Fitness waist support belt with self-adaptive adjustment and self-locking functions

Abstract

The fitness waist support belt comprises a belt buckle and a belt body, the belt buckle comprises a shell, a shifting device and a non-return device, a lower mounting groove is formed in the bottom of the shell, extending plates which are oppositely arranged left and right are formed on one side of the lower mounting groove, a belt passing channel is formed between the two extending plates, and the belt passing channel is communicated with the shell. The extending plate is provided with a sliding way, the sliding way is communicated with the belt passing channel, the top of the shell is provided with a front installation groove and a rear installation groove, the front installation groove and the rear installation groove are opposite to and communicated with the belt passing channel, and the shifting device and the backstop are hinged into the front installation groove and the rear installation groove respectively and extend to the belt passing channel. One end of the waistband body is fixed in the lower mounting groove, ratchets are sequentially formed on the upper surface of the waistband body, the shifting device is used for grabbing the ratchets, and the non-return device is used for being matched with the non-return surfaces of the ratchets. According to the technical scheme, the self-adaptive adjusting function is achieved, the size adjusting process is simple, adjustment is convenient, rapid adjustment can be achieved, and the tightening effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and more specifically, it is a fitness lumbar support belt with self-adaptive adjustment and self-locking function. Background Art

[0002] A fitness lumbar support belt is a piece of equipment used to protect the waist and assist core force during fitness activities. During heavy weight strength training movements such as squats, deadlifts, bench presses, and shoulder presses, due to the large pressure on the core and waist, wearing a lumbar support belt can protect the waist, improve training performance, stabilize the body, and reduce the burden on the waist.

[0003] Chinese Patent with Publication No. CN205728243U discloses a fitness belt and its fixing buckle. It includes a belt body and a fixing buckle. The belt body is in a strip structure. Locking buckle fixing holes and belt connection holes are respectively arranged in the length direction at both ends of the belt body. The locking buckle fixing holes are single circular holes arranged in sequence in the length direction, and the belt connection holes are double-row circular holes arranged in sequence in the length direction. The fixing buckle is fixed to one end of the belt body through the locking buckle fixing hole. The fixing buckle includes a fixing seat fixedly connected to one end of the belt body and a buckle body movably connected to the belt body. The buckle body is connected to the belt connection hole through a connecting block.

[0004] When the locking buckle fixing hole is fixed to the fixing seat and the connecting block is connected to the belt connection hole, the fixing buckle connects the two ends of the belt body end to end to form a ring structure, thereby maintaining the binding force on the waist of the trainee and preventing the occurrence of hyperextension. However, there are certain problems when using this fitness lumbar support belt. When the trainee wears this belt for the first time and fastens it with the buckle, it is often impossible to directly form a size that makes the trainee feel comfortable. At this time, the trainee needs to remove the connecting block from the belt connection hole and then connect it to another belt connection hole at least once to adjust the size formed by the belt body. In some cases, more adjustments may be required. Therefore, it lacks the function of self-adaptive adjustment, resulting in a more cumbersome adjustment process, inconvenient adjustment, and inability to achieve quick adjustment. In addition, it is difficult to effectively lock the two ends of the belt body only by the way of buckling the connecting block with the belt connection hole, resulting in a poor tightening effect. Summary of the Invention

[0005] In view of the above situation, in order to overcome the problems that the existing fitness lumbar support belt is worn by the trainee and needs to be adjusted, the adjustment process is more cumbersome, inconvenient to adjust, unable to achieve quick adjustment, and it is difficult to effectively lock the two ends of the belt body by buckling the connecting block with the belt connection hole, resulting in a poor tightening effect, the purpose of the present invention is to provide a fitness lumbar support belt with a self-adaptive adjustment function, a simple size adjustment process, convenient adjustment, capable of achieving quick adjustment, and having a better tightening effect.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A fitness waist belt with adaptive adjustment and self-locking function, comprising a belt buckle and a belt body, wherein the belt buckle comprises a shell, a toggle and a check valve, a lower mounting groove is formed at the bottom of the shell, and left and right opposite extension plates are formed on one side of the lower mounting groove, a belt passage is formed between the two extension plates, and a slide is provided on the extension plate, the slide is connected with the belt passage, a front mounting groove and a rear mounting groove are provided at the top of the shell, the front mounting groove and the rear mounting groove are opposite to and connected with the belt passage, the toggle and the check valve are respectively hinged in the front mounting groove and the rear mounting groove, and extend into the belt passage, one end of the belt body is fixed in the lower mounting groove, ratchet teeth are formed in sequence on the upper surface of the belt body, the toggle is used to grab the ratchet teeth, and the check valve is used to cooperate with the check surface of the ratchet teeth.

[0008] Preferably, the toggle device includes a toggle wrench, a movable shaft, a first torsion spring and a toggle claw. A movable guide groove is provided on the side wall of the front mounting groove, and the movable guide groove runs up and down. The movable shaft is connected to the toggle wrench and slides in the movable guide groove. The toggle claw is connected to the toggle wrench and is used to grab the ratchet. The first torsion spring is sleeved on the toggle claw, and its end is connected to the top of the outer shell.

[0009] Preferably, the driving claw has a claw head with a driving groove formed on the claw head, the shape of the driving groove matches the shape of the ratchet, and support blocks are formed on the left and right sides of the driving claw, and a support seat is correspondingly formed on the driving wrench, and a slot is formed on the support seat, and the support block is embedded in the slot.

[0010] Preferably, a first limit block is formed on the support seat, and a second limit block is correspondingly formed in the belt passing channel, and the second limit block is located on the rotation path of the first limit block.

[0011] Preferably, the anti-return device includes a anti-return wrench, a first fixed rotating shaft, a anti-return paddle, a second fixed rotating shaft and a second torsion spring. The anti-return wrench is hinged in the rear mounting groove through the first fixed rotating shaft, the anti-return paddle is hinged in the rear mounting groove through the second fixed rotating shaft, and the anti-return paddle is connected to the anti-return wrench, and the two ends of the second torsion spring are mounted on the anti-return wrench and the anti-return paddle.

[0012] Preferably, a swivel seat is formed on the anti-return wrench, a pull hook is formed on the swivel seat, a convex shaft is formed on the anti-return paddle, the convex shaft corresponds to the pull hook and are interlocked with each other, one end of the second torsion spring is mounted on the swivel seat, and the other end passes through the top of the convex shaft and is mounted on the anti-return paddle.

[0013] Preferably, a third limit block is formed on the non-return wrench, and a limit groove is formed on the outer shell, and the limit groove of the third limit block is opposite to each other up and down and plugged in.

[0014] Preferably, the belt body is fixed in the lower installation groove by a first threaded fastener.

[0015] Preferably, a partition plate is formed in the belt passing channel, and the front installation groove and the rear installation groove are respectively located on the front and rear sides of the partition plate.

[0016] Preferably, the housing includes side wing plate bodies and a top plate body. There are two groups of side wing plate bodies, which are respectively arranged on the left and right sides of the top plate body and fixed by second threaded fasteners. The lower installation groove, the belt passing channel, the slideway and the partition plate are all located on the top plate body, and the front installation groove and the rear installation groove are both located at the mating position of the side wing plate body and the top plate body.

[0017] A respirator is provided on the side wall of the housing.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] (1) When the free end of the belt body is inserted into the belt passing channel and the left and right side edges are embedded in the slideway, after the pusher rotates into the belt passing channel, it grabs the ratchet tooth, and drives the grabbed ratchet tooth to move through reciprocating rotation, thereby driving the free end of the belt body to move, realizing the adjustment of the diameter. When the ratchet tooth grabbed by the pusher moves a unit distance, it disengages from the pusher, and the pusher can rotate again to grab the next ratchet tooth. Since the width of the ratchet tooth is small, the moving distance of the free end of the belt body each time is equal to the unit distance, realizing precise adjustment of the diameter. And the entire adjustment process only needs the trainer to operate the controller to rotate to complete, with a better adaptive adjustment function, making the adjustment process simple, convenient to adjust, and capable of realizing rapid adjustment.

[0020] (2) The backstop is located in the belt passing channel in the initial state and cooperates with the check surface of the ratchet tooth. In this cooperative state, only the ratchet tooth is allowed to move in one direction, thereby restricting the moving direction of the free end of the belt body, effectively avoiding the retraction of the belt body, and maintaining the tightening force persistently when the belt body is tightened, providing a better tightening effect for the trainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the belt buckle of the fitness belt of the present invention;

[0022] Figure 2 is a schematic diagram of the overall structure of the belt buckle of the fitness belt of the present invention from another perspective;

[0023] Figure 3 is the present invention Figure 2 is an enlarged schematic diagram of part A;

[0024] Figure 4It is a schematic exploded view of the belt buckle of the fitness belt of the present invention;

[0025] Figure 5 It is a schematic overall structure view of the pusher of the belt buckle of the fitness belt of the present invention;

[0026] Figure 6 It is a schematic overall structure view of the backcheck of the belt buckle of the fitness belt of the present invention;

[0027] Figure 7 It is a schematic overall structure view of the backcheck of the belt buckle of the fitness belt of the present invention from another perspective;

[0028] Figure 8 It is the present invention Figure 7 Schematic enlarged structure view of part B;

[0029] Figure 9 It is a schematic overall structure view of the outer shell side wing plate body of the belt buckle of the fitness belt of the present invention;

[0030] Figure 10 It is a schematic overall structure view of the fitness belt of the present invention;

[0031] Figure 11 It is a schematic overall structure view of the fitness belt when it is formed into a ring;

[0032] Figure 12 It is a schematic overall structure view of the fitness belt when it is formed into a ring and one side wing plate body of the belt buckle housing is separated;

[0033] Figure 13 It is the present invention Figure 12 Schematic enlarged structure view of part C;

[0034] Figure 14 It is a schematic overall structure view of the fitness belt when it is formed into a ring, the backcheck flap of the pusher disengages from the belt passing channel, and one side wing plate body of the belt buckle housing is separated;

[0035] Figure 15 It is the present invention Figure 14 Schematic enlarged structure view of part D.

[0036] As shown in the figure:

[0037] A1. Belt buckle; A2. Belt body; 1. Housing; 1a. Flank plate body; 1b. Top plate body; 101. Lower mounting groove; 102. Extension plate; 103. Belt passing channel; 103a. Slideway; 103b. Second limiting block; 104. Front mounting groove; 104a. Movable guide groove; 105. Rear mounting groove; 106. Limiting groove; 107. Partition plate; 2. Pusher; 2a. Pushing wrench; 2b. Movable rotating shaft; 2c. First torsion spring; 2d. Pushing claw; 201. Claw head; 201a. Pushing groove; 202. Support block; 203. Support seat; 203a. Card slot; 203b. First limiting block; 3. Backstop; 3a. Backstop wrench; 3b. First fixed rotating shaft; 3c. Backstop dial; 3d. Second fixed rotating shaft; 3e. Second torsion spring; 301. Rotating seat; 301a. Hook; 302. Convex shaft; 303. Third limiting block; 4. Ratchet tooth; 5. First threaded fastener; 6. Second threaded fastener. Detailed implementation mode

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of simplifying the description, rather than indicating or implying that this orientation is a specific orientation that must be possessed and specific orientation structures and operations. Therefore, it should not be construed as a limitation to the present invention.

[0040] Such as Figure 1 、 Figure 2 、 Figure 4 And Figures 9 to 15As shown in the figure, the present invention relates to a fitness belt with adaptive adjustment and self-locking function, which includes a belt buckle A1 and a belt body A2. The belt buckle A1 includes a housing 1, a toggler 2 and a backstop 3. Among them, a lower mounting groove 101 is formed at the bottom of the housing 1. The lower mounting groove 101 is close to the front end of the housing 1. On one side of the lower mounting groove 101, that is, at the rear end of the housing 1, an extension plate 102 is formed. There are two groups of extension plates 102, and the two groups of extension plates 102 are arranged opposite to each other left and right. A belt passing channel 103 is formed between the two extension plates 102. The belt passing channel 103 is used for the end of the belt body A2 to be inserted. And a slideway 103a is opened on the extension plate 102. The slideway 103a is arranged along the length direction of the extension plate 102. The slideway 103a is close to one side of the belt passing channel 103 and communicates with the belt passing channel 103. The left and right side edges of the end of the belt body A2 can be embedded into the slideways 103a on both sides and move along the slideways 103a, so as to change the length entering the belt passing channel 103. A front mounting groove 104 and a rear mounting groove 105 are opened at the top of the housing 1. The front mounting groove 104 and the rear mounting groove 105 are vertically opposite to the belt passing channel 103 and communicate with the belt passing channel 103. The toggler 2 and the backstop 3 are respectively hinged in the front mounting groove 104 and the rear mounting groove 105. The toggler 2 and the backstop 3 can enter the belt passing channel 103 by rotating. One end of the belt body A2 is fixed in the lower mounting groove 101, and the other end is a free end. The free end can be inserted into the belt passing channel 103, and the left and right side edges can be slidably matched with the slideways 103a. In this way, the belt body A2 will form a ring shape, enabling it to be worn around the waist of the trainer. And the free end of the belt body moves along the slideway 103a. While changing the length entering the belt passing channel 103, it can adjust the diameter of the formed ring, so as to better fit the waist of the trainer. A plurality of ratchet teeth 4 are sequentially formed on the upper surface of the belt body A2. It can be understood that there are multiple ratchet teeth 4. When the free end of the belt body A2 is inserted into the belt passing channel 103 and the left and right side edges are embedded into the slideways 103a, after the toggler 2 rotates into the belt passing channel 103, it grabs the ratchet teeth 4 and drives the grabbed ratchet teeth 4 to move through reciprocating rotation, so as to drive the free end of the belt body A2 to move and realize the adjustment of the diameter. Here, the distance that the toggler 2 grabs the ratchet teeth 4 to move is defined as the unit distance. When the ratchet teeth 4 grabbed by the toggler 2 move the unit distance, they will be disengaged from the connection with the toggler 2. The toggler 2 can rotate again to grab the next ratchet teeth 4. Since the width of the ratchet teeth 4 is small, the moving distance of the free end of the belt body A2 each time is equal to the unit distance, realizing precise adjustment of the diameter. And the whole adjustment process only needs the trainer to operate the controller to rotate to complete, with a better adaptive adjustment function, making the adjustment process simple, convenient to adjust, and capable of realizing rapid adjustment. The backstop 3 is located in the belt passing channel 103 in the initial state and cooperates with the check surface of the ratchet teeth 4. In this way, in the cooperation state, only the ratchet teeth 4 are allowed to move in one direction, so as to limit the moving direction of the free end of the belt body A2.Effectively avoid the back-drawing of the belt body A2, and maintain the tightening force persistently when the belt body A2 is tightened, providing a better tightening effect for the trainer.

[0041] As Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 12 and Figure 13 As shown, the toggler 2 includes a toggling wrench 2a, a movable rotating shaft 2b, a first torsion spring 2c and a toggling claw 2d. An activity guide groove 104a is formed on the side wall of the front mounting groove 104. It should be noted that the activity guide groove 104a is located on the left and right side walls of the front mounting groove 104, and the activity guide groove 104a runs up and down. More specifically, in the present invention, the activity guide groove 104a is also inclined relative to the horizontal plane. The movable rotating shaft 2b is connected to the toggling wrench 2a and is slidably fitted in the activity guide groove 104a, and can also rotate in the activity guide groove 104a. The toggling wrench 2a will keep synchronous movement with the movement and rotation of the movable rotating shaft 2b. The toggling claw 2d is connected to the toggling wrench 2a and is used to grab the ratchet 4. Similarly, the toggling claw 2d will also keep the same movement as the toggling wrench 2a. The first torsion spring 2c is sleeved on the toggling claw 2d, and its end is connected to the top of the housing 1. The first torsion spring 2c will be stretched when the toggling wrench 2a and the toggling claw 2d rotate away from the initial position, thereby generating an elastic force. The generated elastic force will drive the toggling wrench 2a and the toggling claw 2d to automatically reset after the adjustment is completed. This saves the process of manual control of the trainer for resetting, making the adjustment process more streamlined and the adjustment more convenient.

[0042] As Figure 5 , Figure 12 and Figure 13 As shown, the toggling claw 2d has a claw head 201, and a toggling groove 201a is formed on the claw head 201. The wave grass maintains the same length as the claw head 201, so as to penetrate through both ends of the claw head 201. The shape of the toggling groove 201a matches the outer shape of the ratchet 4, ensuring that the ratchet 4 can be smoothly grabbed and controlling the movement of the ratchet 4 and the free end of the belt body A2 during rotation. And support blocks 202 are formed on the left and right sides of the toggling claw 2d, and corresponding support seats 203 are formed on the toggling wrench 2a. A clamping groove 203a is formed on the support seat 203, and the support blocks 202 are embedded in the clamping groove 203a to realize the connection with the toggling wrench 2a.

[0043] As Figure 2 , Figure 5 and Figure 9As shown, a first limiting block 103b is formed on the support base 203, and a second limiting block 103b is correspondingly formed in the belt passing channel 103. In the present invention, the second limiting block 103b is located above the belt passing channel 103, and the second limiting block 103b is located on the rotation path of the first limiting block 103b. In this way, the second limiting block 103b will be able to limit the rotation of the first limiting block 103b, the support base 203 integrated therewith, and the toggle wrench 2a, avoiding over-rotation of the toggle wrench 2a.

[0044] As Figure 1 , Figure 2 , Figure, Figure 6 , Figure 7 and Figures 13 to 15 As shown, the backstop 3 includes a backstop wrench 3a, a first fixed rotating shaft 3b, a backstop flap 3c, a second fixed rotating shaft 3d, and a second torsion spring 3e. Among them, the backstop wrench 3a is hinged in the rear mounting groove 105 through the first fixed rotating shaft 3b. Different from the movable rotating shaft 2b, the first fixed shaft cannot move, so that the backstop wrench 3a can only perform fixed-axis rotation. The backstop flap 3c is hinged in the rear mounting groove 105 through the second fixed rotating shaft 3d, and the backstop flap 3c is connected to the backstop wrench 3a. In this way, it will be able to drive the rotation through the backstop wrench 3a. The two ends of the second torsion spring 3e are sleeved on the backstop wrench 3a and the backstop flap 3c. The second torsion spring 3e is stretched when the backstop wrench 3a drives the backstop flap 3c to rotate, thereby generating an elastic force. The generated elastic force will drive the backstop wrench 3a and the backstop flap 3c to automatically reset. It should be mentioned that there are two groups of the second torsion springs 3e, which are respectively arranged on the left and right sides of the backstop wrench 3a and the backstop flap 3c. In the present invention, the movement direction of the ratchet 4 and the free end of the belt body A2 is restricted by the cooperation of the backstop flap 3c and the check surface of the ratchet 4. In the initial state, the backstop flap 3c is located in the belt passing channel 103. When the free end of the belt body A2 is inserted, it can move along the driving surface of the ratchet 4 and then be embedded between adjacent ratchets 4, and cooperate with the check surface of the previous ratchet 4. Moreover, the backstop flap 3c will also be kept in close cooperation with the check surface of the ratchet 4 under the action of the second torsion spring 3e. At this time, the ratchet 4 and the free end of the belt body A2 cannot move, effectively avoiding the back-drawing of the free end. When the free end of the belt body A2 needs to be removed from the belt passing channel 103, the backstop wrench 3a is controlled to rotate, and the backstop wrench 3a drives the backstop flap 3c to rotate so that it disengages from the belt passing channel 103. In this way, it can be separated from the ratchet 4 at the same time, enabling the free end of the belt body A2 to move freely. The entire removal process is also extremely streamlined, facilitating the trainer to release it immediately.

[0045] As Figure 6 and Figure 7As shown, a swivel base 301 is formed on the check wrench 3a, a hook 301a is formed on the swivel base 301, a convex shaft 302 is formed on the check flap 3c, the convex shaft 302 corresponds to the hook 301a and is engaged with each other. The hook 301a drives the convex shaft 302, and then drives the entire check flap 3c to rotate synchronously. One end of the second torsion spring 3e is sleeved on the swivel base 301, and the other end passes through above the convex shaft 302 and is sleeved on the check flap 3c. When the check flap 3c rotates, the height of the convex shaft 302 will change. When the check flap 3c rotates upward, the height of the convex shaft 302 rises, thereby squeezing the second torsion spring 3e to deform it. The second torsion spring 3e generates an elastic force to provide power for the automatic reset of the check wrench 3a and the check flap 3c.

[0046] As Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 9 As shown, a third limit block 303 is formed on the check wrench 3a, a limit groove 106 is formed on the housing 1, the third limit block 303 and the limit groove 106 are opposite up and down and are inserted and matched. Based on the above settings, the limit groove 106 restricts the downward movement of the idle third limit block 303, thereby providing support for the third limit block 303 and correspondingly preventing the check wrench 3a and the connected check flap 3c from rotating over-position.

[0047] As Figure 2 shown, the belt body A2 is fixed in the lower installation groove 101 through the first threaded fastener 5. The number of the first threaded fasteners 5 is not particularly limited. When the number is large, the belt body A2 can be fixed more firmly in the lower installation groove 101, and the threaded fastener can be disassembled, which facilitates the disassembly and assembly of the belt body A2.

[0048] As Figure 2 shown, a partition plate 107 is formed in the belt passing channel 103, the front installation groove 104 and the rear installation groove 105 are respectively located on the front and rear sides of the partition plate 107. The partition plate 107 can effectively prevent the pusher 2 in the front installation groove 104 from interfering with the check device 3 in the rear installation groove 105, ensuring that the two can rotate independently.

[0049] As Figure 1 , Figure 2 and Figure 4As shown, the shell 1 consists of two parts: a side wing plate 1a and a top plate 1b. The side wing plate 1a has two groups. The two groups of side wing plate 1a are respectively arranged on the left and right sides of the top plate 1b and are fixed by a second threaded fastener 6. There can be multiple threaded fasteners to ensure that the two side wing plate bodies 1a can be firmly connected to the top plate body 1b. The lower mounting groove 101, the extension plate 102, the belt passage 103, the slide 103a and the partition plate 107 are all located on the top plate body 1b. The front mounting groove 104 and the rear mounting groove 105 are both located at the matching positions of the side wing plate body 1a and the top plate body 1b, so that the front mounting groove 104 and the rear mounting groove 105 will be able to communicate with the belt passage 103 and at the same time communicate with the external space, so that the toggle 2 and the check valve 3 can be installed in the front mounting groove 104 and the rear mounting groove 105 respectively, and enter the belt passage 103.

[0050] Combination Figures 1 to 15 When the fitness waist belt of the present invention is used, the trainer first moves the waist belt to the waist in a conventional manner, and controls one end of the waist belt body A2 connected to the waist buckle A1 and the other free end to close together, until the free end of the waist belt body A2 is inserted into the belt passage 103 of the waist buckle A1 shell 1, and the left and right side edges are embedded in the slideway 103a, so that the waist belt body A2 is surrounded by a ring, and thus worn on the trainer's waist. At this time, the ratchet 4 on the waist belt body A2 can push the non-return paddle 3c of the non-return device 3 to rotate through its driving surface, so that the non-return paddle 3c can be embedded between adjacent ratchet teeth 4 and cooperate with the non-return surface of the front ratchet teeth 4 to prevent backdrawing, so that the waist belt body A2 maintains the tightening force. If the trainer needs to adjust the diameter of the waist belt body A2 at this time, the toggle wrench 2a of the toggle device 2 is operated to rotate, and the toggle wrench 2a will pull the belt The movable toggle claw 2d rotates, and at the same time, the movable rotating shaft 2b slides in the movable guide groove 104a, so that the toggle wrench 2a and the toggle claw 2d rise and fall, so that the toggle claw 2d can grab the ratchet 4, and with the reciprocating rotation, the ratchet 4 and the free end of the belt body A2 are pushed to move toward the inner side of the belt body A2. After the adjustment is completed, the first torsion spring 2c can drive the toggle wrench 2a and the toggle claw 2d to automatically reset. Therefore, the adjustment process is simple, the adjustment is convenient, and quick adjustment can be achieved. When the belt is to be released, the anti-return wrench 3a of the anti-return device 3 is operated to rotate it. The anti-return wrench 3a will drive the anti-return paddle 3c to rotate to the side away from the belt passing channel 103, thereby disengaging from the belt passing channel 103 and releasing the restriction on the ratchet 4. At this time, the free end of the belt body A2 can be smoothly withdrawn, and the belt body A2 can be quickly released.

[0051] The above embodiments and descriptions are only for illustrating the principles and best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, all of which fall within the scope of the present invention to be protected.

Claims

1. A fitness waist belt with self-adaptive adjustment and self-locking function, comprising a waist belt buckle (A1) and a waist belt body (A2), characterized in that: The belt buckle (A1) comprises a shell (1), a toggle (2) and a check valve (3); a lower mounting groove (101) is formed at the bottom of the shell (1); left and right opposite extension plates (102) are formed on one side of the lower mounting groove (101); a belt-passing channel (103) is formed between the two extension plates (102); a slideway (103a) is provided on the extension plate (102); the slideway (103a) is connected to the belt-passing channel (103); a front mounting groove (104) and a rear mounting groove (105) are provided at the top of the shell (1); The front mounting groove (104) and the rear mounting groove (105) are vertically opposite to and connected to the belt passage (103); the shifter (2) and the check valve (3) are respectively hinged in the front mounting groove (104) and the rear mounting groove (105), and extend into the belt passage (103); one end of the belt body (A2) is fixed in the lower mounting groove (101); ratchet teeth (4) are formed on the upper surface of the belt body (A2); the shifter (2) is used to grab the ratchet teeth (4); and the check valve (3) is used to cooperate with the check surface of the ratchet teeth (4).

2. The fitness waist belt with self-adaptive adjustment and self-locking function according to claim 1, characterized in that: The toggle lever (2) comprises a toggle lever (2a), a movable rotating shaft (2b), a first torsion spring (2c) and a toggle claw (2d); a movable guide groove (104a) is provided on the side wall of the front mounting groove (104); the movable guide groove (104a) is in an up-down direction; the movable rotating shaft (2b) is connected to the toggle lever (2a) and is slidably fitted in the movable guide groove (104a); the toggle claw (2d) is connected to the toggle lever (2a) and is used to grab the ratchet (4); the first torsion spring (2c) is sleeved on the toggle claw (2d), and its end is connected to the top of the housing (1).

3. The self-adaptive and self-locking fitness waist belt according to claim 2, characterized in that: The toggle claw (2d) comprises a claw head (201), a toggle groove (201a) is provided on the claw head (201), the shape of the toggle groove (201a) matches the shape of the ratchet (4), and support blocks (202) are formed on the left and right sides of the toggle claw (2d), a support seat (203) is correspondingly formed on the toggle wrench (2a), a slot (203a) is provided on the support seat (203), and the support block (202) is embedded in the slot (203a).

4. The self-adjustable and self-locking fitness waist belt according to claim 3, characterized in that: A first limiting block (103b) is formed on the support seat (203), and a second limiting block (103b) is correspondingly formed in the belt-passing channel (103), wherein the second limiting block (103b) is located on the rotation path of the first limiting block (103b).

5. A fitness waist belt with self-adaptive adjustment and self-locking function according to any one of claims 1 to 4, characterized in that: The anti-return device (3) comprises an anti-return wrench (3a), a first fixed rotating shaft (3b), an anti-return paddle (3c), a second fixed rotating shaft (3d) and a second torsion spring (3e); the anti-return wrench (3a) is hinged in the rear installation groove (105) via the first fixed rotating shaft (3b); the anti-return paddle (3c) is hinged in the rear installation groove (105) via the second fixed rotating shaft (3d); the anti-return paddle (3c) is connected to the anti-return wrench (3a); and the two ends of the second torsion spring (3e) are mounted on the anti-return wrench (3a) and the anti-return paddle (3c).

6. The fitness waist belt with self-adaptive adjustment and self-locking function according to claim 5, characterized in that: The anti-return wrench (3a) is formed with a rotating seat (301), and a pull hook (301a) is formed on the rotating seat (301). The anti-return paddle (3c) is formed with a convex shaft (302), and the convex shaft (302) corresponds to the pull hook (301a) and is interlocked with each other. One end of the second torsion spring (3e) is mounted on the rotating seat (301), and the other end passes through the top of the convex shaft (302) and is mounted on the anti-return paddle (3c).

7. The self-adjustable and self-locking fitness waist belt according to claim 6, characterized in that: A third limiting block (303) is formed on the non-return wrench (3a), and a limiting groove (106) is formed on the housing (1); the third limiting block (303) and the limiting groove (106) are opposed to each other up and down and are plug-fitted.

8. A fitness waist belt with self-adaptive adjustment and self-locking function according to any one of claims 1, 2, 3, 4, 6 or 7, characterized in that: The waist belt body (A2) is fixed in the lower mounting groove (101) by a first threaded fastener (5).

9. The self-adjustable and self-locking fitness waist belt according to claim 8, characterized in that: A partition plate (107) is formed in the belt-passing passage (103), and the front mounting groove (104) and the rear mounting groove (105) are respectively located at the front and rear sides of the partition plate (107).

10. The self-adjustable and self-locking fitness waist belt according to claim 9, characterized in that: The housing (1) comprises a side wing plate (1a) and a top plate (1b), wherein the side wing plate (1a) comprises two groups, wherein the two groups of the side wing plate (1a) are respectively arranged on the left and right sides of the top plate (1b) and are fixed by a second threaded fastener (6), wherein the lower mounting groove (101), the belt passage (103), the slideway (103a) and the partition plate (107) are all located on the top plate (1b), and the front mounting groove (104) and the rear mounting groove (105) are both located at the matching positions of the side wing plate (1a) and the top plate (1b).

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