JP2008143555A - Sealing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable repeated sealing in a sealing tool using a band. <P>SOLUTION: The sealing tool 1 is equipped with bands 2 inserted through band inserting holes 25 one by one. When a hook part 11 of either one of the bands 2 is restrained in an inserting hole 26, a gripping annular part H is formed. Under a condition that a cable or the like is passed through this gripping annular part H, when the pulling end part 13 of the band 2 is pulled, the gripping annular part H is contracted to grip the cable or the like. The movement of the band 2 in the direction for relaxing this gripping is checked by a rachet piece 43 locking the band. When the band 2 is cut, a cutting mark is left, and when it is pulled out, an empty band inserting hole 25 is left, and it is found that the cable or the like is taken out of the sealing tool 1. When the cable or the like is removed from the sealing tool 1 for repairing or the like, as the cable or the like is gripped by using the next band 2, repeated sealing by the number of the bands 2 can be possible. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to a technical field of a sealing tool that is attached to a cable or the like and cannot be separated from the cable or the like after being attached, for example, by cutting.

There is a sealing tool that can be used by attaching to a cable or the like, and after the attachment, for example, it cannot be separated from the cable or the like unless it is cut, so that the presence or absence of removal or opening can be detected.
Many of them have been proposed using bands. For example, it is disclosed in JP-A-9-127877, JP-A-2002-37314, JP-A-2004-244076, and the like.
Japanese Patent Laid-Open No. 9-127877 JP 2002-37314 A Japanese Patent Laid-Open No. 2004-244076

By the way, there is a case where a sealing function is given to the substrate case itself that accommodates the control board to improve security against unauthorized replacement or modification of the control board.
Some of these substrate cases are designed to leave a trace of unsealing after an appropriate number of times of unsealing. In other words, the opening and sealing can be repeated up to a predetermined number of times.

  When using such a board case, there is a demand to use a sealing tool for the wiring connected to the control board for the purpose of further improving the security, so that opening and sealing can be repeated up to the same number of times as the board case. there were.

  However, since all of the sealing tools using conventional bands are premised on one-time use, it has been impossible to repeatedly seal with the same sealing tool. The present invention aims to meet such a demand.

The sealing tool according to claim 1 is:
A plurality of bands provided with hooks at one end;
A band insertion hole for inserting the band one by one; and an insertion hole for restraining the inserted hook part when the hook part is inserted beyond a restraining depth; A base block made of a synthetic resin that forms a grip ring portion in cooperation with a portion extending from the insertion hole of the band to the band insertion hole when restrained by a hole,
An attachment means for irreversibly attaching the base block to the plate member;
The band is allowed to move in the direction in which the grip ring is reduced, but the movement in the opposite direction is provided with a ratchet piece that holds the tip locked to the band and blocks each band insertion hole. It is housed in a base block, and at least in the state where the base block is attached to the plate member, it comprises an internal metal fitting that cannot be removed from the base block.

  By attaching the base block to the plate member irreversibly by the attaching means, the sealing tool is irreversibly attached to the plate member. And at least in a state where the base block is attached to the plate member, the internal metal fittings accommodated in the base block cannot be removed from the base block. Note that “irreversibly” means that the sealing tool (for example, the attaching means) or the plate member cannot be removed unless it is destroyed. “Unremovable” of the internal metal fitting has the same meaning.

  A plurality of bands are inserted one by one into the band insertion holes of the base block. The base block has one insertion hole for each band, that is, the same number of insertion holes as the band insertion holes.

  When the hook part of any one band is inserted into the insertion hole beyond the restriction depth and restrained, the part extending from the insertion hole of the band to the band insertion hole and the base block cooperate to form a grip ring part. To do. When the other end portion of the band (the end portion where the hook portion is not provided) is pulled while the cable is passed through the grip ring portion, the grip ring portion is reduced, so that the cable or the like can be gripped. The ratchet piece allows movement of the band in the direction of reducing the grip ring, but conversely, that is, movement in the direction of loosening the grip of the cable or the like is prevented by locking the tip to the band. Therefore, the band once holding the cable or the like does not loosen.

  In order to remove the cable or the like gripped by the gripping ring portion from the sealing tool in this manner, the band that grips the cable must be cut. Then, the cut marks remain, and even if the band is removed, an empty band insertion hole remains, so that it can be understood that the cable or the like has been removed from the sealing tool.

  When the cable or the like is removed from the sealing tool for repair or the like, the cable or the like is gripped as described above using the next band after the repair or the like is completed. In this way, it is possible to repeatedly seal as many as the number of bands.

  Although it is possible to provide a functional portion corresponding to the ratchet piece as a part of the base block, in that case, the base block, that is, the sealing tool is enlarged, which is not preferable. Therefore, in the present invention, a combination structure of a synthetic resin base block and an internal metal fitting is employed to achieve miniaturization.

  The inner metal fitting may be integrated with the base block by, for example, insert molding. However, there is an advantage that the structure of the molding die for the base block is not complicated when both are manufactured and combined separately. In that case, as described in claim 2, the inner metal fitting is accommodated in an accommodation hole opened in a portion of the base block facing the plate member, and the base block is attached to the plate member in the state where the base block is attached to the plate member. The opening may be closed by a plate member so that it cannot be removed from the base block.

  According to a third aspect of the present invention, the band is provided with a recess, and the ratchet piece does not prevent movement of the band in a range in which a tip of the ratchet piece is located in the recess. If it puts, it will become easy to perform an assembly work by positioning the tip of a ratchet piece in a crevice at the time of an assembly. In particular, when applied to the configuration of claim 2, the force for pushing the internal metal fitting when the internal metal fitting is accommodated in the accommodation hole of the base block is greatly reduced.

  5. The sealing tool according to claim 4, wherein the base block has a hook portion side protruding from the band insertion hole in a direction in which the plate member to which the base block is attached and the one end portion are separated from each other. 4. The sealing device according to claim 1, wherein an inclination imparting portion for inclining the portion is provided, so that the gap between the plate member and the end of the band on the hook portion side can be increased. , It becomes easier to pinch the end. Therefore, it becomes easy to perform the operation | work which inserts a hook part in an insertion hole and forms a holding | grip ring part. In addition, since the portion of the band that protrudes from the band insertion hole is inclined upward, the cable or the like placed here fits in the lower part of the inclination, so that it is easy to perform the work of forming the grip ring also on this surface. .

  The sealing tool according to claim 5 is the sealing tool according to any one of claims 1 to 4, wherein the base block is transparent, so that the internal state of the grip ring and the base block can be easily confirmed. it can.

Next, embodiments of the present invention will be described based on examples of the present invention. The present invention is not limited to the following examples and the like, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.
[Example 1]
Since the sealing tool 1 of the present embodiment is composed of the bands 2 (four) shown in FIG. 1, the base block 3 shown in FIG. 2, and the internal metal fitting 4 shown in FIG. 3, these structures will be described first.

  As shown in FIG. 1, a hook portion 11 is provided at one end of the band 2. The hook portion 11 includes a connection base portion 11a that is thicker than the band portion 10 of the band 2, and an elastic hook 11b that is substantially U-shaped and has one end connected to the connection base portion 11a and the other end being a free end. .

A pair of pull-in restricting projections 12 projecting to the side of the band portion 10 are provided at positions appropriately separated from the hook portion 11.
The tension end 13 which is the other end of the band 2 is made thicker than the band portion 10, and the ridges 14 along the width direction of the band portion 10 are formed on the front and back of the portion adjacent to the tension end 13. Is provided.

In addition, between the ridge 14 and the pull-in restricting protrusion 12 (from the ridge 14 rather than the middle), the thickness of the band portion 10 is reduced to form a recess 15.
The band 2 is a molded product of synthetic resin, and the band portion 10 has a bendable elasticity.

The base block 3 is a molded product of a transparent synthetic resin (polycarbonate in this embodiment).
As shown in FIG. 2, the base block 3 is a member having an L-shaped cross section including a horizontal portion 20 and a vertical portion 21, and a pair of flange portions 22 serving as attachment means are connected to both ends of the horizontal portion 20. It is installed.

Further, a rib 24 having an arcuate inclined surface is disposed at a corner portion between the horizontal portion 20 and the vertical portion 21.
The horizontal portion 20 is provided with four band insertion holes 25 through which the bands 2 are inserted one by one, and the vertical portion 21 is provided with four insertion holes 26 corresponding to the respective band insertion holes 25.

  The corresponding band insertion hole 25 and insertion hole 26 are in communication with each other by a band groove 28 provided in the bottom 27 of the base block 3. The insertion hole 26 is provided with a locking projection 26a (see FIG. 5B for the detailed structure) for restraining the hook portion 11 of the band 2.

  Further, the bottom 27 is provided with a shallow groove 29 for accommodating the substrate portion 41 (see FIG. 3) of the inner metal fitting 4 and a fitting groove 30 into which the fitting piece 42 (see FIG. 3) of the inner metal fitting 4 is inserted. It has been. The shallow groove 29 and the fitting groove 30 constitute an accommodation hole.

  As shown in FIG. 3, the internal metal fitting 4 includes a board portion 41, five fitting pieces 42 substantially perpendicular to the board portion 41, and a folded ratchet piece 43 disposed between the fitting pieces 41. In the fitting piece 42, a return piece 42a is cut and raised.

By assembling the band 2 and the internal metal fitting 4 to the base block 3, the sealing tool 1 having the configuration shown in FIG. 4 is completed.
The assembly procedure is as follows. First, each band 2 is inserted into the band insertion hole 25 of the base block 3 from the tension end portion 13, and the respective recesses 15 are positioned in the vicinity of the shallow grooves 29. Next, the inner metal fitting 4 is inserted from the bottom 27 side of the base block 3, the fitting piece 42 is pushed into the fitting groove 30, and the substrate portion 41 is fitted into the shallow groove 29. As a result, the return piece 42a of the fitting piece 42 is difficult to remove from the inner surface of the fitting groove 30, so that the internal fitting 4 cannot be easily removed. Further, the tip of each ratchet piece 43 is in a position where it enters the corresponding recess 15 of the band 2 (see FIG. 5B).

  When the work of assembling the internal metal fitting 4 to the base block 3 is performed, if the tip of the ratchet piece 43 is positioned in the recess 15, the force for pushing the internal metal fitting 4 is greatly reduced.

  Since the pull-in restricting projection 12 is locked to the edge of the band insertion hole 25 when the pulling end portion 13 of the band 2 is pulled excessively, the state in which the appropriate length of the band portion 10 has come out of the band insertion hole 25 is obtained. Secure.

  The sealing tool 1 assembled in this way is used by being attached to a plate member (for example, a control board) 50 as illustrated in FIG. For the attachment, the flange portion 22 is pushed into the attachment hole 51 provided in the plate member 50, and the flange portion 22 that has passed through the attachment hole 51 while elastically deforming is elastically restored. By locking it.

  Although details are not shown in detail, the plate member 50 is sealed in, for example, a substrate case and has a structure in which a tool or the like cannot be inserted into the back surface side of the plate member 50. The part 22 cannot be deformed and removed from the mounting hole 51, that is, the sealing tool 1 cannot be removed from the plate member 50. Therefore, in order to remove the sealing tool 1 from the plate member 50, the sealing tool 1 (for example, the collar part 22) must be destroyed.

  Further, in the state where the sealing tool 1 is attached to the plate member 50 in this way, the bottom 27 of the base block 3 is in close contact with the surface of the plate member 50, so that the internal metal fitting 4 accommodated in the base block 3 is attached. It cannot be removed from the base block 3.

In order to hold the cable or the like with this sealing tool 1, that is, to seal it, the cable or the like is placed on the lateral portion 20.
At this time, as shown in FIG. 5 (b), the band portion 10 protruding from the band insertion hole 25 of the band 2 has an inclination of the edge 20 a of the band insertion hole 25, the band insertion hole 25, and the band groove 28. By the inclination of the ceiling portion 20b of the connecting portion, the hook portion 11 side is inclined so as to be higher. For this reason, if a cable or the like is placed on the inclined band portion 10, the cable or the like is accommodated in the lower portion according to the inclination, and thus the operation is easy to perform.

  Next, when the hook portion 11 of any one of the bands 2 is inserted into the insertion hole 26, the elastic hook 11 b is locked to the locking protrusion 26 a and the hook portion 11 is restrained by the insertion hole 26. As a result, as shown in FIG. 5 (e), the portion extending from the insertion hole 26 of the band 2 to the band insertion hole 25 and the base block 3 cooperate to form the grip ring portion H.

  Then, when the pulling end portion 13 of the band 2 is pulled in a state where the cable or the like is passed through the grip ring portion H, the grip ring portion H is reduced, so that the cable or the like can be gripped. At this time, the ratchet piece 43 allows the movement of the band portion 10 in the direction of reducing the grip ring H, but conversely, that is, the movement in the direction of loosening the grip of the cable or the like causes the tip to engage the band portion 10. Stop. Therefore, the band 2 once holding the cable or the like does not loosen.

  In order to remove the cable or the like gripped by the grip ring portion H from the sealing tool 1 in this way, the band 2 gripping the cable must be cut. Then, the cutting trace remains, and even if the band 2 is removed, an empty band insertion hole 25 remains, so that it can be seen that the cable or the like has been removed from the sealing tool 1.

  When the cable or the like is removed from the sealing tool 1 for repair or the like, the cable or the like is gripped as described above using the next band 2 after the repair or the like is completed. In this way, it is possible to repeatedly seal as many as the number of bands 2.

  As described above, in the sealing device 1 of the present embodiment, the hook portion 11 of any one band 2 is inserted into the insertion hole 26 beyond the restraining depth at which the elastic hook 11b is locked to the locking protrusion 26a. When inserted and restrained, the portion extending from the insertion hole 26 of the band 2 to the band insertion hole 25 and the base block 3 cooperate to form the grip ring portion H. When the pulling end portion 13 of the band 2 is pulled while the cable or the like is passed through the grip ring portion H, the grip ring portion H is reduced, so that the cable or the like can be gripped. The ratchet piece 43 allows the movement of the band 2 in the direction of reducing the grip ring H, but conversely, that is, the movement in the direction of loosening the grip of the cable or the like prevents the band 2 from being locked by locking the tip to the band 2. Therefore, the band 2 once holding the cable or the like does not loosen.

  In order to remove the cable or the like gripped by the grip ring portion H from the sealing tool 1 in this way, the band 2 gripping the cable must be cut. Then, the cutting trace remains, and even if the band 2 is removed, an empty band insertion hole 25 remains, so that it can be seen that the cable or the like has been removed from the sealing tool 1.

  When the cable or the like is removed from the sealing tool 1 for repair or the like, the cable or the like is gripped as described above using the next band 2 after the repair or the like is completed. In this way, it is possible to repeatedly seal as many as the number of bands 2.

  The inner metal fitting 4 is accommodated in a shallow groove 29 and a fitting groove 30 opened in a portion facing the plate member 50 of the base block 3, and when the base block 3 is attached to the plate member 50, the inner metal member 4 is shallow by the plate member 50. Since the opening of the groove 29 and the fitting groove 30 is closed, it cannot be removed from the base block 3. Therefore, it is not possible to loosen the band 2 that forms the grip ring portion H by removing the internal metal fitting 4.

Further, since the base block 3 is transparent, the internal state of the grip ring portion H and the base block 3 can be easily confirmed, and the cutting of the band 2 can be easily found.
The band 2 is provided with a recess 15, and the ratchet piece 43 is configured not to block the movement of the band in a range where the tip of the ratchet piece 43 is located in the recess 15. By positioning the tip in the recess 15, the assembling work is facilitated. In particular, when the inner metal fitting 4 is accommodated in the base block 3, if the tip of the ratchet piece 43 is positioned in the recess 15, the force for pushing the inner metal fitting 4 is greatly reduced.

  In addition, the band 2 before the hook portion 11 is restrained by the insertion hole 26 and the grip ring portion H is formed (that is, the unused band) is the inclination of the edge 20a of the band insertion hole 25, the band insertion hole 25, and the band. By the inclination of the ceiling portion 20b of the connecting portion of the groove 28, the portion protruding from the band insertion hole 25 is inclined so that the hook portion 11 side becomes higher.

For this reason, if a cable or the like is placed on the inclined band portion 10, the cable or the like is accommodated in the lower portion according to the inclination, and thus the operation is easy to perform. Moreover, the space | interval of the board member 50 and the edge part by the side of the hook part 11 of the band 2 can be enlarged, and it becomes easy to pinch the edge part. Therefore, it becomes easy to perform the operation | work which inserts the hook part 11 in the insertion hole 26, and forms the holding | grip ring part H. FIG.
[Example 2]
The sealing tool 1a of this embodiment is different from that of the first embodiment in that a band 2a having a shape shown in FIG. 6 is used. However, since the other configuration is the same as that of the first embodiment, the same reference numerals as those of the first embodiment are used and the description thereof is omitted.

  As shown in FIG. 6, the band 2a of the present embodiment is provided with a U-turn portion 10a at an end portion where the hook portion 11 of the band portion 10 is connected. Further, instead of the pull-in restricting protrusion 12, an overhanging piece 10b is provided adjacent to the U-turn portion 10a.

  The assembly of the sealing tool 1a, the attachment to the plate member 50, the usage method after the attachment, and the like are the same as those in the first embodiment, but the hook portion 11 is restrained by the insertion hole 26 and held as shown in FIG. When the ring portion H is formed, the overhanging piece 10 b is locked to the restriction projection 21 a erected on the vertical portion 21 of the base block 3. Then, the pulling force for pulling the pulling end 13 to pull the pulling end 13 to reduce the diameter of the grip ring H and grip the cable or the like acts only on the protruding piece 10b locked to the restricting protrusion 21a. . Therefore, it is possible to prevent the pulling force from reaching the hook portion 11 to deform or break the hook portion 11.

  In addition, in the band 2a before the hook portion 11 is restrained by the insertion hole 26 and the grip ring portion H is formed (that is, the unused portion), the overhanging piece 10b is similar to the pull-in restricting projection 12. It is locked to the edge of the band insertion hole 25 to ensure that the appropriate length of the band portion 10 is out of the band insertion hole 25.

Since the U-turn portion 10a can be used as a knob in the operation of inserting the hook portion 11 into the insertion hole 26, this operation is easy to perform.
Also, when removing the cable etc. from the sealing device 1a for repair etc., if the vicinity of the U-turn part 10a protruding from the base block 3 of the band 2a holding the cable etc. is cut with a nipper etc. Etc. can be prevented from being damaged or cut.

In addition, there are the same effects as in the first embodiment.
[Example 3]
In the first and second embodiments, the protruding direction of the pair of flanges 22 is outward (back-to-back), but this can be reversed inward (face-to-face). Will be described. In addition, about the part similar to Example 1 or 2, the description is abbreviate | omitted using the same code | symbol as Example 1,2.

  As shown in FIG. 8, in the sealing device 1 b of the present embodiment, the base block 3 is provided with a protruding portion 45 on the lateral portion 20, and a flange portion 22 a is continuously provided on the lower surface of the protruding portion 45. ing. As described above, the pair of flange portions 22a protrude in the direction in which the tips of the two approach each other, that is, inward.

  Further, when the sealing member 1b is attached to the plate member 50 on the lower surface of the overhanging portion 45, it is fitted into a fitting hole provided in the plate member 50 to prevent lateral movement after positioning and attachment. The pin 46 for standing up is erected.

The overhanging portion 45 is formed with a hole 47 formed through a part of the mold (portion for forming the flange portion 22a) during molding.
If the hole 47 is left open, a tool or the like may be inserted from the hole 47 to unlock the hook portion 22a.

  For this purpose, a closing piece 48 is provided on the internal metal fitting 4a of this embodiment as shown in FIG. The closing piece 48 closes the hole 47 as shown in FIG. 8A when the inner metal fitting 4a is assembled to the base block 3. Therefore, there is no fear of the above-mentioned locking release.

  In the first and second embodiments, the fitting piece 42 and the ratchet piece 43 are extended from the same side of the substrate portion 41. However, in the inner metal fitting 4a of this embodiment, the fitting piece 42 and the ratchet piece 43 Is extended from each of two opposite sides of the substrate portion 41. Further, the cut-up direction of the return piece 42a provided on the fitting piece 42 is also opposite to that in the first and second embodiments. However, these functions are the same as those of the first and second embodiments, and it is only necessary to appropriately select whether the present embodiment or the first or second embodiment is used.

  The assembly of the sealing tool 1b, the attachment to the plate member 50, the usage method after the attachment, and the like are the same as those in Examples 1 and 2, but are well shown in FIGS. As shown, the pair of flange portions 22 a are connected to the lower surface of the overhang portion 45, and the flange portion 22 a is hidden by the overhang portion 45 after being attached to the plate member 50. For this reason, it is extremely difficult to unlock the collar portion 22a using a tool or the like, and the security effect is high.

  In addition, there are the same effects as in the first embodiment.

The top perspective view (a) from the tension | pulling end part side of the band of the sealing tool of Example 1, the top perspective view (b) from the hook part side, a top view (c), a left side view (d), a front view ( e) Right side view (f), bottom view (g), bottom perspective view (h) from the tension end side, bottom perspective view (i) from the hook side. The top perspective view (a) from the left side of the base block of the sealing tool of Example 1, the top perspective view (b) from the right side, the top view (c), the left side view (d), the front view (e), the right side A surface view (f), a bottom view (g), a bottom perspective view (h) from the left side, and a bottom perspective view (i) from the right side. Top perspective view (a) from the left side of the internal fitting of the sealing tool of the embodiment, top perspective view (b) from the right side, top view (c), left side view (d), front view (e), right side Figure (f), bottom view (g), bottom perspective view (h) from the left side, bottom perspective view (i) from the right side. Top perspective view (a), plan view (b), top perspective view (c), front view (d), left side view (e), right side view (from right side) of the sealing tool of Example 1 f), bottom view (g). Plan view (a), front view (b), AA cross-sectional view (c), (B) enlarged view (d) in a state in which one grip ring is formed with the sealing tool of Example 1 , CC sectional drawing (e), D section enlarged view (f) of (e). The top perspective view (a) from the tension | pulling end part side of the band of the sealing tool of Example 2, the top perspective view (b) from the hook part side, a top view (c), a left side view (d), a front view ( e) Right side view (f), bottom view (g), bottom perspective view (h) from the tension end side, bottom perspective view (i) from the hook side. A top perspective view (a) from the left side, a top perspective view (b) from the right side, a left side view (c), a right side view (d) in a state in which one grip ring is formed with the sealing tool of Example 1. ). Plan view (a), top perspective view (b), left side view (c), front view (d), right side view (e), bottom view (f), bottom perspective view (Fig. g). Plan view (a), top perspective view (b), left side view (c), front view (d), right side view (e), bottom view (f), bottom surface of the internal fitting of the sealing device of Example 3 Perspective view (g).

Explanation of symbols

1, 1a, 1b ... sealing tool,
2, 2a ... band,
3 ... Base block,
4, 4a ... internal metal fittings,
10 ... belt part,
11 ... hook part,
12 ... Retraction restriction protrusion,
13 ... tensile end,
15 ... recess,
21 ... vertical portion,
22 ... buttocks,
25: Band insertion hole,
26 ... insertion hole,
26a ... locking projection,
28 ... Band groove,
29 ... Shallow groove,
30 ... fitting groove,
43 ... Ratchet piece,
50 ... plate member,
H: Gripping ring part.

Claims (5)

A plurality of bands provided with hooks at one end;
A band insertion hole for inserting the band one by one; and an insertion hole for restraining the inserted hook part when the hook part is inserted beyond a restraining depth; A base block made of a synthetic resin that forms a grip ring portion in cooperation with a portion extending from the insertion hole of the band to the band insertion hole when restrained by a hole,
An attachment means for irreversibly attaching the base block to the plate member;
The band is allowed to move in the direction in which the grip ring is reduced, but the movement in the opposite direction is provided with a ratchet piece that holds the tip locked to the band and blocks each band insertion hole. A sealing tool comprising: an internal metal fitting that is housed in a base block and cannot be removed from the base block when at least the base block is attached to the plate member. The internal bracket is
The base block is accommodated in an accommodation hole that is opened in a portion facing the plate member,
2. The sealing device according to claim 1, wherein when the base block is attached to the plate member, the opening is closed by the plate member and cannot be removed from the base block. The band is provided with a recess,
3. The sealing device according to claim 1, wherein the ratchet piece does not block movement of the band in a range in which a tip of the ratchet piece is located in the recess. The base block has an inclination imparting portion for inclining a portion on the hook portion side protruding from the band insertion hole in a direction in which the plate member to which the base block is attached and the one end portion are separated from each other. The sealing tool according to claim 1, 2 or 3, wherein the sealing tool is provided.   The sealing tool according to any one of claims 1 to 4, wherein the base block is transparent.

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