Tightening device

Abstract

The tightening device comprises a bottom piece, a coil, an elastic piece and a cover piece, a first protrusion and a second protrusion are arranged on one side of the bottom piece, the first protrusion is located on the periphery of the second protrusion so that a first containing cavity can be formed between the first protrusion and the second protrusion, and a guide groove is formed in the periphery of the first protrusion; the winding ring is rotationally connected to the second protrusion and located in the first containing cavity so that a rope can be wound. The elastic piece is connected to the second protrusion and the winding ring, and the elastic piece has elasticity so that the winding ring can have the trend of winding the rope body. The cover piece comprises a clamping point matched with the guide groove to limit rotation of the cover piece relative to the bottom piece, a first clamping piece capable of being embedded into the second protrusion to achieve sliding guide and a second clamping piece capable of being clamped to the winding ring and limiting rotation of the winding ring, the cover piece slides to enable the second clamping piece to be separated from the winding ring, and the tightening degree of the rope body can be controlled. The tightening efficiency and the user experience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing, in particular to a tightening device. Background Art

[0002] Traditional tightening methods such as shoe laces and trouser laces all use manual tying, which is very troublesome and easy to accidentally loosen.

[0003] As life becomes more affluent, convenience in all aspects of life has become the direction of improvement for some daily necessities. For example, the use of self-locking mechanisms to easily tighten shoelaces, backpack straps, etc. makes consumers' daily lives convenient and efficient.

[0004] In the existing self-locking mechanism, the rope is pulled out when an external force is applied, and the rope is automatically retracted under the action of the self-locking mechanism when the external force is removed to achieve the tightening process. Therefore, over-tightening often occurs. When over-tightening occurs, the rope can only be pulled out again by external force to reset to a completely relaxed state and then tightened again. It is inevitable that over-tightening may occur again, which brings inconvenience to the use process.

[0005] Therefore, how to provide a tightening device to control the tightening degree of the rope body and improve the tightening efficiency and user experience is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide a tightening device to control the tightening degree of a rope body, thereby improving the tightening efficiency and user experience.

[0007] To achieve the above-mentioned purpose, the present invention provides a tightening device, comprising:

[0008] The bottom piece has a first protrusion and a second protrusion on one side, the first protrusion is located outside the second protrusion so that a first accommodating cavity is formed between the first protrusion and the second protrusion, and a guide groove is provided on the outside of the first protrusion;

[0009] The coil is rotatably connected to the second protrusion and located in the first accommodating cavity for winding the rope;

[0010] an elastic member connected to the second protrusion and the winding coil, the elastic member having elastic force to cause the winding coil to have a tendency to reel in the rope;

[0011] The cover comprises a clamping point adapted to the guide groove to limit the rotation of the cover relative to the base, a first clamping member capable of being embedded in the second protrusion to realize sliding guidance, and a second clamping member capable of being clamped to the winding coil and limiting the rotation of the winding coil. The sliding of the cover can cause the second clamping member to be disengaged from the winding coil.

[0012] Preferably, a protrusion is provided on the outer periphery of the first protrusion, and the edge of the protrusion facing away from the first protrusion protrudes outward to form a guide groove extending to the bottom piece;

[0013] The clamping point is located on the inner circumference of the cover member, so that the clamping point moves in the guide groove along the extending direction of the guide groove.

[0014] Preferably, an annular convex point is provided in the second protrusion, and the annular convex point has a guide surface that is symmetrical in the upper and lower directions;

[0015] The first clamping member includes a column and a clamping ring arranged on the circumference of the column, wherein the clamping ring can move along the guide surface to engage with and disengage from the annular protrusion;

[0016] The second protrusion is provided with a groove extending to the bottom piece to avoid deformation of the annular protrusion.

[0017] Preferably, the winding coil is an integrated structure, comprising a rotating portion, a rope winding portion and a connecting portion arranged from top to bottom, the connecting portion and the second protrusion together form a second receiving groove, the elastic member is located in the second receiving groove and its two ends are respectively connected to the groove and the connecting portion;

[0018] The outer periphery of the rotating part is provided with a first latching tooth;

[0019] The second clamping piece is provided with a second clamping tooth which can be engaged with the first clamping tooth.

[0020] Preferably, the first protrusion is further provided with a rope outlet hole, and the distance between the end of the rope outlet hole away from the bottom piece and the bottom piece in the axial direction of the first protrusion is greater than the distance between the end of the winding coil close to the bottom piece and the bottom piece in the axial direction of the first protrusion.

[0021] Preferably, the outer diameter of the snap ring is smaller than the inner diameter of the second protrusion, and the outer diameter of the snap ring is larger than the inner diameter of the annular protrusion.

[0022] Preferably, the guide surface is a cambered surface or a curved surface.

[0023] Preferably, the end of the column facing away from the cover is provided with a tapered structure, and the end with the smaller tapered structure is located at the end of the column.

[0024] Preferably, a vertically extending reinforcing rib is provided on the outer periphery of the second protrusion, and the reinforcing rib is located between the rotating portion and the bottom piece.

[0025] Preferably, the side of the reinforcing rib facing away from the second protrusion is a curved surface.

[0026] Compared with the above-mentioned background technology, the tightening device provided by the present invention includes a base member, a winding coil, an elastic member and a cover member. A first protrusion and a second protrusion are provided on one side of the base member, and the first protrusion is located on the outer periphery of the second protrusion to form a first accommodating cavity between the first protrusion and the second protrusion. A guide groove is provided on the outer periphery of the first protrusion; the winding coil is rotatably connected to the second protrusion and is located in the first accommodating cavity for winding the rope; the elastic member is connected to the second protrusion and the winding coil, and the elastic member has elastic force so that the winding coil has a tendency to wind up the rope; the cover member includes a card point adapted to the guide groove to limit the rotation of the cover member relative to the base member, a first card member that can be embedded in the second protrusion to realize sliding guidance, and a second card member that can be clamped to the winding coil and limit the rotation of the winding coil. The sliding of the cover member can cause the second card member to disengage from the winding coil.

[0027] The winding coil is rotatably connected to the second protrusion, and then the cover is movably connected to the guide groove of the first protrusion. When the rope body is stretched outward, it will drive the winding coil to rotate, so that the elastic member connected to the second protrusion and the winding coil has a certain torque. When the tension is lost, the elastic member returns to its initial state and drives the winding coil to rotate to retract the rope body. By pressing down and sliding the cover member, the first clamping member extends into and is clamped inside the second protrusion, while the second clamping member is clamped to the winding coil and limits the rotation of the winding coil. In this way, the tightening degree of the rope body can be controlled, and the tightening efficiency and user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a tightening device provided by an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 Exploded diagram;

[0031] Figure 3 A schematic diagram of the internal structure of the tightening device provided by an embodiment of the present utility model;

[0032] Figure 4 A schematic structural diagram of a cover member provided in an embodiment of the present utility model;

[0033] Figure 5 A schematic diagram of the structure of the winding coil provided in an embodiment of the present utility model;

[0034] Figure 6A schematic structural diagram of a bottom member provided in an embodiment of the present utility model;

[0035] Figure 7 A cross-sectional view of a tightening device provided by an embodiment of the present utility model;

[0036] Figure 8 This is a schematic diagram of the structure of the cover provided by the embodiment of the utility model before being pressed down;

[0037] Figure 9 This is a schematic diagram of the structure of the cover provided by the embodiment of the utility model after being pressed down;

[0038] Figure 10 This is a schematic diagram of the structure of the rope provided by an embodiment of the present utility model in its natural state;

[0039] Figure 11 This is a schematic diagram of the structure of the rope provided by the embodiment of the utility model when it is fully pulled out;

[0040] Figure 12 This is a schematic diagram of the structure of the winding coil provided in the embodiment of the present utility model in the locked state.

[0041] in:

[0042] 100 - bottom piece, 110 - first protrusion, 111 - rope outlet hole, 112 - protrusion, 113 - guide groove, 120 - first accommodating cavity, 130 - second protrusion, 131 - annular protrusion, 132 - guide surface, 140 - groove, 150 - reinforcing rib;

[0043] 200 - winding coil, 210 - rotating part, 220 - connecting part, 221 - second accommodating cavity, 222 - limiting member, 230 - rope winding part, 231 - rope body, 232 - fixing hole;

[0044] 300-elastic parts;

[0045] 400 - cover, 410 - second clamping member, 420 - first clamping member, 421 - column, 422 - clamping ring, 430 - clamping point, 440 - rotating surface. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations of the present invention.

[0049] The purpose of the utility model is to provide a tightening device to control the tightening degree of a rope body, thereby improving the tightening efficiency and user experience.

[0050] See also Figures 1 to 7 To achieve the above-mentioned purpose, the present invention provides a tightening device, including a bottom member 100, a winding coil 200, an elastic member 300 and a cover member 400.

[0051] A first protrusion 110 and a second protrusion 130 are provided on one side of the base member 100. The first protrusion 110 is located on the outer periphery of the second protrusion 130 so as to form a first accommodating cavity 120 between the first protrusion 110 and the second protrusion 130. A guide groove 113 is provided on the outer periphery of the first protrusion 110. The first protrusion 110 and the second protrusion 130 can adopt a circular ring structure.

[0052] The coil 200 is rotatably connected to the second protrusion 130 and is located in the first accommodating cavity 120 for winding the rope 231 .

[0053] The elastic member 300 is connected to the second protrusion 130 and the winding coil 200. The elastic member 300 has elastic force so that the winding coil 200 has a tendency to reel in the rope body 231. For example, when an external force pulls the rope body 231 outward, the elastic member 300 begins to store energy as the winding coil 200 rotates. Then, when the external force is removed from the rope body 231, the elastic member 300 begins to drive the winding coil 200 to rotate under the action of the stored energy to reel in the rope body 231.

[0054] The cover 400 includes a card point 430 adapted to the guide groove 113 to limit the rotation of the cover 400 relative to the base 100, a first card 420 that can be embedded in the second protrusion 130 to realize sliding guidance, and a second card 410 that can be clamped on the winding coil 200 and limit the rotation of the winding coil 200. The sliding of the cover 400 can cause the second card 410 to be disengaged from the winding coil 200. The cover 400 is also provided with a rotating surface 440, and the user uses the rotating surface 440 to press down and lift up the cover 400.

[0055] When the cover 400 is pressed down and slid, the first clamping member 420 extends into and is clamped inside the second protrusion 130, and the second clamping member 410 is clamped to the winding coil 200 and restricts the rotation of the winding coil 200; when the cover 400 is lifted up and slid, the first clamping member 420 is released from the clamping state, and the second clamping member 410 is separated from the winding coil 200, and the winding coil 200 can rotate under the action of external force and / or the elastic member 300.

[0056] See also Figures 10 to 12 , the winding coil 200 is rotated and connected to the second protrusion 130, and then the cover 400 is movably connected to the guide groove 113 of the first protrusion 110. When the rope body 231 is stretched outward, it will drive the winding coil 200 to rotate, so that the elastic member 300 connected to the second protrusion 130 and the winding coil 200 has a certain torque. When the tension is lost, the elastic member 300 returns to its initial state and at the same time drives the winding coil 200 to rotate to retract the rope body 231. By pressing down and sliding the cover 400, the first clamping member 420 extends into and is clamped inside the second protrusion 130, while the second clamping member 410 is clamped to the winding coil 200 and limits the rotation of the winding coil 200. In this way, the tightening degree of the rope body 231 can be controlled, thereby improving the tightening efficiency and user experience.

[0057] In this embodiment, a protrusion 112 is provided on the outer periphery of the first protrusion 110, and the edge of the protrusion 112 on one side away from the first protrusion 110 protrudes outward to form a guide groove 113 extending to the bottom piece 100; the protrusions 112 are evenly distributed on the outer periphery of the first protrusion 110, and the number of the protrusions 112 is preferably four, and the card point 430 is located on the inner peripheral surface of the cover 400. The card point 430 is carded into the corresponding guide groove 113, so that the cover 400 is carded to the bottom piece 100 to limit the mutual separation of the cover 400 and the bottom piece 100. The card point 430 moves in the guide groove 113 along the extension direction of the guide groove 113 to meet the downward pressure of the cover 400 relative to the bottom piece 100 and the upward lifting after the downward pressure.

[0058] See also Figure 8 and Figure 9 In some embodiments, an annular protrusion 131 is provided inside the second protrusion 130, and the annular protrusion 131 has a guide surface 132 that is symmetrical in the upper and lower parts, and the connection point of the two guide surfaces 132 is the smallest inner diameter point of the annular protrusion 131; the first clamping member 420 includes a column 421 and a clamping ring 422 arranged on the circumference of the column 421, and the clamping ring 422 can move along the guide surface 132 to clamp and disengage the annular protrusion 131; the second protrusion 130 is provided with a groove 140 extending to the bottom member 100 to avoid deformation of the annular protrusion 131.

[0059] Among them, the snap ring 422 of the column 421 enters the annular protrusion 131 along the guide surface 132 located on the upper side until the snap ring 422 of the column 421 is in contact with the guide surface 132 located on the lower side, then the snap ring 422 is clamped to the annular protrusion 131, at this time the second clamping part 410 is clamped to the winding coil 200, and the winding coil 200 cannot rotate around its own axis; the snap ring 422 of the column 421 enters the annular protrusion 131 along the guide surface 132 located on the lower side until the snap ring 422 of the column 421 is in contact with the guide surface 132 located on the upper side, then the snap ring 422 is disengaged from the clamping state, at this time the second clamping part 410 is disengaged from the winding coil 200, and the winding coil 200 can rotate under the action of external force and / or the elastic part 300.

[0060] The outer diameter of the snap ring 422 is smaller than the inner diameter of the second protrusion 130 to ensure that the column 421 and the snap ring 422 can smoothly enter the interior of the second protrusion 130. The outer diameter of the snap ring 422 is larger than the inner diameter of the annular protrusion 131 to ensure the clamping effect of the snap ring 422 and the annular protrusion 131. The snap ring 422 and / or the annular protrusion 131 can use an elastic material with the ability to deform and recover after deformation to ensure the smooth progress of the clamping process of the snap ring 422 and the annular protrusion 131.

[0061] It can be understood that the guide surface 132 is specifically an arc surface or a curved surface. Through the guiding effect of the guide surface 132, the clamping efficiency of the clamping ring 422 and the annular protrusion 131 is improved, and at the same time, the service life of the clamping ring 422 and the annular protrusion 131 can be increased. Accordingly, the end of the column 421 away from the cover 400 is provided with a tapered structure, and the end with the smaller tapered structure is located at the end of the column 421. The tapered structure facilitates the movement of the column 421 and the clamping ring 422 on the guide surface 132.

[0062] The winding coil 200 is an integrated structure, including a rotating part 210, a rope winding part 230 and a connecting part 220 arranged from top to bottom. The connecting part 220 and the second protrusion 130 together form a second accommodating groove 221. The elastic part 300 is located in the second accommodating groove 221 and its two ends are respectively connected to the groove 140 and the connecting part 220; a first latch is provided on the outer periphery of the rotating part 210; and the second latch 410 is provided with a second latch that can engage with the first latch.

[0063] In this embodiment, one of the rotating part 210 and the second latching tooth 410 may be provided with teeth arranged in a circumferential manner, and the other may be provided with teeth arranged in a segmented manner. Through the mutual engagement of the two teeth, the engagement of the rotating part 210 and the second clamping part 410 can be achieved. For example, a plurality of second latching teeth arranged in a segmented manner are provided on the inner side of the circumferential wall of the cover 400. When the second clamping part 410 moves down with the cover 400 to the clamping ring 422 and is engaged with the annular protrusion 131, the second latching tooth of the second clamping part 410 can engage with the first latching tooth arranged in a circumferential manner to achieve the purpose of limiting the rotation of the rotating part 210. It should be noted that the thickness of the first latching tooth and the second latching tooth in the axial direction of the rotating part 210 can be adjusted according to actual conditions to ensure that under a certain downward error, the first latching tooth and the second latching tooth can still engage to achieve the purpose of limiting the rotation of the rotating part 210. The side facing each other of the first latching tooth and the second latching tooth should be set as an arc surface to facilitate the engagement process of the first latching tooth and the second latching tooth.

[0064] In addition, the connecting portion 220 is provided with a limiting piece 222, and the elastic piece 300 can adopt a circular coil spring, and the innermost side of the coil spring is provided with a locking plate that can be snapped into the groove 140, and the outermost side of the coil spring is provided with a limiting groove that can be snapped into the limiting piece 222 to ensure that the elastic piece 300 is stably connected. The type of the elastic piece 300 can also be selected according to actual needs, as long as it can achieve the above purpose.

[0065] In this embodiment, the rope winding portion 230 of the coil 200 is located between the rotating portion 210 and the connecting portion 220. The rope winding portion 230 is provided with a fixing hole 232 for fixing the rope body 231 to prevent the rope body 231 from being pulled out completely. The connecting portion 220 is located between the lower middle part of the second protrusion 130 and the first protrusion 110. The first protrusion 110 is also provided with a rope outlet hole 111. To ensure that the rope body 231 can be pulled out and retracted along the rope outlet hole 111, the distance between the end of the rope outlet hole 111 away from the bottom piece 100 and the bottom piece 100 in the axial direction of the first protrusion 110 is greater than the distance between the end of the coil 200 close to the bottom piece 100 and the bottom piece 100 in the axial direction of the first protrusion 110. Preferably, there are two rope outlet holes 111, and they are symmetrically arranged on the outer periphery of the first protrusion 110.

[0066] Taking into account the deformation effect of the second protrusion 130 during the clamping process of the clamping ring 422 and the annular protrusion 131, the outer periphery of the second protrusion 130 is provided with vertically extending reinforcing ribs 150. The reinforcing ribs 150 are evenly arranged along the outer periphery of the second protrusion 130, and the reinforcing ribs 150 are located between the rotating part 210 and the bottom part 100. At the same time, it satisfies the fact that the rotating part 210 is sleeved on the outer periphery of the top of the second protrusion 130, and the reinforcing ribs 150 reinforce the structure of the second protrusion 130, wherein the side of the reinforcing rib 150 facing away from the second protrusion 130 adopts an arc surface.

[0067] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0068] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A tightening device, characterized in that: include: A bottom member (100) is provided with a first protrusion (110) and a second protrusion (130) on one side, the first protrusion (110) is located on the periphery of the second protrusion (130), so that a first accommodating cavity (120) is formed between the first protrusion (110) and the second protrusion (130), and a guide groove (113) is provided on the periphery of the first protrusion (110); A winding coil (200) is rotatably connected to the second protrusion (130) and located in the first accommodating cavity (120) for winding a rope (231); an elastic member (300) connected to the second protrusion (130) and the winding coil (200), the elastic member (300) having an elastic force so that the winding coil (200) has a tendency to reel in the rope body (231); The cover (400) includes a clamping point (430) adapted to the guide groove (113) to limit the rotation of the cover (400) relative to the base (100), a first clamping member (420) capable of being embedded in the second protrusion (130) to achieve sliding guidance, and a second clamping member (410) capable of being clamped to the winding coil (200) and limiting the rotation of the winding coil (200), wherein the sliding of the cover (400) can cause the second clamping member (410) to be disengaged from the winding coil (200).

2. The tightening device according to claim 1, characterized in that A protrusion (112) is provided on the outer periphery of the first protrusion (110), and the edge of the protrusion (112) facing away from the first protrusion (110) protrudes outward to form a guide groove (113) extending to the bottom piece (100); The clamping point (430) is located on the inner circumferential surface of the cover (400), so that the clamping point (430) moves in the guide groove (113) along the extension direction of the guide groove (113).

3. The tightening device according to claim 1 or 2, characterized in that: An annular convex point (131) is provided in the second protrusion (130), and the annular convex point (131) has a guide surface (132) that is symmetrical in the upper and lower directions; The first clamping member (420) comprises a column (421) and a clamping ring (422) arranged circumferentially of the column (421), wherein the clamping ring (422) is capable of moving along the guide surface (132) to engage with and disengage from the annular protrusion (131); The second protrusion (130) is provided with a groove (140) extending to the bottom piece (100) to avoid deformation of the annular protrusion (131).

4. The tightening device according to claim 3, characterized in that The winding coil (200) is an integrated structure, comprising a rotating portion (210), a rope winding portion (230), and a connecting portion (220) arranged from top to bottom, wherein the connecting portion (220) and the second protrusion (130) are combined to form a second receiving groove (221), and the elastic member (300) is located in the second receiving groove (221) and has two ends connected to the groove (140) and the connecting portion (220), respectively. The outer periphery of the rotating portion (210) is provided with a first latching tooth; The second latch (410) is provided with a second latch tooth capable of engaging with the first latch tooth.

5. The tightening device according to claim 4, characterized in that: The first protrusion (110) is further provided with a rope outlet hole (111), and the distance between the end of the rope outlet hole (111) facing away from the bottom piece (100) and the bottom piece (100) in the axial direction of the first protrusion (110) is greater than the distance between the end of the winding coil (200) close to the bottom piece (100) and the bottom piece (100) in the axial direction of the first protrusion (110).

6. The tightening device according to claim 4, characterized in that The outer diameter of the snap ring (422) is smaller than the inner diameter of the second protrusion (130), and the outer diameter of the snap ring (422) is larger than the inner diameter of the annular protrusion (131).

7. The tightening device according to claim 4, characterized in that The guide surface (132) is specifically a cambered surface or a curved surface.

8. The tightening device according to claim 4, characterized in that An end of the column (421) facing away from the cover (400) is provided with a tapered structure, and the smaller end of the tapered structure is located at the end of the column (421).

9. The tightening device according to claim 4, characterized in that: A vertically extending reinforcing rib (150) is provided on the outer periphery of the second protrusion (130), and the reinforcing rib (150) is located between the rotating portion (210) and the bottom piece (100).

10. The tightening device according to claim 9, characterized in that The side of the reinforcing rib (150) facing away from the second protrusion (130) is a curved surface.

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