one end 93 is attached to the back surface of the winding holder 71, and the other end 9 4 is attached to the back surface of the connecting circuit board 56.

[0020]   4 is an enlarged plan view of the connection circuit board 56, and FIG. 5 is a portion taken along line VV of FIG. FIG. As shown in FIGS. 4 and 5, the connection circuit board 56 is a main board. 4 (see FIG. 1) and the required number of electrode surfaces 57 connected to the circuit pattern, and the stator 8 And a land 58 to which the end of the lead-out portion of the first winding is soldered, and the end thereof Recesses formed so as to be recessed toward the land 58 at a plurality of locations on the edge (three locations in the illustrated example) 59 is equipped.

[0021]   Then, as shown in FIG. 2 or 3, it is pulled out from the winding (not shown) of the winding holder 71. The extended drawer portion 73 is extended to a long position, and the end portion 74 of the drawer portion 73 is extended as shown in FIG. Is soldered to the land 58 of the connection circuit board 56, and the lead-out portion 7 As shown in FIG. 2, the adhesive layer 92 of the strip-shaped adhesive body 9 forms a substantially full-length portion of the adhesive layer 3 of FIG. It is attached to the attachment surface 92a. In FIG. 2, the adhesive surface 92a of the band-shaped adhesive body 9 is attached. The three parallel drawers 73 attached are shown, but the individual drawers shown The bending portion 73 is a set of a required number of thin lines. In FIG. 3, symbol a is a soldering point Shows the solder.

[0022]   In this manner, the one end portion 93 of the substantially full length portion of the pull-out portion 73 is the back of the winding holder 71. A belt-like shape that is attached to the surface and the other end 94 is attached to the back surface of the connection circuit board 56. If it is adhered to the adhesive surface 92a of the adhesive body 9, the belt-shaped adhesive body 9 will have a large tensile force. Even if is applied, the tensile force is received only by the strip-shaped adhesive body 9, No tensile force is applied to the drawer portion 73. Therefore, the drawer portion 73 receives the tensile force. The situation of disconnection cannot occur.

[0023]   As shown in FIG. 3, the pull-out portion 73 has a pull-out start point 75 from the winding holder 71 and its pull-out point 75. The portion between the withdrawal start point 75 and the attachment end point 76 to the strip-shaped adhesive body 9 is loosened. It is formed as a non-sticking portion 73a having. Therefore, the strip-shaped adhesive body 9 is wound. When bent near the wire holder 71, the non-sticking portion 73a does not generate tension. In this state, the non-sticking portion 73a is bent and deformed. It has the effect of absorbing bending. Further, as shown in FIGS. 73, the end 74 of the connecting circuit board 56 passes through the recess 59 at the end of the connecting circuit board 56, and It has been introduced to and corresponds to the introduction start point 77 of the drawer portion 73 and the introduction start point 77. The non-sticking portion 7 having a slack in a portion between the sticking end point 78 and the strip-like adhesive body 9 Formed as 3b. Therefore, the strip-shaped adhesive body 9 is contacted as shown in FIG. 5, for example. When it is bent near the connecting circuit board 56, the non-sticking portion 73b generates tension. The non-sticking portion 73b is bent and deformed without twisting, and the non-attached portion 73b is bent and deformed. It exerts the effect of absorbing the bending of 9. In particular, in this embodiment, for connection The end 74 of the lead-out portion 73 is guided to the land 58 via the recess 59 at the end edge of the circuit board 56. In addition, the end portion of the strip-shaped adhesive body 9 that has been inserted is recessed on the back surface of the connection circuit board 56. Since the adhesive is also applied to both sides of the place 59, the strip-shaped adhesive body 9 can be attached to the recess 59 shown in FIG. Location a located at the opening, that is, location on the front side of the introduction start point 77 described above It will start to bend. Therefore, as shown in FIG. Even if it is bent, the non-sticking portion 73b of the drawer portion 73 is easily placed in the recess 59. It deforms so as to enter, and as a result, the introduction start point 77 is strong with the edge corner of the recess 59. It is unlikely that something will rub and break.

[0024]   The strip-shaped adhesive body 9 described in FIGS. 2 to 5 and the drawer attached to the adhesive surface 92a thereof As shown in FIG. 1, the intermediate portion of the electric path 5 formed by the curved portion 73 has a fixed drum. For connection, it is inserted through the opening 35 provided in the lower wall of the frame 32 and routed downward. The electrode surface 57 (see FIG. 4) of the circuit board 56 is soldered to the land of the main board 4. It Reference numeral b indicates the solder at the soldering point.

[0025]   As shown in FIG. 2 or FIG. 3, in this embodiment, the adhesive surfaces 92 of the two strip-shaped adhesive bodies 9 are used. a is attached to each other, and the lead-out portion 73 forming the electric path 5 therebetween is sandwiched. It's complicated. By doing this, the drawer is pulled out at the insertion point for the opening 25 shown in FIG. The portion 73 rubs against the rim of the opening 25 and is broken or the coating of the drawer portion 73 is peeled off. There is an advantage that such a situation does not occur. However, pull it to the drawer 73 If you do not need to apply force, use one strip of adhesive 9 Just need to be there.

[0026]   In addition, in FIG. 4, the one in which the recess 59 is formed at the edge of the connecting circuit board 56 is described. However, by omitting the recess 59, the edge of the connection circuit board 56 is It is also possible to make it straight, and even in that case, the drawer portion 73 is not attached to the non-sticking portion 7. By providing 3b, disconnection of the lead-out portion 73 is prevented.

[0027]

[Effect of device]

  As described above, according to the present invention, the stator windings housed in the cylinder and For the electric circuit that connects to the circuit of the main board, extend the extended part of the stator winding. Since it was formed by using a flat cable, an expensive flat cable as a circuit forming member, a relay board, etc. Can be omitted, and the number of parts can be reduced accordingly, and cost down It becomes easier to plan. In addition, one end of the extended extension part is used as the winding holding part. With a means of sticking to the adhesive surface of the adhered band-shaped adhesive, a thin wire drawing Since the tensile force is not applied to the extension part, extend the extension part to extend the electric circuit. Although it is formed, it has an advantage that disconnection is unlikely to occur in the drawn portion.

[0028]   Also, by properly selecting the material of the band-shaped adhesive, the band-shaped adhesive can be pulled out. The flexibility including the parts is made larger than that of the flat cable. Now, it is said that the runnability of the electric circuit is better than when using a flat cable. There are advantages. Furthermore, by providing a non-sticking part in the drawer part If the bending of the body can be absorbed, the wire breakage of the drawer will occur more. The connection reliability by the electric path is further improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a main part of a magnetic tape device according to the present invention.

FIG. 2 is a partially cutaway plan view showing a winding holder and an electric path in a developed state.

FIG. 3 is a schematic side view of the same.

FIG. 4 is an enlarged plan view of a connection circuit board.

5 is a cross-sectional view of a portion taken along the line VV of FIG.

FIG. 6 is an explanatory diagram of a band-shaped adhesive body.

FIG. 7 is an explanatory diagram of a conventional example.

FIG. 8 is an explanatory diagram showing a flat cable or the like as an electric path constituent member used in a conventional magnetic tape device.

FIG. 9 is a cross-sectional view of a flat cable.

FIG. 10 is an explanatory diagram of another conventional example.

FIG. 11 is an explanatory diagram of an electric circuit and the like that can be used in another conventional example.

[Explanation of symbols]

2 cylinders 4 Main board 5 electric circuits 8 Rotary Tran 9 Band-shaped adhesive 21 fixed drum 23 Magnetic head 25 openings 51 flat cable 56 Connection circuit board 57 Electrode surface 58 land 59 recess 71 Winding holder 72 windings 73 Drawer 73a Non-stick part 73b Non-stick part 74 End of drawer 75 Withdrawal start point 76 pasting end point 77 Start point 78 Attached end point 81 Stator 92a Adhesive surface

Claims (6)

[Scope of utility model registration request] 1. An electric circuit for connecting a winding of a stator of a rotary transformer housed in a cylinder having a built-in magnetic head and a circuit pattern of a main board is connected to a winding holder of the stator. In a magnetic tape device, which is formed by a flat cable that connects a drawing portion and the circuit pattern and is inserted into an opening provided in a fixed drum of the cylinder, the electric circuit is replaced with the flat cable, and the winding is wound. By extending the length of the lead portion of the wire and inserting the extended lead portion into the opening, the end portion of the lead portion of the connection circuit board having an electrode surface connected to the circuit pattern It is formed by soldering to the land, and the substantially full length part including the insertion part of the extraction part for the opening is attached to the winding holder at one end. And the other end is attached to the connection circuit board and the intermediate part is attached to the adhesive surface of the band-shaped adhesive body inserted through the opening, and the withdrawal part is withdrawn from the winding holder. Between the starting point and the sticking end point to the band-shaped adhesive body corresponding to the pulling-out starting point, the bending of the band-shaped pressure-sensitive adhesive body has a non-sticking portion having a slack that absorbs by bending deformation that does not generate tension. In addition, the lead-out portion is introduced into the land through a recess formed in the edge of the connection circuit board so as to be recessed toward the land, and corresponds to the introduction start point and the introduction start point. The bending of the band-shaped adhesive body in a state of being adhered to the overhanging piece forming the recess is also absorbed by the bending deformation that does not generate tension between the end point of attachment to the band-shaped adhesive body Has a non-stick part with slack that The magnetic tape device, wherein the material of the band-shaped adhesive body is selected so that the flexibility of the band-shaped adhesive body to which the drawn-out portion is attached is greater than the flexibility of the flat cable. . 2. An electric circuit for connecting a winding of a stator of a rotary transformer housed in a cylinder containing a magnetic head and a circuit pattern of a main board of the winding of the winding drawn out from a winding holder of the stator. In a magnetic tape device, which is formed by a flat cable that connects a drawing portion and the circuit pattern and is inserted into an opening provided in a fixed drum of the cylinder, the electric circuit is replaced with the flat cable, and the winding is wound. It is formed by extending the length of the drawn-out portion of the wire, inserting the extended drawn-out portion into the opening, and connecting the end portion of the drawn-out portion to the circuit pattern. About the entire length including the insertion part is attached to the adhesive surface of the band-like adhesive body which is inserted into the opening and one end of which is attached to the winding holder. Magnetic tape apparatus characterized by being. 3. The pull-out portion has a non-sticking portion between a pulling-out starting point from the winding holder and a sticking end point to the band-shaped adhesive body corresponding to the pulling-out starting point, and the non-sticking portion has a non-sticking portion. The magnetic tape device according to claim 2, wherein the bending of the band-shaped adhesive body is provided with a slack that is absorbed by a bending deformation that does not generate tension. 4. The other end of the adhesive strip is adhered to a connection circuit board having an electrode surface connected to the circuit pattern, and the lead-out portion is provided on a land of the connection circuit board. The magnetic tape device according to claim 2 or 3, wherein an end portion of the magnetic tape device is soldered. 5. The connection circuit board according to claim 4, wherein the connection circuit board has a recess at the edge thereof which is recessed toward the land, and the lead-out portion is introduced into the land through the recess. Magnetic tape device. 6. The overhanging piece portion forming the recess between the lead-out portion and the attachment end point on the strip-shaped adhesive body corresponding to the introduction start point to the connection circuit board. The magnetic tape device according to claim 5, wherein the bending of the band-shaped pressure-sensitive adhesive body adhered to the sheet is provided with a slack that is absorbed by a bending deformation that does not generate tension.