Cord Adjustment Dial

Abstract

Disclosed is a cord adjustment dial, including a lower housing and an upper housing, where the upper housing is rotatably mounted on a top of the lower housing, a spool is rotatably connected within the lower housing, a ratchet is fixedly connected within the lower housing, and a pawl that is snap-fitted on the ratchet is fixedly connected within the upper housing; and a pressing cap is slidably connected to a top of the upper housing, and a pressing adjustment mechanism is arranged between the pressing cap and the spool. When the cord is released, the spool of the cord adjustment dial rotates counterclockwise, only the spool and the second circumferential limiting surfaces at a top of the spool rotate, all other components are in a stationary state. Therefore, the cord does not get stuck but can be released quickly.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of dials, and particularly relates to a cord adjustment dial.BACKGROUND

[0002] A dial structure is a component designed to adjust the tightness of an object. It is usually used on objects such as clothing, luggage, and sports equipment. A connected cord or lacing can be tightened or released by turning a dial, so as to achieve a purpose of adjustment.

[0003] Since the existing dial structures have relatively complex internal designs, they can only release a cord or lacing slowly during an adjustment process, and cannot be released rapidly. Otherwise, internal structures of them are easy to get stuck, making the dials inoperable and greatly reducing user experience.SUMMARY

[0004] In order to solve the technical problems in the prior art that the cord or lacing can only be released slowly during adjustment, and rapid adjustment cannot be achieved, the present disclosure provides a cord adjustment dial.

[0005] In order to achieve the foregoing objective, the present disclosure adopts the following technical solution:

[0006] a cord adjustment dial, including a lower housing and an upper housing, where the upper housing is rotatably mounted on a top of the lower housing, a spool is rotatably connected within the lower housing, a ratchet is fixedly connected within the lower housing, and a pawl that is snap-fitted on the ratchet is fixedly connected within the upper housing; and a pressing cap is slidably connected to a top of the upper housing, and a pressing adjustment mechanism is arranged between the pressing cap and the spool.

[0007] Preferably, the pressing adjustment mechanism includes an adjustment cylinder, and the adjustment cylinder is slidably connected within the upper housing; long grooves and short grooves are alternately arranged on an inner circumference of the upper housing; inclined snap-fitting columns are arranged and distributed on a circumference of a side wall of the adjustment cylinder, a bottom of the adjustment cylinder is provided with first circumferential limiting surfaces, and a top of the spool is provided with second circumferential limiting surfaces that cooperate with the first circumferential limiting surfaces; a bottom of the pressing cap is provided with serrated inclined surfaces that cooperate with the inclined snap-fitting columns; and a spring is connected between the spool and the adjustment cylinder.

[0008] Preferably, the first circumferential limiting surfaces and the second circumferential limiting surfaces are both inclined surfaces.

[0009] Preferably, a cord outlet is formed on the lower housing.

[0010] Preferably, an anti-slip sleeve is connected to a fixing rod on a side wall of the upper housing.

[0011] Compared with that prior art, the present disclosure provides a cord adjustment dial, which has the following beneficial effects:

[0012] During the process of releasing the cord, the spool of the cord adjustment dial rotates counterclockwise. Since the second circumferential limiting surfaces are completely disengaged from the first circumferential limiting surfaces, only the spool and the second circumferential limiting surfaces at the top of the spool rotate, all other components are in a stationary state. Therefore, the cord does not get stuck but can be quickly released, improving the user experience.BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a first structural schematic diagram of a cord adjustment dial according to the present disclosure.

[0014] FIG. 2 is a first exploded view of a cord adjustment dial according to the present disclosure.

[0015] FIG. 3 is a second exploded view of a cord adjustment dial according to the present disclosure.

[0016] FIG. 4 is a structural schematic diagram of first circumferential limiting surfaces of a cord adjustment dial according to the present disclosure.

[0017] FIG. 5 is a structural schematic diagram of a serrated inclined surface of a cord adjustment dial according to the present disclosure.

[0018] FIG. 6 is a sectional view of a cord adjustment dial according to the present disclosure.

[0019] FIG. 7 is a structural schematic diagram of a pressing cap of a cord adjustment dial according to the present disclosure.

[0020] FIG. 8 is a structural schematic diagram of an upper housing of a cord adjustment dial according to the present disclosure.

[0021] Reference numerals in the accompanying drawings: 1. lower housing; 101. upper housing; 102. anti-slip sleeve; 2. spool; 201. cord outlet; 3. ratchet; 301. pawl; 4. pressing cap; 401. long groove; 402. short groove; 403. serrated inclined surface; 5. adjustment cylinder; 501. inclined snap-fitting column; 502. first circumferential limiting surface; 6. second circumferential limiting surface; and 7. spring.DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present disclosure are described below clearly and comprehensively in conjunction with the accompanying drawings in the embodiments of the present disclosure. It is obvious that the embodiments described are merely a part of, not all of, embodiments of the present disclosure.

[0023] In the description of the present disclosure, it is to be understood that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inner”, “outer”, etc. indicate azimuthal or positional relations on the basis of those shown in the drawings only for ease of description of the present disclosure and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation and be constructed and operative in a particular orientation, and thus may not be construed as a limitation on the present disclosure.Embodiment

[0024] With reference to FIGS. 1-8, a cord adjustment dial includes a lower housing 1 and an upper housing 101, the upper housing 101 is rotatably mounted on a top of the lower housing 1, the upper housing 101 is snap-fitted on the top of the lower housing 1, such that the upper housing can only rotate around the lower housing 1, and a spool 2 is rotatably connected within the lower housing 1, as shown in FIG. 6. The spool 2 can only rotate on its own axis, a cord is wound around the spool 2 clockwise, with one end extending outward; a ratchet 3 is fixedly connected within the lower housing 1, and a pawl 301 snap-fitted on the ratchet 3 is fixedly connected within the upper housing 101; when the pawl 301 rotates clockwise, it can be automatically disengaged from the ratchet 3 due to its own elasticity; and when the pawl 301 rotates counterclockwise, the pawl 301 and the ratchet 3 are directly stuck and cannot rotate.

[0025] A pressing cap 4 is slidably connected to a top of the upper housing 101, and a protrusion is formed at a bottom of the pressing cap 4, such that the pressing cap can only slide in the upper housing 101 and cannot be detached from the top; and a pressing adjustment mechanism is arranged between the pressing cap 4 and the spool 2, and the pressing adjustment mechanism is used to adjust the release or tightening of the cord.

[0026] The pressing adjustment mechanism includes an adjustment cylinder 5, the adjustment cylinder 5 is slidably connected within the upper housing 101; long grooves 401 and short grooves 402 are alternately arranged on an inner circumference of the upper housing 101; and inclined snap-fitting columns 501 are arranged and distributed on a circumference of a side wall of the adjustment cylinder 5, and the inclined snap-fitting columns 501 can be snap-fitted into the long grooves 401 or the short grooves 402.

[0027] A number of the inclined snap-fitting columns 501 is 4-10, preferably 6, and all of them are fixed on the side wall of the adjustment cylinder 5.

[0028] A number of the long grooves 401 and the short grooves 402 is the same as that of the inclined snap-fitting columns 501.

[0029] A bottom of the adjustment cylinder 5 is provided with first circumferential limiting surfaces 502, and a top of the spool 2 is provided with second circumferential limiting surfaces 6 that cooperate with the first circumferential limiting surfaces, and the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 can fit together or be disengaged from each other.

[0030] The second circumferential limiting surfaces 6 are fixed on the top of the spool 2.

[0031] As shown in FIG. 4, a number of the first circumferential limiting surfaces 502 is the same as a number of the second circumferential limiting surfaces 6, and both of them are circumferentially distributed; and the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 are interlocked, that is, the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 can fit together.

[0032] A bottom of the pressing cap 4 is provided with serrated inclined surfaces 403 that cooperate with the inclined snap-fitting columns 501; and when the pressing cap 4 is pressed down, the serrated inclined surfaces 403 can be in contact with inclined surfaces of the inclined snap-fitting columns 501 below.

[0033] The serrated inclined surfaces 403 are also circumferentially distributed.

[0034] A spring 7 is connected between the spool 2 and the adjustment cylinder 5.

[0035] A number of the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 is also the same as a number of inclined snap-fitting columns 501.

[0036] That is, the numbers of the long grooves 401, the short grooves 402, the inclined snap-fitting columns 501, the first circumferential limiting surfaces502, and the second circumferential limiting surfaces 6 are all the same.

[0037] During operation, when the inclined snap-fitting columns 501 are snap-fitted in the long grooves 401, as shown in FIGS. 6 and 7, the adjustment cylinder 5 causes the first circumferential limiting surfaces 502 to be completely disengaged from the second circumferential limiting surfaces 6 under the action of the spring 7, that is, a lowest point of the first circumferential limiting surfaces 502 is higher than a highest point of the second circumferential limiting surfaces 6, such that they can be completely disengaged and lose a limiting function.

[0038] After then the cord is pulled for release, the spool 2 rotates counterclockwise during the release to pull out the wound cord.

[0039] During the process of releasing the cord, the spool 2 rotates counterclockwise. Since the second circumferential limiting surfaces 6 are completely disengaged from the first circumferential limiting surfaces 502, only the spool 2 and the second circumferential limiting surfaces 6 at the top of the spool 2 rotate, all other components are in a stationary state. Therefore, jamming will not occur, and the cord can be quickly released, improving the user experience.

[0040] When the cord needs to be tightened, the pressing cap 4 is pressed down, the serrated inclined surfaces 403 comes into contact with the inclined surfaces of the inclined snap-fitting columns 501; as the pressing cap continues to be pressed down, the inclined snap-fitting columns 501 are disengaged from the long groove 401, the adjustment cylinder 5 rotates on its own axis to below the short grooves 402 under the interaction between the serrated inclined surfaces 403 and the inclined surfaces of the inclined snap-fitting columns 501, in which case, after the pressing cap 4 is released, the adjustment cylinder 5 resets upward under the action of the spring 7, and the inclined snap-fitting columns 501 are snap-fitted in the short grooves 402. Since the short grooves 402 are relatively short, the adjustment cylinder 5 does not return to its original height, the first circumferential limiting surfaces 502 are not completely disengaged from the second circumferential limiting surfaces 6, but are still snap-fitted together.

[0041] The upper housing 101 is then rotated clockwise, the upper housing 101 is snap-fitted on the second circumferential limiting surfaces 6 through the first circumferential limiting surfaces 502 at the bottom of the adjustment cylinder 5 and drives the spool 2 to rotate, and the spool 2 rotates clockwise, such that the cord is tightened.

[0042] When the upper housing 101 rotates clockwise, the pawl 301 also rotates clockwise simultaneously, the pawl 301 is automatically disengaged from the ratchet 3; and when the rotation stops, the pawl 301 can effectively prevents the upper housing 101 from reversing, thereby preventing the cord from loosening.

[0043] When the cord needs to be released again, the pressing cap 4 is pressed down again, the adjustment cylinder 5 continues to rotate, and the inclined snap-fitting columns 501 are then snap-fitted in the long grooves 401.

[0044] The first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 are both inclined surfaces, the design of the inclined surfaces further enhances the stability of the snap-fitting between the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6.

[0045] As shown in FIGS. 1 and 3, a cord outlet 201 is formed on the lower housing 1, and one end of the cord is led out through the cord outlet 201 and extends to an outside.

[0046] An anti-slip sleeve 102 is connected to a fixing rod on a side wall of the upper housing 101, and the design of the anti-slip sleeve 102 is conducive to avoiding hand slipping when the upper housing 101 is rotated to tighten the cord, thereby improving the user experience.

[0047] The foregoing descriptions are merely preferred specific implementations of the present disclosure, and are not intended to limit the protection scope of the present disclosure. Any equivalent replacements or changes made by a person skilled in the art according to the technical solution of the present disclosure and the inventive concepts thereof within the technical scope disclosed in the present disclosure shall fall within the protection scope of the present disclosure.

Examples

embodiment

[0024]With reference to FIGS. 1-8, a cord adjustment dial includes a lower housing 1 and an upper housing 101, the upper housing 101 is rotatably mounted on a top of the lower housing 1, the upper housing 101 is snap-fitted on the top of the lower housing 1, such that the upper housing can only rotate around the lower housing 1, and a spool 2 is rotatably connected within the lower housing 1, as shown in FIG. 6. The spool 2 can only rotate on its own axis, a cord is wound around the spool 2 clockwise, with one end extending outward; a ratchet 3 is fixedly connected within the lower housing 1, and a pawl 301 snap-fitted on the ratchet 3 is fixedly connected within the upper housing 101; when the pawl 301 rotates clockwise, it can be automatically disengaged from the ratchet 3 due to its own elasticity; and when the pawl 301 rotates counterclockwise, the pawl 301 and the ratchet 3 are directly stuck and cannot rotate.

[0025]A pressing cap 4 is slidably connected to a top of the upper h...

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of dials, and particularly relates to a cord adjustment dial.BACKGROUND

[0002] A dial structure is a component designed to adjust the tightness of an object. It is usually used on objects such as clothing, luggage, and sports equipment. A connected cord or lacing can be tightened or released by turning a dial, so as to achieve a purpose of adjustment.

[0003] Since the existing dial structures have relatively complex internal designs, they can only release a cord or lacing slowly during an adjustment process, and cannot be released rapidly. Otherwise, internal structures of them are easy to get stuck, making the dials inoperable and greatly reducing user experience.SUMMARY

[0004] In order to solve the technical problems in the prior art that the cord or lacing can only be released slowly during adjustment, and rapid adjustment cannot be achieved, the present disclosure provides a cord adjustment dial.

[0005] In order to achieve the foregoing objective, the present disclosure adopts the following technical solution:

[0006] a cord adjustment dial, including a lower housing and an upper housing, where the upper housing is rotatably mounted on a top of the lower housing, a spool is rotatably connected within the lower housing, a ratchet is fixedly connected within the lower housing, and a pawl that is snap-fitted on the ratchet is fixedly connected within the upper housing; and a pressing cap is slidably connected to a top of the upper housing, and a pressing adjustment mechanism is arranged between the pressing cap and the spool.

[0007] Preferably, the pressing adjustment mechanism includes an adjustment cylinder, and the adjustment cylinder is slidably connected within the upper housing; long grooves and short grooves are alternately arranged on an inner circumference of the upper housing; inclined snap-fitting columns are arranged and distributed on a circumference of a side wall of the adjustment cylinder, a bottom of the adjustment cylinder is provided with first circumferential limiting surfaces, and a top of the spool is provided with second circumferential limiting surfaces that cooperate with the first circumferential limiting surfaces; a bottom of the pressing cap is provided with serrated inclined surfaces that cooperate with the inclined snap-fitting columns; and a spring is connected between the spool and the adjustment cylinder.

[0008] Preferably, the first circumferential limiting surfaces and the second circumferential limiting surfaces are both inclined surfaces.

[0009] Preferably, a cord outlet is formed on the lower housing.

[0010] Preferably, an anti-slip sleeve is connected to a fixing rod on a side wall of the upper housing.

[0011] Compared with that prior art, the present disclosure provides a cord adjustment dial, which has the following beneficial effects:

[0012] During the process of releasing the cord, the spool of the cord adjustment dial rotates counterclockwise. Since the second circumferential limiting surfaces are completely disengaged from the first circumferential limiting surfaces, only the spool and the second circumferential limiting surfaces at the top of the spool rotate, all other components are in a stationary state. Therefore, the cord does not get stuck but can be quickly released, improving the user experience.BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a first structural schematic diagram of a cord adjustment dial according to the present disclosure.

[0014] FIG. 2 is a first exploded view of a cord adjustment dial according to the present disclosure.

[0015] FIG. 3 is a second exploded view of a cord adjustment dial according to the present disclosure.

[0016] FIG. 4 is a structural schematic diagram of first circumferential limiting surfaces of a cord adjustment dial according to the present disclosure.

[0017] FIG. 5 is a structural schematic diagram of a serrated inclined surface of a cord adjustment dial according to the present disclosure.

[0018] FIG. 6 is a sectional view of a cord adjustment dial according to the present disclosure.

[0019] FIG. 7 is a structural schematic diagram of a pressing cap of a cord adjustment dial according to the present disclosure.

[0020] FIG. 8 is a structural schematic diagram of an upper housing of a cord adjustment dial according to the present disclosure.

[0021] Reference numerals in the accompanying drawings: 1. lower housing; 101. upper housing; 102. anti-slip sleeve; 2. spool; 201. cord outlet; 3. ratchet; 301. pawl; 4. pressing cap; 401. long groove; 402. short groove; 403. serrated inclined surface; 5. adjustment cylinder; 501. inclined snap-fitting column; 502. first circumferential limiting surface; 6. second circumferential limiting surface; and 7. spring.DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present disclosure are described below clearly and comprehensively in conjunction with the accompanying drawings in the embodiments of the present disclosure. It is obvious that the embodiments described are merely a part of, not all of, embodiments of the present disclosure.

[0023] In the description of the present disclosure, it is to be understood that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inner”, “outer”, etc. indicate azimuthal or positional relations on the basis of those shown in the drawings only for ease of description of the present disclosure and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation and be constructed and operative in a particular orientation, and thus may not be construed as a limitation on the present disclosure.Embodiment

[0024] With reference to FIGS. 1-8, a cord adjustment dial includes a lower housing 1 and an upper housing 101, the upper housing 101 is rotatably mounted on a top of the lower housing 1, the upper housing 101 is snap-fitted on the top of the lower housing 1, such that the upper housing can only rotate around the lower housing 1, and a spool 2 is rotatably connected within the lower housing 1, as shown in FIG. 6. The spool 2 can only rotate on its own axis, a cord is wound around the spool 2 clockwise, with one end extending outward; a ratchet 3 is fixedly connected within the lower housing 1, and a pawl 301 snap-fitted on the ratchet 3 is fixedly connected within the upper housing 101; when the pawl 301 rotates clockwise, it can be automatically disengaged from the ratchet 3 due to its own elasticity; and when the pawl 301 rotates counterclockwise, the pawl 301 and the ratchet 3 are directly stuck and cannot rotate.

[0025] A pressing cap 4 is slidably connected to a top of the upper housing 101, and a protrusion is formed at a bottom of the pressing cap 4, such that the pressing cap can only slide in the upper housing 101 and cannot be detached from the top; and a pressing adjustment mechanism is arranged between the pressing cap 4 and the spool 2, and the pressing adjustment mechanism is used to adjust the release or tightening of the cord.

[0026] The pressing adjustment mechanism includes an adjustment cylinder 5, the adjustment cylinder 5 is slidably connected within the upper housing 101; long grooves 401 and short grooves 402 are alternately arranged on an inner circumference of the upper housing 101; and inclined snap-fitting columns 501 are arranged and distributed on a circumference of a side wall of the adjustment cylinder 5, and the inclined snap-fitting columns 501 can be snap-fitted into the long grooves 401 or the short grooves 402.

[0027] A number of the inclined snap-fitting columns 501 is 4-10, preferably 6, and all of them are fixed on the side wall of the adjustment cylinder 5.

[0028] A number of the long grooves 401 and the short grooves 402 is the same as that of the inclined snap-fitting columns 501.

[0029] A bottom of the adjustment cylinder 5 is provided with first circumferential limiting surfaces 502, and a top of the spool 2 is provided with second circumferential limiting surfaces 6 that cooperate with the first circumferential limiting surfaces, and the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 can fit together or be disengaged from each other.

[0030] The second circumferential limiting surfaces 6 are fixed on the top of the spool 2.

[0031] As shown in FIG. 4, a number of the first circumferential limiting surfaces 502 is the same as a number of the second circumferential limiting surfaces 6, and both of them are circumferentially distributed; and the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 are interlocked, that is, the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 can fit together.

[0032] A bottom of the pressing cap 4 is provided with serrated inclined surfaces 403 that cooperate with the inclined snap-fitting columns 501; and when the pressing cap 4 is pressed down, the serrated inclined surfaces 403 can be in contact with inclined surfaces of the inclined snap-fitting columns 501 below.

[0033] The serrated inclined surfaces 403 are also circumferentially distributed.

[0034] A spring 7 is connected between the spool 2 and the adjustment cylinder 5.

[0035] A number of the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 is also the same as a number of inclined snap-fitting columns 501.

[0036] That is, the numbers of the long grooves 401, the short grooves 402, the inclined snap-fitting columns 501, the first circumferential limiting surfaces502, and the second circumferential limiting surfaces 6 are all the same.

[0037] During operation, when the inclined snap-fitting columns 501 are snap-fitted in the long grooves 401, as shown in FIGS. 6 and 7, the adjustment cylinder 5 causes the first circumferential limiting surfaces 502 to be completely disengaged from the second circumferential limiting surfaces 6 under the action of the spring 7, that is, a lowest point of the first circumferential limiting surfaces 502 is higher than a highest point of the second circumferential limiting surfaces 6, such that they can be completely disengaged and lose a limiting function.

[0038] After then the cord is pulled for release, the spool 2 rotates counterclockwise during the release to pull out the wound cord.

[0039] During the process of releasing the cord, the spool 2 rotates counterclockwise. Since the second circumferential limiting surfaces 6 are completely disengaged from the first circumferential limiting surfaces 502, only the spool 2 and the second circumferential limiting surfaces 6 at the top of the spool 2 rotate, all other components are in a stationary state. Therefore, jamming will not occur, and the cord can be quickly released, improving the user experience.

[0040] When the cord needs to be tightened, the pressing cap 4 is pressed down, the serrated inclined surfaces 403 comes into contact with the inclined surfaces of the inclined snap-fitting columns 501; as the pressing cap continues to be pressed down, the inclined snap-fitting columns 501 are disengaged from the long groove 401, the adjustment cylinder 5 rotates on its own axis to below the short grooves 402 under the interaction between the serrated inclined surfaces 403 and the inclined surfaces of the inclined snap-fitting columns 501, in which case, after the pressing cap 4 is released, the adjustment cylinder 5 resets upward under the action of the spring 7, and the inclined snap-fitting columns 501 are snap-fitted in the short grooves 402. Since the short grooves 402 are relatively short, the adjustment cylinder 5 does not return to its original height, the first circumferential limiting surfaces 502 are not completely disengaged from the second circumferential limiting surfaces 6, but are still snap-fitted together.

[0041] The upper housing 101 is then rotated clockwise, the upper housing 101 is snap-fitted on the second circumferential limiting surfaces 6 through the first circumferential limiting surfaces 502 at the bottom of the adjustment cylinder 5 and drives the spool 2 to rotate, and the spool 2 rotates clockwise, such that the cord is tightened.

[0042] When the upper housing 101 rotates clockwise, the pawl 301 also rotates clockwise simultaneously, the pawl 301 is automatically disengaged from the ratchet 3; and when the rotation stops, the pawl 301 can effectively prevents the upper housing 101 from reversing, thereby preventing the cord from loosening.

[0043] When the cord needs to be released again, the pressing cap 4 is pressed down again, the adjustment cylinder 5 continues to rotate, and the inclined snap-fitting columns 501 are then snap-fitted in the long grooves 401.

[0044] The first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6 are both inclined surfaces, the design of the inclined surfaces further enhances the stability of the snap-fitting between the first circumferential limiting surfaces 502 and the second circumferential limiting surfaces 6.

[0045] As shown in FIGS. 1 and 3, a cord outlet 201 is formed on the lower housing 1, and one end of the cord is led out through the cord outlet 201 and extends to an outside.

[0046] An anti-slip sleeve 102 is connected to a fixing rod on a side wall of the upper housing 101, and the design of the anti-slip sleeve 102 is conducive to avoiding hand slipping when the upper housing 101 is rotated to tighten the cord, thereby improving the user experience.

[0047] The foregoing descriptions are merely preferred specific implementations of the present disclosure, and are not intended to limit the protection scope of the present disclosure. Any equivalent replacements or changes made by a person skilled in the art according to the technical solution of the present disclosure and the inventive concepts thereof within the technical scope disclosed in the present disclosure shall fall within the protection scope of the present disclosure.

Examples

embodiment

[0024]With reference to FIGS. 1-8, a cord adjustment dial includes a lower housing 1 and an upper housing 101, the upper housing 101 is rotatably mounted on a top of the lower housing 1, the upper housing 101 is snap-fitted on the top of the lower housing 1, such that the upper housing can only rotate around the lower housing 1, and a spool 2 is rotatably connected within the lower housing 1, as shown in FIG. 6. The spool 2 can only rotate on its own axis, a cord is wound around the spool 2 clockwise, with one end extending outward; a ratchet 3 is fixedly connected within the lower housing 1, and a pawl 301 snap-fitted on the ratchet 3 is fixedly connected within the upper housing 101; when the pawl 301 rotates clockwise, it can be automatically disengaged from the ratchet 3 due to its own elasticity; and when the pawl 301 rotates counterclockwise, the pawl 301 and the ratchet 3 are directly stuck and cannot rotate.

[0025]A pressing cap 4 is slidably connected to a top of the upper h...

Claims

1. A cord adjustment dial, comprising a lower housing and an upper housing, wherein the upper housing is rotatably mounted on a top of the lower housing, and a spool is rotatably connected within the lower housing; whereina ratchet is fixedly connected within the lower housing, and a pawl that is snap-fitted on the ratchet is fixedly connected within the upper housing; anda pressing cap is slidably connected to a top of the upper housing, and a pressing adjustment mechanism is arranged between the pressing cap and the spool.

2. The cord adjustment dial according to claim 1, wherein the pressing adjustment mechanism comprises an adjustment cylinder, and the adjustment cylinder is slidably connected within the upper housing;long grooves and short grooves are alternately arranged on an inner circumference of the upper housing;inclined snap-fitting columns are arranged and distributed on a circumference of a side wall of the adjustment cylinder;a bottom of the adjustment cylinder is provided with first circumferential limiting surfaces, and a top of the spool is provided with second circumferential limiting surfaces that cooperate with the first circumferential limiting surfaces;a bottom of the pressing cap is provided with serrated inclined surfaces that cooperate with the inclined snap-fitting columns; anda spring is connected between the spool and the adjustment cylinder.

3. The cord adjustment dial according to claim 2, wherein the first circumferential limiting surfaces and the second circumferential limiting surfaces are both inclined surfaces.

4. The cord adjustment dial according to claim 1, wherein a cord outlet is formed on the lower housing.

5. The cord adjustment dial according to claim 1, wherein an anti-slip sleeve is connected to a fixing rod on a side wall of the upper housing.

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