Wire tightening device with simplified structure

Abstract

The present invention relates to a wire tightening device with a simplified structure and, more specifically, to a wire tightening device that improves durability of the wire tightening device by protecting components that provide a restraining force, such as a ratchet gear or a stopper, against impacts applied to the wire tightening device, and improves productivity and economic efficiency by reducing the number of components of a conventional wire tightening device, by integrally forming the stopper in a reel part and providing a ring-shaped elastic part at a lower portion, the elastic part being arranged to correspond to and contact a housing part.

Description

Wire clamping device with simplified structure

[0001] The present invention relates to a wire tightening device with a simplified structure, and more specifically, to a wire tightening device that protects an upper cover from external impact, integrates a stopper into a reel portion, and has a ring-shaped elastic portion that contacts a housing portion at the lower portion, thereby reducing the number of components of a conventional wire tightening device and improving productivity and economy.

[0002] Due to the recent increase in leisure activities, people are wearing not only regular sneakers but also sports shoes such as hiking shoes, running shoes, and golf shoes. These shoes are equipped with shoelace wire tightening devices that allow you to easily tighten and loosen the shoelaces without having to tie them individually, providing convenience when putting on and taking off the shoes.

[0003] This wire tightening device, as disclosed in Korean Patent Publication No. 10-1833680 (shoelace tightening device), uses a ratchet gear to restrain a bobbin on which a wire-shaped shoelace is wound by a stopper unit, so that the wire can be tightened when the rotary cover is rotated in one direction, and when the restraint state of the stopper unit controlling the ratchet is released, the bobbin can rotate freely, thereby allowing the shoelace to be released.

[0004] (Patent Document 1) Republic of Korea Patent No. 10-1833680 (February 22, 2018)

[0005] The purpose of the present invention is to provide a wire tightening device that improves the durability of a wire tightening device by protecting a component that provides a restraining force, such as a ratchet gear or a stopper, against an impact applied to the wire tightening device, and that reduces the components of a conventional wire tightening device by providing a stopper integrally formed in a reel portion and a ring-shaped elastic portion that contacts the housing portion at the bottom, thereby improving productivity and economy.

[0006] The purposes of the present invention are not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art from the description below.

[0007] In order to achieve the above object, a wire tightening device having a simplified structure according to the present invention comprises: a lower cover (10) having a receiving groove (11) formed therein, a ratchet gear (12) formed along an inner periphery at an upper end of the receiving groove (11), and a catch (13) provided on the inner side of a lower end; a reel part (20) which is rotatably inserted into the receiving groove (11), has a stopper (21) provided at an upper end that engages with the ratchet gear (12) and provides a restraining force so that the reel part can rotate in one direction, and has a corresponding catch member (22) provided at a lower end that contacts the catch (13) corresponding to the reel part (20) so that a wire is wound when rotated; and a rotating cover (30) coupled to an upper surface of the reel part (20).

[0008] In addition, the lower cover (10) is characterized in that a guard part (14) is provided in a form that surrounds the rotary cover (30).

[0009] In addition, the guard part (14) is characterized in that a space is formed at a predetermined interval so that the user can rotate the rotary cover (30).

[0010] In addition, the corresponding engaging member (22) is characterized in that it is provided in the shape of a ring that provides elastic restoring force in an outward direction from the lower portion of the reel portion (20).

[0011] The wire tightening device with a simplified structure according to the present invention has the effect of improving the durability of the wire tightening device by protecting components that provide restraint, such as a ratchet gear or a stopper, against impact applied to the wire tightening device.

[0012] In addition, by integrating the stopper into the reel portion and providing a ring-shaped elastic portion that contacts the housing portion at the bottom, the number of components of the existing wire tightening device is reduced, thereby improving productivity and economy.

[0013] FIG. 1 is an exploded perspective view from above of a wire tightening device having a simplified structure according to a preferred embodiment of the present invention.

[0014] FIG. 2 is an exploded perspective view of a wire tightening device having a simplified structure according to a preferred embodiment of the present invention, viewed from below.

[0015] FIG. 3 is a cross-sectional view showing a state in which a reel portion and a stopper unit of a wire tightening device having a simplified structure according to a preferred embodiment of the present invention are mutually coupled.

[0016] FIG. 4 is a cross-sectional view showing a state in which the reel part and the stopper unit of a wire tightening device having a simplified structure according to a preferred embodiment of the present invention are separated from each other.

[0017] <Explanation of symbols>

[0018] 10: Lower cover

[0019] 11: Receiving groove 12: Ratchet gear

[0020] 13: Jaw 14: Guard

[0021] 15: Wire entrance

[0022] 17: Departure prevention bump

[0023] 20: Lilboo

[0024] 21: Stopper 22: Counter-acting member

[0025] 23: Wire passage

[0026] 25: Flange 26: Hollow

[0027] 27: Binding groove 28: Insertion protrusion

[0028] 30: Rotating cover

[0029] 31: Anti-separation stopper 32: Stopper

[0030] 33: Insertion hole

[0031] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0032] The specific details for implementing the present invention will be described in detail with reference to the attached drawings. Regardless of the drawings, the same reference numerals refer to the same components, and "and / or" includes each and every combination of one or more of the mentioned items.

[0033] The terminology used herein is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms, unless specifically stated otherwise. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components in addition to the components mentioned.

[0034] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0035] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0036] FIG. 1 is an exploded perspective view from above of a wire tightening device with an improved structure according to a preferred embodiment of the present invention, and FIG. 2 is an exploded perspective view from below of a wire tightening device with an improved structure according to a preferred embodiment of the present invention.

[0037] As shown, the wire tightening device with an improved structure according to an embodiment of the present invention largely includes a lower cover (10), a reel part (20), and a rotating cover (30).

[0038] First, the lower cover (10) is sewn to the upper of the shoe to support the wire tightening device as a whole. Specifically, it has a plate-shaped support plate, and a support wall extending vertically from the upper surface of the support plate is formed to form a receiving groove (11) in the center portion in which a reel part (20) is received.

[0039] In addition, the lower cover (10) is provided with a guard part (14) that wraps around the side of the rotary cover (30) along the perimeter of the receiving groove (11) at a predetermined interval, and the guard part (14) has a space formed at a predetermined interval so that the user can rotate the rotary cover (30).

[0040] In other words, the guard part (14) has a wall shape that extends vertically from the upper surface of the support plate.

[0041] Through this, after the rotary cover (30) is connected to the reel portion (20) to be described later, even if the user applies an impact to the wire tightening device during various leisure activities, the guard portion (14) receives the impact first, thereby preventing damage to the reel portion (20) and the rotary cover (30).

[0042] Here, one or more sewing guide grooves may be formed to enable accurate sewing along the edge of the support plate, and the sewing guide grooves serve as a guide to enable workers at a shoe manufacturing site to accurately sew along the sewing line when sewing the wire tightening device, thereby improving the commercial value of shoes on which the wire tightening device is installed by ensuring that the attachment state of the wire tightening device is clean and neat.

[0043] Next, the reel part (20) is rotatably inserted into the receiving groove (11) of the lower cover (10), and a stopper (21) that engages with the ratchet gear (12) at the upper end and provides a restraining force so that it can rotate in one direction is provided, and a corresponding engaging member (22) that contacts the engaging jaw (13) at the lower end is provided, and when the reel part (20) rotates, the wire is wound along the outer circumference.

[0044] Meanwhile, the stopper (21) has a piece-shaped shape so as to have elasticity radially from the upper circumference of the reel (20), and a corresponding ratchet gear that engages with the ratchet gear (12) is formed at the end.

[0045] Here, the lower cover (10) has a cylindrical shape with an open upper surface, and prevents the reel part (20) from being separated from the wire tightening device in the up, down, left, and right directions by rotation.

[0046] In other words, the reel part (20) moves downwards and the corresponding engaging member (22) moves down below the engaging jaw (13), and the corresponding engaging member (22) is positioned at the lower part of the engaging jaw (13) by elastic force, but the facing surfaces of the engaging jaw (13) and the corresponding engaging member (22) are slanted so that when the user lifts the reel part (20) through the rotary cover (30), it can slide up.

[0047] Alternatively, the corresponding catch member (22) may be formed in a form in which a portion of the outer portion protrudes so as to be obliquely opposed to the lower surface of the catch (13) so as to be caught on the lower portion of the catch (13).

[0048] In addition, the corresponding retaining member (22) is provided in the shape of a ring that provides elastic restoring force in an outward direction from the lower portion of the reel portion (20).

[0049] In other words, a plate-shaped flange (25) is provided at the lower part of the reel (20), and a part of the flange (25) is formed as an oval-shaped hollow portion (26) inclined in the circumferential direction, so that the corresponding engaging member (22) has elasticity toward the central axis.

[0050] However, in one embodiment of the present invention, the shape of the hollow portion (26) is depicted as an oval inclined in the direction of a fan-shaped arc, but this shape is not limited thereto.

[0051] Next, the lower part of the lower cover (10) includes a wire inlet (15) on one side of the outer circumference through which the wire is introduced from the outside, and the reel part (20) has a passage formed corresponding to the wire inlet (15) so that the wire can pass through the reel part (20).

[0052] In other words, the reel part (20) is provided with a wire passage (23) corresponding to the wire inlet (15), and when the reel part (20) rotates around the central axis of the reel part (20) formed between the wire passages (23), the wire is wound around the reel part.

[0053] In addition, the lower cover (10) is provided with a detachment prevention step (17) to prevent the rotary cover (30) from detaching, and the rotary cover (30) is provided with a detachment prevention catch (31) on the inside to be caught on the detachment prevention step (17), thereby limiting the distance that the rotary cover (30) can move vertically.

[0054] Next, the rotary cover (30) is placed on the upper part of the lower cover (10), and is provided with a ring-shaped hook (32) facing downward, and the reel part (20) is provided with a fastening groove (27) corresponding to the hook (32).

[0055] In addition, the reel part (20) is provided with a catch (28) on one side of the upper portion of the stopper (21), and the inner surface of the rotary cover (30) is provided with a catch hole (33) so that the catch (28) can be inserted, thereby improving the bonding strength between the reel part (20) and the rotary cover (30).

[0056] However, in one embodiment of the present invention, a fitting projection (28) is formed in the stopper (21) and a fitting hole (33) is formed in the rotary cover (30), but it is natural to change the design so that the male and female coupling forms are reversed.

[0057] Next, the mutual coupling and separation of the reel part (20) and the rotary cover (30) of the present invention will be described through FIGS. 3 and 4.

[0058] FIG. 3 is a cross-sectional view showing a state in which a reel part and a stopper unit of a dial-type wire tightening device according to a preferred embodiment of the present invention are mutually coupled, and FIG. 4 is a cross-sectional view showing a state in which a reel part and a stopper unit of a dial-type wire tightening device according to a preferred embodiment of the present invention are mutually separated.

[0059] As shown, the wire tightening device with an improved structure of the present invention is configured such that the reel part (20) is placed in the receiving groove (11), the rotating cover (30) is fitted and fixed to the reel part (20), and a detachment prevention catch (31) is placed downward of the detachment prevention protrusion (17).

[0060] As shown, the anti-separation protrusion (17) has the shape of a protrusion protruding outward from the outer surface of the lower cover (10), and the anti-separation catch (31) has the shape of a protrusion protruding inward from the outer surface of the rotary cover (30) so as to be interlocked with each other.

[0061] In addition, the lower cover (10) is provided with a catch (13) on the inside of the lower part, and the reel part (20) is provided with a corresponding catch member (22) that contacts the catch member (13), and the user can confirm the coupling and separation of the reel part (20) and the rotary cover (30) as the catch member (13) and the corresponding catch member (22) contact each other by the lifting and lowering operation of the rotary cover (30).

[0062] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. A lower cover (10) having a receiving groove (11) formed inside, a ratchet gear (12) formed along the inner circumference at the upper end of the receiving groove (11), and a catch (13) provided on the inner side of the lower end; A reel part (20) that is rotatably inserted into a receiving groove (11), has a stopper (21) provided at the upper end that engages with the ratchet gear (12) and provides a restraining force so that it can rotate in one direction, and has a corresponding engaging member (22) that contacts the engaging jaw (13) at the lower end so that the wire is wound when rotated; and A wire tightening device having a simplified structure including a rotating cover (30) coupled to the upper surface of the above reel portion (20).

2. In paragraph 1, The above lower cover (10) is A wire tightening device with a simplified structure characterized in that a guard part (14) is provided in a form that surrounds the above-mentioned rotary cover (30).

3. In paragraph 2, The above guard part (14) is, A wire tightening device with an improved structure characterized in that a space is formed at a predetermined interval so that a user can rotate the above-mentioned rotary cover (30).

4. In paragraph 1, The above-mentioned countermeasure member (22) is A wire tightening device with an improved structure characterized by being provided in the shape of a ring that provides elastic restoring force in an outward direction from the lower portion of the above reel portion (20).

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