Belt adjustment knob

Abstract

Provided is a belt adjustment knob that does not cause a locking phenomenon, can quickly release the belt, and can improve the user experience. 【Solution means】The belt adjustment knob includes a lower housing 1 inside which a take-up drum 2 is rotatably connected, and an upper housing 101 that rotates on the top of the lower housing. A ratchet tooth 3 is fixedly connected inside the lower housing, and a pawl 301 engaged with the ratchet tooth is fixedly connected inside the upper housing. A pressing cap 4 is slidably connected to the top of the upper housing, and a pressing adjustment means is provided between the pressing cap and the take-up drum. During the release of the belt, the take-up drum rotates counterclockwise. Since the second circumferential stopper surface 6 is completely separated from the first circumferential stopper surface, only the take-up drum and the second circumferential stopper surface at the top of the take-up drum rotate, and all other parts do not move.

Description

Technical Field

[0001] The present invention relates to the field of knob technology, and particularly to a belt adjustment knob.

Background Art

[0002] The knob structure is a component designed to adjust the degree of tightening of an object, and is usually applied to objects such as clothing, luggage, and sports equipment. By rotating the knob, the connected rope or belt can be tightened or released to achieve tightening and release and reach the purpose of adjustment.

[0003] The conventional knob structure has a complex internal structure design during operation. During the adjustment process, the belt can only be slowly released, and rapid release cannot be achieved. If the release is too fast, it is easy to cause the lock of the internal structure and make it impossible to work directly, resulting in a significant reduction in the user experience.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The purpose of the present invention is to propose a belt adjustment knob to solve the technical problem of the prior art that in the adjustment process, the belt can only be slowly released and rapid adjustment cannot be achieved.

Means for Solving the Problems

[0005] To achieve the above object, the present invention adopts the following technical solution.

[0006] A belt adjustment knob including a lower housing inside which a winding drum is rotatably connected, and an upper housing that rotates on the top of the lower housing. A ratchet tooth is fixedly connected inside the lower housing, a pawl engaged with the ratchet tooth is fixedly connected inside the upper housing, a pressing cap is slidably connected to the top of the upper housing, and a pressing adjustment means is provided between the pressing cap and the winding drum.

[0007] Preferably, the pressing adjustment means includes an adjustment drum slidably connected in the upper housing. Long concave grooves and short concave grooves are alternately provided on the inner circumference of the upper housing. Inclined surface engaging columns are circumferentially distributed on the side wall of the adjustment drum. A first circumferential stopper surface is provided at the bottom of the adjustment drum. A second circumferential stopper surface that engages with each other is provided at the top of the take-up drum. A serrated inclined surface that engages with the inclined surface engaging columns is provided at the bottom of the pressing cap. A spring is connected between the take-up drum and the adjustment drum.

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

[0009] Preferably, a belt outlet is provided on the lower housing.

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

Advantages of the Invention

[0011] Compared with the prior art, the present invention provides a belt adjustment knob and has the following beneficial effects.

[0012] In this belt adjustment knob, during the release of the belt, the take-up drum rotates counterclockwise. Since the second circumferential stopper surface is completely separated from the first circumferential stopper surface, only the take-up drum and the second circumferential stopper surface at the top of the take-up drum rotate, and all other parts are in a non-moving state, so the locking phenomenon does not occur, the belt can be quickly released, and the user experience can be improved.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying out the Invention

[0014] Hereinafter, using the drawings of the embodiments of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0015] In the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for explaining the present invention and simplifying the description, and does not indicate or imply that the device or element pointed to must be configured and operated in a specific orientation. It is necessary to understand that it cannot be understood as a limitation to the present invention.

[0016] Example: Referring to FIGS. 1 to 8, the belt adjustment knob includes a lower housing 1 and an upper housing 101. The upper housing 101 rotates on the top of the lower housing 1 and is fastened to the top of the lower housing 1 so that it can only rotate around the lower housing 1. A take-up drum 2 is rotatably connected inside the lower housing 1. As shown in FIG. 6, the take-up drum 2 can only rotate on its own axis. The belt is wound around the take-up drum 2 in a clockwise direction, and one end extends externally. A ratchet tooth 3 is fixedly connected inside the lower housing 1, and a pawl 301 engaged with the ratchet tooth 3 is fixedly connected inside the upper housing 101. When the pawl 301 rotates clockwise, it can automatically separate from the ratchet tooth 3 due to its own elasticity. When the pawl 301 rotates counterclockwise, the space between the pawl 301 and the ratchet tooth 3 is directly locked and cannot rotate.

[0017] A pressing cap 4 is slidably connected to the top of the upper housing 101, and a protrusion is provided at the bottom of the pressing cap 4 so that the pressing cap 4 can only slide inside the upper housing 101 and cannot be detached from the top. A pressing adjustment means for adjusting the release or tightening of the belt is provided between the pressing cap 4 and the take-up drum 2.

[0018] The pressing adjustment means includes an adjustment drum 5 slidably connected inside the upper housing 101. Long concave grooves 401 and short concave grooves 402 are alternately provided on the inner circumference of the upper housing 101. Slant engaging columns 501 are circumferentially distributed on the side wall of the adjustment drum 5, and the slant engaging columns 501 can engage inside the long concave grooves 401 or the short concave grooves 402.

[0019] The number of the slant engaging columns 501 is 4 to 10, preferably 6, and all are fixed to the side wall of the adjustment drum 5.

[0020] The number of the long concave grooves 401 and the short concave grooves 402 is the same as the number of the slant engaging columns 501.

[0021] At the bottom of the adjustment drum 5, a first circumferential stopper surface 502 is provided. At the top of the take-up drum 2, a second circumferential stopper surface 6 that engages with each other is provided. The space between the first circumferential stopper surface 502 and the second circumferential stopper surface 6 may be in close contact or separated.

[0022] The second circumferential stopper surface 6 is fixed to the top of the take-up drum 2.

[0023] As shown in FIG. 4, the number of the first circumferential stopper surface 502 and the second circumferential stopper surface 6 is the same, and both are circumferentially distributed. The first circumferential stopper surface 502 and the second circumferential stopper surface 6 intersect with each other, that is, the first circumferential stopper surface 502 and the second circumferential stopper surface 6 can be in close contact.

[0024] At the bottom of the pressing cap 4, a serrated inclined surface 403 that engages with the inclined surface engaging post 501 is provided. When pressing the pressing cap 4, the serrated inclined surface 403 can contact the inclined surface of the lower inclined surface engaging post 501.

[0025] The serrated inclined surfaces 403 are also circumferentially distributed.

[0026] A spring 7 is connected between the take-up drum 2 and the adjustment drum 5.

[0027] The number of the first circumferential stopper surface 502 and the second circumferential stopper surface 6 is the same as the number of the inclined surface engaging posts 501.

[0028] That is, the number of the long concave groove 401, the short concave groove 402, the inclined surface engaging post 501, the first circumferential stopper surface 502, and the second circumferential stopper surface 6 is the same.

[0029] As shown in FIGS. 6 and 7, during operation, when the inclined surface engaging post 501 is engaged in the long concave groove 401, for the adjustment drum 5, under the action of the spring 7, the first circumferential stopper surface 502 is completely separated from the second circumferential stopper surface 6, that is, the lowest point of the first circumferential stopper surface 502 is higher than the highest point of the second circumferential stopper surface 6, and they are completely separated, losing the function of the stopper.

[0030] At this time, pull the belt and release it. While releasing, rotate the take-up drum 2 counterclockwise to pull out the wound belt.

[0031] While the belt is being released, the take-up drum 2 rotates counterclockwise. Since the second circumferential stopper surface 6 is completely separated from the first circumferential stopper surface 502, only the take-up drum 2 and the second circumferential stopper surface 6 at the top of the take-up drum 2 rotate, and all other parts are in a non-moving state, so no locking phenomenon occurs, and the belt can be quickly released, improving the user experience.

[0032] When the belt needs to be tightened, press the pressing cap 4 to bring the serrated inclined surface 403 into contact with the inclined surface of the inclined surface engaging column 501 and continue to press downward. After the inclined surface engaging column 501 disengages from the long concave groove 401, due to the interaction between the serrated inclined surface 403 and the inclined surface of the inclined surface engaging column 501, the adjusting drum 5 rotates on its own and rotates downward below the short concave groove 402. At this time, after loosening the pressing cap 4, the adjusting drum 5 returns upward under the action of the spring 7, and the inclined surface engaging column 501 is engaged in the short concave groove 402. Since the length of the short concave groove 402 is short, the adjusting drum 5 does not return to its original height. At this time, the first circumferential stopper surface 502 is either completely separated from or engaged with the second circumferential stopper surface 6.

[0033] Then rotate the upper housing 101 clockwise. The upper housing 101 drives the rotation of the take-up drum 2 by engaging the first circumferential stopper surface 502 at the bottom of the adjusting drum 5 with the second circumferential stopper surface 6, causing the take-up drum 2 to rotate clockwise to realize belt tightening.

[0034] When the upper housing 101 rotates clockwise, the pawl 301 also rotates synchronously clockwise, and the pawl 301 and the ratchet teeth 3 are automatically separated. When the rotation stops, the pawl 301 effectively prevents the belt from loosening due to the reverse rotation of the upper housing 101.

[0035] If it is necessary to release the belt again, press the pressing cap 4 again. The adjusting drum 5 continues to rotate, and the inclined surface engaging post 501 is engaged in the long concave groove 401.

[0036] Both the first circumferential stopper surface 502 and the second circumferential stopper surface 6 are inclined surfaces. Due to the design of the inclined surfaces, the stability of the engagement between the first circumferential stopper surface 502 and the second circumferential stopper surface 6 is further improved.

[0037] As shown in FIGS. 1 and 3, a belt outlet 201 is provided on the lower housing 1. One end of the belt is drawn out through the belt outlet 201 and extends to the outside.

[0038] A non-slip sleeve 102 is connected to the side wall fixing rod of the upper housing 101. Due to the design of the non-slip sleeve 102, when the upper housing 101 is rotated and tightened, operation errors are avoided and the user experience is improved.

[0039] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art, within the technical scope disclosed by the present invention, equivalent substitutions or modifications made based on the technical solution and the inventive concept of the present invention should be included within the protection scope of the present invention.

Description of Reference Numerals

[0040] 1. Lower housing 101. Upper housing 102. Non-slip sleeve 2. Take-up drum 201. Belt outlet 3. Ratchet teeth 301. Pawl 4. Pressing cap 401. Long concave groove 402. Short concave groove 403. Serrated inclined surface 5. Adjusting drum 501. Inclined surface engaging post 502. First circumferential stopper surface 6. Second circumferential stopper surface 7. Spring

Claims

1. A belt adjustment knob including a lower housing (1) inside which a take-up drum (2) is rotatably connected, and an upper housing (101) that rotates on top of the lower housing (1), wherein a ratchet tooth (3) is fixedly connected inside the lower housing (1), and a pawl (301) engaged with the ratchet tooth (3) is fixedly connected inside the upper housing (101), wherein a pressing cap (4) is slidably connected to the top of the upper housing (101), and a pressing adjustment means is provided between the pressing cap (4) and the take-up drum (2). The belt adjustment knob is characterized by this.

2. The pressing adjustment means includes an adjustment drum (5) slidably connected inside the upper housing (101), wherein long concave grooves (401) and short concave grooves (402) are alternately provided on the inner circumference of the upper housing (101), wherein inclined surface engaging columns (501) are circumferentially distributed on the side wall of the adjustment drum (5), wherein a first circumferential stopper surface (502) is provided at the bottom of the adjustment drum (5), and a second circumferential stopper surface (6) that engages with each other is provided at the top of the take-up drum (2), wherein a sawtooth inclined surface (403) that engages with the inclined surface engaging column (501) is provided at the bottom of the pressing cap (4), wherein a spring (7) is connected between the take-up drum (2) and the adjustment drum (5). The belt adjustment knob according to claim 1 is characterized by this.

3. The belt adjustment knob according to claim 2, wherein both the first circumferential stopper surface (502) and the second circumferential stopper surface (6) are inclined surfaces.

4. The belt adjustment knob according to claim 1, wherein a belt outlet (201) is provided on the lower housing (1).

5. The belt adjustment knob according to claim 1, wherein a non-slip sleeve (102) is connected to the side wall fixing rod of the upper housing (101).

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