JP7635990B2 - Adjuster - Google Patents

Description

The present invention relates to an adjuster.

An adjuster is a device that is attached to the size adjustment area of shoes, hats, and other clothing items and is used to adjust the size and tightness according to the user's body size and how it feels to wear.

One example of an adjuster is described in Patent Documents 1 to 6. In Patent Document 1, for example, one end of a fastening piece is attached to one of the left and right upper pieces in a state spanning the upper opening. In addition, a belt adjuster slider is attached to the other end of the fastening piece, and a belt adjuster rail is sewn to the other upper piece, and the tip of the rail is fixed to the shoe material with a stopper. Furthermore, the fastening of the left and right upper pieces of the upper opening is adjusted using a length-adjusting belt adjuster consisting of a long and narrow rail with an uneven portion and a slider with a locking claw that engages and disengages with the uneven portion.

Publication No. 2-3285 Japanese Utility Model Application Publication No. 52-157920 Japanese Utility Model Application Publication No. 5-21707 Publication No. 2561462 JP 2005-230050 A JP 2014-217531 A

However, the inventions related to the background art described above leave room for improvement in terms of easily and reliably adjusting the amount of tightness of shoes, etc.

Specifically, in the adjuster described in Patent Document 1, the amount of tightening was adjusted by moving the slider along the rail, but with this connection mechanism, the tightening force is generated only along the rail, making it difficult to tighten over a wide range. In addition, when the fitting structure between the slider and the rail is applied to something that moves a lot, such as a shoe, there is also the issue that the strength of the engagement structure is not necessarily sufficient.

The present invention was made in consideration of the above problems, and the object of the present invention is to provide an adjuster that allows easy adjustment of the tightening amount.

The present invention is an adjuster that connects a first connected portion and a second connected portion, and includes a first adjuster portion fixed to the first connected portion and a second adjuster portion fixed to the second connected portion, wherein when a direction in which the first adjuster portion and the second adjuster portion slide is defined as a first direction, a direction in which the first adjuster portion and the second adjuster portion overlap is defined as a second direction, and a direction perpendicular to the first direction and the second direction is defined as a third direction, the first adjuster portion comprises a first connection portion connected to the first connected portion, and a first extension portion extending from the first connection portion toward the second adjuster portion, the second adjuster portion has a second connecting portion connected to the second connected portion, a second extending portion extending from the second connecting portion toward the first adjuster portion, and a second fitting portion formed on the second extending portion, the first fitting portion protruding inward in the third direction in a convex shape, the second fitting portion being disposed inwardly of the first fitting portion in the third direction, and the second fitting portion being biased outward along the third direction to fit together the first fitting portion and the second fitting portion, the first fitting portion has a plurality of alternating inclined portions and abutting portions, the inclined portions are inclined toward a side away from the second adjuster portion, the abutting portions extend at a substantially right angle to a direction away from the second adjuster portion, the first extending portion of the first adjuster portion has a one-side first extending portion and an other-side first extending portion spaced apart from the one-side first extending portion, the inclined portions and the abutting portions are formed along inner sides of the one-side first extending portion and the other-side first extending portion, and an end portion of the one-side first extending portion and an end portion of the other-side first extending portion are connected via a continuous portion. the second extension portion of the second adjuster portion has a one-side second extension portion and an other-side second extension portion spaced apart from the one-side second extension portion, the second fitting portion is formed in the one-side second extension portion and the other-side second extension portion, ends of the one-side second extension portion and the other-side second extension portion are displaceable, and when the second extension portion is pushed inward in the third direction by a user's operation, the second fitting portion is disposed inward of the abutment portion in the third direction, and the first adjuster portion and the second adjuster portion can be spaced apart in the first direction .

According to the present invention, it is possible to provide an adjuster that can easily adjust the amount of tightening.

FIG. 2 is a perspective view of the adjuster according to the embodiment of the present invention, seen from above. FIG. 2 is a perspective view of the adjuster according to the embodiment of the present invention, seen from below. FIG. 2 is a perspective view of a first adjuster portion of the adjuster according to the embodiment of the present invention, as viewed from above. FIG. 2 is a perspective view of a first adjuster portion of the adjuster according to the embodiment of the present invention, as viewed from below. FIG. 4 is a top view of a first adjuster portion of the adjuster according to the embodiment of the present invention. FIG. 4 is a perspective view of a second adjuster portion of the adjuster according to the embodiment of the present invention, as viewed from above. FIG. 4 is a perspective view of a second adjuster portion of the adjuster according to the embodiment of the present invention, as viewed from below. 13 is a perspective view showing a second fitting portion and the like formed in a second extension portion of the adjuster according to an embodiment of the present invention. FIG. FIG. 2 is a top view showing a first adjuster portion and a second adjuster portion of the adjuster according to the embodiment of the present invention separated from each other. FIG. 13 is a top view of the adjuster according to the embodiment of the present invention, showing a state in which the second fitting portion of the second adjuster portion is fitted into the first fitting portion of the first adjuster portion. 13 is a top view showing a state in which the second fitting portion of the second adjuster portion and the first fitting portion of the first adjuster portion are disengaged from each other in the adjuster according to the embodiment of the present invention. FIG. 1A and 1B are diagrams showing a configuration in which an adjuster according to an embodiment of the present invention is applied to a shoe. 1A and 1B are diagrams showing a configuration in which an adjuster according to an embodiment of the present invention is applied to a hat.

The adjuster 10 according to one embodiment of the present invention will be described in detail below with reference to the drawings. In the following description, the same components will generally be designated by the same reference numerals, and repeated description will be omitted. In the following description, the top, bottom, front, back, left and right directions will be used, but the left and right directions are the directions in which the first adjuster section 20 and the second adjuster section 40, which will be described later, slide, and the top and bottom directions are the directions in which the first adjuster section 20 and the second adjuster section 40, which will be described later, are stacked, and these directions are used for convenience of description.

Figure 1A is a perspective view of the adjuster 10 as viewed from above. Figure 1B is a perspective view of the adjuster 10 as viewed from below. In the following description, the contracted state is a state in which the first adjuster portion 20 and the second adjuster portion 40 of the adjuster 10 are brought closer together in the left-right direction. The extended state is a state in which the first adjuster portion 20 and the second adjuster portion 40 of the adjuster 10 are moved apart in the left-right direction. The adjuster 10 can be extended in the left-right direction by the user applying a compressive force to the second adjuster portion 40 from the front-rear direction. The adjuster 10 can be contracted in the left-right direction by the user applying a compressive force to the first adjuster portion 20 and the second adjuster portion 40 along the left-right direction.

Referring to Figures 1A and 1B, the adjuster 10 is a device that connects the first connected part 11 and the second connected part 12 described below, and includes a first adjuster part 20 fixed to the first connected part 11, and a second adjuster part 40 fixed to the second connected part 12. As described below, the first fitting part 23 and the second fitting part 43 are fitted together, restricting the first adjuster part 20 and the second adjuster part 40 from moving apart from each other. This allows the adjuster 10 to be used as an adjustable part for shoes 13, etc., described below, and allows the fit of the shoes 13, etc. to be optimized.

The first adjuster part 20 has a first connection part 21 that is connected to the first connected part 11 (see FIG. 8A, etc.) described later, a first extension part 22 that extends from the first connection part 21 toward the second adjuster part 40, and a first fitting part 23 formed in the first extension part 22. With reference to FIG. 1B, the first extension part 22 has a first extension part 24 on one side and a first extension part 25 on the other side that is spaced apart from the first extension part 24 on one side. The first connection part 21 is a part that extends along the front-rear direction. A connection slit 31 is formed in the first connection part 21. The connection slit 31 is a substantially rectangular opening used for sewing, etc., and a plurality of connection slits are formed at substantially equal intervals along the front-rear direction. The first adjuster part 20 is made of injection-molded synthetic resin. A detailed configuration of the first adjuster part 20 will be described later with reference to FIG. 2 and FIG. 3.

The second adjuster part 40 has a second connection part 41 connected to the second connected part 12 (see FIG. 8A, etc.) described later, a second extension part 42 extending from the second connection part 41 toward the first adjuster part 20 side, and a second fitting part 43 formed in the second extension part 42. As shown in FIG. 1A, the second connection part 41 is a part extending along the left-right direction, and connection slits 46 penetrating the second connection part 41 in a substantially rectangular shape are formed at substantially equal intervals. Referring to FIG. 1A, the second connection part 41 is used for connection such as sewing, similar to the connection slit 31 described above. The second extension part 42 has a one-side second extension part 44 and an other-side second extension part 45. The one-side second extension part 44 extends from the rear end part of the second connection part 41 toward the right, and the other-side second extension part 45 extends from the front end part of the second connection part 41 toward the right. The second adjuster part 40 is made of injection-molded synthetic resin. Details of the second adjuster part 40 will be described later with reference to Figures 4 and 5.

Figure 2A is a perspective view of the first adjuster portion 20 of the adjuster 10 as seen from above. Figure 2B is a perspective view of the first adjuster portion 20 of the adjuster 10 as seen from below.

The first adjuster part 20 mainly has a first connection part 21, a first extension part 24 on one side, a first extension part 25 on the other side, and a continuous part 28. The first adjuster part 20 also has a curved shape in which the center part is higher than both the left and right ends in the left-right direction.

The continuous portion 28 is a portion that connects the left end of the first extension portion 24 on one side to the left end of the first extension portion 25 on the other side. The continuous portion 28 connects the first extension portion 24 on one side to the first extension portion 25 on the other side at their ends, thereby preventing deformation of the first extension portion 24 on one side and the first extension portion 25 on the other side during use.

The continuous portion 28 also serves as a protruding portion 29 that protrudes leftward beyond the left ends of the other-side first extension portion 25 and the one-side first extension portion 24. The protruding portion 29 is the portion that is inserted into an insertion hole 47 of the adjuster 10, which will be described later, when the adjuster 10 is in a contracted state. This state is shown in FIG. 1A.

A first fitting portion 23 is formed on the inner side of the first extension portion 24 on one side. The first fitting portion 23 has an inclined portion 26 and an abutment portion 27. A parallel portion 30 is formed on the right side of the abutment portion 27. In other words, the inclined portion 26, the abutment portion 27, and the parallel portion 30 are repeatedly formed in this order on the inner side of the first extension portion 24 on one side. The inclined portion 26 is a portion that inclines forward toward the side away from the second adjuster portion 40, that is, toward the right. The abutment portion 27 extends at a substantially right angle to the direction away from the second adjuster portion 40, that is, a portion that extends along the front-rear direction. The parallel portion 30 is a portion that extends along the left-right direction. The first fitting portion 23 is a portion into which the second fitting portion 43 of the second adjuster portion 40 described later fits.

The first fitting portion 23 is also formed on the inner edge of the other-side first extension portion 25, similar to the one-side first extension portion 24. That is, along the inner side edge of the other-side first extension portion 25, an inclined portion 26, an abutment portion 27, and a parallel portion 30 are formed.

The ribs 32, 33, and 34 are wall-like raised portions of the upper surface of the first adjuster portion 20. The ribs 32 and 33 extend in an approximately straight line along the left-right direction. The rib 33 extends along the front-rear direction, and its middle portion is approximately bow-shaped, protruding to the left. The front ends of the ribs 32 and 33 are continuous with the continuous portion 28 (protruding portion 29), and the rear ends are continuous with the middle portion of the rib 32. The rigidity of the first adjuster portion 20 can be strengthened by forming the ribs 32, 33, and 34. Furthermore, the ribs 32 and 33 also have the role of guiding the sliding movement when the first adjuster portion 20 and the second adjuster portion 40 slide relative to each other, as described later.

The central slit 35, the mating slit 36, and the mating slit 37 are openings in the first adjuster part 20. The central slit 35 is formed between the rib 32 and the rib 33. The mating slit 36 is formed between the rib 32 and the first extension part 24 on one side. The mating slit 37 is formed between the rib 33 and the first extension part 25 on the other side. The second mating part 43 and the flange part 49 of the second adjuster part 40 described later are inserted into the mating slit 36 and the mating slit 37.

Figure 3 is a top view of the first adjuster part 20 of the adjuster 10. In Figure 3, the outer edge of the recessed area 38 is shown by a dashed line.

The concave region 38 is formed by thinning the periphery of the first fitting portion 23 in the first adjuster portion 20. Specifically, the concave region 38 is formed in a substantially rectangular shape so as to surround the first fitting portion 23 and the fitting slit 36. The concave region 38 is a region in which the first adjuster portion 20 is concave from the underside, and the depth of the concave region 38 is formed to be approximately the same as or slightly longer than the flange portion 49 described below. In this way, the flange portion 49 is movably stored inside the concave region 38 and is movable inside the concave region 38. Furthermore, it is possible to prevent the flange portion 49 from protruding downward from the underside of the first adjuster portion 20.

Similarly, the recessed area 38 is formed in the front portion of the first adjuster part 20 so as to surround the mating slit 37.

Figure 4A is a perspective view of the second adjuster part 40 seen from above. Figure 4B is a perspective view of the second adjuster part 40 seen from below.

Referring to Figures 4A and 4B, the second adjuster portion 40 has a second connection portion 41, a one-side second extension portion 44, and an other-side second extension portion 45. The one-side second extension portion 44 extends to the right from the rear end of the second connection portion 41. The other-side second extension portion 45 extends to the right from the front end of the second connection portion 41. The right-side ends of the one-side second extension portion 44 and the other-side second extension portion 45 are free ends and can be displaced.

The rib 48 is a wall-like protrusion on the upper surface of the second adjuster part 40. The rib 48 is formed continuously from the front end to the rear end on the upper surface of the second adjuster part 40. The middle part of the rib 48 is curved in a bow shape toward the right.

The insertion hole 47 is an opening formed between the rib 48 and the second connection portion 41. The insertion hole 47 is open in the up-down direction and also in the left-right direction. The protrusion 29 of the first adjuster portion 20 described above is inserted into the insertion hole 47.

Referring to FIG. 4B, the second fitting portion 43 is formed on the underside near the right end of the one-side second extension portion 44 and the other-side second extension portion 45. As described above, the second fitting portion 43 is a portion that fits into the first fitting portion 23 of the first adjuster portion 20 shown in FIG. 3. The flange portion 49 is a portion that is stored in the recessed region 38 shown in FIG. 3. The second fitting portion 43 fits into the first fitting portion 23, thereby restricting the relative position of the first adjuster portion 20 and the second adjuster portion 40 in the left-right direction. The flange portion 49 is stored in the recessed region 38, thereby maintaining the first adjuster portion 20 and the second adjuster portion 40 in a state of being engaged in the up-down direction while allowing relative movement in the left-right direction.

Figure 5 is a perspective view showing the second fitting portion 43 formed in the second extension portion 42 of the adjuster 10.

As described above, the second fitting portion 43 and the flange portion 49 protrude downward from the underside of the right end portion of the other-side second extension portion 45. The second fitting portion 43 is a member having a roughly rectangular column shape, and the flange portion 49 is formed at the lower end of the second fitting portion 43.

The flange 49 is a flange-like portion that protrudes from the lower end of the second fitting portion 43 forward, backward, left, and right, and is generally square-shaped when viewed from above. The flange 49 protrudes forward more than it protrudes to the right and left.

The second fitting portion 43 and flange portion 49 of this shape are also formed at the right end portion of the second extension portion 44 on one side shown in Figure 4.

Figure 6 is a top view showing the first adjuster portion 20 and the second adjuster portion 40 of the adjuster 10 separated in the left-right direction.

Here, the distance L10 between the outer end of the second fitting portion 43 formed in the second extension portion 44 on one side and the outer end of the second fitting portion 43 formed in the second extension portion 45 on the other side is longer than the distance L11 between the inner end of the inclined portion 26 formed in the first extension portion 24 on one side and the inner end of the inclined portion 26 formed in the first extension portion 25 on the other side.

When assembling the adjuster 10, the second adjuster part 40 is assembled to the first adjuster part 20, and the second fitting part 43 of the second adjuster part 40 is assembled to the fitting slit 36 and the fitting slit 37 of the first adjuster part 20. In this way, the second fitting part 43 of the second extension part 42 abuts against the inclined part 26 of the first extension part 24 on one side, and the second fitting part 43 of the second extension part 45 on the other side abuts between the inclined part 26 of the first extension part 25 on the other side. As a result, the second extension part 44 on one side curves forward, and the second extension part 45 on the other side curves backward. This bending action generates a biasing force, and each second fitting part 43 is pressed against the inclined part 26 of the first extension part 24 on one side and the inclined part 26 of the first extension part 25 on the other side. This makes it easy to insert the second adjuster part 40 into the first adjuster part 20, while restricting movement in the opposite direction.

Furthermore, the distance L10 between the outer end of the second fitting portion 43 formed in the second extension portion 44 on one side and the outer end of the second fitting portion 43 formed in the second extension portion 45 on the other side is longer than the distance L12 between the parallel portion 30 formed in the first extension portion 24 on one side and the parallel portion 30 formed in the first extension portion 25 on the other side.

With this configuration, the second fitting portion 43 of each of the second adjuster portions 40 can be pressed against the parallel portion 30 of the first extension portion 24 on one side and the parallel portion 30 of the first extension portion 25 on the other side of the first adjuster portion 20. Thus, each of the second fitting portions 43 of the second adjuster portion 40 abuts against the abutment portion 27 of the first extension portion 24 on one side and the abutment portion 27 of the first extension portion 25 on the other side, and the first adjuster portion 20 and the second adjuster portion 40 are engaged in the left-right direction.

7A is a top view showing a state in which the second fitting portion 43 of the second adjuster portion 40 is fitted into the first fitting portion 23 of the first adjuster portion 20. Here, the right side end of the second fitting portion 43 abuts against the abutment portion 27. In addition, the rear side end of the second fitting portion 43 is pressed against the parallel portion 30 by the biasing force acting on the second extension portion 42. With this configuration, the first adjuster portion 20 and the second adjuster portion 40 are prevented from moving away from each other in the left-right direction.
The same configuration applies to the other-side first extending portion 25 side shown in FIG.

Figure 7B is a top view showing a state in which the second fitting portion 43 of the second adjuster portion 40 and the first fitting portion 23 of the first adjuster portion 20 are disengaged. When a user (not shown) pushes the one-side second extension portion 44 forward, the rear end of the second fitting portion 43 is positioned forward of the front end of the abutment portion 27. In this way, the first adjuster portion 20 and the second adjuster portion 40 can be separated in the left-right direction. At this time, the front end of the flange portion 49 abuts against the front edge of the recessed area 38, thereby preventing the second adjuster portion 40 from coming off the first adjuster portion 20. This configuration is similar to that of the other-side first extension portion 25 shown in Figure 6.

Figure 8A shows the configuration in which the adjuster 10 is applied to the shoe 13.

The shoe 13 is, for example, an athletic shoe, and the adjuster 10 is arranged to cover an opening formed in the center of the shoe 13. The first connection part 21 of the adjuster 10 is connected by sewing or gluing to the upper right end part 14, which is the first connected part 11 of the shoe 13. The second connection part 41 of the adjuster 10 is connected by sewing or gluing to the upper left end part 15, which is the second connected part 12 of the shoe 13.

With this configuration, when the user puts on the shoe 13, the left-right middle part of the adjuster 10 is pressed from the front and rear, and the first adjuster part 20 and the second adjuster part 40 are separated left-right to enter an extended state. The user then inserts his/her foot into the shoe 13 through the opening, bringing the first adjuster part 20 and the second adjuster part 40 closer to each other. In this way, the adjuster 10 tightens the middle part of the shoe 13 left-right, and the shoe 13 fits the user's foot nicely.

Figure 8B shows the configuration in which the adjuster 10 is applied to the hat 16.

Here, an adjustment slit 17 is formed by cutting out the rear end of the hat 16, and the adjuster 10 is disposed so as to straddle the adjustment slit 17. The left side portion of the adjustment slit 17 is the first connected portion 11, which is connected to the first connection portion 21 of the adjuster 10. The right side portion of the adjustment slit 17 is the second connected portion 12, which is connected to the second connection portion 41 of the adjuster 10. By disposing the adjuster 10 on the hat 16, the outer circumferential size of the hat 16 can be freely and easily adjusted.

The above-described embodiment provides the following major advantages:

In other words, referring to FIG. 7A etc., the first fitting portion 23 and the second fitting portion 43 are fitted together, so that the first adjuster portion 20 and the second adjuster portion 40 are restricted from moving away from each other, and the first connected portion 11 and the second connected portion 12 can be suitably connected together.

Furthermore, referring to FIG. 7A etc., since the first adjuster part 20 has the inclined part 26, the second fitting part 43 of the second adjuster part 40 slides along the inclined part 26 of the first adjuster part 20 under usage conditions, and the first connected part 11 and the second connected part 12 can be brought closer together by the user's operation. Furthermore, since the first adjuster part 20 has the abutment part 27, the second fitting part 43 of the second adjuster part 40 can engage with the abutment part 27, and the first connected part 11 and the second connected part 12 can be connected at a predetermined position.

Furthermore, referring to FIG. 7A etc., the inclined portion 26 and the abutment portion 27 are formed in the first extension portion 24 on one side and the first extension portion 25 on the other side, so that the second fitting portion 43 of the second adjuster portion 40 is more firmly fitted, and the first fitting portion 23 and the second fitting portion 43 can be prevented from separating under usage conditions. In addition, the ends of the second extension portion 44 on one side and the second extension portion 45 on the other side are displaceable free ends, so that the second fitting portion 43 can move and be fitted with greater freedom.

Furthermore, referring to FIG. 7A etc., the second engaging portion 43 can be pressed against the inclined portion 26 by the biasing force, so that the user can obtain an appropriate sense of moderation when the first connected portion 11 and the second connected portion 12 are displaced so as to approach each other.

Furthermore, referring to Figures 2A and 4A, by inserting the protrusion 29 of the first adjuster part 20 into the insertion hole 47 of the second adjuster part 40, the connection between the first adjuster part 20 and the second adjuster part 40 is strengthened, and separation of the two parts during use can be prevented.

Furthermore, referring to FIG. 7B etc., since the flange portion 49 is movable within the recessed region 38, the range of deformation of the second extension portion 42 can be defined, and protrusion of the flange portion 49 in the thickness direction can be suppressed.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and modifications can be made without departing from the gist of the present invention. In addition, the above-mentioned embodiments can be combined with each other.

For example, in the present embodiment, the adjuster 10 is applied to the shoes 13 and the hat 16, but the adjuster 10 can also be applied to other products. For example, the adjuster 10 can be applied to a wide range of products that have an expandable function, such as a folding umbrella.
The invention that can be understood from the above-described embodiment will be described below together with its effects.
The adjuster of the present invention is an adjuster that connects a first connected part and a second connected part, and includes a first adjuster part fixed to the first connected part and a second adjuster part fixed to the second connected part, the first adjuster part has a first connection part connected to the first connected part, a first extension part extending from the first connection part toward the second adjuster part, and a first fitting part formed on the first extension part, the second adjuster part has a second connection part connected to the second connected part, a second extension part extending from the second connection part toward the first adjuster part, and a second fitting part formed on the second extension part, and the first fitting part and the second fitting part are fitted together to restrict the first adjuster part and the second adjuster part from moving in a direction away from each other. The adjuster of the present invention provides an adjuster that can easily adjust the tightening amount and obtain sufficient engagement strength. Specifically, by engaging the first engaging portion with the second engaging portion, the movement of the first adjuster portion and the second adjuster portion in a direction away from each other is restricted, thereby enabling the first connected portion and the second connected portion to be connected in an appropriate manner.
In the adjuster of the present invention, the first fitting portion has a plurality of alternating inclined portions and abutment portions, the inclined portions incline toward a side away from the second adjuster portion, and the abutment portions extend at approximately right angles to a direction away from the second adjuster portion. According to the adjuster of the present invention, since the first adjuster portion has the inclined portion, the second fitting portion of the second adjuster portion slides along the inclined portion of the first adjuster portion under usage conditions, and the first connected portion and the second connected portion can be brought closer together by the user's operation. Furthermore, since the first adjuster portion has the abutment portion, the second fitting portion of the second adjuster portion can engage with the abutment portion to connect the first connected portion and the second connected portion at a predetermined position.
In addition, in the adjuster of the present invention, the first extension portion of the first adjuster part has a one-side first extension portion and an other-side first extension portion spaced apart from the one-side first extension portion, the inclined portion and the abutment portion are formed along inner sides of the one-side first extension portion and the other-side first extension portion, an end portion of the one-side first extension portion and an end portion of the other-side first extension portion are continuous via a continuous portion, the second extension portion of the second adjuster part has a one-side second extension portion and an other-side second extension portion spaced apart from the one-side second extension portion, and the second fitting portion is formed in the one-side second extension portion and the other-side second extension portion, and ends of the one-side second extension portion and the other-side second extension portion are displaceable. According to the adjuster of the present invention, the first extension portion on one side and the first extension portion on the other side are formed with an inclined portion and an abutment portion, so that the second fitting portion of the second adjuster portion is more firmly fitted to the first fitting portion and the second fitting portion are prevented from separating from each other under use conditions. Also, the ends of the second extension portion on one side and the second extension portion on the other side are displaceable free ends, so that the degree of freedom of movement and fitting of the second fitting portion can be increased.
In the adjuster of the present invention, the distance between the outer end of the second fitting portion formed on the one-side second extending portion and the outer end of the second fitting portion formed on the other-side second extending portion is longer than the distance between the inner end of the inclined portion formed on the one-side first extending portion and the inner end of the inclined portion formed on the other-side first extending portion. According to the adjuster of the present invention, the one-side second extending portion and the other-side second extending portion can be pressed against the inclined portion in a biased state, so that the user can obtain an appropriate sense of moderation when the first connected portion and the second connected portion are displaced so as to approach each other.
The adjuster of the present invention is characterized in that the first adjuster part is formed with a protruding part that protrudes toward the second connected part, and the second adjuster part is formed with an insertion hole into which the protruding part can be inserted. According to the adjuster of the present invention, by inserting the protruding part of the first adjuster part into the insertion hole of the second adjuster part, the connection between the first adjuster part and the second adjuster part can be strengthened and separation of the two adjusters can be prevented during use.
In the adjuster of the present invention, a concave region is formed in the first adjuster part by thinning the periphery of the first fitting part, and a flange is formed in the second fitting part of the second extension part in the second adjuster part, and the flange is movable within the concave region. According to the adjuster of the present invention, since the flange is movable within the concave region, the range of deformation of the second extension part can be defined and protrusion of the flange in the thickness direction can be suppressed.

10 Adjuster 11 First connected portion 12 Second connected portion 13 Shoe 14 Upper right end portion 15 Upper left end portion 16 Cap 17 Adjustment slit 20 First adjuster portion 21 First connection portion 22 First extension portion 23 First fitting portion 24 One side first extension portion 25 Other side first extension portion 26 Inclined portion 27 Contact portion 28 Continuous portion 29 Protruding portion 30 Parallel portion 31 Connection slit 32 Rib 33 Rib 34 Rib 35 Central slit 36 Fitting slit 37 Fitting slit 38 Concave region 40 Second adjuster portion 41 Second connection portion 42 Second extension portion 43 Second fitting portion 44 One side second extension portion 45 Other side second extension portion 46 Connection slit 47 Insertion hole 48 Rib 49 Flange portion

Claims (4)

an adjuster that connects the first connected portion and the second connected portion;
a first adjuster portion fixed to the first connected portion and a second adjuster portion fixed to the second connected portion,
When a direction in which the first adjuster portion and the second adjuster portion slide is defined as a first direction, a direction in which the first adjuster portion and the second adjuster portion overlap is defined as a second direction, and a direction perpendicular to the first direction and the second direction is defined as a third direction,
the first adjuster portion has a first connecting portion connected to the first connected portion, a first extending portion extending from the first connecting portion toward the second adjuster portion, and a first fitting portion formed on the first extending portion,
the second adjuster portion has a second connecting portion connected to the second connected portion, a second extending portion extending from the second connecting portion toward the first adjuster portion, and a second fitting portion formed on the second extending portion,
The first fitting portion protrudes inward in the third direction,
The second fitting portion is disposed on the inner side of the first fitting portion in the third direction,
the second fitting portion is biased outward along the third direction, whereby the first fitting portion and the second fitting portion are fitted together , and movement of the first adjuster portion and the second adjuster portion in directions away from each other is restricted,
the first fitting portion has a plurality of inclined portions and abutment portions arranged alternately, the inclined portions are inclined toward a side away from the second adjuster portion, and the abutment portions extend at a substantially right angle to a direction away from the second adjuster portion,
the first extending portion of the first adjuster portion has a one-side first extending portion and an other-side first extending portion spaced apart from the one-side first extending portion, the inclined portion and the abutting portion are formed along inner sides of the one-side first extending portion and the other-side first extending portion, an end of the one-side first extending portion and an end of the other-side first extending portion are continuous with each other via a continuous portion,
the second extending portion of the second adjuster portion has a one-side second extending portion and an other-side second extending portion spaced apart from the one-side second extending portion, the second fitting portion is formed in the one-side second extending portion and the other-side second extending portion, and ends of the one-side second extending portion and the other-side second extending portion are displaceable,
an adjuster characterized in that, when the second extension portion is pushed inward in the third direction by a user's operation, the second fitting portion is disposed inward relative to the abutment portion in the third direction, and the first adjuster portion and the second adjuster portion can be separated in the first direction . The distance between an outer end of the second fitting portion formed on the one-side second extending portion and an outer end of the second fitting portion formed on the other-side second extending portion is
The adjuster according to claim 1, characterized in that the distance between an inner end of the inclined portion formed in the one-side first extension portion and an inner end of the inclined portion formed in the other-side first extension portion is longer than the distance between them. The first adjuster portion is formed with a protruding portion that protrudes toward the second connected portion,
The adjuster according to claim 1 , wherein the second adjuster portion is formed with an insertion hole into which the protrusion can be inserted. In the first adjuster portion, a concave region is formed by thinning a periphery of the first fitting portion,
In the second adjuster portion, a flange portion is formed on the second fitting portion of the second extension portion,
The adjuster of claim 1 , wherein the collar is movable within the recessed area.

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