WO2020209582A1

WO2020209582A1 - Wire tightening apparatus

Info

Publication number: WO2020209582A1
Application number: PCT/KR2020/004703
Authority: WO
Inventors: 하민우
Original assignee: 하민우
Priority date: 2019-04-10
Filing date: 2020-04-07
Publication date: 2020-10-15
Also published as: KR20200119618A; KR102189249B1

Abstract

The present invention provides a wire tightening apparatus with improved durability and usability, the wire tightening apparatus comprising: a cylindrical housing portion having an accommodation space therein and a ratchet-type gear in an inner circumference thereof; a reel portion which is rotatably inserted into an inner lower portion of the housing portion to wind a wire thereon when rotating in one direction; a gear blade portion which is provided with a ratchet coupling portion coupled to the ratchet-type gear to restrict rotation in the opposite direction and an elevation guide hole formed in the center thereof; a gear body portion which is selectively coupled to and integrally rotated with the reel portion by being inserted and slidably elevated in the elevation guide hole and which has an elevation cam hole formed in the center thereof; and a driving knob portion which is rotatably coupled to an upper portion of the housing portion and is provided with a fixing protrusion protruding downward from the lower center portion to transfer a rotational force to the elevation cam hole.

Description

Wire tightening device

The present invention relates to a wire tightening device, and in more detail, durability and use

It relates to a wire tightening device with improved convenience.

In general, shoes such as sneakers have shoelaces so that they adhere closely to the

It is provided to be connected in a zigzag type, and by pulling and tightening such a shoelace, the adhesion between the shoe and the user's foot is enhanced to enable comfortable walking.

However, it is not easy to loosen and fasten shoelaces for children and the elderly in the lower grades of elementary school or before elementary school.

Moreover, if both ends or knots of an unfixed shoelace are released due to vigorous movement or jamming by foreign objects during exercise such as mountain climbing or bicycle racing, the risk of injury due to safety accidents increases as well as record loss. Should be prevented.

In addition, since the tightly tightened shoelaces can be sufficiently rested during rest, most preferably, the shoelaces can be easily tightened, and the tightened state should be maintained firmly and at the same time, the shoelaces should be easily loosened when necessary.

Accordingly, a number of devices have been developed to smoothly tighten and loosen shoelaces that are contrary to each other.

1 is a perspective view of a shoe equipped with a conventional shoelace tightening device, and FIG. 2 is an exploded perspective view of a conventional shoelace tightening device. As shown in FIGS. 1 and 2, the conventional shoelace tightening device 10 is provided on the tongue T of the shoe, and when the rotation cover 51 is rotated, the intermediate portion provided integrally with the mold locking portion 53z The member 53 is coupled to the winding member 55 and rotates together. At this time, a wire (L) replacing the shoelace is wound around the winding member 55 so that both side skins of the shoe can be tightened, and the mold engaging portion 53z is attached to the ratchet gear 57c of the housing 57. It is constrained and reverse loosening can be prevented.

Thereafter, when the rotation cover 51 is pulled upward, the locking projection 62 of the rotation shaft 61 elastically presses the elastic means 59 and moves upward while the intermediate member 53 is raised. At this time, the mating constraining portion 53z is raised in a state coupled to the ratchet gear 57c. Through this, when the coupling state between the intermediate member 53 and the winding member 55 is released and the winding member 55 is freely rotated, the wire L can be pulled out.

In addition, when the external force applied upward to the rotation cover 51 is removed, the intermediate member 53 descends and is coupled to the winding member 55 so that the wire L is wound around the winding member 55.

However, the intermediate member is formed integrally with the engaging portion, so that when the intermediate member is raised, the engaging portion is raised and lowered while being coupled to the ratchet gear. Therefore, when the wing portion including the joint constraining portion is continuously pressed or excessive external force is applied by extending to the end of the intermediate member for elevating and descending, it causes a bending deformation of the wing portion, resulting in fatigue failure, which causes product failure. there was.

In addition, such a tightening device 10 has frequent failures in which the elastic means 59 is separated from the original position when the rotation cover 51 for releasing the wire L is raised, and to solve this, the elastic means 59 There is a problem in that the lower structure of the housing 57 to be coupled is complicated and the number of parts is increased.

Moreover, dust in the communication hole through which the wire L passes through the winding member 55 flows between the central portion of the intermediate member 53 and the mold locking portion 53z, thereby reducing the rotational force of the intermediate member 53 Therefore, there was a problem that a malfunction of the product occurred.

In order to solve the above problems, the present invention has as a solution to provide a wire tightening device with improved durability and ease of use.

In order to solve the above problems, the present invention is a cylindrical housing portion having an accommodation space formed therein and a ratchet-type gear provided in the inner circumference; A reel portion which is rotatably inserted into the lower inner portion of the housing portion so that the wire is wound when rotated in one direction; A gear blade portion provided with a ratchet coupling portion coupled to the ratchet-type gear so as to constrain rotation in other directions, and having an elevating guide hole; A gear body that is inserted into the elevating guide hole and selectively coupled with the reel portion to be rotated integrally as the slide is elevated, the elevating cam hole being formed; And a driving knob portion rotatably coupled to the upper portion of the housing portion and protruding downward from the lower portion thereof to transmit a rotational force to the elevating cam hole.

Here, the gear body portion is provided with an elevating cam hole in which a cam groove inclined upward in one direction is formed on the inner periphery, and the driving knob portion is provided with a driving protrusion in which a guide cam inserted into the cam groove and slip-moving is protruded, and the The guide cam has a stopper step portion recessed upwardly at the lower end portion of the one direction side so as to be seated on the edge of the cam groove portion when rotating in one direction to maintain the lowered state of the gear body, and the upper portion of the reel portion and the lower portion of the gear body portion are mutually It is preferable that the engaging portion and the engaging portion that are selectively coupled and coupled are formed.

In addition, it is preferable that one side of the outer circumference of the gear body and the inner circumference of the elevating guide hole has an elevating protrusion protruding, and an elevating groove for guiding the elevating of the elevating protrusion is formed on the opposite side.

Further, the driving knob portion includes a driving cap portion for applying rotation to the tightening device, and a locking driving portion coupled with the gear blade, a locking protrusion having a locking projection recessed in one direction protrudes from the upper portion of the gear blade portion, and the locking It is preferable that the driving part is provided with a locking hole in which an elastic support rib protruding on one surface is formed so that the locking jaws are selectively elastically caught at the ends.

In addition, a step portion recessed upwardly is formed on a lower surface of the gear blade portion, and is protruded downward to a lower surface portion of the drive knob to press the ratchet coupling portion radially outward toward the ratchet-type gear when rotating in the other direction, A wire tightening device, characterized in that it is provided with a rotation pressing unit having a rotation protrusion that is engaged with the stepped portion at an end.

Through the above solution means, the present invention provides the following effects.

First, unlike the conventional gear body unit and the gear blade unit, which are integrally provided when rotating in the other direction, in the present invention, the gear body unit is provided in a separate member insertion type from the gear blade unit to the inside of the lifting guide hole. Since it is inserted, when rotating in the other direction, the gear blade part is fixed to the housing part as the ratchet-type gear is coupled to the ratchet coupling part, and the gear body part is raised and lowered to prevent bending deformation of the gear blade part due to pressing force. By fundamentally blocking destruction, the durability of the product can be further improved.

Second, unlike the conventional dust introduced into the through portion of the housing portion is moved to the groove of the raised gear blade, the present invention is fixed to the lower side of the groove of the gear blade is closed by the partition partition wall. Since dust entering the penetrating portion stays in the elevating groove of the elevating guide hole and does not move upward, the inflow of dust into the gear blade portion and the locking drive portion is prevented, thereby further improving the durability of the product.

Third, when the locking driving part and the gear blade are coupled, the rotation angle of the driving cap part for winding the wire as the locking protrusion formed on the upper part of the gear blade is disposed on one side of the rotation pressing part protruding under the locking driving part. Since the wire is wound by simply rotating it at a predetermined angle, convenience of use of the product may be improved.

1 is a perspective view of a shoe equipped with a conventional shoelace tightening device.

Figure 2 is an exploded perspective view of a conventional shoelace tightening device.

3A and 3B are exploded perspective views of a wire tightening device according to an embodiment of the present invention.

4A and 4B are cross-sectional views of a wire tightening device according to an embodiment of the present invention.

5A and 5B are exemplary views showing the operation of the wire tightening device according to an embodiment of the present invention.

6A and 6B are cross-sectional view illustrating an operation process of a gear unit in a wire tightening device according to an embodiment of the present invention, as viewed from above.

Hereinafter, a wire tightening device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3A and 3B are an exploded perspective view of a wire tightening device according to an embodiment of the present invention, FIGS. 4A and 4B are cross-sectional views of a wire tightening device according to an embodiment of the present invention, and FIGS. 5A and 5B are An exemplary view showing an operation process of a wire tightening device according to an embodiment of the present invention, and FIGS. 6A and 6B are cross-sectional view illustrating an operation process of a gear unit in the wire tightening device according to an embodiment of the present invention.

3A to 6B, the wire tightening device 500 according to an embodiment of the present invention includes a housing part 530, a reel part 540, a gear blade part 520, a gear body part 570, and It is provided including a driving knob part 510.

Here, the housing part 530 is in a state in which the reel part 540 is coupled to the accommodation space, and the driving knob part 510, the gear blade part 520, and the gear body part 570 are combined. It may be detachable from the upper portion of the coupling base portion 560. That is, the housing part 530 is preferably understood as a structure in which components for tightening and releasing the tightening of the wire are mounted.

In detail, the coupling base portion 560 is a support structure fixed to an object to be tightened such as shoes, and is formed of a resin material such as reinforced plastic, which is an elastic material having a certain strength or more, and is fixed to the object to be tightened. It includes 561 and a fastening partition wall 562 protruding in the center of the upper surface of the base plate 561.

At this time, the base plate 561 may be fixed to the fastening object through a fixing means such as sewing or an adhesive, and the housing part 530 is attached to and detached from the fastening partition wall 562.

In addition, when the coupling base portion 560 is fixed to the fastening object, the wire connected to the fastening object is coupled to the reel portion 540, and the housing portion 530 is coupled to the fastening partition wall 562. Accordingly, various components such as the housing part 530 and the reel part 540 assembled thereto, the gear body part 570, the gear blade part 520 and the driving knob part 510 are tightened. Can be mounted on an object.

In addition, the reel part 540 is a part to which a wire connected to a fastening object is coupled and wound, and when the reel part 540 is rotated in one direction (R, clockwise in FIG. 3A), the wire is rotated around the outer periphery of the reel part 540 It is wound along the fastening object can be tightened.

In addition, when the reel part 540 is rotated in the other direction (CR, counterclockwise in FIG. 3A), the wire may be released from the reel part 540 to release the tightening object. Here, the gear blade portion 520 is coupled to the inner circumference of the housing portion to be fixed to lift, and when the external force is released, rotation of the reel portion 540 in the other direction (CR) may be limited. In addition, the gear body portion 570 is coupled to the inner circumference of the gear blade portion 520, and transmits a rotational force in one direction (R) applied to the driving knob portion 510 to the reel portion 540.

That is, the drive knob 510 is rotated in one direction (R) by an external force, and the gear body 570 and the reel part 540 are integrally driven to rotate in one direction (R), but ascending or in the other direction (CR ) Refers to a part in charge of releasing the coupling between the gear body part 570 and the reel part 540 during rotation, and may be provided as one member, and in some cases, two or more members It is also possible to be provided in combination.

In the following, as an example, one direction R in which the wire is wound is set in a clockwise direction while looking at the wire tightening device 500 in an up-down direction, and the other direction CR in which the wire is unwound is set in a counterclockwise direction. Although shown and described, the rotation direction in which the wire is wound and unwound can be easily changed in design by reversing the shape of each component to be described later.

On the other hand, as shown in FIGS. 3A to 4A, the housing part 530 is provided in a cylindrical shape having an inner diameter exceeding the outer diameter of the reel part 540 so that an accommodation space in which the reel part 540 is accommodated is formed, It is preferable that a partition partition wall 531 protruding radially inward along the circumferential direction and having an inner diameter less than the outer diameter of the reel unit 540 is provided at the inner circumferential central portion. In this case, the partition partition wall 531 may support an upper edge of the reel part 540 inserted through the lower opening of the housing part 530.

Here, the housing part 530 may be further provided with the auxiliary cap part 550 to support the lower surface of the reel part 540 in some cases. At this time, the auxiliary cap part 550 is assembled at the lower end of the housing part 530 and provided to cover the open lower part of the receiving space. Accordingly, the lower surface part of the reel part 540 is supported and the The reel part 540 may be disposed rotatably without being separated from the accommodation space.

In detail, the auxiliary cap portion 550 is preferably provided as a ring-shaped plate member having an outer diameter corresponding to the inner diameter of the housing portion 530 and having a fastening guide hole 454 formed at the center thereof. In addition, it is preferable that the outer periphery of the auxiliary cap portion 550 is provided with a plurality of cap coupling protrusions 555 having an outer diameter exceeding the inner diameter of the housing portion 530.

At this time, a plurality of cap coupling holes 535 are formed through the inner circumference of the lower end of the housing part 530 so as to correspond to the cap coupling protrusion 555, and the cap coupling protrusion 555 is the cap coupling hole 535 As it is inserted into, the auxiliary cap part 550 may be coupled to the lower end of the housing part 530.

And, when the cap coupling protrusion 555 inserted into the cap coupling hole 535 is pressed radially inward, the auxiliary cap portion 550 is elastically deformed, and the cap coupling protrusion 555 becomes the cap coupling hole ( It may be separated from 535 and the auxiliary cap part 550 may be separated from the housing part 530.

Here, the cap coupling hole 535 is in close contact between the lower end of the partition partition 531 and the upper rim of the reel unit 540 in the inner circumference of the housing unit 530 from the lower end of the reel unit 540 to the lower side. It is preferably formed in the exposed portion. Through this, a predetermined clearance space in which the reel portion 540 is rotatable may be formed between the partition partition wall 531 and the auxiliary cap portion 550 in the housing portion 530.

In addition, it is preferable that a pair of penetrating portions 538a disposed spaced apart from each other in the circumferential direction so that both ends of the wire connected to the fastening object pass through the lower outer circumference of the housing portion 530.

At this time, it is preferable that guide protrusions 538 which limit movement of the wire in one direction and the other direction are protruded at the edges of both ends of each of the through portions 538a in the circumferential direction. In addition, it is preferable that the guide protrusion 538 is provided with a guide groove 538b having a rounded inner surface so as to reduce wear damage during winding and unwinding of the wire. In addition, the guide groove 538b may be deleted in some cases to prevent abrasion of the wire generated in the guide groove 538b and inconvenience of cutting when replacing the wire.

In addition, as both ends of the wire are inserted into the pair of through portions 538a, the wires may be inserted into the housing unit 530, and the introduced wires are mounted inside the housing unit 530. It may be combined with the reel portion 540.

On the other hand, the reel part 540 is a circular block member formed of a resin material such as reinforced plastic, and preferably has a ring-shaped wire winding groove 542 recessed radially inward on the outer circumferential surface.

In this case, a communication hole 543 into which both ends passing through each of the through portions 538a are separated and inserted into the wire winding groove 542 may be formed. In this case, the communication hole 543 is preferably provided including a first communication hole (543a), a second communication hole (543b) and a third communication hole (543c).

At this time, the first communication hole (543a), the second communication hole (543b) and the third communication hole (543c) may be provided in a pair, respectively, each of the first communication hole (543a) is It is aligned and formed to correspond to the arrangement angle of the through part 538a. That is, when any one side of each of the first communication holes 543a is aligned with the one through part 538a, the other first communication hole 543a may be automatically aligned with the other through part 538a.

In addition, both ends of the wire may be respectively inserted in communication through the aligned through portions 538a and the first communication holes 543a. That is, one end of the wire is inserted in communication along the one through portion (538a) and one side first communication hole (543a), and the other end of the wire is along the other through portion (538a) and the other side first communication hole (543a). Communication can be inserted.

In addition, it is preferable that a fastening hollow portion 545 through which the

communication holes

543a, 543b, and 543c communicate with each other is formed on the lower surface of the reel portion 540. Here, the fastening hollow part 545 is formed such that one side of the lower surface of the reel part 540 is recessed upwardly so as to be partitioned from the wire winding groove 542.

At this time, the wire winding groove 542 and the fastening hollow portion 545 may be partially communicated with each other through

communication holes

543a, 543b, and 543c formed through the inner circumferential surface of the wire winding groove 542. Accordingly, both ends of the wire inserted in communication through each of the through portions 538a and the first communication holes 543a may be disposed on the side of the fastening hollow portion 545.

At this time, both ends of the wire inserted in communication through each of the through portions 538a and the first communication holes 543a are each of the second communication holes 543b opened on the inner surface side of the fastening hollow portion 545 Can be inserted into

That is, both ends of the wire inserted in communication through the through portion 538a and the first communication hole 543a pass through the fastening hollow portion 545, and the wire winding groove through each of the second communication holes 543b. It can be placed on the 542 side.

In addition, the third communication hole (543c) is preferably disposed between the first communication hole (543a) and the second communication hole (543b). Through this, both ends of the wire disposed toward the wire winding groove 542 through the second communication hole 543b can be inserted into the fastening hollow part 545 again through the third communication hole 543c. have.

At this time, the end of the wire inserted through the third communication hole 543c on the side of the fastening hollow part 545 is one side of the wire extending from the first communication hole 543a toward the second communication hole 543b. As it crosses and is pressed, both ends of the wire may be constrained to prevent separation.

Accordingly, when the ends of the wires are sequentially inserted in communication so as to pass through each of the

communication holes

543a, 543b, and 543c without a separate fixing means, the convenience of use of the product may be further improved because it is automatically constrained to prevent separation.

Here, as the wire is constrained at both ends through each of the communication holes (543a, 543b, 543c), when the reel part 540 is rotated, the portion disposed on the outer edge of the first communication hole (543a) as a starting point. It may be wound along the wire winding groove 542.

Accordingly, the wire and the reel part 540 can be easily connected so that the wire is constrained by the rotation of the reel part 540 and wound up. Moreover, since both ends of the wire can be easily inserted and exposed to the lower portion of the auxiliary cap portion 550 through the inner surface of the fastening hollow portion 545, the wire can be easily replaced, so that the convenience of use can be improved.

On the other hand, referring to FIGS. 3A to 4B, the gear blade portion 520 is a ratchet coupling portion 523 coupled to the ratchet-type gear 533 so that rotation in the other direction is restricted extends toward the arc side of the gear blade portion. It is provided in the part, and the elevating guide hole 521 is formed in the central part.

In detail, the gear blade portion 520 is provided in an arc shape that extends roundly from one direction (R) side end to the other direction (CR) so that the other direction (CR) side end is elastically deformed in the radial direction, the partition partition wall It is preferable to be disposed and seated along the upper surface of (531).

At this time, a ratchet-type gear 533 is formed in the circumferential direction on the upper portion of the partition partition wall 531 on the inner circumference of the housing part 530. In addition, the end of the gear blade 520 on the other direction (CR) side It is preferable that the ratchet-type gear 533 is provided with a ratchet coupling portion 523 that is engaged with the ratchet-type gear 533 so as to restrict rotation in the other direction (CR).

That is, the ratchet coupling portion 523 is provided with one or more gear teeth having an end portion on the other direction (CR) side formed in a vertical step shape, and an end portion on the one direction side (R) side formed in an inclined shape, and the ratchet type gear 533 It is preferable that the end of the other direction (CR) side is formed in an inclined shape, and the end of the one direction (R) side is provided with a plurality of gear teeth formed in a vertical step shape.

Here, the ratchet coupling portion 523 is elastically supported radially outward by the elastic force of the gear blade portion 520 and is bitten by the ratchet-type gear 533.

In detail, when a rotational force in the other direction (CR) is applied to the ratchet coupling portion 523, the vertical cross-sections of the ratchet coupling portion 523 and the ratchet-type gear 533 are in contact with each other and are engaged with each other. The rotation of the other direction CR of the 520 may be restricted and fixed.

And, when a rotational force in one direction (R) is applied to the ratchet coupling part 523, the inclined surfaces of the ratchet coupling part 523 and the ratchet-type gear 533 are in contact with each other and slide, but the gear blade part 520 is The gear blade portion 520 may be rotated in one direction (R) in a state in which a click feeling is provided by elastic deformation in the radial direction inward and outward.

In addition, the elevating guide hole 521 is provided in the axial direction at the central portion of the gear blade portion 520 and is coupled to the outer periphery of the gear body portion 570. Accordingly, one side of the outer circumference of the gear body 570 and the inner circumference of the elevating guide hole 521 has an elevating protrusion 572 protruding, and an elevation guiding the elevating of the elevating protrusion 572 on the opposite side. Although the groove portion 522 may be formed,

In the present embodiment, the lifting guide hole 521 is provided with the lifting groove 522 and the gear body 570 is provided with the lifting protrusion 572 as an example.

In detail, the elevating groove portion 522 is preferably provided in a shape having a polygonal cross-sectional profile, but at the lower portion, the elevating protrusion 572 to be described later is engaged so that the position of the gear body portion 570 is fixed when elevating. It is preferable that the elevating portion 572a is provided in one direction.

Meanwhile, the gear body part 570 is coupled to be rotated selectively with the reel part 540 to maintain the tightening and tightening state of the tightening object as it slides up and down along the lifting guide hole 521, and is lifted to the central part. A cam hole 571 is formed. In addition, the gear body portion 570 is preferably provided with a resin material such as reinforced plastic.

In detail, it is preferable that an elevating protrusion 572 protrudes radially outwardly on the outer periphery of the gear body portion 570, and the elevating protrusion 572 is preferably elevated along the elevating groove 522.

In addition, the elevating protrusion 572 is preferably provided in a shape having a polygonal cross-sectional profile, but the width in one direction of the elevating protrusion 572 for coupling and elevating with the elevating groove 522 is the elevating groove 522 ) Is preferably formed to correspond to the width in one direction.

On the other hand, in the central portion of the gear body portion 570, a driving protrusion 515 to be described later is formed with an elevating cam hole 571 penetrating in the vertical direction so as to be inserted in the axial direction. In this case, the elevating cam hole 571 is preferably provided to have an inner diameter corresponding to the outer diameter of the driving protrusion 515 to be described later.

At this time, it is preferable that the lower surface of the gear body 570 and the upper surface of the reel 540 are provided with a gear fitting part 574 and a gear coupling part 544 so that they are meshed in the axial direction and rotated integrally. . Here, it is preferable that the gear fitting portion 574 and the gear coupling portion 544 are provided with a gear groove/gear protrusion or a gear protrusion/gear protrusion to be interlocked and interlocked.

For example, the gear coupling part 544 is preferably provided with a plurality of gear protrusions formed in a vertical step shape with an end portion on the other direction (CR) side in an inclined shape, and arranged along the circumferential direction in one direction (R) side end portion. .

In addition, it is preferable that the gear fitting part 574 is provided with a plurality of gear protrusions formed in a circumferential direction in which an end of the other direction (CR) side is formed in an inclined shape, and an end of one direction (R) side is formed in a vertical step shape. .

Accordingly, when the gear body portion 570 descends, the inclined portions of the gear protrusions are in contact with each other and are smoothly engaged. When the gear body portion 570 is rotated in one direction (R), the stepped surfaces of the gear protrusions are in contact with each other, so that the gear body portion 570 ) May be accurately transmitted to the reel unit 540.

To this end, the gear body part 570 is assembled so as to be raised and lowered inside the gear blade part 520 so that rotation in the other direction (CR) is restricted to the housing part 530, and the reel part 540 when descending ) And integrally coupled to rotate in one direction (R).

On the other hand, as shown in Figure 4a, when the gear body 570 is inserted into the elevating guide hole 521 by an external force and lowered, the gear coupling part 544 and the gear fitting part 574 are in close contact with each other and are engaged. The gear body portion 570 and the reel portion 540 may be integrally rotated.

In addition, when the gear body 570 is rotated in one direction (R), the reel part 540 is coupled with the gear body 570 to rotate in one direction (R) so that the wire may be wound.

At this time, when an external force is applied to the wire due to the user moving while wearing the tightening object, a rotational force in the other direction (CR) is applied to the reel unit 540.

Here, since the reel part 540 is in a state coupled to the gear body part 570, the rotational force of the reel part 540 is applied to the gear fitting part 574 and the gear through the vertical stepped surface of the gear coupling part 544. It may be transmitted to the gear body 570.

At this time, since the gear body 570 is in a state in which rotation in the other direction (CR) is restricted, the rotation of the reel part 540 in the other direction (CR) is restricted, so that the wire that has been previously wound is not unwound and can be maintained in a wound state. have.

On the other hand, as shown in FIG. 4B, when the gear body 570 is raised by an external force, the gear coupling part 544 and the gear fitting part 574 are separated, and the reel part 540 is separated from the gear body part 570 ) And can be freely rotated. At this time, when the wire is pulled, the wire wound around the reel unit 540 may be unwound.

Meanwhile, referring to FIGS. 3A and 3B, the driving knob 510 is rotatably coupled to an upper portion of the housing unit 530, and the elevating cam hole 571 is used to switch the tightening and loosening state of the fastening object. ) Is provided with a fixing protrusion 512 for transmitting the rotational force to selectively induce and release the coupling between the gear body 570 and the reel 540.

That is, the drive knob 510 is formed of a resin material such as reinforced plastic and is disposed above the gear body 570, and the gear body 570 is transmitted by the drive knob 510 It can be lifted and rotated by the external force.

Here, the drive knob part 510 is coupled to surround the outer circumference of the upper end of the housing part 530 to apply rotation to the tightening device, and the drive cap part 510a is attached to and detached from the lower part of the drive cap part 510a. It is preferable that the wing portion 520 is provided including a locking driving portion 510b that is coupled to the wing portion 520.

Of course, in some cases, the driving cap part 510a and the locking driving part 510b may be provided integrally, but in this embodiment, the driving cap part 510a and the locking driving part 510b are separately provided. As illustrated and described.

At this time, the driving cap part 510a is provided in a container shape having an inner diameter that exceeds the upper outer diameter of the housing part 530, and it is preferable that a grip cover 519 made of an elastic material is mounted on the outer circumferential surface to improve grip. .

In addition, a knob cover capable of freely selecting a design according to a user's taste may be detachable from the upper surface of the driving cap part 510a, and it is preferable that it is provided to be easily detached from the upper surface of the driving cap part 510a.

In addition, a plurality of housing coupling protrusions 514 are protruded radially inward at the bottom of the inner circumference of the driving cap portion 510a, and a ring-shaped fastening step 532 is formed on the outer circumference of the housing 530 in a radial direction It is built up. That is, the drive cap part 510a is provided to have an inner diameter corresponding to the outer diameter of the fastening step 532, and the housing coupling protrusion 514 protruding radially inward from the inner circumference of the driving cap part 510a is fastened. It may be caught on the lower end of the stepped 532.

At this time, the housing coupling protrusion 514 is formed so that the lower end is inclined upwardly toward the radially inward, and the upper end is formed to be flat, and the fastening step 532 is formed with the upper end to be inclined downwardly toward the radially outer side, and the lower end is flat. Is formed. Accordingly, the inclined lower end of the housing engaging protrusion 514 slides along the inclined upper end of the fastening step 532 so that the housing engaging protrusion 514 can be smoothly moved to the lower portion of the fastening step 532. have.

In addition, the flat upper end of the housing coupling protrusion 514 is caught on the flat lower end of the fastening step 532 so that the drive cap part 510a and the housing part 530 can be hooked stably, and the drive cap part (510a) may be rotated in a state assembled to the upper end of the housing part 530.

In this way, driving parts such as the housing part 530, the auxiliary cap part 550, and the driving cap part 510a may be combined by a simple process of pressing two adjacent parts in the vertical direction, and between the parts to be combined Since assembly is completed simply by placing the rotating parts, productivity of the product can be improved.

In addition, since the fixing means for bonding between the component parts is removed, damage to the resin parts due to the metal parts used as the fixing means can be fundamentally blocked when operating through external force, so that the durability of the product can be improved.

In addition, it is preferable that the coupling protrusion 513 protrudes downward on the lower surface of the driving cap part 510a. At this time, it is preferable that at least one of the coupling protrusions 513 is coupled to the coupling groove of the locking driver 510b.

In addition, a fixing protrusion 512 having a polygonal cross-sectional profile may protrude at the center of the lower surface of the driving cap part 510a so that the coupling protrusions 513 are aligned and coupled. The fixing protrusion 512 may be inserted through the driving protrusion 515 of the locking driving part.

In detail, the driving protrusion 515 protrudes downward in the central portion of the lower surface of the locking driving part 510b, and the inside of the driving protrusion 515 is preferably formed to have a depth and an area corresponding to the fixing protrusion 512.

Through this, when the fixing protrusion 512 is inserted into the driving protrusion 515, each of the engaging protrusions 513 can be automatically aligned and coupled, so that the locking driving part 510b is the driving cap part 510a. ) And rotates together.

On the other hand, the driving protrusion 515 is fitted in the axial direction of the elevating cam hole 571, and is preferably provided to have an outer diameter corresponding to the inner diameter of the elevating cam hole 571. In addition, a cam groove portion 571a inclined upward in one direction R is provided on the inner circumference of the elevating cam hole 571, and is inserted along the inner circumferential surface of the cam groove portion 571a on the outer circumference of the driving protrusion 515. A guide cam 516 that is slip-moved is provided.

That is, the guide cam 516 is formed to protrude stepwise from the outer periphery of the driving protrusion 515 in the radial direction, but the stepped surface at the end side in one direction (R) and the other direction (CR) goes in one direction (R). It is formed with an upwardly inclined slope.

In this case, the cam groove portion 571a and the guide cam 516 may be provided in plurality on the inner circumference of the elevating cam hole 571 and the outer circumference of the driving protrusion 515 to form a corresponding pair.

Here, the driving protrusion 515 is inserted into the elevating cam hole 571 so that the guide cam 516 is inserted into the cam groove 571a.

At this time, the stepped surfaces in one direction R and the other direction CR of the guide cam 516 are disposed to face the inner surfaces of the one direction R and the other direction CR of the cam groove portion 571a. In addition, when the driving protrusion 515 rotates in one direction (R) and the other direction (CR), the inner surface of the cam groove portion 571a in one direction (R) and the other direction (CR) is in one direction of the guide cam 516 ( R) and the other direction (CR) can be slip-moved in contact with the stepped surface.

On the other hand, referring to FIGS. 4B to 5A, it is preferable that the guide cam 516 has a stopper stepped portion 516a formed along an end disposed opposite the edge of the cam groove 571a when rotating in one direction (R). .

That is, in a state in which the gear body part 570 and the reel part 540 are rotated to be coupled to each other, one direction of the guide cam 516 disposed opposite to the edge of the cam groove 571a on the one-direction (R) side ( At the lower end of the R) side, the stopper stepped portion 516a recessed upwardly is formed.

At this time, the stopper stepped portion 516a is horizontal along a height corresponding to the upper edge of the cam groove portion 571a when the one-direction (R) side edge of the guide cam 516 descends. It can be formed by opening in the direction. Through this, when the stopper stepped portion 516a is rotated in one direction (R) of the locking driving portion 510b, the stopper stepped portion 516a is seated on the upper edge of the one-direction (R) side of the cam groove portion 571a, and the gear body portion 570 descends. State can be maintained.

That is, when the drive knob 510 is rotated in one direction (R) while the gear body part 570 is raised, the inner surface of the cam groove part 571a in one direction (R) side becomes the guide cam 516 ) And the gear body portion 570 is lowered along the stepped surface in one direction (R) side.

At this time, when the gear body portion 570 is lowered so that the gear engaging portion 574 and the gear engaging portion 544 are engaged, the stopper stepped portion 516a moves in one direction (R) of the cam groove portion 571a. It is seated on the top edge of the side.

Accordingly, a malfunction in which the gear body portion 570 is raised due to an exercise shock, not a user's direct manipulation, is prevented, and thus a sudden loosening of the wire and a safety accident resulting therefrom can be prevented, thereby improving the safety of the product.

On the other hand, as shown in Figures 4a to 5b, the wire tightening device 500 is the gear body part by rotational force as the user rotates the drive cap part 510a in one direction (R) or the other direction (CR). It is preferable that the 570 is elevated and provided so as to be selectively coupled to the reel part 540.

First, as shown in FIG. 5A, when the drive cap part 510a is rotated in the other direction (CR) while the gear body part 570 is lowered, the stepped surface in the other direction (CR) of the guide cam 516 is a cam groove part. It is in contact with the inner surface of the other direction CR of 571a.

Here, the gear body portion 570 is formed inside the gear blade portion 520 and the other direction (CR) rotation is restricted through the combination of the lifting protrusion 572 and the lifting groove 522 , The guide cam 516 presses the inner surface of the cam groove portion 571a in the other direction (CR) in an upward diagonal direction toward the other direction (CR) through the slope of the stepped surface in the other direction (CR).

Accordingly, as shown in FIG. 5B, the inner surface of the cam groove 571a in the other direction (CR) is slip-moved in a diagonal direction along the stepped surface of the guide cam 516 in the other direction (CR), and the gear body part ( 570) can be raised.

At this time, the gear coupling portion 544 and the gear fitting portion 574 are spaced apart from each other, and the reel portion 540 is separated from the gear body portion 570 to be converted into a freely rotatable state, and the reel portion 540 It can be unwound by pulling the wire wound in

That is, the coupling between the reel portion 540 and the gear body portion 570 is released, and as the wire of the reel portion 540 is unwound, the object to be tightened may be converted into an unfastened state.

In addition, the gear blade portion 520 is provided in a state in which the ratchet-type gear 533 and the ratchet coupling portion 523 are engaged with each other, and is provided in a state in which lifting and rotation in other directions are restricted, unlike the prior art. When the gear blade portion 520 is raised, fatigue failure due to bending deformation that may occur at the end of the gear blade portion 520 is prevented.

In addition, foreign matter such as dust introduced from the through part 538a stays in the gap between the lifting groove 522 and the lifting protrusion 572 to limit upward movement. Accordingly, the movement of foreign substances to the gear blade portion 520, the gear body portion 570, and the driving knob portion 510 is restricted, thereby reducing rotational force and preventing malfunction of the product.

On the other hand, referring to FIGS. 4A to 6A, it is preferable that a stepped portion 527 recessed upwardly along the rotation direction of the gear blade portion 520 is formed at the lower surface of the gear blade portion 520. . In addition, the stepped portion 527 may be coupled to the rotation pressing portion 517 to prevent separation of the locking driving portion and the gear blade portion 520.

Therefore, it protrudes downward on the lower surface of the drive knob 510 so as to press the ratchet coupling part 523 toward the ratchet-type gear 533 radially outward when rotating in the other direction, and the stepped part 527 at the end It is preferable that the rotation pressing unit 517 is provided with a rotation protrusion 517a that is caught in ).

In detail, the rotational pressing part 517 protrudes downward from the lower surface of the locking driving part 510b corresponding to the position coupled to the stepped part 527, and is provided in plural by being spaced apart at a preset angle along the circumferential direction. It is desirable to be.

At this time, the rotation pressing part 517 is preferably provided so that the outer circumferential surface is in close contact with the outer circumference of the stepped portion 527, but the inner circumferential surface has a radial width that is in close contact with the outer circumference of the opposite surface of the stepped portion 527.

Here, the end of the rotation pressing part 517 is preferably formed with the rotation protrusion 517a formed to protrude radially inward, and the stepped part 527 when the locking driving part 510b rotates in one direction (R). ) And rotates in one direction (R).

On the other hand, referring to FIGS. 4B to 6B, when the locking driving part rotates in the other direction (CR), the rotation pressing part 517 can stably press the contact protrusion 525.

In detail, the contact protrusion 525 is rotated in a state in which the locking driving part 510b is rotated in the other direction (CR) at an angle at which the gear engaging part 574 and the gear engaging part 544 are completely engaged. It is preferable to protrude radially inward of the ratchet-type gear 523 on the opposite surface of the stepped portion 527 so as to correspond to the position of the portion 517.

Here, when the distance between the inner circumference of the contact protrusion 525 and the front end of the stepped portion 527 is set to be greater than or equal to the maximum width between the outer circumferential surface and the inner circumferential surface of the rotation pressing unit 517, the rotation pressing unit 517 Since the contact protrusion 525 is not pressed radially outward, the ratchet coupling portion 523 and the ratchet-type gear 533 are not firmly engaged.

Accordingly, the distance between the inner circumference of the contact protrusion 525 and the tip end of the stepped portion 527 is preferably set to be less than the maximum width between the outer circumferential surface and the inner circumferential surface of the rotation pressing unit 517.

Through this, when the rotation pressing part 517 presses the contact protrusion 525 and the stepped part 527 when the locking driving part 510b is rotated, it is concentrated on one side of the outer and inner circumferential surfaces of the stepped part 527. As the load applied to it can be distributed, abrasion or damage is prevented, so the durability of the product can be improved.

In addition, when the rotational pressing part 517 presses the contact protrusion 525, the ratchet coupling part 523 and the ratchet-type gear 533 are more stably engaged, and the gear blade part 520 and the gear The clearance space between the body parts 570 may be removed.

Meanwhile, referring to FIGS. 3A to 6A, a locking protrusion 524 with a locking protrusion recessed in one direction protrudes from an upper portion of the gear blade 520, and the locking protrusion 510b has an end portion. It is preferable that a locking hole 518 in which an elastic support rib 518a protruding on one surface is formed so as to be elastically caught on the surface.

In detail, it is preferable that the locking protrusions 524 are separated from each other at a predetermined angle along the circumferential direction so as to correspond to the quantity of the rotation pressing part 517 and are provided in plural.

Further, the locking hole 518 disposed opposite to the locking protrusion 524 is provided in the locking driving part 510b, and the locking hole 518 is preferably formed through the locking driving part 510b in the vertical direction. Do.

In addition, the other direction (CR) side width of the locking hole 518 is formed smaller than the width of the locking protrusion 524, and one direction (R) side width is formed larger than the width of the locking protrusion 524, the It is preferable that the locking protrusion 524 is inserted into the locking hole 518 and pressed radially inward when rotating in the other direction (CR).

Therefore, it is preferable that the elastic support rib 518a is formed inside the locking hole 518 in the radial direction by the locking protrusion 524.

In addition, an elastic granting hole 518c is disposed inside the elastic support rib 518a in the radial direction. Therefore, when the elastic support rib 518a is pressed by the locking protrusion 524, the elastic support rib 518a may be elastically deformed radially inward toward the elastic provision hole 518c.

Through this, since the elastic support rib (518a) can be moved radially inward by the elastic granting hole (518c), twisting or damage caused by the pressing force of the locking protrusion 524 is prevented, thereby increasing the durability of the product. It can be further improved.

In addition, when the locking driving part 510b rotates in one direction (R), it is preferable that a locking groove 518b is formed at an end of the locking hole 518 on the other direction CR side. The locking groove 518b is provided to correspond to the width and shape of the locking protrusion 524 in the other direction CR, and restricts rotation of the locking protrusion 524 in the other direction CR.

On the other hand, referring to Figures 3a to 6b, the end of the elastic support rib (518a) one direction (R) side end is formed concave toward the other direction (CR) and the other direction (CR) side end is formed convex. It is preferable that the guide protrusion (518d) is provided.

In addition, the guide protrusion 518d may be provided on each of the plurality of elastic support ribs 518a, but may be provided only on one of the elastic support ribs 518a in some cases.

In this case, it is preferable that the guide protrusion 518d is formed in a portion where the end portion of one direction (R) side and the end portion of the other direction (CR) side are connected, that is, the tip portion is formed in a rounded outer profile. Here, when the locking protrusion 524 is rotated from the other direction (CR) side of the guide protrusion 518d toward one direction (R) side, the inner circumference of the locking protrusion 524 is in the other direction of the guide protrusion 518d. It can be slid and contacted from the (R) side to the tip side.

Through this, as the front end of the guide protrusion 518d is formed to be rounded, the rotational pressing protrusion 517 gently slides into contact with the guide protrusion 518d and presses the distal end to give a click feeling, thus providing a more operability. It can be improved.

That is, referring to FIGS. 6A to 6B, when the locking driving part 510b and the gear blade part 520 are coupled, the locking protrusion 524 is on the one-direction (R) side of the rotational pressing part 517. As it is disposed, the rotation angle of the drive cap portion 510a for winding the wire is reduced, so that the wire is wound only by rotating it at a predetermined angle, so that the usability of the product can be improved.

Here, the locking protrusion 524 may have various widths in the circumferential direction to adjust the rotation angle of the driving cap part 510a, and a distance spaced apart from the rotation pressing part 517 may be adjusted.

In this way, the driving cap part 510a elastically presses the locking protrusion 524 and the rotational pressing part 517 toward the radially inner side only when a certain or more external force is applied for rotation to tighten the object to be tightened. And since it rotates so that the unlocked state is switched, malfunction due to impact or the like is prevented, so that the driving reliability and safety of the product may be further improved.

Of course, the wire tightening device 500 according to the present invention is not limited to being used only for shoes, and accessories such as hats, helmets, belts, gloves, bags, sports equipment such as snowboards, water skis, and other clothes. In addition to being applied to a number of devices worn by tightening the string, it will be said that application to other devices to which the technical idea of the present invention is applied also falls within the scope of the present invention.

At this time, the terms such as "include", "consist", "have" or "have" described above mean that the corresponding component can be present unless otherwise stated otherwise, It should be construed as not excluding components, but as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

[Explanation of code]

500: wire tightening device 510: drive knob

510a: driving cap portion 510b: locking driving portion

520: gear blade portion 530: housing portion

540: reel part 550: auxiliary cap part

560: coupling base portion 570: gear body portion

Claims

A cylindrical housing portion having an accommodation space formed therein and having a ratchet-type gear in the inner circumference;

A reel portion which is rotatably inserted into the lower inner portion of the housing portion so that the wire is wound when rotated in one direction;

A gear blade portion provided with a ratchet coupling portion coupled to the ratchet-type gear so as to constrain rotation in other directions, and having an elevating guide hole;

A gear body that is inserted into the elevating guide hole and selectively coupled with the reel portion to be rotated integrally as the slide is elevated, the elevating cam hole being formed; And

A wire tightening device including a drive knob portion rotatably coupled to an upper portion of the housing portion and protruding downwardly and provided with a fixing protrusion for transmitting a rotational force to the elevating cam hole.
The method of claim 1,

The gear body portion is provided with an elevating cam hole formed with a cam groove inclined upward in one direction on the inner periphery,

The driving knob part is provided with a driving protrusion in which a guide cam that is inserted into the cam groove and slipped is protruded,

The guide cam has a stopper stepped portion recessed upwardly at a lower end of one direction so as to be seated on the edge of the cam groove portion when rotating in one direction to maintain a lowered state of the gear body,

A wire tightening device, characterized in that the upper part of the reel part and the lower part of the gear body part are formed with engaging parts and engaging parts that are selectively engaged with each other.
The method of claim 1,

A wire tightening device, characterized in that an elevating protrusion is formed on one side of the outer circumference of the gear body and the inner circumference of the elevating guide hole, and an elevating groove for guiding the elevating of the elevating protrusion on the opposite side.
The method of claim 1,

The driving knob part includes a driving cap part for applying rotation to the tightening device, and a locking driving part coupled with the gear blade part,

In the upper part of the gear blade, a locking protrusion with a locking protrusion recessed in one direction protrudes,

And a locking hole in which an elastic support rib protruding on one surface is formed in the locking driving part so that the locking jaw is selectively elastically locked at an end thereof.
The method of claim 1,

A stepped portion recessed upwardly is formed on a lower surface of the gear blade,

It is characterized in that a rotational pressing portion protruding downward on the lower surface of the driving knob portion so as to press the ratchet coupling portion radially outward toward the ratchet-type gear when rotating in the other direction, and having a rotation protrusion engaging the stepped portion at an end thereof is provided. Wire fastener.