CN113453995A

CN113453995A - Sealing tape

Info

Publication number: CN113453995A
Application number: CN201980091257.3A
Authority: CN
Inventors: 高木良昌
Original assignee: Takagi Industrial Co Ltd
Current assignee: Takagi Industrial Co Ltd
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2021-09-28
Anticipated expiration: 2039-02-12
Also published as: CN113453995B; WO2020165958A1; AU2019429303A1; KR20210124225A

Abstract

A sealing tape having high sealing performance is provided. When the convex portion 5 of the band-shaped portion 2 inserted into the insertion space 3a is fitted into the concave portion 3f formed in the first wall 3b, the band-shaped portion 2 is pressed toward the locking piece 3g by the convex portion 5, and the tip 3g2 of the locking piece 3g comes into contact with the second wall 3 h. Thus, even if a pin or the like is inserted from the lead-out hole 3e and an attempt is made to move the locking piece 3g toward the second wall 3h, the locking piece 3g cannot be moved, and therefore the locked state between the locking tooth 9 and the locking piece 3g cannot be released.

Description

Sealing tape

Technical Field

The present invention relates to a sealing tape used for inserting the tape through a portion to be sealed for theft prevention, unauthorized use, or the like.

Background

Conventionally, a sealing material described in patent document 1 has been proposed as such a sealing tape. The seal has a band-shaped engaging piece 1 having a first engaging mechanism 3 with a saw-toothed shape on the back surface thereof, and an engaging portion 2 inserted through the engaging piece 1 and locked in a fastened state. Further, a second engaging mechanism 9 is provided inside the engaging portion 2, and the second engaging mechanism 9 is constituted by an engaging claw that engages with the first engaging mechanism 3. Then, the engagement piece 1 is wound around the mouth portion 14a of the bag 14 to be sealed, and the free end portion 1a of the engagement piece 1 is inserted through the insertion hole 8 of the engagement portion 2 and is drawn out from the hole facing the insertion hole 8. Thereby, the first engaging mechanism 3 engages with the second engaging mechanism 9 of the engaging portion 2, and the mouth portion 14a of the bag 14 is sealed.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2005-187033

Disclosure of Invention

Problems to be solved by the invention

However, in the above-described conventional seal tape, even when the first engagement mechanism 3 is engaged with the second engagement mechanism 9, a gap is formed between the second engagement mechanism 9 and the inner wall of the engagement portion 2 (fig. 9 of patent document 1), and since the second engagement mechanism 9 can be pushed down toward the inner wall, a pin or the like can be inserted from a hole facing the insertion hole 8, and the engaged state of the second engagement mechanism 9 and the first engagement mechanism 3 can be released.

That is, the conventional seal tape has a problem of low sealing (sealing) performance.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a seal tape having high sealing performance.

Means for solving the problems

In order to achieve the above object, a sealing tape (1) of the present invention is characterized by having, a band-shaped portion (2);

a plurality of locking teeth (9) which are arranged on one surface (2a) of the belt-shaped part (2) along the length direction;

a head (3) formed toward one end (2c) of the band-shaped portion (2);

a convex portion (5) formed on the other surface (2b) on the side opposite to the one surface (2a) between the head portion (3) and the other end (2d) of the belt-like portion (2);

an insertion space (3a) formed inside the head (3) for inserting the band-shaped portion (2) from the other end (2 d);

an insertion hole (3d) for inserting the other end (2d) into the insertion space (3 a);

a lead-out hole (3e) for leading out the other end (2d) inserted into the insertion space (3a) from the insertion space (3 a);

a concave part (3f) which is formed on the first wall (3b) forming the insertion space (3a) and is embedded into the convex part (5) of the strip-shaped part (2) inserted into the insertion space (3 a);

a locking piece (3g) which is formed on a second wall (3h) opposite to the first wall (3b) through the insertion space (3a) and locks a locking tooth (9) of the belt-shaped part (2) inserted through the insertion space (3 a);

the locking piece (3g) can swing with a predetermined position of the second wall (3h) as a base (3g1), and the front end (3g2) thereof protrudes to the insertion space (3a) towards the extraction hole (3e),

when a predetermined locking tooth (9) of a plurality of locking teeth (9) of a band-shaped portion (2) inserted into an insertion space (3a) is locked to a locking piece (3g) and a convex portion (5) is fitted to a concave portion (3f), the tip (3g2) of the locking piece (3g) is in a state of abutting against a second wall (3 h).

When a predetermined locking tooth among the plurality of locking teeth inserted into the band-shaped portion of the insertion space is locked to the locking piece and the protruding portion is fitted to the recessed portion, the tip end of the locking piece is in a state of abutting against the second wall, and therefore, even if a pin or the like is inserted from the draw-out hole and the locking piece is moved in the direction of the second wall, the locking piece cannot be moved, and the locked state between the locking tooth and the locking piece cannot be released.

Further, since the convex portion of the band-shaped portion is fitted in the concave portion of the first wall, the band-shaped portion cannot be drawn out from the drawing hole in this state.

Therefore, the sealing performance can be improved.

Furthermore, the sealing tape (1) according to the first feature of the invention of the present application is characterized as a second feature,

when a predetermined locking tooth (9) of a plurality of locking teeth (9) of a band-shaped portion (2) inserted into an insertion space (3a) is locked to a locking piece (3g) and a convex portion (5) is fitted to a concave portion (3f), the tip (3g2) of the locking piece (3g) is in a state of abutting against a second wall (3h), and the locking tooth (9) of the plurality of locking teeth (9) facing the locking piece (3g) is in a state of abutting against the locking piece (3 g).

Since the locking tooth of the plurality of locking teeth opposed to the locking piece is in a state of abutting against the locking piece, even if the pin or the like is inserted from the insertion hole, the entry of the pin or the like is prevented by the locking tooth of the abutting locking piece and the locking piece, and the locked state of the locking tooth and the locking piece cannot be released.

Therefore, the sealing performance can be further improved.

Further, the sealing tape (1) of the invention of the present application is, in the first or second feature described above, a third feature,

in a state where the band-shaped portion 2 is not inserted into the insertion space 3a, the distance between the first wall 3b and the locking piece (3g) is narrowed from the base (3g1) of the locking piece (3g) to the tip (3g 2).

In the state where the band-shaped portion is not inserted into the insertion space, the distance between the first wall and the locking piece is narrowed from the base of the locking piece to the vicinity of the tip, so that the band-shaped portion inserted from the insertion hole can be pressed against the locking piece formed on the second wall in the insertion space, and the tip of the locking piece can be pressed against the second wall.

Therefore, the state in which the tip of the locking piece abuts against the second wall can be firmly maintained, and the sealing performance can be further improved.

In addition, the seal tape (1) of the invention of the present application, in any one of the first to third features described above, is characterized as a fourth feature,

the center (3e1) of the lead-out hole (3e) is offset from the center (3d1) of the insertion hole (3d) toward the second wall (3 h).

Since the center of the lead-out hole is displaced from the center of the insertion hole toward the second wall, a portion of the band-shaped portion inserted from the insertion hole and led out from the lead-out hole, which portion is located in the insertion space, can be pressed against the locking piece formed on the second wall, and the tip of the locking piece can be pressed against the second wall.

Further, the seal tape (1) of the invention of the present application, in any one of the first to fourth features described above, is characterized as a fifth feature,

the first wall (3b) is formed such that the band-shaped portion (2) located in the insertion space (3a) is curved with a surface (2b1) closer to a predetermined portion of the insertion hole (3d) than the convex portion (5) fitted in the concave portion (3f) as an apex.

Since the first wall is formed such that the band-shaped portion located in the insertion space is curved with the surface of the predetermined portion closer to the insertion hole than the convex portion fitted to the concave portion as an apex, the convex portion can be strongly pressed against the inner wall of the concave portion, and the fitted state of the convex portion and the concave portion can be firmly maintained.

Therefore, there is no fear that the fitting state of the convex portion and the concave portion is released, and the band-shaped portion may be drawn out from the drawing hole. That is, since the length of the band-shaped portion drawn out from the drawing hole can be kept constant, when the length thereof changes, it can be inferred that an attempt to release the seal has been made.

However, the above-mentioned parenthesized symbols show the correspondence with the embodiments described later, and do not limit the invention of the present application.

Effects of the invention

The sealing tape of the present invention can provide a sealing tape having high sealing performance.

Drawings

Fig. 1 is a plan view showing a surface of a sealing tape according to an embodiment of the present invention partially omitted.

Fig. 2 is a front view of the sealing band of fig. 1.

Fig. 3 is a rear view of the sealing strip of fig. 1.

Fig. 4 is an enlarged longitudinal sectional view of a head portion constituting the sealing tape shown in fig. 2.

Fig. 5 is a partially enlarged view of a band portion constituting the seal tape shown in fig. 2.

Fig. 6 is an explanatory diagram illustrating a state in which the head portion shown in fig. 4 is inserted into the band portion.

Fig. 7 is an explanatory view showing a state in which the convex portion of the band-shaped portion is fitted in the concave portion of the first wall and the tip of the locking piece abuts against the second wall.

Description of the reference numerals

1, sealing a belt; 2a band-shaped portion; 2a back side; 2b surface; 2c one end; 2d the other end; 2e a locking region; 2f a severable region; 2g of an antiskid area; 3, a head part; 3a through space; 3b a first wall; 3b1 projection; 3b2 vertical walls; 3d inserting the hole; 3d1 center; 3e leading out the hole; 3e1 center; 3f a recess; 3g of clamping sheet; 3g1 base; 3g2 front end; 3g3 sliding surface; 3g4, 3g5 edges; 3h second wall; 3i gap; 4, labeling; 5a convex part; 6 a cutting position indicator; 7 anti-slip projections; 9, clamping stop teeth; 9a locking part; 9b tooth top; v dotted line.

Detailed Description

A sealing tape according to an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a plan view of the sealing tape according to the present embodiment with a surface portion omitted, and fig. 2 is a front view of the sealing tape shown in fig. 1. Fig. 3 is a rear view of the sealing band shown in fig. 1, and fig. 4 is an enlarged view of a longitudinal section of a head constituting the sealing band shown in fig. 2. Fig. 5 is a partially enlarged view of a band portion constituting the seal tape shown in fig. 2, and fig. 6 is an explanatory view showing a state in which the band portion is inserted into the head portion shown in fig. 4. Fig. 7 is an explanatory view showing a state in which the convex portion of the band-shaped portion is fitted in the concave portion of the first wall and the tip of the locking piece abuts on the second wall.

[ outline of the seal tape construction ]

First, the outline of the structure of the seal tape 1 of the present embodiment will be described.

As shown in fig. 1 to 3, the seal tape 1 of the present embodiment includes a tape-shaped portion 2, a plurality of locking teeth 9 arranged in the longitudinal direction on a back surface (one surface) 2a of the tape-shaped portion 2, a head portion 3 formed toward one end 2c of the tape-shaped portion 2, and a convex portion 5 formed on a surface (other surface) 2b between the head portion 3 and the other end 2d on the opposite side to the back surface (one surface) 2 a. As shown in fig. 4, the head 3 includes an insertion space 3a for inserting the band-shaped portion 2 from the other end 2d, an insertion hole 3d for inserting the other end 2d into the insertion space 3a, and a lead-out hole 3e for leading out the other end 2d inserted into the insertion space 3a from the insertion space 3 a. Further, a concave portion 3f is formed in a first wall 3b forming the insertion space 3a, a convex portion 5 of the band-shaped portion 2 inserted into the insertion space 3a is fitted into the concave portion 3f, a locking piece 3g is formed in a second wall 3h facing the first wall 3b with the insertion space 3a therebetween, and the locking tooth 9 of the band-shaped portion 2 inserted into the insertion space 3a is locked to the locking piece 3 g.

The locking piece 3g can swing with one end (lower portion in fig. 4) of the second wall 3h facing the insertion hole 3d as a base 3g1, and a tip 3g2 thereof protrudes toward the lead-out hole 3e to the insertion space 3 a. As shown in fig. 7, when a predetermined locking tooth 9 of the plurality of locking teeth 9 of the band-shaped portion 2 inserted through the insertion space 3a is locked to the locking piece 3g and the convex portion 5 of the band-shaped portion 2 is fitted to the concave portion 3f, the tip 3g2 of the locking piece 3g comes into contact with the second wall 3 h. Further, as shown in fig. 4, the center 3e1 of the lead-out hole 3e is displaced from the center 3d1 of the insertion hole 3d toward the second wall 3 h.

[ construction details of seal tape ]

Next, the details of the structure of the seal tape 1 will be explained.

As shown in fig. 1 to 3, the band-shaped portion 2 is formed in a thin and long band shape, a locking region 2e is provided on the back surface 2a, and a plurality of locking teeth 9 are formed at predetermined intervals on the locking region 2 e. As shown in fig. 2 and 3, the locking teeth 9 are arranged along the longitudinal direction of the locking region 2 e. As shown in fig. 5, the locking tooth 9 has a locking portion 9a locked to a tip 3g2 (fig. 4) of the locking piece 3g, a tooth tip 9b formed at a tip (lower end in fig. 5) of the locking portion 9a, and an inclined portion 9c inclined from the tooth tip 9b toward the front surface 2 b. The tooth top 9b is formed at an acute angle, and as shown in fig. 3, the tooth top surface of the tooth top 9b is orthogonal to the back surface 2 a. The locking teeth 9 are formed to have a height H, and the interval between the adjacent locking teeth 9 is set to L. A bottom portion 9d parallel to the back surface 2a is formed between the locking teeth 9 adjacent to each other.

In other words, as shown in fig. 5, each locking tooth 9 is formed in a zigzag shape when viewed from the front. The height H of each tooth crest 9b of each locking tooth 9 is set to a height that does not protrude from the back surface 2a of the belt-shaped portion 2. As shown in fig. 3, the tooth tip 9b of the locking tooth 9 is formed to be slightly shorter than the width of the locking region 2e in the width direction. As shown in fig. 2, the locking region 2e in which the locking teeth 9 are arranged is formed thicker than the portion other than the locking region 2 e.

A projection 5 is formed on the surface 2b of the locking portion 9 a. The convex portion 5 is fitted into a concave portion 3F (fig. 4) formed in the head portion 3, and when the convex portion 5 is fitted into the concave portion 3F, the band-shaped portion 2 cannot be drawn out from the drawing hole 3e in the direction indicated by the symbol F in fig. 6. Further, a label 4 is formed on the left side of the head 3 in the direction of the one end 2c of the band-shaped portion 2. The label 4 is formed in a thin rectangular plate shape, and characters may be written or printed on the front or back surface of the label 4, or a sticker or the like may be attached. The tag 4 is formed with a through hole 8 for inserting a wire, a string, or the like. Further, an arrow-shaped cutting position indicator 6 is formed between the head 3 and the locking region 2e in the band-shaped portion 2. The cutting position indicator 6 indicates a cutting position when the seal tape 1 is cut and released from the seal.

In the present embodiment, the arrow of the cutting position indicator 6 is directed toward the head 3, and a cuttable region 2f is formed between the head 3 and the cutting position indicator 6. When the seal tape 1 is cut and the seal is released, the cuttable region 2f is cut. Further, a slip prevention region 2g is provided at the other end 2d of the belt-shaped portion 2. A plurality of nonslip protrusions 7 are formed on the surface 2b of the nonslip region 2 g. Each of the anti-slip projections 7 is for preventing slipping when pinching and pulling out the other end 2d protruding from the pull-out hole 3e of the head 3. Each of the convex nonslip portions 7 is formed in an ヘ shape with its apex portion directed toward the other end 2d, and each of the convex nonslip portions 7 is formed to slightly protrude from the surface 2b as shown in fig. 2.

As shown in fig. 4, the head 3 is formed in a substantially truncated conical shape, and has opposed

outer surfaces

3m, 3n and front and

back surfaces

3p, 3k, when viewed with the projection 3j formed on the back surface side removed. An insertion space 3a for inserting the band portion 2 is formed to penetrate the head portion 3. An insertion hole 3d into which the other end 2d (fig. 1) of the band-shaped portion 2 is inserted is formed in the rear surface 3k, and the insertion hole 3d communicates with the insertion space 3 a. That is, the insertion hole 3d forms an opening surface (an opening surface at a lower end in fig. 4) that is inserted through one end of the space 3 a. Further, a lead-out hole 3e for leading out the other end 2d of the band-shaped portion 2 inserted into the insertion space 3a is formed through the surface 3p, and the lead-out hole 3e communicates with the insertion space 3 a. That is, the lead-out hole 3e forms an opening surface (an opening surface at an upper end in fig. 4) inserted through the other end of the space 3 a.

A recess 3f to be fitted with the projection 5 (fig. 1 and 2) of the band-shaped portion 2 is formed in the first wall 3b forming the insertion space 3 a. Of the inner walls forming the recess 3f, a side surface 3f2 facing the insertion hole 3d is an opening surface communicating with the insertion hole 3 d. As shown in fig. 7, the convex portion 5 entering from the side surface 3f2 is fitted into the concave portion 3f, the top portion 5a of the convex portion 5 abuts against the inner wall 3f3 of the concave portion 3f facing the top portion 5a, and the outer peripheral surface 5b of the outer peripheral surface of the convex portion 5 facing the lead-out hole 3e abuts against the inner wall 3f1 of the concave portion 3f facing the lead-out hole 3 e. Thereby, the convex portion 5 is prevented from moving toward the lead-out hole 3e, that is, the band-shaped portion 2 is prevented from being led out from the lead-out hole 3 e.

As shown in fig. 4, a second wall 3h is formed inside the head 3, and the second wall 3h faces the first wall 3b with the insertion space 3a interposed therebetween. A protruding portion 3c protruding toward the insertion space 3a is formed at one end (lower end in fig. 4) of the second wall 3h, and a locking piece 3g is formed on the protruding portion 3 c. The locking piece 3g has a base 3g1 as a part of the extension 3c located in the direction of the lead-out hole 3 e. The distal end 3g2 of the locking piece 3g projects toward the lead-out hole 3e to the insertion space 3 a. A gap 3i is formed between the retaining piece 3g and the second wall 3 h.

The seal tape 1 of the present embodiment is formed of a synthetic resin such as nylon 66 or nylon 6, and the locking piece 3g has flexibility. Therefore, the locking piece 3g is tilted toward the second wall 3h when pressed by the locking tooth 9 of the belt-shaped portion 2, and returns to the posture before pressing when the pressing is released. That is, the retaining piece 3g can swing.

Further, the first wall 3b is formed in a tapered shape. In other words, the first wall 3b is inclined toward the lead-out hole 3 e. In this embodiment, the first wall 3b is formed substantially parallel to an imaginary line V connecting the center 3d1 of the insertion hole 3d and the center 3e1 of the lead-out hole 3 e. Further, a second wall 3h is formed perpendicularly with respect to the lead-out hole 3 e. Therefore, as shown in fig. 4, in a state where the band-shaped portion 2 is not inserted into the insertion space 3a, the distance between the first wall 3b and the locking piece 3g becomes narrower from the base 3g1 of the locking piece 3g to the proximal end 3g 2. Further, a vertical wall 3b2 formed vertically from the back surface 3k is formed at an end (lower end in fig. 4) of the first wall 3b toward the insertion hole 3 d. When the convex portion 5 of the belt-shaped portion 2 passes through the side surface 3f2 as the opening surface, it advances between the vertical wall 3b2 and the vertical wall 3b2 and fits into the concave portion 3 f. In fig. 4, only the cutting line of the vertical wall 3b2 located rearward in the drawing among the opposing vertical walls 3b2 is depicted, and the cutting line of the vertical wall 3b2 existing forward in the drawing is not shown. The vertical walls 3b2 are orthogonal to the insertion holes 3d, and the surfaces of the vertical walls 3b2 exposed to the insertion space 3a are parallel to the exposed surfaces of the protrusions 3c exposed to the insertion space 3 a.

Further, a protruding portion 3b1 protruding toward the insertion space 3a is formed at an end (upper end in fig. 4) of the first wall 3b facing the lead-out hole 3 e. As shown in fig. 6 and 7, the corner 3b3 of the lower end of the protruding portion 3b1 is formed to abut against the surface 2b of the band-shaped portion 2 inserted from the insertion hole 3d while guiding it toward the lead-out hole 3 e. The corner 3b3 at the lower end of the protrusion 3b1 serves to press the surface 2b of the strip-shaped portion 2 inserted into the insertion space 3a toward the locking piece 3g, and lock the locking portion 9a to the tip 3g2 of the locking piece 3 g. Further, as shown in fig. 7, the vertical wall 3b2 of the first wall 3b is formed such that the strip-shaped portion 2 located in the insertion space 3a is curved with the surface 2b1 closer to a predetermined portion of the insertion hole 3d than the convex portion 5 fitted with the concave portion 3f as a vertex. In this embodiment, the belt-like portion 2 is bent substantially into a く shape with a surface 2b1 abutting against the vertical wall 3b2 of the first wall 3b as an apex.

In this way, by forcibly bending the band-shaped portion 2, stress due to the bending can be applied to the convex portion 5, so that the convex portion 5 can be strongly pressed against the inner walls 3f1, 3f3 of the concave portion 3 f. This can firmly maintain the fitting state of the convex portion 5 and the concave portion 3 f.

This eliminates the possibility that the fitting state of the convex portion 5 and the concave portion 3f is released and the band-shaped portion 2 may be drawn out from the drawing hole 3 e.

That is, since the length of the band-shaped portion 2 drawn out from the drawing hole 3e can be kept constant, when the length thereof changes, it can be inferred that someone is trying to release the seal.

The exposed surface of the protruding portion 3c is orthogonal to the rear surface 3 k. In this embodiment, the cross sections of the insertion hole 3d and the lead-out hole 3e are formed in rectangular shapes, respectively.

[ method of Using seal tape ]

Next, a method of using the seal tape 1 will be described.

The other end 2d of the band-shaped portion 2 is inserted into a sealing tape insertion hole provided in a sealing object (not shown). Then, the other end 2d inserted through the sealing tape insertion hole is inserted from the insertion hole 3d of the head 3, and the other end 2d protruding from the lead-out hole 3e is led out in the direction indicated by the arrow F in fig. 6. When the slip-preventing area 2g (fig. 1) without the locking tooth 9 passes through the lead-out hole 3e, the locking area 2e reaches the insertion space 3a, and the first locking tooth 9 closest to the other end 2d among the plurality of locking teeth 9 in the locking area 2e is locked to the front end 3g2 of the locking piece 3 g. Then, if the strip portion 2 is continuously drawn out, the first locking tooth 9 and the locking piece 3g which are locked first are unlocked, the locking piece 3g swings toward the second wall 2h by the pressing of the tooth tip 9b of the second locking tooth 9, and when the tooth tip 9b of the second locking tooth 9 goes over the end edge 3g5 which is opposite to the first wall 3b among the end edges of the locking piece 3g, the locking piece 3b returns to the position before the swing by its own restoring force and is locked with the second locking tooth 9. Thereafter, the engagement and the release of the engagement between the third and subsequent locking teeth 9 and the locking piece 3g are repeated in the same manner.

Then, when the belt-shaped portion 2 is continuously drawn out, the convex portion 5 formed on the surface 2b of the belt-shaped portion 2 enters from the side surface 3f2 where the concave portion 3f opens and is fitted into the concave portion 3f, and the convex portion 5 abuts against the inner walls 3f1 and 3f3 of the concave portion 3f (fig. 7). In other words, the convex portion 5 is locked to the concave portion 3 f. Thereby, the band-shaped portion 2 cannot be drawn out from the drawing hole 3 e. Since the height of the convex portion 5 is higher than the depth of the concave portion 3f, when the convex portion 5 is fitted in the concave portion 3f, the surface 2b of the band-shaped portion 2 is in a state of being lifted from the first wall 3b as shown in fig. 7. That is, the belt-like portion 2 is pressed against the locking piece 3g, and the tooth tips 9b of the locking teeth 9 of the sliding surface 3g3 of the locking piece 3g are pressed to further press the locking piece 3g against the second wall 3 h. Thus, of the edges forming the tip 3g2 of the locking piece 3g, the edge 3g4 opposed to the second wall 3h is pressed against the second wall 3h, and the gap 3i (fig. 6) formed between the tip 3g2 of the locking piece 3g and the second wall 3h disappears.

As shown in fig. 7, the belt-like portion 2 is curved into a く shape with a vertex at a surface 2b1 abutting against a vertical wall 3b2 of the first wall 3 b. This causes the convex portion 5 to be pressed more strongly against the concave portion 3f, and thus the fitting state between the convex portion 5 and the concave portion 3f can be maintained firmly. Further, the band-shaped portion 2 strongly presses the locking piece 3g by the stress generated by the bending of the band-shaped portion 2, and the locking piece 3g is strongly pressed against the second wall 3 h. Thereby, the abutting state of the end edge 3g4 of the locking piece 3g with the second wall 3h is firmly maintained.

As shown in fig. 7, when the locking tooth 9 is locked to the locking piece 3g and the convex portion 5 is fitted to the concave portion 3f, a space S is formed between the surface 2b of the band-shaped portion 2 and the first wall 3 b. Thus, even if the tip of a tool such as a screwdriver is inserted through the lead-out hole 3e and the inclined portion 9c of the locking tooth 9 is pressed, and the locked state between the locking tooth 9 and the locking piece 3g is attempted to be released, the band-shaped portion 2 is deformed to escape into the space S, and thus the locked state between the locking tooth 9 and the locking piece 3g cannot be released.

Therefore, since the band-shaped portion 2 cannot be pulled out toward the insertion hole 3d, the sealing performance can be improved.

[ Effect of the embodiment ]

(1) In the seal tape 1 of the above embodiment, when a predetermined locking tooth 9 of the plurality of locking teeth 9 of the band-shaped portion 2 inserted into the insertion space 3a in the head 3 is locked to the locking piece 3g and the convex portion 5 of the band-shaped portion 2 is fitted to the concave portion 3f of the first wall 3b, the tip 3g2 of the locking piece 3g abuts against the second wall 3h facing the first wall 3b, and therefore, even if a pin or the like is inserted from the lead-out hole 3e and the locking piece 3g is moved toward the second wall 3h, the locking piece 3g cannot be moved and the locked state between the locking tooth 9 and the locking piece 3g cannot be released.

Further, since the convex portion 5 of the band-shaped portion 2 is fitted into the concave portion 3f of the first wall 3b, the band-shaped portion 2 cannot be drawn out from the drawing hole 3e in this state.

Therefore, the sealing performance can be improved.

(2) Further, since the locking tooth 9 opposed to the locking piece 3g among the plurality of locking teeth 9 of the band-shaped portion 2 inserted through the insertion space 3a is in a state of abutting against the locking piece 3g, even if a pin or the like is inserted from the insertion hole 3d, the entry of the pin or the like is prevented by the locking tooth 9 abutting against the locking piece 3g and the locking piece 3g, and the locked state of the locking tooth 9 and the locking piece 3g cannot be released.

Therefore, the sealing performance can be further improved.

(3) Further, since the interval between the first wall 3b and the locking piece 3g becomes narrower from the base 3g1 of the locking piece 3g to near the front end 3g2, the band-like portion 2 inserted from the insertion hole 3d can be pressed against the locking piece 3g formed on the second wall 3h in the insertion space 3a, and the front end 3g2 of the locking piece 3g can be pressed against the second wall 3 h.

Therefore, the state in which the distal end 3g2 of the locking piece 3g abuts against the second wall 3h can be firmly maintained, and the sealing performance can be further improved.

(4) Further, since the center 3e1 of the lead-out hole 3e is displaced from the center 3d1 of the insertion hole 3d toward the second wall 3h, a portion of the band-shaped portion 2 inserted from the insertion hole 3d and led out from the lead-out hole 3e, which portion is located in the insertion space 3a, can be pressed against the locking piece 3g formed on the second wall 3h, and the tip 3g2 of the locking piece 3g can be strongly pressed against the second wall 3 h.

(5) Further, since the first wall 3b is formed such that the band-like portion 2 located in the insertion space 3a is curved with the surface 2b1 of a predetermined portion closer to the insertion hole 3d than the convex portion 5 fitted with the concave portion 3f as a vertex, the convex portion 5 can be pressed against the inner walls 3f1, 3f3 of the concave portion, so that the fitted state of the convex portion 5 and the concave portion 3f can be firmly maintained.

Therefore, there is no fear that the fitting state of the convex portion 5 and the concave portion 3f is released and the band-shaped portion 2 may be drawn out from the drawing hole 3 e.

Other embodiments

(1) The gap 3i (fig. 4) formed between the locking piece 3g and the second wall 3H varies depending on the change in the respective numerical values such as the thickness of the locking piece 3g, the shape of the locking piece 3g, the width of the insertion space 3a, the thickness of the band-shaped portion 2, the height of the projection 5, the height H of the locking tooth 9 (fig. 5), and the depth of the recess 3 f. Thus, when the clearance 3i is generated when the locking tooth 9 is locked to the locking piece 3g and the convex portion 5 is fitted to the concave portion 3f by changing the design of at least one of these numerical values, the clearance 3i can be eliminated by modifying the numerical values.

(2) When the engagement tooth 9 is not engaged with the engagement piece 3g when the projection 5 of the band-shaped portion 2 is engaged with the recess 3f of the first wall 3b, it is possible to avoid this by changing at least one of the interval L (fig. 5) of the engagement teeth 9, the number of the engagement teeth 9, the formation position of the foremost engagement tooth 9, and the formation position of the projection 5.

Claims

1. A sealing strip, characterized in that it has:

a belt-shaped portion;

a plurality of locking teeth arranged on one surface of the belt-shaped part along the length direction;

a head portion formed toward one end of the band portion;

a convex portion formed on the other surface on the opposite side to the one surface between the head portion and the other end of the band-shaped portion;

an insertion space formed in the head portion and through which the band portion is inserted from the other end;

an insertion hole for inserting the other end into the insertion space;

a lead-out hole for leading out the other end inserted into the insertion space from the insertion space;

a concave portion formed on a first wall forming the insertion space and fitted to the convex portion of the band-shaped portion inserted into the insertion space;

a locking piece formed on a second wall facing the first wall with the insertion space therebetween and locking the locking tooth of the belt-shaped portion inserted into the insertion space;

the locking piece can swing with a predetermined position of the second wall as a base, and the front end of the locking piece protrudes to the insertion space towards the leading-out hole,

when a predetermined locking tooth of the plurality of locking teeth of the band-shaped portion inserted into the insertion space is locked to the locking piece and the convex portion is fitted to the concave portion, the distal end of the locking piece comes into contact with the second wall.

2. The seal tape according to claim 1, wherein when a predetermined one of the plurality of locking teeth of the band-shaped portion inserted into the insertion space is locked to the locking piece and the convex portion is fitted to the concave portion, a tip end of the locking piece is in a state of abutting against the second wall, and a locking tooth of the plurality of locking teeth, which is opposed to the locking piece, is in a state of abutting against the locking piece.

3. The sealing tape according to claim 1 or 2, wherein in a state where the band-shaped portion is not inserted into the insertion space, the interval between the first wall and the locking piece narrows from a base portion to a proximal end of the locking piece.

4. The sealing band of any one of claims 1 to 3, wherein a center of the lead-out hole is displaced from a center of the insertion hole toward the second wall.

5. The sealing band according to any one of claims 1 to 4, wherein the first wall is formed such that the band-like portion located in the insertion space is curved with a surface closer to a predetermined portion of the insertion hole than the convex portion fitted to the concave portion as an apex.